:root {
  --font-heading: 'Zen Old Mincho', serif;
  --font-body: 'Shippori Mincho', serif;
  --font-ui: 'Noto Sans JP', sans-serif;
  --bg-dark: #1a1520;
  --bg-primary: #f5f1eb;
  --bg-alt: #eee8df;
  --fg-primary: #0f2a3f;
  --fg-secondary: #4a6274;
  --accent: #d4764e;
  --blue: #2a6b8a;
  --line: #ddd5ca;
  --radius: 14px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg-primary); color: var(--fg-primary); font-family: var(--font-body); line-height: 1.9; -webkit-font-smoothing: antialiased; }
a { color: var(--blue); }
header { position: sticky; top: 0; z-index: 10; padding: 14px 20px; background: rgba(250,250,247,.94); border-bottom: 1px solid rgba(221,213,202,.65); backdrop-filter: blur(8px); }
header a { display: flex; flex-direction: column; align-items: flex-start; gap: 2px; text-decoration: none; }
.hero { max-width: 1040px; margin: 28px auto 0; padding: 0 20px; }
.hero img { display: block; width: 100%; max-height: 580px; aspect-ratio: 16/9; object-fit: cover; border-radius: var(--radius); background: var(--bg-alt); }
.hero.product-contain img { object-fit: contain; padding: 18px; }
main { max-width: 760px; margin: 0 auto; padding: 34px 24px 72px; }
.breadcrumb { margin-bottom: 28px; font-family: var(--font-ui); font-size: 12px; color: var(--fg-secondary); }
.breadcrumb a { color: inherit; text-decoration: none; }
.eyebrow { display: block; margin-bottom: 10px; font-family: var(--font-ui); font-size: 10px; font-weight: 600; letter-spacing: .22em; color: var(--accent); }
h1 { margin: 0 0 24px; font-family: var(--font-heading); font-size: 30px; font-weight: 600; line-height: 1.55; letter-spacing: .04em; }
h2 { margin: 46px 0 18px; padding-bottom: 8px; border-bottom: 2px solid var(--accent); font-family: var(--font-heading); font-size: 20px; font-weight: 600; letter-spacing: .06em; }
p { margin: 0 0 20px; font-size: 15px; letter-spacing: .02em; }
.lead { color: var(--fg-secondary); font-size: 16px; line-height: 2; }
.gallery { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin: 24px 0; }
.gallery img { display: block; width: 100%; aspect-ratio: 4/3; object-fit: cover; border-radius: 10px; }
.spec { width: 100%; margin: 20px 0 30px; border-collapse: collapse; font-family: var(--font-ui); font-size: 14px; }
.spec th { width: 26%; padding: 12px 14px; background: var(--bg-alt); border-bottom: 1px solid var(--line); text-align: left; font-weight: 500; color: var(--fg-secondary); white-space: nowrap; }
.spec td { padding: 12px 14px; border-bottom: 1px solid var(--line); }
.note { font-family: var(--font-ui); font-size: 12px; color: var(--fg-secondary); }
.official { display: flex; width: fit-content; margin: 24px auto 0; align-items: center; justify-content: center; min-height: 46px; padding: 10px 24px; border: 1.5px solid var(--blue); border-radius: 999px; color: var(--blue); font-family: var(--font-ui); font-size: 13px; font-weight: 600; letter-spacing: .04em; text-decoration: none; transition: .2s; }
.official:hover { background: var(--blue); color: #fff; }
.buy-wrap { text-align: center; margin: 40px 0; }
.buy-btn { display: inline-flex; align-items: center; gap: 8px; background: #d4764e; color: #fff; text-decoration: none; font-family: var(--font-ui); font-size: 15px; font-weight: 600; padding: 16px 40px; border-radius: 60px; letter-spacing: .06em; transition: background .3s, transform .3s; }
.buy-btn:hover { background: #c06840; color: #fff; transform: translateY(-2px); }
.buy-btn svg { flex-shrink: 0; }
.buy-wrap p { font-family: var(--font-ui); font-size: 11px; color: var(--fg-secondary); margin-top: 12px; }
.copyright { margin-top: 48px; padding-top: 22px; border-top: 1px solid var(--line); font-family: var(--font-ui); font-size: 11px; text-align: center; color: var(--fg-secondary); }
.back { display: inline-block; margin-top: 28px; font-family: var(--font-ui); font-size: 13px; color: var(--fg-secondary); text-decoration: none; }
footer { padding: 30px 20px; background: var(--bg-dark); text-align: center; }
footer p { margin: 0; font-family: var(--font-ui); font-size: 11px; color: rgba(245,241,235,.5); }
@media (max-width: 600px) {
  .hero { margin-top: 16px; padding: 0 12px; }
  .hero img { aspect-ratio: 4/3; max-height: none; }
  .hero.product-contain img { padding: 10px; }
  main { padding: 28px 20px 60px; }
  h1 { font-size: 23px; }
  .lead { font-size: 14px; }
  h2 { font-size: 17px; }
  .gallery { grid-template-columns: 1fr; }
  .spec th, .spec td { padding: 10px; font-size: 12px; }
  .official { width: 100%; }
  .buy-btn { width: 100%; justify-content: center; padding: 14px 24px; }
}