/* ============================================
   重庆市微佰众网络科技有限公司 · 全站公共样式
   ============================================ */
:root{
  --blue-900:#0a2540;
  --blue-800:#0d3a66;
  --blue-700:#114b85;
  --blue-600:#1660a8;
  --blue-500:#1d76cc;
  --blue-400:#3f93e0;
  --blue-100:#e3eefb;
  --blue-50:#f2f7fd;
  --ink:#1b2a3a;
  --gray:#5c6b7a;
  --line:#e4eaf1;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:"Segoe UI","PingFang SC","Microsoft YaHei",Helvetica,Arial,sans-serif;
  color:var(--ink);background:#fff;line-height:1.6;
}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
.container{max-width:1200px;margin:0 auto;padding:0 24px}

/* ---------- Top bar ---------- */
.topbar{background:var(--blue-900);color:#cfe0f2;font-size:13px;padding:7px 0}
.topbar .container{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:6px}
.topbar a{color:#cfe0f2;margin-left:18px}
.topbar a:hover{color:#fff}

/* ---------- Navbar ---------- */
header.nav{
  position:sticky;top:0;z-index:100;background:#fff;
  border-bottom:1px solid var(--line);
  box-shadow:0 2px 14px rgba(10,37,64,.06);
}
.nav .container{display:flex;align-items:center;justify-content:space-between;height:74px}
.brand{display:flex;align-items:center;gap:12px}
.brand .logo{
  width:46px;height:46px;border-radius:12px;
  background:linear-gradient(135deg,var(--blue-600),var(--blue-400));
  color:#fff;display:flex;align-items:center;justify-content:center;
  font-size:22px;font-weight:800;letter-spacing:-1px;flex:0 0 46px;
}
.brand .name{display:flex;flex-direction:column;line-height:1.25}
.brand .name b{font-size:17px;color:var(--blue-900)}
.brand .name span{font-size:11px;color:var(--gray);letter-spacing:.4px}
nav.menu{display:flex;align-items:center;gap:28px}
nav.menu a{font-size:15px;color:var(--ink);font-weight:500;position:relative;padding:6px 0}
nav.menu a::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--blue-500);transition:width .25s}
nav.menu a:hover::after{width:100%}
nav.menu a:hover{color:var(--blue-600)}
.lang-switch{display:flex;border:1px solid var(--blue-600);border-radius:20px;overflow:hidden;flex:0 0 auto}
.lang-switch button{
  border:0;background:transparent;padding:6px 16px;cursor:pointer;
  font-size:13px;font-weight:600;color:var(--blue-600);
}
.lang-switch button.active{background:var(--blue-600);color:#fff}

/* 语言区块切换 */
body.lang-en .lang-cn{display:none}
body:not(.lang-en) .lang-en{display:none}

/* ---------- Hero ---------- */
.hero{
  background:linear-gradient(115deg,rgba(10,37,64,.95) 0%,rgba(17,75,133,.90) 55%,rgba(29,118,204,.78) 100%);
  color:#fff;padding:110px 0 120px;position:relative;overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:56px 56px;pointer-events:none;
}
.hero .container{position:relative;display:grid;grid-template-columns:1.15fr .85fr;gap:60px;align-items:center}
.hero .eyebrow{
  display:inline-block;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.25);
  padding:6px 16px;border-radius:20px;font-size:13px;letter-spacing:1.5px;margin-bottom:26px;
}
.hero h1{font-size:44px;line-height:1.24;font-weight:800;letter-spacing:.5px}
.hero h1 .hl{color:#7cc0ff}
.hero p.sub{margin:24px 0 38px;font-size:18px;color:#cfe0f2;max-width:560px}
.hero .cta{display:flex;gap:16px;flex-wrap:wrap}
.btn{display:inline-block;padding:14px 34px;border-radius:8px;font-size:16px;font-weight:600;transition:transform .2s, box-shadow .2s}
.btn-primary{background:var(--blue-500);color:#fff;box-shadow:0 8px 24px rgba(29,118,204,.4)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(29,118,204,.5)}
.btn-ghost{border:1.5px solid rgba(255,255,255,.55);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.1);transform:translateY(-2px)}
.stats-card{
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.18);
  backdrop-filter:blur(8px);border-radius:16px;padding:36px 32px;
}
.stats-card .row{display:flex;justify-content:space-between;padding:14px 0;border-bottom:1px solid rgba(255,255,255,.12)}
.stats-card .row:last-child{border-bottom:0}
.stats-card .num{font-size:30px;font-weight:800;color:#7cc0ff}
.stats-card .lbl{color:#cfe0f2;font-size:14px;align-self:center;text-align:right}

/* ---------- Section base ---------- */
section{padding:90px 0}
.sec-head{text-align:center;max-width:720px;margin:0 auto 56px}
.sec-head .tag{color:var(--blue-500);font-weight:700;letter-spacing:2px;font-size:13px;text-transform:uppercase}
.sec-head h2{font-size:34px;color:var(--blue-900);margin:10px 0 14px}
.sec-head p{color:var(--gray);font-size:16px}
.sec-head .bar{width:56px;height:4px;background:linear-gradient(90deg,var(--blue-600),var(--blue-400));margin:18px auto 0;border-radius:2px}

/* ---------- Products ---------- */
#products{background:var(--blue-50)}
.prod-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.prod-card{
  background:#fff;border-radius:14px;overflow:hidden;border:1px solid var(--line);
  transition:transform .25s, box-shadow .25s;position:relative;
}
.prod-card:hover{transform:translateY(-6px);box-shadow:0 18px 40px rgba(13,58,102,.14)}
.prod-card .pic{height:260px;overflow:hidden;background:#f5f5f5}
.prod-card .pic img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.prod-card:hover .pic img{transform:scale(1.06)}
.prod-card .moq{
  position:absolute;top:12px;left:12px;background:rgba(10,37,64,.82);color:#fff;
  font-size:12px;padding:4px 10px;border-radius:20px;backdrop-filter:blur(4px);z-index:2;
}
.prod-card .body{padding:18px 20px 22px}
.prod-card h3{font-size:15px;color:var(--blue-900);margin-bottom:8px;line-height:1.45;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:43px}
.prod-card p{font-size:13px;color:var(--gray);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.prod-card .more{display:inline-block;margin-top:12px;color:var(--blue-600);font-weight:600;font-size:13px}
.prod-card .more:hover{color:var(--blue-500)}
.prod-note{text-align:center;color:var(--gray);font-size:14px;margin-top:34px}

/* ---------- About ---------- */
.about-wrap{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.about-wrap .visual{
  height:340px;border-radius:16px;overflow:hidden;position:relative;
  background:linear-gradient(135deg,var(--blue-800),var(--blue-500));
}
.about-wrap .visual img{width:100%;height:100%;object-fit:cover;opacity:.9}
.about-wrap .visual .cap{
  position:absolute;left:0;right:0;bottom:0;padding:16px 22px;
  background:linear-gradient(transparent,rgba(10,37,64,.85));color:#fff;font-size:14px;font-weight:600;
}
.about-wrap h2{font-size:30px;color:var(--blue-900);margin-bottom:18px}
.about-wrap p{color:var(--gray);font-size:15.5px;margin-bottom:14px}
.feature-list{list-style:none;margin-top:22px}
.feature-list li{display:flex;gap:12px;align-items:flex-start;padding:9px 0;font-size:15px;color:var(--ink)}
.feature-list li::before{
  content:"✓";flex:0 0 22px;height:22px;background:var(--blue-100);color:var(--blue-600);
  border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:800;margin-top:2px;
}

/* ---------- Advantages ---------- */
.adv-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:26px}
.adv-card{
  background:var(--blue-50);border:1px solid var(--line);border-radius:14px;padding:34px 26px;
  transition:transform .25s, box-shadow .25s;
}
.adv-card:hover{transform:translateY(-5px);box-shadow:0 14px 34px rgba(13,58,102,.12);background:#fff}
.adv-card .icon{
  width:52px;height:52px;border-radius:13px;background:linear-gradient(135deg,var(--blue-600),var(--blue-400));
  color:#fff;font-size:24px;display:flex;align-items:center;justify-content:center;margin-bottom:20px;
}
.adv-card h3{font-size:17px;color:var(--blue-900);margin-bottom:10px}
.adv-card p{font-size:14px;color:var(--gray)}

/* ---------- CTA band ---------- */
.cta-band{background:linear-gradient(115deg,var(--blue-800),var(--blue-600));color:#fff;padding:64px 0;text-align:center}
.cta-band h2{font-size:30px;margin-bottom:14px}
.cta-band p{color:#cfe0f2;margin-bottom:30px;font-size:16px}
.cta-band .btn-primary{background:#fff;color:var(--blue-700);box-shadow:0 8px 24px rgba(0,0,0,.2)}
.cta-band .btn-primary:hover{box-shadow:0 12px 32px rgba(0,0,0,.3)}

/* ---------- Footer ---------- */
footer{background:var(--blue-900);color:#9fb8cf;padding:70px 0 0}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:44px;padding-bottom:44px}
.foot-grid h4{color:#fff;font-size:16px;margin-bottom:18px}
.foot-grid p, .foot-grid a{font-size:14px;line-height:2;color:#9fb8cf;display:block}
.foot-grid a:hover{color:#fff}
.foot-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.foot-brand .logo{
  width:40px;height:40px;border-radius:10px;
  background:linear-gradient(135deg,var(--blue-500),var(--blue-400));
  color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:18px;flex:0 0 40px;
}
.foot-brand b{color:#fff;font-size:16px}
.foot-legal{border-top:1px solid rgba(255,255,255,.1);padding:16px 0;display:flex;gap:22px;flex-wrap:wrap;font-size:13px}
.foot-legal a{color:#7e97ad}
.foot-legal a:hover{color:#fff}
.copyright{border-top:1px solid rgba(255,255,255,.1);padding:20px 0;font-size:13px;text-align:center;color:#7e97ad}

/* ============================================
   Legal / inner pages
   ============================================ */
.page-hero{
  background:linear-gradient(115deg,var(--blue-900),var(--blue-700));color:#fff;
  padding:64px 0 56px;position:relative;overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:52px 52px;
}
.page-hero .container{position:relative}
.page-hero .crumb{font-size:13px;color:#9fc3e6;margin-bottom:14px}
.page-hero .crumb a:hover{color:#fff}
.page-hero h1{font-size:36px;font-weight:800;line-height:1.3}
.page-hero .meta{margin-top:14px;font-size:14px;color:#cfe0f2}

.legal-wrap{display:grid;grid-template-columns:250px 1fr;gap:56px;padding:64px 0 90px;align-items:start}
.legal-cols{display:contents}
.toc{position:sticky;top:100px;background:var(--blue-50);border:1px solid var(--line);border-radius:12px;padding:22px 20px}
.toc h4{font-size:13px;color:var(--blue-600);letter-spacing:1.2px;text-transform:uppercase;margin-bottom:14px}
.toc a{display:block;font-size:14px;color:var(--gray);padding:6px 0 6px 12px;border-left:2px solid transparent;line-height:1.5}
.toc a:hover{color:var(--blue-600);border-left-color:var(--blue-500);background:rgba(29,118,204,.05)}
.legal-body{max-width:820px;font-size:15.5px;color:#33465a}
.legal-body h2{font-size:22px;color:var(--blue-900);margin:44px 0 16px;padding-top:8px;scroll-margin-top:100px}
.legal-body h2:first-child{margin-top:0}
.legal-body h3{font-size:17px;color:var(--blue-800);margin:24px 0 10px}
.legal-body p{margin-bottom:14px}
.legal-body ul,.legal-body ol{margin:0 0 16px 22px}
.legal-body li{margin-bottom:8px}
.legal-body strong{color:var(--blue-900)}
.legal-body a{color:var(--blue-600);text-decoration:underline}
.notice{
  background:#fff8e6;border-left:4px solid #e2a33c;padding:16px 20px;border-radius:6px;
  margin:24px 0;font-size:14.5px;color:#6b5320;
}
.info-box{background:var(--blue-50);border:1px solid var(--line);border-radius:10px;padding:22px 24px;margin:24px 0}
.info-box p{margin-bottom:6px}
.info-box p:last-child{margin-bottom:0}

/* ---------- Contact page ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:52px;align-items:start}
.contact-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:30px 28px;box-shadow:0 6px 24px rgba(13,58,102,.05)}
.contact-item{display:flex;gap:16px;padding:16px 0;border-bottom:1px solid var(--line)}
.contact-item:last-child{border-bottom:0}
.contact-item .ci-icon{
  width:44px;height:44px;flex:0 0 44px;border-radius:11px;background:var(--blue-100);
  color:var(--blue-600);display:flex;align-items:center;justify-content:center;font-size:19px;
}
.contact-item h4{font-size:14px;color:var(--gray);font-weight:500;margin-bottom:2px}
.contact-item p{font-size:15.5px;color:var(--blue-900);font-weight:600;word-break:break-word}
.form-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:34px 30px;box-shadow:0 6px 24px rgba(13,58,102,.05)}
.form-card h3{font-size:20px;color:var(--blue-900);margin-bottom:8px}
.form-card .hint{font-size:14px;color:var(--gray);margin-bottom:22px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;font-weight:600;color:var(--blue-800);margin-bottom:6px}
.field input,.field select,.field textarea{
  width:100%;padding:11px 14px;border:1px solid var(--line);border-radius:8px;
  font-size:14.5px;font-family:inherit;color:var(--ink);background:#fff;transition:border-color .2s, box-shadow .2s;
}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--blue-500);box-shadow:0 0 0 3px rgba(29,118,204,.12);
}
.field textarea{resize:vertical;min-height:110px}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-card .btn-primary{width:100%;border:0;cursor:pointer;margin-top:6px}
.form-note{font-size:12.5px;color:var(--gray);margin-top:12px;line-height:1.6}

/* ---------- Responsive ---------- */
@media (max-width:1080px){.prod-grid{grid-template-columns:repeat(3,1fr)}}
@media (max-width:960px){
  .hero .container{grid-template-columns:1fr}
  .hero h1{font-size:34px}
  .prod-grid{grid-template-columns:repeat(2,1fr)}
  .adv-grid{grid-template-columns:repeat(2,1fr)}
  .about-wrap{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr 1fr}
  nav.menu{display:none}
  .legal-wrap{grid-template-columns:1fr;gap:32px}
  .toc{position:static;order:-1}
  .contact-grid{grid-template-columns:1fr}
}
@media (max-width:600px){
  .prod-grid,.adv-grid,.foot-grid{grid-template-columns:1fr}
  .hero{padding:70px 0 80px}
  section{padding:64px 0}
  .page-hero h1{font-size:27px}
  .field-row{grid-template-columns:1fr}
}