:root {
  color-scheme: light;
  --ink: #243042;
  --muted: #6c7584;
  --paper: #fffaf5;
  --card: #ffffff;
  --accent: #ef6d4a;
  --accent-dark: #c94f30;
  --line: #eadfd6;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background: var(--paper);
  font-family: "Noto Sans JP", "Yu Gothic UI", "Yu Gothic", sans-serif;
}

.hero {
  overflow: hidden;
  color: #fff;
  background:
    radial-gradient(circle at 88% 20%, rgba(255,255,255,.2) 0 6rem, transparent 6.1rem),
    linear-gradient(135deg, #f47c59, #e95e3d 62%, #c94f30);
}

.hero-inner {
  width: min(1080px, calc(100% - 40px));
  margin: 0 auto;
  padding: 32px 0 30px;
}

.eyebrow {
  margin: 0 0 8px;
  font-size: .76rem;
  font-weight: 800;
  letter-spacing: .18em;
  opacity: .86;
}

h1 {
  margin: 0;
  font-size: clamp(1.9rem, 5vw, 2.9rem);
  line-height: 1.12;
  letter-spacing: -.04em;
}

h1 span { font-size: .62em; letter-spacing: -.02em; }

.lead {
  max-width: 620px;
  margin: 12px 0 0;
  font-size: clamp(.88rem, 2vw, 1rem);
  line-height: 1.65;
  opacity: .94;
}

main {
  width: min(1080px, calc(100% - 40px));
  margin: 0 auto;
  padding: 48px 0 76px;
}

.section-title {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 20px;
}

.section-title p {
  margin: 0 0 4px;
  color: var(--accent-dark);
  font-size: .72rem;
  font-weight: 900;
  letter-spacing: .16em;
}

.section-title h2 { margin: 0; font-size: 1.55rem; }

.section-title > span {
  padding: 6px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  background: #fff;
  font-size: .8rem;
  font-weight: 700;
}

.collection-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr));
  gap: 18px;
}

.collection-card {
  display: flex;
  min-height: 224px;
  flex-direction: column;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 22px;
  color: inherit;
  background: var(--card);
  box-shadow: 0 12px 35px rgba(82, 52, 35, .07);
  text-decoration: none;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}

.collection-card:hover,
.collection-card:focus-visible {
  transform: translateY(-3px);
  border-color: #efb39f;
  box-shadow: 0 18px 42px rgba(82, 52, 35, .12);
  outline: none;
}

.card-top { display: flex; align-items: center; justify-content: space-between; gap: 12px; }

.subject,
.count {
  font-size: .75rem;
  font-weight: 800;
}

.subject { color: var(--accent-dark); }
.count { color: var(--muted); }
.collection-card h3 { margin: 22px 0 4px; font-size: 1.4rem; }
.collection-card h3 + p { margin: 0; color: var(--muted); font-size: .84rem; font-weight: 700; }
.description { margin: 18px 0 26px; color: #525d6d; font-size: .92rem; line-height: 1.75; }
.open-label { margin-top: auto; color: var(--accent-dark); font-size: .88rem; font-weight: 900; }

noscript { display: block; padding: 28px; border: 1px solid var(--line); border-radius: 16px; background: #fff; }

footer {
  padding: 24px 20px 30px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  text-align: center;
  font-size: .75rem;
}

@media (max-width: 560px) {
  .hero-inner { width: min(100% - 32px, 1080px); padding: 24px 0 22px; }
  main { width: min(100% - 28px, 1080px); padding: 34px 0 56px; }
  .collection-card { min-height: 210px; padding: 22px; border-radius: 18px; }
}

@media (prefers-reduced-motion: reduce) {
  .collection-card { transition: none; }
}