:root {
  --bg: #f4f7fb; --card: #ffffff; --text: #1f2937; --muted: #6b7280;
  --line: #e5e7eb; --primary: #1d4ed8; --green: #16a34a; --amber: #d97706; --red: #dc2626;
}
* { box-sizing: border-box; }
body { margin: 0; font-family: Arial, "Microsoft YaHei", sans-serif; background: var(--bg); color: var(--text); }
.topbar { display: flex; justify-content: space-between; gap: 16px; align-items: center; padding: 20px; background: #0f172a; color: #fff; flex-wrap: wrap; }
.topbar h1 { margin: 0 0 6px; font-size: 28px; }
.topbar p { margin: 0; color: #cbd5e1; }
.top-actions { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
button, input, select, textarea { font: inherit; padding: 10px 12px; border-radius: 10px; border: 1px solid #cbd5e1; }
button, .btn { cursor: pointer; background: var(--primary); color: #fff; border: none; text-decoration: none; display: inline-block; }
button.secondary, .btn.secondary { background: #475569; }
button.outline, .btn.outline { background: #fff; color: var(--primary); border: 1px solid var(--primary); }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 16px; padding: 20px; }
.card { background: var(--card); border-radius: 18px; padding: 18px; box-shadow: 0 4px 20px rgba(15, 23, 42, 0.06); }
.card small { color: var(--muted); }
.card strong { display: block; font-size: 28px; margin-top: 8px; }
.tabs { display: flex; gap: 8px; padding: 0 20px 20px; flex-wrap: wrap; }
.tabs a { background: #e2e8f0; color: #0f172a; padding: 10px 14px; border-radius: 10px; text-decoration: none; }
.tabs a.active { background: var(--primary); color: #fff; }
main { padding: 0 20px 24px; }
.grid { display: grid; gap: 16px; }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; background: var(--card); border-radius: 18px; overflow: hidden; }
th, td { border-bottom: 1px solid var(--line); padding: 12px; text-align: left; vertical-align: top; }
th { background: #eff6ff; }
.badge { display: inline-block; padding: 4px 10px; border-radius: 999px; font-size: 12px; font-weight: 700; }
.green { background: #dcfce7; color: var(--green); }
.amber { background: #fef3c7; color: var(--amber); }
.red { background: #fee2e2; color: var(--red); }
.blue { background: #dbeafe; color: var(--primary); }
.gray { background: #e5e7eb; color: #475569; }
.form-card h3, .card h3 { margin-top: 0; }
.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px; }
.form-grid .full { grid-column: 1 / -1; }
label { display: flex; flex-direction: column; gap: 6px; font-size: 14px; }
textarea { min-height: 90px; resize: vertical; }
.actions { display: flex; gap: 8px; flex-wrap: wrap; }
.notice { color: var(--muted); font-size: 14px; }
.compact td, .compact th { padding: 8px 10px; font-size: 13px; }
.alert { padding: 12px 14px; border-radius: 12px; margin: 0 20px 16px; }
.alert.success { background:#ecfdf5; color:#047857; border:1px solid #a7f3d0; }
.alert.error { background:#fef2f2; color:#b91c1c; border:1px solid #fecaca; }
.slot-ok { border-left: 4px solid var(--green); }
.slot-busy { border-left: 4px solid var(--amber); }
@media (max-width: 720px) { .topbar { flex-direction: column; align-items: flex-start; } }