:root{
  --brand:#0d3b5c;
  --brand-2:#14506f;
  --accent:#f0a500;
  --accent-d:#d18f00;
  --ink:#12202b;
  --muted:#5c6b79;
  --line:#e4e9ee;
  --bg-alt:#f6f8fa;
  --radius:4px;
  --wrap:1180px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:#fff;color:var(--ink);
  font:16px/1.75 -apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
h1,h2,h3{line-height:1.35;margin:0 0 .6em;font-weight:700;letter-spacing:-.01em}
p{margin:0 0 1em}
ul,ol{margin:0;padding:0;list-style:none}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 24px}

/* header */
.site-header{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .2s}
.site-header.scrolled{box-shadow:0 6px 20px rgba(16,32,48,.08)}
.header-inner{display:flex;align-items:center;gap:20px;height:74px}
.brand{display:inline-flex;flex-direction:column;justify-content:center;gap:3px;text-decoration:none;line-height:1;flex-shrink:0}
.brand-cn{font-size:21px;font-weight:800;color:#16232f;letter-spacing:0;white-space:nowrap}
.brand-cn i{font-style:normal;color:#2090e0}
.brand-en{font-size:8.5px;letter-spacing:.135em;color:#a9b4bf;white-space:nowrap;font-weight:500}
.brand img{width:262px;height:auto}
.f-brand .brand-cn{font-size:21px;color:#fff}
.f-brand .brand-cn i{color:#5cb3e6}
.f-brand .brand-en{color:rgba(255,255,255,.42);font-size:8px}
.f-brand{gap:4px}
.nav{display:flex;gap:22px;margin-left:auto;flex-wrap:nowrap}
.nav a{font-size:14.5px;color:#26364a;padding:6px 0;position:relative;white-space:nowrap}
.nav a:hover{color:var(--brand)}
.nav a.on{color:var(--brand);font-weight:600}
.nav a.on::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--accent)}
.nav-item{position:relative;display:inline-flex;align-items:center}
.nav-drop{position:absolute;top:calc(100% + 10px);left:50%;transform:translateX(-50%);display:none;background:#fff;border:1px solid var(--line);border-radius:8px;box-shadow:0 14px 34px rgba(16,32,48,.14);padding:6px;min-width:150px;z-index:60}
.nav-item:hover .nav-drop{display:block}
.nav-drop a{display:block;padding:10px 14px;border-radius:5px;white-space:nowrap;font-size:14px}
.nav-drop a:hover{background:#f2f5f8;color:var(--brand)}
.header-tel{display:flex;flex-direction:column;line-height:1.2;text-align:right;padding-left:18px;border-left:1px solid var(--line);flex-shrink:0}
.header-tel span{font-size:12px;color:var(--muted)}
.header-tel b{font-size:19px;color:var(--brand);letter-spacing:.02em}
.burger{display:none;margin-left:auto;width:44px;height:44px;border:0;background:none;padding:10px 8px;cursor:pointer}
.burger span{display:block;height:2px;background:var(--ink);margin:5px 0;transition:.25s}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* buttons */
.btn{display:inline-block;padding:13px 26px;font-size:15px;font-weight:600;border-radius:var(--radius);border:1px solid transparent;transition:.2s;cursor:pointer}
.btn-accent{background:var(--accent);color:#1a1200}
.btn-accent:hover{background:var(--accent-d)}
.btn-line{border-color:rgba(255,255,255,.6);color:#fff}
.btn-line:hover{background:rgba(255,255,255,.12)}
.btn-ghost{border-color:rgba(255,255,255,.45);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.1)}
.btn-block{width:100%;text-align:center}

/* hero */
.hero{position:relative;min-height:600px;display:flex;align-items:center;color:#fff;overflow:hidden;background:#0a1620}
.hero-bg{position:absolute;inset:0}
.hero-bg img{width:100%;height:100%;object-fit:cover;object-position:center 42%}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(4,14,24,.96) 0%,rgba(4,14,24,.84) 40%,rgba(4,14,24,.42) 70%,rgba(4,14,24,.22) 100%)}
.hero-inner{position:relative;z-index:2;padding:96px 24px}
.eyebrow{font-size:13px;letter-spacing:.18em;color:var(--accent);font-weight:600;margin-bottom:14px}
.hero h1{font-size:clamp(30px,4.6vw,52px);margin-bottom:20px}
.hero-sub{font-size:17px;max-width:640px;color:rgba(255,255,255,.86);margin-bottom:32px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-tags{display:flex;gap:26px;flex-wrap:wrap;margin-top:38px;font-size:14px;color:rgba(255,255,255,.72)}
.hero-tags li{position:relative;padding-left:16px}
.hero-tags li::before{content:"";position:absolute;left:0;top:.62em;width:6px;height:6px;background:var(--accent);border-radius:50%}

/* stats */
.stats{background:var(--brand);color:#fff;padding:34px 0}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center}
.stats b{display:block;font-size:34px;color:var(--accent);line-height:1.1}
.stats span{font-size:14px;color:rgba(255,255,255,.78)}

/* sections */
.section{padding:84px 0}
.section-alt{background:var(--bg-alt)}
.section-dark{background:#0a1620;color:#fff}
.section-dark p{color:rgba(255,255,255,.75)}
.h2{font-size:clamp(24px,2.6vw,32px);margin-bottom:14px}
.lead{color:var(--muted);max-width:720px;margin-bottom:40px}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:34px}
.link-more{color:var(--brand);font-weight:600;font-size:15px;white-space:nowrap;display:inline-block;margin-top:14px}
.link-more:hover{color:var(--accent-d)}

/* biz cards */
.biz-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:28px;margin-top:12px}
.biz-grid.biz-3{grid-template-columns:repeat(3,1fr)}
.why-grid.why-4{grid-template-columns:repeat(4,1fr)}
.biz-card{background:#fff;border:1px solid var(--line);border-radius:6px;overflow:hidden;display:flex;flex-direction:column;height:100%}
.biz-card img{aspect-ratio:3/2;object-fit:cover;width:100%}
.biz-body{display:flex;flex-direction:column;flex:1;padding:26px 28px 30px}
.biz-body h3{font-size:21px}
.ticks li{position:relative;padding-left:20px;margin-bottom:8px;color:var(--muted);font-size:15px}
.ticks li::before{content:"";position:absolute;left:0;top:.62em;width:7px;height:7px;border:2px solid var(--accent);border-radius:50%}

/* scene */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.scene{background:#fff;padding:28px 26px}
a.scene{transition:background .2s}
a.scene:hover{background:#fbfcfd}
a.scene h3{color:var(--brand)}
.scene h3{font-size:17px;margin-bottom:6px}
.scene p{color:var(--muted);font-size:14px;margin:0}

/* cases */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
a.case-item{text-decoration:none;color:inherit;display:block}
.case-item{margin:0;background:#fff;border:1px solid var(--line);border-radius:6px;overflow:hidden}
.case-item img{aspect-ratio:3/2;object-fit:cover;width:100%;transition:transform .4s}
.case-item:hover img{transform:scale(1.03)}
.case-item figcaption{padding:14px 16px;font-size:14px;color:var(--muted);line-height:1.5}
.case-item figcaption span{display:inline-block;background:#f2f5f8;color:var(--brand);font-size:12px;padding:2px 8px;border-radius:2px;margin-right:8px}
.case-item figcaption em{display:block;font-style:normal;font-size:12.5px;color:#8b97a3;margin-top:5px}

/* steps */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:26px;margin-top:20px;counter-reset:s}
.steps li{border-top:2px solid var(--accent);padding-top:18px}
.steps b{display:block;font-size:26px;color:rgba(255,255,255,.25);margin-bottom:6px;font-weight:800}
.steps h3{font-size:17px;margin-bottom:6px}
.steps p{font-size:14px;margin:0}
.steps-light b{color:#c9d3dc}
.steps-light h3{color:var(--ink)}
.steps-light p{color:var(--muted)}

/* why */
.why-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.why-grid>div{background:#fff;border-left:3px solid var(--accent);padding:22px 24px;box-shadow:0 1px 0 var(--line)}
.why-grid h3{font-size:17px;margin-bottom:8px}
.why-grid p{color:var(--muted);font-size:15px;margin:0}

/* news */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{display:block;background:#fff;border:1px solid var(--line);border-radius:6px;padding:24px;transition:.2s}
.news-card:hover{border-color:var(--brand);transform:translateY(-2px)}
.news-card time{font-size:13px;color:var(--muted)}
.news-card h3{font-size:17px;margin:8px 0 8px}
.news-card p{font-size:14px;color:var(--muted);margin:0}
.news-list{display:flex;flex-direction:column;gap:0}
.news-row{display:grid;grid-template-columns:130px 1fr;gap:24px;padding:26px 0;border-bottom:1px solid var(--line)}
.news-row:hover h3{color:var(--brand)}
.news-row time{color:var(--muted);font-size:14px}
.news-row h3{font-size:18px;margin-bottom:6px}
.news-row p{color:var(--muted);font-size:15px;margin:0}

/* page hero */
.page-hero{background:var(--brand);color:#fff;padding:64px 0 58px}
.page-hero h1{font-size:clamp(26px,3.4vw,40px);margin-bottom:12px}
.page-hero p{color:rgba(255,255,255,.82);max-width:720px;margin-bottom:0}
.page-hero .hero-actions{margin-top:26px}
.crumb{font-size:13px;color:rgba(255,255,255,.6);margin-bottom:18px}
.crumb a{color:rgba(255,255,255,.8)}

/* table */
.table-wrap{overflow-x:auto;border:1px solid var(--line);background:#fff}
.cmp{width:100%;border-collapse:collapse;min-width:680px}
.cmp th,.cmp td{padding:16px 18px;text-align:left;font-size:15px;border-bottom:1px solid var(--line)}
.cmp thead th{background:#eef2f6;color:var(--brand);font-size:14px}
.cmp tbody th{font-weight:600;color:var(--ink);white-space:nowrap}
.cmp td{color:var(--muted)}

/* contact */
.contact-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:56px}
.big-tel{font-size:38px;font-weight:800;color:var(--brand);margin:10px 0 0;letter-spacing:.01em}
.sub{color:var(--muted);font-size:14px}
.contact-dl{display:grid;grid-template-columns:76px 1fr;gap:10px 16px;margin:28px 0;font-size:15px}
.contact-dl dt{color:var(--muted)}
.contact-dl dd{margin:0}
.map-box{margin-top:26px;border:1px dashed #c9d3dc;background:#f2f5f8;padding:26px;border-radius:6px}
.map-box p{margin:0 0 6px;font-weight:600;color:var(--brand)}
.map-box span{color:var(--muted);font-size:14px}
.contact-form{background:#fff;border:1px solid var(--line);border-radius:8px;padding:34px}
.contact-form label{display:block;font-size:14px;color:var(--muted);margin-bottom:16px}
.contact-form input,.contact-form select,.contact-form textarea{
  display:block;width:100%;margin-top:6px;padding:12px 14px;border:1px solid #cdd6df;border-radius:4px;
  font:inherit;font-size:15px;color:var(--ink);background:#fbfcfd
}
.contact-form input:focus,.contact-form select:focus,.contact-form textarea:focus{outline:2px solid rgba(240,165,0,.35);border-color:var(--accent)}
.row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-note{font-size:13px;color:var(--muted);margin-top:14px}
.form-note.ok{color:#1a7f37;font-weight:600}
.form-actions{display:flex;gap:10px;flex-wrap:wrap;margin:10px 0 8px}
.form-actions .btn{font-weight:600}
.form-actions .btn-line{color:var(--brand);border-color:var(--brand);background:#fff}
.form-tip{font-size:12.5px;color:#6b7a8a;font-weight:400}

/* article */
.article{padding:56px 0 20px}
.article-wrap{max-width:760px}
.article .crumb{color:var(--muted)}
.article .crumb a{color:var(--brand)}
.article h1{font-size:clamp(26px,3vw,36px);margin-bottom:10px}
.article .meta{color:var(--muted);font-size:14px;border-bottom:1px solid var(--line);padding-bottom:18px;margin-bottom:26px}
.article h2{font-size:20px;margin-top:1.8em}
.article p{color:#2b3a48}
.article-cta{background:var(--bg-alt);padding:18px 20px;border-left:3px solid var(--accent);margin-top:32px}
.article-cta a{color:var(--brand);font-weight:600}

/* cta band */
.cta-band{background:var(--brand-2);color:#fff;padding:54px 0}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap}
.cta-inner h2{font-size:26px;margin-bottom:8px}
.cta-inner p{margin:0;color:rgba(255,255,255,.8);max-width:620px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* two col */
.two-col{display:grid;grid-template-columns:1.5fr 1fr;gap:56px;align-items:start}
.two-col p{color:#2b3a48}
.info-card{background:var(--bg-alt);border:1px solid var(--line);padding:26px 26px 20px;border-radius:6px}
.info-card h3{font-size:16px;color:var(--brand);margin-bottom:16px}
.info-card dl{display:grid;grid-template-columns:78px 1fr;gap:10px 12px;font-size:14px;margin:0}
.info-card dt{color:var(--muted)}
.info-card dd{margin:0;word-break:break-all}

/* filters */
.filters{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:28px}
.chip{border:1px solid var(--line);background:#fff;padding:9px 18px;border-radius:999px;font:inherit;font-size:14px;cursor:pointer;color:#26364a}
.chip:hover{border-color:var(--brand)}
.chip.on{background:var(--brand);color:#fff;border-color:var(--brand)}

/* footer */
.site-footer{background:#0a1620;color:rgba(255,255,255,.7);padding:64px 0 28px;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:36px}
.f-brand img{margin-bottom:16px;filter:brightness(0) invert(1);opacity:.92}
.f-brand p{font-size:14px;line-height:1.8;margin:0}
.site-footer h3{font-size:14px;color:#fff;margin-bottom:14px;letter-spacing:.05em}
.site-footer ul li{margin-bottom:9px}
.site-footer a:hover{color:#fff}
.f-contact p{margin:0 0 9px;display:grid;grid-template-columns:44px 1fr;gap:8px}
.f-contact span{color:rgba(255,255,255,.45)}
.footer-bottom{display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;border-top:1px solid rgba(255,255,255,.12);margin-top:44px;padding-top:22px;font-size:13px;color:rgba(255,255,255,.45)}
.footer-bottom p{margin:0}
.footer-bottom a{color:rgba(255,255,255,.6)}

/* responsive */
@media (max-width:1080px){
  .footer-grid{grid-template-columns:1fr 1fr}
  .contact-grid{grid-template-columns:1fr;gap:36px}
  .two-col{grid-template-columns:1fr;gap:34px}
}
@media (max-width:900px){
  .nav{position:fixed;left:0;right:0;top:74px;background:#fff;flex-direction:column;gap:0;padding:8px 24px 20px;border-bottom:1px solid var(--line);display:none;box-shadow:0 18px 30px rgba(0,0,0,.08)}
  .nav.open{display:flex}
  .nav a{padding:14px 0;border-bottom:1px solid var(--line);font-size:16px}
  .nav-item{display:block;width:100%}
  .nav-drop{position:static;transform:none;display:block;border:0;box-shadow:none;padding:0;min-width:0}
  .nav-drop a{padding:12px 0 12px 16px;font-size:15px;color:#4a5a6a}
  .nav a.on::after{display:none}
  .header-tel{display:none}
  .burger{display:block}
  .biz-grid,.biz-grid.biz-3,.scene-grid,.case-grid,.steps,.why-grid,.why-grid.why-4,.news-grid{grid-template-columns:1fr 1fr}
  .steps{gap:20px}
  .hero{min-height:520px}
  .section{padding:60px 0}
}
@media (max-width:640px){
  .header-inner{gap:12px}
  .brand-cn{font-size:19px}.brand-en{font-size:7px;letter-spacing:.1em}.brand img{width:190px}
  .biz-grid,.biz-grid.biz-3,.scene-grid,.case-grid,.steps,.why-grid,.why-grid.why-4,.news-grid,.footer-grid{grid-template-columns:1fr}
  .row{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:1fr 1fr;gap:24px}
  .stats b{font-size:28px}
  .news-row{grid-template-columns:1fr;gap:6px}
  .hero-inner{padding:72px 20px}
  .hero-tags{gap:16px;font-size:13px}
  .cta-inner{display:block}
  .cta-actions{margin-top:20px}
  .big-tel{font-size:30px}
  .contact-form{padding:24px}
  .wrap{padding:0 20px}
}

.m-bar{display:none}
@media (max-width:640px){
  .m-bar{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:99;background:#fff;border-top:1px solid var(--line,#e5e7eb);padding:8px 12px calc(8px + env(safe-area-inset-bottom,0px));gap:8px;box-shadow:0 -4px 16px rgba(0,0,0,.08)}
  .m-bar a{flex:1;text-align:center;padding:13px 8px;border-radius:8px;font-weight:700;font-size:15px;text-decoration:none;line-height:1}
  .m-bar-tel{background:#eef0f3;color:#111}
  .m-bar-cta{background:#f5b301;color:#111}
  body{padding-bottom:78px}
}


/* 近期项目卡片 */
.proj-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:26px}
.proj{position:relative;display:block;background:#fff;border:1px solid var(--line);border-left:3px solid var(--accent);border-radius:6px;padding:22px 20px 18px;text-decoration:none;color:inherit;transition:box-shadow .2s,transform .2s,border-color .2s;overflow:hidden}
.proj:hover{transform:translateY(-3px);box-shadow:0 12px 28px rgba(16,32,48,.10);border-left-color:var(--brand)}
.proj-no{position:absolute;right:14px;top:6px;font-size:44px;font-weight:800;color:#f3f6f9;line-height:1;pointer-events:none}
.proj-tag{display:inline-block;font-size:12px;color:var(--brand);background:#f2f5f8;padding:3px 9px;border-radius:2px;font-weight:600}
.proj h3{font-size:17px;margin:12px 0 8px;color:#16232f}
.proj p{font-size:13.5px;color:#8b97a3;margin:0}
.proj-more{display:inline-block;margin-top:12px;font-size:13px;color:var(--brand);font-weight:600}
@media (max-width:900px){.proj-grid{grid-template-columns:1fr 1fr}}
@media (max-width:640px){.proj-grid{grid-template-columns:1fr}}

.group-label{font-size:13px;font-weight:700;color:var(--brand);letter-spacing:.06em;margin:34px 0 14px;padding-left:10px;border-left:3px solid var(--accent)}

/* 流程条 */
.flow{display:flex;flex-wrap:wrap;align-items:center;gap:6px;margin:22px 0 8px}
.flow-step{display:inline-flex;align-items:center;gap:7px;background:#fff;border:1px solid var(--line);border-radius:999px;padding:8px 15px;font-size:13.5px;color:#43536a}
.flow-step b{font-size:11px;color:var(--accent);font-weight:800}
.flow-step.on{border-color:var(--accent);box-shadow:0 4px 12px rgba(245,179,1,.18)}
.flow-arrow{color:#c8d2dc;font-size:13px;margin:0 4px}
/* 卡片序号 */
.card-no{display:inline-block;min-width:20px;font-size:11.5px;font-weight:800;color:var(--accent);margin-right:7px;vertical-align:2px}
/* 两组不同基调 */
.why-grid.group-b > div{border-left-color:var(--brand)}
.why-grid.group-b > div h3{color:var(--brand)}

/* 材料与检测 图文 */
.doc-split{display:grid;grid-template-columns:300px 1fr;gap:40px;align-items:start;margin-top:28px}
.doc-figure{margin:0}
.doc-figure img{width:100%;height:auto;border:1px solid var(--line);border-radius:6px;box-shadow:0 10px 26px rgba(16,32,48,.10)}
.doc-figure figcaption{font-size:12px;color:#8b97a3;margin-top:10px;text-align:center}
.doc-text h3{font-size:17px;margin:0 0 12px}
@media (max-width:820px){.doc-split{grid-template-columns:1fr;gap:24px}.doc-figure{max-width:280px;margin:0 auto}}

/* 资质证照 */
.zz-grid{display:grid;grid-template-columns:1fr 1fr;gap:26px;margin-top:30px;align-items:stretch}
.zz-card{margin:0;background:#fff;border:1px solid var(--line);border-radius:8px;overflow:hidden;display:flex;flex-direction:column}
.zz-figure{height:420px;display:flex;align-items:center;justify-content:center;background:#f7f9fb;padding:18px;box-sizing:border-box}
.zz-figure img{max-width:100%;max-height:100%;width:auto;height:auto;object-fit:contain;box-shadow:0 6px 18px rgba(16,32,48,.12);background:#fff}
.zz-card figcaption{padding:16px 18px;font-size:13px;color:#5b6b7c;line-height:1.7;border-top:1px solid var(--line)}
.zz-card figcaption b{display:block;font-size:15px;color:#16232f;margin-bottom:5px}
.zz-card figcaption span{display:block;color:#43536a}
.zz-card figcaption em{display:block;font-style:normal;color:#8b97a3;font-size:12.5px;margin-top:3px}
@media (max-width:820px){.zz-grid{grid-template-columns:1fr}.zz-figure{height:340px}}

.biz-card.wide img{aspect-ratio:16/10}

/* 表单折叠区 */
.form-more{margin:6px 0 18px;border-top:1px dashed #dde4ea;padding-top:14px}
.form-more summary{cursor:pointer;font-size:13.5px;color:#1c6ea9;font-weight:600;list-style:none;padding:4px 0}
.form-more summary::-webkit-details-marker{display:none}
.form-more summary::before{content:"＋ ";font-weight:700}
.form-more[open] summary::before{content:"－ "}
.form-more label{display:block;margin-top:12px}
/* 微信入口 */

/* 案例页底部转化块 */
.rel-cta{margin-top:18px;background:#f7f9fb;border:1px solid var(--line);border-radius:8px;padding:22px 24px}
.rel-cta p{margin:0 0 14px;font-size:14.5px;color:#43536a;line-height:1.7}
.rel-cta p b{color:#16232f;font-size:16px;display:block;margin-bottom:4px}
.rel-cta-actions{display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.rel-cta-actions .chip{margin-left:auto}

/* 页脚微信 */
.f-wx{display:flex;align-items:center;gap:8px;flex-wrap:wrap}

/* 扫码联系 */
.qr-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:28px}
.qr-card{margin:0;background:#fff;border:1px solid var(--line);border-radius:10px;padding:20px 18px;text-align:center}
.qr-card a{display:inline-block;transition:transform .18s ease}
.qr-card a:hover{transform:scale(1.04)}
.qr-card img{width:150px;height:150px;display:block;border-radius:6px}
.qr-card figcaption{margin-top:14px;font-size:12.5px;color:#7d8b99;line-height:1.75}
.qr-card figcaption b{display:block;font-size:14.5px;color:#16232f;margin-bottom:3px}
.qr-card figcaption span{display:block;color:#43536a}
.qr-card figcaption em{display:block;font-style:normal;color:#8b97a3;font-size:12px;margin-top:2px}
@media (max-width:820px){.qr-grid{grid-template-columns:1fr}.qr-card img{width:170px;height:170px;margin:0 auto}}


.f-dy{display:flex;align-items:baseline;gap:8px;font-size:13px;margin-top:6px}
.f-dy a{color:#8fb4d8;text-decoration:none;border-bottom:1px dotted rgba(143,180,216,.45);white-space:nowrap}
.f-dy a:hover{color:#fff}

/* 页脚三码 */.f-qr-img{width:64px;height:64px}}

/* 页脚二维码行（大图） */
.f-qrs-title i{display:block;font-style:normal;font-size:12.5px;color:#7d8b99;font-weight:400;margin-top:5px}
.f-qr-img img{width:100%;height:100%;display:block;object-fit:contain}

/* 页脚二维码卡片带 */
.f-qr-band{border-top:1px solid rgba(255,255,255,.08);margin-top:6px}
.f-qr-band .wrap{padding:26px 0 30px}
.f-qr-head{margin-bottom:18px}
.f-qr-head h3{font-size:15px;color:#e6eef5;margin:0 0 5px;font-weight:700;letter-spacing:.01em}
.f-qr-head p{font-size:12.5px;color:#7d8b99;margin:0}
.f-qr-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.f-qr-card{display:flex;align-items:center;gap:18px;padding:16px;background:rgba(255,255,255,.045);border:1px solid rgba(255,255,255,.09);border-radius:10px;text-decoration:none;transition:background .18s ease,border-color .18s ease}
.f-qr-card:hover{background:rgba(255,255,255,.08);border-color:rgba(245,179,1,.5)}
.f-qr-card img{width:120px;height:120px;background:#fff;border-radius:8px;display:block;flex:0 0 auto}
.f-qr-card span{min-width:0}
.f-qr-card b{display:block;font-size:14.5px;color:#e6eef5;font-weight:700;margin-bottom:6px}
.f-qr-card i{display:block;font-style:normal;font-size:12px;color:#8b97a3;line-height:1.7}
@media (max-width:900px){.f-qr-cards{grid-template-columns:1fr;gap:12px}}
@media (max-width:560px){.f-qr-card img{width:100px;height:100px}.f-qr-card{gap:14px;padding:13px}}

.biz-body .link-more{margin-top:auto;padding-top:16px}

/* 4 项场景/工艺卡片：单行四列 */
.scene-grid.scene-4{grid-template-columns:repeat(4,1fr)}
/* 5 项图片卡：居中流式，末行不留空 */
.case-grid.center{display:flex;flex-wrap:wrap;justify-content:center;gap:22px}
.case-grid.center>.case-item{width:calc(33.333% - 15px);margin:0}
@media (max-width:900px){.case-grid.center>.case-item{width:calc(50% - 11px)}}
@media (max-width:600px){.case-grid.center>.case-item{width:100%}}

/* 交互细节：锚点偏移 + 键盘焦点 */
html{scroll-padding-top:84px}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid rgba(28,110,169,.55);outline-offset:2px;border-radius:3px}

/* 案例页同类项目 */
.rel-cases{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:24px}
.rel-card{display:block;text-decoration:none;background:#fff;border:1px solid var(--line);border-radius:8px;overflow:hidden;transition:box-shadow .18s ease,transform .18s ease}
.rel-card:hover{box-shadow:0 10px 24px rgba(16,32,48,.10);transform:translateY(-2px)}
.rel-card img{width:100%;aspect-ratio:3/2;object-fit:cover;display:block}
.rel-card span{display:block;padding:12px 14px;font-size:13.5px;color:#26364a;line-height:1.5}
@media (max-width:820px){.rel-cases{grid-template-columns:1fr 1fr;gap:12px}}
@media (max-width:520px){.rel-cases{grid-template-columns:1fr}}
/* 面包屑点击区放大（移动端易点） */
.crumb a{display:inline-block;padding:8px 3px;margin:-8px 0}

/* 表单同意行 */
.agree{display:flex;align-items:flex-start;gap:8px;font-size:13px;color:#5b6b7c;line-height:1.6;margin:4px 0 14px}
.agree input{margin-top:3px;flex:0 0 auto;width:15px;height:15px}
.agree a{color:#1c6ea9}

/* HTML 站点地图 */
.site-map-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:30px;margin-top:28px}
.map-col h3{font-size:17px;margin:0 0 14px;color:#16232f}
.map-col ul{list-style:none;padding:0;margin:0}
.map-col li{margin-bottom:9px}
.map-col a{color:#43536a;text-decoration:none;font-size:14.5px}
.map-col a:hover{color:#1c6ea9;text-decoration:underline}
.map-cases{margin-top:18px}
.map-cases .map-col ul{columns:3;column-gap:26px}
.map-cases .map-col li{break-inside:avoid}
@media (max-width:820px){.site-map-grid{grid-template-columns:1fr}.map-cases .map-col ul{columns:1}}

/* 返回顶部 */
.to-top{position:fixed;right:22px;bottom:92px;width:44px;height:44px;border-radius:50%;border:1px solid var(--line);
  background:#fff;color:#43536a;font-size:18px;line-height:1;cursor:pointer;box-shadow:0 6px 18px rgba(16,32,48,.12);
  opacity:0;visibility:hidden;transition:opacity .2s ease,visibility .2s ease,transform .2s ease;z-index:60}
.to-top.show{opacity:1;visibility:visible}
.to-top:hover{transform:translateY(-2px);border-color:var(--accent)}
@media (max-width:820px){.to-top{right:14px;bottom:96px}}


/* ============================================================
   移动端压缩：解决页面过长（仅 ≤640px 生效，桌面端不变）
   ============================================================ */
@media (max-width: 640px) {
  /* 1) 版块上下留白收紧：10 个版块 × (60-36)×2 省约 480px */
  .section { padding: 36px 0; }
  .sec-head { margin-bottom: 20px; }

  /* 2) 案例总览：46 张卡改「左图右文」紧凑行，从 18 屏降到约 4 屏 */
  #caseGrid { gap: 10px; }
  #caseGrid .case-item {
    display: flex; flex-direction: row; align-items: center; gap: 12px;
    padding: 8px; border: 1px solid var(--line); border-radius: 8px; background: #fff;
  }
  #caseGrid .case-item img {
    width: 84px; height: 62px; flex: 0 0 84px; aspect-ratio: auto;
    border-radius: 5px; object-fit: cover;
  }
  #caseGrid .case-item figcaption { padding: 0; font-size: 13px; line-height: 1.35; }
  #caseGrid .case-item figcaption span { display: none; }
  #caseGrid .case-item figcaption em { display: block; margin-top: 2px; font-size: 11.5px; }

  /* 3) 其他案例墙：移动端两列，卡片变窄 */
  .case-grid:not(#caseGrid) { grid-template-columns: 1fr 1fr; gap: 12px; }
  .case-grid:not(#caseGrid) .case-item figcaption { padding: 9px 10px; font-size: 12.5px; line-height: 1.4; }
  .case-grid:not(#caseGrid) .case-item figcaption span { font-size: 11px; padding: 1px 6px; margin-right: 4px; }
  .case-grid:not(#caseGrid) .case-item figcaption em { font-size: 11.5px; margin-top: 3px; }

  /* 4) 业务卡图片限高，避免每张图占 230px+ */
  .biz-card img { max-height: 168px; object-fit: cover; }
  .biz-body { padding: 18px 18px 20px; }

  /* 5) 长清单两列（仅条目 ≥7 条的列表，用 :has 判断；老浏览器自动退化为单列） */
  .ticks:has(> li:nth-child(7)) { columns: 2; column-gap: 16px; }
  .ticks:has(> li:nth-child(7)) li { break-inside: avoid; font-size: 14px; margin-bottom: 7px; }

  /* 6) 页脚：手机上二维码扫自己屏幕没意义，隐藏；导航改两列 */
  .f-qr-band { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr !important; gap: 18px 20px; }
  .footer-bottom { margin-top: 22px; padding-top: 14px; font-size: 12px; }
  .f-brand p { font-size: 12.5px; }
  /* 7) 修复：页脚两列后英文品牌名不换行，导致 390px 下横向溢出 137px */
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)) !important; gap: 18px 18px; }
  .footer-grid > * { min-width: 0; }
  .f-brand { grid-column: 1 / -1; }
  .f-brand .brand-en { white-space: normal; overflow-wrap: anywhere; font-size: 7px; letter-spacing: .06em; line-height: 1.5; }
  .footer-grid h3 { font-size: 13px; }
  .footer-grid li { overflow-wrap: anywhere; }
  /* 表格最小宽度收窄，减少横向滚动 */
  .cmp { min-width: 560px; }

  /* 8) 表格 → 卡片（手机上不用左右滑） */
  .cmp.cmp-cards { display: block; min-width: 0; border: 0; background: transparent; }
  .cmp.cmp-cards thead { display: none; }
  .cmp.cmp-cards tbody { display: block; }
  .cmp.cmp-cards tr {
    display: block; margin-bottom: 10px; padding: 12px 14px;
    border: 1px solid var(--line); border-radius: 10px; background: #fff;
  }
  .cmp.cmp-cards tr:last-child { margin-bottom: 0; }
  .cmp.cmp-cards th, .cmp.cmp-cards td {
    display: block; padding: 0; border: 0; white-space: normal;
    font-size: 14px; line-height: 1.6;
  }
  .cmp.cmp-cards tr > *:first-child {
    font-size: 15.5px; font-weight: 700; color: var(--ink); margin-bottom: 7px;
  }
  .cmp.cmp-cards td { color: #43536a; margin-top: 5px; }
  .cmp.cmp-cards td::before {
    content: attr(data-label) "：";
    color: #8b97a3; font-weight: 600; font-size: 13px;
  }
  .cmp.cmp-cards td:empty { display: none; }
  .table-wrap { border: 0; background: transparent; }

}

/* 内页首屏带实拍大图（沥青页等） */
.page-hero--img{position:relative;overflow:hidden;background:#0a1620;padding:104px 0 92px}
.page-hero--img .page-hero-bg{position:absolute;inset:0;z-index:0}
.page-hero--img .page-hero-bg img{width:100%;height:100%;object-fit:cover;object-position:center 50%;display:block}
.page-hero--lq .page-hero-bg img{object-position:center 26%}
.page-hero--hx .page-hero-bg img{object-position:center 58%}
.page-hero--img::after{content:"";position:absolute;inset:0;z-index:1;
  background:linear-gradient(100deg,rgba(8,22,34,.92) 0%,rgba(8,22,34,.82) 42%,rgba(8,22,34,.58) 72%,rgba(8,22,34,.42) 100%)}
.page-hero--img .wrap{position:relative;z-index:2}
.page-hero--img .crumb a{color:rgba(255,255,255,.72)}
.page-hero--img h1{text-shadow:0 2px 12px rgba(0,0,0,.35)}
@media (max-width:640px){
  .page-hero--img{padding:64px 0 52px}
  .page-hero--img::after{background:linear-gradient(180deg,rgba(8,22,34,.85) 0%,rgba(8,22,34,.78) 100%)}
  .page-hero--img .page-hero-bg img{object-position:center 26%}
}

/* 设备与材料：两张实拍 */
.eq-strip{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:24px 0 30px}
.eq-strip figure{margin:0;border-radius:10px;overflow:hidden;background:#eef2f6;border:1px solid var(--line)}
.eq-strip img{width:100%;aspect-ratio:3/2;object-fit:cover;display:block}
.eq-strip figcaption{font-size:13px;color:var(--muted);padding:9px 12px;line-height:1.5}
@media (max-width:640px){
  .eq-strip{grid-template-columns:1fr;gap:12px;margin:18px 0 22px}
  .eq-strip img{aspect-ratio:16/9}
}
/* 近期项目卡：带缩略图 */
.proj--img{display:grid;grid-template-columns:104px 1fr;grid-template-areas:"thumb head" "thumb body" "thumb foot";column-gap:14px;align-items:start}
.proj-thumb{grid-area:thumb;width:104px;height:78px;object-fit:cover;border-radius:8px;display:block}
.proj--img .proj-no{grid-area:head}
.proj--img h3{grid-area:body;margin-top:4px}
.proj--img p{grid-area:body;margin-top:26px}
.proj--img .proj-tag{grid-area:head;margin-left:34px}
.proj--img .proj-more{grid-area:foot}
@media (max-width:640px){
  .proj-thumb{width:88px;height:66px}
  .proj--img{grid-template-columns:88px 1fr}
}

@media (max-width:640px){
  .page-hero--lq .page-hero-bg img{object-position:22% 30%}
  .page-hero--hx .page-hero-bg img{object-position:center 62%}
}