:root {
  --bg: #f7f7f8;
  --fg: #1a1a1a;
  --muted: #6b6b73;
  --card-bg: #ffffff;
  --card-border: #e3e3e8;
  --accent: #2f6feb;
}

* { box-sizing: border-box; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--fg);
  margin: 0;
  padding: 2rem 1.5rem 4rem;
  max-width: 960px;
  margin-left: auto;
  margin-right: auto;
}

header {
  margin-bottom: 2rem;
}

h1 {
  margin: 0 0 0.25rem;
  font-size: 1.75rem;
}

.generated {
  margin: 0;
  color: var(--muted);
  font-size: 0.85rem;
}

section {
  margin-top: 2.5rem;
}

h2 {
  font-size: 1.2rem;
  margin: 0 0 1rem;
}

h2 .date {
  color: var(--muted);
  font-weight: 400;
  font-size: 0.95rem;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 6px;
  padding: 0.9rem 1rem;
}

.card-label {
  font-size: 0.8rem;
  color: var(--muted);
  margin-bottom: 0.35rem;
}

.card-value {
  font-size: 1.6rem;
  font-weight: 600;
  color: var(--accent);
}

.card-sub {
  font-size: 0.8rem;
  color: var(--muted);
  margin-top: 0.25rem;
}

.chart-wrap {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 6px;
  padding: 0.75rem;
  height: 280px;
}