/* roulang page: index */
:root {
            --brand: #1a5c4a;
            --brand-dark: #0b2f25;
            --gold: #c8a96e;
            --cream: #faf8f5;
            --ink: #1e2d2a;
            --muted: #5f6f6a;
            --border: #e5e0d8;
            --radius-sm: 0.5rem;
            --radius-md: 0.875rem;
            --radius-lg: 1.25rem;
            --radius-xl: 1.75rem;
            --shadow-soft: 0 4px 24px rgba(26, 92, 74, 0.08);
            --shadow-lift: 0 8px 40px rgba(26, 92, 74, 0.12);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
            line-height: 1.7;
            color: var(--ink);
            background-color: var(--cream);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            overflow-x: hidden;
        }

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

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

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 3px solid rgba(200, 169, 110, 0.6);
            outline-offset: 2px;
            border-radius: 4px;
        }

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
        }

        /* 左侧竖向导航 */
        .site-shell {
            display: flex;
            min-height: 100vh;
            width: 100%;
        }

        .sidebar-nav {
            position: fixed;
            top: 0;
            left: 0;
            width: 260px;
            height: 100vh;
            background: linear-gradient(180deg, var(--brand-dark) 0%, var(--brand) 55%, #124536 100%);
            color: #fff;
            display: flex;
            flex-direction: column;
            z-index: 50;
            transition: transform var(--transition);
            padding: 2rem 1.25rem 1.5rem;
            box-shadow: 4px 0 30px rgba(0, 0, 0, 0.15);
        }

        .sidebar-logo {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            margin-bottom: 2.5rem;
            padding: 0 0.4rem;
        }

        .sidebar-logo-icon {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: var(--gold);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--brand-dark);
            font-size: 1.15rem;
            flex-shrink: 0;
        }

        .sidebar-logo-text {
            font-size: 1.05rem;
            font-weight: 700;
            line-height: 1.35;
            letter-spacing: 0.02em;
        }

        .sidebar-nav-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 0.35rem;
            flex: 1;
        }

        .sidebar-nav-link {
            display: flex;
            align-items: center;
            gap: 0.7rem;
            padding: 0.8rem 1rem;
            border-radius: var(--radius-md);
            color: rgba(255, 255, 255, 0.8);
            font-size: 0.95rem;
            font-weight: 500;
            transition: all var(--transition);
            position: relative;
        }

        .sidebar-nav-link i {
            font-size: 1.05rem;
            width: 1.3rem;
            text-align: center;
        }

        .sidebar-nav-link:hover {
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
        }

        .sidebar-nav-link.active {
            background: rgba(200, 169, 110, 0.2);
            color: var(--gold);
            font-weight: 600;
        }

        .sidebar-nav-link.active::before {
            content: '';
            position: absolute;
            left: -1.25rem;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 28px;
            background: var(--gold);
            border-radius: 0 4px 4px 0;
        }

        .sidebar-footer {
            padding-top: 1rem;
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.55);
            text-align: center;
            line-height: 1.5;
        }

        .main-content {
            margin-left: 260px;
            flex: 1;
            width: calc(100% - 260px);
            min-height: 100vh;
        }

        /* 移动端顶部导航 */
        .mobile-header {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 45;
            background: var(--brand-dark);
            color: #fff;
            padding: 0.8rem 1rem;
            align-items: center;
            justify-content: space-between;
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.2);
        }

        .mobile-logo {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-weight: 700;
            font-size: 0.95rem;
            line-height: 1.3;
        }

        .mobile-logo-icon {
            width: 34px;
            height: 34px;
            border-radius: 50%;
            background: var(--gold);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--brand-dark);
            font-size: 0.95rem;
            flex-shrink: 0;
        }

        .mobile-menu-btn {
            color: #fff;
            font-size: 1.4rem;
            padding: 0.3rem 0.5rem;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }

        .mobile-menu-btn:hover {
            background: rgba(255, 255, 255, 0.12);
        }

        /* 移动端抽屉 */
        .mobile-drawer {
            display: none;
            position: fixed;
            top: 0;
            left: -100%;
            width: 280px;
            height: 100vh;
            background: linear-gradient(180deg, var(--brand-dark) 0%, var(--brand) 100%);
            color: #fff;
            z-index: 60;
            padding: 1.5rem 1.25rem;
            transition: left 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            flex-direction: column;
            gap: 0.5rem;
        }

        .mobile-drawer.open {
            left: 0;
        }

        .mobile-drawer-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.5);
            z-index: 55;
            opacity: 0;
            transition: opacity 0.3s;
        }

        .mobile-drawer-overlay.show {
            opacity: 1;
        }

        /* 通用容器 */
        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 2rem;
        }

        /* 斜切装饰 */
        .skew-hero {
            position: relative;
        }
        .skew-hero::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: 0;
            right: 0;
            height: 80px;
            background: var(--cream);
            clip-path: polygon(0 0, 100% 40px, 100% 100%, 0 100%);
            z-index: 2;
        }

        /* 按钮 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            padding: 0.85rem 1.75rem;
            border-radius: 9999px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: all var(--transition);
            letter-spacing: 0.01em;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--brand);
            color: #fff;
            box-shadow: 0 4px 16px rgba(26, 92, 74, 0.3);
        }
        .btn-primary:hover {
            background: var(--brand-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(26, 92, 74, 0.4);
        }
        .btn-gold {
            background: var(--gold);
            color: var(--brand-dark);
            box-shadow: 0 4px 16px rgba(200, 169, 110, 0.35);
        }
        .btn-gold:hover {
            background: #b69255;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(200, 169, 110, 0.45);
        }
        .btn-outline-light {
            background: transparent;
            color: #fff;
            border: 1.5px solid rgba(255, 255, 255, 0.5);
        }
        .btn-outline-light:hover {
            border-color: var(--gold);
            color: var(--gold);
            background: rgba(255, 255, 255, 0.05);
        }
        .btn-outline-brand {
            background: transparent;
            color: var(--brand);
            border: 1.5px solid var(--brand);
        }
        .btn-outline-brand:hover {
            background: var(--brand);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(26, 92, 74, 0.3);
        }

        /* 徽章/标签 */
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.35rem 0.9rem;
            border-radius: 9999px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.03em;
        }
        .badge-gold {
            background: rgba(200, 169, 110, 0.15);
            color: #8a6d3b;
        }
        .badge-brand {
            background: rgba(26, 92, 74, 0.1);
            color: var(--brand);
        }

        /* 卡片 */
        .card {
            background: #fff;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-soft);
            transition: all var(--transition);
            overflow: hidden;
        }
        .card:hover {
            box-shadow: var(--shadow-lift);
            transform: translateY(-4px);
        }

        /* 数据块 */
        .stat-block {
            text-align: center;
            padding: 1.5rem 1rem;
        }
        .stat-number {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--brand);
            line-height: 1.2;
        }
        .stat-label {
            font-size: 0.85rem;
            color: var(--muted);
            margin-top: 0.35rem;
        }

        /* FAQ */
        .faq-item {
            border-bottom: 1px solid var(--border);
            padding: 1.25rem 0;
        }
        .faq-item:last-child {
            border-bottom: none;
        }
        .faq-question {
            font-weight: 600;
            font-size: 1rem;
            color: var(--ink);
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            user-select: none;
        }
        .faq-question i {
            color: var(--gold);
            transition: transform 0.3s;
            font-size: 0.85rem;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            color: var(--muted);
            font-size: 0.9rem;
            padding: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(45deg);
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding-top: 0.75rem;
        }

        /* 资讯列表 */
        .news-list-item {
            display: flex;
            justify-content: space-between;
            gap: 1rem;
            padding: 1rem 0;
            border-bottom: 1px solid #eee;
            align-items: baseline;
            transition: all var(--transition);
        }
        .news-list-item:hover .news-title {
            color: var(--brand);
        }
        .news-title {
            font-weight: 500;
            font-size: 0.95rem;
            transition: color var(--transition);
            flex: 1;
        }
        .news-date {
            font-size: 0.8rem;
            color: #aaa;
            white-space: nowrap;
        }

        /* 导航响应式 */
        @media (max-width: 1024px) {
            .sidebar-nav {
                display: none;
            }
            .main-content {
                margin-left: 0;
                width: 100%;
            }
            .mobile-header {
                display: flex;
            }
            .mobile-drawer {
                display: flex;
            }
            .mobile-drawer-overlay {
                display: block;
            }
            body {
                padding-top: 56px;
            }
            .container-custom {
                padding: 0 1.25rem;
            }
        }

        @media (max-width: 768px) {
            .container-custom {
                padding: 0 1rem;
            }
            .btn {
                padding: 0.7rem 1.3rem;
                font-size: 0.9rem;
            }
            .stat-number {
                font-size: 1.7rem;
            }
        }

        @media (max-width: 520px) {
            .btn {
                padding: 0.65rem 1.1rem;
                font-size: 0.85rem;
                width: 100%;
            }
            .btn-group {
                flex-direction: column;
                gap: 0.75rem;
            }
        }

        /* 动画 */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(24px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .fade-in-up {
            animation: fadeInUp 0.7s ease forwards;
        }
        .delay-1 { animation-delay: 0.15s; }
        .delay-2 { animation-delay: 0.3s; }
        .delay-3 { animation-delay: 0.45s; }