:root {
  --ink: #18212f;
  --muted: #687386;
  --line: #e3e8ef;
  --paper: #ffffff;
  --canvas: #f3f6f9;
  --teal: #087f73;
  --teal-dark: #05665d;
  --green: #0d946d;
  --orange: #d8671d;
  --red: #bc2c2c;
  font-family: Inter, "Microsoft YaHei", "PingFang SC", system-ui, sans-serif;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--canvas); color: var(--ink); }
button, input { font: inherit; }
button, .button {
  border: 1px solid var(--line); border-radius: 9px; background: #fff; color: var(--ink);
  padding: 9px 14px; cursor: pointer; text-decoration: none; display: inline-flex;
}
button:hover, .button:hover { border-color: #9aa8b9; }
.primary { background: var(--teal); border-color: var(--teal); color: #fff; }
.primary:hover { background: var(--teal-dark); border-color: var(--teal-dark); }
.ghost { background: transparent; color: #fff; border-color: rgba(255,255,255,.4); }
.topbar {
  background: #121d27; color: #fff; display: flex; justify-content: space-between; align-items: center;
  padding: 24px max(24px, calc((100vw - 1320px) / 2)); border-bottom: 4px solid var(--teal);
}
h1, h2, h3, p { margin-top: 0; }
.topbar h1 { margin: 4px 0 0; font-size: 25px; }
.eyebrow { color: #79cabb; font-size: 12px; letter-spacing: .13em; font-weight: 700; }
.page { max-width: 1320px; margin: 28px auto 60px; padding: 0 24px; }
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 18px; }
.stats article { background: var(--paper); border: 1px solid var(--line); border-radius: 14px; padding: 20px; }
.stats span { color: var(--muted); display: block; font-size: 14px; }
.stats strong { display: block; font-size: 32px; margin-top: 8px; }
.green { color: var(--green); }
.panel { background: var(--paper); border: 1px solid var(--line); border-radius: 14px; padding: 22px; margin-bottom: 18px; }
.panel-title { display: flex; justify-content: space-between; align-items: center; margin-bottom: 18px; }
.panel-title h2 { margin: 3px 0 0; font-size: 20px; }
details { position: relative; }
summary { list-style: none; cursor: pointer; }
summary::-webkit-details-marker { display: none; }
.popover {
  position: absolute; right: 0; top: calc(100% + 8px); min-width: 280px; z-index: 10;
  background: white; border: 1px solid var(--line); border-radius: 12px; padding: 16px;
  box-shadow: 0 14px 35px rgba(21, 35, 52, .15);
}
.stack { display: grid; gap: 13px; }
label { color: var(--muted); display: grid; gap: 6px; font-size: 13px; }
input {
  width: 100%; border: 1px solid #cbd3dd; border-radius: 8px; padding: 10px 11px;
  background: #fff; color: var(--ink);
}
.tenant-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.tenant-card { border: 1px solid var(--line); border-radius: 12px; padding: 18px; }
.row { display: flex; align-items: center; gap: 12px; }
.between { justify-content: space-between; }
.tenant-card h3 { margin: 8px 0 7px; }
.tenant-card p { color: var(--muted); font-size: 14px; }
.actions { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 15px; }
.badge { border-radius: 99px; padding: 3px 8px; background: #eef2f6; color: #4c5869; font-size: 11px; }
.badge.active, .badge.succeeded { background: #e2f5ee; color: #087154; }
.badge.pending, .badge.delivered { background: #fff0dd; color: #9b501b; }
.badge.revoked, .badge.failed, .badge.suspended { background: #fbe4e4; color: #9e2525; }
.mono, code { font-family: ui-monospace, "Cascadia Code", monospace; }
.device-list { border-top: 1px solid var(--line); padding-top: 9px; }
.device { display: flex; align-items: center; gap: 10px; padding: 9px 3px; border-bottom: 1px solid #eef1f4; }
.device:last-child { border-bottom: 0; }
.device small { display: block; color: var(--muted); margin-top: 3px; }
.grow { flex: 1; min-width: 0; }
.dot { width: 9px; height: 9px; border-radius: 50%; background: #aeb7c4; }
.dot.online { background: #18a779; box-shadow: 0 0 0 4px #dff6ee; }
.more { color: var(--teal); font-size: 13px; }
.command-menu { min-width: 140px; display: grid; gap: 6px; }
.command-menu button { width: 100%; justify-content: center; }
.danger-button { color: var(--red); }
.warning { color: var(--orange) !important; }
.empty { color: var(--muted); text-align: center; padding: 30px 10px; }
.empty.compact { padding: 13px; }
.two-column { display: grid; grid-template-columns: 1.15fr .85fr; gap: 18px; }
.table-wrap { overflow: auto; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { border-bottom: 1px solid var(--line); padding: 10px 8px; text-align: left; }
th { color: var(--muted); font-weight: 600; }
.audit-list { max-height: 360px; overflow: auto; }
.audit-list > div { display: grid; grid-template-columns: 115px 1fr 100px; gap: 8px; padding: 9px 0; border-bottom: 1px solid var(--line); font-size: 12px; }
.audit-list time, .audit-list span { color: var(--muted); }
.alert, .activation-banner { border-radius: 12px; padding: 14px 16px; margin-bottom: 16px; }
.alert.success { color: #087154; background: #e2f5ee; border: 1px solid #bce9d9; }
.alert.danger { color: #992626; background: #fdeaea; border: 1px solid #f2c5c5; }
.activation-banner {
  display: flex; justify-content: space-between; align-items: center; gap: 20px;
  background: #fff7e8; border: 1px solid #f1d394;
}
.activation-banner p { color: #71552b; margin: 4px 0 0; }
.activation-banner code { background: #fff; padding: 10px 14px; border-radius: 8px; border: 1px dashed #c39139; }
.login-page { min-height: 100vh; display: grid; place-items: center; padding: 24px; background: #101a24; }
.login-card { width: min(440px, 100%); background: #fff; border-radius: 18px; padding: 34px; box-shadow: 0 24px 70px rgba(0,0,0,.25); }
.login-card h1 { font-size: 24px; margin: 18px 0 8px; }
.brand-mark { display: inline-block; background: var(--teal); color: #fff; padding: 7px 10px; border-radius: 7px; font-weight: 700; }
.muted { color: var(--muted); }
@media (max-width: 850px) {
  .stats { grid-template-columns: repeat(2, 1fr); }
  .tenant-grid, .two-column { grid-template-columns: 1fr; }
}
@media (max-width: 520px) {
  .page { padding: 0 12px; margin-top: 16px; }
  .topbar { padding: 18px 16px; }
  .topbar h1 { font-size: 20px; }
  .stats { gap: 10px; }
  .stats article { padding: 14px; }
  .stats strong { font-size: 26px; }
  .panel { padding: 15px; }
  .activation-banner { align-items: stretch; flex-direction: column; }
  .activation-banner code { overflow-wrap: anywhere; }
}