/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a8a3f;
            --primary-dark: #0e6b2d;
            --primary-light: #e6f7ed;
            --primary-gradient: linear-gradient(135deg, #1a8a3f 0%, #0e6b2d 100%);
            --secondary: #f5a623;
            --secondary-dark: #d4891a;
            --secondary-light: #fef5e0;
            --bg: #f7f9fc;
            --bg-white: #ffffff;
            --bg-dark: #0b1a2e;
            --bg-card: #ffffff;
            --text: #1a1a2e;
            --text-secondary: #4a5568;
            --text-light: #8899aa;
            --text-white: #ffffff;
            --border: #e2e8f0;
            --border-light: #f0f2f5;
            --radius-sm: 6px;
            --radius: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 48px rgba(0, 0, 0, 0.12);
            --shadow-hover: 0 16px 48px rgba(0, 0, 0, 0.16);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --max-width: 1200px;
            --header-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            min-height: 100vh;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover,
        a:focus {
            color: var(--primary-dark);
            outline: none;
        }
        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius);
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.25;
            font-weight: 700;
            color: var(--text);
        }
        p {
            margin-bottom: 0;
        }

        /* ===== 容器 ===== */
        .container-custom {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .section-pad {
            padding: 80px 0;
        }
        .section-pad-sm {
            padding: 56px 0;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text);
            margin-bottom: 12px;
            letter-spacing: -0.02em;
        }
        .section-subtitle {
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 640px;
            margin: 0 auto 48px;
            line-height: 1.6;
        }
        .text-center {
            text-align: center;
        }
        .text-white {
            color: var(--text-white);
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-sm);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--primary-dark);
            letter-spacing: -0.02em;
            white-space: nowrap;
        }
        .logo i {
            font-size: 1.5rem;
            color: var(--primary);
        }
        .logo:hover {
            color: var(--primary);
        }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-list a {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: var(--radius-sm);
            transition: var(--transition);
            position: relative;
        }
        .nav-list a:hover,
        .nav-list a:focus-visible {
            color: var(--primary);
            background: var(--primary-light);
        }
        .nav-list a.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 600;
        }
        .nav-list a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px !important;
            background: var(--primary-gradient) !important;
            color: var(--text-white) !important;
            border-radius: var(--radius) !important;
            font-weight: 600 !important;
            box-shadow: 0 4px 14px rgba(26, 138, 63, 0.3);
            transition: var(--transition);
        }
        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(26, 138, 63, 0.4);
        }
        .nav-cta:active {
            transform: translateY(0);
        }

        /* 移动端菜单按钮 */
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            background: transparent;
            border: none;
            cursor: pointer;
        }
        .menu-toggle span {
            display: block;
            width: 28px;
            height: 3px;
            background: var(--text);
            border-radius: 4px;
            transition: var(--transition);
        }
        .menu-toggle.active span:nth-child(1) {
            transform: rotate(45deg) translate(6px, 6px);
        }
        .menu-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .menu-toggle.active span:nth-child(3) {
            transform: rotate(-45deg) translate(6px, -6px);
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 92vh;
            display: flex;
            align-items: center;
            margin-top: var(--header-height);
            background: linear-gradient(135deg, #0b1a2e 0%, #0f2a3e 50%, #0a1f2f 100%);
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.3;
            mix-blend-mode: overlay;
        }
        .hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(26, 138, 63, 0.15) 0%, transparent 70%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 780px;
            padding: 60px 24px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 18px;
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: 50px;
            font-size: 0.85rem;
            color: var(--text-white);
            margin-bottom: 24px;
            letter-spacing: 0.3px;
        }
        .hero-badge i {
            color: var(--secondary);
        }
        .hero h1 {
            font-size: 3.2rem;
            font-weight: 900;
            color: var(--text-white);
            line-height: 1.15;
            margin-bottom: 20px;
            letter-spacing: -0.03em;
        }
        .hero h1 span {
            background: linear-gradient(135deg, var(--secondary) 0%, #ffc107 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero p {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.8);
            line-height: 1.7;
            max-width: 600px;
            margin-bottom: 36px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 36px;
            background: var(--primary-gradient);
            color: var(--text-white);
            font-size: 1.05rem;
            font-weight: 600;
            border-radius: var(--radius);
            box-shadow: 0 6px 24px rgba(26, 138, 63, 0.35);
            transition: var(--transition);
            border: none;
        }
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(26, 138, 63, 0.45);
            color: var(--text-white);
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 32px;
            background: rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: var(--text-white);
            font-size: 1.05rem;
            font-weight: 500;
            border-radius: var(--radius);
            transition: var(--transition);
        }
        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.16);
            color: var(--text-white);
            border-color: rgba(255, 255, 255, 0.3);
        }
        .hero-stats {
            display: flex;
            gap: 48px;
            margin-top: 56px;
            padding-top: 36px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }
        .hero-stat h3 {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-white);
            line-height: 1;
        }
        .hero-stat h3 span {
            color: var(--secondary);
        }
        .hero-stat p {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.6);
            margin-top: 4px;
        }

        /* ===== 介绍板块 ===== */
        .intro-section {
            background: var(--bg-white);
        }
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }
        .intro-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            position: relative;
        }
        .intro-image img {
            width: 100%;
            height: 420px;
            object-fit: cover;
            transition: var(--transition);
        }
        .intro-image:hover img {
            transform: scale(1.03);
        }
        .intro-image .play-badge {
            position: absolute;
            bottom: 20px;
            left: 20px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 20px;
            background: rgba(0, 0, 0, 0.6);
            backdrop-filter: blur(8px);
            border-radius: var(--radius);
            color: var(--text-white);
            font-size: 0.9rem;
        }
        .intro-text h2 {
            font-size: 2rem;
            margin-bottom: 16px;
        }
        .intro-text h2 span {
            color: var(--primary);
        }
        .intro-text p {
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 16px;
        }
        .intro-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
            margin-top: 24px;
        }
        .intro-feature {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 16px;
            background: var(--primary-light);
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--primary-dark);
        }
        .intro-feature i {
            font-size: 1.1rem;
        }

        /* ===== 分类入口 ===== */
        .category-section {
            background: var(--bg);
        }
        .category-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .category-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: var(--bg-white);
            box-shadow: var(--shadow);
            transition: var(--transition);
            cursor: pointer;
            border: 1px solid var(--border-light);
        }
        .category-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-hover);
        }
        .category-card .card-img {
            height: 200px;
            overflow: hidden;
            position: relative;
        }
        .category-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .category-card:hover .card-img img {
            transform: scale(1.08);
        }
        .category-card .card-img .overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(0deg, rgba(0, 0, 0, 0.5) 0%, transparent 60%);
        }
        .category-card .card-body {
            padding: 20px 24px 24px;
        }
        .category-card .card-body h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .category-card .card-body p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.6;
            margin-bottom: 16px;
        }
        .category-card .card-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 14px;
            background: var(--primary-light);
            color: var(--primary-dark);
            font-size: 0.8rem;
            font-weight: 600;
            border-radius: 50px;
        }
        .category-card .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary);
            font-weight: 600;
            font-size: 0.95rem;
            margin-top: 8px;
        }
        .category-card .card-link i {
            transition: var(--transition);
        }
        .category-card:hover .card-link i {
            transform: translateX(4px);
        }

        /* ===== 优势板块 ===== */
        .advantage-section {
            background: var(--bg-white);
        }
        .advantage-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .advantage-card {
            text-align: center;
            padding: 36px 20px 28px;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            transition: var(--transition);
            background: var(--bg-white);
        }
        .advantage-card:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow);
            transform: translateY(-4px);
        }
        .advantage-card .icon-wrap {
            width: 64px;
            height: 64px;
            margin: 0 auto 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: var(--primary-light);
            font-size: 1.6rem;
            color: var(--primary);
            transition: var(--transition);
        }
        .advantage-card:hover .icon-wrap {
            background: var(--primary);
            color: var(--text-white);
        }
        .advantage-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .advantage-card p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.6;
        }

        /* ===== 数据看板 ===== */
        .stats-section {
            background: var(--bg-dark);
            position: relative;
            overflow: hidden;
        }
        .stats-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.08;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            position: relative;
            z-index: 1;
        }
        .stat-item {
            text-align: center;
            padding: 32px 16px;
            border-radius: var(--radius);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.06);
            transition: var(--transition);
        }
        .stat-item:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.12);
        }
        .stat-item .number {
            font-size: 2.8rem;
            font-weight: 900;
            color: var(--secondary);
            line-height: 1;
            margin-bottom: 6px;
        }
        .stat-item .label {
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.7);
        }
        .stat-item .label i {
            margin-right: 6px;
            color: var(--secondary);
        }

        /* ===== 最新资讯 (CMS列表) ===== */
        .news-section {
            background: var(--bg);
        }
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .news-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow);
        }
        .news-card .thumb {
            height: 200px;
            overflow: hidden;
            position: relative;
        }
        .news-card .thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .news-card:hover .thumb img {
            transform: scale(1.06);
        }
        .news-card .thumb .cat-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 4px 14px;
            background: var(--primary);
            color: var(--text-white);
            font-size: 0.75rem;
            font-weight: 600;
            border-radius: 50px;
            backdrop-filter: blur(4px);
        }
        .news-card .body {
            padding: 20px 24px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .news-card .body .meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.8rem;
            color: var(--text-light);
            margin-bottom: 10px;
        }
        .news-card .body .meta i {
            margin-right: 4px;
        }
        .news-card .body h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 10px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card .body h3 a {
            color: var(--text);
        }
        .news-card .body h3 a:hover {
            color: var(--primary);
        }
        .news-card .body p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.6;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card .body .read-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary);
            font-weight: 600;
            font-size: 0.9rem;
            margin-top: 16px;
            transition: var(--transition);
        }
        .news-card .body .read-more i {
            transition: var(--transition);
        }
        .news-card .body .read-more:hover i {
            transform: translateX(4px);
        }
        .news-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 60px 20px;
            color: var(--text-light);
            font-size: 1.05rem;
        }
        .news-empty i {
            font-size: 2.4rem;
            display: block;
            margin-bottom: 16px;
            color: var(--border);
        }

        /* ===== 使用指南 ===== */
        .guide-section {
            background: var(--bg-white);
        }
        .guide-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
            counter-reset: step;
        }
        .guide-step {
            text-align: center;
            padding: 32px 20px;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            position: relative;
            transition: var(--transition);
            background: var(--bg-white);
        }
        .guide-step:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow);
            transform: translateY(-4px);
        }
        .guide-step .step-num {
            width: 52px;
            height: 52px;
            margin: 0 auto 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 1.4rem;
            font-weight: 800;
            transition: var(--transition);
        }
        .guide-step:hover .step-num {
            background: var(--primary);
            color: var(--text-white);
        }
        .guide-step h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .guide-step p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.6;
        }
        .guide-step .step-arrow {
            position: absolute;
            right: -18px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--border);
            font-size: 1.4rem;
        }
        .guide-step:last-child .step-arrow {
            display: none;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg);
        }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            margin-bottom: 12px;
            transition: var(--transition);
            overflow: hidden;
        }
        .faq-item:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text);
            cursor: pointer;
            background: transparent;
            width: 100%;
            text-align: left;
            border: none;
            transition: var(--transition);
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question i {
            font-size: 1.1rem;
            color: var(--text-light);
            transition: var(--transition);
        }
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }
        .faq-cta {
            text-align: center;
            margin-top: 36px;
            font-size: 0.95rem;
            color: var(--text-secondary);
        }
        .faq-cta a {
            font-weight: 600;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--bg-dark);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.06;
        }
        .cta-content {
            position: relative;
            z-index: 1;
            text-align: center;
            padding: 32px 0;
        }
        .cta-content h2 {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 16px;
        }
        .cta-content p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.7);
            max-width: 560px;
            margin: 0 auto 32px;
        }
        .cta-content .btn-primary {
            padding: 18px 44px;
            font-size: 1.1rem;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #0a1420;
            padding: 60px 0 32px;
            border-top: 1px solid rgba(255, 255, 255, 0.04);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .footer-brand .logo {
            color: var(--text-white);
            font-size: 1.2rem;
            margin-bottom: 12px;
        }
        .footer-brand .logo i {
            color: var(--secondary);
        }
        .footer-brand p {
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-col h4 {
            color: var(--text-white);
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--secondary);
            padding-left: 4px;
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 24px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.35);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-bottom a:hover {
            color: var(--secondary);
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            color: rgba(255, 255, 255, 0.5);
            transition: var(--transition);
        }
        .footer-social a:hover {
            background: var(--primary);
            color: var(--text-white);
            transform: translateY(-3px);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .hero h1 {
                font-size: 2.6rem;
            }
            .intro-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .intro-image img {
                height: 320px;
            }
            .advantage-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .guide-steps {
                grid-template-columns: repeat(2, 1fr);
            }
            .guide-step .step-arrow {
                display: none;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            :root {
                --header-height: 64px;
            }
            .section-pad {
                padding: 56px 0;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .section-subtitle {
                font-size: 1rem;
                margin-bottom: 32px;
            }

            /* 移动端导航 */
            .nav-list {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 16px 24px 24px;
                gap: 4px;
                box-shadow: var(--shadow-lg);
                transform: translateY(-110%);
                opacity: 0;
                transition: var(--transition);
                pointer-events: none;
                border-bottom: 1px solid var(--border);
            }
            .nav-list.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: all;
            }
            .nav-list a {
                width: 100%;
                padding: 12px 16px;
                font-size: 1rem;
            }
            .nav-list a.active::after {
                display: none;
            }
            .nav-list a.active {
                background: var(--primary-light);
            }
            .nav-cta {
                margin-top: 8px;
                justify-content: center;
            }
            .menu-toggle {
                display: flex;
            }

            .hero {
                min-height: 80vh;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .hero p {
                font-size: 1rem;
            }
            .hero-stats {
                gap: 24px;
                flex-wrap: wrap;
            }
            .hero-stat h3 {
                font-size: 1.5rem;
            }

            .category-grid {
                grid-template-columns: 1fr;
            }
            .news-grid {
                grid-template-columns: 1fr;
            }
            .advantage-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .guide-steps {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 12px;
                text-align: center;
            }
            .intro-features {
                grid-template-columns: 1fr;
            }
            .cta-content h2 {
                font-size: 1.6rem;
            }
        }

        @media (max-width: 520px) {
            .container-custom {
                padding: 0 16px;
            }
            .hero h1 {
                font-size: 1.6rem;
            }
            .hero-actions {
                flex-direction: column;
                width: 100%;
            }
            .hero-actions .btn-primary,
            .hero-actions .btn-secondary {
                width: 100%;
                justify-content: center;
            }
            .hero-stats {
                flex-direction: column;
                gap: 16px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-item .number {
                font-size: 2rem;
            }
            .section-title {
                font-size: 1.4rem;
            }
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1f8a4c;
            --primary-dark: #146a39;
            --primary-light: #e8f5ee;
            --secondary: #f5a623;
            --secondary-hover: #e0951a;
            --accent: #ff6b35;
            --bg-body: #f8faf9;
            --bg-white: #ffffff;
            --bg-card: #ffffff;
            --bg-dark: #1a2e2a;
            --text-dark: #1a1a2e;
            --text-body: #2d3a3a;
            --text-muted: #6b7a7a;
            --text-light: #f0f4f3;
            --border-light: #e2ece8;
            --border-card: #e8f0ec;
            --shadow-sm: 0 2px 8px rgba(26, 46, 42, 0.06);
            --shadow-md: 0 6px 24px rgba(26, 46, 42, 0.08);
            --shadow-lg: 0 16px 48px rgba(26, 46, 42, 0.10);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
            --container-max: 1200px;
            --nav-height: 72px;
        }

        /* ===== 基础 Reset / Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-body);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-dark); }
        a:focus-visible { outline: 3px solid var(--secondary); outline-offset: 2px; border-radius: 4px; }
        img { max-width: 100%; height: auto; display: block; }
        ul, ol { list-style: none; padding: 0; margin: 0; }
        h1, h2, h3, h4, h5, h6 { color: var(--text-dark); font-weight: 700; line-height: 1.3; margin: 0 0 0.5rem; }
        p { margin: 0 0 1rem; }
        .container-custom {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        .section { padding: 80px 0; }
        .section-title {
            font-size: 2.2rem;
            text-align: center;
            margin-bottom: 0.5rem;
            color: var(--text-dark);
        }
        .section-subtitle {
            font-size: 1.1rem;
            text-align: center;
            color: var(--text-muted);
            max-width: 680px;
            margin: 0 auto 48px;
        }
        .text-center { text-align: center; }

        /* ===== 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-light);
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--primary-dark);
            letter-spacing: -0.5px;
        }
        .logo i { color: var(--primary); font-size: 1.6rem; }
        .logo:hover { color: var(--primary); }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-list a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text-body);
            transition: var(--transition);
            position: relative;
        }
        .nav-list a:hover { background: var(--primary-light); color: var(--primary-dark); }
        .nav-list a.active {
            background: var(--primary);
            color: #fff;
        }
        .nav-list a.active:hover { background: var(--primary-dark); }
        .nav-cta {
            background: var(--accent) !important;
            color: #fff !important;
            padding: 8px 22px !important;
            border-radius: var(--radius-sm) !important;
            font-weight: 700 !important;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-cta:hover { background: #e05520 !important; transform: translateY(-1px); }
        .nav-cta i { font-size: 0.85rem; transition: var(--transition); }
        .nav-cta:hover i { transform: translateX(4px); }

        /* 移动端菜单切换 */
        .menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.6rem;
            color: var(--text-dark);
            cursor: pointer;
            padding: 4px 8px;
            border-radius: var(--radius-sm);
        }
        .menu-toggle:focus-visible { outline: 3px solid var(--secondary); }

        /* ===== Hero / Banner ===== */
        .page-hero {
            position: relative;
            min-height: 360px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            background: linear-gradient(135deg, rgba(26, 46, 42, 0.82), rgba(31, 138, 76, 0.78)), url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            color: #fff;
            padding: 80px 24px 60px;
        }
        .page-hero h1 {
            font-size: 3.2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
            text-shadow: 0 2px 12px rgba(0,0,0,0.25);
        }
        .page-hero p {
            font-size: 1.2rem;
            max-width: 640px;
            margin: 0 auto;
            opacity: 0.92;
            color: rgba(255,255,255,0.92);
            line-height: 1.7;
        }
        .hero-badge {
            display: inline-block;
            background: rgba(255,255,255,0.18);
            backdrop-filter: blur(6px);
            padding: 6px 20px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 20px;
            border: 1px solid rgba(255,255,255,0.25);
        }

        /* ===== 板块通用 ===== */
        .section-alt { background: var(--bg-white); }
        .section-dark {
            background: var(--bg-dark);
            color: var(--text-light);
        }
        .section-dark .section-title,
        .section-dark h2,
        .section-dark h3 { color: #fff; }
        .section-dark .section-subtitle { color: rgba(255,255,255,0.75); }

        /* ===== 卡片 ===== */
        .card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: var(--transition);
            border: 1px solid var(--border-card);
            height: 100%;
        }
        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .card-img {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            display: block;
        }
        .card-body { padding: 20px 22px 24px; }
        .card-body h3 { font-size: 1.25rem; margin-bottom: 8px; }
        .card-body p { font-size: 0.95rem; color: var(--text-muted); margin-bottom: 12px; }
        .card-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary-dark);
            font-size: 0.75rem;
            font-weight: 700;
            padding: 3px 12px;
            border-radius: 50px;
            letter-spacing: 0.3px;
            margin-bottom: 10px;
        }
        .card-link {
            font-weight: 700;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .card-link i { font-size: 0.8rem; transition: var(--transition); }
        .card:hover .card-link i { transform: translateX(4px); }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 32px;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-align: center;
            line-height: 1.4;
        }
        .btn:focus-visible { outline: 3px solid var(--secondary); outline-offset: 2px; }
        .btn-primary {
            background: var(--primary);
            color: #fff;
        }
        .btn-primary:hover { background: var(--primary-dark); color: #fff; transform: translateY(-2px); box-shadow: var(--shadow-md); }
        .btn-secondary {
            background: transparent;
            color: var(--primary-dark);
            border: 2px solid var(--primary);
        }
        .btn-secondary:hover { background: var(--primary-light); transform: translateY(-2px); }
        .btn-accent {
            background: var(--accent);
            color: #fff;
        }
        .btn-accent:hover { background: #e05520; color: #fff; transform: translateY(-2px); box-shadow: var(--shadow-md); }
        .btn-lg { padding: 16px 44px; font-size: 1.1rem; border-radius: var(--radius-md); }

        /* ===== 网格 / 布局 ===== */
        .grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
        .grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 28px; }
        .grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }

        /* ===== 图文区块 ===== */
        .content-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .content-block.reverse { direction: rtl; }
        .content-block.reverse > * { direction: ltr; }
        .content-block-img { border-radius: var(--radius-md); box-shadow: var(--shadow-md); width: 100%; }
        .content-block h2 { font-size: 2rem; margin-bottom: 16px; }
        .content-block p { font-size: 1.05rem; color: var(--text-muted); margin-bottom: 16px; }
        .content-block .btn { margin-top: 8px; }

        /* ===== 数据统计 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }
        .stat-item {
            background: rgba(255,255,255,0.08);
            padding: 28px 16px;
            border-radius: var(--radius-md);
            border: 1px solid rgba(255,255,255,0.10);
            backdrop-filter: blur(4px);
        }
        .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 4px;
        }
        .stat-label { font-size: 0.95rem; color: rgba(255,255,255,0.8); }

        /* ===== 流程步骤 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
            counter-reset: step;
        }
        .step-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-card);
            position: relative;
            text-align: center;
            transition: var(--transition);
        }
        .step-item:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
        .step-item::before {
            counter-increment: step;
            content: "0" counter(step);
            display: block;
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--primary-light);
            line-height: 1;
            margin-bottom: 12px;
        }
        .step-item h3 { font-size: 1.2rem; margin-bottom: 8px; }
        .step-item p { font-size: 0.92rem; color: var(--text-muted); margin-bottom: 0; }

        /* ===== 对比卡 ===== */
        .compare-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
        }
        .compare-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-card);
            transition: var(--transition);
        }
        .compare-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
        .compare-card h3 { font-size: 1.2rem; margin-bottom: 12px; display: flex; align-items: center; gap: 8px; }
        .compare-card ul li {
            padding: 6px 0;
            font-size: 0.95rem;
            color: var(--text-body);
            display: flex;
            align-items: flex-start;
            gap: 8px;
        }
        .compare-card ul li i { color: var(--primary); margin-top: 3px; flex-shrink: 0; }

        /* ===== 评分条 ===== */
        .rating-bar-wrap { margin-bottom: 16px; }
        .rating-bar-label { display: flex; justify-content: space-between; font-size: 0.9rem; font-weight: 600; margin-bottom: 4px; }
        .rating-bar-track {
            background: var(--border-light);
            height: 10px;
            border-radius: 50px;
            overflow: hidden;
        }
        .rating-bar-fill {
            height: 100%;
            border-radius: 50px;
            background: linear-gradient(90deg, var(--primary), #4ddb7a);
            transition: width 1s ease;
        }

        /* ===== FAQ ===== */
        .faq-list { max-width: 800px; margin: 0 auto; }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-sm);
            margin-bottom: 12px;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: var(--primary); }
        .faq-question {
            padding: 18px 24px;
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--text-dark);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
        }
        .faq-question:focus-visible { outline: 3px solid var(--secondary); outline-offset: -2px; }
        .faq-question i { color: var(--primary); transition: var(--transition); font-size: 0.9rem; }
        .faq-item.active .faq-question i { transform: rotate(180deg); }
        .faq-answer {
            padding: 0 24px 18px;
            color: var(--text-muted);
            font-size: 0.98rem;
            display: none;
            line-height: 1.8;
        }
        .faq-item.active .faq-answer { display: block; }

        /* ===== CTA ===== */
        .cta-block {
            background: linear-gradient(135deg, var(--primary-dark), #0d4d2e);
            border-radius: var(--radius-lg);
            padding: 56px 40px;
            text-align: center;
            color: #fff;
        }
        .cta-block h2 { color: #fff; font-size: 2.2rem; margin-bottom: 12px; }
        .cta-block p { color: rgba(255,255,255,0.82); font-size: 1.1rem; max-width: 600px; margin: 0 auto 28px; }
        .cta-block .btn { margin: 4px 8px; }

        /* ===== 标签 ===== */
        .tag-list { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 16px; }
        .tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary-dark);
            font-size: 0.8rem;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 50px;
            transition: var(--transition);
        }
        .tag:hover { background: var(--primary); color: #fff; }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.8);
            padding: 56px 0 28px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }
        .footer-brand .logo { color: #fff; margin-bottom: 16px; }
        .footer-brand .logo i { color: #4ddb7a; }
        .footer-brand p { font-size: 0.9rem; line-height: 1.7; color: rgba(255,255,255,0.7); max-width: 360px; }
        .footer-col h4 { color: #fff; font-size: 1rem; margin-bottom: 16px; font-weight: 700; }
        .footer-col ul li { margin-bottom: 10px; }
        .footer-col ul li a { color: rgba(255,255,255,0.7); font-size: 0.9rem; transition: var(--transition); display: inline-flex; align-items: center; gap: 6px; }
        .footer-col ul li a:hover { color: #4ddb7a; padding-left: 4px; }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.6);
        }
        .footer-social { display: flex; gap: 12px; }
        .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255,255,255,0.06);
            color: rgba(255,255,255,0.7);
            font-size: 1.1rem;
            transition: var(--transition);
        }
        .footer-social a:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .grid-4 { grid-template-columns: repeat(2, 1fr); }
        }

        @media (max-width: 768px) {
            .menu-toggle { display: block; }
            .nav-list {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(255,255,255,0.98);
                backdrop-filter: blur(12px);
                flex-direction: column;
                padding: 16px 24px 24px;
                border-bottom: 1px solid var(--border-light);
                box-shadow: var(--shadow-md);
                gap: 6px;
            }
            .nav-list.mobile-open { display: flex; }
            .nav-list a { padding: 12px 18px; width: 100%; border-radius: var(--radius-sm); }
            .nav-cta { justify-content: center; }
            .page-hero h1 { font-size: 2.2rem; }
            .page-hero p { font-size: 1rem; }
            .section-title { font-size: 1.8rem; }
            .section { padding: 56px 0; }
            .grid-2, .grid-3, .content-block { grid-template-columns: 1fr; gap: 24px; }
            .steps-grid { grid-template-columns: 1fr; gap: 20px; }
            .compare-grid { grid-template-columns: 1fr; }
            .cta-block { padding: 36px 24px; }
            .cta-block h2 { font-size: 1.6rem; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .content-block.reverse { direction: ltr; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
            .stat-number { font-size: 2rem; }
        }

        @media (max-width: 520px) {
            .page-hero { min-height: 280px; padding: 56px 20px 40px; }
            .page-hero h1 { font-size: 1.7rem; }
            .header-inner { padding: 0 16px; }
            .container-custom { padding: 0 16px; }
            .section { padding: 40px 0; }
            .section-title { font-size: 1.5rem; }
            .grid-4 { grid-template-columns: 1fr; }
            .stats-grid { grid-template-columns: 1fr 1fr; }
            .btn-lg { padding: 14px 28px; font-size: 1rem; }
            .card-body { padding: 16px 18px 20px; }
        }

        /* ===== 工具类 ===== */
        .mt-1 { margin-top: 8px; }
        .mt-2 { margin-top: 16px; }
        .mt-3 { margin-top: 24px; }
        .mt-4 { margin-top: 32px; }
        .mb-2 { margin-bottom: 16px; }
        .mb-3 { margin-bottom: 24px; }
        .gap-1 { gap: 8px; }
        .gap-2 { gap: 16px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }
        .flex-wrap { flex-wrap: wrap; }
        .w-full { width: 100%; }

/* roulang page: article */
/* ===== :root 设计变量 ===== */
        :root {
            --primary: #d32f2f;
            --primary-dark: #b71c1c;
            --primary-light: #ffcdd2;
            --accent: #ff6f00;
            --accent-light: #ffe0b2;
            --bg: #fafafa;
            --bg-alt: #f5f5f5;
            --bg-dark: #1a1a2e;
            --text: #212121;
            --text-light: #616161;
            --text-white: #ffffff;
            --border: #e0e0e0;
            --radius: 12px;
            --radius-sm: 8px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 6px 24px rgba(0, 0, 0, 0.10);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.14);
            --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --font: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            --container: 1200px;
            --nav-height: 72px;
        }

        /* ===== Reset / Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

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

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

        a:hover,
        a:focus {
            color: var(--primary-dark);
            outline: 2px solid var(--primary-light);
            outline-offset: 2px;
        }

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

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

        ul,
        ol {
            list-style: none;
        }

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

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

        /* ===== Header / 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }

        .site-header .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.5px;
        }

        .logo i {
            font-size: 1.8rem;
            color: var(--accent);
        }

        .logo a {
            color: inherit;
        }

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

        .nav-list {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-list a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text);
            transition: var(--transition);
            position: relative;
        }

        .nav-list a:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
        }

        .nav-list a.active {
            background: var(--primary);
            color: var(--text-white);
        }

        .nav-list a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 60%;
            height: 3px;
            background: var(--accent);
            border-radius: 4px;
        }

        .nav-list a.nav-cta {
            background: var(--accent);
            color: var(--text-white);
            padding: 8px 24px;
            border-radius: 50px;
            display: flex;
            align-items: center;
            gap: 6px;
            font-weight: 700;
        }

        .nav-list a.nav-cta:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.8rem;
            color: var(--text);
            cursor: pointer;
            padding: 4px 8px;
            border-radius: var(--radius-sm);
        }

        .nav-toggle:hover {
            background: var(--bg-alt);
        }

        @media (max-width: 768px) {
            .nav-list {
                display: none;
                flex-direction: column;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(12px);
                padding: 16px 24px;
                gap: 4px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-lg);
            }

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

            .nav-list a {
                padding: 12px 16px;
                width: 100%;
                border-radius: var(--radius-sm);
            }

            .nav-list a.nav-cta {
                justify-content: center;
                margin-top: 8px;
            }

            .nav-toggle {
                display: block;
            }
        }

        /* ===== 文章横幅 Hero ===== */
        .article-hero {
            position: relative;
            background: var(--bg-dark);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            padding: 80px 0 60px;
            color: var(--text-white);
            overflow: hidden;
        }

        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(0, 0, 0, 0.80) 0%, rgba(0, 0, 0, 0.45) 100%);
            z-index: 1;
        }

        .article-hero .container-custom {
            position: relative;
            z-index: 2;
        }

        .article-hero .breadcrumb {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 20px;
        }

        .article-hero .breadcrumb a {
            color: rgba(255, 255, 255, 0.85);
        }

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

        .article-hero .breadcrumb span {
            color: rgba(255, 255, 255, 0.5);
        }

        .article-hero h1 {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 16px;
            max-width: 900px;
            text-shadow: 0 2px 16px rgba(0, 0, 0, 0.3);
        }

        .article-hero .meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.80);
        }

        .article-hero .meta i {
            margin-right: 6px;
            color: var(--accent-light);
        }

        .article-hero .meta .badge {
            background: var(--accent);
            color: #fff;
            padding: 4px 14px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.85rem;
        }

        @media (max-width: 768px) {
            .article-hero {
                padding: 60px 0 40px;
            }
            .article-hero h1 {
                font-size: 1.8rem;
            }
            .article-hero .meta {
                gap: 12px;
                font-size: 0.85rem;
            }
        }

        @media (max-width: 520px) {
            .article-hero h1 {
                font-size: 1.4rem;
            }
        }

        /* ===== 文章主体 ===== */
        .article-main {
            padding: 60px 0 80px;
            background: var(--bg);
        }

        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 48px;
            align-items: start;
        }

        .article-content {
            background: #fff;
            border-radius: var(--radius);
            padding: 40px 48px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
        }

        .article-content .post-body {
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--text);
        }

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

        .article-content .post-body h2,
        .article-content .post-body h3 {
            margin-top: 1.6em;
            margin-bottom: 0.6em;
            font-weight: 700;
            color: var(--primary-dark);
        }

        .article-content .post-body ul,
        .article-content .post-body ol {
            margin-bottom: 1.2em;
            padding-left: 1.6em;
            list-style: disc;
        }

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

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

        .article-content .post-body blockquote {
            border-left: 4px solid var(--primary);
            background: var(--primary-light);
            padding: 16px 20px;
            margin: 20px 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            font-style: italic;
            color: var(--text-light);
        }

        .article-content .post-body a {
            color: var(--primary);
            text-decoration: underline;
        }

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

        .article-footer-meta {
            margin-top: 40px;
            padding-top: 24px;
            border-top: 1px solid var(--border);
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: space-between;
            align-items: center;
        }

        .article-footer-meta .tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .article-footer-meta .tags .tag {
            background: var(--bg-alt);
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.85rem;
            color: var(--text-light);
            border: 1px solid var(--border);
        }

        .article-footer-meta .share {
            display: flex;
            gap: 12px;
            align-items: center;
        }

        .article-footer-meta .share a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--bg-alt);
            color: var(--text);
            border: 1px solid var(--border);
            transition: var(--transition);
        }

        .article-footer-meta .share a:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            transform: translateY(-2px);
        }

        /* ===== 侧边栏 ===== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 32px;
        }

        .sidebar-card {
            background: #fff;
            border-radius: var(--radius);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
        }

        .sidebar-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .sidebar-card h3 i {
            color: var(--accent);
        }

        .sidebar-card ul li {
            padding: 10px 0;
            border-bottom: 1px solid var(--border);
        }

        .sidebar-card ul li:last-child {
            border-bottom: none;
        }

        .sidebar-card ul li a {
            color: var(--text);
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .sidebar-card ul li a:hover {
            color: var(--primary);
        }

        .sidebar-card ul li a i {
            color: var(--primary-light);
            font-size: 0.75rem;
        }

        .sidebar-card .cta-box {
            background: var(--bg-dark);
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            border-radius: var(--radius-sm);
            padding: 24px;
            color: #fff;
            margin-top: 16px;
        }

        .sidebar-card .cta-box h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .sidebar-card .cta-box p {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 16px;
        }

        .sidebar-card .cta-box .btn {
            background: var(--accent);
            color: #fff;
            padding: 10px 24px;
            border-radius: 50px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }

        .sidebar-card .cta-box .btn:hover {
            background: #fff;
            color: var(--primary-dark);
            transform: translateY(-2px);
        }

        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .article-content {
                padding: 28px 24px;
            }
            .article-sidebar {
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }

        @media (max-width: 640px) {
            .article-content {
                padding: 20px 16px;
            }
            .article-sidebar {
                grid-template-columns: 1fr;
            }
            .article-footer-meta {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        /* ===== 相关推荐板块 ===== */
        .related-section {
            padding: 60px 0;
            background: var(--bg-alt);
        }

        .related-section .section-title {
            text-align: center;
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 40px;
            color: var(--text);
        }

        .related-section .section-title span {
            color: var(--primary);
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .related-card {
            background: #fff;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: var(--transition);
        }

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

        .related-card .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: 0;
        }

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

        .related-card .card-body .badge {
            background: var(--primary-light);
            color: var(--primary-dark);
            padding: 2px 12px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            display: inline-block;
            margin-bottom: 10px;
        }

        .related-card .card-body h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .related-card .card-body h4 a {
            color: var(--text);
        }

        .related-card .card-body h4 a:hover {
            color: var(--primary);
        }

        .related-card .card-body p {
            font-size: 0.9rem;
            color: var(--text-light);
            line-height: 1.6;
            margin-bottom: 12px;
        }

        .related-card .card-body .meta-sm {
            font-size: 0.8rem;
            color: var(--text-light);
            display: flex;
            gap: 16px;
        }

        .related-card .card-body .meta-sm i {
            margin-right: 4px;
            color: var(--primary-light);
        }

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

        @media (max-width: 640px) {
            .related-grid {
                grid-template-columns: 1fr;
            }
            .related-section .section-title {
                font-size: 1.5rem;
            }
        }

        /* ===== 内容未找到 ===== */
        .not-found-box {
            text-align: center;
            padding: 80px 24px;
            background: #fff;
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
        }

        .not-found-box i {
            font-size: 4rem;
            color: var(--primary-light);
            margin-bottom: 20px;
        }

        .not-found-box h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text);
        }

        .not-found-box p {
            font-size: 1.1rem;
            color: var(--text-light);
            margin-bottom: 24px;
        }

        .not-found-box .btn-home {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: #fff;
            padding: 12px 32px;
            border-radius: 50px;
            font-weight: 600;
            transition: var(--transition);
        }

        .not-found-box .btn-home:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        /* ===== FAQ 板块 ===== */
        .faq-section {
            padding: 60px 0;
            background: var(--bg);
        }

        .faq-section .section-title {
            text-align: center;
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 40px;
            color: var(--text);
        }

        .faq-section .section-title span {
            color: var(--primary);
        }

        .faq-grid {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-item {
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            padding: 20px 24px;
            transition: var(--transition);
            cursor: pointer;
        }

        .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }

        .faq-item .faq-q {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--text);
        }

        .faq-item .faq-q i {
            color: var(--primary);
            transition: var(--transition);
        }

        .faq-item .faq-a {
            margin-top: 12px;
            color: var(--text-light);
            line-height: 1.7;
            display: none;
        }

        .faq-item.open .faq-a {
            display: block;
        }

        .faq-item.open .faq-q i {
            transform: rotate(180deg);
        }

        /* ===== CTA 板块 ===== */
        .cta-section {
            padding: 60px 0;
            background: var(--bg-dark);
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
            color: #fff;
            text-align: center;
        }

        .cta-section .overlay {
            background: rgba(0, 0, 0, 0.65);
            padding: 60px 24px;
            border-radius: var(--radius);
        }

        .cta-section h2 {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 16px;
        }

        .cta-section p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 600px;
            margin: 0 auto 28px;
        }

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

        .cta-section .btn-primary {
            background: var(--accent);
            color: #fff;
            padding: 14px 36px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.05rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .cta-section .btn-primary:hover {
            background: #fff;
            color: var(--primary-dark);
            transform: translateY(-3px);
            box-shadow: var(--shadow-lg);
        }

        .cta-section .btn-outline {
            background: transparent;
            color: #fff;
            padding: 14px 36px;
            border-radius: 50px;
            font-weight: 600;
            border: 2px solid rgba(255, 255, 255, 0.6);
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .cta-section .btn-outline:hover {
            background: rgba(255, 255, 255, 0.15);
            border-color: #fff;
            transform: translateY(-3px);
        }

        @media (max-width: 640px) {
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .cta-section .btn-group {
                flex-direction: column;
                align-items: center;
            }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.85);
            padding: 60px 0 30px;
        }

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

        .site-footer .footer-brand .logo {
            color: #fff;
            margin-bottom: 14px;
        }

        .site-footer .footer-brand .logo i {
            color: var(--accent-light);
        }

        .site-footer .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
            max-width: 320px;
        }

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

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

        .site-footer .footer-col ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            transition: var(--transition);
        }

        .site-footer .footer-col ul li a:hover {
            color: #fff;
            padding-left: 4px;
        }

        .site-footer .footer-col ul li a i {
            margin-right: 6px;
            color: var(--accent-light);
        }

        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.5);
        }

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

        .site-footer .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            color: rgba(255, 255, 255, 0.6);
            transition: var(--transition);
        }

        .site-footer .footer-social a:hover {
            background: var(--accent);
            color: #fff;
            transform: translateY(-2px);
        }

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

        @media (max-width: 640px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== 辅助 ===== */
        .text-center {
            text-align: center;
        }
        .mt-2 {
            margin-top: 20px;
        }
        .mb-2 {
            margin-bottom: 20px;
        }

        /* ===== 骨架 / 加载 ===== */
        .skeleton {
            background: linear-gradient(90deg, var(--bg-alt) 25%, #e8e8e8 50%, var(--bg-alt) 75%);
            background-size: 200% 100%;
            animation: shimmer 1.6s infinite;
            border-radius: var(--radius-sm);
        }

        @keyframes shimmer {
            0% {
                background-position: 200% 0;
            }
            100% {
                background-position: -200% 0;
            }
        }