:root,
html[data-theme="yin"] {
  --bg: #12100e;
  --panel: #1b1815;
  --ink: #f3eadc;
  --muted: #9a8f82;
  --line: #3a342c;
  --gold: #f8b500;
  --gold-dim: #c49a2a;
  --chip: #2a241c;
  --wagara: rgba(109, 51, 133, 0.10);
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.45);
}
html[data-theme="yang"] {
  --bg: #f7ecd4;
  --panel: #fff8ea;
  --ink: #3a2e22;
  --muted: #8a7a68;
  --line: #d4c4a8;
  --gold: #f8b500;
  --gold-dim: #c49a14;
  --chip: #efe3c8;
  --wagara: rgba(46, 93, 75, 0.12);
  --shadow: 0 18px 50px rgba(58, 46, 34, 0.12);
}
* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  font-family: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.55;
}
html[data-theme="yin"] body {
  background-color: var(--bg);
  background-image:
    linear-gradient(30deg, var(--wagara) 12%, transparent 12.5%, transparent 50%, var(--wagara) 50.5%, var(--wagara) 62%, transparent 62.5%),
    linear-gradient(150deg, var(--wagara) 12%, transparent 12.5%, transparent 50%, var(--wagara) 50.5%, var(--wagara) 62%, transparent 62.5%);
  background-size: 28px 48px;
}
html[data-theme="yang"] body {
  background-color: var(--bg);
  background-image:
    radial-gradient(circle at 50% 100%, transparent 11px, var(--wagara) 12px, transparent 13px),
    radial-gradient(circle at 0 100%, transparent 11px, var(--wagara) 12px, transparent 13px),
    radial-gradient(circle at 100% 100%, transparent 11px, var(--wagara) 12px, transparent 13px);
  background-size: 32px 16px;
}
.wrap { position: relative; z-index: 1; }
.theme-btn {
  appearance: none;
  -webkit-appearance: none;
  position: absolute;
  top: 10px;
  right: 0;
  z-index: 5;
  width: 44px;
  height: 44px;
  max-width: 44px;
  max-height: 44px;
  overflow: hidden;
  touch-action: manipulation;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--gold);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  cursor: pointer;
}
.theme-btn svg { width: 22px; height: 22px; display: block; pointer-events: none; }
.theme-btn[data-mode="yang"] .ico-moon { display: none; }
.theme-btn[data-mode="yin"] .ico-sun { display: none; }
a { color: var(--gold); }
.wrap {
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 1.6rem 1.2rem 4rem;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 18px;
}
.nav { margin: 0 0 0.8rem; font-size: 0.85rem; }
.nav a { text-decoration: none; }
.top {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
  border-bottom: 1px solid var(--line);
  padding-bottom: 1.1rem;
  margin-bottom: 1.4rem;
}
.kicker {
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  color: var(--gold-dim);
}
h1 {
  font-weight: 700;
  font-size: clamp(1.7rem, 4vw, 2.4rem);
  margin: 0.15rem 0 0.35rem;
  letter-spacing: 0.06em;
}
.blurb { margin: 0; color: var(--muted); max-width: 36rem; font-size: 0.92rem; }
.count {
  font-variant-numeric: tabular-nums;
  color: var(--muted);
  font-size: 0.85rem;
}
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1rem;
}
.card {
  appearance: none;
  width: 100%;
  text-align: left;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 0.7rem;
  color: inherit;
  cursor: pointer;
  box-shadow: var(--shadow);
  transition: transform 160ms ease, border-color 160ms ease;
}
.card:hover, .card:focus-visible {
  transform: translateY(-3px);
  border-color: var(--gold-dim);
  outline: none;
}
.card-art {
  background: #0c0b09;
  border-radius: 12px;
  aspect-ratio: 1;
  overflow: hidden;
  display: grid;
  place-items: center;
}
.card-art img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.card.secret .card-art,
.modal-art.secret {
  background:
    radial-gradient(ellipse at 50% 72%, #efe3c8 0%, #c9b48a 58%, #8a7a62 100%);
}
.card.secret .card-art img,
.modal-art.secret img {
  filter: brightness(0);
  opacity: 0.9;
}
.card.secret h2 { color: var(--muted); }
.card-meta { padding: 0.7rem 0.25rem 0.2rem; }
.no {
  font-size: 0.72rem;
  color: var(--gold);
  letter-spacing: 0.12em;
}
.card h2 {
  font-size: 1.25rem;
  margin: 0.15rem 0 0.15rem;
}
.en { color: var(--muted); font-size: 0.8rem; }
.chips { display: flex; flex-wrap: wrap; gap: 0.3rem; margin-top: 0.45rem; }
.chip {
  font-size: 0.7rem;
  background: var(--chip);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.12rem 0.5rem;
}
.foot {
  margin-top: 2.2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.78rem;
}
.scrim {
  position: fixed;
  inset: 0;
  background: rgba(8, 7, 6, 0.72);
  display: none;
  align-items: flex-start;
  justify-content: center;
  padding: 4vh 1rem 2rem;
  overflow: auto;
  z-index: 20;
}
.scrim.open { display: flex; }
.modal {
  width: min(820px, 100%);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: var(--shadow);
  padding: 1rem 1rem 1.4rem;
}
.modal-head {
  display: flex;
  justify-content: space-between;
  gap: 0.8rem;
  align-items: flex-start;
}
.modal h2 { margin: 0.1rem 0 0; font-size: 1.6rem; }
.close {
  appearance: none;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ink);
  border-radius: 999px;
  padding: 0.3rem 0.7rem;
  cursor: pointer;
}
.modal-art {
  margin: 0.9rem 0 1rem;
  background: #0c0b09;
  border-radius: 12px;
  overflow: hidden;
}
.modal-art img { display: block; width: 100%; height: auto; }
.sections { display: grid; gap: 0.85rem; }
.sec h3 {
  margin: 0 0 0.3rem;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--gold-dim);
}
.sec p, .sec li { margin: 0; font-size: 0.92rem; }
@media (prefers-reduced-motion: reduce) {
  .card { transition: none; }
  .card:hover { transform: none; }
}