/* roulang page: index */
:root {
            --bg-base: #0B0E14;
            --bg-surface: #121721;
            --bg-card: #1A2230;
            --color-neon: #00F298;
            --color-purple: #7B2CBF;
            --text-main: #F8FAFC;
            --text-muted: #94A3B8;
            --border-tech: rgba(0, 242, 152, 0.15);
        }
        * {
            box-sizing: border-box;
            scroll-behavior: smooth;
        }
        body {
            background-color: var(--bg-base);
            color: var(--text-main);
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            overflow-x: hidden;
        }
        .tech-grid-bg {
            background-image: radial-gradient(rgba(0, 242, 152, 0.08) 1px, transparent 1px);
            background-size: 28px 28px;
        }
        .neon-glow {
            text-shadow: 0 0 12px rgba(0, 242, 152, 0.45);
        }
        .border-glow {
            border: 1px solid var(--border-tech);
            box-shadow: 0 0 16px rgba(0, 242, 152, 0.04);
        }
        .border-glow:hover {
            border-color: rgba(0, 242, 152, 0.4);
            box-shadow: 0 0 20px rgba(0, 242, 152, 0.15);
        }
        .btn-neon {
            background: #00F298;
            color: #0B0E14;
            font-weight: 700;
            transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .btn-neon:hover {
            box-shadow: 0 0 20px rgba(0, 242, 152, 0.5);
            transform: translateY(-2px);
        }
        .badge-tag {
            background: rgba(0, 242, 152, 0.1);
            color: #00F298;
            border: 1px solid rgba(0, 242, 152, 0.3);
        }