:root{--primary: #1a252f;--edge: #27ae60;--secondary: #2980b9;--accent: #e67e22;--border: #dee2e6;--text: #2c3e50;--sem-green-bg: #e8f8f5;--sem-green-fg: #1e8449;--sem-blue-bg: #eaf2fb;--sem-blue-fg: #1f618d;--sem-orange-bg: #fdf2e9;--sem-orange-fg: #b9651a;--sem-gray-bg: #eef1f4;--sem-gray-fg: #566066;--grad-brand: linear-gradient(135deg, var(--edge), #1f618d);--bg: #ffffff;--bg-muted: #f4f7f6;--bg-dotted: radial-gradient(#e9ecef 1px, transparent 1px) 0 0 / 24px 24px;--radius-card: 16px;--radius-pill: 20px;--radius-sm: 8px;--shadow-card: 0 2px 6px rgba(0, 0, 0, .03);--shadow-card-hover: 0 4px 12px rgba(0, 0, 0, .06);--font-sans: "Segoe UI", "Microsoft YaHei", Roboto, system-ui, -apple-system, sans-serif;--font-mono: "Consolas", "SF Mono", "Cascadia Mono", monospace;--dark-bg: #0d1117;--dark-text: #e6edf3}*{margin:0;padding:0;box-sizing:border-box}body{font-family:var(--font-sans);line-height:1.7;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.ds-card{display:block;background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);padding:.9rem 1.2rem;margin:.6rem 0;text-decoration:none;color:var(--text);box-shadow:var(--shadow-card);transition:.15s}.ds-card:hover{border-color:var(--edge);transform:translateY(-1px);box-shadow:var(--shadow-card-hover)}.ds-tag{display:inline-block;padding:1px 9px;border-radius:var(--radius-pill);font-size:.7rem;font-weight:600;margin-left:6px;vertical-align:middle}.ds-note{background:#eff7ff;border-left:5px solid var(--secondary);border-radius:14px;padding:.9rem 1.2rem;margin:1rem 0;font-size:.88rem}html,body,#root{height:100%}body{background-color:var(--bg);background-image:var(--bg-dotted)}