/* roulang page: index */
:root {
            --primary: #6c5ce7;
            --primary-dark: #5a4bd1;
            --primary-light: #a29bfe;
            --secondary: #e17055;
            --accent: #00b894;
            --bg-dark: #0f1117;
            --bg-darker: #0a0c12;
            --bg-card: rgba(255, 255, 255, 0.04);
            --bg-card-hover: rgba(255, 255, 255, 0.08);
            --text-primary: #f1f2f6;
            --text-secondary: #a4b0be;
            --text-muted: #747d8c;
            --border-color: rgba(255, 255, 255, 0.09);
            --border-hover: rgba(255, 255, 255, 0.18);
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
            --shadow-hover: 0 18px 56px rgba(108, 92, 231, 0.22);
            --transition: all .25s cubic-bezier(.4, 0, .2, 1);
            --navbar-bg: rgba(15, 17, 23, 0.9);
            --code-bg: #151720;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
            background: var(--bg-dark);
            color: var(--text-primary);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

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

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

        a:hover {
            color: var(--primary-light);
        }

        button,
        input {
            font: inherit;
            border: none;
            outline: none;
        }

        .container-custom {
            max-width: 1320px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .section-pad {
            padding: 100px 0;
        }

        .section-title-primary {
            font-size: 2.4rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            margin-bottom: 12px;
            background: linear-gradient(135deg, #fff 0%, var(--primary-light) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

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

        /* 自定义滚动条 */
        ::-webkit-scrollbar {
            width: 6px;
        }

        ::-webkit-scrollbar-track {
            background: var(--bg-darker);
        }

        ::-webkit-scrollbar-thumb {
            background: var(--primary);
            border-radius: 6px;
        }

        /* ===== Header / Nav ===== */
        .main-header {
            background: var(--navbar-bg);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 1000;
            transition: var(--transition);
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
        }

        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.45rem;
            font-weight: 800;
            letter-spacing: 0.02em;
            color: #fff;
        }

        .site-logo:hover {
            color: var(--primary-light);
        }

        .logo-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: #fff;
            box-shadow: 0 4px 14px rgba(108, 92, 231, 0.35);
        }

        .main-nav {
            display: flex;
            gap: 8px;
        }

        .nav-link {
            padding: 8px 18px;
            border-radius: 50px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 6px;
            border: 1px solid transparent;
            transition: var(--transition);
        }

        .nav-link i {
            font-size: 14px;
            opacity: 0.8;
        }

        .nav-link:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.06);
            border-color: var(--border-color);
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
        }

        .nav-link.active {
            color: #fff;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border-color: transparent;
            box-shadow: 0 4px 16px rgba(108, 92, 231, 0.35);
        }

        .nav-cta {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .btn-search-icon {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border-color);
            width: 42px;
            height: 42px;
            border-radius: 50px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            transition: var(--transition);
        }

        .btn-search-icon:hover {
            color: #fff;
            background: var(--primary);
            border-color: var(--primary);
            transform: scale(1.05);
        }

        .mobile-toggle {
            display: none;
        }

        /* 移动端导航 */
        @media (max-width: 991px) {
            .mobile-toggle {
                display: block;
                background: none;
                border: none;
                color: var(--text-primary);
                font-size: 1.6rem;
                cursor: pointer;
                padding: 6px 10px;
            }

            .main-nav {
                display: none;
                position: fixed;
                top: 62px;
                left: 0;
                right: 0;
                background: var(--bg-darker);
                border-bottom: 1px solid var(--border-color);
                flex-direction: column;
                padding: 16px;
                gap: 4px;
                border-radius: 0;
            }

            .main-nav.open {
                display: flex;
            }

            .nav-link {
                padding: 12px 18px;
                border-radius: 12px;
                font-size: 1.05rem;
            }

            .main-nav .nav-link.active {
                background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            }
        }

        /* ===== Hero ===== */
        .hero-section {
            position: relative;
            padding: 120px 0 140px;
            background: linear-gradient(rgba(15, 17, 23, 0.82), rgba(15, 17, 23, 0.92)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            border-bottom: 1px solid var(--border-color);
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(108, 92, 231, 0.25), transparent 60%);
            top: -200px;
            right: -200px;
            pointer-events: none;
            animation: float 6s ease-in-out infinite;
        }

        .hero-section::after {
            content: '';
            position: absolute;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(225, 112, 85, 0.15), transparent 60%);
            bottom: -100px;
            left: 20%;
            pointer-events: none;
            animation: float 8s ease-in-out infinite reverse;
        }

        @keyframes float {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-12px); }
        }

        .hero-content {
            position: relative;
            z-index: 2;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border-color);
            border-radius: 50px;
            padding: 8px 18px;
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-bottom: 24px;
            backdrop-filter: blur(10px);
        }

        .hero-badge i {
            color: var(--accent);
        }

        .hero-badge .badge-pulse {
            width: 8px;
            height: 8px;
            background: var(--accent);
            border-radius: 50%;
            display: inline-block;
            animation: pulse 1.8s ease-in-out infinite;
        }

        @keyframes pulse {
            0%, 100% { box-shadow: 0 0 0 0 rgba(0, 184, 148, 0.5); }
            50% { box-shadow: 0 0 0 6px rgba(0, 184, 148, 0); }
        }

        .hero-title {
            font-size: 3.6rem;
            font-weight: 800;
            line-height: 1.15;
            letter-spacing: -0.02em;
            margin-bottom: 20px;
            color: #fff;
        }

        .hero-title .gradient-text {
            background: linear-gradient(135deg, var(--primary-light) 0%, var(--secondary) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-desc {
            font-size: 1.15rem;
            color: var(--text-secondary);
            max-width: 600px;
            margin-bottom: 36px;
            line-height: 1.8;
        }

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

        .btn-custom {
            padding: 12px 30px;
            border-radius: 50px;
            font-size: 0.95rem;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
            cursor: pointer;
        }

        .btn-primary-custom {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            box-shadow: 0 4px 20px rgba(108, 92, 231, 0.4);
            border: none;
        }

        .btn-primary-custom:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(108, 92, 231, 0.55);
            color: #fff;
        }

        .btn-outline-custom {
            background: transparent;
            border: 1px solid var(--border-hover);
            color: var(--text-primary);
        }

        .btn-outline-custom:hover {
            background: rgba(255, 255, 255, 0.06);
            border-color: var(--primary-light);
            transform: translateY(-2px);
            color: var(--primary-light);
        }

        .hero-stats {
            display: flex;
            gap: 40px;
            margin-top: 48px;
        }

        .stat-item {
            display: flex;
            flex-direction: column;
        }

        .stat-number {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }

        .stat-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 4px;
        }

        /* ===== Code / 面板风格 ===== */
        .code-panel {
            background: var(--code-bg);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            padding: 28px;
            position: relative;
            overflow: hidden;
        }

        .code-panel::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--secondary), var(--accent));
            opacity: 0.6;
        }

        .panel-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-bottom: 18px;
            border-bottom: 1px solid var(--border-color);
            margin-bottom: 20px;
        }

        .panel-title {
            font-size: 1.1rem;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .panel-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--primary);
            box-shadow: 0 0 10px var(--primary);
        }

        .dot-g {
            background: var(--accent);
            box-shadow: 0 0 10px var(--accent);
        }

        .dot-o {
            background: var(--secondary);
            box-shadow: 0 0 10px var(--secondary);
        }

        .panel-body p {
            color: var(--text-secondary);
            margin-bottom: 10px;
        }

        .code-line {
            font-family: 'SF Mono', 'Fira Code', monospace;
            font-size: 0.9rem;
        }

        .tag-system {
            display: inline-flex;
            padding: 4px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
        }

        .tag-primary {
            background: rgba(108, 92, 231, 0.15);
            border: 1px solid rgba(108, 92, 231, 0.35);
            color: var(--primary-light);
        }

        .tag-success {
            background: rgba(0, 184, 148, 0.1);
            border: 1px solid rgba(0, 184, 148, 0.3);
            color: var(--accent);
        }

        .tag-secondary {
            background: rgba(225, 112, 85, 0.12);
            border: 1px solid rgba(225, 112, 85, 0.3);
            color: var(--secondary);
        }

        /* ===== 模块卡片 ===== */
        .feature-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            padding: 32px 24px;
            transition: var(--transition);
            height: 100%;
            position: relative;
            overflow: hidden;
        }

        .feature-card:hover {
            transform: translateY(-6px);
            background: var(--bg-card-hover);
            border-color: var(--border-hover);
            box-shadow: var(--shadow-hover);
        }

        .feature-icon {
            width: 52px;
            height: 52px;
            background: linear-gradient(135deg, rgba(108, 92, 231, 0.2), rgba(108, 92, 231, 0.05));
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--primary-light);
            margin-bottom: 20px;
            border: 1px solid rgba(108, 92, 231, 0.3);
        }

        .feature-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: #fff;
        }

        .feature-card p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.6;
            margin-bottom: 16px;
        }

        .feature-link {
            color: var(--primary-light);
            font-size: 0.9rem;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .feature-link:hover {
            gap: 10px;
        }

        .feature-link i {
            font-size: 14px;
        }

        /* ===== 内容卡 ===== */
        .card-content {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            overflow: hidden;
            transition: var(--transition);
            height: 100%;
            margin-bottom: 24px;
        }

        .card-content:hover {
            transform: translateY(-6px);
            border-color: var(--primary-light);
            box-shadow: var(--shadow-hover);
        }

        .card-content-img {
            height: 200px;
            background-size: cover;
            background-position: center;
            position: relative;
        }

        .card-content-img .cat-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(0, 0, 0, 0.7);
            backdrop-filter: blur(8px);
            border-radius: 6px;
            color: #fff;
            font-size: 0.75rem;
            padding: 4px 12px;
        }

        .card-content-body {
            padding: 20px 18px;
        }

        .card-content-body h3 {
            font-size: 1.02rem;
            font-weight: 600;
            line-height: 1.5;
            margin-bottom: 12px;
        }

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

        .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            color: var(--text-muted);
            font-size: 0.82rem;
            padding-top: 14px;
            border-top: 1px solid var(--border-color);
            margin-top: auto;
            flex-wrap: wrap;
        }

        .card-meta .date,
        .card-meta .cat {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .card-meta i {
            font-size: 0.8rem;
        }

        .card-excerpt {
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.6;
            margin-bottom: 14px;
        }

        /* ===== 分类导流 ===== */
        .category-card {
            background: linear-gradient(135deg, rgba(108, 92, 231, 0.15), rgba(108, 92, 231, 0.03));
            border: 1px solid rgba(108, 92, 231, 0.25);
            border-radius: var(--radius);
            padding: 30px 24px;
            transition: var(--transition);
            height: 100%;
            position: relative;
            overflow: hidden;
        }

        .category-card::after {
            content: '';
            position: absolute;
            width: 80px;
            height: 80px;
            background: radial-gradient(circle, rgba(108, 92, 231, 0.3), transparent 70%);
            top: -20px;
            right: -20px;
            border-radius: 50%;
        }

        .category-card:hover {
            transform: translateY(-5px);
            border-color: var(--primary-light);
            box-shadow: 0 12px 36px rgba(108, 92, 231, 0.2);
        }

        .category-icon {
            font-size: 26px;
            color: var(--primary-light);
            margin-bottom: 18px;
            display: inline-flex;
            padding: 14px;
            background: rgba(108, 92, 231, 0.12);
            border-radius: 16px;
            border: 1px solid rgba(108, 92, 231, 0.3);
        }

        .category-label {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 6px;
        }

        .category-card h3 {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: #fff;
        }

        .category-card p {
            color: var(--text-secondary);
            font-size: 0.95rem;
        }

        .category-card .btn-sm-custom {
            margin-top: 18px;
            padding: 8px 20px;
        }

        .btn-sm-custom {
            padding: 8px 20px;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 600;
            padding: 8px 22px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(108, 92, 231, 0.15);
            color: var(--primary-light);
            border: 1px solid rgba(108, 92, 231, 0.4);
            transition: var(--transition);
        }

        .btn-sm-custom:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(108, 92, 231, 0.3);
        }

        /* ===== 数据 / 统计 ===== */
        .section-stats {
            background: linear-gradient(135deg, var(--bg-darker) 0%, var(--bg-dark) 50%, var(--bg-darker) 100%);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }

        .stat-block {
            text-align: center;
            padding: 40px 16px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            height: 100%;
            transition: var(--transition);
        }

        .stat-block:hover {
            transform: translateY(-4px);
            border-color: var(--primary-light);
            box-shadow: 0 8px 30px rgba(108, 92, 231, 0.15);
        }

        .stat-block .stat-icon {
            width: 40px;
            height: 40px;
            margin: 0 auto 16px;
            background: rgba(108, 92, 231, 0.2);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary-light);
            font-size: 1.1rem;
        }

        .stat-block .num {
            font-size: 2.6rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }

        .stat-block .label {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-top: 6px;
        }

        /* ===== 流程/路径 ===== */
        .step-flow {
            position: relative;
            padding: 0 20px;
        }

        .step-item {
            display: flex;
            gap: 20px;
            margin-bottom: 28px;
            position: relative;
        }

        .step-num {
            width: 48px;
            height: 48px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.2rem;
            color: #fff;
            box-shadow: 0 4px 16px rgba(108, 92, 231, 0.35);
            flex-shrink: 0;
        }

        .step-content {
            background: var(--bg-card);
            padding: 20px;
            border-radius: var(--radius);
            border: 1px solid var(--border-color);
            flex: 1;
            transition: var(--transition);
        }

        .step-content:hover {
            border-color: var(--primary-light);
        }

        .step-content h4 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 6px;
            color: #fff;
        }

        .step-content p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            margin-bottom: 0;
        }

        /* ===== FAQ ===== */
        .accordion {
            background: transparent;
        }

        .accordion-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            margin-bottom: 14px;
            overflow: hidden;
            transition: var(--transition);
        }

        .accordion-item:hover {
            border-color: var(--border-hover);
        }

        .accordion-button {
            background: transparent;
            color: var(--text-primary);
            font-weight: 600;
            padding: 18px 20px;
            font-size: 1rem;
            box-shadow: none;
        }

        .accordion-button:not(.collapsed) {
            color: var(--primary-light);
            background: rgba(108, 92, 231, 0.05);
        }

        .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(108, 92, 231, 0.15);
            border: none;
            outline: none;
        }

        .accordion-button::after {
            background-size: 12px;
            filter: invert(1);
            opacity: 0.6;
        }

        .accordion-body {
            color: var(--text-secondary);
            font-size: 0.95rem;
            padding: 0 20px 18px;
            line-height: 1.8;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(rgba(15, 17, 23, 0.85), rgba(15, 17, 23, 0.95)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            border-radius: var(--radius);
            padding: 60px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
            border: 1px solid var(--border-color);
        }

        .cta-section::before {
            content: '';
            position: absolute;
            width: 200px;
            height: 200px;
            background: radial-gradient(circle, rgba(108, 92, 231, 0.4), transparent 70%);
            top: -60px;
            right: -60px;
        }

        .cta-section h2 {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 16px;
            position: relative;
            z-index: 1;
        }

        .cta-section p {
            font-size: 1.05rem;
            color: var(--text-secondary);
            margin-bottom: 32px;
            position: relative;
            z-index: 1;
        }

        .cta-buttons {
            display: flex;
            gap: 14px;
            justify-content: center;
            position: relative;
            z-index: 1;
        }

        /* ===== Footer ===== */
        .main-footer {
            background: var(--bg-darker);
            border-top: 1px solid var(--border-color);
            padding: 60px 0 20px;
        }

        .footer-brand {
            font-size: 1.3rem;
            font-weight: 800;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .footer-desc {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.8;
            margin: 16px 0 20px;
            max-width: 320px;
            margin-top: 16px;
        }

        .footer-email {
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--text-secondary);
            font-size: 0.9rem;
        }

        .footer-email i {
            color: var(--primary-light);
        }

        .footer-title {
            font-size: 0.9rem;
            color: var(--text-primary);
            font-weight: 600;
            margin-bottom: 18px;
            letter-spacing: 0.05em;
            text-transform: uppercase;
        }

        .footer-links {
            list-style-type: none;
        }

        .footer-links li {
            margin-bottom: 10px;
        }

        .footer-links a {
            color: var(--text-secondary);
            font-size: 0.9rem;
            display: inline-block;
            padding: 4px 0;
            transition: var(--transition);
        }

        .footer-links a:hover {
            color: var(--primary-light);
            transform: translateX(4px);
        }

        .footer-bottom {
            border-top: 1px solid var(--border-color);
            margin-top: 48px;
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
        }

        .copyright {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        .copyright a {
            color: var(--text-secondary);
        }

        .footer-social {
            display: flex;
            gap: 8px;
        }

        .footer-social a {
            color: var(--text-muted);
            width: 32px;
            height: 32px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
        }

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

        /* ===== 列表区域 ===== */
        .list-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            padding: 16px 20px;
            display: flex;
            align-items: center;
            gap: 16px;
            margin-bottom: 12px;
            transition: var(--transition);
        }

        .list-item:hover {
            border-color: var(--primary-light);
            background: var(--bg-card-hover);
            transform: translateX(4px);
        }

        .list-item .icon-wrap {
            width: 40px;
            height: 40px;
            background: rgba(108, 92, 231, 0.15);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary-light);
            flex-shrink: 0;
        }

        .list-item .list-main {
            flex: 1;
            min-width: 0;
        }

        .list-item h4 {
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 4px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .list-item .list-meta {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* ===== 键盘/代码块 ===== */
        .keyboard-pad {
            background: linear-gradient(135deg, rgba(108, 92, 231, 0.1), rgba(225, 112, 85, 0.05));
            border: 1px solid rgba(108, 92, 231, 0.2);
            border-radius: var(--radius-sm);
            padding: 24px;
            margin-bottom: 12px;
            transition: var(--transition);
        }

        .keyboard-pad:hover {
            border-color: var(--primary-light);
            box-shadow: 0 4px 20px rgba(108, 92, 231, 0.1);
        }

        .keyboard-pad .kb-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }

        .keyboard-pad .kb-sub {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* 空状态 */
        .empty-state {
            text-align: center;
            padding: 40px 0;
            color: var(--text-muted);
            font-size: 1rem;
        }

        .empty-state i {
            display: block;
            font-size: 2rem;
            margin-bottom: 16px;
            color: var(--text-muted);
            opacity: 0.5;
        }

        /* 响应式 */
        @media (max-width: 1024px) {
            .section-pad {
                padding: 80px 0;
            }

            .hero-title {
                font-size: 3rem;
            }

            .hero-section {
                padding: 90px 0 110px;
            }
        }

        @media (max-width: 768px) {
            .section-pad {
                padding: 60px 0;
            }

            .hero-title {
                font-size: 2.2rem;
            }

            .hero-desc {
                font-size: 1rem;
            }

            .hero-stats {
                gap: 20px;
                flex-wrap: wrap;
            }

            .stat-number {
                font-size: 1.5rem;
            }

            .section-title-primary {
                font-size: 1.8rem;
            }

            .cta-section {
                padding: 40px 24px;
            }

            .cta-section h2 {
                font-size: 1.8rem;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }

            .card-content-img {
                height: 160px;
            }
        }

        @media (max-width: 520px) {
            .hero-badge {
                font-size: 0.8rem;
                padding: 6px 14px;
            }

            .hero-title {
                font-size: 1.8rem;
            }

            .hero-buttons .btn-custom {
                padding: 10px 20px;
                font-size: 0.85rem;
            }

            .cta-buttons {
                flex-direction: column;
                align-items: center;
            }

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

            .stat-block .num {
                font-size: 1.8rem;
            }
        }

/* roulang page: category1 */
/* ===================== 设计变量 ===================== */
        :root {
            --color-primary: #1e3a5f;
            --color-primary-dark: #0f2440;
            --color-primary-light: #2d5684;
            --color-accent: #d4a33d;
            --color-accent-light: #e8c76b;
            --color-accent-dark: #b88a2a;
            --color-bg: #f6f8fc;
            --color-white: #ffffff;
            --color-text: #1a2b3c;
            --color-text-muted: #5a6b7c;
            --color-border: #e3e9f2;
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 8px;
            --shadow-card: 0 6px 24px rgba(30, 58, 95, 0.08);
            --shadow-hover: 0 12px 36px rgba(30, 58, 95, 0.14);
            --transition-base: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }

        /* ===================== Reset / Base ===================== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            line-height: 1.7;
            color: var(--color-text);
            background: var(--color-bg);
            -webkit-font-smoothing: antialiased;
        }

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

        a:hover {
            color: var(--color-accent);
        }

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

        .container-custom {
            width: 100%;
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===================== 吸顶导航 ===================== */
        .main-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--color-border);
            box-shadow: 0 2px 12px rgba(30, 58, 95, 0.06);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 16px;
        }

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

        .brand .logo-icon {
            width: 42px;
            height: 42px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
            color: var(--color-accent);
            border-radius: 12px;
            font-size: 1.15rem;
            box-shadow: 0 4px 14px rgba(30, 58, 95, 0.3);
        }

        .brand .logo-text {
            font-size: 1.45rem;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: 0.5px;
        }

        .brand .logo-text span {
            color: var(--color-accent);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            margin: 0 16px;
        }

        .main-nav .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 18px;
            border-radius: 10px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--color-text-muted);
            border: 1px solid transparent;
            transition: var(--transition-base);
            white-space: nowrap;
        }

        .main-nav .nav-link i {
            font-size: 0.9rem;
            opacity: 0.8;
        }

        .main-nav .nav-link:hover {
            color: var(--color-primary);
            background: rgba(30, 58, 95, 0.06);
            border-color: rgba(30, 58, 95, 0.1);
        }

        .main-nav .nav-link.active {
            color: var(--color-white);
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
            border-color: transparent;
            box-shadow: 0 4px 14px rgba(30, 58, 95, 0.22);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-shrink: 0;
        }

        .header-search {
            position: relative;
        }

        .header-search input {
            width: 180px;
            border: 1px solid var(--color-border);
            background: var(--color-bg);
            border-radius: 50px;
            padding: 9px 36px 9px 16px;
            font-size: 0.85rem;
            color: var(--color-text);
            transition: var(--transition-base);
            outline: none;
        }

        .header-search input:focus {
            width: 220px;
            border-color: var(--color-accent);
            background: var(--color-white);
            box-shadow: 0 0 0 3px rgba(212, 163, 61, 0.15);
        }

        .header-search .search-btn {
            position: absolute;
            right: 4px;
            top: 50%;
            transform: translateY(-50%);
            width: 32px;
            height: 32px;
            display: flex;
            align-items: center;
            justify-content: center;
            border: none;
            background: transparent;
            color: var(--color-text-muted);
            cursor: pointer;
            border-radius: 50%;
            transition: var(--transition-base);
        }

        .header-search .search-btn:hover {
            color: var(--color-primary);
        }

        .mobile-toggle {
            display: none;
            width: 42px;
            height: 42px;
            border: 1px solid var(--color-border);
            background: var(--color-white);
            border-radius: 10px;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: var(--color-primary);
            cursor: pointer;
            transition: var(--transition-base);
        }

        .mobile-toggle:hover {
            border-color: var(--color-accent);
            color: var(--color-accent);
        }

        @media (max-width: 991px) {
            .main-nav {
                position: fixed;
                top: 72px;
                left: 0;
                right: 0;
                background: var(--color-white);
                flex-direction: column;
                align-items: stretch;
                gap: 8px;
                padding: 16px 24px 24px;
                border-bottom: 1px solid var(--color-border);
                box-shadow: 0 12px 30px rgba(30, 58, 95, 0.1);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition-base);
                margin: 0;
            }

            .main-nav.show {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }

            .main-nav .nav-link {
                padding: 14px 16px;
                font-size: 1rem;
            }

            .mobile-toggle {
                display: flex;
            }

            .header-search {
                display: none;
            }
        }

        @media (max-width: 520px) {
            .header-inner {
                height: 64px;
            }

            .brand .logo-text {
                font-size: 1.2rem;
            }

            .brand .logo-icon {
                width: 36px;
                height: 36px;
                font-size: 1rem;
            }
        }

        /* ===================== 页面Banner ===================== */
        .page-banner {
            position: relative;
            padding: 80px 0 64px;
            background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 55%, var(--color-primary-light) 100%);
            color: var(--color-white);
            overflow: hidden;
        }

        .page-banner::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: 0.14;
        }

        .page-banner::after {
            content: '';
            position: absolute;
            width: 360px;
            height: 360px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(212, 163, 61, 0.2), transparent 70%);
            top: -120px;
            right: -80px;
        }

        .page-banner .banner-content {
            position: relative;
            z-index: 2;
        }

        .banner-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.18);
            padding: 7px 20px;
            border-radius: 50px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 20px;
            backdrop-filter: blur(8px);
        }

        .page-banner h1 {
            font-size: 2.6rem;
            font-weight: 700;
            letter-spacing: 1px;
            margin-bottom: 16px;
            color: var(--color-white);
        }

        .page-banner h1 .highlight {
            color: var(--color-accent);
        }

        .page-banner .banner-desc {
            font-size: 1.05rem;
            max-width: 620px;
            color: rgba(255, 255, 255, 0.82);
            margin-bottom: 28px;
            line-height: 1.8;
        }

        .banner-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 28px;
        }

        .banner-meta .meta-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.92rem;
            color: rgba(255, 255, 255, 0.85);
        }

        .banner-meta .meta-item i {
            color: var(--color-accent);
        }

        .banner-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-top: 24px;
        }

        .btn-accent {
            background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
            color: var(--color-primary-dark) !important;
            border: none;
            padding: 12px 30px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.98rem;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            box-shadow: 0 6px 20px rgba(212, 163, 61, 0.4);
            transition: var(--transition-base);
        }

        .btn-accent:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 28px rgba(212, 163, 61, 0.5);
            color: var(--color-primary-dark) !important;
        }

        .btn-outline-banner {
            background: transparent;
            border: 1.5px solid rgba(255, 255, 255, 0.5);
            color: var(--color-white) !important;
            padding: 12px 30px;
            border-radius: 50px;
            font-weight: 500;
            font-size: 0.95rem;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            transition: var(--transition-base);
        }

        .btn-outline-banner:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: var(--color-white);
            color: var(--color-white) !important;
            transform: translateY(-3px);
        }

        @media (max-width: 768px) {
            .page-banner {
                padding: 56px 0 48px;
            }

            .page-banner h1 {
                font-size: 1.8rem;
            }

            .banner-meta {
                gap: 14px;
                flex-direction: column;
            }

            .banner-actions .btn-accent,
            .banner-actions .btn-outline-banner {
                padding: 10px 20px;
                font-size: 0.88rem;
            }
        }

        /* ===================== 板块通用 ===================== */
        .section-block {
            padding: 72px 0;
        }

        .section-block.bg-white {
            background: var(--color-white);
        }

        .section-block.bg-light {
            background: var(--color-bg);
        }

        .section-block.bg-dark {
            background: var(--color-primary-dark);
            color: var(--color-white);
        }

        .section-header {
            margin-bottom: 44px;
        }

        .section-header .section-tag {
            display: inline-block;
            font-size: 0.82rem;
            font-weight: 600;
            letter-spacing: 2px;
            color: var(--color-accent);
            margin-bottom: 10px;
            text-transform: uppercase;
        }

        .section-header .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 12px;
            line-height: 1.3;
        }

        .section-header .section-title.light {
            color: var(--color-white);
        }

        .section-header .section-desc {
            font-size: 1rem;
            color: var(--color-text-muted);
            max-width: 680px;
            margin: 0 auto;
        }

        .section-header .section-desc.light {
            color: rgba(255, 255, 255, 0.7);
        }

        .section-header.text-center .section-desc {
            margin-left: auto;
            margin-right: auto;
        }

        @media (max-width: 768px) {
            .section-block {
                padding: 48px 0;
            }

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

            .section-header .section-title {
                font-size: 1.55rem;
            }
        }

        /* ===================== 面包屑 ===================== */
        .breadcrumb-wrap {
            padding: 18px 0;
            background: var(--color-white);
            border-bottom: 1px solid var(--color-border);
        }

        .breadcrumb-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.88rem;
            color: var(--color-text-muted);
            flex-wrap: wrap;
        }

        .breadcrumb-nav a {
            color: var(--color-text-muted);
            transition: var(--transition-base);
        }

        .breadcrumb-nav a:hover {
            color: var(--color-accent);
        }

        .breadcrumb-nav .separator {
            color: rgba(90, 107, 124, 0.5);
        }

        .breadcrumb-nav .current {
            color: var(--color-primary);
            font-weight: 500;
        }

        /* ===================== 分类标签 ===================== */
        .category-tabs {
            padding: 36px 0 8px;
        }

        .category-tabs .tab-list {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .category-tabs .tab-item {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 22px;
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: 50px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--color-text-muted);
            cursor: pointer;
            transition: var(--transition-base);
        }

        .category-tabs .tab-item:hover {
            border-color: var(--color-accent);
            color: var(--color-accent);
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(212, 163, 61, 0.12);
        }

        .category-tabs .tab-item.active {
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
            color: var(--color-white);
            border-color: transparent;
            box-shadow: 0 6px 18px rgba(30, 58, 95, 0.25);
        }

        .category-tabs .tab-item.active i {
            color: var(--color-accent);
        }

        /* ===================== 内容卡片网格 ===================== */
        .guide-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .guide-card {
            background: var(--color-white);
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border);
            overflow: hidden;
            transition: var(--transition-base);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .guide-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-hover);
            border-color: transparent;
        }

        .guide-card .card-media {
            position: relative;
            height: 200px;
            overflow: hidden;
        }

        .guide-card .card-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .guide-card:hover .card-media img {
            transform: scale(1.06);
        }

        .guide-card .card-media .media-badge {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(6px);
            color: var(--color-primary);
            padding: 5px 14px;
            border-radius: 50px;
            font-size: 0.78rem;
            font-weight: 600;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        }

        .guide-card .card-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .guide-card .card-body .card-title {
            font-size: 1.15rem;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .guide-card .card-body .card-text {
            font-size: 0.92rem;
            color: var(--color-text-muted);
            flex: 1;
            margin-bottom: 16px;
            line-height: 1.7;
        }

        .guide-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            border-top: 1px solid var(--color-border);
            padding-top: 14px;
            font-size: 0.82rem;
            color: var(--color-text-muted);
        }

        .guide-card .card-meta .meta-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(30, 58, 95, 0.06);
            border-radius: 50px;
            padding: 4px 12px;
            font-weight: 500;
            color: var(--color-primary);
        }

        .guide-card .card-meta .meta-date {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        @media (max-width: 991px) {
            .guide-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 620px) {
            .guide-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===================== 步骤流程 ===================== */
        .steps-wrap {
            position: relative;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            margin-top: 40px;
        }

        .step-item {
            position: relative;
            text-align: center;
            padding: 30px 24px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-lg);
            transition: var(--transition-base);
            backdrop-filter: blur(6px);
        }

        .step-item:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(212, 163, 61, 0.4);
            transform: translateY(-6px);
        }

        .step-num {
            width: 56px;
            height: 56px;
            margin: 0 auto 18px;
            background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
            color: var(--color-primary-dark);
            border-radius: 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            font-weight: 700;
            box-shadow: 0 8px 24px rgba(212, 163, 61, 0.35);
        }

        .step-item h4 {
            color: var(--color-white);
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 10px;
        }

        .step-item p {
            color: rgba(255, 255, 255, 0.65);
            font-size: 0.88rem;
            line-height: 1.7;
            margin-bottom: 0;
        }

        .step-item .step-line {
            position: absolute;
            top: 62px;
            right: -30px;
            width: 30px;
            height: 2px;
            background: linear-gradient(90deg, var(--color-accent), transparent);
        }

        .step-item:last-child .step-line {
            display: none;
        }

        @media (max-width: 991px) {
            .steps-wrap {
                grid-template-columns: repeat(2, 1fr);
            }

            .step-item .step-line {
                display: none;
            }
        }

        @media (max-width: 520px) {
            .steps-wrap {
                grid-template-columns: 1fr;
            }
        }

        /* ===================== 热门列表 ===================== */
        .hot-list-section {
            background: var(--color-white);
        }

        .hot-list-wrap {
            max-width: 900px;
            margin: 0 auto;
        }

        .hot-list-item {
            display: flex;
            align-items: flex-start;
            gap: 20px;
            padding: 22px 24px;
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            margin-bottom: 16px;
            transition: var(--transition-base);
        }

        .hot-list-item:hover {
            border-color: var(--color-accent);
            box-shadow: var(--shadow-card);
            transform: translateX(6px);
        }

        .hot-list-item .rank-num {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--color-border);
            line-height: 1;
            min-width: 40px;
            text-align: center;
            font-style: italic;
        }

        .hot-list-item:nth-child(1) .rank-num,
        .hot-list-item:nth-child(2) .rank-num,
        .hot-list-item:nth-child(3) .rank-num {
            color: var(--color-accent);
        }

        .hot-list-item .list-content {
            flex: 1;
        }

        .hot-list-item .list-title {
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 6px;
            line-height: 1.4;
        }

        .hot-list-item .list-desc {
            font-size: 0.88rem;
            color: var(--color-text-muted);
            margin-bottom: 8px;
        }

        .hot-list-item .list-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 0.78rem;
            color: var(--color-text-muted);
        }

        .hot-list-item .list-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .hot-list-item .list-meta i {
            color: var(--color-accent);
        }

        .hot-list-item .list-arrow {
            align-self: center;
            width: 38px;
            height: 38px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--color-bg);
            border-radius: 50%;
            color: var(--color-primary);
            font-size: 0.9rem;
            transition: var(--transition-base);
            flex-shrink: 0;
        }

        .hot-list-item:hover .list-arrow {
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
            color: var(--color-white);
        }

        @media (max-width: 520px) {
            .hot-list-item {
                padding: 18px 16px;
                gap: 14px;
            }

            .hot-list-item .rank-num {
                font-size: 1.2rem;
                min-width: 30px;
            }

            .hot-list-item .list-title {
                font-size: 0.95rem;
            }

            .hot-list-item .list-arrow {
                display: none;
            }
        }

        /* ===================== FAQ ===================== */
        .faq-section {
            background: var(--color-bg);
        }

        .faq-wrap {
            max-width: 860px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 24px 28px;
            margin-bottom: 16px;
            transition: var(--transition-base);
        }

        .faq-item:hover {
            border-color: var(--color-accent);
            box-shadow: var(--shadow-card);
        }

        .faq-item .faq-question {
            display: flex;
            align-items: center;
            gap: 14px;
            cursor: pointer;
            font-size: 1.02rem;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 0;
            user-select: none;
        }

        .faq-item .faq-question .faq-icon {
            width: 32px;
            height: 32px;
            flex-shrink: 0;
            background: rgba(212, 163, 61, 0.12);
            color: var(--color-accent);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.85rem;
            transition: var(--transition-base);
        }

        .faq-item:hover .faq-question .faq-icon {
            background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
            color: var(--color-primary-dark);
        }

        .faq-item .faq-answer {
            display: none;
            padding: 14px 0 0 46px;
            font-size: 0.92rem;
            color: var(--color-text-muted);
            line-height: 1.8;
        }

        .faq-item.active .faq-answer {
            display: block;
            animation: fadeInUp 0.3s ease;
        }

        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(8px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        @media (max-width: 520px) {
            .faq-item {
                padding: 18px 16px;
            }

            .faq-item .faq-answer {
                padding-left: 0;
            }
        }

        /* ===================== CTA ===================== */
        .cta-section {
            position: relative;
            padding: 72px 0;
            background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary-light));
            color: var(--color-white);
            text-align: center;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: 0.1;
        }

        .cta-section .cta-content {
            position: relative;
            z-index: 2;
        }

        .cta-section h3 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-white);
            margin-bottom: 14px;
        }

        .cta-section p {
            color: rgba(255, 255, 255, 0.75);
            max-width: 560px;
            margin: 0 auto 28px;
            font-size: 1rem;
        }

        .cta-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn-cta-light {
            background: var(--color-white);
            color: var(--color-primary) !important;
            padding: 12px 32px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            border: none;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
            transition: var(--transition-base);
        }

        .btn-cta-light:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.2);
            color: var(--color-primary) !important;
        }

        .btn-cta-accent {
            background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
            color: var(--color-primary-dark) !important;
            padding: 12px 32px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            border: none;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            transition: var(--transition-base);
        }

        .btn-cta-accent:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 30px rgba(212, 163, 61, 0.4);
            color: var(--color-primary-dark) !important;
        }

        @media (max-width: 520px) {
            .cta-section h3 {
                font-size: 1.5rem;
            }
        }

        /* ===================== 页脚 ===================== */
        .main-footer {
            background: var(--color-primary-dark);
            color: rgba(255, 255, 255, 0.6);
            padding: 72px 0 0;
            font-size: 0.9rem;
        }

        .main-footer .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--color-white);
            margin-bottom: 16px;
        }

        .main-footer .footer-brand .logo-icon {
            width: 40px;
            height: 40px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-accent);
            font-size: 1.1rem;
            border: 1px solid rgba(255, 255, 255, 0.08);
        }

        .main-footer .footer-desc {
            font-size: 0.88rem;
            line-height: 1.8;
            margin-bottom: 16px;
            max-width: 360px;
        }

        .main-footer .footer-email {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 10px 18px;
            background: rgba(255, 255, 255, 0.05);
            border-radius: 50px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.75);
            border: 1px solid rgba(255, 255, 255, 0.08);
        }

        .main-footer .footer-email i {
            color: var(--color-accent);
        }

        .main-footer .footer-title {
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-white);
            margin-bottom: 20px;
            letter-spacing: 0.5px;
        }

        .main-footer .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .main-footer .footer-links li {
            margin-bottom: 10px;
        }

        .main-footer .footer-links a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.88rem;
            transition: var(--transition-base);
        }

        .main-footer .footer-links a::before {
            content: '\f054';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 0.55rem;
            color: rgba(255, 255, 255, 0.3);
            transition: var(--transition-base);
        }

        .main-footer .footer-links a:hover {
            color: var(--color-accent);
            padding-left: 4px;
        }

        .main-footer .footer-links a:hover::before {
            color: var(--color-accent);
        }

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

        .main-footer .footer-social a {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.95rem;
            transition: var(--transition-base);
        }

        .main-footer .footer-social a:hover {
            background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
            color: var(--color-primary-dark);
            transform: translateY(-4px) scale(1.05);
            box-shadow: 0 8px 20px rgba(212, 163, 61, 0.3);
        }

        .main-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 22px 0;
            margin-top: 48px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 0.82rem;
        }

        .main-footer .copyright {
            color: rgba(255, 255, 255, 0.4);
        }

        @media (max-width: 991px) {
            .main-footer {
                padding: 56px 0 0;
            }
        }

        @media (max-width: 520px) {
            .main-footer .footer-bottom {
                flex-direction: column;
                justify-content: center;
                text-align: center;
                padding: 18px 0;
            }
        }

        /* ===================== 统计数字 ===================== */
        .stats-band {
            background: var(--color-white);
            border-bottom: 1px solid var(--color-border);
            padding: 28px 0;
        }

        .stats-band .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .stats-band .stat-item {
            text-align: center;
            padding: 16px;
        }

        .stats-band .stat-number {
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 4px;
        }

        .stats-band .stat-number span {
            color: var(--color-accent);
        }

        .stats-band .stat-label {
            font-size: 0.85rem;
            color: var(--color-text-muted);
        }

        @media (max-width: 768px) {
            .stats-band .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
        }

        /* ===================== 精选推荐 ===================== */
        .featured-wrap {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }

        .featured-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            min-height: 280px;
            display: flex;
            align-items: flex-end;
            transition: var(--transition-base);
            border: none;
        }

        .featured-card .featured-bg {
            position: absolute;
            inset: 0;
        }

        .featured-card .featured-bg img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .featured-card .featured-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 30%, rgba(15, 36, 64, 0.85) 100%);
        }

        .featured-card .featured-body {
            position: relative;
            z-index: 2;
            padding: 28px;
            color: var(--color-white);
        }

        .featured-card .featured-tag {
            display: inline-block;
            background: var(--color-accent);
            color: var(--color-primary-dark);
            font-size: 0.75rem;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: 50px;
            margin-bottom: 12px;
            letter-spacing: 1px;
        }

        .featured-card .featured-title {
            font-size: 1.3rem;
            font-weight: 600;
            color: var(--color-white);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .featured-card .featured-desc {
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 16px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .featured-card .featured-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--color-white);
            font-size: 0.88rem;
            font-weight: 500;
            border-bottom: 1.5px solid var(--color-accent);
            padding-bottom: 3px;
            transition: var(--transition-base);
        }

        .featured-card .featured-cta:hover {
            color: var(--color-accent);
            gap: 14px;
        }

        .featured-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }

        @media (max-width: 768px) {
            .featured-wrap {
                grid-template-columns: 1fr;
            }

            .featured-card {
                min-height: 240px;
            }
        }

        /* ===================== 下拉动画与焦点 ===================== */
        .btn:focus,
        .btn:focus-visible {
            outline: 3px solid rgba(212, 163, 61, 0.4);
            outline-offset: 2px;
            box-shadow: none;
        }

        a:focus-visible,
        button:focus-visible {
            outline: 3px solid rgba(212, 163, 61, 0.4);
            outline-offset: 2px;
        }

        /* 业务工具入口 */
        .tool-entry {
            background: var(--color-bg);
        }

        .tool-entry-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .tool-entry-item {
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 24px;
            display: flex;
            align-items: flex-start;
            gap: 16px;
            transition: var(--transition-base);
        }

        .tool-entry-item:hover {
            transform: translateY(-4px);
            border-color: var(--color-accent);
            box-shadow: var(--shadow-card);
        }

        .tool-entry-item .tool-icon {
            width: 48px;
            height: 48px;
            flex-shrink: 0;
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
            color: var(--color-accent);
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.15rem;
        }

        .tool-entry-item h5 {
            font-size: 0.98rem;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 6px;
        }

        .tool-entry-item p {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            margin-bottom: 0;
            line-height: 1.6;
        }

        @media (max-width: 991px) {
            .tool-entry-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 620px) {
            .tool-entry-grid {
                grid-template-columns: 1fr;
            }
        }

/* roulang page: article */
:root {
            --primary: #4f46e5;
            --primary-dark: #4338ca;
            --primary-light: #eef2ff;
            --accent: #f59e0b;
            --accent-dark: #d97706;
            --dark: #0f172a;
            --bg: #f8fafc;
            --text: #1e293b;
            --text-muted: #64748b;
            --border: #e2e8f0;
            --white: #ffffff;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 4px 20px rgba(15, 23, 42, 0.06);
            --shadow-lg: 0 12px 40px rgba(15, 23, 42, 0.12);
            --transition: all 0.3s ease;
            --font: 'PingFang SC', 'Microsoft YaHei', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        body,
        h1,
        h2,
        h3,
        h4,
        h5,
        h6,
        p,
        ul,
        ol {
            margin: 0;
            padding: 0;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            display: block;
        }
        button,
        input {
            font-family: inherit;
        }
        .container-custom {
            width: 100%;
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .btn {
            border-radius: 12px;
            padding: 11px 26px;
            font-weight: 600;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border: none;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            box-shadow: 0 4px 16px rgba(79, 70, 229, 0.28);
        }
        .btn-primary:hover,
        .btn-primary:focus {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary-dark));
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(79, 70, 229, 0.36);
        }
        .btn-light {
            background: #fff;
            color: var(--primary-dark);
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
        }
        .btn-light:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
        }
        .btn-outline-light {
            border: 2px solid rgba(255, 255, 255, 0.8);
            color: #fff;
            background: transparent;
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.15);
            color: #fff;
            transform: translateY(-2px);
        }
        .badge-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary-light);
            color: var(--primary-dark);
            font-size: 0.85rem;
            font-weight: 600;
            padding: 5px 14px;
            border-radius: 30px;
            margin: 0 8px 8px 0;
        }
        .section-header {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 44px;
        }
        .section-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 0.85rem;
            font-weight: 700;
            letter-spacing: 1px;
            padding: 5px 16px;
            border-radius: 30px;
            text-transform: uppercase;
            margin-bottom: 12px;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 800;
            color: var(--dark);
            margin-bottom: 10px;
        }
        .section-desc {
            color: var(--text-muted);
            font-size: 1rem;
        }
        .empty-tip {
            text-align: center;
            color: var(--text-muted);
            padding: 28px 0;
            font-size: 0.95rem;
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1080;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            transition: var(--transition);
        }
        .header-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 72px;
            gap: 16px;
        }
        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--dark);
            flex-shrink: 0;
        }
        .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1rem;
            box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1;
            justify-content: center;
        }
        .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 10px 18px;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text);
            border-radius: 30px;
            transition: var(--transition);
        }
        .nav-link:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
        }
        .nav-link.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(79, 70, 229, 0.3);
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .header-search {
            position: relative;
            display: flex;
            align-items: center;
        }
        .header-search input {
            width: 200px;
            height: 40px;
            border: 1px solid var(--border);
            border-radius: 30px;
            padding: 0 42px 0 16px;
            font-size: 0.9rem;
            background: var(--bg);
            outline: none;
            transition: var(--transition);
        }
        .header-search input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.12);
            width: 230px;
            background: #fff;
        }
        .header-search button {
            position: absolute;
            right: 6px;
            width: 30px;
            height: 30px;
            border: none;
            background: var(--primary);
            color: #fff;
            border-radius: 50%;
            font-size: 0.8rem;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
        }
        .header-search button:hover {
            background: var(--primary-dark);
        }
        .nav-toggle {
            display: none;
            width: 42px;
            height: 42px;
            border: 1px solid var(--border);
            background: #fff;
            border-radius: 12px;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: var(--dark);
            cursor: pointer;
            transition: var(--transition);
        }
        .nav-toggle:hover {
            background: var(--primary-light);
            color: var(--primary);
        }
        .article-hero {
            position: relative;
            background-size: cover;
            background-position: center;
            padding: 72px 0 64px;
            color: #fff;
            isolation: isolate;
        }
        .article-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(15, 23, 42, 0.88), rgba(79, 70, 229, 0.55));
            z-index: -1;
        }
        .breadcrumb-line {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            margin-bottom: 20px;
            color: rgba(255, 255, 255, 0.8);
        }
        .breadcrumb-line a {
            color: rgba(255, 255, 255, 0.9);
        }
        .breadcrumb-line a:hover {
            color: var(--accent);
        }
        .breadcrumb-line .sep {
            font-size: 0.7rem;
            opacity: 0.6;
        }
        .article-title {
            font-size: 2.4rem;
            font-weight: 800;
            line-height: 1.35;
            max-width: 820px;
            margin-bottom: 18px;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
            font-size: 0.92rem;
            color: rgba(255, 255, 255, 0.85);
        }
        .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 7px;
        }
        .meta-item i {
            color: var(--accent);
        }
        .article-content-section {
            padding: 60px 0;
        }
        .article-main-card {
            background: var(--white);
            border-radius: var(--radius);
            transition: var(--transition);
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            padding: 44px;
            margin-bottom: 32px;
        }
        .article-body {
            font-size: 1.04rem;
            line-height: 1.9;
            color: var(--text);
        }
        .article-body h2 {
            font-size: 1.55rem;
            font-weight: 700;
            margin: 36px 0 16px;
            padding-left: 16px;
            border-left: 4px solid var(--primary);
            color: var(--dark);
        }
        .article-body h3 {
            font-size: 1.25rem;
            font-weight: 600;
            margin: 26px 0 12px;
            color: var(--dark);
        }
        .article-body p {
            margin-bottom: 20px;
        }
        .article-body img {
            max-width: 100%;
            border-radius: var(--radius-sm);
            margin: 16px 0;
        }
        .article-body a {
            color: var(--primary);
            text-decoration: underline;
        }
        .article-body a:hover {
            color: var(--primary-dark);
        }
        .article-body ul,
        .article-body ol {
            margin-bottom: 20px;
            padding-left: 24px;
        }
        .article-body blockquote {
            border-left: 4px solid var(--accent);
            background: var(--primary-light);
            padding: 14px 20px;
            margin: 20px 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text);
        }
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            margin-top: 32px;
            padding-top: 24px;
            border-top: 1px solid var(--border);
        }
        .not-found-box {
            text-align: center;
            padding: 60px 20px;
        }
        .not-found-icon {
            width: 84px;
            height: 84px;
            border-radius: 50%;
            background: var(--primary-light);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 2rem;
            color: var(--primary);
            margin-bottom: 24px;
        }
        .not-found-box h2 {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--dark);
            margin-bottom: 12px;
        }
        .not-found-box p {
            color: var(--text-muted);
            margin-bottom: 28px;
        }
        .article-sidebar .sidebar-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 28px;
            margin-bottom: 24px;
            transition: var(--transition);
        }
        .sidebar-card:hover {
            box-shadow: var(--shadow-lg);
        }
        .sidebar-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-title i {
            color: var(--primary);
        }
        .about-card p {
            color: var(--text-muted);
            font-size: 0.92rem;
            margin-bottom: 16px;
            line-height: 1.75;
        }
        .sidebar-link {
            color: var(--primary);
            font-weight: 600;
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .sidebar-link:hover {
            color: var(--primary-dark);
            gap: 10px;
        }
        .sidebar-post-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .sidebar-post-list li {
            padding: 11px 0;
            border-bottom: 1px dashed var(--border);
        }
        .sidebar-post-list li:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }
        .sidebar-post-link {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .post-title {
            font-size: 0.92rem;
            font-weight: 600;
            color: var(--text);
            line-height: 1.5;
            transition: var(--transition);
        }
        .post-title:hover {
            color: var(--primary);
        }
        .post-time {
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .sidebar-cats {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .cat-item {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 12px 16px;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 12px;
            font-weight: 600;
            font-size: 0.92rem;
            color: var(--text);
        }
        .cat-item i {
            color: var(--primary);
        }
        .cat-item:hover {
            background: var(--primary-light);
            border-color: var(--primary);
            color: var(--primary-dark);
            transform: translateX(4px);
        }
        .related-section {
            background: var(--dark);
            padding: 68px 0;
        }
        .related-section .section-title {
            color: #fff;
        }
        .related-section .section-desc {
            color: rgba(255, 255, 255, 0.75);
        }
        .related-section .section-tag {
            background: rgba(255, 255, 255, 0.1);
            color: var(--accent);
        }
        .related-card {
            background: #fff;
            border-radius: var(--radius);
            overflow: hidden;
            height: 100%;
            transition: var(--transition);
            box-shadow: 0 4px 14px rgba(0, 0, 0, 0.2);
        }
        .related-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.35);
        }
        .related-card-link {
            display: flex;
            flex-direction: column;
            height: 100%;
            color: inherit;
        }
        .related-img {
            height: 180px;
            overflow: hidden;
        }
        .related-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .related-card:hover .related-img img {
            transform: scale(1.06);
        }
        .related-body {
            padding: 22px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .related-title {
            font-size: 1.02rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 8px;
            line-height: 1.45;
        }
        .related-desc {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-bottom: 16px;
            flex: 1;
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.82rem;
            color: var(--text-muted);
        }
        .category-zone {
            padding: 68px 0;
            background: var(--bg);
        }
        .category-feature-card {
            position: relative;
            border-radius: var(--radius);
            background-size: cover;
            background-position: center;
            min-height: 260px;
            display: flex;
            align-items: flex-end;
            overflow: hidden;
            isolation: isolate;
        }
        .category-feature-card::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(160deg, rgba(15, 23, 42, 0.25), rgba(15, 23, 42, 0.85));
            z-index: -1;
        }
        .category-feature-content {
            padding: 32px;
            color: #fff;
            width: 100%;
        }
        .category-feature-badge {
            display: inline-block;
            background: var(--accent);
            color: var(--dark);
            font-size: 0.78rem;
            font-weight: 700;
            letter-spacing: 1px;
            padding: 4px 14px;
            border-radius: 30px;
            margin-bottom: 14px;
        }
        .category-feature-content h2 {
            font-size: 1.7rem;
            font-weight: 800;
            margin-bottom: 8px;
        }
        .category-feature-content p {
            font-size: 0.92rem;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 20px;
            max-width: 400px;
            line-height: 1.7;
        }
        .faq-section {
            padding: 68px 0;
            background: var(--white);
        }
        .custom-accordion .accordion-item {
            border: 1px solid var(--border);
            border-radius: 14px !important;
            margin-bottom: 14px;
            overflow: hidden;
            box-shadow: 0 2px 10px rgba(15, 23, 42, 0.03);
        }
        .custom-accordion .accordion-button {
            font-weight: 600;
            font-size: 1rem;
            color: var(--dark);
            background: var(--bg);
            padding: 18px 24px;
            box-shadow: none;
        }
        .custom-accordion .accordion-button:not(.collapsed) {
            background: var(--primary-light);
            color: var(--primary-dark);
        }
        .custom-accordion .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
        }
        .custom-accordion .accordion-body {
            padding: 20px 24px;
            color: var(--text-muted);
            line-height: 1.8;
            font-size: 0.95rem;
        }
        .cta-section {
            padding: 60px 0;
        }
        .cta-box {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border-radius: 24px;
            padding: 56px 40px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-box::before {
            content: "";
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
        }
        .cta-box::after {
            content: "";
            position: absolute;
            bottom: -80px;
            left: -40px;
            width: 160px;
            height: 160px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
        }
        .cta-icon {
            width: 70px;
            height: 70px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.15);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            margin-bottom: 20px;
        }
        .cta-box h2 {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 12px;
        }
        .cta-box p {
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 500px;
            margin: 0 auto 28px;
        }
        .cta-buttons {
            display: flex;
            justify-content: center;
            gap: 14px;
            flex-wrap: wrap;
        }
        .main-footer {
            background: var(--dark);
            color: #fff;
            padding: 64px 0 0;
        }
        .footer-brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 1.4rem;
            font-weight: 800;
            margin-bottom: 16px;
        }
        .footer-desc {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            line-height: 1.8;
            margin-bottom: 16px;
        }
        .footer-email {
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-title {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 18px;
            color: #fff;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-social {
            display: flex;
            gap: 10px;
        }
        .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: rgba(255, 255, 255, 0.08);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.8);
            font-size: 1rem;
            transition: var(--transition);
        }
        .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-3px);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 20px 0;
            margin-top: 40px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
        }
        .copyright {
            color: rgba(255, 255, 255, 0.45);
            font-size: 0.85rem;
        }
        @media (max-width: 1024px) {
            .header-search input {
                width: 160px;
            }
            .header-search input:focus {
                width: 180px;
            }
            .article-title {
                font-size: 2rem;
            }
        }
        @media (max-width: 991px) {
            .main-nav {
                position: fixed;
                top: 0;
                right: -100%;
                width: 280px;
                height: 100vh;
                background: var(--white);
                flex-direction: column;
                padding: 90px 24px 24px;
                transition: right 0.35s ease;
                z-index: 1090;
                box-shadow: var(--shadow-lg);
                justify-content: flex-start;
                gap: 6px;
            }
            .main-nav.open {
                right: 0;
            }
            .nav-link {
                width: 100%;
                border-radius: 12px;
                padding: 12px 16px;
            }
            .nav-toggle {
                display: inline-flex;
            }
            .header-search {
                display: none;
            }
            .article-main-card {
                padding: 30px;
            }
            .article-title {
                font-size: 1.7rem;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .category-feature-card {
                min-height: 230px;
            }
        }
        @media (max-width: 768px) {
            .container-custom {
                padding: 0 16px;
            }
            .article-hero {
                padding: 48px 0 40px;
            }
            .article-content-section {
                padding: 40px 0;
            }
            .article-main-card {
                padding: 22px;
            }
            .article-body {
                font-size: 1rem;
                line-height: 1.8;
            }
            .related-section,
            .category-zone,
            .faq-section,
            .cta-section {
                padding: 48px 0;
            }
            .category-feature-card {
                min-height: 200px;
            }
            .cta-box {
                padding: 40px 24px;
            }
            .cta-box h2 {
                font-size: 1.4rem;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 520px) {
            .header-row {
                min-height: 64px;
            }
            .brand-logo {
                font-size: 1.2rem;
            }
            .logo-icon {
                width: 34px;
                height: 34px;
                font-size: 0.85rem;
                border-radius: 10px;
            }
            .article-title {
                font-size: 1.4rem;
            }
            .article-meta {
                gap: 12px;
                font-size: 0.82rem;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .article-main-card {
                padding: 18px;
                border-radius: 12px;
            }
            .related-img {
                height: 160px;
            }
            .category-feature-content {
                padding: 22px;
            }
            .cta-box {
                padding: 32px 18px;
                border-radius: 16px;
            }
            .cta-buttons .btn {
                width: 100%;
                justify-content: center;
            }
        }
        @media (min-width: 1200px) {
            .container-custom {
                max-width: 1280px;
            }
        }

/* roulang page: category2 */
/* ===== 设计变量与基础重置 ===== */
:root {
  --primary: #151b3a;
  --primary-light: #252d5e;
  --accent: #e6b84c;
  --accent-deep: #d4a031;
  --accent-light: #f2d38a;
  --bg: #f7f8fc;
  --bg-soft: #eef0f7;
  --white: #ffffff;
  --text: #171b2a;
  --text-muted: #5f6678;
  --border: #e6e9f0;
  --radius: 18px;
  --radius-sm: 12px;
  --shadow: 0 8px 30px rgba(21, 27, 58, 0.06);
  --shadow-lg: 0 20px 50px rgba(21, 27, 58, 0.12);
  --transition: 0.3s ease;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: var(--transition); }
ul { list-style: none; }
button { border: none; background: none; cursor: pointer; }
.container-custom { max-width: 1280px; margin: 0 auto; padding: 0 28px; }
.section-pad { padding: 88px 0; }
.bg-soft { background: var(--bg-soft); }

/* ===== 通用组件 ===== */
.section-header { text-align: center; max-width: 720px; margin: 0 auto 52px; }
.section-tag {
  display: inline-block;
  background: rgba(230, 184, 76, 0.14);
  color: #a87b1e;
  padding: 6px 20px;
  border-radius: 99px;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 2px;
  margin-bottom: 16px;
}
.section-header h2 {
  font-size: clamp(1.75rem, 3.2vw, 2.5rem);
  font-weight: 800;
  line-height: 1.25;
  color: var(--primary);
  margin-bottom: 14px;
}
.section-header p { color: var(--text-muted); font-size: 1.02rem; line-height: 1.9; }

.btn-accent {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 32px;
  background: linear-gradient(135deg, var(--accent), var(--accent-deep));
  color: var(--primary);
  font-weight: 700;
  border-radius: 99px;
  border: none;
  font-size: 0.95rem;
  transition: var(--transition);
  box-shadow: 0 4px 14px rgba(230, 184, 76, 0.25);
}
.btn-accent:hover { transform: translateY(-2px); box-shadow: 0 10px 28px rgba(230, 184, 76, 0.38); color: var(--primary); }
.btn-accent:active { transform: translateY(0); }

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border: 1.5px solid var(--primary);
  color: var(--primary);
  font-weight: 600;
  border-radius: 99px;
  background: transparent;
  font-size: 0.95rem;
  transition: var(--transition);
}
.btn-outline:hover { background: var(--primary); color: #fff; transform: translateY(-1px); }
.btn-outline:focus { outline: 3px solid rgba(21, 27, 58, 0.2); }

/* ===== 头部导航 ===== */
.main-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border);
}
.header-row { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.site-logo { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; font-size: 1.4rem; color: var(--primary); letter-spacing: -0.3px; }
.logo-icon {
  width: 42px; height: 42px;
  display: inline-flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: var(--accent);
  border-radius: 13px;
  font-size: 1rem;
  box-shadow: 0 4px 12px rgba(21, 27, 58, 0.2);
}
.site-logo:hover { color: var(--primary); }
.main-nav { display: flex; align-items: center; gap: 6px; }
.nav-link {
  padding: 8px 18px;
  border-radius: 99px;
  color: var(--text);
  font-weight: 600;
  font-size: 0.93rem;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition);
}
.nav-link i { color: var(--text-muted); font-size: 0.88rem; transition: var(--transition); }
.nav-link:hover { background: rgba(21, 27, 58, 0.06); color: var(--primary); }
.nav-link:hover i { color: var(--accent); }
.nav-link.active { background: var(--primary); color: #fff; }
.nav-link.active i { color: var(--accent); }
.nav-link:focus-visible { outline: 3px solid rgba(230, 184, 76, 0.5); }

.nav-tools { display: flex; align-items: center; gap: 12px; }
.search-btn, .nav-toggle {
  width: 42px; height: 42px;
  border: 1px solid var(--border);
  background: var(--white);
  border-radius: 12px;
  color: var(--text);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}
.search-btn:hover, .nav-toggle:hover { border-color: var(--accent); color: var(--accent-deep); transform: translateY(-1px); }
.nav-toggle { display: none; }

/* ===== 页面横幅 Banner ===== */
.page-banner {
  position: relative;
  padding: 120px 0 96px;
  background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
}
.page-banner::before {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(21, 26, 58, 0.92), rgba(37, 45, 94, 0.78));
}
.banner-content { position: relative; z-index: 2; max-width: 760px; }
.banner-tag {
  display: inline-block;
  background: rgba(230, 184, 76, 0.16);
  border: 1px solid rgba(230, 184, 76, 0.35);
  color: var(--accent-light);
  padding: 6px 20px;
  border-radius: 99px;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 2px;
  margin-bottom: 20px;
}
.banner-content h1 {
  font-size: clamp(2.2rem, 4.5vw, 3.4rem);
  font-weight: 800;
  color: #fff;
  line-height: 1.18;
  margin-bottom: 18px;
}
.banner-content > p {
  color: rgba(255, 255, 255, 0.78);
  font-size: 1.12rem;
  line-height: 1.9;
  max-width: 560px;
  margin-bottom: 26px;
}
.banner-tags { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 34px; }
.tag-item {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.16);
  color: rgba(255, 255, 255, 0.9);
  padding: 6px 16px;
  border-radius: 99px;
  font-size: 0.84rem;
  display: inline-flex;
  align-items: center;
  gap: 7px;
}
.banner-breadcrumb { color: rgba(255, 255, 255, 0.45); font-size: 0.9rem; display: flex; align-items: center; gap: 8px; }
.banner-breadcrumb a { color: rgba(255, 255, 255, 0.75); }
.banner-breadcrumb a:hover { color: var(--accent); }
.banner-breadcrumb .sep { opacity: 0.5; }

/* ===== 栏目概览 ===== */
.overview-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.overview-item {
  background: var(--white);
  border-radius: var(--radius);
  padding: 38px 32px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.overview-item::after {
  content: "";
  position: absolute;
  bottom: 0; left: 0;
  width: 0; height: 4px;
  background: linear-gradient(90deg, var(--accent), var(--accent-deep));
  transition: width 0.4s ease;
}
.overview-item:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: rgba(230, 184, 76, 0.4); }
.overview-item:hover::after { width: 100%; }
.overview-icon {
  width: 56px; height: 56px;
  border-radius: 16px;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: var(--accent);
  font-size: 1.3rem;
  margin-bottom: 20px;
}
.overview-item h3 { font-size: 1.12rem; font-weight: 700; color: var(--primary); margin-bottom: 10px; }
.overview-item p { color: var(--text-muted); font-size: 0.95rem; line-height: 1.85; }

/* ===== 趋势专题卡片 ===== */
.topic-card {
  background: var(--white);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  overflow: hidden;
  box-shadow: var(--shadow);
  height: 100%;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
}
.topic-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); border-color: rgba(230, 184, 76, 0.35); }
.topic-thumb { position: relative; aspect-ratio: 16 / 10; overflow: hidden; }
.topic-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.topic-card:hover .topic-thumb img { transform: scale(1.06); }
.topic-thumb .badge-tag {
  position: absolute;
  top: 14px; left: 14px;
  background: rgba(21, 27, 58, 0.85);
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 5px 14px;
  border-radius: 99px;
  backdrop-filter: blur(4px);
  border: 1px solid rgba(230, 184, 76, 0.3);
}
.topic-body { padding: 26px 26px 30px; display: flex; flex-direction: column; flex: 1; }
.topic-body h3 { font-size: 1.08rem; font-weight: 700; line-height: 1.55; color: var(--primary); margin-bottom: 12px; }
.topic-body p { color: var(--text-muted); font-size: 0.93rem; line-height: 1.8; margin-bottom: 20px; flex: 1; }
.topic-link {
  color: var(--accent-deep);
  font-weight: 600;
  font-size: 0.88rem;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.topic-link i { font-size: 0.8rem; }
.topic-link:hover { color: var(--primary); gap: 12px; }

/* ===== 最新内容列表 ===== */
.article-stack { display: flex; flex-direction: column; gap: 20px; }
.article-row {
  display: flex;
  align-items: center;
  gap: 26px;
  background: var(--white);
  border-radius: var(--radius);
  padding: 24px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  transition: var(--transition);
}
.article-row:hover { box-shadow: var(--shadow-lg); transform: translateX(6px); border-color: rgba(230, 184, 76, 0.35); }
.article-thumb { width: 168px; height: 112px; border-radius: var(--radius-sm); overflow: hidden; flex-shrink: 0; }
.article-thumb img { width: 100%; height: 100%; object-fit: cover; }
.article-info { flex: 1; min-width: 0; }
.article-meta { display: flex; gap: 16px; color: var(--text-muted); font-size: 0.82rem; margin-bottom: 8px; flex-wrap: wrap; }
.article-meta span { display: inline-flex; align-items: center; gap: 6px; }
.article-meta i { color: var(--accent-deep); }
.article-info h3 { font-size: 1.07rem; font-weight: 700; color: var(--primary); margin-bottom: 8px; line-height: 1.5; }
.article-info p { color: var(--text-muted); font-size: 0.92rem; line-height: 1.75; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

/* ===== 数据统计区块 ===== */
.stats-block {
  position: relative;
  padding: 100px 0;
  background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
}
.stats-block::before {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(21, 26, 58, 0.94), rgba(37, 45, 94, 0.88));
}
.stats-inner { position: relative; z-index: 2; }
.stats-header { text-align: center; margin-bottom: 52px; }
.stats-header .section-tag { background: rgba(230, 184, 76, 0.18); color: var(--accent); border: 1px solid rgba(230, 184, 76, 0.25); }
.stats-header h2 { color: #fff; font-size: clamp(1.7rem, 3vw, 2.4rem); font-weight: 800; margin-bottom: 14px; }
.stats-header p { color: rgba(255, 255, 255, 0.55); max-width: 560px; margin: 0 auto; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; }
.stat-item { text-align: center; background: rgba(255, 255, 255, 0.06); border: 1px solid rgba(255, 255, 255, 0.1); border-radius: var(--radius); padding: 42px 20px; transition: var(--transition); }
.stat-item:hover { background: rgba(255, 255, 255, 0.1); transform: translateY(-4px); border-color: rgba(230, 184, 76, 0.25); }
.stat-number { font-size: 2.4rem; font-weight: 800; color: var(--accent); line-height: 1.2; margin-bottom: 8px; }
.stat-label { color: rgba(255, 255, 255, 0.75); font-size: 0.95rem; }

/* ===== 时间线 ===== */
.timeline-block { position: relative; }
.timeline { position: relative; max-width: 900px; margin: 0 auto; padding: 20px 0 0; }
.timeline::before { content: ""; position: absolute; left: 50%; top: 20px; bottom: 20px; width: 2px; background: linear-gradient(180deg, var(--accent), var(--primary)); transform: translateX(-50%); }
.timeline-item { position: relative; width: 50%; padding: 0 50px 56px; }
.timeline-item:nth-child(odd) { left: 0; text-align: right; padding-right: 60px; }
.timeline-item:nth-child(even) { left: 50%; padding-left: 60px; text-align: left; }
.timeline-item:last-child { padding-bottom: 0; }
.timeline-dot {
  position: absolute;
  top: 6px;
  width: 16px; height: 16px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 0 6px rgba(230, 184, 76, 0.2);
  z-index: 2;
}
.timeline-item:nth-child(odd) .timeline-dot { right: -8px; }
.timeline-item:nth-child(even) .timeline-dot { left: -8px; }
.timeline-year { display: inline-block; font-size: 0.82rem; font-weight: 700; color: #a87b1e; background: rgba(230, 184, 76, 0.12); padding: 4px 14px; border-radius: 99px; margin-bottom: 12px; letter-spacing: 1px; }
.timeline-item h3 { font-size: 1.14rem; font-weight: 700; color: var(--primary); margin-bottom: 10px; }
.timeline-item p { color: var(--text-muted); font-size: 0.95rem; line-height: 1.85; }

/* ===== FAQ 区块 ===== */
.accordion-wrap { max-width: 860px; margin: 0 auto; }
.accordion-item {
  background: var(--white);
  border: 1px solid var(--border) !important;
  border-radius: var(--radius-sm) !important;
  margin-bottom: 14px;
  overflow: hidden;
  box-shadow: 0 2px 10px rgba(21, 27, 58, 0.03);
}
.accordion-button {
  padding: 22px 26px;
  font-weight: 700;
  font-size: 1.02rem;
  color: var(--text);
  background: var(--white);
  border: none;
  box-shadow: none !important;
  display: flex;
  align-items: center;
  gap: 12px;
}
.accordion-button::after { margin-left: auto; color: var(--accent-deep); }
.accordion-button:not(.collapsed) { background: rgba(230, 184, 76, 0.06); color: var(--primary); }
.accordion-button:focus { outline: 3px solid rgba(230, 184, 76, 0.3); }
.accordion-button:hover { background: rgba(21, 27, 58, 0.02); }
.accordion-button:not(.collapsed)::after { filter: brightness(0.8); }
.accordion-body { padding: 4px 26px 24px; color: var(--text-muted); font-size: 0.95rem; line-height: 1.9; }

/* ===== CTA 区块 ===== */
.cta-block {
  position: relative;
  padding: 96px 0;
  background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
}
.cta-block::before {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(21, 26, 58, 0.92), rgba(37, 45, 94, 0.88));
}
.cta-inner { position: relative; z-index: 2; text-align: center; max-width: 660px; margin: 0 auto; }
.cta-inner h2 { color: #fff; font-size: clamp(1.8rem, 3.4vw, 2.6rem); font-weight: 800; margin-bottom: 16px; }
.cta-inner p { color: rgba(255, 255, 255, 0.7); font-size: 1.05rem; line-height: 1.9; margin-bottom: 30px; }
.cta-actions { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }
.cta-email { color: rgba(255, 255, 255, 0.5); font-size: 0.9rem; margin-top: 18px; display: inline-flex; align-items: center; gap: 8px; }
.cta-email i { color: var(--accent); }

/* ===== 页脚 ===== */
.main-footer {
  background: var(--primary);
  padding: 72px 0 0;
}
.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.4rem;
  color: #fff;
}
.footer-brand:hover { color: var(--accent); }
.footer-brand .logo-icon { background: rgba(255, 255, 255, 0.1); box-shadow: none; }
.footer-desc {
  color: rgba(255, 255, 255, 0.55);
  line-height: 1.9;
  font-size: 0.94rem;
  margin-top: 20px;
  max-width: 360px;
}
.footer-email {
  color: var(--accent);
  font-size: 0.9rem;
  margin-top: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.footer-title { color: #fff; font-size: 1rem; font-weight: 700; margin-bottom: 20px; position: relative; padding-bottom: 10px; }
.footer-title::after { content: ""; position: absolute; left: 0; bottom: 0; width: 28px; height: 2px; background: var(--accent); border-radius: 2px; }
.footer-links li { margin-bottom: 10px; }
.footer-links a { color: rgba(255, 255, 255, 0.5); font-size: 0.92rem; transition: var(--transition); display: inline-flex; align-items: center; gap: 6px; }
.footer-links a:hover { color: var(--accent); padding-left: 4px; }
.footer-social { display: flex; gap: 12px; }
.footer-social a {
  width: 42px; height: 42px;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 12px;
  color: rgba(255, 255, 255, 0.65);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.05rem;
  transition: var(--transition);
}
.footer-social a:hover { background: var(--accent); color: var(--primary); transform: translateY(-3px); border-color: var(--accent); }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.07);
  margin-top: 56px;
  padding: 22px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}
.copyright { color: rgba(255, 255, 255, 0.38); font-size: 0.85rem; }

/* ===== 响应式断点 ===== */
@media (max-width: 1024px) {
  .overview-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .page-banner { padding: 100px 0 78px; }
}

@media (max-width: 768px) {
  .section-pad { padding: 64px 0; }
  .container-custom { padding: 0 20px; }

  .nav-toggle { display: inline-flex; }
  .main-nav {
    position: absolute;
    top: 72px;
    left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    background: #fff;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
    box-shadow: 0 20px 40px rgba(21, 27, 58, 0.12);
    display: none;
    max-height: 360px;
    overflow-y: auto;
  }
  .main-nav.open { display: flex; }
  .nav-link { padding: 12px 18px; border-radius: 12px; }
  .nav-link:hover { background: var(--bg-soft); }

  .overview-grid { grid-template-columns: 1fr; }
  .article-row { flex-direction: column; align-items: flex-start; }
  .article-thumb { width: 100%; height: 180px; }
  .stats-grid { gap: 16px; }
  .stat-number { font-size: 1.9rem; }

  .timeline::before { left: 10px; }
  .timeline-item, .timeline-item:nth-child(odd), .timeline-item:nth-child(even) {
    width: 100%;
    left: 0;
    text-align: left;
    padding: 0 0 44px 42px;
  }
  .timeline-item:nth-child(odd) .timeline-dot,
  .timeline-item:nth-child(even) .timeline-dot { left: 3px; right: auto; }

  .cta-block { padding: 72px 0; }
  .cta-actions { flex-direction: column; }
  .cta-actions .btn-accent, .cta-actions .btn-outline { width: 100%; justify-content: center; }
  .footer-bottom { justify-content: center; text-align: center; }
}

@media (max-width: 520px) {
  .container-custom { padding: 0 16px; }
  .header-row { height: 64px; }
  .main-nav { top: 64px; }
  .site-logo { font-size: 1.2rem; font-size: calc(1.15rem + 0.2vw); }
  .logo-icon { width: 38px; height: 38px; font-size: 0.9rem; }
  .page-banner { padding: 76px 0 56px; }
  .page-banner h1.br-title { font-size: 2rem; }
  .banner-content p { font-size: 1rem; }
  .banner-tags { gap: 6px; }
  .tag-item { font-size: 0.78rem; padding: 5px 12px; }
  .overview-item { padding: 28px 22px; }
  .topic-body { padding: 20px; }
  .article-row { padding: 18px; }
  .article-thumb { height: 150px; }
  .stats-grid { grid-template-columns: 1fr; }
  .stat-item { padding: 30px 16px; }
  .timeline-item, .timeline-item:nth-child(odd), .timeline-item:nth-child(even) { padding-left: 32px; }
  .accordion-button { font-size: 0.95rem; padding: 18px 20px; }
  .footer-brand { font-size: 1.2rem; }
}