/* roulang page: index */
:root {
            --color-primary: #1a56db;
            --color-primary-dark: #1e40af;
            --color-primary-light: #60a5fa;
            --color-accent: #f59e0b;
            --color-accent-dark: #d97706;
            --color-bg: #f0f4f8;
            --color-white: #ffffff;
            --color-text: #0f172a;
            --color-text-weak: #64748b;
            --color-border: #e2e8f0;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }

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

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

        button, input, textarea {
            font-family: inherit;
            transition: var(--transition);
        }

        button:focus-visible, a:focus-visible, input:focus-visible {
            outline: 2px solid var(--color-primary-light);
            outline-offset: 2px;
        }

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

        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            text-align: center;
            margin-bottom: 0.5rem;
            color: var(--color-text);
        }

        .section-subtitle {
            font-size: 1.05rem;
            text-align: center;
            color: var(--color-text-weak);
            max-width: 600px;
            margin: 0 auto 3rem auto;
        }

        @media (max-width: 768px) {
            .section-title {
                font-size: 1.6rem;
            }
            .section-subtitle {
                font-size: 0.95rem;
                margin-bottom: 2rem;
            }
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 36px;
            background: var(--color-primary);
            color: #fff;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 1.05rem;
            border: none;
            cursor: pointer;
            box-shadow: 0 4px 14px rgba(26, 86, 219, 0.35);
            transition: var(--transition);
        }

        .btn-primary:hover {
            background: var(--color-primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(26, 86, 219, 0.45);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(26, 86, 219, 0.25);
        }

        .btn-accent {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 36px;
            background: var(--color-accent);
            color: #fff;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 1.05rem;
            border: none;
            cursor: pointer;
            box-shadow: 0 4px 14px rgba(245, 158, 11, 0.35);
            transition: var(--transition);
        }

        .btn-accent:hover {
            background: var(--color-accent-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(245, 158, 11, 0.45);
        }

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

        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            background: transparent;
            color: var(--color-primary);
            border: 2px solid var(--color-primary);
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition);
        }

        .btn-outline:hover {
            background: var(--color-primary);
            color: #fff;
            transform: translateY(-2px);
        }

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

        .card {
            background: var(--color-white);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            overflow: hidden;
        }

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

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 4px 14px;
            border-radius: 999px;
            font-size: 0.8rem;
            font-weight: 500;
            background: var(--color-primary-50, #eff6ff);
            color: var(--color-primary);
            border: 1px solid var(--color-primary-200, #bfdbfe);
        }

        .badge-accent {
            background: #fffbeb;
            color: var(--color-accent-dark);
            border-color: #fde68a;
        }

        .badge-green {
            background: #ecfdf5;
            color: #059669;
            border-color: #a7f3d0;
        }

        .tag {
            display: inline-block;
            padding: 2px 12px;
            border-radius: 6px;
            font-size: 0.75rem;
            font-weight: 500;
            background: #f1f5f9;
            color: var(--color-text-weak);
            transition: var(--transition);
        }

        .tag:hover {
            background: var(--color-primary);
            color: #fff;
        }

        .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.1;
            color: var(--color-primary);
        }

        .stat-label {
            font-size: 0.95rem;
            color: var(--color-text-weak);
            margin-top: 4px;
        }

        @media (max-width: 768px) {
            .stat-number {
                font-size: 2.2rem;
            }
        }

        .divider {
            width: 60px;
            height: 4px;
            background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
            border-radius: 4px;
            margin: 0 auto 1.5rem auto;
        }

        /* 导航 */
        .navbar {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(226, 232, 240, 0.6);
            transition: var(--transition);
        }

        .navbar .nav-link {
            position: relative;
            padding: 8px 4px;
            font-weight: 500;
            color: var(--color-text-weak);
            transition: var(--transition);
        }

        .navbar .nav-link::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--color-primary);
            border-radius: 2px;
            transition: var(--transition);
        }

        .navbar .nav-link:hover {
            color: var(--color-primary);
        }

        .navbar .nav-link:hover::after {
            width: 100%;
        }

        .navbar .nav-link.active {
            color: var(--color-primary);
            font-weight: 600;
        }

        .navbar .nav-link.active::after {
            width: 100%;
        }

        .navbar .logo-text {
            font-size: 1.5rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.5px;
        }

        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--color-text);
            cursor: pointer;
            padding: 4px;
        }

        @media (max-width: 768px) {
            .mobile-menu-btn {
                display: block;
            }
            .nav-links {
                display: none;
                flex-direction: column;
                width: 100%;
                padding: 16px 0;
                gap: 12px;
                border-top: 1px solid var(--color-border);
                margin-top: 12px;
            }
            .nav-links.open {
                display: flex;
            }
            .navbar .nav-link {
                padding: 10px 0;
                font-size: 1.05rem;
            }
        }

        /* Hero */
        .hero {
            position: relative;
            min-height: 92vh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            background: linear-gradient(135deg, rgba(15,23,42,0.82) 0%, rgba(30,64,175,0.70) 100%), url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            color: #fff;
            padding: 80px 24px;
        }

        .hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 20px;
            border-radius: 999px;
            background: rgba(255,255,255,0.15);
            backdrop-filter: blur(6px);
            border: 1px solid rgba(255,255,255,0.25);
            font-size: 0.9rem;
            font-weight: 500;
            color: #fff;
            margin-bottom: 24px;
        }

        .hero .hero-badge i {
            font-size: 0.8rem;
        }

        .hero h1 {
            font-size: 3.4rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 20px;
            letter-spacing: -0.02em;
        }

        .hero p {
            font-size: 1.15rem;
            max-width: 620px;
            margin: 0 auto 36px auto;
            opacity: 0.9;
            line-height: 1.7;
        }

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

        .hero .hero-actions .btn-accent {
            box-shadow: 0 4px 20px rgba(245,158,11,0.45);
        }

        .hero .hero-actions .btn-outline-light {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255,255,255,0.6);
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 1.05rem;
            cursor: pointer;
            transition: var(--transition);
        }

        .hero .hero-actions .btn-outline-light:hover {
            background: rgba(255,255,255,0.15);
            border-color: #fff;
            transform: translateY(-2px);
        }

        .hero .hero-stats {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 40px;
            margin-top: 56px;
            padding-top: 40px;
            border-top: 1px solid rgba(255,255,255,0.15);
        }

        .hero .hero-stats .stat-item {
            text-align: center;
        }

        .hero .hero-stats .stat-number {
            font-size: 2.2rem;
            font-weight: 800;
            color: #fff;
        }

        .hero .hero-stats .stat-label {
            color: rgba(255,255,255,0.7);
            font-size: 0.9rem;
        }

        @media (max-width: 768px) {
            .hero {
                min-height: 80vh;
                padding: 60px 16px;
            }
            .hero h1 {
                font-size: 2.2rem;
            }
            .hero p {
                font-size: 1rem;
            }
            .hero .hero-stats {
                gap: 24px;
                margin-top: 40px;
                padding-top: 28px;
            }
            .hero .hero-stats .stat-number {
                font-size: 1.8rem;
            }
        }

        @media (max-width: 520px) {
            .hero h1 {
                font-size: 1.8rem;
            }
            .hero .hero-actions {
                flex-direction: column;
                align-items: center;
            }
            .hero .hero-actions .btn-primary,
            .hero .hero-actions .btn-outline-light,
            .hero .hero-actions .btn-accent {
                width: 100%;
                max-width: 280px;
                justify-content: center;
            }
        }

        /* 特色板块 */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        @media (max-width: 1024px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

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

        .feature-card {
            background: var(--color-white);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--color-border);
        }

        .feature-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-6px);
            border-color: var(--color-primary-200, #bfdbfe);
        }

        .feature-card .icon-wrap {
            width: 64px;
            height: 64px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px auto;
            font-size: 1.6rem;
            color: #fff;
            background: var(--color-primary);
        }

        .feature-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
        }

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

        /* 分类入口 */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        @media (max-width: 1024px) {
            .category-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

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

        .category-card {
            position: relative;
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            background: var(--color-white);
            border: 1px solid var(--color-border);
        }

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

        .category-card .cat-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            transition: var(--transition);
        }

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

        .category-card .cat-body {
            padding: 20px 20px 24px;
        }

        .category-card .cat-body h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 6px;
        }

        .category-card .cat-body p {
            font-size: 0.88rem;
            color: var(--color-text-weak);
            line-height: 1.5;
            margin-bottom: 12px;
        }

        .category-card .cat-body .cat-link {
            font-weight: 600;
            color: var(--color-primary);
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .category-card .cat-body .cat-link i {
            font-size: 0.8rem;
            transition: var(--transition);
        }

        .category-card .cat-body .cat-link:hover i {
            transform: translateX(4px);
        }

        /* 最新资讯列表 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        @media (max-width: 1024px) {
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

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

        .news-card {
            background: var(--color-white);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--color-border);
            display: flex;
            flex-direction: column;
        }

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

        .news-card .news-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            transition: var(--transition);
        }

        .news-card:hover .news-img {
            transform: scale(1.03);
        }

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

        .news-card .news-body .news-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px;
            margin-bottom: 10px;
            font-size: 0.8rem;
            color: var(--color-text-weak);
        }

        .news-card .news-body .news-meta .news-cat {
            font-weight: 500;
            color: var(--color-primary);
            background: #eff6ff;
            padding: 2px 10px;
            border-radius: 6px;
        }

        .news-card .news-body h3 {
            font-size: 1.05rem;
            font-weight: 700;
            line-height: 1.4;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-card .news-body p {
            font-size: 0.88rem;
            color: var(--color-text-weak);
            line-height: 1.6;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-card .news-body .read-more {
            margin-top: 14px;
            font-weight: 600;
            color: var(--color-primary);
            font-size: 0.88rem;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .news-card .news-body .read-more i {
            font-size: 0.75rem;
            transition: var(--transition);
        }

        .news-card .news-body .read-more:hover i {
            transform: translateX(4px);
        }

        /* 数据统计 */
        .stats-section {
            background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
            color: #fff;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            text-align: center;
        }

        .stats-grid .stat-item .stat-number {
            color: #fff;
            font-size: 2.6rem;
        }

        .stats-grid .stat-item .stat-label {
            color: rgba(255,255,255,0.75);
        }

        @media (max-width: 1024px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 28px;
            }
        }

        @media (max-width: 520px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .stats-grid .stat-item .stat-number {
                font-size: 2rem;
            }
        }

        /* 流程 */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
        }

        .steps-grid::before {
            content: '';
            position: absolute;
            top: 48px;
            left: 8%;
            right: 8%;
            height: 2px;
            background: linear-gradient(90deg, var(--color-primary), var(--color-accent), var(--color-primary));
            z-index: 0;
        }

        .step-item {
            position: relative;
            z-index: 1;
            text-align: center;
            background: var(--color-white);
            border-radius: var(--radius-md);
            padding: 32px 20px 28px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border);
            transition: var(--transition);
        }

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

        .step-item .step-num {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: var(--color-primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            font-weight: 700;
            margin: 0 auto 16px auto;
            box-shadow: 0 4px 12px rgba(26,86,219,0.3);
        }

        .step-item h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 6px;
        }

        .step-item p {
            font-size: 0.88rem;
            color: var(--color-text-weak);
        }

        @media (max-width: 1024px) {
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid::before {
                display: none;
            }
        }

        @media (max-width: 520px) {
            .steps-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .step-item {
                padding: 24px 16px 20px;
            }
        }

        /* FAQ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

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

        .faq-item:hover {
            border-color: var(--color-primary-200, #bfdbfe);
        }

        .faq-item .faq-question {
            width: 100%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 18px 24px;
            background: none;
            border: none;
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text);
            cursor: pointer;
            text-align: left;
            gap: 12px;
        }

        .faq-item .faq-question i {
            font-size: 0.9rem;
            color: var(--color-text-weak);
            transition: var(--transition);
            flex-shrink: 0;
        }

        .faq-item .faq-question.open i {
            transform: rotate(180deg);
            color: var(--color-primary);
        }

        .faq-item .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
        }

        .faq-item .faq-answer.open {
            max-height: 300px;
            padding: 0 24px 20px 24px;
        }

        .faq-item .faq-answer p {
            font-size: 0.95rem;
            color: var(--color-text-weak);
            line-height: 1.7;
        }

        @media (max-width: 520px) {
            .faq-item .faq-question {
                padding: 14px 16px;
                font-size: 0.95rem;
            }
            .faq-item .faq-answer.open {
                padding: 0 16px 16px 16px;
            }
        }

        /* CTA */
        .cta-section {
            background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-accent-dark) 100%);
            color: #fff;
            text-align: center;
            padding: 80px 24px;
        }

        .cta-section h2 {
            font-size: 2.4rem;
            font-weight: 800;
            margin-bottom: 16px;
        }

        .cta-section p {
            font-size: 1.1rem;
            opacity: 0.9;
            max-width: 560px;
            margin: 0 auto 32px auto;
        }

        .cta-section .btn-white {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 16px 44px;
            background: #fff;
            color: var(--color-primary-dark);
            border-radius: var(--radius-md);
            font-weight: 700;
            font-size: 1.1rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
        }

        .cta-section .btn-white:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 32px rgba(0,0,0,0.2);
        }

        @media (max-width: 768px) {
            .cta-section {
                padding: 60px 16px;
            }
            .cta-section h2 {
                font-size: 1.8rem;
            }
            .cta-section p {
                font-size: 1rem;
            }
        }

        /* 页脚 */
        .footer {
            background: var(--color-text);
            color: rgba(255,255,255,0.8);
            padding: 56px 24px 32px;
        }

        .footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer .footer-brand .logo-text {
            font-size: 1.4rem;
            font-weight: 800;
            background: linear-gradient(135deg, #60a5fa, #fcd34d);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            display: inline-block;
            margin-bottom: 12px;
        }

        .footer .footer-brand p {
            font-size: 0.9rem;
            opacity: 0.7;
            max-width: 320px;
            line-height: 1.7;
        }

        .footer h4 {
            color: #fff;
            font-weight: 700;
            font-size: 1rem;
            margin-bottom: 16px;
        }

        .footer ul {
            list-style: none;
            padding: 0;
        }

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

        .footer ul li a {
            font-size: 0.9rem;
            opacity: 0.7;
            transition: var(--transition);
        }

        .footer ul li a:hover {
            opacity: 1;
            color: var(--color-primary-light);
        }

        .footer .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 24px;
            text-align: center;
            font-size: 0.85rem;
            opacity: 0.6;
        }

        @media (max-width: 1024px) {
            .footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 520px) {
            .footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer {
                padding: 40px 16px 24px;
            }
        }

        /* 空状态 */
        .empty-state {
            text-align: center;
            padding: 40px 20px;
            color: var(--color-text-weak);
            font-size: 1rem;
        }

        .empty-state i {
            font-size: 2.4rem;
            opacity: 0.3;
            margin-bottom: 12px;
            display: block;
        }

        /* 动画辅助 */
        .fade-in-up {
            opacity: 0;
            transform: translateY(20px);
            animation: fadeInUp 0.6s ease forwards;
        }

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

        .delay-1 { animation-delay: 0.1s; }
        .delay-2 { animation-delay: 0.2s; }
        .delay-3 { animation-delay: 0.3s; }
        .delay-4 { animation-delay: 0.4s; }

        /* 响应式图片容器 */
        .img-cover {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

/* roulang page: article */
:root {
            --primary: #1a56db;
            --primary-light: #3b82f6;
            --primary-dark: #1e40af;
            --accent: #f59e0b;
            --accent-light: #fbbf24;
            --accent-dark: #d97706;
            --bg-body: #0f172a;
            --bg-card: #1e293b;
            --bg-elevated: #334155;
            --text-primary: #f1f5f9;
            --text-secondary: #94a3b8;
            --text-muted: #64748b;
            --border-color: rgba(148, 163, 184, 0.15);
            --radius: 16px;
            --radius-sm: 10px;
            --radius-lg: 24px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.3);
            --shadow-hover: 0 16px 48px rgba(0, 0, 0, 0.4);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            background: var(--bg-body);
            color: var(--text-primary);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

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

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

        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* Header & Navigation */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(15, 23, 42, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .header.scrolled {
            background: rgba(15, 23, 42, 0.98);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
        }

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

        .logo-text {
            font-size: 1.5rem;
            font-weight: 800;
            background: linear-gradient(135deg, #f59e0b, #f97316);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.5px;
            white-space: nowrap;
        }

        .logo-text i {
            -webkit-text-fill-color: initial;
            color: #f59e0b;
            margin-right: 8px;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 32px;
        }

        .nav-link {
            font-size: 0.925rem;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 6px 0;
            position: relative;
            transition: var(--transition);
        }

        .nav-link::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: linear-gradient(90deg, #f59e0b, #f97316);
            border-radius: 2px;
            transition: var(--transition);
        }

        .nav-link:hover {
            color: var(--text-primary);
        }

        .nav-link:hover::after {
            width: 100%;
        }

        .nav-link.active {
            color: #f59e0b;
        }

        .nav-link.active::after {
            width: 100%;
            background: #f59e0b;
        }

        .btn-accent {
            background: linear-gradient(135deg, #f59e0b, #f97316);
            color: #0f172a;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-accent:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(245, 158, 11, 0.35);
        }

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

        .btn-outline {
            background: transparent;
            border: 2px solid var(--border-color);
            color: var(--text-primary);
            font-weight: 500;
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-outline:hover {
            border-color: #f59e0b;
            color: #f59e0b;
            background: rgba(245, 158, 11, 0.08);
        }

        .mobile-menu-btn {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 4px;
            background: none;
            border: none;
        }

        .mobile-menu-btn span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--text-primary);
            border-radius: 3px;
            transition: var(--transition);
        }

        .mobile-menu-btn.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }

        .mobile-menu-btn.active span:nth-child(2) {
            opacity: 0;
        }

        .mobile-menu-btn.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        .mobile-drawer {
            display: none;
            position: fixed;
            top: 72px;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(15, 23, 42, 0.98);
            backdrop-filter: blur(20px);
            padding: 32px 24px;
            z-index: 999;
            flex-direction: column;
            gap: 16px;
            overflow-y: auto;
            border-top: 1px solid var(--border-color);
        }

        .mobile-drawer.open {
            display: flex;
        }

        .mobile-drawer .nav-link {
            font-size: 1.15rem;
            padding: 12px 0;
            border-bottom: 1px solid var(--border-color);
        }

        .mobile-drawer .btn-accent {
            margin-top: 16px;
            text-align: center;
            justify-content: center;
            padding: 14px 24px;
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }

            .mobile-menu-btn {
                display: flex;
            }
        }

        /* Article Hero */
        .article-hero {
            padding: 140px 0 60px;
            background: linear-gradient(135deg, #0f172a 0%, #1a2332 50%, #0f172a 100%);
            position: relative;
            overflow: hidden;
        }

        .article-hero::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -30%;
            width: 80%;
            height: 80%;
            background: radial-gradient(ellipse, rgba(245, 158, 11, 0.06), transparent 70%);
            pointer-events: none;
        }

        .article-hero::after {
            content: '';
            position: absolute;
            bottom: -40%;
            left: -20%;
            width: 60%;
            height: 60%;
            background: radial-gradient(ellipse, rgba(59, 130, 246, 0.05), transparent 70%);
            pointer-events: none;
        }

        .article-hero .container {
            position: relative;
            z-index: 1;
        }

        .article-breadcrumb {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.875rem;
            color: var(--text-muted);
            margin-bottom: 24px;
            flex-wrap: wrap;
        }

        .article-breadcrumb a {
            color: var(--text-secondary);
            transition: var(--transition);
        }

        .article-breadcrumb a:hover {
            color: #f59e0b;
        }

        .article-breadcrumb .sep {
            color: var(--text-muted);
            font-size: 0.7rem;
        }

        .article-breadcrumb .current {
            color: #f59e0b;
        }

        .article-category-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(245, 158, 11, 0.12);
            color: #fbbf24;
            font-size: 0.8rem;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 20px;
            margin-bottom: 16px;
            border: 1px solid rgba(245, 158, 11, 0.2);
        }

        .article-title {
            font-size: 2.5rem;
            font-weight: 800;
            line-height: 1.25;
            color: var(--text-primary);
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }

        .article-meta {
            display: flex;
            align-items: center;
            gap: 24px;
            flex-wrap: wrap;
            color: var(--text-secondary);
            font-size: 0.9rem;
        }

        .article-meta-item {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .article-meta-item i {
            color: var(--text-muted);
            font-size: 0.85rem;
        }

        /* Article Main */
        .article-main {
            padding: 60px 0 80px;
        }

        .article-content {
            max-width: 820px;
            margin: 0 auto;
        }

        .article-body {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 48px 52px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-card);
        }

        .article-body p {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text-secondary);
            margin-bottom: 20px;
        }

        .article-body h2 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-top: 40px;
            margin-bottom: 16px;
            letter-spacing: -0.3px;
        }

        .article-body h3 {
            font-size: 1.25rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-top: 32px;
            margin-bottom: 12px;
        }

        .article-body ul,
        .article-body ol {
            margin: 16px 0;
            padding-left: 24px;
            color: var(--text-secondary);
        }

        .article-body li {
            margin-bottom: 8px;
            line-height: 1.7;
        }

        .article-body blockquote {
            border-left: 4px solid #f59e0b;
            padding: 16px 24px;
            margin: 24px 0;
            background: rgba(245, 158, 11, 0.05);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
            font-style: italic;
        }

        .article-body a {
            color: #60a5fa;
            text-decoration: underline;
            text-underline-offset: 3px;
        }

        .article-body a:hover {
            color: #93c5fd;
        }

        .article-body img {
            border-radius: var(--radius-sm);
            margin: 24px 0;
            box-shadow: var(--shadow-card);
        }

        .article-body code {
            background: var(--bg-elevated);
            padding: 2px 8px;
            border-radius: 6px;
            font-size: 0.9em;
            color: #fbbf24;
        }

        .article-body pre {
            background: var(--bg-elevated);
            padding: 20px 24px;
            border-radius: var(--radius-sm);
            overflow-x: auto;
            margin: 20px 0;
            border: 1px solid var(--border-color);
        }

        .article-body pre code {
            background: none;
            padding: 0;
            color: var(--text-secondary);
        }

        .article-footer-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            margin-top: 40px;
            padding-top: 28px;
            border-top: 1px solid var(--border-color);
        }

        .article-tags {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }

        .article-tag {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            background: var(--bg-elevated);
            color: var(--text-secondary);
            font-size: 0.8rem;
            padding: 4px 14px;
            border-radius: 16px;
            transition: var(--transition);
            border: 1px solid var(--border-color);
        }

        .article-tag:hover {
            background: rgba(245, 158, 11, 0.1);
            color: #fbbf24;
            border-color: rgba(245, 158, 11, 0.3);
        }

        .article-share {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .article-share a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--bg-elevated);
            color: var(--text-secondary);
            font-size: 0.9rem;
            transition: var(--transition);
            border: 1px solid var(--border-color);
        }

        .article-share a:hover {
            background: rgba(245, 158, 11, 0.15);
            color: #fbbf24;
            border-color: rgba(245, 158, 11, 0.3);
            transform: translateY(-2px);
        }

        /* Article Not Found */
        .article-not-found {
            text-align: center;
            padding: 80px 24px;
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-card);
            max-width: 600px;
            margin: 0 auto;
        }

        .article-not-found .icon {
            font-size: 4rem;
            color: var(--text-muted);
            margin-bottom: 24px;
        }

        .article-not-found h2 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .article-not-found p {
            color: var(--text-secondary);
            margin-bottom: 28px;
            font-size: 1.05rem;
        }

        /* Related Posts */
        .related-posts {
            background: var(--bg-body);
            padding: 60px 0;
            border-top: 1px solid var(--border-color);
        }

        .related-posts .section-title {
            font-size: 1.6rem;
            font-weight: 700;
            margin-bottom: 36px;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .related-posts .section-title i {
            color: #f59e0b;
        }

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

        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
        }

        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(245, 158, 11, 0.2);
        }

        .related-card .card-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            border-bottom: 1px solid var(--border-color);
        }

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

        .related-card .card-cat {
            font-size: 0.75rem;
            color: #fbbf24;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: 8px;
        }

        .related-card .card-title {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-primary);
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: var(--transition);
        }

        .related-card:hover .card-title {
            color: #fbbf24;
        }

        .related-card .card-date {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-top: 10px;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        /* Footer */
        .footer {
            background: #0b1120;
            border-top: 1px solid var(--border-color);
            padding: 60px 0 30px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand .logo-text {
            font-size: 1.35rem;
            margin-bottom: 16px;
            display: inline-block;
        }

        .footer-brand p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.7;
            margin-top: 12px;
        }

        .footer h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 10px;
        }

        .footer h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 32px;
            height: 2.5px;
            background: linear-gradient(90deg, #f59e0b, #f97316);
            border-radius: 3px;
        }

        .footer ul {
            list-style: none;
            padding: 0;
        }

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

        .footer ul li a {
            color: var(--text-muted);
            font-size: 0.9rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .footer ul li a:hover {
            color: #fbbf24;
            transform: translateX(4px);
        }

        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 24px;
            text-align: center;
            color: var(--text-muted);
            font-size: 0.85rem;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .article-title {
                font-size: 2rem;
            }

            .article-body {
                padding: 36px 32px;
            }

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

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            .article-hero {
                padding: 120px 0 40px;
            }

            .article-title {
                font-size: 1.6rem;
            }

            .article-meta {
                gap: 14px;
                font-size: 0.82rem;
            }

            .article-body {
                padding: 24px 18px;
                border-radius: var(--radius-sm);
            }

            .article-body p {
                font-size: 0.95rem;
            }

            .article-body h2 {
                font-size: 1.3rem;
            }

            .article-body h3 {
                font-size: 1.1rem;
            }

            .article-footer-meta {
                flex-direction: column;
                align-items: flex-start;
            }

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

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

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .footer-brand {
                order: -1;
            }
        }

        @media (max-width: 520px) {
            .article-title {
                font-size: 1.35rem;
            }

            .article-body {
                padding: 18px 14px;
            }

            .article-breadcrumb {
                font-size: 0.78rem;
            }

            .article-category-badge {
                font-size: 0.72rem;
                padding: 3px 12px;
            }
        }

        /* Animations */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .animate-fade-in {
            animation: fadeInUp 0.6s ease forwards;
        }

        .animate-fade-in-delay {
            animation: fadeInUp 0.6s ease 0.2s forwards;
            opacity: 0;
        }

        /* Focus visible */
        *:focus-visible {
            outline: 2px solid #f59e0b;
            outline-offset: 3px;
            border-radius: 4px;
        }

        /* Scrollbar */
        ::-webkit-scrollbar {
            width: 8px;
        }

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

        ::-webkit-scrollbar-thumb {
            background: var(--bg-elevated);
            border-radius: 8px;
        }

        ::-webkit-scrollbar-thumb:hover {
            background: var(--text-muted);
        }

/* roulang page: category1 */
/* ===== :root 设计变量 ===== */
        :root {
            --primary: #eab308;
            --primary-dark: #ca8a04;
            --primary-light: #fef08a;
            --accent: #f97316;
            --accent-dark: #ea580c;
            --bg-dark: #0f0f1a;
            --bg-card: #1a1a2e;
            --bg-section: #14142a;
            --text-white: #f8fafc;
            --text-muted: #94a3b8;
            --text-dim: #64748b;
            --border-subtle: rgba(234, 179, 8, 0.15);
            --border-card: rgba(234, 179, 8, 0.08);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.45);
            --shadow-hover: 0 14px 40px rgba(234, 179, 8, 0.12);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
        }
        body {
            font-family: var(--font-sans);
            background: var(--bg-dark);
            color: var(--text-white);
            line-height: 1.7;
            min-height: 100vh;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: 1rem;
            outline: none;
            transition: var(--transition);
        }
        button:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
        }
        ul,
        ol {
            list-style: none;
        }

        /* ===== Container ===== */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== Logo ===== */
        .logo-text {
            font-size: 1.6rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.5px;
            line-height: 1.2;
        }
        .logo-sub {
            font-size: 0.7rem;
            font-weight: 500;
            color: var(--text-muted);
            letter-spacing: 2px;
            text-transform: uppercase;
            -webkit-text-fill-color: var(--text-muted);
            background: none;
        }

        /* ===== Header / Nav ===== */
        .header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(15, 15, 26, 0.88);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-subtle);
            padding: 12px 0;
        }
        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        .nav-link {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-muted);
            padding: 6px 2px;
            border-bottom: 2px solid transparent;
            transition: var(--transition);
            position: relative;
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--primary);
            border-bottom-color: var(--primary);
        }
        .nav-link.active {
            color: var(--primary);
            border-bottom-color: var(--primary);
            font-weight: 600;
        }
        .btn-accent {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--accent), #f59e0b);
            color: #0f0f1a;
            font-weight: 700;
            border: none;
            border-radius: var(--radius-md);
            padding: 10px 24px;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 4px 16px rgba(249, 115, 22, 0.3);
        }
        .btn-accent:hover {
            transform: translateY(-2px) scale(1.02);
            box-shadow: 0 8px 28px rgba(249, 115, 22, 0.45);
        }
        .btn-accent:active {
            transform: scale(0.97);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border: 1.5px solid var(--primary);
            color: var(--primary);
            background: transparent;
            font-weight: 600;
            border-radius: var(--radius-md);
            padding: 10px 24px;
            cursor: pointer;
            transition: var(--transition);
        }
        .btn-outline:hover {
            background: rgba(234, 179, 8, 0.12);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(234, 179, 8, 0.15);
        }

        /* ===== 移动端菜单按钮 ===== */
        .menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-white);
            font-size: 1.6rem;
            cursor: pointer;
            padding: 4px 8px;
        }
        @media (max-width: 1024px) {
            .nav-links {
                gap: 20px;
            }
            .nav-link {
                font-size: 0.88rem;
            }
        }
        @media (max-width: 768px) {
            .menu-toggle {
                display: block;
            }
            .nav-links {
                display: none;
                flex-direction: column;
                width: 100%;
                padding: 20px 0 12px;
                gap: 16px;
                border-top: 1px solid var(--border-subtle);
                margin-top: 12px;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-link {
                font-size: 1.05rem;
                padding: 8px 0;
                border-bottom: none;
            }
            .nav-link.active {
                border-bottom: none;
                color: var(--primary);
            }
            .nav-links .btn-accent {
                width: 100%;
                justify-content: center;
                margin-top: 4px;
            }
        }

        /* ===== Hero / Banner（分类页顶图） ===== */
        .category-hero {
            position: relative;
            min-height: 340px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 80px 24px 60px;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            isolation: isolate;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 15, 26, 0.82), rgba(20, 20, 42, 0.88));
            z-index: 1;
        }
        .category-hero * {
            position: relative;
            z-index: 2;
        }
        .category-hero h1 {
            font-size: 3rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 16px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .category-hero p {
            font-size: 1.15rem;
            color: var(--text-muted);
            max-width: 640px;
            margin: 0 auto 24px;
        }
        .category-hero .breadcrumb {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            font-size: 0.9rem;
            color: var(--text-dim);
            margin-bottom: 12px;
        }
        .category-hero .breadcrumb a {
            color: var(--text-muted);
        }
        .category-hero .breadcrumb a:hover {
            color: var(--primary);
        }
        .category-hero .breadcrumb .sep {
            color: var(--text-dim);
        }
        .category-hero .breadcrumb .current {
            color: var(--primary);
            font-weight: 600;
        }
        @media (max-width: 768px) {
            .category-hero {
                min-height: 260px;
                padding: 60px 16px 40px;
            }
            .category-hero h1 {
                font-size: 2rem;
            }
            .category-hero p {
                font-size: 1rem;
            }
        }
        @media (max-width: 520px) {
            .category-hero h1 {
                font-size: 1.6rem;
            }
            .category-hero p {
                font-size: 0.92rem;
            }
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: 72px 0;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            text-align: center;
            margin-bottom: 12px;
            color: var(--text-white);
        }
        .section-sub {
            text-align: center;
            color: var(--text-muted);
            max-width: 580px;
            margin: 0 auto 48px;
            font-size: 1.05rem;
        }
        .section-title span {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        @media (max-width: 768px) {
            .section {
                padding: 48px 0;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .section-sub {
                font-size: 0.95rem;
                margin-bottom: 32px;
            }
        }

        /* ===== 卡片网格 ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 28px;
        }
        .card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-card);
            padding: 24px;
            transition: var(--transition);
            box-shadow: var(--shadow-card);
            display: flex;
            flex-direction: column;
        }
        .card:hover {
            transform: translateY(-6px);
            border-color: rgba(234, 179, 8, 0.25);
            box-shadow: var(--shadow-hover);
        }
        .card .card-img {
            border-radius: var(--radius-sm);
            margin-bottom: 18px;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            background: var(--bg-section);
        }
        .card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-white);
        }
        .card p {
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.6;
            flex: 1;
        }
        .card .card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-top: 16px;
            font-size: 0.82rem;
            color: var(--text-dim);
            border-top: 1px solid var(--border-card);
            padding-top: 14px;
        }
        .card .card-meta i {
            margin-right: 4px;
        }
        .card .badge {
            display: inline-block;
            background: rgba(234, 179, 8, 0.15);
            color: var(--primary);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 2px 12px;
            border-radius: 20px;
            margin-bottom: 12px;
            align-self: flex-start;
        }
        .card .badge-hot {
            background: rgba(249, 115, 22, 0.2);
            color: var(--accent);
        }
        .card .badge-new {
            background: rgba(34, 197, 94, 0.15);
            color: #22c55e;
        }

        /* ===== 标签 / Tag ===== */
        .tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            margin-bottom: 40px;
        }
        .tag {
            display: inline-block;
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            padding: 6px 20px;
            border-radius: 30px;
            font-size: 0.88rem;
            font-weight: 500;
            color: var(--text-muted);
            transition: var(--transition);
            cursor: pointer;
        }
        .tag:hover,
        .tag.active {
            background: rgba(234, 179, 8, 0.15);
            border-color: var(--primary);
            color: var(--primary);
        }

        /* ===== 攻略分类区块 ===== */
        .category-block {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 24px;
        }
        .category-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-card);
            padding: 28px 24px;
            text-align: center;
            transition: var(--transition);
        }
        .category-item:hover {
            transform: translateY(-4px);
            border-color: rgba(234, 179, 8, 0.2);
            box-shadow: var(--shadow-hover);
        }
        .category-item .icon {
            font-size: 2.2rem;
            margin-bottom: 14px;
            color: var(--primary);
        }
        .category-item h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .category-item p {
            color: var(--text-muted);
            font-size: 0.88rem;
        }

        /* ===== 技巧列表 ===== */
        .tips-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 20px;
        }
        .tip-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            background: var(--bg-card);
            padding: 20px 22px;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-card);
            transition: var(--transition);
        }
        .tip-item:hover {
            border-color: rgba(234, 179, 8, 0.2);
            transform: translateY(-3px);
        }
        .tip-item .num {
            flex-shrink: 0;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(234, 179, 8, 0.12);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.1rem;
        }
        .tip-item h5 {
            font-weight: 600;
            margin-bottom: 4px;
        }
        .tip-item p {
            color: var(--text-muted);
            font-size: 0.88rem;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 720px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-md);
            padding: 0 22px;
            transition: var(--transition);
            overflow: hidden;
        }
        .faq-item summary {
            padding: 18px 0;
            font-weight: 600;
            font-size: 1.02rem;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            list-style: none;
            color: var(--text-white);
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary::after {
            content: '\f107';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 1.1rem;
            color: var(--primary);
            transition: var(--transition);
        }
        .faq-item[open] summary::after {
            transform: rotate(180deg);
        }
        .faq-item .faq-answer {
            padding: 0 0 20px;
            color: var(--text-muted);
            line-height: 1.7;
            font-size: 0.92rem;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, rgba(234, 179, 8, 0.06), rgba(249, 115, 22, 0.06));
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
            text-align: center;
            padding: 64px 24px;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .cta-section p {
            color: var(--text-muted);
            max-width: 500px;
            margin: 0 auto 28px;
            font-size: 1.05rem;
        }
        .cta-section .btn-accent {
            font-size: 1.05rem;
            padding: 14px 40px;
        }
        @media (max-width: 768px) {
            .cta-section {
                padding: 40px 16px;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--bg-card);
            border-top: 1px solid var(--border-subtle);
            padding: 56px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 36px;
        }
        .footer-brand .logo-text {
            font-size: 1.4rem;
            margin-bottom: 12px;
            display: inline-block;
        }
        .footer-brand p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 320px;
        }
        .footer h4 {
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-white);
            letter-spacing: 0.5px;
        }
        .footer ul li {
            margin-bottom: 10px;
        }
        .footer ul li a {
            color: var(--text-muted);
            font-size: 0.88rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .footer ul li a:hover {
            color: var(--primary);
        }
        .footer-bottom {
            border-top: 1px solid var(--border-card);
            padding-top: 24px;
            text-align: center;
            color: var(--text-dim);
            font-size: 0.85rem;
        }
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 640px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-brand p {
                max-width: 100%;
            }
        }

        /* ===== 辅助 ===== */
        .text-gradient {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .mt-2 {
            margin-top: 8px;
        }
        .mt-4 {
            margin-top: 16px;
        }
        .mt-8 {
            margin-top: 32px;
        }
        .gap-4 {
            gap: 16px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .text-center {
            text-align: center;
        }
        .bg-section-alt {
            background: var(--bg-section);
        }
        .border-section {
            border-top: 1px solid var(--border-card);
            border-bottom: 1px solid var(--border-card);
        }

        /* ===== 响应式补丁 ===== */
        @media (max-width: 520px) {
            .card-grid {
                grid-template-columns: 1fr;
            }
            .tips-list {
                grid-template-columns: 1fr;
            }
            .category-block {
                grid-template-columns: 1fr 1fr;
            }
            .card {
                padding: 18px;
            }
        }
        @media (max-width: 400px) {
            .category-block {
                grid-template-columns: 1fr;
            }
        }