/* roulang page: index */
:root {
            --bg-main: #070b19;
            --bg-card: rgba(15, 23, 42, 0.75);
            --border-glow: rgba(0, 240, 255, 0.3);
            --glow-cyan: #00f0ff;
            --text-silver: #94a3b8;
        }
        body {
            background-color: var(--bg-main);
            color: #f1f5f9;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            overflow-x: hidden;
        }
        .glass-card {
            background: var(--bg-card);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid rgba(59, 130, 246, 0.2);
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .glass-card:hover {
            border-color: var(--glow-cyan);
            box-shadow: 0 10px 30px -10px rgba(0, 240, 255, 0.25);
            transform: translateY(-3px);
        }
        .btn-glow {
            background: linear-gradient(135deg, #00f0ff 0%, #3b82f6 100%);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.4);
            transition: all 0.3s ease;
        }
        .btn-glow:hover {
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.7);
            transform: translateY(-2px);
        }
        .text-gradient {
            background: linear-gradient(135deg, #ffffff 30%, #00f0ff 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .text-gradient-gold {
            background: linear-gradient(135deg, #fcd34d 0%, #f59e0b 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .custom-scrollbar::-webkit-scrollbar {
            height: 6px;
            width: 6px;
        }
        .custom-scrollbar::-webkit-scrollbar-thumb {
            background: rgba(0, 240, 255, 0.3);
            border-radius: 9999px;
        }
        .custom-scrollbar::-webkit-scrollbar-track {
            background: rgba(15, 23, 42, 0.6);
        }