/* roulang page: index */
:root{
  --brand:#1D5BA8;
  --brand-dark:#143F73;
  --brand-light:#E8F0FA;
  --accent:#E8892B;
  --green:#2E9E6B;
  --text:#4A5A6B;
  --head:#16202E;
  --muted:#7A8A9A;
  --line:#E3E9F0;
  --line-strong:#D7E1EC;
  --alt:#F5F8FB;
  --img-bg:#E9EFF6;
  --white:#FFFFFF;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --sh-1:0 2px 8px rgba(22,32,46,.06);
  --sh-2:0 10px 24px rgba(22,32,46,.10);
  --sh-3:0 6px 18px rgba(22,32,46,.08);
  --container:1200px;
  --sec:96px;
  --font:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",Arial,Helvetica,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--white);
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand);text-decoration:none;transition:color .18s ease,background-color .18s ease,border-color .18s ease;}
a:hover{color:var(--brand-dark);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,h5{margin:0;color:var(--head);font-family:var(--font);font-weight:700;line-height:1.35;}
h1{font-size:38px;font-weight:800;line-height:1.3;letter-spacing:-.5px;}
h2{font-size:29px;font-weight:700;}
h3{font-size:20px;font-weight:600;line-height:1.5;}
h4{font-size:17px;font-weight:600;line-height:1.5;}
p{margin:0 0 16px;}
p:last-child{margin-bottom:0;}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
::selection{background:var(--brand-light);color:var(--brand-dark);}

/* ---------- 容器与栅格 ---------- */
.container{max-width:var(--container);margin:0 auto;padding:0 24px;width:100%;}
.g{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;}
.c-3{grid-column:span 3;}
.c-4{grid-column:span 4;}
.c-5{grid-column:span 5;}
.c-6{grid-column:span 6;}
.c-7{grid-column:span 7;}
.c-8{grid-column:span 8;}
.c-12{grid-column:span 12;}

.section{padding:var(--sec) 0;}
.section--alt{background:var(--alt);}
.section-head{max-width:720px;margin-bottom:44px;}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--brand);
  background:var(--brand-light);border-radius:999px;padding:5px 14px;margin-bottom:16px;
  letter-spacing:.3px;
}
.section-head .eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);}
.section-head p{margin-top:14px;color:var(--muted);font-size:16px;}
.section-head--row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;max-width:none;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:all .18s ease;white-space:nowrap;
}
.btn i{font-size:14px;}
.btn--primary{background:var(--brand);color:#fff;box-shadow:var(--sh-1);}
.btn--primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn--primary:active{transform:translateY(1px);box-shadow:none;}
.btn--ghost{background:#fff;color:var(--head);border-color:var(--line-strong);}
.btn--ghost:hover{color:var(--brand);border-color:var(--brand);background:#fff;}
.btn--sm{height:40px;padding:0 18px;font-size:14px;}
.btn--block{width:100%;}
.btn[disabled]{opacity:.55;cursor:not-allowed;transform:none;box-shadow:none;}
.link-more{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand);
  position:relative;
}
.link-more::after{
  content:"";position:absolute;left:0;bottom:-4px;height:2px;width:100%;background:var(--brand);
  transform:scaleX(0);transform-origin:left;transition:transform .2s ease;
}
.link-more:hover::after{transform:scaleX(1);}

.badge{
  display:inline-block;font-size:12px;font-weight:600;line-height:1;
  padding:5px 10px;border-radius:999px;
  background:var(--brand-light);color:var(--brand);
}
.badge--accent{background:#fff;color:var(--accent);border:1px solid var(--accent);}

/* ---------- 头部导航 ---------- */
.site-header{position:sticky;top:0;z-index:120;background:#fff;box-shadow:var(--sh-3);}
.brand-row{display:flex;align-items:center;gap:24px;height:76px;}
.logo{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:800;color:var(--brand-dark);letter-spacing:-.3px;white-space:nowrap;}
.logo:hover{color:var(--brand);}
.logo-mark{
  width:38px;height:38px;border-radius:11px;flex:0 0 38px;
  background:linear-gradient(140deg,var(--brand) 0%,var(--brand-dark) 100%);
  color:#fff;font-size:16px;font-weight:800;display:flex;align-items:center;justify-content:center;
}
.logo small{display:block;font-size:11px;font-weight:500;color:var(--muted);letter-spacing:.4px;line-height:1.2;}
.logo-text{display:flex;flex-direction:column;line-height:1.25;}
.header-search{flex:1 1 auto;max-width:360px;position:relative;margin-left:auto;}
.header-search input{
  width:100%;height:40px;border-radius:var(--r-btn);border:1px solid var(--line-strong);
  padding:0 42px 0 14px;font-size:14px;background:var(--alt);transition:all .18s ease;
}
.header-search input:focus{
  background:#fff;border-color:var(--brand);box-shadow:0 0 0 3px rgba(29,91,168,.14);outline:none;
}
.header-search button{
  position:absolute;right:4px;top:4px;width:32px;height:32px;border:0;border-radius:8px;
  background:transparent;color:var(--muted);cursor:pointer;transition:all .18s ease;
}
.header-search button:hover{color:var(--brand);background:var(--brand-light);}
.header-actions{display:flex;align-items:center;gap:12px;}

.channel-row{border-top:1px solid var(--line);}
.channel-scroll{display:flex;align-items:center;gap:4px;overflow-x:auto;scrollbar-width:none;}
.channel-scroll::-webkit-scrollbar{display:none;}
.channel-link{
  display:flex;align-items:center;height:46px;padding:0 18px;font-size:15px;font-weight:500;
  color:var(--text);border-bottom:3px solid transparent;white-space:nowrap;
}
.channel-link:hover{color:var(--brand);}
.channel-link.is-active{color:var(--brand);font-weight:700;border-bottom-color:var(--accent);}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line-strong);border-radius:var(--r-btn);
  background:#fff;color:var(--head);cursor:pointer;font-size:17px;
}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand);}

.drawer{
  position:fixed;inset:0;z-index:200;visibility:hidden;pointer-events:none;
}
.drawer.is-open{visibility:visible;pointer-events:auto;}
.drawer-mask{position:absolute;inset:0;background:rgba(22,32,46,.45);opacity:0;transition:opacity .25s ease;}
.drawer.is-open .drawer-mask{opacity:1;}
.drawer-panel{
  position:absolute;top:0;right:0;width:82%;max-width:330px;height:100%;background:#fff;
  transform:translateX(100%);transition:transform .28s ease;padding:22px;overflow-y:auto;
}
.drawer.is-open .drawer-panel{transform:translateX(0);}
.drawer-title{font-size:13px;color:var(--muted);letter-spacing:1px;margin-bottom:12px;}
.drawer-nav a{
  display:block;padding:14px 0 14px 14px;font-size:16px;font-weight:500;color:var(--head);
  border-bottom:1px solid var(--line);border-left:3px solid transparent;
}
.drawer-nav a:hover{color:var(--brand);}
.drawer-nav a.is-active{color:var(--brand);font-weight:700;border-left-color:var(--brand);background:var(--brand-light);}
.drawer-actions{margin-top:22px;display:flex;flex-direction:column;gap:12px;}

/* ---------- Hero ---------- */
.hero{
  background:linear-gradient(135deg,#F5F8FB 0%,#E8F0FA 100%);
  padding:64px 0 56px;
}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;}
.hero h1{margin-bottom:18px;}
.hero h1 .hl{color:var(--brand);}
.hero-sub{font-size:17px;color:var(--text);max-width:520px;margin-bottom:28px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;}
.hero-tags span{
  font-size:13px;color:var(--brand-dark);background:#fff;border:1px solid var(--line);
  padding:6px 14px;border-radius:999px;
}
.hero-visual{position:relative;}
.hero-visual .hero-img{
  width:100%;height:400px;object-fit:cover;border-radius:16px;background:var(--img-bg);
  box-shadow:var(--sh-2);
}
.float-card{
  position:absolute;left:-22px;bottom:24px;background:#fff;border-radius:var(--r-card);
  box-shadow:var(--sh-3);padding:14px;display:flex;gap:12px;align-items:center;width:250px;
  border:1px solid var(--line);
}
.float-card img{width:64px;height:48px;object-fit:cover;border-radius:10px;background:var(--img-bg);}
.float-card .num{font-size:22px;font-weight:800;color:var(--brand);line-height:1.2;font-variant-numeric:tabular-nums;}
.float-card .lab{font-size:12px;color:var(--muted);}

.hero-stats{
  margin-top:48px;padding-top:28px;border-top:1px solid rgba(29,91,168,.16);
  display:grid;grid-template-columns:repeat(4,1fr);
}
.hero-stats .stat{padding:0 24px;border-left:1px solid rgba(29,91,168,.18);}
.hero-stats .stat:first-child{border-left:0;padding-left:0;}
.hero-stats .num{
  font-size:34px;font-weight:800;color:var(--brand-dark);line-height:1.2;font-variant-numeric:tabular-nums;
}
.hero-stats .lab{font-size:14px;color:var(--muted);margin-top:4px;}

/* ---------- 服务交错栅格 ---------- */
.service-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;}
.svc{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:26px;
  box-shadow:var(--sh-1);transition:all .25s ease;display:flex;flex-direction:column;
}
.svc:hover{box-shadow:var(--sh-2);border-color:#C9DCEF;transform:translateY(-3px);}
.svc:hover h3 a{color:var(--brand);}
.svc-icon{
  width:46px;height:46px;border-radius:12px;background:var(--brand-light);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-size:19px;margin-bottom:18px;
}
.svc h3{margin-bottom:10px;}
.svc h3 a{color:var(--head);}
.svc p{font-size:15px;margin-bottom:18px;}
.svc .link-more{margin-top:auto;}
.svc--wide{grid-column:span 6;}
.svc--third{grid-column:span 3;}
.svc--media{padding:0;overflow:hidden;}
.svc--media .svc-img{height:180px;width:100%;object-fit:cover;background:var(--img-bg);}
.svc--media .svc-inner{padding:24px;display:flex;flex-direction:column;flex:1;}
.svc--media .svc-inner p{margin-bottom:18px;}

/* ---------- 优势数据 ---------- */
.advantage-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:40px;}
.adv .num{
  font-size:44px;font-weight:800;color:var(--brand);line-height:1.1;font-variant-numeric:tabular-nums;
  position:relative;display:inline-block;
}
.adv .num::after{
  content:"";position:absolute;left:0;bottom:-8px;width:44px;height:3px;border-radius:2px;background:var(--accent);
}
.adv h4{margin:20px 0 8px;font-size:17px;}
.adv p{font-size:14px;color:var(--muted);margin:0;}

/* ---------- 案例 ---------- */
.case-row{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
.case-row + .case-row{margin-top:64px;}
.case-row--rev .case-media{order:2;}
.case-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-img);background:var(--img-bg);
  box-shadow:var(--sh-1);
}
.case-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px;}
.case-body h3{font-size:22px;margin-bottom:12px;}
.case-body p{font-size:15px;}
.case-points{margin:18px 0 22px;}
.case-points li{
  position:relative;padding-left:20px;font-size:15px;margin-bottom:10px;
}
.case-points li::before{
  content:"";position:absolute;left:0;top:10px;width:7px;height:7px;border-radius:2px;background:var(--brand);
}

/* ---------- 方案 sticky ---------- */
.plan-wrap{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start;}
.plan-side{position:sticky;top:150px;}
.plan-side h2{margin-bottom:14px;}
.plan-side p{font-size:15px;color:var(--muted);}
.plan-list{border-top:1px solid var(--line);}
.plan-item{
  display:flex;align-items:flex-start;gap:20px;padding:26px 18px;border-bottom:1px solid var(--line);
  transition:background-color .2s ease;border-radius:10px;
}
.plan-item:hover{background:var(--brand-light);}
.plan-no{
  font-size:15px;font-weight:800;color:var(--brand);font-variant-numeric:tabular-nums;
  min-width:36px;padding-top:4px;letter-spacing:.5px;
}
.plan-main{flex:1;}
.plan-main h3{margin-bottom:8px;}
.plan-main p{margin:0;font-size:15px;}
.plan-arrow{color:var(--muted);padding-top:8px;transition:all .2s ease;}
.plan-item:hover .plan-arrow{color:var(--brand);transform:translateX(4px);}

/* ---------- 资讯卡片 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--sh-1);transition:all .25s ease;display:flex;flex-direction:column;
}
.news-card:hover{box-shadow:var(--sh-2);border-color:#C9DCEF;transform:translateY(-3px);}
.news-media{display:block;overflow:hidden;background:var(--img-bg);}
.news-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .3s ease;}
.news-card:hover .news-media img{transform:scale(1.03);}
.news-body{padding:22px;display:flex;flex-direction:column;flex:1;}
.news-body h3{font-size:17px;margin:12px 0 10px;line-height:1.55;}
.news-body h3 a{
  color:var(--head);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-body h3 a:hover{color:var(--brand);}
.news-body p{
  font-size:14px;color:var(--muted);margin-bottom:16px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--muted);border-top:1px solid var(--line);padding-top:14px;
}
.news-meta .date{font-variant-numeric:tabular-nums;}
.news-meta a{font-weight:600;}
.empty-state{
  text-align:center;padding:56px 24px;background:#fff;border:1px dashed var(--line-strong);border-radius:var(--r-card);
}
.empty-state i{font-size:30px;color:var(--muted);margin-bottom:14px;display:block;}
.empty-state p{color:var(--muted);margin-bottom:16px;}

/* ---------- FAQ ---------- */
.faq-wrap{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start;}
.faq-side{position:sticky;top:150px;}
.faq-side h2{margin-bottom:14px;}
.faq-side p{font-size:15px;color:var(--muted);}
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:18px;
  min-height:62px;padding:12px 0;font-size:17px;font-weight:600;color:var(--head);
  transition:color .18s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--brand);}
.faq-item summary::after{
  content:"+";font-size:24px;font-weight:400;color:var(--muted);line-height:1;
  transition:transform .25s ease,color .25s ease;flex:0 0 auto;
}
.faq-item[open] summary{color:var(--brand);}
.faq-item[open] summary::after{transform:rotate(45deg);color:var(--brand);}
.faq-answer{padding:0 0 22px;font-size:15px;line-height:1.8;color:var(--text);max-width:680px;}

/* ---------- 表单 ---------- */
.contact-wrap{display:grid;grid-template-columns:5fr 7fr;gap:40px;align-items:start;}
.info-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:28px;box-shadow:var(--sh-1);
}
.info-card h3{margin-bottom:18px;}
.info-list li{display:flex;gap:14px;padding:14px 0;border-bottom:1px dashed var(--line);}
.info-list li:last-child{border-bottom:0;}
.info-list i{color:var(--brand);font-size:16px;margin-top:4px;width:18px;text-align:center;}
.info-list .k{font-size:14px;color:var(--muted);}
.info-list .v{font-size:15px;color:var(--head);font-weight:600;}
.map-box{
  margin-top:20px;height:170px;border-radius:var(--r-img);background:var(--img-bg);
  border:1px solid var(--line);display:flex;align-items:center;justify-content:center;
  color:var(--muted);font-size:14px;gap:8px;
}
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:28px;box-shadow:var(--sh-1);}
.form-card h3{margin-bottom:6px;}
.form-card .form-tip{font-size:14px;color:var(--muted);margin-bottom:22px;}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.field{display:flex;flex-direction:column;gap:8px;}
.field--full{grid-column:span 2;}
.field label{font-size:14px;color:var(--text);font-weight:500;}
.field input,.field select,.field textarea{
  border:1px solid var(--line-strong);border-radius:var(--r-btn);background:#fff;
  padding:0 14px;height:48px;font-size:15px;transition:all .18s ease;width:100%;
}
.field textarea{height:120px;padding:12px 14px;resize:vertical;line-height:1.7;}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--brand);box-shadow:0 0 0 3px rgba(29,91,168,.14);outline:none;
}
.field input:invalid:not(:placeholder-shown){border-color:#C2483A;}
.privacy-note{font-size:13px;color:var(--muted);margin-top:14px;}
.form-msg{
  margin-top:14px;font-size:14px;color:var(--green);display:none;
}
.form-msg.is-show{display:block;}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--brand-light);border-radius:var(--r-card);padding:36px 40px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;
}
.cta-band h3{font-size:24px;margin-bottom:8px;}
.cta-band p{margin:0;font-size:15px;color:var(--text);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--head);color:#C6D2DF;padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px;padding-bottom:44px;}
.footer-brand .logo{color:#fff;margin-bottom:16px;}
.footer-brand .logo:hover{color:#fff;}
.footer-brand .logo-mark{background:var(--brand);}
.footer-brand p{font-size:14px;color:#9FB0C2;max-width:290px;}
.footer-col h4{color:#fff;font-size:16px;margin-bottom:18px;}
.footer-col li{margin-bottom:12px;}
.footer-col a{color:#C6D2DF;font-size:14px;}
.footer-col a:hover{color:#fff;}
.footer-col .plain{font-size:14px;color:#9FB0C2;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:20px 0;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:#8FA2B6;
}
.footer-bottom a{color:#8FA2B6;}
.footer-bottom a:hover{color:#fff;}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .container{padding:0 20px;}
  :root{--sec:72px;}
  h1{font-size:33px;}
  .hero-visual .hero-img{height:340px;}
}
@media (max-width:991px){
  :root{--sec:64px;}
  h1{font-size:30px;}
  h2{font-size:25px;}
  .header-search{display:none;}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;}
  .header-actions .btn--ghost{display:none;}
  .channel-scroll{padding-right:12px;}
  .hero{padding:44px 0 40px;}
  .hero-grid{grid-template-columns:1fr;gap:32px;}
  .hero-visual .hero-img{height:300px;}
  .float-card{left:14px;bottom:14px;width:220px;}
  .hero-stats{grid-template-columns:repeat(2,1fr);gap:22px 0;}
  .hero-stats .stat:nth-child(3){border-left:0;padding-left:0;}
  .svc--wide,.svc--third{grid-column:span 6;}
  .advantage-grid{grid-template-columns:repeat(2,1fr);gap:32px;}
  .case-row{grid-template-columns:1fr;gap:24px;}
  .case-row--rev .case-media{order:0;}
  .plan-wrap,.faq-wrap,.contact-wrap{grid-template-columns:1fr;gap:32px;}
  .plan-side,.faq-side{position:static;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:575px){
  .container{padding:0 16px;}
  :root{--sec:52px;}
  body{font-size:16px;}
  h1{font-size:26px;letter-spacing:-.3px;}
  h2{font-size:22px;}
  .brand-row{height:66px;gap:12px;}
  .logo{font-size:16px;}
  .logo small{display:none;}
  .logo-mark{width:34px;height:34px;flex:0 0 34px;font-size:14px;}
  .header-actions .btn{display:none;}
  .hero{padding:34px 0 32px;}
  .hero-sub{font-size:16px;}
  .hero-actions{gap:10px;}
  .hero-actions .btn{width:100%;}
  .hero-visual .hero-img{height:230px;}
  .float-card{position:static;width:100%;margin-top:14px;}
  .hero-stats{grid-template-columns:1fr 1fr;padding-top:22px;margin-top:34px;}
  .hero-stats .stat{padding:0 12px;}
  .hero-stats .stat:first-child{padding-left:0;}
  .hero-stats .num{font-size:26px;}
  .hero-stats .lab{font-size:13px;}
  .svc--wide,.svc--third{grid-column:span 12;}
  .advantage-grid{grid-template-columns:1fr 1fr;gap:26px;}
  .adv .num{font-size:34px;}
  .news-grid{grid-template-columns:1fr;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:28px 22px;}
  .cta-band .btn{width:100%;}
  .form-grid{grid-template-columns:1fr;}
  .field--full{grid-column:span 1;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .section-head--row{flex-direction:column;align-items:flex-start;gap:14px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none !important;animation:none !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: article */
:root{
  --c-primary:#1D5BA8;
  --c-primary-dark:#143F73;
  --c-primary-light:#E8F0FA;
  --c-accent:#E8892B;
  --c-green:#2E9E6B;
  --c-heading:#16202E;
  --c-text:#4A5A6B;
  --c-muted:#7A8A9A;
  --c-line:#E3E9F0;
  --c-line-strong:#D7E1EC;
  --c-alt:#F5F8FB;
  --c-white:#FFFFFF;
  --c-img-bg:#E9EFF6;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-1:0 2px 8px rgba(22,32,46,.06);
  --sh-2:0 10px 24px rgba(22,32,46,.10);
  --sh-3:0 6px 18px rgba(22,32,46,.08);
  --font:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC","Helvetica Neue",Arial,Helvetica,sans-serif;
}

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

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

body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  color:var(--c-text);
  background:var(--c-white);
  -webkit-font-smoothing:antialiased;
}

h1,h2,h3,h4,h5{margin:0;color:var(--c-heading);font-family:var(--font);}
p{margin:0 0 16px;}
ul,ol{margin:0;padding:0;list-style:none;}
a{color:var(--c-primary);text-decoration:none;transition:color .18s ease,border-color .18s ease,background-color .18s ease;}
a:hover{color:var(--c-primary-dark);}
img{max-width:100%;display:block;border:0;}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;background:none;border:0;padding:0;}
table{border-collapse:collapse;width:100%;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 24px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  line-height:1;
  border:1px solid transparent;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
  white-space:nowrap;
}
.btn--primary{background:var(--c-primary);color:#fff;}
.btn--primary:hover{background:var(--c-primary-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-1);}
.btn--primary:active{transform:translateY(1px);box-shadow:none;}
.btn--ghost{background:#fff;border-color:var(--c-line-strong);color:var(--c-heading);}
.btn--ghost:hover{border-color:var(--c-primary);color:var(--c-primary);}
.btn--sm{height:40px;padding:0 18px;font-size:14px;}
.btn--link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--c-primary);
  padding-bottom:2px;border-bottom:2px solid transparent;
}
.btn--link:hover{border-bottom-color:var(--c-primary);color:var(--c-primary-dark);}

.badge{
  display:inline-block;
  font-size:12px;
  font-weight:600;
  line-height:1.4;
  padding:4px 10px;
  border-radius:var(--r-pill);
  background:var(--c-primary-light);
  color:var(--c-primary);
}
.badge--outline{background:#fff;border:1px solid var(--c-accent);color:#C46F16;}

/* ============ Header ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:50;
  background:#fff;
  border-bottom:1px solid var(--c-line);
  box-shadow:var(--sh-3);
}
.brand-row{
  display:flex;
  align-items:center;
  gap:24px;
  height:76px;
}
.logo{display:flex;align-items:center;gap:12px;flex:0 0 auto;color:var(--c-heading);}
.logo:hover{color:var(--c-primary-dark);}
.logo-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:12px;
  background:linear-gradient(135deg,#1D5BA8,#143F73);
  color:#fff;font-size:15px;font-weight:800;letter-spacing:.5px;
}
.logo-text{
  display:block;
  font-size:18px;
  font-weight:800;
  letter-spacing:-.3px;
  line-height:1.2;
  color:var(--c-primary-dark);
}
.logo-text small{
  display:block;
  margin-top:3px;
  font-size:12px;
  font-weight:500;
  letter-spacing:0;
  color:var(--c-muted);
}
.header-search{
  position:relative;
  flex:1 1 auto;
  max-width:420px;
  margin-left:auto;
}
.header-search input{
  width:100%;
  height:40px;
  padding:0 46px 0 16px;
  border:1px solid var(--c-line-strong);
  border-radius:var(--r-btn);
  background:var(--c-alt);
  font-size:14px;
  color:var(--c-heading);
  transition:border-color .18s ease,box-shadow .18s ease,background-color .18s ease;
}
.header-search input::placeholder{color:var(--c-muted);}
.header-search input:focus{
  outline:none;
  background:#fff;
  border-color:var(--c-primary);
  box-shadow:0 0 0 3px rgba(29,91,168,.14);
}
.header-search button{
  position:absolute;right:6px;top:50%;transform:translateY(-50%);
  width:32px;height:32px;border-radius:8px;
  color:var(--c-muted);
  display:flex;align-items:center;justify-content:center;
  transition:color .18s ease,background-color .18s ease;
}
.header-search button:hover{color:var(--c-primary);background:var(--c-primary-light);}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}

.nav-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:var(--r-btn);
  border:1px solid var(--c-line-strong);
  color:var(--c-heading);
  align-items:center;justify-content:center;
  font-size:17px;
}
.nav-toggle:hover{border-color:var(--c-primary);color:var(--c-primary);}

.channel-row{
  border-top:1px solid var(--c-line);
  background:#fff;
}
.channel-scroll{
  display:flex;
  align-items:center;
  gap:6px;
  height:56px;
  overflow-x:auto;
  scrollbar-width:none;
}
.channel-scroll::-webkit-scrollbar{display:none;}
.channel-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:44px;
  padding:0 18px;
  font-size:15px;
  font-weight:600;
  color:var(--c-text);
  white-space:nowrap;
  border-radius:8px;
  transition:color .18s ease,background-color .18s ease;
}
.channel-link:hover{color:var(--c-primary);background:var(--c-alt);}
.channel-link.is-active{color:var(--c-primary);}
.channel-link.is-active::after{
  content:"";
  position:absolute;
  left:18px;right:18px;bottom:2px;
  height:3px;border-radius:2px;
  background:var(--c-accent);
}

/* drawer */
.nav-mask{
  position:fixed;inset:0;background:rgba(22,32,46,.45);
  opacity:0;visibility:hidden;transition:opacity .26s ease,visibility .26s ease;z-index:60;
}
.nav-mask.is-open{opacity:1;visibility:visible;}
.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;
  width:min(320px,84vw);
  background:#fff;
  transform:translateX(100%);
  transition:transform .26s ease;
  z-index:61;
  display:flex;flex-direction:column;
  box-shadow:-8px 0 24px rgba(22,32,46,.14);
}
.nav-drawer.is-open{transform:translateX(0);}
.nav-drawer__head{
  display:flex;align-items:center;justify-content:space-between;
  height:64px;padding:0 20px;border-bottom:1px solid var(--c-line);
  font-size:15px;font-weight:700;color:var(--c-heading);
}
.nav-drawer__close{
  width:38px;height:38px;border-radius:9px;border:1px solid var(--c-line-strong);
  color:var(--c-heading);display:flex;align-items:center;justify-content:center;
}
.nav-drawer__body{padding:12px;overflow-y:auto;}
.nav-drawer__body a{
  display:block;
  padding:14px 14px;
  font-size:15px;font-weight:600;color:var(--c-text);
  border-radius:10px;
  border-left:3px solid transparent;
}
.nav-drawer__body a:hover{background:var(--c-alt);color:var(--c-primary);}
.nav-drawer__body a.is-active{color:var(--c-primary);border-left-color:var(--c-primary);background:var(--c-primary-light);}
.nav-drawer__foot{margin-top:auto;padding:18px 20px;border-top:1px solid var(--c-line);font-size:13px;color:var(--c-muted);}

/* ============ Breadcrumb ============ */
.crumbs{padding:16px 0 0;}
.crumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-muted);}
.crumbs li{display:flex;align-items:center;gap:8px;}
.crumbs li+li::before{content:"/";color:var(--c-line-strong);}
.crumbs a{color:var(--c-muted);}
.crumbs a:hover{color:var(--c-primary);}
.crumbs .current{color:var(--c-primary);font-weight:600;max-width:460px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ============ Article head ============ */
.article-head{padding:24px 0 28px;border-bottom:1px solid var(--c-line);}
.article-head h1{
  font-size:38px;
  font-weight:800;
  line-height:1.3;
  letter-spacing:-.5px;
  color:var(--c-heading);
  margin-bottom:16px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;
  font-size:13px;color:var(--c-muted);
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--c-line-strong);}
.article-lead{
  margin-top:18px;
  padding:16px 20px;
  background:var(--c-alt);
  border-left:3px solid var(--c-primary);
  border-radius:0 10px 10px 0;
  font-size:15px;
  line-height:1.85;
  color:#3C4E62;
}

/* ============ Layout ============ */
.article-wrap{padding:40px 0 72px;}
.article-grid{
  display:grid;
  grid-template-columns:minmax(0,1fr) 320px;
  gap:48px;
  align-items:start;
}
.article-main{min-width:0;}

.article-content{
  font-size:17px;
  line-height:1.9;
  color:var(--c-text);
}
.article-content > *:first-child{margin-top:0;}
.article-content p{margin:0 0 18px;}
.article-content strong{color:var(--c-heading);font-weight:600;}
.article-content h2{
  position:relative;
  font-size:26px;font-weight:700;line-height:1.4;
  color:var(--c-heading);
  margin:40px 0 14px;
  padding-left:16px;
}
.article-content h2::before{
  content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:4px;border-radius:2px;background:var(--c-primary);
}
.article-content h3{font-size:20px;font-weight:600;line-height:1.5;color:var(--c-heading);margin:28px 0 12px;}
.article-content h4{font-size:17px;font-weight:600;color:var(--c-heading);margin:22px 0 10px;}
.article-content ul{margin:0 0 18px;}
.article-content ul li{position:relative;padding-left:20px;margin-bottom:8px;}
.article-content ul li::before{
  content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;border-radius:2px;background:var(--c-primary);
}
.article-content ol{margin:0 0 18px;counter-reset:item;}
.article-content ol li{position:relative;padding-left:26px;margin-bottom:8px;counter-increment:item;}
.article-content ol li::before{
  content:counter(item);
  position:absolute;left:0;top:.35em;
  width:18px;height:18px;border-radius:5px;
  background:var(--c-primary-light);color:var(--c-primary);
  font-size:12px;font-weight:700;line-height:18px;text-align:center;
}
.article-content blockquote{
  margin:0 0 20px;
  padding:16px 20px;
  background:var(--c-primary-light);
  border-left:3px solid var(--c-primary);
  border-radius:0 10px 10px 0;
  color:#33465A;
  font-size:16px;
}
.article-content blockquote p:last-child{margin-bottom:0;}
.article-content img{
  width:auto;max-width:100%;height:auto;
  border-radius:var(--r-img);
  margin:6px auto 10px;
  background:var(--c-img-bg);
}
.article-content figure{margin:0 0 22px;}
.article-content figcaption{font-size:13px;color:var(--c-muted);text-align:center;}
.article-content a{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px;}
.article-content a:hover{color:var(--c-primary-dark);}
.article-content table{margin:0 0 20px;font-size:15px;border:1px solid var(--c-line);border-radius:var(--r-img);overflow:hidden;}
.article-content th,.article-content td{border:1px solid var(--c-line);padding:10px 14px;text-align:left;vertical-align:top;}
.article-content th{background:var(--c-alt);color:var(--c-heading);font-weight:600;}
.article-content hr{border:0;border-top:1px solid var(--c-line);margin:32px 0;}

.article-empty{
  padding:56px 24px;
  text-align:center;
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  background:var(--c-alt);
}
.article-empty i{font-size:34px;color:var(--c-primary);}
.article-empty h2{font-size:22px;margin:16px 0 8px;color:var(--c-heading);}
.article-empty p{margin-bottom:22px;color:var(--c-muted);}

/* tags */
.tag-list{display:flex;flex-wrap:wrap;gap:10px;margin-top:36px;padding-top:24px;border-top:1px solid var(--c-line);}
.tag-list .tag{
  font-size:13px;font-weight:600;color:var(--c-text);
  padding:6px 14px;border-radius:var(--r-pill);
  background:var(--c-alt);border:1px solid var(--c-line);
  transition:border-color .18s ease,color .18s ease,background-color .18s ease;
}
.tag-list .tag:hover{border-color:var(--c-primary);color:var(--c-primary);background:#fff;}

/* post nav */
.post-nav{
  display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:28px;
}
.post-nav__item{
  display:block;padding:18px 20px;
  border:1px solid var(--c-line);border-radius:var(--r-card);
  background:#fff;box-shadow:var(--sh-1);
  transition:border-color .18s ease,box-shadow .18s ease,transform .18s ease;
}
.post-nav__item:hover{border-color:#C9DCEF;box-shadow:var(--sh-2);transform:translateY(-2px);}
.post-nav__item span{display:block;font-size:12px;color:var(--c-muted);margin-bottom:6px;}
.post-nav__item strong{font-size:15px;color:var(--c-heading);}
.post-nav__item--next{text-align:right;}

/* ============ Aside ============ */
.aside-stack{display:flex;flex-direction:column;gap:22px;}
.side-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:22px;
}
.side-card h3{
  font-size:15px;font-weight:700;color:var(--c-heading);
  padding-bottom:12px;margin-bottom:14px;border-bottom:1px solid var(--c-line);
}
.side-sticky{position:sticky;top:150px;}
.toc-list li{margin-bottom:2px;}
.toc-list a{
  display:block;padding:9px 12px;font-size:14px;line-height:1.55;color:var(--c-text);
  border-left:3px solid transparent;border-radius:0 8px 8px 0;
  transition:color .18s ease,background-color .18s ease,border-color .18s ease;
}
.toc-list a:hover{color:var(--c-primary);background:var(--c-alt);}
.toc-list a.is-current{color:var(--c-primary);font-weight:600;background:var(--c-primary-light);border-left-color:var(--c-primary);}

.mini-list li+li{margin-top:14px;padding-top:14px;border-top:1px solid var(--c-line);}
.mini-list a{display:flex;gap:12px;align-items:flex-start;}
.mini-thumb{
  flex:0 0 80px;width:80px;height:60px;border-radius:8px;overflow:hidden;background:var(--c-img-bg);
}
.mini-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.mini-list a:hover img{transform:scale(1.03);}
.mini-title{font-size:14px;font-weight:600;line-height:1.5;color:var(--c-heading);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.mini-list a:hover .mini-title{color:var(--c-primary);}

/* ============ Related ============ */
.section{padding:80px 0;}
.section--alt{background:var(--c-alt);}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:34px;
}
.section-head h2{font-size:29px;font-weight:700;line-height:1.35;color:var(--c-heading);}
.section-head p{margin:8px 0 0;font-size:14px;color:var(--c-muted);}

.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.card{
  display:flex;flex-direction:column;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);overflow:hidden;
  transition:box-shadow .3s ease,border-color .3s ease,transform .3s ease;
}
.card:hover{box-shadow:var(--sh-2);border-color:#C9DCEF;transform:translateY(-3px);}
.card__media{position:relative;aspect-ratio:16/9;background:var(--c-img-bg);overflow:hidden;}
.card__media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.card:hover .card__media img{transform:scale(1.03);}
.card__media .badge{position:absolute;left:14px;top:14px;background:rgba(255,255,255,.94);}
.card__body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1 1 auto;}
.card__title{
  font-size:19px;font-weight:600;line-height:1.5;color:var(--c-heading);margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card:hover .card__title{color:var(--c-primary);}
.card__text{
  font-size:14px;line-height:1.8;color:var(--c-muted);margin-bottom:16px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.card__foot{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--c-muted);padding-top:14px;border-top:1px solid var(--c-line);
}
.card__foot .more{font-weight:600;color:var(--c-primary);}

/* ============ CTA ============ */
.cta-band{
  background:var(--c-primary-light);
  border-radius:var(--r-card);
  padding:34px 38px;
  display:flex;align-items:center;justify-content:space-between;gap:26px;
}
.cta-band h2{font-size:24px;font-weight:700;color:var(--c-heading);margin-bottom:6px;}
.cta-band p{margin:0;font-size:15px;color:#41556B;}

/* ============ FAQ ============ */
.faq-layout{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start;}
.faq-intro{position:sticky;top:150px;}
.faq-intro h2{font-size:29px;font-weight:700;line-height:1.35;color:var(--c-heading);margin-bottom:12px;}
.faq-intro p{font-size:15px;color:var(--c-muted);margin:0;}
.faq-item{border-top:1px solid var(--c-line);}
.faq-item:last-child{border-bottom:1px solid var(--c-line);}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  min-height:62px;padding:14px 0;
  font-size:17px;font-weight:600;color:var(--c-heading);
  transition:color .18s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--c-primary);}
.faq-item summary .ico{
  flex:0 0 26px;width:26px;height:26px;border-radius:50%;
  border:1px solid var(--c-line-strong);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;font-size:13px;
  transition:transform .26s ease,border-color .26s ease,background-color .26s ease;
}
.faq-item[open] summary{color:var(--c-primary);}
.faq-item[open] summary .ico{transform:rotate(45deg);border-color:var(--c-primary);background:var(--c-primary-light);}
.faq-item .answer{padding:0 0 20px;font-size:15px;line-height:1.85;color:var(--c-text);max-width:760px;}

/* ============ Footer ============ */
.site-footer{background:var(--c-heading);color:#B9C6D4;padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px;}
.footer-brand .logo-text{color:#fff;}
.footer-brand .logo-text small{color:#93A4B5;}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.85;color:#93A4B5;max-width:300px;}
.footer-col h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px;}
.footer-col li{margin-bottom:11px;}
.footer-col a{font-size:14px;color:#B9C6D4;}
.footer-col a:hover{color:#fff;}
.footer-col .plain{font-size:14px;color:#93A4B5;}
.footer-bottom{
  margin-top:48px;padding:20px 0;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;
  font-size:13px;color:#8B9BAB;
}
.footer-bottom a{color:#B9C6D4;}
.footer-bottom a:hover{color:#fff;}

/* ============ Responsive ============ */
@media (max-width:1199px){
  .article-grid{grid-template-columns:minmax(0,1fr) 290px;gap:36px;}
}
@media (max-width:991px){
  .article-grid{grid-template-columns:minmax(0,1fr);gap:36px;}
  .aside-stack{flex-direction:row;flex-wrap:wrap;}
  .aside-stack .side-card{flex:1 1 300px;}
  .side-sticky{position:static;}
  .article-head h1{font-size:32px;}
  .section{padding:64px 0;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .faq-layout{grid-template-columns:1fr;gap:28px;}
  .faq-intro{position:static;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .header-search{max-width:300px;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .brand-row{height:68px;gap:14px;}
  .logo-text{font-size:16px;}
  .logo-text small{display:none;}
  .header-search{display:none;}
  .header-actions .btn{display:none;}
  .nav-toggle{display:inline-flex;}
  .channel-scroll{height:50px;}
  .channel-link{height:40px;padding:0 14px;font-size:14px;}
  .channel-link.is-active::after{left:14px;right:14px;}
  .article-head{padding:20px 0 22px;}
  .article-head h1{font-size:28px;}
  .article-wrap{padding:28px 0 56px;}
  .article-content{font-size:16px;line-height:1.85;}
  .article-content h2{font-size:22px;margin-top:32px;}
  .article-content h3{font-size:18px;}
  .article-content table{display:block;overflow-x:auto;white-space:nowrap;}
  .post-nav{grid-template-columns:1fr;}
  .post-nav__item--next{text-align:left;}
  .section{padding:52px 0;}
  .section-head{flex-direction:column;align-items:flex-start;margin-bottom:26px;}
  .section-head h2{font-size:23px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:28px 22px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:575px){
  .container{padding:0 16px;}
  .card-grid{grid-template-columns:1fr;}
  .article-head h1{font-size:26px;}
  .crumbs .current{max-width:200px;}
  .aside-stack{flex-direction:column;}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .card:hover{transform:none;}
  .card:hover .card__media img{transform:none;}
  .post-nav__item:hover{transform:none;}
  .btn:hover{transform:none;}
}

/* roulang page: category1 */
:root{
  --brand:#1D5BA8;
  --brand-dark:#143F73;
  --brand-light:#E8F0FA;
  --accent:#E8892B;
  --green:#2E9E6B;
  --ink:#16202E;
  --text:#4A5A6B;
  --muted:#7A8A9A;
  --line:#E3E9F0;
  --line-strong:#C9DCEF;
  --alt:#F5F8FB;
  --white:#FFFFFF;
  --radius-card:14px;
  --radius-img:12px;
  --radius-btn:10px;
  --shadow-1:0 2px 8px rgba(22,32,46,.06);
  --shadow-2:0 10px 24px rgba(22,32,46,.10);
  --shadow-3:0 6px 18px rgba(22,32,46,.08);
  --font-cn:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC","Source Han Sans CN",Arial,Helvetica,sans-serif;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--white);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--ink);font-family:var(--font-cn);}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
img{display:block;max-width:100%;height:auto;}
a{color:var(--brand);text-decoration:none;transition:color .18s ease,border-color .18s ease;}
a:hover{color:var(--brand-dark);}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--brand);color:#fff;padding:10px 18px;border-radius:0 0 10px 0;z-index:200;}
.skip-link:focus{left:0;color:#fff;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;letter-spacing:.2px;
  border:1px solid transparent;background:transparent;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease,transform .18s ease;
  white-space:nowrap;
}
.btn--sm{height:38px;padding:0 16px;font-size:14px;}
.btn--primary{background:var(--brand);color:#fff;border-color:var(--brand);box-shadow:0 2px 6px rgba(29,91,168,.18);}
.btn--primary:hover{background:var(--brand-dark);border-color:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn--primary:active{background:var(--brand-dark);transform:translateY(1px);box-shadow:none;}
.btn--ghost{background:#fff;color:var(--ink);border-color:#D7E1EC;}
.btn--ghost:hover{color:var(--brand);border-color:var(--brand);background:#fff;}
.btn--ghost:active{transform:translateY(1px);}
.btn[disabled],.btn.is-disabled{opacity:.5;pointer-events:none;}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand);position:relative;padding-bottom:2px;}
.text-link::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:100%;background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform .22s ease;}
.text-link:hover::after{transform:scaleX(1);}

/* ============ 头部 ============ */
.site-header{position:sticky;top:0;z-index:80;background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--shadow-3);}
.brand-row{display:flex;align-items:center;gap:20px;min-height:78px;}
.logo{display:inline-flex;align-items:center;gap:12px;color:var(--brand-dark);flex:0 0 auto;}
.logo-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:12px;
  background:linear-gradient(135deg,var(--brand),var(--brand-dark));
  color:#fff;font-size:15px;font-weight:800;letter-spacing:.5px;
}
.logo-text{display:flex;flex-direction:column;font-size:19px;font-weight:800;line-height:1.25;letter-spacing:-.3px;color:var(--brand-dark);}
.logo-text small{font-size:12px;font-weight:500;color:var(--muted);letter-spacing:0;margin-top:3px;}
.header-search{position:relative;display:flex;align-items:center;flex:1 1 300px;max-width:360px;margin-left:auto;}
.header-search input{
  width:100%;height:40px;border:1px solid #D7E1EC;border-radius:var(--radius-btn);
  background:#FBFCFE;padding:0 44px 0 14px;font-size:14px;color:var(--ink);
  transition:border-color .18s ease,box-shadow .18s ease,background-color .18s ease;
}
.header-search input::placeholder{color:var(--muted);}
.header-search input:focus{outline:none;background:#fff;border-color:var(--brand);box-shadow:0 0 0 3px rgba(29,91,168,.15);}
.header-search button{
  position:absolute;right:4px;top:4px;width:32px;height:32px;border:0;background:transparent;
  color:var(--muted);border-radius:8px;display:inline-flex;align-items:center;justify-content:center;
}
.header-search button:hover{color:var(--brand);background:var(--brand-light);}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:var(--radius-btn);background:#fff;color:var(--ink);align-items:center;justify-content:center;}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand);}

.channel-row{background:#fff;border-top:1px solid var(--line);}
.channel-scroll{display:flex;align-items:center;gap:4px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;}
.channel-scroll::-webkit-scrollbar{display:none;}
.channel-link{
  display:inline-flex;align-items:center;height:48px;padding:0 18px;
  font-size:15px;font-weight:600;color:var(--text);white-space:nowrap;
  border-bottom:3px solid transparent;transition:color .18s ease,border-color .18s ease,background-color .18s ease;
}
.channel-link:hover{color:var(--brand);background:#FBFCFE;}
.channel-link.is-active{color:var(--brand);border-bottom-color:var(--accent);}
.nav-scrim{position:fixed;inset:0;background:rgba(22,32,46,.42);opacity:0;visibility:hidden;transition:opacity .22s ease,visibility .22s ease;z-index:70;border:0;padding:0;}
.site-header.is-open .nav-scrim{opacity:1;visibility:visible;}

/* ============ 面包屑 ============ */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:16px 0;font-size:13px;color:var(--muted);}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{color:#C3CFDB;}
.breadcrumb .current{color:var(--brand);font-weight:600;}

/* ============ 频道横幅 ============ */
.channel-hero{
  position:relative;
  background-image:
    linear-gradient(90deg,rgba(255,255,255,.95) 0%,rgba(255,255,255,.82) 44%,rgba(255,255,255,.28) 100%),
    linear-gradient(0deg,rgba(29,91,168,.22),rgba(29,91,168,.22)),
    url('/assets/images/backpic/back-1.png');
  background-size:cover,cover,cover;
  background-position:center,center,center;
  border-bottom:1px solid var(--line);
}
.channel-hero__inner{min-height:248px;display:flex;flex-direction:column;justify-content:center;padding:40px 0 44px;max-width:780px;}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;align-self:flex-start;
  background:#fff;border:1px solid var(--line-strong);color:var(--brand);
  font-size:13px;font-weight:600;padding:5px 14px;border-radius:999px;margin-bottom:16px;
}
.hero-eyebrow i{color:var(--accent);}
.channel-hero h1{font-size:38px;font-weight:800;line-height:1.3;letter-spacing:-.5px;color:var(--ink);}
.hero-lead{margin-top:14px;font-size:17px;line-height:1.75;color:var(--text);max-width:640px;}

/* ============ 频道标签条 ============ */
.subnav{padding:24px 0 6px;display:flex;flex-wrap:wrap;gap:10px;align-items:center;}
.chip{
  display:inline-flex;align-items:center;height:36px;padding:0 16px;border-radius:999px;
  border:1px solid var(--line);background:#fff;color:var(--text);font-size:14px;font-weight:600;
  transition:color .18s ease,border-color .18s ease,background-color .18s ease;
}
.chip:hover{color:var(--brand);border-color:var(--line-strong);}
.chip.is-current{background:var(--brand-light);color:var(--brand);border-color:var(--line-strong);}

/* ============ 通用板块 ============ */
.section{padding:92px 0;}
.section--alt{background:var(--alt);}
.section--tight{padding-top:64px;}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:40px;}
.section-head h2{font-size:29px;font-weight:700;line-height:1.35;letter-spacing:-.4px;}
.section-head p{margin-top:10px;font-size:15px;color:var(--muted);max-width:660px;}
.eyebrow{display:flex;align-items:center;gap:8px;font-size:13px;font-weight:700;letter-spacing:1px;color:var(--brand);text-transform:uppercase;margin-bottom:12px;}
.eyebrow::before{content:"";width:22px;height:3px;border-radius:2px;background:var(--accent);}

/* ============ 卡片栅格 ============ */
.grid-x.masonry{margin-bottom:-24px;}
.grid-x.masonry > .cell{margin-bottom:24px;}
.info-card{
  display:flex;flex-direction:column;height:100%;background:#fff;
  border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:box-shadow .22s ease,border-color .22s ease,transform .22s ease;
}
.info-card:hover{box-shadow:var(--shadow-2);border-color:var(--line-strong);transform:translateY(-2px);}
.info-card__media{position:relative;display:block;aspect-ratio:16/9;overflow:hidden;background:#E9EFF6;}
.info-card__media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.info-card:hover .info-card__media img{transform:scale(1.03);}
.tag{
  position:absolute;left:12px;top:12px;display:inline-flex;align-items:center;
  background:rgba(232,240,250,.94);color:var(--brand);font-size:12px;font-weight:700;
  padding:4px 12px;border-radius:999px;letter-spacing:.2px;
}
.tag--hot{background:#fff;border:1px solid var(--accent);color:#B9660F;}
.info-card__body{display:flex;flex-direction:column;gap:10px;padding:20px 22px 22px;flex:1;}
.info-card__title{font-size:18px;font-weight:600;line-height:1.5;color:var(--ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.info-card__title a{color:inherit;}
.info-card:hover .info-card__title a{color:var(--brand);}
.info-card__desc{margin:0;font-size:14px;line-height:1.8;color:var(--text);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.info-card__meta{margin-top:auto;display:flex;align-items:center;gap:8px;padding-top:14px;border-top:1px solid var(--line);font-size:13px;color:var(--muted);}
.info-card__meta .dot{color:#C3CFDB;}
.info-card__meta .text-link{margin-left:auto;}

/* ============ 信息方向 ============ */
.direction-aside{position:sticky;top:110px;}
.direction-aside h2{font-size:28px;font-weight:700;line-height:1.4;letter-spacing:-.4px;}
.direction-aside p{margin-top:14px;font-size:15px;line-height:1.85;color:var(--text);}
.direction-list{border-top:1px solid var(--line);}
.direction-item{
  display:flex;gap:20px;padding:22px 6px;border-bottom:1px solid var(--line);
  border-left:3px solid transparent;transition:background-color .18s ease,border-color .18s ease;
}
.direction-item:hover{background:#fff;border-left-color:var(--accent);}
.direction-item .idx{
  flex:0 0 auto;width:44px;height:44px;border-radius:12px;background:var(--brand-light);color:var(--brand);
  display:inline-flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;font-variant-numeric:tabular-nums;
}
.direction-item h3{font-size:18px;font-weight:600;line-height:1.5;}
.direction-item p{margin-top:8px;font-size:14px;line-height:1.8;color:var(--text);}

/* ============ 流程 ============ */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;}
.step{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:26px 24px;box-shadow:var(--shadow-1);transition:box-shadow .22s ease,border-color .22s ease;}
.step:hover{box-shadow:var(--shadow-2);border-color:var(--line-strong);}
.step__num{font-size:42px;font-weight:700;line-height:1;color:var(--brand);font-variant-numeric:tabular-nums;letter-spacing:-1px;}
.step__num span{display:block;width:34px;height:3px;background:var(--accent);border-radius:2px;margin:12px 0 16px;}
.step h3{font-size:17px;font-weight:600;line-height:1.5;}
.step p{margin-top:8px;font-size:14px;line-height:1.8;color:var(--text);}

/* ============ FAQ ============ */
.faq-aside h2{font-size:28px;font-weight:700;line-height:1.4;letter-spacing:-.4px;}
.faq-aside p{margin-top:14px;font-size:15px;line-height:1.85;color:var(--text);}
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  min-height:64px;padding:16px 4px;font-size:17px;font-weight:600;color:var(--ink);
  cursor:pointer;list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";flex:0 0 auto;font-size:22px;font-weight:400;color:var(--muted);
  transition:transform .22s ease,color .22s ease;line-height:1;
}
.faq-item[open] summary{color:var(--brand);}
.faq-item[open] summary::after{transform:rotate(45deg);color:var(--brand);}
.faq-item .answer{padding:0 4px 22px;font-size:15px;line-height:1.85;color:var(--text);max-width:760px;}

/* ============ CTA ============ */
.cta-band{
  background:var(--brand-light);border-radius:var(--radius-card);
  padding:32px 36px;display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
}
.cta-band h2{font-size:24px;font-weight:700;line-height:1.45;color:var(--brand-dark);}
.cta-band p{margin-top:8px;font-size:15px;color:var(--text);}
.cta-band .cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ============ 页脚 ============ */
.site-footer{background:#16202E;color:#C4D0DC;padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:32px;}
.footer-brand .logo{color:#fff;}
.footer-brand .logo-text{color:#fff;font-size:18px;}
.footer-brand .logo-text small{display:none;}
.footer-brand .logo-mark{background:linear-gradient(135deg,#2A6FBF,#143F73);}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.85;color:#9FB0C0;max-width:320px;}
.footer-col h4{color:#fff;font-size:15px;font-weight:700;letter-spacing:.4px;margin-bottom:16px;}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul li a{color:#C4D0DC;font-size:14px;display:inline-block;transition:color .18s ease,transform .18s ease;}
.footer-col ul li a:hover{color:#fff;transform:translateX(2px);}
.footer-col .plain{color:#9FB0C0;font-size:14px;line-height:1.7;display:block;}
.footer-bottom{
  margin-top:48px;border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0 26px;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:#8FA0B1;
}
.footer-bottom a{color:#B9C6D4;}
.footer-bottom a:hover{color:#fff;}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .channel-hero h1{font-size:34px;}
  .section{padding:84px 0;}
}
@media (max-width:991px){
  .section{padding:64px 0;}
  .channel-hero__inner{min-height:224px;padding:34px 0 38px;}
  .channel-hero h1{font-size:30px;}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));}
  .direction-aside{position:static;margin-bottom:28px;}
  .faq-aside{position:static;margin-bottom:28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .brand-row{min-height:66px;gap:12px;}
  .logo-text{font-size:16px;}
  .logo-text small{display:none;}
  .logo-mark{width:38px;height:38px;font-size:14px;}
  .header-search{display:none;}
  .header-actions .btn{display:none;}
  .nav-toggle{display:inline-flex;}
  .channel-row{
    position:fixed;top:0;right:0;bottom:0;width:288px;max-width:84vw;
    background:#fff;border-left:1px solid var(--line);box-shadow:var(--shadow-2);
    transform:translateX(100%);transition:transform .24s ease;overflow-y:auto;z-index:80;padding-top:12px;
  }
  .site-header.is-open .channel-row{transform:translateX(0);}
  .channel-row .container{padding:0;max-width:none;}
  .channel-scroll{flex-direction:column;align-items:stretch;gap:0;overflow:visible;}
  .channel-link{
    height:54px;width:100%;padding:0 22px;border-bottom:1px solid var(--line);
    border-left:3px solid transparent;border-radius:0;justify-content:flex-start;
  }
  .channel-link.is-active{background:var(--brand-light);border-left-color:var(--brand);border-bottom-color:var(--line);}
  .section{padding:52px 0;}
  .section-head{margin-bottom:28px;}
  .section-head h2{font-size:24px;}
  .channel-hero h1{font-size:26px;}
  .hero-lead{font-size:16px;}
  .channel-hero__inner{min-height:200px;padding:28px 0 32px;}
  .cta-band{padding:26px 22px;flex-direction:column;align-items:flex-start;}
  .cta-band .cta-actions{width:100%;}
  .cta-band .cta-actions .btn{flex:1 1 auto;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .info-card__title{font-size:17px;}
}
@media (max-width:575px){
  .steps{grid-template-columns:1fr;}
  .step__num{font-size:38px;}
  .chip{font-size:13px;padding:0 14px;height:34px;}
  .subnav{padding-top:18px;}
  .breadcrumb{font-size:12px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
  .info-card:hover{transform:none;}
  .info-card:hover .info-card__media img{transform:none;}
  .btn--primary:hover{transform:none;}
}

/* roulang page: category2 */
:root{
  --brand:#1D5BA8;
  --brand-dark:#143F73;
  --brand-light:#E8F0FA;
  --accent:#E8892B;
  --green:#2E9E6B;
  --ink:#16202E;
  --text:#4A5A6B;
  --muted:#7A8A9A;
  --line:#E3E9F0;
  --alt:#F5F8FB;
  --white:#FFFFFF;
  --radius-card:14px;
  --radius-img:12px;
  --radius-btn:10px;
  --shadow-1:0 2px 8px rgba(22,32,46,.06);
  --shadow-2:0 10px 24px rgba(22,32,46,.10);
  --shadow-3:0 6px 18px rgba(22,32,46,.08);
  --font-cn:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",Arial,Helvetica,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--white);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--brand-dark);}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
h1,h2,h3,h4,h5{color:var(--ink);margin:0;font-weight:700;}
h1{font-size:38px;font-weight:800;line-height:1.3;letter-spacing:-.5px;}
h2{font-size:29px;font-weight:700;line-height:1.35;}
h3{font-size:20px;font-weight:600;line-height:1.5;}
h4{font-size:17px;font-weight:600;line-height:1.5;}
p{margin:0 0 16px;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
.show-for-sr{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:46px;
  padding:0 22px;
  border-radius:var(--radius-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1;
  cursor:pointer;
  transition:all .18s ease;
  text-align:center;
}
.btn--sm{min-height:40px;padding:0 16px;font-size:14px;}
.btn--primary{background:var(--brand);color:#fff;}
.btn--primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-3);}
.btn--primary:active{transform:translateY(1px);box-shadow:none;}
.btn--ghost{background:#fff;color:var(--ink);border-color:#D7E1EC;}
.btn--ghost:hover{border-color:var(--brand);color:var(--brand);background:#fff;}
.btn--ghost:active{transform:translateY(1px);}
.btn--link{
  min-height:auto;padding:0;background:none;border:none;color:var(--brand);
  font-weight:600;position:relative;
}
.btn--link::after{
  content:"";position:absolute;left:0;bottom:-3px;height:2px;width:0;background:var(--brand);
  transition:width .22s ease;
}
.btn--link:hover::after{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none;}

/* ============ 头部 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:#fff;
  border-bottom:1px solid var(--line);
}
.brand-row{
  display:flex;
  align-items:center;
  gap:24px;
  min-height:76px;
  padding:12px 0;
}
.logo{display:flex;align-items:center;gap:12px;color:var(--ink);flex-shrink:0;}
.logo:hover{color:var(--brand-dark);}
.logo-mark{
  width:42px;height:42px;border-radius:12px;
  background:linear-gradient(135deg,var(--brand) 0%,var(--brand-dark) 100%);
  color:#fff;font-weight:800;font-size:16px;letter-spacing:.5px;
  display:flex;align-items:center;justify-content:center;
}
.logo-text{
  font-size:19px;font-weight:800;color:var(--brand-dark);line-height:1.25;
  display:flex;flex-direction:column;
}
.logo-text small{
  font-size:12px;font-weight:500;color:var(--muted);letter-spacing:.3px;
}
.header-search{
  flex:1;
  max-width:380px;
  display:flex;
  align-items:center;
  background:#fff;
  border:1px solid #D7E1EC;
  border-radius:var(--radius-btn);
  height:40px;
  overflow:hidden;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.header-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(29,91,168,.14);}
.header-search input{
  flex:1;height:100%;border:none;background:transparent;padding:0 14px;font-size:14px;outline:none;
}
.header-search input::placeholder{color:var(--muted);}
.header-search button{
  width:46px;height:100%;border:none;background:transparent;color:var(--brand);cursor:pointer;
  transition:background .18s ease;
}
.header-search button:hover{background:var(--brand-light);}
.header-actions{display:flex;align-items:center;gap:10px;margin-left:auto;}
.nav-toggle{
  display:none;
  width:44px;height:44px;border:1px solid #D7E1EC;border-radius:var(--radius-btn);
  background:#fff;color:var(--ink);cursor:pointer;
}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand);}

/* ============ 频道行 ============ */
.channel-row{
  background:#fff;
  border-top:1px solid var(--line);
}
.channel-scroll{
  display:flex;
  align-items:center;
  gap:6px;
  overflow-x:auto;
  scrollbar-width:none;
  -ms-overflow-style:none;
}
.channel-scroll::-webkit-scrollbar{display:none;}
.channel-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:44px;
  padding:0 18px;
  white-space:nowrap;
  font-size:15px;
  font-weight:600;
  color:var(--text);
  transition:color .18s ease;
}
.channel-link:hover{color:var(--brand);}
.channel-link.is-active{color:var(--brand);}
.channel-link.is-active::after{
  content:"";position:absolute;left:18px;right:18px;bottom:0;height:3px;
  background:var(--accent);border-radius:3px 3px 0 0;
}
.nav-backdrop{
  display:none;
  position:fixed;inset:0;background:rgba(22,32,46,.42);z-index:70;
}
.nav-backdrop.is-open{display:block;}

/* ============ 面包屑 ============ */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  padding:16px 0;
  font-size:13px;
  color:var(--muted);
}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{color:#C4CFDA;}
.breadcrumb .current{color:var(--brand);font-weight:600;}

/* ============ 横幅 ============ */
.page-hero{
  position:relative;
  min-height:250px;
  display:flex;
  align-items:center;
  background-image:url("/assets/images/backpic/back-1.png");
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.page-hero::before{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(20,63,115,.24) 0%,rgba(29,91,168,.20) 100%);
}
.page-hero .container{position:relative;z-index:1;padding-top:44px;padding-bottom:44px;}
.page-hero .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.92);
  color:var(--brand-dark);
  font-size:13px;font-weight:600;
  padding:5px 12px;border-radius:999px;margin-bottom:14px;
}
.page-hero h1{
  color:#fff;
  text-shadow:0 2px 12px rgba(20,63,115,.42);
  max-width:860px;
}
.page-hero p{
  color:rgba(255,255,255,.94);
  font-size:17px;
  max-width:720px;
  margin:14px 0 0;
  text-shadow:0 1px 8px rgba(20,63,115,.38);
}
.channel-strip{
  background:var(--alt);
  border-bottom:1px solid var(--line);
}
.channel-strip .strip-inner{
  display:flex;flex-wrap:wrap;gap:10px;padding:14px 0;
}
.strip-tag{
  display:inline-flex;align-items:center;
  padding:7px 15px;border-radius:999px;
  background:#fff;border:1px solid var(--line);
  font-size:13px;font-weight:600;color:var(--text);
  transition:all .18s ease;
}
.strip-tag:hover{border-color:var(--brand);color:var(--brand);}
.strip-tag.is-current{background:var(--brand);border-color:var(--brand);color:#fff;}

/* ============ 通用板块 ============ */
.section{padding:96px 0;}
.section--tight{padding:72px 0;}
.section--alt{background:var(--alt);}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head .kicker{
  display:block;font-size:13px;font-weight:700;letter-spacing:1.4px;
  color:var(--accent);text-transform:uppercase;margin-bottom:10px;
}
.section-head h2{margin-bottom:12px;}
.section-head p{margin:0;color:var(--muted);font-size:16px;}
.section-head--row{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;max-width:none;
}

/* ============ 服务卡片栅格 ============ */
.service-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.card{
  display:flex;flex-direction:column;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);
  overflow:hidden;
  transition:box-shadow .22s ease,border-color .22s ease,transform .22s ease;
}
.card:hover{box-shadow:var(--shadow-2);border-color:#C9DCEF;transform:translateY(-2px);}
.card-media{
  position:relative;
  aspect-ratio:16/9;
  background:#E9EFF6;
  overflow:hidden;
}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.card:hover .card-media img{transform:scale(1.03);}
.card-body{padding:22px 22px 20px;display:flex;flex-direction:column;flex:1;}
.badge{
  display:inline-flex;align-items:center;
  padding:4px 10px;border-radius:999px;
  background:var(--brand-light);color:var(--brand);
  font-size:12px;font-weight:600;letter-spacing:.2px;
}
.badge--accent{background:#FDF1E3;color:#B4661A;border:1px solid #F3D6B0;}
.card-body h3{
  margin:12px 0 8px;
  font-size:19px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .18s ease;
}
.card:hover .card-body h3{color:var(--brand);}
.card-body .card-desc{
  font-size:14.5px;line-height:1.75;color:var(--text);margin:0 0 16px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.card-foot{
  margin-top:auto;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding-top:14px;border-top:1px solid var(--line);
  font-size:13px;color:var(--muted);
}
.card-foot .more{font-weight:600;color:var(--brand);font-size:13.5px;}
.card-foot .more i{margin-left:4px;transition:transform .18s ease;}
.card:hover .card-foot .more i{transform:translateX(3px);}

/* ============ 组合方式（左 sticky + 右列表） ============ */
.combo-wrap{
  display:grid;
  grid-template-columns:minmax(0,4fr) minmax(0,8fr);
  gap:48px;
  align-items:start;
}
.combo-intro{position:sticky;top:120px;}
.combo-intro h2{margin-bottom:14px;}
.combo-intro p{color:var(--muted);font-size:15.5px;}
.combo-list{border-top:1px solid var(--line);}
.combo-item{
  display:flex;align-items:flex-start;gap:20px;
  padding:24px 18px;
  border-bottom:1px solid var(--line);
  transition:background .18s ease;
}
.combo-item:hover{background:var(--brand-light);}
.combo-num{
  flex-shrink:0;
  font-size:22px;font-weight:700;color:var(--brand);
  font-variant-numeric:tabular-nums;line-height:1.2;
  min-width:44px;
}
.combo-main{flex:1;}
.combo-main h3{font-size:18px;margin-bottom:6px;}
.combo-main p{margin:0;font-size:14.5px;color:var(--text);}
.combo-arrow{color:#C4CFDA;font-size:15px;padding-top:4px;transition:color .18s ease,transform .18s ease;}
.combo-item:hover .combo-arrow{color:var(--brand);transform:translateX(3px);}

/* ============ 流程 ============ */
.flow-grid{
  display:grid;
  grid-template-columns:repeat(5,minmax(0,1fr));
  gap:20px;
  counter-reset:flow;
}
.flow-step{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:26px 20px 22px;
  box-shadow:var(--shadow-1);
  position:relative;
  transition:box-shadow .22s ease,border-color .22s ease;
}
.flow-step:hover{box-shadow:var(--shadow-2);border-color:#C9DCEF;}
.flow-step .step-idx{
  display:inline-flex;align-items:center;justify-content:center;
  width:36px;height:36px;border-radius:999px;
  background:var(--brand-light);color:var(--brand);
  font-weight:700;font-size:15px;margin-bottom:14px;
  font-variant-numeric:tabular-nums;
}
.flow-step h3{font-size:17px;margin-bottom:8px;}
.flow-step p{margin:0;font-size:14px;color:var(--text);}

/* ============ 数据条 ============ */
.stat-strip{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  gap:0;
}
.stat-item{
  padding:8px 24px;
  border-left:1px solid var(--line);
}
.stat-item:first-child{border-left:none;padding-left:0;}
.stat-num{
  font-size:42px;font-weight:700;color:var(--brand-dark);
  line-height:1.15;font-variant-numeric:tabular-nums;
  letter-spacing:-1px;
}
.stat-num span{font-size:20px;font-weight:600;color:var(--brand);margin-left:2px;}
.stat-label{font-size:14px;color:var(--muted);margin-top:6px;}

/* ============ CTA 通栏 ============ */
.cta-band{
  background:var(--brand-light);
  border-radius:var(--radius-card);
  padding:36px 40px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;
}
.cta-band h2{font-size:24px;margin-bottom:8px;}
.cta-band p{margin:0;color:var(--text);font-size:15px;}
.cta-band .cta-actions{display:flex;gap:12px;flex-shrink:0;}

/* ============ FAQ ============ */
.faq-wrap{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,8fr);gap:48px;align-items:start;}
.faq-intro{position:sticky;top:120px;}
.faq-intro h2{margin-bottom:12px;}
.faq-intro p{color:var(--muted);font-size:15.5px;margin:0;}
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  min-height:64px;padding:14px 4px;
  font-size:17px;font-weight:600;color:var(--ink);
  transition:color .18s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--brand);}
.faq-icon{
  flex-shrink:0;width:26px;height:26px;border-radius:999px;
  background:var(--brand-light);color:var(--brand);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:13px;transition:transform .22s ease,background .22s ease,color .22s ease;
}
.faq-item[open] .faq-icon{transform:rotate(45deg);background:var(--brand);color:#fff;}
.faq-answer{padding:0 4px 20px;font-size:15px;line-height:1.8;color:var(--text);}

/* ============ 页脚 ============ */
.site-footer{
  background:#16202E;
  color:#B9C4D0;
  padding:64px 0 0;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:32px;
  padding-bottom:40px;
  border-bottom:1px solid rgba(255,255,255,.10);
}
.footer-brand .logo{color:#fff;margin-bottom:16px;}
.footer-brand .logo-text{color:#fff;}
.footer-brand .logo-text small{color:#8E9AA8;}
.footer-brand p{font-size:14px;line-height:1.8;color:#96A3B2;margin:0;}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:600;}
.footer-col ul li{margin-bottom:10px;font-size:14px;}
.footer-col a{color:#B9C4D0;}
.footer-col a:hover{color:#fff;}
.footer-col .plain{color:#8E9AA8;font-size:13.5px;line-height:1.7;}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 0 26px;
  font-size:13px;color:#8E9AA8;
  flex-wrap:wrap;
}
.footer-bottom a{color:#B9C4D0;text-decoration:underline;}
.footer-bottom a:hover{color:#fff;}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  h1{font-size:34px;}
  .section{padding:84px 0;}
  .service-grid{gap:20px;}
}
@media (max-width:991px){
  h1{font-size:30px;}
  h2{font-size:25px;}
  .section{padding:64px 0;}
  .container{padding-left:20px;padding-right:20px;}
  .header-search{max-width:280px;}
  .service-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .combo-wrap{grid-template-columns:1fr;gap:28px;}
  .combo-intro{position:static;}
  .flow-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .stat-strip{grid-template-columns:repeat(2,minmax(0,1fr));row-gap:28px;}
  .stat-item:nth-child(3){border-left:none;padding-left:0;}
  .faq-wrap{grid-template-columns:1fr;gap:24px;}
  .faq-intro{position:static;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:30px 28px;}
}
@media (max-width:767px){
  .header-search{display:none;}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;}
  .channel-row{
    position:fixed;
    top:0;right:0;bottom:0;
    width:min(84vw,320px);
    background:#fff;
    transform:translateX(100%);
    transition:transform .26s ease;
    box-shadow:-6px 0 24px rgba(22,32,46,.14);
    overflow-y:auto;
    z-index:75;
    border-top:none;
    padding-top:84px;
  }
  .channel-row.is-open{transform:translateX(0);}
  .channel-row .container{padding:0;width:100%;max-width:none;}
  .channel-scroll{flex-direction:column;align-items:stretch;gap:0;overflow:visible;padding-bottom:24px;}
  .channel-link{
    height:auto;min-height:52px;padding:14px 20px;
    border-bottom:1px solid var(--line);
    border-left:3px solid transparent;
    justify-content:flex-start;
  }
  .channel-link.is-active{border-left-color:var(--brand);background:var(--brand-light);}
  .channel-link.is-active::after{display:none;}
  .page-hero{min-height:220px;}
  .page-hero .container{padding-top:32px;padding-bottom:32px;}
  .page-hero p{font-size:15.5px;}
  .section{padding:52px 0;}
  .service-grid{grid-template-columns:1fr;}
  .flow-grid{grid-template-columns:1fr;}
  .stat-strip{grid-template-columns:repeat(2,minmax(0,1fr));}
  .stat-num{font-size:34px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .combo-item{padding:20px 12px;gap:14px;}
  .cta-band{padding:26px 22px;}
  .cta-band .cta-actions{width:100%;flex-direction:column;}
  .cta-band .cta-actions .btn{width:100%;}
}
@media (max-width:575px){
  h1{font-size:26px;}
  h2{font-size:22px;}
  .container{padding-left:16px;padding-right:16px;}
  .logo-text{font-size:16px;}
  .logo-text small{font-size:11px;}
  .stat-item{padding:8px 14px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important;}
  .card:hover{transform:none;}
  .card:hover .card-media img{transform:none;}
  .btn:hover{transform:none;}
}

/* roulang page: category3 */
/* ===== 设计变量 ===== */
:root{
  --brand:#1D5BA8;
  --brand-dark:#143F73;
  --brand-light:#E8F0FA;
  --accent:#E8892B;
  --green:#2E9E6B;
  --head:#16202E;
  --text:#4A5A6B;
  --muted:#7A8A9A;
  --line:#E3E9F0;
  --alt:#F5F8FB;
  --white:#FFFFFF;
  --img-bg:#E9EFF6;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --sh-1:0 2px 8px rgba(22,32,46,.06);
  --sh-2:0 10px 24px rgba(22,32,46,.10);
  --sh-3:0 6px 18px rgba(22,32,46,.08);
  --font:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC","Helvetica Neue",Arial,Helvetica,sans-serif;
}

/* ===== 基础 reset ===== */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--white);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5,h6,p,ul,ol,li,dl,dt,dd,figure{margin:0;}
h1,h2,h3,h4{color:var(--head);font-family:var(--font);}
h1{font-size:38px;font-weight:800;line-height:1.3;letter-spacing:-0.5px;}
h2{font-size:29px;font-weight:700;line-height:1.35;letter-spacing:-0.3px;}
h3{font-size:20px;font-weight:600;line-height:1.5;}
h4{font-size:17px;font-weight:600;line-height:1.5;}
p{font-size:16px;line-height:1.85;color:var(--text);}
img{max-width:100%;display:block;height:auto;}
a{color:var(--brand);text-decoration:none;transition:color .18s ease,border-color .18s ease,background-color .18s ease;}
a:hover{color:var(--brand-dark);}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
button{cursor:pointer;}
ul{list-style:none;padding:0;}
summary{list-style:none;}
summary::-webkit-details-marker{display:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}

/* ===== 容器 ===== */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:88px 0;}
.section--alt{background:var(--alt);}
.section-head{max-width:760px;margin-bottom:36px;}
.section-head h2{margin-bottom:12px;}
.section-head p{color:var(--muted);font-size:15.5px;}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
  white-space:nowrap;
}
.btn--primary{background:var(--brand);color:#fff;}
.btn--primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-1);}
.btn--primary:active{transform:translateY(1px);box-shadow:none;}
.btn--ghost{background:#fff;border-color:#D7E1EC;color:var(--head);}
.btn--ghost:hover{border-color:var(--brand);color:var(--brand);}
.btn--ghost:active{transform:translateY(1px);}
.btn--sm{height:38px;padding:0 16px;font-size:14px;border-radius:var(--r-btn);}
.btn--lg{height:50px;padding:0 30px;font-size:16px;}
.btn[disabled]{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none;}

.link-more{
  position:relative;display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--brand);
}
.link-more::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--brand);
  transform:scaleX(0);transform-origin:left;transition:transform .2s ease;
}
.link-more:hover::after{transform:scaleX(1);}

/* ===== 徽章 ===== */
.badge{
  display:inline-flex;align-items:center;padding:4px 10px;border-radius:999px;
  font-size:12px;font-weight:600;background:var(--brand-light);color:var(--brand);
}
.badge--hot{background:#FDF1E4;color:#B96A15;border:1px solid #F3D3AE;}
.badge--plain{background:var(--alt);color:var(--muted);}

/* ===== 头部 ===== */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--sh-3);}
.brand-row{display:flex;align-items:center;gap:24px;padding:14px 0;}
.logo{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.logo-mark{
  width:44px;height:44px;border-radius:12px;flex:0 0 auto;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--brand) 0%,var(--brand-dark) 100%);
  color:#fff;font-size:16px;font-weight:800;letter-spacing:.5px;
}
.logo-text{display:flex;flex-direction:column;font-size:19px;font-weight:800;color:var(--brand-dark);line-height:1.25;letter-spacing:-0.3px;}
.logo-text small{font-size:12px;font-weight:500;color:var(--muted);letter-spacing:0;margin-top:2px;}
.header-search{
  position:relative;display:flex;align-items:center;gap:6px;
  flex:1 1 auto;max-width:420px;height:40px;padding:0 6px 0 14px;
  background:var(--alt);border:1px solid var(--line);border-radius:var(--r-btn);
  transition:border-color .18s ease,box-shadow .18s ease;
}
.header-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(29,91,168,.14);}
.header-search input{flex:1 1 auto;min-width:0;height:38px;border:0;background:transparent;outline:none;font-size:14px;color:var(--head);}
.header-search input::placeholder{color:#9AA8B6;}
.header-search button{
  width:34px;height:30px;flex:0 0 auto;border:0;border-radius:8px;
  background:var(--brand);color:#fff;font-size:13px;display:flex;align-items:center;justify-content:center;
  transition:background-color .18s ease;
}
.header-search button:hover{background:var(--brand-dark);}
.header-actions{display:flex;align-items:center;gap:10px;margin-left:auto;}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:var(--r-btn);
  background:#fff;color:var(--brand-dark);font-size:17px;
  align-items:center;justify-content:center;
}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand);}

/* 频道行 */
.channel-row{background:#fff;border-top:1px solid var(--line);}
.channel-scroll{display:flex;align-items:center;gap:4px;overflow-x:auto;scrollbar-width:none;}
.channel-scroll::-webkit-scrollbar{display:none;}
.channel-link{
  position:relative;display:inline-flex;align-items:center;height:44px;padding:0 18px;
  font-size:15px;font-weight:500;color:#41505F;white-space:nowrap;border-radius:8px 8px 0 0;
}
.channel-link::after{
  content:"";position:absolute;left:18px;right:18px;bottom:4px;height:3px;border-radius:2px;
  background:transparent;transition:background-color .18s ease;
}
.channel-link:hover{color:var(--brand);background:var(--alt);}
.channel-link.is-active{color:var(--brand);font-weight:700;}
.channel-link.is-active::after{background:var(--accent);}

/* ===== 页头横幅 ===== */
.banner{
  position:relative;min-height:250px;display:flex;align-items:center;overflow:hidden;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
}
.banner::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(255,255,255,.94) 0%,rgba(245,248,251,.86) 52%,rgba(232,240,250,.78) 100%);
}
.banner::after{content:"";position:absolute;inset:0;background:rgba(29,91,168,.18);}
.banner .container{position:relative;z-index:2;padding-top:46px;padding-bottom:46px;}
.banner-tag{
  display:inline-flex;align-items:center;gap:8px;margin-bottom:14px;
  padding:4px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);
  font-size:13px;font-weight:600;color:var(--brand);
}
.banner h1{max-width:900px;margin-bottom:12px;}
.banner-sub{max-width:720px;font-size:16.5px;color:#3F4E5E;line-height:1.8;}

/* ===== 面包屑 ===== */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);padding:16px 0;}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{color:#C3CEDA;}
.breadcrumb .current{color:var(--brand);font-weight:600;}

/* ===== 频道标签条 ===== */
.channel-tabs{
  display:flex;align-items:center;gap:10px;overflow-x:auto;scrollbar-width:none;
  padding:6px 0 20px;border-bottom:1px solid var(--line);margin-bottom:0;
}
.channel-tabs::-webkit-scrollbar{display:none;}
.tab{
  display:inline-flex;align-items:center;height:38px;padding:0 16px;border-radius:999px;
  border:1px solid var(--line);background:#fff;font-size:14px;font-weight:500;color:#41505F;
  white-space:nowrap;transition:all .18s ease;
}
.tab:hover{border-color:#C9DCEF;color:var(--brand);}
.tab.is-active{background:var(--brand);border-color:var(--brand);color:#fff;font-weight:600;}

section[id]{scroll-margin-top:130px;}
#news{display:block;position:relative;top:-130px;visibility:hidden;}

/* ===== 案例卡片栅格 ===== */
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.case-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);
  transition:box-shadow .22s ease,border-color .22s ease,transform .22s ease;
}
.case-card:hover{box-shadow:var(--sh-2);border-color:#C9DCEF;transform:translateY(-2px);}
.case-media{position:relative;aspect-ratio:16/9;background:var(--img-bg);overflow:hidden;}
.case-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.case-card:hover .case-media img{transform:scale(1.03);}
.case-media .badge{position:absolute;left:12px;top:12px;background:#fff;box-shadow:var(--sh-1);}
.case-body{display:flex;flex-direction:column;flex:1;padding:20px 22px 22px;}
.case-body h3{
  font-size:18px;margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .18s ease;
}
.case-card:hover h3{color:var(--brand);}
.case-body p{
  font-size:14.5px;color:var(--text);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.case-foot{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:18px;padding-top:14px;border-top:1px solid var(--line);
}
.case-foot .meta{font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums;}
.case-foot .link-more{font-size:13.5px;}

/* ===== 重点案例（左右交替） ===== */
.feature{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:48px;align-items:center;}
.feature + .feature{margin-top:64px;}
.feature--reverse .feature-media{order:2;}
.feature-media{position:relative;border-radius:var(--r-img);overflow:hidden;background:var(--img-bg);}
.feature-media img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .3s ease;}
.feature:hover .feature-media img{transform:scale(1.03);}
.feature-body h3{font-size:23px;margin:14px 0 12px;}
.feature-body > p{font-size:15.5px;}
.feature-list{margin:18px 0 22px;}
.feature-list li{position:relative;padding-left:18px;margin-bottom:10px;font-size:15px;color:var(--text);}
.feature-list li::before{
  content:"";position:absolute;left:0;top:11px;width:7px;height:7px;border-radius:2px;background:var(--brand);
}
.feature-meta{display:flex;flex-wrap:wrap;gap:10px;align-items:center;}

/* ===== 协作流程 ===== */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;}
.step{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 24px;box-shadow:var(--sh-1);
  transition:box-shadow .22s ease,border-color .22s ease,transform .22s ease;
}
.step:hover{box-shadow:var(--sh-2);border-color:#C9DCEF;transform:translateY(-2px);}
.step-num{
  display:inline-block;font-size:13px;font-weight:700;letter-spacing:1px;color:var(--accent);
  font-variant-numeric:tabular-nums;margin-bottom:12px;
}
.step h3{font-size:17px;margin-bottom:8px;}
.step p{font-size:14.5px;line-height:1.75;color:var(--text);}

/* ===== 撰写原则（左 sticky + 右条目） ===== */
.principle-grid{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:24px;}
.principle-aside{grid-column:span 4;position:sticky;top:130px;align-self:start;}
.principle-aside h2{margin-bottom:12px;}
.principle-aside p{font-size:15px;color:var(--muted);}
.principle-list{grid-column:span 8;}
.principle-item{
  display:flex;gap:20px;align-items:flex-start;padding:22px 20px;border-top:1px solid var(--line);
  transition:background-color .18s ease;
}
.principle-item:last-child{border-bottom:1px solid var(--line);}
.principle-item:hover{background:var(--brand-light);}
.principle-item .idx{font-size:15px;font-weight:700;color:var(--accent);font-variant-numeric:tabular-nums;flex:0 0 auto;}
.principle-item h3{font-size:17px;margin-bottom:6px;}
.principle-item p{font-size:14.5px;line-height:1.75;}

/* ===== CTA 通栏 ===== */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:28px;
  background:var(--brand-light);border-radius:var(--r-card);padding:38px 42px;
}
.cta-band h2{font-size:24px;margin-bottom:8px;}
.cta-band p{font-size:15px;color:#41505F;}
.cta-actions{display:flex;gap:12px;flex:0 0 auto;flex-wrap:wrap;}

/* ===== FAQ ===== */
.faq-grid{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:24px;}
.faq-aside{grid-column:span 4;position:sticky;top:130px;align-self:start;}
.faq-aside h2{margin-bottom:10px;}
.faq-aside p{font-size:15px;color:var(--muted);}
.faq-list{grid-column:span 8;}
.faq-item{border-top:1px solid var(--line);}
.faq-item:last-child{border-bottom:1px solid var(--line);}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:62px;padding:12px 4px;cursor:pointer;
  font-size:17px;font-weight:600;color:var(--head);line-height:1.5;
  transition:color .18s ease;
}
.faq-item summary:hover{color:var(--brand);}
.faq-item summary::after{
  content:"+";flex:0 0 auto;font-size:20px;font-weight:500;color:var(--muted);
  transition:transform .2s ease,color .2s ease;
}
.faq-item[open] summary{color:var(--brand);}
.faq-item[open] summary::after{transform:rotate(45deg);color:var(--brand);}
.faq-answer{padding:0 4px 20px;font-size:15px;line-height:1.85;color:var(--text);}

/* ===== 页脚 ===== */
.site-footer{background:#16202E;color:rgba(255,255,255,.78);margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px;padding:64px 0 40px;}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand .logo-mark{background:linear-gradient(135deg,#2C6FBF 0%,#1D5BA8 100%);}
.footer-brand .logo-text{color:#fff;}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.66);max-width:340px;}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px;}
.footer-col ul li{margin-bottom:10px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.7);}
.footer-col a:hover{color:#fff;}
.footer-col .plain{font-size:14px;color:rgba(255,255,255,.62);display:block;line-height:1.75;}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  border-top:1px solid rgba(255,255,255,.12);padding:18px 0 28px;
  font-size:13px;color:rgba(255,255,255,.58);
}
.footer-bottom a{color:rgba(255,255,255,.78);}
.footer-bottom a:hover{color:#fff;}

/* ===== 响应式 ===== */
@media (max-width:1199px){
  .container{padding:0 24px;}
  .card-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
}
@media (max-width:991px){
  h1{font-size:30px;}
  h2{font-size:25px;}
  .section{padding:64px 0;}
  .container{padding:0 20px;}
  .header-search{display:none;}
  .nav-toggle{display:inline-flex;}
  .channel-row{display:none;box-shadow:var(--sh-3);}
  .channel-row.is-open{display:block;}
  .channel-scroll{flex-direction:column;align-items:stretch;gap:2px;padding:8px 0 16px;overflow:visible;}
  .channel-link{height:48px;padding:0 16px;border-radius:8px;justify-content:flex-start;}
  .channel-link::after{display:none;}
  .channel-link.is-active{background:var(--brand-light);box-shadow:inset 3px 0 0 var(--brand);}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .feature{grid-template-columns:1fr;gap:24px;}
  .feature--reverse .feature-media{order:0;}
  .feature + .feature{margin-top:48px;}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));}
  .principle-aside,.principle-list,.faq-aside,.faq-list{grid-column:span 12;}
  .principle-aside,.faq-aside{position:static;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;padding:48px 0 32px;}
}
@media (max-width:575px){
  body{font-size:15.5px;}
  h1{font-size:26px;letter-spacing:-0.2px;}
  h2{font-size:22px;}
  .container{padding:0 16px;}
  .section{padding:52px 0;}
  .brand-row{gap:12px;padding:12px 0;}
  .logo-text{font-size:16px;}
  .logo-text small{display:none;}
  .logo-mark{width:38px;height:38px;font-size:14px;border-radius:10px;}
  .banner{min-height:220px;}
  .banner .container{padding-top:34px;padding-bottom:34px;}
  .banner-sub{font-size:15px;}
  .card-grid{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:28px 22px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .case-body{padding:18px;}
  .step{padding:22px 18px;}
  .footer-grid{grid-template-columns:1fr;padding:40px 0 24px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
  .case-card:hover,.step:hover,.btn:hover{transform:none;}
  .case-card:hover .case-media img,.feature:hover .feature-media img{transform:none;}
}

/* roulang page: category4 */
:root{
  --primary:#1D5BA8;
  --primary-dark:#143F73;
  --primary-light:#E8F0FA;
  --accent:#E8892B;
  --green:#2E9E6B;
  --title:#16202E;
  --text:#4A5A6B;
  --muted:#7A8A9A;
  --line:#E3E9F0;
  --alt:#F5F8FB;
  --white:#FFFFFF;
  --radius-card:14px;
  --radius-img:12px;
  --radius-btn:10px;
  --radius-pill:999px;
  --radius-input:10px;
  --shadow-1:0 2px 8px rgba(22,32,46,.06);
  --shadow-2:0 10px 24px rgba(22,32,46,.10);
  --shadow-3:0 6px 18px rgba(22,32,46,.08);
  --container:1200px;
  --section-space:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--white);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--primary);text-decoration:none;transition:color .18s ease,border-color .18s ease,background-color .18s ease;}
a:hover{color:var(--primary-dark);}
h1,h2,h3,h4{margin:0;color:var(--title);font-weight:700;letter-spacing:-.2px;}
h1{font-size:38px;font-weight:800;line-height:1.3;letter-spacing:-.5px;}
h2{font-size:29px;line-height:1.35;}
h3{font-size:20px;font-weight:600;line-height:1.5;}
h4{font-size:17px;font-weight:600;line-height:1.55;}
p{margin:0 0 16px;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
input,select,textarea{font-family:inherit;font-size:15px;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.section{padding:var(--section-space) 0;}
.section--alt{background:var(--alt);}
.section-head{max-width:780px;margin-bottom:40px;}
.section-head h2{margin-bottom:12px;}
.section-head p{color:var(--muted);font-size:16px;margin:0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--primary);
  letter-spacing:.6px;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--accent);border-radius:2px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  border:1px solid transparent;transition:all .18s ease;text-align:center;
}
.btn--primary{background:var(--primary);color:#fff;border-color:var(--primary);}
.btn--primary:hover{background:var(--primary-dark);border-color:var(--primary-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn--primary:active{transform:translateY(1px);box-shadow:none;}
.btn--ghost{background:#fff;color:var(--primary-dark);border-color:#D7E1EC;}
.btn--ghost:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-1px);box-shadow:var(--shadow-1);}
.btn--ghost:active{transform:translateY(1px);box-shadow:none;}
.btn--sm{height:40px;padding:0 18px;font-size:14px;}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  border-radius:var(--radius-pill);font-size:12px;font-weight:600;
  background:var(--primary-light);color:var(--primary-dark);line-height:1;
}
.badge--accent{background:#fff;border:1px solid var(--accent);color:#B96A16;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--primary);}
.link-arrow i{font-size:12px;transition:transform .18s ease;}
.link-arrow:hover i{transform:translateX(3px);}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 1px 0 rgba(22,32,46,.02);}
.brand-row{display:flex;align-items:center;gap:24px;padding:14px 0;}
.logo{display:flex;align-items:center;gap:12px;flex:0 0 auto;color:var(--primary-dark);}
.logo:hover{color:var(--primary-dark);}
.logo-mark{
  width:44px;height:44px;border-radius:12px;flex:0 0 44px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,#1D5BA8,#143F73);
  color:#fff;font-size:16px;font-weight:800;letter-spacing:.5px;
}
.logo-text{display:flex;flex-direction:column;font-size:17px;font-weight:800;line-height:1.25;}
.logo-text small{font-size:12px;font-weight:400;color:var(--muted);margin-top:3px;letter-spacing:.2px;}
.header-search{position:relative;flex:1 1 auto;max-width:420px;display:flex;}
.header-search input[type="search"]{
  width:100%;height:40px;padding:0 46px 0 14px;
  border:1px solid #D7E1EC;border-radius:var(--radius-input);
  color:var(--title);background:#fff;outline:none;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.header-search input[type="search"]::placeholder{color:#9FAEBC;}
.header-search input[type="search"]:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(29,91,168,.14);}
.header-search button{
  position:absolute;right:4px;top:4px;width:34px;height:32px;
  border:0;background:transparent;color:var(--primary);
  border-radius:8px;cursor:pointer;transition:background .18s ease;
}
.header-search button:hover{background:var(--primary-light);}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:44px;height:44px;border:1px solid #D7E1EC;border-radius:10px;
  background:#fff;color:var(--primary-dark);cursor:pointer;font-size:17px;
  transition:border-color .18s ease,color .18s ease;
}
.nav-toggle:hover{border-color:var(--primary);color:var(--primary);}
.channel-row{border-top:1px solid var(--line);background:#fff;}
.channel-scroll{display:flex;align-items:center;gap:4px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;}
.channel-scroll::-webkit-scrollbar{display:none;}
.channel-link{
  position:relative;display:flex;align-items:center;height:44px;padding:0 18px;
  font-size:15px;font-weight:500;color:var(--text);white-space:nowrap;
}
.channel-link:hover{color:var(--primary);}
.channel-link.is-active{color:var(--primary);font-weight:700;}
.channel-link.is-active::after{
  content:"";position:absolute;left:18px;right:18px;bottom:0;height:3px;
  background:var(--accent);border-radius:3px 3px 0 0;
}
.nav-mask{display:none;}

/* ---------- page hero ---------- */
.page-hero{
  position:relative;min-height:240px;display:flex;align-items:center;
  background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(20,63,115,.25),rgba(29,91,168,.25));
}
.page-hero .container{position:relative;z-index:1;padding-top:38px;padding-bottom:38px;}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;
  border-radius:var(--radius-pill);background:rgba(255,255,255,.18);
  border:1px solid rgba(255,255,255,.38);color:#fff;font-size:13px;font-weight:600;
  margin-bottom:14px;
}
.page-hero h1{
  color:#fff;font-size:clamp(26px,3.4vw,38px);
  text-shadow:0 2px 12px rgba(16,32,46,.45);margin-bottom:12px;
}
.page-hero p{
  color:rgba(255,255,255,.95);font-size:17px;max-width:760px;margin:0;
  text-shadow:0 1px 10px rgba(16,32,46,.45);
}
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--muted);padding:16px 0;}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .sep{color:#C3CFDB;}
.breadcrumb .current{color:var(--primary);font-weight:600;}

/* ---------- topic bar ---------- */
.topic-bar{display:flex;flex-wrap:wrap;gap:10px;padding:6px 0 0;}
.topic-pill{
  display:inline-flex;align-items:center;gap:8px;height:38px;padding:0 16px;
  border-radius:var(--radius-pill);border:1px solid var(--line);background:#fff;
  color:var(--text);font-size:14px;font-weight:500;
  transition:border-color .18s ease,color .18s ease,background .18s ease;
}
.topic-pill:hover{border-color:var(--primary);color:var(--primary);}
.topic-pill.is-active{background:var(--primary-light);border-color:#C9DCEF;color:var(--primary-dark);font-weight:600;}

/* ---------- card grid ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.help-card{
  display:flex;flex-direction:column;background:#fff;
  border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);overflow:hidden;
  transition:box-shadow .22s ease,border-color .22s ease,transform .22s ease;
}
.help-card:hover{box-shadow:var(--shadow-2);border-color:#C9DCEF;transform:translateY(-2px);}
.thumb{aspect-ratio:16/9;background:#E9EFF6;overflow:hidden;}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.help-card:hover .thumb img{transform:scale(1.03);}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-body h3{font-size:19px;transition:color .18s ease;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.help-card:hover .card-body h3{color:var(--primary);}
.card-body p{font-size:15px;line-height:1.75;margin:0;color:var(--text);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-foot{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding-top:14px;border-top:1px solid var(--line);
  font-size:13px;color:var(--muted);
}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.step{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px 24px;box-shadow:var(--shadow-1);
  transition:box-shadow .22s ease,border-color .22s ease,transform .22s ease;
}
.step:hover{box-shadow:var(--shadow-2);border-color:#C9DCEF;transform:translateY(-2px);}
.step-no{
  font-size:34px;font-weight:700;color:var(--primary);line-height:1;
  font-variant-numeric:tabular-nums;padding-bottom:10px;
  border-bottom:2px solid var(--accent);display:inline-block;
}
.step h3{margin:16px 0 8px;font-size:17px;}
.step p{font-size:14px;color:var(--muted);margin:0;line-height:1.75;}

/* ---------- faq layout ---------- */
.faq-layout{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start;}
.faq-aside{position:sticky;top:120px;}
.faq-aside h2{margin-bottom:12px;}
.faq-aside p{color:var(--muted);font-size:15px;margin-bottom:20px;}
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:18px;
  min-height:62px;padding:16px 0;font-size:17px;font-weight:600;color:var(--title);line-height:1.5;
  transition:color .18s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--primary);}
.faq-item[open] summary{color:var(--primary);}
.faq-icon{
  flex:0 0 26px;width:26px;height:26px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--primary-light);color:var(--primary);font-size:13px;
  transition:transform .25s ease,background .2s ease,color .2s ease;
}
.faq-item[open] .faq-icon{transform:rotate(45deg);background:var(--primary);color:#fff;}
.faq-body{padding:0 46px 20px 0;font-size:15px;line-height:1.8;color:var(--text);}
.faq-body p{margin:0;}

/* ---------- cta band ---------- */
.cta-band{
  background:var(--primary-light);border-radius:var(--radius-card);
  padding:36px 40px;display:flex;align-items:center;justify-content:space-between;gap:28px;
}
.cta-band h3{font-size:24px;margin-bottom:8px;}
.cta-band p{margin:0;color:var(--text);font-size:15px;}
.cta-band .btn{flex:0 0 auto;}

/* ---------- quick qa ---------- */
.qa-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.qa-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-1);
  transition:box-shadow .22s ease,border-color .22s ease,transform .22s ease;
}
.qa-card:hover{box-shadow:var(--shadow-2);border-color:#C9DCEF;transform:translateY(-2px);}
.qa-card h3{font-size:17px;margin-bottom:10px;display:flex;gap:10px;align-items:flex-start;}
.qa-card h3 i{color:var(--accent);font-size:15px;margin-top:5px;}
.qa-card p{font-size:15px;margin:0;color:var(--text);line-height:1.75;}

/* ---------- footer ---------- */
.site-footer{background:var(--title);color:#AEBBCB;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px;padding:64px 0 40px;}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand .logo-text{color:#fff;font-weight:800;}
.footer-brand .logo-text small{color:#8D9DAE;}
.footer-brand p{font-size:14px;color:#AEBBCB;margin:0;line-height:1.8;max-width:340px;}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a,.footer-col .plain{color:#AEBBCB;font-size:14px;}
.footer-col a:hover{color:#fff;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.10);
  padding:18px 0 26px;display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:13px;color:#8D9DAE;
}
.footer-bottom a{color:#C7D3E1;}
.footer-bottom a:hover{color:#fff;}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  :root{--section-space:80px;}
}
@media (max-width:991px){
  :root{--section-space:64px;}
  .brand-row{gap:16px;}
  .header-search{max-width:300px;}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:repeat(2,1fr);}
  .qa-grid{grid-template-columns:repeat(2,1fr);}
  .faq-layout{grid-template-columns:1fr;gap:28px;}
  .faq-aside{position:static;top:auto;}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:30px;}
}
@media (max-width:767px){
  :root{--section-space:52px;}
  .container{padding:0 16px;}
  .logo-mark{width:40px;height:40px;flex:0 0 40px;font-size:15px;border-radius:10px;}
  .logo-text{font-size:15px;}
  .logo-text small{display:none;}
  .header-search{display:none;}
  .header-actions .btn{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-mask{
    display:block;position:fixed;inset:0;background:rgba(16,32,46,.42);
    opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;z-index:70;
  }
  body.nav-open .nav-mask{opacity:1;visibility:visible;}
  .channel-row{
    position:fixed;top:0;right:0;bottom:0;width:min(86vw,340px);
    background:#fff;border-top:0;padding-top:70px;overflow-y:auto;z-index:80;
    transform:translateX(100%);transition:transform .28s ease;
    box-shadow:-8px 0 24px rgba(22,32,46,.14);
  }
  body.nav-open .channel-row{transform:translateX(0);}
  .channel-scroll{flex-direction:column;align-items:stretch;gap:4px;overflow:visible;padding:0 10px 24px;}
  .channel-link{height:52px;border-radius:10px;padding:0 14px;font-size:15px;}
  .channel-link.is-active{background:var(--primary-light);}
  .channel-link.is-active::after{display:none;}
  .channel-link.is-active::before{
    content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;
    background:var(--primary);border-radius:3px;
  }
  .page-hero{min-height:220px;}
  .page-hero .container{padding-top:30px;padding-bottom:30px;}
  .page-hero p{font-size:15px;}
}
@media (max-width:575px){
  .card-grid{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;}
  .qa-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;padding:48px 0 32px;}
  .footer-bottom{flex-direction:column;}
  .btn{width:100%;}
  .cta-band .btn{width:100%;}
  .faq-body{padding-right:0;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none !important;animation:none !important;}
  .help-card:hover,.qa-card:hover,.step:hover{transform:none;}
  .help-card:hover .thumb img{transform:none;}
  .link-arrow:hover i{transform:none;}
}

/* roulang page: category5 */
:root{
  --primary:#1D5BA8;
  --primary-dark:#143F73;
  --primary-light:#E8F0FA;
  --accent:#E8892B;
  --green:#2E9E6B;
  --text:#4A5A6B;
  --title:#16202E;
  --muted:#7A8A9A;
  --line:#E3E9F0;
  --alt:#F5F8FB;
  --white:#FFFFFF;
  --img-bg:#E9EFF6;
  --border-soft:#D7E1EC;
  --border-hover:#C9DCEF;
  --error:#C2483A;
  --radius-card:14px;
  --radius-img:12px;
  --radius-btn:10px;
  --radius-pill:999px;
  --shadow-card:0 2px 8px rgba(22,32,46,.06);
  --shadow-card-hover:0 10px 24px rgba(22,32,46,.10);
  --shadow-float:0 6px 18px rgba(22,32,46,.08);
  --font-cn:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC","Noto Sans CJK SC",Arial,Helvetica,sans-serif;
  --sec-pad:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--white);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--primary);text-decoration:none;transition:color .18s ease,border-color .18s ease,background-color .18s ease;}
a:hover{color:var(--primary-dark);}
h1,h2,h3,h4,h5{margin:0;color:var(--title);font-family:var(--font-cn);}
h1{font-size:38px;font-weight:800;line-height:1.3;letter-spacing:-.5px;}
h2{font-size:29px;font-weight:700;line-height:1.35;letter-spacing:-.3px;}
h3{font-size:20px;font-weight:600;line-height:1.5;}
h4{font-size:17px;font-weight:600;line-height:1.5;}
p{margin:0 0 16px;}
ul,ol{margin:0;padding:0;list-style:none;}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.show-for-sr{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:0 24px;border-radius:var(--radius-btn);font-weight:600;font-size:15px;border:1px solid transparent;transition:all .18s ease;text-align:center;}
.btn--sm{min-height:40px;padding:0 18px;font-size:14px;border-radius:9px;}
.btn--primary{background:var(--primary);color:#fff;box-shadow:var(--shadow-card);}
.btn--primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-card-hover);}
.btn--primary:active{transform:translateY(1px);box-shadow:none;}
.btn--ghost{background:#fff;color:var(--title);border-color:var(--border-soft);}
.btn--ghost:hover{border-color:var(--primary);color:var(--primary);}
.btn--ghost:active{transform:translateY(1px);}
.btn--block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.5;pointer-events:none;}
.link-more{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:14px;color:var(--primary);border-bottom:2px solid transparent;padding-bottom:2px;}
.link-more:hover{border-bottom-color:var(--primary);color:var(--primary-dark);}

/* ---------- 徽章 ---------- */
.badge{display:inline-block;padding:4px 10px;border-radius:var(--radius-pill);background:var(--primary-light);color:var(--primary);font-size:12px;font-weight:600;line-height:1.6;}
.badge--hot{background:#fff;border:1px solid var(--accent);color:#B4690F;}

/* ---------- 头部 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--shadow-float);}
.brand-row{display:flex;align-items:center;gap:24px;padding:14px 0;}
.logo{display:flex;align-items:center;gap:12px;color:var(--title);flex:0 0 auto;}
.logo:hover{color:var(--title);}
.logo-mark{display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;border-radius:11px;background:linear-gradient(135deg,var(--primary) 0%,var(--primary-dark) 100%);color:#fff;font-weight:800;font-size:16px;letter-spacing:.5px;flex:0 0 auto;}
.logo-text{display:flex;flex-direction:column;font-size:18px;font-weight:800;color:var(--primary-dark);line-height:1.25;letter-spacing:-.2px;}
.logo-text small{font-size:12px;font-weight:500;color:var(--muted);letter-spacing:0;margin-top:2px;}
.header-search{position:relative;flex:1 1 auto;max-width:420px;display:flex;align-items:center;}
.header-search input[type=search]{width:100%;height:40px;padding:0 46px 0 16px;border:1px solid var(--border-soft);border-radius:var(--radius-btn);background:var(--alt);font-size:14px;color:var(--title);transition:all .18s ease;}
.header-search input[type=search]::placeholder{color:var(--muted);}
.header-search input[type=search]:focus{outline:none;background:#fff;border-color:var(--primary);box-shadow:0 0 0 3px rgba(29,91,168,.14);}
.header-search button{position:absolute;right:4px;top:4px;width:34px;height:32px;border:0;border-radius:8px;background:transparent;color:var(--muted);display:flex;align-items:center;justify-content:center;transition:all .18s ease;}
.header-search button:hover{color:var(--primary);background:var(--primary-light);}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto;flex:0 0 auto;}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--border-soft);border-radius:10px;background:#fff;color:var(--title);font-size:17px;align-items:center;justify-content:center;}
.nav-toggle:hover{border-color:var(--primary);color:var(--primary);}
.channel-row{border-top:1px solid var(--line);background:#fff;}
.channel-scroll{display:flex;align-items:center;gap:4px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;}
.channel-scroll::-webkit-scrollbar{display:none;}
.channel-link{position:relative;display:inline-flex;align-items:center;height:44px;padding:0 18px;font-size:15px;font-weight:500;color:var(--text);white-space:nowrap;transition:color .18s ease;}
.channel-link:hover{color:var(--primary);}
.channel-link.is-active{color:var(--primary);font-weight:700;}
.channel-link.is-active::after{content:"";position:absolute;left:18px;right:18px;bottom:0;height:3px;border-radius:2px 2px 0 0;background:var(--accent);}
.mobile-drawer{position:fixed;inset:0;z-index:80;display:none;}
.mobile-drawer.is-open{display:block;}
.mobile-drawer__mask{position:absolute;inset:0;background:rgba(22,32,46,.45);}
.mobile-drawer__panel{position:absolute;top:0;right:0;width:290px;max-width:86%;height:100%;background:#fff;box-shadow:-8px 0 28px rgba(22,32,46,.16);padding:20px;overflow-y:auto;}
.mobile-drawer__head{display:flex;align-items:center;justify-content:space-between;padding-bottom:14px;border-bottom:1px solid var(--line);margin-bottom:12px;}
.mobile-drawer__head strong{font-size:16px;color:var(--title);}
.mobile-drawer__close{width:40px;height:40px;border:1px solid var(--border-soft);border-radius:10px;background:#fff;color:var(--title);}
.drawer-link{display:block;padding:13px 12px;font-size:15px;color:var(--text);border-radius:10px;}
.drawer-link:hover{background:var(--alt);color:var(--primary);}
.drawer-link.is-active{color:var(--primary);font-weight:700;border-left:3px solid var(--primary);border-radius:0 10px 10px 0;background:var(--primary-light);}

/* ---------- 页头横幅 ---------- */
.page-banner{position:relative;min-height:250px;display:flex;align-items:center;background-image:url('/assets/images/backpic/back-3.png');background-size:cover;background-position:center;overflow:hidden;}
.page-banner::after{content:"";position:absolute;inset:0;background:linear-gradient(120deg,rgba(20,63,115,.72) 0%,rgba(29,91,168,.45) 55%,rgba(29,91,168,.28) 100%);}
.page-banner .container{position:relative;z-index:2;padding-top:44px;padding-bottom:44px;}
.page-banner h1{color:#fff;font-size:36px;max-width:760px;text-shadow:0 2px 10px rgba(22,32,46,.32);}
.page-banner p{color:rgba(255,255,255,.92);margin:14px 0 0;max-width:720px;font-size:16px;}
.banner-tag{display:inline-block;margin-bottom:14px;padding:4px 12px;border-radius:var(--radius-pill);background:rgba(255,255,255,.18);border:1px solid rgba(255,255,255,.4);color:#fff;font-size:12px;font-weight:600;}

/* ---------- 面包屑 ---------- */
.crumb-bar{background:var(--alt);border-bottom:1px solid var(--line);}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);padding:12px 0;}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .sep{color:#C3CDD8;}
.breadcrumb .current{color:var(--primary);font-weight:600;}

/* ---------- 频道条 ---------- */
.channel-strip{padding-top:32px;}
.channel-strip__inner{display:flex;align-items:center;gap:8px;overflow-x:auto;scrollbar-width:none;padding:8px;background:var(--alt);border:1px solid var(--line);border-radius:var(--radius-pill);}
.channel-strip__inner::-webkit-scrollbar{display:none;}
.strip-link{display:inline-flex;align-items:center;height:38px;padding:0 18px;border-radius:var(--radius-pill);font-size:14px;font-weight:500;color:var(--text);white-space:nowrap;transition:all .18s ease;}
.strip-link:hover{background:#fff;color:var(--primary);box-shadow:var(--shadow-card);}
.strip-link.is-active{background:var(--primary);color:#fff;font-weight:600;}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0;}
.section--alt{background:var(--alt);}
.section--tight{padding:64px 0;}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head .eyebrow{display:inline-block;margin-bottom:12px;font-size:13px;font-weight:700;color:var(--primary);letter-spacing:1px;}
.section-head h2{margin-bottom:12px;}
.section-head p{margin:0;color:var(--text);}

/* ---------- 联系分栏 ---------- */
.contact-layout{display:grid;grid-template-columns:5fr 7fr;gap:32px;align-items:start;}
.info-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-card);padding:28px;}
.info-card h3{margin-bottom:18px;}
.info-list li{display:flex;gap:14px;padding:14px 0;border-bottom:1px dashed var(--line);}
.info-list li:last-child{border-bottom:0;padding-bottom:0;}
.info-list .ico{flex:0 0 auto;width:38px;height:38px;border-radius:10px;background:var(--primary-light);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:15px;}
.info-list .txt strong{display:block;font-size:14px;color:var(--title);margin-bottom:2px;}
.info-list .txt span{font-size:14px;color:var(--text);line-height:1.7;}
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-card);padding:28px;}
.form-card h3{margin-bottom:6px;}
.form-card > p{margin-bottom:22px;font-size:14px;color:var(--muted);}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.field{display:flex;flex-direction:column;gap:8px;}
.field--full{grid-column:1 / -1;}
.field label{font-size:14px;color:var(--text);font-weight:500;}
.field input,.field select,.field textarea{width:100%;min-height:48px;padding:12px 14px;border:1px solid var(--border-soft);border-radius:var(--radius-btn);background:#fff;color:var(--title);font-size:15px;transition:all .18s ease;}
.field textarea{min-height:120px;resize:vertical;line-height:1.75;}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(29,91,168,.14);}
.field .hint{font-size:12px;color:var(--muted);}
.privacy-note{margin:14px 0 0;font-size:13px;color:var(--muted);line-height:1.7;}

/* ---------- 地图位 ---------- */
.map-box{margin-top:28px;position:relative;border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;background:var(--img-bg);min-height:260px;display:flex;align-items:center;justify-content:center;text-align:center;}
.map-box__grid{position:absolute;inset:0;background-image:linear-gradient(rgba(29,91,168,.08) 1px,transparent 1px),linear-gradient(90deg,rgba(29,91,168,.08) 1px,transparent 1px);background-size:40px 40px;}
.map-box__inner{position:relative;z-index:2;padding:32px 24px;}
.map-box__inner i{font-size:30px;color:var(--primary);margin-bottom:12px;display:block;}
.map-box__inner strong{display:block;font-size:16px;color:var(--title);margin-bottom:6px;}
.map-box__inner span{font-size:14px;color:var(--muted);}

/* ---------- 卡片栅格 ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-card);overflow:hidden;transition:all .25s ease;}
.card:hover{box-shadow:var(--shadow-card-hover);border-color:var(--border-hover);transform:translateY(-2px);}
.card:hover .card__title{color:var(--primary);}
.card__media{aspect-ratio:16 / 9;overflow:hidden;background:var(--img-bg);}
.card__media img{width:100%;height:100%;object-fit:cover;transition:transform .28s ease;}
.card:hover .card__media img{transform:scale(1.03);}
.card__body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto;}
.card__title{font-size:18px;font-weight:600;color:var(--title);line-height:1.5;transition:color .18s ease;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card__desc{font-size:14px;color:var(--text);line-height:1.75;margin:0;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.card__meta{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--muted);margin-top:auto;padding-top:6px;}

/* ---------- 图文区块 ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;}
.split__media{border-radius:var(--radius-img);overflow:hidden;background:var(--img-bg);aspect-ratio:4 / 3;}
.split__media img{width:100%;height:100%;object-fit:cover;}
.split h2{margin-bottom:14px;}
.check-list{margin-top:20px;display:grid;gap:12px;}
.check-list li{display:flex;gap:12px;font-size:15px;color:var(--text);}
.check-list i{color:var(--green);font-size:15px;margin-top:6px;}

/* ---------- 步骤 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.step{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:24px;box-shadow:var(--shadow-card);transition:all .22s ease;}
.step:hover{box-shadow:var(--shadow-card-hover);border-color:var(--border-hover);}
.step__no{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:10px;background:var(--primary-light);color:var(--primary);font-weight:800;font-size:15px;margin-bottom:14px;font-variant-numeric:tabular-nums;}
.step h3{font-size:17px;margin-bottom:8px;}
.step p{margin:0;font-size:14px;line-height:1.75;}

/* ---------- CTA 通栏 ---------- */
.cta-band{background:var(--primary-light);border-radius:var(--radius-card);padding:34px 36px;display:flex;align-items:center;justify-content:space-between;gap:28px;}
.cta-band h2{font-size:24px;margin-bottom:8px;}
.cta-band p{margin:0;font-size:15px;color:var(--text);}
.cta-band .cta-actions{display:flex;gap:12px;flex:0 0 auto;}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:4fr 8fr;gap:44px;align-items:start;}
.faq-aside{position:sticky;top:120px;}
.faq-aside h2{margin-bottom:12px;}
.faq-aside p{margin:0;font-size:15px;}
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:62px;padding:14px 0;font-size:17px;font-weight:600;color:var(--title);cursor:pointer;list-style:none;transition:color .18s ease;}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--primary);}
.faq-item summary .plus{flex:0 0 auto;width:28px;height:28px;border-radius:50%;background:var(--alt);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:13px;transition:transform .22s ease,background-color .22s ease;}
.faq-item[open] summary{color:var(--primary);}
.faq-item[open] summary .plus{transform:rotate(45deg);background:var(--primary-light);}
.faq-item__body{padding:0 44px 20px 0;font-size:15px;line-height:1.85;color:var(--text);margin:0;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--primary-dark);color:rgba(255,255,255,.76);padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:32px;padding-bottom:44px;}
.footer-brand .logo{color:#fff;}
.footer-brand .logo-text{color:#fff;}
.footer-brand .logo-text small{color:rgba(255,255,255,.6);}
.footer-brand .logo-mark{background:rgba(255,255,255,.16);}
.footer-brand p{margin:16px 0 0;font-size:14px;line-height:1.85;color:rgba(255,255,255,.7);}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;}
.footer-col ul{display:grid;gap:11px;}
.footer-col a{color:rgba(255,255,255,.74);font-size:14px;}
.footer-col a:hover{color:#fff;}
.footer-col .plain{color:rgba(255,255,255,.68);font-size:14px;line-height:1.75;}
.footer-bottom{border-top:1px solid rgba(255,255,255,.14);padding:20px 0 28px;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.6);}
.footer-bottom a{color:rgba(255,255,255,.78);}
.footer-bottom a:hover{color:#fff;}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .section{padding:80px 0;}
  .footer-grid{grid-template-columns:1.5fr 1fr 1fr;}
  .footer-grid .footer-col:last-child{grid-column:1 / -1;}
}
@media (max-width:991px){
  h1{font-size:31px;}
  h2{font-size:25px;}
  .page-banner h1{font-size:29px;}
  .header-search{display:none;}
  .nav-toggle{display:inline-flex;}
  .channel-row{display:none;}
  .section{padding:64px 0;}
  .contact-layout{grid-template-columns:1fr;gap:24px;}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:repeat(2,1fr);}
  .faq-layout{grid-template-columns:1fr;gap:24px;}
  .faq-aside{position:static;}
  .split{grid-template-columns:1fr;gap:28px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:28px;}
}
@media (max-width:767px){
  .head-hidden{}
  .section{padding:52px 0;}
  .section--tight{padding:44px 0;}
  .grid-3,.grid-2{grid-template-columns:1fr;}
  .form-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px;}
  .footer-brand{grid-column:1 / -1;}
  .cta-band .cta-actions{width:100%;flex-direction:column;}
  .cta-band .cta-actions .btn{width:100%;}
}
@media (max-width:575px){
  .container{padding:0 16px;}
  h1{font-size:26px;}
  h2{font-size:22px;}
  .page-banner h1{font-size:26px;}
  .page-banner .container{padding-top:34px;padding-bottom:34px;}
  .logo-text{font-size:16px;}
  .logo-text small{display:none;}
  .brand-row{gap:12px;}
  .header-actions .btn{display:none;}
  .steps{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .faq-item summary{font-size:16px;}
  .faq-item__body{padding-right:0;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;}
  .card:hover{transform:none;}
  .card:hover .card__media img{transform:none;}
  .btn--primary:hover{transform:none;}
}