/* roulang page: index */
:root {
            --primary: #0B0F17;
            --accent-cyan: #00D2B4;
            --accent-blue: #2563EB;
            --bg-light: #F8FAFC;
            --text-dark: #020817;
            --text-regular: #1E293B;
            --text-sub: #64748B;
            --border-color: #E2E8F0;
            --radius-md: 10px;
            --radius-lg: 16px;
            --shadow-subtle: 0 10px 25px -5px rgba(0, 0, 0, 0.04), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
            --transition-smooth: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
        }

        body {
            font-family: var(--font-sans, -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif);
            color: var(--text-regular);
            background-color: #FFFFFF;
            -webkit-font-smoothing: antialiased;
        }

        .metric-mono {
            font-family: 'JetBrains Mono', SFMono-Regular, monospace;
        }

        .hero-pattern-bg {
            background-color: #0B0F17;
            background-image: linear-gradient(180deg, rgba(11, 15, 23, 0.85) 0%, rgba(11, 15, 23, 0.95) 100%), url('/assets/images/9236f35978171363.webp');
            background-size: cover;
            background-position: center;
        }

        .card-interaction {
            transition: var(--transition-smooth);
            border: 1px solid var(--border-color);
        }
        .card-interaction:hover {
            transform: translateY(-4px);
            border-color: var(--accent-cyan);
            box-shadow: 0 20px 30px -10px rgba(0, 210, 180, 0.12);
        }

        .details-item summary::-webkit-details-marker {
            display: none;
        }

        .glow-accent {
            box-shadow: 0 0 25px -5px rgba(0, 210, 180, 0.35);
        }