/* 站群管理系统 · 营销型站点基础样式
   主题色由页面内联的 --brand 变量注入，同一套模板可渲染出不同配色的站点 */

:root{
  --brand:#2f6df0;
  --ink:#1f2733;
  --ink-soft:#5a6675;
  --line:#e6ebf1;
  --bg:#ffffff;
  --bg-soft:#f6f8fb;
  --radius:12px;
  --shadow:0 1px 3px rgba(20,30,50,.06),0 6px 24px rgba(20,30,50,.06);
  --maxw:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{line-height:1.35;margin:0 0 .6em;font-weight:700}
p{margin:0 0 1em}
.container{max-width:var(--maxw);margin:0 auto;padding:0 20px}
.section{padding:64px 0}
.section-soft{background:var(--bg-soft)}
.section-title{text-align:center;margin-bottom:12px;font-size:30px}
.section-sub{text-align:center;color:var(--ink-soft);margin-bottom:40px;font-size:15px}
.grid{display:grid;gap:20px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}

/* 按钮 */
.btn{
  display:inline-block;padding:13px 28px;border-radius:10px;font-weight:600;font-size:15px;
  border:1px solid transparent;cursor:pointer;transition:.2s;line-height:1.4;
}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px)}
.btn-outline{background:#fff;color:var(--brand);border-color:var(--brand)}
.btn-outline:hover{background:var(--brand);color:#fff}

/* 头部 */
.site-header{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 1px 3px rgba(20,30,50,.04)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:70px;gap:24px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px;flex-shrink:0}
.brand img{height:36px;width:auto;max-width:220px;object-fit:contain}
.nav{display:flex;gap:20px;align-items:center;flex-wrap:nowrap}
.nav a{font-size:15px;color:var(--ink-soft);position:relative;padding:4px 0;white-space:nowrap}
.nav a:hover,.nav a.active{color:var(--brand)}
.nav a.active::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--brand);border-radius:2px}
.header-cta{display:flex;align-items:center;gap:10px;flex-shrink:0}
.header-phone{font-weight:700;color:var(--brand);font-size:16px;white-space:nowrap}

/* 首屏 */
.hero{
  background:linear-gradient(135deg,var(--brand) 0%,color-mix(in srgb,var(--brand) 70%,#7c5cff) 100%);
  color:#fff;padding:78px 0 86px;position:relative;overflow:hidden;
}
.hero::after{content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;border-radius:50%;background:rgba(255,255,255,.08)}
.hero-inner{position:relative;z-index:1;display:grid;grid-template-columns:1.15fr .85fr;gap:44px;align-items:center}
.hero h1{font-size:38px;margin-bottom:16px;letter-spacing:.5px}
.hero .lead{font-size:17px;opacity:.94;margin-bottom:26px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:24px}
.hero .btn-outline{background:transparent;color:#fff;border-color:rgba(255,255,255,.75)}
.hero .btn-outline:hover{background:#fff;color:var(--brand)}
.hero-badges{display:flex;gap:22px;flex-wrap:wrap;font-size:14px;opacity:.95}
.hero-badges span::before{content:"✓ ";font-weight:700}

/* 表单卡 */
.lead-card{background:#fff;border-radius:16px;padding:26px;box-shadow:0 18px 50px rgba(15,25,45,.22);color:var(--ink)}
.lead-card h3{font-size:19px;margin-bottom:4px}
.lead-card .tip{font-size:13px;color:var(--ink-soft);margin-bottom:16px}
.lead-card input,.lead-card textarea,.lead-card select{
  width:100%;padding:11px 13px;border:1px solid var(--line);border-radius:9px;font-size:14.5px;
  font-family:inherit;margin-bottom:12px;background:#fbfcfe;transition:.15s;
}
.lead-card input:focus,.lead-card textarea:focus,.lead-card select:focus{
  outline:none;border-color:var(--brand);background:#fff;box-shadow:0 0 0 3px color-mix(in srgb,var(--brand) 12%,transparent);
}
.lead-card textarea{min-height:78px;resize:vertical}
.lead-card .btn{width:100%;border-radius:9px}
.lead-card .privacy{font-size:12px;color:var(--ink-soft);margin:10px 0 0;text-align:center}

/* 卡片 */
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);transition:.2s}
.card:hover{transform:translateY(-3px);box-shadow:0 6px 30px rgba(20,30,50,.1)}
.card h4{margin:0 0 8px;font-size:17px}
.card p{margin:0;color:var(--ink-soft);font-size:14.5px}
.card .icon{
  width:46px;height:46px;border-radius:11px;display:flex;align-items:center;justify-content:center;
  background:color-mix(in srgb,var(--brand) 12%,#fff);color:var(--brand);font-size:21px;font-weight:700;margin-bottom:14px;
}

/* 痛点 */
.pain-item{display:flex;gap:12px;align-items:flex-start;padding:14px 0;border-bottom:1px dashed var(--line)}
.pain-item:last-child{border-bottom:none}
.pain-item .x{color:#e2473a;font-weight:700;flex-shrink:0}
.pain-item .ok{color:#12b5a5;font-weight:700;flex-shrink:0}

/* 产品 */
.product{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff;box-shadow:var(--shadow);transition:.2s;display:flex;flex-direction:column}
.product:hover{transform:translateY(-4px);box-shadow:0 10px 34px rgba(20,30,50,.12)}
.product .thumb{
  height:158px;display:flex;align-items:center;justify-content:center;font-size:40px;font-weight:800;
  background:linear-gradient(135deg,color-mix(in srgb,var(--brand) 14%,#fff),color-mix(in srgb,var(--brand) 5%,#fff));
  color:var(--brand);
}
.product .body{padding:18px;flex:1;display:flex;flex-direction:column}
.product h4{margin:0 0 6px;font-size:16.5px}
.product .spec{font-size:12.5px;color:var(--brand);background:color-mix(in srgb,var(--brand) 9%,#fff);padding:3px 9px;border-radius:6px;display:inline-block;margin-bottom:10px}
.product p{font-size:14px;color:var(--ink-soft);margin:0 0 14px;flex:1}
.product .more{color:var(--brand);font-size:14px;font-weight:600}

/* 数字 */
.stat{text-align:center;padding:26px 12px}
.stat b{display:block;font-size:34px;color:var(--brand);line-height:1.2}
.stat span{font-size:14px;color:var(--ink-soft)}

/* 流程 */
.step{text-align:center;position:relative}
.step .n{
  width:46px;height:46px;border-radius:50%;background:var(--brand);color:#fff;display:flex;
  align-items:center;justify-content:center;font-weight:700;margin:0 auto 14px;font-size:18px;
}
.step h4{font-size:16px;margin-bottom:6px}
.step p{font-size:14px;color:var(--ink-soft);margin:0}

/* 案例 */
.case{border:1px solid var(--line);border-radius:var(--radius);padding:22px;background:#fff;box-shadow:var(--shadow)}
.case .tag{font-size:12px;color:var(--brand);font-weight:700;letter-spacing:.5px}
.case h4{margin:6px 0 8px;font-size:17px}
.case p{margin:0;color:var(--ink-soft);font-size:14.5px}

/* 新闻 */
.news-item{display:flex;gap:16px;padding:16px 0;border-bottom:1px solid var(--line)}
.news-item:last-child{border-bottom:none}
.news-date{flex-shrink:0;width:62px;text-align:center;background:var(--bg-soft);border-radius:9px;padding:7px 0;height:fit-content}
.news-date b{display:block;font-size:20px;color:var(--brand);line-height:1.1}
.news-date span{font-size:12px;color:var(--ink-soft)}
.news-body h4{margin:0 0 5px;font-size:16px}
.news-body p{margin:0;font-size:14px;color:var(--ink-soft)}

/* FAQ */
.faq{border:1px solid var(--line);border-radius:var(--radius);background:#fff;overflow:hidden}
.faq details{border-bottom:1px solid var(--line)}
.faq details:last-child{border-bottom:none}
.faq summary{padding:16px 20px;cursor:pointer;font-weight:600;font-size:15.5px;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:12px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--brand);font-size:20px;font-weight:400;flex-shrink:0}
.faq details[open] summary::after{content:"−"}
.faq .answer{padding:0 20px 16px;color:var(--ink-soft);font-size:14.5px;margin:0}

/* CTA 带 */
.cta-band{background:linear-gradient(135deg,var(--ink) 0%,#2a3543 100%);color:#fff;text-align:center;padding:60px 0}
.cta-band h2{font-size:28px;margin-bottom:10px}
.cta-band p{opacity:.85;margin-bottom:24px}

/* 页脚 */
.site-footer{background:#151d29;color:#a9b4c4;padding:52px 0 24px;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px;margin-bottom:32px}
.site-footer h4{color:#fff;font-size:15.5px;margin-bottom:14px}
.site-footer ul{list-style:none;padding:0;margin:0}
.site-footer li{margin:7px 0}
.site-footer a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:20px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px}

/* ============ 友情链接（设计方案 3.5）============ */
.friend-links-bar{border-top:1px solid rgba(255,255,255,.1);padding:18px 0;display:flex;gap:14px;align-items:flex-start}
.friend-links-label{flex-shrink:0;font-size:13px;color:rgba(255,255,255,.75);padding-top:2px}
.friend-links-row{display:flex;flex-wrap:wrap;gap:8px 16px}
.friend-links-row a{font-size:13px;color:rgba(255,255,255,.72)}
.friend-links-row a:hover{color:#fff}
.friend-links-row a.more{color:var(--brand);opacity:.9}
/* 友链列表页 */
.friend-links-page{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:14px;margin-top:24px;padding:0;list-style:none}
.friend-links-page li{background:var(--bg-soft);border:1px solid var(--line);border-radius:10px;padding:14px 16px;display:flex;flex-direction:column;gap:4px}
.friend-links-page a{font-size:15px;font-weight:600;color:var(--ink)}
.friend-links-page a:hover{color:var(--brand)}
.friend-url{font-size:12.5px;color:var(--ink-soft);word-break:break-all}
.friend-badge{align-self:flex-start;font-size:11px;color:var(--ink-soft);border:1px solid var(--line);border-radius:4px;padding:1px 6px}
@media(max-width:640px){
  .friend-links-bar{flex-direction:column;gap:8px}
  .friend-links-page{grid-template-columns:1fr}
}

/* 面包屑 */
.breadcrumb{background:var(--bg-soft);padding:14px 0;font-size:13.5px;color:var(--ink-soft);border-bottom:1px solid var(--line)}
.breadcrumb a:hover{color:var(--brand)}

/* 文章内容 */
.article{max-width:820px;margin:0 auto}
.article h1{font-size:30px;margin-bottom:10px}
.article-meta{color:var(--ink-soft);font-size:13.5px;margin-bottom:26px;padding-bottom:16px;border-bottom:1px solid var(--line)}
.article-body p{margin-bottom:1.3em;font-size:16.5px;line-height:1.9;color:#2a3543}
.article-body{margin-bottom:40px}

/* 悬浮 CTA（移动端） */
.float-cta{position:fixed;right:16px;bottom:16px;z-index:60;display:none;flex-direction:column;gap:10px}
.float-cta a{
  width:56px;height:56px;border-radius:50%;background:var(--brand);color:#fff;display:flex;
  align-items:center;justify-content:center;box-shadow:0 6px 20px rgba(20,30,50,.28);font-size:12px;text-align:center;line-height:1.2;
}

/* 响应式 */
/* 导航加到 8 项后，中等宽度屏会先挨挤，这一档单独收一收间距与字号 */
@media(max-width:1160px){
  .header-inner{gap:16px}
  .nav{gap:14px}
  .nav a{font-size:14px}
  .header-phone{font-size:15px}
  .brand img{max-width:180px}
}
@media(max-width:900px){
  .hero-inner{grid-template-columns:1fr}
  .g3,.g4{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .nav{display:none}
  .float-cta{display:flex}
  .hero h1{font-size:28px}
  .section{padding:46px 0}
  .section-title{font-size:24px}
}
@media(max-width:600px){
  .g2,.g3,.g4{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .header-phone{display:none}
}

/* ============ 图库图片 ============
   统一规范：
     1. 所有图片 object-fit:cover —— 图库里图片尺寸各异，不裁切会撑破卡片
     2. 占位块 .img-ph 与真实图片共用同一套尺寸，有图没图版式不跳动
     3. 图片懒加载 + 渐显，避免首屏被图片拖慢
*/
.img-ph{
  display:flex;align-items:center;justify-content:center;
  font-size:34px;font-weight:800;color:var(--brand);
  background:linear-gradient(135deg,color-mix(in srgb,var(--brand) 14%,#fff),color-mix(in srgb,var(--brand) 5%,#fff));
}

/* 产品缩略图（首页 / 列表页） */
.thumb-img{
  width:100%;height:158px;object-fit:cover;display:block;
  background:var(--bg-soft);
}
.thumb-img.img-ph{height:158px}
.thumb-lg,.thumb-lg.img-ph{height:300px}

/* 案例配图 */
.case-img{
  width:100%;height:170px;object-fit:cover;display:block;
  border-radius:var(--radius) var(--radius) 0 0;margin-bottom:16px;
  background:var(--bg-soft);
}
.case-img.img-ph{
  height:170px;border-radius:var(--radius) var(--radius) 0 0;margin-bottom:16px;
}

/* 资讯列表缩略图 */
.news-thumb{flex-shrink:0;display:block;text-decoration:none}
.news-thumb img,.news-thumb .img-ph{
  width:132px;height:86px;object-fit:cover;border-radius:9px;display:block;
  background:var(--bg-soft);
}
.news-thumb .img-ph{font-size:26px}

/* 资讯详情页封面 */
.article-cover{margin:22px 0 28px}
.article-cover img{
  width:100%;max-height:420px;object-fit:cover;
  border-radius:var(--radius);display:block;background:var(--bg-soft);
}

/* 关于我们 */
.about-lead{display:grid;grid-template-columns:1.35fr 1fr;gap:34px;align-items:center;margin-top:26px}
.about-img{
  width:100%;height:260px;object-fit:cover;border-radius:var(--radius);display:block;
  background:var(--bg-soft);
}
.about-img.img-ph{height:260px}
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.gallery-img{
  width:100%;height:150px;object-fit:cover;border-radius:10px;display:block;
  background:var(--bg-soft);
}
.gallery-img.img-ph{height:150px}

/* 相关文章卡片 */
.rel-card{display:block;text-decoration:none;color:inherit;padding:0;overflow:hidden}
.rel-card:hover{transform:translateY(-4px);box-shadow:0 10px 34px rgba(20,30,50,.12)}
.rel-thumb{
  width:100%;height:140px;object-fit:cover;display:block;background:var(--bg-soft);
}
.rel-thumb.img-ph{height:140px}
.rel-body{padding:16px 18px 20px}
.rel-body h4{margin:0 0 6px;font-size:16px;line-height:1.5}
.rel-body p{margin:0;font-size:14px;color:var(--ink-soft)}

@media(max-width:900px){
  .about-lead{grid-template-columns:1fr}
  .news-thumb img,.news-thumb .img-ph{width:104px;height:70px}
}
@media(max-width:600px){
  .gallery{grid-template-columns:1fr 1fr}
  .news-thumb{display:none}
}

/* ============ 服务范围 / 解决方案 / 优势 ============ */

/* 服务项要点 */
.svc-points{list-style:none;padding:0;margin:14px 0 0}
.svc-points li{position:relative;padding-left:20px;font-size:14px;color:var(--ink-soft);margin:7px 0}
.svc-points li::before{content:"✓";position:absolute;left:0;color:var(--brand);font-weight:700}
.svc-out{
  margin-top:14px;font-size:13px;color:var(--brand);
  background:color-mix(in srgb,var(--brand) 9%,#fff);padding:6px 10px;border-radius:7px;
}

/* 解决方案：图文左右交替 */
.solution{
  display:grid;grid-template-columns:.85fr 1.15fr;gap:34px;align-items:center;
  padding:26px;margin-bottom:24px;border:1px solid var(--line);
  border-radius:var(--radius);background:#fff;box-shadow:var(--shadow);
}
.solution.alt .solution-img,.solution.alt .img-ph{order:2}
.solution-img{
  width:100%;height:230px;object-fit:cover;border-radius:10px;display:block;background:var(--bg-soft);
}
.solution-img.img-ph{height:230px}
.solution h3{font-size:20px;margin:6px 0 8px}
.sol-tag{
  display:inline-block;font-size:12.5px;font-weight:700;color:var(--brand);
  background:color-mix(in srgb,var(--brand) 10%,#fff);padding:3px 10px;border-radius:6px;
}
.sol-pain{font-size:14.5px;color:var(--ink-soft);background:var(--bg-soft);border-radius:9px;padding:10px 14px;margin-bottom:14px}
.sol-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-bottom:14px}
.sol-step{border:1px dashed var(--line);border-radius:10px;padding:11px 12px}
.sol-step b{display:block;font-size:13.5px;color:var(--brand);margin-bottom:3px;line-height:1.5}
.sol-step span{font-size:12.5px;color:var(--ink-soft)}
.sol-result{border-left:3px solid var(--brand);padding-left:12px;font-size:14.5px;color:var(--ink-soft)}
.sol-chip{font-size:12.5px;color:var(--ink-soft);border:1px solid var(--line);border-radius:999px;padding:3px 12px}

/* 优势页对比表 */
.cmp-wrap{overflow-x:auto}
.cmp{
  width:100%;border-collapse:collapse;background:#fff;
  border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;font-size:14.5px;
}
.cmp th,.cmp td{padding:14px 18px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
.cmp thead th{background:var(--bg-soft);font-weight:700;white-space:nowrap}
.cmp tbody tr:last-child td{border-bottom:none}
.cmp td.ours{color:#0f9d8f}
.cmp td.ours::before{content:"✓ ";font-weight:700}
.cmp td.others{color:var(--ink-soft)}
.cmp td.others::before{content:"✕ ";color:#e2473a;font-weight:700}

/* 服务承诺清单 */
.commit-list{list-style:none;padding:0;margin:0}
.commit-list li{position:relative;padding:12px 0 12px 28px;border-bottom:1px dashed var(--line);font-size:15px}
.commit-list li:last-child{border-bottom:none}
.commit-list li::before{content:"✓";position:absolute;left:0;color:var(--brand);font-weight:700}

/* ============ 城市分站 ============ */
.city-bar{
  background:linear-gradient(90deg,color-mix(in srgb,var(--brand) 12%,#fff),#fff);
  border-bottom:1px solid var(--line);
}
.city-bar .container{
  display:flex;align-items:center;gap:12px;flex-wrap:wrap;
  padding:11px 20px;font-size:14.5px;color:var(--ink-soft);
}
.city-tag{
  background:var(--brand);color:#fff;font-weight:700;
  padding:3px 11px;border-radius:6px;font-size:13px;
}
.city-back{margin-left:auto;color:var(--brand);font-weight:600;text-decoration:none;white-space:nowrap}
.city-back:hover{text-decoration:underline}

.city-links{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}
.city-link{
  padding:8px 18px;border:1px solid var(--line);border-radius:999px;
  background:#fff;color:var(--ink);text-decoration:none;font-size:14.5px;
  transition:.18s;
}
.city-link:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px)}
.city-link.is-current{background:var(--brand);border-color:var(--brand);color:#fff;font-weight:600}

/* 页脚服务区域：城市多，两列排布省地方 */
.city-footer{display:grid;grid-template-columns:1fr 1fr;gap:2px 10px}

@media(max-width:600px){
  .city-footer{grid-template-columns:1fr}
  .city-back{margin-left:0}
}

/* ==================================================================
   建筑工程模板 construction：结构级视觉覆盖
   通用类（.card/.product/.btn ...）先重定义，保证子页面也是同一套气质；
   .cn-* 是首页与骨架专属组件。全站零圆角、硬边框、等宽数字、蓝图和警示条纹。
   ================================================================== */
:root{
  --cn-dark:#151b21;
  --cn-dark2:#202a33;
  --cn-yellow:#f2b705;
  --cn-paper:#f1f0ec;
  --cn-line:#39434d;
  --maxw:1240px;
  --radius:0px;
  --shadow:none;
  --ink:#1b232c;
  --ink-soft:#5c6672;
  --line:#d8d7d1;
  --bg:#ffffff;
  --bg-soft:#f1f0ec;
}
body.cn-body{
  font-family:"Microsoft YaHei","PingFang SC","Noto Sans CJK SC",-apple-system,"Segoe UI",Arial,sans-serif;
  background:#fff;
}
h1,h2,h3,h4{font-weight:800;letter-spacing:-.01em}
.container{max-width:var(--maxw)}
.section{padding:72px 0}
.section-soft{background:var(--cn-paper)}
.section-title{
  text-align:left;font-size:29px;border-left:6px solid var(--cn-yellow);
  padding-left:16px;margin-bottom:12px;
}
.section-sub{text-align:left;margin-bottom:34px;color:var(--ink-soft)}
.btn{border-radius:0;padding:13px 26px;font-weight:700;font-size:15px;box-shadow:3px 3px 0 rgba(0,0,0,.16)}
.btn:hover{transform:translate(-1px,-1px);box-shadow:4px 4px 0 rgba(0,0,0,.2)}
.btn-primary{background:var(--cn-yellow);color:#151b21;border-color:var(--cn-yellow)}
.btn-primary:hover{filter:brightness(1.05);background:var(--cn-yellow)}
.btn-outline{background:transparent;color:var(--ink);border:2px solid var(--cn-dark)}
.btn-outline:hover{background:var(--cn-dark);color:#fff}
.card{
  border:1px solid var(--line);border-radius:0;box-shadow:none;
  border-top:3px solid var(--cn-dark);
}
.card:hover{transform:none;box-shadow:4px 4px 0 var(--cn-paper)}
.card .icon{
  border-radius:0;background:var(--cn-dark);color:var(--cn-yellow);
  font-family:ui-monospace,Consolas,monospace;
}
.product{border:1px solid var(--line);border-radius:0;box-shadow:none}
.product:hover{transform:none;box-shadow:5px 5px 0 var(--cn-paper)}
.product .thumb,.product .thumb-img.img-ph{background:var(--cn-paper);color:var(--cn-dark)}
.product .spec{border-radius:0;background:var(--cn-yellow);color:#151b21}
.product .more{color:var(--cn-dark)}
.stat b{font-family:ui-monospace,Consolas,monospace;color:var(--cn-dark);font-size:36px}
.step .n{border-radius:0;background:var(--cn-dark);color:var(--cn-yellow);font-family:ui-monospace,Consolas,monospace}
.cta-band{background:var(--cn-yellow);color:#151b21}
.cta-band .btn-primary{background:var(--cn-dark);color:#fff;border-color:var(--cn-dark)}
.cta-band .btn-primary:hover{background:#000}
.breadcrumb{background:var(--cn-dark);color:#c8d0d8;border-bottom:none}
.breadcrumb a:hover{color:var(--cn-yellow)}
.faq details{border-radius:0;border-bottom:1px solid var(--line)}
.city-link{border-radius:0;border:1px solid var(--cn-dark);color:var(--ink)}
.city-link:hover,.city-link.is-current{background:var(--cn-dark);color:#fff;border-color:var(--cn-dark)}
.img-ph{background:repeating-linear-gradient(45deg,#e9e8e3 0 8px,#f3f2ee 8px 16px);color:#7d848c}
.thumb-img{border-radius:0}
.case-img,.solution-img,.about-img,.gallery-img{border-radius:0}
.cmp th,.cmp td{border-bottom:1px solid var(--line)}
.cmp thead th{background:var(--cn-dark);color:#fff}
.sol-chip{border-radius:0}
.commit-list li::before,.svc-points li::before{color:var(--cn-yellow);background:var(--cn-dark);padding:0 3px}

/* ---- 骨架：四层头部 ---- */
.cn-topline{background:#0d1217;color:#9aa6b2;font-size:12.5px;letter-spacing:.03em}
.cn-topline-inner{display:flex;justify-content:space-between;align-items:center;gap:16px;height:34px}
.cn-topline b{color:var(--cn-yellow);font-weight:700}
.cn-topline-left b{font-family:ui-monospace,Consolas,monospace;letter-spacing:.08em}
.cn-topline-right b{font-size:14px;color:#fff;margin-left:6px}
.cn-masthead{background:#fff;border-bottom:1px solid var(--line)}
.cn-masthead-inner{display:flex;align-items:center;gap:22px;min-height:92px}
.cn-logo img{height:52px;max-width:210px;object-fit:contain}
.cn-brandtext{border-left:3px solid var(--cn-yellow);padding-left:20px;display:flex;flex-direction:column;gap:2px}
.cn-brandtext strong{font-size:23px;font-weight:800;line-height:1.25}
.cn-brandtext span{font-size:12.5px;color:var(--ink-soft);letter-spacing:.06em}
.cn-quote{
  margin-left:auto;background:var(--cn-yellow);color:#151b21;font-weight:800;
  padding:13px 22px;font-size:15px;white-space:nowrap;
}
.cn-quote i{font-style:normal;margin-left:8px}
.cn-quote:hover{background:#151b21;color:#fff}
.cn-navbar{background:var(--cn-dark);overflow-x:auto}
.cn-nav-inner{display:flex;align-items:stretch;min-width:900px}
.cn-nav-item{
  flex:1;display:flex;align-items:center;justify-content:center;gap:7px;
  height:52px;color:#c3ccd5;font-size:14.5px;font-weight:600;white-space:nowrap;
  border-right:1px solid rgba(255,255,255,.09);position:relative;
}
.cn-nav-item:first-child{border-left:1px solid rgba(255,255,255,.09)}
.cn-nav-item em{font-style:normal;font-family:ui-monospace,Consolas,monospace;font-size:11px;color:#7d8a97}
.cn-nav-item:hover{background:var(--cn-dark2);color:#fff}
.cn-nav-item.on{background:var(--cn-yellow);color:#151b21}
.cn-nav-item.on em{color:#6a5300}
.cn-hazard{
  height:9px;
  background:repeating-linear-gradient(115deg,var(--cn-yellow) 0 16px,#151b21 16px 32px);
}
.cn-citybar{background:var(--cn-paper);border-bottom:1px solid var(--line)}
.cn-citybar .container{display:flex;align-items:center;gap:12px;flex-wrap:wrap;padding:11px 20px;font-size:14px}
.cn-citytag{background:var(--cn-dark);color:var(--cn-yellow);font-weight:700;padding:3px 10px;font-size:12.5px}
.cn-citybar a{margin-left:auto;font-weight:700}

/* ---- 首屏 ---- */
.cn-hero{
  background:var(--cn-dark);color:#fff;position:relative;overflow:hidden;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:40px 40px;
}
.cn-hero::before{content:"";position:absolute;left:0;top:0;bottom:0;width:7px;background:var(--cn-yellow)}
.cn-hero-inner{display:grid;grid-template-columns:1.15fr .85fr;gap:52px;align-items:center;padding:76px 20px 80px;position:relative;z-index:1}
.cn-eyebrow{display:inline-block;font-family:ui-monospace,Consolas,monospace;font-size:12px;letter-spacing:.16em;color:var(--cn-yellow);border:1px solid rgba(242,183,5,.5);padding:5px 11px;margin-bottom:20px}
.cn-hero h1{font-size:41px;line-height:1.28;margin-bottom:16px}
.cn-hero-lead{font-size:17px;color:#b9c4ce;max-width:620px;margin-bottom:28px}
.cn-hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:30px}
.cn-hero .btn-outline{border-color:rgba(255,255,255,.6);color:#fff}
.cn-hero .btn-outline:hover{background:#fff;color:#151b21}
.cn-hero-tags{display:flex;flex-wrap:wrap;gap:0}
.cn-hero-tags span{font-size:13px;color:#98a5b2;padding:6px 15px;border-left:1px solid var(--cn-line)}
.cn-hero-tags span:first-child{border-left:none;padding-left:0}
.cn-hero-panel{background:#202a33;border:1px solid var(--cn-line);padding:0}
.cn-panel-head{display:flex;justify-content:space-between;align-items:center;background:var(--cn-yellow);color:#151b21;padding:12px 18px}
.cn-panel-head b{font-size:15px}
.cn-panel-head span{font-family:ui-monospace,Consolas,monospace;font-size:11px;letter-spacing:.12em}
.cn-panel-nums{display:grid;grid-template-columns:1fr 1fr}
.cn-panel-nums div{padding:18px;border-right:1px solid var(--cn-line);border-bottom:1px solid var(--cn-line)}
.cn-panel-nums div:nth-child(2n){border-right:none}
.cn-panel-nums div:nth-child(n+3){border-bottom:none}
.cn-panel-nums b{display:block;font-family:ui-monospace,Consolas,monospace;font-size:27px;color:var(--cn-yellow);line-height:1.2}
.cn-panel-nums span{font-size:12.5px;color:#9aa7b3}
.cn-panel-note{padding:14px 18px;margin:0;font-size:13px;color:#b9c4ce;border-bottom:1px solid var(--cn-line)}
.cn-panel-img{height:150px;object-fit:cover;width:100%}
.cn-panel-img.img-ph{height:150px;font-size:20px}
.cn-panel-stamp{padding:22px 18px;font-family:ui-monospace,Consolas,monospace;font-size:13px;letter-spacing:.14em;color:#5e6b77;line-height:1.7}
.cn-ticker{background:var(--cn-yellow);color:#151b21}
.cn-ticker .container{display:flex;align-items:center;gap:16px;flex-wrap:wrap;padding:14px 20px;font-size:14px;font-weight:600}
.cn-ticker b{font-size:16px}
.cn-ticker i{font-style:normal;opacity:.45}

/* ---- 通用小组件 ---- */
.cn-split{display:grid;grid-template-columns:.72fr 1.28fr;gap:56px;align-items:start}
.cn-split-head{position:sticky;top:20px}
.cn-bignum{display:block;font-family:ui-monospace,Consolas,monospace;font-size:54px;font-weight:800;line-height:1;color:var(--cn-yellow);-webkit-text-stroke:1px var(--cn-dark);margin-bottom:12px}
.cn-split-head h2{font-size:31px;margin-bottom:12px}
.cn-split-head p{color:var(--ink-soft);font-size:15px;max-width:330px}
.cn-textlink{display:inline-block;margin-top:12px;font-weight:700;border-bottom:2px solid var(--cn-yellow);padding-bottom:3px}
.cn-sec-head{display:flex;align-items:flex-start;gap:22px;margin-bottom:34px}
.cn-sec-head .cn-bignum{font-size:44px;margin:0}
.cn-sec-head h2{font-size:30px;margin-bottom:5px}
.cn-sec-head p{color:var(--ink-soft);font-size:14.5px;margin:0}

/* ---- 承接范围 ---- */
.cn-scope{background:#fff;padding:78px 0}
.cn-scope-grid{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--cn-dark);border-left:1px solid var(--cn-dark)}
.cn-scope-cell{border-right:1px solid var(--cn-dark);border-bottom:1px solid var(--cn-dark);padding:26px 28px;min-height:180px;position:relative;background:#fff;transition:.18s}
.cn-scope-cell:hover{background:var(--cn-paper)}
.cn-scope-cell em{font-style:normal;font-family:ui-monospace,Consolas,monospace;font-size:12px;color:var(--cn-yellow);background:var(--cn-dark);padding:2px 7px}
.cn-scope-cell h3{font-size:19px;margin:14px 0 8px}
.cn-scope-cell p{font-size:14px;color:var(--ink-soft);margin-bottom:14px}
.cn-scope-cell a{font-size:13.5px;font-weight:700;color:var(--cn-dark);border-bottom:1px solid var(--cn-yellow)}

/* ---- 工程业绩时间轴 ---- */
.cn-works{background:var(--cn-paper);padding:78px 0}
.cn-timeline{border-top:2px solid var(--cn-dark)}
.cn-tl-item{display:grid;grid-template-columns:96px 1fr 190px;gap:24px;align-items:center;padding:22px 0;border-bottom:1px solid #cbcac4}
.cn-tl-mark{border-left:5px solid var(--cn-yellow);padding-left:14px}
.cn-tl-mark b{display:block;font-family:ui-monospace,Consolas,monospace;font-size:32px;line-height:1;color:var(--cn-dark)}
.cn-tl-mark span{font-size:10.5px;letter-spacing:.18em;color:var(--ink-soft)}
.cn-tl-body h3{font-size:20px;margin-bottom:6px}
.cn-tl-body p{font-size:14.5px;color:var(--ink-soft);margin:0}
.cn-tl-img{height:110px;object-fit:cover;width:100%;border:1px solid #cbcac4}
.cn-tl-img.img-ph{height:110px;font-size:22px}

/* ---- 施工流程箭头条 ---- */
.cn-flow{background:#fff;padding:78px 0}
.cn-flow-row{display:grid;grid-template-columns:repeat(6,1fr);border:1px solid var(--cn-dark)}
.cn-flow-step{position:relative;padding:24px 16px;border-right:1px solid var(--cn-dark);min-height:120px;background:#fff}
.cn-flow-step:last-child{border-right:none}
.cn-flow-step:not(:last-child)::after{content:"›";position:absolute;right:-9px;top:50%;transform:translateY(-50%);font-size:24px;color:var(--cn-yellow);background:#fff;line-height:1;z-index:2}
.cn-flow-step b{display:block;font-family:ui-monospace,Consolas,monospace;font-size:30px;line-height:1;color:var(--cn-dark);margin-bottom:12px}
.cn-flow-step span{font-size:14.5px;font-weight:700;line-height:1.5}

/* ---- 资质标准表 ---- */
.cn-standards{background:var(--cn-paper);padding:78px 0}
.cn-table{border:1px solid var(--cn-dark)}
.cn-table-head,.cn-table-row{display:grid;grid-template-columns:210px 1fr}
.cn-table-head{background:var(--cn-dark);color:var(--cn-yellow);font-size:13px;letter-spacing:.08em}
.cn-table-head span{padding:12px 18px}
.cn-table-row{border-top:1px solid #cbcac4;font-size:14.5px;background:#fff}
.cn-table-row span{padding:13px 18px}
.cn-table-row span:first-child{font-weight:700;border-right:1px solid #cbcac4}
.cn-table-row span:last-child{color:var(--ink-soft)}

/* ---- 工程项行列表 ---- */
.cn-rows{background:#fff;padding:78px 0}
.cn-rowlist{border-top:2px solid var(--cn-dark)}
.cn-row{display:grid;grid-template-columns:52px 1.1fr 1fr 1.6fr 28px;gap:16px;align-items:center;padding:16px 8px;border-bottom:1px solid var(--line);transition:.15s}
.cn-row:hover{background:var(--cn-paper);padding-left:16px}
.cn-row em{font-style:normal;font-family:ui-monospace,Consolas,monospace;font-size:13px;color:var(--ink-soft)}
.cn-row b{font-size:16px}
.cn-row-spec{font-size:12.5px;color:var(--cn-dark);background:var(--cn-yellow);padding:3px 8px;justify-self:start;white-space:nowrap}
.cn-row-desc{font-size:13.5px;color:var(--ink-soft)}
.cn-row i{font-style:normal;font-size:20px;color:var(--cn-dark)}
.cn-row-more{margin-top:28px}

/* ---- 关于 ---- */
.cn-about{background:var(--cn-dark);color:#fff;padding:70px 0}
.cn-about-inner{display:grid;grid-template-columns:1.2fr .8fr;gap:56px;align-items:center}
.cn-about h2{font-size:30px;margin-bottom:14px}
.cn-about p{color:#b9c4ce;font-size:15.5px;max-width:640px}
.cn-about .cn-textlink{color:var(--cn-yellow);border-color:var(--cn-yellow)}
.cn-about-nums{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--cn-line);border:1px solid var(--cn-line)}
.cn-about-nums div{background:var(--cn-dark2);padding:22px}
.cn-about-nums b{display:block;font-family:ui-monospace,Consolas,monospace;font-size:28px;color:var(--cn-yellow);line-height:1.2}
.cn-about-nums span{font-size:12.5px;color:#9aa7b3}

/* ---- 资讯 ---- */
.cn-news{background:#fff;padding:78px 0}
.cn-news-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 34px}
.cn-news-lead{grid-row:span 4;background:var(--cn-paper);padding:30px;border-left:5px solid var(--cn-yellow);display:flex;flex-direction:column;justify-content:center}
.cn-news-lead h3{font-size:23px;margin:12px 0}
.cn-news-lead p{color:var(--ink-soft);font-size:14.5px}
.cn-news-date{font-family:ui-monospace,Consolas,monospace;font-size:12px;color:var(--ink-soft)}
.cn-news-more{font-weight:700;font-size:14px;margin-top:14px}
.cn-news-line{display:grid;grid-template-columns:100px 1fr 20px;gap:14px;align-items:center;padding:15px 0;border-bottom:1px solid var(--line);font-size:14.5px}
.cn-news-line span{font-family:ui-monospace,Consolas,monospace;font-size:12px;color:var(--ink-soft)}
.cn-news-line b{font-weight:600}
.cn-news-line i{font-style:normal;color:var(--cn-yellow)}
.cn-news-line:hover b{text-decoration:underline}

/* ---- FAQ ---- */
.cn-faq{background:var(--cn-paper);padding:78px 0}
.cn-faq-list details{border-bottom:1px solid #cbcac4;background:#fff}
.cn-faq-list summary{padding:16px 20px;font-weight:700;cursor:pointer;list-style:none;display:flex;gap:16px;align-items:center}
.cn-faq-list summary::-webkit-details-marker{display:none}
.cn-faq-list summary em{font-style:normal;font-family:ui-monospace,Consolas,monospace;font-size:12px;color:#151b21;background:var(--cn-yellow);padding:2px 6px}
.cn-faq-list p{padding:0 20px 18px;font-size:14.5px;color:var(--ink-soft);margin:0}

/* ---- 城市 / CTA / 表单 ---- */
.cn-cities{background:#fff;padding:44px 0;border-top:1px solid var(--line)}
.cn-cities h3{font-size:17px;margin-bottom:16px}
.cn-cities div{display:flex;flex-wrap:wrap;gap:9px}
.cn-cities a{border:1px solid var(--line);padding:7px 15px;font-size:13.5px;background:var(--cn-paper)}
.cn-cities a:hover,.cn-cities a.cur{background:var(--cn-dark);color:#fff}
.cn-cta{background:var(--cn-yellow);padding:52px 0;color:#151b21}
.cn-cta h2{font-size:29px;margin-bottom:8px}
.cn-cta p{margin-bottom:22px;font-size:15.5px}
.cn-cta .btn-primary{background:var(--cn-dark);color:#fff;border-color:var(--cn-dark)}
.cn-lead-section{background:var(--cn-paper);padding:66px 0}
.cn-lead-title{display:flex;align-items:baseline;gap:14px;flex-wrap:wrap;margin-bottom:26px;border-bottom:2px solid var(--cn-dark);padding-bottom:14px}
.cn-lead-title span{font-family:ui-monospace,Consolas,monospace;font-size:32px;font-weight:800;color:var(--cn-yellow);-webkit-text-stroke:1px var(--cn-dark)}
.cn-lead-title h2{font-size:26px;margin:0}
.cn-lead-title p{font-size:14px;color:var(--ink-soft);margin:0}
.cn-lead{display:grid;grid-template-columns:.85fr 1.15fr;background:#fff;border:1px solid var(--cn-dark)}
.cn-lead-side{background:var(--cn-dark);color:#fff;padding:30px}
.cn-lead-side b{font-size:19px;color:var(--cn-yellow)}
.cn-lead-side p{font-size:14px;color:#b9c4ce;margin:10px 0 18px}
.cn-lead-side ul{list-style:none;padding:0;margin:0}
.cn-lead-side li{font-size:13.5px;color:#d5dce2;padding:7px 0 7px 18px;position:relative}
.cn-lead-side li::before{content:"■";position:absolute;left:0;color:var(--cn-yellow);font-size:10px}
.cn-lead-form{display:grid;grid-template-columns:1fr 1fr;gap:0 14px;padding:30px;align-content:start}
.cn-lead-form input,.cn-lead-form select,.cn-lead-form textarea{
  width:100%;padding:12px 13px;border:1px solid var(--line);border-radius:0;font-size:14.5px;
  font-family:inherit;margin-bottom:13px;background:#fff;
}
.cn-lead-form input:focus,.cn-lead-form select:focus,.cn-lead-form textarea:focus{outline:none;border-color:var(--cn-dark);box-shadow:2px 2px 0 var(--cn-yellow)}
.cn-lead-form textarea{grid-column:1 / -1;min-height:76px;resize:vertical}
.cn-lead-form .btn{grid-column:1 / -1;border-radius:0}
.cn-lead-privacy{grid-column:1 / -1;font-size:12px;color:var(--ink-soft);text-align:center;margin:8px 0 0}
.cn-lead-tip{grid-column:1 / -1;color:#0d7a5f;font-weight:700;text-align:center}
.cn-lead-form[style*="none"]{display:none}

/* ---- 页脚 / 悬浮 ---- */
.cn-footer{background:#0d1217;color:#9aa6b2;padding:56px 0 0;font-size:14px}
.cn-footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:36px;padding-bottom:34px}
.cn-footer h4{color:#fff;font-size:19px;margin-bottom:12px}
.cn-footer h5{color:var(--cn-yellow);font-size:14px;margin-bottom:14px;letter-spacing:.06em}
.cn-footer p{font-size:13.5px;line-height:1.8}
.cn-footer ul{list-style:none;padding:0;margin:0}
.cn-footer li{margin:8px 0;font-size:13.5px}
.cn-footer a:hover{color:var(--cn-yellow)}
.cn-footer-stamp{display:inline-block;border:1px dashed #46535f;padding:6px 12px;font-size:12.5px;margin-top:6px}
.cn-footer-addr{margin-top:12px}
.cn-footer-cities{display:grid;grid-template-columns:1fr 1fr;gap:2px 10px}
.cn-friend{display:flex;gap:16px;align-items:flex-start;border-top:1px solid #263039;padding:18px 0;font-size:13px}
.cn-friend>span{flex-shrink:0;color:var(--cn-yellow)}
.cn-friend div{display:flex;flex-wrap:wrap;gap:8px 16px}
.cn-friend a:hover{color:#fff}
.cn-footer-bottom{display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;border-top:4px solid var(--cn-yellow);padding:18px 0 22px;font-size:12.5px}
.cn-float{position:fixed;right:0;top:42%;z-index:60;display:flex;flex-direction:column}
.cn-float a{display:block;background:var(--cn-dark);color:#fff;font-size:13px;font-weight:700;line-height:1.35;text-align:center;padding:12px 13px;border-bottom:1px solid #46535f}
.cn-float a:last-child{background:var(--cn-yellow);color:#151b21;border-bottom:none}
.cn-float a:hover{filter:brightness(1.15)}

@media(max-width:1100px){
  .cn-split{grid-template-columns:1fr;gap:28px}
  .cn-split-head{position:static}
  .cn-hero-inner{grid-template-columns:1fr;gap:34px}
  .cn-flow-row{grid-template-columns:repeat(3,1fr)}
  .cn-flow-step:nth-child(3){border-right:none}
  .cn-flow-step:nth-child(-n+3){border-bottom:1px solid var(--cn-dark)}
  .cn-flow-step:not(:last-child)::after{display:none}
  .cn-about-inner{grid-template-columns:1fr;gap:30px}
  .cn-tl-item{grid-template-columns:76px 1fr}
  .cn-tl-pic{display:none}
}
@media(max-width:760px){
  .cn-topline-left{display:none}
  .cn-topline-inner{justify-content:flex-end}
  .cn-masthead-inner{flex-wrap:wrap;min-height:0;padding-top:16px;padding-bottom:16px}
  .cn-brandtext{display:none}
  .cn-quote{margin-left:auto;padding:10px 14px;font-size:13px}
  .cn-hero-inner{padding:50px 20px}
  .cn-hero h1{font-size:29px}
  .cn-scope-grid,.cn-panel-nums,.cn-about-nums,.cn-news-grid{grid-template-columns:1fr}
  .cn-scope-cell{border-right:1px solid var(--cn-dark)}
  .cn-news-lead{grid-row:auto}
  .cn-row{grid-template-columns:40px 1fr 24px;gap:10px}
  .cn-row-spec,.cn-row-desc{display:none}
  .cn-table-head,.cn-table-row{grid-template-columns:110px 1fr}
  .cn-footer-grid{grid-template-columns:1fr 1fr;gap:24px}
  .cn-lead{grid-template-columns:1fr}
  .cn-lead-form{grid-template-columns:1fr}
  .cn-float{display:none}
}