/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0d1b4c;
            --primary-light: #1a2f6d;
            --primary-lighter: #2a408c;
            --accent: #e8a733;
            --accent-light: #f6c45f;
            --accent-dark: #c98a1e;
            --bg: #f5f7fb;
            --bg-alt: #eef1f8;
            --bg-dark: #0b1433;
            --card-bg: #ffffff;
            --text: #182338;
            --text-muted: #657087;
            --text-light: #aab3c5;
            --border: #e7ebf3;
            --radius: 18px;
            --radius-sm: 12px;
            --shadow: 0 8px 30px rgba(13, 27, 76, 0.08);
            --shadow-lg: 0 20px 50px rgba(13, 27, 76, 0.14);
            --transition: all 0.3s ease;
            --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }

        /* ===== 基础重置 ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-family);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            font-size: 15px;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input {
            font-family: inherit;
        }
        ul,
        ol {
            list-style: none;
        }

        /* ===== 容器 ===== */
        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
            margin: 0 auto;
        }

        /* ===== 按钮 ===== */
        .btn-accent {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
            color: #1a1405;
            font-weight: 700;
            font-size: 14px;
            padding: 12px 24px;
            border: none;
            border-radius: 50px;
            box-shadow: 0 4px 16px rgba(232, 167, 51, 0.35);
            transition: var(--transition);
            cursor: pointer;
            letter-spacing: 0.3px;
        }
        .btn-accent:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(232, 167, 51, 0.45);
            color: #1a1405;
        }
        .btn-accent:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(232, 167, 51, 0.3);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: transparent;
            color: #fff;
            font-weight: 600;
            font-size: 14px;
            padding: 11px 24px;
            border: 1.5px solid rgba(255, 255, 255, 0.5);
            border-radius: 50px;
            transition: var(--transition);
            cursor: pointer;
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
            color: #fff;
            transform: translateY(-2px);
        }

        .btn-dark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            font-size: 14px;
            padding: 12px 26px;
            border: none;
            border-radius: 50px;
            box-shadow: 0 4px 14px rgba(13, 27, 76, 0.2);
            transition: var(--transition);
            cursor: pointer;
        }
        .btn-dark:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
            color: #fff;
        }

        /* ===== Header 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 1px 12px rgba(13, 27, 76, 0.05);
        }
        .header-nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 14px 0;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .brand-icon {
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-size: 18px;
            box-shadow: 0 4px 12px rgba(13, 27, 76, 0.25);
        }
        .brand-text {
            font-size: 19px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-shrink: 0;
        }
        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 9px 18px;
            border-radius: 30px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text);
            position: relative;
            transition: var(--transition);
        }
        .nav-link:hover {
            color: var(--primary);
            background: var(--bg-alt);
        }
        .nav-link.active {
            color: var(--primary);
            background: rgba(13, 27, 76, 0.08);
            font-weight: 700;
        }
        .nav-tools {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .search-box {
            display: flex;
            align-items: center;
            gap: 8px;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 30px;
            padding: 8px 16px;
            width: 200px;
            transition: var(--transition);
        }
        .search-box:focus-within {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(232, 167, 51, 0.15);
            background: #fff;
        }
        .search-box i {
            color: var(--text-muted);
            font-size: 13px;
        }
        .search-box input {
            border: none;
            outline: none;
            background: transparent;
            font-size: 13px;
            color: var(--text);
            width: 100%;
        }
        .search-box input::placeholder {
            color: var(--text-light);
        }
        .nav-toggle {
            display: none;
            background: transparent;
            border: 1px solid var(--border);
            border-radius: 10px;
            width: 42px;
            height: 42px;
            font-size: 18px;
            color: var(--primary);
            cursor: pointer;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
        }
        .nav-toggle:hover {
            background: var(--bg-alt);
        }

        /* ===== Hero 首屏 ===== */
        .hero-section {
            position: relative;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            padding: 100px 0 80px;
            overflow: hidden;
        }
        .hero-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13, 27, 76, 0.92) 0%, rgba(13, 27, 76, 0.72) 50%, rgba(13, 27, 76, 0.45) 100%);
        }
        .hero-inner {
            position: relative;
            z-index: 2;
            max-width: 760px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.22);
            border-radius: 30px;
            padding: 6px 18px;
            color: #fff;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 28px;
            backdrop-filter: blur(6px);
        }
        .hero-badge i {
            color: var(--accent);
        }
        .hero-title {
            color: #fff;
            font-size: 48px;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 20px;
            letter-spacing: 1px;
        }
        .hero-title span {
            color: var(--accent);
        }
        .hero-subtitle {
            color: rgba(255, 255, 255, 0.85);
            font-size: 16px;
            line-height: 1.8;
            margin-bottom: 36px;
            max-width: 640px;
        }
        .hero-btns {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 56px;
        }

        /* ===== 统计条 ===== */
        .hero-stats {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            padding-top: 40px;
        }
        .stat-item {
            padding: 8px 4px;
        }
        .stat-number {
            font-size: 34px;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            font-variant-numeric: tabular-nums;
        }
        .stat-number em {
            font-style: normal;
            color: var(--accent);
            font-size: 22px;
            margin-left: 2px;
        }
        .stat-label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 4px;
            letter-spacing: 0.5px;
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: 88px 0;
        }
        .section-alt {
            background: var(--bg-alt);
        }
        .section-header {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 50px;
        }
        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(232, 167, 51, 0.12);
            color: var(--accent-dark);
            font-size: 13px;
            font-weight: 700;
            padding: 5px 16px;
            border-radius: 30px;
            margin-bottom: 14px;
            letter-spacing: 1px;
        }
        .section-title {
            font-size: 34px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.3;
            margin-bottom: 14px;
        }
        .section-desc {
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.8;
        }

        /* ===== 核心优势 ===== */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .feature-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 32px 26px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .feature-card::after {
            content: "";
            position: absolute;
            top: -50px;
            right: -50px;
            width: 100px;
            height: 100px;
            border-radius: 50%;
            background: rgba(232, 167, 51, 0.08);
            transition: var(--transition);
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(232, 167, 51, 0.3);
        }
        .feature-card:hover::after {
            transform: scale(2.2);
        }
        .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: 14px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-size: 22px;
            margin-bottom: 20px;
            box-shadow: 0 6px 16px rgba(13, 27, 76, 0.2);
            position: relative;
            z-index: 2;
        }
        .feature-card h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 10px;
            position: relative;
            z-index: 2;
        }
        .feature-card p {
            font-size: 13.5px;
            color: var(--text-muted);
            line-height: 1.7;
            position: relative;
            z-index: 2;
        }

        /* ===== 分类入口 ===== */
        .category-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
        }
        .category-card {
            position: relative;
            border-radius: var(--radius);
            overflow: hidden;
            border: none;
            box-shadow: var(--shadow);
            transition: var(--transition);
            display: block;
            background: var(--card-bg);
        }
        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }
        .category-card .card-img {
            height: 240px;
            background: var(--primary-light);
            position: relative;
            overflow: hidden;
        }
        .category-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .category-card:hover .card-img img {
            transform: scale(1.06);
        }
        .category-card .card-img::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(13, 27, 76, 0) 30%, rgba(13, 27, 76, 0.4) 100%);
        }
        .category-card .card-body {
            padding: 28px;
            position: relative;
        }
        .category-card .card-body h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
        }
        .category-card .card-body p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .category-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 700;
            color: var(--accent-dark);
            transition: var(--transition);
        }
        .category-link i {
            transition: transform 0.3s ease;
        }
        .category-link:hover i {
            transform: translateX(4px);
        }

        /* ===== 资讯列表 ===== */
        .news-section {
            background: var(--bg);
        }
        .news-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            padding: 26px;
            height: 100%;
            display: flex;
            flex-direction: column;
            transition: var(--transition);
        }
        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
        .news-card-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 14px;
        }
        .news-badge {
            display: inline-block;
            background: rgba(13, 27, 76, 0.08);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 20px;
        }
        .news-date {
            font-size: 12px;
            color: var(--text-light);
        }
        .news-title {
            font-size: 16px;
            font-weight: 700;
            line-height: 1.5;
            margin-bottom: 10px;
        }
        .news-title a {
            color: var(--text);
        }
        .news-title a:hover {
            color: var(--accent-dark);
        }
        .news-excerpt {
            font-size: 13.5px;
            color: var(--text-muted);
            line-height: 1.7;
            flex: 1;
            margin-bottom: 16px;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
        }
        .news-link i {
            transition: transform 0.3s ease;
        }
        .news-link:hover i {
            transform: translateX(4px);
        }
        .empty-state {
            text-align: center;
            padding: 60px 20px;
            background: var(--card-bg);
            border-radius: var(--radius);
            border: 1px dashed var(--border);
            color: var(--text-muted);
            font-size: 15px;
        }

        /* ===== 快速上手流程 ===== */
        .steps-section {
            position: relative;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            padding: 88px 0;
        }
        .steps-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11, 20, 51, 0.95) 0%, rgba(13, 27, 76, 0.85) 100%);
        }
        .steps-section .container {
            position: relative;
            z-index: 2;
        }
        .steps-section .section-title {
            color: #fff;
        }
        .steps-section .section-desc {
            color: rgba(255, 255, 255, 0.7);
        }
        .steps-section .section-tag {
            background: rgba(232, 167, 51, 0.18);
            color: var(--accent);
        }
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
            margin-top: 50px;
        }
        .step-item {
            position: relative;
            padding: 36px 28px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius);
            backdrop-filter: blur(8px);
            transition: var(--transition);
        }
        .step-item:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-4px);
            border-color: rgba(232, 167, 51, 0.3);
        }
        .step-num {
            font-size: 48px;
            font-weight: 800;
            color: var(--accent);
            line-height: 1;
            opacity: 0.4;
            position: absolute;
            top: 20px;
            right: 22px;
            font-variant-numeric: tabular-nums;
        }
        .step-item h3 {
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .step-item p {
            color: rgba(255, 255, 255, 0.7);
            font-size: 14px;
            line-height: 1.7;
        }

        /* ===== 数据面板 ===== */
        .platform-data {
            background: var(--bg-dark);
            padding: 72px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .data-panel {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
        }
        .data-item {
            text-align: center;
            padding: 24px 16px;
        }
        .data-item .data-value {
            font-size: 42px;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
            font-variant-numeric: tabular-nums;
        }
        .data-item .data-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            margin-top: 8px;
            letter-spacing: 1px;
        }
        .data-item .data-icon {
            font-size: 24px;
            color: rgba(255, 255, 255, 0.4);
            margin-bottom: 12px;
        }

        /* ===== FAQ ===== */
        .faq-wrap {
            max-width: 820px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            margin-bottom: 14px;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(232, 167, 51, 0.3);
            box-shadow: var(--shadow);
        }
        .faq-item summary {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 22px 28px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            list-style: none;
            transition: var(--transition);
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary i {
            color: var(--accent);
            font-size: 14px;
            flex-shrink: 0;
            transition: transform 0.3s ease;
        }
        .faq-item summary:hover {
            color: var(--primary);
        }
        .faq-item[open] summary i {
            transform: rotate(180deg);
        }
        .faq-item .faq-answer {
            padding: 0 28px 24px;
            font-size: 14.5px;
            color: var(--text-muted);
            line-height: 1.8;
            border-top: 1px solid var(--border);
            margin-top: 0;
            padding-top: 18px;
        }

        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            padding: 88px 0;
            text-align: center;
        }
        .cta-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13, 27, 76, 0.88) 0%, rgba(13, 27, 76, 0.75) 100%);
        }
        .cta-inner {
            position: relative;
            z-index: 2;
            max-width: 640px;
            margin: 0 auto;
        }
        .cta-inner h2 {
            color: #fff;
            font-size: 36px;
            font-weight: 800;
            margin-bottom: 16px;
            line-height: 1.3;
        }
        .cta-inner p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 16px;
            line-height: 1.8;
            margin-bottom: 36px;
        }
        .cta-btns {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 14px;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            padding: 64px 0 24px;
            color: rgba(255, 255, 255, 0.7);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 40px;
            margin-bottom: 48px;
        }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }
        .footer-brand .brand-icon {
            width: 38px;
            height: 38px;
            font-size: 16px;
        }
        .footer-brand .brand-text {
            color: #fff;
            font-size: 18px;
        }
        .footer-desc {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.55);
            max-width: 320px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 18px;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.55);
            transition: var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-contact li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.55);
            margin-bottom: 12px;
        }
        .footer-contact li i {
            color: var(--accent);
            margin-top: 3px;
            width: 16px;
            text-align: center;
        }
        .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: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 991px) {
            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .data-panel {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .hero-stats {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .nav-links {
                position: fixed;
                top: 70px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                align-items: stretch;
                padding: 16px 20px;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 10px 30px rgba(13, 27, 76, 0.1);
                display: none;
                z-index: 999;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-link {
                padding: 12px 18px;
            }
            .nav-toggle {
                display: inline-flex;
            }
            .nav-tools .search-box {
                display: none;
            }
            .hero-title {
                font-size: 38px;
            }
        }
        @media (max-width: 767px) {
            .section {
                padding: 60px 0;
            }
            .section-title {
                font-size: 28px;
            }
            .category-grid {
                grid-template-columns: 1fr;
            }
            .feature-grid {
                grid-template-columns: 1fr;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .hero-section {
                padding: 64px 0 56px;
            }
            .hero-title {
                font-size: 30px;
            }
            .hero-subtitle {
                font-size: 14.5px;
            }
            .hero-btns {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-btns .btn-accent,
            .hero-btns .btn-outline {
                width: 100%;
            }
            .hero-stats {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
                padding-top: 28px;
            }
            .stat-number {
                font-size: 26px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                justify-content: center;
            }
            .cta-inner h2 {
                font-size: 28px;
            }
            .platform-data {
                padding: 48px 0;
            }
            .data-panel {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .data-item .data-value {
                font-size: 32px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .brand-text {
                font-size: 17px;
            }
            .brand-icon {
                width: 36px;
                height: 36px;
                font-size: 15px;
            }
            .hero-title {
                font-size: 26px;
            }
            .nav-tools .btn-accent {
                display: none;
            }
            .nav-toggle {
                width: 38px;
                height: 38px;
                font-size: 16px;
            }
            .stats {
                grid-template-columns: 1fr 1fr;
            }
            .faq-item summary {
                padding: 18px 20px;
                font-size: 15px;
            }
            .faq-item .faq-answer {
                padding: 0 20px 20px;
            }
            .data-item .data-value {
                font-size: 26px;
            }
            .data-item .data-label {
                font-size: 12px;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #c8a45c;
            --primary-dark: #a8863f;
            --primary-light: #f0e2c4;
            --accent: #e8543a;
            --accent-dark: #c93e26;
            --dark: #0c0f14;
            --dark-light: #161b23;
            --dark-card: #1d242e;
            --bg: #f5f7fa;
            --bg-white: #ffffff;
            --text-main: #1e2530;
            --text-sub: #52606d;
            --text-light: #8a97a5;
            --border: #e6ebf0;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow-sm: 0 4px 14px rgba(0,0,0,.06);
            --shadow: 0 12px 30px rgba(0,0,0,.08);
            --shadow-lg: 0 24px 50px rgba(0,0,0,.14);
            --transition: all .3s ease;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: "Inter", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            background: var(--bg);
            color: var(--text-main);
            line-height: 1.7;
            font-size: 16px;
        }

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

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

        button,
        input {
            font-family: inherit;
        }

        .container {
            max-width: 1200px;
            padding-left: 24px;
            padding-right: 24px;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
            transition: var(--transition);
        }

        .site-header .header-nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 72px;
            gap: 20px;
        }

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

        .brand-icon {
            width: 38px;
            height: 38px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), #e8c87e);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 16px;
            box-shadow: 0 4px 12px rgba(200, 164, 92, .4);
        }

        .brand-text {
            font-size: 18px;
            font-weight: 700;
            letter-spacing: .3px;
            color: var(--dark);
            white-space: nowrap;
        }

        .nav-links {
            display: flex;
            gap: 8px;
            align-items: center;
            margin: 0 auto;
        }

        .nav-link {
            padding: 9px 18px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-sub);
            transition: var(--transition);
            white-space: nowrap;
        }

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

        .nav-link.active {
            color: #fff;
            background: var(--primary);
            font-weight: 600;
            box-shadow: 0 6px 18px rgba(200, 164, 92, .3);
        }

        .nav-tools {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .search-box {
            display: flex;
            align-items: center;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 999px;
            padding: 8px 16px;
            gap: 8px;
            min-width: 200px;
            transition: var(--transition);
        }

        .search-box:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(200, 164, 92, .15);
            background: #fff;
        }

        .search-box i {
            color: var(--text-light);
            font-size: 13px;
        }

        .search-box input {
            border: none;
            outline: none;
            background: transparent;
            font-size: 14px;
            width: 100%;
            color: var(--text-main);
        }

        .search-box input::placeholder {
            color: var(--text-light);
        }

        .btn-accent {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: #fff;
            border: none;
            border-radius: 999px;
            padding: 11px 24px;
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
            box-shadow: 0 6px 18px rgba(232, 84, 58, .25);
        }

        .btn-accent:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(232, 84, 58, .35);
            color: #fff;
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: transparent;
            border: 1px solid var(--border);
            color: var(--text-main);
            border-radius: 999px;
            padding: 10px 22px;
            font-size: 14px;
            font-weight: 600;
            transition: var(--transition);
        }

        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary-dark);
            background: var(--primary-light);
            transform: translateY(-2px);
        }

        .btn-dark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--dark);
            color: #fff;
            border: none;
            border-radius: 999px;
            padding: 12px 26px;
            font-size: 14px;
            font-weight: 600;
            transition: var(--transition);
        }

        .btn-dark:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 10px 24px rgba(0, 0, 0, .2);
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 22px;
            color: var(--text-main);
            cursor: pointer;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            align-items: center;
            justify-content: center;
        }

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

        /* Category Hero */
        .page-hero {
            position: relative;
            background: linear-gradient(135deg, #0c0f14 0%, #1a2029 60%, #2b2f3a 100%);
            padding: 90px 0 80px;
            color: #fff;
            overflow: hidden;
        }

        .page-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: .22;
            z-index: 0;
        }

        .page-hero::after {
            content: "";
            position: absolute;
            top: -60%;
            right: -20%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(200, 164, 92, .35) 0%, transparent 70%);
            z-index: 0;
        }

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

        .hero-breadcrumb {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, .1);
            border: 1px solid rgba(255, 255, 255, .15);
            border-radius: 999px;
            padding: 6px 16px;
            font-size: 13px;
            color: rgba(255, 255, 255, .8);
            margin-bottom: 24px;
            backdrop-filter: blur(8px);
        }

        .hero-breadcrumb a {
            color: rgba(255, 255, 255, .7);
        }

        .hero-breadcrumb a:hover {
            color: var(--primary);
        }

        .hero-breadcrumb i {
            font-size: 11px;
            color: rgba(255, 255, 255, .5);
        }

        .page-hero h1 {
            font-size: 44px;
            font-weight: 800;
            line-height: 1.25;
            margin: 0 0 18px;
            letter-spacing: -1px;
        }

        .page-hero h1 span {
            color: var(--primary);
        }

        .page-hero p {
            font-size: 17px;
            line-height: 1.8;
            color: rgba(255, 255, 255, .75);
            max-width: 620px;
            margin: 0 0 32px;
        }

        .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
        }

        .hero-meta .meta-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: rgba(255, 255, 255, .8);
        }

        .hero-meta .meta-item i {
            color: var(--primary);
            font-size: 16px;
        }

        /* Section base */
        .section {
            padding: 80px 0;
        }

        .section-sm {
            padding: 50px 0;
        }

        .section-head {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 48px;
        }

        .section-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary-dark);
            font-size: 13px;
            font-weight: 700;
            padding: 6px 14px;
            border-radius: 999px;
            letter-spacing: .5px;
            margin-bottom: 14px;
        }

        .section-title {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.35;
            margin: 0 0 12px;
        }

        .section-sub {
            color: var(--text-sub);
            font-size: 16px;
            line-height: 1.8;
            margin: 0;
        }

        /* Category intro */
        .intro-block {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 24px;
            padding: 56px;
            overflow: hidden;
            position: relative;
            box-shadow: var(--shadow-sm);
        }

        .intro-block::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
        }

        .intro-grid {
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .intro-content h2 {
            font-size: 28px;
            font-weight: 700;
            margin: 0 0 16px;
        }

        .intro-content p {
            color: var(--text-sub);
            font-size: 15px;
            line-height: 1.9;
            margin-bottom: 20px;
        }

        .intro-list {
            list-style: none;
            padding: 0;
            margin: 0 0 28px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 12px;
        }

        .intro-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            color: var(--text-main);
        }

        .intro-list li i {
            color: var(--primary);
            margin-top: 3px;
            font-size: 14px;
        }

        .intro-img {
            border-radius: 20px;
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            position: relative;
        }

        .intro-img img {
            width: 100%;
            height: 300px;
            object-fit: cover;
        }

        .intro-img::after {
            content: "55世纪官方网站";
            position: absolute;
            bottom: 16px;
            left: 16px;
            color: #fff;
            background: rgba(0, 0, 0, .55);
            backdrop-filter: blur(6px);
            padding: 8px 16px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: .5px;
        }

        /* Stats */
        .stats-wrap {
            background: var(--dark);
            border-radius: 24px;
            padding: 48px;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .stats-wrap::before {
            content: "";
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: .12;
        }

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

        .stat-item {
            text-align: center;
            padding: 20px 10px;
            border-radius: 16px;
            background: rgba(255, 255, 255, .04);
            border: 1px solid rgba(255, 255, 255, .08);
            transition: var(--transition);
        }

        .stat-item:hover {
            background: rgba(200, 164, 92, .1);
            border-color: rgba(200, 164, 92, .3);
            transform: translateY(-4px);
        }

        .stat-number {
            font-size: 40px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 6px;
        }

        .stat-label {
            font-size: 14px;
            color: rgba(255, 255, 255, .7);
        }

        /* Guide cards */
        .guide-card {
            background: #fff;
            border-radius: 20px;
            padding: 24px;
            height: 100%;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

        .guide-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(200, 164, 92, .4);
        }

        .guide-card-img {
            border-radius: 14px;
            overflow: hidden;
            margin-bottom: 20px;
            position: relative;
            height: 160px;
        }

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

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

        .guide-card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            z-index: 2;
            background: rgba(12, 15, 20, .75);
            backdrop-filter: blur(8px);
            color: #fff;
            font-size: 12px;
            padding: 4px 12px;
            border-radius: 999px;
        }

        .guide-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin: 0 0 10px;
        }

        .guide-card p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.75;
            margin: 0 0 18px;
            flex-grow: 1;
        }

        .guide-card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            border-top: 1px solid var(--border);
            padding-top: 16px;
        }

        .guide-card-footer .badge-guide {
            font-size: 12px;
            color: var(--primary-dark);
            background: var(--primary-light);
            padding: 4px 12px;
            border-radius: 999px;
            font-weight: 600;
        }

        .guide-card-footer a {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary-dark);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .guide-card-footer a:hover {
            gap: 10px;
            color: var(--accent);
        }

        /* Steps */
        .steps-wrap {
            background: #fff;
            border-radius: 24px;
            border: 1px solid var(--border);
            padding: 56px;
            box-shadow: var(--shadow-sm);
        }

        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            counter-reset: step;
        }

        .step-item {
            position: relative;
            padding: 32px 20px 24px;
            background: var(--bg);
            border-radius: 18px;
            border: 1px solid var(--border);
            transition: var(--transition);
            text-align: center;
        }

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

        .step-num {
            width: 48px;
            height: 48px;
            border-radius: 14px;
            background: linear-gradient(135deg, var(--primary), #e8c87e);
            color: #fff;
            font-size: 18px;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            box-shadow: 0 6px 18px rgba(200, 164, 92, .3);
        }

        .step-item h4 {
            font-size: 16px;
            font-weight: 700;
            margin: 0 0 8px;
        }

        .step-item p {
            font-size: 13px;
            color: var(--text-sub);
            margin: 0;
            line-height: 1.7;
        }

        /* Dark feature section */
        .feature-dark {
            background: var(--dark);
            border-radius: 24px;
            padding: 56px;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .feature-dark::before {
            content: "";
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            opacity: .15;
        }

        .feature-dark .section-title {
            color: #fff;
        }

        .feature-dark .section-sub {
            color: rgba(255, 255, 255, .65);
        }

        .feature-dark .container {
            position: relative;
            z-index: 2;
        }

        .feature-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-top: 40px;
        }

        .feature-card {
            background: rgba(255, 255, 255, .05);
            border: 1px solid rgba(255, 255, 255, .1);
            border-radius: 18px;
            padding: 28px;
            transition: var(--transition);
        }

        .feature-card:hover {
            background: rgba(255, 255, 255, .09);
            border-color: rgba(200, 164, 92, .4);
            transform: translateY(-4px);
        }

        .feature-card i {
            color: var(--primary);
            font-size: 24px;
            margin-bottom: 16px;
            display: inline-block;
        }

        .feature-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin: 0 0 10px;
        }

        .feature-card p {
            font-size: 14px;
            color: rgba(255, 255, 255, .65);
            margin: 0;
            line-height: 1.8;
        }

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

        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 16px;
            margin-bottom: 14px;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(200, 164, 92, .4);
            box-shadow: var(--shadow-sm);
        }

        .faq-item summary {
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 20px;
            list-style: none;
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary::after {
            content: "\f078";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            font-size: 12px;
            color: var(--primary);
            transition: var(--transition);
            flex-shrink: 0;
        }

        .faq-item[open] summary::after {
            transform: rotate(180deg);
        }

        .faq-item .faq-body {
            padding: 0 24px 20px;
            color: var(--text-sub);
            font-size: 15px;
            line-height: 1.85;
        }

        /* CTA */
        .cta-section {
            padding: 60px 0 80px;
        }

        .cta-box {
            background: linear-gradient(135deg, #161b23, #1f262f);
            border-radius: 28px;
            padding: 64px 56px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .cta-box::before {
            content: "";
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: .18;
        }

        .cta-box .cta-inner {
            position: relative;
            z-index: 2;
        }

        .cta-box h2 {
            font-size: 34px;
            font-weight: 800;
            margin: 0 0 14px;
        }

        .cta-box p {
            font-size: 16px;
            color: rgba(255, 255, 255, .75);
            max-width: 560px;
            margin: 0 auto 32px;
            line-height: 1.8;
        }

        .cta-buttons {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* Footer */
        .site-footer {
            background: var(--dark);
            color: rgba(255, 255, 255, .7);
            padding: 70px 0 30px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, .08);
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }

        .footer-brand .brand-icon {
            background: linear-gradient(135deg, var(--primary), #e8c87e);
        }

        .footer-brand .brand-text {
            color: #fff;
            font-size: 18px;
            font-weight: 700;
        }

        .footer-desc {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, .6);
            max-width: 300px;
            margin: 0;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 20px;
        }

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

        .footer-col ul li {
            margin-bottom: 12px;
        }

        .footer-col ul a {
            color: rgba(255, 255, 255, .6);
            font-size: 14px;
            transition: var(--transition);
        }

        .footer-col ul a:hover {
            color: var(--primary);
            padding-left: 4px;
        }

        .footer-contact li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: rgba(255, 255, 255, .6);
        }

        .footer-contact li i {
            color: var(--primary);
            width: 16px;
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 24px;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 13px;
            color: rgba(255, 255, 255, .45);
        }

        /* Responsive */
        @media (max-width: 992px) {
            .nav-links {
                position: fixed;
                top: 72px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                padding: 20px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow);
                display: none;
                align-items: stretch;
                gap: 6px;
                border-radius: 0 0 20px 20px;
            }

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

            .nav-link {
                text-align: center;
                padding: 12px;
            }

            .nav-toggle {
                display: flex;
            }

            .search-box {
                display: none;
            }

            .intro-grid,
            .step-grid {
                grid-template-columns: 1fr;
            }

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

            .feature-grid {
                grid-template-columns: 1fr 1fr;
            }

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

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

        @media (max-width: 768px) {
            .section {
                padding: 50px 0;
            }

            .page-hero {
                padding: 60px 0 50px;
            }

            .page-hero h1 {
                font-size: 30px;
            }

            .section-title {
                font-size: 24px;
            }

            .intro-block,
            .steps-wrap,
            .feature-dark {
                padding: 32px 24px;
                border-radius: 18px;
            }

            .intro-list {
                grid-template-columns: 1fr;
            }

            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
                padding: 24px;
            }

            .stat-number {
                font-size: 30px;
            }

            .faq-item summary {
                font-size: 15px;
                padding: 16px 18px;
            }

            .faq-item .faq-body {
                padding: 0 18px 18px;
                font-size: 14px;
            }

            .cta-box {
                padding: 40px 24px;
                border-radius: 20px;
            }

            .cta-box h2 {
                font-size: 24px;
            }

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

            .cta-buttons .btn-accent,
            .cta-buttons .btn-outline {
                width: 100%;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }

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

            .footer-col ul {
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }
        }

        @media (max-width: 520px) {
            .brand-text {
                font-size: 15px;
            }

            .brand-icon {
                width: 32px;
                height: 32px;
                font-size: 14px;
            }

            .nav-links {
                top: 64px;
            }

            .site-header .header-nav {
                min-height: 64px;
            }

            .btn-accent {
                padding: 8px 14px;
                font-size: 12px;
            }

            .stats-grid {
                grid-template-columns: 1fr 1fr;
            }

            .steps-grid {
                grid-template-columns: 1fr;
            }

            .feature-grid {
                grid-template-columns: 1fr;
            }

            .intro-grid {
                grid-template-columns: 1fr;
            }

            .intro-img img {
                height: 200px;
            }

            .footer-col ul {
                grid-template-columns: 1fr;
            }
        }

/* roulang page: article */
:root {
            --primary: #e8a33d;
            --primary-dark: #c9862b;
            --primary-light: #f7d9a0;
            --dark: #141826;
            --dark-2: #1e2335;
            --bg: #f6f5f2;
            --card: #ffffff;
            --text: #1f2328;
            --text-light: #6c757d;
            --border: #e3e6ea;
            --radius-lg: 20px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
            --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.12);
            --space-section: 80px;
            --space-md: 48px;
            --space-sm: 24px;
            --transition: all .25s ease;
        }
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { text-decoration: none; color: inherit; transition: var(--transition); }
        ul, ol { list-style: none; }
        ::selection { background: rgba(232, 163, 61, 0.25); }
        .container { max-width: 1200px; padding-left: 20px; padding-right: 20px; }
        .btn-main {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--primary) 0%, #f0b854 100%);
            color: #1a1408;
            border: none;
            border-radius: 10px;
            font-weight: 700;
            font-size: 15px;
            padding: 14px 30px;
            cursor: pointer;
            box-shadow: 0 4px 16px rgba(232, 163, 61, 0.35);
            transition: var(--transition);
        }
        .btn-main:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(232, 163, 61, 0.45);
            color: #1a1408;
        }
        .btn-main:focus-visible {
            outline: 3px solid rgba(232, 163, 61, 0.5);
            outline-offset: 2px;
        }
        .btn-accent {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            background: linear-gradient(135deg, var(--primary) 0%, #f0b854 100%);
            color: #1a1408 !important;
            border: none;
            border-radius: 10px;
            font-weight: 700;
            cursor: pointer;
            box-shadow: 0 3px 12px rgba(232, 163, 61, 0.3);
            transition: var(--transition);
            white-space: nowrap;
        }
        .btn-accent:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(232, 163, 61, 0.4);
        }
        .btn-accent:focus-visible {
            outline: 3px solid rgba(232, 163, 61, 0.5);
            outline-offset: 2px;
        }
        .btn-outline-light {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            border: 2px solid rgba(255, 255, 255, 0.6);
            color: #fff;
            border-radius: 10px;
            font-weight: 600;
            font-size: 15px;
            padding: 12px 28px;
            transition: var(--transition);
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
            color: #fff;
        }
        .site-header {
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(0, 0, 0, 0.06);
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 12px 0;
        }
        .site-header .container { display: flex; align-items: center; }
        .header-nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            gap: 20px;
        }
        .brand-logo, .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .brand-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary) 0%, #f0b854 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #1a1408;
            font-size: 16px;
            box-shadow: 0 3px 10px rgba(232, 163, 61, 0.3);
            flex-shrink: 0;
        }
        .brand-text {
            font-weight: 800;
            font-size: 20px;
            color: var(--text);
            letter-spacing: -0.02em;
            white-space: nowrap;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1;
            justify-content: center;
            margin-left: 10px;
        }
        .nav-link {
            font-weight: 600;
            font-size: 14px;
            color: var(--text);
            padding: 8px 16px;
            border-radius: 8px;
            transition: var(--transition);
        }
        .nav-link:hover {
            color: var(--primary-dark);
            background: rgba(232, 163, 61, 0.08);
        }
        .nav-link.active {
            color: var(--primary-dark);
            background: rgba(232, 163, 61, 0.12);
            font-weight: 700;
        }
        .nav-tools {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .search-box {
            display: flex;
            align-items: center;
            gap: 8px;
            background: #f1f2f4;
            border: 1px solid transparent;
            border-radius: 10px;
            padding: 8px 14px;
            min-width: 220px;
            transition: var(--transition);
        }
        .search-box:focus-within {
            border-color: rgba(232, 163, 61, 0.4);
            background: #fff;
            box-shadow: 0 0 0 3px rgba(232, 163, 61, 0.12);
        }
        .search-box i {
            color: #9ca3af;
            font-size: 13px;
        }
        .search-box input {
            border: none;
            background: transparent;
            outline: none;
            font-size: 13px;
            width: 100%;
            color: var(--text);
        }
        .search-box input::placeholder { color: #9ca3af; }
        .nav-toggle {
            display: none;
            background: transparent;
            border: 1px solid var(--border);
            border-radius: 8px;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            color: var(--text);
            font-size: 16px;
            transition: var(--transition);
        }
        .nav-toggle:hover {
            background: var(--bg);
            border-color: var(--primary);
        }
        .article-banner {
            position: relative;
            padding: 90px 0 80px;
            background: linear-gradient(135deg, rgba(20, 24, 38, 0.92) 0%, rgba(30, 35, 53, 0.85) 60%, rgba(20, 24, 38, 0.9) 100%),
                url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            color: #fff;
            border-bottom: 4px solid var(--primary);
            overflow: hidden;
        }
        .article-banner::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 420px;
            height: 420px;
            background: radial-gradient(circle, rgba(232, 163, 61, 0.18) 0%, transparent 70%);
            border-radius: 50%;
        }
        .breadcrumb-nav { margin-bottom: 32px; }
        .breadcrumb-nav .breadcrumb {
            background: transparent;
            padding: 0;
            margin: 0;
        }
        .breadcrumb-nav .breadcrumb-item {
            font-size: 14px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.6);
        }
        .breadcrumb-nav .breadcrumb-item a {
            color: rgba(255, 255, 255, 0.75);
            transition: var(--transition);
        }
        .breadcrumb-nav .breadcrumb-item a:hover { color: var(--primary-light); }
        .breadcrumb-nav .breadcrumb-item.active { color: rgba(255, 255, 255, 0.5); }
        .breadcrumb-nav .breadcrumb-item + .breadcrumb-item::before {
            content: '/';
            color: rgba(255, 255, 255, 0.35);
            padding: 0 8px;
        }
        .article-heading { position: relative; z-index: 2; }
        .article-category-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: linear-gradient(135deg, var(--primary) 0%, #f0b854 100%);
            color: #1a1408;
            font-weight: 700;
            font-size: 13px;
            padding: 6px 16px;
            border-radius: 30px;
            margin-bottom: 20px;
            box-shadow: 0 4px 14px rgba(232, 163, 61, 0.35);
        }
        .article-heading h1 {
            font-size: clamp(28px, 4.5vw, 44px);
            font-weight: 800;
            line-height: 1.25;
            color: #fff;
            margin-bottom: 22px;
            letter-spacing: -0.02em;
            max-width: 880px;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.75);
        }
        .article-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .article-meta i { color: var(--primary); }
        .info-metrics {
            margin-top: -38px;
            position: relative;
            z-index: 10;
        }
        .info-metrics .row { gap: 0; }
        .info-card {
            background: var(--card);
            border-radius: var(--radius-md);
            padding: 24px 28px;
            box-shadow: var(--shadow-md);
            border: 1px solid rgba(0, 0, 0, 0.04);
            margin-bottom: 20px;
            transition: var(--transition);
            height: 100%;
        }
        .info-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }
        .info-card .info-label {
            font-size: 13px;
            color: var(--text-light);
            font-weight: 500;
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .info-card .info-label i { color: var(--primary); }
        .info-card .info-value {
            font-size: 22px;
            font-weight: 800;
            color: var(--text);
            line-height: 1.3;
        }
        .info-card .info-sub {
            font-size: 12px;
            color: var(--text-light);
            margin-top: 4px;
        }
        .article-main { padding: 60px 0 0; }
        .article-content-wrap {
            background: var(--card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            border: 1px solid rgba(0, 0, 0, 0.04);
            padding: 50px 60px;
            margin-bottom: 40px;
        }
        .article-content {
            font-size: 16px;
            line-height: 1.8;
            color: #2d333a;
        }
        .article-content p {
            margin-bottom: 1.4em;
        }
        .article-content h2 {
            font-size: 24px;
            font-weight: 800;
            margin-top: 1.6em;
            margin-bottom: 0.8em;
            color: var(--text);
            position: relative;
            padding-left: 16px;
        }
        .article-content h2::before {
            content: '';
            position: absolute;
            left: 0;
            top: 2px;
            width: 4px;
            height: 26px;
            border-radius: 2px;
            background: linear-gradient(180deg, var(--primary), var(--primary-dark));
        }
        .article-content h3 {
            font-size: 20px;
            font-weight: 700;
            margin-top: 1.4em;
            margin-bottom: 0.7em;
            color: var(--text);
        }
        .article-content ul, .article-content ol {
            margin-bottom: 1.4em;
            padding-left: 1.4em;
        }
        .article-content ul li {
            list-style: disc;
            margin-bottom: 0.5em;
        }
        .article-content ol li {
            list-style: decimal;
            margin-bottom: 0.5em;
        }
        .article-content blockquote {
            border-left: 4px solid var(--primary);
            background: #faf8f5;
            padding: 16px 24px;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            margin: 1.6em 0;
            font-style: normal;
            color: #5a5f66;
        }
        .article-content blockquote p:last-child { margin-bottom: 0; }
        .article-content img {
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-md);
            margin: 1.6em auto;
        }
        .article-content a {
            color: var(--primary-dark);
            text-decoration: underline;
            text-underline-offset: 4px;
            text-decoration-color: rgba(233, 163, 61, 0.4);
        }
        .article-content a:hover { color: var(--primary-dark); text-decoration-color: var(--primary); }
        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin-bottom: 1.6em;
            font-size: 14px;
        }
        .article-content table th,
        .article-content table td {
            border: 1px solid var(--border);
            padding: 10px 14px;
            text-align: left;
        }
        .article-content table th {
            background: #fafafa;
            font-weight: 700;
        }
        .not-found {
            text-align: center;
            padding: 60px 20px;
        }
        .not-found i {
            font-size: 48px;
            color: var(--primary);
            margin-bottom: 20px;
            opacity: 0.6;
        }
        .not-found h2 {
            font-size: 28px;
            font-weight: 800;
            margin-bottom: 12px;
        }
        .not-found p {
            color: var(--text-light);
            margin-bottom: 28px;
        }
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 30px;
            padding-top: 24px;
            border-top: 1px solid var(--border);
        }
        .tag-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: #f1f2f4;
            border-radius: 30px;
            padding: 6px 16px;
            font-size: 13px;
            font-weight: 600;
            color: var(--text-light);
            transition: var(--transition);
        }
        .tag-item:hover {
            background: rgba(232, 163, 61, 0.1);
            color: var(--primary-dark);
        }
        .section-header {
            text-align: center;
            margin-bottom: 40px;
        }
        .section-header .section-tag {
            display: inline-block;
            background: rgba(232, 163, 61, 0.12);
            color: var(--primary-dark);
            font-size: 13px;
            font-weight: 700;
            padding: 5px 16px;
            border-radius: 30px;
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }
        .section-header h2 {
            font-size: 32px;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--text);
            margin-bottom: 8px;
        }
        .section-header p {
            color: var(--text-light);
            font-size: 15px;
            max-width: 600px;
            margin: 0 auto;
        }
        .related-card {
            background: var(--card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid rgba(0, 0, 0, 0.04);
            transition: var(--transition);
            text-align: left;
            margin-bottom: 24px;
        }
        .related-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-6px);
        }
        .related-card .card-img {
            overflow: hidden;
            aspect-ratio: 16/10;
        }
        .related-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .related-card:hover .card-img img {
            transform: scale(1.05);
        }
        .related-card .card-body {
            padding: 20px 22px 24px;
        }
        .related-card .card-cat {
            font-size: 12px;
            color: var(--primary-dark);
            font-weight: 700;
            margin-bottom: 6px;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .related-card .card-title {
            font-size: 16px;
            font-weight: 700;
            line-height: 1.4;
            margin-bottom: 10px;
            color: var(--text);
            transition: var(--transition);
        }
        .related-card:hover .card-title { color: var(--primary-dark); }
        .related-card .card-desc {
            font-size: 13px;
            color: var(--text-light);
            line-height: 1.6;
            margin-bottom: 14px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .card-more {
            font-size: 13px;
            font-weight: 700;
            color: var(--primary-dark);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .related-card .card-more i { transition: transform .25s ease; }
        .related-card:hover .card-more i { transform: translateX(4px); }
        .cta-banner {
            background: linear-gradient(135deg, var(--dark) 0%, var(--dark-2) 100%);
            border-radius: var(--radius-lg);
            padding: 56px 48px;
            color: #fff;
            position: relative;
            overflow: hidden;
            margin: 20px 0 80px;
        }
        .cta-banner::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -80px;
            width: 280px;
            height: 280px;
            background: radial-gradient(circle, rgba(232, 163, 61, 0.25) 0%, transparent 70%);
            border-radius: 50%;
        }
        .cta-banner::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: 30%;
            width: 180px;
            height: 180px;
            background: radial-gradient(circle, rgba(232, 163, 61, 0.15) 0%, transparent 70%);
            border-radius: 50%;
        }
        .cta-banner .cta-content { position: relative; z-index: 2; }
        .cta-banner h2 {
            font-size: 28px;
            font-weight: 800;
            margin-bottom: 12px;
            letter-spacing: -0.02em;
        }
        .cta-banner p {
            color: rgba(255, 255, 255, 0.75);
            font-size: 15px;
            margin-bottom: 0;
            max-width: 640px;
        }
        .cta-banner .btn-main { margin-top: 24px; }
        .site-footer {
            background: var(--dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 60px 0 0;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .site-footer .footer-brand .brand-text {
            color: #fff;
            font-size: 18px;
            font-weight: 800;
        }
        .site-footer .footer-desc {
            font-size: 14px;
            line-height: 1.7;
            margin-top: 16px;
            color: rgba(255, 255, 255, 0.55);
            max-width: 280px;
        }
        .site-footer .footer-col h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 10px;
        }
        .site-footer .footer-col h4::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 26px;
            height: 3px;
            border-radius: 2px;
            background: linear-gradient(90deg, var(--primary), var(--primary-dark));
        }
        .site-footer .footer-col ul li {
            margin-bottom: 10px;
        }
        .site-footer .footer-col ul li a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .site-footer .footer-col ul li a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }
        .site-footer .footer-contact li {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 12px;
        }
        .site-footer .footer-contact i {
            color: var(--primary);
            width: 16px;
            text-align: center;
        }
        .site-footer .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            padding: 20px 0;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-bottom span:last-child {
            font-size: 12px;
            letter-spacing: 0.02em;
        }
        .mobile-nav {
            display: none;
            background: #fff;
            border-top: 1px solid var(--border);
            padding: 12px 20px;
            box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.06);
        }
        .mobile-nav.show { display: block; }
        .mobile-nav .nav-link {
            display: block;
            padding: 12px 14px;
            font-size: 15px;
            border-radius: 8px;
        }
        @media (max-width: 1024px) {
            .nav-links { gap: 0; }
            .search-box { min-width: 160px; }
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .article-content-wrap { padding: 40px 36px; }
        }
        @media (max-width: 768px) {
            .site-header { padding: 10px 0; }
            .header-nav { flex-wrap: wrap; }
            .nav-links {
                order: 3;
                width: 100%;
                display: none;
                flex-direction: column;
                padding-top: 10px;
                border-top: 1px solid var(--border);
                margin-top: 10px;
            }
            .nav-links.show { display: flex; }
            .nav-tools { margin-left: auto; }
            .search-box { display: none; }
            .nav-toggle {
                display: flex;
                width: 38px;
                height: 38px;
            }
            .article-banner { padding: 60px 0 50px; }
            .article-heading h1 { font-size: 30px; }
            .info-metrics { margin-top: -20px; }
            .article-content-wrap { padding: 28px 20px; }
            .cta-banner { padding: 40px 24px; }
            .section-header h2 { font-size: 26px; }
        }
        @media (max-width: 520px) {
            .brand-text { font-size: 17px; }
            .brand-icon { width: 32px; height: 32px; font-size: 14px; }
            .article-banner { padding: 46px 0 42px; }
            .article-heading h1 { font-size: 24px; }
            .article-meta { flex-direction: column; gap: 8px; }
            .info-metrics { margin-top: 0; }
            .article-content-wrap { border-radius: var(--radius-md); padding: 24px 16px; }
            .site-footer .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .site-footer .footer-bottom { flex-direction: column; text-align: center; }
            .cta-banner { border-radius: 0; margin: 20px -20px 60px; padding: 36px 24px; }
        }

/* roulang page: category2 */
/* ========== 设计变量 ========== */
        :root {
            --primary: #4F46E5;
            --primary-dark: #3730A3;
            --primary-light: #EEF2FF;
            --secondary: #F59E0B;
            --secondary-dark: #D97706;
            --dark-bg: #0E0E1F;
            --light-bg: #F8F7FC;
            --card-bg: #FFFFFF;
            --text-main: #1E1B2E;
            --text-muted: #6B7280;
            --text-light: #A1A1AA;
            --border: #E5E7ED;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-lg: 24px;
            --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.05);
            --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.12);
            --transition: 0.3s ease;
            --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
        }

        /* ========== 基础 Reset ========== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        body {
            font-family: var(--font-main);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-main);
            background-color: var(--light-bg);
            margin: 0;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition);
        }
        img {
            max-width: 100%;
            display: block;
        }
        button,
        input {
            font-family: inherit;
        }
        p {
            margin: 0 0 16px;
        }
        h1,
        h2,
        h3,
        h4,
        h5 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--text-main);
        }

        /* ========== 容器 ========== */
        .container {
            max-width: 1280px;
            padding-left: 24px;
            padding-right: 24px;
            margin-left: auto;
            margin-right: auto;
        }

        /* ========== 通用 Section ========== */
        .section-padding {
            padding: 90px 0;
        }
        .section-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-light);
            padding: 6px 14px;
            border-radius: 999px;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
        }
        .section-title {
            font-size: 40px;
            font-weight: 800;
            letter-spacing: -0.5px;
            margin-bottom: 16px;
            color: var(--text-main);
        }
        .section-subtitle {
            font-size: 18px;
            color: var(--text-muted);
            max-width: 640px;
            margin-bottom: 40px;
        }
        @media (max-width: 768px) {
            .section-padding {
                padding: 60px 0;
            }
            .section-title {
                font-size: 28px;
            }
            .section-subtitle {
                font-size: 16px;
            }
        }

        /* ========== 导航 ========== */
        .site-header {
            background: #fff;
            border-bottom: 1px solid rgba(0, 0, 0, 0.06);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 1px 20px rgba(0, 0, 0, 0.03);
        }
        .header-nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 24px;
            flex-wrap: nowrap;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .brand-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 16px;
            box-shadow: 0 4px 15px rgba(79, 70, 229, 0.3);
        }
        .brand-text {
            font-size: 20px;
            font-weight: 800;
            color: var(--text-main);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
            margin: 0 auto;
        }
        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-muted);
            padding: 8px 16px;
            border-radius: 999px;
            transition: all var(--transition);
        }
        .nav-link:hover {
            color: var(--primary);
            background: var(--primary-light);
        }
        .nav-link.active {
            color: #fff;
            background: var(--primary);
            box-shadow: 0 4px 14px rgba(79, 70, 229, 0.3);
        }
        .nav-tools {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-shrink: 0;
        }
        .search-box {
            display: flex;
            align-items: center;
            background: var(--light-bg);
            border: 1px solid var(--border);
            border-radius: 999px;
            padding: 8px 16px;
            gap: 8px;
            width: 220px;
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .search-box:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
        }
        .search-box i {
            color: var(--text-muted);
            font-size: 13px;
        }
        .search-box input {
            border: none;
            outline: none;
            background: transparent;
            font-size: 14px;
            width: 100%;
            color: var(--text-main);
        }
        .search-box input::placeholder {
            color: var(--text-light);
        }
        .btn-accent {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            border: none;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 600;
            padding: 12px 24px;
            cursor: pointer;
            transition: all var(--transition);
            box-shadow: 0 4px 15px rgba(79, 70, 229, 0.3);
            white-space: nowrap;
        }
        .btn-accent:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(79, 70, 229, 0.4);
        }
        .btn-accent:active {
            transform: translateY(0);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
            border-radius: 999px;
            font-size: 14px;
            font-weight: 600;
            padding: 10px 22px;
            cursor: pointer;
            transition: all var(--transition);
        }
        .btn-outline:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            color: var(--text-main);
            cursor: pointer;
            padding: 6px;
        }
        @media (max-width: 992px) {
            .search-box {
                display: none;
            }
        }
        @media (max-width: 768px) {
            .header-nav {
                height: auto;
                padding: 12px 0;
                flex-wrap: wrap;
                gap: 12px;
            }
            .nav-links {
                display: none;
                flex-direction: column;
                width: 100%;
                gap: 4px;
                padding: 12px 0;
                border-top: 1px solid var(--border);
                order: 3;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-link {
                text-align: center;
                width: 100%;
                padding: 12px 20px;
            }
            .nav-tools {
                margin-left: auto;
            }
            .nav-toggle {
                display: block;
            }
            .brand-text {
                font-size: 17px;
            }
        }

        /* ========== Banner ========== */
        .page-banner {
            background: linear-gradient(135deg, rgba(14, 14, 31, 0.85), rgba(55, 48, 163, 0.75)), url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            padding: 110px 0 90px;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .page-banner::after {
            content: '';
            position: absolute;
            right: -100px;
            top: -100px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(245, 158, 11, 0.25), transparent 70%);
            border-radius: 50%;
        }
        .banner-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 24px;
        }
        .banner-breadcrumb a {
            color: rgba(255, 255, 255, 0.7);
        }
        .banner-breadcrumb a:hover {
            color: var(--secondary);
        }
        .banner-breadcrumb i {
            font-size: 12px;
        }
        .page-banner h1 {
            font-size: 48px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .page-banner .banner-desc {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 640px;
            line-height: 1.7;
            margin-bottom: 32px;
        }
        .banner-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .banner-actions .btn-accent {
            background: linear-gradient(135deg, var(--secondary), var(--secondary-dark));
            box-shadow: 0 4px 20px rgba(245, 158, 11, 0.4);
        }
        .banner-actions .btn-outline {
            border-color: rgba(255, 255, 255, 0.6);
            color: #fff;
        }
        .banner-actions .btn-outline:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        @media (max-width: 768px) {
            .page-banner {
                padding: 70px 0 50px;
            }
            .page-banner h1 {
                font-size: 30px;
            }
            .page-banner .banner-desc {
                font-size: 16px;
            }
        }

        /* ========== 分类卡片 ========== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .category-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 28px 22px;
            text-align: center;
            border: 1px solid var(--border);
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }
        .category-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            opacity: 0;
            transition: opacity var(--transition);
        }
        .category-card:hover::before {
            opacity: 1;
        }
        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: transparent;
        }
        .category-card .icon-wrap {
            width: 70px;
            height: 70px;
            border-radius: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            font-size: 26px;
        }
        .category-card:nth-child(1) .icon-wrap {
            background: rgba(79, 70, 229, 0.1);
            color: var(--primary);
        }
        .category-card:nth-child(2) .icon-wrap {
            background: rgba(245, 158, 11, 0.12);
            color: var(--secondary);
        }
        .category-card:nth-child(3) .icon-wrap {
            background: rgba(16, 185, 129, 0.1);
            color: #10B981;
        }
        .category-card:nth-child(4) .icon-wrap {
            background: rgba(236, 72, 153, 0.1);
            color: #EC4899;
        }
        .category-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .category-card p {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 0;
            line-height: 1.6;
        }
        @media (max-width: 992px) {
            .category-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .category-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ========== 热门玩法图文 ========== */
        .feature-detail {
            display: flex;
            flex-direction: row;
            align-items: center;
            gap: 48px;
            margin-bottom: 64px;
        }
        .feature-detail.reverse {
            flex-direction: row-reverse;
        }
        .feature-detail .feature-media {
            flex: 0 0 46%;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            position: relative;
        }
        .feature-media img {
            width: 100%;
            height: 300px;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .feature-detail:hover .feature-media img {
            transform: scale(1.03);
        }
        .feature-media .tag {
            position: absolute;
            top: 16px;
            left: 16px;
            background: rgba(14, 14, 31, 0.8);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 5px 12px;
            border-radius: 999px;
            backdrop-filter: blur(6px);
        }
        .feature-detail .feature-content {
            flex: 1;
        }
        .feature-content h3 {
            font-size: 26px;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .feature-content p {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.75;
            margin-bottom: 20px;
        }
        .feature-list {
            list-style: none;
            padding: 0;
            margin: 0 0 20px;
        }
        .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            padding: 6px 0;
            font-size: 15px;
            color: var(--text-main);
        }
        .feature-list li i {
            color: var(--primary);
            margin-top: 4px;
        }
        @media (max-width: 992px) {
            .feature-detail,
            .feature-detail.reverse {
                flex-direction: column;
                gap: 24px;
            }
            .feature-detail .feature-media {
                flex: 1 1 auto;
                width: 100%;
            }
            .feature-media img {
                height: 240px;
            }
        }
        @media (max-width: 520px) {
            .feature-content h3 {
                font-size: 22px;
            }
        }

        /* ========== 规则流程 ========== */
        .process-section {
            background: var(--dark-bg);
            position: relative;
            overflow: hidden;
        }
        .process-section::before {
            content: '';
            position: absolute;
            left: -100px;
            bottom: -100px;
            width: 320px;
            height: 320px;
            background: radial-gradient(circle, rgba(79, 70, 229, 0.2), transparent 70%);
        }
        .process-section .section-title {
            color: #fff;
        }
        .process-section .section-subtitle {
            color: rgba(255, 255, 255, 0.7);
        }
        .process-section .section-label {
            background: rgba(79, 70, 229, 0.2);
            color: #A5B4FC;
        }
        .process-grid {
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: 16px;
            margin-top: 40px;
            position: relative;
            z-index: 1;
        }
        .process-step {
            text-align: center;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius);
            padding: 24px 16px;
            transition: all var(--transition);
        }
        .process-step:hover {
            background: rgba(255, 255, 255, 0.09);
            transform: translateY(-5px);
        }
        .process-step .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            border-radius: 50%;
            color: #fff;
            font-weight: 700;
            font-size: 14px;
            margin-bottom: 14px;
        }
        .process-step h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 8px;
        }
        .process-step p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 0;
            line-height: 1.5;
        }
        @media (max-width: 992px) {
            .process-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }
        @media (max-width: 520px) {
            .process-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ========== 数据区块 ========== */
        .stats-section {
            background: linear-gradient(135deg, #1E1B4B, #0E0E1F);
            padding: 70px 0;
            position: relative;
        }
        .stats-section::before {
            content: '';
            position: absolute;
            right: 0;
            top: 0;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(245, 158, 11, 0.15), transparent 70%);
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
            z-index: 1;
        }
        .stat-card {
            text-align: center;
            padding: 36px 20px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius);
            transition: all var(--transition);
        }
        .stat-card:hover {
            background: rgba(255, 255, 255, 0.08);
            transform: translateY(-4px);
        }
        .stat-card .stat-icon {
            font-size: 28px;
            color: var(--secondary);
            margin-bottom: 16px;
        }
        .stat-card .stat-num {
            font-size: 42px;
            font-weight: 800;
            color: #fff;
            line-height: 1;
            margin-bottom: 8px;
            letter-spacing: -0.5px;
        }
        .stat-card .stat-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
        }
        @media (max-width: 992px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .stat-card .stat-num {
                font-size: 32px;
            }
        }

        /* ========== FAQ ========== */
        .faq-wrap {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            border: 1px solid var(--border);
            border-radius: var(--radius);
            margin-bottom: 16px;
            overflow: hidden;
            background: #fff;
            transition: box-shadow var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }
        .faq-item .faq-btn {
            width: 100%;
            text-align: left;
            padding: 20px 24px;
            background: none;
            border: none;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            gap: 16px;
        }
        .faq-item .faq-btn i {
            color: var(--primary);
            transition: transform var(--transition);
            font-size: 16px;
        }
        .faq-item .faq-btn[aria-expanded="true"] i {
            transform: rotate(180deg);
        }
        .faq-item .faq-body {
            padding: 0 24px 20px;
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.7;
        }
        .faq-item .faq-body-inner {
            border-top: 1px dashed var(--border);
            padding-top: 16px;
        }

        /* ========== CTA ========== */
        .cta-section {
            background: linear-gradient(135deg, rgba(14, 14, 31, 0.9), rgba(55, 48, 163, 0.8)), url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            padding: 100px 0;
            text-align: center;
            color: #fff;
        }
        .cta-section h2 {
            font-size: 40px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 20px;
        }
        .cta-section p {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.8);
            max-width: 560px;
            margin: 0 auto 36px;
        }
        .cta-section .btn-accent {
            background: linear-gradient(135deg, var(--secondary), var(--secondary-dark));
            box-shadow: 0 8px 30px rgba(245, 158, 11, 0.4);
            font-size: 16px;
            padding: 14px 36px;
        }
        .cta-section .btn-outline {
            border-color: rgba(255, 255, 255, 0.6);
            color: #fff;
            font-size: 16px;
            padding: 14px 36px;
        }
        .cta-section .btn-outline:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        @media (max-width: 768px) {
            .cta-section {
                padding: 60px 0;
            }
            .cta-section h2 {
                font-size: 28px;
            }
            .cta-section p {
                font-size: 16px;
            }
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: var(--dark-bg);
            color: rgba(255, 255, 255, 0.7);
            padding: 70px 0 30px;
            font-size: 14px;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 50px;
        }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }
        .footer-brand .brand-text {
            color: #fff;
        }
        .footer-desc {
            line-height: 1.7;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            max-width: 340px;
        }
        .site-footer h4 {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 20px;
        }
        .site-footer .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer .footer-col li {
            margin-bottom: 10px;
        }
        .site-footer .footer-col a {
            color: rgba(255, 255, 255, 0.65);
            transition: all var(--transition);
        }
        .site-footer .footer-col a:hover {
            color: var(--secondary);
            padding-left: 4px;
        }
        .footer-contact li {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 12px;
        }
        .footer-contact i {
            color: var(--secondary);
            width: 18px;
            text-align: center;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
        }
        @media (max-width: 992px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 520px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ========== Bootstrap 覆盖 ========== */
        .accordion-button {
            font-family: var(--font-main);
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            background: #fff;
            box-shadow: none;
            padding: 20px 24px;
            border: none;
        }
        .accordion-button:focus {
            box-shadow: none;
            border-color: var(--border);
        }
        .accordion-button:not(.collapsed) {
            background: #fff;
            color: var(--primary);
        }
        .accordion-button::after {
            background-image: none;
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            content: "\f078";
            color: var(--primary);
            transition: transform var(--transition);
        }
        .accordion-button:not(.collapsed)::after {
            transform: rotate(180deg);
        }
        .accordion-body {
            padding: 0 24px 20px;
            font-size: 15px;
            color: var(--text-muted);
            border-top: 1px dashed var(--border);
            background: #fff;
            line-height: 1.7;
        }

        /* ========== 响应式微调 ========== */
        @media (max-width: 576px) {
            .section-title {
                font-size: 26px;
            }
            .section-subtitle {
                font-size: 15px;
                margin-bottom: 28px;
            }
            .page-banner h1 {
                font-size: 26px;
            }
            .page-banner .banner-desc {
                font-size: 15px;
            }
            .banner-actions .btn-accent,
            .banner-actions .btn-outline {
                font-size: 13px;
                padding: 10px 18px;
            }
        }