/* roulang page: index */
:root {
            --bg-dark: #090D16;
            --bg-card: #0F172A;
            --text-main: #F8FAFC;
            --text-muted: #94A3B8;
            --accent-green: #10B981;
            --accent-red: #F43F5E;
            --border-line: rgba(255, 255, 255, 0.08);
            --gold-gradient: linear-gradient(135deg, #F59E0B 0%, #D97706 50%, #78350F 100%);
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
            scroll-behavior: smooth;
        }
        body {
            font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
            background-color: var(--bg-dark);
            color: var(--text-main);
            line-height: 1.75;
            overflow-x: hidden;
        }
        .gold-border {
            border: 1px solid rgba(212, 175, 55, 0.35);
        }
        .gold-glow {
            box-shadow: 0 0 25px rgba(212, 175, 55, 0.15);
        }
        .card-obsidian {
            background-color: #0F172A;
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: all 0.25s ease-in-out;
        }
        .card-obsidian:hover {
            transform: translateY(-4px);
            border-color: rgba(16, 185, 129, 0.4);
            box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4);
        }
        .hero-banner {
            background-image: linear-gradient(180deg, rgba(9, 13, 22, 0.75) 0%, rgba(9, 13, 22, 0.95) 100%), url('/assets/images/c52527171a341bd1.webp');
            background-size: cover;
            background-position: center;
        }