/* roulang page: index */
:root {
            --primary: #132924;
            --primary-light: #1f3d34;
            --primary-dark: #0a1a16;
            --accent: #c9a96a;
            --accent-light: #e8d5b5;
            --accent-dark: #a8823f;
            --bg: #f7f5f0;
            --bg-alt: #f0ece3;
            --bg-dark: #0d1a17;
            --text: #1c2622;
            --text-muted: #6b7d76;
            --text-light: #a4b5ae;
            --border: #e3dccf;
            --border-dark: #2a4a40;
            --radius-xl: 24px;
            --radius-lg: 18px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow: 0 6px 24px rgba(0, 0, 0, 0.07);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.10);
            --shadow-primary: 0 8px 24px rgba(19, 41, 36, 0.25);
            --gradient-brand: linear-gradient(145deg, #132924, #1f3d34 55%, #2a5144);
            --gradient-gold: linear-gradient(135deg, #c9a96a, #e0c896);
            --gradient-card: linear-gradient(145deg, #ffffff, #faf8f2);
            --transition: all 0.3s ease;
            --font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-family);
            background: var(--bg);
            color: var(--text);
            line-height: 1.65;
            font-size: 16px;
            overflow-x: hidden;
        }

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

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

        .shell {
            display: flex;
            min-height: 100vh;
        }

        /* 左侧竖向导航 */
        .sidebar {
            width: 260px;
            min-height: 100vh;
            position: fixed;
            top: 0;
            left: 0;
            z-index: 1040;
            background: var(--gradient-brand);
            color: #fff;
            display: flex;
            flex-direction: column;
            padding: 0;
            border-right: 1px solid rgba(255, 255, 255, 0.06);
            box-shadow: 4px 0 30px rgba(0, 0, 0, 0.12);
            transition: var(--transition);
        }

        .sidebar-brand {
            padding: 32px 24px 24px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .sidebar-brand .brand-icon {
            width: 48px;
            height: 48px;
            border-radius: 14px;
            background: var(--gradient-gold);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--primary-dark);
            margin-bottom: 14px;
            box-shadow: 0 4px 14px rgba(201, 169, 106, 0.4);
        }

        .sidebar-brand .brand-text {
            font-size: 20px;
            font-weight: 700;
            letter-spacing: 1px;
            line-height: 1.4;
            color: #fff;
        }

        .sidebar-brand .brand-sub {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
            margin-top: 6px;
            letter-spacing: 0.5px;
        }

        .sidebar-nav {
            padding: 24px 16px;
            flex: 1;
        }

        .sidebar-nav .nav-label {
            font-size: 12px;
            text-transform: uppercase;
            color: rgba(255, 255, 255, 0.4);
            letter-spacing: 1.5px;
            padding: 0 12px;
            margin-bottom: 12px;
            font-weight: 600;
        }

        .sidebar-nav .nav-item {
            display: flex;
            align-items: center;
            padding: 12px 14px;
            border-radius: 12px;
            color: rgba(255, 255, 255, 0.8);
            font-size: 15px;
            font-weight: 500;
            margin-bottom: 4px;
            transition: var(--transition);
            position: relative;
        }
        .sidebar-nav .nav-item i {
            width: 22px;
            margin-right: 10px;
            font-size: 16px;
            text-align: center;
            opacity: 0.7;
        }
        .sidebar-nav .nav-item:hover {
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
        }
        .sidebar-nav .nav-item.active {
            background: rgba(201, 169, 106, 0.18);
            color: var(--accent-light);
            font-weight: 600;
        }
        .sidebar-nav .nav-item.active::before {
            content: "";
            position: absolute;
            left: -16px;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 28px;
            border-radius: 4px;
            background: var(--accent);
        }
        .sidebar-nav .nav-item.active i {
            opacity: 1;
            color: var(--accent);
        }

        .sidebar-footer {
            padding: 20px 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }
        .sidebar-footer .footnote {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.5);
            line-height: 1.6;
        }
        .sidebar-footer .footnote i {
            margin-right: 4px;
            font-size: 11px;
        }

        /* 主区域 */
        .main-area {
            flex: 1;
            margin-left: 260px;
            min-width: 0;
        }

        .mobile-header {
            display: none;
        }

        /* 通用容器 */
        .section {
            padding: 72px 56px;
        }
        .section-alt {
            background: var(--bg-alt);
        }

        .section-head {
            margin-bottom: 36px;
            max-width: 700px;
        }
        .section-head .section-tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 30px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 1px;
            color: var(--accent-dark);
            background: rgba(201, 169, 106, 0.12);
            text-transform: uppercase;
            margin-bottom: 12px;
        }
        .section-head h2 {
            font-size: 30px;
            font-weight: 700;
            color: var(--text);
            line-height: 1.3;
            letter-spacing: 0.5px;
            margin-bottom: 12px;
        }
        .section-head p {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* Hero 全宽矮横幅 */
        .hero-section {
            position: relative;
            background: url('/assets/images/backpic/back-1.jpg') center center / cover no-repeat;
            padding: 90px 56px 80px;
            color: #fff;
            overflow: hidden;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        .hero-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(10, 26, 22, 0.92) 0%, rgba(19, 41, 36, 0.75) 55%, rgba(19, 41, 36, 0.4) 100%);
            z-index: 1;
        }
        .hero-section::after {
            content: "";
            position: absolute;
            inset: 0;
            background: radial-gradient(circle at 80% 20%, rgba(201, 169, 106, 0.15), transparent 60%);
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 780px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 18px;
            background: rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 30px;
            font-size: 13px;
            font-weight: 500;
            color: var(--accent-light);
            margin-bottom: 22px;
            letter-spacing: 1px;
        }
        .hero-badge i {
            font-size: 14px;
        }

        .hero-content h1 {
            font-size: 38px;
            font-weight: 700;
            line-height: 1.25;
            margin-bottom: 16px;
            color: #fff;
            letter-spacing: 0.5px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
        }

        .hero-content .hero-desc {
            font-size: 16px;
            line-height: 1.75;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 28px;
            max-width: 640px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 40px;
        }

        .btn-brand {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 30px;
            border-radius: 50px;
            font-size: 15px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-align: center;
        }
        .btn-brand-gold {
            background: var(--gradient-gold);
            color: var(--primary-dark);
            box-shadow: 0 4px 16px rgba(201, 169, 106, 0.4);
        }
        .btn-brand-gold:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(201, 169, 106, 0.5);
            color: var(--primary-dark);
        }
        .btn-brand-gold:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(201, 169, 106, 0.3);
        }
        .btn-brand-outline {
            background: transparent;
            color: #fff;
            border: 1.5px solid rgba(255, 255, 255, 0.5);
        }
        .btn-brand-outline:hover {
            border-color: var(--accent);
            color: var(--accent-light);
            background: rgba(255, 255, 255, 0.05);
            transform: translateY(-2px);
        }

        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            padding-top: 28px;
        }
        .stat-block {
            text-align: left;
        }
        .stat-block .stat-num {
            font-size: 28px;
            font-weight: 700;
            color: var(--accent-light);
            font-family: "Georgia", serif;
            line-height: 1.2;
        }
        .stat-block .stat-label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 4px;
        }

        /* 入口矩阵 */
        .entry-section {
            background: var(--bg);
            padding: 72px 56px;
        }

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

        .entry-card {
            background: var(--gradient-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            text-align: left;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .entry-card::after {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: var(--gradient-gold);
            transform: scaleX(0);
            transform-origin: left;
            transition: var(--transition);
        }
        .entry-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: var(--accent-light);
        }
        .entry-card:hover::after {
            transform: scaleX(1);
        }

        .entry-card .entry-icon {
            width: 52px;
            height: 52px;
            border-radius: 16px;
            background: rgba(19, 41, 36, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--primary);
            margin-bottom: 18px;
            transition: var(--transition);
        }
        .entry-card:hover .entry-icon {
            background: var(--gradient-brand);
            color: var(--accent-light);
            box-shadow: var(--shadow-primary);
        }
        .entry-card h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text);
        }
        .entry-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 16px;
        }
        .entry-card .entry-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }
        .entry-card .entry-link i {
            font-size: 12px;
            transition: var(--transition);
        }
        .entry-card:hover .entry-link {
            color: var(--accent-dark);
        }
        .entry-card:hover .entry-link i {
            transform: translateX(4px);
        }

        @media (max-width: 992px) {
            .entry-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 576px) {
            .entry-grid {
                grid-template-columns: 1fr;
            }
        }

        /* 里程碑 */
        .milestone-section {
            background: var(--gradient-brand);
            padding: 72px 56px;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .milestone-section::before {
            content: "";
            position: absolute;
            top: -100px;
            right: -100px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(201, 169, 106, 0.1);
        }
        .milestone-section::after {
            content: "";
            position: absolute;
            bottom: -80px;
            left: -50px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.03);
        }

        .milestone-section .section-head h2 {
            color: #fff;
        }
        .milestone-section .section-head p {
            color: rgba(255, 255, 255, 0.7);
        }
        .milestone-section .section-tag {
            background: rgba(201, 169, 106, 0.2) !important;
            color: var(--accent-light) !important;
        }

        .timeline-wrap {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .milestone-card {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-lg);
            padding: 24px;
            position: relative;
            transition: var(--transition);
        }
        .milestone-card:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-4px);
        }
        .milestone-card .m-year {
            font-size: 30px;
            font-weight: 700;
            font-family: "Georgia", serif;
            color: var(--accent);
            margin-bottom: 8px;
            line-height: 1;
        }
        .milestone-card .m-title {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 6px;
        }
        .milestone-card .m-desc {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.6;
        }

        @media (max-width: 992px) {
            .timeline-wrap {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 576px) {
            .timeline-wrap {
                grid-template-columns: 1fr;
            }
        }

        /* 资讯区 */
        .news-section {
            background: var(--bg-alt);
            padding: 72px 56px;
        }

        .news-layout {
            display: grid;
            grid-template-columns: 1fr 340px;
            gap: 32px;
        }

        .news-list-wrap {
            background: var(--bg);
            border-radius: var(--radius-xl);
            border: 1px solid var(--border);
            padding: 32px;
            box-shadow: var(--shadow-sm);
        }

        .news-list-title {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text);
        }
        .news-list-title i {
            color: var(--accent);
        }

        .news-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 16px 0;
            border-bottom: 1px solid var(--border);
            transition: var(--transition);
        }
        .news-item:last-child {
            border-bottom: none;
        }
        .news-item:hover {
            padding-left: 8px;
        }
        .news-item a {
            font-size: 15px;
            color: var(--text);
            font-weight: 500;
            line-height: 1.5;
            flex: 1;
        }
        .news-item a:hover {
            color: var(--accent-dark);
        }
        .news-item .news-date {
            font-size: 13px;
            color: var(--text-muted);
            white-space: nowrap;
            margin-left: 16px;
            font-variant-numeric: tabular-nums;
        }
        .news-item .news-tag {
            font-size: 12px;
            padding: 2px 8px;
            border-radius: 4px;
            background: rgba(201, 169, 106, 0.12);
            color: var(--accent-dark);
            font-weight: 500;
            white-space: nowrap;
            margin-left: 10px;
        }

        .news-sidebar {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .trending-panel {
            background: var(--bg);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            padding: 24px;
            box-shadow: var(--shadow-sm);
        }
        .trending-panel h4 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 16px;
            color: var(--text);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .trending-panel h4 i {
            color: var(--accent);
        }
        .trend-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 10px 0;
            border-bottom: 1px dashed var(--border);
        }
        .trend-item:last-child {
            border-bottom: none;
        }
        .trend-item .rank {
            width: 24px;
            height: 24px;
            border-radius: 8px;
            background: rgba(19, 41, 36, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            font-weight: 700;
            color: var(--primary);
            flex-shrink: 0;
        }
        .trend-item .rank.top {
            background: var(--gradient-gold);
            color: var(--primary-dark);
        }
        .trend-item .trend-text {
            font-size: 14px;
            color: var(--text);
            line-height: 1.5;
            flex: 1;
        }
        .trend-item .trend-text a {
            color: var(--text);
        }
        .trend-item .trend-text a:hover {
            color: var(--accent-dark);
        }

        .news-panel-img {
            border-radius: var(--radius-lg);
            overflow: hidden;
            position: relative;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
        }
        .news-panel-img img {
            width: 100%;
            height: 140px;
            object-fit: cover;
        }
        .news-panel-img .img-caption {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 12px 16px;
            background: linear-gradient(to top, rgba(0, 0, 0, 0.7), transparent);
            color: #fff;
            font-size: 13px;
            font-weight: 500;
        }

        @media (max-width: 992px) {
            .news-layout {
                grid-template-columns: 1fr;
            }
        }

        /* FAQ */
        .faq-section {
            background: var(--bg);
            padding: 72px 56px;
        }

        .faq-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }

        .faq-item {
            background: var(--gradient-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 28px;
            transition: var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow);
            border-color: var(--accent-light);
        }
        .faq-item .faq-q {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 10px;
            display: flex;
            align-items: flex-start;
            gap: 10px;
        }
        .faq-item .faq-q .q-icon {
            color: var(--accent);
            font-size: 18px;
            flex-shrink: 0;
        }
        .faq-item .faq-a {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.75;
        }

        @media (max-width: 768px) {
            .faq-grid {
                grid-template-columns: 1fr;
            }
        }

        /* 平台保障 */
        .assurance-section {
            background: var(--bg-alt);
            padding: 72px 56px;
            position: relative;
        }

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

        .assurance-card {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-xl);
            padding: 32px 28px;
            text-align: center;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .assurance-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 3px;
            background: var(--gradient-gold);
            border-radius: 3px;
        }
        .assurance-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
        .assurance-card .a-icon {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: rgba(19, 41, 36, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: var(--primary);
            margin: 0 auto 18px;
            transition: var(--transition);
        }
        .assurance-card:hover .a-icon {
            background: var(--gradient-brand);
            color: var(--accent-light);
        }
        .assurance-card h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 10px;
        }
        .assurance-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 0;
        }

        @media (max-width: 992px) {
            .assurance-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 576px) {
            .assurance-grid {
                grid-template-columns: 1fr;
            }
        }

        /* App板块 */
        .app-section {
            background: url('/assets/images/backpic/back-2.jpg') center center / cover no-repeat;
            padding: 80px 56px;
            position: relative;
            color: #fff;
        }
        .app-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(10, 26, 22, 0.92), rgba(19, 41, 36, 0.8));
        }
        .app-content {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            gap: 48px;
            flex-wrap: wrap;
        }
        .app-info {
            flex: 1;
            min-width: 280px;
        }
        .app-info .app-tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 30px;
            font-size: 12px;
            font-weight: 600;
            background: rgba(201, 169, 106, 0.2);
            color: var(--accent-light);
            text-transform: uppercase;
            margin-bottom: 14px;
        }
        .app-info h2 {
            font-size: 30px;
            font-weight: 700;
            margin-bottom: 14px;
            color: #fff;
        }
        .app-info p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.8);
            line-height: 1.7;
            max-width: 460px;
            margin-bottom: 24px;
        }
        .app-buttons {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .app-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 12px 24px;
            border-radius: 14px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: #fff;
            font-size: 14px;
            font-weight: 500;
            backdrop-filter: blur(8px);
            transition: var(--transition);
        }
        .app-btn i {
            font-size: 22px;
        }
        .app-btn:hover {
            background: var(--gradient-gold);
            color: var(--primary-dark);
            border-color: transparent;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(201, 169, 106, 0.3);
        }

        /* Footer */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 48px 56px 24px;
        }
        .footer-inner {
            display: flex;
            justify-content: space-between;
            align-items: flex-start;
            flex-wrap: wrap;
            gap: 32px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand {
            max-width: 300px;
        }
        .footer-brand .f-logo {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }
        .footer-brand .f-desc {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.5);
            line-height: 1.6;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-links .f-title {
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 6px;
        }
        .footer-links a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--accent-light);
            padding-left: 4px;
        }
        .footer-bottom {
            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);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-bottom a:hover {
            color: var(--accent-light);
        }

        /* 响应式 */
        @media (max-width: 991.98px) {
            .sidebar {
                position: fixed;
                left: -280px;
                width: 280px;
                transition: left 0.4s ease;
                box-shadow: 4px 0 40px rgba(0, 0, 0, 0.3);
            }
            .sidebar.open {
                left: 0;
            }

            .main-area {
                margin-left: 0;
            }

            .mobile-header {
                display: flex;
                align-items: center;
                justify-content: space-between;
                padding: 16px 24px;
                background: var(--gradient-brand);
                color: #fff;
                position: sticky;
                top: 0;
                z-index: 1030;
                box-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
            }
            .mobile-header .mobile-logo {
                font-size: 18px;
                font-weight: 700;
                color: #fff;
                line-height: 1.3;
            }
            .mobile-header .mobile-logo small {
                display: block;
                font-size: 11px;
                font-weight: 400;
                color: rgba(255, 255, 255, 0.6);
            }
            .mobile-toggle {
                width: 42px;
                height: 42px;
                background: rgba(255, 255, 255, 0.15);
                border: 1px solid rgba(255, 255, 255, 0.2);
                border-radius: 12px;
                color: #fff;
                font-size: 18px;
                display: flex;
                align-items: center;
                justify-content: center;
                cursor: pointer;
                transition: var(--transition);
            }
            .mobile-toggle:hover {
                background: rgba(255, 255, 255, 0.25);
            }

            .sidebar-overlay {
                position: fixed;
                inset: 0;
                background: rgba(0, 0, 0, 0.4);
                z-index: 1035;
                display: none;
                backdrop-filter: blur(4px);
            }
            .sidebar-overlay.show {
                display: block;
            }

            .section,
            .entry-section,
            .milestone-section,
            .news-section,
            .faq-section,
            .assurance-section,
            .app-section {
                padding: 48px 24px;
            }

            .hero-section {
                padding: 56px 24px;
            }
            .hero-content h1 {
                font-size: 30px;
            }

            .section-head h2 {
                font-size: 24px;
            }
        }

        @media (max-width: 768px) {
            .hero-stats {
                gap: 20px;
            }
            .stat-block .stat-num {
                font-size: 22px;
            }

            .news-item {
                flex-wrap: wrap;
            }
            .news-item .news-date {
                margin-left: 0;
                font-size: 12px;
            }
            .news-item .news-tag {
                display: none;
            }

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

        @media (max-width: 520px) {
            .hero-actions {
                flex-direction: column;
            }
            .hero-actions .btn-brand {
                justify-content: center;
            }

            .section,
            .entry-section,
            .milestone-section,
            .news-section,
            .faq-section,
            .assurance-section,
            .app-section {
                padding: 36px 16px;
            }

            .hero-section {
                padding: 40px 16px;
            }
            .hero-content h1 {
                font-size: 26px;
            }

            .news-list-wrap {
                padding: 20px;
            }

            .faq-item {
                padding: 20px;
            }

            .entry-card {
                padding: 20px;
            }
        }

        /* 通用按钮 focus */
        .btn-brand:focus-visible,
        .app-btn:focus-visible,
        .mobile-toggle:focus-visible,
        a:focus-visible {
            outline: 3px solid rgba(201, 169, 106, 0.4);
            outline-offset: 2px;
        }

        /* 移动端navbar */
        @media (max-width: 991.98px) {
            .sidebar-nav .nav-item.active::before {
                left: 12px;
                width: 3px;
            }
        }