/* roulang page: index */
:root{
  --brand:#1F6B52;
  --brand-600:#1B5C47;
  --brand-800:#14483A;
  --brand-900:#0B2B22;
  --accent:#E8622A;
  --accent-600:#D2551F;
  --cyan:#12B5A5;
  --bg:#F7F6F1;
  --bg-alt:#EDF1EA;
  --white:#FFFFFF;
  --text:#17201C;
  --text-2:#4A5750;
  --text-3:#7C8A83;
  --border:#DFE4DC;
  --line:#E8ECE6;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-1:0 1px 2px rgba(11,43,34,.06);
  --shadow-2:0 10px 26px rgba(11,43,34,.10);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font:MiSans,"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:17px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--brand);text-decoration:none;transition:color .18s var(--ease);}
a:hover{color:var(--accent);}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding-left:1.15em;}
button{font-family:inherit;cursor:pointer;}
input,textarea,select{font-family:inherit;font-size:16px;}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;}
.skip-link{
  position:absolute;left:-9999px;top:0;z-index:999;
  background:var(--brand);color:#fff;padding:10px 18px;border-radius:0 0 10px 0;
}
.skip-link:focus{left:0;color:#fff;}
.container{max-width:1200px;margin:0 auto;padding:0 24px;width:100%;}
.grid-x{display:flex;flex-flow:row wrap;align-items:stretch;}
.cell{flex:0 0 auto;width:100%;min-width:0;}
.gutter{margin-left:-12px;margin-right:-12px;}
.gutter>.cell{padding-left:12px;padding-right:12px;padding-bottom:24px;}
.section{padding:88px 0;}
.section--tight{padding:64px 0;}
.bg-white{background:var(--white);}
.bg-alt{background:var(--bg-alt);}
.bg-dark{background:var(--brand-900);color:#EAF1EC;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.08em;color:var(--brand);
  background:rgba(31,107,82,.08);border:1px solid rgba(31,107,82,.16);
  padding:5px 12px;border-radius:999px;margin-bottom:18px;
}
.eyebrow--light{color:#B7E3D5;background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.18);}
h1{font-size:clamp(28px,4.2vw,44px);line-height:1.25;font-weight:700;letter-spacing:-.01em;}
h2{font-size:clamp(22px,3vw,32px);line-height:1.3;font-weight:700;}
h3{font-size:20px;line-height:1.4;font-weight:600;}
.lead{font-size:17px;color:var(--text-2);line-height:1.9;}
.muted{color:var(--text-3);font-size:14px;}
.section-head{max-width:720px;margin-bottom:44px;}
.section-head p{margin-top:14px;color:var(--text-2);}
.section-head--row{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;max-width:none;}

/* Header */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(247,246,241,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 6px 20px rgba(11,43,34,.07);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:72px;}
.brand{display:flex;align-items:center;gap:12px;color:var(--text);}
.brand:hover{color:var(--text);}
.brand-mark{
  width:40px;height:40px;flex:0 0 40px;border-radius:12px;
  background:linear-gradient(140deg,var(--brand) 0%,var(--brand-800) 100%);
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-1);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:16px;font-weight:700;letter-spacing:.01em;}
.brand-text small{font-size:11px;color:var(--text-3);letter-spacing:.14em;}
.main-nav{display:flex;align-items:center;gap:6px;}
.main-nav a{
  position:relative;display:inline-block;padding:10px 12px;border-radius:8px;
  font-size:15px;color:var(--text-2);white-space:nowrap;
}
.main-nav a:hover{color:var(--brand);background:rgba(31,107,82,.06);}
.main-nav a.active{color:var(--brand);font-weight:600;}
.main-nav a.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--brand);border-radius:2px;
}
.header-actions{display:flex;align-items:center;gap:10px;}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--border);
  background:var(--white);border-radius:10px;align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);border-radius:2px;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* Buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1.5px solid transparent;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 6px 16px rgba(232,98,42,.22);}
.btn-primary:hover{background:var(--accent-600);color:#fff;transform:translateY(-1px);}
.btn-ghost{background:transparent;border-color:var(--brand);color:var(--brand);}
.btn-ghost:hover{background:rgba(31,107,82,.08);color:var(--brand);transform:translateY(-1px);}
.btn-solid{background:var(--brand);color:#fff;}
.btn-solid:hover{background:var(--brand-600);color:#fff;transform:translateY(-1px);}
.btn-sm{min-height:40px;padding:0 16px;font-size:14px;}
.btn-block{width:100%;}
.btn:active{transform:translateY(0);}

/* Hero */
.hero{
  position:relative;overflow:hidden;
  background:
    radial-gradient(900px 420px at 88% -10%,rgba(18,181,165,.12),transparent 70%),
    linear-gradient(180deg,#F7F6F1 0%,#F2F5EF 100%);
  padding:72px 0 56px;
}
.hero::after{
  content:"";position:absolute;inset:auto -120px -160px auto;width:520px;height:520px;
  border-radius:50%;border:1px solid rgba(31,107,82,.10);
  pointer-events:none;
}
.hero-grid{display:flex;flex-wrap:wrap;align-items:center;gap:44px;position:relative;z-index:2;}
.hero-copy{flex:1 1 460px;min-width:0;}
.hero-copy h1{margin-bottom:18px;}
.hero-sub{font-size:18px;color:var(--brand);font-weight:600;margin-bottom:16px;}
.hero-desc{color:var(--text-2);max-width:560px;margin-bottom:28px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:32px;}
.hero-trust{
  display:flex;flex-wrap:wrap;gap:12px 28px;list-style:none;padding:0;margin:0;
  border-top:1px solid var(--border);padding-top:20px;
}
.hero-trust li{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-2);}
.hero-trust svg{flex:0 0 16px;color:var(--brand);}
.hero-figure{flex:1 1 420px;min-width:0;}
.hero-figure img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:var(--radius-img);border:1px solid var(--border);
  box-shadow:var(--shadow-2);
}

/* Pain points */
.pain-list{list-style:none;padding:0;margin:0;max-width:860px;}
.pain-list li{
  display:flex;gap:20px;padding:22px 0;border-bottom:1px solid var(--line);
}
.pain-list li:last-child{border-bottom:0;}
.pain-index{
  flex:0 0 40px;height:40px;border-radius:10px;
  background:rgba(31,107,82,.08);color:var(--brand);
  display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:700;font-variant-numeric:tabular-nums;
  border-left:4px solid var(--brand);
}
.pain-list p{font-size:17px;color:var(--text);margin:0;padding-top:5px;}

/* Solution cards */
.solution-main{
  display:flex;flex-direction:column;background:var(--white);
  border:1px solid var(--border);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-1);height:100%;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease);
}
.solution-main:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}
.solution-main img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.solution-body{padding:26px;display:flex;flex-direction:column;gap:12px;flex:1;}
.icon-badge{
  width:40px;height:40px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  background:rgba(31,107,82,.09);color:var(--brand);flex:0 0 40px;
}
.solution-main .link-more,.card-mini .link-more{
  margin-top:auto;display:inline-flex;align-items:center;gap:6px;
  color:var(--brand);font-weight:600;font-size:15px;
}
.card-mini{
  display:flex;flex-direction:column;background:var(--white);
  border:1px solid var(--border);border-radius:var(--radius-card);
  padding:24px;height:100%;box-shadow:var(--shadow-1);
  transition:transform .18s var(--ease),box-shadow .18s var(--ease);
}
.card-mini:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}
.card-mini h3{margin:16px 0 10px;}
.card-mini p{color:var(--text-2);font-size:15.5px;}
.card-mini img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--radius-img);margin-top:20px;}

/* Stats */
.stats-band{background:var(--brand-900);color:#EAF1EC;position:relative;overflow:hidden;}
.stats-band::before{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  opacity:.14;
}
.stats-band .container{position:relative;z-index:2;}
.stats-head{margin-bottom:40px;color:#CFE5DA;}
.stats-head h2{color:#fff;}
.stats-row{display:flex;flex-wrap:wrap;}
.stat{
  flex:1 1 220px;padding:8px 28px;
  border-left:1px solid rgba(255,255,255,.16);
}
.stat:first-child{border-left:0;padding-left:0;}
.stat strong{
  display:block;font-size:clamp(30px,4vw,44px);font-weight:700;color:#fff;
  font-variant-numeric:tabular-nums;line-height:1.1;letter-spacing:-.02em;
}
.stat strong em{font-size:16px;font-style:normal;font-weight:600;color:#8FD6C2;margin-left:4px;}
.stat p{margin-top:10px;font-size:14px;color:rgba(234,241,236,.72);}

/* Posts */
.post-card{
  display:flex;flex-direction:column;height:100%;
  background:var(--white);border:1px solid var(--border);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-1);color:var(--text);
  transition:transform .18s var(--ease),box-shadow .18s var(--ease);
}
.post-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);color:var(--text);}
.post-card img{width:100%;aspect-ratio:16/9;object-fit:cover;border-bottom:1px solid var(--line);}
.post-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.badge{
  display:inline-flex;align-items:center;align-self:flex-start;
  font-size:13px;padding:3px 10px;border-radius:999px;
  background:rgba(31,107,82,.09);color:var(--brand);border:1px solid rgba(31,107,82,.14);
}
.badge--cyan{background:rgba(18,181,165,.10);color:#0E8C80;border-color:rgba(18,181,165,.25);}
.post-card h3{
  font-size:17px;line-height:1.5;font-weight:600;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-card:hover h3{color:var(--brand);}
.post-card p{
  color:var(--text-2);font-size:14.5px;line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-meta{
  margin-top:auto;padding-top:12px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;align-items:center;
  font-size:13px;color:var(--text-3);font-variant-numeric:tabular-nums;
}
.empty-state{
  border:1px dashed var(--border);border-radius:var(--radius-card);
  background:var(--white);padding:56px 24px;text-align:center;color:var(--text-2);
}
.empty-state svg{color:var(--brand);opacity:.5;margin-bottom:14px;}
.empty-state p{margin-bottom:18px;}

/* Privacy */
.privacy-box{
  background:var(--white);border:1px solid var(--border);border-radius:var(--radius-card);
  padding:36px;box-shadow:var(--shadow-1);
}
.privacy-box h2{font-size:22px;margin-bottom:12px;}
.privacy-list{list-style:none;padding:0;margin:20px 0 0;display:flex;flex-wrap:wrap;gap:16px 32px;}
.privacy-list li{display:flex;gap:10px;align-items:flex-start;flex:1 1 260px;font-size:15px;color:var(--text-2);}
.privacy-list svg{flex:0 0 18px;margin-top:6px;color:var(--cyan);}
.privacy-note{margin-top:22px;padding-top:18px;border-top:1px solid var(--line);font-size:14px;color:var(--text-3);}

/* FAQ */
.faq-list{display:flex;flex-direction:column;gap:12px;}
.faq-item{background:var(--white);border:1px solid var(--border);border-radius:var(--radius-card);overflow:hidden;}
.faq-q{
  width:100%;background:transparent;border:0;text-align:left;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;font-size:17px;font-weight:600;color:var(--text);
}
.faq-q:hover{color:var(--brand);}
.faq-arrow{flex:0 0 18px;transition:transform .25s var(--ease);color:var(--brand);}
.faq-item.open .faq-arrow{transform:rotate(180deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s var(--ease);}
.faq-item.open .faq-a{max-height:340px;}
.faq-a p{padding:0 22px 22px;font-size:15px;line-height:1.85;color:var(--text-2);}

/* CTA */
.cta-band{
  background:linear-gradient(135deg,var(--brand-800) 0%,var(--brand-900) 100%);
  color:#EAF1EC;border-radius:20px;padding:56px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;
}
.cta-band h2{color:#fff;margin-bottom:12px;}
.cta-band p{color:rgba(234,241,236,.78);max-width:560px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* Footer */
.site-footer{background:var(--brand-900);color:#CBDDD4;padding:64px 0 0;}
.footer-grid{display:flex;flex-wrap:wrap;gap:36px 24px;}
.footer-brand{flex:1 1 280px;min-width:0;}
.footer-brand .brand-text strong{color:#fff;}
.footer-brand .brand-text small{color:rgba(203,221,212,.6);}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.85;color:rgba(203,221,212,.75);max-width:320px;}
.footer-col{flex:1 1 160px;min-width:0;}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px;}
.footer-col ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px;}
.footer-col a,.footer-col span{font-size:14px;color:rgba(203,221,212,.78);}
.footer-col a:hover{color:var(--cyan);}
.footer-bottom{
  margin-top:48px;border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0 28px;display:flex;flex-wrap:wrap;gap:12px 24px;
  justify-content:space-between;font-size:13.5px;color:rgba(203,221,212,.62);
}
.footer-bottom a{color:rgba(203,221,212,.72);}
.footer-bottom a:hover{color:var(--cyan);}

/* Mobile drawer */
.drawer{
  position:fixed;inset:72px 0 0 0;z-index:70;background:var(--bg);
  padding:16px 20px 40px;transform:translateY(-8px);
  opacity:0;visibility:hidden;transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s;
  overflow-y:auto;
}
.drawer.open{opacity:1;visibility:visible;transform:translateY(0);}
.drawer a{
  display:flex;align-items:center;height:56px;font-size:18px;
  border-bottom:1px solid var(--line);color:var(--text);
}
.drawer a.active{color:var(--brand);font-weight:600;}
.drawer .btn{margin-top:24px;width:100%;}

/* Mobile bottom tab */
.mobile-tab{
  position:fixed;left:0;right:0;bottom:0;z-index:90;display:none;
  background:var(--white);border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
}
.mobile-tab ul{list-style:none;margin:0;padding:0;display:flex;}
.mobile-tab li{flex:1;}
.mobile-tab a,.mobile-tab button{
  position:relative;width:100%;height:60px;background:transparent;border:0;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  font-size:11px;color:var(--text-3);
}
.mobile-tab a.active,.mobile-tab button.tab-highlight{color:var(--brand);}
.mobile-tab a.active::before,.mobile-tab button.tab-highlight::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:26px;height:2px;background:var(--brand);border-radius:2px;
}
.mobile-tab button.tab-highlight .tab-dot{
  position:absolute;top:6px;right:calc(50% - 26px);
  width:8px;height:8px;border-radius:50%;background:var(--accent);
}

/* Modal */
.modal-mask{
  position:fixed;inset:0;z-index:120;background:rgba(11,43,34,.5);
  display:flex;align-items:center;justify-content:center;padding:20px;
  opacity:0;visibility:hidden;transition:opacity .22s var(--ease),visibility .22s;
}
.modal-mask.open{opacity:1;visibility:visible;}
.modal-panel{
  width:100%;max-width:540px;background:var(--white);border-radius:18px;
  padding:32px;box-shadow:0 24px 60px rgba(11,43,34,.28);
  transform:translateY(12px);transition:transform .22s var(--ease);
  max-height:90vh;overflow-y:auto;
}
.modal-mask.open .modal-panel{transform:translateY(0);}
.modal-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-bottom:8px;}
.modal-head h2{font-size:22px;}
.modal-close{
  width:44px;height:44px;flex:0 0 44px;border:1px solid var(--border);background:var(--white);
  border-radius:10px;font-size:20px;line-height:1;color:var(--text-2);
  display:flex;align-items:center;justify-content:center;
}
.modal-close:hover{color:var(--accent);border-color:var(--accent);}
.modal-desc{font-size:14.5px;color:var(--text-2);margin-bottom:22px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:14px;font-weight:600;margin-bottom:8px;}
.field input,.field textarea{
  width:100%;height:44px;padding:0 14px;border:1px solid var(--border);
  border-radius:10px;background:var(--white);color:var(--text);
  transition:border-color .18s var(--ease),background-color .18s var(--ease),box-shadow .18s var(--ease);
}
.field textarea{height:96px;padding:12px 14px;line-height:1.7;resize:vertical;}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);background:#F4F8F5;box-shadow:0 0 0 3px rgba(31,107,82,.10);
}
.field-error{display:none;margin-top:6px;font-size:13px;color:var(--accent-600);}
.field.has-error input,.field.has-error textarea{border-color:var(--accent);}
.field.has-error .field-error{display:block;}
.check-row{display:flex;gap:10px;align-items:flex-start;margin:6px 0 20px;font-size:14px;color:var(--text-2);}
.check-row input{width:18px;height:18px;margin-top:4px;accent-color:var(--brand);flex:0 0 18px;}
.form-tip{font-size:13px;color:var(--text-3);margin-top:14px;text-align:center;}
.form-state{display:none;margin-top:16px;padding:14px 16px;border-radius:10px;font-size:14.5px;}
.form-state.ok{display:block;background:rgba(18,181,165,.10);color:#0E8C80;border:1px solid rgba(18,181,165,.28);}
.btn[disabled]{opacity:.65;pointer-events:none;}

/* Back to top */
.to-top{
  position:fixed;right:24px;bottom:96px;z-index:95;
  width:46px;height:46px;border-radius:50%;border:1px solid var(--border);
  background:var(--white);color:var(--brand);box-shadow:var(--shadow-2);
  display:flex;align-items:center;justify-content:center;
  opacity:0;visibility:hidden;transition:opacity .2s var(--ease),visibility .2s,transform .2s var(--ease);
}
.to-top.show{opacity:1;visibility:visible;}
.to-top:hover{transform:translateY(-2px);}

/* Responsive */
@media (min-width:768px){
  .grid-2>.cell{width:50%;}
  .grid-3>.cell{width:50%;}
}
@media (min-width:1024px){
  .grid-3>.cell{width:33.3333%;}
  .grid-4>.cell{width:25%;}
  .span-8{width:66.6667%;}
  .span-4{width:33.3333%;}
}
@media (max-width:1023px){
  .main-nav{display:none;}
  .nav-toggle{display:flex;}
  .mobile-tab{display:block;}
  body{padding-bottom:80px;}
  .hero{padding:48px 0 40px;}
  .section{padding:64px 0;}
  .cta-band{padding:36px;}
  .to-top{bottom:84px;right:18px;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .header-actions .btn{display:none;}
  .section{padding:48px 0;}
  .hero-figure{order:-1;}
  .hero-grid{gap:28px;}
  .hero-copy{flex:1 1 100%;}
  .hero-figure{flex:1 1 100%;}
  .stats-row{flex-direction:column;}
  .stat{border-left:0;border-top:1px solid rgba(255,255,255,.16);padding:20px 0 0;margin-top:20px;flex:1 1 100%;}
  .stat:first-child{border-top:0;margin-top:0;padding-top:0;}
  .modal-mask{align-items:flex-end;padding:0;}
  .modal-panel{max-width:100%;border-radius:20px 20px 0 0;max-height:88vh;padding:26px 20px 34px;}
  .section-head--row{flex-direction:column;align-items:flex-start;}
  .cta-band{padding:28px 22px;border-radius:16px;}
  .footer-grid{gap:28px 20px;}
  .footer-col{flex:1 1 45%;}
  .footer-brand{flex:1 1 100%;}
  .privacy-box{padding:24px;}
  .pain-list li{gap:14px;}
}

/* roulang page: article */
:root{
  --c-main:#1F6B52;
  --c-main-600:#1A5B46;
  --c-main-700:#14483A;
  --c-deep:#0B2B22;
  --c-orange:#E8622A;
  --c-cyan:#12B5A5;
  --c-bg:#F7F6F1;
  --c-bg-alt:#EDF1EA;
  --c-white:#FFFFFF;
  --c-text:#17201C;
  --c-text-2:#4A5750;
  --c-text-3:#7C8A83;
  --c-border:#DFE4DC;
  --c-line:#E8ECE6;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --sh-1:0 1px 2px rgba(11,43,34,.06);
  --sh-2:0 10px 26px rgba(11,43,34,.10);
  --w-container:1200px;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:MiSans,"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:17px;
  line-height:1.85;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block}
a{color:var(--c-main);text-decoration:none}
a:hover{color:var(--c-main-600)}
button,input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--c-text);letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--c-main);color:#fff;padding:10px 16px;border-radius:0 0 10px 0;z-index:200}
.skip-link:focus{left:0}
.container{width:100%;max-width:var(--w-container);margin:0 auto;padding:0 24px}
:focus-visible{outline:2px solid var(--c-cyan);outline-offset:2px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;font-size:15px;font-weight:600;
  border-radius:var(--r-btn);border:1px solid transparent;cursor:pointer;
  transition:transform .18s var(--ease),background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.btn-primary{background:var(--c-main);color:#fff;box-shadow:0 2px 8px rgba(31,107,82,.18)}
.btn-primary:hover{background:var(--c-main-600);color:#fff;transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;color:var(--c-main);border:1.5px solid var(--c-main)}
.btn-ghost:hover{background:rgba(31,107,82,.08);color:var(--c-main)}
.btn-sm{min-height:38px;padding:0 14px;font-size:14px}
.btn-block{width:100%}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(247,246,241,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--c-border);
  transition:box-shadow .22s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 6px 20px rgba(11,43,34,.08)}
.header-inner{display:flex;align-items:center;gap:22px;min-height:72px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:inherit}
.brand:hover{color:inherit}
.brand-mark{
  width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(140deg,#14483A,#1F6B52);box-shadow:var(--sh-1);
}
.brand-text strong{display:block;font-size:16px;font-weight:700;line-height:1.25}
.brand-text small{display:block;font-size:11px;color:var(--c-text-3);letter-spacing:.08em}
.main-nav{display:flex;align-items:center;gap:2px;margin-left:auto}
.main-nav a{
  position:relative;padding:8px 12px;font-size:15px;color:var(--c-text-2);border-radius:8px;
  transition:color .18s var(--ease),background .18s var(--ease);
}
.main-nav a:hover{color:var(--c-main);background:rgba(31,107,82,.07)}
.main-nav a.active{color:var(--c-main);font-weight:600}
.main-nav a.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:-1px;height:2px;border-radius:2px;background:var(--c-main);
}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--c-border);
  background:#fff;border-radius:10px;position:relative;cursor:pointer;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  position:absolute;left:12px;right:12px;height:2px;background:var(--c-main);border-radius:2px;
  transition:transform .2s var(--ease),opacity .2s var(--ease);
}
.nav-toggle span{top:21px}
.nav-toggle span::before{content:"";left:0;right:0;top:-7px}
.nav-toggle span::after{content:"";left:0;right:0;top:7px}

/* ---------- 移动抽屉 ---------- */
.mobile-drawer{
  position:fixed;inset:72px 0 0 0;z-index:75;background:var(--c-bg);
  padding:16px 20px 40px;overflow-y:auto;
}
.mobile-drawer[hidden]{display:none}
.mobile-drawer nav{display:flex;flex-direction:column}
.mobile-drawer nav a{
  display:flex;align-items:center;justify-content:space-between;
  height:56px;font-size:18px;color:var(--c-text);border-bottom:1px solid var(--c-line);
}
.mobile-drawer nav a.active{color:var(--c-main);font-weight:600}
.mobile-drawer .drawer-cta{margin-top:22px}

/* ---------- 面包屑 / 页头 ---------- */
.page-head{background:linear-gradient(180deg,#FFFFFF 0%,var(--c-bg) 100%);border-bottom:1px solid var(--c-line)}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--c-text-3);padding:20px 0}
.crumbs a{color:var(--c-main)}
.crumbs a:hover{text-decoration:underline}
.crumbs .sep{color:#C4CDC6}
.crumbs .cur{color:var(--c-text-2);max-width:56ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- 文章头部 ---------- */
.article-shell{padding:26px 0 72px}
.article-wrap{max-width:820px;margin:0 auto}
.article-head{
  background:#fff;border:1px solid var(--c-line);border-radius:18px;
  padding:34px 40px 30px;box-shadow:var(--sh-1);margin-bottom:26px;
}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;font-size:13px;font-weight:600;
  background:var(--c-bg-alt);color:var(--c-main);
}
.chip-outline{background:transparent;border:1px solid rgba(18,181,165,.55);color:#0E8E82}
.article-head h1{font-size:clamp(28px,4.2vw,44px);line-height:1.25;font-weight:700;margin:16px 0 18px}
.article-meta{display:flex;flex-wrap:wrap;gap:10px 20px;font-size:14px;color:var(--c-text-3)}
.article-meta span{display:inline-flex;align-items:center;gap:6px}
.article-meta i{width:6px;height:6px;border-radius:50%;background:var(--c-cyan);display:inline-block}

/* ---------- 正文 ---------- */
.article-main{
  background:#fff;border:1px solid var(--c-line);border-radius:18px;
  padding:38px 44px 44px;box-shadow:var(--sh-1);
}
.article-body{font-size:17px;line-height:1.95;color:#26332D}
.article-body p{margin:0 0 1.15em}
.article-body h2{
  font-size:clamp(20px,2.6vw,26px);line-height:1.4;font-weight:700;
  margin:1.9em 0 .7em;padding-left:14px;position:relative;color:var(--c-text);
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:4px;border-radius:2px;background:var(--c-main);
}
.article-body h3{font-size:19px;line-height:1.45;font-weight:600;margin:1.6em 0 .55em;color:var(--c-text)}
.article-body ul{list-style:disc;padding-left:1.35em;margin:0 0 1.15em}
.article-body ol{list-style:decimal;padding-left:1.45em;margin:0 0 1.15em}
.article-body li{margin:.4em 0}
.article-body blockquote{
  margin:1.5em 0;padding:16px 20px;background:var(--c-bg-alt);
  border-left:4px solid var(--c-main);border-radius:0 12px 12px 0;color:var(--c-text-2);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r-img);border:1px solid var(--c-border);margin:1.5em auto;height:auto}
.article-body figure{margin:1.5em 0}
.article-body figcaption{font-size:13.5px;color:var(--c-text-3);text-align:center;margin-top:.7em}
.article-body a{color:var(--c-main);border-bottom:1px solid rgba(31,107,82,.35)}
.article-body a:hover{border-bottom-color:var(--c-main)}
.article-body code{background:var(--c-bg-alt);padding:2px 6px;border-radius:6px;font-size:.92em}
.article-body pre{
  background:var(--c-deep);color:#E7F2ED;padding:16px 18px;border-radius:12px;
  overflow-x:auto;line-height:1.7;margin:1.5em 0;
}
.article-body pre code{background:none;color:inherit;padding:0}
.article-body table{width:100%;border-collapse:collapse;margin:1.5em 0;font-size:15.5px}
.article-body th,.article-body td{border:1px solid var(--c-border);padding:10px 12px;text-align:left}
.article-body th{background:var(--c-bg-alt);font-weight:600}
.article-body hr{border:none;border-top:1px solid var(--c-line);margin:2em 0}

.article-empty{text-align:center;padding:24px 0 8px}
.article-empty h2{font-size:24px;margin-bottom:12px}
.article-empty p{color:var(--c-text-2);margin-bottom:22px}

/* ---------- 标签行 ---------- */
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:30px}
.tag-row .tag-label{font-size:13.5px;color:var(--c-text-3)}
.tag{
  display:inline-flex;align-items:center;padding:5px 12px;border-radius:999px;
  font-size:13px;background:var(--c-bg-alt);color:var(--c-main);
  transition:background .18s var(--ease),transform .18s var(--ease);
}
.tag:hover{background:#E1E9DF;transform:translateY(-1px)}

/* ---------- CTA 横幅 ---------- */
.cta-band{
  margin-top:28px;background:var(--c-bg-alt);border:1px solid var(--c-border);
  border-radius:18px;padding:28px 30px;display:flex;flex-wrap:wrap;gap:18px;
  align-items:center;justify-content:space-between;
}
.cta-band h3{font-size:20px;font-weight:700;margin-bottom:6px}
.cta-band p{font-size:14.5px;color:var(--c-text-2);max-width:52ch}

/* ---------- 相关推荐 ---------- */
.rel-section{margin-top:44px}
.rel-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:18px}
.rel-head h2{font-size:clamp(20px,2.6vw,26px)}
.rel-head a{font-size:14px;color:var(--c-main)}
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.rel-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#D2DACF}
.rel-card .thumb{aspect-ratio:16/9;overflow:hidden;background:var(--c-bg-alt)}
.rel-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.rel-card:hover .thumb img{transform:scale(1.04)}
.rel-card .body{padding:16px 18px 20px;display:flex;flex-direction:column;gap:8px;flex:1}
.rel-card h3{font-size:17px;line-height:1.45;font-weight:600}
.rel-card:hover h3{color:var(--c-main)}
.rel-card p{font-size:14px;color:var(--c-text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-card .meta{font-size:13px;color:var(--c-text-3);margin-top:auto}

/* ---------- 上一篇 / 下一篇 ---------- */
.prevnext{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:26px}
.prevnext a{
  border:1px solid var(--c-line);background:#fff;border-radius:var(--r-card);
  padding:18px 20px;box-shadow:var(--sh-1);display:block;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.prevnext a:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#D2DACF}
.prevnext .k{font-size:13px;color:var(--c-text-3);display:block;margin-bottom:6px}
.prevnext .t{font-size:15.5px;font-weight:600;color:var(--c-text)}
.prevnext a:hover .t{color:var(--c-main)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-deep);color:#D6E2DC;margin-top:64px;padding:56px 0 26px;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px}
.footer-brand .brand{margin-bottom:14px}
.footer-brand .brand-text strong{color:#fff}
.footer-brand .brand-text small{color:#8FA79D}
.footer-brand p{color:#A9BDB4;line-height:1.8;max-width:44ch}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:14px}
.footer-col ul li{margin-bottom:10px}
.footer-col a{color:#A9BDB4;transition:color .18s var(--ease)}
.footer-col a:hover{color:var(--c-cyan)}
.footer-col span{color:#8FA79D}
.footer-bottom{
  margin-top:36px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;color:#8FA79D;font-size:13px;
}

/* ---------- 移动底部 Tab ---------- */
.mobile-tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:78;display:none;
  background:#fff;border-top:1px solid var(--c-border);
  padding-bottom:env(safe-area-inset-bottom);
}
.mobile-tabbar a{
  flex:1;position:relative;height:60px;display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:3px;font-size:10.5px;color:var(--c-text-3);
}
.mobile-tabbar a svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.mobile-tabbar a.active{color:var(--c-main)}
.mobile-tabbar a.active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:26px;height:2px;border-radius:2px;background:var(--c-main);
}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;right:22px;bottom:26px;z-index:70;width:46px;height:46px;border-radius:50%;
  border:1px solid var(--c-border);background:#fff;color:var(--c-main);cursor:pointer;
  display:none;align-items:center;justify-content:center;box-shadow:var(--sh-2);
}
.to-top.show{display:flex}

/* ---------- 表单弹层 ---------- */
.modal{position:fixed;inset:0;z-index:120;display:flex;align-items:center;justify-content:center}
.modal[hidden]{display:none}
.modal-mask{position:absolute;inset:0;background:rgba(11,43,34,.5);backdrop-filter:blur(2px)}
.modal-panel{
  position:relative;background:#fff;border-radius:18px;width:min(520px,92vw);
  max-height:88vh;overflow-y:auto;padding:30px 32px 32px;box-shadow:0 24px 60px rgba(11,43,34,.28);
  animation:pop .22s var(--ease);
}
@keyframes pop{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}
.modal-panel h3{font-size:21px;font-weight:700;margin-bottom:8px}
.modal-sub{font-size:14px;color:var(--c-text-2);margin-bottom:20px}
.modal-close{
  position:absolute;top:12px;right:12px;width:44px;height:44px;border-radius:10px;
  border:none;background:transparent;color:var(--c-text-3);font-size:24px;line-height:1;cursor:pointer;
}
.modal-close:hover{background:var(--c-bg-alt);color:var(--c-main)}
.modal-grip{display:none}
.field{margin-bottom:16px}
.field label{display:block;font-size:14px;font-weight:600;margin-bottom:7px}
.field input,.field textarea{
  width:100%;border:1px solid var(--c-border);border-radius:var(--r-btn);
  background:#fff;padding:11px 13px;font-size:15px;
  transition:border-color .18s var(--ease),background .18s var(--ease),box-shadow .18s var(--ease);
}
.field input{height:44px}
.field textarea{resize:vertical;min-height:82px;line-height:1.7}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--c-main);background:#F4F9F6;box-shadow:0 0 0 3px rgba(31,107,82,.12);
}
.field-error{margin:6px 0 0;font-size:13px;color:#C8452A;display:none}
.field-error.show{display:block}
.check{display:flex;align-items:flex-start;gap:9px;font-size:13.5px;color:var(--c-text-2);line-height:1.7;cursor:pointer}
.check input{width:18px;height:18px;margin-top:3px;accent-color:var(--c-main);flex:0 0 auto}
.form-done{margin-top:12px;font-size:14px;color:var(--c-main);background:var(--c-bg-alt);padding:12px 14px;border-radius:10px}
.form-done[hidden]{display:none}
body.modal-open{overflow:hidden}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .main-nav,.header-actions .btn{display:none}
  .nav-toggle{display:block}
  .mobile-tabbar{display:flex}
  body{padding-bottom:80px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .rel-grid{grid-template-columns:repeat(2,1fr)}
  .to-top{bottom:80px;right:16px}
  .article-shell{padding:20px 0 48px}
  .article-head{padding:26px 24px 24px}
  .article-main{padding:26px 22px 30px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .article-body{font-size:16px;line-height:1.95}
  .rel-grid{grid-template-columns:1fr;gap:16px}
  .prevnext{grid-template-columns:1fr}
  .cta-band{padding:22px 20px;flex-direction:column;align-items:flex-start}
  .cta-band .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .crumbs .cur{max-width:32ch}
  .modal{align-items:flex-end}
  .modal-panel{
    width:100%;max-width:100%;border-radius:20px 20px 0 0;max-height:90vh;
    padding:26px 20px calc(26px + env(safe-area-inset-bottom));
  }
  .modal-grip{
    display:block;width:44px;height:4px;border-radius:999px;background:#D7DED6;
    margin:0 auto 16px;
  }
}

/* roulang page: category2 */
:root{
  --green-900:#0B2B22;
  --green-800:#14483A;
  --green-700:#185A47;
  --green-600:#1F6B52;
  --green-500:#2A7F63;
  --green-050:#EDF1EA;
  --orange:#E8622A;
  --orange-dark:#CF5220;
  --cyan:#12B5A5;
  --bg:#F7F6F1;
  --white:#FFFFFF;
  --bg-alt:#EDF1EA;
  --text:#17201C;
  --text-2:#4A5750;
  --text-3:#7C8A83;
  --border:#DFE4DC;
  --line:#E8ECE6;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-1:0 1px 2px rgba(11,43,34,.06);
  --shadow-2:0 10px 26px rgba(11,43,34,.10);
  --container:1200px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --h-height:72px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:MiSans,"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:17px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--radius-img);}
a{color:var(--green-600);text-decoration:none;transition:color .18s var(--ease);}
a:hover{color:var(--green-500);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0 0 .6em;color:var(--text);letter-spacing:.2px;}
h1{font-size:clamp(28px,4.2vw,44px);line-height:1.25;font-weight:700;}
h2{font-size:clamp(22px,3vw,32px);line-height:1.3;font-weight:700;}
h3{font-size:20px;line-height:1.4;font-weight:600;}
p{margin:0 0 1em;}
ul,ol{margin:0 0 1em;padding-left:1.2em;}
li{margin-bottom:.4em;}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:6px;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}
.skip-link{
  position:absolute;left:-9999px;top:0;background:var(--green-600);color:#fff;
  padding:10px 16px;border-radius:0 0 10px 0;z-index:999;
}
.skip-link:focus{left:0;color:#fff;}

/* ============ Header ============ */
.site-header{
  position:sticky;top:0;z-index:120;
  background:rgba(247,246,241,.94);
  backdrop-filter:saturate(140%) blur(8px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 6px 20px rgba(11,43,34,.08);}
.header-inner{
  height:var(--h-height);
  display:flex;align-items:center;gap:24px;
}
.brand{
  display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--text);
}
.brand:hover{color:var(--text);}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:11px;
  background:linear-gradient(150deg,var(--green-800),var(--green-600));
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-1);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:17px;font-weight:700;letter-spacing:.3px;}
.brand-text small{font-size:11px;color:var(--text-3);letter-spacing:2px;}
.main-nav{
  display:flex;align-items:center;gap:26px;margin-left:auto;
}
.main-nav a{
  position:relative;font-size:15px;color:var(--text-2);padding:6px 0;
}
.main-nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;
  background:var(--green-600);transform:scaleX(0);transform-origin:left;
  transition:transform .22s var(--ease);border-radius:2px;
}
.main-nav a:hover{color:var(--green-600);}
.main-nav a:hover::after,.main-nav a.active::after{transform:scaleX(1);}
.main-nav a.active{color:var(--green-600);font-weight:600;}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--border);
  background:var(--white);border-radius:10px;cursor:pointer;
  align-items:center;justify-content:center;padding:0;
}
.nav-toggle span{
  display:block;width:18px;height:2px;background:var(--text);border-radius:2px;position:relative;
}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);border-radius:2px;
  transition:transform .2s var(--ease);
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ============ Buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15.5px;font-weight:600;cursor:pointer;border:1.5px solid transparent;
  transition:background .18s var(--ease),color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
  text-align:center;
}
.btn-sm{min-height:40px;padding:0 18px;font-size:14.5px;}
.btn-primary{background:var(--green-600);color:#fff;box-shadow:var(--shadow-1);}
.btn-primary:hover{background:var(--green-700);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-accent{background:var(--orange);color:#fff;}
.btn-accent:hover{background:var(--orange-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-ghost{background:transparent;color:var(--green-600);border-color:var(--green-600);}
.btn-ghost:hover{background:var(--green-050);color:var(--green-700);}
.btn-block{width:100%;}
.btn:active{transform:translateY(0);}

/* ============ Breadcrumb ============ */
.crumb-bar{background:var(--bg);border-bottom:1px solid var(--line);}
.breadcrumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  padding:16px 0;font-size:14px;color:var(--text-3);list-style:none;margin:0;
}
.breadcrumbs li{display:flex;align-items:center;gap:8px;margin:0;}
.breadcrumbs li+li::before{content:"/";color:var(--border);}
.breadcrumbs a{color:var(--green-600);}
.breadcrumbs .current{color:var(--text-2);}

/* ============ Hero ============ */
.cat-hero{
  position:relative;
  background:var(--green-900);
  color:#fff;
  overflow:hidden;
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(115deg,rgba(11,43,34,.94) 0%,rgba(11,43,34,.78) 46%,rgba(20,72,58,.62) 100%),url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center;
  opacity:.96;
}
.cat-hero::after{
  content:"";position:absolute;right:-80px;top:-60px;width:420px;height:420px;border-radius:50%;
  border:1px dashed rgba(143,214,194,.28);
}
.dark .hero-inner,.cat-hero .hero-inner{
  position:relative;z-index:2;
  display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);
  gap:56px;align-items:center;
  padding:76px 0 72px;
}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  background:rgba(18,181,165,.16);
  border:1px solid rgba(18,181,165,.45);
  color:#8FD6C2;font-size:13px;letter-spacing:.6px;margin-bottom:18px;
}
.cat-hero h1{color:#fff;}
.cat-hero h1 em{font-style:normal;color:#FFD8C6;}
.hero-sub{
  font-size:17px;line-height:1.8;color:rgba(255,255,255,.82);
  max-width:520px;margin-bottom:26px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}
.cat-hero .btn-ghost{color:#fff;border-color:rgba(255,255,255,.5);}
.cat-hero .btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff;}
.hero-aside{
  background:rgba(255,255,255,.07);
  border:1px solid rgba(255,255,255,.16);
  border-radius:var(--radius-card);
  padding:24px;
  backdrop-filter:blur(4px);
}
.hero-aside h2{font-size:16px;color:#8FD6C2;letter-spacing:1px;margin-bottom:14px;font-weight:600;}
.hero-aside ul{list-style:none;padding:0;margin:0;}
.hero-aside li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:15px;color:rgba(255,255,255,.86);margin-bottom:12px;line-height:1.65;
}
.hero-aside li:last-child{margin-bottom:0;}
.hero-aside .dot{
  flex:0 0 8px;width:8px;height:8px;border-radius:50%;background:var(--orange);margin-top:9px;
}

/* ============ Sections ============ */
.section{padding:88px 0;}
.section-alt{background:var(--bg-alt);}
.section-white{background:var(--white);}
.section-dark{background:var(--green-900);color:#fff;}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head p{color:var(--text-2);font-size:16.5px;margin-bottom:0;}
.section-dark .section-head p{color:rgba(255,255,255,.75);}
.section-tag{
  display:inline-block;padding:5px 13px;border-radius:999px;
  background:var(--green-050);color:var(--green-600);
  font-size:13px;font-weight:600;letter-spacing:.5px;margin-bottom:14px;
}
.section-dark .section-tag{background:rgba(18,181,165,.18);color:#8FD6C2;}

/* ============ Timeline layout ============ */
.timeline-layout{
  display:grid;grid-template-columns:minmax(0,1.55fr) minmax(0,1fr);
  gap:48px;align-items:start;
}
.timeline{position:relative;padding-left:56px;}
.timeline::before{
  content:"";position:absolute;left:19px;top:12px;bottom:12px;width:2px;
  background:linear-gradient(180deg,var(--green-600),rgba(31,107,82,.18));
  border-radius:2px;
}
.tl-item{position:relative;padding-bottom:38px;}
.tl-item:last-child{padding-bottom:0;}
.tl-num{
  position:absolute;left:-56px;top:0;
  width:40px;height:40px;border-radius:50%;
  background:var(--white);border:2px solid var(--green-600);
  color:var(--green-600);font-weight:700;font-size:16px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 0 0 6px rgba(237,241,234,.9);
}
.tl-item h3{margin-bottom:8px;}
.tl-item p{color:var(--text-2);font-size:16px;margin-bottom:12px;}
.tl-meta{display:flex;flex-wrap:wrap;gap:8px;}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;font-size:13px;
  background:var(--green-050);color:var(--green-600);border:1px solid #DCE7DE;
}
.chip-cyan{background:rgba(18,181,165,.10);color:#0E8E82;border-color:rgba(18,181,165,.35);}
.chip-orange{background:rgba(232,98,42,.10);color:#C24D1D;border-color:rgba(232,98,42,.30);}

/* ============ Sticky card ============ */
.sticky-card{
  position:sticky;top:calc(var(--h-height) + 24px);
  background:var(--white);border:1px solid var(--border);
  border-radius:var(--radius-card);box-shadow:var(--shadow-1);
  overflow:hidden;
}
.sticky-card-head{
  background:linear-gradient(140deg,var(--green-800),var(--green-600));
  color:#fff;padding:20px 22px;
}
.sticky-card-head h3{color:#fff;margin:0;font-size:18px;}
.sticky-card-head span{display:block;font-size:13px;color:rgba(255,255,255,.7);margin-top:4px;}
.sticky-list{list-style:none;margin:0;padding:8px 22px 4px;}
.sticky-list li{
  display:flex;justify-content:space-between;gap:12px;
  padding:14px 0;border-bottom:1px solid var(--line);font-size:15px;
}
.sticky-list li:last-child{border-bottom:none;}
.sticky-list .k{color:var(--text-3);}
.sticky-list .v{color:var(--text);font-weight:600;text-align:right;}
.sticky-note{
  margin:14px 22px 0;padding:14px 16px;border-radius:12px;
  background:var(--green-050);color:var(--text-2);font-size:14px;line-height:1.75;
}
.sticky-foot{padding:18px 22px 22px;}
.sticky-figure{margin:0;border-top:1px solid var(--line);}
.sticky-figure img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:0;}

/* ============ Cards ============ */
.card-grid{display:grid;gap:24px;}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr));}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr));}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr));}
.info-card{
  background:var(--white);border:1px solid var(--border);border-radius:var(--radius-card);
  padding:26px 24px;box-shadow:var(--shadow-1);
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.info-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#CFDACF;}
.info-card .ico{
  width:44px;height:44px;border-radius:12px;background:var(--green-050);
  display:flex;align-items:center;justify-content:center;margin-bottom:16px;
}
.info-card h3{font-size:18px;margin-bottom:8px;}
.info-card p{font-size:15.2px;color:var(--text-2);margin-bottom:0;}
.info-card:hover h3{color:var(--green-600);}

/* ============ Checklist band ============ */
.check-band{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:48px;align-items:center;
}
.check-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;border:1px solid var(--border);}
.check-list{list-style:none;padding:0;margin:0;}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;
  padding:14px 0;border-bottom:1px dashed var(--border);
}
.check-list li:last-child{border-bottom:none;}
.check-list .mark{
  flex:0 0 24px;width:24px;height:24px;border-radius:50%;
  background:var(--green-050);color:var(--green-600);
  display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;margin-top:5px;
}
.check-list strong{display:block;font-size:16px;margin-bottom:2px;}
.check-list span{font-size:15px;color:var(--text-2);}

/* ============ Data strip ============ */
.data-strip{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  gap:0;
}
.data-cell{padding:28px 24px;text-align:center;position:relative;}
.data-cell+.data-cell::before{
  content:"";position:absolute;left:0;top:26%;bottom:26%;width:1px;background:rgba(255,255,255,.16);
}
.data-num{
  font-size:clamp(30px,3.4vw,42px);font-weight:700;color:#fff;line-height:1.1;
  font-variant-numeric:tabular-nums;
}
.data-num em{font-style:normal;font-size:16px;font-weight:600;color:#8FD6C2;margin-left:4px;}
.data-label{font-size:14px;color:rgba(255,255,255,.68);margin-top:8px;}

/* ============ FAQ ============ */
.faq-list{display:grid;gap:12px;max-width:900px;}
.faq-item{
  background:var(--bg-alt);border:1px solid var(--border);border-radius:var(--radius-card);
  overflow:hidden;transition:border-color .18s var(--ease),background .18s var(--ease);
}
.faq-item.is-open{background:var(--white);border-color:#CFDACF;}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:none;border:none;cursor:pointer;text-align:left;
  padding:18px 22px;font-size:17px;font-weight:600;color:var(--text);line-height:1.6;
}
.faq-q:hover{color:var(--green-600);}
.faq-arrow{
  flex:0 0 22px;width:22px;height:22px;display:flex;align-items:center;justify-content:center;
  transition:transform .24s var(--ease);color:var(--green-600);
}
.faq-item.is-open .faq-arrow{transform:rotate(180deg);}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .28s var(--ease);
}
.faq-a-inner{padding:0 22px 20px;font-size:15px;line-height:1.8;color:var(--text-2);}

/* ============ CTA band ============ */
.cta-band{
  background:var(--green-050);border:1px solid #D8E3DA;border-radius:var(--radius-card);
  padding:44px;display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);
  gap:32px;align-items:center;
}
.cta-band h2{margin-bottom:10px;}
.cta-band p{color:var(--text-2);margin-bottom:0;font-size:16px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end;}

/* ============ Related ============ */
.related-card{
  display:flex;flex-direction:column;background:var(--white);
  border:1px solid var(--border);border-radius:var(--radius-card);overflow:hidden;
  box-shadow:var(--shadow-1);transition:transform .18s var(--ease),box-shadow .18s var(--ease);
  color:var(--text);
}
.related-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);color:var(--text);}
.related-card img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:0;}
.related-body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.related-body h3{font-size:17.5px;margin:0;}
.related-card:hover h3{color:var(--green-600);}
.related-body p{font-size:14.6px;color:var(--text-2);margin:0;}
.related-more{margin-top:auto;font-size:14px;color:var(--green-600);font-weight:600;}

/* ============ Footer ============ */
.site-footer{background:var(--green-900);color:rgba(255,255,255,.78);padding:64px 0 28px;margin-top:0;}
.footer-grid{
  display:grid;grid-template-columns:minmax(0,1.5fr) repeat(3,minmax(0,1fr));
  gap:40px;padding-bottom:36px;border-bottom:1px solid rgba(255,255,255,.12);
}
.footer-brand .brand{color:#fff;margin-bottom:16px;}
.footer-brand .brand-text strong{color:#fff;}
.footer-brand .brand-text small{color:rgba(255,255,255,.55);}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.66);margin:0;max-width:340px;}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:16px;letter-spacing:.5px;}
.site-footer ul{list-style:none;margin:0;padding:0;}
.site-footer li{margin-bottom:11px;font-size:14px;}
.site-footer a{color:rgba(255,255,255,.78);font-size:14px;}
.site-footer a:hover{color:var(--cyan);}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  padding-top:22px;font-size:13.5px;color:rgba(255,255,255,.55);
}

/* ============ Modal ============ */
.modal-overlay{
  position:fixed;inset:0;z-index:300;background:rgba(11,43,34,.55);
  display:none;align-items:center;justify-content:center;padding:24px;
  backdrop-filter:blur(3px);
}
.modal-overlay.is-open{display:flex;}
.modal-box{
  width:100%;max-width:540px;background:var(--white);border-radius:var(--radius-card);
  box-shadow:0 24px 60px rgba(11,43,34,.28);position:relative;
  max-height:90vh;overflow:auto;
  animation:pop .22s var(--ease);
}
@keyframes pop{from{opacity:0;transform:translateY(12px);}to{opacity:1;transform:translateY(0);}}
.modal-head{padding:26px 28px 6px;display:flex;justify-content:space-between;gap:16px;align-items:flex-start;}
.modal-head h3{font-size:21px;margin-bottom:6px;}
.modal-head p{font-size:14.5px;color:var(--text-3);margin:0;}
.modal-close{
  flex:0 0 44px;width:44px;height:44px;border-radius:10px;border:1px solid var(--border);
  background:var(--white);cursor:pointer;color:var(--text-2);font-size:20px;line-height:1;
  display:flex;align-items:center;justify-content:center;transition:background .18s var(--ease);
}
.modal-close:hover{background:var(--bg-alt);}
.modal-body{padding:18px 28px 28px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:14px;font-weight:600;margin-bottom:7px;color:var(--text-2);}
.field input,.field textarea{
  width:100%;min-height:44px;padding:11px 14px;border-radius:var(--radius-btn);
  border:1.5px solid var(--border);background:var(--white);font-size:15px;color:var(--text);
  font-family:inherit;transition:border-color .18s var(--ease),background .18s var(--ease);
}
.field textarea{min-height:92px;resize:vertical;line-height:1.7;}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--green-600);background:#F5FAF7;
}
.field .err{display:none;font-size:13px;color:var(--orange-dark);margin-top:6px;}
.field.has-err input,.field.has-err textarea{border-color:var(--orange);}
.field.has-err .err{display:block;}
.consent{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--text-2);margin-bottom:18px;}
.consent input{width:18px;height:18px;margin-top:4px;accent-color:var(--green-600);}
.form-tip{font-size:13px;color:var(--text-3);margin:12px 0 0;text-align:center;}
.form-success{
  display:none;padding:22px;border-radius:12px;background:var(--green-050);
  color:var(--green-700);font-size:15px;text-align:center;
}
.form-success.is-open{display:block;}

/* ============ Mobile tabbar ============ */
.mobile-tabbar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:200;
  background:var(--white);border-top:1px solid var(--line);
  height:calc(60px + env(safe-area-inset-bottom));
  padding-bottom:env(safe-area-inset-bottom);
}
.mobile-tabbar a{
  flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  font-size:10.5px;color:var(--text-3);position:relative;padding-top:6px;
}
.mobile-tabbar a svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
.mobile-tabbar a.active{color:var(--green-600);}
.mobile-tabbar a.active::before{
  content:"";position:absolute;top:0;left:22%;right:22%;height:2px;border-radius:2px;background:var(--green-600);
}

/* ============ Back to top ============ */
.back-top{
  position:fixed;right:24px;bottom:30px;width:46px;height:46px;border-radius:50%;
  background:var(--white);border:1px solid var(--border);box-shadow:var(--shadow-2);
  display:flex;align-items:center;justify-content:center;color:var(--green-600);
  cursor:pointer;opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s;
  z-index:190;
}
.back-top.is-show{opacity:1;visibility:visible;transform:translateY(0);}

/* ============ Responsive ============ */
@media (max-width:1023px){
  .main-nav{display:none;}
  .nav-toggle{display:flex;}
  .mobile-tabbar{display:flex;}
  body{padding-bottom:84px;}
  .hero-inner{grid-template-columns:1fr;gap:34px;padding:56px 0 54px;}
  .timeline-layout{grid-template-columns:1fr;gap:34px;}
  .sticky-card{position:static;}
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr));}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr));}
  .check-band{grid-template-columns:1fr;gap:32px;}
  .data-strip{grid-template-columns:repeat(2,minmax(0,1fr));}
  .data-cell:nth-child(3)::before{display:none;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:30px;}
  .cta-band{grid-template-columns:1fr;padding:34px;}
  .cta-actions{justify-content:flex-start;}
  .section{padding:64px 0;}
  .back-top{bottom:88px;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .container{padding:0 20px;}
  .header-inner{gap:12px;}
  .btn-sm{display:none;}
  .header-actions{gap:8px;}
  .hero-inner{padding:44px 0 46px;}
  .hero-actions .btn{width:100%;}
  .section{padding:48px 0;}
  .grid-4,.grid-3,.grid-2{grid-template-columns:1fr;}
  .data-strip{grid-template-columns:1fr;}
  .data-cell+.data-cell::before{display:none;}
  .data-cell{border-top:1px solid rgba(255,255,255,.14);}
  .data-cell:first-child{border-top:none;}
  .timeline{padding-left:44px;}
  .timeline::before{left:15px;}
  .tl-num{left:-44px;width:32px;height:32px;font-size:14px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .cta-band{padding:26px;}
  .cta-actions .btn{width:100%;}
  .modal-overlay{padding:0;align-items:flex-end;}
  .modal-box{border-radius:20px 20px 0 0;max-width:100%;max-height:88vh;}
  .back-top{right:16px;bottom:82px;}
}

/* ============ Mobile drawer ============ */
.drawer{
  position:fixed;inset:0;z-index:250;background:var(--bg);
  transform:translateX(100%);transition:transform .26s var(--ease);
  display:flex;flex-direction:column;padding:20px;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px;}
.drawer-close{
  width:44px;height:44px;border-radius:10px;border:1px solid var(--border);
  background:var(--white);font-size:20px;color:var(--text-2);cursor:pointer;
  display:flex;align-items:center;justify-content:center;
}
.drawer nav{display:flex;flex-direction:column;}
.drawer nav a{
  font-size:18px;line-height:56px;color:var(--text);border-bottom:1px solid var(--line);
}
.drawer nav a.active{color:var(--green-600);font-weight:600;}
.drawer-foot{margin-top:auto;padding-top:20px;}
@media (min-width:1024px){.drawer{display:none;}}

/* roulang page: category1 */
:root{
  --brand:#1F6B52;
  --brand-800:#14483A;
  --brand-900:#0B2B22;
  --accent:#E8622A;
  --cyan:#12B5A5;
  --bg:#F7F6F1;
  --surface:#FFFFFF;
  --alt:#EDF1EA;
  --text:#17201C;
  --text-2:#4A5750;
  --text-3:#7C8A83;
  --border:#DFE4DC;
  --divider:#E8ECE6;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-1:0 1px 2px rgba(11,43,34,.06);
  --shadow-2:0 10px 26px rgba(11,43,34,.10);
  --ease:cubic-bezier(.2,.7,.3,1);
  --sp-1:8px;--sp-2:16px;--sp-3:24px;--sp-4:32px;--sp-5:48px;--sp-6:64px;--sp-7:88px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:MiSans,"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:17px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding-left:1.2em}
a{color:var(--brand);text-decoration:none;transition:color .18s var(--ease)}
a:hover{color:var(--brand-800)}
img{max-width:100%;display:block;border:1px solid var(--border);border-radius:var(--radius-img);object-fit:cover}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
input,textarea{font:inherit}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:4px}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--brand);color:#fff;padding:10px 16px;z-index:200;border-radius:0 0 8px 0}
.skip-link:focus{left:0}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section--alt{background:var(--alt)}
.section--white{background:var(--surface)}
.section--dark{background:var(--brand-900);color:#EDF1EA}
.section-head{max-width:760px;margin-bottom:40px}
.section-head h2{font-size:clamp(22px,3vw,32px);line-height:1.3;font-weight:700;letter-spacing:.2px}
.section-head p{margin-top:12px;color:var(--text-2);font-size:17px}
.eyebrow{display:inline-block;font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--brand);background:rgba(31,107,82,.08);border-radius:999px;padding:5px 12px;margin-bottom:14px}
.section--dark .eyebrow{color:#8FD6C2;background:rgba(143,214,194,.12)}

/* header */
.site-header{position:sticky;top:0;z-index:80;background:rgba(247,246,241,.94);backdrop-filter:blur(10px);border-bottom:1px solid var(--divider);transition:box-shadow .2s var(--ease)}
.site-header.is-scrolled{box-shadow:0 6px 18px rgba(11,43,34,.08)}
.header-inner{display:flex;align-items:center;gap:20px;height:72px}
.brand{display:flex;align-items:center;gap:10px;color:var(--text)}
.brand:hover{color:var(--text)}
.brand-mark{width:40px;height:40px;flex:0 0 40px;border-radius:12px;background:linear-gradient(135deg,#14483A,#1F6B52);display:grid;place-items:center;box-shadow:var(--shadow-1)}
.brand-text strong{display:block;font-size:16px;line-height:1.25;font-weight:700}
.brand-text small{display:block;font-size:12px;color:var(--text-3);line-height:1.3}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.main-nav a{position:relative;padding:9px 13px;border-radius:9px;font-size:15px;color:var(--text-2)}
.main-nav a:hover{color:var(--brand);background:rgba(31,107,82,.07)}
.main-nav a.active{color:var(--brand);font-weight:600}
.main-nav a.active::after{content:"";position:absolute;left:13px;right:13px;bottom:1px;height:2px;border-radius:2px;background:var(--brand)}
.header-actions{display:flex;align-items:center;gap:10px}
.nav-toggle{display:none;width:44px;height:44px;border-radius:10px;align-items:center;justify-content:center}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{display:block;width:20px;height:2px;border-radius:2px;background:var(--text);content:"";position:relative;transition:transform .2s var(--ease)}
.nav-toggle span::before{position:absolute;top:-6px}
.nav-toggle span::after{position:absolute;top:6px}
.nav-toggle[aria-expanded="true"] span{background:transparent}
.nav-toggle[aria-expanded="true"] span::before{transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span::after{transform:translateY(-6px) rotate(-45deg)}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:11px 22px;border-radius:var(--radius-btn);font-size:15px;font-weight:600;transition:transform .18s var(--ease),background .18s var(--ease),box-shadow .18s var(--ease),color .18s var(--ease);white-space:nowrap}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--shadow-1)}
.btn-primary:hover{background:#1A5B45;color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:#D2561F;color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-ghost{background:transparent;color:var(--brand);border:1.5px solid var(--brand)}
.btn-ghost:hover{background:rgba(31,107,82,.08);color:var(--brand-800);transform:translateY(-1px)}
.btn-light{background:#fff;color:var(--brand-900)}
.btn-light:hover{background:#F0F5F2;color:var(--brand-900);transform:translateY(-1px)}
.btn-sm{min-height:40px;padding:8px 16px;font-size:14px}
.btn-block{width:100%}

/* drawer */
.mobile-drawer{position:fixed;inset:72px 0 0 0;background:var(--bg);z-index:79;transform:translateY(-8px);opacity:0;visibility:hidden;transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s;overflow-y:auto;padding:12px 0 40px}
.mobile-drawer.is-open{opacity:1;visibility:visible;transform:translateY(0)}
.mobile-drawer a{display:block;font-size:18px;line-height:56px;padding:0 24px;color:var(--text);border-bottom:1px solid var(--divider)}
.mobile-drawer a.active{color:var(--brand);font-weight:600;background:rgba(31,107,82,.05)}
.mobile-drawer .btn{margin:20px 24px 0;display:flex}

/* breadcrumb */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--text-3);padding:20px 0 0}
.breadcrumb a{color:var(--brand)}
.breadcrumb span.sep{color:var(--border)}

/* hero */
.cat-hero{position:relative;padding:56px 0 72px;background:var(--bg);overflow:hidden}
.cat-hero::before{content:"";position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.webp');background-size:cover;background-position:center;opacity:.10}
.cat-hero::after{content:"";position:absolute;left:-120px;top:-140px;width:420px;height:420px;border-radius:50%;border:1px dashed rgba(31,107,82,.22);pointer-events:none}
.cat-hero .container{position:relative;z-index:1}
.hero-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.15fr);gap:56px;align-items:center;margin-top:24px}
.hero-media img{width:100%;aspect-ratio:16/10;border-radius:16px;box-shadow:var(--shadow-2)}
.hero-media figcaption{margin-top:12px;font-size:13px;color:var(--text-3)}
.hero-copy h1{font-size:clamp(28px,4.2vw,44px);line-height:1.25;font-weight:700;letter-spacing:.2px}
.hero-copy h1 em{font-style:normal;color:var(--brand)}
.hero-copy .lede{margin-top:18px;font-size:18px;color:var(--text-2);max-width:56ch}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.trust-row{display:flex;flex-wrap:wrap;gap:12px 26px;margin-top:32px;padding-top:22px;border-top:1px solid var(--border)}
.trust-row li{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-2);list-style:none}
.trust-row svg{flex:0 0 18px;color:var(--brand)}

/* points list */
.points-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.point-item{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-card);padding:22px 22px 22px 26px;position:relative;box-shadow:var(--shadow-1);transition:transform .18s var(--ease),box-shadow .18s var(--ease)}
.point-item::before{content:"";position:absolute;left:0;top:18px;bottom:18px;width:4px;border-radius:4px;background:var(--brand)}
.point-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}
.point-item .idx{font-size:13px;font-weight:700;color:var(--accent);letter-spacing:.08em;font-variant-numeric:tabular-nums}
.point-item h3{font-size:19px;font-weight:600;margin:6px 0 8px}
.point-item p{font-size:15.5px;color:var(--text-2)}

/* compare cards */
.compare-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.simple-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-card);padding:26px;box-shadow:var(--shadow-1);transition:transform .18s var(--ease),box-shadow .18s var(--ease)}
.simple-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}
.simple-card .tag{display:inline-block;font-size:13px;font-weight:600;color:var(--brand);background:rgba(31,107,82,.08);border-radius:999px;padding:4px 11px;margin-bottom:14px}
.simple-card h3{font-size:20px;font-weight:600;margin-bottom:10px}
.simple-card p{font-size:15.5px;color:var(--text-2)}
.simple-card ul{margin-top:14px;font-size:15px;color:var(--text-2);display:grid;gap:8px;padding-left:0;list-style:none}
.simple-card ul li{position:relative;padding-left:18px}
.simple-card ul li::before{content:"";position:absolute;left:0;top:.72em;width:7px;height:7px;border-radius:2px;background:var(--cyan)}

/* steps */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;counter-reset:step}
.step{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-card);padding:24px;box-shadow:var(--shadow-1);position:relative}
.step .num{width:38px;height:38px;border-radius:50%;background:var(--brand-900);color:#fff;display:grid;place-items:center;font-weight:700;font-variant-numeric:tabular-nums;margin-bottom:14px}
.step h3{font-size:18px;font-weight:600;margin-bottom:8px}
.step p{font-size:15px;color:var(--text-2)}

/* faq */
.faq-list{display:grid;gap:12px;max-width:900px}
.faq-item{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-card);overflow:hidden}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 22px;text-align:left;font-size:17px;font-weight:600;color:var(--text)}
.faq-q .chev{flex:0 0 20px;transition:transform .2s var(--ease);color:var(--brand)}
.faq-item.is-open .chev{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s var(--ease)}
.faq-a p{padding:0 22px 20px;font-size:15px;line-height:1.8;color:var(--text-2)}

/* cta band */
.cta-band{background:var(--brand-800);color:#EDF1EA;border-radius:18px;padding:48px;display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,.9fr);gap:32px;align-items:center;position:relative;overflow:hidden}
.cta-band::after{content:"";position:absolute;right:-70px;bottom:-90px;width:280px;height:280px;border-radius:50%;border:1px dashed rgba(143,214,194,.35)}
.cta-band h2{color:#fff;font-size:clamp(22px,3vw,30px);line-height:1.35}
.cta-band p{margin-top:12px;color:rgba(237,241,234,.82);font-size:16px}
.cta-band .actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
.cta-band .side{display:grid;gap:10px;font-size:14.5px;color:rgba(237,241,234,.85)}
.cta-band .side span{display:flex;gap:8px;align-items:flex-start}

/* related */
.related-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}
.related-card{display:block;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1);transition:transform .18s var(--ease),box-shadow .18s var(--ease);color:var(--text)}
.related-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);color:var(--text)}
.related-card img{width:100%;aspect-ratio:16/9;border:0;border-radius:0;border-bottom:1px solid var(--border)}
.related-card .body{padding:18px}
.related-card h3{font-size:17px;font-weight:600;margin-bottom:8px;transition:color .18s var(--ease)}
.related-card:hover h3{color:var(--brand)}
.related-card p{font-size:14.5px;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.related-card .more{display:inline-flex;align-items:center;gap:6px;margin-top:12px;font-size:14px;font-weight:600;color:var(--brand)}

/* modal */
.modal-mask{position:fixed;inset:0;background:rgba(11,43,34,.55);z-index:120;display:flex;align-items:center;justify-content:center;padding:20px;opacity:0;visibility:hidden;transition:opacity .2s var(--ease),visibility .2s}
.modal-mask.is-open{opacity:1;visibility:visible}
.modal-panel{width:100%;max-width:540px;background:#fff;border-radius:16px;padding:28px;box-shadow:0 24px 60px rgba(11,43,34,.28);transform:translateY(10px);transition:transform .2s var(--ease);max-height:92vh;overflow-y:auto}
.modal-mask.is-open .modal-panel{transform:translateY(0)}
.modal-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-bottom:6px}
.modal-head h2{font-size:21px;font-weight:700}
.modal-head p{font-size:14px;color:var(--text-3);margin-top:6px}
.modal-close{width:44px;height:44px;border-radius:10px;display:grid;place-items:center;color:var(--text-2);flex:0 0 44px}
.modal-close:hover{background:var(--alt)}
.field{margin-top:16px}
.field label{display:block;font-size:14px;font-weight:600;margin-bottom:8px}
.field input,.field textarea{width:100%;height:44px;padding:10px 14px;border:1px solid var(--border);border-radius:10px;background:#fff;color:var(--text);transition:border-color .18s var(--ease),background .18s var(--ease)}
.field textarea{height:92px;resize:vertical;line-height:1.7}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--brand);background:#F4F9F6}
.field .err{display:none;margin-top:6px;font-size:13px;color:#C8451A}
.field.has-error input,.field.has-error textarea{border-color:#C8451A}
.field.has-error .err{display:block}
.check-row{display:flex;gap:10px;align-items:flex-start;margin-top:18px;font-size:14px;color:var(--text-2)}
.check-row input{width:18px;height:18px;margin-top:4px;flex:0 0 18px;accent-color:var(--brand)}
.form-note{margin-top:12px;font-size:13px;color:var(--text-3)}
.form-state{margin-top:14px;font-size:14px;border-radius:10px;padding:12px 14px;display:none}
.form-state.ok{display:block;background:rgba(31,107,82,.08);color:var(--brand-800)}
.form-state.loading{display:block;background:var(--alt);color:var(--text-2)}

/* back to top */
.to-top{position:fixed;right:22px;bottom:22px;width:46px;height:46px;border-radius:50%;background:var(--brand);color:#fff;display:grid;place-items:center;box-shadow:var(--shadow-2);opacity:0;visibility:hidden;transition:opacity .2s var(--ease),visibility .2s;z-index:70}
.to-top.is-show{opacity:1;visibility:visible}

/* footer */
.site-footer{background:var(--brand-900);color:#D9E4DE;padding:64px 0 32px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand .brand-text strong{color:#fff}
.footer-brand .brand-text small{color:rgba(217,228,222,.62)}
.footer-brand p{font-size:14px;line-height:1.9;color:rgba(217,228,222,.78);max-width:42ch}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px;font-weight:600}
.footer-col ul{list-style:none;padding:0;display:grid;gap:12px}
.footer-col a,.footer-col span{font-size:14px;color:rgba(217,228,222,.8)}
.footer-col a:hover{color:var(--cyan)}
.footer-bottom{margin-top:44px;padding-top:22px;border-top:1px solid rgba(217,228,222,.16);display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;font-size:13.5px;color:rgba(217,228,222,.68)}

/* mobile tabbar */
.mobile-tabbar{display:none;position:fixed;left:0;right:0;bottom:0;height:60px;padding-bottom:env(safe-area-inset-bottom);background:#fff;border-top:1px solid var(--divider);z-index:90}
.mobile-tabbar .tab-inner{display:grid;grid-template-columns:repeat(5,1fr);height:60px}
.tab-item{position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;font-size:10.5px;color:var(--text-3)}
.tab-item svg{width:22px;height:22px}
.tab-item.is-active{color:var(--brand);font-weight:600}
.tab-item.is-active::before{content:"";position:absolute;top:0;left:22%;right:22%;height:2px;border-radius:2px;background:var(--brand)}

@media (max-width:1023px){
  .main-nav{display:none}
  .nav-toggle{display:flex}
  .header-actions .btn{display:none}
  .mobile-tabbar{display:block}
  body{padding-bottom:80px}
  .hero-grid{grid-template-columns:minmax(0,1fr);gap:32px}
  .hero-media{order:-1}
  .compare-grid,.steps,.related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-band{grid-template-columns:minmax(0,1fr);padding:36px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .section{padding:64px 0}
  .to-top{bottom:84px}
}
@media (max-width:767px){
  body{font-size:16px}
  .container{padding:0 20px}
  .points-grid,.compare-grid,.steps,.related-grid,.footer-grid{grid-template-columns:minmax(0,1fr)}
  .section{padding:48px 0}
  .cat-hero{padding:32px 0 48px}
  .cta-band{padding:28px 22px}
  .modal-mask{align-items:flex-end;padding:0}
  .modal-panel{max-width:100%;border-radius:20px 20px 0 0;padding:22px 20px 28px}
  .footer-bottom{flex-direction:column}
}

/* roulang page: category3 */
:root{
  --brand:#1F6B52;
  --brand-dark:#175843;
  --brand-800:#14483A;
  --brand-900:#0B2B22;
  --accent:#E8622A;
  --accent-dark:#D3551F;
  --cyan:#12B5A5;
  --bg:#F7F6F1;
  --bg-alt:#EDF1EA;
  --white:#FFFFFF;
  --text:#17201C;
  --text-2:#4A5750;
  --text-3:#7C8A83;
  --border:#DFE4DC;
  --line:#E8ECE6;
  --radius:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-1:0 1px 2px rgba(11,43,34,.06);
  --shadow-2:0 10px 26px rgba(11,43,34,.10);
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:MiSans,"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif !important;
  font-size:17px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  font-weight:400;
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .18s var(--ease);}
a:hover{color:var(--accent);}
button{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:4px;}
h1{font-size:clamp(28px,4.2vw,44px);line-height:1.25;font-weight:700;letter-spacing:-.5px;}
h2{font-size:clamp(22px,3vw,32px);line-height:1.3;font-weight:700;}
h3{font-size:20px;line-height:1.4;font-weight:600;}
p{color:var(--text-2);}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--brand);color:#fff;padding:10px 16px;border-radius:0 0 8px 0;z-index:200;}
.skip-link:focus{left:0;color:#fff;}
.tnum{font-variant-numeric:tabular-nums;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:90;
  background:rgba(247,246,241,.94);
  backdrop-filter:saturate(160%) blur(8px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 6px 20px rgba(11,43,34,.08);}
.header-inner{display:flex;align-items:center;gap:20px;height:72px;}
.brand{display:flex;align-items:center;gap:10px;color:var(--text);flex:0 0 auto;}
.brand:hover{color:var(--text);}
.brand-mark{
  width:38px;height:38px;border-radius:11px;flex:0 0 auto;
  background:linear-gradient(145deg,var(--brand-800),var(--brand));
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-1);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:16.5px;font-weight:700;letter-spacing:-.2px;}
.brand-text small{font-size:11.5px;color:var(--text-3);letter-spacing:1.5px;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto;flex-wrap:nowrap;}
.main-nav a{
  position:relative;
  padding:9px 13px;font-size:15px;color:var(--text-2);
  border-radius:8px;white-space:nowrap;transition:color .18s var(--ease),background .18s var(--ease);
}
.main-nav a:hover{color:var(--brand);background:rgba(31,107,82,.06);}
.main-nav a.active{color:var(--brand);font-weight:600;}
.main-nav a.active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:2px;height:2px;
  background:var(--brand);border-radius:2px;
}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--border);background:var(--white);
  border-radius:11px;cursor:pointer;position:relative;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  position:absolute;left:50%;transform:translateX(-50%);
  width:18px;height:2px;background:var(--text);border-radius:2px;content:"";transition:.2s var(--ease);
}
.nav-toggle span{top:50%;margin-top:-1px;}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.nav-toggle[aria-expanded="true"] span{background:transparent;}
.nav-toggle[aria-expanded="true"] span::before{top:0;transform:translateX(-50%) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span::after{top:0;transform:translateX(-50%) rotate(-45deg);}

.mobile-drawer{
  display:none;position:fixed;inset:72px 0 0 0;background:var(--white);z-index:88;
  padding:18px 20px 40px;overflow-y:auto;
}
.mobile-drawer.is-open{display:block;}
.mobile-drawer a{
  display:block;font-size:18px;line-height:56px;color:var(--text);
  border-bottom:1px solid var(--line);
}
.mobile-drawer a.active{color:var(--brand);font-weight:600;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:11px 20px;font-size:15.5px;font-weight:600;
  border-radius:var(--radius-btn);border:1.5px solid transparent;cursor:pointer;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
  text-align:center;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--shadow-1);}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 6px 18px rgba(232,98,42,.25);}
.btn-accent:hover{background:var(--accent-dark);color:#fff;transform:translateY(-1px);}
.btn-outline{background:transparent;color:var(--brand);border-color:var(--brand);}
.btn-outline:hover{background:rgba(31,107,82,.08);color:var(--brand);transform:translateY(-1px);}
.btn-ghost-light{background:rgba(255,255,255,.14);color:#fff;border-color:rgba(255,255,255,.55);}
.btn-ghost-light:hover{background:rgba(255,255,255,.24);color:#fff;}
.btn-sm{min-height:38px;padding:8px 15px;font-size:14px;}

/* ---------- hero slim ---------- */
.hero-slim{position:relative;overflow:hidden;background:var(--brand-900);}
.hero-slim .hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  opacity:.42;
}
.hero-slim .hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(11,43,34,.94) 0%,rgba(11,43,34,.78) 46%,rgba(20,72,58,.52) 100%);
}
.hero-inner{position:relative;z-index:2;padding:44px 24px 52px;}
.breadcrumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:rgba(255,255,255,.72);margin-bottom:20px;}
.breadcrumbs a{color:rgba(255,255,255,.86);}
.breadcrumbs a:hover{color:#fff;}
.breadcrumbs .sep{color:rgba(255,255,255,.42);}
.kicker{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:1.2px;
  color:#BFF0E0;background:rgba(18,181,165,.18);border:1px solid rgba(18,181,165,.4);
  padding:6px 13px;border-radius:999px;margin-bottom:18px;
}
.hero-slim h1{color:#fff;max-width:19em;}
.hero-sub{color:rgba(255,255,255,.86);font-size:17.5px;margin-top:16px;max-width:32em;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px 26px;margin-top:26px;}
.hero-meta li{display:flex;align-items:center;gap:8px;color:rgba(255,255,255,.82);font-size:14px;}
.hero-meta svg{flex:0 0 auto;}

/* ---------- sections ---------- */
.section{padding:88px 0;}
.section-tight{padding:64px 0;}
.section-white{background:var(--white);}
.section-alt{background:var(--bg-alt);}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head .eyebrow{
  display:inline-block;font-size:13px;font-weight:600;color:var(--brand);
  background:rgba(31,107,82,.09);padding:5px 12px;border-radius:999px;margin-bottom:14px;letter-spacing:.6px;
}
.section-head p{margin-top:14px;font-size:16.5px;}

/* ---------- lead intro ---------- */
.lead-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:start;}
.lead-copy h2{margin-bottom:18px;}
.lead-copy p+p{margin-top:16px;}
.lead-figure{
  border-radius:var(--radius);overflow:hidden;border:1px solid var(--border);box-shadow:var(--shadow-1);
}
.lead-figure img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.lead-figure figcaption{font-size:13.5px;color:var(--text-3);padding:12px 16px;background:var(--white);}
.check-list{display:grid;grid-template-columns:1fr 1fr;gap:18px 24px;margin-top:30px;}
.check-item{
  display:flex;gap:12px;background:var(--white);border:1px solid var(--border);
  border-radius:var(--radius);padding:18px;box-shadow:var(--shadow-1);
}
.check-item .dot{
  flex:0 0 auto;width:26px;height:26px;border-radius:8px;background:rgba(31,107,82,.1);
  display:flex;align-items:center;justify-content:center;margin-top:2px;
}
.check-item h3{font-size:16.5px;margin-bottom:6px;}
.check-item p{font-size:14.5px;line-height:1.7;}

/* ---------- feature alternating ---------- */
.feature{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.feature+.feature{margin-top:72px;}
.feature-media{border-radius:var(--radius);overflow:hidden;border:1px solid var(--border);box-shadow:var(--shadow-1);}
.feature-media img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .4s var(--ease);}
.feature-media:hover img{transform:scale(1.03);}
.feature.reverse .feature-media{order:2;}
.feature-body .index{
  font-size:13px;font-weight:700;color:var(--accent);letter-spacing:1.6px;font-variant-numeric:tabular-nums;
}
.feature-body h3{font-size:clamp(20px,2.4vw,26px);margin:12px 0 14px;line-height:1.4;}
.feature-body p{font-size:16.5px;}
.feature-body ul{margin-top:18px;display:grid;gap:10px;}
.feature-body ul li{position:relative;padding-left:22px;font-size:15.5px;color:var(--text-2);}
.feature-body ul li::before{
  content:"";position:absolute;left:0;top:.62em;width:8px;height:8px;border-radius:3px;
  background:var(--brand);opacity:.85;
}

/* ---------- stat bar ---------- */
.stat-bar{background:var(--brand-900);color:#fff;padding:56px 0;}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);}
.stat-item{padding:0 26px;border-left:1px solid rgba(255,255,255,.16);}
.stat-item:first-child{border-left:0;padding-left:0;}
.stat-num{font-size:clamp(30px,3.6vw,44px);font-weight:700;line-height:1.1;font-variant-numeric:tabular-nums;color:#fff;}
.stat-num span{font-size:16px;font-weight:600;color:#8FD6C2;margin-left:4px;}
.stat-item p{color:rgba(255,255,255,.72);font-size:14px;margin-top:10px;line-height:1.7;}

/* ---------- FAQ ---------- */
.faq-list{max-width:880px;display:grid;gap:12px;}
.faq-item{background:var(--white);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-1);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:none;border:0;cursor:pointer;text-align:left;
  padding:20px 22px;font-size:17px;font-weight:600;color:var(--text);line-height:1.55;
}
.faq-q:hover{color:var(--brand);}
.faq-q .chev{flex:0 0 auto;width:22px;height:22px;transition:transform .25s var(--ease);color:var(--brand);}
.faq-item.is-open .faq-q .chev{transform:rotate(180deg);}
.faq-a{display:none;padding:0 22px 22px;border-top:1px solid var(--line);}
.faq-item.is-open .faq-a{display:block;}
.faq-a p{font-size:15px;line-height:1.85;color:var(--text-2);padding-top:16px;}

/* ---------- CTA band ---------- */
.cta-band{background:var(--bg-alt);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.cta-inner{
  display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap;
  padding:56px 0;
}
.cta-inner h2{max-width:22em;}
.cta-inner p{margin-top:12px;font-size:16px;max-width:38em;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- related ---------- */
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.related-card{
  background:var(--white);border:1px solid var(--border);border-radius:var(--radius);
  padding:24px;box-shadow:var(--shadow-1);display:flex;flex-direction:column;gap:12px;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.related-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#CFDACF;}
.related-card .tag{
  align-self:flex-start;font-size:12.5px;color:var(--brand);background:rgba(31,107,82,.09);
  padding:4px 10px;border-radius:999px;font-weight:600;
}
.related-card h3{font-size:18px;}
.related-card p{font-size:14.5px;line-height:1.75;}
.related-card .more{margin-top:auto;font-size:14.5px;font-weight:600;color:var(--brand);display:inline-flex;align-items:center;gap:6px;}
.related-card:hover .more{color:var(--accent);}

/* ---------- footer ---------- */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.78);padding:64px 0 26px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;}
.site-footer .brand-text strong{color:#fff;}
.site-footer .brand-text small{color:rgba(255,255,255,.55);}
.footer-brand p{margin-top:16px;font-size:14.5px;color:rgba(255,255,255,.7);max-width:30em;line-height:1.8;}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px;font-weight:600;}
.footer-col ul{display:grid;gap:11px;}
.footer-col a,.footer-col span{font-size:14px;color:rgba(255,255,255,.72);}
.footer-col a:hover{color:var(--cyan);}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13.5px;color:rgba(255,255,255,.6);
}

/* ---------- to top ---------- */
.to-top{
  position:fixed;right:22px;bottom:26px;width:46px;height:46px;border-radius:50%;
  background:var(--white);border:1px solid var(--border);color:var(--brand);
  display:flex;align-items:center;justify-content:center;cursor:pointer;
  box-shadow:var(--shadow-2);opacity:0;visibility:hidden;transform:translateY(8px);
  transition:.25s var(--ease);z-index:70;
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{color:var(--accent);}

/* ---------- mobile tabbar ---------- */
.tabbar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:95;
  background:rgba(255,255,255,.98);border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
  box-shadow:0 -4px 18px rgba(11,43,34,.06);
}
.tabbar ul{display:grid;grid-template-columns:repeat(5,1fr);}
.tabbar a{
  position:relative;height:60px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  font-size:10.5px;color:var(--text-3);
}
.tabbar a svg{width:22px;height:22px;}
.tabbar a.active{color:var(--brand);font-weight:600;}
.tabbar a.active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:28px;height:2px;border-radius:2px;background:var(--brand);
}

/* ---------- modal ---------- */
.modal{position:fixed;inset:0;z-index:120;display:none;}
.modal.is-open{display:block;}
.modal-mask{position:absolute;inset:0;background:rgba(11,43,34,.55);backdrop-filter:blur(2px);}
.modal-panel{
  position:relative;margin:6vh auto 0;width:min(540px,calc(100% - 32px));
  background:var(--white);border-radius:var(--radius);box-shadow:0 24px 60px rgba(11,43,34,.28);
  padding:28px 26px 26px;max-height:88vh;overflow-y:auto;
}
.modal-close{
  position:absolute;top:12px;right:12px;width:44px;height:44px;border-radius:50%;
  border:1px solid var(--border);background:var(--white);color:var(--text-2);font-size:20px;line-height:1;cursor:pointer;
}
.modal-close:hover{color:var(--accent);border-color:#E7C9B8;}
.modal-panel h3{font-size:21px;margin-bottom:8px;padding-right:44px;}
.modal-panel>p{font-size:14.5px;color:var(--text-2);margin-bottom:20px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:14px;font-weight:600;color:var(--text);margin-bottom:7px;}
.field input,.field textarea{
  width:100%;font-family:inherit;font-size:15px;color:var(--text);
  border:1.5px solid var(--border);border-radius:var(--radius-btn);
  background:var(--white);padding:10px 13px;min-height:44px;
  transition:border-color .18s var(--ease),background .18s var(--ease);
}
.field textarea{min-height:92px;resize:vertical;line-height:1.7;}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);background:#F4F9F6;
}
.field .err{display:none;font-size:13px;color:#C7441B;margin-top:6px;}
.field.has-error input,.field.has-error textarea{border-color:#C7441B;}
.field.has-error .err{display:block;}
.consent{display:flex;gap:10px;align-items:flex-start;font-size:13.5px;color:var(--text-2);margin:6px 0 18px;}
.consent input{width:18px;height:18px;margin-top:3px;flex:0 0 auto;accent-color:var(--brand);}
.form-note{font-size:12.5px;color:var(--text-3);margin-top:12px;line-height:1.7;}
.form-success{
  display:none;background:rgba(18,181,165,.1);border:1px solid rgba(18,181,165,.4);
  border-radius:var(--radius);padding:18px;font-size:15px;color:#0E6F66;
}
.form-success.is-visible{display:block;}
.modal .btn[disabled]{opacity:.65;cursor:not-allowed;}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  .main-nav{display:none;}
  .nav-toggle{display:block;}
  .header-actions .btn{display:none;}
  .tabbar{display:block;}
  body{padding-bottom:80px;}
  .to-top{bottom:82px;right:16px;}
  .section{padding:64px 0;}
  .lead-grid{grid-template-columns:1fr;gap:34px;}
  .stat-grid{grid-template-columns:1fr 1fr;gap:28px 0;}
  .stat-item:nth-child(odd){border-left:0;padding-left:0;}
  .stat-item{padding:0 18px;}
  .related-grid{grid-template-columns:1fr 1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .feature{gap:34px;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .container{padding:0 20px;}
  .hero-inner{padding:32px 20px 40px;}
  .section{padding:48px 0;}
  .section-tight{padding:44px 0;}
  .check-list{grid-template-columns:1fr;}
  .feature{grid-template-columns:1fr;gap:22px;}
  .feature.reverse .feature-media{order:0;}
  .feature+.feature{margin-top:52px;}
  .stat-grid{grid-template-columns:1fr;gap:26px;}
  .stat-item{border-left:0;padding:0;border-top:1px solid rgba(255,255,255,.16);padding-top:20px;}
  .stat-item:first-child{border-top:0;padding-top:0;}
  .related-grid{grid-template-columns:1fr;}
  .cta-inner{padding:44px 0;gap:22px;}
  .footer-grid{grid-template-columns:1fr;}
  .modal-panel{
    position:fixed;left:0;right:0;bottom:0;top:auto;margin:0;width:100%;
    border-radius:20px 20px 0 0;max-height:90vh;padding:24px 20px 28px;
  }
  .footer-bottom{flex-direction:column;gap:8px;}
}
@media (min-width:1024px){
  .mobile-drawer{display:none !important;}
}

/* roulang page: category4 */
/* ============ 设计变量 ============ */
:root{
  --brand:#1F6B52;
  --brand-600:#1A5C46;
  --brand-800:#14483A;
  --brand-900:#0B2B22;
  --orange:#E8622A;
  --cyan:#12B5A5;
  --bg:#F7F6F1;
  --white:#FFFFFF;
  --bg-alt:#EDF1EA;
  --ink:#17201C;
  --ink-2:#4A5750;
  --ink-3:#7C8A83;
  --line:#DFE4DC;
  --line-2:#E8ECE6;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --sh-1:0 1px 2px rgba(11,43,34,.06);
  --sh-2:0 10px 26px rgba(11,43,34,.10);
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1200px;
  --header-h:72px;
}

/* ============ 基础重置 ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:MiSans,"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:17px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand);text-decoration:none;transition:color .18s var(--ease);}
a:hover{color:var(--brand-600);}
button{font-family:inherit;cursor:pointer;}
input,textarea,select{font-family:inherit;font-size:16px;}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;line-height:1.3;}
p{margin:0 0 1em;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;}
::selection{background:rgba(18,181,165,.22);}

.skip-link{
  position:absolute;left:-9999px;top:0;z-index:200;
  background:var(--brand);color:#fff;padding:10px 18px;border-radius:0 0 10px 0;
}
.skip-link:focus{left:0;color:#fff;}

.container{
  width:100%;max-width:var(--container);
  margin:0 auto;padding:0 24px;
}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(247,246,241,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line-2);
  transition:box-shadow .25s var(--ease),background .25s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 4px 18px rgba(11,43,34,.08);background:rgba(255,255,255,.96);}
.header-inner{
  display:flex;align-items:center;gap:28px;
  height:var(--header-h);
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand:hover{color:inherit;}
.brand-mark{
  width:38px;height:38px;border-radius:12px;
  background:linear-gradient(140deg,var(--brand-800),var(--brand));
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 4px 12px rgba(31,107,82,.25);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:17px;letter-spacing:.2px;color:var(--ink);}
.brand-text small{font-size:11px;color:var(--ink-3);letter-spacing:2px;}

.main-nav{display:flex;align-items:center;gap:6px;margin-left:auto;}
.main-nav a{
  position:relative;
  padding:10px 12px;font-size:15px;color:var(--ink-2);
  border-radius:8px;
}
.main-nav a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:4px;height:2px;
  background:var(--brand);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .2s var(--ease);
}
.main-nav a:hover{color:var(--brand);background:rgba(31,107,82,.06);}
.main-nav a:hover::after,.main-nav a.active::after{transform:scaleX(1);}
.main-nav a.active{color:var(--brand);font-weight:600;}

.header-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);
  background:var(--white);border-radius:10px;position:relative;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";position:absolute;left:12px;width:20px;height:2px;background:var(--ink);
  border-radius:2px;transition:.25s var(--ease);
}
.nav-toggle span{top:21px;}
.nav-toggle span::before{top:-6px;left:0;}
.nav-toggle span::after{top:6px;left:0;}
.nav-toggle[aria-expanded="true"] span{background:transparent;}
.nav-toggle[aria-expanded="true"] span::before{top:0;transform:rotate(45deg);}
.nav-toggle[aria-expanded="true"] span::after{top:0;transform:rotate(-45deg);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;
  font-size:15px;font-weight:600;line-height:1;
  border-radius:var(--radius-btn);border:1.5px solid transparent;
  transition:transform .18s var(--ease),background .18s var(--ease),box-shadow .18s var(--ease),color .18s var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 4px 14px rgba(31,107,82,.22);}
.btn-primary:hover{background:var(--brand-600);color:#fff;transform:translateY(-1px);box-shadow:0 8px 20px rgba(31,107,82,.28);}
.btn-ghost{background:transparent;color:var(--brand);border-color:var(--brand);}
.btn-ghost:hover{background:rgba(31,107,82,.08);color:var(--brand-600);}
.btn-light{background:#fff;color:var(--brand);}
.btn-light:hover{background:#F1F6F3;color:var(--brand-600);transform:translateY(-1px);}
.btn-orange{background:var(--orange);color:#fff;box-shadow:0 4px 14px rgba(232,98,42,.25);}
.btn-orange:hover{background:#d5551f;color:#fff;transform:translateY(-1px);}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px;}
.btn-block{width:100%;}
.btn:active{transform:translateY(0);}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;
  font-size:13px;font-weight:600;line-height:1.6;
  background:var(--bg-alt);color:var(--brand);
}
.badge-cyan{background:rgba(18,181,165,.10);color:#0E8F83;box-shadow:inset 0 0 0 1px rgba(18,181,165,.35);}
.badge-orange{background:rgba(232,98,42,.10);color:#C44E1D;box-shadow:inset 0 0 0 1px rgba(232,98,42,.28);}

/* ============ 面包屑 ============ */
.crumbs-wrap{background:var(--white);border-bottom:1px solid var(--line-2);}
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  padding:14px 0;font-size:14px;color:var(--ink-3);
}
.crumbs a{color:var(--brand);font-weight:500;}
.crumbs a:hover{color:var(--brand-600);text-decoration:underline;}
.crumbs .sep{color:#B9C3BC;}
.crumbs .current{color:var(--ink-2);}

/* ============ 页面 Hero ============ */
.page-hero{
  position:relative;
  background:linear-gradient(115deg,rgba(11,43,34,.94) 0%,rgba(20,72,58,.90) 48%,rgba(31,107,82,.86) 100%),
             url("/assets/images/backpic/back-3.png") center/cover no-repeat;
  color:#fff;
  padding:72px 0 64px;
  overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;right:-90px;bottom:-120px;width:420px;height:420px;
  border:1.5px dashed rgba(143,214,194,.28);border-radius:50%;
}
.page-hero .container{position:relative;z-index:2;}
.page-hero h1{
  color:#fff;
  font-size:clamp(28px,4.2vw,44px);
  line-height:1.25;font-weight:700;
  max-width:900px;
  letter-spacing:.4px;
}
.page-hero .hero-sub{
  margin:18px 0 0;font-size:17px;color:rgba(255,255,255,.86);max-width:720px;
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.hero-tags .tag{
  padding:7px 14px;border-radius:999px;font-size:13.5px;
  background:rgba(255,255,255,.12);color:#EAF5F1;
  border:1px solid rgba(143,214,194,.35);
  backdrop-filter:blur(4px);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}

/* ============ 锚点快捷入口行 ============ */
.anchor-bar{
  position:sticky;top:var(--header-h);z-index:60;
  background:rgba(255,255,255,.97);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.anchor-scroll{
  display:flex;align-items:center;gap:10px;
  overflow-x:auto;padding:12px 0;
  scrollbar-width:none;
}
.anchor-scroll::-webkit-scrollbar{display:none;}
.anchor-scroll .anchor-label{
  flex-shrink:0;font-size:13px;color:var(--ink-3);padding-right:6px;
  border-right:1px solid var(--line);margin-right:4px;
}
.anchor-scroll a{
  flex-shrink:0;
  padding:7px 15px;border-radius:999px;
  font-size:14px;color:var(--ink-2);
  background:var(--bg);
  border:1px solid var(--line);
  transition:.18s var(--ease);
}
.anchor-scroll a:hover{background:var(--bg-alt);color:var(--brand);border-color:var(--brand);}
.anchor-scroll a.on{background:var(--brand);color:#fff;border-color:var(--brand);}

/* ============ 通用板块 ============ */
.section{padding:88px 0;}
.section-alt{background:var(--white);}
.section-mint{background:var(--bg-alt);}
.section-dark{background:var(--brand-900);color:#EAF5F1;}
.section-head{max-width:780px;margin-bottom:44px;}
.section-head h2{font-size:clamp(22px,3vw,32px);line-height:1.3;}
.section-head p{margin-top:14px;color:var(--ink-2);font-size:16.5px;}
.eyebrow{
  display:inline-block;margin-bottom:14px;
  font-size:13px;font-weight:700;letter-spacing:2px;color:var(--brand);
  text-transform:uppercase;
}
.eyebrow::before{
  content:"";display:inline-block;width:20px;height:2px;background:var(--orange);
  vertical-align:middle;margin-right:8px;border-radius:2px;
}

/* ============ 瀑布流卡片 ============ */
.waterfall{
  column-count:3;column-gap:24px;
}
.wf-card{
  break-inside:avoid;
  margin:0 0 24px;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--sh-1);
  overflow:hidden;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.wf-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#CFDACF;}
.wf-thumb{
  position:relative;width:100%;aspect-ratio:16/10;overflow:hidden;background:var(--bg-alt);
}
.wf-thumb img{width:100%;height:100%;object-fit:cover;}
.wf-body{padding:22px 22px 24px;}
.wf-body h3{font-size:19px;line-height:1.45;margin-bottom:10px;}
.wf-card:hover h3{color:var(--brand);}
.wf-body>p{font-size:15.5px;color:var(--ink-2);line-height:1.8;margin-bottom:14px;}
.wf-list li{
  position:relative;padding-left:20px;margin-bottom:9px;
  font-size:15px;color:var(--ink-2);line-height:1.75;
}
.wf-list li::before{
  content:"";position:absolute;left:0;top:11px;
  width:7px;height:7px;border-radius:50%;
  background:var(--cyan);opacity:.8;
}
.wf-meta{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:14px 22px;border-top:1px dashed var(--line);
  font-size:13px;color:var(--ink-3);background:#FCFCFA;
}
.wf-meta .pick{color:var(--brand);font-weight:600;display:inline-flex;align-items:center;gap:6px;}
.wf-num{
  font-family:"Barlow Semi Condensed",system-ui,sans-serif;
  font-variant-numeric:tabular-nums;
  font-size:34px;font-weight:700;color:rgba(31,107,82,.16);
  line-height:1;margin-bottom:6px;
}

/* ============ 对比型信息块 ============ */
.compare-grid{
  display:grid;grid-template-columns:1fr 1fr;gap:24px;
}
.compare-card{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:30px 28px;
  box-shadow:var(--sh-1);
  position:relative;
  overflow:hidden;
}
.compare-card::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:4px;
  background:var(--brand);
}
.compare-card.alt::before{background:var(--orange);}
.compare-card h3{font-size:20px;margin-bottom:8px;}
.compare-card .lead{font-size:15px;color:var(--ink-3);margin-bottom:20px;}
.compare-card ul li{
  display:flex;gap:12px;padding:12px 0;
  border-bottom:1px solid var(--line-2);
  font-size:15.5px;color:var(--ink-2);line-height:1.75;
}
.compare-card ul li:last-child{border-bottom:0;}
.compare-card ul li i{color:var(--brand);margin-top:6px;font-size:13px;}
.compare-card.alt ul li i{color:var(--orange);}
.compare-card .concl{
  margin-top:18px;padding:14px 16px;border-radius:10px;
  background:var(--bg-alt);color:var(--brand-800);font-size:14.5px;font-weight:600;
}

/* ============ 准备清单卡 ============ */
.prep-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.prep-card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:28px 26px;box-shadow:var(--sh-1);
  transition:transform .18s var(--ease),box-shadow .18s var(--ease);
}
.prep-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.prep-icon{
  width:46px;height:46px;border-radius:12px;background:rgba(31,107,82,.09);
  color:var(--brand);display:flex;align-items:center;justify-content:center;
  font-size:18px;margin-bottom:16px;
}
.prep-card h3{font-size:18px;margin-bottom:10px;}
.prep-card p{font-size:15px;color:var(--ink-2);margin:0;line-height:1.8;}

/* ============ 简易提示条 ============ */
.notice{
  display:flex;gap:16px;align-items:flex-start;
  background:var(--white);border:1px solid var(--line);
  border-left:4px solid var(--cyan);
  border-radius:12px;padding:22px 24px;box-shadow:var(--sh-1);
}
.notice i{color:var(--cyan);font-size:18px;margin-top:4px;}
.notice p{margin:0;font-size:15.5px;color:var(--ink-2);}
.notice strong{color:var(--ink);}

/* ============ FAQ ============ */
.faq-list{max-width:900px;}
.faq-item{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:12px;
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.faq-item.open{border-color:#C6D8CF;box-shadow:var(--sh-1);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:transparent;border:0;text-align:left;
  padding:20px 24px;
  font-size:17px;font-weight:700;color:var(--ink);line-height:1.55;
}
.faq-q:hover{color:var(--brand);}
.faq-q .arrow{
  flex-shrink:0;width:26px;height:26px;border-radius:50%;
  background:var(--bg-alt);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-size:12px;
  transition:transform .25s var(--ease),background .25s var(--ease);
}
.faq-item.open .arrow{transform:rotate(180deg);background:var(--brand);color:#fff;}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .3s var(--ease),padding .3s var(--ease);
  padding:0 24px;
}
.faq-item.open .faq-a{padding:0 24px 22px;}
.faq-a p{margin:0;font-size:15px;line-height:1.85;color:var(--ink-2);}

/* ============ 相关入口 ============ */
.related-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.related-card{
  display:block;background:var(--white);border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.related-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#CFDACF;color:inherit;}
.related-thumb{aspect-ratio:16/10;overflow:hidden;background:var(--bg-alt);}
.related-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);}
.related-card:hover .related-thumb img{transform:scale(1.04);}
.related-body{padding:18px 20px 22px;}
.related-body h3{font-size:16.5px;line-height:1.5;margin:8px 0 8px;}
.related-card:hover h3{color:var(--brand);}
.related-body p{font-size:14px;color:var(--ink-3);margin:0;line-height:1.7;}

/* ============ CTA 带 ============ */
.cta-band{
  background:linear-gradient(120deg,var(--brand-800),var(--brand));
  border-radius:18px;
  padding:48px 44px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;
  color:#fff;position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-70px;top:-70px;width:260px;height:260px;
  border:1.5px dashed rgba(255,255,255,.22);border-radius:50%;
}
.cta-band h2{color:#fff;font-size:clamp(20px,2.6vw,28px);position:relative;z-index:2;}
.cta-band p{color:rgba(255,255,255,.84);margin:12px 0 0;max-width:640px;font-size:15.5px;position:relative;z-index:2;}
.cta-band .cta-actions{display:flex;flex-wrap:wrap;gap:14px;position:relative;z-index:2;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--brand-900);color:rgba(233,243,238,.82);
  padding:68px 0 26px;font-size:14px;
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;
}
.footer-brand .brand{margin-bottom:18px;}
.footer-brand .brand-text strong{color:#fff;}
.footer-brand .brand-text small{color:rgba(233,243,238,.55);}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(233,243,238,.66);max-width:360px;}
.footer-col h4{
  font-size:15px;color:#fff;margin-bottom:16px;font-weight:700;letter-spacing:.5px;
}
.footer-col ul li{margin-bottom:11px;}
.footer-col ul li a,.footer-col ul li span{color:rgba(233,243,238,.72);font-size:14px;}
.footer-col ul li a:hover{color:var(--cyan);}
.footer-bottom{
  margin-top:48px;padding-top:22px;
  border-top:1px solid rgba(233,243,238,.14);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(233,243,238,.52);
}

/* ============ 移动端抽屉 ============ */
.mobile-drawer{
  position:fixed;inset:0;z-index:95;
  background:var(--white);
  transform:translateX(100%);
  transition:transform .3s var(--ease);
  padding:24px;
  display:flex;flex-direction:column;
  overflow-y:auto;
}
.mobile-drawer.open{transform:translateX(0);}
.mobile-drawer .drawer-head{
  display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;
}
.drawer-close{
  width:44px;height:44px;border-radius:10px;border:1px solid var(--line);
  background:var(--white);color:var(--ink);font-size:18px;
}
.mobile-drawer a.d-link{
  display:block;font-size:18px;line-height:56px;
  border-bottom:1px solid var(--line-2);color:var(--ink-2);
}
.mobile-drawer a.d-link.active{color:var(--brand);font-weight:700;}
.mobile-drawer .drawer-cta{margin-top:26px;}

/* ============ 移动底部 Tab ============ */
.mobile-tabbar{
  display:none;
  position:fixed;left:0;right:0;bottom:0;z-index:90;
  height:calc(60px + env(safe-area-inset-bottom));
  padding-bottom:env(safe-area-inset-bottom);
  background:rgba(255,255,255,.98);
  border-top:1px solid var(--line);
  box-shadow:0 -4px 18px rgba(11,43,34,.06);
}
.mobile-tabbar .tab-inner{
  display:grid;grid-template-columns:repeat(5,1fr);
  height:60px;
}
.mobile-tabbar a{
  position:relative;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  font-size:10.5px;color:var(--ink-3);
}
.mobile-tabbar a svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
.mobile-tabbar a.active{color:var(--brand);font-weight:600;}
.mobile-tabbar a.active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:26px;height:2px;border-radius:2px;background:var(--brand);
}

/* ============ 返回顶部 ============ */
.back-top{
  position:fixed;right:24px;bottom:28px;z-index:70;
  width:46px;height:46px;border-radius:50%;
  background:var(--brand);color:#fff;border:0;
  display:flex;align-items:center;justify-content:center;font-size:16px;
  box-shadow:0 8px 22px rgba(31,107,82,.28);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:.25s var(--ease);
}
.back-top.show{opacity:1;visibility:visible;transform:translateY(0);}
.back-top:hover{background:var(--brand-600);}

/* ============ 表单弹层 ============ */
.modal-mask{
  position:fixed;inset:0;z-index:120;
  background:rgba(11,43,34,.55);
  backdrop-filter:blur(3px);
  display:flex;align-items:center;justify-content:center;
  padding:24px;
  opacity:0;visibility:hidden;transition:.25s var(--ease);
}
.modal-mask.open{opacity:1;visibility:visible;}
.modal-panel{
  width:100%;max-width:540px;background:var(--white);
  border-radius:18px;padding:32px 32px 28px;
  box-shadow:0 24px 60px rgba(11,43,34,.28);
  transform:translateY(14px) scale(.98);
  transition:transform .28s var(--ease);
  max-height:90vh;overflow-y:auto;
}
.modal-mask.open .modal-panel{transform:translateY(0) scale(1);}
.modal-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-bottom:8px;}
.modal-head h3{font-size:21px;}
.modal-close{
  flex-shrink:0;width:44px;height:44px;border-radius:10px;
  border:1px solid var(--line);background:var(--white);color:var(--ink-2);font-size:17px;
  transition:.18s var(--ease);
}
.modal-close:hover{background:var(--bg-alt);color:var(--brand);}
.modal-desc{font-size:14.5px;color:var(--ink-2);margin-bottom:22px;}
.field{margin-bottom:18px;}
.field label{display:block;font-size:14px;font-weight:600;color:var(--ink);margin-bottom:8px;}
.field label .req{color:var(--orange);margin-left:3px;}
.field input[type="text"],
.field input[type="tel"],
.field textarea{
  width:100%;height:44px;padding:0 14px;
  border:1.5px solid var(--line);border-radius:10px;
  background:var(--white);color:var(--ink);
  transition:border-color .18s var(--ease),background .18s var(--ease),box-shadow .18s var(--ease);
}
.field textarea{height:auto;min-height:92px;padding:12px 14px;line-height:1.7;resize:vertical;}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);background:#F5FAF7;
}
.field.error input,.field.error textarea{border-color:var(--orange);}
.field .err-msg{display:none;margin-top:7px;font-size:13px;color:#C44E1D;}
.field.error .err-msg{display:block;}
.check-row{display:flex;align-items:flex-start;gap:10px;margin-bottom:20px;}
.check-row input{width:18px;height:18px;margin-top:4px;accent-color:var(--brand);flex-shrink:0;}
.check-row label{font-size:13.5px;color:var(--ink-2);line-height:1.7;margin:0;}
.check-row.error label{color:#C44E1D;}
.modal-success{display:none;text-align:center;padding:20px 0 8px;}
.modal-success .ok-icon{
  width:64px;height:64px;border-radius:50%;background:rgba(18,181,165,.12);
  color:var(--cyan);display:flex;align-items:center;justify-content:center;
  font-size:26px;margin:0 auto 18px;
}
.modal-success h3{font-size:20px;margin-bottom:10px;}
.modal-success p{font-size:15px;color:var(--ink-2);margin-bottom:22px;}
.btn.loading{opacity:.75;pointer-events:none;}
.btn.loading .fa-spinner{display:inline-block;}

/* ============ 响应式 ============ */
@media screen and (max-width:1023px){
  .main-nav{display:none;}
  .nav-toggle{display:block;}
  .header-actions .btn-sm{display:none;}
  .mobile-tabbar{display:block;}
  body{padding-bottom:80px;}
  .waterfall{column-count:2;}
  .related-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
  .prep-grid{grid-template-columns:1fr 1fr;}
  .back-top{bottom:96px;right:16px;}
  .section{padding:64px 0;}
  .page-hero{padding:56px 0 50px;}
}
@media screen and (max-width:767px){
  .container{padding:0 20px;}
  body{font-size:16px;}
  .waterfall{column-count:1;}
  .compare-grid{grid-template-columns:1fr;}
  .prep-grid{grid-template-columns:1fr;}
  .related-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .section{padding:48px 0;}
  .section-head{margin-bottom:30px;}
  .cta-band{padding:34px 24px;border-radius:16px;}
  .cta-band .cta-actions{width:100%;}
  .cta-band .cta-actions .btn{flex:1 1 auto;}
  .modal-mask{padding:0;align-items:flex-end;}
  .modal-panel{
    max-width:100%;border-radius:20px 20px 0 0;
    padding:26px 22px calc(24px + env(safe-area-inset-bottom));
    transform:translateY(100%);
    max-height:92vh;
  }
  .modal-mask.open .modal-panel{transform:translateY(0);}
  .anchor-bar{top:64px;}
  .header-inner{height:64px;}
  .page-hero h1{font-size:26px;}
}
@media screen and (max-width:520px){
  .brand-text strong{font-size:15px;}
  .brand-text small{display:none;}
  .hero-tags .tag{font-size:12.5px;padding:6px 12px;}
  .wf-body{padding:18px 18px 20px;}
  .compare-card{padding:24px 20px;}
}