/* roulang page: index */
:root {
            --bg-base: #060B18;
            --bg-card: rgba(15, 23, 42, 0.72);
            --primary-glow: #0066FF;
            --accent-glow: #00F0FF;
            --border-glass: rgba(255, 255, 255, 0.08);
            --text-main: #F8FAFC;
            --text-sub: #94A3B8;
        }
        body {
            background-color: var(--bg-base);
            color: var(--text-main);
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            overflow-x: hidden;
        }
        .glass-panel {
            background: var(--bg-card);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-glass);
        }
        .glass-panel:hover {
            border-color: rgba(0, 240, 255, 0.3);
        }
        .btn-glow {
            background: linear-gradient(135deg, #0052D4, #4364F7);
            box-shadow: 0 0 20px rgba(0, 102, 255, 0.35);
            transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .btn-glow:hover {
            box-shadow: 0 0 32px rgba(0, 240, 255, 0.6);
            transform: translateY(-2px);
        }
        .btn-outline-glow {
            border: 1px solid rgba(0, 240, 255, 0.4);
            background: rgba(0, 102, 255, 0.06);
            transition: all 0.25s ease;
        }
        .btn-outline-glow:hover {
            border-color: #00F0FF;
            background: rgba(0, 240, 255, 0.15);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.35);
        }
        .neon-text {
            background: linear-gradient(90deg, #F8FAFC 20%, #00F0FF 80%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .countdown-circle {
            position: relative;
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }
        .countdown-circle svg {
            transform: rotate(-90deg);
        }