:root {
  --g: #24ae65;
  --g2: #1a8f52;
  --side: #0f1b14;
  --bg: #f3f6f4;
  --text: #1f2a24;
  --muted: #6b7c72;
  --card: #fff;
  --line: #e8eee9;
  --danger: #c0392b;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
}
a { color: var(--g); text-decoration: none; }
.layout { display: flex; min-height: 100vh; }
.sidebar {
  width: 220px;
  background: linear-gradient(180deg, #0f1b14, #15261c);
  color: #b7c8bc;
  padding: 16px 10px;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow: auto;
}
.brand { display: flex; gap: 10px; align-items: center; padding: 8px 10px 18px; color: #fff; }
.brand .logo {
  width: 36px; height: 36px; border-radius: 10px;
  background: linear-gradient(135deg, var(--g), var(--g2));
  display: grid; place-items: center; font-weight: 800;
}
.brand b { display: block; font-size: 16px; }
.brand span { font-size: 11px; color: #8aa294; }
.menu a {
  display: block; padding: 10px 12px; border-radius: 10px; color: #b7c8bc; margin-bottom: 3px; font-size: 14px;
}
.menu a:hover { background: rgba(255,255,255,.05); color: #fff; }
.menu a.active {
  background: linear-gradient(90deg, var(--g), var(--g2)); color: #fff;
}
.menu .group { margin: 12px 10px 6px; font-size: 11px; color: #7a8f83; }
.main { flex: 1; min-width: 0; }
.topbar {
  height: 56px; background: rgba(255,255,255,.92); border-bottom: 1px solid var(--line);
  display: flex; align-items: center; justify-content: space-between; padding: 0 20px;
  position: sticky; top: 0; z-index: 10;
}
.topbar .title { font-weight: 650; }
.content { padding: 18px 20px 32px; }
.card {
  background: var(--card); border-radius: 14px; padding: 18px;
  box-shadow: 0 8px 24px rgba(15,40,28,.04);
}
.page-title { font-size: 20px; font-weight: 700; margin: 0 0 14px; }
.kpi {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-bottom: 16px;
}
.kpi .item {
  background: #fff; border-radius: 12px; padding: 14px;
  box-shadow: 0 6px 18px rgba(15,40,28,.04);
}
.kpi .label { color: var(--muted); font-size: 12px; }
.kpi .val { font-size: 22px; font-weight: 700; margin-top: 6px; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { padding: 10px 8px; border-bottom: 1px solid var(--line); text-align: left; }
th { color: var(--muted); font-weight: 600; }
.btn {
  display: inline-block; border: 0; border-radius: 8px; padding: 8px 14px;
  background: var(--g); color: #fff; cursor: pointer; font-size: 13px;
}
.btn:hover { filter: brightness(.97); }
.btn.gray { background: #e8eee9; color: #334; }
.btn.danger { background: var(--danger); }
.btn.sm { padding: 5px 10px; font-size: 12px; }
.btn.outline { background: #fff; color: var(--g); border: 1px solid var(--g); }
input, select, textarea {
  width: 100%; border: 1px solid #d9e4dc; border-radius: 8px; padding: 8px 10px; font-size: 13px;
}
label { display: block; font-size: 13px; margin: 10px 0 6px; color: #3d4f44; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 14px; max-width: 820px; }
.form-grid .full { grid-column: 1 / -1; }
.toolbar { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 12px; align-items: center; }
.toolbar input, .toolbar select { width: auto; min-width: 140px; }
.flash {
  padding: 10px 12px; border-radius: 8px; margin-bottom: 12px; font-size: 13px;
}
.flash.ok { background: #e8f7ef; color: #1a7a4a; }
.flash.err { background: #fdecea; color: var(--danger); }
.tag { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 12px; background: #eef5f0; }
.tag.ok { background: #dff5e8; color: #1a7a4a; }
.tag.warn { background: #fff4e0; color: #b36b00; }
.tag.off { background: #eee; color: #666; }
.login-page {
  min-height: 100vh; display: grid; place-items: center;
  background: linear-gradient(160deg, #0b1510, #132018 55%, #0d1a13);
}
.login-box {
  width: min(400px, 92vw); background: #fff; border-radius: 16px; padding: 28px;
}
.login-box h1 { margin: 0 0 6px; font-size: 22px; }
.login-box p { color: var(--muted); margin: 0 0 18px; font-size: 13px; }
.muted { color: var(--muted); font-size: 12px; }
.pager { margin-top: 12px; display: flex; gap: 8px; justify-content: flex-end; align-items: center; }
@media (max-width: 900px) {
  .kpi { grid-template-columns: 1fr 1fr; }
  .sidebar { display: none; }
  .form-grid { grid-template-columns: 1fr; }
}