:root{--fg:#1b1b1b;--muted:#666;--accent:#c0392b;--bg:#fafafa;--card:#fff;--line:#e3e3e3;}
*{box-sizing:border-box}
body{font-family:-apple-system,"Hiragino Kaku Gothic ProN","Meiryo",sans-serif;
 margin:0;color:var(--fg);background:var(--bg);line-height:1.6;}
header{background:#222;color:#fff;padding:12px 16px;}
header a{color:#fff;text-decoration:none;margin-right:16px;}
header .brand{font-weight:bold;font-size:1.1rem;}
main{max-width:960px;margin:0 auto;padding:16px;}
h1{font-size:1.5rem;} h2{font-size:1.2rem;border-left:4px solid var(--accent);padding-left:8px;margin-top:2rem;}
table{width:100%;border-collapse:collapse;background:var(--card);margin:12px 0;font-size:.92rem;}
th,td{border:1px solid var(--line);padding:6px 8px;text-align:left;}
th{background:#f0f0f0;}
.price{font-weight:bold;color:var(--accent);white-space:nowrap;}
.deal-rate{color:#fff;background:var(--accent);border-radius:4px;padding:1px 6px;font-size:.85rem;}
.card{background:var(--card);border:1px solid var(--line);border-radius:8px;padding:12px;margin:8px 0;}
.muted{color:var(--muted);font-size:.85rem;}
a{color:#1565c0;}
.btn{display:inline-block;background:var(--accent);color:#fff;padding:4px 10px;border-radius:4px;text-decoration:none;font-size:.85rem;}
footer{max-width:960px;margin:24px auto;padding:16px;color:var(--muted);font-size:.8rem;border-top:1px solid var(--line);}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:10px;}
input[type=search]{width:100%;padding:8px;font-size:1rem;border:1px solid var(--line);border-radius:6px;}
img{max-width:100%;height:auto;}
/* --- 商品画像カード(価格.com風) --- */
.product-card{display:flex;flex-direction:column;text-decoration:none;color:var(--fg);padding:0;overflow:hidden;}
.product-card:hover{box-shadow:0 2px 8px rgba(0,0,0,.12);}
.product-card .thumb,.thumb{width:100%;aspect-ratio:1/1;display:flex;align-items:center;justify-content:center;background:#f4f4f4;overflow:hidden;}
.thumb img{width:100%;height:100%;object-fit:contain;}
.thumb-noimg{color:#bbb;font-size:.8rem;letter-spacing:.05em;}
.product-card-body{padding:8px 10px;}
.product-name{font-weight:bold;font-size:.95rem;margin-bottom:2px;line-height:1.3;}
/* --- item ページ上部の大きめ画像 --- */
.item-head{display:flex;gap:16px;align-items:flex-start;flex-wrap:wrap;}
.item-photo{flex:0 0 300px;max-width:100%;background:#f4f4f4;border:1px solid var(--line);border-radius:8px;padding:8px;}
.item-photo img{width:100%;height:auto;object-fit:contain;display:block;}
.item-head-body{flex:1 1 260px;min-width:220px;}
/* --- 一覧テーブルの小サムネ(正方形) --- */
.td-thumb{width:56px;padding:4px;}
.thumb-sm{display:inline-block;width:48px;height:48px;object-fit:contain;background:#f4f4f4;border-radius:4px;vertical-align:middle;}
.thumb-noimg-sm{border:1px dashed var(--line);}
@media(max-width:520px){.item-photo{flex-basis:100%;}}