/* roulang page: index */
:root {
            --bg-deep: #080C14;
            --bg-surface: #0E1624;
            --accent-cyan: #00D2B4;
            --accent-glow: rgba(0, 210, 180, 0.15);
            --border-line: rgba(255, 255, 255, 0.08);
            --text-main: #E2E8F0;
            --text-muted: #94A3B8;
        }

        body {
            background-color: var(--bg-deep);
            color: var(--text-main);
            font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
            line-height: 1.7;
            overflow-x: hidden;
        }

        .tech-grid {
            background-size: 32px 32px;
            background-image: 
                linear-gradient(to right, rgba(255, 255, 255, 0.03) 1px, transparent 1px),
                linear-gradient(to bottom, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
        }

        .glow-card {
            border: 1px solid var(--border-line);
            background: linear-gradient(180deg, rgba(20, 29, 46, 0.6) 0%, rgba(11, 17, 28, 0.8) 100%);
            transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
        }

        .glow-card:hover {
            border-color: rgba(0, 210, 180, 0.38);
            transform: translateY(-3px);
            box-shadow: 0 12px 32px -8px var(--accent-glow);
        }

        .badge-pulse::before {
            content: '';
            display: inline-block;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background-color: #00D2B4;
            margin-right: 6px;
            box-shadow: 0 0 10px #00D2B4;
            animation: pulse-dot 2s infinite ease-in-out;
        }

        @keyframes pulse-dot {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.4; transform: scale(0.8); }
        }

        .section-separator {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            border-bottom: 1px solid rgba(0, 0, 0, 0.4);
        }

        /* 隐藏原生数字输入箭头 */
        input::-webkit-outer-spin-button,
        input::-webkit-inner-spin-button {
            -webkit-appearance: none;
            margin: 0;
        }