/* roulang page: index */
:root{
  --primary:#1A6EBB;
  --primary-hover:#155896;
  --primary-soft:#EDF5FC;
  --primary-border:#C3DCF0;
  --navy:#0E2A47;
  --teal:#12A5A0;
  --amber:#F0A93B;
  --text:#1D2A3A;
  --text-light:#5A6C7F;
  --bg:#FFFFFF;
  --bg-soft:#F7FAFC;
  --border:#E4EAF1;
  --white:#FFFFFF;
  --radius:12px;
  --radius-sm:8px;
  --shadow-sm:0 1px 3px rgba(16,42,67,.08),0 4px 12px rgba(16,42,67,.04);
  --shadow-md:0 4px 8px rgba(16,42,67,.08),0 12px 28px rgba(16,42,67,.08);
  --shadow-lg:0 12px 32px rgba(16,42,67,.16);
  --gap:24px;
  --space:96px;
  --space-m:56px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none;transition:color .2s,border-color .2s,background .2s,box-shadow .2s,transform .2s}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid rgba(26,110,187,.35);outline-offset:2px}
img{max-width:100%;display:block}
ul,ol{list-style:none}
button{font:inherit;border:none;background:none;cursor:pointer}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section-head{max-width:720px;margin-bottom:48px}
.section-head h2{font-size:28px;line-height:1.3;font-weight:700;letter-spacing:-.01em}
.section-head p{margin-top:12px;font-size:16px;line-height:1.7;color:var(--text-light)}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}

/* Header & Nav */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  height:72px;background:var(--white);
  transition:box-shadow .3s,background .3s;
}
.site-header.scrolled{box-shadow:0 4px 16px rgba(16,42,67,.06)}
.nav-wrap{height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{font-size:20px;font-weight:800;letter-spacing:-.01em;color:var(--text);white-space:nowrap}
.brand .brand-hl{color:var(--primary)}
.main-nav{display:flex;align-items:center;gap:36px}
.main-nav a{position:relative;font-size:15px;font-weight:500;color:var(--text-light);padding:8px 2px;transition:color .2s}
.main-nav a:hover{color:var(--primary)}
.main-nav a.active{color:var(--primary);font-weight:600}
.main-nav a.active::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;background:var(--primary)}
.nav-cta{flex-shrink:0}
.nav-toggle{display:none;width:40px;height:40px;border-radius:8px;flex-direction:column;align-items:center;justify-content:center;gap:5px;border:1px solid var(--border);background:var(--white)}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text);transition:transform .3s,opacity .3s}
.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)}

/* Buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  height:44px;padding:0 24px;border-radius:8px;
  font-size:15px;font-weight:600;line-height:1;color:var(--white);
  background:var(--primary);border:1px solid var(--primary);
  transition:background .2s,transform .2s,box-shadow .2s,border-color .2s,color .2s;
  white-space:nowrap;
}
.btn:hover{background:var(--primary-hover);border-color:var(--primary-hover);transform:translateY(-2px);box-shadow:var(--shadow-sm)}
.btn:active{transform:translateY(0);box-shadow:none}
.btn-lg{height:52px;padding:0 32px;font-size:16px}
.btn-outline{background:var(--white);color:var(--primary);border:1px solid var(--primary)}
.btn-outline:hover{background:var(--primary-soft);border-color:var(--primary);color:var(--primary-hover)}
.btn-block{width:100%}

/* Hero */
.hero{position:relative;padding:160px 0 80px;overflow:hidden;background:var(--white)}
.hero::before{
  content:"";position:absolute;top:40px;right:4%;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(26,110,187,.06) 0%,rgba(26,110,187,.03) 40%,transparent 70%);
  pointer-events:none;
}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;position:relative;z-index:1}
.hero-copy h1{font-size:38px;line-height:1.25;font-weight:800;letter-spacing:-.02em;margin-bottom:16px}
.hero-sub{font-size:17px;line-height:1.8;color:var(--text-light);margin-bottom:24px;max-width:560px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:28px}
.hero-trust{display:flex;flex-wrap:wrap;gap:16px}
.hero-trust li{font-size:13px;color:var(--text-light);display:flex;align-items:center;gap:6px}
.hero-trust li::before{content:"✓";color:var(--teal);font-weight:700}
.hero-visual{position:relative}
.hero-visual img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:16px;border:1px solid var(--border);box-shadow:var(--shadow-md)}
.float-card{
  position:absolute;right:18px;bottom:-18px;background:var(--white);
  padding:12px 18px;border-radius:12px;box-shadow:var(--shadow-lg);
  font-size:13px;font-weight:600;color:var(--text);
  display:flex;align-items:center;gap:8px;border:1px solid var(--border);
}
.float-card::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--teal)}

/* Stats band */
.stats-band{background:var(--bg-soft);padding:48px 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:32px;text-align:center}
.stat strong{display:block;font-size:32px;font-weight:800;color:var(--primary);line-height:1.2}
.stat span{display:block;margin-top:6px;font-size:14px;color:var(--text-light)}

/* Features */
.features{background:var(--white)}
.feature-card{
  background:var(--white);border:1px solid var(--border);border-radius:var(--radius);
  padding:28px;box-shadow:var(--shadow-sm);transition:transform .25s,box-shadow .25s,border-color .25s;
}
.feature-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:var(--primary-border)}
.feature-icon{
  width:48px;height:48px;border-radius:12px;background:var(--primary-soft);
  display:flex;align-items:center;justify-content:center;font-size:22px;margin-bottom:18px;color:var(--primary);
}
.feature-card h3{font-size:18px;font-weight:700;margin-bottom:10px}
.feature-card p{font-size:14px;line-height:1.7;color:var(--text-light);margin-bottom:14px}
.feature-card .more{font-size:13px;font-weight:600;color:var(--primary)}

/* Scenarios */
.scenarios{background:var(--bg-soft)}
.scenario-grid{display:grid;grid-template-columns:repeat(12,1fr);grid-auto-rows:minmax(180px,auto);gap:24px}
.scenario-card{
  position:relative;border-radius:var(--radius);overflow:hidden;
  background:var(--white);border:1px solid var(--border);box-shadow:var(--shadow-sm);
  transition:transform .25s,box-shadow .25s;display:flex;flex-direction:column;
}
.scenario-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
.scenario-card .sc-cover{width:100%;height:100%;object-fit:cover;position:absolute;inset:0;z-index:0}
.scenario-card .sc-body{position:relative;z-index:1;margin-top:auto;padding:28px;background:linear-gradient(180deg,transparent,rgba(14,42,71,.82));color:var(--white)}
.pill{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  font-size:12px;font-weight:600;background:rgba(255,255,255,.92);color:var(--primary);margin-bottom:10px;
}
.scenario-card .sc-body h3{font-size:20px;font-weight:700;margin-bottom:6px}
.scenario-card .sc-body p{font-size:13px;line-height:1.6;opacity:.92;max-width:90%}
.sc-badge{
  display:inline-block;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.3);
  padding:3px 10px;border-radius:999px;font-size:12px;margin-top:12px;
}
.sc-hero{grid-column:span 7;grid-row:span 2;min-height:420px}
.sc-cell{grid-column:span 5}
.sc-cell-sm{grid-column:span 5;min-height:198px}
.sc-card-solid{background:var(--white);padding:24px;display:flex;flex-direction:column;justify-content:center;border-radius:var(--radius);border:1px solid var(--border)}
.sc-card-solid .data{font-size:30px;font-weight:800;color:var(--teal)}
.sc-card-solid p{font-size:13px;color:var(--text-light);margin-top:6px}
.sc-hero-alt{grid-column:span 7;grid-row:span 2;min-height:420px}

/* Cases */
.cases{background:var(--white)}
.case-row{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;margin-bottom:56px}
.case-row.reverse .case-media{order:2}
.case-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius);border:1px solid var(--border);box-shadow:var(--shadow-sm)}
.case-content .case-tag{font-size:12px;font-weight:600;color:var(--teal);text-transform:uppercase;letter-spacing:.06em;margin-bottom:8px}
.case-content h3{font-size:22px;font-weight:700;margin-bottom:12px}
.case-content p{font-size:15px;color:var(--text-light);line-height:1.7;margin-bottom:16px}
.case-result{font-size:30px;font-weight:800;color:var(--primary)}
.case-result span{font-size:14px;font-weight:500;color:var(--text-light);display:block;margin-top:4px}
.cases-more{text-align:center;margin-top:24px}
.cases-more a{font-size:15px;font-weight:600;color:var(--primary);border-bottom:1px solid var(--primary-border);padding-bottom:2px}
.cases-more a:hover{color:var(--primary-hover);border-color:var(--primary-hover)}

/* Pricing */
.pricing{background:var(--bg-soft)}
.pricing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch}
.price-card{
  background:var(--white);border:1px solid var(--border);border-radius:var(--radius);
  padding:36px 28px;display:flex;flex-direction:column;box-shadow:var(--shadow-sm);position:relative;
  transition:transform .25s,box-shadow .25s,border-color .25s;
}
.price-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
.price-card.featured{
  border:1px solid var(--primary);background:var(--primary-soft);transform:scale(1.03);box-shadow:var(--shadow-md);
}
.price-card.featured:hover{transform:scale(1.03) translateY(-3px)}
.plan-badge{
  position:absolute;top:-13px;left:50%;transform:translateX(-50%);
  background:var(--amber);color:var(--white);font-size:13px;font-weight:600;
  padding:4px 14px;border-radius:999px;white-space:nowrap;
}
.plan-name{font-size:17px;font-weight:700;margin-bottom:16px}
.plan-price{font-size:40px;line-height:1;font-weight:800;color:var(--text);margin-bottom:4px}
.plan-price small{font-size:14px;font-weight:500;color:var(--text-light)}
.plan-period{font-size:13px;color:var(--text-light);margin-bottom:20px}
.plan-list{margin-bottom:24px;flex:1}
.plan-list li{display:flex;gap:8px;font-size:14px;color:var(--text);padding:6px 0}
.plan-list li::before{content:"✓";color:var(--teal);font-weight:700;flex-shrink:0}
.price-note{text-align:center;font-size:14px;color:var(--text-light);margin-top:28px}

/* News */
.news{background:var(--white)}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{
  display:flex;flex-direction:column;background:var(--white);
  border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;
  box-shadow:var(--shadow-sm);transition:transform .25s,box-shadow .25s,border-color .25s;
}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:var(--primary-border)}
.news-cover{width:100%;aspect-ratio:16/9;overflow:hidden}
.news-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.news-card:hover .news-cover img{transform:scale(1.04)}
.news-body{padding:24px;display:flex;flex-direction:column;flex:1}
.news-meta{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.pill-primary{background:var(--primary-soft);color:var(--primary)}
.news-date{font-size:13px;color:var(--text-light)}
.news-body h3{font-size:17px;line-height:1.5;font-weight:700;margin-bottom:10px;color:var(--text)}
.news-body .news-excerpt{
  font-size:14px;color:var(--text-light);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:16px;
}
.read-more{font-size:13px;font-weight:600;color:var(--primary);margin-top:auto}
.empty-tip{
  grid-column:1/-1;text-align:center;padding:48px 24px;color:var(--text-light);
  background:var(--bg-soft);border:1px dashed var(--border);border-radius:var(--radius);font-size:15px;
}

/* FAQ */
.faq{background:var(--bg-soft)}
.faq-wrap{max-width:820px;margin:0 auto}
.faq-item{
  background:var(--white);border:1px solid var(--border);border-radius:var(--radius);
  margin-bottom:12px;overflow:hidden;transition:border-color .2s,box-shadow .2s;
}
.faq-item.active{border-color:var(--primary-border);box-shadow:var(--shadow-sm)}
.faq-btn{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px 18px 24px;font-size:16px;font-weight:600;color:var(--text);text-align:left;
  position:relative;
}
.faq-item.active .faq-btn{color:var(--primary)}
.faq-btn::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--primary);
  border-radius:0 2px 2px 0;opacity:0;transition:opacity .2s;
}
.faq-item.active .faq-btn::before{opacity:1}
.faq-icon{flex-shrink:0;width:22px;height:22px;position:relative}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--primary);border-radius:2px;transition:transform .25s}
.faq-icon::before{left:3px;right:3px;top:10px;height:2px}
.faq-icon::after{top:3px;bottom:3px;left:10px;width:2px}
.faq-item.active .faq-icon::after{transform:scaleY(0)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-answer-inner{padding:0 24px 20px;font-size:15px;line-height:1.8;color:var(--text-light)}

/* CTA */
.cta-banner{padding:96px 0;background:var(--white)}
.cta-box{
  background:var(--primary-soft);border-radius:24px;padding:56px 48px;text-align:center;
  border:1px solid var(--primary-border);position:relative;overflow:hidden;
}
.cta-box h3{font-size:26px;font-weight:800;margin-bottom:12px}
.cta-box p{font-size:15px;color:var(--text-light);margin-bottom:28px}
.cta-form{display:flex;gap:12px;max-width:480px;margin:0 auto}
.cta-form input{
  flex:1;height:48px;padding:0 16px;border:1px solid var(--border);border-radius:8px;
  font-size:15px;background:var(--white);color:var(--text);transition:border-color .2s,box-shadow .2s;
}
.cta-form input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 2px rgba(26,110,187,.2)}

/* Footer */
.site-footer{background:var(--navy);color:#9DB3C8;padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1.2fr 1.2fr;gap:40px;padding-bottom:48px}
.footer-brand{font-size:20px;font-weight:800;color:var(--white);margin-bottom:14px}
.footer-brand .brand-hl{color:#6ea8d8}
.footer-desc{font-size:14px;line-height:1.8;max-width:280px}
.footer-col h4{font-size:15px;font-weight:700;color:var(--white);margin-bottom:18px}
.footer-col ul li{margin-bottom:12px}
.footer-col ul li a{font-size:14px;color:#9DB3C8;transition:color .2s}
.footer-col ul li a:hover{color:var(--white)}
.footer-contact li{font-size:14px;display:flex;gap:8px;align-items:center}
.footer-contact li::before{content:"·";color:var(--primary-border);font-weight:700}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);padding:20px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#7d94a8;
}

/* Responsive */
@media (max-width:991px){
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero{padding:140px 0 64px}
  .case-row{grid-template-columns:1fr;gap:32px}
  .case-row.reverse .case-media{order:0}
  .pricing-grid{grid-template-columns:1fr;max-width:480px;margin:0 auto}
  .price-card.featured{transform:none}
  .price-card.featured:hover{transform:translateY(-3px)}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .scenario-grid{grid-template-columns:1fr 1fr}
  .sc-hero,.sc-hero-alt{grid-column:span 2;grid-row:span 1;min-height:300px}
  .sc-cell,.sc-cell-sm{grid-column:span 1}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .section{padding:56px 0}
  .nav-toggle{display:flex}
  .main-nav{
    position:fixed;top:72px;left:0;right:0;background:var(--white);
    flex-direction:column;align-items:flex-start;gap:0;padding:0 24px;
    box-shadow:0 20px 40px rgba(16,42,67,.12);
    max-height:0;overflow:hidden;visibility:hidden;opacity:0;transition:max-height .35s,opacity .3s,visibility .3s;
    border-top:1px solid var(--border);
  }
  .main-nav.open{max-height:420px;visibility:visible;opacity:1;padding:16px 24px}
  .main-nav a{display:block;width:100%;padding:14px 0;font-size:16px;border-bottom:1px solid var(--border)}
  .main-nav a.active::after{display:none}
  .main-nav a.active{background:var(--primary-soft);padding-left:12px;border-radius:8px;margin:4px 0}
  .nav-cta{display:none}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-copy h1{font-size:28px;line-height:1.3}
  .hero-sub{font-size:16px}
  .hero-actions .btn{width:100%}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:24px}
  .grid-4{grid-template-columns:1fr}
  .scenario-grid{grid-template-columns:1fr}
  .sc-hero,.sc-hero-alt,.sc-cell,.sc-cell-sm{grid-column:span 1;min-height:auto}
  .sc-hero,.sc-hero-alt{min-height:280px}
  .case-media img{aspect-ratio:16/10}
  .news-grid{grid-template-columns:1fr}
  .cta-box{padding:40px 20px}
  .cta-form{flex-direction:column}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;text-align:center}
}
@media (max-width:520px){
  .hero{padding-top:120px}
  .hero-copy h1{font-size:26px}
  .section-head h2{font-size:24px}
  .plan-price{font-size:34px}
  .stats-grid{grid-template-columns:1fr 1fr}
  .stat strong{font-size:26px}
  .cta-box h3{font-size:22px}
}

/* roulang page: article */
:root {
  --primary: #1A6EBB;
  --primary-hover: #155896;
  --primary-soft: #EDF5FC;
  --primary-border: #C3DCF0;
  --navy: #0E2A47;
  --teal: #12A5A0;
  --amber: #F0A93B;
  --text: #1D2A3A;
  --text-light: #5A6C7F;
  --bg: #FFFFFF;
  --bg-soft: #F7FAFC;
  --border: #E4EAF1;
  --white: #FFFFFF;
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --shadow-sm: 0 1px 3px rgba(16,42,67,.08), 0 4px 12px rgba(16,42,67,.04);
  --shadow-lg: 0 4px 8px rgba(16,42,67,.08), 0 12px 28px rgba(16,42,67,.10);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--primary); text-decoration: none; transition: color .2s; }
a:hover { color: var(--primary-hover); }
h1, h2, h3, h4, h5 { margin: 0; font-weight: 700; color: var(--text); }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-size: 15px;
  font-weight: 600;
  padding: 12px 26px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all .25s ease;
  text-decoration: none;
  line-height: 1.4;
  white-space: nowrap;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-hover); color: #fff; transform: translateY(-2px); box-shadow: 0 8px 20px rgba(26,110,187,.25); }
.btn-primary:active { transform: translateY(0); }
.btn-outline { background: #fff; color: var(--primary); border-color: var(--primary); }
.btn-outline:hover { background: var(--primary-soft); border-color: var(--primary-hover); transform: translateY(-2px); }
.btn:focus-visible, a:focus-visible {
  outline: 2px solid rgba(26,110,187,.4);
  outline-offset: 2px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--white);
  border-bottom: 1px solid var(--border);
  transition: box-shadow .3s;
}
.site-header.scrolled { box-shadow: 0 4px 16px rgba(16,42,67,.06); }
.nav-wrap {
  display: flex;
  align-items: center;
  height: 68px;
  gap: 24px;
}
.brand {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: .5px;
  flex-shrink: 0;
}
.brand-hl { color: var(--primary); }
.main-nav {
  display: flex;
  align-items: center;
  gap: 32px;
  margin: 0 auto;
}
.main-nav a {
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  padding: 6px 2px;
  position: relative;
  text-decoration: none;
  transition: color .2s;
}
.main-nav a:hover { color: var(--primary); }
.main-nav a.active { color: var(--primary); font-weight: 600; }
.main-nav a.active::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: 0;
  cursor: pointer;
  padding: 8px;
  margin-left: auto;
  border-radius: 6px;
}
.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform .3s, opacity .3s;
}
.nav-toggle:hover span { background: var(--primary); }
.nav-cta { flex-shrink: 0; padding: 10px 22px; }

/* Article Hero */
.article-hero {
  background: var(--bg-soft);
  padding: 52px 0 44px;
  border-bottom: 1px solid var(--border);
}
.breadcrumb {
  font-size: 13px;
  color: var(--text-light);
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}
.breadcrumb a { color: var(--text-light); text-decoration: none; transition: color .2s; }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .sep { color: #C0CCD8; }
.breadcrumb .current { color: var(--text); font-weight: 500; max-width: 480px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.article-hero h1 {
  font-size: 32px;
  line-height: 1.3;
  letter-spacing: .3px;
  margin-bottom: 18px;
  max-width: 860px;
}
.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 14px;
  color: var(--text-light);
}
.article-meta .tag {
  background: var(--primary-soft);
  color: var(--primary);
  padding: 4px 14px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
}
.article-meta .meta-divider { width: 1px; height: 14px; background: var(--border); }

/* Article Main */
.article-main {
  max-width: 780px;
  margin: 0 auto;
  padding: 48px 24px 64px;
  width: 100%;
}
.article-body { font-size: 16px; line-height: 1.8; color: var(--text); }
.article-body > *:first-child { margin-top: 0; }
.article-body p { margin: 0 0 24px; }
.article-body h2 { font-size: 24px; line-height: 1.4; margin: 36px 0 16px; padding-top: 12px; }
.article-body h3 { font-size: 20px; line-height: 1.4; margin: 28px 0 12px; }
.article-body img { width: 100%; border-radius: 8px; margin: 24px 0; }
.article-body a { color: var(--primary); text-decoration: underline; text-underline-offset: 3px; }
.article-body blockquote {
  border-left: 4px solid var(--primary);
  background: var(--bg-soft);
  padding: 16px 24px;
  margin: 24px 0;
  border-radius: 0 8px 8px 0;
  color: var(--text-light);
  font-size: 15px;
}
.article-body ul, .article-body ol { padding-left: 24px; margin: 0 0 24px; }
.article-body ul { list-style: disc; }
.article-body ol { list-style: decimal; }
.article-body li { margin-bottom: 8px; }
.article-body li::marker { color: var(--primary); }
.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 15px;
}
.article-body th {
  background: var(--primary-soft);
  font-weight: 600;
  text-align: left;
  color: var(--text);
}
.article-body td, .article-body th { border: 1px solid var(--border); padding: 12px 16px; line-height: 1.6; }
.article-body tr:nth-child(even) td { background: var(--bg-soft); }
.article-body hr { border: 0; border-top: 1px solid var(--border); margin: 32px 0; }

/* Article Bottom */
.article-bottom {
  margin-top: 48px;
  padding-top: 28px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}
.article-tags { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.article-tags .tag {
  background: var(--primary-soft);
  color: var(--primary);
  padding: 5px 14px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
}
.article-nav { display: flex; align-items: center; gap: 12px; }

/* Related Posts */
.related-posts { background: var(--bg-soft); padding: 64px 0 72px; }
.section-head { margin-bottom: 32px; }
.section-head .eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  letter-spacing: .5px;
  margin-bottom: 8px;
}
.section-head h2 { font-size: 28px; line-height: 1.3; }
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.related-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  text-decoration: none;
  color: var(--text);
  transition: all .3s ease;
  display: flex;
  flex-direction: column;
}
.related-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
  border-color: var(--primary-border);
}
.related-cover { aspect-ratio: 16 / 9; overflow: hidden; background: var(--bg-soft); }
.related-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.related-card:hover .related-cover img { transform: scale(1.05); }
.related-body { padding: 20px 22px 24px; display: flex; flex-direction: column; flex: 1; }
.related-body .tag {
  align-self: flex-start;
  background: var(--primary-soft);
  color: var(--primary);
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 12px;
}
.related-body h3 { font-size: 16px; line-height: 1.5; font-weight: 600; margin-bottom: 10px; transition: color .2s; }
.related-card:hover .related-body h3 { color: var(--primary); }
.related-body .date { font-size: 13px; color: var(--text-light); margin-top: auto; }
.related-empty {
  background: var(--white);
  border: 1px dashed var(--border);
  border-radius: var(--radius-md);
  padding: 48px;
  text-align: center;
  color: var(--text-light);
  font-size: 15px;
}

/* Not Found */
.not-found-section { padding: 96px 24px; flex: 1; }
.not-found-box {
  max-width: 560px;
  margin: 0 auto;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 56px 48px;
  text-align: center;
}
.not-found-box h1 { font-size: 30px; margin-bottom: 16px; }
.not-found-box p { color: var(--text-light); margin-bottom: 28px; line-height: 1.7; }
.not-found-box .btn { min-width: 140px; }

/* CTA Section */
.cta-section { padding: 64px 0; }
.cta-box {
  background: var(--primary-soft);
  border-radius: 24px;
  padding: 48px 24px;
  text-align: center;
}
.cta-box h2 { font-size: 28px; line-height: 1.3; margin-bottom: 12px; }
.cta-box p { color: var(--text-light); font-size: 16px; margin-bottom: 28px; }
.cta-box .btn { min-width: 180px; }

/* Footer */
.site-footer {
  background: var(--navy);
  color: #9DB3C8;
  padding: 64px 0 28px;
  margin-top: auto;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 40px;
  margin-bottom: 44px;
}
.footer-brand { font-size: 20px; font-weight: 700; color: #fff; letter-spacing: .5px; margin-bottom: 16px; }
.footer-desc { font-size: 14px; line-height: 1.8; margin: 0; color: #9DB3C8; }
.footer-col h4 { color: #fff; font-size: 15px; font-weight: 600; margin-bottom: 18px; }
.footer-col ul { list-style: none; margin: 0; padding: 0; }
.footer-col li { margin-bottom: 12px; }
.footer-col a { color: #9DB3C8; text-decoration: none; font-size: 14px; transition: color .2s; }
.footer-col a:hover { color: #fff; }
.footer-contact { font-size: 14px; line-height: 2; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.12);
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: #7E95AA;
}

/* Responsive */
@media (max-width: 991px) {
  .nav-toggle { display: flex; }
  .main-nav {
    position: fixed;
    top: 68px;
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    align-items: flex-start;
    padding: 24px 24px 32px;
    gap: 20px;
    box-shadow: 0 12px 32px rgba(16,42,67,.12);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: transform .3s ease, opacity .3s ease;
    margin: 0;
    border-bottom: 1px solid var(--border);
  }
  .main-nav.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .main-nav a { font-size: 16px; width: 100%; padding: 8px 0; border-bottom: 1px solid var(--border); }
  .main-nav a:last-child { border-bottom: 0; }
  .main-nav a.active::after { display: none; }
  .nav-cta { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .related-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .container { padding: 0 16px; }
  .article-hero { padding: 40px 0 36px; }
  .article-hero h1 { font-size: 26px; }
  .article-main { padding: 36px 16px 48px; }
  .article-body h2 { font-size: 21px; }
  .article-bottom { flex-direction: column; align-items: flex-start; }
  .cta-section { padding: 48px 0; }
  .cta-box { padding: 40px 20px; }
  .cta-box h2 { font-size: 24px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; text-align: left; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 520px) {
  .related-grid { grid-template-columns: 1fr; }
  .article-hero h1 { font-size: 23px; }
  .article-meta { gap: 10px; }
  .article-meta .meta-divider { display: none; }
  .related-body { padding: 18px; }
  .not-found-box { padding: 40px 24px; }
  .btn { padding: 11px 20px; }
}

/* roulang page: category1 */
:root {
  --primary: #1A6EBB;
  --primary-hover: #155896;
  --primary-soft: #EDF5FC;
  --primary-border: #C3DCF0;
  --navy: #0E2A47;
  --teal: #12A5A0;
  --amber: #F0A93B;
  --text: #1D2A3A;
  --text-light: #5A6C7F;
  --bg: #FFFFFF;
  --bg-soft: #F7FAFC;
  --border: #E4EAF1;
  --white: #FFFFFF;
  --radius-card: 12px;
  --radius-btn: 8px;
  --radius-pill: 999px;
  --shadow-sm: 0 1px 3px rgba(16,42,67,.08), 0 4px 12px rgba(16,42,67,.04);
  --shadow-hover: 0 4px 8px rgba(16,42,67,.08), 0 12px 28px rgba(16,42,67,.08);
  --shadow-nav: 0 4px 16px rgba(16,42,67,.06);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; transition: color .2s ease; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, p { margin: 0; }
button, input, select, textarea { font-family: inherit; }
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 22px;
  height: 44px;
  border-radius: var(--radius-btn);
  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;
  box-shadow: 0 6px 16px rgba(26, 110, 187, .22);
}
.btn-primary:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(26, 110, 187, .28);
}
.btn-primary:active { transform: translateY(0); box-shadow: 0 4px 12px rgba(26,110,187,.2); }
.btn-outline {
  background: #fff;
  color: var(--primary);
  border-color: var(--primary);
}
.btn-outline:hover {
  background: var(--primary-soft);
  border-color: var(--primary-hover);
  transform: translateY(-2px);
}
.btn-outline:active { transform: translateY(0); }
.btn:focus-visible {
  outline: 2px solid rgba(26, 110, 187, .35);
  outline-offset: 2px;
}
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 72px;
  background: #fff;
  z-index: 100;
  border-bottom: 1px solid transparent;
  transition: box-shadow .3s, border-color .3s;
}
.site-header.scrolled {
  box-shadow: var(--shadow-nav);
  border-color: var(--border);
}
.nav-wrap {
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand {
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: .5px;
  display: inline-flex;
  align-items: center;
}
.brand-hl { color: var(--primary); }
.main-nav {
  display: flex;
  align-items: center;
  gap: 32px;
}
.main-nav a:not(.btn) {
  position: relative;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-light);
  padding: 24px 0;
  transition: color .25s;
}
.main-nav a:not(.btn)::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: center;
  transition: transform .25s ease;
}
.main-nav a:not(.btn):hover { color: var(--primary); }
.main-nav a:not(.btn).active { color: var(--primary); font-weight: 600; }
.main-nav a:not(.btn).active::after { transform: scaleX(1); }
.main-nav a:not(.btn):focus-visible,
.brand:focus-visible,
.footer-col a:focus-visible,
.faq-q:focus-visible {
  outline: 2px solid rgba(26, 110, 187, .35);
  outline-offset: 2px;
}
.nav-cta { height: 40px; padding: 0 20px; }
.nav-cta-mobile { display: none; }
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  background: transparent;
  border: 0;
  cursor: pointer;
  padding: 10px;
  border-radius: 8px;
}
.nav-toggle span {
  display: block;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform .3s, opacity .3s;
}
.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); }
.page-hero {
  position: relative;
  padding: 160px 0 80px;
  background:
    linear-gradient(135deg, rgba(247, 250, 252, .94) 0%, rgba(237, 245, 252, .88) 60%, rgba(255, 255, 255, .96) 100%),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}
.page-hero::before {
  content: "";
  position: absolute;
  top: -40px;
  right: -40px;
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, rgba(26, 110, 187, .08) 0%, transparent 70%);
  pointer-events: none;
}
.page-hero-inner {
  position: relative;
  max-width: 860px;
}
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-light);
  margin-bottom: 24px;
}
.breadcrumb a { color: var(--primary); }
.breadcrumb a:hover { text-decoration: underline; }
.breadcrumb .sep { color: var(--primary-border); }
.page-hero h1 {
  font-size: 44px;
  line-height: 1.2;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 16px;
  letter-spacing: .5px;
}
.page-hero p {
  font-size: 18px;
  line-height: 1.7;
  color: var(--text-light);
  max-width: 720px;
  margin-bottom: 32px;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.hero-trust {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 28px;
}
.hero-trust span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-light);
}
.hero-trust svg {
  color: var(--teal);
  width: 14px;
  height: 14px;
  flex: 0 0 auto;
}
.section {
  padding: 96px 0;
}
.section-soft {
  background: var(--bg-soft);
}
.section-head {
  max-width: 720px;
  margin-bottom: 48px;
}
.section-head.center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}
.section-head h2 {
  font-size: 32px;
  line-height: 1.3;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 12px;
}
.section-head p {
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-light);
}
#features, #contact { scroll-margin-top: 88px; }
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.feature-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 28px;
  transition: transform .3s, box-shadow .3s, border-color .3s;
}
.feature-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
  border-color: var(--primary-border);
}
.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--primary-soft);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}
.feature-card h3 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 8px;
}
.feature-card p {
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-light);
}
.spotlight-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  padding: 24px 0;
}
.spotlight-media {
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}
.spotlight-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  aspect-ratio: 4 / 3;
}
.spotlight-content .tag {
  display: inline-block;
  padding: 4px 12px;
  background: var(--primary-soft);
  color: var(--primary);
  border-radius: var(--radius-pill);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 14px;
}
.spotlight-content h3 {
  font-size: 24px;
  line-height: 1.4;
  font-weight: 700;
  margin-bottom: 12px;
}
.spotlight-content > p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-light);
}
.feature-list {
  margin-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.feature-list li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-light);
}
.feature-list svg {
  color: var(--teal);
  width: 14px;
  height: 14px;
  flex: 0 0 auto;
}
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.step-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 28px 24px;
  transition: transform .3s, box-shadow .3s, border-color .3s;
}
.step-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
  border-color: var(--primary-border);
}
.step-num {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--primary-soft);
  color: var(--primary);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  font-size: 15px;
}
.step-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
}
.step-card p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-light);
}
.metric-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.metric-item {
  text-align: center;
  padding: 40px 24px;
  border-radius: var(--radius-card);
  background: #fff;
  border: 1px solid var(--border);
  transition: transform .3s, box-shadow .3s, border-color .3s;
}
.metric-item:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
  border-color: var(--primary-border);
}
.metric-num {
  font-size: 40px;
  line-height: 1.1;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 8px;
}
.metric-label {
  font-size: 14px;
  color: var(--text-light);
}
.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.faq-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-btn);
  overflow: hidden;
  transition: border-color .25s;
}
.faq-item.open {
  border-color: var(--primary-border);
  box-shadow: var(--shadow-sm);
}
.faq-q {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 18px 24px;
  background: none;
  border: 0;
  font-size: 16px;
  font-weight: 600;
  text-align: left;
  color: var(--text);
  cursor: pointer;
  transition: background .25s;
}
.faq-q:hover {
  background: var(--bg-soft);
}
.faq-q .icon {
  flex: 0 0 auto;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--primary-soft);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  transition: transform .3s;
}
.faq-item.open .faq-q .icon {
  transform: rotate(45deg);
}
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height .3s ease;
}
.faq-a p {
  padding: 0 24px 20px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-light);
}
.faq-item.open .faq-a {
  max-height: 500px;
}
.cta-panel {
  background: var(--primary-soft);
  border-radius: 24px;
  padding: 64px 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-panel h3 {
  font-size: 28px;
  line-height: 1.4;
  font-weight: 700;
  margin-bottom: 12px;
}
.cta-panel p {
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-light);
  margin-bottom: 28px;
}
.cta-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}
.site-footer {
  background: var(--navy);
  color: #9DB3C8;
  margin-top: 96px;
}
.site-footer .container {
  padding-top: 64px;
  padding-bottom: 24px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 48px;
}
.footer-brand {
  font-size: 20px;
  color: #fff;
  font-weight: 700;
  margin-bottom: 12px;
}
.footer-desc {
  max-width: 320px;
  font-size: 14px;
  line-height: 1.8;
  color: #9DB3C8;
}
.footer-col h4 {
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 16px;
}
.footer-col ul li {
  margin-bottom: 10px;
}
.footer-col ul a {
  color: #9DB3C8;
  font-size: 14px;
  transition: color .2s;
}
.footer-col ul a:hover {
  color: #fff;
}
.footer-contact li {
  font-size: 14px;
  line-height: 1.8;
}
.footer-bottom {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, .1);
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 13px;
  color: #7E96AC;
}
@media (max-width: 992px) {
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .steps-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .metric-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
  .spotlight-row {
    gap: 32px;
  }
}
@media (max-width: 768px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }
  .page-hero {
    padding: 120px 0 48px;
  }
  .page-hero h1 {
    font-size: 32px;
  }
  .page-hero p {
    font-size: 16px;
  }
  .section {
    padding: 56px 0;
  }
  .section-head h2 {
    font-size: 28px;
  }
  .section-head .container {
    padding: 0;
  }
  .nav-toggle {
    display: flex;
  }
  .main-nav {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: #fff;
    padding: 16px 24px 24px;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    box-shadow: var(--shadow-nav);
    border-bottom: 1px solid var(--border);
  }
  .main-nav.open {
    display: flex;
  }
  .main-nav a:not(.btn) {
    width: 100%;
    padding: 14px 0;
    font-size: 16px;
    border-bottom: 1px solid var(--bg-soft);
  }
  .main-nav a:not(.btn)::after {
    display: none;
  }
  .nav-cta {
    display: none;
  }
  .nav-cta-mobile {
    display: inline-flex;
    margin-top: 16px;
  }
  .spotlight-row {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 16px 0;
  }
  .cta-panel {
    padding: 48px 24px;
    border-radius: 16px;
  }
}
@media (max-width: 520px) {
  .brand {
    font-size: 18px;
  }
  .feature-grid,
  .steps-grid,
  .metric-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .hero-trust {
    flex-direction: column;
    gap: 10px;
  }
  .cta-actions .btn {
    width: 100%;
  }
}

/* roulang page: category2 */
:root {
  --primary: #1A6EBB;
  --primary-hover: #155896;
  --primary-soft: #EDF5FC;
  --primary-border: #C3DCF0;
  --navy: #0E2A47;
  --teal: #12A5A0;
  --amber: #F0A93B;
  --text: #1D2A3A;
  --text-light: #5A6C7F;
  --bg: #FFFFFF;
  --bg-soft: #F7FAFC;
  --border: #E4EAF1;
  --white: #FFFFFF;
  --shadow-sm: 0 1px 3px rgba(16, 42, 67, .08), 0 4px 12px rgba(16, 42, 67, .04);
  --shadow-hover: 0 4px 8px rgba(16, 42, 67, .08), 0 12px 28px rgba(16, 42, 67, .08);
  --shadow-lg: 0 12px 32px rgba(16, 42, 67, .16);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 24px;
  --radius-pill: 999px;
  --container: 1200px;
  --space-section: 96px;
  --space-section-mobile: 56px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

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

html {
  scroll-behavior: smooth;
  height: 100%;
}

body {
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--primary);
  text-decoration: none;
  transition: color .2s ease;
}

a:hover {
  color: var(--primary-hover);
  text-decoration: underline;
}

a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 2px solid rgba(26, 110, 187, .35);
  outline-offset: 2px;
}

ul, ol {
  list-style: none;
}

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

.site-content {
  flex: 1;
}

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

/* ===== Header / Nav ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, .96);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: box-shadow .25s ease, border-color .25s ease;
}

.site-header.scrolled {
  box-shadow: 0 4px 16px rgba(16, 42, 67, .06);
  border-bottom-color: var(--border);
}

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

.brand {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  display: flex;
  align-items: center;
  white-space: nowrap;
}

.brand:hover {
  text-decoration: none;
  color: var(--text);
}

.brand-hl {
  color: var(--primary);
  margin-right: 2px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 36px;
  margin-left: auto;
}

.main-nav a {
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  position: relative;
  padding: 8px 2px;
  white-space: nowrap;
}

.main-nav a:hover {
  color: var(--primary);
  text-decoration: none;
}

.main-nav a.active {
  color: var(--primary);
}

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

.nav-cta {
  margin-left: 12px;
  white-space: nowrap;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  padding: 10px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--white);
}

.nav-toggle span {
  display: block;
  height: 2px;
  width: 20px;
  margin: 0 auto;
  background: var(--text);
  border-radius: 2px;
  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);
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.2;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all .22s ease;
  white-space: nowrap;
  text-decoration: none;
}

.btn-primary {
  background: var(--primary);
  color: var(--white);
  box-shadow: 0 4px 12px rgba(26, 110, 187, .24);
}

.btn-primary:hover {
  background: var(--primary-hover);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(26, 110, 187, .3);
  text-decoration: none;
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(26, 110, 187, .2);
}

.btn-outline {
  background: var(--white);
  color: var(--primary);
  border-color: var(--primary);
}

.btn-outline:hover {
  background: var(--primary-soft);
  color: var(--primary-hover);
  transform: translateY(-2px);
  text-decoration: none;
}

.btn-outline:active {
  transform: translateY(0);
}

.btn-lg {
  padding: 16px 36px;
  font-size: 16px;
  border-radius: 10px;
}

.btn-center {
  display: inline-flex;
  margin: 0 auto;
}

/* ===== Hero ===== */
.cat-hero {
  position: relative;
  padding: 72px 0 80px;
  background: linear-gradient(160deg, var(--primary-soft) 0%, var(--bg) 60%, var(--white) 100%);
  overflow: hidden;
}

.cat-hero::before {
  content: "";
  position: absolute;
  top: -60px;
  right: -40px;
  width: 380px;
  height: 380px;
  border-radius: 50%;
  opacity: .06;
  background: radial-gradient(circle, var(--primary) 0%, transparent 70%);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 2;
}

.breadcrumb {
  font-size: 13px;
  color: var(--text-light);
  margin-bottom: 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

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

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

.breadcrumb .sep {
  margin: 0 2px;
  color: #B7C3CF;
}

.breadcrumb .current {
  color: var(--text);
  font-weight: 500;
}

.cat-hero h1 {
  font-size: 40px;
  line-height: 1.2;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.02em;
  margin-bottom: 18px;
}

.cat-hero h1 .text-primary {
  color: var(--primary);
}

.cat-hero .hero-sub {
  font-size: 17px;
  line-height: 1.8;
  color: var(--text-light);
  max-width: 460px;
  margin-bottom: 30px;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 26px;
}

.hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
}

.hero-points li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text);
  font-weight: 500;
}

.hero-points .check {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: rgba(18, 165, 160, .12);
  color: var(--teal);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 700;
}

.hero-panel {
  position: relative;
}

.hero-panel-img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 16px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-hover);
}

.hero-card {
  position: absolute;
  left: -20px;
  bottom: 24px;
  background: var(--white);
  border-radius: 14px;
  box-shadow: var(--shadow-lg);
  padding: 16px 20px;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 14px;
  max-width: 240px;
}

.hero-card .icon {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: var(--primary-soft);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}

.hero-card p {
  font-size: 13px;
  color: var(--text-light);
  line-height: 1.45;
}

.hero-card strong {
  font-size: 15px;
  color: var(--text);
  display: block;
}

/* ===== Stats Band ===== */
.stat-band {
  background: var(--bg-soft);
  padding: 48px 0;
  border-bottom: 1px solid var(--border);
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}

.stat-item {
  padding: 8px 0;
}

.stat-item .num {
  font-size: 34px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.2;
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 4px;
}

.stat-item .unit {
  font-size: 16px;
  font-weight: 600;
  color: var(--primary);
}

.stat-item .label {
  font-size: 14px;
  color: var(--text-light);
  margin-top: 6px;
}

/* ===== Section ===== */
.section {
  padding: var(--space-section) 0;
}

.section-alt {
  background: var(--bg-soft);
}

.section-head {
  max-width: 680px;
  margin: 0 auto 52px;
  text-align: center;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  padding: 6px 16px;
  background: var(--primary-soft);
  color: var(--primary);
  border-radius: var(--radius-pill);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .02em;
  margin-bottom: 16px;
}

.section-title {
  font-size: 32px;
  line-height: 1.3;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.01em;
  margin-bottom: 14px;
}

.section-sub {
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-light);
}

/* ===== Solution Cards ===== */
.solution-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.solution-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all .28s ease;
  display: flex;
  flex-direction: column;
}

.solution-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
  border-color: var(--primary-border);
}

.solution-card .card-img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-bottom: 1px solid var(--border);
}

.solution-card .card-body {
  padding: 26px 28px 28px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
}

.pill-tag {
  display: inline-flex;
  align-items: center;
  align-self: flex-start;
  padding: 5px 14px;
  font-size: 12px;
  font-weight: 600;
  color: var(--primary);
  background: var(--primary-soft);
  border-radius: var(--radius-pill);
}

.solution-card h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.4;
}

.solution-card p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-light);
  margin-bottom: 4px;
}

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

.card-link:hover {
  color: var(--primary-hover);
  text-decoration: underline;
}

.badge-line {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 4px;
}

.mini-badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  background: var(--bg-soft);
  border: 1px solid var(--border);
  color: var(--text-light);
  font-size: 12px;
  font-weight: 500;
}

/* ===== Capability Dark Band ===== */
.cap-band {
  background: var(--navy);
  padding: var(--space-section) 0;
  color: #C6D6E4;
  position: relative;
  overflow: hidden;
}

.cap-band::before {
  content: "";
  position: absolute;
  top: -80px;
  left: 10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(26, 110, 187, .25) 0%, transparent 70%);
  pointer-events: none;
}

.cap-band .section-tag {
  background: rgba(26, 110, 187, .2);
  color: #8EC3F0;
}

.cap-band .section-title {
  color: var(--white);
}

.cap-band .section-sub {
  color: #A7BCD0;
}

.cap-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
  z-index: 2;
}

.cap-item {
  background: rgba(255, 255, 255, .05);
  border: 1px solid rgba(255, 255, 255, .08);
  border-radius: 16px;
  padding: 28px 24px;
  transition: all .28s ease;
}

.cap-item:hover {
  background: rgba(255, 255, 255, .09);
  border-color: rgba(255, 255, 255, .16);
  transform: translateY(-3px);
}

.cap-icon {
  width: 50px;
  height: 50px;
  border-radius: 12px;
  background: rgba(26, 110, 187, .25);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  margin-bottom: 18px;
}

.cap-item h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 8px;
}

.cap-item .cap-text {
  font-size: 14px;
  line-height: 1.7;
  color: #A7BCD0;
}

.cap-metric {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid rgba(255, 255, 255, .08);
  font-size: 22px;
  font-weight: 700;
  color: #5EC8C3;
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.cap-metric small {
  font-size: 12px;
  color: #8099AE;
  font-weight: 400;
  margin-left: auto;
}

/* ===== Process ===== */
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  counter-reset: process;
}

.process-step {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 32px 26px;
  position: relative;
  box-shadow: var(--shadow-sm);
  transition: all .28s ease;
}

.process-step:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
  border-color: var(--primary-border);
}

.process-step .step-num {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 18px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}

.process-step h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
}

.process-step p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-light);
}

/* ===== Case Results ===== */
.case-panel {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 56px 48px;
}

.case-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}

.case-item {
  position: relative;
  padding-left: 20px;
  border-left: 2px solid var(--primary-border);
}

.case-item::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 6px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--primary);
}

.case-item .case-label {
  font-size: 13px;
  color: var(--text-light);
  font-weight: 500;
  margin-bottom: 8px;
}

.case-item .case-data {
  font-size: 30px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.2;
  margin-bottom: 8px;
}

.case-item .case-desc {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.7;
}

/* ===== FAQ ===== */
.faq-wrap {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  transition: all .25s ease;
}

.faq-item.open {
  border-color: var(--primary-border);
  box-shadow: var(--shadow-sm);
}

.faq-item.open .faq-head {
  border-left: 4px solid var(--primary);
}

.faq-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 24px;
  cursor: pointer;
  border-left: 4px solid transparent;
  transition: all .2s ease;
  min-height: 52px;
  user-select: none;
}

.faq-head:hover {
  background: var(--bg-soft);
}

.faq-head h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.5;
  margin: 0;
}

.faq-icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--primary-soft);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 400;
  transition: transform .25s ease, background .25s ease;
}

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

.faq-body {
  display: none;
  padding: 4px 24px 24px 28px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-light);
  border-top: 1px solid var(--bg-soft);
}

.faq-item.open .faq-body {
  display: block;
}

/* ===== CTA ===== */
.cta-section {
  padding: 0 0 var(--space-section);
}

.cta-panel {
  position: relative;
  background: var(--primary-soft);
  border-radius: var(--radius-lg);
  padding: 60px 48px;
  text-align: center;
  overflow: hidden;
  border: 1px solid var(--primary-border);
}

.cta-panel::before {
  content: "";
  position: absolute;
  right: -40px;
  top: -40px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: rgba(26, 110, 187, .08);
  pointer-events: none;
}

.cta-panel h2 {
  font-size: 30px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.3;
  margin-bottom: 14px;
}

.cta-panel p {
  font-size: 16px;
  color: var(--text-light);
  max-width: 520px;
  margin: 0 auto 32px;
  line-height: 1.7;
}

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

/* ===== Footer ===== */
.site-footer {
  background: var(--navy);
  color: #9DB3C8;
  padding: 56px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 44px;
}

.footer-brand {
  font-size: 18px;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 14px;
}

.footer-desc {
  font-size: 14px;
  line-height: 1.8;
  color: #9DB3C8;
  max-width: 280px;
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 16px;
}

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

.footer-col a {
  color: #9DB3C8;
  font-size: 14px;
  transition: color .2s;
}

.footer-col a:hover {
  color: var(--white);
  text-decoration: none;
}

.footer-contact li {
  font-size: 14px;
  color: #9DB3C8;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .08);
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: #6D8AA0;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .cap-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .case-list {
    gap: 24px;
  }
}

@media (max-width: 991px) {
  .main-nav {
    gap: 20px;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero-panel {
    max-width: 560px;
  }

  .stat-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }

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

@media (max-width: 767px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }

  .site-header {
    box-shadow: 0 2px 10px rgba(16, 42, 67, .05);
  }

  .site-header.scrolled {
    box-shadow: 0 4px 16px rgba(16, 42, 67, .06);
  }

  .nav-wrap {
    height: 64px;
  }

  .main-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    padding: 16px 24px 24px;
    box-shadow: 0 12px 24px rgba(16, 42, 67, .08);
    border-bottom: 1px solid var(--border);
    display: none;
    margin-left: 0;
  }

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

  .main-nav a {
    width: 100%;
    padding: 12px 0;
    font-size: 16px;
    border-bottom: 1px solid var(--bg-soft);
  }

  .main-nav a.active::after {
    display: none;
  }

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

  .nav-cta {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .cat-hero {
    padding: 48px 0 56px;
  }

  .cat-hero h1 {
    font-size: 28px;
  }

  .hero-sub {
    font-size: 15px;
  }

  .hero-card {
    position: static;
    margin-top: 20px;
    max-width: none;
  }

  .section {
    padding: var(--space-section-mobile) 0;
  }

  .section-title {
    font-size: 26px;
  }

  .section-head {
    margin-bottom: 36px;
  }

  .solution-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .cap-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .process-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .case-panel {
    padding: 32px 24px;
    border-radius: 16px;
  }

  .case-list {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .faq-head {
    padding: 16px 18px;
  }

  .faq-head h3 {
    font-size: 15px;
  }

  .faq-body {
    padding: 4px 18px 20px 22px;
  }

  .cta-panel {
    padding: 40px 24px;
    border-radius: 16px;
  }

  .cta-panel h2 {
    font-size: 24px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
    padding-bottom: 32px;
  }

  .footer-bottom {
    justify-content: center;
    text-align: center;
  }
}

@media (max-width: 520px) {
  .hero-actions .btn {
    width: 100%;
  }

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

  .stat-item .num {
    font-size: 28px;
  }
}