/* roulang page: index */
:root{
  --brand:#1E5AA8;
  --brand-700:#164A8C;
  --brand-050:#EAF1FA;
  --accent:#0FA383;
  --warm:#F2833A;
  --bg:#F5F7FB;
  --card:#FFFFFF;
  --line:#E4EAF3;
  --title:#121A24;
  --text:#3D4A5C;
  --muted:#6B7A8D;
  --dark:#0E2B4F;
  --r-card:16px;
  --r-btn:10px;
  --r-img:12px;
  --shadow-1:0 1px 2px rgba(18,26,36,.06),0 8px 24px rgba(30,90,168,.06);
  --shadow-2:0 2px 4px rgba(18,26,36,.06),0 14px 32px rgba(30,90,168,.12);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  padding-bottom:0;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-style:none}
a{color:var(--brand);text-decoration:none;transition:color .16s ease,background-color .16s ease}
a:hover{color:var(--brand-700)}
h1,h2,h3,h4,h5{color:var(--title);margin:0;font-weight:700;line-height:1.3}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;
}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (min-width:1200px){.container{max-width:1280px;padding:0 32px}}
.section{padding:56px 0}
@media (min-width:992px){.section{padding:96px 0}}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1030;
  background:transparent;border-bottom:1px solid transparent;
  transition:background-color .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.96);
  border-bottom-color:var(--line);
  box-shadow:0 1px 2px rgba(18,26,36,.05);
  -webkit-backdrop-filter:saturate(180%) blur(10px);
  backdrop-filter:saturate(180%) blur(10px);
}
.nav-wrap{display:flex;align-items:center;gap:20px;min-height:72px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--title);font-weight:700;font-size:17px;letter-spacing:.01em}
.brand:hover{color:var(--title)}
.brand-mark{
  width:36px;height:36px;border-radius:11px;
  background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center;
  font-size:16px;box-shadow:0 6px 16px rgba(30,90,168,.28);
}
.brand-text{white-space:nowrap}
.nav-menu{display:none;align-items:center;gap:4px;margin:0 0 0 auto}
.nav-menu a{
  display:block;padding:8px 12px;font-size:15px;color:var(--text);font-weight:500;border-radius:8px;
  position:relative;line-height:1.4;
}
.nav-menu a:hover{color:var(--brand);background:var(--brand-050)}
.nav-menu a.active{color:var(--brand);font-weight:600}
.nav-menu a.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:0;height:2px;border-radius:2px;background:var(--brand);
}
.nav-cta{display:none;margin-left:12px;flex:0 0 auto}
.nav-toggle{
  margin-left:auto;width:44px;height:44px;border-radius:10px;border:1px solid var(--line);
  background:#fff;color:var(--title);font-size:18px;display:flex;align-items:center;justify-content:center;
  cursor:pointer;transition:background-color .16s ease,border-color .16s ease;
}
.nav-toggle:hover{background:var(--brand-050);border-color:var(--brand)}
@media (min-width:992px){
  .nav-menu{display:flex}
  .nav-cta{display:block}
  .nav-toggle{display:none}
}
.mobile-drawer{
  display:none;background:#fff;border-top:1px solid var(--line);
  box-shadow:0 12px 28px rgba(18,26,36,.08);
}
.mobile-drawer.open{display:block}
.mobile-drawer ul{padding:10px 24px 20px}
.mobile-drawer a{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 4px;font-size:16px;color:var(--text);border-bottom:1px solid var(--line);
}
.mobile-drawer a:last-child{border-bottom:none}
.mobile-drawer a.active{color:var(--brand);font-weight:600}
.mobile-drawer a i{color:var(--muted);font-size:13px}

/* ---------- 按钮 ---------- */
.btn-brand,.btn-ghost,.btn-warm{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:11px 22px;font-size:15px;font-weight:600;
  border-radius:var(--r-btn);cursor:pointer;border:1px solid transparent;
  transition:background-color .16s ease,color .16s ease,border-color .16s ease,transform .16s ease,box-shadow .16s ease;
}
.btn-brand{background:var(--brand);border-color:var(--brand);color:#fff;box-shadow:0 6px 16px rgba(30,90,168,.20)}
.btn-brand:hover{background:var(--brand-700);border-color:var(--brand-700);color:#fff;transform:translateY(-1px)}
.btn-brand:active{transform:translateY(0)}
.btn-ghost{background:#fff;border-color:var(--brand);color:var(--brand)}
.btn-ghost:hover{background:var(--brand-050);color:var(--brand-700)}
.btn-warm{background:var(--warm);border-color:var(--warm);color:#fff}
.btn-warm:hover{background:#dd7228;border-color:#dd7228;color:#fff;transform:translateY(-1px)}
.btn-text{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--brand)}
.btn-text i{transition:transform .16s ease}
.btn-text:hover i{transform:translateX(3px)}
.btn-block{width:100%}

/* ---------- 标签 / 徽章 ---------- */
.tag{
  display:inline-block;font-size:12px;font-weight:500;letter-spacing:.02em;
  padding:4px 12px;border-radius:999px;background:var(--brand-050);color:var(--brand);
}
.tag-accent{background:rgba(15,163,131,.10);color:var(--accent)}
.tag-warm{background:rgba(242,131,58,.12);color:#c96418}
.tag-outline{background:#fff;border:1px solid var(--line);color:var(--muted)}

/* ---------- 板块标题 ---------- */
.sec-head{max-width:760px;margin-bottom:28px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.sec-head .tag{margin-bottom:14px}
.sec-title{font-size:24px;position:relative;padding-left:16px;line-height:1.35}
.sec-title::before{
  content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:3px;border-radius:2px;background:var(--brand);
}
.sec-head.center .sec-title{padding-left:0}
.sec-head.center .sec-title::before{display:none}
.sec-desc{margin-top:12px;font-size:15px;color:var(--muted);max-width:640px}
.sec-head.center .sec-desc{margin-left:auto;margin-right:auto}
@media (min-width:992px){
  .sec-title{font-size:30px}
  .sec-desc{font-size:16px}
}
.sec-row{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:28px}
.sec-row .sec-head{margin-bottom:0}

/* ---------- Hero ---------- */
.hero{
  position:relative;padding:118px 0 56px;overflow:hidden;
  background:linear-gradient(180deg,#FFFFFF 0%,var(--bg) 100%);
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(30,90,168,.10) 1px,transparent 1px);
  background-size:22px 22px;
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 72%);
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 72%);
  pointer-events:none;
}
.hero .container{position:relative;z-index:1}
.hero-grid{display:grid;grid-template-columns:1fr;gap:36px;align-items:center}
@media (min-width:992px){
  .hero{padding:168px 0 88px}
  .hero-grid{grid-template-columns:1.05fr .95fr;gap:56px}
}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:500;letter-spacing:.02em;
  color:var(--brand);background:#fff;border:1px solid var(--line);border-radius:999px;padding:5px 14px;
  box-shadow:0 1px 2px rgba(18,26,36,.04);
}
.hero-eyebrow i{color:var(--accent)}
.hero h1{font-size:28px;line-height:1.36;margin:18px 0 16px}
@media (min-width:992px){.hero h1{font-size:40px;line-height:1.28}}
.hero-sub{font-size:16px;color:var(--text);max-width:520px;margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:28px}
.trust-list{display:flex;flex-wrap:wrap;gap:10px 22px}
.trust-list li{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text);font-weight:500}
.trust-list i{color:var(--accent);font-size:14px}
.hero-visual{
  position:relative;border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--shadow-1);border:1px solid var(--line);background:#fff;
}
.hero-visual img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3}
.hero-visual::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(255,255,255,.92) 0%,rgba(255,255,255,.62) 34%,rgba(255,255,255,0) 62%);
}
.hero-badge{
  position:absolute;left:20px;bottom:20px;z-index:2;
  background:#fff;border:1px solid var(--line);border-radius:14px;padding:12px 16px;
  box-shadow:var(--shadow-1);min-width:150px;
}
.hero-badge b{display:block;font-size:22px;font-weight:700;color:var(--brand);font-variant-numeric:tabular-nums;line-height:1.2}
.hero-badge span{font-size:13px;color:var(--muted)}

/* ---------- 卡片通用 ---------- */
.card-base{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-1);padding:24px;
  transition:box-shadow .2s ease,transform .2s ease,border-color .2s ease;
}
.card-base:hover{box-shadow:var(--shadow-2);border-color:#d6e1f0}
.feature-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-1);padding:24px;height:100%;
  transition:box-shadow .2s ease,transform .2s ease;
}
.feature-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px)}
.icon-box{
  width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:var(--brand-050);color:var(--brand);font-size:17px;margin-bottom:16px;
}
.icon-box.accent{background:rgba(15,163,131,.10);color:var(--accent)}
.feature-card h3{font-size:18px;margin-bottom:8px;font-weight:600}
.feature-card p{font-size:14.5px;color:var(--muted);margin:0;line-height:1.7}
.feature-wide{overflow:hidden;padding:0;display:flex;flex-direction:column}
.feature-wide img{width:100%;aspect-ratio:16/9;object-fit:cover}
.feature-wide .fw-body{padding:24px}
.feature-strip{
  display:flex;align-items:center;gap:18px;flex-wrap:wrap;
  background:var(--brand-050);border:1px solid #d6e3f5;border-radius:var(--r-card);
  padding:20px 24px;height:100%;
}
.feature-strip .icon-box{margin:0;background:#fff}
.feature-strip h3{font-size:17px;margin-bottom:4px}
.feature-strip p{margin:0;font-size:14.5px;color:var(--text)}
.feature-strip .strip-link{margin-left:auto}

/* ---------- 流程步骤 ---------- */
.steps{display:grid;grid-template-columns:1fr;gap:20px;counter-reset:step}
@media (min-width:768px){.steps{grid-template-columns:repeat(2,1fr)}}
@media (min-width:992px){.steps{grid-template-columns:repeat(4,1fr)}}
.step{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 22px 22px;box-shadow:var(--shadow-1);
}
.step::before{
  counter-increment:step;content:"0" counter(step);
  display:flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:50%;background:var(--brand);color:#fff;
  font-size:14px;font-weight:700;font-variant-numeric:tabular-nums;margin-bottom:16px;
}
.step.done::before{background:var(--accent)}
.step h3{font-size:17px;font-weight:600;margin-bottom:8px}
.step p{font-size:14px;color:var(--muted);margin:0}
.step .step-line{
  position:absolute;top:45px;right:-10px;width:20px;height:2px;background:var(--line);display:none;
}
@media (min-width:992px){
  .step .step-line{display:block}
  .steps .step:last-child .step-line{display:none}
}

/* ---------- 案例 ---------- */
.case-main{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--shadow-1);height:100%;
}
.case-main img{width:100%;aspect-ratio:16/9;object-fit:cover}
.case-main .case-body{padding:26px}
.case-main h3{font-size:20px;margin-bottom:10px}
.case-main p{font-size:15px;color:var(--muted)}
.case-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:22px;padding-top:22px;border-top:1px solid var(--line)}
.case-stats b{display:block;font-size:22px;font-weight:700;color:var(--accent);font-variant-numeric:tabular-nums;line-height:1.2}
.case-stats span{font-size:12.5px;color:var(--muted);display:block;margin-top:2px}
.case-small{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:22px;height:100%;
  box-shadow:var(--shadow-1);transition:box-shadow .2s ease,transform .2s ease;
}
.case-small:hover{box-shadow:var(--shadow-2);transform:translateY(-2px)}
.case-small h4{font-size:16.5px;font-weight:600;margin:14px 0 8px}
.case-small p{font-size:14px;color:var(--muted);margin:0}
.case-quote{
  border-left:3px solid var(--brand);background:var(--brand-050);border-radius:0 var(--r-img) var(--r-img) 0;
  padding:16px 20px;font-size:14.5px;color:var(--text);margin-top:16px;
}

/* ---------- 服务方案 ---------- */
.plan{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:28px 24px;height:100%;
  box-shadow:var(--shadow-1);display:flex;flex-direction:column;position:relative;
  transition:box-shadow .2s ease,transform .2s ease;
}
.plan:hover{box-shadow:var(--shadow-2);transform:translateY(-2px)}
.plan.featured{border:2px solid var(--brand);box-shadow:0 2px 4px rgba(18,26,36,.05),0 18px 40px rgba(30,90,168,.14)}
.plan-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:6px}
.plan h3{font-size:19px;font-weight:700}
.plan .plan-note{font-size:13.5px;color:var(--muted);margin-bottom:18px}
.plan .plan-price{font-size:26px;font-weight:700;color:var(--title);font-variant-numeric:tabular-nums;margin-bottom:6px}
.plan .plan-price small{font-size:13px;font-weight:500;color:var(--muted);margin-left:4px}
.plan ul{display:grid;gap:12px;margin:18px 0 26px;padding-top:18px;border-top:1px solid var(--line)}
.plan li{display:flex;gap:10px;font-size:14.5px;color:var(--text);line-height:1.6}
.plan li i{color:var(--accent);font-size:13px;margin-top:6px;flex:0 0 auto}
.plan .plan-action{margin-top:auto}

/* ---------- 最新信息 ---------- */
.post-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--shadow-1);height:100%;display:flex;flex-direction:column;
  transition:box-shadow .2s ease,transform .2s ease,border-color .2s ease;
}
.post-card:hover{box-shadow:var(--shadow-2);transform:translateY(-3px);border-color:#d6e1f0}
.post-thumb{display:block;overflow:hidden}
.post-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .35s ease}
.post-card:hover .post-thumb img{transform:scale(1.03)}
.post-body{padding:22px;display:flex;flex-direction:column;flex:1 1 auto}
.post-meta{display:flex;align-items:center;gap:10px;margin-bottom:12px;flex-wrap:wrap}
.post-meta time{font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums}
.post-card h3{font-size:16.5px;font-weight:600;line-height:1.5;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-card h3 a{color:var(--title)}
.post-card h3 a:hover{color:var(--brand)}
.post-card p{
  font-size:14px;color:var(--muted);margin-bottom:16px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.post-card .post-more{margin-top:auto;font-size:14px}
.post-card--lead .post-thumb img{aspect-ratio:16/10}
.post-card--lead h3{font-size:20px;-webkit-line-clamp:2}
.post-card--lead p{-webkit-line-clamp:3;font-size:14.5px}
.post-mini{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:20px;height:100%;box-shadow:var(--shadow-1);transition:box-shadow .2s ease,transform .2s ease}
.post-mini:hover{box-shadow:var(--shadow-2);transform:translateY(-2px)}
.post-mini h4{font-size:15.5px;font-weight:600;line-height:1.5;margin:10px 0 0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-mini h4 a{color:var(--title)}
.post-mini h4 a:hover{color:var(--brand)}
.empty-state{
  background:#fff;border:1px dashed #cddcef;border-radius:var(--r-card);
  padding:52px 24px;text-align:center;box-shadow:var(--shadow-1);
}
.empty-state i{font-size:30px;color:var(--brand);opacity:.55;display:block;margin-bottom:14px}
.empty-state p{font-size:15px;color:var(--muted);margin-bottom:18px}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:14px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow-1);overflow:hidden}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;padding:16px 22px;background:transparent;border:none;text-align:left;
  font-size:16px;font-weight:600;color:var(--title);cursor:pointer;line-height:1.5;
  transition:color .16s ease;
}
.faq-q:hover{color:var(--brand)}
.faq-item.open .faq-q{color:var(--brand)}
.faq-q .faq-ico{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;background:var(--brand-050);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-size:12px;transition:transform .22s ease,background-color .16s ease;
}
.faq-item.open .faq-ico{transform:rotate(180deg);background:var(--brand);color:#fff}
.faq-a{display:none;padding:0 22px 20px;font-size:14.5px;color:var(--muted);line-height:1.8}
.faq-item.open .faq-a{display:block}

/* ---------- 结尾 CTA ---------- */
.cta-band{
  background:var(--dark);
  background-image:linear-gradient(120deg,rgba(255,255,255,.06) 0%,rgba(255,255,255,0) 55%);
  border-radius:var(--r-card);padding:40px 28px;color:#fff;
  display:flex;flex-direction:column;gap:24px;
}
@media (min-width:992px){
  .cta-band{padding:52px 48px;flex-direction:row;align-items:center;justify-content:space-between}
}
.cta-band h2{color:#fff;font-size:24px;margin-bottom:10px}
@media (min-width:992px){.cta-band h2{font-size:28px}}
.cta-band p{color:rgba(255,255,255,.78);font-size:15px;margin:0;max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;flex:0 0 auto}
.cta-band .btn-ghost{background:transparent;border-color:rgba(255,255,255,.4);color:#fff}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:rgba(255,255,255,.72);margin-top:56px;padding:56px 0 0}
@media (min-width:992px){.site-footer{margin-top:88px;padding-top:72px}}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media (min-width:768px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr}}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:17px;margin-bottom:14px}
.footer-brand .brand-mark{background:rgba(255,255,255,.14);box-shadow:none}
.site-footer p{font-size:14px;color:rgba(255,255,255,.62);line-height:1.8}
.site-footer h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;letter-spacing:.02em}
.footer-links{display:grid;gap:11px}
.footer-links a{font-size:14px;color:rgba(255,255,255,.72)}
.footer-links a:hover{color:#fff;text-decoration:underline}
.footer-contact{display:grid;gap:12px}
.footer-contact li{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:rgba(255,255,255,.72)}
.footer-contact i{color:var(--accent);margin-top:4px;font-size:13px}
.footer-bottom{
  margin-top:44px;border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 92px;display:flex;flex-wrap:wrap;gap:10px 20px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.5);
}
@media (min-width:992px){.footer-bottom{padding-bottom:24px}}

/* ---------- 移动端底部 Tab ---------- */
.tab-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:1040;
  display:flex;background:#fff;border-top:1px solid var(--line);
  box-shadow:0 -2px 12px rgba(18,26,36,.06);
  padding-bottom:env(safe-area-inset-bottom,0px);
}
.tab-bar a{
  flex:1 1 0;min-height:56px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:3px;font-size:11px;color:var(--muted);padding:6px 2px;
}
.tab-bar a i{font-size:17px}
.tab-bar a.active{color:var(--brand);font-weight:600}
@media (min-width:992px){.tab-bar{display:none}}

/* ---------- 其它 ---------- */
.divider{height:1px;background:var(--line);border:none;margin:0}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
@media (max-width:991.98px){
  body{padding-bottom:64px}
}

/* roulang page: article */
:root{
  --brand:#1E5AA8;
  --brand-700:#164A8C;
  --brand-050:#EAF1FA;
  --accent:#0FA383;
  --warm:#F2833A;
  --bg:#F5F7FB;
  --card:#FFFFFF;
  --line:#E4EAF3;
  --title:#121A24;
  --text:#3D4A5C;
  --muted:#6B7A8D;
  --dark:#0E2B4F;
  --r-card:16px;
  --r-btn:10px;
  --r-img:12px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(18,26,36,.06),0 8px 24px rgba(30,90,168,.06);
  --shadow-2:0 2px 4px rgba(18,26,36,.06),0 14px 32px rgba(30,90,168,.12);
  --t:160ms ease;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color var(--t),border-color var(--t),background var(--t)}
a:hover{color:var(--brand-700)}
h1,h2,h3,h4{color:var(--title);margin:0;line-height:1.35;font-weight:700}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
a:focus-visible,button:focus-visible,.btn:focus-visible,input:focus-visible{outline:2px solid var(--brand);outline-offset:2px;box-shadow:none}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (min-width:992px){.container{padding:0 32px}}

/* ---------- 顶栏 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(245,247,251,.86);
  backdrop-filter:saturate(180%) blur(10px);
  border-bottom:1px solid transparent;
  transition:background var(--t),border-color var(--t),box-shadow var(--t);
}
.site-header.is-scrolled{background:#fff;border-bottom-color:var(--line);box-shadow:0 6px 20px rgba(18,26,36,.06)}
.header-inner{display:flex;align-items:center;gap:24px;height:72px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:36px;height:36px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--brand),#2E74C9);color:#fff;font-size:16px;flex:0 0 auto;
}
.brand-text{font-size:17px;font-weight:700;color:var(--title);letter-spacing:.01em;white-space:nowrap}
.nav-menu{display:flex;align-items:center;gap:6px;flex:1 1 auto}
.nav-menu li{list-style:none}
.nav-menu a{
  display:inline-block;padding:10px 14px;border-radius:var(--r-btn);
  font-size:15px;color:var(--text);position:relative;white-space:nowrap;
}
.nav-menu a:hover{color:var(--brand);background:var(--brand-050)}
.nav-menu a.active{color:var(--brand);font-weight:600;background:var(--brand-050)}
.nav-menu a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;border-radius:2px;background:var(--brand);
}
.header-cta{flex:0 0 auto}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-btn);border:1px solid transparent;
  padding:11px 20px;font-size:15px;font-weight:600;line-height:1.2;
  transition:background var(--t),color var(--t),border-color var(--t),transform var(--t),box-shadow var(--t);
  cursor:pointer;
}
.btn-primary{background:var(--brand);border-color:var(--brand);color:#fff}
.btn-primary:hover,.btn-primary:focus{background:var(--brand-700);border-color:var(--brand-700);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(30,90,168,.22)}
.btn-outline{background:#fff;border-color:#C9D8EC;color:var(--brand)}
.btn-outline:hover{background:var(--brand-050);border-color:var(--brand);color:var(--brand-700)}
.btn-light{background:#fff;border-color:#fff;color:var(--dark)}
.btn-light:hover{background:var(--brand-050);border-color:var(--brand-050);color:var(--brand-700);transform:translateY(-1px)}
.btn-sm{padding:9px 16px;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 var(--t)}
.link-arrow:hover i{transform:translateX(3px)}

/* ---------- 页头 / 面包屑 ---------- */
.page-head{
  background:
    linear-gradient(180deg,rgba(255,255,255,.94) 0%,rgba(245,247,251,.9) 100%),
    url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  border-bottom:1px solid var(--line);
  padding:28px 0 40px;
}
.breadcrumb-nav{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--muted);margin-bottom:22px}
.breadcrumb-nav a{color:var(--muted)}
.breadcrumb-nav a:hover{color:var(--brand)}
.breadcrumb-nav .sep{color:#B9C6D6}
.breadcrumb-nav .current{color:#8A96A6;max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-head{max-width:820px}
.badge-cat{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--brand-050);color:var(--brand);
  border-radius:var(--r-pill);padding:5px 12px;font-size:12px;font-weight:600;letter-spacing:.02em;
}
.article-head h1{font-size:34px;margin:16px 0 14px;letter-spacing:-.01em}
@media (min-width:992px){.article-head h1{font-size:40px}}
.meta-line{display:flex;flex-wrap:wrap;align-items:center;gap:10px;color:var(--muted);font-size:14px;font-variant-numeric:tabular-nums}
.meta-line .dot{color:#B9C6D6}
.meta-line time{color:var(--muted)}

/* ---------- 正文布局 ---------- */
.article-body{padding:48px 0 72px}
.layout{display:grid;grid-template-columns:minmax(0,1fr);gap:44px}
@media (min-width:1200px){.layout{grid-template-columns:minmax(0,1fr) 300px;align-items:start}}
.hero-cover{margin:0 0 32px}
.hero-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-img);box-shadow:var(--shadow-1)}
.hero-cover figcaption{font-size:13px;color:var(--muted);margin-top:10px}

.panel{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-1);padding:28px;
}
@media (min-width:992px){.panel{padding:36px}}
.prose{max-width:760px;font-size:16px;line-height:1.9;color:var(--text)}
.prose>*:first-child{margin-top:0}
.prose p{margin:0 0 1.25em}
.prose h2{
  position:relative;font-size:24px;margin:2em 0 .8em;padding-left:16px;color:var(--title);
}
.prose h2::before{
  content:"";position:absolute;left:0;top:.32em;width:3px;height:20px;border-radius:2px;background:var(--brand);
}
.prose h3{font-size:19px;font-weight:600;margin:1.6em 0 .6em;color:var(--title)}
.prose h4{font-size:17px;font-weight:600;margin:1.4em 0 .5em;color:var(--title)}
.prose a{color:var(--brand);border-bottom:1px solid rgba(30,90,168,.35)}
.prose a:hover{color:var(--brand-700);border-bottom-color:var(--brand-700)}
.prose strong{color:var(--title)}
.prose ul{margin:0 0 1.25em;padding-left:0}
.prose ul li{position:relative;padding-left:20px;margin-bottom:.55em}
.prose ul li::before{
  content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;border-radius:2px;background:var(--accent);
}
.prose ol{counter-reset:pl;margin:0 0 1.25em;padding-left:0}
.prose ol li{counter-increment:pl;position:relative;padding-left:38px;margin-bottom:.7em;min-height:26px}
.prose ol li::before{
  content:counter(pl);position:absolute;left:0;top:.3em;width:24px;height:24px;border-radius:50%;
  background:var(--brand);color:#fff;font-size:13px;font-weight:600;
  display:flex;align-items:center;justify-content:center;font-variant-numeric:tabular-nums;
}
.prose blockquote{
  margin:1.6em 0;padding:16px 20px;border-left:3px solid var(--brand);
  background:var(--brand-050);border-radius:0 var(--r-img) var(--r-img) 0;color:#2C3B4E;
}
.prose blockquote p:last-child{margin-bottom:0}
.prose img{border-radius:var(--r-img);margin:1.4em 0;height:auto}
.prose figure{margin:1.6em 0}
.prose figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:10px}
.table-wrap{overflow-x:auto;margin:1.6em 0;border:1px solid var(--line);border-radius:var(--r-img)}
.prose table{width:100%;border-collapse:collapse;font-size:15px;min-width:520px}
.prose table th{background:var(--brand-050);color:var(--title);font-weight:600;text-align:left}
.prose table th,.prose table td{padding:12px 16px;border-bottom:1px solid var(--line)}
.prose table tr:last-child td{border-bottom:0}

.empty-state{text-align:center;padding:56px 20px}
.empty-state i{font-size:34px;color:#B9C6D6}
.empty-state h2{font-size:22px;margin:16px 0 8px}
.empty-state p{color:var(--muted);margin-bottom:22px}

/* ---------- 侧栏 ---------- */
.side-col{display:flex;flex-direction:column;gap:20px}
@media (min-width:1200px){.side-col{position:sticky;top:96px}}
.side-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow-1);padding:22px}
.side-card h3{font-size:16px;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.side-card h3 i{color:var(--brand);font-size:14px}
.toc-list li{margin-bottom:10px}
.toc-list a{font-size:14px;color:var(--text);display:block;padding-left:12px;border-left:2px solid var(--line);line-height:1.5}
.toc-list a:hover{color:var(--brand);border-left-color:var(--brand)}
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px}
.tag-cloud a{
  display:inline-block;padding:6px 12px;border-radius:var(--r-pill);
  background:#F2F6FC;border:1px solid var(--line);color:var(--text);font-size:13px;
}
.tag-cloud a:hover{background:var(--brand-050);border-color:#C9D8EC;color:var(--brand)}
.side-cta{background:linear-gradient(160deg,#0E2B4F 0%,#143A66 100%);border:0;color:#D6E3F2}
.side-cta h3{color:#fff}
.side-cta h3 i{color:#7FB2E8}
.side-cta p{font-size:14px;color:#B8CCE2;margin-bottom:16px}
.side-cta .btn{width:100%}

/* ---------- 相关推荐 ---------- */
.recommend{margin-top:56px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:24px}
.section-head h2{font-size:24px;position:relative;padding-left:16px}
.section-head h2::before{content:"";position:absolute;left:0;top:.3em;width:3px;height:20px;border-radius:2px;background:var(--brand)}
.card-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:24px}
@media (min-width:768px){.card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:992px){.card-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-1);overflow:hidden;display:flex;flex-direction:column;
  transition:box-shadow var(--t),transform var(--t);
}
.card:hover{box-shadow:var(--shadow-2);transform:translateY(-3px)}
.card-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--brand-050)}
.card-thumb img{width:100%;height:100%;object-fit:cover}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto}
.card-body h3{font-size:17px;line-height:1.5}
.card-body p{font-size:14px;color:var(--muted);flex:1 1 auto}
.card-foot{display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--muted)}

/* ---------- FAQ ---------- */
.faq-block{margin-top:56px}
.faq-item{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-1);margin-bottom:14px;overflow:hidden;
}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;padding:16px 22px;font-size:16px;font-weight:600;color:var(--title);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;font-size:13px;color:var(--muted);
  transition:transform var(--t),color var(--t);flex:0 0 auto;
}
.faq-item[open] summary{color:var(--brand)}
.faq-item[open] summary::after{transform:rotate(180deg);color:var(--brand)}
.faq-item .faq-a{padding:0 22px 20px;font-size:15px;color:var(--text);line-height:1.8}

/* ---------- CTA 带 ---------- */
.cta-band{background:linear-gradient(120deg,#0E2B4F 0%,#123459 100%);color:#DCE8F6;padding:56px 0}
.cta-inner{display:flex;flex-direction:column;gap:22px;align-items:flex-start}
@media (min-width:768px){.cta-inner{flex-direction:row;align-items:center;justify-content:space-between}}
.cta-inner h2{color:#fff;font-size:26px;margin-bottom:10px}
.cta-inner p{color:#AFC5DE;font-size:15px;max-width:52ch}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:#AFC5DE;padding:56px 0 24px;font-size:14px}
.footer-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:32px}
@media (min-width:768px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:28px}}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:700;margin-bottom:14px}
.footer-brand .brand-mark{background:rgba(255,255,255,.12)}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:14px}
.site-footer p{color:#9DB4CE;line-height:1.8}
.footer-links li{margin-bottom:10px}
.footer-links a{color:#AFC5DE}
.footer-links a:hover{color:#fff;text-decoration:underline}
.footer-contact li{display:flex;align-items:flex-start;gap:10px;margin-bottom:12px;color:#AFC5DE}
.footer-contact i{color:#7FB2E8;margin-top:4px;font-size:13px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);margin-top:36px;padding-top:20px;
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;color:#8FA8C4;font-size:13px;
}

/* ---------- 回到顶部 ---------- */
#toTop{
  position:fixed;right:22px;bottom:84px;z-index:1040;
  width:46px;height:46px;border-radius:50%;border:1px solid var(--line);background:#fff;color:var(--brand);
  box-shadow:var(--shadow-2);display:flex;align-items:center;justify-content:center;
  opacity:0;visibility:hidden;transform:translateY(8px);transition:all var(--t);
}
#toTop.show{opacity:1;visibility:visible;transform:translateY(0)}
@media (min-width:992px){#toTop{bottom:32px}}

/* ---------- 移动底部 Tab ---------- */
.mobile-tab{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:1050;
  background:#fff;border-top:1px solid var(--line);
  padding:6px 4px calc(6px + env(safe-area-inset-bottom));
  box-shadow:0 -6px 20px rgba(18,26,36,.06);
}
.mobile-tab ul{display:flex;align-items:stretch}
.mobile-tab li{flex:1 1 0;min-width:0}
.mobile-tab a{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  min-height:48px;font-size:11px;color:var(--muted);border-radius:10px;padding:4px 2px;text-align:center;
}
.mobile-tab a i{font-size:17px}
.mobile-tab a.active{color:var(--brand);font-weight:600}
.mobile-tab a.active i{color:var(--brand)}
@media (max-width:991px){
  .nav-menu,.header-cta{display:none}
  .mobile-tab{display:block}
  body{padding-bottom:calc(64px + env(safe-area-inset-bottom))}
  .header-inner{height:64px}
  .article-head h1{font-size:26px}
  .panel{padding:22px 18px}
  .prose h2{font-size:21px}
  .prose{font-size:16px;line-height:1.85}
  .cta-inner h2{font-size:22px}
}
@media (min-width:992px){
  .mobile-tab{display:none}
}

/* roulang page: category1 */
:root{
  --brand:#1E5AA8;
  --brand-700:#164A8C;
  --brand-050:#EAF1FA;
  --accent:#0FA383;
  --warm:#F2833A;
  --bg:#F5F7FB;
  --card:#FFFFFF;
  --line:#E4EAF3;
  --title:#121A24;
  --text:#3D4A5C;
  --muted:#6B7A8D;
  --dark:#0E2B4F;
  --r-card:16px;
  --r-btn:10px;
  --r-img:12px;
  --shadow-sm:0 1px 2px rgba(18,26,36,.06),0 8px 24px rgba(30,90,168,.06);
  --shadow-lg:0 2px 4px rgba(18,26,36,.08),0 14px 32px rgba(30,90,168,.12);
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,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:1.75;
  color:var(--text);
  background:var(--bg);
  padding-bottom:0;
}
h1,h2,h3,h4,h5{margin:0;color:var(--title);font-weight:700;line-height:1.35;}
p{margin:0;}
a{color:var(--brand);text-decoration:none;transition:color .16s ease;}
a:hover{color:var(--brand-700);}
ul,ol{margin:0;padding:0;list-style:none;}
img{max-width:100%;display:block;}
button{font-family:inherit;}
: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;
}
@media (min-width:992px){
  .container{padding-left:32px;padding-right:32px;}
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:10px 22px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  cursor:pointer;
  transition:background-color .16s ease,color .16s ease,border-color .16s ease,transform .16s ease,box-shadow .16s ease;
}
.btn-primary{
  background:var(--brand);
  color:#fff;
  box-shadow:0 6px 16px rgba(30,90,168,.22);
}
.btn-primary:hover,.btn-primary:focus{
  background:var(--brand-700);
  color:#fff;
  transform:translateY(-1px);
}
.btn-outline{
  background:#fff;
  color:var(--brand);
  border-color:var(--brand);
}
.btn-outline:hover,.btn-outline:focus{
  background:var(--brand-050);
  color:var(--brand-700);
}
.btn-light{
  background:#fff;
  color:var(--dark);
  border-color:#fff;
}
.btn-light:hover{background:var(--brand-050);color:var(--dark);}
.btn-sm{min-height:40px;padding:8px 18px;font-size:14px;}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-weight:600;
  color:var(--brand);
}
.text-link i{transition:transform .16s ease;}
.text-link:hover i{transform:translateX(3px);}

/* ============ 标签 / 徽章 ============ */
.badge-soft{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 12px;
  border-radius:999px;
  background:var(--brand-050);
  color:var(--brand);
  font-size:12px;
  font-weight:500;
  letter-spacing:.02em;
  line-height:1.5;
}
.badge-accent{background:rgba(15,163,131,.12);color:#0B7A62;}
.badge-warm{background:rgba(242,131,58,.14);color:#C15E15;}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(255,255,255,.95);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:box-shadow .2s ease,border-color .2s ease;
}
.site-header.is-scrolled{
  border-bottom-color:var(--line);
  box-shadow:0 6px 20px rgba(18,26,36,.06);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  min-height:72px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:18px;
  font-weight:700;
  color:var(--title);
  white-space:nowrap;
}
.brand:hover{color:var(--brand);}
.brand-mark{
  width:34px;height:34px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:10px;
  background:var(--brand);
  color:#fff;
  font-size:15px;
  flex:none;
}
.nav-menu{
  display:flex;
  align-items:center;
  gap:4px;
}
.nav-menu a{
  position:relative;
  display:inline-block;
  padding:10px 14px;
  border-radius:8px;
  font-size:15px;
  font-weight:500;
  color:var(--text);
}
.nav-menu a:hover{background:var(--brand-050);color:var(--brand);}
.nav-menu a.active{color:var(--brand);font-weight:600;}
.nav-menu a.active::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:2px;
  height:2px;
  border-radius:2px;
  background:var(--brand);
}
.header-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  background:#fff;
  color:var(--title);
  font-size:17px;
  align-items:center;
  justify-content:center;
}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand);}

/* 抽屉 */
.nav-drawer{
  position:fixed;
  top:0;right:0;
  width:280px;
  height:100%;
  background:#fff;
  border-left:1px solid var(--line);
  box-shadow:-12px 0 32px rgba(18,26,36,.12);
  transform:translateX(102%);
  transition:transform .26s ease;
  z-index:1050;
  padding:24px 20px;
  overflow-y:auto;
}
.nav-drawer.is-open{transform:translateX(0);}
.nav-drawer-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  margin-bottom:18px;
  font-weight:700;
  color:var(--title);
}
.nav-drawer-close{
  width:40px;height:40px;
  border:1px solid var(--line);
  background:#fff;
  border-radius:10px;
  color:var(--muted);
}
.nav-drawer ul li a{
  display:block;
  padding:13px 14px;
  border-radius:10px;
  font-size:15px;
  color:var(--text);
  font-weight:500;
}
.nav-drawer ul li a:hover{background:var(--brand-050);color:var(--brand);}
.nav-drawer ul li a.active{background:var(--brand-050);color:var(--brand);font-weight:600;}
.drawer-mask{
  position:fixed;
  inset:0;
  background:rgba(14,43,79,.35);
  opacity:0;
  visibility:hidden;
  transition:opacity .2s ease;
  z-index:1045;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}

/* ============ 移动端底部 Tab ============ */
.mobile-tabs{
  display:none;
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:1040;
  background:#fff;
  border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
}
.mobile-tabs a{
  flex:1;
  min-height:56px;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:2px;
  font-size:11px;
  color:var(--muted);
  padding:6px 2px;
}
.mobile-tabs a i{font-size:17px;}
.mobile-tabs a.active{color:var(--brand);font-weight:600;}

/* ============ 页头 ============ */
.page-hero{
  position:relative;
  padding:40px 0 76px;
  background-image:linear-gradient(rgba(245,247,251,.95),rgba(245,247,251,.86)),url("/assets/images/backpic/back-1.webp");
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
}
.crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--muted);
  margin-bottom:28px;
}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--brand);}
.crumb .sep{color:#B7C3D3;}
.crumb .current{color:var(--title);font-weight:600;}
.hero-grid{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:48px;
  align-items:center;
}
.hero-eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-bottom:18px;
}
.hero-grid h1{
  font-size:40px;
  line-height:1.25;
  margin-bottom:18px;
  letter-spacing:-.01em;
}
.hero-lead{
  max-width:40ch;
  font-size:16px;
  color:var(--text);
  margin-bottom:14px;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:28px;
}
.hero-points{
  display:flex;
  flex-wrap:wrap;
  gap:22px;
  margin-top:30px;
  padding-top:24px;
  border-top:1px solid var(--line);
}
.hero-points li{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:var(--text);
}
.hero-points i{color:var(--accent);}
.hero-figure{
  position:relative;
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--shadow-lg);
  background:#fff;
}
.hero-figure img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
}
.hero-figure figcaption{
  position:absolute;
  left:16px;bottom:16px;
  background:rgba(255,255,255,.94);
  border-radius:999px;
  padding:6px 14px;
  font-size:12px;
  font-weight:600;
  color:var(--brand);
}

/* ============ 区块 ============ */
.section{padding:88px 0;}
.section-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:720px;margin-bottom:48px;}
.section-head h2{
  font-size:30px;
  line-height:1.35;
  margin-bottom:16px;
}
.section-head h2::before{
  content:"";
  display:inline-block;
  width:3px;
  height:24px;
  border-radius:2px;
  background:var(--brand);
  margin-right:14px;
  vertical-align:-3px;
}
.section-head p{font-size:16px;color:var(--text);max-width:42ch;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.section-head.center p{margin-left:auto;margin-right:auto;}

/* ============ 图文交错 ============ */
.split{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:56px;
  align-items:center;
}
.split + .split{margin-top:72px;}
.split.reverse .split-media{order:2;}
.split-media{
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--shadow-sm);
  background:#fff;
}
.split-media img{width:100%;object-fit:cover;}
.split-media.ratio-43 img{aspect-ratio:4/3;}
.split-media.ratio-169 img{aspect-ratio:16/9;}
.split-index{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:13px;
  font-weight:600;
  color:var(--muted);
  letter-spacing:.04em;
  margin-bottom:14px;
  font-variant-numeric:tabular-nums;
}
.split-index span{
  width:26px;height:26px;
  border-radius:8px;
  background:var(--brand-050);
  color:var(--brand);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-size:12px;
}
.split-body h3{font-size:22px;margin-bottom:14px;}
.split-body p{margin-bottom:16px;}
.plain-list li{
  position:relative;
  padding-left:22px;
  margin-bottom:10px;
  font-size:15px;
  color:var(--text);
}
.plain-list li::before{
  content:"";
  position:absolute;
  left:0;top:11px;
  width:7px;height:7px;
  border-radius:50%;
  background:var(--brand);
}

/* ============ 步骤条 ============ */
.steps{
  position:relative;
  display:grid;
  grid-template-columns:repeat(5,1fr);
  gap:20px;
  padding-top:8px;
}
.steps::before{
  content:"";
  position:absolute;
  top:25px;
  left:9%;
  right:9%;
  height:2px;
  background:var(--line);
}
.step{position:relative;z-index:1;}
.step .dot{
  width:36px;height:36px;
  border-radius:999px;
  background:var(--brand-050);
  color:var(--brand);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:14px;
  font-weight:700;
  margin-bottom:16px;
  font-variant-numeric:tabular-nums;
  border:2px solid #fff;
  box-shadow:0 0 0 2px var(--line);
}
.step.is-current .dot{
  background:var(--accent);
  color:#fff;
  box-shadow:0 0 0 2px rgba(15,163,131,.28);
}
.step.is-done .dot{
  background:var(--brand);
  color:#fff;
  box-shadow:0 0 0 2px rgba(30,90,168,.2);
}
.step h3{font-size:16px;margin-bottom:8px;font-weight:600;}
.step p{font-size:14px;line-height:1.7;color:var(--muted);}

/* ============ 指标卡 ============ */
.metric-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
}
.metric-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:26px 24px;
  box-shadow:var(--shadow-sm);
  transition:box-shadow .2s ease,transform .2s ease;
}
.metric-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-2px);}
.metric-num{
  font-size:32px;
  font-weight:700;
  color:var(--accent);
  line-height:1.2;
  font-variant-numeric:tabular-nums;
  letter-spacing:-.01em;
}
.metric-num small{font-size:15px;font-weight:600;margin-left:4px;color:var(--accent);}
.metric-card h3{font-size:15px;font-weight:600;margin:10px 0 6px;}
.metric-card p{font-size:13px;color:var(--muted);line-height:1.7;}

/* ============ 清单 ============ */
.check-panel{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:32px;
  box-shadow:var(--shadow-sm);
}
.check-list{display:grid;grid-template-columns:1fr 1fr;gap:14px 28px;}
.check-list li{
  display:flex;
  align-items:flex-start;
  gap:10px;
  font-size:15px;
  color:var(--text);
  padding-bottom:14px;
  border-bottom:1px dashed var(--line);
}
.check-list i{color:var(--accent);font-size:15px;margin-top:5px;flex:none;}

/* ============ 提示块 ============ */
.notice{
  display:flex;
  gap:16px;
  align-items:flex-start;
  background:var(--brand-050);
  border:1px solid rgba(30,90,168,.16);
  border-left:3px solid var(--brand);
  border-radius:var(--r-card);
  padding:22px 26px;
  margin-top:40px;
}
.notice i{color:var(--brand);font-size:18px;margin-top:3px;}
.notice strong{display:block;color:var(--title);margin-bottom:6px;font-size:15px;}
.notice p{font-size:14px;color:var(--text);}

/* ============ FAQ ============ */
.faq-list{max-width:860px;}
.faq-item{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  margin-bottom:14px;
  overflow:hidden;
  transition:box-shadow .2s ease,border-color .2s ease;
}
.faq-item[open]{border-color:rgba(30,90,168,.28);box-shadow:var(--shadow-sm);}
.faq-item summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  min-height:56px;
  padding:16px 24px;
  cursor:pointer;
  list-style:none;
  font-size:16px;
  font-weight:600;
  color:var(--title);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary i{color:var(--brand);transition:transform .2s ease;flex:none;}
.faq-item[open] summary{color:var(--brand);}
.faq-item[open] summary i{transform:rotate(180deg);}
.faq-body{
  padding:0 24px 20px;
  font-size:15px;
  color:var(--text);
  border-top:1px solid var(--line);
  padding-top:16px;
  margin-top:-1px;
}

/* ============ CTA ============ */
.cta-band{
  background:var(--dark);
  background-image:linear-gradient(120deg,rgba(255,255,255,.05),rgba(255,255,255,0) 60%);
  padding:64px 0;
}
.cta-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:36px;
}
.cta-inner h2{color:#fff;font-size:26px;margin-bottom:10px;}
.cta-inner p{color:rgba(255,255,255,.76);font-size:15px;max-width:52ch;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;flex:none;}

/* ============ 相关分类 ============ */
.related{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:18px;
  margin-top:36px;
}
.related a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:20px 22px;
  font-size:15px;
  font-weight:600;
  color:var(--title);
  box-shadow:var(--shadow-sm);
  transition:box-shadow .2s ease,transform .2s ease,border-color .2s ease;
}
.related a i{color:var(--brand);transition:transform .16s ease;font-size:13px;}
.related a:hover{
  border-color:rgba(30,90,168,.35);
  box-shadow:var(--shadow-lg);
  transform:translateY(-2px);
  color:var(--brand);
}
.related a:hover i{transform:translateX(3px);}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--dark);
  color:rgba(255,255,255,.74);
  padding:64px 0 28px;
  font-size:14px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.35fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:40px;
  border-bottom:1px solid rgba(255,255,255,.12);
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  color:#fff;
  font-size:17px;
  font-weight:700;
  margin-bottom:16px;
}
.footer-brand .brand-mark{background:rgba(255,255,255,.14);color:#fff;}
.site-footer p{color:rgba(255,255,255,.66);line-height:1.8;max-width:34ch;}
.site-footer h4{
  color:#fff;
  font-size:15px;
  font-weight:600;
  margin-bottom:18px;
}
.footer-links li{margin-bottom:11px;}
.footer-links a{color:rgba(255,255,255,.72);}
.footer-links a:hover{color:#fff;text-decoration:underline;}
.footer-contact li{
  display:flex;
  align-items:flex-start;
  gap:10px;
  margin-bottom:12px;
  color:rgba(255,255,255,.72);
  line-height:1.6;
}
.footer-contact i{color:rgba(255,255,255,.55);margin-top:4px;font-size:13px;}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding-top:24px;
  font-size:13px;
  color:rgba(255,255,255,.55);
}

/* ============ 返回顶部 ============ */
.to-top{
  position:fixed;
  right:24px;
  bottom:32px;
  width:46px;height:46px;
  border-radius:12px;
  border:1px solid var(--line);
  background:#fff;
  color:var(--brand);
  box-shadow:var(--shadow-sm);
  display:flex;
  align-items:center;
  justify-content:center;
  opacity:0;
  visibility:hidden;
  transform:translateY(8px);
  transition:opacity .2s ease,transform .2s ease,visibility .2s ease;
  z-index:1035;
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:var(--brand-050);}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .nav-menu a{padding:10px 11px;font-size:14px;}
  .section{padding:76px 0;}
}
@media (max-width:991.98px){
  .nav-menu{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-actions .btn{display:none;}
  .mobile-tabs{display:flex;}
  body{padding-bottom:64px;}
  .to-top{bottom:88px;right:16px;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero-grid h1{font-size:32px;}
  .split{grid-template-columns:1fr;gap:28px;}
  .split.reverse .split-media{order:0;}
  .split + .split{margin-top:52px;}
  .metric-grid{grid-template-columns:repeat(2,1fr);}
  .related{grid-template-columns:1fr;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767.98px){
  .section{padding:56px 0;}
  .section-head{margin-bottom:32px;}
  .section-head h2{font-size:24px;}
  .section-head h2::before{height:20px;margin-right:10px;}
  .hero-grid h1{font-size:28px;}
  .hero-actions .btn{width:100%;}
  .hero-points{gap:14px;flex-direction:column;align-items:flex-start;}
  .steps{grid-template-columns:1fr;gap:0;}
  .steps::before{display:none;}
  .step{
    display:grid;
    grid-template-columns:36px 1fr;
    column-gap:16px;
    padding-bottom:26px;
    position:relative;
  }
  .step::after{
    content:"";
    position:absolute;
    left:17px;
    top:44px;
    bottom:0;
    width:2px;
    background:var(--line);
  }
  .step:last-child{padding-bottom:0;}
  .step:last-child::after{display:none;}
  .step .dot{margin-bottom:0;grid-row:1 / span 2;}
  .step h3,.step p{grid-column:2;}
  .step h3{margin-top:6px;margin-bottom:6px;}
  .metric-grid{grid-template-columns:1fr;}
  .check-list{grid-template-columns:1fr;gap:12px;}
  .check-panel{padding:24px 20px;}
  .notice{padding:20px;}
  .faq-item summary{padding:16px 20px;font-size:15px;}
  .faq-body{padding:16px 20px 20px;}
  .cta-band{padding:48px 0;}
  .cta-inner h2{font-size:22px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .site-footer{padding:48px 0 24px;}
}
@media (max-width:519.98px){
  .container{padding-left:18px;padding-right:18px;}
  .hero-grid h1{font-size:25px;}
  .brand{font-size:16px;}
  .mobile-tabs a{font-size:10px;}
}

/* roulang page: category2 */
:root{
  --brand:#1E5AA8;
  --brand-700:#164A8C;
  --brand-050:#EAF1FA;
  --accent:#0FA383;
  --warm:#F2833A;
  --bg:#F5F7FB;
  --card:#FFFFFF;
  --line:#E4EAF3;
  --ink:#121A24;
  --text:#3D4A5C;
  --muted:#6B7A8D;
  --dark:#0E2B4F;
  --radius:16px;
  --radius-sm:10px;
  --radius-xs:12px;
  --shadow:0 1px 2px rgba(18,26,36,.06), 0 8px 24px rgba(30,90,168,.06);
  --shadow-hover:0 2px 4px rgba(18,26,36,.06), 0 14px 32px rgba(30,90,168,.12);
  --t:160ms ease;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.75;
  padding-bottom:0;
}
h1,h2,h3,h4,h5{color:var(--ink);font-weight:700;margin:0;line-height:1.35;}
p{margin:0 0 16px;}
a{color:var(--brand);text-decoration:none;transition:color var(--t);}
a:hover{color:var(--brand-700);}
img{max-width:100%;height:auto;display:block;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}

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

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:1040;
  background:rgba(245,247,251,.92);
  backdrop-filter:blur(8px);
  border-bottom:1px solid transparent;
  transition:background var(--t), border-color var(--t), box-shadow var(--t);
}
.site-header.is-scrolled{
  background:#fff;
  border-bottom-color:var(--line);
  box-shadow:0 6px 20px rgba(18,26,36,.05);
}
.header-inner{
  display:flex;align-items:center;gap:24px;
  min-height:72px;
}
.logo{
  display:flex;align-items:center;gap:10px;
  font-weight:700;font-size:18px;color:var(--ink);
  letter-spacing:.01em;white-space:nowrap;
}
.logo:hover{color:var(--brand);}
.brand-mark{
  width:34px;height:34px;border-radius:10px;
  background:var(--brand);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:15px;flex:0 0 34px;
}
.nav-desktop{margin-left:auto;}
.nav-menu{display:flex;align-items:center;gap:6px;}
.nav-menu a{
  display:inline-block;padding:9px 14px;border-radius:var(--radius-sm);
  color:var(--text);font-size:15px;font-weight:500;position:relative;
}
.nav-menu a:hover{color:var(--brand);background:var(--brand-050);}
.nav-menu a.active{color:var(--brand);}
.nav-menu a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;
  height:2px;border-radius:2px;background:var(--brand);
}
.header-cta{margin-left:8px;}
.nav-toggle{
  display:none;margin-left:auto;
  width:44px;height:44px;border:1px solid var(--line);border-radius:var(--radius-sm);
  background:#fff;color:var(--ink);font-size:17px;cursor:pointer;
}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand);}
.nav-drawer{
  display:none;border-top:1px solid var(--line);background:#fff;
}
.nav-drawer.open{display:block;}
.nav-drawer ul{padding:8px 24px 18px;}
.nav-drawer a{
  display:block;padding:12px 4px;color:var(--text);font-size:15px;
  border-bottom:1px solid var(--line);
}
.nav-drawer a.active{color:var(--brand);font-weight:600;}
.nav-drawer li:last-child a{border-bottom:none;}

/* ---------- Buttons ---------- */
.btn-brand,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;border:1px solid transparent;
  cursor:pointer;transition:all var(--t);white-space:nowrap;
}
.btn-brand{background:var(--brand);color:#fff;}
.btn-brand:hover{background:var(--brand-700);color:#fff;transform:translateY(-1px);}
.btn-brand:active{transform:translateY(0);}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--brand);}
.btn-ghost:hover{background:var(--brand-050);color:var(--brand-700);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand);font-weight:600;font-size:15px;
}
.btn-text i{transition:transform var(--t);}
.btn-text:hover i{transform:translateX(3px);}

/* ---------- Page hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  padding:72px 0 64px;
  background:
    linear-gradient(100deg, rgba(255,255,255,.97) 0%, rgba(255,255,255,.9) 46%, rgba(255,255,255,.42) 100%),
    url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
  border-bottom:1px solid var(--line);
}
.breadcrumb-nav{font-size:14px;color:var(--muted);margin-bottom:20px;display:flex;flex-wrap:wrap;gap:6px;align-items:center;}
.breadcrumb-nav a{color:var(--muted);}
.breadcrumb-nav a:hover{color:var(--brand);}
.breadcrumb-nav .sep{color:#C3CEDD;}
.breadcrumb-nav .current{color:var(--ink);font-weight:600;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:5px 14px;border-radius:999px;
  background:var(--brand-050);color:var(--brand);
  font-size:12px;font-weight:500;letter-spacing:.02em;margin-bottom:18px;
}
.page-hero h1{font-size:40px;line-height:1.25;max-width:820px;margin-bottom:16px;}
.hero-sub{font-size:18px;color:var(--ink);max-width:640px;margin-bottom:12px;}
.hero-lead{max-width:640px;color:var(--text);margin-bottom:28px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;}
.hero-stats{display:flex;flex-wrap:wrap;gap:40px;margin-top:40px;}
.hero-stats .num{
  font-size:30px;font-weight:700;color:var(--accent);
  font-variant-numeric:tabular-nums;line-height:1.2;
}
.hero-stats .num span{font-size:15px;color:var(--muted);font-weight:500;margin-left:4px;}
.hero-stats .cap{font-size:13px;color:var(--muted);}

/* ---------- Sections ---------- */
.section{padding:88px 0;}
.section.alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head h2{
  font-size:30px;line-height:1.35;margin-bottom:14px;
  padding-left:16px;position:relative;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:8px;bottom:8px;
  width:3px;border-radius:2px;background:var(--brand);
}
.section-head p{color:var(--muted);margin:0;}
.section-head.row-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
  max-width:none;
}

/* ---------- Metric cards ---------- */
.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.metric-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 24px;box-shadow:var(--shadow);
  transition:box-shadow var(--t), transform var(--t);
}
.metric-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);}
.metric-card .k{
  font-size:32px;font-weight:700;color:var(--brand);
  font-variant-numeric:tabular-nums;line-height:1.15;
}
.metric-card .k em{font-style:normal;font-size:16px;color:var(--muted);font-weight:500;margin-left:4px;}
.metric-card h3{font-size:17px;margin:10px 0 6px;}
.metric-card p{font-size:14px;color:var(--muted);margin:0;line-height:1.65;}

/* ---------- Table ---------- */
.table-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);overflow:hidden;
}
.table-scroll{overflow-x:auto;}
table.step-table{width:100%;border-collapse:collapse;min-width:760px;}
table.step-table thead th{
  background:var(--brand-050);color:var(--brand);
  font-size:14px;font-weight:600;text-align:left;
  padding:16px 20px;border-bottom:1px solid var(--line);white-space:nowrap;
}
table.step-table td{
  padding:18px 20px;border-bottom:1px solid var(--line);
  font-size:14.5px;line-height:1.7;vertical-align:top;color:var(--text);
}
table.step-table tbody tr:last-child td{border-bottom:none;}
table.step-table tbody tr:hover{background:#FAFCFE;}
.step-no{
  display:inline-flex;align-items:center;justify-content:center;
  width:28px;height:28px;border-radius:50%;background:var(--brand);color:#fff;
  font-size:13px;font-weight:600;font-variant-numeric:tabular-nums;
}
.tag{
  display:inline-block;padding:3px 10px;border-radius:999px;
  background:var(--brand-050);color:var(--brand);
  font-size:12px;font-weight:500;letter-spacing:.02em;
}
.tag.accent{background:rgba(15,163,131,.1);color:var(--accent);}
.tag.warm{background:rgba(242,131,58,.12);color:#C4611F;}
.cell-strong{color:var(--ink);font-weight:600;}

/* ---------- Checklist ---------- */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:start;}
.check-panel{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:30px 28px;box-shadow:var(--shadow);
}
.check-panel h3{font-size:20px;margin-bottom:6px;}
.check-panel .panel-desc{font-size:14px;color:var(--muted);margin-bottom:20px;}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;
  padding:14px 0;border-bottom:1px dashed var(--line);
}
.check-list li:last-child{border-bottom:none;padding-bottom:0;}
.check-list i{
  flex:0 0 22px;width:22px;height:22px;border-radius:50%;
  background:rgba(15,163,131,.12);color:var(--accent);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:11px;margin-top:4px;
}
.check-list strong{display:block;color:var(--ink);font-size:15px;margin-bottom:2px;}
.check-list span{font-size:14px;color:var(--muted);}
.figure-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow);
}
.figure-card img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.figure-card figcaption{
  padding:14px 18px;font-size:13px;color:var(--muted);
  border-top:1px solid var(--line);background:#fff;
}

/* ---------- Compare cards ---------- */
.compare-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.compare-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:28px 26px;box-shadow:var(--shadow);
  transition:box-shadow var(--t), transform var(--t);
}
.compare-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);}
.compare-card h3{font-size:19px;display:flex;align-items:center;gap:10px;margin-bottom:6px;}
.compare-card h3 i{color:var(--brand);font-size:16px;}
.compare-card .lead-line{font-size:14px;color:var(--muted);margin-bottom:18px;}
.compare-card ul li{
  display:flex;gap:10px;font-size:14.5px;padding:8px 0;color:var(--text);
}
.compare-card ul li i{color:var(--accent);font-size:12px;margin-top:7px;flex:0 0 12px;}

/* ---------- Notice / timeline strip ---------- */
.notice{
  display:flex;gap:16px;align-items:flex-start;
  background:#fff;border:1px solid rgba(242,131,58,.45);
  border-left:3px solid var(--warm);
  border-radius:var(--radius-xs);padding:20px 22px;margin-top:32px;
}
.notice i{color:var(--warm);font-size:18px;margin-top:4px;}
.notice strong{color:var(--ink);display:block;margin-bottom:4px;font-size:15px;}
.notice p{margin:0;font-size:14px;color:var(--text);}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:14px;}
.faq-item{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow);
}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  min-height:56px;padding:16px 24px;
  font-size:16px;font-weight:600;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--brand);}
.faq-item summary .chev{
  flex:0 0 26px;width:26px;height:26px;border-radius:50%;
  background:var(--brand-050);color:var(--brand);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:11px;transition:transform var(--t), background var(--t);
}
.faq-item[open] summary{color:var(--brand);}
.faq-item[open] summary .chev{transform:rotate(180deg);background:var(--brand);color:#fff;}
.faq-body{padding:0 24px 20px;font-size:14.5px;color:var(--text);line-height:1.75;}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--dark);
  background-image:linear-gradient(90deg, rgba(255,255,255,.06) 0%, rgba(255,255,255,0) 55%);
  color:#fff;padding:64px 0;
}
.cta-inner{
  display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap;
}
.cta-inner h2{color:#fff;font-size:28px;margin-bottom:10px;}
.cta-inner p{color:#C6D6E8;margin:0;max-width:640px;font-size:15px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}
.cta-band .btn-brand{background:#fff;color:var(--brand-700);}
.cta-band .btn-brand:hover{background:#EAF1FA;color:var(--brand-700);}

/* ---------- Related links ---------- */
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.related-link{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-xs);
  padding:18px 20px;color:var(--ink);font-weight:600;font-size:15px;
  transition:all var(--t);box-shadow:var(--shadow);
}
.related-link:hover{color:var(--brand);border-color:var(--brand);box-shadow:var(--shadow-hover);transform:translateY(-2px);}
.related-link i{color:var(--brand);font-size:13px;}

/* ---------- Footer ---------- */
.site-footer{background:var(--dark);color:#B9CADD;padding:64px 0 0;font-size:14px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:44px;}
.footer-brand{
  display:flex;align-items:center;gap:10px;
  color:#fff;font-size:18px;font-weight:700;margin-bottom:14px;
}
.site-footer p{color:#9DB2C9;line-height:1.75;margin:0;max-width:300px;}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:600;}
.footer-links li{margin-bottom:10px;}
.footer-links a{color:#B9CADD;}
.footer-links a:hover{color:#fff;text-decoration:underline;}
.footer-contact li{display:flex;gap:10px;align-items:flex-start;margin-bottom:12px;color:#B9CADD;}
.footer-contact i{color:#5C8FD6;margin-top:4px;font-size:13px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding:20px 0;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  color:#8AA1BA;font-size:13px;
}

/* ---------- Mobile tab bar ---------- */
.tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:1050;
  display:none;background:#fff;border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
  box-shadow:0 -6px 20px rgba(18,26,36,.06);
}
.tabbar ul{display:flex;}
.tabbar li{flex:1;}
.tabbar a{
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:3px;height:56px;font-size:11px;color:var(--muted);font-weight:500;
}
.tabbar a i{font-size:16px;}
.tabbar a.active{color:var(--brand);}
.tabbar a.active i{color:var(--brand);}

/* ---------- Responsive ---------- */
@media (max-width:1199px){
  .page-hero h1{font-size:36px;}
}
@media (max-width:991px){
  .nav-desktop,.header-cta{display:none;}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;}
  .tabbar{display:block;}
  body{padding-bottom:64px;}
  .section{padding:64px 0;}
  .page-hero{padding:52px 0 48px;}
  .page-hero h1{font-size:30px;}
  .hero-sub{font-size:17px;}
  .metric-grid{grid-template-columns:repeat(2,1fr);}
  .split{grid-template-columns:1fr;gap:28px;}
  .compare-grid{grid-template-columns:1fr;}
  .related-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
}
@media (max-width:575px){
  .container{padding:0 20px;}
  .page-hero h1{font-size:26px;}
  .section-head h2{font-size:24px;}
  .hero-stats{gap:26px;}
  .hero-stats .num{font-size:25px;}
  .metric-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .btn-brand,.btn-ghost{width:100%;}
  .hero-actions{width:100%;}
  .cta-actions{width:100%;}
  .faq-item summary{font-size:15px;padding:14px 18px;}
  .faq-body{padding:0 18px 18px;}
}

/* roulang page: category3 */
:root{
  --brand:#1E5AA8;
  --brand-700:#164A8C;
  --brand-050:#EAF1FA;
  --accent:#0FA383;
  --warm:#F2833A;
  --warm-050:#FFF6EE;
  --bg:#F5F7FB;
  --card:#FFFFFF;
  --line:#E4EAF3;
  --ink:#121A24;
  --text:#3D4A5C;
  --muted:#6B7A8D;
  --dark:#0E2B4F;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-card:0 1px 2px rgba(18,26,36,.06), 0 8px 24px rgba(30,90,168,.06);
  --shadow-hover:0 2px 4px rgba(18,26,36,.08), 0 14px 32px rgba(30,90,168,.12);
  --font-cn:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,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:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .16s ease;}
a:hover{color:var(--brand-700);}
h1,h2,h3,h4{color:var(--ink);margin:0;font-weight:700;}
h1{font-size:40px;line-height:1.22;}
h2{font-size:30px;line-height:1.32;}
h3{font-size:20px;line-height:1.5;font-weight:600;}
p{margin:0 0 1em;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--brand);color:#fff;padding:10px 16px;border-radius:0 0 10px 0;z-index:200;}
.skip-link:focus{left:0;color:#fff;}

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

/* ---------- 按钮 ---------- */
.btn-brand,.btn-ghost,.btn-light{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-btn);padding:13px 24px;font-size:15px;font-weight:600;
  line-height:1;cursor:pointer;text-decoration:none;border:1px solid transparent;
  transition:background-color .16s ease,color .16s ease,border-color .16s ease,transform .16s ease,box-shadow .16s ease;
}
.btn-brand{background:var(--brand);border-color:var(--brand);color:#fff;}
.btn-brand:hover{background:var(--brand-700);border-color:var(--brand-700);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(30,90,168,.22);}
.btn-ghost{background:#fff;border-color:var(--brand);color:var(--brand);}
.btn-ghost:hover{background:var(--brand-050);color:var(--brand-700);border-color:var(--brand-700);}
.btn-light{background:#fff;border-color:#fff;color:var(--brand);}
.btn-light:hover{background:#EAF1FA;border-color:#EAF1FA;color:var(--brand-700);transform:translateY(-1px);}
.btn-sm{padding:10px 18px;font-size:14px;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-weight:600;color:var(--brand);}
.link-arrow i{transition:transform .16s ease;font-size:13px;}
.link-arrow:hover i{transform:translateX(3px);}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.96);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease;
}
.site-header.scrolled{box-shadow:0 6px 20px rgba(18,26,36,.07);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--ink);font-weight:700;font-size:17px;text-decoration:none;}
.logo:hover{color:var(--brand);}
.brand-mark{
  width:34px;height:34px;border-radius:10px;background:var(--brand);color:#fff;
  display:grid;place-items:center;font-size:15px;flex:0 0 34px;
}
.nav-menu{display:flex;align-items:center;gap:6px;list-style:none;margin:0;padding:0;}
.nav-menu a{
  position:relative;display:inline-block;padding:10px 14px;border-radius:8px;
  color:var(--text);font-size:15px;font-weight:500;
}
.nav-menu a:hover{color:var(--brand);background:var(--brand-050);}
.nav-menu a.active{color:var(--brand);font-weight:600;}
.nav-menu a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:3px;height:2px;
  background:var(--brand);border-radius:2px;
}
.header-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;align-items:center;justify-content:center;width:44px;height:44px;
  border:1px solid var(--line);background:#fff;border-radius:10px;color:var(--ink);font-size:17px;cursor:pointer;
}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand);}
.mobile-drawer{display:none;border-top:1px solid var(--line);background:#fff;padding:12px 0 18px;}
.mobile-drawer.open{display:block;}
.mobile-drawer ul{display:flex;flex-direction:column;padding:0 24px;}
.mobile-drawer a{
  display:block;padding:14px 4px;border-bottom:1px solid var(--line);
  color:var(--text);font-size:15px;font-weight:500;
}
.mobile-drawer li:last-child a{border-bottom:none;}
.mobile-drawer a.active{color:var(--brand);font-weight:600;}

/* ---------- 页头 ---------- */
.page-hero{
  padding:44px 0 72px;
  background:
    linear-gradient(100deg, rgba(255,255,255,.98) 0%, rgba(255,255,255,.94) 42%, rgba(245,247,251,.78) 100%),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  border-bottom:1px solid var(--line);
}
.breadcrumb-x{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--muted);margin-bottom:22px;}
.breadcrumb-x a{color:var(--muted);}
.breadcrumb-x a:hover{color:var(--brand);}
.breadcrumb-x .sep{color:#BFC9D8;}
.breadcrumb-x .current{color:var(--text);}
.page-hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center;}
.page-hero h1{max-width:16em;}
.lead{font-size:17px;line-height:1.8;color:var(--text);max-width:42ch;margin:20px 0 28px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}
.hero-figure{position:relative;}
.hero-figure img{
  width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--radius-card);
  border:1px solid var(--line);box-shadow:var(--shadow-card);
}
.float-stat{
  position:absolute;left:-18px;bottom:-20px;background:#fff;border:1px solid var(--line);
  border-radius:14px;padding:14px 20px;box-shadow:var(--shadow-hover);display:flex;align-items:center;gap:12px;
}
.float-stat .num{font-size:24px;font-weight:700;color:var(--accent);line-height:1;}
.float-stat .cap{font-size:12px;color:var(--muted);letter-spacing:.02em;}

/* ---------- 板块 ---------- */
.section{padding:96px 0;}
.section-light{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-tight{padding:72px 0;}
.section-head{max-width:760px;margin-bottom:36px;}
.section-head h2{position:relative;padding-left:18px;}
.section-head h2::before{
  content:"";position:absolute;left:0;top:7px;bottom:7px;width:3px;
  border-radius:2px;background:var(--brand);
}
.section-head p{margin:14px 0 0;color:var(--muted);font-size:16px;}

/* ---------- 时间线 ---------- */
.timeline{position:relative;margin-top:8px;}
.timeline::before{
  content:"";position:absolute;left:19px;top:12px;bottom:20px;width:2px;
  background:linear-gradient(180deg,var(--brand) 0%,var(--accent) 55%,var(--line) 100%);
  border-radius:2px;
}
.tl-item{position:relative;padding:0 0 32px 64px;}
.tl-item:last-child{padding-bottom:0;}
.tl-dot{
  position:absolute;left:0;top:0;width:40px;height:40px;border-radius:50%;
  display:grid;place-items:center;font-weight:700;font-size:15px;
  background:#fff;border:2px solid var(--brand);color:var(--brand);
  box-shadow:0 0 0 4px rgba(234,241,250,.9);
}
.tl-item.done .tl-dot{background:var(--accent);border-color:var(--accent);color:#fff;box-shadow:0 0 0 4px rgba(15,163,131,.12);}
.tl-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px 24px;box-shadow:var(--shadow-card);transition:box-shadow .18s ease,transform .18s ease;
}
.tl-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);}
.tl-card h3{margin-bottom:8px;}
.tl-card p{margin:0;color:var(--text);font-size:15px;}
.tl-meta{display:inline-block;margin-bottom:10px;font-size:12px;font-weight:500;letter-spacing:.02em;color:var(--brand);background:var(--brand-050);border-radius:999px;padding:3px 11px;}

/* ---------- 提示框 ---------- */
.warn-box{
  border:1px solid rgba(242,131,58,.42);
  background:var(--warm-050);
  border-radius:var(--radius-card);
  padding:8px 0;
  overflow:hidden;
}
.warn-inner{display:grid;grid-template-columns:repeat(3,1fr);gap:0;}
.warn-cell{padding:26px 24px;border-right:1px solid rgba(242,131,58,.22);}
.warn-cell:last-child{border-right:none;}
.warn-title{display:flex;align-items:center;gap:10px;font-weight:600;color:var(--ink);font-size:16px;margin-bottom:8px;}
.warn-title i{color:var(--warm);}
.warn-cell p{margin:0;font-size:14.5px;color:var(--text);}

/* ---------- 自查清单 ---------- */
.check-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.check-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-card);
  transition:box-shadow .18s ease,transform .18s ease,border-color .18s ease;
}
.check-item:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);border-color:#CFDDF0;}
.check-icon{
  width:42px;height:42px;border-radius:12px;background:var(--brand-050);color:var(--brand);
  display:grid;place-items:center;font-size:17px;margin-bottom:16px;
}
.check-item h3{font-size:17px;margin-bottom:8px;}
.check-item p{margin:0;font-size:14.5px;color:var(--muted);}

/* ---------- 图文区块 ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius-img);border:1px solid var(--line);box-shadow:var(--shadow-card);}
.split-body h2{margin-bottom:16px;position:relative;padding-left:18px;}
.split-body h2::before{content:"";position:absolute;left:0;top:7px;bottom:7px;width:3px;border-radius:2px;background:var(--brand);}
.step-list{margin:22px 0 0;}
.step-list li{position:relative;padding-left:30px;margin-bottom:14px;color:var(--text);}
.step-list li::before{
  content:"";position:absolute;left:4px;top:11px;width:8px;height:8px;border-radius:50%;
  background:var(--accent);
}
.step-list li strong{color:var(--ink);font-weight:600;}

/* ---------- FAQ ---------- */
.faq-list{max-width:880px;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  margin-bottom:16px;overflow:hidden;transition:box-shadow .18s ease,border-color .18s ease;
}
.faq-item:hover{box-shadow:var(--shadow-card);border-color:#D5E1F2;}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;padding:16px 24px;cursor:pointer;list-style:none;
  font-weight:600;color:var(--ink);font-size:16px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary i{color:var(--muted);font-size:14px;transition:transform .2s ease,color .2s ease;}
.faq-item[open] summary{color:var(--brand);}
.faq-item[open] summary i{transform:rotate(180deg);color:var(--brand);}
.faq-answer{padding:0 24px 22px;color:var(--text);font-size:15px;}
.faq-answer p:last-child{margin-bottom:0;}

/* ---------- 相关链接 ---------- */
.related-links{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:28px 32px;box-shadow:var(--shadow-card);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px;
}
.related-links h2{font-size:19px;}
.related-list{display:flex;flex-wrap:wrap;gap:12px;}
.related-list a{
  display:inline-flex;align-items:center;gap:8px;padding:10px 18px;
  border:1px solid var(--line);border-radius:999px;background:#fff;
  color:var(--text);font-size:14.5px;font-weight:500;
  transition:border-color .16s ease,color .16s ease,background-color .16s ease;
}
.related-list a:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-050);}
.related-list a i{font-size:12px;}

/* ---------- CTA 深色带 ---------- */
.cta-band{
  background:var(--dark);
  background-image:linear-gradient(135deg, rgba(255,255,255,.07) 0%, rgba(255,255,255,0) 62%);
  border-radius:20px;
  padding:52px 48px;
  display:flex;align-items:center;justify-content:space-between;gap:36px;
  color:#fff;
}
.cta-band h2{color:#fff;font-size:28px;margin-bottom:12px;}
.cta-band p{color:rgba(255,255,255,.78);margin:0;max-width:56ch;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;flex-shrink:0;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:rgba(255,255,255,.76);padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:17px;margin-bottom:16px;}
.footer-brand .brand-mark{background:rgba(255,255,255,.14);border-radius:10px;}
.site-footer p{font-size:14.5px;line-height:1.8;color:rgba(255,255,255,.7);margin:0;max-width:34ch;}
.site-footer h4{color:#fff;font-size:16px;margin-bottom:18px;font-weight:600;}
.footer-links li,.footer-contact li{margin-bottom:12px;}
.footer-links a{color:rgba(255,255,255,.76);font-size:14.5px;}
.footer-links a:hover{color:#fff;text-decoration:underline;}
.footer-contact li{display:flex;align-items:flex-start;gap:10px;font-size:14.5px;color:rgba(255,255,255,.76);}
.footer-contact i{color:rgba(255,255,255,.55);margin-top:5px;font-size:13px;}
.footer-bottom{
  margin-top:44px;border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0;display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-size:13px;color:rgba(255,255,255,.58);
}

/* ---------- 移动端底部 Tab ---------- */
.tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  display:none;background:#fff;border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
  box-shadow:0 -4px 16px rgba(18,26,36,.05);
}
.tab-item{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  min-height:56px;font-size:11px;color:var(--muted);text-decoration:none;
}
.tab-item i{font-size:18px;}
.tab-item.active{color:var(--brand);font-weight:600;}
.tab-item:hover{color:var(--brand);}

/* ---------- 回到顶部 ---------- */
.to-top{
  position:fixed;right:24px;bottom:28px;z-index:65;
  width:46px;height:46px;border-radius:12px;border:1px solid var(--line);
  background:#fff;color:var(--brand);display:none;place-items:center;cursor:pointer;
  box-shadow:var(--shadow-card);transition:box-shadow .16s ease,transform .16s ease;
}
.to-top.show{display:grid;}
.to-top:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .page-hero-grid{gap:40px;}
}
@media (max-width:991px){
  .container{padding:0 24px;}
  .header-inner{height:64px;}
  .nav-menu{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-actions .btn-brand{display:none;}
  .tabbar{display:grid;grid-template-columns:repeat(5,1fr);}
  body{padding-bottom:calc(56px + env(safe-area-inset-bottom) + 8px);}
  .to-top{bottom:calc(56px + env(safe-area-inset-bottom) + 20px);right:16px;}
  h1{font-size:28px;line-height:1.34;}
  h2{font-size:24px;line-height:1.4;}
  .section{padding:56px 0;}
  .section-tight{padding:48px 0;}
  .page-hero{padding:32px 0 48px;}
  .page-hero-grid{grid-template-columns:1fr;gap:32px;}
  .lead{font-size:16px;margin:16px 0 24px;}
  .float-stat{position:static;margin-top:16px;display:inline-flex;}
  .warn-inner{grid-template-columns:1fr;}
  .warn-cell{border-right:none;border-bottom:1px solid rgba(242,131,58,.22);}
  .warn-cell:last-child{border-bottom:none;}
  .check-grid{grid-template-columns:repeat(2,1fr);gap:16px;}
  .split{grid-template-columns:1fr;gap:28px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:36px 28px;}
  .cta-band h2{font-size:24px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .related-links{flex-direction:column;align-items:flex-start;padding:24px;}
}
@media (max-width:575px){
  .container{padding:0 20px;}
  .check-grid{grid-template-columns:1fr;}
  .tl-item{padding-left:54px;}
  .timeline::before{left:17px;}
  .tl-dot{width:36px;height:36px;font-size:14px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;}
  .hero-actions .btn-brand,.hero-actions .btn-ghost{width:100%;}
  .tab-item{font-size:10.5px;}
}

/* roulang page: category4 */
:root{
  --brand:#1E5AA8;
  --brand-700:#164A8C;
  --brand-050:#EAF1FA;
  --accent:#0FA383;
  --warm:#F2833A;
  --bg:#F5F7FB;
  --card:#FFFFFF;
  --line:#E4EAF3;
  --title:#121A24;
  --text:#3D4A5C;
  --muted:#6B7A8D;
  --dark:#0E2B4F;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-1:0 1px 2px rgba(18,26,36,.06), 0 8px 24px rgba(30,90,168,.06);
  --shadow-2:0 2px 4px rgba(18,26,36,.06), 0 14px 32px rgba(30,90,168,.12);
  --font: "PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color .16s ease, background-color .16s ease, border-color .16s ease}
a:hover{color:var(--brand-700)}
button{font-family:inherit}
h1,h2,h3,h4{color:var(--title);margin:0;line-height:1.35;font-weight:700}
p{margin:0 0 16px}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}

.container{width:100%;max-width:100%;padding-left:24px;padding-right:24px;margin:0 auto}
@media (min-width:768px){
  .container{padding-left:32px;padding-right:32px}
}
@media (min-width:1200px){
  .container{max-width:1200px}
}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:#fff;
  border-bottom:1px solid transparent;
  transition:box-shadow .2s ease, border-color .2s ease;
}
.site-header.is-scrolled{
  border-bottom-color:var(--line);
  box-shadow:0 4px 18px rgba(18,26,36,.06);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  min-height:72px;
}
.brand{
  display:flex;align-items:center;gap:10px;
  color:var(--title);font-weight:700;font-size:18px;letter-spacing:-.01em;
  white-space:nowrap;
}
.brand:hover{color:var(--title)}
.brand-mark{
  width:36px;height:36px;border-radius:10px;
  background:var(--brand);color:#fff;
  display:grid;place-items:center;font-size:15px;flex:0 0 auto;
}
.main-nav{display:none}
.nav-menu{display:flex;align-items:center;gap:4px}
.nav-menu a{
  position:relative;display:block;
  padding:9px 12px;border-radius:8px;
  font-size:15px;color:var(--text);
}
.nav-menu a:hover{color:var(--brand);background:var(--brand-050)}
.nav-menu a.active{color:var(--brand);font-weight:600}
.nav-menu a.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--brand);border-radius:2px;
}
.header-actions{display:flex;align-items:center;gap:10px}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:10px 20px;
  border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:background-color .16s ease, color .16s ease, border-color .16s ease, transform .16s ease, box-shadow .16s ease;
}
.btn-brand{background:var(--brand);color:#fff}
.btn-brand:hover{background:var(--brand-700);color:#fff;transform:translateY(-1px)}
.btn-brand:active{transform:translateY(0)}
.btn-outline-brand{background:#fff;color:var(--brand);border-color:var(--brand)}
.btn-outline-brand:hover{background:var(--brand-050);color:var(--brand-700);border-color:var(--brand-700)}
.btn-ghost{background:transparent;color:var(--brand);padding-left:6px;padding-right:6px;min-height:auto}
.btn-ghost i{transition:transform .16s ease}
.btn-ghost:hover i{transform:translateX(3px)}
.btn-on-dark{background:#fff;color:var(--dark)}
.btn-on-dark:hover{background:var(--brand-050);color:var(--dark)}
.header-actions .btn{min-height:40px;padding:8px 16px;font-size:14px}
@media (min-width:992px){
  .main-nav{display:block}
}

/* ---------- hero ---------- */
.hero-cat{
  position:relative;
  padding:56px 0 64px;
  background-color:#F5F7FB;
  background-image:
    linear-gradient(90deg, rgba(255,255,255,.97) 0%, rgba(255,255,255,.92) 42%, rgba(255,255,255,.55) 72%, rgba(245,247,251,.35) 100%),
    url("/assets/images/backpic/back-2.webp");
  background-size:cover, cover;
  background-position:center, center;
  border-bottom:1px solid var(--line);
}
.hero-cat::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(30,90,168,.10) 1px, transparent 1px);
  background-size:22px 22px;
  opacity:.5;pointer-events:none;
}
.hero-inner{position:relative;z-index:1}
.crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--muted);margin-bottom:20px;
}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--brand)}
.crumb .sep{color:#C3CDDB}
.crumb .current{color:var(--text);font-weight:600}

.hero-grid{
  display:grid;grid-template-columns:1fr;gap:40px;align-items:center;
}
.hero-copy h1{
  font-size:28px;line-height:1.32;letter-spacing:-.01em;margin-bottom:18px;
}
.hero-lead{
  font-size:16px;line-height:1.85;color:var(--text);max-width:560px;margin-bottom:14px;
}
.hero-lead strong{color:var(--brand-700)}
.hero-btns{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.trust-row{
  display:grid;grid-template-columns:1fr;gap:12px;margin-top:32px;
  padding-top:24px;border-top:1px solid var(--line);
}
.trust-item{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--text)}
.trust-item i{color:var(--accent);font-size:14px}

.hero-media{position:relative}
.hero-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--radius-card);
  border:1px solid var(--line);
  box-shadow:var(--shadow-1);
}
.badge-data{
  position:absolute;left:18px;bottom:18px;
  display:flex;align-items:center;gap:12px;
  background:#fff;border:1px solid var(--line);border-radius:14px;
  padding:12px 18px;box-shadow:var(--shadow-2);
}
.badge-data .num{
  font-size:24px;font-weight:700;color:var(--accent);
  font-variant-numeric:tabular-nums;line-height:1;
}
.badge-data .txt{font-size:12px;color:var(--muted);line-height:1.5}

@media (min-width:768px){
  .trust-row{grid-template-columns:repeat(3,1fr);gap:20px}
}
@media (min-width:992px){
  .hero-cat{padding:72px 0 88px}
  .hero-grid{grid-template-columns:1.05fr .95fr;gap:56px}
  .hero-copy h1{font-size:40px;line-height:1.28}
  .hero-lead{font-size:16px}
}

/* ---------- sections ---------- */
.section{padding:56px 0}
.section-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:32px}
.kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:.06em;
  color:var(--brand);background:var(--brand-050);
  border-radius:999px;padding:5px 12px;margin-bottom:14px;
}
.section-head h2{
  position:relative;font-size:24px;line-height:1.4;padding-left:14px;margin-bottom:14px;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:3px;background:var(--brand);
}
.section-head p{color:var(--muted);font-size:15px;margin-bottom:0;max-width:640px}
@media (min-width:992px){
  .section{padding:96px 0}
  .section-head h2{font-size:30px;line-height:1.35}
  .section-head{margin-bottom:44px}
}

/* ---------- waterfall ---------- */
.waterfall{column-count:1;column-gap:24px}
.wf-card{
  break-inside:avoid;
  display:inline-block;width:100%;
  margin-bottom:24px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);
  padding:22px;
  transition:box-shadow .2s ease, transform .2s ease;
}
.wf-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px)}
.wf-card img{
  width:100%;border-radius:var(--radius-img);border:1px solid var(--line);
  margin-bottom:18px;object-fit:cover;
}
.wf-card img.r-16-9{aspect-ratio:16/9}
.wf-card img.r-4-3{aspect-ratio:4/3}
.wf-card img.r-1-1{aspect-ratio:1/1}
.wf-card h3{font-size:19px;line-height:1.5;margin-bottom:10px}
.wf-card p{font-size:15px;line-height:1.8;margin-bottom:12px}
.wf-card p:last-child{margin-bottom:0}
.wf-tag{
  display:inline-block;font-size:12px;font-weight:600;letter-spacing:.02em;
  color:var(--brand);background:var(--brand-050);
  border-radius:999px;padding:4px 12px;margin-bottom:14px;
}
.wf-meta{
  display:flex;flex-wrap:wrap;gap:6px 16px;
  margin-top:16px;padding-top:14px;border-top:1px solid var(--line);
  font-size:13px;color:var(--muted);
}
.wf-meta span{display:inline-flex;align-items:center;gap:6px}
.wf-meta i{color:var(--brand)}
@media (min-width:768px){
  .waterfall{column-count:2}
}

/* ---------- quote + checklist ---------- */
.split{
  display:grid;grid-template-columns:1fr;gap:32px;align-items:start;
}
.quote-block{
  background:var(--brand-050);
  border-left:3px solid var(--brand);
  border-radius:0 var(--radius-img) var(--radius-img) 0;
  padding:24px 26px;
}
.quote-block p{
  font-size:17px;line-height:1.8;color:var(--brand-700);font-weight:600;margin-bottom:12px;
}
.quote-block .quote-note{font-size:14px;line-height:1.85;color:var(--text);font-weight:400;margin-bottom:0}

.check-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);padding:24px;
}
.check-card h3{font-size:19px;margin-bottom:6px}
.check-card .sub{font-size:14px;color:var(--muted);margin-bottom:18px}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;
  padding:12px 0;border-bottom:1px dashed var(--line);
  font-size:15px;line-height:1.75;
}
.check-list li:last-child{border-bottom:0;padding-bottom:0}
.check-list i{
  color:#fff;background:var(--accent);
  width:20px;height:20px;border-radius:999px;
  display:grid;place-items:center;font-size:10px;flex:0 0 auto;margin-top:5px;
}
.check-list strong{color:var(--title)}

@media (min-width:992px){
  .split{grid-template-columns:1.1fr .9fr;gap:48px}
}

/* ---------- mini stats ---------- */
.stat-grid{
  display:grid;grid-template-columns:1fr;gap:18px;margin-top:32px;
}
.stat-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);padding:22px;
}
.stat-card .num{
  font-size:30px;font-weight:700;color:var(--accent);
  font-variant-numeric:tabular-nums;line-height:1.1;margin-bottom:6px;
}
.stat-card .lbl{font-size:14px;color:var(--muted)}
.stat-card .note{font-size:12px;color:var(--muted);margin-top:8px;line-height:1.6}
@media (min-width:768px){.stat-grid{grid-template-columns:repeat(3,1fr);gap:24px}}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px}
.accordion-item{
  background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;
  margin-bottom:14px;box-shadow:var(--shadow-1);
}
.accordion-button{
  width:100%;display:flex;align-items:center;gap:16px;
  background:#fff;border:0;text-align:left;
  padding:18px 22px;min-height:56px;
  font-size:16px;font-weight:600;color:var(--title);
  box-shadow:none;
}
.accordion-button:not(.collapsed){background:var(--brand-050);color:var(--brand)}
.accordion-button:focus{box-shadow:0 0 0 3px rgba(30,90,168,.16);border:0}
.accordion-button::after{
  content:"";background-image:none !important;
  width:9px;height:9px;margin-left:auto;flex:0 0 auto;
  border-right:2px solid var(--muted);border-bottom:2px solid var(--muted);
  transform:rotate(45deg);transition:transform .2s ease,border-color .2s ease;
}
.accordion-button:not(.collapsed)::after{
  transform:rotate(-135deg);border-color:var(--brand);
}
.accordion-body{
  padding:4px 22px 22px;font-size:15px;line-height:1.85;color:var(--text);
}
.accordion-body p:last-child{margin-bottom:0}

/* ---------- CTA band ---------- */
.cta-band{
  background:var(--dark);
  background-image:linear-gradient(180deg, rgba(255,255,255,.05) 0%, rgba(255,255,255,0) 100%);
  color:#fff;
  padding:56px 0;
}
.cta-inner{
  display:grid;grid-template-columns:1fr;gap:26px;align-items:center;
}
.cta-band h2{color:#fff;font-size:24px;line-height:1.4;margin-bottom:12px}
.cta-band p{color:rgba(255,255,255,.78);font-size:15px;margin-bottom:0;max-width:620px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
@media (min-width:992px){
  .cta-band{padding:72px 0}
  .cta-inner{grid-template-columns:1.4fr .6fr;gap:40px}
  .cta-band h2{font-size:28px}
  .cta-actions{justify-content:flex-end}
}

/* ---------- related ---------- */
.related{
  display:grid;grid-template-columns:1fr;gap:14px;
}
.related a{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  background:#fff;border:1px solid var(--line);border-radius:14px;
  padding:18px 22px;color:var(--title);font-weight:600;font-size:15px;
  box-shadow:var(--shadow-1);
  transition:box-shadow .2s ease,transform .2s ease,border-color .2s ease;
}
.related a:hover{
  border-color:var(--brand);color:var(--brand);
  box-shadow:var(--shadow-2);transform:translateY(-2px);
}
.related a span{display:flex;align-items:center;gap:10px}
.related a i.lead{color:var(--brand)}
.related a i.arrow{color:var(--muted);transition:transform .16s ease}
.related a:hover i.arrow{transform:translateX(3px);color:var(--brand)}
@media (min-width:768px){.related{grid-template-columns:repeat(3,1fr)}}

/* ---------- footer ---------- */
.site-footer{
  background:var(--dark);color:rgba(255,255,255,.72);
  padding:56px 0 28px;font-size:14px;
}
.footer-grid{
  display:grid;grid-template-columns:1fr;gap:32px;
}
.footer-brand{
  display:flex;align-items:center;gap:10px;
  color:#fff;font-weight:700;font-size:17px;margin-bottom:14px;
}
.site-footer .brand-mark{background:rgba(255,255,255,.12);color:#fff}
.site-footer p{color:rgba(255,255,255,.66);line-height:1.8;margin-bottom:0;max-width:340px}
.site-footer h4{
  color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;letter-spacing:.01em;
}
.footer-links li,.footer-contact li{margin-bottom:10px}
.footer-links a{color:rgba(255,255,255,.72)}
.footer-links a:hover{color:#fff;text-decoration:underline}
.footer-contact li{display:flex;align-items:flex-start;gap:10px;line-height:1.7}
.footer-contact i{color:var(--accent);margin-top:4px;font-size:13px;flex:0 0 auto}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:8px 20px;justify-content:space-between;
  margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;color:rgba(255,255,255,.55);
}
@media (min-width:768px){
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px}
}
@media (min-width:992px){
  .site-footer{padding:72px 0 30px}
}

/* ---------- mobile tabbar ---------- */
.mobile-tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:1040;
  display:flex;align-items:stretch;
  background:#fff;border-top:1px solid var(--line);
  height:56px;
  padding-bottom:env(safe-area-inset-bottom);
  box-shadow:0 -4px 18px rgba(18,26,36,.06);
}
.tab-item{
  flex:1 1 0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  min-height:44px;font-size:11px;color:var(--muted);
}
.tab-item i{font-size:16px}
.tab-item.active{color:var(--brand);font-weight:600}
.tab-item:hover{color:var(--brand)}
body{padding-bottom:70px}
@media (min-width:992px){
  .mobile-tabbar{display:none}
  body{padding-bottom:0}
}

/* ---------- back to top ---------- */
.to-top{
  position:fixed;right:18px;bottom:76px;z-index:1035;
  width:44px;height:44px;border-radius:999px;
  background:#fff;color:var(--brand);border:1px solid var(--line);
  box-shadow:var(--shadow-2);
  display:grid;place-items:center;
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .2s ease,transform .2s ease,visibility .2s ease;
}
.to-top.is-show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:var(--brand);color:#fff;border-color:var(--brand)}
@media (min-width:992px){
  .to-top{right:28px;bottom:28px}
}