:root {
  color-scheme: dark;
  --bg: #050400;
  --surface: #161103;
  --paper: #fbf6e3; /* 商品写真の背景。写真の色が正しく見えるよう明るいまま */
  --line: #3d2e08;
  --text: #fff8dc;
  --muted: #c9b878;
  --gold: #ffd21f;
  --gold-hi: #fff4a8;
  --gold-lo: #a86c00;
  --on-gold: #241400;
  --foil: linear-gradient(100deg, #c98f00 0%, #ffd21f 22%, #fff9c9 38%, #ffcb05 55%, #d9a000 72%, #ffe35a 88%, #e0a200 100%);
  --foil-text: linear-gradient(100deg, #e0a200 0%, #ffd21f 18%, #fff9c9 32%, #ffcb05 48%, #e8ab00 62%, #ffe35a 78%, #fff4a8 88%, #e0a200 100%);
  --serif: 'Shippori Mincho B1', 'Hiragino Mincho ProN', 'Yu Mincho', serif;
  --sans: 'Noto Sans JP', 'Hiragino Sans', 'Yu Gothic', sans-serif;
}
* { box-sizing: border-box; }
body { margin: 0; background: radial-gradient(ellipse 90% 460px at 50% 0, rgb(255 190 0 / .2), transparent) no-repeat, var(--bg); color: var(--text); font-family: var(--sans); line-height: 1.7; }
img { display: block; max-width: 100%; }
a { color: inherit; }
h1, h2 { margin: 0; line-height: 1.35; }
[hidden] { display: none !important; }
:focus-visible { outline: 2px solid var(--gold-hi); outline-offset: 2px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }

.foil { background: var(--foil-text); background-size: 220% 100%; -webkit-background-clip: text; background-clip: text; color: transparent; }
@keyframes shine { to { background-position: -220% 0; } }

.demo-banner { margin: 0; padding: 6px 16px; background: var(--surface); color: var(--muted); font-size: 12px; text-align: center; }

/* header */
.site-header { display: flex; align-items: center; justify-content: space-between; gap: 16px; max-width: 1200px; margin: 0 auto; padding: 20px 24px 0; }
.site-nav { display: flex; gap: 20px; font-size: 14px; }
.site-nav a { display: inline-flex; align-items: center; min-height: 44px; color: var(--muted); text-decoration: none; }
.site-nav a:hover, .site-nav a[aria-current='page'] { color: var(--gold); }
.logo { display: inline-flex; align-items: baseline; gap: 8px; font: 700 22px var(--serif); text-decoration: none; }
.logo-en { font: 800 14px var(--serif); letter-spacing: .16em; color: var(--muted); }
.logo-en .foil { font-size: 1.35em; letter-spacing: 0; }

/* catalog */
.catalog { max-width: 1200px; margin: 0 auto; padding: 0 24px 64px; }
.intro { padding: 40px 0 28px; }
.intro h1 { font: 800 clamp(36px, 6.5vw, 72px)/1.2 var(--serif); filter: drop-shadow(0 2px 16px rgb(255 190 0 / .35)); }
.intro h1 .foil { display: inline-block; animation: shine 8s linear infinite; }
.intro p { margin: 8px 0 0; color: var(--muted); font-size: 15px; }

.tabs { display: flex; gap: 24px; margin-bottom: 16px; border-bottom: 1px solid var(--line); }
.tabs a { display: inline-flex; align-items: center; min-height: 44px; margin-bottom: -1px; border-bottom: 2px solid transparent; color: var(--muted); font: 500 15px var(--sans); text-decoration: none; }
.tabs a:hover { color: var(--text); }
.tabs a[aria-current='page'] { border-bottom-color: var(--gold); color: var(--gold); font-weight: 700; }

.filters { display: flex; flex-wrap: wrap; gap: 8px; }
.filters .search { flex: 1 1 240px; }
input, select { width: 100%; min-height: 40px; padding: 0 12px; border: 1px solid var(--line); border-radius: 6px; background: var(--surface); color: var(--text); font: 400 14px var(--sans); }
input::placeholder { color: var(--muted); }

.result-bar { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin: 20px 0 12px; }
.result-count { margin: 0; color: var(--gold); font-size: 14px; font-weight: 700; }
.pr-note { display: flex; align-items: center; gap: 8px; margin: 0 0 16px; color: var(--muted); font-size: 12px; line-height: 1.6; }
.pr-badge { flex: none; padding: 1px 6px; border: 1px solid var(--muted); border-radius: 3px; color: var(--text); font: 700 11px/1.4 var(--sans); letter-spacing: .08em; }
.sort select { min-height: 36px; border-color: transparent; background: none; color: var(--muted); text-align: right; }

.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 32px 20px; }
.card { position: relative; display: flex; flex-direction: column; width: 100%; padding: 0; border: 0; background: none; color: inherit; font: inherit; text-align: left; cursor: pointer; }
.card-img, .detail-img { position: relative; display: grid; place-items: center; aspect-ratio: 1; background: var(--paper); }
/* iOS Safari は縦並びの flex 内で幅が伸縮で決まる要素に aspect-ratio を効かせず、高さ0になる。幅を明示する */
.card-img { flex-shrink: 0; width: 100%; border-radius: 8px; transition: box-shadow .15s; }
.card:hover .card-img { box-shadow: 0 0 0 1px var(--gold), 0 0 24px rgb(255 210 31 / .45); }
.card:hover .card-title { text-decoration: underline; }
/* 縦長の写真で枠が伸びないよう、枠の外寸に合わせて配置する */
.card-img img, .detail-img img { position: absolute; inset: 0; width: 100%; height: 100%; padding: 12px; object-fit: contain; mix-blend-mode: multiply; }
.no-img { font: 700 48px var(--serif); color: var(--gold-lo); }
.karat-badge { position: absolute; top: 8px; left: 8px; padding: 0 8px; border-radius: 4px; font-size: 12px; font-weight: 700; line-height: 22px; }
.karat-badge.k24 { background: var(--foil); color: var(--on-gold); }
.karat-badge.k18 { background: var(--on-gold); color: var(--gold); }
.card-body { display: flex; flex: 1; flex-direction: column; padding-top: 10px; }
.card-brand { margin: 0; color: var(--gold); font-size: 12px; font-weight: 500; }
.card-title { display: -webkit-box; overflow: hidden; font-size: 14px; line-height: 1.5; -webkit-box-orient: vertical; -webkit-line-clamp: 2; }
.card-tags { margin: 4px 0 0; color: var(--muted); font-size: 12px; }
.card-foot { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 2px 8px; margin-top: auto; padding-top: 6px; }
.card-price, .offer-price { font-weight: 700; font-variant-numeric: tabular-nums; }
.card-price { color: var(--gold-hi); font-size: 17px; }
.card-shops { color: var(--muted); font-size: 12px; }

.empty { padding: 56px 0; color: var(--muted); text-align: center; }
.more { display: flex; justify-content: center; margin-top: 40px; }
.more[hidden] { display: none; }
.loading { color: var(--muted); font-size: 13px; letter-spacing: .08em; }
.loading[hidden], .more-manual[hidden] { display: none; }
.more-manual { display: grid; justify-items: center; gap: 12px; }
.more-status { margin: 0; color: var(--muted); font-size: 13px; font-variant-numeric: tabular-nums; }
.btn { min-height: 44px; padding: 0 32px; border: 0; border-radius: 999px; background: var(--foil); color: var(--on-gold); font: 700 14px var(--sans); cursor: pointer; transition: box-shadow .15s; }
.btn:hover { box-shadow: 0 0 24px rgb(255 210 31 / .6); }
.external { margin-top: 56px; padding-top: 32px; border-top: 1px solid var(--line); }
.shopify-tag { display: inline-block; padding: 1px 6px; border: 1px solid var(--gold-lo); border-radius: 3px; color: var(--gold); font: 700 10px/1.4 var(--sans); letter-spacing: .06em; vertical-align: 1px; }
.shopify-note { margin: 24px 0 0; color: var(--muted); font-size: 12px; line-height: 1.7; }
.card.stale .card-price { color: var(--muted); font-size: 13px; font-weight: 500; }
a.card { text-decoration: none; }
.external h2 { color: var(--gold); font: 700 20px var(--serif); }
.external p { margin: 6px 0 16px; color: var(--muted); font-size: 13px; }
.external-links { display: flex; flex-wrap: wrap; gap: 12px; }
.external-link { display: inline-flex; align-items: center; min-height: 44px; padding: 0 24px; border: 1px solid var(--gold-lo); border-radius: 999px; color: var(--gold-hi); font-size: 14px; font-weight: 500; text-decoration: none; }
.external-link:hover { border-color: var(--gold); background: rgb(255 210 31 / .08); }
.karat-note { margin: 32px 0 0; color: var(--muted); font-size: 12px; }
.karat-note b { color: var(--gold); }

/* column */
.article { max-width: 720px; margin: 0 auto; padding: 32px 24px 72px; }
.article h1 { font: 800 clamp(28px, 5vw, 44px)/1.3 var(--serif); }
.article h2 { margin: 40px 0 8px; color: var(--gold); font: 700 21px/1.4 var(--serif); }
.article p, .article li { line-height: 1.9; }
.article p { margin: 0 0 12px; }
.article ul { margin: 0; padding-left: 1.3em; }
.article li + li { margin-top: 6px; }
.article b { color: var(--gold-hi); }
.article-lead { margin-top: 14px !important; color: var(--muted); }
.article-back { font-size: 13px; }
.article-back a { color: var(--muted); }
.article-cta { margin-top: 40px !important; text-align: center; }
.article-cta .btn { display: inline-flex; align-items: center; text-decoration: none; }
.column-list { margin-top: 28px !important; padding: 0 !important; list-style: none; border-top: 1px solid var(--line); }
.column-list li { margin: 0 !important; border-bottom: 1px solid var(--line); }
.column-list a { display: block; padding: 18px 0; text-decoration: none; }
.column-text { display: block; min-width: 0; }
.column-list time { display: block; color: var(--muted); font-size: 12px; font-variant-numeric: tabular-nums; letter-spacing: .04em; }
.column-list strong { display: block; color: var(--gold-hi); font: 700 18px/1.5 var(--serif); }
.column-text > span { display: block; margin-top: 2px; color: var(--muted); font-size: 13px; line-height: 1.7; }
.article-date { margin: 10px 0 0 !important; color: var(--muted); font-size: 13px; font-variant-numeric: tabular-nums; }
.column-list a:hover strong { text-decoration: underline; }

/* detail */
.detail { width: min(560px, calc(100% - 24px)); max-height: 90vh; padding: 0; overflow: auto; border: 1px solid var(--gold-lo); border-radius: 12px; background: var(--surface); color: var(--text); box-shadow: 0 0 48px rgb(255 210 31 / .25); }
.detail::backdrop { background: rgb(0 0 0 / .75); }
.detail-img { aspect-ratio: 16 / 9; }
.detail:focus { outline: none; }
/* iOS Safari はボタンに既定の余白と見た目を付け、「×」の文字も中心からずれるので、余白を消して×は線で描く */
.detail-close { position: absolute; top: 8px; right: 8px; z-index: 1; box-sizing: border-box; width: 44px; height: 44px; min-width: 44px; aspect-ratio: 1; padding: 0; margin: 0; border: 0; border-radius: 50%; background: var(--on-gold); cursor: pointer; -webkit-appearance: none; appearance: none; -webkit-tap-highlight-color: transparent; }
.detail-close::before, .detail-close::after { content: ''; position: absolute; top: 50%; left: 50%; width: 20px; height: 2px; border-radius: 1px; background: var(--gold); }
.detail-close::before { transform: translate(-50%, -50%) rotate(45deg); }
.detail-close::after { transform: translate(-50%, -50%) rotate(-45deg); }
#detail-body > :not(.detail-img) { margin-left: 20px; margin-right: 20px; }
#detail-body .card-brand { margin-top: 16px; }
#detail-body h2 { margin-top: 2px; font-size: 17px; font-weight: 500; line-height: 1.5; }
.offers { margin-top: 16px; margin-bottom: 20px; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.offers li { border-bottom: 1px solid var(--line); }
.offer { display: grid; grid-template-columns: 1fr auto; gap: 0 12px; padding: 12px 0; text-decoration: none; }
a.offer:hover strong { text-decoration: underline; }
.offer-main { display: flex; flex-direction: column; min-width: 0; font-size: 14px; }
.offer-sub { color: var(--muted); font-size: 12px; }
.offer-price { color: var(--gold-hi); font-size: 16px; text-align: right; }
.offers li:first-child .offer-price { color: var(--gold); }
.offer-go { grid-column: 1 / -1; color: var(--muted); font-size: 12px; text-align: right; }

/* footer */
.footer { padding: 24px; border-top: 1px solid var(--line); color: var(--muted); font-size: 12px; text-align: center; }
.footer p { margin: 2px 0; }
.footer a { color: inherit; }
.footer-links { display: flex; justify-content: center; gap: 20px; margin-top: 12px !important; }
.footer-links a { text-decoration: none; }
.footer-links a:hover { color: var(--text); text-decoration: underline; }
.legal h2 { font-size: 18px; }
.legal a { color: var(--gold); }
.legal-date { margin-top: 40px !important; color: var(--muted); font-size: 13px; text-align: right; }
.table-wrap { overflow-x: auto; margin: 12px 0 16px; }
.table-wrap table { width: 100%; min-width: 520px; border-collapse: collapse; font-size: 14px; line-height: 1.7; }
.table-wrap th, .table-wrap td { padding: 10px 12px; border: 1px solid var(--line); text-align: left; vertical-align: top; }
.table-wrap th { background: var(--surface); color: var(--gold); font-weight: 700; white-space: nowrap; }
.footer .footer-mark { display: flex; align-items: baseline; justify-content: center; gap: 10px; margin-bottom: 10px; letter-spacing: .1em; }
.footer-mark .foil { font: 800 28px var(--serif); letter-spacing: .14em; }

@media (max-width: 640px) {
  .site-header { padding: 16px 16px 0; }
  .catalog { padding: 0 16px 48px; }
  .article { padding: 24px 16px 56px; }
  .column-list strong { font-size: 16px; }
  .intro { padding: 28px 0 20px; }
  .filters .search { flex-basis: 100%; }
  .filters label:not(.search) { flex: 1 1 calc(50% - 4px); min-width: 0; }
  .grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px 12px; }
  .card-price { font-size: 16px; }
}
@media (prefers-reduced-motion: reduce) {
  *, .intro h1 .foil { transition: none !important; animation: none !important; }
}

/* brand pages（server/brand-page.ts） */
.breadcrumb { margin: 24px 0 0; color: var(--muted); font-size: 13px; }
.breadcrumb a { color: var(--muted); }
.brand-stats { color: var(--gold) !important; font-size: 13px !important; }
.external-link small { margin-left: 8px; color: var(--muted); font-size: 12px; }
@media (max-width: 640px) {
  .site-nav { gap: 14px; font-size: 13px; }
  .logo { font-size: 20px; }
}