/* roulang page: index */
:root{
  --c-primary:#14507F;
  --c-primary-700:#0F3C60;
  --c-primary-soft:#EAF2FA;
  --c-accent:#0FA3A3;
  --c-accent-soft:#E6F6F6;
  --c-cta:#FF7A29;
  --c-bg:#F5F8FC;
  --c-surface:#FFFFFF;
  --c-border:#E2E9F3;
  --c-text:#0D1B2A;
  --c-muted:#5A6B80;
  --r-card:14px;
  --r-hero:18px;
  --r-btn:10px;
  --sh-card:0 6px 24px -8px rgba(20,80,127,.14);
  --sh-card-hover:0 14px 36px -10px rgba(20,80,127,.24);
  --sh-hair:0 1px 2px rgba(13,27,42,.05);
  --side-w:256px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.9;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;background:#EEF3F9;}
a{color:inherit;text-decoration:none;}
button,input,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;box-shadow:0 0 0 4px #fff;}
::selection{background:#D6E6F5;color:var(--c-primary-700);}
::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-thumb{background:#CBD8E7;border-radius:999px;border:2px solid var(--c-bg);}
::-webkit-scrollbar-track{background:var(--c-bg);}

.container{width:100%;max-width:1180px;margin:0 auto;padding-left:20px;padding-right:20px;}
.section{padding-top:64px;padding-bottom:64px;}
@media (min-width:1024px){ .section{padding-top:96px;padding-bottom:96px;} }

/* ============ 左侧导航 ============ */
.side-nav{
  display:none;
  position:fixed;top:0;left:0;bottom:0;width:var(--side-w);
  background:var(--c-surface);
  border-right:1px solid var(--c-border);
  z-index:60;
  flex-direction:column;
  padding:22px 18px 20px;
}
@media (min-width:1024px){ .side-nav{display:flex;} }
.site-main{min-height:100vh;}
@media (min-width:1024px){ .site-main{margin-left:var(--side-w);} }

.brand{display:flex;align-items:center;gap:12px;}
.brand-mark{
  width:40px;height:40px;flex:0 0 40px;border-radius:10px;
  background:linear-gradient(135deg,var(--c-primary) 0%,var(--c-accent) 100%);
  color:#fff;font-weight:700;font-size:18px;
  display:flex;align-items:center;justify-content:center;
  position:relative;overflow:hidden;
}
.brand-mark::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(115deg,transparent 42%,rgba(255,255,255,.35) 46%,transparent 52%);
}
.brand-text{display:flex;flex-direction:column;line-height:1.35;}
.brand-text b{font-size:15px;font-weight:700;letter-spacing:.01em;color:var(--c-text);}
.brand-text span{font-size:11px;letter-spacing:.14em;color:var(--c-muted);text-transform:uppercase;}

.nav-group{margin-top:28px;}
.nav-label{
  font-size:13px;letter-spacing:.08em;color:var(--c-muted);
  padding:0 10px 10px;font-weight:500;
}
.nav-item{
  display:flex;align-items:center;gap:10px;
  padding:10px 12px;border-radius:8px;
  font-size:15px;color:var(--c-text);
  position:relative;
  transition:background .18s ease-out,color .18s ease-out;
  margin-bottom:2px;
}
.nav-item i{width:18px;text-align:center;font-size:14px;color:var(--c-muted);transition:color .18s ease-out;}
.nav-item:hover{background:#F3F6FB;}
.nav-item:hover i{color:var(--c-primary);}
.nav-item.is-active{
  background:var(--c-primary-soft);color:var(--c-primary);font-weight:600;
}
.nav-item.is-active i{color:var(--c-primary);}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;border-radius:0 3px 3px 0;background:var(--c-cta);
}
.side-foot{margin-top:auto;padding-top:22px;}
.side-cta{
  display:block;text-align:center;
  background:var(--c-cta);color:#fff;font-weight:600;font-size:15px;
  padding:12px 16px;border-radius:var(--r-btn);
  transition:background .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out;
}
.side-cta:hover{background:#F06C19;transform:translateY(-1px);box-shadow:0 10px 24px -8px rgba(255,122,41,.45);}
.side-cta:active{transform:translateY(0);}
.side-note{margin-top:14px;font-size:13px;line-height:1.8;color:var(--c-muted);}

/* ============ 移动端顶栏 ============ */
.top-bar{
  position:sticky;top:0;z-index:70;
  height:60px;background:var(--c-surface);
  border-bottom:1px solid var(--c-border);
  display:flex;align-items:center;justify-content:space-between;
  padding:0 16px;
  transition:box-shadow .2s ease-out;
}
.top-bar.is-scrolled{box-shadow:0 4px 18px -10px rgba(20,80,127,.35);}
@media (min-width:1024px){ .top-bar{display:none;} }
.top-brand{display:flex;align-items:center;gap:10px;}
.top-brand .brand-mark{width:34px;height:34px;flex:0 0 34px;border-radius:9px;font-size:15px;}
.top-brand b{font-size:14px;font-weight:700;}
.burger{
  width:40px;height:40px;border:1px solid var(--c-border);background:#fff;
  border-radius:10px;display:flex;align-items:center;justify-content:center;
  color:var(--c-primary);cursor:pointer;transition:background .18s ease-out;
}
.burger:hover{background:var(--c-primary-soft);}

.drawer-mask{
  position:fixed;inset:0;background:rgba(13,27,42,.45);
  opacity:0;visibility:hidden;transition:opacity .25s ease-out,visibility .25s ease-out;z-index:80;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;left:0;bottom:0;width:80%;max-width:320px;
  background:var(--c-surface);z-index:90;
  transform:translateX(-100%);transition:transform .28s ease-out;
  padding:20px 18px;display:flex;flex-direction:column;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px;}
.drawer-close{
  width:36px;height:36px;border-radius:10px;border:1px solid var(--c-border);background:#fff;
  color:var(--c-muted);cursor:pointer;
}
.drawer-close:hover{background:var(--c-primary-soft);color:var(--c-primary);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1.2;
  border:1px solid transparent;cursor:pointer;
  transition:background .18s ease-out,color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.btn-primary{background:var(--c-cta);color:#fff;}
.btn-primary:hover{background:#F06C19;transform:translateY(-1px);box-shadow:0 10px 24px -8px rgba(255,122,41,.45);}
.btn-primary:active{transform:translateY(0);box-shadow:none;}
.btn-ghost{background:#fff;color:var(--c-primary);border-color:var(--c-border);}
.btn-ghost:hover{background:var(--c-primary-soft);border-color:#C9DCEF;}
.btn-white{background:#fff;color:var(--c-primary);}
.btn-white:hover{background:#EDF4FB;transform:translateY(-1px);}
.btn-outline-white{background:transparent;color:#fff;border-color:rgba(255,255,255,.7);}
.btn-outline-white:hover{background:rgba(255,255,255,.14);transform:translateY(-1px);}

/* ============ 通用元素 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 11px;border-radius:999px;
  font-size:12px;font-weight:500;line-height:1.6;
  background:var(--c-primary-soft);color:var(--c-primary);
}
.badge-accent{background:var(--c-accent-soft);color:#0B7F7F;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.08em;color:var(--c-primary);font-weight:600;
}
.eyebrow::before{content:"";width:3px;height:14px;border-radius:2px;background:var(--c-cta);}
.sec-title{
  font-size:clamp(24px,2.6vw,32px);font-weight:700;line-height:1.35;letter-spacing:-.01em;
  margin-top:14px;
}
.sec-sub{font-size:16px;line-height:1.9;color:var(--c-muted);margin-top:12px;max-width:720px;}
.h3{font-size:20px;font-weight:600;line-height:1.5;}
.muted{color:var(--c-muted);font-size:15px;line-height:1.8;}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;
  background:
    radial-gradient(900px 420px at 12% -10%, rgba(20,80,127,.10), transparent 70%),
    radial-gradient(700px 380px at 88% 8%, rgba(15,163,163,.10), transparent 72%),
    var(--c-bg);
  border-bottom:1px solid var(--c-border);
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(20,80,127,.05) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(20,80,127,.05) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 78%);
  pointer-events:none;
}
.hero-inner{position:relative;display:grid;gap:40px;padding-top:56px;padding-bottom:64px;}
@media (min-width:1024px){
  .hero-inner{grid-template-columns:1.05fr .95fr;align-items:center;gap:56px;padding-top:88px;padding-bottom:96px;}
}
.hero h1{
  font-size:clamp(30px,4vw,44px);font-weight:700;line-height:1.28;letter-spacing:-.01em;
  margin-top:18px;
}
.hero-lead{
  font-size:18px;line-height:1.85;color:var(--c-muted);margin-top:18px;max-width:560px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-trust{display:flex;flex-wrap:wrap;gap:12px 22px;margin-top:32px;}
.trust-item{display:flex;align-items:center;gap:9px;font-size:14px;color:var(--c-muted);}
.trust-item i{
  width:28px;height:28px;border-radius:9px;background:var(--c-primary-soft);color:var(--c-primary);
  display:inline-flex;align-items:center;justify-content:center;font-size:13px;
}
.hero-media{position:relative;}
.hero-media img{
  width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:var(--r-hero);
  box-shadow:var(--sh-card);border:1px solid var(--c-border);
}
.hero-float{
  position:absolute;right:-6px;bottom:-18px;
  background:#fff;border:1px solid var(--c-border);border-radius:10px;
  box-shadow:var(--sh-card);padding:12px 16px;display:flex;align-items:center;gap:12px;
  min-width:190px;
}
@media (max-width:520px){ .hero-float{right:8px;bottom:-14px;min-width:0;padding:10px 12px;} }
.hero-float .num{font-size:26px;font-weight:700;color:var(--c-primary);line-height:1.1;}
.hero-float .lbl{font-size:12px;color:var(--c-muted);line-height:1.6;}

/* ============ 三步 ============ */
.steps{position:relative;display:grid;gap:26px;margin-top:44px;}
@media (min-width:768px){ .steps{grid-template-columns:repeat(3,1fr);gap:28px;} }
.steps::before{display:none;}
@media (min-width:768px){
  .steps::before{
    content:"";display:block;position:absolute;left:22px;right:22px;top:19px;
    border-top:1px dashed #B9CEE3;z-index:0;
  }
}
.step{position:relative;z-index:1;background:transparent;}
.step-num{
  width:38px;height:38px;border-radius:999px;background:#fff;border:1px solid #C9DCEF;
  color:var(--c-primary);font-weight:700;font-size:15px;
  display:flex;align-items:center;justify-content:center;
}
.step h3{font-size:17px;font-weight:600;margin-top:16px;}
.step p{font-size:15px;line-height:1.85;color:var(--c-muted);margin-top:8px;}

/* ============ 能力卡 ============ */
.ability{display:grid;gap:24px;margin-top:44px;}
@media (min-width:768px){ .ability{grid-template-columns:1.2fr 1fr;} }
.ability-main{
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);
  box-shadow:var(--sh-card);padding:28px;display:flex;flex-direction:column;gap:18px;
  transition:box-shadow .22s ease-out,transform .22s ease-out;
}
.ability-main:hover{box-shadow:var(--sh-card-hover);transform:translateY(-3px);}
.ability-main img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:12px;}
.ability-side{display:grid;gap:24px;}
@media (min-width:520px) and (max-width:767px){ .ability-side{grid-template-columns:1fr 1fr;} }
.ability-mini{
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);
  box-shadow:var(--sh-card);padding:22px;
  transition:box-shadow .22s ease-out,transform .22s ease-out;
}
.ability-mini:hover{box-shadow:var(--sh-card-hover);transform:translateY(-3px);}
.ability-mini h3{font-size:17px;font-weight:600;margin-top:14px;}
.ability-mini p{font-size:14px;line-height:1.85;color:var(--c-muted);margin-top:8px;}
.icon-block{
  width:40px;height:40px;border-radius:12px;background:var(--c-accent-soft);color:#0B7F7F;
  display:flex;align-items:center;justify-content:center;font-size:16px;
}

/* ============ 数据条 ============ */
.stats{
  background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-card);
  box-shadow:var(--sh-card);display:grid;gap:0;overflow:hidden;
}
@media (min-width:768px){ .stats{grid-template-columns:repeat(4,1fr);} }
.stat{padding:26px 22px;border-bottom:1px solid var(--c-border);}
@media (min-width:768px){ .stat{border-bottom:none;border-right:1px solid var(--c-border);} .stat:last-child{border-right:none;} }
.stat .num{font-size:32px;font-weight:700;color:var(--c-primary);line-height:1.2;}
.stat .num small{font-size:15px;font-weight:600;margin-left:2px;}
.stat .lbl{font-size:14px;color:var(--c-muted);margin-top:6px;}

/* ============ 图文交替 ============ */
.case-row{
  display:grid;gap:28px;align-items:center;
  padding:28px 0;border-bottom:1px solid var(--c-border);
}
.case-row:last-child{border-bottom:none;}
@media (min-width:768px){ .case-row{grid-template-columns:1fr 1fr;gap:48px;} .case-row.reverse .case-media{order:2;} }
.case-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-hero);
  box-shadow:var(--sh-card);border:1px solid var(--c-border);
}
.case-point{font-size:32px;font-weight:700;color:var(--c-primary);line-height:1.2;}
.case-point span{font-size:14px;font-weight:500;color:var(--c-muted);display:block;margin-top:4px;}
.case-row h3{font-size:20px;font-weight:600;margin-top:10px;}
.case-row p{font-size:15px;line-height:1.9;color:var(--c-muted);margin-top:12px;}

/* ============ 内容列表 ============ */
.list-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;}
.text-link{
  font-size:14px;color:var(--c-primary);font-weight:600;display:inline-flex;align-items:center;gap:6px;
  transition:gap .18s ease-out,color .18s ease-out;
}
.text-link:hover{gap:10px;color:var(--c-primary-700);}
.feature-card{
  display:grid;gap:0;background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);
  box-shadow:var(--sh-card);overflow:hidden;margin-top:36px;
  transition:box-shadow .22s ease-out,transform .22s ease-out;
}
@media (min-width:768px){ .feature-card{grid-template-columns:1.05fr 1fr;} }
.feature-card:hover{box-shadow:var(--sh-card-hover);transform:translateY(-3px);}
.feature-card .thumb{overflow:hidden;}
.feature-card .thumb img{width:100%;height:100%;min-height:230px;aspect-ratio:16/9;object-fit:cover;transition:transform .3s ease-out;}
.feature-card:hover .thumb img{transform:scale(1.03);}
.feature-body{padding:26px;display:flex;flex-direction:column;}
.feature-body h3{font-size:19px;font-weight:600;line-height:1.55;margin-top:14px;}
.feature-body p{font-size:14px;line-height:1.85;color:var(--c-muted);margin-top:12px;}
.meta{display:flex;align-items:center;gap:12px;margin-top:auto;padding-top:18px;font-size:13px;color:var(--c-muted);}
.meta i{font-size:12px;}

.grid-cards{display:grid;gap:24px;margin-top:28px;}
@media (min-width:640px){ .grid-cards{grid-template-columns:1fr 1fr;} }
@media (min-width:1024px){ .grid-cards{grid-template-columns:repeat(3,1fr);} }
.mini-card{
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);
  box-shadow:var(--sh-card);overflow:hidden;display:flex;flex-direction:column;
  transition:box-shadow .22s ease-out,transform .22s ease-out;
}
.mini-card:hover{box-shadow:var(--sh-card-hover);transform:translateY(-3px);}
.mini-card .thumb{overflow:hidden;}
.mini-card .thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .3s ease-out;}
.mini-card:hover .thumb img{transform:scale(1.03);}
.mini-card .body{padding:20px;display:flex;flex-direction:column;flex:1;}
.mini-card h3{
  font-size:17px;font-weight:600;line-height:1.6;margin-top:12px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.mini-card p{
  font-size:14px;line-height:1.8;color:var(--c-muted);margin-top:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.empty-state{
  margin-top:36px;background:#fff;border:1px dashed #C9DCEF;border-radius:var(--r-card);
  padding:48px 24px;text-align:center;
}
.empty-state i{font-size:26px;color:#A9BFD6;}
.empty-state p{font-size:15px;color:var(--c-muted);margin-top:14px;}
.empty-state .btn{margin-top:20px;}

/* ============ FAQ ============ */
.faq-wrap{display:grid;gap:26px;margin-top:40px;}
@media (min-width:1024px){ .faq-wrap{grid-template-columns:.32fr .68fr;gap:40px;} }
.faq-q{
  display:block;width:100%;text-align:left;background:transparent;border:none;cursor:pointer;
  padding:14px 14px 14px 16px;border-radius:10px;position:relative;
  font-size:15px;font-weight:600;color:var(--c-text);line-height:1.7;
  transition:background .18s ease-out,color .18s ease-out;
}
.faq-q:hover{background:#F3F6FB;}
.faq-q.is-active{background:var(--c-primary-soft);color:var(--c-primary);}
.faq-q.is-active::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;border-radius:3px;background:var(--c-cta);
}
.faq-panel{
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);
  box-shadow:var(--sh-card);padding:26px;
}
.faq-panel h3{font-size:18px;font-weight:600;line-height:1.6;}
.faq-panel p{font-size:15px;line-height:1.85;color:var(--c-muted);margin-top:14px;}
.faq-acc{display:grid;gap:12px;margin-top:32px;}
@media (min-width:1024px){ .faq-acc{display:none;} }
@media (max-width:1023px){ .faq-desktop{display:none;} }
.acc-item{background:#fff;border:1px solid var(--c-border);border-radius:12px;box-shadow:var(--sh-hair);overflow:hidden;}
.acc-head{
  width:100%;background:transparent;border:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:16px 18px;font-size:15px;font-weight:600;text-align:left;line-height:1.7;
}
.acc-head i{color:var(--c-primary);font-size:13px;transition:transform .2s ease-out;}
.acc-item.is-open .acc-head i{transform:rotate(45deg);}
.acc-body{max-height:0;overflow:hidden;transition:max-height .2s ease-out;}
.acc-body p{font-size:14px;line-height:1.85;color:var(--c-muted);padding:0 18px 18px;}

/* ============ CTA ============ */
.cta-band{
  position:relative;overflow:hidden;background:var(--c-primary);color:#fff;
  border-radius:var(--r-hero);
}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(115deg,rgba(255,255,255,.07) 0 2px,transparent 2px 22px);
  pointer-events:none;
}
.cta-inner{
  position:relative;z-index:1;display:grid;gap:24px;padding:38px 30px;align-items:center;
}
@media (min-width:900px){ .cta-inner{grid-template-columns:1.4fr .6fr;padding:48px 44px;} }
.cta-inner h2{font-size:clamp(19px,2.4vw,24px);font-weight:700;line-height:1.5;}
.cta-inner p{font-size:15px;line-height:1.8;color:rgba(255,255,255,.85);margin-top:10px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
@media (min-width:900px){ .cta-actions{justify-content:flex-end;} }

/* ============ 页脚 ============ */
.site-footer{background:#fff;border-top:1px solid var(--c-border);margin-top:64px;}
.footer-grid{display:grid;gap:32px;padding:52px 0 38px;}
@media (min-width:640px){ .footer-grid{grid-template-columns:1fr 1fr;} }
@media (min-width:1024px){ .footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr;} }
.footer-col h4{font-size:14px;font-weight:600;margin-bottom:16px;letter-spacing:.02em;}
.footer-col ul li{margin-bottom:10px;}
.footer-col a{font-size:14px;color:var(--c-muted);transition:color .18s ease-out;}
.footer-col a:hover{color:var(--c-primary);text-decoration:underline;text-underline-offset:4px;}
.footer-note{font-size:14px;line-height:1.85;color:var(--c-muted);margin-top:14px;max-width:320px;}
.footer-bottom{
  border-top:1px solid var(--c-border);padding:20px 0 26px;
  display:flex;flex-direction:column;gap:8px;align-items:center;text-align:center;
  font-size:13px;color:var(--c-muted);
}
.footer-brand{display:flex;align-items:center;gap:12px;}
.footer-brand .brand-mark{width:38px;height:38px;flex:0 0 38px;border-radius:10px;font-size:16px;}
.footer-brand b{font-size:15px;font-weight:700;}
.footer-brand span{font-size:12px;letter-spacing:.12em;color:var(--c-muted);}

/* roulang page: category1 */
:root{
    --c-primary:#14507F;
    --c-primary-700:#0F3C60;
    --c-primary-50:#EAF2FA;
    --c-accent:#0FA3A3;
    --c-accent-50:#E6F6F6;
    --c-cta:#FF7A29;
    --c-cta-dark:#F06A16;
    --c-bg:#F5F8FC;
    --c-surface:#FFFFFF;
    --c-border:#E2E9F3;
    --c-text:#0D1B2A;
    --c-muted:#5A6B80;
    --r-card:14px;
    --r-panel:18px;
    --r-btn:10px;
    --sh-card:0 6px 24px -8px rgba(20,80,127,.14);
    --sh-card-hover:0 14px 36px -10px rgba(20,80,127,.24);
    --sh-soft:0 1px 2px rgba(13,27,42,.05);
    --sidebar-w:264px;
  }

  *,*::before,*::after{ box-sizing:border-box; }
  html{ scroll-behavior:smooth; }
  body{
    margin:0;
    font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
    font-size:16px;
    line-height:1.9;
    color:var(--c-text);
    background:var(--c-bg);
    -webkit-font-smoothing:antialiased;
    text-rendering:optimizeLegibility;
  }
  img{ max-width:100%; display:block; border:0; }
  a{ color:inherit; text-decoration:none; }
  button{ font:inherit; cursor:pointer; background:none; border:0; color:inherit; }
  h1,h2,h3,h4,p,ul,ol,figure{ margin:0; }
  ul{ padding:0; list-style:none; }
  :focus-visible{ outline:2px solid var(--c-primary); outline-offset:2px; border-radius:8px; }
  ::-webkit-scrollbar{ width:10px; height:10px; }
  ::-webkit-scrollbar-thumb{ background:#CBD8E8; border-radius:999px; border:3px solid var(--c-bg); }
  ::-webkit-scrollbar-track{ background:transparent; }

  .container{ width:100%; max-width:1180px; margin:0 auto; padding:0 20px; }
  @media (min-width:768px){ .container{ padding:0 28px; } }

  .page-shell{ min-height:100vh; display:flex; flex-direction:column; }
  @media (min-width:1024px){ .page-shell{ padding-left:var(--sidebar-w); } }
  main{ flex:1 1 auto; }

  /* ============ 左侧竖向导航 ============ */
  .sidebar{
    position:fixed; top:0; left:0; bottom:0; width:var(--sidebar-w);
    background:var(--c-surface); border-right:1px solid var(--c-border);
    display:flex; flex-direction:column; padding:22px 16px 20px;
    overflow-y:auto; z-index:60; transition:transform .22s ease-out;
  }
  @media (max-width:1023px){
    .sidebar{ transform:translateX(-102%); box-shadow:0 0 46px rgba(13,27,42,.22); }
    .sidebar.is-open{ transform:translateX(0); }
  }
  .sidebar-close{
    display:none; position:absolute; top:14px; right:14px; width:36px; height:36px;
    border-radius:9px; border:1px solid var(--c-border); background:#fff; color:var(--c-primary);
    place-items:center; font-size:15px;
  }
  @media (max-width:1023px){ .sidebar-close{ display:grid; } }

  .brand{ display:flex; align-items:center; gap:11px; padding:2px 6px 18px; border-bottom:1px solid var(--c-border); margin-bottom:6px; }
  .brand-mark{
    display:grid; place-items:center; width:40px; height:40px; flex:0 0 auto;
    border-radius:10px; background:linear-gradient(135deg,var(--c-primary),var(--c-primary-700));
    color:#fff; font-size:18px; font-weight:700; letter-spacing:.02em;
  }
  .brand-text{ display:block; font-size:14px; line-height:1.35; }
  .brand-text b{ display:block; font-size:15px; font-weight:700; color:var(--c-text); }
  .brand-text > span{ display:block; font-size:10px; letter-spacing:.16em; color:var(--c-muted); margin-top:3px; }

  .nav-label{ font-size:13px; letter-spacing:.08em; font-weight:600; color:var(--c-muted); margin:16px 8px 8px; }
  .nav-item{
    position:relative; display:flex; align-items:center; gap:10px;
    padding:10px 12px; border-radius:6px; font-size:14.5px; font-weight:500;
    color:#25384C; line-height:1.5; transition:background .18s ease,color .18s ease;
  }
  .nav-item i{ width:18px; text-align:center; font-size:14px; color:var(--c-muted); transition:color .18s ease; }
  .nav-item:hover{ background:#F3F6FB; color:var(--c-primary); }
  .nav-item:hover i{ color:var(--c-primary); }
  .nav-item.is-active{ background:var(--c-primary-50); color:var(--c-primary); font-weight:600; }
  .nav-item.is-active i{ color:var(--c-primary); }
  .nav-item.is-active::before{
    content:""; position:absolute; left:0; top:8px; bottom:8px; width:3px;
    border-radius:0 3px 3px 0; background:var(--c-cta);
  }
  .sidebar-cta{ margin-top:auto; padding-top:18px; border-top:1px solid var(--c-border); }
  .sidebar-cta .btn{ width:100%; justify-content:center; }
  .sidebar-cta p{ margin:10px 2px 0; font-size:12px; line-height:1.7; color:var(--c-muted); }

  /* ============ 移动端顶部条 ============ */
  .mobile-bar{
    position:sticky; top:0; z-index:55; display:flex; align-items:center; justify-content:space-between;
    gap:12px; height:60px; padding:0 16px; background:var(--c-surface);
    border-bottom:1px solid var(--c-border); transition:box-shadow .2s ease;
  }
  .mobile-bar.is-scrolled{ box-shadow:0 8px 22px -14px rgba(20,80,127,.5); }
  @media (min-width:1024px){ .mobile-bar{ display:none; } }
  .mobile-brand{ display:flex; align-items:center; gap:10px; font-size:15px; font-weight:700; min-width:0; }
  .mobile-brand .brand-mark{ width:34px; height:34px; border-radius:9px; font-size:15px; }
  .mobile-brand b{ white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
  .menu-btn{
    width:42px; height:42px; flex:0 0 auto; border-radius:var(--r-btn); border:1px solid var(--c-border);
    background:#fff; color:var(--c-primary); display:grid; place-items:center; font-size:16px; transition:.18s;
  }
  .menu-btn:hover{ background:var(--c-primary-50); }

  .overlay{
    position:fixed; inset:0; background:rgba(13,27,42,.45); z-index:58;
    opacity:0; visibility:hidden; transition:opacity .2s ease,visibility .2s ease;
  }
  .overlay.is-open{ opacity:1; visibility:visible; }
  @media (min-width:1024px){ .overlay{ display:none; } }

  /* ============ 按钮 ============ */
  .btn{
    display:inline-flex; align-items:center; justify-content:center; gap:8px;
    padding:12px 24px; border-radius:var(--r-btn); border:1px solid transparent;
    font-size:15px; font-weight:600; line-height:1.4; white-space:nowrap;
    transition:background .18s ease-out,color .18s ease-out,box-shadow .18s ease-out,transform .18s ease-out,border-color .18s ease-out;
  }
  .btn i{ font-size:13px; }
  .btn-primary{ background:var(--c-cta); color:#fff; box-shadow:0 6px 18px -10px rgba(255,122,41,.85); }
  .btn-primary:hover{ background:var(--c-cta-dark); transform:translateY(-1px); box-shadow:0 10px 24px -8px rgba(255,122,41,.45); }
  .btn-primary:active{ transform:translateY(0); }
  .btn-ghost{ background:#fff; border-color:var(--c-border); color:var(--c-primary); }
  .btn-ghost:hover{ background:var(--c-primary-50); border-color:#CFE0F1; }
  .btn-light{ background:#fff; color:var(--c-primary); }
  .btn-light:hover{ background:#EAF2FA; transform:translateY(-1px); }
  .btn-outline-light{ background:transparent; border-color:rgba(255,255,255,.62); color:#fff; }
  .btn-outline-light:hover{ background:rgba(255,255,255,.14); }

  /* ============ 通用徽章 / 链接 ============ */
  .badge{
    display:inline-flex; align-items:center; gap:6px; padding:4px 12px; border-radius:999px;
    font-size:12px; font-weight:500; line-height:1.6; background:var(--c-primary-50); color:var(--c-primary);
  }
  .badge-accent{ background:var(--c-accent-50); color:#0B7C7C; }
  .link-arrow{
    display:inline-flex; align-items:center; gap:7px; font-size:14.5px; font-weight:600;
    color:var(--c-primary); border-bottom:1px solid transparent; transition:.18s ease;
  }
  .link-arrow i{ font-size:12px; transition:transform .18s ease; }
  .link-arrow:hover{ color:var(--c-primary-700); border-bottom-color:var(--c-cta); }
  .link-arrow:hover i{ transform:translateX(3px); }

  /* ============ 面包屑 ============ */
  .crumb{ display:flex; flex-wrap:wrap; align-items:center; gap:8px; padding:20px 0 0; font-size:13px; color:var(--c-muted); }
  .crumb a:hover{ color:var(--c-primary); }
  .crumb .sep{ color:#B9CCE2; }
  .crumb .current{ color:var(--c-primary); font-weight:600; }

  /* ============ 分类主视觉横幅 ============ */
  .cat-hero{ padding-bottom:6px; }
  .cat-hero-inner{
    position:relative; margin-top:18px; overflow:hidden;
    display:grid; gap:26px; padding:26px 22px 28px;
    background:var(--c-surface); border:1px solid var(--c-border); border-radius:var(--r-panel);
    box-shadow:var(--sh-card);
  }
  .cat-hero-inner::before{
    content:""; position:absolute; left:-140px; top:-160px; width:460px; height:460px; pointer-events:none;
    background:radial-gradient(circle,rgba(20,80,127,.13),transparent 68%);
  }
  .cat-hero-inner::after{
    content:""; position:absolute; right:-80px; bottom:-120px; width:320px; height:320px; pointer-events:none;
    background:radial-gradient(circle,rgba(15,163,163,.12),transparent 70%);
  }
  @media (min-width:1024px){
    .cat-hero-inner{ grid-template-columns:1.02fr .98fr; gap:40px; align-items:center; padding:36px 40px; }
  }
  .cat-hero-text{ position:relative; z-index:1; }
  .eyebrow{ display:inline-flex; align-items:center; gap:8px; font-size:13px; font-weight:700; letter-spacing:.08em; color:var(--c-accent); }
  .eyebrow::before{ content:""; width:22px; height:2px; border-radius:2px; background:var(--c-cta); }
  .cat-hero-text h1{
    font-size:clamp(30px,4vw,44px); font-weight:700; letter-spacing:-.01em; line-height:1.28;
    margin:14px 0 12px; color:var(--c-text);
  }
  .cat-hero-text .lead{ font-size:16.5px; line-height:1.85; color:var(--c-muted); max-width:520px; }
  .hero-actions{ display:flex; flex-wrap:wrap; gap:12px; margin-top:24px; }
  .hero-tags{ display:flex; flex-wrap:wrap; gap:8px; margin-top:20px; }

  .cat-hero-media{
    position:relative; z-index:1; border-radius:var(--r-panel); overflow:hidden;
    min-height:230px; border:1px solid var(--c-border); box-shadow:var(--sh-card); background:#EDF2F8;
  }
  @media (min-width:1024px){ .cat-hero-media{ min-height:306px; } }
  .cat-hero-media img{ position:absolute; inset:0; width:100%; height:100%; object-fit:cover; }
  .hero-float{
    position:absolute; left:16px; bottom:16px; z-index:2; background:#fff; border:1px solid var(--c-border);
    border-radius:8px; padding:10px 14px; box-shadow:0 10px 26px -14px rgba(13,27,42,.55);
  }
  .hero-float b{ display:block; font-size:18px; font-weight:700; color:var(--c-primary); line-height:1.3; }
  .hero-float span{ font-size:12px; color:var(--c-muted); }

  /* ============ 数据速览条 ============ */
  .stat-strip{ display:grid; gap:14px; margin-top:22px; }
  @media (min-width:640px){ .stat-strip{ grid-template-columns:repeat(3,1fr); } }
  .stat{
    display:flex; gap:14px; align-items:flex-start; padding:20px 22px;
    background:var(--c-surface); border:1px solid var(--c-border); border-radius:var(--r-card);
    box-shadow:var(--sh-soft); transition:box-shadow .22s ease,transform .22s ease;
  }
  .stat:hover{ box-shadow:var(--sh-card); transform:translateY(-3px); }
  .stat-ico{
    width:40px; height:40px; flex:0 0 40px; border-radius:11px; display:grid; place-items:center;
    background:var(--c-accent-50); color:#0B7C7C; font-size:16px;
  }
  .stat b{ display:block; font-size:19px; font-weight:700; color:var(--c-primary); line-height:1.3; }
  .stat p{ font-size:13.5px; color:var(--c-muted); line-height:1.7; margin-top:2px; }

  /* ============ 板块 ============ */
  .section{ padding:44px 0; }
  @media (min-width:1024px){ .section{ padding:64px 0; } }
  .section-head{ max-width:740px; margin-bottom:28px; }
  .section-head h2{
    position:relative; padding-left:16px; font-size:clamp(24px,2.6vw,32px); font-weight:700;
    line-height:1.36; margin:12px 0 12px; color:var(--c-text);
  }
  .section-head h2::before{
    content:""; position:absolute; left:0; top:7px; bottom:7px; width:3px; border-radius:3px; background:var(--c-primary);
  }
  .section-head p{ font-size:15.5px; line-height:1.85; color:var(--c-muted); }

  /* ============ 图文交替宽卡 ============ */
  .feature-row{
    display:grid; gap:20px; padding:20px; margin-bottom:20px;
    background:var(--c-surface); border:1px solid var(--c-border); border-radius:var(--r-panel);
    box-shadow:var(--sh-card); transition:box-shadow .22s ease,transform .22s ease;
  }
  .feature-row:last-child{ margin-bottom:0; }
  .feature-row:hover{ box-shadow:var(--sh-card-hover); transform:translateY(-3px); }
  @media (min-width:900px){
    .feature-row{ grid-template-columns:338px 1fr; gap:30px; align-items:center; padding:24px; }
    .feature-row.is-reverse .feature-media{ order:2; }
  }
  .feature-media{
    border-radius:var(--r-card); overflow:hidden; aspect-ratio:16/10;
    background:#EDF2F8; border:1px solid var(--c-border);
  }
  .feature-media img{ width:100%; height:100%; object-fit:cover; transition:transform .24s ease; }
  .feature-row:hover .feature-media img{ transform:scale(1.03); }
  .feature-body h3{ font-size:20px; font-weight:600; margin:10px 0 8px; line-height:1.5; }
  .feature-body p{ font-size:15px; line-height:1.85; color:var(--c-muted); margin-bottom:14px; }

  /* ============ 流程 ============ */
  .flow{ display:grid; gap:18px; }
  @media (min-width:768px){ .flow{ grid-template-columns:repeat(3,1fr); gap:22px; } }
  .flow-step{
    position:relative; padding:26px 22px 24px; background:var(--c-surface);
    border:1px solid var(--c-border); border-radius:var(--r-card); box-shadow:var(--sh-soft);
    transition:box-shadow .22s ease,transform .22s ease;
  }
  .flow-step:hover{ box-shadow:var(--sh-card); transform:translateY(-3px); }
  .flow-step .num{
    display:inline-grid; place-items:center; width:42px; height:42px; border-radius:50%;
    background:var(--c-primary-50); color:var(--c-primary); font-weight:700; font-size:15px; margin-bottom:12px;
  }
  .flow-step h3{ font-size:17px; font-weight:600; margin-bottom:8px; }
  .flow-step p{ font-size:14.5px; line-height:1.82; color:var(--c-muted); }
  @media (min-width:768px){
    .flow-step:not(:last-child)::after{
      content:""; position:absolute; top:47px; right:-14px; width:28px;
      border-top:1px dashed #B9CCE2;
    }
  }

  /* ============ FAQ ============ */
  .faq-list{ display:grid; gap:12px; }
  .faq-item{
    background:var(--c-surface); border:1px solid var(--c-border); border-radius:var(--r-card);
    box-shadow:var(--sh-soft); overflow:hidden; transition:box-shadow .2s ease;
  }
  .faq-item[open]{ box-shadow:var(--sh-card); }
  .faq-item summary{
    list-style:none; cursor:pointer; display:flex; align-items:center; justify-content:space-between;
    gap:16px; padding:18px 22px; font-size:16px; font-weight:600; line-height:1.65; color:var(--c-text);
    transition:background .18s ease;
  }
  .faq-item summary::-webkit-details-marker{ display:none; }
  .faq-item summary::after{
    content:"+"; flex:0 0 auto; font-size:20px; font-weight:400; line-height:1; color:var(--c-primary);
    transition:transform .2s ease;
  }
  .faq-item[open] summary::after{ content:"−"; }
  .faq-item summary:hover{ background:#FAFCFF; }
  .faq-body{
    padding:16px 22px 20px; border-top:1px solid var(--c-border);
    font-size:15px; line-height:1.85; color:var(--c-muted);
  }

  /* ============ CTA ============ */
  .cta-band{
    position:relative; overflow:hidden; border-radius:var(--r-panel);
    background:linear-gradient(180deg,#14507F,#0F3C60);
    padding:32px 24px; color:#fff; display:grid; gap:22px; align-items:center;
  }
  @media (min-width:900px){ .cta-band{ grid-template-columns:1fr auto; padding:44px 46px; gap:32px; } }
  .cta-band::after{
    content:""; position:absolute; inset:0; pointer-events:none;
    background:repeating-linear-gradient(135deg,rgba(255,255,255,.05) 0 2px,transparent 2px 14px);
  }
  .cta-band > *{ position:relative; z-index:1; }
  .cta-band h2{ font-size:clamp(20px,2.2vw,26px); font-weight:700; line-height:1.45; margin-bottom:10px; color:#fff; padding:0; }
  .cta-band p{ font-size:14.5px; line-height:1.8; color:rgba(255,255,255,.82); }
  .cta-actions{ display:flex; flex-wrap:wrap; gap:12px; }

  /* ============ 页脚 ============ */
  .site-footer{ background:var(--c-surface); border-top:1px solid var(--c-border); margin-top:24px; padding:44px 0 24px; }
  .footer-grid{ display:grid; gap:30px; }
  @media (min-width:768px){ .footer-grid{ grid-template-columns:1.5fr 1fr 1fr 1.4fr; gap:34px; } }
  .footer-brand{ display:flex; align-items:center; gap:12px; margin-bottom:14px; }
  .footer-brand .brand-mark{ width:40px; height:40px; border-radius:10px; font-size:18px; }
  .footer-brand b{ font-size:15px; font-weight:700; }
  .footer-brand .en{ display:block; font-size:10px; letter-spacing:.16em; color:var(--c-muted); margin-top:3px; }
  .footer-col h4{ font-size:15px; font-weight:600; margin-bottom:14px; color:var(--c-text); }
  .footer-col ul{ display:grid; gap:10px; }
  .footer-col ul a{ font-size:14px; color:var(--c-muted); transition:.18s ease; }
  .footer-col ul a:hover{ color:var(--c-primary); text-decoration:underline; text-underline-offset:3px; }
  .footer-note{ font-size:13px; line-height:1.85; color:var(--c-muted); }
  .footer-bottom{
    display:flex; flex-wrap:wrap; gap:8px 18px; justify-content:space-between;
    border-top:1px solid var(--c-border); margin-top:32px; padding-top:18px;
    font-size:13px; color:var(--c-muted);
  }

  @media (max-width:519px){
    .cat-hero-inner{ padding:22px 18px 24px; }
    .hero-actions .btn{ width:100%; }
    .cta-actions .btn{ width:100%; }
  }

/* roulang page: article */
:root{
    --c-primary:#14507F;
    --c-primary-700:#0F3C60;
    --c-accent:#0FA3A3;
    --c-cta:#FF7A29;
    --c-bg:#F5F8FC;
    --c-surface:#FFFFFF;
    --c-border:#E2E9F3;
    --c-text:#0D1B2A;
    --c-muted:#5A6B80;
    --r-card:14px;
    --r-big:18px;
    --r-btn:10px;
    --sh-card:0 6px 24px -8px rgba(20,80,127,.14);
    --sh-hover:0 14px 36px -10px rgba(20,80,127,.24);
    --sh-soft:0 1px 2px rgba(13,27,42,.05);
  }
  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
  body{
    margin:0;
    font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
    font-size:16px;
    line-height:1.9;
    color:var(--c-text);
    background:var(--c-bg);
  }
  img{max-width:100%;display:block;object-fit:cover}
  a{color:inherit;text-decoration:none;transition:color .18s ease,opacity .18s ease}
  button{font:inherit;cursor:pointer;border:0;background:none}
  h1,h2,h3,h4,p,ul,ol,figure{margin:0}
  ul,ol{padding-left:0;list-style:none}
  :focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;box-shadow:0 0 0 4px rgba(255,255,255,.9);border-radius:6px}
  ::-webkit-scrollbar{width:10px;height:10px}
  ::-webkit-scrollbar-track{background:#EDF2F9}
  ::-webkit-scrollbar-thumb{background:#C6D6E8;border-radius:8px;border:2px solid #EDF2F9}
  ::-webkit-scrollbar-thumb:hover{background:#A9C1DC}

  .container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px}

  /* ---------- 左侧竖向导航 ---------- */
  .side-nav{
    position:fixed;top:0;left:0;bottom:0;width:280px;max-width:84%;
    background:var(--c-surface);border-right:1px solid var(--c-border);
    padding:20px 16px 24px;display:flex;flex-direction:column;gap:20px;
    overflow-y:auto;z-index:60;transform:translateX(-100%);
    transition:transform .24s ease;box-shadow:var(--sh-card);
  }
  .side-nav.is-open{transform:translateX(0)}
  .side-brand{display:flex;align-items:center;gap:12px;padding:4px 6px 14px;border-bottom:1px solid var(--c-border)}
  .brand-mark{
    width:40px;height:40px;flex:0 0 40px;border-radius:10px;
    background:linear-gradient(135deg,var(--c-primary) 0%,var(--c-primary-700) 60%,#1B6397 100%);
    color:#fff;font-size:19px;font-weight:700;display:flex;align-items:center;justify-content:center;
    letter-spacing:.02em;box-shadow:0 6px 16px -8px rgba(20,80,127,.6);position:relative;overflow:hidden;
  }
  .brand-mark::after{content:"";position:absolute;right:-12px;bottom:-12px;width:28px;height:28px;border-radius:50%;background:rgba(15,163,163,.55)}
  .brand-text{display:flex;flex-direction:column;line-height:1.35;min-width:0}
  .brand-text b{font-size:15px;font-weight:700;letter-spacing:.01em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .brand-text span{font-size:11px;color:var(--c-muted);letter-spacing:.16em}
  .nav-group{display:flex;flex-direction:column;gap:4px;margin-bottom:14px}
  .nav-label{font-size:13px;letter-spacing:.08em;color:var(--c-muted);padding:0 12px 6px;font-weight:500}
  .nav-item{
    position:relative;display:flex;align-items:center;gap:10px;
    padding:10px 12px;border-radius:8px;color:var(--c-muted);
    font-size:15px;font-weight:500;transition:background .18s ease,color .18s ease;
  }
  .nav-item i{width:20px;text-align:center;font-size:14px}
  .nav-item:hover{background:#F3F6FB;color:var(--c-text)}
  .nav-item.is-active{background:#EAF2FA;color:var(--c-primary);font-weight:600}
  .nav-item.is-active::before{
    content:"";position:absolute;left:0;top:8px;bottom:8px;width:3px;
    border-radius:0 3px 3px 0;background:var(--c-accent);
  }
  .nav-item.is-active i{color:var(--c-primary)}
  .side-cta{margin-top:auto;padding-top:16px;border-top:1px solid var(--c-border);display:flex;flex-direction:column;gap:10px}
  .side-cta p{font-size:13px;line-height:1.75;color:var(--c-muted)}
  .nav-close{display:flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:9px;color:var(--c-muted);background:#F3F6FB;position:absolute;top:16px;right:14px}
  .nav-close:hover{background:#EAF2FA;color:var(--c-primary)}

  .nav-overlay{
    position:fixed;inset:0;background:rgba(13,27,42,.45);
    opacity:0;visibility:hidden;transition:opacity .22s ease,visibility .22s ease;z-index:55;
  }
  .nav-overlay.is-open{opacity:1;visibility:visible}

  .mobile-bar{
    position:sticky;top:0;z-index:40;height:60px;background:rgba(255,255,255,.96);
    backdrop-filter:blur(8px);border-bottom:1px solid var(--c-border);
    display:flex;align-items:center;justify-content:space-between;padding:0 16px;
  }
  .mobile-bar .brand-mini{display:flex;align-items:center;gap:10px;min-width:0}
  .brand-mini .brand-mark{width:34px;height:34px;flex:0 0 34px;font-size:16px;border-radius:9px}
  .brand-mini b{font-size:15px;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .hamburger{width:42px;height:42px;border-radius:10px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;background:#F3F6FB}
  .hamburger:hover{background:#EAF2FA}
  .hamburger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--c-primary)}

  .content-shell{padding-left:0}
  @media (min-width:1024px){
    .side-nav{width:256px;max-width:none;transform:none;box-shadow:none;padding:24px 18px}
    .nav-close{display:none}
    .mobile-bar{display:none}
    .nav-overlay{display:none}
    .content-shell{padding-left:256px}
  }

  /* ---------- 按钮 / 徽章 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    padding:12px 24px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
    transition:background .18s ease,transform .18s ease,box-shadow .18s ease,color .18s ease,border-color .18s ease;
    border:1px solid transparent;white-space:nowrap;
  }
  .btn-cta{background:var(--c-cta);color:#fff;box-shadow:0 8px 20px -10px rgba(255,122,41,.7)}
  .btn-cta:hover{background:#F06C1B;transform:translateY(-1px);box-shadow:0 10px 24px -8px rgba(255,122,41,.45)}
  .btn-cta:active{transform:translateY(0)}
  .btn-outline{background:#fff;border-color:var(--c-border);color:var(--c-primary)}
  .btn-outline:hover{background:#EAF2FA;border-color:#C9DCF0}
  .btn-light{background:#fff;color:var(--c-primary)}
  .btn-light:hover{background:#EAF2FA;transform:translateY(-1px)}
  .btn-ghost-light{background:transparent;border-color:rgba(255,255,255,.65);color:#fff}
  .btn-ghost-light:hover{background:rgba(255,255,255,.14)}
  .btn-block{width:100%}

  .badge{
    display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;
    font-size:12px;font-weight:500;line-height:1.7;background:#EAF2FA;color:var(--c-primary);
  }
  .badge-accent{background:#E6F6F6;color:#0B7E7E}
  .badge-glass{background:rgba(255,255,255,.18);color:#fff;border:1px solid rgba(255,255,255,.3)}

  /* ---------- 文章头部横幅 ---------- */
  .article-hero{
    position:relative;color:#fff;padding:40px 0 52px;overflow:hidden;
    background-image:
      linear-gradient(115deg,rgba(15,60,96,.95) 0%,rgba(20,80,127,.88) 55%,rgba(15,163,163,.74) 100%),
      url('/assets/images/backpic/back-1.png');
    background-size:cover;background-position:center;
  }
  .article-hero::after{
    content:"";position:absolute;right:-80px;top:-60px;width:320px;height:320px;border-radius:50%;
    background:radial-gradient(circle,rgba(255,255,255,.14) 0%,rgba(255,255,255,0) 70%);
  }
  .breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.78);flex-wrap:wrap;position:relative;z-index:2}
  .breadcrumb a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
  .breadcrumb .sep{opacity:.55}
  .breadcrumb .crumb-cat{color:rgba(255,255,255,.92)}
  .breadcrumb .crumb-current{color:#FFD9BE;max-width:340px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .article-hero h1{
    position:relative;z-index:2;margin:18px 0 0;max-width:860px;
    font-size:clamp(26px,3.4vw,40px);line-height:1.42;font-weight:700;letter-spacing:-.01em;
    text-shadow:0 2px 18px rgba(6,28,48,.35);
  }
  .meta-row{position:relative;z-index:2;display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-top:18px;font-size:13px;color:rgba(255,255,255,.85)}
  .meta-item{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:inherit}
  .meta-item i{font-size:12px;opacity:.85}

  /* ---------- 正文 ---------- */
  .main{padding:48px 0 0}
  .article-shell{
    background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-big);
    box-shadow:var(--sh-card);padding:36px 24px 40px;
  }
  @media (min-width:768px){.article-shell{padding:48px 56px 56px}}
  .article-body{max-width:720px;margin:0 auto;font-size:16px;line-height:1.9;color:var(--c-text)}
  .article-body p{margin:0 0 20px}
  .article-body h2{
    position:relative;font-size:clamp(21px,2.4vw,27px);font-weight:700;line-height:1.5;
    margin:38px 0 18px;padding-left:14px;
  }
  .article-body h2::before{
    content:"";position:absolute;left:0;top:.42em;bottom:.42em;width:3px;
    border-radius:2px;background:var(--c-primary);
  }
  .article-body h3{font-size:20px;font-weight:600;line-height:1.6;margin:30px 0 14px;color:var(--c-primary-700)}
  .article-body h4{font-size:17px;font-weight:600;margin:24px 0 12px}
  .article-body ul,.article-body ol{margin:0 0 20px;padding-left:4px;line-height:1.9}
  .article-body ul li{position:relative;padding-left:16px;margin-bottom:10px}
  .article-body ul li::before{
    content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;border-radius:2px;background:var(--c-primary);
  }
  .article-body ol{list-style:decimal;padding-left:22px}
  .article-body ol li{margin-bottom:10px}
  .article-body ol li::marker{color:var(--c-primary);font-weight:600}
  .article-body blockquote{
    margin:24px 0;padding:18px 22px;background:#F5F8FC;
    border-left:4px solid rgba(20,80,127,.4);border-radius:0 12px 12px 0;color:var(--c-muted);
  }
  .article-body blockquote p:last-child{margin-bottom:0}
  .article-body img{margin:14px auto;border-radius:12px;border:1px solid var(--c-border);background:#EEF2F7}
  .article-body a{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px}
  .article-body a:hover{color:var(--c-primary-700);font-weight:600}
  .article-body code{background:#EEF2F7;padding:2px 6px;border-radius:6px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:14px;color:#0F3C60}
  .article-body pre{background:#F1F5FA;border:1px solid var(--c-border);padding:16px;border-radius:12px;overflow:auto;font-size:14px;line-height:1.7;margin:0 0 20px}
  .article-body pre code{background:none;padding:0;border:0}
  .article-body table{width:100%;border-collapse:collapse;margin:20px 0;font-size:15px}
  .article-body th,.article-body td{border:1px solid var(--c-border);padding:10px 12px;text-align:left}
  .article-body th{background:#F5F8FC;font-weight:600}
  .article-body hr{border:0;border-top:1px solid var(--c-border);margin:32px 0}

  .article-foot{margin-top:40px;padding-top:22px;border-top:1px solid var(--c-border);display:flex;flex-wrap:wrap;gap:12px;max-width:720px;margin-left:auto;margin-right:auto}
  .text-link{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--c-primary)}
  .text-link:hover{color:var(--c-primary-700);text-decoration:underline;text-underline-offset:4px}
  .text-link i{font-size:12px}

  .empty-state{
    max-width:720px;margin:0 auto;text-align:center;padding:56px 20px;
  }
  .empty-icon{
    width:64px;height:64px;border-radius:18px;background:#EAF2FA;color:var(--c-primary);
    display:flex;align-items:center;justify-content:center;font-size:24px;margin:0 auto 20px;
  }
  .empty-state h1{font-size:26px;font-weight:700;margin-bottom:10px}
  .empty-state p{font-size:15px;color:var(--c-muted);margin-bottom:24px}

  /* ---------- 阅读进度 ---------- */
  .read-rail{
    position:fixed;right:10px;top:50%;transform:translateY(-50%);
    width:2px;height:180px;background:var(--c-border);border-radius:2px;display:none;z-index:30;
  }
  .read-rail i{display:block;width:2px;height:0;background:var(--c-primary);border-radius:2px;transition:height .12s linear}
  @media (min-width:1280px){.read-rail{display:block}}

  /* ---------- 板块 ---------- */
  .section{padding:56px 0}
  @media (min-width:1024px){.section{padding:72px 0}}
  .section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:28px;flex-wrap:wrap}
  .section-head h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.45;position:relative;padding-left:14px}
  .section-head h2::before{content:"";position:absolute;left:0;top:.34em;bottom:.34em;width:3px;border-radius:2px;background:var(--c-primary)}
  .section-head p{font-size:15px;color:var(--c-muted)}

  .related-grid{display:grid;grid-template-columns:1fr;gap:20px}
  @media (min-width:768px){.related-grid{grid-template-columns:1fr 1fr}}
  .rel-card{
    display:flex;flex-direction:column;background:var(--c-surface);border:1px solid var(--c-border);
    border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-card);
    transition:box-shadow .22s ease,transform .22s ease;
  }
  .rel-card:hover{box-shadow:var(--sh-hover);transform:translateY(-3px)}
  .rel-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:#EEF2F7}
  .rel-thumb img{width:100%;height:100%;transition:transform .35s ease}
  .rel-card:hover .rel-thumb img{transform:scale(1.03)}
  .rel-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px}
  .rel-body h3{font-size:17px;font-weight:600;line-height:1.6;transition:color .18s ease}
  .rel-card:hover .rel-body h3{color:var(--c-primary)}
  .rel-body p{font-size:14px;line-height:1.8;color:var(--c-muted)}
  .rel-body .meta-item{color:var(--c-muted)}

  /* ---------- CTA ---------- */
  .cta-band{
    position:relative;background:linear-gradient(120deg,var(--c-primary) 0%,var(--c-primary-700) 100%);
    color:#fff;padding:48px 0;overflow:hidden;
  }
  .cta-band::after{
    content:"";position:absolute;inset:0;opacity:.16;
    background-image:repeating-linear-gradient(115deg,rgba(255,255,255,.5) 0 1px,transparent 1px 16px);
  }
  .cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap}
  .cta-inner h2{font-size:clamp(20px,2.2vw,25px);font-weight:700;line-height:1.5;margin-bottom:8px}
  .cta-inner p{font-size:15px;color:rgba(255,255,255,.82);max-width:520px}
  .cta-actions{display:flex;gap:12px;flex-wrap:wrap}

  /* ---------- 页脚 ---------- */
  .site-footer{background:var(--c-surface);border-top:1px solid var(--c-border);padding:56px 0 0;margin-top:0}
  .footer-grid{display:grid;grid-template-columns:1fr;gap:30px}
  @media (min-width:640px){.footer-grid{grid-template-columns:1fr 1fr}}
  @media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.5fr;gap:36px}}
  .footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:14px}
  .footer-brand b{font-size:15px;font-weight:700;display:block;line-height:1.4}
  .footer-brand span span{font-size:11px;letter-spacing:.16em;color:var(--c-muted)}
  .footer-note{font-size:13px;line-height:1.85;color:var(--c-muted)}
  .footer-col h4{font-size:14px;font-weight:600;margin-bottom:12px;color:var(--c-text)}
  .footer-col ul{display:flex;flex-direction:column;gap:9px}
  .footer-col ul a{font-size:14px;color:var(--c-muted)}
  .footer-col ul a:hover{color:var(--c-primary);text-decoration:underline;text-underline-offset:4px}
  .footer-bottom{
    margin-top:40px;border-top:1px solid var(--c-border);padding:18px 0;
    display:flex;align-items:center;justify-content:center;gap:10px;flex-wrap:wrap;
    font-size:13px;color:var(--c-muted);text-align:center;
  }
  .footer-bottom span:nth-child(2){position:relative;padding-left:14px}
  .footer-bottom span:nth-child(2)::before{content:"";position:absolute;left:0;top:50%;width:4px;height:4px;border-radius:50%;background:var(--c-border);transform:translateY(-50%)}
  @media (max-width:520px){.footer-bottom span:nth-child(2){padding-left:0}.footer-bottom span:nth-child(2)::before{display:none}}

  @media (max-width:767px){
    .article-hero{padding:30px 0 38px}
    .article-shell{padding:28px 18px 32px;border-radius:var(--r-card)}
    .cta-inner{flex-direction:column;align-items:flex-start}
    .btn{padding:11px 20px;font-size:14px}
  }

/* roulang page: category2 */
:root{
  --c-primary:#14507F;
  --c-primary-700:#0F3C60;
  --c-accent:#0FA3A3;
  --c-cta:#FF7A29;
  --c-bg:#F5F8FC;
  --c-surface:#FFFFFF;
  --c-border:#E2E9F3;
  --c-text:#0D1B2A;
  --c-muted:#5A6B80;
  --c-soft:#EAF2FA;
  --c-soft-accent:#E6F6F6;
  --r-card:14px;
  --r-hero:18px;
  --r-btn:10px;
  --sh-card:0 6px 24px -8px rgba(20,80,127,.14);
  --sh-hover:0 14px 36px -10px rgba(20,80,127,.24);
  --sh-line:0 1px 2px rgba(13,27,42,.05);
  --nav-w:256px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.9;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit;}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}
::selection{background:rgba(20,80,127,.16);}
::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-thumb{background:#CBD8E8;border-radius:999px;border:2px solid var(--c-bg);}
::-webkit-scrollbar-thumb:hover{background:#AFC2D9;}

.container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px;}
.section{padding:56px 0;}
@media (min-width:1024px){ .section{padding:88px 0;} }

/* ============ 侧栏导航 ============ */
.side-nav{
  display:none;
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--nav-w);
  background:var(--c-surface);
  border-right:1px solid var(--c-border);
  padding:26px 18px 22px;
  flex-direction:column;
  z-index:60;
}
@media (min-width:1024px){ .side-nav{display:flex;} }

.brand{display:flex;align-items:center;gap:12px;padding:0 6px 22px;border-bottom:1px solid var(--c-border);}
.brand-mark{
  width:40px;height:40px;flex:0 0 40px;
  border-radius:10px;
  background:linear-gradient(135deg,var(--c-primary) 0%,var(--c-primary-700) 100%);
  color:#fff;font-size:19px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
  letter-spacing:0;
  box-shadow:0 6px 16px -6px rgba(20,80,127,.5);
}
.brand-text b{display:block;font-size:15px;line-height:1.4;font-weight:700;letter-spacing:-.01em;}
.brand-text span{display:block;font-size:10px;letter-spacing:.16em;color:var(--c-muted);line-height:1.6;}

.nav-scroll{flex:1;overflow-y:auto;padding-top:20px;}
.nav-group{margin-bottom:22px;}
.nav-label{
  font-size:13px;letter-spacing:.08em;color:var(--c-muted);
  padding:0 12px 10px;font-weight:600;
}
.nav-item{
  position:relative;
  display:flex;align-items:center;gap:10px;
  padding:10px 12px;
  border-radius:6px;
  font-size:15px;color:var(--c-muted);
  transition:background .18s ease-out,color .18s ease-out,transform .18s ease-out;
  margin-bottom:2px;
}
.nav-item i{font-size:14px;width:18px;text-align:center;opacity:.85;}
.nav-item:hover{background:#F3F6FB;color:var(--c-primary);}
.nav-item.is-active{background:var(--c-soft);color:var(--c-primary);font-weight:600;}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;
  border-radius:3px;background:var(--c-accent);
}
.nav-foot{
  border-top:1px solid var(--c-border);
  padding-top:18px;
}
.nav-cta{
  display:block;width:100%;text-align:center;
  background:var(--c-cta);color:#fff;font-weight:600;font-size:15px;
  padding:12px 16px;border-radius:var(--r-btn);
  transition:background .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out;
  box-shadow:0 6px 16px -8px rgba(255,122,41,.6);
}
.nav-cta:hover{background:#F06A16;transform:translateY(-1px);box-shadow:0 10px 24px -8px rgba(255,122,41,.45);}
.nav-cta:active{transform:translateY(0);}
.nav-foot p{font-size:12px;line-height:1.7;color:var(--c-muted);margin-top:12px;}

/* ============ 移动端顶栏 ============ */
.mobile-bar{
  position:sticky;top:0;z-index:70;
  height:60px;display:flex;align-items:center;justify-content:space-between;
  padding:0 16px;background:var(--c-surface);
  border-bottom:1px solid var(--c-border);
  transition:box-shadow .2s ease-out;
}
.mobile-bar.is-scrolled{box-shadow:0 6px 20px -12px rgba(20,80,127,.4);}
.mobile-bar .brand{padding:0;border:0;}
.mobile-bar .brand-mark{width:34px;height:34px;flex:0 0 34px;font-size:16px;border-radius:9px;}
.mobile-bar .brand-text b{font-size:14px;}
.mobile-bar .brand-text span{font-size:9px;}
.burger{
  width:40px;height:40px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  color:var(--c-primary);font-size:17px;
  border:1px solid var(--c-border);background:#fff;
  transition:background .18s ease-out;
}
.burger:hover{background:var(--c-soft);}
@media (min-width:1024px){ .mobile-bar{display:none;} }

/* ============ 抽屉 ============ */
.drawer-mask{
  position:fixed;inset:0;background:rgba(13,27,42,.45);
  opacity:0;visibility:hidden;transition:opacity .22s ease-out,visibility .22s;
  z-index:80;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;left:0;bottom:0;
  width:80%;max-width:320px;
  background:#fff;z-index:90;
  transform:translateX(-102%);
  transition:transform .26s ease-out;
  display:flex;flex-direction:column;
  padding:20px 18px;
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:18px;border-bottom:1px solid var(--c-border);}
.drawer-close{
  width:36px;height:36px;border-radius:9px;border:1px solid var(--c-border);
  display:flex;align-items:center;justify-content:center;color:var(--c-muted);
}
.drawer-close:hover{background:var(--c-soft);color:var(--c-primary);}

/* ============ 主内容补偿 ============ */
.page-main{padding-bottom:0;}
@media (min-width:1024px){ .page-main{padding-left:var(--nav-w);} }

/* ============ 面包屑 ============ */
.crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--c-muted);
  padding:22px 0 0;
}
.crumb a:hover{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px;}
.crumb .sep{opacity:.6;}
.crumb .cur{color:var(--c-primary);font-weight:600;}

/* ============ Hero ============ */
.page-hero{
  position:relative;
  border-bottom:1px solid var(--c-border);
  background:
    radial-gradient(900px 380px at 8% -20%, rgba(15,163,163,.12), transparent 62%),
    radial-gradient(760px 360px at 100% 0%, rgba(20,80,127,.12), transparent 64%),
    linear-gradient(0deg, rgba(226,233,243,.55) 1px, transparent 1px) 0 0/28px 28px,
    linear-gradient(90deg, rgba(226,233,243,.55) 1px, transparent 1px) 0 0/28px 28px,
    #FFFFFF;
  overflow:hidden;
}
.hero-inner{
  display:grid;grid-template-columns:1fr;gap:34px;
  padding:40px 0 52px;
  align-items:center;
}
@media (min-width:1024px){
  .hero-inner{grid-template-columns:1.05fr .95fr;gap:52px;padding:64px 0 72px;}
}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--c-soft-accent);color:#0B7F7F;
  font-size:13px;font-weight:600;letter-spacing:.04em;
  padding:6px 14px;border-radius:999px;
}
.hero-badge i{font-size:12px;}
.page-hero h1{
  font-size:clamp(30px,4vw,44px);
  font-weight:700;letter-spacing:-.01em;line-height:1.28;
  margin:18px 0 0;
}
.hero-sub{
  font-size:clamp(16px,1.5vw,18px);
  color:var(--c-muted);line-height:1.9;
  margin-top:16px;max-width:34em;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:12px 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1.4;
  transition:background .18s ease-out,color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.btn-primary{
  background:var(--c-cta);color:#fff;
  box-shadow:0 8px 20px -10px rgba(255,122,41,.75);
}
.btn-primary:hover{background:#F06A16;transform:translateY(-1px);box-shadow:0 10px 24px -8px rgba(255,122,41,.45);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{
  background:#fff;color:var(--c-primary);
  border:1px solid var(--c-border);
}
.btn-ghost:hover{background:var(--c-soft);border-color:#C9DBEC;}
.btn-light{
  background:#fff;color:var(--c-primary);
}
.btn-light:hover{background:#EDF4FB;transform:translateY(-1px);}
.btn-outline-light{
  background:transparent;color:#fff;border:1px solid rgba(255,255,255,.55);
}
.btn-outline-light:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.85);}

.hero-visual{position:relative;}
.hero-visual img{
  width:100%;height:260px;object-fit:cover;
  border-radius:var(--r-hero);
  box-shadow:var(--sh-hover);
  background:#E8EEF6;
}
@media (min-width:768px){ .hero-visual img{height:340px;} }
@media (min-width:1024px){ .hero-visual img{height:400px;} }
.hero-float{
  position:absolute;right:14px;bottom:-18px;
  background:#fff;border:1px solid var(--c-border);border-radius:8px;
  padding:12px 16px;box-shadow:var(--sh-card);
  display:flex;align-items:center;gap:12px;
}
.hero-float .num{font-size:26px;font-weight:700;color:var(--c-primary);line-height:1;}
.hero-float .txt{font-size:12px;color:var(--c-muted);line-height:1.5;}

.hero-points{
  display:grid;grid-template-columns:1fr;gap:12px;
  margin-top:36px;padding-top:24px;border-top:1px solid var(--c-border);
}
@media (min-width:640px){ .hero-points{grid-template-columns:repeat(3,1fr);} }
.hero-point{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--c-muted);}
.hero-point i{
  width:30px;height:30px;flex:0 0 30px;border-radius:9px;
  background:var(--c-soft);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;font-size:13px;
}

/* ============ 通用标题 ============ */
.sec-head{margin-bottom:30px;}
.sec-head .kicker{
  font-size:13px;letter-spacing:.14em;color:var(--c-accent);
  font-weight:700;text-transform:uppercase;
}
.sec-head h2{
  position:relative;
  font-size:clamp(24px,2.6vw,32px);
  font-weight:700;letter-spacing:-.01em;line-height:1.4;
  padding-left:16px;margin-top:10px;
}
.sec-head h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;
  border-radius:3px;background:var(--c-primary);
}
.sec-head p{font-size:15px;color:var(--c-muted);margin-top:12px;max-width:62em;}

/* ============ 筛选 + 卡片网格 ============ */
.guide-layout{display:grid;grid-template-columns:1fr;gap:28px;}
@media (min-width:1024px){ .guide-layout{grid-template-columns:200px 1fr;gap:40px;align-items:start;} }

.filter-bar{
  display:flex;gap:8px;overflow-x:auto;padding-bottom:6px;
  scrollbar-width:thin;
}
@media (min-width:1024px){
  .filter-bar{
    position:sticky;top:96px;
    flex-direction:column;overflow:visible;padding-bottom:0;gap:4px;
  }
}
.filter-item{
  position:relative;
  white-space:nowrap;
  display:flex;align-items:center;gap:10px;
  padding:10px 14px;border-radius:8px;
  font-size:14px;color:var(--c-muted);font-weight:500;
  border:1px solid var(--c-border);background:#fff;
  transition:background .18s ease-out,color .18s ease-out,border-color .18s ease-out,padding-left .18s ease-out;
}
@media (min-width:1024px){
  .filter-item{border:0;background:transparent;padding:11px 14px;border-radius:6px;}
}
.filter-item:hover{background:var(--c-soft);color:var(--c-primary);}
.filter-item.is-active{background:var(--c-soft);color:var(--c-primary);font-weight:600;border-color:#C9DBEC;}
@media (min-width:1024px){
  .filter-item.is-active::before{
    content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;
    border-radius:3px;background:var(--c-accent);
  }
}

.card-grid{display:grid;grid-template-columns:1fr;gap:22px;}
@media (min-width:768px){ .card-grid{grid-template-columns:repeat(2,1fr);gap:26px;} }

.guide-card{
  display:flex;flex-direction:column;
  background:var(--c-surface);
  border:1px solid var(--c-border);
  border-radius:var(--r-card);
  box-shadow:var(--sh-card);
  overflow:hidden;
  transition:box-shadow .22s ease-out,transform .22s ease-out;
}
.guide-card:hover{box-shadow:var(--sh-hover);transform:translateY(-3px);}
.guide-card .thumb{position:relative;overflow:hidden;background:#E8EEF6;aspect-ratio:16/9;}
.guide-card .thumb img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .35s ease-out;
}
.guide-card:hover .thumb img{transform:scale(1.03);}
.guide-card .body{padding:22px;display:flex;flex-direction:column;flex:1;}
.badge{
  display:inline-flex;align-items:center;
  font-size:12px;font-weight:500;line-height:1.6;
  padding:3px 10px;border-radius:12px;
  background:var(--c-soft);color:var(--c-primary);
}
.badge.accent{background:var(--c-soft-accent);color:#0B7F7F;}
.guide-card h3{font-size:19px;font-weight:600;line-height:1.5;margin-top:12px;}
.guide-card p{font-size:14px;color:var(--c-muted);line-height:1.85;margin-top:10px;flex:1;}
.text-link{
  display:inline-flex;align-items:center;gap:7px;
  color:var(--c-primary);font-weight:600;font-size:14px;
  margin-top:18px;
  transition:gap .18s ease-out,color .18s ease-out;
}
.text-link:hover{gap:12px;color:var(--c-primary-700);}
.card-empty{
  grid-column:1/-1;
  text-align:center;padding:60px 20px;
  background:#fff;border:1px dashed var(--c-border);border-radius:var(--r-card);
  color:var(--c-muted);font-size:14px;
}
.card-empty i{font-size:26px;color:#B7C7DA;display:block;margin-bottom:14px;}

/* ============ 步骤轨道 ============ */
.steps{
  position:relative;
  display:grid;grid-template-columns:1fr;gap:26px;
  margin-top:8px;
}
@media (min-width:768px){ .steps{grid-template-columns:repeat(3,1fr);gap:28px;} }
.steps::before{
  content:"";position:absolute;left:18px;top:10px;bottom:10px;
  border-left:1px dashed #C6D6E6;
}
@media (min-width:768px){
  .steps::before{left:6%;right:6%;top:18px;bottom:auto;border-left:0;border-top:1px dashed #C6D6E6;}
}
.step{position:relative;padding-left:56px;background:transparent;}
@media (min-width:768px){ .step{padding-left:0;padding-top:56px;} }
.step-num{
  position:absolute;left:0;top:0;
  width:38px;height:38px;border-radius:50%;
  background:#fff;border:1px solid var(--c-border);
  color:var(--c-primary);font-weight:700;font-size:15px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--sh-line);
}
@media (min-width:768px){ .step-num{left:0;top:0;} }
.step h3{font-size:18px;font-weight:600;line-height:1.6;}
.step p{font-size:14px;color:var(--c-muted);line-height:1.85;margin-top:8px;}

/* ============ 安全提示条 ============ */
.notice-band{
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);
  box-shadow:var(--sh-card);
  padding:28px;
  display:grid;grid-template-columns:1fr;gap:24px;
}
@media (min-width:1024px){ .notice-band{grid-template-columns:.9fr 1.1fr;gap:40px;padding:36px;align-items:center;} }
.notice-band h2{font-size:clamp(22px,2.2vw,28px);font-weight:700;line-height:1.45;}
.notice-band .lead{font-size:15px;color:var(--c-muted);margin-top:14px;}
.notice-list li{
  display:flex;gap:14px;
  padding:16px 0;
  border-top:1px solid var(--c-border);
}
.notice-list li:first-child{border-top:0;padding-top:0;}
.notice-list i{
  width:34px;height:34px;flex:0 0 34px;border-radius:10px;
  background:var(--c-soft);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;font-size:14px;
}
.notice-list b{display:block;font-size:15px;font-weight:600;}
.notice-list span{display:block;font-size:14px;color:var(--c-muted);line-height:1.8;margin-top:4px;}

/* ============ FAQ ============ */
.faq-list{border-top:1px solid var(--c-border);margin-top:6px;}
.faq-item{border-bottom:1px solid var(--c-border);}
.faq-item summary{
  list-style:none;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 4px;
  font-size:16px;font-weight:600;line-height:1.7;
  cursor:pointer;
  transition:color .18s ease-out;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--c-primary);}
.faq-item summary::after{
  content:"+";
  flex:0 0 auto;
  font-size:20px;font-weight:400;color:var(--c-primary);
  line-height:1;
  transition:transform .2s ease-out;
}
.faq-item[open] summary::after{content:"−";}
.faq-item .answer{
  font-size:15px;color:var(--c-muted);line-height:1.85;
  padding:0 60px 22px 4px;
}
@media (max-width:520px){ .faq-item .answer{padding-right:20px;} }

/* ============ CTA 条 ============ */
.cta-band{
  background:linear-gradient(135deg,#14507F 0%,#0F3C60 100%);
  border-radius:var(--r-hero);
  padding:38px 28px;
  color:#fff;
  display:grid;grid-template-columns:1fr;gap:24px;
  position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background:repeating-linear-gradient(135deg,rgba(255,255,255,.06) 0 2px,transparent 2px 12px);
  pointer-events:none;
}
@media (min-width:1024px){
  .cta-band{grid-template-columns:1fr auto;align-items:center;gap:40px;padding:48px 44px;}
}
.cta-band h2{font-size:clamp(20px,2.2vw,26px);font-weight:700;line-height:1.5;position:relative;}
.cta-band p{font-size:14px;color:rgba(255,255,255,.8);margin-top:12px;position:relative;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;position:relative;}

/* ============ 页脚 ============ */
.site-footer{
  background:#fff;
  border-top:1px solid var(--c-border);
  padding:48px 0 26px;
  margin-top:56px;
}
.footer-grid{
  display:grid;grid-template-columns:1fr;gap:32px;
  padding-bottom:34px;
}
@media (min-width:768px){ .footer-grid{grid-template-columns:repeat(2,1fr);} }
@media (min-width:1024px){ .footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.3fr;gap:40px;} }
.footer-brand{display:flex;align-items:center;gap:12px;}
.footer-brand .brand-mark{width:40px;height:40px;flex:0 0 40px;}
.footer-brand b{font-size:15px;font-weight:700;line-height:1.5;}
.footer-brand span span{font-size:10px;letter-spacing:.16em;color:var(--c-muted);}
.footer-col h4{font-size:15px;font-weight:700;margin-bottom:16px;}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul li a{font-size:14px;color:var(--c-muted);transition:color .18s ease-out;}
.footer-col ul li a:hover{color:var(--c-primary);text-decoration:underline;text-underline-offset:4px;}
.footer-note{font-size:13px;line-height:1.9;color:var(--c-muted);margin-top:14px;}
.footer-bottom{
  border-top:1px solid var(--c-border);
  padding-top:20px;
  display:flex;flex-direction:column;gap:8px;
  align-items:center;text-align:center;
  font-size:13px;color:var(--c-muted);
}
@media (min-width:768px){
  .footer-bottom{flex-direction:row;justify-content:space-between;text-align:left;}
}

/* 小组件 */
.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;}

/* roulang page: category3 */
:root{
  --c-primary:#14507F;
  --c-primary-700:#0F3C60;
  --c-primary-050:#EAF2FA;
  --c-accent:#0FA3A3;
  --c-accent-050:#E6F6F6;
  --c-cta:#FF7A29;
  --c-cta-600:#F06A16;
  --c-bg:#F5F8FC;
  --c-surface:#FFFFFF;
  --c-border:#E2E9F3;
  --c-text:#0D1B2A;
  --c-muted:#5A6B80;
  --r-card:14px;
  --r-panel:18px;
  --r-btn:10px;
  --sh-card:0 6px 24px -8px rgba(20,80,127,.14);
  --sh-hover:0 14px 36px -10px rgba(20,80,127,.24);
  --sh-soft:0 1px 2px rgba(13,27,42,.05);
  --side-w:16rem;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.9;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .18s ease-out,background-color .18s ease-out;}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul,ol{padding:0;list-style:none;}
button,input{font-family:inherit;font-size:inherit;}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible{
  outline:2px solid var(--c-primary);
  outline-offset:2px;
  border-radius:6px;
}
::selection{background:var(--c-primary-050);color:var(--c-primary-700);}
::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-thumb{background:#CBD8E8;border-radius:999px;border:2px solid var(--c-bg);}
::-webkit-scrollbar-thumb:hover{background:#B4C6DA;}

/* ============ 布局骨架 ============ */
.shell{min-height:100vh;}
.page-main{padding:0 0 0 0;}
.page-wrap{
  width:100%;
  max-width:1180px;
  margin:0 auto;
  padding:0 20px;
}
@media (min-width:1024px){
  .page-main{padding-left:var(--side-w);}
  .page-wrap{padding:0 36px;}
}

/* ============ 左侧竖向导航 ============ */
.side-nav{
  display:none;
}
@media (min-width:1024px){
  .side-nav{
    position:fixed;
    top:0;left:0;
    width:var(--side-w);
    height:100vh;
    display:flex;
    flex-direction:column;
    gap:26px;
    padding:26px 18px 22px;
    background:var(--c-surface);
    border-right:1px solid var(--c-border);
    overflow-y:auto;
    z-index:60;
  }
}
.brand{display:flex;align-items:center;gap:12px;padding:0 4px;}
.brand-mark{
  width:40px;height:40px;flex:0 0 40px;
  border-radius:10px;
  background:linear-gradient(140deg,var(--c-primary),var(--c-primary-700));
  color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:19px;font-weight:700;
  letter-spacing:0;
  box-shadow:var(--sh-soft);
  position:relative;
  overflow:hidden;
}
.brand-mark::after{
  content:"";
  position:absolute;right:-10px;bottom:-14px;
  width:34px;height:34px;border-radius:50%;
  background:rgba(255,255,255,.16);
}
.brand-text b{
  display:block;
  font-size:14.5px;
  line-height:1.35;
  font-weight:700;
  letter-spacing:.01em;
  color:var(--c-text);
}
.brand-text span{
  display:block;
  font-size:10.5px;
  letter-spacing:.16em;
  color:var(--c-muted);
  line-height:1.6;
}
.nav-group{display:flex;flex-direction:column;gap:4px;}
.nav-label{
  font-size:13px;
  letter-spacing:.08em;
  color:var(--c-muted);
  padding:0 12px 8px;
}
.nav-item{
  display:flex;align-items:center;gap:10px;
  padding:10px 12px;
  border-radius:6px;
  font-size:14.5px;
  color:#33445A;
  border-left:3px solid transparent;
  transition:background-color .18s ease-out,color .18s ease-out,border-color .18s ease-out;
}
.nav-item i{width:16px;text-align:center;font-size:13.5px;color:#8CA0B8;transition:color .18s ease-out;}
.nav-item:hover{background:#F3F6FB;color:var(--c-primary);}
.nav-item:hover i{color:var(--c-primary);}
.nav-item.is-active{
  background:var(--c-primary-050);
  border-left-color:var(--c-accent);
  color:var(--c-primary);
  font-weight:600;
}
.nav-item.is-active i{color:var(--c-primary);}
.nav-foot{margin-top:auto;display:flex;flex-direction:column;gap:12px;}
.nav-foot p{
  font-size:12px;
  line-height:1.8;
  color:var(--c-muted);
  padding:0 4px;
}

/* ============ 移动端顶栏 ============ */
.topbar{
  position:sticky;top:0;z-index:70;
  height:60px;
  display:flex;align-items:center;justify-content:space-between;
  padding:0 16px;
  background:var(--c-surface);
  border-bottom:1px solid var(--c-border);
  transition:box-shadow .2s ease-out;
}
.topbar.is-scrolled{box-shadow:0 6px 18px -12px rgba(13,27,42,.35);}
.topbar-brand{display:flex;align-items:center;gap:10px;}
.topbar-brand .brand-mark{width:34px;height:34px;flex:0 0 34px;font-size:16px;border-radius:9px;}
.topbar-brand b{font-size:13.5px;line-height:1.3;display:block;}
.topbar-brand span{font-size:9.5px;letter-spacing:.14em;color:var(--c-muted);display:block;}
.hamburger{
  width:42px;height:42px;border-radius:10px;
  border:1px solid var(--c-border);
  background:var(--c-surface);
  color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;
  cursor:pointer;
  transition:background-color .18s ease-out,border-color .18s ease-out;
}
.hamburger:hover{background:var(--c-primary-050);border-color:#CFE0F1;}
@media (min-width:1024px){.topbar{display:none;}}

/* 抽屉 */
.drawer-mask{
  position:fixed;inset:0;
  background:rgba(13,27,42,.45);
  opacity:0;visibility:hidden;
  transition:opacity .22s ease-out,visibility .22s ease-out;
  z-index:80;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;left:0;bottom:0;
  width:80%;max-width:320px;
  background:var(--c-surface);
  z-index:90;
  transform:translateX(-102%);
  transition:transform .26s ease-out;
  display:flex;flex-direction:column;
  gap:22px;
  padding:20px 18px 24px;
  overflow-y:auto;
  border-right:1px solid var(--c-border);
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:10px;}
.drawer-close{
  width:38px;height:38px;border-radius:10px;
  border:1px solid var(--c-border);background:#fff;color:var(--c-muted);
  display:flex;align-items:center;justify-content:center;cursor:pointer;
}
.drawer-close:hover{background:#F3F6FB;color:var(--c-primary);}

/* ============ 通用组件 ============ */
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;
  border-radius:var(--r-btn);
  font-size:15px;font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:background-color .18s ease-out,box-shadow .18s ease-out,transform .18s ease-out,border-color .18s ease-out,color .18s ease-out;
  line-height:1.4;
}
.btn-primary{background:var(--c-cta);color:#fff;box-shadow:0 6px 18px -10px rgba(255,122,41,.7);}
.btn-primary:hover{background:var(--c-cta-600);transform:translateY(-1px);box-shadow:0 10px 24px -8px rgba(255,122,41,.45);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:#fff;color:var(--c-primary);border-color:var(--c-border);}
.btn-ghost:hover{background:var(--c-primary-050);border-color:#CFE0F1;}
.btn-light{background:#fff;color:var(--c-primary);}
.btn-light:hover{background:#EAF2FA;transform:translateY(-1px);}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.62);}
.btn-outline-light:hover{background:rgba(255,255,255,.14);}
.btn-block{width:100%;}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;
  border-radius:999px;
  font-size:12px;font-weight:500;
  background:var(--c-primary-050);color:var(--c-primary);
  line-height:1.6;
}
.badge-accent{background:var(--c-accent-050);color:#0B7F7F;}
.badge-cta{background:#FFF1E6;color:#C2580F;}

.sec{padding:64px 0;}
@media (min-width:1024px){.sec{padding:96px 0;}}
.sec-head{margin-bottom:32px;}
.sec-head.center{text-align:center;}
.sec-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.08em;color:var(--c-accent);
  margin-bottom:12px;
}
.sec-title{
  font-size:clamp(24px,2.6vw,32px);
  font-weight:700;
  line-height:1.35;
  letter-spacing:-.01em;
  position:relative;
  padding-left:16px;
}
.sec-title::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:2px;
  background:var(--c-primary);
}
.sec-head.center .sec-title{padding-left:0;}
.sec-head.center .sec-title::before{display:none;}
.sec-desc{margin-top:12px;font-size:15px;line-height:1.8;color:var(--c-muted);max-width:720px;}

/* ============ 面包屑 ============ */
.crumb{
  padding:24px 0 0;
  font-size:13px;
  color:var(--c-muted);
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
}
.crumb a:hover{color:var(--c-primary);}
.crumb .sep{color:#B6C4D6;}
.crumb .now{color:var(--c-primary);font-weight:600;}

/* ============ Hero ============ */
.hero{
  position:relative;
  padding:36px 0 56px;
  overflow:hidden;
}
.hero::before{
  content:"";
  position:absolute;inset:0;
  background:
    radial-gradient(720px 420px at 88% -10%, rgba(15,163,163,.12), transparent 62%),
    radial-gradient(560px 380px at 6% 12%, rgba(20,80,127,.10), transparent 66%);
  pointer-events:none;
}
.hero-grid{
  position:relative;
  display:grid;
  grid-template-columns:1fr;
  gap:36px;
  align-items:center;
}
@media (min-width:1024px){
  .hero-grid{grid-template-columns:1.05fr .95fr;gap:56px;}
}
.hero-title{
  font-size:clamp(30px,4vw,44px);
  font-weight:700;
  line-height:1.28;
  letter-spacing:-.01em;
  margin:16px 0 0;
}
.hero-title .brand-line{
  display:block;
  font-size:clamp(17px,1.7vw,20px);
  font-weight:600;
  color:var(--c-primary);
  letter-spacing:.02em;
  margin-bottom:10px;
}
.hero-sub{
  margin-top:18px;
  font-size:17px;
  line-height:1.85;
  color:var(--c-muted);
  max-width:560px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.hero-facts{
  display:flex;flex-wrap:wrap;gap:26px;
  margin-top:34px;padding-top:24px;
  border-top:1px solid var(--c-border);
}
.hero-fact b{
  display:block;
  font-size:24px;font-weight:700;color:var(--c-primary);
  letter-spacing:-.01em;line-height:1.3;
}
.hero-fact span{font-size:13px;color:var(--c-muted);}
.hero-figure{position:relative;}
.hero-figure .frame{
  border-radius:var(--r-panel);
  overflow:hidden;
  border:1px solid var(--c-border);
  box-shadow:var(--sh-card);
  background:#DCE6F2;
  aspect-ratio:16/11;
}
.hero-figure img{width:100%;height:100%;object-fit:cover;}
.hero-float{
  position:absolute;right:14px;bottom:-18px;
  background:#fff;
  border:1px solid var(--c-border);
  border-radius:8px;
  box-shadow:var(--sh-card);
  padding:14px 16px;
  min-width:172px;
}
.hero-float .k{font-size:12px;color:var(--c-muted);letter-spacing:.06em;}
.hero-float .v{font-size:20px;font-weight:700;color:var(--c-primary);line-height:1.5;}

/* ============ 信息条 ============ */
.info-strip{
  background:var(--c-surface);
  border:1px solid var(--c-border);
  border-radius:var(--r-card);
  box-shadow:var(--sh-card);
  display:grid;
  grid-template-columns:1fr;
  overflow:hidden;
}
@media (min-width:768px){.info-strip{grid-template-columns:repeat(3,1fr);}}
.info-cell{
  padding:24px 26px;
  border-top:1px solid var(--c-border);
}
@media (min-width:768px){
  .info-cell{border-top:none;border-left:1px solid var(--c-border);}
  .info-cell:first-child{border-left:none;}
}
.info-cell .num{
  font-size:30px;font-weight:700;color:var(--c-primary);line-height:1.25;
  letter-spacing:-.02em;
}
.info-cell .lbl{font-size:14px;color:var(--c-text);font-weight:600;margin-top:6px;}
.info-cell .txt{font-size:13.5px;color:var(--c-muted);line-height:1.8;margin-top:4px;}

/* ============ 编号条目流 ============ */
.entry-flow{
  border-top:1px solid var(--c-border);
}
.entry{
  display:flex;align-items:flex-start;gap:18px;
  padding:26px 6px;
  border-bottom:1px solid var(--c-border);
  transition:transform .22s ease-out,color .22s ease-out,background-color .22s ease-out;
}
.entry:hover{
  transform:translateX(4px);
  color:var(--c-primary);
  background:linear-gradient(90deg, rgba(234,242,250,.7), rgba(234,242,250,0));
}
.entry-num{
  flex:0 0 48px;
  font-size:26px;
  font-weight:300;
  line-height:1.2;
  color:#B6C7DA;
  letter-spacing:.01em;
  transition:color .22s ease-out;
}
.entry:hover .entry-num{color:var(--c-accent);}
.entry-body{flex:1 1 auto;min-width:0;}
.entry-body h3{
  font-size:19px;
  font-weight:600;
  line-height:1.5;
  letter-spacing:0;
}
.entry-body p{
  margin-top:8px;
  font-size:15px;
  line-height:1.85;
  color:var(--c-muted);
  max-width:760px;
}
.entry-meta{margin-top:10px;display:flex;flex-wrap:wrap;gap:8px;}
.entry-arrow{
  flex:0 0 auto;
  margin-top:6px;
  width:34px;height:34px;border-radius:50%;
  border:1px solid var(--c-border);
  display:flex;align-items:center;justify-content:center;
  color:#9DAFC3;font-size:13px;
  transition:background-color .22s ease-out,color .22s ease-out,border-color .22s ease-out,transform .22s ease-out;
}
.entry:hover .entry-arrow{
  background:var(--c-primary);border-color:var(--c-primary);color:#fff;
  transform:translateX(2px);
}
@media (max-width:520px){
  .entry{gap:12px;padding:20px 2px;}
  .entry-num{flex:0 0 34px;font-size:20px;}
  .entry-arrow{display:none;}
}

/* ============ 图文区块 ============ */
.split{
  display:grid;
  grid-template-columns:1fr;
  gap:32px;
  align-items:center;
}
@media (min-width:1024px){
  .split{grid-template-columns:1fr 1fr;gap:56px;}
  .split.reverse .split-media{order:2;}
}
.split-media{
  border-radius:var(--r-panel);
  overflow:hidden;
  border:1px solid var(--c-border);
  box-shadow:var(--sh-card);
  background:#DCE6F2;
  aspect-ratio:4/3;
}
.split-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease-out;}
.split-media:hover img{transform:scale(1.03);}
.check-list{margin-top:22px;display:flex;flex-direction:column;gap:14px;}
.check-list li{
  display:flex;gap:12px;
  font-size:15px;line-height:1.85;color:#33445A;
}
.check-list li i{
  flex:0 0 auto;
  margin-top:6px;
  width:18px;height:18px;border-radius:6px;
  background:var(--c-primary-050);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;
  font-size:9px;
}
.check-list li b{color:var(--c-text);font-weight:600;}

/* ============ 场景两栏 ============ */
.scene-grid{
  display:grid;grid-template-columns:1fr;gap:28px;
}
@media (min-width:1024px){.scene-grid{grid-template-columns:0.85fr 1.15fr;gap:48px;align-items:start;}}
.scene-note{
  background:var(--c-surface);
  border:1px solid var(--c-border);
  border-left:3px solid var(--c-accent);
  border-radius:var(--r-card);
  padding:24px 26px;
  box-shadow:var(--sh-card);
}
.scene-note h3{font-size:18px;font-weight:600;line-height:1.6;}
.scene-note p{margin-top:10px;font-size:14.5px;line-height:1.85;color:var(--c-muted);}
.scene-cards{display:grid;grid-template-columns:1fr;gap:18px;}
@media (min-width:768px){.scene-cards{grid-template-columns:repeat(2,1fr);}}
.scene-card{
  background:var(--c-surface);
  border:1px solid var(--c-border);
  border-radius:var(--r-card);
  padding:22px 24px;
  box-shadow:var(--sh-soft);
  transition:box-shadow .22s ease-out,transform .22s ease-out,border-color .22s ease-out;
}
.scene-card:hover{box-shadow:var(--sh-hover);transform:translateY(-3px);border-color:#CFE0F1;}
.scene-card .ico{
  width:36px;height:36px;border-radius:10px;
  background:var(--c-primary-050);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;
  font-size:15px;margin-bottom:14px;
}
.scene-card h4{font-size:17px;font-weight:600;line-height:1.55;}
.scene-card p{margin-top:8px;font-size:14px;line-height:1.8;color:var(--c-muted);}

/* ============ FAQ ============ */
.faq-list{
  background:var(--c-surface);
  border:1px solid var(--c-border);
  border-radius:var(--r-card);
  box-shadow:var(--sh-card);
  overflow:hidden;
}
.faq-item{border-bottom:1px solid var(--c-border);}
.faq-item:last-child{border-bottom:none;}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  padding:20px 24px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:16px;font-weight:600;line-height:1.6;
  color:var(--c-text);
  transition:background-color .18s ease-out,color .18s ease-out;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{background:#F7FAFD;color:var(--c-primary);}
.faq-icon{
  flex:0 0 auto;
  position:relative;
  width:18px;height:18px;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--c-primary);border-radius:2px;
  transition:transform .2s ease-out,opacity .2s ease-out;
}
.faq-icon::before{left:0;top:8px;width:18px;height:1.6px;}
.faq-icon::after{top:0;left:8px;width:1.6px;height:18px;}
.faq-item[open] .faq-icon::after{transform:scaleY(0);opacity:0;}
.faq-item[open] summary{background:#F7FAFD;color:var(--c-primary);}
.faq-body{padding:0 24px 22px;font-size:15px;line-height:1.85;color:var(--c-muted);}
.faq-body p + p{margin-top:10px;}

/* ============ CTA 条 ============ */
.cta-band{
  background:var(--c-primary-050);
  border:1px solid #D7E5F3;
  border-radius:var(--r-panel);
  padding:32px 28px;
  display:grid;grid-template-columns:1fr;gap:20px;align-items:center;
}
@media (min-width:1024px){
  .cta-band{grid-template-columns:1fr auto;padding:38px 44px;gap:32px;}
}
.cta-band h2{
  font-size:clamp(19px,2vw,24px);
  font-weight:700;line-height:1.5;color:var(--c-primary-700);
}
.cta-band p{margin-top:8px;font-size:14.5px;color:var(--c-muted);line-height:1.8;}
.cta-band .acts{display:flex;flex-wrap:wrap;gap:12px;}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:16px;
  background:var(--c-surface);
  border-top:1px solid var(--c-border);
}
.footer-grid{
  display:grid;grid-template-columns:1fr;gap:30px;
  padding:52px 0 34px;
}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.3fr 1fr 1fr 1.3fr;gap:36px;}}
.footer-brand{display:flex;align-items:flex-start;gap:12px;}
.footer-brand .brand-mark{width:40px;height:40px;flex:0 0 40px;font-size:18px;border-radius:10px;background:linear-gradient(140deg,var(--c-primary),var(--c-primary-700));color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;}
.footer-brand b{font-size:14.5px;line-height:1.5;display:block;}
.footer-brand span{font-size:10.5px;letter-spacing:.16em;color:var(--c-muted);}
.footer-col h4{
  font-size:14px;font-weight:600;color:var(--c-text);
  margin-bottom:14px;letter-spacing:.02em;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col ul a{font-size:14px;color:var(--c-muted);}
.footer-col ul a:hover{color:var(--c-primary);text-decoration:underline;text-underline-offset:4px;}
.footer-note{
  margin-top:14px;
  font-size:13px;line-height:1.85;color:var(--c-muted);
}
.footer-bottom{
  border-top:1px solid var(--c-border);
  padding:18px 0 26px;
  display:flex;flex-wrap:wrap;gap:8px;justify-content:center;
  font-size:13px;color:var(--c-muted);text-align:center;
}

/* ============ 图片兜底 ============ */
img.is-missing{
  background:#E9EFF7;
  border:1px dashed #C3D2E2;
  color:#8CA0B8;
  font-size:13px;
  min-height:120px;
}

/* 通用小工具 */
.mt-6{margin-top:24px;}
.mt-8{margin-top:32px;}
.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;
}

/* roulang page: category4 */
:root{
    --c-primary:#14507F;
    --c-primary-700:#0F3C60;
    --c-primary-soft:#EAF2FA;
    --c-accent:#0FA3A3;
    --c-accent-soft:#E6F6F6;
    --c-cta:#FF7A29;
    --c-cta-700:#E9651A;
    --c-bg:#F5F8FC;
    --c-surface:#FFFFFF;
    --c-border:#E2E9F3;
    --c-text:#0D1B2A;
    --c-muted:#5A6B80;
    --r-card:14px;
    --r-lg:18px;
    --r-btn:10px;
    --sh-card:0 6px 24px -8px rgba(20,80,127,.14);
    --sh-hover:0 14px 36px -10px rgba(20,80,127,.24);
    --sh-line:0 1px 2px rgba(13,27,42,.05);
    --nav-w:256px;
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--c-bg);
    color:var(--c-text);
    font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
    font-size:16px;
    line-height:1.9;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;height:auto;}
  a{color:inherit;text-decoration:none;transition:color .18s ease;}
  button{font:inherit;}
  ul,ol{margin:0;padding:0;list-style:none;}
  p{margin:0;}
  :focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}
  ::-webkit-scrollbar{width:10px;height:10px;}
  ::-webkit-scrollbar-track{background:var(--c-bg);}
  ::-webkit-scrollbar-thumb{background:#C9D6E6;border-radius:999px;border:3px solid var(--c-bg);}
  ::-webkit-scrollbar-thumb:hover{background:#AEC2D8;}

  .container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px;}

  .page-shell{display:flex;flex-direction:column;min-height:100vh;}
  .page-shell h1{font-size:clamp(30px,4vw,44px);font-weight:700;letter-spacing:-.01em;line-height:1.25;}
  .page-shell h2{font-size:clamp(24px,2.6vw,32px);font-weight:700;line-height:1.35;}
  .page-shell h3{font-size:20px;font-weight:600;line-height:1.5;}
  .page-shell h4{font-size:17px;font-weight:600;line-height:1.5;}
  main{flex:1;}

  /* ============ 左侧竖向导航 ============ */
  .side-nav{
    position:fixed;top:0;bottom:0;left:0;width:var(--nav-w);
    background:var(--c-surface);border-right:1px solid var(--c-border);
    padding:22px 18px 24px;display:none;flex-direction:column;gap:22px;
    overflow-y:auto;z-index:50;
  }
  .brand{display:flex;align-items:center;gap:12px;}
  .brand-mark{
    position:relative;overflow:hidden;flex:none;
    width:40px;height:40px;border-radius:10px;
    background:linear-gradient(140deg,var(--c-primary),var(--c-primary-700));
    color:#fff;display:grid;place-items:center;font-weight:700;font-size:18px;
  }
  .brand-mark::after{
    content:"";position:absolute;right:-8px;bottom:-12px;width:30px;height:30px;
    background:rgba(15,163,163,.55);border-radius:5px;transform:rotate(35deg);
  }
  .brand-mark i{position:relative;z-index:1;font-style:normal;}
  .brand-text b{display:block;font-size:14px;line-height:1.45;color:var(--c-text);font-weight:700;letter-spacing:.01em;}
  .brand-text em{display:block;font-size:11px;letter-spacing:.14em;color:var(--c-muted);font-style:normal;}

  .nav-group{display:flex;flex-direction:column;gap:4px;}
  .nav-label{font-size:13px;letter-spacing:.08em;color:var(--c-muted);padding:0 12px;margin-bottom:8px;}
  .nav-item{
    display:flex;align-items:center;gap:10px;
    padding:10px 12px;border-radius:8px;
    color:var(--c-muted);font-size:15px;line-height:1.5;
    border-left:3px solid transparent;
  }
  .nav-item i{width:18px;font-size:14px;text-align:center;opacity:.9;}
  .nav-item:hover{background:#F3F6FB;color:var(--c-primary);}
  .nav-item.is-active{background:var(--c-primary-soft);color:var(--c-primary);border-left-color:var(--c-accent);font-weight:600;}

  .side-foot{margin-top:auto;display:flex;flex-direction:column;gap:12px;padding-top:20px;border-top:1px solid var(--c-border);}
  .side-foot .btn{justify-content:center;}
  .side-foot p{font-size:12px;line-height:1.7;color:var(--c-muted);}

  @media (min-width:1024px){
    .side-nav{display:flex;}
    .page-shell{padding-left:var(--nav-w);}
  }

  /* ============ 移动端顶部条与抽屉 ============ */
  .mobile-bar{
    position:sticky;top:0;z-index:40;height:60px;
    display:flex;align-items:center;justify-content:space-between;
    gap:12px;padding:0 16px;background:var(--c-surface);
    border-bottom:1px solid var(--c-border);transition:box-shadow .2s ease;
  }
  .mobile-bar.is-scrolled{box-shadow:0 4px 16px -6px rgba(13,27,42,.16);}
  .mobile-bar .brand-mark{width:34px;height:34px;border-radius:9px;font-size:16px;}
  .mobile-bar .brand-name{font-size:15px;font-weight:700;letter-spacing:.01em;}
  .hamburger{
    width:40px;height:40px;border-radius:10px;border:1px solid var(--c-border);
    background:#fff;color:var(--c-primary);display:grid;place-items:center;cursor:pointer;
    transition:background .18s ease,border-color .18s ease;
  }
  .hamburger:hover{background:var(--c-primary-soft);border-color:#CFE0F0;}
  @media (min-width:1024px){.mobile-bar{display:none;}}

  .drawer-mask{
    position:fixed;inset:0;background:rgba(13,27,42,.45);
    opacity:0;pointer-events:none;transition:opacity .25s ease;z-index:60;
  }
  .drawer{
    position:fixed;top:0;bottom:0;left:0;width:80%;max-width:320px;
    background:var(--c-surface);padding:20px;display:flex;flex-direction:column;gap:20px;
    transform:translateX(-102%);transition:transform .28s ease;z-index:61;overflow-y:auto;
  }
  body.drawer-open{overflow:hidden;}
  body.drawer-open .drawer{transform:translateX(0);}
  body.drawer-open .drawer-mask{opacity:1;pointer-events:auto;}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;}

  /* ============ 通用排版与组件 ============ */
  .section{padding:64px 0;}
  @media (min-width:1024px){.section{padding:96px 0;}}
  .section-head{max-width:760px;margin-bottom:36px;}
  .section-title{position:relative;padding-left:14px;}
  .section-title::before{
    content:"";position:absolute;left:0;top:.3em;bottom:.3em;width:3px;
    border-radius:3px;background:var(--c-primary);
  }
  .section-desc{color:var(--c-muted);font-size:15px;line-height:1.8;margin-top:14px;}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:13px;letter-spacing:.08em;color:var(--c-primary);
    background:var(--c-primary-soft);padding:6px 12px;border-radius:999px;font-weight:500;
  }
  .divider-line{height:1px;background:var(--c-border);border:0;margin:0;}

  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    padding:12px 24px;border-radius:var(--r-btn);border:1px solid transparent;
    font-size:15px;font-weight:600;line-height:1.4;cursor:pointer;
    transition:background .18s ease-out,color .18s ease-out,box-shadow .18s ease-out,transform .18s ease-out,border-color .18s ease-out;
  }
  .btn-primary{background:var(--c-cta);color:#fff;box-shadow:0 6px 18px -8px rgba(255,122,41,.6);}
  .btn-primary:hover{background:var(--c-cta-700);color:#fff;transform:translateY(-1px);box-shadow:0 10px 24px -8px rgba(255,122,41,.45);}
  .btn-primary:active{transform:translateY(1px);box-shadow:0 3px 10px -6px rgba(255,122,41,.5);}
  .btn-ghost{background:#fff;border-color:var(--c-border);color:var(--c-primary);}
  .btn-ghost:hover{background:var(--c-primary-soft);border-color:#CFE0F0;color:var(--c-primary-700);}
  .btn-ghost:active{transform:translateY(1px);}

  .badge{
    display:inline-flex;align-items:center;gap:6px;
    font-size:12px;font-weight:500;letter-spacing:.02em;
    padding:5px 12px;border-radius:999px;
    background:var(--c-primary-soft);color:var(--c-primary);
  }
  .badge-accent{background:var(--c-accent-soft);color:var(--c-accent);}

  .card{
    background:var(--c-surface);border:1px solid var(--c-border);
    border-radius:var(--r-card);box-shadow:var(--sh-card);
    transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
  }
  .card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);border-color:#CFE0F0;}

  /* ============ Hero ============ */
  .hero{
    position:relative;padding:44px 0 56px;border-bottom:1px solid var(--c-border);
    background:
      radial-gradient(1100px 420px at 82% -12%,rgba(15,163,163,.15),transparent 62%),
      radial-gradient(900px 380px at 4% 0%,rgba(20,80,127,.13),transparent 64%),
      var(--c-bg);
  }
  @media (min-width:1024px){.hero{padding:76px 0 88px;}}
  .hero-grid{display:grid;gap:36px;}
  @media (min-width:1024px){.hero-grid{grid-template-columns:1.05fr .95fr;align-items:center;gap:52px;}}
  .hero h1{margin:18px 0 12px;}
  .hero-sub{font-size:18px;font-weight:600;color:var(--c-primary-700);line-height:1.7;}
  .hero-lead{color:var(--c-muted);margin-top:14px;max-width:580px;font-size:16px;line-height:1.9;}
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
  .hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
  .hero-badge{
    display:inline-flex;align-items:center;gap:8px;
    font-size:13px;color:var(--c-primary);background:#fff;
    border:1px solid var(--c-border);border-radius:999px;
    padding:7px 14px;box-shadow:var(--sh-line);
  }
  .hero-badge i{color:var(--c-accent);font-size:12px;}

  .hero-media{position:relative;}
  .hero-media img{width:100%;height:280px;object-fit:cover;border-radius:var(--r-lg);box-shadow:var(--sh-card);}
  @media (min-width:768px){.hero-media img{height:350px;}}
  .hero-media::after{
    content:"";position:absolute;inset:0;border-radius:var(--r-lg);pointer-events:none;
    background:
      linear-gradient(92deg,rgba(245,248,252,.55),rgba(245,248,252,0) 46%),
      linear-gradient(0deg,rgba(20,80,127,.24),rgba(20,80,127,0) 58%);
  }
  .float-card{
    position:absolute;right:14px;bottom:14px;z-index:2;
    background:#fff;border:1px solid var(--c-border);border-radius:10px;
    padding:12px 16px;box-shadow:var(--sh-card);
  }
  .float-card b{display:block;font-size:22px;font-weight:700;color:var(--c-primary);line-height:1.25;}
  .float-card span{font-size:12px;color:var(--c-muted);}

  /* ============ 数据条 ============ */
  .stats{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;}
  @media (min-width:768px){.stats{grid-template-columns:repeat(4,1fr);gap:20px;}}
  .stat{
    background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-card);
    padding:20px;box-shadow:var(--sh-line);transition:box-shadow .2s ease,transform .2s ease;
  }
  .stat:hover{box-shadow:var(--sh-card);transform:translateY(-2px);}
  .stat b{display:block;font-size:26px;font-weight:700;color:var(--c-primary);line-height:1.2;}
  .stat span{display:block;font-size:13px;color:var(--c-muted);letter-spacing:.04em;margin-top:6px;}

  /* ============ 对照卡片矩阵 ============ */
  .grid-matrix{display:grid;gap:22px;}
  @media (min-width:768px){.grid-matrix{grid-template-columns:repeat(2,1fr);}}
  @media (min-width:1024px){.grid-matrix{grid-template-columns:repeat(3,1fr);gap:26px;}}
  .mx-card{
    background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-card);
    padding:24px;box-shadow:var(--sh-card);
    transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
  }
  .mx-card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);border-color:#CFE0F0;}
  .mx-icon{
    width:40px;height:40px;border-radius:10px;display:grid;place-items:center;
    background:var(--c-primary-soft);color:var(--c-primary);font-size:17px;margin-bottom:16px;
  }
  .mx-card:nth-child(even) .mx-icon{background:var(--c-accent-soft);color:var(--c-accent);}
  .mx-card h3{margin-bottom:10px;}
  .mx-card > p{color:var(--c-muted);font-size:15px;line-height:1.8;margin-bottom:14px;}
  .mx-list li{position:relative;padding-left:18px;font-size:14px;color:var(--c-muted);line-height:1.8;}
  .mx-list li + li{margin-top:6px;}
  .mx-list li::before{
    content:"";position:absolute;left:2px;top:.72em;width:6px;height:6px;
    border-radius:50%;background:var(--c-primary);
  }

  /* ============ 处理步骤 ============ */
  .steps{display:grid;gap:18px;}
  @media (min-width:768px){.steps{grid-template-columns:repeat(2,1fr);}}
  @media (min-width:1024px){.steps{grid-template-columns:repeat(4,1fr);gap:22px;}}
  .step{
    position:relative;background:var(--c-surface);border:1px solid var(--c-border);
    border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-line);
    transition:transform .22s ease,box-shadow .22s ease;
  }
  .step:hover{transform:translateY(-3px);box-shadow:var(--sh-card);}
  .step-no{font-size:13px;font-weight:600;letter-spacing:.14em;color:var(--c-accent);}
  .step h3{margin:10px 0 8px;font-size:17px;}
  .step p{font-size:14px;color:var(--c-muted);line-height:1.8;}

  /* ============ FAQ ============ */
  .faq-wrap{max-width:900px;}
  .faq-item{
    background:var(--c-surface);border:1px solid var(--c-border);border-radius:14px;
    margin-bottom:14px;box-shadow:var(--sh-line);overflow:hidden;
    transition:box-shadow .2s ease,border-color .2s ease;
  }
  .faq-item[open]{box-shadow:var(--sh-card);border-color:#CFE0F0;}
  .faq-item summary{
    list-style:none;display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:18px 22px;cursor:pointer;font-size:16px;font-weight:600;color:var(--c-text);
    transition:color .18s ease;
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary:hover{color:var(--c-primary);}
  .faq-ico{position:relative;width:16px;height:16px;flex:none;}
  .faq-ico::before,.faq-ico::after{content:"";position:absolute;background:var(--c-primary);border-radius:2px;}
  .faq-ico::before{left:0;right:0;top:7px;height:1.5px;}
  .faq-ico::after{top:0;bottom:0;left:7px;width:1.5px;transition:transform .2s ease;}
  .faq-item[open] .faq-ico::after{transform:scaleY(0);}
  .faq-body{padding:0 22px 22px;}
  .faq-body p{color:var(--c-muted);font-size:15px;line-height:1.85;}

  /* ============ 相关分类入口 ============ */
  .rel-grid{display:grid;gap:22px;}
  @media (min-width:768px){.rel-grid{grid-template-columns:repeat(3,1fr);}}
  .rel-card{
    display:block;background:var(--c-surface);border:1px solid var(--c-border);
    border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-card);
    transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
  }
  .rel-card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);border-color:#CFE0F0;}
  .rel-card img{width:100%;height:168px;object-fit:cover;transition:transform .35s ease;}
  .rel-card:hover img{transform:scale(1.03);}
  .rel-body{padding:20px;}
  .rel-body h3{font-size:17px;margin-bottom:8px;}
  .rel-body p{font-size:14px;color:var(--c-muted);line-height:1.8;}
  .rel-link{
    display:inline-flex;align-items:center;gap:6px;margin-top:14px;
    color:var(--c-primary);font-size:14px;font-weight:600;transition:color .18s ease,gap .18s ease;
  }
  .rel-card:hover .rel-link{color:var(--c-cta);gap:10px;}

  /* ============ CTA 条 ============ */
  .cta{
    background:linear-gradient(180deg,#EAF2FA,#E3EEF8);
    border:1px solid #D6E5F3;border-radius:var(--r-lg);
    padding:30px;display:grid;gap:20px;
  }
  @media (min-width:1024px){
    .cta{grid-template-columns:1fr auto;align-items:center;padding:42px 46px;gap:32px;}
  }
  .cta h2{font-size:clamp(20px,2.4vw,25px);}
  .cta p{color:var(--c-muted);margin-top:10px;font-size:15px;line-height:1.85;max-width:640px;}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

  /* ============ 页脚 ============ */
  .site-footer{background:var(--c-surface);border-top:1px solid var(--c-border);padding:56px 0 0;}
  .footer-grid{display:grid;gap:32px;}
  @media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr);}}
  @media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.5fr;gap:40px;}}
  .footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:14px;}
  .footer-brand .brand-mark{width:40px;height:40px;}
  .footer-brand b{display:block;font-size:15px;font-weight:700;line-height:1.5;}
  .footer-brand span em{display:block;font-size:11px;letter-spacing:.14em;color:var(--c-muted);font-style:normal;}
  .footer-col h4{font-size:14px;letter-spacing:.04em;margin-bottom:14px;color:var(--c-text);}
  .footer-col ul li + li{margin-top:10px;}
  .footer-col ul a{font-size:14px;color:var(--c-muted);}
  .footer-col ul a:hover{color:var(--c-primary);text-decoration:underline;text-underline-offset:4px;}
  .footer-note{font-size:13px;color:var(--c-muted);line-height:1.8;}
  .footer-bottom{
    border-top:1px solid var(--c-border);margin-top:40px;padding:20px 0;
    display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
    font-size:13px;color:var(--c-muted);
  }

  @media (max-width:520px){
    .hero-actions .btn{width:100%;}
    .cta-actions .btn{width:100%;}
    .float-card{right:10px;bottom:10px;padding:10px 13px;}
    .float-card b{font-size:19px;}
  }