/* 云车科技官网 · 共用样式
   零外部依赖 · 目标单页 < 200KB */

:root{
  --ink:#12171c;
  --ink-2:#3d4650;
  --ink-3:#6b7683;
  --line:#e2e6ea;
  --bg:#ffffff;
  --bg-2:#f6f8f9;
  --navy:#0f2b46;
  --navy-2:#173b5c;
  --accent:#bf3a2b;
  --accent-2:#a32d20;
  --radius:6px;
}

*{box-sizing:border-box;margin:0;padding:0}

html{-webkit-text-size-adjust:100%}

body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;line-height:1.7;color:var(--ink);background:var(--bg);
  -webkit-font-smoothing:antialiased;
}

a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}

.wrap{max-width:1120px;margin:0 auto;padding:0 24px}

/* ---------- 顶部 ---------- */
.topbar{
  background:var(--navy);color:#cfd8e2;font-size:13px;
}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center;height:38px}
.topbar a{color:#cfd8e2}
.topbar a:hover{color:#fff}
.topbar .contact-mini{display:flex;gap:20px}

header.site{
  border-bottom:1px solid var(--line);background:#fff;position:sticky;top:0;z-index:50;
}
header.site .wrap{display:flex;align-items:center;justify-content:space-between;height:70px}
.logo{display:flex;align-items:center;gap:11px}
.logo-mark{
  width:34px;height:34px;border-radius:4px;background:var(--navy);
  display:flex;align-items:center;justify-content:center;flex:0 0 34px;
}
.logo-text b{display:block;font-size:16px;letter-spacing:.5px;line-height:1.25;font-weight:600}
.logo-text span{display:block;font-size:10.5px;color:var(--ink-3);letter-spacing:1.6px;line-height:1.2;text-transform:uppercase}

nav.main{display:flex;gap:34px;font-size:15px}
nav.main a{color:var(--ink-2);padding:6px 0;border-bottom:2px solid transparent;transition:color .15s,border-color .15s}
nav.main a:hover{color:var(--navy)}
nav.main a.on{color:var(--navy);border-bottom-color:var(--navy);font-weight:500}

.nav-toggle{display:none;background:none;border:1px solid var(--line);border-radius:4px;padding:7px 11px;font-size:13px;color:var(--ink-2);cursor:pointer}

/* ---------- Hero ---------- */
.hero{background:var(--navy);color:#fff;padding:76px 0 70px;position:relative;overflow:hidden}
.hero::after{
  content:"";position:absolute;right:-120px;top:-60px;width:520px;height:520px;
  border:1px solid rgba(255,255,255,.09);border-radius:50%;pointer-events:none;
}
.hero::before{
  content:"";position:absolute;right:-40px;top:20px;width:360px;height:360px;
  border:1px solid rgba(255,255,255,.06);border-radius:50%;pointer-events:none;
}
.hero .wrap{position:relative;z-index:1;display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center}
.hero h1{font-size:40px;line-height:1.28;font-weight:600;letter-spacing:-.5px;margin-bottom:18px}
.hero h1 em{font-style:normal;color:#ff8f7d}
.hero p.lead{font-size:16.5px;line-height:1.85;color:#c3cfdb;max-width:520px;margin-bottom:30px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.btn{
  display:inline-block;padding:13px 26px;border-radius:var(--radius);font-size:15px;
  font-weight:500;transition:background .15s,color .15s,border-color .15s;border:1px solid transparent;
}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-2)}
.btn-line{border-color:var(--line);color:var(--ink-2);background:#fff}
.btn-line:hover{border-color:#c3ccd6;background:var(--bg-2)}
.btn-ghost{border-color:rgba(255,255,255,.32);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.55)}

.hero-visual{
  background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.12);
  border-radius:8px;padding:22px;
}
.hero-visual .row{display:flex;justify-content:space-between;padding:13px 0;border-bottom:1px solid rgba(255,255,255,.09);font-size:14px}
.hero-visual .row:last-child{border-bottom:none}
.hero-visual .row span:first-child{color:#93a4b5}
.hero-visual .row span:last-child{color:#fff;font-weight:500}

/* ---------- 区块 ---------- */
section{padding:72px 0}
section.alt{background:var(--bg-2)}

.sec-head{margin-bottom:42px;max-width:660px}
.sec-head .kicker{
  display:block;font-size:12.5px;letter-spacing:2px;text-transform:uppercase;
  color:var(--accent);font-weight:600;margin-bottom:10px;
}
.sec-head h2{font-size:29px;font-weight:600;letter-spacing:-.3px;line-height:1.35}
.sec-head p{margin-top:12px;color:var(--ink-3);font-size:15.5px}

.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:26px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}

.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:28px 26px;transition:border-color .18s,transform .18s;
}
.card:hover{border-color:#c3ccd6}
.card h3{font-size:18px;font-weight:600;margin-bottom:9px}
.card p{font-size:14.5px;color:var(--ink-3);line-height:1.75}
.card .idx{
  display:block;font-size:12px;font-weight:600;letter-spacing:1.5px;
  color:var(--accent);margin-bottom:14px;
}

/* 产品图占位 */
.ph{
  background:var(--bg-2);border:1px solid var(--line);border-radius:4px;
  height:150px;display:flex;align-items:center;justify-content:center;
  margin-bottom:20px;color:#b3bcc6;font-size:12.5px;letter-spacing:1px;
}
.ph svg{width:64px;height:64px;opacity:.45}

/* 产品线图标 */
.p-ico{
  width:54px;height:54px;display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:50%;background:var(--bg-2);
  color:var(--navy-2);margin-bottom:18px;
}
.p-ico svg{width:25px;height:25px}

/* 数据条 */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.stats div{background:#fff;padding:26px 22px;text-align:center}
.stats b{display:block;font-size:27px;font-weight:600;color:var(--navy);letter-spacing:-.5px;line-height:1.2}
.stats span{display:block;font-size:13px;color:var(--ink-3);margin-top:6px}

/* 联系 */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px}
.info-list{list-style:none}
.info-list li{display:flex;gap:16px;padding:18px 0;border-bottom:1px solid var(--line)}
.info-list li:first-child{padding-top:0}
.info-list .lbl{flex:0 0 92px;color:var(--ink-3);font-size:14px}
.info-list .val{font-size:15px;line-height:1.65}
.info-list .val b{font-weight:600}
.info-list .val small{display:block;color:var(--ink-3);font-size:13px;margin-top:2px}

form .field{margin-bottom:16px}
form label{display:block;font-size:13.5px;color:var(--ink-2);margin-bottom:6px}
form input,form textarea{
  width:100%;border:1px solid var(--line);border-radius:4px;padding:11px 13px;
  font-family:inherit;font-size:14.5px;color:var(--ink);background:#fff;
}
form input:focus,form textarea:focus{outline:none;border-color:var(--navy-2)}
form textarea{resize:vertical;min-height:110px}
.hint{font-size:12.5px;color:var(--ink-3);margin-top:10px;line-height:1.6}

/* CTA 条 */
.cta{background:var(--navy);color:#fff;padding:58px 0}
.cta .wrap{display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap}
.cta h2{font-size:25px;font-weight:600;letter-spacing:-.3px}
.cta p{color:#b8c6d4;margin-top:8px;font-size:15px}

/* ---------- 页脚 ---------- */
footer.site{background:#0b1d2e;color:#93a4b5;padding:52px 0 0;font-size:14px}
footer.site .cols{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding-bottom:42px}
footer.site h4{color:#fff;font-size:14px;font-weight:600;margin-bottom:16px;letter-spacing:.5px}
footer.site ul{list-style:none}
footer.site ul li{margin-bottom:10px}
footer.site a:hover{color:#fff}
footer.site .about p{line-height:1.85;color:#7d8fa1;font-size:13.5px;margin-top:12px}
.legal{
  border-top:1px solid rgba(255,255,255,.08);padding:20px 0 26px;
  display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;
  font-size:12.5px;color:#6d8093;
}
.legal a{color:#6d8093}
.legal a:hover{color:#fff}

/* ---------- 内页头 ---------- */
.page-head{background:var(--navy);color:#fff;padding:56px 0 50px}
.page-head .kicker{font-size:12.5px;letter-spacing:2px;text-transform:uppercase;color:#ff9d8c;font-weight:600}
.page-head h1{font-size:32px;font-weight:600;margin-top:10px;letter-spacing:-.3px}
.page-head p{color:#b8c6d4;margin-top:12px;max-width:640px;font-size:15.5px}

/* 面包屑 */
.crumb{font-size:13px;color:var(--ink-3);padding:16px 0 0}
.crumb a:hover{color:var(--navy)}

/* 表格（规格） */
table.spec{width:100%;border-collapse:collapse;font-size:14.5px;margin-top:18px}
table.spec th,table.spec td{border:1px solid var(--line);padding:11px 14px;text-align:left}
table.spec th{background:var(--bg-2);font-weight:500;width:32%;color:var(--ink-2)}

/* 占位标记 */
.todo{
  background:#fff4e5;border:1px dashed #e0b077;color:#8a5a1c;
  padding:1px 7px;border-radius:3px;font-size:12.5px;white-space:nowrap;
}

/* 工厂实景 */
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.gallery figure{margin:0;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff}
.gallery img{width:100%;height:212px;object-fit:cover;transition:transform .45s ease}
.gallery figure:hover img{transform:scale(1.045)}
.gallery figcaption{font-size:12.5px;color:var(--ink-3);padding:9px 12px;border-top:1px solid var(--line)}

/* 证书墙 */
.certs{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.certs a{display:block;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff;transition:border-color .18s,box-shadow .18s}
.certs a:hover{border-color:#c3ccd6;box-shadow:0 6px 20px rgba(15,43,70,.09)}
.certs img{width:100%;height:222px;object-fit:contain;background:#fbfcfd;padding:8px}
.certs .cap{display:block;padding:10px 12px;border-top:1px solid var(--line);text-align:center;font-size:13px;color:var(--ink-2);line-height:1.5}
.certs .cap small{display:block;color:var(--ink-3);font-size:11.5px;margin-top:2px}

/* 二维码 */
.qr-box{display:flex;gap:16px;align-items:center;border:1px solid var(--line);border-radius:var(--radius);padding:16px;background:var(--bg-2);margin-top:22px}
.qr-box img{width:104px;height:104px;object-fit:contain;background:#fff;border:1px solid var(--line);border-radius:4px}
.qr-box p{font-size:13.5px;color:var(--ink-3);line-height:1.7}
.qr-box b{display:block;color:var(--ink);font-size:14.5px;margin-bottom:4px}

/* ---------- 响应式 ---------- */
.hero .wrap > *,
.grid-2 > *,.grid-3 > *,.grid-4 > *,.stats > *,.contact-grid > *{min-width:0}
.hero-visual .row{gap:14px}
.hero-visual .row span{min-width:0;overflow-wrap:anywhere}
.hero-visual .row span:last-child{text-align:right}
table.spec{table-layout:fixed}
table.spec th,table.spec td{overflow-wrap:anywhere}

@media (max-width:900px){
  .hero .wrap{grid-template-columns:1fr;gap:36px}
  .hero h1{font-size:31px}
  .grid-3,.grid-4,.certs{grid-template-columns:1fr 1fr}
  .gallery{grid-template-columns:1fr 1fr}
  .stats{grid-template-columns:1fr 1fr}
  .contact-grid{grid-template-columns:1fr;gap:36px}
  footer.site .cols{grid-template-columns:1fr 1fr;gap:30px}
  section{padding:52px 0}
}
@media (max-width:620px){
  .topbar .contact-mini{display:none}
  nav.main{
    display:none;position:absolute;top:70px;left:0;right:0;background:#fff;
    flex-direction:column;gap:0;padding:8px 24px 16px;border-bottom:1px solid var(--line);
  }
  nav.main.open{display:flex}
  nav.main a{padding:13px 0;border-bottom:1px solid var(--line);width:100%}
  .nav-toggle{display:block}
  .hero{padding:52px 0 48px}
  .hero h1{font-size:27px}
  .grid-2,.grid-3,.grid-4,.certs{grid-template-columns:1fr}
  .gallery{grid-template-columns:1fr}
  .gallery img{height:220px}
  .stats{grid-template-columns:1fr 1fr}
  .todo{white-space:normal}
  footer.site .cols{grid-template-columns:1fr}
  .sec-head h2{font-size:24px}
  .page-head h1{font-size:26px}
  .cta h2{font-size:21px}
}