:root {
  --bg: #0e1117;
  --panel: #161b26;
  --panel-2: #1c2230;
  --border: #262d3d;
  --text: #e6e9ef;
  --muted: #8b93a7;
  --green: #2ecc71;
  --blue: #3aa0ff;
  --orange: #ff9f43;
  --purple: #a55eea;
  --red: #ff5c5c;
  --cyan: #22d3ee;
  --yellow: #ffd93d;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Microsoft YaHei", Roboto, Helvetica, Arial, sans-serif;
  font-size: 14px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding: 14px 20px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}

.brand { display: flex; align-items: center; gap: 10px; }
.brand h1 { font-size: 17px; margin: 0; font-weight: 600; letter-spacing: .3px; }

.dot {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--muted);
  box-shadow: 0 0 0 0 rgba(46, 204, 113, .6);
}
.dot.live { background: var(--green); animation: pulse 2s infinite; }
.dot.dead { background: var(--red); }

@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(46, 204, 113, .55); }
  70% { box-shadow: 0 0 0 8px rgba(46, 204, 113, 0); }
  100% { box-shadow: 0 0 0 0 rgba(46, 204, 113, 0); }
}

.host-info { color: var(--muted); font-size: 12.5px; line-height: 1.6; text-align: right; }
.host-info b { color: var(--text); font-weight: 600; }

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 12px;
  padding: 16px 20px 4px;
}

.card {
  background: linear-gradient(180deg, var(--panel-2), var(--panel));
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 16px;
}

.card-title { color: var(--muted); font-size: 12.5px; margin-bottom: 8px; }
.card-title em { font-style: normal; opacity: .75; font-size: 11px; }

.card-value { font-size: 28px; font-weight: 600; line-height: 1.1; font-variant-numeric: tabular-nums; }
.card-value.small { font-size: 22px; }
.card-value small { font-size: 12px; color: var(--muted); margin-left: 4px; font-weight: 400; }

.card-sub { margin-top: 6px; color: var(--muted); font-size: 12px; font-variant-numeric: tabular-nums; }

.down { color: var(--cyan); }
.up { color: var(--purple); }
.read { color: var(--blue); }
.write { color: var(--orange); }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(420px, 1fr));
  gap: 12px;
  padding: 12px 20px 24px;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 14px 6px;
}

.panel.wide { grid-column: 1 / -1; }

.panel h2 {
  font-size: 13.5px;
  font-weight: 600;
  margin: 0 0 8px;
  color: #cbd3e1;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 6px 12px;
}

.hint { color: var(--muted); font-size: 11.5px; font-weight: 400; }

/* CPU 单核勾选框 */
.core-filter {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 4px 12px;
  font-weight: 400;
}

.core-toggle {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  cursor: pointer;
  color: var(--muted);
  font-size: 11.5px;
  line-height: 1.4;
  user-select: none;
  font-variant-numeric: tabular-nums;
}

.core-toggle:hover { color: var(--text); }

.core-toggle input {
  width: 13px;
  height: 13px;
  margin: 0;
  cursor: pointer;
  accent-color: var(--blue);
}

.core-toggle i {
  width: 9px;
  height: 3px;
  border-radius: 2px;
  display: inline-block;
}

.chart { width: 100%; height: 240px; }
.panel.wide .chart { height: 260px; }

.footer {
  color: var(--muted);
  font-size: 12px;
  padding: 0 20px 28px;
}

@media (max-width: 560px) {
  .grid { grid-template-columns: 1fr; padding: 12px; }
  .cards { padding: 12px; }
  .host-info { text-align: left; }
}