/* roulang page: index */
:root{
  --bg:#0A0F1C;
  --bg-deep:#050A13;
  --bg-soft:#0F1B2D;
  --panel:rgba(255,255,255,.04);
  --panel-strong:rgba(255,255,255,.08);
  --border:rgba(255,255,255,.08);
  --border-strong:rgba(255,255,255,.16);
  --primary:#3E7BFF;
  --accent:#21D4B4;
  --purple:#7C6CFF;
  --orange:#FF7A45;
  --text:#F0F4FF;
  --muted:rgba(240,244,255,.68);
  --muted-2:rgba(240,244,255,.45);
  --radius:16px;
  --radius-sm:10px;
  --shadow:0 20px 60px rgba(0,0,0,.35);
  --glow:0 0 35px rgba(62,123,255,.35);
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC","Helvetica Neue",Arial,sans-serif;
}

*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  font-family:var(--font);
  background:var(--bg);
  color:var(--text);
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
  position:relative;
}
body::before{
  content:"";
  position:fixed;
  top:0;left:0;width:100%;height:100%;
  background-image:radial-gradient(rgba(255,255,255,.028) 1px,transparent 1px);
  background-size:24px 24px;
  pointer-events:none;
  z-index:0;
}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
button,input{font-family:inherit;font-size:inherit;}
::selection{background:rgba(62,123,255,.35);color:#fff;}
::-webkit-scrollbar{width:8px;}
::-webkit-scrollbar-track{background:var(--bg-deep);}
::-webkit-scrollbar-thumb{background:rgba(255,255,255,.14);border-radius:999px;}
::-webkit-scrollbar-thumb:hover{background:rgba(62,123,255,.5);}

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

.section{
  position:relative;
  z-index:1;
  padding:88px 0;
}

.section-title{
  font-size:clamp(1.8rem,3vw,2.5rem);
  font-weight:800;
  letter-spacing:-.02em;
  line-height:1.3;
  margin-bottom:16px;
}
.section-sub{
  color:var(--muted);
  font-size:1rem;
  max-width:640px;
  margin-bottom:40px;
}

.kicker{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:var(--accent);
  font-weight:600;
  font-size:.86rem;
  letter-spacing:.06em;
  text-transform:uppercase;
  margin-bottom:14px;
}

.hairline{
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.16),transparent);
  border:0;
}

/* Header */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:60;
  height:68px;
  backdrop-filter:blur(16px);
  background:rgba(5,10,19,.76);
  border-bottom:1px solid rgba(255,255,255,.06);
}
.nav-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:68px;
  gap:16px;
}
.logo{
  display:flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.logo-mark{
  width:40px;height:40px;
  border-radius:10px;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  display:flex;align-items:center;justify-content:center;
  color:#07111F;
  font-weight:800;
  font-size:1.2rem;
  box-shadow:0 0 20px rgba(62,123,255,.35);
}
.logo-group{
  display:flex;
  flex-direction:column;
  line-height:1.2;
}
.logo-text{
  font-weight:800;
  font-size:1.1rem;
  letter-spacing:.02em;
}
.logo-sub{
  font-size:.68rem;
  color:var(--muted);
  letter-spacing:.18em;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:4px;
}
.nav-links a{
  position:relative;
  display:inline-flex;
  align-items:center;
  padding:8px 14px;
  color:var(--muted);
  font-weight:500;
  font-size:.95rem;
  border-radius:8px;
  transition:color .25s,background .25s;
}
.nav-links a:hover{
  color:#fff;
  background:rgba(255,255,255,.04);
}
.nav-links a.active{
  color:#fff;
  font-weight:600;
}
.nav-links a.active::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:2px;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--accent));
  box-shadow:0 0 12px rgba(62,123,255,.55);
}
.nav-actions{
  display:flex;
  align-items:center;
  gap:10px;
}
.cmd-search{
  display:flex;
  align-items:center;
  gap:8px;
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.1);
  border-radius:10px;
  padding:7px 10px;
  width:200px;
  color:var(--muted);
  transition:width .3s,border-color .3s,box-shadow .3s;
}
.cmd-search:focus-within{
  border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(62,123,255,.2);
  width:280px;
}
.cmd-search input{
  background:transparent;
  border:0;
  outline:0;
  color:#fff;
  width:100%;
  font-size:.88rem;
}
.cmd-search input::placeholder{
  color:rgba(255,255,255,.4);
}
.cmd-search .kbd{
  flex-shrink:0;
  font-size:.68rem;
  background:rgba(255,255,255,.1);
  border:1px solid rgba(255,255,255,.14);
  border-radius:5px;
  padding:1px 6px;
  color:var(--muted);
}
.hamburger{
  display:none;
  width:40px;
  height:40px;
  align-items:center;
  justify-content:center;
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.12);
  border-radius:10px;
  color:#fff;
  cursor:pointer;
  transition:background .2s;
}
.hamburger:hover{
  background:rgba(62,123,255,.2);
}

/* Buttons */
.btn-primary{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  color:#07111F;
  font-weight:700;
  font-size:.95rem;
  border:0;
  border-radius:10px;
  padding:10px 20px;
  box-shadow:0 6px 24px rgba(62,123,255,.38);
  cursor:pointer;
  transition:transform .25s,box-shadow .25s,filter .25s;
  white-space:nowrap;
}
.btn-primary:hover{
  transform:translateY(-2px);
  box-shadow:0 10px 32px rgba(62,123,255,.55);
  filter:brightness(1.05);
}
.btn-primary:active{
  transform:translateY(0);
  box-shadow:0 4px 16px rgba(62,123,255,.3);
}
.btn-secondary{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:transparent;
  border:1px solid rgba(255,255,255,.18);
  color:var(--text);
  font-weight:500;
  font-size:.9rem;
  border-radius:10px;
  padding:9px 16px;
  cursor:pointer;
  transition:border-color .25s,background .25s,transform .25s;
  white-space:nowrap;
}
.btn-secondary:hover{
  border-color:var(--primary);
  background:rgba(62,123,255,.1);
  transform:translateY(-1px);
}
.btn-secondary:active{
  transform:translateY(0);
}
.btn-hero{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:6px;
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.14);
  border-radius:10px;
  color:#fff;
  padding:9px 16px;
  font-size:.88rem;
  font-weight:600;
  transition:all .25s;
}
.btn-hero:hover{
  background:linear-gradient(135deg,var(--primary),var(--accent));
  border-color:transparent;
  color:#07111F;
  box-shadow:0 6px 20px rgba(62,123,255,.45);
  transform:translateY(-2px);
}

/* Hero */
.hero{
  position:relative;
  min-height:90vh;
  display:flex;
  align-items:center;
  padding:150px 0 90px;
  z-index:1;
  background:
    radial-gradient(ellipse at 25% 35%,rgba(62,123,255,.2),transparent 58%),
    radial-gradient(ellipse at 75% 70%,rgba(33,212,180,.12),transparent 55%),
    linear-gradient(180deg,rgba(5,10,19,.72),rgba(5,10,19,.92)),
    url('/assets/images/backpic/back-1.png') center/cover no-repeat;
}
.hero::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,transparent 55%,rgba(10,15,28,.7) 100%);
  pointer-events:none;
}
.hero-inner{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:1.1fr .9fr;
  gap:40px;
  align-items:center;
}
.hero-kicker{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:var(--accent);
  font-size:.88rem;
  font-weight:600;
  letter-spacing:.1em;
  margin-bottom:18px;
}
.hero-title{
  font-size:clamp(2.4rem,5vw,4.3rem);
  font-weight:800;
  line-height:1.15;
  letter-spacing:-.02em;
  margin-bottom:20px;
}
.hero-title .highlight{
  background:linear-gradient(135deg,var(--primary),var(--accent));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.hero-sub{
  font-size:clamp(1.1rem,2vw,1.45rem);
  font-weight:600;
  color:#fff;
  margin-bottom:12px;
}
.hero-desc{
  color:var(--muted);
  font-size:1rem;
  max-width:520px;
  margin-bottom:32px;
}
.hero-panel{
  position:relative;
  background:rgba(10,15,28,.62);
  border:1px solid rgba(255,255,255,.12);
  border-radius:18px;
  backdrop-filter:blur(16px);
  padding:22px;
  box-shadow:var(--shadow);
}
.hero-panel::before{
  content:"";
  position:absolute;
  inset:7px;
  border:1px dashed rgba(255,255,255,.18);
  border-radius:12px;
  pointer-events:none;
}
.panel-label{
  display:flex;
  align-items:center;
  gap:8px;
  color:var(--muted);
  font-size:.82rem;
  letter-spacing:.08em;
  margin-bottom:18px;
}
.panel-actions{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:12px;
  position:relative;
  z-index:1;
}
.panel-actions .btn-hero{
  width:100%;
}

/* Two column content */
.split-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:60px;
  align-items:center;
}
.split-image{
  position:relative;
  border-radius:20px;
  overflow:hidden;
  border:1px solid rgba(255,255,255,.1);
  box-shadow:var(--shadow);
}
.split-image img{
  width:100%;
  height:100%;
  object-fit:cover;
  aspect-ratio:4/3;
}
.split-image::after{
  content:"";
  position:absolute;
  inset:8px;
  border:1px solid rgba(255,255,255,.08);
  border-radius:14px;
  pointer-events:none;
}
.stat-group{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
  margin-top:32px;
}
.stat-block{
  background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.08);
  border-radius:14px;
  padding:18px 12px;
  text-align:center;
  transition:border-color .25s,transform .25s;
}
.stat-block:hover{
  border-color:rgba(62,123,255,.4);
  transform:translateY(-3px);
}
.stat-number{
  font-size:clamp(1.6rem,3vw,2.4rem);
  font-weight:800;
  line-height:1.2;
  background:linear-gradient(135deg,#fff,var(--accent));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.stat-label{
  color:var(--muted);
  font-size:.85rem;
  margin-top:6px;
}

/* Feature cards */
.card-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
}
.feature-card{
  position:relative;
  background:linear-gradient(160deg,rgba(255,255,255,.055),rgba(255,255,255,.02));
  border:1px solid rgba(255,255,255,.1);
  border-radius:16px;
  overflow:hidden;
  backdrop-filter:blur(16px);
  transition:transform .3s,border-color .3s,box-shadow .3s;
  display:flex;
  flex-direction:column;
}
.feature-card::after{
  content:"";
  position:absolute;
  inset:5px;
  border:1px solid rgba(255,255,255,.05);
  border-radius:12px;
  pointer-events:none;
}
.feature-card:hover{
  transform:translateY(-5px);
  border-color:rgba(62,123,255,.45);
  box-shadow:var(--glow);
}
.feature-card-img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  transition:transform .4s;
}
.feature-card:hover .feature-card-img{
  transform:scale(1.04);
}
.feature-card-body{
  padding:20px;
  display:flex;
  flex-direction:column;
  flex:1;
}
.tag-badge{
  display:inline-flex;
  align-items:center;
  align-self:flex-start;
  background:rgba(124,108,255,.14);
  border:1px solid rgba(124,108,255,.3);
  color:#C9C4FF;
  font-size:.74rem;
  font-weight:600;
  padding:2px 10px;
  border-radius:999px;
  margin-bottom:12px;
}
.tag-badge.green{
  background:rgba(33,212,180,.12);
  border-color:rgba(33,212,180,.3);
  color:var(--accent);
}
.tag-badge.blue{
  background:rgba(62,123,255,.14);
  border-color:rgba(62,123,255,.35);
  color:#9DBBFF;
}
.tag-badge.orange{
  background:rgba(255,122,69,.14);
  border-color:rgba(255,122,69,.3);
  color:#FFB899;
}
.feature-card-title{
  font-size:1.1rem;
  font-weight:700;
  line-height:1.4;
  margin-bottom:10px;
}
.feature-card-desc{
  color:var(--muted);
  font-size:.9rem;
  line-height:1.7;
  flex:1;
}
.feature-card-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--accent);
  font-size:.88rem;
  font-weight:600;
  margin-top:16px;
  transition:gap .25s;
}
.feature-card-link i{
  font-size:.8rem;
  transition:transform .25s;
}
.feature-card:hover .feature-card-link i{
  transform:translateX(4px);
}

/* Trust strip */
.trust-strip{
  background:rgba(255,255,255,.03);
  border:1px solid rgba(255,255,255,.07);
  border-radius:18px;
  overflow:hidden;
}
.trust-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
}
.trust-cell{
  padding:28px 22px;
  text-align:center;
  border-right:1px solid rgba(255,255,255,.07);
  transition:background .25s;
}
.trust-cell:last-child{border-right:0;}
.trust-cell:hover{
  background:rgba(62,123,255,.06);
}
.trust-stage{
  font-size:.78rem;
  letter-spacing:.1em;
  color:var(--muted);
  margin-bottom:8px;
}
.trust-title{
  font-weight:700;
  font-size:1rem;
  margin-bottom:6px;
}
.trust-desc{
  color:var(--muted);
  font-size:.82rem;
  line-height:1.6;
}

/* News section */
.news-section{
  background:linear-gradient(180deg,rgba(15,27,45,.35),rgba(5,10,19,.4));
}
.post-list{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:24px;
}
.post-item{
  display:flex;
  flex-direction:column;
  background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.08);
  border-radius:16px;
  padding:24px;
  transition:all .3s;
  position:relative;
  overflow:hidden;
}
.post-item::before{
  content:"";
  position:absolute;
  left:0;top:0;bottom:0;
  width:3px;
  background:linear-gradient(180deg,var(--primary),var(--accent));
  opacity:0;
  transition:opacity .3s;
}
.post-item:hover{
  border-color:rgba(62,123,255,.4);
  background:rgba(255,255,255,.06);
  transform:translateY(-3px);
  box-shadow:var(--glow);
}
.post-item:hover::before{
  opacity:1;
}
.post-meta{
  display:flex;
  align-items:center;
  gap:12px;
  margin-bottom:12px;
}
.post-date{
  color:var(--muted-2);
  font-size:.82rem;
  display:inline-flex;
  align-items:center;
  gap:6px;
}
.post-title{
  font-size:1.1rem;
  font-weight:700;
  line-height:1.45;
  margin-bottom:10px;
}
.post-excerpt{
  color:var(--muted);
  font-size:.9rem;
  line-height:1.7;
  margin-bottom:16px;
  flex:1;
}
.post-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--accent);
  font-size:.85rem;
  font-weight:600;
}
.post-link i{
  transition:transform .25s;
}
.post-item:hover .post-link i{
  transform:translateX(4px);
}
.empty-state{
  grid-column:1/-1;
  text-align:center;
  padding:40px;
  color:var(--muted);
  font-size:.95rem;
  background:rgba(255,255,255,.03);
  border:1px dashed rgba(255,255,255,.12);
  border-radius:16px;
}

/* FAQ */
.faq-list{
  max-width:860px;
  margin:0 auto;
  display:flex;
  flex-direction:column;
  gap:16px;
}
.faq-item{
  background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.08);
  border-radius:14px;
  overflow:hidden;
  transition:border-color .3s,box-shadow .3s;
}
.faq-item.open{
  border-color:rgba(62,123,255,.35);
  box-shadow:0 0 30px rgba(62,123,255,.08);
}
.faq-question{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:20px 24px;
  cursor:pointer;
  font-weight:600;
  font-size:1rem;
  transition:background .25s;
}
.faq-question:hover{
  background:rgba(255,255,255,.02);
}
.faq-icon{
  flex-shrink:0;
  width:30px;height:30px;
  display:flex;
  align-items:center;
  justify-content:center;
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.12);
  border-radius:8px;
  font-size:.9rem;
  color:var(--accent);
  transition:transform .35s,background .35s;
}
.faq-item.open .faq-icon{
  transform:rotate(45deg);
  background:rgba(62,123,255,.18);
  border-color:rgba(62,123,255,.4);
}
.faq-answer{
  max-height:0;
  overflow:hidden;
  transition:max-height .45s ease,opacity .4s ease, padding .3s;
  opacity:0;
  padding:0 24px;
  color:var(--muted);
  font-size:.92rem;
  line-height:1.85;
}
.faq-item.open .faq-answer{
  max-height:320px;
  opacity:1;
  padding:0 24px 22px;
}

/* CTA / Newsletter */
.cta-section{
  position:relative;
  padding:90px 0;
  background:
    radial-gradient(ellipse at 50% 100%,rgba(33,212,180,.14),transparent 60%),
    linear-gradient(180deg,rgba(5,10,19,.8),rgba(5,10,19,.9)),
    url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
}
.cta-panel{
  position:relative;
  max-width:820px;
  margin:0 auto;
  background:rgba(10,15,28,.7);
  border:1px solid rgba(255,255,255,.12);
  border-radius:20px;
  backdrop-filter:blur(18px);
  padding:48px 40px;
  text-align:center;
  box-shadow:var(--shadow);
}
.cta-panel::before{
  content:"";
  position:absolute;
  inset:8px;
  border:1px dashed rgba(255,255,255,.16);
  border-radius:14px;
  pointer-events:none;
}
.cta-title{
  font-size:clamp(1.6rem,3vw,2.3rem);
  font-weight:800;
  margin-bottom:14px;
}
.cta-desc{
  color:var(--muted);
  max-width:520px;
  margin:0 auto 30px;
  font-size:.96rem;
  line-height:1.8;
}
.newsletter-form{
  display:flex;
  gap:12px;
  max-width:480px;
  margin:0 auto;
  position:relative;
  z-index:2;
}
.form-input{
  flex:1;
  background:rgba(255,255,255,.07);
  border:1px solid rgba(255,255,255,.14);
  border-radius:10px;
  color:#fff;
  padding:12px 16px;
  font-size:.92rem;
  outline:none;
  transition:border-color .3s,box-shadow .3s;
}
.form-input::placeholder{
  color:rgba(255,255,255,.4);
}
.form-input:focus{
  border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(62,123,255,.22);
}

/* Footer */
.site-footer{
  background:var(--bg-deep);
  border-top:1px solid rgba(255,255,255,.06);
  padding:64px 0 24px;
  position:relative;
  z-index:1;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.1fr;
  gap:40px;
  margin-bottom:40px;
}
.footer-brand .logo{
  margin-bottom:16px;
}
.footer-about{
  color:var(--muted);
  font-size:.88rem;
  line-height:1.8;
  max-width:300px;
}
.footer-col h4{
  font-size:1rem;
  font-weight:700;
  margin-bottom:16px;
  letter-spacing:.02em;
}
.footer-links{
  list-style:none;
  display:flex;
  flex-direction:column;
  gap:10px;
}
.footer-links a{
  color:var(--muted);
  font-size:.9rem;
  transition:color .25s,padding-left .25s;
}
.footer-links a:hover{
  color:var(--accent);
  padding-left:4px;
}
.footer-contact p{
  color:var(--muted);
  font-size:.88rem;
  line-height:1.8;
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.06);
  padding-top:24px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:12px;
  color:var(--muted-2);
  font-size:.8rem;
}
.footer-bottom a{
  color:var(--muted-2);
  transition:color .25s;
}
.footer-bottom a:hover{
  color:var(--accent);
}

/* Responsive */
@media (max-width:1024px){
  .container{padding:0 20px;}
  .hero{padding:130px 0 70px;}
  .hero-inner{grid-template-columns:1fr;gap:28px;}
  .hero-panel{max-width:560px;}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .trust-grid{grid-template-columns:repeat(2,1fr);}
  .trust-cell{border-bottom:1px solid rgba(255,255,255,.07);border-right:1px solid rgba(255,255,255,.07);}
  .trust-cell:nth-child(2n){border-right:0;}
  .trust-cell:nth-child(3),.trust-cell:nth-child(4){border-bottom:0;}
  .footer-grid{grid-template-columns:1fr 1fr;}

  .nav-links{
    display:none;
    position:absolute;
    top:68px;
    left:0;right:0;
    background:rgba(5,10,19,.96);
    padding:18px 24px;
    flex-direction:column;
    align-items:stretch;
    gap:8px;
    border-bottom:1px solid rgba(255,255,255,.08);
    backdrop-filter:blur(18px);
  }
  .site-header.open .nav-links{
    display:flex;
  }
  .nav-links a{
    padding:12px 14px;
    border-radius:10px;
  }
  .nav-links a.active::after{
    bottom:8px;
  }
  .hamburger{
    display:inline-flex;
  }
  .cmd-search{
    width:42px;
    padding:8px;
    justify-content:center;
  }
  .cmd-search input,.cmd-search .kbd{
    display:none;
  }
  .cmd-search:focus-within{
    width:42px;
    box-shadow:none;
  }
}
@media (max-width:768px){
  .section{padding:64px 0;}
  .split-grid{grid-template-columns:1fr;gap:32px;}
  .post-list{grid-template-columns:1fr;}
  .stat-group{gap:14px;}
  .cta-panel{padding:40px 24px;}
  .newsletter-form{flex-direction:column;}
  .newsletter-form .btn-primary{
    width:100%;
  }
  .footer-bottom{
    flex-direction:column;
    justify-content:center;
    text-align:center;
  }
}
@media (max-width:520px){
  .hero{padding-top:120px;}
  .hero-title{font-size:2rem;}
  .hero-desc{font-size:.92rem;}
  .panel-actions{grid-template-columns:1fr;}
  .card-grid{grid-template-columns:1fr;}
  .trust-grid{grid-template-columns:1fr;}
  .trust-cell{border-right:0;border-bottom:1px solid rgba(255,255,255,.07);}
  .trust-cell:last-child{border-bottom:0;}
  .stat-group{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .nav-cta{
    display:none;
  }
}

/* roulang page: category1 */
:root {
            --bg-primary: #090E17;
            --bg-secondary: #0F1B2D;
            --bg-card: rgba(255, 255, 255, 0.04);
            --border-card: rgba(255, 255, 255, 0.08);
            --border-glass: rgba(255, 255, 255, 0.12);
            --primary: #3E7BFF;
            --primary-light: #6B9BFF;
            --accent: #21D4B4;
            --accent-light: #4DE6C4;
            --purple: #7C6CFF;
            --orange: #FF7A45;
            --text-main: rgba(255, 255, 255, 0.92);
            --text-muted: rgba(255, 255, 255, 0.62);
            --text-weak: rgba(255, 255, 255, 0.4);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-full: 999px;
            --shadow-glow: 0 0 24px rgba(62, 123, 255, 0.28), 0 8px 30px rgba(62, 123, 255, 0.18);
            --shadow-card: 0 10px 40px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 16px 50px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(62, 123, 255, 0.25);
            --font-sans: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
            --transition: all 0.3s cubic-bezier(0.2, 0.8, 0.2, 1);
            --nav-height: 70px;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            scroll-padding-top: calc(var(--nav-height) + 20px);
        }
        body {
            font-family: var(--font-sans);
            background: var(--bg-primary);
            color: var(--text-main);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        button {
            font-family: inherit;
            border: none;
            background: none;
            cursor: pointer;
            color: inherit;
        }
        input {
            font-family: inherit;
            border: none;
            outline: none;
            background: none;
            color: inherit;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 导航栏 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            height: var(--nav-height);
            background: rgba(9, 14, 23, 0.72);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.07);
            transition: var(--transition);
        }
        .site-header.scrolled {
            background: rgba(9, 14, 23, 0.92);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
        }
        .header-inner {
            height: var(--nav-height);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
        }
        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-mark {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-md);
            background: linear-gradient(135deg, var(--primary), var(--accent));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            box-shadow: var(--shadow-glow);
        }
        .logo-group {
            display: flex;
            flex-direction: column;
            line-height: 1.1;
        }
        .logo-text {
            font-size: 20px;
            font-weight: 800;
            letter-spacing: 0.02em;
            color: #fff;
        }
        .logo-sub {
            font-size: 12px;
            font-weight: 600;
            color: var(--text-muted);
            letter-spacing: 0.08em;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 32px;
            margin-left: auto;
        }
        .nav-links a {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-muted);
            position: relative;
            padding: 6px 2px;
            white-space: nowrap;
            transition: var(--transition);
        }
        .nav-links a:hover {
            color: #fff;
        }
        .nav-links a.active {
            color: #fff;
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 2px;
            border-radius: 2px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            box-shadow: 0 0 12px rgba(62, 123, 255, 0.6);
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .search-wrap {
            display: flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.09);
            border-radius: var(--radius-full);
            padding: 7px 14px;
            transition: var(--transition);
            width: 200px;
        }
        .search-wrap:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(62, 123, 255, 0.2);
            width: 280px;
            background: rgba(255, 255, 255, 0.08);
        }
        .search-wrap i {
            color: var(--text-muted);
            font-size: 14px;
        }
        .search-wrap input {
            font-size: 14px;
            width: 100%;
            color: #fff;
        }
        .search-wrap input::placeholder {
            color: var(--text-weak);
        }
        .search-wrap kbd {
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 4px;
            font-size: 11px;
            padding: 2px 6px;
            color: var(--text-muted);
            white-space: nowrap;
            font-family: inherit;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 600;
            border-radius: var(--radius-md);
            padding: 10px 22px;
            transition: var(--transition);
            white-space: nowrap;
            border: 1px solid transparent;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            box-shadow: var(--shadow-glow);
        }
        .btn-primary:hover {
            filter: brightness(1.1);
            box-shadow: 0 0 30px rgba(62, 123, 255, 0.4), 0 8px 30px rgba(33, 212, 180, 0.2);
            transform: translateY(-2px);
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-ghost {
            background: transparent;
            border-color: rgba(255, 255, 255, 0.14);
            color: var(--text-main);
        }
        .btn-ghost:hover {
            border-color: var(--primary);
            background: rgba(62, 123, 255, 0.1);
        }
        .btn-secondary {
            background: rgba(255, 255, 255, 0.06);
            border-color: rgba(255, 255, 255, 0.14);
            color: #fff;
        }
        .btn-secondary:hover {
            border-color: var(--primary);
            background: rgba(62, 123, 255, 0.15);
            box-shadow: 0 0 20px rgba(62, 123, 255, 0.15);
        }
        .btn-lg {
            padding: 14px 32px;
            font-size: 16px;
        }
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            border: 1px solid rgba(255, 255, 255, 0.14);
            border-radius: var(--radius-sm);
        }
        .menu-toggle span {
            width: 18px;
            height: 2px;
            background: #fff;
            border-radius: 2px;
            transition: var(--transition);
        }
        .menu-toggle.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .menu-toggle.open span:nth-child(2) {
            opacity: 0;
        }
        .menu-toggle.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* ===== Hero ===== */
        .category-hero {
            position: relative;
            min-height: 78vh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 140px 0 90px;
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
            z-index: 0;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg,
                    rgba(9, 14, 23, 0.62) 0%,
                    rgba(9, 14, 23, 0.78) 50%,
                    var(--bg-primary) 100%);
            z-index: 1;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background-image:
                linear-gradient(rgba(62, 123, 255, 0.055) 1px, transparent 1px),
                linear-gradient(90deg, rgba(62, 123, 255, 0.055) 1px, transparent 1px);
            background-size: 44px 44px;
            z-index: 1;
            pointer-events: none;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 860px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(62, 123, 255, 0.12);
            border: 1px solid rgba(62, 123, 255, 0.28);
            color: var(--primary-light);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 18px;
            border-radius: var(--radius-full);
            letter-spacing: 0.05em;
            margin-bottom: 24px;
            backdrop-filter: blur(8px);
        }
        .category-hero h1 {
            font-size: clamp(2.6rem, 5vw, 4rem);
            font-weight: 800;
            line-height: 1.15;
            letter-spacing: -0.02em;
            color: #fff;
            margin-bottom: 18px;
            text-shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
        }
        .category-hero h1 .highlight {
            background: linear-gradient(135deg, var(--primary-light), var(--accent));
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .hero-subtitle {
            font-size: clamp(1.05rem, 2vw, 1.3rem);
            color: rgba(255, 255, 255, 0.78);
            font-weight: 400;
            max-width: 640px;
            margin: 0 auto 38px;
            line-height: 1.75;
        }
        .hero-quick-panel {
            display: inline-flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 14px;
            background: rgba(255, 255, 255, 0.05);
            backdrop-filter: blur(14px);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-lg);
            padding: 20px 28px;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
        }
        .quick-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            background: linear-gradient(135deg, rgba(62, 123, 255, 0.2), rgba(33, 212, 180, 0.16));
            border: 1px solid rgba(62, 123, 255, 0.35);
            padding: 10px 22px;
            border-radius: var(--radius-md);
            transition: var(--transition);
        }
        .quick-btn:hover {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-color: transparent;
            box-shadow: var(--shadow-glow);
            transform: translateY(-2px);
        }
        .quick-btn-outline {
            background: rgba(255, 255, 255, 0.05);
            border-color: rgba(255, 255, 255, 0.16);
            color: rgba(255, 255, 255, 0.85);
        }
        .quick-btn-outline:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: rgba(255, 255, 255, 0.3);
            box-shadow: none;
            transform: translateY(-2px);
        }

        /* ===== 通用 section ===== */
        .section {
            padding: 90px 0;
            position: relative;
        }
        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            color: var(--accent);
            background: rgba(33, 212, 180, 0.08);
            border: 1px solid rgba(33, 212, 180, 0.18);
            padding: 5px 16px;
            border-radius: var(--radius-full);
            letter-spacing: 0.06em;
            text-transform: uppercase;
            margin-bottom: 16px;
        }
        .section-head {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 56px;
        }
        .section-head h2 {
            font-size: clamp(1.9rem, 3.4vw, 2.6rem);
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -0.01em;
            color: #fff;
            margin-bottom: 14px;
        }
        .section-head p {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* ===== 标签区 ===== */
        .tag-section {
            padding: 30px 0 10px;
            margin-top: -40px;
            position: relative;
            z-index: 5;
        }
        .tag-row {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 12px;
            background: rgba(255, 255, 255, 0.04);
            backdrop-filter: blur(12px);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-full);
            padding: 14px 18px;
            box-shadow: var(--shadow-card);
        }
        .tag {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-muted);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            padding: 7px 18px;
            border-radius: var(--radius-full);
            transition: var(--transition);
        }
        .tag:hover {
            color: #fff;
            border-color: rgba(62, 123, 255, 0.4);
            background: rgba(62, 123, 255, 0.08);
        }
        .tag.active {
            color: #fff;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-color: transparent;
            box-shadow: 0 0 16px rgba(62, 123, 255, 0.35);
            font-weight: 600;
        }

        /* ===== 介绍区 ===== */
        .intro-section {
            background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
        }
        .intro-text .section-tag {
            margin-bottom: 14px;
        }
        .intro-text h2 {
            font-size: clamp(1.7rem, 3vw, 2.4rem);
            font-weight: 800;
            line-height: 1.3;
            color: #fff;
            margin-bottom: 20px;
        }
        .intro-text p {
            color: var(--text-muted);
            font-size: 15.5px;
            line-height: 1.85;
            margin-bottom: 16px;
        }
        .intro-stats {
            display: flex;
            gap: 40px;
            margin-top: 28px;
            flex-wrap: wrap;
        }
        .stat-item {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }
        .stat-num {
            font-size: 28px;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.01em;
            line-height: 1.2;
        }
        .stat-label {
            font-size: 13px;
            color: var(--text-muted);
        }
        .intro-visual {
            position: relative;
        }
        .intro-visual img {
            border-radius: var(--radius-lg);
            border: 1px solid rgba(255, 255, 255, 0.1);
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.45);
            width: 100%;
            object-fit: cover;
            aspect-ratio: 4/3;
        }
        .float-card {
            position: absolute;
            bottom: -18px;
            left: 24px;
            display: flex;
            align-items: center;
            gap: 10px;
            background: rgba(15, 27, 45, 0.9);
            backdrop-filter: blur(12px);
            border: 1px solid rgba(255, 255, 255, 0.1);
            padding: 12px 20px;
            border-radius: var(--radius-md);
            font-size: 13px;
            font-weight: 600;
            color: #fff;
            box-shadow: var(--shadow-card);
        }
        .float-card i {
            font-size: 18px;
        }

        /* ===== 精选卡片 ===== */
        .featured-section {
            background: var(--bg-primary);
        }
        .grid-cards {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .content-card {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .content-card:hover {
            transform: translateY(-4px);
            border-color: rgba(62, 123, 255, 0.3);
            box-shadow: var(--shadow-card-hover);
            background: rgba(255, 255, 255, 0.06);
        }
        .card-cover {
            overflow: hidden;
            aspect-ratio: 16/9;
        }
        .card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s cubic-bezier(0.2, 0.8, 0.2, 1);
        }
        .content-card:hover .card-cover img {
            transform: scale(1.05);
        }
        .card-body {
            padding: 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .card-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--accent);
            background: rgba(33, 212, 180, 0.08);
            border: 1px solid rgba(33, 212, 180, 0.16);
            padding: 3px 12px;
            border-radius: var(--radius-full);
            margin-bottom: 12px;
            align-self: flex-start;
        }
        .card-body h3 {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            line-height: 1.4;
            margin-bottom: 10px;
        }
        .card-body p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            flex: 1;
            margin-bottom: 16px;
        }
        .card-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary-light);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
        }
        .card-link:hover {
            color: var(--accent);
            gap: 12px;
        }

        /* ===== 信任区 ===== */
        .trust-section {
            background: var(--bg-secondary);
            background-image:
                radial-gradient(circle at 20% 30%, rgba(62, 123, 255, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 80% 70%, rgba(33, 212, 180, 0.07) 0%, transparent 50%);
        }
        .trust-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .trust-item {
            background: rgba(255, 255, 255, 0.035);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-lg);
            padding: 36px 24px;
            text-align: center;
            transition: var(--transition);
            backdrop-filter: blur(8px);
        }
        .trust-item:hover {
            border-color: rgba(62, 123, 255, 0.3);
            background: rgba(255, 255, 255, 0.06);
            transform: translateY(-3px);
        }
        .trust-item i {
            font-size: 30px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            margin-bottom: 14px;
            display: block;
        }
        .trust-num {
            font-size: 26px;
            font-weight: 800;
            color: #fff;
            display: block;
            line-height: 1.2;
            margin-bottom: 4px;
        }
        .trust-label {
            font-size: 14px;
            color: var(--text-muted);
        }

        /* ===== 流程区 ===== */
        .steps-section {
            background: var(--bg-primary);
        }
        .step-item {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            position: relative;
            transition: var(--transition);
            overflow: hidden;
        }
        .step-item::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            opacity: 0;
            transition: var(--transition);
        }
        .step-item:hover {
            border-color: rgba(62, 123, 255, 0.25);
            background: rgba(255, 255, 255, 0.05);
            transform: translateY(-3px);
        }
        .step-item:hover::before {
            opacity: 1;
        }
        .step-num {
            font-size: 32px;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary-light), var(--accent));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            line-height: 1;
            display: block;
            margin-bottom: 16px;
        }
        .step-item h3 {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }
        .step-item p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.65;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
        }
        .faq-list {
            max-width: 840px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .faq-item {
            background: rgba(255, 255, 255, 0.035);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: var(--transition);
            backdrop-filter: blur(8px);
        }
        .faq-item:hover {
            border-color: rgba(62, 123, 255, 0.2);
        }
        .faq-item.open {
            border-color: rgba(62, 123, 255, 0.35);
            background: rgba(255, 255, 255, 0.05);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 24px;
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            text-align: left;
            transition: var(--transition);
        }
        .faq-question:hover {
            color: var(--primary-light);
        }
        .faq-question i {
            font-size: 16px;
            color: var(--text-muted);
            transition: transform 0.4s cubic-bezier(0.2, 0.8, 0.2, 1);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(45deg);
            color: var(--accent);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s cubic-bezier(0.2, 0.8, 0.2, 1);
        }
        .faq-answer-inner {
            padding: 0 24px 22px;
            font-size: 14.5px;
            color: var(--text-muted);
            line-height: 1.8;
        }
        .faq-answer-inner p {
            margin-bottom: 8px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--bg-primary);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background:
                radial-gradient(ellipse at 50% 0%, rgba(62, 123, 255, 0.12) 0%, transparent 65%),
                linear-gradient(rgba(62, 123, 255, 0.04) 1px, transparent 1px),
                linear-gradient(90deg, rgba(62, 123, 255, 0.04) 1px, transparent 1px);
            background-size: 100% 100%, 50px 50px, 50px 50px;
            pointer-events: none;
        }
        .cta-panel {
            position: relative;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 24px;
            padding: 60px 48px;
            text-align: center;
            backdrop-filter: blur(14px);
            box-shadow: var(--shadow-card);
            background-image: linear-gradient(135deg, rgba(62, 123, 255, 0.06) 0%, rgba(33, 212, 180, 0.04) 100%);
        }
        .cta-panel h2 {
            font-size: clamp(1.6rem, 3vw, 2.3rem);
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }
        .cta-panel p {
            font-size: 15px;
            color: var(--text-muted);
            margin-bottom: 30px;
        }
        .cta-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #070B13;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 70px 0 30px;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 0.9fr 0.9fr 1fr;
            gap: 48px;
            margin-bottom: 50px;
        }
        .footer-brand .logo {
            margin-bottom: 18px;
        }
        .footer-about {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 280px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
        }
        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links a {
            font-size: 14px;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-contact p {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 10px;
            display: flex;
            align-items: center;
        }
        .footer-contact i {
            color: var(--text-weak);
            font-size: 14px;
            width: 18px;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 22px;
            font-size: 13px;
            color: var(--text-weak);
        }
        .footer-bottom a {
            color: var(--text-muted);
            transition: var(--transition);
        }
        .footer-bottom a:hover {
            color: #fff;
        }

        /* ===== 移动端菜单 ===== */
        .mobile-menu {
            display: none;
            position: fixed;
            top: var(--nav-height);
            left: 0;
            right: 0;
            background: rgba(9, 14, 23, 0.97);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 24px 28px;
            z-index: 99;
            flex-direction: column;
            gap: 14px;
            opacity: 0;
            visibility: hidden;
            transform: translateY(-10px);
            transition: var(--transition);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
        }
        .mobile-menu.open {
            display: flex;
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        .mobile-menu a {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-muted);
            padding: 10px 4px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }
        .mobile-menu a:last-child {
            border-bottom: none;
        }
        .mobile-menu a.active {
            color: #fff;
            border-bottom-color: var(--primary);
        }
        .mobile-menu a.active::before {
            content: '▸ ';
            color: var(--accent);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .nav-links {
                display: none;
            }
            .menu-toggle {
                display: flex;
            }
            .search-wrap {
                width: 170px;
            }
            .search-wrap:focus-within {
                width: 220px;
            }
            .grid-cards {
                grid-template-columns: repeat(2, 1fr);
            }
            .trust-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .section {
                padding: 64px 0;
            }
            .hero-quick-panel {
                flex-direction: column;
                width: 100%;
                max-width: 340px;
                margin: 0 auto;
            }
            .quick-btn {
                justify-content: center;
            }
            .grid-cards {
                grid-template-columns: 1fr;
            }
            .trust-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .step-item {
                padding: 24px 20px;
            }
            .cta-panel {
                padding: 40px 24px;
            }
            .search-wrap {
                display: none;
            }
            .btn-ghost {
                display: none !important;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .trust-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .intro-stats {
                gap: 24px;
            }
            .stat-num {
                font-size: 24px;
            }
            .hero-badge {
                font-size: 12px;
                padding: 5px 14px;
            }
            .category-hero h1 {
                font-size: 2rem;
            }
            .cta-actions {
                flex-direction: column;
                align-items: center;
            }
            .cta-actions .btn {
                width: 100%;
                max-width: 280px;
            }
            .float-card {
                left: 16px;
                bottom: -14px;
            }
        }

/* roulang page: article */
:root {
      --bg-primary: #090E17;
      --bg-secondary: #0F1B2D;
      --bg-card: rgba(255, 255, 255, 0.04);
      --bg-card-hover: rgba(255, 255, 255, 0.07);
      --border-card: rgba(255, 255, 255, 0.08);
      --border-card-hover: rgba(255, 255, 255, 0.14);
      --color-primary: #3E7BFF;
      --color-secondary: #21D4B4;
      --color-purple: #7C6CFF;
      --color-accent: #FF7A45;
      --text-primary: rgba(255, 255, 255, 0.92);
      --text-secondary: rgba(255, 255, 255, 0.62);
      --radius-card: 16px;
      --radius-btn: 10px;
      --shadow-primary: 0 8px 30px rgba(62, 123, 255, 0.32);
      --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.25);
      --font-sans: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
    }

    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; }
    body {
      font-family: var(--font-sans);
      background-color: var(--bg-primary);
      background-image:
        linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
      background-size: 32px 32px;
      color: var(--text-primary);
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
      min-height: 100vh;
      display: flex;
      flex-direction: column;
    }
    img { max-width: 100%; display: block; }
    a { text-decoration: none; color: inherit; transition: color .2s ease; }
    button, input { font-family: inherit; font-size: 100%; }
    .container { max-width: 1240px; margin: 0 auto; padding: 0 24px; }

    /* Header / Nav */
    .site-header {
      position: fixed;
      top: 0; left: 0; right: 0;
      z-index: 100;
      background: rgba(9, 14, 23, 0.8);
      backdrop-filter: blur(18px);
      -webkit-backdrop-filter: blur(18px);
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
      height: 72px;
    }
    .logo {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      flex-shrink: 0;
    }
    .logo-mark {
      width: 36px; height: 36px;
      display: inline-flex; align-items: center; justify-content: center;
      background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
      border-radius: 10px;
      color: #fff;
      font-weight: 800;
      font-size: 18px;
      box-shadow: 0 4px 16px rgba(62, 123, 255, 0.4);
    }
    .logo-group { display: flex; flex-direction: column; line-height: 1.2; }
    .logo-text { font-size: 18px; font-weight: 800; letter-spacing: 0.02em; }
    .logo-sub { font-size: 11px; color: var(--text-secondary); letter-spacing: 0.08em; }

    .nav-links { display: flex; align-items: center; gap: 4px; }
    .nav-links a {
      display: inline-flex;
      align-items: center;
      padding: 8px 16px;
      border-radius: 999px;
      font-size: 14px;
      font-weight: 500;
      color: var(--text-secondary);
      transition: all .2s ease;
      white-space: nowrap;
    }
    .nav-links a:hover { color: #fff; background: rgba(255, 255, 255, 0.06); }
    .nav-links a.active {
      color: #fff;
      background: rgba(62, 123, 255, 0.14);
      box-shadow: inset 0 -2px 0 var(--color-primary);
    }

    .header-actions { display: flex; align-items: center; gap: 16px; flex-shrink: 0; }

    /* Command search */
    .command-search {
      display: flex;
      align-items: center;
      gap: 8px;
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: 10px;
      padding: 8px 12px;
      width: 200px;
      transition: all .25s ease;
    }
    .command-search:focus-within {
      width: 280px;
      border-color: var(--color-primary);
      background: rgba(62, 123, 255, 0.08);
      box-shadow: 0 0 0 3px rgba(62, 123, 255, 0.18);
    }
    .command-search i { color: var(--text-secondary); font-size: 14px; }
    .command-search input {
      flex: 1;
      min-width: 0;
      background: transparent;
      border: none;
      outline: none;
      color: #fff;
      font-size: 14px;
    }
    .command-search input::placeholder { color: rgba(255, 255, 255, 0.35); }
    .command-search kbd {
      font-size: 11px;
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(255, 255, 255, 0.14);
      border-radius: 6px;
      padding: 2px 8px;
      color: rgba(255, 255, 255, 0.5);
      font-family: inherit;
      white-space: nowrap;
    }

    .search-toggle {
      display: none;
      background: rgba(255, 255, 255, 0.06);
      border: 1px solid rgba(255, 255, 255, 0.1);
      color: #fff;
      width: 38px; height: 38px;
      border-radius: 10px;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      transition: all .2s ease;
    }
    .search-toggle:hover { background: rgba(255, 255, 255, 0.1); border-color: var(--color-primary); }

    .menu-toggle {
      display: none;
      background: rgba(255, 255, 255, 0.06);
      border: 1px solid rgba(255, 255, 255, 0.1);
      color: #fff;
      width: 38px; height: 38px;
      border-radius: 10px;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      font-size: 18px;
      transition: all .2s ease;
    }
    .menu-toggle:hover { background: rgba(255, 255, 255, 0.1); border-color: var(--color-primary); }

    .mobile-search-panel {
      display: none;
      position: absolute;
      top: 72px; left: 0; right: 0;
      padding: 12px 0;
      background: rgba(9, 14, 23, 0.96);
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    }
    .mobile-search-panel.open { display: block; }
    .mobile-search-panel .command-search { width: 100% !important; display: flex !important; }

    /* Buttons */
    .btn-primary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      background: linear-gradient(135deg, #3E7BFF 0%, #21D4B4 100%);
      color: #fff;
      font-weight: 700;
      font-size: 14px;
      padding: 11px 22px;
      border-radius: 10px;
      box-shadow: 0 6px 24px rgba(62, 123, 255, 0.35);
      transition: all .25s ease;
      border: none;
      cursor: pointer;
      white-space: nowrap;
    }
    .btn-primary:hover {
      filter: brightness(1.12);
      box-shadow: 0 8px 32px rgba(62, 123, 255, 0.5);
      transform: translateY(-1px);
    }
    .btn-primary:active {
      transform: translateY(0);
      box-shadow: 0 4px 16px rgba(62, 123, 255, 0.3);
    }
    .btn-secondary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.14);
      color: rgba(255, 255, 255, 0.85);
      font-weight: 600;
      font-size: 14px;
      padding: 11px 22px;
      border-radius: 10px;
      transition: all .25s ease;
      cursor: pointer;
      white-space: nowrap;
    }
    .btn-secondary:hover { border-color: var(--color-primary); background: rgba(62, 123, 255, 0.1); color: #fff; }
    .btn-secondary:active { transform: translateY(0); }
    .btn-sm { padding: 8px 18px; font-size: 13px; }

    /* Main */
    .article-main {
      padding: 120px 0 80px;
      flex: 1;
    }

    /* Breadcrumb */
    .breadcrumb {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 13px;
      color: var(--text-secondary);
      margin-bottom: 40px;
      flex-wrap: wrap;
    }
    .breadcrumb a { color: var(--text-secondary); transition: color .2s ease; }
    .breadcrumb a:hover { color: var(--color-secondary); }
    .breadcrumb-sep { color: rgba(255, 255, 255, 0.28); }
    .breadcrumb-active {
      color: rgba(255, 255, 255, 0.55);
      max-width: 420px;
      overflow: hidden;
      text-overflow: ellipsis;
      white-space: nowrap;
    }

    /* Article Card */
    .article-card {
      background: var(--bg-card);
      border: 1px solid var(--border-card);
      border-radius: 20px;
      padding: 48px;
      max-width: 920px;
      margin: 0 auto 64px;
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      box-shadow: var(--shadow-card);
      position: relative;
    }
    .article-card::before {
      content: "";
      position: absolute;
      top: 0; left: 24px; right: 24px;
      height: 1px;
      background: linear-gradient(90deg, transparent, rgba(62, 123, 255, 0.4), transparent);
    }

    .article-header { text-align: center; margin-bottom: 32px; }
    .article-tags { display: flex; justify-content: center; gap: 12px; margin-bottom: 20px; flex-wrap: wrap; }
    .badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 6px 16px;
      background: rgba(62, 123, 255, 0.14);
      border: 1px solid rgba(62, 123, 255, 0.25);
      color: rgba(255, 255, 255, 0.88);
      font-size: 13px;
      font-weight: 600;
      border-radius: 999px;
    }
    .article-title {
      font-size: clamp(2rem, 4vw, 3.2rem);
      font-weight: 800;
      line-height: 1.3;
      margin-bottom: 20px;
      letter-spacing: -0.01em;
      color: #fff;
    }
    .article-meta {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 24px;
      flex-wrap: wrap;
      color: var(--text-secondary);
      font-size: 14px;
    }
    .article-meta span { display: inline-flex; align-items: center; }
    .article-meta i { margin-right: 6px; color: var(--color-secondary); }

    .article-summary {
      font-size: 17px;
      line-height: 1.85;
      color: rgba(255, 255, 255, 0.7);
      border-left: 3px solid var(--color-primary);
      padding: 16px 20px;
      background: rgba(62, 123, 255, 0.06);
      border-radius: 0 12px 12px 0;
      margin-bottom: 40px;
    }

    /* Article Content */
    .article-content {
      max-width: 780px;
      margin: 0 auto;
      border-bottom: 1px dashed rgba(255, 255, 255, 0.1);
      padding-bottom: 40px;
    }
    .article-content h2 {
      font-size: 1.7rem;
      font-weight: 700;
      margin: 2.8rem 0 1.2rem;
      padding-bottom: 0.8rem;
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
      color: #fff;
    }
    .article-content h3 {
      font-size: 1.3rem;
      font-weight: 700;
      margin: 2.2rem 0 0.9rem;
      color: rgba(255, 255, 255, 0.95);
    }
    .article-content p {
      margin: 1.4rem 0;
      font-size: 16px;
      line-height: 1.9;
      color: rgba(255, 255, 255, 0.8);
    }
    .article-content ul,
    .article-content ol {
      margin: 1.4rem 0;
      padding-left: 1.5rem;
      color: rgba(255, 255, 255, 0.8);
      line-height: 1.85;
    }
    .article-content ul li,
    .article-content ol li { margin: 0.55rem 0; }
    .article-content ul li::marker { color: var(--color-secondary); }
    .article-content blockquote {
      border-left: 3px solid var(--color-primary);
      background: rgba(62, 123, 255, 0.08);
      padding: 1.2rem 1.5rem;
      border-radius: 0 12px 12px 0;
      margin: 1.6rem 0;
      color: rgba(255, 255, 255, 0.78);
    }
    .article-content blockquote p { margin: 0.4rem 0; }
    .article-content img {
      border-radius: 16px;
      margin: 2rem auto;
      box-shadow: var(--shadow-card);
    }
    .article-content a { color: var(--color-secondary); text-decoration: underline; text-underline-offset: 3px; }
    .article-content a:hover { color: #fff; }
    .article-content strong { color: #fff; font-weight: 700; }
    .article-content code {
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(255, 255, 255, 0.1);
      padding: 2px 8px;
      border-radius: 6px;
      font-size: 0.9em;
    }
    .article-content pre {
      background: rgba(0, 0, 0, 0.35);
      border: 1px solid rgba(255, 255, 255, 0.08);
      padding: 20px;
      border-radius: 12px;
      overflow-x: auto;
      margin: 1.6rem 0;
      line-height: 1.7;
    }
    .article-content pre code { background: none; border: none; padding: 0; }

    /* Related */
    .related-section {
      max-width: 1100px;
      margin: 0 auto 72px;
      padding-top: 56px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
    }
    .section-head { text-align: center; margin-bottom: 40px; }
    .section-head h2 {
      font-size: clamp(1.6rem, 3vw, 2.2rem);
      font-weight: 800;
      margin-bottom: 10px;
      color: #fff;
    }
    .section-sub { color: var(--text-secondary); font-size: 15px; }
    .related-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .related-card {
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: 16px;
      overflow: hidden;
      transition: all .3s ease;
      display: flex;
      flex-direction: column;
    }
    .related-card:hover {
      transform: translateY(-4px);
      border-color: rgba(62, 123, 255, 0.5);
      background: rgba(255, 255, 255, 0.06);
      box-shadow: 0 12px 36px rgba(0, 0, 0, 0.3);
    }
    .related-cover { position: relative; overflow: hidden; aspect-ratio: 16 / 9; }
    .related-cover img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform .4s ease;
    }
    .related-card:hover .related-cover img { transform: scale(1.05); }
    .related-badge {
      position: absolute;
      top: 12px; left: 12px;
      padding: 4px 12px;
      background: rgba(9, 14, 23, 0.7);
      backdrop-filter: blur(8px);
      border: 1px solid rgba(255, 255, 255, 0.15);
      border-radius: 999px;
      font-size: 12px;
      font-weight: 600;
      color: rgba(255, 255, 255, 0.85);
    }
    .related-body {
      padding: 20px 22px 22px;
      display: flex;
      flex-direction: column;
      flex: 1;
    }
    .related-body h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; line-height: 1.5; color: #fff; }
    .related-body p {
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.7;
      margin-bottom: 16px;
      flex: 1;
      display: -webkit-box;
      -webkit-line-clamp: 3;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }
    .related-link {
      font-size: 14px;
      font-weight: 600;
      color: var(--color-secondary);
      display: inline-flex;
      align-items: center;
      gap: 8px;
      transition: gap .2s ease, color .2s ease;
    }
    .related-card:hover .related-link { gap: 14px; color: #fff; }

    /* Article actions */
    .article-actions {
      display: flex;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 32px;
    }

    /* Empty state */
    .empty-state {
      text-align: center;
      padding: 80px 24px;
      max-width: 560px;
      margin: 0 auto;
    }
    .empty-icon {
      font-size: 48px;
      color: var(--color-secondary);
      margin-bottom: 24px;
    }
    .empty-state h1 { font-size: 2rem; font-weight: 800; margin-bottom: 12px; color: #fff; }
    .empty-state p { color: var(--text-secondary); margin-bottom: 28px; }

    /* Footer */
    .site-footer {
      background: #060A12;
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding: 64px 0 24px;
      margin-top: 40px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.2fr;
      gap: 48px;
      margin-bottom: 48px;
    }
    .footer-brand .logo { margin-bottom: 16px; }
    .footer-about {
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.8;
      margin-top: 14px;
    }
    .footer-col h4 {
      font-size: 14px;
      font-weight: 700;
      color: rgba(255, 255, 255, 0.92);
      margin-bottom: 18px;
      letter-spacing: 0.02em;
    }
    .footer-links { list-style: none; display: flex; flex-direction: column; gap: 10px; }
    .footer-links a { font-size: 14px; color: var(--text-secondary); transition: color .2s ease; }
    .footer-links a:hover { color: var(--color-secondary); }
    .footer-contact { display: flex; flex-direction: column; gap: 10px; }
    .footer-contact p { font-size: 14px; color: var(--text-secondary); display: flex; align-items: center; }
    .footer-contact i { color: var(--color-secondary); }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
      font-size: 13px;
      color: rgba(255, 255, 255, 0.4);
    }
    .footer-bottom a { color: rgba(255, 255, 255, 0.5); transition: color .2s ease; }
    .footer-bottom a:hover { color: var(--color-secondary); }

    /* Responsive */
    @media (max-width: 1023px) {
      .menu-toggle { display: inline-flex; }
      .nav-links {
        position: absolute;
        top: 72px;
        left: 16px;
        right: 16px;
        z-index: 99;
        flex-direction: column;
        align-items: stretch;
        gap: 4px;
        background: rgba(9, 14, 23, 0.97);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        border: 1px solid rgba(255, 255, 255, 0.1);
        border-radius: 16px;
        padding: 16px;
        opacity: 0;
        visibility: hidden;
        transform: translateY(-10px);
        transition: all .25s ease;
      }
      .nav-links.open { opacity: 1; visibility: visible; transform: translateY(0); }
      .nav-links a {
        padding: 12px 16px;
        border-radius: 10px;
        font-size: 15px;
      }
      .command-search { width: 150px; }
      .command-search:focus-within { width: 190px; }
      .related-grid { grid-template-columns: repeat(2, 1fr); }
      .article-card { padding: 32px; }
      .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
    }

    @media (max-width: 768px) {
      .header-inner { gap: 12px; }
      .command-search { display: none; }
      .search-toggle { display: inline-flex; }
      .header-actions .btn-secondary { display: none; }
      .header-actions .btn-primary { padding: 8px 14px; font-size: 13px; }
      .article-main { padding: 100px 0 48px; }
      .article-card { padding: 24px; border-radius: 14px; }
      .article-title { font-size: clamp(1.5rem, 5vw, 2rem); }
      .article-summary { font-size: 15px; }
      .badge { font-size: 12px; }
      .related-grid { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; gap: 28px; }
      .footer-bottom { flex-direction: column; text-align: center; }
      .breadcrumb { margin-bottom: 24px; }
    }

    @media (max-width: 520px) {
      .container { padding: 0 16px; }
      .header-actions .btn-primary { padding: 8px 12px; font-size: 12px; }
      .article-card { padding: 20px 16px; }
      .article-meta { gap: 12px; flex-direction: column; align-items: center; }
      .related-body { padding: 16px; }
      .article-actions { flex-direction: column; align-items: center; }
      .article-actions a { width: 100%; max-width: 260px; }
      .footer-contact { align-items: flex-start; }
    }