/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #dc2626;
            --primary-dark: #b91c1c;
            --primary-light: #fef2f2;
            --secondary: #f97316;
            --secondary-light: #fff7ed;
            --dark: #0f172a;
            --dark-secondary: #1e293b;
            --gray-50: #f8fafc;
            --gray-100: #f1f5f9;
            --gray-200: #e2e8f0;
            --gray-300: #cbd5e1;
            --gray-400: #94a3b8;
            --gray-500: #64748b;
            --gray-600: #475569;
            --gray-700: #334155;
            --gray-800: #1e293b;
            --gray-900: #0f172a;
            --text-primary: #0f172a;
            --text-secondary: #475569;
            --text-muted: #94a3b8;
            --border-color: #e2e8f0;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06), 0 1px 2px rgba(15, 23, 42, 0.04);
            --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.08), 0 2px 4px rgba(15, 23, 42, 0.04);
            --shadow-lg: 0 12px 40px rgba(15, 23, 42, 0.1), 0 4px 12px rgba(15, 23, 42, 0.06);
            --shadow-xl: 0 24px 60px rgba(15, 23, 42, 0.12);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            margin: 0;
            padding: 0;
            font-family: var(--font-sans);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text-primary);
            background: #ffffff;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        a:focus-visible {
            outline: 3px solid var(--primary);
            outline-offset: 2px;
            border-radius: var(--radius-sm);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        button:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 3px solid var(--primary);
            outline-offset: 2px;
        }
        ul,
        ol {
            padding-left: 1.25rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.25;
            color: var(--text-primary);
            margin-top: 0;
        }
        p {
            margin-top: 0;
            color: var(--text-secondary);
        }

        /* ===== Container ===== */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        @media (max-width: 576px) {
            .container {
                padding: 0 1rem;
            }
        }

        /* ===== Section ===== */
        .section-padding {
            padding: 5rem 0;
        }
        @media (max-width: 768px) {
            .section-padding {
                padding: 3rem 0;
            }
        }
        .section-title {
            font-size: 2.25rem;
            font-weight: 800;
            margin-bottom: 0.75rem;
            letter-spacing: -0.02em;
        }
        .section-subtitle {
            font-size: 1.125rem;
            color: var(--text-secondary);
            max-width: 640px;
            margin: 0 auto 3rem;
            text-align: center;
        }
        @media (max-width: 768px) {
            .section-title {
                font-size: 1.75rem;
            }
            .section-subtitle {
                font-size: 1rem;
                margin-bottom: 2rem;
            }
        }

        /* ===== Top Bar ===== */
        .top-bar {
            background: var(--dark-secondary);
            color: var(--gray-300);
            font-size: 0.8125rem;
            padding: 0.5rem 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }
        .top-bar .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .top-bar a {
            color: var(--gray-300);
            transition: color var(--transition);
        }
        .top-bar a:hover {
            color: #ffffff;
        }
        .top-bar .top-bar-left {
            display: flex;
            align-items: center;
            gap: 1.25rem;
        }
        .top-bar .top-bar-left i {
            margin-right: 0.375rem;
            color: var(--secondary);
        }
        .top-bar .top-bar-right {
            display: flex;
            align-items: center;
            gap: 1rem;
        }
        .top-bar .top-bar-right .badge-top {
            background: var(--primary);
            color: #fff;
            padding: 0.125rem 0.625rem;
            border-radius: 20px;
            font-size: 0.7rem;
            font-weight: 600;
            letter-spacing: 0.3px;
        }
        @media (max-width: 640px) {
            .top-bar .container {
                justify-content: center;
                text-align: center;
            }
            .top-bar .top-bar-left {
                flex-wrap: wrap;
                justify-content: center;
            }
            .top-bar .top-bar-right {
                flex-wrap: wrap;
                justify-content: center;
            }
        }

        /* ===== Header / Nav ===== */
        .main-header {
            background: #ffffff;
            box-shadow: var(--shadow-sm);
            position: sticky;
            top: 0;
            z-index: 1050;
            transition: box-shadow var(--transition);
        }
        .main-header.scrolled {
            box-shadow: var(--shadow-md);
        }
        .main-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 4rem;
        }
        .site-logo {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--dark);
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            text-decoration: none;
            flex-shrink: 0;
        }
        .site-logo:hover {
            color: var(--primary);
        }
        .site-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--primary);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.1rem;
            font-weight: 700;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 0.25rem;
        }
        .main-nav a {
            padding: 0.5rem 1rem;
            border-radius: var(--radius-sm);
            color: var(--text-secondary);
            font-weight: 500;
            font-size: 0.9375rem;
            transition: all var(--transition);
            position: relative;
            text-decoration: none;
        }
        .main-nav a:hover {
            color: var(--primary);
            background: var(--primary-light);
        }
        .main-nav a.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 600;
        }
        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 1rem;
            right: 1rem;
            height: 3px;
            background: var(--primary);
            border-radius: 2px;
        }
        .nav-cta {
            background: var(--primary) !important;
            color: #fff !important;
            padding: 0.5rem 1.25rem !important;
            border-radius: var(--radius-sm) !important;
            font-weight: 600 !important;
            margin-left: 0.5rem;
        }
        .nav-cta:hover {
            background: var(--primary-dark) !important;
            color: #fff !important;
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--text-primary);
            cursor: pointer;
            padding: 0.25rem;
            border-radius: var(--radius-sm);
        }
        .nav-toggle:hover {
            background: var(--gray-100);
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .main-nav {
                display: none;
                position: absolute;
                top: 4rem;
                left: 0;
                right: 0;
                background: #ffffff;
                flex-direction: column;
                padding: 1rem;
                box-shadow: var(--shadow-lg);
                border-top: 1px solid var(--border-color);
                gap: 0.25rem;
                border-radius: 0 0 var(--radius-md) var(--radius-md);
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 0.75rem 1rem;
                width: 100%;
                border-radius: var(--radius-sm);
            }
            .main-nav a.active::after {
                display: none;
            }
            .main-nav a.active {
                border-left: 4px solid var(--primary);
            }
            .nav-cta {
                margin-left: 0;
                margin-top: 0.5rem;
                text-align: center;
            }
            .main-header .container {
                height: 3.75rem;
            }
            .site-logo {
                font-size: 1.25rem;
            }
            .site-logo .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 0.9rem;
            }
        }

        /* ===== Hero ===== */
        .hero {
            background: linear-gradient(135deg, var(--dark) 0%, var(--dark-secondary) 100%);
            color: #ffffff;
            padding: 5rem 0 4rem;
            position: relative;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -20%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(220, 38, 38, 0.15) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(249, 115, 22, 0.1) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero .container {
            position: relative;
            z-index: 1;
        }
        .hero .row {
            align-items: center;
        }
        .hero-content h1 {
            font-size: 3.25rem;
            font-weight: 800;
            line-height: 1.1;
            color: #ffffff;
            margin-bottom: 1.25rem;
            letter-spacing: -0.03em;
        }
        .hero-content h1 .highlight {
            color: var(--secondary);
        }
        .hero-content p {
            font-size: 1.2rem;
            color: var(--gray-300);
            max-width: 540px;
            margin-bottom: 2rem;
            line-height: 1.7;
        }
        .hero-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
        }
        .hero-buttons .btn-hero {
            padding: 0.75rem 2rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .btn-hero-primary {
            background: var(--primary);
            color: #fff;
            border: 2px solid var(--primary);
        }
        .btn-hero-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
        }
        .btn-hero-secondary {
            background: transparent;
            color: #fff;
            border: 2px solid var(--gray-400);
        }
        .btn-hero-secondary:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: #fff;
            color: #fff;
            transform: translateY(-2px);
        }
        .hero-stats {
            display: flex;
            gap: 2.5rem;
            margin-top: 2.5rem;
            padding-top: 2rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }
        .hero-stats .stat-item {
            text-align: center;
        }
        .hero-stats .stat-number {
            font-size: 1.75rem;
            font-weight: 800;
            color: #ffffff;
            display: block;
        }
        .hero-stats .stat-label {
            font-size: 0.875rem;
            color: var(--gray-400);
            margin-top: 0.125rem;
        }
        .hero-image {
            text-align: center;
            position: relative;
        }
        .hero-image .img-placeholder {
            width: 100%;
            max-width: 480px;
            margin: 0 auto;
            border-radius: var(--radius-lg);
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            padding: 2rem;
            aspect-ratio: 4/3;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 4rem;
            color: var(--secondary);
            backdrop-filter: blur(8px);
        }
        @media (max-width: 992px) {
            .hero {
                padding: 3.5rem 0 3rem;
            }
            .hero-content h1 {
                font-size: 2.5rem;
            }
            .hero-content p {
                font-size: 1.05rem;
            }
            .hero-stats {
                gap: 1.5rem;
                flex-wrap: wrap;
            }
            .hero-image {
                margin-top: 2rem;
            }
            .hero-image .img-placeholder {
                max-width: 100%;
                font-size: 3rem;
                padding: 1.5rem;
            }
        }
        @media (max-width: 576px) {
            .hero-content h1 {
                font-size: 2rem;
            }
            .hero-buttons .btn-hero {
                width: 100%;
                justify-content: center;
            }
            .hero-stats {
                justify-content: center;
            }
            .hero-stats .stat-number {
                font-size: 1.5rem;
            }
        }

        /* ===== Features / 核心优势 ===== */
        .features-section {
            background: var(--gray-50);
            border-bottom: 1px solid var(--border-color);
        }
        .feature-card {
            background: #ffffff;
            border-radius: var(--radius-md);
            padding: 2rem 1.75rem;
            height: 100%;
            border: 1px solid var(--border-color);
            transition: all var(--transition);
            text-align: center;
        }
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }
        .feature-card .icon-wrap {
            width: 60px;
            height: 60px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin: 0 auto 1.25rem;
            color: #fff;
        }
        .feature-card .icon-wrap.icon-red {
            background: var(--primary);
        }
        .feature-card .icon-wrap.icon-orange {
            background: var(--secondary);
        }
        .feature-card .icon-wrap.icon-dark {
            background: var(--dark);
        }
        .feature-card h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
        }
        .feature-card p {
            font-size: 0.9375rem;
            color: var(--text-secondary);
            margin-bottom: 0;
        }

        /* ===== Category / 分类入口 ===== */
        .category-section {
            background: #ffffff;
        }
        .category-card {
            background: var(--gray-50);
            border-radius: var(--radius-md);
            padding: 2rem 1.5rem;
            text-align: center;
            border: 1px solid var(--border-color);
            transition: all var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            text-decoration: none;
            color: var(--text-primary);
        }
        .category-card:hover {
            background: var(--primary-light);
            border-color: var(--primary);
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
            color: var(--text-primary);
        }
        .category-card .cat-icon {
            font-size: 2.5rem;
            color: var(--primary);
            margin-bottom: 1rem;
            transition: transform var(--transition);
        }
        .category-card:hover .cat-icon {
            transform: scale(1.1);
        }
        .category-card h4 {
            font-size: 1.125rem;
            font-weight: 700;
            margin-bottom: 0.375rem;
        }
        .category-card p {
            font-size: 0.875rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }
        .category-card .cat-badge {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 0.7rem;
            font-weight: 600;
            padding: 0.2rem 0.75rem;
            border-radius: 20px;
            margin-top: 0.75rem;
            letter-spacing: 0.3px;
        }

        /* ===== Latest News / 最新资讯 (CMS) ===== */
        .news-section {
            background: var(--gray-50);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }
        .news-card {
            background: #ffffff;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            padding: 1.5rem;
            transition: all var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
            border-color: transparent;
        }
        .news-card .news-meta {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            font-size: 0.8125rem;
            color: var(--text-muted);
            margin-bottom: 0.75rem;
            flex-wrap: wrap;
        }
        .news-card .news-meta .news-cat {
            background: var(--primary-light);
            color: var(--primary);
            padding: 0.125rem 0.625rem;
            border-radius: 20px;
            font-weight: 600;
            font-size: 0.7rem;
        }
        .news-card .news-meta .news-date i {
            margin-right: 0.25rem;
        }
        .news-card h3 {
            font-size: 1.125rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
            line-height: 1.4;
        }
        .news-card h3 a {
            color: var(--text-primary);
            text-decoration: none;
        }
        .news-card h3 a:hover {
            color: var(--primary);
        }
        .news-card p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-bottom: 1rem;
            flex-grow: 1;
        }
        .news-card .news-readmore {
            font-size: 0.875rem;
            font-weight: 600;
            color: var(--primary);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 0.375rem;
        }
        .news-card .news-readmore:hover {
            color: var(--primary-dark);
            gap: 0.625rem;
        }
        .news-empty {
            text-align: center;
            padding: 3rem 1rem;
            color: var(--text-muted);
            background: #ffffff;
            border-radius: var(--radius-md);
            border: 1px dashed var(--border-color);
        }
        .news-empty i {
            font-size: 2.5rem;
            display: block;
            margin-bottom: 1rem;
            color: var(--gray-300);
        }

        /* ===== Stats / 数据统计 ===== */
        .stats-section {
            background: var(--dark);
            color: #ffffff;
            position: relative;
            overflow: hidden;
        }
        .stats-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.02'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
            pointer-events: none;
        }
        .stats-section .container {
            position: relative;
            z-index: 1;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
            text-align: center;
        }
        .stats-grid .stat-item {
            padding: 1.5rem 0;
        }
        .stats-grid .stat-number {
            font-size: 2.75rem;
            font-weight: 800;
            color: #ffffff;
            line-height: 1.1;
            letter-spacing: -0.03em;
        }
        .stats-grid .stat-number .suffix {
            font-size: 1.25rem;
            color: var(--secondary);
            font-weight: 600;
        }
        .stats-grid .stat-label {
            font-size: 1rem;
            color: var(--gray-400);
            margin-top: 0.5rem;
            font-weight: 500;
        }
        .stats-grid .stat-icon {
            font-size: 1.75rem;
            color: var(--secondary);
            margin-bottom: 0.75rem;
        }
        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 1.5rem;
            }
            .stats-grid .stat-number {
                font-size: 2.25rem;
            }
        }
        @media (max-width: 480px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1rem;
            }
        }

        /* ===== Process / 服务流程 ===== */
        .process-section {
            background: #ffffff;
        }
        .process-step {
            text-align: center;
            padding: 1.5rem 1rem;
            position: relative;
        }
        .process-step .step-number {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.125rem;
            font-weight: 700;
            margin: 0 auto 1.25rem;
            box-shadow: 0 4px 14px rgba(220, 38, 38, 0.25);
        }
        .process-step h4 {
            font-size: 1.125rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
        }
        .process-step p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-bottom: 0;
            max-width: 260px;
            margin-left: auto;
            margin-right: auto;
        }
        .process-connector {
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--gray-300);
        }
        @media (max-width: 768px) {
            .process-connector {
                transform: rotate(90deg);
                padding: 0.5rem 0;
            }
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--gray-50);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }
        .faq-item {
            background: #ffffff;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            padding: 1.25rem 1.5rem;
            margin-bottom: 0.75rem;
            transition: all var(--transition);
            cursor: pointer;
        }
        .faq-item:hover {
            border-color: var(--gray-300);
            box-shadow: var(--shadow-sm);
        }
        .faq-item .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-primary);
            gap: 1rem;
        }
        .faq-item .faq-question i {
            color: var(--primary);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        .faq-item .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding-top: 0;
            color: var(--text-secondary);
            font-size: 0.9375rem;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding-top: 1rem;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            color: #ffffff;
            text-align: center;
            padding: 4.5rem 0;
        }
        .cta-section h2 {
            font-size: 2.25rem;
            font-weight: 800;
            color: #ffffff;
            margin-bottom: 0.75rem;
        }
        .cta-section p {
            font-size: 1.125rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 600px;
            margin: 0 auto 2rem;
        }
        .cta-section .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.875rem 2.5rem;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 1.0625rem;
            background: #ffffff;
            color: var(--primary);
            border: none;
            transition: all var(--transition);
            text-decoration: none;
        }
        .cta-section .btn-cta:hover {
            background: var(--gray-100);
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
            color: var(--primary-dark);
        }
        .cta-section .btn-cta-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.4);
            margin-left: 1rem;
        }
        .cta-section .btn-cta-outline:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
            color: #fff;
        }
        @media (max-width: 576px) {
            .cta-section h2 {
                font-size: 1.75rem;
            }
            .cta-section .btn-cta {
                width: 100%;
                justify-content: center;
            }
            .cta-section .btn-cta-outline {
                margin-left: 0;
                margin-top: 0.75rem;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--dark);
            color: var(--gray-400);
            padding: 3.5rem 0 0;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }
        .site-footer h5 {
            font-size: 1rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 1.25rem;
        }
        .site-footer a {
            color: var(--gray-400);
            transition: color var(--transition);
            text-decoration: none;
        }
        .site-footer a:hover {
            color: #ffffff;
        }
        .site-footer .footer-logo {
            font-size: 1.375rem;
            font-weight: 800;
            color: #ffffff;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            margin-bottom: 1rem;
        }
        .site-footer .footer-logo .logo-icon-small {
            width: 30px;
            height: 30px;
            background: var(--primary);
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 0.85rem;
            font-weight: 700;
        }
        .site-footer .footer-desc {
            font-size: 0.9rem;
            color: var(--gray-500);
            max-width: 320px;
            line-height: 1.7;
        }
        .site-footer .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer .footer-links li {
            margin-bottom: 0.5rem;
        }
        .site-footer .footer-links li a {
            font-size: 0.9rem;
        }
        .site-footer .footer-contact li {
            font-size: 0.9rem;
            margin-bottom: 0.5rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .site-footer .footer-contact li i {
            width: 1rem;
            color: var(--secondary);
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 1.25rem 0;
            margin-top: 2.5rem;
            text-align: center;
            font-size: 0.85rem;
            color: var(--gray-500);
        }
        .site-footer .footer-bottom a {
            color: var(--gray-400);
        }
        .site-footer .footer-bottom a:hover {
            color: #fff;
        }
        @media (max-width: 768px) {
            .site-footer {
                padding: 2.5rem 0 0;
            }
            .site-footer .footer-bottom {
                margin-top: 1.5rem;
            }
        }

        /* ===== Buttons / Badges / Tags ===== */
        .badge-custom {
            display: inline-block;
            padding: 0.25em 0.75em;
            font-size: 0.75rem;
            font-weight: 600;
            border-radius: 20px;
            background: var(--primary-light);
            color: var(--primary);
        }
        .badge-custom-outline {
            background: transparent;
            border: 1px solid var(--primary);
            color: var(--primary);
        }
        .tag {
            display: inline-block;
            padding: 0.2rem 0.75rem;
            font-size: 0.75rem;
            border-radius: var(--radius-sm);
            background: var(--gray-100);
            color: var(--text-secondary);
            margin: 0.25rem;
            transition: all var(--transition);
            text-decoration: none;
        }
        .tag:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

        /* ===== Divider ===== */
        .divider {
            width: 60px;
            height: 4px;
            background: var(--primary);
            border-radius: 4px;
            margin: 0 auto 1.5rem;
        }
        .divider-left {
            margin: 0 0 1.5rem;
        }

        /* ===== Utility ===== */
        .text-primary-custom {
            color: var(--primary) !important;
        }
        .bg-primary-custom {
            background: var(--primary) !important;
        }
        .bg-light-custom {
            background: var(--gray-50) !important;
        }
        .rounded-custom {
            border-radius: var(--radius-md) !important;
        }
        .shadow-custom {
            box-shadow: var(--shadow-md) !important;
        }

        /* ===== Responsive fine-tune ===== */
        @media (max-width: 992px) {
            .section-padding {
                padding: 3.5rem 0;
            }
        }
        @media (max-width: 576px) {
            .hero-content h1 {
                font-size: 1.85rem;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .news-card h3 {
                font-size: 1rem;
            }
            .feature-card {
                padding: 1.5rem 1.25rem;
            }
            .stats-grid .stat-number {
                font-size: 1.75rem;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .cta-section p {
                font-size: 1rem;
            }
        }
        @media (max-width: 400px) {
            .top-bar {
                font-size: 0.7rem;
            }
            .site-logo {
                font-size: 1.1rem;
            }
            .hero-stats {
                gap: 1rem;
            }
            .hero-stats .stat-number {
                font-size: 1.25rem;
            }
        }

        /* ===== Accessibility ===== */
        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                transition-duration: 0.01ms !important;
            }
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }

        /* ===== Print ===== */
        @media print {
            .top-bar,
            .main-header,
            .cta-section,
            .site-footer {
                display: none;
            }
            .hero {
                padding: 1rem 0;
                background: #fff;
                color: #000;
            }
            .hero-content h1 {
                color: #000;
            }
            .hero-content p {
                color: #333;
            }
        }

/* roulang page: article */
:root {
            --primary: #dc2626;
            --primary-dark: #b91c1c;
            --primary-light: #fef2f2;
            --secondary: #1e293b;
            --accent: #f59e0b;
            --bg-body: #ffffff;
            --bg-alt: #f8fafc;
            --bg-card: #ffffff;
            --text-primary: #0f172a;
            --text-secondary: #475569;
            --text-muted: #94a3b8;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 16px;
            --shadow: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
            --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
            --shadow-lg: 0 12px 32px rgba(0,0,0,0.1);
            --transition: 0.25s ease;
            --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', 'Noto Sans', sans-serif;
        }
        *,
        *::before,
        *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-sans);
            color: var(--text-primary);
            background: var(--bg-body);
            line-height: 1.7;
            font-size: 1rem;
        }
        a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--primary-dark); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 1.25rem; }
        .main-header {
            background: #ffffff;
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 1040;
            box-shadow: 0 1px 4px rgba(0,0,0,0.04);
            transition: box-shadow var(--transition);
        }
        .main-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: -0.02em;
        }
        .site-logo:hover { color: var(--primary); }
        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-sm);
            font-weight: 800;
            font-size: 1.2rem;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.4rem;
            color: var(--text-primary);
            cursor: pointer;
            padding: 0.25rem 0.5rem;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }
        .nav-toggle:hover { background: var(--bg-alt); }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 0.25rem;
        }
        .main-nav a {
            padding: 0.5rem 1rem;
            border-radius: var(--radius-sm);
            color: var(--text-secondary);
            font-weight: 500;
            font-size: 0.95rem;
            transition: all var(--transition);
            position: relative;
        }
        .main-nav a:hover { color: var(--primary); background: var(--primary-light); }
        .main-nav a.active { color: var(--primary); background: var(--primary-light); font-weight: 600; }
        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
        }
        .main-nav .nav-cta {
            background: var(--primary);
            color: #fff !important;
            padding: 0.5rem 1.25rem;
            border-radius: 50px;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 0.4rem;
            margin-left: 0.5rem;
        }
        .main-nav .nav-cta:hover { background: var(--primary-dark); transform: translateY(-1px); box-shadow: var(--shadow-md); }
        @media (max-width: 768px) {
            .nav-toggle { display: block; }
            .main-nav {
                position: fixed;
                top: 68px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                padding: 1rem 1.25rem;
                gap: 0.25rem;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-lg);
                transform: translateY(-110%);
                opacity: 0;
                pointer-events: none;
                transition: all 0.35s ease;
                z-index: 1030;
            }
            .main-nav.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
            .main-nav a { width: 100%; padding: 0.75rem 1rem; }
            .main-nav a.active::after { display: none; }
            .main-nav .nav-cta { margin-left: 0; justify-content: center; }
        }
        .page-hero {
            background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
            padding: 3rem 0 2.5rem;
            color: #fff;
            margin-top: -1px;
        }
        .page-hero h1 {
            font-size: 2rem;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 0.5rem;
        }
        .page-hero .breadcrumb-custom {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
            font-size: 0.9rem;
            color: rgba(255,255,255,0.65);
            margin-bottom: 0.75rem;
        }
        .page-hero .breadcrumb-custom a { color: rgba(255,255,255,0.8); }
        .page-hero .breadcrumb-custom a:hover { color: #fff; }
        .page-hero .meta-line {
            display: flex;
            flex-wrap: wrap;
            gap: 1.25rem;
            font-size: 0.9rem;
            color: rgba(255,255,255,0.7);
        }
        .page-hero .meta-line i { margin-right: 0.35rem; }
        .page-hero .badge-category {
            display: inline-block;
            background: var(--accent);
            color: #1e293b;
            font-weight: 600;
            font-size: 0.8rem;
            padding: 0.2rem 1rem;
            border-radius: 50px;
        }
        @media (max-width: 576px) {
            .page-hero { padding: 2rem 0 1.5rem; }
            .page-hero h1 { font-size: 1.5rem; }
            .page-hero .meta-line { gap: 0.75rem; font-size: 0.8rem; }
        }
        .article-content {
            padding: 3rem 0 4rem;
            background: var(--bg-body);
        }
        .article-body {
            max-width: 800px;
            margin: 0 auto;
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text-primary);
        }
        .article-body p { margin-bottom: 1.25rem; }
        .article-body h2 { font-size: 1.5rem; font-weight: 700; margin: 2rem 0 1rem; color: var(--secondary); }
        .article-body h3 { font-size: 1.25rem; font-weight: 600; margin: 1.5rem 0 0.75rem; color: var(--secondary); }
        .article-body ul, .article-body ol { margin-bottom: 1.25rem; padding-left: 1.5rem; }
        .article-body li { margin-bottom: 0.5rem; }
        .article-body blockquote {
            border-left: 4px solid var(--primary);
            background: var(--primary-light);
            padding: 1rem 1.5rem;
            margin: 1.5rem 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
            font-style: italic;
        }
        .article-body img { border-radius: var(--radius); margin: 1.5rem 0; box-shadow: var(--shadow-md); }
        .article-body a { font-weight: 500; text-decoration: underline; text-underline-offset: 2px; }
        .article-body .table-wrap { overflow-x: auto; margin: 1.5rem 0; }
        .article-body table { width: 100%; border-collapse: collapse; font-size: 0.95rem; }
        .article-body th, .article-body td { border: 1px solid var(--border); padding: 0.6rem 1rem; text-align: left; }
        .article-body th { background: var(--bg-alt); font-weight: 600; }
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
            margin-top: 2.5rem;
            padding-top: 1.5rem;
            border-top: 1px solid var(--border);
        }
        .article-tags .tag {
            display: inline-block;
            background: var(--bg-alt);
            color: var(--text-secondary);
            padding: 0.3rem 1rem;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            border: 1px solid var(--border);
            transition: all var(--transition);
        }
        .article-tags .tag:hover { background: var(--primary-light); color: var(--primary); border-color: var(--primary); }
        .article-nav {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 1rem;
            margin-top: 2.5rem;
            padding-top: 1.5rem;
            border-top: 1px solid var(--border);
        }
        .article-nav a {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            color: var(--text-secondary);
            font-weight: 500;
            padding: 0.5rem 1rem;
            border-radius: var(--radius-sm);
            background: var(--bg-alt);
            border: 1px solid var(--border);
            transition: all var(--transition);
        }
        .article-nav a:hover { background: var(--primary-light); color: var(--primary); border-color: var(--primary); }
        .not-found-wrap {
            text-align: center;
            padding: 5rem 1rem;
        }
        .not-found-wrap i { font-size: 4rem; color: var(--text-muted); margin-bottom: 1.5rem; }
        .not-found-wrap h2 { font-size: 1.75rem; font-weight: 700; margin-bottom: 0.75rem; }
        .not-found-wrap p { color: var(--text-secondary); margin-bottom: 1.5rem; }
        .not-found-wrap .btn-home {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: var(--primary);
            color: #fff;
            padding: 0.75rem 2rem;
            border-radius: 50px;
            font-weight: 600;
            transition: all var(--transition);
        }
        .not-found-wrap .btn-home:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: var(--shadow-md); color: #fff; }
        .related-section {
            background: var(--bg-alt);
            padding: 3rem 0;
        }
        .related-section h3 { font-size: 1.5rem; font-weight: 700; margin-bottom: 1.5rem; }
        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: all var(--transition);
            height: 100%;
            border: 1px solid var(--border);
        }
        .related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
        .related-card img { width: 100%; height: 180px; object-fit: cover; border-radius: 0; }
        .related-card .card-body { padding: 1.25rem; }
        .related-card .card-body h4 { font-size: 1.05rem; font-weight: 600; margin-bottom: 0.5rem; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .related-card .card-body p { font-size: 0.9rem; color: var(--text-secondary); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .related-card .card-body .meta { font-size: 0.8rem; color: var(--text-muted); margin-top: 0.5rem; }
        .site-footer {
            background: var(--secondary);
            color: rgba(255,255,255,0.85);
            padding: 3.5rem 0 0;
        }
        .site-footer .footer-logo {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 1.25rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.75rem;
        }
        .logo-icon-small {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-sm);
            font-weight: 800;
            font-size: 1rem;
        }
        .footer-desc { font-size: 0.9rem; line-height: 1.7; color: rgba(255,255,255,0.6); max-width: 320px; }
        .site-footer h5 { color: #fff; font-weight: 600; font-size: 1rem; margin-bottom: 1rem; }
        .footer-links { list-style: none; padding: 0; margin: 0; }
        .footer-links li { margin-bottom: 0.5rem; }
        .footer-links a { color: rgba(255,255,255,0.6); font-size: 0.9rem; transition: color var(--transition); }
        .footer-links a:hover { color: #fff; }
        .footer-contact li { color: rgba(255,255,255,0.6); font-size: 0.9rem; display: flex; align-items: center; gap: 0.5rem; }
        .footer-contact i { width: 16px; color: var(--primary); }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding: 1.5rem 0;
            margin-top: 2.5rem;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.5);
        }
        .footer-bottom a { color: rgba(255,255,255,0.6); }
        .footer-bottom a:hover { color: #fff; }
        .site-footer .fab, .site-footer .fas { font-size: 1.2rem; color: rgba(255,255,255,0.5); transition: color var(--transition); }
        .site-footer .fab:hover, .site-footer .fas:hover { color: var(--primary); }
        @media (max-width: 768px) {
            .site-footer .row > div { margin-bottom: 1.5rem; }
            .footer-desc { max-width: 100%; }
        }
        .btn-back-top {
            position: fixed;
            bottom: 2rem;
            right: 2rem;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            border: none;
            box-shadow: var(--shadow-md);
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            opacity: 0;
            visibility: hidden;
            transition: all var(--transition);
            z-index: 1050;
        }
        .btn-back-top.show { opacity: 1; visibility: visible; }
        .btn-back-top:hover { background: var(--primary-dark); transform: translateY(-3px); box-shadow: var(--shadow-lg); }
        @media (max-width: 576px) {
            .btn-back-top { bottom: 1.25rem; right: 1.25rem; width: 40px; height: 40px; font-size: 1rem; }
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #f1c0c0;
            --secondary: #1d3557;
            --secondary-light: #457b9d;
            --accent: #f4a261;
            --bg: #f8f9fa;
            --bg-card: #ffffff;
            --bg-dark: #1d3557;
            --text: #1a1a2e;
            --text-light: #6c757d;
            --text-on-dark: #f1faee;
            --border: #e0e0e0;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.12);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            --container-padding: 1.5rem;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-family);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
        }
        ul {
            list-style: none;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: var(--container-padding);
            padding-right: var(--container-padding);
        }
        .row.g-4>[class*="col-"] {
            padding: 0.75rem;
        }

        /* ===== Header / Nav ===== */
        .main-header {
            background: #ffffff;
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 1040;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.03);
            transition: var(--transition);
        }
        .main-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            padding-top: 0.6rem;
            padding-bottom: 0.6rem;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--secondary);
            letter-spacing: -0.5px;
            transition: var(--transition);
        }
        .site-logo:hover {
            color: var(--primary);
        }
        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            background: var(--primary);
            color: #fff;
            border-radius: 10px;
            font-size: 1.3rem;
            font-weight: 700;
            flex-shrink: 0;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 0.25rem;
            flex-wrap: wrap;
        }
        .main-nav a {
            padding: 0.55rem 1.1rem;
            border-radius: var(--radius-sm);
            color: var(--text);
            font-weight: 500;
            font-size: 0.95rem;
            transition: var(--transition);
            white-space: nowrap;
            position: relative;
        }
        .main-nav a:hover {
            background: rgba(230, 57, 70, 0.06);
            color: var(--primary);
        }
        .main-nav a.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 12px rgba(230, 57, 70, 0.25);
        }
        .main-nav a.active:hover {
            background: var(--primary-dark);
            color: #fff;
        }
        .main-nav .nav-cta {
            background: var(--secondary);
            color: #fff;
            border-radius: var(--radius-sm);
            padding: 0.55rem 1.3rem;
            display: flex;
            align-items: center;
            gap: 0.4rem;
            font-weight: 500;
        }
        .main-nav .nav-cta:hover {
            background: #15263e;
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 14px rgba(29, 53, 87, 0.3);
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 2px solid var(--border);
            font-size: 1.4rem;
            color: var(--text);
            padding: 0.4rem 0.7rem;
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: var(--transition);
        }
        .nav-toggle:hover {
            border-color: var(--primary);
            color: var(--primary);
        }
        .nav-toggle:focus-visible {
            outline: 3px solid var(--primary-light);
            outline-offset: 2px;
        }

        /* ===== Hero 板块（分类页首屏） ===== */
        .category-hero {
            background: linear-gradient(135deg, var(--secondary) 0%, #0f1a2e 100%);
            color: var(--text-on-dark);
            padding: 4rem 0 3.5rem;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: var(--primary);
        }
        .category-hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            letter-spacing: -1px;
            margin-bottom: 0.75rem;
            line-height: 1.2;
        }
        .category-hero h1 span {
            color: var(--accent);
        }
        .category-hero p {
            font-size: 1.15rem;
            max-width: 680px;
            margin: 0 auto 1.5rem;
            color: rgba(241, 250, 238, 0.8);
            line-height: 1.8;
        }
        .category-hero .breadcrumb-custom {
            display: flex;
            justify-content: center;
            gap: 0.5rem;
            font-size: 0.9rem;
            color: rgba(241, 250, 238, 0.6);
            margin-bottom: 1rem;
        }
        .category-hero .breadcrumb-custom a {
            color: rgba(241, 250, 238, 0.8);
        }
        .category-hero .breadcrumb-custom a:hover {
            color: var(--accent);
        }
        .category-hero .hero-tags {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 0.5rem;
            margin-top: 1.5rem;
        }
        .category-hero .hero-tags .tag {
            background: rgba(255, 255, 255, 0.12);
            color: var(--text-on-dark);
            padding: 0.35rem 1rem;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            border: 1px solid rgba(255, 255, 255, 0.15);
            transition: var(--transition);
        }
        .category-hero .hero-tags .tag:hover {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
        }

        /* ===== 板块通用 ===== */
        section {
            padding: 4.5rem 0;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 0.5rem;
            letter-spacing: -0.3px;
        }
        .section-subtitle {
            color: var(--text-light);
            font-size: 1.05rem;
            margin-bottom: 2.5rem;
            max-width: 600px;
        }
        .section-divider {
            width: 60px;
            height: 4px;
            background: var(--primary);
            border-radius: 4px;
            margin-bottom: 1.5rem;
        }

        /* ===== 卡片通用 ===== */
        .card {
            border: none;
            border-radius: var(--radius);
            background: var(--bg-card);
            box-shadow: var(--shadow);
            transition: var(--transition);
            overflow: hidden;
            height: 100%;
        }
        .card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }
        .card .card-body {
            padding: 1.5rem;
        }
        .card .card-title {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 0.5rem;
        }
        .card .card-text {
            color: var(--text-light);
            font-size: 0.92rem;
            line-height: 1.7;
        }
        .card .card-img-top {
            height: 200px;
            object-fit: cover;
            border-radius: var(--radius) var(--radius) 0 0;
        }
        .card .card-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary-dark);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 0.2rem 0.8rem;
            border-radius: 50px;
            margin-bottom: 0.5rem;
        }

        /* ===== 项目分类网格 ===== */
        .project-grid .card .card-icon {
            font-size: 2.2rem;
            color: var(--primary);
            margin-bottom: 0.75rem;
        }
        .project-grid .card .card-body {
            text-align: center;
        }
        .project-grid .card .card-meta {
            display: flex;
            justify-content: center;
            gap: 1rem;
            font-size: 0.85rem;
            color: var(--text-light);
            margin-top: 0.75rem;
            border-top: 1px solid var(--border);
            padding-top: 0.75rem;
        }

        /* ===== 资讯列表 ===== */
        .news-list .list-item {
            display: flex;
            gap: 1.2rem;
            padding: 1.2rem 0;
            border-bottom: 1px solid var(--border);
            transition: var(--transition);
        }
        .news-list .list-item:last-child {
            border-bottom: none;
        }
        .news-list .list-item:hover {
            padding-left: 0.5rem;
        }
        .news-list .list-item .item-thumb {
            width: 120px;
            min-height: 80px;
            border-radius: var(--radius-sm);
            background: #e9ecef;
            flex-shrink: 0;
            overflow: hidden;
        }
        .news-list .list-item .item-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .news-list .list-item .item-content h4 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 0.3rem;
        }
        .news-list .list-item .item-content h4 a {
            color: inherit;
        }
        .news-list .list-item .item-content h4 a:hover {
            color: var(--primary);
        }
        .news-list .list-item .item-content p {
            font-size: 0.9rem;
            color: var(--text-light);
            margin-bottom: 0.3rem;
        }
        .news-list .list-item .item-content .item-meta {
            font-size: 0.8rem;
            color: var(--text-light);
            display: flex;
            gap: 1rem;
        }
        .news-list .list-item .item-content .item-meta i {
            margin-right: 0.25rem;
        }

        /* ===== 精选项目 ===== */
        .featured-item {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            overflow: hidden;
            transition: var(--transition);
        }
        .featured-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .featured-item .featured-img {
            height: 240px;
            background: #e9ecef;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 3rem;
            color: var(--primary);
            position: relative;
        }
        .featured-item .featured-img .badge-number {
            position: absolute;
            top: 1rem;
            left: 1rem;
            background: var(--primary);
            color: #fff;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            font-weight: 700;
        }
        .featured-item .featured-body {
            padding: 1.5rem;
        }
        .featured-item .featured-body h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 0.5rem;
        }
        .featured-item .featured-body p {
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.8;
        }
        .featured-item .featured-body .btn-outline {
            border: 2px solid var(--primary);
            color: var(--primary);
            background: transparent;
            padding: 0.4rem 1.2rem;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.85rem;
            transition: var(--transition);
            display: inline-block;
        }
        .featured-item .featured-body .btn-outline:hover {
            background: var(--primary);
            color: #fff;
        }

        /* ===== 流程 / 数据 ===== */
        .process-step {
            text-align: center;
            padding: 1.5rem 1rem;
        }
        .process-step .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 56px;
            height: 56px;
            background: var(--primary);
            color: #fff;
            border-radius: 50%;
            font-size: 1.4rem;
            font-weight: 700;
            margin-bottom: 1rem;
            box-shadow: 0 6px 20px rgba(230, 57, 70, 0.25);
        }
        .process-step h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 0.4rem;
        }
        .process-step p {
            font-size: 0.9rem;
            color: var(--text-light);
            max-width: 260px;
            margin: 0 auto;
        }

        /* ===== FAQ ===== */
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 1.2rem 1.5rem;
            margin-bottom: 0.75rem;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
            border-left: 4px solid var(--primary);
            transition: var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow);
        }
        .faq-item h5 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--secondary);
            margin-bottom: 0.3rem;
        }
        .faq-item p {
            font-size: 0.92rem;
            color: var(--text-light);
            margin: 0;
            line-height: 1.7;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--secondary) 0%, #0f1a2e 100%);
            color: var(--text-on-dark);
            text-align: center;
            padding: 4rem 0;
        }
        .cta-section h2 {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 0.75rem;
        }
        .cta-section p {
            font-size: 1.1rem;
            color: rgba(241, 250, 238, 0.8);
            max-width: 600px;
            margin: 0 auto 1.5rem;
        }
        .cta-section .btn-cta {
            background: var(--primary);
            color: #fff;
            padding: 0.8rem 2.5rem;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.05rem;
            border: none;
            transition: var(--transition);
            display: inline-block;
            box-shadow: 0 6px 24px rgba(230, 57, 70, 0.35);
        }
        .cta-section .btn-cta:hover {
            background: #b91c29;
            transform: translateY(-3px);
            box-shadow: 0 10px 32px rgba(230, 57, 70, 0.45);
            color: #fff;
        }
        .cta-section .btn-cta:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 4px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #0f1a2e;
            color: rgba(241, 250, 238, 0.8);
            padding: 3.5rem 0 0;
        }
        .site-footer .footer-logo {
            font-size: 1.5rem;
            font-weight: 800;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 0.6rem;
            margin-bottom: 1rem;
        }
        .site-footer .logo-icon-small {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: var(--primary);
            color: #fff;
            border-radius: 8px;
            font-size: 1.1rem;
            font-weight: 700;
        }
        .site-footer .footer-desc {
            font-size: 0.9rem;
            line-height: 1.8;
            color: rgba(241, 250, 238, 0.7);
            max-width: 320px;
        }
        .site-footer h5 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 1rem;
        }
        .site-footer .footer-links li {
            margin-bottom: 0.4rem;
        }
        .site-footer .footer-links a {
            color: rgba(241, 250, 238, 0.7);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .site-footer .footer-links a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .site-footer .footer-contact li {
            font-size: 0.9rem;
            color: rgba(241, 250, 238, 0.7);
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .site-footer .footer-contact i {
            width: 18px;
            color: var(--primary);
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 1.5rem 0;
            margin-top: 2.5rem;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(241, 250, 238, 0.6);
        }
        .site-footer .footer-bottom a {
            color: var(--accent);
        }
        .site-footer .footer-bottom a:hover {
            color: #fff;
        }
        .site-footer a[aria-label] i {
            font-size: 1.3rem;
            color: rgba(241, 250, 238, 0.6);
            transition: var(--transition);
        }
        .site-footer a[aria-label]:hover i {
            color: var(--accent);
            transform: scale(1.15);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .category-hero h1 {
                font-size: 2.2rem;
            }
            section {
                padding: 3.5rem 0;
            }
        }
        @media (max-width: 768px) {
            .main-header .container {
                flex-wrap: wrap;
            }
            .nav-toggle {
                display: block;
            }
            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                padding-top: 0.75rem;
                gap: 0.25rem;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 0.7rem 1rem;
                border-radius: var(--radius-sm);
                text-align: center;
            }
            .main-nav .nav-cta {
                justify-content: center;
            }
            .category-hero {
                padding: 3rem 0 2.5rem;
            }
            .category-hero h1 {
                font-size: 1.8rem;
            }
            .category-hero p {
                font-size: 1rem;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .news-list .list-item {
                flex-direction: column;
            }
            .news-list .list-item .item-thumb {
                width: 100%;
                height: 160px;
            }
            .process-step p {
                max-width: 100%;
            }
            .featured-item .featured-img {
                height: 180px;
            }
            .cta-section h2 {
                font-size: 1.6rem;
            }
            .site-footer .footer-logo {
                font-size: 1.3rem;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding-left: 1rem;
                padding-right: 1rem;
            }
            .category-hero h1 {
                font-size: 1.5rem;
            }
            .category-hero .hero-tags .tag {
                font-size: 0.75rem;
                padding: 0.25rem 0.7rem;
            }
            .section-title {
                font-size: 1.3rem;
            }
            .card .card-img-top {
                height: 160px;
            }
            .featured-item .featured-img {
                height: 140px;
            }
            .cta-section .btn-cta {
                padding: 0.6rem 1.8rem;
                font-size: 0.95rem;
            }
            .site-footer .footer-links {
                margin-bottom: 1.5rem;
            }
        }

        /* ===== 辅助类 ===== */
        .bg-white {
            background: #ffffff;
        }
        .bg-light-custom {
            background: #f1f3f5;
        }
        .text-center {
            text-align: center;
        }
        .mt-4 {
            margin-top: 1.5rem;
        }
        .mb-4 {
            margin-bottom: 1.5rem;
        }
        .gap-3 {
            gap: 1rem;
        }
        .gap-4 {
            gap: 1.5rem;
        }
        .d-flex {
            display: flex;
        }
        .flex-wrap {
            flex-wrap: wrap;
        }
        .align-items-center {
            align-items: center;
        }
        .justify-content-center {
            justify-content: center;
        }
        .btn-primary-custom {
            background: var(--primary);
            color: #fff;
            padding: 0.6rem 1.6rem;
            border-radius: 50px;
            font-weight: 600;
            border: none;
            transition: var(--transition);
            display: inline-block;
        }
        .btn-primary-custom:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(230, 57, 70, 0.3);
            color: #fff;
        }
        .btn-outline-custom {
            border: 2px solid var(--primary);
            color: var(--primary);
            background: transparent;
            padding: 0.5rem 1.4rem;
            border-radius: 50px;
            font-weight: 600;
            transition: var(--transition);
            display: inline-block;
        }
        .btn-outline-custom:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }