:root {
  --bg: #f8fafc;
  --card: #ffffff;
  --line: #dbe4ee;
  --text: #0f172a;
  --subtle: #64748b;
  --blue: #2563eb;
  --gray: #94a3b8;
  --red: #dc2626;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", ui-sans-serif, system-ui, sans-serif;
}

.page-shell {
  max-width: 1240px;
  margin: 0 auto;
  padding: 28px 20px 40px;
}

.hero {
  margin-bottom: 20px;
}

.hero h1 {
  margin: 0;
  font-size: 30px;
  line-height: 1.2;
  font-weight: 800;
}

.hero p {
  margin: 10px 0 0;
  color: var(--subtle);
  font-size: 14px;
  line-height: 1.6;
}

.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.panel {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 18px;
}

.panel-overview,
.panel-trace {
  grid-column: 1 / -1;
}

.panel-title {
  font-size: 18px;
  font-weight: 800;
  margin-bottom: 14px;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.metric-card {
  background: #eff6ff;
  border-radius: 14px;
  padding: 14px;
}

.metric-label {
  color: var(--subtle);
  font-size: 12px;
}

.metric-value {
  margin-top: 8px;
  font-size: 24px;
  font-weight: 800;
}

.stack {
  display: grid;
  gap: 10px;
}

.row-between {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
}

.micro-label {
  color: var(--subtle);
  font-size: 12px;
}

.bar-shell {
  margin-top: 5px;
  width: 100%;
  height: 10px;
  background: #e2e8f0;
  border-radius: 999px;
  overflow: hidden;
}

.bar-fill {
  height: 100%;
  border-radius: 999px;
}

.bar-blue {
  background: var(--blue);
}

.bar-gray {
  background: var(--gray);
}

.bar-red {
  background: var(--red);
}

.chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 6px 10px;
  font-size: 12px;
  background: #f1f5f9;
  color: #334155;
}

.trace-search {
  display: flex;
  gap: 12px;
  margin-bottom: 12px;
}

.trace-search input {
  flex: 1;
  border: 1px solid #cbd5e1;
  border-radius: 12px;
  padding: 11px 12px;
  font-size: 14px;
  background: #fff;
}

.trace-search button {
  border: none;
  border-radius: 12px;
  padding: 11px 16px;
  font-size: 14px;
  font-weight: 700;
  color: #fff;
  background: var(--blue);
  cursor: pointer;
}

.trace-status {
  color: var(--subtle);
  font-size: 13px;
  margin-bottom: 12px;
}

.trace-grid {
  display: grid;
  gap: 12px;
}

.trace-block {
  background: #f8fafc;
  border-radius: 14px;
  padding: 14px;
}

.trace-block-title {
  color: var(--subtle);
  font-size: 12px;
  margin-bottom: 8px;
}

.trace-block pre {
  margin: 0;
  white-space: pre-wrap;
  word-break: break-word;
  font-size: 12px;
  line-height: 1.6;
  color: var(--text);
}

.empty-state {
  color: var(--subtle);
  font-size: 13px;
}

@media (max-width: 960px) {
  .dashboard-grid {
    grid-template-columns: 1fr;
  }

  .metric-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .page-shell {
    padding: 20px 14px 32px;
  }

  .hero h1 {
    font-size: 24px;
  }

  .metric-grid {
    grid-template-columns: 1fr;
  }

  .trace-search {
    flex-direction: column;
  }
}