/* roulang page: index */
:root {
            --primary: #2563EB;
            --primary-dark: #0F172A;
            --accent: #10B981;
            --bg-light: #F8FAFC;
        }
        body {
            font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
            color: #334155;
            background-color: #F8FAFC;
            overflow-x: hidden;
        }
        .hero-coupon-pattern {
            background-image: radial-gradient(circle at 10px 10px, #ffffff 6px, transparent 0);
            background-size: 20px 20px;
        }
        .glass-header {
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
        }
        .smooth-shadow {
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
            transition: all 0.3s ease;
        }
        .smooth-shadow:hover {
            box-shadow: 0 12px 30px rgba(37, 99, 235, 0.08);
            transform: translateY(-3px);
        }
        details summary::-webkit-details-marker {
            display: none;
        }