:root{
  --bg:#ffffff;
  --fg:#111827;
  --muted:#6b7280;
  --card:#f9fafb;
  --border:#e5e7eb;
  --primary:#2563eb;
  --primary-contrast:#ffffff;
  --danger:#b91c1c;
  --shadow:0 10px 20px rgba(0,0,0,.06);
  --radius:14px;
  color-scheme: light;
}
html[data-theme="dark"]{
  --bg:#000000;
  --fg:#e5e7eb;
  --muted:#9ca3af;
  --card:#0b0b0b;
  --border:#1f1f1f;
  --primary:#60a5fa;
  --primary-contrast:#000000;
  --danger:#f87171;
  --shadow:0 10px 20px rgba(0,0,0,.35);
  color-scheme: dark;
}
*{box-sizing:border-box}
body{
  margin:0;
  font:14px/1.6 system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial;
  background:var(--bg);
  color:var(--fg);
}
a{color:inherit;text-decoration:none}
.container{max-width:1100px;margin:0 auto;padding:0 16px}
.topbar{
  position:sticky;
  top:0;
  z-index:20;
  background:rgba(255,255,255,.72);
  backdrop-filter:saturate(180%) blur(16px);
  border-bottom:1px solid var(--border);
}
html[data-theme="dark"] .topbar{background:rgba(0,0,0,.72)}
.topbar-inner{display:flex;align-items:center;gap:12px;min-height:58px}
.brand{font-weight:900;letter-spacing:.2px;display:inline-flex;align-items:center;gap:8px}
.brand-logo{width:22px;height:22px;flex:0 0 auto}
.spacer{flex:1}
.nav{display:flex;gap:10px;align-items:center}
@media (max-width:720px){.nav{gap:6px}}
.nav-cart{position:relative;display:flex;align-items:center}
.nav-cart-icon{width:20px;height:20px}
.nav-link{padding:8px 10px;border-radius:10px;display:inline-flex;align-items:center;gap:6px}
.nav-icon{width:18px;height:18px;flex:0 0 auto}
.nav-link:hover{background:rgba(0,0,0,.06)}
html[data-theme="dark"] .nav-link:hover{background:rgba(255,255,255,.06)}
.theme-toggle{
  border:1px solid var(--border);
  background:transparent;
  color:var(--fg);
  border-radius:12px;
  padding:8px 10px;
  cursor:pointer;
}
.topbar-detail{
  display:grid;
  grid-template-columns: 1fr auto 1fr;
  align-items:center;
  gap:8px;
}
.topbar-back{
  display:inline-flex;
  align-items:center;
  justify-content:flex-start;
  padding:8px 10px;
  border-radius:10px;
  font-weight:900;
}
.topbar-back:hover{background:rgba(0,0,0,.06)}
html[data-theme="dark"] .topbar-back:hover{background:rgba(255,255,255,.06)}
.topbar-center{
  text-align:center;
  font-weight:900;
  justify-self:center;
}
.topbar-right{
  display:flex;
  justify-content:flex-end;
  position:relative;
}
.topbar-more{
  font-size:22px;
  font-weight:900;
}
.menu{
  position:absolute;
  top:calc(100% + 8px);
  right:0;
  min-width:180px;
  background:var(--bg);
  border:1px solid var(--border);
  border-radius:14px;
  box-shadow:var(--shadow);
  padding:6px;
  display:none;
  z-index:40;
}
.menu.is-open{display:block}
.menu-item{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:flex-start;
  padding:10px 12px;
  border-radius:12px;
  border:1px solid transparent;
  background:transparent;
  color:var(--fg);
  cursor:pointer;
  font-weight:900;
  font-size:12px;
  font-family:inherit;
  text-shadow:0 0 0 currentColor;
}
.menu-item:hover{background:rgba(0,0,0,.06)}
html[data-theme="dark"] .menu-item:hover{background:rgba(255,255,255,.06)}
.content{padding:18px 16px 26px}
.grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:14px;
}
@media (max-width:1100px){.grid{grid-template-columns:repeat(3,1fr)}}
@media (max-width:860px){.grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:520px){.grid{grid-template-columns:1fr}}
.card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  overflow:hidden;
  box-shadow:var(--shadow);
}
.card-body{padding:12px}
.card-title{font-weight:800;margin:0 0 6px;font-size:15px}
.product-desc{padding:14px;margin-top:14px}
.product-desc-title{font-weight:900;margin:0 0 8px}
.product-desc-content{line-height:1.7}
.product-desc-content img{max-width:100%;height:auto;border-radius:12px;display:block;margin:8px 0}
.muted{color:var(--muted)}
.price{font-weight:900}
.product-intro{color:var(--muted);font-size:13px;line-height:1.6;margin:0 0 8px}
.strike-price{margin-left:6px;color:var(--muted);text-decoration:line-through;font-weight:600;font-size:12px}
.product-price{
  color:#ff1f1f;
  font-size:22px;
  font-weight:900;
}
.product-price .price{font-size:28px}
.product-price .strike-price{font-size:14px}
.home-price{
  color:#ff1f1f;
  font-size:16px;
  font-weight:900;
}
.thumb{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  display:block;
  background:rgba(0,0,0,.06);
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:10px 12px;
  border-radius:12px;
  border:1px solid var(--border);
  cursor:pointer;
  background:transparent;
  color:var(--fg);
  font-family:inherit;
  font-size:inherit;
  font-weight:800;
}
.btn:disabled{
  cursor:not-allowed;
  opacity:.7;
}
.btn-primary{
  background:var(--primary);
  border-color:var(--primary);
  color:var(--primary-contrast);
}
.btn-buy-red{
  background:#ff1f1f;
  background:linear-gradient(90deg,#ff4b6e 0%, #ff1f1f 55%, #ff0000 100%);
  border-color:#ff1f1f;
  color:#fff;
}
.btn-buy-red:hover{filter:brightness(1.03)}
.btn-buy-red:active{filter:brightness(.98)}
.btn-buy-red:disabled{
  background:rgba(107,114,128,.25);
  border-color:var(--border);
  color:var(--muted);
}
.btn-primary:disabled{
  background:rgba(107,114,128,.25);
  border-color:var(--border);
  color:var(--muted);
}
.btn-danger{
  background:var(--danger);
  border-color:var(--danger);
  color:#fff;
}
.btn-row{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin-top:10px}
.input, textarea{
  width:100%;
  padding:10px 12px;
  border-radius:12px;
  border:1px solid var(--border);
  background:transparent;
  color:var(--fg);
}
@media (max-width:860px){.input, textarea{font-size:16px}}
textarea{min-height:140px;resize:vertical}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
@media (max-width:720px){.form-row{grid-template-columns:1fr}}
label{display:block;font-weight:800;margin:10px 0 6px}
.alert{
  border:1px solid var(--border);
  background:rgba(37,99,235,.08);
  border-radius:14px;
  padding:10px 12px;
  margin:0 0 14px;
}
.alert-danger{background:rgba(185,28,28,.08)}
.toast{
  position:fixed;
  top:12px;
  left:50%;
  transform:translateX(-50%) translateY(-10px);
  z-index:90;
  max-width:min(520px,calc(100vw - 24px));
  padding:10px 12px;
  border-radius:14px;
  border:1px solid var(--border);
  background:var(--card);
  box-shadow:var(--shadow);
  font-weight:900;
  opacity:0;
  pointer-events:none;
  transition:opacity .18s ease, transform .18s ease;
}
.toast.is-show{
  opacity:1;
  transform:translateX(-50%) translateY(0);
  pointer-events:auto;
}
.toast-ok{
  border-color:rgba(22,163,74,.45);
  background:rgba(22,163,74,.10);
}
.toast-err{
  border-color:rgba(220,38,38,.45);
  background:rgba(220,38,38,.10);
}
.footer{border-top:1px solid var(--border);padding:18px 0}
.footer-inner{display:flex;flex-direction:column;gap:6px;color:var(--muted);align-items:center;text-align:center;font-size:12px;line-height:1.6}
.footer-line a{color:inherit;text-decoration:none}
.footer-line a:hover{text-decoration:underline}
.modal{position:fixed;inset:0;display:none;align-items:center;justify-content:center;padding:18px;z-index:60}
.modal.is-open{display:flex}
.modal-backdrop{position:absolute;inset:0;background:rgba(0,0,0,.5)}
.modal-panel{
  position:relative;
  width:min(420px,100%);
  background:var(--bg);
  border:1px solid var(--border);
  border-radius:18px;
  box-shadow:var(--shadow);
  overflow:hidden;
}
.modal-head{display:flex;align-items:center;justify-content:space-between;padding:12px 14px;border-bottom:1px solid var(--border)}
.modal-title{font-weight:900}
.icon-btn{
  width:34px;height:34px;
  border-radius:12px;
  border:1px solid var(--border);
  background:transparent;
  cursor:pointer;
  color:var(--fg);
  font-size:18px;
  line-height:1;
}
.modal-body{padding:16px}
.qr-wrap{display:flex;justify-content:center}
.qr-img{
  width:min(280px,80vw);
  aspect-ratio:1/1;
  border-radius:16px;
  border:1px solid var(--border);
  background:rgba(0,0,0,.04);
  object-fit:contain;
}
.img-viewer{
  position:absolute;
  inset:0;
  background:rgba(0,0,0,.94);
  display:flex;
  align-items:center;
  justify-content:center;
}
.img-viewer-stage{
  position:relative;
  z-index:1;
  width:100%;
  height:100%;
  display:flex;
  align-items:center;
  justify-content:center;
  padding:16px;
}
.img-viewer-img{
  width:100%;
  height:100%;
  max-width:100%;
  max-height:100%;
  object-fit:contain;
}
.img-viewer-close{
  position:absolute;
  top:12px;
  right:12px;
  z-index:4;
  width:42px;
  height:42px;
  border-radius:14px;
  border:1px solid rgba(255,255,255,.18);
  background:rgba(0,0,0,.25);
  color:#fff;
  cursor:pointer;
  font-size:22px;
  line-height:1;
}
.img-viewer-zones{
  position:absolute;
  inset:0;
  display:flex;
  z-index:3;
}
.img-viewer-zone{
  flex:1;
}
.img-viewer-dots{
  position:absolute;
  left:0;
  right:0;
  bottom:14px;
  display:flex;
  justify-content:center;
  gap:8px;
  padding:0 14px;
  z-index:4;
}
.img-dot{
  width:6px;
  height:6px;
  border-radius:999px;
  background:rgba(255,255,255,.35);
}
.img-dot.is-active{
  background:rgba(255,255,255,.92);
  transform:scale(1.1);
}
.table{width:100%;border-collapse:separate;border-spacing:0 10px}
.table td,.table th{padding:10px 12px;text-align:left}
.table tr{background:var(--card);border:1px solid var(--border)}
.table th{color:var(--muted);font-size:12px;font-weight:900}
.badge{display:inline-flex;padding:4px 8px;border-radius:999px;border:1px solid var(--border);font-weight:900;font-size:12px}