:root{--bg:#f6f7f9;--panel:#fff;--text:#18202f;--muted:#697386;--line:#dfe4ea;--brand:#c5272d;--ok:#146c43}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:Arial,Microsoft YaHei,sans-serif}a{color:inherit;text-decoration:none}.shell{display:grid;grid-template-columns:220px 1fr;min-height:100vh}.sidebar{background:#1d2430;color:#fff;padding:24px 16px}.brand{font-size:18px;font-weight:700;margin-bottom:28px}.nav{display:grid;grid-gap:8px;gap:8px}.nav a{padding:10px 12px;border-radius:6px;color:#d6deeb}.nav a:hover{background:#2b3443;color:#fff}.main{padding:24px}.section-title{margin:0 0 16px;font-size:22px}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));grid-gap:12px;gap:12px}.card,.panel{background:var(--panel);border:1px solid var(--line);border-radius:8px;padding:16px}.metric-label{color:var(--muted);font-size:13px}.metric-value{margin-top:8px;font-size:26px;font-weight:700}.two-col{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));grid-gap:16px;gap:16px;margin-top:16px}table{width:100%;border-collapse:collapse;font-size:14px}td,th{border-bottom:1px solid var(--line);padding:10px 8px;text-align:left;vertical-align:top}th{color:var(--muted);font-weight:600;background:#fafbfc}.toolbar{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:12px}button,input,select{border:1px solid var(--line);border-radius:6px;padding:8px 10px;font:inherit;background:#fff}button{cursor:pointer;background:var(--brand);color:#fff;border-color:var(--brand)}.status-ok{color:var(--ok)}.muted{color:var(--muted)}@media (max-width:760px){.shell{grid-template-columns:1fr}.sidebar{position:static}}