/* roulang page: index */
:root {
            --primary: #6366F1;
            --primary-hover: #4F46E5;
            --accent: #10B981;
            --bg-dark: #0B0F19;
            --card-dark: #1E293B;
            --text-main: #F8FAFC;
            --text-muted: #94A3B8;
            --border-color: rgba(51, 65, 85, 0.6);
        }
        body {
            background-color: var(--bg-dark);
            color: var(--text-main);
            font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'PingFang SC', 'Microsoft YaHei', sans-serif;
            overflow-x: hidden;
        }
        .text-glow {
            text-shadow: 0 0 20px rgba(99, 102, 241, 0.45);
        }
        .card-hover {
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .card-hover:hover {
            transform: translateY(-4px);
            border-color: rgba(99, 102, 241, 0.5);
            box-shadow: 0 12px 24px -10px rgba(99, 102, 241, 0.2);
        }
        .glow-border {
            border: 1px solid var(--border-color);
        }
        .glow-border:hover {
            border-color: rgba(16, 185, 129, 0.5);
        }
        .hero-bg-overlay {
            background: linear-gradient(180deg, rgba(11, 15, 25, 0.82) 0%, rgba(11, 15, 25, 0.95) 75%, #0B0F19 100%);
        }