:root {
  --navy: #0b2545;
  --navy-soft: #1a3a6b;
  --red: #c8102e;
  --red-soft: #e63946;
  --green: #138a43;
  --green-soft: #2a9d4f;
  --bg: #f6f7fb;
  --card: #ffffff;
  --ink: #1a1f2e;
  --ink-2: #4a5168;
  --ink-3: #7a8099;
  --border: #dfe3ec;
  --border-strong: #c2c8d6;
  --good-bg: #e6f7ec;
  --good-ink: #0e6b35;
  --bad-bg: #fdecee;
  --bad-ink: #9c0f24;
  --mono: 'JetBrains Mono', 'SFMono-Regular', Consolas, Menlo, monospace;
  --sans: 'Noto Sans JP', -apple-system, 'Hiragino Kaku Gothic ProN', 'Yu Gothic', sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--sans);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.55;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Header ---------- */
.site-header {
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-soft) 100%);
  color: #fff;
  padding: 48px 0 40px;
  border-bottom: 4px solid var(--red);
}
.site-header h1 {
  margin: 0 0 14px;
  font-size: 30px;
  font-weight: 700;
  letter-spacing: 0.02em;
}
.site-header .accent {
  color: #ffd7c7;
  font-family: var(--mono);
  font-weight: 600;
}
.site-header .lede {
  margin: 0 0 18px;
  max-width: 820px;
  color: #d5ddeb;
  font-size: 14.5px;
}
.site-header .lede strong { color: #fff; }

.metric-key {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 0; padding: 0; list-style: none;
  font-size: 13px;
  color: #cfd6e5;
}
.metric-key li { display: flex; align-items: center; gap: 6px; }
.tag {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  font-family: var(--mono);
  font-weight: 600;
  font-size: 12px;
  color: #fff;
}
.tag.p1 { background: #4b6ea9; }
.tag.p2 { background: #b2494a; }
.tag.p3 { background: var(--red); }

/* ---------- Sections ---------- */
main section { padding: 40px 0; border-bottom: 1px solid var(--border); }
main section:last-of-type { border-bottom: none; }
main h2 {
  margin: 0 0 6px;
  font-size: 20px;
  color: var(--navy);
  font-weight: 700;
}
.section-sub {
  margin: 0 0 18px;
  color: var(--ink-2);
  font-size: 13.5px;
}
.section-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}
.sort-hint {
  color: var(--ink-3);
  font-size: 12.5px;
}

/* ---------- Cards ---------- */
.card-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
}
.card-col {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 18px 18px 10px;
}
.col-label {
  margin: 0 0 12px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.03em;
  display: flex;
  align-items: baseline;
  gap: 8px;
}
.col-label.good { color: var(--green); }
.col-label.bad { color: var(--red); }
.col-label .sub {
  font-weight: 400;
  font-size: 12px;
  color: var(--ink-3);
  letter-spacing: 0;
}
.card-list { display: flex; flex-direction: column; gap: 8px; }
.card-row {
  display: grid;
  grid-template-columns: 28px 1fr auto;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: #fafbfe;
}
.card-row .rank {
  font-family: var(--mono);
  font-weight: 600;
  color: var(--ink-3);
  font-size: 14px;
  text-align: center;
}
.card-row .team {
  font-weight: 500;
  font-size: 14px;
}
.card-row .team .meta {
  display: block;
  font-size: 11.5px;
  color: var(--ink-3);
  font-family: var(--mono);
  margin-top: 2px;
}
.card-row .val {
  font-family: var(--mono);
  font-weight: 600;
  font-size: 15px;
}
.card-row.good .val { color: var(--good-ink); }
.card-row.bad .val { color: var(--bad-ink); }

/* ---------- Chart ---------- */
.chart-section .chart-wrap {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
  height: 560px;
  position: relative;
}
.toggle-group {
  display: inline-flex;
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  overflow: hidden;
  background: var(--card);
}
.toggle {
  border: 0;
  background: transparent;
  padding: 8px 14px;
  font-family: var(--sans);
  font-size: 13px;
  color: var(--ink-2);
  cursor: pointer;
}
.toggle + .toggle { border-left: 1px solid var(--border); }
.toggle.active {
  background: var(--navy);
  color: #fff;
}

/* ---------- Table ---------- */
.table-scroll {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--card);
}
table.ranking {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
  min-width: 880px;
}
table.ranking th, table.ranking td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  white-space: nowrap;
}
table.ranking thead th {
  background: #f0f2f8;
  color: var(--navy);
  font-weight: 700;
  font-size: 12.5px;
  cursor: pointer;
  user-select: none;
  position: sticky;
  top: 0;
  border-bottom: 2px solid var(--border-strong);
}
table.ranking thead th:hover { background: #e7ebf4; }
table.ranking thead th.num { text-align: right; }
table.ranking thead th.active-asc::after  { content: ' ▲'; color: var(--red); }
table.ranking thead th.active-desc::after { content: ' ▼'; color: var(--red); }
table.ranking td.num {
  text-align: right;
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
}
table.ranking tbody tr:hover { background: #fafbfe; }

table.ranking td.cell-good {
  background: var(--good-bg);
  color: var(--good-ink);
  font-weight: 600;
}
table.ranking td.cell-bad {
  background: var(--bad-bg);
  color: var(--bad-ink);
  font-weight: 600;
}
table.ranking td.team-name { font-weight: 500; }
table.ranking td.team-name .abbr {
  display: inline-block;
  min-width: 36px;
  padding: 2px 6px;
  margin-right: 8px;
  background: var(--navy);
  color: #fff;
  border-radius: 3px;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 600;
  text-align: center;
}

/* ---------- Methodology ---------- */
.methodology details {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 4px 20px;
}
.methodology summary {
  list-style: none;
  cursor: pointer;
  padding: 14px 0;
  display: flex;
  align-items: center;
  gap: 10px;
}
.methodology summary::-webkit-details-marker { display: none; }
.methodology summary::before {
  content: '▶';
  color: var(--red);
  font-size: 12px;
  transition: transform 0.15s;
}
.methodology details[open] summary::before { transform: rotate(90deg); }
.methodology summary h2 { margin: 0; display: inline; font-size: 18px; }
.method-body { padding: 0 0 20px; color: var(--ink-2); }
.method-body h3 {
  color: var(--navy);
  margin: 18px 0 6px;
  font-size: 15px;
}
.method-body pre {
  background: #0f1a2e;
  color: #e6ecf5;
  padding: 14px 16px;
  border-radius: 6px;
  font-family: var(--mono);
  font-size: 13px;
  overflow-x: auto;
}
.method-body code { font-family: var(--mono); }
table.mini {
  border-collapse: collapse;
  font-size: 13px;
  margin-top: 6px;
}
table.mini th, table.mini td {
  border: 1px solid var(--border);
  padding: 6px 12px;
}
table.mini th { background: #f0f2f8; color: var(--navy); }
table.mini td { font-family: var(--mono); text-align: right; }
table.mini td:first-child { text-align: left; font-family: var(--sans); }

/* ---------- Footer ---------- */
.site-footer {
  padding: 20px 0 40px;
  color: var(--ink-3);
}
.site-footer code {
  background: #e7ebf4;
  padding: 1px 6px;
  border-radius: 3px;
  font-family: var(--mono);
  font-size: 12px;
}

/* ---------- Responsive ---------- */
@media (max-width: 720px) {
  .site-header { padding: 32px 0 28px; }
  .site-header h1 { font-size: 22px; }
  main section { padding: 28px 0; }
  main h2 { font-size: 17px; }
  .card-grid { grid-template-columns: 1fr; }
  .chart-section .chart-wrap { height: 460px; }
  .section-head { flex-direction: column; align-items: flex-start; }
}