:root {
  --bg: #0b1118;
  --bg2: #121a24;
  --card: #151e28;
  --line: #243140;
  --tx: #e8eef4;
  --muted: #8b9aab;
  --acc: #2ec4b6;
  --acc-dim: #1a8f85;
  --ok: #3ecf8e;
  --bad: #f07178;
  --warn: #e6c07b;
  --mono: "Cascadia Code", "Consolas", ui-monospace, monospace;
  --sans: "Segoe UI", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  font: 15px/1.5 var(--sans);
  background:
    radial-gradient(1200px 500px at 10% -10%, rgba(46, 196, 182, 0.12), transparent 50%),
    radial-gradient(800px 400px at 100% 0%, rgba(46, 140, 196, 0.08), transparent 45%),
    var(--bg);
  color: var(--tx);
}

a { color: var(--acc); text-decoration: none; }
a:hover { text-decoration: underline; }

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  max-width: 1100px;
  margin: 0 auto;
  padding: 18px 20px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--tx);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-decoration: none;
}
.brand:hover { text-decoration: none; }
.mark {
  width: 32px;
  height: 32px;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--acc), #3d9cf0);
  display: grid;
  place-items: center;
  font-size: 14px;
  color: #06201d;
}
.nav-links { display: flex; gap: 18px; color: var(--muted); font-size: 0.92rem; }
.nav-links a { color: var(--muted); }
.nav-links a:hover { color: var(--tx); text-decoration: none; }

.wrap { max-width: 1100px; margin: 0 auto; padding: 8px 20px 64px; }

.hero { padding: 28px 0 12px; }
.hero h1 { font-size: clamp(1.8rem, 4vw, 2.6rem); margin: 0 0 10px; letter-spacing: -0.03em; }
.hero p { color: var(--muted); max-width: 640px; margin: 0 0 22px; }
.btns { display: flex; gap: 10px; flex-wrap: wrap; }
button, .btn {
  border: 0;
  border-radius: 10px;
  padding: 10px 16px;
  font-size: 0.92rem;
  cursor: pointer;
  font-family: inherit;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.pri { background: var(--acc); color: #06201d; font-weight: 700; }
.pri:hover { filter: brightness(1.06); }
.sec { background: #243140; color: var(--tx); }
.ghost { background: transparent; color: var(--muted); border: 1px solid var(--line); }

.grid { display: grid; gap: 14px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: 1.1fr 0.9fr; }
@media (max-width: 860px) {
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 16px 18px;
}
.card h2 { margin: 0 0 10px; font-size: 1rem; color: var(--acc); font-weight: 650; }
.card h3 { margin: 0 0 8px; font-size: 0.95rem; }

.kv { display: grid; grid-template-columns: 120px 1fr; gap: 6px 10px; font-size: 0.88rem; }
.kv span:nth-child(odd) { color: var(--muted); }
code, .mono { font-family: var(--mono); font-size: 0.82rem; }

table { width: 100%; border-collapse: collapse; font-size: 0.86rem; }
th, td { text-align: left; padding: 8px 6px; border-bottom: 1px solid var(--line); }
th { color: var(--muted); font-weight: 500; }

.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  padding: 3px 8px;
  border-radius: 999px;
  background: #1c2a36;
  color: var(--muted);
}
.pill.on { color: var(--ok); }
.pill.off { color: var(--bad); }
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--muted); }
.dot.on { background: var(--ok); box-shadow: 0 0 8px var(--ok); }
.dot.off { background: var(--bad); }
.dot.warn { background: var(--warn); }

label { display: block; font-size: 0.75rem; color: var(--muted); margin: 8px 0 4px; }
input, select, textarea {
  width: 100%;
  padding: 9px 11px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: #0e151c;
  color: var(--tx);
  font: inherit;
}
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--acc); }
.row { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.row-3 { display: grid; grid-template-columns: 1.4fr 0.7fr 0.9fr; gap: 10px; }
@media (max-width: 700px) { .row, .row-3 { grid-template-columns: 1fr; } }

.log {
  height: 280px;
  overflow: auto;
  background: #0e151c;
  border-radius: 8px;
  padding: 10px;
  font-family: var(--mono);
  font-size: 0.75rem;
  line-height: 1.45;
  white-space: pre-wrap;
  word-break: break-all;
}
.log .up { color: var(--ok); }
.log .down { color: #7ec8ff; }
.log .sys { color: var(--muted); }
.log .err { color: var(--bad); }

.metrics { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 8px; }
.metric { background: #0e151c; border-radius: 10px; padding: 12px; border: 1px solid var(--line); }
.metric .n { font-size: 1.2rem; font-weight: 650; word-break: break-all; }
.metric .l { color: var(--muted); font-size: 0.75rem; margin-top: 4px; }
.metric-on { border-color: rgba(62, 207, 142, 0.45); }
.metric-due { border-color: rgba(230, 192, 123, 0.55); }
.metric-off { opacity: 0.55; }

.device-list { display: flex; flex-direction: column; gap: 8px; max-height: 360px; overflow: auto; }
.dev {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 10px;
  background: #0e151c;
  border: 1px solid transparent;
  cursor: pointer;
}
.dev:hover, .dev.active { border-color: var(--acc); }
.dev .id { font-weight: 650; }
.dev .meta { color: var(--muted); font-size: 0.78rem; }
.dev .unbind { flex: 0 0 auto; padding: 4px 10px; font-size: 0.75rem; }
.login-card { max-width: 420px; margin: 40px auto 0; }
.login-card h2 { margin-bottom: 6px; }
.hint.err { color: var(--bad); }

.foot {
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px 20px 40px;
  color: var(--muted);
  font-size: 0.78rem;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
}
.foot a { color: var(--muted); }
.foot .beian-gongan {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.foot .beian-gongan img {
  width: 16px;
  height: 16px;
}
.hint { font-size: 0.75rem; color: var(--muted); margin-top: 6px; }
.empty { color: var(--muted); font-size: 0.88rem; padding: 18px 0; }

.pills { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 10px; min-height: 8px; }
.pills .pill.on { color: var(--ok); }
.pills .pill.off { color: var(--bad); }
.pills .pill.bad { color: var(--bad); background: #3d1c22; }
.dev .id .pill { margin-left: 6px; vertical-align: middle; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; margin: 8px 0 10px; }
.chip {
  border: 1px solid var(--line);
  background: #0e151c;
  color: var(--muted);
  border-radius: 999px;
  padding: 4px 10px;
  font-size: 0.75rem;
  cursor: pointer;
}
.chip.on { color: #06201d; font-weight: 650; }
#chart {
  width: 100%;
  height: 280px;
  display: block;
  background: #0e151c;
  border-radius: 10px;
}
.dlg {
  position: fixed;
  inset: 0;
  background: rgba(4, 8, 12, 0.62);
  display: grid;
  place-items: center;
  z-index: 9999;
  padding: 20px;
}
.dlg[hidden] { display: none; }
.dlg-card {
  width: min(420px, 100%);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 18px 20px;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.35);
}
.dlg-card h2 { margin: 0 0 8px; }
.dlg-card p { margin: 0; color: var(--tx); line-height: 1.55; word-break: break-word; }
.dlg-card.err h2 { color: var(--bad); }
.dlg-card.ok h2 { color: var(--ok); }

.param-toolbar {
  display: flex;
  gap: 10px;
  align-items: flex-end;
  flex-wrap: wrap;
  margin-bottom: 10px;
}
.param-toolbar .grow { flex: 1; min-width: 180px; }
.param-wrap {
  max-height: 480px;
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #0e151c;
}
.param-table { margin: 0; }
.param-table th, .param-table td { padding: 8px 10px; vertical-align: middle; }
.param-table th { position: sticky; top: 0; background: #151e28; z-index: 1; }
.param-table .mono { color: var(--muted); }
.param-table input { width: 120px; padding: 6px 8px; }
.param-table td.act { width: 84px; }
.param-table .write { padding: 6px 12px; font-size: 0.78rem; }
.param-table tr.dirty input { border-color: var(--warn); }
.param-table tr.busy { opacity: 0.6; pointer-events: none; }

.ota-line { display: flex; justify-content: space-between; gap: 10px; padding: 8px 0; border-bottom: 1px solid var(--line); font-size: 0.88rem; }
.ota-line:last-of-type { border-bottom: 0; }
.ota-line .k { color: var(--muted); }
.ota-progress { margin: 12px 0; color: var(--acc); }
.ota-progress.success { color: var(--ok); }
.ota-progress.failed { color: var(--bad); }
.ota-progress-label { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 6px 12px; margin-bottom: 8px; font-size: 0.88rem; }
.ota-progress progress { display: block; width: 100%; height: 10px; border: 0; border-radius: 5px; overflow: hidden; appearance: none; background: var(--line); accent-color: currentColor; }
.ota-progress progress::-webkit-progress-bar { background: var(--line); border-radius: 5px; }
.ota-progress progress::-webkit-progress-value { background: currentColor; border-radius: 5px; }
.ota-progress progress::-moz-progress-bar { background: currentColor; border-radius: 5px; }
.ota-go:disabled { opacity: 0.55; cursor: not-allowed; }
.ota-banner {
  margin: 10px 0;
  padding: 10px 12px;
  border-radius: 10px;
  background: rgba(230, 192, 123, 0.12);
  border: 1px solid rgba(230, 192, 123, 0.35);
  color: var(--warn);
  font-size: 0.88rem;
}
.ota-banner.ok {
  background: rgba(62, 207, 142, 0.1);
  border-color: rgba(62, 207, 142, 0.3);
  color: var(--ok);
}
.fw-now {
  margin-top: 8px;
  font-size: 0.88rem;
  color: var(--tx);
  display: flex;
  flex-wrap: wrap;
  gap: 12px 18px;
}
.fw-now span { color: var(--muted); }
.fw-now .mono { color: var(--acc); font-size: 0.92rem; }
#fw_admin { margin-top: 16px; padding-top: 12px; border-top: 1px solid var(--line); }
.fw-list { margin-top: 8px; overflow-x: auto; }
.fw-table { font-size: 0.82rem; }
.fw-table .muted { color: var(--muted); }
.fw-table .fw-del { padding: 4px 10px; font-size: 0.78rem; color: var(--bad); border-color: rgba(224, 82, 82, 0.35); }