/* roulang page: index */
:root {
            --bg-obsidian: #0A0D14;
            --bg-darker: #06080C;
            --bg-card: #121722;
            --primary-purple: #7928CA;
            --primary-volt: #00F298;
            --text-main: #FFFFFF;
            --text-desc: #94A3B8;
            --border-glow: rgba(255, 255, 255, 0.08);
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
            scroll-behavior: smooth;
        }
        body {
            background-color: var(--bg-obsidian);
            color: var(--text-main);
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
            overflow-x: hidden;
            line-height: 1.6;
        }
        .cyber-grid {
            background-image: linear-gradient(rgba(121, 40, 202, 0.05) 1px, transparent 1px),
                              linear-gradient(90deg, rgba(121, 40, 202, 0.05) 1px, transparent 1px);
            background-size: 32px 32px;
        }
        .neon-border {
            border: 1px solid var(--border-glow);
            transition: all 0.25s ease-in-out;
        }
        .neon-border:hover {
            border-color: rgba(0, 242, 152, 0.35);
            box-shadow: 0 0 24px rgba(121, 40, 202, 0.25);
            transform: translateY(-2px);
        }
        .btn-neon {
            background: linear-gradient(135deg, #7928CA 0%, #6C5CE7 100%);
            box-shadow: 0 0 16px rgba(121, 40, 202, 0.4);
            transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .btn-neon:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 24px rgba(121, 40, 202, 0.65);
        }
        .btn-neon:active {
            transform: translateY(0);
        }
        .volt-badge {
            background: rgba(0, 242, 152, 0.1);
            color: #00F298;
            border: 1px solid rgba(0, 242, 152, 0.3);
        }
        .pulse-dot {
            width: 8px;
            height: 8px;
            background-color: #00F298;
            border-radius: 50%;
            box-shadow: 0 0 8px #00F298;
            animation: pulse-glow 2s infinite;
        }
        @keyframes pulse-glow {
            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 6px rgba(0, 242, 152, 0); }
            100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(0, 242, 152, 0); }
        }