/* roulang page: index */
:root{
  --blue:#1657E8;
  --blue-dark:#0E47C4;
  --blue-light:#EAF1FF;
  --cyan:#00C2A8;
  --cyan-light:#E3FAF7;
  --orange:#FF7A2F;
  --orange-dark:#E8641B;
  --orange-light:#FFF1E8;
  --bg:#F6F8FC;
  --card:#FFFFFF;
  --alt:#EEF3FB;
  --title:#101A2C;
  --text:#4A5A72;
  --muted:#8A97A8;
  --line:#E2E8F2;
  --danger:#E5484D;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:12px;
  --radius-pill:999px;
  --shadow:0 1px 2px rgba(16,26,44,.04),0 10px 28px rgba(22,87,232,.08);
  --shadow-hover:0 16px 36px rgba(22,87,232,.14);
  --container:1200px;
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Helvetica Neue",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:17px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
img{max-width:100%;display:block;}
a{color:var(--blue);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--blue-dark);}
button,input{font-family:inherit;font-size:inherit;}
button{cursor:pointer;border:0;background:none;color:inherit;}
:focus-visible{outline:3px solid rgba(22,87,232,.35);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.section{padding:96px 0;}
.section-alt{background:var(--alt);}
.section-head{max-width:760px;margin-bottom:40px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.06em;color:var(--blue);
  background:var(--blue-light);border-radius:var(--radius-pill);
  padding:6px 14px;margin-bottom:16px;font-weight:600;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--cyan);}
h1{font-size:40px;line-height:1.2;font-weight:700;color:var(--title);letter-spacing:-.01em;}
h2{font-size:28px;line-height:1.32;font-weight:700;color:var(--title);}
h3{font-size:20px;line-height:1.4;font-weight:600;color:var(--title);}
.section-head p{margin-top:14px;font-size:16px;color:var(--text);}

/* header */
.site-header{background:#fff;position:relative;z-index:60;}
.brand-bar{border-bottom:1px solid var(--line);}
.brand-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:64px;}
.logo{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:700;color:var(--title);}
.logo:hover{color:var(--title);}
.logo-mark{
  width:34px;height:34px;border-radius:10px;background:var(--blue);
  display:inline-flex;align-items:center;justify-content:center;color:#fff;flex:0 0 auto;
}
.logo-mark svg{width:18px;height:18px;}
.logo-text small{display:block;font-size:11px;font-weight:500;color:var(--muted);letter-spacing:.08em;}
.brand-tools{display:flex;align-items:center;gap:12px;}
.icon-btn{
  width:40px;height:40px;border-radius:var(--radius-btn);border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;color:var(--text);background:#fff;
  transition:all .2s ease;
}
.icon-btn:hover{border-color:var(--blue);color:var(--blue);background:var(--blue-light);}
.icon-btn svg{width:18px;height:18px;}
.hotline{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text);}
.hotline strong{color:var(--title);font-weight:600;letter-spacing:.02em;}
.hotline svg{width:16px;height:16px;color:var(--blue);}
.channel-bar{background:var(--blue-light);position:sticky;top:0;z-index:55;transition:box-shadow .25s ease;}
.channel-bar.is-stuck{box-shadow:0 8px 22px rgba(16,26,44,.10);}
.channel-inner{display:flex;align-items:center;gap:10px;height:48px;overflow-x:auto;scrollbar-width:none;}
.channel-inner::-webkit-scrollbar{display:none;}
.channel-link{
  flex:0 0 auto;padding:7px 16px;border-radius:var(--radius-pill);
  font-size:14px;font-weight:500;color:var(--blue-dark);white-space:nowrap;transition:all .2s ease;
}
.channel-link:hover{background:#fff;color:var(--blue);}
.channel-link.active{background:var(--blue);color:#fff;}
.menu-toggle{display:none;}
.nav-drawer{
  display:none;border-top:1px solid var(--line);background:#fff;padding:12px 0 18px;
}
.nav-drawer a{display:block;padding:11px 0;font-size:15px;color:var(--text);border-bottom:1px solid var(--line);}
.nav-drawer a:last-child{border-bottom:0;}
body.drawer-open .nav-drawer{display:block;}
body.drawer-open .menu-toggle{background:var(--blue-light);border-color:var(--blue);color:var(--blue);}

/* buttons */
.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;transition:all .2s ease;border:1.5px solid transparent;
}
.btn svg{width:16px;height:16px;}
.btn-primary{background:var(--orange);color:#fff;box-shadow:0 8px 20px rgba(255,122,47,.26);}
.btn-primary:hover{background:var(--orange-dark);color:#fff;transform:translateY(-2px);}
.btn-blue{background:var(--blue);color:#fff;}
.btn-blue:hover{background:var(--blue-dark);color:#fff;transform:translateY(-2px);}
.btn-ghost{background:#fff;border-color:var(--blue);color:var(--blue);}
.btn-ghost:hover{background:var(--blue-light);color:var(--blue-dark);transform:translateY(-2px);}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px;}
.btn:disabled{background:#D8DEE9;color:#8A97A8;border-color:#D8DEE9;box-shadow:none;cursor:not-allowed;transform:none;}
.link-more{font-weight:600;font-size:14px;text-decoration:underline;text-underline-offset:4px;}
.link-more:hover{color:var(--blue-dark);}

/* hero */
.hero{background:#fff;position:relative;overflow:hidden;}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(transparent 31px,rgba(22,87,232,.06) 32px),linear-gradient(90deg,transparent 31px,rgba(22,87,232,.06) 32px);
  background-size:32px 32px;pointer-events:none;
}
.hero-inner{
  position:relative;display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:center;
  padding:88px 0 96px;
}
.hero-sub{margin-top:18px;font-size:17px;color:var(--text);max-width:520px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-points{display:flex;flex-wrap:wrap;gap:22px;margin-top:30px;font-size:14px;color:var(--muted);}
.hero-points li{display:flex;align-items:center;gap:8px;}
.hero-points svg{width:15px;height:15px;color:var(--cyan);}
.hero-visual{position:relative;}
.hero-visual img{
  width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:var(--radius-card);
  box-shadow:0 20px 50px rgba(16,26,44,.14);
}
.hero-badge{
  position:absolute;left:-18px;bottom:26px;background:#fff;border-radius:var(--radius-card);
  padding:14px 18px;box-shadow:var(--shadow);display:flex;align-items:center;gap:12px;border-left:4px solid var(--cyan);
}
.hero-badge strong{display:block;font-size:20px;color:var(--title);font-weight:700;line-height:1.2;}
.hero-badge span{font-size:13px;color:var(--muted);}

/* value */
.value-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.value-main{
  grid-column:span 2;grid-row:span 2;background:#fff;border-radius:var(--radius-card);
  box-shadow:var(--shadow);padding:28px;display:flex;flex-direction:column;gap:18px;
}
.value-main img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--radius-img);}
.value-main p{font-size:15.5px;}
.value-card{
  background:#fff;border-radius:var(--radius-card);box-shadow:var(--shadow);
  padding:26px;transition:transform .2s ease,box-shadow .2s ease;position:relative;overflow:hidden;
}
.value-card::before{content:"";position:absolute;left:0;top:26px;width:4px;height:26px;border-radius:0 4px 4px 0;background:var(--cyan);}
.value-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);}
.value-card h3{margin-bottom:8px;padding-left:14px;}
.value-card p{font-size:15px;padding-left:14px;}
.value-icon{
  width:44px;height:44px;border-radius:12px;background:var(--blue-light);color:var(--blue);
  display:inline-flex;align-items:center;justify-content:center;margin-bottom:16px;
}
.value-icon svg{width:22px;height:22px;}

/* demo */
.demo-wrap{display:grid;grid-template-columns:4fr 8fr;gap:36px;align-items:start;}
.demo-tabs{display:flex;flex-direction:column;gap:12px;}
.demo-tab{
  text-align:left;background:#fff;border:1px solid var(--line);border-radius:var(--radius-btn);
  padding:16px 18px;transition:all .2s ease;
}
.demo-tab strong{display:block;font-size:16px;color:var(--title);font-weight:600;}
.demo-tab span{display:block;font-size:13px;color:var(--muted);margin-top:4px;}
.demo-tab:hover{border-color:var(--blue);transform:translateX(3px);}
.demo-tab.active{background:var(--blue);border-color:var(--blue);}
.demo-tab.active strong,.demo-tab.active span{color:#fff;}
.demo-panel{
  background:#fff;border-radius:var(--radius-card);box-shadow:var(--shadow);padding:28px;display:none;
}
.demo-panel.active{display:block;}
.demo-panel img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--radius-img);margin-bottom:22px;}
.demo-steps{display:grid;gap:14px;}
.demo-steps li{display:flex;gap:14px;font-size:15.5px;}
.step-num{
  flex:0 0 auto;width:28px;height:28px;border-radius:50%;background:var(--blue-light);color:var(--blue);
  font-size:14px;font-weight:700;display:inline-flex;align-items:center;justify-content:center;
}

/* proof */
.proof-stats{
  display:grid;grid-template-columns:repeat(4,1fr);background:#fff;border-radius:var(--radius-card);
  box-shadow:var(--shadow);overflow:hidden;
}
.proof-item{padding:34px 26px;border-right:1px solid var(--line);}
.proof-item:last-child{border-right:0;}
.proof-item strong{display:block;font-size:38px;line-height:1.1;color:var(--blue);font-weight:700;letter-spacing:-.02em;}
.proof-item span{display:block;margin-top:10px;font-size:15px;color:var(--text);}
.proof-item em{display:block;margin-top:4px;font-size:13px;color:var(--muted);font-style:normal;}
.quote-row{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:28px;}
.quote-card{
  background:#fff;border-radius:var(--radius-card);box-shadow:var(--shadow);padding:28px;
  border-left:4px solid var(--cyan);
}
.quote-card p{font-size:15.5px;color:var(--text);}
.quote-meta{display:flex;align-items:center;gap:10px;margin-top:18px;font-size:14px;color:var(--muted);}
.quote-avatar{
  width:36px;height:36px;border-radius:50%;background:var(--blue-light);color:var(--blue);
  display:inline-flex;align-items:center;justify-content:center;font-weight:700;font-size:14px;
}

/* news */
.news-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.news-card{
  display:flex;flex-direction:column;background:#fff;border-radius:var(--radius-card);
  box-shadow:var(--shadow);overflow:hidden;transition:transform .2s ease,box-shadow .2s ease;color:inherit;
}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);color:inherit;}
.news-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--blue-light);}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.news-card:hover .news-thumb img{transform:scale(1.04);}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.tag{
  align-self:flex-start;font-size:13px;font-weight:600;color:var(--blue);
  background:var(--blue-light);border-radius:var(--radius-pill);padding:3px 12px;
}
.tag-cyan{color:#0A7F72;background:var(--cyan-light);}
.news-body h3{
  font-size:17px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-body p{font-size:14.5px;color:var(--text);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-foot{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--muted);padding-top:12px;border-top:1px solid var(--line);
}
.news-foot svg{width:15px;height:15px;color:var(--blue);}
.empty-state{
  grid-column:1/-1;background:#fff;border-radius:var(--radius-card);box-shadow:var(--shadow);
  padding:56px 24px;text-align:center;
}
.empty-state svg{width:52px;height:52px;color:var(--blue);margin:0 auto 16px;}
.empty-state p{font-size:16px;color:var(--text);margin-bottom:14px;}

/* price */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch;}
.price-card{
  background:#fff;border-radius:var(--radius-card);box-shadow:var(--shadow);padding:30px;
  border:1px solid var(--line);display:flex;flex-direction:column;transition:transform .2s ease,box-shadow .2s ease;
}
.price-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);}
.price-card.featured{border:2px solid var(--blue);position:relative;box-shadow:0 18px 40px rgba(22,87,232,.16);}
.price-badge{
  position:absolute;top:-13px;left:30px;background:var(--orange);color:#fff;font-size:12px;
  font-weight:700;padding:4px 14px;border-radius:var(--radius-pill);letter-spacing:.04em;
}
.price-card h3{font-size:19px;}
.price-value{display:flex;align-items:baseline;gap:8px;margin:14px 0 6px;}
.price-value strong{font-size:32px;color:var(--title);font-weight:700;letter-spacing:-.02em;}
.price-value span{font-size:14px;color:var(--muted);}
.price-card > p{font-size:14.5px;color:var(--muted);margin-bottom:20px;}
.price-list{display:grid;gap:12px;margin-bottom:26px;}
.price-list li{display:flex;gap:10px;font-size:15px;color:var(--text);}
.price-list svg{flex:0 0 auto;width:18px;height:18px;color:var(--cyan);margin-top:4px;}
.price-card .btn{margin-top:auto;width:100%;}
.price-note{margin-top:22px;font-size:14px;color:var(--muted);text-align:center;}

/* faq */
.faq-list{display:grid;gap:14px;}
.faq-item{
  background:#fff;border-radius:var(--radius-card);box-shadow:var(--shadow);
  border:1px solid var(--line);overflow:hidden;
}
.faq-item summary{
  list-style:none;cursor:pointer;padding:18px 24px;display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:17px;font-weight:600;color:var(--title);transition:background .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{background:var(--blue-light);}
.faq-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;background:var(--blue-light);color:var(--blue);
  display:inline-flex;align-items:center;justify-content:center;position:relative;transition:transform .2s ease,background .2s ease;
}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:currentColor;border-radius:2px;}
.faq-icon::before{width:12px;height:2px;}
.faq-icon::after{width:2px;height:12px;transition:opacity .2s ease;}
.faq-item[open] .faq-icon{background:var(--blue);color:#fff;transform:rotate(180deg);}
.faq-item[open] .faq-icon::after{opacity:0;}
.faq-body{padding:0 24px 22px;font-size:16px;color:var(--text);border-top:1px solid var(--line);padding-top:16px;}

/* cta band */
.cta-band{background:#0F1B2D;color:#fff;border-radius:0;padding:72px 0;}
.cta-inner{display:grid;grid-template-columns:8fr 4fr;gap:36px;align-items:center;}
.cta-band h2{color:#fff;}
.cta-band p{color:#B7C3D6;margin-top:14px;font-size:16px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end;}
.cta-actions .btn-ghost{background:transparent;border-color:rgba(255,255,255,.4);color:#fff;}
.cta-actions .btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff;}

/* footer */
.site-footer{background:#0F1B2D;color:#9FB0C6;padding:64px 0 0;padding-bottom:96px;}
.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:36px;}
.footer-brand .logo{color:#fff;font-size:18px;}
.footer-brand .logo-mark{background:var(--blue);}
.footer-brand p{margin-top:16px;font-size:14.5px;color:#9FB0C6;max-width:280px;}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{font-size:14.5px;color:#9FB0C6;}
.footer-col a:hover{color:var(--cyan);}
.footer-contact li{font-size:14.5px;color:#9FB0C6;display:flex;gap:10px;align-items:flex-start;}
.footer-contact svg{width:16px;height:16px;color:var(--cyan);margin-top:5px;flex:0 0 auto;}
.footer-bottom{
  margin-top:48px;border-top:1px solid rgba(255,255,255,.1);padding:22px 0;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13.5px;color:#8A97A8;
}
.footer-bottom a{color:#8A97A8;}
.footer-bottom a:hover{color:var(--cyan);}

/* float cta */
.float-cta{
  position:fixed;right:28px;bottom:28px;z-index:80;opacity:0;visibility:hidden;
  transform:translateY(12px);transition:all .28s ease;
}
.float-cta.show{opacity:1;visibility:visible;transform:translateY(0);}
.float-cta .btn{border-radius:var(--radius-pill);padding:0 26px;box-shadow:0 14px 30px rgba(255,122,47,.32);}
.mobile-bar{display:none;}

@media (max-width:1199px){
  .container{padding:0 20px;}
  .hero-inner{gap:36px;padding:72px 0 84px;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:991px){
  .section{padding:72px 0;}
  h1{font-size:32px;}
  h2{font-size:24px;}
  .hero-inner{grid-template-columns:1fr;padding:56px 0 64px;}
  .hero-visual{order:2;}
  .hero-badge{left:16px;bottom:-18px;}
  .value-grid{grid-template-columns:repeat(2,1fr);}
  .value-main{grid-column:span 2;grid-row:auto;}
  .demo-wrap{grid-template-columns:1fr;}
  .demo-tabs{flex-direction:row;overflow-x:auto;padding-bottom:6px;}
  .demo-tab{min-width:210px;}
  .demo-tab:hover{transform:none;}
  .proof-stats{grid-template-columns:repeat(2,1fr);}
  .proof-item{border-right:0;border-bottom:1px solid var(--line);}
  .proof-item:nth-child(odd){border-right:1px solid var(--line);}
  .proof-item:nth-last-child(-n+2){border-bottom:0;}
  .quote-row{grid-template-columns:1fr;}
  .price-grid{grid-template-columns:1fr;}
  .cta-inner{grid-template-columns:1fr;}
  .cta-actions{justify-content:flex-start;}
  .footer-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:767px){
  body{font-size:16px;}
  .section{padding:56px 0;}
  h1{font-size:28px;line-height:1.28;}
  h2{font-size:22px;line-height:1.34;}
  .brand-inner{height:60px;}
  .hotline{display:none;}
  .menu-toggle{display:inline-flex;}
  .nav-drawer{padding:8px 0 16px;}
  .hero-inner{padding:44px 0 56px;gap:28px;}
  .hero-actions .btn{flex:1 1 auto;}
  .proof-item strong{font-size:30px;}
  .news-grid{grid-template-columns:1fr;}
  .value-grid{grid-template-columns:1fr;}
  .value-main{grid-column:span 1;}
  .site-footer{padding-bottom:112px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .float-cta{display:none;}
  .mobile-bar{
    display:block;position:fixed;left:0;right:0;bottom:0;z-index:85;
    background:#fff;border-top:1px solid var(--line);padding:10px 16px;
    box-shadow:0 -6px 20px rgba(16,26,44,.10);
    opacity:0;visibility:hidden;transform:translateY(100%);transition:all .28s ease;
  }
  .mobile-bar.show{opacity:1;visibility:visible;transform:translateY(0);}
  .mobile-bar .btn{width:100%;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .logo{font-size:16px;}
  .logo-text small{display:none;}
  .hero-badge{position:static;margin-top:18px;left:auto;}
  .demo-panel{padding:20px;}
  .faq-item summary{font-size:16px;padding:16px 18px;}
  .faq-body{padding:14px 18px 18px;}
}

/* roulang page: article */
:root{
  --blue:#1657E8;
  --blue-dark:#0E47C4;
  --blue-soft:#EAF1FF;
  --teal:#00C2A8;
  --orange:#FF7A2F;
  --orange-dark:#F0691E;
  --bg:#F6F8FC;
  --card:#FFFFFF;
  --alt:#EEF3FB;
  --ink:#101A2C;
  --text:#4A5A72;
  --muted:#8A97A8;
  --line:#E2E8F2;
  --r-card:16px;
  --r-btn:10px;
  --r-img:12px;
  --sh-1:0 1px 2px rgba(16,26,44,.04),0 10px 28px rgba(22,87,232,.08);
  --sh-2:0 16px 36px rgba(22,87,232,.14);
  --danger:#E5484D;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:17px;
  line-height:1.8;
}
img{max-width:100%;display:block}
a{color:var(--blue);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--blue-dark)}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;line-height:1.35}
p{margin:0 0 16px}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit}
svg{display:block}
:focus-visible{outline:3px solid rgba(22,87,232,.35);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;border:1.5px solid transparent;cursor:pointer;transition:transform .2s ease,background .2s ease,box-shadow .2s ease,color .2s ease;white-space:nowrap}
.btn-orange{background:var(--orange);color:#fff}
.btn-orange:hover{background:var(--orange-dark);color:#fff;transform:translateY(-2px);box-shadow:0 12px 26px rgba(255,122,47,.28)}
.btn-blue{background:var(--blue);color:#fff}
.btn-blue:hover{background:var(--blue-dark);color:#fff;transform:translateY(-2px);box-shadow:0 12px 26px rgba(22,87,232,.24)}
.btn-ghost{background:#fff;color:var(--blue);border-color:var(--blue)}
.btn-ghost:hover{background:var(--blue-soft);transform:translateY(-2px)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-link{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:15px;text-decoration:underline;text-underline-offset:4px}
.btn[disabled],.btn.is-disabled{background:#D7DEE9;color:#fff;border-color:#D7DEE9;cursor:not-allowed;box-shadow:none;transform:none}

/* ---------- 标签 / 徽章 ---------- */
.tag{display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:999px;背景:none;font-size:13px;font-weight:600;background:var(--blue-soft);color:var(--blue-dark)}
.tag-teal{background:rgba(0,194,168,.12);color:#019983}
.tag-hot{background:rgba(255,122,47,.14);color:#D95F14}
.badge{display:inline-flex;align-items:center;height:22px;padding:0 10px;border-radius:999px;background:var(--orange);color:#fff;font-size:12px;font-weight:700}

/* ---------- 头部导航 ---------- */
.site-header{background:#fff;position:relative;z-index:60}
.brand-bar{border-bottom:1px solid var(--line);background:#fff}
.brand-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:64px}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--ink);font-weight:700}
.logo:hover{color:var(--blue-dark)}
.logo-mark{width:36px;height:36px;border-radius:10px;background:var(--blue);color:#fff;display:flex;align-items:center;justify-content:center;flex:none}
.logo-mark svg{width:20px;height:20px}
.logo-text{font-size:18px;line-height:1.2;display:flex;flex-direction:column}
.logo-text small{display:block;font-size:11px;font-weight:500;color:var(--muted);letter-spacing:.4px}
.brand-tools{display:flex;align-items:center;gap:14px}
.icon-btn{width:38px;height:38px;border-radius:10px;border:1px solid var(--line);background:#fff;color:var(--ink);display:inline-flex;align-items:center;justify-content:center;cursor:pointer;transition:all .2s ease}
.icon-btn:hover{border-color:var(--blue);color:var(--blue);background:var(--blue-soft)}
.icon-btn svg{width:19px;height:19px}
.hotline{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--muted)}
.hotline svg{width:16px;height:16px;color:var(--teal)}
.hotline strong{color:var(--ink);font-weight:700;font-size:14px}
.menu-toggle{display:none}
.nav-drawer{display:none;border-top:1px solid var(--line);background:#fff;padding:8px 0 14px}
.nav-drawer a{display:block;padding:11px 0;font-size:15px;color:var(--ink);border-bottom:1px dashed var(--line)}
.nav-drawer.open{display:block}

.channel-bar{background:var(--blue-soft);position:sticky;top:0;z-index:55;transition:box-shadow .2s ease}
.channel-bar.is-stuck{box-shadow:0 6px 18px rgba(16,26,44,.09)}
.channel-inner{display:flex;align-items:center;gap:8px;height:48px;overflow-x:auto;scrollbar-width:none}
.channel-inner::-webkit-scrollbar{display:none}
.channel-link{flex:none;height:32px;display:inline-flex;align-items:center;padding:0 15px;border-radius:999px;font-size:14px;font-weight:600;color:var(--blue-dark);transition:all .2s ease}
.channel-link:hover{background:#fff;color:var(--blue)}
.channel-link.active{background:var(--blue);color:#fff}
.channel-link.active:hover{background:var(--blue-dark);color:#fff}

/* ---------- 文章头部 ---------- */
.article-head{background:linear-gradient(180deg,#EEF3FB 0%,#F6F8FC 100%);border-bottom:1px solid var(--line);padding:28px 0 40px}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:20px}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--blue)}
.crumb span.sep{color:#C3CDDC}
.crumb .current{color:var(--ink);font-weight:600;max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-head h1{font-size:40px;line-height:1.3;letter-spacing:-.3px;max-width:960px}
.article-head .lead{margin-top:14px;font-size:17px;color:var(--text);max-width:820px}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:20px;font-size:14px;color:var(--muted)}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:#C7D1E0}
.meta-item{display:inline-flex;align-items:center;gap:6px}
.meta-item svg{width:15px;height:15px;color:var(--muted)}
.cover-figure{margin:32px 0 0;border-radius:var(--r-img);overflow:hidden;box-shadow:var(--sh-1);background:var(--alt)}
.cover-figure img{width:100%;aspect-ratio:16/9;object-fit:cover}
.cover-figure figcaption{background:#fff;padding:10px 16px;font-size:13px;color:var(--muted)}

/* ---------- 正文布局 ---------- */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 318px;gap:40px;align-items:start;padding:48px 0 8px}
.article-body{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);padding:38px 42px;max-width:820px;font-size:17px;line-height:1.85;color:var(--text)}
.article-body h2{font-size:26px;margin:36px 0 14px;padding-left:14px;position:relative}
.article-body h2::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:2px;background:var(--teal)}
.article-body h3{font-size:20px;margin:28px 0 10px}
.article-body p{margin:0 0 18px}
.article-body a{color:var(--blue);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:4px}
.article-body a:hover{color:var(--blue-dark);text-decoration-thickness:2px}
.article-body ul,.article-body ol{margin:0 0 18px;padding-left:4px}
.article-body ul li{position:relative;padding-left:22px;margin-bottom:10px}
.article-body ul li::before{content:"";position:absolute;left:4px;top:12px;width:7px;height:7px;border-radius:50%;background:var(--teal)}
.article-body ol{counter-reset:li}
.article-body ol li{position:relative;padding-left:32px;margin-bottom:10px;counter-increment:li}
.article-body ol li::before{content:counter(li);position:absolute;left:0;top:4px;width:22px;height:22px;border-radius:50%;background:var(--blue-soft);color:var(--blue-dark);font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center}
.article-body blockquote{margin:22px 0;padding:16px 22px;background:var(--blue-soft);border-left:4px solid var(--blue);border-radius:0 var(--r-img) var(--r-img) 0;color:var(--ink);font-size:16px}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r-img);margin:20px 0;width:100%;object-fit:cover}
.article-body table{width:100%;border-collapse:collapse;margin:22px 0;font-size:15px;border:1px solid var(--line);border-radius:var(--r-img);overflow:hidden}
.article-body th,.article-body td{border-bottom:1px solid var(--line);padding:12px 14px;text-align:left}
.article-body th{background:var(--alt);color:var(--ink);font-weight:700}
.article-body tbody tr:nth-child(even){background:#FAFCFF}
.article-body code{background:var(--alt);border-radius:6px;padding:2px 6px;font-size:15px;color:var(--blue-dark)}
.empty-state{background:var(--card);border:1px dashed var(--line);border-radius:var(--r-card);padding:56px 28px;text-align:center;max-width:820px}
.empty-state svg{width:64px;height:64px;margin:0 auto 16px;color:#B9C6DA}
.empty-state h3{font-size:20px;margin-bottom:8px}
.empty-state p{color:var(--muted);margin-bottom:18px}

/* ---------- 侧栏 ---------- */
.side{display:flex;flex-direction:column;gap:22px;position:sticky;top:72px}
.side-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);padding:22px}
.side-card h3{font-size:16px;margin-bottom:16px;display:flex;align-items:center;gap:8px}
.side-card h3::before{content:"";width:4px;height:16px;border-radius:2px;background:var(--teal)}
.rank-list li{display:flex;gap:12px;padding:11px 0;border-bottom:1px dashed var(--line)}
.rank-list li:last-child{border-bottom:0;padding-bottom:0}
.rank-num{flex:none;width:24px;height:24px;border-radius:8px;background:var(--alt);color:var(--muted);font-size:13px;font-weight:700;display:flex;align-items:center;justify-content:center}
.rank-list li:nth-child(1) .rank-num{background:var(--orange);color:#fff}
.rank-list li:nth-child(2) .rank-num{background:var(--blue);color:#fff}
.rank-list li:nth-child(3) .rank-num{background:var(--teal);color:#fff}
.rank-list a{display:block;font-size:14.5px;color:var(--ink);line-height:1.55;font-weight:600}
.rank-list a:hover{color:var(--blue)}
.rank-list .rank-meta{font-size:12.5px;color:var(--muted);margin-top:4px}
.side-links a{display:flex;align-items:center;justify-content:space-between;padding:10px 0;font-size:14.5px;color:var(--text);border-bottom:1px dashed var(--line)}
.side-links a:last-child{border-bottom:0}
.side-links a:hover{color:var(--blue)}

/* ---------- 文末 ---------- */
.article-foot{margin-top:26px;max-width:820px}
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;padding:20px 0 0}
.tag-row .label{font-size:14px;color:var(--muted);font-weight:600}
.adjoin{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:24px}
.adjoin a{display:block;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:20px 22px;box-shadow:var(--sh-1);transition:all .2s ease}
.adjoin a:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:#CFE0FF}
.adjoin .dir{font-size:13px;color:var(--muted);font-weight:600;display:flex;align-items:center;gap:6px;margin-bottom:8px}
.adjoin .ttl{font-size:16px;font-weight:700;color:var(--ink);line-height:1.5}
.adjoin a:hover .ttl{color:var(--blue)}
.related{margin-top:44px}
.related-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:20px}
.related-head h2{font-size:22px}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.rcard{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);transition:all .2s ease;display:flex;flex-direction:column}
.rcard:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:#CFE0FF}
.rcard .thumb{position:relative;background:var(--alt)}
.rcard .thumb img{width:100%;aspect-ratio:16/9;object-fit:cover}
.rcard .thumb .tag{position:absolute;left:12px;top:12px;background:#fff}
.rcard .rc-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.rcard h3{font-size:16.5px;line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rcard p{font-size:14.5px;color:var(--muted);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rcard .rc-foot{display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--muted);margin-top:auto;padding-top:6px}
.back-cate{display:inline-flex;align-items:center;gap:8px;margin-top:26px;font-weight:600}

/* ---------- FAQ ---------- */
.faq-section{padding:64px 0 8px}
.faq-section h2{font-size:28px;margin-bottom:8px}
.faq-section .sub{color:var(--muted);font-size:15px;margin-bottom:24px}
.faq-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:last-child{border-bottom:0}
.faq-item summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:56px;padding:16px 24px;font-size:16.5px;font-weight:600;color:var(--ink);transition:background .2s ease}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{background:#FAFCFF}
.faq-item summary .plus{flex:none;width:26px;height:26px;border-radius:50%;background:var(--blue-soft);color:var(--blue);display:flex;align-items:center;justify-content:center;font-size:17px;font-weight:700;transition:transform .25s ease,background .2s ease}
.faq-item[open] summary .plus{transform:rotate(45deg);background:var(--blue);color:#fff}
.faq-item .faq-body{padding:0 24px 18px;font-size:15.5px;color:var(--text);line-height:1.8}

/* ---------- CTA 带 ---------- */
.cta-band{margin:72px 0 0;background:var(--blue);border-radius:20px;padding:44px 46px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:26px;color:#fff}
.cta-band h2{color:#fff;font-size:26px;margin-bottom:8px}
.cta-band p{color:rgba(255,255,255,.86);margin:0;font-size:15.5px;max-width:620px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}
.cta-band .btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.7)}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.14);color:#fff}

/* ---------- 页脚 ---------- */
.site-footer{background:#0F1B2D;color:#A9B6CA;margin-top:88px;padding:60px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:40px}
.footer-brand .logo{color:#fff;margin-bottom:14px}
.footer-brand .logo:hover{color:#fff}
.footer-brand .logo-text{font-size:17px}
.footer-brand p{font-size:14px;line-height:1.8;color:#8E9DB4;margin:0;max-width:320px}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:700}
.footer-col ul li{margin-bottom:10px}
.footer-col ul a{color:#A9B6CA;font-size:14.5px}
.footer-col ul a:hover{color:var(--teal)}
.footer-contact li{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:#A9B6CA}
.footer-contact svg{width:16px;height:16px;flex:none;margin-top:5px;color:var(--teal)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:18px 0 26px;display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;font-size:13.5px;color:#7F8DA4}
.footer-bottom a{color:#A9B6CA}
.footer-bottom a:hover{color:var(--teal)}

/* ---------- 浮动 CTA ---------- */
.float-cta{position:fixed;right:26px;bottom:26px;z-index:80;opacity:0;visibility:hidden;transform:translateY(14px);transition:all .25s ease}
.float-cta.show{opacity:1;visibility:visible;transform:translateY(0)}
.float-cta a{display:inline-flex;align-items:center;gap:10px;height:52px;padding:0 24px;border-radius:999px;background:var(--orange);color:#fff;font-weight:700;font-size:15px;box-shadow:0 14px 30px rgba(255,122,47,.34)}
.float-cta a:hover{background:var(--orange-dark);color:#fff;transform:translateY(-2px)}
.mobile-bar{display:none}

/* ---------- 骨架 / 占位 ---------- */
.skeleton{background:linear-gradient(90deg,#EFF3F9 0%,#E3EAF5 50%,#EFF3F9 100%);background-size:200% 100%;animation:sk 1.3s ease-in-out infinite;border-radius:10px}
@keyframes sk{0%{background-position:200% 0}100%{background-position:-200% 0}}
.img-placeholder{background:var(--blue-soft);color:var(--blue);display:flex;align-items:center;justify-content:center;aspect-ratio:16/9;border-radius:var(--r-img);font-size:14px;font-weight:600}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .article-layout{grid-template-columns:minmax(0,1fr) 288px;gap:30px}
  .article-head h1{font-size:34px}
}
@media (max-width:991px){
  .article-layout{grid-template-columns:1fr;gap:34px;padding-top:36px}
  .side{position:static}
  .article-body{padding:30px 26px;max-width:none}
  .article-head h1{font-size:30px}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .brand-tools .hotline{display:none}
}
@media (max-width:767px){
  body{font-size:16px;line-height:1.8}
  .container{padding:0 16px}
  .brand-inner{height:58px;gap:10px}
  .logo-mark{width:32px;height:32px}
  .logo-text{font-size:15px}
  .menu-toggle{display:inline-flex}
  .brand-tools .btn-blue{display:none}
  .channel-inner{height:46px;padding:0 16px}
  .article-head{padding:20px 0 28px}
  .article-head h1{font-size:26px}
  .article-head .lead{font-size:15.5px}
  .crumb .current{max-width:190px}
  .article-body{padding:22px 18px;font-size:16px;border-radius:14px}
  .article-body h2{font-size:21px}
  .article-body h3{font-size:18px}
  .adjoin{grid-template-columns:1fr}
  .related-grid{grid-template-columns:1fr;gap:16px}
  .related-head h2{font-size:20px}
  .faq-section{padding:48px 0 0}
  .faq-section h2{font-size:22px}
  .faq-item summary{padding:14px 18px;font-size:15.5px}
  .faq-item .faq-body{padding:0 18px 16px;font-size:15px}
  .cta-band{padding:30px 22px;border-radius:16px;margin-top:52px}
  .cta-band h2{font-size:21px}
  .float-cta{display:none}
  .mobile-bar{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:85;background:#fff;border-top:1px solid var(--line);padding:10px 16px calc(10px + env(safe-area-inset-bottom));box-shadow:0 -6px 20px rgba(16,26,44,.09)}
  .mobile-bar .btn{flex:1}
  .site-footer{margin-top:64px;padding-bottom:78px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:22px}
  .footer-brand{grid-column:1 / -1}
}

/* roulang page: category1 */
:root{
  --blue:#1657E8;
  --blue-dark:#0E47C4;
  --blue-light:#EAF1FF;
  --teal:#00C2A8;
  --orange:#FF7A2F;
  --orange-dark:#E8651A;
  --bg:#F6F8FC;
  --card:#FFFFFF;
  --alt:#EEF3FB;
  --title:#101A2C;
  --text:#4A5A72;
  --muted:#8A97A8;
  --border:#E2E8F2;
  --error:#E5484D;
  --r-card:16px;
  --r-btn:10px;
  --r-img:12px;
  --shadow:0 1px 2px rgba(16,26,44,.04),0 10px 28px rgba(22,87,232,.08);
  --shadow-hover:0 16px 36px rgba(22,87,232,.14);
  --max:1200px;
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:17px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--blue);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--blue-dark);}
h1,h2,h3,h4{margin:0;color:var(--title);font-weight:700;line-height:1.35;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input{font-family:inherit;}
:focus-visible{outline:3px solid rgba(22,87,232,.35);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 24px;}
.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-btn);
  font-size:16px;font-weight:600;line-height:1;
  border:1.5px solid transparent;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
  white-space:nowrap;
}
.btn svg{width:18px;height:18px;flex:none;}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-blue{background:var(--blue);color:#fff;box-shadow:0 6px 18px rgba(22,87,232,.24);}
.btn-blue:hover{background:var(--blue-dark);color:#fff;transform:translateY(-2px);box-shadow:0 10px 24px rgba(22,87,232,.28);}
.btn-orange{background:var(--orange);color:#fff;box-shadow:0 6px 18px rgba(255,122,47,.28);}
.btn-orange:hover{background:var(--orange-dark);color:#fff;transform:translateY(-2px);box-shadow:0 12px 26px rgba(255,122,47,.32);}
.btn-outline{background:#fff;color:var(--blue);border-color:var(--blue);}
.btn-outline:hover{background:var(--blue-light);color:var(--blue-dark);border-color:var(--blue-dark);transform:translateY(-2px);}
.btn:active{transform:translateY(0);}
.btn[disabled],.btn.is-disabled{background:#DCE3EE;color:#96A1B4;border-color:#DCE3EE;box-shadow:none;cursor:not-allowed;transform:none;}
.text-link{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:15px;color:var(--blue);text-decoration:underline;text-underline-offset:5px;text-decoration-thickness:1.5px;text-decoration-color:rgba(22,87,232,.35);}
.text-link:hover{color:var(--blue-dark);text-decoration-color:var(--blue-dark);}

/* ---------- 头部 ---------- */
.site-header{position:relative;z-index:60;}
.brand-bar{background:#fff;border-bottom:1px solid var(--border);}
.brand-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:64px;}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--title);}
.logo:hover{color:var(--title);}
.logo-mark{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:11px;background:var(--blue-light);color:var(--blue);flex:none;}
.logo-mark svg{width:21px;height:21px;}
.logo-text{display:flex;flex-direction:column;font-size:18px;font-weight:700;letter-spacing:.2px;line-height:1.2;}
.logo-text small{font-size:12px;font-weight:400;color:var(--muted);letter-spacing:.5px;margin-top:2px;}
.brand-tools{display:flex;align-items:center;gap:14px;}
.icon-btn{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:10px;color:var(--text);border:1px solid var(--border);background:#fff;transition:color .2s ease,background-color .2s ease,border-color .2s ease;}
.icon-btn svg{width:20px;height:20px;}
.icon-btn:hover{color:var(--blue);background:var(--blue-light);border-color:#CFDDFB;}
.hotline{display:inline-flex;align-items:center;gap:7px;font-size:14px;color:var(--muted);}
.hotline svg{width:17px;height:17px;color:var(--blue);}
.hotline strong{color:var(--title);font-weight:700;letter-spacing:.3px;}
.menu-toggle{display:none;}
.nav-drawer{display:none;background:#fff;border-top:1px solid var(--border);}
.nav-drawer .container{padding-top:10px;padding-bottom:14px;}
.nav-drawer a{display:block;padding:11px 4px;font-size:15px;color:var(--text);border-bottom:1px solid var(--border);}
.nav-drawer a:last-child{border-bottom:0;}
.nav-drawer a:hover{color:var(--blue);}
.nav-drawer.is-open{display:block;}

.channel-bar{background:var(--blue-light);border-bottom:1px solid #DCE7FB;}
.channel-bar.is-stuck{position:sticky;top:0;z-index:70;box-shadow:0 8px 22px rgba(16,26,44,.08);}
.channel-inner{display:flex;align-items:center;gap:10px;min-height:48px;overflow-x:auto;scrollbar-width:none;}
.channel-inner::-webkit-scrollbar{display:none;}
.channel-link{
  display:inline-flex;align-items:center;height:32px;padding:0 16px;border-radius:999px;
  font-size:14px;font-weight:500;color:#2B3E5C;background:transparent;white-space:nowrap;
  transition:background-color .2s ease,color .2s ease;
}
.channel-link:hover{background:#fff;color:var(--blue);}
.channel-link.active{background:var(--blue);color:#fff;font-weight:600;box-shadow:0 4px 12px rgba(22,87,232,.24);}

/* ---------- 横幅 ---------- */
.page-banner{
  position:relative;
  background-image:linear-gradient(rgba(255,255,255,.88),rgba(255,255,255,.88)),url('/assets/images/backpic/back-2.png');
  background-size:cover,cover;
  background-position:center center;
  border-bottom:1px solid var(--border);
}
.page-banner::after{
  content:"";
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(22,87,232,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(22,87,232,.06) 1px,transparent 1px);
  background-size:48px 48px;
  opacity:.55;
  pointer-events:none;
}
.banner-inner{position:relative;z-index:2;padding:34px 0 52px;}
.crumbs{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--muted);margin-bottom:22px;flex-wrap:wrap;}
.crumbs a{color:var(--muted);}
.crumbs a:hover{color:var(--blue);}
.crumbs span.sep{color:#C3CCDA;}
.crumbs .current{color:var(--title);font-weight:600;}
.banner-head{display:grid;grid-template-columns:7fr 5fr;gap:40px;align-items:center;}
.banner-title h1{font-size:40px;line-height:1.28;letter-spacing:.2px;}
.banner-title h1 em{font-style:normal;color:var(--blue);}
.banner-sub{margin-top:16px;font-size:17px;color:var(--text);max-width:640px;}
.banner-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.banner-meta{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
.meta-pill{display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border-radius:999px;background:#fff;border:1px solid var(--border);font-size:13px;color:var(--text);box-shadow:0 1px 2px rgba(16,26,44,.04);}
.meta-pill i{width:8px;height:8px;border-radius:50%;background:var(--teal);display:inline-block;}
.banner-side{background:#fff;border:1px solid var(--border);border-radius:var(--r-card);box-shadow:var(--shadow);padding:26px;}
.banner-side h2{font-size:18px;margin-bottom:14px;}
.banner-side ol{counter-reset:side;}
.banner-side li{counter-increment:side;position:relative;padding-left:38px;padding-bottom:14px;font-size:15px;color:var(--text);}
.banner-side li:last-child{padding-bottom:0;}
.banner-side li::before{
  content:counter(side);
  position:absolute;left:0;top:2px;
  width:26px;height:26px;border-radius:50%;
  background:var(--blue-light);color:var(--blue);
  font-size:13px;font-weight:700;display:flex;align-items:center;justify-content:center;
}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0;}
.section.alt{background:var(--alt);}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;letter-spacing:1.2px;color:var(--teal);text-transform:uppercase;margin-bottom:14px;}
.eyebrow::before{content:"";width:22px;height:3px;border-radius:2px;background:var(--teal);display:inline-block;}
.section-head h2{font-size:28px;margin-bottom:14px;}
.section-head p{font-size:16px;color:var(--text);}

/* ---------- 卡片网格 ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.content-card{
  position:relative;
  display:flex;flex-direction:column;
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--r-card);
  box-shadow:var(--shadow);
  overflow:hidden;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.content-card::before{content:"";position:absolute;left:0;top:0;width:46px;height:4px;background:var(--teal);border-radius:0 0 4px 0;z-index:3;}
.content-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#D3E0FA;}
.card-cover{position:relative;display:block;aspect-ratio:16/9;overflow:hidden;background:var(--blue-light);}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.content-card:hover .card-cover img{transform:scale(1.04);}
.card-cover .tag{position:absolute;left:14px;bottom:14px;display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;background:rgba(255,255,255,.94);color:var(--blue);font-size:13px;font-weight:600;}
.card-body{padding:22px 24px 26px;display:flex;flex-direction:column;gap:12px;flex:1;}
.card-body h3{font-size:20px;line-height:1.45;}
.card-body p{font-size:15px;color:var(--text);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.card-foot{margin-top:auto;padding-top:6px;}

/* ---------- 流程步骤 ---------- */
.flow{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;}
.flow-item{
  display:flex;gap:18px;background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--shadow);transition:transform .2s ease,box-shadow .2s ease;
}
.flow-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);}
.flow-num{
  flex:none;width:42px;height:42px;border-radius:12px;background:var(--blue);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:17px;font-weight:700;
}
.flow-item h3{font-size:19px;margin-bottom:8px;}
.flow-item p{font-size:15px;color:var(--text);}
.flow-item ul{margin-top:10px;display:flex;flex-direction:column;gap:6px;}
.flow-item ul li{position:relative;padding-left:18px;font-size:14.5px;color:var(--muted);}
.flow-item ul li::before{content:"";position:absolute;left:0;top:10px;width:7px;height:7px;border-radius:50%;background:var(--teal);}

/* ---------- 要点条 ---------- */
.point-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:0;background:#fff;border:1px solid var(--border);border-radius:var(--r-card);box-shadow:var(--shadow);overflow:hidden;}
.point-strip .point{padding:24px 22px;border-right:1px solid var(--border);}
.point-strip .point:last-child{border-right:0;}
.point .num{font-family:system-ui,sans-serif;font-size:30px;font-weight:700;color:var(--blue);line-height:1.1;}
.point .num span{font-size:15px;color:var(--muted);font-weight:500;margin-left:2px;}
.point p{font-size:14px;color:var(--muted);margin-top:8px;}

/* ---------- 提示条 ---------- */
.notice{
  display:flex;gap:16px;align-items:flex-start;
  background:#fff;border:1px solid var(--border);border-left:4px solid var(--orange);
  border-radius:var(--r-card);padding:22px 24px;box-shadow:var(--shadow);
}
.notice svg{width:22px;height:22px;color:var(--orange);flex:none;margin-top:3px;}
.notice h3{font-size:17px;margin-bottom:6px;}
.notice p{font-size:15px;}

/* ---------- FAQ ---------- */
.faq-wrap{background:#fff;border:1px solid var(--border);border-radius:var(--r-card);box-shadow:var(--shadow);overflow:hidden;}
.faq-item{border-bottom:1px solid var(--border);}
.faq-item:last-child{border-bottom:0;}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:18px;
  min-height:56px;padding:16px 24px;font-size:17px;font-weight:600;color:var(--title);
  transition:background-color .2s ease,color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{background:var(--blue-light);color:var(--blue-dark);}
.faq-icon{position:relative;flex:none;width:22px;height:22px;border-radius:50%;background:var(--blue-light);}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--blue);border-radius:2px;transition:transform .2s ease,opacity .2s ease;}
.faq-icon::before{left:6px;top:10px;width:10px;height:2px;}
.faq-icon::after{left:10px;top:6px;width:2px;height:10px;}
.faq-item[open] .faq-icon::after{transform:scaleY(0);opacity:0;}
.faq-item[open] summary{background:#FAFCFF;}
.faq-answer{padding:0 24px 20px;font-size:15.5px;color:var(--text);}

/* ---------- CTA ---------- */
.cta-band{
  background:#0F1B2D;
  border-radius:0;
  padding:64px 0;
}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
.cta-inner h2{color:#fff;font-size:28px;}
.cta-inner p{color:#9FB0C7;font-size:16px;margin-top:10px;max-width:620px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{background:#0F1B2D;color:#9FB0C7;padding:64px 0 0;font-size:15px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:44px;}
.footer-brand .logo{color:#fff;margin-bottom:16px;}
.footer-brand .logo .logo-mark{background:rgba(22,87,232,.22);color:#7FA6F8;}
.footer-brand .logo-text{color:#fff;font-size:17px;}
.footer-brand p{font-size:14.5px;line-height:1.85;color:#9FB0C7;max-width:330px;}
.footer-col h4{color:#fff;font-size:16px;margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{color:#9FB0C7;font-size:14.5px;}
.footer-col a:hover{color:var(--teal);}
.footer-contact li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:#9FB0C7;}
.footer-contact svg{width:18px;height:18px;color:var(--teal);flex:none;margin-top:3px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding:22px 0 26px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13.5px;color:#8A97A8;
}
.footer-bottom a{color:#B9C7DA;}
.footer-bottom a:hover{color:var(--teal);}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;right:28px;bottom:28px;z-index:90;
  display:inline-flex;align-items:center;gap:9px;
  height:52px;padding:0 26px;border-radius:999px;
  background:var(--orange);color:#fff;font-weight:600;font-size:16px;
  box-shadow:0 12px 30px rgba(255,122,47,.34);
  opacity:0;visibility:hidden;transform:translateY(14px);
  transition:opacity .25s ease,transform .25s ease,visibility .25s ease,background-color .2s ease;
}
.float-cta svg{width:18px;height:18px;}
.float-cta:hover{background:var(--orange-dark);color:#fff;}
.float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0);}

/* ---------- 占位与状态 ---------- */
.img-placeholder{width:100%;height:100%;display:flex;align-items:center;justify-content:center;background:var(--blue-light);color:var(--blue);font-size:14px;}
.skeleton{background:linear-gradient(90deg,#EDF2FA 25%,#F6F8FC 50%,#EDF2FA 75%);background-size:400% 100%;animation:skeleton 1.4s ease infinite;border-radius:8px;}
@keyframes skeleton{0%{background-position:100% 50%;}100%{background-position:0 50%;}}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .card-grid{gap:20px;}
  .banner-title h1{font-size:36px;}
}
@media (max-width:991px){
  .section{padding:72px 0;}
  .banner-head{grid-template-columns:1fr;gap:28px;}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .flow{grid-template-columns:1fr;}
  .point-strip{grid-template-columns:repeat(2,1fr);}
  .point-strip .point:nth-child(2){border-right:0;}
  .point-strip .point:nth-child(1),.point-strip .point:nth-child(2){border-bottom:1px solid var(--border);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
  .brand-tools .hotline{display:none;}
}
@media (max-width:767px){
  body{font-size:16px;padding-bottom:64px;}
  .container{padding:0 18px;}
  .section{padding:56px 0;}
  .section-head{margin-bottom:30px;}
  .banner-inner{padding:24px 0 40px;}
  .banner-title h1{font-size:28px;line-height:1.36;}
  .banner-sub{font-size:15.5px;}
  .section-head h2{font-size:22px;}
  .brand-tools{gap:8px;}
  .brand-tools .btn-sm{display:none;}
  .menu-toggle{display:inline-flex;}
  .card-grid{grid-template-columns:1fr;}
  .point-strip{grid-template-columns:1fr;}
  .point-strip .point{border-right:0;border-bottom:1px solid var(--border);}
  .point-strip .point:last-child{border-bottom:0;}
  .banner-side{padding:20px;}
  .card-body h3{font-size:18px;}
  .float-cta{
    left:0;right:0;bottom:0;width:100%;height:60px;border-radius:0;justify-content:center;
    box-shadow:0 -6px 20px rgba(16,26,44,.14);
  }
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px;}
  .footer-brand{grid-column:1/-1;}
  .footer-bottom{flex-direction:column;align-items:flex-start;padding-bottom:76px;}
}
@media (max-width:520px){
  .banner-actions .btn{width:100%;}
  .banner-meta{gap:8px;}
  .meta-pill{font-size:12.5px;padding:7px 12px;}
  .cta-inner h2{font-size:22px;}
}

/* roulang page: category2 */
:root{
  --brand:#1657E8;
  --brand-dark:#0E47C4;
  --brand-soft:#EAF1FF;
  --cyan:#00C2A8;
  --cyan-soft:#E6FAF6;
  --orange:#FF7A2F;
  --orange-soft:#FFF1E8;
  --bg:#F6F8FC;
  --card:#FFFFFF;
  --alt:#EEF3FB;
  --ink:#101A2C;
  --text:#4A5A72;
  --muted:#8A97A8;
  --line:#E2E8F2;
  --danger:#E5484D;
  --r-card:16px;
  --r-btn:10px;
  --r-img:12px;
  --shadow:0 1px 2px rgba(16,26,44,.04),0 10px 28px rgba(22,87,232,.08);
  --shadow-hover:0 16px 36px rgba(22,87,232,.14);
  --maxw:1200px;
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:17px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:600;line-height:1.35;}
h1{font-size:40px;line-height:1.2;font-weight:700;letter-spacing:-.4px;}
h2{font-size:28px;line-height:1.3;font-weight:700;}
h3{font-size:20px;line-height:1.4;}
h4{font-size:16px;line-height:1.5;}
p{margin:0 0 14px;}
p:last-child{margin-bottom:0;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-dark);}
ul,ol{margin:0 0 14px;padding-left:20px;}
li{margin-bottom:8px;}
img{max-width:100%;display:block;border-radius:var(--r-img);object-fit:cover;}
button{font-family:inherit;font-size:inherit;cursor:pointer;}
input,select,textarea{font-family:inherit;font-size:15px;}
:focus-visible{outline:3px solid rgba(22,87,232,.35);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px;}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-btn);border:1.5px solid transparent;
  font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn svg{width:17px;height:17px;flex:none;}
.btn-orange{background:var(--orange);color:#fff;box-shadow:0 8px 20px rgba(255,122,47,.28);}
.btn-orange:hover{background:#F0691E;color:#fff;transform:translateY(-2px);}
.btn-blue{background:var(--brand);color:#fff;box-shadow:0 8px 20px rgba(22,87,232,.22);}
.btn-blue:hover{background:var(--brand-dark);color:#fff;transform:translateY(-2px);}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--brand);}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-dark);transform:translateY(-2px);}
.btn-sm{padding:9px 16px;font-size:14px;}
.btn-link{background:none;border:none;padding:0;color:var(--brand);font-weight:600;text-decoration:underline;text-underline-offset:5px;text-decoration-thickness:1.5px;}
.btn-link:hover{color:var(--brand-dark);}
.btn:disabled,.btn.is-disabled{background:#D9DFEA;color:#8A97A8;border-color:#D9DFEA;box-shadow:none;cursor:not-allowed;transform:none;}
.btn-block{width:100%;}

/* ============ 头部 ============ */
.site-header{position:relative;z-index:60;}
.brand-bar{background:#fff;border-bottom:1px solid var(--line);}
.brand-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:64px;padding-top:8px;padding-bottom:8px;}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--ink);}
.logo:hover{color:var(--ink);}
.logo-mark{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:11px;background:var(--brand);color:#fff;flex:none;}
.logo-mark svg{width:21px;height:21px;}
.logo-text{display:flex;flex-direction:column;font-size:17px;font-weight:700;letter-spacing:-.2px;}
.logo-text small{font-size:12px;font-weight:400;color:var(--muted);letter-spacing:.2px;line-height:1.4;}
.brand-tools{display:flex;align-items:center;gap:14px;}
.icon-btn{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:10px;border:1px solid var(--line);background:#fff;color:var(--ink);transition:background .2s ease,color .2s ease,border-color .2s ease;}
.icon-btn svg{width:19px;height:19px;}
.icon-btn:hover{background:var(--brand-soft);color:var(--brand);border-color:#CBDBFB;}
.hotline{display:inline-flex;align-items:center;gap:7px;font-size:14px;color:var(--muted);}
.hotline svg{width:17px;height:17px;color:var(--cyan);}
.hotline strong{color:var(--ink);font-weight:600;}
.menu-toggle{display:none;}
.nav-drawer{display:none;background:#fff;border-bottom:1px solid var(--line);}
.nav-drawer .container{display:flex;flex-direction:column;padding-top:8px;padding-bottom:8px;}
.nav-drawer a{padding:12px 4px;border-bottom:1px solid var(--line);color:var(--ink);font-weight:600;font-size:15px;}
.nav-drawer a:last-child{border-bottom:none;}
.nav-drawer.open{display:block;}

.channel-bar{position:sticky;top:0;z-index:55;background:var(--brand-soft);border-bottom:1px solid #D8E5FC;transition:box-shadow .25s ease;}
.channel-bar.is-stuck{box-shadow:0 8px 22px rgba(16,26,44,.09);}
.channel-inner{display:flex;align-items:center;gap:8px;min-height:48px;overflow-x:auto;scrollbar-width:none;}
.channel-inner::-webkit-scrollbar{display:none;}
.channel-link{
  display:inline-flex;align-items:center;padding:8px 16px;border-radius:999px;
  font-size:14px;font-weight:600;color:var(--brand);white-space:nowrap;
  border:1px solid transparent;transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.channel-link:hover{background:#fff;color:var(--brand-dark);border-color:#CBDBFB;}
.channel-link.active{background:var(--brand);color:#fff;border-color:var(--brand);}

/* ============ 横幅 ============ */
.page-banner{
  position:relative;
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;
  background-position:center;
  padding:64px 0 60px;
  overflow:hidden;
}
.page-banner::before{content:"";position:absolute;inset:0;background:rgba(255,255,255,.86);}
.banner-inner{position:relative;max-width:860px;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:16px;}
.breadcrumb a{color:var(--brand);font-weight:600;}
.breadcrumb span.sep{color:#BFC9D8;}
.page-banner h1{margin-bottom:14px;}
.page-banner h1 em{font-style:normal;color:var(--brand);}
.banner-sub{font-size:18px;color:var(--text);max-width:700px;}
.banner-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.tag{display:inline-flex;align-items:center;gap:6px;padding:6px 13px;border-radius:999px;font-size:13px;font-weight:600;background:#fff;color:var(--brand);border:1px solid #D3E0FB;}
.tag-cyan{background:var(--cyan-soft);color:#048D7C;border-color:#B6EDE4;}
.tag-orange{background:var(--orange-soft);color:#C4520F;border-color:#FFD9BF;}
.banner-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}

/* ============ 主体布局 ============ */
.page-main{padding:56px 0 88px;}
.toc-layout{display:grid;grid-template-columns:264px minmax(0,1fr);gap:40px;align-items:start;}

.toc-card{position:sticky;top:72px;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:22px;box-shadow:var(--shadow);}
.toc-card h2{font-size:15px;color:var(--muted);font-weight:600;letter-spacing:.4px;margin-bottom:14px;}
.toc-list{list-style:none;margin:0;padding:0;}
.toc-list li{margin-bottom:4px;}
.toc-list a{display:block;padding:9px 12px;border-radius:9px;font-size:14px;font-weight:600;color:var(--text);border-left:3px solid transparent;transition:background .2s ease,color .2s ease,border-color .2s ease;}
.toc-list a:hover{background:var(--brand-soft);color:var(--brand);}
.toc-list a.active{background:var(--brand-soft);color:var(--brand);border-left-color:var(--cyan);}
.toc-hint{margin-top:16px;padding-top:16px;border-top:1px solid var(--line);font-size:13px;color:var(--muted);}

.content-flow{display:flex;flex-direction:column;gap:32px;}
.sec-block{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:30px;box-shadow:var(--shadow);}
.sec-block.plain{background:transparent;border:none;box-shadow:none;padding:0;}
.sec-head{display:flex;flex-wrap:wrap;align-items:baseline;gap:12px;margin-bottom:18px;}
.sec-head h2{font-size:24px;}
.sec-head .num-badge{display:inline-flex;align-items:center;justify-content:center;width:30px;height:30px;border-radius:999px;background:var(--brand-soft);color:var(--brand);font-size:14px;font-weight:700;flex:none;}
.sec-lead{font-size:16px;color:var(--muted);margin-bottom:22px;}

/* 图文分节 */
.split{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:28px;align-items:start;margin-bottom:26px;}
.split:last-child{margin-bottom:0;}
.split h3{margin-bottom:10px;padding-left:14px;position:relative;}
.split h3::before{content:"";position:absolute;left:0;top:7px;width:4px;height:16px;border-radius:2px;background:var(--cyan);}
.split p{font-size:16px;}
.mini-list{list-style:none;padding:0;margin:12px 0 0;}
.mini-list li{position:relative;padding-left:22px;font-size:15px;color:var(--text);}
.mini-list li::before{content:"";position:absolute;left:2px;top:12px;width:8px;height:8px;border-radius:2px;background:var(--brand);opacity:.55;}
.card-note{background:var(--alt);border-radius:14px;padding:18px 20px;border-left:4px solid var(--cyan);}
.card-note strong{color:var(--ink);}
.pull-quote{margin:0;padding:18px 22px;background:var(--brand-soft);border-radius:14px;font-size:16px;color:var(--ink);border-left:4px solid var(--brand);}

/* 竖版封面卡（瀑布） */
.vgrid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;}
.vcard{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column;transition:transform .2s ease,box-shadow .2s ease;}
.vcard:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);}
.vcard .thumb{aspect-ratio:3/4;width:100%;background:var(--brand-soft);}
.vcard .vbody{padding:16px 16px 18px;display:flex;flex-direction:column;gap:8px;}
.vcard h3{font-size:16px;}
.vcard p{font-size:14px;color:var(--muted);margin:0;}
.heat{display:inline-flex;align-items:center;gap:5px;font-size:12px;font-weight:700;padding:4px 10px;border-radius:999px;background:var(--orange-soft);color:#C4520F;}
.heat svg{width:13px;height:13px;}

/* 对比表 */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:14px;background:#fff;}
table.cmp{width:100%;border-collapse:collapse;min-width:640px;font-size:15px;}
table.cmp caption{text-align:left;padding:14px 18px;font-size:14px;color:var(--muted);border-bottom:1px solid var(--line);}
table.cmp th,table.cmp td{padding:14px 18px;text-align:left;vertical-align:top;border-bottom:1px solid var(--line);}
table.cmp thead th{background:var(--alt);color:var(--ink);font-weight:600;font-size:14px;white-space:nowrap;}
table.cmp tbody tr:nth-child(odd){background:#FAFCFF;}
table.cmp tbody tr:hover{background:var(--brand-soft);}
table.cmp tbody tr:last-child td{border-bottom:none;}
table.cmp td:first-child{color:var(--ink);font-weight:600;}

/* 步骤清单 */
.steps{counter-reset:step;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-top:20px;}
.step{position:relative;background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px 20px 20px 62px;box-shadow:var(--shadow);}
.step::before{counter-increment:step;content:counter(step);position:absolute;left:20px;top:20px;display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:999px;background:var(--brand);color:#fff;font-size:13px;font-weight:700;}
.step h3{font-size:16px;margin-bottom:6px;}
.step p{font-size:14px;color:var(--muted);margin:0;}

/* 排行列表 */
.rank-list{list-style:none;margin:0;padding:0;}
.rank-item{display:flex;align-items:center;gap:16px;padding:14px 4px;border-bottom:1px solid var(--line);}
.rank-item:last-child{border-bottom:none;}
.rank-no{display:inline-flex;align-items:center;justify-content:center;width:26px;height:26px;border-radius:8px;background:var(--alt);color:var(--brand);font-size:13px;font-weight:700;flex:none;}
.rank-item:nth-child(-n+3) .rank-no{background:var(--brand);color:#fff;}
.rank-main{flex:1 1 auto;min-width:0;}
.rank-main h3{font-size:16px;margin-bottom:2px;}
.rank-main p{font-size:13px;color:var(--muted);margin:0;}
.rank-bar{flex:none;width:110px;height:8px;border-radius:999px;background:var(--alt);overflow:hidden;}
.rank-bar i{display:block;height:100%;border-radius:999px;background:var(--cyan);}

/* FAQ */
.faq-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow);overflow:hidden;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:last-child{border-bottom:none;}
.faq-q{display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%;background:none;border:none;text-align:left;padding:18px 24px;min-height:56px;color:var(--ink);font-size:16px;font-weight:600;transition:background .2s ease;}
.faq-q:hover{background:var(--brand-soft);}
.faq-icon{position:relative;width:18px;height:18px;flex:none;}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--brand);border-radius:2px;transition:transform .25s ease,opacity .25s ease;}
.faq-icon::before{left:0;top:8px;width:18px;height:2px;}
.faq-icon::after{left:8px;top:0;width:2px;height:18px;}
.faq-item.open .faq-icon::after{transform:rotate(90deg);opacity:0;}
.faq-a{display:none;padding:0 24px 20px;font-size:15px;color:var(--text);}
.faq-a p{margin:0;}
.faq-item.open .faq-a{display:block;}

/* 协助卡 */
.help-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin-top:20px;}
.help-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px;box-shadow:var(--shadow);transition:transform .2s ease,box-shadow .2s ease;}
.help-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);}
.help-card .ico{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:12px;background:var(--brand-soft);color:var(--brand);margin-bottom:14px;}
.help-card .ico svg{width:20px;height:20px;}
.help-card h3{font-size:17px;margin-bottom:8px;}
.help-card p{font-size:14px;color:var(--muted);margin-bottom:12px;}

/* 表单区 */
.form-row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;}
.field{display:flex;flex-direction:column;gap:7px;margin-bottom:16px;}
.field label{font-size:14px;font-weight:600;color:var(--ink);}
.field label .req{color:var(--orange);}
.field input,.field select,.field textarea{height:44px;padding:0 14px;border:1px solid var(--line);border-radius:var(--r-btn);background:#fff;color:var(--ink);transition:border-color .2s ease,background .2s ease,box-shadow .2s ease;}
.field textarea{height:auto;padding:12px 14px;resize:vertical;min-height:110px;line-height:1.7;}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--brand);background:var(--brand-soft);box-shadow:0 0 0 2px rgba(22,87,232,.14);outline:none;}
.field .hint{font-size:13px;color:var(--muted);}
.field.error input,.field.error textarea{border-color:var(--danger);}
.field .err-msg{display:none;font-size:13px;color:var(--danger);}
.field.error .err-msg{display:block;}
.field ok{display:inline-flex;}

/* CTA 带 */
.cta-band{background:#0F1B2D;border-radius:20px;padding:44px 40px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;margin-top:8px;}
.cta-band h2{color:#fff;font-size:26px;margin-bottom:8px;}
.cta-band p{color:#A9B6CA;margin:0;max-width:560px;}
.cta-band .cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* 页脚 */
.site-footer{background:#0F1B2D;color:#98A6BC;padding:56px 0 26px;margin-top:64px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px;padding-bottom:32px;border-bottom:1px solid rgba(255,255,255,.1);}
.site-footer .logo{color:#fff;margin-bottom:14px;}
.site-footer .logo .logo-text{font-size:16px;}
.footer-brand p{font-size:14px;color:#93A2B8;line-height:1.8;margin:0;max-width:320px;}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:14px;}
.footer-col ul{list-style:none;margin:0;padding:0;}
.footer-col li{margin-bottom:9px;}
.footer-col a{color:#93A2B8;font-size:14px;}
.footer-col a:hover{color:var(--cyan);}
.footer-contact li{display:flex;align-items:flex-start;gap:9px;font-size:14px;color:#93A2B8;}
.footer-contact svg{width:16px;height:16px;flex:none;margin-top:4px;color:var(--cyan);}
.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;padding-top:20px;font-size:13px;color:#7C8AA0;}
.footer-bottom a{color:#9FB0C6;}
.footer-bottom a:hover{color:var(--cyan);}

/* 浮动操作条 */
.float-cta{
  position:fixed;right:24px;bottom:26px;z-index:80;
  display:inline-flex;align-items:center;gap:8px;
  background:var(--orange);color:#fff;font-size:15px;font-weight:600;
  padding:13px 22px;border-radius:999px;box-shadow:0 14px 30px rgba(255,122,47,.34);
  opacity:0;visibility:hidden;transform:translateY(14px);
  transition:opacity .28s ease,transform .28s ease,visibility .28s ease,background .2s ease;
}
.float-cta:hover{background:#F0691E;color:#fff;transform:translateY(0) scale(1.02);}
.float-cta.show{opacity:1;visibility:visible;transform:translateY(0);}
.float-cta svg{width:17px;height:17px;}
.mobile-bar{display:none;}

/* 空态与骨架（备用状态样式） */
.skeleton{background:linear-gradient(90deg,#EEF3FB 25%,#E3EBF8 37%,#EEF3FB 63%);background-size:400% 100%;animation:sk 1.4s ease infinite;border-radius:10px;}
@keyframes sk{0%{background-position:100% 50%;}100%{background-position:0 50%;}}
.empty-state{border:1px dashed var(--line);border-radius:var(--r-card);padding:36px 24px;text-align:center;background:#fff;}
.empty-state svg{width:46px;height:46px;color:var(--brand);margin:0 auto 14px;}
.empty-state p{color:var(--muted);font-size:15px;margin-bottom:12px;}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .toc-layout{grid-template-columns:224px minmax(0,1fr);gap:28px;}
  .brand-tools .hotline{display:none;}
}
@media (max-width:991px){
  h1{font-size:32px;}
  h2{font-size:24px;}
  .toc-layout{grid-template-columns:1fr;}
  .toc-card{position:static;top:auto;}
  .toc-list{display:flex;flex-wrap:wrap;gap:8px;}
  .toc-list li{margin-bottom:0;}
  .toc-list a{border-left:none;border:1px solid var(--line);border-radius:999px;font-size:13px;padding:7px 14px;}
  .toc-list a.active{border-color:var(--brand);}
  .toc-hint{display:none;}
  .vgrid{grid-template-columns:repeat(3,minmax(0,1fr));}
  .split{grid-template-columns:1fr;}
  .help-grid{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px;}
  .cta-band{padding:32px 26px;}
}
@media (max-width:767px){
  body{font-size:16px;}
  h1{font-size:28px;line-height:1.3;}
  h2{font-size:22px;}
  h3{font-size:18px;}
  .container{padding:0 18px;}
  .menu-toggle{display:inline-flex;}
  .brand-tools .btn-blue{display:none;}
  .logo-text{font-size:15px;}
  .logo-text small{display:none;}
  .logo-mark{width:34px;height:34px;}
  .channel-inner{min-height:46px;}
  .page-banner{padding:44px 0 40px;}
  .page-main{padding:32px 0 64px;}
  .sec-block{padding:22px 18px;}
  .vgrid{grid-template-columns:1fr 1fr;gap:14px;}
  .form-row{grid-template-columns:1fr;}
  .rank-bar{display:none;}
  .site-footer{padding:44px 0 96px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:22px;}
  .footer-brand{grid-column:1 / -1;}
  .footer-bottom{flex-direction:column;}
  .cta-band{flex-direction:column;align-items:flex-start;border-radius:16px;}
  .cta-band .cta-actions{width:100%;}
  .cta-band .btn{flex:1 1 auto;}
  .float-cta{display:none;}
  .mobile-bar{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:80;
    padding:10px 16px calc(10px + env(safe-area-inset-bottom));
    background:rgba(255,255,255,.97);border-top:1px solid var(--line);
    box-shadow:0 -8px 24px rgba(16,26,44,.08);
  }
  .mobile-bar .btn{width:100%;padding:14px 18px;font-size:16px;}
}
@media (max-width:520px){
  .vgrid{grid-template-columns:1fr;}
  .brand-inner{gap:10px;}
  .help-card{padding:18px;}
  .table-wrap table.cmp{min-width:560px;}
}