:root{
  --bg:#f4f6f9; --card:#fff; --ink:#1a2233; --muted:#6b7280;
  --brand:#0f6fbf; --brand2:#0b5aa5; --line:#e2e8f0;
  --danger:#d43b3b; --ok:#12805c; --warn:#c77700;
}
*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--ink);line-height:1.5}
a{color:var(--brand);text-decoration:none}
.topbar{background:var(--card);border-bottom:1px solid var(--line);padding:10px 16px;display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.brand{font-weight:700;color:var(--brand);white-space:nowrap}
.nav{display:flex;gap:4px;flex-wrap:wrap}
.nav a{padding:6px 10px;border-radius:8px;font-size:14px}
.nav a:hover{background:#eef4fb}
.userbox{margin-left:auto;display:flex;align-items:center;gap:10px;font-size:14px}
.container{max-width:1100px;margin:0 auto;padding:20px 16px}
.foot{text-align:center;color:var(--muted);font-size:12px;padding:24px 0}
h2{margin:0 0 16px}
h3{margin:16px 0 8px}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:16px;text-align:center}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:12px;margin-bottom:20px}
.card .num{font-size:28px;font-weight:700;color:var(--brand)}
.card .lbl{font-size:13px;color:var(--muted)}
.grid2{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:16px}
section{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:16px;margin-bottom:16px}
table{width:100%;border-collapse:collapse;font-size:14px}
th,td{padding:8px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
th{color:var(--muted);font-weight:600;font-size:12px;white-space:nowrap}
.table-wrap{overflow-x:auto}
.badge{padding:2px 8px;border-radius:20px;font-size:12px;font-weight:700}
.g-A{background:#e6f7ec;color:var(--ok)}
.g-B{background:#fff3e0;color:var(--warn)}
.g-C{background:#eef1f5;color:var(--muted)}
.btn{display:inline-block;background:var(--brand);color:#fff;border:none;padding:8px 14px;border-radius:8px;font-size:14px;cursor:pointer}
.btn:hover{background:var(--brand2)}
.btn-sm{padding:4px 8px;font-size:12px}
.btn-block{width:100%}
.filter{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px}
.filter input,.filter select{padding:8px;border:1px solid var(--line);border-radius:8px;font-size:14px;min-width:160px}
.alert{padding:10px 14px;border-radius:8px;margin:10px 0;font-size:14px;word-break:break-all}
.alert.error{background:#fdecec;color:var(--danger);border:1px solid #f5c6c6}
.muted{color:var(--muted);font-size:13px}
.ops{white-space:nowrap}
.login-body{display:flex;align-items:center;justify-content:center;min-height:100vh}
.login-card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:32px;width:100%;max-width:380px;box-shadow:0 8px 30px rgba(0,0,0,.06)}
.login-card h1{font-size:20px;text-align:center;margin:0 0 4px}
.login-card form{display:flex;flex-direction:column;gap:12px;margin-top:16px}
.login-card label{font-size:13px;color:var(--muted);display:flex;flex-direction:column;gap:4px}
.login-card input{padding:10px;border:1px solid var(--line);border-radius:8px;font-size:15px}
/* 手机自适应 */
@media (max-width:640px){
  .nav a{font-size:13px;padding:5px 8px}
  .cards{grid-template-columns:repeat(2,1fr)}
  .container{padding:12px 8px}
}