.case-directory-main,
.case-detail-main {
  min-height: 75vh;
  padding: calc(var(--header-height) + 30px) 0 64px;
  background: linear-gradient(135deg, #fff 45%, #f8fbff);
  font-family: "Company Sans SC", "Microsoft YaHei", "PingFang SC", sans-serif;
}

.case-directory-shell,
.case-detail-shell {
  width: min(1716px, calc(100% - 60px));
  margin: 0 auto;
}

.case-directory-shell {
  display: grid;
  grid-template-columns: 235px minmax(0, 1fr);
  align-items: start;
  gap: 18px;
}

.case-directory-sidebar {
  position: sticky;
  top: calc(var(--header-height) + 24px);
}

.case-directory-sidebar h1 {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 5px 0 22px;
  color: #10294f;
  font-size: 24px;
  font-weight: 800;
}

.case-directory-sidebar h1 svg {
  width: 27px;
  height: 27px;
  fill: none;
  stroke: #106be4;
  stroke-width: 1.9;
}

.case-categories {
  display: grid;
}

.case-category {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  min-height: 52px;
  padding: 10px 22px;
  border: 1px solid #e2eaf6;
  border-radius: 6px;
  color: #14315c;
  background: #fff;
  font-size: 17px;
  font-weight: 700;
  cursor: pointer;
  text-align: left;
  transition: background-color .2s ease, color .2s ease, border-color .2s ease;
}

.case-category + .case-category {
  margin-top: -1px;
}

.case-category:hover,
.case-category:focus-visible {
  border-color: #83b9f5;
  color: #0869df;
}

.case-category.is-active {
  position: relative;
  z-index: 1;
  border-color: #1265ce;
  color: #fff;
  background: linear-gradient(115deg, #1766cf, #1660bf);
}

.case-category-chevron {
  color: #7291b7;
  font-size: 25px;
  font-weight: 400;
  line-height: 1;
}

.case-category.is-active .case-category-chevron {
  color: #fff;
}

.case-directory-results {
  min-width: 0;
}

#caseDirectory {
  scroll-margin-top: calc(var(--header-height) + 20px);
}

.case-directory-results [hidden] {
  display: none !important;
}

.case-list-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 17px;
}

.case-list-card {
  display: block;
  min-width: 0;
  overflow: hidden;
  border: 1px solid #e5ecf7;
  border-radius: 7px;
  background: #fff;
  box-shadow: 0 5px 18px rgba(19, 73, 139, .045);
  transition: transform .2s ease, box-shadow .2s ease;
}

.case-list-card:hover,
.case-list-card:focus-visible {
  box-shadow: 0 16px 32px rgba(22, 87, 171, .14);
  transform: translateY(-3px);
}

.case-list-image {
  overflow: hidden;
  aspect-ratio: 2.35 / 1;
  background: #eaf2fb;
}

.case-list-image img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .3s ease;
}

.case-list-card:hover .case-list-image img {
  transform: scale(1.045);
}

.case-list-content {
  min-height: 81px;
  padding: 12px;
}

.case-list-content h2 {
  overflow: hidden;
  margin: 0 0 8px;
  color: #0d2a52;
  font-size: clamp(15px, 1vw, 18px);
  font-weight: 800;
  line-height: 1.3;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.case-list-content p {
  display: flex;
  align-items: center;
  gap: 7px;
  margin: 0;
  color: #7184a2;
  font-size: 15px;
  line-height: 1.3;
  white-space: nowrap;
}

.case-list-content p svg,
.case-recommendation-place svg {
  width: 17px;
  height: 18px;
  flex: none;
  fill: #153f7a;
}

.case-empty {
  margin: 48px 0;
  color: #7184a2;
  text-align: center;
}

.case-pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  margin-top: 37px;
}

.case-pagination button {
  display: grid;
  width: 46px;
  height: 46px;
  place-items: center;
  border: 1px solid #e2eaf6;
  border-radius: 6px;
  color: #15396d;
  background: #fff;
  cursor: pointer;
  font-size: 17px;
}

.case-pagination button:first-child,
.case-pagination button:last-child {
  font-size: 25px;
}

.case-pagination button:hover:not(:disabled),
.case-pagination button:focus-visible,
.case-pagination button.is-active {
  border-color: #1665c7;
  color: #fff;
  background: #1665c7;
}

.case-pagination button:disabled {
  opacity: .45;
  cursor: not-allowed;
}

.case-detail-shell {
  display: grid;
  grid-template-columns: minmax(0, 1.93fr) minmax(380px, 1fr);
  align-items: start;
  gap: clamp(28px, 2vw, 36px);
}

.case-detail-content {
  min-width: 0;
  padding: 0 0 10px 14px;
}

.case-detail-breadcrumb {
  margin: 0 0 13px;
  color: #8a9ab0;
  font-size: 13px;
}

.case-detail-breadcrumb a:hover {
  color: #0b6ce6;
}

.case-not-found {
  width: min(800px, calc(100% - 40px));
  margin: 80px auto 120px;
  text-align: center;
}

.case-not-found h1 {
  color: #0d2b55;
  font-size: 36px;
}

.case-not-found p {
  color: #7184a2;
}

.case-not-found a {
  display: inline-block;
  margin-top: 20px;
  color: #0b6ce6;
  font-weight: 700;
}

.case-detail-block + .case-detail-block {
  margin-top: 34px;
}

.case-detail-block h1,
.case-detail-block h2 {
  position: relative;
  margin: 0 0 18px;
  padding-left: 27px;
  color: #0c2850;
  font-size: clamp(29px, 2vw, 36px);
  font-weight: 800;
  line-height: 1.25;
}

.case-detail-block h1::before,
.case-detail-block h2::before {
  position: absolute;
  top: 5px;
  bottom: 5px;
  left: 0;
  width: 8px;
  border-radius: 5px;
  background: #106be4;
  content: "";
}

.case-detail-block p {
  margin: 0 0 18px;
  color: #596e8c;
  font-size: clamp(17px, 1.2vw, 21px);
  line-height: 1.8;
  letter-spacing: .015em;
}

.case-detail-photo {
  display: block;
  width: 100%;
  aspect-ratio: 3.3 / 1;
  border-radius: 12px;
  background: #eaf2fc;
  object-fit: cover;
}

.case-detail-gallery {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.case-detail-gallery button {
  display: block;
  width: 100%;
  padding: 0;
  overflow: hidden;
  border: 0;
  border-radius: 10px;
  background: #eaf2fc;
  cursor: pointer;
}

.case-detail-gallery button[aria-pressed="true"] {
  outline: 3px solid #1675eb;
  outline-offset: 3px;
}

.case-detail-gallery img {
  display: block;
  width: 100%;
  aspect-ratio: 2.45 / 1;
  object-fit: cover;
  transition: transform .2s ease;
}

.case-detail-gallery button:hover img {
  transform: scale(1.04);
}

.case-related {
  padding: 30px;
  border: 1px solid #dce9fc;
  border-radius: 12px;
  background: linear-gradient(120deg, #fafdff, #fff);
}

.case-related-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin: 0 0 22px;
}

.case-related-heading h2 {
  margin: 0;
  color: #0d2b55;
  font-size: clamp(23px, 1.7vw, 30px);
}

.case-related-heading a {
  color: #0b6ae7;
  font-size: 17px;
  white-space: nowrap;
}

.case-related-heading a span {
  margin-left: 8px;
  font-size: 25px;
}

.case-recommendation {
  display: grid;
  grid-template-columns: 36% minmax(0, 1fr) 40px;
  align-items: center;
  gap: 20px;
  min-width: 0;
  padding: 0 0 16px;
}

.case-recommendation + .case-recommendation {
  padding-top: 16px;
  border-top: 1px solid #e0e8f4;
}

.case-recommendation:last-child {
  padding-bottom: 0;
}

.case-recommendation img {
  width: 100%;
  height: 116px;
  border-radius: 10px;
  object-fit: cover;
}

.case-recommendation-copy {
  display: grid;
  align-content: center;
  gap: 8px;
  min-width: 0;
}

.case-recommendation-copy strong {
  overflow: hidden;
  color: #122e57;
  font-size: clamp(15px, 1.15vw, 19px);
  line-height: 1.3;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.case-recommendation-place {
  display: flex;
  align-items: center;
  gap: 7px;
  color: #7185a2;
  font-size: 15px;
  white-space: nowrap;
}

.case-recommendation-place svg {
  fill: none;
  stroke: #254a80;
  stroke-width: 1.5;
}

.case-recommendation-copy small {
  overflow: hidden;
  color: #7285a0;
  font-size: 15px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.case-recommendation-arrow {
  display: grid;
  width: 40px;
  height: 40px;
  place-items: center;
  border-radius: 50%;
  color: #0b6ce6;
  background: #e3efff;
  font-size: 26px;
  line-height: 1;
}

.case-recommendation:hover .case-recommendation-arrow {
  color: #fff;
  background: #0b6ce6;
}

@media (max-width: 1450px) {
  .case-list-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .case-recommendation { grid-template-columns: 32% minmax(0, 1fr) 34px; gap: 12px; }
  .case-recommendation-arrow { width: 34px; height: 34px; }
  .case-related { padding: 22px; }
}

@media (max-width: 1120px) {
  .case-directory-shell,
  .case-detail-shell { width: calc(100% - 48px); }
  .case-directory-shell { grid-template-columns: 190px minmax(0, 1fr); }
  .case-list-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .case-detail-shell { grid-template-columns: minmax(0, 1fr); }
  .case-related { margin-top: 18px; }
  .case-recommendation { grid-template-columns: 190px minmax(0, 1fr) 40px; }
}

@media (max-width: 720px) {
  .case-directory-main,
  .case-detail-main { padding-top: calc(var(--header-height) + 22px); }
  .case-directory-shell,
  .case-detail-shell { width: calc(100% - 32px); }
  .case-directory-shell { display: block; }
  .case-directory-sidebar { position: static; margin-bottom: 20px; }
  .case-directory-sidebar h1 { margin-bottom: 14px; }
  .case-categories {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    overflow: visible;
    padding: 2px 0 8px;
  }
  .case-category { flex: none; width: auto; min-height: 42px; padding: 8px 12px; font-size: 14px; }
  .case-category + .case-category { margin-top: 0; }
  .case-category-chevron { display: none; }
  .case-list-grid { gap: 12px; }
  .case-detail-content { padding: 0; }
  .case-detail-photo { aspect-ratio: 1.8 / 1; }
  .case-detail-gallery { gap: 10px; }
  .case-detail-gallery img { aspect-ratio: 1.35 / 1; }
}

@media (max-width: 540px) {
  .case-list-grid { grid-template-columns: 1fr; }
  .case-list-image { aspect-ratio: 2 / 1; }
  .case-recommendation { grid-template-columns: 100px minmax(0, 1fr) 28px; gap: 10px; }
  .case-recommendation img { height: 82px; }
  .case-recommendation-arrow { width: 28px; height: 28px; font-size: 20px; }
  .case-recommendation-copy small { display: none; }
  .case-recommendation-place { font-size: 12px; }
  .case-related { padding: 16px; }
  .case-related-heading h2 { font-size: 21px; }
  .case-related-heading a { font-size: 14px; }
}


/* ==========================================================================
   工程案例页（案例列表）：整体改为黑色调
   - main 背景改黑（style.css 里有 main{background:#666666 !important}，故带 !important）
   - 分类按钮 / 案例卡片 / 分页按钮：白底 -> #141414
   - 原深蓝文字 -> 白 / 浅灰
   - 选中分类、当前页码、箭头等强调色 -> 品牌橙（与关于我们、视频页一致）
   只作用于 .case-directory-main，案例详情页（.case-detail-main）保持原样。
   ========================================================================== */

.case-directory-main {
  background: #000 !important;
  color: #fff;
}

/* 左侧标题与图标 */
.case-directory-main .case-directory-sidebar h1 {
  color: #fff;
}

.case-directory-main .case-directory-sidebar h1 svg {
  stroke: #ff6a00;
}

/* 分类按钮 */
.case-directory-main .case-category {
  border-color: rgba(255, 255, 255, 0.12);
  color: rgba(255, 255, 255, 0.82);
  background: #141414;
}

.case-directory-main .case-category:hover {
  border-color: rgba(255, 255, 255, 0.32);
  color: #fff;
}

.case-directory-main .case-category.is-active {
  border-color: #ff6a00;
  color: #fff;
  background: linear-gradient(115deg, #ff7a1a, #f05a00);
}

.case-directory-main .case-category-chevron {
  color: rgba(255, 255, 255, 0.45);
}

.case-directory-main .case-category.is-active .case-category-chevron {
  color: #fff;
}

/* 案例卡片 */
.case-directory-main .case-list-card {
  border-color: rgba(255, 255, 255, 0.1);
  background: #141414;
  box-shadow: none;
}

.case-directory-main .case-list-card:hover,
.case-directory-main .case-list-card:focus-visible {
  border-color: rgba(255, 106, 0, 0.55);
  box-shadow: 0 16px 32px rgba(0, 0, 0, 0.6);
}

.case-directory-main .case-list-image {
  background: #0f0f0f;
}

.case-directory-main .case-list-content h2 {
  color: #fff;
}

.case-directory-main .case-list-content p {
  color: rgba(255, 255, 255, 0.6);
}

.case-directory-main .case-list-content p svg {
  fill: #ff6a00;
}

.case-directory-main .case-empty {
  color: rgba(255, 255, 255, 0.6);
}

/* 分页 */
.case-directory-main .case-pagination button {
  border-color: rgba(255, 255, 255, 0.14);
  color: rgba(255, 255, 255, 0.8);
  background: #141414;
}

.case-directory-main .case-pagination button:hover:not(:disabled),
.case-directory-main .case-pagination button:focus-visible,
.case-directory-main .case-pagination button.is-active {
  border-color: #ff6a00;
  color: #fff;
  background: #ff6a00;
}


/* ==========================================================================
   工程案例页：左侧「案例分类」模块整体放大一档
   原来窄屏（<=1450px）下侧栏只有 190px、按钮 52px 高、字号 17px，看着偏小。
   这里在 >=1121px（仍是左右分栏布局）把整块放大：
     侧栏 190/235 -> 255px、按钮 52 -> 62px 高、字号 17 -> 19px、
     标题 24 -> 28px、箭头 25 -> 28px。
   <=1120px 会变成上下堆叠的横向筛选条，保持原紧凑尺寸不动。
   ========================================================================== */

/* ==========================================================================
   工程案例列表页：放大「案例卡片」
   分类栏尺寸完全恢复原样（不在这一层改动）。
   卡片放大方式：
   - 图片区从 2.35:1 加高到 1.9:1（同宽度下高约 +24%）
   - 内容区内边距 12 -> 16/18、最小高度 81 -> 96
   - 标题 18 -> 20px、地点 15 -> 16px、定位图标略放大
   - 卡片间距 17 -> 22，整体更疏朗
   ========================================================================== */

@media (min-width: 1121px) {
  .case-directory-main .case-list-grid {
    gap: 22px;
  }

  .case-directory-main .case-list-image {
    aspect-ratio: 1.9 / 1;
  }

  .case-directory-main .case-list-content {
    min-height: 96px;
    padding: 16px 18px;
  }

  .case-directory-main .case-list-content h2 {
    margin-bottom: 9px;
    font-size: 20px;
  }

  .case-directory-main .case-list-content p {
    gap: 8px;
    font-size: 16px;
  }

  .case-directory-main .case-list-content p svg {
    width: 18px;
    height: 19px;
  }
}


/* ==========================================================================
   工程案例列表页：底部「相关推荐」模块
   深色卡片，与案例列表卡片同一套视觉（#141414 底 + 白色 10% 描边 +
   悬停橙色描边）；4 列，窄屏降为 2 列 / 1 列。
   ========================================================================== */

.case-recommend {
  margin-top: 72px;
}

.case-recommend-inner {
  width: min(1716px, calc(100% - 60px));
  margin: 0 auto;
}

.case-recommend-heading {
  margin-bottom: 22px;
}

.case-recommend-kicker {
  margin: 0 0 6px;
  color: #ff6a00;
  font: 700 12px/1.2 Arial, sans-serif;
  letter-spacing: 0.16em;
}

.case-recommend-heading h2 {
  margin: 0;
  color: #ffffff;
  font-size: 26px;
  font-weight: 800;
  line-height: 1.25;
}

.case-recommend-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 17px;
}

.case-recommend-card {
  display: block;
  min-width: 0;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 7px;
  background: #141414;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.case-recommend-card:hover,
.case-recommend-card:focus-visible {
  border-color: rgba(255, 106, 0, 0.55);
  box-shadow: 0 16px 32px rgba(0, 0, 0, 0.6);
  transform: translateY(-3px);
}

.case-recommend-image {
  overflow: hidden;
  aspect-ratio: 2.35 / 1;
  background: #0f0f0f;
}

.case-recommend-image img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.case-recommend-card:hover .case-recommend-image img {
  transform: scale(1.045);
}

.case-recommend-body {
  padding: 12px;
}

.case-recommend-body h3 {
  overflow: hidden;
  margin: 0 0 6px;
  color: #ffffff;
  font-size: 16px;
  font-weight: 800;
  line-height: 1.35;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.case-recommend-body p {
  overflow: hidden;
  margin: 0;
  color: rgba(255, 255, 255, 0.6);
  font-size: 14px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

@media (max-width: 1120px) {
  .case-recommend-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 620px) {
  .case-recommend-inner {
    width: calc(100% - 32px);
  }

  .case-recommend-grid {
    grid-template-columns: 1fr;
  }

  .case-recommend-heading h2 {
    font-size: 22px;
  }
}