/* roulang page: index */
:root {
            --bg-base: #0B0F17;
            --bg-card: #131B26;
            --bg-hover: #1B2636;
            --text-main: #F8FAFC;
            --text-muted: #94A3B8;
            --accent-green: #00F279;
            --accent-cyan: #00D2FF;
            --accent-amber: #FF9F1C;
            --border-line: rgba(51, 65, 85, 0.6);
        }
        html {
            scroll-behavior: smooth;
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background-color: var(--bg-base);
            color: var(--text-main);
        }
        body {
            line-height: 1.8;
            letter-spacing: 0.01em;
            overflow-x: hidden;
        }
        .glow-green {
            box-shadow: 0 0 25px rgba(0, 242, 121, 0.25);
        }
        .glow-green-sm {
            box-shadow: 0 0 12px rgba(0, 242, 121, 0.2);
        }
        .glow-card:hover {
            border-color: rgba(0, 242, 121, 0.4);
            transform: translateY(-4px);
            box-shadow: 0 12px 30px rgba(0, 0, 0, 0.5), 0 0 15px rgba(0, 242, 121, 0.15);
        }
        .pulse-indicator {
            animation: pulse-ring 2s cubic-bezier(0.215, 0.61, 0.355, 1) infinite;
        }
        @keyframes pulse-ring {
            0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(0, 242, 121, 0.7); }
            70% { transform: scale(1); box-shadow: 0 0 0 8px rgba(0, 242, 121, 0); }
            100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(0, 242, 121, 0); }
        }