/* roulang page: index */
/* ==================== 设计变量 ==================== */
:root{
  --primary:#1F6FB2;
  --primary-600:#1a5f99;
  --primary-soft:rgba(31,111,178,.08);
  --primary-soft-16:rgba(31,111,178,.16);
  --dark:#12304A;
  --accent:#E8762C;
  --accent-600:#d2641c;
  --mint:#17A08A;
  --bg:#F4F7FB;
  --white:#FFFFFF;
  --border:#E3EAF2;
  --border-soft:#EEF3F8;
  --text:#2A3B4A;
  --muted:#6B7C8C;
  --radius-lg:16px;
  --radius:14px;
  --radius-sm:10px;
  --shadow-sm:0 4px 20px rgba(18,48,74,.07);
  --shadow-lg:0 14px 32px rgba(18,48,74,.13);
  --sidebar-w:240px;
  --section-y:96px;
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}
/* ==================== 基础重置 ==================== */
*,*::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:1.85;
  color:var(--text);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto;}
a{color:var(--primary);text-decoration:none;transition:color .18s ease,background-color .18s ease,border-color .18s ease;}
a:hover{color:var(--primary-600);}
h1,h2,h3,h4{margin:0;color:var(--dark);font-weight:700;line-height:1.3;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button,input,textarea,select{font-family:inherit;font-size:inherit;color:inherit;}
::selection{background:rgba(31,111,178,.18);}
:focus-visible{outline:3px solid rgba(31,111,178,.4);outline-offset:2px;}
/* ==================== 布局容器 ==================== */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
.site-main{
  margin-left:var(--sidebar-w);
  min-height:100vh;
  display:flex;
  flex-direction:column;
}
.page-wrap{flex:1 0 auto;overflow:hidden;}
/* ==================== 侧栏导航 ==================== */
.site-sidebar{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--sidebar-w);
  background:var(--white);
  border-right:1px solid var(--border);
  display:flex;
  flex-direction:column;
  gap:22px;
  padding:26px 20px 24px;
  overflow-y:auto;
  z-index:60;
}
.sidebar-brand{display:flex;flex-direction:column;gap:8px;padding-bottom:18px;border-bottom:1px solid var(--border-soft);}
.brand-logo{display:flex;flex-direction:column;gap:2px;line-height:1.15;}
.brand-logo__top{font-size:19px;font-weight:700;color:var(--dark);letter-spacing:.2px;}
.brand-logo__bottom{font-size:13px;font-weight:600;color:var(--primary);letter-spacing:.42em;}
.brand-logo:hover .brand-logo__top{color:var(--primary);}
.brand-tag{font-size:12px;color:var(--muted);letter-spacing:.4px;}
.sidebar-nav{display:flex;flex-direction:column;gap:4px;}
.nav-item{
  position:relative;
  display:flex;align-items:center;
  height:44px;padding:0 14px;
  border-radius:var(--radius-sm);
  font-size:15px;color:var(--text);
  transition:background-color .18s ease,color .18s ease;
}
.nav-item::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;
  border-radius:0 3px 3px 0;background:transparent;transition:background-color .18s ease;
}
.nav-item:hover{background:var(--bg);color:var(--primary);}
.nav-item.is-active{background:var(--primary-soft);color:var(--primary);font-weight:600;}
.nav-item.is-active::before{background:var(--primary);}
.sidebar-group{display:flex;flex-direction:column;gap:4px;padding-top:16px;border-top:1px solid var(--border-soft);}
.sidebar-group__title{font-size:12px;color:var(--muted);letter-spacing:1.2px;margin-bottom:4px;}
.nav-sub{
  display:flex;align-items:center;height:34px;padding:0 14px;
  border-radius:8px;font-size:13px;color:var(--muted);
  transition:background-color .18s ease,color .18s ease;
}
.nav-sub:hover{background:var(--bg);color:var(--primary);}
.sidebar-contact{
  margin-top:auto;
  padding:18px;
  border-radius:var(--radius);
  background:linear-gradient(160deg,#F2F7FC 0%,#EAF2F9 100%);
  border:1px solid var(--border);
}
.sidebar-contact p{font-size:13px;color:var(--muted);line-height:1.7;}
.sidebar-contact strong{display:block;font-size:15px;color:var(--dark);letter-spacing:.3px;}
.sidebar-contact .btn{width:100%;margin-top:12px;}
/* ==================== 顶部移动端导航条 ==================== */
.mobile-bar{
  display:none;
  position:fixed;top:0;left:0;right:0;height:56px;
  background:var(--white);border-bottom:1px solid var(--border);
  box-shadow:0 2px 12px rgba(18,48,74,.06);
  align-items:center;justify-content:space-between;
  padding:0 16px;z-index:70;
}
.mobile-brand{display:flex;flex-direction:column;line-height:1.1;}
.mobile-brand__top{font-size:15px;font-weight:700;color:var(--dark);}
.mobile-brand__bottom{font-size:10px;font-weight:600;color:var(--primary);letter-spacing:.32em;}
.mobile-toggle{
  width:42px;height:38px;border:1px solid var(--border);border-radius:10px;
  background:var(--white);display:flex;flex-direction:column;justify-content:center;
  align-items:center;gap:5px;cursor:pointer;padding:0;
}
.mobile-toggle span{display:block;width:18px;height:2px;background:var(--dark);border-radius:2px;transition:transform .2s ease,opacity .2s ease;}
.mobile-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.mobile-toggle.is-open span:nth-child(2){opacity:0;}
.mobile-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.nav-backdrop{
  position:fixed;inset:0;background:rgba(18,48,74,.45);
  opacity:0;visibility:hidden;transition:opacity .24s ease,visibility .24s ease;z-index:55;
}
.nav-backdrop.is-open{opacity:1;visibility:visible;}
/* ==================== 按钮 ==================== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;line-height:1.2;
  border:1.5px solid transparent;cursor:pointer;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
  white-space:nowrap;
}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 6px 18px rgba(232,118,44,.24);}
.btn-accent:hover{background:var(--accent-600);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(232,118,44,.3);}
.btn-primary{background:var(--primary);color:#fff;}
.btn-primary:hover{background:var(--primary-600);color:#fff;transform:translateY(-1px);}
.btn-ghost{background:transparent;border-color:var(--primary);color:var(--primary);}
.btn-ghost:hover{background:var(--primary-soft);color:var(--primary);}
.btn-block{width:100%;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--primary);
}
.link-arrow::after{content:"→";transition:transform .18s ease;}
.link-arrow:hover::after{transform:translateX(3px);}
/* ==================== 标签与徽章 ==================== */
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 11px;
  border-radius:999px;font-size:12px;font-weight:600;letter-spacing:.3px;
  background:var(--primary-soft);color:var(--primary);
}
.badge--mint{background:rgba(23,160,138,.12);color:var(--mint);}
.badge--accent{background:rgba(232,118,44,.12);color:var(--accent);}
/* ==================== 板块骨架 ==================== */
.section{padding:var(--section-y) 0;}
.section--white{background:var(--white);}
.section--tight{padding:calc(var(--section-y) * .62) 0;}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head h2{font-size:clamp(24px,2.4vw,34px);}
.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;}
.section-head--row .section-head__text{max-width:760px;}
.eyebrow{
  display:inline-block;margin-bottom:14px;
  font-size:13px;font-weight:600;letter-spacing:2px;color:var(--primary);
}
/* ==================== Hero ==================== */
.hero{position:relative;padding:64px 0 48px;background:var(--white);overflow:hidden;}
.hero::after{
  content:"";position:absolute;right:-80px;bottom:-60px;width:420px;height:300px;
  background-image:repeating-linear-gradient(115deg,rgba(31,111,178,.08) 0 2px,transparent 2px 16px);
  opacity:.75;pointer-events:none;
}
.hero-grid{position:relative;z-index:2;}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;
  border-radius:999px;background:var(--primary-soft);color:var(--primary);
  font-size:13px;font-weight:600;letter-spacing:.6px;margin-bottom:20px;
}
.hero-title{font-size:clamp(30px,4vw,50px);line-height:1.2;letter-spacing:-.5px;}
.hero-sub{margin-top:20px;font-size:17px;line-height:1.7;color:var(--muted);max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero-media{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;
  box-shadow:var(--shadow-sm);background:#E9F0F6;
  aspect-ratio:16/10;
}
.hero-media img{width:100%;height:100%;object-fit:cover;}
.hero-media::after{content:"";position:absolute;inset:0;background:rgba(31,111,178,.06);}
.trust-bar{
  margin-top:44px;
  display:grid;grid-template-columns:repeat(3,1fr);
  background:var(--white);border:1px solid var(--border);border-radius:var(--radius);
  box-shadow:var(--shadow-sm);padding:22px 0;
}
.trust-item{display:flex;align-items:center;justify-content:center;gap:12px;padding:0 18px;border-right:1px solid var(--border);}
.trust-item:last-child{border-right:0;}
.trust-icon{
  width:38px;height:38px;flex:0 0 38px;border-radius:11px;
  background:var(--primary-soft);color:var(--primary);
  display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:700;
}
.trust-text{display:flex;flex-direction:column;line-height:1.25;}
.trust-text strong{font-size:15px;color:var(--dark);font-weight:600;}
.trust-text span{font-size:13px;color:var(--muted);}
/* ==================== 服务区（8+4） ==================== */
.service-grid{align-items:stretch;}
.feature-card{
  height:100%;display:flex;flex-direction:column;
  background:var(--white);border:1px solid var(--border);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow-sm);
  transition:box-shadow .2s ease,transform .2s ease;
}
.feature-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-3px);}
.feature-card__media img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.feature-card__body{padding:26px 28px 28px;display:flex;flex-direction:column;gap:12px;flex:1;}
.feature-card__body h3{font-size:21px;}
.feature-card__body p{color:var(--muted);font-size:15px;}
.feature-card__body .link-arrow{margin-top:auto;padding-top:6px;}
.stack-col{display:flex;flex-direction:column;gap:24px;height:100%;}
.mini-card{
  flex:1;display:flex;flex-direction:column;gap:10px;
  background:var(--white);border:1px solid var(--border);border-radius:var(--radius);
  padding:24px;box-shadow:var(--shadow-sm);
  transition:box-shadow .2s ease,transform .2s ease;
}
.mini-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-3px);}
.mini-card h3{font-size:18px;font-weight:600;}
.mini-card p{font-size:14px;color:var(--muted);}
.mini-card .link-arrow{margin-top:auto;}
/* ==================== 数据条 ==================== */
.stats-band{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
  background:var(--dark);border-radius:var(--radius-lg);
  padding:40px 26px;box-shadow:0 18px 40px rgba(18,48,74,.18);
}
.stat{text-align:center;border-right:1px solid rgba(255,255,255,.14);padding:0 8px;}
.stat:last-child{border-right:0;}
.stat__num{display:block;font-size:44px;font-weight:700;line-height:1.1;color:var(--mint);}
.stat__num small{font-size:15px;font-weight:600;margin-left:4px;}
.stat__label{display:block;margin-top:10px;font-size:14px;color:rgba(255,255,255,.72);}
/* ==================== 案例区 ==================== */
.case-card{
  height:100%;display:flex;flex-direction:column;
  background:var(--white);border:1px solid var(--border);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow-sm);
  transition:box-shadow .2s ease,transform .2s ease;
}
.case-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-3px);}
.case-card__media img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.case-card__body{padding:24px 26px 26px;display:flex;flex-direction:column;gap:10px;flex:1;}
.case-card__body h3{font-size:19px;}
.case-card__body p{font-size:15px;color:var(--muted);}
.case-card--placeholder{
  justify-content:center;align-items:flex-start;gap:14px;padding:32px 28px;
  background:linear-gradient(155deg,#1F6FB2 0%,#17578d 100%);border-color:transparent;color:#fff;
}
.case-card--placeholder h3{color:#fff;font-size:19px;}
.case-card--placeholder p{color:rgba(255,255,255,.82);font-size:14px;}
.placeholder-mark{
  width:46px;height:46px;border-radius:13px;background:rgba(255,255,255,.16);
  display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:700;
}
/* ==================== 方案区 ==================== */
.plan-row{align-items:center;}
.plan-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);}
.plan-title{font-size:clamp(24px,2.4vw,32px);margin-bottom:14px;}
.plan-desc{color:var(--muted);font-size:15px;margin-bottom:26px;}
.step-list{display:flex;flex-direction:column;gap:20px;}
.step-item{display:flex;gap:18px;padding-bottom:20px;border-bottom:1px solid var(--border-soft);}
.step-item:last-child{border-bottom:0;padding-bottom:0;}
.step-item__num{flex:0 0 46px;font-size:26px;font-weight:300;color:var(--primary);line-height:1.2;}
.step-item__body h3{font-size:17px;font-weight:600;margin-bottom:6px;}
.step-item__body p{font-size:14px;color:var(--muted);}
/* ==================== 资讯列表 ==================== */
.posts-grid{margin-top:0;}
.post-card{
  height:100%;background:var(--white);border:1px solid var(--border);
  border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);
  transition:box-shadow .2s ease,transform .2s ease;
}
.post-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-3px);}
.post-card__link{display:block;color:inherit;height:100%;}
.post-card__link:hover{color:inherit;}
.post-card__media img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.post-card__body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;}
.post-card__title{
  font-size:18px;font-weight:600;line-height:1.5;color:var(--dark);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-card__excerpt{
  font-size:14px;color:var(--muted);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-card__meta{
  display:flex;align-items:center;justify-content:space-between;
  margin-top:6px;padding-top:14px;border-top:1px solid var(--border-soft);
}
.post-card__date{font-size:14px;color:var(--muted);}
.post-card__more{font-size:14px;font-weight:600;color:var(--primary);}
.post-card:hover .post-card__more{color:var(--primary-600);}
.empty-state{
  display:flex;flex-direction:column;align-items:center;gap:14px;
  padding:52px 28px;text-align:center;
  background:var(--white);border:1px dashed var(--border);border-radius:var(--radius);
}
.empty-state__icon{
  width:56px;height:56px;border-radius:16px;background:var(--primary-soft);
  color:var(--primary);display:flex;align-items:center;justify-content:center;
  font-size:22px;font-weight:700;
}
.empty-state p{color:var(--muted);font-size:15px;}
/* ==================== CTA 条 ==================== */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--radius-lg);
  background:var(--dark);
  padding:46px 40px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
}
.cta-band::after{
  content:"";position:absolute;right:-40px;top:-40px;width:320px;height:220px;
  background-image:radial-gradient(rgba(255,255,255,.14) 1.6px,transparent 1.6px);
  background-size:18px 18px;opacity:.5;pointer-events:none;
}
.cta-band__text{position:relative;z-index:2;max-width:640px;}
.cta-band__text h2{color:#fff;font-size:clamp(22px,2.2vw,30px);}
.cta-band__text p{margin-top:10px;color:rgba(255,255,255,.78);font-size:15px;}
.cta-band .btn{position:relative;z-index:2;}
/* ==================== FAQ ==================== */
.faq-list{display:flex;flex-direction:column;gap:12px;}
.faq-item{
  background:var(--white);border:1px solid var(--border);border-radius:12px;
  overflow:hidden;transition:box-shadow .2s ease,border-color .2s ease;
}
.faq-item:hover{border-color:#D5E2EE;}
.faq-item[open]{box-shadow:inset 3px 0 0 0 var(--primary),var(--shadow-sm);border-color:#D5E2EE;}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:18px 22px;font-size:17px;font-weight:600;color:var(--dark);
  cursor:pointer;list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";flex:0 0 auto;font-size:20px;font-weight:400;color:var(--primary);
  line-height:1;transition:transform .2s ease;
}
.faq-item[open] summary::after{content:"−";}
.faq-item[open] summary{color:var(--primary);}
.faq-answer{padding:0 22px 20px;font-size:15px;color:var(--muted);}
/* ==================== 联系区 ==================== */
.contact-grid{align-items:stretch;}
.contact-card{
  background:var(--white);border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:30px 32px;box-shadow:var(--shadow-sm);height:100%;
}
.contact-card h3{font-size:20px;margin-bottom:6px;}
.contact-card > p{font-size:14px;color:var(--muted);margin-bottom:22px;}
.field{display:flex;flex-direction:column;gap:8px;margin-bottom:18px;}
.field label{font-size:14px;font-weight:600;color:var(--dark);}
.field input,.field textarea{
  width:100%;border:1px solid #D7E1EA;border-radius:var(--radius-sm);
  padding:0 14px;height:46px;background:var(--white);
  transition:border-color .18s ease,box-shadow .18s ease;
}
.field textarea{height:auto;min-height:118px;padding:12px 14px;resize:vertical;line-height:1.7;}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-soft-16);
}
.form-note{font-size:13px;color:var(--accent);margin-top:12px;min-height:20px;}
.info-card{
  background:linear-gradient(160deg,#F2F7FC 0%,#E9F1F9 100%);
  border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:30px 30px;height:100%;
}
.info-card h3{font-size:20px;margin-bottom:20px;}
.info-item{display:flex;gap:14px;padding:16px 0;border-bottom:1px solid rgba(31,111,178,.12);}
.info-item:last-child{border-bottom:0;}
.info-item__icon{
  flex:0 0 40px;width:40px;height:40px;border-radius:12px;
  background:var(--white);color:var(--primary);
  display:flex;align-items:center;justify-content:center;font-size:15px;font-weight:700;
  box-shadow:0 2px 10px rgba(18,48,74,.06);
}
.info-item__body strong{display:block;font-size:15px;color:var(--dark);font-weight:600;margin-bottom:4px;}
.info-item__body span{font-size:14px;color:var(--muted);line-height:1.7;}
/* ==================== 页脚 ==================== */
.site-footer{background:var(--dark);color:rgba(255,255,255,.78);margin-top:auto;}
.footer-top{padding:64px 0 40px;}
.footer-grid{gap:0;}
.footer-brand{display:flex;flex-direction:column;line-height:1.15;margin-bottom:16px;}
.footer-brand__top{font-size:19px;font-weight:700;color:#fff;}
.footer-brand__bottom{font-size:13px;font-weight:600;color:var(--mint);letter-spacing:.42em;}
.footer-desc{font-size:14px;color:rgba(255,255,255,.62);line-height:1.8;}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:18px;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{
  position:relative;display:inline-block;padding-left:0;
  font-size:14px;color:rgba(255,255,255,.72);
  transition:color .18s ease,padding-left .18s ease;
}
.footer-links a::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:2px;height:0;background:var(--accent);transition:height .18s ease;
}
.footer-links a:hover{color:#fff;padding-left:10px;}
.footer-links a:hover::before{height:14px;}
.footer-contact p{font-size:14px;color:rgba(255,255,255,.72);line-height:1.9;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 26px;
}
.footer-bottom__inner{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;}
.footer-bottom p{font-size:13px;color:rgba(255,255,255,.55);}
/* ==================== Foundation 覆盖 ==================== */
.grid-margin-x{margin-left:-12px;margin-right:-12px;}
.grid-margin-x > .cell{padding-left:12px;padding-right:12px;}
.grid-margin-x > .cell + .cell{margin-top:0;}
.button,.button.primary,.button.secondary{background:none;border:0;padding:0;margin:0;font-family:inherit;}
details summary{list-style:none;}
/* ==================== 响应式 ==================== */
@media (min-width:1024px) and (max-width:1199px){
  :root{--sidebar-w:200px;--section-y:80px;}
  .container{padding:0 26px;}
}
@media (max-width:1023px){
  .mobile-bar{display:flex;}
  .site-sidebar{
    width:280px;transform:translateX(-100%);
    transition:transform .24s cubic-bezier(.22,.61,.36,1);
    box-shadow:0 0 40px rgba(18,48,74,.18);
  }
  .site-sidebar.is-open{transform:translateX(0);}
  .site-main{margin-left:0;padding-top:56px;}
  .container{padding:0 20px;}
  .section{padding:56px 0;}
  .section--tight{padding:40px 0;}
  .hero{padding:40px 0 32px;}
  .hero-sub{max-width:none;}
  .stats-band{grid-template-columns:repeat(2,1fr);gap:28px 12px;padding:32px 18px;}
  .stat:nth-child(2){border-right:0;}
  .stat:nth-child(1),.stat:nth-child(2){padding-bottom:8px;}
  .stat__num{font-size:36px;}
  .cta-band{padding:34px 26px;}
  .footer-top{padding:48px 0 28px;}
}
@media (max-width:768px){
  .hero-title{font-size:clamp(26px,7vw,34px);}
  .trust-bar{grid-template-columns:1fr;padding:8px 0;}
  .trust-item{justify-content:flex-start;border-right:0;border-bottom:1px solid var(--border);padding:14px 20px;}
  .trust-item:last-child{border-bottom:0;}
  .section-head{margin-bottom:32px;}
  .section-head--row{flex-direction:column;align-items:flex-start;}
  .service-grid > .cell + .cell{margin-top:24px;}
  .contact-card,.info-card{padding:24px 20px;}
  .footer-col{margin-bottom:26px;}
  .footer-bottom__inner{justify-content:flex-start;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
  .stats-band{grid-template-columns:1fr;}
  .stat{border-right:0;border-bottom:1px solid rgba(255,255,255,.14);padding-bottom:18px;}
  .stat:last-child{border-bottom:0;padding-bottom:0;}
  .faq-item summary{font-size:16px;padding:16px 18px;}
  .faq-answer{padding:0 18px 18px;}
  .cta-band{flex-direction:column;align-items:flex-start;}
  .cta-band .btn{width:100%;}
}
@media (prefers-reduced-motion:reduce){
  *{transition-duration:.01ms !important;animation-duration:.01ms !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category1 */
:root{
  --brand:#1F6FB2;
  --brand-deep:#155a92;
  --ink:#12304A;
  --accent:#E8762C;
  --accent-deep:#d4661f;
  --teal:#17A08A;
  --bg:#F4F7FB;
  --card:#FFFFFF;
  --border:#E3EAF2;
  --text:#2A3B4A;
  --muted:#6B7C8C;
  --radius:14px;
  --radius-sm:10px;
  --shadow:0 4px 20px rgba(18,48,74,.07);
  --shadow-hover:0 14px 32px rgba(18,48,74,.13);
  --sidebar-w:240px;
  --foundation-palette-primary:#1F6FB2;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  padding:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-deep);}
ul,ol{list-style:none;margin:0;padding:0;}
h1,h2,h3,h4,p{margin:0;}
button{font-family:inherit;}
:focus-visible{outline:3px solid rgba(31,111,178,.35);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}

/* ============ 左侧竖向导航 ============ */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
  background:#fff;border-right:1px solid var(--border);
  display:flex;flex-direction:column;
  padding:26px 18px 22px;overflow-y:auto;z-index:100;
}
.sidebar-brand{display:block;margin-bottom:26px;padding:0 10px;text-decoration:none;}
.brand-top{display:block;font-size:19px;font-weight:700;color:var(--ink);letter-spacing:.5px;line-height:1.3;}
.brand-bottom{display:block;font-size:13px;font-weight:600;color:var(--brand);letter-spacing:.62em;margin-top:5px;}
.brand-note{display:block;font-size:12px;color:var(--muted);margin-top:10px;letter-spacing:.02em;}
.sidebar-label{font-size:12px;font-weight:600;color:var(--muted);letter-spacing:.14em;padding:0 10px;margin:16px 0 8px;}
.sidebar-nav{display:flex;flex-direction:column;}
.nav-item{
  position:relative;display:flex;align-items:center;height:44px;
  padding:0 12px;border-radius:8px;font-size:15px;color:var(--text);
  transition:background .2s ease,color .2s ease;
}
.nav-item:hover{background:#F1F6FB;color:var(--brand);}
.nav-item.is-active{background:rgba(31,111,178,.08);color:var(--brand);font-weight:600;}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;
  border-radius:2px;background:var(--brand);
}
.sidebar-sub{display:flex;flex-direction:column;margin-top:4px;}
.sub-item{display:block;font-size:13.5px;color:var(--muted);padding:9px 12px;border-radius:8px;transition:.2s;}
.sub-item:hover{color:var(--brand);background:#F1F6FB;}
.sidebar-foot{margin-top:auto;padding:18px 14px 16px;border-top:1px solid var(--border);}
.sidebar-foot p{font-size:13px;color:var(--muted);margin-bottom:6px;line-height:1.7;}
.sidebar-foot strong{color:var(--ink);font-size:15px;font-weight:700;}
.sidebar-cta{display:block;text-align:center;margin-top:14px;}

.mobile-bar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;
  background:#fff;border-bottom:1px solid var(--border);
  box-shadow:0 2px 10px rgba(18,48,74,.05);
  align-items:center;justify-content:space-between;padding:0 18px;z-index:95;
}
.mobile-brand{font-size:16px;font-weight:700;color:var(--ink);}
.menu-toggle{width:40px;height:40px;border:0;background:transparent;display:flex;flex-direction:column;justify-content:center;gap:5px;cursor:pointer;padding:0;}
.menu-toggle span{display:block;height:2px;width:22px;border-radius:2px;background:var(--ink);transition:.2s;}
.menu-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.menu-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.menu-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.nav-overlay{position:fixed;inset:0;background:rgba(18,48,74,.45);opacity:0;visibility:hidden;transition:opacity .24s ease,visibility .24s ease;z-index:90;}
.nav-overlay.is-open{opacity:1;visibility:visible;}

/* ============ 主内容 ============ */
.site-main{margin-left:var(--sidebar-w);min-height:100vh;display:flex;flex-direction:column;}
.content-wrap{flex:1 0 auto;}

/* ============ 通用组件 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;
  border-radius:var(--radius-sm);padding:14px 26px;
  border:1.5px solid transparent;cursor:pointer;
  transition:background .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 8px 20px rgba(232,118,44,.24);}
.btn-primary:hover,.btn-primary:focus{background:var(--accent-deep);color:#fff;transform:translateY(-1px);}
.btn-outline{background:transparent;border-color:var(--brand);color:var(--brand);}
.btn-outline:hover,.btn-outline:focus{background:rgba(31,111,178,.08);color:var(--brand);}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.55);color:#fff;}
.btn-ghost:hover,.btn-ghost:focus{background:rgba(255,255,255,.12);color:#fff;border-color:#fff;}
.btn-sm{padding:11px 20px;font-size:14px;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:15px;color:var(--brand);}
.link-arrow i{transition:transform .2s ease;}
.link-arrow:hover i{transform:translateX(3px);}
.tag-pill{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;
  border-radius:999px;font-size:12px;font-weight:600;letter-spacing:.02em;
  background:rgba(31,111,178,.10);color:var(--brand);
}
.tag-pill--teal{background:rgba(23,160,138,.12);color:#12806e;}
.tag-pill--accent{background:rgba(232,118,44,.12);color:#c25c17;}

/* ============ 首屏 ============ */
.page-hero{position:relative;padding:60px 0 56px;background:linear-gradient(180deg,#fff 0%,#F4F7FB 100%);overflow:hidden;}
.page-hero::after{
  content:"";position:absolute;right:-40px;top:0;width:360px;height:100%;
  background-image:radial-gradient(rgba(31,111,178,.16) 1.5px,transparent 1.5px);
  background-size:18px 18px;opacity:.5;pointer-events:none;
}
.page-hero .container{position:relative;z-index:2;}
.crumb{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--muted);margin-bottom:18px;}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--brand);}
.crumb span{color:#B9C6D2;}
.crumb-current{color:var(--brand);}
.hero-copy h1{
  font-size:clamp(30px,4vw,47px);line-height:1.22;font-weight:700;
  color:var(--ink);margin:16px 0 18px;letter-spacing:-.01em;
}
.hero-sub{font-size:18px;line-height:1.7;color:var(--ink);font-weight:500;margin-bottom:14px;}
.hero-text{font-size:16px;line-height:1.9;color:var(--muted);max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-media{
  border-radius:16px;overflow:hidden;aspect-ratio:16/10;background:#E9EFF6;
  box-shadow:var(--shadow);position:relative;
}
.hero-media img{width:100%;height:100%;object-fit:cover;}
.hero-media::after{content:"";position:absolute;inset:0;background:rgba(31,111,178,.06);}

/* ============ 信任条 ============ */
.trust-strip{padding:0 0 8px;}
.trust-bar{display:flex;flex-wrap:wrap;background:#fff;border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;}
.trust-item{flex:1 1 0;min-width:220px;display:flex;align-items:center;gap:14px;padding:22px 24px;border-left:1px solid var(--border);}
.trust-item:first-child{border-left:none;}
.trust-ico{
  flex:0 0 auto;width:42px;height:42px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(31,111,178,.09);color:var(--brand);font-size:17px;
}
.trust-item strong{display:block;font-size:15px;font-weight:600;color:var(--ink);line-height:1.5;}
.trust-item span{display:block;font-size:13px;color:var(--muted);line-height:1.6;}

/* ============ 板块 ============ */
.section{padding:72px 0;}
.section--soft{background:#fff;}
.section-head{max-width:720px;margin-bottom:38px;}
.section-kicker{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  color:var(--brand);letter-spacing:.1em;margin-bottom:12px;
}
.section-kicker::before{content:"";width:18px;height:3px;border-radius:2px;background:var(--brand);}
.section-head h2{font-size:clamp(24px,2.4vw,33px);line-height:1.32;font-weight:700;color:var(--ink);}
.section-head p{margin-top:14px;font-size:16px;line-height:1.85;color:var(--muted);}

/* ============ 左图右文条目 ============ */
.entry-list{display:flex;flex-direction:column;gap:24px;}
.entry-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:24px;
  transition:box-shadow .2s ease,transform .2s ease;
}
.entry-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px);}
.entry-media{border-radius:12px;overflow:hidden;aspect-ratio:16/10;background:#E9EFF6;position:relative;}
.entry-media img{width:100%;height:100%;object-fit:cover;}
.entry-index{
  position:absolute;left:12px;top:12px;z-index:2;
  background:rgba(18,48,74,.78);color:#fff;font-size:12px;font-weight:700;
  padding:4px 10px;border-radius:999px;letter-spacing:.06em;
}
.entry-body h3{font-size:21px;line-height:1.45;font-weight:600;color:var(--ink);margin:12px 0 12px;}
.entry-body p{font-size:15.5px;line-height:1.88;color:var(--muted);}
.check-list{margin-top:16px;}
.check-list li{position:relative;padding-left:20px;margin-bottom:9px;font-size:15px;color:var(--text);line-height:1.75;}
.check-list li::before{
  content:"";position:absolute;left:0;top:10px;width:7px;height:7px;
  border-radius:2px;background:var(--brand);
}
.entry-body .link-arrow{margin-top:16px;}

/* ============ 核对要点双卡 ============ */
.check-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.check-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:28px;height:100%;
  transition:box-shadow .2s ease,transform .2s ease;
}
.check-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px);}
.check-card__head{display:flex;align-items:center;gap:12px;margin-bottom:18px;}
.check-card__head i{
  width:40px;height:40px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:rgba(23,160,138,.12);color:var(--teal);font-size:16px;
}
.check-card:nth-child(2) .check-card__head i{background:rgba(232,118,44,.13);color:var(--accent);}
.check-card h3{font-size:19px;font-weight:600;color:var(--ink);}
.check-card p{font-size:15px;color:var(--muted);line-height:1.85;margin-bottom:14px;}
.mini-list li{
  position:relative;padding:10px 0 10px 24px;font-size:15px;color:var(--text);
  border-bottom:1px dashed var(--border);line-height:1.7;
}
.mini-list li:last-child{border-bottom:none;}
.mini-list li::before{
  content:"\f00c";font-family:"Font Awesome 6 Free";font-weight:900;
  position:absolute;left:0;top:11px;font-size:12px;color:var(--brand);
}

/* ============ FAQ ============ */
.faq-wrap{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,8fr);gap:40px;}
.faq-intro h2{font-size:clamp(24px,2.4vw,32px);line-height:1.32;font-weight:700;color:var(--ink);}
.faq-intro p{margin-top:14px;font-size:15.5px;line-height:1.9;color:var(--muted);}
.faq-item{
  background:#fff;border:1px solid var(--border);border-radius:12px;
  margin-bottom:12px;overflow:hidden;transition:box-shadow .2s ease;
}
.faq-item:hover{box-shadow:var(--shadow);}
.faq-item summary{
  position:relative;cursor:pointer;list-style:none;
  padding:18px 56px 18px 20px;font-size:17px;font-weight:600;color:var(--ink);line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);
  font-size:22px;font-weight:400;color:var(--brand);line-height:1;
}
.faq-item[open]{box-shadow:inset 3px 0 0 var(--brand);}
.faq-item[open] summary::after{content:"\2212";}
.faq-item[open] summary{color:var(--brand);}
.faq-body{padding:0 22px 20px;font-size:15px;line-height:1.9;color:var(--muted);}

/* ============ CTA 条 ============ */
.section--last{padding-bottom:88px;}
.cta-band{
  position:relative;overflow:hidden;background:var(--ink);border-radius:16px;
  padding:46px 44px;display:flex;flex-wrap:wrap;align-items:center;
  justify-content:space-between;gap:26px;
}
.cta-band::after{
  content:"";position:absolute;right:-60px;bottom:-80px;width:280px;height:280px;
  border-radius:50%;background:radial-gradient(circle,rgba(232,118,44,.22) 0%,transparent 68%);
}
.cta-band > *{position:relative;z-index:2;}
.cta-band h2{font-size:clamp(22px,2.2vw,30px);line-height:1.35;font-weight:700;color:#fff;}
.cta-band p{margin-top:12px;font-size:15.5px;line-height:1.8;color:rgba(255,255,255,.72);max-width:600px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);margin-top:auto;}
.footer-top{padding:56px 0 40px;}
.footer-col{margin-bottom:24px;}
.footer-brand__top{display:block;font-size:18px;font-weight:700;color:#fff;letter-spacing:.5px;}
.footer-brand__bottom{display:block;font-size:13px;font-weight:600;color:#8FC1E8;letter-spacing:.62em;margin-top:4px;}
.footer-desc{font-size:14px;line-height:1.85;color:rgba(255,255,255,.6);margin-top:14px;max-width:280px;}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;}
.footer-links{display:flex;flex-direction:column;}
.footer-links a{
  display:block;font-size:14px;color:rgba(255,255,255,.72);
  padding:6px 0 6px 0;border-left:2px solid transparent;
  transition:color .2s ease,padding-left .2s ease,border-color .2s ease;
}
.footer-links a:hover{color:#fff;padding-left:8px;border-left-color:var(--accent);}
.footer-contact p{font-size:14px;color:rgba(255,255,255,.72);margin-bottom:8px;}
.footer-contact p:last-child{margin-bottom:0;}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:18px 0;font-size:13px;}
.footer-bottom__inner{display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px;}
.footer-bottom p{color:rgba(255,255,255,.55);margin:0;}

/* ============ 响应式 ============ */
@media (min-width:1024px) and (max-width:1199px){
  :root{--sidebar-w:200px;}
  .container{padding:0 24px;}
}
@media (max-width:1023px){
  .sidebar{
    width:288px;transform:translateX(-100%);
    transition:transform .24s ease-out;z-index:110;
    box-shadow:0 12px 40px rgba(18,48,74,.18);
  }
  .sidebar.is-open{transform:translateX(0);}
  .mobile-bar{display:flex;}
  .site-main{margin-left:0;padding-top:56px;}
  .section{padding:56px 0;}
  .page-hero{padding:44px 0 40px;}
  .faq-wrap{grid-template-columns:1fr;gap:28px;}
}
@media (max-width:768px){
  .container{padding:0 18px;}
  .section{padding:48px 0;}
  .section--last{padding-bottom:64px;}
  .hero-copy h1{font-size:28px;}
  .hero-sub{font-size:16.5px;}
  .hero-actions{gap:10px;}
  .hero-actions .btn{width:100%;}
  .trust-bar{flex-direction:column;}
  .trust-item{flex:1 1 auto;border-left:none;border-top:1px solid var(--border);}
  .trust-item:first-child{border-top:none;}
  .check-grid{grid-template-columns:1fr;}
  .entry-card{padding:18px;}
  .entry-body{margin-top:16px;}
  .cta-band{padding:34px 24px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
  .footer-bottom__inner{flex-direction:column;}
}
@media (max-width:480px){
  .container{padding:0 14px;}
  .hero-copy h1{font-size:25px;}
  .section-head h2{font-size:22px;}
  .check-card{padding:22px;}
  .entry-body h3{font-size:19px;}
  .faq-item summary{font-size:16px;padding:16px 48px 16px 16px;}
}

/* roulang page: article */
:root{
  --c-primary:#1F6FB2;
  --c-primary-dark:#17578C;
  --c-primary-soft:rgba(31,111,178,.08);
  --c-dark:#12304A;
  --c-accent:#E8762C;
  --c-accent-dark:#D2661F;
  --c-teal:#17A08A;
  --bg:#F4F7FB;
  --card:#FFFFFF;
  --border:#E3EAF2;
  --text:#2A3B4A;
  --muted:#6B7C8C;
  --sidebar-w:240px;
  --container:1200px;
  --radius:14px;
  --radius-sm:10px;
  --radius-pill:999px;
  --shadow-sm:0 4px 20px rgba(18,48,74,.07);
  --shadow-lg:0 14px 32px rgba(18,48,74,.13);
  --t:200ms ease;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
img{max-width:100%;display:block;}
a{color:var(--c-primary);text-decoration:none;transition:color var(--t);}
a:hover{color:var(--c-primary-dark);}
button{font-family:inherit;}
h1,h2,h3,h4,h5{margin:0;color:var(--c-dark);font-weight:700;line-height:1.3;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
.tnum{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}
:focus-visible{outline:3px solid rgba(31,111,178,.35);outline-offset:2px;border-radius:6px;}

/* ---------- 布局骨架 ---------- */
.content-area{margin-left:var(--sidebar-w);min-height:100vh;display:flex;flex-direction:column;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;}

/* ---------- 侧边导航 ---------- */
.site-sidebar{
  position:fixed;top:0;left:0;width:var(--sidebar-w);height:100vh;
  background:var(--card);border-right:1px solid var(--border);
  padding:26px 18px 22px;overflow-y:auto;z-index:70;
  display:flex;flex-direction:column;
  transition:transform 240ms cubic-bezier(.22,.61,.36,1);
}
.site-sidebar::-webkit-scrollbar{width:6px;}
.site-sidebar::-webkit-scrollbar-thumb{background:#D7E1EA;border-radius:3px;}
.brand-block{display:block;padding:6px 10px 18px;border-bottom:1px solid var(--border);margin-bottom:18px;}
.brand-block__top{display:block;font-size:19px;font-weight:700;color:var(--c-dark);letter-spacing:.5px;}
.brand-block__bottom{display:block;font-size:12px;font-weight:600;color:var(--c-primary);letter-spacing:.42em;margin-top:4px;}
.brand-block__tag{display:block;font-size:12px;color:var(--muted);margin-top:10px;letter-spacing:.04em;}
.side-title{font-size:12px;font-weight:600;color:var(--muted);letter-spacing:.16em;padding:0 12px;margin:6px 0 10px;}
.sidebar-nav{display:flex;flex-direction:column;gap:4px;}
.nav-item{
  position:relative;display:flex;align-items:center;height:44px;padding:0 12px;
  border-radius:8px;font-size:15px;color:var(--text);transition:background var(--t),color var(--t);
}
.nav-item:hover{background:rgba(31,111,178,.06);color:var(--c-primary);}
.nav-item.is-active{background:var(--c-primary-soft);color:var(--c-primary);font-weight:600;}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;border-radius:2px;background:var(--c-primary);
}
.side-cats{display:flex;flex-direction:column;gap:2px;margin-top:22px;}
.side-cats a{
  display:block;padding:9px 12px;border-radius:8px;font-size:13.5px;color:var(--muted);
  transition:background var(--t),color var(--t),padding-left var(--t);
}
.side-cats a:hover{background:rgba(31,111,178,.05);color:var(--c-primary);}
.side-cta{
  margin-top:auto;padding:18px 14px;border-radius:var(--radius);
  background:linear-gradient(180deg,#F4F8FC 0%,#EDF3FA 100%);
  border:1px solid var(--border);
}
.side-cta__label{font-size:12px;color:var(--muted);letter-spacing:.1em;}
.side-cta__phone{display:block;font-size:18px;font-weight:700;color:var(--c-dark);margin:6px 0 2px;}
.side-cta__time{font-size:12.5px;color:var(--muted);}
.side-cta .btn{width:100%;justify-content:center;margin-top:14px;}

/* ---------- 移动端顶栏 ---------- */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;z-index:80;
  background:#fff;border-bottom:1px solid var(--border);box-shadow:0 2px 10px rgba(18,48,74,.05);
  align-items:center;justify-content:space-between;padding:0 16px;
}
.topbar__brand{font-size:16px;font-weight:700;color:var(--c-dark);}
.topbar__brand span{color:var(--c-primary);font-size:12px;letter-spacing:.28em;margin-left:6px;}
.nav-toggle{
  width:42px;height:42px;border:1px solid var(--border);border-radius:10px;background:#fff;
  color:var(--c-dark);font-size:17px;cursor:pointer;display:flex;align-items:center;justify-content:center;
}
.nav-overlay{
  display:none;position:fixed;inset:0;background:rgba(18,48,74,.45);z-index:65;opacity:0;
  transition:opacity var(--t);
}
.nav-overlay.is-open{display:block;opacity:1;}

/* ---------- 通用组件 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;border:none;cursor:pointer;
  border-radius:var(--radius-sm);padding:13px 26px;font-size:15px;font-weight:600;
  line-height:1;transition:transform var(--t),background var(--t),box-shadow var(--t),color var(--t),border-color var(--t);
}
.btn-primary{background:var(--c-accent);color:#fff;box-shadow:0 6px 16px rgba(232,118,44,.24);}
.btn-primary:hover{background:var(--c-accent-dark);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(232,118,44,.3);}
.btn-outline{background:transparent;color:var(--c-primary);border:1.5px solid var(--c-primary);}
.btn-outline:hover{background:var(--c-primary-soft);color:var(--c-primary-dark);}
.btn-ghost{background:#fff;color:var(--c-dark);border:1px solid var(--border);}
.btn-ghost:hover{border-color:var(--c-primary);color:var(--c-primary);transform:translateY(-1px);}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;padding:0;background:none;border:none;
  color:var(--c-primary);font-size:15px;font-weight:600;cursor:pointer;
}
.btn-link i{transition:transform var(--t);}
.btn-link:hover i{transform:translateX(3px);}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:var(--radius-pill);
  font-size:12px;font-weight:600;background:rgba(31,111,178,.1);color:var(--c-primary);
}
.badge-teal{background:rgba(23,160,138,.12);color:#0F7C6B;}
.badge-accent{background:rgba(232,118,44,.12);color:#C15F1B;}
.card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  box-shadow:var(--shadow-sm);transition:box-shadow var(--t),transform var(--t),border-color var(--t);
}
.card:hover{box-shadow:var(--shadow-lg);transform:translateY(-3px);border-color:#D8E4EF;}
.section{padding:56px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;}
.section-head h2{font-size:clamp(24px,2.4vw,34px);}
.section-head p{font-size:14px;color:var(--muted);margin-top:8px;}
.divider{height:1px;background:var(--border);border:0;margin:0;}

/* ---------- 文章页头部 ---------- */
.page-shell{padding:40px 0 8px;}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12px;color:var(--muted);margin-bottom:20px;
}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb span.sep{color:#C4D1DD;}
.article-hero{
  position:relative;overflow:hidden;border-radius:18px;border:1px solid var(--border);
  background:#fff;box-shadow:var(--shadow-sm);padding:38px 40px;
}
.article-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.07;
  background-image:radial-gradient(var(--c-primary) 1px,transparent 1px);
  background-size:18px 18px;
}
.article-hero > *{position:relative;z-index:1;}
.article-hero h1{
  font-size:clamp(28px,3.4vw,42px);line-height:1.25;margin:16px 0 16px;max-width:900px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 14px;font-size:14px;color:var(--muted);
}
.article-meta .sep{color:#C4D1DD;}
.article-meta i{color:var(--c-primary);margin-right:6px;font-size:12.5px;}

/* ---------- 文章正文 ---------- */
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:36px;align-items:start;
  padding:36px 0 8px;
}
.article-main{min-width:0;max-width:760px;}
.article-body{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);
  box-shadow:var(--shadow-sm);padding:38px 40px;font-size:16px;line-height:1.9;color:var(--text);
}
.article-body h2{
  font-size:clamp(21px,2vw,26px);margin:40px 0 16px;padding-left:14px;position:relative;line-height:1.4;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:5px;bottom:5px;width:4px;border-radius:2px;background:var(--c-primary);
}
.article-body h3{font-size:20px;margin:30px 0 12px;color:var(--c-dark);}
.article-body p{margin:0 0 18px;}
.article-body a{color:var(--c-primary);border-bottom:1px solid rgba(31,111,178,.3);}
.article-body a:hover{border-bottom-color:var(--c-primary);}
.article-body ul{margin:0 0 18px;}
.article-body ul li{position:relative;padding-left:22px;margin-bottom:10px;}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:12px;width:7px;height:7px;border-radius:2px;background:var(--c-primary);
}
.article-body ol{margin:0 0 18px;counter-reset:artnum;}
.article-body ol li{position:relative;padding-left:30px;margin-bottom:10px;counter-increment:artnum;}
.article-body ol li::before{
  content:counter(artnum);position:absolute;left:0;top:4px;width:20px;height:20px;border-radius:50%;
  background:var(--c-primary-soft);color:var(--c-primary);font-size:12px;font-weight:700;
  display:flex;align-items:center;justify-content:center;line-height:1;
}
.article-body blockquote{
  margin:0 0 20px;padding:18px 22px;background:#F5F9FD;border-left:3px solid var(--c-primary);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:#3C5061;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:12px;margin:22px auto;box-shadow:var(--shadow-sm);}
.article-body figure{margin:22px 0;}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:10px;}
.article-body table{width:100%;border-collapse:collapse;margin:0 0 22px;font-size:15px;}
.article-body th,.article-body td{border:1px solid var(--border);padding:11px 14px;text-align:left;}
.article-body th{background:#F4F8FC;color:var(--c-dark);font-weight:600;}
.article-body hr{border:0;height:1px;background:var(--border);margin:32px 0;}
.article-body code{background:#F1F5FA;border-radius:6px;padding:2px 6px;font-size:14px;color:#17578C;}

/* 文章底部 */
.article-foot{margin-top:26px;}
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;}
.tag-row__label{font-size:14px;color:var(--muted);}
.tag{
  display:inline-flex;align-items:center;height:28px;padding:0 14px;border-radius:var(--radius-pill);
  background:#fff;border:1px solid var(--border);font-size:13px;color:var(--text);transition:all var(--t);
}
.tag:hover{border-color:var(--c-primary);color:var(--c-primary);background:var(--c-primary-soft);}
.pager{
  display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:26px;
}
.pager a{
  display:block;background:#fff;border:1px solid var(--border);border-radius:var(--radius);
  padding:20px 22px;box-shadow:var(--shadow-sm);transition:all var(--t);
}
.pager a:hover{box-shadow:var(--shadow-lg);transform:translateY(-3px);border-color:#D8E4EF;}
.pager__label{font-size:12px;color:var(--muted);letter-spacing:.1em;display:block;margin-bottom:8px;}
.pager__title{font-size:16px;font-weight:600;color:var(--c-dark);line-height:1.5;}
.pager .is-next{text-align:right;}

/* 侧栏 */
.article-aside{position:sticky;top:24px;display:flex;flex-direction:column;gap:20px;}
.aside-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);
  box-shadow:var(--shadow-sm);padding:22px;
}
.aside-card h3{font-size:15px;margin-bottom:14px;display:flex;align-items:center;gap:8px;}
.aside-card h3 i{color:var(--c-primary);font-size:13px;}
.aside-list{display:flex;flex-direction:column;gap:2px;}
.aside-list a{
  display:block;font-size:14px;color:var(--text);padding:9px 10px;border-radius:8px;
  transition:background var(--t),color var(--t);
}
.aside-list a:hover{background:var(--c-primary-soft);color:var(--c-primary);}
.aside-note{font-size:13.5px;color:var(--muted);line-height:1.8;}
.aside-cta{background:var(--c-dark);border:none;color:#fff;}
.aside-cta h3{color:#fff;}
.aside-cta p{font-size:13.5px;color:rgba(255,255,255,.72);line-height:1.8;margin-bottom:14px;}
.aside-cta .btn{width:100%;justify-content:center;}

/* ---------- 相关推荐 ---------- */
.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.rel-card{display:flex;flex-direction:column;overflow:hidden;}
.rel-card__media{position:relative;aspect-ratio:4/3;background:#E9EFF6;overflow:hidden;}
.rel-card__media img{width:100%;height:100%;object-fit:cover;transition:transform 400ms ease;}
.rel-card:hover .rel-card__media img{transform:scale(1.04);}
.rel-card__body{padding:22px 22px 20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.rel-card__title{font-size:17px;font-weight:600;color:var(--c-dark);line-height:1.5;}
.rel-card__desc{font-size:14px;color:var(--muted);line-height:1.75;}
.rel-card__foot{
  display:flex;align-items:center;justify-content:space-between;margin-top:auto;padding-top:6px;
  font-size:13px;color:var(--muted);
}
.rel-card__foot .cat{color:var(--c-primary);font-weight:600;}

/* ---------- CTA 条 ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:18px;color:#fff;
  background-image:linear-gradient(105deg,rgba(18,48,74,.94) 0%,rgba(18,48,74,.78) 55%,rgba(31,111,178,.68) 100%),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  padding:48px 46px;display:flex;align-items:center;justify-content:space-between;gap:32px;
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-40px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(232,118,44,.35) 0%,rgba(232,118,44,0) 70%);
}
.cta-band__text{position:relative;z-index:1;max-width:640px;}
.cta-band h2{color:#fff;font-size:clamp(22px,2.4vw,30px);margin-bottom:12px;}
.cta-band p{color:rgba(255,255,255,.78);font-size:15px;}
.cta-band__actions{position:relative;z-index:1;display:flex;gap:14px;flex-wrap:wrap;}

/* 空态 */
.empty-state{
  text-align:center;background:#fff;border:1px solid var(--border);border-radius:var(--radius);
  box-shadow:var(--shadow-sm);padding:56px 28px;
}
.empty-state i{font-size:44px;color:#C4D6E6;display:block;margin-bottom:18px;}
.empty-state h3{font-size:19px;margin-bottom:10px;}
.empty-state p{color:var(--muted);font-size:14.5px;margin-bottom:20px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-dark);color:rgba(255,255,255,.72);margin-top:56px;}
.footer-top{padding:56px 0 40px;}
.footer-col{margin-bottom:28px;}
.footer-brand__top{display:block;font-size:19px;font-weight:700;color:#fff;}
.footer-brand__bottom{display:block;font-size:12px;font-weight:600;letter-spacing:.42em;color:#7FC0F0;margin-top:4px;}
.footer-desc{font-size:14px;line-height:1.85;color:rgba(255,255,255,.66);margin-top:14px;}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{
  position:relative;font-size:14px;color:rgba(255,255,255,.68);padding-left:0;transition:color var(--t),padding-left var(--t);
}
.footer-links a::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:0;height:14px;
  background:var(--c-accent);border-radius:2px;transition:width var(--t);
}
.footer-links a:hover{color:#fff;padding-left:10px;}
.footer-links a:hover::before{width:2px;}
.footer-contact p{font-size:14px;color:rgba(255,255,255,.68);margin-bottom:10px;}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:20px 0;}
.footer-bottom__inner{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;}
.footer-bottom p{font-size:13px;color:rgba(255,255,255,.55);}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  :root{--sidebar-w:200px;}
  .container{padding:0 28px;}
  .article-layout{grid-template-columns:minmax(0,1fr);}
  .article-main{max-width:100%;}
  .article-aside{position:static;flex-direction:row;flex-wrap:wrap;}
  .article-aside .aside-card{flex:1 1 280px;}
  .article-hero{padding:32px 30px;}
  .article-body{padding:32px 30px;}
}
@media (max-width:1023px){
  .site-sidebar{
    transform:translateX(-100%);width:280px;box-shadow:0 0 40px rgba(18,48,74,.2);
  }
  .site-sidebar.is-open{transform:translateX(0);}
  .content-area{margin-left:0;padding-top:56px;}
  .topbar{display:flex;}
  .sidebar-nav .nav-item{height:52px;border-bottom:1px solid #EEF3F8;border-radius:0;}
  .sidebar-nav .nav-item.is-active{border-radius:0;}
  .sidebar-nav .nav-item.is-active::before{top:12px;bottom:12px;}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cta-band{flex-direction:column;align-items:flex-start;padding:36px 30px;}
}
@media (max-width:768px){
  .container{padding:0 18px;}
  .section{padding:44px 0;}
  .article-hero{padding:26px 20px;border-radius:14px;}
  .article-hero h1{font-size:26px;}
  .article-body{padding:26px 20px;font-size:15.5px;}
  .article-body h2{font-size:21px;margin-top:32px;}
  .article-body h3{font-size:18px;}
  .article-body table{font-size:14px;}
  .article-body th,.article-body td{padding:9px 10px;}
  .pager{grid-template-columns:1fr;}
  .pager .is-next{text-align:left;}
  .rel-grid{grid-template-columns:1fr;}
  .cta-band{padding:30px 22px;}
  .footer-top{padding:44px 0 28px;}
}
@media (max-width:520px){
  .container{padding:0 14px;}
  .article-hero h1{font-size:23px;}
  .article-body{padding:22px 16px;}
  .btn{padding:12px 20px;font-size:14.5px;}
  .article-meta{font-size:13px;gap:8px 12px;}
  .cta-band__actions{width:100%;}
  .cta-band__actions .btn{width:100%;justify-content:center;}
}

/* roulang page: category2 */
:root{
  --primary:#1F6FB2;
  --primary-dark:#175a91;
  --dark:#12304A;
  --accent:#E8762C;
  --accent-dark:#cf6520;
  --mint:#17A08A;
  --bg:#F4F7FB;
  --card:#FFFFFF;
  --border:#E3EAF2;
  --text:#2A3B4A;
  --muted:#6B7C8C;
  --radius:14px;
  --radius-sm:10px;
  --shadow:0 4px 20px rgba(18,48,74,.07);
  --shadow-hover:0 14px 32px rgba(18,48,74,.13);
  --sidebar-w:240px;
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;overflow-x:hidden;}
body{
  margin:0;
  padding-left:var(--sidebar-w);
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--primary);text-decoration:none;background-color:transparent;}
a:hover{color:var(--primary-dark);}
button,input,textarea,select{font-family:inherit;font-size:inherit;color:inherit;}
h1,h2,h3,h4,h5{margin:0;color:var(--dark);font-weight:700;line-height:1.3;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:3px solid rgba(31,111,178,.35);outline-offset:2px;border-radius:6px;}

/* ============ 侧栏 ============ */
.site-sidebar{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--sidebar-w);
  background:#fff;
  border-right:1px solid var(--border);
  padding:28px 20px 24px;
  display:flex;
  flex-direction:column;
  overflow-y:auto;
  z-index:70;
}
.brand-logo{display:block;color:var(--dark);}
.brand-logo:hover{color:var(--dark);}
.brand-logo__top{display:block;font-size:19px;font-weight:700;letter-spacing:.5px;line-height:1.25;}
.brand-logo__bottom{display:block;font-size:13px;font-weight:600;letter-spacing:.42em;color:var(--primary);margin-top:3px;}
.brand-tagline{display:block;font-size:12px;color:var(--muted);margin-top:10px;letter-spacing:.04em;}

.sidebar-nav{margin-top:26px;display:flex;flex-direction:column;gap:4px;}
.nav-item{
  position:relative;
  display:flex;align-items:center;
  height:44px;padding:0 12px;
  border-radius:9px;
  font-size:15px;color:var(--text);
  transition:background .2s ease,color .2s ease;
}
.nav-item:hover{background:rgba(31,111,178,.06);color:var(--primary);}
.nav-item.is-active{background:rgba(31,111,178,.08);color:var(--primary);font-weight:600;}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:11px;bottom:11px;width:3px;
  border-radius:2px;background:var(--primary);
}

.sidebar-group{margin-top:26px;}
.sidebar-group__title{font-size:12px;letter-spacing:.12em;color:var(--muted);margin-bottom:10px;}
.sidebar-sublinks{display:flex;flex-direction:column;gap:2px;}
.sidebar-sublinks a{
  display:block;font-size:13.5px;color:var(--muted);
  padding:7px 10px;border-radius:7px;
  transition:background .2s ease,color .2s ease;
}
.sidebar-sublinks a:hover{background:rgba(31,111,178,.06);color:var(--primary);}
.sidebar-sublinks a.is-active{color:var(--primary);background:rgba(31,111,178,.06);font-weight:600;}

.sidebar-contact{margin-top:auto;padding-top:24px;border-top:1px solid var(--border);}
.sidebar-contact__line{font-size:13px;color:var(--muted);margin-bottom:6px;}
.sidebar-contact .btn{margin-top:14px;}

/* ============ 移动端顶栏 ============ */
.mobile-bar{
  display:none;
  position:fixed;top:0;left:0;right:0;height:56px;
  background:#fff;border-bottom:1px solid var(--border);
  box-shadow:0 2px 10px rgba(18,48,74,.06);
  align-items:center;justify-content:space-between;
  padding:0 16px;z-index:80;
}
.mobile-brand{display:flex;flex-direction:column;line-height:1.1;color:var(--dark);}
.mobile-brand:hover{color:var(--dark);}
.mobile-brand__top{font-size:15px;font-weight:700;}
.mobile-brand__bottom{font-size:9px;letter-spacing:.3em;color:var(--primary);margin-top:2px;font-weight:600;}
.mobile-toggle{
  width:42px;height:42px;border:1px solid var(--border);border-radius:10px;
  background:#fff;color:var(--dark);display:flex;align-items:center;justify-content:center;
  cursor:pointer;font-size:17px;transition:background .2s ease,border-color .2s ease;
}
.mobile-toggle:hover{background:#F0F6FC;border-color:rgba(31,111,178,.35);}
.sidebar-mask{
  display:none;position:fixed;inset:0;background:rgba(18,48,74,.45);
  opacity:0;visibility:hidden;transition:opacity .24s ease,visibility .24s ease;z-index:65;
}

/* ============ 主内容与容器 ============ */
.container{max-width:1200px;margin:0 auto;padding:0 32px;width:100%;}
.site-main{max-width:1200px;margin:0 auto;padding:0 32px;}
.section{padding:56px 0;}
.section--tight{padding-top:0;}

.section-head{max-width:760px;margin-bottom:36px;}
.section-head__eyebrow{
  display:inline-block;font-size:12.5px;font-weight:600;letter-spacing:.1em;
  color:var(--primary);background:rgba(31,111,178,.09);
  padding:4px 12px;border-radius:999px;
}
.section-head h2{font-size:clamp(24px,2.4vw,34px);margin:14px 0 12px;}
.section-head h2::before{
  content:"";display:inline-block;width:4px;height:.86em;
  background:var(--primary);border-radius:2px;margin-right:12px;vertical-align:-1px;
}
.section-head p{font-size:16px;color:var(--muted);line-height:1.85;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;line-height:1;
  border:1.5px solid transparent;cursor:pointer;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn--accent{background:var(--accent);color:#fff;box-shadow:0 6px 18px rgba(232,118,44,.24);}
.btn--accent:hover{background:var(--accent-dark);color:#fff;transform:translateY(-1px);}
.btn--outline{border-color:var(--primary);color:var(--primary);background:transparent;}
.btn--outline:hover{background:rgba(31,111,178,.08);color:var(--primary-dark);}
.btn--light{background:#fff;color:var(--dark);}
.btn--light:hover{background:#EAF2FA;color:var(--dark);transform:translateY(-1px);}
.btn--ghost-light{border-color:rgba(255,255,255,.55);color:#fff;background:transparent;}
.btn--ghost-light:hover{background:rgba(255,255,255,.14);color:#fff;}
.btn--block{width:100%;}
.btn--sm{padding:10px 18px;font-size:14px;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--primary);}
.link-arrow i{transition:transform .2s ease;}
.link-arrow:hover i{transform:translateX(3px);}

.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 11px;
  border-radius:999px;font-size:12px;font-weight:600;letter-spacing:.02em;
  background:rgba(23,160,138,.12);color:#0f7f6d;
}
.badge--blue{background:rgba(31,111,178,.1);color:var(--primary);}
.badge--orange{background:rgba(232,118,44,.12);color:#b8591b;}

/* ============ Hero ============ */
.hero{position:relative;padding:64px 0 52px;overflow:hidden;}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(115deg,rgba(31,111,178,.05) 0 2px,transparent 2px 28px);
  opacity:.85;
}
.hero__grid{position:relative;z-index:1;}
.hero__copy h1{
  font-size:clamp(30px,4vw,50px);line-height:1.2;letter-spacing:-.4px;
  margin:18px 0 18px;color:var(--dark);
}
.hero__subtitle{font-size:18px;color:var(--primary);font-weight:600;margin-bottom:14px;}
.hero__desc{font-size:16.5px;color:var(--muted);line-height:1.9;max-width:600px;}
.hero__actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero__media{
  position:relative;border-radius:16px;overflow:hidden;
  box-shadow:0 18px 42px rgba(18,48,74,.16);
  background:#E8EEF5;
}
.hero__media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:16px;}
.hero__media::after{
  content:"";position:absolute;inset:0;border-radius:16px;
  background:rgba(31,111,178,.06);pointer-events:none;
}

.trust-bar{
  display:grid;grid-template-columns:repeat(3,1fr);
  margin-top:46px;padding-top:26px;border-top:1px solid var(--border);
  position:relative;z-index:1;
}
.trust-bar__item{padding:0 22px;border-left:1px solid var(--border);}
.trust-bar__item:first-child{border-left:0;padding-left:0;}
.trust-bar__item i{color:var(--primary);font-size:17px;margin-right:8px;}
.trust-bar__title{display:inline-block;font-size:15px;font-weight:600;color:var(--dark);}
.trust-bar__text{font-size:14px;color:var(--muted);margin-top:6px;}

/* ============ 时间线 ============ */
.timeline{position:relative;margin-top:40px;padding-left:34px;}
.timeline::before{
  content:"";position:absolute;left:7px;top:10px;bottom:34px;width:2px;
  background:linear-gradient(180deg,rgba(31,111,178,.85),rgba(31,111,178,.15));
}
.timeline-item{position:relative;margin-bottom:24px;}
.timeline-item::before{
  content:"";position:absolute;left:-34px;top:24px;width:16px;height:16px;
  border-radius:50%;background:#fff;border:3px solid var(--primary);
  box-shadow:0 0 0 4px rgba(31,111,178,.1);
}
.timeline-item:last-child{margin-bottom:0;}
.timeline-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:24px 26px;
  transition:box-shadow .2s ease,transform .2s ease;
}
.timeline-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px);}
.timeline-card__head{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:10px;}
.timeline-card__step{
  font-size:13px;font-weight:700;color:var(--accent);
  font-variant-numeric:tabular-nums;letter-spacing:.06em;
}
.timeline-card h3{font-size:21px;font-weight:600;margin:0;}
.timeline-card p{font-size:15.5px;color:var(--muted);line-height:1.85;}
.timeline-card__meta{margin-top:14px;display:flex;flex-wrap:wrap;gap:8px;}

/* ============ 数据条 ============ */
.stats{
  background:var(--dark);border-radius:20px;padding:44px 40px;
  position:relative;overflow:hidden;
}
.stats__grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative;z-index:1;}
.stats__num{
  font-size:clamp(30px,4vw,44px);font-weight:700;color:#4ED2B8;
  font-variant-numeric:tabular-nums;line-height:1.1;
}
.stats__num small{font-size:16px;font-weight:600;margin-left:4px;}
.stats__label{font-size:14px;color:rgba(255,255,255,.72);margin-top:10px;}

/* ============ 场景图文 ============ */
.scene-list{display:flex;flex-direction:column;gap:20px;margin-top:8px;}
.scene-item{
  display:flex;gap:16px;background:var(--card);border:1px solid var(--border);
  border-radius:var(--radius);padding:20px 22px;box-shadow:var(--shadow);
  transition:box-shadow .2s ease,transform .2s ease;
}
.scene-item:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px);}
.scene-item__num{
  font-size:26px;font-weight:300;color:var(--primary);line-height:1;
  font-variant-numeric:tabular-nums;min-width:38px;
}
.scene-item h3{font-size:18px;font-weight:600;margin-bottom:6px;}
.scene-item p{font-size:15px;color:var(--muted);line-height:1.8;}
.scene-figure{
  border-radius:16px;overflow:hidden;box-shadow:0 14px 34px rgba(18,48,74,.14);
  background:#E8EEF5;
}
.scene-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;}

/* ============ 清单 ============ */
.checklist{
  display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-top:36px;
}
.check-item{
  display:flex;gap:12px;align-items:flex-start;
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  padding:18px 20px;box-shadow:var(--shadow);
  transition:box-shadow .2s ease,transform .2s ease;
}
.check-item:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px);}
.check-item i{color:var(--mint);font-size:16px;margin-top:4px;}
.check-item span{font-size:15px;color:var(--text);line-height:1.75;}

/* ============ FAQ ============ */
.faq-aside p{font-size:15px;color:var(--muted);line-height:1.85;margin-top:12px;}
.faq-list{display:flex;flex-direction:column;gap:12px;}
.faq-item{
  background:var(--card);border:1px solid var(--border);border-left:3px solid var(--border);
  border-radius:12px;box-shadow:var(--shadow);overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item:hover{box-shadow:var(--shadow-hover);}
.faq-item[open]{border-left-color:var(--primary);}
.faq-item summary{
  list-style:none;cursor:pointer;position:relative;
  padding:18px 52px 18px 22px;
  font-size:17px;font-weight:600;color:var(--dark);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);
  font-size:20px;font-weight:400;color:var(--primary);line-height:1;
}
.faq-item[open] summary::after{content:"−";}
.faq-answer{padding:0 22px 20px;border-top:1px solid #EEF3F8;}
.faq-answer p{font-size:15px;color:var(--muted);line-height:1.9;padding-top:16px;}

/* ============ CTA ============ */
.cta-band{
  position:relative;border-radius:20px;overflow:hidden;
  background-image:linear-gradient(90deg,rgba(18,48,74,.92),rgba(18,48,74,.74)),url('/assets/images/backpic/back-3.webp');
  background-size:cover;background-position:center;
  padding:48px 44px;
}
.cta-band__inner{
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  position:relative;z-index:1;
}
.cta-band h2{color:#fff;font-size:clamp(22px,2.2vw,30px);margin-bottom:10px;}
.cta-band p{color:rgba(255,255,255,.76);font-size:15.5px;max-width:620px;line-height:1.85;}
.cta-band__actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ============ 页脚 ============ */
.site-footer{background:var(--dark);color:rgba(255,255,255,.78);margin-top:72px;}
.footer-top{padding:56px 0 42px;}
.footer-brand__top{display:block;font-size:18px;font-weight:700;color:#fff;letter-spacing:.4px;}
.footer-brand__bottom{display:block;font-size:12px;font-weight:600;letter-spacing:.4em;color:#7FB6E4;margin-top:3px;}
.footer-desc{font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);margin-top:16px;}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;}
.footer-links a{
  display:block;font-size:14px;color:rgba(255,255,255,.72);
  padding:6px 0;transition:color .2s ease,box-shadow .2s ease,padding-left .2s ease;
}
.footer-links a:hover{color:#fff;padding-left:10px;box-shadow:inset 2px 0 0 var(--accent);}
.footer-contact p{font-size:14px;color:rgba(255,255,255,.72);margin-bottom:8px;}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:20px 0;}
.footer-bottom__inner{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;}
.footer-bottom p{font-size:13px;color:rgba(255,255,255,.55);}

/* ============ Foundation 覆盖 ============ */
.grid-x{margin-left:-12px;margin-right:-12px;}
.grid-x>.cell{padding-left:12px;padding-right:12px;}
.grid-margin-x{margin-left:-12px;margin-right:-12px;}
.grid-margin-x>.cell{padding-left:12px;padding-right:12px;}
details{display:block;}

/* ============ 响应式 ============ */
@media screen and (max-width:1199px){
  :root{--sidebar-w:200px;}
  .site-sidebar{padding:24px 16px 20px;}
  .brand-logo__top{font-size:17px;}
  .nav-item{font-size:14.5px;}
}
@media screen and (max-width:1023px){
  body{padding-left:0;padding-top:56px;}
  .mobile-bar{display:flex;}
  .site-sidebar{
    width:280px;max-width:82vw;padding-top:24px;
    transform:translateX(-100%);
    transition:transform .24s ease-out;
    box-shadow:0 0 40px rgba(18,48,74,.18);
  }
  .site-sidebar.is-open{transform:translateX(0);}
  .sidebar-mask.is-open{display:block;opacity:1;visibility:visible;}
  .sidebar-contact{margin-top:24px;}
  .site-main{padding:0 24px;}
  .container{padding:0 24px;}
  .section{padding:48px 0;}
  .hero{padding:44px 0 40px;}
  .hero__media{margin-top:32px;}
  .hero__media img{aspect-ratio:16/9;}
  .cta-band{padding:36px 28px;}
  .stats{padding:34px 28px;}
}
@media screen and (max-width:768px){
  .site-main{padding:0 18px;}
  .container{padding:0 18px;}
  .section{padding:40px 0;}
  .hero__copy h1{font-size:29px;}
  .hero__subtitle{font-size:16.5px;}
  .trust-bar{grid-template-columns:1fr;gap:0;}
  .trust-bar__item{
    border-left:0;padding:14px 0;border-top:1px solid var(--border);
  }
  .trust-bar__item:first-child{border-top:0;padding-top:0;}
  .stats__grid{grid-template-columns:repeat(2,1fr);gap:22px;}
  .checklist{grid-template-columns:1fr;}
  .timeline{padding-left:26px;}
  .timeline-item::before{left:-26px;top:22px;width:14px;height:14px;border-width:3px;}
  .timeline::before{left:6px;}
  .timeline-card{padding:20px 20px;}
  .timeline-card h3{font-size:18px;}
  .scene-item{padding:18px;}
  .cta-band__inner{flex-direction:column;align-items:flex-start;}
  .cta-band__actions{width:100%;}
  .cta-band__actions .btn{flex:1 1 auto;}
  .footer-top{padding:40px 0 30px;}
}
@media screen and (max-width:520px){
  body{font-size:15.5px;}
  .site-main{padding:0 14px;}
  .container{padding:0 14px;}
  .hero{padding:34px 0 32px;}
  .hero__copy h1{font-size:25px;}
  .hero__actions .btn{width:100%;}
  .section-head h2{font-size:22px;}
  .timeline-card{padding:18px 16px;}
  .stats{border-radius:16px;padding:28px 20px;}
  .stats__num{font-size:28px;}
  .faq-item summary{padding:16px 44px 16px 16px;font-size:15.5px;}
  .faq-answer{padding:0 16px 16px;}
  .cta-band{padding:28px 20px;border-radius:16px;}
  .cta-band__actions .btn{width:100%;}
}

/* roulang page: category3 */
:root{
  --brand:#1F6FB2;
  --brand-dark:#175a92;
  --brand-soft:rgba(31,111,178,.08);
  --dark:#12304A;
  --accent:#E8762C;
  --mint:#17A08A;
  --bg:#F4F7FB;
  --card:#FFFFFF;
  --border:#E3EAF2;
  --text:#2A3B4A;
  --muted:#6B7C8C;
  --radius:14px;
  --radius-sm:10px;
  --shadow:0 4px 20px rgba(18,48,74,.07);
  --shadow-lg:0 14px 32px rgba(18,48,74,.13);
  --sidebar:240px;
}
@media (min-width:1024px) and (max-width:1199px){
  :root{--sidebar:200px;}
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease,background-color .2s ease;}
a:hover{color:var(--brand-dark);}
h1,h2,h3,h4{margin:0;color:var(--dark);font-weight:700;line-height:1.3;}
p{margin:0 0 14px;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
button{font:inherit;}
:focus-visible{outline:3px solid rgba(31,111,178,.35);outline-offset:2px;border-radius:6px;}

.grid-x.grid-margin-x{margin-left:-12px;margin-right:-12px;}
.grid-x.grid-margin-x>.cell{width:calc(100% - 24px);margin-left:12px;margin-right:12px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}

/* ---------- 侧栏 ---------- */
.site-sidebar{
  position:fixed;top:0;left:0;bottom:0;
  width:var(--sidebar);
  background:#fff;
  border-right:1px solid var(--border);
  padding:26px 18px 24px;
  display:flex;flex-direction:column;gap:24px;
  overflow-y:auto;
  z-index:70;
}
.sidebar-brand{display:block;padding:0 8px 18px;border-bottom:1px solid var(--border);}
.sidebar-brand__top{display:block;font-size:19px;font-weight:700;color:var(--dark);letter-spacing:.6px;line-height:1.35;}
.sidebar-brand__bottom{display:block;font-size:13px;font-weight:600;letter-spacing:5px;color:var(--brand);margin-top:3px;}
.sidebar-brand__note{display:block;font-size:12px;color:var(--muted);margin-top:10px;letter-spacing:.3px;}
.sidebar-nav{display:flex;flex-direction:column;gap:4px;}
.nav-item{
  position:relative;
  display:flex;align-items:center;
  height:44px;padding:0 14px 0 16px;
  border-radius:var(--radius-sm);
  font-size:15px;color:var(--text);
  transition:background-color .2s ease,color .2s ease;
}
.nav-item:hover{background:var(--bg);color:var(--brand);}
.nav-item.is-active{background:var(--brand-soft);color:var(--brand);font-weight:600;}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;
  border-radius:0 3px 3px 0;background:var(--brand);
}
.sidebar-foot{margin-top:auto;padding:18px 14px;background:var(--bg);border-radius:var(--radius);}
.sidebar-foot h4{font-size:14px;margin-bottom:8px;}
.sidebar-foot p{font-size:13px;color:var(--muted);margin:0 0 4px;line-height:1.7;}
.sidebar-foot .btn{width:100%;margin-top:12px;justify-content:center;}

/* ---------- 移动端顶栏 ---------- */
.mobile-topbar{
  display:none;
  position:fixed;top:0;left:0;right:0;height:56px;
  background:#fff;border-bottom:1px solid var(--border);
  box-shadow:0 2px 10px rgba(18,48,74,.06);
  align-items:center;justify-content:space-between;
  padding:0 16px;z-index:80;
}
.mobile-topbar__brand{font-size:16px;font-weight:700;color:var(--dark);letter-spacing:.4px;}
.mobile-topbar__toggle{
  width:40px;height:40px;border:1px solid var(--border);border-radius:10px;
  background:#fff;color:var(--dark);display:flex;align-items:center;justify-content:center;
  font-size:16px;cursor:pointer;transition:background-color .2s ease,color .2s ease;
}
.mobile-topbar__toggle:hover{background:var(--brand-soft);color:var(--brand);}
.nav-overlay{
  display:none;position:fixed;inset:0;background:rgba(18,48,74,.45);
  opacity:0;transition:opacity .24s ease-out;z-index:65;
}
.nav-overlay.is-visible{display:block;opacity:1;}

/* ---------- 主内容 ---------- */
.site-main-wrap{margin-left:var(--sidebar);min-height:100vh;display:flex;flex-direction:column;}
main{flex:1 0 auto;}
.section{padding:76px 0;}
.section--tight{padding:56px 0;}
.section--alt{background:#fff;}
.section-head{max-width:760px;margin-bottom:36px;}
.section-head h2{font-size:clamp(24px,2.4vw,34px);margin-bottom:12px;}
.section-head p{color:var(--muted);margin:0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:1.4px;color:var(--brand);
  background:var(--brand-soft);border-radius:999px;padding:5px 14px;margin-bottom:16px;
}

/* ---------- 页头 ---------- */
.page-hero{
  position:relative;
  padding:70px 0 64px;
  background:#0F2A42 url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
  overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(105deg,rgba(15,42,66,.94) 0%,rgba(15,42,66,.82) 52%,rgba(15,42,66,.58) 100%);
}
.page-hero .container{position:relative;z-index:2;}
.crumb{font-size:12px;color:rgba(255,255,255,.68);margin-bottom:18px;letter-spacing:.4px;}
.crumb a{color:rgba(255,255,255,.78);}
.crumb a:hover{color:#fff;}
.crumb span.sep{margin:0 8px;opacity:.6;}
.page-hero h1{
  color:#fff;
  font-size:clamp(30px,3.6vw,46px);
  line-height:1.22;
  margin-bottom:18px;
}
.page-hero__lead{
  color:rgba(255,255,255,.86);
  font-size:17px;line-height:1.8;
  max-width:620px;margin-bottom:26px;
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px;}
.hero-tag{
  font-size:12.5px;color:#fff;
  border:1px solid rgba(255,255,255,.32);
  border-radius:999px;padding:5px 14px;
  background:rgba(255,255,255,.08);
  backdrop-filter:blur(2px);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}
.hero-media{
  border-radius:16px;overflow:hidden;
  border:1px solid rgba(255,255,255,.18);
  box-shadow:0 20px 44px rgba(6,20,34,.4);
  background:rgba(255,255,255,.06);
}
.hero-media img{width:100%;aspect-ratio:16/10;object-fit:cover;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:13px 26px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;line-height:1.2;
  border:1.5px solid transparent;cursor:pointer;
  transition:background-color .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.btn i{font-size:14px;}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 6px 18px rgba(232,118,44,.28);}
.btn-primary:hover{background:#d96a22;color:#fff;transform:translateY(-1px);box-shadow:0 10px 24px rgba(232,118,44,.34);}
.btn-outline{background:transparent;border-color:var(--brand);color:var(--brand);}
.btn-outline:hover{background:var(--brand-soft);color:var(--brand-dark);}
.btn-ghost{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.55);color:#fff;}
.btn-ghost:hover{background:rgba(255,255,255,.2);color:#fff;transform:translateY(-1px);}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--brand);}
.link-arrow i{transition:transform .2s ease;}
.link-arrow:hover i{transform:translateX(3px);}

/* ---------- 筛选标签 ---------- */
.filter-row{
  display:flex;flex-wrap:wrap;gap:10px;
  padding-bottom:28px;margin-bottom:34px;
  border-bottom:1px solid var(--border);
}
.filter-chip{
  font-size:13.5px;font-weight:600;color:var(--muted);
  background:#fff;border:1px solid var(--border);
  border-radius:999px;padding:8px 18px;
  transition:all .2s ease;
}
.filter-chip.is-active{background:var(--brand);border-color:var(--brand);color:#fff;box-shadow:0 6px 16px rgba(31,111,178,.22);}

/* ---------- 卡片 ---------- */
.card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  padding:26px 24px;
  height:100%;
  display:flex;flex-direction:column;
  transition:box-shadow .2s ease,transform .2s ease;
}
.card:hover{box-shadow:var(--shadow-lg);transform:translateY(-3px);}
.card__icon{
  width:46px;height:46px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:var(--brand-soft);color:var(--brand);
  font-size:18px;margin-bottom:16px;
}
.card__icon--mint{background:rgba(23,160,138,.1);color:var(--mint);}
.card__icon--accent{background:rgba(232,118,44,.1);color:var(--accent);}
.card h3{font-size:18px;margin-bottom:10px;}
.card p{font-size:14.5px;color:var(--muted);line-height:1.8;}
.badge{
  display:inline-flex;align-items:center;
  height:24px;padding:0 12px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.3px;
  background:var(--brand-soft);color:var(--brand);
  margin-bottom:14px;align-self:flex-start;
}
.badge--mint{background:rgba(23,160,138,.1);color:var(--mint);}
.badge--accent{background:rgba(232,118,44,.1);color:var(--accent);}
.card__foot{margin-top:auto;padding-top:16px;border-top:1px solid var(--border);font-size:13px;color:var(--muted);}

/* ---------- 数据条 ---------- */
.stats-band{background:var(--dark);border-radius:18px;padding:44px 32px;position:relative;overflow:hidden;}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;text-align:center;}
.stat__num{
  font-size:clamp(34px,3.4vw,46px);font-weight:700;color:var(--mint);
  line-height:1.1;font-variant-numeric:tabular-nums;letter-spacing:.5px;
}
.stat__num--accent{color:var(--accent);}
.stat__label{font-size:14px;color:rgba(255,255,255,.66);margin-top:8px;}

/* ---------- 图文 / 清单 ---------- */
.figure-block{border-radius:var(--radius);overflow:hidden;border:1px solid var(--border);box-shadow:var(--shadow);background:#fff;}
.figure-block img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.figure-block figcaption{font-size:13px;color:var(--muted);padding:14px 18px;background:#fff;border-top:1px solid var(--border);}
.check-list{display:flex;flex-direction:column;gap:16px;}
.check-item{display:flex;gap:16px;align-items:flex-start;background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:20px 22px;box-shadow:var(--shadow);transition:box-shadow .2s ease,transform .2s ease;}
.check-item:hover{box-shadow:var(--shadow-lg);transform:translateY(-3px);}
.check-item__num{
  font-size:22px;font-weight:300;color:var(--brand);
  line-height:1;font-variant-numeric:tabular-nums;min-width:30px;padding-top:4px;
}
.check-item h3{font-size:17px;margin-bottom:6px;}
.check-item p{font-size:14.5px;color:var(--muted);margin:0;line-height:1.8;}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;}
.faq-item{
  background:#fff;border:1px solid var(--border);border-radius:12px;
  box-shadow:var(--shadow);overflow:hidden;transition:box-shadow .2s ease;
}
.faq-item[open]{box-shadow:var(--shadow-lg);}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;justify-content:space-between;align-items:center;gap:16px;
  padding:18px 22px;font-size:17px;font-weight:600;color:var(--dark);
  position:relative;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"\2b";font-family:"Font Awesome 6 Free";font-weight:900;
  color:var(--brand);font-size:14px;flex:0 0 auto;transition:transform .2s ease;
}
.faq-item[open] summary::after{content:"\f068";}
.faq-item[open] summary{border-left:3px solid var(--brand);padding-left:19px;}
.faq-item__body{padding:0 22px 20px;font-size:15px;color:var(--muted);line-height:1.85;}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--dark);
  border-radius:20px;
  padding:56px 44px;
  color:#fff;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.5) 1px,transparent 1px);
  background-size:20px 20px;opacity:.08;pointer-events:none;
}
.cta-band__inner{position:relative;z-index:2;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;}
.cta-band h2{color:#fff;font-size:clamp(22px,2.2vw,30px);margin-bottom:10px;}
.cta-band p{color:rgba(255,255,255,.76);margin:0;font-size:15px;max-width:560px;}
.cta-band__actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:rgba(255,255,255,.72);margin-top:auto;}
.footer-top{padding:60px 0 44px;}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:600;}
.footer-brand{margin-bottom:14px;}
.footer-brand__top{display:block;font-size:19px;font-weight:700;color:#fff;letter-spacing:.6px;line-height:1.35;}
.footer-brand__bottom{display:block;font-size:13px;font-weight:600;letter-spacing:5px;color:var(--accent);margin-top:3px;}
.footer-desc{font-size:14px;line-height:1.8;color:rgba(255,255,255,.66);margin:0;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{
  font-size:14px;color:rgba(255,255,255,.72);
  padding-left:0;border-left:2px solid transparent;
  transition:color .2s ease,border-color .2s ease,padding-left .2s ease;
}
.footer-links a:hover{color:#fff;border-left-color:var(--accent);padding-left:8px;}
.footer-contact p{font-size:14px;margin:0 0 8px;color:rgba(255,255,255,.72);}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:18px 0;}
.footer-bottom__inner{display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;font-size:13px;color:rgba(255,255,255,.55);}
.footer-bottom__inner p{margin:0;}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .site-sidebar{
    width:286px;transform:translateX(-100%);
    transition:transform .24s ease-out;
    box-shadow:0 0 44px rgba(18,48,74,.24);border-right:none;
    padding-top:22px;
  }
  .site-sidebar.is-open{transform:none;}
  .site-main-wrap{margin-left:0;padding-top:56px;}
  .mobile-topbar{display:flex;}
  .nav-item{height:52px;border-bottom:1px solid #EEF3F8;border-radius:0;}
  .nav-item.is-active{border-radius:0;}
  .sidebar-brand{padding-bottom:16px;}
  .section{padding:52px 0;}
  .page-hero{padding:46px 0 42px;}
  .cta-band{padding:40px 26px;}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:26px 16px;}
  .hero-media{margin-top:28px;}
}
@media (max-width:768px){
  body{font-size:15.5px;}
  .container{padding:0 18px;}
  .section{padding:44px 0;}
  .grid-x.grid-margin-x>.cell{width:calc(100% - 24px);}
  .page-hero h1{font-size:26px;}
  .page-hero__lead{font-size:15.5px;}
  .card{padding:22px 20px;}
  .faq-item summary{font-size:16px;padding:16px 18px;}
  .faq-item[open] summary{padding-left:15px;}
  .cta-band__actions .btn{flex:1 1 auto;justify-content:center;}
}
@media (max-width:520px){
  .container{padding:0 14px;}
  .hero-actions .btn{width:100%;justify-content:center;}
  .filter-row{gap:8px;}
  .filter-chip{padding:7px 14px;font-size:13px;}
  .stats-band{padding:32px 18px;border-radius:14px;}
  .stat__label{font-size:13px;}
  .footer-bottom__inner{flex-direction:column;}
}