:root {
  --amazon-blue: #131921;
  --amazon-sub: #232f3e;
  --amazon-orange: #ffa41c;
  --amazon-yellow: #ffd814;
  --amazon-link: #007185;
  --price: #b12704;
  --ink: #0f1111;
  --muted: #565959;
  --line: #d5d9d9;
  --panel: #fff;
  --page: #fff;
  --soft: #f7fafa;
  --max: 1480px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--ink);
  background: var(--page);
  line-height: 1.42;
}

a { color: var(--amazon-link); text-decoration: none; }
a:hover { color: #c7511f; text-decoration: underline; }
img { display: block; max-width: 100%; }

.top-nav {
  background: var(--amazon-blue);
  color: #fff;
}

.nav-inner {
  width: min(var(--max), calc(100vw - 28px));
  margin: 0 auto;
  min-height: 58px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.brand {
  color: #fff;
  font-size: 28px;
  font-weight: 800;
  letter-spacing: .2px;
  text-decoration: none;
}

.brand span { color: var(--amazon-orange); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 18px;
  font-size: 14px;
  font-weight: 700;
}

.nav-links a { color: #fff; }

.sub-nav {
  background: var(--amazon-sub);
  color: #fff;
  font-size: 14px;
}

.sub-nav .nav-inner {
  min-height: 36px;
  justify-content: flex-start;
}

.wrap {
  width: min(var(--max), calc(100vw - 28px));
  margin: 0 auto;
}

.breadcrumb {
  color: var(--muted);
  font-size: 13px;
  margin: 14px 0;
}

.catalog-hero {
  background: linear-gradient(180deg, #eef3f3, #fff);
  border-bottom: 1px solid var(--line);
  padding: 30px 0;
}

.catalog-hero h1 {
  margin: 0;
  font-size: clamp(32px, 4vw, 52px);
  line-height: 1.05;
}

.catalog-hero p {
  max-width: 820px;
  color: var(--muted);
  font-size: 18px;
}

.catalog-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  padding: 28px 0 44px;
}

.catalog-card {
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  gap: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px;
  color: var(--ink);
  background: #fff;
  text-decoration: none;
}

.catalog-card-large {
  grid-template-columns: minmax(280px, 42%) minmax(0, 1fr);
  min-height: 420px;
  padding: 22px;
  gap: 24px;
}

.catalog-card:hover {
  text-decoration: none;
  box-shadow: 0 4px 18px rgba(15, 17, 17, .12);
}

.catalog-card img {
  width: 100%;
  aspect-ratio: 1 / 1.08;
  object-fit: contain;
}

.catalog-card h2 {
  margin: 0 0 8px;
  font-size: 24px;
  line-height: 1.2;
  color: var(--ink);
}

.catalog-card p {
  color: #334155;
  font-size: 16px;
}

.catalog-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin: 14px 0;
}

.catalog-fact {
  border: 1px solid #e7e7e7;
  border-radius: 6px;
  background: #fafafa;
  padding: 9px 10px;
  font-size: 14px;
}

.catalog-fact strong {
  display: block;
  margin-bottom: 2px;
  color: var(--ink);
}

.deal-line {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  background: #fff4d6;
  color: #7a3d00;
  font-size: 14px;
  font-weight: 700;
  padding: 7px 10px;
  margin-top: 6px;
}

.asin-line {
  color: var(--muted);
  font-size: 14px;
  margin-bottom: 8px;
}

.price {
  color: var(--price);
  font-size: 28px;
  line-height: 1;
  margin: 12px 0;
}

.price sup {
  font-size: 14px;
  top: -.4em;
  position: relative;
}

.pdp-layout {
  display: grid;
  grid-template-columns: minmax(360px, 43%) minmax(360px, 1fr) 260px;
  gap: 24px;
  align-items: start;
  padding-bottom: 28px;
}

.gallery {
  position: sticky;
  top: 78px;
  display: grid;
  grid-template-columns: 70px minmax(0, 1fr);
  gap: 12px;
}

.thumbs {
  display: grid;
  gap: 8px;
  align-content: start;
}

.thumb {
  width: 64px;
  height: 64px;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 3px;
  background: #fff;
}

.main-image {
  border: 1px solid #eee;
  display: grid;
  place-items: center;
  min-height: 540px;
  padding: 18px;
}

.main-image img {
  max-height: 640px;
  object-fit: contain;
}

.product-title {
  margin: 0;
  font-size: 24px;
  font-weight: 500;
  line-height: 1.28;
}

.brand-line {
  margin-top: 8px;
  font-size: 14px;
}

.rating-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin: 10px 0 12px;
  font-size: 14px;
}

.stars { color: #f59b00; letter-spacing: 1px; font-weight: 700; }

.divider {
  border: 0;
  border-top: 1px solid var(--line);
  margin: 14px 0;
}

.attribute-grid {
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr);
  gap: 8px 12px;
  margin: 14px 0;
  font-size: 15px;
}

.attribute-grid dt {
  font-weight: 700;
}

.attribute-grid dd {
  margin: 0;
  color: #222;
}

.feature-list {
  margin: 0;
  padding-left: 20px;
}

.feature-list li {
  margin: 8px 0;
}

.buy-box {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
  background: #fff;
  position: sticky;
  top: 78px;
}

.stock {
  color: #007600;
  font-size: 18px;
  margin: 10px 0;
}

.buy-button,
.cart-button {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 42px;
  border-radius: 999px;
  color: #111;
  font-size: 15px;
  border: 0;
  text-decoration: none;
  margin-top: 10px;
}

.cart-button { background: var(--amazon-yellow); }
.buy-button { background: var(--amazon-orange); }
.buy-button:hover,
.cart-button:hover { color: #111; text-decoration: none; filter: brightness(.97); }

.secure {
  margin-top: 12px;
  color: var(--muted);
  font-size: 13px;
}

.section {
  border-top: 1px solid var(--line);
  padding: 24px 0;
}

.section h2 {
  margin: 0 0 16px;
  font-size: 24px;
}

.aplus {
  display: grid;
  gap: 14px;
  max-width: 1464px;
  margin: 0 auto;
}

.aplus img {
  width: 100%;
  border: 1px solid #eee;
}

.info-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.spec-table th,
.spec-table td {
  border-top: 1px solid #e7e7e7;
  padding: 10px 12px;
  text-align: left;
  vertical-align: top;
}

.spec-table th {
  width: 42%;
  background: #f7f7f7;
  font-weight: 700;
}

.qa-list {
  display: grid;
  gap: 14px;
}

.qa-item {
  border-bottom: 1px solid #e7e7e7;
  padding-bottom: 14px;
}

.qa-item strong {
  display: block;
  margin-bottom: 6px;
}

.box-list {
  margin: 0;
  padding-left: 20px;
}

.record-note {
  background: var(--soft);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px;
  color: #334155;
}

footer {
  border-top: 1px solid var(--line);
  background: #f7fafa;
  padding: 18px 0;
  color: #3f4d5a;
  font-size: 14px;
  text-align: center;
}

footer a { text-decoration: underline; text-underline-offset: 2px; }

@media (max-width: 1120px) {
  .pdp-layout {
    grid-template-columns: minmax(320px, 1fr) minmax(320px, 1fr);
  }

  .buy-box {
    grid-column: 2;
    position: static;
  }

  .gallery { position: static; }
}

@media (max-width: 760px) {
  .nav-inner { flex-direction: column; align-items: flex-start; padding: 12px 0; }
  .nav-links { overflow-x: auto; max-width: 100%; }
  .catalog-grid,
  .catalog-card,
  .catalog-card-large,
  .pdp-layout,
  .info-grid {
    grid-template-columns: 1fr;
  }

  .buy-box { grid-column: auto; }
  .gallery { grid-template-columns: 1fr; }
  .thumbs {
    grid-template-columns: repeat(5, 64px);
    overflow-x: auto;
  }
  .main-image { min-height: 340px; }
}