/* roulang page: index */
:root {
            --bg-dark: #0A0C10;
            --bg-card: #161920;
            --accent-glow: rgba(0, 242, 254, 0.15);
            --border-glow: rgba(0, 242, 254, 0.4);
        }
        html {
            scroll-behavior: smooth;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
        }
        body {
            background-color: #F8F9FA;
            color: #1F2937;
            overflow-x: hidden;
        }
        .glow-hover:hover {
            box-shadow: 0 8px 24px var(--accent-glow);
            border-color: var(--border-glow);
            transform: translateY(-2px);
        }
        .code-font {
            font-family: "JetBrains Mono", Consolas, Monaco, monospace;
        }
        .accordion-content {
            transition: max-height 0.3s ease-out, opacity 0.25s ease-out;
            max-height: 0;
            opacity: 0;
            overflow: hidden;
        }
        .accordion-content.active {
            max-height: 280px;
            opacity: 1;
        }