:root{--primary:#1a73b8;--primary-dark:#155a8e;--text:#333;--text-light:#666;--bg:#fff;--bg-gray:#f5f7fa;--border:#e5e8ed;--radius:6px;--shadow:0 2px 12px rgba(0,0,0,.08);--container:1200px}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:var(--text);background:var(--bg);line-height:1.6;font-size:14px}
a{color:var(--primary);text-decoration:none;transition:all .2s}
a:hover{color:var(--primary-dark)}
img{max-width:100%;display:block}
.container{max-width:var(--container);margin:0 auto;padding:0 20px}

.btn-primary{display:inline-block;padding:10px 28px;background:var(--primary);color:#fff!important;border-radius:var(--radius);border:none;cursor:pointer;font-size:14px}
.btn-primary:hover{background:var(--primary-dark)}
.btn-large{padding:14px 40px;font-size:16px}
.btn-block{display:block;width:100%;text-align:center}

.site-header{background:#fff;box-shadow:var(--shadow);position:sticky;top:0;z-index:100}
.header-inner{display:flex;align-items:center;height:70px;gap:30px}
.logo img{height:44px}
.logo-text{font-size:22px;font-weight:700;color:var(--primary)}
.main-nav{flex:1;display:flex;gap:24px}
.main-nav a{color:var(--text);font-size:15px;padding:6px 0;border-bottom:2px solid transparent}
.main-nav a:hover,.main-nav a.active{color:var(--primary);border-bottom-color:var(--primary)}
.header-right{display:flex;align-items:center;gap:16px}
.header-search{display:flex;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}
.header-search input{border:none;padding:6px 10px;outline:none;width:150px;font-size:13px}
.header-search button{border:none;background:var(--primary);color:#fff;padding:0 12px;cursor:pointer}
.lang-switch a{color:var(--text-light);font-size:13px;font-weight:600}
.lang-switch a.active{color:var(--primary)}
.lang-switch span{color:var(--border);margin:0 4px}

.banner-slider{position:relative;height:480px;overflow:hidden;background:#ddd}
.slides{position:relative;height:100%}
.slide-item{position:absolute;inset:0;background-size:cover;background-position:center;display:flex;align-items:center;opacity:0;transition:opacity .8s}
.slide-item.active{opacity:1}
.slide-caption{background:rgba(0,0,0,.5);color:#fff;padding:40px 50px;border-radius:var(--radius);margin-left:8%;max-width:500px}
.slide-caption h2{font-size:32px;margin-bottom:12px}
.slide-caption p{margin-bottom:20px;opacity:.9}
.slider-prev,.slider-next{position:absolute;top:50%;transform:translateY(-50%);background:rgba(0,0,0,.3);color:#fff;border:none;width:40px;height:40px;border-radius:50%;cursor:pointer;font-size:18px}
.slider-prev{left:20px}.slider-next{right:20px}
.slider-dots{position:absolute;bottom:20px;left:50%;transform:translateX(-50%);display:flex;gap:8px}
.slider-dots .dot{width:10px;height:10px;background:rgba(255,255,255,.5);border-radius:50%;cursor:pointer}
.slider-dots .dot.active{background:#fff}

.section{padding:60px 0}
.section.alt-bg{background:var(--bg-gray)}
.section-title{text-align:center;font-size:28px;margin-bottom:8px}
.section-subtitle{text-align:center;color:var(--text-light);margin-bottom:40px;font-size:15px}
.section-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:30px}
.section-header .section-title{margin-bottom:0}
.more-link{font-size:14px}

.intro-content{max-width:900px;margin:0 auto;text-align:center;color:var(--text-light);line-height:2}

.content-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.content-card{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:transform .2s;color:var(--text)}
.content-card:hover{transform:translateY(-4px);color:var(--text)}
.card-img{aspect-ratio:4/3;background:var(--bg-gray);overflow:hidden}
.card-img img{width:100%;height:100%;object-fit:cover;transition:transform .3s}
.content-card:hover .card-img img{transform:scale(1.05)}
.no-img{display:flex;align-items:center;justify-content:center;height:100%;color:var(--border);font-size:40px}
.content-card h3{padding:12px 16px 4px;font-size:15px}
.content-card p{padding:0 16px;color:var(--text-light);font-size:13px}
.card-date{display:block;padding:0 16px 16px;color:var(--text-light);font-size:12px}

.page-banner{height:240px;background-size:cover;background-position:center;background-color:var(--primary);display:flex;align-items:center;color:#fff;position:relative}
.page-banner::before{content:'';position:absolute;inset:0;background:rgba(0,0,0,.4)}
.page-banner .container{position:relative;z-index:1}
.page-banner h1{font-size:32px;margin-bottom:8px}
.page-banner p{opacity:.9}

.breadcrumb{background:var(--bg-gray);padding:12px 0;font-size:13px;color:var(--text-light)}
.breadcrumb a{color:var(--text-light)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb span{margin:0 6px}

.category-layout{display:grid;grid-template-columns:220px 1fr;gap:30px}
.category-sidebar{background:var(--bg-gray);border-radius:var(--radius);padding:20px;height:fit-content}
.category-sidebar h3{font-size:16px;padding-bottom:12px;border-bottom:2px solid var(--primary);margin-bottom:12px}
.category-sidebar ul{list-style:none}
.category-sidebar li{padding:8px 0;border-bottom:1px dashed var(--border)}
.category-sidebar li.active a{color:var(--primary);font-weight:600}
.category-sidebar li:last-child{border:none}

.category-main{min-height:400px}
.page-title{text-align:center;font-size:24px;padding-bottom:16px;border-bottom:1px solid var(--border);margin-bottom:24px}
.sub-tabs{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:20px}
.sub-tabs a{padding:6px 16px;background:var(--bg-gray);border-radius:var(--radius);color:var(--text);font-size:13px}
.sub-tabs a:hover{background:var(--primary);color:#fff}

.pagination{display:flex;justify-content:center;gap:6px;margin-top:30px}
.pagination a,.pagination span{padding:8px 14px;border:1px solid var(--border);border-radius:var(--radius);color:var(--text)}
.pagination a:hover{background:var(--bg-gray)}
.pagination .current{background:var(--primary);color:#fff;border-color:var(--primary)}

.empty-state{text-align:center;padding:80px 20px;color:var(--text-light)}
.empty-state i{font-size:60px;margin-bottom:16px;opacity:.3}

.single-content{background:#fff;padding:30px;border-radius:var(--radius);box-shadow:var(--shadow)}
.rich-text{line-height:2}
.rich-text img{max-width:100%;height:auto;border-radius:var(--radius);margin:16px auto}
.rich-text p{margin-bottom:16px}
.rich-text h2,.rich-text h3{margin:24px 0 12px}
.rich-text table{width:100%;border-collapse:collapse;margin:16px 0}
.rich-text td,.rich-text th{border:1px solid var(--border);padding:8px 12px}

.content-detail{background:#fff}
.detail-header{text-align:center;margin-bottom:24px}
.detail-header h1{font-size:26px;margin-bottom:8px}
.detail-header .subtitle{color:var(--text-light)}
.article-meta{display:flex;justify-content:center;gap:20px;color:var(--text-light);font-size:13px;margin-top:12px}
.detail-cover{margin:20px auto;max-width:800px}
.detail-cover img{width:100%;border-radius:var(--radius)}
.product-info{background:var(--bg-gray);padding:20px;border-radius:var(--radius);margin-bottom:24px}
.product-info p{padding:4px 0}
.product-gallery{margin:30px 0}
.gallery-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:12px}
.gallery-item{aspect-ratio:1;border-radius:var(--radius);overflow:hidden;border:1px solid var(--border)}
.gallery-item img{width:100%;height:100%;object-fit:cover}
.content-body{max-width:900px;margin:0 auto;padding:20px 0;line-height:2}
.inquiry-box{text-align:center;margin:30px 0}
.related-content{border-top:1px solid var(--border);padding-top:20px;margin-top:30px}
.related-content h3{margin-bottom:12px}
.related-content ul{list-style:none}
.related-content li{padding:6px 0}
.related-content li::before{content:'• ';color:var(--primary)}

.search-box{display:flex;max-width:500px;margin:0 auto 30px;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}
.search-box input{flex:1;border:none;padding:12px 16px;outline:none;font-size:14px}
.search-box button{padding:0 24px;border:none;background:var(--primary);color:#fff;cursor:pointer}

.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px}
.info-list{list-style:none}
.info-list li{display:flex;gap:16px;padding:16px 0;border-bottom:1px solid var(--border)}
.info-list i{color:var(--primary);font-size:20px;margin-top:4px}
.info-list strong{display:block;margin-bottom:4px}
.info-list p{color:var(--text-light)}
.contact-form-box{background:#fff;padding:30px;border-radius:var(--radius);box-shadow:var(--shadow)}
.contact-form p{margin-bottom:14px}
.contact-form label{display:block;margin-bottom:4px;font-weight:600}
.contact-form input,.contact-form textarea{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:var(--radius);font-size:14px;outline:none}
.contact-form input:focus,.contact-form textarea:focus{border-color:var(--primary)}
.contact-form textarea{min-height:120px;resize:vertical}
.alert{padding:12px 16px;border-radius:var(--radius);margin-bottom:16px}
.alert-success{background:#d4edda;color:#155724}
.alert-error{background:#f8d7da;color:#721c24}

.site-footer{background:#2a2f3a;color:#b8bdc7;padding:50px 0 20px;margin-top:40px}
.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:30px;margin-bottom:30px}
.footer-col h4{color:#fff;margin-bottom:16px;font-size:16px}
.footer-col p{margin-bottom:8px;font-size:13px}
.footer-col a{color:#b8bdc7}
.footer-col a:hover{color:#fff}
.qr-code{width:100px;height:100px;border-radius:var(--radius)}
.footer-bottom{text-align:center;padding-top:20px;border-top:1px solid #3a4150;font-size:13px}

@media(max-width:992px){
.content-grid{grid-template-columns:repeat(2,1fr)}
.footer-grid{grid-template-columns:repeat(2,1fr)}
.category-layout{grid-template-columns:1fr}
.gallery-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
.header-inner{flex-wrap:wrap;height:auto;padding:12px 0}
.main-nav{order:3;width:100%;overflow-x:auto;gap:16px}
.header-search input{width:120px}
.banner-slider{height:320px}
.slide-caption{padding:20px;margin-left:5%;max-width:90%}
.slide-caption h2{font-size:22px}
.content-grid,.footer-grid,.contact-grid{grid-template-columns:1fr}
.section-title{font-size:22px}
}

/* ===== 顶部面包屑条 ===== */
.breadcrumb-bar{background:var(--bg-gray);padding:10px 0;font-size:13px;color:var(--text-light)}
.breadcrumb-bar a{color:var(--text-light)}
.breadcrumb-bar a:hover{color:var(--primary)}
.breadcrumb-bar .sep{margin:0 8px;color:var(--border)}
.breadcrumb-bar .current{color:var(--text)}

/* ===== 移动端导航按钮 ===== */
.nav-toggle{display:none;background:none;border:none;font-size:22px;color:var(--text);cursor:pointer;margin-left:auto}

/* ===== 新闻列表 ===== */
.news-list{display:flex;flex-direction:column;gap:20px}
.news-item{display:flex;gap:20px;padding:20px;background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);transition:transform .2s}
.news-item:hover{transform:translateY(-2px)}
.news-thumb{flex-shrink:0;width:200px;aspect-ratio:4/3;border-radius:var(--radius);overflow:hidden}
.news-thumb img{width:100%;height:100%;object-fit:cover}
.news-body{flex:1}
.news-body h3{font-size:17px;margin-bottom:8px}
.news-body h3 a{color:var(--text)}
.news-body h3 a:hover{color:var(--primary)}
.news-desc{color:var(--text-light);font-size:13px;margin-bottom:8px;line-height:1.8}
.news-meta{display:flex;gap:16px;color:var(--text-light);font-size:12px}
.news-meta i{margin-right:4px}
.badge{display:inline-block;padding:2px 8px;border-radius:3px;font-size:11px;color:#fff;margin-right:6px;vertical-align:middle}
.badge-top{background:#e74c3c}
.badge-rec{background:#e67e22}

/* ===== 产品列表 ===== */
.product-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.product-card{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:transform .2s;color:var(--text)}
.product-card:hover{transform:translateY(-4px)}
.product-img{aspect-ratio:1;background:var(--bg-gray);overflow:hidden}
.product-img img{width:100%;height:100%;object-fit:cover;transition:transform .3s}
.product-card:hover .product-img img{transform:scale(1.05)}
.product-info-block{padding:12px 16px}
.product-info-block h3{font-size:15px;margin-bottom:4px}
.product-info-block p{font-size:13px;color:var(--text-light)}

/* ===== 案例列表 ===== */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.case-card{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:transform .2s;color:var(--text);text-align:center}
.case-card:hover{transform:translateY(-4px)}
.case-img{aspect-ratio:4/3;overflow:hidden;position:relative;background:var(--bg-gray)}
.case-img img{width:100%;height:100%;object-fit:cover;transition:transform .3s}
.case-card:hover .case-img img{transform:scale(1.08)}
.case-overlay{position:absolute;inset:0;background:rgba(0,0,0,.4);display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .3s}
.case-card:hover .case-overlay{opacity:1}
.case-overlay i{color:#fff;font-size:28px}
.case-card h3{padding:12px 16px 4px;font-size:15px}
.case-date{display:block;padding:0 16px 14px;color:var(--text-light);font-size:12px}

/* ===== 招聘列表 ===== */
.job-list{display:flex;flex-direction:column;gap:16px}
.job-card{background:#fff;padding:24px;border-radius:var(--radius);box-shadow:var(--shadow);border-left:4px solid var(--primary)}
.job-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px}
.job-header h3{font-size:17px}
.job-header h3 a{color:var(--text)}
.job-header h3 a:hover{color:var(--primary)}
.job-date{color:var(--text-light);font-size:13px}
.job-desc{color:var(--text-light);font-size:13px;margin-bottom:12px;line-height:1.8}
.btn-outline{display:inline-block;padding:6px 16px;border:1px solid var(--primary);color:var(--primary);border-radius:var(--radius);font-size:13px}
.btn-outline:hover{background:var(--primary);color:#fff}
.btn-sm{padding:4px 12px;font-size:12px}

/* ===== 证书列表 ===== */
.certificate-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.certificate-card{text-align:center;color:var(--text)}
.certificate-img{aspect-ratio:3/4;background:var(--bg-gray);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);margin-bottom:10px;border:1px solid var(--border)}
.certificate-img img{width:100%;height:100%;object-fit:cover}
.certificate-card p{font-size:13px;color:var(--text-light)}

/* ===== 产品详情 ===== */
.product-detail-top{display:grid;grid-template-columns:1fr 1fr;gap:40px;margin-bottom:40px}
.product-gallery-main .main-img{aspect-ratio:1;background:var(--bg-gray);border-radius:var(--radius);overflow:hidden;margin-bottom:12px;border:1px solid var(--border)}
.product-gallery-main .main-img img{width:100%;height:100%;object-fit:contain}
.thumb-list{display:flex;gap:8px;flex-wrap:wrap}
.thumb{width:70px;height:70px;border-radius:4px;overflow:hidden;border:2px solid var(--border);cursor:pointer}
.thumb.active{border-color:var(--primary)}
.thumb img{width:100%;height:100%;object-fit:cover}
.product-detail-info h1{font-size:24px;margin-bottom:8px}
.product-detail-info .subtitle{color:var(--text-light);margin-bottom:16px}
.product-specs{background:var(--bg-gray);padding:16px 20px;border-radius:var(--radius);margin-bottom:16px}
.product-specs dl{display:flex;margin-bottom:8px}
.product-specs dt{width:80px;color:var(--text-light);font-weight:600}
.product-specs dd{flex:1}
.product-short-desc{padding:12px 0;border-top:1px dashed var(--border);border-bottom:1px dashed var(--border);margin-bottom:20px}
.product-actions{margin-top:20px}
.product-detail-body{border-top:2px solid var(--primary);padding-top:20px}
.product-detail-body .section-title{text-align:left;font-size:20px;border:none;margin-bottom:16px}

/* ===== 上/下一篇导航 ===== */
.prev-next{display:flex;justify-content:space-between;gap:20px;margin:30px 0;padding:20px 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.prev-link,.next-link{flex:1;display:flex;flex-direction:column;gap:4px}
.next-link{text-align:right}
.prev-link .label,.next-link .label{font-size:12px;color:var(--text-light)}
.prev-link .title,.next-link .title{font-size:14px;color:var(--text)}
.prev-link:hover .title,.next-link:hover .title{color:var(--primary)}

/* ===== 相关内容网格 ===== */
.related-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:16px;margin-top:16px}
.related-card{text-align:center;color:var(--text)}
.related-img{aspect-ratio:1;background:var(--bg-gray);border-radius:var(--radius);overflow:hidden;margin-bottom:8px}
.related-img img{width:100%;height:100%;object-fit:cover}
.related-card p{font-size:12px}

/* ===== 文章标签 ===== */
.article-tags{padding:16px 0;border-top:1px solid var(--border);margin-top:20px}
.article-tags .label{color:var(--text-light);font-size:13px;margin-right:8px}
.article-tags .tag{display:inline-block;padding:4px 10px;background:var(--bg-gray);border-radius:3px;font-size:12px;color:var(--text-light);margin-right:6px}

/* ===== 首页产品展示区 ===== */
.home-showcase{background:#fff;padding:50px 0}
.showcase-header{text-align:center;margin-bottom:36px}
.showcase-title{font-size:26px;color:var(--text);margin-bottom:8px;font-weight:700}
.showcase-subtitle{font-size:14px;color:var(--text-light)}
.showcase-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.showcase-card{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:transform .3s,box-shadow .3s}
.showcase-card:hover{transform:translateY(-6px);box-shadow:0 6px 20px rgba(0,0,0,.12)}
.showcase-media{position:relative;aspect-ratio:4/3;background:var(--bg-gray);overflow:hidden}
.showcase-video,.showcase-img{width:100%;height:100%;object-fit:cover;display:block}
.showcase-video{background:#000}
.showcase-play-icon{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);font-size:40px;color:rgba(255,255,255,.8);pointer-events:none;text-shadow:0 2px 8px rgba(0,0,0,.5)}
.showcase-media:hover .showcase-play-icon{color:#fff;font-size:48px;transition:all .2s}
.showcase-card:hover .showcase-img{transform:scale(1.05)}
.showcase-no-img{display:flex;align-items:center;justify-content:center;height:100%;color:var(--border);font-size:40px}
.showcase-badge-new{position:absolute;top:8px;right:8px;background:#e74c3c;color:#fff;font-size:11px;padding:2px 8px;border-radius:3px;font-weight:600;animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.7}}
.showcase-body{padding:14px 18px}
.showcase-name{font-size:15px;margin-bottom:6px;font-weight:600}
.showcase-name a{color:var(--text)}
.showcase-name a:hover{color:var(--primary)}
.showcase-desc{font-size:13px;color:var(--text-light);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.showcase-more{text-align:center;margin-top:36px}
.showcase-more a{display:inline-block;padding:10px 32px;border:1px solid var(--primary);color:var(--primary);border-radius:var(--radius);font-size:14px;transition:all .2s}
.showcase-more a:hover{background:var(--primary);color:#fff}

/* ===== 响应式补充 ===== */
@media(max-width:992px){
.product-grid,.case-grid{grid-template-columns:repeat(2,1fr)}
.certificate-grid{grid-template-columns:repeat(4,1fr)}
.product-detail-top{grid-template-columns:1fr}
.related-grid{grid-template-columns:repeat(3,1fr)}
.news-thumb{width:150px}
.showcase-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
.nav-toggle{display:block}
.main-nav{display:none;position:absolute;top:70px;left:0;right:0;background:#fff;flex-direction:column;padding:20px;box-shadow:var(--shadow);z-index:99}
.main-nav.show{display:flex}
.header-right{margin-left:auto}
.news-item{flex-direction:column}
.news-thumb{width:100%}
.product-grid,.case-grid,.certificate-grid,.related-grid{grid-template-columns:repeat(2,1fr)}
.showcase-grid{grid-template-columns:1fr}
.prev-next{flex-direction:column;gap:12px}
.next-link{text-align:left}
}