:root {
  color-scheme: light dark;
  --bg: #f6f6f8;
  --surface: #ffffff;
  --ink: #1d1d1f;
  --muted: #66666c;
  --line: #e4e4e9;
  --accent: #c73e2f;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.04), 0 8px 28px rgba(0, 0, 0, 0.08);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b0b10;
    --surface: #1c1c1f;
    --ink: #f5f5f7;
    --muted: #a1a1a8;
    --line: #2c2c31;
    --accent: #ef7b64;
    --shadow: 0 8px 20px rgba(0, 0, 0, 0.35), 0 24px 64px rgba(0, 0, 0, 0.45);
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.65;
}

a { color: inherit; text-decoration: none; }

main {
  width: min(960px, calc(100% - 32px));
  margin: 0 auto;
  padding: 64px 0 72px;
}

.home-link {
  display: inline-flex;
  align-items: center;
  color: var(--muted);
  font-size: 0.92rem;
  margin-bottom: 36px;
}

.home-link:hover { color: var(--accent); }

.page-head h1 {
  margin: 0;
  font-size: clamp(2rem, 5vw, 3.2rem);
  letter-spacing: 0.03em;
}

.page-head p {
  margin: 12px 0 0;
  color: var(--muted);
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin: 36px 0;
}

.summary-card {
  padding: 20px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.summary-label {
  display: block;
  color: var(--muted);
  font-size: 0.82rem;
}

.summary-value {
  display: block;
  margin-top: 8px;
  font-size: 1.55rem;
  font-weight: 650;
}

.summary-unit {
  font-size: 0.82rem;
  font-weight: 400;
  color: var(--muted);
}

.summary-sub {
  display: block;
  margin-top: 8px;
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.4;
}

.section-title {
  margin: 42px 0 16px;
  font-size: 1.25rem;
}

.chart {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  height: 220px;
  padding: 16px 12px 8px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow-x: auto;
}

.month {
  display: flex;
  flex: 1 0 52px;
  flex-direction: column;
  align-items: center;
  justify-content: flex-end;
  height: 100%;
  min-width: 52px;
}

.month-bar {
  width: 24px;
  min-height: 2px;
  border-radius: 8px 8px 3px 3px;
  background: var(--accent);
  opacity: 0.88;
}

.month-value {
  margin-top: 8px;
  color: var(--muted);
  font-size: 0.72rem;
  white-space: nowrap;
}

.month-key {
  margin-top: 3px;
  color: var(--muted);
  font-size: 0.72rem;
  white-space: nowrap;
}

.table-wrap {
  overflow-x: auto;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.run-year {
  margin: 0 0 14px;
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.run-year summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
}

.run-year summary::-webkit-details-marker {
  display: none;
}

.run-year summary::after {
  content: "+";
  color: var(--muted);
  font-size: 1.2rem;
  line-height: 1;
}

.run-year[open] summary::after {
  content: "−";
}

.run-year-name {
  font-weight: 650;
}

.run-year-meta {
  color: var(--muted);
  font-size: 0.85rem;
}

.run-year .table-wrap {
  border: 0;
  border-top: 1px solid var(--line);
  border-radius: 0;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}

th, td {
  padding: 13px 16px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  white-space: nowrap;
}

th {
  color: var(--muted);
  font-weight: 500;
  background: color-mix(in srgb, var(--surface) 84%, var(--line));
}

tr:last-child td { border-bottom: 0; }

.updated {
  margin-top: 28px;
  color: var(--muted);
  font-size: 0.82rem;
}

@media (max-width: 700px) {
  main { padding: 42px 0 56px; }

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

  .run-year summary {
    align-items: flex-start;
    flex-direction: column;
    gap: 6px;
  }
}