:root{--bg:#f5f7fb;--panel:#fff;--panel-strong:#111827;--line:#dce3ee;--line-strong:#c9d3e2;--text:#172033;--muted:#667085;--soft:#eef3f9;--accent:#1769e0;--accent-dark:#0e4fb0;--good:#0f9f6e;--warn:#d9822b;--shadow:0 18px 45px #14234614}*{box-sizing:border-box}html,body{background:var(--bg);min-height:100%;color:var(--text);margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Microsoft YaHei,sans-serif}button,input{font:inherit}.shell{grid-template-columns:336px minmax(0,1fr);min-height:100vh;display:grid}.sidebar{color:#fff;background:#101827;height:100vh;padding:28px;position:sticky;top:0;overflow:auto}.brand{align-items:center;gap:14px;margin-bottom:28px;display:flex}.brand-mark{background:#1e6eea;border:1px solid #fff3;border-radius:8px;place-items:center;width:44px;height:44px;font-size:14px;font-weight:800;display:grid}.brand h1,.brand p,.content-header h2,.content-header p,.table-title h3,.table-title span{margin:0}.brand 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