:root{--bg:#f5f7fb;--panel:#ffffff;--text:#172033;--muted:#667085;--line:#dbe2ee;--brand:#1267b3;--brand-dark:#0d4f89;--danger:#c24135;--ok:#177245;--warn:#a86600;--radius:8px}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:Arial,Helvetica,sans-serif;font-size:14px}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}.app-shell{min-height:100vh;display:grid;grid-template-columns:260px minmax(0,1fr)}.sidebar{background:#ffffff;border-right:1px solid var(--line);padding:18px 14px;position:-webkit-sticky;position:sticky;top:0;height:100vh;overflow:auto}.brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:700;padding:8px 8px 18px;border-bottom:1px solid var(--line)}.brand-mark{width:34px;height:34px;border-radius:8px;background:var(--brand);color:white;display:grid;place-items:center}.nav-section{margin-top:16px}.nav-title{color:var(--muted);font-size:12px;text-transform:uppercase;margin:16px 8px 8px}.nav-link{display:flex;align-items:center;gap:8px;min-height:36px;border-radius:6px;padding:8px 10px;color:#25324a}.nav-link.active,.nav-link:hover{background:#e8f2fc;color:var(--brand-dark)}.main{min-width:0}.topbar{height:58px;background:white;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 22px;position:-webkit-sticky;position:sticky;top:0;z-index:5}.content{padding:24px}.page-title{margin:0 0 18px;font-size:24px}.panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:18px}.toolbar{display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;margin-bottom:14px}.btn,.toolbar{align-items:center}.btn{border:1px solid var(--line);border-radius:6px;min-height:36px;padding:8px 12px;background:white;color:var(--text);cursor:pointer;display:inline-flex;justify-content:center;gap:8px}.btn.primary{background:var(--brand);border-color:var(--brand);color:white}.btn.danger{background:var(--danger);border-color:var(--danger);color:white}.btn.ghost{background:transparent}.field{display:grid;grid-gap:6px;gap:6px;margin-bottom:12px}.field label{color:#344054;font-weight:600}.input,.select,.textarea{width:100%;min-height:38px;border:1px solid var(--line);border-radius:6px;padding:8px 10px;background:white}.textarea{min-height:96px;resize:vertical}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));grid-gap:14px;gap:14px}.table-wrap{overflow-x:auto}table{width:100%;border-collapse:collapse}td,th{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line);vertical-align:top}th{color:#344054;background:#f8fafc;font-weight:700}.badge{display:inline-flex;border-radius:999px;padding:3px 8px;font-size:12px;background:#eef2f7}.badge.ok{background:#e7f6ef;color:var(--ok)}.badge.warn{background:#fff4df;color:var(--warn)}.muted{color:var(--muted)}.login-page{min-height:100vh;display:grid;place-items:center;padding:24px}.login-box{width:min(420px,100%);background:white;border:1px solid var(--line);border-radius:var(--radius);padding:24px}.notice{border:1px solid #f3d08a;background:#fff8e8;color:#7a4b00;border-radius:6px;padding:10px 12px;margin-bottom:14px}@media (max-width:860px){.app-shell{grid-template-columns:1fr}.sidebar{position:static;height:auto}}