/* roulang page: index */
:root{
  --brand:#1D5BFF;
  --brand-dark:#0F3FBF;
  --brand-soft:rgba(29,91,255,.10);
  --orange:#FF6B35;
  --orange-dark:#E8551F;
  --teal:#12B39A;
  --teal-soft:rgba(18,179,154,.12);
  --bg:#F5F7FB;
  --surface:#FFFFFF;
  --alt:#EEF3FC;
  --footer-bg:#0B1B33;
  --text:#101828;
  --muted:#475467;
  --faint:#98A2B3;
  --border:#E4E9F2;
  --divider:#EDF1F7;
  --r-btn:10px;
  --r-tag:999px;
  --r-sm:12px;
  --r-card:16px;
  --r-hero:20px;
  --r-img:14px;
  --sh-1:0 1px 2px rgba(16,24,40,.05);
  --sh-2:0 8px 24px rgba(16,24,40,.08);
  --sh-3:0 16px 40px rgba(29,91,255,.14);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.75;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;cursor:pointer;border:0;background:none;}
h1,h2,h3,h4,p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
input,textarea,select{font:inherit;color:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.section{padding:88px 0;}
.section--alt{background:var(--alt);}
.section--white{background:var(--surface);}
.section__head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;}
.section__head--center{flex-direction:column;align-items:center;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--brand);
  background:var(--brand-soft);border-radius:var(--r-tag);
  padding:5px 12px;margin-bottom:14px;letter-spacing:.4px;
}
h1,h2,h3,h4{line-height:1.32;letter-spacing:-.2px;}
.h2{
  font-size:32px;font-weight:700;position:relative;padding-left:16px;
}
.h2::before{
  content:"";position:absolute;left:0;top:8px;bottom:8px;width:4px;
  border-radius:999px;background:var(--brand);
}
.section__desc{margin-top:14px;color:var(--muted);font-size:16px;max-width:720px;}
.h3{font-size:20px;font-weight:600;}
.card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:28px;
  transition:box-shadow .18s ease,transform .18s ease,border-color .18s ease;
}
.card:hover{box-shadow:var(--sh-2);transform:translateY(-2px);border-color:rgba(29,91,255,.3);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;white-space:nowrap;
  transition:background .18s ease,color .18s ease,box-shadow .18s ease,transform .18s ease,border-color .18s ease;
}
.btn--lg{height:48px;padding:0 28px;}
.btn--primary{background:var(--brand);color:#fff;box-shadow:var(--sh-1);}
.btn--primary:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:var(--sh-3);}
.btn--orange{background:var(--orange);color:#fff;box-shadow:var(--sh-1);}
.btn--orange:hover{background:var(--orange-dark);transform:translateY(-1px);box-shadow:0 12px 28px rgba(255,107,53,.28);}
.btn--ghost{background:#fff;color:var(--brand);border:1px solid var(--brand);}
.btn--ghost:hover{background:var(--brand-soft);transform:translateY(-1px);}
.btn--light{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.55);}
.btn--light:hover{background:rgba(255,255,255,.12);border-color:#fff;}
.btn:active{transform:translateY(0);}
.btn[disabled],.btn.is-disabled{opacity:.45;transform:none;box-shadow:none;cursor:not-allowed;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand);font-size:14px;font-weight:600;
}
.link-arrow span{transition:transform .18s ease;}
.link-arrow:hover span{transform:translateX(3px);}
.link-arrow:hover{color:var(--brand-dark);}
.badge{
  display:inline-flex;align-items:center;
  padding:4px 10px;border-radius:var(--r-tag);
  font-size:12px;font-weight:600;line-height:1.6;
}
.badge--blue{background:var(--brand-soft);color:var(--brand-dark);}
.badge--teal{background:var(--teal-soft);color:#0B7C6B;}
.badge--orange{background:rgba(255,107,53,.12);color:#C64A17;}
/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:120;background:#fff;
  border-bottom:1px solid var(--border);
  transition:box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh-2);}
.nav{
  max-width:var(--container);margin:0 auto;padding:0 24px;
  height:72px;display:flex;align-items:center;gap:28px;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand__mark{
  width:34px;height:34px;border-radius:10px;background:var(--brand);
  color:#fff;display:grid;place-items:center;font-size:14px;font-weight:700;letter-spacing:-.5px;
}
.brand__text{font-size:16px;font-weight:700;letter-spacing:-.2px;white-space:nowrap;}
.brand__text i{font-style:normal;color:var(--brand);}
.nav__menu{display:flex;align-items:center;gap:4px;margin-left:8px;}
.nav__link{
  display:inline-flex;align-items:center;height:38px;padding:0 14px;
  border-radius:var(--r-tag);font-size:15px;color:var(--muted);font-weight:500;
  position:relative;transition:color .16s ease,background .16s ease;
}
.nav__link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;
  background:var(--brand);border-radius:2px;transform:scaleX(0);
  transition:transform .16s ease;transform-origin:left;
}
.nav__link:hover{color:var(--brand);}
.nav__link:hover::after{transform:scaleX(1);}
.nav__link.is-active{background:var(--brand-soft);color:var(--brand);font-weight:600;}
.nav__link.is-active::after{transform:scaleX(0);}
.nav__actions{margin-left:auto;display:flex;align-items:center;gap:16px;}
.nav__text-link{font-size:14px;color:var(--muted);font-weight:500;transition:color .16s ease;}
.nav__text-link:hover{color:var(--brand);}
.nav__burger{
  display:none;width:42px;height:42px;border-radius:10px;
  align-items:center;justify-content:center;border:1px solid var(--border);
}
.nav__burger span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;position:relative;transition:.2s ease;}
.nav__burger span::before,.nav__burger span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);border-radius:2px;transition:.2s ease;
}
.nav__burger span::before{top:-6px;}
.nav__burger span::after{top:6px;}
.nav__burger.is-open span{background:transparent;}
.nav__burger.is-open span::before{top:0;transform:rotate(45deg);}
.nav__burger.is-open span::after{top:0;transform:rotate(-45deg);}
/* drawer */
.drawer{
  position:fixed;inset:0;z-index:130;background:#fff;
  transform:translateX(100%);transition:transform .26s ease;
  display:flex;flex-direction:column;padding:20px 24px 28px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer__top{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;}
.drawer__close{width:42px;height:42px;border-radius:10px;border:1px solid var(--border);display:grid;place-items:center;font-size:20px;color:var(--muted);}
.drawer__link{
  display:flex;align-items:center;height:56px;font-size:18px;font-weight:500;
  border-bottom:1px solid var(--divider);color:var(--text);
}
.drawer__link.is-active{color:var(--brand);font-weight:600;}
.drawer__cta{margin-top:auto;padding-top:24px;}
.drawer__cta .btn{width:100%;}
.scrim{
  position:fixed;inset:0;background:rgba(11,27,51,.45);z-index:125;
  opacity:0;pointer-events:none;transition:opacity .26s ease;
}
.scrim.is-open{opacity:1;pointer-events:auto;}
body.no-scroll{overflow:hidden;}
/* ---------- hero ---------- */
.hero{
  position:relative;background:var(--surface);overflow:hidden;
  border-bottom:1px solid var(--border);
}
.hero::before{
  content:"";position:absolute;right:-120px;top:-160px;width:520px;height:520px;
  background:radial-gradient(circle,rgba(29,91,255,.10) 0%,rgba(29,91,255,0) 68%);
  pointer-events:none;
}
.hero__inner{
  position:relative;max-width:var(--container);margin:0 auto;padding:72px 24px 76px;
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
}
.hero__title{
  font-size:clamp(30px,3.6vw,44px);font-weight:700;line-height:1.24;letter-spacing:-.6px;
}
.hero__title em{font-style:normal;color:var(--brand-dark);}
.hero__subtitle{
  margin-top:18px;font-size:17px;color:var(--muted);max-width:520px;line-height:1.8;
}
.hero__actions{display:flex;gap:14px;margin-top:30px;flex-wrap:wrap;}
.hero__trust{display:flex;gap:26px;margin-top:34px;flex-wrap:wrap;}
.hero__trust-item{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--muted);}
.hero__trust-item i{
  width:22px;height:22px;border-radius:7px;background:var(--teal-soft);
  display:grid;place-items:center;color:var(--teal);font-size:12px;font-weight:700;font-style:normal;
}
.hero__visual{position:relative;}
.hero__visual img{
  width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-hero);
  box-shadow:var(--sh-2);background:var(--alt);
}
.hero__float{
  position:absolute;left:20px;bottom:-22px;background:#fff;border:1px solid var(--border);
  border-radius:var(--r-card);box-shadow:var(--sh-2);padding:14px 18px;
  display:flex;align-items:center;gap:12px;
}
.hero__float-dot{width:10px;height:10px;border-radius:50%;background:var(--teal);flex-shrink:0;}
.hero__float strong{display:block;font-size:14px;font-weight:600;}
.hero__float span{display:block;font-size:12px;color:var(--faint);}
/* ---------- metrics ---------- */
.metrics{padding:56px 0;background:var(--surface);}
.metrics__grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.metric{
  background:var(--bg);border:1px solid var(--border);border-radius:var(--r-card);
  padding:24px;transition:box-shadow .18s ease,transform .18s ease;
}
.metric:hover{box-shadow:var(--sh-2);transform:translateY(-2px);}
.metric__num{font-size:30px;font-weight:700;color:var(--brand);letter-spacing:-.6px;line-height:1.2;}
.metric__num small{font-size:15px;font-weight:600;margin-left:2px;}
.metric__label{margin-top:8px;font-size:14px;color:var(--muted);}
/* ---------- pain ---------- */
.pain__grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.pain-card{
  background:var(--alt);border:1px solid rgba(29,91,255,.14);border-radius:var(--r-card);
  padding:28px;transition:transform .18s ease,box-shadow .18s ease;
}
.pain-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.pain-card__icon{
  width:44px;height:44px;border-radius:12px;background:#fff;color:var(--brand);
  display:grid;place-items:center;font-size:18px;font-weight:700;margin-bottom:18px;
  border:1px solid rgba(29,91,255,.18);
}
.pain-card h3{font-size:18px;font-weight:600;margin-bottom:10px;}
.pain-card p{font-size:15px;color:var(--muted);line-height:1.8;}
/* ---------- solution ---------- */
.solution__grid{display:grid;grid-template-columns:repeat(2,1fr);gap:28px;}
.sol-card{
  display:grid;grid-template-columns:200px 1fr;gap:24px;align-items:center;
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r-card);
  padding:26px;box-shadow:var(--sh-1);transition:box-shadow .18s ease,transform .18s ease,border-color .18s ease;
}
.sol-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px);border-color:rgba(29,91,255,.3);}
.sol-card--flip{grid-template-columns:1fr 200px;}
.sol-card--flip .sol-card__media{order:2;}
.sol-card__media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-img);background:var(--alt);
}
.sol-card__no{
  display:inline-grid;place-items:center;width:34px;height:24px;border-radius:6px;
  background:var(--orange);color:#fff;font-size:12px;font-weight:700;letter-spacing:.4px;margin-bottom:12px;
}
.sol-card h3{font-size:19px;font-weight:600;margin-bottom:8px;}
.sol-card p{font-size:15px;color:var(--muted);line-height:1.8;margin-bottom:14px;}
/* ---------- result ---------- */
.result__grid{display:grid;grid-template-columns:1.1fr 1fr;gap:40px;align-items:center;}
.bars{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-card);padding:30px;box-shadow:var(--sh-1);}
.bar-row{margin-bottom:22px;}
.bar-row:last-child{margin-bottom:0;}
.bar-row__top{display:flex;justify-content:space-between;font-size:14px;margin-bottom:8px;}
.bar-row__top b{font-weight:600;}
.bar-row__top span{color:var(--faint);}
.bar{height:10px;border-radius:999px;background:var(--alt);overflow:hidden;}
.bar i{display:block;height:100%;border-radius:999px;background:var(--brand);}
.bar i.is-teal{background:var(--teal);}
.result__cards{display:grid;gap:20px;}
.result-card{
  background:var(--surface);border:1px solid var(--border);border-left:4px solid var(--brand);
  border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-1);
  transition:box-shadow .18s ease,transform .18s ease;
}
.result-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px);}
.result-card h3{font-size:18px;font-weight:600;margin-bottom:8px;}
.result-card p{font-size:15px;color:var(--muted);line-height:1.8;}
/* ---------- testimonials ---------- */
.quote__grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.quote-card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:box-shadow .18s ease,transform .18s ease;
}
.quote-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px);}
.quote-card__mark{font-size:34px;line-height:1;color:rgba(29,91,255,.22);font-weight:700;margin-bottom:12px;}
.quote-card p{font-size:15px;color:var(--muted);line-height:1.85;flex:1;}
.quote-card__person{display:flex;align-items:center;gap:12px;margin-top:22px;padding-top:18px;border-top:1px solid var(--divider);}
.quote-card__person img{width:44px;height:44px;border-radius:12px;object-fit:cover;background:var(--alt);}
.quote-card__person strong{display:block;font-size:14px;font-weight:600;}
.quote-card__person span{display:block;font-size:12px;color:var(--faint);}
/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;position:relative;}
.step{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-1);position:relative;
}
.step__no{
  width:32px;height:32px;border-radius:50%;background:var(--brand);color:#fff;
  display:grid;place-items:center;font-size:14px;font-weight:700;margin-bottom:16px;
}
.step h3{font-size:17px;font-weight:600;margin-bottom:8px;}
.step p{font-size:14px;color:var(--muted);line-height:1.8;}
/* ---------- faq ---------- */
.faq{display:grid;gap:14px;max-width:880px;margin:0 auto;}
.faq-item{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r-img);
  overflow:hidden;transition:border-color .18s ease,box-shadow .18s ease;
}
.faq-item.is-open{border-color:rgba(29,91,255,.35);box-shadow:var(--sh-2);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;text-align:left;font-size:16px;font-weight:600;color:var(--text);
}
.faq-q i{
  width:26px;height:26px;border-radius:50%;background:var(--brand-soft);color:var(--brand);
  display:grid;place-items:center;font-size:16px;font-style:normal;flex-shrink:0;
  transition:transform .22s ease,background .22s ease;
}
.faq-item.is-open .faq-q i{transform:rotate(45deg);background:var(--brand);color:#fff;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s ease;}
.faq-a p{padding:0 22px 22px;font-size:15px;color:var(--muted);line-height:1.85;}
/* ---------- news ---------- */
.news__grid{display:grid;grid-template-columns:1.15fr 1fr;gap:28px;align-items:start;}
.news-lead{
  display:block;background:var(--surface);border:1px solid var(--border);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);
  transition:box-shadow .18s ease,transform .18s ease,border-color .18s ease;
}
.news-lead:hover{box-shadow:var(--sh-2);transform:translateY(-2px);border-color:rgba(29,91,255,.3);}
.news-lead__media img{width:100%;aspect-ratio:16/9;object-fit:cover;background:var(--alt);}
.news-lead__body{padding:24px 26px 26px;}
.news-meta{display:flex;align-items:center;gap:10px;margin-bottom:12px;flex-wrap:wrap;}
.news-meta time{font-size:13px;color:var(--faint);}
.news-lead h3{font-size:21px;font-weight:600;margin-bottom:10px;line-height:1.45;}
.news-lead:hover h3{color:var(--brand);}
.news-lead p{font-size:15px;color:var(--muted);line-height:1.8;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:16px;}
.news-list{display:grid;gap:14px;}
.news-item{
  display:grid;grid-template-columns:150px 1fr;gap:16px;align-items:center;
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r-sm);
  padding:14px;box-shadow:var(--sh-1);
  transition:box-shadow .18s ease,transform .18s ease,border-color .18s ease;
}
.news-item:hover{box-shadow:var(--sh-2);transform:translateY(-2px);border-color:rgba(29,91,255,.3);}
.news-item__media img{width:100%;aspect-ratio:8/5;object-fit:cover;border-radius:10px;background:var(--alt);}
.news-item h4{font-size:16px;font-weight:600;line-height:1.5;margin-bottom:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-item:hover h4{color:var(--brand);}
.news-item p{font-size:14px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:8px;}
.news-item .news-meta{margin-bottom:0;}
.news-empty{
  background:var(--surface);border:1px dashed var(--border);border-radius:var(--r-card);
  padding:56px 24px;text-align:center;
}
.news-empty__icon{
  width:52px;height:52px;border-radius:14px;background:var(--alt);color:var(--faint);
  display:grid;place-items:center;margin:0 auto 16px;font-size:22px;
}
.news-empty p{font-size:15px;color:var(--muted);margin-bottom:12px;}
/* ---------- cta ---------- */
.cta-band{background:var(--footer-bg);padding:56px 0;}
.cta-band__inner{
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-band h2{font-size:28px;font-weight:700;color:#fff;letter-spacing:-.4px;}
.cta-band p{margin-top:10px;color:#C7D2E4;font-size:15px;max-width:560px;}
.cta-band__actions{display:flex;gap:14px;flex-wrap:wrap;}
/* ---------- footer ---------- */
.site-footer{background:var(--footer-bg);color:#C7D2E4;padding-top:64px;}
.footer__grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px;}
.footer__brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer__brand .brand__mark{background:var(--brand);}
.footer__brand span{color:#fff;font-size:16px;font-weight:700;}
.footer__desc{font-size:14px;line-height:1.85;color:#98A9C4;max-width:320px;}
.footer__col h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:18px;letter-spacing:.4px;}
.footer__col li{margin-bottom:12px;}
.footer__col a{font-size:14px;color:#C7D2E4;transition:color .16s ease;}
.footer__col a:hover{color:#fff;}
.footer__bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:22px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#8A9CBB;
}
.footer__bottom span{line-height:1.7;}
@media (max-width:1199px){
  .nav__menu{display:none;}
  .nav__burger{display:inline-flex;}
  .nav__text-link{display:none;}
  .hero__inner{grid-template-columns:1fr;gap:40px;padding:56px 24px 64px;}
  .hero__visual{order:2;}
  .hero__float{bottom:-16px;left:16px;}
  .solution__grid{grid-template-columns:1fr;}
  .result__grid{grid-template-columns:1fr;gap:28px;}
  .news__grid{grid-template-columns:1fr;}
  .footer__grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px;}
}
@media (max-width:991px){
  .section{padding:64px 0;}
  .metrics__grid{grid-template-columns:repeat(2,1fr);}
  .pain__grid{grid-template-columns:1fr;}
  .quote__grid{grid-template-columns:1fr;}
  .steps{grid-template-columns:repeat(2,1fr);}
  .h2{font-size:26px;}
  .news__grid{grid-template-columns:1fr;}
}
@media (max-width:767px){
  .section{padding:44px 0;}
  .container{padding:0 18px;}
  .nav{height:60px;padding:0 18px;}
  .nav__actions .btn{display:none;}
  .brand__text{font-size:15px;}
  .hero__inner{padding:40px 18px 52px;}
  .hero__title{font-size:28px;}
  .hero__subtitle{font-size:16px;}
  .hero__actions .btn{width:100%;}
  .hero__trust{gap:16px;}
  .hero__visual img{aspect-ratio:16/10;}
  .metrics{padding:40px 0;}
  .metrics__grid{grid-template-columns:repeat(2,1fr);gap:14px;}
  .metric{padding:18px;}
  .metric__num{font-size:24px;}
  .pain-card,.card{padding:22px;}
  .sol-card,.sol-card--flip{grid-template-columns:1fr;gap:18px;}
  .sol-card--flip .sol-card__media{order:0;}
  .steps{grid-template-columns:1fr;}
  .news-item{grid-template-columns:1fr;gap:12px;}
  .news-item__media img{aspect-ratio:16/9;}
  .cta-band{padding:44px 0;}
  .cta-band h2{font-size:22px;}
  .cta-band__actions{width:100%;}
  .cta-band__actions .btn{width:100%;}
  .footer__grid{grid-template-columns:1fr 1fr;gap:28px;}
  .footer__desc{max-width:none;}
  .footer__bottom{justify-content:flex-start;}
  .faq-q{font-size:15px;padding:18px;}
  .h2{font-size:23px;}
  .section__desc{font-size:15px;}
}
@media (max-width:519px){
  .metrics__grid{grid-template-columns:1fr 1fr;}
  .footer__grid{grid-template-columns:1fr;}
  .hero__float{position:static;margin-top:16px;}
}

/* roulang page: article */
:root{
  --brand:#1D5BFF;
  --brand-dark:#0F3FBF;
  --brand-soft:#EEF3FC;
  --brand-10:rgba(29,91,255,.10);
  --brand-30:rgba(29,91,255,.30);
  --accent:#FF6B35;
  --accent-dark:#E2531F;
  --teal:#12B39A;
  --teal-12:rgba(18,179,154,.12);
  --page:#F5F7FB;
  --surface:#FFFFFF;
  --slate:#0B1B33;
  --text:#101828;
  --text-2:#475467;
  --text-3:#98A2B3;
  --border:#E4E9F2;
  --line:#EDF1F7;
  --radius-btn:10px;
  --radius-sm:12px;
  --radius-md:16px;
  --radius-lg:20px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(16,24,40,.05);
  --shadow-2:0 8px 24px rgba(16,24,40,.08);
  --shadow-3:0 16px 40px rgba(29,91,255,.14);
  --container:1200px;
  --ease:180ms cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--page);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand);text-decoration:none;transition:color var(--ease);}
a:hover{color:var(--brand-dark);}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input,textarea,select{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.35;color:var(--text);}
p{margin:0;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}

/* ============ header / nav ============ */
.site-header{
  position:sticky;top:0;z-index:120;background:#fff;border-bottom:1px solid var(--line);
  transition:box-shadow var(--ease),background var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--shadow-2);}
.nav{
  max-width:var(--container);margin:0 auto;padding:0 24px;height:72px;
  display:flex;align-items:center;gap:32px;
}
.brand{display:flex;align-items:center;gap:10px;color:var(--text);flex:0 0 auto;}
.brand:hover{color:var(--text);}
.brand__mark{
  width:36px;height:36px;border-radius:10px;background:var(--brand);color:#fff;
  display:grid;place-items:center;font-size:18px;font-weight:700;letter-spacing:.5px;
}
.brand__text{font-size:18px;font-weight:700;letter-spacing:.2px;white-space:nowrap;}
.brand__text i{color:var(--brand);font-style:normal;padding:0 1px;}
.nav__menu{display:flex;align-items:center;gap:6px;margin-left:8px;}
.nav__link{
  display:inline-block;position:relative;padding:9px 14px;border-radius:var(--radius-pill);
  font-size:15px;color:var(--text-2);font-weight:500;transition:color var(--ease),background var(--ease);
}
.nav__link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;border-radius:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform var(--ease);
}
.nav__link:hover{color:var(--brand);background:var(--brand-soft);}
.nav__link:hover::after{transform:scaleX(1);}
.nav__link.is-active{background:var(--brand-10);color:var(--brand);font-weight:600;}
.nav__actions{display:flex;align-items:center;gap:14px;margin-left:auto;}
.nav__text-link{font-size:15px;color:var(--text-2);font-weight:500;}
.nav__text-link:hover{color:var(--brand);}
.nav__burger{
  display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--border);
  position:relative;background:#fff;
}
.nav__burger span,
.nav__burger span::before,
.nav__burger span::after{
  position:absolute;left:50%;top:50%;width:18px;height:2px;background:var(--text);border-radius:2px;
  transform:translate(-50%,-50%);transition:transform var(--ease),opacity var(--ease);
}
.nav__burger span::before{content:"";top:-6px;left:0;transform:none;}
.nav__burger span::after{content:"";top:6px;left:0;transform:none;}
.nav__burger.is-open span{background:transparent;}
.nav__burger.is-open span::before{transform:translateY(6px) rotate(45deg);}
.nav__burger.is-open span::after{transform:translateY(-6px) rotate(-45deg);}

.drawer{
  position:fixed;inset:0;z-index:130;background:rgba(11,27,51,.45);
  opacity:0;visibility:hidden;transition:opacity var(--ease),visibility var(--ease);
}
.drawer.is-open{opacity:1;visibility:visible;}
.drawer__panel{
  position:absolute;top:0;right:0;width:min(86vw,360px);height:100%;background:#fff;
  padding:88px 24px 24px;display:flex;flex-direction:column;gap:20px;overflow-y:auto;
  transform:translateX(100%);transition:transform 260ms cubic-bezier(.4,0,.2,1);
}
.drawer.is-open .drawer__panel{transform:translateX(0);}
.drawer__panel ul{display:flex;flex-direction:column;}
.drawer__panel li a{
  display:block;font-size:18px;line-height:56px;color:var(--text);border-bottom:1px solid var(--line);font-weight:500;
}
.drawer__panel li a:hover{color:var(--brand);}
body.is-locked{overflow:hidden;}

/* ============ buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius-btn);font-size:15px;font-weight:600;
  border:1px solid transparent;transition:all var(--ease);white-space:nowrap;
}
.btn--primary{background:var(--brand);color:#fff;box-shadow:var(--shadow-1);}
.btn--primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn--primary:active{transform:translateY(0);background:var(--brand-dark);}
.btn--accent{background:var(--accent);color:#fff;}
.btn--accent:hover{background:var(--accent-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn--ghost{background:#fff;border-color:var(--brand);color:var(--brand);}
.btn--ghost:hover{background:var(--brand-soft);color:var(--brand-dark);}
.btn--lg{height:48px;padding:0 28px;font-size:16px;}
.btn--block{width:100%;}
.btn--light{background:#fff;color:var(--slate);}
.btn--light:hover{background:#E9EFF9;color:var(--slate);}
.btn--outline-light{background:transparent;border-color:rgba(255,255,255,.6);color:#fff;}
.btn--outline-light:hover{background:rgba(255,255,255,.12);color:#fff;}
.btn:disabled,.btn.is-disabled{opacity:.45;transform:none;box-shadow:none;pointer-events:none;}
.link-more{display:inline-flex;align-items:center;gap:6px;font-weight:600;color:var(--brand);}
.link-more::after{content:"→";transition:transform var(--ease);}
.link-more:hover::after{transform:translateX(3px);}

/* ============ badges ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:var(--radius-pill);
  font-size:12px;font-weight:600;line-height:1.6;
}
.badge--blue{background:var(--brand-10);color:var(--brand);}
.badge--teal{background:var(--teal-12);color:#0B7C6C;}
.badge--orange{background:rgba(255,107,53,.12);color:#C24412;}

/* ============ layout ============ */
main{display:block;padding-bottom:0;}
.section{padding:88px 0;}
.section--tight{padding-top:0;}

/* ============ breadcrumb ============ */
.crumb{
  background:#fff;border-bottom:1px solid var(--line);
}
.crumb__inner{
  max-width:var(--container);margin:0 auto;padding:14px 24px;font-size:14px;color:var(--text-2);
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
}
.crumb a{color:var(--text-2);}
.crumb a:hover{color:var(--brand);}
.crumb__sep{color:var(--text-3);}
.crumb__current{color:var(--text);font-weight:600;max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ============ article head ============ */
.article-hero{
  background:#fff;border-bottom:1px solid var(--line);padding:44px 0 34px;
}
.article-hero__wrap{max-width:800px;margin:0 auto;}
.article-hero h1{
  font-size:38px;line-height:1.32;letter-spacing:-.2px;
}
.article-meta{
  margin-top:18px;display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:14px;color:var(--text-2);
}
.article-meta .dot{color:var(--text-3);}
.article-divider{height:1px;background:var(--line);margin-top:24px;}

/* ============ reading layout ============ */
.reading{
  padding:44px 0 72px;
}
.reading__grid{
  max-width:var(--container);margin:0 auto;padding:0 24px;
  display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:48px;align-items:start;
}
.reading__main{max-width:800px;width:100%;}

.inline-cta{
  background:var(--brand-soft);border:1px solid var(--brand-30);border-radius:var(--radius-md);
  padding:22px 24px;display:flex;flex-wrap:wrap;align-items:center;gap:16px;justify-content:space-between;
  margin-bottom:32px;
}
.inline-cta__text{flex:1 1 260px;min-width:220px;}
.inline-cta__text strong{display:block;font-size:17px;font-weight:600;margin-bottom:4px;}
.inline-cta__text span{font-size:14px;color:var(--text-2);}

/* ============ entry typography ============ */
.entry{
  font-size:17px;line-height:1.9;color:#1E293B;
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-md);
  padding:36px 40px 40px;box-shadow:var(--shadow-1);
}
.entry > * + *{margin-top:1.2em;}
.entry p{margin:0 0 1.2em;color:var(--text-2);}
.entry h2{
  font-size:24px;font-weight:700;color:var(--text);margin:40px 0 16px;
  position:relative;padding-left:16px;line-height:1.4;
}
.entry h2::before{
  content:"";position:absolute;left:0;top:5px;bottom:5px;width:4px;border-radius:3px;background:var(--brand);
}
.entry h3{font-size:20px;font-weight:600;color:var(--text);margin:30px 0 12px;}
.entry h4{font-size:17px;font-weight:600;margin:24px 0 10px;}
.entry a{color:var(--brand);font-weight:500;border-bottom:1px solid transparent;}
.entry a:hover{border-bottom-color:var(--brand);}
.entry strong{font-weight:600;color:var(--text);}
.entry blockquote{
  margin:24px 0;padding:16px 20px;background:var(--brand-soft);border-left:3px solid var(--brand);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:var(--text-2);
}
.entry blockquote p:last-child{margin-bottom:0;}
.entry ul,.entry ol{margin:0 0 1.2em;padding:0;counter-reset:entry-ol;}
.entry ul li{
  position:relative;padding-left:22px;margin-bottom:10px;color:var(--text-2);
}
.entry ul li::before{
  content:"";position:absolute;left:0;top:.72em;width:8px;height:8px;border-radius:2px;background:var(--brand);
}
.entry ol li{
  position:relative;padding-left:34px;margin-bottom:10px;color:var(--text-2);counter-increment:entry-ol;
}
.entry ol li::before{
  content:counter(entry-ol);
  position:absolute;left:0;top:.35em;width:22px;height:22px;border-radius:6px;
  background:var(--brand-10);color:var(--brand);font-size:12px;font-weight:700;
  display:grid;place-items:center;line-height:1;
}
.entry figure{margin:26px 0;}
.entry img{border-radius:14px;width:100%;height:auto;background:var(--brand-soft);}
.entry figcaption{margin-top:10px;font-size:12px;color:var(--text-3);text-align:center;}
.entry table{
  width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;
  border:1px solid var(--border);border-radius:var(--radius-sm);overflow:hidden;
}
.entry thead th{
  background:var(--brand);color:#fff;font-weight:600;text-align:left;padding:12px 14px;font-size:14px;
}
.entry tbody td{padding:12px 14px;border-top:1px solid var(--border);color:var(--text-2);}
.entry tbody tr:nth-child(even){background:#F8FAFF;}
.entry pre{
  background:#F4F6FA;border:1px solid var(--border);border-radius:var(--radius-sm);
  padding:16px 18px;overflow-x:auto;font-size:14px;line-height:1.7;color:#26334D;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
.entry code{
  background:#F4F6FA;border-radius:6px;padding:2px 6px;font-size:.92em;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;color:#26334D;
}
.entry pre code{background:none;padding:0;}
.entry hr{border:0;border-top:1px solid var(--line);margin:32px 0;}

/* ============ empty state ============ */
.empty{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-md);padding:56px 32px;
  text-align:center;box-shadow:var(--shadow-1);
}
.empty__icon{
  width:56px;height:56px;border-radius:14px;background:var(--brand-soft);color:var(--brand);
  display:grid;place-items:center;margin:0 auto 16px;font-size:24px;
}
.empty h2{font-size:20px;margin-bottom:8px;}
.empty p{color:var(--text-2);font-size:15px;margin-bottom:20px;}

/* ============ sidebar ============ */
.sidebar{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px;}
.side-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-md);
  padding:22px;box-shadow:var(--shadow-1);
}
.side-card h3{font-size:16px;font-weight:600;margin-bottom:14px;}
.toc{display:flex;flex-direction:column;gap:2px;}
.toc a{
  display:block;font-size:14px;color:var(--text-2);padding:7px 10px;border-radius:8px;
  border-left:2px solid transparent;transition:all var(--ease);
}
.toc a:hover{background:var(--brand-soft);color:var(--brand);border-left-color:var(--brand);}
.hot-list{display:flex;flex-direction:column;gap:14px;}
.hot-list li{display:flex;gap:12px;align-items:flex-start;}
.hot-list .rank{
  flex:0 0 auto;width:22px;height:22px;border-radius:6px;background:var(--brand-10);color:var(--brand);
  font-size:12px;font-weight:700;display:grid;place-items:center;margin-top:2px;
}
.hot-list a{font-size:14px;color:var(--text-2);line-height:1.6;}
.hot-list a:hover{color:var(--brand);}
.side-note{background:var(--brand-soft);border-color:var(--brand-30);}
.side-note p{font-size:14px;color:var(--text-2);margin-bottom:14px;}

/* ============ related ============ */
.related{padding:0 0 8px;}
.related__head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:24px;}
.related__head h2{font-size:24px;}
.related__grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.post-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-md);
  overflow:hidden;box-shadow:var(--shadow-1);display:flex;flex-direction:column;
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.post-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--brand-30);}
.post-card__media{aspect-ratio:8/5;background:var(--brand-soft);overflow:hidden;}
.post-card__media img{width:100%;height:100%;object-fit:cover;}
.post-card__body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.post-card__body h3{font-size:18px;font-weight:600;line-height:1.5;}
.post-card__body h3 a{color:var(--text);}
.post-card__body h3 a:hover{color:var(--brand);}
.post-card__body p{font-size:15px;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-card__meta{margin-top:auto;display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-3);}

.article-foot{
  margin-top:36px;display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;
  padding-top:24px;border-top:1px solid var(--line);
}
.back-top{
  position:fixed;right:24px;bottom:28px;z-index:100;width:46px;height:46px;border-radius:50%;
  background:#fff;border:1px solid var(--brand);color:var(--brand);box-shadow:var(--shadow-2);
  display:grid;place-items:center;opacity:0;visibility:hidden;transition:all var(--ease);font-size:18px;
}
.back-top.is-show{opacity:1;visibility:visible;}
.back-top:hover{background:var(--brand);color:#fff;}

/* ============ CTA band ============ */
.cta-band{
  background:var(--slate);color:#fff;border-radius:var(--radius-lg);
  padding:44px 48px;display:flex;flex-wrap:wrap;gap:24px;align-items:center;justify-content:space-between;
}
.cta-band h2{color:#fff;font-size:26px;margin-bottom:8px;}
.cta-band p{color:#C7D2E4;font-size:15px;max-width:52ch;}
.cta-band__actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ============ footer ============ */
.site-footer{background:var(--slate);color:#C7D2E4;margin-top:88px;}
.footer__grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding:64px 0 40px;
}
.footer__brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:700;margin-bottom:14px;}
.footer__desc{font-size:14px;line-height:1.85;color:#98A9C4;max-width:34ch;}
.footer__col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;}
.footer__col ul{display:flex;flex-direction:column;gap:11px;}
.footer__col a{color:#C7D2E4;font-size:14px;}
.footer__col a:hover{color:#fff;}
.footer__bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:20px 0 28px;
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:13px;color:#8FA1BD;
}

/* ============ responsive ============ */
@media (max-width:1199px){
  .reading__grid{grid-template-columns:minmax(0,1fr);gap:36px;}
  .reading__main{max-width:820px;margin:0 auto;width:100%;}
  .sidebar{position:static;flex-direction:row;flex-wrap:wrap;}
  .sidebar > .side-card{flex:1 1 300px;}
  .nav__menu{gap:2px;}
  .nav__link{padding:9px 10px;font-size:14px;}
}
@media (max-width:991px){
  .nav__menu,.nav__text-link{display:none;}
  .nav__burger{display:block;}
  .nav{height:64px;gap:16px;}
  .article-hero h1{font-size:30px;}
  .entry{padding:28px 26px 32px;font-size:16px;}
  .entry h2{font-size:22px;}
  .related__grid{grid-template-columns:repeat(2,1fr);}
  .footer__grid{grid-template-columns:1fr 1fr;gap:32px;padding:48px 0 32px;}
  .cta-band{padding:36px 32px;}
}
@media (max-width:767px){
  .section{padding:56px 0;}
  .container{padding:0 18px;}
  .reading__grid{padding:0 18px;}
  .article-hero{padding:32px 0 26px;}
  .article-hero h1{font-size:26px;}
  .article-hero__wrap{padding:0;}
  .entry{padding:24px 20px 28px;line-height:1.85;}
  .entry h2{font-size:20px;margin-top:32px;}
  .related__grid{grid-template-columns:1fr;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:30px 24px;}
  .cta-band__actions{width:100%;}
  .cta-band__actions .btn{flex:1 1 100%;}
  .back-top{right:16px;bottom:18px;}
}
@media (max-width:520px){
  body{font-size:15px;}
  .brand__text{font-size:16px;}
  .crumb__inner{font-size:13px;padding:12px 18px;}
  .crumb__current{max-width:100%;white-space:normal;}
  .article-meta{font-size:13px;gap:8px;}
  .inline-cta{padding:18px;}
  .inline-cta .btn{width:100%;}
  .footer__grid{grid-template-columns:1fr;gap:28px;}
  .footer__bottom{flex-direction:column;align-items:flex-start;}
}

/* roulang page: category1 */
/* ============ 设计变量 ============ */
:root{
  --brand:#1D5BFF;
  --brand-dark:#0F3FBF;
  --accent:#FF6B35;
  --teal:#12B39A;
  --bg:#F5F7FB;
  --card:#FFFFFF;
  --tint:#EEF3FC;
  --footer-bg:#0B1B33;
  --text:#101828;
  --text-2:#475467;
  --text-3:#98A2B3;
  --border:#E4E9F2;
  --divider:#EDF1F7;
  --r-btn:10px;
  --r-tag:999px;
  --r-sm:12px;
  --r-card:16px;
  --r-hero:20px;
  --r-img:14px;
  --sh-1:0 1px 2px rgba(16,24,40,.05);
  --sh-2:0 8px 24px rgba(16,24,40,.08);
  --sh-3:0 16px 40px rgba(29,91,255,.14);
  --sec-pc:88px;
  --sec-tb:64px;
  --sec-mb:44px;
  --font:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}

/* ============ reset / base ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img);}
a{color:inherit;text-decoration:none;}
a:hover{color:var(--brand);}
button{font-family:inherit;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
h1{font-size:44px;line-height:1.25;font-weight:700;letter-spacing:-.5px;}
h2{font-size:32px;line-height:1.32;font-weight:700;letter-spacing:-.3px;}
h3{font-size:20px;line-height:1.45;font-weight:600;}
p{color:var(--text-2);}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:var(--sec-pc) 0;}
.section--tint{background:var(--tint);}
.section--white{background:#fff;}

/* ============ 导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:90;
  background:#fff;
  border-bottom:1px solid var(--border);
  transition:box-shadow .18s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh-2);}
.nav{
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
  height:72px;
  display:flex;
  align-items:center;
  gap:28px;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand__mark{
  width:36px;height:36px;border-radius:10px;
  background:var(--brand);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-weight:700;font-size:17px;
  box-shadow:var(--sh-1);
}
.brand__text{font-size:17px;font-weight:700;color:var(--text);letter-spacing:-.2px;}
.brand__text i{color:var(--accent);font-style:normal;padding:0 1px;}
.nav__menu{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav__link{
  display:block;
  padding:9px 14px;
  font-size:15px;
  font-weight:500;
  color:var(--text-2);
  border-radius:var(--r-tag);
  position:relative;
  transition:color .16s ease,background .16s ease;
}
.nav__link:hover{color:var(--brand);background:#F2F6FF;}
.nav__link.is-active{background:#E9F0FF;color:var(--brand);font-weight:600;}
.nav__actions{display:flex;align-items:center;gap:14px;flex-shrink:0;}
.nav__text-link{font-size:15px;font-weight:500;color:var(--text-2);}
.nav__text-link:hover{color:var(--brand);}
.nav__burger{
  display:none;
  width:42px;height:42px;
  border:1px solid var(--border);
  border-radius:var(--r-btn);
  background:#fff;
  position:relative;
}
.nav__burger span,
.nav__burger span::before,
.nav__burger span::after{
  position:absolute;left:50%;transform:translateX(-50%);
  width:18px;height:2px;border-radius:2px;background:var(--text);
  transition:.2s ease;
}
.nav__burger span{top:50%;margin-top:-1px;}
.nav__burger span::before{content:"";top:-6px;}
.nav__burger span::after{content:"";top:6px;}

/* 移动抽屉 */
.drawer{
  position:fixed;
  inset:0 0 0 auto;
  width:min(86vw,380px);
  background:#fff;
  z-index:120;
  transform:translateX(102%);
  transition:transform .26s ease;
  display:flex;
  flex-direction:column;
  padding:20px 22px 22px;
  box-shadow:var(--sh-2);
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer__head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px;}
.drawer__close{
  width:40px;height:40px;border-radius:var(--r-btn);
  border:1px solid var(--border);background:#fff;color:var(--text-2);font-size:20px;
  line-height:1;
}
.drawer__nav{display:flex;flex-direction:column;}
.drawer__nav a{
  display:block;
  font-size:18px;
  line-height:56px;
  color:var(--text);
  border-bottom:1px solid var(--divider);
}
.drawer__nav a.is-active{color:var(--brand);font-weight:600;}
.drawer__foot{margin-top:auto;padding-top:20px;}
.mask{
  position:fixed;inset:0;background:rgba(11,27,51,.45);
  z-index:110;opacity:0;visibility:hidden;transition:.24s ease;
}
.mask.is-open{opacity:1;visibility:visible;}
body.no-scroll{overflow:hidden;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;
  border-radius:var(--r-btn);
  font-size:15px;font-weight:600;
  border:1px solid transparent;
  transition:transform .18s ease,background .18s ease,box-shadow .18s ease,color .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn--primary{background:var(--brand);color:#fff;}
.btn--primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn--accent{background:var(--accent);color:#fff;}
.btn--accent:hover{background:#E85A25;color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn--outline{background:#fff;border-color:var(--brand);color:var(--brand);}
.btn--outline:hover{background:#F2F6FF;color:var(--brand-dark);border-color:var(--brand-dark);}
.btn--lg{height:48px;padding:0 26px;font-size:16px;}
.btn--block{width:100%;}
.btn:disabled,.btn.is-disabled{opacity:.45;transform:none;box-shadow:none;cursor:not-allowed;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand);font-size:15px;font-weight:600;
}
.link-arrow i{font-style:normal;transition:transform .18s ease;}
.link-arrow:hover i{transform:translateX(3px);}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-block;
  padding:4px 10px;
  border-radius:var(--r-tag);
  font-size:12px;
  font-weight:600;
  background:rgba(29,91,255,.1);
  color:var(--brand);
  line-height:1.6;
}
.badge--teal{background:rgba(18,179,154,.12);color:#0E8C79;}
.badge--orange{background:rgba(255,107,53,.12);color:#D9531F;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--brand);
  letter-spacing:.06em;
  margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--brand);}

/* ============ 面包屑 ============ */
.crumb{
  padding:16px 0 0;
  font-size:14px;
  color:var(--text-3);
}
.crumb a{color:var(--text-2);}
.crumb a:hover{color:var(--brand);}
.crumb span.sep{margin:0 8px;color:var(--text-3);}
.crumb strong{color:var(--text);font-weight:600;}

/* ============ 分类页 Hero ============ */
.page-hero{
  position:relative;
  padding:36px 0 64px;
  overflow:hidden;
  background:#fff;
}
.page-hero::after{
  content:"";
  position:absolute;right:-10%;top:-30%;
  width:560px;height:560px;border-radius:50%;
  background:radial-gradient(circle,rgba(29,91,255,.10),rgba(29,91,255,0) 68%);
  pointer-events:none;
}
.page-hero__grid{
  position:relative;
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:48px;
  align-items:center;
  min-height:44vh;
}
.page-hero__copy h1{margin-bottom:18px;}
.page-hero__copy h1 em{font-style:normal;color:var(--brand);}
.page-hero__sub{
  font-size:18px;
  line-height:1.75;
  color:var(--text-2);
  max-width:560px;
  margin-bottom:26px;
}
.page-hero__cta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:28px;}
.page-hero__media{
  position:relative;
  border-radius:var(--r-hero);
  overflow:hidden;
  box-shadow:var(--sh-2);
  background:var(--tint);
  aspect-ratio:16/11;
}
.page-hero__media img{width:100%;height:100%;object-fit:cover;border-radius:0;}
.page-hero__media::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(11,27,51,.06),rgba(11,27,51,.38));
}
.page-hero__caption{
  position:absolute;left:22px;right:22px;bottom:20px;z-index:2;
  color:#fff;font-size:15px;font-weight:600;
  display:flex;align-items:center;gap:10px;
}
.page-hero__caption span{
  display:inline-flex;
  padding:4px 10px;border-radius:var(--r-tag);
  background:rgba(255,107,53,.92);font-size:12px;font-weight:700;
}
.mini-facts{
  display:flex;flex-wrap:wrap;gap:10px 22px;
  font-size:14px;color:var(--text-2);
}
.mini-facts li{display:flex;align-items:center;gap:8px;}
.mini-facts li::before{
  content:"";width:7px;height:7px;border-radius:50%;background:var(--teal);
}

/* ============ 导语 ============ */
.intro-grid{
  display:grid;grid-template-columns:1fr 1fr;gap:32px;
}
.intro-card{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--r-card);
  padding:28px;
  box-shadow:var(--sh-1);
}
.intro-card h3{margin-bottom:12px;}
.intro-card h3::before{
  content:"";display:inline-block;width:4px;height:16px;border-radius:2px;
  background:var(--brand);margin-right:10px;vertical-align:-2px;
}
.intro-card p{font-size:16px;line-height:1.85;}

/* ============ 要点网格 ============ */
.points-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
  margin-top:40px;
}
.point-card{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--r-card);
  padding:26px;
  box-shadow:var(--sh-1);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.point-card:hover{
  transform:translateY(-2px);
  box-shadow:var(--sh-2);
  border-color:rgba(29,91,255,.3);
}
.point-card__icon{
  width:44px;height:44px;border-radius:12px;
  background:rgba(29,91,255,.1);
  color:var(--brand);
  display:flex;align-items:center;justify-content:center;
  font-size:18px;font-weight:700;
  margin-bottom:16px;
}
.point-card h3{font-size:18px;margin-bottom:8px;}
.point-card p{font-size:15px;line-height:1.75;}

/* ============ 步骤条 ============ */
.steps{
  position:relative;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
  margin-top:48px;
}
.steps::before{
  content:"";
  position:absolute;left:6%;right:6%;top:26px;height:2px;
  background:var(--divider);
}
.step{
  position:relative;
  padding-top:60px;
}
.step__num{
  position:absolute;top:0;left:0;
  width:52px;height:52px;border-radius:50%;
  background:var(--accent);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:17px;font-weight:700;
  font-variant-numeric:tabular-nums;
  box-shadow:0 8px 20px rgba(255,107,53,.28);
  z-index:2;
}
.step__body{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--r-card);
  padding:24px;
  box-shadow:var(--sh-1);
  height:100%;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.step:hover .step__body{
  transform:translateY(-2px);
  box-shadow:var(--sh-2);
  border-color:rgba(29,91,255,.3);
}
.step__body h3{font-size:18px;margin-bottom:10px;}
.step__body p{font-size:15px;line-height:1.8;}
.step__tag{margin-top:14px;display:inline-block;}

/* ============ 资讯卡 ============ */
.news-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
  margin-bottom:32px;
}
.news-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:24px;
}
.news-card{
  display:flex;flex-direction:column;
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(29,91,255,.3);}
.news-card__media{
  aspect-ratio:8/5;
  background:var(--tint);
  overflow:hidden;
}
.news-card__media img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .32s ease;}
.news-card:hover .news-card__media img{transform:scale(1.04);}
.news-card__body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.news-card__body h3{font-size:18px;line-height:1.5;}
.news-card__body p{font-size:15px;line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-card__meta{
  margin-top:auto;display:flex;align-items:center;gap:10px;
  font-size:13px;color:var(--text-3);
}

/* ============ FAQ ============ */
.faq-wrap{max-width:880px;margin:0 auto;}
.faq{display:flex;flex-direction:column;gap:14px;margin-top:36px;}
.faq__item{
  background:#fff;
  border:1px solid var(--border);
  border-radius:14px;
  box-shadow:var(--sh-1);
  overflow:hidden;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.faq__item.is-open{border-color:rgba(29,91,255,.35);box-shadow:var(--sh-2);}
.faq__q{
  width:100%;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 24px;
  background:none;border:0;
  text-align:left;
  font-size:16px;font-weight:600;color:var(--text);
  line-height:1.6;
}
.faq__sign{
  flex-shrink:0;
  width:26px;height:26px;border-radius:50%;
  background:rgba(29,91,255,.1);color:var(--brand);
  display:flex;align-items:center;justify-content:center;
  font-size:16px;line-height:1;font-weight:600;
  transition:transform .22s ease,background .22s ease,color .22s ease;
}
.faq__item.is-open .faq__sign{transform:rotate(45deg);background:var(--brand);color:#fff;}
.faq__a{
  max-height:0;
  overflow:hidden;
  transition:max-height .22s ease;
}
.faq__a p{
  padding:0 24px 22px;
  font-size:15px;
  line-height:1.8;
  color:var(--text-2);
}

/* ============ CTA 条 ============ */
.cta-band{
  background:var(--footer-bg);
  color:#fff;
  padding:56px 0;
}
.cta-band__inner{
  display:flex;align-items:center;justify-content:space-between;gap:32px;
}
.cta-band h2{color:#fff;font-size:28px;margin-bottom:10px;}
.cta-band p{color:#C7D2E4;font-size:16px;max-width:620px;}
.cta-band__actions{display:flex;gap:14px;flex-wrap:wrap;flex-shrink:0;}
.cta-band .btn--ghost{background:transparent;border-color:rgba(255,255,255,.5);color:#fff;}
.cta-band .btn--ghost:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff;}

/* ============ 页脚 ============ */
.site-footer{background:var(--footer-bg);color:#C7D2E4;padding:64px 0 0;}
.footer__grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:44px;
  border-bottom:1px solid rgba(255,255,255,.1);
}
.footer__brand{
  display:flex;align-items:center;gap:10px;
  font-size:17px;font-weight:700;color:#fff;
  margin-bottom:14px;
}
.footer__brand .brand__mark{background:var(--brand);}
.footer__desc{color:#9FB0C9;font-size:14px;line-height:1.8;max-width:320px;}
.footer__col h4{font-size:15px;color:#fff;margin-bottom:16px;font-weight:600;}
.footer__col ul{display:flex;flex-direction:column;gap:10px;}
.footer__col a{font-size:14px;color:#C7D2E4;transition:color .16s ease;}
.footer__col a:hover{color:#fff;}
.footer__bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:22px 0 28px;
  font-size:13px;
  color:#8C9DB8;
  flex-wrap:wrap;
}

/* ============ 回到顶部 ============ */
.to-top{
  position:fixed;right:22px;bottom:26px;
  width:46px;height:46px;border-radius:var(--r-btn);
  border:1px solid var(--border);background:#fff;color:var(--brand);
  box-shadow:var(--sh-2);
  display:flex;align-items:center;justify-content:center;
  font-size:18px;
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:.22s ease;z-index:80;
}
.to-top.is-show{opacity:1;visibility:visible;transform:translateY(0);}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .page-hero__grid{gap:36px;}
  .points-grid{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:repeat(2,1fr);}
  .steps::before{display:none;}
  .footer__grid{grid-template-columns:1.4fr 1fr 1fr;}
}
@media (max-width:991px){
  :root{--sec-pc:64px;}
  h1{font-size:34px;}
  h2{font-size:26px;}
  .nav__menu,.nav__text-link{display:none;}
  .nav__burger{display:block;}
  .nav__actions{margin-left:auto;}
  .page-hero{padding-bottom:48px;}
  .page-hero__grid{grid-template-columns:1fr;min-height:0;}
  .page-hero__media{aspect-ratio:16/9;}
  .intro-grid{grid-template-columns:1fr;}
  .news-grid{grid-template-columns:1fr 1fr;}
  .cta-band__inner{flex-direction:column;align-items:flex-start;}
}
@media (max-width:767px){
  :root{--sec-pc:44px;}
  h1{font-size:30px;}
  h2{font-size:24px;}
  h3{font-size:18px;}
  .container{padding:0 18px;}
  .nav{padding:0 18px;height:60px;}
  .points-grid{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;}
  .step{padding-top:0;padding-left:64px;}
  .step__num{left:0;top:0;}
  .news-grid{grid-template-columns:1fr;}
  .news-card{flex-direction:column;}
  .news-head{flex-direction:column;align-items:flex-start;gap:12px;}
  .page-hero__cta .btn{width:100%;}
  .footer__grid{grid-template-columns:1fr 1fr;gap:28px;}
  .footer__desc{max-width:none;}
  .cta-band__actions{width:100%;}
  .cta-band__actions .btn{width:100%;}
}
@media (max-width:519px){
  .footer__grid{grid-template-columns:1fr;}
  .brand__text{font-size:16px;}
}

/* roulang page: category2 */
:root{
  --brand:#1D5BFF;
  --brand-dark:#0F3FBF;
  --orange:#FF6B35;
  --teal:#12B39A;
  --bg:#F5F7FB;
  --card:#FFFFFF;
  --band:#EEF3FC;
  --ink:#101828;
  --ink-2:#475467;
  --ink-3:#98A2B3;
  --line:#E4E9F2;
  --line-2:#EDF1F7;
  --navy:#0B1B33;
  --r-btn:10px;
  --r-sm:12px;
  --r-md:16px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(16,24,40,.05);
  --sh-2:0 8px 24px rgba(16,24,40,.08);
  --sh-3:0 16px 40px rgba(29,91,255,.14);
  --ease:180ms ease;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;color:inherit}
input,textarea,select{font:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3}
p{margin:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:8px}
.container{width:min(1160px,100% - 48px);margin:0 auto}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#fff;border-bottom:1px solid var(--line);
  transition:box-shadow var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh-2)}
.nav{
  width:min(1200px,100% - 48px);margin:0 auto;
  height:72px;display:flex;align-items:center;gap:20px;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand__mark{
  width:34px;height:34px;border-radius:10px;background:var(--brand);color:#fff;
  display:grid;place-items:center;font-size:17px;font-weight:700;letter-spacing:0;
}
.brand__text{font-size:18px;font-weight:700;color:var(--ink);letter-spacing:.2px}
.brand__text i{color:var(--brand);font-style:normal;margin:0 2px}
.nav__menu{display:flex;align-items:center;gap:4px;margin:0 auto}
.nav__link{
  display:block;padding:8px 14px;border-radius:var(--r-pill);
  font-size:15px;color:var(--ink-2);
  transition:color var(--ease),background var(--ease);
}
.nav__link:hover{color:var(--brand);background:#F0F5FF;box-shadow:inset 0 -2px 0 var(--brand)}
.nav__link.is-active{color:var(--brand);background:#E8F0FF;font-weight:600}
.nav__actions{display:flex;align-items:center;gap:14px;margin-left:auto}
.nav__text-link{font-size:15px;color:var(--ink-2);transition:color var(--ease)}
.nav__text-link:hover{color:var(--brand)}
.nav__burger{
  display:none;place-items:center;width:42px;height:42px;
  border:1px solid var(--line);border-radius:var(--r-btn);background:#fff;cursor:pointer;
}
.nav__burger span{position:relative;display:block;width:18px;height:2px;border-radius:2px;background:var(--ink)}
.nav__burger span::before,.nav__burger span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--ink);
}
.nav__burger span::before{top:-6px}
.nav__burger span::after{top:6px}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:background var(--ease),color var(--ease),transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.btn--primary{background:var(--brand);color:#fff}
.btn--primary:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:var(--sh-3)}
.btn--primary:active{transform:translateY(0);box-shadow:var(--sh-1)}
.btn--accent{background:var(--orange);color:#fff}
.btn--accent:hover{background:#E85A24;transform:translateY(-1px);box-shadow:0 12px 28px rgba(255,107,53,.28)}
.btn--ghost{background:#fff;border-color:var(--brand);color:var(--brand)}
.btn--ghost:hover{background:#F0F5FF;transform:translateY(-1px)}
.btn--outline-light{background:transparent;border-color:rgba(255,255,255,.55);color:#fff}
.btn--outline-light:hover{background:rgba(255,255,255,.12)}
.btn--lg{height:48px;padding:0 26px}
.btn--block{width:100%}
.link-more{
  display:inline-flex;align-items:center;gap:6px;color:var(--brand);
  font-size:15px;font-weight:600;transition:gap var(--ease),color var(--ease);
}
.link-more::after{content:"→";transition:transform var(--ease)}
.link-more:hover{color:var(--brand-dark);gap:9px}
.link-more:hover::after{transform:translateX(3px)}

/* ---------- hero ---------- */
.cat-hero{padding:56px 0 44px;background:#fff;border-bottom:1px solid var(--line-2)}
.cat-hero__grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--brand);
  background:#E8F0FF;border-radius:var(--r-pill);padding:5px 12px;
}
.eyebrow .dot-live{width:7px;height:7px;border-radius:50%;background:var(--teal);display:inline-block}
.cat-hero h1{font-size:44px;margin:18px 0 14px;letter-spacing:-.5px}
.cat-hero__sub{font-size:17px;color:var(--ink-2);max-width:46ch;margin-bottom:26px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-points{display:flex;flex-wrap:wrap;gap:20px;margin-top:28px;font-size:14px;color:var(--ink-2)}
.hero-points li{display:flex;align-items:center;gap:8px}
.hero-points .dot{width:8px;height:8px;border-radius:50%;background:var(--teal);flex-shrink:0}
.media-frame{
  border-radius:var(--r-lg);overflow:hidden;background:var(--band);
  box-shadow:var(--sh-2);border:1px solid var(--line);
}
.media-frame img{width:100%;aspect-ratio:16/9;object-fit:cover}

/* ---------- stats ---------- */
.stat-band{background:var(--band);padding:28px 0}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.stat{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:20px 22px;box-shadow:var(--sh-1);transition:box-shadow var(--ease),transform var(--ease);
}
.stat:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}
.stat b{display:block;font-size:28px;font-weight:700;color:var(--brand);font-variant-numeric:tabular-nums;line-height:1.2}
.stat span{font-size:14px;color:var(--ink-2)}

/* ---------- section base ---------- */
.section{padding:88px 0}
.section--band{background:var(--band)}
.section--white{background:#fff}
.section h2{font-size:32px;position:relative;padding-left:16px;margin-bottom:14px}
.section h2::before{
  content:"";position:absolute;left:0;top:.2em;width:4px;height:.86em;
  border-radius:2px;background:var(--brand);
}
.lead{color:var(--ink-2);font-size:16px;max-width:74ch}
.lead + .lead{margin-top:16px}

/* ---------- feature grid ---------- */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:36px}
.feature{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:26px 24px;box-shadow:var(--sh-1);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.feature:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(29,91,255,.3)}
.feature__icon{
  width:42px;height:42px;border-radius:var(--r-sm);background:#E8F0FF;color:var(--brand);
  display:grid;place-items:center;font-size:15px;font-weight:700;margin-bottom:16px;
}
.feature h3{font-size:18px;font-weight:600;margin-bottom:8px}
.feature p{font-size:15px;color:var(--ink-2)}

/* ---------- rail ---------- */
.rail-head{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;flex-wrap:wrap}
.rail-nav{display:flex;gap:10px}
.rail-btn{
  width:42px;height:42px;border-radius:var(--r-pill);border:1px solid var(--line);
  background:#fff;color:var(--ink-2);cursor:pointer;display:grid;place-items:center;
  font-size:16px;transition:border-color var(--ease),color var(--ease),box-shadow var(--ease);
}
.rail-btn:hover{border-color:var(--brand);color:var(--brand);box-shadow:var(--sh-1)}
.rail{
  display:grid;grid-auto-flow:column;grid-auto-columns:300px;gap:20px;
  overflow-x:auto;scroll-snap-type:x mandatory;padding:4px 4px 16px;margin-top:32px;
  scrollbar-width:thin;
}
.rail::-webkit-scrollbar{height:6px}
.rail::-webkit-scrollbar-track{background:var(--line-2);border-radius:var(--r-pill)}
.rail::-webkit-scrollbar-thumb{background:#D7DFEE;border-radius:var(--r-pill)}
.rail__card{
  scroll-snap-align:start;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-md);overflow:hidden;box-shadow:var(--sh-1);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.rail__card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(29,91,255,.3)}
.rail__card img{width:100%;aspect-ratio:4/3;object-fit:cover;background:var(--band)}
.rail__body{padding:16px 18px 22px}
.rail__body h3{font-size:17px;font-weight:600;margin-bottom:6px}
.rail__body p{font-size:14px;color:var(--ink-2)}

/* ---------- matrix ---------- */
.matrix{display:grid;grid-template-columns:1.6fr 1fr;gap:24px;margin-top:36px}
.matrix__main{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.big-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.big-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(29,91,255,.3)}
.big-card img{width:100%;aspect-ratio:16/9;object-fit:cover;background:var(--band)}
.big-card__body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.big-card__body h3{font-size:19px;font-weight:600;margin-top:4px}
.big-card__body p{font-size:15px;color:var(--ink-2)}
.big-card__body .link-more{margin-top:auto;padding-top:12px}
.badge{
  display:inline-flex;align-items:center;gap:6px;align-self:flex-start;
  padding:4px 10px;border-radius:var(--r-pill);font-size:12px;font-weight:600;
  background:rgba(29,91,255,.1);color:var(--brand);
}
.badge--teal{background:rgba(18,179,154,.12);color:#0A7A69}
.badge--orange{background:rgba(255,107,53,.12);color:#C74A1B}
.small-list{display:grid;gap:16px;align-content:start}
.small-card{
  display:flex;gap:14px;align-items:flex-start;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-sm);
  padding:18px 20px;box-shadow:var(--sh-1);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.small-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(29,91,255,.3)}
.small-card__no{
  flex-shrink:0;width:28px;height:28px;border-radius:9px;background:var(--orange);color:#fff;
  display:grid;place-items:center;font-size:13px;font-weight:700;font-variant-numeric:tabular-nums;
}
.small-card h3{font-size:16px;font-weight:600;margin-bottom:4px}
.small-card p{font-size:14px;color:var(--ink-2)}

/* ---------- faq ---------- */
.faq{display:grid;gap:14px;margin-top:32px;max-width:920px}
.faq__item{background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--sh-1);overflow:hidden}
.faq__item.is-open{border-color:rgba(29,91,255,.35)}
.faq__q{
  width:100%;background:none;border:0;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:18px 22px;font-size:16px;font-weight:600;text-align:left;
}
.faq__icon{
  flex-shrink:0;width:24px;height:24px;border-radius:7px;background:#E8F0FF;color:var(--brand);
  display:grid;place-items:center;font-size:16px;line-height:1;
  transition:transform 220ms ease,background var(--ease);
}
.faq__item.is-open .faq__icon{transform:rotate(45deg);background:var(--brand);color:#fff}
.faq__a{max-height:0;overflow:hidden;transition:max-height 220ms ease}
.faq__a p{padding:0 22px 20px;font-size:15px;color:var(--ink-2);line-height:1.8}

/* ---------- cta ---------- */
.cta-band{position:relative;background:var(--navy);color:#fff;padding:56px 0;overflow:hidden}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:url(/assets/images/backpic/back-2.webp) center/cover no-repeat;
  opacity:.16;
}
.cta-band .container{position:relative;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-band h2{font-size:28px;color:#fff;padding-left:0;margin-bottom:8px}
.cta-band h2::before{display:none}
.cta-band p{color:#C7D2E4;font-size:15px;max-width:60ch}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- footer ---------- */
.site-footer{background:var(--navy);color:#C7D2E4;font-size:15px;padding-top:64px}
.footer__grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;
  padding-bottom:44px;border-bottom:1px solid rgba(255,255,255,.12);
}
.footer__brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:700;margin-bottom:14px}
.footer__desc{color:#98A7C0;line-height:1.8;max-width:36ch}
.footer__col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px}
.footer__col ul{display:grid;gap:10px}
.footer__col a{color:#C7D2E4;transition:color var(--ease)}
.footer__col a:hover{color:#fff}
.footer__bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:22px 0 28px;font-size:13px;color:#8A99B4;
}

/* ---------- drawer ---------- */
.drawer{position:fixed;inset:0;z-index:80;visibility:hidden;pointer-events:none}
.drawer__scrim{position:absolute;inset:0;background:rgba(11,27,51,.5);opacity:0;transition:opacity .22s ease}
.drawer__panel{
  position:absolute;top:0;right:0;height:100%;width:min(340px,88vw);
  background:#fff;display:flex;flex-direction:column;padding:20px 20px 24px;
  transform:translateX(100%);transition:transform .24s ease;box-shadow:var(--sh-2);
}
.drawer.is-open{visibility:visible;pointer-events:auto}
.drawer.is-open .drawer__scrim{opacity:1}
.drawer.is-open .drawer__panel{transform:none}
.drawer__head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:16px;border-bottom:1px solid var(--line-2)}
.drawer__close{
  width:38px;height:38px;border-radius:var(--r-btn);border:1px solid var(--line);
  background:#fff;cursor:pointer;display:grid;place-items:center;font-size:18px;color:var(--ink-2);
}
.drawer__close:hover{border-color:var(--brand);color:var(--brand)}
.drawer__nav{display:grid;gap:2px;margin:18px 0 auto}
.drawer__nav a{
  display:block;padding:14px 6px;font-size:18px;color:var(--ink);
  border-bottom:1px solid var(--line-2);transition:color var(--ease),padding-left var(--ease);
}
.drawer__nav a:hover{padding-left:12px}
.drawer__nav a.is-active{color:var(--brand);font-weight:600}
body.drawer-open{overflow:hidden}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .matrix{grid-template-columns:1fr}
  .matrix__main{grid-template-columns:repeat(2,1fr)}
  .small-list{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:991px){
  .cat-hero{padding:44px 0 36px}
  .cat-hero h1{font-size:34px}
  .cat-hero__grid{grid-template-columns:1fr;gap:28px}
  .section{padding:64px 0}
  .section h2{font-size:26px}
  .feature-grid{grid-template-columns:repeat(2,1fr)}
  .stat-grid{grid-template-columns:repeat(2,1fr)}
  .footer__grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-band h2{font-size:24px}
}
@media (max-width:767px){
  .nav{height:60px}
  .nav__menu{display:none}
  .nav__text-link{display:none}
  .nav__burger{display:grid}
  .brand__text{font-size:16px}
  .matrix__main{grid-template-columns:1fr}
  .small-list{grid-template-columns:1fr}
  .feature-grid{grid-template-columns:1fr}
  .rail{grid-auto-columns:78%}
  .cta-band .container{flex-direction:column;align-items:flex-start}
  .footer__grid{grid-template-columns:1fr}
  .footer__bottom{flex-direction:column;gap:8px}
}
@media (max-width:519px){
  .cat-hero h1{font-size:26px}
  .cat-hero__sub{font-size:16px}
  .section h2{font-size:22px}
  .section{padding:44px 0}
  .stat b{font-size:24px}
  .hero-actions{flex-direction:column}
  .hero-actions .btn{width:100%}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
}

/* roulang page: category3 */
:root{
  --brand:#1D5BFF;
  --brand-dark:#0F3FBF;
  --brand-soft:rgba(29,91,255,.10);
  --orange:#FF6B35;
  --teal:#12B39A;
  --teal-soft:rgba(18,179,154,.12);
  --bg:#F5F7FB;
  --surface:#FFFFFF;
  --band:#EEF3FC;
  --footer:#0B1B33;
  --text:#101828;
  --text-2:#475467;
  --text-3:#98A2B3;
  --border:#E4E9F2;
  --line:#EDF1F7;
  --r-btn:10px;
  --r-tag:999px;
  --r-sm:12px;
  --r-card:16px;
  --r-hero:20px;
  --r-img:14px;
  --sh-1:0 1px 2px rgba(16,24,40,.05);
  --sh-2:0 8px 24px rgba(16,24,40,.08);
  --sh-3:0 16px 40px rgba(29,91,255,.14);
  --container:1200px;
  --font:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:inherit;text-decoration:none;transition:color .18s ease}
a:hover{color:var(--brand)}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700;letter-spacing:.2px}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section--band{background:var(--band)}
.section--tight{padding-top:56px}
.section__head{max-width:760px;margin-bottom:44px}
.section__head--center{margin-left:auto;margin-right:auto;text-align:center}
.kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.6px;
  color:var(--brand);background:var(--brand-soft);
  padding:5px 12px;border-radius:var(--r-tag);margin-bottom:16px;
}
.section__title{font-size:32px;position:relative;padding-left:16px}
.section__title::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;
  border-radius:4px;background:var(--brand);
}
.section__head--center .section__title{padding-left:0}
.section__head--center .section__title::before{display:none}
.section__desc{margin-top:14px;color:var(--text-2);font-size:16px}
.muted{color:var(--text-2)}
.small{font-size:14px}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#fff;border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh-2)}
.nav{
  max-width:var(--container);margin:0 auto;padding:0 24px;
  height:72px;display:flex;align-items:center;gap:24px;
}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand__mark{
  width:34px;height:34px;border-radius:10px;background:var(--brand);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:17px;font-weight:700;letter-spacing:0;
}
.brand__text{font-size:17px;font-weight:700;color:var(--text);letter-spacing:.2px}
.brand__text i{font-style:normal;color:var(--brand);margin:0 1px}
.nav__menu{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav__link{
  display:inline-block;padding:9px 14px;border-radius:var(--r-tag);
  font-size:15px;color:var(--text-2);font-weight:500;
  border-bottom:2px solid transparent;transition:all .16s ease;
}
.nav__link:hover{color:var(--brand);border-bottom-color:var(--brand)}
.nav__link.is-active{background:var(--brand-soft);color:var(--brand);font-weight:600;border-bottom-color:transparent}
.nav__actions{display:flex;align-items:center;gap:14px;margin-left:8px}
.nav__text-link{font-size:15px;color:var(--text-2);font-weight:500}
.nav__text-link:hover{color:var(--brand)}
.nav__burger{
  display:none;width:42px;height:42px;border-radius:10px;
  align-items:center;justify-content:center;border:1px solid var(--border);
}
.nav__burger span{
  width:18px;height:2px;background:var(--text);border-radius:2px;position:relative;display:block;
}
.nav__burger span::before,.nav__burger span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);border-radius:2px;
}
.nav__burger span::before{top:-6px}
.nav__burger span::after{top:6px}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;white-space:nowrap;
  transition:all .18s ease;border:1px solid transparent;
}
.btn--primary{background:var(--brand);color:#fff;box-shadow:var(--sh-1)}
.btn--primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-3)}
.btn--orange{background:var(--orange);color:#fff;box-shadow:var(--sh-1)}
.btn--orange:hover{background:#e85a26;color:#fff;transform:translateY(-1px);box-shadow:0 14px 32px rgba(255,107,53,.28)}
.btn--outline{background:#fff;color:var(--brand);border-color:var(--brand)}
.btn--outline:hover{background:var(--brand-soft);color:var(--brand-dark);transform:translateY(-1px)}
.btn--outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.55)}
.btn--outline-light:hover{background:rgba(255,255,255,.12);color:#fff;transform:translateY(-1px)}
.btn--lg{height:48px;padding:0 26px}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none;transform:none;box-shadow:none}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-weight:600;font-size:15px}
.link-arrow::after{content:"→";transition:transform .18s ease}
.link-arrow:hover::after{transform:translateX(3px)}
.link-arrow:hover{color:var(--brand-dark)}

/* ---------- Hero ---------- */
.hero{
  background:#fff;border-bottom:1px solid var(--line);
  padding:56px 0 56px;
}
.hero__grid{display:grid;grid-template-columns:1.06fr .94fr;gap:48px;align-items:center;min-height:42vh}
.hero__title{font-size:44px;line-height:1.22;letter-spacing:-.4px}
.hero__title em{font-style:normal;color:var(--brand-dark)}
.hero__sub{margin-top:16px;font-size:18px;font-weight:600;color:var(--text)}
.hero__desc{margin-top:14px;color:var(--text-2);font-size:16px;max-width:560px}
.hero__actions{display:flex;gap:14px;margin-top:28px;flex-wrap:wrap}
.hero__chips{display:flex;gap:22px;margin-top:26px;flex-wrap:wrap}
.hero__chip{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-2)}
.hero__chip i{
  width:20px;height:20px;border-radius:6px;background:var(--teal-soft);color:var(--teal);
  display:inline-flex;align-items:center;justify-content:center;font-style:normal;font-size:12px;font-weight:700;
}
.hero__visual{position:relative}
.hero__visual img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-hero);box-shadow:var(--sh-2)}
.hero__badge{
  position:absolute;left:18px;bottom:18px;background:rgba(11,27,51,.82);color:#fff;
  padding:8px 14px;border-radius:var(--r-tag);font-size:13px;font-weight:600;letter-spacing:.3px;
}

/* ---------- 导语 ---------- */
.intro{display:grid;grid-template-columns:1fr 1fr;gap:28px}
.intro__col{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--sh-1);
}
.intro__col h3{font-size:19px;font-weight:600;margin-bottom:12px;color:var(--text)}
.intro__col p{color:var(--text-2);font-size:15.5px}
.intro__num{
  display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;
  border-radius:9px;background:var(--brand-soft);color:var(--brand);font-size:13px;font-weight:700;margin-bottom:14px;
}

/* ---------- 要点网格 ---------- */
.points{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.point{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r-card);
  padding:26px;box-shadow:var(--sh-1);transition:all .18s ease;
}
.point:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(29,91,255,.3)}
.point__icon{
  width:42px;height:42px;border-radius:12px;background:var(--brand-soft);color:var(--brand);
  display:inline-flex;align-items:center;justify-content:center;font-size:18px;margin-bottom:16px;
}
.point h3{font-size:18px;font-weight:600;margin-bottom:8px}
.point p{color:var(--text-2);font-size:15px}

/* ---------- 折叠清单 ---------- */
.acc{display:grid;gap:12px}
.acc__item{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r-sm);
  box-shadow:var(--sh-1);overflow:hidden;transition:border-color .18s ease,box-shadow .18s ease;
}
.acc__item:hover{border-color:rgba(29,91,255,.3)}
.acc__item.is-open{border-color:rgba(29,91,255,.35);box-shadow:var(--sh-2)}
.acc__head{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  width:100%;text-align:left;padding:20px 24px;font-size:16px;font-weight:600;color:var(--text);
}
.acc__head:hover{color:var(--brand)}
.acc__index{
  font-size:12px;font-weight:700;color:#fff;background:var(--orange);
  border-radius:8px;padding:3px 9px;margin-right:12px;flex:0 0 auto;
}
.acc__label{display:flex;align-items:center;min-width:0}
.acc__icon{
  width:26px;height:26px;border-radius:8px;border:1px solid var(--border);
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--brand);font-size:18px;line-height:1;flex:0 0 auto;
  transition:transform .22s ease,background .18s ease;
}
.acc__item.is-open .acc__icon{transform:rotate(45deg);background:var(--brand-soft);border-color:rgba(29,91,255,.3)}
.acc__body{max-height:0;overflow:hidden;transition:max-height .24s ease}
.acc__inner{padding:0 24px 22px;color:var(--text-2);font-size:15px;border-top:1px solid var(--line);padding-top:16px;margin:0 24px 22px;padding-left:0;padding-right:0}
.acc__inner ul{margin-top:10px;display:grid;gap:8px}
.acc__inner li{position:relative;padding-left:16px}
.acc__inner li::before{
  content:"";position:absolute;left:0;top:10px;width:6px;height:6px;border-radius:2px;background:var(--brand);
}

/* ---------- 对比面板 ---------- */
.compare{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r-card);
  box-shadow:var(--sh-1);overflow:hidden;
}
.compare__head{
  display:grid;grid-template-columns:.9fr 1.1fr;background:var(--band);
  border-bottom:1px solid var(--border);
}
.compare__head span{
  padding:16px 26px;font-size:14px;font-weight:700;color:var(--brand-dark);letter-spacing:.5px;
}
.compare__head span:first-child{border-right:1px solid var(--border)}
.compare__row{
  display:grid;grid-template-columns:.9fr 1.1fr;
  border-bottom:1px solid var(--line);
}
.compare__row:last-child{border-bottom:0}
.compare__q{
  padding:22px 26px;border-right:1px solid var(--line);
  font-size:15.5px;font-weight:600;color:var(--text);display:flex;gap:10px;align-items:flex-start;
}
.compare__q i{
  font-style:normal;color:var(--brand);font-weight:700;flex:0 0 auto;
}
.compare__a{padding:22px 26px;font-size:15px;color:var(--text-2)}
.compare__row:hover{background:#FAFCFF}

/* ---------- FAQ ---------- */
.faq{display:grid;gap:14px}
.faq__item{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r-img);
  box-shadow:var(--sh-1);overflow:hidden;transition:border-color .18s ease,box-shadow .18s ease;
}
.faq__item:hover{border-color:rgba(29,91,255,.3)}
.faq__item.is-open{box-shadow:var(--sh-2);border-color:rgba(29,91,255,.35)}
.faq__q{
  width:100%;text-align:left;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 24px;font-size:16px;font-weight:600;color:var(--text);
}
.faq__q:hover{color:var(--brand)}
.faq__sign{
  width:26px;height:26px;border-radius:50%;background:var(--brand-soft);color:var(--brand);
  display:inline-flex;align-items:center;justify-content:center;font-size:17px;line-height:1;flex:0 0 auto;
  transition:transform .22s ease;
}
.faq__item.is-open .faq__sign{transform:rotate(45deg)}
.faq__a{max-height:0;overflow:hidden;transition:max-height .22s ease}
.faq__a p{padding:0 24px 22px;color:var(--text-2);font-size:15px;line-height:1.8}

/* ---------- 相关资讯 ---------- */
.news{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r-card);
  box-shadow:var(--sh-1);overflow:hidden;display:flex;flex-direction:column;
  transition:all .18s ease;
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(29,91,255,.3)}
.news-card__thumb{aspect-ratio:8/5;overflow:hidden;background:var(--band)}
.news-card__thumb img{width:100%;height:100%;object-fit:cover;border-radius:0}
.news-card__body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-card__meta{display:flex;align-items:center;gap:12px;font-size:13px;color:var(--text-3)}
.tag{
  display:inline-block;padding:4px 10px;border-radius:var(--r-tag);
  font-size:12px;font-weight:600;background:var(--brand-soft);color:var(--brand);
}
.tag--teal{background:var(--teal-soft);color:#0B7F6E}
.news-card__title{font-size:18px;font-weight:600;line-height:1.5;color:var(--text)}
.news-card:hover .news-card__title{color:var(--brand)}
.news-card__desc{font-size:15px;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* ---------- CTA ---------- */
.cta-band{background:var(--footer);color:#fff;padding:56px 0}
.cta-band__inner{
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-band h2{font-size:28px;color:#fff}
.cta-band p{margin-top:10px;color:#C7D2E4;font-size:15px;max-width:620px}
.cta-band__actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- Footer ---------- */
.site-footer{background:var(--footer);color:#C7D2E4;padding:64px 0 0}
.footer__grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}
.footer__brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:700;margin-bottom:16px}
.footer__desc{font-size:14.5px;line-height:1.8;color:#C7D2E4;max-width:340px}
.footer__col h4{font-size:15px;color:#fff;font-weight:600;margin-bottom:16px}
.footer__col ul{display:grid;gap:10px}
.footer__col a{font-size:14.5px;color:#C7D2E4}
.footer__col a:hover{color:#fff}
.footer__bottom{
  margin-top:48px;border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0 26px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13.5px;color:#8FA2BF;
}

/* ---------- 移动抽屉 ---------- */
.drawer{
  position:fixed;inset:0;z-index:80;background:rgba(11,27,51,.45);
  opacity:0;visibility:hidden;transition:opacity .2s ease,visibility .2s ease;
}
.drawer.is-open{opacity:1;visibility:visible}
.drawer__panel{
  position:absolute;right:0;top:0;bottom:0;width:min(88vw,380px);background:#fff;
  display:flex;flex-direction:column;padding:20px 22px 22px;
  transform:translateX(100%);transition:transform .24s ease;
}
.drawer.is-open .drawer__panel{transform:translateX(0)}
.drawer__head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer__close{
  width:38px;height:38px;border-radius:10px;border:1px solid var(--border);
  display:inline-flex;align-items:center;justify-content:center;font-size:18px;color:var(--text-2);
}
.drawer__link{
  display:block;font-size:18px;line-height:56px;color:var(--text);font-weight:500;
  border-bottom:1px solid var(--line);
}
.drawer__link.is-active{color:var(--brand);font-weight:600}
.drawer__cta{margin-top:auto;padding-top:22px}
.drawer__cta .btn{width:100%}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .nav__menu{gap:0}
  .nav__link{padding:8px 10px;font-size:14.5px}
  .points{grid-template-columns:repeat(2,1fr)}
  .footer__grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px}
}
@media (max-width:991px){
  .section{padding:64px 0}
  .hero{padding:44px 0}
  .hero__grid{grid-template-columns:1fr;gap:32px;min-height:auto}
  .hero__title{font-size:34px}
  .hero__visual img{aspect-ratio:16/9}
  .intro{grid-template-columns:1fr}
  .news{grid-template-columns:1fr 1fr}
  .nav__menu,.nav__actions .nav__text-link{display:none}
  .nav__burger{display:inline-flex}
  .nav__actions .btn--primary{display:none}
  .nav__actions{margin-left:auto}
  .section__title{font-size:26px}
  .cta-band h2{font-size:24px}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .nav{height:60px;padding:0 18px}
  .hero__title{font-size:30px}
  .hero__sub{font-size:16.5px}
  .hero__actions .btn{width:100%}
  .hero__chips{gap:14px}
  .points{grid-template-columns:1fr}
  .compare__head,.compare__row{grid-template-columns:1fr}
  .compare__head span:first-child{border-right:0;border-bottom:1px solid var(--border)}
  .compare__q{border-right:0;border-bottom:1px dashed var(--line);padding-bottom:14px}
  .news{grid-template-columns:1fr}
  .footer__grid{grid-template-columns:1fr 1fr;gap:28px}
  .footer__bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:575px){
  .section{padding:44px 0}
  .section__head{margin-bottom:28px}
  .section__title{font-size:22px}
  .brand__text{font-size:16px}
  .hero__title{font-size:26px}
  .acc__head,.faq__q{padding:16px 18px;font-size:15.5px}
  .acc__inner{margin:0 18px 18px;padding-top:14px}
  .faq__a p{padding:0 18px 18px}
  .footer__grid{grid-template-columns:1fr}
  .cta-band__actions .btn{width:100%}
}

/* roulang page: category4 */
:root{
  --brand:#1D5BFF;
  --brand-dark:#0F3FBF;
  --brand-soft:#E8F0FF;
  --brand-soft-2:#F0F5FF;
  --accent:#FF6B35;
  --accent-dark:#E3562200;
  --teal:#12B39A;
  --teal-soft:#E4F7F3;
  --bg:#F5F7FB;
  --card:#FFFFFF;
  --band:#EEF3FC;
  --footer:#0B1B33;
  --text:#101828;
  --text-2:#475467;
  --text-3:#98A2B3;
  --border:#E4E9F2;
  --line:#EDF1F7;
  --r-btn:10px;
  --r-tag:999px;
  --r-sm:12px;
  --r-card:16px;
  --r-hero:20px;
  --r-img:14px;
  --sh-1:0 1px 2px rgba(16,24,40,.05);
  --sh-2:0 8px 24px rgba(16,24,40,.08);
  --sh-3:0 16px 40px rgba(29,91,255,.14);
  --ease:180ms ease;
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,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;border-radius:var(--r-img)}
a{color:var(--brand);text-decoration:none;transition:color var(--ease),background var(--ease),border-color var(--ease),box-shadow var(--ease),transform var(--ease)}
a:hover{color:var(--brand-dark)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700;color:var(--text)}
p{margin:0}
button{font:inherit;color:inherit;cursor:pointer}
input,textarea,select{font:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section--band{background:var(--band)}
.section--tight{padding:64px 0}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;background:#fff;
  border-bottom:1px solid var(--border);
  transition:box-shadow var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh-2)}
.nav{
  max-width:var(--container);margin:0 auto;padding:0 24px;
  height:72px;display:flex;align-items:center;gap:28px;
}
.brand{display:flex;align-items:center;gap:10px;color:var(--text);font-weight:700;font-size:18px;white-space:nowrap}
.brand:hover{color:var(--text)}
.brand__mark{
  width:34px;height:34px;border-radius:10px;background:var(--brand);color:#fff;
  display:grid;place-items:center;font-size:17px;font-weight:700;flex:0 0 auto;
}
.brand__text i{font-style:normal;color:var(--brand);margin:0 1px}
.nav__menu{display:flex;align-items:center;gap:4px}
.nav__link{
  display:block;padding:8px 14px;border-radius:var(--r-tag);
  font-size:15px;color:var(--text-2);white-space:nowrap;
  position:relative;
}
.nav__link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform 160ms ease;
}
.nav__link:hover{color:var(--brand);background:var(--brand-soft-2)}
.nav__link:hover::after{transform:scaleX(1)}
.nav__link.is-active{color:var(--brand);background:var(--brand-soft);font-weight:600}
.nav__link.is-active::after{display:none}
.nav__actions{margin-left:auto;display:flex;align-items:center;gap:14px}
.nav__text-link{font-size:15px;color:var(--text-2)}
.nav__text-link:hover{color:var(--brand)}
.nav__menu-cta{display:none}
.nav__burger{
  display:none;width:44px;height:44px;border:1px solid var(--border);background:#fff;
  border-radius:12px;position:relative;
}
.nav__burger span,
.nav__burger span::before,
.nav__burger span::after{
  position:absolute;left:12px;width:20px;height:2px;background:var(--text);border-radius:2px;
  transition:transform var(--ease),opacity var(--ease);
}
.nav__burger span{top:21px}
.nav__burger span::before{content:"";left:0;top:-6px}
.nav__burger span::after{content:"";left:0;top:6px}
.nav__burger.is-open span{background:transparent}
.nav__burger.is-open span::before{transform:translateY(6px) rotate(45deg)}
.nav__burger.is-open span::after{transform:translateY(-6px) rotate(-45deg)}
.nav-mask{
  position:fixed;inset:0;background:rgba(11,27,51,.42);z-index:70;
  opacity:0;visibility:hidden;transition:opacity var(--ease),visibility var(--ease);
}
.nav-mask.is-open{opacity:1;visibility:visible}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:background var(--ease),color var(--ease),border-color var(--ease),box-shadow var(--ease),transform var(--ease);
  white-space:nowrap;
}
.btn--primary{background:var(--brand);color:#fff;box-shadow:var(--sh-1)}
.btn--primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-3)}
.btn--primary:active{transform:translateY(0);background:var(--brand-dark)}
.btn--accent{background:var(--accent);color:#fff;box-shadow:var(--sh-1)}
.btn--accent:hover{background:#E85A26;color:#fff;transform:translateY(-1px);box-shadow:0 12px 28px rgba(255,107,53,.28)}
.btn--ghost{background:#fff;color:var(--brand);border-color:rgba(29,91,255,.4)}
.btn--ghost:hover{background:var(--brand-soft);color:var(--brand-dark);border-color:var(--brand)}
.btn--light{background:#fff;color:var(--footer)}
.btn--light:hover{background:#E8F0FF;color:var(--footer)}
.btn--outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.55)}
.btn--outline-light:hover{background:rgba(255,255,255,.12);color:#fff}
.btn--lg{height:50px;padding:0 26px;font-size:16px}
.btn--block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none;transform:none;box-shadow:none}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--brand)}
.text-link i{transition:transform var(--ease)}
.text-link:hover i{transform:translateX(3px)}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:var(--r-tag);font-size:12.5px;font-weight:600;
  background:rgba(29,91,255,.1);color:var(--brand-dark);
}
.badge--teal{background:rgba(18,179,154,.12);color:#0A7F6E}
.badge--accent{background:rgba(255,107,53,.12);color:#C64A1C}
.badge--plain{background:#F2F4F8;color:var(--text-2)}
.chip{
  display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border-radius:var(--r-tag);
  background:#fff;border:1px solid var(--border);font-size:14px;color:var(--text-2);
}

/* ---------- 面包屑 ---------- */
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-3);margin-bottom:18px;flex-wrap:wrap}
.breadcrumb a{color:var(--text-2)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .current{color:var(--text);font-weight:600}

/* ---------- 首屏 ---------- */
.hero--cat{
  position:relative;background:#fff;border-bottom:1px solid var(--line);
  padding:56px 0 72px;overflow:hidden;
}
.hero--cat::after{
  content:"";position:absolute;right:-160px;top:-140px;width:420px;height:420px;border-radius:50%;
  background:var(--brand-soft-2);z-index:0;
}
.hero__grid{
  position:relative;z-index:1;
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,520px);
  gap:56px;align-items:center;
}
.hero__eyebrow{margin-bottom:16px}
.hero h1{font-size:44px;line-height:1.22;letter-spacing:-.4px;margin-bottom:18px}
.hero__sub{font-size:17px;color:var(--text-2);margin-bottom:28px}
.hero__actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px}
.hero__trust{display:flex;flex-wrap:wrap;gap:22px}
.hero__trust li{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-2)}
.hero__trust i{color:var(--teal)}
.hero__media{position:relative}
.hero__media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-hero);
  box-shadow:var(--sh-2);background:var(--band);
}
.hero__media-tag{
  position:absolute;left:18px;bottom:18px;background:#fff;border:1px solid var(--border);
  border-radius:var(--r-sm);padding:10px 14px;box-shadow:var(--sh-2);font-size:13.5px;color:var(--text-2);
  display:flex;align-items:center;gap:8px;
}
.hero__media-tag i{color:var(--brand)}

/* ---------- 导语 ---------- */
.intro__grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:32px}
.intro__card{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--sh-1);
}
.intro__card h2{font-size:22px;margin-bottom:14px}
.intro__card h2::before{
  content:"";display:inline-block;width:4px;height:18px;background:var(--brand);
  border-radius:3px;margin-right:10px;vertical-align:-3px;
}
.intro__card p{font-size:15.5px;color:var(--text-2);line-height:1.9}
.intro__card p + p{margin-top:12px}

/* ---------- 通用板块标题 ---------- */
.section-head{max-width:760px;margin-bottom:44px}
.section-head h2{font-size:32px;margin-bottom:14px}
.section-head h2::before{
  content:"";display:inline-block;width:5px;height:24px;background:var(--brand);
  border-radius:3px;margin-right:12px;vertical-align:-4px;
}
.section-head p{color:var(--text-2);font-size:16px}

/* ---------- 要点网格 ---------- */
.points{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.point{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  padding:26px;box-shadow:var(--sh-1);transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.point:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(29,91,255,.3)}
.point__icon{
  width:46px;height:46px;border-radius:12px;display:grid;place-items:center;
  background:var(--brand-soft);color:var(--brand);font-size:19px;margin-bottom:16px;
}
.point--teal .point__icon{background:var(--teal-soft);color:#0A7F6E}
.point--accent .point__icon{background:rgba(255,107,53,.12);color:#C64A1C}
.point h3{font-size:18px;font-weight:600;margin-bottom:8px}
.point p{font-size:14.5px;color:var(--text-2);line-height:1.8}

/* ---------- 主体：图文交替 + 窄栏 ---------- */
.flow__layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:36px;align-items:start}
.flow__rows{display:flex;flex-direction:column;gap:20px}
.flow-row{
  display:grid;grid-template-columns:220px minmax(0,1fr);gap:26px;align-items:center;
  min-height:160px;background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--sh-1);transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.flow-row:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(29,91,255,.3)}
.flow-row__media{order:1}
.flow-row__body{order:2}
.flow-row--reverse .flow-row__media{order:2}
.flow-row--reverse .flow-row__body{order:1}
.flow-row__media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-img);background:var(--band)}
.flow-row__no{
  display:inline-grid;place-items:center;width:30px;height:30px;border-radius:9px;
  background:var(--accent);color:#fff;font-size:13px;font-weight:700;margin-bottom:10px;
  font-variant-numeric:tabular-nums;
}
.flow-row h3{font-size:19px;font-weight:600;margin-bottom:8px}
.flow-row p{font-size:14.5px;color:var(--text-2);line-height:1.8;margin-bottom:12px}

/* 窄栏 */
.flow__aside{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px}
.side-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-1);
}
.side-card--tip{background:var(--brand-soft);border-color:rgba(29,91,255,.22)}
.side-card h3{font-size:17px;font-weight:600;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.side-card h3 i{color:var(--brand)}
.side-list li{
  display:flex;gap:10px;font-size:14.5px;color:var(--text-2);line-height:1.75;padding:9px 0;
  border-bottom:1px dashed var(--border);
}
.side-list li:last-child{border-bottom:0}
.side-list i{color:var(--teal);margin-top:5px;font-size:12px}
.side-card .btn{margin-top:16px}
.side-note{font-size:13.5px;color:var(--text-2);line-height:1.8}

/* ---------- FAQ ---------- */
.faq{display:grid;gap:14px;max-width:920px}
.faq-item{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-hero);
  box-shadow:var(--sh-1);overflow:hidden;transition:border-color var(--ease),box-shadow var(--ease);
}
.faq-item:hover{border-color:rgba(29,91,255,.3);box-shadow:var(--sh-2)}
.faq-item__head{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  background:none;border:0;padding:20px 24px;text-align:left;font-size:16px;font-weight:600;color:var(--text);
}
.faq-item__head i{
  color:var(--brand);font-size:15px;flex:0 0 auto;transition:transform 220ms ease;
}
.faq-item.is-open .faq-item__head i{transform:rotate(45deg)}
.faq-item__body{
  max-height:0;overflow:hidden;transition:max-height 220ms ease;
}
.faq-item__body p{
  padding:0 24px 22px;font-size:15px;color:var(--text-2);line-height:1.8;
}

/* ---------- 底部 CTA ---------- */
.cta-band{
  position:relative;background:var(--footer);color:#fff;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:url(/assets/images/backpic/back-2.webp) center/cover no-repeat;
  opacity:.22;
}
.cta-band__inner{
  position:relative;z-index:1;padding:72px 0;display:flex;align-items:center;
  justify-content:space-between;gap:36px;flex-wrap:wrap;
}
.cta-band h2{color:#fff;font-size:30px;margin-bottom:12px}
.cta-band p{color:#C7D2E4;font-size:15.5px;max-width:620px}
.cta-band__actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--footer);color:#C7D2E4;padding:66px 0 26px}
.footer__grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;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{background:var(--brand)}
.footer__desc{font-size:14.5px;line-height:1.85;color:#9FB0C9;max-width:340px}
.footer__col h4{color:#fff;font-size:15.5px;margin-bottom:16px;font-weight:600}
.footer__col li{margin-bottom:11px}
.footer__col a{font-size:14.5px;color:#C7D2E4}
.footer__col a:hover{color:#fff}
.footer__bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13.5px;color:#8FA2BD;
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .hero h1{font-size:38px}
  .section-head h2{font-size:28px}
  .flow__layout{grid-template-columns:minmax(0,1fr) 290px;gap:26px}
  .nav__menu{gap:0}
  .nav__link{padding:8px 10px;font-size:14.5px}
}
@media (max-width:991px){
  .nav{height:60px;gap:16px}
  .nav__text-link,.nav__actions .btn{display:none}
  .nav__burger{display:block}
  .nav__menu{
    position:fixed;top:60px;left:0;right:0;bottom:0;background:#fff;z-index:75;
    flex-direction:column;align-items:stretch;gap:0;
    padding:18px 20px 110px;overflow-y:auto;
    opacity:0;visibility:hidden;transform:translateY(-10px);
    transition:opacity var(--ease),transform var(--ease),visibility var(--ease);
  }
  .nav__menu.is-open{opacity:1;visibility:visible;transform:translateY(0)}
  .nav__link{font-size:18px;line-height:56px;padding:0 10px;border-radius:12px;border-bottom:1px solid var(--line)}
  .nav__link::after{display:none}
  .nav__menu-cta{display:block;position:fixed;left:20px;right:20px;bottom:22px;z-index:78;border-bottom:0}
  .nav__menu-cta .btn{width:100%;height:50px;font-size:16px}
  .hero--cat{padding:40px 0 56px}
  .hero__grid{grid-template-columns:1fr;gap:32px}
  .hero__media{order:2}
  .hero__media img{aspect-ratio:16/9;max-height:280px}
  .hero h1{font-size:30px}
  .hero__sub{font-size:16px}
  .intro__grid{grid-template-columns:1fr}
  .points{grid-template-columns:repeat(2,minmax(0,1fr))}
  .flow__layout{grid-template-columns:1fr}
  .flow__aside{position:static}
  .section{padding:64px 0}
  .footer__grid{grid-template-columns:1fr 1fr;gap:28px}
  .cta-band__inner{padding:56px 0}
  .cta-band h2{font-size:26px}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .nav{padding:0 18px}
  .brand{font-size:16.5px}
  .hero h1{font-size:26px}
  .section-head h2{font-size:24px}
  .points{grid-template-columns:1fr}
  .flow-row{grid-template-columns:1fr;min-height:0;gap:16px}
  .flow-row__media,
  .flow-row--reverse .flow-row__media{order:1}
  .flow-row__body,
  .flow-row--reverse .flow-row__body{order:2}
  .flow-row__media img{aspect-ratio:16/9}
  .hero__actions .btn{width:100%}
  .cta-band__actions{width:100%}
  .cta-band__actions .btn{width:100%}
}
@media (max-width:520px){
  .section{padding:44px 0}
  .hero--cat{padding:32px 0 44px}
  .hero h1{font-size:23px}
  .hero__trust{gap:14px}
  .hero__trust li{font-size:13.5px}
  .faq-item__head{padding:16px 18px;font-size:15px}
  .faq-item__body p{padding:0 18px 18px}
  .footer__grid{grid-template-columns:1fr}
  .footer__bottom{flex-direction:column;gap:8px}
}