/* roulang page: index */
:root {
            --primary: #0F2C59;
            --secondary: #10B981;
            --accent: #F59E0B;
            --dark: #0B132B;
            --bg-light: #F8FAFC;
        }
        body {
            font-family: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
            letter-spacing: -0.01em;
            background-color: var(--bg-light);
            color: #1E293B;
        }
        .hero-overlay {
            background: linear-gradient(135deg, rgba(11, 19, 43, 0.92) 0%, rgba(15, 44, 89, 0.85) 60%, rgba(16, 185, 129, 0.4) 100%);
        }
        .glass-header {
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
        }
        .card-hover {
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .card-hover:hover {
            transform: translateY(-4px);
            box-shadow: 0 20px 25px -5px rgba(15, 44, 89, 0.1), 0 10px 10px -5px rgba(15, 44, 89, 0.04);
        }
        details > summary {
            list-style: none;
        }
        details > summary::-webkit-details-marker {
            display: none;
        }