/* roulang page: index */
:root {
            --primary: #0A192F;
            --accent: #00B4D8;
            --vitality: #10B981;
            --bg-light: #F8FAFC;
            --text-main: #0F172A;
            --text-body: #334155;
            --text-muted: #64748B;
            --radius-card: 1rem;
            --shadow-subtle: 0 10px 25px -5px rgba(10, 25, 47, 0.05), 0 8px 10px -6px rgba(10, 25, 47, 0.05);
            --shadow-hover: 0 20px 30px -10px rgba(0, 180, 216, 0.15);
        }

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

        body {
            font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            color: var(--text-body);
            background-color: var(--bg-light);
            line-height: 1.8;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        html {
            scroll-behavior: smooth;
        }

        .container-custom {
            max-width: 1280px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }

        @media (min-width: 768px) {
            .container-custom {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }

        .hero-bg-overlay {
            background: linear-gradient(180deg, rgba(10, 25, 47, 0.88) 0%, rgba(11, 19, 43, 0.94) 100%),
                        url('/assets/images/8bec115221de27c6.png') center/cover no-repeat;
        }

        .section-padding {
            padding-top: 5.5rem;
            padding-bottom: 5.5rem;
        }

        @media (max-width: 768px) {
            .section-padding {
                padding-top: 3.5rem;
                padding-bottom: 3.5rem;
            }
        }

        .transition-interactive {
            transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        }

        .card-custom {
            background-color: #ffffff;
            border-radius: var(--radius-card);
            border: 1px solid #E2E8F0;
            box-shadow: var(--shadow-subtle);
            transition: all 0.3s ease;
        }

        .card-custom:hover {
            transform: translateY(-4px);
            border-color: rgba(0, 180, 216, 0.4);
            box-shadow: var(--shadow-hover);
        }

        .badge-pill {
            display: inline-flex;
            align-items: center;
            padding: 0.25rem 0.75rem;
            border-radius: 9999px;
            font-size: 0.8125rem;
            font-weight: 500;
        }

        /* 纯原生手风琴样式 */
        .faq-item details summary {
            list-style: none;
            cursor: pointer;
        }
        .faq-item details summary::-webkit-details-marker {
            display: none;
        }
        .faq-item details[open] summary svg {
            transform: rotate(180deg);
        }

        /* 移动端底部固定条安全区 */
        .mobile-bar-shim {
            padding-bottom: 4.5rem;
        }
        @media (min-width: 768px) {
            .mobile-bar-shim {
                padding-bottom: 0;
            }
        }