/* roulang page: index */
:root {
            --primary-green: #059669;
            --emerald-accent: #10B981;
            --track-orange: #EA580C;
            --track-amber: #F59E0B;
            --arena-dark: #0F172A;
            --surface-slate: #1E293B;
            --light-runway: #F8F9FA;
            --border-subtle: #E2E8F0;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            color: #1e293b;
            background-color: #ffffff;
            -webkit-font-smoothing: antialiased;
        }
        .arena-glass {
            background: rgba(15, 23, 42, 0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
        }
        .text-glow {
            text-shadow: 0 0 20px rgba(16, 185, 129, 0.35);
        }
        .card-hover-fx {
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .card-hover-fx:hover {
            transform: translateY(-4px);
            box-shadow: 0 20px 25px -5px rgba(15, 23, 42, 0.08), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
        }