/* roulang page: index */
:root {
            --cha-red: #8B3A2A;
            --cha-gold: #B8860B;
            --cream: #FDF8F3;
            --ink: #2E2A26;
            --ink-soft: #6B6258;
            --line: #E8DED2;
            --card-shadow: 0 8px 30px rgba(80, 55, 35, 0.08);
            --card-shadow-hover: 0 16px 40px rgba(80, 55, 35, 0.15);
            --radius-md: 12px;
            --radius-lg: 20px;
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
            background: var(--cream);
            color: var(--ink);
            line-height: 1.7;
        }
        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: opacity 0.2s;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
            font-family: inherit;
        }
        img {
            display: block;
            max-width: 100%;
        }

        /* 导航 */
        .site-header {
            background: rgba(253, 248, 243, 0.92);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--line);
            position: sticky;
            top: 0;
            z-index: 50;
        }
        .nav-link {
            font-weight: 500;
            color: var(--ink-soft);
            padding: 8px 16px;
            border-radius: 999px;
            transition: all 0.25s;
        }
        .nav-link:hover,
        .nav-link.active {
            color: var(--cha-red);
            background: rgba(139, 58, 42, 0.08);
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--cha-red);
            color: #fff;
            padding: 12px 28px;
            border-radius: 999px;
            font-weight: 600;
            font-size: 15px;
            box-shadow: 0 6px 20px rgba(139, 58, 42, 0.25);
            transition: all 0.3s;
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(139, 58, 42, 0.32);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border: 1.5px solid var(--cha-red);
            color: var(--cha-red);
            padding: 10px 26px;
            border-radius: 999px;
            font-weight: 600;
            font-size: 15px;
            transition: all 0.3s;
        }
        .btn-outline:hover {
            background: rgba(139, 58, 42, 0.06);
            transform: translateY(-2px);
        }

        /* 卡片 */
        .base-card {
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid rgba(232, 222, 210, 0.7);
            box-shadow: var(--card-shadow);
            padding: 28px;
            transition: transform 0.3s, box-shadow 0.3s;
        }
        .base-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--card-shadow-hover);
        }

        /* 徽章 */
        .badge {
            display: inline-block;
            background: rgba(184, 134, 11, 0.14);
            color: #9A6E0A;
            padding: 6px 16px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 0.02em;
        }

        /* FAQ */
        details summary {
            list-style: none;
            cursor: pointer;
            padding: 18px 24px;
            background: #fff;
            border-radius: var(--radius-md);
            border: 1px solid var(--line);
            font-weight: 600;
        }
        details summary::-webkit-details-marker {
            display: none;
        }
        details[open] summary {
            border-bottom-left-radius: 0;
            border-bottom-right-radius: 0;
            border-bottom: none;
        }
        details .faq-answer {
            padding: 18px 24px;
            background: #fff;
            border: 1px solid var(--line);
            border-top: none;
            border-radius: 0 0 var(--radius-md) var(--radius-md);
            color: var(--ink-soft);
            font-size: 15px;
        }
        .summary-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
        }
        .summary-row .fa-chevron-down {
            transition: transform 0.3s;
            color: var(--cha-red);
        }
        details[open] .summary-row .fa-chevron-down {
            transform: rotate(180deg);
        }

        /* 资讯列表 */
        .news-list a {
            display: block;
            padding: 18px 8px;
            border-bottom: 1px dashed var(--line);
            transition: background 0.2s, padding 0.2s;
        }
        .news-list a:hover {
            background: rgba(139, 58, 42, 0.03);
            padding-left: 16px;
        }

        /* 评价 */
        .rating-stars {
            color: #D4A017;
        }

        /* 页脚 */
        .site-footer {
            background: #211D18;
            color: #B8ADA3;
        }

        /* 响应式 */
        @media (max-width: 768px) {
            .mobile-menu {
                display: none;
                flex-direction: column;
                padding: 16px 24px;
                background: #fff;
                border-bottom: 1px solid var(--line);
            }
            .mobile-menu.open {
                display: flex;
            }
            .mobile-nav-link {
                padding: 14px 8px;
                border-bottom: 1px solid var(--line);
                font-weight: 500;
                color: var(--ink);
            }
            .mobile-nav-link:hover {
                color: var(--cha-red);
            }
            .desktop-nav {
                display: none;
            }
        }
        @media (min-width: 769px) {
            .mobile-menu-toggle {
                display: none !important;
            }
        }

        /* 焦点可访问性 */
        a:focus-visible,
        button:focus-visible,
        summary:focus-visible {
            outline: 3px solid rgba(184, 134, 11, 0.5);
            outline-offset: 2px;
            border-radius: 4px;
        }

        /* Hero 工具落地风格 */
        .hero-section {
            background: linear-gradient(135deg, #f7efe6 0%, #fdf8f3 100%);
            position: relative;
        }
        .hero-bg {
            background-image: url('/assets/images/backpic/back-1.jpg');
            background-size: cover;
            background-position: center;
        }
        @media (max-width: 768px) {
            .hero-bg {
                background-position: 70% center;
            }
        }

        .step-card {
            background: #fff;
            border-radius: 16px;
            padding: 16px 20px;
            box-shadow: 0 4px 18px rgba(80, 55, 35, 0.08);
            display: flex;
            align-items: center;
            gap: 14px;
        }
        .step-icon {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: rgba(139, 58, 42, 0.1);
            color: var(--cha-red);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            flex-shrink: 0;
        }