/* roulang page: index */
:root {
            --color-primary: #2563EB;
            --color-dark: #0F172A;
            --color-body: #334155;
            --color-sub: #64748B;
            --color-border: #E2E8F0;
            --color-bg: #F8FAFC;
        }
        body {
            font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: var(--color-bg);
            color: var(--color-body);
            overflow-x: hidden;
        }
        .custom-card-shadow {
            box-shadow: 0 4px 20px -2px rgba(15, 23, 42, 0.05);
        }
        .tech-badge {
            font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
        }
        .transition-fast {
            transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
        }
        /* 手风琴平滑展示 */
        details summary::-webkit-details-marker {
            display: none;
        }
        details[open] summary svg {
            transform: rotate(180deg);
        }