/* roulang page: index */
:root{
  --primary:#2E6B9E;
  --primary-dark:#1D5079;
  --primary-soft:#EAF0F5;
  --gold:#C8A46E;
  --gold-soft:#F7F1E7;
  --bg-light:#F6F8FA;
  --card:#FFFFFF;
  --text:#1F2A37;
  --text-sub:#5D6A79;
  --text-muted:#8A97A5;
  --border:#DCE3EB;
  --border-light:#E5EAF0;
  --radius:16px;
  --radius-lg:24px;
  --shadow-sm:0 1px 2px rgba(31,42,55,.04),0 8px 24px rgba(31,42,55,.06);
  --shadow-md:0 2px 4px rgba(31,42,55,.06),0 18px 42px rgba(31,42,55,.11);
  --section-space:clamp(64px,9vw,120px);
  --font-sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC","Helvetica Neue",Arial,sans-serif;
}
*,
*::before,
*::after{
  box-sizing:border-box;
}
html{
  scroll-behavior:smooth;
}
body{
  margin:0;
  font-family:var(--font-sans);
  color:var(--text);
  background:var(--bg-light);
  font-size:16px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
img{
  max-width:100%;
  height:auto;
}
a{
  color:inherit;
  text-decoration:none;
  transition:color .22s ease,background .22s ease,border-color .22s ease,opacity .22s ease;
}
button{
  font-family:inherit;
}
.grid-container{
  max-width:1220px;
}
section{
  position:relative;
}
.section{
  padding:var(--section-space) 0;
}
.white-section{
  background:var(--card);
}
.section-head{
  max-width:820px;
  margin-bottom:48px;
}
.section-head.center{
  margin-inline:auto;
  text-align:center;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:600;
  letter-spacing:.04em;
  color:var(--primary);
  background:var(--primary-soft);
  border-radius:999px;
  padding:6px 14px;
  margin-bottom:16px;
}
.eyebrow.gold{
  color:#8C6A3F;
  background:var(--gold-soft);
}
.section-head h2{
  font-size:clamp(25px,3.6vw,37px);
  line-height:1.28;
  font-weight:700;
  color:var(--text);
  margin:0 0 14px;
  letter-spacing:.01em;
}
.section-head p{
  font-size:clamp(15px,1.1vw,17px);
  line-height:1.75;
  color:var(--text-sub);
  margin:0;
}

/* buttons */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 26px;
  border-radius:10px;
  font-size:15px;
  font-weight:600;
  line-height:1;
  border:1px solid transparent;
  cursor:pointer;
  transition:all .25s ease;
  white-space:nowrap;
}
.btn-primary{
  background:var(--primary);
  color:#fff;
}
.btn-primary:hover,
.btn-primary:focus{
  background:var(--primary-dark);
  color:#fff;
  transform:translateY(-2px);
  box-shadow:0 6px 18px rgba(46,107,158,.22);
}
.btn-primary:active{
  transform:scale(.98);
}
.btn-outline{
  background:transparent;
  border-color:var(--border);
  color:var(--text);
}
.btn-outline:hover{
  border-color:var(--primary);
  background:rgba(46,107,158,.06);
  color:var(--primary);
}
.btn-white{
  background:#fff;
  color:var(--primary);
}
.btn-white:hover{
  background:var(--primary-soft);
  color:var(--primary-dark);
}
.btn-sm{
  padding:10px 20px;
  font-size:14px;
}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:5px;
  font-weight:600;
  color:var(--primary);
}
.text-link i{
  transition:transform .25s ease;
}
.text-link:hover{
  color:var(--primary-dark);
}
.text-link:hover i{
  transform:translateX(4px);
}

/* header */
.site-header{
  position:absolute;
  top:0;
  left:0;
  right:0;
  z-index:100;
  background:rgba(246,248,250,.60);
  backdrop-filter:blur(18px) saturate(150%);
  -webkit-backdrop-filter:blur(18px) saturate(150%);
  border-bottom:1px solid rgba(255,255,255,.5);
  box-shadow:0 4px 24px rgba(31,42,55,.04);
  transition:background .28s ease,box-shadow .28s ease;
}
.site-header.scrolled{
  position:fixed;
  background:rgba(246,248,250,.92);
  border-bottom-color:var(--border-light);
  box-shadow:0 8px 30px rgba(31,42,55,.08);
}
.header-inner{
  height:76px;
  display:flex;
  align-items:center;
  justify-content:space-between;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  min-width:0;
}
.brand-logo{
  font-size:26px;
  font-weight:800;
  letter-spacing:.02em;
  background:linear-gradient(135deg,var(--primary),var(--primary-dark));
  -webkit-background-clip:text;
  background-clip:text;
  -webkit-text-fill-color:transparent;
  padding-right:2px;
}
.brand-cn{
  font-size:17px;
  font-weight:700;
  color:var(--text);
  letter-spacing:.05em;
  border-left:1px solid var(--border);
  padding-left:10px;
  line-height:1.3;
}
.site-header.scrolled .brand-logo{
  background:linear-gradient(135deg,var(--primary),var(--primary-dark));
  -webkit-background-clip:text;
  background-clip:text;
  -webkit-text-fill-color:transparent;
}
.site-nav{
  display:none;
  align-items:center;
  gap:6px;
}
.nav-link{
  display:inline-block;
  padding:8px 12px;
  font-size:15px;
  font-weight:500;
  color:var(--text);
  border-radius:8px;
  position:relative;
}
.nav-link:hover{
  color:var(--primary);
  background:rgba(46,107,158,.06);
}
.nav-link.active{
  color:var(--primary);
  font-weight:600;
}
.nav-link.active::after{
  content:"";
  position:absolute;
  left:14px;
  right:14px;
  bottom:2px;
  height:2px;
  border-radius:2px;
  background:var(--gold);
}
.header-cta{
  display:none;
}
.nav-toggle{
  display:inline-flex;
  flex-direction:column;
  justify-content:center;
  gap:6px;
  width:44px;
  height:44px;
  border:0;
  background:rgba(255,255,255,.5);
  border-radius:10px;
  cursor:pointer;
  padding:10px;
  align-items:center;
}
.nav-toggle span{
  width:22px;
  height:2px;
  background:var(--text);
  border-radius:2px;
  display:block;
  transition:all .3s ease;
}
.nav-toggle.open span:nth-child(1){
  transform:translateY(8px) rotate(45deg);
}
.nav-toggle.open span:nth-child(2){
  opacity:0;
}
.nav-toggle.open span:nth-child(3){
  transform:translateY(-8px) rotate(-45deg);
}
.mobile-panel{
  display:none;
  position:absolute;
  left:0;
  right:0;
  top:100%;
  background:rgba(246,248,250,.97);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--border);
  box-shadow:0 16px 40px rgba(31,42,55,.10);
}
.mobile-panel.open{
  display:block;
}
.mobile-nav-list{
  display:flex;
  flex-direction:column;
  padding:12px 0 18px;
}
.mobile-nav-list a{
  padding:13px 0;
  font-size:16px;
  font-weight:600;
  color:var(--text);
  border-bottom:1px solid rgba(220,227,235,.6);
}
.mobile-nav-list a:last-child{
  border-bottom:0;
}
.mobile-nav-list a.active{
  color:var(--primary);
}
.mobile-panel .btn-mobile{
  margin:6px 0 8px;
}
@media screen and (min-width:1024px){
  .site-nav{
    display:flex;
  }
  .header-cta{
    display:block;
  }
  .nav-toggle{
    display:none;
  }
  .mobile-panel{
    display:none !important;
  }
}

/* hero */
.hero{
  position:relative;
  overflow:hidden;
  padding:170px 0 100px;
  background:#E7EDF3;
}
.hero-bg{
  position:absolute;
  inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
  z-index:0;
}
.hero-bg::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(100deg,rgba(246,248,250,.95) 8%,rgba(234,240,245,.88) 50%,rgba(234,240,245,.42) 100%);
}
.hero-inner{
  position:relative;
  z-index:2;
}
.hero-badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  font-weight:600;
  color:var(--primary);
  background:rgba(255,255,255,.72);
  border:1px solid rgba(255,255,255,.8);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-radius:999px;
  padding:7px 16px;
  margin-bottom:24px;
  box-shadow:0 2px 10px rgba(31,42,55,.05);
}
.hero-badge i{
  color:var(--gold);
}
.hero h1{
  font-size:clamp(32px,5vw,50px);
  line-height:1.2;
  font-weight:800;
  color:var(--text);
  max-width:760px;
  margin:0 0 20px;
  letter-spacing:-.01em;
}
.hero-sub{
  font-size:clamp(16px,1.4vw,19px);
  color:var(--text-sub);
  max-width:680px;
  margin:0 0 34px;
  line-height:1.8;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  align-items:center;
  margin-bottom:30px;
}
.hero-trust{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
}
.trust-item{
  font-size:13px;
  font-weight:600;
  color:var(--text-sub);
  background:rgba(255,255,255,.68);
  border:1px solid rgba(220,227,235,.7);
  border-radius:999px;
  padding:6px 13px;
  display:inline-flex;
  align-items:center;
  gap:7px;
}
.trust-item i{
  color:var(--primary);
}

/* features */
.features-grid{
  display:grid;
  grid-template-columns:repeat(1,1fr);
  gap:22px;
}
.feature-card{
  background:var(--card);
  border:1px solid var(--border-light);
  border-radius:var(--radius);
  padding:30px 26px;
  box-shadow:var(--shadow-sm);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.feature-card:hover{
  transform:translateY(-5px);
  box-shadow:var(--shadow-md);
  border-color:rgba(46,107,158,.2);
}
.feature-icon{
  width:50px;
  height:50px;
  border-radius:14px;
  background:var(--primary-soft);
  color:var(--primary);
  font-size:21px;
  display:flex;
  align-items:center;
  justify-content:center;
  margin-bottom:20px;
}
.feature-icon i{
  line-height:1;
}
.feature-card h3{
  font-size:18px;
  font-weight:700;
  color:var(--text);
  margin:0 0 8px;
}
.feature-card p{
  font-size:14px;
  line-height:1.72;
  color:var(--text-sub);
  margin:0;
}
@media screen and (min-width:640px){
  .features-grid{
    grid-template-columns:repeat(2,1fr);
  }
}
@media screen and (min-width:1024px){
  .features-grid{
    grid-template-columns:repeat(4,1fr);
    gap:24px;
  }
}

/* categories */
.category-card{
  position:relative;
  display:block;
  background:var(--card);
  border:1px solid var(--border-light);
  border-radius:var(--radius);
  overflow:hidden;
  height:100%;
  box-shadow:var(--shadow-sm);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.category-card:hover{
  transform:translateY(-6px);
  box-shadow:var(--shadow-md);
  border-color:rgba(46,107,158,.2);
}
.category-covers{
  height:176px;
  background:#EDF2F7;
  overflow:hidden;
  position:relative;
}
.category-covers img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .35s ease;
}
.category-card:hover .category-covers img{
  transform:scale(1.04);
}
.category-body{
  padding:24px 22px 28px;
}
.category-body h3{
  font-size:19px;
  font-weight:700;
  color:var(--text);
  margin:0 0 10px;
}
.category-body p{
  font-size:14px;
  line-height:1.7;
  color:var(--text-sub);
  margin:0 0 18px;
}
.category-more{
  font-size:14px;
  font-weight:600;
  color:var(--primary);
  display:inline-flex;
  align-items:center;
  gap:6px;
}
.category-more i{
  transition:transform .25s ease;
}
.category-card:hover .category-more i{
  transform:translateX(5px);
}

/* steps */
.steps-wrap{
  background:var(--card);
  border:1px solid var(--border-light);
  border-radius:var(--radius-lg);
  padding:clamp(28px,4vw,52px);
  box-shadow:var(--shadow-sm);
}
.step-list{
  display:grid;
  grid-template-columns:repeat(1,1fr);
  gap:24px;
  counter-reset:step;
}
.step-item{
  position:relative;
  padding:22px 22px 26px 76px;
  background:var(--bg-light);
  border-radius:var(--radius);
  border:1px solid var(--border-light);
}
.step-item::before{
  counter-increment:step;
  content:counter(step,decimal-leading-zero);
  position:absolute;
  left:20px;
  top:22px;
  width:42px;
  height:42px;
  background:var(--primary-soft);
  color:var(--primary);
  font-weight:800;
  font-size:16px;
  border-radius:12px;
  display:flex;
  align-items:center;
  justify-content:center;
  letter-spacing:.03em;
}
.step-item h3{
  font-size:17px;
  font-weight:700;
  color:var(--text);
  margin:0 0 8px;
}
.step-item p{
  font-size:14px;
  line-height:1.7;
  color:var(--text-sub);
  margin:0;
}
@media screen and (min-width:768px){
  .step-list{
    grid-template-columns:repeat(3,1fr);
    gap:18px;
  }
  .step-item{
    padding:78px 22px 24px;
    text-align:center;
  }
  .step-item::before{
    top:22px;
    left:50%;
    transform:translateX(-50%);
  }
}

/* stats */
.stats-section{
  padding:0 0 var(--section-space);
}
.stats-panel{
  background:var(--primary-soft);
  border-radius:var(--radius-lg);
  padding:clamp(30px,5vw,64px) clamp(20px,4vw,60px);
  display:grid;
  grid-template-columns:repeat(1,1fr);
  gap:28px;
  position:relative;
  overflow:hidden;
}
.stats-panel::after{
  content:"";
  position:absolute;
  right:-80px;
  top:-100px;
  width:260px;
  height:260px;
  border-radius:50%;
  background:rgba(255,255,255,.28);
}
.stats-panel::before{
  content:"";
  position:absolute;
  left:-40px;
  bottom:-90px;
  width:180px;
  height:180px;
  border-radius:50%;
  background:rgba(200,164,110,.15);
}
.stat-item{
  position:relative;
  z-index:1;
  text-align:center;
}
.stat-num{
  font-size:clamp(34px,4vw,50px);
  font-weight:800;
  color:var(--primary-dark);
  line-height:1.1;
  font-variant-numeric:tabular-nums;
  letter-spacing:-.02em;
}
.stat-label{
  display:block;
  margin-top:6px;
  color:var(--text-sub);
  font-size:14px;
}
@media screen and (min-width:640px){
  .stats-panel{
    grid-template-columns:repeat(2,1fr);
  }
}
@media screen and (min-width:1024px){
  .stats-panel{
    grid-template-columns:repeat(4,1fr);
  }
}

/* testimonials */
.testimonial-card{
  background:var(--card);
  border:1px solid var(--border-light);
  border-radius:var(--radius);
  box-shadow:var(--shadow-sm);
  padding:30px 28px;
  height:100%;
  display:flex;
  flex-direction:column;
  transition:transform .25s ease,box-shadow .25s ease;
}
.testimonial-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-md);
}
.quote-icon{
  font-size:34px;
  line-height:1;
  color:var(--gold);
  opacity:.8;
  margin-bottom:14px;
  font-family:Georgia,serif;
  height:36px;
}
.testimonial-card .stars{
  color:var(--gold);
  font-size:14px;
  letter-spacing:2px;
  margin-bottom:12px;
}
.testimonial-card blockquote{
  margin:0 0 24px;
  padding:0;
  border:0;
  font-size:15px;
  line-height:1.8;
  color:var(--text);
}
.testimonial-person{
  margin-top:auto;
  border-top:1px solid var(--border-light);
  padding-top:18px;
  display:flex;
  align-items:center;
  gap:14px;
}
.person-avatar{
  width:44px;
  height:44px;
  border-radius:50%;
  background:var(--primary-soft);
  color:var(--primary);
  font-weight:700;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:16px;
}
.person-info{
  line-height:1.35;
}
.person-name{
  font-size:15px;
  font-weight:700;
  color:var(--text);
}
.person-role{
  font-size:13px;
  color:var(--text-muted);
}

/* latest news */
.news-card{
  background:var(--card);
  border:1px solid var(--border-light);
  border-radius:var(--radius);
  overflow:hidden;
  height:100%;
  display:flex;
  flex-direction:column;
  box-shadow:var(--shadow-sm);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.news-card:hover{
  transform:translateY(-5px);
  box-shadow:var(--shadow-md);
  border-color:rgba(46,107,158,.18);
}
.news-thumb{
  background:#EAF0F5;
  height:170px;
  overflow:hidden;
}
.news-thumb img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .35s ease;
}
.news-card:hover .news-thumb img{
  transform:scale(1.04);
}
.news-body{
  padding:22px 24px 24px;
  display:flex;
  flex-direction:column;
  flex:1;
}
.news-meta{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:12px;
  font-size:13px;
}
.news-cat{
  display:inline-flex;
  align-items:center;
  background:var(--primary-soft);
  color:var(--primary);
  font-weight:600;
  font-size:12px;
  padding:3px 10px;
  border-radius:999px;
  white-space:nowrap;
}
.news-time{
  color:var(--text-muted);
  white-space:nowrap;
}
.news-title{
  font-size:18px;
  line-height:1.5;
  font-weight:700;
  color:var(--text);
  margin:0 0 10px;
}
.news-title a:hover{
  color:var(--primary);
}
.news-excerpt{
  font-size:14px;
  color:var(--text-sub);
  line-height:1.7;
  margin:0 0 18px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-more{
  margin-top:auto;
  font-size:14px;
  font-weight:600;
  color:var(--primary);
  display:inline-flex;
  align-items:center;
  gap:7px;
}
.news-more i{
  transition:transform .25s ease;
}
.news-card:hover .news-more i{
  transform:translateX(5px);
}
.empty-state{
  border:1px dashed var(--text-muted);
  border-radius:var(--radius);
  padding:60px 20px;
  text-align:center;
  color:var(--text-sub);
  background:#fff;
}
.empty-state i{
  font-size:38px;
  color:var(--primary);
  opacity:.6;
  display:block;
  margin-bottom:16px;
}
.empty-state .btn{
  margin-top:20px;
}

/* faq */
.faq-section{
  background:var(--card);
}
.faq-list{
  max-width:820px;
  margin:0 auto;
}
.faq-item{
  border:1px solid var(--border-light);
  border-radius:var(--radius);
  background:var(--bg-light);
  margin-bottom:14px;
  overflow:hidden;
  transition:border-color .25s ease,box-shadow .25s ease;
}
.faq-item.open{
  border-color:rgba(46,107,158,.25);
  box-shadow:var(--shadow-sm);
}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  background:transparent;
  border:0;
  padding:20px 22px;
  font-size:16px;
  font-weight:600;
  text-align:left;
  color:var(--text);
  cursor:pointer;
}
.faq-q:hover{
  color:var(--primary);
}
.faq-q .faq-icon{
  flex:0 0 30px;
  width:30px;
  height:30px;
  border-radius:50%;
  background:var(--primary);
  color:#fff;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:15px;
  transition:transform .3s ease,background .3s ease;
}
.faq-item.open .faq-q .faq-icon{
  transform:rotate(45deg);
  background:var(--gold);
}
.faq-q .faq-icon i{
  pointer-events:none;
}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .35s ease;
}
.faq-inner{
  padding:0 22px 22px;
  font-size:15px;
  color:var(--text-sub);
  line-height:1.8;
}
.faq-inner p{
  margin:0 0 8px;
}
.faq-inner p:last-child{
  margin:0;
}

/* CTA */
.cta-section{
  padding-bottom:var(--section-space);
}
.cta-panel{
  position:relative;
  background:var(--primary);
  border-radius:var(--radius-lg);
  padding:clamp(40px,7vw,80px);
  color:#fff;
  text-align:center;
  overflow:hidden;
  box-shadow:0 22px 50px rgba(46,107,158,.24);
}
.cta-panel::before{
  content:"";
  position:absolute;
  right:-120px;
  top:-120px;
  width:330px;
  height:330px;
  border-radius:50%;
  background:rgba(255,255,255,.14);
}
.cta-panel::after{
  content:"";
  position:absolute;
  left:-60px;
  bottom:-80px;
  width:180px;
  height:180px;
  border-radius:50%;
  background:rgba(200,164,110,.22);
}
.cta-panel > *{
  position:relative;
  z-index:2;
}
.cta-panel h2{
  font-size:clamp(24px,3.4vw,36px);
  line-height:1.3;
  margin:0 0 16px;
  font-weight:700;
}
.cta-panel p{
  color:rgba(255,255,255,.88);
  max-width:600px;
  margin:0 auto 30px;
  font-size:16px;
}
.cta-actions{
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
  gap:14px;
}
.cta-actions .btn-outline-white{
  background:transparent;
  border-color:rgba(255,255,255,.75);
  color:#fff;
}
.cta-actions .btn-outline-white:hover{
  background:rgba(255,255,255,.14);
  border-color:#fff;
  color:#fff;
}

/* footer */
.site-footer{
  background:#17222E;
  color:rgba(255,255,255,.72);
  padding:70px 0 0;
  font-size:14px;
  line-height:1.8;
}
.footer-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:36px;
  padding-bottom:50px;
}
.footer-brand .brand-logo{
  font-size:25px;
  font-weight:800;
  color:#fff;
  background:none;
  -webkit-text-fill-color:#fff;
}
.footer-brand .brand-cn{
  color:#fff;
  border-left-color:rgba(255,255,255,.24);
}
.footer-brand p{
  color:rgba(255,255,255,.6);
  margin-top:18px;
  font-size:14px;
  max-width:320px;
}
.footer-title{
  color:#fff;
  font-size:17px;
  font-weight:600;
  margin:0 0 18px;
}
.footer-links{
  list-style:none;
  margin:0;
  padding:0;
}
.footer-links li{
  margin-bottom:8px;
}
.footer-links a{
  color:rgba(255,255,255,.65);
}
.footer-links a:hover{
  color:#fff;
}
.footer-info p{
  margin:0 0 8px;
  color:rgba(255,255,255,.6);
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding:24px 0;
  text-align:center;
  font-size:13px;
  color:rgba(255,255,255,.5);
}
@media screen and (min-width:640px){
  .footer-grid{
    grid-template-columns:repeat(2,1fr);
  }
}
@media screen and (min-width:1024px){
  .footer-grid{
    grid-template-columns:1.4fr 1fr 1fr 1.2fr;
    gap:48px;
  }
}

/* responsive spacing */
@media screen and (max-width:639px){
  .hero{
    padding:148px 0 72px;
  }
  .hero-actions .btn{
    width:100%;
  }
  .category-covers{
    height:160px;
  }
}

/* roulang page: category1 */
:root {
    --primary: #2E6B9E;
    --primary-dark: #1D5079;
    --accent: #C8A46E;
    --bg: #F6F8FA;
    --bg-deep: #EAF0F5;
    --surface: #FFFFFF;
    --text: #1F2A37;
    --text-secondary: #5D6A79;
    --text-muted: #8A97A5;
    --border: #DCE3EB;
    --border-light: #E5EAF0;
    --radius: 14px;
    --radius-lg: 20px;
    --radius-xl: 26px;
    --shadow-sm: 0 1px 2px rgba(31,42,55,.04), 0 8px 24px rgba(31,42,55,.06);
    --shadow-hover: 0 2px 4px rgba(31,42,55,.06), 0 18px 42px rgba(31,42,55,.11);
    --transition: .25s ease;
    --header-h: 76px;
    --container: 1180px;
  }

  * {
    box-sizing: border-box;
  }

  html {
    scroll-behavior: smooth;
    scroll-padding-top: 90px;
  }

  body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
  }

  img {
    max-width: 100%;
    display: block;
  }

  a {
    color: var(--primary);
    text-decoration: none;
    transition: color var(--transition);
  }

  a:hover {
    color: var(--primary-dark);
  }

  button, input, textarea, select {
    font-family: inherit;
  }

  .grid-container {
    max-width: var(--container);
  }

  .eyebrow {
    display: inline-block;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: .08em;
    color: var(--primary);
    background: rgba(46, 107, 158, .08);
    border-radius: 999px;
    padding: 6px 14px;
    margin-bottom: 14px;
    text-transform: uppercase;
  }

  .section {
    padding: clamp(64px, 8vw, 104px) 0;
  }

  .section-title {
    font-size: clamp(26px, 3.4vw, 36px);
    line-height: 1.3;
    font-weight: 700;
    margin: 10px 0 18px;
    color: var(--text);
  }

  .section-subtitle {
    color: var(--text-secondary);
    font-size: clamp(15px, 1.1vw, 17px);
    max-width: 780px;
    margin-bottom: 40px;
  }

  /* Header */
  .site-header {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    height: var(--header-h);
    background: rgba(255, 255, 255, .64);
    backdrop-filter: blur(16px) saturate(150%);
    -webkit-backdrop-filter: blur(16px) saturate(150%);
    border-bottom: 1px solid rgba(255, 255, 255, .42);
    box-shadow: 0 4px 24px rgba(31, 42, 55, .04);
    transition: background var(--transition), box-shadow var(--transition);
  }

  .site-header.scrolled {
    position: fixed;
    background: rgba(246, 248, 250, .88);
    box-shadow: 0 8px 30px rgba(31, 42, 55, .08);
    border-bottom-color: rgba(220, 227, 235, .6);
  }

  .header-row {
    height: var(--header-h);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
  }

  .brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
    min-height: 48px;
  }

  .brand-logo {
    background: var(--primary);
    color: #fff;
    font-weight: 700;
    font-size: 20px;
    letter-spacing: .02em;
    border-radius: 12px;
    padding: 8px 12px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
    box-shadow: 0 8px 18px rgba(46, 107, 158, .24);
  }

  .brand-cn {
    font-size: 22px;
    font-weight: 700;
    letter-spacing: .05em;
    color: var(--text);
    line-height: 1.2;
  }

  .site-nav {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-left: auto;
  }

  .nav-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 10px 16px;
    border-radius: 10px;
    color: var(--text);
    font-size: 15px;
    font-weight: 500;
    line-height: 1.2;
    position: relative;
    transition: color var(--transition), background var(--transition);
  }

  .nav-link::after {
    content: "";
    width: 20px;
    height: 2px;
    background: transparent;
    border-radius: 2px;
    position: absolute;
    bottom: 7px;
    left: 50%;
    transform: translateX(-50%);
    transition: background var(--transition);
  }

  .nav-link:hover {
    color: var(--primary);
    background: rgba(46, 107, 158, .06);
  }

  .nav-link.active {
    color: var(--primary);
    font-weight: 600;
  }

  .nav-link.active::after {
    background: var(--primary);
  }

  .header-cta-wrap {
    display: flex;
    align-items: center;
    gap: 12px;
  }

  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border-radius: 10px;
    font-size: 15px;
    font-weight: 600;
    line-height: 1.2;
    padding: 12px 24px;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
  }

  .btn-main {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 10px 24px rgba(46, 107, 158, .18);
  }

  .btn-main:hover {
    background: var(--primary-dark);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 14px 30px rgba(46, 107, 158, .24);
  }

  .btn-main:active {
    transform: scale(.98);
  }

  .btn-ghost {
    background: rgba(255, 255, 255, .74);
    color: var(--text);
    border-color: var(--border);
  }

  .btn-ghost:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: #f4f8fb;
  }

  .btn-light {
    background: #fff;
    color: var(--primary);
  }

  .btn-light:hover {
    background: #f2f7fb;
    color: var(--primary-dark);
    transform: translateY(-2px);
  }

  .btn-outline-light {
    background: transparent;
    color: #fff;
    border: 1px solid rgba(255, 255, 255, .62);
  }

  .btn-outline-light:hover {
    background: rgba(255, 255, 255, .1);
    color: #fff;
    border-color: #fff;
    transform: translateY(-2px);
  }

  .link-arrow {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-weight: 600;
  }

  .link-arrow .arrow-ico {
    transition: transform var(--transition);
  }

  .link-arrow:hover .arrow-ico {
    transform: translateX(4px);
  }

  .header-cta {
    min-height: 44px;
    padding: 11px 20px;
    border-radius: 10px;
    background: var(--primary);
    color: #fff;
    font-size: 15px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
  }

  .header-cta:hover {
    background: var(--primary-dark);
    color: #fff;
  }

  .nav-burger {
    display: none;
    width: 48px;
    height: 48px;
    border: 0;
    background: transparent;
    border-radius: 10px;
    cursor: pointer;
    align-items: center;
    justify-content: center;
  }

  .nav-burger .bar {
    width: 20px;
    height: 2px;
    background: var(--text);
    display: block;
    border-radius: 2px;
    transition: all var(--transition);
  }

  .nav-burger .bar + .bar {
    margin-top: 5px;
  }

  /* Page Hero */
  .page-hero {
    position: relative;
    padding: calc(var(--header-h) + clamp(34px, 6vw, 74px)) 0 clamp(38px, 5vw, 64px);
    color: #fff;
    overflow: hidden;
    background:
      linear-gradient(112deg, rgba(29, 80, 121, .88) 0%, rgba(46, 107, 158, .74) 58%, rgba(200, 164, 110, .30) 100%),
      url('/assets/images/backpic/back-1.webp') center 22% / cover no-repeat;
  }

  .page-hero::after {
    content: "";
    position: absolute;
    inset: auto -12% -36% auto;
    width: 44%;
    height: 220%;
    background: rgba(255, 255, 255, .055);
    transform: rotate(24deg);
    border-radius: 36px;
    pointer-events: none;
  }

  .page-hero .grid-container {
    position: relative;
    z-index: 2;
  }

  .breadcrumb {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    color: rgba(255, 255, 255, .82);
    font-size: 14px;
    margin-bottom: 26px;
    padding: 10px 0;
  }

  .breadcrumb a {
    color: rgba(255, 255, 255, .88);
  }

  .breadcrumb a:hover {
    color: #fff;
    text-decoration: underline;
  }

  .breadcrumb .sep {
    opacity: .7;
  }

  .page-hero h1 {
    font-size: clamp(32px, 5.6vw, 52px);
    line-height: 1.2;
    margin: 0 0 18px;
    font-weight: 700;
    max-width: 860px;
    color: #fff;
    letter-spacing: .02em;
  }

  .page-hero .hero-lead {
    font-size: clamp(16px, 1.5vw, 20px);
    line-height: 1.7;
    max-width: 720px;
    color: rgba(255, 255, 255, .9);
    margin-bottom: 30px;
  }

  .page-hero .hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    align-items: center;
  }

  .hero-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 30px;
  }

  .hero-badge {
    background: rgba(255, 255, 255, .12);
    border: 1px solid rgba(255, 255, 255, .24);
    border-radius: 999px;
    padding: 7px 16px;
    font-size: 13px;
    color: rgba(255, 255, 255, .92);
    backdrop-filter: blur(8px);
  }

  /* Overview */
  .overview-wrap {
    display: grid;
    grid-template-columns: 1.05fr .95fr;
    gap: clamp(28px, 5vw, 64px);
    align-items: center;
  }

  .overview-content .lead {
    font-size: 18px;
    line-height: 1.8;
    color: var(--text);
    margin-bottom: 24px;
  }

  .overview-content p {
    color: var(--text-secondary);
    margin-bottom: 18px;
  }

  .overview-points {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
    margin-top: 32px;
  }

  .point-chip {
    background: var(--surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius);
    padding: 22px;
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--transition), transform var(--transition);
  }

  .point-chip:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-2px);
  }

  .point-chip .ico {
    width: 42px;
    height: 42px;
    border-radius: 12px;
    background: rgba(46, 107, 158, .1);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 20px;
    margin-bottom: 14px;
  }

  .point-chip h3 {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 6px;
  }

  .point-chip p {
    font-size: 14px;
    color: var(--text-secondary);
    margin: 0;
    line-height: 1.65;
  }

  .overview-visual {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-hover);
  }

  .overview-visual img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    aspect-ratio: 4 / 3;
  }

  .overview-visual .float-note {
    position: absolute;
    bottom: 18px;
    left: 18px;
    background: rgba(255, 255, 255, .92);
    border-radius: 14px;
    padding: 14px 18px;
    font-size: 14px;
    color: var(--text);
    box-shadow: var(--shadow-hover);
    backdrop-filter: blur(8px);
  }

  /* Entry cards */
  .entries-section {
    background: var(--surface);
  }

  .entry-cards {
    display: flex;
    flex-wrap: wrap;
    margin: 0 -12px;
  }

  .entry-cards .cell {
    padding: 12px;
  }

  .entry-card {
    height: 100%;
    background: var(--bg);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 0;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
  }

  .entry-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-hover);
    border-color: rgba(46, 107, 158, .28);
  }

  .entry-card-media {
    width: 100%;
    aspect-ratio: 3 / 2;
    overflow: hidden;
    background: #EDF2F7;
    background-image: linear-gradient(135deg, #EAF0F5, #F6F8FA);
  }

  .entry-card-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .45s ease;
  }

  .entry-card:hover .entry-card-media img {
    transform: scale(1.04);
  }

  .entry-card-body {
    padding: 24px;
    background: var(--surface);
  }

  .entry-card-body h3 {
    font-size: 19px;
    font-weight: 700;
    margin: 0 0 10px;
    color: var(--text);
  }

  .entry-card-body p {
    font-size: 14.5px;
    line-height: 1.75;
    color: var(--text-secondary);
    margin: 0;
  }

  .card-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 18px;
    font-size: 13px;
    color: var(--primary);
    font-weight: 600;
  }

  /* Split feature blocks */
  .feature-block {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: clamp(30px, 5vw, 66px);
  }

  .feature-block.reverse .feature-img {
    order: 2;
  }

  .feature-imgs {
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-hover);
    background: #EAF0F5;
  }

  .feature-imgs img {
    width: 100%;
    aspect-ratio: 4/3;
    object-fit: cover;
  }

  .feature-content h2 {
    font-size: clamp(24px, 2.8vw, 34px);
    line-height: 1.35;
    margin: 12px 0 16px;
  }

  .feature-content p {
    color: var(--text-secondary);
    margin-bottom: 20px;
  }

  .check-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 16px;
  }

  .check-list li {
    position: relative;
    padding-left: 34px;
    color: var(--text);
    font-weight: 500;
    font-size: 15px;
  }

  .check-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    top: 0;
    width: 24px;
    height: 24px;
    background: rgba(46, 107, 158, .1);
    color: var(--primary);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 700;
  }

  .check-list span {
    display: block;
    font-weight: 400;
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.7;
    margin-top: 3px;
  }

  /* FAQ */
  .faq-section {
    background: var(--surface);
  }

  .faq-panel {
    max-width: 880px;
  }

  .faq-item {
    margin-bottom: 16px;
    border: 1px solid var(--border-light);
    border-radius: var(--radius);
    background: var(--surface);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: border-color var(--transition), box-shadow var(--transition);
  }

  .faq-item:hover {
    border-color: rgba(46, 107, 158, .26);
    box-shadow: var(--shadow-hover);
  }

  .faq-toggle {
    width: 100%;
    border: 0;
    background: transparent;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    text-align: left;
    padding: 20px 24px;
    cursor: pointer;
    font-size: 17px;
    font-weight: 600;
    color: var(--text);
    line-height: 1.5;
    border-radius: var(--radius);
    transition: background var(--transition);
  }

  .faq-toggle:hover {
    background: rgba(46, 107, 158, .03);
  }

  .faq-toggle:focus-visible {
    outline: 3px solid rgba(46, 107, 158, .22);
    outline-offset: -2px;
  }

  .faq-icon {
    width: 28px;
    height: 28px;
    flex: 0 0 28px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: var(--primary);
    background: rgba(46, 107, 158, .08);
    transition: transform var(--transition), background var(--transition);
  }

  .faq-item.open .faq-icon {
    transform: rotate(45deg);
    background: var(--primary);
    color: #fff;
  }

  .faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height .35s ease;
  }

  .faq-answer-inner {
    padding: 0 24px 24px;
    color: var(--text-secondary);
    font-size: 15px;
    line-height: 1.8;
  }

  .faq-answer-inner p {
    margin: 0 0 10px;
  }

  /* CTA */
  .cta-zone {
    padding: clamp(56px, 8vw, 110px) 0;
    background: var(--bg);
  }

  .cta-card {
    background:
      radial-gradient(circle at 14% 18%, rgba(255, 255, 255, .16), transparent 28%),
      radial-gradient(circle at 85% 20%, rgba(200, 164, 110, .18), transparent 22%),
      var(--primary);
    border-radius: var(--radius-xl);
    padding: clamp(36px, 6vw, 68px);
    color: #fff;
    box-shadow: 0 22px 60px rgba(29, 80, 121, .24);
    position: relative;
    overflow: hidden;
  }

  .cta-card::after {
    content: "";
    position: absolute;
    inset: auto -80px -180px auto;
    width: 320px;
    height: 320px;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, .16);
    pointer-events: none;
  }

  .cta-card h2 {
    font-size: clamp(26px, 3.6vw, 36px);
    margin-bottom: 16px;
    color: #fff;
  }

  .cta-card p {
    font-size: clamp(15px, 1.3vw, 18px);
    color: rgba(255, 255, 255, .84);
    max-width: 680px;
    margin-bottom: 30px;
  }

  .cta-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
  }

  /* Footer */
  .site-footer {
    background: #17222E;
    color: #94A5B8;
    font-size: 15px;
    line-height: 1.8;
  }

  .site-footer a {
    color: #94A5B8;
  }

  .site-footer a:hover {
    color: #fff;
  }

  .footer-grid {
    display: grid;
    grid-template-columns: 1.5fr .8fr .8fr 1.1fr;
    gap: clamp(30px, 4vw, 62px);
    padding: clamp(44px, 6vw, 72px) 0 38px;
  }

  .footer-brand .brand {
    margin-bottom: 16px;
  }

  .footer-brand .brand-cn {
    color: #fff;
  }

  .footer-brand p {
    margin-top: 14px;
    max-width: 360px;
    color: #8899AB;
  }

  .footer-title {
    font-size: 18px;
    color: #fff;
    margin-bottom: 18px;
    font-weight: 600;
  }

  .footer-links {
    list-style: none;
    margin: 0;
    padding: 0;
  }

  .footer-links li {
    margin-bottom: 9px;
  }

  .footer-info p {
    margin: 0 0 8px;
    color: #94A5B8;
    font-size: 14px;
  }

  .footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, .08);
    padding: 22px 0;
    color: #6E7F93;
    font-size: 13px;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 10px;
  }

  @media screen and (max-width: 1023px) {
    .header-row {
      gap: 12px;
    }

    .nav-burger {
      display: flex;
    }

    .site-header {
      background: rgba(246, 248, 250, .92);
      position: fixed;
      box-shadow: 0 4px 16px rgba(31, 42, 55, .06);
    }

    .header-row {
      position: relative;
    }

    .site-nav {
      position: absolute;
      top: calc(var(--header-h) - 8px);
      left: 0;
      right: 0;
      box-shadow: 0 18px 46px rgba(31, 42, 55, .14);
      background: rgba(255, 255, 255, .96);
      backdrop-filter: blur(16px);
      border: 1px solid var(--border-light);
      border-top: 0;
      border-radius: 0 0 16px 16px;
      display: none;
      flex-direction: column;
      align-items: stretch;
      padding: 12px;
      margin: 0;
      gap: 4px;
    }

    body.nav-open .site-nav {
      display: flex;
    }

    .nav-link {
      width: 100%;
      justify-content: flex-start;
      padding: 13px 16px;
    }

    .nav-link::after {
      display: none;
    }

    .header-cta-wrap {
      display: none;
    }

    .page-hero {
      padding-top: calc(var(--header-h) + 40px);
    }

    .overview-wrap,
    .feature-block {
      grid-template-columns: 1fr;
    }

    .feature-block.reverse .feature-img {
      order: 0;
    }

    .footer-grid {
      grid-template-columns: 1fr 1fr;
    }
  }

  @media screen and (max-width: 640px) {
    :root {
      --header-h: 68px;
    }

    .page-hero {
      padding-top: calc(var(--header-h) + 32px);
    }

    .hero-actions .btn {
      width: 100%;
    }

    .overview-points {
      grid-template-columns: 1fr;
    }

    .section-title {
      margin-top: 8px;
    }

    .cta-card {
      text-align: center;
    }

    .cta-actions {
      flex-direction: column;
      align-items: stretch;
    }

    .cta-actions .btn {
      width: 100%;
    }

    .footer-grid {
      grid-template-columns: 1fr;
      padding-top: 42px;
    }

    .footer-bottom {
      flex-direction: column;
    }
  }

/* roulang page: article */
:root {
            --primary: #2E6B9E;
            --primary-dark: #1D5079;
            --primary-light: #EAF0F5;
            --accent: #C8A46E;
            --bg: #F6F8FA;
            --card: #FFFFFF;
            --sub-bg: #EAF0F5;
            --text: #1F2A37;
            --text-secondary: #5D6A79;
            --muted: #8A97A5;
            --border: #DCE3EB;
            --border-light: #E5EAF0;
            --footer-bg: #17222E;
            --footer-text: #94A5B8;
            --radius: 14px;
            --radius-lg: 20px;
            --shadow-sm: 0 1px 2px rgba(31,42,55,.04), 0 8px 24px rgba(31,42,55,.06);
            --shadow-lg: 0 2px 4px rgba(31,42,55,.06), 0 16px 40px rgba(31,42,55,.10);
            --font-main: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: var(--font-main);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
        }

        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(46, 107, 158, .35);
            outline-offset: 2px;
            border-radius: 6px;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: clamp(16px, 3vw, 32px);
            padding-right: clamp(16px, 3vw, 32px);
            width: 100%;
        }

        .grid-container {
            max-width: 1200px;
        }

        /* ======= 按钮 ======= */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: 8px;
            padding: 12px 24px;
            font-size: 15px;
            font-weight: 600;
            line-height: 1.4;
            border: 1px solid transparent;
            cursor: pointer;
            transition: background .25s ease, color .25s ease, border-color .25s ease, transform .15s ease, box-shadow .25s ease;
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 6px 16px rgba(46, 107, 158, .22);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            box-shadow: 0 10px 24px rgba(29, 80, 121, .24);
            transform: translateY(-1px);
        }

        .btn-primary:active {
            transform: scale(.98);
        }

        .btn-secondary {
            background: #fff;
            border-color: var(--border);
            color: var(--text);
        }

        .btn-secondary:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: #F2F7FB;
        }

        .btn-ghost-light {
            background: transparent;
            border-color: rgba(255, 255, 255, .7);
            color: #fff;
        }

        .btn-ghost-light:hover {
            background: rgba(255, 255, 255, .12);
            color: #fff;
        }

        .btn .arrow {
            transition: transform .2s ease;
        }

        .btn:hover .arrow {
            transform: translateX(4px);
        }

        /* ======= Header ======= */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, .62);
            -webkit-backdrop-filter: blur(18px) saturate(150%);
            backdrop-filter: blur(18px) saturate(150%);
            border-bottom: 1px solid rgba(255, 255, 255, .4);
            box-shadow: 0 4px 24px rgba(31, 42, 55, .04);
            transition: background .3s ease, box-shadow .3s ease;
        }

        .site-header.is-scrolled {
            background: rgba(246, 248, 250, .88);
            box-shadow: 0 8px 30px rgba(31, 42, 55, .07);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            height: 72px;
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
            flex-shrink: 0;
        }

        .brand-logo {
            display: grid;
            place-items: center;
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: var(--primary);
            color: #fff;
            font-size: 17px;
            font-weight: 800;
            letter-spacing: .5px;
            box-shadow: 0 6px 16px rgba(46, 107, 158, .24);
        }

        .brand-cn {
            color: var(--text);
            font-size: 20px;
            font-weight: 700;
            letter-spacing: .5px;
            line-height: 1.2;
        }

        .brand-cn small {
            display: block;
            font-size: 12px;
            font-weight: 500;
            color: var(--muted);
            letter-spacing: 1px;
        }

        .nav-area {
            display: flex;
            align-items: center;
            gap: 18px;
        }

        .site-nav {
            display: flex;
            align-items: center;
            gap: 26px;
            flex-wrap: wrap;
        }

        .site-nav .nav-link {
            position: relative;
            color: var(--text);
            font-size: 15px;
            font-weight: 600;
            line-height: 1.4;
            padding: 8px 2px;
            transition: color .2s ease;
        }

        .site-nav .nav-link:hover {
            color: var(--primary);
        }

        .site-nav .nav-link.active {
            color: var(--primary);
        }

        .site-nav .nav-link.active::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: 0;
            height: 2px;
            border-radius: 2px;
            background: var(--primary);
        }

        .header-cta {
            padding: 10px 20px;
            font-size: 14px;
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            width: 44px;
            height: 44px;
            padding: 8px;
            background: transparent;
            border: 0;
            border-radius: 8px;
            cursor: pointer;
        }

        .nav-toggle span {
            display: block;
            height: 2px;
            border-radius: 2px;
            background: var(--text);
            transition: transform .25s ease, opacity .25s ease;
        }

        .nav-toggle.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .nav-toggle.open span:nth-child(2) {
            opacity: 0;
        }

        .nav-toggle.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* ======= 文章主区 ======= */
        .article-page {
            padding-top: 132px;
            padding-bottom: clamp(60px, 8vw, 110px);
            min-height: 70vh;
        }

        .article-title-wrap {
            max-width: 860px;
            margin: 0 auto;
        }

        .breadcrumb-nav {
            font-size: 14px;
            color: var(--muted);
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 22px;
        }

        .breadcrumb-nav a {
            color: var(--text-secondary);
        }

        .breadcrumb-nav a:hover {
            color: var(--primary);
        }

        .sub-title {
            font-size: 14px;
            color: var(--muted);
            letter-spacing: 1px;
            margin-bottom: 10px;
            text-transform: uppercase;
        }

        .article-card {
            background: var(--card);
            border: 1px solid var(--border-light);
            border-radius: 24px;
            box-shadow: var(--shadow-sm);
            padding: clamp(28px, 5vw, 64px);
            max-width: 920px;
            margin: 0 auto;
        }

        .article-header {
            margin-bottom: 36px;
        }

        .article-header h1 {
            font-size: clamp(28px, 4.5vw, 42px);
            line-height: 1.3;
            margin: 0 0 20px;
            font-weight: 700;
            letter-spacing: .2px;
            color: var(--text);
        }

        .article-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px 20px;
            color: var(--muted);
            font-size: 14px;
            padding-top: 16px;
            border-top: 1px solid var(--border-light);
        }

        .article-meta .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .article-meta .category-pill {
            background: var(--primary-light);
            color: var(--primary-dark);
            padding: 4px 12px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
        }

        .article-body {
            font-size: 16px;
            line-height: 1.9;
            color: var(--text);
        }

        .article-body p {
            margin: 0 0 1.6em;
        }

        .article-body h2 {
            font-size: 24px;
            margin: 2em 0 .7em;
            font-weight: 700;
            line-height: 1.4;
        }

        .article-body h3 {
            font-size: 19px;
            margin: 1.8em 0 .6em;
            font-weight: 600;
            line-height: 1.5;
        }

        .article-body ul,
        .article-body ol {
            margin: 0 0 1.5em 1.3em;
            padding-left: .5em;
        }

        .article-body li {
            margin-bottom: .4em;
        }

        .article-body a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 3px;
            text-decoration-color: rgba(46, 107, 158, .4);
        }

        .article-body blockquote {
            margin: 2em 0;
            padding: 20px 26px;
            background: var(--sub-bg);
            border-left: 3px solid var(--primary);
            border-radius: 8px;
            color: var(--text-secondary);
            font-style: normal;
        }

        .article-body code {
            background: var(--sub-bg);
            border-radius: 6px;
            padding: 2px 8px;
            font-family: "SFMono-Regular", Consolas, monospace;
            font-size: .9em;
        }

        .article-body pre {
            background: #1f2a37;
            color: #e7edf3;
            padding: 20px;
            border-radius: 12px;
            overflow: auto;
            margin: 1.6em 0;
        }

        .article-body pre code {
            background: transparent;
            color: inherit;
            padding: 0;
        }

        .article-body img {
            border-radius: 14px;
            margin: 1.6em auto;
        }

        .image-caption,
        .article-body figcaption {
            font-size: 13px;
            color: var(--muted);
            text-align: center;
            margin: -10px 0 1.8em;
        }

        .article-body hr {
            border: 0;
            border-top: 1px solid var(--border-light);
            margin: 2.4em auto;
        }

        .article-divider {
            height: 1px;
            background: var(--border-light);
            margin: 40px 0;
        }

        .tag-section {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
        }

        .tag-label {
            font-size: 13px;
            color: var(--text-secondary);
            font-weight: 600;
            margin-right: 4px;
        }

        .tag-chip {
            display: inline-flex;
            align-items: center;
            background: #fff;
            border: 1px solid var(--border);
            color: var(--text-secondary);
            font-size: 13px;
            padding: 5px 14px;
            border-radius: 999px;
            transition: border-color .2s ease, color .2s ease, background .2s ease;
        }

        .tag-chip:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-light);
        }

        .article-empty {
            text-align: center;
            background: #fff;
            border: 1px dashed var(--border);
            border-radius: 20px;
            padding: clamp(50px, 8vw, 90px) 24px;
            max-width: 860px;
            margin: 0 auto;
        }

        .article-empty h2 {
            font-size: 26px;
            margin-bottom: 12px;
        }

        .article-empty p {
            color: var(--text-secondary);
            font-size: 15px;
            margin-bottom: 24px;
        }

        /* ======= 相关推荐 ======= */
        .related-section {
            margin-top: clamp(56px, 8vw, 90px);
        }

        .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 20px;
            margin-bottom: 28px;
            flex-wrap: wrap;
        }

        .section-head .sub-title {
            margin-bottom: 4px;
        }

        .section-title {
            font-size: clamp(24px, 3.6vw, 34px);
            font-weight: 700;
            line-height: 1.3;
            margin: 0;
            color: var(--text);
        }

        .section-more {
            font-size: 15px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            white-space: nowrap;
        }

        .section-more .arrow {
            transition: transform .2s ease;
        }

        .section-more:hover .arrow {
            transform: translateX(4px);
        }

        .recommend-card {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: 14px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            height: 100%;
            display: flex;
            flex-direction: column;
            transition: box-shadow .25s ease, transform .25s ease;
        }

        .recommend-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }

        .recommend-cover {
            background-color: #EDF2F7;
            aspect-ratio: 3 / 2;
            overflow: hidden;
            display: block;
        }

        .recommend-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .4s ease;
        }

        .recommend-card:hover .recommend-cover img {
            transform: scale(1.04);
        }

        .recommend-body {
            padding: 20px 20px 22px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            flex: 1;
        }

        .recommend-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 13px;
            color: var(--muted);
        }

        .recommend-meta .dot {
            width: 3px;
            height: 3px;
            background: var(--border);
            border-radius: 50%;
        }

        .recommend-title {
            font-size: 17px;
            font-weight: 700;
            line-height: 1.5;
            margin: 0;
            color: var(--text);
            transition: color .2s ease;
        }

        .recommend-title a {
            color: inherit;
        }

        .recommend-card:hover .recommend-title {
            color: var(--primary);
        }

        .recommend-summary {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin: 0;
        }

        .read-more {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            margin-top: auto;
        }

        .read-more .arrow {
            transition: transform .2s ease;
        }

        .read-more:hover .arrow {
            transform: translateX(4px);
        }

        .related-empty {
            border: 1px dashed var(--border);
            background: #fff;
            border-radius: 16px;
            text-align: center;
            padding: 32px 20px;
            color: var(--muted);
        }

        .related-empty p {
            margin-bottom: 14px;
        }

        .back-links {
            margin-top: 36px;
            display: flex;
            justify-content: center;
            align-items: center;
            flex-wrap: wrap;
            gap: 14px;
        }

        /* ======= 页脚 ======= */
        .site-footer {
            background: var(--footer-bg);
            color: var(--footer-text);
            padding: clamp(48px, 6vw, 72px) 0 0;
            margin-top: auto;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 42px;
            padding-bottom: 38px;
        }

        .footer-brand .brand {
            margin-bottom: 14px;
        }

        .footer-brand .brand .brand-cn {
            color: #fff;
        }

        .footer-brand p {
            color: #8da0b3;
            font-size: 14px;
            line-height: 1.8;
            margin: 0;
            max-width: 340px;
        }

        .footer-title {
            color: #fff;
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 18px;
            position: relative;
        }

        .footer-title::after {
            content: '';
            display: block;
            width: 20px;
            height: 2px;
            border-radius: 2px;
            background: var(--accent);
            margin-top: 10px;
        }

        .footer-links {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .footer-links li {
            margin-bottom: 10px;
        }

        .footer-links a {
            color: var(--footer-text);
            font-size: 14px;
            transition: color .2s ease, padding-left .2s ease;
        }

        .footer-links a:hover {
            color: #fff;
            padding-left: 4px;
        }

        .footer-info p {
            font-size: 14px;
            margin-bottom: 10px;
            line-height: 1.8;
            color: #8da0b3;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .08);
            padding: 22px 0;
            text-align: center;
        }

        .footer-bottom p {
            margin: 0;
            font-size: 13px;
            color: #6B7A8C;
        }

        /* ======= 响应式 ======= */
        @media (max-width: 1023px) {
            .nav-toggle {
                display: flex;
            }

            .nav-area {
                position: absolute;
                top: 100%;
                left: 16px;
                right: 16px;
                display: none;
                flex-direction: column;
                align-items: stretch;
                background: rgba(255, 255, 255, .96);
                -webkit-backdrop-filter: blur(18px);
                backdrop-filter: blur(18px);
                border-radius: 16px;
                box-shadow: var(--shadow-lg);
                padding: 18px;
                gap: 16px;
                border: 1px solid var(--border-light);
            }

            .nav-area.open {
                display: flex;
            }

            .nav-area .site-nav {
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
                width: 100%;
            }

            .site-nav .nav-link {
                padding: 11px 12px;
                border-radius: 8px;
            }

            .site-nav .nav-link.active::after {
                display: none;
            }

            .site-nav .nav-link.active {
                background: var(--primary-light);
            }

            .nav-area .header-cta {
                width: 100%;
                justify-content: center;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 36px;
            }
        }

        @media (max-width: 767px) {
            .article-card {
                max-width: 100%;
                padding: 26px 22px;
                border-radius: 16px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 520px) {
            .header-inner {
                height: 64px;
                gap: 12px;
            }

            .brand-logo {
                width: 36px;
                height: 36px;
                border-radius: 10px;
                font-size: 15px;
            }

            .brand-cn {
                font-size: 18px;
            }

            .article-page {
                padding-top: 108px;
            }

            .article-card {
                padding: 22px 18px;
            }

            .article-header h1 {
                font-size: 24px;
            }

            .article-meta {
                gap: 10px;
                font-size: 13px;
            }

            .related-section .back-links .btn {
                width: 100%;
            }

            .footer-brand p {
                font-size: 13px;
            }
        }

/* roulang page: category2 */
:root {
  --primary: #2E6B9E;
  --primary-deep: #1D5079;
  --accent: #C8A46E;
  --accent-soft: #F6EFE3;
  --bg: #F6F8FA;
  --bg-card: #FFFFFF;
  --bg-soft: #EAF0F5;
  --ink: #1F2A37;
  --ink-2: #5D6A79;
  --ink-3: #8A97A5;
  --line: #DCE3EB;
  --line-2: #E5EAF0;
  --radius-card: 14px;
  --radius-block: 20px;
  --shadow-sm: 0 1px 2px rgba(31,42,55,.04), 0 8px 24px rgba(31,42,55,.06);
  --shadow-md: 0 2px 4px rgba(31,42,55,.06), 0 16px 40px rgba(31,42,55,.10);
  --transition: .25s ease;
}
* { box-sizing: border-box; }
html,
body { width: 100%; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--ink);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--primary); text-decoration: none; transition: color var(--transition), border-color var(--transition), background var(--transition); }
button, input, select, textarea { font: inherit; }
p { margin: 0 0 1em; }
h1, h2, h3, h4 { line-height: 1.3; margin: 0 0 .5em; }
ul { margin: 0; padding: 0; list-style: none; }
.grid-container { max-width: 1180px; padding-left: 24px; padding-right: 24px; }
section { display: block; }
body.nav-open { overflow: hidden; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 8px;
  border: 1px solid transparent;
  font-weight: 600;
  font-size: 15px;
  line-height: 1.5;
  cursor: pointer;
  background: transparent;
  transition: background var(--transition), border-color var(--transition), color var(--transition), transform .15s ease, box-shadow var(--transition);
}
.btn:active { transform: scale(.98); }
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 6px 18px rgba(46,107,158,.2); }
.btn-primary:hover, .btn-primary:focus { background: var(--primary-deep); color: #fff; }
.btn-line { border-color: #fff; color: #fff; background: rgba(255,255,255,.08); }
.btn-line:hover { background: rgba(255,255,255,.16); border-color: #fff; color: #fff; }
.btn-light { background: #fff; color: var(--primary); }
.btn-light:hover { background: var(--bg-soft); color: var(--primary-deep); }
.link-arrow { display: inline-flex; align-items: center; gap: 6px; font-weight: 600; color: var(--primary); padding: 6px 2px; }
.link-arrow .arrow { transition: transform .25s ease; }
.link-arrow:hover .arrow { transform: translateX(4px); }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  letter-spacing: .08em;
}
.eyebrow::before { content: ""; width: 24px; height: 1px; background: var(--accent); }
.section-head { margin-bottom: clamp(32px, 5vw, 56px); }
.section-title { font-size: clamp(26px, 3.6vw, 38px); font-weight: 700; letter-spacing: -.01em; }
.section-sub { font-size: clamp(15px, 1.2vw, 17px); color: var(--ink-2); max-width: 760px; }

.site-header {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255,255,255,.62);
  backdrop-filter: blur(18px) saturate(150%);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
  border-bottom: 1px solid rgba(255,255,255,.4);
  box-shadow: 0 4px 24px rgba(31,42,55,.04);
}
.site-header.scrolled {
  position: fixed;
  background: rgba(246,248,250,.9);
  border-bottom-color: rgba(255,255,255,.6);
  box-shadow: 0 8px 30px rgba(31,42,55,.08);
}
.header-inner { display: flex; align-items: center; min-height: 76px; gap: 28px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); }
.brand-logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  height: 36px;
  padding: 0 9px;
  border-radius: 8px;
  background: var(--primary);
  color: #fff;
  font-weight: 800;
  font-size: 17px;
  letter-spacing: .02em;
  box-shadow: 0 6px 18px rgba(46,107,158,.22);
}
.brand-cn { font-size: 19px; font-weight: 700; letter-spacing: .04em; }
.site-nav { display: flex; align-items: center; gap: 4px; margin-left: auto; }
.nav-link {
  display: inline-block;
  position: relative;
  padding: 10px 15px;
  border-radius: 8px;
  color: var(--ink);
  font-size: 15px;
  font-weight: 500;
  line-height: 1.4;
}
.nav-link:hover { color: var(--primary); background: rgba(46,107,158,.06); }
.nav-link:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; color: var(--primary); }
.nav-link.active { color: var(--primary); font-weight: 600; }
.nav-link.active::after {
  content: "";
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 2px;
  height: 2px;
  border-radius: 2px;
  background: var(--accent);
}
.header-cta { flex: 0 0 auto; }
.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  margin-left: auto;
  border: 0;
  background: rgba(255,255,255,.7);
  border-radius: 10px;
  cursor: pointer;
  color: var(--ink);
}
.nav-toggle span { display: block; width: 20px; height: 2px; background: currentColor; margin: 4px 0; border-radius: 4px; transition: transform .25s ease, opacity .2s ease; }
.nav-toggle.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

.page-hero {
  position: relative;
  padding: clamp(126px, 14vw, 190px) 0 80px;
  background:
    radial-gradient(700px 340px at 5% 18%, rgba(46,107,158,.10), transparent),
    radial-gradient(500px 300px at 88% 10%, rgba(200,164,110,.10), transparent),
    #f3f7fa;
}
.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url("/assets/images/backpic/back-1.webp") no-repeat right center / auto 92%;
  opacity: .24;
  pointer-events: none;
}
.page-hero .hero-content { position: relative; z-index: 2; }
.breadcrumbs { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; font-size: 13px; color: var(--ink-3); margin-bottom: 24px; padding: 0; }
.breadcrumbs li { display: flex; align-items: center; gap: 8px; }
.breadcrumbs a { color: var(--ink-2); }
.breadcrumbs a:hover { color: var(--primary); }
.hero-title { font-size: clamp(34px, 5vw, 50px); line-height: 1.18; max-width: 840px; margin-bottom: 22px; letter-spacing: -.01em; }
.hero-sub { font-size: clamp(16px, 1.5vw, 18px); color: var(--ink-2); line-height: 1.8; max-width: 730px; margin-bottom: 32px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 18px; align-items: center; margin-bottom: 30px; }
.hero-tags { display: flex; flex-wrap: wrap; gap: 10px; }
.pill { display: inline-flex; align-items: center; gap: 6px; padding: 6px 14px; border-radius: 999px; font-size: 13px; background: rgba(255,255,255,.75); border: 1px solid rgba(220,227,235,.9); color: var(--ink-2); }
.pill::before { content: ""; width: 5px; height: 5px; border-radius: 50%; background: var(--accent); }

.section-card { padding: clamp(64px, 8vw, 110px) 0; }
.bg-soft { background: #EEF3F7; }
.bg-white { background: #fff; }
.intro-grid { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr); gap: clamp(36px, 6vw, 76px); align-items: center; }
.intro-copy h2 { font-size: clamp(25px, 3.4vw, 36px); }
.intro-lead { color: var(--ink-2); margin: 18px 0 24px; }
.intro-mark { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 20px; }
.mark-item { display: flex; gap: 10px; font-size: 15px; line-height: 1.7; color: var(--ink-2); }
.mark-item svg { flex: 0 0 auto; width: 18px; height: 18px; margin-top: 3px; color: var(--primary); }
.intro-media { position: relative; }
.intro-media img { height: 100%; min-height: 260px; width: 100%; object-fit: cover; border-radius: var(--radius-block); box-shadow: var(--shadow-md); border: 1px solid rgba(255,255,255,.7); }
.media-note { position: absolute; left: 18px; right: 18px; bottom: 18px; display: flex; justify-content: space-between; gap: 16px; color: #fff; background: rgba(31,42,55,.34); backdrop-filter: blur(8px); padding: 12px 18px; border-radius: 13px; font-size: 13px; line-height: 1.5; border: 1px solid rgba(255,255,255,.2); }

.security-solutions { background: #fff; }
.section-head-row { display: flex; justify-content: space-between; align-items: flex-end; gap: 24px; flex-wrap: wrap; }
.grid-features { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 24px; margin-top: 48px; }
.feature-card {
  background: #fff;
  border: 1px solid var(--line-2);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.feature-card:hover { transform: translateY(-5px); border-color: rgba(46,107,158,.2); box-shadow: var(--shadow-md); }
.feat-media { aspect-ratio: 16 / 10; overflow: hidden; background: #EDF2F7; }
.feat-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.feature-card:hover .feat-media img { transform: scale(1.04); }
.feat-body { padding: 24px 24px 28px; }
.feat-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  margin-bottom: 16px;
  border-radius: 10px;
  background: var(--bg-soft);
  color: var(--primary);
}
.feat-body h3 { font-size: 19px; margin-bottom: 10px; }
.feat-body p { color: var(--ink-2); font-size: 15px; margin-bottom: 0; }
.feat-more { display: inline-flex; gap: 4px; align-items: center; margin-top: 14px; font-size: 14px; font-weight: 600; }

.rows-wrap { display: grid; gap: clamp(50px, 7vw, 90px); }
.content-row { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(36px, 6vw, 74px); align-items: center; }
.content-row.is-reverse .row-media { order: 2; }
.row-copy h3 { font-size: clamp(20px, 2.4vw, 28px); margin: 14px 0 16px; }
.row-copy .eyebrow { display: inline-flex; }
.row-copy p { color: var(--ink-2); font-size: 16px; margin-bottom: 20px; }
.check-list { display: grid; gap: 12px; margin-top: 8px; }
.check-list li { display: flex; align-items: flex-start; gap: 12px; color: var(--ink-2); font-size: 15px; }
.check-list li::before {
  content: "";
  display: block;
  flex: 0 0 auto;
  width: 20px;
  height: 20px;
  margin-top: 3px;
  border-radius: 50%;
  background: var(--bg-soft);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%232E6B9E' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6L9 17l-5-5'/%3E%3C/svg%3E");
  background-position: center;
  background-size: 12px 12px;
}
.row-media {
  position: relative;
  border-radius: var(--radius-block);
  overflow: hidden;
  border: 1px solid var(--line-2);
  background: #EDF2F7;
  box-shadow: var(--shadow-sm);
}
.row-media img { width: 100%; height: 100%; min-height: 250px; object-fit: cover; }
.media-caption {
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 14px;
  background: rgba(255,255,255,.78);
  backdrop-filter: blur(6px);
  border: 1px solid rgba(255,255,255,.6);
  color: var(--ink);
  font-size: 13px;
  padding: 10px 16px;
  border-radius: 999px;
  display: table;
  line-height: 1.4;
}
.cta-section .grid-container { position: relative; }
.cta-panel {
  position: relative;
  overflow: hidden;
  border-radius: 24px;
  padding: clamp(34px, 5vw, 64px);
  color: #fff;
  background-color: var(--primary);
  background-image:
    radial-gradient(400px 220px at 82% 12%, rgba(255,255,255,.14), transparent),
    radial-gradient(300px 220px at 16% 110%, rgba(200,164,110,.25), transparent),
    url("/assets/images/backpic/back-2.webp");
  background-position: center;
  background-size: cover;
  box-shadow: 0 22px 60px rgba(31,42,55,.16);
}
.cta-panel::before { content: ""; position: absolute; inset: 0; background: linear-gradient(105deg, rgba(46,107,158,.94) 0%, rgba(46,107,158,.70) 100%); pointer-events: none; }
.cta-inner { position: relative; z-index: 2; display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 30px; }
.cta-text { max-width: 640px; }
.cta-text h2 { font-size: clamp(24px, 3vw, 34px); margin-bottom: 12px; }
.cta-text p { color: rgba(255,255,255,.82); margin: 0; }
.cta-actions { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }

.faq-section { background: #fff; }
.faq-inner { max-width: 860px; margin: 0 auto; }
.faq-head { text-align: center; margin-bottom: 40px; }
.faq-list { display: grid; gap: 16px; }
.faq-item {
  background: #fff;
  border: 1px solid var(--line-2);
  border-radius: 16px;
  padding: 0 24px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), border-color var(--transition);
}
.faq-item:hover { border-color: rgba(46,107,158,.25); box-shadow: var(--shadow-sm); }
.faq-item summary {
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  cursor: pointer;
  min-height: 68px;
  padding: 14px 0;
  font-weight: 600;
  font-size: 16px;
  color: var(--ink);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary .faq-icon {
  position: relative;
  flex: 0 0 auto;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--bg-soft);
  border: 1px solid rgba(46,107,158,.2);
  color: var(--primary);
  transition: background .3s ease, transform .3s ease;
}
.faq-item summary .faq-icon::before,
.faq-item summary .faq-icon::after { content: ""; position: absolute; background: currentColor; border-radius: 2px; transition: transform .25s ease; }
.faq-item summary .faq-icon::before { width: 10px; height: 2px; left: 50%; top: 50%; transform: translate(-50%, -50%); }
.faq-item summary .faq-icon::after { width: 2px; height: 10px; left: 50%; top: 50%; transform: translate(-50%, -50%); }
.faq-item[open] { border-color: rgba(46,107,158,.18); }
.faq-item[open] summary .faq-icon { background: var(--primary); color: #fff; }
.faq-item[open] summary .faq-icon::after { transform: translate(-50%, -50%) rotate(90deg); opacity: 0; }
.faq-answer { padding: 0 0 24px; color: var(--ink-2); font-size: 15px; line-height: 1.85; }
.faq-answer strong { color: var(--ink); font-weight: 600; }

.site-footer {
  background: #17222E;
  color: #94A5B8;
  font-size: 14px;
  padding-top: 62px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.45fr 1fr 1fr 1.25fr;
  gap: 40px;
  padding-bottom: 42px;
}
.footer-brand .brand { margin-bottom: 16px; color: #fff; }
.footer-brand .brand .brand-logo { background: #fff; color: var(--primary); box-shadow: none; }
.footer-brand .brand .brand-cn { color: #fff; }
.footer-brand p { margin: 16px 0 0; font-size: 14px; line-height: 1.8; color: #94A5B8; max-width: 330px; }
.footer-title { color: #fff; font-size: 17px; font-weight: 600; margin-bottom: 20px; }
.footer-links { display: grid; gap: 10px; }
.footer-links a { color: #94A5B8; padding: 2px 0; transition: color .25s ease, transform .25s ease; display: inline-block; }
.footer-links a:hover { color: #fff; transform: translateX(2px); }
.footer-info p { margin: 0 0 10px; color: #94A5B8; line-height: 1.7; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.12); padding: 20px 0; display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; width: 100%; }
.footer-bottom p { margin: 0; color: #8494A6; font-size: 13px; }

@media (max-width: 1023.98px) {
  .nav-toggle { display: inline-flex; }
  .header-cta { display: none; }
  .site-nav {
    position: fixed;
    inset: 0;
    margin: 0;
    z-index: 80;
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    background: rgba(246,249,251,.98);
    backdrop-filter: blur(20px) saturate(150%);
    -webkit-backdrop-filter: blur(20px) saturate(150%);
    padding: 24px;
  }
  body.nav-open .site-nav { display: flex; }
  .site-nav .nav-link { font-size: 20px; padding: 14px 18px; width: 100%; text-align: center; border-radius: 14px; }
  .nav-link.active::after { display: none; }
  .nav-link.active { color: var(--primary); background: rgba(46,107,158,.08); }
  .grid-features { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .content-row { grid-template-columns: 1fr; }
  .content-row.is-reverse .row-media { order: initial; }
}
@media (max-width: 767.98px) {
  .grid-container { padding-left: 18px; padding-right: 18px; }
  .site-header { background: rgba(255,255,255,.74); }
  .header-inner { min-height: 64px; }
  .brand-cn { font-size: 17px; }
  .intro-grid { grid-template-columns: 1fr; }
  .intro-media img { min-height: 220px; }
  .hero-title { font-size: 32px; }
  .page-hero { padding: 110px 0 54px; }
  .cta-panel { padding: 30px 22px; }
  .faq-item { padding: 0 18px; }
}
@media (max-width: 639.98px) {
  .grid-features { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero-actions .btn { width: 100%; }
  .hero-actions .link-arrow { justify-content: center; }
  .cta-actions { flex-direction: column; align-items: stretch; }
  .cta-actions .btn { justify-content: center; }
  .cta-inner { flex-direction: column; align-items: flex-start; }
}

/* roulang page: category3 */
:root {
  --container: 1180px;
  --primary: #2E6B9E;
  --primary-dark: #1D5079;
  --primary-soft: #EAF0F5;
  --accent: #C8A46E;
  --bg: #F4F7FA;
  --bg-white: #FFFFFF;
  --bg-alt: #EAF0F5;
  --ink: #1F2A37;
  --text: #5D6A79;
  --muted: #8A97A5;
  --line: #DCE3EB;
  --shadow-sm: 0 1px 2px rgba(31,42,55,.04), 0 8px 24px rgba(31,42,55,.06);
  --shadow-md: 0 2px 4px rgba(31,42,55,.06), 0 16px 40px rgba(31,42,55,.10);
  --radius: 14px;
  --radius-lg: 20px;
  --radius-btn: 8px;
  --space-section: clamp(56px, 8vw, 110px);
  --font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scp;
}

body {
  font-family: var(--font-family);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color .22s ease;
}

a:hover {
  color: var(--primary-dark);
}

img {
  max-width: 100%;
  display: block;
}

button {
  font-family: inherit;
  border: none;
  background: none;
  cursor: pointer;
}

p {
  margin-bottom: 0;
}

h1, h2, h3, h4 {
  font-weight: 650;
  line-height: 1.3;
}

.grid-container {
  max-width: var(--container);
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

.section {
  padding-top: var(--space-section);
  padding-bottom: var(--space-section);
}

.section-head {
  margin-bottom: clamp(28px, 4vw, 46px);
  max-width: 760px;
}

.section-head.center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.section-head .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  letter-spacing: .14em;
  color: var(--primary);
  font-weight: 600;
  margin-bottom: 14px;
}

.section-head .eyebrow::before {
  content: "";
  width: 24px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}

.section-head.center .eyebrow::after {
  content: "";
  width: 24px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}

.section-head h2 {
  font-size: clamp(24px, 3.6vw, 34px);
  line-height: 1.25;
  margin-bottom: 14px;
  color: var(--ink);
}

.section-head p {
  color: var(--text);
  font-size: clamp(15px, 1.1vw, 17px);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-btn);
  font-weight: 600;
  font-size: 15px;
  line-height: 1.4;
  border: 1px solid transparent;
  transition: all .24s ease;
  text-align: center;
  cursor: pointer;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 8px 20px rgba(46, 107, 158, .18);
}

.btn-primary:hover {
  background: var(--primary-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(46, 107, 158, .24);
}

.btn-primary:active {
  transform: scale(.98);
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border-color: #b9c9da;
}

.btn-outline:hover {
  border-color: var(--primary);
  background: #f2f7fb;
  color: var(--primary-dark);
}

.btn-white {
  background: #fff;
  color: var(--primary);
  box-shadow: 0 8px 18px rgba(31,42,55,.12);
}

.btn-white:hover {
  background: #f1f5f8;
  color: var(--primary-dark);
}

.btn-ghost-light {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,.55);
}

.btn-ghost-light:hover {
  border-color: #fff;
  background: rgba(255,255,255,.1);
  color: #fff;
}

/* Card */
.card {
  background: var(--bg-white);
  border: 1px solid #E5EAF0;
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

/* Header / Nav */
.site-header {
  position: relative;
  z-index: 100;
}

.site-nav {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: 74px;
  background: rgba(255,255,255,.62);
  backdrop-filter: blur(18px) saturate(150%);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
  border-bottom: 1px solid rgba(255,255,255,.4);
  box-shadow: 0 4px 24px rgba(31,42,55,.04);
}

.site-nav.is-scrolled {
  position: fixed;
  background: rgba(246,248,250,.9);
  box-shadow: 0 8px 30px rgba(31,42,55,.08);
  border-bottom-color: rgba(220,227,235,.6);
}

.nav-inner {
  max-width: var(--container);
  height: 100%;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
  letter-spacing: .02em;
}

.brand-logo {
  font-weight: 800;
  font-size: 22px;
  line-height: 1;
  color: var(--primary);
  letter-spacing: -.02em;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-cn {
  font-size: 15px;
  font-weight: 650;
  color: var(--ink);
  border-left: 1px solid rgba(31,42,55,.16);
  padding-left: 10px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2px;
}

.nav-links .nav-link {
  display: inline-flex;
  align-items: center;
  padding: 8px 14px;
  color: var(--ink);
  font-size: 15px;
  border-radius: 8px;
  font-weight: 500;
  position: relative;
  transition: color .2s ease, background .2s ease;
}

.nav-links .nav-link:hover {
  color: var(--primary);
  background: rgba(46,107,158,.06);
}

.nav-links .nav-link.active {
  color: var(--primary);
  font-weight: 650;
  background: rgba(46,107,158,.06);
}

.nav-links .nav-link.active::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 1px;
  height: 2px;
  border-radius: 2px;
  background: var(--primary);
}

.nav-cta {
  padding: 8px 16px;
  font-size: 14px;
  flex-shrink: 0;
}

.nav-toggle {
  width: 44px;
  height: 44px;
  display: none;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  color: var(--ink);
}

.nav-toggle .bar {
  width: 22px;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
  position: relative;
  transition: all .25s ease;
}

.nav-toggle .bar::before,
.nav-toggle .bar::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;
  background: inherit;
  border-radius: 2px;
  transition: all .25s ease;
}

.nav-toggle .bar::before {
  top: -7px;
}

.nav-toggle .bar::after {
  top: 7px;
}

.nav-toggle[aria-expanded="true"] .bar {
  background: transparent;
}

.nav-toggle[aria-expanded="true"] .bar::before {
  top: 0;
  transform: rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .bar::after {
  top: 0;
  transform: rotate(-45deg);
}

.mobile-menu {
  position: fixed;
  top: 74px;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(246,248,250,.96);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  z-index: 99;
  padding: 28px 24px 42px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-12px);
  transition: all .25s ease;
}

.mobile-menu.open {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.mobile-menu a {
  color: var(--ink);
  padding: 13px 4px;
  font-size: 18px;
  font-weight: 500;
  border-bottom: 1px solid rgba(31,42,55,.08);
}

.mobile-menu a.active {
  color: var(--primary);
}

/* Category hero */
.category-hero {
  position: relative;
  padding-top: clamp(130px, 16vw, 170px);
  padding-bottom: clamp(55px, 7vw, 88px);
  background-color: #eaf1f7;
  background-image: linear-gradient(126deg, rgba(255,255,255,.3) 0%, rgba(216,230,242,.4) 100%), url('/assets/images/backpic/back-2.webp');
  background-size: cover;
  background-position: center 36%;
  border-bottom: 1px solid rgba(46,107,158,.12);
  overflow: hidden;
}

.category-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(244,247,250,.88) 0%, rgba(244,247,250,.5) 70%, rgba(244,247,250,0.3) 100%);
  pointer-events: none;
}

.category-hero .grid-container {
  position: relative;
  z-index: 2;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 22px;
}

.breadcrumb a {
  color: var(--text);
}

.breadcrumb a:hover {
  color: var(--primary);
}

.breadcrumb .sep {
  color: #b5c2d0;
  font-style: normal;
}

.hero-content {
  max-width: 680px;
}

.hero-content .eyebrow {
  display: inline-flex;
  align-items: center;
  background: rgba(255,255,255,.72);
  border: 1px solid rgba(46,107,158,.14);
  color: var(--primary);
  padding: 5px 12px;
  border-radius: 999px;
  font-size: 12px;
  letter-spacing: .08em;
  margin-bottom: 18px;
  backdrop-filter: blur(8px);
}

.hero-content h1 {
  font-size: clamp(31px, 4.6vw, 44px);
  line-height: 1.22;
  color: var(--ink);
  margin-bottom: 16px;
  font-weight: 700;
}

.hero-content .hero-desc {
  font-size: clamp(15px, 1.3vw, 17px);
  color: var(--text);
  line-height: 1.75;
  max-width: 600px;
  margin-bottom: 26px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
}

.hero-note {
  margin-top: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  color: var(--text);
  font-size: 13px;
}

.hero-note span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.hero-note i {
  color: var(--primary);
}

/* Intro / narrative section */
.intro-section {
  background: var(--bg);
}

.intro-layout {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: clamp(28px, 5vw, 64px);
  align-items: center;
}

.intro-copy h2 {
  font-size: clamp(24px, 3.4vw, 34px);
  line-height: 1.3;
  margin-bottom: 18px;
}

.intro-copy p {
  color: var(--text);
  font-size: 16px;
  margin-bottom: 16px;
}

.intro-copy ul {
  list-style: none;
  margin: 22px 0 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.intro-copy li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  background: #fff;
  border: 1px solid #E5EAF0;
  border-radius: 12px;
  padding: 14px 16px;
  font-size: 14px;
  color: var(--ink);
  box-shadow: var(--shadow-sm);
}

.intro-copy li i {
  color: var(--accent);
  margin-top: 3px;
}

.intro-image {
  position: relative;
  min-height: 300px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  background: #edf2f6;
}

.intro-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  inset: 0;
}

.intro-image::after {
  content: "";
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 18px;
  top: 18px;
  border: 1px solid rgba(255,255,255,.45);
  border-radius: 12px;
  pointer-events: none;
}

/* Topic grid */
.topic-section {
  background: #fff;
}

.topic-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

.topic-card {
  height: 100%;
  display: flex;
  flex-direction: column;
  transition: transform .23s ease, box-shadow .23s ease;
}

.topic-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}

.topic-media {
  height: 170px;
  background: #edf2f7;
  overflow: hidden;
  position: relative;
}

.topic-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}

.topic-card:hover .topic-media img {
  transform: scale(1.04);
}

.topic-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.topic-body .tag {
  align-self: flex-start;
  display: inline-flex;
  background: var(--bg-alt);
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .04em;
  padding: 4px 11px;
  border-radius: 999px;
  margin-bottom: 12px;
}

.topic-body h3 {
  font-size: 18px;
  color: var(--ink);
  line-height: 1.4;
  margin-bottom: 10px;
}

.topic-body p {
  color: var(--text);
  font-size: 14px;
  line-height: 1.7;
  margin-bottom: 14px;
}

.topic-body .more-link {
  margin-top: auto;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 5px;
  transition: gap .2s ease;
}

.topic-body .more-link:hover {
  gap: 10px;
}

/* Split feature */
.split-section {
  background: var(--bg);
}

.split-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
  list-style: none;
  margin-top: 18px;
}

.split-list li {
  position: relative;
  padding-left: 28px;
  font-size: 15px;
  color: var(--ink);
}

.split-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 7px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--primary) url("data:image/svg+xml;charset=UTF-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12l5 5L20 6'/%3E%3C/svg%3E") center/10px no-repeat;
}

.split-item {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(30px, 5vw, 68px);
  align-items: center;
}

.split-item + .split-item {
  margin-top: clamp(40px, 6vw, 80px);
}

.split-item.even .split-media {
  order: 2;
}

.split-media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  min-height: 300px;
  background: #edf2f7;
  position: relative;
}

.split-media img {
  width: 100%;
  height: 100%;
  position: absolute;
  inset: 0;
  object-fit: cover;
}

.split-copy h3 {
  font-size: clamp(21px, 2.4vw, 28px);
  margin-bottom: 16px;
  color: var(--ink);
}

.split-copy > p {
  font-size: 15px;
  color: var(--text);
  margin-bottom: 10px;
}

.split-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px;
  margin-top: 24px;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary);
  font-weight: 600;
  font-size: 14px;
}

.text-link i {
  transition: transform .2s ease;
}

.text-link:hover i {
  transform: translateX(4px);
}

/* Steps */
.steps-section {
  background: #fff;
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
  counter-reset: step;
}

.step-card {
  background: var(--bg);
  border: 1px solid #E5EAF0;
  border-radius: var(--radius);
  padding: 24px 22px;
  position: relative;
  transition: background .2s ease, box-shadow .2s ease, transform .2s ease;
}

.step-card:hover {
  background: #fff;
  transform: translateY(-5px);
  box-shadow: var(--shadow-sm);
}

.step-num {
  display: inline-grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--primary-soft);
  color: var(--primary);
  font-weight: 700;
  font-size: 18px;
  margin-bottom: 16px;
}

.step-card h3 {
  font-size: 17px;
  color: var(--ink);
  margin-bottom: 8px;
}

.step-card p {
  color: var(--text);
  font-size: 14px;
}

/* FAQ */
.faq-section {
  background: var(--bg);
}

.faq-layout {
  display: grid;
  grid-template-columns: .8fr 1.2fr;
  gap: clamp(24px, 4vw, 64px);
  align-items: start;
}

.faq-intro h2 {
  font-size: clamp(24px, 3vw, 34px);
  margin-bottom: 14px;
}

.faq-intro p {
  color: var(--text);
  margin-bottom: 24px;
}

.faq-panel {
  border-radius: var(--radius);
  background: #fff;
  border: 1px solid #E5EAF0;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.faq-item + .faq-item {
  border-top: 1px solid #E5EAF0;
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 20px;
  text-align: left;
  color: var(--ink);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  transition: color .2s ease, background .2s ease;
}

.faq-question:hover {
  color: var(--primary);
  background: #f9fbfc;
}

.faq-question .faq-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--primary-soft);
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 400;
  flex-shrink: 0;
  transition: all .25s ease;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .28s ease;
}

.faq-answer-inner {
  padding: 0 20px 20px;
  color: var(--text);
  font-size: 15px;
}

.faq-item.is-open .faq-icon {
  background: var(--accent);
  color: #fff;
  transform: rotate(45deg);
}

.faq-item.is-open .faq-answer {
  max-height: 300px;
}

/* CTA */
.cta-section {
  padding-top: var(--space-section);
  padding-bottom: var(--space-section);
}

.cta-panel {
  background: var(--primary);
  border-radius: 24px;
  padding: clamp(32px, 5vw, 62px);
  color: #fff;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-panel::before {
  content: "";
  position: absolute;
  top: -70px;
  right: -60px;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(200,164,110,.22), transparent 68%);
}

.cta-panel::after {
  content: "";
  position: absolute;
  left: 12%;
  bottom: -100px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255,255,255,.12), transparent 70%);
}

.cta-panel .cta-title {
  max-width: 580px;
  position: relative;
  z-index: 2;
}

.cta-panel h2 {
  font-size: clamp(22px, 3vw, 30px);
  margin-bottom: 14px;
}

.cta-panel p {
  font-size: 15px;
  line-height: 1.8;
  color: rgba(255,255,255,.82);
  margin-bottom: 26px;
}

.cta-panel .cta-btnbox {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
  position: relative;
  z-index: 2;
}

/* Footer */
.site-footer {
  background: #17222E;
  color: #94A5B8;
  padding-top: 52px;
}

.site-footer a {
  color: #94A5B8;
}

.site-footer a:hover {
  color: #fff;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr .8fr .8fr 1fr;
  gap: 38px 26px;
  padding-bottom: 40px;
}

.footer-brand {
  max-width: 300px;
}

.footer-brand .brand {
  margin-bottom: 14px;
}

.footer-brand .brand-cn {
  color: #fff;
  border-left-color: rgba(255,255,255,.25);
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  color: #8fa1b3;
}

.footer-title {
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 16px;
}

.footer-links {
  list-style: none;
  display: grid;
  gap: 9px;
}

.footer-links a {
  font-size: 14px;
}

.footer-info p {
  font-size: 14px;
  margin-bottom: 8px;
  color: #8fa1b3;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  padding: 18px 0 24px;
  text-align: center;
  font-size: 13px;
  color: #73879b;
}

@media (max-width: 1024px) {
  .nav-links,
  .nav-cta {
    display: none;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .topic-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .steps-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .faq-layout {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }

  .intro-layout,
  .split-item {
    grid-template-columns: 1fr;
  }

  .split-item.even .split-media {
    order: 0;
  }

  .intro-image,
  .split-media {
    min-height: 260px;
  }

  .intro-image img,
  .split-media img {
    position: static;
    height: auto;
    min-height: 260px;
  }
}

@media (max-width: 640px) {
  .site-nav {
    height: 66px;
  }

  .mobile-menu {
    top: 66px;
  }

  .category-hero {
    padding-top: 118px;
  }

  .grid-container {
    padding-left: 18px;
    padding-right: 18px;
  }

  .topic-grid {
    grid-template-columns: 1fr;
  }

  .steps-grid {
    grid-template-columns: 1fr;
  }

  .intro-copy ul {
    grid-template-columns: 1fr;
  }

  .hero-content h1 {
    font-size: 29px;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-actions .btn,
  .cta-btnbox .btn {
    width: 100%;
  }

  .intro-image,
  .split-media {
    min-height: 210px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }

  .cta-panel {
    padding: 28px 20px;
  }
}

:focus-visible {
  outline: 3px solid rgba(46,107,158,.35);
  outline-offset: 2px;
}

a:focus:not(:focus-visible) {
  outline: none;
}

/* roulang page: category4 */
:root {
            --primary: #2E6B9E;
            --primary-dark: #1D5079;
            --accent: #C8A46E;
            --bg: #F6F8FA;
            --card: #FFFFFF;
            --sub: #EAF0F5;
            --text: #1F2A37;
            --text-sub: #5D6A79;
            --text-meta: #8A97A5;
            --border: #DCE3EB;
            --radius: 14px;
            --radius-lg: 20px;
            --radius-pill: 999px;
            --shadow-sm: 0 1px 2px rgba(31, 42, 55, .04), 0 8px 24px rgba(31, 42, 55, .06);
            --shadow-hover: 0 2px 4px rgba(31, 42, 55, .06), 0 16px 40px rgba(31, 42, 55, .10);
            --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
            --section-space: clamp(56px, 8vw, 110px);
        }

        *, *::before, *::after { box-sizing: border-box; }
        body { margin: 0; font-family: var(--font); background: var(--bg); color: var(--text); line-height: 1.7; -webkit-font-smoothing: antialiased; }
        h1, h2, h3, h4, p, ul { margin: 0; padding: 0; }
        ul { list-style: none; }
        img { max-width: 100%; display: block; }
        a { text-decoration: none; color: var(--primary); }
        a:hover { color: var(--primary-dark); }
        button { font-family: inherit; }

        .grid-container { max-width: 1180px; padding-left: 24px; padding-right: 24px; }
        .section { padding: var(--section-space) 0; }

        .brand {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }
        .brand-logo {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            background: var(--primary);
            color: #fff;
            font-size: 17px;
            font-weight: 800;
            letter-spacing: .4px;
            border-radius: 13px;
            box-shadow: 0 4px 14px rgba(46, 107, 158, .22);
            transition: background .2s ease;
        }
        a.brand:hover .brand-logo { background: var(--primary-dark); }
        .brand-cn { font-size: 18px; font-weight: 700; color: var(--text); letter-spacing: .6px; }

        .site-header {
            position: absolute;
            top: 0; left: 0; right: 0;
            z-index: 300;
            background: rgba(255, 255, 255, .62);
            -webkit-backdrop-filter: blur(18px) saturate(150%);
            backdrop-filter: blur(18px) saturate(150%);
            border-bottom: 1px solid rgba(255, 255, 255, .45);
            box-shadow: 0 4px 24px rgba(31, 42, 55, .04);
            transition: background .3s ease, box-shadow .3s ease;
        }
        .site-header.scrolled {
            position: fixed;
            background: rgba(246, 248, 250, .88);
            box-shadow: 0 8px 30px rgba(31, 42, 55, .08);
        }
        .site-header .grid-container { padding-left: 24px; padding-right: 24px; }
        .header-row {
            position: relative;
            display: flex;
            align-items: center;
            min-height: 72px;
            gap: 18px;
        }
        .site-nav {
            flex: 1;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 4px;
        }
        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 12px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            border-radius: 8px;
            position: relative;
            transition: color .2s ease, background .2s ease;
        }
        .nav-link:hover { color: var(--primary); background: rgba(46, 107, 158, .06); }
        .nav-link.active { color: var(--primary); }
        .nav-link.active::after {
            content: "";
            position: absolute;
            left: 50%;
            bottom: 2px;
            width: 5px;
            height: 5px;
            border-radius: 50%;
            background: var(--primary);
            transform: translateX(-50%);
        }
        .nav-cta { flex: 0 0 auto; }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 600;
            line-height: 1;
            border: 1px solid transparent;
            cursor: pointer;
            transition: background .2s ease, color .2s ease, box-shadow .2s ease, transform .2s ease, border-color .2s ease;
        }
        .btn:hover { transform: translateY(-2px); }
        .btn:active { transform: scale(.98); }
        .btn-primary { background: var(--primary); color: #fff; }
        .btn-primary:hover { background: var(--primary-dark); box-shadow: 0 10px 24px rgba(46, 107, 158, .24); color: #fff; }
        .btn-light { background: #fff; color: var(--primary); }
        .btn-light:hover { box-shadow: 0 14px 30px rgba(0, 0, 0, .16); color: var(--primary-dark); }
        .btn-outline-light { background: transparent; border-color: rgba(255, 255, 255, .55); color: #fff; }
        .btn-outline-light:hover { background: rgba(255, 255, 255, .12); border-color: #fff; color: #fff; }

        .btn-link-arrow {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 15px;
            font-weight: 600;
            color: var(--primary);
            transition: color .2s ease;
        }
        .btn-link-arrow span { transition: transform .2s ease; }
        .btn-link-arrow:hover { color: var(--primary-dark); }
        .btn-link-arrow:hover span { transform: translateX(4px); }

        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
            margin-left: 2px;
            padding: 8px;
            background: transparent;
            border: 0;
            border-radius: 8px;
            cursor: pointer;
        }
        .nav-toggle:hover { background: rgba(46, 107, 158, .07); }
        .nav-toggle-bar { width: 22px; height: 2px; background: var(--text); border-radius: 2px; transition: transform .2s ease; }

        .page-hero {
            position: relative;
            overflow: hidden;
            padding: clamp(130px, 13vw, 180px) 0 clamp(56px, 8vw, 92px);
            background: linear-gradient(112deg, #F6F8FA 0%, #EAF0F5 55%, #E2EDF3 100%);
            border-bottom: 1px solid rgba(220, 227, 235, .8);
        }
        .page-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: radial-gradient(circle at 82% 20%, rgba(46, 107, 158, .10), transparent 46%);
        }
        .hero-decor {
            position: absolute;
            right: clamp(10px, 4vw, 58px);
            top: 50%;
            transform: translateY(-48%);
            width: min(30vw, 320px);
            border-radius: 22px;
            overflow: hidden;
            border: 6px solid rgba(255, 255, 255, .58);
            box-shadow: var(--shadow-hover);
            background: #EDF2F7;
        }
        .hero-decor img { width: 100%; height: 100%; object-fit: cover; }
        .hero-content { position: relative; z-index: 2; }
        .hero-text { max-width: 760px; }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 18px;
            font-size: 14px;
            color: var(--text-meta);
        }
        .breadcrumb a { color: var(--text-sub); transition: color .2s ease; }
        .breadcrumb a:hover { color: var(--primary); }
        .breadcrumb-sep { display: inline-block; }
        .breadcrumb .current { color: var(--text); font-weight: 600; }

        .eyebrow {
            display: inline-block;
            margin-bottom: 12px;
            padding: 6px 14px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: .6px;
            color: var(--primary);
            background: rgba(46, 107, 158, .09);
            border-radius: 999px;
        }
        .page-hero h1 {
            font-size: clamp(34px, 5vw, 48px);
            line-height: 1.2;
            font-weight: 700;
            letter-spacing: 1px;
            color: var(--text);
            margin-bottom: 16px;
        }
        .hero-lead {
            font-size: clamp(15px, 1.4vw, 18px);
            line-height: 1.7;
            color: var(--text-sub);
            max-width: 680px;
            margin-bottom: 28px;
        }
        .hero-actions { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; }

        .section-tag {
            display: inline-block;
            margin-bottom: 12px;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 1.5px;
            color: var(--accent);
        }
        .section-head {
            max-width: 820px;
            margin: 0 auto 48px;
            text-align: center;
        }
        .section-head h2 {
            font-size: clamp(24px, 3.6vw, 34px);
            line-height: 1.25;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 12px;
        }
        .section-head p {
            font-size: clamp(15px, 1.2vw, 17px);
            color: var(--text-sub);
            line-height: 1.75;
            max-width: 720px;
            margin: 0 auto;
        }

        .feature-section { background: var(--bg); }
        .feature-grid .cell { margin-bottom: 24px; }
        .feature-card {
            height: 100%;
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: box-shadow .25s ease, transform .25s ease, border-color .25s ease;
        }
        .feature-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-6px);
            border-color: rgba(46, 107, 158, .25);
        }
        .feature-card-media,
        .split-media {
            position: relative;
            overflow: hidden;
            background: #EDF2F7;
        }
        .feature-card-media { height: 180px; }
        .feature-card-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .55s ease;
        }
        .feature-card:hover .feature-card-media img { transform: scale(1.05); }
        .feature-card-body { padding: 24px 22px 26px; }
        .feature-card-body h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .feature-card-body p {
            font-size: 14px;
            line-height: 1.75;
            color: var(--text-sub);
        }

        .split-section { background: #fff; }
        .split-security { background: var(--bg); }
        .split-media {
            border-radius: 20px;
            min-height: 280px;
            width: 100%;
            box-shadow: var(--shadow-sm);
        }
        .split-media img {
            width: 100%;
            height: 100%;
            min-height: 280px;
            object-fit: cover;
        }
        .split-copy { padding: 24px 8px 0; }
        .split-copy h2 {
            font-size: clamp(23px, 3.4vw, 32px);
            line-height: 1.3;
            color: var(--text);
            margin-bottom: 16px;
            font-weight: 700;
        }
        .split-copy p {
            font-size: clamp(15px, 1.2vw, 17px);
            color: var(--text-sub);
            line-height: 1.8;
            margin-bottom: 20px;
        }
        .check-list {
            margin: 24px 0 28px;
        }
        .check-list li {
            position: relative;
            padding: 8px 0 8px 34px;
            font-size: 15px;
            color: var(--text);
            line-height: 1.65;
        }
        .check-list li::before {
            content: "\f00c";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            position: absolute;
            left: 0;
            top: 10px;
            width: 22px;
            height: 22px;
            background: rgba(46, 107, 158, .1);
            color: var(--primary);
            font-size: 12px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .process-section { background: var(--sub); }
        .process-grid .cell { margin-bottom: 24px; }
        .process-card {
            position: relative;
            height: 100%;
            padding: 30px 24px 26px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            transition: box-shadow .25s ease, transform .25s ease;
        }
        .process-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-5px);
        }
        .process-num {
            display: inline-flex;
            font-size: 34px;
            font-weight: 800;
            line-height: 1;
            color: #AFC5DA;
            margin-bottom: 16px;
        }
        .process-card h3 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text);
        }
        .process-card p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.7;
        }

        .faq-section { background: #fff; }
        .faq-list {
            margin-top: 20px;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 14px;
            padding: 0;
            margin-bottom: 14px;
            overflow: hidden;
            transition: box-shadow .2s ease, border-color .2s ease;
        }
        .faq-item:hover { border-color: rgba(46, 107, 158, .28); box-shadow: var(--shadow-sm); }
        .faq-question {
            position: relative;
            list-style: none;
            cursor: pointer;
            padding: 20px 66px 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            line-height: 1.5;
            transition: color .2s ease, background .2s ease;
        }
        .faq-question::-webkit-details-marker { display: none; }
        .faq-question:hover { background: rgba(46, 107, 158, .04); color: var(--primary); }
        .faq-question::after {
            content: "\002B";
            position: absolute;
            right: 18px;
            top: 50%;
            transform: translateY(-50%);
            width: 26px;
            height: 26px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 400;
            background: var(--sub);
            color: var(--primary);
            border-radius: 50%;
            transition: background .2s ease, color .2s ease;
        }
        .faq-item[open] .faq-question { color: var(--primary); }
        .faq-item[open] .faq-question::after {
            content: "\2212";
            background: var(--primary);
            color: #fff;
        }
        .faq-answer {
            padding: 0 24px 24px;
            font-size: 15px;
            color: var(--text-sub);
            line-height: 1.8;
        }
        .faq-answer p:last-child { margin-bottom: 0; }
        .faq-more {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 12px;
            margin-top: 26px;
            color: var(--text-sub);
            font-size: 15px;
        }

        .cta-section { background: var(--bg); }
        .cta-panel {
            position: relative;
            overflow: hidden;
            border-radius: 24px;
            padding: clamp(40px, 6vw, 66px) clamp(24px, 5vw, 70px);
            background: linear-gradient(135deg, #2E6B9E 0%, #1D5079 72%);
            box-shadow: 0 18px 50px rgba(29, 80, 121, .22);
        }
        .cta-panel::before {
            content: "";
            position: absolute;
            width: 340px;
            height: 340px;
            right: -90px;
            top: -120px;
            border-radius: 50%;
            background: rgba(255, 255, 255, .07);
        }
        .cta-panel::after {
            content: "";
            position: absolute;
            width: 200px;
            height: 200px;
            right: 180px;
            bottom: -130px;
            border-radius: 50%;
            background: rgba(200, 164, 110, .13);
        }
        .cta-panel-content { position: relative; z-index: 1; max-width: 720px; }
        .cta-panel-content h2 {
            color: #fff;
            font-size: clamp(24px, 3.6vw, 34px);
            line-height: 1.3;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .cta-panel-content p {
            color: rgba(255, 255, 255, .78);
            font-size: 16px;
            line-height: 1.8;
            margin-bottom: 26px;
            max-width: 640px;
        }
        .cta-actions { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
        .cta-meta {
            color: rgba(255, 255, 255, .58);
            font-size: 14px;
            margin-top: 28px;
            margin-bottom: 0;
        }

        .site-footer {
            background: #17222E;
            color: #94A5B8;
            padding-top: 64px;
            font-size: 14px;
        }
        .site-footer .grid-container { padding-left: 24px; padding-right: 24px; }
        .footer-grid {
            display: grid;
            grid-template-columns: 2.2fr 1fr 1fr 1.5fr;
            gap: 40px;
            padding-bottom: 45px;
            border-bottom: 1px solid rgba(255, 255, 255, .12);
        }
        .site-footer .brand { margin-bottom: 16px; }
        .site-footer .brand-logo { box-shadow: none; background: rgba(255, 255, 255, .12); color: #fff; }
        .site-footer .brand:hover .brand-logo { background: var(--primary); }
        .site-footer .brand-cn { color: #fff; }
        .footer-brand p { color: #7C8FA3; line-height: 1.8; max-width: 360px; margin-top: 4px; }
        .footer-title {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .footer-links li { margin-bottom: 10px; }
        .footer-links a {
            display: inline-flex;
            align-items: center;
            color: #94A5B8;
            transition: color .2s ease, transform .2s ease;
        }
        .footer-links a:hover {
            color: #fff;
            transform: translateX(3px);
        }
        .footer-info p { color: #7C8FA3; line-height: 1.85; }
        .footer-bottom {
            padding: 22px 0 28px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
            color: #6B7A8C;
            font-size: 14px;
        }
        .footer-bottom p { margin: 0; }

        @media screen and (min-width: 64em) {
            .hero-text { max-width: 780px; }
            .split-copy { padding-top: 0; }
            .process-card { padding-left: 28px; padding-right: 28px; }
        }

        @media screen and (max-width: 1023px) {
            .site-nav {
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                display: none;
                flex-direction: column;
                align-items: stretch;
                justify-content: flex-start;
                gap: 4px;
                padding: 16px 24px 24px;
                background: rgba(255, 255, 255, .97);
                -webkit-backdrop-filter: blur(18px);
                backdrop-filter: blur(18px);
                border-bottom: 1px solid var(--border);
                box-shadow: 0 18px 40px rgba(31, 42, 55, .08);
                z-index: 310;
            }
            .site-nav.open { display: flex; }
            .nav-link { padding: 13px 6px; border-bottom: 1px solid rgba(220, 227, 235, .6); border-radius: 0; font-size: 16px; }
            .nav-cta { margin-top: 16px; width: 100%; justify-content: center; }
            .nav-toggle { display: inline-flex; margin-left: auto; }
            .nav-cta {
                display: none;
            }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 34px; }
        }

        @media screen and (max-width: 639px) {
            .header-row { min-height: 66px; }
            .grid-container { padding-left: 16px; padding-right: 16px; }
            .page-hero { padding-top: 118px; }
            .hero-decor { display: none; }
            .hero-actions .btn { width: auto; }
            .footer-grid { grid-template-columns: 1fr; padding-bottom: 26px; }
            .footer-bottom { flex-direction: column; align-items: flex-start; }
            .section-head { margin-bottom: 36px; }
        }