/* roulang page: index */
:root{
  --brand:#1F6FEB;
  --brand-dark:#1456BF;
  --brand-soft:#EAF2FE;
  --teal:#12B3A6;
  --teal-soft:#E6F7F5;
  --accent:#FF8A3D;
  --accent-soft:#FFF3EA;
  --bg:#F7FAFC;
  --surface:#FFFFFF;
  --text:#12263F;
  --muted:#5B6B7C;
  --border:#E4EDF5;
  --footer:#0F1E33;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-sm:0 8px 24px rgba(18,38,63,.08);
  --shadow-md:0 12px 32px rgba(18,38,63,.12);
  --section-space:80px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",Inter,system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  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 .2s ease,background-color .2s ease,border-color .2s ease;}
a:hover{color:var(--brand-dark);}
h1,h2,h3,h4{margin:0 0 .6em;font-weight:700;line-height:1.28;letter-spacing:-.01em;color:var(--text);}
h1{font-size:40px;line-height:1.2;}
h2{font-size:30px;line-height:1.3;}
h3{font-size:20px;font-weight:600;}
h4{font-size:17px;font-weight:600;}
p{margin:0 0 1em;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:3px solid rgba(31,111,235,.35);outline-offset:2px;}

.container{max-width:1200px;padding-left:20px;padding-right:20px;margin-left:auto;margin-right:auto;}
.section{padding:var(--section-space) 0;}
.section--tight{padding:56px 0;}
.section--soft{background:#fff;}
.section--cta{background:linear-gradient(180deg,#F1F7FF 0%,#EAF2FE 100%);}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1040;
  background:rgba(255,255,255,.95);
  backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--border);
}
.site-nav{min-height:68px;padding:0;align-items:center;}
.brand{display:flex;align-items:center;gap:10px;padding:0;margin-right:24px;}
.brand__mark{
  width:36px;height:36px;flex:0 0 36px;border-radius:11px;
  background:linear-gradient(135deg,var(--brand) 0%,#3E8BF5 100%);
  color:#fff;font-size:17px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px rgba(31,111,235,.28);
}
.brand__text{font-size:17px;font-weight:700;color:var(--text);letter-spacing:-.01em;white-space:nowrap;}
.brand:hover .brand__text{color:var(--brand);}
.nav-list{align-items:center;gap:4px;}
.nav-list .nav-link{
  position:relative;color:var(--muted);font-size:15px;font-weight:500;
  padding:10px 14px;border-radius:999px;transition:all .2s ease;
}
.nav-list .nav-link:hover{color:var(--brand);background:var(--brand-soft);}
.nav-list .nav-link.active{color:var(--brand);font-weight:600;background:var(--brand-soft);}
.nav-list .nav-link.active::after{
  content:"";position:absolute;left:50%;bottom:-1px;transform:translateX(-50%);
  width:22px;height:3px;border-radius:3px;background:var(--brand);
}
.nav-cta{
  margin-left:14px;padding:10px 18px;font-size:14px;font-weight:600;
  border-radius:var(--radius-btn);background:var(--brand);color:#fff;border:1px solid var(--brand);
  transition:all .2s ease;white-space:nowrap;
}
.nav-cta:hover{background:var(--brand-dark);border-color:var(--brand-dark);color:#fff;transform:translateY(-1px);}
.nav-toggle{
  border:1px solid var(--border);border-radius:10px;padding:7px 10px;background:#fff;
  color:var(--text);box-shadow:none;
}
.nav-toggle:focus{box-shadow:0 0 0 3px rgba(31,111,235,.18);}
.nav-toggle .bars{display:block;width:20px;height:2px;background:var(--text);border-radius:2px;position:relative;}
.nav-toggle .bars::before,.nav-toggle .bars::after{
  content:"";position:absolute;left:0;width:20px;height:2px;background:var(--text);border-radius:2px;
}
.nav-toggle .bars::before{top:-6px;}
.nav-toggle .bars::after{top:6px;}

/* ---------- 通用组件 ---------- */
.btn{font-weight:600;border-radius:var(--radius-btn);transition:all .2s ease;border-width:1px;}
.btn-brand{background:var(--brand);border-color:var(--brand);color:#fff;padding:12px 22px;font-size:15px;}
.btn-brand:hover{background:var(--brand-dark);border-color:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(31,111,235,.28);}
.btn-ghost{background:#fff;border-color:var(--brand);color:var(--brand);padding:12px 22px;font-size:15px;}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-dark);border-color:var(--brand-dark);}
.btn-text{color:var(--brand);font-weight:600;font-size:15px;display:inline-flex;align-items:center;gap:7px;padding:6px 0;}
.btn-text:hover{color:var(--brand-dark);text-decoration:underline;text-underline-offset:4px;}
.kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.06em;
  color:var(--brand);background:var(--brand-soft);
  padding:6px 14px;border-radius:999px;margin-bottom:16px;
}
.kicker--teal{color:#0E8B80;background:var(--teal-soft);}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head p{color:var(--muted);font-size:16px;margin:0;}
.section-head--row{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;max-width:none;flex-wrap:wrap;}
.section-head--row .section-head__text{max-width:680px;}
.section-head--row .section-head__text p{color:var(--muted);}
.badge-soft{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;font-weight:600;color:var(--brand);
  background:var(--brand-soft);padding:4px 12px;border-radius:999px;
}
.badge-teal{color:#0E8B80;background:var(--teal-soft);}
.badge-accent{color:#C25A18;background:var(--accent-soft);}
.divider{height:1px;background:var(--border);border:0;margin:0;}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  padding:72px 0 64px;
  background:
    radial-gradient(900px 420px at 88% -10%,rgba(31,111,235,.10),transparent 62%),
    radial-gradient(700px 360px at -5% 100%,rgba(18,179,166,.10),transparent 60%),
    #FBFDFF;
  border-bottom:1px solid var(--border);
}
.hero__grid{display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:center;}
.hero h1{margin-bottom:18px;}
.hero h1 .hl{color:var(--brand);}
.hero__lead{font-size:18px;color:var(--muted);max-width:560px;margin-bottom:26px;}
.hero__actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:22px;}
.hero__notes{display:flex;gap:22px;flex-wrap:wrap;font-size:14px;color:var(--muted);}
.hero__notes span{display:inline-flex;align-items:center;gap:7px;}
.hero__notes i{color:var(--teal);}
.hero__media{position:relative;}
.hero__media img{
  width:100%;border-radius:20px;object-fit:cover;aspect-ratio:16/11;
  box-shadow:0 24px 48px rgba(18,38,63,.14);
  border:1px solid rgba(255,255,255,.6);
}
.hero__float{
  position:absolute;left:-16px;bottom:22px;background:#fff;
  border:1px solid var(--border);border-radius:14px;padding:14px 18px;
  box-shadow:var(--shadow-md);display:flex;align-items:center;gap:12px;
}
.hero__float i{color:var(--brand);font-size:20px;}
.hero__float b{display:block;font-size:14px;color:var(--text);}
.hero__float small{color:var(--muted);font-size:12.5px;}

/* ---------- 指标条 ---------- */
.metrics{border-bottom:1px solid var(--border);background:#fff;}
.metrics__row{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;padding:34px 0;}
.metric{display:flex;align-items:center;gap:16px;}
.metric__icon{
  width:48px;height:48px;flex:0 0 48px;border-radius:14px;
  display:flex;align-items:center;justify-content:center;font-size:19px;
  background:var(--brand-soft);color:var(--brand);
}
.metric:nth-child(2) .metric__icon{background:var(--teal-soft);color:#0E8B80;}
.metric:nth-child(3) .metric__icon{background:var(--accent-soft);color:#C25A18;}
.metric b{display:block;font-size:16px;font-weight:700;}
.metric span{font-size:14px;color:var(--muted);}

/* ---------- 功能分组 ---------- */
.feature-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:24px;}
.f-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  padding:30px;box-shadow:var(--shadow-sm);transition:all .25s ease;height:100%;
  display:flex;flex-direction:column;
}
.f-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px);border-color:#D6E4F5;}
.f-card--lg{grid-column:span 3;padding:34px;}
.f-card--sm{grid-column:span 2;}
.f-icon{
  width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  font-size:21px;background:var(--brand-soft);color:var(--brand);margin-bottom:18px;
}
.f-card--lg .f-icon{background:linear-gradient(135deg,#1F6FEB,#3E8BF5);color:#fff;box-shadow:0 10px 22px rgba(31,111,235,.26);}
.f-card--sm:nth-child(3) .f-icon{background:var(--teal-soft);color:#0E8B80;}
.f-card--sm:nth-child(4) .f-icon{background:var(--accent-soft);color:#C25A18;}
.f-card--sm:nth-child(5) .f-icon{background:#EEF2FF;color:#4B5BD6;}
.f-card h3{margin-bottom:10px;}
.f-card p{color:var(--muted);font-size:15px;margin-bottom:18px;}
.f-card .btn-text{margin-top:auto;}

/* ---------- 步骤 + 场景 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-bottom:52px;}
.step{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-sm);position:relative;transition:all .25s ease;
}
.step:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);}
.step__no{
  font-family:Inter,system-ui,sans-serif;font-size:26px;font-weight:700;
  color:var(--brand-soft);-webkit-text-stroke:1px rgba(31,111,235,.5);
  line-height:1;margin-bottom:12px;letter-spacing:.02em;
}
.step h4{margin-bottom:8px;}
.step p{font-size:14px;color:var(--muted);margin:0;}
.scene-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.scene{
  display:flex;gap:20px;align-items:center;background:#fff;border:1px solid var(--border);
  border-radius:var(--radius-card);padding:20px;box-shadow:var(--shadow-sm);transition:all .25s ease;
}
.scene:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);}
.scene img{
  width:132px;height:100px;flex:0 0 132px;object-fit:cover;border-radius:var(--radius-img);
}
.scene h4{margin-bottom:6px;}
.scene p{font-size:14px;color:var(--muted);margin:0;}

/* ---------- 案例 ---------- */
.case-row{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;margin-bottom:64px;}
.case-row:last-child{margin-bottom:0;}
.case-row--reverse .case-media{order:2;}
.case-row--reverse .case-body{order:1;}
.case-media img{width:100%;border-radius:var(--radius-card);object-fit:cover;aspect-ratio:16/10;box-shadow:var(--shadow-sm);border:1px solid var(--border);}
.case-body h3{font-size:24px;margin-bottom:14px;}
.case-body p{color:var(--muted);font-size:15.5px;margin-bottom:18px;}
.case-tags{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:20px;}
.case-quote{
  border-left:3px solid var(--brand);background:#fff;border-radius:0 var(--radius-img) var(--radius-img) 0;
  padding:14px 18px;color:var(--muted);font-size:15px;box-shadow:var(--shadow-sm);
}

/* ---------- 方案 ---------- */
.plan-wrap{display:grid;grid-template-columns:.85fr 1.35fr;gap:44px;align-items:start;}
.plan-intro h2{margin-bottom:14px;}
.plan-intro p{color:var(--muted);font-size:15.5px;}
.plan-list{margin-top:22px;display:grid;gap:12px;}
.plan-list li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--muted);}
.plan-list i{color:var(--teal);margin-top:4px;}
.plan-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.plan-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  padding:26px 22px;box-shadow:var(--shadow-sm);display:flex;flex-direction:column;
  transition:all .25s ease;position:relative;
}
.plan-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);}
.plan-card--recommend{border:2px solid var(--brand);box-shadow:0 14px 34px rgba(31,111,235,.16);}
.plan-card__badge{
  position:absolute;top:-13px;left:22px;background:var(--accent);color:#fff;
  font-size:12px;font-weight:700;padding:4px 12px;border-radius:999px;letter-spacing:.03em;
}
.plan-card h4{font-size:17px;margin-bottom:6px;}
.plan-card__label{font-size:13px;color:var(--muted);margin-bottom:16px;display:block;}
.plan-card__value{
  font-size:22px;font-weight:700;color:var(--brand);margin-bottom:18px;
  font-family:Inter,system-ui,sans-serif;letter-spacing:-.01em;
}
.plan-card__value small{display:block;font-size:13px;font-weight:500;color:var(--muted);font-family:inherit;letter-spacing:0;margin-top:2px;}
.plan-feats{display:grid;gap:10px;margin-bottom:22px;font-size:14.5px;color:var(--muted);}
.plan-feats li{display:flex;gap:9px;align-items:flex-start;}
.plan-feats i{color:var(--brand);margin-top:4px;}
.plan-card .btn{width:100%;margin-top:auto;padding:11px 18px;font-size:14.5px;}

/* ---------- 资讯 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.post-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-sm);transition:all .25s ease;height:100%;
  display:flex;flex-direction:column;
}
.post-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:#D6E4F5;}
.post-card__link{display:flex;flex-direction:column;height:100%;color:inherit;}
.post-card__link:hover{color:inherit;}
.post-card__thumb{aspect-ratio:16/10;overflow:hidden;background:#EDF3FA;}
.post-card__thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.post-card:hover .post-card__thumb img{transform:scale(1.04);}
.post-card__body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1;}
.post-card__body h3{font-size:17px;line-height:1.5;margin:12px 0 8px;}
.post-card__body p{font-size:14.5px;color:var(--muted);margin-bottom:16px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-card__meta{
  display:flex;justify-content:space-between;align-items:center;gap:12px;
  font-size:13px;color:var(--muted);margin-top:auto;padding-top:14px;border-top:1px solid var(--border);
}
.empty-state{
  background:#fff;border:1px dashed #CFE0F2;border-radius:var(--radius-card);
  padding:56px 24px;text-align:center;color:var(--muted);
}
.empty-state i{font-size:34px;color:#B9D0E8;margin-bottom:16px;display:block;}
.empty-state p{margin-bottom:14px;font-size:15.5px;}

/* ---------- FAQ ---------- */
.faq-accordion .accordion-item{
  border:1px solid var(--border);border-radius:var(--radius-card);background:#fff;
  margin-bottom:14px;overflow:hidden;box-shadow:var(--shadow-sm);
}
.faq-accordion .accordion-button{
  font-size:17px;font-weight:600;color:var(--text);background:#fff;
  padding:20px 22px;box-shadow:none;border-left:3px solid transparent;
}
.faq-accordion .accordion-button:not(.collapsed){
  color:var(--brand);background:var(--brand-soft);border-left-color:var(--brand);
}
.faq-accordion .accordion-button:focus{box-shadow:0 0 0 3px rgba(31,111,235,.16);}
.faq-accordion .accordion-button::after{
  width:16px;height:16px;background-size:16px;filter:invert(38%) sepia(88%) saturate(2000%) hue-rotate(203deg) brightness(96%) contrast(94%);
}
.faq-accordion .accordion-body{
  color:var(--muted);font-size:15px;line-height:1.85;padding:16px 22px 22px;border-top:1px solid var(--border);
}

/* ---------- 底部 CTA ---------- */
.cta-box{
  background:#fff;border:1px solid #D8E6F8;border-radius:20px;
  padding:52px 44px;box-shadow:var(--shadow-sm);
  display:grid;grid-template-columns:1.4fr auto;gap:32px;align-items:center;
}
.cta-box h2{margin-bottom:12px;}
.cta-box p{color:var(--muted);margin:0;font-size:15.5px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--footer);color:#C7D4E3;padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand__mark{box-shadow:none;}
.footer-brand span{color:#fff;font-size:16.5px;font-weight:700;}
.site-footer p{font-size:14.5px;line-height:1.85;color:#93A6BC;}
.site-footer h4{font-size:15px;color:#fff;margin-bottom:18px;font-weight:600;}
.footer-links{display:grid;gap:11px;}
.footer-links a{color:#A9BBD0;font-size:14.5px;transition:color .2s ease;}
.footer-links a:hover{color:var(--teal);}
.footer-contact li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:#A9BBD0;margin-bottom:12px;}
.footer-contact i{color:var(--teal);margin-top:4px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.09);padding:20px 0 26px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13.5px;color:#7C90A8;
}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  :root{--section-space:64px;}
  h1{font-size:36px;}
  h2{font-size:27px;}
  .hero__grid{gap:36px;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .plan-cards{grid-template-columns:1fr;max-width:520px;}
}
@media (max-width:991.98px){
  :root{--section-space:56px;}
  .nav-list{gap:0;padding:8px 0;}
  .nav-list .nav-link{padding:11px 14px;border-radius:10px;}
  .nav-list .nav-link.active::after{display:none;}
  .nav-cta{margin:10px 0 6px;display:inline-block;text-align:center;}
  .navbar-collapse{background:#fff;border-top:1px solid var(--border);margin-top:12px;padding:6px 0 12px;}
  .hero{padding:52px 0 48px;}
  .hero__grid{grid-template-columns:1fr;gap:32px;}
  .hero__media{order:-1;}
  .hero__float{position:static;margin-top:14px;display:inline-flex;}
  .feature-grid{grid-template-columns:repeat(2,1fr);}
  .f-card--lg,.f-card--sm{grid-column:span 1;}
  .steps{grid-template-columns:repeat(2,1fr);}
  .case-row{grid-template-columns:1fr;gap:24px;margin-bottom:44px;}
  .case-row--reverse .case-media,.case-row--reverse .case-body{order:0;}
  .plan-wrap{grid-template-columns:1fr;gap:28px;}
  .cta-box{grid-template-columns:1fr;padding:38px 28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767.98px){
  h1{font-size:30px;line-height:1.28;}
  h2{font-size:24px;line-height:1.35;}
  .hero__lead{font-size:16.5px;}
  .metrics__row{grid-template-columns:1fr;gap:20px;padding:26px 0;}
  .scene-grid{grid-template-columns:1fr;}
  .news-grid{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;}
  .section-head{margin-bottom:32px;}
  .section-head--row{align-items:flex-start;}
}
@media (max-width:575.98px){
  .container{padding-left:16px;padding-right:16px;}
  .feature-grid{grid-template-columns:1fr;}
  .scene{flex-direction:column;align-items:flex-start;gap:14px;}
  .scene img{width:100%;height:170px;flex:none;}
  .hero__actions .btn{width:100%;text-align:center;}
  .cta-actions .btn{width:100%;text-align:center;}
  .footer-grid{grid-template-columns:1fr;}
  .brand__text{font-size:15px;white-space:normal;line-height:1.3;}
  .post-card__body{padding:18px;}
}

/* roulang page: article */
:root{
  --brand:#1F6FEB;
  --brand-dark:#1558C0;
  --brand-soft:#EAF2FE;
  --teal:#12B3A6;
  --teal-soft:#E6F7F5;
  --orange:#FF8A3D;
  --bg:#F7FAFC;
  --card:#FFFFFF;
  --text:#12263F;
  --muted:#5B6B7C;
  --line:#E4EDF5;
  --footer:#0F1E33;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-card:0 8px 24px rgba(18,38,63,.08);
  --shadow-hover:0 12px 32px rgba(18,38,63,.12);
  --space:24px;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",Inter,system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-dark);}
a:focus-visible,button:focus-visible{outline:2px solid rgba(31,111,235,.45);outline-offset:2px;}
ul,ol{padding-left:1.25rem;}
h1,h2,h3,h4{color:var(--text);margin:0 0 .6em;line-height:1.35;}
:root{--gutter:24px;}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(255,255,255,.95);
  backdrop-filter:saturate(160%) blur(8px);
  border-bottom:1px solid var(--line);
}
.site-nav{
  min-height:68px;
  padding:0;
  display:flex;
  align-items:center;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:18px;
  font-weight:700;
  color:var(--text);
  letter-spacing:.2px;
  padding:0;
}
.brand:hover{color:var(--text);}
.brand__mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:34px;
  height:34px;
  border-radius:10px;
  background:linear-gradient(135deg,var(--brand),var(--teal));
  color:#fff;
  font-size:17px;
  font-weight:700;
  flex:0 0 auto;
}
.brand__text{white-space:nowrap;}
.nav-toggle{
  border:1px solid var(--line);
  border-radius:10px;
  padding:8px 12px;
  background:#fff;
}
.nav-toggle:focus{box-shadow:none;}
.nav-toggle .bars,
.nav-toggle .bars::before,
.nav-toggle .bars::after{
  display:block;
  width:20px;
  height:2px;
  background:var(--text);
  border-radius:2px;
  position:relative;
  content:"";
}
.nav-toggle .bars::before{position:absolute;top:-6px;left:0;}
.nav-toggle .bars::after{position:absolute;top:6px;left:0;}
.nav-list{
  align-items:center;
  gap:4px;
}
.nav-list .nav-link{
  color:var(--text);
  font-size:15px;
  padding:8px 14px;
  border-radius:8px;
  position:relative;
  transition:color .2s ease,background .2s ease;
}
.nav-list .nav-link:hover{
  color:var(--brand);
  background:var(--brand-soft);
}
.nav-list .nav-link.active{
  color:var(--brand);
  font-weight:600;
  background:var(--brand-soft);
}
.nav-list .nav-link.active::after{
  content:"";
  position:absolute;
  left:14px;
  right:14px;
  bottom:2px;
  height:3px;
  border-radius:3px;
  background:var(--brand);
}
.nav-cta{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  margin-left:14px;
  padding:10px 20px;
  border-radius:var(--radius-btn);
  background:var(--brand);
  color:#fff;
  font-size:15px;
  font-weight:600;
  transition:transform .2s ease,background .2s ease,box-shadow .2s ease;
}
.nav-cta:hover{
  background:var(--brand-dark);
  color:#fff;
  transform:translateY(-1px);
  box-shadow:0 8px 18px rgba(31,111,235,.24);
}
@media (max-width:991.98px){
  .nav-list{gap:0;margin-top:12px;align-items:flex-start;}
  .nav-list .nav-link{padding:10px 12px;width:100%;}
  .nav-list .nav-link.active::after{display:none;}
  .nav-cta{margin:12px 0 8px;width:100%;}
}

/* ---------- page head ---------- */
.page-head{
  background:
    linear-gradient(180deg,rgba(234,242,254,.9),rgba(247,250,252,0)),
    url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  padding:40px 0 34px;
  border-bottom:1px solid var(--line);
}
.crumb{
  font-size:14px;
  color:var(--muted);
  margin-bottom:14px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--brand);}
.crumb i{font-size:10px;opacity:.6;}
.article-cat{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 14px;
  border-radius:999px;
  background:var(--teal-soft);
  color:#0C857B;
  font-size:13px;
  font-weight:600;
  margin-bottom:14px;
}
.article-title{
  font-size:40px;
  line-height:1.3;
  font-weight:700;
  margin:0 0 16px;
  letter-spacing:-.2px;
}
.article-meta{
  display:flex;
  flex-wrap:wrap;
  gap:10px 22px;
  color:var(--muted);
  font-size:14px;
}
.article-meta span{display:inline-flex;align-items:center;gap:7px;}
.article-meta i{color:var(--brand);}

/* ---------- layout ---------- */
.page-body{padding:56px 0 64px;}
.layout-grid{
  display:grid;
  grid-template-columns:minmax(0,1fr) 320px;
  gap:36px;
  align-items:start;
}
@media (max-width:991.98px){
  .layout-grid{grid-template-columns:minmax(0,1fr);gap:32px;}
}

/* ---------- article content ---------- */
.article-panel{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  padding:36px 40px;
}
.article-body{
  max-width:820px;
  font-size:16px;
  line-height:1.8;
  color:#20344C;
  word-break:break-word;
}
.article-body > *:first-child{margin-top:0;}
.article-body h2{
  font-size:30px;
  font-weight:700;
  line-height:1.35;
  margin:2em 0 .7em;
  padding-left:14px;
  border-left:4px solid var(--brand);
}
.article-body h3{
  font-size:20px;
  font-weight:600;
  line-height:1.5;
  margin:1.6em 0 .6em;
}
.article-body h4{font-size:17px;font-weight:600;margin:1.4em 0 .5em;}
.article-body p{margin:0 0 1.1em;}
.article-body a{color:var(--brand);border-bottom:1px solid rgba(31,111,235,.3);}
.article-body a:hover{color:var(--brand-dark);border-bottom-color:var(--brand-dark);}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.4rem;}
.article-body li{margin-bottom:.5em;}
.article-body img{
  border-radius:var(--radius-img);
  margin:1.4em auto;
  box-shadow:var(--shadow-card);
}
.article-body blockquote{
  margin:1.6em 0;
  padding:16px 22px;
  border-left:3px solid var(--brand);
  background:var(--brand-soft);
  border-radius:0 var(--radius-img) var(--radius-img) 0;
  color:#33485F;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body table{
  width:100%;
  border-collapse:separate;
  border-spacing:0;
  margin:1.5em 0;
  font-size:15px;
  border:1px solid var(--line);
  border-radius:var(--radius-img);
  overflow:hidden;
}
.article-body th,
.article-body td{
  padding:12px 16px;
  border-bottom:1px solid var(--line);
  text-align:left;
}
.article-body thead th{background:#F2F7FD;font-weight:600;color:var(--text);}
.article-body tbody tr:last-child td{border-bottom:none;}
.article-body code{
  background:#EEF4FB;
  padding:2px 6px;
  border-radius:6px;
  font-size:14px;
  color:#1558C0;
}
.empty-state{
  text-align:center;
  padding:56px 20px;
}
.empty-state .empty-icon{
  width:64px;height:64px;
  margin:0 auto 18px;
  border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--brand-soft);
  color:var(--brand);
  font-size:24px;
}
.empty-state h2{font-size:22px;margin-bottom:10px;}
.empty-state p{color:var(--muted);margin-bottom:20px;}

/* ---------- sidebar ---------- */
.sidebar{
  position:sticky;
  top:92px;
  display:flex;
  flex-direction:column;
  gap:20px;
}
@media (max-width:991.98px){
  .sidebar{position:static;top:auto;}
}
.side-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  padding:22px;
}
.side-card h3{
  font-size:17px;
  font-weight:700;
  margin:0 0 14px;
  display:flex;
  align-items:center;
  gap:8px;
}
.side-card h3 i{color:var(--brand);font-size:15px;}
.side-list{list-style:none;padding:0;margin:0;}
.side-list li{
  padding:10px 0;
  border-bottom:1px dashed var(--line);
  font-size:15px;
}
.side-list li:last-child{border-bottom:none;padding-bottom:0;}
.side-list a{color:#33485F;display:flex;justify-content:space-between;gap:10px;align-items:center;}
.side-list a:hover{color:var(--brand);}
.side-list a i{font-size:11px;color:var(--muted);}
.side-note{
  background:linear-gradient(160deg,#EAF2FE,#E6F7F5);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:22px;
}
.side-note h3{font-size:17px;margin:0 0 10px;}
.side-note p{font-size:14px;color:#3D5468;line-height:1.7;margin:0 0 16px;}
.btn-main{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 20px;
  border-radius:var(--radius-btn);
  background:var(--brand);
  color:#fff;
  font-size:15px;
  font-weight:600;
  border:none;
  transition:transform .2s ease,background .2s ease,box-shadow .2s ease;
}
.btn-main:hover{
  background:var(--brand-dark);
  color:#fff;
  transform:translateY(-1px);
  box-shadow:0 10px 22px rgba(31,111,235,.24);
}
.btn-ghost{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 20px;
  border-radius:var(--radius-btn);
  background:#fff;
  color:var(--brand);
  border:1px solid var(--brand);
  font-size:15px;
  font-weight:600;
  transition:background .2s ease,transform .2s ease;
}
.btn-ghost:hover{
  background:var(--brand-soft);
  color:var(--brand-dark);
  transform:translateY(-1px);
}
.btn-block{width:100%;}

/* ---------- related ---------- */
.section{padding:0 0 64px;}
.section-title{
  font-size:30px;
  font-weight:700;
  margin:0 0 8px;
}
.section-sub{
  color:var(--muted);
  font-size:15px;
  margin:0 0 28px;
}
.rel-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
@media (max-width:991.98px){.rel-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media (max-width:575.98px){.rel-grid{grid-template-columns:1fr;}}
.rel-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  overflow:hidden;
  display:flex;
  flex-direction:column;
  transition:transform .2s ease,box-shadow .2s ease;
}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.rel-card__img{
  aspect-ratio:16/10;
  overflow:hidden;
  background:#EDF3FA;
}
.rel-card__img img{width:100%;height:100%;object-fit:cover;}
.rel-card__body{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1;}
.tag{
  display:inline-flex;
  align-items:center;
  align-self:flex-start;
  padding:4px 12px;
  border-radius:999px;
  background:var(--teal-soft);
  color:#0C857B;
  font-size:12px;
  font-weight:600;
  margin-bottom:10px;
}
.rel-card h3{
  font-size:17px;
  font-weight:600;
  line-height:1.55;
  margin:0 0 10px;
}
.rel-card h3 a{color:var(--text);}
.rel-card h3 a:hover{color:var(--brand);}
.rel-card p{font-size:14px;color:var(--muted);margin:0 0 14px;}
.rel-card time{
  margin-top:auto;
  font-size:13px;
  color:var(--muted);
  display:flex;
  align-items:center;
  gap:7px;
}
.rel-card time i{color:var(--brand);}

/* ---------- cta ---------- */
.cta-band{
  background:linear-gradient(135deg,#EAF2FE,#E6F7F5);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:44px 40px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  flex-wrap:wrap;
  margin-bottom:64px;
}
.cta-band h2{font-size:26px;margin:0 0 8px;}
.cta-band p{margin:0;color:#3D5468;font-size:15px;max-width:640px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- footer ---------- */
.site-footer{
  background:var(--footer);
  color:#C8D6E6;
  padding:56px 0 0;
  font-size:14px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:32px;
  padding-bottom:36px;
  border-bottom:1px solid rgba(255,255,255,.1);
}
@media (max-width:991.98px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media (max-width:575.98px){.footer-grid{grid-template-columns:1fr;}}
.site-footer h4{
  color:#fff;
  font-size:15px;
  font-weight:600;
  margin:0 0 16px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  color:#fff;
  font-size:17px;
  font-weight:700;
  margin-bottom:14px;
}
.footer-brand .brand__mark{width:30px;height:30px;font-size:15px;}
.site-footer p{color:#9DB1C7;line-height:1.8;margin:0;font-size:14px;}
.footer-links,.footer-contact{list-style:none;padding:0;margin:0;}
.footer-links li{margin-bottom:10px;}
.footer-links a{color:#C8D6E6;}
.footer-links a:hover{color:var(--teal);}
.footer-contact li{
  display:flex;
  gap:10px;
  margin-bottom:12px;
  color:#9DB1C7;
  line-height:1.7;
}
.footer-contact i{color:var(--teal);margin-top:4px;}
.footer-bottom{
  display:flex;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:10px;
  padding:20px 0 26px;
  color:#8A9DB3;
  font-size:13px;
}

/* ---------- responsive type ---------- */
@media (max-width:991.98px){
  .article-title{font-size:34px;}
  .article-panel{padding:30px 26px;}
  .article-body h2{font-size:26px;margin-top:1.7em;}
  .section-title{font-size:26px;}
  .page-head{padding:32px 0 28px;}
}
@media (max-width:575.98px){
  body{font-size:15px;}
  .article-title{font-size:28px;}
  .article-panel{padding:22px 18px;}
  .article-body h2{font-size:23px;}
  .article-body h3{font-size:18px;}
  .cta-band{padding:30px 22px;}
  .cta-band h2{font-size:22px;}
  .cta-actions .btn-main,.cta-actions .btn-ghost{width:100%;}
  .page-body{padding:36px 0 48px;}
}

/* roulang page: category1 */
:root{
  --brand:#1F6FEB;
  --brand-dark:#1558c0;
  --brand-soft:#E8F1FE;
  --teal:#12B3A6;
  --teal-soft:#E4F7F5;
  --orange:#FF8A3D;
  --bg:#F7FAFC;
  --card:#FFFFFF;
  --text:#12263F;
  --muted:#5B6B7C;
  --border:#E4EDF5;
  --footer-bg:#0F1E33;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow:0 8px 24px rgba(18,38,63,.08);
  --shadow-hover:0 12px 32px rgba(18,38,63,.12);
  --space-section:80px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",Inter,system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  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 .2s ease;}
a:hover{color:var(--brand-dark);}
button{font-family:inherit;}
h1,h2,h3,h4{color:var(--text);margin:0 0 12px;line-height:1.3;}
h1{font-size:40px;font-weight:700;}
h2{font-size:30px;font-weight:700;line-height:1.2;}
h3{font-size:20px;font-weight:600;}
p{margin:0 0 14px;color:var(--muted);}
.container{max-width:1200px;padding-left:20px;padding-right:20px;margin:0 auto;}
.section{padding:var(--space-section) 0;}
.section-head{max-width:720px;margin-bottom:40px;}
.section-head .eyebrow{
  display:inline-block;font-size:14px;font-weight:600;color:var(--brand);
  background:var(--brand-soft);border-radius:999px;padding:5px 14px;margin-bottom:14px;
}
.section-head p{font-size:16px;margin-bottom:0;}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(255,255,255,.96);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--border);
}
.site-nav{padding:0;min-height:68px;display:flex;align-items:center;}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px;color:var(--text);padding:0;}
.brand:hover{color:var(--text);}
.brand__mark{
  width:36px;height:36px;border-radius:10px;flex:0 0 36px;
  background:linear-gradient(135deg,var(--brand),var(--teal));
  color:#fff;font-size:18px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
}
.brand__text{letter-spacing:.2px;white-space:nowrap;}
.nav-list{align-items:center;gap:4px;}
.nav-list .nav-link{
  position:relative;color:var(--text);font-size:15px;font-weight:500;
  padding:10px 14px;border-radius:999px;transition:all .2s ease;
}
.nav-list .nav-link:hover{color:var(--brand);background:var(--brand-soft);}
.nav-list .nav-link.active{color:var(--brand);font-weight:600;}
.nav-list .nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:3px;
  border-radius:3px;background:var(--brand);
}
.nav-cta{
  display:inline-flex;align-items:center;justify-content:center;
  margin-left:18px;padding:10px 20px;border-radius:var(--radius-btn);
  background:var(--brand);color:#fff;font-size:15px;font-weight:600;
  box-shadow:0 6px 16px rgba(31,111,235,.24);transition:all .2s ease;
}
.nav-cta:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);}
.nav-toggle{
  border:1px solid var(--border);border-radius:10px;padding:8px 10px;background:#fff;
}
.nav-toggle:focus{box-shadow:0 0 0 3px rgba(31,111,235,.2);outline:none;}
.nav-toggle .bars,.nav-toggle .bars::before,.nav-toggle .bars::after{
  display:block;width:20px;height:2px;border-radius:2px;background:var(--text);
  content:"";position:relative;
}
.nav-toggle .bars::before{position:absolute;top:-6px;}
.nav-toggle .bars::after{position:absolute;top:6px;}

/* ============ 小 Hero ============ */
.page-hero{
  background:linear-gradient(180deg,#FFFFFF 0%,#F1F7FE 100%);
  border-bottom:1px solid var(--border);
  padding:48px 0 64px;
}
.crumb{font-size:14px;color:var(--muted);margin-bottom:18px;}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--brand);}
.crumb span.sep{margin:0 8px;color:#B7C4D1;}
.page-hero h1{margin-bottom:16px;}
.page-hero h1 .hl{color:var(--brand);}
.page-hero .lead{font-size:17px;max-width:600px;color:var(--muted);}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.tag-pill{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:500;
  color:var(--brand);background:#fff;border:1px solid var(--border);
  border-radius:999px;padding:6px 14px;box-shadow:0 2px 8px rgba(18,38,63,.04);
}
.tag-pill i{color:var(--teal);}
.hero-figure{
  border-radius:20px;overflow:hidden;box-shadow:var(--shadow);border:1px solid var(--border);
  background:#fff;
}
.hero-figure img{width:100%;height:100%;aspect-ratio:16/11;object-fit:cover;}

/* ============ 信任条 ============ */
.trust-strip{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  box-shadow:var(--shadow);padding:26px 8px;margin-top:-38px;position:relative;z-index:2;
}
.trust-item{text-align:center;padding:8px 16px;}
.trust-item .num{font-size:26px;font-weight:700;color:var(--brand);line-height:1.2;}
.trust-item .lbl{font-size:14px;color:var(--muted);}
.trust-item + .trust-item{border-left:1px solid var(--border);}

/* ============ 卡片通用 ============ */
.ui-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius-card);
  box-shadow:var(--shadow);padding:26px;height:100%;transition:transform .25s ease,box-shadow .25s ease;
}
.ui-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.icon-box{
  width:46px;height:46px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  font-size:19px;margin-bottom:16px;background:var(--brand-soft);color:var(--brand);
}
.icon-box.teal{background:var(--teal-soft);color:var(--teal);}
.icon-box.orange{background:#FFF1E6;color:var(--orange);}
.link-more{font-size:15px;font-weight:600;display:inline-flex;align-items:center;gap:6px;}
.link-more:hover{gap:10px;}
.link-more i{font-size:12px;}

/* ============ 步骤式流程 ============ */
.step-layout{position:relative;}
.step-list{list-style:none;margin:0;padding:0;}
.step-item{
  display:flex;gap:20px;background:#fff;border:1px solid var(--border);
  border-radius:var(--radius-card);padding:24px;box-shadow:var(--shadow);
  transition:transform .25s ease,box-shadow .25s ease;position:relative;
}
.step-item + .step-item{margin-top:20px;}
.step-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.step-num{
  flex:0 0 48px;width:48px;height:48px;border-radius:14px;
  background:var(--brand);color:#fff;font-weight:700;font-size:17px;
  display:flex;align-items:center;justify-content:center;letter-spacing:.5px;
}
.step-item h3{margin-bottom:8px;}
.step-item p{margin-bottom:0;font-size:15px;}
.step-tip{
  display:inline-flex;align-items:flex-start;gap:8px;margin-top:12px;
  font-size:14px;color:var(--muted);background:var(--bg);
  border-left:3px solid var(--teal);border-radius:0 10px 10px 0;padding:8px 14px;
}
.step-tip i{color:var(--teal);margin-top:4px;}
.step-aside{position:sticky;top:96px;}
.aside-figure{border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--border);box-shadow:var(--shadow);}
.aside-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.aside-note{
  margin-top:20px;background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  padding:22px;box-shadow:var(--shadow);
}
.aside-note h3{font-size:17px;margin-bottom:10px;}
.check-list{list-style:none;margin:0;padding:0;}
.check-list li{position:relative;padding-left:26px;font-size:15px;color:var(--muted);margin-bottom:10px;}
.check-list li:last-child{margin-bottom:0;}
.check-list li::before{
  content:"\f00c";font-family:"Font Awesome 6 Free";font-weight:900;
  position:absolute;left:0;top:2px;font-size:12px;color:var(--teal);
}

/* ============ 适用场景 ============ */
.scene-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow);height:100%;
  transition:transform .25s ease,box-shadow .25s ease;
}
.scene-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.scene-card img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.scene-card .scene-body{padding:20px 22px 24px;}
.scene-card h3{font-size:18px;margin-bottom:8px;}
.scene-card p{font-size:15px;margin-bottom:0;}
.badge-soft{
  display:inline-block;font-size:13px;font-weight:600;color:var(--brand);
  background:var(--brand-soft);border-radius:999px;padding:4px 12px;margin-bottom:12px;
}
.badge-teal{color:var(--teal);background:var(--teal-soft);}
.badge-orange{color:#c25f16;background:#FFF1E6;}

/* ============ 注意事项 ============ */
.notice-block{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  box-shadow:var(--shadow);padding:32px;height:100%;
}
.notice-block.dark{background:var(--footer-bg);border-color:var(--footer-bg);}
.notice-block.dark h3,.notice-block.dark .list-plain strong{color:#fff;}
.notice-block.dark p,.notice-block.dark .list-plain span{color:#A9B8C9;}
.list-plain{list-style:none;margin:0;padding:0;}
.list-plain li{padding:14px 0;border-bottom:1px dashed var(--border);}
.list-plain li:last-child{border-bottom:none;padding-bottom:0;}
.list-plain strong{display:block;font-size:16px;margin-bottom:4px;}
.list-plain span{font-size:14.5px;color:var(--muted);}
.notice-block.dark .list-plain li{border-bottom-color:rgba(255,255,255,.12);}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px;margin:0 auto;}
.accordion-item{
  border:1px solid var(--border);border-radius:14px !important;overflow:hidden;
  margin-bottom:14px;background:#fff;box-shadow:0 4px 14px rgba(18,38,63,.05);
}
.accordion-button{
  font-size:17px;font-weight:600;color:var(--text);background:#fff;
  padding:20px 22px;border:none;box-shadow:none;border-radius:14px !important;
}
.accordion-button:not(.collapsed){color:var(--brand);background:var(--brand-soft);box-shadow:inset 3px 0 0 var(--brand);}
.accordion-button:focus{box-shadow:none;outline:2px solid rgba(31,111,235,.35);outline-offset:-2px;}
.accordion-button::after{background-image:none;content:"\2b";font-family:inherit;font-size:20px;color:var(--brand);
  width:auto;height:auto;display:flex;align-items:center;justify-content:center;transform:none;}
.accordion-button:not(.collapsed)::after{content:"\2212";transform:none;}
.accordion-body{padding:4px 22px 22px;font-size:15.5px;color:var(--muted);line-height:1.85;}

/* ============ 相关分类 ============ */
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.related-card{
  display:block;background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow);transition:transform .25s ease,box-shadow .25s ease;height:100%;
}
.related-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);color:inherit;}
.related-card i{color:var(--brand);font-size:20px;margin-bottom:12px;display:block;}
.related-card h4{font-size:17px;margin-bottom:8px;color:var(--text);}
.related-card p{font-size:14.5px;margin-bottom:0;}

/* ============ CTA ============ */
.cta-band{
  background:linear-gradient(135deg,#EAF2FE 0%,#E6F7F5 100%);
  border:1px solid #D8E6F6;border-radius:20px;padding:48px 40px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
}
.cta-band h2{font-size:28px;margin-bottom:10px;}
.cta-band p{margin-bottom:0;font-size:16px;max-width:620px;}
.btn-main{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--brand);color:#fff;font-size:16px;font-weight:600;
  padding:12px 24px;border-radius:var(--radius-btn);border:1px solid var(--brand);
  box-shadow:0 8px 20px rgba(31,111,235,.22);transition:all .2s ease;
}
.btn-main:hover{background:var(--brand-dark);border-color:var(--brand-dark);color:#fff;transform:translateY(-1px);}
.btn-main:focus{outline:none;box-shadow:0 0 0 3px rgba(31,111,235,.3);}
.btn-ghost{
  display:inline-flex;align-items:center;gap:8px;background:#fff;color:var(--brand);
  font-size:16px;font-weight:600;padding:12px 24px;border-radius:var(--radius-btn);
  border:1px solid var(--brand);transition:all .2s ease;
}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-dark);transform:translateY(-1px);}

/* ============ 页脚 ============ */
.site-footer{background:var(--footer-bg);color:#C6D3E1;padding:64px 0 28px;margin-top:var(--space-section);}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:#fff;margin-bottom:14px;}
.site-footer p{color:#A9B8C9;font-size:14.5px;line-height:1.8;margin:0;}
.site-footer h4{color:#fff;font-size:16px;margin-bottom:16px;}
.footer-links,.footer-contact{list-style:none;margin:0;padding:0;}
.footer-links li{margin-bottom:10px;}
.footer-links a{color:#A9B8C9;font-size:14.5px;}
.footer-links a:hover{color:var(--teal);}
.footer-contact li{display:flex;gap:10px;align-items:flex-start;color:#A9B8C9;font-size:14.5px;margin-bottom:12px;}
.footer-contact i{color:var(--teal);margin-top:5px;}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:14px;color:#8FA2B6;
}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  h1{font-size:36px;}
  :root{--space-section:72px;}
}
@media (max-width:991.98px){
  h1{font-size:32px;}
  h2{font-size:26px;}
  :root{--space-section:56px;}
  .site-nav{align-items:center;flex-wrap:wrap;padding:10px 0;}
  .site-nav .navbar-collapse{
    background:#fff;border:1px solid var(--border);border-radius:16px;
    box-shadow:var(--shadow);padding:14px 16px;margin-top:12px;
  }
  .nav-list{align-items:stretch;gap:0;}
  .nav-list .nav-link{padding:12px 6px;border-radius:10px;}
  .nav-list .nav-link.active{background:var(--brand-soft);}
  .nav-list .nav-link.active::after{display:none;}
  .nav-cta{margin:12px 0 4px;width:100%;}
  .page-hero{padding:32px 0 52px;}
  .hero-figure{margin-top:28px;}
  .step-aside{position:static;margin-top:28px;}
  .trust-strip{margin-top:-26px;}
  .trust-item + .trust-item{border-left:none;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .related-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:767.98px){
  h1{font-size:28px;}
  h2{font-size:23px;}
  .cta-band{padding:32px 24px;}
  .notice-block{padding:24px;}
  .related-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
}
@media (max-width:575.98px){
  h1{font-size:26px;line-height:1.35;}
  h2{font-size:22px;}
  .brand__text{font-size:15px;white-space:normal;}
  .trust-item{padding:10px 4px;}
  .trust-item .num{font-size:22px;}
  .step-item{flex-direction:column;gap:14px;padding:20px;}
  .step-num{width:42px;height:42px;flex:0 0 42px;font-size:15px;}
  .btn-main,.btn-ghost{width:100%;justify-content:center;}
  .cta-band h2{font-size:22px;}
}

/* roulang page: category2 */
:root{
  --brand:#1F6FEB;
  --brand-dark:#1A5CC4;
  --brand-soft:#E8F1FE;
  --safe:#12B3A6;
  --safe-soft:#E4F7F5;
  --accent:#FF8A3D;
  --accent-soft:#FFF1E7;
  --bg:#F7FAFC;
  --card:#FFFFFF;
  --ink:#12263F;
  --ink-2:#5B6B7C;
  --line:#E4EDF5;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow:0 8px 24px rgba(18,38,63,.08);
  --shadow-hover:0 12px 32px rgba(18,38,63,.12);
  --gap-section:80px;
  --font: "PingFang SC","HarmonyOS Sans","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:28px;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
a{color:var(--brand);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand-dark)}
img{max-width:100%;height:auto;display:block}
button,input,textarea,select{font-family:inherit;font-size:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink);letter-spacing:.2px}
h1{font-size:40px;line-height:48px;font-weight:700}
h2{font-size:30px;line-height:36px;font-weight:700}
h3{font-size:20px;line-height:24px;font-weight:600}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
.container{max-width:1200px;padding-left:20px;padding-right:20px}
.row{--bs-gutter-x:24px;--bs-gutter-y:24px}
section{padding:var(--gap-section) 0}
.section-head{max-width:760px;margin-bottom:40px}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14px;line-height:22px;color:var(--brand);
  background:var(--brand-soft);border-radius:999px;padding:6px 14px;margin-bottom:16px;font-weight:600;
}
.section-head h2{margin-bottom:14px}
.section-head p{color:var(--ink-2);font-size:16px;line-height:28px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(255,255,255,.95);
  backdrop-filter:saturate(160%) blur(8px);
  border-bottom:1px solid var(--line);
}
.site-nav{height:68px;padding:0;align-items:center}
.brand{display:flex;align-items:center;gap:10px;padding:0;margin-right:24px}
.brand__mark{
  width:36px;height:36px;border-radius:11px;flex:0 0 36px;
  background:linear-gradient(140deg,var(--brand),var(--safe));
  color:#fff;font-weight:700;font-size:18px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px rgba(31,111,235,.28);
}
.brand__text{font-size:17px;font-weight:700;color:var(--ink);white-space:nowrap}
.nav-list{align-items:center;gap:4px}
.nav-list .nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--ink-2);
  padding:8px 14px;border-radius:999px;transition:all .18s ease;
}
.nav-list .nav-link:hover{color:var(--brand);background:var(--brand-soft)}
.nav-list .nav-link.active{color:var(--brand);font-weight:600;background:var(--brand-soft)}
.nav-list .nav-link.active::after{
  content:"";position:absolute;left:50%;transform:translateX(-50%);
  bottom:-14px;width:22px;height:3px;border-radius:3px;background:var(--brand);
}
.nav-cta{
  margin-left:18px;
  display:inline-flex;align-items:center;justify-content:center;
  padding:12px 20px;border-radius:var(--radius-btn);
  background:var(--brand);color:#fff;font-weight:600;font-size:15px;
  box-shadow:0 6px 16px rgba(31,111,235,.24);
  transition:transform .18s ease,background .18s ease,box-shadow .18s ease;
}
.nav-cta:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(31,111,235,.3)}
.nav-cta:focus-visible{outline:none;box-shadow:0 0 0 4px rgba(31,111,235,.25)}
.nav-toggle{
  border:1px solid var(--line);border-radius:10px;padding:8px 10px;background:#fff;
}
.nav-toggle:focus{box-shadow:0 0 0 4px rgba(31,111,235,.18);outline:none}
.nav-toggle .bars,.nav-toggle .bars::before,.nav-toggle .bars::after{
  display:block;width:20px;height:2px;border-radius:2px;background:var(--ink);
}
.nav-toggle .bars{position:relative}
.nav-toggle .bars::before,.nav-toggle .bars::after{content:"";position:absolute;left:0}
.nav-toggle .bars::before{top:-6px}
.nav-toggle .bars::after{top:6px}

/* ---------- buttons ---------- */
.btn-main,.btn-ghost,.btn-text{display:inline-flex;align-items:center;gap:8px;font-weight:600;transition:all .18s ease}
.btn-main{
  padding:12px 20px;border-radius:var(--radius-btn);background:var(--brand);color:#fff;
  border:1px solid var(--brand);box-shadow:0 6px 16px rgba(31,111,235,.22);
}
.btn-main:hover{background:var(--brand-dark);border-color:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:0 10px 24px rgba(31,111,235,.28)}
.btn-main:focus-visible{outline:none;box-shadow:0 0 0 4px rgba(31,111,235,.25)}
.btn-ghost{
  padding:12px 20px;border-radius:var(--radius-btn);background:#fff;color:var(--brand);
  border:1px solid var(--brand);
}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-dark);transform:translateY(-1px)}
.btn-ghost:focus-visible{outline:none;box-shadow:0 0 0 4px rgba(31,111,235,.18)}
.btn-text{color:var(--brand);padding:0;background:none;border:none;font-size:15px}
.btn-text:hover{text-decoration:underline;color:var(--brand-dark)}
.btn-text i{font-size:12px;transition:transform .18s ease}
.btn-text:hover i{transform:translateX(3px)}

/* ---------- category hero ---------- */
.cat-hero{padding:44px 0 56px;background:linear-gradient(180deg,#FFFFFF 0%,var(--bg) 100%);border-bottom:1px solid var(--line)}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--ink-2);margin-bottom:22px;padding:0;background:none}
.breadcrumb a{color:var(--ink-2)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:#B7C4D1}
.breadcrumb .current{color:var(--ink);font-weight:600}
.cat-hero h1{margin-bottom:16px;max-width:800px}
.cat-hero .lead{font-size:17px;line-height:30px;color:var(--ink-2);max-width:720px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;line-height:20px;font-weight:600;
  padding:6px 12px;border-radius:999px;background:var(--brand-soft);color:var(--brand);
}
.tag--safe{background:var(--safe-soft);color:#0B8C82}
.tag--accent{background:var(--accent-soft);color:#D9691D}
.hero-visual{
  border-radius:20px;overflow:hidden;box-shadow:var(--shadow);border:1px solid var(--line);
  background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;min-height:280px;
  display:flex;align-items:flex-end;padding:22px;
}
.hero-visual__note{
  background:rgba(255,255,255,.94);border-radius:14px;padding:14px 16px;
  border:1px solid var(--line);font-size:14px;line-height:22px;color:var(--ink-2);
  box-shadow:0 6px 18px rgba(18,38,63,.08);
}
.hero-visual__note strong{display:block;color:var(--ink);font-size:15px;margin-bottom:4px}

/* ---------- lists (two columns) ---------- */
.check-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.check-panel{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:28px;box-shadow:var(--shadow);transition:transform .2s ease,box-shadow .2s ease;
}
.check-panel:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.check-panel__head{display:flex;align-items:center;gap:12px;margin-bottom:8px}
.check-panel__icon{
  width:42px;height:42px;border-radius:12px;flex:0 0 42px;
  display:flex;align-items:center;justify-content:center;font-size:17px;
  background:var(--brand-soft);color:var(--brand);
}
.check-panel--warn .check-panel__icon{background:var(--accent-soft);color:#D9691D}
.check-panel--safe .check-panel__icon{background:var(--safe-soft);color:#0B8C82}
.check-panel p.desc{color:var(--ink-2);font-size:15px;line-height:26px;margin-bottom:18px}
.check-list li{
  display:flex;gap:12px;padding:14px 0;border-top:1px dashed var(--line);
  font-size:15px;line-height:26px;color:var(--ink-2);
}
.check-list li:first-child{border-top:none;padding-top:4px}
.check-list i{color:var(--safe);margin-top:5px;font-size:15px}
.check-panel--warn .check-list i{color:var(--accent)}
.check-list strong{color:var(--ink);font-weight:600}

/* ---------- compare table ---------- */
.compare-wrap{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow);padding:8px;overflow:hidden;
}
.table-scroll{overflow-x:auto;border-radius:12px}
table.compare{
  width:100%;min-width:760px;border-collapse:separate;border-spacing:0;
  font-size:15px;line-height:26px;
}
table.compare thead th{
  background:#F1F6FD;color:var(--ink);font-weight:600;font-size:14px;
  text-align:left;padding:14px 18px;border-bottom:1px solid var(--line);white-space:nowrap;
}
table.compare tbody td{
  padding:16px 18px;border-bottom:1px solid var(--line);color:var(--ink-2);vertical-align:top;
}
table.compare tbody tr:last-child td{border-bottom:none}
table.compare tbody tr:hover td{background:#FBFDFF}
table.compare td:first-child{color:var(--ink);font-weight:600}
.pill{display:inline-block;font-size:13px;font-weight:600;padding:4px 12px;border-radius:999px;white-space:nowrap}
.pill--ok{background:var(--safe-soft);color:#0B8C82}
.pill--mid{background:var(--brand-soft);color:var(--brand)}
.pill--warn{background:var(--accent-soft);color:#D9691D}
.compare-note{margin-top:18px;font-size:14px;line-height:24px;color:var(--ink-2);padding:0 8px 12px}

/* ---------- cards / scenarios ---------- */
.card-soft{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow);overflow:hidden;height:100%;
  transition:transform .2s ease,box-shadow .2s ease;
}
.card-soft:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.card-soft__img{aspect-ratio:16/10;object-fit:cover;width:100%}
.card-soft__body{padding:22px}
.card-soft__body h3{margin-bottom:10px}
.card-soft__body p{color:var(--ink-2);font-size:15px;line-height:26px;margin-bottom:14px}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;counter-reset:step}
.step{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow);position:relative;
}
.step__num{
  font-size:13px;font-weight:700;color:var(--brand);background:var(--brand-soft);
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:10px;margin-bottom:14px;
}
.step h3{font-size:17px;margin-bottom:8px}
.step p{font-size:14px;line-height:24px;color:var(--ink-2)}

/* ---------- faq ---------- */
.faq-wrap{max-width:900px}
.accordion-item{
  border:1px solid var(--line);border-radius:14px !important;overflow:hidden;
  margin-bottom:14px;background:#fff;box-shadow:var(--shadow);
}
.accordion-button{
  background:#fff;color:var(--ink);font-weight:600;font-size:16px;line-height:26px;
  padding:20px 22px;box-shadow:none;border-radius:14px !important;position:relative;
}
.accordion-button:not(.collapsed){color:var(--brand);background:#FBFCFF}
.accordion-button::after{
  background-image:none;content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;
  font-size:13px;width:auto;height:auto;transform:rotate(0deg);transition:transform .2s ease;color:var(--brand);
}
.accordion-button:not(.collapsed)::after{transform:rotate(180deg)}
.accordion-button:focus{box-shadow:0 0 0 4px rgba(31,111,235,.14);border-color:var(--brand)}
.accordion-button:not(.collapsed)::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--brand);
}
.accordion-body{
  padding:4px 22px 22px;color:var(--ink-2);font-size:15px;line-height:28px;
}

/* ---------- related categories ---------- */
.rel-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.rel-card{
  display:block;background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px;box-shadow:var(--shadow);transition:all .2s ease;height:100%;
}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:#CFE0F7}
.rel-card i{color:var(--brand);font-size:18px;margin-bottom:12px;display:block}
.rel-card h3{font-size:17px;margin-bottom:8px;color:var(--ink)}
.rel-card p{font-size:14px;line-height:24px;color:var(--ink-2)}
.rel-card.is-current{border-color:var(--brand);box-shadow:0 10px 28px rgba(31,111,235,.14)}
.rel-card.is-current h3{color:var(--brand)}

/* ---------- cta ---------- */
.cta-band{
  background:var(--brand-soft);border:1px solid #D5E5FC;border-radius:20px;
  padding:44px;display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
}
.cta-band h2{font-size:26px;line-height:34px;margin-bottom:10px}
.cta-band p{color:var(--ink-2);font-size:15px;line-height:26px;max-width:560px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- footer ---------- */
.site-footer{background:#0F1E33;color:#C7D3E2;padding:60px 0 24px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:17px;margin-bottom:16px}
.site-footer p{font-size:14px;line-height:24px;color:#9AAEC5}
.site-footer h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px}
.footer-links li{margin-bottom:10px}
.footer-links a{color:#9AAEC5;font-size:14px}
.footer-links a:hover{color:var(--safe)}
.footer-contact li{display:flex;gap:10px;font-size:14px;line-height:24px;color:#9AAEC5;margin-bottom:12px}
.footer-contact i{color:var(--safe);margin-top:6px;font-size:13px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);margin-top:44px;padding-top:22px;
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:13px;color:#8298B2;
}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .rel-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:991.98px){
  :root{--gap-section:56px}
  h1{font-size:32px;line-height:40px}
  h2{font-size:26px;line-height:32px}
  .site-nav{height:64px}
  .navbar-collapse{
    background:#fff;border:1px solid var(--line);border-radius:16px;
    padding:14px;margin-top:12px;box-shadow:var(--shadow-hover);
  }
  .nav-list{align-items:stretch;gap:2px}
  .nav-list .nav-link{padding:12px 14px;border-radius:10px}
  .nav-list .nav-link.active::after{display:none}
  .nav-cta{margin:12px 0 4px;width:100%}
  .check-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .hero-visual{min-height:220px;margin-top:32px}
}
@media (max-width:767.98px){
  .cta-band{padding:30px}
  .footer-grid{grid-template-columns:1fr}
  .rel-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
}
@media (max-width:575.98px){
  :root{--gap-section:40px}
  h1{font-size:28px;line-height:36px}
  h2{font-size:23px;line-height:30px}
  .brand__text{font-size:15px;white-space:normal;line-height:20px}
  .cat-hero{padding:32px 0 40px}
  .check-panel{padding:22px}
  .cta-actions{width:100%}
  .cta-actions .btn-main,.cta-actions .btn-ghost{width:100%;justify-content:center}
}

/* roulang page: category3 */
:root{
  --primary:#1F6FEB;
  --primary-dark:#1758BE;
  --primary-soft:#E8F1FE;
  --accent:#12B3A6;
  --accent-soft:#E2F7F5;
  --warn:#FF8A3D;
  --bg:#F7FAFC;
  --card:#FFFFFF;
  --text:#12263F;
  --text-2:#5B6B7C;
  --border:#E4EDF5;
  --footer-bg:#0F1E33;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-card:0 8px 24px rgba(18,38,63,.08);
  --shadow-hover:0 12px 32px rgba(18,38,63,.12);
  --gutter:24px;
  --section:80px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",Inter,system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:28px;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--primary);text-decoration:none;transition:color .2s ease,background-color .2s ease;}
a:hover{color:var(--primary-dark);}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;color:var(--text);letter-spacing:.2px;}
h1{font-size:40px;line-height:48px;font-weight:700;}
h2{font-size:30px;line-height:36px;font-weight:700;}
h3{font-size:20px;line-height:24px;font-weight:600;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}

.container{max-width:1200px;padding-left:20px;padding-right:20px;margin:0 auto;}
.section{padding:var(--section) 0;}
.section--tight{padding:56px 0;}
.section--soft{background:#fff;}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:14px;line-height:22px;color:var(--primary);background:var(--primary-soft);border-radius:999px;padding:6px 14px;font-weight:600;margin-bottom:16px;}
.section-head h2{margin-bottom:14px;}
.section-head p{color:var(--text-2);font-size:16px;line-height:28px;}

/* header */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(255,255,255,.95);
  backdrop-filter:saturate(180%) blur(8px);
  border-bottom:1px solid var(--border);
}
.site-nav{height:68px;padding:0;display:flex;align-items:center;flex-wrap:nowrap;}
.brand{display:flex;align-items:center;gap:10px;padding:0;margin-right:16px;}
.brand__mark{
  width:36px;height:36px;border-radius:12px;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  color:#fff;font-weight:700;font-size:18px;flex:0 0 auto;
  box-shadow:0 6px 16px rgba(31,111,235,.28);
}
.brand__text{font-size:18px;font-weight:700;color:var(--text);line-height:24px;white-space:nowrap;}
.nav-list{align-items:center;gap:6px;}
.nav-list .nav-link{
  color:var(--text-2);font-size:15px;font-weight:600;
  padding:8px 14px;border-radius:999px;position:relative;
}
.nav-list .nav-link:hover{color:var(--primary);background:var(--primary-soft);}
.nav-list .nav-link.active{color:var(--primary);background:var(--primary-soft);}
.nav-list .nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:3px;border-radius:3px;background:var(--primary);
}
.nav-cta{
  margin-left:14px;display:inline-flex;align-items:center;justify-content:center;
  padding:10px 20px;border-radius:var(--radius-btn);
  background:var(--primary);color:#fff;font-weight:600;font-size:15px;
  box-shadow:0 6px 16px rgba(31,111,235,.24);
  transition:transform .2s ease,background-color .2s ease,box-shadow .2s ease;
}
.nav-cta:hover{background:var(--primary-dark);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(31,111,235,.3);}
.nav-toggle{border:1px solid var(--border);border-radius:10px;padding:8px 10px;background:#fff;}
.nav-toggle:focus{box-shadow:0 0 0 3px var(--primary-soft);}
.nav-toggle .bars{display:block;width:20px;height:2px;background:var(--text);position:relative;border-radius:2px;}
.nav-toggle .bars::before,.nav-toggle .bars::after{content:"";position:absolute;left:0;width:20px;height:2px;background:var(--text);border-radius:2px;}
.nav-toggle .bars::before{top:-6px;}
.nav-toggle .bars::after{top:6px;}

/* buttons */
.btn-main,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 20px;border-radius:var(--radius-btn);font-size:15px;font-weight:600;
  transition:transform .2s ease,background-color .2s ease,box-shadow .2s ease,color .2s ease;
  border:1px solid transparent;cursor:pointer;
}
.btn-main{background:var(--primary);color:#fff;box-shadow:0 8px 20px rgba(31,111,235,.22);}
.btn-main:hover{background:var(--primary-dark);color:#fff;transform:translateY(-1px);box-shadow:0 12px 26px rgba(31,111,235,.28);}
.btn-main:focus{box-shadow:0 0 0 4px rgba(31,111,235,.22);}
.btn-ghost{background:#fff;color:var(--primary);border-color:#C9DDFB;}
.btn-ghost:hover{background:var(--primary-soft);color:var(--primary-dark);transform:translateY(-1px);}
.link-more{font-weight:600;font-size:15px;display:inline-flex;align-items:center;gap:6px;}
.link-more:hover{text-decoration:underline;}

/* badges */
.chip{display:inline-flex;align-items:center;gap:6px;border-radius:999px;padding:4px 12px;font-size:13px;font-weight:600;line-height:20px;}
.chip--blue{background:var(--primary-soft);color:var(--primary);}
.chip--teal{background:var(--accent-soft);color:#0B8377;}
.chip--warn{background:#FFF0E6;color:#C25C12;}
.chip--line{background:#fff;border:1px solid var(--border);color:var(--text-2);}

/* hero */
.cat-hero{
  position:relative;background:#fff;border-bottom:1px solid var(--border);
  padding:56px 0 64px;overflow:hidden;
}
.cat-hero::before{
  content:"";position:absolute;right:-140px;top:-120px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle at 30% 30%,rgba(18,179,166,.16),rgba(31,111,235,.06) 60%,transparent 70%);
}
.cat-hero__grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;position:relative;}
.breadcrumb-line{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:14px;color:var(--text-2);margin-bottom:18px;}
.breadcrumb-line a{color:var(--text-2);font-weight:600;}
.breadcrumb-line a:hover{color:var(--primary);}
.breadcrumb-line span.sep{color:#B7C5D3;}
.cat-hero h1{margin-bottom:16px;}
.cat-hero h1 em{font-style:normal;color:var(--primary);}
.cat-hero__lead{color:var(--text-2);font-size:17px;line-height:29px;margin-bottom:24px;max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:24px;}
.hero-facts{display:flex;flex-wrap:wrap;gap:10px;}
.cat-hero__media{position:relative;}
.cat-hero__media img{width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:20px;box-shadow:var(--shadow-card);}
.cat-hero__float{
  position:absolute;left:-14px;bottom:22px;background:#fff;border:1px solid var(--border);
  border-radius:14px;padding:12px 16px;box-shadow:var(--shadow-card);max-width:230px;
}
.cat-hero__float strong{display:block;font-size:15px;margin-bottom:2px;}
.cat-hero__float span{font-size:13px;line-height:20px;color:var(--text-2);}

/* metric strip */
.metric-strip{
  display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gutter);
  margin-top:-32px;position:relative;z-index:2;
}
.metric{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  padding:20px 22px;box-shadow:var(--shadow-card);display:flex;gap:14px;align-items:flex-start;
  transition:transform .2s ease,box-shadow .2s ease;
}
.metric:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.metric i{color:var(--accent);font-size:20px;margin-top:4px;}
.metric strong{display:block;font-size:16px;margin-bottom:4px;}
.metric span{font-size:14px;line-height:22px;color:var(--text-2);}

/* timeline */
.timeline{position:relative;padding-left:34px;margin-top:8px;}
.timeline::before{
  content:"";position:absolute;left:9px;top:6px;bottom:6px;width:2px;
  background:linear-gradient(180deg,var(--primary),var(--accent) 70%,#E4EDF5);
  border-radius:2px;
}
.tl-item{position:relative;padding-bottom:28px;}
.tl-item:last-child{padding-bottom:0;}
.tl-dot{
  position:absolute;left:-34px;top:22px;width:20px;height:20px;border-radius:50%;
  background:#fff;border:3px solid var(--primary);box-shadow:0 0 0 4px rgba(31,111,235,.1);
}
.tl-item:nth-child(even) .tl-dot{border-color:var(--accent);box-shadow:0 0 0 4px rgba(18,179,166,.12);}
.tl-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  padding:24px 26px;box-shadow:var(--shadow-card);transition:transform .2s ease,box-shadow .2s ease;
}
.tl-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.tl-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:12px;}
.tl-step{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:10px;background:var(--primary-soft);
  color:var(--primary);font-weight:700;font-size:14px;letter-spacing:.5px;
}
.tl-card h3{margin-bottom:10px;}
.tl-card p{color:var(--text-2);font-size:15px;line-height:26px;}
.tl-points{margin-top:14px;display:grid;gap:8px;}
.tl-points li{display:flex;gap:10px;font-size:15px;line-height:26px;color:var(--text-2);}
.tl-points li i{color:var(--accent);margin-top:6px;font-size:12px;}

/* update log */
.log-wrap{background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);box-shadow:var(--shadow-card);overflow:hidden;}
.log-head{padding:22px 26px;border-bottom:1px solid var(--border);display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;background:linear-gradient(180deg,#FBFDFF,#fff);}
.log-head h3{margin:0;}
.log-list{padding:6px 0;}
.log-row{
  display:grid;grid-template-columns:150px 1fr;gap:20px;
  padding:18px 26px;border-bottom:1px dashed var(--border);
  transition:background-color .2s ease;
}
.log-row:last-child{border-bottom:0;}
.log-row:hover{background:#F9FCFF;}
.log-date{font-size:14px;font-weight:700;color:var(--primary);line-height:24px;}
.log-date span{display:block;font-weight:600;color:var(--text-2);font-size:13px;}
.log-body strong{display:block;font-size:16px;margin-bottom:6px;}
.log-body p{color:var(--text-2);font-size:15px;line-height:26px;}

/* split feature */
.split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
.split--rev .split__media{order:2;}
.split__media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius-card);box-shadow:var(--shadow-card);}
.split__body h2{margin-bottom:16px;}
.split__body p{color:var(--text-2);margin-bottom:16px;}
.check-list{display:grid;gap:12px;margin:20px 0 24px;}
.check-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;line-height:26px;}
.check-list li i{
  width:22px;height:22px;border-radius:50%;background:var(--accent-soft);color:#0B8377;
  display:inline-flex;align-items:center;justify-content:center;font-size:11px;flex:0 0 auto;margin-top:3px;
}
.warn-list li i{background:#FFF0E6;color:#C25C12;}

/* faq */
.faq-accordion .accordion-item{
  border:1px solid var(--border);border-radius:14px;background:#fff;margin-bottom:14px;overflow:hidden;
  box-shadow:0 4px 14px rgba(18,38,63,.05);
}
.faq-accordion .accordion-button{
  font-size:17px;font-weight:600;color:var(--text);background:#fff;padding:20px 22px;
  box-shadow:none;border-radius:14px;
}
.faq-accordion .accordion-button:not(.collapsed){color:var(--primary);background:#fff;box-shadow:none;}
.faq-accordion .accordion-button:focus{box-shadow:0 0 0 3px var(--primary-soft);border-color:transparent;}
.faq-accordion .accordion-button::after{
  background-image:none;content:"\2b";font-family:"Font Awesome 6 Free";font-weight:900;
  color:var(--primary);width:auto;height:auto;transform:none;font-size:14px;line-height:1;
}
.faq-accordion .accordion-button:not(.collapsed)::after{content:"\f068";transform:none;}
.faq-accordion .accordion-item:has(.accordion-button:not(.collapsed)){border-left:3px solid var(--primary);}
.faq-accordion .accordion-body{padding:0 22px 22px;color:var(--text-2);font-size:15px;line-height:27px;}

/* related cards */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gutter);}
.rel-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);overflow:hidden;
  box-shadow:var(--shadow-card);display:flex;flex-direction:column;
  transition:transform .2s ease,box-shadow .2s ease;
}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.rel-card img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.rel-card__body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.rel-card__body h3{font-size:18px;line-height:26px;}
.rel-card__body p{color:var(--text-2);font-size:14px;line-height:24px;flex:1;}

/* cta */
.cta-band{
  background:linear-gradient(120deg,var(--primary-soft),#F2FBF9 60%,#fff);
  border:1px solid var(--border);border-radius:20px;padding:42px 44px;
  display:grid;grid-template-columns:1fr auto;gap:28px;align-items:center;
}
.cta-band h2{font-size:26px;line-height:34px;margin-bottom:10px;}
.cta-band p{color:var(--text-2);font-size:15px;line-height:26px;max-width:640px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* footer */
.site-footer{background:var(--footer-bg);color:#C7D3E1;padding:64px 0 28px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px;padding-bottom:36px;border-bottom:1px solid rgba(255,255,255,.12);}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:17px;margin-bottom:14px;}
.footer-brand .brand__mark{width:32px;height:32px;border-radius:10px;font-size:16px;}
.site-footer p{color:#9FB0C4;font-size:14px;line-height:24px;}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:700;}
.footer-links li{margin-bottom:10px;}
.footer-links a{color:#9FB0C4;font-size:14px;}
.footer-links a:hover{color:var(--accent);}
.footer-contact li{display:flex;gap:10px;margin-bottom:12px;color:#9FB0C4;font-size:14px;line-height:24px;}
.footer-contact i{color:var(--accent);margin-top:5px;}
.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;padding-top:22px;color:#7F92A8;font-size:13px;}

@media (max-width:1199px){
  .cat-hero__grid{gap:36px;}
}
@media (max-width:991px){
  :root{--section:56px;}
  h1{font-size:32px;line-height:40px;}
  h2{font-size:25px;line-height:32px;}
  .nav-list{align-items:flex-start;gap:2px;padding-top:12px;}
  .nav-list .nav-link{padding:10px 12px;width:100%;border-radius:10px;}
  .nav-list .nav-link.active::after{display:none;}
  .nav-cta{margin:12px 0 16px;width:100%;}
  .site-nav{height:auto;min-height:68px;flex-wrap:wrap;}
  .cat-hero{padding:36px 0 40px;}
  .cat-hero__grid{grid-template-columns:1fr;}
  .cat-hero__media{order:-1;}
  .cat-hero__media img{aspect-ratio:16/10;}
  .cat-hero__float{left:12px;bottom:12px;}
  .metric-strip{grid-template-columns:1fr;margin-top:24px;}
  .split{grid-template-columns:1fr;gap:28px;}
  .split--rev .split__media{order:0;}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .cta-band{grid-template-columns:1fr;padding:32px 26px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .log-row{grid-template-columns:1fr;gap:8px;}
}
@media (max-width:575px){
  :root{--section:40px;}
  body{font-size:15px;line-height:26px;}
  h1{font-size:30px;line-height:36px;}
  h2{font-size:23px;line-height:30px;}
  .brand__text{font-size:15px;line-height:20px;white-space:normal;max-width:170px;}
  .cat-hero__lead{font-size:16px;line-height:27px;}
  .card-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .timeline{padding-left:26px;}
  .tl-dot{left:-26px;width:16px;height:16px;border-width:3px;top:24px;}
  .tl-card{padding:20px;}
  .cta-actions .btn-main,.cta-actions .btn-ghost{width:100%;}
  .hero-actions .btn-main,.hero-actions .btn-ghost{width:100%;}
}

/* roulang page: category4 */
:root{
  --brand:#1F6FEB;
  --brand-dark:#1558BF;
  --brand-soft:#EAF2FE;
  --safe:#12B3A6;
  --safe-soft:#E4F7F5;
  --accent:#FF8A3D;
  --bg:#F7FAFC;
  --card:#FFFFFF;
  --text:#12263F;
  --text-2:#5B6B7C;
  --line:#E4EDF5;
  --footer:#0F1E33;
  --r-card:16px;
  --r-btn:10px;
  --r-img:12px;
  --sh-card:0 8px 24px rgba(18,38,63,.08);
  --sh-hover:0 12px 32px rgba(18,38,63,.12);
  --sp-section:80px;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Inter",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--brand-dark);}
h1,h2,h3,h4{margin:0 0 14px;font-weight:700;color:var(--text);letter-spacing:.2px;}
h1{font-size:40px;line-height:1.2;}
h2{font-size:30px;line-height:1.25;}
h3{font-size:20px;line-height:1.35;font-weight:600;}
p{margin:0 0 14px;color:var(--text-2);}
ul{padding-left:0;list-style:none;margin:0;}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
:focus-visible{outline:3px solid rgba(31,111,235,.35);outline-offset:2px;}
.container{max-width:1200px;padding-left:18px;padding-right:18px;}
.section{padding-top:var(--sp-section);padding-bottom:var(--sp-section);}
.section--tight{padding-top:56px;padding-bottom:56px;}
.section-head{max-width:760px;margin-bottom:36px;}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.6px;color:var(--safe);
  background:var(--safe-soft);border-radius:999px;padding:6px 14px;margin-bottom:14px;
}
.section-head p{margin-bottom:0;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(255,255,255,.95);
  backdrop-filter:saturate(180%) blur(10px);
  border-bottom:1px solid var(--line);
}
.site-nav{height:68px;display:flex;align-items:center;padding:0;flex-wrap:wrap;}
.brand{display:flex;align-items:center;gap:10px;padding:0;margin-right:auto;}
.brand__mark{
  width:36px;height:36px;border-radius:11px;
  background:linear-gradient(135deg,var(--brand),var(--safe));
  color:#fff;font-weight:700;font-size:18px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px rgba(31,111,235,.28);
  flex:0 0 auto;
}
.brand__text{font-size:17px;font-weight:700;color:var(--text);white-space:nowrap;}
.nav-list{align-items:center;gap:4px;}
.nav-list .nav-link{
  position:relative;
  color:var(--text-2);font-size:15px;font-weight:500;
  padding:8px 14px;border-radius:999px;
  transition:color .18s ease,background .18s ease;
}
.nav-list .nav-link:hover{color:var(--brand);background:var(--brand-soft);}
.nav-list .nav-link.active{color:var(--brand);font-weight:600;background:var(--brand-soft);}
.nav-list .nav-link.active::after{
  content:"";position:absolute;left:50%;transform:translateX(-50%);
  bottom:0;width:20px;height:3px;border-radius:3px;background:var(--brand);
}
.nav-cta{
  margin-left:16px;
  display:inline-flex;align-items:center;justify-content:center;
  padding:10px 20px;border-radius:var(--r-btn);
  background:var(--brand);color:#fff;font-size:15px;font-weight:600;
  transition:background .18s ease,transform .18s ease,box-shadow .18s ease;
  box-shadow:0 6px 18px rgba(31,111,235,.22);
}
.nav-cta:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);}
.nav-toggle{
  border:1px solid var(--line);border-radius:var(--r-btn);
  width:44px;height:40px;padding:0;background:#fff;
  display:flex;align-items:center;justify-content:center;
}
.nav-toggle:focus{box-shadow:0 0 0 3px rgba(31,111,235,.18);}
.bars,.bars::before,.bars::after{
  display:block;width:18px;height:2px;border-radius:2px;background:var(--text);
  position:relative;transition:background .18s ease;
}
.bars::before,.bars::after{content:"";position:absolute;left:0;}
.bars::before{top:-6px;}
.bars::after{top:6px;}
@media (max-width:991.98px){
  .site-nav{height:auto;padding:12px 0;}
  .brand__text{font-size:15px;white-space:normal;}
  .nav-list{margin-top:14px;gap:2px;width:100%;}
  .nav-list .nav-link{padding:10px 12px;border-radius:10px;}
  .nav-list .nav-link.active::after{display:none;}
  .nav-list .nav-link.active{background:var(--brand-soft);}
  .nav-cta{margin:12px 0 4px;width:100%;}
}

/* ---------- buttons ---------- */
.btn-main,.btn-ghost,.btn-text{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 20px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;
  transition:all .18s ease;
}
.btn-main{background:var(--brand);color:#fff;box-shadow:0 8px 20px rgba(31,111,235,.22);}
.btn-main:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:0 12px 26px rgba(31,111,235,.28);}
.btn-main:focus{box-shadow:0 0 0 3px rgba(31,111,235,.3);}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--brand);}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-dark);transform:translateY(-1px);}
.btn-text{padding:6px 0;color:var(--brand);font-weight:600;}
.btn-text:hover{text-decoration:underline;color:var(--brand-dark);}

/* ---------- badges / chips ---------- */
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;
  font-size:13px;font-weight:600;
  background:var(--brand-soft);color:var(--brand);
}
.chip--safe{background:var(--safe-soft);color:#0E8C82;}
.chip--accent{background:#FFF1E6;color:#C25A12;}

/* ---------- hero (small) ---------- */
.page-hero{
  position:relative;
  padding:56px 0 64px;
  background:
    radial-gradient(900px 380px at 88% -10%, rgba(18,179,166,.14), transparent 65%),
    radial-gradient(700px 320px at 0% 0%, rgba(31,111,235,.12), transparent 60%),
    #fff;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.crumb{font-size:14px;color:var(--text-2);margin-bottom:16px;}
.crumb a{color:var(--text-2);}
.crumb a:hover{color:var(--brand);}
.crumb span.sep{margin:0 8px;color:#B8C6D4;}
.page-hero h1{margin-bottom:16px;}
.page-hero h1 .hl{color:var(--brand);}
.page-hero .lead{font-size:17px;max-width:640px;margin-bottom:24px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;}
.hero-media{
  position:relative;border-radius:20px;overflow:hidden;
  box-shadow:var(--sh-card);border:1px solid var(--line);background:#fff;
}
.hero-media img{width:100%;height:320px;object-fit:cover;}
.hero-media .tag-float{
  position:absolute;left:16px;bottom:16px;
  background:rgba(255,255,255,.94);border-radius:999px;
  padding:8px 16px;font-size:13px;font-weight:600;color:var(--brand);
  box-shadow:0 8px 20px rgba(18,38,63,.14);
}
.metrics{display:flex;flex-wrap:wrap;gap:28px;margin-top:28px;}
.metric{display:flex;align-items:center;gap:12px;}
.metric i{
  width:42px;height:42px;border-radius:12px;flex:0 0 auto;
  display:flex;align-items:center;justify-content:center;
  background:var(--brand-soft);color:var(--brand);font-size:17px;
}
.metric b{display:block;font-size:16px;color:var(--text);}
.metric small{color:var(--text-2);font-size:13px;}

/* ---------- generic card ---------- */
.card-soft{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-card);
  transition:transform .18s ease,box-shadow .18s ease;
  height:100%;
}
.card-soft:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);}
.card-soft .thumb{border-radius:var(--r-card) var(--r-card) 0 0;overflow:hidden;}
.card-soft .thumb img{width:100%;height:180px;object-fit:cover;}
.card-soft .body{padding:22px 22px 24px;}
.card-soft h3{margin-bottom:8px;}
.card-soft p{font-size:15px;margin-bottom:12px;}

/* ---------- faq accordion ---------- */
.faq-accordion .accordion-item{
  background:#fff;border:1px solid var(--line);border-radius:14px;
  margin-bottom:14px;overflow:hidden;box-shadow:var(--sh-card);
}
.faq-accordion .accordion-button{
  background:#fff;color:var(--text);font-size:17px;font-weight:600;
  padding:20px 22px;border:0;box-shadow:none;line-height:1.5;
}
.faq-accordion .accordion-button:not(.collapsed){
  color:var(--brand);background:var(--brand-soft);
  border-left:3px solid var(--brand);
  padding-left:19px;
}
.faq-accordion .accordion-button:focus{box-shadow:0 0 0 3px rgba(31,111,235,.16);}
.faq-accordion .accordion-button::after{
  background-image:none;
  content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;
  font-size:13px;color:var(--text-2);
  width:auto;height:auto;transform:none;transition:transform .2s ease;
}
.faq-accordion .accordion-button:not(.collapsed)::after{color:var(--brand);transform:rotate(180deg);}
.faq-accordion .accordion-body{
  padding:6px 22px 22px;color:var(--text-2);font-size:15.5px;line-height:1.8;
  background:#fff;
}

/* ---------- side info cards ---------- */
.side-stack{display:flex;flex-direction:column;gap:22px;}
.info-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-card);overflow:hidden;
}
.info-card img{width:100%;height:170px;object-fit:cover;}
.info-card .body{padding:20px 22px 22px;}
.info-card h3{font-size:18px;margin-bottom:8px;}
.info-card p{font-size:14.5px;margin-bottom:10px;}

/* ---------- split feature blocks ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;}
.split + .split{margin-top:64px;}
.split--rev .split__media{order:2;}
.split__media img{width:100%;height:300px;object-fit:cover;border-radius:var(--r-card);box-shadow:var(--sh-card);}
.split__text .num{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:10px;background:var(--brand-soft);
  color:var(--brand);font-weight:700;font-size:15px;margin-bottom:14px;
}
.check-list li{
  display:flex;gap:10px;font-size:15px;color:var(--text-2);margin-bottom:10px;
}
.check-list li i{color:var(--safe);margin-top:5px;font-size:14px;}

/* ---------- related nav ---------- */
.related-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.related-item{
  display:block;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--sh-card);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.related-item:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);border-color:#CFE0F5;}
.related-item i{color:var(--brand);font-size:18px;margin-bottom:12px;display:block;}
.related-item b{display:block;font-size:16px;color:var(--text);margin-bottom:6px;}
.related-item span{font-size:14px;color:var(--text-2);}
.related-item.is-current{border-color:var(--brand);background:var(--brand-soft);}

/* ---------- cta band ---------- */
.cta-band{
  background:linear-gradient(135deg,#EAF2FE,#E4F7F5);
  border:1px solid var(--line);border-radius:20px;
  padding:48px 40px;text-align:center;
}
.cta-band h2{margin-bottom:12px;}
.cta-band p{max-width:620px;margin:0 auto 24px;}
.cta-band .hero-actions{justify-content:center;}

/* ---------- footer ---------- */
.site-footer{
  background:var(--footer);color:#C9D6E4;padding-top:64px;margin-top:80px;
}
.site-footer h4{color:#fff;font-size:16px;margin-bottom:18px;font-weight:600;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:36px;}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:17px;margin-bottom:16px;}
.footer-brand .brand__mark{box-shadow:none;}
.site-footer p{color:#9DB0C4;font-size:14.5px;line-height:1.8;}
.footer-links li{margin-bottom:10px;}
.footer-links a{color:#C9D6E4;font-size:14.5px;transition:color .18s ease;}
.footer-links a:hover{color:var(--safe);}
.footer-contact li{display:flex;gap:10px;font-size:14.5px;color:#C9D6E4;margin-bottom:12px;line-height:1.7;}
.footer-contact i{color:var(--safe);margin-top:5px;}
.footer-bottom{
  margin-top:52px;padding:22px 0;border-top:1px solid rgba(255,255,255,.1);
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;
  font-size:13.5px;color:#8CA0B6;
}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  :root{--sp-section:64px;}
  .related-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:991.98px){
  :root{--sp-section:56px;}
  h1{font-size:32px;}
  h2{font-size:25px;}
  .hero-media img{height:260px;}
  .split{grid-template-columns:1fr;gap:26px;}
  .split--rev .split__media{order:0;}
  .split__media img{height:240px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
}
@media (max-width:575.98px){
  :root{--sp-section:40px;}
  h1{font-size:30px;line-height:1.25;}
  h2{font-size:24px;}
  h3{font-size:18px;}
  .page-hero{padding:36px 0 44px;}
  .hero-media img{height:200px;}
  .metrics{gap:18px;}
  .card-soft .thumb img{height:160px;}
  .related-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .cta-band{padding:34px 22px;}
  .faq-accordion .accordion-button{font-size:16px;padding:16px 18px;}
  .faq-accordion .accordion-button:not(.collapsed){padding-left:15px;}
  .faq-accordion .accordion-body{padding:4px 18px 18px;}
}