/* roulang page: index */
:root{
  --c-primary:#1E6B5C;
  --c-primary-dark:#17584C;
  --c-primary-soft:#E7F0ED;
  --c-ink:#16231F;
  --c-ink-2:#1B2422;
  --c-muted:#5C6A66;
  --c-faint:#8A9691;
  --c-sand:#D99A4E;
  --c-sand-soft:#FBF1E3;
  --c-clay:#B7642F;
  --c-bg:#F6F7F4;
  --c-bg-alt:#EDF0EC;
  --c-card:#FFFFFF;
  --c-line:#DCE3DE;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:18px;
  --r-pill:999px;
  --sh-1:0 6px 22px rgba(22,35,31,.06);
  --sh-2:0 12px 30px rgba(22,35,31,.10);
  --sp-section:104px;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Noto Sans SC","HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  font-size:17px;
  line-height:1.85;
  color:var(--c-ink-2);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;object-fit:cover;}
a{color:var(--c-primary);text-decoration:none;transition:color .18s ease,border-color .18s ease;}
a:hover{color:var(--c-primary-dark);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:700;letter-spacing:.01em;}
p{margin:0 0 1.1em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px;}

.site-container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
.section{padding:var(--sp-section) 0;}
.section-alt{background:var(--c-bg-alt);}
.section-head{max-width:760px;margin-bottom:52px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.06em;
  color:var(--c-primary);
  background:var(--c-primary-soft);
  border-radius:var(--r-pill);
  padding:6px 14px;
  margin-bottom:18px;
}
.section-head h2{
  position:relative;
  font-size:clamp(22px,2.6vw,32px);
  line-height:1.35;
  padding-left:16px;
  margin-bottom:14px;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;
  width:4px;border-radius:2px;background:var(--c-primary);
}
.section-head.center h2{padding-left:0;}
.section-head.center h2::before{display:none;}
.section-head p{color:var(--c-muted);font-size:16px;margin-bottom:0;}
h3{font-size:22px;line-height:1.45;}
h4{font-size:18px;line-height:1.5;}

/* ---------- buttons ---------- */
.btn-main,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:16px;font-weight:600;line-height:1.2;
  padding:13px 24px;border-radius:10px;
  border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease,background-color .18s ease,box-shadow .18s ease,color .18s ease,border-color .18s ease;
}
.btn-main{background:var(--c-primary);color:#fff;box-shadow:0 8px 20px rgba(30,107,92,.22);}
.btn-main:hover{background:var(--c-primary-dark);color:#fff;transform:translateY(-1px);box-shadow:0 12px 26px rgba(30,107,92,.28);}
.btn-ghost{background:transparent;color:var(--c-primary);border-color:rgba(30,107,92,.45);}
.btn-ghost:hover{background:var(--c-primary-soft);color:var(--c-primary-dark);border-color:var(--c-primary);}
.btn-main.on-dark{background:#fff;color:var(--c-primary-dark);box-shadow:none;}
.btn-main.on-dark:hover{background:var(--c-sand);color:#3A2410;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(246,247,244,.96);
  border-bottom:1px solid transparent;
  transition:box-shadow .2s ease,border-color .2s ease,background-color .2s ease;
}
.site-header.is-stuck{
  background:#fff;
  border-bottom-color:var(--c-line);
  box-shadow:0 4px 18px rgba(22,35,31,.06);
}
.nav-inner{
  display:flex;align-items:center;gap:22px;
  min-height:74px;
}
.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto;}
.brand-mark{
  width:38px;height:38px;border-radius:11px;
  background:linear-gradient(145deg,#1E6B5C,#2E8C77);
  color:#fff;display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:700;letter-spacing:.02em;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-name{font-size:17px;font-weight:700;color:var(--c-ink);}
.brand-sub{font-size:12px;color:var(--c-faint);letter-spacing:.04em;}
.nav-chips{
  display:flex;align-items:center;gap:6px;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-pill);
  padding:5px;margin-left:8px;
}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--c-muted);
  padding:8px 16px;border-radius:var(--r-pill);white-space:nowrap;
  transition:background-color .18s ease,color .18s ease;
}
.chip:hover{background:var(--c-primary-soft);color:var(--c-primary-dark);}
.chip.active{background:var(--c-primary);color:#fff;}
.chip.active:hover{background:var(--c-primary-dark);color:#fff;}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:12px;}
.nav-cta{font-size:15px;padding:11px 20px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:11px;
  border:1px solid var(--c-line);background:#fff;color:var(--c-ink);
  align-items:center;justify-content:center;font-size:17px;
}
.mobile-nav{width:310px;background:var(--c-bg);}
.mobile-nav .offcanvas-header{border-bottom:1px solid var(--c-line);}
.mobile-nav .chip-stack{display:flex;flex-direction:column;gap:8px;padding:22px 20px;}
.mobile-nav .chip{justify-content:flex-start;padding:12px 16px;border-radius:12px;background:#fff;border:1px solid var(--c-line);}
.mobile-nav .chip.active{background:var(--c-primary);border-color:var(--c-primary);}
.mobile-nav .panel-cta{padding:0 20px 26px;}

/* ---------- hero ---------- */
.hero{
  position:relative;
  padding:78px 0 92px;
  background-image:linear-gradient(115deg,rgba(246,247,244,.97) 0%,rgba(246,247,244,.90) 45%,rgba(231,240,237,.72) 100%),url(/assets/images/backpic/back-1.png);
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--c-line);
}
.hero-copy{max-width:600px;position:relative;z-index:2;}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--c-primary-dark);
  background:#fff;border:1px solid var(--c-line);
  padding:7px 15px;border-radius:var(--r-pill);margin-bottom:22px;
}
.hero-tag i{color:var(--c-sand);}
.hero h1{
  font-size:clamp(28px,4vw,44px);
  line-height:1.25;
  letter-spacing:.01em;
  margin-bottom:20px;
}
.hero h1 em{font-style:normal;color:var(--c-primary);}
.hero-lead{
  font-size:17px;color:var(--c-muted);line-height:1.9;
  margin-bottom:30px;max-width:560px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px;}
.hero-points{display:flex;flex-wrap:wrap;gap:10px 22px;}
.hero-points li{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--c-muted);}
.hero-points i{color:var(--c-primary);font-size:13px;}
.hero-visual{position:relative;z-index:2;}
.hero-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);
  box-shadow:var(--sh-2);overflow:hidden;
}
.hero-card img{width:100%;height:280px;border-radius:0;}
.hero-card-body{padding:22px 24px 24px;}
.hero-card-body h4{margin-bottom:8px;}
.hero-card-body p{font-size:14.5px;color:var(--c-muted);margin-bottom:16px;line-height:1.8;}
.hero-mini{
  display:grid;grid-template-columns:repeat(3,1fr);gap:10px;
}
.hero-mini div{
  background:var(--c-bg-alt);border-radius:var(--r-md);
  padding:12px 10px;text-align:center;
}
.hero-mini strong{display:block;font-size:19px;color:var(--c-primary);line-height:1.2;}
.hero-mini span{font-size:12px;color:var(--c-faint);}

/* ---------- pain ---------- */
.pain-wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;}
.pain-list{display:flex;flex-direction:column;gap:18px;}
.pain-item{
  display:flex;gap:16px;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:22px 24px;box-shadow:var(--sh-1);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.pain-item:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(30,107,92,.35);}
.pain-num{
  flex:0 0 38px;height:38px;border-radius:11px;
  background:var(--c-primary-soft);color:var(--c-primary-dark);
  display:flex;align-items:center;justify-content:center;
  font-weight:700;font-size:15px;
}
.pain-item h4{margin-bottom:6px;font-size:17px;}
.pain-item p{font-size:14.5px;color:var(--c-muted);margin-bottom:0;line-height:1.8;}
.pain-media{border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1);border:1px solid var(--c-line);}
.pain-media img{width:100%;height:440px;}

/* ---------- solution timeline ---------- */
.solution-wrap{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:start;}
.timeline{position:relative;padding-left:6px;}
.step{
  position:relative;padding:0 0 30px 66px;
}
.step::before{
  content:"";position:absolute;left:23px;top:48px;bottom:0;width:1px;background:var(--c-line);
}
.step:last-child{padding-bottom:0;}
.step:last-child::before{display:none;}
.step-num{
  position:absolute;left:0;top:0;
  width:48px;height:48px;border-radius:14px;
  background:#fff;border:1px solid var(--c-line);
  color:var(--c-primary);font-weight:700;font-size:16px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--sh-1);
}
.step-body{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:22px 24px;box-shadow:var(--sh-1);
  transition:border-color .18s ease,box-shadow .18s ease;
}
.step-body:hover{border-color:rgba(30,107,92,.35);box-shadow:var(--sh-2);}
.step-body h4{margin-bottom:8px;}
.step-body p{font-size:14.5px;color:var(--c-muted);margin-bottom:12px;line-height:1.8;}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;}
.tag{
  font-size:12.5px;font-weight:600;color:var(--c-primary-dark);
  background:var(--c-primary-soft);border-radius:var(--r-pill);padding:4px 12px;
}
.tag.sand{background:var(--c-sand-soft);color:#8A5A21;}
.solution-media{position:sticky;top:100px;}
.solution-media img{width:100%;height:360px;border-radius:var(--r-lg);border:1px solid var(--c-line);box-shadow:var(--sh-1);}
.solution-note{
  margin-top:18px;background:#fff;border:1px solid var(--c-line);
  border-left:4px solid var(--c-sand);border-radius:var(--r-md);
  padding:18px 20px;font-size:14.5px;color:var(--c-muted);line-height:1.8;
}

/* ---------- metrics ---------- */
.metrics{
  display:grid;grid-template-columns:repeat(4,1fr);gap:18px;
}
.metric{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:28px 24px;box-shadow:var(--sh-1);
  transition:transform .18s ease,box-shadow .18s ease;
}
.metric:hover{transform:translateY(-3px);box-shadow:var(--sh-2);}
.metric strong{display:block;font-size:38px;line-height:1.1;color:var(--c-primary);letter-spacing:-.01em;}
.metric.alt strong{color:var(--c-sand);}
.metric span{display:block;font-size:13.5px;color:var(--c-faint);margin-top:8px;}
.metric p{font-size:14.5px;color:var(--c-muted);margin:12px 0 0;line-height:1.8;}

/* ---------- features ---------- */
.feature-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:22px;align-items:stretch;}
.feature-col{display:flex;flex-direction:column;gap:22px;}
.feature-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
  height:100%;
}
.feature-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(30,107,92,.3);}
.feature-card img{width:100%;height:220px;}
.feature-card.small img{height:150px;}
.feature-body{padding:24px 26px 26px;}
.feature-body h3{font-size:20px;margin-bottom:10px;}
.feature-body h4{font-size:17px;margin-bottom:8px;}
.feature-body p{font-size:14.5px;color:var(--c-muted);line-height:1.8;margin-bottom:14px;}
.text-link{font-weight:600;font-size:14.5px;border-bottom:1px solid transparent;}
.text-link:hover{border-bottom-color:var(--c-sand);color:var(--c-primary-dark);}

/* ---------- quotes ---------- */
.quote-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px;}
.quote-card{
  background:#fff;border:1px solid var(--c-line);border-left:4px solid var(--c-primary);
  border-radius:var(--r-md);padding:28px 30px;box-shadow:var(--sh-1);
}
.quote-card.offset{margin-top:32px;}
.quote-card blockquote{margin:0 0 20px;font-size:16.5px;line-height:1.9;color:var(--c-ink-2);}
.quote-person{display:flex;align-items:center;gap:12px;}
.avatar{
  width:44px;height:44px;border-radius:50%;
  background:var(--c-primary-soft);color:var(--c-primary-dark);
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;
  flex:0 0 44px;
}
.quote-person strong{display:block;font-size:15px;color:var(--c-ink);}
.quote-person span{font-size:13px;color:var(--c-faint);}

/* ---------- news ---------- */
.news-list{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.news-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
  height:100%;
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(30,107,92,.3);}
.news-card__link{display:flex;flex-direction:column;height:100%;padding:24px 26px 26px;color:inherit;}
.news-card__meta{display:flex;align-items:center;gap:12px;margin-bottom:14px;font-size:13px;color:var(--c-faint);}
.badge-soft{
  font-size:12.5px;font-weight:600;color:var(--c-primary-dark);
  background:var(--c-primary-soft);border-radius:var(--r-pill);padding:4px 12px;
}
.news-card__title{
  font-size:18px;line-height:1.5;margin-bottom:10px;color:var(--c-ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card__excerpt{
  font-size:14.5px;color:var(--c-muted);line-height:1.8;margin-bottom:18px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card__more{margin-top:auto;font-size:14px;font-weight:600;color:var(--c-primary);}
.news-card--feature{grid-column:span 2;}
.news-card--feature .news-card__title{font-size:22px;-webkit-line-clamp:3;}
.news-card--feature .news-card__excerpt{-webkit-line-clamp:4;}
.news-empty{
  background:#fff;border:1px dashed var(--c-line);border-radius:var(--r-lg);
  padding:56px 24px;text-align:center;
}
.news-empty i{font-size:30px;color:var(--c-faint);}
.news-empty p{margin:16px 0 18px;color:var(--c-muted);}

/* ---------- faq ---------- */
.faq-wrap{max-width:880px;margin:0 auto;}
.accordion-item{
  background:#fff;border:1px solid var(--c-line) !important;border-radius:var(--r-md) !important;
  margin-bottom:14px;overflow:hidden;box-shadow:var(--sh-1);
}
.accordion-button{
  font-size:16.5px;font-weight:600;color:var(--c-ink);
  background:#fff;padding:20px 24px 20px 26px;
  border-left:3px solid var(--c-primary);
  box-shadow:none !important;
}
.accordion-button:not(.collapsed){color:var(--c-primary-dark);background:var(--c-primary-soft);}
.accordion-button::after{width:16px;height:16px;background-size:16px;}
.accordion-body{padding:6px 26px 24px;font-size:15px;color:var(--c-muted);line-height:1.85;}

/* ---------- cta ---------- */
.cta-band{
  background:var(--c-ink);
  color:#fff;border-radius:0;
  padding:96px 0;
}
.cta-band h2{color:#fff;font-size:clamp(22px,2.6vw,32px);line-height:1.35;margin-bottom:14px;}
.cta-band p{color:rgba(255,255,255,.76);max-width:640px;font-size:16px;}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}
.cta-ghost{
  display:inline-flex;align-items:center;gap:8px;font-weight:600;font-size:16px;
  padding:13px 24px;border-radius:10px;color:#fff;
  border:1px solid rgba(255,255,255,.4);transition:background-color .18s ease,border-color .18s ease;
}
.cta-ghost:hover{background:rgba(255,255,255,.1);color:#fff;border-color:rgba(255,255,255,.7);}

/* ---------- footer ---------- */
.site-footer{background:var(--c-ink);color:rgba(255,255,255,.72);padding:74px 0 30px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.site-footer h4{color:#fff;font-size:16px;margin-bottom:18px;}
.site-footer a{color:rgba(255,255,255,.72);font-size:14.5px;}
.site-footer a:hover{color:var(--c-sand);}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:18px;}
.footer-brand .brand-mark{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);}
.footer-brand .brand-name{color:#fff;}
.footer-brand .brand-sub{color:rgba(255,255,255,.5);}
.footer-desc{font-size:14.5px;line-height:1.9;color:rgba(255,255,255,.66);max-width:320px;}
.footer-list{display:flex;flex-direction:column;gap:11px;}
.footer-bottom{
  margin-top:52px;padding-top:24px;
  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,.5);
}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  :root{--sp-section:88px;}
  .hero-card img{height:250px;}
}
@media (max-width:991px){
  :root{--sp-section:72px;}
  .nav-chips{display:none;}
  .nav-cta{display:none;}
  .nav-toggle{display:inline-flex;}
  .pain-wrap,.solution-wrap,.feature-grid{grid-template-columns:1fr;gap:36px;}
  .solution-media{position:static;}
  .pain-media img{height:320px;}
  .metrics{grid-template-columns:repeat(2,1fr);}
  .news-list{grid-template-columns:repeat(2,1fr);}
  .news-card--feature{grid-column:span 2;}
  .quote-grid{grid-template-columns:1fr;}
  .quote-card.offset{margin-top:0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .hero{padding:60px 0 70px;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .hero-card img{height:210px;}
  .hero-mini{grid-template-columns:repeat(3,1fr);}
  .metric strong{font-size:32px;}
  .quote-card{padding:24px 22px;}
  .cta-band{padding:70px 0;}
}
@media (max-width:575px){
  :root{--sp-section:56px;}
  .site-container{padding-left:16px;padding-right:16px;}
  .hero{padding:44px 0 56px;}
  .hero-actions .btn-main,.hero-actions .btn-ghost{width:100%;}
  .metrics{grid-template-columns:repeat(2,1fr);gap:12px;}
  .metric{padding:20px 16px;}
  .metric strong{font-size:26px;}
  .news-list{grid-template-columns:1fr;}
  .news-card--feature{grid-column:span 1;}
  .feature-body{padding:20px 18px 22px;}
  .step{padding-left:0;padding-bottom:22px;}
  .step::before{display:none;}
  .step-num{position:static;margin-bottom:12px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .pain-item{padding:18px 18px;}
  .accordion-button{padding:16px 18px;font-size:15.5px;}
  .accordion-body{padding:4px 18px 20px;}
}

/* roulang page: article */
:root{
  --brand:#1E6B5C;
  --brand-dark:#17584C;
  --brand-soft:#E7F0ED;
  --ink:#16231F;
  --sand:#D99A4E;
  --clay:#B7642F;
  --bg:#F6F7F4;
  --bg-alt:#EDF0EC;
  --card:#FFFFFF;
  --text:#1B2422;
  --text-2:#5C6A66;
  --text-3:#8A9691;
  --line:#DCE3DE;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:18px;
  --r-pill:999px;
  --sh-1:0 6px 22px rgba(22,35,31,.06);
  --sh-2:0 12px 30px rgba(22,35,31,.10);
  --container:1200px;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system, BlinkMacSystemFont, "Noto Sans SC", "HarmonyOS Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size:17px;
  line-height:1.85;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .18s ease, border-color .18s ease;}
a:hover{color:var(--brand-dark);}
h1,h2,h3,h4,h5{color:var(--ink);font-weight:700;letter-spacing:.01em;margin:0;}
p{margin:0 0 1.1em;}
ul,ol{margin:0 0 1.1em;padding-left:1.25em;}
li{margin-bottom:.5em;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
.site-container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}

/* ============ header / nav ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(246,247,244,.97);
  border-bottom:1px solid transparent;
  transition:border-color .2s ease, box-shadow .2s ease, background .2s ease;
}
.site-header.is-scrolled{
  border-bottom-color:var(--line);
  box-shadow:0 6px 18px rgba(22,35,31,.06);
  background:rgba(255,255,255,.98);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  min-height:74px;
}
.brand{
  display:flex;
  align-items:center;
  gap:11px;
  flex-shrink:0;
}
.brand-mark{
  width:38px;height:38px;
  border-radius:11px;
  background:linear-gradient(140deg,var(--brand) 0%, #2C8874 100%);
  color:#fff;
  font-weight:700;
  font-size:14px;
  letter-spacing:.06em;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px rgba(30,107,92,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-name{font-size:17px;font-weight:700;color:var(--ink);letter-spacing:.02em;}
.brand-sub{font-size:11.5px;color:var(--text-3);letter-spacing:.03em;}
.nav-chips{
  display:flex;
  align-items:center;
  gap:6px;
  background:var(--bg-alt);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  padding:5px;
}
.chip{
  display:inline-block;
  padding:8px 18px;
  border-radius:var(--r-pill);
  font-size:14.5px;
  font-weight:600;
  color:var(--text-2);
  white-space:nowrap;
  transition:background .18s ease, color .18s ease, box-shadow .18s ease;
}
.chip:hover{background:#fff;color:var(--brand);}
.chip.active{
  background:var(--brand);
  color:#fff;
  box-shadow:0 4px 14px rgba(30,107,92,.26);
}
.chip.active:hover{background:var(--brand-dark);color:#fff;}
.header-cta{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:var(--brand);
  color:#fff;
  font-weight:600;
  font-size:14.5px;
  padding:11px 20px;
  border-radius:10px;
  border:1px solid var(--brand);
  white-space:nowrap;
  transition:background .18s ease, transform .18s ease, box-shadow .18s ease;
}
.header-cta:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:0 8px 20px rgba(30,107,92,.24);}
.nav-toggle{
  width:44px;height:44px;
  border-radius:12px;
  border:1px solid var(--line);
  background:#fff;
  color:var(--ink);
  display:none;
  align-items:center;
  justify-content:center;
  font-size:17px;
}
.mobile-panel .offcanvas-header{border-bottom:1px solid var(--line);}
.mobile-panel .offcanvas-title{font-size:16px;font-weight:700;}
.mobile-nav-list{display:flex;flex-direction:column;gap:8px;padding:18px 0;}
.mobile-nav-list .chip{
  display:block;
  padding:13px 18px;
  border-radius:var(--r-md);
  background:var(--bg-alt);
  font-size:15px;
}
.mobile-nav-list .chip.active{background:var(--brand);color:#fff;}
.mobile-panel-foot{
  margin-top:auto;
  padding-top:18px;
  border-top:1px solid var(--line);
}
.mobile-panel-foot .header-cta{width:100%;justify-content:center;}

/* ============ article hero ============ */
.article-hero{
  position:relative;
  background-image:linear-gradient(115deg, rgba(22,35,31,.90) 0%, rgba(30,107,92,.80) 58%, rgba(30,107,92,.55) 100%), url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  color:#fff;
  padding:52px 0 56px;
}
.article-hero h1{
  color:#fff;
  font-size:clamp(26px, 3.4vw, 40px);
  line-height:1.32;
  max-width:900px;
  margin:14px 0 18px;
}
.breadcrumb-line{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13.5px;
  color:rgba(255,255,255,.75);
  margin-bottom:6px;
}
.breadcrumb-line a{color:rgba(255,255,255,.86);}
.breadcrumb-line a:hover{color:var(--sand);}
.breadcrumb-line .sep{color:rgba(255,255,255,.45);}
.breadcrumb-line .current{color:rgba(255,255,255,.62);}
.hero-tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  background:rgba(217,154,78,.20);
  border:1px solid rgba(217,154,78,.55);
  color:#F3D6AE;
  font-size:12.5px;
  font-weight:600;
  padding:5px 14px;
  border-radius:var(--r-pill);
  letter-spacing:.02em;
}
.article-meta{
  display:flex;
  flex-wrap:wrap;
  gap:20px;
  font-size:13.5px;
  color:rgba(255,255,255,.74);
}
.article-meta span{display:inline-flex;align-items:center;gap:7px;}
.article-meta i{color:var(--sand);}

/* ============ layout ============ */
.page-body{padding:56px 0 88px;}
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 306px;
  gap:44px;
  align-items:start;
}
.article-main{min-width:0;}

/* ============ content ============ */
.article-content{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
  padding:44px 46px 38px;
  max-width:100%;
}
.article-content>*:first-child{margin-top:0;}
.article-content h2{
  position:relative;
  font-size:clamp(21px, 2.3vw, 27px);
  line-height:1.45;
  margin:2.1em 0 .8em;
  padding-left:16px;
}
.article-content h2::before{
  content:"";
  position:absolute;
  left:0;top:.28em;
  width:4px;height:1em;
  border-radius:3px;
  background:var(--brand);
}
.article-content h3{
  font-size:20px;
  line-height:1.5;
  margin:1.7em 0 .6em;
  color:var(--ink);
}
.article-content h4{
  font-size:17.5px;
  line-height:1.5;
  margin:1.4em 0 .5em;
  color:var(--text);
}
.article-content p{
  font-size:17px;
  line-height:1.9;
  color:#243029;
  margin-bottom:1.1em;
}
.article-content ul,.article-content ol{padding-left:1.3em;}
.article-content li{line-height:1.85;color:#243029;}
.article-content img{
  border-radius:var(--r-md);
  margin:1.4em auto .6em;
  width:100%;
  object-fit:cover;
}
.article-content blockquote{
  margin:1.5em 0;
  padding:16px 22px;
  background:#F1F5F2;
  border-left:4px solid var(--brand);
  border-radius:0 var(--r-md) var(--r-md) 0;
  color:#2B3A35;
}
.article-content blockquote p:last-child{margin-bottom:0;}
.article-content a{
  color:var(--brand);
  border-bottom:1px solid rgba(30,107,92,.28);
}
.article-content a:hover{color:var(--sand);border-bottom-color:var(--sand);}
.article-content table{
  width:100%;
  border-collapse:collapse;
  margin:1.5em 0;
  font-size:15.5px;
  border:1px solid var(--line);
  border-radius:var(--r-md);
  overflow:hidden;
}
.article-content th,.article-content td{
  border:1px solid var(--line);
  padding:11px 14px;
  text-align:left;
}
.article-content th{background:var(--bg-alt);font-weight:600;color:var(--ink);}
.article-content tbody tr:nth-child(even){background:#FAFBFA;}
.article-content code{
  background:var(--bg-alt);
  padding:2px 7px;
  border-radius:6px;
  font-size:14.5px;
  color:var(--brand-dark);
}
.article-content hr{border:none;border-top:1px solid var(--line);margin:2em 0;}

.empty-state{
  text-align:center;
  padding:56px 24px 48px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
}
.empty-icon{
  width:62px;height:62px;
  margin:0 auto 18px;
  border-radius:18px;
  background:var(--brand-soft);
  color:var(--brand);
  display:flex;align-items:center;justify-content:center;
  font-size:24px;
}
.empty-state h2{font-size:23px;margin-bottom:10px;}
.empty-state p{color:var(--text-2);font-size:15.5px;max-width:460px;margin:0 auto 22px;}

/* ============ buttons ============ */
.btn-primary-c{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:var(--brand);
  color:#fff;
  font-weight:600;
  font-size:15px;
  padding:12px 24px;
  border-radius:10px;
  border:1px solid var(--brand);
  transition:background .18s ease, transform .18s ease, box-shadow .18s ease;
}
.btn-primary-c:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(30,107,92,.24);}
.btn-ghost-c{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:transparent;
  color:var(--brand);
  font-weight:600;
  font-size:15px;
  padding:12px 22px;
  border-radius:10px;
  border:1px solid rgba(30,107,92,.42);
  transition:background .18s ease, border-color .18s ease, transform .18s ease;
}
.btn-ghost-c:hover{background:var(--brand-soft);border-color:var(--brand);color:var(--brand-dark);transform:translateY(-1px);}
.btn-sand{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:var(--sand);
  color:#2A1B07;
  font-weight:600;
  font-size:15px;
  padding:12px 24px;
  border-radius:10px;
  border:1px solid var(--sand);
  transition:background .18s ease, transform .18s ease, box-shadow .18s ease;
}
.btn-sand:hover{background:#C98A3F;color:#2A1B07;transform:translateY(-1px);box-shadow:0 10px 22px rgba(217,154,78,.32);}

/* ============ sidebar ============ */
.side-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
  padding:24px 22px;
  margin-bottom:20px;
}
.side-card h3{
  font-size:16px;
  margin-bottom:14px;
  padding-left:12px;
  position:relative;
}
.side-card h3::before{
  content:"";
  position:absolute;left:0;top:.3em;
  width:3px;height:.9em;
  border-radius:2px;
  background:var(--brand);
}
.side-links{list-style:none;padding:0;margin:0;}
.side-links li{margin-bottom:2px;}
.side-links a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding:11px 12px;
  border-radius:10px;
  font-size:14.8px;
  color:var(--text-2);
  font-weight:500;
  transition:background .18s ease,color .18s ease;
}
.side-links a:hover{background:var(--brand-soft);color:var(--brand-dark);}
.side-links i{color:var(--text-3);font-size:12px;}
.side-note{
  font-size:14px;
  color:var(--text-2);
  line-height:1.8;
  margin:0 0 16px;
}
.side-figure{border-radius:var(--r-md);overflow:hidden;margin-bottom:14px;}
.side-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.side-sticky{position:sticky;top:98px;}

/* ============ related ============ */
.section-head{margin-bottom:30px;}
.section-head h2{
  font-size:clamp(22px,2.5vw,29px);
  line-height:1.4;
}
.section-head p{color:var(--text-2);font-size:15.5px;margin:10px 0 0;}
.related-wrap{margin-top:56px;}
.related-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:22px;
}
.rel-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--sh-1);
  display:flex;
  flex-direction:column;
  transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.rel-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(30,107,92,.30);}
.rel-card figure{margin:0;overflow:hidden;}
.rel-card img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .4s ease;}
.rel-card:hover img{transform:scale(1.04);}
.rel-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1;}
.tag-chip{
  display:inline-block;
  align-self:flex-start;
  background:var(--brand-soft);
  color:var(--brand-dark);
  font-size:12.5px;
  font-weight:600;
  padding:4px 12px;
  border-radius:var(--r-pill);
  margin-bottom:12px;
}
.rel-body h3{
  font-size:17.5px;
  line-height:1.5;
  margin-bottom:10px;
}
.rel-body p{
  font-size:14.5px;
  color:var(--text-2);
  line-height:1.8;
  margin-bottom:16px;
  display:-webkit-box;
  -webkit-line-clamp:3;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.rel-foot{
  margin-top:auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-size:13px;
  color:var(--text-3);
  padding-top:14px;
  border-top:1px solid var(--line);
}
.rel-foot .more{color:var(--brand);font-weight:600;font-size:13.5px;}
.back-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px;}

/* ============ FAQ ============ */
.faq-section{padding:78px 0 0;}
.faq-accordion .accordion-item{
  border:1px solid var(--line);
  border-radius:var(--r-md) !important;
  margin-bottom:12px;
  overflow:hidden;
  background:var(--card);
  box-shadow:var(--sh-1);
}
.faq-accordion .accordion-button{
  font-size:16.5px;
  font-weight:600;
  color:var(--ink);
  background:var(--card);
  padding:18px 22px 18px 24px;
  border-left:3px solid transparent;
  box-shadow:none;
}
.faq-accordion .accordion-button:not(.collapsed){
  color:var(--brand-dark);
  background:#F3F8F6;
  border-left-color:var(--brand);
}
.faq-accordion .accordion-button:focus{box-shadow:0 0 0 2px rgba(30,107,92,.35);}
.faq-accordion .accordion-button::after{
  background-image:none;
  content:"+";
  font-size:20px;
  font-weight:600;
  color:var(--brand);
  width:auto;height:auto;
  display:flex;align-items:center;justify-content:center;
  transform:none;
  transition:transform .2s ease;
  line-height:1;
}
.faq-accordion .accordion-button:not(.collapsed)::after{content:"–";transform:none;}
.faq-accordion .accordion-body{
  padding:4px 24px 22px;
  color:var(--text-2);
  font-size:15.5px;
  line-height:1.85;
}

/* ============ CTA ============ */
.cta-band{
  margin-top:80px;
  background:linear-gradient(125deg,#16231F 0%, #1E6B5C 100%);
  border-radius:22px;
  padding:56px 52px;
  color:#fff;
  display:grid;
  grid-template-columns:minmax(0,1.5fr) minmax(0,.9fr);
  gap:36px;
  align-items:center;
}
.cta-band h2{color:#fff;font-size:clamp(22px,2.6vw,30px);line-height:1.4;margin-bottom:14px;}
.cta-band p{color:rgba(255,255,255,.80);font-size:15.5px;margin:0;max-width:560px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end;}

/* ============ footer ============ */
.site-footer{
  background:var(--ink);
  color:rgba(255,255,255,.72);
  padding:66px 0 26px;
  margin-top:96px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:38px;
}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:16px;}
.footer-brand .brand-mark{background:linear-gradient(140deg,#2C8874,#1E6B5C);}
.footer-brand .brand-name{color:#fff;font-size:17px;}
.footer-brand .brand-sub{color:rgba(255,255,255,.55);}
.footer-desc{font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.66);margin:0;max-width:360px;}
.site-footer h4{color:#fff;font-size:15.5px;margin-bottom:16px;font-weight:600;}
.footer-list{list-style:none;padding:0;margin:0;}
.footer-list li{margin-bottom:11px;font-size:14.5px;}
.footer-list a{color:rgba(255,255,255,.74);}
.footer-list a:hover{color:var(--sand);}
.footer-list span{color:rgba(255,255,255,.6);font-size:14px;}
.footer-bottom{
  margin-top:44px;
  padding-top:22px;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  justify-content:space-between;
  font-size:13.5px;
  color:rgba(255,255,255,.55);
}

/* ============ responsive ============ */
@media (max-width:1199px){
  .article-layout{grid-template-columns:minmax(0,1fr) 280px;gap:32px;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px;}
}
@media (max-width:991px){
  .nav-chips,.header-cta.desk{display:none;}
  .nav-toggle{display:flex;}
  .article-layout{grid-template-columns:minmax(0,1fr);}
  .side-sticky{position:static;}
  .article-side{margin-top:8px;}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cta-band{grid-template-columns:minmax(0,1fr);padding:44px 34px;}
  .cta-actions{justify-content:flex-start;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
  .article-content{padding:36px 32px 32px;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .site-container{padding:0 20px;}
  .article-hero{padding:38px 0 42px;}
  .page-body{padding:40px 0 64px;}
  .article-content{padding:28px 22px 26px;border-radius:var(--r-md);}
  .article-content p{font-size:16px;}
  .related-grid{grid-template-columns:minmax(0,1fr);}
  .faq-section{padding-top:58px;}
  .cta-band{padding:36px 24px;border-radius:18px;}
  .site-footer{padding:52px 0 22px;margin-top:70px;}
}
@media (max-width:575px){
  .site-container{padding:0 16px;}
  .brand-sub{display:none;}
  .header-inner{min-height:66px;}
  .article-hero h1{font-size:24px;}
  .article-meta{gap:14px;font-size:13px;}
  .btn-primary-c,.btn-ghost-c,.btn-sand{width:100%;justify-content:center;}
  .cta-actions{width:100%;}
  .back-actions{flex-direction:column;}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:26px;}
}

/* roulang page: category1 */
:root{
  --brand:#1E6B5C;
  --brand-dark:#17584C;
  --brand-light:#E7F0ED;
  --ink:#16231F;
  --text:#1B2422;
  --muted:#5C6A66;
  --weak:#8A9691;
  --line:#DCE3DE;
  --bg:#F6F7F4;
  --bg-alt:#EDF0EC;
  --card:#FFFFFF;
  --gold:#D99A4E;
  --gold-light:#FBF1E3;
  --clay:#B7642F;
  --r-s:8px;
  --r-m:12px;
  --r-l:18px;
  --r-pill:999px;
  --shadow:0 6px 22px rgba(22,35,31,.06);
  --shadow-hover:0 12px 30px rgba(22,35,31,.10);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Noto Sans SC","HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  font-size:17px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand);text-decoration:none;transition:color 180ms ease;}
a:hover{color:var(--brand-dark);}
p{margin:0 0 1.1em;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:.01em;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}

.site-container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
.section{padding:96px 0;}
.section-alt{background:var(--bg-alt);}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head h2{font-size:clamp(22px,2.6vw,32px);line-height:1.35;position:relative;padding-left:16px;}
.section-head h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;border-radius:2px;background:var(--brand);
}
.section-head p{margin-top:16px;color:var(--muted);font-size:16px;margin-bottom:0;}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:600;letter-spacing:.06em;
  color:var(--brand);background:var(--brand-light);border-radius:var(--r-pill);
  padding:5px 14px;margin-bottom:14px;
}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(246,247,244,.97);
  border-bottom:1px solid transparent;
  transition:box-shadow 180ms ease,border-color 180ms ease;
}
.site-header.is-scrolled{
  border-bottom-color:var(--line);
  box-shadow:0 4px 18px rgba(22,35,31,.06);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  min-height:74px;
}
.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto;}
.brand-mark{
  width:40px;height:40px;border-radius:12px;
  background:var(--brand);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:700;letter-spacing:.04em;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-name{font-size:17px;font-weight:700;color:var(--ink);}
.brand-sub{font-size:12px;color:var(--weak);}
.nav-chips{
  display:flex;align-items:center;gap:6px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-pill);
  padding:5px;box-shadow:var(--shadow);
}
.chip{
  display:inline-block;padding:8px 18px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;color:var(--muted);white-space:nowrap;
  transition:background 180ms ease,color 180ms ease;
}
.chip:hover{background:var(--brand-light);color:var(--brand-dark);}
.chip.active{background:var(--brand);color:#fff;}
.header-actions{display:flex;align-items:center;gap:12px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:10px;font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;
  transition:background 180ms ease,color 180ms ease,border-color 180ms ease,transform 180ms ease,box-shadow 180ms ease;
}
.btn-brand{background:var(--brand);color:#fff;border-color:var(--brand);}
.btn-brand:hover{background:var(--brand-dark);border-color:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow);}
.btn-ghost{background:transparent;color:var(--brand);border-color:var(--brand);}
.btn-ghost:hover{background:var(--brand-light);color:var(--brand-dark);}
.btn-on-dark{background:#fff;color:var(--ink);border-color:#fff;}
.btn-on-dark:hover{background:var(--gold);border-color:var(--gold);color:#16231F;transform:translateY(-1px);}
.btn-outline-dark{background:transparent;color:#fff;border-color:rgba(255,255,255,.55);}
.btn-outline-dark:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff;}
.btn-sm{padding:10px 18px;font-size:14px;}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:12px;
  background:#fff;flex-direction:column;align-items:center;justify-content:center;gap:4px;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform 180ms ease,opacity 180ms ease;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}
.mobile-nav{
  display:none;padding:8px 0 20px;
  border-top:1px solid var(--line);
  background:rgba(246,247,244,.99);
}
.mobile-nav.open{display:block;}
.mobile-nav .site-container{display:flex;flex-direction:column;gap:8px;}
.mobile-nav .chip{display:block;text-align:center;background:#fff;border:1px solid var(--line);padding:12px 16px;}
.mobile-nav .chip.active{background:var(--brand);color:#fff;border-color:var(--brand);}
.mobile-nav .btn{margin-top:8px;}

/* ---------- page hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  background:var(--ink);
  padding:76px 0 70px;
}
.page-hero-bg{
  position:absolute;inset:0;
  background-size:cover;background-position:center;
  opacity:.30;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(115deg,rgba(22,35,31,.94) 0%,rgba(22,35,31,.72) 52%,rgba(30,107,92,.55) 100%);
}
.page-hero .hero-inner{position:relative;z-index:2;max-width:820px;}
.crumb{font-size:13.5px;color:rgba(255,255,255,.68);margin-bottom:18px;display:flex;flex-wrap:wrap;gap:8px;align-items:center;}
.crumb a{color:rgba(255,255,255,.86);}
.crumb a:hover{color:var(--gold);}
.crumb .sep{opacity:.5;}
.crumb .current{color:rgba(255,255,255,.6);}
.hero-tag{
  display:inline-block;font-size:12.5px;font-weight:600;
  color:#F6E4CB;background:rgba(217,154,78,.22);
  border:1px solid rgba(217,154,78,.45);
  border-radius:var(--r-pill);padding:5px 14px;margin-bottom:18px;
}
.page-hero h1{
  color:#fff;font-size:clamp(28px,4vw,44px);line-height:1.25;letter-spacing:.01em;
  margin-bottom:18px;
}
.page-hero .hero-lead{
  color:rgba(255,255,255,.84);font-size:17px;line-height:1.85;max-width:700px;margin-bottom:28px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- layout ---------- */
.layout-aside{
  display:grid;
  grid-template-columns:264px minmax(0,1fr);
  gap:56px;
  align-items:start;
}
.side-toc{position:sticky;top:100px;}
.toc-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-l);
  padding:24px;box-shadow:var(--shadow);
}
.toc-title{
  font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--weak);
  text-transform:uppercase;margin-bottom:14px;
}
.toc-list a{
  display:block;padding:9px 14px;font-size:15px;color:var(--muted);
  border-left:2px solid var(--line);border-radius:0 10px 10px 0;
  transition:background 180ms ease,color 180ms ease,border-color 180ms ease;
}
.toc-list a:hover{background:var(--brand-light);color:var(--brand-dark);border-left-color:var(--brand);}
.toc-list a.is-active{background:var(--brand-light);color:var(--brand-dark);border-left-color:var(--brand);font-weight:600;}
.side-note{
  margin-top:18px;background:var(--gold-light);border:1px solid #EFDDC2;
  border-radius:var(--r-l);padding:22px;
}
.side-note h3{font-size:16px;margin-bottom:8px;}
.side-note p{font-size:14px;color:var(--muted);margin-bottom:16px;line-height:1.75;}
.side-note .btn{width:100%;}

/* ---------- content blocks ---------- */
.content-block{margin-bottom:64px;}
.content-block:last-child{margin-bottom:0;}
.content-block > h2{
  font-size:clamp(21px,2.3vw,28px);line-height:1.4;
  padding-left:16px;position:relative;margin-bottom:20px;
}
.content-block > h2::before{
  content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:4px;border-radius:2px;background:var(--brand);
}
.lead-para{font-size:17px;color:var(--text);}
.block-intro{color:var(--muted);font-size:16px;margin-bottom:26px;}

.feature-list{display:grid;gap:16px;}
.feature-item{
  display:grid;grid-template-columns:56px minmax(0,1fr);
  gap:18px;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-l);padding:24px 26px;
  transition:box-shadow 180ms ease,transform 180ms ease,border-color 180ms ease;
}
.feature-item:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);border-color:rgba(30,107,92,.3);}
.feature-num{
  width:44px;height:44px;border-radius:12px;background:var(--brand-light);
  color:var(--brand);font-weight:700;font-size:15px;
  display:flex;align-items:center;justify-content:center;
}
.feature-item h3{font-size:18px;line-height:1.5;margin-bottom:8px;}
.feature-item p{font-size:15.5px;color:var(--muted);margin-bottom:10px;}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;}
.tag{
  display:inline-block;font-size:12.5px;font-weight:600;color:var(--brand);
  background:var(--brand-light);border-radius:var(--r-pill);padding:4px 12px;
}
.tag-gold{color:#8A5A17;background:var(--gold-light);}

.figure-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-l);
  overflow:hidden;box-shadow:var(--shadow);
}
.figure-card img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.figure-card figcaption{
  padding:14px 20px;font-size:13px;color:var(--weak);text-align:center;border-top:1px solid var(--line);
}
.split{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:44px;align-items:center;
}
.split.reverse .split-media{order:2;}
.split-body h3{font-size:21px;line-height:1.5;margin-bottom:14px;}
.split-body p{color:var(--muted);font-size:16px;}
.check-list{margin-top:18px;display:grid;gap:10px;}
.check-list li{
  position:relative;padding-left:26px;font-size:15.5px;color:var(--text);
}
.check-list li::before{
  content:"";position:absolute;left:0;top:.62em;width:12px;height:12px;border-radius:4px;
  background:var(--brand-light);border:2px solid var(--brand);
}

.steps{display:grid;gap:20px;position:relative;}
.step{
  display:grid;grid-template-columns:64px minmax(0,1fr);gap:20px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-l);
  padding:26px;transition:box-shadow 180ms ease,transform 180ms ease;
}
.step:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);}
.step-num{
  font-size:26px;font-weight:700;color:var(--gold);line-height:1;
  border-right:1px solid var(--line);padding-right:16px;
}
.step h3{font-size:18px;margin-bottom:8px;}
.step p{font-size:15.5px;color:var(--muted);margin-bottom:0;}

.stat-strip{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-l);
  padding:30px 26px;box-shadow:var(--shadow);
}
.stat-item{text-align:center;border-right:1px solid var(--line);padding:6px 10px;}
.stat-item:last-child{border-right:none;}
.stat-num{font-size:clamp(24px,3vw,34px);font-weight:700;color:var(--brand);line-height:1.2;}
.stat-num.gold{color:var(--gold);}
.stat-label{font-size:13px;color:var(--weak);margin-top:6px;}

/* ---------- faq ---------- */
.faq-accordion .accordion-item{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-l) !important;
  margin-bottom:12px;overflow:hidden;
}
.faq-accordion .accordion-button{
  background:var(--card);color:var(--ink);font-size:16.5px;font-weight:600;
  padding:20px 24px 20px 24px;border:none;box-shadow:none;
  position:relative;
}
.faq-accordion .accordion-button::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;border-radius:2px;background:var(--brand);
}
.faq-accordion .accordion-button:not(.collapsed){color:var(--brand-dark);background:var(--brand-light);}
.faq-accordion .accordion-button:focus{box-shadow:none;border-color:transparent;}
.faq-accordion .accordion-button::after{
  background-image:none;
  content:"+";font-size:20px;font-weight:400;color:var(--brand);
  width:auto;height:auto;transform:none;margin-left:auto;
  transition:transform 180ms ease;
}
.faq-accordion .accordion-button:not(.collapsed)::after{content:"−";color:var(--brand-dark);}
.faq-accordion .accordion-body{
  padding:6px 24px 22px 24px;color:var(--muted);font-size:15.5px;line-height:1.85;
  background:var(--card);
}
.faq-accordion .accordion-body p:last-child{margin-bottom:0;}

/* ---------- cta ---------- */
.cta-band{
  background:var(--ink);border-radius:24px;padding:60px 56px;
  position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-80px;top:-80px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(30,107,92,.55) 0%,rgba(30,107,92,0) 70%);
}
.cta-inner{position:relative;z-index:2;max-width:660px;}
.cta-band h2{color:#fff;font-size:clamp(22px,2.6vw,32px);line-height:1.35;margin-bottom:16px;}
.cta-band p{color:rgba(255,255,255,.78);font-size:16px;margin-bottom:26px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.76);padding:70px 0 26px;margin-top:0;}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;
  padding-bottom:38px;border-bottom:1px solid rgba(255,255,255,.12);
}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:18px;}
.footer-brand .brand-mark{background:var(--brand);}
.footer-brand .brand-name{color:#fff;}
.footer-brand .brand-sub{color:rgba(255,255,255,.55);}
.footer-desc{font-size:15px;line-height:1.85;color:rgba(255,255,255,.68);margin-bottom:0;}
.site-footer h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px;}
.footer-list{display:grid;gap:10px;}
.footer-list li{font-size:14.5px;color:rgba(255,255,255,.68);}
.footer-list a{color:rgba(255,255,255,.72);}
.footer-list a:hover{color:var(--gold);}
.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,.5);
}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .layout-aside{grid-template-columns:228px minmax(0,1fr);gap:38px;}
}
@media (max-width:991px){
  .section{padding:76px 0;}
  .nav-chips{display:none;}
  .nav-toggle{display:flex;}
  .header-actions .btn{display:none;}
  .layout-aside{grid-template-columns:minmax(0,1fr);gap:40px;}
  .side-toc{position:static;}
  .toc-card{padding:20px;}
  .toc-list{display:flex;flex-wrap:wrap;gap:8px;}
  .toc-list a{border-left:none;border:1px solid var(--line);border-radius:var(--r-pill);padding:8px 16px;font-size:14px;}
  .split{grid-template-columns:minmax(0,1fr);gap:28px;}
  .split.reverse .split-media{order:0;}
  .stat-strip{grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;}
  .stat-item:nth-child(2){border-right:none;}
  .stat-item:nth-child(1),.stat-item:nth-child(2){border-bottom:1px solid var(--line);padding-bottom:18px;}
  .cta-band{padding:48px 32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  .section{padding:60px 0;}
  .page-hero{padding:56px 0 52px;}
  .feature-item{grid-template-columns:44px minmax(0,1fr);gap:14px;padding:20px;}
  .feature-num{width:38px;height:38px;border-radius:10px;font-size:14px;}
  .step{grid-template-columns:48px minmax(0,1fr);gap:16px;padding:22px;}
  .step-num{font-size:22px;padding-right:12px;}
}
@media (max-width:575px){
  .site-container{padding-left:16px;padding-right:16px;}
  body{font-size:16px;}
  .brand-sub{display:none;}
  .page-hero h1{font-size:26px;}
  .hero-actions .btn{width:100%;}
  .stat-strip{grid-template-columns:1fr;gap:18px;padding:24px 20px;}
  .stat-item{border-right:none;border-bottom:1px solid var(--line);padding-bottom:16px;}
  .stat-item:last-child{border-bottom:none;padding-bottom:0;}
  .cta-band{padding:40px 22px;border-radius:18px;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .faq-accordion .accordion-button{padding:18px 18px 18px 20px;font-size:15.5px;}
  .faq-accordion .accordion-body{padding:4px 18px 20px 20px;}
}

/* roulang page: category2 */
:root{
  --brand:#1E6B5C;
  --brand-dark:#17584C;
  --brand-soft:#E7F0ED;
  --brand-line:rgba(30,107,92,.30);
  --ink:#16231F;
  --ink-2:#20302B;
  --gold:#D99A4E;
  --gold-soft:#FBF1E4;
  --clay:#B7642F;
  --bg:#F6F7F4;
  --bg-alt:#EDF0EC;
  --card:#FFFFFF;
  --text:#1B2422;
  --muted:#5C6A66;
  --faint:#8A9691;
  --line:#DCE3DE;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:18px;
  --r-pill:999px;
  --sh-1:0 6px 22px rgba(22,35,31,.06);
  --sh-2:0 12px 30px rgba(22,35,31,.10);
  --sec:96px;
  --font:-apple-system, BlinkMacSystemFont, "Noto Sans SC", "HarmonyOS Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
}
*{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;}
a{color:var(--brand);text-decoration:none;transition:color .18s ease, border-color .18s ease;}
a:hover{color:var(--brand-dark);}
p{margin:0 0 1.1em;}
h1,h2,h3,h4{margin:0 0 .6em;color:var(--ink);font-weight:700;letter-spacing:.01em;}
h1{font-size:clamp(28px,4vw,44px);line-height:1.25;}
h2{font-size:clamp(22px,2.6vw,32px);line-height:1.35;margin-top:0;}
h3{font-size:22px;line-height:1.45;font-weight:600;}
h4{font-size:18px;line-height:1.5;font-weight:600;}
ul,ol{padding-left:1.1em;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}

.site-container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
.narrow{max-width:840px;margin-left:auto;margin-right:auto;}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:#FFFFFF;
  border-bottom:1px solid transparent;
  transition:box-shadow .2s ease, border-color .2s ease;
}
.site-header.is-scrolled{
  border-bottom-color:var(--line);
  box-shadow:0 4px 18px rgba(22,35,31,.06);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:24px;
  min-height:74px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.logo-mark{
  width:38px;height:38px;
  border-radius:12px;
  background:var(--brand);
  color:#fff;
  font-size:15px;
  font-weight:700;
  letter-spacing:.02em;
  display:flex;align-items:center;justify-content:center;
}
.logo-text{
  font-size:18px;
  font-weight:700;
  color:var(--ink);
  letter-spacing:.01em;
}
.nav-chips{
  display:flex;
  align-items:center;
  gap:4px;
  background:var(--bg-alt);
  border-radius:var(--r-pill);
  padding:5px;
  margin-left:auto;
}
.chip{
  display:inline-block;
  padding:8px 18px;
  border-radius:var(--r-pill);
  font-size:14px;
  font-weight:600;
  color:var(--muted);
  white-space:nowrap;
  transition:background .18s ease,color .18s ease,transform .18s ease;
}
.chip:hover{
  color:var(--brand);
  background:rgba(255,255,255,.75);
}
.chip.active{
  background:var(--brand);
  color:#fff;
}
.chip.active:hover{background:var(--brand-dark);color:#fff;}
.header-actions{
  display:flex;
  align-items:center;
  gap:12px;
  flex-shrink:0;
}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--line);
  background:#fff;
  border-radius:var(--r-md);
  color:var(--ink);
  font-size:17px;
  cursor:pointer;
  align-items:center;
  justify-content:center;
}
.mobile-panel{
  display:none;
  border-top:1px solid var(--line);
  background:#fff;
  padding:16px 0 22px;
}
.mobile-panel.open{display:block;}
.mobile-panel .chip{
  display:block;
  text-align:center;
  padding:12px 16px;
  background:var(--bg-alt);
  margin-bottom:8px;
}
.mobile-panel .chip.active{background:var(--brand);color:#fff;}
.mobile-panel .btn{width:100%;margin-top:8px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 22px;
  border-radius:10px;
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:background .18s ease, color .18s ease, transform .18s ease, border-color .18s ease, box-shadow .18s ease;
}
.btn-sm{padding:9px 18px;font-size:14px;}
.btn-primary{
  background:var(--brand);
  color:#fff;
  border-color:var(--brand);
}
.btn-primary:hover{
  background:var(--brand-dark);
  border-color:var(--brand-dark);
  color:#fff;
  transform:translateY(-1px);
  box-shadow:0 8px 20px rgba(30,107,92,.22);
}
.btn-outline{
  background:transparent;
  color:var(--brand);
  border-color:var(--brand-line);
}
.btn-outline:hover{
  background:var(--brand-soft);
  color:var(--brand-dark);
  border-color:var(--brand);
}
.btn-light{
  background:#fff;
  color:var(--ink);
  border-color:#fff;
}
.btn-light:hover{background:var(--gold-soft);color:var(--ink);}
.btn-ghost-light{
  background:transparent;
  color:#fff;
  border-color:rgba(255,255,255,.45);
}
.btn-ghost-light:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff;}

/* ============ 通用板块 ============ */
.section{padding:var(--sec) 0;}
.section-alt{background:var(--bg-alt);}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-block;
  font-size:13px;
  font-weight:600;
  color:var(--brand);
  background:var(--brand-soft);
  border-radius:var(--r-pill);
  padding:5px 14px;
  margin-bottom:16px;
  letter-spacing:.02em;
}
.section-head p{
  color:var(--muted);
  font-size:16px;
  margin-bottom:0;
}

/* ============ Hero ============ */
.cat-hero{
  position:relative;
  background-image:linear-gradient(100deg, rgba(246,247,244,.96) 0%, rgba(246,247,244,.88) 48%, rgba(237,240,236,.72) 100%),
                   url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center right;
  border-bottom:1px solid var(--line);
}
.cat-hero-inner{
  position:relative;
  padding:64px 0 68px;
  display:grid;
  grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);
  gap:52px;
  align-items:center;
}
.cat-hero h1{margin-bottom:18px;}
.cat-hero .hero-lead{
  font-size:17px;
  color:var(--muted);
  max-width:620px;
  margin-bottom:26px;
}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;}
.hero-facts{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:26px;
}
.fact-pill{
  display:inline-flex;
  align-items:center;
  gap:7px;
  font-size:13px;
  font-weight:600;
  color:var(--muted);
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  padding:6px 14px;
}
.fact-pill i{color:var(--gold);}
.hero-media{
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--sh-2);
  border:1px solid rgba(220,227,222,.9);
  background:#fff;
}
.hero-media img{width:100%;height:268px;object-fit:cover;}
.breadcrumb-mini{
  font-size:13px;
  color:var(--faint);
  margin-bottom:16px;
}
.breadcrumb-mini a{color:var(--faint);}
.breadcrumb-mini a:hover{color:var(--brand);}
.breadcrumb-mini span{margin:0 8px;}

/* ============ 筛选条 ============ */
.filter-bar{
  position:sticky;
  top:74px;
  z-index:1010;
  background:rgba(246,247,244,.94);
  backdrop-filter:saturate(140%) blur(4px);
  border-bottom:1px solid var(--line);
}
.filter-inner{
  display:flex;
  align-items:center;
  gap:10px;
  padding:14px 0;
  overflow-x:auto;
  scrollbar-width:none;
}
.filter-inner::-webkit-scrollbar{display:none;}
.filter-chip{
  flex:0 0 auto;
  border:1px solid var(--line);
  background:#fff;
  color:var(--muted);
  font-size:14px;
  font-weight:600;
  padding:8px 18px;
  border-radius:var(--r-pill);
  cursor:pointer;
  transition:all .18s ease;
}
.filter-chip:hover{border-color:var(--brand-line);color:var(--brand);}
.filter-chip.active{background:var(--brand);border-color:var(--brand);color:#fff;}
.filter-count{
  margin-left:auto;
  flex:0 0 auto;
  font-size:13px;
  color:var(--faint);
  padding-left:12px;
  display:none;
}

/* ============ 交错图文 ============ */
.split{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:56px;
  align-items:center;
}
.split + .split{margin-top:76px;}
.split.reverse .split-media{order:2;}
.split-media{
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--sh-1);
  background:#fff;
  transition:box-shadow .2s ease, transform .2s ease;
}
.split-media:hover{box-shadow:var(--sh-2);transform:translateY(-2px);}
.split-media img{width:100%;height:300px;object-fit:cover;}
.split-body h3{margin-bottom:12px;}
.split-body p{color:var(--muted);}
.step-list{list-style:none;padding:0;margin:18px 0 0;}
.step-list li{
  position:relative;
  padding-left:34px;
  margin-bottom:12px;
  color:var(--muted);
  font-size:15px;
}
.step-list li::before{
  content:"";
  position:absolute;
  left:0;top:9px;
  width:18px;height:18px;
  border-radius:50%;
  background:var(--brand-soft);
  border:2px solid var(--brand);
}
.step-list li strong{color:var(--ink);font-weight:600;}

/* ============ 卡片网格 ============ */
.grid-3{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.card-item{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:16px;
  overflow:hidden;
  display:flex;
  flex-direction:column;
  transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.card-item:hover{
  transform:translateY(-2px);
  box-shadow:var(--sh-2);
  border-color:var(--brand-line);
}
.card-thumb{position:relative;overflow:hidden;}
.card-thumb img{width:100%;height:172px;object-fit:cover;transition:transform .3s ease;}
.card-item:hover .card-thumb img{transform:scale(1.03);}
.card-body{
  padding:22px 24px 24px;
  display:flex;
  flex-direction:column;
  flex:1;
}
.card-tag{
  display:inline-block;
  align-self:flex-start;
  font-size:12px;
  font-weight:600;
  color:var(--brand);
  background:var(--brand-soft);
  border-radius:var(--r-pill);
  padding:4px 12px;
  margin-bottom:12px;
}
.card-tag.gold{color:#96661F;background:var(--gold-soft);}
.card-body h4{margin-bottom:10px;font-size:18px;}
.card-body p{
  color:var(--muted);
  font-size:14.5px;
  line-height:1.75;
  margin-bottom:16px;
}
.card-link{
  margin-top:auto;
  font-size:14px;
  font-weight:600;
  color:var(--brand);
  display:inline-flex;
  align-items:center;
  gap:6px;
}
.card-link:hover{color:var(--gold);}
.card-link i{font-size:12px;transition:transform .18s ease;}
.card-link:hover i{transform:translateX(3px);}
.card-item.is-hidden{display:none;}

/* ============ 检查清单 / 数据条 ============ */
.check-strip{
  background:var(--ink);
  border-radius:var(--r-lg);
  padding:48px 44px;
  color:#fff;
}
.check-strip h2{color:#fff;margin-bottom:10px;}
.check-strip > p{color:rgba(255,255,255,.72);max-width:720px;margin-bottom:32px;}
.check-grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:20px;
}
.check-cell{
  border:1px solid rgba(255,255,255,.16);
  border-radius:14px;
  padding:22px 20px;
  background:rgba(255,255,255,.03);
}
.check-cell .num{
  font-size:26px;
  font-weight:700;
  color:var(--gold);
  line-height:1.2;
  margin-bottom:6px;
  display:block;
}
.check-cell .label{
  font-size:13px;
  color:rgba(255,255,255,.62);
  margin-bottom:8px;
  display:block;
}
.check-cell p{
  font-size:14px;
  color:rgba(255,255,255,.86);
  margin:0;
  line-height:1.7;
}

/* ============ FAQ ============ */
.faq-accordion .accordion-item{
  background:#fff;
  border:1px solid var(--line);
  border-radius:14px;
  margin-bottom:14px;
  overflow:hidden;
}
.faq-accordion .accordion-header{margin:0;}
.faq-accordion .accordion-button{
  background:#fff;
  color:var(--ink);
  font-size:17px;
  font-weight:600;
  padding:20px 24px 20px 22px;
  border:0;
  box-shadow:none;
  position:relative;
  line-height:1.5;
}
.faq-accordion .accordion-button::before{
  content:"";
  position:absolute;
  left:0;top:16px;bottom:16px;
  width:3px;
  border-radius:0 3px 3px 0;
  background:var(--brand);
  opacity:0;
  transition:opacity .18s ease;
}
.faq-accordion .accordion-button:not(.collapsed){color:var(--brand-dark);}
.faq-accordion .accordion-button:not(.collapsed)::before{opacity:1;}
.faq-accordion .accordion-button:focus{box-shadow:none;outline:2px solid var(--brand);outline-offset:-2px;}
.faq-accordion .accordion-button::after{
  content:"+";
  background-image:none;
  width:auto;height:auto;
  font-size:22px;
  font-weight:400;
  line-height:1;
  color:var(--brand);
  display:flex;
  align-items:center;
  justify-content:center;
  transform:none;
  margin-left:16px;
}
.faq-accordion .accordion-button:not(.collapsed)::after{
  content:"−";
  transform:none;
  color:var(--brand-dark);
}
.faq-accordion .accordion-body{
  padding:0 26px 22px 22px;
  color:var(--muted);
  font-size:15.5px;
  line-height:1.85;
}
.faq-accordion .accordion-body p:last-child{margin-bottom:0;}

/* ============ CTA ============ */
.cta-band{
  background:var(--ink);
  color:#fff;
  padding:80px 0;
}
.cta-inner{
  display:grid;
  grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);
  gap:48px;
  align-items:center;
}
.cta-band h2{color:#fff;margin-bottom:14px;}
.cta-band p{color:rgba(255,255,255,.75);margin-bottom:0;}
.cta-box{
  background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.16);
  border-radius:var(--r-lg);
  padding:26px 26px 22px;
}
.cta-box label{
  display:block;
  font-size:14px;
  font-weight:600;
  color:rgba(255,255,255,.86);
  margin-bottom:10px;
}
.cta-box .field-row{display:flex;gap:10px;}
.cta-box input[type="email"]{
  flex:1;
  min-width:0;
  height:48px;
  border-radius:10px;
  border:1px solid rgba(255,255,255,.28);
  background:rgba(255,255,255,.08);
  color:#fff;
  padding:0 16px;
  font-size:15px;
}
.cta-box input[type="email"]::placeholder{color:rgba(255,255,255,.5);}
.cta-box input[type="email"]:focus{
  outline:none;
  border-color:var(--gold);
  box-shadow:0 0 0 3px rgba(217,154,78,.28);
}
.cta-note{
  font-size:13px;
  color:rgba(255,255,255,.58);
  margin:12px 0 0;
}
.form-msg{
  margin:12px 0 0;
  font-size:14px;
  color:var(--gold);
  display:none;
}
.form-msg.show{display:block;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--ink);
  color:rgba(255,255,255,.72);
  padding:64px 0 28px;
  border-top:1px solid rgba(255,255,255,.08);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:40px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:16px;
}
.brand-mark{
  width:38px;height:38px;
  border-radius:12px;
  background:var(--brand);
  color:#fff;
  font-size:15px;
  font-weight:700;
  display:flex;align-items:center;justify-content:center;
}
.brand-text{display:flex;flex-direction:column;line-height:1.3;}
.brand-name{font-size:17px;font-weight:700;color:#fff;}
.brand-sub{font-size:12px;color:rgba(255,255,255,.55);}
.footer-desc{
  font-size:14px;
  line-height:1.8;
  color:rgba(255,255,255,.66);
  margin:0;
  max-width:340px;
}
.site-footer h4{
  font-size:15px;
  color:#fff;
  margin-bottom:18px;
  font-weight:600;
}
.footer-list{list-style:none;padding:0;margin:0;}
.footer-list li{margin-bottom:11px;font-size:14px;}
.footer-list a{
  color:rgba(255,255,255,.72);
  transition:color .18s ease;
}
.footer-list a:hover{color:var(--gold);}
.footer-list span{color:rgba(255,255,255,.6);}
.footer-bottom{
  margin-top:48px;
  padding-top:22px;
  border-top:1px solid rgba(255,255,255,.1);
  display:flex;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:rgba(255,255,255,.5);
}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .cat-hero-inner{gap:40px;}
  .split{gap:40px;}
}
@media (max-width:991px){
  :root{--sec:76px;}
  .nav-chips{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-actions .btn-primary.btn-sm{display:none;}
  .header-inner{min-height:66px;}
  .cat-hero-inner{
    grid-template-columns:1fr;
    padding:48px 0 52px;
  }
  .hero-media img{height:230px;}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr));}
  .check-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .split{grid-template-columns:1fr;gap:28px;}
  .split.reverse .split-media{order:0;}
  .split-media img{height:250px;}
  .cta-inner{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:34px;}
  .filter-bar{top:66px;}
}
@media (max-width:767px){
  :root{--sec:64px;}
  body{font-size:16px;}
  .site-container{padding-left:20px;padding-right:20px;}
  .cat-hero-inner{padding:40px 0 44px;}
  .hero-media img{height:200px;}
  .split-media img{height:210px;}
  .grid-3{grid-template-columns:1fr;}
  .check-strip{padding:34px 24px;}
  .check-grid{grid-template-columns:1fr;gap:14px;}
  .cta-band{padding:60px 0;}
  .hero-actions .btn{flex:1 1 100%;}
  .cta-box .field-row{flex-direction:column;}
  .cta-box .btn{width:100%;}
}
@media (max-width:575px){
  :root{--sec:52px;}
  .site-container{padding-left:16px;padding-right:16px;}
  .logo-text{font-size:16px;}
  .cat-hero-inner{padding:34px 0 40px;}
  .section-head{margin-bottom:32px;}
  .split + .split{margin-top:52px;}
  .card-body{padding:18px 18px 20px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .check-strip{padding:28px 18px;}
  .footer-bottom{flex-direction:column;gap:8px;}
}