/* ============================================================
   宝德仪器 cn_style.css
   布局 / 组件 / 自适应全部使用 Bootstrap 5 类实现，
   本文件仅保留 Bootstrap 无法等价替代的必要自定义样式。
   ============================================================ */

/* ---------- 品牌主色覆盖：让 bg-primary / text-primary / btn-primary 全部使用品牌蓝 ---------- */
:root {
  --bs-primary: #0973C1;
  --bs-primary-rgb: 9, 115, 193;
  --bs-link-color: #0973C1;
  --bs-link-hover-color: #06588f;
}

/* ---------- 全局基础 ---------- */
body {
  font-family: "Microsoft YaHei", "微软雅黑", "Helvetica Neue", Arial, sans-serif;
  background: #fff;
  color: #333;
}

/* ---------- 桌面导航：hover 蓝底白字 + 下拉菜单（纯 CSS，替代旧 js.js hover 逻辑） ---------- */
.nav .nav-item { display: flex; align-items: center; position: relative; }
.nav .nav-item:hover,
.nav .nav-item.active { background: var(--bs-primary); }
.nav .nav-item:hover > .nav-link,
.nav .nav-item.active > .nav-link { color: #fff; }
.nav .nav-item:hover > .dropdown-menu { display: block; top: 100%; left: 0; margin-top: 0; }

/* 移动端折叠菜单 active 态 */
#mnav .list-unstyled > li.active > a { background: var(--bs-primary); color: #fff; }

/* 下拉菜单美化 */
.nav .dropdown-menu {
  border: none;
  border-radius: 0 0 10px 10px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, .15);
  padding: 6px 0;
  min-width: 170px;
  overflow: hidden;
  animation: navMenuIn .18s ease-out;
}
.nav .dropdown-menu .dropdown-item {
  padding: 9px 20px;
  font-size: 14px;
  color: #333;
  border-left: 3px solid transparent;
  transition: all .15s ease;
}
.nav .dropdown-menu .dropdown-item:hover {
  background: #eef6fc;
  color: var(--bs-primary);
  border-left-color: var(--bs-primary);
}
@keyframes navMenuIn {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: none; }
}

/* ---------- 产品中心三级 mega menu ---------- */
.nav .mega-menu {
  display: none;
  column-count: 3;            /* 瀑布流：按列排布，列高自动平衡，短分组下方不再留白 */
  column-gap: 24px;
  column-rule: 1px solid #eef1f6;   /* 列分隔线，让各二级分组更清晰 */
  min-width: 640px;
  padding: 15px 20px;
}
.nav .nav-item:hover > .mega-menu { display: block; }
.nav .mega-group { break-inside: avoid; page-break-inside: avoid; margin-bottom: 14px; }
.nav .mega-title {
  display: block;
  font-weight: 600;
  color: var(--bs-primary);
  padding: 6px 10px;
  border-left: 3px solid var(--bs-primary);
  text-decoration: none;
}
.nav .mega-title:hover { background: #f8f9fa; }
.nav .mega-menu .dropdown-item {
  padding: 5px 10px 5px 20px;
  font-size: 13px;
  border-left: 3px solid transparent;
}

/* ---------- 分页（由后台 PHP 生成，无法改类名） ---------- */
.pages { text-align: center; padding: 20px 0; }
.pages a, .pages span { display: inline-block; margin: 0 3px; padding: 5px 12px; border: 1px solid #dee2e6; border-radius: 4px; color: var(--bs-primary); background: #fff; text-decoration: none; }
.pages a:hover { background: var(--bs-primary); color: #fff; border-color: var(--bs-primary); }
.pages .current, .pages .on { background: var(--bs-primary); color: #fff; border-color: var(--bs-primary); }

/* ---------- 富文本内容（编辑器输出 HTML，无法添加类名） ---------- */
.showcontent img { max-width: 100%; height: auto; }
.showcontent video { width: 100%; }
.showcontent table { max-width: 100%; }

/* ---------- 承接模板原内联样式（模板中已移除 style=，统一收敛于此） ---------- */
.title-line { width: 5px; height: 20px; flex-shrink: 0; }
.logopos { width: 35%; z-index: 2; bottom: 10px; left: 10px; }
.art-thumb { width: 120px; height: 90px; object-fit: cover; }

/* ---------- 左侧分类菜单 ---------- */
.side-menu { padding: 0.75rem 0 0.5rem; }
.side-menu .list-group-item {
  border-left: 3px solid transparent;
  color: #444;
  padding: 0.9rem 1.25rem;
  font-size: 15px;
  transition: all .15s ease;
}
.side-menu .list-group-item:hover {
  background: #eef6fc;
  color: var(--bs-primary);
  border-left-color: var(--bs-primary);
}
.side-menu .list-group-item.active {
  background: var(--bs-primary);
  border-color: transparent;
  border-left-color: #fff;
  color: #fff;
}
.side-menu .list-group-item.active:hover { color: #fff; }
/* active 与后续子列表间距 */
.side-menu .list-group-item.active + .list-group-item { margin-top: 0.6rem; }
/* 列表项小箭头图标：正常态主色、active 态白色 */
.list-group-item .fa-angle-right { color: var(--bs-primary); }
.list-group-item.active .fa-angle-right { color: #fff; }
/* 二级子项（产品列表） */
.side-menu .list-group-item.ps-5 {
  position: relative;
  font-size: 0.875rem;
  color: #555;
  padding: 0.65rem 1.25rem 0.65rem 2.6rem;
}
.side-menu .list-group-item.ps-5::before {
  content: "";
  position: absolute;
  left: 1.5rem;
  top: 50%;
  transform: translateY(-50%);
  width: 5px;
  height: 5px;
  background: var(--bs-primary);
  border-radius: 50%;
  opacity: 0.7;
}
.side-menu .list-group-item.ps-5:hover {
  background: #eef6fc;
  color: var(--bs-primary);
}
.side-menu .list-group-item.ps-5:hover {
  background: #eef6fc;
  color: var(--bs-primary);
}

/* 无二级菜单时隐藏左侧卡片阴影，仅保留标题块 */
.shadow-sm.rounded.overflow-hidden.bg-white:has(.side-menu:not(:has(.list-group-item))) {
  box-shadow: none !important;
  background: transparent !important;
  border-radius: 0 !important;
}
.shadow-sm.rounded.overflow-hidden.bg-white:has(.side-menu:not(:has(.list-group-item))) .bg-primary {
  border-radius: 0.375rem;
}

/* ---------- 单页内容排版 ---------- */
.page-content { font-size: 15px; line-height: 1.9; color: #333; }
.page-content p { margin-bottom: 1rem; }
.page-content img { max-width: 100%; height: auto; border-radius: 6px; }
.page-content a { color: var(--bs-primary); }

/* 产品卡片 hover：图片放大 + 标题变色下划线 */
.product-card .card-img-top { transition: transform .45s ease; }
.product-card:hover .card-img-top { transform: scale(1.08); }
.product-card:hover .card-text { color: var(--bs-primary); text-decoration: underline; }

/* 新闻标题 hover：变色 + 下划线 */
.news-link { transition: color .2s ease; }
.news-link:hover { color: var(--bs-primary) !important; text-decoration: underline !important; }
/* 新闻列表整项 hover 时标题变色下划线 */
.news-item:hover .news-link { color: var(--bs-primary) !important; text-decoration: underline !important; }

/* 新闻列表前的小菱形图标 */
.news-bullet {
  width: 5px;
  height: 5px;
  background: #333;
  transform: rotate(45deg);
  margin-top: 1px;
  opacity: .75;
}

/* 区块标题 MORE+ 按钮 */
.section-more {
  display: inline-block;
  background: #fff;
  color: var(--bs-primary);
  font-size: 12px;
  font-weight: 700;
  line-height: 1;
  padding: 6px 14px;
  border-radius: 30px;
  text-decoration: none;
  box-shadow: 0 2px 6px rgba(0, 0, 0, .12);
  transition: all .2s ease;
}
.section-more:hover {
  background: transparent;
  color: #fff;
  box-shadow: inset 0 0 0 1.5px #fff;
}

/* ---------- 入场动画（替代 animate.css，仅保留页面用到的 fadeInUp） ---------- */
.animate__animated { animation-duration: 1s; animation-fill-mode: both; }
.animate__fadeInUp { animation-name: fadeInUp; }
@keyframes fadeInUp {
  from { opacity: 0; transform: translate3d(0, 100%, 0); }
  to { opacity: 1; transform: none; }
}