/* roulang page: index */
:root{
  --brand:#2C6E93;
  --brand-deep:#1D4A63;
  --brand-light:#EAF1F5;
  --accent:#C87A4B;
  --green:#3E8F7A;
  --bg:#F6F8FA;
  --card:#FFFFFF;
  --line:#E3E9EE;
  --text:#26333C;
  --muted:#5C7A8A;
  --r-card:14px;
  --r-img:12px;
  --r-btn:8px;
  --sh-1:0 1px 2px rgba(29,74,99,.06);
  --sh-2:0 12px 28px -14px rgba(29,74,99,.18);
  --sh-3:0 18px 36px -16px rgba(29,74,99,.24);
  --font:"PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
a{color:var(--brand);text-decoration:none;transition:color .25s ease;}
a:hover{color:var(--brand-deep);}
img{max-width:100%;height:auto;display:block;}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4{margin:0;font-weight:600;color:var(--text);}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
.container{max-width:1200px;padding-left:20px;padding-right:20px;}
@media (max-width:767.98px){.container{padding-left:16px;padding-right:16px;}}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1030;
  background:#fff;border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 22px -18px rgba(29,74,99,.5);}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:72px;gap:24px;}
.brand{display:flex;flex-direction:column;line-height:1.15;}
.brand-mark{font-size:19px;font-weight:600;letter-spacing:.5px;color:var(--brand-deep);}
.brand-sub{font-size:11px;letter-spacing:2px;color:var(--muted);text-transform:uppercase;}
.nav-links{display:flex;align-items:center;gap:32px;}
.nav-links .nav-link{
  position:relative;display:inline-block;padding:26px 0;font-size:15px;color:var(--text);background:none;border:0;
}
.nav-links .nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:18px;height:2px;background:var(--brand);
  transform:scaleX(0);transform-origin:left;transition:transform .25s ease;
}
.nav-links .nav-link:hover{color:var(--brand);}
.nav-links .nav-link:hover::after,
.nav-links .nav-link.active::after{transform:scaleX(1);}
.nav-links .nav-link.active{color:var(--brand);}
.nav-right{display:flex;align-items:center;gap:16px;}
.btn-line-brand{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:38px;padding:0 18px;font-size:14px;color:var(--brand);
  border:1px solid var(--brand);border-radius:999px;background:#fff;
  transition:background .25s ease,color .25s ease,box-shadow .25s ease;
}
.btn-line-brand:hover{background:var(--brand);color:#fff;box-shadow:var(--sh-2);}
.nav-toggle{
  width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:var(--r-btn);background:#fff;color:var(--brand-deep);font-size:18px;
}
.m-nav{width:86vw;max-width:360px;background:#fff;}
.m-nav .offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px;}
.m-nav .btn-close{box-shadow:none;}
.m-nav-list a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:52px;padding:0 20px;font-size:15px;color:var(--text);border-bottom:1px solid var(--line);
}
.m-nav-list a.active{color:var(--brand);font-weight:600;}
.m-nav-foot{padding:20px;}
.m-nav-foot .btn-solid{width:100%;}

/* ---------- buttons ---------- */
.btn-solid{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 26px;border-radius:var(--r-btn);border:1px solid var(--accent);
  background:var(--accent);color:#fff;font-size:15px;font-weight:600;
  transition:background .25s ease,box-shadow .25s ease,transform .25s ease;
}
.btn-solid:hover{background:#B76C40;border-color:#B76C40;color:#fff;box-shadow:var(--sh-2);transform:translateY(-2px);}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 24px;border-radius:var(--r-btn);
  border:1px solid rgba(255,255,255,.72);background:transparent;color:#fff;font-size:15px;
  transition:background .25s ease,color .25s ease;
}
.btn-ghost:hover{background:#fff;color:var(--brand-deep);border-color:#fff;}
.btn-line{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-btn);
  border:1px solid var(--brand);color:var(--brand);background:#fff;font-size:15px;
  transition:background .25s ease,color .25s ease;
}
.btn-line:hover{background:var(--brand);color:#fff;}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--brand);}
.text-link i{transition:transform .25s ease;font-size:12px;}
.text-link:hover{color:var(--brand-deep);}
.text-link:hover i{transform:translateX(4px);}

/* ---------- section base ---------- */
.section{padding:96px 0;}
.section-alt{background:#fff;}
@media (max-width:767.98px){.section{padding:60px 0;}}
.step-tag{
  display:inline-flex;align-items:center;gap:10px;font-size:12px;letter-spacing:1px;
  color:var(--muted);margin-bottom:14px;
}
.step-tag i{display:inline-block;width:22px;height:1px;background:var(--line);}
.sec-head{max-width:720px;margin-bottom:44px;}
.sec-head h2{
  font-size:clamp(24px,3vw,34px);line-height:1.3;
  position:relative;padding-left:16px;
}
.sec-head h2::before{
  content:"";position:absolute;left:0;top:.34em;width:4px;height:.72em;background:var(--brand);border-radius:2px;
}
.sec-head p{margin-top:14px;color:var(--muted);font-size:15px;max-width:660px;}
.sec-head.center{max-width:760px;margin-left:auto;margin-right:auto;text-align:center;}
.sec-head.center h2{padding-left:0;}
.sec-head.center h2::before{display:none;}

/* ---------- hero ---------- */
.hero{
  position:relative;margin-top:72px;min-height:620px;display:flex;align-items:center;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center right;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(29,74,99,.86) 0%,rgba(29,74,99,.66) 46%,rgba(29,74,99,.18) 100%);
}
.hero .container{position:relative;z-index:2;padding-top:84px;padding-bottom:72px;}
.hero-inner{max-width:660px;}
.hero-label{
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.28);
  color:#DCEAF2;font-size:12.5px;letter-spacing:.6px;
}
.hero h1{
  margin-top:20px;color:#fff;font-size:clamp(30px,4.2vw,48px);line-height:1.2;font-weight:600;
}
.hero-sub{margin-top:18px;color:rgba(255,255,255,.86);font-size:17px;max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero-metrics{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px;
  margin-top:56px;padding-top:28px;border-top:1px solid rgba(255,255,255,.22);
}
.hero-metrics .num{
  font-size:26px;font-weight:600;color:#fff;font-variant-numeric:tabular-nums;line-height:1.2;
}
.hero-metrics .num small{font-size:13px;font-weight:400;margin-left:3px;}
.hero-metrics .cap{margin-top:6px;font-size:12.5px;color:rgba(255,255,255,.68);}
@media (max-width:991.98px){
  .hero-metrics{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;}
}
@media (max-width:767.98px){
  .hero{min-height:420px;background-position:62% center;}
  .hero .container{padding-top:56px;padding-bottom:48px;}
  .hero-sub{font-size:15.5px;}
  .hero-actions .btn-solid,.hero-actions .btn-ghost{width:100%;}
  .hero-metrics{margin-top:36px;padding-top:22px;}
  .hero-metrics .num{font-size:22px;}
}

/* ---------- capability cards ---------- */
.cap-card{
  height:100%;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:box-shadow .25s ease,transform .25s ease;
}
.cap-card:hover{box-shadow:var(--sh-3);transform:translateY(-3px);}
.cap-icon{
  width:40px;height:40px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  border:1px solid var(--brand-light);background:var(--brand-light);color:var(--brand);font-size:17px;
}
.cap-card h3{margin-top:18px;font-size:20px;line-height:1.4;}
.cap-card p{margin-top:10px;color:var(--muted);font-size:14.5px;}
.cap-card .text-link{margin-top:auto;padding-top:18px;}
.cap-feature{
  padding:0;overflow:hidden;background:var(--card);
}
.cap-feature .cap-media{aspect-ratio:16/9;overflow:hidden;}
.cap-feature .cap-media img{width:100%;height:100%;object-fit:cover;border-radius:0;}
.cap-feature .cap-body{padding:26px 28px 28px;}
.cap-feature h3{margin-top:0;font-size:22px;}
.cap-strip{
  display:flex;flex-wrap:wrap;gap:10px;margin-top:16px;
}
.chip{
  display:inline-flex;align-items:center;padding:5px 12px;border-radius:999px;
  background:var(--brand-light);color:var(--brand);font-size:12px;letter-spacing:.4px;
}
.chip-accent{background:rgba(200,122,75,.12);color:#A65F33;}
.chip-green{background:rgba(62,143,122,.12);color:var(--green);}

/* ---------- benefit rail ---------- */
.rail-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;}
.rail-head h2{font-size:clamp(24px,3vw,34px);position:relative;padding-left:16px;}
.rail-head h2::before{content:"";position:absolute;left:0;top:.34em;width:4px;height:.72em;background:var(--brand);border-radius:2px;}
.rail-nav{display:flex;gap:10px;}
.rail-btn{
  width:36px;height:36px;border-radius:50%;border:1px solid var(--line);background:#fff;color:var(--brand);
  display:inline-flex;align-items:center;justify-content:center;font-size:13px;
  transition:border-color .25s ease,color .25s ease,box-shadow .25s ease;
}
.rail-btn:hover{border-color:var(--brand);box-shadow:var(--sh-1);}
.rail{
  display:flex;gap:24px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:6px 4px 22px;scrollbar-width:none;
}
.rail::-webkit-scrollbar{display:none;}
.rail-card{
  flex:0 0 320px;scroll-snap-align:start;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);
  transition:box-shadow .25s ease,transform .25s ease;
}
.rail-card:hover{box-shadow:var(--sh-3);transform:translateY(-3px);}
.rail-card .rail-media{aspect-ratio:3/2;overflow:hidden;}
.rail-card .rail-media img{width:100%;height:100%;object-fit:cover;}
.rail-card .rail-body{padding:20px 22px 22px;border-left:3px solid var(--brand);}
.rail-card h3{font-size:17px;}
.rail-card p{margin-top:8px;font-size:13.5px;color:var(--muted);}
.rail-card .chip{margin-top:16px;}
@media (max-width:1199.98px){.rail-card{flex:0 0 300px;}}
@media (max-width:767.98px){
  .rail-card{flex:0 0 82vw;}
  .rail-nav{display:none;}
  .rail-head{flex-direction:column;align-items:flex-start;}
}

/* ---------- milestone ---------- */
.ms-rail{position:relative;margin-top:8px;padding-top:26px;}
.ms-rail::before{
  content:"";position:absolute;left:0;right:0;top:39px;height:2px;background:var(--line);
}
.ms-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;position:relative;}
.ms-node{text-align:left;}
.ms-dot{
  width:16px;height:16px;border-radius:50%;background:#fff;border:2px solid var(--line);
  position:relative;z-index:2;margin-bottom:26px;
}
.ms-node.done .ms-dot{
  background:var(--brand);border-color:var(--brand);box-shadow:0 0 0 8px rgba(44,110,147,.12);
}
.ms-node .idx{font-size:12.5px;color:var(--muted);letter-spacing:1px;}
.ms-node h3{margin-top:6px;font-size:17px;}
.ms-node p{margin-top:8px;font-size:13.5px;color:var(--muted);}
.ms-note{margin-top:36px;display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;}
.ms-note p{font-size:14px;color:var(--muted);max-width:620px;}
@media (max-width:991.98px){
  .ms-rail::before{left:7px;right:auto;top:34px;bottom:20px;width:2px;height:auto;}
  .ms-grid{grid-template-columns:1fr;gap:30px;}
  .ms-node{padding-left:32px;position:relative;}
  .ms-dot{position:absolute;left:0;top:4px;margin-bottom:0;}
}

/* ---------- stat cards ---------- */
.stat-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:26px;
  box-shadow:var(--sh-1);height:100%;
}
.stat-card .val{
  font-size:34px;font-weight:600;color:var(--brand-deep);font-variant-numeric:tabular-nums;line-height:1.1;
}
.stat-card .val small{font-size:15px;font-weight:400;color:var(--muted);margin-left:4px;}
.stat-card .cap{margin-top:10px;font-size:14px;color:var(--muted);}
.stat-card .bar{margin-top:18px;height:6px;border-radius:999px;background:var(--brand-light);overflow:hidden;}
.stat-card .bar span{display:block;height:100%;background:var(--accent);border-radius:999px;}

/* ---------- network ---------- */
.net-figure{
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-2);aspect-ratio:4/3;
}
.net-figure img{width:100%;height:100%;object-fit:cover;}
.net-list{margin-top:22px;}
.net-list li{
  display:flex;gap:12px;padding:14px 0;border-bottom:1px solid var(--line);font-size:15px;
}
.net-list li:last-child{border-bottom:0;}
.net-list i{color:var(--brand);margin-top:6px;font-size:12px;}
.net-list span{color:var(--muted);display:block;font-size:13.5px;margin-top:2px;}

/* ---------- news ---------- */
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:36px;}
.news-head h2{font-size:clamp(24px,3vw,34px);position:relative;padding-left:16px;}
.news-head h2::before{content:"";position:absolute;left:0;top:.34em;width:4px;height:.72em;background:var(--brand);border-radius:2px;}
.news-card{
  height:100%;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:box-shadow .25s ease,transform .25s ease;
}
.news-card:hover{box-shadow:var(--sh-3);transform:translateY(-3px);}
.news-thumb{position:relative;aspect-ratio:3/2;overflow:hidden;display:block;}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.news-card:hover .news-thumb img{transform:scale(1.04);}
.news-thumb .chip{position:absolute;left:12px;top:12px;background:rgba(234,241,245,.95);}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1;}
.news-body h3{font-size:17px;line-height:1.5;}
.news-body h3 a{color:var(--text);}
.news-body h3 a:hover{color:var(--brand);}
.news-body p{margin-top:10px;font-size:13.5px;color:var(--muted);}
.news-meta{
  margin-top:auto;padding-top:18px;border-top:1px solid var(--line);margin-top:18px;
  display:flex;align-items:center;justify-content:space-between;font-size:12.5px;color:var(--muted);
}
.news-empty{
  border:1px dashed var(--line);border-radius:var(--r-card);background:#fff;
  min-height:180px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;
  text-align:center;padding:30px;
}
.news-empty p{font-size:14px;color:var(--muted);}

/* ---------- faq ---------- */
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;background:none;border:0;text-align:left;padding:22px 40px 22px 0;position:relative;
  font-size:16px;font-weight:600;color:var(--text);line-height:1.6;cursor:pointer;
}
.faq-q::after{
  content:"+";position:absolute;right:6px;top:50%;transform:translateY(-50%);
  font-size:20px;font-weight:400;color:var(--brand);transition:transform .25s ease;
}
.faq-q[aria-expanded="true"]{color:var(--brand);}
.faq-q[aria-expanded="true"]::after{transform:translateY(-50%) rotate(45deg);}
.faq-q:focus-visible{outline:2px solid var(--brand);outline-offset:3px;}
.faq-a{padding:0 60px 24px 0;font-size:15px;line-height:1.8;color:var(--muted);}

/* ---------- cta / form ---------- */
.cta-band{
  background:linear-gradient(90deg,var(--brand-deep) 0%,#2C6E93 100%);border-radius:var(--r-card);
  padding:44px;color:#fff;display:flex;flex-wrap:wrap;gap:24px;align-items:center;justify-content:space-between;
}
.cta-band h2{color:#fff;font-size:clamp(22px,2.6vw,30px);line-height:1.35;}
.cta-band p{margin-top:10px;color:rgba(255,255,255,.78);font-size:14.5px;max-width:560px;}
.form-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-2);padding:30px;
}
.form-card h3{font-size:20px;}
.form-card .hint{margin-top:8px;font-size:13.5px;color:var(--muted);}
.field{margin-top:18px;}
.field label{display:block;font-size:13px;color:var(--muted);margin-bottom:7px;}
.field .form-control,.field .form-select{
  height:44px;border:1px solid var(--line);border-radius:var(--r-btn);
  font-size:14.5px;color:var(--text);box-shadow:none;background-color:#fff;
}
.field textarea.form-control{height:auto;min-height:104px;padding-top:10px;}
.field .form-control:focus,.field .form-select:focus{
  border-color:var(--brand);box-shadow:0 0 0 3px rgba(44,110,147,.16);outline:none;
}
.field .err{display:none;margin-top:6px;font-size:13px;color:var(--accent);}
.field.has-error .err{display:block;}
.field.has-error .form-control,.field.has-error .form-select{border-color:var(--accent);}
.form-actions{margin-top:24px;display:flex;flex-wrap:wrap;gap:12px;align-items:center;}
.form-actions .btn-solid{min-width:160px;}
.form-note{font-size:12.5px;color:var(--muted);}
.form-ok{
  display:none;margin-top:18px;padding:12px 16px;border-radius:var(--r-btn);
  background:rgba(62,143,122,.1);color:var(--green);font-size:14px;
}
.form-ok.show{display:block;}

/* ---------- footer ---------- */
.site-footer{background:var(--brand-deep);color:#fff;padding:64px 0 0;margin-top:0;}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;}
.foot-brand .brand-mark{color:#fff;font-size:19px;}
.foot-brand .brand-sub{color:rgba(255,255,255,.6);}
.foot-brand p{margin-top:16px;font-size:14px;color:rgba(255,255,255,.72);line-height:1.85;max-width:340px;}
.foot-col h4{color:#fff;font-size:15px;margin-bottom:16px;letter-spacing:.5px;}
.foot-col li{line-height:30px;}
.foot-col a{color:rgba(255,255,255,.72);font-size:14px;position:relative;}
.foot-col a:hover{color:#fff;}
.foot-col a::after{
  content:"";position:absolute;left:0;bottom:-2px;width:100%;height:1px;background:#fff;
  transform:scaleX(0);transform-origin:left;transition:transform .25s ease;
}
.foot-col a:hover::after{transform:scaleX(1);}
.foot-contact li{
  display:flex;gap:10px;align-items:flex-start;color:rgba(255,255,255,.72);
  font-size:14px;line-height:30px;
}
.foot-contact i{color:rgba(255,255,255,.6);margin-top:9px;font-size:13px;}
.foot-bottom{
  margin-top:52px;border-top:1px solid rgba(255,255,255,.14);padding:22px 0;
  display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.6);
}
@media (max-width:991.98px){
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:575.98px){
  .foot-grid{grid-template-columns:1fr;}
  .site-footer{padding-top:48px;}
}
@media (max-width:767.98px){
  .cta-band{padding:28px;}
  .form-card{padding:22px;}
}

/* roulang page: article */
:root{
  --brand:#2C6E93;
  --brand-deep:#1D4A63;
  --brand-soft:#EAF1F5;
  --accent:#C87A4B;
  --green:#3E8F7A;
  --bg:#F6F8FA;
  --card:#FFFFFF;
  --line:#E3E9EE;
  --text:#26333C;
  --muted:#5C7A8A;
  --r-card:14px;
  --r-img:12px;
  --r-btn:8px;
  --sh-1:0 1px 2px rgba(29,74,99,.06);
  --sh-card:0 12px 28px -14px rgba(29,74,99,.18);
  --sh-hover:0 18px 36px -16px rgba(29,74,99,.24);
  --gap:24px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-deep);}
h1,h2,h3,h4{margin:0;font-weight:600;color:var(--text);letter-spacing:.2px;}
p{margin:0 0 1em;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media(max-width:767px){.container{padding:0 16px;}}
::selection{background:var(--brand-soft);color:var(--brand-deep);}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1040;background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 18px -14px rgba(29,74,99,.35);}
.m-nav{display:flex;align-items:center;justify-content:space-between;height:72px;gap:24px;}
.brand{display:flex;flex-direction:column;line-height:1.15;text-decoration:none;}
.brand-mark{font-size:19px;font-weight:600;color:var(--brand-deep);letter-spacing:.5px;}
.brand-sub{font-size:11px;color:var(--muted);letter-spacing:2px;}
.brand:hover .brand-mark{color:var(--brand);}
.m-nav-list{display:flex;align-items:center;gap:32px;}
.m-nav-list a{
  position:relative;display:flex;align-items:center;height:72px;
  font-size:15px;color:var(--text);
}
.m-nav-list a:hover{color:var(--brand);}
.m-nav-list a.active{color:var(--brand);}
.m-nav-list a.active::after{
  content:"";position:absolute;left:0;right:0;bottom:20px;height:2px;
  background:var(--brand);border-radius:2px;
}
.nav-actions{display:flex;align-items:center;gap:12px;}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;
  height:38px;padding:0 18px;border:1px solid var(--line);border-radius:var(--r-btn);
  font-size:14px;color:var(--brand-deep);background:#fff;transition:all .22s ease;
}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);box-shadow:var(--sh-1);}
.nav-toggle{
  width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:var(--r-btn);background:#fff;color:var(--text);
}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand);}
.offcanvas.nav-drawer{width:86vw;max-width:340px;}
.nav-drawer .drawer-brand{padding:20px 24px;border-bottom:1px solid var(--line);}
.drawer-link{
  display:flex;align-items:center;height:52px;padding:0 24px;
  font-size:15px;color:var(--text);border-bottom:1px solid var(--line);
}
.drawer-link:hover,.drawer-link.active{background:var(--brand-soft);color:var(--brand);}
.drawer-foot{padding:24px;}
@media(max-width:991px){
  .m-nav-list{display:none;}
}
@media(min-width:992px){
  .nav-toggle{display:none;}
}

/* ---------- breadcrumb ---------- */
.crumb-bar{background:#fff;border-bottom:1px solid var(--line);}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:16px 0;font-size:13px;color:var(--muted);}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--brand);}
.crumb .sep{color:#C6D3DC;}
.crumb .now{color:var(--muted);max-width:60ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ---------- article head ---------- */
.post-head{background:#fff;border-bottom:1px solid var(--line);padding:48px 0 40px;}
.post-head-inner{max-width:840px;}
.post-badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 14px;border-radius:999px;background:var(--brand-soft);
  color:var(--brand);font-size:12px;letter-spacing:.6px;
}
.post-title{font-size:clamp(26px,3.4vw,40px);line-height:1.3;margin:18px 0 16px;font-weight:600;color:var(--brand-deep);}
.post-meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px;font-size:13px;color:var(--muted);}
.post-meta .dot{width:4px;height:4px;border-radius:50%;background:#C6D3DC;display:inline-block;}

/* ---------- article layout ---------- */
.post-wrap{padding:56px 0 72px;}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 200px;gap:64px;}
.article-main{min-width:0;}
.article-paper{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:44px 48px;box-shadow:var(--sh-1);
}
@media(max-width:767px){.article-paper{padding:26px 20px;}}
.article-aside{position:relative;}
.toc{position:sticky;top:104px;}
.toc h4{font-size:13px;color:var(--muted);letter-spacing:1.4px;font-weight:600;margin-bottom:14px;}
.toc-list{display:flex;flex-direction:column;gap:2px;border-left:1px solid var(--line);}
.toc-list a{
  display:block;padding:7px 0 7px 14px;font-size:13px;line-height:1.5;
  color:var(--muted);border-left:2px solid transparent;margin-left:-1px;
  overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;
}
.toc-list a:hover{color:var(--brand);}
.toc-list a.is-active{color:var(--brand);border-left-color:var(--brand);font-weight:600;}
@media(max-width:1199px){
  .article-layout{grid-template-columns:minmax(0,1fr);}
  .article-aside{display:none;}
}
@media(min-width:1200px){
  .article-main{max-width:740px;}
}

/* ---------- article body ---------- */
.article-body{font-size:17px;line-height:1.9;color:var(--text);}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 1.15em;}
.article-body h2{
  position:relative;font-size:24px;font-weight:600;line-height:1.4;
  margin:40px 0 16px;padding-left:14px;color:var(--brand-deep);
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:8px;width:3px;height:18px;
  background:var(--brand);border-radius:2px;
}
.article-body h3{font-size:20px;font-weight:600;margin:28px 0 12px;color:var(--brand-deep);}
.article-body h4{font-size:17px;font-weight:600;margin:22px 0 10px;}
.article-body ul,.article-body ol{margin:0 0 1.15em;padding-left:22px;}
.article-body ul li{list-style:none;position:relative;padding-left:16px;line-height:1.9;margin-bottom:6px;}
.article-body ul li::before{
  content:"";position:absolute;left:0;top:13px;width:6px;height:6px;border-radius:50%;
  background:var(--brand-soft);border:1.5px solid var(--brand);
}
.article-body ol{list-style:decimal;}
.article-body ol li{line-height:1.9;margin-bottom:6px;padding-left:4px;}
.article-body ol li::marker{color:var(--brand);font-weight:600;}
.article-body blockquote{
  margin:24px 0;padding:16px 22px;background:var(--brand-soft);
  border-left:3px solid var(--brand);border-radius:0 var(--r-card) var(--r-card) 0;
  color:var(--brand-deep);font-size:16px;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:var(--r-img);margin:26px auto;}
.article-body figure{margin:26px 0;}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:10px;}
.article-body a{border-bottom:1px solid rgba(44,110,147,.35);}
.article-body a:hover{border-bottom-color:var(--brand-deep);}
.article-body strong{font-weight:600;color:var(--brand-deep);}
.article-body table{
  width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;background:#fff;
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
}
.article-body th,.article-body td{padding:12px 16px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top;}
.article-body th{background:var(--brand-soft);color:var(--brand-deep);font-weight:600;font-size:14px;}
.article-body tr:last-child td{border-bottom:none;}
.article-body pre{
  background:#1D4A63;color:#E8F1F6;padding:18px 20px;border-radius:var(--r-img);
  overflow:auto;font-size:14px;line-height:1.7;margin:22px 0;
}
.article-body code{
  background:var(--brand-soft);color:var(--brand-deep);padding:2px 6px;border-radius:4px;
  font-size:14px;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
.article-body pre code{background:transparent;color:inherit;padding:0;}
.article-body hr{border:none;border-top:1px solid var(--line);margin:36px 0;}

/* ---------- not found ---------- */
.not-found{padding:24px 0 8px;text-align:center;}
.not-found .nf-icon{
  width:56px;height:56px;margin:0 auto 18px;border-radius:50%;
  background:var(--brand-soft);color:var(--brand);display:flex;align-items:center;justify-content:center;font-size:22px;
}
.not-found h2{font-size:22px;margin-bottom:10px;}
.not-found p{color:var(--muted);font-size:15px;}
.btn-primary-x{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 26px;border-radius:var(--r-btn);background:var(--brand);color:#fff;
  font-size:15px;border:1px solid var(--brand);transition:all .22s ease;
}
.btn-primary-x:hover{background:var(--brand-deep);border-color:var(--brand-deep);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-card);}
.btn-line{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:42px;padding:0 22px;border-radius:var(--r-btn);border:1px solid var(--brand);
  color:var(--brand);background:#fff;font-size:14px;transition:all .22s ease;
}
.btn-line:hover{background:var(--brand-soft);color:var(--brand-deep);}

/* ---------- tags & foot ---------- */
.post-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:40px;padding-top:26px;border-top:1px solid var(--line);}
.post-tags .tag{
  padding:6px 14px;border-radius:999px;background:var(--bg);border:1px solid var(--line);
  font-size:13px;color:var(--muted);transition:all .2s ease;
}
.post-tags .tag:hover{background:var(--brand-soft);border-color:var(--brand-soft);color:var(--brand);}
.post-foot{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;margin-top:26px;}
.post-foot .back-link{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--brand);}
.post-foot .back-link i{transition:transform .2s ease;}
.post-foot .back-link:hover i{transform:translateX(-4px);}

/* ---------- related ---------- */
.rel-section{padding:64px 0 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;}
.section-head h2{font-size:clamp(22px,2.6vw,28px);color:var(--brand-deep);}
.section-head .more{font-size:14px;color:var(--brand);display:inline-flex;align-items:center;gap:6px;}
.section-head .more i{transition:transform .2s ease;}
.section-head .more:hover i{transform:translateX(4px);}
.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--gap);}
.rel-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);transition:transform .25s ease,box-shadow .25s ease;
  display:flex;flex-direction:column;
}
.rel-card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);}
.rel-thumb{position:relative;aspect-ratio:3/2;overflow:hidden;background:var(--brand-soft);}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.rel-card:hover .rel-thumb img{transform:scale(1.04);}
.rel-body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.rel-body .badge-x{
  align-self:flex-start;padding:4px 12px;border-radius:999px;background:var(--brand-soft);
  color:var(--brand);font-size:11px;letter-spacing:.5px;
}
.rel-body h3{font-size:17px;line-height:1.5;}
.rel-body p{font-size:13.5px;color:var(--muted);line-height:1.7;margin:0;}
.rel-body .go{margin-top:auto;font-size:13px;color:var(--brand);display:inline-flex;align-items:center;gap:6px;}
.rel-body .go i{transition:transform .2s ease;}
.rel-card:hover .rel-body .go i{transform:translateX(4px);}
@media(max-width:991px){.rel-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media(max-width:600px){.rel-grid{grid-template-columns:1fr;}}

/* ---------- cta strip ---------- */
.cta-strip{margin:64px 0 0;}
.cta-inner{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:22px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:32px 36px;box-shadow:var(--sh-1);
}
.cta-inner h2{font-size:20px;margin-bottom:8px;color:var(--brand-deep);}
.cta-inner p{margin:0;font-size:14px;color:var(--muted);}
@media(max-width:600px){.cta-inner{padding:24px 20px;}}

/* ---------- footer ---------- */
.site-footer{background:var(--brand-deep);color:#fff;margin-top:88px;padding:64px 0 28px;}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.site-footer .brand-mark{color:#fff;font-size:19px;}
.site-footer .brand-sub{color:rgba(255,255,255,.62);font-size:11px;letter-spacing:2px;}
.foot-brand p{color:rgba(255,255,255,.72);font-size:14px;line-height:1.8;margin:16px 0 0;max-width:34ch;}
.foot-col h4{font-size:14px;color:#fff;margin-bottom:16px;letter-spacing:.8px;}
.foot-col ul li{line-height:30px;}
.foot-col ul li a{color:rgba(255,255,255,.72);font-size:14px;}
.foot-col ul li a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px;}
.foot-contact li{display:flex;align-items:center;gap:10px;color:rgba(255,255,255,.72);font-size:14px;line-height:30px;}
.foot-contact li i{color:rgba(255,255,255,.55);width:16px;text-align:center;}
.foot-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.6);
}
@media(max-width:991px){
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .site-footer{margin-top:64px;padding-top:48px;}
}
@media(max-width:600px){
  .foot-grid{grid-template-columns:1fr;}
  .post-head{padding:32px 0 28px;}
  .post-wrap{padding:36px 0 48px;}
  .rel-section{padding-top:44px;}
}

/* roulang page: category1 */
:root{
  --primary:#2C6E93;
  --primary-dark:#1D4A63;
  --primary-light:#EAF1F5;
  --accent:#C87A4B;
  --teal:#3E8F7A;
  --bg:#F6F8FA;
  --card:#FFFFFF;
  --line:#E3E9EE;
  --text:#26333C;
  --muted:#5C7A8A;
  --radius-card:14px;
  --radius-img:12px;
  --radius-btn:8px;
  --shadow-flat:0 1px 2px rgba(29,74,99,.06);
  --shadow-card:0 12px 28px -14px rgba(29,74,99,.18);
  --shadow-hover:0 18px 36px -16px rgba(29,74,99,.24);
  --sec-space:96px;
  --sec-space-sm:60px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--primary);text-decoration:none;transition:color .25s ease,border-color .25s ease,background-color .25s ease;}
a:hover{color:var(--primary-dark);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:600;letter-spacing:.2px;color:var(--text);line-height:1.3;}
p{margin:0 0 14px;max-width:720px;}
p:last-child{margin-bottom:0;}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:20px;
  padding-right:20px;
}
section{position:relative;}

/* ---------- 通用按钮 ---------- */
.btn-primary,
.btn-main{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:11px 24px;
  background:var(--primary);
  color:#fff !important;
  border:1px solid var(--primary);
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:500;
  letter-spacing:.3px;
  box-shadow:var(--shadow-flat);
  transition:transform .25s ease,box-shadow .25s ease,background-color .25s ease;
}
.btn-primary:hover,.btn-main:hover{
  background:var(--primary-dark);
  border-color:var(--primary-dark);
  transform:translateY(-2px);
  box-shadow:var(--shadow-hover);
}
.btn-primary:active,.btn-main:active{transform:translateY(0);}
.btn-ghost{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:11px 24px;
  background:transparent;
  color:#fff !important;
  border:1px solid rgba(255,255,255,.7);
  border-radius:var(--radius-btn);
  font-size:15px;
  transition:background-color .25s ease,color .25s ease,transform .25s ease;
}
.btn-ghost:hover{background:rgba(255,255,255,.14);transform:translateY(-2px);}
.btn-line{
  display:inline-flex;
  align-items:center;
  gap:8px;
  min-height:44px;
  padding:10px 22px;
  border:1px solid var(--primary);
  border-radius:var(--radius-btn);
  color:var(--primary) !important;
  background:#fff;
  font-size:15px;
  transition:background-color .25s ease,color .25s ease,transform .25s ease;
}
.btn-line:hover{background:var(--primary-light);transform:translateY(-2px);}
.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  color:var(--primary);
  font-weight:500;
}
.link-arrow i{transition:transform .25s ease;font-size:12px;}
.link-arrow:hover i{transform:translateX(4px);}

/* ---------- 徽章 / 标签 ---------- */
.badge-soft{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 12px;
  border-radius:999px;
  background:var(--primary-light);
  color:var(--primary);
  font-size:12px;
  line-height:1.6;
  font-weight:500;
  letter-spacing:.3px;
}
.badge-outline{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 12px;
  border-radius:999px;
  border:1px solid var(--line);
  background:#fff;
  color:var(--muted);
  font-size:12px;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:12px;
  letter-spacing:1.4px;
  color:var(--muted);
  text-transform:uppercase;
  margin-bottom:14px;
}
.eyebrow::before{
  content:"";
  display:block;
  width:22px;
  height:1px;
  background:var(--muted);
  opacity:.6;
}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 8px 24px -18px rgba(29,74,99,.45);}
.nav-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:72px;
}
.brand{
  display:flex;
  flex-direction:column;
  line-height:1.15;
  color:var(--text);
}
.brand:hover{color:var(--primary);}
.brand-mark{
  font-size:18px;
  font-weight:600;
  letter-spacing:.5px;
}
.brand-sub{
  font-size:11px;
  color:var(--muted);
  letter-spacing:1.6px;
}
.m-nav-list{
  display:flex;
  align-items:center;
  gap:32px;
}
.m-nav-list a{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:72px;
  font-size:15px;
  color:var(--text);
  white-space:nowrap;
}
.m-nav-list a::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:20px;
  height:2px;
  background:var(--primary);
  transform:scaleX(0);
  transform-origin:center;
  transition:transform .25s ease;
}
.m-nav-list a:hover{color:var(--primary);}
.m-nav-list a:hover::after{transform:scaleX(1);}
.m-nav-list a.active{color:var(--primary);font-weight:500;}
.m-nav-list a.active::after{transform:scaleX(1);}
.nav-cta{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  height:38px;
  padding:0 20px;
  border:1px solid var(--primary);
  border-radius:999px;
  color:var(--primary);
  font-size:14px;
  background:#fff;
  transition:background-color .25s ease,color .25s ease;
}
.nav-cta:hover{background:var(--primary);color:#fff;}
.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  align-items:center;
  justify-content:center;
  border:1px solid var(--line);
  border-radius:10px;
  background:#fff;
  color:var(--text);
  font-size:18px;
}
.nav-drawer{width:320px;background:#fff;}
.nav-drawer .offcanvas-header{
  border-bottom:1px solid var(--line);
  padding:18px 20px;
}
.nav-drawer .offcanvas-body{padding:0;}
.drawer-nav{display:flex;flex-direction:column;}
.drawer-nav a{
  display:flex;
  align-items:center;
  min-height:52px;
  padding:0 20px;
  border-bottom:1px solid var(--line);
  color:var(--text);
  font-size:15px;
}
.drawer-nav a.active{color:var(--primary);font-weight:600;background:var(--primary-light);}
.d-close{
  width:40px;height:40px;border:1px solid var(--line);border-radius:10px;
  background:#fff;color:var(--muted);display:inline-flex;align-items:center;justify-content:center;
}
.drawer-cta{margin:24px 20px;display:flex;}

/* ---------- 分类页横幅 ---------- */
.page-hero{
  position:relative;
  padding:112px 0 44px;
  min-height:288px;
  display:flex;
  align-items:flex-end;
  background-image:linear-gradient(90deg,rgba(29,74,99,.82) 0%,rgba(29,74,99,.55) 46%,rgba(29,74,99,.22) 100%),url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  color:#fff;
}
.page-hero h1{
  color:#fff;
  font-size:clamp(30px,4.2vw,48px);
  line-height:1.2;
  max-width:860px;
}
.page-hero .hero-sub{
  margin-top:16px;
  color:rgba(255,255,255,.88);
  font-size:17px;
  max-width:720px;
}
.breadcrumb-line{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:13px;
  color:rgba(255,255,255,.75);
  margin-bottom:22px;
}
.breadcrumb-line a{color:rgba(255,255,255,.85);}
.breadcrumb-line a:hover{color:#fff;}
.breadcrumb-line .sep{opacity:.5;}
.breadcrumb-line .current{color:#fff;}

/* ---------- 板块骨架 ---------- */
.section{padding:var(--sec-space) 0;}
.section-tight{padding:72px 0;}
.section-alt{background:#fff;}
.sec-head{max-width:760px;margin-bottom:52px;}
.sec-head h2{
  font-size:clamp(24px,3vw,34px);
  line-height:1.3;
  position:relative;
  padding-left:18px;
}
.sec-head h2::before{
  content:"";
  position:absolute;
  left:0;top:6px;bottom:6px;
  width:3px;
  background:var(--primary);
  border-radius:2px;
}
.sec-head p{margin-top:16px;color:var(--muted);font-size:16px;}

/* ---------- 图文交替 ---------- */
.split-row{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:56px;
  align-items:center;
}
.split-row + .split-row{margin-top:88px;}
.split-row.reverse .split-media{order:-1;}
.split-media img{
  width:100%;
  aspect-ratio:3/2;
  object-fit:cover;
  border-radius:var(--radius-img);
  box-shadow:var(--shadow-card);
  transition:transform .35s ease,box-shadow .35s ease;
}
.split-media img:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.split-copy h2{
  font-size:clamp(22px,2.4vw,28px);
  line-height:1.35;
  margin-bottom:18px;
}
.split-copy p{color:var(--muted);font-size:15.5px;}
.split-copy .split-list{margin:22px 0 24px;display:grid;gap:12px;}
.split-copy .split-list li{
  position:relative;
  padding-left:22px;
  font-size:15px;
  color:var(--text);
}
.split-copy .split-list li::before{
  content:"";
  position:absolute;
  left:0;top:11px;
  width:10px;height:10px;
  border-radius:3px;
  background:var(--primary-light);
  border:1px solid var(--primary);
}
.split-index{
  font-size:13px;
  color:var(--muted);
  letter-spacing:1.5px;
  margin-bottom:12px;
  font-variant-numeric:tabular-nums;
}

/* ---------- 时效数据条 ---------- */
.stat-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
}
.stat-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:30px 26px;
  box-shadow:var(--shadow-flat);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.stat-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#d5e0e8;}
.stat-num{
  font-size:34px;
  font-weight:600;
  color:var(--primary);
  font-variant-numeric:tabular-nums;
  line-height:1.15;
}
.stat-num small{font-size:15px;font-weight:500;color:var(--muted);margin-left:4px;}
.stat-label{
  margin-top:10px;
  font-size:15px;
  font-weight:600;
  color:var(--text);
}
.stat-desc{
  margin-top:8px;
  font-size:13.5px;
  color:var(--muted);
  line-height:1.7;
}

/* ---------- 服务分段条 ---------- */
.legs{
  background:#fff;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.leg-list li{
  display:grid;
  grid-template-columns:64px 1fr auto;
  gap:24px;
  align-items:center;
  padding:26px 18px;
  border-bottom:1px solid var(--line);
  transition:background-color .25s ease;
}
.leg-list li:last-child{border-bottom:0;}
.leg-list li:hover{background:var(--primary-light);}
.leg-num{
  font-size:13px;
  color:var(--muted);
  font-variant-numeric:tabular-nums;
  letter-spacing:1px;
}
.leg-body h3{font-size:17px;margin-bottom:6px;}
.leg-body p{color:var(--muted);font-size:14.5px;margin:0;max-width:720px;}
.leg-go{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:var(--primary);
  white-space:nowrap;
}
.leg-go i{font-size:12px;transition:transform .25s ease;}
.leg-list li:hover .leg-go i{transform:translateX(4px);}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:first-child{border-top:1px solid var(--line);}
.faq-item summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:22px 4px;
  cursor:pointer;
  list-style:none;
  font-size:16px;
  font-weight:600;
  color:var(--text);
  transition:color .25s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";
  font-size:20px;
  line-height:1;
  color:var(--primary);
  transition:transform .25s ease;
}
.faq-item summary:hover{color:var(--primary);}
.faq-item[open] summary{color:var(--primary);}
.faq-item[open] summary::after{transform:rotate(45deg);}
.faq-answer{
  padding:0 40px 26px 4px;
  font-size:15px;
  line-height:1.85;
  color:var(--muted);
  max-width:820px;
}

/* ---------- CTA + 表单 ---------- */
.cta-band{
  background:linear-gradient(120deg,var(--primary-dark) 0%,#26597a 62%,#2f6d92 100%);
  color:#fff;
  border-radius:18px;
  padding:56px 52px;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:56px;
  align-items:start;
}
.cta-band h2{color:#fff;font-size:clamp(22px,2.6vw,30px);line-height:1.35;}
.cta-band p{color:rgba(255,255,255,.82);font-size:15px;margin-top:16px;}
.cta-points{margin-top:26px;display:grid;gap:12px;}
.cta-points li{
  display:flex;
  align-items:flex-start;
  gap:10px;
  font-size:14.5px;
  color:rgba(255,255,255,.9);
}
.cta-points i{color:#8fd3bd;margin-top:5px;font-size:13px;}
.form-card{
  background:#fff;
  border-radius:var(--radius-card);
  padding:30px;
  box-shadow:0 24px 48px -28px rgba(0,0,0,.45);
}
.form-row{margin-bottom:16px;}
.form-row label{
  display:block;
  font-size:13px;
  color:var(--muted);
  margin-bottom:7px;
}
.form-row input,
.form-row select,
.form-row textarea{
  width:100%;
  min-height:44px;
  padding:10px 14px;
  border:1px solid var(--line);
  border-radius:var(--radius-btn);
  background:#fff;
  color:var(--text);
  font-size:14.5px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.form-row textarea{min-height:94px;resize:vertical;}
.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus{
  outline:none;
  border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(44,110,147,.16);
}
.form-hint{font-size:12.5px;color:var(--muted);margin-top:12px;}
.form-submit{
  width:100%;
  margin-top:6px;
  min-height:46px;
  border:0;
  border-radius:var(--radius-btn);
  background:var(--accent);
  color:#fff;
  font-size:15px;
  font-weight:500;
  letter-spacing:.4px;
  cursor:pointer;
  transition:background-color .25s ease,transform .25s ease,box-shadow .25s ease;
}
.form-submit:hover{background:#b8693c;transform:translateY(-2px);box-shadow:0 14px 26px -14px rgba(200,122,75,.7);}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--primary-dark);
  color:#fff;
  padding:72px 0 30px;
  margin-top:0;
}
.foot-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:40px;
}
.site-footer .brand-mark{color:#fff;font-size:17px;}
.site-footer .brand-sub{color:rgba(255,255,255,.6);}
.foot-brand p{
  margin-top:18px;
  color:rgba(255,255,255,.72);
  font-size:14px;
  line-height:1.85;
  max-width:340px;
}
.foot-col h4{
  color:#fff;
  font-size:15px;
  margin-bottom:18px;
  letter-spacing:.6px;
}
.foot-col ul li{line-height:30px;}
.foot-col ul li a{
  color:rgba(255,255,255,.72);
  font-size:14px;
  border-bottom:1px solid transparent;
  transition:color .25s ease,border-color .25s ease;
}
.foot-col ul li a:hover{color:#fff;border-bottom-color:rgba(255,255,255,.7);}
.foot-contact li{
  display:flex;
  align-items:flex-start;
  gap:10px;
  color:rgba(255,255,255,.72);
  font-size:14px;
  line-height:1.7;
  margin-bottom:10px;
}
.foot-contact i{margin-top:5px;font-size:13px;color:rgba(255,255,255,.6);}
.foot-bottom{
  margin-top:52px;
  padding-top:22px;
  border-top:1px solid rgba(255,255,255,.14);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  font-size:13px;
  color:rgba(255,255,255,.6);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  :root{--sec-space:80px;}
  .split-row{gap:40px;}
  .stat-grid{grid-template-columns:repeat(2,1fr);}
  .cta-band{gap:40px;padding:48px 40px;}
}
@media (max-width:991px){
  .m-nav-list,.nav-cta{display:none;}
  .nav-toggle{display:inline-flex;}
  .split-row,
  .split-row.reverse{grid-template-columns:1fr;}
  .split-row.reverse .split-media{order:0;}
  .split-row + .split-row{margin-top:64px;}
  .cta-band{grid-template-columns:1fr;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:36px;}
}
@media (max-width:767px){
  :root{--sec-space:60px;}
  .container{padding-left:16px;padding-right:16px;}
  .page-hero{padding:96px 0 34px;min-height:auto;}
  .page-hero .hero-sub{font-size:15.5px;}
  .sec-head{margin-bottom:36px;}
  .stat-grid{grid-template-columns:1fr;}
  .leg-list li{grid-template-columns:1fr;gap:8px;padding:22px 4px;}
  .leg-go{justify-content:flex-start;}
  .cta-band{padding:34px 24px;border-radius:14px;}
  .form-card{padding:22px;}
  .foot-grid{grid-template-columns:1fr;}
  .foot-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .faq-answer{padding-right:12px;}
}

/* roulang page: category2 */
:root{
  --blue:#2C6E93;
  --blue-deep:#1D4A63;
  --blue-soft:#EAF1F5;
  --clay:#C87A4B;
  --jade:#3E8F7A;
  --bg:#F6F8FA;
  --card:#FFFFFF;
  --line:#E3E9EE;
  --ink:#26333C;
  --muted:#5C7A8A;
  --r-card:14px;
  --r-img:12px;
  --r-btn:8px;
  --sh-1:0 1px 2px rgba(29,74,99,.06);
  --sh-2:0 12px 28px -14px rgba(29,74,99,.18);
  --sh-3:0 18px 36px -16px rgba(29,74,99,.24);
  --ease:.25s ease;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--blue);text-decoration:none;transition:color var(--ease),opacity var(--ease);}
a:hover{color:var(--blue-deep);}
ul{list-style:none;margin:0;padding:0;}
h1,h2,h3,h4{margin:0;font-weight:600;color:var(--ink);}
p{margin:0;}
button{font-family:inherit;}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid var(--blue);
  outline-offset:2px;
}

.container{
  max-width:1200px;
  width:100%;
  padding-left:20px;
  padding-right:20px;
  margin:0 auto;
}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1000;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--ease);
}
.site-header.scrolled{box-shadow:0 6px 20px -14px rgba(29,74,99,.35);}
.header-inner{
  height:72px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.brand{display:flex;align-items:baseline;gap:8px;color:var(--ink);}
.brand:hover{color:var(--blue-deep);}
.brand-mark{
  font-size:19px;
  font-weight:600;
  letter-spacing:.5px;
  color:var(--blue-deep);
}
.brand-sub{
  font-size:12px;
  color:var(--muted);
  letter-spacing:.4px;
}
.m-nav-list{display:flex;align-items:center;gap:32px;}
.m-nav-list a{
  position:relative;
  font-size:15px;
  color:var(--ink);
  padding:6px 0;
}
.m-nav-list a::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:2px;
  background:var(--blue);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform var(--ease);
}
.m-nav-list a:hover{color:var(--blue);}
.m-nav-list a:hover::after{transform:scaleX(1);}
.m-nav-list a.active{color:var(--blue);}
.m-nav-list a.active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:14px;}
.nav-cta{
  display:inline-flex;
  align-items:center;
  height:38px;
  padding:0 18px;
  border:1px solid var(--blue);
  border-radius:999px;
  color:var(--blue);
  font-size:14px;
  transition:background var(--ease),color var(--ease);
}
.nav-cta:hover{background:var(--blue);color:#fff;}
.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  background:#fff;
  color:var(--ink);
  font-size:16px;
  cursor:pointer;
}
.mobile-drawer{
  display:none;
  border-top:1px solid var(--line);
  background:#fff;
  padding:8px 20px 20px;
}
.mobile-drawer.open{display:block;}
.mobile-drawer a{
  display:block;
  line-height:52px;
  border-bottom:1px solid var(--line);
  font-size:15px;
  color:var(--ink);
}
.mobile-drawer a.active{color:var(--blue);}
.mobile-drawer .drawer-cta{
  margin-top:16px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:100%;
  height:44px;
  border-radius:var(--r-btn);
  background:var(--blue);
  color:#fff;
  font-size:15px;
}

/* ---------- banner ---------- */
.page-banner{
  position:relative;
  min-height:280px;
  display:flex;
  align-items:center;
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;
  background-position:center;
}
.page-banner::before{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(90deg,rgba(29,74,99,.86) 0%,rgba(29,74,99,.68) 48%,rgba(29,74,99,.42) 100%);
}
.banner-inner{position:relative;z-index:2;padding:56px 0;}
.crumbs{
  font-size:13px;
  color:rgba(255,255,255,.75);
  margin-bottom:18px;
}
.crumbs a{color:rgba(255,255,255,.78);}
.crumbs a:hover{color:#fff;}
.crumbs span.sep{margin:0 8px;}
.crumbs span.now{color:rgba(255,255,255,.6);}
.banner-inner h1{
  color:#fff;
  font-size:clamp(28px,4vw,44px);
  line-height:1.22;
  max-width:760px;
}
.banner-sub{
  margin-top:14px;
  color:rgba(255,255,255,.82);
  font-size:15px;
  max-width:640px;
}

/* ---------- 通用板块 ---------- */
.sec{padding:96px 0;}
.sec-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.eyebrow{
  display:flex;
  align-items:center;
  gap:12px;
  font-size:12.5px;
  letter-spacing:1px;
  color:var(--muted);
  font-variant-numeric:tabular-nums;
  margin-bottom:18px;
}
.eyebrow::before{
  content:"";
  width:26px;
  height:1px;
  background:var(--line);
}
.sec-head{max-width:720px;margin-bottom:44px;}
.sec-head h2{
  font-size:clamp(24px,3vw,34px);
  line-height:1.3;
  position:relative;
  padding-left:16px;
}
.sec-head h2::before{
  content:"";
  position:absolute;
  left:0;
  top:.28em;
  width:3px;
  height:.82em;
  background:var(--blue);
  border-radius:2px;
}
.sec-head p{margin-top:14px;color:var(--muted);font-size:15px;}
.sec-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  color:var(--blue);
}
.text-link i{transition:transform var(--ease);font-size:12px;}
.text-link:hover i{transform:translateX(4px);}
.text-link:hover{text-decoration:underline;}

/* ---------- 概览 ---------- */
.overview-grid{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:56px;
  align-items:center;
}
.overview-copy h2{
  font-size:clamp(24px,3vw,32px);
  line-height:1.32;
  position:relative;
  padding-left:16px;
}
.overview-copy h2::before{
  content:"";
  position:absolute;left:0;top:.28em;width:3px;height:.82em;background:var(--blue);border-radius:2px;
}
.overview-copy p{margin-top:16px;color:var(--muted);font-size:15.5px;max-width:720px;}
.check-list{margin-top:28px;display:grid;gap:16px;}
.check-list li{
  display:flex;
  gap:12px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:16px 18px;
  box-shadow:var(--sh-1);
  transition:box-shadow var(--ease),transform var(--ease);
}
.check-list li:hover{box-shadow:var(--sh-2);transform:translateY(-3px);}
.check-list i{color:var(--jade);margin-top:5px;font-size:14px;}
.check-list strong{display:block;font-size:15.5px;font-weight:600;}
.check-list span{font-size:14px;color:var(--muted);}
.media-frame{
  border-radius:var(--r-img);
  overflow:hidden;
  box-shadow:var(--sh-2);
  background:#fff;
}
.media-frame img{width:100%;aspect-ratio:3/2;object-fit:cover;border-radius:var(--r-img);}

/* ---------- 条目流 ---------- */
.flow-list{border-top:1px solid var(--line);}
.flow-item{
  display:grid;
  grid-template-columns:64px minmax(0,1fr) 130px;
  gap:24px;
  align-items:center;
  padding:26px 20px;
  border-bottom:1px solid var(--line);
  transition:background var(--ease),padding-left var(--ease);
}
.flow-item:hover{background:var(--blue-soft);padding-left:28px;}
.flow-num{
  font-size:14px;
  color:var(--blue);
  font-weight:600;
  font-variant-numeric:tabular-nums;
  letter-spacing:.5px;
}
.flow-main h3{font-size:19px;line-height:1.4;margin-bottom:8px;}
.flow-main p{font-size:14.5px;color:var(--muted);max-width:720px;}
.flow-link{
  justify-self:end;
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:var(--blue);
  white-space:nowrap;
}
.flow-link i{font-size:12px;transition:transform var(--ease);}
.flow-item:hover .flow-link i{transform:translateX(4px);}

/* ---------- 数据 ---------- */
.stat-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.stat-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:30px 26px;
  box-shadow:var(--sh-1);
  transition:box-shadow var(--ease),transform var(--ease);
}
.stat-card:hover{box-shadow:var(--sh-2);transform:translateY(-3px);}
.stat-num{
  font-size:clamp(30px,3.4vw,40px);
  font-weight:600;
  color:var(--blue-deep);
  font-variant-numeric:tabular-nums;
  line-height:1.1;
}
.stat-num em{font-style:normal;font-size:16px;color:var(--clay);margin-left:6px;font-weight:600;}
.stat-card h3{margin-top:14px;font-size:16px;}
.stat-card p{margin-top:8px;font-size:14px;color:var(--muted);}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px;}
.tag{
  display:inline-flex;
  align-items:center;
  height:30px;
  padding:0 14px;
  border-radius:999px;
  background:var(--blue-soft);
  color:var(--blue);
  font-size:13px;
}

/* ---------- 场景 ---------- */
.scene-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:24px;
}
.scene-card{
  display:flex;
  gap:20px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:26px;
  box-shadow:var(--sh-1);
  transition:box-shadow var(--ease),transform var(--ease);
}
.scene-card:hover{box-shadow:var(--sh-2);transform:translateY(-3px);}
.scene-icon{
  flex:0 0 44px;
  width:44px;
  height:44px;
  border-radius:999px;
  border:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:center;
  color:var(--blue);
  font-size:16px;
  background:var(--blue-soft);
}
.scene-card h3{font-size:17px;margin-bottom:8px;}
.scene-card p{font-size:14px;color:var(--muted);}
.deliver-box{
  margin-top:32px;
  background:#fff;
  border:1px solid var(--line);
  border-left:3px solid var(--blue);
  border-radius:var(--r-card);
  padding:28px 30px;
}
.deliver-box h3{font-size:17px;margin-bottom:16px;}
.deliver-box ul{display:grid;grid-template-columns:repeat(2,1fr);gap:12px 32px;}
.deliver-box li{
  font-size:14.5px;
  color:var(--muted);
  display:flex;
  gap:10px;
  align-items:flex-start;
}
.deliver-box li i{color:var(--blue);font-size:14px;margin-top:5px;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:880px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:first-child{border-top:1px solid var(--line);}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  padding:22px 0;
  font-size:16px;
  font-weight:600;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  transition:color var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";
  font-size:20px;
  font-weight:400;
  color:var(--blue);
  line-height:1;
  transition:transform var(--ease);
}
.faq-item[open] summary{color:var(--blue);}
.faq-item[open] summary::after{transform:rotate(45deg);}
.faq-item p{
  padding:0 0 24px;
  font-size:15px;
  line-height:1.8;
  color:var(--muted);
  max-width:720px;
}

/* ---------- CTA ---------- */
.cta-band{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-2);
  padding:44px;
  display:grid;
  grid-template-columns:.9fr 1.1fr;
  gap:48px;
}
.cta-copy h2{font-size:clamp(23px,2.6vw,30px);line-height:1.34;}
.cta-copy p{margin-top:14px;color:var(--muted);font-size:15px;}
.cta-points{margin-top:24px;display:grid;gap:12px;}
.cta-points li{display:flex;gap:10px;font-size:14.5px;color:var(--muted);}
.cta-points i{color:var(--jade);margin-top:5px;font-size:13px;}
.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;}
.field{display:flex;flex-direction:column;gap:8px;}
.field.full{grid-column:1 / -1;}
.field label{font-size:13px;color:var(--muted);}
.field input,.field select,.field textarea{
  height:44px;
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  background:#fff;
  padding:0 14px;
  font-size:14.5px;
  color:var(--ink);
  font-family:inherit;
  transition:border-color var(--ease),box-shadow var(--ease);
}
.field textarea{height:104px;padding:12px 14px;resize:vertical;line-height:1.7;}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--blue);
  box-shadow:0 0 0 3px rgba(44,110,147,.16);
  outline:none;
}
.field input::placeholder,.field textarea::placeholder{color:#9FB2BC;}
.form-foot{grid-column:1 / -1;display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;}
.btn-primary-solid{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-width:160px;
  height:46px;
  padding:0 26px;
  border:0;
  border-radius:var(--r-btn);
  background:var(--clay);
  color:#fff;
  font-size:15px;
  cursor:pointer;
  transition:background var(--ease),transform var(--ease);
}
.btn-primary-solid:hover{background:#B56B3F;transform:translateY(-2px);}
.form-tip{font-size:13px;color:var(--muted);}

/* ---------- footer ---------- */
.site-footer{
  background:var(--blue-deep);
  color:#fff;
  padding:64px 0 24px;
  margin-top:0;
}
.foot-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:40px;
}
.foot-brand .brand{align-items:baseline;}
.foot-brand .brand-mark{color:#fff;font-size:18px;}
.foot-brand .brand-sub{color:rgba(255,255,255,.6);}
.foot-brand p{
  margin-top:16px;
  font-size:14px;
  line-height:1.8;
  color:rgba(255,255,255,.72);
  max-width:340px;
}
.foot-col h4{
  color:#fff;
  font-size:15px;
  font-weight:600;
  margin-bottom:16px;
}
.foot-col ul li{line-height:30px;}
.foot-col ul li a{
  color:rgba(255,255,255,.72);
  font-size:14px;
  border-bottom:1px solid transparent;
  transition:color var(--ease),border-color var(--ease);
}
.foot-col ul li a:hover{color:#fff;border-bottom-color:rgba(255,255,255,.6);}
.foot-contact li{
  display:flex;
  gap:10px;
  align-items:center;
  color:rgba(255,255,255,.72);
  font-size:14px;
}
.foot-contact i{color:rgba(255,255,255,.5);font-size:13px;width:16px;}
.foot-bottom{
  border-top:1px solid rgba(255,255,255,.14);
  padding-top:22px;
  display:flex;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:rgba(255,255,255,.6);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .sec{padding:84px 0;}
  .flow-item{grid-template-columns:56px minmax(0,1fr) 110px;gap:18px;}
}
@media (max-width:991px){
  .m-nav-list,.header-actions .nav-cta{display:none;}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;}
  .overview-grid{grid-template-columns:1fr;gap:36px;}
  .stat-grid{grid-template-columns:1fr 1fr;}
  .cta-band{grid-template-columns:1fr;gap:32px;padding:32px;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  .sec{padding:56px 0;}
  .container{padding-left:16px;padding-right:16px;}
  .page-banner{min-height:220px;}
  .banner-inner{padding:40px 0;}
  .flow-item{grid-template-columns:1fr;gap:10px;padding:22px 16px;}
  .flow-link{justify-self:start;}
  .flow-item:hover{padding-left:20px;}
  .stat-grid{grid-template-columns:1fr;}
  .scene-grid{grid-template-columns:1fr;}
  .deliver-box ul{grid-template-columns:1fr;}
  .form-grid{grid-template-columns:1fr;}
  .foot-grid{grid-template-columns:1fr;gap:28px;}
  .sec-head-row{flex-direction:column;align-items:flex-start;gap:12px;}
  .cta-band{padding:24px 20px;}
}
@media (max-width:520px){
  .brand-sub{display:none;}
  .brand-mark{font-size:17px;}
  .banner-inner h1{font-size:26px;}
  .btn-primary-solid{width:100%;}
}

/* roulang page: category3 */
:root{
  --c-primary:#2C6E93;
  --c-deep:#1D4A63;
  --c-light:#EAF1F5;
  --c-accent:#C87A4B;
  --c-green:#3E8F7A;
  --bg:#F6F8FA;
  --card:#FFFFFF;
  --line:#E3E9EE;
  --text:#26333C;
  --muted:#5C7A8A;
  --r-card:14px;
  --r-img:12px;
  --r-btn:8px;
  --sh-rest:0 1px 2px rgba(29,74,99,.06);
  --sh-card:0 12px 28px -14px rgba(29,74,99,.18);
  --sh-hover:0 18px 36px -16px rgba(29,74,99,.24);
  --ease:.25s ease;
}

*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:#FFFFFF;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color var(--ease),opacity var(--ease);}
a:hover{color:var(--c-primary);}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;font-weight:600;letter-spacing:.2px;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
::selection{background:rgba(44,110,147,.16);}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:20px;
  padding-right:20px;
}

/* ---------- 按钮 ---------- */
.btn-brand{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 26px;border:none;border-radius:var(--r-btn);
  background:var(--c-primary);color:#fff;font-size:15px;font-weight:600;
  box-shadow:var(--sh-rest);transition:all var(--ease);cursor:pointer;
}
.btn-brand:hover{background:var(--c-deep);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-hover);}
.btn-brand:active{transform:translateY(0);background:#17405a;}
.btn-brand:focus-visible{outline:3px solid rgba(44,110,147,.28);outline-offset:2px;}

.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 24px;border-radius:var(--r-btn);
  border:1px solid rgba(255,255,255,.72);background:transparent;color:#fff;
  font-size:15px;font-weight:600;transition:all var(--ease);
}
.btn-ghost:hover{background:rgba(255,255,255,.14);color:#fff;border-color:#fff;}

.btn-line{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-btn);
  border:1px solid var(--c-primary);background:transparent;color:var(--c-primary);
  font-size:15px;font-weight:600;transition:all var(--ease);
}
.btn-line:hover{background:var(--c-light);color:var(--c-deep);border-color:var(--c-deep);}
.btn-line:focus-visible{outline:3px solid rgba(44,110,147,.2);outline-offset:2px;}

.text-link{
  display:inline-flex;align-items:center;gap:6px;color:var(--c-primary);
  font-size:15px;font-weight:600;
}
.text-link i{transition:transform var(--ease);font-size:12px;}
.text-link:hover{color:var(--c-deep);}
.text-link:hover i{transform:translateX(4px);}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--ease);
}
.site-header.is-scrolled{box-shadow:0 6px 18px -14px rgba(29,74,99,.45);}
.head-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;}

.brand{display:flex;align-items:baseline;gap:10px;flex-shrink:0;}
.brand-mark{font-size:19px;font-weight:600;color:var(--c-deep);letter-spacing:.5px;}
.brand-sub{
  font-size:11px;color:var(--muted);letter-spacing:1.4px;
  padding-left:10px;border-left:1px solid var(--line);
}

.m-nav-list{display:flex;align-items:center;gap:32px;}
.m-nav-list a{
  position:relative;padding:6px 0;font-size:15px;color:var(--text);white-space:nowrap;
}
.m-nav-list a::after{
  content:'';position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--c-primary);transform:scaleX(0);transform-origin:left;
  transition:transform var(--ease);
}
.m-nav-list a:hover{color:var(--c-primary);}
.m-nav-list a:hover::after{transform:scaleX(1);}
.m-nav-list a.active{color:var(--c-primary);font-weight:600;}
.m-nav-list a.active::after{transform:scaleX(1);}

.btn-head{
  display:inline-flex;align-items:center;justify-content:center;
  height:38px;padding:0 20px;border-radius:999px;
  border:1px solid var(--c-primary);color:var(--c-primary);
  font-size:14px;font-weight:600;transition:all var(--ease);white-space:nowrap;
}
.btn-head:hover{background:var(--c-primary);color:#fff;}

.nav-toggle{
  width:44px;height:44px;border-radius:var(--r-btn);
  border:1px solid var(--line);background:#fff;color:var(--c-deep);
  display:inline-flex;align-items:center;justify-content:center;font-size:17px;
  cursor:pointer;transition:all var(--ease);
}
.nav-toggle:hover{border-color:var(--c-primary);color:var(--c-primary);}

.nav-drawer{width:min(84vw,340px);border-left:1px solid var(--line);}
.nav-drawer .offcanvas-header{
  padding:18px 20px;border-bottom:1px solid var(--line);align-items:center;
}
.nav-drawer .offcanvas-body{padding:8px 20px 28px;}
.drawer-close{
  width:40px;height:40px;border:1px solid var(--line);border-radius:var(--r-btn);
  background:#fff;color:var(--c-deep);display:inline-flex;align-items:center;justify-content:center;
  cursor:pointer;transition:all var(--ease);
}
.drawer-close:hover{border-color:var(--c-primary);color:var(--c-primary);}
.drawer-nav{flex-direction:column;align-items:stretch;gap:0;}
.drawer-nav a{
  height:52px;display:flex;align-items:center;width:100%;
  border-bottom:1px solid var(--line);font-size:15px;
}
.drawer-nav a::after{display:none;}
.drawer-nav a.active{color:var(--c-primary);font-weight:600;}
.drawer-cta{width:100%;margin-top:22px;}

/* ---------- 内页横幅 ---------- */
.page-banner{
  position:relative;
  min-height:280px;
  display:flex;align-items:center;
  padding:64px 0;
  background-image:linear-gradient(90deg,rgba(29,74,99,.82) 0%,rgba(29,74,99,.62) 52%,rgba(29,74,99,.42) 100%),
                   url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  color:#fff;
}
.banner-label{
  display:inline-flex;align-items:center;height:28px;padding:0 14px;border-radius:999px;
  background:rgba(255,255,255,.16);color:#EAF1F5;font-size:12px;letter-spacing:1px;
  margin-bottom:18px;
}
.page-banner h1{
  font-size:clamp(30px,4.2vw,48px);
  line-height:1.2;
  font-weight:600;
  max-width:820px;
}
.page-banner .banner-sub{
  margin-top:16px;max-width:640px;font-size:16px;line-height:1.75;
  color:rgba(255,255,255,.86);
}
.banner-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}

.breadcrumb-bar{
  padding:16px 0;font-size:13px;color:var(--muted);
  border-bottom:1px solid var(--line);background:#fff;
}
.breadcrumb-bar a{color:var(--muted);}
.breadcrumb-bar a:hover{color:var(--c-primary);}
.breadcrumb-bar .sep{margin:0 8px;color:#C3D0D8;}
.breadcrumb-bar .current{color:var(--muted);}

/* ---------- 板块基础 ---------- */
.section{padding:88px 0;}
.section-tint{background:var(--bg);}
.section-soft{background:var(--c-light);}

.sec-index{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12px;letter-spacing:2px;color:var(--muted);margin-bottom:14px;
}
.sec-index::before{content:'';width:22px;height:1px;background:#C3D0D8;}
.section-head{margin-bottom:44px;max-width:760px;}
.section-head h2{font-size:clamp(24px,3vw,34px);line-height:1.3;}
.section-head p{margin-top:14px;color:var(--muted);font-size:15px;max-width:720px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.section-head.center p{margin-left:auto;margin-right:auto;}

/* ---------- 图文能力区 ---------- */
.media-row{display:grid;grid-template-columns:1.05fr 1fr;gap:56px;align-items:center;}
.media-figure{margin:0;}
.media-figure img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--r-img);box-shadow:var(--sh-card);
}
.cap-list{margin-top:26px;display:grid;gap:16px;}
.cap-list li{display:flex;gap:14px;align-items:flex-start;}
.cap-list .cap-ico{
  flex:0 0 34px;width:34px;height:34px;border-radius:10px;
  background:var(--c-light);color:var(--c-primary);
  display:inline-flex;align-items:center;justify-content:center;font-size:14px;
}
.cap-list strong{display:block;font-size:15px;font-weight:600;}
.cap-list span{font-size:14px;color:var(--muted);line-height:1.7;}

/* ---------- 服务条目流 ---------- */
.flow-list{border-top:1px solid var(--line);}
.flow-row{
  display:grid;grid-template-columns:64px 1.1fr 1.6fr 44px;
  gap:22px;align-items:center;
  padding:26px 18px;border-bottom:1px solid var(--line);
  transition:background var(--ease);
}
.flow-row:hover{background:var(--c-light);}
.flow-num{
  font-size:14px;color:var(--c-primary);font-weight:600;
  font-variant-numeric:tabular-nums;letter-spacing:1px;
}
.flow-row h3{font-size:18px;}
.flow-row p{font-size:14px;color:var(--muted);line-height:1.75;margin:0;}
.flow-arrow{
  width:40px;height:40px;border-radius:50%;border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--c-primary);font-size:13px;transition:all var(--ease);
}
.flow-row:hover .flow-arrow{border-color:var(--c-primary);background:#fff;transform:translateX(3px);}

/* ---------- 时间轴 ---------- */
.timeline{position:relative;max-width:860px;margin:0 auto;}
.timeline::before{
  content:'';position:absolute;left:8px;top:12px;bottom:18px;width:2px;
  background:linear-gradient(180deg,var(--c-primary) 0%,rgba(44,110,147,.16) 100%);
}
.tl-item{position:relative;padding:0 0 40px 46px;}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:'';position:absolute;left:0;top:5px;width:18px;height:18px;border-radius:50%;
  background:#fff;border:2px solid var(--c-primary);
  box-shadow:0 0 0 5px rgba(44,110,147,.10);
}
.tl-item.is-done::before{border-color:var(--c-green);box-shadow:0 0 0 5px rgba(62,143,122,.14);}
.tl-meta{display:flex;align-items:center;flex-wrap:wrap;gap:12px;margin-bottom:10px;}
.tl-tag{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  background:var(--c-light);color:var(--c-primary);font-size:12px;font-weight:600;
  font-variant-numeric:tabular-nums;letter-spacing:.5px;
}
.tl-time{font-size:13px;color:var(--muted);}
.tl-item h3{font-size:19px;margin-bottom:8px;}
.tl-item p{font-size:14px;color:var(--muted);line-height:1.8;max-width:660px;}

/* ---------- 数据条 ---------- */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.stat-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px 26px;box-shadow:var(--sh-rest);transition:all var(--ease);
}
.stat-card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);}
.stat-num{
  font-size:clamp(30px,3.4vw,40px);font-weight:600;color:var(--c-primary);
  line-height:1.1;font-variant-numeric:tabular-nums;
}
.stat-num .unit{font-size:15px;color:var(--muted);font-weight:400;margin-left:6px;}
.stat-card p{margin-top:12px;font-size:14px;color:var(--muted);line-height:1.7;}

/* ---------- 场景卡片 ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.scene-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-rest);transition:all var(--ease);
  display:flex;flex-direction:column;
}
.scene-card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);}
.scene-card img{width:100%;aspect-ratio:3/2;object-fit:cover;}
.scene-body{padding:24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.scene-body h3{font-size:18px;}
.scene-body p{font-size:14px;color:var(--muted);line-height:1.75;flex:1;}
.badge-soft{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  background:var(--c-light);color:var(--c-primary);font-size:12px;font-weight:600;
  align-self:flex-start;
}

/* ---------- FAQ ---------- */
.faq-acc .accordion-item{
  background:transparent;border:none;border-bottom:1px solid var(--line);border-radius:0;
}
.faq-acc .accordion-item:first-child{border-top:1px solid var(--line);}
.faq-acc .accordion-button{
  background:transparent;box-shadow:none;border-radius:0;
  padding:22px 0;font-size:16px;font-weight:600;color:var(--text);
  display:flex;justify-content:space-between;align-items:center;gap:24px;
}
.faq-acc .accordion-button:not(.collapsed){color:var(--c-primary);background:transparent;box-shadow:none;}
.faq-acc .accordion-button:focus{box-shadow:none;border-color:transparent;outline:none;}
.faq-acc .accordion-button::after{display:none;}
.faq-acc .faq-icon{
  flex:0 0 auto;font-size:13px;color:var(--c-primary);transition:transform var(--ease);
}
.faq-acc .accordion-button:not(.collapsed) .faq-icon{transform:rotate(45deg);}
.faq-acc .accordion-body{
  padding:0 0 26px;font-size:15px;line-height:1.85;color:var(--muted);max-width:860px;
}

/* ---------- CTA 条 ---------- */
.cta-strip{
  border:1px solid var(--c-primary);border-radius:var(--r-card);
  padding:40px 44px;display:flex;align-items:center;justify-content:space-between;gap:32px;
  background:linear-gradient(90deg,var(--c-light) 0%,#FFFFFF 78%);
}
.cta-strip h2{font-size:clamp(22px,2.4vw,28px);line-height:1.35;}
.cta-strip p{margin-top:12px;font-size:15px;color:var(--muted);max-width:620px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;flex-shrink:0;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-deep);color:rgba(255,255,255,.78);padding:72px 0 0;margin-top:0;}
.foot-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:40px;
  padding-bottom:52px;
}
.site-footer .brand-mark{color:#fff;}
.site-footer .brand-sub{color:rgba(255,255,255,.6);border-left-color:rgba(255,255,255,.2);}
.foot-brand p{margin-top:18px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.72);max-width:340px;}
.foot-col h4{font-size:15px;color:#fff;margin-bottom:18px;font-weight:600;}
.foot-col ul{display:grid;gap:12px;}
.foot-col a,.foot-col span{font-size:14px;line-height:1.6;color:rgba(255,255,255,.72);}
.foot-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px;}
.foot-contact li{display:flex;gap:10px;align-items:flex-start;}
.foot-contact i{color:rgba(255,255,255,.55);margin-top:4px;font-size:13px;}
.foot-bottom{
  border-top:1px solid rgba(255,255,255,.14);
  padding:22px 0;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.62);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .media-row{gap:40px;}
  .foot-grid{grid-template-columns:1.5fr 1fr 1fr;gap:32px;}
  .foot-contact{grid-column:1 / -1;}
}
@media (max-width:991.98px){
  .section{padding:72px 0;}
  .media-row{grid-template-columns:1fr;gap:32px;}
  .media-figure{order:-1;}
  .stat-grid{grid-template-columns:repeat(2,1fr);}
  .scene-grid{grid-template-columns:repeat(2,1fr);}
  .flow-row{grid-template-columns:52px 1fr 40px;grid-template-areas:"num title arrow" ". desc desc";}
  .flow-num{grid-area:num;}
  .flow-row h3{grid-area:title;}
  .flow-row p{grid-area:desc;}
  .flow-arrow{grid-area:arrow;}
}
@media (max-width:767.98px){
  .container{padding-left:16px;padding-right:16px;}
  .section{padding:56px 0;}
  .head-inner{height:64px;}
  .page-banner{min-height:420px;padding:48px 0;}
  .page-banner .banner-sub{font-size:15px;}
  .stat-grid{grid-template-columns:1fr 1fr;gap:16px;}
  .stat-card{padding:22px 20px;}
  .scene-grid{grid-template-columns:1fr;}
  .cta-strip{flex-direction:column;align-items:flex-start;padding:30px 24px;}
  .cta-actions{width:100%;}
  .cta-actions .btn-brand,.cta-actions .btn-line{width:100%;}
  .flow-row{padding:22px 12px;gap:16px;}
  .tl-item{padding-left:38px;}
  .tl-item::before{width:16px;height:16px;}
  .timeline::before{left:7px;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:28px;padding-bottom:36px;}
  .foot-brand{grid-column:1 / -1;}
  .site-footer{padding-top:56px;}
}
@media (max-width:519.98px){
  .stat-grid{grid-template-columns:1fr;}
  .banner-actions{flex-direction:column;align-items:stretch;}
  .banner-actions .btn-brand,.banner-actions .btn-ghost{width:100%;}
  .foot-grid{grid-template-columns:1fr;}
  .foot-bottom{flex-direction:column;gap:8px;}
}

/* roulang page: category4 */
:root{
  --primary:#2C6E93;
  --primary-dark:#1D4A63;
  --primary-light:#EAF1F5;
  --accent:#C87A4B;
  --accent-soft:#FBEFE8;
  --green:#3E8F7A;
  --bg:#F6F8FA;
  --card:#FFFFFF;
  --line:#E3E9EE;
  --text:#26333C;
  --muted:#5C7A8A;
  --r-card:14px;
  --r-img:12px;
  --r-btn:8px;
  --sh-1:0 1px 2px rgba(29,74,99,.06);
  --sh-card:0 12px 28px -14px rgba(29,74,99,.18);
  --sh-hover:0 18px 36px -16px rgba(29,74,99,.24);
  --t:.25s ease;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
}
a{color:var(--primary);text-decoration:none;transition:color var(--t)}
a:hover{color:var(--primary-dark)}
img{max-width:100%;display:block}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;font-weight:600;color:var(--text)}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}

.container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:#fff;border-bottom:1px solid var(--line);
  transition:box-shadow var(--t);
}
.site-header.scrolled{box-shadow:0 8px 22px -18px rgba(29,74,99,.65)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px}
.brand{display:flex;flex-direction:column;line-height:1.05;text-decoration:none}
.brand-mark{font-size:19px;font-weight:600;letter-spacing:.5px;color:var(--primary-dark);white-space:nowrap}
.brand-sub{font-size:11px;letter-spacing:1.8px;color:var(--muted);margin-top:4px}
.m-nav-list{display:flex;align-items:center;gap:32px}
.m-nav-list a{
  position:relative;display:inline-block;
  font-size:15px;color:var(--text);padding:6px 0;transition:color var(--t);
}
.m-nav-list a:hover{color:var(--primary)}
.m-nav-list a.active{color:var(--primary)}
.m-nav-list a.active::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--primary);border-radius:2px;
}
.nav-right{display:flex;align-items:center;gap:14px}
.nav-cta{
  display:inline-flex;align-items:center;justify-content:center;
  height:38px;padding:0 18px;border-radius:var(--r-btn);
  background:var(--primary);color:#fff;font-size:14px;letter-spacing:.3px;
  transition:background var(--t),transform var(--t);
}
.nav-cta:hover{background:var(--primary-dark);color:#fff}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:var(--r-btn);
  background:#fff;color:var(--text);font-size:16px;cursor:pointer;transition:border-color var(--t);
}
.nav-toggle:hover{border-color:var(--primary);color:var(--primary)}

.m-drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(84vw,360px);
  background:#fff;z-index:1100;transform:translateX(102%);
  transition:transform .28s ease;box-shadow:-14px 0 40px -22px rgba(29,74,99,.5);
  padding:20px;overflow-y:auto;
}
.m-drawer.open{transform:translateX(0)}
.m-drawer .drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px}
.m-drawer .brand-mark{font-size:17px}
.drawer-close{
  width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:var(--r-btn);
  color:var(--muted);cursor:pointer;transition:color var(--t),border-color var(--t);
}
.drawer-close:hover{color:var(--primary);border-color:var(--primary)}
.m-drawer nav{display:flex;flex-direction:column;margin-top:8px}
.m-drawer nav a{
  height:52px;display:flex;align-items:center;color:var(--text);
  border-bottom:1px solid var(--line);font-size:15px;
}
.m-drawer nav a.active{color:var(--primary)}
.m-drawer .drawer-cta{
  margin-top:20px;height:46px;display:flex;align-items:center;justify-content:center;
  background:var(--primary);color:#fff;border-radius:var(--r-btn);font-size:15px;
}
.m-drawer .drawer-cta:hover{background:var(--primary-dark);color:#fff}
.drawer-mask{
  position:fixed;inset:0;background:rgba(29,74,99,.38);z-index:1090;
  opacity:0;visibility:hidden;transition:opacity var(--t),visibility var(--t);
}
.drawer-mask.open{opacity:1;visibility:visible}

/* ---------- hero banner ---------- */
.page-hero{
  position:relative;
  min-height:290px;
  display:flex;align-items:center;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  color:#fff;overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(29,74,99,.80) 0%,rgba(29,74,99,.58) 52%,rgba(29,74,99,.34) 100%);
}
.page-hero .container{position:relative;z-index:2;padding-top:52px;padding-bottom:52px}
.crumb{font-size:13px;color:rgba(255,255,255,.74);margin-bottom:16px}
.crumb a{color:rgba(255,255,255,.82)}
.crumb a:hover{color:#fff;text-decoration:underline}
.crumb span.sep{margin:0 8px;color:rgba(255,255,255,.5)}
.crumb .current{color:rgba(255,255,255,.95)}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:5px 14px;border-radius:999px;font-size:12.5px;letter-spacing:.4px;
  background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.28);color:#fff;
}
.hero-tag i{font-size:11px;color:#EBD3C3}
.page-hero h1{
  color:#fff;margin:16px 0 12px;
  font-size:clamp(30px,4.2vw,46px);line-height:1.2;font-weight:600;
}
.hero-sub{color:rgba(255,255,255,.88);font-size:16px;max-width:640px}

/* ---------- sections ---------- */
.section{padding:92px 0}
.section.tight{padding:76px 0}
.section.alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:720px;margin-bottom:44px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;letter-spacing:1.4px;color:var(--primary);margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--primary);border-radius:2px}
.eyebrow.no-line::before{display:none}
.section-head h2{
  position:relative;padding-left:16px;
  font-size:clamp(24px,3vw,34px);line-height:1.3;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:8px;bottom:8px;width:4px;border-radius:2px;
  background:var(--primary-dark);
}
.section-head.center h2{padding-left:0}
.section-head.center h2::before{display:none}
.section-head p{margin-top:14px;color:var(--muted);font-size:15.5px}

/* ---------- buttons ---------- */
.m-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;cursor:pointer;border:1px solid transparent;
  transition:background var(--t),color var(--t),border-color var(--t),transform var(--t),box-shadow var(--t);
}
.m-btn.solid{background:var(--primary);color:#fff}
.m-btn.solid:hover{background:var(--primary-dark);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-card)}
.m-btn.solid:active{background:var(--primary-dark);transform:translateY(0)}
.m-btn.ghost{background:#fff;color:var(--primary-dark);border-color:var(--line)}
.m-btn.ghost:hover{border-color:var(--primary);color:var(--primary);background:#fff}
.m-btn.online{background:transparent;color:var(--primary-dark);border-color:var(--primary)}
.m-btn.online:hover{background:var(--primary-light);color:var(--primary-dark)}
.m-btn:focus-visible,.nav-cta:focus-visible,.nav-toggle:focus-visible,
.m-nav-list a:focus-visible,.faq-q:focus-visible,a:focus-visible{
  outline:3px solid rgba(44,110,147,.32);outline-offset:2px;
}
.link-more{
  display:inline-flex;align-items:center;gap:6px;font-size:14.5px;color:var(--primary);
}
.link-more i{font-size:12px;transition:transform var(--t)}
.link-more:hover{color:var(--primary-dark);text-decoration:underline}
.link-more:hover i{transform:translateX(4px)}

/* ---------- 服务涵盖 ---------- */
.cover-split{display:grid;grid-template-columns:5fr 7fr;gap:40px;align-items:start}
.cover-figure{
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-card);
  border:1px solid var(--line);background:#fff;
}
.cover-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:0}
.cover-figure figcaption{
  padding:12px 16px;font-size:13px;color:var(--muted);border-top:1px solid var(--line);
}
.cover-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.cover-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px 20px;box-shadow:var(--sh-1);transition:box-shadow var(--t),transform var(--t);
}
.cover-card:hover{box-shadow:var(--sh-hover);transform:translateY(-3px)}
.cover-icon{
  width:40px;height:40px;display:flex;align-items:center;justify-content:center;
  color:var(--primary);font-size:18px;margin-bottom:14px;
}
.cover-card h3{font-size:17px;margin-bottom:8px}
.cover-card p{font-size:14px;color:var(--muted);line-height:1.7}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.tag{
  display:inline-flex;align-items:center;padding:5px 13px;border-radius:999px;
  background:var(--primary-light);color:var(--primary-dark);font-size:12.5px;
}

/* ---------- 数据卡 ---------- */
.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.metric-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:30px 24px 26px;box-shadow:var(--sh-1);
  transition:box-shadow var(--t),transform var(--t),border-color var(--t);
}
.metric-card:hover{box-shadow:var(--sh-hover);transform:translateY(-3px);border-color:#D6E2EA}
.metric-num{
  font-variant-numeric:tabular-nums;font-weight:600;line-height:1;
  font-size:clamp(30px,3.4vw,42px);color:var(--primary-dark);display:flex;align-items:baseline;
}
.metric-num .unit{font-size:15px;font-weight:600;color:var(--accent);margin-left:6px;letter-spacing:.5px}
.metric-card h3{font-size:16px;margin:16px 0 8px}
.metric-card p{font-size:13.5px;color:var(--muted);line-height:1.7}
.metric-bar{height:4px;border-radius:999px;background:var(--primary-light);margin-top:18px;overflow:hidden}
.metric-bar span{display:block;height:100%;background:var(--accent);border-radius:999px}

/* ---------- 流程 ---------- */
.steps{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:28px}
.steps::before{
  content:"";position:absolute;top:7px;left:6%;right:6%;height:2px;background:var(--line);
}
.step{position:relative;padding-top:38px}
.step::before{
  content:"";position:absolute;top:0;left:0;width:16px;height:16px;border-radius:50%;
  background:#fff;border:2px solid #C4D3DC;transition:background var(--t),border-color var(--t);
}
.step.done::before{
  background:var(--primary);border-color:var(--primary);
  box-shadow:0 0 0 6px rgba(44,110,147,.12);
}
.step.done:nth-child(4)::before{background:var(--green);border-color:var(--green);box-shadow:0 0 0 6px rgba(62,143,122,.14)}
.step-no{
  font-size:12.5px;letter-spacing:1.2px;color:var(--muted);
  font-variant-numeric:tabular-nums;margin-bottom:6px;
}
.step h3{font-size:17px;margin-bottom:8px}
.step p{font-size:14px;color:var(--muted);line-height:1.7}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:first-child{border-top:1px solid var(--line)}
.faq-q{
  width:100%;background:transparent;border:0;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0;text-align:left;font-size:16px;font-weight:600;color:var(--text);
  transition:color var(--t);
}
.faq-q:hover{color:var(--primary)}
.faq-icon{position:relative;width:16px;height:16px;flex:0 0 16px;transition:transform var(--t)}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--primary);border-radius:2px;
}
.faq-icon::before{top:7px;left:0;width:16px;height:1.6px}
.faq-icon::after{left:7px;top:0;width:1.6px;height:16px}
.faq-item.open .faq-icon{transform:rotate(45deg)}
.faq-item.open .faq-q{color:var(--primary)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a p{
  font-size:15px;line-height:1.8;color:var(--muted);
  padding:0 40px 22px 0;
}
.faq-item.open .faq-a{max-height:360px}

/* ---------- CTA + form ---------- */
.cta-strip{
  border:1px solid #CFDFE8;border-radius:var(--r-card);background:#fff;
  padding:30px 32px;display:flex;align-items:center;justify-content:space-between;gap:26px;
  box-shadow:var(--sh-1);
}
.cta-strip h3{font-size:19px;margin-bottom:6px}
.cta-strip p{font-size:14px;color:var(--muted);margin:0}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

.form-box{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:34px 32px;box-shadow:var(--sh-card);margin-top:28px;
}
.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.field{display:flex;flex-direction:column}
.field.full{grid-column:1/-1}
.field label{font-size:13px;color:var(--muted);margin-bottom:7px}
.field input,.field select,.field textarea{
  height:44px;border:1px solid var(--line);border-radius:var(--r-btn);
  padding:0 13px;font-size:15px;color:var(--text);background:#fff;
  font-family:inherit;transition:border-color var(--t),box-shadow var(--t);
}
.field textarea{height:118px;padding:11px 13px;line-height:1.7;resize:vertical}
.field select{appearance:none;background-image:none}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(44,110,147,.16);
}
.field input::placeholder,.field textarea::placeholder{color:#9BAEB9}
.field .err{font-size:13px;color:var(--accent);margin-top:6px;min-height:18px}
.form-foot{display:flex;align-items:center;justify-content:space-between;gap:18px;margin-top:22px;flex-wrap:wrap}
.form-note{font-size:13px;color:var(--muted)}
.form-msg{font-size:13.5px;color:var(--green);min-height:20px;margin-top:14px}

/* ---------- footer ---------- */
.site-footer{background:var(--primary-dark);color:#fff;padding:64px 0 0;margin-top:12px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}
.site-footer .brand{flex-direction:column}
.site-footer .brand-mark{color:#fff;font-size:18px}
.site-footer .brand-sub{color:rgba(255,255,255,.66);letter-spacing:1.7px}
.foot-brand p{
  margin-top:16px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.72);max-width:340px;
}
.foot-col h4{font-size:15px;color:#fff;margin-bottom:16px;font-weight:600}
.foot-col ul{line-height:30px}
.foot-col ul li a{color:rgba(255,255,255,.72);font-size:14px;transition:color var(--t)}
.foot-col ul li a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.foot-contact li{
  display:flex;align-items:center;gap:10px;font-size:14px;color:rgba(255,255,255,.72);line-height:30px;
}
.foot-contact li i{color:rgba(255,255,255,.55);font-size:13px;width:16px}
.foot-bottom{
  margin-top:48px;border-top:1px solid rgba(255,255,255,.14);
  padding:22px 0 26px;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.6);
}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .m-nav-list{gap:22px}
  .m-nav-list a{font-size:14px}
  .metric-grid{grid-template-columns:repeat(2,1fr)}
  .cover-split{gap:30px}
}
@media (max-width:991.98px){
  .m-nav-list,.nav-cta{display:none}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
  .section{padding:64px 0}
  .section.tight{padding:56px 0}
  .cover-split{grid-template-columns:1fr}
  .steps{grid-template-columns:repeat(2,1fr);row-gap:34px}
  .steps::before{display:none}
  .step{padding-top:26px}
  .foot-grid{grid-template-columns:repeat(2,1fr);gap:32px}
  .cta-strip{flex-direction:column;align-items:flex-start}
}
@media (max-width:768px){
  .container{padding-left:16px;padding-right:16px}
  .page-hero{min-height:240px}
  .page-hero .container{padding-top:38px;padding-bottom:38px}
  .section{padding:56px 0}
  .section.tight{padding:50px 0}
  .section-head{margin-bottom:30px}
  .metric-grid{grid-template-columns:1fr}
  .cover-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr;row-gap:26px}
  .step{padding-top:0;padding-left:28px}
  .step::before{top:6px;left:0}
  .steps{position:relative;padding-left:6px}
  .steps .line-mobile{
    position:absolute;left:7px;top:8px;bottom:8px;width:2px;background:var(--line);
  }
  .form-grid{grid-template-columns:1fr}
  .form-box{padding:24px 18px}
  .foot-grid{grid-template-columns:1fr}
  .foot-bottom{flex-direction:column;gap:6px}
  .m-btn{width:100%}
  .cta-actions{width:100%}
}
@media (max-width:520px){
  .page-hero h1{font-size:26px}
  .hero-sub{font-size:14.5px}
  .brand-sub{letter-spacing:1.2px}
}