/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0f1d2f;
            --primary-light: #1a2f4a;
            --primary-dark: #09131f;
            --secondary: #e85d26;
            --secondary-hover: #d04e1a;
            --secondary-light: #fdf0e8;
            --accent: #f5a623;
            --accent-light: #fef6e7;
            --bg: #f5f7fa;
            --bg-card: #ffffff;
            --bg-dark: #0a1420;
            --text: #1a1a2e;
            --text-light: #5a6a7a;
            --text-white: #ffffff;
            --border: #e2e8f0;
            --border-light: #f0f2f5;
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow: 0 4px 20px rgba(0,0,0,0.08);
            --shadow-lg: 0 8px 40px rgba(0,0,0,0.12);
            --shadow-hover: 0 12px 40px rgba(0,0,0,0.16);
            --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --font: 'PingFang SC','Microsoft YaHei','Helvetica Neue',Arial,sans-serif;
            --max-width: 1200px;
            --nav-height: 72px;
        }

        /* ===== 基础 Reset ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            overflow-x: hidden;
        }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        img { max-width: 100%; height: auto; display: block; }
        ul, ol { list-style: none; }
        button, input, textarea { font-family: inherit; font-size: inherit; outline: none; border: none; }
        button { cursor: pointer; background: none; }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container { padding: 0 16px; }
        }

        /* ===== 排版 ===== */
        .section-title {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.25;
            color: var(--primary);
            margin-bottom: 8px;
        }
        .section-subtitle {
            font-size: 17px;
            color: var(--text-light);
            margin-bottom: 40px;
            max-width: 600px;
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header .section-subtitle {
            margin-left: auto;
            margin-right: auto;
        }
        @media (max-width: 768px) {
            .section-title { font-size: 26px; }
            .section-subtitle { font-size: 15px; margin-bottom: 28px; }
            .section-header { margin-bottom: 32px; }
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 15px;
            transition: var(--transition);
            border: 2px solid transparent;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--secondary);
            color: #fff;
            border-color: var(--secondary);
        }
        .btn-primary:hover {
            background: var(--secondary-hover);
            border-color: var(--secondary-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(232,93,38,0.35);
        }
        .btn-primary:active { transform: translateY(0); }
        .btn-outline {
            background: transparent;
            color: #fff;
            border-color: rgba(255,255,255,0.6);
        }
        .btn-outline:hover {
            background: rgba(255,255,255,0.15);
            border-color: #fff;
            transform: translateY(-2px);
        }
        .btn-accent {
            background: var(--accent);
            color: var(--primary-dark);
            border-color: var(--accent);
        }
        .btn-accent:hover {
            background: #e8981a;
            border-color: #e8981a;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(245,166,35,0.35);
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: 13px;
            border-radius: 40px;
        }
        @media (max-width: 520px) {
            .btn { padding: 10px 22px; font-size: 14px; }
        }

        /* ===== 徽章 / 标签 ===== */
        .badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.3px;
            background: var(--secondary-light);
            color: var(--secondary);
        }
        .badge-accent {
            background: var(--accent-light);
            color: #b87a10;
        }
        .badge-primary {
            background: rgba(15,29,47,0.08);
            color: var(--primary);
        }
        .tag {
            display: inline-block;
            padding: 3px 12px;
            border-radius: 6px;
            font-size: 12px;
            font-weight: 500;
            background: var(--border);
            color: var(--text-light);
            transition: var(--transition);
        }
        .tag:hover {
            background: var(--secondary);
            color: #fff;
        }

        /* ===== 卡片 ===== */
        .card {
            background: var(--bg-card);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            overflow: hidden;
            transition: var(--transition);
        }
        .card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .card-img {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            display: block;
        }
        .card-body {
            padding: 20px 24px 24px;
        }
        .card-title {
            font-size: 18px;
            font-weight: 700;
            line-height: 1.4;
            margin-bottom: 8px;
            color: var(--primary);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .card-text {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--text-light);
            margin-top: 12px;
        }
        .card-meta i { font-size: 12px; }
        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            font-size: 14px;
            color: var(--secondary);
            margin-top: 14px;
            transition: var(--transition);
        }
        .card-link:hover { gap: 10px; color: var(--secondary-hover); }
        @media (max-width: 520px) {
            .card-body { padding: 16px 18px 20px; }
            .card-title { font-size: 16px; }
        }

        /* ===== 导航 ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: rgba(15,29,47,0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255,255,255,0.06);
            transition: var(--transition);
        }
        .header.scrolled {
            background: rgba(9,19,31,0.96);
            box-shadow: 0 4px 30px rgba(0,0,0,0.3);
        }
        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: #fff;
            letter-spacing: 0.5px;
        }
        .logo i {
            color: var(--secondary);
            font-size: 26px;
        }
        .logo span {
            background: linear-gradient(135deg, #fff 60%, var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-menu a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: 40px;
            font-size: 15px;
            font-weight: 500;
            color: rgba(255,255,255,0.75);
            transition: var(--transition);
            position: relative;
        }
        .nav-menu a:hover {
            color: #fff;
            background: rgba(255,255,255,0.08);
        }
        .nav-menu a.active {
            color: #fff;
            background: rgba(232,93,38,0.2);
        }
        .nav-menu a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--secondary);
            border-radius: 4px;
        }
        .nav-badge {
            font-size: 10px;
            padding: 1px 8px;
            border-radius: 30px;
            background: var(--accent);
            color: var(--primary-dark);
            font-weight: 700;
            margin-left: 2px;
        }
        .nav-cta .btn {
            padding: 8px 22px;
            font-size: 14px;
            margin-left: 6px;
        }
        .nav-toggle {
            display: none;
            font-size: 24px;
            color: #fff;
            padding: 6px;
            background: rgba(255,255,255,0.08);
            border-radius: 8px;
            width: 42px;
            height: 42px;
            align-items: center;
            justify-content: center;
        }
        @media (max-width: 768px) {
            .nav-toggle { display: flex; }
            .nav-menu {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(9,19,31,0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 20px 24px 32px;
                gap: 4px;
                transform: translateY(-110%);
                opacity: 0;
                transition: var(--transition);
                border-bottom: 1px solid rgba(255,255,255,0.06);
                box-shadow: 0 20px 40px rgba(0,0,0,0.4);
                pointer-events: none;
            }
            .nav-menu.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: all;
            }
            .nav-menu a {
                padding: 12px 16px;
                font-size: 16px;
                width: 100%;
                border-radius: 10px;
            }
            .nav-menu a.active::after { display: none; }
            .nav-cta { width: 100; margin-top: 8px; }
            .nav-cta .btn { width: 100%; justify-content: center; margin-left: 0; }
        }

        /* ===== Hero 首屏 ===== */
        .hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            padding-top: var(--nav-height);
            background: var(--bg-dark);
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.45;
            transform: scale(1.05);
            transition: transform 12s ease;
        }
        .hero:hover .hero-bg { transform: scale(1); }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(9,19,31,0.88) 0%, rgba(15,29,47,0.72) 50%, rgba(9,19,31,0.88) 100%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 820px;
            padding: 60px 0 80px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 18px;
            border-radius: 50px;
            background: rgba(232,93,38,0.2);
            color: var(--secondary);
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 24px;
            border: 1px solid rgba(232,93,38,0.15);
        }
        .hero-badge i { font-size: 12px; }
        .hero-title {
            font-size: 52px;
            font-weight: 800;
            line-height: 1.12;
            color: #fff;
            margin-bottom: 16px;
        }
        .hero-title .highlight {
            background: linear-gradient(135deg, var(--secondary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-desc {
            font-size: 19px;
            color: rgba(255,255,255,0.7);
            line-height: 1.7;
            max-width: 600px;
            margin-bottom: 32px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            align-items: center;
        }
        .hero-stats {
            display: flex;
            gap: 40px;
            margin-top: 48px;
            padding-top: 32px;
            border-top: 1px solid rgba(255,255,255,0.08);
        }
        .hero-stat-item .num {
            font-size: 32px;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }
        .hero-stat-item .num i {
            color: var(--accent);
            font-size: 20px;
            margin-left: 4px;
        }
        .hero-stat-item .label {
            font-size: 14px;
            color: rgba(255,255,255,0.5);
            margin-top: 2px;
        }
        @media (max-width: 768px) {
            .hero-title { font-size: 34px; }
            .hero-desc { font-size: 16px; }
            .hero-content { padding: 40px 0 60px; }
            .hero-stats { gap: 24px; flex-wrap: wrap; }
            .hero-stat-item .num { font-size: 26px; }
        }
        @media (max-width: 520px) {
            .hero-title { font-size: 28px; }
            .hero-desc { font-size: 15px; }
            .hero-actions { flex-direction: column; align-items: stretch; }
            .hero-actions .btn { justify-content: center; }
            .hero-stats { gap: 16px; }
        }

        /* ===== 板块通用 ===== */
        .section { padding: 80px 0; }
        .section-alt { background: var(--bg-card); }
        .section-dark {
            background: var(--bg-dark);
            color: #fff;
        }
        .section-dark .section-title { color: #fff; }
        .section-dark .section-subtitle { color: rgba(255,255,255,0.6); }
        @media (max-width: 768px) {
            .section { padding: 56px 0; }
        }

        /* ===== 关于板块 ===== */
        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }
        .about-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            aspect-ratio: 4 / 3;
            object-fit: cover;
            width: 100%;
        }
        .about-content h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 16px;
        }
        .about-content p {
            color: var(--text-light);
            margin-bottom: 16px;
            font-size: 16px;
            line-height: 1.8;
        }
        .about-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 12px;
            margin-top: 20px;
        }
        .about-features li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 15px;
            color: var(--text);
            padding: 8px 0;
        }
        .about-features li i {
            color: var(--secondary);
            font-size: 14px;
            width: 20px;
            text-align: center;
        }
        @media (max-width: 768px) {
            .about-grid { grid-template-columns: 1fr; gap: 32px; }
            .about-image { aspect-ratio: 16 / 10; }
            .about-features { grid-template-columns: 1fr; }
        }

        /* ===== 特色 / 分类卡片 ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .feature-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
            border: 1px solid var(--border-light);
        }
        .feature-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-6px);
        }
        .feature-card .card-img {
            aspect-ratio: 16 / 9;
        }
        .feature-card .card-body {
            padding: 20px 22px 24px;
        }
        .feature-card .card-body i {
            font-size: 28px;
            color: var(--secondary);
            margin-bottom: 12px;
        }
        .feature-card h4 {
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
        }
        .feature-card p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.7;
        }
        @media (max-width: 768px) {
            .features-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
        }
        @media (max-width: 520px) {
            .features-grid { grid-template-columns: 1fr; gap: 16px; }
        }

        /* ===== 资讯列表 ===== */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        .news-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .news-card .card-img-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 9;
        }
        .news-card .card-img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .news-card:hover .card-img { transform: scale(1.05); }
        .news-card .card-category {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 4px 14px;
            border-radius: 30px;
            font-size: 12px;
            font-weight: 600;
            background: var(--secondary);
            color: #fff;
        }
        .news-card .card-body {
            padding: 18px 22px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .news-card .card-title {
            font-size: 17px;
            -webkit-line-clamp: 2;
        }
        .news-card .card-text {
            font-size: 14px;
            -webkit-line-clamp: 2;
            margin-bottom: 8px;
        }
        .news-card .card-meta {
            margin-top: auto;
            font-size: 12px;
        }
        .news-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 48px 24px;
            color: var(--text-light);
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px dashed var(--border);
        }
        .news-empty i {
            font-size: 40px;
            color: var(--border);
            margin-bottom: 12px;
        }
        @media (max-width: 768px) {
            .news-grid { grid-template-columns: 1fr; gap: 20px; }
        }

        /* ===== 数据统计 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
            text-align: center;
        }
        .stat-card {
            padding: 36px 20px;
            background: rgba(255,255,255,0.04);
            border-radius: var(--radius);
            border: 1px solid rgba(255,255,255,0.06);
            transition: var(--transition);
        }
        .stat-card:hover {
            background: rgba(255,255,255,0.08);
            transform: translateY(-4px);
        }
        .stat-card .icon {
            font-size: 32px;
            color: var(--accent);
            margin-bottom: 12px;
        }
        .stat-card .num {
            font-size: 40px;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }
        .stat-card .num i { font-size: 18px; color: var(--accent); }
        .stat-card .label {
            font-size: 15px;
            color: rgba(255,255,255,0.55);
            margin-top: 6px;
        }
        @media (max-width: 768px) {
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
            .stat-card .num { font-size: 30px; }
        }
        @media (max-width: 520px) {
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
            .stat-card { padding: 24px 16px; }
        }

        /* ===== 流程步骤 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
            counter-reset: step;
        }
        .step-card {
            text-align: center;
            padding: 32px 24px;
            background: var(--bg-card);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            transition: var(--transition);
            position: relative;
        }
        .step-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .step-number {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: var(--secondary);
            color: #fff;
            font-size: 22px;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            box-shadow: 0 4px 16px rgba(232,93,38,0.25);
        }
        .step-card h4 {
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
        }
        .step-card p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.7;
        }
        @media (max-width: 768px) {
            .steps-grid { grid-template-columns: 1fr; gap: 20px; }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--primary);
            cursor: pointer;
            transition: var(--transition);
            width: 100%;
            text-align: left;
            background: none;
            border: none;
        }
        .faq-question:hover { color: var(--secondary); }
        .faq-question i {
            font-size: 14px;
            color: var(--text-light);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
            color: var(--secondary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 24px;
            color: var(--text-light);
            font-size: 15px;
            line-height: 1.7;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }
        @media (max-width: 520px) {
            .faq-question { padding: 14px 18px; font-size: 15px; }
            .faq-answer { font-size: 14px; }
            .faq-item.active .faq-answer { padding: 0 18px 16px; }
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.08;
        }
        .cta-content {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 680px;
            margin: 0 auto;
            padding: 20px 0;
        }
        .cta-content h2 {
            font-size: 36px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-content p {
            font-size: 17px;
            color: rgba(255,255,255,0.7);
            margin-bottom: 28px;
        }
        .cta-actions {
            display: flex;
            justify-content: center;
            gap: 14px;
            flex-wrap: wrap;
        }
        @media (max-width: 520px) {
            .cta-content h2 { font-size: 26px; }
            .cta-content p { font-size: 15px; }
            .cta-actions { flex-direction: column; align-items: stretch; }
            .cta-actions .btn { justify-content: center; }
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--primary-dark);
            color: rgba(255,255,255,0.7);
            padding: 48px 0 32px;
            border-top: 1px solid rgba(255,255,255,0.04);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-brand .logo {
            font-size: 20px;
            margin-bottom: 12px;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255,255,255,0.5);
            max-width: 300px;
        }
        .footer-col h5 {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-col a {
            display: block;
            font-size: 14px;
            color: rgba(255,255,255,0.55);
            padding: 6px 0;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: var(--secondary);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.05);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(255,255,255,0.35);
        }
        .footer-bottom a {
            color: rgba(255,255,255,0.45);
        }
        .footer-bottom a:hover { color: var(--secondary); }
        @media (max-width: 768px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
            .footer-brand { grid-column: 1 / -1; }
        }
        @media (max-width: 520px) {
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }

        /* ===== 响应式辅助 ===== */
        @media (max-width: 1024px) {
            .features-grid { gap: 20px; }
            .about-grid { gap: 40px; }
        }
        @media (max-width: 520px) {
            .section { padding: 40px 0; }
            .container { padding: 0 14px; }
        }

/* roulang page: article */
:root {
    --primary: #0b1120;
    --primary-light: #1a2a4a;
    --secondary: #1e3a5f;
    --accent: #f59e0b;
    --accent-hover: #d97706;
    --accent-red: #ef4444;
    --bg: #f1f5f9;
    --bg-dark: #0b1120;
    --card-bg: #ffffff;
    --text: #1e293b;
    --text-light: #64748b;
    --text-white: #f8fafc;
    --border: #e2e8f0;
    --border-light: #f1f5f9;
    --radius: 16px;
    --radius-sm: 10px;
    --radius-xs: 6px;
    --shadow: 0 4px 20px rgba(0,0,0,0.06);
    --shadow-lg: 0 12px 40px rgba(0,0,0,0.10);
    --shadow-hover: 0 12px 32px rgba(0,0,0,0.12);
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    --max-width: 1200px;
    --content-width: 880px;
    --header-h: 72px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font);
    font-size: 16px;
    line-height: 1.7;
    color: var(--text);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent-hover); }
button { cursor: pointer; font-family: inherit; border: none; background: none; }
input, textarea { font-family: inherit; font-size: 1rem; }
ul, ol { list-style: none; }

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}
.content-container {
    max-width: var(--content-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* Header & Nav */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(11,17,32,0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(255,255,255,0.06);
    height: var(--header-h);
    transition: background var(--transition);
}
.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}
.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-white);
    font-weight: 700;
    font-size: 1.4rem;
    letter-spacing: -0.02em;
    transition: opacity var(--transition);
}
.logo:hover { opacity: 0.9; color: var(--text-white); }
.logo i { color: var(--accent); font-size: 1.6rem; }
.logo span { background: linear-gradient(135deg, #f8fafc 60%, var(--accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }

.nav-menu {
    display: flex;
    align-items: center;
    gap: 8px;
}
.nav-menu a {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 18px;
    border-radius: var(--radius-xs);
    color: rgba(255,255,255,0.75);
    font-size: 0.92rem;
    font-weight: 500;
    transition: all var(--transition);
    position: relative;
}
.nav-menu a i { font-size: 0.85rem; }
.nav-menu a:hover { color: var(--text-white); background: rgba(255,255,255,0.08); }
.nav-menu a.active { color: var(--text-white); background: rgba(245,158,11,0.15); }
.nav-menu a.active::after { content: ''; position: absolute; bottom: 0; left: 50%; transform: translateX(-50%); width: 20px; height: 3px; background: var(--accent); border-radius: 2px; }
.nav-badge {
    display: inline-block;
    background: var(--accent-red);
    color: #fff;
    font-size: 0.65rem;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: 20px;
    letter-spacing: 0.02em;
    margin-left: 2px;
}
.nav-cta { margin-left: 12px; }
.nav-toggle { display: none; color: var(--text-white); font-size: 1.5rem; padding: 6px; }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.95rem;
    transition: all var(--transition);
    border: none;
    cursor: pointer;
    text-align: center;
}
.btn-primary {
    background: linear-gradient(135deg, var(--accent), #d97706);
    color: #0b1120 !important;
    box-shadow: 0 4px 14px rgba(245,158,11,0.30);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(245,158,11,0.40); color: #0b1120 !important; }
.btn-sm { padding: 8px 18px; font-size: 0.85rem; border-radius: var(--radius-xs); }
.btn-outline {
    background: transparent;
    border: 2px solid var(--accent);
    color: var(--accent) !important;
}
.btn-outline:hover { background: var(--accent); color: #0b1120 !important; transform: translateY(-2px); }
.btn-ghost { background: rgba(255,255,255,0.08); color: var(--text-white) !important; }
.btn-ghost:hover { background: rgba(255,255,255,0.16); transform: translateY(-2px); }
.btn:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }

/* Page Hero */
.page-hero {
    padding: calc(var(--header-h) + 40px) 0 48px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 50%, var(--secondary) 100%);
    position: relative;
    overflow: hidden;
}
.page-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
    opacity: 0.12;
    pointer-events: none;
}
.page-hero .content-container { position: relative; z-index: 2; }
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    color: rgba(255,255,255,0.55);
    margin-bottom: 20px;
    flex-wrap: wrap;
}
.breadcrumb a { color: rgba(255,255,255,0.7); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb span { color: rgba(255,255,255,0.4); }
.article-meta-category {
    display: inline-block;
    background: rgba(245,158,11,0.2);
    color: var(--accent);
    padding: 4px 14px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 16px;
    border: 1px solid rgba(245,158,11,0.25);
}
.page-hero h1 {
    font-size: 2.6rem;
    font-weight: 800;
    color: var(--text-white);
    line-height: 1.25;
    letter-spacing: -0.02em;
    margin-bottom: 16px;
    max-width: 860px;
}
.article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    font-size: 0.88rem;
    color: rgba(255,255,255,0.6);
    margin-top: 8px;
}
.article-meta i { margin-right: 6px; color: var(--accent); }
.article-meta span { display: inline-flex; align-items: center; }

/* Article Cover */
.article-cover-wrap {
    margin-top: 32px;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    max-height: 480px;
    background: var(--primary-light);
}
.article-cover-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

/* Main Content */
.article-main {
    padding: 48px 0 32px;
}
.article-body {
    background: var(--card-bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 48px;
    font-size: 1.05rem;
    line-height: 1.85;
    color: var(--text);
}
.article-body h2, .article-body h3, .article-body h4 {
    margin-top: 32px;
    margin-bottom: 16px;
    font-weight: 700;
    color: var(--primary);
    line-height: 1.3;
}
.article-body h2 { font-size: 1.6rem; }
.article-body h3 { font-size: 1.3rem; }
.article-body p { margin-bottom: 20px; }
.article-body ul, .article-body ol { margin-bottom: 20px; padding-left: 24px; }
.article-body ul { list-style: disc; }
.article-body ol { list-style: decimal; }
.article-body li { margin-bottom: 8px; }
.article-body blockquote {
    border-left: 4px solid var(--accent);
    padding: 16px 24px;
    margin: 24px 0;
    background: rgba(245,158,11,0.06);
    border-radius: 0 var(--radius-xs) var(--radius-xs) 0;
    font-style: italic;
    color: var(--text-light);
}
.article-body img {
    border-radius: var(--radius-sm);
    margin: 24px auto;
    box-shadow: var(--shadow);
}
.article-body a { color: var(--accent); text-decoration: underline; }
.article-body a:hover { color: var(--accent-hover); }

/* Article Tags */
.article-tags {
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
}
.article-tags .tag-label { font-size: 0.9rem; font-weight: 600; color: var(--text-light); }
.tag {
    display: inline-block;
    padding: 5px 14px;
    border-radius: 20px;
    background: var(--bg);
    color: var(--text-light);
    font-size: 0.82rem;
    font-weight: 500;
    transition: all var(--transition);
    border: 1px solid var(--border);
}
.tag:hover { background: var(--accent); color: #0b1120; border-color: var(--accent); }

/* Article Share */
.article-share {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 14px;
}
.article-share span { font-size: 0.9rem; font-weight: 600; color: var(--text-light); }
.share-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--bg);
    color: var(--text-light);
    font-size: 1rem;
    transition: all var(--transition);
    border: 1px solid var(--border);
}
.share-btn:hover { background: var(--accent); color: #0b1120; border-color: var(--accent); transform: translateY(-2px); }

/* Article Navigation (prev/next) */
.article-nav {
    margin-top: 40px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}
.article-nav a {
    display: flex;
    flex-direction: column;
    padding: 20px 24px;
    border-radius: var(--radius-sm);
    background: var(--card-bg);
    border: 1px solid var(--border);
    transition: all var(--transition);
    box-shadow: var(--shadow);
}
.article-nav a:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); border-color: var(--accent); }
.article-nav .nav-label { font-size: 0.78rem; color: var(--text-light); margin-bottom: 6px; }
.article-nav .nav-title { font-size: 0.95rem; font-weight: 600; color: var(--text); line-height: 1.4; }
.article-nav a:hover .nav-title { color: var(--accent); }
.article-nav .nav-next { text-align: right; }

/* Not Found */
.not-found-box {
    text-align: center;
    padding: 80px 24px;
    background: var(--card-bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}
.not-found-box i { font-size: 3rem; color: var(--text-light); margin-bottom: 16px; }
.not-found-box h2 { font-size: 1.6rem; color: var(--text); margin-bottom: 12px; }
.not-found-box p { color: var(--text-light); margin-bottom: 24px; }

/* Related Section */
.related-section {
    padding: 56px 0;
    background: var(--bg);
}
.related-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 32px;
    flex-wrap: wrap;
    gap: 12px;
}
.related-header h2 {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--primary);
}
.related-header h2 i { color: var(--accent); margin-right: 8px; }
.related-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.related-card {
    background: var(--card-bg);
    border-radius: var(--radius-sm);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all var(--transition);
    border: 1px solid var(--border);
}
.related-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); border-color: var(--accent); }
.related-card .card-img {
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: var(--border-light);
}
.related-card .card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}
.related-card:hover .card-img img { transform: scale(1.06); }
.related-card .card-body {
    padding: 18px 20px 20px;
}
.related-card .card-category {
    display: inline-block;
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--accent);
    background: rgba(245,158,11,0.10);
    padding: 2px 10px;
    border-radius: 12px;
    margin-bottom: 8px;
}
.related-card .card-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: color var(--transition);
}
.related-card:hover .card-title { color: var(--accent); }
.related-card .card-date {
    font-size: 0.78rem;
    color: var(--text-light);
    margin-top: 8px;
}

/* CTA Section */
.cta-section {
    padding: 64px 0;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    position: relative;
    overflow: hidden;
}
.cta-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
    opacity: 0.08;
    pointer-events: none;
}
.cta-section .content-container { position: relative; z-index: 2; text-align: center; }
.cta-section h2 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: 12px;
}
.cta-section p {
    color: rgba(255,255,255,0.7);
    max-width: 600px;
    margin: 0 auto 28px;
    font-size: 1.05rem;
}
.cta-section .btn-group { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }

/* Footer */
.footer {
    background: var(--primary);
    color: rgba(255,255,255,0.7);
    padding: 56px 0 0;
    border-top: 1px solid rgba(255,255,255,0.05);
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255,255,255,0.06);
}
.footer-brand .logo { margin-bottom: 14px; }
.footer-brand p { font-size: 0.88rem; line-height: 1.7; color: rgba(255,255,255,0.55); max-width: 360px; }
.footer-col h5 {
    color: var(--text-white);
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 16px;
    letter-spacing: 0.02em;
}
.footer-col a {
    display: block;
    color: rgba(255,255,255,0.5);
    font-size: 0.85rem;
    padding: 5px 0;
    transition: all var(--transition);
}
.footer-col a:hover { color: var(--accent); padding-left: 4px; }
.footer-col a i { width: 20px; }
.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    padding: 24px 0;
    font-size: 0.82rem;
    color: rgba(255,255,255,0.35);
}
.footer-bottom a { color: rgba(255,255,255,0.45); }
.footer-bottom a:hover { color: var(--accent); }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .related-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .page-hero h1 { font-size: 2.2rem; }
}
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: var(--header-h);
        left: 0;
        right: 0;
        background: rgba(11,17,32,0.98);
        backdrop-filter: blur(16px);
        flex-direction: column;
        padding: 16px 24px 24px;
        gap: 6px;
        transform: translateY(-120%);
        opacity: 0;
        transition: all 0.4s cubic-bezier(0.4,0,0.2,1);
        pointer-events: none;
        border-bottom: 1px solid rgba(255,255,255,0.06);
        max-height: calc(100vh - var(--header-h));
        overflow-y: auto;
    }
    .nav-menu.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
    .nav-menu a { padding: 12px 18px; width: 100%; border-radius: var(--radius-xs); }
    .nav-menu a.active::after { display: none; }
    .nav-cta { margin-left: 0; width: 100%; margin-top: 8px; }
    .nav-cta .btn { width: 100%; justify-content: center; }
    .nav-toggle { display: block; }
    .page-hero { padding: calc(var(--header-h) + 24px) 0 32px; }
    .page-hero h1 { font-size: 1.7rem; }
    .article-body { padding: 28px 20px; font-size: 1rem; }
    .article-nav { grid-template-columns: 1fr; gap: 12px; }
    .related-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: 28px; }
    .footer-bottom { flex-direction: column; text-align: center; }
    .cta-section h2 { font-size: 1.5rem; }
    .article-cover-wrap { margin-top: 20px; max-height: 280px; }
    .article-meta { gap: 12px; font-size: 0.82rem; }
}
@media (max-width: 520px) {
    .container { padding: 0 16px; }
    .content-container { padding: 0 16px; }
    .page-hero h1 { font-size: 1.4rem; }
    .article-body { padding: 20px 16px; font-size: 0.95rem; }
    .article-body h2 { font-size: 1.3rem; }
    .related-card .card-body { padding: 14px 16px 16px; }
    .cta-section h2 { font-size: 1.3rem; }
    .cta-section p { font-size: 0.95rem; }
    .btn { padding: 10px 20px; font-size: 0.88rem; }
    .article-share { flex-wrap: wrap; }
}

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #ff6b6b;
            --secondary: #1d3557;
            --secondary-light: #2a4a7f;
            --accent: #f4a261;
            --bg: #f8f9fa;
            --bg-card: #ffffff;
            --bg-dark: #1a1a2e;
            --bg-section: #f0f2f5;
            --text: #1d1d1f;
            --text-light: #6c757d;
            --text-white: #ffffff;
            --border: #e0e0e0;
            --border-light: #f0f0f0;
            --radius: 16px;
            --radius-sm: 8px;
            --radius-lg: 24px;
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.12);
            --shadow-nav: 0 2px 16px rgba(0, 0, 0, 0.08);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            --container: 1200px;
            --header-h: 72px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.6;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-top: var(--header-h);
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--text);
        }
        p {
            margin-bottom: 1rem;
            color: var(--text-light);
        }
        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header / Nav ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: var(--header-h);
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-light);
            z-index: 1000;
            box-shadow: var(--shadow-nav);
        }
        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text);
            letter-spacing: -0.5px;
        }
        .logo i {
            color: var(--primary);
            font-size: 1.6rem;
        }
        .logo span {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .logo:hover span {
            -webkit-text-fill-color: var(--primary-dark);
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-menu a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-light);
            transition: var(--transition);
            position: relative;
        }
        .nav-menu a i {
            font-size: 0.9rem;
        }
        .nav-menu a:hover {
            color: var(--primary);
            background: rgba(230, 57, 70, 0.06);
        }
        .nav-menu a.active {
            color: var(--primary);
            background: rgba(230, 57, 70, 0.10);
            font-weight: 600;
        }
        .nav-menu a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 24px;
            height: 3px;
            background: var(--primary);
            border-radius: 3px;
        }
        .nav-badge {
            display: inline-block;
            background: var(--primary);
            color: #fff;
            font-size: 0.65rem;
            font-weight: 700;
            padding: 2px 8px;
            border-radius: 20px;
            line-height: 1.4;
            letter-spacing: 0.3px;
        }
        .nav-cta {
            margin-left: 12px;
        }
        .nav-cta .btn {
            padding: 8px 20px;
            font-size: 0.85rem;
            border-radius: 50px;
        }
        .nav-toggle {
            display: none;
            background: none;
            font-size: 1.5rem;
            color: var(--text);
            cursor: pointer;
            padding: 4px 8px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .nav-toggle:hover {
            background: rgba(0, 0, 0, 0.04);
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: var(--transition);
            border: 2px solid transparent;
            text-align: center;
            justify-content: center;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(230, 57, 70, 0.35);
        }
        .btn-secondary {
            background: transparent;
            color: var(--text);
            border-color: var(--border);
        }
        .btn-secondary:hover {
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-2px);
        }
        .btn-outline-light {
            background: transparent;
            color: #fff;
            border-color: rgba(255, 255, 255, 0.6);
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: 0.8rem;
        }
        .btn-lg {
            padding: 16px 36px;
            font-size: 1.05rem;
        }
        .btn:focus-visible {
            outline: 3px solid var(--primary-light);
            outline-offset: 2px;
        }

        /* ===== Hero / Banner ===== */
        .page-hero {
            position: relative;
            padding: 80px 0 60px;
            background: var(--bg-dark);
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            color: var(--text-white);
            overflow: hidden;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 26, 46, 0.88) 0%, rgba(26, 26, 46, 0.60) 100%);
            z-index: 1;
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
        }
        .page-hero-breadcrumb {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 20px;
        }
        .page-hero-breadcrumb a {
            color: rgba(255, 255, 255, 0.8);
            transition: var(--transition);
        }
        .page-hero-breadcrumb a:hover {
            color: #fff;
        }
        .page-hero-breadcrumb .sep {
            color: rgba(255, 255, 255, 0.4);
        }
        .page-hero h1 {
            font-size: 3rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: -1px;
            line-height: 1.2;
        }
        .page-hero h1 i {
            color: var(--primary-light);
            margin-right: 12px;
        }
        .page-hero p {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.8);
            max-width: 680px;
            margin-bottom: 28px;
        }
        .page-hero-stats {
            display: flex;
            gap: 40px;
            flex-wrap: wrap;
            margin-top: 12px;
        }
        .page-hero-stats .stat-item {
            display: flex;
            flex-direction: column;
        }
        .page-hero-stats .stat-number {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }
        .page-hero-stats .stat-label {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.7);
        }

        /* ===== Section ===== */
        .section {
            padding: 70px 0;
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header h2 {
            font-size: 2.2rem;
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }
        .section-header h2 i {
            color: var(--primary);
            margin-right: 10px;
        }
        .section-header p {
            font-size: 1.05rem;
            color: var(--text-light);
            max-width: 600px;
            margin: 0 auto;
        }
        .section-header .badge-group {
            display: flex;
            justify-content: center;
            gap: 12px;
            flex-wrap: wrap;
            margin-top: 16px;
        }
        .section.bg-light {
            background: var(--bg-section);
        }
        .section.bg-white {
            background: #fff;
        }

        /* ===== Cards ===== */
        .card {
            background: var(--bg-card);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            overflow: hidden;
            transition: var(--transition);
            border: 1px solid var(--border-light);
        }
        .card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .card-img {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 9;
            background: #e9ecef;
        }
        .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .card:hover .card-img img {
            transform: scale(1.05);
        }
        .card-img .card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--primary);
            color: #fff;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.3px;
        }
        .card-img .card-date {
            position: absolute;
            bottom: 12px;
            right: 12px;
            background: rgba(0, 0, 0, 0.6);
            color: #fff;
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 0.75rem;
            backdrop-filter: blur(4px);
        }
        .card-body {
            padding: 20px 22px 22px;
        }
        .card-body h3 {
            font-size: 1.15rem;
            font-weight: 600;
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .card-body h3 a {
            color: var(--text);
        }
        .card-body h3 a:hover {
            color: var(--primary);
        }
        .card-body p {
            font-size: 0.9rem;
            color: var(--text-light);
            margin-bottom: 12px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.8rem;
            color: var(--text-light);
            padding-top: 12px;
            border-top: 1px solid var(--border-light);
        }
        .card-meta i {
            margin-right: 4px;
        }
        .card-meta span {
            display: flex;
            align-items: center;
        }

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

        /* ===== Badge / Tag ===== */
        .badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 600;
            background: rgba(230, 57, 70, 0.10);
            color: var(--primary);
            transition: var(--transition);
        }
        .badge:hover {
            background: var(--primary);
            color: #fff;
        }
        .badge-sm {
            padding: 2px 10px;
            font-size: 0.7rem;
        }
        .badge-outline {
            background: transparent;
            border: 1.5px solid var(--border);
            color: var(--text-light);
        }
        .badge-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: transparent;
        }
        .tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        /* ===== Featured Post ===== */
        .featured-card {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 0;
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .featured-card:hover {
            box-shadow: var(--shadow-hover);
        }
        .featured-card .featured-img {
            aspect-ratio: 4 / 3;
            overflow: hidden;
            background: #e9ecef;
        }
        .featured-card .featured-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .featured-card:hover .featured-img img {
            transform: scale(1.04);
        }
        .featured-card .featured-body {
            padding: 40px 44px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .featured-card .featured-body .badge {
            margin-bottom: 12px;
            align-self: flex-start;
        }
        .featured-card .featured-body h2 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 14px;
            line-height: 1.3;
        }
        .featured-card .featured-body h2 a {
            color: var(--text);
        }
        .featured-card .featured-body h2 a:hover {
            color: var(--primary);
        }
        .featured-card .featured-body p {
            font-size: 1rem;
            color: var(--text-light);
            margin-bottom: 20px;
        }
        .featured-card .featured-meta {
            display: flex;
            gap: 20px;
            font-size: 0.85rem;
            color: var(--text-light);
        }
        .featured-card .featured-meta i {
            margin-right: 6px;
        }

        /* ===== List / Timeline ===== */
        .list-group {
            display: flex;
            flex-direction: column;
            gap: 0;
            background: #fff;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
        }
        .list-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 18px 22px;
            border-bottom: 1px solid var(--border-light);
            transition: var(--transition);
            cursor: pointer;
        }
        .list-item:last-child {
            border-bottom: none;
        }
        .list-item:hover {
            background: rgba(230, 57, 70, 0.03);
        }
        .list-item .list-index {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--bg-section);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.9rem;
            color: var(--text-light);
            flex-shrink: 0;
        }
        .list-item:nth-child(1) .list-index {
            background: var(--primary);
            color: #fff;
        }
        .list-item:nth-child(2) .list-index {
            background: var(--accent);
            color: #fff;
        }
        .list-item:nth-child(3) .list-index {
            background: var(--secondary);
            color: #fff;
        }
        .list-item .list-content {
            flex: 1;
        }
        .list-item .list-content h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 2px;
        }
        .list-item .list-content h4 a {
            color: var(--text);
        }
        .list-item .list-content h4 a:hover {
            color: var(--primary);
        }
        .list-item .list-content span {
            font-size: 0.8rem;
            color: var(--text-light);
        }
        .list-item .list-badge {
            font-size: 0.75rem;
            padding: 4px 12px;
            border-radius: 20px;
            background: rgba(230, 57, 70, 0.08);
            color: var(--primary);
            font-weight: 600;
            flex-shrink: 0;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--bg-dark);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            padding: 80px 0;
            text-align: center;
            position: relative;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 26, 46, 0.85) 0%, rgba(26, 26, 46, 0.70) 100%);
            z-index: 1;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-size: 2.4rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .cta-section p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.8);
            max-width: 600px;
            margin: 0 auto 32px;
        }
        .cta-section .btn-group {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: var(--transition);
            box-shadow: var(--shadow);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-hover);
        }
        .faq-question {
            padding: 18px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text);
            transition: var(--transition);
            background: none;
            width: 100%;
            text-align: left;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question i {
            color: var(--primary);
            transition: var(--transition);
            font-size: 1.2rem;
        }
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 24px 18px;
            font-size: 0.95rem;
            color: var(--text-light);
            line-height: 1.7;
            display: none;
        }
        .faq-item.active .faq-answer {
            display: block;
        }

        /* ===== Pagination ===== */
        .pagination {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 8px;
            margin-top: 48px;
        }
        .pagination a,
        .pagination span {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: 50%;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-light);
            background: #fff;
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .pagination a:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(230, 57, 70, 0.04);
        }
        .pagination .active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .pagination .next,
        .pagination .prev {
            width: auto;
            padding: 0 18px;
            border-radius: 50px;
            gap: 6px;
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.85);
            padding: 60px 0 30px;
        }
        .footer .logo {
            color: #fff;
            margin-bottom: 16px;
        }
        .footer .logo span {
            background: linear-gradient(135deg, var(--primary-light), var(--primary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .footer p {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            margin-bottom: 0;
            max-width: 360px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            margin-bottom: 30px;
        }
        .footer-col h5 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            padding: 4px 0;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }
        .footer-col a i {
            width: 20px;
            margin-right: 6px;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.6);
        }
        .footer-bottom a:hover {
            color: var(--primary-light);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .page-hero h1 {
                font-size: 2.4rem;
            }
            .featured-card .featured-body {
                padding: 28px 32px;
            }
            .featured-card .featured-body h2 {
                font-size: 1.5rem;
            }
        }

        @media (max-width: 768px) {
            :root {
                --header-h: 60px;
            }
            .nav-menu {
                display: none;
                position: absolute;
                top: var(--header-h);
                left: 0;
                width: 100%;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 16px 24px 24px;
                box-shadow: var(--shadow-nav);
                border-bottom: 1px solid var(--border-light);
                gap: 4px;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu a {
                padding: 12px 16px;
                width: 100%;
                border-radius: var(--radius-sm);
            }
            .nav-menu a.active::after {
                display: none;
            }
            .nav-menu a.active {
                background: rgba(230, 57, 70, 0.08);
            }
            .nav-cta {
                margin-left: 0;
                margin-top: 8px;
                width: 100%;
            }
            .nav-cta .btn {
                width: 100%;
                justify-content: center;
            }
            .nav-toggle {
                display: block;
            }
            .page-hero {
                padding: 60px 0 40px;
            }
            .page-hero h1 {
                font-size: 1.8rem;
            }
            .page-hero p {
                font-size: 1rem;
            }
            .page-hero-stats {
                gap: 24px;
            }
            .page-hero-stats .stat-number {
                font-size: 1.5rem;
            }
            .section {
                padding: 48px 0;
            }
            .section-header h2 {
                font-size: 1.6rem;
            }
            .grid-3,
            .grid-2 {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .grid-4 {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .featured-card {
                grid-template-columns: 1fr;
            }
            .featured-card .featured-img {
                aspect-ratio: 16 / 9;
            }
            .featured-card .featured-body {
                padding: 24px 20px;
            }
            .featured-card .featured-body h2 {
                font-size: 1.3rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .list-item {
                padding: 14px 16px;
                flex-wrap: wrap;
            }
            .cta-section h2 {
                font-size: 1.6rem;
            }
            .pagination a,
            .pagination span {
                width: 36px;
                height: 36px;
                font-size: 0.8rem;
            }
            .pagination .next,
            .pagination .prev {
                width: auto;
                padding: 0 14px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .page-hero h1 {
                font-size: 1.5rem;
            }
            .page-hero-stats .stat-number {
                font-size: 1.3rem;
            }
            .grid-4 {
                grid-template-columns: 1fr;
            }
            .section-header h2 {
                font-size: 1.4rem;
            }
            .card-body {
                padding: 16px 18px 18px;
            }
            .card-body h3 {
                font-size: 1rem;
            }
            .featured-card .featured-body h2 {
                font-size: 1.1rem;
            }
            .btn-lg {
                padding: 14px 28px;
                font-size: 0.95rem;
            }
            .nav-menu a {
                font-size: 0.9rem;
                padding: 10px 14px;
            }
        }

        /* ===== Utilities ===== */
        .text-center {
            text-align: center;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-32 {
            margin-top: 32px;
        }
        .mb-16 {
            margin-bottom: 16px;
        }
        .mb-32 {
            margin-bottom: 32px;
        }
        .gap-8 {
            gap: 8px;
        }
        .gap-12 {
            gap: 12px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .flex-wrap {
            flex-wrap: wrap;
        }