:root {
  --bg0: #0f1419;
  --bg1: #1a2332;
  --bg2: #243044;
  --line: #3a4a63;
  --text: #e8eef7;
  --muted: #8fa3bf;
  --accent: #3db8a0;
  --danger: #e06c75;
  --ok: #6bcb8b;
  --radius: 10px;
  --font: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}
* { box-sizing: border-box; }
html, body {
  margin: 0; min-height: 100%;
  font-family: var(--font);
  color: var(--text);
  background:
    radial-gradient(900px 480px at 8% -8%, #1f3d4a 0%, transparent 55%),
    linear-gradient(165deg, var(--bg0), #121820 60%, #0c1016);
}
.shell { display: grid; grid-template-columns: 200px 1fr; min-height: 100vh; }
.nav {
  padding: 1.25rem .85rem;
  border-right: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg1) 90%, transparent);
  display: flex; flex-direction: column; gap: .35rem;
}
.nav-brand {
  font-weight: 750; letter-spacing: .06em; color: var(--accent);
  font-size: 1.15rem; margin: .2rem .4rem 1rem;
}
.nav button, .nav-link {
  text-align: left; border: 0; background: transparent; color: var(--muted);
  padding: .65rem .75rem; border-radius: 8px; cursor: pointer; text-decoration: none;
  font: inherit;
}
.nav button:hover, .nav-link:hover { background: var(--bg2); color: var(--text); }
.nav button.active { background: color-mix(in srgb, var(--accent) 22%, var(--bg2)); color: var(--text); }
.nav-link { margin-top: auto; font-size: .9rem; }

.main { padding: 1.25rem 1.5rem 2.5rem; overflow: auto; }
.top h1 { margin: 0 0 .25rem; font-size: 1.35rem; }
.muted, .hint { color: var(--muted); font-size: .88rem; }
.toolbar { display: flex; gap: .5rem; margin: 1rem 0 .85rem; flex-wrap: wrap; }
.grid-2 { display: grid; grid-template-columns: 1.2fr .9fr; gap: 1rem; align-items: start; }
@media (max-width: 980px) {
  .shell { grid-template-columns: 1fr; }
  .nav { flex-direction: row; flex-wrap: wrap; border-right: 0; border-bottom: 1px solid var(--line); }
  .grid-2 { grid-template-columns: 1fr; }
}
.card {
  background: color-mix(in srgb, var(--bg1) 88%, transparent);
  border: 1px solid var(--line); border-radius: 14px; padding: 1rem;
}
.form-card h3 { margin: 0 0 .85rem; font-size: 1rem; }
.form { display: grid; gap: .65rem; }
.form.compact { gap: .5rem; }
.form.inline { grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); align-items: end; }
.form label { display: grid; gap: .28rem; font-size: .85rem; color: var(--muted); }
.form input, .form select {
  width: 100%; padding: .55rem .7rem; border-radius: 8px;
  border: 1px solid var(--line); background: var(--bg0); color: var(--text); font: inherit;
}
/* Primary-key / locked fields: visibly non-editable */
.form input:read-only,
.form input[readonly],
.form select:disabled,
.form textarea:read-only {
  background: #2a3340;
  color: #8b9bb0;
  border-color: #4a5568;
  cursor: not-allowed;
  opacity: 1;
  -webkit-text-fill-color: #8b9bb0;
}
.form label.is-locked .lbl::after {
  content: "（不可改）";
  margin-left: .35rem;
  font-size: .75rem;
  font-weight: 500;
  color: #7a8aa0;
}
.field-lock-hint {
  margin: -.15rem 0 0;
  font-size: .75rem;
  color: #7a8aa0;
}
.form fieldset {
  border: 1px solid var(--line); border-radius: 8px; padding: .6rem .75rem; margin: 0;
}
.form legend { color: var(--muted); padding: 0 .35rem; }
.checks { display: grid; gap: .45rem; max-height: 280px; overflow: auto; }
.checks .chk { margin: 0; }
.tier-head {
  display: grid;
  grid-template-columns: 1.25rem 1fr 4.2rem 4.2rem;
  gap: .4rem;
  font-size: .75rem;
  padding: 0 .15rem;
}
.chk.tier-row {
  display: grid;
  grid-template-columns: 1.25rem 1fr 4.2rem 4.2rem;
  gap: .4rem;
  align-items: center;
}
.chk.tier-row .chk-text { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.chk.tier-row input[type="number"] {
  width: 100%;
  padding: .25rem .35rem;
  border-radius: 6px;
  border: 1px solid var(--line, #3a4a63);
  background: var(--bg0, #0f1419);
  color: inherit;
  font-size: .85rem;
}
.chk.tier-row input[type="number"]:disabled { opacity: .4; }
.form legend.lbl {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  float: none;
  width: auto;
}
.chk {
  display: flex !important;
  flex-direction: row !important;
  align-items: center !important;
  justify-content: space-between !important;
  gap: .75rem !important;
  color: var(--text) !important;
  font-size: .9rem !important;
  text-align: left !important;
}
.chk-text {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  flex: 1 1 auto;
  min-width: 0;
  text-align: left;
  justify-content: flex-start;
  white-space: normal;
  line-height: 1.35;
}
.chk input[type="checkbox"] {
  width: auto !important;
  flex: 0 0 auto;
  margin: 0;
  order: 2;
}
.chk .help { margin-left: .15rem; flex: 0 0 auto; }
.row-btns { display: flex; gap: .5rem; margin-top: .35rem; }

button {
  border: 1px solid var(--line); background: var(--bg2); color: var(--text);
  border-radius: 8px; padding: .55rem .9rem; cursor: pointer; font: inherit;
}
button.primary { background: var(--accent); color: #04231d; border-color: transparent; font-weight: 650; }
button.danger { background: color-mix(in srgb, var(--danger) 28%, var(--bg2)); border-color: var(--danger); }
button:disabled { opacity: .4; cursor: not-allowed; }

.tbl { width: 100%; border-collapse: collapse; font-size: .88rem; }
.tbl th, .tbl td {
  border-bottom: 1px solid var(--line); padding: .5rem .4rem; text-align: left; vertical-align: top;
}
.tbl th { color: var(--muted); font-weight: 600; }
.tbl tr:hover td { background: color-mix(in srgb, var(--bg2) 55%, transparent); }
.tbl .act { white-space: nowrap; }
.pill {
  display: inline-block; padding: .1rem .45rem; border-radius: 999px; font-size: .75rem;
  background: var(--bg2); border: 1px solid var(--line);
}
.pill.on { border-color: var(--ok); color: var(--ok); }
.pill.off { opacity: .7; }
.tag { display: inline-block; margin: .08rem .15rem; padding: .05rem .35rem; border-radius: 6px;
  background: var(--bg0); border: 1px solid var(--line); font-size: .75rem; }
.tbl-scroll { overflow: auto; max-height: 58vh; margin-top: .75rem; }
.pager { display: flex; gap: .75rem; align-items: center; margin-top: .75rem; }
.lbl { display: inline-flex; align-items: center; gap: .35rem; }
button.help {
  width: 1.15rem; height: 1.15rem; padding: 0; border-radius: 999px;
  font-size: .72rem; font-weight: 700; line-height: 1;
  border: 1px solid var(--accent); color: var(--accent);
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  cursor: help; flex: 0 0 auto;
}
button.help:hover { filter: brightness(1.15); background: color-mix(in srgb, var(--accent) 28%, transparent); }
.help-pop {
  position: fixed; inset: 0; z-index: 50;
  background: rgba(0,0,0,.45);
  display: grid; place-items: center; padding: 1rem;
}
.help-pop[hidden] { display: none !important; }
.help-pop-card {
  width: min(440px, 94vw);
  background: var(--bg1); border: 1px solid var(--line);
  border-radius: 12px; padding: 1rem 1.1rem;
  box-shadow: 0 16px 48px rgba(0,0,0,.45);
}
.help-pop-head {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: .65rem; gap: .5rem;
}
.help-pop-head strong { color: var(--accent); }
#help-close {
  width: 1.6rem; height: 1.6rem; padding: 0; border-radius: 8px; font-size: 1.1rem;
}
#help-body {
  margin: 0; color: var(--text); font-size: .92rem; line-height: 1.55; white-space: pre-wrap;
}
.kpi-row {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: .75rem;
  margin: 0 0 1rem;
}
.board-stack {
  display: grid;
  gap: 1rem;
  margin-bottom: 1rem;
}
.board-stack .card { min-width: 0; }
.board-stack .tbl { width: 100%; }
@media (max-width: 900px) {
  .kpi-row { grid-template-columns: repeat(2, 1fr); }
}
.kpi {
  background: color-mix(in srgb, var(--bg1) 88%, transparent);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: .9rem 1rem;
}
.kpi-v { font-size: 1.75rem; font-weight: 700; color: var(--accent); line-height: 1.1; }
.kpi-l { color: var(--muted); font-size: .82rem; margin-top: .25rem; }
.card-title { margin: 0 0 .75rem; font-size: 1rem; }
.pill {
  display: inline-flex; align-items: center;
  padding: .25rem .65rem; border-radius: 999px; font-size: .8rem;
  border: 1px solid var(--line);
}
.pill-on { background: color-mix(in srgb, var(--ok) 25%, transparent); color: var(--ok); }
.pill-off { background: color-mix(in srgb, var(--danger) 18%, transparent); color: var(--danger); }
.tag {
  display: inline-block; padding: .1rem .45rem; border-radius: 6px;
  background: var(--bg2); font-size: .78rem;
}
.tag.ok { background: color-mix(in srgb, var(--ok) 28%, transparent); color: var(--ok); }
.warn { color: #f0b429; }
.type-badge {
  display: inline-block; padding: .12rem .5rem; border-radius: 6px;
  font-size: .78rem; font-weight: 600;
}
.type-sip {
  background: color-mix(in srgb, #5b8def 22%, transparent);
  color: #8eb6ff;
}
.type-webrtc {
  background: color-mix(in srgb, var(--accent) 22%, transparent);
  color: var(--accent);
}
.contact-cell { max-width: 28rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.row-off { opacity: .55; }
.mono { font-family: ui-monospace, Consolas, monospace; font-size: .8rem; }
.board-log-card { margin-top: 1rem; }
.board-log {
  margin: 0; max-height: 180px; overflow: auto;
  font-size: .75rem; color: var(--muted);
  background: var(--bg0); border-radius: 8px; padding: .65rem .75rem;
  white-space: pre-wrap;
}
.board-toolbar { align-items: center; }