* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Microsoft YaHei", Arial, sans-serif;
  background-color: #ffffff; /* 页面整体背景改为白色 */
  color: #333;
}

a {
  text-decoration: none;
  color: inherit;
}

ul {
  list-style: none;
}

/* 页面整体最大宽度 */
.container {
  width: 96%;          /* 小于1600时用 96% 宽度 */
  max-width: 1600px;   /* 最大不超过 1600 像素 */
  margin: 0 auto;
  padding: 0 20px;     /* 给小屏留出左右边距 */
}

/* 顶部导航区 */
.header {
  background-color: #ffffff;
  border-bottom: 1px solid #e5e5e5;
  position: relative; /* 作为移动端下拉菜单的定位容器 */
  z-index: 200;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 15px 20px !important; /* 上下15px，左右20px，与其他内容区保持一致 */
}

/* LOGO */
.logo {
  font-size: 24px;
  font-weight: bold;
  color: #0375be;
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo img {
  height: 50px; /* LOGO 略微放大 */
  max-width: 100%;
}

/* 右侧导航 + 热线 */
.nav-right {
  display: flex;
  align-items: center;
  gap: 40px; /* 导航与右侧电话的间距（加大一点） */
}

/* 顶部导航菜单（桌面端） */
.nav-menu {
  display: flex;
  gap: 36px; /* 一级导航栏目间距（加大一点） */
  font-size: 16px;
  align-items: center; /* 确保导航项垂直居中 */
}

.nav-menu > li {
  position: relative; /* 给二级菜单定位用 */
  display: flex;
  align-items: center; /* 确保链接文字垂直居中 */
  height: 100%; /* 让li占满header-inner的高度 */
}

/* 有二级菜单的项：不再添加padding-bottom，保持与其他项高度一致 */
.nav-menu > li.has-submenu {
  /* 移除padding-bottom，让所有一级栏目高度一致 */
}

/* 顶部一级导航项 */
.nav-menu li a {
  position: relative;
  display: inline-block;
  padding: 6px 0;
  line-height: 1;
  font-weight: 500;
  align-self: center; /* 确保a标签在li中垂直居中 */
  transition: color 0.2s, font-weight 0.2s;
}

/* 有二级菜单的项：加一个小下拉箭头 */
.nav-menu li.has-submenu > a {
  padding-right: 18px;
}
.nav-menu li.has-submenu > a::before {
  content: "";
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-30%);
  width: 0;
  height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 5px solid currentColor;
  opacity: 0.7;
}

/* 顶部导航：激活下划线条 */
.nav-menu > li::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 3px;
  bottom: -10px; /* 下划线略微下移 */
  background: transparent;
  border-radius: 999px;
  transition: background-color 0.2s, opacity 0.2s;
  pointer-events: none;
  opacity: 0;
}

/* 有二级菜单的项：下划线位置与其他项一致 */
.nav-menu > li.has-submenu::after {
  bottom: -10px; /* 与其他项完全一致 */
}

.nav-menu > li:hover::after,
.nav-menu > li:has(a.current)::after {
  opacity: 1;
  background: #7ad860; /* 菜单下划线颜色 */
}

.nav-menu li a:hover {
  font-weight: bold;
  color: #0375be;
}

.nav-menu li a:hover::after {
  background: #7ad860;
}

.nav-menu li a.current {
  font-weight: 600;
  color: #0375be;
}

.nav-menu li a.current::after {
  background: #7ad860;
}

/* 移动端菜单按钮（汉堡） */
.nav-toggle {
  display: none;
  width: 38px;
  height: 38px;
  margin-left: auto;
  border: 1px solid #e0e6ed;
  background: #ffffff;
  cursor: pointer;
  flex-shrink: 0;
  padding: 0;
  border-radius: 999px;
  flex-direction: column; /* 让三条横线垂直排列成三行 */
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
  transition: background-color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  margin: 3px auto;
  background-color: #0375be;
  border-radius: 999px;
  transition: transform 0.2s ease, opacity 0.2s ease, background-color 0.2s ease;
}

/* 菜单展开时的“X”图标效果 */
.nav-toggle.is-open {
  background-color: #0375be;
  border-color: #0375be;
  box-shadow: 0 4px 10px rgba(0, 115, 209, 0.3);
}

.nav-toggle.is-open span {
  background-color: #ffffff;
}

.nav-toggle.is-open span:nth-child(1) {
  transform: translateY(5px) rotate(45deg);
}
.nav-toggle.is-open span:nth-child(2) {
  opacity: 0;
}
.nav-toggle.is-open span:nth-child(3) {
  transform: translateY(-5px) rotate(-45deg);
}

/* 二级下拉菜单 */
.submenu {
  position: absolute;
  top: calc(100% + 12px); /* PC端：下移到一级下划线之下 */
  left: 0;          /* 紧贴当前一级菜单的左侧，在其正下方展开 */
  transform: none;
  min-width: 168px;
  background: #ffffff;
  border: 1px solid #eaeaea;
  border-radius: 10px;
  padding: 12px 0 8px 0; /* 顶部12px作为hover桥接区域，底部8px正常间距 */
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.10);
  display: none;
  z-index: 50;
}

/* 修复：下移后二级菜单与一级之间出现“空隙”，鼠标移过去会丢 hover
   用一个透明的桥接层把空隙填上，保证从一级到二级的移动不中断 */
.submenu::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: -12px;
  height: 12px;
  background: transparent;
}

.submenu li a {
  display: block;
  padding: 8px 16px 8px 26px; /* 左侧多 10px，整体略向右缩进 */
  font-size: 13px;            /* 比一级菜单稍微小一点 */
  line-height: 26px;
  color: #333;
  white-space: nowrap;
}

.submenu li a:hover {
  color: #0375be;
  font-weight: 600;
}

/* hover / 键盘 focus / 点击展开（JS 加 .open）都能打开二级菜单 */
.nav-menu li:hover > .submenu,
.nav-menu li:focus-within > .submenu,
.nav-menu li.open > .submenu {
  display: block;
}

/* 热线区域 */
.hotline {
  text-align: right;
  font-size: 16px;
  line-height: 1.4;
  color: #0375be; /* 咨询热线文字颜色 */
}

.hotline > div:first-child {
  display: flex;
  align-items: center;
  justify-content: flex-end; /* 保持右对齐 */
  gap: 6px;
}

.hotline .icon-phone {
  margin-right: 0;
  color: #0375be; /* 图标颜色 */
  font-size: 18px; /* 与“咨询热线”一样大 */
  display: inline-flex;
  align-items: center;
  line-height: 1;
}

.hotline .icon-phone svg {
  width: 1em;
  height: 1em;
  display: block;
  fill: currentColor; /* 跟随 .icon-phone 的 color */
}

.hotline .hotline-label {
  color: #0375be;
  font-size: 18px; /* 咨询热线更大 */
  font-weight: 700; /* 加粗 */
}

.hotline-number {
  font-size: 22px; /* 电话号码更大一点 */
  font-weight: bold;
  color: #000000; /* 电话号码为黑色 */
  margin-top: 2px;
}

/* ======================
   响应式：移动端导航
   ====================== */
@media (max-width: 960px) {
  .header-inner {
    padding: 10px 0 !important;
  }

  .logo img {
    height: 40px;
  }

  /* 显示汉堡按钮，隐藏右侧导航（初始） */
  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .nav-right {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: #ffffff;
    border-bottom: 1px solid #e5e5e5;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 10px 20px 12px;
    transform-origin: top;
    transform: scaleY(0.9);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.18s ease, transform 0.18s ease, visibility 0.18s ease;
    z-index: 100;
  }

  /* 展开状态 */
  .nav-right.is-open {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: scaleY(1);
  }

  /* 移动端：导航改为纵向列表 */
  .nav-menu {
    flex-direction: column;
    align-items: flex-start;
    width: 100%;
    gap: 2px;
  }

  .nav-menu > li {
    width: 100%;
    display: block; /* 移动端：让一级菜单纵向堆叠，二级自然在下方 */
  }

  .nav-menu li a {
    display: block;
    width: 100%;
    padding: 10px 0;
    line-height: 1.6;
  }

  /* 去掉桌面端的底部下划线 */
  .nav-menu > li::after {
    display: none;
  }

  /* 移动端：二级菜单改为内联展开，下推内容，并且样式与一级一致，宽度也为 100% */
  .submenu {
    position: static;   /* 不再悬浮，直接占据文档流，在一级菜单下方展开 */
    transform: none;
    border-radius: 0;
    box-shadow: none;
    border: none;
    padding: 0;         /* 与一级菜单完全对齐 */
    background: transparent;
    min-width: 0;       /* 不再限制最小宽度 */
    width: 100%;        /* 在移动端占满整行，和导航面板同宽 */
  }

  .submenu li a {
    display: block;
    width: 100%;              /* 二级菜单项与一级一样宽 */
    padding: 8px 0 8px 10px;  /* 向右缩进 10px，区分层级 */
    font-size: 14px;          /* 比一级小一点 */
  }

  /* 热线放在底部，左对齐 */
  .hotline {
    margin-top: 8px;
    text-align: left;
  }

  .hotline > div:first-child {
    justify-content: flex-start;
  }

  /* 移动端不再额外加背景，仅通过缩进与字号区分层级 */
}

/* 轮播图区 */
.banner {
  position: relative;
  overflow: hidden;
  width: 100%;
  background: #000;
}

.banner-inner {
  width: 100%;
  height: 100%;
}

.slide {
  position: relative;
  opacity: 1;
  display: none;
  width: 100%;
  overflow: hidden; /* 未激活/切换瞬间也不允许图片溢出容器 */
}

.slide.active {
  display: block;
}

/* 兜底：任何非激活 slide 都强制不显示 */
.slide:not(.active) {
  display: none;
}

.slide img {
  width: 100%;
  max-width: 100%;
  height: auto;
  display: block;
}

/* 轮播小圆点 */
.banner-dots {
  position: absolute;
  left: 50%;
  bottom: 20px;
  transform: translateX(-50%);
  display: flex;
  gap: 10px;
}

.banner-dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.5);
  cursor: pointer;
  transition: background 0.2s, transform 0.2s;
}

.banner-dots span.active {
  background: #ffffff;
  transform: scale(1.2);
}

/* 产品中心区标题条 */
.product-center-bar {
  background-color: #ffffff;
  margin: 40px 0 60px; /* 上边距40px，下边距60px */
}

.news-section {
  background-color: #fbfbfb;  /* fallback */
  /* 新闻动态区背景图：叠加一层浅色遮罩，保证文字与卡片可读性 */
  background-image:
    linear-gradient(rgba(251, 251, 251, 0.92), rgba(251, 251, 251, 0.92)),
    url("../img/news.jpg");
  background-repeat: no-repeat;
  background-position: center;
  background-size: cover;
  padding: 40px 0 60px;       /* 与产品中心区整体间距接近 */
}

/* 新闻动态标题条不需要底部分隔线（产品中心保留） */
.news-section .product-center-inner {
  border-bottom: none;
}

.product-center-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 0; /* 上下内边距20px，灰线更靠上 */
  border-bottom: 1px solid #e0e0e0; /* 底部灰色线仅限内容区 */
}

.product-center-title {
  line-height: 1.4;
}

.product-center-title .en {
  display: block;
  font-size: 22px;
  font-weight: 800;
  color: #0375be; /* 英文PRODUCTS 0375be色，加粗 */
  letter-spacing: 1px;
}

.product-center-title .zh {
  display: block;
  margin-top: 0;
  font-size: 24px;       /* 中文标题更大一点 */
  font-weight: 700;
  color: #000000; /* 中文产品中心 黑色加粗 */
}

.product-center-more {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 22px;
  background-color: #0375be; /* 背景方框0375be色 */
  color: #ffffff;
  font-size: 14px;
  font-weight: 600;
  border-radius: 0;
  overflow: hidden;
}

.product-category-nav {
  display: flex;
  gap: 48px;              /* 栏目之间间距略加宽 */
  padding-top: 4px;       /* 与灰线距离很小，更紧凑 */
}

.product-category-nav a {
  position: relative;
  padding: 14px 6px 6px;  /* 上下保持原有距离，左右略微加宽 */
  font-size: 18px;        /* 字体稍大一点 */
  font-weight: 400;        /* 去掉加粗，使用正常字重 */
  color: #000000;          /* 默认黑色文字 */
  white-space: nowrap;
  transition: color 0.2s ease;
}

/* 顶部 2px 绿色线条，位置与灰线基本重合 */
.product-category-nav a::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: -4px;               /* 再向上 2px，使其略高于 .product-center-inner 的灰线 */
  height: 2px;
  background-color: transparent;
  transition: background-color 0.2s ease;
}
/* ======================
   新闻动态区（三卡片切换）
   ====================== */
.news-cards {
  display: flex;
  gap: 16px;
  margin-top: 26px;
}

.news-card {
  position: relative; /* 为文字覆层提供定位上下文 */
  display: flex;
  flex-direction: column;
  background-color: #ffffff;
  cursor: pointer;
  overflow: hidden;
  border-radius: 4px;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.06);
  transition: all 0.3s ease;
  /* 默认：非激活，宽度为可用区的 1/4（剩余 1/2 给激活项） */
  flex: 0 0 25%;
}

.news-card.is-active {
  /* 激活卡片占 50% 宽 */
  flex: 0 0 50%;
}

.news-card-image {
  width: 100%;
  overflow: hidden;
}

.news-card.is-active .news-card-image {
  border-radius: 4px;
  overflow: hidden;
}

.news-card-image img {
  width: 100%;
  height: auto;       /* 按比例显示全图 */
  display: block;
  /* 用真实 img 显示，避免背景图 cover 裁切；高度由图片自然撑开 */
  transition: transform 0.3s ease;
}

/* 未激活卡片：图片在描述与“了解更多”之间，四周留白 */
.news-card:not(.is-active) .news-card-image {
  width: auto;              /* 避免 width:100% + 左右 margin 溢出导致右侧留白被裁切 */
  margin: 16px 20px 12px;  /* 上下边距加大一点，整体更舒展 */
  border-radius: 4px;
  overflow: hidden;        /* 保证圆角生效 */
}

.news-card-content {
  padding: 16px 18px 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

/* “了解更多”现在是 .news-card 的直接子元素（不在 content 内） */
.news-card-more {
  margin-top: 4px;
  font-size: 14px;
  color: #0375be;
  padding: 0 18px 18px;
}

/* 激活卡片：底部渐变遮罩（不影响卡片高度），文字覆盖在图片下方区域 */
.news-card.is-active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 58%;
  background: linear-gradient(
    to top,
    rgba(0, 0, 0, 0.68),
    rgba(0, 0, 0, 0.35),
    rgba(0, 0, 0, 0.0)
  );
  pointer-events: none;
  z-index: 1;
}

.news-card.is-active .news-card-content {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 132px; /* 绿色方框高 56px、bottom 46px => 顶部 102px；这里设 132px，留 30px 间距 */
  padding: 50px 50px 0; /* 激活文字区加边距 50px */
  color: #ffffff;
  z-index: 2;
}

.news-card.is-active .news-card-more {
  position: absolute;
  left: 50px;   /* 与文字区域左侧 50px 内边距对齐 */
  bottom: 46px; /* 向上移动 30 像素 */
  width: 56px;
  height: 56px;
  padding: 0;
  background-color: #7ad860; /* 激活态绿色方块 */
  border-radius: 0;         /* 方块不要圆角 */
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-size: 0;              /* 隐藏文字，用图形替代 */
  z-index: 2;
}

/* 激活态：绿色方块内的白色圆 */
.news-card.is-active .news-card-more::before {
  content: "";
  display: block;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background-color: transparent;   /* 圆内无背景 */
  border: 2px solid #ffffff;       /* 圆为白色边线 */
  box-sizing: border-box;
}

/* 激活态：白色圆内的箭头（使用边框画箭头） */
.news-card.is-active .news-card-more::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 12px;
  height: 12px;
  border-top: 2px solid #ffffff;   /* 白色箭头 */
  border-right: 2px solid #ffffff; /* 白色箭头 */
  transform: translate(-50%, -50%) rotate(45deg); /* 右箭头 */
}

.news-card.is-active .news-card-date,
.news-card.is-active .news-card-title,
.news-card.is-active .news-card-desc,
.news-card.is-active .news-card-more {
  color: #ffffff;
}

.news-card.is-active .news-card-title {
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.55);
}

.news-card-date-badge {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 62px;
  height: 62px;
  border: 1px solid #ffffff; /* 正方形白色 1px 方框 */
  color: #ffffff;
  display: none;             /* 默认隐藏，仅激活态显示 */
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  z-index: 3;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.55);
}

.news-card.is-active .news-card-date-badge {
  top: 50px;    /* 日期框向下 30px（原 top:20px） */
  right: 50px;  /* 与标题/描述区（padding-right:50px）右侧对齐 */
  display: flex;
}

/* 激活态：隐藏原本在 content 里的日期，避免重复显示 */
.news-card.is-active .news-card-date {
  display: none;
}

.news-card-date-day {
  display: block;
  font-size: 22px;   /* 第一行更大：日 */
  line-height: 1.05;
  font-weight: 400;  /* 不加粗 */
}

.news-card-date-ym {
  display: block;
  margin-top: 4px;
  font-size: 13px;   /* 第二行：年.月 */
  line-height: 1.05;
  font-weight: 400;  /* 不加粗 */
}

.news-card-date {
  font-size: 13px;
  color: #999999;
}

.news-card-title {
  font-size: 16px;
  font-weight: 600;
  color: #333333;
}

.news-card-desc {
  font-size: 14px;
  color: #666666;
  line-height: 1.8;
  max-height: 4.5em; /* 默认只显示约2.5行，多余省略 */
  overflow: hidden;
}

.news-card:hover .news-card-image img {
  transform: scale(1.03);
}

/* 非激活卡片：文字和描述更紧凑，模拟“收起”效果 */
.news-card:not(.is-active) .news-card-content {
  padding: 20px;
}

.news-card:not(.is-active) .news-card-title {
  font-size: 17px;
  display: block;
  white-space: nowrap;       /* 标题只显示一行 */
  overflow: hidden;
  text-overflow: ellipsis;   /* 超出截断 */
  margin-bottom: 10px;       /* 标题和描述之间加间距 */
}

.news-card:not(.is-active) .news-card-desc {
  /* 保障 2 行显示完整（不出现 1.5 行被截断） */
  max-height: none;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  overflow: hidden;
  min-height: calc(1.8em * 2);
  margin-top: 0;
}

/* 非激活卡片：更多链接与内容对齐 */
.news-card:not(.is-active) .news-card-more {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 10px;          /* “了解更多”向下一点 */
  padding: 0 20px 24px 20px;
  white-space: nowrap;       /* 了解更多和箭头保持一行 */
  overflow: hidden;
  text-overflow: ellipsis;   /* 过窄时文字省略，不换行 */
}

.news-card:not(.is-active) .news-card-more::after {
  content: "→";
  position: static;
  transform: none;
  flex: 0 0 auto;
  font-size: 16px;
  color: currentColor;
}

@media (max-width: 960px) {
  .news-cards {
    flex-direction: column;
  }

  .news-card,
  .news-card.is-active {
    flex: 0 0 auto;
    width: 100%;
  }

  /* 移动端激活卡片样式保持特殊效果 */
  .news-card.is-active {
    min-height: 320px;
    position: relative;
  }

  .news-card.is-active .news-card-image {
    width: 100%;
    margin: 0;
    border-radius: 0;
  }

  .news-card.is-active::after {
    height: 50%;
    background: linear-gradient(
      to top,
      rgba(0, 0, 0, 0.7),
      rgba(0, 0, 0, 0.3),
      rgba(0, 0, 0, 0.0)
    );
  }

  .news-card.is-active .news-card-content {
    position: absolute;
    left: 16px;
    right: 16px;
    bottom: 70px;
    padding: 0;
    color: #ffffff;
    z-index: 2;
  }

  .news-card.is-active .news-card-date {
    display: none;
  }

  .news-card.is-active .news-card-title {
    color: #ffffff;
    font-size: 16px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
    white-space: nowrap;
  }

  .news-card.is-active .news-card-desc {
    color: rgba(255, 255, 255, 0.9);
    font-size: 13px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  .news-card.is-active .news-card-date-badge {
    display: flex;
    top: 16px;
    right: 16px;
  }

  .news-card.is-active .news-card-more {
    position: absolute;
    left: 16px;
    bottom: 16px;
    width: 48px;
    height: 48px;
    padding: 0;
    background-color: #7ad860;
    border-radius: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    font-size: 0;
    z-index: 2;
  }

  .news-card.is-active .news-card-more::before {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: 2px solid #ffffff;
    box-sizing: border-box;
  }

  .news-card.is-active .news-card-more::after {
    content: "";
    position: absolute;
    left: 50%;
    top: 50%;
    width: 10px;
    height: 10px;
    border-top: 2px solid #ffffff;
    border-right: 2px solid #ffffff;
    transform: translate(-50%, -50%) rotate(45deg);
  }

  /* 未激活卡片保持原有简洁样式 */
  .news-card:not(.is-active) .news-card-image {
    width: auto;
    margin: 16px 20px 12px;
    border-radius: 4px;
  }

  .news-card:not(.is-active) .news-card-content {
    padding: 16px 18px 18px;
  }

  .news-card:not(.is-active) .news-card-title {
    font-size: 15px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  .news-card:not(.is-active) .news-card-desc {
    font-size: 13px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  .news-card:not(.is-active) .news-card-more {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 10px;
    padding: 0 20px 20px;
    font-size: 13px;
    color: #0375be;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .news-card:not(.is-active) .news-card-more::after {
    content: "→";
    position: static;
    transform: none;
    flex: 0 0 auto;
    font-size: 14px;
    color: currentColor;
  }

  /* 移动端新闻区容器宽度与产品中心一致 */
  .news-section .container {
    width: 100%;
    max-width: none;
    padding: 0 20px;
  }

  /* 移动端新闻区标题行与产品中心一样不换行 */
  .news-section .product-center-inner {
    flex-wrap: nowrap;
    gap: 10px;
  }

  .news-section .product-center-title {
    flex-shrink: 0;
    white-space: nowrap;
  }

  .news-section .product-center-title .en,
  .news-section .product-center-title .zh {
    white-space: nowrap;
  }

  .news-section .product-center-title .en {
    font-size: 16px;
  }

  .news-section .product-center-title .zh {
    font-size: 18px;
  }

  /* 移动端新闻区查看更多方框与产品中心一样宽 */
  .news-section .product-center-more {
    padding: 8px 18px;
    font-size: 13px;
    white-space: nowrap;
    flex-shrink: 0;
  }
}

.product-category-nav a:hover {
  color: #7ad860;          /* 悬停 / 选中时文字 7ad860 */
}

.product-category-nav a:hover::before {
  background-color: #7ad860; /* 顶部 2px 绿色线条 */
}

.product-center-more .plus {
  font-size: 16px;
}

/* 方框内左上、右下绿色小三角 */
.product-center-more .corner {
  position: absolute;
  width: 0;
  height: 0;
}

.product-center-more .corner-tl {
  top: 0;
  left: 0;
  border-top: 16px solid #7ad860;
  border-right: 16px solid transparent;
  border-left: 0;
  border-bottom: 0;
}

.product-center-more .corner-br {
  bottom: 0;
  right: 0;
  border-bottom: 16px solid #7ad860;
  border-left: 16px solid transparent;
  border-right: 0;
  border-top: 0;
}

@media (max-width: 960px) {
  .product-center-inner {
    padding: 8px 0; /* 移动端整体更紧凑，减小灰线以上间距 */
  }

  .product-center-title .en {
    font-size: 20px;
  }

  .product-center-title .zh {
    font-size: 20px;     /* 移动端中文标题也略微变大 */
  }

  .product-center-more {
    padding: 8px 18px;
    font-size: 13px;
  }

  .product-category-nav {
    flex-wrap: wrap;
    gap: 24px;             /* 移动端间距也略微放宽 */
    padding-top: 2px;
  }

  .product-category-nav a {
    padding: 10px 4px 4px;
    font-size: 15px;       /* 移动端也略大一点，但仍保持紧凑 */
  }
}

/* 示例内容区（可自行扩展） */
.content {
  padding: 40px 20px 60px;
  background-color: #ffffff;
  margin-top: 10px;
  min-height: 400px;
}

.content h1 {
  font-size: 28px;
  margin-bottom: 15px;
}

.content p {
  line-height: 1.8;
  color: #555;
}

/* ======================
   产品列表滚动区
   每屏显示 2 行 * 4 个产品
   ====================== */
.product-list-section {
  padding: 40px 0 60px;     /* 左右无边距，产品区铺满 */
  margin-top: -50px;        /* 整体向上移动 50px */
  background-color: #ffffff;/* 保持白色背景 */
}

.product-list-slider {
  position: relative;
  display: flex;
  align-items: center;
  gap: 16px;
}

.product-list-viewport {
  overflow: hidden;
  flex: 1;
}

.product-list-track {
  display: flex;
  transition: transform 0.4s ease;
  will-change: transform;
}

.product-list-page {
  flex: 0 0 100%;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  grid-auto-rows: 1fr;
  gap: 20px 24px;
  padding: 0;              /* 产品区内容区不加内边距 */
}

.product-item {
  border: none;
  border-radius: 0;           /* 卡片无圆角 */
  padding: 0;                 /* 产品卡片不加内边距 */
  background-color: #0375be;  /* 默认背景 0375be */
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  color: #ffffff;             /* 卡片内文字为白色 */
  transition: box-shadow 0.2s ease, transform 0.2s ease, background-color 0.2s ease;
}

.product-item:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
  background-color: #7ad860;  /* 悬停背景 7ad860 */
}

.product-thumb {
  width: 100%;
  padding-top: 0;             /* 取消固定比例，占满宽度即可 */
  position: relative;
  overflow: hidden;
  border-radius: 0;           /* 图片容器无圆角 */
  background-color: #0375be;
  margin-bottom: 8px;
}

.product-thumb img {
  position: static;
  display: block;
  width: 100%;        /* 图片宽度100%，占满卡片 */
  height: auto;       /* 高度自适应，保持比例 */
}

.product-name {
  font-size: 16px;
  color: #ffffff;      /* 产品名称白色 */
  height: auto;        /* 高度自动，由内容撑开 */
  margin: 0;           /* 外边距 0 */
  padding: 5px 0 13px 0;  /* 内上 5px，下 13px，左右 0 */
}

.product-list-nav {
  /* 隐藏上一组 / 下一组按钮，仅保留自动轮播 */
  display: none;
}

.product-list-nav:hover:not(:disabled) {
  background-color: #0375be;
  color: #ffffff;
  border-color: #0375be;
  box-shadow: 0 4px 10px rgba(3, 117, 190, 0.35);
  transform: translateY(-1px);
}

.product-list-nav:disabled {
  opacity: 0.4;
  cursor: default;
  box-shadow: none;
}

@media (max-width: 960px) {
  /* 移动端：产品内容区宽度与导航区一致（铺满并保留左右 20px 内边距） */
  .product-list-section .container {
    width: 100%;
    max-width: none;
    padding: 0 20px;
  }

  .product-list-slider {
    gap: 8px;
  }

  .product-list-page {
    grid-template-columns: repeat(2, minmax(0, 1fr)); /* 移动端每行 2 个，更易于查看 */
    gap: 14px 16px;
  }

  .product-item {
    padding: 0;      /* 移动端同样不加内边距 */
  }

  .product-name {
    font-size: 13px;
  }
}

/* ======================
   公司简介区
   ====================== */
.about-section {
  position: relative;
  min-height: 600px;
  padding: 0;
  overflow: hidden;
}

.about-bg {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  z-index: 1;
}

.about-content {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: flex-start;
  gap: 60px;
  padding-bottom: 0;
}

.about-content .container {
  flex: 0 0 40%;
  width: 40%;
  margin-left: 2%;
  padding: 0 20px;
  display: flex;
  align-items: flex-start;
}

/* 当页面宽度大于1667px时，确保左侧容器与产品中心对齐 */
@media (min-width: 1667px) {
  .about-content .container {
    margin-left: calc((100% - 1600px) / 2);
  }
}

.about-text {
  flex: 1;
  position: relative;
  padding: 0;
  margin-top: 60px;
}

.about-title {
  margin-bottom: 30px;
}

.about-title-en {
  display: block;
  font-size: 22px;
  font-weight: 800;
  color: #0375be; /* 与产品中心英文标题一致 */
  letter-spacing: 1px;
  margin-bottom: 8px;
}

.about-title-zh {
  display: block;
  font-size: 24px;
  font-weight: 700;
  color: #000000; /* 与产品中心中文标题一致 */
}

.about-description {
  margin-bottom: 40px;
  line-height: 1.8;
  color: #333;
}

.about-description p {
  margin-bottom: 20px;
  font-size: 16px;
  line-height: 1.8;
}

.about-more-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin-left: 0;
  padding: 10px 22px;
  background-color: #0375be; /* 与产品中心“查看更多”一致 */
  color: #ffffff;
  font-size: 14px;
  font-weight: 600;
  border: none;
  border-radius: 0;
  transition: background-color 0.2s ease;
  position: relative;
  overflow: hidden;
}

.about-more-btn:hover {
  background-color: #0375be;
}

.about-more-btn .plus {
  font-size: 16px;
}

/* 方框内左上、右下绿色小三角（与产品中心一致） */
.about-more-btn .corner {
  position: absolute;
  width: 0;
  height: 0;
}

.about-more-btn .corner-tl {
  top: 0;
  left: 0;
  border-top: 16px solid #7ad860;
  border-right: 16px solid transparent;
  border-left: 0;
  border-bottom: 0;
}

.about-more-btn .corner-br {
  bottom: 0;
  right: 0;
  border-bottom: 16px solid #7ad860;
  border-left: 16px solid transparent;
  border-right: 0;
  border-top: 0;
}

.about-image {
  position: relative;
  z-index: 2;
  flex: 1;
  min-width: 0;
}

.about-image img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 0;
}

/* 底部统计数据条 */
.about-stats {
  position: relative;
  z-index: 2;
  background-color: #0375be;
  padding: 40px 0;
  margin-top: 0;
}

.stats-list {
  display: flex;
  align-items: center;
  justify-content: space-around;
  gap: 20px;
}

.stat-item {
  flex: 1;
  text-align: center;
  color: #ffffff;
}

.stat-number {
  font-size: 32px;
  font-weight: 800;
  margin-bottom: 8px;
  line-height: 1.2;
}

.stat-suffix {
  font-size: 0.6em;
  vertical-align: super;
  font-weight: 600;
}

.stat-label {
  font-size: 16px;
  font-weight: 400;
  opacity: 0.95;
}

.stat-divider {
  width: 1px;
  height: 60px;
  background-color: rgba(255, 255, 255, 0.3);
  flex-shrink: 0;
}

@media (max-width: 960px) {
  .about-section {
    padding: 0;
    min-height: auto;
  }

  .about-content {
    flex-direction: column;
    gap: 30px;
    padding-bottom: 0;
  }

  .about-content .container {
    flex-direction: column;
    width: 100%;
    max-width: none;
    padding: 0 20px;
  }
  
  .about-image {
    flex: none;
    width: 100%;
  }

  .about-text {
    padding: 0;
  }

  .about-image {
    width: 100%;
    margin-left: 0;
  }

  .about-title-en {
    font-size: 20px;
  }

  .about-title-zh {
    font-size: 20px;
  }

  .about-description p {
    font-size: 14px;
  }

  .about-more-btn {
    padding: 8px 18px;
    font-size: 13px;
    margin-left: 0;
  }

  .about-stats {
    padding: 30px 0;
  }

  .stats-list {
    flex-wrap: wrap;
    gap: 15px;
  }

  .stat-item {
    flex: 0 0 calc(50% - 10px);
  }

  .stat-divider {
    display: none;
  }

  .stat-number {
    font-size: 24px;
  }

  .stat-label {
    font-size: 14px;
  }
}

/* ======================
   优势区 WHY CHOOSE US
   ====================== */
.advantages-section {
  padding: 60px 0 60px;
  background-color: #ffffff; /* 优势区整体白色背景 */
}

.advantages-header {
  margin-bottom: 46px;  /* 原36px基础上增加10px，与下方卡片间距更大 */
  text-align: center; /* 标题居中 */
}

.advantages-title-en {
  display: block;
  font-size: 22px;
  font-weight: 800;
  color: #0375be;
  letter-spacing: 1px;
}

.advantages-title-zh {
  display: block;
  margin-top: 4px;
  font-size: 24px;
  font-weight: 700;
  color: #000000;
}

.advantages-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.advantage-item {
  position: relative;
  background: none;       /* 不要背景 */
  border: none;           /* 不要边框 */
  overflow: hidden;
}

.advantage-img {
  position: relative;
  overflow: hidden;
}

.advantage-img img {
  display: block;
  width: 100%;
  height: auto;           /* 高度自适应 */
  object-fit: cover;      /* 图片铺满卡片 */
  transition: transform 0.4s ease;   /* 悬停图片轻微缩放 */
}

/* 覆盖层：用于居中文本 + 悬停绿色遮罩 */
.advantage-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;              /* 文本水平居中 */
  color: #ffffff;
  padding: 20px;
  box-sizing: border-box;
  background-color: rgba(0, 0, 0, 0.15); /* 默认略微压暗，突出白字 */
  transition: background-color 0.25s ease;
}

.advantage-text {
  max-width: 90%;
  width: 100%;                     /* 不管文字多少行都按整块来居中 */
  display: flex;
  flex-direction: column;
  align-items: center;             /* 水平方向居中 */
  justify-content: center;         /* 垂直方向居中 */
  text-align: center;
}

.advantage-title-main {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 1px;
  margin-bottom: 8px;
  text-shadow: 0 2px 6px rgba(0, 0, 0, 0.55);
  transition: opacity 0.3s ease, transform 0.3s ease;
  transform: translateY(12px);       /* 默认整体再往下挪一点，解决偏上的感觉 */
}

.advantage-title-sub {
  font-size: 22px;              /* 悬停说明文字字号与原来标题相同 */
  line-height: 1.6;             /* 行距略微收紧，整体不要太“拖”下面 */
  opacity: 0;                   /* 默认透明不可见 */
  transform: translateY(10px);  /* 初始稍微偏下一点，悬停时上移到视觉中线附近 */
  visibility: hidden;           /* 避免点击到隐藏元素 */
  transition: opacity 0.35s ease, transform 0.35s ease;
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.45);
}

/* 悬停：绿色遮罩 #7ad860，透明度 70%，显示详细说明 */
.advantage-item:hover .advantage-overlay {
  background-color: rgba(122, 216, 96, 0.7);
}

.advantage-item:hover .advantage-title-sub {
  opacity: 1;                   /* 渐显 */
  transform: translateY(-8px);  /* 悬停时再往上挪更多，解决“偏下”的感觉 */
  visibility: visible;
}

.advantage-item:hover .advantage-title-main {
  opacity: 0;                   /* 渐隐大标题，而不是瞬间消失 */
  transform: translateY(-6px);
}

.advantage-item:hover .advantage-img img {
  transform: scale(1.05);       /* 悬停时图片轻微放大 */
}

@media (max-width: 960px) {
  .advantages-section {
    padding: 40px 0 40px;
  }

  /* 移动端：优势区内容宽度与产品中心一致（左右 20px 内边距，铺满） */
  .advantages-section .container {
    width: 100%;
    max-width: none;
    padding: 0 20px;
  }

  .advantages-list {
    grid-template-columns: 1fr;
    gap: 10px;           /* 缩小卡片之间的间距 */
  }

  .advantage-item {
    padding: 10px 8px;   /* 缩小卡片内边距，让整体更紧凑 */
  }

  .advantages-title-en,
  .advantages-title-zh {
    font-size: 20px;
  }
}

/* ======================
   应用领域区
   ====================== */
.field-section {
  position: relative;
  padding: 70px 0 80px;
  background-color: #ffffff; /* 应用领域整体背景改为白色 */
  color: #333333;
  overflow: hidden;
}

.field-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  z-index: 1;
}

.field-overlay {
  position: relative;
  z-index: 2;
}

.field-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 30px;
}

.field-title-en {
  display: block;
  font-size: 22px;
  font-weight: 800;
  color: #7ad860;  /* 英文标题 7ad860 */
  letter-spacing: 1px;
}

.field-title-zh {
  display: block;
  font-size: 24px;
  font-weight: 700;
  color: #ffffff;  /* 中文标题白色 */
}

.field-more-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 22px;
  background-color: #ffffff;  /* 按钮背景白色 */
  color: #0375be;             /* “查看更多”文字 0375be */
  font-size: 14px;
  font-weight: 600;
  border: 1px solid #0375be;  /* 加一圈描边，视觉更清晰 */
  border-radius: 0;
  overflow: hidden;
}

.field-more-btn .plus {
  font-size: 16px;
}

.field-more-btn .corner {
  position: absolute;
  width: 0;
  height: 0;
}

.field-more-btn .corner-tl {
  top: 0;
  left: 0;
  border-top: 16px solid #7ad860;
  border-right: 16px solid transparent;
}

.field-more-btn .corner-br {
  bottom: 0;
  right: 0;
  border-bottom: 16px solid #7ad860;
  border-left: 16px solid transparent;
}

.field-layout {
  display: flex;
  align-items: stretch; /* 左右总高度保持一致 */
  gap: 0; /* 左右区不留间距 */
}

.field-main {
  position: relative;
  flex: 1.4;
  min-width: 0;
}

.field-photo {
  position: relative;
  width: 100%;
  height: auto;          /* 高度按图片比例自适应 */
  overflow: hidden;      /* 保留：用于承载底部渐变文案叠层视觉（不裁图本体） */
}

.field-photo img {
  width: 100%;
  height: auto;          /* 按比例显示全图 */
  max-width: 100%;
  display: block;
}

.field-desc {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 18px 26px 22px;
  background: linear-gradient(to top, rgba(0, 67, 126, 0.95), rgba(0, 67, 126, 0.7), transparent);
  color: #ffffff;
}

.field-desc-title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 8px;
}

.field-desc-text {
  font-size: 14px;
  line-height: 1.9;
}

.field-tabs {
  flex: 0 0 340px;
  display: flex;
  flex-direction: column;
}

.field-tab {
  flex: 1; /* 在右侧列中等比分配高度 */
  display: flex;
  align-items: center;            /* 默认纵向居中 */
  justify-content: center;        /* 默认横向居中 */
  gap: 16px;
  padding: 18px 20px;
  position: relative;             /* 为右侧绝对定位图标提供参照 */
  background-color: rgba(255, 255, 255, 0.9);
  border: none;
  cursor: pointer;
  text-align: left;
  transform-origin: right center; /* 以右侧为基准进行缩放/位移 */
  transition: background-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.field-tab + .field-tab {
  margin-top: 0; /* 右侧条目之间不留间距 */
}

.field-tab-text {
  display: flex;
  flex-direction: column;
  gap: 4px;
  align-items: center;   /* 标题默认居中 */
  text-align: center;
}

/* 悬停 / 激活时：标题改为左对齐 */
.field-tab.active .field-tab-text,
.field-tab:hover .field-tab-text,
.field-tab:focus-visible .field-tab-text {
  align-items: flex-start;
  text-align: left;
}

.field-tab-zh {
  font-size: 18px;   /* 右侧中文标题稍大（桌面端） */
  font-weight: 600;
  color: #000000;
}

.field-tab-en {
  display: none;              /* 默认：不显示英文行 */
  font-size: 14px;            /* 英文副标题也放大一点 */
  color: #666666;
}

.field-tab-icon {
  display: none;              /* 默认：不显示图标 */
  position: absolute;         /* 绝对定位到右侧，不挤占文字空间 */
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
}

.field-tab-icon img {
  width: 72px;   /* 右侧图标再放大一些（桌面端） */
  height: 72px;
  display: block;
}

.field-tab.active,
.field-tab:hover,
.field-tab:focus-visible {
  background-color: #0375be;
  color: #ffffff;
  justify-content: flex-start;    /* 悬停/激活时：整体内容靠左 */
  align-items: center;            /* 但在格子内保持上下居中 */
  transform: scaleX(1.1);         /* 以右侧为基准水平放大，让左侧“延伸” */
}

.field-tab.active .field-tab-zh,
.field-tab:hover .field-tab-zh,
.field-tab:focus-visible .field-tab-zh {
  color: #ffffff;
}

.field-tab.active .field-tab-en,
.field-tab:hover .field-tab-en,
.field-tab:focus-visible .field-tab-en {
  display: block;                  /* 激活/悬停时显示英文 */
  color: rgba(255, 255, 255, 0.85);
}

.field-tab.active .field-tab-icon,
.field-tab:hover .field-tab-icon,
.field-tab:focus-visible .field-tab-icon {
  display: block;                  /* 激活/悬停时显示图标 */
}

.field-tab:focus-visible {
  outline: 2px solid rgba(3, 117, 190, 0.7);
  outline-offset: 2px;
}

@media (max-width: 960px) {
  .field-section {
    padding: 40px 0 50px;
  }

  /* 移动端：应用领域标题字号与产品中心一致 */
  .field-title-en {
    font-size: 20px;
  }

  .field-title-zh {
    font-size: 20px;
  }

  /* 移动端：应用领域区内容宽度与其它区一致（左右 20px 内边距，铺满） */
  .field-section .container {
    width: 100%;
    max-width: none;
    padding: 0 20px;
  }

  /* 移动端：标题与“查看更多”同一行，按钮靠右且不换行 */
  .field-header {
    flex-direction: row;          /* 仍然左右排列 */
    align-items: center;
    gap: 10px;
  }

  .field-title,
  .field-more-btn {
    white-space: nowrap;          /* 文本不换行 */
  }

  .field-layout {
  flex-direction: column;      /* 移动端：改为大图在上，六块在下 */
  gap: 16px;
}

  .field-main {
    width: 100%;
  }

  .field-photo {
    height: 300px;            /* 移动端应用领域大图高度 +50px（再加 50） */
  }

  .field-photo img {
    height: 100%;             /* 高度跟随容器填满 */
    object-fit: cover;        /* 裁切以保证不变形 */
  }

  .field-tabs {
    flex-direction: row;      /* 横向排列 */
    flex-wrap: wrap;          /* 允许换行，形成多行 */
    overflow-x: visible;      /* 不再横向滚动 */
    padding-bottom: 4px;
    gap: 0;                   /* 去掉块与块之间的间距 */
  }

  .field-tab {
    flex: 0 0 100%;           /* 一行 1 个，独占整行 */
    min-width: 0;              /* 允许根据父容器自适应 */
    padding: 0 12px;           /* 上下各减少 10px，总高度减 20px */
    height: 76px;              /* 在 56px 基础上再增加 20px 高度 */
    overflow: hidden;          /* 超出内容隐藏，避免撑高 */
    transform: none;           /* 移动端：默认不做水平放大，避免左侧“延伸” */
  }

  /* 移动端：悬停 / 激活时也不做水平放大，仅改变背景和文字 */
  .field-tab.active,
  .field-tab:hover,
  .field-tab:focus-visible {
    transform: none;
  }

  /* 移动端：应用领域六块文字更小、图标更小 */
  .field-tab-zh {
    font-size: 14px;
  }

  .field-tab-en {
    font-size: 12px;
  }

  .field-tab-icon img {
    width: 48px;
    height: 48px;
  }
}

/* ========== 页尾（Footer） ========== */
.site-footer {
  color: rgba(255, 255, 255, 0.92);
  background-image: url("../img/fo.png"); /* 资源包里现有的是 fo.png */
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.site-footer-main {
  position: relative;
}

/* 背景暗化遮罩，保证文字可读 */
.site-footer-main::before {
  content: none; /* 只在版权区加黑透背景，上面不加遮罩 */
}

.site-footer-inner {
  position: relative; /* 盖住遮罩 */
  z-index: 1;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 50px;
  padding: 56px 20px 34px !important;
}

.site-footer-cols {
  flex: 1 1 auto;
  display: grid;
  /* 前三列稍窄，"联系我们"列稍宽 */
  grid-template-columns:
    minmax(0, 0.9fr)
    minmax(0, 0.9fr)
    minmax(0, 0.9fr)
    minmax(0, 1.3fr);
  gap: 26px;
}

.footer-col-title {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.5px;
  margin-bottom: 22px; /* 标题与下方栏目间距加大 */
}

.footer-links li + li {
  margin-top: 8px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.88);
  font-size: 14px;
  transition: opacity 0.2s ease;
}

.footer-links a:hover,
.footer-links a:focus-visible {
  opacity: 1;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.footer-contact {
  font-size: 14px;
  line-height: 1.85;
  color: rgba(255, 255, 255, 0.88);
}

.footer-contact li + li {
  margin-top: 6px;
}

.footer-contact .k {
  display: inline-block;
  min-width: 48px;
  color: rgba(255, 255, 255, 0.78);
}

.footer-contact a {
  color: rgba(255, 255, 255, 0.92);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.site-footer-brand {
  flex: 0 0 260px;
  display: flex;
  flex-direction: column;
  align-items: flex-end; /* 右侧上 LOGO */
}

.footer-logo img {
  width: 200px;
  height: auto;
  display: block;
  /* 尽量把现有 logo.png 显示为白色效果（如有白色logo可直接替换图片） */
  filter: brightness(0) invert(1);
}

.footer-qrs {
  margin-top: 28px; /* LOGO 下方：拉开 LOGO 与二维码的间距 */
  display: flex;
  align-items: flex-start;
  justify-content: flex-end;
  gap: 32px;
}

.footer-qr {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.footer-qr-box {
  width: 128px;
  height: 128px;
  border: 1px solid rgba(255, 255, 255, 0.65);
  background: rgba(255, 255, 255, 0.08);
  overflow: hidden;
  border-radius: 6px;
}

.footer-qr-box img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}

.footer-qr-label {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.86);
  letter-spacing: 0.5px;
}

.site-footer-bottom {
  background: rgba(0, 0, 0, 0.35); /* 版权行：透明黑色背景（更透明） */
}

.site-footer-bottom-inner {
  padding: 12px 20px !important;
}

.footer-copy {
  text-align: center;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.9);
  line-height: 1.7;
}

/* 页脚底部版权条：链接样式保持一致，并在 hover 时提示可点击 */
.footer-copy a {
  color: inherit;
  text-decoration: none;
}
.footer-copy a:hover {
  text-decoration: underline;
}

/* ======================
   子页通用布局（栏目页 / 产品等）
   从各子页抽取
   ====================== */

/* 导航下通栏图片横幅 */
.subpage-hero {
  position: relative;
  width: 100%;
  min-height: 180px;
  max-height: 260px;
  overflow: hidden;
}

.subpage-hero img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  filter: brightness(0.9);
}

.subpage-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(0, 0, 0, 0.45) 0%, rgba(0, 0, 0, 0.15) 40%, transparent 100%);
  display: flex;
  align-items: center;
}

.subpage-hero-content {
  max-width: 1600px;
  margin: 0 auto;
  padding: 0 20px;
  color: #fff;
}

.subpage-hero-title {
  font-size: 32px;
  font-weight: 600;
  margin-bottom: 0;
}

.subpage-hero-subtitle {
  font-size: 16px;
  opacity: 0.95;
}

/* 页面内容区样式 */
.page-wrapper {
  min-height: calc(100vh - 200px);
  padding: 40px 0;
  background: linear-gradient(135deg, #fafbff 0%, #e4ecf8 100%);
}

.page-container {
  display: flex;
  gap: 30px;
  max-width: 1600px;
  margin: 0 auto;
  padding: 0 20px;
}

/* 左侧栏目 / 分类列表 */
.category-sidebar {
  width: 280px;
  flex-shrink: 0;
  background: #ffffff;
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  padding: 30px 0;
  height: fit-content;
  position: sticky;
  top: 100px;
}

.category-sidebar-title {
  font-size: 20px;
  font-weight: bold;
  color: #333;
  padding: 0 25px 20px;
  border-bottom: 2px solid #0375be;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.category-toggle {
  display: none; /* PC端默认隐藏 */
  background: none;
  border: none;
  cursor: pointer;
  padding: 5px 10px;
  color: #0375be;
  font-size: 16px;
  transition: transform 0.3s ease;
}

.category-toggle .toggle-icon {
  display: inline-block;
  transition: transform 0.3s ease;
}

.category-sidebar.is-collapsed .category-toggle .toggle-icon {
  transform: rotate(-90deg);
}

/* 收起状态下减少空白 */
.category-sidebar.is-collapsed {
  padding-bottom: 15px; /* 减少底部空白 */
}

.category-sidebar.is-collapsed .category-sidebar-title {
  margin-bottom: 0; /* 收起时标题下方不需要空白 */
}

.category-list {
  list-style: none;
  padding: 0;
}

.category-item {
  margin: 0;
}

.category-item a {
  display: flex;
  align-items: center;
  padding: 15px 25px;
  color: #666;
  font-size: 15px;
  transition: all 0.3s ease;
  border-left: 3px solid transparent;
  position: relative;
}

.category-item a:hover,
.category-item a.active {
  background: linear-gradient(90deg, rgba(0, 115, 209, 0.1) 0%, transparent 100%);
  color: #0375be;
  border-left-color: #0375be;
  padding-left: 30px;
}

.category-item a::before {
  content: '';
  width: 6px;
  height: 6px;
  background: #0375be;
  border-radius: 50%;
  margin-right: 12px;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.category-item a:hover::before,
.category-item a.active::before {
  opacity: 1;
}

/* 右侧内容区 */
.content-main {
  flex: 1;
  min-width: 0;
}

.content-header {
  background: #ffffff;
  border-radius: 12px;
  padding: 30px 40px;
  margin-bottom: 30px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.content-header--breadcrumb-only {
  padding: 16px 22px;
  margin-bottom: 14px;
}

.content-header h1 {
  font-size: 32px;
  color: #333;
  margin-bottom: 10px;
  font-weight: 600;
}

.content-page-title {
  font-size: 28px;
  color: #333;
  margin: 0 0 18px;
  font-weight: 600;
}

.content-breadcrumb .breadcrumb-label {
  color: #666;
  margin-right: 6px;
}

.content-breadcrumb {
  color: #999;
  font-size: 14px;
}

.content-breadcrumb a {
  color: #0375be;
  transition: color 0.2s;
}

.content-breadcrumb a:hover {
  color: #005a9e;
}

/* 单页正文内容 */
.page-content {
  background: #ffffff;
  border-radius: 12px;
  padding: 35px 40px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  font-size: 16px;  /* 单页正文整体字稍大 */
  color: #444;
  line-height: 1.9;
}

.page-content h2 {
  font-size: 24px;  /* 单页二级标题放大 */
  margin-bottom: 15px;
  color: #333;
  font-weight: 600;
}

.page-content h3 {
  font-size: 20px;  /* 单页三级标题放大 */
  margin: 25px 0 10px;
  color: #333;
  font-weight: 600;
}

.page-content p {
  margin-bottom: 14px;
  text-indent: 2em;
}

.page-content .article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  margin: -6px 0 18px;
  padding: 0 0 14px;
  border-bottom: 1px solid #eee;
  font-size: 14px;
  color: #777;
  line-height: 1.6;
  text-indent: 0;
}

.page-content .article-meta strong {
  color: #666;
  font-weight: 600;
}

.page-content .article-meta time {
  font-variant-numeric: tabular-nums;
}

.page-content ul {
  margin: 8px 0 14px 1.5em;
  padding: 0;
}

.page-content li {
  margin-bottom: 6px;
}

.page-content-hero {
  margin-bottom: 20px;
  border-radius: 10px;
  overflow: hidden;
}

.page-content-hero img {
  width: 100%;
  display: block;
  object-fit: cover;
  max-height: 320px;
}

/* 内容卡片网格（列表页时可复用） */
.content-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 25px;
  margin-bottom: 30px;
}

.content-card {
  background: #ffffff;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  transition: all 0.3s ease;
  cursor: pointer;
  display: flex;
  flex-direction: column;
}

.content-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 30px rgba(0, 115, 209, 0.15);
}

.content-card-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.content-card-body {
  padding: 25px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.content-card-title {
  font-size: 18px;
  font-weight: 600;
  color: #333;
  margin-bottom: 12px;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.content-card-desc {
  font-size: 14px;
  color: #666;
  line-height: 1.6;
  margin-bottom: 15px;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.content-card-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 15px;
  border-top: 1px solid #f0f0f0;
  font-size: 13px;
  color: #999;
}

.content-card-link {
  color: #0375be;
  font-weight: 500;
  transition: color 0.2s;
}

.content-card-link:hover {
  color: #005a9e;
}

/* 列表视图 */
.content-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.content-list-item {
  background: #ffffff;
  border-radius: 12px;
  padding: 25px 30px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  transition: all 0.3s ease;
  display: flex;
  gap: 25px;
  align-items: center;
  text-decoration: none;
  color: inherit;
}

.content-list-item:hover {
  transform: translateX(5px);
  box-shadow: 0 6px 25px rgba(0, 115, 209, 0.12);
}

.content-list-item:hover .content-card-link {
  color: #005a9e;
}

.content-list-item-image {
  width: 180px;
  height: 120px;
  border-radius: 8px;
  object-fit: cover;
  flex-shrink: 0;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.content-list-item-body {
  flex: 1;
}

.content-list-item-title {
  font-size: 18px;
  font-weight: 600;
  color: #333;
  margin-bottom: 10px;
}

.content-list-item-desc {
  font-size: 14px;
  color: #666;
  line-height: 1.6;
  margin-bottom: 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.content-list-item-meta {
  font-size: 13px;
  color: #999;
}

/* 视图切换按钮 */
.view-toggle {
  display: flex;
  gap: 10px;
  margin-bottom: 25px;
  justify-content: flex-end;
}

.view-toggle-btn {
  padding: 8px 16px;
  background: #ffffff;
  border: 1px solid #e5e5e5;
  border-radius: 6px;
  cursor: pointer;
  font-size: 14px;
  color: #666;
  transition: all 0.2s;
}

.view-toggle-btn:hover {
  background: #f5f5f5;
  border-color: #0375be;
  color: #0375be;
}

.view-toggle-btn.active {
  background: #0375be;
  border-color: #0375be;
  color: #ffffff;
}

/* 产品列表页专用卡片样式（product/list.html） */
.product-card {
  background: #ffffff;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
}

.product-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 30px rgba(0, 115, 209, 0.15);
}

.product-card-link {
  display: flex;
  flex-direction: column;
  height: 100%;
  color: inherit;
}

.product-card-thumb {
  width: 100%;
  height: auto;           /* 高度自适应，由内部图片撑开 */
  overflow: hidden;
  background: #0375be;
}

.product-card-thumb img {
  width: 100%;
  height: auto;           /* 按比例缩放，不拉伸 */
  display: block;
}

/* 设备展示页（scsb-list.html）图片：保证等比缩放且完整显示 */
.device-list-main .product-card-thumb {
  background: #f5f5f5;
  padding: 0;              /* 宽度占满卡片 */
}

.device-list-main .product-card-thumb img {
  width: 100%;
  height: auto;           /* 高度自适应，按比例缩放显示全图 */
  object-fit: contain;
  display: block;
  cursor: zoom-in;
}

/* 设备展示页：卡片文案只保留标题并居中 */
.device-list-main .product-card-body {
  padding: 14px 16px 16px;
}

.device-list-main .product-card-title {
  font-size: 18px;
  font-weight: 600;
  text-align: center;
  margin: 0;
}

.device-list-main .product-card-meta {
  display: none;
}

.product-card-body {
  padding: 18px 20px 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}

.product-card-title {
  font-size: 16px;
  font-weight: 600;
  color: #333;
  line-height: 1.4;
}

.product-card-meta {
  font-size: 13px;
  color: #999;
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
}

.product-card-meta span {
  white-space: nowrap;
}

/* 产品列表：不显示“型号”等文字，只保留“查看详情” */
.product-card-meta span:not(.more) {
  display: none;
}

.product-card-meta .more {
  color: #0375be;
}

/* 分页条（产品列表页静态占位） */
.pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 26px;
  font-size: 14px;
}

.pagination a,
.pagination span {
  min-width: 32px;
  padding: 6px 10px;
  text-align: center;
  border-radius: 4px;
  border: 1px solid #e0e0e0;
  background: #ffffff;
  color: #666;
  cursor: pointer;
}

.pagination .active {
  background: #0375be;
  border-color: #0375be;
  color: #ffffff;
}

.pagination .disabled {
  opacity: 0.5;
  cursor: default;
}

/* 设备展示大图查看遮罩层 */
.image-viewer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 9999;
}

.image-viewer-overlay.is-active {
  display: flex;
}

.image-viewer-content {
  position: relative;
  max-width: 92vw;
  max-height: 92vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.image-viewer-content img {
  max-width: 100%;
  max-height: calc(92vh - 90px); /* 预留标题与按钮空间 */
  display: block;
  border-radius: 4px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.image-viewer-title {
  max-width: min(92vw, 980px);
  padding: 0 10px 6px;
  color: #fff;
  text-align: center;
  font-size: 18px;
  font-weight: 600;
  line-height: 1.35;
}

.image-viewer-close {
  position: absolute;
  top: -32px;
  right: -32px;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: none;
  cursor: pointer;
  background: #ffffff;
  color: #333;
  font-size: 18px;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.25);
}

/* 产品详情页布局（product/details.html） */
.product-detail {
  background: #ffffff;
  border-radius: 12px;
  padding: 26px 32px 30px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.product-detail-top {
  display: grid;
  grid-template-columns: minmax(0, 600px) minmax(0, 1fr);
  gap: 26px;
  margin-bottom: 24px;
}

.product-detail-gallery {
  border-radius: 10px;
  border: 1px solid #e5e5e5;
}

.product-detail-gallery .gallery-main {
  cursor: pointer;
  background: #0375be;
  overflow: hidden;
  border-radius: 10px 10px 0 0;
  aspect-ratio: 1 / 1;
}

.product-detail-gallery .gallery-main img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
  display: block;
  transition: transform 0.3s ease;
}

.product-detail-gallery .gallery-main:hover img {
  transform: scale(1.02);
}

.gallery-thumbs {
  display: flex;
  flex-wrap: nowrap;
  gap: 10px;
  padding: 12px;
  background: #fff;
  border-top: 1px solid #e5e5e5;
}

.thumb-item {
  flex: 0 0 calc(100% / 5);
  aspect-ratio: 1;
  overflow: hidden;
  border-radius: 6px;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all 0.3s ease;
  background: #f5f5f5;
}

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

.thumb-item:hover {
  border-color: #0375be;
}

.thumb-item:hover img {
  transform: scale(1.08);
}

.thumb-item.active {
  border-color: #0375be;
  box-shadow: 0 0 8px rgba(3, 117, 190, 0.4);
}

@media (max-width: 768px) {
  .gallery-thumbs {
    gap: 6px;
    padding: 8px;
  }

  .thumb-item {
    border-radius: 4px;
  }
}

.product-base-info {
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 14px;
  color: #555;
}

.product-title {
  font-size: 30px;
  line-height: 1.25;
  font-weight: 700;
  color: #1f2d3d;
  margin: 0;
}

.product-short-desc {
  margin: 2px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: #55616f;
  text-indent: 0;
}

.product-base-info p {
  line-height: 1.8;  /* 增大行间距，让文字更易读 */
  margin-bottom: 0;
}

.product-base-info-row {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.product-base-info-label {
  color: #999;
  min-width: 70px;
}

.product-base-info-value {
  color: #333;
}

.product-tags {
  margin-top: 8px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.product-tag {
  padding: 2px 10px;
  border-radius: 999px;
  border: 1px solid #e0e0e0;
  font-size: 12px;
  color: #666;
  background: #fafafa;
}

.product-detail-body {
  font-size: 16px;  /* 产品详情正文整体字稍大 */
  color: #444;
  line-height: 1.9;
}

.product-detail-body h2 {
  font-size: 20px;  /* 产品详情小标题放大 */
  margin: 18px 0 10px;
  color: #333;
  font-weight: 600;
}

.product-detail-body p {
  margin-bottom: 10px;
  text-indent: 2em;
}

.product-detail-body ul {
  margin: 6px 0 12px 1.5em;
  padding: 0;
}

.product-detail-body li {
  margin-bottom: 4px;
}

.product-spec-table {
  width: 100%;
  border-collapse: collapse;
  margin: 8px 0 16px;
  font-size: 13px;
}

.product-spec-table th,
.product-spec-table td {
  border: 1px solid #e0e0e0;
  padding: 8px 10px;
  text-align: left;
}

.product-spec-table th {
  background: #f7f9fc;
  color: #333;
  white-space: nowrap;
}

.product-detail-actions {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid #e5e5e5;
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
}

.product-phone {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
  border: 1px solid #e0e0e0;
  border-radius: 6px;
  font-size: 15px;
  color: #333;
  font-weight: 500;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.04);
  transition: all 0.3s ease;
}

.product-phone::before {
  content: "📞";
  font-size: 16px;
  display: inline-block;
}

.product-phone:hover {
  background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
  border-color: #0375be;
  box-shadow: 0 4px 8px rgba(3, 117, 190, 0.12);
  transform: translateY(-1px);
}

.btn-primary,
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 18px;
  font-size: 14px;
  border-radius: 0;
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}

.btn-primary {
  background: linear-gradient(135deg, #0375be 0%, #005a9e 100%);
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(3, 117, 190, 0.25);
  font-weight: 600;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.btn-primary::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s ease;
}

.btn-primary:hover {
  background: linear-gradient(135deg, #005a9e 0%, #0375be 100%);
  box-shadow: 0 6px 16px rgba(3, 117, 190, 0.35);
  transform: translateY(-2px);
}

.btn-primary:hover::before {
  left: 100%;
}

.btn-secondary {
  background: #ffffff;
  color: #0375be;
  border: 1px solid #0375be;
}

.btn-secondary:hover {
  background: #f5f5f5;
}

/* 子页响应式 */
@media (max-width: 1024px) {
  .page-container {
    flex-direction: column;
  }

  .category-sidebar {
    width: 100%;
    position: static;
  }

  .category-toggle {
    display: block; /* 移动端显示切换按钮 */
  }

  .category-list {
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition: max-height 0.3s ease, opacity 0.3s ease;
    margin-bottom: 0;
  }

  .category-sidebar:not(.is-collapsed) .category-list {
    max-height: 1000px; /* 足够大的值以容纳所有分类项 */
    opacity: 1;
    margin-bottom: 0;
  }

  .product-detail-top {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 768px) {
  .page-wrapper {
    padding: 20px 0;
  }

  .subpage-hero {
    min-height: 120px;
    max-height: 180px;
  }

  .subpage-hero-title {
    font-size: 22px;
    margin-bottom: 0;
  }

  .subpage-hero-subtitle {
    font-size: 13px;
  }

  .content-grid {
    /* 移动端：一行显示 2 个产品，间距稍微缩小 */
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }

  /* 移动端产品标题稍微小一点 */
  .product-card-title {
    font-size: 14px;
  }

  .content-list-item {
    flex-direction: column;
    align-items: flex-start;
  }

  .content-list-item-image {
    width: 100%;
    height: 180px;
  }

  .content-header {
    padding: 20px;
  }

  .content-header h1 {
    font-size: 24px;
  }

  .product-detail {
    padding: 20px;
  }
}

@media (max-width: 1100px) {
  .site-footer-cols {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  /* 小屏两列布局时，让"联系我们"更显眼 */
  .site-footer-cols > .footer-col:last-child {
    grid-column: 1 / -1;
  }
  .site-footer-brand {
    flex-basis: 220px;
  }
}

@media (max-width: 720px) {
  .site-footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  /* 移动端页尾：仅显示“联系我们”内容，隐藏前三个栏目 */
  .site-footer-cols {
    grid-template-columns: minmax(0, 1fr);
    width: 100%;
  }
  .site-footer-cols > .footer-col:not(:last-child) {
    display: none;
  }
  /* 移动端：联系我们不显示标题，仅保留下面的联系方式列表 */
  .site-footer-cols > .footer-col:last-child .footer-col-title {
    display: none;
  }
  .site-footer-cols > .footer-col:last-child {
    grid-column: auto;
  }

  .site-footer-brand {
    align-items: flex-start;
  }
  .footer-logo img {
    width: 180px;
  }
  .footer-qrs {
    justify-content: flex-start;
  }
}