:root {
  --bg: #f5f1e8;
  --bg-card: #ffffff;
  --ink: #2a2a2a;
  --ink-sub: #6b6b6b;
  --accent: #2d5a4a;
  --accent-soft: #5d8a7a;
  --warm: #c4633c;
  --hot: #d4632a;
  --border: #e2dccd;
  --mark: #fff3a8;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, "Hiragino Kaku Gothic ProN", "Yu Gothic UI", sans-serif;
  background: var(--bg);
  color: var(--ink);
  font-size: 15px;
  line-height: 1.6;
  padding-bottom: 80px;
}

header {
  position: sticky; top: 0; z-index: 10;
  background: var(--accent); color: #fff;
  padding: env(safe-area-inset-top) 0 0 0;
  box-shadow: 0 2px 6px rgba(0,0,0,.08);
}
header h1 {
  margin: 0; padding: 12px 16px 6px;
  font-size: 18px; font-weight: 600; letter-spacing: .02em;
}

.tabs {
  display: flex; gap: 0; overflow-x: auto;
  background: var(--accent);
  -webkit-overflow-scrolling: touch;
}
.tab {
  flex: 1 0 auto;
  padding: 10px 16px;
  background: transparent; color: rgba(255,255,255,.7);
  border: none; border-bottom: 3px solid transparent;
  font-size: 14px; font-weight: 600; cursor: pointer;
  white-space: nowrap;
}
.tab.active { color: #fff; border-bottom-color: #f5d76a; }

main { padding: 12px; max-width: 820px; margin: 0 auto; }
.tab-panel { display: none; }
.tab-panel.active { display: block; }

.toolbar {
  display: flex; gap: 10px; align-items: center;
  margin-bottom: 10px; flex-wrap: wrap;
}
.toolbar input[type=search] {
  flex: 1; min-width: 200px;
  padding: 10px 12px; font-size: 15px;
  border: 1px solid var(--border); border-radius: 8px;
  background: #fff;
}
.btn-sub {
  padding: 8px 14px; font-size: 13px;
  background: #fff; color: var(--accent);
  border: 1px solid var(--border); border-radius: 8px;
  cursor: pointer;
}
.hint { color: var(--ink-sub); font-size: 12px; }

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  margin-bottom: 10px;
  padding: 0;
  overflow: hidden;
}
.card > summary {
  list-style: none; cursor: pointer;
  padding: 14px 16px;
  display: flex; align-items: center; gap: 8px;
  font-size: 15px;
  user-select: none;
}
.card > summary::-webkit-details-marker { display: none; }
.card > summary::before {
  content: "▸"; color: var(--accent); font-size: 12px; transition: transform .15s;
}
.card[open] > summary::before { transform: rotate(90deg); }
.card > summary .kana { color: var(--ink-sub); font-size: 12px; }
.card > summary .lead { color: var(--ink-sub); font-size: 13px; margin-left: 4px; flex: 1; }

.card .lead { color: var(--ink-sub); margin: 0 16px 8px; }
.card .chips,
.card .ref-grid,
.card .sym-grid,
.card .memo,
.card .q,
.card .rev-group { margin: 0 16px 12px; }

.badge {
  margin-left: auto;
  font-size: 12px;
  padding: 2px 8px; border-radius: 12px;
  background: #eee; color: var(--ink-sub);
}
.badge.hot { background: var(--warm); color: #fff; }

.chips { display: flex; flex-wrap: wrap; gap: 6px; padding-top: 6px; padding-bottom: 8px; }
.chip {
  display: inline-block;
  padding: 7px 11px;
  font-size: 13px;
  background: #f4efe1; color: var(--ink);
  border: 1px solid var(--border); border-radius: 16px;
  cursor: pointer; user-select: none;
}
.chip.on { background: var(--accent); color: #fff; border-color: var(--accent); }

.scale { display: flex; gap: 4px; flex-wrap: wrap; }
.scale-cell {
  width: 36px; height: 36px;
  font-size: 13px;
  background: #f4efe1; color: var(--ink);
  border: 1px solid var(--border); border-radius: 6px;
  cursor: pointer;
}
.scale-cell.on { background: var(--accent); color: #fff; border-color: var(--accent); }

.q { margin-top: 8px; }
.q label { display: block; font-weight: 600; font-size: 13px; margin-bottom: 6px; color: var(--ink); }

.result-card {
  background: #fff8e0;
  border: 1px solid #e8d27a;
  border-radius: 10px;
  padding: 14px 16px;
  margin: 14px 0;
}
.result-card h3 { margin: 0 0 8px; font-size: 15px; color: var(--accent); }
.rank { list-style: none; margin: 0; padding: 0; }
.rank li { padding: 8px 0; border-top: 1px dashed var(--border); }
.rank li:first-child { border-top: 0; }
.rank-head { display: flex; align-items: center; gap: 8px; }
.medal {
  display: inline-flex; align-items: center; justify-content: center;
  width: 22px; height: 22px; border-radius: 50%;
  background: var(--accent); color: #fff; font-size: 12px; font-weight: 700;
}
.note { color: var(--ink-sub); font-size: 12px; margin: 8px 0 0; }

.hint-list { list-style: none; margin: 0; padding: 0; }
.hint-list li {
  padding: 6px 0; border-top: 1px dashed var(--border);
  font-size: 13px;
}
.hint-list li:first-child { border-top: 0; }
.tag {
  display: inline-block; font-size: 11px;
  background: var(--accent-soft); color: #fff;
  padding: 1px 6px; border-radius: 4px;
  margin-right: 6px;
}

.cat-head {
  margin: 18px 0 8px;
  font-size: 13px; color: var(--accent);
  letter-spacing: .04em;
}

.sym-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 8px 12px;
}
.sym-grid section h5 { margin: 0 0 4px; font-size: 12px; color: var(--accent); }
.sym-grid section ul { margin: 0; padding-left: 18px; font-size: 13px; }
.sym-grid section li { margin-bottom: 2px; }

.ref-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 8px 12px;
}
.ref-grid > div h5 { margin: 0 0 4px; font-size: 12px; color: var(--accent); }
.ref-grid > div p { margin: 0; font-size: 13px; }
.ref-grid > div ul { margin: 0; padding-left: 18px; font-size: 13px; }

.memo {
  background: #f5f1e8;
  border-left: 3px solid var(--warm);
  margin: 0 16px 14px;
  padding: 8px 12px;
  font-size: 13px;
  color: var(--ink);
  border-radius: 0 6px 6px 0;
}

.rev-group { margin-top: 10px; }
.rev-group h4 { margin: 8px 0 4px; font-size: 13px; color: var(--accent); }
table.rev { width: 100%; border-collapse: collapse; font-size: 13px; }
table.rev td { padding: 5px 8px; border-bottom: 1px solid var(--border); vertical-align: top; }
table.rev td:first-child { width: 45%; font-weight: 500; }
table.rev td:last-child { color: var(--ink-sub); }

mark { background: var(--mark); padding: 0 2px; border-radius: 2px; }

footer {
  text-align: center; color: var(--ink-sub);
  font-size: 12px; padding: 24px 16px 40px;
}

.seg {
  display: flex; gap: 4px; margin-bottom: 10px;
  background: #fff; padding: 4px;
  border: 1px solid var(--border); border-radius: 10px;
  overflow-x: auto;
}
.seg-btn {
  flex: 1 0 auto;
  padding: 7px 10px;
  background: transparent; color: var(--ink-sub);
  border: none; border-radius: 6px;
  font-size: 13px; font-weight: 600; cursor: pointer;
  white-space: nowrap;
}
.seg-btn.active { background: var(--accent); color: #fff; }

.care-list { margin: 0 16px 12px; padding-left: 22px; font-size: 14px; }
.care-list li { margin-bottom: 4px; }

.tsubo-list { list-style: none; margin: 4px 0 0; padding: 0; }
.tsubo-list li {
  padding: 4px 8px;
  background: #f5f1e8;
  border-left: 3px solid var(--accent-soft);
  border-radius: 0 4px 4px 0;
  margin-bottom: 4px;
  font-size: 13px;
}
.tsubo-list .tsubo-loc {
  display: block;
  color: var(--ink-sub);
  font-size: 12px;
  margin-top: 1px;
}

table.rev th {
  text-align: left; font-size: 12px; color: var(--accent);
  padding: 5px 8px; border-bottom: 2px solid var(--border);
  background: #f5f1e8;
}

@media (max-width: 520px) {
  .sym-grid, .ref-grid { grid-template-columns: 1fr; }
  .tab { padding: 10px 12px; font-size: 13px; }
}