/* roulang page: index */
:root{
  --brand:#14639B;
  --brand-700:#0F4F7C;
  --brand-050:#EAF2F9;
  --brand-200:#BBD5E8;
  --accent:#F07A2E;
  --ok:#12A594;
  --warn:#E0A32B;
  --ink:#16283A;
  --ink-2:#4A6076;
  --ink-3:#7B8FA3;
  --bg:#F6F9FC;
  --surface:#FFFFFF;
  --surface-2:#EFF5FA;
  --line:#E3EAF2;
  --r-card:14px;
  --r-img:12px;
  --r-lg:20px;
  --r-btn:12px;
  --r-input:10px;
  --shadow-1:0 1px 2px rgba(19,42,58,.06), 0 6px 16px rgba(19,42,58,.06);
  --shadow-2:0 12px 28px rgba(19,42,58,.10);
  --sidebar-w:232px;
  --bs-primary:#14639B;
  --bs-body-color:#16283A;
  --bs-border-color:#E3EAF2;
  --bs-border-radius:14px;
  --bs-link-color:#14639B;
  --bs-link-hover-color:#0F4F7C;
  --bs-font-sans-serif:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
body.no-scroll{overflow:hidden;}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-700);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;line-height:1.35;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
.skip-link{
  position:absolute;left:-9999px;top:0;background:var(--brand);color:#fff;
  padding:10px 18px;border-radius:0 0 var(--r-btn) 0;z-index:2000;
}
.skip-link:focus{left:0;color:#fff;}

/* ---------- App Shell ---------- */
.app-sidebar{
  position:fixed;inset:0 auto 0 0;width:var(--sidebar-w);
  background:var(--surface);border-right:1px solid var(--line);
  display:flex;flex-direction:column;z-index:1040;
}
.sidebar-brand{
  height:72px;display:flex;align-items:center;gap:10px;
  padding:0 20px;border-bottom:1px solid var(--line);
}
.brand-mark{
  width:20px;height:20px;border-radius:6px;flex:0 0 20px;
  background:linear-gradient(135deg,var(--brand) 0%,var(--brand-700) 100%);
  position:relative;
}
.brand-mark::after{
  content:"";position:absolute;right:-3px;bottom:-3px;width:8px;height:8px;
  border-radius:50%;background:var(--accent);
}
.brand-text{
  font-size:16px;font-weight:800;letter-spacing:-.01em;color:var(--ink);
  line-height:1.2;white-space:nowrap;
}
.sidebar-nav{padding:18px 12px;display:flex;flex-direction:column;gap:4px;flex:1 1 auto;overflow-y:auto;}
.sidebar-nav .nav-link-item{
  display:flex;align-items:center;gap:12px;height:48px;padding:0 12px;
  border-radius:10px;color:var(--ink-2);font-size:15px;font-weight:500;
  position:relative;transition:background .2s ease,color .2s ease;
}
.sidebar-nav .nav-link-item:hover{background:var(--surface-2);color:var(--ink);}
.sidebar-nav .nav-link-item.active{
  background:var(--brand-050);color:var(--brand);font-weight:600;
}
.sidebar-nav .nav-link-item.active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;
  border-radius:3px;background:var(--brand);
}
.nav-ico{width:18px;height:18px;flex:0 0 18px;stroke:currentColor;fill:none;stroke-width:1.7;}
.sidebar-foot{padding:16px 20px 22px;border-top:1px solid var(--line);}
.side-note{font-size:12px;color:var(--ink-3);margin:12px 0 0;line-height:1.6;word-break:break-all;}

/* ---------- Buttons ---------- */
.btn-brand,.btn-outline-brand,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;text-align:center;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn-brand{background:var(--brand);color:#fff;box-shadow:var(--shadow-1);}
.btn-brand:hover{background:var(--brand-700);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-brand:active{transform:translateY(0);}
.btn-outline-brand{background:transparent;color:var(--brand);border-color:var(--brand-200);}
.btn-outline-brand:hover{background:var(--brand-050);color:var(--brand-700);border-color:var(--brand);}
.btn-ghost{background:rgba(255,255,255,.86);color:var(--brand-700);border-color:rgba(255,255,255,.9);}
.btn-ghost:hover{background:#fff;color:var(--brand);}
.btn-block{width:100%;}
.btn-lg{height:48px;padding:0 28px;font-size:16px;}
.text-link{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand);
}
.text-link:hover{gap:10px;}

/* ---------- Layout ---------- */
.app-main{margin-left:var(--sidebar-w);}
.container-x{max-width:1120px;margin:0 auto;padding:0 40px;}
.section{padding:88px 0;}
.section-tight{padding:56px 0;}
.section-head{margin-bottom:36px;max-width:760px;}
.section-head .eyebrow{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:.06em;
  color:var(--brand);background:var(--brand-050);border-radius:999px;
  padding:4px 12px;margin-bottom:14px;
}
.section-head h2{font-size:clamp(22px,2.4vw,30px);font-weight:700;margin-bottom:12px;}
.section-head p{color:var(--ink-2);font-size:15px;}
.section-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;}

/* ---------- Hero ---------- */
.hero{position:relative;padding:64px 0 72px;overflow:hidden;}
.hero::before{
  content:"";position:absolute;top:-10%;right:-60px;width:8%;max-width:120px;height:120%;
  background:var(--brand-050);transform:skewX(-12deg);z-index:0;
}
.hero-inner{position:relative;z-index:1;display:grid;grid-template-columns:58% 42%;gap:40px;align-items:center;}
.hero-copy .hero-tag{
  display:inline-block;font-size:12px;font-weight:700;color:var(--brand);
  background:var(--brand-050);border:1px solid var(--brand-200);
  border-radius:999px;padding:5px 14px;margin-bottom:18px;
}
.hero-copy h1{
  font-size:clamp(28px,4vw,44px);line-height:1.25;font-weight:800;letter-spacing:-.01em;
  margin-bottom:18px;
}
.hero-sub{max-width:46ch;color:var(--ink-2);font-size:16px;margin-bottom:26px;}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:28px;}
.hero-points{display:flex;flex-wrap:wrap;gap:18px;}
.hero-points li{
  display:flex;align-items:center;gap:8px;font-size:14px;color:var(--ink-2);
}
.hero-points li::before{
  content:"";width:6px;height:6px;border-radius:2px;background:var(--accent);flex:0 0 6px;
}
.hero-media{position:relative;border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--shadow-1);}
.hero-media img{width:100%;height:420px;object-fit:cover;}
.hero-media::after{
  content:"";position:absolute;inset:0;background:rgba(246,249,252,.18);
}
.hero-block{
  position:absolute;right:18px;bottom:18px;width:88px;height:88px;border-radius:18px;
  background:rgba(255,255,255,.86);border:1px solid rgba(187,213,232,.9);z-index:2;
}
.hero-block::before{
  content:"";position:absolute;left:18px;top:22px;width:52px;height:6px;border-radius:3px;background:var(--brand);
}
.hero-block::after{
  content:"";position:absolute;left:18px;top:40px;width:34px;height:6px;border-radius:3px;background:var(--brand-200);
}

/* ---------- Stats ---------- */
.stats-band{padding:0 0 16px;}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.stat-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--shadow-1);
}
.stat-num{font-size:28px;font-weight:800;color:var(--brand);font-variant-numeric:tabular-nums;line-height:1.2;}
.stat-num small{font-size:14px;font-weight:600;margin-left:2px;}
.stat-label{font-size:13px;color:var(--ink-3);margin-top:6px;}

/* ---------- Steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative;}
.step-card{position:relative;padding-right:12px;}
.step-card::after{
  content:"";position:absolute;top:18px;right:-12px;width:24px;border-top:2px dashed var(--brand-200);
}
.step-card:last-child::after{display:none;}
.step-num{
  width:44px;height:44px;border-radius:50%;border:2px solid var(--brand-200);
  color:var(--brand);font-weight:800;font-size:15px;display:flex;align-items:center;justify-content:center;
  background:var(--surface);font-variant-numeric:tabular-nums;margin-bottom:16px;
}
.step-card h3{font-size:17px;margin-bottom:8px;}
.step-card p{font-size:14px;color:var(--ink-2);}

/* ---------- Benefits ---------- */
.benefit-grid{display:grid;grid-template-columns:60% 40%;gap:24px;}
.benefit-main,.benefit-side article{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-1);padding:28px;transition:transform .2s ease,box-shadow .2s ease;
}
.benefit-main:hover,.benefit-side article:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}
.benefit-main img{width:100%;height:190px;object-fit:cover;border-radius:var(--r-img);margin-bottom:20px;}
.benefit-icon{
  width:44px;height:44px;border-radius:12px;background:var(--brand-050);color:var(--brand);
  display:flex;align-items:center;justify-content:center;margin-bottom:16px;
}
.benefit-main h3,.benefit-side h3{font-size:18px;margin-bottom:10px;}
.benefit-main p,.benefit-side p{font-size:14px;color:var(--ink-2);}
.benefit-side{display:grid;gap:24px;grid-template-rows:1fr 1fr;}

/* ---------- Progress ---------- */
.progress-panel{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:32px;box-shadow:var(--shadow-1);
}
.progress-track{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:26px;}
.progress-seg{height:8px;border-radius:999px;background:var(--surface-2);border:1px solid var(--line);}
.progress-seg.done{background:var(--brand);border-color:var(--brand);}
.progress-seg.current{
  background:var(--brand);border-color:var(--brand);animation:pulse 1.6s ease-in-out infinite;
}
@keyframes pulse{0%,100%{opacity:1;}50%{opacity:.55;}}
.progress-legend{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:24px;}
.progress-legend span{font-size:13px;color:var(--ink-2);}
.progress-notes{display:grid;gap:10px;border-top:1px solid var(--line);padding-top:20px;}
.progress-notes li{display:flex;gap:10px;font-size:14px;color:var(--ink-2);}
.progress-notes li::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--brand-200);
  flex:0 0 6px;margin-top:9px;
}

/* ---------- News / CMS ---------- */
.news-feature{
  display:grid;grid-template-columns:45% 55%;gap:0;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--shadow-1);transition:transform .2s ease,box-shadow .2s ease;margin-bottom:24px;
}
.news-feature:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}
.news-feature .thumb{height:100%;min-height:260px;overflow:hidden;}
.news-feature .thumb img{width:100%;height:100%;object-fit:cover;}
.news-feature .body{padding:28px;display:flex;flex-direction:column;gap:12px;}
.news-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.news-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow-1);display:flex;flex-direction:column;
  transition:transform .2s ease,box-shadow .2s ease;
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}
.news-card .thumb{aspect-ratio:16/9;overflow:hidden;background:var(--brand-050);}
.news-card .thumb img{width:100%;height:100%;object-fit:cover;}
.news-card .body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto;}
.card-title{font-size:17px;font-weight:700;line-height:1.5;color:var(--ink);}
.card-title a{color:inherit;}
.card-title a:hover{color:var(--brand);}
.card-summary{
  font-size:14px;color:var(--ink-2);display:-webkit-box;-webkit-line-clamp:2;
  -webkit-box-orient:vertical;overflow:hidden;
}
.card-meta{
  display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;
  font-size:13px;color:var(--ink-3);font-variant-numeric:tabular-nums;
}
.badge-tag{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  font-size:12px;font-weight:600;background:var(--brand-050);color:var(--brand);
}
.badge-accent{background:#FDF1E7;color:#B4551A;}
.empty-state{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:56px 24px;text-align:center;box-shadow:var(--shadow-1);
}
.empty-state svg{width:48px;height:48px;stroke:var(--brand-200);fill:none;stroke-width:1.6;margin:0 auto 16px;}
.empty-state p{color:var(--ink-2);font-size:14px;margin-bottom:20px;}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:14px;}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-1);overflow:hidden;position:relative;
}
.faq-item[open]::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--brand);
}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 56px 20px 24px;font-size:16px;font-weight:600;
  color:var(--ink);position:relative;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"";position:absolute;right:24px;top:50%;width:14px;height:2px;
  background:var(--brand);transform:translateY(-50%);
}
.faq-item summary::before{
  content:"";position:absolute;right:30px;top:50%;width:2px;height:14px;
  background:var(--brand);transform:translateY(-50%);transition:transform .2s ease,opacity .2s ease;
}
.faq-item[open] summary::before{transform:translateY(-50%) scaleY(0);opacity:0;}
.faq-item .faq-body{padding:0 24px 22px;font-size:15px;color:var(--ink-2);}

/* ---------- CTA ---------- */
.cta-band{background:var(--brand-050);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.cta-inner{
  display:flex;align-items:center;justify-content:space-between;gap:28px;
  padding:40px 0;flex-wrap:wrap;
}
.cta-inner h2{font-size:clamp(20px,2.2vw,26px);margin-bottom:8px;}
.cta-inner p{color:var(--ink-2);font-size:15px;margin:0;}

/* ---------- Footer ---------- */
.site-footer{margin-left:var(--sidebar-w);background:var(--surface);border-top:1px solid var(--line);}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px;padding:56px 0 32px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-col h4{font-size:15px;margin-bottom:14px;}
.footer-col p,.footer-col li{font-size:14px;color:var(--ink-2);}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{font-size:14px;color:var(--ink-2);}
.footer-col a:hover{color:var(--brand);}
.footer-bottom{
  border-top:1px solid var(--line);padding:18px 0 24px;font-size:12px;color:var(--ink-3);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
}

/* ---------- Mobile topbar & drawer ---------- */
.mobile-topbar{
  display:none;position:sticky;top:0;z-index:1050;height:56px;
  background:var(--surface);border-bottom:1px solid var(--line);
  align-items:center;justify-content:space-between;padding:0 16px;gap:12px;
  transition:box-shadow .2s ease;
}
.mobile-topbar.is-scrolled{box-shadow:var(--shadow-1);}
.hamburger{
  width:44px;height:44px;border:0;background:transparent;display:flex;
  flex-direction:column;justify-content:center;gap:5px;padding:0 10px;cursor:pointer;
}
.hamburger span{display:block;height:2px;border-radius:2px;background:var(--ink);}
.mobile-brand{font-weight:800;font-size:15px;color:var(--ink);}
.mobile-cta{
  height:36px;padding:0 14px;border-radius:10px;background:var(--brand);color:#fff;
  font-size:13px;font-weight:600;display:inline-flex;align-items:center;
}
.mobile-cta:hover{color:#fff;background:var(--brand-700);}
.drawer-mask{
  display:none;position:fixed;inset:0;background:rgba(19,42,58,.42);z-index:1041;
}
.drawer-mask.is-open{display:block;}

@media (max-width:1199.98px){
  .container-x{padding:0 32px;}
  .hero-media img{height:360px;}
}
@media (max-width:991.98px){
  .app-sidebar{
    transform:translateX(100%);transition:transform .24s ease;
    width:84vw;max-width:320px;inset:0 0 0 auto;border-right:0;border-left:1px solid var(--line);
  }
  .app-sidebar.is-open{transform:translateX(0);}
  .app-main,.site-footer{margin-left:0;}
  .mobile-topbar{display:flex;}
  .sidebar-brand{height:64px;}
  .hero-inner{grid-template-columns:1fr;gap:28px;}
  .hero-media img{height:300px;}
  .stats-grid{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:repeat(2,1fr);gap:28px;}
  .step-card::after{display:none;}
  .benefit-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:767.98px){
  .container-x{padding:0 20px;}
  .section{padding:56px 0;}
  .hero{padding:36px 0 48px;}
  .hero-media img{height:230px;}
  .stats-grid{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;}
  .news-feature{grid-template-columns:1fr;}
  .news-feature .thumb{min-height:200px;aspect-ratio:16/9;}
  .news-grid{grid-template-columns:1fr;}
  .progress-track,.progress-legend{grid-template-columns:repeat(2,1fr);}
  .progress-panel{padding:22px;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .hero-block{display:none;}
}
@media (max-width:519.98px){
  .hero-copy h1{font-size:26px;}
  .btn-brand,.btn-outline-brand{width:100%;}
  .hero-actions{flex-direction:column;}
  .progress-track,.progress-legend{grid-template-columns:1fr;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
}

/* roulang page: article */
:root{
  --brand:#14639B;
  --brand-700:#0F4F7C;
  --brand-050:#EAF2F9;
  --brand-200:#BBD5E8;
  --accent:#F07A2E;
  --ok:#12A594;
  --warn:#E0A32B;
  --danger:#D6564B;
  --ink:#16283A;
  --ink-2:#4A6076;
  --ink-3:#7B8FA3;
  --bg:#F6F9FC;
  --surface:#FFFFFF;
  --surface-2:#EFF5FA;
  --line:#E3EAF2;
  --r-card:14px;
  --r-img:12px;
  --r-lg:20px;
  --r-btn:12px;
  --r-input:10px;
  --shadow-1:0 1px 2px rgba(19,42,58,.06),0 6px 16px rgba(19,42,58,.06);
  --shadow-2:0 12px 28px rgba(19,42,58,.10);
  --sidebar-w:232px;
  --bs-primary:#14639B;
  --bs-body-color:#16283A;
  --bs-border-color:#E3EAF2;
  --bs-border-radius:12px;
  --bs-link-color:#14639B;
  --bs-link-hover-color:#0F4F7C;
  --bs-font-sans-serif:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand);text-decoration:none;}
a:hover{color:var(--brand-700);}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
.container-x{max-width:1120px;margin:0 auto;padding:0 40px;width:100%;}
@media (min-width:1200px){.container-x{max-width:1200px;padding:0 56px;}}

/* ---------- 左侧 App Shell ---------- */
.app-sidebar{
  position:fixed;top:0;left:0;width:var(--sidebar-w);height:100vh;
  background:#fff;border-right:1px solid var(--line);
  display:flex;flex-direction:column;z-index:1040;
}
.sidebar-logo{
  height:72px;flex:none;display:flex;align-items:center;gap:10px;
  padding:0 20px;border-bottom:1px solid var(--line);
  color:var(--ink);font-weight:800;letter-spacing:-0.01em;font-size:16px;
}
.sidebar-logo:hover{color:var(--ink);}
.brand-mark{
  position:relative;width:18px;height:18px;flex:none;display:inline-block;
  background:var(--brand);border-radius:5px;
}
.brand-mark::after{
  content:"";position:absolute;right:-5px;bottom:-5px;width:10px;height:10px;
  border-radius:3px;background:var(--accent);
}
.side-nav{flex:1;padding:16px 12px;overflow-y:auto;}
.side-nav a{
  position:relative;display:flex;align-items:center;gap:12px;
  height:48px;padding:0 14px;border-radius:10px;
  color:var(--ink-2);font-size:15px;line-height:1;
  transition:background .2s ease,color .2s ease;
}
.side-nav a svg{width:18px;height:18px;flex:none;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
.side-nav a:hover{background:var(--surface-2);color:var(--ink);}
.side-nav a.active{background:var(--brand-050);color:var(--brand);font-weight:600;}
.side-nav a.active::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;
  border-radius:999px;background:var(--brand);
}
.side-foot{flex:none;padding:16px 20px 22px;border-top:1px solid var(--line);}
.side-foot small{display:block;margin-top:14px;font-size:12px;line-height:1.7;color:var(--ink-3);}

/* ---------- 按钮 ---------- */
.btn-brand,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;
  height:44px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;
  transition:background .2s ease,color .2s ease,box-shadow .2s ease,transform .2s ease,border-color .2s ease;
}
.btn-brand{background:var(--brand);border:1px solid var(--brand);color:#fff;}
.btn-brand:hover{background:var(--brand-700);border-color:var(--brand-700);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-brand:active{transform:translateY(0);box-shadow:none;}
.btn-ghost{background:transparent;border:1px solid var(--brand-200);color:var(--brand);}
.btn-ghost:hover{background:var(--brand-050);border-color:var(--brand);color:var(--brand-700);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0);}
.side-foot .btn-brand{width:100%;}

/* ---------- 移动顶栏 ---------- */
.mobile-topbar{
  display:none;position:sticky;top:0;z-index:1050;height:56px;
  align-items:center;gap:12px;padding:0 14px;
  background:#fff;border-bottom:1px solid var(--line);
}
.mobile-topbar.is-scrolled{box-shadow:var(--shadow-1);}
.hamburger{
  width:44px;height:44px;flex:none;border:0;background:transparent;
  display:flex;flex-direction:column;justify-content:center;align-items:center;gap:5px;cursor:pointer;
}
.hamburger span{display:block;width:20px;height:2px;border-radius:2px;background:var(--ink);}
.mobile-brand{
  flex:1;min-width:0;font-size:15px;font-weight:800;color:var(--ink);
  letter-spacing:-0.01em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.mobile-brand:hover{color:var(--ink);}
.mobile-cta{
  flex:none;height:36px;padding:0 16px;border-radius:10px;
  display:inline-flex;align-items:center;font-size:13px;font-weight:600;
  background:var(--brand);color:#fff;
}
.mobile-cta:hover{background:var(--brand-700);color:#fff;}
.drawer-mask{
  position:fixed;inset:0;background:rgba(19,42,58,.42);
  opacity:0;visibility:hidden;transition:opacity .22s ease,visibility .22s ease;z-index:1055;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}

/* ---------- 主内容 ---------- */
.app-main{margin-left:var(--sidebar-w);min-height:100vh;display:flex;flex-direction:column;}
.page{padding:36px 0 72px;flex:1;}

/* 面包屑 */
.crumb-bar{margin-bottom:22px;}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  list-style:none;margin:0;padding:0;font-size:13px;color:var(--ink-3);
}
.breadcrumb li{display:flex;align-items:center;gap:8px;max-width:100%;}
.breadcrumb li+li::before{content:"/";color:var(--line);}
.breadcrumb a{color:var(--ink-3);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb li[aria-current]{color:var(--ink-2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:340px;}

/* 文章头 */
.badge-soft{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;
  border-radius:999px;background:var(--brand-050);color:var(--brand);
  font-size:12px;font-weight:600;line-height:1;
}
.article-head{max-width:820px;margin-bottom:24px;}
.article-head h1{
  font-size:clamp(26px,3vw,36px);line-height:1.3;font-weight:800;
  color:var(--ink);letter-spacing:-0.01em;margin:14px 0 16px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:13px;color:var(--ink-3);font-variant-numeric:tabular-nums;
}
.article-meta .dot{width:4px;height:4px;border-radius:999px;background:var(--brand-200);flex:none;}

/* 封面 */
.article-cover{
  border-radius:16px;overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--shadow-1);margin-bottom:40px;background:var(--brand-050);
}
.article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;}

/* 正文 */
.article-body{
  max-width:760px;font-size:16px;line-height:1.85;color:var(--ink-2);
}
.article-body p{margin:0 0 1.4em;}
.article-body h2{
  position:relative;font-size:21px;line-height:1.4;font-weight:700;
  color:var(--ink);margin:40px 0 16px;padding-left:14px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:5px;bottom:5px;width:4px;
  border-radius:999px;background:var(--brand);
}
.article-body h3{font-size:17px;line-height:1.5;font-weight:600;color:var(--brand);margin:26px 0 10px;}
.article-body h4{font-size:16px;font-weight:600;color:var(--ink);margin:22px 0 10px;}
.article-body ul,.article-body ol{list-style:none;margin:0 0 1.4em;padding:0;}
.article-body ul li{position:relative;padding-left:20px;margin-bottom:10px;}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;
  border-radius:2px;background:var(--brand-200);
}
.article-body ol{counter-reset:olnum;}
.article-body ol li{position:relative;padding-left:28px;margin-bottom:10px;counter-increment:olnum;}
.article-body ol li::before{
  content:counter(olnum);position:absolute;left:0;top:.42em;
  width:18px;height:18px;border-radius:6px;background:var(--brand-050);
  color:var(--brand);font-size:11px;font-weight:700;line-height:18px;text-align:center;
}
.article-body blockquote{
  margin:0 0 1.4em;padding:16px 20px;background:var(--brand-050);
  border-left:3px solid var(--brand);border-radius:0 10px 10px 0;
  color:var(--ink-2);font-style:normal;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:12px;margin:22px auto;}
.article-body figure{margin:22px 0;}
.article-body figcaption{font-size:13px;color:var(--ink-3);text-align:center;margin-top:8px;}
.article-body table{width:100%;border-collapse:collapse;font-size:14px;margin:0 0 1.4em;}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 12px;text-align:left;}
.article-body thead th{background:var(--brand-050);color:var(--ink);font-weight:600;}
.article-body tbody tr:nth-child(even){background:#FAFCFE;}
.article-body code{
  background:var(--surface-2);border-radius:6px;padding:2px 6px;
  font-size:14px;color:var(--brand-700);
}
.article-body a{text-decoration:underline;text-underline-offset:3px;}

/* 空态 */
.empty-state{
  max-width:760px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--shadow-1);
  padding:56px 32px;text-align:center;
}
.empty-state svg{width:48px;height:48px;stroke:var(--brand-200);fill:none;stroke-width:1.6;margin:0 auto 18px;}
.empty-state h2{font-size:20px;font-weight:700;color:var(--ink);margin:0 0 10px;}
.empty-state p{font-size:14px;color:var(--ink-3);margin:0 0 22px;}

/* 文末 */
.article-foot{max-width:760px;margin-top:44px;}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px;}
.tag{
  display:inline-flex;align-items:center;height:28px;padding:0 14px;
  border-radius:999px;border:1px solid var(--line);background:var(--surface);
  font-size:12px;color:var(--ink-2);
}
.divider{height:1px;background:var(--line);border:0;margin:0 0 26px;}
.article-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--surface);border-top:1px solid var(--line);padding:56px 0 26px;margin-top:auto;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px;}
.footer-brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:16px;color:var(--ink);letter-spacing:-0.01em;margin-bottom:14px;}
.footer-col p{font-size:14px;line-height:1.8;color:var(--ink-3);margin:0;max-width:320px;}
.footer-col h4{font-size:14px;font-weight:700;color:var(--ink);margin:0 0 16px;}
.footer-col ul{list-style:none;margin:0;padding:0;}
.footer-col li{font-size:14px;color:var(--ink-3);margin-bottom:12px;line-height:1.6;}
.footer-col a{color:var(--ink-2);font-size:14px;}
.footer-col a:hover{color:var(--brand);}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  border-top:1px solid var(--line);margin-top:40px;padding-top:20px;
  font-size:12px;color:var(--ink-3);
}

/* ---------- 响应式 ---------- */
@media (max-width:991.98px){
  .app-sidebar{
    left:auto;right:0;width:84vw;max-width:320px;
    transform:translateX(100%);transition:transform .24s ease;
    box-shadow:var(--shadow-2);z-index:1060;
  }
  .app-sidebar.is-open{transform:translateX(0);}
  .app-main{margin-left:0;}
  .mobile-topbar{display:flex;}
  .page{padding:24px 0 56px;}
  .container-x{padding:0 20px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:575.98px){
  .footer-grid{grid-template-columns:1fr;}
  .footer-col p{max-width:none;}
  .article-cover{border-radius:14px;margin-bottom:28px;}
  .article-body h2{font-size:19px;margin-top:32px;}
  .article-body{font-size:15.5px;}
  .breadcrumb li[aria-current]{max-width:180px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
}

/* roulang page: category1 */
:root{
  --brand:#14639B;
  --brand-700:#0F4F7C;
  --brand-050:#EAF2F9;
  --brand-200:#BBD5E8;
  --accent:#F07A2E;
  --ok:#12A594;
  --warn:#E0A32B;
  --danger:#D6564B;
  --ink:#16283A;
  --ink-2:#4A6076;
  --ink-3:#7B8FA3;
  --bg:#F6F9FC;
  --surface:#FFFFFF;
  --surface-2:#EFF5FA;
  --line:#E3EAF2;
  --r-card:14px;
  --r-img:12px;
  --r-lg:20px;
  --r-btn:12px;
  --r-input:10px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(19,42,58,.06),0 6px 16px rgba(19,42,58,.06);
  --shadow-2:0 12px 28px rgba(19,42,58,.10);
  --sidebar-w:232px;
  --bs-primary:#14639B;
  --bs-primary-rgb:20,99,155;
  --bs-body-color:#16283A;
  --bs-body-bg:#F6F9FC;
  --bs-border-color:#E3EAF2;
  --bs-border-radius:14px;
  --bs-link-color:#14639B;
  --bs-link-hover-color:#0F4F7C;
  --bs-font-sans-serif:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;}
a:hover{color:var(--brand-700);}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul,ol{padding-left:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}

/* ============ 布局骨架 ============ */
.app-sidebar{
  position:fixed;top:0;left:0;width:var(--sidebar-w);height:100vh;
  background:var(--surface);border-right:1px solid var(--line);
  display:flex;flex-direction:column;z-index:1040;
}
.sidebar-logo{
  height:72px;display:flex;align-items:center;padding:0 20px;
  border-bottom:1px solid var(--line);flex:0 0 auto;
}
.brand{display:flex;align-items:center;gap:10px;}
.brand-mark{
  width:20px;height:20px;flex:0 0 20px;border-radius:6px;
  background:linear-gradient(135deg,var(--brand) 0%,var(--brand-700) 100%);
  position:relative;overflow:hidden;
}
.brand-mark::after{
  content:"";position:absolute;right:-6px;bottom:-6px;width:14px;height:14px;
  border-radius:4px;background:var(--accent);opacity:.85;
}
.brand-text{
  font-weight:800;font-size:16px;letter-spacing:-.01em;color:var(--ink);line-height:1.25;
}
.sidebar-nav{padding:16px 12px;display:flex;flex-direction:column;gap:4px;overflow-y:auto;flex:1 1 auto;}
.nav-item{
  display:flex;align-items:center;gap:12px;height:48px;padding:0 14px;border-radius:10px;
  color:var(--ink-2);font-size:14.5px;font-weight:500;position:relative;
  transition:background .2s ease,color .2s ease;
}
.nav-item i{width:18px;font-size:15px;text-align:center;color:var(--ink-3);transition:color .2s ease;}
.nav-item:hover{background:var(--surface-2);color:var(--ink);}
.nav-item:hover i{color:var(--brand);}
.nav-item.active{background:var(--brand-050);color:var(--brand);font-weight:600;}
.nav-item.active i{color:var(--brand);}
.nav-item.active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;border-radius:0 3px 3px 0;background:var(--brand);
}
.sidebar-foot{padding:16px 16px 20px;border-top:1px solid var(--line);flex:0 0 auto;}
.sidebar-cta{
  display:flex;align-items:center;justify-content:center;height:44px;width:100%;
  background:var(--brand);color:#fff;border-radius:var(--r-btn);font-size:14.5px;font-weight:600;
  transition:background .2s ease,transform .2s ease,box-shadow .2s ease;
}
.sidebar-cta:hover{background:var(--brand-700);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.sidebar-copy{margin-top:12px;font-size:12px;color:var(--ink-3);line-height:1.7;}
.sidebar-mask{
  position:fixed;inset:0;background:rgba(19,42,58,.42);opacity:0;visibility:hidden;
  transition:opacity .22s ease,visibility .22s ease;z-index:1035;
}
.mobile-topbar{
  display:none;position:sticky;top:0;z-index:1030;height:56px;
  background:var(--surface);border-bottom:1px solid var(--line);
  align-items:center;justify-content:space-between;padding:0 12px;gap:8px;
}
.mobile-topbar.scrolled{box-shadow:var(--shadow-1);}
.hamburger{
  width:44px;height:44px;border:0;background:transparent;display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:5px;cursor:pointer;border-radius:10px;
}
.hamburger span{display:block;width:20px;height:2px;background:var(--ink);border-radius:2px;}
.mobile-brand{font-weight:800;font-size:15px;color:var(--ink);letter-spacing:-.01em;}
.mobile-cta{
  height:36px;padding:0 14px;display:inline-flex;align-items:center;border-radius:10px;
  background:var(--brand);color:#fff;font-size:13px;font-weight:600;
}
.mobile-cta:hover{color:#fff;background:var(--brand-700);}

.page-main{margin-left:var(--sidebar-w);min-height:100vh;}
.container-x{max-width:1120px;margin:0 auto;padding:0 40px;}
.section{padding:56px 0;}
.section-head{margin-bottom:28px;}
.section-head h2{
  font-size:clamp(22px,2.4vw,30px);line-height:1.35;font-weight:700;letter-spacing:-.01em;
}
.section-head p{margin-top:10px;color:var(--ink-2);font-size:15px;max-width:760px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:600;
  color:var(--brand);background:var(--brand-050);border-radius:var(--r-pill);
  padding:4px 12px;margin-bottom:14px;letter-spacing:.02em;
}

/* ============ 面包屑 ============ */
.breadcrumb-x{padding:20px 0 0;}
.breadcrumb-x ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-3);}
.breadcrumb-x li{display:flex;align-items:center;gap:8px;}
.breadcrumb-x li::after{content:"/";color:var(--brand-200);}
.breadcrumb-x li:last-child::after{display:none;}
.breadcrumb-x a{color:var(--ink-2);}
.breadcrumb-x a:hover{color:var(--brand);}
.breadcrumb-x .current{color:var(--ink);font-weight:600;}

/* ============ 页头横幅 ============ */
.page-banner{
  position:relative;margin-top:20px;border-radius:var(--r-lg);overflow:hidden;
  min-height:250px;display:flex;align-items:center;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
}
.page-banner::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(246,249,252,.96) 0%,rgba(246,249,252,.90) 46%,rgba(246,249,252,.55) 100%);
}
.page-banner-inner{position:relative;z-index:1;padding:40px 44px;max-width:660px;}
.page-banner h1{
  font-size:clamp(28px,4vw,44px);line-height:1.25;font-weight:800;letter-spacing:-.01em;
}
.page-banner p{margin-top:14px;color:var(--ink-2);font-size:16px;max-width:52ch;}
.banner-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px;}
.tag-pill{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:var(--r-pill);
  background:var(--surface);border:1px solid var(--brand-200);color:var(--brand);font-size:12px;font-weight:600;
}

/* ============ 要点条 ============ */
.keypoints{
  display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:-26px;position:relative;z-index:2;
}
.kp-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px 24px;box-shadow:var(--shadow-1);display:flex;gap:14px;align-items:flex-start;
}
.kp-icon{
  width:40px;height:40px;flex:0 0 40px;border-radius:11px;background:var(--brand-050);
  color:var(--brand);display:flex;align-items:center;justify-content:center;font-size:16px;
}
.kp-card h3{font-size:15.5px;font-weight:600;line-height:1.5;}
.kp-card p{font-size:13.5px;color:var(--ink-2);margin-top:6px;line-height:1.7;}

/* ============ 筛选 + 卡片网格 ============ */
.filter-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:24px;}
.chip{
  height:36px;padding:0 16px;border-radius:var(--r-pill);border:1px solid var(--line);
  background:var(--surface);color:var(--ink-2);font-size:13.5px;font-weight:500;cursor:pointer;
  transition:all .2s ease;
}
.chip:hover{border-color:var(--brand-200);color:var(--brand);}
.chip.is-active{background:var(--brand);border-color:var(--brand);color:#fff;font-weight:600;}
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.g-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:16px;box-shadow:var(--shadow-1);display:flex;flex-direction:column;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.g-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--brand-200);}
.thumb{
  position:relative;aspect-ratio:16/9;border-radius:var(--r-img);overflow:hidden;
  background:var(--brand-050);display:flex;align-items:center;justify-content:center;
}
.thumb i{position:absolute;font-size:26px;color:var(--brand-200);}
.thumb img{position:relative;width:100%;height:100%;object-fit:cover;}
.g-card .badge-x{margin-top:14px;}
.badge-x{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-pill);
  background:var(--brand-050);color:var(--brand);font-size:12px;font-weight:600;width:max-content;
}
.g-card h3{font-size:17px;font-weight:600;line-height:1.5;margin-top:10px;}
.g-card p{
  font-size:14px;color:var(--ink-2);line-height:1.7;margin-top:8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-link{
  margin-top:16px;padding-top:14px;border-top:1px solid var(--line);
  font-size:13.5px;font-weight:600;color:var(--brand);display:inline-flex;align-items:center;gap:6px;
}
.card-link i{font-size:11px;transition:transform .2s ease;}
.g-card:hover .card-link i{transform:translateX(3px);}

/* ============ 流程 ============ */
.flow-wrap{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:40px;box-shadow:var(--shadow-1);}
.step-row{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative;margin-top:28px;}
.step-row::before{
  content:"";position:absolute;left:6%;right:6%;top:22px;border-top:1px dashed var(--brand-200);z-index:0;
}
.step{position:relative;z-index:1;display:flex;flex-direction:column;gap:12px;}
.step-num{
  width:44px;height:44px;border-radius:50%;border:1.5px solid var(--brand);color:var(--brand);
  background:var(--surface);display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:800;
}
.step:nth-child(2) .step-num{border-color:var(--accent);color:var(--accent);}
.step h3{font-size:16px;font-weight:600;}
.step p{font-size:13.5px;color:var(--ink-2);line-height:1.7;}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:12px;}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;position:relative;box-shadow:var(--shadow-1);
}
.faq-item summary{
  list-style:none;cursor:pointer;padding:18px 52px 18px 24px;font-size:16px;font-weight:600;
  position:relative;line-height:1.6;transition:color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"";position:absolute;right:24px;top:50%;width:14px;height:2px;
  background:var(--brand);transform:translateY(-50%);border-radius:2px;
}
.faq-item summary::before{
  content:"";position:absolute;right:30px;top:50%;width:2px;height:14px;
  background:var(--brand);transform:translateY(-50%);border-radius:2px;transition:opacity .2s ease;
}
.faq-item[open] summary::before{opacity:0;}
.faq-item[open] summary{color:var(--brand);}
.faq-item[open]::after{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;border-radius:0 3px 3px 0;background:var(--brand);
}
.faq-body{padding:0 24px 20px 24px;font-size:14.5px;color:var(--ink-2);line-height:1.8;border-top:1px solid var(--line);padding-top:16px;}
.faq-body ul{margin-top:10px;display:flex;flex-direction:column;gap:8px;}
.faq-body li{padding-left:18px;position:relative;}
.faq-body li::before{
  content:"";position:absolute;left:0;top:10px;width:6px;height:6px;border-radius:2px;background:var(--brand-200);
}

/* ============ CTA ============ */
.cta-band{
  background:var(--brand-050);border-radius:var(--r-lg);padding:36px 40px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;
}
.cta-band h2{font-size:clamp(20px,2.2vw,26px);font-weight:700;line-height:1.4;}
.cta-band p{margin-top:10px;color:var(--ink-2);font-size:14.5px;max-width:52ch;}
.btn-x{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 26px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
  transition:background .2s ease,transform .2s ease,box-shadow .2s ease,color .2s ease;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
}
.btn-x.btn-lg-x{height:48px;padding:0 30px;}
.btn-primary-x{background:var(--brand);color:#fff;}
.btn-primary-x:hover{background:var(--brand-700);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-primary-x:active{transform:translateY(0);box-shadow:none;}
.btn-outline-x{background:transparent;border-color:var(--brand);color:var(--brand);}
.btn-outline-x:hover{background:var(--brand-050);color:var(--brand-700);transform:translateY(-1px);}
.btn-ghost-x{background:rgba(255,255,255,.92);color:var(--brand);}
.btn-ghost-x:hover{background:#fff;color:var(--brand-700);transform:translateY(-1px);box-shadow:var(--shadow-2);}

/* ============ 相关分类 ============ */
.related{margin-top:8px;padding-top:28px;border-top:1px solid var(--line);}
.related h2{font-size:18px;font-weight:600;margin-bottom:16px;}
.related-links{display:flex;flex-wrap:wrap;gap:12px;}
.related-links a{
  display:inline-flex;align-items:center;gap:8px;height:44px;padding:0 20px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-btn);
  font-size:14px;font-weight:600;color:var(--ink-2);transition:all .2s ease;
}
.related-links a:hover{border-color:var(--brand-200);color:var(--brand);box-shadow:var(--shadow-1);transform:translateY(-1px);}

/* ============ 页脚 ============ */
.site-footer{background:var(--surface-2);border-top:1px solid var(--line);margin-top:56px;padding:48px 0 24px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-col p{font-size:13.5px;color:var(--ink-2);line-height:1.8;max-width:340px;}
.footer-col h4{font-size:14px;font-weight:700;margin-bottom:14px;color:var(--ink);}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col li{font-size:13.5px;color:var(--ink-2);}
.footer-col a{font-size:13.5px;color:var(--ink-2);transition:color .18s ease;}
.footer-col a:hover{color:var(--brand);}
.footer-bottom{
  margin-top:36px;padding-top:18px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12px;color:var(--ink-3);
}

/* ============ 响应式 ============ */
@media (min-width:1200px){
  .container-x{max-width:1200px;padding:0 56px;}
}
@media (max-width:991px){
  .app-sidebar{
    transform:translateX(-100%);transition:transform .24s ease;width:84vw;max-width:320px;
    box-shadow:var(--shadow-2);
  }
  .app-sidebar.open{transform:translateX(0);}
  .sidebar-mask.show{opacity:1;visibility:visible;}
  .mobile-topbar{display:flex;}
  .page-main{margin-left:0;}
  .container-x{padding:0 24px;}
  .section{padding:48px 0;}
  .keypoints{grid-template-columns:1fr;margin-top:24px;}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .step-row{grid-template-columns:repeat(2,1fr);}
  .step-row::before{display:none;}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:28px;}
  .cta-band{flex-direction:column;align-items:flex-start;}
}
@media (max-width:767px){
  .section{padding:40px 0;}
  .container-x{padding:0 18px;}
  .page-banner{min-height:0;border-radius:16px;}
  .page-banner-inner{padding:30px 24px;}
  .card-grid{grid-template-columns:1fr;}
  .flow-wrap{padding:26px 20px;}
  .step-row{grid-template-columns:1fr;gap:20px;}
  .step{flex-direction:row;align-items:flex-start;gap:16px;}
  .cta-band{padding:26px 22px;}
  .cta-band .btn-x{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .g-card{padding:14px;}
}
@media (max-width:575px){
  .page-banner h1{font-size:26px;}
  .section-head h2{font-size:21px;}
  .kp-card{padding:18px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
}

/* roulang page: category2 */
:root{
  --bs-primary:#14639B;
  --bs-primary-rgb:20,99,155;
  --bs-body-color:#16283A;
  --bs-body-bg:#F6F9FC;
  --bs-border-color:#E3EAF2;
  --bs-border-radius:14px;
  --bs-link-color:#14639B;
  --bs-link-color-rgb:20,99,155;
  --bs-link-hover-color:#0F4F7C;
  --brand:#14639B;
  --brand-700:#0F4F7C;
  --brand-050:#EAF2F9;
  --brand-200:#BBD5E8;
  --accent:#F07A2E;
  --ok:#12A594;
  --warn:#E0A32B;
  --danger:#D6564B;
  --ink:#16283A;
  --ink-2:#4A6076;
  --ink-3:#7B8FA3;
  --bg:#F6F9FC;
  --surface:#FFFFFF;
  --surface-2:#EFF5FA;
  --line:#E3EAF2;
  --r-card:14px;
  --r-img:12px;
  --r-lg:20px;
  --r-btn:12px;
  --r-input:10px;
  --shadow-1:0 1px 2px rgba(19,42,58,.06),0 6px 16px rgba(19,42,58,.06);
  --shadow-2:0 12px 28px rgba(19,42,58,.10);
  --sidebar-w:232px;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-700);}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--ink);}
p{margin:0 0 14px;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}

/* ---------- 侧边导航 ---------- */
.app-sidebar{
  position:fixed;top:0;left:0;width:var(--sidebar-w);height:100vh;
  background:#fff;border-right:1px solid var(--line);
  display:flex;flex-direction:column;z-index:1040;
}
.sidebar-brand{
  height:72px;flex:0 0 auto;display:flex;align-items:center;gap:10px;
  padding:0 20px;border-bottom:1px solid var(--line);
}
.brand-mark{
  width:20px;height:20px;border-radius:6px;flex:0 0 auto;position:relative;
  background:linear-gradient(135deg,var(--brand),#3E8FC4);
}
.brand-mark::after{
  content:"";position:absolute;right:-4px;top:-4px;width:9px;height:9px;
  border-radius:50%;background:var(--accent);opacity:.85;
}
.brand-text{font-size:15.5px;font-weight:800;letter-spacing:-.01em;color:var(--ink);line-height:1.2;}
.sidebar-nav{
  flex:1 1 auto;overflow-y:auto;padding:16px 12px;
  display:flex;flex-direction:column;gap:4px;
}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;
  min-height:48px;padding:0 12px;border-radius:10px;
  color:var(--ink-2);font-size:14.5px;line-height:1.35;
  transition:background .2s ease,color .2s ease;
}
.nav-item i{width:20px;font-size:18px;text-align:center;color:var(--ink-3);transition:color .2s ease;}
.nav-item span{flex:1 1 auto;}
.nav-item:hover{background:var(--surface-2);color:var(--ink);}
.nav-item:hover i{color:var(--brand);}
.nav-item.active{background:var(--brand-050);color:var(--brand);font-weight:600;}
.nav-item.active i{color:var(--brand);}
.nav-item.active::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:24px;border-radius:2px;background:var(--brand);
}
.sidebar-foot{flex:0 0 auto;padding:16px 16px 20px;border-top:1px solid var(--line);}
.sidebar-foot .sidebar-note{
  margin:14px 0 0;font-size:12px;line-height:1.6;color:var(--ink-3);
}
.sidebar-foot .sidebar-note span{display:block;}

/* ---------- 按钮 ---------- */
.btn-brand,.btn-outline-brand,.btn-ghost-brand{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn-brand{background:var(--brand);border:1px solid var(--brand);color:#fff;}
.btn-brand:hover{background:var(--brand-700);border-color:var(--brand-700);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-brand:active{transform:translateY(0);box-shadow:none;}
.btn-outline-brand{background:#fff;border:1px solid var(--brand);color:var(--brand);}
.btn-outline-brand:hover{background:var(--brand-050);color:var(--brand-700);transform:translateY(-1px);}
.btn-outline-brand:active{transform:translateY(0);}
.btn-ghost-brand{background:rgba(255,255,255,.86);border:1px solid rgba(20,99,155,.35);color:var(--brand);}
.btn-ghost-brand:hover{background:#fff;color:var(--brand-700);}
.btn-lg-x{height:48px;padding:0 28px;font-size:16px;}
.w-100{width:100%;}

/* ---------- 移动顶栏 ---------- */
.mobile-topbar{
  display:none;position:sticky;top:0;z-index:1030;
  height:56px;align-items:center;gap:12px;padding:0 14px;
  background:#fff;border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease;
}
.mobile-topbar.scrolled{box-shadow:var(--shadow-1);}
.hamburger{
  width:44px;height:44px;flex:0 0 auto;border:0;background:transparent;
  display:flex;flex-direction:column;justify-content:center;align-items:center;gap:4px;cursor:pointer;border-radius:10px;
}
.hamburger span{display:block;width:20px;height:2px;border-radius:2px;background:var(--ink);}
.hamburger:hover{background:var(--surface-2);}
.mobile-brand{
  flex:1 1 auto;text-align:center;font-size:15px;font-weight:800;letter-spacing:-.01em;
  color:var(--ink);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.mobile-cta{
  flex:0 0 auto;height:36px;padding:0 14px;border-radius:10px;
  background:var(--brand);color:#fff;font-size:13.5px;font-weight:600;
  display:inline-flex;align-items:center;
}
.mobile-cta:hover{background:var(--brand-700);color:#fff;}
.sidebar-mask{
  position:fixed;inset:0;background:rgba(19,42,58,.42);
  opacity:0;visibility:hidden;transition:opacity .22s ease,visibility .22s ease;z-index:1035;
}
.sidebar-mask.show{opacity:1;visibility:visible;}

/* ---------- 页面骨架 ---------- */
.page-shell{margin-left:var(--sidebar-w);display:flex;flex-direction:column;min-height:100vh;}
.app-main{flex:1 1 auto;padding:32px 0 0;}
.container-x{width:100%;max-width:1120px;margin:0 auto;padding:0 40px;}

/* ---------- 面包屑 ---------- */
.breadcrumb-x{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--ink-3);margin-bottom:20px;padding:0;list-style:none;
}
.breadcrumb-x li{display:flex;align-items:center;gap:8px;}
.breadcrumb-x li+li::before{content:"/";color:var(--brand-200);}
.breadcrumb-x a{color:var(--ink-2);}
.breadcrumb-x a:hover{color:var(--brand);}
.breadcrumb-x .current{color:var(--ink);font-weight:600;}

/* ---------- 页头横幅 ---------- */
.page-banner{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  min-height:268px;display:flex;align-items:center;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  box-shadow:var(--shadow-1);
}
.page-banner::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(246,249,252,.96) 0%,rgba(246,249,252,.86) 46%,rgba(246,249,252,.58) 100%);
}
.banner-inner{position:relative;padding:40px;max-width:720px;}
.badge-x{
  display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 12px;
  border-radius:999px;background:var(--brand-050);color:var(--brand);
  font-size:12px;font-weight:600;letter-spacing:.01em;
}
.badge-x.accent{background:rgba(240,122,46,.12);color:#C25E1B;}
.page-banner h1{
  font-size:clamp(28px,4vw,42px);line-height:1.25;font-weight:800;
  letter-spacing:-.01em;margin:16px 0 14px;
}
.banner-sub{
  font-size:16.5px;line-height:1.8;color:var(--ink-2);max-width:46ch;margin:0 0 24px;
}
.banner-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- 通用区块 ---------- */
.section{margin-top:88px;}
.section-head{margin-bottom:32px;}
.section-head h2{font-size:clamp(22px,2.4vw,30px);line-height:1.35;font-weight:700;margin-bottom:10px;}
.section-head p{color:var(--ink-2);max-width:760px;margin:0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;margin-bottom:14px;
  height:26px;padding:0 12px;border-radius:999px;background:var(--brand-050);
  color:var(--brand);font-size:12.5px;font-weight:600;
}
.eyebrow i{font-size:12px;}

/* ---------- 说明双栏 ---------- */
.intro-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:32px;align-items:start;}
.intro-text p{color:var(--ink-2);max-width:760px;}
.intro-text p:last-child{margin-bottom:0;}
.mini-list{display:grid;gap:12px;}
.mini-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:20px;box-shadow:var(--shadow-1);
}
.mini-item h3{font-size:16px;font-weight:600;margin-bottom:6px;display:flex;align-items:center;gap:10px;}
.mini-item h3 i{color:var(--brand);font-size:15px;}
.mini-item p{margin:0;font-size:14px;color:var(--ink-2);line-height:1.7;}

/* ---------- 数据条 ---------- */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.stat-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--shadow-1);transition:box-shadow .2s ease,transform .2s ease;
}
.stat-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);}
.stat-card .num{
  font-size:28px;font-weight:800;color:var(--brand);line-height:1.2;
  font-variant-numeric:tabular-nums;
}
.stat-card .num small{font-size:14px;font-weight:600;color:var(--ink-3);margin-left:4px;}
.stat-card .lbl{font-size:13px;color:var(--ink-3);margin-top:6px;line-height:1.6;}

/* ---------- 列表型条目 ---------- */
.row-list{border-top:1px solid var(--line);}
.row-item{
  display:flex;gap:24px;align-items:stretch;
  padding:24px 0;border-bottom:1px solid var(--line);min-height:168px;
}
.row-thumb{
  flex:0 0 240px;width:240px;height:168px;border-radius:var(--r-img);overflow:hidden;
  background:var(--brand-050);display:block;
}
.row-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .24s ease;}
.row-item:hover .row-thumb img{transform:scale(1.03);}
.row-body{flex:1 1 auto;display:flex;flex-direction:column;gap:8px;min-width:0;}
.row-body h3{font-size:18px;line-height:1.5;font-weight:600;}
.row-body h3 a{color:var(--ink);}
.row-body h3 a:hover{color:var(--brand);}
.row-body .row-desc{
  font-size:14px;line-height:1.75;color:var(--ink-2);margin:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.row-meta{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  gap:16px;font-size:13px;color:var(--ink-3);
}
.row-meta .row-link{color:var(--brand);font-weight:600;}
.row-meta .row-link i{margin-left:6px;font-size:11px;transition:transform .2s ease;}
.row-item:hover .row-link i{transform:translateX(3px);}
.row-time{font-variant-numeric:tabular-nums;white-space:nowrap;}

/* ---------- 流程 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.step{
  position:relative;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);padding:24px;box-shadow:var(--shadow-1);
}
.step-no{
  width:32px;height:32px;border-radius:50%;border:1.5px solid var(--brand-200);
  color:var(--brand);font-size:13.5px;font-weight:700;display:flex;
  align-items:center;justify-content:center;margin-bottom:14px;
  font-variant-numeric:tabular-nums;
}
.step h3{font-size:16.5px;font-weight:600;margin-bottom:8px;}
.step p{margin:0;font-size:14px;line-height:1.75;color:var(--ink-2);}
@media (min-width:992px){
  .step:not(:last-child)::after{
    content:"";position:absolute;top:40px;right:-24px;width:24px;
    border-top:2px dashed var(--brand-200);
  }
}

/* ---------- 检查清单 ---------- */
.check-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;}
.check-item{
  display:flex;gap:14px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);padding:20px;box-shadow:var(--shadow-1);
  transition:box-shadow .2s ease,transform .2s ease;
}
.check-item:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);}
.check-mark{
  flex:0 0 auto;width:10px;height:10px;border-radius:3px;background:var(--brand);
  margin-top:8px;
}
.check-mark.ok{background:var(--ok);}
.check-mark.warn{background:var(--warn);}
.check-item h3{font-size:16px;font-weight:600;margin-bottom:6px;}
.check-item p{margin:0;font-size:14px;line-height:1.75;color:var(--ink-2);}

/* ---------- FAQ ---------- */
.faq-x .accordion-item{
  border:1px solid var(--line);border-radius:var(--r-card);
  background:#fff;margin-bottom:12px;overflow:hidden;box-shadow:var(--shadow-1);
}
.faq-x .accordion-button{
  position:relative;width:100%;padding:18px 56px 18px 20px;
  font-size:16.5px;font-weight:600;line-height:1.6;color:var(--ink);
  background:#fff;box-shadow:none;border:0;
}
.faq-x .accordion-button:not(.collapsed){
  color:var(--brand);background:var(--brand-050);box-shadow:inset 3px 0 0 var(--brand);
}
.faq-x .accordion-button:focus{box-shadow:inset 3px 0 0 var(--brand);}
.faq-x .accordion-button::after{
  content:"+";position:absolute;right:20px;top:50%;transform:translateY(-50%);
  width:auto;height:auto;margin:0;background:none;background-image:none;
  font-size:22px;font-weight:400;line-height:1;color:var(--brand);
}
.faq-x .accordion-button:not(.collapsed)::after{content:"−";}
.faq-x .accordion-body{padding:4px 20px 20px;font-size:15px;line-height:1.85;color:var(--ink-2);}
.faq-x .accordion-body p:last-child{margin-bottom:0;}

/* ---------- CTA ---------- */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:28px;
  background:var(--brand-050);border:1px solid var(--brand-200);
  border-radius:var(--r-lg);padding:36px;
}
.cta-band h2{font-size:clamp(20px,2.2vw,26px);line-height:1.4;margin-bottom:8px;}
.cta-band p{margin:0;color:var(--ink-2);font-size:15px;max-width:56ch;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;flex:0 0 auto;}

/* ---------- 相关分类 ---------- */
.related-links{display:flex;flex-wrap:wrap;gap:12px;}
.related-links a{
  display:inline-flex;align-items:center;gap:8px;height:44px;padding:0 18px;
  border-radius:999px;background:#fff;border:1px solid var(--line);
  color:var(--ink-2);font-size:14px;font-weight:500;
  transition:border-color .2s ease,color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.related-links a:hover{border-color:var(--brand-200);color:var(--brand);box-shadow:var(--shadow-1);transform:translateY(-1px);}
.related-links a i{font-size:12px;color:var(--brand-200);}
.related-links a:hover i{color:var(--brand);}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:88px;background:#fff;border-top:1px solid var(--line);
  padding:56px 0 24px;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand .brand-text{font-size:16px;}
.footer-col p{font-size:14px;line-height:1.8;color:var(--ink-2);margin:0;max-width:340px;}
.footer-col h4{font-size:14.5px;font-weight:700;margin-bottom:14px;color:var(--ink);}
.footer-col ul{display:grid;gap:10px;}
.footer-col li{font-size:14px;color:var(--ink-2);line-height:1.7;}
.footer-col ul a{color:var(--ink-2);}
.footer-col ul a:hover{color:var(--brand);}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:10px;font-size:12px;color:var(--ink-3);
}

/* ---------- 响应式 ---------- */
@media (min-width:1200px){
  .container-x{max-width:1200px;padding:0 56px;}
}
@media (max-width:1199.98px){
  .stat-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:991.98px){
  .app-sidebar{
    transform:translateX(-100%);width:84vw;max-width:320px;
    transition:transform .24s ease;box-shadow:var(--shadow-2);
  }
  .app-sidebar.open{transform:translateX(0);}
  .mobile-topbar{display:flex;}
  .page-shell{margin-left:0;}
  .app-main{padding-top:24px;}
  .steps{grid-template-columns:repeat(2,1fr);gap:20px;}
  .step:not(:last-child)::after{display:none;}
  .intro-grid{grid-template-columns:1fr;gap:24px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:767.98px){
  .container-x{padding:0 20px;}
  .section{margin-top:56px;}
  .page-banner{min-height:224px;border-radius:16px;}
  .banner-inner{padding:28px 24px;}
  .banner-sub{font-size:15.5px;}
  .stat-grid{grid-template-columns:1fr;gap:16px;}
  .steps{grid-template-columns:1fr;}
  .check-grid{grid-template-columns:1fr;}
  .row-item{flex-direction:column;gap:16px;min-height:0;}
  .row-thumb{flex:0 0 auto;width:100%;height:auto;aspect-ratio:16/9;}
  .row-meta{flex-direction:row;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:28px 24px;}
  .cta-actions{width:100%;}
  .cta-actions .btn-brand,.cta-actions .btn-outline-brand{flex:1 1 auto;}
  .site-footer{padding-top:40px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:519.98px){
  body{font-size:15.5px;}
  .stat-card .num{font-size:25px;}
  .row-body h3{font-size:17px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
}

/* roulang page: category3 */
:root{
  --brand:#14639B;
  --brand-700:#0F4F7C;
  --brand-050:#EAF2F9;
  --brand-200:#BBD5E8;
  --accent:#F07A2E;
  --ok:#12A594;
  --warn:#E0A32B;
  --danger:#D6564B;
  --ink:#16283A;
  --ink-2:#4A6076;
  --ink-3:#7B8FA3;
  --bg:#F6F9FC;
  --surface:#FFFFFF;
  --surface-2:#EFF5FA;
  --line:#E3EAF2;
  --r-card:14px;
  --r-img:12px;
  --r-lg:20px;
  --r-btn:12px;
  --r-input:10px;
  --shadow-1:0 1px 2px rgba(19,42,58,.06), 0 6px 16px rgba(19,42,58,.06);
  --shadow-2:0 12px 28px rgba(19,42,58,.10);
  --sidebar-w:232px;

  --bs-primary:#14639B;
  --bs-primary-rgb:20,99,155;
  --bs-body-color:#16283A;
  --bs-body-bg:#F6F9FC;
  --bs-border-color:#E3EAF2;
  --bs-border-radius:14px;
  --bs-link-color:#14639B;
  --bs-link-hover-color:#0F4F7C;
  --bs-font-sans-serif:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--ink);letter-spacing:-.01em;}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .2s;}
a:hover{color:var(--brand-700);}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}

/* ---------- 布局骨架 ---------- */
.container-x{width:100%;max-width:1120px;margin:0 auto;padding:0 20px;}
@media (min-width:992px){.container-x{padding:0 40px;}}
@media (min-width:1200px){.container-x{max-width:1200px;padding:0 56px;}}

.app-main{margin-left:0;min-height:100vh;display:flex;flex-direction:column;}

/* ---------- 侧栏导航 ---------- */
.app-sidebar{
  position:fixed;left:0;top:0;bottom:0;width:var(--sidebar-w);
  background:var(--surface);border-right:1px solid var(--line);
  display:flex;flex-direction:column;z-index:1040;
}
.sidebar-head{
  height:72px;flex:0 0 72px;display:flex;align-items:center;
  padding:0 20px;border-bottom:1px solid var(--line);
}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:-.01em;color:var(--ink);font-size:15px;line-height:1.25;}
.brand:hover{color:var(--brand-700);}
.brand-mark{
  position:relative;flex:0 0 18px;width:18px;height:18px;border-radius:5px;
  background:linear-gradient(135deg,var(--brand) 0%,var(--brand-700) 70%);
}
.brand-mark::after{
  content:"";position:absolute;right:-4px;top:-4px;width:8px;height:8px;
  border-radius:50%;background:var(--accent);opacity:.85;
}
.brand-text{display:block;}

.sidebar-nav{flex:1 1 auto;overflow-y:auto;padding:16px 12px;display:flex;flex-direction:column;gap:4px;}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;height:48px;
  padding:0 14px;border-radius:10px;color:var(--ink-2);
  font-size:14.5px;font-weight:500;transition:background-color .2s,color .2s;
}
.nav-item i{width:18px;text-align:center;font-size:16px;color:var(--ink-3);transition:color .2s;}
.nav-item:hover{background:var(--surface-2);color:var(--ink);}
.nav-item:hover i{color:var(--brand);}
.nav-item.active{background:#E7F0F8;color:var(--brand-700);font-weight:600;}
.nav-item.active i{color:var(--brand);}
.nav-item.active::before{
  content:"";position:absolute;left:-12px;top:9px;bottom:9px;width:3px;
  border-radius:0 3px 3px 0;background:var(--brand);
}

.sidebar-foot{flex:0 0 auto;padding:16px;border-top:1px solid var(--line);}
.sidebar-copy{margin-top:14px;font-size:12px;line-height:1.6;color:var(--ink-3);}

.btn-x{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 26px;border-radius:var(--r-btn);
  border:1px solid transparent;font-size:15px;font-weight:600;
  cursor:pointer;white-space:nowrap;
  transition:transform .2s,box-shadow .2s,background-color .2s,color .2s,border-color .2s;
}
.btn-x.lg{height:48px;padding:0 30px;font-size:16px;}
.btn-x.w-100{width:100%;}
.btn-primary-x{background:var(--brand);color:#fff;box-shadow:var(--shadow-1);}
.btn-primary-x:hover,.btn-primary-x:focus{background:var(--brand-700);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-primary-x:active{transform:translateY(0);box-shadow:var(--shadow-1);}
.btn-outline-x{background:#fff;color:var(--brand);border-color:var(--brand-200);}
.btn-outline-x:hover,.btn-outline-x:focus{background:var(--brand-050);color:var(--brand-700);border-color:var(--brand-200);transform:translateY(-1px);}
.btn-outline-x:active{transform:translateY(0);}

/* ---------- 移动端顶栏 ---------- */
.mobile-topbar{
  display:none;position:sticky;top:0;z-index:1030;
  height:56px;align-items:center;gap:8px;padding:0 12px;
  background:#fff;border-bottom:1px solid var(--line);
  transition:box-shadow .2s;
}
.mobile-topbar.scrolled{box-shadow:var(--shadow-1);}
.hamburger{
  width:44px;height:44px;flex:0 0 44px;display:flex;flex-direction:column;
  justify-content:center;gap:5px;padding:0 10px;background:transparent;border:0;cursor:pointer;
}
.hamburger span{display:block;height:2px;border-radius:2px;background:var(--ink);transition:transform .2s,opacity .2s;}
.mobile-brand{
  flex:1 1 auto;min-width:0;font-size:15px;font-weight:700;color:var(--ink);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.mobile-cta{
  flex:0 0 auto;height:40px;padding:0 16px;display:inline-flex;align-items:center;
  border-radius:10px;background:var(--brand);color:#fff;font-size:13.5px;font-weight:600;
}
.mobile-cta:hover{background:var(--brand-700);color:#fff;}

.sidebar-mask{
  position:fixed;inset:0;background:rgba(19,42,58,.42);
  opacity:0;pointer-events:none;transition:opacity .24s;z-index:1035;
}
.sidebar-mask.show{opacity:1;pointer-events:auto;}
body.no-scroll{overflow:hidden;}

@media (max-width:991.98px){
  .mobile-topbar{display:flex;}
  .app-sidebar{
    left:auto;right:0;width:84vw;max-width:320px;border-right:0;
    border-left:1px solid var(--line);box-shadow:var(--shadow-2);
    transform:translateX(100%);transition:transform .24s ease;
  }
  .app-sidebar.open{transform:translateX(0);}
  .app-main{margin-left:0;}
  .sidebar-nav{padding:12px;}
  .nav-item{height:48px;font-size:15px;}
  .nav-item.active::before{left:-12px;}
}
@media (min-width:992px){
  .app-main{margin-left:var(--sidebar-w);}
  .sidebar-mask{display:none;}
}

/* ---------- 通用板块 ---------- */
.section{padding:48px 0;}
.section-lg{padding:64px 0;}
@media (max-width:767.98px){
  .section{padding:36px 0;}
  .section-lg{padding:44px 0;}
}
.section-head{margin-bottom:28px;max-width:820px;}
.section-head h2{font-size:clamp(22px,2.4vw,30px);font-weight:700;line-height:1.35;}
.section-head p{margin-top:12px;font-size:15px;color:var(--ink-2);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;margin-bottom:12px;
  font-size:13px;font-weight:600;color:var(--brand);letter-spacing:.02em;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);}

/* ---------- 面包屑 ---------- */
.crumb-bar{padding:24px 0 0;}
.breadcrumb-x{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-3);}
.breadcrumb-x li{display:flex;align-items:center;gap:8px;}
.breadcrumb-x li+li::before{content:"/";color:var(--brand-200);}
.breadcrumb-x a{color:var(--ink-3);}
.breadcrumb-x a:hover{color:var(--brand);}

/* ---------- 页头横幅 ---------- */
.page-banner{padding:20px 0 8px;}
.banner-card{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  min-height:238px;display:flex;flex-direction:column;justify-content:center;
  padding:40px;border:1px solid var(--line);
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center right;
}
.banner-card::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(96deg,rgba(246,249,252,.96) 0%,rgba(246,249,252,.86) 52%,rgba(246,249,252,.34) 100%);
}
.banner-card > *{position:relative;z-index:1;}
.banner-card h1{font-size:clamp(26px,3.6vw,40px);line-height:1.25;font-weight:800;max-width:720px;}
.banner-card p{margin-top:14px;font-size:16px;color:var(--ink-2);max-width:640px;}
.banner-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.chip{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:999px;background:#fff;border:1px solid var(--brand-200);
  color:var(--brand-700);font-size:12.5px;font-weight:500;
}
@media (max-width:767.98px){
  .banner-card{padding:26px 22px;min-height:210px;}
  .banner-card::before{background:linear-gradient(180deg,rgba(246,249,252,.95) 0%,rgba(246,249,252,.80) 100%);}
}

/* ---------- 对照栅格 ---------- */
.compare-grid{display:grid;grid-template-columns:40% 1fr;gap:40px;align-items:start;}
@media (max-width:991.98px){.compare-grid{grid-template-columns:1fr;gap:28px;}}

.aside-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:24px;box-shadow:var(--shadow-1);
}
@media (min-width:992px){.aside-card{position:sticky;top:24px;}}
.aside-card img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-img);margin-bottom:20px;}
.aside-card h3{font-size:19px;font-weight:700;margin-bottom:10px;}
.aside-card p{font-size:14.5px;color:var(--ink-2);}
.check-list{margin-top:18px;display:flex;flex-direction:column;gap:12px;}
.check-list li{position:relative;padding-left:20px;font-size:14.5px;color:var(--ink-2);}
.check-list li::before{
  content:"";position:absolute;left:0;top:.62em;width:8px;height:8px;
  border-radius:2px;background:var(--brand-200);
}

.point-list{display:flex;flex-direction:column;}
.point-item{display:grid;grid-template-columns:44px 1fr;gap:18px;padding:22px 0;border-bottom:1px solid var(--line);}
.point-item:first-child{padding-top:2px;}
.point-item:last-child{border-bottom:0;padding-bottom:0;}
.point-num{
  width:36px;height:36px;border-radius:50%;border:1.5px solid var(--brand-200);
  background:#fff;color:var(--brand);font-size:13.5px;font-weight:700;
  display:flex;align-items:center;justify-content:center;font-variant-numeric:tabular-nums;
}
.point-item h3{font-size:17px;font-weight:600;margin-bottom:6px;line-height:1.5;}
.point-item p{font-size:14.5px;color:var(--ink-2);}
.point-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px;}
.tag-x{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  border-radius:999px;background:var(--brand-050);color:var(--brand-700);
  font-size:12px;font-weight:500;
}

/* ---------- 对照表格 ---------- */
.table-wrap{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  overflow-x:auto;box-shadow:var(--shadow-1);
}
.compare-table{width:100%;min-width:640px;border-collapse:collapse;font-size:14.5px;}
.compare-table th{
  background:var(--brand-050);color:var(--brand-700);font-weight:600;
  text-align:left;padding:16px 20px;border-bottom:1px solid var(--line);
  font-size:14px;white-space:nowrap;
}
.compare-table td{
  padding:16px 20px;color:var(--ink-2);border-bottom:1px solid var(--line);vertical-align:top;
}
.compare-table tbody tr:nth-child(even){background:#FAFCFE;}
.compare-table tbody tr:last-child td{border-bottom:0;}
.table-note{margin-top:14px;font-size:13px;color:var(--ink-3);}

/* ---------- FAQ ---------- */
.faq{margin-top:8px;}
.faq .accordion-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  margin-bottom:12px;overflow:hidden;transition:box-shadow .2s;
}
.faq .accordion-item:hover{box-shadow:var(--shadow-1);}
.faq .accordion-header{margin:0;}
.faq .accordion-button{
  position:relative;display:flex;align-items:center;gap:16px;width:100%;
  background:#fff;color:var(--ink);font-size:16px;font-weight:600;line-height:1.6;
  padding:20px 24px;border:0;box-shadow:none;
}
.faq .accordion-button:not(.collapsed){color:var(--brand-700);background:var(--brand-050);}
.faq .accordion-button:not(.collapsed)::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--brand);
}
.faq .accordion-button:focus{box-shadow:none;outline:none;}
.faq .accordion-button:focus-visible{outline:2px solid var(--brand);outline-offset:-2px;}
.faq .accordion-button::after{display:none;}
.faq .accordion-button .q-text{flex:1 1 auto;}
.faq-sign{position:relative;flex:0 0 22px;width:22px;height:22px;}
.faq-sign::before,
.faq-sign::after{content:"";position:absolute;background:var(--brand);border-radius:2px;}
.faq-sign::before{left:3px;right:3px;top:10px;height:2px;}
.faq-sign::after{top:3px;bottom:3px;left:10px;width:2px;transition:transform .2s;}
.faq .accordion-button:not(.collapsed) .faq-sign::after{transform:scaleY(0);}
.faq .accordion-body{padding:2px 24px 22px;font-size:15px;line-height:1.85;color:var(--ink-2);}
@media (max-width:575.98px){
  .faq .accordion-button{padding:16px 18px;font-size:15.5px;}
  .faq .accordion-body{padding:2px 18px 18px;font-size:14.5px;}
}

/* ---------- 卡片 ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
@media (max-width:991.98px){.grid-3{grid-template-columns:repeat(2,1fr);}}
@media (max-width:639.98px){.grid-3{grid-template-columns:1fr;}}
.card-x{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--shadow-1);
  transition:transform .2s,box-shadow .2s;
}
.card-x:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}
.icon-box{
  width:44px;height:44px;border-radius:12px;background:var(--brand-050);
  color:var(--brand);display:flex;align-items:center;justify-content:center;
  font-size:18px;margin-bottom:16px;
}
.card-x h3{font-size:17px;font-weight:600;margin-bottom:10px;}
.card-x p{font-size:14.5px;color:var(--ink-2);}

/* ---------- CTA ---------- */
.cta-band{background:var(--brand-050);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:44px 0;}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;}
.cta-inner h2{font-size:clamp(20px,2.2vw,26px);font-weight:700;line-height:1.4;}
.cta-inner p{margin-top:10px;font-size:14.5px;color:var(--ink-2);max-width:640px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}
@media (max-width:767.98px){
  .cta-actions{width:100%;}
  .cta-actions .btn-x{flex:1 1 100%;}
}

/* ---------- 相关分类 ---------- */
.related-cats{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;
  padding:22px 0 0;font-size:14px;color:var(--ink-3);
}
.related-cats a{color:var(--brand);font-weight:500;}
.related-cats a:hover{color:var(--brand-700);}
.related-cats .sep{color:var(--brand-200);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--surface);border-top:1px solid var(--line);padding:56px 0 28px;margin-top:auto;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px;}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:800;margin-bottom:16px;color:var(--ink);}
.footer-col p{font-size:14px;line-height:1.8;color:var(--ink-2);max-width:340px;}
.footer-col h4{font-size:15px;font-weight:700;margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col ul li{font-size:14px;color:var(--ink-2);}
.footer-col ul a{font-size:14px;color:var(--ink-2);}
.footer-col ul a:hover{color:var(--brand);}
.footer-bottom{
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  margin-top:36px;padding-top:20px;border-top:1px solid var(--line);
  font-size:12px;color:var(--ink-3);
}
@media (max-width:991.98px){.footer-grid{grid-template-columns:1fr 1fr;}}
@media (max-width:599.98px){
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;}
}

@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
}