/* roulang page: index */
:root{
  --blue:#1B5FD9;
  --blue-dark:#0E3F9E;
  --blue-light:#E8F0FE;
  --orange:#FF7A18;
  --bg:#F5F8FC;
  --card:#FFFFFF;
  --border:#E3EAF4;
  --line:#EDF2F8;
  --text:#0F1B2D;
  --text-2:#4A5A73;
  --text-3:#8494AB;
  --up:#12A76B;
  --down:#E0483C;
  --r-card:16px;
  --r-btn:10px;
  --r-input:10px;
  --sh-card:0 1px 2px rgba(15,27,45,.04), 0 8px 24px rgba(15,27,45,.06);
  --sh-hover:0 2px 4px rgba(15,27,45,.06), 0 14px 32px rgba(15,27,45,.10);
  --sidebar-w:248px;
  --t:180ms ease-out;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  padding:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0;}
ul,ol{list-style:none;}
a{color:var(--blue);text-decoration:none;transition:color var(--t);}
a:hover{color:var(--blue-dark);}
img{max-width:100%;display:block;background:var(--blue-light);}
button{font-family:inherit;}
.num{font-variant-numeric:tabular-nums;font-weight:700;}

/* ---------- App shell ---------- */
.app-shell{position:relative;min-height:100vh;}

.sidebar{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--sidebar-w);
  background:#fff;
  border-right:1px solid var(--border);
  display:flex;
  flex-direction:column;
  padding:0 16px 20px;
  overflow-y:auto;
  overflow-x:hidden;
  z-index:60;
  transition:width 220ms ease-out, box-shadow 220ms ease-out;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  height:72px;
  padding:0 6px;
  flex:0 0 72px;
  text-decoration:none;
}
.brand-mark{
  width:36px;height:36px;flex:0 0 36px;
  border-radius:10px;
  background:linear-gradient(135deg,var(--blue),var(--blue-dark));
  color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:700;
}
.brand-text{display:flex;flex-direction:column;line-height:1.3;overflow:hidden;}
.brand-name{font-size:15px;font-weight:700;color:var(--text);white-space:nowrap;}
.brand-sub{font-size:11px;color:var(--text-3);white-space:nowrap;}

.side-nav{display:flex;flex-direction:column;gap:4px;margin-top:6px;}
.nav-item{
  position:relative;
  display:flex;align-items:center;gap:12px;
  height:44px;padding:0 12px;
  border-radius:10px;
  color:var(--text-2);
  font-size:15px;
  transition:background var(--t),color var(--t);
}
.nav-item i{width:20px;flex:0 0 20px;text-align:center;font-size:15px;}
.nav-item span{white-space:nowrap;}
.nav-item:hover{background:#F1F5FB;color:var(--text);}
.nav-item.is-active{background:var(--blue-light);color:var(--blue);font-weight:600;}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:20px;border-radius:0 3px 3px 0;background:var(--blue);
}
.nav-item:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(27,95,217,.20);}

.side-cta{
  margin-top:auto;
  background:var(--blue-light);
  border-radius:12px;
  padding:16px;
}
.side-cta p{font-size:13px;line-height:1.6;color:var(--blue-dark);margin-bottom:12px;}
.side-cta .btn{width:100%;height:38px;font-size:13px;padding:0 12px;}

.drawer-mask{
  position:fixed;inset:0;
  background:rgba(15,27,45,.45);
  opacity:0;visibility:hidden;
  transition:opacity 220ms ease-out,visibility 220ms ease-out;
  z-index:55;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}

.main-wrap{
  margin-left:var(--sidebar-w);
  min-width:0;
  display:flex;
  flex-direction:column;
  min-height:100vh;
}

.mobile-bar{
  display:none;
  height:56px;
  background:#fff;
  border-bottom:1px solid var(--border);
  position:sticky;top:0;
  z-index:50;
  align-items:center;
  gap:12px;
  padding:0 16px;
}
.hamburger{
  width:38px;height:38px;flex:0 0 38px;
  border:1px solid var(--border);
  background:#fff;color:var(--text);
  border-radius:10px;
  cursor:pointer;
  font-size:16px;
  display:flex;align-items:center;justify-content:center;
  transition:background var(--t),border-color var(--t);
}
.hamburger:hover{background:var(--blue-light);border-color:var(--blue);color:var(--blue);}
.mobile-brand{
  flex:1 1 auto;
  font-size:15px;font-weight:700;color:var(--text);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.btn-xs{height:34px;font-size:13px;padding:0 14px;}

/* ---------- Container & sections ---------- */
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 40px;}
.section{padding:76px 0;}
.section-tight{padding:56px 0;}

.section-head{max-width:800px;margin-bottom:32px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:700;letter-spacing:.04em;
  color:var(--blue);background:var(--blue-light);
  padding:4px 10px;border-radius:999px;
}
.section-head h2{font-size:28px;line-height:1.35;font-weight:700;margin:14px 0 10px;}
.section-head p{font-size:15px;color:var(--text-2);}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;
  border-radius:var(--r-btn);
  font-size:15px;font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:background var(--t),color var(--t),box-shadow var(--t),transform var(--t),border-color var(--t);
  white-space:nowrap;
}
.btn-accent{background:var(--orange);color:#fff;}
.btn-accent:hover{background:#EE6C0B;color:#fff;transform:translateY(-2px);box-shadow:0 10px 24px rgba(255,122,24,.28);}
.btn-accent:active{background:#D95F06;transform:translateY(0);}
.btn-primary{background:var(--blue);color:#fff;}
.btn-primary:hover{background:var(--blue-dark);color:#fff;transform:translateY(-2px);box-shadow:0 10px 24px rgba(27,95,217,.24);}
.btn-primary:active{background:#0A3178;transform:translateY(0);}
.btn-ghost{background:#fff;color:var(--blue);border-color:var(--blue);}
.btn-ghost:hover{background:var(--blue-light);color:var(--blue-dark);border-color:var(--blue-dark);}
.btn-ghost:active{background:#D8E6FD;}
.btn:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(27,95,217,.25);}
.btn-sm{height:38px;font-size:13px;padding:0 16px;border-radius:var(--r-btn);}

/* ---------- Hero ---------- */
.hero{padding:32px 0 0;}
.hero-inner{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:40px;
  align-items:stretch;
  background:var(--card);
  border:1px solid var(--border);
  border-radius:24px;
  padding:40px;
  box-shadow:var(--sh-card);
  min-height:440px;
}
.hero-copy{display:flex;flex-direction:column;justify-content:center;}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  align-self:flex-start;
  font-size:12px;font-weight:700;letter-spacing:.04em;
  color:var(--blue);background:var(--blue-light);
  padding:5px 12px;border-radius:999px;
}
.hero h1{
  font-size:40px;line-height:1.25;font-weight:700;
  letter-spacing:-.01em;
  margin:18px 0 16px;
}
.hero-sub{font-size:17px;color:var(--text-2);line-height:1.7;margin-bottom:26px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:24px;}
.hero-points{display:flex;flex-direction:column;gap:8px;}
.hero-points li{
  display:flex;align-items:flex-start;gap:8px;
  font-size:14px;color:var(--text-2);
}
.hero-points i{color:var(--blue);font-size:13px;margin-top:5px;}
.hero-media{
  position:relative;
  border-radius:20px;
  overflow:hidden;
  min-height:320px;
}
.hero-media img{width:100%;height:100%;object-fit:cover;min-height:320px;}
.hero-media::after{
  content:"";position:absolute;inset:0;
  background:rgba(255,255,255,.06);
  pointer-events:none;
}

/* ---------- Metrics ---------- */
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.metric-card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--r-card);
  padding:24px;
  box-shadow:var(--sh-card);
  transition:transform var(--t),box-shadow var(--t);
}
.metric-card:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);}
.metric-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:10px;}
.metric-value{font-size:34px;line-height:1.1;font-weight:700;color:var(--blue);font-variant-numeric:tabular-nums;}
.metric-label{font-size:12px;color:var(--text-3);}
.trend{
  display:inline-flex;align-items:center;gap:5px;
  font-size:12px;font-weight:600;
  padding:2px 9px;border-radius:999px;
  background:#EEF2F8;color:var(--text-2);
  white-space:nowrap;
}
.trend .dot{width:6px;height:6px;border-radius:50%;background:var(--text-3);}
.trend-accent{background:rgba(255,122,24,.12);color:#C45607;}
.trend-accent .dot{background:var(--orange);}
.trend-up{background:rgba(18,167,107,.10);color:var(--up);}

/* ---------- Bento ---------- */
.bento{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  grid-template-rows:repeat(2,minmax(150px,auto));
  gap:20px;
}
.bento-lg{
  grid-column:1 / 3;
  grid-row:1 / 3;
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--r-card);
  padding:32px;
  box-shadow:var(--sh-card);
  display:flex;flex-direction:column;
  transition:transform var(--t),box-shadow var(--t);
}
.bento-lg:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);}
.bento-item{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--r-card);
  padding:20px;
  box-shadow:var(--sh-card);
  display:flex;flex-direction:column;gap:8px;
  transition:transform var(--t),box-shadow var(--t);
}
.bento-item:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);}
.icon-box{
  width:40px;height:40px;flex:0 0 40px;
  border-radius:12px;
  background:rgba(27,95,217,.10);
  color:var(--blue);
  display:flex;align-items:center;justify-content:center;
  font-size:17px;
}
.bento-lg h3{font-size:20px;font-weight:700;margin:18px 0 12px;}
.bento-lg ul{display:flex;flex-direction:column;gap:10px;margin-bottom:auto;}
.bento-lg ul li{
  display:flex;gap:9px;align-items:flex-start;
  font-size:15px;color:var(--text-2);
}
.bento-lg ul li i{color:var(--blue);font-size:12px;margin-top:7px;}
.bento-item h4{font-size:15px;font-weight:600;color:var(--text);}
.bento-item p{font-size:13px;color:var(--text-3);line-height:1.6;}

/* ---------- Compare ---------- */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.compare-card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--r-card);
  padding:28px;
  box-shadow:var(--sh-card);
}
.compare-card.is-good{border-color:rgba(27,95,217,.28);}
.compare-head{display:flex;align-items:center;gap:10px;margin-bottom:18px;}
.compare-head h3{font-size:18px;font-weight:700;}
.compare-head .badge{
  font-size:12px;font-weight:600;padding:3px 10px;border-radius:999px;
  background:#EEF2F8;color:var(--text-2);
}
.compare-head .badge-good{background:var(--blue-light);color:var(--blue);}
.compare-list{display:flex;flex-direction:column;}
.compare-list li{
  display:flex;gap:10px;align-items:flex-start;
  padding:12px 0;
  border-top:1px solid var(--line);
  font-size:15px;color:var(--text-2);
  line-height:1.7;
}
.compare-list li:first-child{border-top:none;padding-top:0;}
.compare-list .mark{
  width:14px;height:14px;flex:0 0 14px;border-radius:50%;
  margin-top:7px;
  background:var(--line);
  position:relative;
}
.compare-list .mark-diff{background:var(--orange);}
.compare-list .mark-diff::after{
  content:"";position:absolute;inset:0;border-radius:50%;
  box-shadow:0 0 0 4px rgba(255,122,24,.16);
}

/* ---------- News (CMS) ---------- */
.news-card{
  display:flex;flex-direction:column;
  height:100%;
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-card);
  color:inherit;
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);border-color:rgba(27,95,217,.28);color:inherit;}
.news-thumb{position:relative;width:100%;aspect-ratio:16/9;overflow:hidden;background:var(--blue-light);}
.news-thumb img{width:100%;height:100%;object-fit:cover;border-radius:12px 12px 0 0;transition:transform 320ms ease-out;}
.news-card:hover .news-thumb img{transform:scale(1.04);}
.news-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto;}
.news-badge{
  align-self:flex-start;
  font-size:12px;font-weight:600;
  padding:3px 10px;border-radius:999px;
  background:var(--blue-light);color:var(--blue);
}
.news-title{font-size:17px;font-weight:700;line-height:1.5;color:var(--text);}
.news-desc{
  font-size:14px;color:var(--text-2);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{
  margin-top:auto;
  display:flex;align-items:center;gap:6px;
  font-size:12px;color:var(--text-3);
}
.empty-state{
  background:var(--card);
  border:1px dashed var(--border);
  border-radius:var(--r-card);
  padding:56px 24px;
  text-align:center;
}
.empty-state i{font-size:26px;color:var(--blue);margin-bottom:12px;display:block;}
.empty-state p{font-size:15px;color:var(--text-2);margin-bottom:18px;}

/* ---------- Scenes ---------- */
.scenes{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.scene-card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--r-card);
  padding:24px;
  box-shadow:var(--sh-card);
  transition:transform var(--t),box-shadow var(--t);
}
.scene-card:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);}
.scene-card h3{font-size:16px;font-weight:700;margin:16px 0 8px;}
.scene-card p{font-size:14px;color:var(--text-2);line-height:1.7;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px;}
.accordion{background:transparent !important;border:none !important;margin:0;}
.accordion .accordion-item{
  background:var(--card) !important;
  border:1px solid var(--border) !important;
  border-radius:12px !important;
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color var(--t),box-shadow var(--t);
}
.accordion .accordion-item:hover{border-color:rgba(27,95,217,.28) !important;}
.accordion .accordion-title{
  position:relative;
  display:block;
  padding:18px 56px 18px 20px !important;
  font-size:16px !important;
  font-weight:500;
  color:var(--text) !important;
  background:var(--card) !important;
  border:none !important;
  line-height:1.6;
  transition:background var(--t),color var(--t);
}
.accordion .accordion-title:hover{background:#FAFCFF !important;color:var(--blue) !important;}
.accordion .accordion-title:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(27,95,217,.18) inset;}
.accordion .accordion-title::before{
  content:"\f067" !important;
  font-family:"Font Awesome 6 Free";
  font-weight:900;
  position:absolute;
  right:22px;top:50%;transform:translateY(-50%);
  font-size:13px;
  color:var(--blue);
  margin:0 !important;
  background:none !important;
  width:auto !important;height:auto !important;
}
.accordion .accordion-item.is-active .accordion-title::before{content:"\f068" !important;}
.accordion .accordion-content{
  padding:0 20px 20px !important;
  border:none !important;
  background:var(--card) !important;
  font-size:15px;
  line-height:1.75;
  color:var(--text-2);
}

/* ---------- CTA form ---------- */
.cta-panel{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:24px;
  box-shadow:var(--sh-card);
  padding:40px;
}
.cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start;}
.cta-copy h2{font-size:28px;line-height:1.35;font-weight:700;margin:14px 0 12px;}
.cta-copy > p{font-size:15px;color:var(--text-2);margin-bottom:22px;}
.cta-points{display:flex;flex-direction:column;gap:14px;}
.cta-points li{display:flex;gap:12px;align-items:flex-start;}
.cta-points .num-badge{
  width:26px;height:26px;flex:0 0 26px;
  border-radius:999px;
  background:var(--blue-light);color:var(--blue);
  font-size:12px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
}
.cta-points span{font-size:14px;color:var(--text-2);line-height:1.7;}

.form-card{
  background:#fff;
  border:1px solid var(--border);
  border-radius:16px;
  padding:28px;
  box-shadow:0 1px 2px rgba(15,27,45,.04);
}
.field{display:flex;flex-direction:column;gap:8px;margin-bottom:18px;}
.field label{font-size:14px;font-weight:500;color:var(--text-2);}
.field input,
.field select,
.field textarea{
  width:100%;
  height:46px;
  padding:0 14px;
  font-family:inherit;
  font-size:15px;
  color:var(--text);
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--r-input);
  transition:border-color var(--t),box-shadow var(--t);
  appearance:none;
}
.field textarea{height:auto;min-height:112px;padding:12px 14px;resize:vertical;line-height:1.7;}
.field select{
  background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath fill='%234A5A73' d='M8 11L3 6h10z'/%3E%3C/svg%3E");
  background-repeat:no-repeat;
  background-position:right 14px center;
  background-size:14px;
  padding-right:38px;
}
.field input:focus,
.field select:focus,
.field textarea:focus{
  outline:none;
  border-color:var(--blue);
  box-shadow:0 0 0 3px rgba(27,95,217,.15);
}
.field.has-error input,
.field.has-error select,
.field.has-error textarea{border-color:var(--down);}
.field .err{font-size:12px;color:var(--down);display:none;}
.field.has-error .err{display:block;}
.form-actions{display:flex;align-items:center;gap:16px;flex-wrap:wrap;}
.form-actions .btn{flex:0 0 auto;}
.form-note{font-size:13px;color:var(--up);}
.form-note[hidden]{display:none;}

/* ---------- Footer ---------- */
.site-footer{
  margin-top:auto;
  background:#fff;
  border-top:1px solid var(--border);
  padding-top:56px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:32px;
  padding-bottom:40px;
}
.footer-brand{display:flex;flex-direction:column;gap:14px;}
.footer-brand .brand-name{font-size:16px;}
.footer-brand p{font-size:14px;color:var(--text-2);line-height:1.75;max-width:320px;}
.footer-col h4{font-size:14px;font-weight:700;color:var(--text);margin-bottom:14px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col li{font-size:14px;color:var(--text-2);}
.footer-col a{color:var(--text-2);}
.footer-col a:hover{color:var(--blue);text-decoration:underline;}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:20px 0 28px;
  display:flex;justify-content:space-between;align-items:center;
  gap:12px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3);}
.footer-bottom a:hover{color:var(--blue);}

/* ---------- Tablet: icon rail ---------- */
@media (min-width:1024px) and (max-width:1199px){
  :root{--sidebar-w:76px;}
  .sidebar{width:76px;padding:0 12px 20px;overflow:visible;}
  .sidebar:hover{width:248px;box-shadow:0 0 40px rgba(15,27,45,.14);}
  .brand{justify-content:flex-start;padding:0 6px;}
  .brand-text{opacity:0;transition:opacity 140ms ease-out;}
  .sidebar:hover .brand-text{opacity:1;}
  .nav-item{justify-content:flex-start;}
  .nav-item span{opacity:0;transition:opacity 140ms ease-out;}
  .sidebar:hover .nav-item span{opacity:1;}
  .side-cta{opacity:0;pointer-events:none;transition:opacity 140ms ease-out;}
  .sidebar:hover .side-cta{opacity:1;pointer-events:auto;}
  .container{padding:0 28px;}
}

/* ---------- Mobile: drawer ---------- */
@media (max-width:1023px){
  .sidebar{
    width:280px;
    transform:translateX(-100%);
    transition:transform 240ms ease-out;
    box-shadow:0 0 40px rgba(15,27,45,.20);
  }
  .sidebar.is-open{transform:translateX(0);}
  .main-wrap{margin-left:0;}
  .mobile-bar{display:flex;}
  .container{padding:0 20px;}
  .hero{padding:20px 0 0;}
  .hero-inner{grid-template-columns:1fr;gap:28px;padding:28px;min-height:0;}
  .hero-media{min-height:220px;}
  .hero-media img{min-height:220px;}
  .metrics{grid-template-columns:repeat(2,1fr);gap:16px;}
  .bento{grid-template-columns:1fr 1fr;grid-template-rows:auto;}
  .bento-lg{grid-column:1 / 3;grid-row:auto;padding:24px;}
  .compare{grid-template-columns:1fr;}
  .scenes{grid-template-columns:repeat(2,1fr);gap:16px;}
  .cta-grid{grid-template-columns:1fr;gap:28px;}
  .cta-panel{padding:28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .section{padding:48px 0;}
  .section-tight{padding:40px 0;}
}

@media (max-width:767px){
  .container{padding:0 16px;}
  .hero h1{font-size:28px;}
  .hero-sub{font-size:15px;}
  .section-head h2{font-size:22px;}
  .cta-copy h2{font-size:22px;}
  .bento{grid-template-columns:1fr;}
  .bento-lg{grid-column:1 / 2;}
  .footer-grid{grid-template-columns:1fr;}
  .metric-value{font-size:26px;}
  .form-card{padding:22px;}
  .cta-panel{padding:22px;}
  .compare-card{padding:22px;}
}

@media (max-width:520px){
  .hero-inner{padding:22px;}
  .hero-actions .btn{width:100%;}
  .scenes{grid-template-columns:1fr;}
  .metrics{grid-template-columns:repeat(2,1fr);gap:12px;}
  .metric-card{padding:16px;}
  .metric-value{font-size:22px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

/* roulang page: article */
:root{
  --brand:#1B5FD9;
  --brand-dark:#0E3F9E;
  --brand-light:#E8F0FE;
  --accent:#FF7A18;
  --bg:#F5F8FC;
  --card:#FFFFFF;
  --border:#E3EAF4;
  --divider:#EDF2F8;
  --text:#0F1B2D;
  --text-2:#4A5A73;
  --text-3:#8494AB;
  --up:#12A76B;
  --down:#E0483C;
  --r-card:16px;
  --r-btn:10px;
  --r-input:10px;
  --sh-1:0 1px 2px rgba(15,27,45,.04), 0 8px 24px rgba(15,27,45,.06);
  --sh-2:0 2px 4px rgba(15,27,45,.06), 0 14px 32px rgba(15,27,45,.10);
  --sidebar-w:248px;
  --sidebar-w-mini:76px;
  --topbar-h:56px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .18s ease-out;}
a:hover{color:var(--brand-dark);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700;color:var(--text);}
p{margin:0 0 18px;}
p:last-child{margin-bottom:0;}
button{font-family:inherit;}
:focus-visible{outline:3px solid rgba(27,95,217,.35);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 10px 0;z-index:999;
}
.skip-link:focus{left:0;color:#fff;}

/* 布局骨架 */
.app-shell{min-height:100vh;}
.sidebar{
  position:fixed;left:0;top:0;bottom:0;width:var(--sidebar-w);
  background:#fff;border-right:1px solid var(--border);
  display:flex;flex-direction:column;z-index:70;
  transition:transform .28s ease-out,width .2s ease-out;
}
.brand{
  height:72px;display:flex;align-items:center;gap:10px;
  padding:0 18px;border-bottom:1px solid var(--divider);flex:0 0 auto;
}
.brand-mark{
  width:36px;height:36px;border-radius:10px;flex:0 0 36px;
  background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center;
  font-weight:700;font-size:16px;letter-spacing:.5px;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;overflow:hidden;}
.brand-text strong{font-size:15px;color:var(--text);white-space:nowrap;}
.brand-text em{font-size:12px;color:var(--text-3);font-style:normal;white-space:nowrap;}
.side-nav{padding:16px 14px;display:flex;flex-direction:column;gap:4px;flex:1 1 auto;overflow-y:auto;}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;
  height:44px;padding:0 12px;border-radius:10px;
  color:var(--text-2);font-size:15px;white-space:nowrap;
  transition:background .15s ease-out,color .15s ease-out;
}
.nav-item i{width:20px;text-align:center;font-size:16px;flex:0 0 20px;}
.nav-item:hover{background:#F2F5FA;color:var(--text);}
.nav-item.is-active{background:var(--brand-light);color:var(--brand);font-weight:600;}
.nav-item.is-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:14px;border-top:1px solid var(--divider);flex:0 0 auto;}
.side-cta{
  background:var(--brand-light);border-radius:12px;padding:16px 14px;
}
.side-cta strong{display:block;font-size:13px;color:var(--brand-dark);margin-bottom:6px;}
.side-cta p{font-size:12px;color:var(--text-2);line-height:1.6;margin:0 0 10px;}
.side-cta a{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--brand);color:#fff;font-size:12px;font-weight:600;
  padding:7px 12px;border-radius:8px;
}
.side-cta a:hover{background:var(--brand-dark);color:#fff;}
.topbar{
  display:none;height:var(--topbar-h);align-items:center;gap:12px;
  padding:0 16px;background:#fff;border-bottom:1px solid var(--border);
  position:fixed;top:0;left:0;right:0;z-index:80;
}
.topbar-toggle{
  width:38px;height:38px;border:1px solid var(--border);background:#fff;
  border-radius:10px;color:var(--text);font-size:16px;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
}
.topbar-toggle:hover{border-color:var(--brand);color:var(--brand);}
.topbar-brand{display:flex;align-items:center;gap:8px;font-weight:700;font-size:15px;}
.topbar-cta{
  margin-left:auto;background:var(--accent);color:#fff;font-size:13px;font-weight:600;
  padding:8px 14px;border-radius:8px;
}
.topbar-cta:hover{background:#E86A0C;color:#fff;}
.app-main{margin-left:var(--sidebar-w);min-height:100vh;display:flex;flex-direction:column;}
.drawer-mask{
  position:fixed;inset:0;background:rgba(15,27,45,.45);
  opacity:0;visibility:hidden;transition:opacity .25s ease-out,visibility .25s;
  z-index:65;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 40px;}

/* 面包屑 */
.crumbs{padding:28px 0 0;}
.crumbs ol{display:flex;flex-wrap:wrap;gap:8px;font-size:14px;color:var(--text-3);}
.crumbs li{display:flex;align-items:center;gap:8px;}
.crumbs li::after{content:"/";color:#C6D2E2;}
.crumbs li:last-child::after{display:none;}
.crumbs a{color:var(--text-2);}
.crumbs a:hover{color:var(--brand);}
.crumbs span{color:var(--text-3);}

/* 文章头部 */
.article-head{padding:18px 0 0;}
.article-head h1{
  font-size:40px;line-height:1.25;letter-spacing:-.4px;margin-bottom:18px;
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  font-size:14px;color:var(--text-3);margin-bottom:22px;
  font-variant-numeric:tabular-nums;
}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--brand-light);color:var(--brand-dark);
  font-size:12px;font-weight:600;padding:4px 12px;border-radius:999px;
}
.chip-soft{background:#F2F5FA;color:var(--text-2);}
.dot-sep{width:4px;height:4px;border-radius:999px;background:#C6D2E2;}
.article-cover{
  width:100%;aspect-ratio:16/9;object-fit:cover;
  border-radius:12px;background:var(--brand-light);margin-bottom:34px;
}
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 240px;
  gap:40px;align-items:start;padding-bottom:8px;
}
.article-content{max-width:760px;width:100%;}
.article-body{font-size:16px;line-height:1.85;color:var(--text);}
.article-body h2{
  font-size:24px;line-height:1.4;margin:38px 0 16px;padding-left:14px;
  border-left:4px solid var(--brand);
}
.article-body h3{font-size:20px;margin:28px 0 12px;color:var(--text);}
.article-body p{margin:0 0 18px;}
.article-body ul,.article-body ol{margin:0 0 18px;padding-left:22px;list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{margin-bottom:10px;padding-left:2px;}
.article-body ul li::marker{color:var(--brand);}
.article-body ol li::marker{color:var(--brand);font-weight:700;}
.article-body blockquote{
  margin:22px 0;padding:18px 20px;background:var(--brand-light);
  border-left:3px solid var(--brand);border-radius:0 12px 12px 0;color:var(--text-2);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:12px;margin:20px 0 8px;background:var(--brand-light);object-fit:cover;}
.article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px;}
.article-body table{
  width:100%;border-collapse:collapse;margin:20px 0;font-size:15px;
  display:block;overflow-x:auto;white-space:nowrap;
}
.article-body th,.article-body td{
  border:1px solid var(--border);padding:10px 14px;text-align:left;
}
.article-body th{background:#F7FAFF;color:var(--brand-dark);font-weight:600;}
.article-body code{
  background:#F2F5FA;border-radius:6px;padding:2px 6px;font-size:14px;color:var(--brand-dark);
}
.article-caption{font-size:13px;color:var(--text-3);margin:0 0 22px;text-align:center;}

/* 标签 */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin:34px 0 0;padding-top:26px;border-top:1px solid var(--divider);}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  background:#fff;border:1px solid var(--border);color:var(--text-2);
  font-size:13px;padding:6px 14px;border-radius:999px;
}
.tag:hover{border-color:var(--brand);color:var(--brand);}

/* 翻页 */
.pager{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:28px;}
.pager-item{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  padding:20px 22px;box-shadow:var(--sh-1);
  transition:box-shadow .18s ease-out,transform .18s ease-out,border-color .18s ease-out;
}
.pager-item:hover{box-shadow:var(--sh-2);transform:translateY(-2px);border-color:#D4E0F2;}
.pager-item em{font-style:normal;font-size:12px;color:var(--text-3);display:block;margin-bottom:8px;}
.pager-item strong{display:block;font-size:16px;color:var(--text);margin-bottom:6px;}
.pager-item p{font-size:14px;color:var(--text-2);margin:0;}

/* 通用板块 */
.section{padding:64px 0 0;}
.section-head{margin-bottom:26px;}
.section-head h2{font-size:28px;line-height:1.35;}
.section-head p{font-size:15px;color:var(--text-2);margin:8px 0 0;}
.card{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  transition:box-shadow .18s ease-out,transform .18s ease-out;
}
.card:hover{box-shadow:var(--sh-2);transform:translateY(-2px);}
.related-card{display:block;overflow:hidden;height:100%;}
.related-card img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:12px 12px 0 0;background:var(--brand-light);}
.related-body{padding:18px 20px 22px;}
.related-body .chip{margin-bottom:10px;}
.related-body h3{font-size:17px;margin-bottom:8px;color:var(--text);}
.related-body p{font-size:14px;color:var(--text-2);margin:0 0 12px;}
.related-more{font-size:14px;font-weight:600;color:var(--brand);}
.related-card:hover h3{color:var(--brand);}

/* FAQ */
.faq-accordion{border:none;background:transparent;margin:0;}
.faq-accordion .accordion-item{
  background:#fff;border:1px solid var(--border);border-radius:14px;
  margin-bottom:12px;overflow:hidden;box-shadow:var(--sh-1);
}
.faq-accordion .accordion-title{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:16px;font-weight:500;color:var(--text);
  padding:18px 20px;border:none;background:#fff;transition:background .15s ease-out;
}
.faq-accordion .accordion-title:hover{background:#F7FAFF;color:var(--brand-dark);}
.faq-accordion .accordion-title::before{
  content:"\f067";font-family:"Font Awesome 6 Free";font-weight:900;
  font-size:13px;color:var(--brand);order:2;flex:0 0 auto;
}
.faq-accordion .accordion-item.is-active .accordion-title::before{content:"\f068";}
.faq-accordion .accordion-content{
  display:none;padding:0 20px 20px;border:none;background:#fff;
  font-size:15px;line-height:1.75;color:var(--text-2);
}
.faq-accordion .accordion-content p{margin:0 0 12px;}
.faq-accordion .accordion-content p:last-child{margin-bottom:0;}

/* 反馈 / CTA */
.cta-band{
  margin-top:64px;background:#fff;border:1px solid var(--border);
  border-radius:20px;box-shadow:var(--sh-1);overflow:hidden;
}
.cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:0;}
.cta-left{
  padding:36px 34px;background:linear-gradient(180deg,#F7FAFF 0%,#FFFFFF 100%);
  border-right:1px solid var(--divider);
}
.cta-left h2{font-size:24px;margin-bottom:12px;}
.cta-left p{font-size:15px;color:var(--text-2);}
.cta-points{margin-top:20px;display:flex;flex-direction:column;gap:12px;}
.cta-points li{display:flex;gap:10px;font-size:15px;color:var(--text-2);}
.cta-points i{color:var(--brand);font-size:14px;margin-top:5px;}
.cta-form{padding:36px 34px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:14px;font-weight:600;color:var(--text-2);margin-bottom:8px;}
.field input,.field textarea,.field select{
  width:100%;font-size:15px;color:var(--text);background:#fff;
  border:1px solid var(--border);border-radius:var(--r-input);
  padding:12px 14px;line-height:1.5;transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.field textarea{min-height:104px;resize:vertical;}
.field input:focus,.field textarea:focus,.field select:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(27,95,217,.15);
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;border-radius:var(--r-btn);
  padding:12px 22px;border:1px solid transparent;cursor:pointer;
  transition:background .18s ease-out,border-color .18s ease-out,color .18s ease-out,transform .18s ease-out;
}
.btn-primary{background:var(--brand);color:#fff;}
.btn-primary:hover{background:var(--brand-dark);color:#fff;}
.btn-primary:active{background:var(--brand-dark);transform:translateY(1px);}
.btn-ghost{background:#fff;color:var(--brand);border-color:#C9DAF4;}
.btn-ghost:hover{border-color:var(--brand);background:var(--brand-light);color:var(--brand-dark);}
.btn-accent{background:var(--accent);color:#fff;}
.btn-accent:hover{background:#E86A0C;color:#fff;}
.btn-block{width:100%;}
.form-note{font-size:12px;color:var(--text-3);margin-top:10px;}

/* 侧栏快捷入口 */
.article-aside{position:sticky;top:24px;}
.aside-card{
  background:#fff;border:1px solid var(--border);border-radius:14px;
  padding:20px;box-shadow:var(--sh-1);margin-bottom:18px;
}
.aside-card h4{font-size:14px;color:var(--text);margin-bottom:14px;letter-spacing:.2px;}
.aside-list li{margin-bottom:4px;}
.aside-list a{
  display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-2);
  padding:8px 10px;border-radius:8px;transition:background .15s ease-out,color .15s ease-out;
}
.aside-list a:hover{background:var(--brand-light);color:var(--brand-dark);}
.aside-list i{font-size:11px;color:var(--brand);}
.aside-cta{
  background:var(--brand);border-radius:14px;padding:20px;color:#fff;
}
.aside-cta strong{display:block;font-size:15px;margin-bottom:8px;}
.aside-cta p{font-size:13px;line-height:1.6;color:rgba(255,255,255,.85);margin:0 0 14px;}
.aside-cta a{
  display:inline-flex;align-items:center;gap:6px;background:#fff;color:var(--brand-dark);
  font-size:13px;font-weight:600;padding:8px 14px;border-radius:8px;
}
.aside-cta a:hover{background:#EAF1FE;color:var(--brand-dark);}

/* 空态 */
.empty-state{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  padding:56px 30px;text-align:center;box-shadow:var(--sh-1);
}
.empty-state i{font-size:34px;color:var(--brand);margin-bottom:16px;display:block;}
.empty-state h2{font-size:22px;margin-bottom:10px;}
.empty-state p{font-size:15px;color:var(--text-2);margin:0 0 22px;}

/* 页脚 */
.site-footer{
  margin-top:72px;background:#fff;border-top:1px solid var(--border);
  padding:52px 0 0;
}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;
}
.footer-brand .brand-name{
  display:inline-block;font-size:17px;font-weight:700;color:var(--text);margin-bottom:12px;
}
.footer-brand p{font-size:14px;color:var(--text-2);margin:0;max-width:320px;}
.footer-col h4{font-size:15px;margin-bottom:14px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col li{font-size:14px;color:var(--text-2);}
.footer-col a{font-size:14px;color:var(--text-2);}
.footer-col a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:3px;}
.footer-bottom{
  margin-top:44px;border-top:1px solid var(--divider);
  padding:20px 0 26px;display:flex;flex-wrap:wrap;gap:10px;
  justify-content:space-between;font-size:13px;color:var(--text-3);
}

/* 断点：1024-1199 图标栏 */
@media (max-width:1199px){
  .sidebar{width:var(--sidebar-w-mini);}
  .brand{padding:0;justify-content:center;}
  .brand-text{display:none;}
  .side-nav{padding:16px 12px;align-items:center;}
  .nav-item{width:44px;justify-content:center;padding:0;gap:0;}
  .nav-item i{margin:0;}
  .nav-item span{
    position:absolute;left:56px;top:50%;transform:translateY(-50%);
    background:#0F1B2D;color:#fff;font-size:13px;font-weight:500;
    padding:6px 12px;border-radius:8px;white-space:nowrap;display:none;z-index:90;
  }
  .nav-item:hover span{display:block;}
  .sidebar-foot{padding:12px 10px;}
  .side-cta{padding:12px 8px;text-align:center;}
  .side-cta strong,.side-cta p{display:none;}
  .side-cta a{font-size:0;padding:10px;border-radius:10px;justify-content:center;}
  .side-cta a i{font-size:15px;}
  .app-main{margin-left:var(--sidebar-w-mini);}
  .article-layout{grid-template-columns:minmax(0,1fr);}
  .article-aside{display:none;}
  .cta-grid{grid-template-columns:1fr;}
  .cta-left{border-right:none;border-bottom:1px solid var(--divider);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}

/* 断点：<1024 抽屉 */
@media (max-width:1023px){
  .topbar{display:flex;}
  .sidebar{
    width:280px;transform:translateX(-100%);
    box-shadow:0 0 40px rgba(15,27,45,.18);
  }
  .sidebar.is-open{transform:translateX(0);}
  .brand{padding:0 18px;justify-content:flex-start;}
  .brand-text{display:flex;}
  .side-nav{padding:16px 14px;align-items:stretch;}
  .nav-item{width:100%;justify-content:flex-start;padding:0 12px;gap:12px;}
  .nav-item span{
    position:static;transform:none;background:transparent;color:inherit;
    font-size:15px;font-weight:inherit;padding:0;display:inline;border-radius:0;
  }
  .sidebar-foot{padding:14px;}
  .side-cta{padding:16px 14px;text-align:left;}
  .side-cta strong,.side-cta p{display:block;}
  .side-cta a{font-size:12px;padding:7px 12px;justify-content:flex-start;}
  .side-cta a span{display:inline;}
  .app-main{margin-left:0;padding-top:var(--topbar-h);}
  .container{padding:0 28px;}
  .article-head h1{font-size:32px;}
  .section{padding:52px 0 0;}
  .section-head h2{font-size:24px;}
}

/* 断点：<768 */
@media (max-width:767px){
  .container{padding:0 16px;}
  .article-head h1{font-size:28px;line-height:1.3;}
  .article-body h2{font-size:21px;}
  .article-body h3{font-size:18px;}
  .crumbs{padding-top:20px;}
  .pager{grid-template-columns:1fr;}
  .cta-left,.cta-form{padding:26px 20px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;gap:6px;}
  .section{padding:44px 0 0;}
  .section-head h2{font-size:22px;}
  .site-footer{margin-top:52px;padding-top:40px;}
}

/* 断点：<520 */
@media (max-width:519px){
  .article-head h1{font-size:25px;}
  .meta-row{font-size:13px;gap:8px;}
  .article-cover{border-radius:10px;margin-bottom:24px;}
  .cta-band{border-radius:16px;}
  .faq-accordion .accordion-title{font-size:15px;padding:16px;}
  .brand-text strong{font-size:14px;}
}

/* roulang page: category1 */
:root{
  --c-primary:#1B5FD9;
  --c-primary-dark:#0E3F9E;
  --c-primary-soft:#E8F0FE;
  --c-accent:#FF7A18;
  --c-accent-dark:#E96A0C;
  --c-bg:#F5F8FC;
  --c-card:#FFFFFF;
  --c-border:#E3EAF4;
  --c-divider:#EDF2F8;
  --c-text:#0F1B2D;
  --c-text-2:#4A5A73;
  --c-text-3:#8494AB;
  --c-up:#12A76B;
  --c-down:#E0483C;
  --r-card:16px;
  --r-btn:10px;
  --r-input:10px;
  --sh-card:0 1px 2px rgba(15,27,45,.04), 0 8px 24px rgba(15,27,45,.06);
  --sh-card-hover:0 2px 4px rgba(15,27,45,.08), 0 14px 32px rgba(15,27,45,.10);
  --sidebar-w:248px;
  --ease:180ms ease-out;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;line-height:1.75;color:var(--c-text);background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:var(--c-primary);text-decoration:none;transition:color var(--ease)}
a:hover{color:var(--c-primary-dark)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,h5,p{margin:0}
h1,h2,h3,h4{line-height:1.35;font-weight:700;color:var(--c-text)}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}
.skip-link{position:absolute;left:-9999px;top:0;background:#fff;color:var(--c-primary);padding:10px 16px;border-radius:0 0 10px 0;z-index:200}
.skip-link:focus{left:0}
.num{font-variant-numeric:tabular-nums;font-weight:700}
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 40px}

/* ===== 侧栏 App Shell ===== */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
  background:#fff;border-right:1px solid var(--c-border);
  display:flex;flex-direction:column;padding:0 16px 20px;overflow-y:auto;z-index:60;
}
.brand{height:72px;display:flex;align-items:center;gap:10px;padding:0 6px;flex-shrink:0}
.brand-mark{
  width:34px;height:34px;border-radius:10px;background:var(--c-primary);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:15px;font-weight:700;flex-shrink:0;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-name{font-size:15px;font-weight:700;color:var(--c-text);letter-spacing:.2px}
.brand-sub{font-size:11px;color:var(--c-text-3);letter-spacing:.4px}
.side-nav{display:flex;flex-direction:column;gap:4px;padding-top:8px}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;height:44px;padding:0 12px;
  border-radius:10px;color:var(--c-text-2);font-size:15px;transition:background var(--ease),color var(--ease);
}
.nav-item i{width:20px;text-align:center;font-size:16px;flex-shrink:0}
.nav-item:hover{background:#F3F7FD;color:var(--c-primary-dark)}
.nav-item.is-active{background:var(--c-primary-soft);color:var(--c-primary-dark);font-weight:600}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;border-radius:0 3px 3px 0;background:var(--c-primary);
}
.side-cta{
  margin-top:auto;background:var(--c-primary-soft);border-radius:12px;padding:16px;margin-bottom:4px;
}
.side-cta strong{display:block;font-size:14px;color:var(--c-primary-dark);margin-bottom:6px;line-height:1.5}
.side-cta p{font-size:12px;color:var(--c-text-2);line-height:1.6;margin-bottom:12px}
.side-cta .btn{width:100%;justify-content:center;height:40px;font-size:14px}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:background var(--ease),color var(--ease),border-color var(--ease),box-shadow var(--ease),transform var(--ease);
}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-primary-dark);color:#fff}
.btn-primary:active{transform:translateY(1px)}
.btn-accent{background:var(--c-accent);color:#fff}
.btn-accent:hover{background:var(--c-accent-dark);color:#fff}
.btn-accent:active{transform:translateY(1px)}
.btn-ghost{background:#fff;color:var(--c-primary-dark);border-color:var(--c-primary)}
.btn-ghost:hover{background:var(--c-primary-soft);color:var(--c-primary-dark)}
.btn-sm{height:36px;padding:0 14px;font-size:13px;border-radius:9px}

/* ===== 主区域 ===== */
.app-main{margin-left:var(--sidebar-w);min-height:100vh;display:flex;flex-direction:column}
main{flex:1 0 auto}

/* ===== 移动端顶栏与抽屉 ===== */
.mobile-bar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;background:#fff;
  border-bottom:1px solid var(--c-border);align-items:center;gap:12px;padding:0 14px;z-index:70;
}
.hamburger{
  width:38px;height:38px;border-radius:10px;border:1px solid var(--c-border);background:#fff;
  color:var(--c-text);cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:16px;
}
.hamburger:hover{background:var(--c-primary-soft);color:var(--c-primary-dark)}
.mobile-brand{font-size:15px;font-weight:700;color:var(--c-text);flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.drawer-mask{
  display:none;position:fixed;inset:0;background:rgba(15,27,45,.45);z-index:65;opacity:0;transition:opacity 240ms ease-out;
}
.drawer-mask.is-open{display:block;opacity:1}

/* ===== 面包屑 ===== */
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--c-text-3);padding-bottom:18px;flex-wrap:wrap}
.breadcrumb a{color:var(--c-text-3)}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb span[aria-current]{color:var(--c-text-2)}

/* ===== 页头 Hero ===== */
.page-hero{background:#fff;border-bottom:1px solid var(--c-border);padding:36px 0 26px}
.hero-row{padding-top:14px}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;border-radius:999px;
  background:var(--c-primary-soft);color:var(--c-primary-dark);font-size:13px;font-weight:600;margin-bottom:16px;
}
.page-hero h1{font-size:40px;line-height:1.25;letter-spacing:-.4px}
.hero-sub{margin-top:16px;font-size:17px;color:var(--c-text-2);max-width:620px;line-height:1.75}
.hero-actions{display:flex;gap:14px;margin-top:26px;flex-wrap:wrap}
.hero-media{border-radius:20px;overflow:hidden;background:var(--c-primary-soft);aspect-ratio:16/11;position:relative}
.hero-media img{width:100%;height:100%;object-fit:cover}
.hero-media::after{content:"";position:absolute;inset:0;background:rgba(255,255,255,.06)}

/* ===== 筛选条 ===== */
.chip-bar{display:flex;gap:10px;flex-wrap:wrap;margin-top:34px;padding-top:22px;border-top:1px solid var(--c-divider)}
.chip{
  height:38px;padding:0 18px;border-radius:999px;border:1px solid var(--c-border);background:#fff;
  color:var(--c-text-2);font-size:14px;cursor:pointer;transition:all var(--ease);
}
.chip:hover{border-color:var(--c-primary);color:var(--c-primary)}
.chip.is-active{background:var(--c-primary);border-color:var(--c-primary);color:#fff;font-weight:600}

/* ===== 板块 ===== */
.section{padding:72px 0}
.section--tight{padding:56px 0}
.section--soft{background:#fff;border-top:1px solid var(--c-border);border-bottom:1px solid var(--c-border)}
.section-head{margin-bottom:34px}
.section-head h2{font-size:28px;position:relative;padding-left:16px}
.section-head h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:2px;background:var(--c-primary);
}
.section-head p{margin-top:12px;color:var(--c-text-2);max-width:780px;padding-left:16px}

/* ===== 入口卡片 ===== */
.entry-card{
  background:var(--c-card);border:1px solid var(--c-border);border-radius:var(--r-card);
  box-shadow:var(--sh-card);overflow:hidden;height:100%;display:flex;flex-direction:column;
  transition:box-shadow var(--ease),transform var(--ease),border-color var(--ease);
}
.entry-card:hover{box-shadow:var(--sh-card-hover);transform:translateY(-2px);border-color:#D6E3F5}
.media{position:relative;aspect-ratio:16/9;background:var(--c-primary-soft);overflow:hidden}
.media img{width:100%;height:100%;object-fit:cover;position:relative;z-index:1;transition:transform 300ms ease-out}
.entry-card:hover .media img{transform:scale(1.03)}
.media-fallback{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;color:var(--c-primary);font-size:26px;opacity:.55}
.entry-card__body{padding:20px 20px 22px;display:flex;flex-direction:column;flex:1 1 auto}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  font-size:12px;font-weight:600;background:var(--c-primary-soft);color:var(--c-primary-dark);align-self:flex-start;
}
.badge--accent{background:#FFF1E6;color:#C25A00}
.entry-card h3{font-size:20px;margin-top:12px}
.entry-card .desc{
  margin-top:10px;font-size:14.5px;color:var(--c-text-2);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-link{margin-top:16px;font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:8px;color:var(--c-primary)}
.card-link i{font-size:12px;transition:transform var(--ease)}
.card-link:hover i{transform:translateX(3px)}

/* ===== 核对清单 ===== */
.check-grid{display:grid;grid-template-columns:1.5fr 1fr;gap:32px;align-items:start}
.check-list{background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);box-shadow:var(--sh-card);padding:8px 26px}
.check-item{display:flex;gap:18px;padding:22px 0;border-bottom:1px solid var(--c-divider)}
.check-item:last-child{border-bottom:0}
.check-index{font-size:22px;color:var(--c-primary);font-variant-numeric:tabular-nums;font-weight:700;min-width:38px;line-height:1.4}
.check-item h3{font-size:17px}
.check-item p{margin-top:6px;font-size:14.5px;color:var(--c-text-2)}
.tip-card{background:var(--c-primary-dark);color:#fff;border-radius:var(--r-card);padding:26px}
.tip-card h3{color:#fff;font-size:18px}
.tip-card p{margin-top:10px;font-size:14.5px;color:rgba(255,255,255,.82);line-height:1.8}
.tip-card ul{margin-top:18px;display:flex;flex-direction:column;gap:12px}
.tip-card li{display:flex;gap:10px;font-size:14px;color:rgba(255,255,255,.9)}
.tip-card li i{color:var(--c-accent);margin-top:4px;font-size:13px}

/* ===== 适用场景 ===== */
.scene-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.scene{
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);padding:22px 20px;
  box-shadow:var(--sh-card);transition:box-shadow var(--ease),transform var(--ease);
}
.scene:hover{box-shadow:var(--sh-card-hover);transform:translateY(-2px)}
.scene-icon{
  width:42px;height:42px;border-radius:12px;background:var(--c-primary-soft);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;font-size:18px;margin-bottom:14px;
}
.scene h3{font-size:16px}
.scene p{margin-top:8px;font-size:14px;color:var(--c-text-2);line-height:1.7}

/* ===== 流程步骤 ===== */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;counter-reset:step}
.step{
  position:relative;background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);
  padding:24px 20px;box-shadow:var(--sh-card);
}
.step::before{
  counter-increment:step;content:counter(step,decimal-leading-zero);
  font-size:13px;font-weight:700;color:var(--c-primary);letter-spacing:1px;
  display:block;margin-bottom:10px;font-variant-numeric:tabular-nums;
}
.step h3{font-size:17px}
.step p{margin-top:8px;font-size:14px;color:var(--c-text-2);line-height:1.7}
.step .time{
  display:inline-flex;align-items:center;gap:6px;margin-top:14px;font-size:12px;color:var(--c-text-3);
}

/* ===== 异常对照 ===== */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.compare-card{background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);box-shadow:var(--sh-card);padding:26px}
.compare-card h3{font-size:18px;display:flex;align-items:center;gap:10px}
.compare-card h3 i{font-size:16px}
.compare-card--left h3 i{color:var(--c-text-3)}
.compare-card--right h3 i{color:var(--c-primary)}
.compare-list{margin-top:18px;display:flex;flex-direction:column;gap:14px}
.compare-list li{
  display:flex;gap:12px;font-size:14.5px;color:var(--c-text-2);line-height:1.7;
  padding-bottom:14px;border-bottom:1px solid var(--c-divider);
}
.compare-list li:last-child{border-bottom:0;padding-bottom:0}
.dot{width:8px;height:8px;border-radius:50%;background:var(--c-accent);flex-shrink:0;margin-top:9px}
.dot--gray{background:#CBD7E8}
.compare-list strong{color:var(--c-text);font-weight:600}

/* ===== FAQ ===== */
.faq-wrap{max-width:920px}
.faq-accordion{border:0;background:transparent}
.faq-accordion .accordion-item{
  border:1px solid var(--c-border);border-radius:14px;background:#fff;margin-bottom:12px;
  box-shadow:var(--sh-card);overflow:hidden;
}
.faq-accordion .accordion-title{
  border:0;background:transparent;padding:18px 56px 18px 22px;font-size:16px;font-weight:500;color:var(--c-text);
  line-height:1.6;
}
.faq-accordion .accordion-title:hover{background:#F8FBFF;color:var(--c-primary-dark)}
.faq-accordion .accordion-title::before{
  content:"+";left:auto;right:22px;top:50%;transform:translateY(-50%);
  width:auto;height:auto;background-image:none;font-size:20px;font-weight:400;color:var(--c-primary);margin:0;
}
.faq-accordion .accordion-item.is-active .accordion-title::before{content:"−"}
.faq-accordion .accordion-content{
  border:0;border-top:1px solid var(--c-divider);padding:16px 22px 20px;background:#fff;
  font-size:15px;color:var(--c-text-2);line-height:1.75;
}

/* ===== CTA 表单 ===== */
.cta{background:var(--c-primary-soft);border-radius:20px;padding:44px;display:grid;grid-template-columns:1fr 1.05fr;gap:40px;align-items:start}
.cta h2{font-size:28px}
.cta > div > p{margin-top:14px;color:var(--c-text-2);font-size:15px}
.cta-points{margin-top:24px;display:flex;flex-direction:column;gap:14px}
.cta-points li{display:flex;gap:12px;font-size:14.5px;color:var(--c-text-2)}
.cta-points i{color:var(--c-primary);margin-top:5px;font-size:14px}
.form-card{background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);box-shadow:var(--sh-card);padding:26px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{display:flex;flex-direction:column;gap:6px}
.field--full{grid-column:1 / -1}
.field label{font-size:13.5px;color:var(--c-text-2);font-weight:500}
.field input,.field select,.field textarea{
  width:100%;height:46px;border:1px solid var(--c-border);border-radius:var(--r-input);padding:0 14px;
  background:#fff;font-size:15px;transition:border-color var(--ease),box-shadow var(--ease);
}
.field textarea{height:auto;min-height:110px;padding:12px 14px;resize:vertical;line-height:1.7}
.field select{appearance:none;background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath fill='%234A5A73' d='M6 8 0 0h12z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 16px center}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(27,95,217,.15);
}
.field-error{font-size:12px;color:var(--c-down);display:none}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:var(--c-down)}
.field.has-error .field-error{display:block}
.form-note{margin-top:14px;font-size:12.5px;color:var(--c-text-3)}
.form-success{display:none;margin-top:16px;padding:12px 16px;border-radius:10px;background:#E9F8F1;color:#0B7A4D;font-size:14px}
.form-success.is-visible{display:block}

/* ===== 页脚 ===== */
.site-footer{background:#fff;border-top:1px solid var(--c-border);padding:56px 0 26px;margin-top:20px;flex-shrink:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px}
.footer-brand .brand-name{font-size:17px;font-weight:700;color:var(--c-text);display:block;margin-bottom:12px}
.footer-brand p{font-size:14px;color:var(--c-text-2);line-height:1.75;max-width:340px}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--c-text);font-weight:600}
.footer-col li{margin-bottom:10px;font-size:14px;color:var(--c-text-2);line-height:1.7}
.footer-col a{color:var(--c-text-2)}
.footer-col a:hover{color:var(--c-primary);text-decoration:underline}
.footer-bottom{
  margin-top:36px;padding-top:20px;border-top:1px solid var(--c-divider);
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:13px;color:var(--c-text-3);
}

/* ===== 响应式 ===== */
@media (min-width:1024px) and (max-width:1199px){
  :root{--sidebar-w:76px}
  .sidebar{padding:0 12px 16px;align-items:stretch}
  .brand{justify-content:center;padding:0}
  .brand-text{display:none}
  .nav-item{justify-content:center;padding:0;height:46px}
  .nav-item span{
    position:absolute;left:62px;top:50%;transform:translateY(-50%);
    background:var(--c-text);color:#fff;font-size:13px;font-weight:500;padding:6px 12px;border-radius:8px;
    opacity:0;pointer-events:none;transition:opacity 150ms ease-out;white-space:nowrap;z-index:80;
  }
  .nav-item:hover span{opacity:1}
  .nav-item.is-active::before{top:12px;bottom:12px}
  .side-cta{display:none}
  .container{padding:0 28px}
  .page-hero h1{font-size:34px}
  .scene-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:1023px){
  .sidebar{
    transform:translateX(-100%);transition:transform 240ms ease-out;width:280px;box-shadow:0 20px 50px rgba(15,27,45,.2);
    padding-top:8px;
  }
  .sidebar.is-open{transform:translateX(0)}
  .mobile-bar{display:flex}
  .app-main{margin-left:0;padding-top:56px}
  .container{padding:0 28px}
  .page-hero{padding:22px 0 20px}
  .page-hero h1{font-size:32px}
  .section{padding:56px 0}
  .section--tight{padding:48px 0}
  .check-grid{grid-template-columns:1fr}
  .cta{grid-template-columns:1fr;padding:32px}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .page-hero h1{font-size:28px}
  .hero-sub{font-size:15.5px}
  .section-head h2{font-size:23px}
  .scene-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .compare{grid-template-columns:1fr}
  .form-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;gap:8px}
  .hero-actions .btn{flex:1 1 auto}
  .cta{padding:24px}
}
@media (max-width:520px){
  .brand-name{font-size:14px}
  .btn{height:44px;padding:0 18px;font-size:14.5px}
  .chip{height:36px;padding:0 14px;font-size:13.5px}
  .section{padding:46px 0}
}

/* roulang page: category2 */
:root{
      --primary:#1B5FD9;
      --primary-dark:#0E3F9E;
      --primary-light:#E8F0FE;
      --accent:#FF7A18;
      --bg:#F5F8FC;
      --card:#FFFFFF;
      --border:#E3EAF4;
      --divider:#EDF2F8;
      --text:#0F1B2D;
      --text-2:#4A5A73;
      --text-3:#8494AB;
      --up:#12A76B;
      --down:#E0483C;
      --r-card:16px;
      --r-btn:10px;
      --r-input:10px;
      --shadow-card:0 1px 2px rgba(15,27,45,.04), 0 8px 24px rgba(15,27,45,.06);
      --shadow-hover:0 2px 4px rgba(15,27,45,.06), 0 14px 32px rgba(15,27,45,.10);
      --sidebar-w:248px;
      --sidebar-w-narrow:76px;
    }

    /* ============ 基础重置 ============ */
    *,*::before,*::after{box-sizing:border-box;}
    html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
    body{
      margin:0;
      font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
      font-size:16px;
      line-height:1.75;
      color:var(--text);
      background:var(--bg);
      -webkit-font-smoothing:antialiased;
    }
    img{max-width:100%;height:auto;display:block;}
    a{color:inherit;text-decoration:none;transition:color 140ms ease-out;}
    button,input,select,textarea{font:inherit;color:inherit;}
    ul,ol{margin:0;padding:0;list-style:none;}
    h1,h2,h3,h4{margin:0;line-height:1.35;font-weight:700;}
    p{margin:0 0 16px;}
    p:last-child{margin-bottom:0;}
    :focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px;}

    /* ============ 容器与通用组件 ============ */
    .container{width:100%;max-width:1280px;margin:0 auto;padding:0 40px;}
    .section{padding:72px 0;}
    .section-sm{padding:48px 0;}
    .section-head{margin-bottom:32px;}
    .section-head h2{font-size:28px;letter-spacing:.2px;}
    .section-head p{font-size:15px;color:var(--text-2);margin-top:10px;max-width:760px;}
    .eyebrow{
      display:inline-flex;align-items:center;gap:8px;
      font-size:12px;font-weight:600;letter-spacing:.6px;
      color:var(--primary-dark);background:var(--primary-light);
      padding:6px 12px;border-radius:999px;margin-bottom:14px;
    }
    .eyebrow i{font-size:11px;color:var(--primary);}

    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      height:46px;padding:0 22px;border-radius:var(--r-btn);
      font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
      cursor:pointer;transition:background 180ms ease-out,color 180ms ease-out,box-shadow 180ms ease-out,transform 180ms ease-out,border-color 180ms ease-out;
      white-space:nowrap;
    }
    .btn-primary{background:var(--primary);color:#fff;box-shadow:0 6px 16px rgba(27,95,217,.22);}
    .btn-primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-2px);box-shadow:0 10px 22px rgba(14,63,158,.26);}
    .btn-primary:active{background:#0A3078;transform:translateY(0);box-shadow:0 4px 10px rgba(14,63,158,.22);}
    .btn-accent{background:var(--accent);color:#fff;box-shadow:0 6px 16px rgba(255,122,24,.24);}
    .btn-accent:hover{background:#E96A0C;color:#fff;transform:translateY(-2px);box-shadow:0 10px 22px rgba(233,106,12,.28);}
    .btn-accent:active{background:#D05F09;transform:translateY(0);}
    .btn-ghost{background:#fff;color:var(--primary-dark);border-color:#C9DCF8;}
    .btn-ghost:hover{background:var(--primary-light);border-color:var(--primary);color:var(--primary-dark);transform:translateY(-2px);}
    .btn-ghost:active{background:#D9E7FD;transform:translateY(0);}
    .btn-sm{height:38px;padding:0 16px;font-size:14px;}
    .btn-block{width:100%;}

    .badge{
      display:inline-flex;align-items:center;gap:6px;
      font-size:12px;font-weight:600;line-height:1;
      padding:6px 10px;border-radius:999px;
      background:var(--primary-light);color:var(--primary-dark);
    }
    .badge-muted{background:#F0F4FA;color:var(--text-2);}
    .badge-up{background:rgba(18,167,107,.12);color:var(--up);}
    .dot-orange{width:7px;height:7px;border-radius:50%;background:var(--accent);display:inline-block;flex:0 0 auto;}

    .chip-bar{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
    .chip{
      display:inline-flex;align-items:center;gap:8px;
      height:38px;padding:0 16px;border-radius:999px;
      background:#fff;border:1px solid var(--border);
      font-size:14px;font-weight:500;color:var(--text-2);
      transition:all 160ms ease-out;
    }
    .chip:hover{border-color:#C9DCF8;color:var(--primary-dark);background:#F7FAFF;transform:translateY(-1px);}
    .chip.is-active{background:var(--primary);border-color:var(--primary);color:#fff;box-shadow:0 6px 14px rgba(27,95,217,.22);}

    /* ============ 左侧导航 App Shell ============ */
    .sidebar{
      position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
      background:#fff;border-right:1px solid var(--border);
      display:flex;flex-direction:column;padding:0 16px 20px;z-index:60;
    }
    .sidebar-logo{height:72px;display:flex;flex-direction:column;justify-content:center;gap:2px;}
    .sidebar-logo .logo{font-size:17px;font-weight:700;color:var(--primary-dark);letter-spacing:.2px;line-height:1.3;}
    .sidebar-logo .logo:hover{color:var(--primary);}
    .sidebar-logo .logo-sub{font-size:12px;color:var(--text-3);line-height:1.4;}
    .side-nav{display:flex;flex-direction:column;gap:6px;margin-top:10px;}
    .nav-item{
      position:relative;display:flex;align-items:center;gap:12px;
      height:44px;padding:0 12px;border-radius:10px;
      font-size:15px;color:var(--text-2);
      transition:background 120ms ease-out,color 120ms ease-out;
    }
    .nav-item i{width:20px;text-align:center;font-size:16px;color:var(--text-3);transition:color 120ms ease-out;}
    .nav-item:hover{background:#F2F6FD;color:var(--text);}
    .nav-item.is-active{background:var(--primary-light);color:var(--primary-dark);font-weight:600;}
    .nav-item.is-active i{color:var(--primary);}
    .nav-item.is-active::before{
      content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;
      border-radius:0 3px 3px 0;background:var(--primary);
    }
    .side-cta{margin-top:auto;background:var(--primary-light);border-radius:12px;padding:16px;}
    .side-cta h3{font-size:14px;color:var(--primary-dark);margin-bottom:8px;}
    .side-cta p{font-size:13px;line-height:1.65;color:var(--text-2);margin-bottom:12px;}

    .drawer-mask{
      position:fixed;inset:0;background:rgba(15,27,45,.45);
      opacity:0;visibility:hidden;transition:opacity 220ms ease-out,visibility 220ms ease-out;z-index:85;
    }
    .drawer-mask.is-open{opacity:1;visibility:visible;}

    .mobile-bar{
      display:none;height:56px;align-items:center;justify-content:space-between;gap:12px;
      padding:0 16px;background:#fff;border-bottom:1px solid var(--border);
      position:sticky;top:0;z-index:70;
    }
    .mobile-bar .bar-logo{font-size:15px;font-weight:700;color:var(--primary-dark);}
    .icon-btn{
      width:38px;height:38px;display:inline-flex;align-items:center;justify-content:center;
      border:1px solid var(--border);border-radius:10px;background:#fff;color:var(--text-2);cursor:pointer;
      transition:all 140ms ease-out;
    }
    .icon-btn:hover{color:var(--primary);border-color:#C9DCF8;background:#F7FAFF;}

    .main-area{margin-left:var(--sidebar-w);min-height:100vh;display:flex;flex-direction:column;}

    /* ============ 页头 ============ */
    .page-hero{
      background:#fff;border-bottom:1px solid var(--border);
      padding:28px 0 34px;position:relative;overflow:hidden;
    }
    .page-hero::after{
      content:"";position:absolute;inset:0;pointer-events:none;
      background-image:linear-gradient(var(--divider) 1px,transparent 1px),linear-gradient(90deg,var(--divider) 1px,transparent 1px);
      background-size:56px 56px;opacity:.55;
      -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.5),transparent 78%);
      mask-image:linear-gradient(180deg,rgba(0,0,0,.5),transparent 78%);
    }
    .page-hero .container{position:relative;z-index:1;}
    .breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--text-3);margin-bottom:22px;}
    .breadcrumb a:hover{color:var(--primary);}
    .breadcrumb .sep{color:#C2CEE0;}
    .hero-grid{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(0,1fr);gap:52px;align-items:center;}
    .hero-copy h1{font-size:40px;line-height:1.25;letter-spacing:-.4px;}
    .hero-copy h1 em{font-style:normal;color:var(--primary);}
    .hero-lead{font-size:16px;color:var(--text-2);margin-top:16px;max-width:640px;}
    .hero-thumb{
      border-radius:20px;overflow:hidden;box-shadow:var(--shadow-card);
      aspect-ratio:16/11;background:var(--primary-light);
    }
    .hero-thumb img{width:100%;height:100%;object-fit:cover;}

    /* ============ 步骤列表 ============ */
    .step-col{padding-right:8px;}
    .step-list{display:flex;flex-direction:column;gap:14px;}
    .step-item{
      display:flex;align-items:flex-start;gap:18px;
      background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
      padding:20px 22px;box-shadow:var(--shadow-card);
      transition:transform 180ms ease-out,box-shadow 180ms ease-out,border-color 180ms ease-out;
    }
    .step-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:#D3E0F4;}
    .step-num{
      flex:0 0 42px;height:42px;border-radius:12px;
      background:var(--primary-light);color:var(--primary-dark);
      display:flex;align-items:center;justify-content:center;
      font-size:15px;font-weight:700;font-variant-numeric:tabular-nums;
    }
    .step-body{flex:1 1 auto;min-width:0;}
    .step-body h3{font-size:17px;margin-bottom:6px;}
    .step-body p{font-size:14px;line-height:1.7;color:var(--text-2);margin:0;}
    .step-arrow{flex:0 0 auto;color:#B9C8DC;font-size:14px;padding-top:12px;transition:color 180ms ease-out,transform 180ms ease-out;}
    .step-item:hover .step-arrow{color:var(--primary);transform:translateX(3px);}

    /* ============ 右侧面板 ============ */
    .side-panel{position:sticky;top:24px;display:flex;flex-direction:column;gap:20px;}
    .panel{
      background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
      padding:22px;box-shadow:var(--shadow-card);
    }
    .panel h3{font-size:16px;margin-bottom:6px;}
    .panel .panel-sub{font-size:13px;color:var(--text-3);margin-bottom:16px;}
    .panel-list li + li{border-top:1px solid var(--divider);}
    .panel-list a{
      display:flex;align-items:center;justify-content:space-between;gap:10px;
      padding:12px 2px;font-size:14px;color:var(--text-2);
      transition:color 140ms ease-out,padding-left 140ms ease-out;
    }
    .panel-list a:hover{color:var(--primary);padding-left:6px;}
    .panel-list a i{font-size:12px;color:#B9C8DC;transition:color 140ms ease-out;}
    .panel-list a:hover i{color:var(--primary);}
    .panel-cta{background:linear-gradient(180deg,#F3F7FE,#E8F0FE);border-color:#D6E4FB;}
    .panel-cta h3{color:var(--primary-dark);}
    .panel-cta p{font-size:14px;color:var(--text-2);margin:10px 0 16px;line-height:1.7;}
    .panel-note{
      display:flex;gap:10px;align-items:flex-start;
      font-size:13px;color:var(--text-2);line-height:1.7;
      background:#F7FAFF;border:1px solid #E4EEFC;border-radius:12px;padding:14px;
    }
    .panel-note i{color:var(--primary);margin-top:4px;font-size:13px;}

    /* ============ 环境适配 ============ */
    .env-grid{margin-top:8px;}
    .env-card{
      height:100%;background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
      padding:24px;box-shadow:var(--shadow-card);
      transition:transform 180ms ease-out,box-shadow 180ms ease-out;
    }
    .env-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);}
    .env-icon{
      width:44px;height:44px;border-radius:12px;background:rgba(27,95,217,.10);
      display:flex;align-items:center;justify-content:center;color:var(--primary);font-size:18px;margin-bottom:16px;
    }
    .env-card h3{font-size:18px;margin-bottom:10px;}
    .env-card p{font-size:14px;color:var(--text-2);line-height:1.75;}
    .env-list{margin-top:14px;}
    .env-list li{
      position:relative;padding-left:16px;font-size:14px;color:var(--text-2);line-height:1.75;margin-bottom:8px;
    }
    .env-list li::before{
      content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;background:var(--primary);
    }
    .env-card.is-feature{background:#fff;border-color:#C9DCF8;}
    .env-card.is-feature .env-icon{background:var(--primary);color:#fff;}
    .env-stat{
      display:flex;align-items:baseline;gap:8px;margin-top:18px;
      font-variant-numeric:tabular-nums;
    }
    .env-stat strong{font-size:32px;font-weight:700;color:var(--primary);line-height:1;}
    .env-stat span{font-size:13px;color:var(--text-3);}

    /* ============ FAQ ============ */
    .faq-wrap{max-width:960px;margin:0 auto;}
    .accordion{border:none;background:transparent;margin:0;}
    .accordion-item{
      background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
      margin-bottom:12px;box-shadow:var(--shadow-card);overflow:hidden;
    }
    .accordion-title{
      position:relative;display:block;border:none;background:#fff;
      padding:20px 56px 20px 22px;font-size:16px;font-weight:500;color:var(--text);
      transition:background 140ms ease-out,color 140ms ease-out;
    }
    .accordion-title:hover{background:#F7FAFF;color:var(--primary-dark);}
    .accordion-title::before{
      position:absolute;right:22px;top:50%;transform:translateY(-50%);
      content:"+";font-size:22px;font-weight:400;color:var(--primary);line-height:1;
    }
    .accordion-item.is-active .accordion-title{color:var(--primary-dark);background:#F7FAFF;}
    .accordion-item.is-active .accordion-title::before{content:"−";}
    .accordion-content{
      display:none;border:none;border-top:1px solid var(--divider);
      padding:16px 22px 20px;background:#fff;color:var(--text-2);
      font-size:15px;line-height:1.75;
    }
    .accordion-content.is-open{display:block;}
    .accordion-content p{margin:0 0 12px;}
    .accordion-content p:last-child{margin-bottom:0;}

    /* ============ CTA ============ */
    .cta-panel{
      position:relative;overflow:hidden;
      background:#fff;border:1px solid var(--border);border-radius:20px;
      padding:44px 48px;box-shadow:var(--shadow-card);
      display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);gap:40px;align-items:center;
    }
    .cta-panel::before{
      content:"";position:absolute;right:-120px;top:-120px;width:340px;height:340px;border-radius:50%;
      background:radial-gradient(circle,rgba(27,95,217,.12),rgba(27,95,217,0) 70%);
    }
    .cta-copy{position:relative;z-index:1;}
    .cta-copy h2{font-size:28px;margin-bottom:14px;}
    .cta-copy p{font-size:15px;color:var(--text-2);max-width:640px;}
    .cta-points{margin-top:20px;display:flex;flex-direction:column;gap:12px;}
    .cta-points li{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--text-2);}
    .cta-points i{color:var(--primary);font-size:14px;margin-top:5px;}
    .cta-actions{position:relative;z-index:1;display:flex;flex-direction:column;gap:12px;}
    .cta-actions .btn{width:100%;}
    .cta-hint{font-size:13px;color:var(--text-3);text-align:center;}

    /* ============ 页脚 ============ */
    .site-footer{background:#fff;border-top:1px solid var(--border);padding:56px 0 0;margin-top:auto;}
    .footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.2fr;gap:40px;}
    .footer-brand .brand-name{font-size:17px;font-weight:700;color:var(--primary-dark);}
    .footer-brand p{font-size:14px;color:var(--text-2);line-height:1.75;margin-top:12px;max-width:360px;}
    .footer-col h4{font-size:15px;font-weight:600;margin-bottom:14px;color:var(--text);}
    .footer-col ul li{font-size:14px;color:var(--text-2);margin-bottom:10px;line-height:1.7;}
    .footer-col a{color:var(--text-2);}
    .footer-col a:hover{color:var(--primary);text-decoration:underline;}
    .footer-bottom{
      margin-top:40px;border-top:1px solid var(--divider);
      padding:18px 0 26px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;
      font-size:13px;color:var(--text-3);
    }

    /* ============ 响应式：1024–1199 ============ */
    @media (min-width:1024px) and (max-width:1199px){
      .sidebar{width:var(--sidebar-w-narrow);padding:0 12px 16px;}
      .sidebar-logo{height:64px;align-items:center;text-align:center;}
      .sidebar-logo .logo{font-size:11px;letter-spacing:0;word-break:break-all;line-height:1.3;}
      .sidebar-logo .logo-sub{display:none;}
      .nav-item{justify-content:center;padding:0;gap:0;}
      .nav-item span{display:none;}
      .nav-item i{font-size:18px;}
      .nav-item:hover::after{
        content:attr(data-label);position:absolute;left:calc(100% + 10px);top:50%;transform:translateY(-50%);
        background:#0F1B2D;color:#fff;font-size:13px;font-weight:400;line-height:1;
        padding:8px 10px;border-radius:8px;white-space:nowrap;z-index:80;
      }
      .side-cta{display:none;}
      .main-area{margin-left:var(--sidebar-w-narrow);}
      .container{padding:0 28px;}
    }

    /* ============ 响应式：<1024 ============ */
    @media (max-width:1023px){
      .sidebar{
        width:280px;padding:0 16px 24px;top:0;bottom:0;
        transform:translateX(-100%);transition:transform 220ms ease-out;
        z-index:90;overflow-y:auto;
      }
      .sidebar.is-open{transform:translateX(0);}
      .sidebar-logo{height:66px;align-items:flex-start;text-align:left;}
      .sidebar-logo .logo{font-size:16px;word-break:normal;}
      .sidebar-logo .logo-sub{display:block;}
      .nav-item{justify-content:flex-start;padding:0 12px;gap:12px;}
      .nav-item span{display:inline;}
      .side-cta{display:block;margin-top:26px;}
      .main-area{margin-left:0;}
      .mobile-bar{display:flex;}
      .container{padding:0 28px;}
      .section{padding:56px 0;}
      .hero-grid{grid-template-columns:1fr;gap:28px;}
      .hero-copy h1{font-size:32px;}
      .hero-thumb{aspect-ratio:16/9;border-radius:16px;}
      .side-panel{position:static;}
      .cta-panel{grid-template-columns:1fr;padding:34px 28px;gap:26px;}
      .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
    }

    /* ============ 响应式：<768 ============ */
    @media (max-width:767px){
      body{font-size:15px;}
      .container{padding:0 16px;}
      .section{padding:48px 0;}
      .section-head h2{font-size:22px;}
      .page-hero{padding:20px 0 26px;}
      .hero-copy h1{font-size:28px;}
      .hero-lead{font-size:15px;}
      .hero-thumb{aspect-ratio:16/10;}
      .chip-bar{gap:8px;margin-top:20px;}
      .chip{height:34px;padding:0 13px;font-size:13px;}
      .step-item{padding:16px;gap:14px;border-radius:14px;}
      .step-num{flex:0 0 36px;height:36px;border-radius:10px;font-size:14px;}
      .step-body h3{font-size:16px;}
      .step-arrow{display:none;}
      .cta-copy h2{font-size:22px;}
      .cta-panel{padding:28px 20px;border-radius:16px;}
      .accordion-title{padding:16px 48px 16px 16px;font-size:15px;}
      .accordion-title::before{right:16px;}
      .accordion-content{padding:14px 16px 18px;font-size:14px;}
      .footer-grid{grid-template-columns:1fr;gap:28px;}
      .footer-bottom{flex-direction:column;align-items:flex-start;}
      .env-card{padding:20px;}
      .panel{padding:18px;}
    }

    @media (max-width:520px){
      .hero-copy h1{font-size:24px;letter-spacing:-.2px;}
      .section-head h2{font-size:20px;}
      .mobile-bar .bar-logo{font-size:14px;}
      .btn{height:44px;padding:0 18px;font-size:14px;}
    }

/* roulang page: category3 */
:root{
  --primary:#1B5FD9;
  --primary-dark:#0E3F9E;
  --primary-light:#E8F0FE;
  --accent:#FF7A18;
  --bg:#F5F8FC;
  --card:#FFFFFF;
  --border:#E3EAF4;
  --divider:#EDF2F8;
  --text:#0F1B2D;
  --text-2:#4A5A73;
  --text-3:#8494AB;
  --up:#12A76B;
  --down:#E0483C;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-sm:12px;
  --shadow-card:0 1px 2px rgba(15,27,45,.04),0 8px 24px rgba(15,27,45,.06);
  --shadow-hover:0 2px 4px rgba(15,27,45,.04),0 14px 32px rgba(15,27,45,.10);
  --container:1280px;
  --gutter:40px;
  --sidebar-w:248px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.75;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
img{max-width:100%;display:block;border:0;background:var(--primary-light)}
a{color:var(--primary);text-decoration:none;transition:color .18s ease-out}
a:hover{color:var(--primary-dark)}
button,input,select,textarea{font-family:inherit;font-size:inherit;line-height:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
figure{margin:0}
section[id]{scroll-margin-top:84px}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 var(--gutter)}

/* ---------- App Shell ---------- */
.app-shell{display:flex;min-height:100vh;align-items:stretch}

.sidebar{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--sidebar-w);
  background:#fff;
  border-right:1px solid var(--border);
  padding:0 14px 20px;
  display:flex;
  flex-direction:column;
  overflow-y:auto;
  z-index:60;
}
.sidebar-brand{
  display:flex;
  align-items:center;
  gap:10px;
  height:72px;
  flex:0 0 72px;
  color:var(--text);
}
.sidebar-brand:hover{color:var(--text)}
.brand-mark{
  width:36px;height:36px;flex:0 0 36px;
  border-radius:10px;
  background:var(--primary);
  color:#fff;
  display:grid;place-items:center;
  font-size:15px;font-weight:700;
  letter-spacing:0;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;min-width:0}
.brand-text strong{font-size:14px;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.brand-text em{font-style:normal;font-size:11px;color:var(--text-3);letter-spacing:.02em;margin-top:2px}

.side-nav{display:flex;flex-direction:column;gap:4px;margin-top:10px}
.nav-item{
  position:relative;
  display:flex;align-items:center;gap:12px;
  height:44px;padding:0 12px;
  border-radius:10px;
  color:var(--text-2);
  font-size:15px;
  transition:background .12s ease-out,color .12s ease-out;
}
.nav-item i{font-size:16px;width:20px;text-align:center;color:var(--text-3);transition:color .12s ease-out}
.nav-item:hover{background:#F2F6FC;color:var(--text)}
.nav-item:hover i{color:var(--primary)}
.nav-item.is-active{background:var(--primary-light);color:var(--primary);font-weight:600}
.nav-item.is-active i{color:var(--primary)}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;
  border-radius:0 3px 3px 0;background:var(--primary);
}
.nav-item:focus-visible{outline:3px solid rgba(27,95,217,.28);outline-offset:2px}

.sidebar-cta{
  margin-top:auto;
  background:var(--primary-light);
  border-radius:var(--radius-sm);
  padding:16px;
  display:flex;flex-direction:column;gap:12px;
}
.sidebar-cta p{font-size:13px;line-height:1.65;color:var(--primary-dark)}

.main-area{
  margin-left:var(--sidebar-w);
  flex:1 1 auto;
  min-width:0;
  display:flex;flex-direction:column;
}

.topbar{display:none}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;
  border-radius:var(--radius-btn);
  border:1px solid transparent;
  font-size:15px;font-weight:600;
  cursor:pointer;
  white-space:nowrap;
  transition:background .18s ease-out,color .18s ease-out,border-color .18s ease-out,box-shadow .18s ease-out,transform .18s ease-out;
}
.btn i{font-size:14px}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:9px}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 6px 16px rgba(27,95,217,.22)}
.btn-primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-2px);box-shadow:0 10px 24px rgba(27,95,217,.28)}
.btn-primary:active{background:#0A3181;transform:translateY(0);box-shadow:0 4px 10px rgba(27,95,217,.24)}
.btn-ghost{background:#fff;color:var(--primary);border-color:#C9DBF8}
.btn-ghost:hover{background:var(--primary-light);color:var(--primary-dark);border-color:var(--primary);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0);background:#DCE8FC}
.btn-block{width:100%}
.btn:focus-visible{outline:3px solid rgba(27,95,217,.30);outline-offset:2px}

.link-arrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14px;font-weight:600;color:var(--primary);
}
.link-arrow i{font-size:12px;transition:transform .18s ease-out}
.link-arrow:hover i{transform:translateX(4px)}

/* ---------- Badges / Tags ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:28px;padding:0 12px;
  border-radius:999px;
  background:var(--primary-light);
  color:var(--primary-dark);
  font-size:12px;font-weight:600;
  letter-spacing:.02em;
}
.tag{
  display:inline-block;
  padding:3px 11px;
  border-radius:999px;
  font-size:12px;font-weight:600;
  color:var(--primary);
  background:var(--primary-light);
}

/* ---------- Breadcrumb ---------- */
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:18px}
.breadcrumb a{color:var(--text-3)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:#C3CEE0}

/* ---------- Page Hero ---------- */
.page-hero{
  position:relative;
  background:#EFF5FF;
  border-bottom:1px solid var(--border);
  padding:36px 0 60px;
  overflow:hidden;
}
.page-hero::before{
  content:"";
  position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(27,95,217,.075) 1px,transparent 1px),
    linear-gradient(90deg,rgba(27,95,217,.075) 1px,transparent 1px);
  background-size:56px 56px;
  -webkit-mask-image:linear-gradient(180deg,#000 0%,rgba(0,0,0,.15) 78%,transparent 100%);
  mask-image:linear-gradient(180deg,#000 0%,rgba(0,0,0,.15) 78%,transparent 100%);
  pointer-events:none;
}
.hero-inner{
  position:relative;
  display:grid;
  grid-template-columns:minmax(0,1.12fr) minmax(0,.88fr);
  gap:48px;
  align-items:center;
}
.hero-copy h1{
  font-size:40px;
  line-height:1.25;
  letter-spacing:-.02em;
  margin:16px 0 18px;
}
.hero-copy h1 em{font-style:normal;color:var(--primary)}
.hero-lead{font-size:16px;color:var(--text-2);max-width:580px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-figure{
  border-radius:20px;
  overflow:hidden;
  border:1px solid #fff;
  box-shadow:var(--shadow-card);
  aspect-ratio:16/10;
  background:var(--primary-light);
}
.hero-figure img{width:100%;height:100%;object-fit:cover}
.anchor-bar{position:relative;display:flex;flex-wrap:wrap;gap:10px;margin-top:32px}
.anchor-bar a{
  display:inline-flex;align-items:center;gap:8px;
  height:36px;padding:0 16px;
  border-radius:999px;
  background:#fff;
  border:1px solid var(--border);
  font-size:14px;
  color:var(--text-2);
  transition:border-color .18s ease-out,color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out;
}
.anchor-bar a i{font-size:11px;color:var(--text-3);transition:color .18s ease-out}
.anchor-bar a:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px);box-shadow:0 6px 16px rgba(15,27,45,.07)}
.anchor-bar a:hover i{color:var(--primary)}

/* ---------- Sections ---------- */
.section{padding:80px 0}
.section-alt{background:#fff;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.section-head{max-width:720px;margin-bottom:40px}
.section-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;color:var(--primary);
  letter-spacing:.06em;margin-bottom:12px;
}
.section-eyebrow::before{content:"";width:18px;height:2px;border-radius:2px;background:var(--primary)}
.section-head h2{font-size:28px}
.section-head p{margin-top:14px;font-size:15px;color:var(--text-2)}

/* ---------- Big Cards ---------- */
.cards-grid > .cell{display:flex}
.cards-grid > .cell > *{width:100%}
.big-card{
  display:flex;flex-direction:column;
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-card);
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.big-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:#D3E1F6}
.big-card-media{aspect-ratio:16/9;overflow:hidden;background:var(--primary-light)}
.big-card-media img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease-out}
.big-card:hover .big-card-media img{transform:scale(1.04)}
.big-card-body{display:flex;flex-direction:column;gap:12px;padding:24px 26px 28px;flex:1 1 auto}
.big-card-body h3{font-size:20px}
.big-card-body > p{font-size:15px;color:var(--text-2)}

.dot-list{display:flex;flex-direction:column;gap:8px}
.dot-list li{position:relative;padding-left:18px;font-size:14px;color:var(--text-2)}
.dot-list li::before{
  content:"";position:absolute;left:2px;top:9px;
  width:6px;height:6px;border-radius:50%;background:var(--primary);
}
.big-card .link-arrow{margin-top:auto;padding-top:8px}

/* ---------- Index List ---------- */
.index-list{border-top:1px solid var(--divider)}
.index-item{
  display:flex;align-items:flex-start;gap:20px;
  padding:22px 10px;
  border-bottom:1px solid var(--divider);
  border-radius:10px;
  transition:transform .18s ease-out,background .18s ease-out;
}
.index-item:hover{transform:translateX(6px);background:#F7FAFF}
.index-num{
  flex:0 0 42px;
  font-size:14px;font-weight:700;
  color:var(--text-3);
  padding-top:3px;
  letter-spacing:.04em;
  transition:color .18s ease-out;
}
.index-item:hover .index-num{color:var(--primary)}
.index-body{flex:1 1 auto;min-width:0}
.index-body h3{font-size:17px;margin-bottom:6px;transition:color .18s ease-out}
.index-item:hover .index-body h3{color:var(--primary)}
.index-body p{font-size:14px;color:var(--text-2)}
.index-item > i{padding-top:6px;font-size:13px;color:#C3CEE0;transition:color .18s ease-out,transform .18s ease-out}
.index-item:hover > i{color:var(--primary);transform:translateX(3px)}

/* ---------- Rhythm Strip ---------- */
.rhythm-grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-card);
}
.rhythm-item{padding:28px 24px;border-right:1px solid var(--divider)}
.rhythm-item:last-child{border-right:none}
.rhythm-item span{
  display:block;
  font-size:12px;font-weight:700;
  color:var(--primary);
  letter-spacing:.06em;
  margin-bottom:10px;
}
.rhythm-item h3{font-size:16px;margin-bottom:8px}
.rhythm-item p{font-size:14px;color:var(--text-2)}

/* ---------- FAQ ---------- */
.faq-list{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-card);
}
.faq-item{border-bottom:1px solid var(--divider)}
.faq-item:last-child{border-bottom:none}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;
  cursor:pointer;
  font-size:16px;font-weight:500;
  list-style:none;
  transition:background .18s ease-out,color .18s ease-out;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::marker{content:""}
.faq-item summary::after{
  content:"+";
  flex:0 0 auto;
  font-size:22px;font-weight:400;line-height:1;
  color:var(--primary);
  transition:transform .18s ease-out;
}
.faq-item[open] summary::after{content:"−"}
.faq-item summary:hover{background:#F7FAFF}
.faq-item summary:focus-visible{outline:3px solid rgba(27,95,217,.25);outline-offset:-3px}
.faq-item[open] summary{color:var(--primary)}
.faq-answer{padding:0 24px 22px;font-size:15px;line-height:1.75;color:var(--text-2);max-width:900px}

/* ---------- CTA / Form ---------- */
.cta-band{
  background:var(--primary-dark);
  border-radius:24px;
  padding:48px;
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,440px);
  gap:48px;
  align-items:start;
  box-shadow:0 24px 60px rgba(14,63,158,.20);
}
.cta-copy h2{font-size:28px;color:#fff;margin-bottom:16px}
.cta-copy > p{font-size:15px;color:rgba(255,255,255,.78);max-width:520px}
.cta-points{margin-top:26px;display:flex;flex-direction:column;gap:14px}
.cta-points li{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:rgba(255,255,255,.86);line-height:1.7}
.cta-points i{color:var(--accent);font-size:12px;margin-top:6px;flex:0 0 auto}

.form-card{background:#fff;border-radius:var(--radius-card);padding:28px;box-shadow:0 20px 50px rgba(6,26,64,.24)}
.form-card h3{font-size:18px;margin-bottom:6px}
.form-card .form-note-top{font-size:13px;color:var(--text-3);margin-bottom:20px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;font-weight:600;color:var(--text-2);margin-bottom:7px}
.field input,
.field select,
.field textarea{
  width:100%;
  height:44px;
  padding:0 14px;
  border:1px solid var(--border);
  border-radius:var(--radius-btn);
  background:#FBFCFE;
  color:var(--text);
  font-size:14px;
  transition:border-color .18s ease-out,box-shadow .18s ease-out,background .18s ease-out;
}
.field textarea{height:auto;min-height:96px;padding:11px 14px;line-height:1.7;resize:vertical}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,#8494AB 50%),linear-gradient(135deg,#8494AB 50%,transparent 50%);background-position:calc(100% - 20px) 19px,calc(100% - 14px) 19px;background-size:6px 6px,6px 6px;background-repeat:no-repeat;padding-right:38px}
.field input:focus,
.field select:focus,
.field textarea:focus{
  outline:none;
  border-color:var(--primary);
  background:#fff;
  box-shadow:0 0 0 3px rgba(27,95,217,.15);
}
.field.is-error input,
.field.is-error select,
.field.is-error textarea{border-color:var(--down);background:#FFF8F7}
.field-error{display:none;margin-top:6px;font-size:12px;color:var(--down)}
.field.is-error .field-error{display:block}
.form-note{margin-top:12px;font-size:13px;color:var(--text-3)}
.form-note.is-ok{color:var(--up);font-weight:600}

/* ---------- Footer ---------- */
.site-footer{background:#fff;border-top:1px solid var(--border);margin-top:0;padding-top:0}
.site-footer .footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:40px;
  padding:56px 0 40px;
}
.footer-brand .brand-name{display:block;font-size:17px;font-weight:700;color:var(--text);margin-bottom:12px}
.footer-brand p{font-size:14px;color:var(--text-2);max-width:320px;line-height:1.7}
.footer-col h4{font-size:14px;font-weight:700;color:var(--text);margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col li{font-size:14px;color:var(--text-2);line-height:1.6}
.footer-col a{color:var(--text-2)}
.footer-col a:hover{color:var(--primary);text-decoration:underline}
.footer-bottom{
  border-top:1px solid var(--divider);
  padding:20px 0;
  display:flex;flex-wrap:wrap;gap:12px;
  justify-content:space-between;
  font-size:13px;color:var(--text-3);
}

/* ---------- Drawer ---------- */
.drawer-mask{
  position:fixed;inset:0;
  background:rgba(15,27,45,.45);
  opacity:0;visibility:hidden;
  transition:opacity .22s ease-out,visibility .22s ease-out;
  z-index:55;
}
.drawer-mask.is-open{opacity:1;visibility:visible}

/* ---------- Responsive ---------- */
@media (max-width:1199px){
  :root{--gutter:28px}
  .hero-inner{grid-template-columns:minmax(0,1fr) minmax(0,.8fr);gap:36px}
  .hero-copy h1{font-size:34px}
  .cta-band{grid-template-columns:1fr;padding:36px;gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr !important;gap:32px}
}

@media (min-width:1024px) and (max-width:1199px){
  :root{--sidebar-w:76px}
  .sidebar{padding:0 10px 20px;align-items:stretch}
  .sidebar-brand{justify-content:center;gap:0}
  .sidebar-brand .brand-text{display:none}
  .nav-item{justify-content:center;padding:0;gap:0}
  .nav-item span{display:none}
  .sidebar-cta{display:none}
}

@media (max-width:1023px){
  :root{--gutter:20px;--sidebar-w:280px}
  .sidebar{
    width:280px;flex-basis:280px;
    transform:translateX(-100%);
    transition:transform .24s ease-out;
    padding:0 16px 20px;
    box-shadow:0 0 40px rgba(15,27,45,.18);
  }
  .sidebar.is-open{transform:translateX(0)}
  .main-area{margin-left:0}
  .topbar{
    display:flex;align-items:center;gap:10px;
    height:56px;padding:0 16px;
    background:#fff;border-bottom:1px solid var(--border);
    position:sticky;top:0;z-index:50;
  }
  .topbar .brand-mini{
    flex:1 1 auto;text-align:center;
    font-size:15px;font-weight:700;color:var(--text);
    white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
  }
  .icon-btn{
    width:38px;height:38px;flex:0 0 38px;
    border:1px solid var(--border);
    border-radius:10px;
    background:#fff;color:var(--text-2);
    display:grid;place-items:center;
    cursor:pointer;
    transition:background .18s ease-out,color .18s ease-out,border-color .18s ease-out;
  }
  .icon-btn:hover{background:var(--primary-light);color:var(--primary);border-color:#C9DBF8}
  .icon-btn:focus-visible{outline:3px solid rgba(27,95,217,.28);outline-offset:2px}
  .topbar .btn-sm{flex:0 0 auto}
  .page-hero{padding:24px 0 44px}
  .hero-copy h1{font-size:30px;margin-top:12px}
  .section{padding:56px 0}
  .section-head{margin-bottom:28px}
}

@media (max-width:900px){
  .hero-inner{grid-template-columns:1fr;gap:28px}
  .hero-figure{aspect-ratio:16/9}
  .rhythm-grid{grid-template-columns:1fr 1fr}
  .rhythm-item:nth-child(2){border-right:none}
  .rhythm-item:nth-child(1),
  .rhythm-item:nth-child(2){border-bottom:1px solid var(--divider)}
  .topbar .btn-sm{display:none}
}

@media (max-width:767px){
  :root{--gutter:16px}
  .hero-copy h1{font-size:27px;line-height:1.3}
  .hero-lead{font-size:15px}
  .section{padding:48px 0}
  .section-head h2{font-size:22px}
  .big-card-body{padding:20px 20px 24px}
  .big-card-body h3{font-size:18px}
  .index-item{gap:14px;padding:18px 6px}
  .faq-item summary{padding:17px 18px;font-size:15px}
  .faq-answer{padding:0 18px 20px;font-size:14px}
  .cta-band{padding:26px 20px;border-radius:18px;gap:26px}
  .cta-copy h2{font-size:22px}
  .form-card{padding:20px}
  .site-footer .footer-grid{grid-template-columns:1fr !important;gap:28px;padding:40px 0 28px}
  .footer-bottom{flex-direction:column;gap:6px}
  .anchor-bar{margin-top:24px}
  .anchor-bar a{height:34px;padding:0 13px;font-size:13px}
}

@media (max-width:520px){
  .rhythm-grid{grid-template-columns:1fr}
  .rhythm-item{border-right:none !important;border-bottom:1px solid var(--divider)}
  .rhythm-item:last-child{border-bottom:none}
  .hero-actions{gap:10px}
  .hero-actions .btn{width:100%}
}