/* roulang page: index */
:root{
  --primary:#1C4E93;
  --primary-dark:#123A70;
  --primary-light:#E8EFFA;
  --accent:#F26A2E;
  --accent-dark:#D8551C;
  --green:#2E9E7E;
  --bg:#F4F7FB;
  --card:#FFFFFF;
  --line:#E3E9F2;
  --text:#16202E;
  --muted:#5B6B80;
  --weak:#8A97A8;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-badge:6px;
  --radius-pill:999px;
  --shadow:0 6px 24px rgba(22,32,46,.06);
  --shadow-hover:0 14px 34px rgba(22,32,46,.10);
  --section-gap:clamp(56px,8vw,104px);
  --bs-primary:#1C4E93;
  --bs-body-color:#16202E;
  --bs-body-bg:#F4F7FB;
  --bs-border-radius:14px;
  --bs-font-sans-serif:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--bs-font-sans-serif);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--primary);text-decoration:none;transition:color .2s ease,background-color .2s ease,transform .2s ease;}
a:hover{color:var(--primary-dark);}
h1,h2,h3,h4{letter-spacing:-.01em;margin:0;font-weight:700;color:var(--text);}
h1{font-size:clamp(30px,4.4vw,52px);line-height:1.22;}
h2{font-size:clamp(24px,3vw,34px);line-height:1.3;}
h3{font-size:20px;font-weight:600;line-height:1.45;}
p{margin:0 0 18px;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:992px){.container{padding:0 32px;}}
@media (min-width:1400px){.container{max-width:1320px;}}
.section{padding:var(--section-gap) 0;}
.section-head{margin-bottom:clamp(28px,4vw,48px);}
.section-head h2{margin-bottom:12px;}
.section-head p{color:var(--muted);max-width:640px;margin:0;}
.section-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--primary);
  background:var(--primary-light);border-radius:var(--radius-badge);
  padding:5px 12px;margin-bottom:16px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(255,255,255,.96);
  backdrop-filter:saturate(150%) blur(8px);
  border-bottom:1px solid transparent;
  transition:border-color .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 4px 18px rgba(22,32,46,.06);}
.header-inner{display:flex;align-items:center;gap:20px;min-height:74px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:38px;height:38px;border-radius:11px;
  background:var(--primary);color:#fff;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px rgba(28,78,147,.28);
}
.brand-mark svg{width:20px;height:20px;}
.brand-text{font-size:19px;font-weight:700;color:var(--text);letter-spacing:-.01em;white-space:nowrap;}
.brand:hover .brand-text{color:var(--primary);}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto;flex-wrap:wrap;}
.nav-pill{
  display:inline-flex;align-items:center;
  min-height:42px;padding:0 16px;border-radius:var(--radius-pill);
  font-size:15px;font-weight:500;color:var(--muted);
}
.nav-pill:hover{background:var(--primary-light);color:var(--primary);}
.nav-pill.active{background:var(--primary-light);color:var(--primary);font-weight:600;}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  cursor:pointer;transition:all .2s ease;text-align:center;
}
.btn svg{width:16px;height:16px;flex:0 0 auto;}
.btn-primary-solid{background:var(--primary);color:#fff;box-shadow:0 6px 18px rgba(28,78,147,.22);}
.btn-primary-solid:hover{background:var(--primary-dark);color:#fff;transform:translateY(-2px);}
.btn-ghost{background:transparent;border-color:var(--primary);color:var(--primary);}
.btn-ghost:hover{background:var(--primary-light);color:var(--primary-dark);}
.btn-cta{background:var(--accent);color:#fff;border-radius:var(--radius-pill);min-height:44px;padding:0 22px;}
.btn-cta:hover{background:var(--accent-dark);color:#fff;transform:scale(1.02);}
.btn-block{width:100%;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  background:var(--primary-light);border:1px solid var(--line);color:var(--primary);
  align-items:center;justify-content:center;
}
.nav-toggle svg{width:20px;height:20px;}
.offcanvas{max-width:320px;}
.offcanvas-header{padding:20px 22px;border-bottom:1px solid var(--line);}
.offcanvas-body{padding:22px;}
.mobile-nav-list{display:flex;flex-direction:column;gap:10px;}
.mobile-nav-list a{
  display:block;padding:14px 18px;border-radius:var(--radius-btn);
  background:var(--bg);color:var(--text);font-weight:600;font-size:16px;
}
.mobile-nav-list a.active,.mobile-nav-list a:hover{background:var(--primary-light);color:var(--primary);}
.mobile-cta{margin-top:20px;}
@media (max-width:1199px){
  .nav-pill{padding:0 12px;font-size:14.5px;}
}
@media (max-width:991px){
  .main-nav{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-actions .btn-cta{display:none;}
}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  background-image:url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(244,247,251,.94) 0%,rgba(244,247,251,.88) 48%,rgba(232,239,250,.86) 100%);
}
.hero-inner{position:relative;padding:clamp(48px,7vw,92px) 0 clamp(44px,6vw,80px);}
.hero-grid{display:grid;grid-template-columns:1fr;gap:clamp(28px,4vw,52px);align-items:center;}
@media (min-width:992px){.hero-grid{grid-template-columns:6fr 6fr;}}
.hero h1{margin-bottom:18px;}
.hero h1 .hl{color:var(--primary);}
.hero-sub{font-size:17px;color:var(--muted);margin-bottom:28px;max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:32px;}
.hero-trust{display:flex;flex-wrap:wrap;gap:12px 28px;padding-top:24px;border-top:1px solid var(--line);}
.trust-item{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--muted);}
.trust-item svg{width:20px;height:20px;color:var(--primary);flex:0 0 auto;}
.trust-item b{display:block;font-size:17px;font-weight:700;color:var(--text);line-height:1.35;}
.hero-media{position:relative;}
.hero-media::after{
  content:"";position:absolute;inset:12px -12px -12px 12px;
  border:8px solid rgba(28,78,147,.08);border-radius:22px;z-index:0;
}
.hero-media img{
  position:relative;z-index:1;width:100%;aspect-ratio:16/11;object-fit:cover;
  border-radius:18px;box-shadow:var(--shadow-hover);
}
.hero-badge{
  position:absolute;z-index:2;left:18px;bottom:18px;
  background:rgba(255,255,255,.96);border:1px solid var(--line);border-radius:12px;
  padding:12px 16px;box-shadow:var(--shadow);font-size:13px;color:var(--muted);
}
.hero-badge b{display:block;font-size:18px;color:var(--primary);font-weight:700;}

/* ---------- 数据条 ---------- */
.stats{background:var(--card);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.stats-grid{display:grid;grid-template-columns:repeat(2,1fr);}
.stat-item{padding:26px 20px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);}
.stat-item:nth-child(2n){border-right:none;}
.stat-item:nth-last-child(-n+2){border-bottom:none;}
.stat-num{font-size:clamp(26px,3vw,36px);font-weight:700;color:var(--primary);line-height:1.1;}
.stat-label{font-size:13.5px;color:var(--muted);margin-top:6px;}
@media (min-width:768px){
  .stats-grid{grid-template-columns:repeat(4,1fr);}
  .stat-item{border-bottom:none;}
  .stat-item:nth-child(2n){border-right:1px solid var(--line);}
  .stat-item:last-child{border-right:none;}
}

/* ---------- 功能分组 ---------- */
.capability-grid{display:grid;grid-template-columns:1fr;gap:clamp(28px,4vw,52px);}
@media (min-width:992px){.capability-grid{grid-template-columns:280px 1fr;align-items:start;}}
.capability-aside{position:relative;}
@media (min-width:992px){.capability-aside{position:sticky;top:104px;}}
.capability-aside h2{font-size:clamp(24px,2.6vw,30px);margin-bottom:14px;}
.capability-aside p{color:var(--muted);font-size:15px;}
.cap-grid{display:grid;grid-template-columns:1fr;gap:22px;}
@media (min-width:768px){.cap-grid{grid-template-columns:repeat(3,1fr);}}
.cap-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow);padding:26px;display:flex;flex-direction:column;gap:12px;
  transition:transform .2s ease,box-shadow .2s ease;
}
.cap-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);}
.cap-card h3{font-size:19px;}
.cap-card p{font-size:14.5px;color:var(--muted);margin:0;}
.cap-link{display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--primary);margin-top:auto;}
.cap-link svg{width:15px;height:15px;transition:transform .2s ease;}
.cap-link:hover svg{transform:translateX(3px);}
.cap-card-lg{grid-column:span 1;padding:0;overflow:hidden;}
@media (min-width:768px){.cap-card-lg{grid-column:span 2;flex-direction:row;align-items:stretch;}}
.cap-card-lg img{width:100%;height:100%;min-height:220px;object-fit:cover;}
@media (max-width:767px){.cap-card-lg img{min-height:200px;}}
.cap-lg-body{padding:28px;display:flex;flex-direction:column;gap:14px;flex:1;}
.cap-icon{
  width:44px;height:44px;border-radius:12px;background:var(--primary-light);color:var(--primary);
  display:flex;align-items:center;justify-content:center;
}
.cap-icon svg{width:22px;height:22px;}

/* ---------- 使用场景 ---------- */
.scenes{background:var(--card);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.scene-tabs{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:32px;}
.scene-tab{
  min-height:44px;padding:0 20px;border-radius:var(--radius-pill);
  background:var(--bg);border:1px solid var(--line);color:var(--muted);
  font-size:15px;font-weight:600;cursor:pointer;transition:all .2s ease;
}
.scene-tab:hover{background:var(--primary-light);color:var(--primary);}
.scene-tab.active{background:var(--primary);border-color:var(--primary);color:#fff;}
.scene-panel{display:none;grid-template-columns:1fr;gap:clamp(24px,4vw,44px);align-items:center;}
.scene-panel.active{display:grid;}
@media (min-width:992px){.scene-panel.active{grid-template-columns:58% 1fr;}}
.scene-panel img{
  width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:16px;box-shadow:var(--shadow);
}
.scene-panel h3{font-size:22px;margin-bottom:12px;}
.scene-panel p{color:var(--muted);font-size:15px;}
.scene-list{display:flex;flex-direction:column;gap:10px;margin-top:18px;}
.scene-list li{display:flex;gap:10px;font-size:14.5px;color:var(--muted);}
.scene-list li::before{
  content:"";width:7px;height:7px;border-radius:50%;background:var(--green);
  margin-top:11px;flex:0 0 auto;
}
@media (max-width:767px){
  .scene-tabs{display:none;}
  .scene-panel,.scene-panel.active{display:grid;margin-bottom:36px;}
}

/* ---------- 案例 ---------- */
.case-wrap{display:grid;grid-template-columns:1fr;gap:28px;}
@media (min-width:992px){.case-wrap{grid-template-columns:repeat(2,1fr);gap:36px;}}
.case-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow);overflow:hidden;display:flex;flex-direction:column;
  transition:transform .2s ease,box-shadow .2s ease;
}
.case-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);}
.case-card img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.case-body{padding:26px;display:flex;flex-direction:column;gap:14px;flex:1;}
.case-tag{
  align-self:flex-start;font-size:12.5px;font-weight:600;color:var(--green);
  background:rgba(46,158,126,.10);border-radius:var(--radius-badge);padding:5px 11px;
}
.case-card h3{font-size:20px;}
.case-metrics{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin:2px 0;}
.case-metrics div{background:var(--bg);border-radius:10px;padding:12px 14px;}
.case-metrics b{display:block;font-size:19px;color:var(--primary);font-weight:700;}
.case-metrics span{font-size:13px;color:var(--weak);}
.case-quote{
  font-size:14.5px;color:var(--muted);border-left:3px solid var(--primary-light);
  padding-left:14px;
}
@media (min-width:992px){
  .case-card:first-child{margin-top:24px;}
  .case-card:last-child{margin-top:64px;}
}
.case-more{margin-top:32px;}

/* ---------- 价格 ---------- */
.pricing{background:var(--card);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.price-grid{display:grid;grid-template-columns:1fr;gap:24px;align-items:start;}
@media (min-width:992px){.price-grid{grid-template-columns:repeat(3,1fr);gap:22px;}}
.price-card{
  position:relative;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius-card);box-shadow:var(--shadow);padding:30px 26px;
  display:flex;flex-direction:column;gap:18px;
}
.price-card.featured{
  border-color:var(--primary);box-shadow:var(--shadow-hover);
}
@media (min-width:992px){.price-card.featured{transform:translateY(-12px);}}
.price-badge{
  position:absolute;top:-13px;left:26px;background:var(--accent);color:#fff;
  font-size:12.5px;font-weight:700;border-radius:var(--radius-badge);padding:5px 12px;
}
.price-name{font-size:17px;font-weight:700;}
.price-amount{font-size:38px;font-weight:700;color:var(--primary);line-height:1;}
.price-amount small{font-size:14px;color:var(--weak);font-weight:500;margin-left:6px;}
.price-desc{font-size:14px;color:var(--muted);}
.price-list{display:flex;flex-direction:column;gap:10px;}
.price-list li{display:flex;gap:10px;font-size:14.5px;color:var(--muted);}
.price-list li svg{width:17px;height:17px;color:var(--green);flex:0 0 auto;margin-top:4px;}
.price-note{margin-top:26px;font-size:14px;color:var(--muted);text-align:center;}
.price-note a{font-weight:600;color:var(--primary);}

/* ---------- 资讯 ---------- */
.news-grid{display:grid;grid-template-columns:1fr;gap:24px;}
@media (min-width:992px){.news-grid{grid-template-columns:1.1fr 1fr;gap:32px;}}
.news-feature{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow);overflow:hidden;display:flex;flex-direction:column;
  transition:transform .2s ease,box-shadow .2s ease;
}
.news-feature:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);}
.news-feature img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.news-feature-body{padding:26px;display:flex;flex-direction:column;gap:12px;}
.badge-cat{
  align-self:flex-start;font-size:12.5px;font-weight:600;color:var(--primary);
  background:var(--primary-light);border-radius:var(--radius-badge);padding:5px 11px;
}
.news-feature h3{font-size:21px;}
.news-feature h3 a{color:var(--text);}
.news-feature h3 a:hover{color:var(--primary);}
.news-excerpt{font-size:14.5px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-meta{font-size:13.5px;color:var(--weak);display:flex;gap:10px;flex-wrap:wrap;align-items:center;}
.news-list{display:flex;flex-direction:column;gap:18px;}
.news-item{
  display:grid;grid-template-columns:112px 1fr;gap:16px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow);padding:16px;transition:transform .2s ease,box-shadow .2s ease;
}
.news-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);}
.news-item img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:10px;}
.news-item h3{font-size:16.5px;margin-bottom:6px;}
.news-item h3 a{color:var(--text);}
.news-item h3 a:hover{color:var(--primary);}
.news-item .news-excerpt{-webkit-line-clamp:2;font-size:13.5px;margin-bottom:8px;}
.news-empty{
  min-height:320px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:14px;background:var(--card);border:1px dashed var(--line);border-radius:var(--radius-card);
  padding:40px 24px;text-align:center;
}
.news-empty svg{width:44px;height:44px;color:var(--weak);}
.news-empty p{color:var(--muted);font-size:15px;margin:0;}
@media (max-width:575px){
  .news-item{grid-template-columns:1fr;}
  .news-item img{aspect-ratio:16/9;}
}

/* ---------- FAQ ---------- */
.faq-section .accordion{max-width:880px;margin:0 auto;}
.accordion-item{
  border:1px solid var(--line);border-radius:var(--radius-card)!important;
  background:var(--card);margin-bottom:14px;overflow:hidden;box-shadow:var(--shadow);
}
.accordion-button{
  font-size:17px;font-weight:600;color:var(--text);background:var(--card);
  padding:20px 24px;display:flex;gap:14px;align-items:flex-start;
  box-shadow:none!important;
}
.accordion-button:not(.collapsed){background:var(--primary-light);color:var(--primary);border-left:4px solid var(--accent);}
.accordion-button::after{
  margin-left:auto;flex:0 0 auto;width:16px;height:16px;background-size:16px;
  filter:invert(28%) sepia(38%) saturate(1600%) hue-rotate(190deg) brightness(88%) contrast(92%);
}
.faq-index{color:var(--accent);font-weight:700;flex:0 0 auto;}
.accordion-body{padding:20px 24px;font-size:15px;color:var(--muted);}

/* ---------- 转化条 ---------- */
.cta-band{background:var(--primary-light);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.cta-inner{
  padding:clamp(36px,5vw,56px) 0;display:flex;flex-wrap:wrap;
  align-items:center;justify-content:space-between;gap:24px;
}
.cta-inner h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:8px;}
.cta-inner p{color:var(--muted);font-size:15px;margin:0;}

/* ---------- 页脚 ---------- */
.site-footer{background:#0F2A4D;color:#C6D4E6;font-size:14px;padding:clamp(44px,6vw,72px) 0 0;}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px;padding-bottom:40px;}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:992px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;}}
.site-footer h4{color:#fff;font-size:15.5px;margin-bottom:16px;font-weight:700;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{background:rgba(255,255,255,.12);box-shadow:none;}
.footer-brand span{color:#fff;font-size:18px;font-weight:700;}
.site-footer p{color:#9FB4CC;font-size:13.5px;line-height:1.85;}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a{color:#C6D4E6;font-size:13.5px;display:inline-block;}
.footer-links a:hover{color:#fff;transform:translateX(2px);}
.footer-contact li{font-size:13.5px;color:#9FB4CC;margin-bottom:10px;display:flex;gap:9px;}
.footer-contact svg{width:16px;height:16px;flex:0 0 auto;margin-top:5px;color:#7FA3CC;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:20px 0;
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:#8FA6C0;
}
.footer-bottom a{color:#8FA6C0;}
.footer-bottom a:hover{color:#fff;}

@media (max-width:575px){
  body{font-size:15.5px;}
  .btn{width:100%;}
  .hero-actions .btn{width:100%;}
  .header-actions{gap:8px;}
  .cta-inner .btn{width:100%;}
}

/* roulang page: article */
:root{
  --bs-primary:#1C4E93;
  --bs-body-color:#16202E;
  --bs-body-bg:#F4F7FB;
  --bs-border-radius:14px;
  --bs-font-sans-serif:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --c-primary:#1C4E93;
  --c-primary-dark:#123A70;
  --c-primary-soft:#E8EFFA;
  --c-accent:#F26A2E;
  --c-accent-dark:#D8551C;
  --c-green:#2E9E7E;
  --c-bg:#F4F7FB;
  --c-card:#FFFFFF;
  --c-line:#E3E9F2;
  --c-text:#16202E;
  --c-text-2:#5B6B80;
  --c-text-3:#8A97A8;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-badge:6px;
  --shadow-card:0 6px 24px rgba(22,32,46,.06);
  --shadow-hover:0 14px 34px rgba(22,32,46,.10);
  --section-y:clamp(56px,8vw,104px);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--bs-font-sans-serif);
  font-size:16px;
  line-height:1.8;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease,background-color .2s ease,transform .2s ease}
a:hover{color:var(--c-primary-dark)}
h1,h2,h3,h4{letter-spacing:-.01em;margin:0;line-height:1.35;font-weight:700;color:var(--c-text)}
p{margin:0 0 16px}
ul,ol{margin:0 0 16px;padding-left:22px}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
@media (min-width:992px){.container{padding-left:32px;padding-right:32px}}
@media (min-width:1400px){.container{max-width:1320px}}
.btn-primary{
  --bs-btn-bg:var(--c-primary);
  --bs-btn-border-color:var(--c-primary);
  --bs-btn-hover-bg:var(--c-primary-dark);
  --bs-btn-hover-border-color:var(--c-primary-dark);
  --bs-btn-active-bg:var(--c-primary-dark);
  --bs-btn-active-border-color:var(--c-primary-dark);
  --bs-btn-focus-shadow-rgb:28,78,147;
  --bs-btn-border-radius:10px;
}
.card{--bs-card-border-color:var(--c-line);--bs-card-border-radius:var(--radius-card);box-shadow:var(--shadow-card)}

/* ---------- 按钮体系 ---------- */
.btn-c{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:background-color .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.btn-c svg{width:18px;height:18px;flex:0 0 auto}
.btn-c.solid{background:var(--c-primary);color:#fff;box-shadow:0 6px 18px rgba(28,78,147,.18)}
.btn-c.solid:hover{background:var(--c-primary-dark);color:#fff;transform:translateY(-2px)}
.btn-c.ghost{background:#fff;color:var(--c-primary);border-color:#C9D9F0}
.btn-c.ghost:hover{background:var(--c-primary-soft);color:var(--c-primary-dark);transform:translateY(-2px)}
.btn-c.accent{background:var(--c-accent);color:#fff;border-radius:999px;box-shadow:0 8px 20px rgba(242,106,46,.22)}
.btn-c.accent:hover{background:var(--c-accent-dark);color:#fff;transform:translateY(-2px) scale(1.02)}
.btn-c:active{transform:translateY(0)}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(255,255,255,.96);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:box-shadow .2s ease,border-color .2s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--c-line);box-shadow:0 4px 18px rgba(22,32,46,.06)}
.header-inner{display:flex;align-items:center;gap:14px;min-height:74px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--c-text)}
.brand:hover{color:var(--c-primary)}
.brand-mark{
  width:40px;height:40px;border-radius:12px;background:var(--c-primary);color:#fff;
  display:grid;place-items:center;flex:0 0 auto;box-shadow:0 6px 16px rgba(28,78,147,.22);
}
.brand-mark svg{width:22px;height:22px}
.brand-text{font-size:19px;font-weight:700;letter-spacing:-.01em;white-space:nowrap}
.main-nav{display:none;align-items:center;gap:4px;margin-left:auto}
@media (min-width:992px){.main-nav{display:flex}}
.nav-pill{
  display:inline-flex;align-items:center;min-height:42px;padding:0 16px;
  border-radius:999px;font-size:15px;font-weight:500;color:var(--c-text-2);
}
.nav-pill:hover{background:var(--c-primary-soft);color:var(--c-primary)}
.nav-pill.active{background:var(--c-primary-soft);color:var(--c-primary);font-weight:600}
.header-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
@media (min-width:992px){.header-actions{margin-left:14px}}
.nav-toggle{
  display:grid;place-items:center;width:46px;height:46px;border-radius:12px;
  background:#fff;border:1px solid var(--c-line);color:var(--c-primary);cursor:pointer;
  transition:background-color .2s ease,border-color .2s ease;
}
.nav-toggle:hover{background:var(--c-primary-soft);border-color:#C9D9F0}
.nav-toggle svg{width:22px;height:22px}
@media (min-width:992px){.nav-toggle{display:none}}
.mobile-drawer{display:none;border-top:1px solid var(--c-line);background:#fff}
.mobile-drawer.open{display:block}
.drawer-inner{padding:16px 20px 24px;display:flex;flex-direction:column;gap:10px}
.drawer-pill{
  display:flex;align-items:center;min-height:52px;padding:0 18px;border-radius:12px;
  background:var(--c-bg);color:var(--c-text);font-size:16px;font-weight:600;
}
.drawer-pill:hover{background:var(--c-primary-soft);color:var(--c-primary)}
.drawer-pill.active{background:var(--c-primary-soft);color:var(--c-primary)}
.drawer-cta{margin-top:6px}

/* ---------- 面包屑 ---------- */
.crumb-wrap{padding-top:26px}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--c-text-3)}
.crumb a{color:var(--c-text-2)}
.crumb a:hover{color:var(--c-primary)}
.crumb-sep{color:#B7C3D4}
.crumb-current{color:var(--c-text-2);max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- 文章头部 ---------- */
.article-head{padding:20px 0 30px}
.article-head h1{
  font-size:clamp(28px,3.9vw,44px);
  line-height:1.3;
  max-width:900px;
  margin-bottom:18px;
}
.head-deco{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.head-deco span{display:block;height:4px;border-radius:999px;background:var(--c-accent)}
.head-deco span:first-child{width:34px}
.head-deco span:last-child{width:12px;background:#C9D9F0}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:12px;font-size:14px;color:var(--c-text-3)}
.badge-cat{
  display:inline-flex;align-items:center;min-height:28px;padding:0 12px;
  border-radius:var(--radius-badge);background:var(--c-primary-soft);color:var(--c-primary);
  font-size:13px;font-weight:600;
}
.meta-dot{width:4px;height:4px;border-radius:50%;background:#C4CFDE}
.cover-figure{margin:0 0 8px;border-radius:18px;overflow:hidden;background:#fff;box-shadow:var(--shadow-card);border:1px solid var(--c-line)}
.cover-figure img{width:100%;aspect-ratio:16/9;object-fit:cover}
.cover-cap{padding:12px 20px;font-size:13px;color:var(--c-text-3);text-align:center;background:#fff}

/* ---------- 文章布局 ---------- */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:36px;padding-bottom:var(--section-y)}
@media (min-width:1200px){.article-layout{grid-template-columns:minmax(0,1fr) 300px;gap:42px}}
.article-main{min-width:0}
.article-shell{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);padding:28px 22px;
}
@media (min-width:768px){.article-shell{padding:40px 44px}}
.article-content{max-width:780px;font-size:16px;line-height:1.9;color:var(--c-text)}
.article-content > *:first-child{margin-top:0}
.article-content p{margin:0 0 20px;color:#22303F}
.article-content h2{
  font-size:clamp(21px,2.4vw,26px);
  margin:38px 0 16px;padding-left:14px;position:relative;
}
.article-content h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:4px;background:var(--c-primary);
}
.article-content h3{
  font-size:19px;font-weight:600;margin:28px 0 12px;color:var(--c-primary-dark);
}
.article-content ul,.article-content ol{margin:0 0 20px;padding-left:24px}
.article-content li{margin-bottom:10px}
.article-content blockquote{
  margin:22px 0;padding:18px 22px;background:var(--c-primary-soft);
  border-left:4px solid var(--c-primary);border-radius:0 12px 12px 0;color:var(--c-text-2);
}
.article-content blockquote p:last-child{margin-bottom:0}
.article-content img{
  border-radius:12px;margin:22px auto;box-shadow:var(--shadow-card);
}
.article-content figure{margin:22px 0}
.article-content figcaption{font-size:13px;color:var(--c-text-3);text-align:center;margin-top:10px}
.article-content table{width:100%;border-collapse:collapse;font-size:14.5px;margin:22px 0}
.article-content table th,.article-content table td{border:1px solid var(--c-line);padding:10px 14px;text-align:left}
.article-content table th{background:var(--c-primary-soft);color:var(--c-primary-dark);font-weight:600}
.article-content pre{
  background:#0F1B2D;color:#D9E4F5;padding:18px;border-radius:12px;
  overflow-x:auto;font-size:13.5px;line-height:1.7;margin:22px 0;
}
.article-content code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
.article-content a{color:var(--c-primary);text-decoration:underline;text-decoration-color:#B9CDE9;text-underline-offset:3px}
.article-content a:hover{color:var(--c-accent);text-decoration-color:var(--c-accent)}
.table-scroll{overflow-x:auto;margin:22px 0;background:#FAFCFF;border:1px solid var(--c-line);border-radius:12px;padding:4px}

/* ---------- 空态 ---------- */
.article-empty{text-align:center;padding:56px 20px;max-width:520px;margin:0 auto}
.article-empty svg{width:56px;height:56px;color:#B9C7DA;margin:0 auto 18px}
.article-empty h2{font-size:20px;margin-bottom:10px}
.article-empty p{color:var(--c-text-2);margin-bottom:22px}

/* ---------- 侧栏 ---------- */
.article-side{display:none}
@media (min-width:1200px){.article-side{display:block}}
.side-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);padding:22px;margin-bottom:22px;
}
.side-card h3{font-size:16px;margin-bottom:14px}
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px}
.tag-pill{
  display:inline-flex;align-items:center;min-height:32px;padding:0 12px;border-radius:999px;
  background:var(--c-bg);border:1px solid var(--c-line);color:var(--c-text-2);font-size:13px;
}
.tag-pill:hover{background:var(--c-primary-soft);border-color:#C9D9F0;color:var(--c-primary)}
.side-list{list-style:none;margin:0;padding:0}
.side-list li{padding:10px 0;border-bottom:1px dashed var(--c-line);font-size:14px}
.side-list li:last-child{border-bottom:0;padding-bottom:0}
.side-list a{color:var(--c-text-2);display:block}
.side-list a:hover{color:var(--c-primary);transform:translateX(2px)}
.side-note{font-size:13px;color:var(--c-text-3);margin:10px 0 0}

/* ---------- 相关推荐 ---------- */
.rec-section{padding-top:var(--section-y);padding-bottom:0}
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:26px}
.sec-head h2{font-size:clamp(22px,2.6vw,30px)}
.sec-head p{color:var(--c-text-2);font-size:14.5px;margin:6px 0 0}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600}
.link-more svg{width:16px;height:16px}
.rec-grid{display:grid;grid-template-columns:1fr;gap:22px}
@media (min-width:768px){.rec-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
.rec-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);overflow:hidden;display:flex;flex-direction:column;
  transition:transform .2s ease,box-shadow .2s ease;height:100%;
}
.rec-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.rec-card img{width:100%;aspect-ratio:16/10;object-fit:cover}
.rec-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.rec-body h3{font-size:17px;line-height:1.5}
.rec-body p{font-size:14px;color:var(--c-text-2);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rec-meta{display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--c-text-3);margin-top:auto}
.rec-arrow{width:30px;height:30px;border-radius:50%;display:grid;place-items:center;background:var(--c-primary-soft);color:var(--c-primary)}
.rec-arrow svg{width:15px;height:15px}

/* ---------- 上/下篇 ---------- */
.post-nav{display:grid;grid-template-columns:1fr;gap:14px;margin-top:34px}
@media (min-width:768px){.post-nav{grid-template-columns:1fr 1fr}}
.post-link{
  display:flex;flex-direction:column;gap:6px;padding:20px 22px;border-radius:var(--radius-card);
  background:#fff;border:1px solid var(--c-line);box-shadow:var(--shadow-card);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.post-link:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#C9D9F0}
.post-link .pl-label{font-size:13px;color:var(--c-text-3)}
.post-link .pl-title{font-size:16px;font-weight:600;color:var(--c-text)}
.post-link.disabled{background:var(--c-bg);box-shadow:none;border-style:dashed;cursor:default}
.post-link.disabled .pl-title{color:var(--c-text-3);font-weight:500}
.post-link.disabled:hover{transform:none;box-shadow:none;border-color:var(--c-line)}
.post-link.right{text-align:right;align-items:flex-end}

/* ---------- 转化条 ---------- */
.cta-strip{padding-top:var(--section-y)}
.cta-inner{
  background:var(--c-primary-soft);border:1px solid #D3E1F6;border-radius:18px;
  padding:32px 26px;display:flex;flex-direction:column;gap:20px;align-items:flex-start;
}
@media (min-width:768px){
  .cta-inner{flex-direction:row;align-items:center;justify-content:space-between;padding:38px 44px}
}
.cta-inner h2{font-size:clamp(20px,2.4vw,27px);margin-bottom:8px}
.cta-inner p{color:var(--c-text-2);font-size:15px;margin:0;max-width:620px}

/* ---------- 页脚 ---------- */
.site-footer{background:#0F1B2D;color:#C3CFDF;margin-top:var(--section-y);padding:56px 0 24px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:34px}
@media (min-width:768px){.footer-grid{grid-template-columns:1fr 1fr}}
@media (min-width:992px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px}}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:700;color:#fff;margin-bottom:14px}
.footer-brand .brand-mark{background:rgba(255,255,255,.12);box-shadow:none}
.site-footer p{font-size:14px;color:#9FB0C6;line-height:1.85;margin:0}
.site-footer h4{font-size:15px;color:#fff;margin-bottom:14px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{color:#A9B9CE;font-size:14px;display:inline-flex;transition:color .2s ease,transform .2s ease}
.footer-links a:hover{color:#7FA9E4;transform:translateX(2px)}
.footer-contact{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:12px}
.footer-contact li{display:flex;gap:10px;font-size:14px;color:#A9B9CE;line-height:1.7}
.footer-contact svg{width:18px;height:18px;flex:0 0 auto;margin-top:4px;color:#7FA9E4}
.footer-bottom{
  margin-top:36px;padding-top:18px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:13px;color:#8A9BB2;
}

/* ---------- 响应式细节 ---------- */
@media (max-width:575px){
  .brand-text{font-size:17px}
  .article-shell{padding:22px 16px;border-radius:12px}
  .article-head h1{font-size:26px}
  .article-content{font-size:15.5px}
  .cta-inner{padding:26px 20px}
  .rec-body{padding:18px}
}
@media (max-width:767px){
  .post-link.right{text-align:left;align-items:flex-start}
}

/* roulang page: category1 */
:root{
  --bs-primary:#1C4E93;
  --bs-body-color:#16202E;
  --bs-body-bg:#F4F7FB;
  --bs-border-radius:14px;
  --bs-font-sans-serif:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --rl-primary:#1C4E93;
  --rl-primary-dark:#123A70;
  --rl-primary-soft:#E8EFFA;
  --rl-accent:#F26A2E;
  --rl-accent-dark:#D8551F;
  --rl-green:#2E9E7E;
  --rl-bg:#F4F7FB;
  --rl-card:#FFFFFF;
  --rl-line:#E3E9F2;
  --rl-text:#16202E;
  --rl-text-2:#5B6B80;
  --rl-text-3:#8A97A8;
  --rl-r-card:14px;
  --rl-r-btn:10px;
  --rl-r-badge:6px;
  --rl-shadow:0 6px 24px rgba(22,32,46,.06);
  --rl-shadow-h:0 14px 34px rgba(22,32,46,.10);
  --rl-section:clamp(56px,8vw,104px);
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--bs-font-sans-serif);
  font-size:16px;
  line-height:1.8;
  color:var(--rl-text);
  background:var(--rl-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--rl-primary);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--rl-primary-dark);}
h1,h2,h3,h4{margin:0;letter-spacing:-0.01em;color:var(--rl-text);font-weight:700;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--rl-accent);outline-offset:2px;border-radius:4px;}

/* ============ 通用容器与板块 ============ */
.shell{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 20px;
}
@media(min-width:992px){.shell{padding:0 32px;}}
@media(min-width:1400px){.shell{max-width:1320px;}}
.section{padding:var(--rl-section) 0;}
.section-tight{padding:calc(var(--rl-section) * .7) 0;}
.section-head{max-width:760px;margin-bottom:40px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--rl-primary);
  background:var(--rl-primary-soft);
  border-radius:999px;
  padding:6px 14px;
  margin-bottom:16px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--rl-accent);}
.section-head h2{font-size:clamp(24px,3vw,34px);line-height:1.3;margin-bottom:14px;}
.section-head p{color:var(--rl-text-2);font-size:16px;}
.lead-2{color:var(--rl-text-2);font-size:16px;line-height:1.85;}
.divider{height:1px;background:var(--rl-line);border:0;margin:0;}

/* ============ 按钮 ============ */
.btn-rl{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:11px 24px;
  border-radius:var(--rl-r-btn);
  font-size:15px;font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:all .2s ease;
  white-space:nowrap;
}
.btn-primary-rl{background:var(--rl-primary);color:#fff;box-shadow:0 6px 18px rgba(28,78,147,.18);}
.btn-primary-rl:hover{background:var(--rl-primary-dark);color:#fff;transform:translateY(-2px);box-shadow:0 12px 26px rgba(18,58,112,.24);}
.btn-ghost-rl{background:transparent;color:var(--rl-primary);border-color:rgba(28,78,147,.35);}
.btn-ghost-rl:hover{background:var(--rl-primary-soft);color:var(--rl-primary-dark);border-color:var(--rl-primary);}
.btn-accent-rl{background:var(--rl-accent);color:#fff;border-radius:999px;box-shadow:0 8px 20px rgba(242,106,46,.26);}
.btn-accent-rl:hover{background:var(--rl-accent-dark);color:#fff;transform:translateY(-2px) scale(1.02);}
.btn-block{width:100%;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:rgba(255,255,255,.96);
  backdrop-filter:blur(8px);
  border-bottom:1px solid transparent;
  transition:border-color .2s ease, box-shadow .2s ease;
}
.site-header.is-scrolled{border-bottom:1px solid var(--rl-line);box-shadow:0 6px 20px rgba(22,32,46,.06);}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  min-height:74px;
}
.brand{
  display:flex;align-items:center;gap:10px;
  font-size:19px;font-weight:700;color:var(--rl-text);
  flex-shrink:0;
}
.brand:hover{color:var(--rl-primary);}
.brand-mark{
  width:38px;height:38px;border-radius:11px;
  background:var(--rl-primary);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;
  flex-shrink:0;
}
.brand-mark svg{width:21px;height:21px;}
.main-nav{display:none;align-items:center;gap:6px;}
.nav-pill{
  display:inline-flex;align-items:center;
  min-height:40px;padding:8px 16px;
  border-radius:999px;
  font-size:15px;font-weight:500;color:var(--rl-text-2);
  transition:background .2s ease,color .2s ease;
}
.nav-pill:hover{background:#F1F5FB;color:var(--rl-primary);}
.nav-pill.active{background:var(--rl-primary-soft);color:var(--rl-primary);font-weight:600;}
.header-cta{display:none;}
.nav-toggle{
  display:inline-flex;align-items:center;justify-content:center;
  width:46px;height:46px;border-radius:12px;
  border:1px solid var(--rl-line);background:#fff;color:var(--rl-text);
  cursor:pointer;
}
.nav-toggle svg{width:22px;height:22px;}
@media(min-width:992px){
  .main-nav{display:flex;}
  .header-cta{display:inline-flex;}
  .nav-toggle{display:none;}
}

/* 移动端抽屉 */
.drawer{
  position:fixed;inset:0;z-index:1200;
  background:rgba(22,32,46,.45);
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;
}
.drawer.open{opacity:1;visibility:visible;}
.drawer-panel{
  position:absolute;top:0;right:0;bottom:0;
  width:min(360px,86vw);
  background:#fff;
  padding:22px 20px 26px;
  display:flex;flex-direction:column;gap:14px;
  transform:translateX(100%);transition:transform .28s ease;
  overflow-y:auto;
}
.drawer.open .drawer-panel{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:6px;}
.drawer-close{
  width:42px;height:42px;border-radius:12px;border:1px solid var(--rl-line);
  background:#fff;color:var(--rl-text);cursor:pointer;display:inline-flex;align-items:center;justify-content:center;
}
.drawer-close svg{width:20px;height:20px;}
.drawer .nav-pill{
  width:100%;min-height:52px;justify-content:flex-start;
  padding:12px 18px;border-radius:14px;
  background:#F6F9FD;font-size:16px;
}
.drawer .nav-pill.active{background:var(--rl-primary-soft);color:var(--rl-primary);}
.drawer-foot{margin-top:auto;padding-top:16px;border-top:1px solid var(--rl-line);}

/* ============ 分类头图带 ============ */
.page-banner{
  position:relative;
  min-height:280px;
  display:flex;align-items:center;
  background-image:url("/assets/images/backpic/back-1.png");
  background-size:cover;
  background-position:center 30%;
  overflow:hidden;
}
.page-banner::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(255,255,255,.92) 0%,rgba(232,239,250,.90) 55%,rgba(232,239,250,.74) 100%);
}
.page-banner .shell{position:relative;z-index:2;padding-top:52px;padding-bottom:52px;}
.breadcrumb-rl{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:13.5px;color:var(--rl-text-2);margin-bottom:20px;
}
.breadcrumb-rl a{color:var(--rl-text-2);}
.breadcrumb-rl a:hover{color:var(--rl-primary);}
.breadcrumb-rl .sep{color:var(--rl-text-3);}
.breadcrumb-rl .current{color:var(--rl-primary);font-weight:600;}
.page-banner h1{
  font-size:clamp(30px,4.4vw,52px);
  line-height:1.22;
  max-width:900px;
  margin-bottom:18px;
}
.page-banner h1 em{font-style:normal;color:var(--rl-primary);}
.banner-sub{
  max-width:700px;
  font-size:16px;color:var(--rl-text-2);
  padding-left:16px;
  border-left:3px solid var(--rl-accent);
}
.banner-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}
.tag-pill{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13.5px;font-weight:500;
  color:var(--rl-primary-dark);
  background:rgba(255,255,255,.86);
  border:1px solid var(--rl-line);
  border-radius:999px;
  padding:7px 15px;
}

/* ============ 左标题右内容窄栏 ============ */
.split{display:grid;gap:32px;}
@media(min-width:992px){
  .split{grid-template-columns:300px 1fr;gap:64px;align-items:start;}
}
.split-side h2{font-size:clamp(22px,2.6vw,30px);line-height:1.35;margin-bottom:14px;}
.split-side p{font-size:14.5px;color:var(--rl-text-2);}
.split-side .hint{
  margin-top:20px;padding:14px 16px;
  background:#fff;border:1px solid var(--rl-line);border-left:3px solid var(--rl-primary);
  border-radius:var(--rl-r-badge);
  font-size:13.5px;color:var(--rl-text-2);
}
@media(min-width:992px){
  .split-side{position:sticky;top:104px;}
}
.feature-list{display:grid;gap:18px;}
.feature-item{
  background:var(--rl-card);
  border:1px solid var(--rl-line);
  border-radius:var(--rl-r-card);
  box-shadow:var(--rl-shadow);
  padding:24px 26px;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.feature-item:hover{transform:translateY(-3px);box-shadow:var(--rl-shadow-h);border-color:#D3DEEC;}
.feature-item h3{
  font-size:20px;font-weight:600;
  display:flex;align-items:center;gap:12px;
  margin-bottom:10px;
}
.feature-item h3 .idx{
  width:30px;height:30px;border-radius:9px;
  background:var(--rl-primary-soft);color:var(--rl-primary);
  font-size:14px;font-weight:700;
  display:inline-flex;align-items:center;justify-content:center;flex-shrink:0;
}
.feature-item p{font-size:15px;color:var(--rl-text-2);}

/* ============ 数据条 ============ */
.stat-band{
  background:#fff;border-top:1px solid var(--rl-line);border-bottom:1px solid var(--rl-line);
}
.stat-grid{
  display:grid;grid-template-columns:repeat(2,1fr);gap:1px;
  background:var(--rl-line);
}
@media(min-width:768px){.stat-grid{grid-template-columns:repeat(4,1fr);}}
.stat-cell{background:#fff;padding:30px 22px;}
.stat-num{
  font-size:clamp(26px,3.4vw,38px);font-weight:700;color:var(--rl-primary);
  line-height:1.15;letter-spacing:-0.02em;
}
.stat-num small{font-size:15px;font-weight:600;margin-left:4px;color:var(--rl-text-2);}
.stat-label{margin-top:8px;font-size:13.5px;color:var(--rl-text-2);}

/* ============ 流程步骤 ============ */
.steps{display:grid;gap:20px;}
@media(min-width:768px){.steps{grid-template-columns:repeat(2,1fr);}}
@media(min-width:992px){.steps{grid-template-columns:repeat(4,1fr);}}
.step{
  position:relative;
  background:var(--rl-card);
  border:1px solid var(--rl-line);
  border-radius:var(--rl-r-card);
  padding:26px 24px 24px;
  box-shadow:var(--rl-shadow);
  transition:transform .2s ease,box-shadow .2s ease;
}
.step:hover{transform:translateY(-3px);box-shadow:var(--rl-shadow-h);}
.step-no{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:11px;
  background:var(--rl-primary);color:#fff;font-weight:700;font-size:15px;
  margin-bottom:16px;
}
.step h3{font-size:19px;font-weight:600;margin-bottom:10px;}
.step p{font-size:14.5px;color:var(--rl-text-2);}
.step .dur{
  display:inline-block;margin-top:14px;
  font-size:13px;font-weight:600;color:var(--rl-green);
  background:rgba(46,158,126,.10);
  border-radius:var(--rl-r-badge);
  padding:4px 10px;
}

/* ============ 场景卡 ============ */
.scene-grid{display:grid;gap:24px;}
@media(min-width:768px){.scene-grid{grid-template-columns:repeat(2,1fr);}}
@media(min-width:992px){.scene-grid{grid-template-columns:repeat(3,1fr);}}
.scene-card{
  background:var(--rl-card);
  border:1px solid var(--rl-line);
  border-radius:var(--rl-r-card);
  box-shadow:var(--rl-shadow);
  overflow:hidden;
  display:flex;flex-direction:column;
  transition:transform .2s ease,box-shadow .2s ease;
}
.scene-card:hover{transform:translateY(-3px);box-shadow:var(--rl-shadow-h);}
.scene-media{position:relative;aspect-ratio:16/10;overflow:hidden;background:#DCE6F4;}
.scene-media img{width:100%;height:100%;object-fit:cover;}
.scene-media .badge-rl{
  position:absolute;top:14px;left:14px;
  background:rgba(255,255,255,.94);
  color:var(--rl-primary);
  font-size:12.5px;font-weight:600;
  border-radius:var(--rl-r-badge);
  padding:5px 11px;
}
.scene-body{padding:22px 24px 26px;display:flex;flex-direction:column;gap:10px;flex:1;}
.scene-body h3{font-size:19px;font-weight:600;}
.scene-body p{font-size:14.5px;color:var(--rl-text-2);}
.scene-body .meta{
  margin-top:auto;padding-top:14px;border-top:1px dashed var(--rl-line);
  font-size:13px;color:var(--rl-text-3);
  display:flex;align-items:center;justify-content:space-between;gap:10px;
}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--rl-primary);
}
.link-arrow::after{content:"→";transition:transform .2s ease;}
.link-arrow:hover::after{transform:translateX(3px);}

/* ============ 交付清单 ============ */
.deliver{
  background:var(--rl-primary-soft);
  border-radius:18px;
  padding:clamp(28px,4vw,48px);
}
.deliver-grid{display:grid;gap:20px;}
@media(min-width:768px){.deliver-grid{grid-template-columns:repeat(2,1fr);}}
.deliver-item{
  background:#fff;border-radius:var(--rl-r-card);
  border:1px solid rgba(28,78,147,.10);
  padding:22px 24px;
  display:flex;gap:16px;align-items:flex-start;
}
.deliver-item .ico{
  width:42px;height:42px;border-radius:12px;flex-shrink:0;
  background:var(--rl-primary-soft);color:var(--rl-primary);
  display:inline-flex;align-items:center;justify-content:center;
}
.deliver-item .ico svg{width:21px;height:21px;}
.deliver-item h3{font-size:17.5px;font-weight:600;margin-bottom:6px;}
.deliver-item p{font-size:14px;color:var(--rl-text-2);}

/* ============ FAQ ============ */
.faq-wrap{max-width:880px;margin:0 auto;}
.faq-item{
  background:#fff;
  border:1px solid var(--rl-line);
  border-radius:var(--rl-r-card);
  margin-bottom:14px;
  overflow:hidden;
  transition:box-shadow .2s ease,border-color .2s ease;
}
.faq-item[open]{border-color:#CFDCEF;box-shadow:var(--rl-shadow);}
.faq-item summary{
  list-style:none;cursor:pointer;
  padding:20px 24px;
  font-size:16.5px;font-weight:600;color:var(--rl-text);
  display:flex;align-items:flex-start;gap:12px;
  position:relative;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary .q-no{
  color:var(--rl-primary);font-weight:700;flex-shrink:0;
}
.faq-item summary .chev{
  margin-left:auto;flex-shrink:0;color:var(--rl-text-3);
  transition:transform .2s ease;
}
.faq-item summary .chev svg{width:18px;height:18px;display:block;}
.faq-item[open] summary .chev{transform:rotate(180deg);color:var(--rl-primary);}
.faq-item[open] summary{background:#F7FAFE;border-left:4px solid var(--rl-accent);padding-left:20px;}
.faq-body{
  padding:4px 24px 22px;
  font-size:15px;color:var(--rl-text-2);
  border-left:4px solid transparent;
}
.faq-item[open] .faq-body{border-left:4px solid var(--rl-accent);padding-left:20px;}

/* ============ 相关分类胶囊 ============ */
.relate{
  background:#fff;border:1px solid var(--rl-line);
  border-radius:18px;padding:clamp(26px,3.4vw,38px);
  display:flex;flex-wrap:wrap;gap:24px;align-items:center;justify-content:space-between;
}
.relate h2{font-size:20px;font-weight:600;}
.relate .pills{display:flex;flex-wrap:wrap;gap:10px;}
.pill-link{
  display:inline-flex;align-items:center;
  min-height:44px;padding:9px 20px;
  border-radius:999px;
  border:1px solid var(--rl-line);
  background:#F7FAFE;
  font-size:14.5px;font-weight:500;color:var(--rl-text-2);
  transition:all .2s ease;
}
.pill-link:hover{background:var(--rl-primary-soft);color:var(--rl-primary);border-color:rgba(28,78,147,.28);transform:translateY(-2px);}
.pill-link.current{background:var(--rl-primary);color:#fff;border-color:var(--rl-primary);}

/* ============ 转化条 ============ */
.cta-band{
  background:var(--rl-primary-soft);
  border:1px solid rgba(28,78,147,.12);
  border-radius:18px;
  padding:clamp(28px,4vw,46px);
  display:flex;flex-wrap:wrap;gap:24px;
  align-items:center;justify-content:space-between;
}
.cta-band h2{font-size:clamp(21px,2.6vw,28px);line-height:1.4;margin-bottom:8px;}
.cta-band p{font-size:14.5px;color:var(--rl-text-2);}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ============ 页脚 ============ */
.site-footer{
  background:#0F2A50;
  color:#C9D7EA;
  padding:clamp(48px,6vw,72px) 0 0;
  margin-top:var(--rl-section);
}
.footer-grid{display:grid;gap:34px;}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr);}}
@media(min-width:992px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.3fr;gap:40px;}}
.footer-brand{
  display:flex;align-items:center;gap:10px;
  font-size:18px;font-weight:700;color:#fff;margin-bottom:16px;
}
.footer-brand .brand-mark{background:rgba(255,255,255,.12);color:#fff;}
.site-footer p{font-size:14px;line-height:1.85;color:#A9BDD6;}
.site-footer h4{
  font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;
}
.footer-links{display:grid;gap:10px;}
.footer-links a{
  font-size:14px;color:#A9BDD6;
  transition:color .2s ease,transform .2s ease;
  display:inline-block;
}
.footer-links a:hover{color:#fff;transform:translateX(2px);}
.footer-contact{display:grid;gap:12px;}
.footer-contact li{
  font-size:14px;color:#A9BDD6;
  display:flex;gap:10px;align-items:flex-start;line-height:1.7;
}
.footer-contact svg{width:18px;height:18px;flex-shrink:0;margin-top:4px;color:#7FA6D8;}
.footer-bottom{
  margin-top:44px;padding:22px 0;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:10px;
  align-items:center;justify-content:space-between;
  font-size:13px;color:#8FA5C2;
}

@media(max-width:575px){
  body{font-size:15.5px;}
  .page-banner{min-height:240px;}
  .stat-cell{padding:24px 18px;}
  .cta-band,.relate{border-radius:16px;}
}

/* roulang page: category2 */
:root{
  --bs-primary:#1C4E93;
  --bs-body-color:#16202E;
  --bs-body-bg:#F4F7FB;
  --bs-border-radius:0.875rem;
  --bs-font-sans-serif:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;

  --primary:#1C4E93;
  --primary-dark:#123A70;
  --primary-light:#E8EFFA;
  --accent:#F26A2E;
  --accent-dark:#D9561E;
  --green:#2E9E7E;
  --bg:#F4F7FB;
  --card:#FFFFFF;
  --line:#E3E9F2;
  --text:#16202E;
  --muted:#5B6B80;
  --weak:#8A97A8;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-badge:6px;
  --shadow-card:0 6px 24px rgba(22,32,46,.06);
  --shadow-hover:0 14px 34px rgba(22,32,46,.10);
  --section-gap:clamp(56px,8vw,104px);
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--bs-font-sans-serif);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--primary);text-decoration:none;transition:color .2s ease,background-color .2s ease,transform .2s ease}
a:hover{color:var(--primary-dark)}
button{font-family:inherit}
h1,h2,h3,h4{letter-spacing:-.01em;color:var(--text);margin:0}
h1{font-size:clamp(30px,4.4vw,52px);font-weight:700;line-height:1.28}
h2{font-size:clamp(24px,3vw,34px);font-weight:700;line-height:1.35}
h3{font-size:20px;font-weight:600;line-height:1.5}
p{margin:0 0 16px}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:20px;
  padding-right:20px;
}
@media (min-width:992px){
  .container{padding-left:32px;padding-right:32px}
}
@media (min-width:1400px){
  .container{max-width:1320px}
}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(255,255,255,.97);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease,background-color .25s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 22px rgba(22,32,46,.08)}
.header-inner{
  display:flex;
  align-items:center;
  gap:20px;
  min-height:72px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:19px;
  font-weight:700;
  color:var(--text);
  white-space:nowrap;
}
.brand:hover{color:var(--primary)}
.brand-mark{
  width:36px;
  height:36px;
  border-radius:11px;
  background:var(--primary);
  color:#fff;
  display:grid;
  place-items:center;
  flex:0 0 auto;
}
.brand-mark svg{width:20px;height:20px}
.main-nav{
  display:none;
  gap:6px;
  margin-left:auto;
  align-items:center;
}
.nav-pill{
  display:inline-flex;
  align-items:center;
  min-height:40px;
  padding:8px 15px;
  border-radius:999px;
  font-size:15px;
  color:var(--muted);
  white-space:nowrap;
}
.nav-pill:hover{background:var(--primary-light);color:var(--primary)}
.nav-pill.active{
  background:var(--primary-light);
  color:var(--primary);
  font-weight:600;
}
.nav-cta{
  display:none;
  align-items:center;
  gap:8px;
  min-height:44px;
  padding:0 20px;
  border-radius:999px;
  background:var(--accent);
  color:#fff;
  font-size:15px;
  font-weight:600;
  white-space:nowrap;
  transition:background-color .2s ease,transform .2s ease;
}
.nav-cta:hover{background:var(--accent-dark);color:#fff;transform:translateY(-2px)}
.nav-cta svg{width:18px;height:18px}
.nav-toggle{
  margin-left:auto;
  width:46px;
  height:46px;
  border:1px solid var(--line);
  border-radius:12px;
  background:#fff;
  display:grid;
  place-content:center;
  gap:4px;
  cursor:pointer;
}
.nav-toggle span{
  display:block;
  width:20px;
  height:2px;
  border-radius:2px;
  background:var(--primary);
  transition:transform .2s ease,opacity .2s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

.mobile-drawer{
  display:none;
  padding:14px 20px 24px;
  border-top:1px solid var(--line);
  background:#fff;
  max-height:calc(100vh - 72px);
  overflow-y:auto;
}
.mobile-drawer.is-open{display:block}
.mobile-drawer a{
  display:flex;
  align-items:center;
  min-height:52px;
  padding:0 18px;
  margin-bottom:10px;
  border-radius:14px;
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  font-weight:600;
}
.mobile-drawer a.active{background:var(--primary-light);color:var(--primary)}
.mobile-drawer .drawer-cta{
  justify-content:center;
  margin-top:14px;
  margin-bottom:0;
  background:var(--accent);
  color:#fff;
}
.mobile-drawer .drawer-cta:hover,.mobile-drawer .drawer-cta:active{background:var(--accent-dark)}

@media (min-width:992px){
  .main-nav{display:flex}
  .nav-cta{display:inline-flex}
  .nav-toggle{display:none}
  .mobile-drawer{display:none !important}
}

/* ============ 头图带 ============ */
.hero-band{
  position:relative;
  padding:clamp(56px,9vw,92px) 0 clamp(48px,7vw,76px);
  background-image:linear-gradient(100deg,rgba(244,247,251,.92) 0%,rgba(244,247,251,.86) 52%,rgba(232,239,250,.90) 100%),
                   url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center right;
  overflow:hidden;
}
.hero-band::after{
  content:"";
  position:absolute;
  right:-80px;
  top:-60px;
  width:340px;
  height:340px;
  border:1px solid rgba(28,78,147,.12);
  border-radius:50%;
  pointer-events:none;
}
.hero-band .container{position:relative;z-index:2}
.crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13.5px;
  color:var(--weak);
  margin-bottom:20px;
}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--primary)}
.crumb .sep{color:#B9C4D4}
.crumb .current{color:var(--text);font-weight:600}
.hero-band h1{max-width:900px;margin-bottom:18px}
.hero-lead{
  max-width:660px;
  font-size:17px;
  color:var(--muted);
  margin-bottom:26px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:48px;
  padding:0 26px;
  border-radius:var(--radius-btn);
  border:1px solid transparent;
  font-size:16px;
  font-weight:600;
  cursor:pointer;
  transition:background-color .2s ease,color .2s ease,transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.btn-primary{
  background:var(--primary);
  color:#fff;
  border-color:var(--primary);
  box-shadow:0 6px 18px rgba(28,78,147,.18);
}
.btn-primary:hover{background:var(--primary-dark);border-color:var(--primary-dark);color:#fff;transform:translateY(-2px)}
.btn-ghost{
  background:transparent;
  color:var(--primary);
  border-color:rgba(28,78,147,.45);
}
.btn-ghost:hover{background:var(--primary-light);color:var(--primary-dark);border-color:var(--primary)}
.btn-accent{
  background:var(--accent);
  color:#fff;
  border-color:var(--accent);
  border-radius:999px;
}
.btn-accent:hover{background:var(--accent-dark);border-color:var(--accent-dark);color:#fff;transform:translateY(-2px) scale(1.02)}
.btn svg{width:18px;height:18px}

/* ============ 通用板块 ============ */
.section{padding:var(--section-gap) 0}
.section-tint{background:var(--primary-light)}
.section-white{background:#fff}
.section-head{max-width:760px;margin-bottom:clamp(28px,4vw,48px)}
.section-head .eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:5px 12px;
  margin-bottom:14px;
  border-radius:var(--radius-badge);
  background:#fff;
  border:1px solid var(--line);
  color:var(--primary);
  font-size:13px;
  font-weight:600;
}
.section-tint .section-head .eyebrow{background:#fff}
.section-head p{color:var(--muted);font-size:16px}

/* ============ 数据条 ============ */
.stat-strip{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:#fff}
.stat-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:0;
}
.stat-item{
  padding:26px 20px;
  border-bottom:1px solid var(--line);
}
.stat-item:last-child{border-bottom:none}
.stat-num{
  font-size:clamp(26px,3.4vw,36px);
  font-weight:700;
  color:var(--primary);
  line-height:1.2;
  letter-spacing:-.01em;
}
.stat-num small{font-size:15px;font-weight:600;margin-left:4px;color:var(--muted)}
.stat-label{font-size:13.5px;color:var(--muted);margin-top:6px}
@media (min-width:576px){
  .stat-grid{grid-template-columns:repeat(2,1fr)}
  .stat-item{border-right:1px solid var(--line)}
  .stat-item:nth-child(2n){border-right:none}
  .stat-item:nth-child(1),.stat-item:nth-child(2){border-bottom:1px solid var(--line)}
  .stat-item:nth-child(3),.stat-item:nth-child(4){border-bottom:none}
}
@media (min-width:992px){
  .stat-grid{grid-template-columns:repeat(4,1fr)}
  .stat-item{padding:30px 26px;border-bottom:none;border-right:1px solid var(--line)}
  .stat-item:nth-child(2n){border-right:1px solid var(--line)}
  .stat-item:last-child{border-right:none}
}

/* ============ 左标题右内容窄栏 ============ */
.split{
  display:grid;
  grid-template-columns:1fr;
  gap:20px;
  padding:32px 0;
  border-bottom:1px solid var(--line);
}
.split:last-of-type{border-bottom:none}
.split-aside h3{
  font-size:20px;
  margin-bottom:10px;
}
.split-aside .index-num{
  display:block;
  font-size:13px;
  font-weight:700;
  letter-spacing:.08em;
  color:var(--accent);
  margin-bottom:10px;
}
.split-body p{color:var(--muted)}
.split-body ul{margin-top:14px;display:grid;gap:10px}
.split-body li{
  position:relative;
  padding-left:22px;
  font-size:15px;
  color:var(--text);
}
.split-body li::before{
  content:"";
  position:absolute;
  left:0;
  top:12px;
  width:8px;
  height:8px;
  border-radius:2px;
  background:var(--primary-light);
  border:1.5px solid var(--primary);
}
@media (min-width:768px){
  .split{grid-template-columns:280px 1fr;gap:48px;padding:40px 0}
}

/* ============ 双栏错位卡 ============ */
.duo{
  display:grid;
  grid-template-columns:1fr;
  gap:22px;
}
.duo-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  overflow:hidden;
  transition:transform .25s ease,box-shadow .25s ease;
}
.duo-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.duo-card figure{margin:0;aspect-ratio:16/9;overflow:hidden}
.duo-card figure img{width:100%;height:100%;object-fit:cover}
.duo-card .duo-body{padding:26px 26px 30px}
.duo-card h3{margin-bottom:10px}
.duo-card p{color:var(--muted);font-size:15px}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}
.tag{
  display:inline-flex;
  align-items:center;
  padding:4px 10px;
  border-radius:var(--radius-badge);
  background:rgba(46,158,126,.12);
  color:#1F7A60;
  font-size:13px;
  font-weight:600;
}
.tag--blue{background:var(--primary-light);color:var(--primary)}
@media (min-width:860px){
  .duo{grid-template-columns:1fr 1fr;gap:26px;align-items:start}
  .duo-card:nth-child(2){margin-top:44px}
}

/* ============ 流程步骤 ============ */
.steps{
  display:grid;
  grid-template-columns:1fr;
  gap:16px;
  counter-reset:step;
}
.step{
  position:relative;
  background:#fff;
  border:1px solid var(--line);
  border-left:4px solid var(--primary-light);
  border-radius:var(--radius-card);
  padding:22px 24px;
  box-shadow:var(--shadow-card);
  transition:border-color .2s ease,transform .2s ease;
}
.step:hover{border-left-color:var(--accent);transform:translateY(-2px)}
.step .step-no{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:30px;
  height:30px;
  border-radius:9px;
  background:var(--primary-light);
  color:var(--primary);
  font-size:14px;
  font-weight:700;
  margin-bottom:12px;
}
.step h3{font-size:18px;margin-bottom:8px}
.step p{font-size:14.5px;color:var(--muted)}
@media (min-width:768px){
  .steps{grid-template-columns:repeat(2,1fr);gap:20px}
}
@media (min-width:1200px){
  .steps{grid-template-columns:repeat(5,1fr)}
  .step{padding:24px 20px}
}

/* ============ 适用对象 ============ */
.audience{
  display:grid;
  grid-template-columns:1fr;
  gap:20px;
}
.audience-item{
  display:flex;
  gap:16px;
  padding:24px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  transition:transform .25s ease,box-shadow .25s ease;
}
.audience-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.audience-icon{
  flex:0 0 auto;
  width:44px;
  height:44px;
  border-radius:12px;
  background:var(--primary-light);
  color:var(--primary);
  display:grid;
  place-items:center;
}
.audience-icon svg{width:22px;height:22px}
.audience-item h3{font-size:18px;margin-bottom:8px}
.audience-item p{font-size:14.5px;color:var(--muted)}
@media (min-width:860px){
  .audience{grid-template-columns:1fr 1fr;gap:22px}
}

/* ============ FAQ ============ */
.faq-wrap{max-width:880px;margin:0 auto}
.faq-item{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  margin-bottom:14px;
  overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item[open]{
  border-color:rgba(28,78,147,.32);
  border-left:4px solid var(--accent);
  box-shadow:var(--shadow-card);
}
.faq-item summary{
  display:flex;
  align-items:flex-start;
  gap:12px;
  padding:20px 22px;
  font-size:16.5px;
  font-weight:600;
  color:var(--text);
  cursor:pointer;
  list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary .q-no{
  color:var(--primary);
  font-weight:700;
  flex:0 0 auto;
}
.faq-item summary .q-arrow{
  margin-left:auto;
  flex:0 0 auto;
  width:20px;
  height:20px;
  color:var(--muted);
  transition:transform .25s ease,color .25s ease;
}
.faq-item[open] summary .q-arrow{transform:rotate(180deg);color:var(--accent)}
.faq-item .faq-body{
  padding:0 22px 22px 48px;
  color:var(--muted);
  font-size:15px;
  background:rgba(232,239,250,.42);
  padding-top:16px;
}

/* ============ 相关分类胶囊 ============ */
.related{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  justify-content:center;
}
.related a{
  display:inline-flex;
  align-items:center;
  min-height:46px;
  padding:0 22px;
  border-radius:999px;
  background:#fff;
  border:1px solid var(--line);
  color:var(--text);
  font-size:15px;
  font-weight:600;
  box-shadow:var(--shadow-card);
  transition:background-color .2s ease,color .2s ease,transform .2s ease,border-color .2s ease;
}
.related a:hover{background:var(--primary-light);color:var(--primary);border-color:rgba(28,78,147,.28);transform:translateY(-2px)}
.related a.is-current{background:var(--primary);border-color:var(--primary);color:#fff}
.related a.is-current:hover{background:var(--primary-dark);color:#fff}

/* ============ 转化条 ============ */
.cta-band{
  background:var(--primary-light);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  padding:clamp(36px,5vw,54px) 0;
}
.cta-inner{
  display:grid;
  grid-template-columns:1fr;
  gap:20px;
  align-items:center;
}
.cta-inner h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:8px}
.cta-inner p{color:var(--muted);font-size:15.5px}
@media (min-width:860px){
  .cta-inner{grid-template-columns:1fr auto;gap:32px}
  .cta-inner .cta-action{justify-self:end}
}

/* ============ 页脚 ============ */
.site-footer{
  background:#123A70;
  color:rgba(255,255,255,.78);
  padding:clamp(46px,6vw,72px) 0 0;
  font-size:14px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:32px;
  padding-bottom:38px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:18px;
  font-weight:700;
  color:#fff;
  margin-bottom:14px;
}
.footer-brand .brand-mark{background:rgba(255,255,255,.14);color:#fff}
.site-footer p{color:rgba(255,255,255,.7);font-size:13.5px;line-height:1.85}
.site-footer h4{
  font-size:15px;
  color:#fff;
  margin-bottom:16px;
  font-weight:600;
}
.footer-links{display:grid;gap:10px}
.footer-links a{
  color:rgba(255,255,255,.76);
  font-size:13.5px;
  display:inline-block;
  transition:color .2s ease,transform .2s ease;
}
.footer-links a:hover{color:#fff;transform:translateX(2px)}
.footer-contact{display:grid;gap:12px}
.footer-contact li{
  display:flex;
  gap:10px;
  align-items:flex-start;
  color:rgba(255,255,255,.76);
  font-size:13.5px;
  line-height:1.7;
}
.footer-contact svg{width:17px;height:17px;flex:0 0 auto;margin-top:4px;color:#8FB4E4}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  justify-content:space-between;
  padding:20px 0 26px;
  border-top:1px solid rgba(255,255,255,.14);
  font-size:13px;
  color:rgba(255,255,255,.62);
}
@media (min-width:768px){
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:28px}
}

/* ============ 其它 ============ */
.eyebrow-plain{
  display:inline-block;
  font-size:13px;
  font-weight:600;
  color:var(--primary);
  background:var(--primary-light);
  padding:5px 12px;
  border-radius:var(--radius-badge);
  margin-bottom:14px;
}
.text-center{text-align:center}
.mb-0{margin-bottom:0}
@media (max-width:575px){
  body{font-size:15.5px}
  .hero-lead{font-size:16px}
  .btn{width:100%}
  .cta-inner .btn{width:100%}
}

/* roulang page: category4 */
:root{
  --bs-primary:#1C4E93;
  --bs-body-color:#16202E;
  --bs-body-bg:#F4F7FB;
  --bs-border-radius:14px;
  --bs-font-sans-serif:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;

  --brand:#1C4E93;
  --brand-dark:#123A70;
  --brand-soft:#E8EFFA;
  --accent:#F26A2E;
  --accent-dark:#D8551D;
  --green:#2E9E7E;
  --bg:#F4F7FB;
  --card:#FFFFFF;
  --line:#E3E9F2;
  --text:#16202E;
  --text-2:#5B6B80;
  --text-3:#8A97A8;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-badge:6px;
  --shadow-card:0 6px 24px rgba(22,32,46,.06);
  --shadow-hover:0 14px 34px rgba(22,32,46,.10);
  --block-y:clamp(56px,8vw,104px);
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--bs-font-sans-serif);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-dark);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;letter-spacing:-.01em;color:var(--text);font-weight:700;line-height:1.35;}
p{margin:0 0 16px;}
ul{margin:0;padding:0;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:20px;
  padding-right:20px;
}
@media (min-width:992px){
  .container{padding-left:32px;padding-right:32px;}
}
@media (min-width:1400px){
  .container{max-width:1320px;}
}

/* ============ 按钮 ============ */
.btn-main,
.btn-ghost,
.btn-cta,
.btn-soft{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:11px 24px;
  border-radius:var(--radius-btn);
  font-size:15.5px;
  font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:background .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.btn-main{background:var(--brand);color:#fff;}
.btn-main:hover{background:var(--brand-dark);color:#fff;transform:translateY(-2px);}
.btn-ghost{background:transparent;color:var(--brand);border-color:#C6D6EE;}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-dark);transform:translateY(-2px);}
.btn-cta{background:var(--accent);color:#fff;border-radius:999px;padding:11px 26px;}
.btn-cta:hover{background:var(--accent-dark);color:#fff;transform:scale(1.02);}
.btn-soft{background:var(--brand-soft);color:var(--brand);border-radius:999px;}
.btn-soft:hover{background:#D8E5F8;color:var(--brand-dark);}
.btn-block{width:100%;}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:1000;
  background:rgba(255,255,255,.96);
  backdrop-filter:saturate(160%) blur(8px);
  border-bottom:1px solid transparent;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.site-header.scrolled{
  border-bottom-color:var(--line);
  box-shadow:0 4px 18px rgba(22,32,46,.06);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:20px;
  min-height:76px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:none;
  color:var(--text);
}
.brand:hover{color:var(--text);}
.brand-mark{
  width:40px;
  height:40px;
  border-radius:12px;
  background:var(--brand-soft);
  color:var(--brand);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  flex:none;
}
.brand-mark svg{width:22px;height:22px;}
.brand-text{
  font-size:19px;
  font-weight:700;
  letter-spacing:-.01em;
  white-space:nowrap;
}
.main-nav{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:auto;
  flex-wrap:wrap;
}
.nav-pill{
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:9px 16px;
  border-radius:999px;
  font-size:15px;
  color:var(--text-2);
  transition:background .2s ease,color .2s ease;
}
.nav-pill:hover{background:var(--brand-soft);color:var(--brand);}
.nav-pill.active{background:var(--brand-soft);color:var(--brand);font-weight:600;}
.header-cta{display:flex;align-items:center;gap:10px;flex:none;}
.nav-toggle{
  display:none;
  width:46px;
  height:46px;
  border-radius:12px;
  border:1px solid var(--line);
  background:#fff;
  color:var(--brand);
  align-items:center;
  justify-content:center;
  cursor:pointer;
}
.nav-toggle svg{width:22px;height:22px;}

.mobile-drawer{
  position:fixed;
  inset:0;
  z-index:1200;
  background:#fff;
  padding:24px 20px 28px;
  display:flex;
  flex-direction:column;
  opacity:0;
  visibility:hidden;
  transform:translateY(-10px);
  transition:opacity .22s ease,transform .22s ease,visibility .22s ease;
}
.mobile-drawer.open{opacity:1;visibility:visible;transform:none;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px;}
.drawer-close{
  width:46px;height:46px;border-radius:12px;border:1px solid var(--line);background:#fff;
  color:var(--text-2);display:inline-flex;align-items:center;justify-content:center;cursor:pointer;
}
.drawer-links{display:flex;flex-direction:column;gap:12px;}
.drawer-links a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:56px;
  padding:14px 20px;
  border-radius:14px;
  background:var(--brand-soft);
  color:var(--brand);
  font-size:17px;
  font-weight:600;
}
.drawer-links a.active{background:var(--brand);color:#fff;}
.drawer-foot{margin-top:auto;padding-top:24px;border-top:1px solid var(--line);}

@media (max-width:991px){
  .main-nav{display:none;}
  .header-cta .btn-cta{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-inner{min-height:68px;}
  .brand-text{font-size:17px;}
  .brand-mark{width:36px;height:36px;border-radius:10px;}
}

/* ============ 分类头图带 ============ */
.page-banner{
  position:relative;
  display:flex;
  align-items:center;
  min-height:280px;
  padding:52px 0 48px;
  background-image:url('/assets/images/backpic/back-3.png');
  background-size:cover;
  background-position:center right;
  overflow:hidden;
}
.page-banner::before{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(112deg,rgba(244,247,251,.93) 0%,rgba(255,255,255,.9) 46%,rgba(232,239,250,.72) 100%);
}
.banner-inner{
  position:relative;
  z-index:1;
  width:100%;
  max-width:680px;
  margin-left:auto;
}
.crumbs{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:13.5px;
  color:var(--text-2);
  margin-bottom:14px;
}
.crumbs a{color:var(--text-2);}
.crumbs a:hover{color:var(--brand);}
.crumbs .sep{color:var(--text-3);}
.crumbs .current{color:var(--text);pointer-events:none;}
.page-banner h1{
  font-size:clamp(28px,3.4vw,40px);
  font-weight:700;
  margin-bottom:16px;
}
.page-banner .lede{
  font-size:16.5px;
  color:var(--text-2);
  margin:0 0 22px;
  max-width:600px;
}
.banner-tags{display:flex;flex-wrap:wrap;gap:10px;}
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:6px 12px;
  border-radius:var(--radius-badge);
  background:#fff;
  border:1px solid var(--line);
  color:var(--text-2);
  font-size:13.5px;
}
.tag-green{background:rgba(46,158,126,.12);border-color:rgba(46,158,126,.25);color:#1F7A60;}
.tag-blue{background:var(--brand-soft);border-color:#CCDDF5;color:var(--brand);}

@media (max-width:767px){
  .page-banner{min-height:240px;padding:40px 0 36px;}
  .banner-inner{max-width:100%;}
}

/* ============ 板块通用 ============ */
.block{padding:var(--block-y) 0;}
.block-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:760px;margin-bottom:clamp(28px,4vw,52px);}
.section-head h2{
  font-size:clamp(24px,3vw,34px);
  margin-bottom:14px;
}
.section-head p{color:var(--text-2);margin:0;font-size:16px;}

/* ============ 概览 ============ */
.split{
  display:grid;
  grid-template-columns:300px 1fr;
  gap:56px;
  align-items:start;
}
.split-side h2{
  font-size:clamp(24px,3vw,32px);
  margin-bottom:14px;
}
.split-side p{color:var(--text-2);font-size:15px;margin:0;}
.split-main p{color:var(--text-2);font-size:16px;}
.stage-list{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:14px 24px;
  margin:22px 0 6px;
  list-style:none;
}
.stage-list li{
  display:flex;
  gap:12px;
  align-items:flex-start;
  background:#fff;
  border:1px solid var(--line);
  border-radius:12px;
  padding:16px 18px;
  font-size:15px;
  color:var(--text-2);
  box-shadow:var(--shadow-card);
}
.stage-list strong{display:block;color:var(--text);font-size:15.5px;margin-bottom:2px;font-weight:600;}
.stage-dot{
  width:10px;height:10px;border-radius:50%;
  background:var(--brand);flex:none;margin-top:8px;
}
.stage-dot.green{background:var(--green);}
.stage-dot.orange{background:var(--accent);}

.metrics{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:0;
  margin-top:32px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-card);
}
.metric{
  padding:24px 22px;
  border-right:1px solid var(--line);
}
.metric:last-child{border-right:none;}
.metric .num{
  font-size:clamp(24px,2.6vw,32px);
  font-weight:700;
  color:var(--brand);
  line-height:1.2;
}
.metric .num span{font-size:15px;font-weight:600;color:var(--text-2);margin-left:4px;}
.metric .lb{font-size:13.5px;color:var(--text-2);margin-top:6px;}

@media (max-width:991px){
  .split{grid-template-columns:1fr;gap:26px;}
  .metrics{grid-template-columns:repeat(2,1fr);}
  .metric{border-bottom:1px solid var(--line);}
  .metric:nth-child(2n){border-right:none;}
  .metric:nth-child(3),.metric:nth-child(4){border-bottom:none;}
  .stage-list{grid-template-columns:1fr;}
}
@media (max-width:575px){
  .metrics{grid-template-columns:1fr;}
  .metric{border-right:none;border-bottom:1px solid var(--line);}
  .metric:last-child{border-bottom:none;}
}

/* ============ 课程错位卡 ============ */
.course-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:24px;
}
.course-col{display:grid;gap:24px;align-content:start;}
.course-col--down{margin-top:38px;}
.course-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:26px 26px 24px;
  box-shadow:var(--shadow-card);
  transition:transform .2s ease,box-shadow .2s ease;
}
.course-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);}
.course-card .badge-line{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:14px;
}
.badge{
  display:inline-flex;
  align-items:center;
  padding:5px 11px;
  border-radius:var(--radius-badge);
  background:var(--brand-soft);
  color:var(--brand);
  font-size:13px;
  font-weight:600;
}
.badge-green{background:rgba(46,158,126,.13);color:#1F7A60;}
.badge-orange{background:rgba(242,106,46,.12);color:#C2500F;}
.course-card h3{
  font-size:20px;
  font-weight:600;
  margin-bottom:10px;
}
.course-card p{color:var(--text-2);font-size:15px;margin-bottom:16px;}
.course-meta{
  display:flex;
  flex-wrap:wrap;
  gap:10px 18px;
  padding-top:14px;
  border-top:1px dashed var(--line);
  font-size:13.5px;
  color:var(--text-3);
}
.course-meta span{display:inline-flex;align-items:center;gap:6px;}
.course-meta svg{width:15px;height:15px;color:var(--brand);flex:none;}

@media (max-width:767px){
  .course-grid{grid-template-columns:1fr;}
  .course-col--down{margin-top:0;}
}

/* ============ 图文区 ============ */
.media-split{
  display:grid;
  grid-template-columns:1.05fr 1fr;
  gap:52px;
  align-items:center;
}
.media-figure{
  position:relative;
  border-radius:18px;
  overflow:hidden;
  box-shadow:var(--shadow-card);
  border:1px solid var(--line);
}
.media-figure img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
}
.media-figure::after{
  content:"";
  position:absolute;
  inset:0;
  border:8px solid rgba(232,239,250,.7);
  border-radius:18px;
  pointer-events:none;
}
.media-body h2{font-size:clamp(24px,3vw,32px);margin-bottom:16px;}
.media-body p{color:var(--text-2);}
.check-list{list-style:none;display:grid;gap:12px;margin-top:20px;}
.check-list li{
  display:flex;
  gap:12px;
  align-items:flex-start;
  font-size:15px;
  color:var(--text-2);
}
.check-list .ico{
  width:24px;height:24px;border-radius:50%;
  background:rgba(46,158,126,.14);
  color:#1F7A60;
  display:inline-flex;align-items:center;justify-content:center;flex:none;margin-top:5px;
}
.check-list .ico svg{width:14px;height:14px;}
.check-list strong{color:var(--text);font-weight:600;}

@media (max-width:991px){
  .media-split{grid-template-columns:1fr;gap:28px;}
}

/* ============ 流程 ============ */
.steps{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
}
.step{
  position:relative;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:26px 24px;
  box-shadow:var(--shadow-card);
  transition:transform .2s ease,box-shadow .2s ease;
}
.step:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);}
.step .num{
  width:38px;height:38px;
  border-radius:11px;
  background:var(--brand-soft);
  color:var(--brand);
  font-weight:700;
  font-size:16px;
  display:inline-flex;align-items:center;justify-content:center;
  margin-bottom:16px;
}
.step h3{font-size:17.5px;font-weight:600;margin-bottom:8px;}
.step p{font-size:14.5px;color:var(--text-2);margin:0;}

@media (max-width:991px){
  .steps{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:575px){
  .steps{grid-template-columns:1fr;}
}

/* ============ FAQ ============ */
.faq{max-width:880px;margin:0 auto;}
.faq details{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  margin-bottom:14px;
  overflow:hidden;
  transition:box-shadow .2s ease,border-color .2s ease;
}
.faq details:hover{border-color:#CFDCEE;}
.faq details[open]{
  border-left:4px solid var(--accent);
  box-shadow:var(--shadow-card);
}
.faq summary{
  display:flex;
  align-items:flex-start;
  gap:14px;
  padding:20px 24px;
  font-size:16.5px;
  font-weight:600;
  color:var(--text);
  cursor:pointer;
  list-style:none;
}
.faq summary::-webkit-details-marker{display:none;}
.faq summary .idx{
  color:var(--brand);
  font-weight:700;
  flex:none;
}
.faq summary .arrow{
  margin-left:auto;
  flex:none;
  color:var(--text-3);
  transition:transform .2s ease,color .2s ease;
}
.faq summary .arrow svg{width:18px;height:18px;display:block;}
.faq details[open] summary .arrow{transform:rotate(180deg);color:var(--accent);}
.faq .ans{
  padding:0 24px 22px 24px;
  color:var(--text-2);
  font-size:15.5px;
  border-top:1px solid var(--line);
  margin-top:0;
  padding-top:18px;
}

/* ============ 相关分类 ============ */
.related-pills{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:22px;
}
.pill-link{
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:11px 22px;
  border-radius:999px;
  background:#fff;
  border:1px solid var(--line);
  color:var(--text-2);
  font-size:15px;
  transition:all .2s ease;
}
.pill-link:hover{
  border-color:#C6D6EE;
  color:var(--brand);
  transform:translateY(-2px);
  box-shadow:var(--shadow-card);
}
.pill-link.current{
  background:var(--brand);
  border-color:var(--brand);
  color:#fff;
  font-weight:600;
}

/* ============ 报名与转化 ============ */
.contact-split{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:52px;
  align-items:start;
}
.contact-split h2{font-size:clamp(24px,3vw,32px);margin-bottom:16px;}
.contact-split p{color:var(--text-2);}
.contact-points{list-style:none;display:grid;gap:14px;margin-top:24px;}
.contact-points li{
  display:flex;gap:12px;align-items:flex-start;
  font-size:15px;color:var(--text-2);
}
.contact-points svg{width:20px;height:20px;color:var(--brand);flex:none;margin-top:4px;}

.form-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:18px;
  padding:28px;
  box-shadow:var(--shadow-card);
}
.form-card h3{font-size:19px;font-weight:600;margin-bottom:6px;}
.form-card .hint{font-size:14px;color:var(--text-3);margin-bottom:20px;}
.field{margin-bottom:16px;}
.field label{
  display:block;
  font-size:14px;
  color:var(--text-2);
  margin-bottom:8px;
}
.field .req{color:var(--accent);margin-left:2px;}
.field input,
.field select{
  width:100%;
  height:46px;
  padding:0 14px;
  font-size:15px;
  color:var(--text);
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-btn);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field input:focus,
.field select:focus{
  outline:none;
  border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(28,78,147,.12);
}
.form-note{font-size:13px;color:var(--text-3);margin:14px 0 0;}

.cta-bar{
  background:var(--brand-soft);
  border:1px solid #D5E3F7;
  border-radius:18px;
  padding:32px 34px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  flex-wrap:wrap;
}
.cta-bar h3{font-size:21px;font-weight:700;margin-bottom:6px;}
.cta-bar p{margin:0;color:var(--text-2);font-size:15px;}

@media (max-width:991px){
  .contact-split{grid-template-columns:1fr;gap:30px;}
  .cta-bar{padding:26px 24px;}
}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--brand-dark);
  color:#C9D6EA;
  padding:64px 0 0;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.3fr;
  gap:40px;
  padding-bottom:40px;
  border-bottom:1px solid rgba(255,255,255,.14);
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  color:#fff;
  font-size:19px;
  font-weight:700;
  margin-bottom:16px;
}
.footer-brand .brand-mark{
  background:rgba(255,255,255,.12);
  color:#fff;
}
.site-footer p{
  font-size:14px;
  color:#B6C7E0;
  margin:0;
  line-height:1.85;
}
.site-footer h4{
  font-size:15px;
  color:#fff;
  font-weight:600;
  margin-bottom:18px;
}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a{
  color:#C9D6EA;
  font-size:14px;
  display:inline-block;
  transition:color .2s ease,transform .2s ease;
}
.footer-links a:hover{color:#fff;transform:translateX(2px);}
.footer-contact{list-style:none;display:flex;flex-direction:column;gap:13px;font-size:14px;color:#C9D6EA;}
.footer-contact li{display:flex;gap:10px;align-items:flex-start;}
.footer-contact svg{
  width:18px;height:18px;flex:none;margin-top:4px;color:#8FB0E0;
}
.footer-bottom{
  display:flex;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding:22px 0 30px;
  font-size:13px;
  color:#9DB4D6;
}
@media (max-width:991px){
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px;}
}
@media (max-width:575px){
  .footer-grid{grid-template-columns:1fr;}
  .site-footer{padding-top:48px;}
}

/* 组件微调 */
::selection{background:rgba(28,78,147,.16);}
.skeleton-note{color:var(--text-3);font-size:13.5px;}

/* roulang page: category3 */
:root{
  --bs-primary:#1C4E93;
  --bs-body-color:#16202E;
  --bs-body-bg:#F4F7FB;
  --bs-border-radius:14px;
  --bs-font-sans-serif:"Noto Sans SC","PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
  --primary:#1C4E93;
  --primary-dark:#123A70;
  --primary-light:#E8EFFA;
  --accent:#F26A2E;
  --accent-dark:#D8551E;
  --green:#2E9E7E;
  --bg:#F4F7FB;
  --card:#FFFFFF;
  --line:#E3E9F2;
  --text:#16202E;
  --muted:#5B6B80;
  --faint:#8A97A8;
  --radius-card:14px;
  --radius-btn:10px;
  --shadow-card:0 6px 24px rgba(22,32,46,.06);
  --shadow-hover:0 14px 34px rgba(22,32,46,.10);
  --section-gap:clamp(56px,8vw,104px);
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--bs-font-sans-serif);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--primary);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--primary-dark)}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
h1,h2,h3,h4{letter-spacing:-.01em;font-weight:700;color:var(--text)}
ul,ol{padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:992px){.container{padding:0 32px}}
@media (min-width:1400px){.container{max-width:1320px}}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(255,255,255,.97);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:box-shadow .25s ease,border-color .25s ease;
}
.site-header.scrolled{border-bottom-color:var(--line);box-shadow:0 6px 22px rgba(22,32,46,.07)}
.header-inner{display:flex;align-items:center;gap:18px;min-height:76px}
.brand{display:inline-flex;align-items:center;gap:11px;font-size:19px;font-weight:700;color:var(--text);flex-shrink:0}
.brand:hover{color:var(--primary)}
.brand-mark{
  width:36px;height:36px;border-radius:11px;
  background:var(--primary-light);color:var(--primary);
  display:inline-flex;align-items:center;justify-content:center;flex-shrink:0;
}
.brand-mark svg{width:21px;height:21px}
.brand-text{white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:auto;flex-wrap:wrap}
.nav-pill{
  display:inline-flex;align-items:center;min-height:40px;
  padding:8px 16px;border-radius:999px;
  font-size:14.5px;font-weight:500;color:var(--muted);
  transition:background .2s ease,color .2s ease;
  white-space:nowrap;
}
.nav-pill:hover{background:var(--primary-light);color:var(--primary)}
.nav-pill.active{background:var(--primary-light);color:var(--primary);font-weight:600}
.header-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}

.btn-accent{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:999px;border:1px solid transparent;
  background:var(--accent);color:#fff;font-size:15px;font-weight:600;
  transition:background .2s ease,transform .2s ease,box-shadow .2s ease;
  white-space:nowrap;
}
.btn-accent:hover{background:var(--accent-dark);color:#fff;transform:scale(1.02)}
.btn-accent svg{width:17px;height:17px}

.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:12px;
  background:var(--primary-light);border:1px solid transparent;color:var(--primary);
  cursor:pointer;
}
.nav-toggle svg{width:20px;height:20px}

.mobile-drawer{max-height:0;overflow:hidden;transition:max-height .3s ease;background:#fff}
.mobile-drawer.open{max-height:560px;border-top:1px solid var(--line)}
.drawer-inner{padding:16px 20px 24px;display:flex;flex-direction:column;gap:10px}
.drawer-inner a{
  display:flex;align-items:center;min-height:48px;padding:12px 18px;
  border-radius:12px;background:#F7FAFF;color:var(--muted);
  font-size:15px;font-weight:500;
}
.drawer-inner a.active{background:var(--primary-light);color:var(--primary);font-weight:600}
.drawer-inner .btn-accent{width:100%;margin-top:6px}

/* ---------- 内页头图带 ---------- */
.page-hero{
  position:relative;
  min-height:280px;
  display:flex;align-items:center;
  background:url('/assets/images/backpic/back-2.png') center 30%/cover no-repeat;
  overflow:hidden;
}
.page-hero::before{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(270deg,rgba(244,247,251,.95) 0%,rgba(244,247,251,.90) 42%,rgba(232,239,250,.80) 100%);
}
.page-hero .container{position:relative;z-index:1}
.hero-inner{max-width:680px;margin-left:auto;text-align:right;padding:58px 0 62px}
.crumb{
  display:flex;justify-content:flex-end;flex-wrap:wrap;gap:8px;
  font-size:13.5px;color:var(--muted);margin-bottom:16px;
}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--primary)}
.crumb .sep{color:var(--faint)}
.crumb .current{color:var(--primary);font-weight:600}
.page-hero h1{
  font-size:clamp(28px,3.6vw,44px);line-height:1.32;margin-bottom:16px;
}
.page-hero h1 em{font-style:normal;color:var(--primary)}
.hero-sub{
  font-size:16.5px;color:var(--muted);max-width:600px;margin-left:auto;
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;justify-content:flex-end;margin-top:22px}
.tag-chip{
  display:inline-flex;align-items:center;min-height:32px;padding:5px 14px;
  border-radius:999px;background:#fff;border:1px solid var(--line);
  font-size:13.5px;color:var(--muted);
}

/* ---------- 通用板块 ---------- */
.section{padding:var(--section-gap) 0}
.section-soft{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:40px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  display:inline-block;font-size:13.5px;font-weight:600;color:var(--primary);
  background:var(--primary-light);border-radius:6px;padding:5px 12px;margin-bottom:16px;
}
.section-head h2{font-size:clamp(24px,3vw,34px);line-height:1.4}
.subtle{color:var(--muted);font-size:15.5px;margin-top:14px}

/* ---------- 左标题右内容 ---------- */
.split{display:grid;grid-template-columns:minmax(260px,360px) 1fr;gap:56px;align-items:start}
.split-left{position:sticky;top:104px}
.split-left h2{font-size:clamp(23px,2.6vw,30px);line-height:1.42;margin-bottom:14px}
.split-left p{color:var(--muted);font-size:15px}
.split-right{display:grid;gap:22px}
@media (max-width:991px){
  .split{grid-template-columns:1fr;gap:26px}
  .split-left{position:static}
}

.check-list{display:grid;grid-template-columns:1fr 1fr;gap:18px 26px}
.check-list li{position:relative;padding-left:32px;font-size:15px;color:var(--muted);line-height:1.75}
.check-list li strong{display:block;color:var(--text);font-size:15.5px;font-weight:600;margin-bottom:2px}
.check-list svg{
  position:absolute;left:0;top:5px;width:20px;height:20px;color:var(--green);
}
@media (max-width:767px){.check-list{grid-template-columns:1fr}}

/* ---------- 关键指标条 ---------- */
.metric-row{
  display:grid;grid-template-columns:repeat(4,1fr);
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);overflow:hidden;
}
.metric{padding:28px 26px;border-right:1px solid var(--line)}
.metric:last-child{border-right:none}
.metric-num{font-size:34px;font-weight:700;color:var(--primary);line-height:1.15}
.metric-num small{font-size:15px;font-weight:600;color:var(--muted);margin-left:3px}
.metric-label{font-size:13.5px;color:var(--faint);margin-top:8px;line-height:1.6}
@media (max-width:767px){
  .metric-row{grid-template-columns:1fr 1fr}
  .metric{border-right:1px solid var(--line);border-bottom:1px solid var(--line)}
  .metric:nth-child(2n){border-right:none}
  .metric:nth-child(3),.metric:nth-child(4){border-bottom:none}
}

/* ---------- 流程 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.step{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:28px 24px;box-shadow:var(--shadow-card);
  transition:transform .25s ease,box-shadow .25s ease;
}
.step:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.step-num{
  width:40px;height:40px;border-radius:11px;background:var(--primary-light);
  color:var(--primary);font-weight:700;font-size:15px;
  display:inline-flex;align-items:center;justify-content:center;margin-bottom:16px;
}
.step h3{font-size:18px;font-weight:600;margin-bottom:10px}
.step p{font-size:14.5px;color:var(--muted);line-height:1.8}
@media (max-width:991px){.steps{grid-template-columns:1fr 1fr}}
@media (max-width:575px){.steps{grid-template-columns:1fr}}

/* ---------- 适用对象 ---------- */
.audience{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center}
.audience-figure{position:relative}
.audience-figure img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:18px;box-shadow:var(--shadow-card);
}
.audience-figure::after{
  content:"";position:absolute;inset:14px -14px -14px 14px;
  border:1px solid #CFDDF2;border-radius:20px;z-index:-1;
}
.audience h2{font-size:clamp(23px,2.6vw,30px);line-height:1.42;margin-bottom:14px}
.audience p{color:var(--muted);font-size:15.5px}
.pill-group{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
.pill{
  display:inline-flex;align-items:center;min-height:40px;padding:8px 18px;
  border-radius:999px;background:var(--primary-light);color:var(--primary);
  font-size:14px;font-weight:500;
}
@media (max-width:991px){
  .audience{grid-template-columns:1fr;gap:30px}
  .audience-figure::after{display:none}
}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:880px;margin:0 auto}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:12px;
  margin-bottom:14px;overflow:hidden;transition:box-shadow .25s ease,border-color .25s ease;
}
.faq-item[open]{border-color:#CBD9EE;box-shadow:var(--shadow-card)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;gap:14px;
  padding:18px 22px 18px 18px;border-left:4px solid transparent;
  font-size:16.5px;font-weight:600;color:var(--text);
  transition:border-color .2s ease,color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:focus{outline:none}
.faq-item summary:focus-visible{outline:2px solid var(--accent);outline-offset:-2px}
.faq-item[open] summary{border-left-color:var(--accent);color:var(--primary)}
.faq-index{
  flex-shrink:0;width:26px;height:26px;border-radius:8px;background:var(--primary-light);
  color:var(--primary);font-size:13px;font-weight:700;
  display:inline-flex;align-items:center;justify-content:center;
}
.faq-item .chev{margin-left:auto;flex-shrink:0;color:var(--faint);transition:transform .25s ease,color .25s ease}
.faq-item .chev svg{width:18px;height:18px;display:block}
.faq-item[open] .chev{transform:rotate(180deg);color:var(--accent)}
.faq-body{padding:0 24px 22px 58px;color:var(--muted);font-size:15px;line-height:1.85}
@media (max-width:575px){
  .faq-body{padding:0 20px 20px 20px}
  .faq-item summary{font-size:15.5px;padding:16px 18px 16px 14px}
}

/* ---------- 相关分类 + 转化条 ---------- */
.related-block{
  background:#fff;border:1px solid var(--line);border-radius:18px;
  padding:32px 34px;box-shadow:var(--shadow-card);margin-bottom:28px;
}
.related-block h2{font-size:20px;font-weight:600;margin-bottom:18px}
.cat-pill{
  display:inline-flex;align-items:center;min-height:44px;padding:10px 22px;
  border-radius:999px;background:#fff;border:1px solid var(--line);
  color:var(--muted);font-size:14.5px;font-weight:500;
  transition:border-color .2s ease,background .2s ease,color .2s ease,transform .2s ease;
}
.cat-pill:hover{border-color:var(--primary);background:var(--primary-light);color:var(--primary);transform:translateY(-2px)}
.cat-pill.current{background:var(--primary);border-color:var(--primary);color:#fff}

.cta-band{
  background:var(--primary-light);border:1px solid #D6E2F6;border-radius:18px;
  padding:34px 36px;display:flex;align-items:center;justify-content:space-between;
  gap:26px;flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(20px,2.2vw,26px);line-height:1.45;margin-bottom:10px}
.cta-band p{color:var(--muted);font-size:15px;max-width:640px}
@media (max-width:575px){
  .related-block{padding:26px 22px}
  .cta-band{padding:28px 22px}
  .cta-band .btn-accent{width:100%}
}

/* ---------- 页脚 ---------- */
.site-footer{background:#0F2B52;color:#C6D4E8;padding:clamp(48px,6vw,72px) 0 0;margin-top:var(--section-gap);font-size:13.5px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:17px;margin-bottom:14px}
.footer-brand .brand-mark{background:rgba(255,255,255,.12);color:#fff}
.site-footer p{color:#9FB4D0;line-height:1.9}
.site-footer h4{color:#fff;font-size:14.5px;font-weight:600;margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:11px}
.footer-links a{color:#9FB4D0;display:inline-block;transition:color .2s ease,transform .2s ease}
.footer-links a:hover{color:#fff;transform:translateX(2px)}
.footer-contact{display:flex;flex-direction:column;gap:13px}
.footer-contact li{display:flex;gap:10px;align-items:flex-start;color:#9FB4D0;line-height:1.75}
.footer-contact svg{width:16px;height:16px;flex-shrink:0;margin-top:5px;color:#7E97B8}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);margin-top:46px;padding:20px 0 24px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  color:#89A0BE;font-size:13px;
}
@media (max-width:991px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:575px){
  .footer-grid{grid-template-columns:1fr}
}

/* ---------- 响应式导航 ---------- */
@media (max-width:991px){
  .main-nav{display:none}
  .header-actions .btn-accent{display:none}
  .nav-toggle{display:inline-flex;margin-left:auto}
  .site-header .header-inner{min-height:66px}
  .brand-text{font-size:17px}
}
@media (min-width:992px){
  .mobile-drawer{display:none}
}

/* ---------- Bootstrap 覆盖 ---------- */
.btn-primary{
  background-color:var(--primary);border-color:var(--primary);
  border-radius:var(--radius-btn);box-shadow:none;
}
.btn-primary:hover,.btn-primary:focus{
  background-color:var(--primary-dark);border-color:var(--primary-dark);
}
.card{border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:none}
a{--bs-link-color:var(--primary);--bs-link-hover-color:var(--primary-dark)}