/*
THESIS: 特価を飾るのではなく、価格根拠と期限を一目で比較できる売場にする。
OWN-WORLD: 既存の濃紺面を継承し、価格は琥珀、状態は青緑、警告は赤だけで示す。
STORY: 条件を絞り、根拠を確認し、販売元へ移動または保存する。
FIRST VIEWPORT: 見出し、検索・絞り込み、更新時刻、最初の特価が順に見える。
FORM: Operate。カード壁ではなく、比較できる商品行を基本単位にする。
*/
:root{
  color-scheme:dark;
  --bg:#090c11;--surface:#11161e;--surface-2:#171e28;--line:#2a3442;
  --text:#edf2f7;--sub:#b7c1ce;--muted:#7f8b99;
  --teal:#64d8d0;--amber:#ffb45b;--red:#ff7e86;--blue:#78b7ff;
  --max:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,"Yu Gothic UI","Hiragino Kaku Gothic ProN","Meiryo",sans-serif;font-weight:400;line-height:1.7;letter-spacing:0}
a{color:inherit}
img{max-width:100%;height:auto}
.skip{position:absolute;left:-9999px}.skip:focus{left:12px;top:12px;z-index:30;background:#fff;color:#000;padding:8px}
.site-header{border-bottom:1px solid var(--line);background:rgba(9,10,17,.97)}
.site-header__inner{max-width:var(--max);margin:auto;padding:18px 22px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.logo{font-size:1.35rem;font-weight:800;text-decoration:none;color:var(--teal)}
.global-nav{display:flex;gap:8px;flex-wrap:wrap}
.global-nav a{padding:7px 10px;color:var(--sub);text-decoration:none;border-radius:5px}
.global-nav a:hover,.global-nav a[aria-current=page]{background:var(--surface-2);color:var(--text)}
.deal-main{max-width:var(--max);margin:auto;padding:34px 22px 72px}
.intro{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:28px;align-items:end;padding-bottom:26px;border-bottom:1px solid var(--line)}
.intro h1{font-size:2rem;line-height:1.3;margin:0 0 8px;letter-spacing:0}
.intro p{margin:0;color:var(--sub);max-width:64ch}
.updated{font-variant-numeric:tabular-nums;color:var(--muted);font-size:.88rem;white-space:nowrap}
.deal-tools{padding:22px 0;border-bottom:1px solid var(--line)}
.search-row{display:grid;grid-template-columns:minmax(0,1fr) 150px 110px;gap:10px}
input,select,button{font:inherit}
input[type=search],input[type=number],select{width:100%;min-height:46px;background:var(--surface);border:1px solid var(--line);color:var(--text);border-radius:6px;padding:9px 12px}
button,.button{min-height:44px;border:0;border-radius:6px;background:var(--amber);color:#1b1104;padding:9px 16px;font-weight:750;text-decoration:none;display:inline-flex;align-items:center;justify-content:center;cursor:pointer}
.button.secondary{background:var(--surface-2);color:var(--text);border:1px solid var(--line)}
.button.amber{background:var(--amber);color:#1b1104}
button:hover,.button:hover{filter:brightness(1.06)}
.filter-details{margin-top:12px;background:var(--surface);border:1px solid var(--line);border-radius:7px}
.filter-details summary{cursor:pointer;min-height:48px;padding:11px 14px;font-weight:700;display:flex;align-items:center}
.filter-grid{padding:14px;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;border-top:1px solid var(--line)}
.filter-grid label{color:var(--sub);font-size:.82rem}.filter-grid label span{display:block;margin-bottom:4px}
.filter-actions{display:flex;align-items:end;gap:8px}
.active-filters{display:flex;gap:7px;flex-wrap:wrap;margin-top:12px}
.active-filters strong{font-size:.8rem;color:var(--sub);align-self:center}
.filter-chip{font-size:.8rem;color:var(--sub);background:var(--surface-2);border:1px solid var(--line);padding:5px 9px;border-radius:999px;text-decoration:none}
.filter-chip.applied{color:var(--text);border-color:#36776e}.filter-chip.clear{background:transparent}.quick-links{padding-top:2px;border-top:1px solid var(--line)}
.deal-status{display:flex;justify-content:space-between;align-items:center;gap:18px;margin:24px 0 10px}
.deal-status h2{font-size:1.15rem;margin:0}.deal-status p{margin:0;color:var(--muted);font-size:.88rem}
.deal-list{border-top:1px solid var(--line)}
.deal-row{display:grid;grid-template-columns:136px minmax(0,1fr) 200px;gap:22px;padding:22px 0;border-bottom:1px solid var(--line);position:relative}
.deal-image{aspect-ratio:1;background:#fff;border-radius:6px;overflow:hidden;display:flex;align-items:center;justify-content:center}
.deal-image img{width:100%;height:100%;object-fit:contain}
.deal-image--empty{background:var(--surface);color:var(--muted);font-size:.75rem;text-align:center;padding:8px}
.deal-kicker{display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin-bottom:5px;color:var(--muted);font-size:.78rem}
.badge{border:1px solid var(--line);border-radius:999px;padding:2px 7px;color:var(--sub)}
.badge.deal{color:var(--amber);border-color:#5f4728}.badge.reward{color:var(--teal);border-color:#285d57}.badge.ending{color:var(--red);border-color:#633838}
.deal-title{font-size:1.12rem;line-height:1.5;margin:0 0 8px}.deal-title a{text-decoration:none}.deal-title a:hover{text-decoration:underline}
.deal-summary{color:var(--sub);margin:0;max-width:66ch;font-size:.92rem}
.deal-note{color:var(--muted);font-size:.8rem;margin:9px 0 0}
.price-panel{text-align:right;display:flex;flex-direction:column;align-items:flex-end}
.price{font-size:1.55rem;font-weight:800;line-height:1.25;font-variant-numeric:tabular-nums;color:var(--text)}
.reference{color:var(--muted);font-size:.8rem;text-decoration:line-through;font-variant-numeric:tabular-nums}
.shipping,.deadline{font-size:.78rem;color:var(--sub);font-variant-numeric:tabular-nums}
.deadline{margin-top:7px}.deal-actions{display:flex;gap:7px;margin-top:auto;padding-top:13px}
.save-button{background:transparent;color:var(--sub);border:1px solid var(--line);min-width:70px}.save-button[aria-pressed=true]{color:var(--teal);border-color:#36776e}
.ad-label{font-size:.7rem;color:var(--muted);margin-top:5px}
.empty{padding:44px 0;text-align:center;color:var(--sub)}
.pager{display:flex;justify-content:center;gap:10px;margin:30px 0}
.notice{padding:12px 14px;background:var(--surface);border:1px solid var(--line);border-radius:6px;color:var(--sub);font-size:.84rem}
.detail-layout{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:34px}
.detail-title{font-size:2rem;line-height:1.4;margin:8px 0 18px}
.detail-image{background:#fff;border-radius:8px;min-height:260px;display:flex;align-items:center;justify-content:center;overflow:hidden}
.detail-image img{max-height:460px;object-fit:contain}
.detail-copy{max-width:70ch;color:var(--sub)}
.purchase{background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:20px;align-self:start;position:sticky;top:18px}
.purchase .price{font-size:2rem}.purchase .button{width:100%;margin-top:14px}
.purchase-mobile{display:none}
.facts{display:grid;grid-template-columns:140px 1fr;margin:26px 0;border-top:1px solid var(--line)}
.facts dt,.facts dd{margin:0;padding:10px 0;border-bottom:1px solid var(--line)}.facts dt{color:var(--muted)}.facts dd{color:var(--sub)}
.comparison{width:100%;border-collapse:collapse;margin-top:14px}.comparison th,.comparison td{padding:10px;border-bottom:1px solid var(--line);text-align:left}.comparison td:nth-child(2){text-align:right;font-variant-numeric:tabular-nums}
.marketplace-search{margin-top:28px}.marketplace-search p{max-width:70ch;color:var(--muted)}.marketplace-actions{display:flex;flex-wrap:wrap;gap:10px}.update-history td:first-child{width:150px;white-space:nowrap;font-variant-numeric:tabular-nums}.update-history td:nth-child(2){text-align:left;font-variant-numeric:normal}
.saved-grid{display:grid;grid-template-columns:1fr;gap:0}.saved-error{color:var(--red)}
.site-footer{border-top:1px solid var(--line);padding:25px 22px 42px;color:var(--muted);font-size:.8rem}
.site-footer__inner{max-width:var(--max);margin:auto}.site-footer nav{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:8px}.site-footer a{color:var(--sub)}
:focus-visible{outline:2px solid var(--teal);outline-offset:3px}
@media(max-width:850px){
  .filter-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .deal-row{grid-template-columns:110px minmax(0,1fr)}.price-panel{grid-column:2;text-align:left;align-items:flex-start}.deal-actions{margin-top:10px}
  .detail-layout{grid-template-columns:1fr}.purchase{display:none}
  .purchase-mobile{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:10px;background:var(--surface);border:1px solid var(--line);border-radius:7px;padding:13px;margin:0 0 18px}.purchase-mobile>div{display:flex;flex-direction:column}.purchase-mobile .price{font-size:1.45rem}.purchase-mobile .button{flex:0 0 auto}.purchase-mobile .ad-label{grid-column:1/-1;margin:0}
}
@media(max-width:600px){
  .site-header__inner{padding:14px 16px;align-items:flex-start;flex-direction:column;gap:10px}.global-nav{width:100%;display:grid;grid-template-columns:repeat(4,1fr);gap:2px}.global-nav a{text-align:center;padding:8px 2px;font-size:.78rem}
  .deal-main{padding:25px 16px 54px}.intro{grid-template-columns:1fr;gap:12px}.updated{white-space:normal}
  .search-row{grid-template-columns:1fr 1fr}.search-row input{grid-column:1/-1}.filter-grid{grid-template-columns:1fr}.filter-actions{align-items:stretch}
  .deal-status{display:block}.deal-status p{margin-top:4px}
  .deal-row{grid-template-columns:84px minmax(0,1fr);gap:13px;padding:18px 0}.deal-kicker{font-size:.7rem}.deal-title{font-size:1rem}.deal-summary{display:none}.price{font-size:1.32rem}
  .deal-actions{width:100%}.deal-actions .button,.deal-actions button{flex:1;padding:8px}
  .facts{grid-template-columns:105px 1fr}.comparison{font-size:.8rem}
  .purchase-mobile{grid-template-columns:1fr;align-items:stretch}.purchase-mobile .button,.purchase-mobile .save-button{width:100%}.purchase-mobile .ad-label{grid-column:auto}
  .intro h1,.detail-title{font-size:1.45rem}
}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}