/* roulang page: index */
:root {
            --color-primary: #c8463a;
            --color-primary-dark: #a3362c;
            --color-primary-light: #e05a4d;
            --color-secondary: #2d3142;
            --color-accent: #d9a441;
            --color-bg: #faf7f4;
            --color-surface: #ffffff;
            --color-text: #1f1f1f;
            --color-text-soft: #555555;
            --color-text-muted: #888888;
            --color-border: #e8e1da;
            --color-border-dark: #d5cbc1;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --radius-xl: 30px;
            --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 8px 28px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 18px 48px rgba(0, 0, 0, 0.08);
            --shadow-xl: 0 28px 70px rgba(0, 0, 0, 0.12);
            --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-base: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 0.55s cubic-bezier(0.4, 0, 0.2, 1);
        }

        *,
        *::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-sans);
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.75;
            letter-spacing: 0.01em;
            overflow-x: hidden;
        }

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

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

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            outline: none;
            border: none;
        }

        button {
            cursor: pointer;
        }

        ::selection {
            background: var(--color-primary);
            color: #fff;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .container-wide {
            width: 100%;
            max-width: 1360px;
            margin: 0 auto;
            padding: 0 28px;
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 60;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--color-border);
            box-shadow: 0 1px 0 rgba(0, 0, 0, 0.02);
        }

        .header-brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 0;
            gap: 20px;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            font-weight: 700;
            font-size: 1.35rem;
            letter-spacing: -0.02em;
            color: var(--color-text);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            max-width: 100%;
        }

        .brand-logo .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--color-primary), #e8786a);
            color: #fff;
            font-size: 1.15rem;
            flex-shrink: 0;
            box-shadow: 0 4px 14px rgba(200, 70, 58, 0.3);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 22px;
            border-radius: 999px;
            font-weight: 600;
            font-size: 0.95rem;
            letter-spacing: 0.01em;
            transition: all var(--transition-base);
            white-space: nowrap;
            position: relative;
            overflow: hidden;
        }

        .btn:focus-visible {
            outline: 3px solid rgba(200, 70, 58, 0.4);
            outline-offset: 2px;
        }

        .btn-primary {
            background: var(--color-primary);
            color: #fff;
            box-shadow: 0 6px 20px rgba(200, 70, 58, 0.28);
        }
        .btn-primary:hover {
            background: var(--color-primary-dark);
            box-shadow: 0 10px 30px rgba(200, 70, 58, 0.38);
            transform: translateY(-2px);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 4px 14px rgba(200, 70, 58, 0.25);
        }
        .btn-outline {
            background: transparent;
            color: var(--color-text);
            border: 1.5px solid var(--color-border-dark);
        }
        .btn-outline:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
            background: rgba(200, 70, 58, 0.04);
            transform: translateY(-2px);
        }
        .btn-outline:active {
            transform: translateY(0);
        }
        .btn-ghost {
            background: rgba(200, 70, 58, 0.06);
            color: var(--color-primary);
        }
        .btn-ghost:hover {
            background: rgba(200, 70, 58, 0.12);
        }
        .btn-lg {
            padding: 14px 32px;
            font-size: 1.05rem;
            border-radius: 999px;
        }
        .btn-sm {
            padding: 7px 16px;
            font-size: 0.85rem;
            border-radius: 999px;
        }

        .header-search {
            display: flex;
            align-items: center;
            gap: 8px;
            background: #f5f1ec;
            border-radius: 999px;
            padding: 6px 6px 6px 18px;
            border: 1.5px solid transparent;
            transition: border-color var(--transition-fast), background var(--transition-fast);
            flex: 1;
            max-width: 360px;
        }
        .header-search:focus-within {
            border-color: var(--color-primary);
            background: #fff;
        }
        .header-search input {
            background: transparent;
            border: none;
            outline: none;
            font-size: 0.9rem;
            color: var(--color-text);
            flex: 1;
            min-width: 0;
        }
        .header-search input::placeholder {
            color: var(--color-text-muted);
        }
        .header-search .search-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            border-radius: 999px;
            background: var(--color-primary);
            color: #fff;
            font-size: 0.85rem;
            transition: background var(--transition-fast);
            flex-shrink: 0;
            border: none;
        }
        .header-search .search-btn:hover {
            background: var(--color-primary-dark);
        }

        .header-channel-row {
            border-top: 1px solid var(--color-border);
            padding: 10px 0;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: thin;
            scrollbar-color: var(--color-border-dark) transparent;
        }
        .header-channel-row::-webkit-scrollbar {
            height: 4px;
        }
        .header-channel-row::-webkit-scrollbar-thumb {
            background: var(--color-border-dark);
            border-radius: 999px;
        }
        .channel-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            min-width: max-content;
        }
        .channel-link {
            padding: 7px 16px;
            border-radius: 999px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--color-text-soft);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .channel-link:hover {
            color: var(--color-primary);
            background: rgba(200, 70, 58, 0.06);
        }
        .channel-link.active {
            background: var(--color-primary);
            color: #fff;
            font-weight: 600;
            box-shadow: 0 3px 12px rgba(200, 70, 58, 0.25);
        }

        /* Mobile nav toggle */
        .mobile-nav-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            border: 1px solid var(--color-border);
            background: #fff;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: border-color var(--transition-fast);
        }
        .mobile-nav-toggle:hover {
            border-color: var(--color-primary);
        }
        .mobile-nav-toggle i {
            font-size: 1.15rem;
            color: var(--color-text);
        }

        /* Hero */
        .hero-section {
            position: relative;
            min-height: 640px;
            display: flex;
            align-items: center;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center center;
            background-repeat: no-repeat;
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(100deg, rgba(20, 18, 16, 0.78) 0%, rgba(20, 18, 16, 0.5) 45%, rgba(20, 18, 16, 0.25) 100%);
            z-index: 1;
        }
        .hero-section::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 120px;
            background: linear-gradient(to top, var(--color-bg) 10%, transparent 100%);
            z-index: 2;
        }
        .hero-inner {
            position: relative;
            z-index: 3;
            padding: 80px 0 140px;
            color: #fff;
        }
        .hero-content {
            max-width: 720px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.16);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.25);
            padding: 8px 18px;
            border-radius: 999px;
            font-size: 0.88rem;
            font-weight: 500;
            color: #fff;
            margin-bottom: 28px;
            letter-spacing: 0.02em;
        }
        .hero-badge i {
            color: #f5c2b8;
            font-size: 0.8rem;
        }
        .hero-title {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -0.025em;
            margin-bottom: 24px;
            color: #fff;
        }
        .hero-desc {
            font-size: 1.05rem;
            line-height: 1.85;
            color: rgba(255, 255, 255, 0.88);
            margin-bottom: 36px;
            max-width: 620px;
            letter-spacing: 0.01em;
        }
        .hero-cta-group {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 40px;
        }
        .hero-stats {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 32px;
            padding-top: 28px;
            border-top: 1px solid rgba(255, 255, 255, 0.2);
        }
        .hero-stat {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }
        .hero-stat-number {
            font-size: 1.6rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: -0.01em;
        }
        .hero-stat-label {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.7);
        }

        /* Section general */
        .section {
            padding: 72px 0;
        }
        .section-alt {
            background: #f5f0ea;
        }
        .section-header {
            margin-bottom: 44px;
        }
        .section-title {
            font-size: 1.9rem;
            font-weight: 750;
            letter-spacing: -0.02em;
            color: var(--color-text);
            margin-bottom: 12px;
            line-height: 1.3;
        }
        .section-subtitle {
            font-size: 1rem;
            color: var(--color-text-soft);
            max-width: 620px;
            line-height: 1.8;
        }
        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(200, 70, 58, 0.08);
            color: var(--color-primary);
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.05em;
            padding: 5px 14px;
            border-radius: 999px;
            margin-bottom: 16px;
            text-transform: uppercase;
        }

        /* Stats board */
        .stats-board {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: -40px;
            position: relative;
            z-index: 5;
        }
        .stat-card {
            background: var(--color-surface);
            border-radius: var(--radius-md);
            padding: 24px 22px;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--color-border);
            text-align: center;
            transition: all var(--transition-base);
        }
        .stat-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
        .stat-card-number {
            font-size: 2rem;
            font-weight: 750;
            color: var(--color-primary);
            letter-spacing: -0.02em;
            line-height: 1.2;
        }
        .stat-card-label {
            font-size: 0.88rem;
            color: var(--color-text-soft);
            margin-top: 6px;
        }

        /* Play method */
        .method-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .method-card {
            background: var(--color-surface);
            border-radius: var(--radius-md);
            padding: 32px 28px;
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
            position: relative;
        }
        .method-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: var(--color-border-dark);
        }
        .method-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: 14px;
            background: #f5f0ea;
            color: var(--color-primary);
            font-weight: 700;
            font-size: 1.2rem;
            margin-bottom: 18px;
        }
        .method-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--color-text);
        }
        .method-card p {
            font-size: 0.92rem;
            color: var(--color-text-soft);
            line-height: 1.75;
            margin-bottom: 0;
        }

        /* Hot list */
        .hot-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 22px;
        }
        .hot-card {
            background: var(--color-surface);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
        }
        .hot-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .hot-card-img {
            aspect-ratio: 16/9;
            overflow: hidden;
            position: relative;
        }
        .hot-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .hot-card:hover .hot-card-img img {
            transform: scale(1.05);
        }
        .hot-card-badge {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(200, 70, 58, 0.9);
            color: #fff;
            font-size: 0.78rem;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
            letter-spacing: 0.03em;
        }
        .hot-card-body {
            padding: 20px 22px;
        }
        .hot-card-title {
            font-size: 1.08rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .hot-card-desc {
            font-size: 0.88rem;
            color: var(--color-text-soft);
            line-height: 1.7;
            margin-bottom: 14px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .hot-card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: 0.82rem;
            color: var(--color-text-muted);
            padding-top: 12px;
            border-top: 1px solid var(--color-border);
        }
        .hot-card-meta span {
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        /* Service matrix */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 18px;
        }
        .service-item {
            background: var(--color-surface);
            border-radius: var(--radius-md);
            padding: 26px 22px;
            border: 1px solid var(--color-border);
            text-align: center;
            transition: all var(--transition-base);
            cursor: pointer;
        }
        .service-item:hover {
            border-color: var(--color-primary);
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .service-item-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 52px;
            height: 52px;
            border-radius: 16px;
            background: rgba(200, 70, 58, 0.08);
            color: var(--color-primary);
            font-size: 1.35rem;
            margin-bottom: 14px;
        }
        .service-item h4 {
            font-size: 1rem;
            font-weight: 650;
            color: var(--color-text);
            margin-bottom: 6px;
        }
        .service-item p {
            font-size: 0.84rem;
            color: var(--color-text-soft);
            line-height: 1.6;
        }

        /* Comparison */
        .compare-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }
        .compare-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: 34px 30px;
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
        }
        .compare-card.highlight {
            background: #fffaf8;
            border-color: var(--color-primary);
            box-shadow: var(--shadow-md);
        }
        .compare-card h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 16px;
        }
        .compare-card .compare-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .compare-card .compare-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 0.92rem;
            color: var(--color-text-soft);
            line-height: 1.65;
        }
        .compare-card .compare-list li i {
            color: var(--color-primary);
            font-size: 0.95rem;
            margin-top: 4px;
            flex-shrink: 0;
        }
        .compare-card .compare-list li i.fa-xmark {
            color: var(--color-text-muted);
        }

        /* News section */
        .news-layout {
            display: grid;
            grid-template-columns: 1.6fr 1fr;
            gap: 32px;
        }
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 0;
            background: var(--color-surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }
        .news-item {
            padding: 20px 24px;
            border-bottom: 1px solid var(--color-border);
            transition: background var(--transition-fast);
            display: flex;
            align-items: flex-start;
            gap: 16px;
        }
        .news-item:last-child {
            border-bottom: none;
        }
        .news-item:hover {
            background: rgba(200, 70, 58, 0.04);
        }
        .news-item-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--color-primary);
            margin-top: 8px;
            flex-shrink: 0;
        }
        .news-item-content h4 {
            font-size: 1.02rem;
            font-weight: 650;
            color: var(--color-text);
            margin-bottom: 4px;
            line-height: 1.45;
        }
        .news-item-content p {
            font-size: 0.87rem;
            color: var(--color-text-soft);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-item-content .news-meta {
            font-size: 0.78rem;
            color: var(--color-text-muted);
            margin-top: 6px;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .news-side {
            display: flex;
            flex-direction: column;
            gap: 18px;
        }
        .news-recommend {
            background: var(--color-surface);
            border-radius: var(--radius-md);
            padding: 22px;
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
        }
        .news-recommend h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 14px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .news-recommend h4 i {
            color: var(--color-primary);
        }
        .recommend-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .recommend-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 10px 12px;
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
        }
        .recommend-item:hover {
            background: rgba(200, 70, 58, 0.05);
        }
        .recommend-item-img {
            width: 56px;
            height: 56px;
            border-radius: 10px;
            object-fit: cover;
            flex-shrink: 0;
        }
        .recommend-item-info h5 {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 2px;
            line-height: 1.3;
        }
        .recommend-item-info span {
            font-size: 0.78rem;
            color: var(--color-text-muted);
        }

        /* Reviews */
        .review-summary {
            display: flex;
            align-items: center;
            gap: 24px;
            padding: 24px 28px;
            background: var(--color-surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            margin-bottom: 28px;
            flex-wrap: wrap;
            box-shadow: var(--shadow-sm);
        }
        .review-summary-score {
            font-size: 3rem;
            font-weight: 800;
            color: var(--color-primary);
            letter-spacing: -0.03em;
            line-height: 1;
        }
        .review-summary-stars {
            display: flex;
            gap: 3px;
            color: #f5a623;
            font-size: 1.05rem;
        }
        .review-summary-text {
            font-size: 0.92rem;
            color: var(--color-text-soft);
        }
        .review-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .review-card {
            background: var(--color-surface);
            border-radius: var(--radius-md);
            padding: 22px;
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
        }
        .review-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .review-card .review-stars {
            display: flex;
            gap: 3px;
            color: #f5a623;
            font-size: 0.85rem;
            margin-bottom: 10px;
        }
        .review-card .review-text {
            font-size: 0.9rem;
            color: var(--color-text-soft);
            line-height: 1.7;
            margin-bottom: 12px;
        }
        .review-card .review-author {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.82rem;
            color: var(--color-text-muted);
        }
        .review-card .review-author .avatar {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: #efe8e0;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 0.75rem;
            color: var(--color-text-soft);
            flex-shrink: 0;
        }

        /* Contributors */
        .contrib-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 16px;
        }
        .contrib-card {
            background: var(--color-surface);
            border-radius: var(--radius-md);
            padding: 20px 16px;
            text-align: center;
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
        }
        .contrib-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
            border-color: var(--color-border-dark);
        }
        .contrib-card .avatar {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, #e8ddd2, #d5c5b5);
            margin: 0 auto 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--color-text-soft);
            font-weight: 600;
        }
        .contrib-card h5 {
            font-size: 0.9rem;
            font-weight: 650;
            color: var(--color-text);
            margin-bottom: 2px;
        }
        .contrib-card span {
            font-size: 0.78rem;
            color: var(--color-text-muted);
        }

        /* FAQ */
        .faq-container {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .faq-item {
            background: var(--color-surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition-base);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-md);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 24px;
            background: transparent;
            border: none;
            font-size: 1rem;
            font-weight: 650;
            color: var(--color-text);
            text-align: left;
            cursor: pointer;
            transition: color var(--transition-fast);
        }
        .faq-question:hover {
            color: var(--color-primary);
        }
        .faq-question i {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            transition: transform var(--transition-base);
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--color-primary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
        }
        .faq-answer-inner {
            padding: 0 24px 22px;
            font-size: 0.92rem;
            color: var(--color-text-soft);
            line-height: 1.8;
        }

        /* CTA / Form */
        .cta-section {
            background: linear-gradient(135deg, #2d2a26 0%, #4a3f36 55%, #5c4a3c 100%);
            color: #fff;
            padding: 72px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 500px;
            height: 500px;
            background: rgba(200, 70, 58, 0.18);
            border-radius: 50%;
            z-index: 1;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -40%;
            left: -15%;
            width: 400px;
            height: 400px;
            background: rgba(217, 164, 65, 0.1);
            border-radius: 50%;
            z-index: 1;
        }
        .cta-inner {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1.1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .cta-info h2 {
            font-size: 1.8rem;
            font-weight: 750;
            letter-spacing: -0.02em;
            margin-bottom: 16px;
            color: #fff;
            line-height: 1.3;
        }
        .cta-info p {
            font-size: 0.98rem;
            color: rgba(255, 255, 255, 0.8);
            line-height: 1.8;
            margin-bottom: 22px;
        }
        .cta-feature-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .cta-feature-list li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.85);
        }
        .cta-feature-list li i {
            color: var(--color-accent);
        }
        .cta-form-box {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            box-shadow: var(--shadow-xl);
            color: var(--color-text);
        }
        .cta-form-box h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 8px;
        }
        .cta-form-box .form-hint {
            font-size: 0.86rem;
            color: var(--color-text-muted);
            margin-bottom: 20px;
        }
        .form-group {
            margin-bottom: 16px;
        }
        .form-group label {
            display: block;
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 6px;
        }
        .form-group input,
        .form-group select,
        .form-group textarea {
            width: 100%;
            padding: 11px 16px;
            border: 1.5px solid var(--color-border);
            border-radius: var(--radius-sm);
            font-size: 0.94rem;
            color: var(--color-text);
            background: #fdfcfb;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
        }
        .form-group input:focus,
        .form-group select:focus,
        .form-group textarea:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(200, 70, 58, 0.12);
            outline: none;
        }
        .form-group textarea {
            min-height: 90px;
            resize: vertical;
        }
        .form-submit-btn {
            width: 100%;
            padding: 13px 20px;
            background: var(--color-primary);
            color: #fff;
            border: none;
            border-radius: var(--radius-sm);
            font-size: 1rem;
            font-weight: 650;
            cursor: pointer;
            transition: all var(--transition-base);
            letter-spacing: 0.01em;
        }
        .form-submit-btn:hover {
            background: var(--color-primary-dark);
            box-shadow: 0 8px 24px rgba(200, 70, 58, 0.35);
        }
        .form-submit-btn:active {
            transform: scale(0.98);
        }
        .form-status {
            margin-top: 12px;
            font-size: 0.88rem;
            color: var(--color-primary);
            text-align: center;
            display: none;
        }
        .form-status.show {
            display: block;
        }

        /* Footer */
        .site-footer {
            background: #1f1d1a;
            color: rgba(255, 255, 255, 0.7);
            padding: 48px 0 28px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }
        .footer-brand {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: -0.01em;
            line-height: 1.4;
            word-break: break-all;
        }
        .footer-desc {
            font-size: 0.88rem;
            line-height: 1.75;
            color: rgba(255, 255, 255, 0.55);
            max-width: 380px;
        }
        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 650;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-col ul li a {
            font-size: 0.86rem;
            color: rgba(255, 255, 255, 0.6);
            transition: color var(--transition-fast);
        }
        .footer-col ul li a:hover {
            color: #fff;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 22px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 14px;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.45);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.45);
            transition: color var(--transition-fast);
        }
        .footer-bottom a:hover {
            color: #fff;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-title {
                font-size: 2.2rem;
            }
            .stats-board {
                grid-template-columns: repeat(2, 1fr);
            }
            .method-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .hot-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .service-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .review-list {
                grid-template-columns: repeat(2, 1fr);
            }
            .contrib-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .cta-inner {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            .header-brand-row {
                flex-wrap: wrap;
                padding: 12px 0;
            }
            .header-search {
                order: 3;
                max-width: 100%;
                flex: 1 1 100%;
                margin-top: 8px;
            }
            .mobile-nav-toggle {
                display: inline-flex;
            }
            .hero-section {
                min-height: 520px;
            }
            .hero-inner {
                padding: 60px 0 110px;
            }
            .hero-title {
                font-size: 1.75rem;
            }
            .hero-desc {
                font-size: 0.95rem;
            }
            .hero-stats {
                gap: 20px;
            }
            .hero-stat-number {
                font-size: 1.3rem;
            }
            .section {
                padding: 48px 0;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .stats-board {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
                margin-top: -24px;
            }
            .stat-card {
                padding: 18px 14px;
            }
            .stat-card-number {
                font-size: 1.5rem;
            }
            .method-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .hot-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .service-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .service-item {
                padding: 18px 14px;
            }
            .compare-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .news-layout {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .review-summary {
                padding: 18px 20px;
                gap: 14px;
            }
            .review-summary-score {
                font-size: 2.2rem;
            }
            .review-list {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .contrib-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .faq-question {
                padding: 16px 18px;
                font-size: 0.92rem;
            }
            .faq-answer-inner {
                padding: 0 18px 18px;
                font-size: 0.88rem;
            }
            .cta-section {
                padding: 48px 0;
            }
            .cta-form-box {
                padding: 24px 18px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .container-wide {
                padding: 0 16px;
            }
            .brand-logo {
                font-size: 1.05rem;
                gap: 8px;
            }
            .brand-logo .logo-mark {
                width: 34px;
                height: 34px;
                font-size: 0.95rem;
                border-radius: 10px;
            }
            .hero-title {
                font-size: 1.45rem;
            }
            .hero-desc {
                font-size: 0.88rem;
                line-height: 1.7;
            }
            .hero-cta-group {
                gap: 10px;
            }
            .btn-lg {
                padding: 11px 22px;
                font-size: 0.92rem;
            }
            .stats-board {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .stat-card {
                padding: 14px 10px;
            }
            .stat-card-number {
                font-size: 1.25rem;
            }
            .stat-card-label {
                font-size: 0.78rem;
            }
            .section-title {
                font-size: 1.3rem;
            }
            .service-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .service-item {
                padding: 14px 10px;
            }
            .service-item-icon {
                width: 40px;
                height: 40px;
                font-size: 1.05rem;
                border-radius: 12px;
            }
            .cta-info h2 {
                font-size: 1.4rem;
            }
            .channel-link {
                padding: 5px 12px;
                font-size: 0.82rem;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
        }

@media (max-width: 768px) {
            .header-channel-row {
                display: none;
            }
            .header-channel-row.show-mobile {
                display: block;
            }
            .channel-nav {
                flex-wrap: wrap;
                gap: 4px;
                padding-bottom: 6px;
            }
        }