/* roulang page: index */
:root{
  --primary:#2F6DDB;
  --primary-dark:#1E52A8;
  --primary-soft:#EAF1FC;
  --accent:#F2997E;
  --accent-soft:#FDF0EA;
  --bg:#F5F8FC;
  --card:#FFFFFF;
  --border:#E7EDF5;
  --text:#1A2B3C;
  --text-2:#6B7F96;
  --placeholder:#94A5BA;
  --green:#2E9E6B;
  --red:#D96060;
  --radius-lg:20px;
  --radius-md:16px;
  --radius-sm:12px;
  --shadow-sm:0 6px 16px rgba(31,59,94,.05);
  --shadow-md:0 12px 28px rgba(31,59,94,.08);
  --shadow-hover:0 18px 36px rgba(31,59,94,.13);
  --sidebar-w:260px;
  --container-max:1280px;
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Helvetica Neue",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  background:var(--bg);
  color:var(--text);
  line-height:1.75;
  font-size:1rem;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--primary);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--primary-dark)}
button,input,select,textarea{font-family:inherit}
:focus-visible{outline:3px solid rgba(47,109,219,.35);outline-offset:2px;border-radius:4px}
.page-container{max-width:var(--container-max);margin:0 auto;padding-left:36px;padding-right:36px;position:relative}
.app-sidebar{
  position:fixed;
  left:0;top:0;bottom:0;
  width:var(--sidebar-w);
  background:#fff;
  border-right:1px solid var(--border);
  z-index:1050;
  display:flex;
  flex-direction:column;
  padding:0 18px;
}
.sidebar-brand{
  height:72px;
  display:flex;
  align-items:center;
  gap:10px;
  border-bottom:1px solid #EFF3F9;
  padding:0 6px;
  flex-shrink:0;
}
.logo-mark{
  width:36px;height:36px;
  border-radius:11px;
  background:var(--primary);
  color:#fff;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-weight:800;
  font-size:1.08rem;
  letter-spacing:-.04em;
  box-shadow:0 8px 18px rgba(47,109,219,.22);
}
.sidebar-brand .brand-text,
.offcanvas-brand .brand-text{
  font-size:1.28rem;
  font-weight:800;
  color:var(--text);
  letter-spacing:-.02em;
}
.brand-text em{font-style:normal;color:var(--primary)}
.sidebar-nav{
  padding:22px 0;
  display:flex;
  flex-direction:column;
  gap:6px;
  flex:1;
}
.sidebar-title{
  font-size:.76rem;
  letter-spacing:.16em;
  color:var(--placeholder);
  padding:0 12px 8px;
  font-weight:600;
}
.sidebar-nav .nav-link{
  min-height:44px;
  border-radius:12px;
  padding:10px 14px;
  display:flex;
  align-items:center;
  gap:12px;
  font-weight:500;
  color:#41556B;
  border:1px solid transparent;
  transition:background .2s,color .2s;
  position:relative;
}
.sidebar-nav .nav-link svg{flex-shrink:0;width:19px;height:19px}
.sidebar-nav .nav-link:hover{
  background:#F2F7FF;
  color:var(--primary);
}
.sidebar-nav .nav-link.active{
  background:var(--primary-soft);
  color:var(--primary);
  font-weight:700;
}
.sidebar-nav .nav-link.active::before{
  content:"";
  position:absolute;
  left:0;top:16px;bottom:16px;
  width:3px;
  border-radius:0 8px 8px 0;
  background:var(--primary);
}
.sidebar-foot{
  padding:16px 6px 20px;
  border-top:1px solid #EFF3F9;
  color:#8A9BB0;
  font-size:.78rem;
  line-height:1.7;
}
.mobile-topbar{
  position:sticky;
  top:0;
  z-index:1040;
  display:flex;
  align-items:center;
  height:56px;
  padding:0 16px;
  background:#fff;
  box-shadow:0 8px 24px rgba(31,59,94,.07);
}
.topbar-inner{
  width:100%;
  max-width:var(--container-max);
  margin:0 auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
}
.icon-btn{
  width:44px;height:44px;
  border:1px solid #E3EAF4;
  background:#fff;
  color:var(--text);
  border-radius:12px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  transition:.2s;
}
.icon-btn:hover{background:var(--primary-soft);color:var(--primary)}
.topbar-brand{
  font-weight:800;
  color:var(--text);
  font-size:1.15rem;
  letter-spacing:-.02em;
}
.topbar-spacer{width:44px}
.mobile-nav-canvas{width:280px}
.mobile-nav-canvas .offcanvas-header{min-height:72px;border-bottom:1px solid var(--border)}
.mobile-nav-canvas .offcanvas-brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:1.25rem;
  font-weight:800;
  color:var(--text);
}
.mobile-nav-items{display:flex;flex-direction:column;gap:6px;padding:14px 0}
.mobile-nav-items a{
  min-height:46px;
  border-radius:12px;
  display:flex;
  align-items:center;
  gap:10px;
  padding:0 14px;
  color:#41556B;
  font-weight:500;
}
.mobile-nav-items a.active{
  background:var(--primary-soft);
  color:var(--primary);
  font-weight:700;
}
.app-main{
  margin-left:var(--sidebar-w);
  min-height:70vh;
}
.app-footer{
  margin-left:var(--sidebar-w);
}
.btn-brand{
  --bs-btn-color:#fff;
  --bs-btn-bg:var(--primary);
  --bs-btn-border-color:var(--primary);
  --bs-btn-hover-color:#fff;
  --bs-btn-hover-bg:var(--primary-dark);
  --bs-btn-hover-border-color:var(--primary-dark);
  --bs-btn-active-color:#fff;
  --bs-btn-active-bg:#17457F;
  --bs-btn-active-border-color:#17457F;
  border-radius:12px;
  font-weight:600;
  padding:12px 22px;
  display:inline-flex;
  align-items:center;
  gap:8px;
  transition:background .2s,transform .2s,box-shadow .2s;
  box-shadow:0 10px 22px rgba(47,109,219,.16);
}
.btn-brand:hover{transform:translateY(-2px)}
.btn-brand:active{transform:translateY(0)}
.btn-ghost{
  --bs-btn-color:#2C3B4F;
  --bs-btn-bg:#fff;
  --bs-btn-border-color:#CFDCEA;
  --bs-btn-hover-color:var(--primary);
  --bs-btn-hover-bg:#F7FAFF;
  --bs-btn-hover-border-color:#B6CEF0;
  --bs-btn-active-color:var(--primary-dark);
  --bs-btn-active-bg:var(--primary-soft);
  --bs-btn-active-border-color:var(--primary);
  border-radius:12px;
  font-weight:600;
  padding:12px 22px;
  display:inline-flex;
  align-items:center;
  gap:8px;
  transition:.2s;
}
.btn-brand:focus-visible,.btn-ghost:focus-visible{
  outline:3px solid rgba(47,109,219,.3);
  outline-offset:2px;
}
.section{padding:80px 0}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:28px;
  margin-bottom:36px;
}
.section-kicker{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:var(--primary);
  font-weight:700;
  font-size:.82rem;
  letter-spacing:.12em;
  margin-bottom:8px;
}
.section-kicker::before{
  content:"";
  width:22px;height:3px;
  background:var(--accent);
  border-radius:99px;
}
.section-head h2,.section-head-center h2{
  font-size:2rem;
  font-weight:800;
  letter-spacing:-.02em;
  margin:0;
  color:var(--text);
  line-height:1.3;
}
.section-head p,.section-head-center p{
  color:var(--text-2);
  max-width:620px;
  margin:10px 0 0;
}
.section-link{
  font-weight:600;
  white-space:nowrap;
  padding:8px 0;
}
/* Hero */
.hero-section{
  position:relative;
  overflow:hidden;
  background:linear-gradient(180deg,#EFF5FD 0%,#FFFFFF 100%);
  padding:88px 0 60px;
}
.hero-section::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:url('/assets/images/backpic/back-1.jpg');
  background-size:cover;
  background-position:center;
  background-repeat:no-repeat;
  opacity:.08;
  pointer-events:none;
}
.hero-section .page-container{position:relative;z-index:1}
.hero-eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:var(--accent-soft);
  color:#B95F47;
  border:1px solid #F8DACC;
  font-size:.82rem;
  font-weight:600;
  padding:6px 14px;
  border-radius:99px;
  margin-bottom:20px;
}
.hero-copy h1{
  font-size:clamp(2.05rem,5vw,3rem);
  font-weight:800;
  line-height:1.18;
  color:#13263D;
  letter-spacing:-.03em;
  margin:0 0 20px;
}
.hero-sub{
  font-size:1.06rem;
  color:#51677E;
  line-height:1.85;
  max-width:630px;
  margin:0 0 28px;
}
.hero-ctas{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:24px}
.hero-mark{
  display:flex;
  flex-wrap:wrap;
  gap:22px;
  color:var(--text-2);
  font-size:.88rem;
}
.hero-mark span{display:inline-flex;align-items:center;gap:7px}
.hero-mark span::before{
  content:"";
  width:6px;height:6px;
  border-radius:99px;
  background:var(--primary);
  opacity:.65;
}
.hero-media{max-width:560px;margin-left:auto}
.guide-card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:22px;
  box-shadow:var(--shadow-hover);
  overflow:hidden;
  position:relative;
}
.guide-card::after{
  content:"";
  position:absolute;
  top:-40px;
  right:-40px;
  width:150px;height:150px;
  border-radius:99px;
  background:radial-gradient(circle,rgba(47,109,219,.09),transparent 70%);
}
.guide-cover{aspect-ratio:16/10;overflow:hidden}
.guide-cover img{width:100%;height:100%;object-fit:cover}
.guide-content{padding:24px 24px 26px;background:linear-gradient(180deg,#fff,#F8FBFF)}
.guide-tag{
  display:inline-block;
  font-size:.78rem;
  font-weight:700;
  color:var(--primary);
  background:var(--primary-soft);
  border-radius:99px;
  padding:4px 12px;
  margin-bottom:12px;
}
.guide-content h3{
  font-size:1.2rem;
  font-weight:750;
  letter-spacing:-.01em;
  line-height:1.45;
  margin-bottom:14px;
}
.guide-toc{
  list-style:none;
  padding:0;
  margin:0 0 18px;
  display:flex;
  flex-direction:column;
  gap:10px;
}
.guide-toc li{
  display:flex;
  align-items:center;
  gap:12px;
  font-size:.95rem;
  color:#3D5268;
}
.guide-toc li span{
  width:30px;height:30px;
  background:var(--primary-soft);
  border-radius:9px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-size:.78rem;
  font-weight:800;
  color:var(--primary);
  flex-shrink:0;
}
/* Metrics */
.metric-card{
  position:relative;
  height:100%;
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius-md);
  padding:26px 22px 22px;
  box-shadow:var(--shadow-sm);
  overflow:hidden;
  transition:transform .25s,box-shadow .25s;
}
.metric-card:hover{
  transform:translateY(-3px);
  box-shadow:var(--shadow-md);
}
.metric-card::before{
  content:"";
  position:absolute;
  left:0;top:0;right:0;
  height:3px;
  background:linear-gradient(90deg,var(--primary),#75A5ED);
  opacity:0;
  transition:.25s;
}
.metric-card:hover::before{opacity:1}
.metric-label{
  color:var(--primary);
  background:#F0F6FF;
  border-radius:99px;
  padding:3px 12px;
  font-size:.76rem;
  font-weight:700;
  display:inline-block;
  margin-bottom:14px;
}
.metric-value{
  font-size:2.6rem;
  line-height:1.1;
  font-weight:800;
  color:#13263D;
  letter-spacing:-.03em;
  font-variant-numeric:tabular-nums;
}
.metric-note{
  margin-top:12px;
  color:var(--text-2);
  font-size:.9rem;
}
/* Matrix */
.matrix-grid{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  grid-auto-rows:minmax(min-content,max-content);
  gap:24px;
}
.mx-card--span7{grid-column:span 7}
.mx-card--span5{grid-column:span 5}
.mx-card--wide{grid-column:span 6}
.mx-card--narrow{grid-column:span 3}
.mx-card{height:100%}
.mx-card-inner{
  display:flex;
  flex-direction:column;
  height:100%;
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-sm);
  overflow:hidden;
  transition:transform .25s,box-shadow .25s;
}
.mx-card-inner:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-hover);
}
.mx-media{
  aspect-ratio:16/10;
  overflow:hidden;
  background:var(--border);
}
.mx-card--narrow .mx-media{aspect-ratio:4/3}
.mx-media img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .45s ease;
}
.mx-card-inner:hover .mx-media img{transform:scale(1.03)}
.mx-body{
  padding:20px 22px 22px;
  display:flex;
  flex-direction:column;
  flex:1;
}
.mx-tag{
  align-self:flex-start;
  color:var(--primary);
  background:var(--primary-soft);
  font-size:.78rem;
  font-weight:700;
  border-radius:99px;
  padding:4px 13px;
  margin-bottom:12px;
}
.mx-body h3{
  font-size:1.2rem;
  font-weight:750;
  line-height:1.45;
  letter-spacing:-.01em;
  margin:0 0 8px;
}
.mx-body p{
  color:var(--text-2);
  font-size:.95rem;
  line-height:1.75;
  margin:0 0 18px;
  flex:1;
}
.mx-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-weight:700;
  font-size:.93rem;
  color:var(--primary);
  border:0;
  background:none;
  padding:4px 0;
  transition:gap .2s ease;
}
.mx-link:hover{gap:10px;color:var(--primary-dark)}
/* Compare */
.compare-section{
  background:#fff;
  border-top:1px solid var(--border);
  border-bottom:1px solid var(--border);
}
.compare-grid{
  display:grid;
  grid-template-columns:1fr 72px 1fr;
  gap:16px;
  align-items:stretch;
  position:relative;
}
.compare-card{
  background:#F7FAFC;
  border:1px solid #EAF0F6;
  border-radius:20px;
  padding:28px;
}
.compare-card--new{
  background:#F8FBFF;
  border-color:#D5E4F8;
  box-shadow:0 12px 28px rgba(47,109,219,.07);
}
.compare-card-label{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:.85rem;
  font-weight:800;
  color:#53677E;
  background:#fff;
  border:1px solid #DCE7F2;
  padding:6px 14px;
  border-radius:99px;
  margin-bottom:22px;
}
.compare-card--new .compare-card-label{
  color:var(--primary);
  background:var(--primary-soft);
  border-color:#CADEF8;
}
.compare-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:16px}
.compare-list li{
  display:flex;
  gap:11px;
  align-items:flex-start;
  font-size:.96rem;
  color:#3D5268;
  line-height:1.75;
}
.icon-badge{
  width:24px;height:24px;
  border-radius:8px;
  flex-shrink:0;
  margin-top:4px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
}
.icon-badge--no{background:#FDEBEA;color:var(--red)}
.icon-badge--yes{background:#E8F5EF;color:var(--green)}
.compare-vs{
  align-self:center;
  width:62px;height:62px;
  background:#fff;
  border:1px solid #C6DCF6;
  border-radius:99px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  color:var(--primary);
  font-weight:800;
  font-size:.9rem;
  letter-spacing:.05em;
  box-shadow:0 8px 18px rgba(31,59,94,.07);
  position:relative;
  z-index:2;
}
/* FAQ */
.faq-section{}
.faq-grid{
  display:grid;
  grid-template-columns:minmax(260px,340px) 1fr;
  gap:56px;
}
.faq-side h2{font-size:2.05rem;font-weight:800;letter-spacing:-.02em}
.faq-side p{color:var(--text-2);margin-top:14px}
.faq-accordion .accordion-item{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:16px!important;
  overflow:hidden;
  margin-bottom:14px;
  box-shadow:0 6px 14px rgba(31,59,94,.04);
}
.faq-accordion .accordion-item:has(.accordion-button:not(.collapsed)){
  border-color:#B9D3F5;
}
.faq-accordion .accordion-button{
  background:var(--card);
  color:var(--text);
  font-size:1.03rem;
  font-weight:700;
  padding:20px 22px;
  box-shadow:none;
  transition:color .2s,background .2s;
}
.faq-accordion .accordion-button:not(.collapsed){
  background:#F9FCFF;
  color:var(--primary);
}
.faq-accordion .accordion-button::after{
  content:"＋";
  background-image:none;
  width:auto;height:auto;
  font-size:1.15rem;
  color:var(--primary);
  font-weight:400;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  transition:transform .2s ease;
}
.faq-accordion .accordion-button:not(.collapsed)::after{
  content:"−";
  transform:none;
}
.faq-accordion .accordion-body{
  padding:0 22px 22px;
  color:var(--text-2);
  line-height:1.9;
}
/* CTA form */
.cta-section{
  padding:80px 0 96px;
}
.cta-panel{
  background:#fff;
  border:1px solid var(--border);
  border-radius:28px;
  box-shadow:var(--shadow-hover);
  padding:52px 52px 44px;
  position:relative;
  overflow:hidden;
}
.cta-panel::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:5px;
  background:linear-gradient(90deg,var(--primary),#9FC1F3,var(--accent));
  opacity:.75;
}
.cta-copy h2{
  font-size:1.9rem;
  font-weight:800;
  letter-spacing:-.02em;
  line-height:1.35;
  margin-bottom:16px;
}
.cta-copy p{
  color:var(--text-2);
  font-size:1rem;
  max-width:440px;
}
.cta-points{
  list-style:none;
  padding:0;
  margin:22px 0 0;
  display:flex;
  flex-direction:column;
  gap:10px;
}
.cta-points li{
  position:relative;
  padding-left:26px;
  color:#4A5F75;
}
.cta-points li::before{
  content:"";
  position:absolute;
  left:2px;top:10px;
  width:7px;height:7px;
  background:var(--accent);
  border-radius:99px;
}
.form-card{
  background:#FBFDFF;
  border:1px solid #DFEAF6;
  border-radius:22px;
  padding:28px;
}
.form-label{
  font-weight:700;
  color:var(--text);
  font-size:.9rem;
  margin-bottom:7px;
}
.form-control{
  min-height:48px;
  border:1px solid #D3DFEC;
  border-radius:12px;
  padding:11px 14px;
  background:#fff;
  font-size:.97rem;
  color:var(--text);
}
.form-control::placeholder{color:var(--placeholder)}
.form-control:focus{
  border-color:var(--primary);
  box-shadow:0 0 0 4px rgba(47,109,219,.12);
  outline:none;
}
textarea.form-control{min-height:110px;resize:vertical}
.form-success{
  display:flex;
  align-items:center;
  gap:10px;
  background:#EAF6F0;
  color:#296447;
  border-radius:12px;
  padding:12px 16px;
  font-size:.92rem;
  border:1px solid #C3E5D4;
}
/* Footer */
.app-footer{
  background:#fff;
  border-top:1px solid var(--border);
  padding-top:52px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1.3fr;
  gap:40px;
  padding-bottom:36px;
}
.footer-brand .brand-text{font-size:1.3rem;font-weight:800;color:#13263D}
.footer-brand .logo-mark{
  width:34px;height:34px;
  border-radius:10px;
  font-size:1rem;
}
.footer-desc{
  color:var(--text-2);
  font-size:.92rem;
  line-height:1.8;
  max-width:280px;
  margin-top:14px;
}
.footer-col h4{
  font-size:.9rem;
  font-weight:800;
  color:#26394F;
  margin-bottom:16px;
  letter-spacing:.04em;
}
.footer-links{
  list-style:none;
  padding:0;
  margin:0;
  display:flex;
  flex-direction:column;
  gap:4px;
}
.footer-links a{
  min-height:40px;
  display:inline-flex;
  align-items:center;
  color:#52677D;
  font-size:.95rem;
  transition:.2s;
}
.footer-links a:hover{color:var(--primary);padding-left:4px}
.footer-bottom{
  border-top:1px solid #EFF3F9;
  padding:18px 0 22px;
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:8px;
  color:#8A9BB0;
  font-size:.85rem;
}
/* responsive */
@media(min-width:992px){
  .mobile-topbar{display:none!important}
  .app-sidebar{display:flex!important}
}
@media(max-width:1199.98px){
  .matrix-grid{grid-template-columns:repeat(6,1fr)}
  .mx-card--span7,.mx-card--span5,.mx-card--wide,.mx-card--narrow{grid-column:span 6}
  .cta-panel{padding:40px 34px}
}
@media(max-width:991.98px){
  .app-sidebar{display:none!important}
  .app-main,.app-footer{margin-left:0}
  .hero-section{padding:52px 0 48px}
  .hero-media{margin:28px auto 0;max-width:540px}
  .section{padding:56px 0}
  .cta-section{padding:56px 0 72px}
  .faq-grid{grid-template-columns:1fr;gap:28px}
  .compare-grid{grid-template-columns:1fr}
  .compare-vs{margin:6px auto}
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-brand{grid-column:1/-1}
}
@media(max-width:767.98px){
  .page-container{padding-left:20px;padding-right:20px}
  .hero-copy h1{font-size:2rem}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px}
  .metric-card{padding:22px 18px}
  .matrix-grid{grid-template-columns:1fr}
  .mx-card--span7,.mx-card--span5,.mx-card--wide,.mx-card--narrow{grid-column:span 1}
  .compare-card{padding:22px}
  .cta-panel{padding:30px 20px 24px}
  .footer-grid{grid-template-columns:1fr;gap:26px;padding-bottom:24px}
  .footer-bottom{flex-direction:column;text-align:center;justify-content:center}
}

/* roulang page: category1 */
:root{
  --primary:#2F6DDB;
  --primary-dark:#1E52A8;
  --primary-soft:#EAF1FC;
  --accent:#F2997E;
  --accent-soft:#FDF0EA;
  --bg:#F5F8FC;
  --card:#FFFFFF;
  --border:#E7EDF5;
  --text:#1A2B3C;
  --text-2:#6B7F96;
  --placeholder:#94A5BA;
  --green:#2E9E6B;
  --red:#D96060;
  --radius-lg:20px;
  --radius-md:16px;
  --radius-sm:12px;
  --shadow-sm:0 6px 16px rgba(31,59,94,.05);
  --shadow-md:0 12px 28px rgba(31,59,94,.08);
  --shadow-hover:0 18px 36px rgba(31,59,94,.13);
  --sidebar-w:260px;
  --container-max:1280px;
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Helvetica Neue",sans-serif;
}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  background:var(--bg);
  color:var(--text);
  line-height:1.75;
  font-size:1rem;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.fixed-sidebar-open{overflow:hidden}
img{max-width:100%;display:block}
a{color:var(--primary);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--primary-dark)}
a:focus-visible,.btn:focus-visible,input:focus-visible,textarea:focus-visible,button:focus-visible{
  outline:3px solid rgba(47,109,219,.3);
  outline-offset:2px;
}
button,input,select,textarea{font-family:inherit}
h1,h2,h3,h4,.h1,.h2,.h3,.h4{color:var(--text);letter-spacing:-.015em}
.c-page{max-width:1184px;margin:0 auto;padding-left:36px;padding-right:36px;position:relative}

/* 桌面侧边导航 */
.app-sidebar{
  position:fixed;
  top:0;
  left:0;
  bottom:0;
  width:var(--sidebar-w);
  background:var(--card);
  border-right:1px solid var(--border);
  z-index:1030;
  padding:0 16px;
  display:flex;
  flex-direction:column;
  overflow-y:auto;
}
.sidebar-brand{
  min-height:72px;
  display:flex;
  align-items:center;
  gap:10px;
  border-bottom:1px solid #EFF3F9;
  padding:0 6px;
  flex-shrink:0;
}
.logo-mark{
  width:36px;height:36px;
  border-radius:11px;
  background:var(--primary);
  color:#fff;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-weight:800;
  font-size:1.08rem;
  letter-spacing:-.04em;
  box-shadow:0 8px 18px rgba(47,109,219,.22);
}
.sidebar-brand .brand-text,
.offcanvas-brand .brand-text{
  font-size:1.28rem;
  font-weight:800;
  color:var(--text);
  letter-spacing:-.02em;
}
.brand-text em{font-style:normal;color:var(--primary)}
.sidebar-nav{
  padding:22px 0 12px;
  display:flex;
  flex-direction:column;
  gap:6px;
  flex:1;
}
.sidebar-title{
  font-size:.76rem;
  letter-spacing:.16em;
  color:var(--placeholder);
  padding:0 12px 8px;
  font-weight:600;
  text-transform:none;
}
.sidebar-nav .nav-link{
  min-height:44px;
  border-radius:12px;
  padding:10px 14px;
  display:flex;
  align-items:center;
  gap:12px;
  font-weight:500;
  color:#41556B;
  border:1px solid transparent;
  transition:background .2s,color .2s;
  position:relative;
}
.sidebar-nav .nav-link svg{flex-shrink:0;width:19px;height:19px}
.sidebar-nav .nav-link:hover{
  background:#F2F7FF;
  color:var(--primary);
}
.sidebar-nav .nav-link.active{
  background:var(--primary-soft);
  color:var(--primary);
  font-weight:700;
}
.sidebar-nav .nav-link.active::before{
  content:"";
  position:absolute;
  left:0;
  top:16px;
  bottom:16px;
  width:3px;
  border-radius:0 8px 8px 0;
  background:var(--primary);
}
.sidebar-foot{
  padding:12px 10px 18px;
  border-top:1px solid #F0F4F9;
  font-size:.76rem;
  color:var(--placeholder);
  line-height:1.6;
  flex-shrink:0;
}

/* 移动端顶栏与抽屉 */
.mobile-topbar{
  position:sticky;
  top:0;
  z-index:1045;
  display:flex;
  align-items:center;
  height:56px;
  padding:0 16px;
  background:var(--card);
  box-shadow:0 8px 24px rgba(31,59,94,.07);
}
.topbar-inner{
  width:100%;
  max-width:var(--container-max);
  margin:0 auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
}
.icon-btn{
  width:44px;height:44px;
  border:1px solid #E3EAF4;
  background:var(--card);
  color:var(--text);
  border-radius:12px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  transition:.2s;
}
.icon-btn:hover{background:var(--primary-soft);color:var(--primary)}
.topbar-brand{
  font-weight:800;
  color:var(--text);
  font-size:1.18rem;
  letter-spacing:-.02em;
}
.topbar-brand em{font-style:normal;color:var(--primary)}
.topbar-spacer{width:44px;height:44px}
.mobile-nav-canvas{width:280px;max-width:88%}
.mobile-nav-canvas .offcanvas-header{
  min-height:72px;
  border-bottom:1px solid var(--border);
  padding:14px 16px;
  align-items:center;
}
.mobile-nav-canvas .offcanvas-brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--text);
  font-size:1.15rem;
}
.mobile-nav-canvas .btn-close{
  width:44px;
  height:44px;
  margin:0;
  border-radius:12px;
  background-position:center;
}
.mobile-nav-canvas .offcanvas-body{padding:12px 10px 16px}
.mobile-nav-items{display:flex;flex-direction:column;gap:6px;padding:14px 0}
.mobile-nav-items a{
  min-height:46px;
  border-radius:12px;
  display:flex;
  align-items:center;
  gap:10px;
  padding:0 14px;
  color:#41556B;
  font-weight:500;
  transition:.2s;
}
.mobile-nav-items a:hover{background:#F2F7FF;color:var(--primary)}
.mobile-nav-items a.active{
  background:var(--primary-soft);
  color:var(--primary);
  font-weight:700;
}
.mobile-nav-items svg{width:19px;height:19px;flex-shrink:0}
.mobile-foot{
  margin-top:auto;
  padding:16px 12px;
  border-top:1px solid #F0F4F9;
  font-size:.75rem;
  color:var(--placeholder);
}

/* 主体与页脚偏移 */
.app-main,.app-footer{margin-left:var(--sidebar-w)}
.app-main{min-height:70vh}
.app-footer{
  background:var(--card);
  border-top:1px solid var(--border);
  padding-top:0;
}
.page-container{
  max-width:var(--container-max);
  margin:0 auto;
  padding-left:36px;
  padding-right:36px;
}

/* 分类横幅 */
.cat-banner{
  position:relative;
  overflow:hidden;
  background:
    linear-gradient(135deg,rgba(255,255,255,.98) 0%,rgba(239,245,253,.94) 100%),
    url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;
  border-bottom:1px solid #E7EDF5;
  padding:56px 0 52px;
  margin-bottom:28px;
}
.breadcrumb-nav{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:.85rem;
  color:var(--text-2);
  margin-bottom:16px;
  flex-wrap:wrap;
}
.breadcrumb-nav a{color:var(--text-2);font-weight:500}
.breadcrumb-nav a:hover{color:var(--primary)}
.crumb-sep{color:var(--placeholder)}
.crumb-current{color:var(--primary);font-weight:600}
.cat-title{
  font-size:2.45rem;
  font-weight:800;
  letter-spacing:-.03em;
  margin:0 0 12px;
  line-height:1.25;
}
.cat-desc{
  max-width:760px;
  color:var(--text-2);
  font-size:1.05rem;
  margin:0;
}

/* 分类工具条 */
.filter-bar{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:10px;
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius-md);
  box-shadow:var(--shadow-sm);
  padding:14px 18px;
  margin:8px 0 30px;
}
.filter-label{
  font-weight:700;
  color:var(--text);
  margin-right:4px;
  font-size:.92rem;
}
.filter-chip{
  min-height:40px;
  padding:8px 18px;
  border-radius:999px;
  border:1px solid transparent;
  background:#F2F6FC;
  color:#3C5068;
  font-weight:600;
  font-size:.88rem;
  transition:all .2s ease;
  cursor:pointer;
  line-height:1.2;
}
.filter-chip:hover{background:#EAF1FC;color:var(--primary)}
.filter-chip.active{
  background:var(--primary);
  color:#fff;
  box-shadow:0 8px 18px rgba(47,109,219,.18);
}
.filter-note{
  width:100%;
  color:var(--placeholder);
  font-size:.78rem;
  margin:2px 0 0 2px;
}

/* 分类主体布局 */
.category-layout{padding:14px 0 70px}
.main-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  margin-bottom:20px;
  flex-wrap:wrap;
}
.section-title-sm{
  font-size:1.35rem;
  font-weight:800;
  margin:0;
  letter-spacing:-.02em;
}
.list-counter{
  color:var(--text-2);
  font-size:.86rem;
  font-weight:500;
  background:var(--primary-soft);
  color:var(--primary);
  padding:6px 14px;
  border-radius:999px;
}
.list-grid{row-gap:22px}
.cat-item[hidden]{display:none !important}
.category-card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  overflow:hidden;
  box-shadow:var(--shadow-sm);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
  height:100%;
  display:flex;
  flex-direction:column;
}
.category-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-hover);
  border-color:#D9E4F2;
}
.cover-wrap{
  position:relative;
  overflow:hidden;
  aspect-ratio:16/10;
  background:#EDF2FA;
}
.cover-img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .4s ease;
}
.category-card:hover .cover-img{transform:scale(1.03)}
.cover-badge{
  position:absolute;
  left:14px;
  top:14px;
  background:rgba(255,255,255,.94);
  color:var(--primary);
  font-size:.75rem;
  font-weight:700;
  padding:5px 12px;
  border-radius:999px;
  box-shadow:0 4px 10px rgba(31,59,94,.08);
}
.grid-card-body{
  padding:18px 20px 20px;
  display:flex;
  flex-direction:column;
  flex:1;
}
.card-cat-line{
  display:flex;
  align-items:center;
  gap:8px;
  margin-bottom:10px;
}
.card-cat{
  display:inline-flex;
  align-items:center;
  gap:5px;
  color:var(--primary);
  font-size:.78rem;
  font-weight:700;
  letter-spacing:.05em;
}
.card-cat::before{
  content:"";
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--accent);
}
.grid-card-title{
  font-size:1.12rem;
  font-weight:800;
  line-height:1.55;
  margin:0 0 8px;
  letter-spacing:-.01em;
}
.card-desc{
  color:var(--text-2);
  font-size:.91rem;
  line-height:1.7;
  margin:0 0 16px;
}
.card-meta{
  display:flex;
  align-items:center;
  gap:6px;
  margin-top:auto;
  font-size:.78rem;
  color:var(--placeholder);
}
.card-meta svg{width:14px;height:14px}

/* 分页器 */
.list-pagination{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  margin-top:34px;
  padding-top:24px;
  border-top:1px solid var(--border);
  flex-wrap:wrap;
}
.pagination-label{color:var(--text-2);font-size:.86rem}
.page-buttons{display:flex;gap:10px}
.page-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-width:42px;
  height:42px;
  padding:0 14px;
  border-radius:12px;
  border:1px solid var(--border);
  background:var(--card);
  color:var(--text-2);
  font-weight:600;
  font-size:.9rem;
  transition:.2s;
}
.page-btn:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-soft)}
.page-btn.is-current{
  background:var(--primary);
  border-color:var(--primary);
  color:#fff;
  box-shadow:0 8px 16px rgba(47,109,219,.18);
}

/* 侧栏 */
.side-col .side-card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-sm);
  padding:20px;
  margin-bottom:22px;
}
.side-card .side-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  margin-bottom:14px;
}
.side-title{
  display:inline-flex;
  align-items:center;
  gap:9px;
  font-size:1.02rem;
  font-weight:800;
  margin:0;
}
.side-title::before{
  content:"";
  width:8px;
  height:16px;
  border-radius:99px;
  background:var(--primary);
}
.side-more{
  font-size:.78rem;
  font-weight:600;
  color:var(--primary);
}
.side-more:hover{color:var(--primary-dark)}
.mini-post{
  display:flex;
  align-items:center;
  gap:14px;
  padding:10px 0;
  border-bottom:1px dashed #E6EEF7;
  min-height:0;
}
.mini-post:last-child{border-bottom:0;padding-bottom:0}
.mini-post:first-child{padding-top:0}
.mini-thumb{
  width:74px;
  height:54px;
  border-radius:12px;
  object-fit:cover;
  flex-shrink:0;
  background:#EDF2FA;
}
.mini-info{min-width:0}
.mini-title{
  font-size:.88rem;
  font-weight:700;
  color:var(--text);
  line-height:1.5;
  margin:0 0 5px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.mini-title a{color:var(--text)}
.mini-title a:hover{color:var(--primary)}
.mini-note{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:.73rem;
  color:var(--placeholder);
}
.mini-note svg{width:13px;height:13px}
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px;margin-top:2px}
.tag-link{
  display:inline-flex;
  align-items:center;
  min-height:34px;
  padding:5px 13px;
  border-radius:999px;
  background:#F4F8FD;
  color:#3C5068;
  font-size:.8rem;
  font-weight:500;
  border:1px solid transparent;
  transition:.2s;
  line-height:1.4;
}
.tag-link:hover{
  background:var(--primary);
  border-color:var(--primary);
  color:#fff;
}
.side-tip{
  background:var(--accent-soft);
  border-radius:var(--radius-md);
  padding:14px 16px;
  font-size:.82rem;
  color:#85523B;
  line-height:1.7;
  margin-top:4px;
}

/* FAQ */
.faq-section{
  padding:64px 0 72px;
  background:linear-gradient(180deg,transparent 0%,#EFF5FD 50%,transparent 100%);
}
.faq-heading h2{
  font-size:1.9rem;
  font-weight:800;
  letter-spacing:-.02em;
  margin-bottom:12px;
}
.faq-heading .lead-text{
  color:var(--text-2);
  margin-bottom:12px;
  font-size:.95rem;
}
.faq-list .accordion-item{
  border:1px solid var(--border);
  border-radius:var(--radius-md);
  background:var(--card);
  margin-bottom:12px;
  box-shadow:var(--shadow-sm);
  overflow:hidden;
}
.faq-list .accordion-button{
  background:var(--card);
  color:var(--text);
  font-weight:700;
  font-size:.98rem;
  padding:18px 20px;
  box-shadow:none;
  border-radius:0;
}
.faq-list .accordion-button::after{
  content:"+";
  background-image:none;
  font-family:var(--font);
  font-size:1.6rem;
  line-height:1;
  color:var(--primary);
  font-weight:400;
  width:auto;
  height:auto;
  transition:transform .2s ease;
}
.faq-list .accordion-button:not(.collapsed)::after{
  content:"−";
  transform:none;
}
.faq-list .accordion-button:not(.collapsed){
  color:var(--primary);
  background:var(--primary-soft);
}
.faq-list .accordion-button:focus{
  box-shadow:0 0 0 3px rgba(47,109,219,.2);
}
.faq-list .accordion-body{
  color:var(--text-2);
  font-size:.92rem;
  padding:4px 20px 20px;
  line-height:1.8;
  border-top:0;
}

/* CTA + 表单 */
.cta-section{padding:72px 0 90px}
.cta-card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:26px;
  box-shadow:var(--shadow-md);
  padding:48px;
  position:relative;
  overflow:hidden;
}
.cta-card::before{
  content:"";
  position:absolute;
  right:-90px;
  top:-90px;
  width:230px;
  height:230px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(242,153,126,.16) 0%,rgba(242,153,126,0) 70%);
  pointer-events:none;
}
.cta-intro h2{
  font-size:2rem;
  font-weight:800;
  letter-spacing:-.02em;
  margin:0 0 14px;
  line-height:1.35;
}
.cta-intro p{
  color:var(--text-2);
  font-size:1rem;
  margin:0 0 14px;
}
.cta-intro .small-note{
  color:var(--placeholder);
  font-size:.8rem;
}
.form-card{
  background:var(--bg);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  padding:26px;
}
.form-label{
  font-weight:700;
  font-size:.88rem;
  color:var(--text);
  margin-bottom:7px;
}
.form-control{
  width:100%;
  height:48px;
  border-radius:var(--radius-sm);
  border:1px solid #D3DFEC;
  background:var(--card);
  padding:11px 16px;
  font-size:.92rem;
  color:var(--text);
  transition:border-color .2s,box-shadow .2s;
}
.form-control::placeholder{color:var(--placeholder)}
.form-control:focus{
  border-color:var(--primary);
  box-shadow:0 0 0 4px rgba(47,109,219,.12);
  outline:0;
}
textarea.form-control{
  min-height:116px;
  resize:vertical;
}
.feedback-btn{
  min-height:48px;
  border-radius:12px;
  background:var(--primary);
  border:1px solid var(--primary);
  color:#fff;
  font-weight:700;
  padding:12px 22px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  width:100%;
  transition:background .2s,transform .2s,box-shadow .2s;
  box-shadow:0 10px 22px rgba(47,109,219,.16);
}
.feedback-btn:hover{
  background:var(--primary-dark);
  color:#fff;
  transform:translateY(-2px);
}
.feedback-btn:active{transform:translateY(0)}
.form-tip{
  display:none;
  margin-top:12px;
  padding:10px 14px;
  border-radius:12px;
  background:#EEF8F2;
  color:#1D7A4E;
  font-weight:600;
  font-size:.85rem;
}

/* 页脚 */
.footer-grid{
  display:grid;
  grid-template-columns:2fr 1fr 1fr;
  gap:42px;
  padding:56px 0 36px;
}
.footer-brand{
  display:flex;
  flex-direction:column;
  align-items:flex-start;
  gap:12px;
}
.footer-brand .brand-text{
  font-size:1.35rem;
  font-weight:800;
  color:var(--text);
}
.footer-desc{
  color:var(--text-2);
  font-size:.88rem;
  max-width:390px;
  margin:0;
}
.footer-col h4{
  font-size:.92rem;
  font-weight:800;
  margin:0 0 14px;
  letter-spacing:.03em;
}
.footer-links{
  list-style:none;
  margin:0;
  padding:0;
}
.footer-links li{
  margin-bottom:2px;
}
.footer-links a{
  display:inline-flex;
  align-items:center;
  min-height:40px;
  color:var(--text-2);
  font-size:.9rem;
}
.footer-links a:hover{
  color:var(--primary);
}
.footer-bottom{
  display:flex;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding:18px 0 26px;
  border-top:1px solid #EFF3F9;
  font-size:.79rem;
  color:var(--placeholder);
  line-height:1.6;
}

/* 响应式 */
@media (min-width:992px){
  .d-lg-none-always{display:none}
}
@media (max-width:1199.98px){
  .c-page{padding-left:30px;padding-right:30px}
}
@media (max-width:991.98px){
  .app-main,.app-footer{margin-left:0}
  .c-page{padding-left:22px;padding-right:22px}
  .cat-banner{padding:40px 0}
  .cat-title{font-size:2rem}
  .cta-section{padding:56px 0}
  .cta-card{padding:34px 26px}
}
@media (max-width:767.98px){
  .cat-title{font-size:1.75rem}
  .cat-desc{font-size:.94rem}
  .section-title-sm{font-size:1.15rem}
  .footer-grid{
    grid-template-columns:1fr;
    gap:26px;
    padding:42px 0 26px;
  }
  .faq-section{padding:50px 0 56px}
  .cta-card{padding:28px 20px}
}
@media (max-width:575.98px){
  .filter-bar{padding:14px 14px}
  .filter-label{width:100%}
}

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}