/* roulang page: index */
:root {
            --bg-main: #070A13;
            --bg-card: rgba(16, 24, 48, 0.75);
            --color-cyan: #00D2FF;
            --color-green: #00F5A0;
            --border-glow: rgba(0, 210, 255, 0.18);
        }
        body {
            background-color: var(--bg-main);
            color: #E2E8F0;
            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 rgba(255, 255, 255, 0.08);
            box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
        }
        .btn-glow {
            background: linear-gradient(135deg, #00D2FF 0%, #0077FE 100%);
            box-shadow: 0 0 22px rgba(0, 210, 255, 0.45);
            transition: all 0.25s ease-in-out;
        }
        .btn-glow:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 28px rgba(0, 210, 255, 0.75);
        }
        .text-glow {
            text-shadow: 0 0 12px rgba(0, 210, 255, 0.6);
        }
        .accordion-content {
            transition: max-height 0.3s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.3s ease;
        }