:root {
  --primary: #4f46e5;
  --primary-dark: #4338ca;
  --danger: #dc2626;
  --success: #16a34a;
  --bg: #f1f5f9;
  --card: #ffffff;
  --text: #0f172a;
  --text-2: #64748b;
  --border: #e2e8f0;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}
a { color: var(--primary); text-decoration: none; }
.btn {
  display: inline-block; padding: 8px 16px; border: none; border-radius: 6px;
  cursor: pointer; font-size: 14px; background: var(--primary); color: #fff;
  transition: background .15s;
}
.btn:hover { background: var(--primary-dark); }
.btn-sm { padding: 4px 10px; font-size: 12px; }
.btn-danger { background: var(--danger); }
.btn-danger:hover { background: #b91c1c; }
.btn-outline { background: transparent; color: var(--primary); border: 1px solid var(--primary); }
.btn-outline:hover { background: #eef2ff; }
.btn-block { width: 100%; }
input, select, textarea {
  width: 100%; padding: 10px 12px; border: 1px solid var(--border); border-radius: 6px;
  font-size: 14px; background: #fff; color: var(--text);
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--primary); outline-offset: -1px; }
label { display: block; font-size: 13px; color: var(--text-2); margin-bottom: 6px; }
.field { margin-bottom: 16px; }
.form-row { display: flex; gap: 12px; }
.form-row > div { flex: 1; }
.card {
  background: var(--card); border: 1px solid var(--border); border-radius: 10px;
  padding: 20px; margin-bottom: 16px;
}
.card h3 { font-size: 15px; margin-bottom: 12px; }
.table { width: 100%; border-collapse: collapse; font-size: 13px; }
.table th, .table td { padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--border); }
.table th { color: var(--text-2); font-weight: 500; background: #f8fafc; }
.table tr:hover td { background: #f8fafc; }
.badge { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 12px; }
.badge-green { background: #dcfce7; color: var(--success); }
.badge-red { background: #fee2e2; color: var(--danger); }
.badge-gray { background: #f1f5f9; color: var(--text-2); }
.badge-blue { background: #dbeafe; color: #2563eb; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 12px; word-break: break-all; }
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 12px; margin-bottom: 16px; }
.stat { background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 16px; }
.stat .num { font-size: 24px; font-weight: 600; color: var(--primary); }
.stat .lbl { font-size: 12px; color: var(--text-2); margin-top: 4px; }
.toast {
  position: fixed; top: 20px; left: 50%; transform: translateX(-50%);
  background: var(--text); color: #fff; padding: 10px 20px; border-radius: 8px;
  font-size: 14px; z-index: 999; opacity: 0; transition: opacity .3s; pointer-events: none;
}
.toast.show { opacity: 1; }
.toast.error { background: var(--danger); }
.empty { text-align: center; color: var(--text-2); padding: 30px 0; font-size: 14px; }
.modal-mask {
  position: fixed; inset: 0; background: rgba(15, 23, 42, .5); display: none;
  align-items: center; justify-content: center; z-index: 100;
}
.modal-mask.show { display: flex; }
.modal { background: #fff; border-radius: 12px; padding: 24px; width: 440px; max-width: 92vw; box-shadow: 0 20px 60px rgba(0,0,0,.2); }
.modal h3 { margin-bottom: 16px; font-size: 16px; }
.modal .modal-body { font-size: 14px; color: var(--text); line-height: 1.6; }
.modal .modal-body input { margin-top: 8px; }
.modal .btn-row { display: flex; gap: 10px; justify-content: flex-end; margin-top: 20px; }