/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a1a2e;
            --primary-light: #2d2d4a;
            --primary-dark: #0f0f1a;
            --accent: #f0a500;
            --accent-light: #ffc34d;
            --accent-dark: #c98800;
            --secondary: #4a6fa5;
            --secondary-light: #6b8fc7;
            --bg-dark: #0f0f1a;
            --bg-card: #1e1e36;
            --bg-section: #f0ede8;
            --bg-white: #ffffff;
            --text-light: #f4f4f8;
            --text-muted: #b0b0c8;
            --text-dark: #1a1a2e;
            --text-body: #3a3a4a;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --border-card: rgba(255, 255, 255, 0.06);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.15);
            --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.20);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.30);
            --shadow-glow: 0 0 30px rgba(240, 165, 0, 0.15);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --max-width: 1200px;
            --nav-top-height: 56px;
            --nav-tabs-height: 48px;
        }

        /* ===== Reset / Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-dark);
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--accent);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover,
        a:focus {
            color: var(--accent-light);
            outline: none;
        }
        a:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
            border-radius: 4px;
        }
        button,
        .button {
            cursor: pointer;
            font-family: var(--font-sans);
            transition: var(--transition);
        }
        input,
        textarea {
            font-family: var(--font-sans);
            transition: var(--transition);
        }
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 1px;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--text-dark);
        }

        /* ===== 容器 ===== */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(15, 15, 26, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-subtle);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
        }
        .nav-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-top-height);
            padding: 0 24px;
            max-width: var(--max-width);
            margin: 0 auto;
        }
        .nav-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: var(--text-light);
            letter-spacing: 0.5px;
        }
        .nav-brand i {
            color: var(--accent);
            font-size: 26px;
        }
        .nav-brand span {
            background: linear-gradient(135deg, var(--accent-light), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-right {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .nav-search {
            position: relative;
            display: flex;
            align-items: center;
        }
        .nav-search input {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid var(--border-subtle);
            border-radius: 24px;
            padding: 6px 16px 6px 38px;
            color: var(--text-light);
            font-size: 14px;
            width: 200px;
            transition: var(--transition);
        }
        .nav-search input::placeholder {
            color: var(--text-muted);
        }
        .nav-search input:focus {
            background: rgba(255, 255, 255, 0.12);
            border-color: var(--accent);
            width: 240px;
            outline: none;
        }
        .nav-search i {
            position: absolute;
            left: 12px;
            color: var(--text-muted);
            font-size: 14px;
            pointer-events: none;
        }
        .nav-cta {
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: var(--primary-dark);
            border: none;
            border-radius: 24px;
            padding: 7px 20px;
            font-size: 14px;
            font-weight: 700;
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-cta:hover,
        .nav-cta:focus {
            transform: scale(1.04);
            box-shadow: var(--shadow-glow);
            color: var(--primary-dark);
        }
        .nav-tabs-wrap {
            background: rgba(15, 15, 26, 0.70);
            border-top: 1px solid var(--border-subtle);
        }
        .nav-tabs {
            display: flex;
            align-items: center;
            gap: 4px;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            height: var(--nav-tabs-height);
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }
        .nav-tabs::-webkit-scrollbar {
            display: none;
        }
        .nav-tabs a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 18px;
            border-radius: 20px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-muted);
            white-space: nowrap;
            transition: var(--transition);
            border: 1px solid transparent;
        }
        .nav-tabs a i {
            font-size: 13px;
        }
        .nav-tabs a:hover {
            color: var(--text-light);
            background: rgba(255, 255, 255, 0.06);
            border-color: var(--border-subtle);
        }
        .nav-tabs a.active {
            color: var(--accent);
            background: rgba(240, 165, 0, 0.10);
            border-color: rgba(240, 165, 0, 0.25);
            font-weight: 600;
        }
        .nav-tabs a.active i {
            color: var(--accent);
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-light);
            font-size: 22px;
            padding: 4px 8px;
            border-radius: 8px;
            transition: var(--transition);
        }
        .mobile-toggle:hover {
            background: rgba(255, 255, 255, 0.06);
        }

        /* ===== 移动端导航抽屉 ===== */
        .mobile-drawer {
            display: none;
            position: fixed;
            top: var(--nav-top-height);
            left: 0;
            right: 0;
            background: rgba(15, 15, 26, 0.98);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            padding: 16px 24px 24px;
            border-bottom: 1px solid var(--border-subtle);
            z-index: 999;
            box-shadow: var(--shadow-lg);
        }
        .mobile-drawer.open {
            display: block;
        }
        .mobile-drawer a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            color: var(--text-muted);
            font-size: 16px;
            font-weight: 500;
            transition: var(--transition);
        }
        .mobile-drawer a:hover {
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-light);
        }
        .mobile-drawer a.active {
            color: var(--accent);
            background: rgba(240, 165, 0, 0.08);
        }
        .mobile-drawer .drawer-cta {
            margin-top: 12px;
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: var(--primary-dark);
            border-radius: 24px;
            text-align: center;
            font-weight: 700;
            justify-content: center;
        }
        .mobile-drawer .drawer-cta:hover {
            transform: scale(1.02);
            color: var(--primary-dark);
        }

        /* ===== Hero 首屏 ===== */
        .hero {
            position: relative;
            min-height: 82vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 120px 24px 80px;
            background: var(--bg-dark);
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.35;
            z-index: 0;
            animation: heroZoom 20s ease-in-out infinite alternate;
        }
        @keyframes heroZoom {
            0% {
                transform: scale(1);
            }
            100% {
                transform: scale(1.08);
            }
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center, rgba(15, 15, 26, 0.40) 0%, var(--bg-dark) 80%);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 820px;
            padding: 20px 0;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(240, 165, 0, 0.12);
            border: 1px solid rgba(240, 165, 0, 0.25);
            border-radius: 40px;
            padding: 6px 20px 6px 12px;
            font-size: 14px;
            font-weight: 500;
            color: var(--accent-light);
            margin-bottom: 28px;
            backdrop-filter: blur(4px);
        }
        .hero-badge i {
            font-size: 16px;
        }
        .hero h1 {
            font-size: 58px;
            font-weight: 900;
            color: var(--text-light);
            letter-spacing: -0.5px;
            line-height: 1.15;
            margin-bottom: 20px;
        }
        .hero h1 .highlight {
            background: linear-gradient(135deg, var(--accent-light), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-sub {
            font-size: 20px;
            color: var(--text-muted);
            max-width: 640px;
            margin: 0 auto 36px;
            line-height: 1.6;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
            align-items: center;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: var(--primary-dark);
            border: none;
            border-radius: 40px;
            padding: 14px 36px;
            font-size: 17px;
            font-weight: 700;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
            box-shadow: 0 4px 20px rgba(240, 165, 0, 0.25);
        }
        .btn-primary:hover,
        .btn-primary:focus {
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(240, 165, 0, 0.35);
            color: var(--primary-dark);
        }
        .btn-secondary {
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-light);
            border: 1px solid var(--border-subtle);
            border-radius: 40px;
            padding: 14px 36px;
            font-size: 17px;
            font-weight: 600;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
            backdrop-filter: blur(4px);
        }
        .btn-secondary:hover,
        .btn-secondary:focus {
            background: rgba(255, 255, 255, 0.12);
            border-color: var(--accent);
            color: var(--text-light);
            transform: translateY(-2px);
        }
        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            justify-content: center;
            margin-top: 56px;
            padding-top: 36px;
            border-top: 1px solid var(--border-subtle);
        }
        .hero-stat {
            text-align: center;
        }
        .hero-stat .num {
            font-size: 32px;
            font-weight: 800;
            color: var(--accent-light);
            line-height: 1.2;
        }
        .hero-stat .label {
            font-size: 14px;
            color: var(--text-muted);
            margin-top: 4px;
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 80px 0;
            position: relative;
        }
        .section-dark {
            background: var(--bg-dark);
            color: var(--text-light);
        }
        .section-dark h2,
        .section-dark h3,
        .section-dark h4 {
            color: var(--text-light);
        }
        .section-light {
            background: var(--bg-section);
            color: var(--text-body);
        }
        .section-white {
            background: var(--bg-white);
            color: var(--text-body);
        }
        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            color: var(--accent);
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 12px;
        }
        .section-tag i {
            font-size: 14px;
        }
        .section-title {
            font-size: 38px;
            font-weight: 800;
            margin-bottom: 16px;
            letter-spacing: -0.3px;
        }
        .section-sub {
            font-size: 18px;
            color: var(--text-muted);
            max-width: 680px;
            margin: 0 auto 48px;
            text-align: center;
            line-height: 1.6;
        }
        .section-dark .section-sub {
            color: var(--text-muted);
        }
        .text-center {
            text-align: center;
        }

        /* ===== 卡片通用 ===== */
        .card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-card);
            overflow: hidden;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: rgba(240, 165, 0, 0.15);
        }
        .card-light {
            background: var(--bg-white);
            border: 1px solid #e8e6e0;
        }
        .card-light:hover {
            border-color: var(--accent);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.06);
        }
        .card-img {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            display: block;
        }
        .card-body {
            padding: 20px 24px 24px;
        }
        .card-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            padding: 3px 12px;
            border-radius: 20px;
            background: rgba(240, 165, 0, 0.12);
            color: var(--accent);
            margin-bottom: 10px;
            letter-spacing: 0.3px;
        }
        .card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .card p {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.6;
        }
        .card-dark h3 {
            color: var(--text-light);
        }
        .card-dark p {
            color: var(--text-muted);
        }
        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--accent);
            margin-top: 14px;
            transition: var(--transition);
        }
        .card-link:hover {
            gap: 10px;
            color: var(--accent-light);
        }

        /* ===== 网格布局 ===== */
        .grid-2 {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }
        .grid-3 {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: 28px;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr 1fr;
            gap: 24px;
        }
        @media (max-width: 1024px) {
            .grid-4 {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .grid-2,
            .grid-3,
            .grid-4 {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }

        /* ===== 分类入口板块 ===== */
        .cat-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            min-height: 280px;
            display: flex;
            align-items: flex-end;
            transition: var(--transition);
            cursor: pointer;
        }
        .cat-card img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }
        .cat-card:hover img {
            transform: scale(1.06);
        }
        .cat-card-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(15, 15, 26, 0.85) 0%, rgba(15, 15, 26, 0.20) 60%, transparent 100%);
            z-index: 1;
        }
        .cat-card-body {
            position: relative;
            z-index: 2;
            padding: 28px 24px;
            width: 100%;
        }
        .cat-card-body h3 {
            font-size: 24px;
            font-weight: 800;
            color: var(--text-light);
            margin-bottom: 6px;
        }
        .cat-card-body p {
            color: var(--text-muted);
            font-size: 15px;
            max-width: 340px;
        }
        .cat-card-body .card-link {
            margin-top: 10px;
        }

        /* ===== 最新资讯列表 ===== */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .news-item {
            display: flex;
            gap: 20px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-card);
            padding: 16px;
            transition: var(--transition);
        }
        .news-item:hover {
            border-color: rgba(240, 165, 0, 0.20);
            transform: translateX(4px);
            box-shadow: var(--shadow-sm);
        }
        .news-item img {
            width: 120px;
            height: 84px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
        }
        .news-info {
            flex: 1;
            min-width: 0;
        }
        .news-info .meta {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 6px;
        }
        .news-info .meta span {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .news-info .meta .category {
            color: var(--accent);
            font-weight: 600;
        }
        .news-info h4 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 4px;
            line-height: 1.4;
        }
        .news-info p {
            font-size: 14px;
            color: var(--text-muted);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-info a {
            color: inherit;
        }
        .news-info a:hover h4 {
            color: var(--accent-light);
        }
        .empty-news {
            text-align: center;
            padding: 48px 24px;
            color: var(--text-muted);
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px dashed var(--border-subtle);
        }
        .empty-news i {
            font-size: 40px;
            margin-bottom: 16px;
            opacity: 0.5;
        }

        /* ===== 特色功能 ===== */
        .feature-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }
        .feature-img {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }
        .feature-img img {
            width: 100%;
            display: block;
        }
        .feature-text h3 {
            font-size: 30px;
            font-weight: 800;
            margin-bottom: 16px;
        }
        .feature-text p {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 20px;
        }
        .feature-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 15px;
            color: var(--text-body);
        }
        .feature-list li i {
            color: var(--accent);
            font-size: 18px;
            margin-top: 2px;
            flex-shrink: 0;
        }
        .section-dark .feature-list li {
            color: var(--text-muted);
        }
        @media (max-width: 768px) {
            .feature-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .feature-img {
                order: -1;
            }
        }

        /* ===== 流程步骤 ===== */
        .steps {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
            counter-reset: step;
        }
        .step-card {
            text-align: center;
            padding: 32px 20px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-card);
            transition: var(--transition);
            position: relative;
        }
        .step-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .step-card .step-num {
            font-size: 48px;
            font-weight: 900;
            color: rgba(240, 165, 0, 0.12);
            line-height: 1;
            margin-bottom: 8px;
            font-family: 'Georgia', serif;
        }
        .step-card .icon {
            font-size: 36px;
            color: var(--accent);
            margin-bottom: 16px;
        }
        .step-card h4 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 8px;
        }
        .step-card p {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.6;
        }
        @media (max-width: 768px) {
            .steps {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }

        /* ===== 数据统计 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-card {
            text-align: center;
            padding: 32px 16px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-card);
            transition: var(--transition);
        }
        .stat-card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-sm);
        }
        .stat-card .num {
            font-size: 40px;
            font-weight: 900;
            color: var(--accent-light);
            line-height: 1.1;
        }
        .stat-card .num span {
            font-size: 24px;
            opacity: 0.7;
        }
        .stat-card .label {
            font-size: 15px;
            color: var(--text-muted);
            margin-top: 8px;
        }
        .stat-card .icon {
            font-size: 28px;
            color: var(--secondary-light);
            margin-bottom: 12px;
        }
        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
        }
        @media (max-width: 520px) {
            .stats-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(240, 165, 0, 0.15);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-light);
            cursor: pointer;
            transition: var(--transition);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            gap: 16px;
        }
        .faq-question i {
            font-size: 18px;
            color: var(--accent);
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }
        .faq-question.open i {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 24px 18px;
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.7;
            display: none;
        }
        .faq-answer.open {
            display: block;
        }
        .faq-item-light {
            background: var(--bg-white);
            border-color: #e8e6e0;
        }
        .faq-item-light .faq-question {
            color: var(--text-dark);
        }
        .faq-item-light .faq-answer {
            color: var(--text-body);
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--bg-dark);
            position: relative;
            overflow: hidden;
            padding: 80px 0;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.12;
            z-index: 0;
        }
        .cta-content {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 700px;
            margin: 0 auto;
        }
        .cta-content h2 {
            font-size: 40px;
            font-weight: 900;
            color: var(--text-light);
            margin-bottom: 16px;
        }
        .cta-content p {
            font-size: 18px;
            color: var(--text-muted);
            margin-bottom: 32px;
            line-height: 1.6;
        }
        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--primary-dark);
            border-top: 1px solid var(--border-subtle);
            padding: 48px 0 24px;
            color: var(--text-muted);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-brand .logo {
            font-size: 22px;
            font-weight: 800;
            color: var(--text-light);
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 12px;
        }
        .footer-brand .logo i {
            color: var(--accent);
        }
        .footer-brand .logo span {
            background: linear-gradient(135deg, var(--accent-light), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            max-width: 300px;
        }
        .footer-col h5 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 16px;
        }
        .footer-col a {
            display: block;
            font-size: 14px;
            color: var(--text-muted);
            padding: 4px 0;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: var(--accent-light);
            padding-left: 4px;
        }
        .footer-col a i {
            margin-right: 6px;
            font-size: 12px;
            color: var(--accent);
        }
        .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--text-muted);
        }
        .footer-bottom a:hover {
            color: var(--accent-light);
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-muted);
            transition: var(--transition);
        }
        .footer-social a:hover {
            background: var(--accent);
            color: var(--primary-dark);
            transform: scale(1.1);
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== 响应式微调 ===== */
        @media (max-width: 1024px) {
            .hero h1 {
                font-size: 44px;
            }
            .section-title {
                font-size: 32px;
            }
            .nav-search input {
                width: 140px;
            }
            .nav-search input:focus {
                width: 180px;
            }
        }
        @media (max-width: 768px) {
            .site-header .nav-right .nav-search,
            .site-header .nav-right .nav-cta {
                display: none;
            }
            .mobile-toggle {
                display: block;
            }
            .nav-tabs-wrap {
                display: none;
            }
            .hero {
                min-height: 70vh;
                padding: 100px 16px 60px;
            }
            .hero h1 {
                font-size: 34px;
            }
            .hero-sub {
                font-size: 17px;
            }
            .hero-stats {
                gap: 24px;
            }
            .hero-stat .num {
                font-size: 26px;
            }
            .section {
                padding: 56px 0;
            }
            .section-title {
                font-size: 26px;
            }
            .section-sub {
                font-size: 16px;
                margin-bottom: 32px;
            }
            .news-item {
                flex-direction: column;
            }
            .news-item img {
                width: 100%;
                height: 160px;
            }
            .cta-content h2 {
                font-size: 30px;
            }
            .cat-card {
                min-height: 200px;
            }
            .feature-text h3 {
                font-size: 24px;
            }
        }
        @media (max-width: 520px) {
            .hero h1 {
                font-size: 28px;
            }
            .hero-actions {
                flex-direction: column;
                width: 100%;
            }
            .hero-actions .btn-primary,
            .hero-actions .btn-secondary {
                width: 100%;
                justify-content: center;
            }
            .section-title {
                font-size: 22px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
            }
            .stat-card .num {
                font-size: 30px;
            }
        }

        /* ===== 实用工具 ===== */
        .mt-8 {
            margin-top: 8px;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mt-32 {
            margin-top: 32px;
        }
        .mb-8 {
            margin-bottom: 8px;
        }
        .mb-16 {
            margin-bottom: 16px;
        }
        .mb-24 {
            margin-bottom: 24px;
        }
        .gap-8 {
            gap: 8px;
        }
        .gap-16 {
            gap: 16px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .text-accent {
            color: var(--accent);
        }
        .text-muted {
            color: var(--text-muted);
        }

        /* ===== 滚动条美化 ===== */
        ::-webkit-scrollbar {
            width: 8px;
            height: 8px;
        }
        ::-webkit-scrollbar-track {
            background: var(--primary-dark);
        }
        ::-webkit-scrollbar-thumb {
            background: rgba(255, 255, 255, 0.12);
            border-radius: 4px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: rgba(255, 255, 255, 0.20);
        }

        /* ===== 加载动画 ===== */
        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .animate-in {
            animation: fadeUp 0.6s ease forwards;
        }
        .delay-1 {
            animation-delay: 0.1s;
        }
        .delay-2 {
            animation-delay: 0.2s;
        }
        .delay-3 {
            animation-delay: 0.3s;
        }
        .delay-4 {
            animation-delay: 0.4s;
        }

/* roulang page: article */
/* ============================================
               :root 设计变量
            ============================================ */
        :root {
            --primary: #1a2a6c;
            --primary-light: #2d4a8e;
            --primary-dark: #0f1a4a;
            --secondary: #e8a87c;
            --secondary-light: #f0c8a8;
            --accent: #4fc3f7;
            --accent-dark: #0288d1;
            --bg-body: #f8f9fc;
            --bg-white: #ffffff;
            --bg-light: #f0f2f8;
            --bg-dark: #0d1b2a;
            --text-primary: #1a1a2e;
            --text-secondary: #4a4a6a;
            --text-light: #8a8aaa;
            --text-white: #ffffff;
            --border: #e0e4f0;
            --border-light: #eef0f6;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(26, 42, 108, 0.06);
            --shadow-md: 0 6px 24px rgba(26, 42, 108, 0.10);
            --shadow-lg: 0 16px 48px rgba(26, 42, 108, 0.14);
            --shadow-xl: 0 24px 64px rgba(26, 42, 108, 0.18);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --container-max: 1200px;
            --header-h: 72px;
            --nav-h: 52px;
        }

        /* ============================================
               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-primary);
            background: var(--bg-body);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover,
        a:focus {
            color: var(--primary);
        }
        a:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 2px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-md);
        }
        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
        }
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 2px;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            color: var(--text-primary);
            font-weight: 700;
        }
        p {
            margin-bottom: 1rem;
            color: var(--text-secondary);
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ============================================
               Header & 导航 (频道 Tabs 双层)
            ============================================ */
        .site-header {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow-sm);
        }
        .header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-h);
            padding: 0 24px;
            max-width: var(--container-max);
            margin: 0 auto;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.5px;
        }
        .logo i {
            font-size: 1.8rem;
            color: var(--secondary);
        }
        .logo span {
            background: linear-gradient(135deg, var(--primary), var(--accent-dark));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .header-search {
            display: flex;
            align-items: center;
            background: var(--bg-light);
            border-radius: 40px;
            padding: 0 16px;
            height: 40px;
            border: 1px solid transparent;
            transition: var(--transition);
            min-width: 200px;
        }
        .header-search:focus-within {
            border-color: var(--accent);
            background: var(--bg-white);
            box-shadow: 0 0 0 4px rgba(79, 195, 247, 0.12);
        }
        .header-search i {
            color: var(--text-light);
            font-size: 0.95rem;
            margin-right: 8px;
        }
        .header-search input {
            background: transparent;
            border: none;
            width: 100%;
            height: 100%;
            color: var(--text-primary);
            font-size: 0.9rem;
        }
        .header-search input::placeholder {
            color: var(--text-light);
        }
        .header-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 20px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: var(--text-white);
            border-radius: 40px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition);
            box-shadow: 0 4px 12px rgba(26, 42, 108, 0.25);
        }
        .header-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(26, 42, 108, 0.35);
            color: var(--text-white);
        }
        .header-cta i {
            font-size: 0.85rem;
        }

        /* 第二层：频道 Tabs */
        .nav-tabs {
            display: flex;
            align-items: center;
            gap: 4px;
            padding: 0 24px;
            max-width: var(--container-max);
            margin: 0 auto;
            height: var(--nav-h);
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }
        .nav-tabs::-webkit-scrollbar {
            display: none;
        }
        .nav-tabs a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 18px;
            border-radius: 40px;
            font-size: 0.88rem;
            font-weight: 500;
            color: var(--text-secondary);
            white-space: nowrap;
            transition: var(--transition);
            border: 1px solid transparent;
        }
        .nav-tabs a i {
            font-size: 0.85rem;
            color: var(--text-light);
            transition: var(--transition);
        }
        .nav-tabs a:hover {
            background: var(--bg-light);
            color: var(--primary);
        }
        .nav-tabs a:hover i {
            color: var(--primary);
        }
        .nav-tabs a.active {
            background: var(--primary);
            color: var(--text-white);
            border-color: var(--primary);
            box-shadow: 0 4px 12px rgba(26, 42, 108, 0.20);
        }
        .nav-tabs a.active i {
            color: var(--text-white);
        }
        .nav-tabs a:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 2px;
        }

        /* 移动端菜单按钮 */
        .menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--primary);
            cursor: pointer;
            padding: 4px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .menu-toggle:hover {
            background: var(--bg-light);
        }

        /* ============================================
               Banner / 文章页头部
            ============================================ */
        .article-banner {
            position: relative;
            padding: 80px 0 56px;
            background: var(--bg-dark);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            color: var(--text-white);
            min-height: 280px;
            display: flex;
            align-items: center;
        }
        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13, 27, 42, 0.88) 0%, rgba(26, 42, 108, 0.72) 100%);
            z-index: 1;
        }
        .article-banner .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .article-banner .breadcrumb {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 20px;
        }
        .article-banner .breadcrumb a {
            color: rgba(255, 255, 255, 0.85);
            transition: var(--transition);
        }
        .article-banner .breadcrumb a:hover {
            color: var(--secondary);
        }
        .article-banner .breadcrumb i {
            font-size: 0.75rem;
        }
        .article-banner h1 {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--text-white);
            max-width: 860px;
            margin: 0 auto 16px;
            line-height: 1.3;
            letter-spacing: -0.5px;
        }
        .article-banner .meta {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 20px;
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.75);
            flex-wrap: wrap;
        }
        .article-banner .meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .article-banner .meta i {
            font-size: 0.85rem;
            color: var(--secondary);
        }
        .article-banner .category-tag {
            display: inline-block;
            padding: 4px 16px;
            background: var(--secondary);
            color: var(--primary-dark);
            border-radius: 40px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.5px;
        }

        /* ============================================
               Main 内容区
            ============================================ */
        .article-main {
            padding: 48px 0 64px;
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 48px;
            align-items: start;
        }
        .article-body {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 40px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
        }
        .article-body .featured-image {
            width: 100%;
            border-radius: var(--radius-md);
            margin-bottom: 32px;
            object-fit: cover;
            max-height: 480px;
        }
        .article-body .content {
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--text-secondary);
        }
        .article-body .content p {
            margin-bottom: 1.4rem;
        }
        .article-body .content h2,
        .article-body .content h3,
        .article-body .content h4 {
            margin-top: 2rem;
            margin-bottom: 1rem;
            color: var(--text-primary);
        }
        .article-body .content h2 {
            font-size: 1.6rem;
            border-bottom: 2px solid var(--border-light);
            padding-bottom: 8px;
        }
        .article-body .content h3 {
            font-size: 1.3rem;
        }
        .article-body .content ul,
        .article-body .content ol {
            padding-left: 1.6rem;
            margin-bottom: 1.4rem;
        }
        .article-body .content ul li {
            list-style: disc;
            margin-bottom: 0.4rem;
        }
        .article-body .content ol li {
            list-style: decimal;
            margin-bottom: 0.4rem;
        }
        .article-body .content blockquote {
            border-left: 4px solid var(--secondary);
            padding: 16px 24px;
            background: var(--bg-light);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 1.6rem 0;
            font-style: italic;
            color: var(--text-secondary);
        }
        .article-body .content img {
            border-radius: var(--radius-md);
            margin: 1.6rem 0;
        }
        .article-body .content a {
            color: var(--accent-dark);
            text-decoration: underline;
            text-underline-offset: 2px;
        }
        .article-body .content a:hover {
            color: var(--primary);
        }
        .article-body .tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 32px;
            padding-top: 24px;
            border-top: 1px solid var(--border-light);
        }
        .article-body .tags .tag {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 4px 14px;
            background: var(--bg-light);
            border-radius: 40px;
            font-size: 0.82rem;
            color: var(--text-secondary);
            transition: var(--transition);
            border: 1px solid var(--border-light);
        }
        .article-body .tags .tag:hover {
            background: var(--primary);
            color: var(--text-white);
            border-color: var(--primary);
        }
        .article-body .tags .tag i {
            font-size: 0.75rem;
        }

        /* 侧边栏 */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 32px;
        }
        .sidebar-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
        }
        .sidebar-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--primary);
        }
        .sidebar-card h4 i {
            font-size: 1rem;
            color: var(--secondary);
        }
        .sidebar-card .card-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .sidebar-card .card-list a {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 10px 12px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            background: var(--bg-light);
            border: 1px solid transparent;
        }
        .sidebar-card .card-list a:hover {
            background: var(--bg-white);
            border-color: var(--border);
            box-shadow: var(--shadow-sm);
            transform: translateX(4px);
        }
        .sidebar-card .card-list a img {
            width: 60px;
            height: 60px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
        }
        .sidebar-card .card-list a .info {
            flex: 1;
            min-width: 0;
        }
        .sidebar-card .card-list a .info .title-sm {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-primary);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            line-height: 1.4;
        }
        .sidebar-card .card-list a .info .date-sm {
            font-size: 0.78rem;
            color: var(--text-light);
            margin-top: 4px;
        }
        .sidebar-cta {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: var(--text-white);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            text-align: center;
        }
        .sidebar-cta h4 {
            color: var(--text-white);
            font-size: 1.2rem;
            margin-bottom: 12px;
        }
        .sidebar-cta p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 0.92rem;
            margin-bottom: 20px;
        }
        .sidebar-cta .button {
            background: var(--secondary);
            color: var(--primary-dark);
            border-radius: 40px;
            padding: 12px 28px;
            font-weight: 700;
            transition: var(--transition);
            border: none;
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-cta .button:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
        }

        /* ============================================
               CTA 区域
            ============================================ */
        .article-cta {
            padding: 64px 0;
            background: var(--bg-dark);
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            position: relative;
        }
        .article-cta::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13, 27, 42, 0.9) 0%, rgba(26, 42, 108, 0.75) 100%);
            z-index: 1;
        }
        .article-cta .container {
            position: relative;
            z-index: 2;
            text-align: center;
            color: var(--text-white);
        }
        .article-cta h2 {
            font-size: 2rem;
            color: var(--text-white);
            margin-bottom: 16px;
        }
        .article-cta p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 1.05rem;
            max-width: 640px;
            margin: 0 auto 28px;
        }
        .article-cta .button-group {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .article-cta .button.primary {
            background: var(--secondary);
            color: var(--primary-dark);
            padding: 14px 36px;
            border-radius: 40px;
            font-weight: 700;
            font-size: 1rem;
            transition: var(--transition);
            border: none;
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .article-cta .button.primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 32px rgba(232, 168, 124, 0.35);
        }
        .article-cta .button.outline {
            background: transparent;
            color: var(--text-white);
            border: 2px solid rgba(255, 255, 255, 0.5);
            padding: 12px 32px;
            border-radius: 40px;
            font-weight: 600;
            transition: var(--transition);
        }
        .article-cta .button.outline:hover {
            border-color: var(--text-white);
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-3px);
        }

        /* ============================================
               Footer（沿用首页结构）
            ============================================ */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 64px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand .logo {
            font-size: 1.5rem;
            margin-bottom: 16px;
        }
        .footer-brand .logo i {
            color: var(--secondary);
        }
        .footer-brand .logo span {
            background: linear-gradient(135deg, #ffffff, var(--secondary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .footer-brand p {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.92rem;
            line-height: 1.7;
            max-width: 400px;
        }
        .footer-col h5 {
            color: var(--text-white);
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .footer-col a {
            display: flex;
            align-items: center;
            gap: 8px;
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            padding: 5px 0;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: var(--secondary);
            transform: translateX(4px);
        }
        .footer-col a i {
            font-size: 0.8rem;
            width: 18px;
            color: var(--secondary);
        }
        .footer-social {
            display: flex;
            gap: 12px;
            margin-top: 12px;
        }
        .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            color: rgba(255, 255, 255, 0.7);
            font-size: 1.1rem;
            transition: var(--transition);
            border: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-social a:hover {
            background: var(--secondary);
            color: var(--primary-dark);
            transform: translateY(-3px);
            border-color: var(--secondary);
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 24px 0;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom span:last-child {
            color: rgba(255, 255, 255, 0.25);
            font-style: italic;
        }
        .mt-16 {
            margin-top: 16px;
        }

        /* ============================================
               错误 / 未找到 状态
            ============================================ */
        .not-found-box {
            text-align: center;
            padding: 80px 24px;
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
        }
        .not-found-box i {
            font-size: 4rem;
            color: var(--text-light);
            margin-bottom: 20px;
        }
        .not-found-box h2 {
            font-size: 1.8rem;
            color: var(--text-primary);
            margin-bottom: 12px;
        }
        .not-found-box p {
            color: var(--text-secondary);
            font-size: 1.05rem;
            max-width: 480px;
            margin: 0 auto 24px;
        }
        .not-found-box .button {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            background: var(--primary);
            color: var(--text-white);
            border-radius: 40px;
            font-weight: 600;
            transition: var(--transition);
        }
        .not-found-box .button:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        /* ============================================
               响应式断点
            ============================================ */
        @media screen and (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr;
            }
            .article-sidebar {
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .article-banner h1 {
                font-size: 2rem;
            }
        }

        @media screen and (max-width: 768px) {
            .header-top {
                padding: 0 16px;
                height: 64px;
            }
            .header-search {
                min-width: 140px;
                height: 36px;
            }
            .header-search input {
                font-size: 0.82rem;
            }
            .header-cta span {
                display: none;
            }
            .header-cta {
                padding: 8px 14px;
            }
            .menu-toggle {
                display: block;
            }
            .nav-tabs {
                display: none;
                flex-direction: column;
                background: var(--bg-white);
                padding: 12px 16px;
                height: auto;
                border-top: 1px solid var(--border-light);
                box-shadow: var(--shadow-md);
                position: absolute;
                top: 64px;
                left: 0;
                right: 0;
                z-index: 999;
                gap: 6px;
            }
            .nav-tabs.open {
                display: flex;
            }
            .nav-tabs a {
                width: 100%;
                padding: 10px 16px;
                border-radius: var(--radius-sm);
            }
            .nav-tabs a.active {
                background: var(--primary);
            }

            .article-banner {
                padding: 48px 0 36px;
                min-height: 200px;
            }
            .article-banner h1 {
                font-size: 1.5rem;
            }
            .article-banner .meta {
                font-size: 0.82rem;
                gap: 12px;
            }

            .article-body {
                padding: 24px 20px;
            }
            .article-body .content {
                font-size: 0.96rem;
            }

            .article-sidebar {
                grid-template-columns: 1fr;
            }

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

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 6px;
            }
        }

        @media screen and (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .header-top {
                padding: 0 12px;
                height: 58px;
            }
            .logo {
                font-size: 1.2rem;
            }
            .logo i {
                font-size: 1.4rem;
            }
            .header-search {
                min-width: 100px;
                padding: 0 10px;
            }
            .header-search input {
                font-size: 0.78rem;
            }
            .article-banner h1 {
                font-size: 1.25rem;
            }
            .article-body {
                padding: 20px 16px;
                border-radius: var(--radius-md);
            }
            .article-body .featured-image {
                max-height: 220px;
            }
            .article-cta .button.primary,
            .article-cta .button.outline {
                width: 100%;
                justify-content: center;
            }
            .sidebar-card {
                padding: 20px 16px;
            }
            .not-found-box {
                padding: 40px 16px;
            }
            .not-found-box i {
                font-size: 2.8rem;
            }
        }

        /* Foundation 覆盖：按钮统一样式 */
        .button {
            transition: var(--transition);
            font-weight: 600;
        }
        .button:hover {
            transform: translateY(-2px);
        }
        .button.primary {
            background: var(--primary);
        }
        .button.primary:hover {
            background: var(--primary-light);
        }
        .button.secondary {
            background: var(--secondary);
            color: var(--primary-dark);
        }
        .button.secondary:hover {
            background: var(--secondary-light);
        }

        /* 小工具 */
        .text-center {
            text-align: center;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mt-32 {
            margin-top: 32px;
        }
        .mb-24 {
            margin-bottom: 24px;
        }
        .mb-32 {
            margin-bottom: 32px;
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a2a4a;
            --primary-light: #2c4a7c;
            --primary-dark: #0f1a30;
            --accent: #f5b342;
            --accent-light: #f8c96a;
            --accent-dark: #d4922a;
            --bg-body: #f4f6fa;
            --bg-card: #ffffff;
            --bg-dark: #0b1424;
            --text-primary: #1a2a4a;
            --text-secondary: #4a5a7a;
            --text-light: #8a9ab0;
            --text-white: #f0f4ff;
            --border-color: #e0e6ef;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(26, 42, 74, 0.06);
            --shadow-md: 0 8px 24px rgba(26, 42, 74, 0.10);
            --shadow-lg: 0 16px 48px rgba(26, 42, 74, 0.14);
            --transition: 0.25s ease;
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            --max-width: 1200px;
            --header-h: 72px;
            --nav-tabs-h: 52px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font-sans);
            background: var(--bg-body);
            color: var(--text-primary);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a { color: var(--primary-light); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--accent); }
        img { max-width: 100%; height: auto; display: block; }
        button, input, textarea { font-family: inherit; font-size: inherit; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--text-primary); }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .section-pad { padding: 80px 0; }
        .section-title {
            font-size: 2.2rem;
            text-align: center;
            margin-bottom: 12px;
            letter-spacing: -0.02em;
        }
        .section-sub {
            text-align: center;
            color: var(--text-secondary);
            font-size: 1.1rem;
            max-width: 640px;
            margin: 0 auto 48px;
        }
        .mt-16 { margin-top: 16px; }
        .mb-16 { margin-bottom: 16px; }

        /* ===== Foundation 覆盖 ===== */
        .grid-container { max-width: var(--max-width); padding: 0 24px; }
        .grid-x { margin: 0 -16px; }
        .cell { padding: 0 16px; }

        /* ===== 头部导航 (双层) ===== */
        .site-header {
            background: var(--bg-dark);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 20px rgba(0,0,0,0.3);
        }
        .header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-h);
            padding: 0 24px;
            max-width: var(--max-width);
            margin: 0 auto;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-white);
            font-size: 1.4rem;
            font-weight: 700;
            letter-spacing: 0.5px;
        }
        .logo i { color: var(--accent); font-size: 1.6rem; }
        .logo span { background: linear-gradient(135deg, #f5b342, #f8d06a); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .header-actions .search-box {
            display: flex;
            align-items: center;
            background: rgba(255,255,255,0.10);
            border-radius: 24px;
            padding: 4px 12px 4px 16px;
            border: 1px solid rgba(255,255,255,0.08);
            transition: var(--transition);
        }
        .header-actions .search-box:focus-within { border-color: var(--accent); background: rgba(255,255,255,0.15); }
        .header-actions .search-box input {
            background: transparent;
            border: none;
            outline: none;
            color: var(--text-white);
            padding: 6px 0;
            width: 140px;
            font-size: 0.9rem;
        }
        .header-actions .search-box input::placeholder { color: var(--text-light); }
        .header-actions .search-box button {
            background: transparent;
            border: none;
            color: var(--text-light);
            cursor: pointer;
            padding: 6px 4px;
            transition: var(--transition);
        }
        .header-actions .search-box button:hover { color: var(--accent); }
        .header-actions .cta-btn {
            background: var(--accent);
            color: var(--primary-dark);
            padding: 8px 20px;
            border-radius: 24px;
            font-weight: 600;
            font-size: 0.9rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
        }
        .header-actions .cta-btn:hover { background: var(--accent-light); transform: translateY(-1px); box-shadow: 0 4px 16px rgba(245, 179, 66, 0.3); }

        /* 导航 Tabs 行 */
        .nav-tabs-wrap {
            background: rgba(15, 26, 48, 0.9);
            border-top: 1px solid rgba(255,255,255,0.06);
        }
        .nav-tabs {
            display: flex;
            align-items: center;
            gap: 4px;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            height: var(--nav-tabs-h);
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }
        .nav-tabs::-webkit-scrollbar { display: none; }
        .nav-tabs a {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 8px 20px;
            border-radius: 24px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-light);
            background: transparent;
            white-space: nowrap;
            transition: var(--transition);
            border: 1px solid transparent;
        }
        .nav-tabs a i { font-size: 0.95rem; }
        .nav-tabs a:hover { color: var(--text-white); background: rgba(255,255,255,0.08); border-color: rgba(255,255,255,0.10); }
        .nav-tabs a.active {
            color: var(--primary-dark);
            background: var(--accent);
            border-color: var(--accent);
            font-weight: 600;
        }
        .nav-tabs a.active:hover { background: var(--accent-light); color: var(--primary-dark); }

        /* ===== Hero / 分类 Banner ===== */
        .category-hero {
            position: relative;
            min-height: 380px;
            display: flex;
            align-items: center;
            background: var(--bg-dark);
            overflow: hidden;
        }
        .category-hero .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.40;
            transform: scale(1.05);
        }
        .category-hero .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11, 20, 36, 0.92) 0%, rgba(26, 42, 74, 0.70) 100%);
        }
        .category-hero .hero-content {
            position: relative;
            z-index: 2;
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 60px 24px;
            text-align: center;
        }
        .category-hero .hero-content h1 {
            font-size: 3.2rem;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: -0.02em;
            text-shadow: 0 2px 20px rgba(0,0,0,0.3);
        }
        .category-hero .hero-content h1 i { color: var(--accent); margin-right: 12px; }
        .category-hero .hero-content p {
            font-size: 1.2rem;
            color: rgba(255,255,255,0.80);
            max-width: 640px;
            margin: 0 auto 32px;
            line-height: 1.8;
        }
        .category-hero .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        .category-hero .hero-actions .btn-primary {
            background: var(--accent);
            color: var(--primary-dark);
            padding: 14px 36px;
            border-radius: 30px;
            font-weight: 700;
            font-size: 1.05rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .category-hero .hero-actions .btn-primary:hover { background: var(--accent-light); transform: translateY(-2px); box-shadow: 0 8px 30px rgba(245, 179, 66, 0.3); }
        .category-hero .hero-actions .btn-outline {
            background: transparent;
            color: var(--text-white);
            padding: 14px 36px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 1.05rem;
            border: 2px solid rgba(255,255,255,0.30);
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .category-hero .hero-actions .btn-outline:hover { border-color: var(--accent); color: var(--accent); background: rgba(245, 179, 66, 0.08); }

        /* ===== 面包屑 ===== */
        .breadcrumbs {
            background: transparent;
            padding: 16px 0 0;
            font-size: 0.9rem;
            color: var(--text-light);
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        .breadcrumbs a { color: var(--text-light); }
        .breadcrumbs a:hover { color: var(--accent); }
        .breadcrumbs span { color: var(--text-secondary); }

        /* ===== 卡片通用 ===== */
        .card-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
            border: 1px solid var(--border-color);
        }
        .card-item:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .card-item .card-img {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            display: block;
        }
        .card-item .card-body { padding: 20px 22px 24px; flex: 1; display: flex; flex-direction: column; }
        .card-item .card-body h3 { font-size: 1.2rem; margin-bottom: 8px; }
        .card-item .card-body h3 a { color: var(--text-primary); }
        .card-item .card-body h3 a:hover { color: var(--primary-light); }
        .card-item .card-body p { color: var(--text-secondary); font-size: 0.95rem; line-height: 1.7; flex: 1; }
        .card-item .card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-top: 14px;
            font-size: 0.85rem;
            color: var(--text-light);
            border-top: 1px solid var(--border-color);
            padding-top: 14px;
        }
        .card-item .card-meta i { margin-right: 4px; }
        .card-item .badge {
            display: inline-block;
            background: rgba(245, 179, 66, 0.15);
            color: var(--accent-dark);
            padding: 2px 12px;
            border-radius: 12px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 8px;
        }

        /* ===== 观测入门 (图文块) ===== */
        .intro-block {
            display: flex;
            flex-wrap: wrap;
            gap: 48px;
            align-items: center;
        }
        .intro-block .intro-img {
            flex: 1 1 380px;
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-md);
        }
        .intro-block .intro-img img { width: 100%; display: block; }
        .intro-block .intro-text { flex: 1 1 380px; }
        .intro-block .intro-text h2 { font-size: 2rem; margin-bottom: 16px; }
        .intro-block .intro-text h2 i { color: var(--accent); margin-right: 8px; }
        .intro-block .intro-text p { color: var(--text-secondary); font-size: 1.05rem; line-height: 1.8; margin-bottom: 16px; }
        .intro-block .intro-text ul { margin-top: 12px; }
        .intro-block .intro-text ul li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            padding: 6px 0;
            color: var(--text-secondary);
        }
        .intro-block .intro-text ul li i { color: var(--accent); margin-top: 4px; flex-shrink: 0; }

        /* ===== 列表条目 ===== */
        .list-item {
            display: flex;
            gap: 20px;
            padding: 20px 0;
            border-bottom: 1px solid var(--border-color);
            align-items: flex-start;
        }
        .list-item:last-child { border-bottom: none; }
        .list-item .num {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary);
            color: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.2rem;
        }
        .list-item .num.accent { background: var(--accent); color: var(--primary-dark); }
        .list-item .content h4 { font-size: 1.1rem; margin-bottom: 4px; }
        .list-item .content p { color: var(--text-secondary); font-size: 0.95rem; }

        /* ===== 地点网格 ===== */
        .loc-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--border-color);
            height: 100%;
        }
        .loc-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .loc-card .loc-img { width: 100%; aspect-ratio: 16/9; object-fit: cover; display: block; }
        .loc-card .loc-body { padding: 18px 20px 22px; }
        .loc-card .loc-body h4 { font-size: 1.1rem; margin-bottom: 6px; }
        .loc-card .loc-body p { color: var(--text-secondary); font-size: 0.9rem; line-height: 1.7; }
        .loc-card .loc-body .loc-tag {
            display: inline-block;
            background: rgba(26, 42, 74, 0.08);
            color: var(--text-secondary);
            padding: 2px 12px;
            border-radius: 12px;
            font-size: 0.8rem;
            margin-top: 10px;
        }

        /* ===== FAQ ===== */
        .faq-list { max-width: 800px; margin: 0 auto; }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            margin-bottom: 16px;
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { box-shadow: var(--shadow-md); }
        .faq-item .faq-q {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1.05rem;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            background: var(--bg-card);
            transition: var(--transition);
            user-select: none;
        }
        .faq-item .faq-q i { color: var(--accent); transition: transform var(--transition); }
        .faq-item.active .faq-q i { transform: rotate(180deg); }
        .faq-item .faq-a {
            padding: 0 24px 18px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.8;
            display: none;
        }
        .faq-item.active .faq-a { display: block; }

        /* ===== CTA 区块 ===== */
        .cta-block {
            background: var(--bg-dark);
            position: relative;
            overflow: hidden;
            text-align: center;
            padding: 80px 24px;
        }
        .cta-block .cta-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.15;
        }
        .cta-block .cta-content { position: relative; z-index: 2; max-width: 640px; margin: 0 auto; }
        .cta-block h2 { font-size: 2.4rem; color: var(--text-white); margin-bottom: 16px; }
        .cta-block p { color: rgba(255,255,255,0.75); font-size: 1.1rem; margin-bottom: 32px; }
        .cta-block .btn-cta {
            background: var(--accent);
            color: var(--primary-dark);
            padding: 16px 44px;
            border-radius: 30px;
            font-weight: 700;
            font-size: 1.1rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .cta-block .btn-cta:hover { background: var(--accent-light); transform: translateY(-2px); box-shadow: 0 8px 32px rgba(245, 179, 66, 0.25); }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.75);
            padding: 60px 0 0;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
            gap: 40px;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .site-footer .footer-brand .logo { font-size: 1.3rem; margin-bottom: 12px; }
        .site-footer .footer-brand p { font-size: 0.92rem; line-height: 1.8; color: rgba(255,255,255,0.6); max-width: 300px; }
        .site-footer .footer-col h5 { font-size: 1rem; color: var(--text-white); margin-bottom: 16px; font-weight: 600; }
        .site-footer .footer-col a {
            display: block;
            color: rgba(255,255,255,0.6);
            font-size: 0.9rem;
            padding: 4px 0;
            transition: var(--transition);
        }
        .site-footer .footer-col a:hover { color: var(--accent); padding-left: 4px; }
        .site-footer .footer-col a i { width: 20px; margin-right: 6px; }
        .site-footer .footer-social { display: flex; gap: 12px; margin-top: 12px; }
        .site-footer .footer-social a {
            width: 40px; height: 40px;
            border-radius: 50%;
            background: rgba(255,255,255,0.08);
            display: flex; align-items: center; justify-content: center;
            color: var(--text-light);
            font-size: 1.2rem;
            transition: var(--transition);
            padding: 0;
        }
        .site-footer .footer-social a:hover { background: var(--accent); color: var(--primary-dark); }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding: 20px 24px;
            margin-top: 40px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            max-width: var(--max-width);
            margin-left: auto;
            margin-right: auto;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.45);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .site-footer .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
            .category-hero .hero-content h1 { font-size: 2.6rem; }
        }
        @media (max-width: 768px) {
            .section-pad { padding: 56px 0; }
            .section-title { font-size: 1.8rem; }
            .section-sub { font-size: 1rem; margin-bottom: 32px; }
            .header-top { flex-wrap: wrap; height: auto; padding: 12px 16px; gap: 10px; }
            .header-actions { width: 100%; justify-content: flex-end; }
            .header-actions .search-box { flex: 1; max-width: 200px; }
            .header-actions .search-box input { width: 100%; }
            .nav-tabs { padding: 0 16px; gap: 2px; }
            .nav-tabs a { padding: 6px 14px; font-size: 0.82rem; }
            .category-hero { min-height: 280px; }
            .category-hero .hero-content h1 { font-size: 2rem; }
            .category-hero .hero-content p { font-size: 1rem; }
            .category-hero .hero-content { padding: 40px 16px; }
            .intro-block { flex-direction: column; gap: 24px; }
            .intro-block .intro-text h2 { font-size: 1.6rem; }
            .site-footer .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .site-footer .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
            .cta-block h2 { font-size: 1.8rem; }
            .faq-item .faq-q { font-size: 0.95rem; padding: 14px 18px; }
            .faq-item .faq-a { padding: 0 18px 14px; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .category-hero .hero-content h1 { font-size: 1.6rem; }
            .category-hero .hero-actions .btn-primary,
            .category-hero .hero-actions .btn-outline { padding: 10px 20px; font-size: 0.9rem; }
            .header-actions .cta-btn { padding: 6px 14px; font-size: 0.8rem; }
            .nav-tabs a { padding: 4px 10px; font-size: 0.78rem; gap: 4px; }
            .card-item .card-body { padding: 14px 16px 18px; }
        }

        /* ===== 工具类 ===== */
        .text-center { text-align: center; }
        .mb-24 { margin-bottom: 24px; }
        .mb-32 { margin-bottom: 32px; }
        .bg-light-alt { background: #eef1f7; }
        .bg-white { background: #ffffff; }
        .rounded-full { border-radius: 999px; }
        .gap-16 { gap: 16px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }

/* roulang page: category2 */
:root {
            --primary: #1a3a5c;
            --primary-light: #2a5a8c;
            --primary-dark: #0f2440;
            --accent: #e8a832;
            --accent-light: #f0c060;
            --accent-dark: #c48820;
            --bg-light: #f8f9fb;
            --bg-dark: #0a1628;
            --text-primary: #1a2a3a;
            --text-secondary: #4a5a6a;
            --text-light: #8a9aaa;
            --text-white: #f0f4f8;
            --border-light: #e2e6ed;
            --border-medium: #c8ced8;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(26, 58, 92, 0.06);
            --shadow-md: 0 8px 28px rgba(26, 58, 92, 0.10);
            --shadow-lg: 0 20px 50px rgba(26, 58, 92, 0.14);
            --transition: all 0.25s ease;
            --font-base: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            --container-max: 1200px;
            --nav-height: 64px;
            --tab-height: 48px;
        }

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

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

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

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }

        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        a:focus-visible {
            outline: 3px solid var(--accent-light);
            outline-offset: 2px;
            border-radius: 2px;
        }

        button,
        .button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

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

        .section-padding {
            padding: 80px 0;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--primary-dark);
            line-height: 1.25;
            margin-bottom: 12px;
            letter-spacing: -0.02em;
        }

        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 640px;
            line-height: 1.6;
        }

        .text-center {
            text-align: center;
        }
        .text-center .section-subtitle {
            margin: 0 auto 32px;
        }

        .mt-16 {
            margin-top: 16px;
        }
        .mb-16 {
            margin-bottom: 16px;
        }
        .mb-24 {
            margin-bottom: 24px;
        }
        .mb-32 {
            margin-bottom: 32px;
        }
        .mb-40 {
            margin-bottom: 40px;
        }

        /* ===== Foundation 覆盖 ===== */
        .grid-container {
            max-width: var(--container-max);
            padding-left: 24px;
            padding-right: 24px;
        }

        .grid-x {
            margin-left: -16px;
            margin-right: -16px;
        }
        .grid-x>.cell {
            padding-left: 16px;
            padding-right: 16px;
        }

        /* ===== 导航 ===== */
        .site-header {
            background: var(--bg-dark);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text-white);
            letter-spacing: 0.02em;
        }
        .logo i {
            color: var(--accent);
            font-size: 1.35rem;
        }
        .logo span {
            background: linear-gradient(135deg, #f0e8d0, var(--accent-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .logo:hover {
            opacity: 0.88;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .header-actions .search-toggle {
            background: none;
            border: none;
            color: var(--text-white);
            font-size: 1.1rem;
            cursor: pointer;
            padding: 6px 10px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .header-actions .search-toggle:hover {
            background: rgba(255, 255, 255, 0.08);
            color: var(--accent-light);
        }

        .nav-tabs-wrap {
            background: var(--primary-dark);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .nav-tabs {
            display: flex;
            align-items: center;
            gap: 4px;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 6px 24px;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: thin;
            scrollbar-color: rgba(255, 255, 255, 0.15) transparent;
        }
        .nav-tabs::-webkit-scrollbar {
            height: 4px;
        }
        .nav-tabs::-webkit-scrollbar-thumb {
            background: rgba(255, 255, 255, 0.15);
            border-radius: 4px;
        }
        .nav-tabs::-webkit-scrollbar-track {
            background: transparent;
        }

        .nav-tabs a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 18px;
            border-radius: 24px;
            font-size: 0.9rem;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.7);
            white-space: nowrap;
            transition: var(--transition);
            border: 1px solid transparent;
            flex-shrink: 0;
        }
        .nav-tabs a i {
            font-size: 0.9rem;
        }
        .nav-tabs a:hover {
            color: var(--text-white);
            background: rgba(255, 255, 255, 0.07);
            border-color: rgba(255, 255, 255, 0.08);
        }
        .nav-tabs a.active,
        .nav-tabs a:active {
            color: var(--bg-dark);
            background: var(--accent);
            border-color: var(--accent);
            font-weight: 600;
            box-shadow: 0 4px 14px rgba(232, 168, 50, 0.25);
        }
        .nav-tabs a.active i {
            color: var(--bg-dark);
        }
        .nav-tabs a:focus-visible {
            outline: 3px solid var(--accent-light);
            outline-offset: 2px;
        }

        /* ===== Hero / Banner ===== */
        .category-hero {
            position: relative;
            min-height: 380px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            background: var(--bg-dark);
            overflow: hidden;
        }
        .category-hero .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.45;
            transform: scale(1.02);
            transition: opacity 0.8s ease;
        }
        .category-hero .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(145deg, rgba(10, 22, 40, 0.88) 0%, rgba(26, 58, 92, 0.72) 100%);
        }
        .category-hero .hero-content {
            position: relative;
            z-index: 2;
            max-width: 780px;
            padding: 60px 24px;
        }
        .category-hero .hero-badge {
            display: inline-block;
            background: rgba(232, 168, 50, 0.18);
            color: var(--accent-light);
            font-size: 0.82rem;
            font-weight: 600;
            padding: 6px 20px;
            border-radius: 30px;
            letter-spacing: 0.04em;
            border: 1px solid rgba(232, 168, 50, 0.20);
            margin-bottom: 20px;
            backdrop-filter: blur(4px);
        }
        .category-hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.2;
            letter-spacing: -0.02em;
            margin-bottom: 16px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
        }
        .category-hero h1 i {
            color: var(--accent-light);
            margin-right: 10px;
        }
        .category-hero p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.8);
            line-height: 1.7;
            max-width: 600px;
            margin: 0 auto 28px;
        }
        .category-hero .hero-search {
            display: flex;
            max-width: 500px;
            margin: 0 auto;
            gap: 8px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 40px;
            padding: 4px;
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.10);
        }
        .category-hero .hero-search input {
            flex: 1;
            background: transparent;
            border: none;
            padding: 12px 20px;
            color: var(--text-white);
            font-size: 0.95rem;
            outline: none;
            min-width: 0;
        }
        .category-hero .hero-search input::placeholder {
            color: rgba(255, 255, 255, 0.45);
        }
        .category-hero .hero-search button {
            background: var(--accent);
            border: none;
            color: var(--bg-dark);
            padding: 10px 28px;
            border-radius: 32px;
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
        }
        .category-hero .hero-search button:hover {
            background: var(--accent-light);
            transform: scale(1.02);
        }
        .category-hero .hero-search button:focus-visible {
            outline: 3px solid var(--text-white);
            outline-offset: 2px;
        }

        /* ===== 知识分类介绍 ===== */
        .intro-section {
            background: var(--bg-light);
            border-bottom: 1px solid var(--border-light);
        }
        .intro-section .grid-x {
            align-items: center;
        }
        .intro-section .intro-image {
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-md);
            width: 100%;
            height: auto;
            object-fit: cover;
            aspect-ratio: 16/10;
        }
        .intro-section .intro-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 18px;
        }
        .intro-section .intro-tags .tag {
            background: rgba(26, 58, 92, 0.06);
            color: var(--primary-light);
            padding: 4px 16px;
            border-radius: 20px;
            font-size: 0.82rem;
            font-weight: 500;
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .intro-section .intro-tags .tag:hover {
            background: var(--primary);
            color: var(--text-white);
            border-color: var(--primary);
        }

        /* ===== 知识领域卡片 ===== */
        .knowledge-cards-section {
            background: var(--text-white);
        }
        .knowledge-card {
            background: var(--bg-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--border-light);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .knowledge-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }
        .knowledge-card .card-img {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
            display: block;
        }
        .knowledge-card .card-body {
            padding: 24px 22px 26px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .knowledge-card .card-body .card-icon {
            font-size: 1.8rem;
            color: var(--accent);
            margin-bottom: 10px;
        }
        .knowledge-card .card-body h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 8px;
            line-height: 1.3;
        }
        .knowledge-card .card-body p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 14px;
            flex: 1;
        }
        .knowledge-card .card-body .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.82rem;
            color: var(--text-light);
            border-top: 1px solid var(--border-light);
            padding-top: 14px;
            margin-top: auto;
        }
        .knowledge-card .card-body .card-meta i {
            margin-right: 4px;
        }
        .knowledge-card .card-body .card-link {
            color: var(--primary-light);
            font-weight: 600;
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }
        .knowledge-card .card-body .card-link:hover {
            color: var(--accent);
            gap: 10px;
        }

        /* ===== 热门知识排行 ===== */
        .hot-section {
            background: var(--bg-light);
        }
        .hot-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .hot-list li {
            display: flex;
            align-items: flex-start;
            gap: 18px;
            padding: 18px 0;
            border-bottom: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .hot-list li:last-child {
            border-bottom: none;
        }
        .hot-list li:hover {
            padding-left: 8px;
        }
        .hot-list .rank {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--border-medium);
            min-width: 42px;
            line-height: 1.2;
            transition: var(--transition);
        }
        .hot-list li:nth-child(1) .rank {
            color: var(--accent);
        }
        .hot-list li:nth-child(2) .rank {
            color: var(--accent-light);
        }
        .hot-list li:nth-child(3) .rank {
            color: #c8a050;
        }
        .hot-list .hot-content {
            flex: 1;
        }
        .hot-list .hot-content h4 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 4px;
        }
        .hot-list .hot-content p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.5;
            margin-bottom: 6px;
        }
        .hot-list .hot-content .hot-tag {
            display: inline-block;
            background: rgba(232, 168, 50, 0.10);
            color: var(--accent-dark);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 2px 12px;
            border-radius: 12px;
        }

        /* ===== 学习路径 ===== */
        .path-section {
            background: var(--bg-dark);
            color: var(--text-white);
        }
        .path-section .section-title {
            color: var(--text-white);
        }
        .path-section .section-subtitle {
            color: rgba(255, 255, 255, 0.65);
        }
        .path-steps {
            display: flex;
            flex-direction: column;
            gap: 28px;
            max-width: 720px;
            margin: 0 auto;
        }
        .path-step {
            display: flex;
            align-items: flex-start;
            gap: 20px;
            background: rgba(255, 255, 255, 0.04);
            border-radius: var(--radius-md);
            padding: 24px 28px;
            border: 1px solid rgba(255, 255, 255, 0.06);
            transition: var(--transition);
        }
        .path-step:hover {
            background: rgba(255, 255, 255, 0.07);
            border-color: rgba(232, 168, 50, 0.15);
            transform: translateX(6px);
        }
        .path-step .step-num {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            background: var(--accent);
            color: var(--bg-dark);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.2rem;
            box-shadow: 0 4px 14px rgba(232, 168, 50, 0.20);
        }
        .path-step .step-body h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 4px;
        }
        .path-step .step-body p {
            font-size: 0.92rem;
            color: rgba(255, 255, 255, 0.65);
            line-height: 1.6;
            margin: 0;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--text-white);
        }
        .faq-grid {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            margin-bottom: 14px;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border-medium);
            box-shadow: var(--shadow-sm);
        }
        .faq-item summary {
            padding: 18px 24px;
            font-size: 1.02rem;
            font-weight: 600;
            color: var(--text-primary);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            list-style: none;
            transition: var(--transition);
            user-select: none;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary::after {
            content: '\f107';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 1.1rem;
            color: var(--text-light);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item[open] summary::after {
            transform: rotate(180deg);
            color: var(--accent);
        }
        .faq-item summary:hover {
            background: rgba(26, 58, 92, 0.02);
        }
        .faq-item summary:focus-visible {
            outline: 3px solid var(--accent-light);
            outline-offset: -2px;
        }
        .faq-item .faq-answer {
            padding: 0 24px 20px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
            border-top: 1px solid var(--border-light);
            margin-top: 0;
            padding-top: 18px;
        }
        .faq-item .faq-answer a {
            color: var(--primary-light);
            font-weight: 500;
        }
        .faq-item .faq-answer a:hover {
            color: var(--accent);
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.08;
            pointer-events: none;
        }
        .cta-section .cta-content {
            position: relative;
            z-index: 1;
            text-align: center;
            padding: 60px 24px;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 12px;
        }
        .cta-section p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.75);
            max-width: 540px;
            margin: 0 auto 28px;
            line-height: 1.6;
        }
        .cta-section .cta-buttons {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 14px;
            flex-wrap: wrap;
        }
        .cta-section .btn-primary {
            background: var(--accent);
            color: var(--bg-dark);
            padding: 14px 36px;
            border-radius: 40px;
            font-weight: 700;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .cta-section .btn-primary:hover {
            background: var(--accent-light);
            transform: scale(1.03);
            box-shadow: 0 8px 30px rgba(232, 168, 50, 0.25);
        }
        .cta-section .btn-secondary {
            background: transparent;
            color: var(--text-white);
            padding: 12px 34px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 1rem;
            border: 2px solid rgba(255, 255, 255, 0.25);
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .cta-section .btn-secondary:hover {
            border-color: var(--accent-light);
            color: var(--accent-light);
            background: rgba(232, 168, 50, 0.06);
        }
        .cta-section .btn-primary:focus-visible,
        .cta-section .btn-secondary:focus-visible {
            outline: 3px solid var(--accent-light);
            outline-offset: 3px;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 32px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }
        .site-footer .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo {
            margin-bottom: 14px;
        }
        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.55);
            max-width: 320px;
        }
        .footer-col h5 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: 0.03em;
        }
        .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.9rem;
            padding: 5px 0;
            transition: var(--transition);
        }
        .footer-col a i {
            margin-right: 8px;
            width: 18px;
            color: var(--accent);
            opacity: 0.7;
        }
        .footer-col a:hover {
            color: var(--accent-light);
            padding-left: 4px;
        }
        .footer-social {
            display: flex;
            gap: 14px;
            margin-top: 16px;
        }
        .footer-social a {
            width: 40px;
            height: 40px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.6);
            font-size: 1.1rem;
            transition: var(--transition);
            padding: 0;
        }
        .footer-social a:hover {
            background: var(--accent);
            color: var(--bg-dark);
            transform: translateY(-3px);
            padding: 0;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
        }

        /* ===== 响应式 ===== */
        @media screen and (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .category-hero h1 {
                font-size: 2.2rem;
            }
            .section-title {
                font-size: 1.7rem;
            }
        }

        @media screen and (max-width: 768px) {
            .section-padding {
                padding: 56px 0;
            }
            .category-hero {
                min-height: 300px;
            }
            .category-hero h1 {
                font-size: 1.8rem;
            }
            .category-hero p {
                font-size: 1rem;
            }
            .category-hero .hero-search {
                flex-direction: column;
                background: transparent;
                border: none;
                padding: 0;
                gap: 10px;
            }
            .category-hero .hero-search input {
                background: rgba(255, 255, 255, 0.08);
                border-radius: 30px;
                border: 1px solid rgba(255, 255, 255, 0.10);
                padding: 12px 18px;
            }
            .category-hero .hero-search button {
                width: 100%;
                justify-content: center;
            }
            .intro-section .intro-image {
                margin-bottom: 24px;
            }
            .nav-tabs {
                padding: 6px 16px;
                gap: 2px;
            }
            .nav-tabs a {
                padding: 6px 14px;
                font-size: 0.82rem;
                gap: 6px;
            }
            .nav-tabs a i {
                font-size: 0.8rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .path-step {
                flex-direction: column;
                align-items: flex-start;
                padding: 20px;
            }
            .path-step .step-num {
                width: 40px;
                height: 40px;
                font-size: 1rem;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .cta-section .cta-buttons {
                flex-direction: column;
                align-items: stretch;
            }
            .cta-section .btn-primary,
            .cta-section .btn-secondary {
                justify-content: center;
            }
            .hot-list li {
                gap: 12px;
                padding: 14px 0;
            }
            .hot-list .rank {
                font-size: 1.2rem;
                min-width: 32px;
            }
            .faq-item summary {
                padding: 14px 18px;
                font-size: 0.95rem;
            }
            .faq-item .faq-answer {
                padding: 0 18px 16px;
                font-size: 0.9rem;
            }
        }

        @media screen and (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .grid-container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .grid-x {
                margin-left: -10px;
                margin-right: -10px;
            }
            .grid-x>.cell {
                padding-left: 10px;
                padding-right: 10px;
            }
            .section-padding {
                padding: 40px 0;
            }
            .category-hero h1 {
                font-size: 1.5rem;
            }
            .category-hero .hero-content {
                padding: 40px 16px;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .section-subtitle {
                font-size: 0.92rem;
            }
            .knowledge-card .card-body {
                padding: 18px 16px 20px;
            }
            .knowledge-card .card-body h3 {
                font-size: 1rem;
            }
            .header-inner {
                padding: 0 16px;
            }
            .logo {
                font-size: 1.1rem;
                gap: 6px;
            }
            .nav-tabs {
                padding: 4px 12px;
            }
            .nav-tabs a {
                padding: 5px 12px;
                font-size: 0.78rem;
                gap: 4px;
            }
            .nav-tabs a i {
                display: none;
            }
            .cta-section .cta-content {
                padding: 40px 16px;
            }
            .footer-grid {
                gap: 20px;
            }
            .footer-brand p {
                max-width: 100%;
            }
        }