/* roulang page: index */
:root {
            --bg-deep: #0B1120;
            --bg-card: rgba(15, 23, 42, 0.72);
            --border-glass: rgba(148, 163, 184, 0.12);
            --border-hover: rgba(14, 165, 233, 0.45);
            --color-primary: #0EA5E9;
            --color-emerald: #10B981;
            --text-main: #F1F5F9;
            --text-muted: #94A3B8;
        }

        body {
            background-color: var(--bg-deep);
            color: var(--text-main);
            overflow-x: hidden;
            font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
        }

        .glass-panel {
            background: var(--bg-card);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-glass);
            transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        }

        .glass-panel:hover {
            border-color: var(--border-hover);
            box-shadow: 0 10px 30px -10px rgba(14, 165, 233, 0.15);
        }

        .btn-glow-primary {
            background: linear-gradient(135deg, #0EA5E9 0%, #0284C7 100%);
            box-shadow: 0 0 20px rgba(14, 165, 233, 0.35);
            transition: all 0.25s ease;
        }

        .btn-glow-primary:hover {
            background: linear-gradient(135deg, #38BDF8 0%, #0EA5E9 100%);
            box-shadow: 0 0 30px rgba(14, 165, 233, 0.6);
            transform: translateY(-1px);
        }

        .btn-glass-secondary {
            background: rgba(30, 41, 59, 0.6);
            border: 1px solid rgba(148, 163, 184, 0.2);
            transition: all 0.2s ease;
        }

        .btn-glass-secondary:hover {
            background: rgba(51, 65, 85, 0.8);
            border-color: var(--color-primary);
            color: #FFFFFF;
        }

        .glow-dot {
            box-shadow: 0 0 8px #10B981;
        }

        .accordion-content {
            transition: max-height 0.35s ease-out, opacity 0.3s ease-out;
            max-height: 0;
            opacity: 0;
            overflow: hidden;
        }

        .accordion-content.active {
            max-height: 500px;
            opacity: 1;
        }

        input::placeholder, select::placeholder {
            color: #64748B;
        }