/* roulang page: index */
:root {
            --primary-navy: #0B192C;
            --primary-slate: #1E3E62;
            --accent-cyan: #00ADB5;
            --accent-orange: #FF6500;
            --bg-light: #F8FAFC;
            --text-main: #0F172A;
            --text-sub: #475569;
            --text-muted: #94A3B8;
        }
        html { scroll-behavior: smooth; }
        body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif; }
        .data-glow-border:hover {
            box-shadow: 0 10px 25px -5px rgba(0, 173, 181, 0.25);
            border-color: rgba(0, 173, 181, 0.6);
        }
        details summary::-webkit-details-marker { display: none; }
        details[open] summary svg { transform: rotate(180deg); }