:root { --bg:#f5f6f8; --panel:#fff; --text:#1f2937; --muted:#667085; --line:#d9dee7; --brand:#245b57; --danger:#b42318; }
* { box-sizing: border-box; }
body { margin:0; min-height:100vh; background:var(--bg); color:var(--text); font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif; }
a { color:var(--brand); text-decoration:none; }
.sidebar { position:fixed; inset:0 auto 0 0; width:220px; background:#172321; color:#fff; padding:20px; }
.brand strong { display:block; font-size:22px; }
.brand span { display:block; color:#c7d2d0; margin-top:4px; font-size:13px; }
nav { margin-top:26px; display:grid; gap:8px; }
nav a { color:#fff; padding:9px 10px; border-radius:6px; }
nav a:hover { background:#223633; }
.shell { margin-left:220px; padding:22px 28px 60px; }
.auth-shell { min-height:100vh; display:grid; place-items:center; padding:24px; }
.topbar { display:flex; justify-content:space-between; align-items:center; margin-bottom:20px; }
.account { display:flex; gap:14px; }
h1 { margin:0 0 18px; font-size:26px; }
h2 { margin:0 0 12px; font-size:18px; }
.grid { display:grid; grid-template-columns:repeat(auto-fit,minmax(260px,1fr)); gap:14px; }
.panel, .login-panel { background:var(--panel); border:1px solid var(--line); border-radius:8px; padding:18px; margin-bottom:16px; }
.narrow { max-width:560px; }
.login-panel { width:min(440px,100%); }
.login-panel h1 { font-size:34px; margin-bottom:4px; }
.notice { color:#7a4b00; background:#fff7e6; border-left:4px solid #f59e0b; padding:10px 12px; }
.message { background:#e7f6ec; border-left:4px solid #067647; padding:10px 12px; margin-bottom:14px; }
.errorlist { color:#b42318; background:#fff1f0; border-left:4px solid #b42318; padding:8px 12px; margin:6px 0; list-style-position:inside; }
.empty, .muted { color:var(--muted); }
form p { display:grid; gap:5px; }
input, textarea, select { width:100%; border:1px solid var(--line); border-radius:6px; padding:9px 10px; font:inherit; background:#fff; }
button, .button { display:inline-block; border:0; border-radius:6px; padding:9px 14px; background:var(--brand); color:#fff; font:inherit; cursor:pointer; }
.secondary { background:#667085; }
.danger { background:var(--danger); }
table { width:100%; border-collapse:collapse; background:#fff; border:1px solid var(--line); }
th, td { border-bottom:1px solid var(--line); padding:10px 12px; text-align:left; vertical-align:top; }
th { background:#eef2f2; }
.title-row { display:flex; justify-content:space-between; align-items:center; gap:14px; }
.search { display:flex; gap:8px; margin-bottom:14px; }
.link-panel { display:block; color:var(--text); }
@media (max-width: 760px) {
  .sidebar { position:static; width:auto; }
  .shell { margin-left:0; padding:16px; }
  .topbar, .title-row, .account { align-items:flex-start; flex-direction:column; }
  table { display:block; overflow-x:auto; }
}