:root {
  --nine9-orange: #f05a1a;
  --page-bg: #f3f6fa;
  --card-bg: #ffffff;
  --head-gray: #cfcfcf;
  --head-light: #f5f5f5;
  --text-main: #050505;
  --text-muted: #1f2937;
  --border-soft: rgba(0, 0, 0, 0.08);
  --shadow-soft: 0 12px 28px rgba(15, 23, 42, 0.08);
}

/* ===============================
   頁面基本設定
   =============================== */
body {
  margin: 0;
  background: var(--page-bg);
  font-family: Arial, "Microsoft JhengHei", "Noto Sans TC", sans-serif;
  color: var(--text-main);
}

.products-page {
  padding: 18px 16px;
}

.products-container {
  max-width: 1180px;
  margin: 0 auto;
}

/* ===============================
   產品目錄亮色標題區
   用意：降低灰黑面積，並在手機首屏快速呈現頁面層級。
   =============================== */
.catalog-intro {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 22px;
  padding: 24px;
  background: linear-gradient(125deg, #ffffff 0%, #eef7ff 100%);
  border: 1px solid #cfdfec;
  border-radius: 18px;
  box-shadow: 0 7px 22px rgba(27, 64, 94, 0.09);
}

.catalog-eyebrow {
  margin: 0 0 6px;
  color: var(--nine9-orange);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.13em;
}

.catalog-intro h1 {
  margin: 0;
  color: #102a43;
  font-size: clamp(36px, 5vw, 52px);
  font-weight: 900;
  line-height: 1;
}

.family-count {
  flex: 0 0 auto;
  padding: 8px 12px;
  color: #07508f;
  background: #dceeff;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 800;
}

.products-title {
  font-size: clamp(36px, 4vw, 48px);
  font-weight: 900;
  line-height: 1;
  margin: 8px 0 28px;
}

.home-page {
  padding: 28px 16px 70px;
}

.home-hero,
.home-tool-grid,
.home-product-strip {
  max-width: 1180px;
  margin: 0 auto;
}

.home-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(320px, 0.85fr);
  gap: 28px;
  align-items: stretch;
  min-height: 320px;
  padding: 38px;
  color: #fff;
  background: #111;
  border-radius: 8px;
}

.home-kicker {
  display: inline-block;
  margin-bottom: 14px;
  color: #ff9a68;
  font-size: 15px;
  font-weight: 900;
  text-transform: uppercase;
}

.home-hero h1 {
  max-width: 680px;
  margin: 0 0 18px;
  font-size: clamp(38px, 5vw, 64px);
  font-weight: 900;
  line-height: 0.98;
}

.home-hero p {
  max-width: 620px;
  margin: 0;
  color: #e7e7e7;
  font-size: 20px;
  font-weight: 700;
  line-height: 1.55;
}

.home-hero-panel {
  display: grid;
  gap: 14px;
  align-content: end;
}

.home-feature,
.home-tool-card,
.home-method-row a {
  text-decoration: none;
}

.home-feature {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  grid-template-areas:
    "icon label"
    "icon text";
  gap: 4px 14px;
  align-items: center;
  padding: 18px;
  color: #111;
  background: #fff;
  border-radius: 8px;
}

.home-feature:hover {
  color: #111;
}

.home-feature.is-primary {
  color: #fff;
  background: var(--nine9-orange);
}

.home-feature i {
  grid-area: icon;
  width: 48px;
  height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  background: #111;
  border-radius: 8px;
  font-size: 20px;
}

.home-feature span {
  grid-area: label;
  font-size: 15px;
  font-weight: 900;
}

.home-feature strong {
  grid-area: text;
  font-size: 20px;
  font-weight: 900;
  line-height: 1.2;
}

.home-tool-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 28px;
}

.home-tool-card {
  min-height: 210px;
  display: grid;
  grid-template-rows: auto auto 1fr;
  gap: 12px;
  padding: 24px;
  color: var(--text-main);
  background: #fff;
  border: 1px solid var(--border-soft);
  border-radius: 8px;
  box-shadow: 0 4px 16px rgba(15, 23, 42, 0.04);
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.home-tool-card:hover {
  color: var(--text-main);
  border-color: rgba(240, 90, 26, 0.44);
  box-shadow: var(--shadow-soft);
  transform: translateY(-3px);
}

.home-tool-card i {
  width: 44px;
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  background: var(--nine9-orange);
  border-radius: 8px;
  font-size: 18px;
}

.home-tool-card h2 {
  margin: 0;
  font-size: 24px;
  font-weight: 900;
  line-height: 1.15;
}

.home-tool-card p {
  margin: 0;
  color: var(--text-muted);
  font-size: 16px;
  font-weight: 700;
  line-height: 1.55;
}

.home-product-strip {
  margin-top: 34px;
  padding: 26px;
  background: #fff;
  border: 1px solid var(--border-soft);
  border-radius: 8px;
}

.home-section-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 18px;
}

.home-section-heading h2 {
  margin: 0;
  font-size: 28px;
  font-weight: 900;
}

.home-section-heading a {
  color: var(--nine9-orange);
  font-size: 16px;
  font-weight: 900;
  text-decoration: none;
}

.home-method-row {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.home-method-row a {
  min-height: 116px;
  display: grid;
  grid-template-columns: 74px minmax(0, 1fr);
  align-items: center;
  gap: 14px;
  padding: 16px;
  color: #111;
  background: #f5f6f8;
  border: 1px solid #e1e5eb;
  border-radius: 8px;
}

.home-method-row a:hover {
  color: var(--nine9-orange);
  border-color: rgba(240, 90, 26, 0.44);
}

.home-method-row img {
  width: 64px;
  height: 64px;
  object-fit: contain;
}

.home-method-row span {
  font-size: 18px;
  font-weight: 900;
  line-height: 1.15;
}

/* ===============================
   Card 外層
   =============================== */
.product-family-card {
  height: 100%;
  min-height: 390px;
  background: var(--card-bg);
  border: 1px solid var(--border-soft);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 4px 16px rgba(15, 23, 42, 0.04);
  transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
}

.product-family-card:hover {
  transform: translateY(-4px);
  border-color: rgba(240, 90, 26, 0.42);
  box-shadow: var(--shadow-soft);
}

/* ===============================
   Card 上方：圖片 + 標題
   改成 flex，避免 iPhone Safari 跑版
   =============================== */
.product-family-head {
  width: 100%;
  height: 108px;
  display: flex;
  align-items: stretch;
  border: 0;
  padding: 0;
  background: var(--head-gray);
  color: var(--text-main);
  text-decoration: none;
  cursor: pointer;
  text-align: left;
}

/* 左側圖片區 */
.product-family-icon {
  width: 120px;
  flex: 0 0 120px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--head-light);
  border-right: 1px solid rgba(255, 255, 255, 0.9);
}

/* =========================================================
   Product Family Link
========================================================= */

.product-family-toggle {

  display: block;

  width: 100%;

  padding: 0;

  border: 0;

  background: transparent;

  color: inherit;

  font: inherit;

  text-align: left;

  cursor: pointer;

}

.product-family-toggle:hover,
.product-family-toggle:focus,
.product-family-toggle:active {

  text-decoration: none;

  color: inherit;

  outline: none;

}

.product-family-toggle h2,
.product-family-toggle span,
.product-family-toggle div {

  color: inherit;

  text-decoration: none;

}

/* 圖片本體 */
.product-family-img {
  width: 72px;
  height: 72px;
  object-fit: contain;
  display: block;
}

/* 右側標題區
.product-family-name-wrap {
  flex: 1;
  min-width: 0;
  display: flex;
  align-items: center;
  padding: 0 18px;
  background: var(--head-gray);
  overflow: hidden;
} */

/* =========================================================
   Product Family Name Wrap
   用意：
   1. 文字上下置中
   2. 長文字可換行
========================================================= */

.product-family-name-wrap {

  flex: 1;

  min-width: 0;

  display: flex;

  align-items: center;

  justify-content: flex-start;

  padding: 0 18px;

  background: var(--head-gray);

  overflow: visible;

}

/* 桌面版直接顯示完整卡片，不需要展開提示。 */
.family-chevron {
  display: none;
}

/* 標題文字
.product-family-name {
  font-size: clamp(22px, 1.8vw, 28px);
  font-weight: 900;
  line-height: 1.08;
  margin: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
} */

/* =========================================================
   Product Family Name
   用意：
   1. 產品名稱自動換行
   2. 長文字不截斷
   3. 上下置中
   4. 與 Nine9 Tech Center 版型一致
========================================================= */

.product-family-name {

  /* 字體大小 */
  font-size: clamp(22px, 1.8vw, 28px);

  /* 粗體 */
  font-weight: 900;

  /* 行高 */
  line-height: 1.05;

  /* 清掉 h2 預設外距 */
  margin: 0;

  /* =======================================================
     關鍵：
     不要單行
  ======================================================== */
  white-space: normal;

  /* =======================================================
     長單字允許換行
     例如：
     Deburring&Chamfering
  ======================================================== */
  overflow-wrap: anywhere;

  word-break: break-word;

  /* =======================================================
     不要省略號
  ======================================================== */
  overflow: visible;

  text-overflow: unset;

  /* =====================================================
     防止超連結藍線
  ====================================================== */

  color: inherit !important;

  text-decoration: none !important;


}

/* ===============================
   Card 下方：Related Products
   =============================== */
.product-family-body {
  display: block;
  padding: 18px 18px 24px;
}

.related-title {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--nine9-orange);
  font-size: 22px;
  line-height: 1.2;
  margin-bottom: 14px;
}

.related-title::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 22px;
  background: var(--nine9-orange);
}

.related-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.related-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 19px;
  line-height: 1.35;
  margin-bottom: 14px;
}

.related-list li::before {
  content: "›";
  flex: 0 0 auto;
  color: var(--text-main);
  font-size: 26px;
  line-height: 0.9;
}

.related-list a {
  color: var(--text-muted);
  text-decoration: none;
}

.related-list a:hover {
  color: var(--nine9-orange);
}

.product-family-cta {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  margin-top: 4px;
  color: var(--nine9-orange);
  font-size: 16px;
  font-weight: 700;
  text-decoration: none;
}

.product-family-cta:hover {
  color: #c44712;
}

/* ===============================
   平板版
   =============================== */
@media (max-width: 991.98px) {
  .home-hero,
  .home-tool-grid,
  .home-method-row {
    grid-template-columns: 1fr 1fr;
  }

  .product-family-card {
    min-height: 360px;
  }

  .product-family-head {
    height: 100px;
  }

  .product-family-icon {
    width: 110px;
    flex: 0 0 110px;
  }

  .product-family-img {
    width: 66px;
    height: 66px;
  }

  .product-family-name {
    font-size: 24px;
  }

 

}

/* ===============================
   手機版
   iPhone / Android 最佳化
   =============================== */

@media (max-width: 575.98px) {
  .home-page {
    padding: 12px 10px 28px;
  }

  .home-hero {
    grid-template-columns: 1fr;
    min-height: 0;
    padding: 24px 18px;
  }

  .home-hero h1 {
    font-size: 36px;
  }

  .home-hero p {
    font-size: 17px;
  }

  .home-tool-grid,
  .home-method-row {
    grid-template-columns: 1fr;
    gap: 10px;
    margin-top: 12px;
  }

  .home-tool-card {
    min-height: 0;
    padding: 18px;
  }

  .home-product-strip {
    margin-top: 14px;
    padding: 16px;
  }

  .home-section-heading {
    display: grid;
    gap: 6px;
  }

  .home-section-heading h2 {
    font-size: 22px;
  }

  /* =======================================================
     頁面上下左右留白
     原本太大：
     14px 12px 24px
  ======================================================== */

  .products-page {

    padding: 16px 12px 36px;

  }

  /* 亮色標題區在手機上維持緊湊，避免把產品卡片推到首屏之外。 */
  .catalog-intro {
    align-items: flex-start;
    margin-bottom: 20px;
    padding: 17px;
    border-radius: 15px;
  }

  .catalog-eyebrow {
    max-width: 145px;
    margin-bottom: 7px;
    font-size: 12px;
    line-height: 1.35;
  }

  .catalog-intro h1 {
    font-size: 38px;
  }

  .family-count {
    margin-top: 1px;
    padding: 8px 10px;
    font-size: 12px;
  }

  /* =======================================================
     Products 標題
  ======================================================== */

  .products-title {

    font-size: 30px;

    line-height: 1.05;

    margin: 2px 0 14px;

  }

  /* =======================================================
     Grid 間距
     原本 16px 太鬆
  ======================================================== */

  #productsGrid {

    margin-left: 0;

    margin-right: 0;

    row-gap: 10px;

  }

  /* =======================================================
     Bootstrap 欄位
  ======================================================== */

  #productsGrid>[class*="col-"] {

    padding-left: 0;

    padding-right: 0;

  }

  /* =======================================================
     Card
  ======================================================== */

  .product-family-card {

    position: relative;

    width: 100%;

    min-height: 0;

    height: auto;

    border: 1px solid #d7e3ed;

    border-radius: 14px;

    overflow: hidden;

    background: #ffffff;

    box-shadow: 0 5px 16px rgba(27, 64, 94, 0.075);

  }

  /* 左側橘色識別線保留 Nine9 品牌感，但不壓暗卡片。 */
  .product-family-card::before {
    content: "";
    position: absolute;
    inset: 0 auto 0 0;
    z-index: 1;
    width: 4px;
    background: var(--nine9-orange);
  }

  /* =======================================================
     上方區塊高度
     原本 88px
  ======================================================== */

  .product-family-head {

    width: 100%;

    height: 84px;

    min-height: 84px;

    display: grid;

    grid-template-columns: 66px minmax(0, 1fr) 30px;

    align-items: center;

    gap: 12px;

    padding: 9px 12px 9px 14px;

    background: #ffffff;

    border: 0;

  }

  
  /* =======================================================
     左側圖片區
  ======================================================== */

  .product-family-icon {

    width: 60px;

    height: 60px;

    padding: 7px;

    background: #edf6ff;

    border: 1px solid #d6e7f5;

    border-radius: 12px;

    display: flex;

    align-items: center;

    justify-content: center;

  }

  /* =======================================================
     圖片大小
  ======================================================== */

  .product-family-img {

    width: 46px;

    height: 46px;

    object-fit: contain;

    display: block;

  }

  /* =======================================================
     右側文字區
  ======================================================== */

  .product-family-name-wrap {

    height: auto;

    padding: 0;

    display: flex;

    align-items: center;

    justify-content: flex-start;

    background: transparent;

    overflow: visible;

  }

  /* =======================================================
     分類名稱
  ======================================================== */

  .product-family-name {

    color: #102a43 !important;

    font-size: 17px;

    font-weight: 900;

    line-height: 1.02;

    letter-spacing: 0;

    margin: 0;

    white-space: normal;

    overflow-wrap: anywhere;

    word-break: break-word;

  }

  /* 圓形 Bootstrap 向下箭頭提示卡片可以展開；展開後轉為向上並反白。 */
  .family-chevron {
    width: 30px;
    height: 30px;
    display: grid;
    place-items: center;
    color: var(--nine9-orange);
    background: #fff0e9;
    border-radius: 50%;
    transition: transform 0.18s ease, color 0.18s ease, background 0.18s ease;
  }

  /* 固定 SVG 尺寸，避免圖示受文字字級影響。 */
  .family-chevron svg {
    display: block;
    width: 16px;
    height: 16px;
  }

  .product-family-card.is-open .family-chevron {
    color: #ffffff;
    background: var(--nine9-orange);
    transform: rotate(180deg);
  }

  /* =======================================================
     手機版 Related Products
  ======================================================== */

  .product-family-body {

    display: none;

    padding: 12px 14px 14px;

    background: #ffffff;

    border-top: 1px solid #e6edf3;

  }

  /* 點擊展開 */

  .product-family-card.is-open .product-family-body {

    display: block;

  }

  /* =======================================================
     Related Products 標題
  ======================================================== */

  .related-title {

    font-size: 16px;

    margin-bottom: 10px;

  }

  .related-title::before {

    width: 5px;

    height: 16px;

  }

  /* =======================================================
     Related Products 清單
  ======================================================== */

  .related-list li {

    font-size: 15px;

    line-height: 1.3;

    margin-bottom: 8px;

  }

  .related-list li::before {

    font-size: 20px;

  }

  /* =======================================================
     手機版不要 Hover 位移
  ======================================================== */

  .product-family-card:hover {

    transform: none;

  }

  /* =========================================================
   手機版：
   覆蓋 Bootstrap g-4 間距
   用意：
   讓手機版卡片更緊湊
========================================================= */

  #productsGrid {

    --bs-gutter-x: 0;

    --bs-gutter-y: 6px;

  }

}

/* ===============================
   調整方式說明
   =============================== */

/*
1. 調整 Card 高度：
   .product-family-card {
     min-height: 390px;
   }

2. 調整 Card 圓角：
   .product-family-card {
     border-radius: 16px;
   }

3. 調整上方圖片與標題區高度：
   .product-family-head {
     height: 108px;
   }

4. 調整左邊圖片區寬度：
   .product-family-icon {
     width: 120px;
     flex: 0 0 120px;
   }

5. 調整圖片大小：
   .product-family-img {
     width: 72px;
     height: 72px;
   }

6. 調整分類標題大小：
   .product-family-name {
     font-size: clamp(22px, 1.8vw, 28px);
   }

7. 手機版卡片高度：
   @media (max-width: 575.98px) {
     .product-family-head {
       height: 84px;
     }
   }

8. 手機版圖片大小：
   @media (max-width: 575.98px) {
     .product-family-img {
       width: 52px;
       height: 52px;
     }
   }

9. 手機版文字大小：
   @media (max-width: 575.98px) {
     .product-family-name {
       font-size: 20px;
     }
   }

10. 手機版 Related Products 預設收合：
    .product-family-body {
      display: none;
    }

11. 手機版點擊後展開：
    .product-family-card.is-open .product-family-body {
      display: block;
    }

12. 如果手機版還是覺得太大：
    把以下數值再縮小：
    .product-family-head height: 80px;
    .product-family-icon width: 86px;
    .product-family-img width/height: 48px;
    .product-family-name font-size: 18px;
*/

/* =========================================================
   Products 正式融合版
   用意：桌面使用白底技術型卡片，手機使用單開式手風琴。
   本段放在舊版規則後方，作為目前正式採用的最終樣式。
========================================================= */
.product-family-card {
  position: relative;
  min-height: 0;
  height: 100%;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: #fff;
  border: 1px solid #d5e2ed;
  border-radius: 16px;
  box-shadow: 0 12px 34px rgba(31, 65, 91, 0.09);
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.product-family-card:hover {
  transform: translateY(-4px);
  border-color: #f4a17e;
  box-shadow: 0 18px 42px rgba(31, 65, 91, 0.15);
}

/* 桌面版頂端使用橘、藍雙色細線保留品牌識別。 */
.family-accent {
  width: 100%;
  height: 4px;
  flex: 0 0 4px;
  display: block;
  background: linear-gradient(90deg, var(--nine9-orange) 0 30%, #0067ad 30% 100%);
}

.product-family-toggle {
  width: 100%;
  display: block;
  padding: 0;
  color: inherit;
  background: transparent;
  border: 0;
  font: inherit;
  text-align: left;
  cursor: pointer;
}

.product-family-toggle:focus-visible {
  outline: 3px solid rgba(0, 103, 173, 0.32);
  outline-offset: -3px;
}

/* 標題列取消大片灰底，改用圖示框、分類編號與名稱。 */
.product-family-head {
  width: 100%;
  min-height: 112px;
  height: auto;
  padding: 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  color: #0c2237;
  background: #fff;
  border: 0;
  border-bottom: 1px solid #e6edf3;
}

.product-family-icon {
  width: 74px;
  height: 74px;
  flex: 0 0 74px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #edf7ff;
  border: 1px solid #cfe3f4;
  border-radius: 14px;
}

.product-family-img {
  width: 58px;
  height: 58px;
  display: block;
  object-fit: contain;
}

.product-family-name-wrap {
  min-width: 0;
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  padding: 0;
  background: transparent;
  overflow: visible;
}

.family-number {
  display: block;
  margin-bottom: 6px;
  color: #0067ad !important;
  font-size: 11px;
  font-weight: 900;
  line-height: 1;
  letter-spacing: 0.13em;
}

.product-family-name {
  margin: 0;
  color: #0c2237 !important;
  font-size: clamp(21px, 1.8vw, 25px);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.025em;
  white-space: normal;
  overflow-wrap: anywhere;
  word-break: normal;
}

/* 桌面版內容固定顯示，底部按鈕保持在卡片底端。 */
.product-family-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: 18px 20px 20px;
  background: #fff;
}

.related-title {
  margin: 0 0 10px;
  display: flex;
  align-items: center;
  gap: 8px;
  color: #5b6f82;
  font-size: 12px;
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.related-title::before {
  width: 8px;
  height: 8px;
  flex: 0 0 8px;
  background: var(--nine9-orange);
  border-radius: 50%;
}

.related-list {
  margin: 0 0 18px;
  padding: 0;
  list-style: none;
}

.related-list li {
  margin: 0;
  display: block;
  font-size: 15px;
  line-height: 1.3;
}

.related-list li + li {
  border-top: 1px solid #edf1f5;
}

.related-list li::before {
  content: none;
}

.related-list a {
  min-height: 42px;
  padding: 9px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  color: #273d50;
  text-decoration: none;
}

.related-list a svg {
  width: 14px;
  height: 14px;
  flex: 0 0 14px;
  color: #91a5b5;
  transition: color 0.16s ease, transform 0.16s ease;
}

.related-list a:hover {
  color: var(--nine9-orange);
}

.related-list a:hover svg {
  color: var(--nine9-orange);
  transform: translateX(3px);
}

.product-family-cta {
  min-height: 44px;
  margin-top: auto;
  padding: 10px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  color: #0c2237;
  background: #f7fafc;
  border: 1px solid #cfdce6;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 800;
  line-height: 1.2;
  text-decoration: none;
}

.product-family-cta:hover {
  color: #fff;
  background: var(--nine9-orange);
  border-color: var(--nine9-orange);
}

.product-family-cta svg {
  flex: 0 0 auto;
}

/* 桌面和平板固定展開內容，因此不顯示展開箭頭。 */
.family-chevron {
  display: none;
}

@media (max-width: 575.98px) {
  /* 手機標題區縮短，讓第一張產品卡片在首屏自然露出。 */
  .catalog-intro {
    min-height: 108px;
    align-items: flex-start;
    margin-bottom: 20px;
    padding: 19px 17px;
  }

  .catalog-eyebrow {
    margin-bottom: 5px;
  }

  .catalog-intro h1 {
    font-size: 40px;
  }

  /* 手機版使用單欄手風琴，左側橘線取代桌面雙色線。 */
  .product-family-card {
    display: block;
    min-height: 0;
    height: auto;
    border-color: #d7e3ed;
    border-radius: 15px;
    box-shadow: 0 7px 22px rgba(31, 65, 91, 0.08);
  }

  .product-family-card:hover {
    transform: none;
    border-color: #d7e3ed;
    box-shadow: 0 7px 22px rgba(31, 65, 91, 0.08);
  }

  .family-accent {
    position: absolute;
    inset: 0 auto 0 0;
    z-index: 2;
    width: 4px;
    height: auto;
    background: var(--nine9-orange);
  }

  .product-family-head {
    min-height: 88px;
    height: auto;
    padding: 11px 12px 11px 14px;
    display: grid;
    grid-template-columns: 62px minmax(0, 1fr) 32px;
    align-items: center;
    gap: 14px;
    border-bottom: 0;
  }

  .product-family-icon {
    width: 62px;
    height: 62px;
    padding: 6px;
    border-radius: 12px;
  }

  .product-family-img {
    width: 49px;
    height: 49px;
  }

  .family-number {
    margin-bottom: 4px;
    font-size: 10px;
  }

  .product-family-name {
    font-size: 18px;
    line-height: 1.08;
  }

  .family-chevron {
    width: 32px;
    height: 32px;
    display: grid;
    place-items: center;
    color: var(--nine9-orange);
    background: #fff0e9;
    border-radius: 50%;
    transition: transform 0.18s ease, color 0.18s ease, background 0.18s ease;
  }

  .family-chevron svg {
    width: 16px;
    height: 16px;
    display: block;
  }

  .product-family-card.is-open .family-chevron {
    color: #fff;
    background: var(--nine9-orange);
    transform: rotate(180deg);
  }

  .product-family-body {
    display: none;
    padding: 3px 16px 17px 24px;
    border-top: 1px solid #e7eef4;
  }

  .product-family-card.is-open .product-family-body {
    display: flex;
  }

  .related-title {
    margin-top: 13px;
  }

  .related-list a {
    min-height: 40px;
  }

  .product-family-cta {
    min-height: 42px;
  }
}

/* 尊重使用者的減少動畫設定。 */
@media (prefers-reduced-motion: reduce) {
  .product-family-card,
  .family-chevron,
  .related-list a svg {
    transition: none;
  }
}