/* roulang page: index */
:root{
  --primary:#2E5E8C;
  --primary-dark:#1F4468;
  --primary-light:#E9F0F7;
  --accent:#E07B39;
  --accent-dark:#C4642A;
  --ink:#16212C;
  --text-2:#4B5A68;
  --text-3:#7B8996;
  --line:#E2E8EF;
  --bg:#F6F8FA;
  --bg-alt:#EDF2F7;
  --card:#FFFFFF;
  --ok:#2E8B6F;
  --mint:#E6F2EE;
  --radius:14px;
  --radius-sm:10px;
  --shadow:0 1px 2px rgba(20,40,70,.06),0 8px 24px -12px rgba(20,40,70,.14);
  --shadow-lg:0 12px 32px -12px rgba(20,40,70,.22);
  --font-cn:"PingFang SC","Hiragino Sans GB","Microsoft YaHei UI","Source Han Sans SC","Noto Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
  padding-bottom:72px;
}
img{display:block;max-width:100%;height:auto}
a{color:var(--primary);text-decoration:none;transition:color .2s ease-out}
a:hover{color:var(--primary-dark)}
a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid rgba(46,94,140,.28);outline-offset:2px;border-radius:6px}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;line-height:1.3}
h1{font-size:clamp(32px,3.4vw,44px);line-height:1.25;letter-spacing:.01em}
h2{font-size:28px}
h3{font-size:20px;font-weight:600;line-height:1.4}
h4{font-size:16px;font-weight:600;line-height:1.5}
p{margin:0 0 18px}
ul{margin:0;padding:0;list-style:none}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
.gx{margin-left:-16px;margin-right:-16px}
.gx>.cell{padding-left:16px;padding-right:16px}
.section{padding:96px 0}
.section-alt{background:var(--bg-alt)}
.section-head{max-width:760px;margin-bottom:44px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  display:inline-block;font-size:12.5px;font-weight:600;letter-spacing:.04em;
  color:var(--primary);background:var(--primary-light);border-radius:999px;
  padding:5px 14px;margin-bottom:16px;
}
.section-head p{color:var(--text-2);font-size:16px;margin:14px 0 0}

/* buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-family:var(--font-cn);font-size:15px;font-weight:600;line-height:1.2;
  padding:12px 24px;border-radius:var(--radius-sm);border:1px solid transparent;
  cursor:pointer;transition:background-color .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out,color .2s ease-out;
  white-space:nowrap;
}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 6px 18px -10px rgba(196,100,42,.75)}
.btn-primary:hover{background:var(--accent-dark);color:#fff;transform:translateY(-1px);box-shadow:0 12px 26px -12px rgba(196,100,42,.85)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:#fff;color:var(--primary);border-color:rgba(46,94,140,.3)}
.btn-ghost:hover{background:var(--primary-light);color:var(--primary-dark)}
.btn-text{background:none;border:0;padding:0;color:var(--primary);font-weight:600}
.btn-text:hover{text-decoration:underline;text-underline-offset:3px;color:var(--primary-dark)}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none;box-shadow:none;transform:none}

/* header */
.site-header{
  position:sticky;top:0;z-index:200;background:#fff;
  border-bottom:1px solid var(--line);transition:box-shadow .2s ease-out;
}
.site-header.is-scrolled{box-shadow:0 6px 20px -14px rgba(20,40,70,.35)}
.nav-inner{display:flex;align-items:center;gap:20px;height:68px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:34px;height:34px;border-radius:9px;background:var(--primary);
  display:flex;align-items:center;justify-content:center;flex:0 0 auto;
}
.brand-mark svg{width:19px;height:19px;display:block}
.brand-text{font-size:18px;font-weight:700;color:var(--ink);letter-spacing:.01em}
.brand-text:hover{color:var(--primary)}
.nav-chips{display:flex;align-items:center;gap:6px;flex:1 1 auto;min-width:0;overflow-x:auto;scrollbar-width:none}
.nav-chips::-webkit-scrollbar{display:none}
.chip{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:500;
  color:var(--text-2);background:transparent;border-radius:999px;padding:8px 16px;
  white-space:nowrap;transition:background-color .2s ease-out,color .2s ease-out;
}
.chip:hover{background:#F0F4F8;color:var(--primary-dark)}
.chip.is-active{background:var(--primary-light);color:var(--primary);font-weight:600}
.chip.is-active::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--primary)}
.nav-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.nav-actions .btn{padding:10px 20px}
.nav-burger{
  display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);
  background:#fff;color:var(--ink);cursor:pointer;align-items:center;justify-content:center;
}
.nav-burger:hover{background:var(--primary-light);color:var(--primary)}
.nav-drawer{
  display:none;border-top:1px solid var(--line);background:#fff;padding:14px 20px 20px;
}
.nav-drawer.is-open{display:block}
.nav-drawer .chip{display:flex;width:100%;border-radius:10px;padding:12px 14px;font-size:15px}
.nav-drawer .btn{width:100%;margin-top:12px}

/* hero */
.hero{
  position:relative;overflow:hidden;padding:72px 0 88px;
  background:linear-gradient(180deg,#F6F8FA 0%,#EAF1F8 100%);
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(46,94,140,.14) 1px,transparent 1px);
  background-size:22px 22px;opacity:.45;
}
.hero .container{position:relative;z-index:1}
.hero-copy{max-width:620px}
.hero h1{margin-bottom:18px}
.hero-sub{font-size:18px;color:var(--text-2);margin:0 0 28px;max-width:30ch}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:30px}
.trust-row{display:flex;flex-wrap:wrap;gap:10px 26px}
.trust-item{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-2)}
.trust-item i{color:var(--primary);font-size:15px}
.hero-media{position:relative;margin-top:36px}
.hero-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:16px;
  background:var(--primary-light);box-shadow:var(--shadow);
}
.hero-step-card{
  position:absolute;left:18px;right:18px;bottom:-26px;
  background:#fff;border:1px solid var(--line);border-radius:12px;
  box-shadow:var(--shadow-lg);padding:16px 18px;
}
.hero-step-head{display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--text-3);margin-bottom:10px}
.hero-step-head strong{color:var(--ink);font-weight:600;font-size:13.5px}
.hero-step-line{height:3px;border-radius:99px;background:var(--primary-light);overflow:hidden;margin-bottom:12px}
.hero-step-line span{display:block;width:38%;height:100%;background:var(--primary);border-radius:99px}
.hero-step-list li{display:flex;gap:10px;font-size:13.5px;color:var(--text-2);line-height:1.7}
.hero-step-list li+li{margin-top:4px}
.hero-step-list b{color:var(--primary);font-weight:700;font-size:12.5px;flex:0 0 auto;padding-top:2px}

/* points */
.points-grid{margin-bottom:-24px}
.points-grid>.cell{margin-bottom:24px}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:28px;box-shadow:var(--shadow);height:100%;
  transition:transform .24s ease-out,box-shadow .24s ease-out,border-color .24s ease-out;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);border-color:rgba(46,94,140,.2)}
.card-icon{
  width:32px;height:32px;border-radius:50%;background:var(--primary-light);
  display:flex;align-items:center;justify-content:center;color:var(--primary);
  margin-bottom:16px;font-size:15px;
}
.card h3{margin-bottom:10px}
.card p{font-size:15px;line-height:1.8;color:var(--text-2);margin-bottom:0}
.bullet-list{margin-top:14px}
.bullet-list li{position:relative;padding-left:16px;font-size:14px;color:var(--text-2);line-height:1.8}
.bullet-list li+li{margin-top:6px}
.bullet-list li::before{
  content:"";position:absolute;left:0;top:10px;width:6px;height:6px;
  border-radius:2px;background:var(--primary);
}
.data-card{display:flex;flex-direction:column;justify-content:center;background:var(--primary-light);border-color:#D8E4EF}
.data-num{font-size:40px;font-weight:700;line-height:1;color:var(--primary-dark);letter-spacing:-.02em}
.data-num span{font-size:14px;font-weight:600;color:var(--text-2);margin-left:6px}
.data-card .card-icon{background:#fff}
.wide-card{display:flex;align-items:flex-start;gap:22px}
.wide-card .card-icon{margin-bottom:0;flex:0 0 auto}
.wide-card .wide-body{flex:1 1 auto;min-width:0}
.wide-card .wide-cols{display:flex;flex-wrap:wrap;gap:10px 28px;margin-top:12px}
.wide-card .wide-cols span{font-size:14px;color:var(--text-2);display:flex;align-items:center;gap:7px}
.wide-card .wide-cols i{color:var(--ok);font-size:13px}

/* scenes */
.scene-row{display:flex;align-items:center;gap:48px;margin-bottom:56px}
.scene-row:last-child{margin-bottom:0}
.scene-row.reverse{flex-direction:row-reverse}
.scene-text{flex:1 1 50%;min-width:0}
.scene-media{flex:1 1 50%;min-width:0}
.scene-media img{
  width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:14px;
  background:var(--primary-light);box-shadow:var(--shadow);
}
.scene-num{font-size:40px;font-weight:700;color:rgba(46,94,140,.28);line-height:1;margin-bottom:8px}
.scene-text h3{margin-bottom:12px;font-size:20px}
.scene-text p{font-size:15px;color:var(--text-2);margin-bottom:0}

/* proof */
.stat-strip{
  display:flex;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);overflow:hidden;margin-bottom:44px;
}
.stat-item{flex:1 1 25%;padding:26px 20px;text-align:center;border-right:1px solid var(--line)}
.stat-item:last-child{border-right:0}
.stat-item b{display:block;font-size:36px;font-weight:700;line-height:1.1;color:var(--ink)}
.stat-item span{display:block;font-size:14px;color:var(--text-2);margin-top:6px}
.quote-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:26px;box-shadow:var(--shadow);height:100%;
  display:flex;flex-direction:column;justify-content:space-between;
}
.quote-mark{font-size:22px;color:rgba(46,94,140,.3);line-height:1;margin-bottom:12px}
.quote-card p{font-size:15px;color:var(--text-2);line-height:1.8;margin-bottom:20px}
.quote-person{display:flex;align-items:center;gap:12px}
.quote-avatar{
  width:40px;height:40px;border-radius:50%;background:var(--primary-light);color:var(--primary);
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px;flex:0 0 auto;
}
.quote-name{font-size:14px;font-weight:600;color:var(--ink);line-height:1.4}
.quote-role{font-size:13px;color:var(--text-3);line-height:1.4}
.partner-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px 34px;
  margin-top:34px;padding-top:26px;border-top:1px solid var(--line);
}
.partner-row span{font-size:14px;color:var(--text-3);letter-spacing:.02em}
.partner-row .partner-label{font-size:13px;color:var(--text-2);font-weight:600}

/* news */
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:40px;flex-wrap:wrap}
.news-head p{color:var(--text-2);font-size:16px;margin:12px 0 0;max-width:640px}
.news-grid{margin-bottom:-24px}
.news-grid>.cell{margin-bottom:24px}
.news-card{
  display:flex;flex-direction:column;height:100%;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);color:inherit;
  transition:transform .24s ease-out,box-shadow .24s ease-out,border-color .24s ease-out;
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);border-color:rgba(46,94,140,.2);color:inherit}
.news-cover{position:relative;aspect-ratio:16/9;background:var(--primary-light);overflow:hidden}
.news-cover img{width:100%;height:100%;object-fit:cover}
.news-cover .placeholder{
  width:100%;height:100%;display:flex;align-items:center;justify-content:center;
  color:var(--primary);font-size:26px;
}
.news-body{padding:22px;display:flex;flex-direction:column;flex:1 1 auto}
.tag{
  display:inline-block;font-size:12.5px;font-weight:600;letter-spacing:.04em;
  color:var(--primary);background:var(--primary-light);border-radius:999px;
  padding:4px 12px;line-height:1.5;
}
.tag-mint{color:var(--ok);background:var(--mint)}
.news-title{font-size:18px;font-weight:600;line-height:1.5;margin:14px 0 10px;color:var(--ink);transition:color .2s ease-out}
.news-card:hover .news-title{color:var(--primary)}
.news-excerpt{font-size:15px;line-height:1.8;color:var(--text-2);margin:0 0 18px;flex:1 1 auto}
.news-meta{display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--text-3)}
.news-meta i{color:var(--primary);font-size:13px}
.news-empty{
  min-height:200px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:12px;background:#fff;border:1px dashed var(--line);border-radius:var(--radius);
  color:var(--text-2);font-size:14px;
}
.news-empty i{font-size:26px;color:var(--primary)}

/* faq */
.faq-wrap{max-width:800px;margin:0 auto}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line);position:relative;transition:background-color .2s ease-out}
.faq-item:hover{background:var(--bg)}
.faq-title{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:16px;font-weight:600;color:var(--ink);line-height:1.5;
  padding:18px 16px;cursor:pointer;
}
.faq-title::before{display:none}
.faq-icon{
  flex:0 0 auto;width:22px;height:22px;border-radius:50%;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;color:var(--primary);font-size:11px;
  transition:transform .2s ease-out,background-color .2s ease-out;
}
.accordion-item.is-active .faq-icon{transform:rotate(135deg);background:var(--primary-light)}
.accordion-item.is-active .faq-title{color:var(--primary-dark)}
.accordion-item.is-active::after{content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;border-radius:99px;background:var(--primary)}
.accordion-content{padding:0 44px 20px 16px;color:var(--text-2);font-size:15px;line-height:1.8;border:0;background:transparent}
.accordion-content p{margin-bottom:10px}
.accordion-content p:last-child{margin-bottom:0}

/* cta banner */
.cta-banner{background:var(--primary-light);border-radius:18px;padding:44px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-banner h2{font-size:24px;margin-bottom:10px}
.cta-banner p{margin:0;color:var(--text-2);font-size:15px;max-width:52ch}
.cta-banner .btn{flex:0 0 auto}

/* footer */
.site-footer{background:var(--bg-alt);border-top:1px solid var(--line);padding:64px 0 0;margin-top:0}
.footer-grid{margin-bottom:-24px}
.footer-grid>.cell{margin-bottom:24px}
.footer-about p{font-size:14px;color:var(--text-2);margin:14px 0 18px;max-width:34ch}
.footer-contact{display:flex;align-items:center;gap:9px;font-size:14px;color:var(--text-2)}
.footer-contact+.footer-contact{margin-top:8px}
.footer-contact i{color:var(--primary);font-size:14px;width:16px}
.footer-title{font-size:14px;font-weight:600;color:var(--ink);margin-bottom:14px}
.footer-links li+li{margin-top:9px}
.footer-links a{font-size:14px;color:var(--text-2);display:inline-block;transition:color .2s ease-out,transform .2s ease-out}
.footer-links a:hover{color:var(--primary);transform:translateX(2px)}
.footer-bottom{
  margin-top:44px;padding:20px 0;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.footer-bottom nav{display:flex;gap:18px}

/* sticky cta bar */
.cta-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:150;background:#fff;
  border-top:1px solid var(--line);box-shadow:0 -8px 26px -18px rgba(20,40,70,.4);
  transform:translateY(110%);transition:transform .12s ease-out;
  padding-bottom:env(safe-area-inset-bottom);
}
.cta-bar.is-visible{transform:translateY(0)}
.cta-bar.is-dismissed{display:none}
.cta-bar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:64px}
.cta-bar-text{font-size:14px;color:var(--text-2);display:flex;align-items:center;gap:9px;min-width:0}
.cta-bar-text i{color:var(--primary)}
.cta-bar-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.cta-bar-close{
  width:32px;height:32px;border-radius:50%;border:1px solid var(--line);background:#fff;
  color:var(--text-3);cursor:pointer;display:flex;align-items:center;justify-content:center;
}
.cta-bar-close:hover{color:var(--primary);border-color:rgba(46,94,140,.3)}

/* responsive */
@media (max-width:1023px){
  .nav-chips{display:none}
  .nav-actions .btn{display:none}
  .nav-burger{display:flex}
  .section{padding:64px 0}
  .hero{padding:56px 0 72px}
  .hero-sub{font-size:17px}
  .scene-row,.scene-row.reverse{flex-direction:column;gap:26px;margin-bottom:44px}
  .scene-media,.scene-text{width:100%}
  .cta-banner{padding:32px}
  h1{font-size:clamp(26px,5vw,30px)}
  h2{font-size:22px}
}
@media (max-width:768px){
  body{padding-bottom:88px}
  .gx{margin-left:-10px;margin-right:-10px}
  .gx>.cell{padding-left:10px;padding-right:10px}
  .section{padding:56px 0}
  .card{padding:22px}
  .wide-card{flex-direction:column;gap:14px}
  .stat-strip{flex-wrap:wrap}
  .stat-item{flex:1 1 50%;border-right:0;border-bottom:1px solid var(--line)}
  .stat-item:nth-child(odd){border-right:1px solid var(--line)}
  .stat-item:nth-child(3),.stat-item:nth-child(4){border-bottom:0}
  .stat-item b{font-size:30px}
  .hero-step-card{position:static;margin-top:14px;left:auto;right:auto;bottom:auto}
  .hero-media{margin-top:24px}
  .cta-bar-inner{height:auto;padding:12px 0;flex-direction:column;align-items:stretch;gap:10px}
  .cta-bar-text{font-size:13px}
  .cta-bar-actions{width:100%}
  .cta-bar-actions .btn{flex:1 1 auto}
  .cta-banner{padding:26px;flex-direction:column;align-items:flex-start}
  .cta-banner .btn{width:100%}
  .news-head .btn-text{align-self:flex-start}
  .accordion-content{padding-right:20px}
}
@media (max-width:480px){
  .container{padding:0 16px}
  .trust-row{gap:8px 16px}
  .brand-text{font-size:16px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}

/* roulang page: article */
:root{
  --brand:#2E5E8C;
  --brand-dark:#1F4468;
  --brand-light:#E9F0F7;
  --accent:#E07B39;
  --accent-dark:#C4642A;
  --ink:#16212C;
  --text-2:#4B5A68;
  --text-3:#7B8996;
  --line:#E2E8EF;
  --bg:#F6F8FA;
  --bg-alt:#EDF2F7;
  --card:#FFFFFF;
  --ok:#2E8B6F;
  --err:#C0392B;
  --mint:#E6F2EE;
  --r-card:14px;
  --r-btn:10px;
  --r-img:14px;
  --sh-card:0 1px 2px rgba(20,40,70,.06), 0 8px 24px -12px rgba(20,40,70,.14);
  --sh-hover:0 12px 32px -12px rgba(20,40,70,.22);
  --container:1200px;
  --font-cn:"PingFang SC","Hiragino Sans GB","Microsoft YaHei UI","Source Han Sans SC","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;
  padding-bottom:84px;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;border:0;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease,border-color .2s ease;}
a:hover{color:var(--brand-dark);}
button{font-family:inherit;font-size:inherit;border:0;background:none;cursor:pointer;}
ul,ol{padding-left:22px;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:3px solid rgba(46,94,140,.28);outline-offset:2px;border-radius:6px;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}
.grid-x{display:flex;flex-flow:row wrap;}
.grid-margin-x{margin-left:-12px;margin-right:-12px;}
.grid-margin-x > .cell{padding-left:12px;padding-right:12px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 24px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  line-height:1.4;
  border:1px solid transparent;
  transition:background-color .2s ease,color .2s ease,box-shadow .2s ease,transform .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 1px 2px rgba(20,40,70,.08);}
.btn-primary:hover{background:var(--accent-dark);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px -12px rgba(196,100,42,.55);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:#fff;color:var(--brand);border-color:rgba(46,94,140,.3);}
.btn-ghost:hover{background:var(--brand-light);color:var(--brand-dark);border-color:rgba(46,94,140,.5);}
.btn-text{color:var(--brand);padding:6px 2px;font-weight:600;}
.btn-text:hover{color:var(--brand-dark);text-decoration:underline;text-underline-offset:3px;}
.btn-sm{padding:9px 18px;font-size:14px;}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .24s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 20px -14px rgba(20,40,70,.35);}
.header-inner{
  display:flex;
  align-items:center;
  gap:24px;
  height:68px;
}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:34px;height:34px;border-radius:9px;
  background:var(--brand);
  display:inline-flex;align-items:center;justify-content:center;
  flex:0 0 auto;
}
.brand-mark svg{width:19px;height:19px;}
.brand-text{
  font-size:18px;font-weight:700;color:var(--ink);letter-spacing:.01em;line-height:1;
}
.nav-chips{
  display:flex;
  align-items:center;
  gap:8px;
  flex:1 1 auto;
  overflow-x:auto;
  scrollbar-width:none;
  -ms-overflow-style:none;
  padding:4px 2px;
}
.nav-chips::-webkit-scrollbar{display:none;}
.chip{
  position:relative;
  display:inline-flex;
  align-items:center;
  padding:8px 15px;
  border-radius:999px;
  font-size:14px;
  font-weight:500;
  color:var(--text-2);
  white-space:nowrap;
  transition:background-color .2s ease,color .2s ease;
}
.chip:hover{background:var(--brand-light);color:var(--brand);}
.chip.is-active{background:var(--brand-light);color:var(--brand);font-weight:600;}
.chip.is-active::after{
  content:"";
  position:absolute;
  left:16px;right:16px;bottom:2px;
  height:2px;border-radius:2px;
  background:var(--brand);
}
.chip.is-active::before{
  content:"";
  width:6px;height:6px;border-radius:50%;
  background:var(--brand);
  margin-right:7px;
}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.nav-toggle{
  display:none;
  flex-direction:column;
  justify-content:center;
  gap:5px;
  width:42px;height:42px;
  border-radius:10px;
  border:1px solid var(--line);
  background:#fff;
  align-items:center;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);transition:transform .2s ease,opacity .2s ease;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

.progress-track{position:absolute;left:0;right:0;bottom:-1px;height:2px;background:transparent;}
.progress-bar{display:block;height:2px;width:0;background:var(--brand);border-radius:0 2px 2px 0;transition:width .1s linear;}

.drawer{
  display:none;
  position:fixed;
  left:0;right:0;top:68px;
  z-index:55;
  background:#fff;
  border-bottom:1px solid var(--line);
  box-shadow:0 18px 32px -22px rgba(20,40,70,.35);
  padding:18px 24px 24px;
}
.drawer.is-open{display:block;}
.drawer .chip{display:flex;width:100%;border-radius:10px;padding:12px 14px;margin-bottom:6px;font-size:15px;}
.drawer .chip.is-active::after{display:none;}
.drawer-cta{margin-top:12px;}

/* ============ 主体 ============ */
.page-main{padding:28px 0 0;}
.breadcrumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:14px;
  color:var(--text-3);
}
.breadcrumb a{color:var(--text-2);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{color:#C4CDD6;}
.breadcrumb .current{
  color:var(--text-3);
  max-width:min(420px,60vw);
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}

.layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 240px;
  gap:56px;
  align-items:start;
  margin-top:8px;
}
.article-col{width:100%;max-width:760px;margin:0 auto;min-width:0;}

.article-head{padding:26px 0 0;}
.article-head .eyebrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 12px;
  border-radius:999px;
  background:var(--mint);
  color:var(--ok);
  font-size:12.5px;
  font-weight:600;
  letter-spacing:.04em;
}
.article-title{
  font-size:clamp(26px,3vw,34px);
  line-height:1.32;
  font-weight:700;
  letter-spacing:.01em;
  margin:18px 0 16px;
  color:var(--ink);
}
.meta-row{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:10px;
  font-size:13px;
  color:var(--text-3);
}
.meta-chip{
  display:inline-flex;
  align-items:center;
  padding:4px 11px;
  border-radius:999px;
  background:var(--brand-light);
  color:var(--brand);
  font-size:12.5px;
  font-weight:600;
  letter-spacing:.02em;
}
.meta-divider{width:1px;height:12px;background:var(--line);display:inline-block;}
.article-cover{
  margin:28px 0 0;
  border-radius:var(--r-img);
  overflow:hidden;
  aspect-ratio:21/9;
  background:var(--brand-light);
}
.article-cover img{width:100%;height:100%;object-fit:cover;}

/* ============ 正文排版 ============ */
.article-body{
  margin-top:36px;
  font-size:16px;
  line-height:1.9;
  color:var(--ink);
  word-break:break-word;
}
.article-body p{margin:0 0 18px;}
.article-body > *:first-child{margin-top:0;}
.article-body h2{
  position:relative;
  font-size:24px;
  line-height:1.35;
  font-weight:700;
  margin:40px 0 14px;
  padding-left:14px;
  color:var(--ink);
}
.article-body h2::before{
  content:"";
  position:absolute;
  left:0;top:.28em;bottom:.28em;
  width:4px;border-radius:2px;
  background:var(--brand);
}
.article-body h3{font-size:19px;line-height:1.45;font-weight:600;margin:28px 0 10px;}
.article-body h4{font-size:16px;line-height:1.5;font-weight:600;margin:22px 0 8px;color:var(--text-2);}
.article-body ul,.article-body ol{margin:0 0 18px;padding-left:22px;}
.article-body li{margin-bottom:8px;}
.article-body li::marker{color:var(--brand);font-weight:600;}
.article-body blockquote{
  margin:24px 0;
  border-left:3px solid var(--brand);
  background:var(--bg);
  padding:16px 20px;
  border-radius:0 12px 12px 0;
  color:var(--text-2);
  font-style:normal;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:12px;margin:24px auto;}
.article-body figure{margin:24px 0;}
.article-body figcaption{
  font-size:13px;
  color:var(--text-3);
  text-align:center;
  margin-top:10px;
}
.article-body a{color:var(--brand);border-bottom:1px solid rgba(46,94,140,.3);}
.article-body a:hover{color:var(--brand-dark);border-bottom-color:var(--brand-dark);}
.article-body table{
  width:100%;
  border-collapse:collapse;
  margin:24px 0;
  font-size:14.5px;
  display:block;
  overflow-x:auto;
}
.article-body thead{background:var(--brand-light);}
.article-body th{
  color:var(--brand-dark);
  font-weight:600;
  text-align:left;
  padding:11px 14px;
  border-bottom:1px solid var(--line);
  white-space:nowrap;
}
.article-body td{
  padding:11px 14px;
  border-bottom:1px solid var(--line);
  color:var(--text-2);
  vertical-align:top;
}
.article-body tbody tr:nth-child(even){background:#FAFCFE;}
.article-body code{
  background:var(--bg-alt);
  border-radius:6px;
  padding:2px 6px;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:13px;
  color:var(--brand-dark);
}
.article-body pre{
  background:#12202E;
  color:#E6EDF4;
  padding:18px 20px;
  border-radius:12px;
  overflow-x:auto;
  font-size:13.5px;
  line-height:1.7;
}
.article-body pre code{background:none;color:inherit;padding:0;}
.article-body hr{border:0;border-top:1px solid var(--line);margin:36px 0;}

.empty-state{
  margin-top:36px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:48px 28px;
  text-align:center;
  box-shadow:var(--sh-card);
}
.empty-state i{font-size:34px;color:var(--brand);display:block;margin-bottom:14px;}
.empty-state h2{font-size:20px;font-weight:600;margin-bottom:10px;}
.empty-state p{font-size:15px;color:var(--text-2);margin-bottom:20px;}

/* ============ 目录 ============ */
.toc-box{
  position:sticky;
  top:96px;
  border-left:2px solid var(--line);
  padding-left:18px;
}
.toc-title{font-size:14px;font-weight:600;color:var(--ink);margin-bottom:12px;}
.toc-list{list-style:none;margin:0;padding:0;}
.toc-list li{margin-bottom:4px;}
.toc-list a{
  display:block;
  font-size:14px;
  line-height:1.6;
  color:var(--text-2);
  padding:6px 0 6px 10px;
  border-left:2px solid transparent;
  margin-left:-20px;
  padding-left:18px;
  transition:color .2s ease,border-color .2s ease,background-color .2s ease;
}
.toc-list a:hover{color:var(--brand);background:rgba(46,94,140,.05);}
.toc-list a.is-current{color:var(--brand);font-weight:600;border-left-color:var(--brand);}

/* ============ 文末 ============ */
.article-foot{margin-top:56px;}
.foot-block{border-top:1px solid var(--line);padding-top:28px;margin-top:28px;}
.foot-title{
  font-size:20px;
  font-weight:700;
  margin-bottom:20px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
}
.foot-title a{font-size:14px;font-weight:600;}
.related-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:20px;
}
.mini-card{
  display:flex;
  flex-direction:column;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-card);
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.mini-card:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);border-color:rgba(46,94,140,.25);}
.mini-cover{aspect-ratio:16/9;background:var(--brand-light);overflow:hidden;}
.mini-cover img{width:100%;height:100%;object-fit:cover;}
.mini-body{padding:16px 18px 18px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto;}
.mini-tag{
  align-self:flex-start;
  padding:3px 10px;
  border-radius:999px;
  background:var(--brand-light);
  color:var(--brand);
  font-size:12.5px;
  font-weight:600;
}
.mini-title{font-size:16px;line-height:1.5;font-weight:600;color:var(--ink);}
.mini-card:hover .mini-title{color:var(--brand);}
.mini-meta{margin-top:auto;font-size:13px;color:var(--text-3);}

.pager{
  display:flex;
  justify-content:space-between;
  align-items:stretch;
  gap:16px;
  margin-top:28px;
}
.pager-item{
  flex:1 1 0;
  min-width:0;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:16px 18px;
  transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.pager-item:hover{border-color:rgba(46,94,140,.3);box-shadow:var(--sh-card);transform:translateY(-2px);}
.pager-label{font-size:12.5px;color:var(--text-3);letter-spacing:.04em;display:block;margin-bottom:6px;}
.pager-text{font-size:15px;font-weight:600;color:var(--ink);display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.pager-item.is-next{text-align:right;}

/* ============ CTA 横幅 ============ */
.cta-band{
  margin-top:56px;
  background:var(--brand-light);
  border-radius:18px;
  padding:36px 32px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
}
.cta-band h2{font-size:22px;font-weight:700;line-height:1.4;margin-bottom:8px;}
.cta-band p{font-size:15px;color:var(--text-2);}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;flex:0 0 auto;}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:88px;
  background:var(--bg-alt);
  border-top:1px solid var(--line);
  padding-top:64px;
}
.footer-grid{
  display:grid;
  grid-template-columns:2fr 1fr 1fr;
  gap:44px 32px;
}
.footer-about .brand{margin-bottom:16px;}
.footer-about p{font-size:14px;line-height:1.8;color:var(--text-2);max-width:340px;}
.footer-contact{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:var(--text-2);
  margin-top:10px;
}
.footer-contact i{color:var(--brand);font-size:14px;}
.footer-title{font-size:14px;font-weight:600;color:var(--ink);margin-bottom:14px;}
.footer-links{list-style:none;margin:0;padding:0;}
.footer-links li{margin-bottom:10px;}
.footer-links a{
  font-size:14px;
  color:var(--text-2);
  display:inline-block;
  transition:color .2s ease,transform .2s ease;
}
.footer-links a:hover{color:var(--brand);transform:translateX(2px);}
.footer-bottom{
  margin-top:48px;
  border-top:1px solid var(--line);
  padding:20px 0 24px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  flex-wrap:wrap;
  font-size:13px;
  color:var(--text-3);
}
.footer-bottom nav{display:flex;gap:18px;flex-wrap:wrap;}
.footer-bottom a{color:var(--text-3);}
.footer-bottom a:hover{color:var(--brand);}

/* ============ 底部固定转化条 ============ */
.sticky-cta{
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:45;
  background:#fff;
  border-top:1px solid var(--line);
  box-shadow:0 -8px 26px -16px rgba(20,40,70,.4);
  transform:translateY(130%);
  transition:transform .12s ease-out;
  padding-bottom:env(safe-area-inset-bottom);
}
.sticky-cta.is-visible{transform:translateY(0);}
.sticky-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  min-height:64px;
  padding-top:8px;
  padding-bottom:8px;
}
.sticky-text{font-size:14.5px;color:var(--text-2);}
.sticky-actions{display:flex;align-items:center;gap:12px;}
.sticky-close{
  width:34px;height:34px;
  border-radius:50%;
  color:var(--text-3);
  display:inline-flex;align-items:center;justify-content:center;
  transition:background-color .2s ease,color .2s ease;
}
.sticky-close:hover{background:var(--bg-alt);color:var(--ink);}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .layout{grid-template-columns:minmax(0,1fr);gap:0;}
  .toc-box{display:none;}
}
@media (max-width:1023px){
  .nav-chips{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-cta{display:none;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (min-width:1024px){
  .drawer{display:none !important;}
}
@media (max-width:768px){
  .container{padding:0 18px;}
  .page-main{padding:20px 0 0;}
  .article-title{font-size:clamp(22px,6vw,28px);}
  .article-cover{aspect-ratio:16/9;margin-top:22px;}
  .article-body{margin-top:28px;line-height:1.9;}
  .article-body h2{font-size:21px;margin-top:32px;}
  .article-body h3{font-size:18px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:28px 22px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
  .pager{flex-direction:column;}
  .sticky-inner{flex-direction:column;align-items:stretch;gap:10px;padding-top:12px;padding-bottom:12px;}
  .sticky-actions{width:100%;}
  .sticky-actions .btn{flex:1 1 auto;}
  .sticky-close{position:absolute;top:8px;right:10px;}
  .sticky-inner{position:relative;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:560px){
  .related-grid{grid-template-columns:minmax(0,1fr);}
  .header-inner{gap:12px;}
  .brand-text{font-size:16px;}
  .meta-row{font-size:12.5px;}
}

/* roulang page: category1 */
:root{
  --primary:#2E5E8C;
  --primary-dark:#1F4468;
  --primary-light:#E9F0F7;
  --accent:#E07B39;
  --accent-dark:#C4642A;
  --ink:#16212C;
  --sub:#4B5A68;
  --weak:#7B8996;
  --line:#E2E8EF;
  --page:#F6F8FA;
  --alt:#EDF2F7;
  --card:#FFFFFF;
  --ok:#2E8B6F;
  --err:#C0392B;
  --mint:#E6F2EE;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:16px;
  --shadow-card:0 1px 2px rgba(20,40,70,.06),0 8px 24px -12px rgba(20,40,70,.14);
  --shadow-hover:0 12px 32px -12px rgba(20,40,70,.22);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:100px;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei UI","Source Han Sans SC","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--page);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:var(--primary);text-decoration:none;transition:color .2s ease-out}
a:hover{color:var(--primary-dark)}
button,input,textarea,select{font-family:inherit;font-size:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
h1{font-size:clamp(28px,3.4vw,42px);line-height:1.25;font-weight:700;letter-spacing:.01em}
h2{font-size:28px;line-height:1.3;font-weight:700}
h3{font-size:20px;line-height:1.4;font-weight:600}
h4{font-size:16px;line-height:1.5;font-weight:600}
p{color:var(--sub)}
ul,ol{padding-left:0;list-style:none}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}

/* ---------- 通用元素 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;
  padding:13px 24px;border-radius:var(--radius-btn);
  border:1px solid transparent;cursor:pointer;
  transition:background-color .2s ease-out,color .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
  white-space:nowrap;
}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 6px 18px -10px rgba(224,123,57,.9)}
.btn-primary:hover{background:var(--accent-dark);color:#fff;transform:translateY(-1px);box-shadow:0 12px 26px -12px rgba(196,100,42,.95)}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 12px -8px rgba(196,100,42,.9)}
.btn-ghost{background:#fff;color:var(--primary);border-color:rgba(46,94,140,.3)}
.btn-ghost:hover{background:var(--primary-light);color:var(--primary-dark);border-color:rgba(46,94,140,.45)}
.btn:focus-visible,a:focus-visible,summary:focus-visible,.chip:focus-visible{outline:3px solid rgba(46,94,140,.28);outline-offset:2px}
.btn-sm{padding:10px 18px;font-size:14px}

.eyebrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;letter-spacing:.04em;font-weight:600;
  color:var(--primary);background:var(--primary-light);
  padding:6px 14px;border-radius:999px;
}
.section{padding:96px 0}
.section-alt{background:var(--alt)}
.section-head{max-width:760px;margin-bottom:40px}
.section-head .eyebrow{margin-bottom:16px}
.section-head p{margin-top:12px;font-size:16px}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:70;background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .24s ease-out;
}
.site-header.is-scrolled{box-shadow:0 6px 20px -14px rgba(20,40,70,.35)}
.header-inner{display:flex;align-items:center;gap:24px;height:68px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:34px;height:34px;border-radius:9px;
  background:var(--primary);
  display:inline-flex;align-items:center;justify-content:center;
  box-shadow:0 6px 14px -10px rgba(46,94,140,.9);
}
.brand-mark svg{width:19px;height:19px}
.brand-text{font-size:18px;font-weight:700;color:var(--ink);letter-spacing:.01em;white-space:nowrap}
.brand:hover .brand-text{color:var(--primary)}

.nav-chips{
  display:flex;align-items:center;gap:6px;flex:1 1 auto;
  overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;
  padding:4px 2px;
}
.nav-chips::-webkit-scrollbar{display:none}
.chip{
  display:inline-flex;align-items:center;gap:6px;white-space:nowrap;
  font-size:14px;font-weight:500;color:var(--sub);
  padding:8px 15px;border-radius:999px;border:1px solid transparent;
  transition:background-color .2s ease-out,color .2s ease-out;
}
.chip:hover{background:var(--page);color:var(--primary)}
.chip.is-active{background:var(--primary-light);color:var(--primary);font-weight:600}
.chip.is-active::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--primary);
}
.header-right{display:flex;align-items:center;gap:12px;flex:0 0 auto;margin-left:auto}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:10px;
  border:1px solid var(--line);background:#fff;color:var(--ink);cursor:pointer;
}
.nav-toggle:hover{background:var(--primary-light);color:var(--primary);border-color:rgba(46,94,140,.3)}
.mobile-drawer{
  position:fixed;top:68px;left:0;right:0;z-index:60;
  background:#fff;border-bottom:1px solid var(--line);
  box-shadow:0 18px 30px -22px rgba(20,40,70,.5);
  padding:14px 20px 22px;
  display:flex;flex-direction:column;gap:6px;
  transform:translateY(-14px);opacity:0;visibility:hidden;
  transition:transform .22s ease-out,opacity .22s ease-out,visibility .22s;
}
.mobile-drawer.is-open{transform:none;opacity:1;visibility:visible}
.mobile-drawer .chip{width:100%;justify-content:flex-start;padding:12px 16px;border-radius:12px;font-size:15px}
.mobile-drawer .drawer-cta{margin-top:10px}
body.drawer-open{overflow:hidden}

/* ---------- 顶部横幅 ---------- */
.page-banner{
  background:var(--alt);
  border-bottom:1px solid var(--line);
  padding:56px 0;
}
.banner-grid{row-gap:28px}
.banner-sub{margin-top:14px;font-size:17px;color:var(--sub);max-width:520px}
.banner-actions{margin-top:26px;display:flex;flex-wrap:wrap;gap:12px}
.banner-media img{
  width:100%;height:230px;object-fit:cover;
  border-radius:var(--radius-img);background:var(--primary-light);
  box-shadow:var(--shadow-card);
}

/* ---------- 两栏主体 ---------- */
.toc-card{
  position:sticky;top:96px;
  background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:22px 20px;
  box-shadow:var(--shadow-card);
}
.toc-title{font-size:14px;font-weight:600;color:var(--ink);letter-spacing:.04em;margin-bottom:14px}
.toc-list{display:flex;flex-direction:column;gap:2px}
.toc-list a{
  display:block;font-size:14px;color:var(--sub);
  padding:9px 12px;border-radius:8px;border-left:2px solid transparent;
  transition:background-color .2s ease-out,color .2s ease-out,border-color .2s ease-out;
}
.toc-list a:hover{background:var(--page);color:var(--primary)}
.toc-list a.is-current{color:var(--primary);font-weight:600;background:var(--primary-light);border-left-color:var(--primary)}
.toc-note{margin-top:18px;padding-top:16px;border-top:1px solid var(--line);font-size:13px;color:var(--weak);line-height:1.7}

.content-blocks{display:flex;flex-direction:column;gap:64px}
.content-block h2{
  position:relative;padding-left:16px;margin-bottom:18px;
}
.content-block h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:4px;background:var(--primary);
}
.content-block p{margin-bottom:16px}
.block-figure{margin-top:22px}
.block-figure img{
  width:100%;height:250px;object-fit:cover;
  border-radius:var(--radius-img);background:var(--primary-light);
}
.block-figure figcaption{margin-top:10px;font-size:13px;color:var(--weak);text-align:center}

.check-list{display:flex;flex-direction:column;gap:12px;margin:20px 0 6px}
.check-list li{
  position:relative;padding-left:22px;font-size:15.5px;color:var(--sub);line-height:1.8;
}
.check-list li::before{
  content:"";position:absolute;left:0;top:10px;width:8px;height:8px;border-radius:2px;background:var(--primary);
}
.check-list strong{color:var(--ink);font-weight:600}

.step-list{display:flex;flex-direction:column;gap:18px;margin-top:22px}
.step-item{
  display:flex;gap:16px;align-items:flex-start;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:18px 20px;transition:box-shadow .24s ease-out,transform .24s ease-out,border-color .24s ease-out;
}
.step-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(46,94,140,.2)}
.step-num{
  flex:0 0 auto;width:38px;height:38px;border-radius:10px;
  background:var(--primary-light);color:var(--primary);
  display:flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:700;letter-spacing:.02em;
}
.step-body h3{font-size:16.5px;margin-bottom:6px}
.step-body p{font-size:15px;margin:0}

.mini-cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:22px}
.mini-card{
  background:#fff;border-left:4px solid var(--primary);border-radius:0 12px 12px 0;
  padding:16px 18px;border-top:1px solid var(--line);
  border-right:1px solid var(--line);border-bottom:1px solid var(--line);
}
.mini-card h3{font-size:16px;margin-bottom:6px}
.mini-card p{font-size:14.5px;margin:0}

.order-list{counter-reset:ord;display:flex;flex-direction:column;gap:14px;margin-top:20px}
.order-list li{
  position:relative;padding-left:44px;font-size:15.5px;color:var(--sub);line-height:1.8;
}
.order-list li::before{
  counter-increment:ord;content:counter(ord,decimal-leading-zero);
  position:absolute;left:0;top:2px;
  font-size:13px;font-weight:700;color:var(--primary);
  background:var(--primary-light);border-radius:8px;
  width:30px;height:26px;display:flex;align-items:center;justify-content:center;
}
.order-list strong{color:var(--ink);font-weight:600}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:800px;margin:0 auto}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  position:relative;list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;padding:14px 40px 14px 0;
  font-size:16px;font-weight:600;color:var(--ink);
  transition:background-color .2s ease-out;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"";position:absolute;right:6px;top:50%;
  width:14px;height:14px;margin-top:-7px;
  background:
    linear-gradient(var(--primary),var(--primary)) center/14px 2px no-repeat,
    linear-gradient(var(--primary),var(--primary)) center/2px 14px no-repeat;
  transition:transform .2s ease-out;
}
.faq-item[open] summary::after{
  transform:rotate(135deg);
}
.faq-item summary:hover{background:var(--page)}
.faq-item[open] summary{color:var(--primary)}
.faq-answer{
  position:relative;padding:0 40px 20px 16px;margin-top:0;
  font-size:15px;color:var(--sub);line-height:1.8;
}
.faq-answer::before{
  content:"";position:absolute;left:0;top:4px;bottom:22px;width:3px;border-radius:3px;background:var(--primary);
}

/* ---------- CTA 横幅 ---------- */
.cta-band{background:var(--primary-light);padding:56px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap}
.cta-inner h2{font-size:24px;margin-bottom:8px}
.cta-inner p{margin:0;font-size:15.5px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--alt);border-top:1px solid var(--line);padding:64px 0 0}
.footer-grid{row-gap:36px}
.footer-about .brand{margin-bottom:16px}
.footer-about p{font-size:14px;color:var(--sub);max-width:340px;margin-bottom:16px}
.footer-contact{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--sub);margin-bottom:8px}
.footer-contact i{color:var(--primary);width:16px;text-align:center}
.footer-title{font-size:14px;font-weight:600;color:var(--ink);margin-bottom:14px;letter-spacing:.03em}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{
  display:inline-block;font-size:14px;color:var(--sub);
  transition:color .2s ease-out,transform .2s ease-out;
}
.footer-links a:hover{color:var(--primary);transform:translateX(2px)}
.footer-bottom{
  margin-top:48px;padding:20px 0;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--weak);
}
.footer-bottom nav{display:flex;gap:18px}
.footer-bottom a{color:var(--weak);font-size:13px}
.footer-bottom a:hover{color:var(--primary)}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .nav-chips{display:none}
  .nav-toggle{display:inline-flex}
  .header-right .btn-cta{display:none}
  .section{padding:72px 0}
  .page-banner{padding:48px 0}
  .banner-media img{height:210px}
  .toc-card{position:static;margin-bottom:32px}
  .content-blocks{gap:56px}
}
@media (max-width:768px){
  body{font-size:15.5px}
  h2{font-size:22px}
  h3{font-size:18px}
  .section{padding:56px 0}
  .header-inner{height:60px;gap:12px}
  .brand-text{font-size:16px}
  .mobile-drawer{top:60px}
  .banner-sub{font-size:16px}
  .banner-media img{height:180px}
  .block-figure img{height:200px}
  .mini-cards{grid-template-columns:1fr}
  .cta-inner h2{font-size:21px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  .container{padding:0 16px}
  h1{font-size:26px}
  .btn{width:100%;padding:14px 20px}
  .banner-actions{flex-direction:column;gap:10px}
  .step-item{flex-direction:column;gap:12px}
  .cta-inner .btn{width:100%}
  .faq-item summary{font-size:15.5px}
}

/* roulang page: category2 */
:root{
  --primary:#2E5E8C;
  --primary-dark:#1F4468;
  --primary-light:#E9F0F7;
  --accent:#E07B39;
  --accent-dark:#C4642A;
  --ink:#16212C;
  --text-2:#4B5A68;
  --text-3:#7B8996;
  --line:#E2E8EF;
  --bg:#F6F8FA;
  --bg-alt:#EDF2F7;
  --card:#FFFFFF;
  --success:#2E8B6F;
  --danger:#C0392B;
  --mint:#E6F2EE;
  --radius-card:14px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(20,40,70,.06),0 8px 24px -12px rgba(20,40,70,.14);
  --shadow-2:0 12px 32px -12px rgba(20,40,70,.22);
  --container:1200px;
  --font-cn:"PingFang SC","Hiragino Sans GB","Microsoft YaHei UI","Source Han Sans SC","Noto Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;border-radius:12px;}
a{color:var(--primary);text-decoration:none;transition:color .18s ease,text-decoration-color .18s ease;}
a:hover{color:var(--primary-dark);}
button,input{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4{margin:0;color:var(--ink);letter-spacing:.01em;font-weight:700;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
.container{max-width:var(--container);margin:0 auto;padding:0 20px;width:100%;}
.section{padding:96px 0;}
.section--tight{padding:72px 0;}
.section--alt{background:var(--bg-alt);}
.section--white{background:#fff;}
.section-head{max-width:720px;margin-bottom:44px;}
.section-head.is-center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;letter-spacing:.04em;font-weight:600;
  color:var(--primary);background:var(--primary-light);
  padding:6px 14px;border-radius:999px;margin-bottom:18px;
}
h1{font-size:clamp(32px,4.2vw,44px);line-height:1.25;font-weight:700;}
h2{font-size:28px;line-height:1.3;}
h3{font-size:20px;line-height:1.4;font-weight:600;}
h4{font-size:16px;line-height:1.5;font-weight:600;}
.lead{font-size:17px;color:var(--text-2);line-height:1.85;}
.section-head p{margin-top:14px;font-size:16px;color:var(--text-2);}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:background-color .18s ease,color .18s ease,box-shadow .18s ease,transform .18s ease,border-color .18s ease;
}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 6px 16px -10px rgba(224,123,57,.9);}
.btn-primary:hover{background:var(--accent-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:#fff;color:var(--primary);border-color:rgba(46,94,140,.3);}
.btn-ghost:hover{background:var(--primary-light);color:var(--primary-dark);border-color:rgba(46,94,140,.45);}
.btn-link{background:none;border:none;color:var(--primary);padding:0;font-weight:600;cursor:pointer;}
.btn-link:hover{text-decoration:underline;text-underline-offset:3px;}
.btn:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid rgba(46,94,140,.28);outline-offset:2px;}
.btn[disabled]{opacity:.45;pointer-events:none;}

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid var(--line);transition:box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 20px -14px rgba(20,40,70,.35);}
.header-inner{
  display:flex;align-items:center;gap:20px;height:68px;
}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:34px;height:34px;border-radius:9px;background:var(--primary);
  display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto;
}
.brand-mark svg{width:19px;height:19px;}
.brand-text{font-size:18px;font-weight:700;color:var(--ink);letter-spacing:.01em;}
.nav-chips{
  display:flex;align-items:center;gap:6px;flex:1 1 auto;justify-content:center;
  min-width:0;overflow-x:auto;scrollbar-width:none;
}
.nav-chips::-webkit-scrollbar{display:none;}
.chip{
  display:inline-flex;align-items:center;gap:6px;white-space:nowrap;
  padding:8px 14px;border-radius:999px;font-size:14px;font-weight:500;
  color:var(--text-2);background:transparent;border:1px solid transparent;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease;
}
.chip:hover{background:var(--primary-light);color:var(--primary-dark);}
.chip.is-active,.chip[aria-current="page"]{
  background:var(--primary-light);color:var(--primary);font-weight:600;
  border-color:rgba(46,94,140,.18);
}
.chip.is-active::before,.chip[aria-current="page"]::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--primary);
}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);
  background:#fff;color:var(--ink);cursor:pointer;align-items:center;justify-content:center;
}
.nav-toggle:hover{background:var(--primary-light);color:var(--primary);}
.mobile-drawer{
  display:none;border-top:1px solid var(--line);background:#fff;padding:14px 0 18px;
}
.mobile-drawer.is-open{display:block;}
.mobile-drawer .chip{display:flex;width:100%;justify-content:flex-start;padding:11px 14px;}
.mobile-drawer .drawer-inner{display:flex;flex-direction:column;gap:4px;}
.mobile-drawer .btn{margin-top:12px;width:100%;}

/* 顶部横幅 */
.page-hero{
  background:linear-gradient(180deg,#F6F8FA 0%,#EAF1F8 100%);
  border-bottom:1px solid var(--line);
  padding:64px 0 56px;position:relative;overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;inset:0;opacity:.5;pointer-events:none;
  background-image:radial-gradient(rgba(46,94,140,.12) 1px,transparent 1px);
  background-size:18px 18px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.6),transparent 78%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.6),transparent 78%);
}
.page-hero .container{position:relative;z-index:1;}
.hero-center{max-width:760px;margin:0 auto;text-align:center;}
.hero-center h1{margin-bottom:16px;}
.hero-center .lead{font-size:18px;color:var(--text-2);max-width:640px;margin:0 auto;}
.hero-search{
  margin:28px auto 0;max-width:560px;display:flex;gap:10px;
  background:#fff;border:1px solid var(--line);border-radius:999px;
  padding:8px 8px 8px 20px;box-shadow:var(--shadow-1);
}
.hero-search input{
  flex:1 1 auto;border:none;background:transparent;height:44px;
  color:var(--ink);font-size:15px;min-width:0;
}
.hero-search input:focus{outline:none;}
.hero-search input::placeholder{color:var(--text-3);}
.hero-search .btn{border-radius:999px;flex:0 0 auto;}
.hero-note{margin-top:16px;font-size:13.5px;color:var(--text-3);}

/* 时间轴 */
.timeline{position:relative;max-width:880px;margin:0 auto;padding-left:6px;}
.timeline::before{
  content:"";position:absolute;left:25px;top:12px;bottom:24px;width:2px;background:var(--primary-light);
}
.tl-item{position:relative;padding-left:70px;padding-bottom:40px;}
.tl-item:last-child{padding-bottom:0;}
.tl-node{
  position:absolute;left:0;top:0;width:50px;height:50px;border-radius:50%;
  background:#fff;border:2px solid var(--primary);color:var(--primary);
  display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:700;letter-spacing:.02em;
}
.tl-body{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px 26px;box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.tl-body:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(46,94,140,.2);}
.tl-body h3{margin-bottom:10px;}
.tl-body p{font-size:15px;color:var(--text-2);line-height:1.8;}
.tl-list{margin-top:14px;display:flex;flex-direction:column;gap:8px;}
.tl-list li{
  position:relative;padding-left:18px;font-size:15px;color:var(--text-2);line-height:1.75;
}
.tl-list li::before{
  content:"";position:absolute;left:0;top:10px;width:7px;height:7px;border-radius:2px;background:var(--primary);
}

/* 图文交替 */
.split-row{display:flex;flex-wrap:wrap;align-items:center;margin-left:-16px;margin-right:-16px;}
.split-row + .split-row{margin-top:64px;}
.split-cell{padding-left:16px;padding-right:16px;width:100%;}
.split-media{flex:0 0 auto;}
.split-text{flex:0 0 auto;}
.split-media img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:14px;background:var(--primary-light);box-shadow:var(--shadow-1);}
.split-index{
  font-size:40px;font-weight:700;line-height:1;color:rgba(46,94,140,.28);
  margin-bottom:12px;font-variant-numeric:tabular-nums;
}
.split-text h3{margin-bottom:12px;}
.split-text > p{font-size:15px;color:var(--text-2);}
.split-list{margin-top:16px;display:flex;flex-direction:column;gap:10px;}
.split-list li{position:relative;padding-left:18px;font-size:15px;color:var(--text-2);}
.split-list li::before{
  content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:2px;background:var(--primary);
}

/* 速查卡 */
.symptom-grid{display:flex;flex-wrap:wrap;margin-left:-14px;margin-right:-14px;}
.symptom-cell{padding:0 14px 28px;width:100%;}
.symptom-card{
  height:100%;background:#fff;border:1px solid var(--line);border-left:4px solid var(--primary);
  border-radius:var(--radius-card);padding:24px 24px 22px;
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.symptom-card:hover{transform:translateY(-2px);border-left-color:var(--accent);box-shadow:var(--shadow-1);}
.symptom-icon{
  width:40px;height:40px;border-radius:50%;background:var(--primary-light);color:var(--primary);
  display:flex;align-items:center;justify-content:center;margin-bottom:16px;font-size:17px;
}
.symptom-card h3{font-size:18px;margin-bottom:10px;}
.symptom-card p{font-size:15px;color:var(--text-2);line-height:1.8;}
.symptom-tag{
  display:inline-block;margin-top:14px;font-size:12.5px;letter-spacing:.04em;font-weight:600;
  color:var(--success);background:var(--mint);padding:4px 10px;border-radius:999px;
}

/* 数据条 */
.stat-bar{
  display:flex;flex-wrap:wrap;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-card);box-shadow:var(--shadow-1);overflow:hidden;
}
.stat-item{
  flex:1 1 25%;padding:26px 22px;text-align:center;border-right:1px solid var(--line);
}
.stat-item:last-child{border-right:none;}
.stat-num{font-size:36px;font-weight:700;color:var(--ink);line-height:1.1;font-variant-numeric:tabular-nums;}
.stat-num span{font-size:14px;font-weight:600;color:var(--text-3);margin-left:4px;}
.stat-label{margin-top:8px;font-size:14px;color:var(--text-2);}

/* FAQ */
.faq{max-width:800px;margin:0 auto;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1);}
.faq-item + .faq-item{border-top:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:none;border:none;text-align:left;cursor:pointer;
  padding:0 24px;min-height:56px;font-size:16px;font-weight:600;color:var(--ink);
  transition:background-color .18s ease;
}
.faq-q:hover{background:var(--bg);}
.faq-item.is-open .faq-q{color:var(--primary);box-shadow:inset 3px 0 0 var(--primary);}
.faq-sign{
  position:relative;width:16px;height:16px;flex:0 0 auto;
  transition:transform .2s ease;
}
.faq-sign::before,.faq-sign::after{
  content:"";position:absolute;background:var(--primary);border-radius:2px;
}
.faq-sign::before{left:0;top:7px;width:16px;height:2px;}
.faq-sign::after{left:7px;top:0;width:2px;height:16px;}
.faq-item.is-open .faq-sign{transform:rotate(180deg);}
.faq-item.is-open .faq-sign::after{opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s ease;}
.faq-a p{padding:4px 24px 22px;font-size:15px;color:var(--text-2);line-height:1.8;}

/* CTA 横幅 */
.cta-band{
  background:var(--primary-light);border:1px solid rgba(46,94,140,.16);
  border-radius:16px;padding:36px 34px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:22px;
}
.cta-band h2{font-size:24px;margin-bottom:8px;}
.cta-band p{font-size:15px;color:var(--text-2);max-width:620px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* 页脚 */
.site-footer{background:var(--bg-alt);border-top:1px solid var(--line);padding:64px 0 0;margin-top:0;}
.footer-grid{padding-bottom:40px;}
.footer-about .brand{margin-bottom:16px;}
.footer-about p{font-size:14px;color:var(--text-2);max-width:340px;}
.footer-contact{display:flex;align-items:center;gap:10px;margin-top:12px;font-size:14px;color:var(--text-2);}
.footer-contact i{color:var(--primary);font-size:15px;}
.footer-title{font-size:14px;font-weight:600;color:var(--ink);margin-bottom:16px;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{font-size:14px;color:var(--text-2);display:inline-block;transition:color .18s ease,transform .18s ease;}
.footer-links a:hover{color:var(--primary);transform:translateX(-2px);}
.footer-bottom{
  border-top:1px solid var(--line);padding:20px 0;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--text-3);
}
.footer-bottom nav{display:flex;gap:18px;}
.footer-bottom a{font-size:13px;color:var(--text-3);}
.footer-bottom a:hover{color:var(--primary);}
.grid-x{margin-left:-16px;margin-right:-16px;}
.grid-x > .cell{padding-left:16px;padding-right:16px;}

@media screen and (min-width:768px){
  .symptom-cell{width:50%;}
  .split-media,.split-text{width:50%;}
}
@media screen and (min-width:1024px){
  .split-row{gap:24px;}
  .split-row.is-reverse .split-media{order:2;}
  .split-row.is-reverse .split-text{order:1;}
  .split-media{padding-right:24px;}
  .split-text{padding-left:24px;}
  .split-row.is-reverse .split-media{padding-right:16px;padding-left:24px;}
  .split-row.is-reverse .split-text{padding-left:16px;padding-right:24px;}
  .symptom-cell{width:25%;}
}
@media screen and (max-width:1023px){
  .nav-chips{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-actions .btn-primary{display:none;}
  .section{padding:64px 0;}
}
@media screen and (max-width:767px){
  body{font-size:15.5px;}
  h2{font-size:22px;}
  h3{font-size:18px;}
  .section{padding:56px 0;}
  .page-hero{padding:48px 0 44px;}
  .hero-search{flex-direction:column;border-radius:14px;padding:14px;gap:10px;}
  .hero-search input{height:40px;padding:0 4px;}
  .hero-search .btn{width:100%;}
  .timeline::before{left:17px;}
  .tl-item{padding-left:50px;padding-bottom:28px;}
  .tl-node{width:36px;height:36px;font-size:13px;border-width:2px;}
  .tl-body{padding:20px 18px;}
  .stat-item{flex:1 1 50%;border-right:none;border-bottom:1px solid var(--line);}
  .stat-item:nth-child(2n){border-right:none;}
  .stat-item:nth-last-child(-n+2){border-bottom:none;}
  .cta-band{padding:26px 22px;}
  .site-footer{padding-top:48px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media screen and (max-width:480px){
  .hero-center h1{font-size:26px;}
  .stat-num{font-size:30px;}
  .faq-q{padding:0 18px;font-size:15px;}
  .faq-a p{padding:4px 18px 20px;}
}

/* roulang page: category3 */
:root{
  --primary:#2E5E8C;
  --primary-dark:#1F4468;
  --primary-light:#E9F0F7;
  --accent:#E07B39;
  --accent-dark:#C4642A;
  --ink:#16212C;
  --text-2:#4B5A68;
  --text-3:#7B8996;
  --line:#E2E8EF;
  --bg:#F6F8FA;
  --bg-alt:#EDF2F7;
  --card:#FFFFFF;
  --ok:#2E8B6F;
  --ok-bg:#E6F2EE;
  --err:#C0392B;
  --radius-card:14px;
  --radius-btn:10px;
  --shadow:0 1px 2px rgba(20,40,70,.06),0 8px 24px -12px rgba(20,40,70,.14);
  --shadow-hover:0 12px 32px -12px rgba(20,40,70,.22);
  --container:1200px;
}

*,*::before,*::after{box-sizing:border-box;}

html{-webkit-text-size-adjust:100%;}

body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei UI","Source Han Sans SC","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}

h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;}
h1{font-size:clamp(26px,3.4vw,42px);line-height:1.25;letter-spacing:.01em;}
h2{font-size:28px;line-height:1.3;}
h3{font-size:20px;line-height:1.4;font-weight:600;}
h4{font-size:16px;line-height:1.5;font-weight:600;}
p{margin:0 0 16px;}
p:last-child{margin-bottom:0;}
a{color:var(--primary);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--primary-dark);}
img{max-width:100%;display:block;border:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
input,select,textarea{font-family:inherit;}
:focus-visible{outline:3px solid rgba(46,94,140,.28);outline-offset:2px;}

.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 20px;
}

@media (min-width:1024px){
  .container{padding:0 24px;}
}

/* 栅格修正 */
.grid-margin-x{margin-left:-12px;margin-right:-12px;}
.grid-margin-x>.cell{padding-left:12px;padding-right:12px;}
.grid-x>.cell{min-width:0;}

@media (min-width:1024px){
  .grid-margin-x{margin-left:-16px;margin-right:-16px;}
  .grid-margin-x>.cell{padding-left:16px;padding-right:16px;}
}

/* 按钮 */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 24px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  border:1px solid transparent;
  cursor:pointer;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
  text-align:center;
}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 1px 2px rgba(20,40,70,.08);}
.btn-primary:hover{background:var(--accent-dark);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px -10px rgba(196,100,42,.6);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:#fff;color:var(--primary);border-color:rgba(46,94,140,.3);}
.btn-ghost:hover{background:var(--primary-light);color:var(--primary-dark);border-color:rgba(46,94,140,.5);}
.btn-sm{padding:9px 18px;font-size:14px;}
.btn-block{width:100%;}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.45;pointer-events:none;transform:none;}

.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--primary);
}
.link-arrow i{font-size:12px;transition:transform .18s ease;}
.link-arrow:hover i{transform:translateX(3px);}

/* 顶部导航 */
.site-header{
  position:sticky;
  top:0;
  z-index:120;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 20px -14px rgba(20,40,70,.5);}

.header-inner{
  height:68px;
  display:flex;
  align-items:center;
  gap:20px;
}

.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  color:var(--ink);
}
.brand:hover{color:var(--ink);}
.brand-mark{
  width:34px;
  height:34px;
  border-radius:10px;
  background:var(--primary);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  flex:0 0 34px;
}
.brand-mark svg{width:20px;height:20px;}
.brand-text{font-size:18px;font-weight:700;letter-spacing:.01em;white-space:nowrap;}

.nav-chips{
  flex:1 1 auto;
  display:flex;
  align-items:center;
  justify-content:center;
  gap:6px;
  overflow-x:auto;
  scrollbar-width:none;
  -ms-overflow-style:none;
  padding:4px 2px;
}
.nav-chips::-webkit-scrollbar{display:none;}

.chip{
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:8px 15px;
  border-radius:999px;
  font-size:14px;
  font-weight:500;
  color:var(--text-2);
  white-space:nowrap;
  transition:background-color .18s ease,color .18s ease;
}
.chip:hover{background:var(--primary-light);color:var(--primary);}
.chip.is-active{background:var(--primary-light);color:var(--primary);font-weight:600;}
.chip.is-active::after{content:"";width:6px;height:6px;border-radius:50%;background:var(--primary);}

.header-actions{
  display:flex;
  align-items:center;
  gap:12px;
  flex:0 0 auto;
}

.nav-toggle{
  display:none;
  width:42px;
  height:38px;
  border:1px solid var(--line);
  border-radius:10px;
  background:#fff;
  position:relative;
  cursor:pointer;
}
.nav-toggle span{
  position:absolute;
  left:11px;
  width:18px;
  height:2px;
  border-radius:2px;
  background:var(--primary);
  transition:transform .2s ease,opacity .2s ease;
}
.nav-toggle span:nth-child(1){top:13px;}
.nav-toggle span:nth-child(2){top:18px;}
.nav-toggle span:nth-child(3){top:23px;}
.nav-toggle.is-open span:nth-child(1){transform:translateY(5px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-5px) rotate(-45deg);}

.mobile-drawer{
  display:none;
  border-top:1px solid var(--line);
  background:#fff;
  padding:14px 20px 20px;
}
.mobile-drawer.is-open{display:block;}
.mobile-drawer nav{display:flex;flex-direction:column;gap:8px;}
.mobile-drawer .chip{width:100%;justify-content:flex-start;padding:11px 16px;background:var(--bg);}
.mobile-drawer .chip.is-active{background:var(--primary-light);}

@media (max-width:1023px){
  .nav-chips{display:none;}
  .nav-toggle{display:block;}
  .header-actions .btn{display:none;}
}

@media (min-width:1024px){
  .mobile-drawer{display:none !important;}
}

/* 通用板块 */
.section{padding:64px 0;}
.section-alt{background:var(--bg-alt);}

@media (min-width:1024px){
  .section{padding:88px 0;}
}

.section-head{max-width:820px;margin-bottom:34px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.section-head h2{margin-bottom:12px;}
.section-desc{font-size:15px;line-height:1.8;color:var(--text-2);margin:0;}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border-radius:999px;
  background:var(--primary-light);
  color:var(--primary);
  font-size:12.5px;
  font-weight:600;
  letter-spacing:.04em;
  margin-bottom:18px;
}

/* 顶部横幅 */
.page-banner{
  background:linear-gradient(180deg,#F6F8FA 0%,#EAF1F8 100%);
  border-bottom:1px solid var(--line);
  padding:56px 0 60px;
}
.banner-grid{align-items:center;}
.banner-grid h1{margin-bottom:16px;}
.banner-sub{
  font-size:17px;
  line-height:1.75;
  color:var(--text-2);
  margin:0 0 24px;
  max-width:560px;
}
.banner-cta{display:flex;flex-wrap:wrap;gap:12px;}

.anchor-panel{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:24px 24px 22px;
  box-shadow:var(--shadow);
}
.anchor-panel h2{font-size:15px;font-weight:600;color:var(--text-2);margin-bottom:14px;letter-spacing:.02em;}
.anchor-bar{display:flex;flex-wrap:wrap;gap:8px;}
.anchor-chip{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:8px 14px;
  border-radius:999px;
  background:var(--bg);
  border:1px solid var(--line);
  color:var(--text-2);
  font-size:13.5px;
  font-weight:500;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease;
}
.anchor-chip:hover{background:var(--primary-light);color:var(--primary);border-color:rgba(46,94,140,.35);}
.anchor-chip i{font-size:11px;color:var(--primary);}

.anchor-note{
  margin-top:18px;
  padding-top:16px;
  border-top:1px dashed var(--line);
  font-size:13.5px;
  line-height:1.75;
  color:var(--text-3);
}

@media (min-width:1024px){
  .page-banner{padding:72px 0 76px;}
}

/* 对照表格 */
.table-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow);
}
.table-scroll{overflow-x:auto;}
.compare-table{
  width:100%;
  min-width:760px;
  border-collapse:collapse;
  font-size:15px;
}
.compare-table caption{caption-side:top;text-align:left;}
.compare-table th,
.compare-table td{
  padding:16px 20px;
  text-align:left;
  vertical-align:top;
  border-bottom:1px solid var(--line);
  line-height:1.7;
}
.compare-table thead th{
  background:var(--primary-light);
  color:var(--primary);
  font-size:14.5px;
  font-weight:600;
  letter-spacing:.02em;
  border-bottom:1px solid #D5E2EE;
  white-space:nowrap;
}
.compare-table tbody th{
  font-weight:600;
  color:var(--ink);
  background:#fff;
  white-space:nowrap;
}
.compare-table tbody td{color:var(--text-2);}
.compare-table tbody tr:nth-child(even) th,
.compare-table tbody tr:nth-child(even) td{background:#FBFCFE;}
.compare-table tbody tr:last-child th,
.compare-table tbody tr:last-child td{border-bottom:0;}

.table-hint{
  display:flex;
  align-items:center;
  gap:8px;
  margin:0;
  padding:12px 20px;
  border-top:1px solid var(--line);
  background:var(--bg);
  font-size:13px;
  color:var(--text-3);
}
.table-hint i{color:var(--primary);font-size:12px;}

/* 左描边卡片矩阵 */
.lead-list{row-gap:24px;}
.lead-card{
  height:100%;
  background:#fff;
  border:1px solid var(--line);
  border-left:4px solid var(--primary);
  border-radius:4px 12px 12px 4px;
  padding:26px 26px 24px;
  transition:border-left-color .18s ease,transform .18s ease;
}
.lead-card:hover{border-left-color:var(--accent);transform:translateY(-2px);}
.lead-num{
  display:block;
  font-size:14px;
  font-weight:700;
  color:var(--primary);
  letter-spacing:.08em;
  margin-bottom:10px;
}
.lead-card h3{margin-bottom:14px;}
.lead-points{display:flex;flex-direction:column;gap:10px;margin-bottom:18px;}
.lead-points li{
  position:relative;
  padding-left:16px;
  font-size:15px;
  line-height:1.75;
  color:var(--text-2);
}
.lead-points li::before{
  content:"";
  position:absolute;
  left:0;
  top:11px;
  width:7px;
  height:7px;
  border-radius:2px;
  background:var(--primary);
  opacity:.75;
}

/* 自查清单图文 */
.check-media{
  border-radius:16px;
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--primary-light);
}
.check-media img{width:100%;aspect-ratio:4/3;object-fit:cover;}

.check-list{display:flex;flex-direction:column;gap:18px;margin-top:22px;}
.check-item{
  display:flex;
  gap:14px;
  padding:18px 20px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:12px;
}
.check-item i{
  flex:0 0 34px;
  width:34px;
  height:34px;
  border-radius:10px;
  background:var(--primary-light);
  color:var(--primary);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-size:14px;
}
.check-item h4{margin-bottom:6px;}
.check-item p{font-size:14.5px;line-height:1.8;color:var(--text-2);margin:0;}

/* FAQ */
.faq{max-width:800px;margin:0 auto;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;}
.faq-item{position:relative;border-bottom:1px solid var(--line);}
.faq-item:last-child{border-bottom:0;}
.faq-item.is-open::before{content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:0 3px 3px 0;background:var(--primary);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:18px 24px;
  background:none;
  border:0;
  cursor:pointer;
  font-size:16px;
  font-weight:600;
  color:var(--ink);
  line-height:1.6;
  text-align:left;
  transition:background-color .18s ease;
}
.faq-q:hover{background:var(--bg);}
.faq-icon{position:relative;flex:0 0 16px;width:16px;height:16px;}
.faq-icon::before,
.faq-icon::after{content:"";position:absolute;background:var(--primary);border-radius:2px;transition:transform .2s ease;}
.faq-icon::before{left:0;top:7px;width:16px;height:2px;}
.faq-icon::after{left:7px;top:0;width:2px;height:16px;}
.faq-item.is-open .faq-icon::after{transform:scaleY(0);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .28s ease;
}
.faq-item.is-open .faq-a{max-height:420px;}
.faq-a p{
  padding:0 24px 20px 24px;
  margin:0;
  font-size:15px;
  line-height:1.85;
  color:var(--text-2);
}

/* 反馈表单 */
.feedback-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:32px;
  box-shadow:var(--shadow);
}
.form-grid{row-gap:20px;}
.field label{
  display:block;
  font-size:13px;
  font-weight:600;
  color:var(--text-2);
  margin-bottom:7px;
  letter-spacing:.02em;
}
.field input,
.field select,
.field textarea{
  width:100%;
  height:44px;
  padding:0 14px;
  border:1px solid var(--line);
  border-radius:10px;
  background:#fff;
  color:var(--ink);
  font-size:15px;
  line-height:1.5;
  box-shadow:none;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.field textarea{
  height:auto;
  min-height:112px;
  padding:12px 14px;
  line-height:1.75;
  resize:vertical;
}
.field select{
  appearance:none;
  -webkit-appearance:none;
  padding-right:42px;
  background-image:linear-gradient(45deg,transparent 50%,#7B8996 50%),linear-gradient(135deg,#7B8996 50%,transparent 50%);
  background-position:calc(100% - 20px) 20px,calc(100% - 14px) 20px;
  background-size:6px 6px,6px 6px;
  background-repeat:no-repeat;
}
.field input::placeholder,
.field textarea::placeholder{color:#A3AEBA;}
.field input:focus,
.field select:focus,
.field textarea:focus{
  outline:none;
  border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(46,94,140,.18);
}
.field-hint{display:block;margin-top:6px;font-size:12.5px;color:var(--text-3);}

.form-success{
  display:none;
  align-items:center;
  gap:10px;
  margin-bottom:22px;
  padding:14px 18px;
  border-radius:10px;
  background:var(--ok-bg);
  color:var(--ok);
  font-size:14px;
  font-weight:600;
}
.form-success.is-visible{display:flex;}

.form-actions{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:16px;
  margin-top:26px;
}
.form-actions .note{font-size:13px;color:var(--text-3);}

/* CTA 横幅 */
.cta-band{
  background:var(--primary-light);
  border:1px solid #D8E4F0;
  border-radius:16px;
  padding:32px 36px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:22px;
}
.cta-band h2{font-size:22px;margin-bottom:8px;}
.cta-band p{margin:0;font-size:15px;color:var(--text-2);}

/* 页脚 */
.site-footer{
  background:var(--bg-alt);
  border-top:1px solid var(--line);
  padding:56px 0 0;
  margin-top:24px;
}
.footer-grid{row-gap:32px;}
.footer-about{max-width:420px;}
.footer-about .brand{margin-bottom:16px;}
.footer-about p{font-size:14.5px;line-height:1.8;color:var(--text-2);margin:0 0 16px;}
.footer-contact{
  display:flex;
  align-items:center;
  gap:9px;
  font-size:14px;
  color:var(--text-2);
  margin-bottom:8px;
}
.footer-contact i{color:var(--primary);font-size:14px;width:16px;text-align:center;}
.footer-title{font-size:14px;font-weight:600;color:var(--ink);margin-bottom:16px;}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a{
  font-size:14px;
  color:var(--text-2);
  display:inline-block;
  transition:color .18s ease,transform .18s ease;
}
.footer-links a:hover{color:var(--primary);transform:translateX(2px);}
.footer-bottom{
  margin-top:40px;
  border-top:1px solid var(--line);
  padding:20px 0 26px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  font-size:13px;
  color:var(--text-3);
}
.footer-bottom nav{display:flex;gap:18px;}
.footer-bottom a{color:var(--text-3);font-size:13px;}
.footer-bottom a:hover{color:var(--primary);}

/* 移动端 */
@media (max-width:768px){
  h1{font-size:26px;}
  h2{font-size:22px;}
  h3{font-size:18px;}
  body{font-size:15.5px;}
  .section{padding:52px 0;}
  .page-banner{padding:40px 0 46px;}
  .banner-sub{font-size:16px;}
  .banner-cta .btn{flex:1 1 auto;}
  .anchor-panel{padding:20px 18px;}
  .feedback-card{padding:22px 18px;}
  .cta-band{padding:24px 20px;}
  .cta-band .btn{width:100%;}
  .faq-q{padding:16px 18px;font-size:15.5px;}
  .faq-a p{padding:0 18px 18px 18px;}
  .compare-table th,
  .compare-table td{padding:14px 16px;}
  .lead-card{padding:22px 20px;}
  .check-item{padding:16px 16px;}
}

@media (max-width:520px){
  .container{padding:0 16px;}
  .brand-text{font-size:16px;}
  .header-inner{gap:12px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .form-actions .btn{width:100%;}
}