:root{--bg: #f6f7fb;--surface: #ffffff;--text: #1c2230;--muted: #667085;--border: #e0e4ee;--primary: #3b5bdb;--primary-hover: #3149b5;--danger: #d6455d;--danger-soft: #fdecef;--success-soft: #e8f7ee;--success-text: #1d7a46;--info-soft: #eef2ff;--shadow: 0 1px 3px rgba(16, 24, 40, .08), 0 1px 2px rgba(16, 24, 40, .04);--radius: 10px;--syn-keyword: #7c3aed;--syn-model: #b45309;--syn-number: #0e7490;--syn-ident: #1d4ed8;--syn-operator: #475569;--syn-invalid: #dc2626}*{box-sizing:border-box}body{margin:0;font-family:Segoe UI,system-ui,-apple-system,sans-serif;background:var(--bg);color:var(--text);font-size:15px}.app{min-height:100vh;display:flex;flex-direction:column}.main{flex:1;width:100%;max-width:1100px;margin:0 auto;padding:24px 20px 60px}.navbar{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:10px 20px;background:var(--surface);border-bottom:1px solid 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