/* ================================================
   前台样式 - 仿源叶生物网站风格
   ================================================ */

:root {
  --primary: #1a6fc4;
  --primary-dark: #1459a3;
  --primary-light: #e8f0fb;
  --text-dark: #333;
  --text-muted: #888;
  --border: #e0e0e0;
  --bg-light: #f5f7fa;
}

/* ---- 全局 ---- */
body { font-family: "Microsoft YaHei", "微软雅黑", Arial, sans-serif; color: var(--text-dark); }
a { text-decoration: none; color: var(--primary); }
a:hover { color: var(--primary-dark); }

/* ---- Header ---- */
.header-top {
  background: #f0f0f0;
  border-bottom: 1px solid #ddd;
  padding: 6px 0;
  font-size: 13px;
}
.header-top a { color: #555; }
.header-top a:hover { color: var(--primary); }

.header-main {
  background: #fff;
  padding: 15px 0;
  border-bottom: 2px solid var(--primary);
}

.logo-text { display: flex; align-items: center; }
.logo-cn {
  font-size: 20px;
  font-weight: bold;
  color: var(--primary);
  white-space: nowrap;
}

.search-input { height: 42px; border-right: none; font-size: 14px; }
.btn-search {
  background: var(--primary);
  color: #fff;
  border: 1px solid var(--primary);
  padding: 0 20px;
  font-size: 15px;
}
.btn-search:hover { background: var(--primary-dark); color: #fff; }

.header-phone .phone-num { font-size: 18px; font-weight: bold; color: var(--primary); }

/* ---- 导航 ---- */
.site-nav {
  background: var(--primary);
  padding: 0;
}
.btn-category {
  background: #e05e00;
  color: #fff;
  border-radius: 0;
  padding: 12px 20px;
  font-size: 15px;
  border: none;
}
.btn-category:hover { background: #c04d00; color: #fff; }

.site-nav .nav-link { color: rgba(255,255,255,0.9); padding: 12px 16px; font-size: 14px; }
.site-nav .nav-link:hover { color: #fff; background: rgba(255,255,255,0.15); }

.category-menu { min-width: 180px; border-radius: 0; }
.category-menu .dropdown-item { padding: 8px 16px; font-size: 13px; }
.category-menu .dropdown-item:hover { background: var(--primary-light); color: var(--primary); }

/* ---- Banner ---- */
.banner-section { background: var(--primary); }
.banner-inner {
  min-height: 300px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}
.banner-overlay {
  position: absolute; inset: 0;
  background: rgba(0,0,0,0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
}
/* 兼容旧版 */
.banner-placeholder {
  background: linear-gradient(135deg, var(--primary) 0%, #0d3d6b 100%);
  min-height: 280px;
  padding: 60px 20px;
}


/* ---- 统计栏 ---- */
.stats-bar {
  background: var(--primary);
  padding: 20px 0;
  color: #fff;
}
.stat-item { padding: 10px; }
.stat-num { font-size: 32px; font-weight: bold; }
.stat-label { font-size: 13px; opacity: 0.8; }

/* ---- 章节标题 ---- */
.section-title {
  border-left: 4px solid var(--primary);
  padding-left: 12px;
  margin-bottom: 5px;
}
.section-title h2 { font-size: 22px; display: inline-block; margin: 0 10px 0 0; }
.section-title span { color: var(--text-muted); font-size: 13px; }

/* ---- 分类卡片 ---- */
.category-card {
  display: block;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 20px 15px;
  text-align: center;
  transition: all .2s;
  color: var(--text-dark);
}
.category-card:hover {
  border-color: var(--primary);
  box-shadow: 0 4px 15px rgba(26,111,196,.15);
  transform: translateY(-3px);
  color: var(--primary);
}
.cat-icon { font-size: 32px; color: var(--primary); margin-bottom: 10px; }
.cat-name { font-size: 14px; font-weight: bold; }
.cat-count { font-size: 12px; margin-top: 5px; }

/* ---- 产品卡片 ---- */
.product-card {
  display: block;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
  transition: all .2s;
  color: var(--text-dark);
}
.product-card:hover { border-color: var(--primary); box-shadow: 0 4px 15px rgba(26,111,196,.15); }
.product-img { height: 180px; background: var(--bg-light); display: flex; align-items: center; justify-content: center; overflow: hidden; }
.product-img img { max-width: 100%; max-height: 100%; object-fit: contain; }
.no-image { color: #ccc; font-size: 48px; }
.product-info { padding: 12px; }
.product-name { font-size: 13px; line-height: 1.4; height: 36px; overflow: hidden; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
.product-sn { font-size: 12px; margin-top: 4px; }
.price-tag { color: #e53e3e; font-size: 14px; font-weight: bold; }

/* ---- 搜索页 ---- */
.sidebar-section {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 15px;
  margin-bottom: 20px;
}
.sidebar-title { font-size: 15px; font-weight: bold; color: var(--primary); border-bottom: 1px solid var(--border); padding-bottom: 8px; margin-bottom: 10px; }
.cat-list { list-style: none; padding: 0; margin: 0; }
.cat-list li { border-bottom: 1px solid #f0f0f0; }
.cat-list li a { display: block; padding: 6px 8px; font-size: 13px; color: #555; }
.cat-list li a:hover, .cat-list li.active a { color: var(--primary); background: var(--primary-light); }

.product-table th { background: var(--bg-light); font-size: 13px; }
.product-table td { font-size: 13px; vertical-align: middle; }
.product-link { color: var(--text-dark); font-weight: 500; }
.product-link:hover { color: var(--primary); }
.result-info { font-size: 14px; color: #666; }
.text-monospace { font-family: monospace; }

/* ---- 产品详情 ---- */
.product-detail-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 20px;
}
.product-title { font-size: 22px; color: var(--text-dark); }
.product-title-en { font-size: 15px; }
.product-attrs { margin-top: 15px; font-size: 14px; }
.attr-key { background: var(--bg-light); width: 100px; color: #666; }
.attr-val { font-weight: 500; }
.specs-table { font-size: 14px; }

.no-image-large {
  background: var(--bg-light);
  height: 250px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
}

.related-list { list-style: none; padding: 0; margin: 0; }
.related-list li { border-bottom: 1px solid #f0f0f0; }
.related-list li a { display: block; padding: 8px 4px; }
.related-name { font-size: 13px; color: var(--text-dark); }
.sidebar-contact { background: #fff; border: 1px solid var(--border); border-radius: 6px; padding: 15px; }

/* ---- 页脚 ---- */
.footer-main { background: #2c3e50; color: #ccc; padding: 40px 0; font-size: 14px; }
.footer-main h5 { color: #fff; margin-bottom: 15px; }
.footer-main a { color: #aaa; }
.footer-main a:hover { color: #fff; }
.footer-main ul li { margin-bottom: 6px; }
.footer-bottom { background: #1a252f; color: #888; padding: 12px 0; font-size: 13px; }

/* ---- 特性图标 ---- */
.feature-icon { margin-bottom: 15px; }

/* ---- 响应式：平板 ---- */
@media (max-width: 992px) {
  .header-main { padding: 12px 0; }
  .logo-cn { font-size: 18px; }
  .btn-category { padding: 10px 14px; font-size: 14px; }
  .site-nav .nav-link { padding: 10px 12px; }
  .product-detail-card { padding: 15px; }
  .product-title { font-size: 20px; }
  .attr-key { width: 85px; }
}

/* ---- 响应式：手机 ---- */
@media (max-width: 768px) {
  /* 顶部栏 */
  .mall-topbar .container { padding-left: 10px; padding-right: 10px; }
  .mall-topbar-link { font-size: 12px; }
  .mall-topbar .d-flex.gap-3 { gap: 12px !important; font-size: 12px; }

  /* Header */
  .header-main { padding: 10px 0; }
  .logo img { max-height: 45px !important; }
  .logo-cn { font-size: 16px; }
  .logo-en { font-size: 11px; }

  /* 导航折叠 */
  .site-nav { padding: 0; }
  .site-nav .container { flex-wrap: nowrap; }
  .site-nav .nav-category { order: -1; }
  .site-nav .navbar-collapse { margin-top: 4px; }
  .site-nav .navbar-nav .nav-link { padding: 10px 15px; border-bottom: 1px solid rgba(255,255,255,0.1); }
  .site-nav .navbar-toggler { border: 1px solid rgba(255,255,255,0.6); }
  .site-nav .navbar-toggler-icon { filter: brightness(0) invert(1); }
  .btn-category { padding: 10px 12px; font-size: 13px; }

  /* 搜索页表格 */
  .product-table-wrapper { margin: 0 -10px; padding: 0 10px; }
  .product-table th, .product-table td { white-space: nowrap; font-size: 12px; }
  .product-table .product-link { max-width: 160px; display: inline-block; white-space: normal; vertical-align: top; font-size: 12px; }

  /* 产品详情 */
  .product-detail-card { padding: 12px; border-radius: 0; }
  .product-title { font-size: 18px; }
  .product-title-en { font-size: 13px; }
  .product-attrs { font-size: 13px; margin-top: 10px; }
  .attr-key { width: 80px; font-size: 13px; padding: 6px 8px; }
  .attr-val { font-size: 13px; padding: 6px 8px; }
  .specs-section { font-size: 13px; }
  .specs-table { font-size: 12px; }
  .specs-table th, .specs-table td { padding: 6px; white-space: nowrap; }
  .contact-btns .btn-lg { font-size: 14px; padding: 8px 16px; }
  .no-image-large { height: 180px; }

  /* PDF iframe 移动端高度缩小 */
  #manualIframe { height: 400px !important; }

  /* Tab 移动端 */
  .product-detail-tabs .nav-tabs .nav-link { font-size: 13px; padding: 8px 12px; }

  /* 侧边栏 */
  .sidebar-section { margin-bottom: 12px; padding: 12px; }
  .sidebar-contact { padding: 12px; }

  /* 页脚 */
  .footer-main { padding: 25px 0; font-size: 13px; }
  .footer-main h5 { font-size: 15px; }
  .footer-bottom { font-size: 12px; }

  /* 面包屑 */
  .breadcrumb { font-size: 12px; margin-bottom: 8px; }

  /* 分页 */
  .pagination .page-link { font-size: 13px; padding: 6px 10px; }
}

/* ---- 超小屏幕 ---- */
@media (max-width: 480px) {
  .product-table .product-link { max-width: 120px; }
  .btn-category { font-size: 12px; padding: 8px 10px; }
  .btn-category i { margin-right: 4px; }
}