/* roulang page: index */
:root{
  --j9-primary:#2A6F8E;
  --j9-primary-dark:#1E5873;
  --j9-primary-soft:#EAF3F7;
  --j9-accent:#D9823B;
  --j9-accent-soft:#FBF0E6;
  --j9-bg:#F6F9FB;
  --j9-surface:#FFFFFF;
  --j9-ink:#13212B;
  --j9-muted:#5C6F7A;
  --j9-line:#DDE8EE;
  --j9-success:#2F8F6B;
  --j9-warn:#C2553D;
  --j9-r-card:12px;
  --j9-r-btn:8px;
  --j9-r-pill:999px;
  --j9-shadow:0 10px 30px rgba(19,33,43,.08);
  --j9-shadow-hover:0 16px 36px rgba(19,33,43,.12);
  --j9-sidebar:232px;
  --j9-gap:24px;
  --j9-section:80px;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--j9-bg);
  color:var(--j9-ink);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  letter-spacing:.2px;
}
img{max-width:100%;display:block;}
a{color:var(--j9-primary);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--j9-primary-dark);}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding-left:1.1em;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--j9-accent);outline-offset:2px;border-radius:4px;}

/* ---------- App Shell ---------- */
.j9-shell{min-height:100vh;}
.j9-sidebar{
  position:fixed;top:0;left:0;width:var(--j9-sidebar);height:100vh;
  background:var(--j9-surface);border-right:1px solid var(--j9-line);
  display:flex;flex-direction:column;z-index:60;
}
.j9-logo{
  height:72px;display:flex;align-items:center;gap:10px;
  padding:0 18px;border-bottom:1px solid var(--j9-line);
}
.j9-logo-mark{
  width:36px;height:36px;border-radius:10px;flex:0 0 36px;
  background:var(--j9-primary);color:#fff;font-weight:700;font-size:15px;
  display:flex;align-items:center;justify-content:center;letter-spacing:0;
}
.j9-logo-text{font-size:13px;font-weight:700;line-height:1.3;color:var(--j9-ink);}
.j9-logo-text span{display:block;font-weight:500;color:var(--j9-muted);font-size:12px;}
.j9-nav{padding:14px 12px;flex:1 1 auto;overflow-y:auto;}
.j9-nav a{
  display:flex;align-items:center;gap:10px;height:44px;padding:0 16px;
  border-radius:var(--j9-r-btn);color:var(--j9-muted);font-size:14px;
  position:relative;transition:background .2s ease,color .2s ease;
}
.j9-nav a:hover{background:var(--j9-primary-soft);color:var(--j9-primary-dark);}
.j9-nav a.is-active{background:var(--j9-primary-soft);color:var(--j9-primary);font-weight:600;}
.j9-nav a.is-active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;
  border-radius:2px;background:var(--j9-primary);
}
.j9-nav .j9-dot{
  width:6px;height:6px;border-radius:50%;background:currentColor;opacity:.5;flex:0 0 6px;
}
.j9-side-foot{padding:16px;border-top:1px solid var(--j9-line);}
.j9-side-foot .j9-side-cta{
  display:block;text-align:center;background:var(--j9-primary);color:#fff;
  height:44px;line-height:44px;border-radius:var(--j9-r-btn);font-size:14px;
  transition:background .2s ease,transform .2s ease;
}
.j9-side-foot .j9-side-cta:hover{background:var(--j9-primary-dark);transform:translateY(-1px);}
.j9-side-foot p{margin-top:12px;font-size:12px;color:var(--j9-muted);line-height:1.6;}

.j9-main{margin-left:var(--j9-sidebar);}

/* ---------- 移动顶栏 ---------- */
.j9-topbar{
  display:none;position:sticky;top:0;z-index:70;height:56px;
  background:var(--j9-surface);border-bottom:1px solid var(--j9-line);
  align-items:center;gap:10px;padding:0 12px;
}
.j9-burger{
  width:40px;height:40px;border:1px solid var(--j9-line);background:#fff;
  border-radius:var(--j9-r-btn);display:flex;align-items:center;justify-content:center;
  cursor:pointer;flex:0 0 40px;
}
.j9-burger i{display:block;width:16px;height:2px;background:var(--j9-ink);position:relative;}
.j9-burger i::before,.j9-burger i::after{
  content:"";position:absolute;left:0;width:16px;height:2px;background:var(--j9-ink);
}
.j9-burger i::before{top:-5px;}
.j9-burger i::after{top:5px;}
.j9-topbar .j9-top-title{font-size:13px;font-weight:700;line-height:1.25;color:var(--j9-ink);}
.j9-topbar .j9-top-title span{display:block;font-size:12px;font-weight:400;color:var(--j9-muted);}
.j9-topbar .j9-top-mail{
  margin-left:auto;font-size:13px;color:var(--j9-primary);border:1px solid var(--j9-line);
  border-radius:var(--j9-r-pill);padding:6px 12px;background:#fff;
}
.j9-mask{
  display:none;position:fixed;inset:0;background:rgba(19,33,43,.35);z-index:80;
}
.j9-mask.is-open{display:block;}
.j9-drawer{
  position:fixed;top:0;left:0;width:280px;height:100vh;background:#fff;z-index:90;
  transform:translateX(-100%);transition:transform .25s ease;display:flex;flex-direction:column;
}
.j9-drawer.is-open{transform:translateX(0);}

/* ---------- 容器与区块 ---------- */
.j9-container{max-width:1180px;margin:0 auto;padding:0 32px;}
.j9-section{padding:var(--j9-section) 0;}
.j9-section.is-tight{padding:56px 0;}
.j9-section.is-alt{background:var(--j9-surface);border-top:1px solid var(--j9-line);border-bottom:1px solid var(--j9-line);}
.j9-head{margin-bottom:32px;max-width:760px;}
.j9-eyebrow{
  display:inline-block;font-size:12px;letter-spacing:.4px;color:var(--j9-primary);
  background:var(--j9-primary-soft);border-radius:var(--j9-r-pill);padding:4px 12px;margin-bottom:14px;
}
.j9-h1{font-size:44px;font-weight:700;line-height:1.25;}
.j9-h2{font-size:30px;font-weight:700;line-height:1.35;}
.j9-h3{font-size:21px;font-weight:600;line-height:1.45;}
.j9-lead{font-size:17px;color:var(--j9-muted);margin-top:16px;line-height:1.75;}
.j9-small{font-size:13px;color:var(--j9-muted);}

/* ---------- 按钮 ---------- */
.j9-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--j9-r-btn);font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;transition:all .2s ease;white-space:nowrap;
}
.j9-btn-primary{background:var(--j9-primary);color:#fff;}
.j9-btn-primary:hover{background:var(--j9-primary-dark);color:#fff;transform:translateY(-1px);}
.j9-btn-primary:active{transform:translateY(0);}
.j9-btn-ghost{background:#fff;color:var(--j9-primary);border-color:var(--j9-primary);}
.j9-btn-ghost:hover{background:var(--j9-primary-soft);color:var(--j9-primary-dark);}
.j9-btn-text{
  display:inline-flex;align-items:center;gap:6px;color:var(--j9-primary);font-size:14px;font-weight:600;
  border-bottom:1px solid transparent;padding-bottom:2px;
}
.j9-btn-text:hover{border-bottom-color:var(--j9-primary);}
.j9-btns{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}

/* ---------- 徽章 ---------- */
.j9-badge{
  display:inline-block;font-size:12px;border-radius:var(--j9-r-pill);
  padding:3px 11px;background:var(--j9-primary-soft);color:var(--j9-primary-dark);line-height:1.6;
}
.j9-badge.is-accent{background:var(--j9-accent-soft);color:#9A5A22;}

/* ---------- Hero ---------- */
.j9-hero{
  position:relative;background-image:linear-gradient(100deg,rgba(246,249,251,.97) 0%,rgba(246,249,251,.88) 46%,rgba(234,243,247,.72) 100%),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--j9-line);
}
.j9-hero-inner{padding:76px 0 72px;display:grid;grid-template-columns:minmax(0,1.08fr) minmax(0,.92fr);gap:48px;align-items:center;}
.j9-hero-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px;}
.j9-hero p.j9-lead{max-width:560px;}
.j9-hero-media{position:relative;}
.j9-hero-media img{
  width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:14px;
  border:1px solid var(--j9-line);box-shadow:var(--j9-shadow);
}
.j9-hero-chip{
  position:absolute;left:-14px;bottom:-14px;background:#fff;border:1px solid var(--j9-line);
  border-radius:var(--j9-r-card);box-shadow:var(--j9-shadow);padding:14px 18px;
}
.j9-hero-chip strong{display:block;font-size:20px;color:var(--j9-primary);line-height:1.3;}
.j9-hero-chip span{font-size:12px;color:var(--j9-muted);}

/* ---------- 入口卡（不对称） ---------- */
.j9-entries{display:grid;grid-template-columns:minmax(0,1.06fr) minmax(0,.94fr);gap:var(--j9-gap);}
.j9-card{
  background:var(--j9-surface);border:1px solid var(--j9-line);border-radius:var(--j9-r-card);
  box-shadow:var(--j9-shadow);padding:26px;transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.j9-card:hover{transform:translateY(-2px);box-shadow:var(--j9-shadow-hover);border-color:#BFD9E4;}
.j9-card-main{display:flex;flex-direction:column;justify-content:space-between;min-height:300px;}
.j9-icon{
  width:44px;height:44px;border-radius:12px;background:var(--j9-primary-soft);color:var(--j9-primary);
  display:flex;align-items:center;justify-content:center;font-size:17px;font-weight:700;
}
.j9-icon.is-accent{background:var(--j9-accent-soft);color:#B96A2A;}
.j9-card h3{margin-top:18px;}
.j9-card p{margin-top:10px;color:var(--j9-muted);font-size:15px;}
.j9-card .j9-btn-text{margin-top:18px;}
.j9-entries-side{display:grid;gap:var(--j9-gap);}
.j9-strip{display:flex;gap:18px;align-items:flex-start;}
.j9-strip .j9-icon{flex:0 0 44px;}
.j9-strip h3{margin-top:0;}
.j9-strip p{margin-top:6px;}

/* ---------- 数据条 ---------- */
.j9-stats{
  display:grid;grid-template-columns:repeat(4,1fr);
  background:var(--j9-surface);border:1px solid var(--j9-line);border-radius:var(--j9-r-card);
  box-shadow:var(--j9-shadow);overflow:hidden;
}
.j9-stat{padding:28px 26px;border-right:1px solid var(--j9-line);}
.j9-stat:last-child{border-right:0;}
.j9-stat strong{display:block;font-size:36px;line-height:1.15;color:var(--j9-primary);font-weight:700;}
.j9-stat span{display:block;margin-top:8px;font-size:14px;color:var(--j9-muted);}

/* ---------- 最新信息 ---------- */
.j9-post-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--j9-gap);}
.j9-post-grid .j9-post-card:first-child{grid-column:span 2;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);align-items:stretch;}
.j9-post-grid .j9-post-card:first-child .j9-post-body{padding:26px;}
.j9-post-card{
  background:var(--j9-surface);border:1px solid var(--j9-line);border-radius:var(--j9-r-card);
  box-shadow:var(--j9-shadow);overflow:hidden;display:flex;flex-direction:column;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.j9-post-card:hover{transform:translateY(-2px);box-shadow:var(--j9-shadow-hover);border-color:#BFD9E4;}
.j9-post-thumb{display:block;overflow:hidden;background:var(--j9-primary-soft);}
.j9-post-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .3s ease;}
.j9-post-card:first-child .j9-post-thumb img{height:100%;aspect-ratio:auto;min-height:236px;}
.j9-post-card:hover .j9-post-thumb img{transform:scale(1.03);}
.j9-post-body{padding:20px;display:flex;flex-direction:column;flex:1 1 auto;}
.j9-post-body h3{margin-top:12px;font-size:19px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.j9-post-body h3 a{color:var(--j9-ink);}
.j9-post-body h3 a:hover{color:var(--j9-primary);}
.j9-post-body p{margin-top:10px;color:var(--j9-muted);font-size:14px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.j9-post-foot{margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;gap:12px;}
.j9-empty{
  background:var(--j9-surface);border:1px dashed #C6D9E3;border-radius:var(--j9-r-card);
  padding:52px 24px;text-align:center;
}
.j9-empty .j9-empty-ico{
  width:52px;height:52px;border-radius:50%;background:var(--j9-primary-soft);color:var(--j9-primary);
  display:flex;align-items:center;justify-content:center;margin:0 auto 16px;font-size:22px;font-weight:700;
}
.j9-empty p{color:var(--j9-muted);}
.j9-empty .j9-btns{justify-content:center;}

/* ---------- 案例 ---------- */
.j9-case-wrap{display:grid;grid-template-columns:minmax(0,1.12fr) minmax(0,.88fr);gap:var(--j9-gap);align-items:stretch;}
.j9-case-main{position:relative;border-radius:var(--j9-r-card);overflow:hidden;border:1px solid var(--j9-line);box-shadow:var(--j9-shadow);}
.j9-case-main img{width:100%;height:100%;min-height:360px;object-fit:cover;}
.j9-case-overlay{
  position:absolute;left:0;right:0;bottom:0;padding:28px;
  background:linear-gradient(180deg,rgba(19,33,43,0) 0%,rgba(19,33,43,.82) 100%);
}
.j9-case-overlay h3{color:#fff;font-size:22px;}
.j9-case-overlay p{color:rgba(255,255,255,.86);font-size:14px;margin-top:8px;}
.j9-case-list{display:grid;gap:var(--j9-gap);}
.j9-case-item{display:flex;gap:16px;align-items:flex-start;}
.j9-case-item img{width:112px;height:88px;object-fit:cover;border-radius:10px;flex:0 0 112px;}
.j9-num{font-size:14px;font-weight:700;color:var(--j9-accent);letter-spacing:.5px;}

/* ---------- 方案（交替图文） ---------- */
.j9-plan{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:40px;align-items:center;padding:34px 0;border-bottom:1px solid var(--j9-line);}
.j9-plan:last-child{border-bottom:0;}
.j9-plan.is-reverse .j9-plan-media{order:2;}
.j9-plan-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--j9-r-card);border:1px solid var(--j9-line);}
.j9-plan-index{font-size:40px;font-weight:700;color:#F1D9C4;line-height:1;}
.j9-plan-text h3{margin-top:6px;}
.j9-plan-text p{margin-top:12px;color:var(--j9-muted);}
.j9-plan-text ul{margin-top:14px;color:var(--j9-muted);font-size:15px;}
.j9-plan-text li{margin-bottom:6px;}

/* ---------- FAQ ---------- */
.j9-faq{border:1px solid var(--j9-line);border-radius:var(--j9-r-card);background:var(--j9-surface);box-shadow:var(--j9-shadow);overflow:hidden;}
.j9-faq-item{border-bottom:1px solid var(--j9-line);}
.j9-faq-item:last-child{border-bottom:0;}
.j9-faq-q{
  width:100%;background:transparent;border:0;text-align:left;cursor:pointer;
  display:flex;align-items:center;gap:14px;padding:20px 24px;font-size:17px;font-weight:600;color:var(--j9-ink);
  transition:background .2s ease,color .2s ease;
}
.j9-faq-q:hover{background:var(--j9-primary-soft);}
.j9-faq-q .j9-plus{
  width:24px;height:24px;flex:0 0 24px;border-radius:50%;background:var(--j9-primary-soft);color:var(--j9-primary);
  display:flex;align-items:center;justify-content:center;font-size:15px;font-weight:700;transition:transform .25s ease,background .25s ease;
}
.j9-faq-item.is-open .j9-faq-q{background:var(--j9-primary-soft);color:var(--j9-primary-dark);}
.j9-faq-item.is-open .j9-plus{transform:rotate(45deg);background:var(--j9-primary);color:#fff;}
.j9-faq-a{display:none;padding:0 24px 22px 62px;color:var(--j9-muted);font-size:15px;}
.j9-faq-item.is-open .j9-faq-a{display:block;}

/* ---------- 联系 ---------- */
.j9-contact{display:grid;grid-template-columns:minmax(0,.92fr) minmax(0,1.08fr);gap:var(--j9-gap);}
.j9-contact-info{background:var(--j9-surface);border:1px solid var(--j9-line);border-radius:var(--j9-r-card);box-shadow:var(--j9-shadow);padding:30px;}
.j9-contact-info dl{margin:0;margin-top:22px;}
.j9-contact-info dt{font-size:13px;color:var(--j9-muted);margin-top:16px;}
.j9-contact-info dd{margin:4px 0 0;font-size:15px;font-weight:600;color:var(--j9-ink);}
.j9-form{background:var(--j9-surface);border:1px solid var(--j9-line);border-radius:var(--j9-r-card);box-shadow:var(--j9-shadow);padding:30px;}
.j9-field{margin-bottom:18px;}
.j9-field label{display:block;font-size:13px;color:var(--j9-muted);margin-bottom:8px;}
.j9-field input,.j9-field textarea{
  width:100%;border:1px solid var(--j9-line);border-radius:var(--j9-r-btn);
  padding:0 14px;height:44px;font-size:15px;color:var(--j9-ink);background:#FCFDFE;
  transition:border-color .2s ease,box-shadow .2s ease;font-family:inherit;
}
.j9-field textarea{height:auto;min-height:112px;padding:12px 14px;line-height:1.7;resize:vertical;}
.j9-field input:focus,.j9-field textarea:focus{outline:none;border-color:var(--j9-primary);box-shadow:0 0 0 3px rgba(42,111,142,.14);}
.j9-form .j9-btn{width:100%;}
.j9-form-note{margin-top:14px;font-size:13px;color:var(--j9-muted);}

/* ---------- 页脚 ---------- */
.j9-footer{background:#F1F6F8;border-top:1px solid var(--j9-line);padding:56px 0 26px;}
.j9-footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:32px;}
.j9-footer h4{font-size:14px;color:var(--j9-ink);margin-bottom:16px;font-weight:700;}
.j9-footer ul{list-style:none;padding:0;margin:0;}
.j9-footer li{margin-bottom:10px;}
.j9-footer a{font-size:14px;color:var(--j9-muted);}
.j9-footer a:hover{color:var(--j9-primary);text-decoration:underline;}
.j9-footer-brand{display:flex;gap:10px;align-items:flex-start;}
.j9-footer-brand .j9-logo-mark{width:34px;height:34px;flex:0 0 34px;font-size:14px;}
.j9-footer-brand strong{font-size:14px;line-height:1.4;display:block;}
.j9-footer-brand p{margin-top:10px;font-size:13px;color:var(--j9-muted);}
.j9-footer-bottom{
  margin-top:36px;padding-top:20px;border-top:1px solid var(--j9-line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:var(--j9-muted);
}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .j9-sidebar{display:none;}
  .j9-main{margin-left:0;}
  .j9-topbar{display:flex;}
  .j9-container{padding:0 20px;}
  .j9-section{padding:56px 0;}
  .j9-hero-inner{grid-template-columns:1fr;gap:32px;padding:52px 0;}
  .j9-h1{font-size:34px;}
  .j9-h2{font-size:25px;}
  .j9-entries,.j9-case-wrap,.j9-contact,.j9-plan{grid-template-columns:1fr;}
  .j9-plan.is-reverse .j9-plan-media{order:0;}
  .j9-stats{grid-template-columns:repeat(2,1fr);}
  .j9-stat:nth-child(2){border-right:0;}
  .j9-stat:nth-child(1),.j9-stat:nth-child(2){border-bottom:1px solid var(--j9-line);}
  .j9-post-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .j9-post-grid .j9-post-card:first-child{grid-column:span 2;grid-template-columns:1fr;}
  .j9-footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:639px){
  body{font-size:16px;}
  .j9-container{padding:0 16px;}
  .j9-section{padding:48px 0;}
  .j9-h1{font-size:30px;}
  .j9-h2{font-size:23px;}
  .j9-h3{font-size:18px;}
  .j9-stats{grid-template-columns:1fr;}
  .j9-stat{border-right:0;border-bottom:1px solid var(--j9-line);}
  .j9-stat:last-child{border-bottom:0;}
  .j9-post-grid{grid-template-columns:1fr;}
  .j9-post-grid .j9-post-card:first-child{grid-column:span 1;}
  .j9-hero-chip{left:10px;bottom:-18px;}
  .j9-btns .j9-btn{width:100%;}
  .j9-footer-grid{grid-template-columns:1fr;}
  .j9-faq-a{padding:0 18px 20px 18px;}
  .j9-faq-q{padding:18px;font-size:16px;}
  .j9-card{padding:22px;}
}

/* roulang page: article */
:root{
  --j9-primary:#2A6F8E;
  --j9-primary-dark:#1E5873;
  --j9-primary-soft:#EAF3F7;
  --j9-accent:#D9823B;
  --j9-accent-soft:#FBF0E6;
  --j9-bg:#F6F9FB;
  --j9-surface:#FFFFFF;
  --j9-ink:#13212B;
  --j9-muted:#5C6F7A;
  --j9-line:#DDE8EE;
  --j9-success:#2F8F6B;
  --j9-warn:#C2553D;
  --j9-radius-card:12px;
  --j9-radius-btn:8px;
  --j9-shadow:0 10px 30px rgba(19,33,43,.08);
  --j9-shadow-hover:0 16px 36px rgba(19,33,43,.12);
  --j9-sidebar-w:232px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--j9-ink);
  background:var(--j9-bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--j9-primary);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--j9-primary-dark);}
button{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4{margin:0;color:var(--j9-ink);font-weight:700;letter-spacing:.2px;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
figure{margin:0;}
:focus-visible{outline:2px solid var(--j9-accent);outline-offset:2px;}

/* ---------- 布局容器 ---------- */
.j9-wrap{width:100%;max-width:1180px;margin:0 auto;padding:0 32px;}

/* ---------- 左侧导航 ---------- */
.j9-sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--j9-sidebar-w);
  background:var(--j9-surface);
  border-right:1px solid var(--j9-line);
  z-index:70;
}
.j9-sidebar-inner{
  display:flex;flex-direction:column;height:100%;
  padding:0 16px 18px;overflow-y:auto;
}
.j9-logo{
  display:flex;align-items:center;gap:10px;
  height:72px;padding:0 4px;flex:0 0 auto;color:var(--j9-ink);
}
.j9-logo:hover{color:var(--j9-ink);}
.j9-logo-mark{
  width:32px;height:32px;flex:0 0 auto;border-radius:9px;
  background:linear-gradient(140deg,#2A6F8E,#3E8AA8);
  color:#fff;font-size:15px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
}
.j9-logo-text{font-size:13px;line-height:1.3;font-weight:700;color:var(--j9-ink);}
.j9-logo-text em{display:block;font-style:normal;font-weight:500;font-size:12px;color:var(--j9-muted);}
.j9-nav{display:flex;flex-direction:column;gap:4px;margin-top:6px;}
.j9-nav a{
  position:relative;display:flex;align-items:center;gap:10px;
  min-height:44px;padding:8px 12px 8px 16px;border-radius:8px;
  color:var(--j9-muted);font-size:14px;line-height:1.4;
  transition:background .18s ease,color .18s ease;
}
.j9-nav a:hover{background:var(--j9-primary-soft);color:var(--j9-primary-dark);}
.j9-nav a.is-active{background:var(--j9-primary-soft);color:var(--j9-primary);font-weight:600;}
.j9-nav a.is-active::before{
  content:"";position:absolute;left:0;top:8px;bottom:8px;width:3px;
  border-radius:3px;background:var(--j9-primary);
}
.j9-dot{width:6px;height:6px;border-radius:50%;background:currentColor;opacity:.4;flex:0 0 auto;}
.j9-nav a.is-active .j9-dot{opacity:1;}
.j9-sidebar-foot{
  margin-top:auto;padding-top:18px;border-top:1px solid var(--j9-line);
  display:flex;flex-direction:column;gap:10px;
}
.j9-sidebar-foot p{font-size:12px;line-height:1.6;color:var(--j9-muted);}

/* ---------- 按钮 ---------- */
.j9-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--j9-radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  white-space:nowrap;transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.j9-btn-primary{background:var(--j9-primary);color:#fff;}
.j9-btn-primary:hover{background:var(--j9-primary-dark);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(42,111,142,.25);}
.j9-btn-primary:active{transform:translateY(0);}
.j9-btn-ghost{background:#fff;color:var(--j9-primary);border-color:#B9D3DF;}
.j9-btn-ghost:hover{background:var(--j9-primary-soft);color:var(--j9-primary-dark);border-color:var(--j9-primary);}
.j9-btn-block{width:100%;}

/* ---------- 移动端顶栏与遮罩 ---------- */
.j9-mobile-top{
  display:none;position:sticky;top:0;z-index:80;height:56px;
  align-items:center;gap:10px;padding:0 12px;
  background:#fff;border-bottom:1px solid var(--j9-line);
}
.j9-burger{
  width:40px;height:40px;flex:0 0 auto;border-radius:8px;
  border:1px solid var(--j9-line);background:#fff;cursor:pointer;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;
  transition:background .18s ease;
}
.j9-burger:hover{background:var(--j9-primary-soft);}
.j9-burger span{display:block;width:16px;height:2px;border-radius:2px;background:var(--j9-ink);}
.j9-mobile-logo{flex:1;text-align:center;font-size:13px;font-weight:700;line-height:1.25;color:var(--j9-ink);}
.j9-mobile-cta{
  font-size:13px;color:var(--j9-primary);border:1px solid #B9D3DF;
  border-radius:999px;padding:6px 12px;white-space:nowrap;
}
.j9-mobile-cta:hover{background:var(--j9-primary-soft);}
.j9-overlay{
  position:fixed;inset:0;background:rgba(19,33,43,.35);
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;z-index:65;
}
.j9-overlay.is-open{opacity:1;visibility:visible;}

/* ---------- 主内容 ---------- */
.j9-main{
  margin-left:var(--j9-sidebar-w);min-height:100vh;
  display:flex;flex-direction:column;background:var(--j9-bg);
}

/* ---------- 面包屑 ---------- */
.j9-crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  padding:28px 0 0;font-size:13px;color:var(--j9-muted);line-height:1.6;
}
.j9-crumb a{color:var(--j9-muted);}
.j9-crumb a:hover{color:var(--j9-primary);text-decoration:underline;}
.j9-crumb-cur{color:var(--j9-ink);font-weight:500;}

/* ---------- 文章卡 ---------- */
.j9-post{
  margin:20px 0 0;padding:36px 40px 44px;
  background:#fff;border:1px solid var(--j9-line);
  border-radius:var(--j9-radius-card);box-shadow:var(--j9-shadow);
}
.j9-badge{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;
  border-radius:999px;background:var(--j9-primary-soft);color:var(--j9-primary-dark);
  font-size:12px;font-weight:600;letter-spacing:.2px;
}
.j9-post-title{
  font-size:38px;line-height:1.3;margin:16px 0 18px;
  letter-spacing:.2px;word-break:break-word;
}
.j9-post-meta{
  display:flex;flex-wrap:wrap;gap:8px 20px;
  padding-bottom:22px;border-bottom:1px solid var(--j9-line);
  font-size:13px;color:var(--j9-muted);
}
.j9-post-cover{margin:26px 0 0;border-radius:12px;overflow:hidden;}
.j9-post-cover img{
  width:100%;height:340px;object-fit:cover;border-radius:12px;
  transition:transform .5s ease;
}
.j9-post-cover:hover img{transform:scale(1.03);}

/* ---------- 文章正文 ---------- */
.j9-article-body{max-width:820px;margin:30px auto 0;}
.j9-article-body p{font-size:17px;line-height:1.85;color:#24333D;margin:0 0 18px;}
.j9-article-body h2{font-size:26px;line-height:1.4;margin:42px 0 18px;}
.j9-article-body h3{font-size:20px;line-height:1.5;margin:32px 0 14px;font-weight:600;}
.j9-article-body h4{font-size:17px;margin:24px 0 12px;font-weight:600;}
.j9-article-body ul,.j9-article-body ol{margin:0 0 20px;padding-left:24px;font-size:17px;line-height:1.85;color:#24333D;}
.j9-article-body ul{list-style:disc;}
.j9-article-body ol{list-style:decimal;}
.j9-article-body li{margin-bottom:8px;}
.j9-article-body img{width:100%;height:auto;border-radius:10px;margin:14px 0 10px;}
.j9-article-body figure{margin:22px 0;}
.j9-article-body figcaption,.j9-article-body .caption{font-size:13px;color:var(--j9-muted);text-align:center;margin-top:8px;}
.j9-article-body blockquote{
  margin:24px 0;padding:18px 22px;border-left:4px solid var(--j9-primary);
  background:var(--j9-primary-soft);border-radius:0 10px 10px 0;color:#26414F;
}
.j9-article-body blockquote p{margin:0;font-size:16.5px;}
.j9-article-body a{color:var(--j9-primary);text-decoration:underline;text-underline-offset:3px;}
.j9-article-body a:hover{color:var(--j9-primary-dark);}
.j9-article-body code{
  background:#EEF3F6;border-radius:6px;padding:2px 6px;
  font-size:14.5px;font-family:Consolas,Monaco,monospace;color:#1E5873;
}
.j9-article-body pre{
  background:#EEF3F6;border-radius:8px;padding:16px 18px;
  overflow-x:auto;margin:0 0 22px;border:1px solid var(--j9-line);
}
.j9-article-body pre code{background:none;padding:0;}
.j9-article-body table{
  width:100%;border-collapse:collapse;margin:0 0 22px;font-size:15px;
}
.j9-article-body th,.j9-article-body td{
  border:1px solid var(--j9-line);padding:10px 12px;text-align:left;
}
.j9-article-body th{background:var(--j9-primary-soft);color:var(--j9-primary-dark);font-weight:600;}
.j9-article-body hr{border:0;border-top:1px solid var(--j9-line);margin:32px 0;}

/* ---------- 空态 ---------- */
.j9-empty{text-align:center;padding:48px 8px 40px;}
.j9-empty-icon{
  width:56px;height:56px;margin:0 auto 18px;border-radius:50%;
  background:var(--j9-accent-soft);color:var(--j9-accent);
  font-size:24px;font-weight:700;display:flex;align-items:center;justify-content:center;
}
.j9-empty h2{font-size:22px;margin-bottom:10px;}
.j9-empty p{font-size:15px;color:var(--j9-muted);margin-bottom:22px;line-height:1.8;}

/* ---------- 继续阅读 ---------- */
.j9-related{
  margin:32px 0 0;padding:36px 40px;
  background:#fff;border:1px solid var(--j9-line);
  border-radius:var(--j9-radius-card);box-shadow:var(--j9-shadow);
}
.j9-related h2{font-size:26px;margin-bottom:10px;}
.j9-related-lead{font-size:15px;color:var(--j9-muted);line-height:1.8;margin-bottom:24px;max-width:760px;}
.j9-related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.j9-rel-card{
  display:flex;flex-direction:column;overflow:hidden;color:inherit;
  background:#fff;border:1px solid var(--j9-line);border-radius:12px;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.j9-rel-card:hover{transform:translateY(-2px);box-shadow:var(--j9-shadow-hover);border-color:#BFD9E4;color:inherit;}
.j9-rel-card img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.j9-rel-body{padding:16px 18px 20px;display:flex;flex-direction:column;gap:10px;}
.j9-rel-body h3{font-size:17px;line-height:1.5;}
.j9-rel-body p{font-size:14px;line-height:1.7;color:var(--j9-muted);}
.j9-rel-more{font-size:13px;font-weight:600;color:var(--j9-primary);}
.j9-back-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}

/* ---------- 页脚 ---------- */
.j9-footer{
  margin-top:64px;padding:56px 0 24px;
  background:#fff;border-top:1px solid var(--j9-line);
}
.j9-footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:32px;}
.j9-footer-brand{display:flex;gap:12px;align-items:flex-start;}
.j9-footer-brand strong{display:block;font-size:15px;margin-bottom:8px;color:var(--j9-ink);}
.j9-footer-brand p{font-size:13px;line-height:1.75;color:var(--j9-muted);max-width:300px;}
.j9-footer h4{font-size:14px;margin-bottom:14px;}
.j9-footer ul li{font-size:13px;line-height:1.7;color:var(--j9-muted);margin-bottom:10px;}
.j9-footer ul li a{color:var(--j9-muted);}
.j9-footer ul li a:hover{color:var(--j9-primary);text-decoration:underline;}
.j9-footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  margin-top:40px;padding-top:20px;border-top:1px solid var(--j9-line);
  font-size:13px;color:var(--j9-muted);
}

/* ---------- 中屏 ---------- */
@media screen and (max-width:1023px){
  :root{--j9-sidebar-w:200px;}
  .j9-wrap{padding:0 24px;}
  .j9-post{padding:28px 26px 34px;}
  .j9-related{padding:28px 26px;}
  .j9-post-title{font-size:32px;}
  .j9-post-cover img{height:280px;}
  .j9-related-grid{grid-template-columns:1fr 1fr;}
  .j9-footer-grid{grid-template-columns:1fr 1fr;}
}

/* ---------- 小屏抽屉 ---------- */
@media screen and (max-width:860px){
  .j9-mobile-top{display:flex;}
  .j9-sidebar{
    width:280px;transform:translateX(-100%);
    transition:transform .28s ease;box-shadow:0 0 40px rgba(19,33,43,.18);
  }
  .j9-sidebar.is-open{transform:translateX(0);}
  .j9-main{margin-left:0;}
  .j9-wrap{padding:0 16px;}
  .j9-crumb{padding-top:20px;}
  .j9-post{margin-top:16px;padding:24px 18px 28px;}
  .j9-post-title{font-size:28px;line-height:1.35;}
  .j9-post-cover img{height:210px;}
  .j9-article-body{margin-top:24px;}
  .j9-article-body p,
  .j9-article-body ul,
  .j9-article-body ol{font-size:16.5px;line-height:1.85;}
  .j9-article-body h2{font-size:22px;margin:34px 0 14px;}
  .j9-article-body h3{font-size:18px;}
  .j9-related{padding:24px 18px;margin-top:24px;}
  .j9-related h2{font-size:22px;}
  .j9-related-grid{grid-template-columns:1fr;}
  .j9-back-actions .j9-btn{flex:1 1 auto;}
  .j9-footer{margin-top:44px;padding:40px 0 20px;}
  .j9-footer-grid{grid-template-columns:1fr;gap:26px;}
  .j9-footer-bottom{flex-direction:column;gap:6px;font-size:12.5px;}
}

@media screen and (max-width:520px){
  .j9-post-title{font-size:26px;}
  .j9-post-meta{font-size:12.5px;}
  .j9-post-cover img{height:180px;}
  .j9-btn{width:100%;padding:0 18px;}
  .j9-mobile-top .j9-btn{width:auto;}
  .j9-back-actions{flex-direction:column;}
}

/* roulang page: category1 */
:root{
  --j9-primary:#2A6F8E;
  --j9-primary-dark:#1E5873;
  --j9-primary-soft:#EAF3F7;
  --j9-accent:#D9823B;
  --j9-accent-soft:#FBF0E6;
  --j9-bg:#F6F9FB;
  --j9-surface:#FFFFFF;
  --j9-ink:#13212B;
  --j9-muted:#5C6F7A;
  --j9-line:#DDE8EE;
  --j9-success:#2F8F6B;
  --j9-warn:#C2553D;
  --j9-radius-card:12px;
  --j9-radius-btn:8px;
  --j9-shadow:0 10px 30px rgba(19,33,43,.08);
  --j9-shadow-hover:0 16px 36px rgba(19,33,43,.12);
  --j9-side:232px;
  --j9-gap:24px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  background:var(--j9-bg);
  color:var(--j9-ink);
  font-size:16.5px;
  line-height:1.75;
  letter-spacing:0.2px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--j9-primary);text-decoration:none;transition:color .2s ease,background-color .2s ease;}
a:hover{color:var(--j9-primary-dark);}
h1,h2,h3,h4{margin:0;letter-spacing:0.2px;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--j9-accent);outline-offset:2px;}

/* ============ 侧栏 App Shell ============ */
.j9-sidebar{
  position:fixed;top:0;left:0;width:var(--j9-side);height:100vh;
  background:var(--j9-surface);border-right:1px solid var(--j9-line);
  display:flex;flex-direction:column;padding:14px 14px 18px;z-index:60;overflow-y:auto;
}
.j9-brand{display:flex;align-items:center;gap:10px;min-height:72px;padding:6px 6px 12px;border-bottom:1px solid var(--j9-line);}
.j9-logo-mark{
  flex:none;width:38px;height:38px;border-radius:10px;
  background:linear-gradient(140deg,var(--j9-primary),var(--j9-primary-dark));
  color:#fff;font-weight:700;font-size:18px;display:flex;align-items:center;justify-content:center;
}
.j9-brand-text strong{display:block;font-size:13.5px;line-height:1.35;color:var(--j9-ink);font-weight:700;}
.j9-brand-text span{display:block;font-size:11.5px;color:var(--j9-muted);letter-spacing:.6px;margin-top:2px;}
.j9-nav{display:flex;flex-direction:column;gap:6px;margin-top:14px;}
.j9-nav a{
  position:relative;display:flex;align-items:center;gap:10px;height:44px;padding:0 12px 0 16px;
  border-radius:8px;color:var(--j9-muted);font-size:14px;overflow:hidden;white-space:nowrap;text-overflow:ellipsis;
}
.j9-nav a:hover{background:var(--j9-primary-soft);color:var(--j9-primary);}
.j9-nav a.is-active{background:var(--j9-primary-soft);color:var(--j9-primary);font-weight:600;}
.j9-nav a.is-active::before{content:"";position:absolute;left:0;top:8px;bottom:8px;width:3px;border-radius:3px;background:var(--j9-primary);}
.j9-dot{flex:none;width:6px;height:6px;border-radius:50%;background:currentColor;opacity:.5;}
.j9-sidebar-foot{margin-top:auto;padding-top:16px;border-top:1px solid var(--j9-line);}
.j9-sidebar-foot p{font-size:12px;color:var(--j9-muted);line-height:1.6;margin-bottom:10px;}
.j9-side-cta{
  display:flex;align-items:center;justify-content:center;height:42px;border-radius:8px;
  background:var(--j9-primary);color:#fff;font-size:14px;font-weight:600;
}
.j9-side-cta:hover{background:var(--j9-primary-dark);color:#fff;}

/* ============ 移动顶栏与抽屉 ============ */
.j9-topbar{
  display:none;position:sticky;top:0;z-index:70;height:56px;background:#fff;
  border-bottom:1px solid var(--j9-line);align-items:center;gap:10px;padding:0 12px;
}
.j9-burger{
  width:40px;height:40px;border:1px solid var(--j9-line);border-radius:8px;background:#fff;
  display:flex;flex-direction:column;justify-content:center;align-items:center;gap:4px;cursor:pointer;
}
.j9-burger span{display:block;width:18px;height:2px;background:var(--j9-ink);border-radius:2px;}
.j9-topbar-brand{display:flex;align-items:center;gap:8px;min-width:0;}
.j9-topbar-brand strong{font-size:13px;line-height:1.25;color:var(--j9-ink);display:block;}
.j9-topbar-brand .j9-logo-mark{width:30px;height:30px;border-radius:8px;font-size:14px;}
.j9-topbar-cta{margin-left:auto;font-size:13px;color:var(--j9-primary);font-weight:600;white-space:nowrap;}
.j9-mask{
  display:none;position:fixed;inset:0;background:rgba(19,33,43,.35);z-index:80;
}
.j9-mask.is-open{display:block;}

/* ============ 主内容 ============ */
.j9-main{margin-left:var(--j9-side);}
.j9-container{max-width:1180px;margin:0 auto;padding:0 32px;}
.j9-section{padding:72px 0;}
.j9-section--tight{padding:56px 0;}
.j9-section-head{max-width:760px;margin-bottom:32px;}
.j9-eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:600;
  color:var(--j9-primary);background:var(--j9-primary-soft);
  padding:5px 12px;border-radius:999px;margin-bottom:14px;
}
.j9-h2{font-size:30px;line-height:1.35;font-weight:700;color:var(--j9-ink);}
.j9-h3{font-size:20px;line-height:1.5;font-weight:600;color:var(--j9-ink);}
.j9-lead{font-size:16px;color:var(--j9-muted);margin-top:14px;line-height:1.8;}

/* ============ Hero ============ */
.j9-hero{background:#fff;border-bottom:1px solid var(--j9-line);}
.j9-hero-inner{
  display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center;
  min-height:340px;padding:44px 0 48px;
}
.j9-hero h1{font-size:42px;line-height:1.25;font-weight:700;}
.j9-hero h1 em{font-style:normal;color:var(--j9-primary);}
.j9-hero-sub{font-size:17px;color:var(--j9-muted);margin-top:18px;max-width:560px;line-height:1.8;}
.j9-hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.j9-hero-media{position:relative;border-radius:14px;overflow:hidden;border:1px solid var(--j9-line);box-shadow:var(--j9-shadow);}
.j9-hero-media img{width:100%;height:290px;object-fit:cover;}
.j9-hero-media figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:14px 18px;font-size:13px;color:#fff;
  background:linear-gradient(to top,rgba(19,33,43,.72),rgba(19,33,43,0));
}
.j9-hero-meta{display:flex;flex-wrap:wrap;gap:22px;margin-top:26px;padding-top:20px;border-top:1px solid var(--j9-line);}
.j9-hero-meta div{font-size:13px;color:var(--j9-muted);}
.j9-hero-meta strong{display:block;font-size:17px;color:var(--j9-primary);font-weight:700;}

/* ============ 按钮 ============ */
.j9-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 22px;
  border-radius:var(--j9-radius-btn);font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:background-color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease,color .2s ease;
}
.j9-btn--primary{background:var(--j9-primary);color:#fff;box-shadow:0 6px 16px rgba(42,111,142,.22);}
.j9-btn--primary:hover{background:var(--j9-primary-dark);color:#fff;transform:translateY(-1px);}
.j9-btn--primary:active{transform:translateY(0);box-shadow:none;}
.j9-btn--ghost{background:#fff;color:var(--j9-primary);border-color:var(--j9-primary);}
.j9-btn--ghost:hover{background:var(--j9-primary-soft);color:var(--j9-primary-dark);border-color:var(--j9-primary-dark);}
.j9-btn--link{background:transparent;color:var(--j9-primary);padding:0;height:auto;font-weight:600;}
.j9-btn--link:hover{color:var(--j9-primary-dark);text-decoration:underline;}

/* ============ 卡片与图文 ============ */
.j9-card{
  background:var(--j9-surface);border:1px solid var(--j9-line);border-radius:var(--j9-radius-card);
  box-shadow:var(--j9-shadow);padding:26px;transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.j9-card:hover{transform:translateY(-2px);box-shadow:var(--j9-shadow-hover);border-color:#c6dde8;}
.j9-card p{color:var(--j9-muted);font-size:15.5px;margin-top:10px;}
.j9-num{
  display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:10px;
  background:var(--j9-primary-soft);color:var(--j9-primary);font-weight:700;font-size:15px;margin-bottom:16px;
}
.j9-num--accent{background:var(--j9-accent-soft);color:var(--j9-accent);}
.j9-steps{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--j9-gap);}
.j9-steps .j9-card{display:flex;flex-direction:column;}
.j9-steps .j9-card ul{margin-top:14px;display:flex;flex-direction:column;gap:8px;}
.j9-steps .j9-card li{position:relative;padding-left:16px;font-size:14.5px;color:var(--j9-muted);line-height:1.7;}
.j9-steps .j9-card li::before{content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:50%;background:var(--j9-primary);opacity:.7;}

.j9-split{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;}
.j9-split img{width:100%;height:320px;object-fit:cover;border-radius:12px;border:1px solid var(--j9-line);}
.j9-check{display:flex;flex-direction:column;gap:14px;margin-top:22px;}
.j9-check li{display:flex;gap:12px;font-size:15.5px;color:var(--j9-muted);line-height:1.75;}
.j9-check b{color:var(--j9-ink);font-weight:600;}
.j9-tick{
  flex:none;width:22px;height:22px;border-radius:6px;background:var(--j9-primary-soft);color:var(--j9-primary);
  font-size:13px;display:flex;align-items:center;justify-content:center;margin-top:4px;font-weight:700;
}

/* ============ 注意事项 callout ============ */
.j9-callout{
  background:var(--j9-accent-soft);border-left:4px solid var(--j9-accent);border-radius:10px;
  padding:22px 26px;display:flex;gap:18px;align-items:flex-start;
}
.j9-callout h3{font-size:18px;color:#8a4f18;margin-bottom:8px;}
.j9-callout p{font-size:15px;color:#7a4a1e;line-height:1.8;}
.j9-callout-icon{
  flex:none;width:36px;height:36px;border-radius:9px;background:#fff;color:var(--j9-accent);
  font-weight:700;font-size:18px;display:flex;align-items:center;justify-content:center;
}

/* ============ 对照清单 ============ */
.j9-compare{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--j9-gap);}
.j9-compare .j9-card{padding:28px;}
.j9-compare h3{font-size:19px;display:flex;align-items:center;gap:10px;}
.j9-tag{
  display:inline-flex;align-items:center;font-size:12px;font-weight:600;padding:4px 10px;border-radius:999px;
  background:var(--j9-primary-soft);color:var(--j9-primary);
}
.j9-tag--warn{background:#FBEAE6;color:var(--j9-warn);}
.j9-compare ul{margin-top:16px;display:flex;flex-direction:column;gap:10px;}
.j9-compare li{position:relative;padding-left:18px;font-size:15px;color:var(--j9-muted);line-height:1.75;}
.j9-compare li::before{content:"";position:absolute;left:0;top:10px;width:7px;height:7px;border-radius:50%;background:var(--j9-primary);}
.j9-compare .j9-card--warn li::before{background:var(--j9-warn);}

/* ============ FAQ ============ */
.j9-faq-wrap{max-width:880px;}
.j9-faq.accordion{border:none;background:transparent;margin:0;}
.j9-faq .accordion-item{
  border:1px solid var(--j9-line);border-radius:10px;background:#fff;margin-bottom:12px;
  box-shadow:0 6px 18px rgba(19,33,43,.05);overflow:hidden;
}
.j9-faq .accordion-title{
  display:flex;align-items:center;gap:12px;padding:18px 22px;font-size:16.5px;font-weight:600;
  color:var(--j9-ink);background:transparent;border:none;border-bottom:1px solid var(--j9-line);
}
.j9-faq .accordion-title::before{
  content:"+";flex:none;width:24px;height:24px;border-radius:7px;background:var(--j9-primary-soft);
  color:var(--j9-primary);font-size:16px;line-height:1;display:flex;align-items:center;justify-content:center;
}
.j9-faq .accordion-title:hover{background:var(--j9-primary-soft);color:var(--j9-primary);}
.j9-faq .accordion-item.is-active .accordion-title{color:var(--j9-primary);background:var(--j9-primary-soft);border-bottom-color:transparent;}
.j9-faq .accordion-item.is-active .accordion-title::before{content:"–";}
.j9-faq .accordion-content{padding:16px 22px 20px;border-top:none;}
.j9-faq .accordion-content p{font-size:15.5px;color:var(--j9-muted);line-height:1.85;}

/* ============ CTA 与表单 ============ */
.j9-cta{background:#fff;border-top:1px solid var(--j9-line);border-bottom:1px solid var(--j9-line);}
.j9-cta-grid{display:grid;grid-template-columns:.95fr 1.05fr;gap:32px;align-items:start;}
.j9-info-card{
  background:var(--j9-primary-soft);border:1px solid #cfe3ec;border-radius:var(--j9-radius-card);padding:30px;
}
.j9-info-card h3{font-size:20px;margin-bottom:12px;}
.j9-info-card p{font-size:15px;color:var(--j9-muted);line-height:1.8;}
.j9-info-list{margin-top:20px;display:flex;flex-direction:column;gap:14px;}
.j9-info-list li{display:flex;gap:12px;font-size:15px;color:var(--j9-ink);}
.j9-info-list span{color:var(--j9-muted);min-width:76px;display:inline-block;}
.j9-form{background:#fff;border:1px solid var(--j9-line);border-radius:var(--j9-radius-card);padding:30px;box-shadow:var(--j9-shadow);}
.j9-field{margin-bottom:18px;}
.j9-field label{display:block;font-size:14px;font-weight:600;color:var(--j9-ink);margin-bottom:8px;}
.j9-field input,.j9-field textarea{
  width:100%;border:1px solid var(--j9-line);border-radius:8px;background:#FBFDFE;
  padding:11px 14px;font-size:15px;font-family:inherit;color:var(--j9-ink);transition:border-color .2s ease,box-shadow .2s ease;
}
.j9-field input{height:44px;}
.j9-field textarea{min-height:120px;resize:vertical;line-height:1.7;}
.j9-field input:focus,.j9-field textarea:focus{outline:none;border-color:var(--j9-primary);box-shadow:0 0 0 3px rgba(42,111,142,.14);background:#fff;}
.j9-form-note{font-size:13px;color:var(--j9-muted);margin-top:12px;line-height:1.7;}

/* ============ 页脚 ============ */
.j9-footer{background:#fff;border-top:1px solid var(--j9-line);padding:56px 0 24px;}
.j9-footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:32px;}
.j9-footer-brand{display:flex;gap:12px;align-items:flex-start;}
.j9-footer-brand strong{display:block;font-size:15px;margin-bottom:8px;}
.j9-footer-brand p{font-size:13.5px;color:var(--j9-muted);line-height:1.8;}
.j9-footer h4{font-size:14px;color:var(--j9-ink);margin-bottom:14px;}
.j9-footer ul{display:flex;flex-direction:column;gap:10px;}
.j9-footer li{font-size:13.5px;color:var(--j9-muted);}
.j9-footer li a{color:var(--j9-muted);}
.j9-footer li a:hover{color:var(--j9-primary);text-decoration:underline;}
.j9-footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid var(--j9-line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:12.5px;color:var(--j9-muted);
}

/* ============ 响应式 ============ */
@media (max-width:1279px) and (min-width:1024px){
  :root{--j9-side:200px;}
  .j9-hero h1{font-size:36px;}
}
@media (max-width:1023px){
  .j9-sidebar{
    width:280px;transform:translateX(-100%);transition:transform .26s ease;
    box-shadow:0 0 40px rgba(19,33,43,.16);
  }
  .j9-sidebar.is-open{transform:translateX(0);}
  .j9-topbar{display:flex;}
  .j9-main{margin-left:0;}
  .j9-container{padding:0 20px;}
  .j9-section{padding:56px 0;}
  .j9-hero-inner{grid-template-columns:1fr;gap:28px;padding:32px 0 40px;min-height:0;}
  .j9-hero h1{font-size:32px;}
  .j9-hero-media img{height:250px;}
  .j9-h2{font-size:24px;}
  .j9-split{grid-template-columns:1fr;gap:26px;}
  .j9-split img{height:260px;}
  .j9-cta-grid{grid-template-columns:1fr;}
  .j9-footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:639px){
  body{font-size:16px;}
  .j9-container{padding:0 16px;}
  .j9-section{padding:48px 0;}
  .j9-hero h1{font-size:30px;}
  .j9-hero-sub{font-size:16px;}
  .j9-hero-actions .j9-btn{width:100%;}
  .j9-hero-media img{height:210px;}
  .j9-steps{grid-template-columns:1fr;}
  .j9-compare{grid-template-columns:1fr;}
  .j9-split img{height:200px;}
  .j9-card,.j9-form,.j9-info-card{padding:20px;}
  .j9-callout{padding:18px 18px;flex-direction:column;gap:12px;}
  .j9-faq .accordion-title{font-size:15.5px;padding:16px 16px;}
  .j9-faq .accordion-content{padding:14px 16px 18px;}
  .j9-footer-grid{grid-template-columns:1fr;gap:26px;}
  .j9-footer-bottom{flex-direction:column;gap:8px;}
}

/* roulang page: category2 */
:root{
  --j9-primary:#2A6F8E;
  --j9-primary-dark:#1E5873;
  --j9-primary-soft:#EAF3F7;
  --j9-accent:#D9823B;
  --j9-accent-soft:#FBF0E6;
  --j9-bg:#F6F9FB;
  --j9-surface:#FFFFFF;
  --j9-ink:#13212B;
  --j9-muted:#5C6F7A;
  --j9-line:#DDE8EE;
  --j9-success:#2F8F6B;
  --j9-warn:#C2553D;
  --j9-radius-card:12px;
  --j9-radius-btn:8px;
  --j9-radius-pill:999px;
  --j9-shadow:0 10px 30px rgba(19,33,43,.08);
  --j9-shadow-hover:0 16px 36px rgba(19,33,43,.12);
  --j9-side-w:232px;
  --j9-mobile-bar:56px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  padding-left:var(--j9-side-w);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Helvetica Neue",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--j9-ink);
  background:var(--j9-bg);
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
img{max-width:100%;display:block;}
a{color:var(--j9-primary);text-decoration:none;transition:color .2s ease,border-color .2s ease;}
a:hover{color:var(--j9-primary-dark);}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--j9-accent);outline-offset:2px;}
.j9-container{width:100%;max-width:1180px;margin:0 auto;padding:0 32px;}
.j9-section{padding:80px 0;}
.j9-section--tight{padding:56px 0;}
.j9-section--alt{background:var(--j9-surface);border-top:1px solid var(--j9-line);border-bottom:1px solid var(--j9-line);}
.j9-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.2px;color:var(--j9-primary);
  background:var(--j9-primary-soft);border-radius:var(--j9-radius-pill);
  padding:5px 14px;margin-bottom:16px;font-weight:600;
}
.j9-eyebrow--accent{color:#9A5420;background:var(--j9-accent-soft);}
.j9-h1{font-size:44px;line-height:1.25;font-weight:700;letter-spacing:.2px;}
.j9-h2{font-size:30px;line-height:1.35;font-weight:700;}
.j9-h3{font-size:21px;line-height:1.45;font-weight:600;}
.j9-lead{font-size:17px;line-height:1.8;color:var(--j9-muted);}
.j9-muted{color:var(--j9-muted);font-size:14px;}
.j9-section-head{max-width:760px;margin-bottom:36px;}
.j9-section-head .j9-h2{margin-bottom:14px;}

/* ============ 桌面侧栏 ============ */
.j9-sidebar{
  position:fixed;top:0;left:0;width:var(--j9-side-w);height:100vh;
  background:var(--j9-surface);border-right:1px solid var(--j9-line);
  display:flex;flex-direction:column;z-index:60;
}
.j9-logo{
  display:flex;align-items:center;gap:10px;
  height:72px;padding:0 18px;border-bottom:1px solid var(--j9-line);flex:0 0 auto;
}
.j9-logo-mark{
  width:34px;height:34px;border-radius:10px;flex:0 0 auto;
  background:var(--j9-primary);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:700;
}
.j9-logo-text{font-size:13px;line-height:1.35;font-weight:700;color:var(--j9-ink);}
.j9-logo-text span{display:block;font-weight:400;font-size:12px;color:var(--j9-muted);}
.j9-nav{padding:18px 12px;display:flex;flex-direction:column;gap:6px;flex:1 1 auto;overflow-y:auto;}
.j9-nav a{
  position:relative;display:flex;align-items:center;gap:10px;
  min-height:44px;padding:8px 14px 8px 16px;border-radius:var(--j9-radius-btn);
  font-size:14px;color:var(--j9-muted);line-height:1.4;
}
.j9-nav a .j9-dot{
  width:6px;height:6px;border-radius:50%;background:var(--j9-line);flex:0 0 auto;
  transition:background .2s ease;
}
.j9-nav a:hover{background:var(--j9-primary-soft);color:var(--j9-primary);}
.j9-nav a:hover .j9-dot{background:var(--j9-primary);}
.j9-nav a.is-active{
  background:var(--j9-primary-soft);color:var(--j9-primary);font-weight:600;
}
.j9-nav a.is-active::before{
  content:"";position:absolute;left:0;top:8px;bottom:8px;width:3px;
  border-radius:0 3px 3px 0;background:var(--j9-primary);
}
.j9-nav a.is-active .j9-dot{background:var(--j9-primary);}
.j9-sidebar-foot{padding:16px;border-top:1px solid var(--j9-line);flex:0 0 auto;}
.j9-sidebar-foot .j9-btn{width:100%;justify-content:center;}
.j9-sidebar-foot p{margin-top:10px;font-size:12px;color:var(--j9-muted);line-height:1.6;}

/* ============ 移动顶栏与抽屉 ============ */
.j9-mobilebar{
  display:none;position:sticky;top:0;z-index:70;height:var(--j9-mobile-bar);
  background:var(--j9-surface);border-bottom:1px solid var(--j9-line);
  align-items:center;gap:10px;padding:0 12px;
}
.j9-burger{
  width:40px;height:40px;border:1px solid var(--j9-line);border-radius:var(--j9-radius-btn);
  background:var(--j9-surface);color:var(--j9-ink);display:flex;align-items:center;justify-content:center;
  cursor:pointer;font-size:16px;
}
.j9-burger:hover{border-color:var(--j9-primary);color:var(--j9-primary);}
.j9-mobilebar .j9-logo-text{font-size:12.5px;}
.j9-mobilebar-contact{
  margin-left:auto;width:40px;height:40px;border-radius:var(--j9-radius-btn);
  display:flex;align-items:center;justify-content:center;color:var(--j9-primary);
  border:1px solid var(--j9-line);
}
.j9-drawer{
  position:fixed;top:0;left:0;width:280px;height:100vh;background:var(--j9-surface);
  z-index:90;transform:translateX(-102%);transition:transform .28s ease;
  display:flex;flex-direction:column;box-shadow:0 20px 40px rgba(19,33,43,.16);
}
.j9-drawer.is-open{transform:translateX(0);}
.j9-mask{
  position:fixed;inset:0;background:rgba(19,33,43,.35);z-index:80;
  opacity:0;visibility:hidden;transition:opacity .28s ease,visibility .28s ease;
}
.j9-mask.is-open{opacity:1;visibility:visible;}

/* ============ 按钮 ============ */
.j9-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--j9-radius-btn);
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:background .2s ease,color .2s ease,box-shadow .2s ease,transform .2s ease,border-color .2s ease;
}
.j9-btn--primary{background:var(--j9-primary);color:#fff;}
.j9-btn--primary:hover{background:var(--j9-primary-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--j9-shadow);}
.j9-btn--primary:active{transform:translateY(0);background:var(--j9-primary-dark);}
.j9-btn--ghost{background:var(--j9-surface);color:var(--j9-primary);border-color:var(--j9-primary);}
.j9-btn--ghost:hover{background:var(--j9-primary-soft);color:var(--j9-primary-dark);}
.j9-btn--text{height:auto;padding:0;background:none;color:var(--j9-primary);font-weight:600;}
.j9-btn--text:hover{color:var(--j9-primary-dark);text-decoration:underline;text-underline-offset:4px;}
.j9-link-arrow{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:14px;}
.j9-link-arrow i{transition:transform .2s ease;font-size:12px;}
.j9-link-arrow:hover i{transform:translateX(4px);}

/* ============ Hero ============ */
.j9-hero{position:relative;overflow:hidden;background:var(--j9-surface);border-bottom:1px solid var(--j9-line);}
.j9-hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center right;
}
.j9-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(246,249,251,.97) 0%,rgba(246,249,251,.92) 46%,rgba(246,249,251,.62) 78%,rgba(246,249,251,.42) 100%);
}
.j9-hero-inner{position:relative;z-index:2;padding:64px 0 60px;max-width:760px;}
.j9-crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--j9-muted);margin-bottom:18px;
}
.j9-crumbs a{color:var(--j9-muted);}
.j9-crumbs a:hover{color:var(--j9-primary);}
.j9-crumbs span{color:var(--j9-line);}
.j9-hero h1{margin-bottom:18px;}
.j9-hero .j9-lead{max-width:620px;margin-bottom:28px;}
.j9-hero-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ============ 状态条 ============ */
.j9-statusbar{
  background:var(--j9-surface);border-bottom:1px solid var(--j9-line);
}
.j9-statusbar .j9-container{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px 28px;padding-top:16px;padding-bottom:16px;
  font-size:14px;color:var(--j9-muted);
}
.j9-status-pill{
  display:inline-flex;align-items:center;gap:8px;font-weight:600;color:var(--j9-success);
}
.j9-status-pill::before{
  content:"";width:8px;height:8px;border-radius:50%;background:var(--j9-success);
  box-shadow:0 0 0 4px rgba(47,143,107,.14);
}
.j9-statusbar strong{color:var(--j9-ink);font-weight:600;}

/* ============ 数据条 ============ */
.j9-metrics{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
  background:var(--j9-surface);border:1px solid var(--j9-line);border-radius:var(--j9-radius-card);
  box-shadow:var(--j9-shadow);padding:32px;
}
.j9-metric{padding-left:24px;border-left:1px solid var(--j9-line);}
.j9-metric:first-child{padding-left:0;border-left:none;}
.j9-metric strong{display:block;font-size:36px;line-height:1.2;color:var(--j9-primary);font-weight:700;}
.j9-metric span{display:block;margin-top:6px;font-size:14px;color:var(--j9-muted);}

/* ============ 时间线 ============ */
.j9-timeline{position:relative;}
.j9-timeline::before{
  content:"";position:absolute;left:8px;top:10px;bottom:10px;width:2px;
  background:linear-gradient(180deg,var(--j9-primary) 0%,var(--j9-line) 100%);
}
.j9-tl-item{position:relative;padding-left:40px;padding-bottom:34px;}
.j9-tl-item:last-child{padding-bottom:0;}
.j9-tl-item::before{
  content:"";position:absolute;left:0;top:6px;width:18px;height:18px;border-radius:50%;
  background:var(--j9-surface);border:3px solid var(--j9-primary);
  transition:transform .2s ease,border-color .2s ease;
}
.j9-tl-item:hover::before{transform:scale(1.12);border-color:var(--j9-accent);}
.j9-tl-date{display:block;font-size:13px;color:var(--j9-accent);font-weight:600;letter-spacing:.2px;margin-bottom:8px;}
.j9-tl-item h3{margin-bottom:10px;}
.j9-tl-item p{color:var(--j9-muted);font-size:15.5px;margin-bottom:12px;max-width:760px;}
.j9-tl-tag{
  display:inline-block;font-size:12px;padding:3px 12px;border-radius:var(--j9-radius-pill);
  background:var(--j9-primary-soft);color:var(--j9-primary);font-weight:600;margin-right:10px;
}
.j9-tl-tag--accent{background:var(--j9-accent-soft);color:#9A5420;}

/* ============ 图文 ============ */
.j9-split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
.j9-figure{border-radius:var(--j9-radius-card);overflow:hidden;border:1px solid var(--j9-line);box-shadow:var(--j9-shadow);}
.j9-figure img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3;transition:transform .35s ease;}
.j9-figure:hover img{transform:scale(1.03);}
.j9-figure figcaption{font-size:13px;color:var(--j9-muted);padding:12px 16px;background:var(--j9-surface);}
.j9-list{display:grid;gap:12px;margin-top:20px;}
.j9-list li{display:flex;gap:10px;align-items:flex-start;font-size:15.5px;color:var(--j9-muted);}
.j9-list i{color:var(--j9-primary);margin-top:5px;font-size:12px;}
.j9-callout{
  border-left:4px solid var(--j9-accent);background:var(--j9-accent-soft);
  border-radius:10px;padding:18px 22px;font-size:15px;color:#6E4318;margin-top:26px;
}
.j9-callout strong{color:#5A3612;}

/* ============ 分类速览 ============ */
.j9-brief{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.j9-brief-row{
  display:flex;gap:16px;align-items:flex-start;background:var(--j9-surface);
  border:1px solid var(--j9-line);border-radius:var(--j9-radius-card);
  padding:22px 24px;box-shadow:var(--j9-shadow);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.j9-brief-row:hover{transform:translateY(-2px);box-shadow:var(--j9-shadow-hover);border-color:#BFDCE8;}
.j9-brief-row i{
  width:42px;height:42px;flex:0 0 auto;border-radius:12px;background:var(--j9-primary-soft);
  color:var(--j9-primary);display:flex;align-items:center;justify-content:center;font-size:17px;
}
.j9-brief-row h3{font-size:18px;margin-bottom:6px;}
.j9-brief-row p{font-size:14.5px;color:var(--j9-muted);}

/* ============ 推荐入口 ============ */
.j9-entry{display:grid;gap:14px;}
.j9-entry a{
  display:flex;align-items:center;gap:18px;
  background:var(--j9-surface);border:1px solid var(--j9-line);border-radius:var(--j9-radius-card);
  padding:20px 24px;color:var(--j9-ink);box-shadow:var(--j9-shadow);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.j9-entry a:hover{transform:translateY(-2px);box-shadow:var(--j9-shadow-hover);border-color:#BFDCE8;color:var(--j9-primary);}
.j9-entry .j9-entry-no{
  font-size:13px;font-weight:700;color:var(--j9-accent);background:var(--j9-accent-soft);
  border-radius:var(--j9-radius-pill);padding:4px 12px;flex:0 0 auto;
}
.j9-entry .j9-entry-body{flex:1 1 auto;min-width:0;}
.j9-entry h3{font-size:17px;margin-bottom:4px;}
.j9-entry p{font-size:14px;color:var(--j9-muted);}
.j9-entry i.j9-entry-go{color:var(--j9-primary);opacity:.7;transition:transform .2s ease;}
.j9-entry a:hover i.j9-entry-go{transform:translateX(4px);}

/* ============ 表单与 CTA ============ */
.j9-cta{
  background:var(--j9-surface);border:1px solid var(--j9-line);border-radius:18px;
  box-shadow:var(--j9-shadow);padding:40px;display:grid;grid-template-columns:1fr 1fr;gap:40px;
}
.j9-info-list{display:grid;gap:16px;margin-top:22px;}
.j9-info-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--j9-muted);}
.j9-info-list i{color:var(--j9-primary);margin-top:4px;}
.j9-info-list strong{color:var(--j9-ink);}
.j9-form{display:grid;gap:16px;}
.j9-field{display:grid;gap:8px;}
.j9-field label{font-size:14px;font-weight:600;color:var(--j9-ink);}
.j9-field input,.j9-field textarea{
  width:100%;height:44px;padding:0 14px;border:1px solid var(--j9-line);
  border-radius:var(--j9-radius-btn);background:#fff;color:var(--j9-ink);
  font-size:15px;font-family:inherit;transition:border-color .2s ease,box-shadow .2s ease;
}
.j9-field textarea{height:120px;padding:12px 14px;line-height:1.7;resize:vertical;}
.j9-field input:focus,.j9-field textarea:focus{
  outline:none;border-color:var(--j9-primary);box-shadow:0 0 0 3px rgba(42,111,142,.14);
}
.j9-form-note{font-size:13px;color:var(--j9-muted);}
.j9-form-msg{font-size:14px;color:var(--j9-success);font-weight:600;display:none;}
.j9-form-msg.is-show{display:block;}

/* ============ 页脚 ============ */
.j9-footer{background:#0F2A38;color:#C9DCE5;padding:56px 0 24px;margin-top:0;}
.j9-footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;}
.j9-footer-brand{display:flex;gap:14px;align-items:flex-start;}
.j9-footer-brand .j9-logo-mark{background:var(--j9-primary);}
.j9-footer-brand strong{color:#fff;font-size:15px;display:block;margin-bottom:10px;}
.j9-footer-brand p{font-size:14px;line-height:1.8;color:#9FBBC8;}
.j9-footer h4{color:#fff;font-size:15px;margin-bottom:16px;}
.j9-footer ul{display:grid;gap:10px;}
.j9-footer ul li{font-size:14px;color:#9FBBC8;}
.j9-footer a{color:#9FBBC8;}
.j9-footer a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px;}
.j9-footer-bottom{
  margin-top:36px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:13px;color:#8FAEBC;
}

/* ============ 响应式 ============ */
@media (max-width:1180px){
  .j9-hero-inner{padding:56px 0 52px;}
  .j9-h1{font-size:40px;}
}
@media (max-width:1023px){
  body{padding-left:0;padding-top:var(--j9-mobile-bar);}
  .j9-sidebar{display:none;}
  .j9-mobilebar{display:flex;}
  .j9-container{padding:0 20px;}
  .j9-section{padding:56px 0;}
  .j9-h1{font-size:34px;}
  .j9-h2{font-size:25px;}
  .j9-split{gap:32px;}
  .j9-cta{grid-template-columns:1fr;padding:30px;gap:28px;}
  .j9-footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:767px){
  .j9-metrics{grid-template-columns:1fr 1fr;gap:20px;padding:24px;}
  .j9-metric:nth-child(3){padding-left:0;border-left:none;}
  .j9-brief{grid-template-columns:1fr;}
  .j9-split{grid-template-columns:1fr;}
  .j9-hero-inner{padding:44px 0 42px;}
  .j9-h1{font-size:31px;}
  .j9-h2{font-size:23px;}
  .j9-hero-actions .j9-btn{width:100%;}
}
@media (max-width:520px){
  .j9-container{padding:0 16px;}
  .j9-section{padding:48px 0;}
  .j9-metrics{grid-template-columns:1fr;gap:18px;}
  .j9-metric{padding-left:0;border-left:none;border-top:1px solid var(--j9-line);padding-top:16px;}
  .j9-metric:first-child{border-top:none;padding-top:0;}
  .j9-h1{font-size:30px;}
  .j9-footer-grid{grid-template-columns:1fr;}
  .j9-entry a{flex-wrap:wrap;gap:12px;}
  .j9-tl-item{padding-bottom:28px;}
}

/* roulang page: category3 */
:root{
  --j9-primary:#2A6F8E;
  --j9-primary-dark:#1E5873;
  --j9-primary-soft:#EAF3F7;
  --j9-accent:#D9823B;
  --j9-accent-soft:#FBF0E6;
  --j9-bg:#F6F9FB;
  --j9-surface:#FFFFFF;
  --j9-ink:#13212B;
  --j9-muted:#5C6F7A;
  --j9-line:#DDE8EE;
  --j9-success:#2F8F6B;
  --j9-warn:#C2553D;
  --j9-radius-card:12px;
  --j9-radius-btn:8px;
  --j9-shadow:0 10px 30px rgba(19,33,43,.08);
  --j9-shadow-hover:0 16px 36px rgba(19,33,43,.12);
  --j9-sidebar:232px;
  --j9-section:80px;
}
*,*::before,*::after{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,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--j9-ink);
  background:var(--j9-bg);
  letter-spacing:0;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--j9-primary);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--j9-primary-dark);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--j9-ink);letter-spacing:0;}
p{margin:0 0 16px;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--j9-accent);outline-offset:2px;}

/* ---------- 布局骨架 ---------- */
.j9-shell{padding-left:var(--j9-sidebar);min-height:100vh;}
.j9-main{max-width:1180px;margin:0 auto;padding:0 32px;}
.j9-section{padding:var(--j9-section) 0;}
.j9-section--tight{padding:56px 0;}
.j9-section-head{max-width:760px;margin-bottom:32px;}
.j9-eyebrow{
  display:inline-block;font-size:12px;letter-spacing:.4px;color:var(--j9-primary);
  background:var(--j9-primary-soft);border-radius:999px;padding:4px 12px;margin-bottom:14px;
}
.j9-h2{font-size:30px;line-height:1.35;margin-bottom:12px;}
.j9-sub{color:var(--j9-muted);font-size:16px;}

/* ---------- 侧栏 ---------- */
.j9-sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--j9-sidebar);
  background:var(--j9-surface);border-right:1px solid var(--j9-line);
  display:flex;flex-direction:column;z-index:60;
}
.j9-brand{
  display:flex;align-items:center;gap:10px;
  padding:16px 18px;min-height:72px;border-bottom:1px solid var(--j9-line);
}
.j9-logo-mark{
  width:36px;height:36px;flex:0 0 36px;border-radius:10px;
  background:var(--j9-primary);color:#fff;font-size:17px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
}
.j9-brand-text{font-size:13px;font-weight:700;line-height:1.35;color:var(--j9-ink);}
.j9-brand-text span{display:block;font-size:11px;font-weight:400;color:var(--j9-muted);letter-spacing:.3px;margin-top:2px;}
.j9-nav{padding:16px 12px;display:flex;flex-direction:column;gap:4px;overflow-y:auto;}
.j9-nav a{
  position:relative;display:flex;align-items:center;gap:10px;
  height:44px;padding:0 12px 0 16px;border-radius:8px;
  font-size:14px;color:var(--j9-muted);transition:background .2s ease,color .2s ease;
}
.j9-nav a .j9-dot{
  width:6px;height:6px;border-radius:50%;background:var(--j9-line);flex:0 0 6px;transition:background .2s ease;
}
.j9-nav a:hover{background:var(--j9-primary-soft);color:var(--j9-primary);}
.j9-nav a:hover .j9-dot{background:var(--j9-primary);}
.j9-nav a.is-active{background:var(--j9-primary-soft);color:var(--j9-primary);font-weight:600;}
.j9-nav a.is-active .j9-dot{background:var(--j9-primary);}
.j9-nav a.is-active::before{
  content:"";position:absolute;left:4px;top:10px;bottom:10px;width:3px;border-radius:2px;background:var(--j9-primary);
}
.j9-sidefoot{margin-top:auto;padding:16px;border-top:1px solid var(--j9-line);}
.j9-sidefoot p{font-size:12px;color:var(--j9-muted);line-height:1.6;margin-bottom:12px;}

/* ---------- 移动顶栏和抽屉 ---------- */
.j9-topbar{
  display:none;position:sticky;top:0;z-index:70;height:56px;
  background:var(--j9-surface);border-bottom:1px solid var(--j9-line);
  align-items:center;gap:10px;padding:0 12px;
}
.j9-burger{
  width:40px;height:40px;border-radius:8px;border:1px solid var(--j9-line);
  background:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;cursor:pointer;
}
.j9-burger span{display:block;width:16px;height:2px;background:var(--j9-ink);border-radius:2px;}
.j9-topbar-brand{font-size:13px;font-weight:700;line-height:1.25;color:var(--j9-ink);}
.j9-topbar-brand em{display:block;font-style:normal;font-size:11px;font-weight:400;color:var(--j9-muted);}
.j9-topbar-cta{
  margin-left:auto;font-size:12px;padding:7px 12px;border-radius:999px;
  background:var(--j9-primary-soft);color:var(--j9-primary);font-weight:600;
}
.j9-mask{
  display:none;position:fixed;inset:0;background:rgba(19,33,43,.35);z-index:65;
}
.j9-mask.is-open{display:block;}

/* ---------- 通用组件 ---------- */
.j9-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--j9-radius-btn);
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:background .2s ease,color .2s ease,box-shadow .2s ease,transform .2s ease,border-color .2s ease;
}
.j9-btn--primary{background:var(--j9-primary);color:#fff;box-shadow:0 8px 18px rgba(42,111,142,.22);}
.j9-btn--primary:hover{background:var(--j9-primary-dark);color:#fff;transform:translateY(-1px);}
.j9-btn--primary:active{transform:translateY(0);background:var(--j9-primary-dark);}
.j9-btn--ghost{background:#fff;color:var(--j9-primary);border-color:var(--j9-primary);}
.j9-btn--ghost:hover{background:var(--j9-primary-soft);color:var(--j9-primary-dark);border-color:var(--j9-primary-dark);}
.j9-btn--accent{background:var(--j9-accent);color:#fff;}
.j9-btn--accent:hover{background:#c47430;color:#fff;transform:translateY(-1px);}
.j9-btn-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}

.j9-tag{
  display:inline-block;font-size:12px;line-height:1;padding:6px 12px;border-radius:999px;
  background:var(--j9-primary-soft);color:var(--j9-primary);font-weight:600;
}
.j9-tag--accent{background:var(--j9-accent-soft);color:#a85f22;}

.j9-card{
  background:var(--j9-surface);border:1px solid var(--j9-line);border-radius:var(--j9-radius-card);
  box-shadow:var(--j9-shadow);padding:26px;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.j9-card:hover{transform:translateY(-2px);box-shadow:var(--j9-shadow-hover);border-color:#c5dbe6;}
.j9-card h3{font-size:20px;margin-bottom:10px;}
.j9-card p{font-size:15px;color:var(--j9-muted);}

.j9-img{
  border-radius:12px;overflow:hidden;background:var(--j9-primary-soft);
}
.j9-img img{width:100%;height:100%;object-fit:cover;border-radius:12px;transition:transform .4s ease;}
.j9-img:hover img{transform:scale(1.03);}

/* ---------- Hero ---------- */
.j9-hero{
  padding:52px 0 48px;background:linear-gradient(180deg,#ffffff 0%,var(--j9-bg) 100%);
  border-bottom:1px solid var(--j9-line);
}
.j9-hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:center;}
.j9-hero h1{font-size:42px;line-height:1.25;margin:14px 0 18px;}
.j9-hero p.j9-hero-sub{font-size:17px;color:var(--j9-muted);max-width:560px;}
.j9-hero-media{height:300px;}
.j9-crumb{font-size:13px;color:var(--j9-muted);margin-bottom:6px;}
.j9-crumb a{color:var(--j9-muted);}
.j9-crumb a:hover{color:var(--j9-primary);}
.j9-crumb span{margin:0 6px;}

/* ---------- 目录 + 内容 ---------- */
.j9-doc{display:grid;grid-template-columns:236px minmax(0,1fr);gap:44px;align-items:start;}
.j9-toc{
  position:sticky;top:28px;background:var(--j9-surface);border:1px solid var(--j9-line);
  border-radius:var(--j9-radius-card);box-shadow:var(--j9-shadow);padding:20px;
}
.j9-toc h2{font-size:14px;color:var(--j9-muted);font-weight:600;letter-spacing:.3px;margin-bottom:14px;}
.j9-toc ol{list-style:none;counter-reset:toc;margin:0;padding:0;display:flex;flex-direction:column;gap:2px;}
.j9-toc a{
  display:flex;gap:10px;align-items:baseline;font-size:14px;color:var(--j9-muted);
  padding:9px 10px;border-radius:8px;border-left:3px solid transparent;transition:all .2s ease;
}
.j9-toc a::before{
  counter-increment:toc;content:counter(toc,decimal-leading-zero);
  font-size:12px;color:var(--j9-accent);font-weight:700;
}
.j9-toc a:hover{background:var(--j9-primary-soft);color:var(--j9-primary);border-left-color:var(--j9-primary);}
.j9-toc-note{margin-top:16px;padding-top:14px;border-top:1px solid var(--j9-line);font-size:12px;color:var(--j9-muted);line-height:1.65;}

.j9-block{padding-bottom:64px;scroll-margin-top:24px;}
.j9-block:last-child{padding-bottom:0;}
.j9-block > h2{font-size:28px;line-height:1.35;margin-bottom:10px;}
.j9-block-lead{color:var(--j9-muted);font-size:16px;max-width:680px;margin-bottom:26px;}

.j9-split{display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:center;}
.j9-split--reverse .j9-split-media{order:2;}
.j9-split-media{height:260px;}
.j9-split-text h3{font-size:22px;margin-bottom:12px;}
.j9-split-text p{color:var(--j9-muted);font-size:16px;}

.j9-list-checks{display:flex;flex-direction:column;gap:12px;margin-top:16px;}
.j9-list-checks li{
  position:relative;padding-left:26px;font-size:15px;color:var(--j9-muted);line-height:1.7;
}
.j9-list-checks li::before{
  content:"";position:absolute;left:0;top:9px;width:14px;height:8px;
  border-left:2px solid var(--j9-success);border-bottom:2px solid var(--j9-success);
  transform:rotate(-45deg);border-radius:1px;
}
.j9-list-checks strong{color:var(--j9-ink);font-weight:600;}

/* ---------- 步骤卡 ---------- */
.j9-steps{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.j9-step{position:relative;padding:26px 24px 24px;}
.j9-step-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:10px;background:var(--j9-primary-soft);
  color:var(--j9-primary);font-weight:700;font-size:15px;margin-bottom:14px;
}
.j9-step h3{font-size:19px;margin-bottom:8px;}
.j9-step p{font-size:15px;color:var(--j9-muted);}

/* ---------- 提示卡 / callout ---------- */
.j9-callout{
  border-left:4px solid var(--j9-accent);background:var(--j9-accent-soft);
  border-radius:10px;padding:22px 24px;margin-top:8px;
}
.j9-callout h3{font-size:18px;margin-bottom:8px;color:#a85f22;}
.j9-callout p{font-size:15px;color:#7a4c1e;}

.j9-note-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;margin-top:6px;}
.j9-note{
  border:1px dashed var(--j9-line);border-radius:12px;padding:20px;background:#fff;
}
.j9-note h3{font-size:17px;margin-bottom:8px;}
.j9-note p{font-size:14px;color:var(--j9-muted);}

/* ---------- 排查顺序 ---------- */
.j9-order{display:flex;flex-direction:column;gap:0;margin-top:8px;}
.j9-order li{
  position:relative;padding:18px 0 18px 42px;border-bottom:1px solid var(--j9-line);
}
.j9-order li:last-child{border-bottom:0;}
.j9-order li::before{
  content:attr(data-index);position:absolute;left:0;top:18px;
  width:26px;height:26px;border-radius:50%;background:var(--j9-primary);color:#fff;
  font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;
}
.j9-order h3{font-size:17px;margin-bottom:4px;}
.j9-order p{font-size:14px;color:var(--j9-muted);}

/* ---------- FAQ ---------- */
.j9-acc{
  border:1px solid var(--j9-line);border-radius:12px;background:#fff;overflow:hidden;box-shadow:var(--j9-shadow);
}
.j9-acc__item + .j9-acc__item{border-top:1px solid var(--j9-line);}
.j9-acc__head{
  width:100%;display:flex;align-items:center;gap:14px;text-align:left;
  background:transparent;border:0;padding:18px 22px;cursor:pointer;
  font-size:16px;font-weight:600;color:var(--j9-ink);transition:background .2s ease,color .2s ease;
}
.j9-acc__head:hover{background:var(--j9-primary-soft);}
.j9-acc__item.is-open .j9-acc__head{color:var(--j9-primary);background:var(--j9-primary-soft);}
.j9-acc__plus{
  position:relative;width:18px;height:18px;flex:0 0 18px;margin-left:auto;
  border-radius:50%;border:1px solid var(--j9-line);transition:border-color .2s ease,transform .2s ease;
}
.j9-acc__plus::before,.j9-acc__plus::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--j9-muted);
  transform:translate(-50%,-50%);transition:background .2s ease,opacity .2s ease;
}
.j9-acc__plus::before{width:8px;height:1.5px;}
.j9-acc__plus::after{width:1.5px;height:8px;}
.j9-acc__item.is-open .j9-acc__plus{border-color:var(--j9-primary);transform:rotate(90deg);}
.j9-acc__item.is-open .j9-acc__plus::before,
.j9-acc__item.is-open .j9-acc__plus::after{background:var(--j9-primary);}
.j9-acc__item.is-open .j9-acc__plus::after{opacity:0;}
.j9-acc__body{padding:0 22px 20px;font-size:15px;color:var(--j9-muted);line-height:1.8;}
.j9-acc__body[hidden]{display:none;}

/* ---------- CTA / 联系 ---------- */
.j9-contact{
  background:var(--j9-surface);border-top:1px solid var(--j9-line);
}
.j9-contact-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:32px;align-items:start;}
.j9-info-card{
  background:linear-gradient(180deg,#ffffff 0%,var(--j9-primary-soft) 100%);
  border:1px solid var(--j9-line);border-radius:var(--j9-radius-card);padding:28px;box-shadow:var(--j9-shadow);
}
.j9-info-card h3{font-size:20px;margin-bottom:16px;}
.j9-info-list li{
  display:flex;gap:12px;font-size:15px;color:var(--j9-muted);padding:11px 0;border-bottom:1px dashed rgba(42,111,142,.18);
}
.j9-info-list li:last-child{border-bottom:0;}
.j9-info-list b{color:var(--j9-ink);font-weight:600;flex:0 0 76px;}

.j9-form{background:#fff;border:1px solid var(--j9-line);border-radius:var(--j9-radius-card);padding:28px;box-shadow:var(--j9-shadow);}
.j9-field{margin-bottom:18px;}
.j9-field label{display:block;font-size:14px;font-weight:600;color:var(--j9-ink);margin-bottom:7px;}
.j9-field input,.j9-field textarea{
  width:100%;height:44px;border:1px solid var(--j9-line);border-radius:8px;
  padding:0 14px;font-size:15px;color:var(--j9-ink);background:#fff;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.j9-field textarea{height:120px;padding:12px 14px;resize:vertical;line-height:1.7;}
.j9-field input:focus,.j9-field textarea:focus{
  outline:none;border-color:var(--j9-primary);box-shadow:0 0 0 3px rgba(42,111,142,.12);
}
.j9-form-tip{font-size:13px;color:var(--j9-muted);margin-top:12px;}
.j9-form-msg{
  display:none;margin-top:14px;font-size:14px;color:var(--j9-success);
  background:#EAF6F1;border-radius:8px;padding:10px 14px;
}
.j9-form-msg.is-show{display:block;}

/* ---------- 页脚 ---------- */
.j9-footer{background:#fff;border-top:1px solid var(--j9-line);padding:56px 0 28px;}
.j9-footer .j9-container{max-width:1180px;margin:0 auto;padding:0 32px;}
.j9-footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px;}
.j9-footer-brand{display:flex;gap:12px;align-items:flex-start;}
.j9-footer-brand strong{display:block;font-size:15px;margin-bottom:8px;}
.j9-footer-brand p{font-size:13px;color:var(--j9-muted);line-height:1.7;margin:0;}
.j9-footer h4{font-size:14px;margin-bottom:14px;color:var(--j9-ink);}
.j9-footer ul li{font-size:13px;color:var(--j9-muted);margin-bottom:10px;line-height:1.6;}
.j9-footer ul li a{color:var(--j9-muted);}
.j9-footer ul li a:hover{color:var(--j9-primary);text-decoration:underline;}
.j9-footer-bottom{
  margin-top:36px;padding-top:18px;border-top:1px solid var(--j9-line);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:var(--j9-muted);
}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1120px){
  :root{--j9-sidebar:200px;}
  .j9-hero h1{font-size:36px;}
  .j9-doc{grid-template-columns:200px minmax(0,1fr);gap:32px;}
}
@media screen and (max-width:1023px){
  :root{--j9-section:56px;}
  .j9-shell{padding-left:0;padding-top:0;}
  .j9-topbar{display:flex;}
  .j9-sidebar{transform:translateX(-100%);transition:transform .28s ease;width:280px;box-shadow:0 10px 40px rgba(19,33,43,.18);}
  .j9-sidebar.is-open{transform:translateX(0);}
  .j9-main{padding:0 24px;}
  .j9-footer .j9-container{padding:0 24px;}
  .j9-hero{padding:40px 0 36px;}
  .j9-hero-grid{grid-template-columns:1fr;gap:28px;}
  .j9-hero-media{height:230px;order:-1;}
  .j9-hero h1{font-size:32px;}
  .j9-doc{grid-template-columns:1fr;gap:28px;}
  .j9-toc{position:static;padding:16px;}
  .j9-toc ol{flex-direction:row;overflow-x:auto;gap:8px;padding-bottom:4px;}
  .j9-toc ol li{flex:0 0 auto;}
  .j9-toc a{border-left:0;border-bottom:3px solid transparent;white-space:nowrap;padding:8px 12px;background:var(--j9-bg);}
  .j9-toc a:hover{border-left:0;border-bottom-color:var(--j9-primary);}
  .j9-toc-note{display:none;}
  .j9-split{grid-template-columns:1fr;gap:24px;}
  .j9-split--reverse .j9-split-media{order:0;}
  .j9-split-media{height:220px;}
  .j9-contact-grid{grid-template-columns:1fr;gap:24px;}
  .j9-footer-grid{grid-template-columns:1fr 1fr;gap:26px;}
}
@media screen and (max-width:640px){
  :root{--j9-section:48px;}
  .j9-main{padding:0 16px;}
  .j9-footer .j9-container{padding:0 16px;}
  .j9-hero h1{font-size:30px;}
  .j9-hero p.j9-hero-sub{font-size:16px;}
  .j9-hero-media{height:190px;}
  .j9-h2{font-size:23px;}
  .j9-block > h2{font-size:23px;}
  .j9-split-text h3{font-size:19px;}
  .j9-steps{grid-template-columns:1fr;}
  .j9-note-grid{grid-template-columns:1fr;}
  .j9-card{padding:22px;}
  .j9-btn{width:100%;}
  .j9-btn-row{flex-direction:column;}
  .j9-acc__head{font-size:15px;padding:16px 16px;gap:10px;}
  .j9-acc__body{padding:0 16px 18px;font-size:14.5px;}
  .j9-footer-grid{grid-template-columns:1fr;gap:24px;}
  .j9-footer-bottom{flex-direction:column;}
  .j9-order li{padding-left:38px;}
  .j9-info-list b{flex:0 0 68px;}
}

/* roulang page: category4 */
:root{
  --j9-primary:#2A6F8E;
  --j9-primary-dark:#1E5873;
  --j9-primary-soft:#EAF3F7;
  --j9-accent:#D9823B;
  --j9-accent-soft:#FBF0E6;
  --j9-bg:#F6F9FB;
  --j9-surface:#FFFFFF;
  --j9-ink:#13212B;
  --j9-muted:#5C6F7A;
  --j9-line:#DDE8EE;
  --j9-ok:#2F8F6B;
  --j9-warn:#C2553D;
  --j9-radius-card:12px;
  --j9-radius-btn:8px;
  --j9-radius-pill:999px;
  --j9-shadow:0 10px 30px rgba(19,33,43,.08);
  --j9-shadow-hover:0 16px 36px rgba(19,33,43,.12);
  --j9-shell:232px;
  --j9-section:80px;
  --j9-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%;}
body{
  margin:0;
  font-family:var(--j9-font);
  font-size:16px;
  line-height:1.75;
  color:var(--j9-ink);
  background:var(--j9-bg);
  letter-spacing:0.2px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--j9-primary);text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease;}
a:hover{color:var(--j9-primary-dark);}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul{padding-left:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--j9-accent);outline-offset:2px;}

.j9-container{width:100%;max-width:1180px;margin:0 auto;padding:0 32px;}
.j9-section{padding:var(--j9-section) 0;}
.j9-section--tight{padding:56px 0;}
.j9-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:1px;color:var(--j9-primary);
  background:var(--j9-primary-soft);border-radius:var(--j9-radius-pill);
  padding:6px 14px;margin-bottom:18px;font-weight:600;
}
.j9-eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--j9-accent);display:inline-block;}
.j9-section-head{max-width:760px;margin-bottom:40px;}
.j9-section-head h2{font-size:30px;line-height:1.35;font-weight:700;}
.j9-section-head p{margin-top:14px;color:var(--j9-muted);font-size:16px;}

/* ============ 布局外壳 ============ */
.j9-shell{min-height:100vh;}

.j9-sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--j9-shell);
  background:var(--j9-surface);border-right:1px solid var(--j9-line);
  display:none;flex-direction:column;z-index:60;
}
.j9-sidebar-logo{
  display:flex;align-items:center;gap:12px;height:72px;
  padding:0 18px;border-bottom:1px solid var(--j9-line);flex:0 0 auto;
}
.j9-logo-mark{
  width:36px;height:36px;border-radius:10px;flex:0 0 auto;
  background:var(--j9-primary);color:#fff;font-size:17px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px rgba(42,111,142,.28);
}
.j9-logo-text{display:flex;flex-direction:column;line-height:1.25;font-size:13px;}
.j9-logo-text strong{color:var(--j9-ink);font-weight:700;font-size:14px;}
.j9-logo-text em{color:var(--j9-muted);font-style:normal;font-size:12px;}

.j9-nav{padding:18px 12px;display:flex;flex-direction:column;gap:6px;overflow-y:auto;flex:1 1 auto;}
.j9-nav a{
  position:relative;display:flex;align-items:center;gap:10px;
  min-height:44px;padding:10px 14px;border-radius:var(--j9-radius-btn);
  color:var(--j9-muted);font-size:14px;font-weight:500;
}
.j9-nav a .j9-dot{
  width:6px;height:6px;border-radius:50%;background:var(--j9-line);
  flex:0 0 auto;transition:background-color .2s ease;
}
.j9-nav a:hover{background:var(--j9-primary-soft);color:var(--j9-primary-dark);}
.j9-nav a:hover .j9-dot{background:var(--j9-primary);}
.j9-nav a.is-active{background:var(--j9-primary-soft);color:var(--j9-primary-dark);font-weight:600;}
.j9-nav a.is-active .j9-dot{background:var(--j9-accent);}
.j9-nav a.is-active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;
  border-radius:3px;background:var(--j9-primary);
}
.j9-sidebar-foot{padding:16px 16px 22px;border-top:1px solid var(--j9-line);flex:0 0 auto;}
.j9-sidebar-foot p{margin-top:12px;font-size:12px;color:var(--j9-muted);line-height:1.6;}

.j9-topbar{
  position:sticky;top:0;z-index:70;height:56px;
  display:flex;align-items:center;gap:10px;padding:0 14px;
  background:var(--j9-surface);border-bottom:1px solid var(--j9-line);
}
.j9-hamburger{
  width:40px;height:40px;border:1px solid var(--j9-line);border-radius:10px;
  background:var(--j9-surface);display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:4px;cursor:pointer;flex:0 0 auto;
}
.j9-hamburger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--j9-primary-dark);}
.j9-hamburger:hover{background:var(--j9-primary-soft);}
.j9-topbar-brand{display:flex;align-items:center;gap:8px;flex:1 1 auto;min-width:0;}
.j9-topbar-brand .j9-logo-mark{width:30px;height:30px;border-radius:8px;font-size:14px;}
.j9-topbar-name{font-size:13px;font-weight:700;color:var(--j9-ink);line-height:1.2;}
.j9-topbar-cta{
  flex:0 0 auto;font-size:13px;font-weight:600;color:var(--j9-primary);
  border:1px solid var(--j9-line);border-radius:var(--j9-radius-pill);
  padding:7px 14px;background:var(--j9-primary-soft);
}

.j9-drawer{
  position:fixed;top:0;left:0;bottom:0;width:280px;z-index:90;
  background:var(--j9-surface);border-right:1px solid var(--j9-line);
  transform:translateX(-100%);transition:transform .28s ease;
  display:flex;flex-direction:column;
}
.j9-drawer.is-open{transform:translateX(0);}
.j9-drawer-head{
  display:flex;align-items:center;justify-content:space-between;
  height:56px;padding:0 14px;border-bottom:1px solid var(--j9-line);flex:0 0 auto;
}
.j9-drawer-head .j9-drawer-title{font-size:13px;font-weight:700;color:var(--j9-ink);}
.j9-drawer-close{
  width:36px;height:36px;border-radius:10px;border:1px solid var(--j9-line);
  background:var(--j9-surface);color:var(--j9-muted);font-size:18px;cursor:pointer;line-height:1;
}
.j9-drawer-close:hover{background:var(--j9-primary-soft);color:var(--j9-primary-dark);}
.j9-overlay{
  position:fixed;inset:0;background:rgba(19,33,43,.35);
  opacity:0;visibility:hidden;transition:opacity .28s ease,visibility .28s ease;z-index:80;
}
.j9-overlay.is-open{opacity:1;visibility:visible;}

.j9-main{background:var(--j9-bg);}

/* ============ 按钮 / 徽章 ============ */
.j9-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--j9-radius-btn);
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:transform .18s ease,box-shadow .2s ease,background-color .2s ease,color .2s ease,border-color .2s ease;
}
.j9-btn-primary{background:var(--j9-primary);color:#fff;box-shadow:0 8px 20px rgba(42,111,142,.22);}
.j9-btn-primary:hover{background:var(--j9-primary-dark);color:#fff;transform:translateY(-1px);box-shadow:0 12px 26px rgba(42,111,142,.28);}
.j9-btn-primary:active{transform:translateY(0);box-shadow:0 6px 14px rgba(42,111,142,.22);}
.j9-btn-ghost{background:var(--j9-surface);color:var(--j9-primary);border-color:var(--j9-primary);}
.j9-btn-ghost:hover{background:var(--j9-primary-soft);color:var(--j9-primary-dark);border-color:var(--j9-primary-dark);}
.j9-btn-accent{background:var(--j9-accent);color:#fff;}
.j9-btn-accent:hover{background:#C4712F;color:#fff;transform:translateY(-1px);}
.j9-btn-block{width:100%;}
.j9-link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--j9-primary);}
.j9-link-more::after{content:"→";transition:transform .2s ease;}
.j9-link-more:hover{text-decoration:underline;text-underline-offset:3px;}
.j9-link-more:hover::after{transform:translateX(3px);}

.j9-badge{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;
  padding:5px 12px;border-radius:var(--j9-radius-pill);
  background:var(--j9-primary-soft);color:var(--j9-primary-dark);
}
.j9-badge--accent{background:var(--j9-accent-soft);color:#9A5620;}

/* ============ Hero ============ */
.j9-hero{
  position:relative;background:var(--j9-surface);
  border-bottom:1px solid var(--j9-line);overflow:hidden;
}
.j9-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(var(--j9-line) 1px,transparent 1px),linear-gradient(90deg,var(--j9-line) 1px,transparent 1px);
  background-size:56px 56px;opacity:.5;
  mask-image:linear-gradient(120deg,rgba(0,0,0,.55),transparent 62%);
  -webkit-mask-image:linear-gradient(120deg,rgba(0,0,0,.55),transparent 62%);
}
.j9-hero-grid{
  position:relative;z-index:1;
  display:grid;grid-template-columns:1fr;gap:36px;
  align-items:center;padding:52px 0 56px;
}
.j9-hero h1{font-size:34px;line-height:1.28;font-weight:700;}
.j9-hero .j9-hero-sub{
  margin-top:18px;font-size:17px;color:var(--j9-muted);max-width:560px;
}
.j9-hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.j9-hero-figure{
  border-radius:var(--j9-radius-card);overflow:hidden;
  border:1px solid var(--j9-line);box-shadow:var(--j9-shadow);
  aspect-ratio:16/10;background:var(--j9-primary-soft);
}
.j9-hero-figure img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.j9-hero-figure:hover img{transform:scale(1.03);}
.j9-hero-note{
  margin-top:20px;font-size:13px;color:var(--j9-muted);
  display:flex;align-items:center;gap:8px;
}
.j9-hero-note span{width:8px;height:8px;border-radius:50%;background:var(--j9-ok);flex:0 0 auto;}

/* 信任徽章条 */
.j9-trustbar{
  border-top:1px solid var(--j9-line);background:#FBFDFE;
  padding:22px 0;
}
.j9-trustbar-list{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));
  gap:14px 20px;
}
.j9-trust-item{display:flex;align-items:center;gap:10px;font-size:13.5px;color:var(--j9-muted);font-weight:500;}
.j9-trust-item svg{width:20px;height:20px;flex:0 0 auto;color:var(--j9-primary);}

/* ============ 双栏图文 ============ */
.j9-split{
  display:grid;grid-template-columns:1fr;gap:36px;align-items:center;
}
.j9-split-figure{
  border-radius:var(--j9-radius-card);overflow:hidden;
  border:1px solid var(--j9-line);box-shadow:var(--j9-shadow);
  background:var(--j9-surface);aspect-ratio:4/3;
}
.j9-split-figure img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.j9-split-figure:hover img{transform:scale(1.03);}
.j9-split h2{font-size:28px;line-height:1.35;font-weight:700;margin-bottom:16px;}
.j9-split p{color:var(--j9-muted);font-size:16px;}
.j9-split p + p{margin-top:14px;}
.j9-check{display:flex;flex-direction:column;gap:12px;margin-top:22px;}
.j9-check li{display:flex;gap:10px;font-size:15px;color:var(--j9-ink);}
.j9-check li i{
  width:20px;height:20px;border-radius:50%;flex:0 0 auto;margin-top:3px;
  background:var(--j9-primary-soft);color:var(--j9-primary-dark);
  font-style:normal;font-size:12px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
}
.j9-check li span{color:var(--j9-muted);}

/* ============ 数据条 ============ */
.j9-stats{
  background:var(--j9-surface);border-top:1px solid var(--j9-line);border-bottom:1px solid var(--j9-line);
}
.j9-stats-grid{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));
  gap:28px 20px;padding:44px 0;
}
.j9-stat{border-left:3px solid var(--j9-primary-soft);padding-left:16px;}
.j9-stat strong{display:block;font-size:34px;line-height:1.1;color:var(--j9-primary);font-weight:700;}
.j9-stat strong em{font-style:normal;font-size:16px;font-weight:600;margin-left:4px;color:var(--j9-muted);}
.j9-stat span{display:block;margin-top:8px;font-size:14px;color:var(--j9-muted);}

/* ============ 流程卡 ============ */
.j9-steps{display:grid;grid-template-columns:1fr;gap:24px;}
.j9-step{
  background:var(--j9-surface);border:1px solid var(--j9-line);
  border-radius:var(--j9-radius-card);padding:26px;
  box-shadow:var(--j9-shadow);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.j9-step:hover{transform:translateY(-2px);box-shadow:var(--j9-shadow-hover);border-color:#C6DCE6;}
.j9-step-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:12px;margin-bottom:16px;
  background:var(--j9-primary-soft);color:var(--j9-primary-dark);
  font-size:14px;font-weight:700;
}
.j9-step h3{font-size:19px;font-weight:600;margin-bottom:10px;}
.j9-step p{font-size:15px;color:var(--j9-muted);}

/* ============ 提示框 ============ */
.j9-callout{
  background:var(--j9-accent-soft);border-left:4px solid var(--j9-accent);
  border-radius:10px;padding:22px 24px;
}
.j9-callout h3{font-size:17px;font-weight:700;color:#8F4E1D;margin-bottom:8px;}
.j9-callout p{font-size:15px;color:#6E4522;line-height:1.8;}

/* ============ FAQ ============ */
.j9-accordion{
  margin:0;border:none;background:transparent;
  border-radius:var(--j9-radius-card);overflow:hidden;
  border:1px solid var(--j9-line);background:var(--j9-surface);
  box-shadow:var(--j9-shadow);
}
.j9-accordion .accordion-item{border:none;background:transparent;}
.j9-accordion .accordion-item + .accordion-item{border-top:1px solid var(--j9-line);}
.j9-accordion .accordion-title{
  position:relative;display:block;padding:20px 56px 20px 24px;
  font-size:16.5px;font-weight:600;color:var(--j9-ink);background:transparent;border:none;
  transition:background-color .2s ease,color .2s ease;
}
.j9-accordion .accordion-title::before{
  content:"";position:absolute;right:24px;top:50%;width:14px;height:2px;
  background:var(--j9-primary);border-radius:2px;transform:translateY(-50%);
}
.j9-accordion .accordion-title::after{
  content:"";position:absolute;right:29.5px;top:50%;width:2px;height:14px;
  background:var(--j9-primary);border-radius:2px;transform:translateY(-50%);
  transition:transform .22s ease,opacity .22s ease;
}
.j9-accordion .accordion-title:hover{background:var(--j9-primary-soft);color:var(--j9-primary-dark);}
.j9-accordion .accordion-item.is-active .accordion-title{background:var(--j9-primary-soft);color:var(--j9-primary-dark);}
.j9-accordion .accordion-item.is-active .accordion-title::after{transform:translateY(-50%) rotate(90deg);opacity:0;}
.j9-accordion .accordion-content{
  padding:0 24px 22px;border:none;background:var(--j9-primary-soft);color:var(--j9-muted);font-size:15.5px;
}
.j9-accordion .accordion-content p + p{margin-top:10px;}

/* ============ 联系区 ============ */
.j9-contact-grid{display:grid;grid-template-columns:1fr;gap:24px;}
.j9-info-card{
  background:var(--j9-surface);border:1px solid var(--j9-line);
  border-radius:var(--j9-radius-card);padding:30px;box-shadow:var(--j9-shadow);
}
.j9-info-card h3{font-size:20px;font-weight:700;margin-bottom:18px;}
.j9-info-list{display:flex;flex-direction:column;gap:18px;}
.j9-info-list li{display:flex;gap:14px;align-items:flex-start;font-size:15px;color:var(--j9-muted);}
.j9-info-list li b{display:block;color:var(--j9-ink);font-size:14px;font-weight:600;margin-bottom:2px;}
.j9-icon-box{
  width:38px;height:38px;border-radius:10px;flex:0 0 auto;
  background:var(--j9-primary-soft);color:var(--j9-primary-dark);
  display:flex;align-items:center;justify-content:center;
}
.j9-icon-box svg{width:18px;height:18px;}
.j9-form-card{
  background:var(--j9-surface);border:1px solid var(--j9-line);
  border-radius:var(--j9-radius-card);padding:30px;box-shadow:var(--j9-shadow);
}
.j9-form-card h3{font-size:20px;font-weight:700;margin-bottom:6px;}
.j9-form-card > p{font-size:14px;color:var(--j9-muted);margin-bottom:22px;}
.j9-field{margin-bottom:18px;}
.j9-field label{display:block;font-size:14px;font-weight:600;color:var(--j9-ink);margin-bottom:8px;}
.j9-field input,
.j9-field textarea{
  width:100%;height:44px;padding:0 14px;font-size:15px;font-family:inherit;color:var(--j9-ink);
  background:#FBFDFE;border:1px solid var(--j9-line);border-radius:var(--j9-radius-btn);
  transition:border-color .2s ease,box-shadow .2s ease,background-color .2s ease;
}
.j9-field textarea{height:auto;min-height:120px;padding:12px 14px;line-height:1.7;resize:vertical;}
.j9-field input::placeholder,
.j9-field textarea::placeholder{color:#9AABB4;}
.j9-field input:focus,
.j9-field textarea:focus{
  outline:none;border-color:var(--j9-primary);background:#fff;
  box-shadow:0 0 0 3px rgba(42,111,142,.14);
}
.j9-form-tip{font-size:13px;color:var(--j9-muted);margin-top:14px;}

/* ============ 页脚 ============ */
.j9-footer{background:#EFF5F8;border-top:1px solid var(--j9-line);padding:56px 0 26px;}
.j9-footer-grid{display:grid;grid-template-columns:1fr;gap:32px;}
.j9-footer-brand{display:flex;gap:14px;align-items:flex-start;}
.j9-footer-brand strong{font-size:15px;color:var(--j9-ink);display:block;margin-bottom:8px;}
.j9-footer-brand p{font-size:13.5px;color:var(--j9-muted);max-width:340px;}
.j9-footer h4{font-size:14px;font-weight:700;color:var(--j9-ink);margin-bottom:14px;}
.j9-footer ul{display:flex;flex-direction:column;gap:10px;}
.j9-footer ul li{font-size:13.5px;color:var(--j9-muted);}
.j9-footer ul a{color:var(--j9-muted);}
.j9-footer ul a:hover{color:var(--j9-primary-dark);text-decoration:underline;text-underline-offset:3px;}
.j9-footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid var(--j9-line);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:12.5px;color:var(--j9-muted);
}

/* ============ 响应式 ============ */
@media (min-width:640px){
  .j9-hero h1{font-size:38px;}
  .j9-trustbar-list{grid-template-columns:repeat(3,minmax(0,1fr));}
  .j9-stats-grid{grid-template-columns:repeat(4,minmax(0,1fr));}
  .j9-steps{grid-template-columns:repeat(2,minmax(0,1fr));}
  .j9-contact-grid{grid-template-columns:1fr 1.1fr;}
  .j9-footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;}
}
@media (min-width:900px){
  .j9-topbar{display:none;}
  .j9-drawer,.j9-overlay{display:none;}
  .j9-sidebar{display:flex;width:200px;}
  .j9-shell{padding-left:200px;}
  .j9-main{margin-left:0;}
  .j9-hero-grid{grid-template-columns:1.05fr .95fr;padding:56px 0 64px;}
  .j9-hero h1{font-size:42px;}
  .j9-trustbar-list{grid-template-columns:repeat(5,minmax(0,1fr));}
  .j9-split{grid-template-columns:1fr 1fr;gap:56px;}
  .j9-split--reverse .j9-split-figure{order:2;}
  .j9-section{--j9-section:80px;}
}
@media (min-width:1100px){
  .j9-sidebar{width:232px;}
  .j9-shell{padding-left:232px;}
  .j9-hero h1{font-size:46px;}
  .j9-section-head h2{font-size:32px;}
}
@media (max-width:639px){
  .j9-container{padding:0 16px;}
  .j9-section{padding:48px 0;}
  .j9-hero-grid{padding:38px 0 44px;}
  .j9-hero h1{font-size:30px;}
  .j9-hero .j9-hero-sub{font-size:16px;}
  .j9-hero-actions .j9-btn{width:100%;}
  .j9-section-head h2{font-size:23px;}
  .j9-split h2{font-size:23px;}
  .j9-stat strong{font-size:30px;}
  .j9-info-card,.j9-form-card{padding:22px;}
  .j9-accordion .accordion-title{padding:16px 48px 16px 18px;font-size:15.5px;}
  .j9-accordion .accordion-content{padding:0 18px 18px;}
}