:root{
  --bg:#eef4fb;
  --card:#ffffff;
  --text:#0f2340;
  --muted:#58708f;
  --line:#d8e4f3;
  --blue:#0b5fc8;
  --blue-dark:#083f87;
  --soft:#f4f8fe;
  --orange:#f59e0b;
  --orange-soft:#fff3dd;
  --green:#16a34a;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  color:var(--text);
  background:linear-gradient(180deg,#f4f8fd 0%, #e9f1fb 100%);
  line-height:1.55;
}
img{max-width:100%;display:block}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{width:min(1120px,calc(100% - 28px));margin:0 auto}
.site-top{
  background:linear-gradient(135deg,#0a2d58,#0f5fbd);
  color:#fff;
  box-shadow:0 10px 30px rgba(9,48,98,.22);
}
.site-top-inner{
  min-height:84px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:14px 0;
}
.site-logo{width:min(220px,42vw);height:auto}
.site-top-nav{display:flex;flex-wrap:wrap;gap:14px}
.site-top-nav a{
  color:#fff;
  font-weight:700;
  opacity:.95;
}
main.wrap{padding:22px 0 40px}
.breadcrumbs{
  display:flex;flex-wrap:wrap;gap:8px;align-items:center;
  margin:0 0 18px;
  color:var(--muted);
  font-size:.95rem;
}
.breadcrumbs .sep{color:#9db0c8}
.product-card,.section,.related-card{
  background:rgba(255,255,255,.96);
  border:1px solid var(--line);
  border-radius:24px;
  box-shadow:0 16px 40px rgba(18,40,74,.07);
}
.product-card{padding:22px}
.product-layout{
  display:grid;
  grid-template-columns:minmax(280px,420px) minmax(0,1fr);
  gap:24px;
  align-items:start;
}
.media-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:20px;
  overflow:hidden;
  padding:14px;
}
.media-card img{
  width:100%;
  height:auto;
  object-fit:contain;
  border-radius:14px;
  background:#fff;
}
.product-copy h1{
  margin:0 0 14px;
  font-size:clamp(1.85rem,3.3vw,2.7rem);
  line-height:1.08;
  letter-spacing:-.03em;
}
.meta-row,.metric-row,.cta-row{
  display:flex;flex-wrap:wrap;gap:10px;align-items:center;
}
.meta-row{margin-bottom:14px}
.badge,.metric{
  display:inline-flex;align-items:center;min-height:32px;
  padding:6px 12px;border-radius:999px;
  font-size:.86rem;font-weight:800;
}
.badge{
  background:#eef5ff;
  border:1px solid #d4e2f8;
  color:var(--blue-dark);
}
.price-row{
  display:flex;flex-wrap:wrap;align-items:end;gap:12px;
  margin:0 0 14px;
}
.price-main{
  font-size:clamp(2rem,4vw,3rem);
  line-height:1;
  font-weight:900;
  color:var(--blue-dark);
}
.price-old{
  color:#7b8da9;
  text-decoration:line-through;
  font-size:1.15rem;
  font-weight:700;
}
.metric{
  background:#f7faff;
  border:1px solid #dde9f8;
  color:var(--text);
}
.metric.discount{
  background:var(--orange-soft);
  border-color:#f4d39a;
  color:#a85c00;
}
.product-copy p{
  margin:16px 0 0;
  color:var(--muted);
}
.cta-row{margin-top:20px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:48px;padding:0 18px;border-radius:14px;
  font-weight:800;text-decoration:none;
  transition:transform .15s ease, box-shadow .15s ease, opacity .15s ease;
}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn-primary{
  color:#fff;
  background:linear-gradient(135deg,var(--blue),var(--blue-dark));
  box-shadow:0 12px 24px rgba(11,95,200,.22);
}
.btn-light{
  color:var(--blue-dark);
  background:#f6faff;
  border:1px solid #d2e2f7;
}
.section{padding:22px;margin-top:18px}
.section h2{
  margin:0 0 10px;
  font-size:1.35rem;
  line-height:1.15;
}
.section p{margin:0 0 12px;color:var(--muted)}
.related-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:16px;
}
.related-card{
  padding:16px;
  border-radius:20px;
}
.related-card h3{
  margin:10px 0 10px;
  font-size:1.02rem;
  line-height:1.28;
}
.related-card h3 a{color:var(--text)}
.related-price{
  font-size:1.25rem;
  font-weight:900;
  color:var(--blue-dark);
  margin:6px 0 12px;
}
.footer-note{
  margin:24px 0 8px;
  color:var(--muted);
  font-size:.92rem;
}
@media (max-width: 900px){
  .site-top-inner{min-height:72px}
  .product-layout{grid-template-columns:1fr}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width: 640px){
  .wrap{width:min(100% - 20px, 1120px)}
  main.wrap{padding:16px 0 28px}
  .product-card,.section{padding:16px}
  .site-top-inner{
    flex-direction:column;
    align-items:flex-start;
    gap:10px;
  }
  .site-logo{width:min(180px,55vw)}
  .site-top-nav{gap:10px;font-size:.95rem}
  .product-copy h1{font-size:clamp(1.55rem,8vw,2.05rem)}
  .price-main{font-size:clamp(1.8rem,9vw,2.4rem)}
  .related-grid{grid-template-columns:1fr}
}