/* roulang page: index */
:root {
            --primary: #0284C7;
            --primary-dark: #0369A1;
            --accent: #06B6D4;
            --bg-base: #F8FAFC;
            --text-main: #0F172A;
            --text-muted: #475569;
            --border-color: #E2E8F0;
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: var(--bg-base);
            color: var(--text-main);
            line-height: 1.6;
            overflow-x: hidden;
        }
        .container-custom {
            max-width: 1280px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }
        .hero-banner {
            background-image: linear-gradient(to right, rgba(15, 23, 42, 0.94) 30%, rgba(15, 23, 42, 0.8) 70%, rgba(2, 132, 199, 0.4)), url('/assets/images/68fd1d4bb320df70.jpg');
            background-size: cover;
            background-position: center;
        }
        .bg-pattern-dark {
            background-color: #0F172A;
            background-image: radial-gradient(#1E293B 1px, transparent 1px);
            background-size: 24px 24px;
        }
        .card-shadow {
            box-shadow: 0 4px 20px -2px rgba(15, 23, 42, 0.05), 0 2px 6px -1px rgba(15, 23, 42, 0.03);
            transition: all 0.25s ease-in-out;
        }
        .card-shadow:hover {
            box-shadow: 0 16px 32px -4px rgba(15, 23, 42, 0.1);
            transform: translateY(-3px);
        }
        details summary::-webkit-details-marker {
            display:none;
        }