/* roulang page: index */
:root {
            --es-cyan: #00FF9D;
            --es-purple: #6E3AFF;
            --bg-dark: #0B0E14;
        }
        body {
            background-color: var(--bg-dark);
            color: #F3F4F6;
            overflow-x: hidden;
            font-family: 'PingFang SC', "Microsoft YaHei", sans-serif;
        }
        .tech-grid-bg {
            background-size: 40px 40px;
            background-image: 
                linear-gradient(to right, rgba(255, 255, 255, 0.03) 1px, transparent 1px),
                linear-gradient(to bottom, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
        }
        .gold-metal-border {
            border: 1px solid rgba(212, 175, 55, 0.3);
            background: linear-gradient(135deg, rgba(25, 28, 38, 0.95), rgba(15, 18, 26, 0.95));
            box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.8), inset 0 1px 0 rgba(255, 215, 0, 0.15);
        }
        .tech-card {
            border: 1px solid rgba(148, 163, 184, 0.1);
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .tech-card:hover {
            border-color: rgba(0, 255, 157, 0.4);
            transform: translateY(-4px);
            box-shadow: 0 12px 28px -8px rgba(0, 255, 157, 0.15);
        }