/* roulang page: index */
:root{
  --brand:#0F5C7A;
  --brand-hover:#0B4A63;
  --brand-active:#083A4E;
  --brand-soft:#EAF2F6;
  --accent:#C4713A;
  --ink:#0B2A3B;
  --text:#22333D;
  --muted:#5C7079;
  --line:#DFE8EE;
  --line-soft:#E9F0F4;
  --bg-alt:#F3F7F9;
  --paper:#FBFCFD;
  --ok:#1E8A6E;
  --warn:#B4453A;
  --r-card:14px;
  --r-sm:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(11,42,59,.06);
  --sh-2:0 10px 24px -14px rgba(11,42,59,.22);
  --sh-3:0 18px 40px -20px rgba(11,42,59,.30);
  --max:1200px;
  --bs-primary:#0F5C7A;
  --bs-body-color:#22333D;
  --bs-body-bg:#FBFCFD;
  --bs-border-color:#DFE8EE;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,h5,h6{
  color:var(--ink);
  font-weight:700;
  line-height:1.28;
  letter-spacing:0;
  margin:0;
}
p{margin:0 0 1.1em;}
p:last-child{margin-bottom:0;}
a{color:var(--brand);text-decoration:none;transition:color .16s ease;}
a:hover{color:var(--brand-hover);}
img{max-width:100%;height:auto;display:block;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(15,92,122,.2);border-radius:6px;}
.container{
  width:100%;
  max-width:var(--max);
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
.num{font-family:"Inter","Helvetica Neue",Arial,sans-serif;font-variant-numeric:tabular-nums;}

/* ---------- Header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(255,255,255,.97);
  border-bottom:1px solid #E3EBF0;
  backdrop-filter:saturate(140%) blur(6px);
  transition:box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh-2);}
.header-inner{
  display:flex;
  align-items:center;
  gap:24px;
  min-height:72px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.logo-mark{width:32px;height:32px;flex-shrink:0;}
.logo-text{
  font-size:19px;
  font-weight:700;
  color:var(--ink);
  letter-spacing:.01em;
  line-height:1.2;
}
.main-nav{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:16px;
}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:44px;
  padding:0 14px;
  font-size:15.5px;
  font-weight:500;
  color:var(--text);
  border-radius:8px;
  transition:color .16s ease,background .16s ease;
}
.nav-link:hover{color:var(--brand);background:var(--brand-soft);}
.nav-link.is-active{color:var(--brand);}
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:14px;
  right:14px;
  bottom:6px;
  height:2px;
  background:var(--accent);
  border-radius:2px;
}
.header-actions{
  display:flex;
  align-items:center;
  gap:12px;
  margin-left:auto;
}
.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(--ink);
  font-size:18px;
  cursor:pointer;
  transition:border-color .16s ease,color .16s ease;
}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand);}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:11px 22px;
  font-size:15px;
  font-weight:600;
  line-height:1.4;
  border-radius:var(--r-sm);
  border:1px solid transparent;
  transition:background .16s ease,color .16s ease,border-color .16s ease,box-shadow .16s ease,transform .16s ease;
}
.btn:hover{transform:translateY(-1px);}
.btn:active{transform:translateY(0);}
.btn-pill{border-radius:var(--r-pill);}
.btn-primary{
  --bs-btn-bg:var(--brand);
  --bs-btn-border-color:var(--brand);
  --bs-btn-color:#fff;
  --bs-btn-hover-bg:var(--brand-hover);
  --bs-btn-hover-border-color:var(--brand-hover);
  --bs-btn-hover-color:#fff;
  --bs-btn-active-bg:var(--brand-active);
  --bs-btn-active-border-color:var(--brand-active);
  --bs-btn-active-color:#fff;
  background:var(--brand);
  border-color:var(--brand);
  color:#fff;
  box-shadow:var(--sh-1);
}
.btn-primary:hover{background:var(--brand-hover);border-color:var(--brand-hover);color:#fff;box-shadow:var(--sh-2);}
.btn-primary:active,.btn-primary:focus{background:var(--brand-active);border-color:var(--brand-active);color:#fff;}
.btn-outline-brand{
  background:transparent;
  border:1px solid var(--brand);
  color:var(--brand);
}
.btn-outline-brand:hover{background:var(--brand-soft);color:var(--brand-active);box-shadow:var(--sh-1);}
.btn-lg{min-height:48px;padding:13px 26px;font-size:16px;}
.btn-sm{min-height:40px;padding:9px 18px;font-size:14.5px;}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14.5px;
  font-weight:600;
  color:var(--brand);
}
.text-link i{transition:transform .16s ease;}
.text-link:hover i{transform:translateX(4px);}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  background:linear-gradient(180deg,#F4F8FA 0%,#FBFCFD 100%);
  padding:clamp(48px,6vw,80px) 0 clamp(56px,7vw,96px);
  overflow:hidden;
}
.hero::after{
  content:"";
  position:absolute;
  inset:auto 0 0 0;
  height:1px;
  background:linear-gradient(90deg,transparent,var(--line),transparent);
}
.hero-grid{
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:48px;
  align-items:center;
}
.hero-eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border-radius:var(--r-pill);
  background:#fff;
  border:1px solid var(--line);
  color:var(--brand);
  font-size:13.5px;
  font-weight:600;
  letter-spacing:.01em;
  box-shadow:var(--sh-1);
}
.hero h1{
  margin-top:20px;
  font-size:clamp(30px,3.4vw,44px);
  line-height:1.24;
  letter-spacing:-.01em;
}
.hero h1 .hl{
  color:var(--brand);
  box-shadow:inset 0 -10px 0 rgba(196,113,58,.16);
}
.hero-sub{
  margin-top:18px;
  font-size:17px;
  line-height:1.85;
  color:var(--muted);
  max-width:560px;
}
.hero-cta{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:28px;
}
.hero-tags{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:0;
  margin-top:26px;
  font-size:13.5px;
  color:var(--muted);
}
.hero-tags li{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:0 16px;
  border-right:1px solid var(--line);
}
.hero-tags li:first-child{padding-left:0;}
.hero-tags li:last-child{border-right:none;}
.hero-tags i{color:var(--accent);font-size:14px;}
.hero-visual{position:relative;}
.hero-visual img{
  width:100%;
  aspect-ratio:5/4;
  object-fit:cover;
  border-radius:18px;
  border:1px solid var(--line);
  box-shadow:var(--sh-2);
}
.hero-float-card{
  position:absolute;
  left:-24px;
  bottom:-24px;
  width:min(290px,86%);
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:16px 18px;
  box-shadow:var(--sh-3);
}
.hero-float-card .fc-title{
  font-size:13px;
  font-weight:600;
  color:var(--muted);
  letter-spacing:.02em;
  text-transform:uppercase;
}
.hero-float-card .fc-row{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:9px 0;
  border-bottom:1px dashed var(--line-soft);
  font-size:13.5px;
}
.hero-float-card .fc-row:last-child{border-bottom:none;padding-bottom:0;}
.hero-float-card .fc-row span:first-child{color:var(--muted);}
.hero-float-card .fc-row strong{color:var(--ink);font-weight:600;}
.dot-ok{display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--ok);margin-right:6px;}

/* ---------- Section basics ---------- */
.section{padding:clamp(56px,6.4vw,96px) 0;}
.section-alt{background:var(--bg-alt);}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:clamp(28px,3.4vw,44px);
}
.section-head .head-main{max-width:680px;}
.section-head h2{
  font-size:clamp(24px,2.4vw,32px);
  line-height:1.3;
}
.section-sub{
  margin-top:12px;
  font-size:16px;
  color:var(--muted);
  line-height:1.85;
}
.eyebrow{
  display:inline-block;
  font-size:13px;
  font-weight:700;
  letter-spacing:.06em;
  color:var(--accent);
  margin-bottom:10px;
}

/* ---------- Steps ---------- */
.steps-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
  position:relative;
}
.steps-grid::before{
  content:"";
  position:absolute;
  top:52px;
  left:9%;
  right:9%;
  border-top:1px dashed #CBDCE5;
  z-index:0;
}
.step-card{
  position:relative;
  z-index:1;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:28px 26px;
  box-shadow:var(--sh-1);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.step-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#CFE0E9;}
.step-num{
  display:block;
  font-family:"Inter","Helvetica Neue",Arial,sans-serif;
  font-size:44px;
  font-weight:700;
  line-height:1;
  color:rgba(196,113,58,.34);
  letter-spacing:-.02em;
  margin-bottom:14px;
}
.step-card h3{font-size:20px;font-weight:600;margin-bottom:10px;}
.step-card p{font-size:15px;line-height:1.8;color:var(--muted);}

/* ---------- Services ---------- */
.service-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:24px;
}
.service-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:28px;
  box-shadow:var(--sh-1);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.service-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#CFE0E9;}
.service-icon{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:46px;height:46px;
  border-radius:12px;
  background:var(--brand-soft);
  color:var(--brand);
  font-size:19px;
  margin-bottom:18px;
}
.service-card h3{font-size:20px;font-weight:600;margin-bottom:10px;}
.service-card p{font-size:15px;color:var(--muted);line-height:1.85;margin-bottom:16px;}

/* ---------- Stats ---------- */
.stats-band{
  background:#fff;
  border:1px solid var(--line);
  border-radius:18px;
  padding:clamp(24px,3vw,38px);
  box-shadow:var(--sh-1);
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
  margin-top:28px;
}
.stat-item{position:relative;padding-left:18px;}
.stat-item::before{
  content:"";
  position:absolute;
  left:0;top:6px;
  width:3px;height:26px;
  border-radius:2px;
  background:var(--accent);
}
.stat-num{
  font-family:"Inter","Helvetica Neue",Arial,sans-serif;
  font-size:32px;
  font-weight:700;
  color:var(--brand);
  line-height:1.2;
  letter-spacing:-.01em;
}
.stat-num small{font-size:15px;font-weight:600;margin-left:2px;color:var(--brand);}
.stat-label{
  display:block;
  margin-top:6px;
  font-size:13px;
  color:var(--muted);
  line-height:1.7;
}

/* ---------- Cases ---------- */
.case-grid{
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:24px;
  align-items:stretch;
}
.case-main{
  display:flex;
  flex-direction:column;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:transform .18s ease,box-shadow .18s ease;
}
.case-main:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.case-main img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
}
.case-main .case-body{padding:26px 28px 28px;}
.case-tag{
  display:inline-block;
  padding:5px 12px;
  border-radius:var(--r-pill);
  background:var(--brand-soft);
  color:var(--brand);
  font-size:12.5px;
  font-weight:600;
  margin-bottom:14px;
}
.case-main h3{font-size:22px;line-height:1.4;margin-bottom:12px;}
.case-main p{font-size:15px;color:var(--muted);line-height:1.85;}
.case-metrics{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:16px;
  margin-top:22px;
  padding-top:20px;
  border-top:1px solid var(--line-soft);
}
.case-metrics .m-num{
  font-family:"Inter","Helvetica Neue",Arial,sans-serif;
  font-size:28px;
  font-weight:700;
  color:var(--brand);
  line-height:1.2;
}
.case-metrics .m-label{font-size:13px;color:var(--muted);margin-top:4px;}
.case-side{display:grid;grid-template-rows:1fr 1fr;gap:24px;}
.case-mini{
  display:flex;
  gap:18px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:20px;
  box-shadow:var(--sh-1);
  transition:transform .18s ease,box-shadow .18s ease;
}
.case-mini:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.case-mini img{
  width:96px;
  aspect-ratio:1/1;
  object-fit:cover;
  border-radius:10px;
  border:1px solid var(--line);
  flex-shrink:0;
}
.case-mini h4{font-size:16.5px;line-height:1.5;margin-bottom:8px;font-weight:600;}
.case-mini p{font-size:13.5px;color:var(--muted);line-height:1.7;}

/* ---------- CMS list ---------- */
.cms-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.post-card{
  display:flex;
  flex-direction:column;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-1);
  color:inherit;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.post-card:hover{
  transform:translateY(-2px);
  box-shadow:var(--sh-2);
  border-color:#CFE0E9;
  color:inherit;
}
.post-thumb{overflow:hidden;}
.post-thumb img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  transition:transform .3s ease;
}
.post-card:hover .post-thumb img{transform:scale(1.03);}
.post-body{
  display:flex;
  flex-direction:column;
  flex:1;
  padding:22px 24px 24px;
}
.badge-soft{
  align-self:flex-start;
  display:inline-block;
  padding:5px 12px;
  border-radius:var(--r-pill);
  background:var(--brand-soft);
  color:var(--brand);
  font-size:12.5px;
  font-weight:600;
  margin-bottom:12px;
}
.post-title{
  font-size:17px;
  font-weight:600;
  line-height:1.55;
  color:var(--ink);
  margin-bottom:10px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.post-excerpt{
  font-size:14px;
  color:var(--muted);
  line-height:1.8;
  margin-bottom:18px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.post-meta{
  margin-top:auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding-top:14px;
  border-top:1px solid var(--line-soft);
  font-size:13px;
  color:var(--muted);
}
.post-meta i{color:var(--brand);transition:transform .16s ease;}
.post-card:hover .post-meta i{transform:translateX(4px);}
.empty-state{
  min-height:220px;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:14px;
  text-align:center;
  background:#fff;
  border:1px dashed #CBDCE5;
  border-radius:var(--r-card);
  padding:40px 24px;
  color:var(--muted);
}
.empty-state i{font-size:26px;color:var(--brand);opacity:.7;}
.empty-state p{font-size:15px;}

/* ---------- FAQ ---------- */
.faq-grid{
  display:grid;
  grid-template-columns:5fr 7fr;
  gap:40px;
  align-items:start;
}
.faq-intro h2{font-size:clamp(24px,2.4vw,32px);line-height:1.3;}
.faq-intro p{margin-top:14px;font-size:15.5px;color:var(--muted);line-height:1.9;}
.contact-card{
  margin-top:26px;
  background:var(--brand-soft);
  border:1px solid #D6E6EE;
  border-radius:var(--r-card);
  padding:22px 24px;
}
.contact-card .cc-title{
  font-size:15px;
  font-weight:700;
  color:var(--ink);
  margin-bottom:8px;
}
.contact-card p{font-size:14px;color:#3F5C6B;line-height:1.8;margin-bottom:14px;}
.accordion{--bs-accordion-border-color:transparent;--bs-accordion-border-radius:0;--bs-accordion-inner-border-radius:0;}
.accordion-item{
  background:#fff;
  border:1px solid var(--line);
  border-left:3px solid transparent;
  border-radius:12px;
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color .18s ease,box-shadow .18s ease;
  box-shadow:var(--sh-1);
}
.accordion-item:has(.accordion-button:not(.collapsed)){
  border-left-color:var(--accent);
  box-shadow:var(--sh-2);
}
.accordion-button{
  font-size:17px;
  font-weight:600;
  color:var(--ink);
  padding:20px 52px 20px 22px;
  background:#fff;
  box-shadow:none;
  line-height:1.6;
}
.accordion-button:not(.collapsed){
  color:var(--brand);
  background:#F7FBFD;
  box-shadow:none;
}
.accordion-button:focus{box-shadow:none;border-color:transparent;}
.accordion-button::after{
  background-image:none;
  content:"+";
  font-family:"Inter","Helvetica Neue",Arial,sans-serif;
  font-size:22px;
  font-weight:400;
  color:var(--accent);
  width:24px;height:24px;
  display:flex;
  align-items:center;
  justify-content:center;
  transform:none;
  margin-left:auto;
  position:absolute;
  right:18px;
  top:50%;
  translate:0 -50%;
}
.accordion-button:not(.collapsed)::after{content:"–";transform:none;}
.accordion-body{
  padding:0 24px 22px 22px;
  font-size:15.5px;
  line-height:1.85;
  color:var(--muted);
}

/* ---------- CTA / Form ---------- */
.cta-panel{
  background:var(--brand-soft);
  border:1px solid #D6E6EE;
  border-radius:20px;
  padding:clamp(28px,4vw,56px);
  display:grid;
  grid-template-columns:5fr 7fr;
  gap:clamp(24px,3.4vw,48px);
  align-items:start;
}
.cta-panel h2{font-size:clamp(24px,2.4vw,32px);line-height:1.3;}
.cta-panel .cta-lead{
  margin-top:14px;
  font-size:15.5px;
  color:#3F5C6B;
  line-height:1.9;
}
.cta-points{margin-top:22px;display:grid;gap:12px;}
.cta-points li{
  display:flex;
  align-items:flex-start;
  gap:10px;
  font-size:15px;
  color:#28495A;
  line-height:1.7;
}
.cta-points i{color:var(--accent);font-size:13px;margin-top:6px;}
.cta-contact{
  margin-top:26px;
  padding-top:20px;
  border-top:1px solid #CFE2EC;
  font-size:14px;
  color:#3F5C6B;
  line-height:1.9;
}
.cta-contact strong{color:var(--ink);}
.form-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:clamp(22px,3vw,30px);
  box-shadow:var(--sh-2);
}
.form-card .form-title{
  font-size:17px;
  font-weight:700;
  color:var(--ink);
  margin-bottom:18px;
}
.form-label{
  font-size:14px;
  font-weight:600;
  color:var(--ink);
  margin-bottom:6px;
}
.form-label .req{color:var(--accent);margin-left:2px;}
.form-control,.form-select{
  min-height:48px;
  border-radius:var(--r-sm);
  border:1px solid #D8E2E9;
  font-size:15px;
  color:var(--text);
  padding:11px 14px;
  background-color:#fff;
  transition:border-color .16s ease,box-shadow .16s ease;
}
.form-control::placeholder{color:#8FA3AC;}
.form-control:focus,.form-select:focus{
  border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(15,92,122,.15);
  outline:none;
}
textarea.form-control{min-height:104px;resize:vertical;}
.form-note{
  margin-top:14px;
  font-size:12px;
  color:var(--muted);
  line-height:1.7;
}
.form-card .btn{width:100%;margin-top:6px;}

/* ---------- Footer ---------- */
.site-footer{
  background:var(--ink);
  color:#C7D6DE;
  padding:clamp(48px,5.6vw,72px) 0 0;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.3fr;
  gap:36px;
  padding-bottom:44px;
}
.footer-brand .logo-text{color:#fff;}
.footer-brand p{
  margin-top:16px;
  font-size:14px;
  line-height:1.9;
  color:#A9BFCA;
  max-width:300px;
}
.footer-col h4{
  font-size:14px;
  font-weight:700;
  color:#fff;
  letter-spacing:.04em;
  margin-bottom:16px;
}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{
  font-size:14px;
  color:#A9BFCA;
  text-decoration:none;
  transition:color .16s ease,text-underline-offset .16s ease;
}
.footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.footer-col p{font-size:14px;color:#A9BFCA;line-height:1.9;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  padding:20px 0 24px;
  display:flex;
  flex-wrap:wrap;
  gap:12px 24px;
  align-items:center;
  justify-content:space-between;
  font-size:13px;
  color:#8FA6B2;
}
.footer-bottom a{color:#8FA6B2;}
.footer-bottom a:hover{color:#fff;}

/* ---------- Responsive ---------- */
@media (max-width:1199px){
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero-visual{max-width:620px;}
  .hero-float-card{left:auto;right:0;bottom:-20px;}
  .case-grid{grid-template-columns:1fr;}
  .case-side{grid-template-rows:none;grid-template-columns:1fr 1fr;}
  .faq-grid{grid-template-columns:1fr;gap:28px;}
  .cta-panel{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cms-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:991px){
  .main-nav{margin-left:0;}
  .service-grid{grid-template-columns:1fr;}
  .stats-band{grid-template-columns:repeat(2,1fr);gap:20px;}
  .steps-grid{grid-template-columns:1fr;gap:16px;}
  .steps-grid::before{display:none;}
  .step-card{padding:22px 24px;border-left:2px solid #D6E6EE;background:#fff;}
  .step-num{font-size:34px;margin-bottom:10px;}
}
@media (max-width:767px){
  .container{padding-left:20px;padding-right:20px;}
  .header-inner{min-height:60px;}
  .logo-text{font-size:18px;}
  .logo-mark{width:28px;height:28px;}
  .nav-toggle{display:inline-flex;}
  .header-actions .btn-pill{display:none;}
  .main-nav{
    position:fixed;
    top:60px;
    left:0;right:0;
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    background:#fff;
    border-bottom:1px solid var(--line);
    box-shadow:var(--sh-2);
    padding:8px 20px 20px;
    max-height:calc(100vh - 60px);
    overflow-y:auto;
    z-index:1040;
  }
  body.nav-open .main-nav{display:flex;}
  body.nav-open{overflow:hidden;}
  .nav-link{
    height:48px;
    padding:0 4px;
    border-bottom:1px solid var(--line-soft);
    border-radius:0;
    width:100%;
  }
  .nav-link.is-active::after{display:none;}
  .nav-link.is-active{color:var(--brand);background:var(--brand-soft);padding-left:10px;}
  .hero{padding-top:36px;}
  .hero h1{font-size:clamp(26px,6.2vw,32px);line-height:1.28;}
  .hero-sub{font-size:15.5px;}
  .hero-cta .btn{width:100%;}
  .hero-tags{flex-direction:column;align-items:flex-start;gap:8px;}
  .hero-tags li{padding:0;border-right:none;}
  .hero-float-card{display:none;}
  .section{padding:56px 0;}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;}
  .cms-grid{grid-template-columns:1fr;}
  .case-side{grid-template-columns:1fr;}
  .case-mini{flex-direction:column;}
  .case-mini img{width:100%;aspect-ratio:16/10;}
  .case-metrics{grid-template-columns:1fr;gap:12px;}
  .stats-band{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .accordion-button{font-size:16px;padding:18px 48px 18px 18px;}
  .form-control,.form-select{font-size:16px;}
}
@media (max-width:519px){
  .hero-eyebrow{font-size:12.5px;padding:5px 12px;}
  .btn-lg{width:100%;}
  .service-card,.step-card{padding:22px 20px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
}

/* roulang page: category1 */
:root{
  --brand:#0F5C7A;
  --brand-hover:#0B4A63;
  --brand-active:#083A4E;
  --brand-soft:#EAF2F6;
  --accent:#C4713A;
  --ink:#0B2A3B;
  --text:#22333D;
  --muted:#5C7079;
  --line:#DFE8EE;
  --line-soft:#E3EBF0;
  --alt:#F3F7F9;
  --paper:#FBFCFD;
  --success:#1E8A6E;
  --danger:#B4453A;
  --r-lg:14px;
  --r-sm:10px;
  --r-xl:20px;
  --sh-1:0 1px 2px rgba(11,42,59,.06);
  --sh-2:0 10px 24px -14px rgba(11,42,59,.22);
  --sh-3:0 18px 40px -20px rgba(11,42,59,.30);
  --sp-sec:clamp(64px,7vw,104px);
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Inter","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5{color:var(--ink);font-weight:700;letter-spacing:0;line-height:1.28;margin:0;}
p{margin:0 0 1.15em;}
p:last-child{margin-bottom:0;}
a{color:var(--brand);text-decoration:none;transition:color .16s ease;}
a:hover{color:var(--brand-hover);}
img{max-width:100%;display:block;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(15,92,122,.25);border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px;}

/* ===== Header ===== */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(255,255,255,.97);
  border-bottom:1px solid var(--line-soft);
  transition:box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh-2);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--ink);}
.logo:hover{color:var(--ink);}
.logo-mark{width:32px;height:32px;flex:0 0 32px;}
.logo-text{font-size:19px;font-weight:700;letter-spacing:0;}
.main-nav{display:flex;align-items:center;gap:28px;}
.nav-link{
  position:relative;
  font-size:15.5px;font-weight:500;color:var(--text);
  padding:6px 0;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--accent);transform:scaleX(0);transform-origin:left;
  transition:transform .18s ease;
}
.nav-link:hover{color:var(--brand);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--brand);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:12px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-sm);
  font-size:15.5px;font-weight:600;border:1px solid transparent;
  transition:background-color .16s ease,color .16s ease,border-color .16s ease,transform .16s ease,box-shadow .16s ease;
  cursor:pointer;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--brand-hover);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{background:var(--brand-active);transform:translateY(0);}
.btn-outline{background:transparent;border-color:var(--brand);color:var(--brand);}
.btn-outline:hover{background:var(--brand-soft);color:var(--brand-active);transform:translateY(-1px);}
.btn-sm{height:40px;padding:0 20px;font-size:14.5px;}
.btn-pill{border-radius:999px;}
.btn-block{width:100%;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--brand);}
.link-arrow i{transition:transform .16s ease;font-size:12px;}
.link-arrow:hover i{transform:translateX(4px);}
.nav-toggle{
  display:none;width:44px;height:44px;align-items:center;justify-content:center;
  border:1px solid var(--line);background:#fff;border-radius:var(--r-sm);
  color:var(--ink);font-size:18px;cursor:pointer;
}

/* ===== Hero ===== */
.page-hero{
  position:relative;
  background:linear-gradient(180deg,#F4F8FA 0%,#FBFCFD 100%);
  border-bottom:1px solid var(--line-soft);
  padding:34px 0 40px;
  overflow:hidden;
}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--muted);margin-bottom:20px;}
.crumbs a{color:var(--muted);}
.crumbs a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:3px;}
.crumbs .sep{color:#B9C8D0;}
.crumbs .current{color:var(--brand);font-weight:600;}
.hero-grid{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:40px;align-items:center;}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--brand-soft);color:var(--brand-active);
  font-size:13px;font-weight:600;padding:6px 14px;border-radius:999px;margin-bottom:16px;
}
.hero-title{font-size:34px;line-height:1.26;margin-bottom:16px;}
.hero-title .hl{color:var(--brand);}
.hero-sub{font-size:16.5px;color:var(--muted);max-width:560px;margin-bottom:24px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;}
.hero-thumb{
  border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--sh-2);aspect-ratio:16/10;background:var(--brand-soft);
}
.hero-thumb img{width:100%;height:100%;object-fit:cover;}

/* ===== Section base ===== */
.section{padding:var(--sp-sec) 0;}
.section-alt{background:var(--alt);}
.section-head{max-width:720px;margin-bottom:40px;}
.section-head h2{font-size:30px;margin-bottom:12px;}
.section-head p{color:var(--muted);font-size:16px;margin:0;}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:700;letter-spacing:.04em;
  color:var(--accent);text-transform:uppercase;margin-bottom:10px;
}

/* ===== Layout with sticky toc ===== */
.layout-side{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,8fr);gap:48px;align-items:start;}
.toc{
  position:sticky;top:96px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:24px;box-shadow:var(--sh-1);
}
.toc h3{font-size:15px;margin-bottom:14px;color:var(--ink);}
.toc ul li{margin-bottom:2px;}
.toc ul a{
  display:block;padding:9px 12px;border-radius:8px;
  font-size:14.5px;color:var(--muted);border-left:3px solid transparent;
  transition:background-color .16s ease,color .16s ease,border-color .16s ease;
}
.toc ul a:hover{background:var(--brand-soft);color:var(--brand);border-left-color:var(--accent);}
.toc ul a.is-active{background:var(--brand-soft);color:var(--brand);font-weight:600;border-left-color:var(--accent);}
.toc-note{margin-top:18px;padding-top:18px;border-top:1px solid var(--line);font-size:13.5px;color:var(--muted);line-height:1.7;}
.toc-note a{font-weight:600;}

.content-block{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:28px;box-shadow:var(--sh-1);margin-bottom:24px;scroll-margin-top:96px;
  transition:box-shadow .18s ease,transform .18s ease;
}
.content-block:hover{box-shadow:var(--sh-2);}
.content-block h2{font-size:24px;margin-bottom:14px;}
.content-block p{color:var(--text);font-size:16px;}
.checklist{margin-top:18px;display:grid;gap:10px;}
.checklist li{display:flex;gap:10px;font-size:15.5px;color:var(--text);}
.checklist li i{color:var(--success);font-size:14px;margin-top:6px;flex:0 0 auto;}
.spec-table{
  display:grid;grid-template-columns:1fr 1fr;gap:0;
  border:1px solid var(--line);border-radius:var(--r-sm);overflow:hidden;margin-top:20px;
}
.spec-table .spec-item{padding:16px 18px;border-bottom:1px solid var(--line);border-right:1px solid var(--line);}
.spec-table .spec-item:nth-child(2n){border-right:none;}
.spec-table .spec-item:nth-last-child(1),.spec-table .spec-item:nth-last-child(2){border-bottom:none;}
.spec-item dt{font-size:13px;color:var(--muted);margin-bottom:4px;}
.spec-item dd{margin:0;font-size:15.5px;font-weight:600;color:var(--ink);}

/* ===== Matrix cards ===== */
.matrix{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.matrix-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:28px;box-shadow:var(--sh-1);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
  display:flex;flex-direction:column;
}
.matrix-card:hover{transform:translateY(-2px);box-shadow:var(--sh-3);border-color:#CFDEE7;}
.matrix-icon{
  width:46px;height:46px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:var(--brand-soft);color:var(--brand);font-size:18px;margin-bottom:18px;
}
.matrix-card h3{font-size:19px;margin-bottom:10px;}
.matrix-card p{font-size:15px;color:var(--muted);margin-bottom:18px;}
.matrix-card .link-arrow{margin-top:auto;}

/* ===== Stats band ===== */
.stats-band{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-xl);
  padding:34px 28px;box-shadow:var(--sh-1);
}
.stat-item{text-align:center;position:relative;}
.stat-item::after{content:"";position:absolute;right:-12px;top:16%;height:68%;width:1px;background:var(--line);}
.stat-item:last-child::after{display:none;}
.stat-num{font-size:32px;font-weight:700;color:var(--brand);line-height:1.2;letter-spacing:0;}
.stat-num .unit{font-size:18px;font-weight:600;margin-left:2px;}
.stat-label{font-size:13px;color:var(--muted);margin-top:6px;}

/* ===== FAQ ===== */
.faq-wrap{max-width:880px;margin:0 auto;}
.accordion-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg)!important;
  margin-bottom:14px;overflow:hidden;box-shadow:var(--sh-1);
}
.accordion-button{
  font-size:17px;font-weight:600;color:var(--ink);
  background:#fff;padding:20px 24px;border:none;box-shadow:none!important;
  display:flex;justify-content:space-between;gap:16px;align-items:center;
}
.accordion-button:not(.collapsed){background:var(--brand-soft);color:var(--brand-active);}
.accordion-button::after{display:none;}
.accordion-button .acc-icon{
  flex:0 0 auto;width:24px;height:24px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:rgba(196,113,58,.12);color:var(--accent);font-size:12px;
  transition:transform .18s ease;
}
.accordion-button:not(.collapsed) .acc-icon{transform:rotate(45deg);}
.accordion-body{
  padding:0 24px 22px;font-size:15.5px;line-height:1.85;color:var(--muted);
  border-left:3px solid transparent;
}
.accordion-body-inner{border-left:3px solid var(--accent);padding-left:16px;}

/* ===== CTA ===== */
.cta-band{
  background:var(--brand-soft);border-radius:var(--r-xl);
  padding:clamp(36px,5vw,56px) clamp(24px,5vw,64px);
  display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:40px;align-items:center;
  border:1px solid #DCEAF1;
}
.cta-band h2{font-size:28px;margin-bottom:12px;}
.cta-band p{color:var(--muted);font-size:15.5px;margin-bottom:20px;}
.cta-points{display:grid;gap:10px;margin-bottom:0;}
.cta-points li{display:flex;gap:10px;font-size:15.5px;color:var(--text);}
.cta-points li i{color:var(--accent);margin-top:6px;font-size:13px;}
.cta-card{
  background:#fff;border-radius:var(--r-lg);border:1px solid var(--line);
  padding:28px;box-shadow:var(--sh-2);
}
.cta-card h3{font-size:18px;margin-bottom:8px;}
.cta-card p{font-size:14.5px;color:var(--muted);margin-bottom:18px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
.cta-meta{margin-top:16px;font-size:12px;color:var(--muted);}

/* ===== Footer ===== */
.site-footer{background:var(--ink);color:#C7D6DE;padding:64px 0 0;margin-top:0;}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:40px;
  padding-bottom:44px;border-top:1px solid rgba(255,255,255,.08);padding-top:44px;
}
.site-footer .logo{color:#fff;}
.site-footer .logo:hover{color:#fff;}
.footer-brand p{font-size:14.5px;line-height:1.8;color:#A9BEC9;margin-top:16px;max-width:320px;}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px;font-weight:600;}
.footer-col ul li{margin-bottom:10px;}
.footer-col a{font-size:14.5px;color:#C7D6DE;transition:color .16s ease;}
.footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px;}
.footer-col p{font-size:14.5px;color:#A9BEC9;line-height:1.9;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  padding:22px 0 28px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13.5px;color:#8FA7B4;
}

/* ===== Responsive ===== */
@media (max-width:1199.98px){
  .hero-grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:32px;}
  .layout-side{grid-template-columns:minmax(0,1fr);gap:32px;}
  .toc{position:static;}
  .toc ul{display:flex;flex-wrap:wrap;gap:8px;}
  .toc ul li{margin-bottom:0;}
  .toc ul a{border-left:none;border:1px solid var(--line);border-radius:999px;padding:7px 14px;font-size:13.5px;}
  .toc ul a:hover,.toc ul a.is-active{border-color:var(--brand);}
}
@media (max-width:991.98px){
  .main-nav{
    position:fixed;top:60px;left:0;right:0;
    background:#fff;flex-direction:column;align-items:stretch;gap:0;
    padding:8px 20px 20px;border-bottom:1px solid var(--line);
    box-shadow:var(--sh-2);
    transform:translateY(-12px);opacity:0;pointer-events:none;
    transition:opacity .18s ease,transform .18s ease;
    max-height:calc(100vh - 60px);overflow-y:auto;
  }
  .main-nav.is-open{transform:translateY(0);opacity:1;pointer-events:auto;}
  .nav-link{padding:14px 4px;font-size:16px;border-bottom:1px solid var(--line-soft);min-height:48px;display:flex;align-items:center;}
  .nav-link::after{display:none;}
  .nav-link.is-active{color:var(--brand);}
  .nav-toggle{display:inline-flex;}
  .header-inner{height:60px;}
  .header-actions .btn-pill{display:none;}
  .main-nav .nav-cta{display:flex;margin-top:16px;width:100%;}
  .hero-grid{grid-template-columns:minmax(0,1fr);}
  .hero-thumb{aspect-ratio:16/9;}
  .hero-title{font-size:30px;}
  .stats-band{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px 20px;}
  .stat-item:nth-child(2)::after{display:none;}
  .cta-band{grid-template-columns:minmax(0,1fr);gap:28px;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px;}
}
@media (max-width:767.98px){
  .container{padding-left:20px;padding-right:20px;}
  .section{padding:56px 0;}
  .page-hero{padding:26px 0 32px;}
  .hero-title{font-size:28px;line-height:1.3;}
  .hero-sub{font-size:15.5px;}
  .section-head h2{font-size:24px;}
  .content-block{padding:22px;}
  .content-block h2{font-size:21px;}
  .matrix{grid-template-columns:minmax(0,1fr);}
  .spec-table{grid-template-columns:minmax(0,1fr);}
  .spec-table .spec-item{border-right:none;border-bottom:1px solid var(--line);}
  .spec-table .spec-item:nth-last-child(2){border-bottom:1px solid var(--line);}
  .spec-table .spec-item:last-child{border-bottom:none;}
  .cta-band h2{font-size:23px;}
  .accordion-button{font-size:16px;padding:18px;}
  .accordion-body{padding:0 18px 20px;}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:28px;padding-top:36px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .stat-num{font-size:28px;}
  .btn{min-height:44px;}
}
@media (max-width:519.98px){
  .hero-actions .btn{width:100%;}
  .stats-band{grid-template-columns:minmax(0,1fr);}
  .stat-item::after{display:none;}
  .cta-actions .btn{width:100%;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important;}
}

/* roulang page: article */
:root{
  --brand:#0F5C7A;
  --brand-hover:#0B4A63;
  --brand-active:#083A4E;
  --brand-soft:#EAF2F6;
  --accent:#C4713A;
  --ink:#0B2A3B;
  --text:#22333D;
  --muted:#5C7079;
  --line:#DFE8EE;
  --alt:#F3F7F9;
  --paper:#FBFCFD;
  --ok:#1E8A6E;
  --warn:#B4453A;
  --r-card:14px;
  --r-sm:10px;
  --sh-1:0 1px 2px rgba(11,42,59,.06);
  --sh-2:0 10px 24px -14px rgba(11,42,59,.22);
  --sh-3:0 18px 40px -20px rgba(11,42,59,.30);
  --bs-primary:#0F5C7A;
  --bs-primary-rgb:15,92,122;
  --bs-body-color:#22333D;
  --bs-body-bg:#FBFCFD;
  --bs-border-color:#DFE8EE;
  --bs-link-color:#0F5C7A;
  --bs-link-hover-color:#0B4A63;
  --bs-font-sans-serif:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Inter","Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--bs-font-sans-serif);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
body.nav-open{overflow:hidden;}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .16s ease;}
a:hover{color:var(--brand-hover);}
h1,h2,h3,h4,h5,h6{margin:0;font-weight:700;color:var(--ink);line-height:1.3;}
p{margin:0 0 1.1em;}
button{font-family:inherit;}
:focus-visible{outline:3px solid rgba(15,92,122,.28);outline-offset:2px;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}

/* ---------- Buttons ---------- */
.btn{
  --bs-btn-border-radius:10px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 24px;
  font-size:15.5px;
  font-weight:600;
  letter-spacing:0;
  border-radius:10px;
  transition:transform .16s ease,box-shadow .16s ease,background-color .16s ease,color .16s ease,border-color .16s ease;
}
.btn-primary{
  --bs-btn-bg:#0F5C7A;
  --bs-btn-border-color:#0F5C7A;
  --bs-btn-hover-bg:#0B4A63;
  --bs-btn-hover-border-color:#0B4A63;
  --bs-btn-active-bg:#083A4E;
  --bs-btn-active-border-color:#083A4E;
  --bs-btn-color:#ffffff;
  --bs-btn-hover-color:#ffffff;
  --bs-btn-active-color:#ffffff;
  --bs-btn-focus-shadow-rgb:15,92,122;
  box-shadow:var(--sh-1);
}
.btn-primary:hover{
  transform:translateY(-1px);
  box-shadow:0 10px 24px -14px rgba(11,42,59,.45);
}
.btn-outline-brand{
  background:transparent;
  border:1px solid var(--brand);
  color:var(--brand);
}
.btn-outline-brand:hover{
  background:rgba(15,92,122,.08);
  border-color:var(--brand-hover);
  color:var(--brand-hover);
  transform:translateY(-1px);
}
.btn-sm{
  height:40px;
  padding:0 20px;
  font-size:14.5px;
}
.btn-pill{border-radius:999px;}
.btn-block{width:100%;}
.btn-ghost{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:15px;
  font-weight:600;
  color:var(--brand);
  background:none;
  border:none;
  padding:0;
}
.btn-ghost i{transition:transform .16s ease;}
.btn-ghost:hover i{transform:translateX(4px);}

/* ---------- Header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(255,255,255,.97);
  backdrop-filter:saturate(180%) blur(10px);
  border-bottom:1px solid #E3EBF0;
  transition:box-shadow .18s ease;
}
.site-header.is-scrolled{
  box-shadow:0 1px 2px rgba(11,42,59,.06),0 10px 24px -16px rgba(11,42,59,.24);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:20px;
  height:72px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
}
.logo-mark{width:30px;height:30px;flex:0 0 auto;}
.logo-text{
  font-size:19px;
  font-weight:700;
  color:var(--ink);
  letter-spacing:0;
  line-height:1;
}
.main-nav{
  display:flex;
  align-items:center;
  gap:2px;
  margin-left:auto;
}
.nav-link{
  position:relative;
  display:inline-block;
  padding:10px 14px;
  font-size:15.5px;
  font-weight:500;
  color:var(--text);
  border-radius:8px;
  transition:color .16s ease,background-color .16s ease;
}
.nav-link:hover{color:var(--brand);background:rgba(15,92,122,.05);}
.nav-link.is-active{color:var(--brand);font-weight:600;}
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:14px;
  right:14px;
  bottom:1px;
  height:2px;
  border-radius:2px;
  background:var(--accent);
}
.header-actions{
  display:flex;
  align-items:center;
  gap:10px;
  margin-left:8px;
}
.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(--ink);
  font-size:17px;
  cursor:pointer;
  transition:background-color .16s ease,border-color .16s ease;
}
.nav-toggle:hover{background:var(--brand-soft);border-color:#CFE0E8;}

/* ---------- Breadcrumb ---------- */
.crumb-bar{
  background:var(--alt);
  border-bottom:1px solid var(--line);
}
.crumb-bar .container{
  padding-top:14px;
  padding-bottom:14px;
}
.breadcrumb-nav{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13.5px;
  color:var(--muted);
  margin:0;
}
.breadcrumb-nav a{
  color:var(--muted);
}
.breadcrumb-nav a:hover{
  color:var(--brand);
  text-decoration:underline;
  text-underline-offset:3px;
}
.breadcrumb-nav .sep{color:#B7C6CF;}
.breadcrumb-nav .current{
  color:var(--text);
  max-width:460px;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}

/* ---------- Article hero ---------- */
.article-hero{
  background:linear-gradient(180deg,#F4F8FA 0%,#FBFCFD 100%);
  border-bottom:1px solid var(--line);
  padding:clamp(34px,4.4vw,58px) 0 clamp(26px,3.4vw,42px);
}
.article-head{max-width:880px;}
.badge-soft{
  display:inline-flex;
  align-items:center;
  gap:6px;
  background:var(--brand-soft);
  color:var(--brand);
  font-size:13px;
  font-weight:600;
  padding:6px 14px;
  border-radius:999px;
  line-height:1.5;
}
.article-head h1{
  font-size:clamp(26px,3.2vw,36px);
  line-height:1.28;
  letter-spacing:-.2px;
  margin:18px 0 16px;
  color:var(--ink);
}
.meta-row{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px 18px;
  font-size:13.5px;
  color:var(--muted);
}
.meta-row span{display:inline-flex;align-items:center;gap:6px;}
.meta-row .dot{
  width:4px;
  height:4px;
  border-radius:50%;
  background:#C5D3DB;
  display:inline-block;
}

/* ---------- Article layout ---------- */
.article-wrap{
  padding:clamp(36px,4.6vw,62px) 0 clamp(52px,6vw,86px);
}
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 320px;
  gap:48px;
  align-items:start;
}
.article-main{min-width:0;}
.article-cover{
  margin:0 0 32px;
  border-radius:var(--r-card);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--sh-1);
}
.article-cover img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
}

.article-content{
  max-width:820px;
  font-size:17.5px;
  line-height:1.9;
  color:var(--text);
  overflow-wrap:break-word;
}
.article-content > :first-child{margin-top:0;}
.article-content p{margin:0 0 1.15em;}
.article-content h2{
  position:relative;
  font-size:24px;
  line-height:1.35;
  font-weight:600;
  color:var(--ink);
  margin:44px 0 14px;
  padding-left:14px;
}
.article-content h2::before{
  content:"";
  position:absolute;
  left:0;
  top:.34em;
  bottom:.34em;
  width:3px;
  border-radius:2px;
  background:var(--accent);
}
.article-content h3{
  font-size:20px;
  font-weight:600;
  color:var(--ink);
  margin:30px 0 12px;
}
.article-content h4{
  font-size:17.5px;
  font-weight:600;
  color:var(--ink);
  margin:24px 0 10px;
}
.article-content ul,
.article-content ol{
  margin:0 0 1.15em;
  padding-left:1.15em;
}
.article-content ol{list-style:decimal;}
.article-content ul{list-style:none;padding-left:1.1em;}
.article-content ul > li{position:relative;padding-left:6px;}
.article-content ul > li::before{
  content:"";
  position:absolute;
  left:-.85em;
  top:.72em;
  width:6px;
  height:6px;
  border-radius:2px;
  background:var(--accent);
}
.article-content li{margin-bottom:.45em;}
.article-content li > ul,
.article-content li > ol{margin-top:.45em;}
.article-content blockquote{
  margin:24px 0;
  padding:16px 22px;
  background:var(--alt);
  border-left:3px solid var(--accent);
  border-radius:0 10px 10px 0;
  color:var(--muted);
  font-size:16.5px;
}
.article-content blockquote p:last-child{margin-bottom:0;}
.article-content img{
  max-width:100%;
  height:auto;
  border-radius:12px;
  border:1px solid var(--line);
  margin:8px 0;
}
.article-content figure{margin:26px 0;}
.article-content figcaption{
  font-size:13px;
  color:var(--muted);
  text-align:center;
  margin-top:10px;
}
.article-content table{
  width:100%;
  border-collapse:collapse;
  margin:24px 0;
  font-size:15.5px;
}
.article-content th,
.article-content td{
  border:1px solid var(--line);
  padding:12px 14px;
  text-align:left;
  vertical-align:top;
}
.article-content th{
  background:var(--brand-soft);
  color:var(--brand);
  font-weight:600;
}
.article-content tbody tr:nth-child(even){background:#F8FBFC;}
.article-content a{
  color:var(--brand);
  text-decoration:underline;
  text-underline-offset:3px;
}
.article-content a:hover{color:var(--brand-hover);}
.article-content strong{font-weight:600;color:var(--ink);}
.article-content hr{
  border:0;
  border-top:1px solid var(--line);
  margin:36px 0;
}

/* ---------- Tags ---------- */
.tag-row{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  margin-top:42px;
  padding-top:26px;
  border-top:1px solid var(--line);
}
.tag-row .tag-label{
  font-size:13.5px;
  color:var(--muted);
  font-weight:600;
  margin-right:4px;
}
.tag{
  display:inline-flex;
  align-items:center;
  font-size:13px;
  padding:6px 14px;
  border-radius:999px;
  background:#fff;
  border:1px solid var(--line);
  color:var(--muted);
  transition:background-color .16s ease,color .16s ease,border-color .16s ease;
}
.tag:hover{
  background:var(--brand-soft);
  border-color:#CFE0E8;
  color:var(--brand);
}

/* ---------- Empty state ---------- */
.empty-state{
  text-align:center;
  padding:72px 24px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  color:var(--muted);
}
.empty-state i{
  display:block;
  font-size:34px;
  color:#B7CBD4;
  margin-bottom:16px;
}
.empty-state p{
  font-size:17px;
  color:var(--text);
  margin:0 0 20px;
}

/* ---------- Sidebar ---------- */
.article-side{
  position:sticky;
  top:96px;
  display:flex;
  flex-direction:column;
  gap:20px;
}
.side-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:22px;
  box-shadow:var(--sh-1);
  transition:box-shadow .18s ease;
}
.side-card:hover{box-shadow:var(--sh-2);}
.side-card h2,
.side-card h3{
  font-size:15.5px;
  font-weight:600;
  color:var(--ink);
  margin:0 0 14px;
  display:flex;
  align-items:center;
  gap:8px;
}
.side-card h2 i,
.side-card h3 i{color:var(--accent);font-size:14px;}
.toc-list{
  list-style:none;
  margin:0;
  padding:0;
  display:flex;
  flex-direction:column;
  gap:2px;
  font-size:14px;
}
.toc-list a{
  display:block;
  padding:7px 10px;
  color:var(--muted);
  border-radius:8px;
  border-left:2px solid transparent;
  line-height:1.55;
  transition:background-color .16s ease,color .16s ease,border-color .16s ease;
}
.toc-list a:hover,
.toc-list a.is-active{
  background:var(--brand-soft);
  color:var(--brand);
  border-left-color:var(--accent);
}
.side-posts{
  list-style:none;
  margin:0;
  padding:0;
  display:flex;
  flex-direction:column;
  gap:14px;
}
.side-posts li + li{
  padding-top:14px;
  border-top:1px dashed var(--line);
}
.side-posts a{
  display:block;
  font-size:14.5px;
  color:var(--text);
  line-height:1.6;
  transition:color .16s ease;
}
.side-posts a:hover{color:var(--brand);}
.side-posts .date{
  display:block;
  font-size:12.5px;
  color:var(--muted);
  margin-top:4px;
}
.side-cta{
  background:var(--brand-soft);
  border-color:#D3E3EB;
}
.side-cta p{
  font-size:14px;
  color:var(--muted);
  line-height:1.75;
  margin:0 0 16px;
}

/* ---------- Related ---------- */
.related-section{
  background:var(--alt);
  border-top:1px solid var(--line);
  padding:clamp(44px,5.4vw,78px) 0;
}
.section-head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:16px;
  margin-bottom:32px;
}
.section-head h2{
  font-size:clamp(22px,2.4vw,28px);
  color:var(--ink);
  letter-spacing:-.2px;
}
.section-head p{
  margin:8px 0 0;
  font-size:14.5px;
  color:var(--muted);
}
.related-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.card-post{
  display:flex;
  flex-direction:column;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-1);
  color:inherit;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.card-post:hover{
  transform:translateY(-2px);
  box-shadow:var(--sh-3);
  border-color:#CFE0E8;
  color:inherit;
}
.card-post .thumb{
  display:block;
  overflow:hidden;
  background:var(--alt);
}
.card-post .thumb img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  transition:transform .3s ease;
}
.card-post:hover .thumb img{transform:scale(1.03);}
.card-post .body{
  padding:20px 22px 22px;
  display:flex;
  flex-direction:column;
  flex:1 1 auto;
}
.card-post h3{
  font-size:16.5px;
  line-height:1.55;
  font-weight:600;
  color:var(--ink);
  margin:0 0 10px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.card-post .excerpt{
  font-size:14px;
  line-height:1.75;
  color:var(--muted);
  margin:0 0 16px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.card-post .foot{
  margin-top:auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-size:13px;
  color:var(--muted);
}
.card-post .foot i{
  color:var(--brand);
  transition:transform .16s ease;
}
.card-post:hover .foot i{transform:translateX(4px);}

/* ---------- CTA band ---------- */
.cta-band{
  background:var(--paper);
  padding:clamp(44px,5.4vw,76px) 0;
}
.cta-box{
  background:var(--brand-soft);
  border:1px solid #D8E7EF;
  border-radius:20px;
  padding:clamp(28px,4vw,52px) clamp(24px,4.4vw,60px);
  display:grid;
  grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);
  gap:36px;
  align-items:center;
}
.cta-box h2{
  font-size:clamp(22px,2.5vw,29px);
  color:var(--ink);
  letter-spacing:-.2px;
  margin-bottom:14px;
}
.cta-box p{
  font-size:15px;
  color:var(--muted);
  margin:0 0 20px;
}
.cta-points{
  list-style:none;
  margin:0 0 22px;
  padding:0;
  display:flex;
  flex-wrap:wrap;
  gap:10px 20px;
  font-size:14.5px;
  color:var(--text);
}
.cta-points li{display:inline-flex;align-items:center;gap:8px;}
.cta-points i{color:var(--ok);font-size:13px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
.cta-panel{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:24px;
  box-shadow:var(--sh-2);
}
.cta-panel h3{
  font-size:16px;
  font-weight:600;
  color:var(--ink);
  margin:0 0 6px;
}
.cta-panel .sub{
  font-size:13.5px;
  color:var(--muted);
  margin:0 0 18px;
}
.field{margin-bottom:14px;}
.field label{
  display:block;
  font-size:14px;
  font-weight:600;
  color:var(--ink);
  margin-bottom:6px;
}
.field .required{color:var(--accent);}
.form-control{
  height:48px;
  border-radius:10px;
  border:1px solid #D8E2E9;
  font-size:15px;
  color:var(--text);
  padding:0 14px;
  transition:border-color .16s ease,box-shadow .16s ease;
}
textarea.form-control{height:auto;min-height:92px;padding:12px 14px;line-height:1.7;}
.form-control::placeholder{color:#8FA2AC;}
.form-control:focus{
  border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(15,92,122,.15);
  outline:none;
}
.form-note{
  font-size:12px;
  color:var(--muted);
  line-height:1.7;
  margin:10px 0 0;
}

/* ---------- Footer ---------- */
.site-footer{
  background:var(--ink);
  color:#C7D6DE;
  padding:clamp(44px,5.4vw,72px) 0 0;
  font-size:14.5px;
  line-height:1.8;
}
.site-footer .logo-text{color:#fff;}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.15fr;
  gap:40px;
  padding-bottom:44px;
  border-bottom:1px solid rgba(255,255,255,.08);
}
.footer-brand p{
  color:#9FB6C1;
  font-size:14px;
  margin:16px 0 0;
  max-width:320px;
}
.footer-col h4{
  font-size:15px;
  color:#fff;
  margin:0 0 16px;
  font-weight:600;
}
.footer-col ul{
  list-style:none;
  margin:0;
  padding:0;
  display:flex;
  flex-direction:column;
  gap:10px;
}
.footer-col a{
  color:#C7D6DE;
  transition:color .16s ease;
}
.footer-col a:hover{
  color:#fff;
  text-decoration:underline;
  text-underline-offset:4px;
}
.footer-col p{color:#9FB6C1;font-size:14px;margin:0;}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:10px;
  padding:22px 0 28px;
  font-size:13px;
  color:#8CA6B2;
}

/* ---------- Responsive ---------- */
@media (max-width:1199.98px){
  .article-layout{grid-template-columns:minmax(0,1fr) 290px;gap:36px;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px;}
  .footer-grid .footer-col:last-child{grid-column:1 / -1;}
}
@media (max-width:991.98px){
  .container{padding-left:20px;padding-right:20px;}
  .header-inner{height:60px;gap:12px;}
  .logo-text{font-size:18px;}
  .nav-toggle{display:inline-flex;}
  .main-nav{
    position:fixed;
    top:60px;
    left:0;
    right:0;
    bottom:0;
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    margin-left:0;
    padding:6px 20px 28px;
    background:#fff;
    border-top:1px solid var(--line);
    overflow-y:auto;
    box-shadow:var(--sh-2);
  }
  .main-nav.is-open{display:flex;}
  .nav-link{
    padding:14px 4px;
    font-size:16px;
    border-bottom:1px solid var(--line);
    border-radius:0;
    min-height:48px;
    display:flex;
    align-items:center;
  }
  .nav-link:hover{background:transparent;}
  .nav-link.is-active::after{display:none;}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:30px;}
  .article-side{position:static;}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cta-box{grid-template-columns:minmax(0,1fr);gap:26px;}
  .article-content{font-size:17px;max-width:none;}
  .breadcrumb-nav .current{max-width:280px;}
}
@media (max-width:767.98px){
  .related-grid{grid-template-columns:minmax(0,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .footer-grid .footer-col:last-child{grid-column:auto;}
  .footer-brand{grid-column:1 / -1;}
  .article-head h1{font-size:26px;}
  .article-content h2{font-size:21px;margin-top:36px;}
  .article-content h3{font-size:18.5px;}
  .article-content{font-size:16.5px;line-height:1.85;}
  .section-head{margin-bottom:24px;}
  .cta-actions .btn{width:100%;}
}
@media (max-width:519.98px){
  .crumb-bar .container{padding-top:12px;padding-bottom:12px;}
  .breadcrumb-nav{font-size:13px;}
  .breadcrumb-nav .current{max-width:180px;}
  .article-hero{padding:28px 0 24px;}
  .meta-row{font-size:13px;gap:6px 14px;}
  .side-card{padding:18px;}
  .cta-box{padding:24px 20px;}
  .cta-panel{padding:20px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;font-size:12.5px;}
  .form-control{font-size:16px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category2 */
:root{
  --primary:#0F5C7A;
  --primary-hover:#0B4A63;
  --primary-active:#083A4E;
  --primary-soft:#EAF2F6;
  --accent:#C4713A;
  --ink:#0B2A3B;
  --body:#22333D;
  --muted:#5C7079;
  --line:#DFE8EE;
  --line-soft:#E3EBF0;
  --alt:#F3F7F9;
  --paper:#FBFCFD;
  --success:#1E8A6E;
  --warn:#B4453A;
  --radius:14px;
  --radius-sm:10px;
  --radius-lg:20px;
  --shadow-1:0 1px 2px rgba(11,42,59,.06);
  --shadow-2:0 10px 24px -14px rgba(11,42,59,.22);
  --shadow-3:0 18px 40px -20px rgba(11,42,59,.30);
  --section:clamp(64px,7vw,104px);
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Inter","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  color:var(--body);
  background:var(--paper);
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
body.nav-open{overflow:hidden;}
img{max-width:100%;display:block;}
a{color:var(--primary);text-decoration:none;transition:color .16s ease;}
a:hover{color:var(--primary-hover);}
h1,h2,h3,h4,h5{margin:0;color:var(--ink);font-weight:700;line-height:1.28;}
p{margin:0 0 1.2em;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(15,92,122,.20);border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px;}
.section{padding:var(--section) 0;}
.section-alt{background:var(--alt);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--accent);
  letter-spacing:.06em;text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:20px;height:3px;border-radius:2px;background:var(--accent);}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head h2{font-size:clamp(24px,2.6vw,32px);margin-bottom:12px;}
.section-head p{color:var(--muted);font-size:16px;margin:0;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(255,255,255,.97);
  border-bottom:1px solid var(--line-soft);
  backdrop-filter:saturate(180%) blur(6px);
  transition:box-shadow .18s ease;
}
.site-header.is-scrolled{box-shadow:var(--shadow-1);}
.header-inner{display:flex;align-items:center;gap:24px;height:72px;}
.logo{display:inline-flex;align-items:center;gap:10px;text-decoration:none;}
.logo-mark{width:30px;height:30px;flex:none;}
.logo-text{font-size:19px;font-weight:700;color:var(--ink);letter-spacing:.01em;line-height:1;}
.main-nav{display:flex;align-items:center;gap:28px;margin-left:auto;}
.nav-link{
  position:relative;display:inline-block;
  font-size:15.5px;font-weight:500;color:var(--body);
  padding:6px 0;text-decoration:none;transition:color .16s ease;
}
.nav-link:hover{color:var(--primary);}
.nav-link.is-active{color:var(--primary);}
.nav-link.is-active::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  border-radius:2px;background:var(--accent);
}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:6px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;
  border:1px solid var(--line);background:#fff;color:var(--primary);
  align-items:center;justify-content:center;font-size:17px;cursor:pointer;
  transition:all .16s ease;
}
.nav-toggle:hover{background:var(--primary-soft);border-color:#C8DDE7;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-sm);
  font-family:var(--font-sans);font-size:15.5px;font-weight:600;
  text-decoration:none;border:1px solid transparent;cursor:pointer;
  transition:background .16s ease,color .16s ease,border-color .16s ease,box-shadow .16s ease,transform .16s ease;
}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-pill{border-radius:999px;}
.btn-primary{background:var(--primary);border-color:var(--primary);color:#fff;box-shadow:var(--shadow-1);}
.btn-primary:hover{background:var(--primary-hover);border-color:var(--primary-hover);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-primary:active{background:var(--primary-active);border-color:var(--primary-active);transform:none;}
.btn-outline{background:transparent;border-color:var(--primary);color:var(--primary);}
.btn-outline:hover{background:var(--primary-soft);border-color:var(--primary-hover);color:var(--primary-hover);transform:translateY(-1px);}
.btn-outline:active{background:#DCEAF1;transform:none;}
.btn-light{background:#fff;border-color:var(--line);color:var(--primary);}
.btn-light:hover{border-color:var(--primary);color:var(--primary-hover);box-shadow:var(--shadow-1);}
.btn .fa-arrow-right{transition:transform .16s ease;}
.btn:hover .fa-arrow-right{transform:translateX(4px);}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14.5px;font-weight:600;color:var(--primary);
}
.text-link:hover{color:var(--primary-hover);text-decoration:underline;text-underline-offset:4px;}
.text-link .fa-arrow-right{transition:transform .16s ease;}
.text-link:hover .fa-arrow-right{transform:translateX(4px);}

/* ---------- badges ---------- */
.badge-tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;
  font-size:13px;font-weight:600;line-height:1.5;
  background:var(--primary-soft);color:var(--primary);
}
.badge-tag.accent{background:#FAEFE7;color:#9A5527;}

/* ---------- page hero ---------- */
.page-hero{
  background:linear-gradient(180deg,#F4F8FA 0%,#FFFFFF 100%);
  border-bottom:1px solid var(--line-soft);
  padding:34px 0 44px;
}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:44px;align-items:center;}
.crumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:13px;color:var(--muted);margin-bottom:20px;
}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--primary);text-decoration:underline;text-underline-offset:3px;}
.crumb .sep{color:#B4C5CE;}
.crumb .current{color:var(--primary);font-weight:600;}
.page-hero h1{
  font-size:clamp(26px,3.1vw,38px);
  line-height:1.26;margin-bottom:16px;letter-spacing:-.005em;
}
.page-hero .lead{font-size:16.5px;line-height:1.85;color:var(--muted);margin:0;max-width:54ch;}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.hero-meta span{
  font-size:13px;font-weight:600;color:var(--muted);
  display:inline-flex;align-items:center;gap:6px;
}
.hero-meta span i{color:var(--accent);}
.hero-meta .dot{color:#C9D5DC;}
.hero-thumb{
  border-radius:var(--radius);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow-2);
  aspect-ratio:16/10;background:#EAF2F6;
}
.hero-thumb img{width:100%;height:100%;object-fit:cover;}

/* ---------- filter + stats ---------- */
.filter-wrap{padding:36px 0 0;}
.filter-label{font-size:13px;font-weight:600;color:var(--muted);letter-spacing:.04em;margin-bottom:14px;}
.filter-bar{display:flex;flex-wrap:wrap;gap:10px;}
.filter-pill{
  display:inline-flex;align-items:center;gap:7px;
  padding:9px 18px;border-radius:999px;
  font-size:14px;font-weight:600;color:var(--body);
  background:#fff;border:1px solid var(--line);
  transition:all .16s ease;
}
.filter-pill i{font-size:12px;color:var(--muted);transition:color .16s ease;}
.filter-pill:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-soft);box-shadow:var(--shadow-1);}
.filter-pill:hover i{color:var(--primary);}
.filter-pill.is-active{background:var(--primary);border-color:var(--primary);color:#fff;box-shadow:var(--shadow-2);}
.filter-pill.is-active i{color:#BFDDE9;}
.stat-strip{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
  margin-top:34px;padding-top:30px;border-top:1px solid var(--line-soft);
}
.stat-num{font-size:32px;font-weight:700;color:var(--primary);line-height:1.15;letter-spacing:-.01em;}
.stat-num small{font-size:15px;font-weight:600;color:var(--muted);margin-left:4px;}
.stat-label{font-size:13px;color:var(--muted);margin-top:8px;line-height:1.7;}

/* ---------- zigzag cases ---------- */
.case-list{display:flex;flex-direction:column;gap:clamp(44px,5vw,72px);}
.case-row{display:grid;grid-template-columns:5fr 7fr;gap:clamp(24px,4vw,52px);align-items:center;}
.case-row.is-reverse .case-media{order:2;}
.case-media{
  border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--shadow-1);aspect-ratio:16/10;background:#E9F1F5;
  transition:box-shadow .18s ease,transform .18s ease;
}
.case-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.case-row:hover .case-media{box-shadow:var(--shadow-2);transform:translateY(-2px);}
.case-row:hover .case-media img{transform:scale(1.02);}
.case-body h2{font-size:20px;line-height:1.45;margin:14px 0 12px;}
.case-body p{font-size:15.5px;line-height:1.85;color:var(--muted);margin-bottom:16px;}
.case-points{display:grid;gap:9px;margin-bottom:20px;}
.case-points li{
  position:relative;padding-left:22px;
  font-size:14.5px;line-height:1.75;color:var(--body);
}
.case-points li::before{
  content:"";position:absolute;left:0;top:8px;
  width:8px;height:8px;border-radius:2px;background:var(--accent);
  opacity:.75;
}
.case-foot{display:flex;align-items:center;gap:18px;flex-wrap:wrap;}
.case-foot .meta{font-size:13px;color:var(--muted);}

/* ---------- timeline ---------- */
.timeline-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
  position:relative;margin-top:8px;
}
.timeline-item{
  position:relative;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);padding:26px 24px;box-shadow:var(--shadow-1);
  transition:box-shadow .18s ease,transform .18s ease,border-color .18s ease;
}
.timeline-item:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);border-color:#CFE1EA;}
.timeline-num{
  font-size:34px;font-weight:700;line-height:1;color:var(--accent);
  opacity:.85;letter-spacing:-.02em;
}
.timeline-item h3{font-size:17px;margin:14px 0 8px;}
.timeline-item p{font-size:14px;line-height:1.8;color:var(--muted);margin:0;}
.timeline-item::after{
  content:"";position:absolute;right:-16px;top:50%;
  width:8px;height:8px;border-radius:50%;background:#CBDDE6;
  transform:translateY(-50%);
}
.timeline-item:last-child::after{display:none;}

/* ---------- materials ---------- */
.material-grid{display:grid;grid-template-columns:5fr 7fr;gap:clamp(24px,4vw,48px);align-items:start;}
.material-intro h2{font-size:clamp(22px,2.4vw,30px);margin-bottom:14px;}
.material-intro p{color:var(--muted);font-size:15.5px;line-height:1.85;}
.material-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:clamp(24px,3vw,34px);box-shadow:var(--shadow-1);
}
.material-card h3{font-size:17px;margin-bottom:16px;}
.material-list{display:grid;gap:12px;margin-bottom:22px;}
.material-list li{
  display:flex;align-items:flex-start;gap:10px;
  font-size:14.5px;line-height:1.75;color:var(--body);
  padding-bottom:12px;border-bottom:1px dashed var(--line);
}
.material-list li:last-child{border-bottom:0;padding-bottom:0;}
.material-list i{color:var(--success);font-size:13px;margin-top:5px;flex:none;}
.material-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- faq ---------- */
.faq-grid{display:grid;grid-template-columns:5fr 7fr;gap:clamp(24px,4vw,48px);align-items:start;}
.faq-aside h2{font-size:clamp(22px,2.4vw,30px);margin-bottom:14px;}
.faq-aside p{color:var(--muted);font-size:15.5px;line-height:1.85;}
.faq-aside .contact-card{
  margin-top:22px;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);padding:22px;box-shadow:var(--shadow-1);
}
.faq-aside .contact-card h3{font-size:15.5px;margin-bottom:8px;}
.faq-aside .contact-card p{font-size:14px;margin-bottom:14px;}
.accordion-item{
  background:#fff;border:1px solid var(--line)!important;
  border-radius:var(--radius)!important;overflow:hidden;
  margin-bottom:12px;box-shadow:var(--shadow-1);
}
.accordion-item:last-child{margin-bottom:0;}
.accordion-button{
  position:relative;width:100%;
  padding:20px 62px 20px 22px;
  font-size:17px;font-weight:600;color:var(--ink);
  background:#fff;border:0;box-shadow:none!important;
  text-align:left;line-height:1.6;
}
.accordion-button:not(.collapsed){
  background:var(--primary-soft);color:var(--primary);
  box-shadow:inset 3px 0 0 var(--accent)!important;
}
.accordion-button::after{
  content:"+";
  position:absolute;right:20px;top:50%;
  width:26px;height:26px;margin:0;
  display:flex;align-items:center;justify-content:center;
  border-radius:50%;background:var(--primary-soft);color:var(--primary);
  font-size:18px;font-weight:600;line-height:1;
  background-image:none!important;
  transform:translateY(-50%)!important;
  transition:background .16s ease,color .16s ease;
}
.accordion-button:not(.collapsed)::after{content:"−";background:var(--primary);color:#fff;}
.accordion-button:focus{box-shadow:0 0 0 3px rgba(15,92,122,.15)!important;}
.accordion-body{
  padding:4px 24px 22px 22px;
  font-size:15.5px;line-height:1.85;color:var(--muted);
}

/* ---------- cta ---------- */
.cta-panel{
  background:var(--primary-soft);
  border:1px solid #D6E6EE;
  border-radius:var(--radius-lg);
  padding:clamp(30px,4.4vw,58px);
  display:grid;grid-template-columns:6fr 6fr;gap:clamp(24px,4vw,48px);
  align-items:center;
}
.cta-panel h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:14px;}
.cta-panel>div>p{color:#3D5A68;font-size:15.5px;line-height:1.85;margin-bottom:18px;}
.cta-list{display:grid;gap:10px;}
.cta-list li{
  display:flex;align-items:flex-start;gap:10px;
  font-size:14.5px;color:var(--body);line-height:1.7;
}
.cta-list i{color:var(--primary);font-size:13px;margin-top:5px;flex:none;}
.cta-actions{background:#fff;border:1px solid #D9E8EF;border-radius:var(--radius);padding:clamp(22px,3vw,30px);box-shadow:var(--shadow-2);}
.cta-actions p{font-size:14px;color:var(--muted);line-height:1.8;margin-bottom:18px;}
.cta-actions .btn{width:100%;}
.cta-actions .btn + .btn{margin-top:12px;}
.cta-note{font-size:12px;color:var(--muted);margin:14px 0 0;line-height:1.7;}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:#C7D6DE;padding:clamp(48px,5vw,72px) 0 0;margin-top:0;}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px;
  padding-bottom:44px;border-top:1px solid rgba(255,255,255,.08);padding-top:44px;
}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand .logo-text{color:#fff;}
.footer-brand p{font-size:14px;line-height:1.85;color:#9FB6C2;margin:0;max-width:34ch;}
.footer-col h4{font-size:14px;color:#fff;letter-spacing:.04em;margin-bottom:16px;font-weight:600;}
.footer-col ul{display:grid;gap:10px;}
.footer-col li a{font-size:14px;color:#B4C8D3;transition:color .16s ease;}
.footer-col li a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px;}
.footer-col p{font-size:14px;line-height:1.9;color:#9FB6C2;margin:0;}
.footer-bottom{
  display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;
  padding:20px 0 26px;border-top:1px solid rgba(255,255,255,.08);
  font-size:13px;color:#8CA5B2;
}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .main-nav{gap:22px;}
}
@media (max-width:991.98px){
  .header-inner{height:60px;}
  .nav-toggle{display:inline-flex;}
  .main-nav{
    position:absolute;top:100%;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:0;
    background:#fff;border-bottom:1px solid var(--line);
    box-shadow:var(--shadow-2);
    padding:6px 20px 20px;display:none;
  }
  .main-nav.is-open{display:flex;}
  .nav-link{
    display:flex;align-items:center;height:48px;padding:0;
    border-bottom:1px solid var(--line-soft);font-size:16px;
  }
  .nav-link.is-active::after{display:none;}
  .nav-link.is-active{color:var(--primary);font-weight:600;}
  .header-actions .btn-sm{height:36px;padding:0 15px;font-size:13.5px;}
  .hero-grid{grid-template-columns:1fr;gap:28px;}
  .hero-thumb{display:none;}
  .stat-strip{grid-template-columns:repeat(2,1fr);gap:22px;}
  .case-row{grid-template-columns:1fr;gap:24px;}
  .case-row.is-reverse .case-media{order:0;}
  .timeline-grid{grid-template-columns:repeat(2,1fr);}
  .timeline-item::after{display:none;}
  .material-grid{grid-template-columns:1fr;}
  .faq-grid{grid-template-columns:1fr;}
  .cta-panel{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:767.98px){
  .container{padding-left:20px;padding-right:20px;}
  .section{padding:56px 0;}
  .page-hero{padding:26px 0 34px;}
  .page-hero h1{font-size:26px;line-height:1.3;}
  .page-hero .lead{font-size:15.5px;}
  .hero-meta{margin-top:18px;}
  .filter-wrap{padding-top:26px;}
  .stat-strip{margin-top:26px;padding-top:24px;}
  .stat-num{font-size:26px;}
  .case-body h2{font-size:18px;}
  .timeline-grid{grid-template-columns:1fr;}
  .timeline-num{font-size:28px;}
  .accordion-button{font-size:16px;padding:18px 56px 18px 18px;}
  .accordion-body{padding:2px 18px 20px 18px;font-size:15px;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .cta-actions .btn{height:46px;}
}
@media (max-width:519.98px){
  .stat-strip{grid-template-columns:1fr 1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .filter-pill{padding:8px 14px;font-size:13.5px;}
  .logo-text{font-size:17px;}
  .header-actions .btn-sm{padding:0 12px;font-size:13px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none!important;animation:none!important;}
  .case-row:hover .case-media img{transform:none;}
}

/* roulang page: category3 */
:root{
  --brand:#0F5C7A;
  --brand-hover:#0B4A63;
  --brand-active:#083A4E;
  --brand-tint:#EAF2F6;
  --accent:#C4713A;
  --ink:#0B2A3B;
  --text:#22333D;
  --muted:#5C7079;
  --line:#DFE8EE;
  --line-soft:#E3EBF0;
  --alt:#F3F7F9;
  --paper:#FBFCFD;
  --ok:#1E8A6E;
  --warn:#B4453A;
  --r-lg:20px;
  --r-card:14px;
  --r-sm:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(11,42,59,.06);
  --sh-2:0 10px 24px -14px rgba(11,42,59,.22);
  --sh-3:0 18px 40px -20px rgba(11,42,59,.30);
  --section:clamp(64px,7vw,104px);
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Inter","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.8;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5{color:var(--ink);line-height:1.28;margin:0;font-weight:700;letter-spacing:0;}
p{margin:0 0 1.1em;}
p:last-child{margin-bottom:0;}
a{color:var(--brand);text-decoration:none;transition:color .16s ease;}
a:hover{color:var(--brand-hover);}
img{max-width:100%;display:block;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:3px solid rgba(15,92,122,.32);outline-offset:2px;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-inline:24px;
}

/* ---------- 按钮 ---------- */
.btn-brand,.btn-ghost,.btn-soft{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-sm);
  font-size:16px;font-weight:600;line-height:1;letter-spacing:0;
  border:1px solid transparent;cursor:pointer;
  transition:background .16s ease,color .16s ease,border-color .16s ease,box-shadow .16s ease,transform .16s ease;
}
.btn-brand{background:var(--brand);border-color:var(--brand);color:#fff;box-shadow:var(--sh-1);}
.btn-brand:hover{background:var(--brand-hover);border-color:var(--brand-hover);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-brand:active{background:var(--brand-active);border-color:var(--brand-active);transform:none;}
.btn-ghost{background:transparent;border-color:var(--brand);color:var(--brand);}
.btn-ghost:hover{background:rgba(15,92,122,.08);color:var(--brand-hover);transform:translateY(-1px);}
.btn-ghost:active{background:rgba(15,92,122,.14);transform:none;}
.btn-soft{background:var(--brand-tint);border-color:transparent;color:var(--brand-active);}
.btn-soft:hover{background:#DCEAF1;color:var(--brand-active);}
.btn-sm{height:40px;padding:0 18px;font-size:14.5px;}
.btn-pill{border-radius:var(--r-pill);}
.btn-block{width:100%;}
.btn-brand:focus-visible,.btn-ghost:focus-visible,.btn-soft:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(15,92,122,.22);}

.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--brand);}
.link-arrow i{font-size:12px;transition:transform .16s ease;}
.link-arrow:hover i{transform:translateX(4px);}

.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 12px;border-radius:var(--r-pill);
  background:var(--brand-tint);color:var(--brand-active);
  font-size:13px;font-weight:600;line-height:1.4;
}
.tag-warm{background:rgba(196,113,58,.12);color:#8E4E23;}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(255,255,255,.97);
  border-bottom:1px solid var(--line-soft);
  transition:box-shadow .18s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh-2);}
.header-inner{display:flex;align-items:center;gap:20px;height:72px;}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--ink);}
.logo:hover{color:var(--ink);}
.logo-mark{width:32px;height:32px;flex:0 0 32px;}
.logo-text{font-size:19px;font-weight:700;letter-spacing:0;white-space:nowrap;}
.main-nav{display:flex;align-items:center;gap:28px;margin-left:auto;}
.nav-link{
  position:relative;display:inline-block;
  padding:6px 0;font-size:15.5px;font-weight:500;color:var(--text);letter-spacing:0;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;
  background:var(--accent); border-radius:2px;
  transform:scaleX(0);transform-origin:left center;transition:transform .16s ease;
}
.nav-link:hover{color:var(--brand);}
.nav-link:hover::after{transform:scaleX(.55);}
.nav-link.is-active{color:var(--brand);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:10px;margin-left:8px;}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:var(--r-sm);
  border:1px solid var(--line);background:#fff;color:var(--brand);
  font-size:18px;cursor:pointer;transition:background .16s ease,color .16s ease;
}
.nav-toggle:hover{background:var(--brand-tint);}
body.nav-open{overflow:hidden;}

/* ---------- 面包屑 ---------- */
.crumb-bar{padding:18px 0 0;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--muted);}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:3px;}
.crumb i{font-size:9px;color:#9FB2BC;}
.crumb .current{color:var(--brand);font-weight:600;}

/* ---------- Hero ---------- */
.page-hero{
  background:linear-gradient(180deg,#F4F8FA 0%,#FBFCFD 100%);
  border-bottom:1px solid var(--line);
  padding:20px 0 56px;
}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.02em;color:var(--brand-active);
  background:#fff;border:1px solid #D5E4EC;border-radius:var(--r-pill);
  padding:6px 14px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);}
.hero-title{
  font-size:clamp(28px,3.6vw,40px);
  line-height:1.25;
  margin:18px 0 14px;
  color:var(--ink);
}
.hero-sub{font-size:17px;color:var(--muted);max-width:34em;margin-bottom:26px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:26px;font-size:13.5px;color:var(--muted);}
.hero-meta span{display:inline-flex;align-items:center;gap:7px;}
.hero-meta i{color:var(--brand);font-size:13px;}
.hero-figure{position:relative;}
.hero-figure img{
  width:100%;aspect-ratio:5/4;object-fit:cover;
  border-radius:var(--r-card);border:1px solid var(--line);
  box-shadow:var(--sh-2);
}
.hero-float{
  position:absolute;left:-14px;bottom:-18px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-3);padding:14px 18px;max-width:250px;
}
.hero-float strong{display:block;font-size:14px;color:var(--ink);margin-bottom:4px;}
.hero-float span{display:block;font-size:13px;color:var(--muted);line-height:1.6;}

/* ---------- 板块通用 ---------- */
.section{padding:var(--section) 0;}
.section-alt{background:var(--alt);}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head h2{font-size:clamp(24px,2.7vw,32px);margin-bottom:12px;}
.section-head p{color:var(--muted);font-size:16px;line-height:1.85;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}

/* ---------- 步骤卡 ---------- */
.step-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.step-card{
  height:100%;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 24px 28px;box-shadow:var(--sh-1);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.step-card:hover{transform:translateY(-2px);box-shadow:var(--sh-3);border-color:#CFE0E9;}
.step-num{
  font-size:42px;font-weight:700;line-height:1;letter-spacing:.02em;
  color:rgba(196,113,58,.34);
}
.step-card h3{font-size:19px;margin:14px 0 10px;}
.step-card .step-desc{font-size:14.5px;color:var(--muted);line-height:1.8;margin-bottom:14px;}
.check-list{font-size:14.5px;line-height:1.75;color:var(--muted);}
.check-list li{position:relative;padding-left:22px;margin-bottom:8px;}
.check-list li:last-child{margin-bottom:0;}
.check-list li::before{
  content:"\2713";position:absolute;left:0;top:0;
  font-size:13px;font-weight:700;color:var(--brand);
}

/* ---------- 指标带 ---------- */
.metric-band{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
  margin-top:40px;padding:28px 8px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);
}
.metric{text-align:center;padding:0 12px;border-right:1px solid var(--line-soft);}
.metric:last-child{border-right:none;}
.metric strong{display:block;font-size:32px;font-weight:700;color:var(--brand);line-height:1.2;letter-spacing:.01em;}
.metric span{display:block;font-size:13px;color:var(--muted);margin-top:4px;}

/* ---------- 对比表 ---------- */
.table-wrap{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);overflow-x:auto;
}
.compare-table{width:100%;min-width:760px;border-collapse:collapse;font-size:15px;}
.compare-table caption{
  text-align:left;padding:20px 22px 4px;font-size:14px;color:var(--muted);
}
.compare-table th,.compare-table td{
  padding:14px 20px;border-bottom:1px solid var(--line);text-align:left;vertical-align:middle;
}
.compare-table thead th{
  background:var(--brand-tint);color:var(--brand-active);
  font-size:14.5px;font-weight:600;letter-spacing:0;
}
.compare-table tbody th{
  background:#fff;font-weight:600;color:var(--ink);font-size:14.5px;
  position:sticky;left:0;z-index:1;border-right:1px solid var(--line);
}
.compare-table tbody tr:hover td,.compare-table tbody tr:hover th{background:#F7FBFC;}
.compare-table tbody tr:last-child th,.compare-table tbody tr:last-child td{border-bottom:none;}
.table-note{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin-top:18px;font-size:13.5px;color:var(--muted);}

/* ---------- 申请表单 ---------- */
.apply-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:32px;align-items:start;}
.apply-side .section-head{margin-bottom:24px;}
.point-list{display:grid;gap:14px;margin-bottom:26px;}
.point-list li{display:flex;gap:12px;font-size:15px;color:var(--text);line-height:1.8;}
.point-list i{color:var(--accent);font-size:14px;margin-top:6px;}
.contact-card{
  background:var(--brand-tint);border:1px solid #D5E4EC;border-radius:var(--r-card);
  padding:24px;
}
.contact-card h3{font-size:17px;margin-bottom:12px;}
.contact-card dl{margin:0;font-size:14.5px;color:#33525F;}
.contact-card dt{font-weight:600;color:var(--brand-active);margin-top:10px;}
.contact-card dt:first-child{margin-top:0;}
.contact-card dd{margin:2px 0 0;line-height:1.75;}
.apply-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:28px;box-shadow:var(--sh-2);
}
.apply-card h3{font-size:20px;margin-bottom:6px;}
.apply-card .form-lead{font-size:14px;color:var(--muted);margin-bottom:20px;}
.form-label{display:block;font-size:14px;font-weight:600;color:var(--ink);margin-bottom:6px;}
.form-star{color:var(--accent);margin-left:2px;}
.form-control,.form-select{
  width:100%;height:48px;padding:0 14px;
  border:1px solid #D8E2E9;border-radius:var(--r-sm);
  font-size:15px;color:var(--text);background:#fff;
  transition:border-color .16s ease,box-shadow .16s ease;
}
textarea.form-control{height:auto;min-height:112px;padding:12px 14px;line-height:1.7;resize:vertical;}
.form-control::placeholder{color:#93A6AF;}
.form-control:focus,.form-select:focus{
  border-color:var(--brand);box-shadow:0 0 0 3px rgba(15,92,122,.15);outline:none;
}
.form-control:invalid{border-color:#D8E2E9;}
.was-validated .form-control:invalid,.was-validated .form-select:invalid{
  border-color:#D08A83;box-shadow:0 0 0 3px rgba(180,69,58,.12);
}
.field{margin-bottom:16px;}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.form-note{font-size:12px;color:var(--muted);line-height:1.7;margin-top:12px;}
.form-tip{font-size:13px;color:var(--muted);margin-top:10px;min-height:20px;}
.form-tip.is-ok{color:var(--ok);font-weight:600;}

/* ---------- FAQ ---------- */
.faq-list{max-width:900px;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);margin-bottom:14px;overflow:hidden;
  transition:box-shadow .16s ease,border-color .16s ease,background .16s ease;
}
.faq-item:hover{box-shadow:var(--sh-2);border-color:#CFE0E9;}
.faq-item[open]{border-left:3px solid var(--accent);background:#F8FBFC;box-shadow:var(--sh-2);}
.faq-item summary{
  list-style:none;cursor:pointer;position:relative;
  padding:20px 56px 20px 22px;
  font-size:17px;font-weight:600;color:var(--ink);line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);
  font-size:22px;font-weight:400;color:var(--accent);line-height:1;
  transition:transform .16s ease;
}
.faq-item[open] summary::after{content:"–";}
.faq-answer{padding:0 22px 22px;font-size:15.5px;line-height:1.85;color:var(--muted);max-width:68ch;}
.faq-answer p{margin-bottom:10px;}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--brand-tint);
  border-radius:var(--r-lg);
  padding:clamp(32px,4vw,56px);
  display:grid;grid-template-columns:1.25fr auto;gap:28px;align-items:center;
}
.cta-band h2{font-size:clamp(22px,2.4vw,30px);margin-bottom:10px;}
.cta-band p{color:#3D5C6A;font-size:15.5px;max-width:36em;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink);color:#C7D6DE;
  padding:64px 0 0;margin-top:0;
  border-top:1px solid rgba(255,255,255,.08);
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px;padding-bottom:48px;}
.footer-brand .logo{margin-bottom:14px;}
.footer-brand .logo-text{color:#fff;}
.footer-brand p{font-size:14px;line-height:1.85;color:#A9BEC9;max-width:34em;}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:600;}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul a{color:#C7D6DE;font-size:14px;}
.footer-col ul a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.footer-col p{font-size:14px;line-height:1.85;color:#A9BEC9;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  padding:20px 0 24px;display:flex;flex-wrap:wrap;gap:10px 24px;
  justify-content:space-between;font-size:13px;color:#93A9B5;
}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .step-grid{grid-template-columns:repeat(2,1fr);}
  .hero-grid{gap:32px;}
}
@media (max-width:991.98px){
  .header-inner{height:60px;gap:12px;}
  .nav-toggle{display:inline-flex;}
  .main-nav{
    position:fixed;left:0;right:0;top:60px;
    display:flex;flex-direction:column;align-items:stretch;gap:0;
    background:#fff;border-bottom:1px solid var(--line);
    padding:8px 20px 20px;margin-left:0;
    box-shadow:var(--sh-3);
    transform:translateY(-10px);opacity:0;visibility:hidden;
    transition:opacity .18s ease,transform .18s ease,visibility .18s ease;
    max-height:calc(100vh - 60px);overflow-y:auto;
  }
  .main-nav.is-open{transform:none;opacity:1;visibility:visible;}
  .nav-link{height:48px;display:flex;align-items:center;font-size:16px;border-bottom:1px solid var(--line-soft);}
  .nav-link::after{display:none;}
  .nav-link.is-active{color:var(--brand);font-weight:600;}
  .header-actions{margin-left:auto;}
  .hero-grid{grid-template-columns:1fr;}
  .hero-figure{order:-1;}
  .hero-figure img{aspect-ratio:16/9;}
  .hero-float{display:none;}
  .apply-grid{grid-template-columns:1fr;}
  .metric-band{grid-template-columns:repeat(2,1fr);gap:20px 0;padding:22px 4px;}
  .metric:nth-child(2){border-right:none;}
  .metric:nth-child(1),.metric:nth-child(2){border-bottom:1px solid var(--line-soft);padding-bottom:18px;}
  .metric:nth-child(3),.metric:nth-child(4){padding-top:18px;}
  .cta-band{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:767.98px){
  .container{padding-inline:20px;}
  .section{padding:56px 0;}
  .page-hero{padding:12px 0 44px;}
  .hero-title{font-size:32px;line-height:1.25;}
  .hero-sub{font-size:16px;}
  .step-grid{grid-template-columns:1fr;}
  .field-row{grid-template-columns:1fr;}
  .metric-band{grid-template-columns:1fr;gap:0;padding:8px 0;}
  .metric{border-right:none;border-bottom:1px solid var(--line-soft);padding:18px 16px;}
  .metric:last-child{border-bottom:none;padding-bottom:18px;}
  .metric:nth-child(1),.metric:nth-child(2){padding-bottom:18px;border-bottom:1px solid var(--line-soft);}
  .metric:nth-child(3){padding-top:18px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .apply-card{padding:22px;}
  .btn-brand,.btn-ghost,.btn-soft{width:100%;}
  .header-actions .btn{width:auto;}
  .form-control,.form-select{font-size:16px;}
}
@media (max-width:519.98px){
  .hero-actions{flex-direction:column;align-items:stretch;}
  .cta-actions{flex-direction:column;align-items:stretch;}
  .hero-meta{flex-direction:column;gap:8px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none!important;animation:none!important;scroll-behavior:auto!important;}
}