/* COLUMBLUE 新陆乱撞 · 备案站样式 */
:root{
  --navy:#0E1A2B;
  --navy-2:#16263C;
  --gold:#C6A15B;
  --paper:#F6F4EF;
  --white:#FFFFFF;
  --ink:#1A2230;
  --muted:#6B7280;
  --line:rgba(14,26,43,.10);
  --line-light:rgba(255,255,255,.18);
  --max:1160px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;padding:0;
  font-family:"Inter","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  color:var(--ink);background:var(--white);
  font-size:16px;line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
p{margin:0 0 1.1em;}
h1,h2,h3,h4{margin:0;font-weight:600;letter-spacing:-.01em;line-height:1.28;}
ul,ol{margin:0;padding:0;list-style:none;}

/* 布局 */
.wrap{width:100%;max-width:var(--max);margin:0 auto;padding:0 28px;}
.section{padding:104px 0;}
.section--paper{background:var(--paper);}
.section--tight{padding:72px 0;}
.rule{height:1px;background:var(--line);border:0;margin:0;}

/* 眉标 */
.eyebrow{
  display:inline-flex;align-items:center;gap:12px;
  font-size:12px;letter-spacing:.22em;text-transform:uppercase;
  color:var(--gold);font-weight:600;margin-bottom:26px;
}
.eyebrow::before{content:"";width:28px;height:1px;background:var(--gold);display:block;}

/* 标题 */
.title{font-size:clamp(30px,4.4vw,50px);line-height:1.22;letter-spacing:-.02em;}
.title--sm{font-size:clamp(24px,3vw,34px);}
.lede{font-size:17px;color:var(--muted);max-width:62ch;margin-top:22px;line-height:1.85;}

/* 头部 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--navy);
  border-bottom:1px solid var(--line-light);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  height:76px;gap:24px;
}
.brand{display:flex;align-items:center;gap:12px;min-width:0;}
.brand img{width:46px;height:auto;flex:none;}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-en{font-size:15px;font-weight:700;letter-spacing:.14em;color:#fff;}
.brand-cn{font-size:12px;letter-spacing:.18em;color:rgba(255,255,255,.62);margin-top:4px;}

.nav{display:flex;align-items:center;gap:34px;}
.nav a{
  font-size:14px;color:rgba(255,255,255,.78);
  padding:6px 0;position:relative;transition:color .25s var(--ease);
}
.nav a::after{
  content:"";position:absolute;left:0;bottom:-2px;width:0;height:1px;
  background:var(--gold);transition:width .3s var(--ease);
}
.nav a:hover,.nav a[aria-current="page"]{color:#fff;}
.nav a:hover::after,.nav a[aria-current="page"]::after{width:100%;}

.nav-toggle{
  display:none;width:44px;height:40px;border:1px solid var(--line-light);
  background:transparent;border-radius:2px;cursor:pointer;padding:0;
  align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:1.5px;background:#fff;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:1.5px;background:#fff;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* 首屏 */
.hero{
  position:relative;background:var(--navy);color:#fff;overflow:hidden;
  padding:128px 0 112px;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(1100px 520px at 78% -10%,rgba(198,161,91,.20),transparent 62%),
    radial-gradient(760px 420px at 6% 108%,rgba(198,161,91,.10),transparent 60%);
  pointer-events:none;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:100% 96px;
  pointer-events:none;
}
.hero .wrap{position:relative;z-index:2;}
.hero h1{
  font-size:clamp(36px,6vw,68px);line-height:1.14;letter-spacing:-.03em;
  max-width:15em;margin:0;
}
.hero h1 em{font-style:normal;color:var(--gold);}
.nb{display:inline-block;}
.hero p{
  margin-top:30px;font-size:clamp(15px,1.6vw,18px);
  color:rgba(255,255,255,.74);max-width:44em;line-height:1.9;
}
.hero-actions{display:flex;gap:18px;flex-wrap:wrap;margin-top:44px;}
.btn{
  display:inline-flex;align-items:center;gap:10px;
  padding:15px 30px;border-radius:2px;font-size:14px;font-weight:500;
  letter-spacing:.045em;transition:all .28s var(--ease);border:1px solid transparent;
}
.btn--gold{background:var(--gold);color:#101a28;}
.btn--gold:hover{background:#d3ae67;}
.btn--ghost{border-color:rgba(255,255,255,.34);color:#fff;}
.btn--ghost:hover{border-color:#fff;background:rgba(255,255,255,.06);}

/* 数据/事实条 */
.facts{
  border-top:1px solid var(--line-light);
  margin-top:88px;padding-top:36px;
  display:grid;grid-template-columns:repeat(4,1fr);gap:28px;
}
.fact .k{font-size:12px;letter-spacing:.18em;color:rgba(255,255,255,.5);text-transform:uppercase;}
.fact .v{font-size:19px;color:#fff;margin-top:8px;font-weight:600;letter-spacing:.01em;}

/* 三列 */
.cols{display:grid;grid-template-columns:repeat(3,1fr);gap:0;margin-top:64px;
  border-top:1px solid var(--line);}
.col{
  padding:36px 32px 40px 0;border-right:1px solid var(--line);
}
.col:last-child{border-right:0;padding-right:0;}
.col:not(:first-child){padding-left:32px;}
.col .num{font-size:12px;letter-spacing:.16em;color:var(--gold);font-weight:600;}
.col h3{font-size:20px;margin:16px 0 12px;}
.col p{font-size:15px;color:var(--muted);margin:0;line-height:1.85;}

/* 分栏图文 */
.split{display:grid;grid-template-columns:1fr 1fr;gap:72px;align-items:start;}
.split--reverse .split-media{order:2;}

/* 列表行 */
.rows{margin-top:56px;border-top:1px solid var(--line);}
.row{
  display:grid;grid-template-columns:180px 1fr auto;gap:28px;align-items:baseline;
  padding:30px 0;border-bottom:1px solid var(--line);
  transition:padding .3s var(--ease),background .3s var(--ease);
}
.row:hover{padding-left:10px;}
.row .when{font-size:13px;letter-spacing:.06em;color:var(--gold);font-weight:600;}
.row h3{font-size:21px;margin:0 0 6px;}
.row p{margin:0;color:var(--muted);font-size:14.5px;line-height:1.8;max-width:56ch;}
.row .where{font-size:13px;color:var(--muted);white-space:nowrap;}

/* 定义列表 */
.dl{margin:0;border-top:1px solid var(--line);}
.dl div{display:grid;grid-template-columns:180px 1fr;gap:24px;padding:18px 0;border-bottom:1px solid var(--line);}
.dl dt{font-size:13px;color:var(--muted);letter-spacing:.04em;margin:0;}
.dl dd{margin:0;font-size:15px;color:var(--ink);}

/* 引用块 */
.note{
  border-left:2px solid var(--gold);padding:4px 0 4px 24px;
  color:var(--muted);font-size:14.5px;line-height:1.9;margin:32px 0 0;max-width:70ch;
}

/* 页头（内页） */
.page-head{
  background:var(--navy);color:#fff;padding:96px 0 76px;position:relative;overflow:hidden;
}
.page-head::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(820px 380px at 82% 0%,rgba(198,161,91,.16),transparent 64%);
  pointer-events:none;
}
.page-head .wrap{position:relative;z-index:2;}
.page-head h1{font-size:clamp(30px,4.6vw,52px);line-height:1.2;letter-spacing:-.02em;}
.page-head p{color:rgba(255,255,255,.7);margin-top:18px;max-width:52em;font-size:16px;line-height:1.85;}
.crumb{font-size:12px;letter-spacing:.14em;color:rgba(255,255,255,.45);margin-bottom:26px;text-transform:uppercase;}
.crumb a:hover{color:var(--gold);}

/* 正文排版 */
.prose{max-width:74ch;}
.prose h2{font-size:clamp(22px,2.4vw,28px);margin:56px 0 18px;}
.prose h2:first-child{margin-top:0;}
.prose h3{font-size:18px;margin:34px 0 12px;}
.prose p{color:#3A4250;font-size:15.5px;line-height:1.95;}
.prose li{color:#3A4250;font-size:15.5px;line-height:1.95;padding-left:18px;position:relative;margin-bottom:10px;}
.prose li::before{content:"";position:absolute;left:0;top:.72em;width:6px;height:1px;background:var(--gold);}
.prose strong{font-weight:600;color:var(--ink);}

/* 服务条目 */
.svc{border-top:1px solid var(--line);margin-top:8px;}
.svc article{padding:40px 0;border-bottom:1px solid var(--line);display:grid;grid-template-columns:120px 1fr;gap:32px;}
.svc .no{font-size:13px;letter-spacing:.14em;color:var(--gold);font-weight:600;padding-top:4px;}
.svc h2{font-size:22px;margin:0 0 12px;}
.svc p{margin:0;color:var(--muted);font-size:15px;line-height:1.9;max-width:66ch;}
.svc .meta{display:flex;gap:26px;flex-wrap:wrap;margin-top:18px;font-size:13px;color:var(--muted);}
.svc .meta span::before{content:"·";color:var(--gold);margin-right:10px;}

/* 联系 */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:start;}
.contact-block h2{font-size:15px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);font-weight:600;margin-bottom:18px;}
.contact-block p{font-size:17px;line-height:1.9;margin:0 0 6px;color:var(--ink);}
.contact-block a{border-bottom:1px solid var(--line);transition:border-color .25s;}
.contact-block a:hover{border-color:var(--gold);}
.map-frame{
  margin-top:64px;border:1px solid var(--line);height:340px;background:
  linear-gradient(rgba(14,26,43,.03),rgba(14,26,43,.03)),
  repeating-linear-gradient(0deg,transparent 0 39px,rgba(14,26,43,.08) 39px 40px),
  repeating-linear-gradient(90deg,transparent 0 39px,rgba(14,26,43,.08) 39px 40px);
  display:flex;align-items:center;justify-content:center;
}
.map-frame span{font-size:13px;color:var(--muted);letter-spacing:.08em;}

/* CTA */
.cta{background:var(--navy);color:#fff;padding:96px 0;}
.cta h2{font-size:clamp(26px,3.6vw,40px);line-height:1.28;}
.cta p{color:rgba(255,255,255,.7);margin-top:18px;font-size:16px;max-width:52em;}
.cta .btn{margin-top:36px;}

/* 页脚 */
.site-footer{background:var(--paper);border-top:1px solid var(--line);padding:64px 0 40px;}
.footer-top{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:56px;padding-bottom:44px;border-bottom:1px solid var(--line);}
.footer-brand{display:flex;gap:14px;align-items:flex-start;}
.footer-brand img{width:46px;}
.footer-brand .en{font-size:14px;font-weight:700;letter-spacing:.14em;color:var(--ink);}
.footer-brand .cn{font-size:12px;letter-spacing:.16em;color:var(--muted);margin-top:4px;}
.footer-desc{font-size:13.5px;color:var(--muted);line-height:1.9;margin-top:16px;max-width:34em;}
.footer-col h3{font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);font-weight:600;margin-bottom:16px;}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:14px;color:var(--ink);transition:color .2s;}
.footer-col a:hover{color:var(--gold);}
.footer-info{display:grid;grid-template-columns:repeat(2,1fr);gap:8px 40px;margin-top:32px;font-size:13px;color:var(--muted);line-height:1.9;}
.footer-bottom{
  display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;
  margin-top:28px;font-size:12.5px;color:var(--muted);letter-spacing:.02em;
}
.footer-bottom a{color:var(--muted);border-bottom:1px solid var(--line);}
.footer-bottom a:hover{color:var(--ink);border-color:var(--gold);}

/* 显现动画 */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .8s var(--ease),transform .8s var(--ease);}
.reveal.in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none;}
  html{scroll-behavior:auto;}
}

/* 响应式 */
@media (max-width:980px){
  .section{padding:80px 0;}
  .hero{padding:96px 0 80px;}
  .facts{grid-template-columns:repeat(2,1fr);gap:24px 20px;margin-top:64px;}
  .cols{grid-template-columns:1fr;}
  .col{border-right:0;border-bottom:1px solid var(--line);padding:28px 0;}
  .col:not(:first-child){padding-left:0;}
  .split{grid-template-columns:1fr;gap:40px;}
  .split--reverse .split-media{order:0;}
  .contact-grid{grid-template-columns:1fr;gap:48px;}
  .footer-top{grid-template-columns:1fr;gap:36px;}
  .row{grid-template-columns:1fr;gap:10px;}
  .row .where{white-space:normal;}
  .svc article{grid-template-columns:1fr;gap:12px;}
  .dl div{grid-template-columns:1fr;gap:6px;}
}
@media (max-width:860px){
  .nav{
    position:fixed;inset:76px 0 auto 0;background:var(--navy);
    flex-direction:column;align-items:flex-start;gap:0;
    padding:8px 28px 24px;border-bottom:1px solid var(--line-light);
    transform:translateY(-8px);opacity:0;pointer-events:none;
    transition:opacity .25s var(--ease),transform .25s var(--ease);
  }
  .nav.is-open{opacity:1;transform:none;pointer-events:auto;}
  .nav a{width:100%;padding:16px 0;font-size:15px;border-bottom:1px solid rgba(255,255,255,.08);}
  .nav a::after{display:none;}
  .nav-toggle{display:flex;}
  .wrap{padding:0 22px;}
  .brand img{width:38px;}
  .footer-info{grid-template-columns:1fr;}
}