/* Buttons, forms, catalog UI, tabs, search */
.btn-primary {
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius-pill);
  padding: 12px 26px;
  font-weight: 700;
  font-size: 14px;
  transition: background 0.2s;
}

.btn-primary:hover {
  background: var(--color-primary-hover);
}

.btn-outline {
  border: 1px solid var(--color-primary);
  color: var(--color-primary);
  border-radius: var(--radius-pill);
  padding: 12px 22px;
  font-weight: 700;
  background: transparent;
}

.btn-outline:hover {
  background: rgba(0, 140, 255, 0.06);
}

.btn-ghost {
  background: var(--color-soft);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  padding: 11px 22px;
  font-weight: 600;
  display: inline-flex;
  gap: 8px;
  align-items: center;
}

.btn-orange-link {
  color: var(--color-orange);
  font-weight: 700;
  font-size: 13px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.btn-orange-link-icon {
  width: 17px;
  height: 13px;
  object-fit: contain;
  flex-shrink: 0;
  display: block;
}

.form-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

@media (max-width: 768px) {
  .form-grid-2 {
    grid-template-columns: 1fr;
  }
}

.field label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--color-text);
}

.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 14px;
}

.field textarea {
  min-height: 140px;
  resize: vertical;
}

.check-inline {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 13px;
  color: var(--color-muted);
  margin-top: 12px;
}

.product-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 14px 12px;
  background: #fff;
  display: flex;
  flex-direction: column;
  gap: 10px;
  cursor: pointer;
}

.product-card:hover,
.product-card:focus-within {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-soft);
}

.pc-diagram {
  aspect-ratio: 1;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: #fafbfc;
  display: flex;
  align-items: center;
  justify-content: center;
}

.product-card h4 {
  margin: 0;
  padding: 0 12px;
  font-size: 15px;
  font-weight: 650;
  color: #333333;
}

.product-card:hover h4,
.product-card:focus-within h4 {
  color: var(--color-primary);
}

.product-card h4 + p.pc-meta {
  color: #333333;
}

.product-card .pc-meta {
  padding: 0 12px;
}

/* .product-card:hover h4 + p.pc-meta,
.product-card:focus-within h4 + p.pc-meta {
  color: var(--color-primary);
} */

.pc-meta {
  margin: 0;
  font-size: 12px;
  color: var(--color-muted);
  line-height: 1.5;
}

.products-grid .product-card,
.products-grid-4 .product-card {
  /* 1920 baseline: 384x354，then downscale by breakpoints */
  --pc-card-max-w: 384px;
  --pc-card-h: 346px;
  --pc-card-pad-y: 14px;
  --pc-card-pad-x: 12px;
  --pc-card-diagram-h: 160px;
  --pc-card-title-size: 20px;
  --pc-card-meta-size: 14px;
  --pc-card-meta-line: 23px;
  width: 100%;
  max-width: var(--pc-card-max-w);
  min-height: var(--pc-card-h);
  box-sizing: border-box;
  padding: var(--pc-card-pad-y) var(--pc-card-pad-x);
  gap: 0;
  align-items: stretch;
  overflow: hidden;
}

.products-grid .product-card .pc-diagram,
.products-grid-4 .product-card .pc-diagram {
  width: 100%;
  height: var(--pc-card-diagram-h);
  flex-shrink: 0;
  aspect-ratio: unset;
  box-sizing: border-box;
  overflow: hidden;
  border: none;
  background: transparent;
  border-radius: 0;
}

.products-grid .product-card .pc-diagram svg,
.products-grid .product-card .pc-diagram img,
.products-grid-4 .product-card .pc-diagram svg,
.products-grid-4 .product-card .pc-diagram img {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
  flex-shrink: 0;
}

.products-grid .product-card h4,
.products-grid-4 .product-card h4 {
  margin: 14px 0 0;
  padding: 0 12px;
  font-size: var(--pc-card-title-size);
  line-height: 1.25;
  color: #333333;
}

.products-grid .product-card:hover h4,
.products-grid .product-card:focus-within h4,
.products-grid-4 .product-card:hover h4,
.products-grid-4 .product-card:focus-within h4 {
  color: var(--color-primary);
}

.products-grid .product-card h4 + p.pc-meta,
.products-grid-4 .product-card h4 + p.pc-meta {
  margin: 22px 0 0;
  padding: 0 12px;
  font-size: var(--pc-card-meta-size);
  line-height: var(--pc-card-meta-line);
  color: #333333;
  flex: 1 1 auto;
  min-height: 0;
}

/* .products-grid .product-card:hover h4 + p.pc-meta,
.products-grid .product-card:focus-within h4 + p.pc-meta,
.products-grid-4 .product-card:hover h4 + p.pc-meta,
.products-grid-4 .product-card:focus-within h4 + p.pc-meta {
  color: var(--color-primary);
} */

.products-grid .product-card > .btn-orange-link,
.products-grid-4 .product-card > .btn-orange-link {
  width: auto;
  max-width: 100%;
  height: 32px;
  box-sizing: border-box;
  margin: 7px 0 0;
  align-self: flex-start;
  padding: 0 12px;
  display: inline-flex;
  align-items: center;
  justify-content: flex-start;
  gap: 6px;
  border-radius: 15px;
  font-size: 14px;
  font-weight: 700;
  color: #ff5a00;
  text-decoration: none;
  /* transition:
    background 0.2s ease,
    color 0.2s ease; */
}

.products-grid .product-card:hover > .btn-orange-link,
.products-grid .product-card:focus-within > .btn-orange-link,
.products-grid-4 .product-card:hover > .btn-orange-link,
.products-grid-4 .product-card:focus-within > .btn-orange-link {
  background: #fff4ee;
  color: #ff5a00;
  text-decoration: none;
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

.products-grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

@media (max-width: 1440px) {
  .products-grid,
  .products-grid-4 {
    grid-template-columns: repeat(3, 1fr);
  }

  .products-grid .product-card,
  .products-grid-4 .product-card {
    --pc-card-max-w: 336px;
    --pc-card-h: 314px;
    --pc-card-pad-y: 13px;
    --pc-card-pad-x: 11px;
    --pc-card-diagram-h: 146px;
    --pc-card-title-size: 18px;
    --pc-card-meta-size: 13px;
    --pc-card-meta-line: 21px;
  }
}

@media (max-width: 1366px) {
  .products-grid .product-card,
  .products-grid-4 .product-card {
    --pc-card-max-w: 318px;
    --pc-card-h: 300px;
    --pc-card-pad-y: 13px;
    --pc-card-pad-x: 11px;
    --pc-card-diagram-h: 138px;
    --pc-card-title-size: 17px;
    --pc-card-meta-size: 13px;
    --pc-card-meta-line: 20px;
  }
}

@media (max-width: 1280px) {
  .products-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .products-grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .products-grid .product-card,
  .products-grid-4 .product-card {
    --pc-card-max-w: none;
    --pc-card-h: 278px;
    --pc-card-pad-y: 12px;
    --pc-card-pad-x: 11px;
    --pc-card-diagram-h: 128px;
    --pc-card-title-size: 16px;
    --pc-card-meta-size: 13px;
    --pc-card-meta-line: 19px;
  }
}

@media (max-width: 768px) {
  .products-grid {
    grid-template-columns: 1fr;
  }

  .products-grid-4 {
    grid-template-columns: 1fr;
  }

  .products-grid .product-card,
  .products-grid-4 .product-card {
    --pc-card-h: 256px;
    --pc-card-pad-y: 11px;
    --pc-card-pad-x: 9px;
    --pc-card-diagram-h: 116px;
    --pc-card-title-size: 15px;
    --pc-card-meta-size: 12px;
    --pc-card-meta-line: 18px;
  }
}

@media (max-width: 480px) {
  .products-grid .product-card,
  .products-grid-4 .product-card {
    --pc-card-h: 230px;
    --pc-card-pad-y: 10px;
    --pc-card-pad-x: 9px;
    --pc-card-diagram-h: 104px;
    --pc-card-title-size: 14px;
    --pc-card-meta-size: 12px;
    --pc-card-meta-line: 17px;
  }
}

@media (max-width: 375px) {
  .products-grid .product-card,
  .products-grid-4 .product-card {
    --pc-card-h: 212px;
    --pc-card-pad-y: 8px;
    --pc-card-pad-x: 8px;
    --pc-card-diagram-h: 92px;
    --pc-card-title-size: 13px;
    --pc-card-meta-size: 11px;
    --pc-card-meta-line: 16px;
  }
}

.pagination {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin-top: 32px;
}

.pagination a,
.pagination span {
  min-width: 38px;
  height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 700;
  color: #333333;
}

.pagination .active {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.pagination .pagination-last {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-width: 66px;
  width: 66px;
  padding: 0;
  box-sizing: border-box;
}

.pagination .pagination-last img {
  display: block;
  width: auto;
  height: 9px;
  object-fit: contain;
}

.layout-with-sidebar {
  display: grid;
  grid-template-columns: 30% 1fr;
  gap: 28px;
  align-items: start;
}

.filter-block {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: #fff;
  margin-bottom: 12px;
  overflow: hidden;
}

.filter-head {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  font-weight: 800;
  font-size: 13px;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.filter-body {
  padding: 12px 16px 14px;
}

.filter-option {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  margin-bottom: 10px;
  color: var(--color-muted);
}

.filter-option:last-child {
  margin-bottom: 0;
}

.sheet-tabs [role="tab"] {
  box-sizing: border-box;
  flex: 1 1 0;
  min-width: 0;
  width: auto;
  max-width: none;
  padding: 16px 8px 12px;
  margin-bottom: -1px;
  margin-right: 0;
  font-weight: 800;
  font-size: 18px;
  text-align: center;
  color: var(--color-muted);
  border-bottom: 2px solid transparent;
}

.sheet-tabs [role="tab"].active,
.sheet-tabs [role="tab"][aria-selected="true"] {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.sheet-tabs {
  display: flex;
  flex-wrap: nowrap;
  justify-content: center;
  align-items: flex-end;
  gap: 0 40px;
  box-sizing: border-box;
  width: 100%;
  max-width: 1280px;
  margin-inline: auto;
  height: 113px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 20px;
}

.sheet-panel-inner {
  background: var(--color-soft);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px;
}

.spec-dl-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
}

.spec-dl-grid div {
  padding: 10px 14px;
  border-bottom: 1px solid var(--color-border);
  font-size: 13px;
}

.big-search {
  width: 100%;
  max-width: 840px;
  margin: 0 auto;
  display: flex;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  overflow: hidden;
  background: #fff;
  box-shadow: var(--shadow-soft);
}

.big-search input {
  flex: 1;
  border: none;
  padding: 16px 22px;
  font-size: 16px;
}

.big-search input:focus,
.big-search input:focus-visible {
  outline: none;
  box-shadow: none;
}

.big-search button {
  padding: 0 18px;
  color: var(--color-primary);
}

.hot-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-top: 16px;
}

.hot-tags a {
  border: 1px solid var(--color-primary);
  color: var(--color-primary);
  border-radius: var(--radius-pill);
  padding: 6px 14px;
  font-size: 12px;
  font-weight: 700;
}

.doc-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.doc-card-pdf {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 16px;
  display: grid;
  grid-template-columns: 48px 1fr auto;
  gap: 12px;
  align-items: center;
  background: #fff;
}

.site-hub {
  max-width: 900px;
  margin: 0 auto;
  padding: 64px 24px 96px;
}

.hub-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 24px;
}

@media (max-width: 1280px) {
  .hub-cards {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 768px) {
  .hub-cards {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .hub-cards {
    grid-template-columns: 1fr;
  }
}

.hub-cards a {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 18px;
  font-weight: 700;
}

.hub-cards a:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.learn-more {
  padding: 10px 10px 10px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 192px;
  height: 55px;
  border-radius: var(--radius-pill);
  box-sizing: border-box;
  background: #ebf0f5;
  color: #777;
  border: 1px solid transparent;
}

/* learn-more-icon-wrap 内需保持空节点，箭头仅靠背景图切换 */

.learn-more .learn-more-icon-wrap {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 35px;
  height: 35px;
  border-radius: var(--radius-pill);
  flex-shrink: 0;
  background-color: #fff;
  border: 1px solid transparent;
  box-sizing: border-box;

  background-image: url("../img/index/more.png");
  background-repeat: no-repeat;
  background-position: center;
  background-size: 16px 16px;
}

.learn-more.learn-more--primary .learn-more-icon-wrap {
  background-color: transparent;
  border-color: transparent;
  background-image: none;
}

.learn-more:hover .learn-more-icon-wrap,
.learn-more:focus-visible .learn-more-icon-wrap {
  background-color: #fff;
  border: 1px solid transparent;
  background-image: url("../img/index/more-primary.png");
}

.learn-more:hover,
.learn-more:focus-visible {
  background: var(--color-primary);
  color: #fff;
  border: 1px solid #fff;
}
/* 悬停整张卡时按钮与箭头与 .learn-more:hover 一致（含 learn-more--who 自身不写 :hover） */
.learn-more-box:hover .learn-more,
.learn-more-box:focus-within .learn-more,
.learn-more-box.is-active .learn-more {
  background: var(--color-primary);
  color: #fff;
  border: 1px solid #fff;
}

.learn-more-box:hover .learn-more .learn-more-icon-wrap,
.learn-more-box:focus-within .learn-more .learn-more-icon-wrap,
.learn-more-box.is-active .learn-more .learn-more-icon-wrap {
  background-color: #fff;
  border: 1px solid transparent;
  background-image: url("../img/index/more-primary.png");
}

.learn-more-box:hover .learn-more:hover,
.learn-more-box:focus-within .learn-more:hover,
.learn-more-box.is-active .learn-more:hover {
  background-color: var(--color-primary-hover);
}

.learn-more {
  padding: 10px 10px 10px 36px;
  width: 182px;
  height: 53px;
}

@media (max-width: 1024px) {
  .learn-more .learn-more-icon-wrap {
    width: 33px;
    height: 33px;
  }

  .sheet-tabs {
    height: 96px;
    gap: 0 28px;
  }

  .sheet-tabs [role="tab"] {
    font-size: 17px;
    padding: 14px 0 10px;
  }
}

@media (max-width: 768px) {
  .learn-more {
    padding: 9px 9px 9px 32px;
    width: 170px;
    height: 50px;
  }

  .learn-more .learn-more-icon-wrap {
    width: 31px;
    height: 31px;
    background-size: 15px 15px;
  }

  .sheet-tabs {
    height: auto;
    min-height: 72px;
    justify-content: center;
    gap: 0 20px;
    padding-top: 8px;
  }

  .sheet-tabs [role="tab"] {
    font-size: 16px;
    padding: 12px 0 10px;
  }
}

@media (max-width: 480px) {
  .learn-more {
    padding: 8px 8px 8px 24px;
    width: 148px;
    height: 44px;
  }

  .learn-more .learn-more-icon-wrap {
    width: 28px;
    height: 28px;
    background-size: 14px 14px;
  }

  .sheet-tabs {
    gap: 0 14px;
    min-height: 64px;
  }

  .sheet-tabs [role="tab"] {
    font-size: 14px;
    padding: 10px 0 8px;
  }
}

@media (max-width: 375px) {
  .sheet-tabs {
    gap: 0 12px;
  }

  .sheet-tabs [role="tab"] {
    font-size: 13px;
  }
}