/* roulang page: index */
:root {
            --primary: #e8451e;
            --primary-dark: #c73a18;
            --primary-light: #ff6b45;
            --secondary: #1a1a2e;
            --accent: #f0a500;
            --accent-light: #ffc940;
            --bg: #fafbfc;
            --bg-dark: #0d1117;
            --bg-card: #ffffff;
            --text: #1a1a2e;
            --text-light: #4a4a5e;
            --text-muted: #7a7a8e;
            --text-inverse: #f5f5f7;
            --border: #e2e4e9;
            --border-light: #eef0f4;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08), 0 2px 6px rgba(0, 0, 0, 0.04);
            --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.12), 0 4px 12px rgba(0, 0, 0, 0.05);
            --shadow-xl: 0 20px 48px rgba(0, 0, 0, 0.16), 0 8px 20px rgba(0, 0, 0, 0.06);
            --radius-xs: 6px;
            --radius-sm: 10px;
            --radius: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --radius-full: 9999px;
            --transition: 0.22s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, -apple-system, sans-serif;
            --max-width: 1320px;
            --nav-height: 68px;
            --channel-height: 48px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            font-size: 16px;
        }

        body {
            font-family: var(--font-sans);
            line-height: 1.65;
            color: var(--text);
            background-color: var(--bg);
            min-height: 100vh;
            overflow-x: hidden;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            outline: none;
        }
        input {
            font-family: inherit;
            outline: none;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: #fff;
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-md);
        }
        .brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
            padding: 0 24px;
            max-width: var(--max-width);
            margin: 0 auto;
            gap: 16px;
        }
        .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.5rem;
            color: var(--secondary);
            letter-spacing: -0.02em;
            flex-shrink: 0;
            transition: color var(--transition);
        }
        .logo-link:hover {
            color: var(--primary);
        }
        .logo-icon {
            width: 40px;
            height: 40px;
            background: var(--primary);
            border-radius: var(--radius-xs);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 900;
            font-size: 1.2rem;
            flex-shrink: 0;
        }
        .brand-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .search-box {
            display: flex;
            align-items: center;
            background: var(--bg);
            border: 1.5px solid var(--border);
            border-radius: var(--radius-full);
            padding: 8px 16px;
            gap: 8px;
            transition: all var(--transition);
            min-width: 200px;
        }
        .search-box:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(232, 69, 30, 0.1);
            background: #fff;
        }
        .search-box input {
            border: none;
            background: transparent;
            font-size: 0.9rem;
            width: 100%;
            color: var(--text);
        }
        .search-box .search-icon {
            color: var(--text-muted);
            font-size: 1rem;
            flex-shrink: 0;
        }
        .btn-login {
            padding: 9px 20px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 0.9rem;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .btn-login:hover {
            background: var(--primary-dark);
            color: #fff;
            box-shadow: var(--shadow-md);
            transform: translateY(-1px);
        }
        .channel-row {
            background: var(--secondary);
            height: var(--channel-height);
            display: flex;
            align-items: center;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }
        .channel-row::-webkit-scrollbar {
            display: none;
        }
        .channel-nav {
            display: flex;
            align-items: center;
            gap: 2px;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
            height: 100%;
        }
        .channel-nav a {
            color: #c5c5d0;
            padding: 8px 18px;
            border-radius: var(--radius-full);
            font-size: 0.9rem;
            font-weight: 500;
            white-space: nowrap;
            transition: all var(--transition);
            position: relative;
        }
        .channel-nav a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
        }
        .channel-nav a.active {
            color: #fff;
            background: var(--primary);
            font-weight: 600;
        }
        .mobile-menu-toggle {
            display: none;
            background: none;
            font-size: 1.5rem;
            color: var(--text);
            padding: 8px;
            border-radius: var(--radius-xs);
            transition: background var(--transition);
        }
        .mobile-menu-toggle:hover {
            background: var(--border-light);
        }
        @media (max-width: 900px) {
            .search-box {
                display: none;
            }
            .channel-nav a {
                padding: 6px 12px;
                font-size: 0.82rem;
            }
        }
        @media (max-width: 768px) {
            .brand-row {
                height: 56px;
                padding: 0 16px;
            }
            .logo-link {
                font-size: 1.25rem;
            }
            .logo-icon {
                width: 34px;
                height: 34px;
                font-size: 1rem;
            }
            .btn-login {
                padding: 7px 14px;
                font-size: 0.8rem;
            }
            .channel-row {
                height: 42px;
            }
            .channel-nav {
                padding: 0 12px;
                gap: 0;
            }
            .channel-nav a {
                padding: 6px 10px;
                font-size: 0.78rem;
                border-radius: var(--radius-xs);
            }
            .mobile-menu-toggle {
                display: block;
            }
            .brand-actions .btn-login.desktop-only {
                display: none;
            }
        }
        @media (min-width: 769px) {
            .brand-actions .btn-login.mobile-only {
                display: none;
            }
        }

        /* ========== SECTIONS ========== */
        .section {
            padding: 72px 0;
            position: relative;
        }
        .section-sm {
            padding: 48px 0;
        }
        .section-lg {
            padding: 96px 0;
        }
        @media (max-width: 768px) {
            .section {
                padding: 48px 0;
            }
            .section-lg {
                padding: 60px 0;
            }
            .section-sm {
                padding: 32px 0;
            }
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header h2 {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--secondary);
            margin-bottom: 12px;
            letter-spacing: -0.02em;
        }
        .section-header p {
            font-size: 1.1rem;
            color: var(--text-light);
            max-width: 680px;
            margin: 0 auto;
            line-height: 1.7;
        }
        .section-tag {
            display: inline-block;
            background: rgba(232, 69, 30, 0.1);
            color: var(--primary);
            font-weight: 700;
            font-size: 0.85rem;
            padding: 6px 16px;
            border-radius: var(--radius-full);
            letter-spacing: 0.04em;
            margin-bottom: 16px;
            text-transform: uppercase;
        }
        @media (max-width: 768px) {
            .section-header h2 {
                font-size: 1.6rem;
            }
            .section-header p {
                font-size: 0.95rem;
            }
        }

        /* ========== HERO ========== */
        .hero-section {
            background: var(--secondary);
            min-height: 620px;
            display: flex;
            align-items: center;
            position: relative;
            overflow: hidden;
            padding: 80px 0 80px;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.webp') center / cover no-repeat;
            opacity: 0.25;
            z-index: 0;
            filter: brightness(0.7) saturate(0.6);
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(13, 17, 23, 0.55) 0%, rgba(13, 17, 23, 0.85) 100%);
            z-index: 1;
        }
        .hero-inner {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr 1.5fr 1fr;
            gap: 32px;
            align-items: center;
            width: 100%;
        }
        .hero-left {
            display: flex;
            flex-direction: column;
            gap: 18px;
        }
        .hero-value-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            color: #e0e0e8;
            font-size: 0.95rem;
            line-height: 1.5;
            padding: 12px 16px;
            background: rgba(255, 255, 255, 0.05);
            border-radius: var(--radius-sm);
            border-left: 3px solid var(--primary-light);
            transition: all var(--transition);
        }
        .hero-value-item:hover {
            background: rgba(255, 255, 255, 0.1);
            border-left-color: var(--accent);
        }
        .hero-value-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            background: var(--primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 0.8rem;
            font-weight: 700;
        }
        .hero-center {
            text-align: center;
            color: #fff;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 20px;
        }
        .hero-badge {
            display: inline-block;
            background: rgba(240, 165, 0, 0.2);
            color: var(--accent-light);
            font-weight: 600;
            font-size: 0.85rem;
            padding: 6px 18px;
            border-radius: var(--radius-full);
            letter-spacing: 0.03em;
            border: 1px solid rgba(240, 165, 0, 0.3);
        }
        .hero-center h1 {
            font-size: 3rem;
            font-weight: 900;
            letter-spacing: -0.03em;
            line-height: 1.2;
            color: #fff;
        }
        .hero-center h1 span {
            color: var(--primary-light);
        }
        .hero-center .hero-desc {
            font-size: 1.1rem;
            color: #c5c5d5;
            max-width: 500px;
            line-height: 1.7;
        }
        .hero-visual {
            width: 100%;
            max-width: 420px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-xl);
            margin: 0 auto;
            border: 3px solid rgba(255, 255, 255, 0.2);
            aspect-ratio: 16 / 10;
            background: rgba(255, 255, 255, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .hero-visual img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: var(--radius-lg);
        }
        .hero-right {
            display: flex;
            flex-direction: column;
            gap: 14px;
            align-items: stretch;
        }
        .btn-hero {
            display: block;
            text-align: center;
            padding: 14px 24px;
            border-radius: var(--radius-full);
            font-weight: 700;
            font-size: 1rem;
            transition: all var(--transition);
            letter-spacing: 0.01em;
        }
        .btn-hero-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 6px 24px rgba(232, 69, 30, 0.4);
        }
        .btn-hero-primary:hover {
            background: var(--primary-light);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 10px 32px rgba(232, 69, 30, 0.5);
        }
        .btn-hero-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.4);
        }
        .btn-hero-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
        }
        .hero-stats-row {
            display: flex;
            gap: 12px;
            justify-content: center;
            flex-wrap: wrap;
            margin-top: 8px;
        }
        .hero-stat {
            text-align: center;
            color: #fff;
            padding: 10px 16px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-sm);
            min-width: 80px;
        }
        .hero-stat strong {
            display: block;
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--accent-light);
        }
        .hero-stat span {
            font-size: 0.78rem;
            color: #b0b0c0;
        }
        @media (max-width: 1024px) {
            .hero-inner {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .hero-left {
                flex-direction: row;
                flex-wrap: wrap;
                justify-content: center;
                gap: 10px;
            }
            .hero-value-item {
                flex: 1 1 140px;
                font-size: 0.85rem;
                padding: 10px 12px;
            }
            .hero-center h1 {
                font-size: 2.2rem;
            }
            .hero-right {
                flex-direction: row;
                flex-wrap: wrap;
                justify-content: center;
            }
            .hero-visual {
                max-width: 300px;
            }
        }
        @media (max-width: 768px) {
            .hero-section {
                padding: 48px 0 56px;
                min-height: auto;
            }
            .hero-center h1 {
                font-size: 1.7rem;
            }
            .hero-center .hero-desc {
                font-size: 0.95rem;
            }
            .hero-value-item {
                flex: 1 1 120px;
                font-size: 0.8rem;
            }
            .hero-visual {
                max-width: 260px;
            }
            .btn-hero {
                padding: 12px 18px;
                font-size: 0.9rem;
            }
        }

        /* ========== CATEGORY CARDS ========== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 20px;
        }
        .category-card {
            background: #fff;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            cursor: pointer;
            position: relative;
            border: 1px solid var(--border-light);
            text-align: center;
        }
        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: var(--primary-light);
        }
        .category-card-img {
            width: 100%;
            height: 160px;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .category-card:hover .category-card-img {
            transform: scale(1.05);
        }
        .category-card-body {
            padding: 18px 14px 20px;
        }
        .category-card-body h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 6px;
        }
        .category-card-body p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.5;
        }
        .category-card .card-arrow {
            display: inline-block;
            margin-top: 8px;
            color: var(--primary);
            font-weight: 600;
            font-size: 0.85rem;
            transition: all var(--transition);
        }
        .category-card:hover .card-arrow {
            color: var(--primary-dark);
            letter-spacing: 0.04em;
        }
        @media (max-width: 1024px) {
            .category-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 16px;
            }
        }
        @media (max-width: 600px) {
            .category-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .category-card-img {
                height: 120px;
            }
            .category-card-body h3 {
                font-size: 0.95rem;
            }
        }

        /* ========== LIVE SPORTS SECTION ========== */
        .live-sports-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
            align-items: start;
        }
        .live-main-card {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-light);
        }
        .live-main-card img {
            width: 100%;
            height: 240px;
            object-fit: cover;
        }
        .live-main-card .live-badge {
            position: absolute;
            top: 16px;
            left: 16px;
            background: #e8451e;
            color: #fff;
            padding: 5px 14px;
            border-radius: var(--radius-full);
            font-weight: 700;
            font-size: 0.8rem;
            letter-spacing: 0.03em;
            animation: pulse-dot 2s infinite;
        }
        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.6;
            }
        }
        .live-main-card .card-inner {
            padding: 20px;
            position: relative;
        }
        .live-main-card h3 {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .live-side-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .live-side-item {
            display: flex;
            gap: 14px;
            background: #fff;
            border-radius: var(--radius);
            padding: 14px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            align-items: center;
        }
        .live-side-item:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--primary-light);
        }
        .live-side-thumb {
            width: 90px;
            height: 60px;
            border-radius: var(--radius-xs);
            object-fit: cover;
            flex-shrink: 0;
        }
        .live-side-info h4 {
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 4px;
            color: var(--secondary);
        }
        .live-side-info span {
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        @media (max-width: 768px) {
            .live-sports-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ========== NEWS SECTION ========== */
        .news-layout {
            display: grid;
            grid-template-columns: 1.4fr 1fr;
            gap: 32px;
            align-items: start;
        }
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .news-item {
            background: #fff;
            border-radius: var(--radius);
            padding: 20px 22px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            display: flex;
            gap: 16px;
            align-items: flex-start;
        }
        .news-item:hover {
            box-shadow: var(--shadow-md);
            border-color: #d0d4dd;
        }
        .news-date {
            flex-shrink: 0;
            background: var(--bg);
            border-radius: var(--radius-xs);
            padding: 8px 12px;
            text-align: center;
            min-width: 56px;
            font-weight: 700;
            color: var(--primary);
            font-size: 0.85rem;
            line-height: 1.2;
        }
        .news-date small {
            display: block;
            font-weight: 400;
            font-size: 0.7rem;
            color: var(--text-muted);
        }
        .news-content h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--secondary);
        }
        .news-content p {
            font-size: 0.88rem;
            color: var(--text-light);
            line-height: 1.55;
        }
        .news-content .read-more {
            display: inline-block;
            margin-top: 8px;
            font-weight: 600;
            font-size: 0.85rem;
            color: var(--primary);
            transition: all var(--transition);
        }
        .news-content .read-more:hover {
            color: var(--primary-dark);
            letter-spacing: 0.03em;
        }
        .news-sidebar {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            position: sticky;
            top: 140px;
        }
        .news-sidebar h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--secondary);
            padding-bottom: 12px;
            border-bottom: 2px solid var(--border-light);
        }
        .news-sidebar .hot-item {
            display: flex;
            gap: 10px;
            padding: 10px 0;
            border-bottom: 1px solid var(--border-light);
            align-items: center;
        }
        .hot-rank {
            font-weight: 900;
            font-size: 1.3rem;
            color: var(--primary);
            flex-shrink: 0;
            width: 30px;
            text-align: center;
        }
        .hot-info span {
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text);
            line-height: 1.4;
        }
        .hot-info small {
            font-size: 0.75rem;
            color: var(--text-muted);
            display: block;
            margin-top: 2px;
        }
        @media (max-width: 900px) {
            .news-layout {
                grid-template-columns: 1fr;
            }
            .news-sidebar {
                position: static;
            }
        }
        @media (max-width: 600px) {
            .news-item {
                flex-direction: column;
                gap: 10px;
                padding: 16px;
            }
        }

        /* ========== BRAND INTRO ========== */
        .brand-intro-section {
            background: var(--bg-dark);
            position: relative;
            overflow: hidden;
            color: #fff;
        }
        .brand-intro-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.webp') center / cover no-repeat;
            opacity: 0.18;
            z-index: 0;
        }
        .brand-intro-inner {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .brand-intro-text h2 {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 16px;
            color: #fff;
        }
        .brand-intro-text p {
            font-size: 1.05rem;
            line-height: 1.8;
            color: #d0d0dc;
            margin-bottom: 12px;
        }
        .brand-intro-stats {
            display: flex;
            gap: 24px;
            flex-wrap: wrap;
        }
        .brand-stat-card {
            background: rgba(255, 255, 255, 0.07);
            border-radius: var(--radius);
            padding: 20px 24px;
            text-align: center;
            flex: 1 1 120px;
            min-width: 100px;
            border: 1px solid rgba(255, 255, 255, 0.1);
        }
        .brand-stat-card strong {
            display: block;
            font-size: 2rem;
            font-weight: 900;
            color: var(--accent-light);
        }
        .brand-stat-card span {
            font-size: 0.85rem;
            color: #b0b0c0;
        }
        @media (max-width: 768px) {
            .brand-intro-inner {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .brand-intro-text h2 {
                font-size: 1.5rem;
            }
        }

        /* ========== FEATURES GRID ========== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .feature-card {
            background: #fff;
            border-radius: var(--radius);
            padding: 28px 22px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            text-align: center;
        }
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: var(--primary-light);
        }
        .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-sm);
            background: rgba(232, 69, 30, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-size: 1.6rem;
            color: var(--primary);
            transition: all var(--transition);
        }
        .feature-card:hover .feature-icon {
            background: var(--primary);
            color: #fff;
        }
        .feature-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--secondary);
        }
        .feature-card p {
            font-size: 0.88rem;
            color: var(--text-light);
            line-height: 1.6;
        }
        @media (max-width: 900px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .features-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ========== TOPIC CARDS ========== */
        .topic-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .topic-card {
            background: #fff;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .topic-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
        .topic-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }
        .topic-card-body {
            padding: 18px 16px 20px;
        }
        .topic-card-body h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--secondary);
        }
        .topic-card-body p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.5;
        }
        .topic-tag {
            display: inline-block;
            background: rgba(240, 165, 0, 0.12);
            color: #c78500;
            font-weight: 600;
            font-size: 0.75rem;
            padding: 3px 10px;
            border-radius: var(--radius-full);
            margin-bottom: 8px;
        }
        @media (max-width: 900px) {
            .topic-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .topic-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ========== LEAD FORM / PAIN POINTS ========== */
        .lead-section {
            background: linear-gradient(170deg, #f8f9fc 0%, #eef1f7 100%);
        }
        .lead-flow {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 36px;
            align-items: start;
        }
        .lead-pain-points h3 {
            font-size: 1.4rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--secondary);
        }
        .pain-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .pain-item {
            background: #fff;
            padding: 16px 18px;
            border-radius: var(--radius);
            border-left: 4px solid var(--primary);
            box-shadow: var(--shadow-sm);
            font-weight: 500;
            font-size: 0.95rem;
            transition: all var(--transition);
        }
        .pain-item:hover {
            border-left-color: var(--accent);
            box-shadow: var(--shadow-md);
        }
        .lead-form-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-light);
        }
        .lead-form-card h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--secondary);
        }
        .lead-form-card .form-subtitle {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-bottom: 18px;
        }
        .form-group {
            margin-bottom: 14px;
        }
        .form-group label {
            display: block;
            font-weight: 600;
            font-size: 0.85rem;
            margin-bottom: 5px;
            color: var(--text);
        }
        .form-group input,
        .form-group select {
            width: 100%;
            padding: 11px 14px;
            border: 1.5px solid var(--border);
            border-radius: var(--radius-xs);
            font-size: 0.9rem;
            transition: border-color var(--transition);
            background: var(--bg);
        }
        .form-group input:focus,
        .form-group select:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(232, 69, 30, 0.08);
            background: #fff;
        }
        .btn-submit {
            width: 100%;
            padding: 13px;
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            font-size: 1rem;
            border-radius: var(--radius-full);
            transition: all var(--transition);
            letter-spacing: 0.02em;
        }
        .btn-submit:hover {
            background: var(--primary-dark);
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }
        .privacy-note {
            text-align: center;
            font-size: 0.78rem;
            color: var(--text-muted);
            margin-top: 12px;
            line-height: 1.5;
        }
        @media (max-width: 768px) {
            .lead-flow {
                grid-template-columns: 1fr;
            }
        }

        /* ========== REVIEW WALL ========== */
        .review-header {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-bottom: 28px;
            flex-wrap: wrap;
        }
        .review-score {
            font-size: 3rem;
            font-weight: 900;
            color: var(--primary);
            line-height: 1;
        }
        .review-stars {
            color: var(--accent);
            font-size: 1.2rem;
            letter-spacing: 2px;
        }
        .review-count {
            color: var(--text-muted);
            font-size: 0.9rem;
        }
        .review-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .review-card {
            background: #fff;
            border-radius: var(--radius);
            padding: 22px 18px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .review-card:hover {
            box-shadow: var(--shadow-md);
            border-color: #d0d4dd;
        }
        .review-card .reviewer {
            font-weight: 700;
            font-size: 0.95rem;
            margin-bottom: 4px;
            color: var(--secondary);
        }
        .review-card .review-text {
            font-size: 0.88rem;
            color: var(--text-light);
            line-height: 1.6;
            margin-bottom: 10px;
        }
        .review-card .review-date {
            font-size: 0.78rem;
            color: var(--text-muted);
        }
        @media (max-width: 900px) {
            .review-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .review-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ========== PRICING / TIER COMPARISON ========== */
        .tier-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            align-items: stretch;
        }
        .tier-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            box-shadow: var(--shadow-sm);
            border: 2px solid var(--border-light);
            transition: all var(--transition);
            text-align: center;
            display: flex;
            flex-direction: column;
            position: relative;
        }
        .tier-card.featured {
            border-color: var(--primary);
            box-shadow: var(--shadow-lg);
            transform: scale(1.03);
            z-index: 1;
        }
        .tier-card.featured .tier-badge {
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--primary);
            color: #fff;
            padding: 5px 18px;
            border-radius: var(--radius-full);
            font-weight: 700;
            font-size: 0.8rem;
            white-space: nowrap;
        }
        .tier-card h3 {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--secondary);
        }
        .tier-price {
            font-size: 2.5rem;
            font-weight: 900;
            color: var(--primary);
            margin: 12px 0;
        }
        .tier-price small {
            font-size: 1rem;
            font-weight: 400;
            color: var(--text-muted);
        }
        .tier-features {
            text-align: left;
            margin: 16px 0 20px;
            flex: 1;
        }
        .tier-features li {
            padding: 6px 0;
            font-size: 0.88rem;
            color: var(--text-light);
            border-bottom: 1px solid var(--border-light);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .tier-features li::before {
            content: '✓';
            color: #22c55e;
            font-weight: 700;
            flex-shrink: 0;
        }
        .btn-tier {
            display: block;
            padding: 13px;
            border-radius: var(--radius-full);
            font-weight: 700;
            font-size: 0.95rem;
            transition: all var(--transition);
            text-align: center;
            letter-spacing: 0.02em;
        }
        .btn-tier-outline {
            background: transparent;
            border: 2px solid var(--primary);
            color: var(--primary);
        }
        .btn-tier-outline:hover {
            background: var(--primary);
            color: #fff;
        }
        .btn-tier-solid {
            background: var(--primary);
            color: #fff;
        }
        .btn-tier-solid:hover {
            background: var(--primary-dark);
            box-shadow: var(--shadow-md);
            color: #fff;
        }
        @media (max-width: 900px) {
            .tier-grid {
                grid-template-columns: 1fr;
                max-width: 420px;
                margin: 0 auto;
            }
            .tier-card.featured {
                transform: none;
            }
        }

        /* ========== TRAINING CARDS ========== */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .training-card {
            background: #fff;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .training-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
        .training-card img {
            width: 100%;
            height: 170px;
            object-fit: cover;
        }
        .training-card-body {
            padding: 16px 16px 20px;
        }
        .training-card-body h4 {
            font-weight: 700;
            font-size: 1rem;
            margin-bottom: 6px;
            color: var(--secondary);
        }
        .training-card-body p {
            font-size: 0.84rem;
            color: var(--text-muted);
            line-height: 1.5;
        }
        @media (max-width: 768px) {
            .training-grid {
                grid-template-columns: 1fr;
                max-width: 400px;
                margin: 0 auto;
            }
        }

        /* ========== EQUIPMENT ROW ========== */
        .equipment-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }
        .equipment-card {
            background: #fff;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            text-align: center;
            cursor: pointer;
        }
        .equipment-card:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--primary-light);
            transform: translateY(-3px);
        }
        .equipment-card img {
            width: 100%;
            height: 150px;
            object-fit: cover;
        }
        .equipment-card-body {
            padding: 14px 10px 16px;
        }
        .equipment-card-body h4 {
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--secondary);
            margin-bottom: 4px;
        }
        .equipment-card-body span {
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        @media (max-width: 768px) {
            .equipment-row {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .faq-item {
            background: #fff;
            border-radius: var(--radius);
            padding: 20px 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            cursor: pointer;
        }
        .faq-item:hover {
            border-color: var(--primary-light);
            box-shadow: var(--shadow-md);
        }
        .faq-q {
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--secondary);
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
        }
        .faq-q .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(232, 69, 30, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1rem;
            color: var(--primary);
            transition: all var(--transition);
        }
        .faq-item:hover .faq-icon {
            background: var(--primary);
            color: #fff;
        }
        .faq-a {
            font-size: 0.92rem;
            color: var(--text-light);
            line-height: 1.65;
            margin-top: 12px;
            padding-top: 12px;
            border-top: 1px solid var(--border-light);
            display: none;
        }
        .faq-item.open .faq-a {
            display: block;
        }
        .faq-item.open .faq-icon {
            background: var(--primary);
            color: #fff;
            transform: rotate(45deg);
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            background: var(--secondary);
            color: #fff;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 12px;
        }
        .cta-section p {
            font-size: 1.05rem;
            color: #c5c5d5;
            margin-bottom: 24px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-buttons {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .btn-cta {
            padding: 14px 32px;
            border-radius: var(--radius-full);
            font-weight: 700;
            font-size: 1rem;
            transition: all var(--transition);
            letter-spacing: 0.02em;
        }
        .btn-cta-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 8px 28px rgba(232, 69, 30, 0.5);
        }
        .btn-cta-primary:hover {
            background: var(--primary-light);
            color: #fff;
            transform: translateY(-3px);
        }
        .btn-cta-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.5);
        }
        .btn-cta-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #0a0e14;
            color: #a0a0b0;
            padding: 56px 0 28px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 40px;
        }
        .footer-brand h3 {
            font-size: 1.4rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 10px;
        }
        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.6;
            color: #8888a0;
        }
        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #d0d0e0;
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }
        .footer-col a {
            display: block;
            color: #8888a0;
            font-size: 0.88rem;
            padding: 5px 0;
            transition: color var(--transition);
        }
        .footer-col a:hover {
            color: #fff;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: space-between;
            align-items: center;
            font-size: 0.82rem;
        }
        .footer-bottom a {
            color: #8888a0;
        }
        .footer-bottom a:hover {
            color: #fff;
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 480px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ========== MISC UTILITIES ========== */
        .bg-white {
            background: #fff;
        }
        .bg-light {
            background: #f8f9fc;
        }
        .text-center {
            text-align: center;
        }
        .mb-0 {
            margin-bottom: 0;
        }
        .mt-0 {
            margin-top: 0;
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 0.85rem;
            border-radius: var(--radius-full);
            font-weight: 600;
            transition: all var(--transition);
            display: inline-block;
        }
        .btn-sm-primary {
            background: var(--primary);
            color: #fff;
        }
        .btn-sm-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            box-shadow: var(--shadow-md);
        }
        .badge-live {
            display: inline-block;
            background: #e8451e;
            color: #fff;
            padding: 3px 10px;
            border-radius: var(--radius-full);
            font-weight: 700;
            font-size: 0.72rem;
            letter-spacing: 0.04em;
            animation: pulse-dot 2s infinite;
        }
        .badge-hot {
            display: inline-block;
            background: #f0a500;
            color: #1a1a2e;
            padding: 3px 10px;
            border-radius: var(--radius-full);
            font-weight: 700;
            font-size: 0.72rem;
            letter-spacing: 0.04em;
        }
        .divider {
            border: none;
            border-top: 1px solid var(--border-light);
            margin: 0;
        }

/* roulang page: category3 */
:root {
            --primary: #0f1a2e;
            --primary-light: #1a3050;
            --accent: #e8453c;
            --accent-hover: #c9302a;
            --accent-light: #fde8e7;
            --gold: #f0a500;
            --gold-light: #fff8e6;
            --text: #1a1a1a;
            --text-secondary: #4a4a4a;
            --text-muted: #6b7280;
            --bg: #f8f9fb;
            --bg-white: #ffffff;
            --bg-dark: #0b1525;
            --bg-card: #ffffff;
            --border: #e5e7eb;
            --border-light: #f0f1f3;
            --radius-sm: 6px;
            --radius: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-md: 0 8px 28px rgba(0, 0, 0, 0.10);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.12);
            --shadow-xl: 0 24px 60px rgba(0, 0, 0, 0.15);
            --transition: 0.2s ease;
            --transition-slow: 0.35s ease;
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, sans-serif;
            --max-width: 1200px;
            --nav-height: 56px;
            --brand-height: 58px;
            --section-gap: 72px;
            --section-gap-sm: 48px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
            font-size: 16px;
        }

        body {
            font-family: var(--font-sans);
            color: var(--text);
            background: var(--bg);
            line-height: 1.7;
            min-width: 320px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition);
        }

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            outline: none;
            background: none;
        }

        input {
            font-family: inherit;
            outline: none;
            border: none;
        }

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 700;
        }

        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }

        .container-narrow {
            max-width: 960px;
            margin: 0 auto;
            padding: 0 20px;
        }

        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }

        /* ========== HEADER ========== */
        .site-header {
            background: var(--bg-white);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 1px 0 var(--border-light), var(--shadow-sm);
        }

        .brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 24px;
            height: var(--brand-height);
            max-width: var(--max-width);
            margin: 0 auto;
            gap: 16px;
        }

        .logo-link {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--primary);
            white-space: nowrap;
            letter-spacing: 0.02em;
            transition: opacity var(--transition);
        }

        .logo-link:hover {
            opacity: 0.85;
        }

        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: var(--accent);
            color: #fff;
            border-radius: var(--radius-sm);
            font-size: 1.1rem;
            font-weight: 700;
            flex-shrink: 0;
        }

        .search-box {
            display: flex;
            align-items: center;
            background: #f3f4f6;
            border-radius: 24px;
            padding: 6px 16px;
            gap: 8px;
            flex: 1;
            max-width: 360px;
            transition: background var(--transition), box-shadow var(--transition);
        }

        .search-box:focus-within {
            background: #fff;
            box-shadow: 0 0 0 3px rgba(232, 69, 60, 0.12);
            outline: 2px solid var(--accent);
            outline-offset: -2px;
            border-radius: 24px;
        }

        .search-icon {
            font-size: 0.95rem;
            flex-shrink: 0;
        }

        .search-box input {
            background: transparent;
            width: 100%;
            font-size: 0.9rem;
            color: var(--text);
            min-width: 0;
        }

        .search-box input::placeholder {
            color: var(--text-muted);
        }

        .brand-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .btn-login {
            padding: 8px 18px;
            border-radius: 20px;
            font-size: 0.88rem;
            font-weight: 600;
            background: var(--accent);
            color: #fff;
            transition: background var(--transition), transform var(--transition);
            white-space: nowrap;
        }

        .btn-login:hover {
            background: var(--accent-hover);
            transform: translateY(-1px);
        }

        .btn-login:active {
            transform: translateY(0);
        }

        .mobile-menu-toggle {
            display: none;
            font-size: 1.4rem;
            padding: 6px 8px;
            color: var(--text);
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }

        .mobile-menu-toggle:hover {
            background: #f3f4f6;
        }

        .channel-row {
            border-top: 1px solid var(--border-light);
            background: var(--bg-white);
        }

        .channel-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }

        .channel-nav::-webkit-scrollbar {
            display: none;
        }

        .channel-nav a {
            display: inline-flex;
            align-items: center;
            padding: 12px 18px;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-secondary);
            white-space: nowrap;
            border-radius: var(--radius-sm) var(--radius-sm) 0 0;
            position: relative;
            transition: color var(--transition), background var(--transition);
            letter-spacing: 0.01em;
        }

        .channel-nav a:hover {
            color: var(--accent);
            background: #fef5f4;
        }

        .channel-nav a.active {
            color: var(--accent);
            font-weight: 700;
        }

        .channel-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 12px;
            right: 12px;
            height: 3px;
            background: var(--accent);
            border-radius: 3px 3px 0 0;
        }

        /* ========== HERO ========== */
        .hero-section {
            position: relative;
            background: linear-gradient(135deg, #0b1525 0%, #122340 40%, #0f1a2e 100%);
            color: #fff;
            overflow: hidden;
            min-height: 520px;
            display: flex;
            align-items: center;
        }

        .hero-bg-img {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            opacity: 0.18;
            z-index: 0;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(11, 21, 37, 0.55) 0%, rgba(15, 26, 46, 0.85) 100%);
            z-index: 1;
        }

        .hero-inner {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr 380px;
            gap: 48px;
            align-items: center;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 60px 24px;
            width: 100%;
        }

        .hero-content {
            max-width: 620px;
        }

        .hero-badge {
            display: inline-block;
            background: rgba(232, 69, 60, 0.22);
            border: 1px solid rgba(232, 69, 60, 0.4);
            color: #fca5a1;
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            margin-bottom: 20px;
            text-transform: uppercase;
        }

        .hero-content h1 {
            font-size: 2.7rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            line-height: 1.2;
            margin-bottom: 16px;
            color: #fff;
        }

        .hero-content h1 .highlight {
            color: var(--accent);
        }

        .hero-subtitle {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.78);
            line-height: 1.7;
            margin-bottom: 28px;
            max-width: 520px;
        }

        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        .btn-hero-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            background: var(--accent);
            color: #fff;
            font-weight: 700;
            font-size: 1rem;
            border-radius: 28px;
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
            box-shadow: 0 6px 22px rgba(232, 69, 60, 0.35);
        }

        .btn-hero-primary:hover {
            background: #f05048;
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(232, 69, 60, 0.45);
        }

        .btn-hero-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            background: transparent;
            color: #fff;
            font-weight: 600;
            font-size: 1rem;
            border-radius: 28px;
            border: 2px solid rgba(255, 255, 255, 0.35);
            transition: border-color var(--transition), background var(--transition), transform var(--transition);
        }

        .btn-hero-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.08);
            transform: translateY(-2px);
        }

        .hero-rank-panel {
            background: rgba(255, 255, 255, 0.07);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid rgba(255, 255, 255, 0.13);
            border-radius: var(--radius-lg);
            padding: 24px 20px;
            min-width: 0;
        }

        .rank-panel-title {
            font-size: 0.9rem;
            font-weight: 700;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
            letter-spacing: 0.04em;
            text-transform: uppercase;
        }

        .rank-panel-title::before {
            content: '🔥';
            font-size: 1.1rem;
        }

        .rank-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .rank-item {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 12px;
            background: rgba(255, 255, 255, 0.04);
            border-radius: var(--radius-sm);
            transition: background var(--transition);
            cursor: default;
        }

        .rank-item:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        .rank-num {
            font-weight: 800;
            font-size: 1.1rem;
            color: var(--gold);
            min-width: 28px;
            text-align: center;
            flex-shrink: 0;
        }

        .rank-num.top {
            color: #ff6b6b;
            font-size: 1.3rem;
        }

        .rank-info {
            flex: 1;
            min-width: 0;
        }

        .rank-topic {
            font-size: 0.85rem;
            font-weight: 600;
            color: #fff;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .rank-meta {
            font-size: 0.73rem;
            color: rgba(255, 255, 255, 0.55);
            margin-top: 2px;
        }

        /* ========== SECTIONS ========== */
        .section {
            padding: var(--section-gap) 0;
        }

        .section-sm {
            padding: var(--section-gap-sm) 0;
        }

        .section-label {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 700;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            color: var(--accent);
            margin-bottom: 8px;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text);
            letter-spacing: -0.01em;
            margin-bottom: 12px;
        }

        .section-desc {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 600px;
            line-height: 1.7;
        }

        .section-header {
            margin-bottom: 36px;
        }

        .section-header.center {
            text-align: center;
        }

        .section-header.center .section-desc {
            margin: 0 auto;
        }

        /* ========== PAIN POINTS ========== */
        .pain-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .pain-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
            position: relative;
            overflow: hidden;
        }

        .pain-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: #fecaca;
        }

        .pain-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--accent), #f87171);
            opacity: 0;
            transition: opacity var(--transition);
        }

        .pain-card:hover::before {
            opacity: 1;
        }

        .pain-icon {
            font-size: 2.2rem;
            margin-bottom: 14px;
            display: block;
        }

        .pain-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text);
        }

        .pain-card p {
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ========== SOLUTION CARDS ========== */
        .solution-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .solution-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 32px 22px;
            text-align: center;
            border: 1px solid var(--border);
            transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
            position: relative;
        }

        .solution-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: transparent;
        }

        .solution-icon-wrap {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 60px;
            height: 60px;
            border-radius: 50%;
            margin-bottom: 16px;
            font-size: 1.6rem;
            transition: transform var(--transition);
        }

        .solution-card:hover .solution-icon-wrap {
            transform: scale(1.1);
        }

        .solution-icon-wrap.blue {
            background: #eff6ff;
        }
        .solution-icon-wrap.red {
            background: #fef2f2;
        }
        .solution-icon-wrap.green {
            background: #f0fdf4;
        }
        .solution-icon-wrap.amber {
            background: #fffbeb;
        }

        .solution-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--text);
        }

        .solution-card p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ========== NEWS HIGHLIGHTS ========== */
        .news-highlight-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
        }

        .news-feature-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: box-shadow var(--transition), transform var(--transition);
            display: flex;
            flex-direction: column;
        }

        .news-feature-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
        }

        .news-feature-img {
            height: 220px;
            overflow: hidden;
            position: relative;
        }

        .news-feature-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

        .news-feature-card:hover .news-feature-img img {
            transform: scale(1.06);
        }

        .news-feature-body {
            padding: 20px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .news-tag {
            display: inline-block;
            background: var(--accent-light);
            color: var(--accent);
            font-size: 0.73rem;
            font-weight: 700;
            padding: 3px 10px;
            border-radius: 12px;
            margin-bottom: 10px;
            letter-spacing: 0.03em;
            width: fit-content;
        }

        .news-feature-body h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text);
            line-height: 1.4;
        }

        .news-feature-body p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
            flex: 1;
            margin-bottom: 12px;
        }

        .news-meta-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.8rem;
            color: var(--text-muted);
            border-top: 1px solid var(--border-light);
            padding-top: 12px;
        }

        .news-meta-row .read-more {
            font-weight: 700;
            color: var(--accent);
            transition: color var(--transition);
            font-size: 0.82rem;
        }

        .news-meta-row .read-more:hover {
            color: var(--accent-hover);
            text-decoration: underline;
        }

        .news-side-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .news-side-item {
            display: flex;
            gap: 14px;
            padding: 14px 16px;
            background: var(--bg-white);
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
            transition: box-shadow var(--transition), transform var(--transition);
            align-items: flex-start;
        }

        .news-side-item:hover {
            box-shadow: var(--shadow);
            transform: translateX(3px);
        }

        .news-side-thumb {
            width: 80px;
            height: 60px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            flex-shrink: 0;
            background: #e5e7eb;
        }

        .news-side-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .news-side-info {
            flex: 1;
            min-width: 0;
        }

        .news-side-info h4 {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--text);
            line-height: 1.4;
            margin-bottom: 4px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-side-info .date {
            font-size: 0.75rem;
            color: var(--text-muted);
        }

        /* ========== STATS ========== */
        .stats-section {
            background: var(--primary);
            color: #fff;
            padding: 56px 0;
            position: relative;
            overflow: hidden;
        }

        .stats-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            opacity: 0.08;
            z-index: 0;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
            position: relative;
            z-index: 1;
        }

        .stat-item {
            padding: 24px;
        }

        .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: #fff;
            line-height: 1;
            margin-bottom: 6px;
        }

        .stat-number .plus {
            color: var(--accent);
        }

        .stat-label {
            font-size: 0.92rem;
            color: rgba(255, 255, 255, 0.7);
            font-weight: 500;
        }

        /* ========== TOPIC NAV ========== */
        .topic-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 16px;
        }

        .topic-chip {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 16px 18px;
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--text);
            transition: all var(--transition);
            cursor: pointer;
        }

        .topic-chip:hover {
            border-color: var(--accent);
            background: #fef5f4;
            color: var(--accent);
            box-shadow: var(--shadow);
            transform: translateY(-2px);
        }

        .topic-chip .emoji {
            font-size: 1.4rem;
            flex-shrink: 0;
        }

        /* ========== SUBSCRIBE FORM ========== */
        .subscribe-block {
            background: var(--bg-white);
            border: 2px solid var(--accent);
            border-radius: var(--radius-xl);
            padding: 44px 36px;
            text-align: center;
            box-shadow: var(--shadow-md);
            position: relative;
            overflow: hidden;
        }

        .subscribe-block::before {
            content: '';
            position: absolute;
            top: -40px;
            right: -40px;
            width: 120px;
            height: 120px;
            background: var(--accent-light);
            border-radius: 50%;
            opacity: 0.5;
            z-index: 0;
        }

        .subscribe-block>* {
            position: relative;
            z-index: 1;
        }

        .subscribe-block h3 {
            font-size: 1.5rem;
            font-weight: 800;
            margin-bottom: 8px;
            color: var(--text);
        }

        .subscribe-block .sub-desc {
            font-size: 0.95rem;
            color: var(--text-muted);
            margin-bottom: 24px;
        }

        .subscribe-form {
            display: flex;
            gap: 10px;
            max-width: 500px;
            margin: 0 auto;
            flex-wrap: wrap;
            justify-content: center;
        }

        .subscribe-form input {
            flex: 1;
            min-width: 240px;
            padding: 13px 18px;
            border: 2px solid var(--border);
            border-radius: 28px;
            font-size: 0.95rem;
            transition: border-color var(--transition), box-shadow var(--transition);
            background: #fafbfc;
        }

        .subscribe-form input:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 4px rgba(232, 69, 60, 0.08);
            background: #fff;
        }

        .btn-subscribe {
            padding: 13px 28px;
            background: var(--accent);
            color: #fff;
            font-weight: 700;
            font-size: 0.95rem;
            border-radius: 28px;
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
            white-space: nowrap;
        }

        .btn-subscribe:hover {
            background: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(232, 69, 60, 0.35);
        }

        /* ========== PRIVACY NOTE ========== */
        .privacy-note {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            background: #f9fafb;
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            padding: 16px 20px;
            font-size: 0.82rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        .privacy-note .lock-icon {
            font-size: 1.2rem;
            flex-shrink: 0;
            margin-top: 1px;
        }

        /* ========== FAQ ========== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
            max-width: 760px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: box-shadow var(--transition), border-color var(--transition);
        }

        .faq-item:hover {
            border-color: #d1d5db;
        }

        .faq-question {
            width: 100%;
            text-align: left;
            padding: 18px 22px;
            font-size: 1rem;
            font-weight: 700;
            color: var(--text);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            transition: background var(--transition);
            cursor: pointer;
            background: transparent;
            border: none;
        }

        .faq-question:hover {
            background: #fafbfc;
        }

        .faq-arrow {
            font-size: 0.7rem;
            color: var(--text-muted);
            transition: transform var(--transition);
            flex-shrink: 0;
        }

        .faq-item.open .faq-arrow {
            transform: rotate(180deg);
            color: var(--accent);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 22px;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 22px 18px;
        }

        .faq-answer p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ========== CTA BANNER ========== */
        .cta-banner {
            background: linear-gradient(135deg, #1a3050 0%, #0f1a2e 100%);
            color: #fff;
            border-radius: var(--radius-xl);
            padding: 48px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
            opacity: 0.12;
            z-index: 0;
        }

        .cta-banner>* {
            position: relative;
            z-index: 1;
        }

        .cta-banner h2 {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 10px;
        }

        .cta-banner p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 24px;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }

        .btn-cta-large {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 15px 34px;
            background: var(--accent);
            color: #fff;
            font-weight: 700;
            font-size: 1.05rem;
            border-radius: 30px;
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
            box-shadow: 0 8px 28px rgba(232, 69, 60, 0.4);
        }

        .btn-cta-large:hover {
            background: #f05048;
            transform: translateY(-3px);
            box-shadow: 0 14px 36px rgba(232, 69, 60, 0.5);
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #0f172a;
            color: rgba(255, 255, 255, 0.8);
            padding: 48px 0 24px;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-brand h3 {
            font-size: 1.3rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 10px;
        }

        .footer-brand p {
            font-size: 0.85rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
        }

        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: 0.03em;
        }

        .footer-col a {
            display: block;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.6);
            padding: 4px 0;
            transition: color var(--transition);
        }

        .footer-col a:hover {
            color: #fff;
            text-decoration: underline;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 0.78rem;
            color: rgba(255, 255, 255, 0.45);
            justify-content: center;
            text-align: center;
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.55);
            transition: color var(--transition);
        }

        .footer-bottom a:hover {
            color: #fff;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .hero-inner {
                grid-template-columns: 1fr;
                gap: 32px;
                padding: 40px 20px;
            }

            .hero-content h1 {
                font-size: 2.1rem;
            }

            .hero-rank-panel {
                max-width: 500px;
            }

            .solution-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .pain-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .news-highlight-grid {
                grid-template-columns: 1fr;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .topic-grid {
                grid-template-columns: repeat(3, 1fr);
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }

            .section-title {
                font-size: 1.7rem;
            }

            .section {
                padding: 48px 0;
            }

            .section-sm {
                padding: 36px 0;
            }
        }

        @media (max-width: 768px) {
            .brand-row {
                padding: 0 16px;
                gap: 10px;
            }

            .search-box {
                display: none;
            }

            .btn-login.desktop-only {
                display: none;
            }

            .mobile-menu-toggle {
                display: block;
            }

            .channel-nav {
                gap: 0;
                padding: 0 8px;
            }

            .channel-nav a {
                padding: 10px 12px;
                font-size: 0.8rem;
            }

            .hero-content h1 {
                font-size: 1.75rem;
            }

            .hero-subtitle {
                font-size: 0.95rem;
            }

            .hero-actions {
                flex-direction: column;
                gap: 10px;
            }

            .btn-hero-primary,
            .btn-hero-outline {
                width: 100%;
                justify-content: center;
                text-align: center;
            }

            .pain-grid {
                grid-template-columns: 1fr;
            }

            .solution-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }

            .solution-card {
                padding: 20px 14px;
            }

            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }

            .stat-number {
                font-size: 2rem;
            }

            .topic-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 10px;
            }

            .topic-chip {
                padding: 12px 14px;
                font-size: 0.82rem;
            }

            .subscribe-block {
                padding: 28px 18px;
            }

            .subscribe-form {
                flex-direction: column;
                gap: 10px;
            }

            .subscribe-form input {
                min-width: auto;
                width: 100%;
            }

            .btn-subscribe {
                width: 100%;
                text-align: center;
                justify-content: center;
            }

            .cta-banner {
                padding: 32px 20px;
            }

            .cta-banner h2 {
                font-size: 1.5rem;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .section-title {
                font-size: 1.5rem;
            }

            .section {
                padding: 40px 0;
            }

            .section-sm {
                padding: 28px 0;
            }

            .hero-section {
                min-height: auto;
            }

            .news-feature-img {
                height: 160px;
            }

            .faq-question {
                font-size: 0.9rem;
                padding: 14px 16px;
            }

            .faq-answer {
                padding: 0 16px;
            }

            .faq-item.open .faq-answer {
                padding: 0 16px 14px;
            }
        }

        @media (max-width: 520px) {
            .hero-content h1 {
                font-size: 1.45rem;
            }

            .hero-inner {
                padding: 28px 14px;
                gap: 20px;
            }

            .hero-rank-panel {
                padding: 16px 14px;
            }

            .solution-grid {
                grid-template-columns: 1fr;
                gap: 10px;
            }

            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }

            .stat-number {
                font-size: 1.7rem;
            }

            .stat-label {
                font-size: 0.8rem;
            }

            .topic-grid {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }

            .news-side-item {
                flex-direction: column;
                gap: 8px;
            }

            .news-side-thumb {
                width: 100%;
                height: 120px;
            }

            .btn-cta-large {
                width: 100%;
                justify-content: center;
            }

            .btn-hero-primary,
            .btn-hero-outline {
                font-size: 0.9rem;
                padding: 11px 20px;
            }

            .container {
                padding: 0 14px;
            }

            .container-narrow {
                padding: 0 14px;
            }
        }

        /* mobile nav collapse */
        @media (max-width: 768px) {
            .channel-row.collapsed .channel-nav {
                display: none;
            }

            .channel-row .channel-nav {
                display: flex;
                flex-wrap: nowrap;
            }

            .channel-row {
                overflow: hidden;
            }
        }

        @media (min-width: 769px) {
            .channel-row .channel-nav {
                display: flex !important;
            }
        }

/* roulang page: category2 */
:root {
            --brand-orange: #FF6B35;
            --brand-orange-dark: #E55A2B;
            --brand-orange-light: #FFF0E8;
            --brand-navy: #0f1f2f;
            --brand-navy-light: #1a3045;
            --brand-gold: #F5A623;
            --brand-red: #E63946;
            --brand-green: #2EC4B6;
            --text-primary: #1a1a2e;
            --text-secondary: #4a4a5e;
            --text-muted: #7a7a90;
            --bg-page: #f8f9fb;
            --bg-white: #ffffff;
            --bg-light: #f0f2f5;
            --bg-navy-section: #0f1f2f;
            --border-color: #e2e6ed;
            --border-light: #eff1f5;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
            --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.16);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-full: 50px;
            --transition-fast: 0.18s ease;
            --transition-smooth: 0.28s ease;
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, -apple-system, sans-serif;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            line-height: 1.65;
            color: var(--text-primary);
            background-color: var(--bg-page);
            margin: 0;
            padding: 0;
            overflow-x: hidden;
            min-width: 320px;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--brand-orange);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            cursor: pointer;
            font-family: inherit;
        }
        input,
        textarea,
        select {
            font-family: inherit;
        }
        :focus-visible {
            outline: 2px solid var(--brand-orange);
            outline-offset: 2px;
            border-radius: 2px;
        }

        .container {
            max-width: 1200px;
            padding-left: 16px;
            padding-right: 16px;
            margin-left: auto;
            margin-right: auto;
        }
        @media (min-width: 1400px) {
            .container {
                max-width: 1280px;
            }
        }

        /* ========== HEADER ========== */
        .site-header {
            background: var(--bg-white);
            position: sticky;
            top: 0;
            z-index: 1050;
            box-shadow: var(--shadow-sm);
            border-bottom: 1px solid var(--border-light);
        }
        .brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 0;
            gap: 16px;
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 16px;
            padding-right: 16px;
        }
        .logo-link {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--brand-navy);
            white-space: nowrap;
            flex-shrink: 0;
            transition: color var(--transition-fast);
        }
        .logo-link:hover {
            color: var(--brand-orange);
        }
        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: var(--brand-orange);
            color: #fff;
            border-radius: var(--radius-sm);
            font-weight: 800;
            font-size: 1.25rem;
            flex-shrink: 0;
        }
        .search-box {
            display: flex;
            align-items: center;
            background: var(--bg-light);
            border-radius: var(--radius-full);
            padding: 8px 16px;
            flex: 1;
            max-width: 400px;
            gap: 8px;
            border: 1px solid transparent;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
        }
        .search-box:focus-within {
            border-color: var(--brand-orange);
            box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.1);
            background: #fff;
        }
        .search-icon {
            font-size: 1rem;
            flex-shrink: 0;
        }
        .search-box input {
            border: none;
            background: transparent;
            outline: none;
            font-size: 0.9rem;
            width: 100%;
            color: var(--text-primary);
        }
        .search-box input::placeholder {
            color: var(--text-muted);
        }
        .brand-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .btn-login {
            background: var(--brand-orange);
            color: #fff;
            border: none;
            padding: 8px 18px;
            border-radius: var(--radius-full);
            font-size: 0.9rem;
            font-weight: 600;
            transition: background var(--transition-fast), transform var(--transition-fast);
            white-space: nowrap;
        }
        .btn-login:hover {
            background: var(--brand-orange-dark);
            transform: translateY(-1px);
        }
        .btn-login:active {
            transform: scale(0.97);
        }
        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--text-primary);
            padding: 4px 8px;
            border-radius: var(--radius-sm);
        }
        .mobile-menu-toggle:hover {
            background: var(--bg-light);
        }

        .channel-row {
            background: var(--brand-navy);
            padding: 0;
        }
        .channel-nav {
            display: flex;
            align-items: center;
            gap: 0;
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 16px;
            padding-right: 16px;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }
        .channel-nav::-webkit-scrollbar {
            display: none;
        }
        .channel-nav a {
            display: inline-block;
            padding: 13px 20px;
            color: rgba(255, 255, 255, 0.78);
            font-size: 0.92rem;
            font-weight: 500;
            white-space: nowrap;
            border-bottom: 3px solid transparent;
            transition: color var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast);
            position: relative;
            letter-spacing: 0.02em;
        }
        .channel-nav a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.04);
        }
        .channel-nav a.active {
            color: #fff;
            font-weight: 600;
            border-bottom-color: var(--brand-orange);
            background: rgba(255, 107, 53, 0.08);
        }

        @media (max-width: 768px) {
            .search-box {
                max-width: 200px;
            }
            .desktop-only {
                display: none !important;
            }
            .mobile-menu-toggle {
                display: inline-block;
            }
            .channel-nav {
                flex-wrap: nowrap;
                gap: 0;
                padding: 0 8px;
            }
            .channel-nav a {
                padding: 11px 12px;
                font-size: 0.82rem;
            }
            .brand-row {
                padding: 10px 12px;
                gap: 10px;
            }
            .logo-link {
                font-size: 1.2rem;
            }
            .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 1rem;
            }
            .btn-login {
                padding: 6px 13px;
                font-size: 0.8rem;
            }
        }
        @media (max-width: 520px) {
            .search-box {
                display: none;
            }
            .brand-row {
                gap: 6px;
            }
            .channel-nav a {
                padding: 10px 10px;
                font-size: 0.76rem;
            }
        }

        /* ========== FLASH SALE HERO ========== */
        .flash-hero {
            background: linear-gradient(135deg, #0f1f2f 0%, #1a3045 40%, #1a2840 100%);
            position: relative;
            overflow: hidden;
            padding: 36px 0 44px;
            color: #fff;
        }
        .flash-hero::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -80px;
            width: 350px;
            height: 350px;
            background: radial-gradient(circle, rgba(255, 107, 53, 0.35) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .flash-hero::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -60px;
            width: 260px;
            height: 260px;
            background: radial-gradient(circle, rgba(245, 166, 35, 0.25) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .flash-badge-row {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
            margin-bottom: 10px;
            position: relative;
            z-index: 1;
        }
        .flash-badge {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            background: var(--brand-red);
            color: #fff;
            font-weight: 700;
            font-size: 0.88rem;
            padding: 6px 14px;
            border-radius: var(--radius-full);
            animation: pulse-badge 1.6s ease-in-out infinite;
            letter-spacing: 0.03em;
        }
        @keyframes pulse-badge {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(230, 57, 70, 0.55);
            }
            50% {
                box-shadow: 0 0 0 14px rgba(230, 57, 70, 0);
            }
        }
        .flash-countdown {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--brand-gold);
            position: relative;
            z-index: 1;
        }
        .countdown-unit {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
            min-width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 1.1rem;
            margin: 0 2px;
            backdrop-filter: blur(4px);
        }
        .countdown-sep {
            color: var(--brand-gold);
            font-weight: 700;
        }
        .flash-hero-inner {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            align-items: center;
            position: relative;
            z-index: 1;
        }
        .flash-hero-left h1 {
            font-size: 2rem;
            font-weight: 800;
            margin: 0 0 8px;
            line-height: 1.25;
            letter-spacing: 0.01em;
        }
        .flash-hero-left h1 span {
            color: var(--brand-orange);
        }
        .flash-hero-left .subtitle {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 16px;
            line-height: 1.5;
        }
        .flash-hero-left .price-row {
            display: flex;
            align-items: baseline;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 18px;
        }
        .price-original {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.5);
            text-decoration: line-through;
        }
        .price-flash {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--brand-gold);
            line-height: 1;
        }
        .price-flash small {
            font-size: 1rem;
            font-weight: 500;
        }
        .stock-bar-wrap {
            margin-bottom: 18px;
        }
        .stock-label {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 4px;
            display: flex;
            justify-content: space-between;
        }
        .stock-bar {
            height: 8px;
            background: rgba(255, 255, 255, 0.2);
            border-radius: 10px;
            overflow: hidden;
        }
        .stock-bar-fill {
            height: 100%;
            background: linear-gradient(90deg, var(--brand-red), var(--brand-orange));
            border-radius: 10px;
            width: 28%;
            animation: stock-pulse 2s ease-in-out infinite;
        }
        @keyframes stock-pulse {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.7;
            }
        }
        .btn-flash-cta {
            display: inline-block;
            background: var(--brand-orange);
            color: #fff;
            font-weight: 700;
            font-size: 1.1rem;
            padding: 13px 32px;
            border-radius: var(--radius-full);
            border: none;
            transition: all var(--transition-smooth);
            letter-spacing: 0.03em;
            box-shadow: 0 6px 20px rgba(255, 107, 53, 0.35);
        }
        .btn-flash-cta:hover {
            background: #ff8055;
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(255, 107, 53, 0.45);
            color: #fff;
        }
        .btn-flash-cta:active {
            transform: scale(0.96);
        }
        .flash-hero-right {
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-lg);
            padding: 24px;
            backdrop-filter: blur(6px);
            border: 1px solid rgba(255, 255, 255, 0.12);
        }
        .flash-hero-right img {
            border-radius: var(--radius-md);
            width: 100%;
            aspect-ratio: 16/10;
            object-fit: cover;
            margin-bottom: 12px;
        }
        .flash-card-info h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin: 0 0 4px;
            color: #fff;
        }
        .flash-card-info .tags {
            display: flex;
            gap: 6px;
            flex-wrap: wrap;
            margin-bottom: 6px;
        }
        .flash-card-info .tag {
            font-size: 0.75rem;
            padding: 3px 9px;
            border-radius: var(--radius-full);
            background: rgba(255, 107, 53, 0.25);
            color: #ffb088;
            font-weight: 500;
        }
        .flash-card-info .stats {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.65);
        }
        @media (max-width: 768px) {
            .flash-hero-inner {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .flash-hero-left h1 {
                font-size: 1.5rem;
            }
            .price-flash {
                font-size: 1.8rem;
            }
            .flash-hero {
                padding: 24px 0 30px;
            }
            .flash-badge {
                font-size: 0.78rem;
                padding: 5px 10px;
            }
            .countdown-unit {
                min-width: 30px;
                height: 30px;
                font-size: 0.9rem;
            }
            .flash-countdown {
                font-size: 0.9rem;
            }
        }

        /* ========== SECTION COMMONS ========== */
        .section {
            padding: 48px 0;
        }
        .section-sm {
            padding: 32px 0;
        }
        .section-lg {
            padding: 60px 0;
        }
        .section-title {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 6px;
        }
        .section-subtitle {
            font-size: 0.95rem;
            color: var(--text-secondary);
            margin-bottom: 28px;
        }
        .text-center {
            text-align: center;
        }
        .bg-white-section {
            background: var(--bg-white);
        }
        .bg-light-section {
            background: var(--bg-light);
        }
        .bg-navy-section {
            background: var(--bg-navy-section);
            color: #fff;
        }
        .bg-navy-section .section-title {
            color: #fff;
        }
        .bg-navy-section .section-subtitle {
            color: rgba(255, 255, 255, 0.7);
        }

        /* ========== PAIN POINTS ========== */
        .pain-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .pain-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 24px;
            border: 1px solid var(--border-color);
            transition: all var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }
        .pain-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-color: transparent;
        }
        .pain-card .pain-icon {
            font-size: 2rem;
            margin-bottom: 10px;
            display: block;
        }
        .pain-card h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin: 0 0 6px;
            color: var(--text-primary);
        }
        .pain-card p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.55;
        }
        .pain-card .pain-stripe {
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background: var(--brand-orange);
            border-radius: 0 4px 4px 0;
            opacity: 0;
            transition: opacity var(--transition-smooth);
        }
        .pain-card:hover .pain-stripe {
            opacity: 1;
        }
        @media (max-width: 768px) {
            .pain-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
        }
        @media (max-width: 520px) {
            .pain-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ========== SOLUTION CARDS ========== */
        .solution-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 18px;
        }
        .solution-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: all var(--transition-smooth);
            display: flex;
            flex-direction: column;
        }
        .solution-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: transparent;
        }
        .solution-card img {
            width: 100%;
            aspect-ratio: 4/3;
            object-fit: cover;
        }
        .solution-card-body {
            padding: 16px 18px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .solution-card-body h4 {
            font-size: 1rem;
            font-weight: 700;
            margin: 0 0 4px;
            color: var(--text-primary);
        }
        .solution-card-body .meta {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 6px;
        }
        .solution-card-body .desc {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.5;
            margin-bottom: 10px;
            flex: 1;
        }
        .solution-card-body .btn-sm {
            align-self: flex-start;
            background: var(--brand-orange);
            color: #fff;
            border: none;
            padding: 7px 16px;
            border-radius: var(--radius-full);
            font-size: 0.85rem;
            font-weight: 600;
            transition: all var(--transition-fast);
        }
        .solution-card-body .btn-sm:hover {
            background: var(--brand-orange-dark);
            color: #fff;
            transform: translateY(-1px);
        }
        @media (max-width: 992px) {
            .solution-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .solution-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ========== SUCCESS DATA ========== */
        .data-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .data-card {
            text-align: center;
            padding: 24px;
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
            transition: all var(--transition-smooth);
        }
        .data-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .data-number {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--brand-orange);
            line-height: 1;
            margin-bottom: 6px;
        }
        .data-label {
            font-size: 0.9rem;
            color: var(--text-secondary);
            font-weight: 500;
        }
        @media (max-width: 768px) {
            .data-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }
            .data-number {
                font-size: 2rem;
            }
        }
        @media (max-width: 520px) {
            .data-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        /* ========== DEEP CONTENT ========== */
        .deep-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 36px;
            align-items: center;
        }
        .deep-block.reverse {
            direction: rtl;
        }
        .deep-block.reverse .deep-text {
            direction: ltr;
        }
        .deep-block img {
            border-radius: var(--radius-lg);
            width: 100%;
            aspect-ratio: 16/10;
            object-fit: cover;
        }
        .deep-text h3 {
            font-size: 1.4rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-primary);
        }
        .deep-text p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 8px;
        }
        .deep-text .feature-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .deep-text .feature-list li {
            padding: 6px 0 6px 26px;
            position: relative;
            font-size: 0.9rem;
            color: var(--text-secondary);
        }
        .deep-text .feature-list li::before {
            content: '✓';
            position: absolute;
            left: 0;
            top: 6px;
            color: var(--brand-green);
            font-weight: 700;
            font-size: 0.85rem;
        }
        @media (max-width: 768px) {
            .deep-block {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .deep-block.reverse {
                direction: ltr;
            }
            .deep-text h3 {
                font-size: 1.2rem;
            }
        }

        /* ========== TESTIMONIALS ========== */
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .testimonial-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 22px;
            border: 1px solid var(--border-color);
            transition: all var(--transition-smooth);
            position: relative;
        }
        .testimonial-card:hover {
            box-shadow: var(--shadow-md);
        }
        .testimonial-card .quote-mark {
            font-size: 2.5rem;
            color: var(--brand-orange-light);
            line-height: 1;
            margin-bottom: -10px;
            font-weight: 700;
        }
        .testimonial-card .quote-text {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 12px;
        }
        .testimonial-card .author-row {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .author-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--brand-orange-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: var(--brand-orange);
            font-size: 0.9rem;
            flex-shrink: 0;
        }
        .author-name {
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--text-primary);
        }
        .author-role {
            font-size: 0.78rem;
            color: var(--text-muted);
        }
        @media (max-width: 768px) {
            .testimonial-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
        }
        @media (max-width: 520px) {
            .testimonial-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ========== CTA FORM BLOCK ========== */
        .cta-form-block {
            background: linear-gradient(135deg, #1a3045 0%, #0f1f2f 100%);
            border-radius: var(--radius-xl);
            padding: 40px;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-form-block::before {
            content: '';
            position: absolute;
            top: -40px;
            right: -40px;
            width: 200px;
            height: 200px;
            background: radial-gradient(circle, rgba(255, 107, 53, 0.3) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-form-inner {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
            position: relative;
            z-index: 1;
            align-items: center;
        }
        .cta-form-info h3 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .cta-form-info p {
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 16px;
            line-height: 1.6;
        }
        .cta-form-info .benefit-bullets {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .cta-form-info .benefit-bullets li {
            padding: 5px 0 5px 24px;
            position: relative;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.8);
        }
        .cta-form-info .benefit-bullets li::before {
            content: '●';
            position: absolute;
            left: 0;
            top: 5px;
            color: var(--brand-gold);
            font-size: 0.6rem;
        }
        .cta-form {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 24px;
            color: var(--text-primary);
        }
        .cta-form .form-label {
            font-weight: 600;
            font-size: 0.85rem;
            margin-bottom: 3px;
            color: var(--text-primary);
        }
        .cta-form input,
        .cta-form select,
        .cta-form textarea {
            width: 100%;
            padding: 10px 14px;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
            background: #fff;
            color: var(--text-primary);
        }
        .cta-form input:focus,
        .cta-form select:focus,
        .cta-form textarea:focus {
            border-color: var(--brand-orange);
            box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.08);
            outline: none;
        }
        .cta-form .btn-submit {
            width: 100%;
            background: var(--brand-orange);
            color: #fff;
            border: none;
            padding: 12px;
            border-radius: var(--radius-full);
            font-weight: 700;
            font-size: 1rem;
            transition: all var(--transition-smooth);
            margin-top: 8px;
        }
        .cta-form .btn-submit:hover {
            background: var(--brand-orange-dark);
            box-shadow: var(--shadow-md);
            transform: translateY(-1px);
        }
        .cta-form .privacy-note {
            font-size: 0.75rem;
            color: var(--text-muted);
            text-align: center;
            margin-top: 8px;
            line-height: 1.4;
        }
        @media (max-width: 768px) {
            .cta-form-inner {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .cta-form-block {
                padding: 28px 20px;
                border-radius: var(--radius-lg);
            }
            .cta-form-info h3 {
                font-size: 1.25rem;
            }
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            border-bottom: 1px solid var(--border-color);
            padding: 16px 0;
            cursor: pointer;
            transition: all var(--transition-fast);
        }
        .faq-item:first-child {
            border-top: 1px solid var(--border-color);
        }
        .faq-question {
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-primary);
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            transition: color var(--transition-fast);
        }
        .faq-item:hover .faq-question {
            color: var(--brand-orange);
        }
        .faq-icon {
            font-size: 1.2rem;
            flex-shrink: 0;
            transition: transform var(--transition-smooth);
            color: var(--brand-orange);
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding-top: 8px;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--brand-navy);
            color: rgba(255, 255, 255, 0.8);
            padding: 40px 0 20px;
            font-size: 0.9rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 30px;
            margin-bottom: 24px;
        }
        .footer-brand h3 {
            color: #fff;
            font-weight: 700;
            font-size: 1.3rem;
            margin-bottom: 8px;
        }
        .footer-brand p {
            font-size: 0.85rem;
            line-height: 1.6;
            color: rgba(255, 255, 255, 0.6);
            margin: 0;
        }
        .footer-col h4 {
            color: #fff;
            font-weight: 600;
            font-size: 1rem;
            margin-bottom: 10px;
        }
        .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.85rem;
            padding: 4px 0;
            transition: color var(--transition-fast);
        }
        .footer-col a:hover {
            color: var(--brand-orange);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 16px;
            display: flex;
            flex-wrap: wrap;
            gap: 10px 20px;
            font-size: 0.78rem;
            color: rgba(255, 255, 255, 0.45);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom a:hover {
            color: var(--brand-orange);
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 4px;
            }
        }

        /* ========== UTILITY ========== */
        .mb-0 {
            margin-bottom: 0 !important;
        }
        .mb-2 {
            margin-bottom: 8px !important;
        }
        .mb-3 {
            margin-bottom: 16px !important;
        }
        .mb-4 {
            margin-bottom: 24px !important;
        }
        .mt-2 {
            margin-top: 8px !important;
        }
        .mt-3 {
            margin-top: 16px !important;
        }
        .mt-4 {
            margin-top: 24px !important;
        }
        .gap-2 {
            gap: 8px;
        }
        .d-flex {
            display: flex;
        }
        .flex-wrap {
            flex-wrap: wrap;
        }
        .align-items-center {
            align-items: center;
        }
        .justify-content-between {
            justify-content: space-between;
        }

        /* Modal overlay for form */
        .modal-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.6);
            z-index: 2000;
            align-items: center;
            justify-content: center;
            backdrop-filter: blur(2px);
        }
        .modal-overlay.show {
            display: flex;
        }
        .modal-dialog-custom {
            background: #fff;
            border-radius: var(--radius-xl);
            padding: 32px;
            max-width: 480px;
            width: 90%;
            position: relative;
            box-shadow: var(--shadow-xl);
        }
        .modal-close {
            position: absolute;
            top: 12px;
            right: 16px;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--text-muted);
            cursor: pointer;
        }
        .modal-close:hover {
            color: var(--text-primary);
        }

/* roulang page: category1 */
:root {
            --color-primary: #1B2A4A;
            --color-primary-light: #243660;
            --color-accent: #FF5F3E;
            --color-accent-hover: #e84d2d;
            --color-accent-light: #fff3ef;
            --color-bg: #F8F9FB;
            --color-surface: #ffffff;
            --color-text: #2D3748;
            --color-text-strong: #1a1f2e;
            --color-text-weak: #718096;
            --color-text-muted: #9CA3AF;
            --color-border: #E2E8F0;
            --color-border-light: #EDF2F7;
            --color-success: #38A169;
            --color-warning: #F6AD55;
            --color-info: #4299E1;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --radius-full: 50%;
            --shadow-xs: 0 1px 3px rgba(0, 0, 0, 0.04);
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 6px 24px rgba(0, 0, 0, 0.09);
            --shadow-lg: 0 14px 48px rgba(0, 0, 0, 0.12);
            --shadow-xl: 0 24px 64px rgba(0, 0, 0, 0.16);
            --shadow-card-hover: 0 10px 36px rgba(0, 0, 0, 0.13);
            --transition-fast: 0.18s ease;
            --transition-smooth: 0.28s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-bounce: 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
            --font-heading: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
            --container-max: 1200px;
            --container-padding: 20px;
            --header-height: auto;
            --brand-row-height: 62px;
            --channel-row-height: 48px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            overflow-x: hidden;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--color-accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            outline: none;
        }
        button:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 3px solid rgba(255, 95, 62, 0.4);
            outline-offset: 3px;
            border-radius: 4px;
        }
        ul,
        ol {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        input {
            font-family: inherit;
            font-size: inherit;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-sm);
            padding: 10px 14px;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
            background: var(--color-surface);
            color: var(--color-text);
        }
        input:focus {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(255, 95, 62, 0.1);
            outline: none;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: var(--container-padding);
            padding-right: var(--container-padding);
        }

        /* ========== HEADER ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: #ffffff;
            box-shadow: var(--shadow-sm);
        }
        .brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 var(--container-padding);
            height: var(--brand-row-height);
            gap: 16px;
        }
        .logo-link {
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 800;
            font-size: 1.35rem;
            color: var(--color-primary);
            font-family: var(--font-heading);
            letter-spacing: -0.5px;
            white-space: nowrap;
            flex-shrink: 0;
            transition: color var(--transition-fast);
        }
        .logo-link:hover {
            color: var(--color-accent);
        }
        .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: var(--color-accent);
            color: #fff;
            border-radius: var(--radius-sm);
            font-weight: 900;
            font-size: 1.15rem;
            flex-shrink: 0;
        }
        .search-box {
            display: flex;
            align-items: center;
            background: var(--color-bg);
            border-radius: 24px;
            padding: 6px 16px;
            gap: 8px;
            flex: 1;
            max-width: 400px;
            border: 1.5px solid transparent;
            transition: all var(--transition-smooth);
        }
        .search-box:focus-within {
            border-color: var(--color-accent);
            background: #fff;
            box-shadow: 0 0 0 4px rgba(255, 95, 62, 0.06);
        }
        .search-box .search-icon {
            font-size: 1rem;
            flex-shrink: 0;
            opacity: 0.55;
        }
        .search-box input {
            border: none;
            background: transparent;
            padding: 6px 0;
            font-size: 0.9rem;
            width: 100%;
            outline: none;
            box-shadow: none;
        }
        .search-box input:focus {
            box-shadow: none;
            outline: none;
        }
        .brand-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .btn-login {
            background: var(--color-accent);
            color: #fff;
            padding: 8px 18px;
            border-radius: 22px;
            font-size: 0.88rem;
            font-weight: 600;
            transition: all var(--transition-smooth);
            white-space: nowrap;
        }
        .btn-login:hover {
            background: var(--color-accent-hover);
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
        }
        .mobile-menu-toggle {
            display: none;
            background: none;
            font-size: 1.5rem;
            color: var(--color-primary);
            padding: 6px 4px;
            line-height: 1;
        }
        .channel-row {
            background: var(--color-primary);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .channel-nav {
            display: flex;
            align-items: center;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 var(--container-padding);
            height: var(--channel-row-height);
            gap: 4px;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }
        .channel-nav::-webkit-scrollbar {
            display: none;
        }
        .channel-nav a {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            border-radius: 20px;
            font-size: 0.9rem;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.78);
            white-space: nowrap;
            transition: all var(--transition-smooth);
            letter-spacing: 0.3px;
            position: relative;
        }
        .channel-nav a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
        }
        .channel-nav a.active {
            color: #fff;
            background: var(--color-accent);
            font-weight: 700;
            box-shadow: 0 2px 12px rgba(255, 95, 62, 0.35);
        }

        /* ========== HERO - 视频官网风格 ========== */
        .hero-video-block {
            position: relative;
            width: 100%;
            min-height: 580px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            overflow: hidden;
        }
        .hero-video-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(160deg, rgba(27, 42, 74, 0.82) 0%, rgba(15, 23, 42, 0.7) 40%, rgba(0, 0, 0, 0.65) 100%);
            z-index: 1;
        }
        .hero-video-content {
            position: relative;
            z-index: 3;
            text-align: center;
            color: #fff;
            padding: 40px 20px;
        }
        .hero-play-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 90px;
            height: 90px;
            border-radius: var(--radius-full);
            background: rgba(255, 255, 255, 0.18);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border: 3px solid rgba(255, 255, 255, 0.55);
            color: #fff;
            font-size: 2rem;
            cursor: pointer;
            transition: all var(--transition-bounce);
            animation: pulse-ring 2.4s ease-in-out infinite;
            margin-bottom: 28px;
            position: relative;
        }
        .hero-play-btn:hover {
            background: var(--color-accent);
            border-color: var(--color-accent);
            transform: scale(1.08);
            box-shadow: 0 0 60px rgba(255, 95, 62, 0.6);
            animation: none;
        }
        @keyframes pulse-ring {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(255, 255, 255, 0.35);
            }
            50% {
                box-shadow: 0 0 0 32px rgba(255, 255, 255, 0);
            }
        }
        .hero-video-content h1 {
            font-family: var(--font-heading);
            font-size: 2.8rem;
            font-weight: 800;
            letter-spacing: -1px;
            margin-bottom: 16px;
            line-height: 1.25;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.45);
        }
        .hero-video-content .hero-subtitle {
            font-size: 1.2rem;
            opacity: 0.9;
            margin-bottom: 32px;
            max-width: 620px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.6;
        }
        .hero-cta-group {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            justify-content: center;
        }
        .btn-hero-primary {
            display: inline-block;
            padding: 14px 34px;
            background: var(--color-accent);
            color: #fff;
            border-radius: 28px;
            font-weight: 700;
            font-size: 1.05rem;
            transition: all var(--transition-smooth);
            letter-spacing: 0.5px;
        }
        .btn-hero-primary:hover {
            background: var(--color-accent-hover);
            transform: translateY(-3px);
            box-shadow: 0 10px 30px rgba(255, 95, 62, 0.45);
            color: #fff;
        }
        .btn-hero-outline {
            display: inline-block;
            padding: 14px 34px;
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.6);
            border-radius: 28px;
            font-weight: 600;
            font-size: 1.05rem;
            transition: all var(--transition-smooth);
        }
        .btn-hero-outline:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
            color: #fff;
            transform: translateY(-3px);
        }
        .hero-video-decor {
            position: absolute;
            z-index: 2;
            pointer-events: none;
        }
        .hero-video-decor.line-left {
            left: 0;
            bottom: 0;
            width: 180px;
            height: 4px;
            background: linear-gradient(90deg, transparent, rgba(255, 95, 62, 0.7));
            border-radius: 0 4px 0 0;
        }
        .hero-video-decor.dot-grid {
            right: 5%;
            top: 15%;
            width: 80px;
            height: 80px;
            background-image: radial-gradient(rgba(255, 255, 255, 0.2) 2px, transparent 2px);
            background-size: 14px 14px;
        }

        /* ========== 板块通用 ========== */
        .section-block {
            padding: 72px 0;
        }
        .section-block.section-alt {
            background: #ffffff;
        }
        .section-block.section-dark {
            background: var(--color-primary);
            color: #fff;
        }
        .section-label {
            display: inline-block;
            font-size: 0.82rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1.5px;
            color: var(--color-accent);
            margin-bottom: 8px;
        }
        .section-heading {
            font-family: var(--font-heading);
            font-size: 2rem;
            font-weight: 800;
            color: var(--color-text-strong);
            margin-bottom: 12px;
            letter-spacing: -0.5px;
            line-height: 1.3;
        }
        .section-dark .section-heading {
            color: #fff;
        }
        .section-subheading {
            font-size: 1.05rem;
            color: var(--color-text-weak);
            margin-bottom: 40px;
            max-width: 650px;
        }
        .section-dark .section-subheading {
            color: rgba(255, 255, 255, 0.7);
        }

        /* ========== 痛点提问区 ========== */
        .pain-point-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }
        .pain-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }
        .pain-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: var(--color-accent);
        }
        .pain-card .pain-icon {
            font-size: 2.2rem;
            margin-bottom: 14px;
            display: block;
        }
        .pain-card h4 {
            font-weight: 700;
            font-size: 1.1rem;
            margin-bottom: 8px;
            color: var(--color-text-strong);
        }
        .pain-card p {
            color: var(--color-text-weak);
            font-size: 0.92rem;
            line-height: 1.6;
            margin: 0;
        }
        .pain-card .pain-badge {
            position: absolute;
            top: 16px;
            right: 16px;
            background: var(--color-accent-light);
            color: var(--color-accent);
            padding: 4px 12px;
            border-radius: 14px;
            font-size: 0.75rem;
            font-weight: 700;
        }

        /* ========== 方案卡片区 ========== */
        .solution-cards-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
            align-items: stretch;
        }
        .solution-card-featured {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--color-border-light);
            display: flex;
            flex-direction: column;
            transition: all var(--transition-smooth);
        }
        .solution-card-featured:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
        }
        .solution-card-featured .card-img-wrap {
            height: 220px;
            overflow: hidden;
            position: relative;
        }
        .solution-card-featured .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-smooth);
        }
        .solution-card-featured:hover .card-img-wrap img {
            transform: scale(1.05);
        }
        .solution-card-featured .card-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .solution-card-featured .card-body h4 {
            font-weight: 700;
            font-size: 1.2rem;
            margin-bottom: 8px;
            color: var(--color-text-strong);
        }
        .solution-card-featured .card-body p {
            color: var(--color-text-weak);
            font-size: 0.93rem;
            flex: 1;
            margin-bottom: 14px;
        }
        .solution-card-featured .card-link {
            font-weight: 700;
            color: var(--color-accent);
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap var(--transition-fast);
        }
        .solution-card-featured .card-link:hover {
            gap: 10px;
            color: var(--color-accent-hover);
        }

        /* ========== 数据统计面板 ========== */
        .stats-panel {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .stat-item {
            text-align: center;
            padding: 32px 16px;
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-smooth);
        }
        .stat-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .stat-number {
            font-family: var(--font-heading);
            font-size: 2.8rem;
            font-weight: 900;
            color: var(--color-accent);
            letter-spacing: -2px;
            line-height: 1;
            margin-bottom: 6px;
        }
        .stat-label {
            font-size: 0.9rem;
            color: var(--color-text-weak);
            font-weight: 500;
        }

        /* ========== 订阅表单区 ========== */
        .subscribe-block {
            background: linear-gradient(135deg, #fff 0%, #fef5f2 100%);
            border-radius: var(--radius-xl);
            padding: 48px 36px;
            border: 2px dashed var(--color-accent);
            position: relative;
            overflow: hidden;
        }
        .subscribe-block::before {
            content: '';
            position: absolute;
            top: -40px;
            right: -40px;
            width: 160px;
            height: 160px;
            background: rgba(255, 95, 62, 0.04);
            border-radius: 50%;
            pointer-events: none;
        }
        .subscribe-form-row {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            max-width: 600px;
            margin-top: 20px;
        }
        .subscribe-form-row input {
            flex: 1;
            min-width: 200px;
            padding: 13px 18px;
            border-radius: 26px;
            font-size: 0.95rem;
        }
        .btn-subscribe {
            padding: 13px 28px;
            background: var(--color-accent);
            color: #fff;
            border-radius: 26px;
            font-weight: 700;
            font-size: 0.95rem;
            transition: all var(--transition-smooth);
            white-space: nowrap;
        }
        .btn-subscribe:hover {
            background: var(--color-accent-hover);
            box-shadow: 0 6px 22px rgba(255, 95, 62, 0.4);
            transform: translateY(-2px);
        }
        .privacy-note {
            font-size: 0.8rem;
            color: var(--color-text-muted);
            margin-top: 12px;
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .privacy-note a {
            color: var(--color-accent);
            text-decoration: underline;
            font-weight: 500;
        }

        /* ========== 编辑推荐区 ========== */
        .editor-picks-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr;
            gap: 24px;
        }
        .editor-main-card {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-smooth);
        }
        .editor-main-card:hover {
            box-shadow: var(--shadow-lg);
        }
        .editor-main-card .card-media {
            height: 300px;
            overflow: hidden;
        }
        .editor-main-card .card-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-smooth);
        }
        .editor-main-card:hover .card-media img {
            transform: scale(1.04);
        }
        .editor-main-card .card-info {
            padding: 24px;
        }
        .editor-main-card .card-info h4 {
            font-weight: 700;
            font-size: 1.25rem;
            margin-bottom: 8px;
        }
        .editor-main-card .card-info p {
            color: var(--color-text-weak);
            font-size: 0.93rem;
            margin-bottom: 12px;
        }
        .editor-side-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .editor-side-item {
            background: #fff;
            border-radius: var(--radius-md);
            padding: 18px 20px;
            border: 1px solid var(--color-border-light);
            display: flex;
            gap: 14px;
            align-items: center;
            transition: all var(--transition-smooth);
        }
        .editor-side-item:hover {
            box-shadow: var(--shadow-sm);
            border-color: var(--color-accent);
            transform: translateX(3px);
        }
        .editor-side-item .side-thumb {
            width: 70px;
            height: 70px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
        }
        .editor-side-item .side-info h5 {
            font-weight: 700;
            font-size: 0.95rem;
            margin-bottom: 4px;
            color: var(--color-text-strong);
        }
        .editor-side-item .side-info span {
            font-size: 0.8rem;
            color: var(--color-text-muted);
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: #fff;
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            border: 1px solid var(--color-border-light);
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-item:hover {
            border-color: var(--color-accent);
        }
        .faq-question {
            padding: 18px 24px;
            font-weight: 700;
            font-size: 1.02rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--color-text-strong);
            user-select: none;
        }
        .faq-question .faq-arrow {
            transition: transform var(--transition-smooth);
            font-size: 0.85rem;
            color: var(--color-accent);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question .faq-arrow {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-smooth), padding var(--transition-smooth);
            padding: 0 24px;
            color: var(--color-text-weak);
            font-size: 0.93rem;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 18px;
        }

        /* ========== CTA区块 ========== */
        .cta-final-block {
            text-align: center;
            padding: 64px 20px;
            background: linear-gradient(160deg, var(--color-primary) 0%, #0f172a 100%);
            color: #fff;
            border-radius: var(--radius-xl);
            margin: 0 var(--container-padding);
            position: relative;
            overflow: hidden;
        }
        .cta-final-block::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 70% 30%, rgba(255, 95, 62, 0.18) 0%, transparent 60%);
            pointer-events: none;
        }
        .cta-final-block h2 {
            font-family: var(--font-heading);
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }
        .cta-final-block p {
            font-size: 1.05rem;
            opacity: 0.85;
            margin-bottom: 28px;
            position: relative;
            z-index: 1;
        }
        .cta-final-block .btn-hero-primary {
            position: relative;
            z-index: 1;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #111827;
            color: #d1d5db;
            padding: 56px 0 28px;
            margin-top: 60px;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 36px;
        }
        .site-footer h3 {
            color: #fff;
            font-weight: 800;
            font-size: 1.3rem;
            margin-bottom: 12px;
        }
        .site-footer h4 {
            color: #fff;
            font-weight: 700;
            font-size: 0.95rem;
            margin-bottom: 14px;
        }
        .site-footer .footer-brand p {
            font-size: 0.88rem;
            line-height: 1.7;
            opacity: 0.8;
        }
        .site-footer .footer-col {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .site-footer .footer-col a {
            font-size: 0.88rem;
            opacity: 0.75;
            transition: all var(--transition-fast);
        }
        .site-footer .footer-col a:hover {
            opacity: 1;
            color: #fff;
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            font-size: 0.78rem;
            opacity: 0.65;
            justify-content: center;
            text-align: center;
        }
        .site-footer .footer-bottom a {
            color: #d1d5db;
        }
        .site-footer .footer-bottom a:hover {
            color: #fff;
        }

        /* ========== 通用按钮与标签 ========== */
        .tag-accent {
            display: inline-block;
            background: var(--color-accent-light);
            color: var(--color-accent);
            padding: 4px 12px;
            border-radius: 14px;
            font-size: 0.78rem;
            font-weight: 700;
            letter-spacing: 0.3px;
        }
        .tag-outline {
            display: inline-block;
            border: 1px solid var(--color-border);
            color: var(--color-text-weak);
            padding: 4px 12px;
            border-radius: 14px;
            font-size: 0.78rem;
            font-weight: 600;
        }
        .divider-accent {
            width: 60px;
            height: 4px;
            background: var(--color-accent);
            border-radius: 2px;
            margin: 8px 0 20px;
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            .hero-video-content h1 {
                font-size: 2.2rem;
            }
            .hero-video-content .hero-subtitle {
                font-size: 1rem;
            }
            .hero-video-block {
                min-height: 460px;
            }
            .hero-play-btn {
                width: 72px;
                height: 72px;
                font-size: 1.5rem;
            }
            .stats-panel {
                grid-template-columns: repeat(2, 1fr);
            }
            .solution-cards-row {
                grid-template-columns: 1fr;
            }
            .editor-picks-grid {
                grid-template-columns: 1fr;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .section-block {
                padding: 48px 0;
            }
            .section-heading {
                font-size: 1.6rem;
            }
        }
        @media (max-width: 768px) {
            .brand-row {
                height: 54px;
            }
            .search-box {
                display: none;
            }
            .btn-login.desktop-only {
                display: none;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .channel-nav {
                flex-wrap: nowrap;
                gap: 2px;
                height: auto;
                padding: 8px var(--container-padding);
                justify-content: flex-start;
            }
            .channel-nav a {
                padding: 7px 13px;
                font-size: 0.8rem;
                border-radius: 16px;
            }
            .channel-row.collapsed-mobile .channel-nav {
                display: none;
            }
            .hero-video-block {
                min-height: 380px;
            }
            .hero-video-content h1 {
                font-size: 1.7rem;
            }
            .hero-video-content .hero-subtitle {
                font-size: 0.9rem;
            }
            .hero-play-btn {
                width: 60px;
                height: 60px;
                font-size: 1.3rem;
                border-width: 2px;
                margin-bottom: 18px;
            }
            .btn-hero-primary,
            .btn-hero-outline {
                padding: 12px 24px;
                font-size: 0.9rem;
            }
            .stats-panel {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-number {
                font-size: 2rem;
            }
            .pain-point-grid {
                grid-template-columns: 1fr;
            }
            .subscribe-block {
                padding: 28px 18px;
            }
            .subscribe-form-row {
                flex-direction: column;
            }
            .cta-final-block h2 {
                font-size: 1.6rem;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .section-heading {
                font-size: 1.4rem;
            }
            .editor-side-item {
                flex-direction: column;
                align-items: flex-start;
            }
            .editor-side-item .side-thumb {
                width: 100%;
                height: 140px;
            }
        }
        @media (max-width: 520px) {
            .hero-video-block {
                min-height: 320px;
            }
            .hero-video-content h1 {
                font-size: 1.4rem;
            }
            .hero-play-btn {
                width: 50px;
                height: 50px;
                font-size: 1.1rem;
            }
            .stats-panel {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }
            .stat-item {
                padding: 18px 8px;
            }
            .stat-number {
                font-size: 1.6rem;
            }
            .stat-label {
                font-size: 0.75rem;
            }
            .logo-link {
                font-size: 1.1rem;
            }
            .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 0.9rem;
            }
            .section-block {
                padding: 36px 0;
            }
            .btn-hero-primary,
            .btn-hero-outline {
                padding: 10px 18px;
                font-size: 0.82rem;
                border-radius: 22px;
            }
        }

/* roulang page: category5 */
:root {
            --color-primary: #1a1a2e;
            --color-primary-light: #252540;
            --color-accent: #ff5c3c;
            --color-accent-hover: #e04a2e;
            --color-gold: #f0b90b;
            --color-gold-light: #ffe57f;
            --color-white: #ffffff;
            --color-off-white: #f5f5f7;
            --color-light-gray: #e8e8ec;
            --color-mid-gray: #b0b0b8;
            --color-text: #1d1d2c;
            --color-text-light: #5a5a6e;
            --color-text-on-dark: #e0e0e8;
            --color-bg-dark: #111122;
            --color-bg-card: #ffffff;
            --color-border: #e2e2e8;
            --color-success: #2ecc71;
            --color-tag-bg: rgba(240, 185, 11, 0.15);
            --color-overlay: rgba(0, 0, 0, 0.65);
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.1);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.14);
            --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.2);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-full: 50px;
            --transition-fast: 0.18s ease;
            --transition-base: 0.28s ease;
            --transition-slow: 0.4s ease;
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
            --container-max: 1240px;
            --container-narrow: 960px;
            --header-height: 0px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-off-white);
            min-height: 100vh;
            overflow-x: hidden;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            outline: none;
            transition: all var(--transition-base);
        }

        button:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 3px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: 4px;
        }

        input {
            font-family: inherit;
            font-size: 1rem;
        }

        ul,
        ol {
            list-style: none;
        }

        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        .container-narrow {
            width: 100%;
            max-width: var(--container-narrow);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--color-primary);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.25);
        }

        .brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 28px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            gap: 16px;
        }

        .logo-link {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--color-white);
            white-space: nowrap;
            letter-spacing: 0.5px;
            transition: opacity var(--transition-fast);
        }

        .logo-link:hover {
            opacity: 0.85;
        }

        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: var(--color-accent);
            color: #fff;
            border-radius: var(--radius-sm);
            font-weight: 900;
            font-size: 1.2rem;
            letter-spacing: 0;
        }

        .search-box {
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-full);
            padding: 8px 16px;
            gap: 8px;
            flex: 1;
            max-width: 420px;
            border: 1px solid rgba(255, 255, 255, 0.15);
            transition: border-color var(--transition-fast), background var(--transition-fast);
        }

        .search-box:focus-within {
            border-color: var(--color-accent);
            background: rgba(255, 255, 255, 0.18);
        }

        .search-icon {
            font-size: 1rem;
            flex-shrink: 0;
        }

        .search-box input {
            background: transparent;
            border: none;
            color: #fff;
            width: 100%;
            font-size: 0.95rem;
            outline: none;
        }

        .search-box input::placeholder {
            color: rgba(255, 255, 255, 0.55);
        }

        .brand-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .btn-login {
            background: var(--color-accent);
            color: #fff;
            padding: 9px 20px;
            border-radius: var(--radius-full);
            font-size: 0.9rem;
            font-weight: 600;
            white-space: nowrap;
            transition: all var(--transition-base);
            letter-spacing: 0.3px;
        }

        .btn-login:hover {
            background: var(--color-accent-hover);
            transform: translateY(-1px);
            box-shadow: 0 4px 14px rgba(255, 92, 60, 0.4);
        }

        .mobile-menu-toggle {
            display: none;
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
            font-size: 1.4rem;
            padding: 6px 12px;
            border-radius: var(--radius-sm);
            border: 1px solid rgba(255, 255, 255, 0.2);
        }

        /* Channel Nav */
        .channel-row {
            padding: 0 28px;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: thin;
            scrollbar-color: rgba(255, 255, 255, 0.2) transparent;
        }

        .channel-row::-webkit-scrollbar {
            height: 4px;
        }

        .channel-row::-webkit-scrollbar-thumb {
            background: rgba(255, 255, 255, 0.25);
            border-radius: 4px;
        }

        .channel-nav {
            display: flex;
            gap: 4px;
            padding: 8px 0;
            white-space: nowrap;
            min-width: max-content;
        }

        .channel-nav a {
            display: inline-block;
            padding: 10px 18px;
            color: rgba(255, 255, 255, 0.78);
            font-size: 0.95rem;
            font-weight: 500;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            letter-spacing: 0.3px;
            position: relative;
        }

        .channel-nav a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
        }

        .channel-nav a.active {
            color: #fff;
            font-weight: 700;
            background: rgba(255, 255, 255, 0.13);
        }

        .channel-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 24px;
            height: 3px;
            background: var(--color-accent);
            border-radius: 3px;
        }

        /* Hero - 暗底沉浸式 */
        .hero-dark {
            position: relative;
            min-height: 580px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--color-bg-dark) url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            background-attachment: fixed;
            overflow: hidden;
        }

        .hero-dark::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(17, 17, 34, 0.82) 0%, rgba(17, 17, 34, 0.7) 40%, rgba(10, 10, 24, 0.88) 100%);
            z-index: 1;
        }

        .hero-dark .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            color: #fff;
            padding: 60px 24px;
            max-width: 800px;
        }

        .hero-badge-row {
            display: flex;
            justify-content: center;
            gap: 10px;
            flex-wrap: wrap;
            margin-bottom: 20px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            background: var(--color-tag-bg);
            color: var(--color-gold-light);
            padding: 6px 14px;
            border-radius: var(--radius-full);
            font-size: 0.85rem;
            font-weight: 600;
            border: 1px solid rgba(240, 185, 11, 0.3);
            letter-spacing: 0.4px;
        }

        .hero-badge.hot {
            background: rgba(255, 92, 60, 0.2);
            color: #ff8a70;
            border-color: rgba(255, 92, 60, 0.4);
            animation: pulse-badge 2.2s ease-in-out infinite;
        }

        @keyframes pulse-badge {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(255, 92, 60, 0.5);
            }
            50% {
                box-shadow: 0 0 0 10px rgba(255, 92, 60, 0);
            }
        }

        .hero-dark h1 {
            font-size: 3.2rem;
            font-weight: 900;
            letter-spacing: 1px;
            margin-bottom: 16px;
            line-height: 1.25;
            text-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
        }

        .hero-dark .hero-subtitle {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 32px;
            line-height: 1.6;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .hero-cta-group {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn-hero-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--color-accent);
            color: #fff;
            padding: 14px 32px;
            border-radius: var(--radius-full);
            font-size: 1.05rem;
            font-weight: 700;
            letter-spacing: 0.5px;
            transition: all var(--transition-base);
            box-shadow: 0 6px 24px rgba(255, 92, 60, 0.45);
        }

        .btn-hero-primary:hover {
            background: #ff4520;
            transform: translateY(-3px);
            box-shadow: 0 10px 32px rgba(255, 92, 60, 0.6);
        }

        .btn-hero-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: #fff;
            padding: 14px 32px;
            border-radius: var(--radius-full);
            font-size: 1.05rem;
            font-weight: 600;
            border: 2px solid rgba(255, 255, 255, 0.5);
            letter-spacing: 0.5px;
            transition: all var(--transition-base);
        }

        .btn-hero-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.08);
            transform: translateY(-3px);
        }

        /* Sections */
        .section {
            padding: 72px 0;
        }

        .section-dark {
            background: var(--color-primary);
            color: #fff;
            padding: 72px 0;
        }

        .section-light {
            background: var(--color-white);
            padding: 72px 0;
        }

        .section-label {
            display: inline-block;
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--color-accent);
            text-transform: uppercase;
            letter-spacing: 1.2px;
            margin-bottom: 10px;
        }

        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
            line-height: 1.3;
        }

        .section-subtitle {
            font-size: 1.1rem;
            color: var(--color-text-light);
            margin-bottom: 40px;
            line-height: 1.6;
        }

        .section-dark .section-title {
            color: #fff;
        }
        .section-dark .section-subtitle {
            color: rgba(255, 255, 255, 0.7);
        }
        .section-dark .section-label {
            color: var(--color-gold-light);
        }

        /* Pain Point */
        .pain-point-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 20px;
            margin-top: 32px;
        }

        .pain-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border);
            transition: all var(--transition-base);
            display: flex;
            gap: 14px;
            align-items: flex-start;
        }

        .pain-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: #d0d0d8;
        }

        .pain-icon {
            font-size: 2.2rem;
            flex-shrink: 0;
            width: 52px;
            height: 52px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: #fff5f3;
            border-radius: var(--radius-md);
        }

        .pain-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 4px;
            color: var(--color-text);
        }

        .pain-card p {
            font-size: 0.95rem;
            color: var(--color-text-light);
            line-height: 1.5;
        }

        /* Solution Cards */
        .solution-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
            margin-top: 32px;
        }

        .solution-card {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border);
            transition: all var(--transition-base);
        }

        .solution-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: transparent;
        }

        .solution-card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
        }

        .solution-card-body {
            padding: 22px 20px;
        }

        .solution-card-body h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 6px;
        }

        .solution-card-body p {
            font-size: 0.95rem;
            color: var(--color-text-light);
            line-height: 1.55;
            margin-bottom: 14px;
        }

        .solution-tags {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            margin-bottom: 14px;
        }

        .solution-tag {
            font-size: 0.8rem;
            padding: 4px 10px;
            border-radius: var(--radius-full);
            background: #f0f0f5;
            color: var(--color-text-light);
            font-weight: 500;
        }

        .btn-card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 700;
            color: var(--color-accent);
            font-size: 0.95rem;
            transition: gap var(--transition-fast);
        }

        .btn-card-link:hover {
            gap: 10px;
            color: var(--color-accent-hover);
        }

        /* Data Strip */
        .data-strip {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 24px;
            text-align: center;
            margin-top: 32px;
        }

        .data-item {
            padding: 24px 16px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-lg);
            border: 1px solid rgba(255, 255, 255, 0.12);
            transition: all var(--transition-base);
        }

        .data-item:hover {
            background: rgba(255, 255, 255, 0.12);
            transform: translateY(-3px);
        }

        .data-number {
            font-size: 2.8rem;
            font-weight: 900;
            color: var(--color-gold-light);
            letter-spacing: 1px;
            line-height: 1.1;
        }

        .data-label {
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 6px;
        }

        /* Hot Products */
        .hot-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 22px;
            margin-top: 32px;
        }

        .hot-card {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border);
            transition: all var(--transition-base);
            position: relative;
        }

        .hot-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-5px);
            border-color: transparent;
        }

        .hot-card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--color-accent);
            color: #fff;
            padding: 5px 12px;
            border-radius: var(--radius-full);
            font-size: 0.78rem;
            font-weight: 700;
            z-index: 2;
            letter-spacing: 0.5px;
        }

        .hot-card-img {
            width: 100%;
            height: 220px;
            object-fit: cover;
        }

        .hot-card-body {
            padding: 18px 16px;
        }

        .hot-card-body h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 4px;
        }

        .hot-card-body .hot-price {
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--color-accent);
        }

        .hot-card-body .hot-price-original {
            font-size: 0.9rem;
            color: #aaa;
            text-decoration: line-through;
            margin-left: 8px;
        }

        .hot-card-body .hot-meta {
            font-size: 0.85rem;
            color: var(--color-text-light);
            margin-top: 4px;
        }

        /* Guide Steps */
        .guide-steps {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
            margin-top: 32px;
            counter-reset: step;
        }

        .guide-step {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 28px 22px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border);
            text-align: center;
            position: relative;
            transition: all var(--transition-base);
        }

        .guide-step:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        .guide-step-num {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--color-accent);
            color: #fff;
            font-size: 1.3rem;
            font-weight: 900;
            margin: 0 auto 14px;
        }

        .guide-step h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .guide-step p {
            font-size: 0.9rem;
            color: var(--color-text-light);
            line-height: 1.5;
        }

        /* Brand Partners */
        .brand-strip {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 28px;
            align-items: center;
            margin-top: 32px;
            padding: 28px;
            background: #fff;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
        }

        .brand-pill {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--color-text);
            padding: 8px 18px;
            background: #f7f7fa;
            border-radius: var(--radius-full);
            letter-spacing: 1px;
            transition: all var(--transition-fast);
        }

        .brand-pill:hover {
            background: #eeeef3;
            transform: scale(1.04);
        }

        /* FAQ */
        .faq-list {
            max-width: 780px;
            margin: 32px auto 0;
        }

        .faq-item {
            background: #fff;
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            border: 1px solid var(--color-border);
            overflow: hidden;
            transition: all var(--transition-fast);
        }

        .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }

        .faq-question {
            padding: 18px 22px;
            font-weight: 700;
            font-size: 1.05rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
            color: var(--color-text);
            background: #fafafc;
            transition: background var(--transition-fast);
        }

        .faq-question:hover {
            background: #f0f0f5;
        }

        .faq-answer {
            padding: 0 22px 18px;
            font-size: 0.95rem;
            color: var(--color-text-light);
            line-height: 1.65;
            display: none;
        }

        .faq-item.open .faq-answer {
            display: block;
        }
        .faq-item.open .faq-question {
            background: #fff;
            color: var(--color-accent);
        }

        .faq-arrow {
            transition: transform var(--transition-fast);
            font-size: 0.8rem;
            flex-shrink: 0;
        }
        .faq-item.open .faq-arrow {
            transform: rotate(180deg);
        }

        /* CTA Area */
        .cta-area {
            background: linear-gradient(135deg, #1a1a2e 0%, #252545 60%, #1f1f38 100%);
            border-radius: var(--radius-xl);
            padding: 48px 36px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-xl);
        }

        .cta-area::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            background: radial-gradient(circle, rgba(255, 92, 60, 0.3) 0%, transparent 70%);
            border-radius: 50%;
        }

        .cta-area h2 {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 10px;
            position: relative;
            z-index: 1;
        }
        .cta-area p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 24px;
            position: relative;
            z-index: 1;
        }

        .cta-form-inline {
            display: flex;
            gap: 10px;
            justify-content: center;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
            max-width: 500px;
            margin: 0 auto;
        }

        .cta-form-inline input {
            flex: 1;
            min-width: 200px;
            padding: 13px 18px;
            border-radius: var(--radius-full);
            border: 2px solid transparent;
            font-size: 0.95rem;
            background: #fff;
            color: var(--color-text);
            transition: all var(--transition-fast);
        }

        .cta-form-inline input:focus {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 6px rgba(255, 92, 60, 0.15);
        }

        .btn-cta-submit {
            background: var(--color-accent);
            color: #fff;
            padding: 13px 28px;
            border-radius: var(--radius-full);
            font-weight: 700;
            font-size: 1rem;
            letter-spacing: 0.5px;
            white-space: nowrap;
            transition: all var(--transition-base);
            box-shadow: 0 6px 20px rgba(255, 92, 60, 0.4);
        }

        .btn-cta-submit:hover {
            background: #ff4520;
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(255, 92, 60, 0.55);
        }

        .cta-privacy {
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.5);
            margin-top: 14px;
            position: relative;
            z-index: 1;
        }
        .cta-privacy a {
            color: rgba(255, 255, 255, 0.7);
            text-decoration: underline;
        }
        .cta-privacy a:hover {
            color: #fff;
        }

        /* Modal */
        .modal-overlay {
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.7);
            z-index: 9999;
            display: flex;
            align-items: center;
            justify-content: center;
            opacity: 0;
            pointer-events: none;
            transition: opacity var(--transition-base);
        }

        .modal-overlay.active {
            opacity: 1;
            pointer-events: auto;
        }

        .modal-dialog {
            background: #fff;
            border-radius: var(--radius-xl);
            padding: 36px 28px;
            max-width: 480px;
            width: 90%;
            text-align: center;
            box-shadow: var(--shadow-xl);
            position: relative;
        }

        .modal-close {
            position: absolute;
            top: 12px;
            right: 16px;
            background: #f0f0f5;
            border-radius: 50%;
            width: 36px;
            height: 36px;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #666;
            transition: all var(--transition-fast);
        }
        .modal-close:hover {
            background: #e0e0e8;
            color: #333;
        }

        .modal-dialog h3 {
            font-size: 1.4rem;
            font-weight: 800;
            margin-bottom: 16px;
        }
        .modal-dialog p {
            color: var(--color-text-light);
            margin-bottom: 18px;
            font-size: 0.95rem;
        }
        .modal-dialog input {
            width: 100%;
            padding: 12px 16px;
            border-radius: var(--radius-md);
            border: 2px solid var(--color-border);
            font-size: 0.95rem;
            margin-bottom: 10px;
            transition: border-color var(--transition-fast);
        }
        .modal-dialog input:focus {
            border-color: var(--color-accent);
        }
        .modal-dialog .btn-modal-submit {
            width: 100%;
            padding: 13px;
            background: var(--color-accent);
            color: #fff;
            font-weight: 700;
            font-size: 1rem;
            border-radius: var(--radius-full);
            letter-spacing: 0.5px;
            transition: all var(--transition-base);
        }
        .modal-dialog .btn-modal-submit:hover {
            background: #ff4520;
        }
        .modal-privacy {
            font-size: 0.78rem;
            color: #999;
            margin-top: 10px;
        }
        .modal-privacy a {
            color: var(--color-accent);
            text-decoration: underline;
        }

        /* Footer */
        .site-footer {
            background: #0d0d1a;
            color: rgba(255, 255, 255, 0.75);
            padding: 52px 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-brand h3 {
            color: #fff;
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.6;
            color: rgba(255, 255, 255, 0.6);
        }

        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .footer-col a {
            display: block;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.6);
            padding: 5px 0;
            transition: color var(--transition-fast);
        }
        .footer-col a:hover {
            color: #fff;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 18px;
            display: flex;
            flex-wrap: wrap;
            gap: 14px 20px;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.45);
            justify-content: center;
            text-align: center;
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.55);
            text-decoration: underline;
        }
        .footer-bottom a:hover {
            color: #fff;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .hero-dark h1 {
                font-size: 2.4rem;
            }
            .section-title {
                font-size: 1.7rem;
            }
            .data-number {
                font-size: 2.2rem;
            }
            .hero-dark {
                min-height: 460px;
                background-attachment: scroll;
            }
        }

        @media (max-width: 768px) {
            .brand-row {
                padding: 10px 16px;
            }
            .search-box {
                max-width: 200px;
                padding: 6px 12px;
            }
            .desktop-only {
                display: none;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .channel-row {
                padding: 0 10px;
            }
            .channel-nav a {
                padding: 9px 12px;
                font-size: 0.85rem;
            }
            .hero-dark h1 {
                font-size: 1.9rem;
            }
            .hero-dark .hero-subtitle {
                font-size: 1rem;
            }
            .btn-hero-primary,
            .btn-hero-outline {
                padding: 12px 22px;
                font-size: 0.95rem;
            }
            .section {
                padding: 44px 0;
            }
            .section-dark {
                padding: 44px 0;
            }
            .section-light {
                padding: 44px 0;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .hero-dark {
                min-height: 400px;
            }
            .data-strip {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }
            .data-number {
                font-size: 1.8rem;
            }
            .cta-area {
                padding: 32px 18px;
            }
            .cta-area h2 {
                font-size: 1.5rem;
            }
            .cta-form-inline {
                flex-direction: column;
                align-items: stretch;
            }
            .solution-grid {
                grid-template-columns: 1fr;
            }
            .hot-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }
            .hot-card-img {
                height: 160px;
            }
            .guide-steps {
                grid-template-columns: repeat(2, 1fr);
            }
            .pain-point-grid {
                grid-template-columns: 1fr;
            }
            .hero-badge-row {
                gap: 6px;
            }
            .hero-badge {
                font-size: 0.75rem;
                padding: 4px 10px;
            }
        }

        @media (max-width: 520px) {
            .hero-dark h1 {
                font-size: 1.5rem;
            }
            .hero-dark .hero-subtitle {
                font-size: 0.9rem;
            }
            .hero-cta-group {
                flex-direction: column;
                align-items: center;
            }
            .btn-hero-primary,
            .btn-hero-outline {
                width: 100%;
                justify-content: center;
            }
            .hot-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .hot-card-img {
                height: 140px;
            }
            .hot-card-body h3 {
                font-size: 0.9rem;
            }
            .guide-steps {
                grid-template-columns: 1fr;
            }
            .data-strip {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .brand-strip {
                gap: 14px;
                padding: 18px 12px;
            }
            .brand-pill {
                font-size: 0.9rem;
                padding: 6px 12px;
            }
            .container {
                padding: 0 14px;
            }
            .container-narrow {
                padding: 0 14px;
            }
            .section-title {
                font-size: 1.3rem;
            }
            .cta-area h2 {
                font-size: 1.3rem;
            }
        }

/* roulang page: category4 */
:root {
            --color-primary: #FF6B35;
            --color-primary-hover: #e85d2c;
            --color-primary-light: #fff0eb;
            --color-secondary: #1a1a2e;
            --color-secondary-light: #252540;
            --color-accent: #2ecc71;
            --color-accent-hover: #27ae60;
            --color-bg: #f8f9fa;
            --color-bg-white: #ffffff;
            --color-bg-dark: #1a1a2e;
            --color-text: #2d3436;
            --color-text-light: #636e72;
            --color-text-white: #f1f2f6;
            --color-border: #e0e4e8;
            --color-border-light: #f0f2f5;
            --color-shadow: rgba(26, 26, 46, 0.08);
            --color-shadow-md: rgba(26, 26, 46, 0.14);
            --color-shadow-lg: rgba(26, 26, 46, 0.20);
            --color-danger: #e74c3c;
            --color-warning: #f39c12;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 22px;
            --radius-full: 9999px;
            --shadow-sm: 0 1px 3px var(--color-shadow);
            --shadow-md: 0 4px 14px var(--color-shadow-md);
            --shadow-lg: 0 8px 30px var(--color-shadow-lg);
            --shadow-xl: 0 16px 48px rgba(26, 26, 46, 0.22);
            --transition-fast: 0.18s ease;
            --transition-normal: 0.28s ease;
            --transition-slow: 0.4s cubic-bezier(0.25, 0.8, 0.25, 1.2);
            --font-stack: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --max-width: 1200px;
            --nav-height: 128px;
            --header-brand-height: 58px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.68;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }
        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            outline: none;
        }
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            outline: none;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-sm);
            padding: 10px 14px;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
            width: 100%;
            background: var(--color-bg-white);
        }
        input:focus,
        select:focus,
        textarea:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.10);
        }
        ul {
            list-style: none;
        }

        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }

        .site-header {
            background: var(--color-bg-white);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 1px 0 var(--color-border-light), var(--shadow-sm);
        }
        .brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 10px 20px;
            max-width: var(--max-width);
            margin: 0 auto;
            height: var(--header-brand-height);
            gap: 16px;
        }
        .logo-link {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--color-secondary);
            white-space: nowrap;
            letter-spacing: 0.02em;
            transition: color var(--transition-fast);
        }
        .logo-link:hover {
            color: var(--color-primary);
        }
        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: var(--color-primary);
            color: #fff;
            border-radius: var(--radius-sm);
            font-weight: 800;
            font-size: 1.1rem;
            flex-shrink: 0;
        }
        .search-box {
            display: flex;
            align-items: center;
            background: var(--color-bg);
            border-radius: var(--radius-full);
            padding: 0 16px;
            flex: 1;
            max-width: 360px;
            height: 40px;
            gap: 8px;
            border: 1px solid transparent;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
        }
        .search-box:focus-within {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.08);
            background: var(--color-bg-white);
        }
        .search-box input {
            border: none;
            background: transparent;
            padding: 0;
            font-size: 0.9rem;
            flex: 1;
            box-shadow: none;
        }
        .search-box input:focus {
            box-shadow: none;
            border: none;
        }
        .search-icon {
            font-size: 1rem;
            flex-shrink: 0;
        }
        .brand-actions {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .btn-login {
            background: var(--color-primary);
            color: #fff;
            padding: 8px 18px;
            border-radius: var(--radius-full);
            font-size: 0.88rem;
            font-weight: 600;
            transition: background var(--transition-fast), transform var(--transition-fast);
            white-space: nowrap;
        }
        .btn-login:hover {
            background: var(--color-primary-hover);
            transform: translateY(-1px);
        }
        .btn-login:active {
            transform: scale(0.96);
        }
        .mobile-menu-toggle {
            display: none;
            background: transparent;
            font-size: 1.5rem;
            padding: 6px 10px;
            border-radius: var(--radius-sm);
            color: var(--color-secondary);
            transition: background var(--transition-fast);
        }
        .mobile-menu-toggle:hover {
            background: var(--color-bg);
        }

        .channel-row {
            border-top: 1px solid var(--color-border-light);
            background: var(--color-bg-white);
            padding: 0 20px;
        }
        .channel-nav {
            display: flex;
            align-items: center;
            max-width: var(--max-width);
            margin: 0 auto;
            gap: 4px;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            padding: 6px 0;
        }
        .channel-nav::-webkit-scrollbar {
            display: none;
        }
        .channel-nav a {
            display: inline-flex;
            align-items: center;
            padding: 10px 18px;
            font-size: 0.93rem;
            font-weight: 500;
            color: var(--color-text-light);
            border-radius: var(--radius-full);
            white-space: nowrap;
            transition: all var(--transition-fast);
            position: relative;
            letter-spacing: 0.01em;
        }
        .channel-nav a:hover {
            color: var(--color-primary);
            background: var(--color-primary-light);
        }
        .channel-nav a.active {
            color: var(--color-primary);
            background: var(--color-primary-light);
            font-weight: 700;
        }

        .page-main {
            min-height: 60vh;
        }

        .hero-fitness {
            position: relative;
            background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            min-height: 520px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            color: #fff;
            overflow: hidden;
        }
        .hero-fitness::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(26, 26, 46, 0.75) 0%, rgba(26, 26, 46, 0.88) 100%);
            z-index: 1;
        }
        .hero-fitness .hero-inner {
            position: relative;
            z-index: 2;
            padding: 40px 20px;
            max-width: 800px;
            width: 100%;
        }
        .hero-badge {
            display: inline-block;
            background: var(--color-accent);
            color: #fff;
            padding: 6px 16px;
            border-radius: var(--radius-full);
            font-size: 0.85rem;
            font-weight: 700;
            letter-spacing: 0.04em;
            margin-bottom: 16px;
            animation: pulse-badge 2.2s ease-in-out infinite;
        }
        @keyframes pulse-badge {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(46, 204, 113, 0.5);
            }
            50% {
                box-shadow: 0 0 0 14px rgba(46, 204, 113, 0);
            }
        }
        .hero-fitness h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 12px;
            letter-spacing: 0.03em;
            text-shadow: 0 2px 8px rgba(0, 0, 0, 0.35);
        }
        .hero-fitness .hero-subtitle {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 10px;
            line-height: 1.55;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }
        .countdown-bar {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.22);
            border-radius: var(--radius-full);
            padding: 10px 22px;
            margin: 18px 0 22px;
            font-weight: 600;
            font-size: 1rem;
            color: #fff;
            letter-spacing: 0.02em;
        }
        .countdown-bar .cd-num {
            font-size: 1.5rem;
            font-weight: 800;
            color: #ffeaa7;
            min-width: 36px;
            text-align: center;
        }
        .hero-btns {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            justify-content: center;
            margin-top: 6px;
        }
        .btn-hero-primary {
            background: var(--color-primary);
            color: #fff;
            padding: 14px 30px;
            border-radius: var(--radius-full);
            font-size: 1.05rem;
            font-weight: 700;
            letter-spacing: 0.03em;
            transition: all var(--transition-normal);
            box-shadow: 0 6px 22px rgba(255, 107, 53, 0.35);
        }
        .btn-hero-primary:hover {
            background: var(--color-primary-hover);
            transform: translateY(-3px);
            box-shadow: 0 10px 30px rgba(255, 107, 53, 0.48);
        }
        .btn-hero-secondary {
            background: rgba(255, 255, 255, 0.15);
            color: #fff;
            padding: 14px 30px;
            border-radius: var(--radius-full);
            font-size: 1.05rem;
            font-weight: 700;
            letter-spacing: 0.03em;
            border: 2px solid rgba(255, 255, 255, 0.5);
            transition: all var(--transition-normal);
            backdrop-filter: blur(4px);
        }
        .btn-hero-secondary:hover {
            background: rgba(255, 255, 255, 0.28);
            border-color: #fff;
            transform: translateY(-3px);
        }

        .section {
            padding: 56px 20px;
        }
        .section-title {
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--color-secondary);
            text-align: center;
            margin-bottom: 8px;
            letter-spacing: 0.02em;
        }
        .section-subtitle {
            text-align: center;
            color: var(--color-text-light);
            font-size: 1rem;
            margin-bottom: 36px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }
        .section-divider {
            width: 50px;
            height: 4px;
            background: var(--color-primary);
            border-radius: 2px;
            margin: 0 auto 28px;
        }

        .pain-points-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 20px;
            max-width: var(--max-width);
            margin: 0 auto;
        }
        .pain-card {
            background: var(--color-bg-white);
            border-radius: var(--radius-lg);
            padding: 26px 22px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-normal);
            text-align: center;
        }
        .pain-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: var(--color-primary);
        }
        .pain-card .pain-icon {
            font-size: 2.6rem;
            margin-bottom: 12px;
        }
        .pain-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--color-secondary);
            margin-bottom: 6px;
        }
        .pain-card p {
            font-size: 0.9rem;
            color: var(--color-text-light);
            line-height: 1.55;
        }

        .bg-light {
            background: var(--color-bg-white);
        }
        .bg-dark {
            background: var(--color-bg-dark);
            color: var(--color-text-white);
        }
        .bg-dark .section-title {
            color: #fff;
        }
        .bg-dark .section-subtitle {
            color: rgba(255, 255, 255, 0.7);
        }

        .solution-cards {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 24px;
            max-width: var(--max-width);
            margin: 0 auto;
        }
        .solution-card {
            background: var(--color-bg-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-normal);
            display: flex;
            flex-direction: column;
            border: 1px solid var(--color-border-light);
        }
        .solution-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-5px);
        }
        .solution-card .card-img-wrap {
            height: 200px;
            overflow: hidden;
            position: relative;
        }
        .solution-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .solution-card:hover .card-img-wrap img {
            transform: scale(1.06);
        }
        .solution-card .card-body {
            padding: 20px 18px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .solution-card .card-tag {
            display: inline-block;
            background: var(--color-primary-light);
            color: var(--color-primary);
            font-size: 0.78rem;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: var(--radius-full);
            margin-bottom: 10px;
            align-self: flex-start;
        }
        .solution-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--color-secondary);
            margin-bottom: 8px;
        }
        .solution-card p {
            font-size: 0.9rem;
            color: var(--color-text-light);
            line-height: 1.55;
            flex: 1;
        }
        .solution-card .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--color-primary);
            font-weight: 600;
            font-size: 0.9rem;
            margin-top: 14px;
            transition: gap var(--transition-fast);
        }
        .solution-card .card-link:hover {
            gap: 10px;
            color: var(--color-primary-hover);
        }

        .stats-row {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 32px;
            max-width: var(--max-width);
            margin: 0 auto;
            text-align: center;
        }
        .stat-item {
            flex: 0 0 auto;
            min-width: 160px;
        }
        .stat-num {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--color-accent);
            line-height: 1.1;
            letter-spacing: 0.02em;
        }
        .stat-label {
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.8);
            margin-top: 4px;
        }

        .form-float-card {
            background: var(--color-bg-white);
            border-radius: var(--radius-xl);
            padding: 36px 28px;
            box-shadow: var(--shadow-xl);
            max-width: 640px;
            margin: 0 auto;
            position: relative;
            z-index: 5;
            border: 2px solid var(--color-primary);
            text-align: center;
        }
        .form-float-card::before {
            content: '';
            position: absolute;
            inset: -8px;
            border-radius: var(--radius-xl);
            border: 1px dashed var(--color-primary);
            opacity: 0.4;
            z-index: -1;
            pointer-events: none;
        }
        .form-float-card h3 {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--color-secondary);
            margin-bottom: 6px;
        }
        .form-float-card .form-subtitle {
            color: var(--color-text-light);
            font-size: 0.9rem;
            margin-bottom: 20px;
        }
        .form-row {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 14px;
        }
        .form-row .form-group {
            flex: 1;
            min-width: 180px;
            text-align: left;
        }
        .form-group label {
            display: block;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 4px;
        }
        .btn-submit-full {
            width: 100%;
            padding: 14px;
            background: var(--color-primary);
            color: #fff;
            font-size: 1.05rem;
            font-weight: 700;
            border-radius: var(--radius-full);
            letter-spacing: 0.03em;
            transition: all var(--transition-normal);
            box-shadow: 0 4px 16px rgba(255, 107, 53, 0.25);
            margin-top: 6px;
        }
        .btn-submit-full:hover {
            background: var(--color-primary-hover);
            box-shadow: 0 8px 24px rgba(255, 107, 53, 0.38);
            transform: translateY(-2px);
        }

        .privacy-note {
            max-width: 640px;
            margin: 14px auto 0;
            text-align: center;
            font-size: 0.82rem;
            color: var(--color-text-light);
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
        }
        .privacy-note .shield-icon {
            font-size: 1rem;
        }

        .flow-steps {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 20px;
            max-width: var(--max-width);
            margin: 0 auto;
            counter-reset: step;
        }
        .flow-step {
            flex: 0 0 auto;
            width: 200px;
            text-align: center;
            position: relative;
            padding-top: 50px;
        }
        .flow-step::before {
            counter-increment: step;
            content: counter(step);
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--color-primary);
            color: #fff;
            font-weight: 800;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 2;
        }
        .flow-step::after {
            content: '';
            position: absolute;
            top: 22px;
            left: calc(50% + 22px);
            width: 60px;
            height: 2px;
            background: var(--color-border);
            z-index: 1;
        }
        .flow-step:last-child::after {
            display: none;
        }
        .flow-step h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--color-secondary);
            margin-bottom: 4px;
        }
        .flow-step p {
            font-size: 0.85rem;
            color: var(--color-text-light);
            line-height: 1.45;
        }

        .faq-list {
            max-width: 720px;
            margin: 0 auto;
        }
        .faq-item {
            border-bottom: 1px solid var(--color-border-light);
            padding: 18px 0;
            cursor: pointer;
            transition: all var(--transition-fast);
        }
        .faq-item:first-child {
            border-top: 1px solid var(--color-border-light);
        }
        .faq-q {
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--color-secondary);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            transition: color var(--transition-fast);
        }
        .faq-q:hover {
            color: var(--color-primary);
        }
        .faq-q .faq-arrow {
            font-size: 0.8rem;
            transition: transform var(--transition-normal);
            flex-shrink: 0;
            color: var(--color-text-light);
        }
        .faq-item.open .faq-arrow {
            transform: rotate(180deg);
            color: var(--color-primary);
        }
        .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
            font-size: 0.92rem;
            color: var(--color-text-light);
            line-height: 1.6;
        }
        .faq-item.open .faq-a {
            max-height: 300px;
            padding-top: 10px;
        }

        .cta-strip {
            background: linear-gradient(135deg, var(--color-primary) 0%, #e85d2c 100%);
            color: #fff;
            text-align: center;
            padding: 48px 20px;
            border-radius: 0;
        }
        .cta-strip h3 {
            font-size: 1.6rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .cta-strip p {
            font-size: 1rem;
            opacity: 0.9;
            margin-bottom: 20px;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }
        .btn-cta-white {
            background: #fff;
            color: var(--color-primary);
            padding: 13px 32px;
            border-radius: var(--radius-full);
            font-weight: 700;
            font-size: 1rem;
            letter-spacing: 0.02em;
            transition: all var(--transition-normal);
            display: inline-block;
        }
        .btn-cta-white:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 28px rgba(0, 0, 0, 0.22);
            background: #fffefc;
        }

        .site-footer {
            background: var(--color-bg-dark);
            color: var(--color-text-white);
            padding: 40px 20px 20px;
            font-size: 0.9rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 30px;
            max-width: var(--max-width);
            margin: 0 auto;
            padding-bottom: 24px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.12);
        }
        .footer-brand h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: #fff;
        }
        .footer-brand p {
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.6;
            font-size: 0.85rem;
        }
        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }
        .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.7);
            padding: 4px 0;
            font-size: 0.85rem;
            transition: color var(--transition-fast);
        }
        .footer-col a:hover {
            color: var(--color-primary);
        }
        .footer-bottom {
            max-width: var(--max-width);
            margin: 0 auto;
            padding-top: 16px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
            font-size: 0.78rem;
            color: rgba(255, 255, 255, 0.5);
            text-align: center;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.6);
            transition: color var(--transition-fast);
        }
        .footer-bottom a:hover {
            color: var(--color-primary);
        }

        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .hero-fitness h1 {
                font-size: 2.2rem;
            }
            .flow-step {
                width: 160px;
            }
            .flow-step::after {
                width: 30px;
                left: calc(50% + 20px);
            }
            .solution-cards {
                grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            }
        }
        @media (max-width: 768px) {
            .brand-row {
                padding: 8px 14px;
                height: auto;
                min-height: 52px;
            }
            .desktop-only {
                display: none;
            }
            .mobile-menu-toggle {
                display: inline-flex;
            }
            .search-box {
                max-width: 180px;
                height: 34px;
                padding: 0 10px;
                font-size: 0.8rem;
            }
            .logo-link {
                font-size: 1.1rem;
            }
            .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 0.9rem;
            }
            .channel-nav {
                flex-wrap: nowrap;
                overflow-x: auto;
                gap: 2px;
                padding: 4px 0;
            }
            .channel-nav a {
                padding: 8px 13px;
                font-size: 0.8rem;
            }
            .channel-row {
                padding: 0 8px;
            }
            .hero-fitness {
                min-height: 400px;
            }
            .hero-fitness h1 {
                font-size: 1.7rem;
            }
            .hero-fitness .hero-subtitle {
                font-size: 0.95rem;
            }
            .countdown-bar {
                font-size: 0.85rem;
                padding: 8px 16px;
                gap: 4px;
            }
            .countdown-bar .cd-num {
                font-size: 1.2rem;
                min-width: 26px;
            }
            .btn-hero-primary,
            .btn-hero-secondary {
                padding: 11px 22px;
                font-size: 0.9rem;
            }
            .section {
                padding: 36px 14px;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .stats-row {
                gap: 20px;
            }
            .stat-num {
                font-size: 2rem;
            }
            .flow-steps {
                flex-direction: column;
                align-items: center;
                gap: 16px;
            }
            .flow-step {
                width: 100%;
                max-width: 280px;
                padding-top: 0;
                padding-left: 54px;
                text-align: left;
                min-height: 56px;
                display: flex;
                flex-direction: column;
                justify-content: center;
            }
            .flow-step::before {
                left: 0;
                top: 50%;
                transform: translateY(-50%);
            }
            .flow-step::after {
                display: none;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                text-align: center;
            }
            .footer-brand p {
                max-width: 100%;
            }
            .form-float-card {
                padding: 24px 16px;
            }
            .solution-cards {
                grid-template-columns: 1fr;
                max-width: 420px;
                margin: 0 auto;
            }
            .pain-points-grid {
                grid-template-columns: 1fr;
                max-width: 400px;
                margin: 0 auto;
            }
        }
        @media (max-width: 520px) {
            .hero-fitness h1 {
                font-size: 1.4rem;
            }
            .hero-fitness {
                min-height: 340px;
            }
            .hero-btns {
                flex-direction: column;
                align-items: center;
            }
            .btn-hero-primary,
            .btn-hero-secondary {
                width: 100%;
                max-width: 280px;
                text-align: center;
            }
            .countdown-bar {
                flex-wrap: wrap;
                justify-content: center;
                font-size: 0.78rem;
                padding: 8px 12px;
            }
            .form-row {
                flex-direction: column;
            }
            .stats-row {
                gap: 16px;
            }
            .stat-item {
                min-width: 120px;
            }
            .stat-num {
                font-size: 1.6rem;
            }
        }

        .channel-nav.collapsed-mobile {
            display: none;
        }
        @media (max-width: 768px) {
            .channel-nav:not(.collapsed-mobile) {
                display: flex;
            }
            .channel-nav.collapsed-mobile {
                display: none;
            }
        }