/* roulang page: index */
:root {
            --bg-base: #080D1A;
            --bg-surface: #0D162B;
            --bg-deep: #040814;
            --cyan-accent: #00F0FF;
            --blue-accent: #2563EB;
            --card-glass: rgba(15, 23, 42, 0.75);
            --card-border: rgba(0, 240, 255, 0.16);
            --card-border-hover: rgba(0, 240, 255, 0.45);
        }

        body {
            background-color: var(--bg-base);
            color: #F8FAFC;
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
            line-height: 1.75;
            overflow-x: hidden;
        }

        .glass-panel {
            background: var(--card-glass);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--card-border);
            box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08), 0 10px 30px rgba(0, 0, 0, 0.4);
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .glass-panel:hover {
            border-color: var(--card-border-hover);
            box-shadow: inset 0 1px 0 rgba(0, 240, 255, 0.2), 0 16px 40px rgba(0, 0, 0, 0.6), 0 0 20px rgba(0, 240, 255, 0.12);
            transform: translateY(-2px);
        }

        .btn-glow {
            background: linear-gradient(135deg, #00F0FF 0%, #2563EB 100%);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.35);
            transition: all 0.25s ease-in-out;
        }

        .btn-glow:hover {
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.6);
            transform: translateY(-2px);
        }

        .btn-glow:active {
            transform: scale(0.98);
        }

        .btn-ghost {
            background: rgba(15, 23, 42, 0.8);
            border: 1px solid rgba(0, 240, 255, 0.3);
            transition: all 0.25s ease-in-out;
        }

        .btn-ghost:hover {
            background: rgba(0, 240, 255, 0.12);
            border-color: #00F0FF;
            color: #00F0FF;
        }

        .bg-grid-tech {
            background-size: 40px 40px;
            background-image: 
                linear-gradient(to right, rgba(0, 240, 255, 0.04) 1px, transparent 1px),
                linear-gradient(to bottom, rgba(0, 240, 255, 0.04) 1px, transparent 1px);
        }

        .tech-gradient-text {
            background: linear-gradient(90deg, #FFFFFF 20%, #00F0FF 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        /* 移动端汉堡条动画 */
        .drawer-open {
            transform: translateX(0%) !important;
        }