:root {
  --bg: #f5f7fb;
  --card: #ffffff;
  --line: #e7ebf3;
  --text: #1f2a44;
  --muted: #6f7b93;
  --primary: #2f6bff;
  --danger: #e11d48;
}
* { box-sizing: border-box; }
body { margin: 0; font-family: "Microsoft YaHei", sans-serif; background: var(--bg); color: var(--text); }
.container { display: flex; min-height: 100vh; }
.sidebar { width: 220px; background: #101828; color: #fff; padding: 20px; display: flex; flex-direction: column; gap: 12px; }
.sidebar h1 { font-size: 22px; margin: 0 0 8px; }
.sidebar button { border: 0; border-radius: 10px; padding: 12px; background: #1f2937; color: #fff; cursor: pointer; text-align: left; }
.sidebar button:hover { background: #374151; }
.main { flex: 1; padding: 24px; }
.card { background: var(--card); border-radius: 16px; padding: 20px; box-shadow: 0 6px 24px rgba(16,24,40,.06); }
.nested-card { background: #f8fafc; border: 1px solid var(--line); box-shadow: none; }
.login-card { max-width: 360px; margin: 60px auto; display: flex; flex-direction: column; gap: 12px; }
input, select { padding: 12px 14px; border: 1px solid var(--line); border-radius: 10px; font-size: 14px; width: 100%; }
button { padding: 11px 14px; border: 0; border-radius: 10px; background: var(--primary); color: white; cursor: pointer; }
.hidden { display: none; }
.muted { color: var(--muted); font-size: 12px; }
.topbar { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 16px; }
.kpi { background: var(--card); border-radius: 14px; padding: 18px; box-shadow: 0 4px 16px rgba(16,24,40,.05); }
.kpi .label { color: var(--muted); font-size: 13px; }
.kpi .value { font-size: 28px; font-weight: 700; margin-top: 8px; }
.table-wrap { overflow: auto; }
table { width: 100%; border-collapse: collapse; background: var(--card); border-radius: 14px; overflow: hidden; }
th, td { padding: 12px 14px; border-bottom: 1px solid var(--line); text-align: left; font-size: 14px; vertical-align: middle; }
th { background: #f8fafc; }
.panel { display: grid; gap: 16px; }
.form-card { display: grid; gap: 12px; }
.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 12px; }
.inline-actions { display: flex; gap: 10px; flex-wrap: wrap; }
.actions-cell { white-space: nowrap; }
.mini-btn { padding: 8px 12px; font-size: 12px; margin-right: 8px; }
.danger-btn { background: var(--danger); }
.ghost-btn { background: #e5e7eb; color: #111827; }
.permission-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 10px; }
.perm-item { display: flex; align-items: center; gap: 8px; background: #f8fafc; border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; }
.perm-item input { width: auto; margin: 0; }