/* roulang page: index */
:root {
            --bg-canvas: #0B0D12;
            --bg-panel: #141721;
            --primary: #00F298;
            --accent: #7B2FFE;
            --ice: #00D2FF;
            --text-main: #F8FAFC;
            --text-muted: #94A3B8;
            --border-dim: rgba(255, 255, 255, 0.08);
            --border-glow: rgba(0, 242, 152, 0.35);
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            background-color: var(--bg-canvas);
            color: var(--text-main);
            font-family: 'PingFang SC', 'HarmonyOS Sans SC', 'Microsoft YaHei', sans-serif;
            overflow-x: hidden;
        }
        body {
            line-height: 1.65;
            overflow-x: hidden;
            width: 100%;
        }
        .hud-border {
            border: 1px solid var(--border-dim);
            transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        }
        .hud-border:hover {
            border-color: var(--border-glow);
            box-shadow: 0 0 20px rgba(0, 242, 152, 0.12);
        }
        .glow-text-green {
            text-shadow: 0 0 12px rgba(0, 242, 152, 0.4);
        }
        .glow-text-purple {
            text-shadow: 0 0 12px rgba(123, 47, 254, 0.4);
        }
        .bg-grid-pattern {
            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);
            background-size: 40px 40px;
        }
        .pulse-dot {
            animation: pulseGlow 2s infinite;
        }
        @keyframes pulseGlow {
            0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(0, 242, 152, 0.7); }
            70% { transform: scale(1); box-shadow: 0 0 0 8px rgba(0, 242, 152, 0); }
            100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(0, 242, 152, 0); }
        }
        details summary::-webkit-details-marker {
            display:none;
        }