/* ===================================================================
   全局重置与基础样式
   =================================================================== */
*,*::before,*::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font: 14px/1.6 "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
  color: #2c3e50;
  background: #fff;
  -webkit-font-smoothing: antialiased;
  min-width: 1200px;
}
a { color: #444; text-decoration: none; transition: all .3s ease; }
a:hover { color: #104492; }
img { max-width: 100%; height: auto; vertical-align: middle; }
ul, ol, li, h1, h2, h3, h4, h5, h6, p { margin: 0; padding: 0; list-style: none; font-weight: normal; }
button, input, select, textarea { font-family: inherit; outline: none; border: none; }
.clearfix::after { content: ""; display: block; clear: both; }
.clearfix { zoom: 1; }

/* CSS 变量：华通气动蓝色调 */
:root {
  --primary: #104492;        /* 主色 - 华通蓝 */
  --primary-light: #1a5fb4;  /* 浅蓝 */
  --primary-dark: #0a2f63;   /* 深蓝 */
  --accent: #ff6b35;         /* 强调色 - 暖橙 */
  --success: #28a745;
  --text-title: #1f2937;
  --text-body: #4b5563;
  --text-muted: #9ca3af;
  --bg-white: #ffffff;
  --bg-light: #f8fafc;
  --bg-gray: #f1f5f9;
  --border: #e5e7eb;
  --shadow-sm: 0 1px 3px rgba(0,0,0,.08);
  --shadow: 0 6px 18px rgba(16,68,146,.10);
  --shadow-lg: 0 12px 32px rgba(16,68,146,.15);
  --radius: 4px;
  --radius-lg: 8px;
  --transition: all .3s ease;
}

/* 容器 */
.container { width: 1200px; margin: 0 auto; padding: 0 15px; }

/* 通用 */
.section { padding: 80px 0; }
.section-gray { background: var(--bg-light); }
.section-header { text-align: center; margin-bottom: 50px; }
.section-header-left { text-align: left; margin-bottom: 30px; }
.section-eyebrow { display: block; color: var(--primary); font-size: 13px; letter-spacing: 4px; text-transform: uppercase; margin-bottom: 10px; }
.section-title {
  font-size: 32px; color: var(--text-title); font-weight: 600; position: relative; display: inline-block; margin-bottom: 12px;
}
.section-title small { color: var(--text-muted); font-size: 16px; font-weight: 400; letter-spacing: 2px; margin-left: 8px; }
.section-desc { color: var(--text-body); font-size: 15px; }
.section-more { text-align: center; margin-top: 40px; }

/* 链接按钮 */
.more-link { color: var(--primary); font-size: 15px; display: inline-block; padding: 4px 0; position: relative; transition: all .3s; }
.more-link i { margin-left: 4px; transition: all .3s; }
.more-link:hover { color: var(--accent); }
.more-link:hover i { transform: translateX(4px); }
.btn { display: inline-block; padding: 10px 28px; border-radius: 4px; font-size: 14px; transition: all .3s; cursor: pointer; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--accent); color: #fff; }
.btn-default { background: #fff; color: var(--primary); border: 1px solid var(--primary); }
.btn-default:hover { background: var(--primary); color: #fff; }

/* ===================================================================
   顶部信息条
   =================================================================== */
.topbar { background: #f5f7fa; color: #6b7280; font-size: 12px; line-height: 38px; border-bottom: 1px solid #e5e7eb; }
.topbar a { color: #6b7280; margin: 0 8px; }
.topbar a:hover { color: var(--primary); }
.topbar-left { float: left; }
.topbar-right { float: right; }
.topbar-tel { margin-left: 16px; padding-left: 16px; border-left: 1px solid #e5e7eb; }
.topbar-tel strong { color: var(--accent); font-size: 16px; font-weight: 600; }
.icon-tel::before { content: "📞"; margin-right: 4px; font-size: 12px; }

/* ===================================================================
   头部 Header
   =================================================================== */
.header { background: #fff; padding: 22px 0; }
.logo { float: left; margin-right: 30px; }
.logo img { max-height: 70px; }
.header-info { float: left; padding: 8px 0 8px 30px; border-left: 1px solid #e5e7eb; }
.header-name { font-size: 22px; color: var(--primary); font-weight: 600; margin-bottom: 4px; }
.header-en { color: var(--text-muted); font-size: 13px; }

/* 顶部搜索 */
.header-search { float: right; width: 380px; margin-top: 12px; }
.search-input {
  display: flex; height: 42px; border: 2px solid var(--primary); border-radius: 4px; overflow: hidden;
}
.search-input input {
  flex: 1; padding: 0 14px; font-size: 14px; border: none; outline: none; background: #fff;
}
.search-input button {
  width: 56px; background: var(--primary); color: #fff; cursor: pointer; font-size: 16px;
  transition: all .3s;
}
.search-input button:hover { background: var(--accent); }
.search-hot { color: var(--text-muted); font-size: 12px; margin-top: 8px; line-height: 1.6; }
.search-hot a { color: var(--text-body); margin: 0 6px; }
.search-hot a:hover { color: var(--primary); }

/* ===================================================================
   主导航 Nav
   =================================================================== */
.nav { background: var(--primary); position: relative; z-index: 999; box-shadow: 0 2px 8px rgba(16,68,146,.12); }
.nav-list > li { float: left; position: relative; }
.nav-list > li > a {
  display: block; padding: 0 30px; line-height: 56px; color: #fff; font-size: 15px; font-weight: 500;
  position: relative;
}
.nav-list > li > a:hover, .nav-list > li.active > a, .nav-list > li.nav-home > a { background: var(--primary-dark); color: #fff; }
.nav-list > li > a::after {
  content: ""; position: absolute; left: 50%; bottom: 0; width: 0; height: 3px; background: var(--accent);
  transition: all .3s; transform: translateX(-50%);
}
.nav-list > li:hover > a::after, .nav-list > li.active > a::after { width: 60%; }
.nav-list .icon-home::before { content: "⌂"; font-size: 18px; }

/* 二级菜单 */
.nav-sub {
  position: absolute; left: 0; top: 100%; min-width: 220px; background: #fff; box-shadow: 0 6px 18px rgba(0,0,0,.10);
  display: none; padding: 6px 0;
}
.nav-list > li.has-children:hover .nav-sub { display: block; }
.nav-sub li a {
  display: block; padding: 0 24px; line-height: 40px; color: #4b5563; font-size: 14px;
  border-left: 3px solid transparent; transition: all .3s;
}
.nav-sub li a:hover { color: var(--primary); background: #f0f4f8; border-left-color: var(--primary); }

/* ===================================================================
   Banner 轮播
   =================================================================== */
.banner { position: relative; height: 580px; }
.banner-swiper { width: 100%; height: 100%; }
.banner-swiper .swiper-slide a {
  display: block; width: 100%; height: 100%; background: no-repeat center/cover;
}
.banner-mask { position: absolute; left: 0; right: 0; top: 0; bottom: 0; background: linear-gradient(to right, rgba(10,47,99,.6), rgba(16,68,146,.2)); }
.banner-text { position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%); z-index: 2; text-align: center; color: #fff; }
.banner-text h2 { font-size: 48px; font-weight: 600; margin-bottom: 16px; text-shadow: 0 2px 12px rgba(0,0,0,.3); }
.banner-text p { font-size: 20px; opacity: .9; }
.banner-pagination { bottom: 30px !important; }
.banner-prev, .banner-next { color: rgba(255,255,255,.7); width: 50px; height: 50px; }
.banner-prev:hover, .banner-next:hover { color: #fff; }
.banner-prev::after, .banner-next::after { font-size: 28px; font-weight: bold; }

/* ===================================================================
   服务优势
   =================================================================== */
.advantage { padding: 50px 0; background: #fff; box-shadow: 0 6px 20px rgba(16,68,146,.06); margin-top: -50px; position: relative; z-index: 5; }
.advantage-grid { display: flex; flex-wrap: wrap; margin: 0 -15px; }
.advantage-item { flex: 1; padding: 24px 15px; text-align: center; }
.advantage-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 64px; height: 64px; border-radius: 50%; background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff; font-size: 28px; margin-bottom: 14px;
}
.advantage-item h4 { font-size: 18px; color: var(--text-title); margin-bottom: 8px; font-weight: 600; }
.advantage-item p { color: var(--text-muted); font-size: 13px; line-height: 1.6; }

/* ===================================================================
   产品中心
   =================================================================== */
.product-tab { margin-bottom: 30px; }
.product-tab-nav { text-align: center; }
.product-tab-nav li { display: inline-block; margin: 0 4px; }
.product-tab-nav li a {
  display: inline-block; padding: 8px 24px; border: 1px solid var(--border); border-radius: 30px;
  color: var(--text-body); font-size: 14px; transition: all .3s;
}
.product-tab-nav li.active a, .product-tab-nav li a:hover { background: var(--primary); color: #fff; border-color: var(--primary); }
.product-grid { display: flex; flex-wrap: wrap; margin: 0 -10px; }
.product-item { width: 25%; padding: 0 10px; margin-bottom: 20px; }
.product-item a {
  display: block; background: #fff; border-radius: 6px; overflow: hidden; transition: all .3s;
  box-shadow: 0 2px 6px rgba(0,0,0,.05);
}
.product-item a:hover { transform: translateY(-4px); box-shadow: 0 12px 24px rgba(16,68,146,.15); }
.product-img { width: 100%; height: 220px; overflow: hidden; background: #f8fafc; }
.product-img img { width: 100%; height: 100%; object-fit: cover; transition: all .5s; }
.product-item a:hover .product-img img { transform: scale(1.06); }
.product-name { font-size: 15px; color: var(--text-title); padding: 16px 16px 4px; font-weight: 500; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.product-desc { color: var(--text-muted); font-size: 12px; padding: 0 16px; height: 36px; overflow: hidden; }
.product-more { display: block; padding: 8px 16px 14px; color: var(--primary); font-size: 13px; }

/* 产品列表页 */
.product-list { display: flex; flex-wrap: wrap; margin: 0 -10px; }
.product-list li { width: 25%; padding: 0 10px; margin-bottom: 20px; }

/* ===================================================================
   关于华通
   =================================================================== */
.about-img { float: left; width: 480px; padding-right: 50px; position: relative; }
.about-img > img { border-radius: 8px; box-shadow: 0 8px 24px rgba(0,0,0,.10); }
.about-stat { position: absolute; left: 30px; bottom: 30px; right: 80px; background: #fff; padding: 20px; display: flex; box-shadow: 0 6px 20px rgba(16,68,146,.12); border-radius: 4px; }
.about-stat-item { flex: 1; text-align: center; border-right: 1px solid #f1f5f9; }
.about-stat-item:last-child { border-right: none; }
.about-stat-item strong { display: block; color: var(--primary); font-size: 24px; font-weight: 700; }
.about-stat-item strong small { font-size: 14px; margin-left: 2px; }
.about-stat-item span { color: var(--text-muted); font-size: 12px; }

.about-text { float: left; width: 670px; padding-top: 20px; }
.about-title { font-size: 30px; color: var(--text-title); line-height: 1.4; font-weight: 600; margin-bottom: 18px; }
.about-desc { color: var(--text-body); font-size: 14px; line-height: 1.8; margin-bottom: 18px; }
.about-features { margin-top: 12px; }
.about-features li { padding: 6px 0; color: var(--text-body); font-size: 14px; }
.about-features li i { color: var(--primary); margin-right: 8px; font-weight: bold; }
.icon-check::before { content: "✓"; color: var(--primary); font-weight: bold; }

/* ===================================================================
   应用领域
   =================================================================== */
.solution-grid { display: flex; flex-wrap: wrap; margin: 0 -10px; }
.solution-item { width: 33.333%; padding: 0 10px; margin-bottom: 20px; }
.solution-item {
  background: #fff; padding: 30px 24px; border-radius: 4px; box-shadow: 0 2px 8px rgba(0,0,0,.05);
  transition: all .3s; position: relative; overflow: hidden; border-top: 3px solid var(--primary);
}
.solution-item:hover { transform: translateY(-4px); box-shadow: 0 10px 24px rgba(16,68,146,.15); }
.solution-num { font-size: 36px; font-weight: 800; color: var(--bg-gray); line-height: 1; margin-bottom: 12px; }
.solution-item h4 { font-size: 18px; color: var(--text-title); margin-bottom: 8px; font-weight: 600; }
.solution-item p { color: var(--text-body); font-size: 13px; line-height: 1.6; }

/* ===================================================================
   荣誉资质
   =================================================================== */
.honor-swiper { padding-bottom: 50px; }
.honor-img { width: 100%; height: 180px; background: #fff; display: flex; align-items: center; justify-content: center; border: 1px solid var(--border); border-radius: 4px; overflow: hidden; transition: all .3s; }
.honor-img img { max-width: 100%; max-height: 100%; }
.honor-swiper .swiper-slide a:hover .honor-img { border-color: var(--primary); transform: translateY(-3px); }
.honor-swiper .swiper-slide h4 { text-align: center; font-size: 13px; color: var(--text-body); margin-top: 12px; }

/* 荣誉列表页 */
.honor-grid { display: flex; flex-wrap: wrap; margin: 0 -10px; }
.honor-grid-item { width: 25%; padding: 0 10px; margin-bottom: 20px; }
.honor-grid-item a { display: block; background: #fff; border: 1px solid var(--border); border-radius: 4px; overflow: hidden; transition: all .3s; }
.honor-grid-item a:hover { box-shadow: var(--shadow); transform: translateY(-2px); }
.honor-grid-img { width: 100%; height: 220px; display: flex; align-items: center; justify-content: center; background: #fff; }
.honor-grid-img img { max-width: 100%; max-height: 100%; }
.honor-grid-item h4 { padding: 14px; text-align: center; font-size: 14px; color: var(--text-body); }

/* ===================================================================
   案例展示
   =================================================================== */
.case-grid { display: flex; flex-wrap: wrap; margin: 0 -10px; }
.case-item { width: 33.333%; padding: 0 10px; margin-bottom: 20px; }
.case-item a { display: block; border-radius: 6px; overflow: hidden; position: relative; }
.case-img { width: 100%; height: 240px; overflow: hidden; }
.case-img img { width: 100%; height: 100%; object-fit: cover; transition: all .5s; }
.case-item a:hover .case-img img { transform: scale(1.06); }
.case-info {
  position: absolute; left: 0; right: 0; bottom: 0; padding: 16px 20px; color: #fff;
  background: linear-gradient(to top, rgba(10,47,99,.85), transparent); transition: all .3s;
}
.case-info h4 { font-size: 16px; font-weight: 500; margin-bottom: 4px; }
.case-info span { font-size: 12px; opacity: .85; }

/* 案例列表 */
.case-grid-list { display: flex; flex-wrap: wrap; margin: 0 -10px; }
.case-grid-item { width: 33.333%; padding: 0 10px; margin-bottom: 20px; }
.case-grid-item a { display: block; background: #fff; border-radius: 6px; overflow: hidden; transition: all .3s; box-shadow: 0 2px 6px rgba(0,0,0,.05); }
.case-grid-item a:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.case-grid-img { width: 100%; height: 220px; overflow: hidden; }
.case-grid-img img { width: 100%; height: 100%; object-fit: cover; transition: all .5s; }
.case-grid-item a:hover .case-grid-img img { transform: scale(1.06); }
.case-grid-info { padding: 16px 20px; text-align: center; }
.case-grid-info h3 { font-size: 16px; color: var(--text-title); margin-bottom: 4px; font-weight: 500; }
.case-grid-more { color: var(--primary); font-size: 13px; }

/* ===================================================================
   新闻资讯
   =================================================================== */
.news-grid { display: flex; }
.news-main { width: 50%; padding-right: 30px; }
.news-list { width: 50%; }
.news-feature a { display: block; background: #fff; border-radius: 6px; overflow: hidden; box-shadow: 0 2px 6px rgba(0,0,0,.05); }
.news-feature .news-img { width: 100%; height: 280px; overflow: hidden; }
.news-feature .news-img img { width: 100%; height: 100%; object-fit: cover; transition: all .5s; }
.news-feature a:hover .news-img img { transform: scale(1.05); }
.news-info { padding: 24px; }
.news-info h3 { font-size: 18px; color: var(--text-title); margin-bottom: 12px; line-height: 1.4; font-weight: 600; }
.news-info p { color: var(--text-body); font-size: 14px; line-height: 1.7; }
.news-date { display: inline-block; margin-top: 12px; color: var(--text-muted); font-size: 12px; }

.news-list ul li { border-bottom: 1px dashed var(--border); padding: 16px 0; }
.news-list ul li a { display: flex; align-items: center; }
.news-list ul li h4 { flex: 1; font-size: 14px; color: var(--text-body); font-weight: 400; transition: all .3s; }
.news-list ul li a:hover h4 { color: var(--primary); }
.news-list ul li .news-date { width: 90px; text-align: right; margin-top: 0; }

/* 新闻列表页 */
.news-items { }
.news-item { background: #fff; border: 1px solid var(--border); border-radius: 6px; margin-bottom: 20px; transition: all .3s; }
.news-item:hover { box-shadow: var(--shadow); }
.news-item a { display: block; }
.news-item-img { float: left; width: 240px; height: 160px; overflow: hidden; border-radius: 6px 0 0 6px; }
.news-item-img img { width: 100%; height: 100%; object-fit: cover; }
.news-item-info { margin-left: 270px; padding: 20px 24px; }
.news-item-info h3 { font-size: 18px; color: var(--text-title); margin-bottom: 10px; font-weight: 500; }
.news-item-info h3:hover { color: var(--primary); }
.news-item-desc { color: var(--text-muted); font-size: 13px; line-height: 1.7; margin-bottom: 12px; }
.news-item-meta { color: var(--text-muted); font-size: 12px; }
.news-item-meta span { margin-right: 16px; }
.news-item-more { float: right; color: var(--primary); }

/* 新闻详情 */
.news-article { background: #fff; padding: 40px 50px; border-radius: 6px; box-shadow: 0 2px 8px rgba(0,0,0,.04); }
.news-article-title { font-size: 28px; color: var(--text-title); line-height: 1.4; font-weight: 600; text-align: center; margin-bottom: 20px; }
.news-article-meta { text-align: center; color: var(--text-muted); font-size: 13px; padding-bottom: 20px; border-bottom: 1px solid var(--border); margin-bottom: 30px; }
.news-article-meta span { margin: 0 12px; }
.news-article-content { font-size: 15px; line-height: 1.9; color: var(--text-body); }
.news-article-content img { max-width: 100%; height: auto; }
.news-article-tags { margin-top: 24px; padding-top: 20px; border-top: 1px solid var(--border); }
.news-article-tags a { display: inline-block; margin: 4px 6px; padding: 4px 14px; background: var(--bg-light); border-radius: 30px; color: var(--text-body); font-size: 13px; }
.news-article-share { margin-top: 16px; color: var(--text-muted); font-size: 13px; }
.news-article-share a { margin-left: 10px; color: var(--text-body); }
.news-article-share a:hover { color: var(--primary); }
.news-article-prevnext { margin-top: 30px; padding-top: 20px; border-top: 1px solid var(--border); }
.news-article-prevnext a { display: block; color: var(--text-body); font-size: 14px; padding: 8px 0; }
.news-article-prevnext a span { color: var(--primary); font-weight: 500; }
.news-article-prevnext a:hover { color: var(--primary); }
.news-article-prevnext .prev { float: left; text-align: left; }
.news-article-prevnext .next { float: right; text-align: right; }

/* 相关资讯 */
.news-related-list { display: flex; flex-wrap: wrap; margin: 0 -10px; }
.news-related-list li { width: 25%; padding: 0 10px; }
.news-related-list li a { display: block; background: #fff; border-radius: 4px; overflow: hidden; box-shadow: 0 2px 6px rgba(0,0,0,.05); transition: all .3s; }
.news-related-list li a:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.news-related-img { width: 100%; height: 130px; overflow: hidden; }
.news-related-img img { width: 100%; height: 100%; object-fit: cover; }
.news-related-list li h4 { padding: 12px; font-size: 14px; color: var(--text-body); line-height: 1.4; height: 60px; overflow: hidden; }
.news-related-date { display: block; padding: 0 12px 12px; color: var(--text-muted); font-size: 12px; }

/* ===================================================================
   子页 Banner
   =================================================================== */
.sub-banner {
  height: 280px; background: linear-gradient(135deg, rgba(16,68,146,.85), rgba(26,95,180,.65)), no-repeat center/cover;
  display: flex; align-items: center; color: #fff; text-align: center;
}
.sub-banner h2 { font-size: 36px; font-weight: 600; margin-bottom: 12px; }
.sub-banner p { font-size: 14px; letter-spacing: 6px; opacity: .9; }

.banner-sub {
  height: 220px;
  overflow: hidden;
}
.banner-sub .swiper-wrapper,
.banner-sub .swiper-slide { height: 100%; }
.banner-sub .swiper-slide a {
  display: block;
  height: 100%;
  background: no-repeat center/cover;
}
.banner-sub .swiper-pagination-bullet {
  width: 10px; height: 10px; background: #fff; opacity: .5;
}
.banner-sub .swiper-pagination-bullet-active { opacity: 1; }

/* ===================================================================
   面包屑
   =================================================================== */
.breadcrumb { background: var(--bg-light); padding: 14px 0; color: var(--text-muted); font-size: 13px; }
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--primary); }

/* ===================================================================
   侧边栏 Sidebar
   =================================================================== */
.sidebar { float: left; width: 240px; }
.sidebar-block { background: #fff; border-radius: 6px; overflow: hidden; box-shadow: 0 2px 8px rgba(0,0,0,.04); margin-bottom: 20px; }
.sidebar-title {
  background: var(--primary); color: #fff; padding: 14px 20px; font-size: 16px; font-weight: 500;
  display: flex; align-items: center;
}
.sidebar-title i { margin-right: 8px; }
.sidebar-nav li { border-bottom: 1px solid var(--border); }
.sidebar-nav li > a { display: flex; align-items: center; padding: 12px 20px; color: var(--text-body); font-size: 14px; transition: all .3s; }
.sidebar-nav li > a i { margin-left: auto; color: var(--text-muted); }
.sidebar-nav li.active > a { background: var(--bg-light); color: var(--primary); border-left: 3px solid var(--primary); padding-left: 17px; }
.sidebar-nav li.has-sub > a i { color: var(--primary); transform: rotate(90deg); }
.sidebar-nav li.has-sub > a { color: var(--primary); }
.sidebar-sub { background: var(--bg-light); }
.sidebar-sub li a { padding: 10px 20px 10px 40px; font-size: 13px; }
.sidebar-contact { padding: 24px 20px; text-align: center; }
.sidebar-tel { color: var(--accent); font-size: 22px; font-weight: 700; margin-bottom: 8px; }
.sidebar-tip { color: var(--text-muted); font-size: 12px; }
.sidebar-hot { padding: 12px 20px; }
.sidebar-hot li { padding: 10px 0; border-bottom: 1px dashed var(--border); }
.sidebar-hot li:last-child { border-bottom: none; }
.sidebar-hot li a { display: flex; align-items: center; color: var(--text-body); font-size: 13px; }
.sidebar-hot li .hot-num {
  display: inline-flex; align-items: center; justify-content: center; width: 18px; height: 18px;
  background: var(--text-muted); color: #fff; font-size: 11px; border-radius: 2px; margin-right: 8px; flex-shrink: 0;
}
.sidebar-hot li:nth-child(1) .hot-num { background: #e74c3c; }
.sidebar-hot li:nth-child(2) .hot-num { background: #f39c12; }
.sidebar-hot li:nth-child(3) .hot-num { background: #f1c40f; }
.sidebar-hot li h4 { flex: 1; font-weight: 400; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* ===================================================================
   主内容 Main
   =================================================================== */
.main-content { float: right; width: 920px; background: #fff; border-radius: 6px; padding: 30px; box-shadow: 0 2px 8px rgba(0,0,0,.04); min-height: 600px; }

/* ===================================================================
   产品详情
   =================================================================== */
.product-info { padding-bottom: 30px; border-bottom: 1px solid var(--border); }
.product-info-img { float: left; width: 400px; }
.product-main-img { width: 100%; height: 400px; border: 1px solid var(--border); border-radius: 4px; overflow: hidden; display: flex; align-items: center; justify-content: center; background: #fff; }
.product-main-img img { max-width: 100%; max-height: 100%; }
.product-thumbs { margin-top: 12px; display: flex; }
.product-thumbs .thumb { width: 70px; height: 70px; margin-right: 8px; border: 1px solid var(--border); border-radius: 4px; cursor: pointer; overflow: hidden; }
.product-thumbs .thumb img { width: 100%; height: 100%; object-fit: cover; }
.product-info-text { margin-left: 430px; }
.product-title { font-size: 22px; color: var(--text-title); line-height: 1.4; font-weight: 600; margin-bottom: 16px; }
.product-params { background: var(--bg-light); padding: 16px 20px; border-radius: 4px; margin-bottom: 24px; }
.product-params li { padding: 6px 0; font-size: 14px; color: var(--text-body); border-bottom: 1px dashed var(--border); }
.product-params li:last-child { border-bottom: none; }
.product-params li span { color: var(--text-muted); margin-right: 10px; min-width: 80px; display: inline-block; }
.product-actions { margin-bottom: 20px; }
.product-actions .btn { margin-right: 12px; padding: 12px 36px; font-size: 15px; }
.product-share { padding-top: 16px; border-top: 1px solid var(--border); font-size: 13px; color: var(--text-muted); }
.product-share a { margin-left: 10px; padding: 2px 12px; border: 1px solid var(--border); border-radius: 30px; color: var(--text-body); }
.product-share a:hover { background: var(--primary); color: #fff; border-color: var(--primary); }

.product-tab-bar { margin-top: 30px; border-bottom: 2px solid var(--primary); }
.product-tab-bar .product-tab-nav li { float: left; margin-right: 4px; }
.product-tab-bar .product-tab-nav li a { display: block; padding: 12px 24px; color: var(--text-body); font-size: 15px; border: 1px solid var(--border); border-bottom: none; border-radius: 4px 4px 0 0; }
.product-tab-bar .product-tab-nav li.active a { background: var(--primary); color: #fff; border-color: var(--primary); }
.product-content { padding: 30px 0; min-height: 200px; }
.product-content img { max-width: 100%; }
.param-table { width: 100%; border-collapse: collapse; }
.param-table th, .param-table td { padding: 10px 14px; border: 1px solid var(--border); font-size: 14px; }
.param-table th { background: var(--bg-light); color: var(--text-body); text-align: left; width: 140px; }
.param-table td { color: var(--text-body); }

.product-prev-next { margin-top: 30px; padding: 20px; background: var(--bg-light); border-radius: 4px; }
.product-prev-next .prev, .product-prev-next .next { color: var(--text-body); font-size: 14px; }
.product-prev-next .prev:hover, .product-prev-next .next:hover { color: var(--primary); }
.product-prev-next .prev { float: left; }
.product-prev-next .next { float: right; }
.related-product { margin-top: 40px; padding-top: 30px; border-top: 1px solid var(--border); }

/* ===================================================================
   分页
   =================================================================== */
.pagination { text-align: center; padding: 30px 0 10px; }
.page-item {
  display: inline-block; padding: 8px 16px; margin: 0 3px; border: 1px solid var(--border); border-radius: 4px;
  color: var(--text-body); font-size: 13px; transition: all .3s;
}
.page-item:hover, .page-item.current { background: var(--primary); color: #fff; border-color: var(--primary); }
.page-num { padding: 6px 12px; margin: 0 2px; border-radius: 4px; color: var(--text-body); }
.page-num-current { background: var(--primary); color: #fff; }

/* ===================================================================
   联系我们
   =================================================================== */
.contact-info { float: left; width: 460px; padding-right: 40px; }
.contact-list { margin-top: 20px; }
.contact-list li { padding: 12px 0; color: var(--text-body); font-size: 14px; line-height: 1.6; border-bottom: 1px dashed var(--border); }
.contact-list li i { color: var(--primary); margin-right: 8px; }
.contact-list li strong { color: var(--text-title); font-weight: 500; }
.contact-form { float: right; width: 600px; background: #fff; padding: 40px; border-radius: 6px; box-shadow: 0 4px 12px rgba(0,0,0,.06); }
.contact-form h3 { font-size: 22px; color: var(--text-title); margin-bottom: 24px; }
.contact-form h3 small { color: var(--text-muted); font-size: 13px; letter-spacing: 2px; }
.form-group { margin-bottom: 16px; }
.form-row .form-group { float: left; width: 48%; }
.form-row .form-group:nth-child(2) { float: right; }
.form-group label { display: block; color: var(--text-body); font-size: 14px; margin-bottom: 6px; }
.form-group label span { color: #e74c3c; }
.form-group input, .form-group textarea, .form-group select {
  width: 100%; padding: 10px 14px; border: 1px solid var(--border); border-radius: 4px; font-size: 14px;
  background: #fff; transition: all .3s;
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus { border-color: var(--primary); }
.form-group textarea { height: 110px; resize: vertical; }
.form-captcha { float: left; width: 50%; position: relative; }
.form-captcha input { padding-right: 90px; }
.form-captcha img { position: absolute; right: 4px; top: 4px; height: 30px; cursor: pointer; }
.form-submit { float: right; padding: 12px 40px; background: var(--primary); color: #fff; border-radius: 4px; cursor: pointer; font-size: 15px; transition: all .3s; }
.form-captcha-wrap { display: flex; align-items: center; }
.form-captcha-wrap .form-captcha { flex: 1; }
.form-submit:hover { background: var(--accent); }

/* ===================================================================
   搜索页
   =================================================================== */
.search-bar { background: #fff; padding: 24px; border-radius: 6px; box-shadow: 0 2px 8px rgba(0,0,0,.05); margin-bottom: 30px; }
.search-bar-fields { display: flex; }
.search-field { margin-right: 8px; }
.search-field input, .search-field select {
  height: 42px; padding: 0 14px; border: 1px solid var(--border); border-radius: 4px; font-size: 14px; min-width: 200px;
}
.search-field input { width: 360px; }
.search-field input:focus, .search-field select:focus { border-color: var(--primary); }
.search-submit { padding: 0 36px; height: 42px; background: var(--primary); color: #fff; border-radius: 4px; cursor: pointer; font-size: 15px; transition: all .3s; }
.search-submit:hover { background: var(--accent); }
.search-result-info { padding: 12px 0; color: var(--text-body); font-size: 14px; }
.search-result-info strong { color: var(--accent); font-size: 18px; margin: 0 4px; }
.search-result-info em { color: var(--primary); font-style: normal; font-weight: 500; }
.search-result-list { }
.search-result-item { background: #fff; padding: 24px; border-radius: 6px; margin-bottom: 16px; box-shadow: 0 2px 6px rgba(0,0,0,.04); transition: all .3s; }
.search-result-item:hover { box-shadow: var(--shadow); }
.search-result-item h3 { font-size: 17px; color: var(--text-title); margin-bottom: 8px; font-weight: 500; }
.search-result-item h3 a { color: var(--text-title); }
.search-result-item h3 a:hover { color: var(--primary); }
.search-result-item h3 em { color: #e74c3c; font-style: normal; font-weight: 700; }
.search-result-desc { color: var(--text-body); font-size: 14px; line-height: 1.7; margin-bottom: 10px; }
.search-result-meta { color: var(--text-muted); font-size: 12px; }
.search-result-meta span { margin-right: 16px; }
.result-sort { padding: 2px 8px; background: var(--bg-light); color: var(--primary); border-radius: 2px; }
.result-link { float: right; color: var(--primary); }

.search-empty { background: #fff; padding: 60px 30px; text-align: center; border-radius: 6px; box-shadow: 0 2px 6px rgba(0,0,0,.04); }
.search-empty > i { font-size: 60px; color: var(--text-muted); display: block; margin-bottom: 16px; }
.search-empty p { color: var(--text-body); font-size: 15px; margin-bottom: 8px; }
.search-empty em { color: var(--primary); font-style: normal; font-weight: 500; }
.search-tip { color: var(--text-muted) !important; font-size: 13px !important; }
.search-hot-tag { margin-top: 30px; }
.search-hot-tag span { color: var(--text-muted); margin-right: 8px; }
.search-hot-tag a { display: inline-block; margin: 4px; padding: 4px 14px; background: var(--bg-light); border-radius: 30px; color: var(--text-body); font-size: 13px; }
.search-hot-tag a:hover { background: var(--primary); color: #fff; }

/* ===================================================================
   友情链接
   =================================================================== */
.friendly-link { background: var(--bg-light); padding: 20px 0; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.friendly-title { color: var(--text-title); font-size: 14px; margin-bottom: 10px; font-weight: 500; }
.friendly-title small { color: var(--text-muted); font-size: 12px; }
.friendly-list a { display: inline-block; margin: 4px 14px 4px 0; color: var(--text-muted); font-size: 13px; }
.friendly-list a:hover { color: var(--primary); }

/* ===================================================================
   底部 Footer
   =================================================================== */
.footer { background: linear-gradient(180deg, #1a2a44 0%, #0f1c30 100%); color: #9ca3af; padding-top: 50px; }
.footer-grid { display: flex; }
.footer-col { flex: 1; padding: 0 20px; }
.footer-col-1 { flex: 1.5; }
.footer-col-4 { flex: 1; }
.footer h4 { color: #fff; font-size: 16px; margin-bottom: 18px; font-weight: 500; position: relative; padding-left: 12px; }
.footer h4::before { content: ""; position: absolute; left: 0; top: 4px; bottom: 4px; width: 3px; background: var(--primary); }
.footer-contact li { padding: 6px 0; font-size: 13px; }
.footer-contact li i { margin-right: 6px; color: var(--primary); }
.footer-nav li { padding: 6px 0; }
.footer-nav a { color: #9ca3af; font-size: 13px; }
.footer-nav a:hover { color: #fff; }
.footer-desc { font-size: 13px; line-height: 1.6; margin-bottom: 12px; }
.footer-qr { width: 110px; height: 110px; padding: 6px; background: #fff; border-radius: 4px; }
.footer-qr img { width: 100%; height: 100%; }

.footer-bottom { margin-top: 30px; padding: 16px 0; border-top: 1px solid rgba(255,255,255,.06); color: #6b7280; font-size: 12px; }
.footer-bottom a { color: #6b7280; }
.footer-bottom a:hover { color: #fff; }
.copyright { float: left; }
.footer-tools { float: right; }
.footer-tools a { margin-left: 16px; }

/* ===================================================================
   侧边悬浮工具栏
   =================================================================== */
.floater { position: fixed; right: 16px; bottom: 80px; z-index: 99; opacity: 0; visibility: hidden; transition: all .3s; }
.floater.show { opacity: 1; visibility: visible; }
.floater-item {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  width: 56px; height: 56px; margin-bottom: 6px; background: var(--primary); color: #fff; border-radius: 4px;
  cursor: pointer; position: relative; font-size: 12px; transition: all .3s;
}
.floater-item i { font-size: 22px; }
.floater-item span { margin-top: 2px; }
.floater-item:hover { background: var(--accent); }
.floater-top { background: var(--primary-dark); }
.floater-pop {
  position: absolute; right: 64px; top: 0; width: 180px; background: #fff; box-shadow: 0 4px 12px rgba(0,0,0,.12);
  padding: 14px; border-radius: 4px; color: var(--text-body); font-size: 12px; display: none;
}
.floater-item:hover .floater-pop { display: block; }
.floater-pop h5 { color: var(--text-title); font-size: 13px; margin-bottom: 6px; }
.floater-pop p { color: var(--accent); font-size: 16px; font-weight: 600; margin: 4px 0; }
.floater-pop small { color: var(--text-muted); }
.floater-pop img { width: 100%; margin-top: 6px; }
.floater-pop-btn { display: block; margin-top: 8px; padding: 6px; background: var(--primary); color: #fff; text-align: center; border-radius: 3px; }
.floater-pop-btn:hover { background: var(--accent); color: #fff; }

/* ===================================================================
   响应式
   =================================================================== */
/* ===================================================================
   搜索结果页
   =================================================================== */
.search-bar { margin-bottom: 30px; }
.search-bar-fields { display: flex; gap: 12px; }
.search-field { flex: 1; }
.search-field input { width: 100%; padding: 12px 16px; border: 2px solid var(--border); border-radius: 4px; font-size: 14px; }
.search-field input:focus { border-color: var(--primary); }
.search-submit { padding: 0 32px; background: var(--primary); color: #fff; border-radius: 4px; font-size: 14px; cursor: pointer; transition: all .3s; }
.search-submit:hover { background: var(--accent); }
.search-result-info { margin-bottom: 20px; font-size: 14px; color: var(--text-body); }
.search-result-info strong { color: var(--primary); font-weight: 600; }
.search-product-grid { display: flex; flex-wrap: wrap; margin: 0 -10px; }
.search-product-item { width: 25%; padding: 0 10px; margin-bottom: 20px; }
.search-product-item a { display: block; background: #fff; border-radius: 6px; overflow: hidden; transition: all .3s; box-shadow: 0 2px 6px rgba(0,0,0,.05); }
.search-product-item a:hover { transform: translateY(-4px); box-shadow: 0 12px 24px rgba(16,68,146,.15); }
.search-product-img { width: 100%; height: 180px; overflow: hidden; background: #f8fafc; }
.search-product-img img { width: 100%; height: 100%; object-fit: cover; }
.search-product-info { padding: 14px; }
.search-product-info h4 { font-size: 14px; color: var(--text-title); margin-bottom: 6px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.search-product-info p { color: var(--text-muted); font-size: 12px; margin-bottom: 8px; }
.search-product-cat { display: inline-block; padding: 2px 8px; background: var(--bg-gray); color: var(--text-muted); font-size: 12px; border-radius: 3px; }
.search-empty { text-align: center; padding: 60px 0; }
.search-empty p { margin-bottom: 8px; color: var(--text-body); }
.search-empty em { color: var(--primary); font-style: normal; }
.search-tip { color: var(--text-muted); font-size: 13px !important; }
.search-hot-tag { margin-top: 20px; }
.search-hot-tag span { color: var(--text-muted); font-size: 13px; }
.search-hot-tag a { display: inline-block; padding: 4px 12px; margin: 0 6px; background: var(--bg-light); color: var(--text-body); font-size: 13px; border-radius: 12px; }
.search-hot-tag a:hover { background: var(--primary); color: #fff; }

@media (max-width: 1280px) {
  .container { width: 100%; }
  .header-search { width: 320px; }
}
@media (max-width: 1024px) {
  body { min-width: 100%; }
  .container { width: 100%; padding: 0 16px; }
  .header-search { display: none; }
  .nav-list > li > a { padding: 0 16px; }
}