/* roulang page: index */
:root {
            --primary: #059669;
            --primary-hover: #047857;
            --dark-base: #0f172a;
            --gray-bg: #f8fafc;
            --card-border: #e2e8f0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            color: #334155;
            background-color: #f8fafc;
            font-family: 'PingFang SC', system-ui, -apple-system, sans-serif;
            overflow-x: hidden;
        }
        .din-number {
            font-family: 'DIN Pro', 'Segoe UI', monospace;
            font-feature-settings: "tnum";
        }
        .hero-banner {
            background-image: linear-gradient(rgba(15, 23, 42, 0.88), rgba(15, 23, 42, 0.94)), url('/assets/images/997e599b2811cc5c.webp');
            background-size: cover;
            background-position: center;
        }
        .pattern-grid {
            background-size: 24px 24px;
            background-image: linear-gradient(to right, rgba(226, 232, 240, 0.5) 1px, transparent 1px),
                              linear-gradient(to bottom, rgba(226, 232, 240, 0.5) 1px, transparent 1px);
        }
        .glass-card {
            background: rgba(255, 255, 255, 0.95);
            border: 1px solid #e2e8f0;
            transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
        }
        .glass-card:hover {
            border-color: #10b981;
            transform: translateY(-3px);
            box-shadow: 0 12px 28px -6px rgba(5, 150, 105, 0.12);
        }
        details summary::-webkit-details-marker {
            display: none;
        }