/* roulang page: index */
:root{
  --deep:#0C1424;
  --deep-2:#121C31;
  --teal:#17C3B2;
  --teal-dark:#0E9E90;
  --amber:#F2A33C;
  --violet:#7A6BE0;
  --ink:#1A2233;
  --ink-2:#5A6478;
  --ink-3:#8A93A6;
  --page:#F5F7FA;
  --card:#FFFFFF;
  --soft:#EEF1F6;
  --line:#E4E8EF;
  --line-dark:rgba(255,255,255,.10);
  --r-card:16px;
  --r-img:12px;
  --r-btn:12px;
  --r-input:10px;
  --shadow-1:0 1px 2px rgba(12,20,36,.04),0 10px 30px rgba(12,20,36,.06);
  --shadow-2:0 4px 10px rgba(12,20,36,.06),0 18px 40px rgba(12,20,36,.10);
  --w:1200px;
  --section:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--page);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;border-radius:var(--r-img);}
a{color:var(--teal-dark);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--teal);text-decoration:underline;text-underline-offset:3px;}
h1,h2,h3,h4{margin:0 0 16px;color:var(--ink);font-weight:700;letter-spacing:0;}
h1{font-size:48px;line-height:1.25;}
h2{font-size:34px;line-height:1.3;}
h3{font-size:23px;line-height:1.4;font-weight:600;}
h4{font-size:18px;line-height:1.45;font-weight:600;}
p{margin:0 0 16px;}
ul,ol{margin:0 0 16px;padding-left:1.15em;}
li{margin-bottom:8px;}
button,input,textarea,select{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid var(--teal);outline-offset:2px;}
.container{width:100%;max-width:var(--w);margin:0 auto;padding:0 24px;}
.section{padding:var(--section) 0;}
.section--soft{background:var(--soft);}
.section--white{background:#fff;}
.section--deep{background:var(--deep);color:#fff;}
.section--deep h2,.section--deep h3{color:#fff;}
.divider{height:1px;background:var(--line);border:0;margin:0;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--teal-dark);text-transform:uppercase;margin-bottom:14px;}
.eyebrow::before{content:"";width:26px;height:2px;background:var(--teal);display:inline-block;}
.section-head{max-width:760px;margin-bottom:48px;}
.section-head p{color:var(--ink-2);font-size:17px;margin:0;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1.2;cursor:pointer;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
  text-decoration:none;white-space:nowrap;
}
.btn:hover{text-decoration:none;}
.btn--primary{background:var(--teal);color:#08221F;box-shadow:0 2px 8px rgba(23,195,178,.28);}
.btn--primary:hover{background:#0FA79A;color:#06201D;transform:translateY(-1px);box-shadow:0 6px 18px rgba(23,195,178,.34);}
.btn--primary:active{transform:translateY(0);}
.btn--ghost{background:transparent;border-color:rgba(255,255,255,.24);color:#fff;}
.btn--ghost:hover{border-color:var(--teal);color:var(--teal);background:rgba(23,195,178,.08);}
.btn--outline{background:transparent;border-color:#D8DEE9;color:var(--ink);}
.btn--outline:hover{border-color:var(--teal);color:var(--teal-dark);}
.btn--block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.5;pointer-events:none;}
.link-more{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:15px;}
.link-more i{font-size:12px;transition:transform .2s ease;}
.link-more:hover i{transform:translateX(3px);}

/* ---------- badge ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 12px;border-radius:999px;font-size:13px;font-weight:600;line-height:1.4;
}
.badge--teal{background:rgba(23,195,178,.12);color:#0B7D72;}
.badge--amber{background:rgba(242,163,60,.16);color:#9A6212;}
.badge--violet{background:rgba(122,107,224,.14);color:#4E41A8;}
.badge--deep{background:rgba(23,195,178,.16);color:var(--teal);}

/* ---------- topbar + nav ---------- */
.topbar{background:var(--deep);color:rgba(255,255,255,.72);font-size:13px;height:38px;display:flex;align-items:center;}
.topbar .container{display:flex;align-items:center;justify-content:space-between;gap:16px;}
.topbar__left{display:flex;align-items:center;gap:10px;}
.topbar__left i{color:var(--teal);}
.topbar__right{display:flex;align-items:center;gap:18px;}
.topbar__right a{color:rgba(255,255,255,.78);font-size:13px;}
.topbar__right a:hover{color:var(--teal);text-decoration:none;}

.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .25s ease;}
.site-header.is-stuck{box-shadow:0 6px 22px rgba(12,20,36,.08);}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:70px;}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--ink);font-weight:700;font-size:18px;letter-spacing:0;text-decoration:none;}
.logo:hover{text-decoration:none;color:var(--ink);}
.logo__mark{position:relative;width:32px;height:32px;border-radius:10px;background:var(--deep);display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto;}
.logo__mark::before{content:"";width:9px;height:9px;border-radius:50%;background:var(--teal);}
.logo__mark::after{content:"";position:absolute;inset:6px;border:1px solid rgba(255,255,255,.30);border-radius:50%;}
.logo__text b{color:var(--teal-dark);font-weight:700;}
.site-nav{display:flex;align-items:center;gap:4px;}
.site-nav a{
  position:relative;padding:10px 14px;border-radius:10px;color:var(--ink-2);
  font-size:15px;font-weight:500;text-decoration:none;transition:color .2s ease,background .2s ease;
}
.site-nav a:hover{color:var(--teal-dark);background:rgba(23,195,178,.07);text-decoration:none;}
.site-nav a.is-active{color:var(--teal-dark);font-weight:600;}
.site-nav a.is-active::after{content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;background:var(--teal);border-radius:2px;}
.nav-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:12px;background:#fff;color:var(--ink);align-items:center;justify-content:center;cursor:pointer;}
.nav-toggle:hover{border-color:var(--teal);color:var(--teal-dark);}

/* ---------- hero ---------- */
.hero{position:relative;background:var(--deep);color:#fff;overflow:hidden;padding:76px 0 84px;}
.hero::before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.10) 1px,transparent 1px);background-size:24px 24px;pointer-events:none;}
.hero::after{content:"";position:absolute;inset:0;background:radial-gradient(58% 68% at 80% 26%,rgba(23,195,178,.18),transparent 72%);pointer-events:none;}
.hero .container{position:relative;z-index:2;}
.hero h1{color:#fff;font-size:46px;margin-bottom:20px;}
.hero__lead{font-size:17px;line-height:1.85;color:rgba(255,255,255,.76);max-width:560px;margin-bottom:30px;}
.hero__cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:38px;}
.hero__metrics{display:flex;flex-wrap:wrap;gap:34px;padding-top:26px;border-top:1px solid var(--line-dark);}
.hero__metric{min-width:110px;}
.hero__metric strong{display:block;font-size:25px;font-weight:700;color:var(--teal);line-height:1.3;}
.hero__metric span{font-size:13px;color:rgba(255,255,255,.62);}
.hero__visual{position:relative;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line-dark);background:var(--deep-2);}
.hero__visual img{width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:0;}
.hero__visual::after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(12,20,36,.30),rgba(12,20,36,.55)),radial-gradient(rgba(255,255,255,.16) 1px,transparent 1px);background-size:auto,18px 18px;pointer-events:none;}
.hero__chip{position:absolute;left:18px;bottom:18px;z-index:3;background:rgba(12,20,36,.78);border:1px solid var(--line-dark);border-radius:12px;padding:12px 16px;font-size:13px;color:rgba(255,255,255,.85);display:flex;align-items:center;gap:10px;}
.hero__chip i{color:var(--amber);}

/* ---------- stat strip ---------- */
.stat-strip{background:#fff;border-bottom:1px solid var(--line);}
.stat-strip__grid{display:grid;grid-template-columns:repeat(4,1fr);}
.stat-cell{padding:34px 24px;border-left:1px solid var(--line);text-align:left;}
.stat-cell:first-child{border-left:0;}
.stat-cell strong{display:block;font-size:30px;font-weight:700;color:var(--ink);line-height:1.25;}
.stat-cell strong em{font-style:normal;font-size:16px;color:var(--teal-dark);margin-left:2px;}
.stat-cell span{font-size:14px;color:var(--ink-3);}

/* ---------- value rows ---------- */
.value-row{display:flex;gap:22px;padding:26px 0;border-top:1px solid var(--line);}
.value-row:last-child{border-bottom:1px solid var(--line);}
.value-row__idx{flex:0 0 auto;width:44px;height:44px;border-radius:12px;background:rgba(23,195,178,.12);color:var(--teal-dark);font-weight:700;display:flex;align-items:center;justify-content:center;font-size:15px;}
.value-row__body h3{margin-bottom:6px;font-size:20px;}
.value-row__body p{margin:0;color:var(--ink-2);font-size:15.5px;}

/* ---------- feature blocks ---------- */
.feature-block{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;padding:44px 0;}
.feature-block__media{border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);background:var(--soft);box-shadow:var(--shadow-1);}
.feature-block__media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0;transition:transform .4s ease;}
.feature-block__media:hover img{transform:scale(1.03);}
.feature-block__list{list-style:none;padding:0;margin:0 0 22px;}
.feature-block__list li{position:relative;padding-left:24px;margin-bottom:12px;color:var(--ink-2);font-size:15.5px;}
.feature-block__list li::before{content:"";position:absolute;left:0;top:12px;width:14px;height:2px;border-radius:2px;background:var(--teal);}
.feature-block--rev .feature-block__media{order:2;}

/* ---------- tabs / scenes ---------- */
.scene-tabs{display:flex;gap:8px;flex-wrap:wrap;border:0;margin:0 0 30px;}
.scene-tabs .tabs-title{float:none;}
.scene-tabs .tabs-title>a{
  display:block;padding:11px 22px;border-radius:999px;border:1px solid var(--line);
  background:#fff;color:var(--ink-2);font-size:15px;font-weight:600;line-height:1.3;
}
.scene-tabs .tabs-title>a:hover{background:rgba(23,195,178,.07);color:var(--teal-dark);}
.scene-tabs .tabs-title.is-active>a{background:var(--deep);border-color:var(--deep);color:#fff;}
.tabs-content{border:0;background:transparent;margin:0;}
.tabs-panel{padding:0;}
.scene-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:36px;box-shadow:var(--shadow-1);}
.scene-grid h3{font-size:22px;}
.scene-grid p{color:var(--ink-2);}
.scene-list{list-style:none;padding:0;margin:0;}
.scene-list li{display:flex;gap:10px;align-items:flex-start;margin-bottom:10px;font-size:15.5px;color:var(--ink-2);}
.scene-list li i{color:var(--teal);margin-top:5px;}
.scene-grid img{aspect-ratio:4/3;object-fit:cover;width:100%;}

/* ---------- cases ---------- */
.case-main{display:grid;grid-template-columns:1.05fr 1fr;gap:0;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-1);height:100%;transition:border-color .25s ease,transform .25s ease,box-shadow .25s ease;}
.case-main:hover{border-color:rgba(23,195,178,.5);transform:translateY(-2px);box-shadow:var(--shadow-2);}
.case-main__media{overflow:hidden;}
.case-main__media img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .4s ease;}
.case-main:hover .case-main__media img{transform:scale(1.03);}
.case-main__body{padding:32px;}
.case-main__body p{color:var(--ink-2);font-size:15.5px;}
.case-metric{display:inline-flex;align-items:baseline;gap:8px;margin:6px 0 18px;}
.case-metric strong{font-size:28px;color:var(--amber);font-weight:700;}
.case-metric span{font-size:13px;color:var(--ink-3);}
.case-mini{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:26px;box-shadow:var(--shadow-1);height:100%;display:flex;flex-direction:column;gap:10px;transition:border-color .25s ease,transform .25s ease,box-shadow .25s ease;}
.case-mini:hover{border-color:rgba(23,195,178,.5);transform:translateY(-2px);box-shadow:var(--shadow-2);}
.case-mini p{color:var(--ink-2);font-size:15px;margin:0;}
.case-mini .case-metric{margin:2px 0 6px;}
.case-mini .case-metric strong{font-size:23px;}

/* ---------- pricing ---------- */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;align-items:stretch;}
.price-card{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:32px 28px;display:flex;flex-direction:column;box-shadow:var(--shadow-1);transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;}
.price-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);}
.price-card--hot{background:var(--deep);border-color:var(--teal);color:#fff;}
.price-card--hot h3,.price-card--hot .price-card__name{color:#fff;}
.price-card--hot .price-card__desc{color:rgba(255,255,255,.66);}
.price-card--hot .price-card__list li{color:rgba(255,255,255,.80);}
.price-card--hot .price-card__list li i{color:var(--teal);}
.price-card__flag{position:absolute;top:-13px;left:28px;background:var(--amber);color:#3B2405;font-size:12.5px;font-weight:700;padding:5px 12px;border-radius:999px;}
.price-card__name{font-size:15px;font-weight:600;color:var(--teal-dark);margin-bottom:10px;}
.price-card__price{font-size:32px;font-weight:700;line-height:1.2;margin-bottom:6px;}
.price-card__price small{font-size:14px;font-weight:500;color:var(--ink-3);margin-left:4px;}
.price-card--hot .price-card__price small{color:rgba(255,255,255,.6);}
.price-card__desc{font-size:14px;color:var(--ink-3);margin-bottom:22px;}
.price-card__list{list-style:none;padding:0;margin:0 0 26px;flex:1;}
.price-card__list li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--ink-2);margin-bottom:11px;}
.price-card__list li i{color:var(--teal);margin-top:5px;font-size:13px;}
.price-note{margin-top:26px;font-size:14px;color:var(--ink-3);text-align:center;}

/* ---------- news (CMS) ---------- */
.news-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.news-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-1);transition:border-color .25s ease,transform .25s ease,box-shadow .25s ease;display:flex;}
.news-card:hover{border-color:rgba(23,195,178,.5);transform:translateY(-2px);box-shadow:var(--shadow-2);}
.news-card__link{display:flex;flex-direction:column;width:100%;color:inherit;text-decoration:none;}
.news-card__link:hover{text-decoration:none;color:inherit;}
.news-card__thumb{overflow:hidden;background:var(--soft);}
.news-card__thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0;transition:transform .4s ease;}
.news-card:hover .news-card__thumb img{transform:scale(1.03);}
.news-card__body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1;}
.news-card__body .badge{align-self:flex-start;margin-bottom:12px;}
.news-card__title{font-size:17px;line-height:1.5;margin:0 0 10px;font-weight:600;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-card__desc{font-size:14px;color:var(--ink-2);margin:0 0 16px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-card__meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--ink-3);border-top:1px solid var(--line);padding-top:12px;}
.news-card__meta i{color:var(--teal);}
.news-empty{background:#fff;border:1px dashed #D8DEE9;border-radius:var(--r-card);padding:56px 28px;text-align:center;}
.news-empty__dots{width:74px;height:74px;margin:0 auto 18px;border-radius:999px;background:var(--deep);position:relative;}
.news-empty__dots::before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.5) 1px,transparent 1px);background-size:12px 12px;border-radius:999px;}
.news-empty p{color:var(--ink-2);margin:0 0 18px;}

/* ---------- FAQ ---------- */
.faq-acc{border:0;background:transparent;margin:0;}
.faq-acc .accordion-item{border:0;border-top:1px solid var(--line);}
.faq-acc .accordion-item:last-child{border-bottom:1px solid var(--line);}
.faq-acc .accordion-title{
  border:0;background:transparent;padding:20px 44px 20px 0;font-size:17px;font-weight:600;color:var(--ink);
  display:flex;align-items:center;gap:14px;line-height:1.6;
}
.faq-acc .accordion-title:hover{background:transparent;color:var(--teal-dark);}
.faq-acc .accordion-title::before{
  content:"+";position:absolute;right:8px;top:50%;transform:translateY(-50%);
  font-size:22px;font-weight:400;color:var(--teal-dark);line-height:1;
}
.faq-acc .accordion-item.is-active>.accordion-title::before{content:"−";}
.faq-idx{flex:0 0 auto;width:26px;height:26px;border-radius:8px;background:rgba(23,195,178,.14);color:var(--teal-dark);font-size:12.5px;font-weight:700;display:inline-flex;align-items:center;justify-content:center;}
.faq-acc .accordion-content{border:0;padding:0 44px 22px 40px;background:transparent;color:var(--ink-2);font-size:15.5px;line-height:1.85;}
.faq-acc .accordion-content p:last-child{margin-bottom:0;}
.faq-aside{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:28px;box-shadow:var(--shadow-1);position:sticky;top:100px;}

/* ---------- CTA band ---------- */
.cta-band{position:relative;background:var(--deep);color:#fff;overflow:hidden;padding:76px 0;}
.cta-band::before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.10) 1px,transparent 1px);background-size:22px 22px;pointer-events:none;}
.cta-band .container{position:relative;z-index:2;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;}
.cta-band h2{color:#fff;margin-bottom:8px;}
.cta-band p{color:rgba(255,255,255,.7);margin:0;max-width:620px;}
.cta-band__actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- footer ---------- */
.site-footer{background:var(--deep);color:rgba(255,255,255,.68);padding:64px 0 0;font-size:14px;}
.footer-grid{display:grid;grid-template-columns:1.2fr 1fr 1fr 1.4fr;gap:40px;padding-bottom:48px;}
.site-footer h4{color:#fff;font-size:14px;font-weight:600;letter-spacing:.02em;margin-bottom:18px;}
.site-footer a{color:rgba(255,255,255,.68);font-size:14px;}
.site-footer a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.footer-brand .logo{color:#fff;margin-bottom:16px;}
.footer-brand .logo__text b{color:var(--teal);}
.footer-brand p{color:rgba(255,255,255,.6);font-size:14px;margin-bottom:16px;}
.footer-contact{list-style:none;padding:0;margin:0;}
.footer-contact li{display:flex;gap:10px;align-items:flex-start;margin-bottom:10px;color:rgba(255,255,255,.66);}
.footer-contact i{color:var(--teal);margin-top:5px;font-size:13px;}
.footer-links{list-style:none;padding:0;margin:0;}
.footer-links li{margin-bottom:11px;}
.footer-sub p{color:rgba(255,255,255,.6);margin-bottom:16px;}
.footer-form label{display:block;font-size:13px;color:rgba(255,255,255,.66);margin-bottom:8px;}
.footer-form input{
  width:100%;height:46px;border-radius:var(--r-input);border:1px solid var(--line-dark);
  background:rgba(255,255,255,.04);color:#fff;padding:0 14px;margin-bottom:12px;
}
.footer-form input::placeholder{color:rgba(255,255,255,.38);}
.footer-form input:focus{outline:none;border-color:var(--teal);background:rgba(23,195,178,.08);}
.footer-form .hint{font-size:13px;color:rgba(255,255,255,.45);margin:8px 0 0;}
.footer-bottom{border-top:1px solid var(--line-dark);padding:20px 0;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.48);}
.footer-bottom a{font-size:13px;color:rgba(255,255,255,.55);}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  :root{--section:80px;}
  h1{font-size:42px;}
  .hero h1{font-size:40px;}
}
@media (max-width:1023px){
  :root{--section:72px;}
  h1{font-size:36px;}
  h2{font-size:28px;}
  .hero h1{font-size:34px;}
  .nav-toggle{display:inline-flex;}
  .site-nav{
    position:absolute;left:0;right:0;top:100%;background:#fff;border-bottom:1px solid var(--line);
    flex-direction:column;align-items:stretch;gap:0;padding:8px 16px 18px;display:none;
    box-shadow:0 18px 34px rgba(12,20,36,.10);
  }
  .site-nav.is-open{display:flex;}
  .site-nav a{padding:15px 12px;border-radius:10px;font-size:16px;}
  .site-nav a.is-active::after{display:none;}
  .site-nav a.is-active{background:rgba(23,195,178,.09);}
  .nav-actions .btn{display:none;}
  .nav-wrap{position:relative;}
  .stat-strip__grid{grid-template-columns:repeat(2,1fr);}
  .stat-cell{border-left:1px solid var(--line);}
  .stat-cell:nth-child(odd){border-left:0;}
  .feature-block{grid-template-columns:1fr;gap:28px;padding:32px 0;}
  .feature-block--rev .feature-block__media{order:0;}
  .scene-grid{grid-template-columns:1fr;gap:26px;padding:26px;}
  .case-main{grid-template-columns:1fr;}
  .case-main__media img{aspect-ratio:16/10;height:auto;}
  .price-grid{grid-template-columns:1fr;gap:34px;}
  .news-grid{grid-template-columns:repeat(3,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .faq-aside{position:static;margin-bottom:32px;}
}
@media (max-width:767px){
  .topbar__left span{display:none;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .cta-band .container{flex-direction:column;align-items:flex-start;}
}
@media (max-width:639px){
  :root{--section:56px;}
  .container{padding:0 20px;}
  h1{font-size:30px;}
  h2{font-size:24px;}
  h3{font-size:19px;}
  body{font-size:16px;}
  .hero{padding:52px 0 60px;}
  .hero h1{font-size:30px;}
  .hero__lead{font-size:16px;}
  .hero__cta{gap:10px;}
  .hero__cta .btn{width:100%;}
  .hero__metrics{gap:22px;}
  .hero__metric strong{font-size:22px;}
  .stat-strip__grid{grid-template-columns:1fr;}
  .stat-cell{border-left:0;border-top:1px solid var(--line);padding:22px 0;}
  .stat-cell:first-child{border-top:0;}
  .news-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .value-row{gap:14px;padding:22px 0;}
  .value-row__idx{width:38px;height:38px;}
  .scene-tabs{gap:8px;}
  .scene-tabs .tabs-title>a{padding:9px 16px;font-size:14px;}
}

/* roulang page: article */
:root{
  --ink:#0C1424;
  --ink-soft:#16223A;
  --brand:#17C3B2;
  --brand-dark:#0E9E90;
  --brand-hover:#0FA79A;
  --amber:#F2A33C;
  --violet:#7A6BE0;
  --t1:#1A2233;
  --t2:#5A6478;
  --t3:#8A93A6;
  --bg:#F5F7FA;
  --card:#FFFFFF;
  --soft:#EEF1F6;
  --line:#E4E8EF;
  --line-dark:rgba(255,255,255,.10);
  --r-lg:16px;
  --r-md:12px;
  --r-sm:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(12,20,36,.04), 0 10px 30px rgba(12,20,36,.06);
  --sh-2:0 4px 10px rgba(12,20,36,.06), 0 18px 40px rgba(12,20,36,.10);
  --container:1200px;
  --ff:-apple-system, BlinkMacSystemFont, "PingFang SC", "Noto Sans SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--ff);
  font-size:16px;
  line-height:1.8;
  color:var(--t1);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand-dark);text-decoration:none;transition:color .2s ease, border-color .2s ease;}
a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px;}
h1,h2,h3,h4,h5{color:var(--t1);font-weight:700;margin:0;line-height:1.3;letter-spacing:0;}
p{margin:0 0 1.2em;}
ul,ol{margin:0 0 1.2em;padding-left:1.3em;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
::selection{background:rgba(23,195,178,.22);}

/* ---------- foundation override ---------- */
.button,.button.primary,.button.secondary{background:var(--brand);color:var(--ink);border-radius:var(--r-md);font-weight:600;transition:background .2s ease, transform .2s ease, box-shadow .2s ease, color .2s ease;}
.button:hover{background:var(--brand-hover);color:var(--ink);transform:translateY(-1px);}
a{color:var(--brand-dark);}
a:hover,a:focus{color:var(--brand);}
.accordion{border:none;background:transparent;margin:0;}
.accordion-title{border:none;background:transparent;}
.accordion-content{border:none;background:transparent;padding:0;}
.grid-margin-x{margin-left:-12px;margin-right:-12px;}
.grid-margin-x>.cell{padding-left:12px;padding-right:12px;}

/* ---------- layout ---------- */
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}
.section{padding:88px 0;}
.section--soft{background:var(--soft);}
.section--white{background:var(--card);}
.section--dark{
  background:var(--ink);
  color:rgba(255,255,255,.86);
  background-image:radial-gradient(rgba(255,255,255,.10) 1px, transparent 1px);
  background-size:22px 22px;
}
.section--dark h2,.section--dark h3,.section--dark h4{color:#fff;}
.section-head{max-width:720px;margin-bottom:40px;}
.section-head h2{font-size:34px;margin-bottom:16px;}
.section-head p{color:var(--t2);margin:0;}
.section--dark .section-head p{color:rgba(255,255,255,.7);}

/* ---------- top bar ---------- */
.topbar{
  background:var(--ink);
  color:rgba(255,255,255,.78);
  height:38px;
  display:flex;
  align-items:center;
  font-size:13px;
}
.topbar__inner{display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%;}
.topbar__note{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.topbar__links{display:flex;align-items:center;gap:18px;flex-shrink:0;}
.topbar__links a{color:rgba(255,255,255,.78);font-size:13px;}
.topbar__links a:hover{color:#fff;text-decoration:none;}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 22px rgba(12,20,36,.08);}
.nav-wrap{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  min-height:70px;
}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--t1);text-decoration:none;}
.logo:hover{text-decoration:none;color:var(--t1);}
.logo__mark{
  width:26px;height:26px;border-radius:50%;
  background:
    radial-gradient(circle at 50% 50%, var(--brand) 0 3px, transparent 3px),
    conic-gradient(from 200deg, rgba(23,195,178,.9), rgba(122,107,224,.55), rgba(242,163,60,.75), rgba(23,195,178,.9));
  box-shadow:inset 0 0 0 1px rgba(12,20,36,.12);
  flex-shrink:0;
}
.logo__text{font-size:19px;font-weight:700;letter-spacing:.2px;}
.logo__text b{font-weight:600;color:var(--brand-dark);}
.site-nav{display:flex;align-items:center;gap:4px;flex-wrap:wrap;}
.site-nav a{
  position:relative;
  display:inline-block;
  padding:10px 12px;
  font-size:15px;
  color:var(--t2);
  font-weight:500;
  text-decoration:none;
  transition:color .2s ease;
}
.site-nav a::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:2px;
  height:2px;
  background:var(--brand);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .22s ease;
  border-radius:2px;
}
.site-nav a:hover{color:var(--t1);}
.site-nav a:hover::after,
.site-nav a.is-active::after{transform:scaleX(1);}
.site-nav a.is-active{color:var(--t1);font-weight:600;}
.nav-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;
  width:42px;height:42px;
  border:1px solid var(--line);
  background:#fff;
  border-radius:var(--r-sm);
  color:var(--t1);
  cursor:pointer;
  align-items:center;
  justify-content:center;
  transition:border-color .2s ease,color .2s ease;
}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand-dark);}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:13px 26px;
  font-size:15px;
  font-weight:600;
  line-height:1;
  border-radius:var(--r-md);
  border:1px solid transparent;
  cursor:pointer;
  text-decoration:none;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn:hover{text-decoration:none;}
.btn--primary{background:var(--brand);color:var(--ink);}
.btn--primary:hover{background:var(--brand-hover);color:var(--ink);transform:translateY(-1px);box-shadow:0 10px 24px rgba(23,195,178,.28);}
.btn--primary:active{transform:translateY(0);box-shadow:none;}
.btn--ghost{background:transparent;color:var(--t1);border-color:#D8DEE9;}
.btn--ghost:hover{border-color:var(--brand);color:var(--brand-dark);transform:translateY(-1px);}
.btn--light{background:transparent;color:#fff;border-color:rgba(255,255,255,.24);}
.btn--light:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px);}
.btn--block{width:100%;}
.btn--sm{padding:10px 18px;font-size:14px;}

/* ---------- breadcrumb ---------- */
.crumb-bar{background:#fff;border-bottom:1px solid var(--line);}
.breadcrumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:13px;
  color:var(--t3);
  padding:14px 0;
  margin:0;
  list-style:none;
}
.breadcrumb li{display:flex;align-items:center;gap:8px;min-width:0;}
.breadcrumb li+li::before{content:"/";color:#C3CAD6;}
.breadcrumb a{color:var(--t2);}
.breadcrumb a:hover{color:var(--brand-dark);}
.breadcrumb .current{
  color:var(--t1);
  max-width:340px;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}

/* ---------- article head ---------- */
.article-hero{
  background:var(--ink);
  color:rgba(255,255,255,.84);
  padding:56px 0 64px;
  background-image:
    radial-gradient(rgba(255,255,255,.10) 1px, transparent 1px),
    linear-gradient(120deg, rgba(23,195,178,.14), transparent 58%);
  background-size:22px 22px, 100% 100%;
}
.article-head{max-width:860px;}
.article-meta{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:12px;
  margin-bottom:20px;
  font-size:13px;
  color:rgba(255,255,255,.72);
}
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:6px 12px;
  border-radius:var(--r-pill);
  font-size:13px;
  font-weight:600;
  line-height:1;
}
.badge--brand{background:rgba(23,195,178,.16);color:#5DE4D6;border:1px solid rgba(23,195,178,.35);}
.badge--amber{background:rgba(242,163,60,.16);color:#F7BE72;border:1px solid rgba(242,163,60,.35);}
.badge--violet{background:rgba(122,107,224,.18);color:#B4A9F2;border:1px solid rgba(122,107,224,.35);}
.badge--light{background:var(--soft);color:var(--t2);border:1px solid var(--line);}
.article-head h1{
  color:#fff;
  font-size:40px;
  line-height:1.28;
  font-weight:700;
  margin:0 0 18px;
}
.article-sub{
  color:rgba(255,255,255,.74);
  font-size:16px;
  margin:0;
  max-width:720px;
}

/* ---------- article body layout ---------- */
.article-main{padding:56px 0 80px;}
.article-body{
  max-width:820px;
  font-size:17.5px;
  line-height:1.85;
  color:var(--t1);
}
.article-body h2{
  font-size:27px;
  margin:44px 0 18px;
  padding-left:14px;
  border-left:4px solid var(--brand);
  line-height:1.35;
}
.article-body h3{font-size:21px;margin:32px 0 14px;line-height:1.4;}
.article-body h4{font-size:18px;margin:26px 0 12px;}
.article-body p{margin:0 0 1.3em;color:#26313F;}
.article-body ul,.article-body ol{margin:0 0 1.4em;padding-left:1.4em;}
.article-body li{margin-bottom:.55em;}
.article-body li::marker{color:var(--brand-dark);}
.article-body blockquote{
  margin:26px 0;
  padding:18px 22px;
  background:var(--soft);
  border-left:3px solid var(--brand);
  border-radius:0 var(--r-md) var(--r-md) 0;
  color:var(--t2);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{
  border-radius:var(--r-md);
  margin:26px auto;
  box-shadow:var(--sh-1);
}
.article-body a{color:var(--brand-dark);border-bottom:1px solid rgba(14,158,144,.35);}
.article-body a:hover{color:var(--brand);border-bottom-color:var(--brand);text-decoration:none;}
.article-body table{
  width:100%;
  border-collapse:collapse;
  margin:26px 0;
  font-size:15.5px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-md);
  overflow:hidden;
}
.article-body thead th{background:var(--soft);color:var(--t1);font-weight:600;}
.article-body th,.article-body td{
  padding:13px 16px;
  text-align:left;
  border-bottom:1px solid var(--line);
  vertical-align:top;
}
.article-body tbody tr:last-child td{border-bottom:none;}
.article-body tbody tr:hover{background:rgba(23,195,178,.06);}
.article-body pre{
  background:var(--ink);
  color:#D9E2F0;
  border-radius:var(--r-md);
  padding:18px 20px;
  overflow:auto;
  font-size:14px;
  line-height:1.7;
  margin:24px 0;
}
.article-body code{font-family:ui-monospace, Menlo, Consolas, monospace;font-size:.92em;}
.article-body hr{border:none;border-top:1px solid var(--line);margin:36px 0;}

/* empty state */
.empty-state{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:48px 32px;
  text-align:center;
  box-shadow:var(--sh-1);
}
.empty-state .dots{
  width:64px;height:64px;margin:0 auto 20px;border-radius:50%;
  background:radial-gradient(rgba(23,195,178,.5) 1.5px, transparent 1.6px) 0 0/12px 12px, var(--soft);
  border:1px solid var(--line);
}
.empty-state h2{font-size:22px;margin-bottom:10px;}
.empty-state p{color:var(--t2);margin-bottom:22px;}

/* ---------- sidebar ---------- */
.side-col{position:relative;}
.sidebar{
  position:sticky;
  top:96px;
  display:flex;
  flex-direction:column;
  gap:20px;
}
.side-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:24px;
  box-shadow:var(--sh-1);
}
.side-card h3{
  font-size:16px;
  margin:0 0 16px;
  display:flex;
  align-items:center;
  gap:8px;
}
.side-card h3 i{color:var(--brand-dark);font-size:14px;}
.side-list{list-style:none;margin:0;padding:0;}
.side-list li{padding:11px 0;border-bottom:1px dashed var(--line);font-size:14.5px;}
.side-list li:last-child{border-bottom:none;padding-bottom:0;}
.side-list a{color:var(--t1);display:flex;gap:10px;align-items:flex-start;}
.side-list a:hover{color:var(--brand-dark);text-decoration:none;}
.side-list i{color:var(--brand-dark);font-size:12px;margin-top:6px;flex-shrink:0;}
.side-list span{color:var(--t3);font-size:12.5px;display:block;}
.side-facts{list-style:none;margin:0;padding:0;font-size:14px;}
.side-facts li{display:flex;justify-content:space-between;gap:12px;padding:10px 0;border-bottom:1px solid var(--line);color:var(--t2);}
.side-facts li:last-child{border-bottom:none;}
.side-facts b{color:var(--t1);font-weight:600;}
.side-cta{
  background:var(--ink);
  color:rgba(255,255,255,.82);
  border:1px solid rgba(255,255,255,.10);
  background-image:radial-gradient(rgba(255,255,255,.10) 1px, transparent 1px);
  background-size:20px 20px;
}
.side-cta h3{color:#fff;}
.side-cta p{font-size:14px;color:rgba(255,255,255,.7);margin-bottom:16px;}
.side-thumb{border-radius:var(--r-md);overflow:hidden;border:1px solid var(--line);margin-bottom:16px;}

/* ---------- article footer blocks ---------- */
.after-article{margin-top:48px;padding-top:32px;border-top:1px solid var(--line);max-width:820px;}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px;}
.tag{
  display:inline-block;
  padding:6px 14px;
  font-size:13px;
  border-radius:var(--r-pill);
  background:var(--soft);
  color:var(--t2);
  border:1px solid var(--line);
  transition:all .2s ease;
}
.tag:hover{border-color:rgba(23,195,178,.5);color:var(--brand-dark);text-decoration:none;}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:20px;}
.related-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:border-color .25s ease, transform .25s ease, box-shadow .25s ease;
}
.related-card:hover{border-color:rgba(23,195,178,.5);transform:translateY(-2px);box-shadow:var(--sh-2);}
.related-card:hover .related-card__img img{transform:scale(1.03);}
.related-card__img{aspect-ratio:16/10;overflow:hidden;background:var(--soft);}
.related-card__img img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.related-card__body{padding:18px 20px 22px;}
.related-card__body h4{font-size:16px;line-height:1.5;margin:10px 0 8px;}
.related-card__body h4 a{color:var(--t1);}
.related-card__body h4 a:hover{color:var(--brand-dark);text-decoration:none;}
.related-card__body p{font-size:14px;color:var(--t2);margin:0;}

/* ---------- FAQ ---------- */
.faq-list{max-width:820px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;
  background:transparent;
  border:none;
  padding:20px 0;
  display:flex;
  align-items:center;
  gap:14px;
  cursor:pointer;
  text-align:left;
  font-size:16.5px;
  font-weight:600;
  color:var(--t1);
  transition:color .2s ease;
}
.faq-q:hover{color:var(--brand-dark);}
.faq-q .num{
  flex-shrink:0;
  width:26px;height:26px;
  border-radius:8px;
  background:rgba(23,195,178,.14);
  color:var(--brand-dark);
  font-size:13px;
  font-weight:700;
  display:inline-flex;
  align-items:center;
  justify-content:center;
}
.faq-q .sign{margin-left:auto;color:var(--t3);transition:transform .25s ease,color .25s ease;font-size:14px;}
.faq-item.is-open .faq-q .sign{transform:rotate(45deg);color:var(--brand-dark);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-a p{padding:0 0 22px 40px;margin:0;color:var(--t2);font-size:15.5px;line-height:1.85;}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--ink);
  color:rgba(255,255,255,.82);
  padding:72px 0;
  background-image:radial-gradient(rgba(255,255,255,.10) 1px, transparent 1px);
  background-size:22px 22px;
}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap;}
.cta-inner h2{color:#fff;font-size:30px;margin-bottom:10px;}
.cta-inner p{color:rgba(255,255,255,.72);margin:0;max-width:640px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- footer ---------- */
.site-footer{
  background:var(--ink);
  color:rgba(255,255,255,.68);
  padding:64px 0 0;
  background-image:radial-gradient(rgba(255,255,255,.07) 1px, transparent 1px);
  background-size:24px 24px;
  font-size:14px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.2fr 1fr 1fr 1.4fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand .logo__text{color:#fff;}
.footer-brand .logo__text b{color:var(--brand);}
.footer-brand p{color:rgba(255,255,255,.62);font-size:14px;line-height:1.8;margin:0 0 18px;}
.footer-contact{list-style:none;margin:0;padding:0;}
.footer-contact li{display:flex;gap:10px;align-items:flex-start;margin-bottom:10px;color:rgba(255,255,255,.62);}
.footer-contact i{color:var(--brand);margin-top:5px;font-size:13px;}
.site-footer h4{color:#fff;font-size:14px;font-weight:600;margin:0 0 18px;letter-spacing:.3px;}
.footer-links{list-style:none;margin:0;padding:0;}
.footer-links li{margin-bottom:11px;}
.footer-links a{color:rgba(255,255,255,.68);font-size:14px;}
.footer-links a:hover{color:#fff;text-decoration:underline;text-decoration-color:var(--brand);text-underline-offset:3px;}
.footer-sub p{color:rgba(255,255,255,.62);font-size:14px;margin:0 0 14px;}
.footer-form label{display:block;font-size:13px;color:rgba(255,255,255,.72);margin-bottom:8px;}
.footer-form input{
  width:100%;
  height:46px;
  border-radius:var(--r-sm);
  border:1px solid rgba(255,255,255,.16);
  background:rgba(255,255,255,.05);
  color:#fff;
  padding:0 14px;
  font-size:14px;
  margin-bottom:12px;
  transition:border-color .2s ease, box-shadow .2s ease;
}
.footer-form input::placeholder{color:rgba(255,255,255,.4);}
.footer-form input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(23,195,178,.18);}
.footer-form .hint{font-size:12.5px;color:rgba(255,255,255,.5);margin:10px 0 0;}
.footer-bottom{
  border-top:1px solid var(--line-dark);
  padding:20px 0;
  display:flex;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:rgba(255,255,255,.5);
}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  .nav-toggle{display:inline-flex;}
  .site-nav{
    position:absolute;
    top:100%;left:0;right:0;
    background:#fff;
    border-bottom:1px solid var(--line);
    box-shadow:0 18px 40px rgba(12,20,36,.10);
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:8px 12px 16px;
    display:none;
  }
  .site-nav.is-open{display:flex;}
  .site-nav a{padding:14px 12px;font-size:15px;border-bottom:1px solid var(--line);}
  .site-nav a::after{display:none;}
  .site-nav a.is-active{color:var(--brand-dark);}
  .nav-wrap{position:relative;flex-wrap:wrap;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .article-head h1{font-size:32px;}
  .sidebar{position:static;}
  .related-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:639px){
  .container{padding:0 20px;}
  .section{padding:56px 0;}
  .topbar__note{display:none;}
  .topbar__inner{justify-content:flex-end;}
  .logo__text{font-size:17px;}
  .nav-actions .btn{display:none;}
  .article-hero{padding:40px 0 48px;}
  .article-head h1{font-size:26px;}
  .article-body{font-size:16.5px;line-height:1.8;}
  .article-body h2{font-size:22px;}
  .article-body h3{font-size:19px;}
  .article-body table{font-size:14px;}
  .related-grid{grid-template-columns:1fr;}
  .cta-inner h2{font-size:24px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .breadcrumb .current{max-width:180px;}
}

/* roulang page: category1 */
:root{
  --ink:#0C1424;
  --ink-2:#111C31;
  --brand:#17C3B2;
  --brand-dark:#0E9E90;
  --brand-hover:#0FA79A;
  --amber:#F2A33C;
  --violet:#7A6BE0;
  --text:#1A2233;
  --text-2:#5A6478;
  --text-3:#8A93A6;
  --bg:#F5F7FA;
  --card:#FFFFFF;
  --soft:#EEF1F6;
  --line:#E4E8EF;
  --line-dark:rgba(255,255,255,.10);
  --r-lg:16px;
  --r-md:12px;
  --r-sm:10px;
  --shadow-sm:0 1px 2px rgba(12,20,36,.04),0 10px 30px rgba(12,20,36,.06);
  --shadow-md:0 4px 10px rgba(12,20,36,.06),0 18px 40px rgba(12,20,36,.10);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand-dark);text-decoration:none;transition:color .2s ease,border-color .2s ease;}
a:hover{color:var(--brand-dark);text-decoration:underline;text-underline-offset:3px;}
a.link-more{text-decoration:none;}
a.link-more:hover{text-decoration:underline;}
ul,ol{margin:0;padding:0;list-style:none;}
p{margin:0 0 1.1em;}
h1,h2,h3,h4{margin:0;color:var(--text);font-weight:700;letter-spacing:0;line-height:1.3;}
h1{font-size:46px;line-height:1.25;}
h2{font-size:34px;}
h3{font-size:22px;font-weight:600;line-height:1.4;}
h4{font-size:16px;}
figure{margin:0;}
button,input{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
.foundation-button,[type=submit],[type=text]{-webkit-appearance:none;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--ink);color:rgba(255,255,255,.72);font-size:13px;line-height:1.6;}
.topbar__inner{display:flex;align-items:center;justify-content:space-between;min-height:38px;gap:16px;}
.topbar__note{display:inline-flex;align-items:center;gap:8px;}
.topbar__note i{color:var(--brand);}
.topbar__links{display:inline-flex;align-items:center;gap:18px;}
.topbar__links a{color:rgba(255,255,255,.78);text-decoration:none;}
.topbar__links a:hover{color:#fff;text-decoration:underline;}

/* ---------- 主导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 24px rgba(12,20,36,.08);}
.nav-wrap{position:relative;display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:70px;}
.logo{display:inline-flex;align-items:center;gap:11px;color:var(--text);text-decoration:none;}
.logo:hover{text-decoration:none;color:var(--text);}
.logo__mark{position:relative;flex:0 0 auto;width:26px;height:26px;border-radius:50%;border:1.5px solid var(--brand);}
.logo__mark::before{content:"";position:absolute;inset:6px;border-radius:50%;background:var(--brand);opacity:.9;}
.logo__mark::after{content:"";position:absolute;left:50%;top:50%;width:36px;height:36px;margin:-18px 0 0 -18px;border-radius:50%;border:1px dashed rgba(23,195,178,.45);}
.logo__text{font-size:19px;font-weight:700;letter-spacing:.2px;}
.logo__text b{color:var(--brand-dark);font-weight:700;}
.site-nav{display:flex;align-items:center;gap:4px;}
.site-nav a{
  position:relative;
  display:inline-flex;align-items:center;
  padding:10px 13px;border-radius:var(--r-sm);
  font-size:15px;color:var(--text-2);font-weight:500;
  text-decoration:none;transition:color .2s ease,background-color .2s ease;
}
.site-nav a:hover{color:var(--text);background:var(--soft);text-decoration:none;}
.site-nav a.is-active{color:var(--brand-dark);font-weight:600;}
.site-nav a.is-active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:2px;height:2px;border-radius:2px;background:var(--brand);
}
.nav-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:var(--r-sm);
  border:1px solid var(--line);background:#fff;color:var(--text);cursor:pointer;
  transition:border-color .2s ease,color .2s ease;
}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand-dark);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--r-md);
  font-size:15px;font-weight:600;line-height:1.2;
  border:1px solid transparent;background:transparent;color:var(--text);
  cursor:pointer;text-decoration:none;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn:hover{text-decoration:none;}
.btn--primary{background:var(--brand);color:var(--ink);}
.btn--primary:hover{background:var(--brand-hover);color:var(--ink);transform:translateY(-1px);box-shadow:var(--shadow-md);}
.btn--primary:active{transform:translateY(0);box-shadow:var(--shadow-sm);}
.btn--ghost{border-color:#D8DEE9;color:var(--text);}
.btn--ghost:hover{border-color:var(--brand);color:var(--brand-dark);}
.btn--onDark{border-color:rgba(255,255,255,.24);color:#fff;}
.btn--onDark:hover{border-color:var(--brand);color:var(--brand);}
.btn--block{width:100%;}
.btn--sm{padding:10px 18px;font-size:14px;border-radius:10px;}

/* ---------- 页头 Hero ---------- */
.page-hero{position:relative;background:var(--ink);color:#fff;overflow:hidden;}
.page-hero__bg{
  position:absolute;inset:0;
  background:url(/assets/images/backpic/back-1.webp) center/cover no-repeat;
  opacity:.30;
}
.page-hero__veil{
  position:absolute;inset:0;
  background-image:
    radial-gradient(rgba(255,255,255,.16) 1px,transparent 1px),
    linear-gradient(180deg,rgba(12,20,36,.42) 0%,rgba(12,20,36,.92) 100%);
  background-size:24px 24px,100% 100%;
  opacity:.9;
}
.page-hero__inner{position:relative;z-index:2;padding:36px 24px 76px;}
.crumbs{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:rgba(255,255,255,.62);margin-bottom:26px;}
.crumbs a{color:rgba(255,255,255,.78);text-decoration:none;}
.crumbs a:hover{color:#fff;text-decoration:underline;}
.crumbs__cur{color:rgba(255,255,255,.55);}
.page-hero h1{color:#fff;margin-bottom:18px;}
.page-hero__lead{font-size:17px;line-height:1.85;color:rgba(255,255,255,.78);max-width:640px;margin-bottom:28px;}
.page-hero__actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px;}
.hero-metrics{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;border-top:1px solid var(--line-dark);padding-top:24px;max-width:560px;}
.hero-metrics li{min-width:0;}
.hero-metrics strong{display:block;font-size:24px;color:var(--brand);font-weight:700;line-height:1.3;}
.hero-metrics span{display:block;font-size:13px;color:rgba(255,255,255,.6);}
.hero-shot{
  border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--line-dark);
  box-shadow:0 20px 50px rgba(0,0,0,.35);
}
.hero-shot img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/10;background:#16233c;}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0;}
.section--soft{background:var(--soft);}
.section--white{background:#fff;}
.section-head{max-width:720px;margin-bottom:44px;}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--brand-dark);
  letter-spacing:.06em;text-transform:uppercase;margin-bottom:12px;
}
.section-head h2{margin-bottom:14px;}
.section-head p{color:var(--text-2);margin:0;}

/* ---------- 双栏布局 + 锚点目录 ---------- */
.layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:48px;align-items:start;}
.layout__main{min-width:0;}
.toc{
  position:sticky;top:96px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:24px;box-shadow:var(--shadow-sm);
}
.toc__title{font-size:13px;font-weight:600;color:var(--text-3);letter-spacing:.08em;margin:0 0 14px;}
.toc__list{display:flex;flex-direction:column;gap:2px;}
.toc__list a{
  display:flex;align-items:center;gap:10px;
  padding:10px 12px;border-radius:var(--r-sm);
  font-size:14px;color:var(--text-2);text-decoration:none;
  transition:background-color .2s ease,color .2s ease;
}
.toc__list a:hover{background:var(--soft);color:var(--brand-dark);text-decoration:none;}
.toc__list span{
  flex:0 0 auto;font-size:12px;font-weight:700;color:var(--brand-dark);
  background:rgba(23,195,178,.12);border-radius:6px;padding:1px 6px;
}
.toc__foot{border-top:1px solid var(--line);margin-top:18px;padding-top:18px;}
.toc__foot p{font-size:13px;color:var(--text-2);margin:0 0 10px;}

/* ---------- 图文区块 ---------- */
.topic{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:30px;box-shadow:var(--shadow-sm);
  margin-bottom:28px;
  transition:border-color .25s ease,transform .25s ease,box-shadow .25s ease;
  scroll-margin-top:96px;
}
.topic:hover{border-color:rgba(23,195,178,.5);transform:translateY(-2px);box-shadow:var(--shadow-md);}
.topic__grid{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:32px;align-items:start;}
.topic:nth-child(even) .topic__grid{grid-template-columns:300px minmax(0,1fr);}
.topic:nth-child(even) .topic__body{order:2;}
.topic:nth-child(even) .topic__media{order:1;}
.topic__media{border-radius:var(--r-md);overflow:hidden;border:1px solid var(--line);background:var(--soft);}
.topic__media img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .4s ease;}
.topic:hover .topic__media img{transform:scale(1.03);}
.topic__num{
  display:inline-block;font-size:12px;font-weight:700;color:var(--brand-dark);
  background:rgba(23,195,178,.12);border-radius:999px;padding:4px 12px;margin-bottom:14px;
}
.topic h2{font-size:26px;margin-bottom:12px;}
.topic p{color:var(--text-2);font-size:15.5px;}
.topic__list{display:flex;flex-direction:column;gap:10px;margin-top:6px;}
.topic__list li{position:relative;padding-left:22px;font-size:15px;color:var(--text-2);line-height:1.75;}
.topic__list li::before{
  content:"";position:absolute;left:0;top:12px;width:10px;height:2px;border-radius:2px;background:var(--brand);
}

/* ---------- 步骤 ---------- */
.steps-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:34px;box-shadow:var(--shadow-sm);
}
.steps-card h2{font-size:28px;margin-bottom:10px;}
.steps-card > p{color:var(--text-2);max-width:640px;}
.steps{display:flex;flex-direction:column;gap:0;margin-top:24px;}
.step{display:grid;grid-template-columns:56px minmax(0,1fr);gap:20px;padding:22px 0;border-top:1px solid var(--line);}
.step:first-child{border-top:0;padding-top:6px;}
.step__idx{
  width:44px;height:44px;border-radius:12px;background:var(--ink);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:16px;
}
.step h3{font-size:19px;margin-bottom:8px;}
.step p{color:var(--text-2);font-size:15px;margin:0;}

/* ---------- 相关分类 ---------- */
.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px;}
.rel-card{
  display:flex;flex-direction:column;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--shadow-sm);text-decoration:none;color:inherit;
  transition:border-color .25s ease,transform .25s ease,box-shadow .25s ease;
}
.rel-card:hover{border-color:rgba(23,195,178,.5);transform:translateY(-2px);box-shadow:var(--shadow-md);text-decoration:none;color:inherit;}
.rel-card__media{overflow:hidden;background:var(--soft);}
.rel-card__media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .4s ease;}
.rel-card:hover .rel-card__media img{transform:scale(1.03);}
.rel-card__body{padding:22px 24px 24px;}
.badge{
  display:inline-block;font-size:13px;line-height:1;border-radius:999px;padding:6px 12px;font-weight:600;
  background:rgba(23,195,178,.12);color:var(--brand-dark);
}
.badge--amber{background:rgba(242,163,60,.16);color:#B8730F;}
.badge--violet{background:rgba(122,107,224,.14);color:#5B4BCB;}
.rel-card h3{font-size:19px;margin:14px 0 10px;}
.rel-card p{font-size:14.5px;color:var(--text-2);margin:0 0 16px;}
.rel-card .link-more{font-size:14px;font-weight:600;color:var(--brand-dark);}
.link-more i{font-size:12px;margin-left:4px;transition:transform .2s ease;display:inline-block;}
.link-more:hover i{transform:translateX(3px);}

/* ---------- 底部 CTA ---------- */
.cta-band{position:relative;background:var(--ink);color:#fff;overflow:hidden;scroll-margin-top:96px;}
.cta-band__dots{
  position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.16) 1px,transparent 1px);
  background-size:22px 22px;opacity:.35;
}
.cta-band__inner{position:relative;z-index:2;padding:80px 24px;text-align:center;}
.cta-band h2{color:#fff;margin-bottom:14px;}
.cta-band p{color:rgba(255,255,255,.72);max-width:620px;margin:0 auto 28px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.68);font-size:14px;padding:72px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.2fr 1fr 1fr 1.4fr;gap:40px;padding-bottom:48px;}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand .logo__text{color:#fff;}
.footer-brand .logo__text b{color:var(--brand);}
.site-footer h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px;}
.site-footer p{color:rgba(255,255,255,.62);line-height:1.8;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{color:rgba(255,255,255,.68);text-decoration:none;font-size:14px;}
.footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.footer-contact{display:flex;flex-direction:column;gap:10px;margin-top:14px;}
.footer-contact li{display:flex;align-items:flex-start;gap:10px;font-size:13.5px;color:rgba(255,255,255,.62);}
.footer-contact i{color:var(--brand);margin-top:4px;}
.footer-form{display:flex;flex-direction:column;gap:8px;margin-top:8px;}
.footer-form label{font-size:13px;color:rgba(255,255,255,.62);}
.footer-form input{
  height:46px;border-radius:var(--r-sm);border:1px solid rgba(255,255,255,.18);
  background:rgba(255,255,255,.06);color:#fff;padding:0 14px;font-size:14px;
  transition:border-color .2s ease;
}
.footer-form input::placeholder{color:rgba(255,255,255,.4);}
.footer-form input:focus{outline:none;border-color:var(--brand);}
.footer-form .hint{font-size:12.5px;color:rgba(255,255,255,.44);margin:2px 0 0;}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  border-top:1px solid var(--line-dark);padding:22px 0 28px;font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  :root{--container:1140px;}
  .layout{grid-template-columns:minmax(0,1fr) 290px;gap:36px;}
}
@media (max-width:1023px){
  h1{font-size:36px;}
  h2{font-size:28px;}
  .section{padding:72px 0;}
  .site-nav{
    display:none;position:absolute;top:100%;left:-24px;right:-24px;
    flex-direction:column;align-items:stretch;gap:0;
    background:#fff;border-bottom:1px solid var(--line);
    box-shadow:0 18px 40px rgba(12,20,36,.12);
    padding:8px 16px 18px;
  }
  .site-nav.is-open{display:flex;}
  .site-nav a{min-height:52px;padding:0 14px;font-size:15.5px;}
  .site-nav a.is-active::after{display:none;}
  .nav-toggle{display:inline-flex;}
  .layout{grid-template-columns:minmax(0,1fr);gap:28px;}
  .layout__side{order:-1;}
  .toc{position:static;padding:18px;}
  .toc__list{flex-direction:row;overflow-x:auto;gap:8px;padding-bottom:4px;}
  .toc__list li{flex:0 0 auto;}
  .toc__list a{background:var(--soft);white-space:nowrap;}
  .toc__foot{display:none;}
  .topic__grid,.topic:nth-child(even) .topic__grid{grid-template-columns:minmax(0,1fr);}
  .topic:nth-child(even) .topic__body{order:1;}
  .topic:nth-child(even) .topic__media{order:2;}
  .topic__media img{aspect-ratio:16/9;}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:36px;}
  .hero-metrics{grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;}
}
@media (max-width:767px){
  .page-hero__inner{padding:28px 20px 56px;}
  .hero-shot{margin-top:32px;}
  .section{padding:56px 0;}
  .topic{padding:24px;}
  .steps-card{padding:26px 22px;}
  .rel-grid{grid-template-columns:minmax(0,1fr);}
}
@media (max-width:639px){
  h1{font-size:31px;}
  h2{font-size:24px;}
  h3{font-size:19px;}
  .container{padding:0 20px;}
  .topbar__note{display:none;}
  .topbar__inner{justify-content:flex-end;}
  .nav-wrap{min-height:64px;gap:12px;}
  .logo__text{font-size:17px;}
  .hero-metrics{grid-template-columns:minmax(0,1fr);gap:12px;padding-top:18px;}
  .hero-metrics li + li{border-top:1px solid var(--line-dark);padding-top:12px;}
  .page-hero__actions .btn{width:100%;}
  .step{grid-template-columns:44px minmax(0,1fr);gap:14px;}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:30px;}
  .cta-band__inner{padding:64px 20px;}
  .cta-actions .btn{width:100%;}
}

/* roulang page: category2 */
:root{
  --deep:#0C1424;
  --deep-2:#121C31;
  --brand:#17C3B2;
  --brand-dark:#0E9E90;
  --brand-hover:#0FA79A;
  --amber:#F2A33C;
  --purple:#7A6BE0;
  --text:#1A2233;
  --text-2:#5A6478;
  --text-3:#8A93A6;
  --bg:#F5F7FA;
  --surface:#FFFFFF;
  --surface-alt:#EEF1F6;
  --line:#E4E8EF;
  --line-dark:rgba(255,255,255,.10);
  --r-lg:16px;
  --r-md:12px;
  --r-sm:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(12,20,36,.04), 0 10px 30px rgba(12,20,36,.06);
  --sh-2:0 4px 10px rgba(12,20,36,.06), 0 18px 40px rgba(12,20,36,.10);
  --container:1200px;
  --sp:96px;
}
*,*::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:-apple-system,BlinkMacSystemFont,"PingFang SC","Noto Sans SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-size:16px;
  font-weight:400;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5,h6,p,ul,ol,dl,dd{margin:0;padding:0}
ul,ol{list-style:none}
img{display:block;max-width:100%;height:auto}
a{color:var(--brand-dark);text-decoration:none;transition:color .2s ease,text-decoration-color .2s ease}
a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
button{font:inherit;cursor:pointer}
input{font:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
::selection{background:rgba(23,195,178,.22)}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
@media (min-width:1280px){.container{max-width:1280px;padding:0 32px}}
@media (max-width:639px){.container{padding:0 20px}}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 24px rgba(12,20,36,.08)}
.nav-wrap{position:relative;display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:72px}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--text)}
.logo:hover{color:var(--text);text-decoration:none}
.logo__mark{
  position:relative;flex:0 0 24px;width:24px;height:24px;border-radius:50%;
  background:var(--deep);border:1px solid rgba(23,195,178,.55);
}
.logo__mark::before{content:"";position:absolute;inset:6px;border-radius:50%;background:var(--brand)}
.logo__mark::after{
  content:"";position:absolute;left:50%;top:50%;width:26px;height:10px;
  border:1px solid rgba(242,163,60,.75);border-radius:50%;
  transform:translate(-50%,-50%) rotate(-24deg);
}
.logo__text{font-size:18px;font-weight:700;letter-spacing:.2px;line-height:1}
.logo__text b{color:var(--brand-dark);font-weight:700}

.site-nav{display:flex;align-items:center;gap:26px}
.site-nav a{position:relative;font-size:15px;color:var(--text-2);padding:6px 0;white-space:nowrap}
.site-nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;border-radius:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform .2s ease;
}
.site-nav a:hover{color:var(--text);text-decoration:none}
.site-nav a:hover::after{transform:scaleX(1)}
.site-nav a.is-active{color:var(--text);font-weight:600}
.site-nav a.is-active::after{transform:scaleX(1)}

.nav-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:var(--r-md);
  border:1px solid var(--line);background:#fff;color:var(--text);
  font-size:17px;transition:border-color .2s ease,color .2s ease;
}
.nav-toggle:hover{border-color:rgba(23,195,178,.6);color:var(--brand-dark)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--r-md);border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1;text-align:center;
  transition:background-color .2s ease,border-color .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn:hover{text-decoration:none}
.btn--primary{background:var(--brand);color:var(--deep)}
.btn--primary:hover{background:var(--brand-hover);color:var(--deep);transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn--primary:active{transform:translateY(0);box-shadow:none}
.btn--ghost{background:transparent;border-color:rgba(255,255,255,.28);color:#fff}
.btn--ghost:hover{background:rgba(255,255,255,.06);border-color:var(--brand);color:var(--brand)}
.btn--outline{background:transparent;border-color:#D8DEE9;color:var(--text)}
.btn--outline:hover{border-color:var(--brand);color:var(--brand-dark);background:#fff}
.btn--sm{padding:11px 20px;font-size:14px}
.btn--block{width:100%}

/* ============ 页面头部 ============ */
.page-hero{
  position:relative;overflow:hidden;color:#fff;
  background:var(--deep) url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  padding:68px 0 80px;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(12,20,36,.90) 0%,rgba(12,20,36,.96) 100%);
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.08;
  background-image:radial-gradient(rgba(255,255,255,.9) 1px,transparent 1px);
  background-size:26px 26px;
}
.page-hero .container{position:relative;z-index:2}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:rgba(255,255,255,.6);margin-bottom:26px}
.breadcrumb a{color:rgba(255,255,255,.72)}
.breadcrumb a:hover{color:var(--brand);text-decoration:none}
.breadcrumb .sep{opacity:.5}
.breadcrumb .current{color:#fff;font-weight:500}
.page-hero__badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  background:rgba(23,195,178,.14);border:1px solid rgba(23,195,178,.38);
  color:var(--brand);font-size:13px;font-weight:600;letter-spacing:.4px;
}
.page-hero h1{
  color:#fff;font-size:46px;font-weight:700;line-height:1.25;
  margin:18px 0 20px;max-width:900px;
}
.page-hero__lead{
  max-width:820px;font-size:17px;line-height:1.9;color:rgba(255,255,255,.78);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}

/* ============ 通用板块 ============ */
.section{position:relative;padding:var(--sp) 0;background:#fff}
.section--tint{background:var(--bg)}
.section--deep{
  background:var(--deep);color:#fff;overflow:hidden;
}
.section--deep::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.08;
  background-image:radial-gradient(rgba(255,255,255,.9) 1px,transparent 1px);
  background-size:24px 24px;
}
.section--deep .container{position:relative;z-index:2}
.section-head{max-width:800px;margin-bottom:44px}
.section-head--center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:600;letter-spacing:1.2px;
  color:var(--brand-dark);margin-bottom:14px;
}
.section--deep .eyebrow{color:var(--brand)}
.section-head h2{font-size:34px;font-weight:700;line-height:1.3;margin-bottom:18px}
.section--deep .section-head h2{color:#fff}
.section-head p{font-size:16px;line-height:1.85;color:var(--text-2)}
.section--deep .section-head p{color:rgba(255,255,255,.74)}

/* ============ 定义式双列列表 ============ */
.def-list{margin-top:-12px}
.def-item{
  height:100%;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:24px 26px;transition:border-color .25s ease,transform .25s ease,box-shadow .25s ease;
}
.def-item:hover{border-color:rgba(23,195,178,.5);transform:translateY(-2px);box-shadow:var(--sh-2)}
.def-item__term{display:flex;align-items:center;gap:12px;font-size:18px;font-weight:600;line-height:1.4;margin-bottom:10px}
.def-item__idx{
  flex:0 0 auto;display:inline-flex;align-items:center;justify-content:center;
  width:30px;height:30px;border-radius:8px;
  background:rgba(23,195,178,.12);color:var(--brand-dark);
  font-size:13px;font-weight:700;letter-spacing:.3px;
}
.def-item__desc{font-size:15px;line-height:1.8;color:var(--text-2)}

/* ============ 数据横条 ============ */
.stat-bar{
  display:grid;grid-template-columns:repeat(4,1fr);
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);overflow:hidden;
}
.stat{padding:30px 26px;border-right:1px solid var(--line)}
.stat:last-child{border-right:none}
.stat__num{font-size:34px;font-weight:700;line-height:1.1;color:var(--deep)}
.stat__num span{font-size:17px;font-weight:600;color:var(--brand-dark);margin-left:4px}
.stat__label{font-size:14px;color:var(--text-3);margin-top:8px;line-height:1.6}
.stat-note{margin-top:20px;font-size:14px;color:var(--text-3);line-height:1.8}

/* ============ 图文区 ============ */
.split-media{border-radius:var(--r-md);overflow:hidden;box-shadow:var(--sh-1);background:var(--surface-alt)}
.split-media img{width:100%;border-radius:var(--r-md);transition:transform .4s ease}
.split-media:hover img{transform:scale(1.03)}
.steps{margin-top:26px}
.step{display:flex;gap:16px;padding:18px 0;border-bottom:1px dashed var(--line)}
.step:last-child{border-bottom:none;padding-bottom:0}
.step__num{
  flex:0 0 auto;width:32px;height:32px;border-radius:9px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--deep);color:var(--brand);font-size:14px;font-weight:700;
}
.step__title{font-size:17px;font-weight:600;line-height:1.5;margin-bottom:6px}
.step__desc{font-size:15px;line-height:1.8;color:var(--text-2)}

/* ============ 卡片 ============ */
.card{
  height:100%;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:28px;transition:border-color .25s ease,transform .25s ease,box-shadow .25s ease;
}
.card:hover{border-color:rgba(23,195,178,.5);transform:translateY(-2px);box-shadow:var(--sh-2)}
.card__icon{
  width:44px;height:44px;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;
  background:rgba(23,195,178,.12);color:var(--brand-dark);font-size:18px;margin-bottom:18px;
}
.card__icon--amber{background:rgba(242,163,60,.14);color:#C97D18}
.card__icon--purple{background:rgba(122,107,224,.14);color:#5A4CCA}
.card h3{font-size:20px;font-weight:600;line-height:1.4;margin-bottom:10px}
.card p{font-size:15px;line-height:1.8;color:var(--text-2)}
.tag{
  display:inline-flex;align-items:center;padding:5px 12px;border-radius:var(--r-pill);
  font-size:13px;font-weight:600;line-height:1.4;
}
.tag--brand{background:rgba(23,195,178,.12);color:var(--brand-dark)}
.tag--amber{background:rgba(242,163,60,.16);color:#B7710F}
.tag--purple{background:rgba(122,107,224,.14);color:#5A4CCA}

/* ============ 手风琴 ============ */
.accordion{
  border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;
  background:#fff;box-shadow:var(--sh-1);
}
.accordion .accordion-item{border-bottom:1px solid var(--line);background:#fff}
.accordion .accordion-item:last-child{border-bottom:none}
.accordion .accordion-title{
  position:relative;display:flex;align-items:center;gap:14px;
  padding:20px 60px 20px 24px;font-size:16px;font-weight:600;line-height:1.6;
  color:var(--text);background:#fff;border:none;
}
.accordion .accordion-title:hover{background:#F8FAFC;color:var(--brand-dark);text-decoration:none}
.accordion .accordion-title::before{
  content:"";position:absolute;right:26px;top:50%;width:12px;height:2px;border-radius:2px;
  background:var(--brand-dark);transform:translateY(-50%);
}
.accordion .accordion-title::after{
  content:"";position:absolute;right:31px;top:50%;width:2px;height:12px;border-radius:2px;
  background:var(--brand-dark);transform:translateY(-50%);transition:opacity .2s ease;
}
.accordion .accordion-item.is-active .accordion-title{color:var(--brand-dark)}
.accordion .accordion-item.is-active .accordion-title::after{opacity:0}
.accordion .accordion-content{padding:0 24px 22px;border-top:none}
.accordion .accordion-content p{font-size:15px;line-height:1.85;color:var(--text-2)}
.accordion .accordion-content strong{color:var(--text)}

/* ============ 底部 CTA ============ */
.cta-band{
  position:relative;overflow:hidden;background:var(--deep);color:#fff;padding:84px 0;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(circle at 82% 18%,rgba(23,195,178,.16) 0%,transparent 52%);
}
.cta-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.09;
  background-image:radial-gradient(rgba(255,255,255,.9) 1px,transparent 1px);
  background-size:24px 24px;
}
.cta-band .container{position:relative;z-index:2}
.cta-inner{
  display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap;
}
.cta-inner h2{font-size:32px;color:#fff;line-height:1.32;margin-bottom:14px}
.cta-inner p{max-width:640px;font-size:16px;line-height:1.85;color:rgba(255,255,255,.75)}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;overflow:hidden;background:var(--deep);
  color:rgba(255,255,255,.72);padding:66px 0 0;
}
.site-footer::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.06;
  background-image:radial-gradient(rgba(255,255,255,.9) 1px,transparent 1px);
  background-size:28px 28px;
}
.site-footer .container{position:relative;z-index:2}
.footer-grid{display:grid;grid-template-columns:1.2fr 1fr 1fr 1.4fr;gap:40px}
.site-footer .logo{color:#fff}
.site-footer .logo:hover{color:#fff}
.site-footer .logo__text{color:#fff}
.site-footer .logo__text b{color:var(--brand)}
.site-footer .logo__mark{background:rgba(255,255,255,.06)}
.footer-brand p{margin:18px 0 20px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.68)}
.footer-contact li{display:flex;align-items:flex-start;gap:10px;font-size:14px;line-height:1.7;color:rgba(255,255,255,.68);margin-bottom:9px}
.footer-contact i{color:var(--brand);margin-top:4px;font-size:13px}
.site-footer h4{color:#fff;font-size:14px;font-weight:600;letter-spacing:.6px;margin-bottom:18px}
.footer-links li{margin-bottom:11px}
.footer-links a{color:rgba(255,255,255,.68);font-size:14px}
.footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.footer-sub p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.68);margin-bottom:16px}
.footer-form label{display:block;font-size:13px;color:rgba(255,255,255,.6);margin-bottom:8px}
.footer-form input{
  width:100%;height:46px;border-radius:var(--r-sm);
  border:1px solid rgba(255,255,255,.16);background:rgba(255,255,255,.06);
  color:#fff;padding:0 14px;font-size:14px;margin-bottom:12px;
  transition:border-color .2s ease,background-color .2s ease;
}
.footer-form input::placeholder{color:rgba(255,255,255,.4)}
.footer-form input:focus{outline:none;border-color:var(--brand);background:rgba(255,255,255,.10)}
.footer-form .hint{margin-top:12px;font-size:13px;line-height:1.7;color:rgba(255,255,255,.45)}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  margin-top:52px;padding:22px 0;font-size:13px;color:rgba(255,255,255,.5);
  border-top:1px solid var(--line-dark);
}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  :root{--sp:80px}
  .page-hero h1{font-size:42px}
}
@media (max-width:1023px){
  :root{--sp:72px}
  .nav-toggle{display:inline-flex}
  .site-nav{
    position:absolute;left:0;right:0;top:100%;
    display:none;flex-direction:column;align-items:stretch;gap:0;
    padding:6px 24px 20px;background:#fff;
    border-bottom:1px solid var(--line);box-shadow:var(--sh-1);
  }
  .site-nav.is-open{display:flex}
  .site-nav a{
    display:flex;align-items:center;min-height:52px;padding:0;
    border-bottom:1px solid var(--line);font-size:15px;
  }
  .site-nav a:last-child{border-bottom:none}
  .site-nav a::after{display:none}
  .site-nav a.is-active{color:var(--brand-dark)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .stat-bar{grid-template-columns:repeat(2,1fr)}
  .stat:nth-child(2){border-right:none}
  .stat:nth-child(1),.stat:nth-child(2){border-bottom:1px solid var(--line)}
  .split-media{margin-bottom:32px}
}
@media (max-width:639px){
  :root{--sp:56px}
  .page-hero{padding:44px 0 60px}
  .page-hero h1{font-size:31px;margin:14px 0 16px}
  .page-hero__lead{font-size:15.5px;line-height:1.85}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .section-head h2{font-size:25px}
  .section-head p{font-size:15px}
  .stat-bar{grid-template-columns:1fr}
  .stat{border-right:none;border-bottom:1px solid var(--line)}
  .stat:last-child{border-bottom:none}
  .stat__num{font-size:29px}
  .def-item{padding:20px}
  .card{padding:22px}
  .cta-inner h2{font-size:25px}
  .cta-actions{flex-direction:column;align-items:stretch;width:100%}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .nav-actions .btn--primary{display:none}
}

/* roulang page: category3 */
/* ============ 设计变量 ============ */
:root{
  --ink:#0C1424;
  --ink-2:#101B30;
  --brand:#17C3B2;
  --brand-dark:#0E9E90;
  --brand-hover:#0FA79A;
  --amber:#F2A33C;
  --violet:#7A6BE0;
  --t1:#1A2233;
  --t2:#5A6478;
  --t3:#8A93A6;
  --bg:#F5F7FA;
  --card:#FFFFFF;
  --soft:#EEF1F6;
  --line:#E4E8EF;
  --line-strong:#D8DEE9;
  --line-dark:rgba(255,255,255,.10);
  --r-lg:16px;
  --r-md:12px;
  --r-sm:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(12,20,36,.04),0 10px 30px rgba(12,20,36,.06);
  --sh-2:0 4px 10px rgba(12,20,36,.06),0 18px 40px rgba(12,20,36,.10);
  --sec:96px;
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Noto Sans SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
}

/* ============ 基础 reset ============ */
*,*::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(--t1);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;border:0;}
a{color:var(--brand-dark);text-decoration:none;transition:color .2s ease,border-color .2s ease;}
a:hover{color:var(--brand-hover);}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{
  outline:2px solid var(--brand);
  outline-offset:2px;
  border-radius:6px;
}
h1,h2,h3,h4{margin:0;color:var(--t1);font-weight:700;letter-spacing:0;}
h1{font-size:48px;line-height:1.25;}
h2{font-size:34px;line-height:1.3;}
h3{font-size:23px;line-height:1.4;font-weight:600;}
h4{font-size:17px;line-height:1.5;font-weight:600;}
p{margin:0 0 1.1em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;border:0;background:none;}
input{font-family:inherit;}
::selection{background:rgba(23,195,178,.24);}

/* ============ 容器 ============ */
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
.section{padding:var(--sec) 0;}
.section--soft{background:var(--soft);}
.section--white{background:#fff;}
.section--dark{
  position:relative;
  background:var(--ink);
  color:rgba(255,255,255,.78);
  overflow:hidden;
}
.section--dark::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:radial-gradient(rgba(255,255,255,.10) 1px,transparent 1px);
  background-size:26px 26px;
  opacity:.9;
  pointer-events:none;
}
.section--dark > .container{position:relative;z-index:1;}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head h2{margin-bottom:14px;}
.section-head p{color:var(--t2);font-size:16px;}
.section--dark .section-head h2{color:#fff;}
.section--dark .section-head p{color:rgba(255,255,255,.70);}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:600;
  letter-spacing:.06em;
  color:var(--brand-dark);
  margin-bottom:14px;
}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--brand);border-radius:2px;}
.section--dark .eyebrow{color:var(--brand);}

/* ============ 顶部信息条 ============ */
.topbar{
  background:var(--ink);
  color:rgba(255,255,255,.72);
  font-size:13px;
  line-height:1.6;
  border-bottom:1px solid var(--line-dark);
}
.topbar__inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  min-height:38px;
  padding-top:6px;
  padding-bottom:6px;
}
.topbar__inner span i{color:var(--brand);margin-right:6px;}
.topbar__links{display:flex;align-items:center;gap:18px;}
.topbar__links a{color:rgba(255,255,255,.82);font-size:13px;}
.topbar__links a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}

/* ============ 主导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 24px rgba(12,20,36,.08);}
.nav-wrap{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  min-height:72px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:19px;
  font-weight:700;
  color:var(--t1);
  white-space:nowrap;
}
.logo:hover{color:var(--t1);}
.logo__mark{
  width:18px;height:18px;
  border-radius:50%;
  border:2px solid var(--brand);
  position:relative;
  flex:0 0 auto;
}
.logo__mark::after{
  content:"";
  position:absolute;
  top:50%;left:50%;
  width:16px;height:16px;
  margin:-8px 0 0 -8px;
  border-radius:50%;
  border:1px solid rgba(23,195,178,.45);
  transform:rotate(-28deg);
  transform-origin:center;
  border-left-color:transparent;
  border-bottom-color:transparent;
}
.logo__text b{color:var(--brand-dark);font-weight:700;}
.site-nav{display:flex;align-items:center;gap:26px;}
.site-nav a{
  position:relative;
  font-size:15px;
  color:var(--t2);
  padding:8px 0;
  font-weight:500;
}
.site-nav a::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  background:var(--brand);
  transform:scaleX(0);
  transition:transform .2s ease;
  border-radius:2px;
}
.site-nav a:hover{color:var(--t1);}
.site-nav a:hover::after{transform:scaleX(1);}
.site-nav a.is-active{color:var(--brand-dark);font-weight:600;}
.site-nav a.is-active::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;
  width:42px;height:42px;
  border:1px solid var(--line-strong);
  border-radius:var(--r-sm);
  color:var(--t1);
  font-size:17px;
  align-items:center;
  justify-content:center;
}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand-dark);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:14px 28px;
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  border-radius:var(--r-md);
  border:1px solid transparent;
  transition:background-color .2s ease,border-color .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease;
  white-space:nowrap;
}
.btn--primary{
  background:var(--brand);
  color:var(--ink);
  border-color:var(--brand);
}
.btn--primary:hover{
  background:var(--brand-hover);
  border-color:var(--brand-hover);
  color:var(--ink);
  transform:translateY(-1px);
  box-shadow:0 8px 20px rgba(14,158,144,.24);
}
.btn--primary:active{transform:translateY(0);box-shadow:none;}
.btn--ghost{
  background:transparent;
  color:var(--t1);
  border-color:var(--line-strong);
}
.btn--ghost:hover{border-color:var(--brand);color:var(--brand-dark);transform:translateY(-1px);}
.btn--ghost-light{
  background:transparent;
  color:#fff;
  border-color:rgba(255,255,255,.24);
}
.btn--ghost-light:hover{border-color:var(--brand);color:var(--brand);}
.btn--sm{padding:10px 18px;font-size:14px;}
.btn--block{width:100%;}
.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--brand-dark);
}
.link-arrow i{transition:transform .2s ease;}
.link-arrow:hover{color:var(--brand-hover);text-decoration:underline;text-underline-offset:3px;}
.link-arrow:hover i{transform:translateX(3px);}
.section--dark .link-arrow{color:var(--brand);}

/* ============ 面包屑 ============ */
.breadcrumb{
  font-size:13px;
  color:rgba(255,255,255,.62);
  padding:22px 0 0;
}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.breadcrumb li{display:flex;align-items:center;gap:8px;}
.breadcrumb li+li::before{content:"/";color:rgba(255,255,255,.34);}
.breadcrumb a{color:rgba(255,255,255,.72);}
.breadcrumb a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.breadcrumb .is-current{color:#fff;}

/* ============ 页头 Hero ============ */
.page-hero{
  position:relative;
  background-color:var(--ink);
  background-image:linear-gradient(105deg,rgba(12,20,36,.94) 0%,rgba(12,20,36,.80) 52%,rgba(12,20,36,.62) 100%),url("/assets/images/backpic/back-2.png");
  background-size:cover;
  background-position:center;
  color:#fff;
  padding-bottom:78px;
  overflow:hidden;
}
.page-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:radial-gradient(rgba(255,255,255,.10) 1px,transparent 1px);
  background-size:28px 28px;
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:1;}
.page-hero__grid{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  gap:40px;
  padding-top:44px;
}
.page-hero__main{flex:1 1 560px;min-width:0;}
.page-hero h1{
  color:#fff;
  font-size:46px;
  margin-bottom:20px;
}
.page-hero__lead{
  font-size:17px;
  line-height:1.85;
  color:rgba(255,255,255,.76);
  max-width:660px;
  margin-bottom:28px;
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:30px;}
.hero-tags span{
  display:inline-flex;
  align-items:center;
  gap:7px;
  font-size:13px;
  padding:7px 14px;
  border-radius:var(--r-pill);
  border:1px solid rgba(255,255,255,.18);
  background:rgba(255,255,255,.05);
  color:rgba(255,255,255,.86);
}
.hero-tags span i{color:var(--brand);font-size:12px;}
.page-hero__actions{display:flex;flex-wrap:wrap;gap:14px;}
.hero-card{
  flex:0 1 340px;
  background:rgba(255,255,255,.05);
  border:1px solid var(--line-dark);
  border-radius:var(--r-lg);
  padding:26px;
}
.hero-card h3{color:#fff;font-size:17px;margin-bottom:16px;}
.hero-card ul li{
  display:flex;
  gap:10px;
  align-items:flex-start;
  font-size:14px;
  color:rgba(255,255,255,.74);
  line-height:1.7;
  padding:9px 0;
  border-bottom:1px dashed rgba(255,255,255,.12);
}
.hero-card ul li:last-child{border-bottom:0;padding-bottom:0;}
.hero-card ul li i{color:var(--brand);margin-top:5px;font-size:12px;}

/* ============ 数据横条 ============ */
.stats{
  background:#fff;
  border-bottom:1px solid var(--line);
}
.stats__grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
}
.stat{
  padding:34px 26px;
  border-left:1px solid var(--line);
}
.stat:first-child{border-left:0;padding-left:0;}
.stat__num{
  font-size:30px;
  font-weight:700;
  color:var(--ink);
  line-height:1.2;
  display:flex;
  align-items:baseline;
  gap:4px;
}
.stat__num em{font-style:normal;color:var(--brand-dark);font-size:20px;font-weight:700;}
.stat__label{font-size:13px;color:var(--t3);margin-top:6px;line-height:1.6;}
.stat:nth-child(2) .stat__num em{color:var(--amber);}
.stat:nth-child(3) .stat__num em{color:var(--violet);}

/* ============ 场景卡 ============ */
.scene{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:44px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
  padding:34px;
  margin-bottom:28px;
  transition:border-color .3s ease,box-shadow .3s ease,transform .3s ease;
}
.scene:last-child{margin-bottom:0;}
.scene:hover{
  border-color:rgba(23,195,178,.5);
  box-shadow:var(--sh-2);
  transform:translateY(-2px);
}
.scene--reverse{flex-direction:row-reverse;}
.scene__media{
  flex:1 1 380px;
  min-width:0;
  border-radius:var(--r-md);
  overflow:hidden;
  background:var(--soft);
}
.scene__media img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  transition:transform .4s ease;
}
.scene:hover .scene__media img{transform:scale(1.03);}
.scene__body{flex:1 1 420px;min-width:0;}
.scene__no{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:34px;height:34px;
  border-radius:var(--r-sm);
  background:rgba(23,195,178,.12);
  color:var(--brand-dark);
  font-size:15px;
  font-weight:700;
  margin-bottom:16px;
}
.scene__body h3{margin-bottom:12px;}
.scene__body > p{color:var(--t2);font-size:15.5px;margin-bottom:18px;}
.check-list li{
  position:relative;
  padding-left:26px;
  font-size:15px;
  color:var(--t2);
  line-height:1.8;
  margin-bottom:9px;
}
.check-list li:last-child{margin-bottom:0;}
.check-list li::before{
  content:"";
  position:absolute;
  left:0;top:11px;
  width:12px;height:2px;
  background:var(--brand);
  border-radius:2px;
}
.scene__foot{margin-top:20px;}

/* ============ 步骤流程 ============ */
.steps{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
  counter-reset:step;
}
.step{
  position:relative;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:28px 24px;
  transition:border-color .3s ease,box-shadow .3s ease,transform .3s ease;
}
.step:hover{border-color:rgba(23,195,178,.5);box-shadow:var(--sh-2);transform:translateY(-2px);}
.step__idx{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:40px;height:40px;
  border-radius:var(--r-sm);
  background:var(--ink);
  color:#fff;
  font-weight:700;
  font-size:15px;
  margin-bottom:18px;
}
.step h3{font-size:18px;margin-bottom:10px;}
.step p{font-size:14.5px;color:var(--t2);line-height:1.8;margin:0;}
.step__meta{
  display:inline-block;
  margin-top:16px;
  font-size:13px;
  color:var(--brand-dark);
  background:rgba(23,195,178,.10);
  border-radius:var(--r-pill);
  padding:4px 12px;
}

/* ============ 徽章 ============ */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:13px;
  font-weight:600;
  line-height:1;
  padding:6px 12px;
  border-radius:var(--r-pill);
}
.badge--teal{background:rgba(23,195,178,.12);color:var(--brand-dark);}
.badge--amber{background:rgba(242,163,60,.14);color:#B9761F;}
.badge--violet{background:rgba(122,107,224,.14);color:#5B4CCB;}

/* ============ FAQ ============ */
.faq-layout{
  display:grid;
  grid-template-columns:minmax(0,0.9fr) minmax(0,1.6fr);
  gap:52px;
  align-items:start;
}
.faq-aside h2{margin-bottom:14px;}
.faq-aside p{color:var(--t2);font-size:15.5px;}
.faq-aside .faq-note{
  margin-top:26px;
  background:#fff;
  border:1px solid var(--line);
  border-left:3px solid var(--brand);
  border-radius:var(--r-md);
  padding:20px 22px;
  font-size:14.5px;
  color:var(--t2);
}
.faq-aside .faq-note strong{color:var(--t1);display:block;margin-bottom:6px;font-size:15px;}
.faq-accordion{
  background:transparent;
  border-top:1px solid var(--line);
  margin:0;
}
.faq-accordion .accordion-item{
  background:#fff;
  border:0;
  border-bottom:1px solid var(--line);
}
.faq-accordion .accordion-title{
  display:flex;
  align-items:center;
  gap:14px;
  min-height:56px;
  margin:0;
  padding:16px 54px 16px 22px;
  font-size:16px;
  font-weight:600;
  color:var(--t1);
  border:0;
  position:relative;
  background:#fff;
  transition:background-color .2s ease,color .2s ease;
}
.faq-accordion .accordion-title:hover{background:#FAFBFC;color:var(--brand-dark);}
.faq-accordion .accordion-title::before{
  content:"+";
  position:absolute;
  right:20px;
  top:50%;
  transform:translateY(-50%);
  width:26px;height:26px;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius:50%;
  border:1px solid var(--line-strong);
  color:var(--t2);
  font-size:15px;
  font-weight:600;
  line-height:1;
  transition:transform .25s ease,color .2s ease,border-color .2s ease;
}
.faq-accordion .accordion-item.is-active .accordion-title::before{
  content:"–";
  color:var(--brand-dark);
  border-color:var(--brand);
  transform:translateY(-50%) rotate(180deg);
}
.faq-num{
  flex:0 0 auto;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:26px;height:26px;
  border-radius:7px;
  background:rgba(23,195,178,.12);
  color:var(--brand-dark);
  font-size:13px;
  font-weight:700;
}
.faq-accordion .accordion-content{
  display:none;
  padding:0 54px 22px 62px;
  border:0;
  background:#fff;
  color:var(--t2);
  font-size:15.5px;
  line-height:1.85;
}
.faq-accordion .accordion-content p{margin:0;}

/* ============ 相关说明卡片 ============ */
.card-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:26px;
}
.card{
  display:flex;
  flex-direction:column;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:border-color .3s ease,box-shadow .3s ease,transform .3s ease;
}
.card:hover{
  border-color:rgba(23,195,178,.5);
  box-shadow:var(--sh-2);
  transform:translateY(-2px);
}
.card__media{overflow:hidden;background:var(--soft);}
.card__media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .4s ease;}
.card:hover .card__media img{transform:scale(1.03);}
.card__body{padding:24px 24px 26px;display:flex;flex-direction:column;flex:1 1 auto;}
.card__body .badge{align-self:flex-start;margin-bottom:14px;}
.card__body h3{font-size:18px;margin-bottom:10px;}
.card__body h3 a{color:var(--t1);}
.card__body h3 a:hover{color:var(--brand-dark);}
.card__body p{font-size:14.5px;color:var(--t2);line-height:1.8;margin-bottom:18px;}
.card__foot{margin-top:auto;}

/* ============ 底部 CTA ============ */
.cta-band{
  position:relative;
  background:var(--ink);
  overflow:hidden;
}
.cta-band::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:radial-gradient(rgba(255,255,255,.10) 1px,transparent 1px);
  background-size:24px 24px;
  pointer-events:none;
}
.cta-band__inner{
  position:relative;
  z-index:1;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  padding:64px 0;
}
.cta-band h2{color:#fff;font-size:30px;margin-bottom:12px;}
.cta-band p{color:rgba(255,255,255,.72);font-size:15.5px;margin:0;max-width:620px;}
.cta-band__actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--ink-2);
  color:rgba(255,255,255,.68);
  padding-top:72px;
  font-size:14px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.2fr 1fr 1fr 1.4fr;
  gap:40px;
  padding-bottom:52px;
}
.site-footer .logo{color:#fff;font-size:18px;margin-bottom:16px;}
.site-footer .logo:hover{color:#fff;}
.site-footer p{color:rgba(255,255,255,.62);font-size:14px;line-height:1.8;}
.site-footer h4{
  color:#fff;
  font-size:14px;
  font-weight:600;
  margin-bottom:18px;
  letter-spacing:.02em;
}
.footer-contact li{
  display:flex;
  gap:10px;
  align-items:flex-start;
  font-size:14px;
  color:rgba(255,255,255,.62);
  margin-bottom:10px;
  line-height:1.7;
}
.footer-contact i{color:var(--brand);margin-top:5px;font-size:12px;}
.footer-links li{margin-bottom:11px;}
.footer-links a{color:rgba(255,255,255,.68);font-size:14px;}
.footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.footer-form label{
  display:block;
  font-size:13px;
  color:rgba(255,255,255,.72);
  margin-bottom:8px;
}
.footer-form input{
  width:100%;
  height:46px;
  padding:0 14px;
  border-radius:var(--r-sm);
  border:1px solid rgba(255,255,255,.18);
  background:rgba(255,255,255,.06);
  color:#fff;
  font-size:14px;
  margin-bottom:12px;
  transition:border-color .2s ease,background-color .2s ease;
}
.footer-form input::placeholder{color:rgba(255,255,255,.40);}
.footer-form input:focus{
  outline:none;
  border-color:var(--brand);
  background:rgba(255,255,255,.10);
}
.footer-form .btn{margin-bottom:12px;}
.footer-form .hint{font-size:13px;color:rgba(255,255,255,.50);margin:0;}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:20px 0 26px;
  border-top:1px solid var(--line-dark);
  font-size:13px;
  color:rgba(255,255,255,.50);
}

/* ============ 响应式 ============ */
@media screen and (min-width:1280px){
  .container{max-width:1280px;}
}
@media screen and (max-width:1023px){
  :root{--sec:72px;}
  .nav-toggle{display:inline-flex;}
  .site-nav{
    position:absolute;
    top:100%;
    left:0;
    right:0;
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    background:#fff;
    border-bottom:1px solid var(--line);
    box-shadow:0 18px 40px rgba(12,20,36,.10);
    padding:8px 0 18px;
  }
  .site-nav.is-open{display:flex;}
  .site-nav a{
    padding:15px 24px;
    font-size:16px;
    border-bottom:1px solid var(--line);
  }
  .site-nav a:last-child{border-bottom:0;}
  .site-nav a::after{display:none;}
  .site-nav a.is-active{background:var(--soft);}
  .page-hero h1{font-size:36px;}
  .hero-card{flex:1 1 100%;}
  .stats__grid{grid-template-columns:repeat(2,1fr);}
  .stat{padding:26px 22px;border-left:0;border-top:1px solid var(--line);}
  .stat:nth-child(1),.stat:nth-child(2){border-top:0;}
  .stat:nth-child(odd){padding-left:0;}
  .steps{grid-template-columns:repeat(2,1fr);}
  .faq-layout{grid-template-columns:1fr;gap:34px;}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:36px;}
}
@media screen and (max-width:767px){
  .scene{padding:24px;gap:26px;}
  .scene__media,.scene__body{flex:1 1 100%;}
  .scene--reverse{flex-direction:column;}
  .card-grid{grid-template-columns:1fr;}
}
@media screen and (max-width:639px){
  :root{--sec:56px;}
  .container{padding-left:20px;padding-right:20px;}
  body{font-size:15.5px;}
  h1{font-size:30px;}
  .page-hero h1{font-size:30px;}
  h2{font-size:24px;}
  h3{font-size:19px;}
  .page-hero{padding-bottom:56px;}
  .page-hero__grid{padding-top:30px;gap:28px;}
  .page-hero__lead{font-size:15.5px;}
  .topbar__notice{display:none;}
  .topbar__inner{justify-content:flex-end;}
  .stats__grid{grid-template-columns:1fr;}
  .stat{padding:22px 0;}
  .stat+.stat{border-top:1px solid var(--line);}
  .steps{grid-template-columns:1fr;}
  .faq-accordion .accordion-title{padding:15px 48px 15px 16px;font-size:15.5px;}
  .faq-accordion .accordion-content{padding:0 44px 20px 52px;}
  .cta-band__inner{padding:48px 0;}
  .cta-band h2{font-size:23px;}
  .footer-grid{grid-template-columns:1fr;}
  .logo{font-size:17px;}
  .nav-wrap{min-height:64px;}
}

/* roulang page: category4 */
:root{
  --ink:#0C1424;
  --ink-2:#132140;
  --brand:#17C3B2;
  --brand-deep:#0E9E90;
  --brand-hover:#0FA79A;
  --amber:#F2A33C;
  --violet:#7A6BE0;
  --t1:#1A2233;
  --t2:#5A6478;
  --t3:#8A93A6;
  --bg:#F5F7FA;
  --card:#FFFFFF;
  --soft:#EEF1F6;
  --line:#E4E8EF;
  --line-dark:rgba(255,255,255,.10);
  --r-card:16px;
  --r-img:12px;
  --r-btn:12px;
  --r-input:10px;
  --sh-1:0 1px 2px rgba(12,20,36,.04), 0 10px 30px rgba(12,20,36,.06);
  --sh-2:0 4px 10px rgba(12,20,36,.06), 0 18px 40px rgba(12,20,36,.10);
  --sp:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--t1);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand-deep);text-decoration:none;transition:color .2s ease,border-color .2s ease;}
a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
@media(min-width:1280px){.container{max-width:1280px;}}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}

/* ============ 顶部信息条 ============ */
.topbar{height:38px;background:var(--ink);color:rgba(255,255,255,.72);font-size:13px;line-height:38px;}
.topbar .container{display:flex;align-items:center;justify-content:space-between;gap:16px;}
.topbar__note{display:flex;align-items:center;gap:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.topbar__note i{color:var(--brand);}
.topbar__links{display:flex;align-items:center;gap:18px;flex-shrink:0;}
.topbar__links a{color:rgba(255,255,255,.78);font-size:13px;}
.topbar__links a:hover{color:#fff;text-decoration:none;}
.topbar__links a i{margin-right:6px;color:var(--brand);}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 20px rgba(12,20,36,.07);}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:70px;}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--t1);font-weight:700;font-size:19px;letter-spacing:0;text-decoration:none;}
.logo:hover{color:var(--t1);text-decoration:none;}
.logo__mark{
  width:22px;height:22px;border-radius:50%;
  background:radial-gradient(circle at 30% 30%,var(--brand) 0 34%,transparent 35%),
             radial-gradient(circle at 72% 68%,var(--amber) 0 18%,transparent 19%),
             linear-gradient(135deg,var(--ink) 0%,var(--ink-2) 100%);
  border:1px solid rgba(23,195,178,.55);flex-shrink:0;
}
.logo__text b{color:var(--brand-deep);font-weight:700;}
.site-nav{display:flex;align-items:center;gap:4px;}
.site-nav a{
  position:relative;display:inline-block;padding:10px 12px;font-size:15px;color:var(--t2);
  border-radius:8px;white-space:nowrap;text-decoration:none;
}
.site-nav a:hover{color:var(--brand-deep);background:rgba(23,195,178,.07);text-decoration:none;}
.site-nav a.is-active{color:var(--t1);font-weight:600;}
.site-nav a.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;background:var(--brand);border-radius:2px;
}
.nav-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--line);background:#fff;color:var(--t1);
  border-radius:10px;font-size:17px;cursor:pointer;transition:border-color .2s ease,color .2s ease;
}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand-deep);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--r-btn);font-size:15px;font-weight:600;line-height:1;
  cursor:pointer;border:1px solid transparent;transition:all .2s ease;text-decoration:none;
}
.btn:hover{text-decoration:none;}
.btn--primary{background:var(--brand);color:var(--ink);box-shadow:0 8px 20px rgba(23,195,178,.22);}
.btn--primary:hover{background:var(--brand-hover);color:var(--ink);transform:translateY(-1px);box-shadow:0 10px 26px rgba(23,195,178,.30);}
.btn--primary:active{transform:translateY(0);box-shadow:0 6px 16px rgba(23,195,178,.20);}
.btn--ghost{background:transparent;border-color:#D8DEE9;color:var(--t1);}
.btn--ghost:hover{border-color:var(--brand);color:var(--brand-deep);transform:translateY(-1px);}
.btn--ghost-light{background:transparent;border-color:rgba(255,255,255,.24);color:rgba(255,255,255,.9);}
.btn--ghost-light:hover{border-color:var(--brand);color:var(--brand);}
.btn--sm{padding:11px 20px;font-size:14px;}
.btn--block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.5;pointer-events:none;}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:6px 12px;border-radius:999px;
  font-size:13px;font-weight:600;line-height:1;
}
.badge--brand{background:rgba(23,195,178,.12);color:var(--brand-deep);}
.badge--amber{background:rgba(242,163,60,.14);color:#B8721B;}
.badge--violet{background:rgba(122,107,224,.12);color:#5B4DD1;}
.badge--light{background:rgba(255,255,255,.12);color:rgba(255,255,255,.88);}

/* ============ 页头 Hero ============ */
.page-hero{
  position:relative;overflow:hidden;background:var(--ink);color:#fff;
  padding:76px 0 88px;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.10) 1px,transparent 1px),
                   radial-gradient(rgba(23,195,178,.10) 1px,transparent 1px);
  background-size:26px 26px,26px 26px;background-position:0 0,13px 13px;
  opacity:.9;pointer-events:none;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(90deg,rgba(12,20,36,.94) 0%,rgba(12,20,36,.80) 52%,rgba(12,20,36,.60) 100%);
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:2;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.62);margin-bottom:26px;}
.breadcrumb a{color:rgba(255,255,255,.78);}
.breadcrumb a:hover{color:var(--brand);text-decoration:none;}
.breadcrumb i{font-size:10px;color:rgba(255,255,255,.4);}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;}
.page-hero h1{
  font-size:46px;line-height:1.25;font-weight:700;letter-spacing:0;margin:18px 0 20px;color:#fff;
}
.page-hero h1 em{font-style:normal;color:var(--brand);}
.hero-lead{font-size:17px;line-height:1.85;color:rgba(255,255,255,.76);max-width:620px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero-facts{display:flex;flex-wrap:wrap;gap:36px;margin-top:42px;padding-top:26px;border-top:1px solid var(--line-dark);}
.hero-fact strong{display:block;font-size:26px;font-weight:700;color:#fff;line-height:1.3;font-variant-numeric:tabular-nums;}
.hero-fact span{font-size:13px;color:rgba(255,255,255,.60);}
.hero-media{position:relative;border-radius:var(--r-card);overflow:hidden;}
.hero-media img{width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:var(--r-card);background:#1B2740;}
.hero-media__grid{
  position:absolute;inset:0;border-radius:var(--r-card);pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:44px 44px;
}
.hero-media__tag{
  position:absolute;left:18px;bottom:18px;background:rgba(12,20,36,.82);
  border:1px solid var(--line-dark);border-radius:999px;padding:8px 14px;font-size:13px;color:rgba(255,255,255,.88);
}

/* ============ 通用板块 ============ */
.section{padding:var(--sp) 0;}
.section--soft{background:var(--soft);}
.section--white{background:#fff;}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head h2{font-size:34px;line-height:1.3;font-weight:700;color:var(--t1);}
.section-head p{margin-top:18px;font-size:16px;line-height:1.85;color:var(--t2);}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--brand-deep);letter-spacing:.04em;}
.eyebrow::before{content:"";width:18px;height:2px;border-radius:2px;background:var(--brand);display:inline-block;}

/* ============ 指标条 ============ */
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:0;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;}
.metric{padding:30px 28px;border-right:1px solid var(--line);}
.metric:last-child{border-right:0;}
.metric strong{display:block;font-size:30px;font-weight:700;color:var(--t1);line-height:1.25;font-variant-numeric:tabular-nums;}
.metric strong span{font-size:16px;color:var(--brand-deep);margin-left:4px;}
.metric p{margin-top:8px;font-size:14px;color:var(--t3);line-height:1.7;}

/* ============ 对比表 ============ */
.table-scroll{
  position:relative;overflow-x:auto;-webkit-overflow-scrolling:touch;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);
}
.compare-table{width:100%;min-width:820px;border-collapse:collapse;font-size:15px;}
.compare-table caption{text-align:left;padding:22px 24px 0;font-size:13px;color:var(--t3);}
.compare-table th,.compare-table td{padding:18px 22px;text-align:left;vertical-align:top;border-bottom:1px solid var(--line);}
.compare-table thead th{
  background:var(--soft);font-size:14px;font-weight:600;color:var(--t2);white-space:nowrap;
  border-bottom:1px solid var(--line);
}
.compare-table thead th.is-brand{color:var(--brand-deep);background:rgba(23,195,178,.10);}
.compare-table tbody tr{transition:background .2s ease;}
.compare-table tbody tr:hover{background:rgba(23,195,178,.06);}
.compare-table tbody tr:last-child td{border-bottom:0;}
.compare-table td.dim{color:var(--t2);}
.compare-table td strong{color:var(--t1);}
.cell-mark{display:inline-flex;align-items:center;gap:8px;color:var(--brand-deep);font-weight:600;}
.cell-mark i{font-size:13px;}
.table-note{margin-top:18px;font-size:14px;color:var(--t3);}

/* ============ 卡片 ============ */
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);overflow:hidden;height:100%;
  transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;
  display:flex;flex-direction:column;
}
.card:hover{transform:translateY(-2px);border-color:rgba(23,195,178,.5);box-shadow:var(--sh-2);}
.card__media{overflow:hidden;background:var(--soft);}
.card__media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0;transition:transform .4s ease;}
.card:hover .card__media img{transform:scale(1.03);}
.card__body{padding:26px;display:flex;flex-direction:column;gap:14px;flex:1;}
.card__body h3{font-size:21px;line-height:1.45;font-weight:600;color:var(--t1);}
.card__body h3 a{color:inherit;}
.card__body h3 a:hover{color:var(--brand-deep);text-decoration:none;}
.card__body p{font-size:15px;line-height:1.8;color:var(--t2);}
.card__meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:16px;border-top:1px solid var(--line);font-size:13px;color:var(--t3);}
.card__meta i{color:var(--brand-deep);}

/* ============ 编号要点行 ============ */
.steps{display:flex;flex-direction:column;gap:0;border-top:1px solid var(--line);}
.step{display:grid;grid-template-columns:64px 1fr;gap:26px;padding:32px 0;border-bottom:1px solid var(--line);}
.step__num{
  width:48px;height:48px;border-radius:12px;background:rgba(23,195,178,.12);color:var(--brand-deep);
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:17px;font-variant-numeric:tabular-nums;
}
.step h3{font-size:22px;font-weight:600;line-height:1.4;color:var(--t1);margin-bottom:10px;}
.step p{font-size:15.5px;line-height:1.85;color:var(--t2);max-width:860px;}
.step ul{margin-top:14px;display:flex;flex-wrap:wrap;gap:10px 24px;}
.step ul li{position:relative;padding-left:18px;font-size:14.5px;color:var(--t2);}
.step ul li::before{content:"";position:absolute;left:0;top:11px;width:8px;height:2px;border-radius:2px;background:var(--brand);}

/* ============ FAQ / Accordion ============ */
.faq-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:56px;align-items:start;}
.accordion{border-top:1px solid var(--line);background:transparent;list-style:none;margin:0;}
.accordion .accordion-item{border-bottom:1px solid var(--line);}
.accordion .accordion-title{
  display:flex;align-items:center;gap:14px;padding:22px 4px;font-size:16.5px;font-weight:600;color:var(--t1);
  background:transparent;border:0;text-decoration:none;
}
.accordion .accordion-title:hover{color:var(--brand-deep);text-decoration:none;background:transparent;}
.accordion .accordion-title::before{
  content:"＋";flex-shrink:0;width:26px;height:26px;border-radius:8px;background:rgba(23,195,178,.12);
  color:var(--brand-deep);font-size:14px;display:flex;align-items:center;justify-content:center;line-height:1;
  transition:transform .25s ease;font-weight:700;
}
.accordion .accordion-item.is-active .accordion-title::before{content:"－";transform:rotate(180deg);}
.accordion .accordion-content{padding:0 4px 24px 44px;font-size:15.5px;line-height:1.9;color:var(--t2);background:transparent;border:0;}
.faq-aside{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:30px;box-shadow:var(--sh-1);
}
.faq-aside h3{font-size:19px;font-weight:600;margin-bottom:14px;}
.faq-aside p{font-size:15px;color:var(--t2);line-height:1.85;}
.faq-aside ul{margin-top:20px;display:flex;flex-direction:column;gap:12px;}
.faq-aside ul li{display:flex;gap:10px;font-size:14.5px;color:var(--t2);}
.faq-aside ul li i{color:var(--brand);margin-top:6px;font-size:12px;}

/* ============ 资讯三条 ============ */
.news-card{display:flex;gap:18px;padding:22px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;height:100%;}
.news-card:hover{transform:translateY(-2px);border-color:rgba(23,195,178,.5);box-shadow:var(--sh-2);}
.news-card__thumb{flex:0 0 104px;border-radius:var(--r-img);overflow:hidden;background:var(--soft);}
.news-card__thumb img{width:104px;height:88px;object-fit:cover;}
.news-card__body{display:flex;flex-direction:column;gap:8px;}
.news-card__body h3{font-size:16.5px;font-weight:600;line-height:1.5;}
.news-card__body h3 a{color:var(--t1);}
.news-card__body h3 a:hover{color:var(--brand-deep);text-decoration:none;}
.news-card__body p{font-size:13.5px;color:var(--t3);line-height:1.7;}
.news-card__body time{font-size:13px;color:var(--t3);}

/* ============ 底部 CTA ============ */
.cta-band{
  position:relative;overflow:hidden;background:var(--ink);color:#fff;padding:82px 0;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.10) 1px,transparent 1px);
  background-size:24px 24px;opacity:.9;pointer-events:none;
}
.cta-band .container{position:relative;z-index:2;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:32px;}
.cta-band h2{font-size:32px;line-height:1.35;font-weight:700;color:#fff;}
.cta-band p{margin-top:14px;font-size:16px;color:rgba(255,255,255,.72);max-width:620px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;flex-shrink:0;}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);padding:76px 0 0;font-size:14px;}
.footer-grid{display:grid;grid-template-columns:1.2fr 1fr 1fr 1.4fr;gap:44px;padding-bottom:52px;}
.site-footer .logo{color:#fff;font-size:18px;}
.site-footer .logo:hover{color:#fff;}
.site-footer .logo__text b{color:var(--brand);}
.footer-brand p{margin-top:18px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.66);max-width:340px;}
.footer-contact{margin-top:20px;display:flex;flex-direction:column;gap:10px;}
.footer-contact li{display:flex;gap:10px;font-size:13.5px;color:rgba(255,255,255,.66);line-height:1.7;}
.footer-contact i{color:var(--brand);margin-top:5px;font-size:13px;}
.site-footer h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:20px;letter-spacing:.02em;}
.footer-links{display:flex;flex-direction:column;gap:12px;}
.footer-links a{color:rgba(255,255,255,.68);font-size:14px;}
.footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.footer-sub p{font-size:13.5px;color:rgba(255,255,255,.66);line-height:1.8;margin-bottom:18px;}
.footer-form label{display:block;font-size:13px;color:rgba(255,255,255,.72);margin-bottom:8px;}
.footer-form input{
  width:100%;height:46px;padding:0 14px;border-radius:var(--r-input);
  border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.06);color:#fff;font-size:14px;
  transition:border-color .2s ease,background .2s ease;
}
.footer-form input::placeholder{color:rgba(255,255,255,.42);}
.footer-form input:focus{outline:none;border-color:var(--brand);background:rgba(255,255,255,.09);}
.footer-form .btn{margin-top:14px;}
.footer-form .hint{margin-top:12px;font-size:13px;color:rgba(255,255,255,.5);}
.footer-bottom{
  border-top:1px solid var(--line-dark);padding:22px 0;display:flex;flex-wrap:wrap;gap:12px;
  align-items:center;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.55);
}

/* ============ 响应式 ============ */
@media(max-width:1023px){
  :root{--sp:72px;}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;}
  .site-nav{
    position:absolute;left:0;right:0;top:100%;background:#fff;border-bottom:1px solid var(--line);
    flex-direction:column;align-items:stretch;gap:0;padding:8px 16px 18px;
    box-shadow:0 18px 34px rgba(12,20,36,.10);display:none;
  }
  .site-nav.is-open{display:flex;}
  .site-nav a{padding:15px 6px;font-size:15.5px;border-bottom:1px solid var(--line);border-radius:0;}
  .site-nav a:last-child{border-bottom:0;}
  .site-nav a.is-active::after{display:none;}
  .site-nav a.is-active{color:var(--brand-deep);}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .page-hero{padding:56px 0 64px;}
  .page-hero h1{font-size:36px;}
  .metrics{grid-template-columns:repeat(2,1fr);}
  .metric:nth-child(2){border-right:0;}
  .metric:nth-child(1),.metric:nth-child(2){border-bottom:1px solid var(--line);}
  .faq-grid{grid-template-columns:1fr;gap:36px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .cta-band{padding:64px 0;}
  .cta-band h2{font-size:27px;}
}
@media(max-width:639px){
  :root{--sp:56px;}
  .container{padding:0 20px;}
  .topbar__note{display:none;}
  .page-hero h1{font-size:31px;}
  .hero-lead{font-size:16px;}
  .hero-facts{gap:24px;}
  .hero-fact strong{font-size:22px;}
  .section-head h2{font-size:24px;}
  .section-head p{font-size:15.5px;}
  .metrics{grid-template-columns:1fr;}
  .metric{border-right:0;border-bottom:1px solid var(--line);}
  .metric:last-child{border-bottom:0;}
  .step{grid-template-columns:44px 1fr;gap:16px;padding:26px 0;}
  .step__num{width:40px;height:40px;font-size:15px;border-radius:10px;}
  .step h3{font-size:19px;}
  .accordion .accordion-title{font-size:15.5px;padding:18px 2px;}
  .accordion .accordion-content{padding-left:0;}
  .footer-grid{grid-template-columns:1fr;}
  .cta-band h2{font-size:23px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .news-card{flex-direction:column;}
  .news-card__thumb,.news-card__thumb img{width:100%;height:150px;flex:none;}
  .compare-table{font-size:14px;}
  .compare-table th,.compare-table td{padding:14px 16px;}
}