/* ============ 设计变量：Apple 风格 / 简洁科技 ============ */
:root{
  --primary:#0E5BC4;
  --primary-dark:#0A4699;
  --primary-soft:#E4EEFB;
  --title:#0A2640;
  --text:#16242F;
  --muted:#5E6E7C;
  --bg:#EAF1F8;
  --surface:#FFFFFF;
  --line:#D5E0EC;
  --header-bg:rgba(7,35,63,.92);
  --header-border:rgba(255,255,255,.10);
  --shadow:0 10px 34px rgba(10,38,64,.08);
  --shadow-hover:0 20px 50px rgba(10,38,64,.14);
  --radius:18px;
  --radius-sm:12px;
}
*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Roboto,Helvetica,Arial,sans-serif;
  color:var(--text);background:var(--bg);line-height:1.65;font-size:15px;
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
.container{max-width:1200px;margin:0 auto;padding:0 24px;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:50;
  background:var(--header-bg);backdrop-filter:blur(16px) saturate(180%);-webkit-backdrop-filter:blur(16px) saturate(180%);
  border-bottom:1px solid var(--header-border);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:64px;}
.logo{color:#fff!important;font-size:24px;font-weight:700;letter-spacing:-.02em;text-decoration:none!important;display:inline-block;line-height:1;}
.site-nav ul{display:flex;gap:4px;list-style:none;align-items:center;}
.site-nav a{display:block;color:rgba(255,255,255,.88);padding:8px 16px;border-radius:999px;font-size:15px;font-weight:500;transition:.2s;}
.site-nav a:hover{color:#fff;background:rgba(255,255,255,.10);}
.site-nav li.active a{background:rgba(255,255,255,.15);color:#fff;font-weight:600;}
.site-nav li.nav-highlight a{
  background:var(--primary);color:#fff;
  box-shadow:0 4px 14px rgba(0,113,227,.28);
  font-weight:600;
}
.site-nav li.nav-highlight a:hover{
  background:var(--primary-dark);transform:translateY(-1px);
  box-shadow:0 6px 18px rgba(0,113,227,.35);
}
.nav-toggle{display:none;}
.nav-burger{display:none;width:28px;height:22px;position:relative;cursor:pointer;}
.nav-burger span{position:absolute;left:0;width:100%;height:2px;background:#fff;border-radius:2px;transition:.3s;}
.nav-burger span:nth-child(1){top:2px;}
.nav-burger span:nth-child(2){top:10px;}
.nav-burger span:nth-child(3){top:18px;}

/* ============ 通用区块 ============ */
.section{padding:80px 0;}
.section-light{background:var(--surface);}
.section-head{text-align:center;margin-bottom:52px;}
.section-head h2{font-size:32px;color:var(--title);font-weight:700;letter-spacing:-.02em;}
.section-head p{color:var(--muted);margin-top:10px;font-size:17px;}

/* ============ 按钮 ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:12px 28px;border-radius:999px;font-weight:600;transition:.25s;cursor:pointer;border:none;font-size:15px;font-family:inherit;}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 6px 18px rgba(0,113,227,.25);}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:0 10px 28px rgba(0,113,227,.35);}
.btn-ghost{border:1.5px solid var(--primary);color:var(--primary);background:transparent;}
.btn-ghost:hover{background:var(--primary);color:#fff;}
.btn-sm{padding:8px 18px;font-size:14px;}

/* ============ 首页 Hero 轮播 ============ */
.hero{position:relative;height:520px;overflow:hidden;background:linear-gradient(135deg,#07233F 0%,#0E3E73 55%,#0A2E62 100%);}
.slides{position:relative;height:100%;}
.slide{position:absolute;inset:0;opacity:0;transition:opacity .8s;display:flex;align-items:flex-end;justify-content:center;text-align:center;padding-bottom:90px;}
.slide::before{content:"";position:absolute;inset:0;background:rgba(0,0,0,.35);z-index:0;}
.slide > *{position:relative;z-index:1;}
.slide.active{opacity:1;}
.slide .hero-inner{max-width:760px;padding:0 24px;padding-bottom:10px;}
.slide h1{color:#fff;font-size:48px;line-height:1.15;margin-bottom:16px;font-weight:700;letter-spacing:-.02em;text-shadow:0 4px 20px rgba(0,0,0,.25);}
.slide p{color:rgba(255,255,255,.88);font-size:18px;margin-bottom:30px;}
.hero-dots{position:absolute;bottom:24px;left:50%;transform:translateX(-50%);display:flex;gap:10px;z-index:5;}
.hero-dots span{width:10px;height:10px;border-radius:50%;background:rgba(255,255,255,.4);cursor:pointer;transition:.3s;}
.hero-dots span.active{background:#fff;width:28px;border-radius:5px;}

/* 首页嵌入防伪查询模块 */
.home-fw-section{background:var(--bg);}
.home-fw-wrap{max-width:720px;margin:0 auto;}
.home-fw-card{background:var(--surface);border:1px solid var(--line);border-top:4px solid var(--primary);border-radius:var(--radius);padding:40px;box-shadow:var(--shadow);}
.home-fw-form{display:flex;flex-direction:column;gap:20px;}
.home-fw-row{display:flex;flex-direction:column;gap:8px;}
.home-fw-row label{font-weight:600;color:var(--title);font-size:14px;}
.home-fw-row input{width:100%;height:50px;padding:0 16px;border:1px solid var(--line);border-radius:var(--radius-sm);font-size:15px;outline:none;transition:.2s;box-sizing:border-box;background:#fff;}
.home-fw-row input:focus{border-color:var(--primary);box-shadow:0 0 0 4px var(--primary-soft);}
.home-fw-row-cap{flex-direction:row;flex-wrap:wrap;align-items:flex-end;gap:12px;}
.home-fw-row-cap label{width:100%;}
.home-fw-row-cap input{flex:1;min-width:120px;height:50px;min-height:50px;}
.home-fw-captcha-img{height:50px;min-height:50px;border-radius:var(--radius-sm);border:1px solid var(--line);cursor:pointer;background:var(--bg);align-self:flex-start;}
.home-fw-actions{display:flex;gap:12px;justify-content:center;margin-top:8px;}

/* ============ 数据条 ============ */
.stats{background:linear-gradient(135deg,var(--title),#123A6A);color:#fff;}
.stats .container{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center;padding:50px 20px;}
.stat .num{font-size:38px;font-weight:700;color:#fff;}
.stat .lab{color:#bcd0f0;margin-top:6px;}

/* ============ 卡片网格 ============ */
.grid{display:grid;gap:24px;}
.grid-3{grid-template-columns:repeat(3,1fr);}
.grid-2{grid-template-columns:repeat(2,1fr);}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:.3s;display:flex;flex-direction:column;}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover);}
.card .thumb{height:200px;background:linear-gradient(135deg,var(--title),#1a3b66);position:relative;overflow:hidden;display:flex;align-items:center;justify-content:center;}
.card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .6s;}
.card:hover .thumb img{transform:scale(1.06);}
.card .thumb .placeholder-text{color:rgba(255,255,255,.95);font-size:18px;font-weight:600;text-align:center;padding:0 24px;z-index:1;line-height:1.4;}
.card .body{padding:22px 24px;flex:1;display:flex;flex-direction:column;}
.card .body h3{font-size:18px;color:var(--title);margin-bottom:10px;line-height:1.45;font-weight:700;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card .body p{color:var(--muted);font-size:14px;line-height:1.65;margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card .tag{display:inline-block;font-size:12px;color:var(--primary);background:var(--primary-soft);padding:4px 12px;border-radius:999px;margin-bottom:12px;font-weight:600;align-self:flex-start;}

/* ============ 单页内容 ============ */
.page-hero{background:linear-gradient(135deg,#07233F 0%,#0E3E73 55%,#0A2E62 100%);color:#fff;padding:88px 0 52px;text-align:center;border-bottom:1px solid rgba(255,255,255,.08);}
.page-hero h1{font-size:40px;font-weight:700;letter-spacing:-.02em;color:#fff;}
.page-hero p{color:rgba(255,255,255,.75);margin-top:10px;font-size:17px;}
.content{max-width:860px;margin:0 auto;padding:56px 24px;font-size:16px;line-height:1.85;color:#33415a;}
.tabs{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-bottom:42px;}
.tab{display:inline-block;padding:10px 22px;border-radius:999px;background:var(--surface);border:1px solid var(--line);color:var(--muted);font-size:15px;font-weight:500;transition:.2s;}
.tab:hover{border-color:var(--primary);color:var(--primary);}
.tab.active{background:var(--primary);color:#fff;border-color:var(--primary);}
.content h2,.content h3{color:var(--title);margin:32px 0 14px;font-weight:700;}
.content p{margin-bottom:18px;}
.article-meta{color:var(--muted);font-size:14px;margin-bottom:22px;}
.content img{max-width:100%;border-radius:var(--radius-sm);margin:24px 0;}
.content a:not(.btn):not(.tab){color:var(--primary);border-bottom:1px solid transparent;transition:.15s;}
.content a:not(.btn):not(.tab):hover{border-bottom-color:var(--primary);}

/* ============ 联系 / 二维码 ============ */
.contact-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:44px;align-items:start;}
.map-box{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;min-height:360px;display:flex;align-items:center;justify-content:center;color:var(--muted);box-shadow:var(--shadow);}
.map-box iframe{width:100%;height:100%;min-height:360px;border:0;display:block;}
.contact-info{margin-top:20px;color:#33415a;line-height:2;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:24px;}
.contact-info p{margin:0;}
.qr-card{position:sticky;top:90px;}
.qr-card-inner{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:36px 28px;box-shadow:var(--shadow);text-align:center;}
.qr-card-inner h3{color:var(--title);font-size:22px;margin-bottom:8px;font-weight:700;}
.qr-card-inner > p{color:var(--muted);font-size:15px;margin-bottom:22px;}
.qr-image{max-width:220px;margin:0 auto 16px;padding:14px;background:var(--bg);border-radius:var(--radius-sm);border:1px solid var(--line);}
.qr-image img{display:block;width:100%;height:auto;border-radius:8px;}
.qr-tip{font-size:13px;color:var(--muted);}
.qr-placeholder{max-width:220px;margin:0 auto;padding:44px 20px;background:var(--bg);border-radius:var(--radius-sm);border:1px dashed var(--line);display:flex;flex-direction:column;align-items:center;gap:10px;color:var(--muted);}
.qr-placeholder small{font-size:12px;color:var(--muted);}
.field{margin-bottom:18px;}
.field label{display:block;font-size:14px;color:var(--title);margin-bottom:6px;font-weight:600;}
.field input,.field textarea,.field select{width:100%;padding:12px 16px;border:1px solid var(--line);border-radius:var(--radius-sm);font-size:15px;font-family:inherit;outline:none;transition:.2s;background:#fff;}
.field input:focus,.field textarea:focus,.field select:focus{border-color:var(--primary);box-shadow:0 0 0 4px var(--primary-soft);}
.field textarea{resize:vertical;min-height:120px;}

/* ============ 产品详情 ============ */
.product-detail{grid-template-columns:1.35fr 1fr;}
.product-media img{border-radius:var(--radius);box-shadow:var(--shadow);width:100%;}
.product-gallery{display:grid;grid-template-columns:repeat(3, 1fr);gap:14px;margin-top:18px;}
.product-gallery img{border-radius:var(--radius-sm);width:100%;aspect-ratio:1/1;object-fit:cover;}
.product-media > img.zoomable{margin-bottom:18px;}
.product-media img.zoomable{transition:transform .25s, box-shadow .25s;cursor:zoom-in;}
.product-media img.zoomable:hover{transform:scale(1.015);box-shadow:0 14px 36px rgba(10,38,64,.16);}
.product-info{position:sticky;top:90px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:30px;box-shadow:var(--shadow);align-self:start;}
.product-info h2{color:var(--title);font-size:24px;margin:14px 0 12px;font-weight:700;}
.product-summary{color:#33415a;font-size:15px;line-height:1.7;margin-bottom:18px;}
.product-content{color:#33415a;font-size:15px;line-height:1.8;margin-bottom:22px;}
.product-content img{border-radius:var(--radius-sm);margin:14px 0;}

/* ============ 服务介绍 ============ */
.service-summary{margin:10px 0 14px;color:var(--primary);font-weight:600;font-size:15px;}
.service-content{color:#33415a;font-size:15px;line-height:1.8;}
.service-content p{margin-bottom:12px;}

/* ============ 留言列表（后台使用） ============ */
.msg-list{display:grid;gap:16px;}
.msg-item{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-sm);padding:16px 20px;}
.msg-item .meta{color:var(--muted);font-size:13px;margin-bottom:6px;}

/* ============ 图片展示页 ============ */
.gallery-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.gallery-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:.3s;display:flex;flex-direction:column;cursor:pointer;}
.gallery-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover);}
.gallery-thumb{aspect-ratio:4/3;background:linear-gradient(135deg,var(--title),#1a3b66);overflow:hidden;}
.gallery-thumb img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .6s;}
.gallery-card:hover .gallery-thumb img{transform:scale(1.06);}
.gallery-body{padding:18px 20px;flex:1;display:flex;flex-direction:column;}
.gallery-body h3{font-size:16px;margin:0 0 8px;color:var(--title);line-height:1.4;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;font-weight:700;}
.gallery-summary{font-size:14px;color:var(--muted);line-height:1.6;margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}

/* ============ 图片灯箱 ============ */
.lightbox{position:fixed;inset:0;z-index:9999;background:rgba(11,16,26,.92);display:flex;align-items:center;justify-content:center;opacity:0;visibility:hidden;transition:opacity .25s,visibility .25s;}
.lightbox.active{opacity:1;visibility:visible;}
.lightbox-stage{position:relative;max-width:92vw;max-height:88vh;display:flex;flex-direction:column;align-items:center;}
.lightbox-stage img{max-width:100%;max-height:82vh;object-fit:contain;border-radius:var(--radius-sm);box-shadow:0 20px 60px rgba(0,0,0,.35);}
.lightbox-caption{margin-top:14px;color:#fff;font-size:15px;text-align:center;max-width:80vw;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.lightbox-close{position:absolute;top:18px;right:24px;width:44px;height:44px;border:none;background:rgba(255,255,255,.15);color:#fff;font-size:32px;line-height:1;border-radius:50%;cursor:pointer;transition:.2s;z-index:10;}
.lightbox-close:hover{background:rgba(255,255,255,.28);}
.lightbox-arrow{position:absolute;top:50%;transform:translateY(-50%);width:48px;height:48px;border:none;background:rgba(255,255,255,.15);color:#fff;font-size:20px;border-radius:50%;cursor:pointer;transition:.2s;z-index:10;display:flex;align-items:center;justify-content:center;}
.lightbox-arrow:hover{background:rgba(255,255,255,.28);}
.lightbox-prev{left:18px;}
.lightbox-next{right:18px;}

/* ============ 分页 ============ */
.pager{display:flex;justify-content:center;gap:8px;margin-top:42px;}
.pager a,.pager span{padding:10px 16px;border-radius:var(--radius-sm);background:var(--surface);border:1px solid var(--line);color:var(--text);font-weight:500;}
.pager a:hover{border-color:var(--primary);color:var(--primary);}
.pager .cur{background:var(--primary);color:#fff;border-color:var(--primary);}

/* ============ 底部 ============ */
.site-footer{background:linear-gradient(135deg,#07233F 0%,#0E3E73 55%,#0A2E62 100%);color:#bcd0f0;border-top:1px solid rgba(255,255,255,.08);}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;padding:60px 24px 40px;}
.footer-grid h4{color:#fff;margin-bottom:18px;font-size:16px;font-weight:700;}
.footer-grid a{color:#bcd0f0;display:block;padding:5px 0;transition:.2s;}
.footer-grid a:hover{color:#fff;}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:22px 24px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;font-size:13px;color:#94b8e0;}
.footer-records{display:flex;flex-wrap:wrap;gap:14px;}
.footer-records .beian{color:#94b8e0;}
.footer-records .beian a{color:#94b8e0;text-decoration:none;}
.footer-records .beian a:hover{color:#fff;text-decoration:underline;}

/* ============ 响应式 ============ */
@media (max-width:768px){
  .nav-burger{display:block;}
  .site-nav{display:none;position:absolute;top:64px;left:0;right:0;background:rgba(7,35,63,.96);padding:12px 20px;border-bottom:1px solid rgba(255,255,255,.10);box-shadow:var(--shadow);}
  .nav-toggle:checked ~ .site-nav{display:block;}
  .site-nav ul{flex-direction:column;gap:4px;align-items:stretch;}
  .site-nav a{padding:12px 14px;color:rgba(255,255,255,.88);}
  .site-nav li.active a{background:rgba(255,255,255,.15);color:#fff;}
  .site-nav li.nav-highlight a{box-shadow:none;}
  .hero{display:none;}
  .slide h1{font-size:30px;}
  .stats .container{grid-template-columns:repeat(2,1fr);}
  .grid-3,.grid-2{grid-template-columns:1fr;}
  .gallery-grid{grid-template-columns:repeat(2,1fr);gap:16px;}
  .contact-grid{grid-template-columns:1fr;}
  .qr-card{position:static;margin-top:20px;}
  .qr-card-inner{padding:28px 20px;}
  .qr-image{max-width:180px;}
  .footer-grid{grid-template-columns:1fr;}
  .section-head h2{font-size:26px;}
  .home-fw-card{padding:28px 20px;}
  .home-fw-row-cap{flex-direction:column;align-items:stretch;}
  .home-fw-row-cap input{width:100%;flex:none;}
  .home-fw-captcha-img{align-self:flex-start;margin-top:4px;}
  .page-hero h1{font-size:28px;}
  .lightbox-prev{left:8px;}
  .lightbox-next{right:8px;}
  .lightbox-close{top:10px;right:12px;}
  .lightbox-caption{font-size:13px;}
}