.product-section-nav button {
  appearance: none;
  border: 0;
  border-bottom: 3px solid transparent;
  background: transparent;
  padding: 17px 3px 14px;
  color: #526077;
  font: 700 12px Inter, sans-serif;
  cursor: pointer;
  white-space: nowrap;
}

.product-section-nav button:hover,
.product-section-nav button[aria-selected="true"] {
  color: #1769ff;
  border-bottom-color: #1769ff;
}

.product-section-nav button:focus-visible {
  outline: 2px solid #1769ff;
  outline-offset: 3px;
  border-radius: 3px;
}

.product-tab-window {
  min-height: 330px;
  padding: 38px 34px;
  border: 1px solid #dfe5ed;
  border-top: 0;
  border-radius: 0 0 12px 12px;
  background: #fff;
}

.product-tab-window > [hidden] { display: none !important; }
.product-tab-window > .product-details { padding-top: 0; }

.product-overview-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, .65fr);
  gap: 70px;
  align-items: start;
}

.product-overview-panel h2 {
  margin: 0 0 14px;
  font-size: 32px;
  letter-spacing: -.035em;
}

.product-overview-panel > div > p:last-child {
  color: #657085;
  font-size: 13px;
  line-height: 1.75;
}

.overview-assurance {
  display: grid;
  grid-template-columns: 36px 1fr;
  gap: 13px;
  padding: 22px;
  border-radius: 10px;
  background: #f3f7ff;
}

.overview-assurance > i {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: #1769ff;
  color: #fff;
}

.overview-assurance strong { font-size: 12px; }
.overview-assurance p { margin: 7px 0 0; color: #657085; font-size: 10px; line-height: 1.6; }
.product-tab-window > .retail-shipping { margin: 0; border: 0; padding: 20px; background: #f8fafc; }

@media (max-width: 760px) {
  .product-section-nav button { padding-top: 15px; }
  .product-tab-window { min-height: 300px; padding: 26px 18px; }
  .product-overview-panel { grid-template-columns: 1fr; gap: 24px; }
  .product-tab-window > .product-details { padding-top: 0; }
  .product-tab-window > .retail-shipping { padding: 18px; }
}