.product-shell {
  max-width: 1180px;
  margin: auto;
  padding: 66px 6vw;
}
.back-link {
  font-size: 14px;
  font-weight: 700;
  color: var(--teal);
  text-decoration: none;
}
.product-hero2 {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, .9fr);
  gap: 56px;
  align-items: center;
  padding: 46px 0 56px;
  border-bottom: 1px solid var(--line);
}
.product-hero2 h1 {
  font-size: clamp(40px, 5vw, 64px);
  line-height: 1.02;
  letter-spacing: -.045em;
  margin: 10px 0 18px;
}
.product-hero2 .lead {
  font-size: 19px;
  color: #485860;
  max-width: 620px;
}
.product-image {
  width: 100%;
  background: #f0f2ee;
  border: 1px solid var(--line);
  border-radius: 12px;
  display: block;
}
.product-meta {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  margin-top: 26px;
}
.product-meta div {
  font-size: 14px;
  color: #4b5b63;
}
.product-meta b {
  display: block;
  font-size: 11px;
  color: var(--teal);
  letter-spacing: .12em;
  margin-bottom: 3px;
}
.detail-section {
  padding: 56px 0;
  border-bottom: 1px solid var(--line);
}
.detail-section h2 {
  font-size: clamp(28px, 3.5vw, 42px);
  margin: 8px 0 18px;
  letter-spacing: -.03em;
}
.application-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.application-grid article {
  background: var(--mist);
  border-radius: 10px;
  padding: 22px;
}
.application-grid h3 {
  margin: 0 0 6px;
}
.application-grid p {
  margin: 0;
  color: #495961;
}
.specs {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0 36px;
}
.specs div {
  display: grid;
  grid-template-columns: 150px 1fr;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  font-size: 15px;
}
.specs dt {
  color: #52616a;
  font-weight: 700;
}
.specs dd {
  margin: 0;
}
.help-panel {
  background: var(--ink);
  color: #fff;
  padding: 34px;
  border-radius: 14px;
}
.help-panel p {
  color: #d5e1e0;
  max-width: 700px;
}
.help-panel .button {
  background: #fff;
  color: var(--ink);
}
@media(max-width:760px) {
  .product-shell {
    padding: 40px 5vw;
  }
  .product-hero2,.application-grid,.specs {
    grid-template-columns: 1fr;
  }
  .product-hero2 {
    gap: 30px;
  }
  .specs div {
    grid-template-columns: 130px 1fr;
  }
}