/* roulang page: index */
:root {
            --primary: #2F6D9E;
            --primary-dark: #1E4D73;
            --primary-light: #E5F0F9;
            --secondary: #FF7F50;
            --secondary-dark: #E5653A;
            --bg-light: #F9FAFB;
            --bg-card: #FFFFFF;
            --text-dark: #1F2937;
            --text-muted: #6B7280;
            --border-color: #E2E8F0;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06), 0 4px 16px rgba(0,0,0,0.04);
            --shadow-hover: 0 4px 12px rgba(0,0,0,0.1), 0 8px 24px rgba(0,0,0,0.06);
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-badge: 20px;
            --font-sans: 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --font-serif: 'Noto Serif SC', Georgia, serif;
            --max-width: 1200px;
            --nav-height: 60px;
            --section-spacing: 80px;
        }
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font-sans);
            background: var(--bg-light);
            color: var(--text-dark);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }
        a { color: var(--primary); text-decoration: none; transition: color 0.2s; }
        a:hover { color: var(--primary-dark); }
        a:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-card); }
        .container { max-width: var(--max-width); margin: 0 auto; padding: 0 20px; }
        .row { display: flex; flex-wrap: wrap; margin: 0 -12px; }
        .columns { padding: 0 12px; flex: 1; }

        /* ===== Header & Navigation ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--bg-card);
            box-shadow: 0 1px 4px rgba(0,0,0,0.05);
        }
        .header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 10px 20px;
            max-width: var(--max-width);
            margin: 0 auto;
            height: var(--nav-height);
        }
        .logo-area {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--primary);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            font-weight: 700;
        }
        .logo-text {
            font-family: var(--font-sans);
            font-weight: 700;
            font-size: 20px;
            color: var(--text-dark);
            letter-spacing: -0.01em;
        }
        .logo-slogan {
            font-size: 13px;
            color: var(--text-muted);
            font-weight: 400;
            display: none;
        }
        @media (min-width: 640px) {
            .logo-slogan { display: inline-block; margin-left: 8px; }
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .search-box {
            display: none;
            align-items: center;
            background: var(--bg-light);
            border-radius: var(--radius-btn);
            padding: 6px 14px;
            gap: 8px;
            border: 1px solid var(--border-color);
            transition: border-color 0.2s;
        }
        .search-box:focus-within { border-color: var(--primary); }
        .search-box input {
            border: none;
            background: transparent;
            outline: none;
            font-size: 14px;
            color: var(--text-dark);
            min-width: 140px;
            font-family: var(--font-sans);
        }
        .search-box input::placeholder { color: var(--text-muted); }
        .search-box i { color: var(--text-muted); font-size: 14px; }
        @media (min-width: 768px) {
            .search-box { display: flex; }
        }
        .hamburger {
            display: flex;
            flex-direction: column;
            cursor: pointer;
            gap: 4px;
            padding: 4px;
            background: none;
            border: none;
        }
        .hamburger span {
            width: 22px;
            height: 2px;
            background: var(--text-dark);
            border-radius: 2px;
            transition: 0.3s;
        }
        @media (min-width: 768px) {
            .hamburger { display: none; }
        }

        /* Second Row: Channel Tabs */
        .nav-tabs-wrap {
            background: var(--bg-card);
            border-top: 1px solid var(--border-color);
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }
        .nav-tabs-wrap::-webkit-scrollbar { display: none; }
        .nav-tabs {
            display: flex;
            gap: 4px;
            padding: 6px 20px;
            max-width: var(--max-width);
            margin: 0 auto;
            white-space: nowrap;
        }
        .nav-tab {
            display: inline-flex;
            align-items: center;
            padding: 8px 20px;
            border-radius: var(--radius-badge);
            font-size: 15px;
            font-weight: 500;
            color: var(--text-dark);
            background: transparent;
            transition: all 0.2s;
            cursor: pointer;
            border: none;
            font-family: var(--font-sans);
        }
        .nav-tab:hover { background: var(--primary-light); color: var(--primary); }
        .nav-tab.active {
            background: var(--primary);
            color: #fff;
        }
        .nav-tab.active:hover { background: var(--primary-dark); }

        /* ===== Hero Section ===== */
        .hero-section {
            position: relative;
            min-height: 70vh;
            display: flex;
            align-items: center;
            background: linear-gradient(135deg, var(--primary-light) 0%, #fff 100%);
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.12;
            z-index: 0;
        }
        .hero-inner {
            position: relative;
            z-index: 1;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 60px 20px;
            gap: 40px;
        }
        .hero-visual {
            flex: 1 1 55%;
            min-width: 280px;
            position: relative;
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-hover);
            aspect-ratio: 3 / 4;
            max-height: 70vh;
        }
        .hero-visual img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
        }
        .hero-play-btn {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 72px;
            height: 72px;
            background: rgba(255,255,255,0.92);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 28px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.15);
            transition: transform 0.3s, box-shadow 0.3s;
            cursor: pointer;
        }
        .hero-play-btn:hover { transform: translate(-50%, -50%) scale(1.06); box-shadow: 0 6px 30px rgba(0,0,0,0.2); }
        .hero-text {
            flex: 1 1 38%;
            min-width: 260px;
        }
        .hero-text h1 {
            font-family: var(--font-sans);
            font-size: 38px;
            font-weight: 900;
            line-height: 1.2;
            letter-spacing: -0.02em;
            color: var(--text-dark);
            margin-bottom: 16px;
        }
        .hero-text h1 .highlight { color: var(--primary); }
        .hero-subtitle {
            font-family: var(--font-sans);
            font-size: 20px;
            font-weight: 400;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 28px;
        }
        .hero-cta {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 36px;
            background: var(--secondary);
            color: #fff;
            border-radius: var(--radius-btn);
            font-size: 18px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: background 0.3s, transform 0.2s;
            font-family: var(--font-sans);
        }
        .hero-cta:hover { background: var(--secondary-dark); color: #fff; transform: translateY(-2px); }
        .hero-cta i { font-size: 16px; }
        @media (max-width: 768px) {
            .hero-inner { flex-direction: column; padding: 40px 20px; gap: 24px; }
            .hero-visual { flex: 1 1 100%; max-height: 50vh; }
            .hero-text h1 { font-size: 28px; }
            .hero-subtitle { font-size: 17px; }
            .hero-cta { width: 100%; justify-content: center; }
        }

        /* ===== Section Common ===== */
        .section-block {
            padding: var(--section-spacing) 0;
        }
        .section-block-alt { background: var(--bg-card); }
        .section-title {
            font-family: var(--font-sans);
            font-size: 30px;
            font-weight: 700;
            text-align: center;
            margin-bottom: 12px;
            letter-spacing: 0.01em;
            color: var(--text-dark);
        }
        .section-subtitle {
            font-family: var(--font-sans);
            font-size: 16px;
            color: var(--text-muted);
            text-align: center;
            max-width: 600px;
            margin: 0 auto 48px;
            line-height: 1.6;
        }
        @media (max-width: 768px) {
            .section-block { padding: 50px 0; }
            .section-title { font-size: 24px; }
            .section-subtitle { margin-bottom: 32px; }
        }

        /* ===== Trending Cards (爆款片段卡) ===== */
        .trending-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 28px;
            justify-content: center;
        }
        .trending-card {
            flex: 1 1 280px;
            max-width: 340px;
            background: var(--bg-card);
            border-radius: var(--radius-card);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            transition: transform 0.3s, box-shadow 0.3s;
            transform: rotate(-0.5deg);
            position: relative;
            border: 1px solid var(--border-color);
        }
        .trending-card:nth-child(2) { transform: rotate(0.8deg); margin-top: 12px; }
        .trending-card:nth-child(3) { transform: rotate(-0.3deg); margin-top: -8px; }
        .trending-card:hover { transform: rotate(0deg) translateY(-6px); box-shadow: var(--shadow-hover); }
        .trending-card .card-img {
            width: 100%;
            aspect-ratio: 1 / 1;
            border-radius: var(--radius-card);
            overflow: hidden;
            margin-bottom: 16px;
            box-shadow: 0 2px 8px rgba(0,0,0,0.06);
        }
        .trending-card .card-img img { width: 100%; height: 100%; object-fit: cover; }
        .trending-card .card-badge {
            display: inline-block;
            padding: 2px 12px;
            border-radius: var(--radius-badge);
            font-size: 12px;
            font-weight: 500;
            background: var(--secondary);
            color: #fff;
            margin-bottom: 8px;
        }
        .trending-card h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 6px;
            font-family: var(--font-sans);
        }
        .trending-card p {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 12px;
            line-height: 1.5;
        }
        .trending-card .card-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .trending-card .card-link i { font-size: 12px; transition: transform 0.2s; }
        .trending-card .card-link:hover i { transform: translateX(4px); }
        @media (max-width: 768px) {
            .trending-card { flex: 1 1 100%; max-width: 100%; transform: rotate(0deg) !important; margin-top: 0 !important; }
        }

        /* =====种草清单 ===== */
        .种草-section {
            background: #F0F6FB;
            padding: var(--section-spacing) 0;
        }
        .种草-list {
            display: flex;
            flex-direction: column;
            gap: 0;
            max-width: 800px;
            margin: 0 auto;
            background: var(--bg-card);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
        }
        .种草-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 20px 24px;
            border-bottom: 1px solid var(--border-color);
            transition: background 0.2s;
            flex-wrap: wrap;
        }
        .种草-item:last-child { border-bottom: none; }
        .种草-item:hover { background: var(--primary-light); }
        .种草-icon {
            width: 44px;
            height: 44px;
            background: var(--primary-light);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            flex-shrink: 0;
        }
        .种草-info {
            flex: 1;
            min-width: 160px;
        }
        .种草-info h3 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 2px;
            font-family: var(--font-sans);
        }
        .种草-info .summary {
            font-size: 13px;
            color: var(--text-muted);
        }
        .种草-rating {
            display: flex;
            align-items: center;
            gap: 4px;
            font-size: 13px;
            color: #F59E0B;
        }
        .种草-rating span { color: var(--text-muted); margin-left: 2px; }
        .种草-price {
            text-align: right;
            flex-shrink: 0;
        }
        .种草-price .current {
            font-size: 20px;
            font-weight: 700;
            color: var(--secondary);
        }
        .种草-price .original {
            font-size: 14px;
            color: var(--text-muted);
            text-decoration: line-through;
            margin-left: 6px;
        }
        .种草-buy {
            padding: 6px 18px;
            background: var(--secondary);
            color: #fff;
            border-radius: var(--radius-btn);
            font-size: 14px;
            font-weight: 500;
            border: none;
            cursor: pointer;
            transition: background 0.2s;
            font-family: var(--font-sans);
        }
        .种草-buy:hover { background: var(--secondary-dark); }
        @media (max-width: 768px) {
            .种草-item { padding: 16px; }
            .种草-price .current { font-size: 17px; }
            .种草-buy { padding: 6px 14px; font-size: 13px; }
        }

        /* ===== Reviews ===== */
        .reviews-scroll {
            display: flex;
            gap: 20px;
            overflow-x: auto;
            padding: 8px 4px 20px;
            scrollbar-width: none;
            -webkit-overflow-scrolling: touch;
        }
        .reviews-scroll::-webkit-scrollbar { display: none; }
        .review-card {
            flex: 0 0 260px;
            background: var(--bg-card);
            border-radius: var(--radius-card);
            padding: 20px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: box-shadow 0.2s;
        }
        .review-card:hover { box-shadow: var(--shadow-hover); }
        .review-header {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 12px;
        }
        .review-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--primary);
            font-weight: 600;
            flex-shrink: 0;
        }
        .review-name {
            font-size: 14px;
            font-weight: 600;
        }
        .review-stars {
            color: #F59E0B;
            font-size: 13px;
            margin-left: auto;
        }
        .review-text {
            font-size: 14px;
            color: var(--text-dark);
            line-height: 1.5;
            margin-bottom: 8px;
        }
        .review-like {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 13px;
            color: var(--text-muted);
            cursor: pointer;
            transition: color 0.2s;
        }
        .review-like:hover { color: var(--secondary); }
        .review-like i { font-size: 14px; }
        .review-like.liked i { font-weight: 900; color: var(--secondary); }

        /* ===== Stats / 平台优势 ===== */
        .stats-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            justify-content: center;
        }
        .stat-card {
            flex: 1 1 180px;
            max-width: 220px;
            text-align: center;
            padding: 32px 16px;
            background: var(--bg-card);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: transform 0.3s, box-shadow 0.3s;
        }
        .stat-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
        .stat-number {
            font-size: 36px;
            font-weight: 900;
            color: var(--primary);
            line-height: 1.2;
        }
        .stat-number .suffix { font-size: 20px; font-weight: 600; }
        .stat-label {
            font-size: 15px;
            color: var(--text-muted);
            margin-top: 6px;
        }
        @media (max-width: 640px) {
            .stat-card { flex: 1 1 45%; max-width: 100%; }
        }

        /* ===== CTA Section ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, #1E4D73 100%);
            padding: 80px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
            opacity: 0.06;
        }
        .cta-inner {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 700px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .cta-title {
            font-size: 34px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            font-family: var(--font-sans);
            letter-spacing: -0.01em;
        }
        .cta-desc {
            font-size: 17px;
            color: rgba(255,255,255,0.85);
            margin-bottom: 32px;
            line-height: 1.6;
        }
        .cta-form {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
            max-width: 500px;
            margin: 0 auto;
        }
        .cta-form input {
            flex: 1 1 200px;
            padding: 14px 20px;
            border-radius: var(--radius-btn);
            border: 2px solid rgba(255,255,255,0.3);
            background: rgba(255,255,255,0.12);
            color: #fff;
            font-size: 16px;
            outline: none;
            transition: border-color 0.3s;
            font-family: var(--font-sans);
        }
        .cta-form input::placeholder { color: rgba(255,255,255,0.6); }
        .cta-form input:focus { border-color: rgba(255,255,255,0.7); }
        .cta-form button {
            padding: 14px 36px;
            background: #fff;
            color: var(--primary);
            border: none;
            border-radius: var(--radius-btn);
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.3s, transform 0.2s;
            font-family: var(--font-sans);
        }
        .cta-form button:hover { background: var(--primary-light); transform: translateY(-2px); }
        @media (max-width: 640px) {
            .cta-title { font-size: 26px; }
            .cta-form input { flex: 1 1 100%; }
            .cta-form button { flex: 1 1 100%; }
        }

        /* ===== Latest Posts ===== */
        .posts-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .post-card {
            background: var(--bg-card);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: transform 0.3s, box-shadow 0.3s;
            display: flex;
            flex-direction: column;
        }
        .post-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
        .post-thumb {
            width: 100%;
            aspect-ratio: 4 / 3;
            overflow: hidden;
        }
        .post-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s;
        }
        .post-card:hover .post-thumb img { transform: scale(1.04); }
        .post-body {
            padding: 18px 20px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .post-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 8px;
            flex-wrap: wrap;
        }
        .post-meta .cat-link {
            padding: 2px 10px;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: var(--radius-badge);
            font-size: 12px;
            font-weight: 500;
        }
        .post-body h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 6px;
            font-family: var(--font-sans);
            line-height: 1.4;
        }
        .post-body h3 a { color: var(--text-dark); }
        .post-body h3 a:hover { color: var(--primary); }
        .post-excerpt {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .empty-posts {
            grid-column: 1 / -1;
            text-align: center;
            padding: 40px 20px;
            color: var(--text-muted);
            font-size: 16px;
            background: var(--bg-card);
            border-radius: var(--radius-card);
            border: 1px dashed var(--border-color);
        }
        @media (max-width: 768px) {
            .posts-grid { grid-template-columns: 1fr; }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-card);
            padding: 20px 24px;
            margin-bottom: 12px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: box-shadow 0.2s;
        }
        .faq-item:hover { box-shadow: var(--shadow-hover); }
        .faq-q {
            font-size: 17px;
            font-weight: 600;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-family: var(--font-sans);
        }
        .faq-q i { color: var(--primary); font-size: 14px; transition: transform 0.3s; }
        .faq-item.open .faq-q i { transform: rotate(180deg); }
        .faq-a {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-top: 12px;
            display: none;
            border-top: 1px solid var(--border-color);
            padding-top: 14px;
        }
        .faq-item.open .faq-a { display: block; }

        /* ===== Footer ===== */
        .site-footer {
            background: #1E293B;
            color: #CBD5E1;
            padding: 50px 0 30px;
        }
        .footer-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        .footer-row1 {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 24px;
            margin-bottom: 32px;
        }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .footer-brand .logo-icon {
            width: 32px;
            height: 32px;
            font-size: 16px;
        }
        .footer-brand .logo-text {
            color: #fff;
            font-size: 18px;
        }
        .footer-social {
            display: flex;
            gap: 16px;
        }
        .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255,255,255,0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #CBD5E1;
            font-size: 18px;
            transition: background 0.2s, color 0.2s;
        }
        .footer-social a:hover { background: var(--primary); color: #fff; }
        .footer-row2 {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            padding-top: 24px;
            border-top: 1px solid rgba(255,255,255,0.06);
            font-size: 14px;
        }
        .footer-nav {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
        }
        .footer-nav a { color: #9CA3AF; font-size: 14px; transition: color 0.2s; }
        .footer-nav a:hover { color: #fff; }
        .footer-copy { color: #6B7280; font-size: 13px; }
        .footer-copy a { color: #9CA3AF; }
        .footer-copy a:hover { color: #fff; }
        @media (max-width: 640px) {
            .footer-row1 { flex-direction: column; align-items: flex-start; }
            .footer-row2 { flex-direction: column; align-items: flex-start; }
        }

        /* ===== Mobile Menu ===== */
        .mobile-menu {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0,0,0,0.5);
            z-index: 2000;
            opacity: 0;
            transition: opacity 0.3s;
        }
        .mobile-menu.open { display: block; opacity: 1; }
        .mobile-drawer {
            position: absolute;
            top: 0;
            right: 0;
            width: 280px;
            height: 100%;
            background: var(--bg-card);
            padding: 24px;
            box-shadow: -4px 0 20px rgba(0,0,0,0.1);
            transform: translateX(100%);
            transition: transform 0.3s;
        }
        .mobile-menu.open .mobile-drawer { transform: translateX(0); }
        .mobile-close {
            background: none;
            border: none;
            font-size: 24px;
            cursor: pointer;
            color: var(--text-dark);
            margin-bottom: 24px;
            display: block;
            margin-left: auto;
        }
        .mobile-nav { list-style: none; }
        .mobile-nav li { margin-bottom: 4px; }
        .mobile-nav a {
            display: block;
            padding: 12px 16px;
            border-radius: var(--radius-btn);
            font-size: 16px;
            font-weight: 500;
            color: var(--text-dark);
            transition: background 0.2s;
        }
        .mobile-nav a:hover { background: var(--primary-light); color: var(--primary); }
        .mobile-nav a.active { background: var(--primary); color: #fff; }
        .mobile-search {
            display: flex;
            gap: 8px;
            margin-bottom: 24px;
        }
        .mobile-search input {
            flex: 1;
            padding: 10px 14px;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-btn);
            font-size: 14px;
            outline: none;
            font-family: var(--font-sans);
        }
        .mobile-search input:focus { border-color: var(--primary); }

        /* ===== Utility ===== */
        .text-center { text-align: center; }
        .mt-20 { margin-top: 20px; }
        .mb-20 { margin-bottom: 20px; }
        .gap-12 { gap: 12px; }

        /* Foundation override */
        .button { border-radius: var(--radius-btn); font-family: var(--font-sans); }
        .button.primary { background: var(--primary); }
        .button.primary:hover { background: var(--primary-dark); }
        .button.secondary { background: var(--secondary); }
        .button.secondary:hover { background: var(--secondary-dark); }
        .card { border-radius: var(--radius-card); box-shadow: var(--shadow-sm); border: 1px solid var(--border-color); }
        .card:hover { box-shadow: var(--shadow-hover); }

/* roulang page: article */
:root {
            --primary: #2F6D9E;
            --primary-dark: #1E4D73;
            --primary-light: #E5F0F9;
            --secondary: #FF7F50;
            --secondary-dark: #E5633A;
            --bg-light: #F9FAFB;
            --bg-card: #FFFFFF;
            --text-dark: #1F2937;
            --text-light: #6B7280;
            --text-muted: #9CA3AF;
            --border: #E2E8F0;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06), 0 4px 16px rgba(0,0,0,0.04);
            --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
            --radius-card: 12px;
            --radius-btn: 8px;
            --font-sans: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --font-serif: 'Noto Serif SC', 'Georgia', 'SimSun', serif;
            --max-width: 1200px;
            --nav-height: 56px;
        }

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

        html { scroll-behavior: smooth; }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-dark);
            background: var(--bg-light);
            -webkit-font-smoothing: antialiased;
        }

        a { color: var(--primary); text-decoration: none; transition: color 0.2s; }
        a:hover { color: var(--primary-dark); }
        a:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }

        img { max-width: 100%; height: auto; display: block; }
        ul, ol { list-style: none; }
        button, input, textarea { font-family: inherit; font-size: inherit; }

        .container { max-width: var(--max-width); margin: 0 auto; padding: 0 20px; }
        .container-fluid { width: 100%; padding: 0 20px; }

        /* ── Header & Nav ── */
        .site-header {
            background: var(--bg-card);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 1px 4px rgba(0,0,0,0.04);
        }

        .header-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 60px;
        }

        .header-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .header-brand .logo-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
        }

        .header-brand .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-dark);
            letter-spacing: -0.02em;
        }

        .header-brand .logo-slogan {
            font-size: 12px;
            color: var(--text-light);
            margin-left: 6px;
            display: none;
        }

        @media (min-width: 768px) {
            .header-brand .logo-slogan { display: inline-block; }
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .header-search {
            display: none;
            position: relative;
        }

        @media (min-width: 768px) {
            .header-search { display: block; }
        }

        .header-search input {
            width: 200px;
            height: 36px;
            padding: 0 36px 0 14px;
            border: 1px solid var(--border);
            border-radius: 20px;
            background: var(--bg-light);
            font-size: 14px;
            color: var(--text-dark);
            transition: border-color 0.2s, box-shadow 0.2s;
        }

        .header-search input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(47,109,158,0.12);
        }

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

        .header-search .search-icon {
            position: absolute;
            right: 12px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-light);
            font-size: 14px;
            pointer-events: none;
        }

        .hamburger {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: none;
            border: 1px solid var(--border);
            border-radius: var(--radius-btn);
            cursor: pointer;
            color: var(--text-dark);
            font-size: 18px;
            transition: background 0.2s;
        }

        .hamburger:hover { background: var(--bg-light); }

        @media (min-width: 768px) {
            .hamburger { display: none; }
        }

        /* ── Nav Tabs ── */
        .nav-tabs-wrapper {
            background: var(--bg-card);
            border-bottom: 1px solid var(--border);
        }

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

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

        .nav-tab {
            flex-shrink: 0;
            padding: 8px 20px;
            border-radius: 20px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-light);
            background: transparent;
            border: none;
            cursor: pointer;
            transition: all 0.25s;
            white-space: nowrap;
            text-decoration: none;
        }

        .nav-tab:hover {
            color: var(--primary);
            background: var(--primary-light);
        }

        .nav-tab.active {
            color: #fff;
            background: var(--primary);
            font-weight: 600;
        }

        .nav-tab:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        /* ── Article Page ── */
        .article-page {
            padding: 40px 0 60px;
        }

        .article-breadcrumb {
            font-size: 14px;
            color: var(--text-light);
            margin-bottom: 24px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 6px;
        }

        .article-breadcrumb a {
            color: var(--primary);
        }

        .article-breadcrumb .sep {
            color: var(--text-muted);
            margin: 0 4px;
        }

        .article-breadcrumb .current {
            color: var(--text-dark);
            font-weight: 500;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
            max-width: 240px;
        }

        .article-header {
            margin-bottom: 32px;
        }

        .article-title {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-dark);
            letter-spacing: -0.01em;
            margin-bottom: 12px;
        }

        @media (max-width: 768px) {
            .article-title { font-size: 24px; }
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px;
            font-size: 14px;
            color: var(--text-light);
        }

        .article-meta .date i {
            margin-right: 4px;
        }

        .article-meta .category-badge {
            display: inline-block;
            padding: 2px 14px;
            border-radius: 12px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 500;
        }

        .article-featured-image {
            margin-bottom: 32px;
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }

        .article-featured-image img {
            width: 100%;
            height: auto;
            aspect-ratio: 16 / 9;
            object-fit: cover;
        }

        .article-body {
            font-family: var(--font-serif);
            font-size: 17px;
            line-height: 1.8;
            color: var(--text-dark);
            max-width: 780px;
            margin: 0 auto;
        }

        .article-body p {
            margin-bottom: 1.2em;
        }

        .article-body h2, .article-body h3, .article-body h4 {
            font-family: var(--font-sans);
            margin-top: 1.6em;
            margin-bottom: 0.6em;
            font-weight: 700;
            color: var(--text-dark);
        }

        .article-body h2 { font-size: 24px; }
        .article-body h3 { font-size: 20px; }
        .article-body h4 { font-size: 18px; }

        .article-body blockquote {
            border-left: 4px solid var(--primary);
            padding: 12px 20px;
            margin: 1.2em 0;
            background: var(--primary-light);
            border-radius: 0 8px 8px 0;
            font-style: italic;
            color: var(--text-dark);
        }

        .article-body ul, .article-body ol {
            margin: 1em 0;
            padding-left: 24px;
        }

        .article-body ul { list-style: disc; }
        .article-body ol { list-style: decimal; }

        .article-body li { margin-bottom: 0.4em; }

        .article-body img {
            border-radius: 8px;
            margin: 1.2em auto;
            box-shadow: var(--shadow-sm);
        }

        .article-body a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 2px;
        }

        .article-body a:hover { color: var(--primary-dark); }

        /* ── Article Not Found ── */
        .article-not-found {
            text-align: center;
            padding: 80px 20px;
        }

        .article-not-found .icon {
            font-size: 48px;
            color: var(--text-muted);
            margin-bottom: 16px;
        }

        .article-not-found h2 {
            font-size: 24px;
            font-weight: 600;
            margin-bottom: 12px;
            color: var(--text-dark);
        }

        .article-not-found p {
            color: var(--text-light);
            margin-bottom: 24px;
        }

        .article-not-found .btn-home {
            display: inline-block;
            padding: 10px 28px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-btn);
            font-weight: 500;
            transition: background 0.2s;
        }

        .article-not-found .btn-home:hover {
            background: var(--primary-dark);
            color: #fff;
        }

        /* ── Related Articles ── */
        .related-section {
            margin-top: 60px;
            padding-top: 40px;
            border-top: 1px solid var(--border);
        }

        .related-title {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 24px;
            color: var(--text-dark);
        }

        .related-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }

        @media (min-width: 640px) {
            .related-grid { grid-template-columns: repeat(2, 1fr); }
        }

        @media (min-width: 1024px) {
            .related-grid { grid-template-columns: repeat(3, 1fr); }
        }

        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: transform 0.25s, box-shadow 0.25s;
            display: flex;
            flex-direction: column;
        }

        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }

        .related-card .card-img {
            aspect-ratio: 16 / 9;
            overflow: hidden;
        }

        .related-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s;
        }

        .related-card:hover .card-img img {
            transform: scale(1.05);
        }

        .related-card .card-body {
            padding: 16px 20px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .related-card .card-body h3 {
            font-size: 16px;
            font-weight: 600;
            line-height: 1.4;
            margin-bottom: 8px;
            color: var(--text-dark);
        }

        .related-card .card-body h3 a {
            color: inherit;
        }

        .related-card .card-body h3 a:hover {
            color: var(--primary);
        }

        .related-card .card-body .excerpt {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.6;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card .card-body .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: 12px;
            font-size: 13px;
            color: var(--text-muted);
        }

        .related-card .card-body .card-meta .tag {
            display: inline-block;
            padding: 1px 10px;
            border-radius: 10px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 12px;
            font-weight: 500;
        }

        /* ── Footer ── */
        .site-footer {
            background: #1E293B;
            color: #CBD5E1;
            padding: 40px 20px 24px;
        }

        .footer-inner {
            max-width: var(--max-width);
            margin: 0 auto;
        }

        .footer-row1 {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 16px;
            padding-bottom: 24px;
            border-bottom: 1px solid rgba(255,255,255,0.08);
            margin-bottom: 24px;
        }

        @media (min-width: 640px) {
            .footer-row1 {
                flex-direction: row;
                justify-content: space-between;
            }
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .footer-brand .logo-icon {
            width: 32px;
            height: 32px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 16px;
        }

        .footer-brand .logo-text {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
        }

        .footer-social {
            display: flex;
            gap: 12px;
        }

        .footer-social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255,255,255,0.06);
            color: #CBD5E1;
            font-size: 16px;
            transition: background 0.2s, color 0.2s;
        }

        .footer-social a:hover {
            background: var(--primary);
            color: #fff;
        }

        .footer-row2 {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 16px;
        }

        @media (min-width: 640px) {
            .footer-row2 {
                flex-direction: row;
                justify-content: space-between;
            }
        }

        .footer-nav {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 8px 20px;
        }

        .footer-nav a {
            color: #CBD5E1;
            font-size: 14px;
            transition: color 0.2s;
        }

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

        .footer-copy {
            font-size: 13px;
            color: #94A3B8;
            text-align: center;
        }

        .footer-copy a {
            color: #94A3B8;
        }

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

        /* ── Responsive ── */
        @media (max-width: 767px) {
            .article-body {
                font-size: 16px;
                padding: 0 4px;
            }

            .article-breadcrumb .current {
                max-width: 160px;
            }

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

        @media (max-width: 520px) {
            .article-title {
                font-size: 20px;
            }

            .article-meta {
                font-size: 13px;
                gap: 10px;
            }

            .header-brand .logo-text {
                font-size: 17px;
            }

            .nav-tab {
                padding: 6px 14px;
                font-size: 14px;
            }
        }

        /* ── Utility ── */
        .text-center { text-align: center; }
        .mt-20 { margin-top: 20px; }
        .mb-20 { margin-bottom: 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; }

        /* Foundation override */
        .grid-container { max-width: var(--max-width); padding-left: 20px; padding-right: 20px; }
        .cell { margin-bottom: 0; }
        .grid-x { margin-left: -10px; margin-right: -10px; }
        .grid-x > .cell { padding-left: 10px; padding-right: 10px; }

/* roulang page: category1 */
/* ===== CSS 设计变量 ===== */
        :root {
            --primary: #2F6D9E;
            --primary-dark: #1E4D73;
            --primary-light: #E5F0F9;
            --secondary: #FF7F50;
            --secondary-dark: #E5663A;
            --bg-light: #F9FAFB;
            --bg-card: #FFFFFF;
            --text-dark: #1F2937;
            --text-muted: #6B7280;
            --text-light: #CBD5E1;
            --border: #E2E8F0;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.04);
            --shadow-hover: 0 4px 12px rgba(0,0,0,0.1);
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-pill: 40px;
            --font-title: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --font-body: 'Noto Serif SC', 'SimSun', 'Songti SC', serif;
            --font-ui: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --max-width: 1200px;
            --nav-height: 60px;
            --section-gap: 80px;
            --section-gap-mobile: 50px;
        }
        /* ===== Base Reset ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-dark);
            background: var(--bg-light);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: var(--primary); text-decoration: none; transition: color 0.2s; }
        a:hover { color: var(--primary-dark); }
        a:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
        button, input, textarea, select { font-family: var(--font-ui); }
        ul, ol { list-style: none; }
        /* ===== Container ===== */
        .container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
        @media (max-width: 768px) { .container { padding: 0 16px; } }
        /* ===== 导航系统 ===== */
        .site-header {
            position: sticky; top: 0; z-index: 1000;
            background: var(--bg-card);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 1px 4px rgba(0,0,0,0.04);
        }
        .header-inner {
            max-width: var(--max-width); margin: 0 auto;
            display: flex; align-items: center; justify-content: space-between;
            padding: 0 24px; height: var(--nav-height);
        }
        .header-brand {
            display: flex; align-items: center; gap: 10px; flex-shrink: 0;
        }
        .logo-icon {
            width: 36px; height: 36px; border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            display: flex; align-items: center; justify-content: center;
            color: #fff; font-size: 18px;
        }
        .logo-text {
            font-family: var(--font-title); font-size: 20px; font-weight: 700;
            color: var(--text-dark); letter-spacing: -0.01em;
        }
        .logo-slogan {
            font-family: var(--font-ui); font-size: 12px; color: var(--text-muted);
            margin-left: 4px; letter-spacing: 0.02em;
        }
        .header-actions {
            display: flex; align-items: center; gap: 16px;
        }
        .header-search {
            position: relative; width: 200px;
        }
        .header-search input {
            width: 100%; padding: 8px 14px 8px 36px; border-radius: var(--radius-pill);
            border: 1px solid var(--border); background: var(--bg-light);
            font-size: 14px; color: var(--text-dark); transition: border 0.2s;
        }
        .header-search input::placeholder { color: var(--text-muted); }
        .header-search input:focus { outline: none; border-color: var(--primary); }
        .header-search i {
            position: absolute; left: 12px; top: 50%; transform: translateY(-50%);
            color: var(--text-muted); font-size: 14px;
        }
        .hamburger {
            display: none; background: none; border: none; font-size: 24px;
            color: var(--text-dark); cursor: pointer; padding: 4px;
        }
        .hamburger:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
        /* 频道导航第二行 */
        .nav-tabs-wrapper {
            background: var(--bg-card); border-bottom: 1px solid var(--border);
            padding: 0 24px;
        }
        .nav-tabs {
            max-width: var(--max-width); margin: 0 auto;
            display: flex; gap: 6px; padding: 8px 0;
            overflow-x: auto; -webkit-overflow-scrolling: touch;
            scrollbar-width: none; white-space: nowrap;
        }
        .nav-tabs::-webkit-scrollbar { display: none; }
        .nav-tab {
            display: inline-flex; align-items: center; padding: 8px 20px;
            border-radius: var(--radius-pill); font-family: var(--font-ui);
            font-size: 15px; font-weight: 500; color: var(--text-muted);
            transition: all 0.25s; flex-shrink: 0; cursor: pointer;
            background: transparent; border: none; text-decoration: none;
        }
        .nav-tab:hover { background: var(--primary-light); color: var(--primary); }
        .nav-tab.active {
            background: var(--primary); color: #fff; font-weight: 600;
        }
        .nav-tab:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
        /* 移动端导航 */
        @media (max-width: 768px) {
            .header-inner { padding: 0 16px; }
            .header-search { display: none; }
            .hamburger { display: block; }
            .logo-text { font-size: 17px; }
            .logo-slogan { display: none; }
            .nav-tabs { padding: 8px 0; gap: 4px; }
            .nav-tab { padding: 6px 14px; font-size: 13px; }
            .header-search.mobile-show { display: block; width: 100%; margin-top: 8px; }
        }
        @media (max-width: 480px) {
            .nav-tab { padding: 5px 12px; font-size: 12px; }
        }
        /* ===== 分类 Hero ===== */
        .category-hero {
            position: relative; overflow: hidden;
            min-height: 380px; display: flex; align-items: center;
            background: linear-gradient(135deg, var(--primary-light) 0%, #fff 100%);
        }
        .category-hero-bg {
            position: absolute; inset: 0; z-index: 0;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover; background-position: center 30%;
            opacity: 0.15; transform: scale(1.02);
        }
        .category-hero .container { position: relative; z-index: 1; width: 100%; }
        .category-hero-content { max-width: 720px; padding: 60px 0; }
        .category-hero-breadcrumb {
            font-family: var(--font-ui); font-size: 14px; color: var(--text-muted);
            margin-bottom: 16px; display: flex; align-items: center; gap: 6px;
        }
        .category-hero-breadcrumb a { color: var(--primary); }
        .category-hero-breadcrumb span { color: var(--text-muted); }
        .category-hero h1 {
            font-family: var(--font-title); font-size: 42px; font-weight: 800;
            color: var(--text-dark); letter-spacing: -0.02em; line-height: 1.2;
            margin-bottom: 16px;
        }
        .category-hero h1 i { color: var(--secondary); }
        .category-hero .hero-sub {
            font-size: 18px; color: var(--text-muted); line-height: 1.6;
            margin-bottom: 28px; max-width: 580px;
        }
        .category-hero .hero-stats {
            display: flex; gap: 32px; flex-wrap: wrap; margin-bottom: 28px;
        }
        .hero-stat { text-align: center; }
        .hero-stat-num {
            font-family: var(--font-title); font-size: 28px; font-weight: 700;
            color: var(--primary); line-height: 1.1;
        }
        .hero-stat-label { font-size: 13px; color: var(--text-muted); margin-top: 2px; }
        .category-hero .hero-cta {
            display: inline-flex; align-items: center; gap: 10px;
            padding: 14px 36px; background: var(--secondary); color: #fff;
            border: none; border-radius: var(--radius-btn); font-size: 17px;
            font-weight: 600; cursor: pointer; transition: background 0.25s, transform 0.2s;
            text-decoration: none;
        }
        .category-hero .hero-cta:hover { background: var(--secondary-dark); transform: translateY(-2px); color: #fff; }
        .category-hero .hero-cta i { font-size: 18px; transition: transform 0.2s; }
        .category-hero .hero-cta:hover i { transform: translateX(4px); }
        @media (max-width: 768px) {
            .category-hero { min-height: 300px; }
            .category-hero h1 { font-size: 28px; }
            .category-hero .hero-sub { font-size: 15px; }
            .hero-stat-num { font-size: 22px; }
            .category-hero-content { padding: 40px 0; }
            .category-hero .hero-cta { padding: 12px 28px; font-size: 15px; }
        }
        @media (max-width: 480px) {
            .category-hero h1 { font-size: 24px; }
            .category-hero .hero-stats { gap: 16px; }
            .hero-stat-num { font-size: 20px; }
        }
        /* ===== 通用板块标题 ===== */
        .section-title {
            font-family: var(--font-title); font-size: 30px; font-weight: 700;
            color: var(--text-dark); letter-spacing: 0.01em; margin-bottom: 8px;
            text-align: center;
        }
        .section-sub {
            font-size: 16px; color: var(--text-muted); text-align: center;
            max-width: 600px; margin: 0 auto 40px; line-height: 1.6;
        }
        @media (max-width: 768px) {
            .section-title { font-size: 24px; }
            .section-sub { font-size: 14px; margin-bottom: 28px; }
        }
        /* ===== 核心优势 ===== */
        .advantages-section {
            padding: var(--section-gap) 0; background: var(--bg-card);
        }
        @media (max-width: 768px) { .advantages-section { padding: var(--section-gap-mobile) 0; } }
        .advantage-grid {
            display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px;
        }
        .advantage-card {
            background: var(--bg-light); border-radius: var(--radius-card);
            padding: 32px 24px; text-align: center;
            border: 1px solid var(--border); transition: transform 0.3s, box-shadow 0.3s;
        }
        .advantage-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
        .advantage-icon {
            width: 64px; height: 64px; border-radius: 50%;
            background: var(--primary-light); color: var(--primary);
            display: flex; align-items: center; justify-content: center;
            margin: 0 auto 18px; font-size: 28px; transition: background 0.3s;
        }
        .advantage-card:hover .advantage-icon { background: var(--primary); color: #fff; }
        .advantage-card h3 {
            font-family: var(--font-title); font-size: 19px; font-weight: 600;
            color: var(--text-dark); margin-bottom: 8px;
        }
        .advantage-card p { font-size: 14px; color: var(--text-muted); line-height: 1.6; }
        @media (max-width: 768px) {
            .advantage-grid { grid-template-columns: 1fr; gap: 18px; }
            .advantage-card { padding: 24px 18px; }
        }
        @media (min-width: 769px) and (max-width: 1024px) {
            .advantage-grid { grid-template-columns: repeat(2, 1fr); }
        }
        /* ===== 课程分类展示 ===== */
        .courses-section {
            padding: var(--section-gap) 0; background: var(--bg-light);
        }
        @media (max-width: 768px) { .courses-section { padding: var(--section-gap-mobile) 0; } }
        .course-grid {
            display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
        }
        .course-card {
            background: var(--bg-card); border-radius: var(--radius-card);
            overflow: hidden; border: 1px solid var(--border);
            box-shadow: var(--shadow-sm); transition: transform 0.3s, box-shadow 0.3s;
            display: flex; flex-direction: column;
        }
        .course-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
        .course-card-img {
            width: 100%; aspect-ratio: 1 / 1; object-fit: cover;
            border-bottom: 1px solid var(--border);
        }
        .course-card-body { padding: 20px; flex: 1; display: flex; flex-direction: column; }
        .course-card-tag {
            display: inline-block; padding: 2px 12px; border-radius: var(--radius-pill);
            font-size: 12px; font-weight: 500; background: var(--primary-light);
            color: var(--primary); margin-bottom: 8px; width: fit-content;
        }
        .course-card-body h3 {
            font-family: var(--font-title); font-size: 18px; font-weight: 600;
            color: var(--text-dark); margin-bottom: 8px;
        }
        .course-card-body p {
            font-size: 14px; color: var(--text-muted); line-height: 1.6;
            flex: 1; margin-bottom: 12px;
        }
        .course-card-meta {
            display: flex; align-items: center; justify-content: space-between;
            font-size: 13px; color: var(--text-muted); border-top: 1px solid var(--border);
            padding-top: 12px; margin-top: auto;
        }
        .course-card-meta .stars { color: #F59E0B; letter-spacing: 1px; }
        .course-card-link {
            font-family: var(--font-ui); font-size: 14px; font-weight: 500;
            color: var(--primary); display: inline-flex; align-items: center; gap: 4px;
            transition: gap 0.2s;
        }
        .course-card-link:hover { gap: 8px; }
        @media (max-width: 1024px) { .course-grid { grid-template-columns: repeat(2, 1fr); } }
        @media (max-width: 480px) { .course-grid { grid-template-columns: 1fr; gap: 16px; } }
        /* ===== 学习流程 ===== */
        .process-section {
            padding: var(--section-gap) 0; background: var(--bg-card);
        }
        @media (max-width: 768px) { .process-section { padding: var(--section-gap-mobile) 0; } }
        .process-steps {
            display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
            counter-reset: step;
        }
        .process-step {
            text-align: center; padding: 32px 16px; position: relative;
            background: var(--bg-light); border-radius: var(--radius-card);
            border: 1px solid var(--border); transition: transform 0.3s;
        }
        .process-step:hover { transform: translateY(-3px); }
        .process-step::before {
            counter-increment: step; content: counter(step);
            display: flex; align-items: center; justify-content: center;
            width: 44px; height: 44px; border-radius: 50%;
            background: var(--primary); color: #fff; font-family: var(--font-title);
            font-size: 20px; font-weight: 700; margin: 0 auto 16px;
        }
        .process-step h3 {
            font-family: var(--font-title); font-size: 18px; font-weight: 600;
            color: var(--text-dark); margin-bottom: 6px;
        }
        .process-step p { font-size: 14px; color: var(--text-muted); line-height: 1.6; }
        @media (max-width: 768px) { .process-steps { grid-template-columns: repeat(2, 1fr); gap: 16px; } }
        @media (max-width: 480px) { .process-steps { grid-template-columns: 1fr; } }
        /* ===== 学员评价 ===== */
        .reviews-section {
            padding: var(--section-gap) 0; background: var(--bg-light);
        }
        @media (max-width: 768px) { .reviews-section { padding: var(--section-gap-mobile) 0; } }
        .review-scroll {
            display: flex; gap: 20px; overflow-x: auto; padding: 12px 4px 20px;
            scroll-snap-type: x mandatory; -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }
        .review-scroll::-webkit-scrollbar { display: none; }
        .review-card {
            flex: 0 0 280px; background: var(--bg-card); border-radius: var(--radius-card);
            padding: 24px; border: 1px solid var(--border);
            box-shadow: var(--shadow-sm); scroll-snap-align: start;
            transition: transform 0.3s, box-shadow 0.3s;
        }
        .review-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
        .review-card-top {
            display: flex; align-items: center; gap: 12px; margin-bottom: 12px;
        }
        .review-avatar {
            width: 48px; height: 48px; border-radius: 50%; object-fit: cover;
            background: var(--primary-light);
        }
        .review-name { font-family: var(--font-title); font-weight: 600; font-size: 15px; color: var(--text-dark); }
        .review-stars { color: #F59E0B; font-size: 14px; letter-spacing: 1px; }
        .review-text { font-size: 14px; color: var(--text-muted); line-height: 1.7; margin-bottom: 8px; }
        .review-like {
            display: inline-flex; align-items: center; gap: 4px;
            font-size: 13px; color: var(--text-muted); cursor: pointer;
            transition: color 0.2s;
        }
        .review-like:hover { color: #EF4444; }
        .review-like.liked { color: #EF4444; }
        @media (max-width: 480px) { .review-card { flex: 0 0 260px; } }
        /* ===== FAQ ===== */
        .faq-section {
            padding: var(--section-gap) 0; background: var(--bg-card);
        }
        @media (max-width: 768px) { .faq-section { padding: var(--section-gap-mobile) 0; } }
        .faq-list { max-width: 760px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
        .faq-item {
            border: 1px solid var(--border); border-radius: var(--radius-card);
            overflow: hidden; transition: box-shadow 0.2s;
        }
        .faq-item:hover { box-shadow: var(--shadow-sm); }
        .faq-question {
            display: flex; align-items: center; justify-content: space-between;
            padding: 18px 22px; cursor: pointer; background: var(--bg-light);
            font-family: var(--font-ui); font-size: 16px; font-weight: 500;
            color: var(--text-dark); transition: background 0.2s;
            border: none; width: 100%; text-align: left;
        }
        .faq-question:hover { background: var(--primary-light); }
        .faq-question i { transition: transform 0.3s; color: var(--primary); font-size: 14px; }
        .faq-item.open .faq-question i { transform: rotate(180deg); }
        .faq-answer {
            max-height: 0; overflow: hidden; transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 22px; font-size: 15px; color: var(--text-muted); line-height: 1.7;
            background: var(--bg-card);
        }
        .faq-item.open .faq-answer {
            max-height: 300px; padding: 18px 22px;
        }
        @media (max-width: 768px) {
            .faq-question { font-size: 14px; padding: 14px 16px; }
            .faq-answer { font-size: 13px; }
            .faq-item.open .faq-answer { padding: 14px 16px; }
        }
        /* ===== CTA ===== */
        .cta-section {
            padding: 80px 0; position: relative; overflow: hidden;
            background: linear-gradient(135deg, var(--primary) 0%, #1E4D73 60%, var(--secondary) 150%);
        }
        .cta-section::before {
            content: ''; position: absolute; inset: 0;
            background-image: radial-gradient(circle at 20% 50%, rgba(255,127,80,0.15) 0%, transparent 50%),
                              radial-gradient(circle at 80% 20%, rgba(255,255,255,0.08) 0%, transparent 40%);
            pointer-events: none;
        }
        .cta-inner {
            position: relative; z-index: 1; text-align: center; max-width: 640px; margin: 0 auto;
        }
        .cta-inner h2 {
            font-family: var(--font-title); font-size: 34px; font-weight: 700;
            color: #fff; margin-bottom: 12px; letter-spacing: -0.01em;
        }
        .cta-inner p { font-size: 17px; color: rgba(255,255,255,0.85); margin-bottom: 28px; line-height: 1.6; }
        .cta-form {
            display: flex; gap: 12px; max-width: 480px; margin: 0 auto; flex-wrap: wrap;
            justify-content: center;
        }
        .cta-form input {
            flex: 1; min-width: 200px; padding: 14px 20px; border-radius: var(--radius-btn);
            border: none; font-size: 15px; background: rgba(255,255,255,0.96);
            color: var(--text-dark); outline: none; transition: box-shadow 0.2s;
        }
        .cta-form input:focus { box-shadow: 0 0 0 3px rgba(255,255,255,0.3); }
        .cta-form input::placeholder { color: var(--text-muted); }
        .cta-form button {
            padding: 14px 32px; border-radius: var(--radius-btn); border: none;
            background: #fff; color: var(--primary); font-size: 16px; font-weight: 600;
            cursor: pointer; transition: background 0.25s, transform 0.2s;
            white-space: nowrap;
        }
        .cta-form button:hover { background: var(--bg-light); transform: translateY(-2px); }
        .cta-form button:active { transform: translateY(0); }
        .cta-note { font-size: 13px; color: rgba(255,255,255,0.6); margin-top: 14px; }
        @media (max-width: 768px) {
            .cta-section { padding: 50px 0; }
            .cta-inner h2 { font-size: 26px; }
            .cta-inner p { font-size: 15px; }
            .cta-form input { min-width: 160px; padding: 12px 16px; }
            .cta-form button { padding: 12px 24px; font-size: 14px; }
        }
        /* ===== 页脚 ===== */
        .site-footer {
            background: #1E293B; color: var(--text-light); padding: 48px 0 32px;
        }
        .footer-inner { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
        .footer-row1 {
            display: flex; justify-content: space-between; align-items: center;
            padding-bottom: 24px; border-bottom: 1px solid rgba(255,255,255,0.08);
            flex-wrap: wrap; gap: 16px;
        }
        .footer-brand {
            display: flex; align-items: center; gap: 10px;
        }
        .footer-brand .logo-icon {
            width: 32px; height: 32px; font-size: 14px;
        }
        .footer-brand .logo-text {
            font-family: var(--font-title); font-size: 18px; font-weight: 600; color: #fff;
        }
        .footer-social { display: flex; gap: 14px; }
        .footer-social a {
            display: flex; align-items: center; justify-content: center;
            width: 38px; height: 38px; border-radius: 50%;
            background: rgba(255,255,255,0.06); color: var(--text-light);
            font-size: 18px; transition: background 0.25s, color 0.25s;
        }
        .footer-social a:hover { background: var(--primary); color: #fff; }
        .footer-row2 {
            padding-top: 24px; display: flex; justify-content: space-between;
            flex-wrap: wrap; gap: 16px; font-size: 14px;
        }
        .footer-nav { display: flex; gap: 20px; flex-wrap: wrap; }
        .footer-nav a { color: var(--text-light); transition: color 0.2s; font-size: 14px; }
        .footer-nav a:hover { color: #fff; }
        .footer-copy { color: rgba(255,255,255,0.5); font-size: 13px; }
        .footer-copy a { color: rgba(255,255,255,0.5); }
        .footer-copy a:hover { color: #fff; }
        @media (max-width: 768px) {
            .site-footer { padding: 32px 0 24px; }
            .footer-row1 { flex-direction: column; align-items: flex-start; }
            .footer-row2 { flex-direction: column; align-items: flex-start; }
            .footer-nav { gap: 12px; }
            .footer-inner { padding: 0 16px; }
        }
        /* ===== 响应式辅助 ===== */
        @media (max-width: 768px) {
            .hide-mobile { display: none !important; }
        }
        @media (min-width: 769px) {
            .hide-desktop { display: none !important; }
        }
        /* ===== 过渡与通用 ===== */
        .fade-in-up {
            opacity: 0; transform: translateY(24px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }
        .fade-in-up.visible { opacity: 1; transform: translateY(0); }

/* roulang page: category2 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #2F6D9E;
            --primary-dark: #1E4D72;
            --primary-light: #E5F0F9;
            --secondary: #FF7F50;
            --secondary-dark: #E06633;
            --bg-light: #F9FAFB;
            --bg-white: #FFFFFF;
            --text-dark: #1F2937;
            --text-muted: #6B7280;
            --text-light: #CBD5E1;
            --border-color: #E2E8F0;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --shadow-soft: 0 2px 8px rgba(0,0,0,0.06), 0 4px 16px rgba(0,0,0,0.04);
            --shadow-hover: 0 4px 12px rgba(0,0,0,0.1);
            --shadow-heavy: 0 8px 24px rgba(0,0,0,0.12);
            --font-sans: 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --font-serif: 'Noto Serif SC', 'Source Han Serif SC', serif;
            --transition: 0.25s ease;
            --max-width: 1200px;
            --nav-z: 100;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-dark);
            background: var(--bg-light);
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover, a:focus {
            color: var(--primary-dark);
        }
        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        button, input, textarea, select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* ===== Typography ===== */
        h1, h2, h3, h4, h5, h6 {
            font-family: var(--font-sans);
            font-weight: 700;
            color: var(--text-dark);
            line-height: 1.25;
        }
        h1 { font-size: 36px; letter-spacing: -0.02em; }
        h2 { font-size: 28px; letter-spacing: 0.01em; }
        h3 { font-size: 20px; font-weight: 600; }
        .section-title {
            text-align: center;
            margin-bottom: 40px;
        }
        .section-title h2 {
            font-size: 30px;
            margin-bottom: 10px;
        }
        .section-title p {
            font-size: 16px;
            color: var(--text-muted);
            max-width: 600px;
            margin: 0 auto;
        }

        /* ===== Header & Navigation ===== */
        .site-header {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: var(--nav-z);
        }
        .header-row1 {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 10px 20px;
            max-width: var(--max-width);
            margin: 0 auto;
        }
        .header-brand {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo-icon {
            font-size: 24px;
            color: var(--primary);
        }
        .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary-dark);
            letter-spacing: -0.01em;
            white-space: nowrap;
        }
        .logo-slogan {
            font-size: 13px;
            color: var(--text-muted);
            margin-left: 6px;
            font-weight: 400;
            display: none;
        }
        .header-search {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .header-search input {
            border: 1px solid var(--border-color);
            border-radius: 20px;
            padding: 8px 18px;
            font-size: 14px;
            background: var(--bg-light);
            width: 200px;
            transition: border var(--transition), box-shadow var(--transition);
        }
        .header-search input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(47,109,158,0.15);
            outline: none;
        }
        .hamburger {
            display: none;
            font-size: 24px;
            background: none;
            border: none;
            color: var(--text-dark);
            cursor: pointer;
            padding: 4px 8px;
        }
        .nav-tabs {
            display: flex;
            gap: 4px;
            padding: 0 20px 10px 20px;
            max-width: var(--max-width);
            margin: 0 auto;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }
        .nav-tabs::-webkit-scrollbar { display: none; }
        .nav-tab {
            display: inline-block;
            padding: 8px 22px;
            border-radius: 20px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-muted);
            background: transparent;
            transition: background var(--transition), color var(--transition);
            white-space: nowrap;
            text-decoration: none;
        }
        .nav-tab:hover {
            background: var(--primary-light);
            color: var(--primary);
        }
        .nav-tab.active {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
        }
        .nav-tab.active:hover {
            background: var(--primary-dark);
        }

        /* ===== Hero ===== */
        .category-hero {
            position: relative;
            background: linear-gradient(135deg, #E5F0F9 0%, #FFFFFF 70%);
            padding: 70px 20px 60px;
            overflow: hidden;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.webp') center / cover no-repeat;
            opacity: 0.15;
            z-index: 0;
        }
        .category-hero .container {
            position: relative;
            z-index: 1;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        .category-hero-text {
            flex: 1 1 55%;
            min-width: 280px;
        }
        .category-hero-text h1 {
            font-size: 40px;
            line-height: 1.2;
            margin-bottom: 16px;
            color: var(--primary-dark);
        }
        .category-hero-text h1 span {
            color: var(--secondary);
        }
        .category-hero-text p {
            font-size: 18px;
            color: var(--text-muted);
            margin-bottom: 28px;
            max-width: 520px;
            line-height: 1.6;
        }
        .category-hero-text .hero-cta {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--secondary);
            color: #fff;
            padding: 14px 36px;
            border-radius: var(--radius-sm);
            font-size: 17px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
            text-decoration: none;
        }
        .category-hero-text .hero-cta:hover {
            background: var(--secondary-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }
        .category-hero-text .hero-cta i {
            font-size: 18px;
        }
        .category-hero-image {
            flex: 0 0 38%;
            min-width: 240px;
            text-align: center;
        }
        .category-hero-image img {
            width: 100%;
            max-width: 360px;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-heavy);
            transform: rotate(2deg);
            transition: transform 0.4s ease;
        }
        .category-hero-image img:hover {
            transform: rotate(0deg) scale(1.02);
        }

        /* ===== Features Cards ===== */
        .features-section {
            padding: 70px 20px;
            background: var(--bg-white);
        }
        .feature-card {
            background: var(--bg-light);
            border-radius: var(--radius-md);
            padding: 32px 24px 28px;
            text-align: center;
            box-shadow: var(--shadow-soft);
            transition: transform var(--transition), box-shadow var(--transition);
            height: 100%;
            border: 1px solid rgba(226,232,240,0.5);
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }
        .feature-card .icon-wrap {
            font-size: 38px;
            color: var(--primary);
            margin-bottom: 16px;
            background: var(--primary-light);
            width: 72px;
            height: 72px;
            line-height: 72px;
            border-radius: 50%;
            margin-left: auto;
            margin-right: auto;
        }
        .feature-card h3 {
            font-size: 19px;
            margin-bottom: 10px;
        }
        .feature-card p {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.6;
        }
        .feature-card .badge {
            display: inline-block;
            background: var(--secondary);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 3px 14px;
            border-radius: 20px;
            margin-top: 12px;
        }

        /* ===== Scenarios ===== */
        .scenarios-section {
            padding: 70px 20px;
            background: var(--bg-light);
        }
        .scenario-item {
            display: flex;
            align-items: flex-start;
            gap: 18px;
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 24px 20px;
            box-shadow: var(--shadow-soft);
            height: 100%;
            transition: box-shadow var(--transition), transform var(--transition);
            border: 1px solid var(--border-color);
        }
        .scenario-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .scenario-item .scenario-icon {
            font-size: 28px;
            color: var(--secondary);
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            background: rgba(255,127,80,0.12);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .scenario-item h4 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 4px;
        }
        .scenario-item p {
            font-size: 14px;
            color: var(--text-muted);
            margin: 0;
        }

        /* ===== Steps / Process ===== */
        .steps-section {
            padding: 70px 20px;
            background: var(--bg-white);
        }
        .step-card {
            text-align: center;
            padding: 20px 16px;
            position: relative;
        }
        .step-number {
            font-size: 32px;
            font-weight: 800;
            color: var(--primary);
            background: var(--primary-light);
            width: 60px;
            height: 60px;
            line-height: 60px;
            border-radius: 50%;
            margin: 0 auto 16px;
            position: relative;
            z-index: 1;
        }
        .step-card h4 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 6px;
        }
        .step-card p {
            font-size: 14px;
            color: var(--text-muted);
            margin: 0;
        }
        .step-connector {
            display: none;
        }

        /* ===== Community Content Cards ===== */
        .content-section {
            padding: 70px 20px;
            background: var(--bg-light);
        }
        .content-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-soft);
            transition: transform var(--transition), box-shadow var(--transition);
            height: 100%;
            border: 1px solid var(--border-color);
        }
        .content-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-hover);
        }
        .content-card .card-img {
            width: 100%;
            aspect-ratio: 4 / 3;
            object-fit: cover;
        }
        .content-card .card-body {
            padding: 18px 20px 20px;
        }
        .content-card .card-body h3 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 6px;
            line-height: 1.4;
        }
        .content-card .card-body p {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .content-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--text-muted);
        }
        .content-card .card-meta .tag {
            background: var(--primary-light);
            color: var(--primary);
            padding: 2px 12px;
            border-radius: 12px;
            font-size: 12px;
            font-weight: 500;
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 70px 20px;
            background: var(--bg-white);
        }
        .faq-item {
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            margin-bottom: 12px;
            overflow: hidden;
            transition: box-shadow var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-soft);
        }
        .faq-question {
            background: var(--bg-light);
            padding: 16px 22px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            border: none;
            width: 100%;
            text-align: left;
            color: var(--text-dark);
            transition: background var(--transition);
        }
        .faq-question:hover {
            background: var(--primary-light);
        }
        .faq-question i {
            transition: transform var(--transition);
            color: var(--primary);
        }
        .faq-question.active i {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 22px 16px;
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.7;
            display: none;
        }
        .faq-answer.show {
            display: block;
        }

        /* ===== CTA Section ===== */
        .cta-section {
            padding: 70px 20px;
            background: linear-gradient(135deg, var(--primary) 0%, #1E4D72 100%);
            color: #fff;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center / cover no-repeat;
            opacity: 0.06;
            z-index: 0;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-size: 30px;
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-section p {
            font-size: 17px;
            color: rgba(255,255,255,0.85);
            margin-bottom: 28px;
        }
        .cta-form {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
            max-width: 520px;
            margin: 0 auto;
        }
        .cta-form input {
            flex: 1 1 220px;
            padding: 14px 20px;
            border-radius: var(--radius-sm);
            border: none;
            font-size: 15px;
            background: #fff;
            color: var(--text-dark);
            min-width: 180px;
        }
        .cta-form input::placeholder {
            color: var(--text-muted);
        }
        .cta-form input:focus {
            outline: 2px solid var(--secondary);
        }
        .cta-form button {
            background: var(--secondary);
            color: #fff;
            padding: 14px 34px;
            border: none;
            border-radius: var(--radius-sm);
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: background var(--transition), transform var(--transition);
            white-space: nowrap;
        }
        .cta-form button:hover {
            background: var(--secondary-dark);
            transform: translateY(-2px);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #1E293B;
            color: var(--text-light);
            padding: 40px 20px 28px;
        }
        .footer-inner {
            max-width: var(--max-width);
            margin: 0 auto;
        }
        .footer-row1 {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            padding-bottom: 24px;
            border-bottom: 1px solid rgba(255,255,255,0.08);
            margin-bottom: 20px;
        }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .footer-brand .logo-icon {
            color: var(--secondary);
        }
        .footer-brand .logo-text {
            color: #fff;
            font-size: 18px;
        }
        .footer-social a {
            color: var(--text-light);
            font-size: 20px;
            margin-left: 14px;
            transition: color var(--transition);
        }
        .footer-social a:hover {
            color: var(--secondary);
        }
        .footer-row2 {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .footer-nav {
            display: flex;
            flex-wrap: wrap;
            gap: 10px 22px;
            justify-content: center;
        }
        .footer-nav a {
            color: var(--text-light);
            font-size: 14px;
            transition: color var(--transition);
        }
        .footer-nav a:hover {
            color: #fff;
        }
        .footer-copy {
            font-size: 13px;
            text-align: center;
            color: rgba(255,255,255,0.5);
        }
        .footer-copy a {
            color: rgba(255,255,255,0.6);
        }
        .footer-copy a:hover {
            color: #fff;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .category-hero-text h1 { font-size: 34px; }
            .category-hero-image { flex: 0 0 40%; }
        }
        @media (max-width: 768px) {
            .header-row1 {
                padding: 8px 16px;
            }
            .header-search input {
                width: 140px;
                font-size: 13px;
                padding: 6px 14px;
            }
            .hamburger {
                display: block;
            }
            .nav-tabs {
                padding: 0 16px 8px;
                gap: 2px;
            }
            .nav-tab {
                font-size: 14px;
                padding: 6px 16px;
            }
            .category-hero {
                padding: 50px 16px 40px;
            }
            .category-hero .container {
                flex-direction: column;
                text-align: center;
            }
            .category-hero-text {
                flex: 1 1 100%;
                margin-bottom: 28px;
            }
            .category-hero-text h1 {
                font-size: 30px;
            }
            .category-hero-text p {
                margin: 0 auto 24px;
                font-size: 16px;
            }
            .category-hero-image {
                flex: 0 0 80%;
            }
            h1 { font-size: 28px; }
            h2 { font-size: 24px; }
            .section-title h2 { font-size: 24px; }
            .features-section, .scenarios-section, .steps-section, .content-section, .faq-section, .cta-section {
                padding: 50px 16px;
            }
            .feature-card, .scenario-item, .step-card {
                margin-bottom: 20px;
            }
            .step-card {
                padding: 16px 12px;
            }
            .footer-row1 {
                flex-direction: column;
                text-align: center;
            }
            .footer-nav {
                justify-content: center;
                gap: 8px 16px;
            }
            .cta-form {
                flex-direction: column;
                align-items: stretch;
            }
            .cta-form input {
                flex: 1 1 auto;
                width: 100%;
            }
            .cta-form button {
                width: 100%;
            }
        }
        @media (max-width: 520px) {
            .header-search input {
                width: 100px;
                font-size: 12px;
                padding: 5px 12px;
            }
            .logo-text {
                font-size: 17px;
            }
            .nav-tab {
                font-size: 13px;
                padding: 5px 12px;
            }
            .category-hero-text h1 {
                font-size: 26px;
            }
            .category-hero-text p {
                font-size: 15px;
            }
            .category-hero-text .hero-cta {
                padding: 12px 24px;
                font-size: 15px;
            }
            .feature-card {
                padding: 24px 16px 20px;
            }
            .cta-section h2 {
                font-size: 24px;
            }
        }

        /* ===== Utilities ===== */
        .text-center { text-align: center; }
        .mb-20 { margin-bottom: 20px; }
        .mt-20 { margin-top: 20px; }
        .gap-24 { gap: 24px; }