/* =====================================================================
   Tencent Cloud 风格首页样式 (首页 index.html 专属)
   注意：--tc-* 颜色变量默认取下方值；前台 header 末尾会引入
   /theme-admin1/theme-config.php（后台可改），其值将覆盖这里的默认值。
   这样即使后台接口不可用，页面也能正常显示默认蓝色风格。
   ===================================================================== */

:root {
  --tc-blue: #006EFF;
  --tc-blue-d: #0052D9;
  --tc-blue-l: #E8F3FF;
  --tc-ink: #0052D9;
  --tc-ink-2: #0052D9;
  --tc-text: #1D2129;
  --tc-sub: #86909C;
  --tc-bg: #F5F7FA;
  --tc-line: #E5E6EB;
  --tc-radius: 8px;
  --tc-shadow: 0 6px 20px rgba(10, 31, 68, .08);
  --tc-shadow-h: 0 12px 30px rgba(0, 110, 255, .18);
  --tc-gradient: linear-gradient(135deg, #006EFF 0%, #0052D9 100%);
}

/* 容器 */
.tc-container {
  width: 1200px;
  max-width: 92%;
  margin: 0 auto;
}

/* =====================================================================
   产品与服务分类导航
   参考专业版 www 主题 comp_products.html 的「标题 + 分类网格」：
   居中标题 / 居中副标题+查看全部 / 等分分类网格 / 悬停蓝色下划线
   ===================================================================== */
.tc-productnav {
  background: #fff;
  padding: 48px 0 28px;
}
.tc-productnav-head {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 16px 0 46px;
}
.tc-productnav-title {
  margin: 0;
  font-size: 30px;
  line-height: 40px;
  font-weight: 600;
  letter-spacing: .5px;
  color: var(--tc-text, #1d2129);
}
.tc-productnav-desc {
  margin: 18px 0 0;
  font-size: 16px;
  line-height: 24px;
  color: rgba(34, 34, 34, .9);
}
.tc-productnav-more {
  margin-left: 6px;
  color: var(--tc-blue, #165DFF);
  text-decoration: none;
  white-space: nowrap;
}
.tc-productnav-more:hover { text-decoration: underline; }
.tc-productnav-more i {
  display: inline-block;
  margin-left: 2px;
  font-style: normal;
  transition: transform .25s;
}
.tc-productnav-more:hover i { transform: translateX(3px); }

/* 分类网格：≤6 类按实际数量排满一行并居中，>6 类固定 6 列换行 */
.tc-productnav-grid {
  display: grid;
  gap: 10px;
  margin: 0 auto;
}
.tc-productnav-grid.cols-1 { grid-template-columns: 1fr; max-width: min(280px, 100%); }
.tc-productnav-grid.cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); max-width: min(520px, 100%); }
.tc-productnav-grid.cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); max-width: min(780px, 100%); }
.tc-productnav-grid.cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); max-width: min(1040px, 100%); }
.tc-productnav-grid.cols-5 { grid-template-columns: repeat(5, minmax(0, 1fr)); max-width: min(1200px, 100%); }
.tc-productnav-grid.cols-6 { grid-template-columns: repeat(6, minmax(0, 1fr)); max-width: min(1200px, 100%); }
.tc-productnav-item {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 6px 8px 26px;
  font-size: 16px;
  font-weight: 500;
  line-height: 26px;
  color: var(--tc-text, #1d2129);
  text-align: center;
  text-decoration: none;
  transition: color .3s;
}
.tc-productnav-item::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  width: 0;
  border-bottom: 2px solid var(--tc-blue, #165DFF);
  transition: width .45s ease-out;
}
.tc-productnav-item:hover { color: var(--tc-blue, #165DFF); }
.tc-productnav-item:hover::after { width: 100%; }

/* —— 产品分组：Tab + 卡片（Tab = 一级分组，卡片 = 二级分组；纯 CSS radio 切换，无 JS） ——
   radio 在前、bar/panels 在后为同级兄弟，才能用 :checked ~ 控制选中态 */
.tc-prodtabs-cb {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: 0;
  opacity: 0;
  pointer-events: none;
}
.tc-prodtabs-bar {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 4px 8px;
  padding: 2px 0 28px;
}
.tc-prodtabs-tab {
  position: relative;
  padding: 10px 18px;
  font-size: 15px;
  line-height: 1;
  color: #4e5969;
  white-space: nowrap;
  cursor: pointer;
  user-select: none;
  transition: color .2s;
}
.tc-prodtabs-tab:hover { color: var(--tc-blue, #165DFF); }
/* 选中 Tab：蓝色 + 底部下划线 */
#tcPTab1:checked ~ .tc-prodtabs-bar .tl1,
#tcPTab2:checked ~ .tc-prodtabs-bar .tl2,
#tcPTab3:checked ~ .tc-prodtabs-bar .tl3,
#tcPTab4:checked ~ .tc-prodtabs-bar .tl4,
#tcPTab5:checked ~ .tc-prodtabs-bar .tl5,
#tcPTab6:checked ~ .tc-prodtabs-bar .tl6,
#tcPTab7:checked ~ .tc-prodtabs-bar .tl7,
#tcPTab8:checked ~ .tc-prodtabs-bar .tl8 {
  color: var(--tc-blue, #165DFF);
  font-weight: 600;
}
#tcPTab1:checked ~ .tc-prodtabs-bar .tl1::after,
#tcPTab2:checked ~ .tc-prodtabs-bar .tl2::after,
#tcPTab3:checked ~ .tc-prodtabs-bar .tl3::after,
#tcPTab4:checked ~ .tc-prodtabs-bar .tl4::after,
#tcPTab5:checked ~ .tc-prodtabs-bar .tl5::after,
#tcPTab6:checked ~ .tc-prodtabs-bar .tl6::after,
#tcPTab7:checked ~ .tc-prodtabs-bar .tl7::after,
#tcPTab8:checked ~ .tc-prodtabs-bar .tl8::after {
  content: '';
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 0;
  height: 3px;
  border-radius: 2px;
  background: var(--tc-blue, #165DFF);
}
.tc-prodtabs-panels { max-width: 1200px; margin: 0 auto; }
.tc-prodtabs-panel {
  display: none;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}
#tcPTab1:checked ~ .tc-prodtabs-panels .p1,
#tcPTab2:checked ~ .tc-prodtabs-panels .p2,
#tcPTab3:checked ~ .tc-prodtabs-panels .p3,
#tcPTab4:checked ~ .tc-prodtabs-panels .p4,
#tcPTab5:checked ~ .tc-prodtabs-panels .p5,
#tcPTab6:checked ~ .tc-prodtabs-panels .p6,
#tcPTab7:checked ~ .tc-prodtabs-panels .p7,
#tcPTab8:checked ~ .tc-prodtabs-panels .p8 { display: grid; }
.tc-prodcard {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 22px 20px 18px;
  background: #fff;
  border: 1px solid #eceff5;
  border-radius: 12px;
  text-decoration: none;
  transition: border-color .25s, box-shadow .25s, transform .25s;
}
.tc-prodcard:hover {
  border-color: #c9d8ff;
  box-shadow: 0 10px 26px rgba(22, 93, 255, .10);
  transform: translateY(-2px);
}
.tc-prodcard-tag {
  align-self: flex-start;
  padding: 4px 8px;
  font-size: 12px;
  line-height: 1;
  color: var(--tc-blue, #165DFF);
  background: #f2f6ff;
  border-radius: 4px;
}
.tc-prodcard-title {
  margin: 2px 0 0;
  font-size: 17px;
  line-height: 24px;
  font-weight: 600;
  color: var(--tc-text, #1d2129);
}
.tc-prodcard-desc {
  margin: 0;
  min-height: 40px;
  font-size: 13px;
  line-height: 20px;
  color: #86909c;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.tc-prodcard-btn {
  margin-top: auto;
  align-self: flex-start;
  display: inline-flex;
  align-items: center;
  gap: 2px;
  padding: 7px 16px;
  font-size: 13px;
  line-height: 1;
  color: #fff;
  background: var(--tc-blue, #165DFF);
  border-radius: 6px;
  transition: background .2s;
}
.tc-prodcard-btn i { font-style: normal; transition: transform .2s; }
.tc-prodcard:hover .tc-prodcard-btn { background: #0e42d2; }
.tc-prodcard:hover .tc-prodcard-btn i { transform: translateX(2px); }

/* 平板/手机：降列，Tab 栏横向滚动 */
@media (max-width: 1280px) {
  .tc-prodtabs-panel { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (max-width: 992px) {
  .tc-prodtabs-panel { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .tc-prodtabs-bar {
    justify-content: flex-start;
    flex-wrap: nowrap;
    overflow-x: auto;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
  }
  .tc-prodtabs-bar::-webkit-scrollbar { display: none; }
}
@media (max-width: 768px) {
  .tc-prodtabs-panel { grid-template-columns: 1fr; }
  .tc-prodtabs-tab { padding: 9px 14px; font-size: 14px; }
  .tc-prodcard { padding: 18px 16px 16px; }
}

/* 分类导航：平板自适应
   只对「列数多于实际分类」的情况降列，cols-1/cols-2/cols-3 保持原列数并居中，
   避免分类很少时右侧留出空位。 */
@media (max-width: 1280px) {
  .tc-productnav-grid.cols-5,
  .tc-productnav-grid.cols-6 { grid-template-columns: repeat(4, minmax(0, 1fr)); max-width: 100%; }
}
@media (max-width: 992px) {
  .tc-productnav { padding: 40px 0 16px; }
  .tc-productnav-head { padding: 12px 0 34px; }
  .tc-productnav-title { font-size: 24px; line-height: 32px; }
  .tc-productnav-desc { margin-top: 12px; font-size: 14px; line-height: 22px; }
  .tc-productnav-grid.cols-4,
  .tc-productnav-grid.cols-5,
  .tc-productnav-grid.cols-6 { grid-template-columns: repeat(3, minmax(0, 1fr)); max-width: 100%; }
  .tc-productnav-item { font-size: 15px; }
}

/* 手机端下拉：隐藏 checkbox 驱动（无需 JS），横向标签栏桌面隐藏 */
.tc-productnav-cb {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: 0;
  opacity: 0;
  pointer-events: none;
}
.tc-productnav-bar { display: none; }

/* 手机端：横向分组标签栏 + 右侧下拉箭头，点箭头展开全部分组胶囊 */
@media (max-width: 768px) {
  .tc-productnav { padding: 0 0 14px; background: #f5f7fa; }
  .tc-productnav > .tc-container { width: 100%; max-width: 100%; padding: 0 12px; }
  .tc-productnav-head { padding: 26px 4px 20px; }
  .tc-productnav-title { font-size: 19px; line-height: 27px; }
  .tc-productnav-desc { margin-top: 8px; font-size: 13px; line-height: 21px; }

  /* 标签栏：当前分组蓝色 + 底部下划线，右侧箭头固定不滚动 */
  .tc-productnav-bar {
    display: flex;
    align-items: stretch;
    height: 52px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(10, 31, 68, .06);
    overflow: hidden;
  }
  .tc-productnav-cb:checked ~ .tc-productnav-bar { border-radius: 8px 8px 0 0; }
  .tc-productnav-tabs {
    flex: 1 1 auto;
    min-width: 0;
    display: flex;
    align-items: stretch;
    overflow-x: auto;
    overflow-y: hidden;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
  }
  .tc-productnav-tabs::-webkit-scrollbar { display: none; }
  .tc-productnav-tab {
    position: relative;
    flex: 0 0 auto;
    display: flex;
    align-items: center;
    height: 100%;
    padding: 0 16px;
    font-size: 15px;
    line-height: 1;
    color: #1d2129;
    text-decoration: none;
    white-space: nowrap;
  }
  .tc-productnav-tab.is-active { color: var(--tc-blue, #165DFF); font-weight: 600; }
  .tc-productnav-tab.is-active::after {
    content: '';
    position: absolute;
    left: 16px;
    right: 16px;
    bottom: 5px;
    height: 3px;
    background: var(--tc-blue, #165DFF);
    border-radius: 2px;
  }
  .tc-productnav-btn {
    flex: 0 0 54px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-left: 1px solid #f0f2f5;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
    user-select: none;
  }
  .tc-productnav-arrow {
    font-style: normal;
    font-size: 14px;
    line-height: 1;
    color: #1d2129;
    transition: transform .25s;
  }
  /* 收起时箭头朝下，展开时朝上 */
  .tc-productnav-cb:checked ~ .tc-productnav-bar .tc-productnav-arrow { transform: rotate(180deg); }
  .tc-productnav-cb:not(:checked) ~ .tc-productnav-grid { display: none; }

  /* 展开后的全部分组胶囊 */
  .tc-productnav-grid,
  .tc-productnav-grid.cols-1,
  .tc-productnav-grid.cols-2,
  .tc-productnav-grid.cols-3,
  .tc-productnav-grid.cols-4,
  .tc-productnav-grid.cols-5,
  .tc-productnav-grid.cols-6 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px;
    max-width: 100%;
    padding: 12px 12px 14px;
    background: #fff;
    border-radius: 0 0 8px 8px;
  }
  .tc-productnav-item {
    padding: 11px 4px;
    font-size: 14px;
    line-height: 20px;
    color: #1d2129;
    background: #e9eff8;
    border-radius: 6px;
    transition: background .2s, color .2s;
  }
  .tc-productnav-item::after { display: none; }
  .tc-productnav-item.is-active {
    color: #fff;
    background: var(--tc-blue, #165DFF);
  }
  .tc-productnav-item:hover,
  .tc-productnav-item:active { color: #1d2129; background: #dbe6f7; }
  .tc-productnav-item.is-active:hover,
  .tc-productnav-item.is-active:active { color: #fff; background: var(--tc-blue, #165DFF); }
}
@media (max-width: 360px) {
  .tc-productnav-tab { padding: 0 12px; font-size: 14px; }
  .tc-productnav-tab.is-active::after { left: 12px; right: 12px; }
  .tc-productnav-item { font-size: 13px; }
}

/* 区块通用 */
.tc-section {
  padding: 64px 0;
}
.tc-section--alt {
  background: var(--tc-bg);
}

/* 区块标题 */
.tc-sec-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 36px;
}
.tc-sec-title {
  font-size: 30px;
  font-weight: 600;
  color: var(--tc-text);
  letter-spacing: 1px;
  position: relative;
  padding-left: 16px;
  line-height: 1.2;
}
.tc-sec-title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 5px;
  height: 26px;
  border-radius: 3px;
  background: var(--tc-gradient);
}
.tc-sec-sub {
  margin-top: 10px;
  font-size: 15px;
  color: var(--tc-sub);
}
.tc-sec-more {
  flex: none;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 14px;
  color: var(--tc-blue);
  text-decoration: none;
  padding: 8px 16px;
  border: 1px solid var(--tc-line);
  border-radius: 20px;
  transition: .25s;
}
.tc-sec-more:hover {
  border-color: var(--tc-blue);
  background: var(--tc-blue-l);
}
.tc-sec-more i {
  font-style: normal;
  font-size: 18px;
  line-height: 1;
}

/* =====================================================================
   1. 产品与服务（热门产品）
   ===================================================================== */
.tc-products {
  background: #fff;
}
.tc-prod-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 28px;
}
.tc-prod-tab {
  border: 1px solid var(--tc-line);
  background: #fff;
  color: var(--tc-text);
  font-size: 15px;
  padding: 9px 22px;
  border-radius: 22px;
  cursor: pointer;
  transition: .25s;
}
.tc-prod-tab:hover {
  color: var(--tc-blue);
  border-color: var(--tc-blue);
}
.tc-prod-tab.is-active {
  background: var(--tc-gradient);
  border-color: transparent;
  color: #fff;
  box-shadow: var(--tc-shadow-h);
}
.tc-prod-panel {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.tc-prod-panel.is-hidden {
  display: none;
}
.tc-prod-card {
  display: block;
  position: relative;
  padding: 26px 24px;
  border: 1px solid var(--tc-line);
  border-radius: var(--tc-radius);
  background: #fff;
  text-decoration: none;
  color: inherit;
  transition: .25s;
  overflow: hidden;
}
.tc-prod-card::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 3px;
  background: var(--tc-gradient);
  transform: scaleX(0);
  transform-origin: left;
  transition: .3s;
}
.tc-prod-card:hover {
  border-color: transparent;
  box-shadow: var(--tc-shadow-h);
  transform: translateY(-4px);
}
.tc-prod-card:hover::after {
  transform: scaleX(1);
}
.tc-prod-icon {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: var(--tc-blue-l);
  color: var(--tc-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 16px;
}
.tc-prod-card h4 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--tc-text);
}
.tc-prod-card p {
  font-size: 13px;
  color: var(--tc-sub);
  line-height: 1.6;
  min-height: 42px;
  margin: 0;
}
.tc-prod-go {
  display: inline-block;
  margin-top: 14px;
  font-size: 13px;
  color: var(--tc-blue);
  font-weight: 500;
}

/* =====================================================================
   2. 行业解决方案（横向手风琴）
   参考腾讯云「服务千行百业的全栈解决方案」：居中标题 + 副标题 +
   等宽卡片；鼠标悬停时该卡片横向展开，显示行业简介与「在线咨询」按钮
   ===================================================================== */
.tc-industry {
  background: #fff;
}
/* 该区块比通用 1200px 容器更宽，充分利用左右空间；
   配合 max-width 与相对 padding，各分辨率下都不会横向溢出 */
.tc-container-wide {
  width: 100%;
  max-width: 1680px;
  padding: 0 44px;
  box-sizing: border-box;
}
@media (max-width: 1440px) {
  .tc-container-wide { padding: 0 36px; }
}
@media (max-width: 1100px) {
  .tc-container-wide { padding: 0 28px; }
}
.tc-industry-head {
  text-align: center;
  padding: 4px 0 44px;
}
.tc-industry-title {
  margin: 0;
  font-size: 30px;
  line-height: 40px;
  font-weight: 600;
  letter-spacing: .5px;
  color: var(--tc-text);
}
.tc-industry-sub {
  margin: 16px 0 0;
  font-size: 16px;
  line-height: 24px;
  color: rgba(34, 34, 34, .9);
}
/* 手风琴容器：所有卡片等宽，悬停的卡片 flex-grow 变大；
   高度随视口宽度自适应（400~480px），避免宽屏下显得扁、窄屏下过高 */
.tc-industry-panel {
  display: flex;
  height: clamp(400px, 30vw, 480px);
  overflow: hidden;
  border-radius: var(--tc-radius);
  background: #0b1f47;
}
.tc-industry-card {
  position: relative;
  flex: 1 1 0;
  min-width: 0;
  overflow: hidden;
  border-right: 1px solid rgba(255, 255, 255, .14);
  transition: flex-grow .55s cubic-bezier(.25, .8, .25, 1);
}
.tc-industry-card:last-child { border-right: 0; }
.tc-industry-card:hover { flex-grow: 5; }

.tc-industry-card-bg {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: #1b3a7a;
  background-size: cover;
  background-position: center;
  transform: scale(1.03);
  transition: transform .9s ease;
}
.tc-industry-card:hover .tc-industry-card-bg { transform: scale(1.1); }

.tc-industry-card-mask {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(180deg, rgba(5, 20, 55, .70) 0%, rgba(5, 20, 55, .40) 42%, rgba(5, 20, 55, .82) 100%);
  transition: background .4s;
}
.tc-industry-card:hover .tc-industry-card-mask {
  background: linear-gradient(180deg, rgba(5, 20, 55, .76) 0%, rgba(5, 20, 55, .52) 40%, rgba(5, 20, 55, .88) 100%);
}

/* 卡片标题：收起时也能看清，所以固定宽度让其自动换行 */
.tc-industry-card-title {
  position: absolute;
  left: 26px;
  top: 26px;
  z-index: 2;
  margin: 0;
  width: 150px;
  font-size: 19px;
  line-height: 28px;
  font-weight: 600;
  color: #fff;
  text-shadow: 0 2px 10px rgba(0, 0, 0, .45);
}
.tc-industry-card-title a {
  color: inherit;
  text-decoration: none;
}

/* 展开后出现的简介 + 咨询按钮：定宽，避免展开动画过程中文字回流抖动 */
.tc-industry-card-body {
  position: absolute;
  left: 26px;
  bottom: 32px;
  z-index: 2;
  width: 480px;
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .35s ease .1s, transform .5s ease .1s;
  pointer-events: none;
}
.tc-industry-card:hover .tc-industry-card-body {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}
.tc-industry-card-desc {
  margin: 0 0 24px;
  font-size: 15px;
  line-height: 28px;
  color: rgba(255, 255, 255, .9);
}
.tc-industry-card-btn {
  display: inline-block;
  height: 40px;
  padding: 0 28px;
  font-size: 15px;
  line-height: 40px;
  color: #fff;
  text-decoration: none;
  border-radius: 4px;
  background: var(--tc-blue);
  transition: background .25s, transform .25s;
}
.tc-industry-card-btn:hover {
  background: var(--tc-blue-d);
  transform: translateY(-2px);
}

/* 中等宽度（993~1140）：卡片变窄，标题/简介几何随之收紧，
   否则 150px 的标题盒会超出卡片被 overflow:hidden 裁掉 */
@media (max-width: 1140px) and (min-width: 993px) {
  .tc-industry-card-title {
    left: 16px;
    top: 20px;
    width: 118px;
    font-size: 16px;
    line-height: 24px;
  }
  .tc-industry-card-body {
    left: 16px;
    bottom: 22px;
    width: 400px;
  }
  .tc-industry-card-desc {
    margin-bottom: 18px;
    font-size: 14px;
    line-height: 25px;
  }
}

/* 触摸屏没有 hover：取消手风琴，改为纵向堆叠、信息直出 */
@media (max-width: 992px) {
  .tc-industry-panel {
    display: block;
    height: auto;
    background: transparent;
  }
  .tc-industry-card,
  .tc-industry-card:hover {
    display: block;
    flex: none;
    height: auto;
    margin-bottom: 14px;
    overflow: hidden;
    border-right: 0;
    border-radius: var(--tc-radius);
  }
  .tc-industry-card:last-child { margin-bottom: 0; }
  /* 注意：必须用 relative 而不是 static —— 背景图/遮罩是 absolute 定位的，
     static 元素的 z-index 无效，会被背景图盖住 */
  .tc-industry-card-title {
    position: relative;
    left: auto;
    top: auto;
    width: auto;
    padding: 26px 24px 0;
    font-size: 18px;
    line-height: 26px;
  }
  .tc-industry-card-body {
    position: relative;
    left: auto;
    bottom: auto;
    width: auto;
    padding: 12px 24px 26px;
    opacity: 1;
    transform: none;
    pointer-events: auto;
  }
  .tc-industry-card-desc {
    margin-bottom: 16px;
    font-size: 14px;
    line-height: 24px;
  }
}

/* =====================================================================
   3. 为什么选择我们（优势）
   ===================================================================== */
.tc-adv-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.tc-adv-card {
  background: #fff;
  border: 1px solid var(--tc-line);
  border-radius: var(--tc-radius);
  padding: 32px 26px;
  text-align: center;
  transition: .25s;
}
.tc-adv-card:hover {
  box-shadow: var(--tc-shadow);
  transform: translateY(-4px);
}
.tc-adv-num {
  font-size: 34px;
  font-weight: 700;
  background: var(--tc-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 12px;
}
.tc-adv-card h4 {
  font-size: 17px;
  font-weight: 600;
  color: var(--tc-text);
  margin-bottom: 10px;
}
.tc-adv-card p {
  font-size: 13px;
  line-height: 1.7;
  color: var(--tc-sub);
  margin: 0;
}

/* =====================================================================
   4. 数据看板（蓝色统计条）
   ===================================================================== */
.tc-stats {
  background: #fff;
  color: var(--tc-text);
  border-top: 1px solid var(--tc-line);
  border-bottom: 1px solid var(--tc-line);
}
.tc-stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  text-align: center;
}
.tc-stat-num {
  font-size: 44px;
  font-weight: 700;
  line-height: 1.1;
  background: var(--tc-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.tc-stat-num small {
  font-size: 22px;
  font-weight: 600;
  -webkit-text-fill-color: var(--tc-blue);
}
.tc-stat-label {
  margin-top: 8px;
  font-size: 15px;
  color: var(--tc-sub);
}

/* =====================================================================
   5. 全球基础设施（地图）
   ===================================================================== */
.tc-global {
  background: #fff;
}
.tc-global .intl-map-dot-layer {
  background: rgba(0, 110, 255, .25);
  border: 1px solid var(--tc-blue);
}
.tc-global .intl-map-dot.style-1 .intl-map-dot-layer {
  background: rgba(0, 110, 255, .25);
  border-color: var(--tc-blue);
}
.tc-global .intl-map-dot.style-2 .intl-map-dot-layer {
  background: rgba(0, 82, 217, .18);
  border-color: var(--tc-blue-d);
}
.tc-global .intl-map-dot-tit {
  color: var(--tc-text);
}
.tc-global .intl-map-bubble-inner {
  border-top: 3px solid var(--tc-blue);
}

/* =====================================================================
   6. 合作伙伴 logo 墙
   ===================================================================== */
.tc-partners {
  background: var(--tc-bg);
  padding: 40px 0;
}
.tc-partners .tc-sec-head { margin-bottom: 22px; }
.tc-partners .tc-sec-title { font-size: 24px; }
.tc-partners .tc-sec-sub { font-size: 14px; }
.tc-logo-wall {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 12px;
}
.tc-logo-wall li {
  list-style: none;
  height: 64px;
  background: #fff;
  border: 1px solid var(--tc-line);
  border-radius: var(--tc-radius);
  background-size: 52% auto;
  background-position: center;
  background-repeat: no-repeat;
  transition: .25s;
}
.tc-logo-wall li:hover {
  border-color: var(--tc-blue);
  box-shadow: var(--tc-shadow);
}

/* 友情链接（友联配置） */
.tc-links {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px 18px;
  margin-top: 24px;
  padding-top: 22px;
  border-top: 1px solid var(--tc-line);
}
.tc-links-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--tc-text);
  flex-shrink: 0;
}
.tc-links-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
}
.tc-links-list a,
.tc-links-list span {
  font-size: 14px;
  color: var(--tc-sub);
  text-decoration: none;
  transition: color .2s;
}
.tc-links-list a:hover {
  color: var(--tc-blue);
}

/* =====================================================================
   7. 新闻资讯
   ===================================================================== */
.tc-news {
  background: #fff;
}
.tc-news-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}
.tc-news-feature {
  border: 1px solid var(--tc-line);
  border-radius: var(--tc-radius);
  padding: 28px;
  background: linear-gradient(160deg, #f4f9ff, #fff);
}
.tc-news-feature .tag {
  display: inline-block;
  background: var(--tc-blue-l);
  color: var(--tc-blue);
  font-size: 12px;
  padding: 3px 10px;
  border-radius: 4px;
  margin-bottom: 14px;
}
.tc-news-feature h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--tc-text);
  margin-bottom: 12px;
  line-height: 1.5;
}
.tc-news-feature p {
  font-size: 14px;
  color: var(--tc-sub);
  line-height: 1.8;
  margin: 0;
}
.tc-news-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.tc-news-list li {
  border: 1px solid var(--tc-line);
  border-radius: var(--tc-radius);
  background: #fff;
  overflow: hidden;
  transition: .2s;
}
.tc-news-list li:hover {
  border-color: var(--tc-blue);
  box-shadow: var(--tc-shadow);
}
.tc-news-list a {
  display: flex;
  justify-content: space-between;
  align-items: center;
  text-decoration: none;
  color: var(--tc-text);
  gap: 14px;
  padding: 16px 18px;
}
.tc-news-list .tc-news-t {
  font-size: 15px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  transition: .2s;
}
.tc-news-list a:hover .tc-news-t {
  color: var(--tc-blue);
}
.tc-news-list .tc-news-d {
  flex: none;
  font-size: 13px;
  color: var(--tc-sub);
}

/* =====================================================================
   响应式
   ===================================================================== */
@media (max-width: 992px) {
  .tc-prod-panel { grid-template-columns: repeat(2, 1fr); }
  .tc-adv-grid,
  .tc-logo-wall { grid-template-columns: repeat(2, 1fr); }
  .tc-stats-grid { grid-template-columns: repeat(2, 1fr); gap: 24px 0; }
  .tc-news-grid { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .tc-section { padding: 40px 0; }
  .tc-sec-head { flex-direction: column; align-items: flex-start; gap: 14px; }
  .tc-prod-panel,
  .tc-adv-grid,
  .tc-logo-wall,
  .tc-stats-grid { grid-template-columns: 1fr; }
  /* 行业解决方案：手机端字号收紧（布局已在 992 断点改为纵向堆叠） */
  .tc-industry-head { padding: 0 0 26px; }
  .tc-industry-title { font-size: 22px; line-height: 30px; }
  .tc-industry-sub { margin-top: 12px; font-size: 14px; line-height: 22px; }
  .tc-logo-wall { grid-template-columns: repeat(2, 1fr); }
}

/* =====================================================================
   顶部导航栏三级下拉菜单（网站资讯 / 渠道合作 / 解决方案 / 更多）
   根因：原 common.css 仅定义 .third-menu{display:none}，缺少 hover 显示规则，
   导致这些下拉在所有页面（不止其它页面）都无法展开。统一在此补充 hover 显示。
   ===================================================================== */
.common-header.no-touch .nav .nav-item.spec,
.common-header.no-touch .nav .nav-item.nav-drop-down-wrap {
  position: relative;
}
/* 三级菜单 third-menu（网站资讯 / 渠道合作 / 解决方案 / 更多）*/
.common-header.no-touch .nav .nav-item.spec:hover .third-menu,
.common-header.no-touch .nav .nav-item.nav_item.qz.spec:hover .third-menu,
.common-header.no-touch .nav .nav-item.nav-drop-down-wrap:hover .third-menu,
.common-header.no-touch .nav .nav-item.spec:focus-within .third-menu,
.common-header.no-touch .nav .nav-item.open .third-menu {
  display: block !important;
}
/* 全部产品 / 更多 的容器支持点击 .open 展开（hover 之外的兜底）*/
.common-header.no-touch .nav .nav-item.nav-drop-down-wrap.open .nav-drop-down-container {
  display: block !important;
}

/* =====================================================================
   下拉面板补齐全样式（原 common.css 仅 display:none，显示后无布局/背景/文字样式，
   导致“乱码”裸列表）。统一用蓝色视觉令牌，作用于所有页面。
   ===================================================================== */
.common-header .nav .third-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  z-index: 1001;
  min-width: 200px;
  max-width: 320px;
  background: #fff;
  box-shadow: 0 10px 30px rgba(22,93,255,.12);
  border: 1px solid #eef1f6;
  border-radius: var(--radius, 10px);
  padding: 14px 18px;
  margin: 0;
  overflow: visible;
  box-sizing: border-box;
}
/* 中和 common.css 中 .nav_child 对“网站资讯”下拉的 top:70px/left:0 定位，
   使其与其它下拉一致地贴在导航项正下方 */
.common-header .nav .nav_child.third-menu {
  top: 100%;
  left: 0;
}
.common-header .nav .third-menu .three-menu {
  display: flex;
  align-items: center;
  padding-bottom: 10px;
  margin-bottom: 8px;
  border-bottom: 1px solid #eef1f6;
  font-size: 14px;
  font-weight: 700;
  color: var(--txtcl, #1d2129);
}
.common-header .nav .third-menu .three-menu .img-menu {
  width: 18px;
  height: 18px;
  margin-right: 6px;
  object-fit: contain;
}
.common-header .nav .third-menu ul { list-style: none; margin: 0; padding: 0; }
.common-header .nav .third-menu li.menu-li {
  height: auto;
  line-height: 1.6;
  margin: 2px 0;
  list-style: none;
}
.common-header .nav .third-menu li.menu-li a {
  display: block;
  padding: 7px 10px;
  font-size: 13px;
  color: #4d5260 !important;
  border-radius: 6px;
  text-decoration: none;
  white-space: nowrap;
  transition: background .2s ease, color .2s ease;
}
.common-header .nav .third-menu li.menu-li a:hover {
  background: #f2f8ff;
  color: var(--Original, #165DFF) !important;
}
/* 网站资讯双栏布局（left_nav_child + right_nav_child）*/
.common-header .nav .third-menu .left_nav_child,
.common-header .nav .third-menu .right_nav_child {
  display: inline-block;
  vertical-align: top;
  margin: 0;
  padding: 0;
}
.common-header .nav .third-menu .right_nav_child {
  border-left: 1px solid #eef1f6;
  margin-left: 16px;
  padding-left: 16px;
}
.common-header .nav .third-menu .left_nav_child ul,
.common-header .nav .third-menu .right_nav_child ul {
  margin: 0;
}
.common-header .nav .third-menu .left_nav_child li a,
.common-header .nav .third-menu .right_nav_child li a {
  display: block;
  padding: 6px 8px;
  font-size: 13px;
  color: #4d5260 !important;
  border-radius: 6px;
  text-decoration: none;
  white-space: nowrap;
  transition: background .2s ease, color .2s ease;
}
.common-header .nav .third-menu .left_nav_child li a:hover,
.common-header .nav .third-menu .right_nav_child li a:hover {
  background: #f2f8ff;
  color: var(--Original, #165DFF) !important;
}