/* roulang page: index */
:root {
            --color-primary: #0B0F19;
            --color-accent-green: #10B981;
            --color-accent-cyan: #06B6D4;
            --color-bg-light: #F8FAFC;
            --color-text-main: #0F172A;
            --color-text-muted: #475569;
            --color-border: #E2E8F0;
        }
        body {
            color: var(--color-text-main);
            background-color: var(--color-bg-light);
            font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
            -webkit-font-smoothing: antialiased;
        }
        .hero-pattern {
            background-color: #0B0F19;
            background-image: radial-gradient(rgba(16, 185, 129, 0.12) 1px, transparent 1px), radial-gradient(rgba(6, 182, 212, 0.1) 1px, #0B0F19 1px);
            background-size: 40px 40px;
            background-position: 0 0, 20px 20px;
        }
        .gradient-border-card {
            border: 1px solid rgba(226, 232, 240, 0.8);
            transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .gradient-border-card:hover {
            border-color: rgba(16, 185, 129, 0.5);
            transform: translateY(-2px);
            box-shadow: 0 12px 24px -10px rgba(16, 185, 129, 0.15);
        }
        .glow-dark-card {
            background: rgba(30, 41, 59, 0.7);
            border: 1px solid rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(12px);
            transition: all 0.25s ease;
        }
        .glow-dark-card:hover {
            border-color: rgba(6, 182, 212, 0.4);
            box-shadow: 0 0 20px rgba(6, 182, 212, 0.15);
        }