/* roulang page: index */
:root {
            --bg-deep: #070b19;
            --bg-elevated: #0f1a36;
            --primary-glow: #06b6d4;
            --primary-blue: #2563eb;
            --text-main: #f8fafc;
            --text-muted: #94a3b8;
            --border-glass: rgba(6, 182, 212, 0.22);
            --card-glass: rgba(15, 26, 54, 0.72);
        }

        html {
            scroll-behavior: smooth;
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: var(--bg-deep);
            color: var(--text-main);
        }

        .glass-panel {
            background: var(--card-glass);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-glass);
            box-shadow: 0 16px 36px -10px rgba(2, 6, 23, 0.85);
        }

        .glass-panel-hover {
            transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        }

        .glass-panel-hover:hover {
            border-color: rgba(56, 189, 248, 0.5);
            transform: translateY(-4px);
            box-shadow: 0 20px 40px -8px rgba(6, 182, 212, 0.25);
        }

        .btn-glow-primary {
            background: linear-gradient(135deg, #2563eb 0%, #06b6d4 100%);
            box-shadow: 0 0 24px rgba(6, 182, 212, 0.45);
            transition: all 0.3s ease;
        }

        .btn-glow-primary:hover {
            box-shadow: 0 0 34px rgba(56, 189, 248, 0.75);
            filter: brightness(1.1);
            transform: translateY(-1px);
        }

        .glow-line {
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(6, 182, 212, 0.6), transparent);
        }

        .text-gradient {
            background: linear-gradient(135deg, #ffffff 10%, #38bdf8 70%, #06b6d4 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        /* 隐藏滚动条但保留功能 */
        .no-scrollbar::-webkit-scrollbar {
            display: none;
        }
        .no-scrollbar {
            -ms-overflow-style: none;
            scrollbar-width: none;
        }