/* roulang page: index */
:root {
            --primary: #059669;
            --primary-hover: #047857;
            --accent: #ea580c;
            --accent-hover: #c2410c;
            --dark-base: #0f172a;
            --text-main: #0f172a;
            --text-muted: #475569;
            --bg-light: #f8fafc;
            --card-border: #e2e8f0;
        }
        html {
            scroll-behavior: smooth;
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
        }
        body {
            color: #334155;
            background-color: #ffffff;
            line-height: 1.75;
        }
        .container {
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }
        .section-py {
            padding-top: 5rem;
            padding-bottom: 5rem;
        }
        @media (max-width: 768px) {
            .section-py {
                padding-top: 3.5rem;
                padding-bottom: 3.5rem;
            }
        }
        .card-shadow {
            box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
            transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .card-shadow:hover {
            box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
            transform: translateY(-3px);
        }
        details > summary {
            list-style: none;
        }
        details > summary::-webkit-details-marker {
            display: none;
        }
        .hero-bg {
            background-image: linear-gradient(rgba(15, 23, 42, 0.82), rgba(15, 23, 42, 0.88)), url('/assets/images/b949824980f10142.webp');
            background-size: cover;
            background-position: center;
        }