/* ============ 设计变量（IT 科技风） ============ */
:root{
  --blue:#0b2447;        /* 深蓝主背景 */
  --blue-deep:#071931;
  --blue2:#1e6fff;       /* 科技蓝主色 */
  --cyan:#21d4fd;        /* 青色点缀 */
  --text:#1a2233;
  --muted:#6b7688;
  --bg:#f4f8ff;
  --line:#e3ebf7;
  --white:#ffffff;
  --shadow:0 10px 30px rgba(11,36,71,.08);
}
*{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:1.7;font-size:15px;
}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
.container{max-width:1200px;margin:0 auto;padding:0 20px;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(11,36,71,.92);backdrop-filter:blur(8px);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:64px;}
.logo{color:#fff!important;font-size:28px!important;font-weight:800!important;letter-spacing:1px;text-decoration:none!important;display:inline-block;line-height:1;}
.site-nav ul{display:flex;gap:6px;list-style:none;}
.site-nav a{display:block;color:#cdd9ee;padding:8px 14px;border-radius:6px;font-size:15px;transition:.2s;}
.site-nav a:hover{color:#fff;background:rgba(33,212,253,.12);}
.site-nav li.active a{color:#fff;background:linear-gradient(90deg,var(--blue2),var(--cyan));}
.site-nav li.nav-highlight a{
  color:#fff;
  background:linear-gradient(90deg,#ff4d4f,#ff7875);
  box-shadow:0 4px 12px rgba(255,77,79,.35);
  font-weight:700;
  animation:highlightPulse 2s infinite;
}
.site-nav li.nav-highlight a:hover{
  background:linear-gradient(90deg,#ff7875,#ff4d4f);
  transform:translateY(-1px);
}
@keyframes highlightPulse{
  0%,100%{box-shadow:0 4px 12px rgba(255,77,79,.35);}
  50%{box-shadow:0 6px 18px rgba(255,77,79,.55);}
}
.nav-toggle{display:none;}
.nav-burger{display:none;width:30px;height:24px;position:relative;cursor:pointer;}
.nav-burger span{position:absolute;left:0;width:100%;height:3px;background:#fff;border-radius:2px;transition:.3s;}
.nav-burger span:nth-child(1){top:2px;}
.nav-burger span:nth-child(2){top:11px;}
.nav-burger span:nth-child(3){top:20px;}

/* ============ 通用区块 ============ */
.section{padding:70px 0;}
.section-light{background:var(--white);}
.section-head{text-align:center;margin-bottom:46px;}
.section-head h2{font-size:32px;color:var(--blue);position:relative;display:inline-block;padding-bottom:14px;}
.section-head h2::after{content:"";position:absolute;left:50%;bottom:0;transform:translateX(-50%);width:60px;height:4px;border-radius:2px;background:linear-gradient(90deg,var(--blue2),var(--cyan));}
.section-head p{color:var(--muted);margin-top:12px;}

/* ============ 按钮 ============ */
.btn{display:inline-block;padding:12px 28px;border-radius:30px;font-weight:600;transition:.25s;cursor:pointer;border:none;}
.btn-primary{background:linear-gradient(90deg,var(--blue2),var(--cyan));color:#fff;box-shadow:0 8px 20px rgba(30,111,255,.3);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(30,111,255,.42);}
.btn-ghost{border:1px solid var(--blue2);color:var(--blue2);background:transparent;}
.btn-ghost:hover{background:var(--blue2);color:#fff;}

/* ============ 首页 Hero 轮播 ============ */
.hero{position:relative;height:520px;overflow:hidden;background:var(--blue-deep);}
.slides{position:relative;height:100%;}
.slide{position:absolute;inset:0;opacity:0;transition:opacity .8s;display:flex;align-items:center;justify-content:center;text-align:center;
  background:radial-gradient(1200px 500px at 70% 20%,rgba(33,212,253,.25),transparent),linear-gradient(135deg,var(--blue-deep),var(--blue));}
.slide.active{opacity:1;}
.slide .hero-inner{max-width:760px;padding:0 20px;}
.slide h1{color:#fff;font-size:46px;line-height:1.25;margin-bottom:18px;text-shadow:0 4px 18px rgba(0,0,0,.3);}
.slide p{color:#d6e4ff;font-size:18px;margin-bottom:28px;}
.hero-dots{position:absolute;bottom:22px;left:50%;transform:translateX(-50%);display:flex;gap:10px;z-index:5;}
.hero-dots span{width:12px;height:12px;border-radius:50%;background:rgba(255,255,255,.4);cursor:pointer;transition:.3s;}
.hero-dots span.active{background:var(--cyan);width:28px;border-radius:6px;}

/* 首页嵌入防伪查询模块 */
.home-fw-section{background:linear-gradient(180deg,#f5f9ff 0%,#eef5ff 100%);}
.home-fw-wrap{max-width:760px;margin:0 auto;}
.home-fw-card{background:#fff;border:1px solid #e3e8ef;border-top:3px solid var(--blue2);border-radius:14px;padding:34px 30px;box-shadow:0 12px 40px rgba(15,82,186,.08);}
.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:#345;font-size:14px;}
.home-fw-row input{width:100%;height:46px;padding:0 14px;border:1px solid #d6deea;border-radius:8px;font-size:15px;outline:none;transition:.15s;box-sizing:border-box;}
.home-fw-row input:focus{border-color:var(--blue2);box-shadow:0 0 0 3px rgba(30,111,255,.12);}
.home-fw-row-cap{flex-direction:row;flex-wrap:wrap;align-items:flex-end;gap:10px;}
.home-fw-row-cap label{width:100%;}
.home-fw-row-cap input{flex:1;min-width:120px;height:46px;min-height:46px;}
.home-fw-captcha-img{height:46px;min-height:46px;border-radius:8px;border:1px solid #d6deea;cursor:pointer;background:#f5f8fc;align-self:flex-start;}
.home-fw-actions{display:flex;gap:12px;justify-content:center;margin-top:8px;}

/* ============ 数据条 ============ */
.stats{background:linear-gradient(90deg,var(--blue),var(--blue-deep));color:#fff;}
.stats .container{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center;padding:40px 20px;}
.stat .num{font-size:38px;font-weight:800;background:linear-gradient(90deg,var(--cyan),#fff);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;}
.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(--white);border:1px solid var(--line);border-radius:14px;overflow:hidden;box-shadow:var(--shadow);transition:.25s;}
.card:hover{transform:translateY(-6px);box-shadow:0 18px 40px rgba(11,36,71,.14);}
.card .thumb{height:180px;background:linear-gradient(135deg,var(--blue),var(--blue2));display:flex;align-items:center;justify-content:center;color:#fff;font-size:22px;font-weight:700;}
.card .thumb img{width:100%;height:100%;object-fit:cover;}
.card .body{padding:18px 20px;}
.card .body h3{font-size:18px;color:var(--blue);margin-bottom:8px;}
.card .body p{color:var(--muted);font-size:14px;}
.card .tag{display:inline-block;font-size:12px;color:var(--blue2);background:rgba(30,111,255,.1);padding:2px 10px;border-radius:20px;margin-bottom:10px;}

/* ============ 单页内容 ============ */
.page-hero{background:linear-gradient(135deg,var(--blue-deep),var(--blue));color:#fff;padding:54px 0;text-align:center;}
.page-hero h1{font-size:34px;}
.page-hero p{color:#bcd0f0;margin-top:8px;}
.content{max-width:880px;margin:0 auto;padding:50px 20px;font-size:16px;color:#33415a;}
.tabs{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-bottom:28px;border-bottom:1px solid #e3e8ef;padding-bottom:14px;}
.tab{display:inline-block;padding:10px 22px;border:1px solid #d6deea;border-radius:6px;color:#456;background:#fff;text-decoration:none;transition:.15s;}
.tab:hover{border-color:var(--blue2);color:var(--blue2);}
.tab.active{background:var(--blue2);color:#fff;border-color:var(--blue2);}
.content h2,.content h3{color:var(--blue);margin:24px 0 12px;}
.content p{margin-bottom:14px;}
.content img{max-width:100%;border-radius:10px;margin:16px 0;}

/* ============ 联系 / 二维码 ============ */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start;}
.map-box{background:var(--white);border:1px solid var(--line);border-radius:14px;overflow:hidden;min-height:320px;display:flex;align-items:center;justify-content:center;color:var(--muted);}
.map-box iframe{width:100%;height:100%;min-height:320px;border:0;display:block;}
.contact-info{margin-top:18px;color:#33415a;line-height:2;background:var(--white);border:1px solid var(--line);border-radius:14px;padding:20px 24px;}
.contact-info p{margin:0;}
.qr-card{position:sticky;top:20px;}
.qr-card-inner{background:var(--white);border:1px solid var(--line);border-radius:14px;padding:32px 28px;box-shadow:var(--shadow);text-align:center;}
.qr-card-inner h3{color:var(--blue);font-size:22px;margin-bottom:8px;}
.qr-card-inner > p{color:var(--muted);font-size:15px;margin-bottom:22px;}
.qr-image{max-width:240px;margin:0 auto 16px;padding:14px;background:#f6f8fb;border-radius:12px;border:1px solid #e8edf3;}
.qr-image img{display:block;width:100%;height:auto;border-radius:8px;}
.qr-tip{font-size:13px;color:var(--muted);}
.qr-placeholder{max-width:240px;margin:0 auto;padding:40px 20px;background:#f6f8fb;border-radius:12px;border:1px dashed #c8d4e0;display:flex;flex-direction:column;align-items:center;gap:10px;color:var(--muted);}
.qr-placeholder small{font-size:12px;color:#9fb3cc;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:14px;color:var(--blue);margin-bottom:6px;font-weight:600;}
.field input,.field textarea,.field select{width:100%;padding:11px 14px;border:1px solid var(--line);border-radius:8px;font-size:15px;font-family:inherit;outline:none;transition:.2s;background:#fff;}
.field input:focus,.field textarea:focus,.field select:focus{border-color:var(--blue2);box-shadow:0 0 0 3px rgba(30,111,255,.12);}
.field textarea{resize:vertical;min-height:110px;}

/* ============ 留言列表（后台使用） ============ */
.msg-list{display:grid;gap:16px;}
.msg-item{background:var(--white);border:1px solid var(--line);border-radius:12px;padding:16px 20px;}
.msg-item .meta{color:var(--muted);font-size:13px;margin-bottom:6px;}

/* ============ 分页 ============ */
.pager{display:flex;justify-content:center;gap:8px;margin-top:36px;}
.pager a,.pager span{padding:8px 14px;border-radius:8px;background:var(--white);border:1px solid var(--line);color:var(--blue);}
.pager .cur{background:var(--blue2);color:#fff;border-color:var(--blue2);}

/* ============ 底部 ============ */
.site-footer{background:var(--blue-deep);color:#aebfd9;margin-top:40px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:30px;padding:50px 20px 30px;}
.footer-grid h4{color:#fff;margin-bottom:16px;font-size:16px;}
.footer-grid a{color:#aebfd9;display:block;padding:4px 0;}
.footer-grid a:hover{color:var(--cyan);}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:18px 20px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;font-size:13px;color:#7e93b8;}

/* ============ 响应式 ============ */
@media (max-width:768px){
  .nav-burger{display:block;}
  .site-nav{display:none;position:absolute;top:64px;left:0;right:0;background:var(--blue);padding:10px 20px;}
  .nav-toggle:checked ~ .site-nav{display:block;}
  .site-nav ul{flex-direction:column;gap:2px;}
  .site-nav a{padding:12px 10px;}
  .site-nav li.nav-highlight a{animation:none;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;}
  .contact-grid{grid-template-columns:1fr;}
  .qr-card{position:static;margin-top:20px;}
  .qr-card-inner{padding:24px 18px;}
  .qr-image{max-width:200px;}
  .footer-grid{grid-template-columns:1fr;}
  .section-head h2{font-size:26px;}
  .home-fw-card{padding:24px 18px;}
  .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;}
}