:root {
  --bg: #0f1216;
  --panel: #1a1f27;
  --line: #2a323d;
  --text: #e7ecf2;
  --muted: #8b97a6;
  --accent: #ff7ac6;
  --danger: #ff5d5d;
  --ok: #57d6a0;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, "Segoe UI", "Noto Sans TC", sans-serif;
  line-height: 1.5;
}

.wrap {
  max-width: 860px;
  margin: 0 auto;
  padding: 2.5rem 1.25rem 4rem;
}

header h1 {
  margin: 0 0 0.35rem;
  font-size: 1.7rem;
}

.sub {
  margin: 0;
  color: var(--muted);
}

.banner {
  margin: 1.5rem 0 0;
  padding: 1rem 1.25rem;
  border-radius: 12px;
  border: 1px solid var(--danger);
  background: rgba(255, 93, 93, 0.12);
  color: var(--danger);
  font-weight: 600;
}

.banner.ok {
  border-color: var(--ok);
  background: rgba(87, 214, 160, 0.12);
  color: var(--ok);
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 0.9rem;
  margin: 1.5rem 0;
}

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1rem 1.1rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.label {
  color: var(--muted);
  font-size: 0.8rem;
}

.value {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text);
  text-decoration: none;
  word-break: break-word;
}

.value.big {
  font-size: 2.1rem;
  color: var(--accent);
}

a.value:hover {
  text-decoration: underline;
}

.chart-box {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1.1rem 1.25rem 1.5rem;
}

.chart-box h2 {
  margin: 0 0 0.75rem;
  font-size: 1.05rem;
}

.hint {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 400;
  margin-left: 0.5rem;
}

.chart-canvas-box {
  position: relative;
  height: 320px;
}

@media (max-width: 520px) {
  .chart-canvas-box {
    height: 260px;
  }
}

.empty {
  color: var(--muted);
  padding: 2rem 0;
  text-align: center;
}

footer {
  margin-top: 2rem;
  color: var(--muted);
  font-size: 0.8rem;
  text-align: center;
}