:root{--bg:#ffffff;--fg:#0f172a;--sub:#64748b;--pri:#2563eb;--br:#e5e7eb;--card:#fff;--shadow:0 8px 24px rgba(2,6,23,.06)}
*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Noto Sans JP',sans-serif;background:#f1f5f9;color:var(--fg)}
a{color:var(--pri);text-decoration:none}
.site-header{position:sticky;top:0;background:var(--card);border-bottom:1px solid var(--br);display:flex;gap:16px;align-items:center;justify-content:space-between;padding:10px 16px;z-index:10;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:10px}.brand .logo{height:28px;width:auto;border-radius:6px}.brand .title{font-weight:800}
.container{max-width:1100px;margin:20px auto;padding:0 16px}
.search{display:flex;gap:8px;align-items:center}.search input,.search select{padding:12px;border:1px solid var(--br);border-radius:12px;background:#fff;font-size:16px}
.btn{display:inline-block;background:#e5e7eb;border:1px solid var(--br);padding:.7em 1.1em;border-radius:12px}
.btn.primary{background:var(--pri);border-color:var(--pri);color:#fff}
.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.card{background:var(--card);border:1px solid var(--br);border-radius:16px;box-shadow:var(--shadow);overflow:hidden;display:flex;flex-direction:column}
.card .thumb img{width:100%;height:auto;display:block}
.card .body{padding:14px}.card .title{font-size:18px;line-height:1.5;margin:.2em 0 .4em 0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card .meta{display:flex;gap:8px;align-items:center;color:var(--sub);font-size:12px;margin-bottom:6px}.price{font-weight:800;background:#f8fafc;border:1px solid #e2e8f0;border-radius:999px;padding:.1em .6em}
.cap{font-size:13px;color:#6b7280}
.site-footer-home{padding:16px;text-align:center;color:#64748b}
.site-footer{margin-bottom: 120px; padding:16px;text-align:center;color:#64748b}
.pr { font-size:12px; text-align:right; padding:0px 15px; }
/* --- v1.3.1: smartphone 2-column grid & smaller typography --- */
@media(max-width:640px){
  .grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}
  .card .body{padding:10px}
  .card .title{font-size:14px}
  .btn{font-size:14px;padding:.55em .8em;border-radius:10px}
  .price{font-size:12px}
}


/* --- v1.3.3: title at top-right, mobile search stacking --- */
.site-header .brand{margin-left:auto}
@media(max-width:640px){
  .search{flex-direction:column; align-items:stretch}
  .search .btn{width:100%}
  .search input, .search select{width:100%}
}


/* --- v1.3.4: site header layout (title left, search right; cat under title, button under input) --- */
.site-bar{max-width:1100px;margin:0 auto;padding:8px 16px;display:grid;grid-template-columns:1fr 1fr;gap:12px;align-items:center}
.brand-left{display:flex;align-items:center;gap:10px}
.under-left{margin-top:6px}
.site-left{display:flex;flex-direction:column}
.site-right .search{display:flex;flex-direction:column;align-items:stretch;gap:6px}
.site-right .search input{width:100%}
.site-right .search .btn{width:100%}
@media(min-width:901px){
  .site-right .search{flex-direction:column}
}
@media(max-width:640px){
  .site-bar{grid-template-columns:1fr}
  .site-right{order:2}
  .site-left{order:1}
}


/* --- v1.3.5: header left title / right search; bottom row controls right-aligned; desktop horizontal --- */
.site-header .shell{max-width:1100px;margin:0 auto;padding:8px 16px}
.site-header .row{display:grid;grid-template-columns:1fr 1fr;gap:12px;align-items:center}
.site-header .row.top .search-line{display:flex; justify-content:flex-end}
.site-header .row.top .search-line input{width:100%; max-width:420px}
.site-header .row.bottom .controls{display:flex; justify-content:flex-end}
.controls-line{display:flex; gap:8px; align-items:center; justify-content:flex-end}
.icon-btn{display:inline-flex; align-items:center; justify-content:center; width:42px; height:42px; border-radius:12px; border:1px solid var(--br); background:#e5e7eb; font-size:18px}
.icon-btn:hover{background:#e2e8f0}
@media(max-width:900px){
  .site-header .row{grid-template-columns:1fr 1fr}
  .site-header .row.top .search-line{justify-content:flex-end}
  .site-header .row.bottom .controls{justify-content:flex-end}
  .controls-line select{max-width:60%}
}
@media(max-width:640px){
  .site-header .row{grid-template-columns:1fr}
  .row.top .right{order:2}
  .row.top .left{order:1}
  .row.bottom .left{display:none}
  .controls-line{justify-content:flex-end}
  .site-header .row.top .search-line input{max-width:100%}
}


/* --- v1.3.6: desktop header left title / right controls; mobile overlay search; styled inputs --- */
.site-topbar{max-width:1100px;margin:0 auto;padding:10px 16px;display:flex;align-items:center;gap:16px;justify-content:space-between}
.brand-left{display:flex;align-items:center;gap:10px}
.controls-inline{display:flex;align-items:center;gap:10px}
.controls-inline .mobile-only{display:none}
.search-form{display:flex;align-items:center;gap:10px}
.input-wrap input{height:42px;border:1px solid var(--br);border-radius:12px;padding:0 14px;width:260px;background:#fff}
.select-wrap select{height:42px;border:1px solid var(--br);border-radius:12px;padding:0 38px 0 14px;appearance:none;background:#fff url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 24 24" fill="%23677" ><path d="M7 10l5 5 5-5z"/></svg>') no-repeat right 12px center/16px}
.icon-btn{display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;border-radius:12px;border:1px solid var(--br);background:#f1f5f9;font-size:18px}
.icon-btn:hover{background:#e2e8f0}

/* Mobile overlay search */
.search-overlay{position:fixed;inset:0;background:rgba(0,0,0,.5);display:none;align-items:center;justify-content:center;z-index:100}
.search-overlay.open{display:flex}
.search-panel{width:min(720px,92%);background:#fff;border-radius:16px;padding:16px;box-shadow:0 10px 30px rgba(0,0,0,.2)}
.overlay-form{display:flex;flex-direction:column;gap:10px}
.input-wrap.large input{height:56px;font-size:18px;border-radius:14px}
.select-wrap.large select{height:56px;font-size:18px;border-radius:14px}
.icon-btn.inside{position:absolute;right:10px;top:50%;transform:translateY(-50%);width:46px;height:46px}
.input-wrap.large{position:relative}
.overlay-close{margin-top:8px;width:100%;height:44px;border-radius:12px;border:1px solid var(--br);background:#f8fafc}

/* Responsive */
@media(max-width:900px){
  .controls-inline .search-form{display:none}
  .controls-inline .mobile-only{display:inline-flex}
}


/* --- v1.3.6: sticky buy bar on product page --- */
.buy-bar{padding-bottom: 80px; position:fixed;left:0;right:0;bottom:0;background-color: #f7f7f7; backdrop-filter:saturate(180%) blur(8px);border-top:1px solid var(--br);z-index:90}
.buy-inner{max-width:1100px;margin:0 auto;padding:10px 16px;display:flex;align-items:center;gap:16px;justify-content:space-between}
.buy-inner .price{font-weight:800;font-size:22px}
.buy-inner .btn.buy{padding:.8em 1.6em;border-radius:999px;background:#111827;color:#fff;border:1px solid #111827}
.buy-inner .btn.buy:hover{opacity:.9}
@media(max-width:640px){
  .buy-inner .price{font-size:18px}
}


/* --- v1.3.7: accessibility polish & safe-area --- */
:focus-visible{outline:3px solid #6366f1; outline-offset:2px; border-radius:10px}
.icon-btn:focus-visible{outline:3px solid #6366f1}
.buy-bar{padding-bottom:calc(env(safe-area-inset-bottom) + 0px)}


/* --- v1.3.8: よく見られている商品 & square logo --- */
/* square logo on public header */
.brand-left .logo{width:32px;height:32px;object-fit:cover;border-radius:6px}

/* Related popular */
.related {
  max-width: 960px; /* 商品詳細の幅に合わせる */
  margin: 40px auto; /* 中央寄せ + 上下余白 */
  padding: 0 5px; /* スマホでの左右余白 */
}

.popular-wrap{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}
.pop-card{display:flex;flex-direction:column;border:1px solid var(--br);border-radius:12px;background:#fff;overflow:hidden}
.pop-card .thumb{aspect-ratio:1/1;overflow:hidden}
.pop-card .thumb img{width:100%;height:100%;object-fit:cover;display:block}
.pop-card .meta{padding:8px}
.pop-card .meta .t{font-size:14px;line-height:1.4;height:2.8em;overflow:hidden}
.pop-card .meta .p{font-weight:700;margin-top:4px}

/* Mobile: horizontal scroll with snap */
@media(max-width:900px){
  .popular-wrap{display:flex;gap:10px;overflow-x:auto;padding-bottom:6px;scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch}
  .pop-card{min-width:56%;max-width:56%;scroll-snap-align:start}
}
@media(max-width:480px){
  .pop-card{min-width:70%;max-width:70%}
}

#products-grid { gap: 12px; }
#load-more { margin: 16px auto 40px; display: block; max-width: 360px; }

@media(max-width:640px){
  #load-more {
    font-size:14px;
    padding:0.7em 1.2em;
    border-radius:10px;
  }
}

.sns-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  color: #666;
  transition: background 0.2s, color 0.2s;
}
.sns-btn:hover {
  background: #888;
  color: #fff;
}
.sns-btn svg {
  width: 20px;
  height: 20px;
}