/* 三维扫描服务网 - 全站样式 */
:root{
  --navy:#0b1f3a;
  --navy-2:#12294d;
  --blue:#0ea5e9;
  --cyan:#22d3ee;
  --bg:#f5f8fc;
  --card:#ffffff;
  --text:#1f2d3d;
  --muted:#5b6b80;
  --border:#e2e8f0;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"Segoe UI","Microsoft YaHei","PingFang SC",Helvetica,Arial,sans-serif;
  color:var(--text);background:var(--bg);line-height:1.65;font-size:16px;
}
a{color:var(--blue);text-decoration:none}
a:hover{color:#0284c7}
img{max-width:100%;display:block}
.container{max-width:1180px;margin:0 auto;padding:0 20px}

/* topbar */
.topbar{background:var(--navy);color:#cfe3f5;font-size:13px}
.topbar-inner{display:flex;justify-content:space-between;flex-wrap:wrap;padding:6px 20px}
.topbar-item{margin-right:18px}

/* header */
.site-header{background:#fff;border-bottom:1px solid var(--border);position:sticky;top:0;z-index:50}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:12px 20px}
.logo{display:flex;align-items:center;gap:10px;color:var(--navy);font-weight:700;font-size:18px}
.logo-text{color:var(--navy)}
.main-nav{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.main-nav>a{color:var(--text);font-weight:500;padding:6px 2px;border-bottom:2px solid transparent}
.main-nav>a.active,.main-nav>a:hover{color:var(--blue);border-bottom-color:var(--blue)}
.region-nav{margin-left:10px;padding-left:14px;border-left:1px solid var(--border);font-size:13px}
.region-nav-label{color:var(--muted);margin-right:6px}
.region-link{margin-right:8px;color:var(--muted)}
.menu-toggle{display:none;background:none;border:0;cursor:pointer;padding:8px;flex-direction:column;gap:4px}
.menu-toggle span{width:24px;height:2px;background:var(--navy);display:block}

/* hero */
.hero{position:relative;color:#fff;overflow:hidden;background:var(--navy)}
.hero-bg{position:absolute;inset:0;opacity:0.7}
.hero-inner{position:relative;padding:80px 20px;max-width:1180px;margin:0 auto}
.hero h1{font-size:38px;margin-bottom:14px;line-height:1.25}
.hero-sub{font-size:18px;color:#cfe3f5;max-width:720px;margin-bottom:24px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}

/* buttons */
.btn{display:inline-block;padding:11px 22px;border-radius:6px;font-weight:600;cursor:pointer;border:0;font-size:15px}
.btn-primary{background:var(--blue);color:#fff}
.btn-primary:hover{background:#0284c7;color:#fff}
.btn-outline{background:transparent;color:#fff;border:1px solid #7dd3fc}
.btn-outline:hover{background:rgba(255,255,255,0.08);color:#fff}

/* sections */
.section{padding:56px 0}
.section-alt{background:#eef4fb}
.section-title{font-size:26px;color:var(--navy);margin-bottom:28px;text-align:center}
.lead{font-size:17px;margin-bottom:16px;color:var(--text)}
.center{text-align:center}
.disclaimer{color:var(--muted);font-size:13px;margin-top:14px}
.industry-text{font-size:16px;background:#fff;padding:18px 22px;border-left:4px solid var(--blue);border-radius:4px}
.back-link{color:var(--muted)}

/* grids */
.grid{display:grid;gap:20px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.grid-5{grid-template-columns:repeat(5,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}

/* cards */
.card{background:var(--card);border:1px solid var(--border);border-radius:10px;padding:22px;transition:box-shadow .2s,transform .2s}
.card:hover{box-shadow:0 8px 24px rgba(11,31,58,0.08);transform:translateY(-2px)}
.card h3{font-size:17px;color:var(--navy);margin-bottom:8px}
.card p{font-size:14px;color:var(--muted)}
.card-icon{color:var(--blue);margin-bottom:10px}
.region-card{display:block;color:var(--text)}
.region-card h3{font-size:18px}

/* steps */
.steps .step{text-align:center}
.step-num{width:44px;height:44px;border-radius:50%;background:var(--blue);color:#fff;font-weight:700;display:flex;align-items:center;justify-content:center;margin:0 auto 10px}

/* faq */
.faq{max-width:820px;margin:0 auto}
.faq-item{background:#fff;border:1px solid var(--border);border-radius:8px;margin-bottom:10px;padding:12px 18px}
.faq-item summary{cursor:pointer;font-weight:600;color:var(--navy)}
.faq-item p{margin-top:10px;color:var(--muted);font-size:14px}

/* cta */
.cta-bar{background:linear-gradient(120deg,var(--navy),#1a3a6b);color:#fff;padding:36px 0}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap}
.cta-inner h2{font-size:22px;margin-bottom:6px}
.cta-inner p{color:#cfe3f5}

/* breadcrumb */
.breadcrumb{padding:14px 20px;font-size:13px;color:var(--muted)}
.breadcrumb a{color:var(--muted)}
.breadcrumb .sep{margin:0 8px}
.breadcrumb .current{color:var(--text)}

/* city list */
.city-list{list-style:none;display:grid;grid-template-columns:repeat(4,1fr);gap:8px 18px}
.city-list a{color:var(--text);padding:6px 0;border-bottom:1px dashed var(--border)}

/* bullets */
.bullets{padding-left:20px}
.bullets li{margin-bottom:10px}

/* contact */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:30px}
.contact-form label{display:block;margin-bottom:12px;font-weight:500;font-size:14px}
.contact-form input,.contact-form textarea{width:100%;padding:10px;border:1px solid var(--border);border-radius:6px;font-family:inherit;font-size:14px;margin-top:4px}
.map-placeholder{border:1px dashed var(--border);border-radius:8px;overflow:hidden;margin-top:14px}

/* footer */
.site-footer{background:var(--navy);color:#b9c9dd;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:30px;padding:44px 20px}
.site-footer h4{color:#fff;margin-bottom:14px;font-size:15px}
.site-footer ul{list-style:none}
.site-footer li{margin-bottom:8px;font-size:13px}
.site-footer a{color:#b9c9dd}
.site-footer a:hover{color:#fff}
.region-list{columns:2}
.footer-bottom{border-top:1px solid rgba(255,255,255,0.1);padding:16px 20px;font-size:12px;color:#8aa0bc}

/* error */
.error-code{font-size:96px;color:var(--blue);line-height:1;margin-bottom:10px}

/* note tag (盟/自治州/地区/省直辖) */
.note-tag{display:inline-block;font-size:13px;font-weight:500;color:#22d3ee;background:rgba(34,211,238,0.15);border:1px solid rgba(34,211,238,0.4);border-radius:4px;padding:1px 8px;vertical-align:middle;margin-left:6px}
.city-list .note-tag{font-size:11px;color:var(--blue);background:#e0f2fe;border-color:#bae6fd;padding:0 6px;margin-left:4px}

/* contact phone block */
.contact-phone-block{margin:30px auto;padding:30px;background:#fff;border:1px solid var(--border);border-radius:12px;max-width:520px}
.contact-phone-label{color:var(--muted);font-size:14px;margin-bottom:8px}
.contact-phone-number a{font-size:36px;font-weight:700;color:var(--navy);letter-spacing:1px}
.contact-phone-copy{margin-top:10px;color:var(--muted);font-size:14px}
.contact-phone-copy a{color:var(--blue)}

/* responsive */
@media (max-width:768px){
  .grid-3,.grid-4,.grid-5{grid-template-columns:1fr 1fr}
  .grid-2{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .contact-grid{grid-template-columns:1fr}
  .city-list{grid-template-columns:1fr 1fr}
  .hero-inner{padding:50px 20px}
  .hero h1{font-size:28px}
  .menu-toggle{display:flex}
  .main-nav{position:absolute;top:100%;left:0;right:0;background:#fff;flex-direction:column;align-items:flex-start;padding:16px 20px;border-top:1px solid var(--border);display:none}
  .main-nav.open{display:flex}
  .region-nav{margin:10px 0 0;padding-left:0;border-left:0;width:100%}
}
@media (max-width:480px){
  .grid-3,.grid-4,.grid-5{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
}