/* roulang page: index */
:root{
  --color-primary:#2F6DB3;
  --color-primary-strong:#1F4E82;
  --color-primary-soft:#EAF1F8;
  --color-accent:#C8433B;
  --color-bg:#F6F9FC;
  --color-surface:#FFFFFF;
  --color-text:#1B2B3C;
  --color-text-sec:#4E6074;
  --color-border:#DFE7F0;
  --color-footer:#132A3E;
  --color-footer-text:#A8BCCE;
  --radius-lg:16px;
  --radius-sm:10px;
  --radius-xs:6px;
  --shadow-card:0 6px 24px rgba(31,78,130,.08);
  --shadow-card-hover:0 12px 32px rgba(31,78,130,.14);
  --container-w:1200px;
  --header-h:72px;
  --section-space:80px;
  --font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-family);
  background:var(--color-bg);
  color:var(--color-text);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--color-primary);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--color-primary-strong)}
img{max-width:100%;display:block;height:auto}
.container{max-width:var(--container-w);margin:0 auto;padding:0 24px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  padding:12px 28px;border-radius:var(--radius-sm);
  font-size:16px;font-weight:600;line-height:1.2;
  cursor:pointer;border:1px solid transparent;
  transition:all .25s ease;text-decoration:none;
  font-family:var(--font-family);
}
.btn-primary{background:var(--color-primary);color:#fff}
.btn-primary:hover{background:var(--color-primary-strong);color:#fff;transform:translateY(-2px);box-shadow:0 8px 20px rgba(31,78,130,.25)}
.btn-secondary{background:transparent;color:var(--color-primary);border-color:var(--color-primary)}
.btn-secondary:hover{background:var(--color-primary-soft);color:var(--color-primary-strong)}
.btn:focus-visible,.nav-toggle:focus-visible,.mega-toggle:focus-visible{
  outline:2px solid var(--color-primary);outline-offset:2px;
}
.section{padding:var(--section-space) 0}
.section-head{text-align:center;max-width:720px;margin:0 auto 48px}
.section-head h2{font-size:30px;font-weight:700;color:var(--color-text);line-height:1.3;letter-spacing:-.5px}
.section-head p{margin-top:14px;color:var(--color-text-sec);font-size:16px;line-height:1.8}
.tag{
  display:inline-block;padding:4px 12px;border-radius:var(--radius-xs);
  background:var(--color-primary-soft);color:var(--color-primary);
  font-size:13px;font-weight:500;line-height:1.4;
}
.card{
  background:var(--color-surface);border:1px solid var(--color-border);
  border-radius:var(--radius-lg);box-shadow:var(--shadow-card);
  transition:all .3s ease;
}
.card:hover{box-shadow:var(--shadow-card-hover);border-color:rgba(47,109,179,.4);transform:translateY(-4px)}
/* Header */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:var(--color-surface);
  border-bottom:1px solid var(--color-border);
  box-shadow:0 1px 8px rgba(31,78,130,.04);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:var(--header-h);gap:24px;position:relative}
.brand{display:flex;align-items:baseline;gap:6px;text-decoration:none;flex-shrink:0}
.brand-name{font-size:22px;font-weight:800;color:var(--color-text);letter-spacing:-.5px}
.brand-sub{font-size:13px;font-weight:600;color:var(--color-primary);letter-spacing:1px}
.brand:hover .brand-name{color:var(--color-primary)}
.main-nav{display:flex;align-items:center;gap:4px;list-style:none}
.nav-link{
  display:block;padding:10px 16px;font-size:16px;font-weight:500;
  color:var(--color-text);border-radius:var(--radius-xs);
  position:relative;transition:all .25s ease;
}
.nav-link:hover{color:var(--color-primary);background:var(--color-primary-soft)}
.nav-link.active{color:var(--color-primary);font-weight:700}
.nav-link.active::after{
  content:'';position:absolute;left:16px;right:16px;bottom:2px;
  height:2px;border-radius:2px;background:var(--color-accent);
}
.mega-wrap{position:relative}
.mega-toggle{
  display:flex;align-items:center;gap:4px;padding:10px 16px;
  border:none;background:transparent;cursor:pointer;
  font-size:16px;font-weight:500;color:var(--color-text);
  border-radius:var(--radius-xs);font-family:var(--font-family);transition:background .2s;
}
.mega-toggle:hover{background:var(--color-primary-soft);color:var(--color-primary)}
.mega-toggle svg{width:14px;height:14px;transition:transform .25s;flex-shrink:0}
.mega-wrap:hover .mega-toggle svg,.mega-wrap:focus-within .mega-toggle svg{transform:rotate(180deg)}
.mega-panel{
  position:absolute;top:calc(100% + 8px);right:0;width:720px;
  background:var(--color-surface);border:1px solid var(--color-border);
  border-radius:var(--radius-lg);box-shadow:var(--shadow-card-hover);
  padding:28px;display:grid;grid-template-columns:1fr 1fr 1.2fr;gap:28px;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:all .28s ease;z-index:100;
}
.mega-wrap:hover .mega-panel,.mega-wrap:focus-within .mega-panel{
  opacity:1;visibility:visible;transform:translateY(0);
}
.mega-col{display:flex;flex-direction:column;gap:8px}
.mega-heading{font-size:14px;font-weight:700;color:var(--color-text-sec);margin-bottom:6px;letter-spacing:1px}
.mega-link{font-size:15px;color:var(--color-text);padding:6px 0;border-bottom:1px dashed var(--color-border);transition:all .2s}
.mega-link:hover{color:var(--color-primary);padding-left:6px;border-bottom-color:var(--color-primary)}
.mega-card{
  display:flex;flex-direction:column;gap:10px;padding:14px;
  background:var(--color-primary-soft);border-radius:var(--radius-sm);
  border:1px solid var(--color-border);transition:all .25s;
}
.mega-card:hover{box-shadow:var(--shadow-card);border-color:rgba(47,109,179,.4)}
.mega-card img{border-radius:8px;height:130px;object-fit:cover;width:100%}
.mega-card span{font-size:15px;font-weight:600;color:var(--color-text);text-align:center}
.header-cta{margin-left:4px;padding:10px 24px;font-size:15px;flex-shrink:0}
.nav-toggle{
  display:none;flex-direction:column;justify-content:center;
  width:44px;height:44px;border:1px solid var(--color-border);
  background:var(--color-surface);border-radius:var(--radius-xs);
  cursor:pointer;padding:10px;gap:5px;position:relative;z-index:120;
}
.nav-toggle span{display:block;height:2px;background:var(--color-text);border-radius:2px;transition:all .3s}
/* Hero */
.hero{
  background:linear-gradient(to right,rgba(234,241,248,.97),rgba(234,241,248,.90)),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  padding:84px 0 76px;position:relative;overflow:hidden;
}
.hero:after{
  content:'';position:absolute;right:-120px;bottom:-120px;width:360px;height:360px;
  border-radius:50%;background:rgba(47,109,179,.06);pointer-events:none;
}
.hero-inner{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center;position:relative;z-index:2}
.hero-content h1{font-size:36px;line-height:1.35;font-weight:800;color:var(--color-text);letter-spacing:-1px}
.hero-subtitle{margin-top:20px;font-size:17px;line-height:1.8;color:var(--color-text-sec);max-width:520px}
.hero-actions{display:flex;gap:16px;margin-top:32px;flex-wrap:wrap}
.hero-visual img{
  width:100%;border-radius:var(--radius-lg);
  box-shadow:var(--shadow-card-hover);border:1px solid var(--color-border);
  aspect-ratio:4/3;object-fit:cover;
}
/* Trust Bar */
.trust-bar{background:var(--color-surface);border-bottom:1px solid var(--color-border);padding:28px 0}
.trust-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.trust-item{display:flex;align-items:center;gap:16px;justify-content:center;padding:8px 0}
.trust-icon{width:52px;height:52px;flex-shrink:0;border-radius:14px;background:var(--color-primary-soft);display:flex;align-items:center;justify-content:center}
.trust-icon svg{width:26px;height:26px;stroke:var(--color-primary);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.trust-num{font-size:22px;font-weight:800;color:var(--color-text);line-height:1.2}
.trust-label{font-size:14px;color:var(--color-text-sec);margin-top:2px}
/* Value Props */
.value-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;max-width:960px;margin:0 auto}
.value-card{padding:36px 32px}
.value-icon{width:56px;height:56px;border-radius:14px;background:var(--color-primary-soft);display:flex;align-items:center;justify-content:center;margin-bottom:18px}
.value-icon svg{width:28px;height:28px;stroke:var(--color-primary);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.value-card h3{font-size:20px;font-weight:700;color:var(--color-text);margin-bottom:10px}
.value-card p{font-size:15px;color:var(--color-text-sec);line-height:1.75}
/* Feature Split */
.feature-row{display:grid;grid-template-columns:.9fr 1.1fr;gap:56px;padding:32px 0;align-items:start}
.feature-row + .feature-row{border-top:1px solid var(--color-border)}
.feature-left{position:sticky;top:calc(var(--header-h) + 24px)}
.feature-left .feature-index{font-size:14px;font-weight:700;color:var(--color-accent);letter-spacing:2px;text-transform:uppercase}
.feature-left h3{font-size:24px;font-weight:700;color:var(--color-text);margin:10px 0 12px;line-height:1.4}
.feature-left p{color:var(--color-text-sec);font-size:15px;line-height:1.8}
.feature-right{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.feature-item{
  background:var(--color-surface);border:1px solid var(--color-border);
  border-radius:var(--radius-sm);padding:24px 22px;transition:all .25s;
}
.feature-item:hover{border-color:var(--color-primary);box-shadow:var(--shadow-card)}
.feature-item .num{font-size:26px;font-weight:800;color:var(--color-primary);line-height:1;margin-bottom:10px}
.feature-item h4{font-size:17px;font-weight:600;color:var(--color-text);margin-bottom:6px}
.feature-item p{font-size:14px;color:var(--color-text-sec);line-height:1.7}
.feature-visual{display:flex;justify-content:center;padding:24px;background:var(--color-primary-soft);border-radius:var(--radius-lg);margin-bottom:16px}
.feature-visual img{max-height:140px;object-fit:contain;border-radius:10px;width:100%}
/* Scenario Cards */
.scenario-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.scenario-card{overflow:hidden}
.scenario-card img{width:100%;height:200px;object-fit:cover}
.scenario-body{padding:28px 24px}
.scenario-body h3{font-size:19px;font-weight:700;color:var(--color-text);margin-bottom:10px}
.scenario-body p{font-size:15px;color:var(--color-text-sec);line-height:1.75}
.scenario-body .scenario-step{display:inline-block;margin-top:14px;font-size:13px;font-weight:600;color:var(--color-accent)}
/* Platform Feature Dark */
.platform-section{background:var(--color-footer);color:#fff;position:relative;overflow:hidden}
.platform-section:before{
  content:'';position:absolute;top:-60px;right:-60px;width:300px;height:300px;
  border-radius:50%;background:rgba(255,255,255,.04);pointer-events:none;
}
.platform-inner{position:relative;z-index:2}
.platform-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:56px;align-items:center}
.platform-copy h2{font-size:32px;font-weight:800;line-height:1.3;margin-bottom:20px}
.platform-copy p{color:rgba(255,255,255,.85);font-size:16px;line-height:1.8;margin-bottom:16px}
.platform-stats{display:grid;grid-template-columns:1fr 1fr;gap:28px;margin-top:36px}
.platform-stat{padding:22px;background:rgba(255,255,255,.06);border-radius:var(--radius-sm);border:1px solid rgba(255,255,255,.12)}
.platform-stat .num{font-size:38px;font-weight:800;color:#fff;line-height:1.1}
.platform-stat .label{font-size:14px;color:rgba(255,255,255,.8);margin-top:6px}
.platform-visual{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.platform-visual img{width:100%;height:210px;object-fit:cover;border-radius:var(--radius-sm);border:1px solid rgba(255,255,255,.15)}
/* Pricing */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;max-width:1080px;margin:0 auto;align-items:stretch}
.price-card{padding:36px 28px;display:flex;flex-direction:column;position:relative}
.price-card.featured{border:2px solid var(--color-primary);box-shadow:0 12px 32px rgba(47,109,179,.16)}
.price-card.featured .badge{
  position:absolute;top:-12px;right:24px;padding:5px 14px;background:var(--color-accent);
  color:#fff;font-size:12px;font-weight:700;border-radius:20px;
}
.price-name{font-size:18px;font-weight:700;color:var(--color-text)}
.price-desc{font-size:14px;color:var(--color-text-sec);margin:6px 0 18px}
.price-num{font-size:34px;font-weight:800;color:var(--color-primary);line-height:1}
.price-num small{font-size:14px;font-weight:500;color:var(--color-text-sec);margin-left:4px}
.price-features{list-style:none;margin:22px 0 28px;flex-grow:1;display:flex;flex-direction:column;gap:10px}
.price-features li{display:flex;align-items:flex-start;gap:10px;font-size:15px;color:var(--color-text);line-height:1.5}
.price-features li svg{width:18px;height:18px;stroke:var(--color-primary);fill:none;stroke-width:2;flex-shrink:0;margin-top:2px;stroke-linecap:round;stroke-linejoin:round}
.price-features li::before{
  content:'';width:18px;height:18px;flex-shrink:0;margin-top:4px;
  background:var(--color-primary-soft);border-radius:50%;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%232F6DB3' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E");
  background-size:12px;background-position:center;background-repeat:no-repeat;
}
.price-note{text-align:center;font-size:14px;color:var(--color-text-sec);margin-top:28px}
/* News */
.news-list{display:flex;flex-direction:column;gap:20px}
.news-item{
  display:grid;grid-template-columns:240px 1fr;background:var(--color-surface);
  border:1px solid var(--color-border);border-radius:var(--radius-lg);
  overflow:hidden;transition:all .3s ease;
}
.news-item:hover{box-shadow:var(--shadow-card-hover);transform:translateY(-2px);border-color:rgba(47,109,179,.4)}
.news-thumb{overflow:hidden}
.news-thumb img{width:100%;height:100%;object-fit:cover;min-height:160px}
.news-info{padding:24px 28px;display:flex;flex-direction:column}
.news-title{font-size:18px;font-weight:700;line-height:1.5;margin-bottom:8px}
.news-title a{color:var(--color-text);transition:color .2s}
.news-title a:hover{color:var(--color-primary)}
.news-summary{font-size:15px;color:var(--color-text-sec);line-height:1.7;flex-grow:1}
.news-meta{display:flex;align-items:center;gap:16px;margin-top:16px;flex-wrap:wrap}
.news-meta time{font-size:13px;color:var(--color-text-sec)}
.news-meta .read-more{font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:4px}
.news-meta .read-more:hover{text-decoration:underline}
.news-empty{
  background:var(--color-primary-soft);border:2px dashed var(--color-primary);
  border-radius:var(--radius-lg);padding:48px 24px;text-align:center;
}
.news-empty img{width:44px;height:44px;margin:0 auto 12px;opacity:.5}
.news-empty p{color:var(--color-text-sec);font-size:15px}
/* FAQ */
.faq-grid{max-width:860px;margin:0 auto;display:flex;flex-direction:column;gap:14px}
.faq-item{
  background:var(--color-surface);border:1px solid var(--color-border);
  border-radius:var(--radius-sm);overflow:hidden;transition:all .25s;
}
.faq-item:hover{border-color:rgba(47,109,179,.4)}
.faq-question{
  width:100%;display:flex;align-items:center;justify-content:space-between;
  padding:20px 24px;background:none;border:none;
  font-size:17px;font-weight:600;color:var(--color-text);text-align:left;
  cursor:pointer;font-family:var(--font-family);gap:16px;transition:background .2s;
}
.faq-question:hover{background:var(--color-primary-soft)}
.faq-question svg{width:20px;height:20px;flex-shrink:0;stroke:var(--color-primary);fill:none;stroke-width:2;transition:transform .3s;stroke-linecap:round}
.faq-item.open .faq-question svg{transform:rotate(45deg)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-answer-inner{padding:0 24px 20px;color:var(--color-text-sec);font-size:15px;line-height:1.8;border-top:1px dashed var(--color-border);padding-top:14px}
/* CTA */
.cta-section{
  background:linear-gradient(to right,var(--color-primary),var(--color-primary-strong));
  position:relative;overflow:hidden;padding:72px 0;
}
.cta-section:before{
  content:'';position:absolute;top:0;left:0;right:0;bottom:0;
  background-image:radial-gradient(rgba(255,255,255,.08) 1px,transparent 1px);
  background-size:24px 24px;pointer-events:none;
}
.cta-inner{position:relative;z-index:2;text-align:center;max-width:640px;margin:0 auto}
.cta-inner h2{color:#fff;font-size:32px;font-weight:800;line-height:1.4;margin-bottom:14px}
.cta-inner p{color:rgba(255,255,255,.9);font-size:17px;line-height:1.7;margin-bottom:32px}
.cta-inner .btn{background:#fff;color:var(--color-primary);border:none;padding:14px 40px;font-size:17px}
.cta-inner .btn:hover{background:var(--color-primary-soft);color:var(--color-primary-strong);transform:translateY(-2px);box-shadow:0 10px 24px rgba(0,0,0,.18)}
/* Footer */
.site-footer{background:var(--color-footer);color:var(--color-footer-text);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:48px;padding-bottom:48px}
.footer-logo{display:flex;align-items:baseline;gap:6px;margin-bottom:18px}
.footer-logo .brand-name{color:#fff;font-size:22px;font-weight:800}
.footer-logo .brand-sub{color:var(--color-primary);font-size:13px;font-weight:600}
.site-footer .brand-sub{color:#5B9BD5}
.footer-brand p{font-size:15px;line-height:1.8;color:rgba(255,255,255,.7);max-width:300px}
.footer-col h4{color:#fff;font-size:17px;font-weight:700;margin-bottom:18px;position:relative;padding-bottom:10px}
.footer-col h4:after{content:'';position:absolute;left:0;bottom:0;width:32px;height:3px;border-radius:3px;background:var(--color-accent)}
.footer-col a{display:block;color:rgba(255,255,255,.75);font-size:15px;margin-bottom:12px;transition:all .2s}
.footer-col a:hover{color:#fff;padding-left:6px}
.footer-col p{font-size:15px;line-height:1.8;margin-bottom:10px;color:rgba(255,255,255,.7)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:22px 0;text-align:center}
.footer-bottom p{font-size:14px;color:rgba(255,255,255,.55)}
/* Responsive */
@media(max-width:1024px){
  .main-nav{gap:2px}
  .nav-link{padding:8px 12px;font-size:15px}
  .header-cta{padding:8px 18px;font-size:14px}
  .mega-panel{width:600px;right:-80px;grid-template-columns:1fr 1fr}
  .mega-col:last-child{display:none}
  .hero{padding:64px 0}
  .hero-content h1{font-size:30px}
  .trust-grid{grid-template-columns:repeat(2,1fr)}
  .feature-row{grid-template-columns:1fr;gap:32px}
  .feature-left{position:static}
  .platform-grid{grid-template-columns:1fr;gap:40px}
  .price-grid{grid-template-columns:1fr;max-width:480px}
  .scenario-grid{grid-template-columns:repeat(2,1fr)}
  .news-item{grid-template-columns:200px 1fr}
}
@media(max-width:768px){
  :root{--section-space:56px}
  .section-head h2{font-size:26px}
  .header-inner{height:auto;min-height:var(--header-h);padding:10px 16px;gap:12px;flex-wrap:wrap}
  .main-nav{
    display:none;position:absolute;top:100%;left:0;right:0;
    background:var(--color-surface);border-bottom:1px solid var(--color-border);
    flex-direction:column;padding:16px;gap:4px;
    box-shadow:0 12px 24px rgba(31,78,130,.1);
  }
  .main-nav.open{display:flex}
  .nav-link{width:100%;text-align:left;padding:12px 16px}
  .nav-link.active::after{display:none}
  .nav-link.active{background:var(--color-primary-soft);border-radius:var(--radius-xs)}
  .mega-wrap{width:100%}
  .mega-toggle{width:100%;justify-content:space-between;padding:12px 16px}
  .mega-panel{
    position:static;width:100%;opacity:1;visibility:visible;transform:none;
    grid-template-columns:1fr;gap:16px;box-shadow:none;border:none;
    padding:8px 0 4px 12px;display:none;
  }
  .mega-wrap:hover .mega-panel,.mega-wrap:focus-within .mega-panel{display:grid;opacity:1;visibility:visible}
  .mega-col:last-child{display:flex}
  .mega-card img{height:90px}
  .header-cta{display:none}
  .nav-toggle{display:flex}
  .hero-inner{grid-template-columns:1fr;gap:32px}
  .hero-content h1{font-size:28px}
  .hero-subtitle{font-size:16px}
  .hero-actions .btn{width:100%}
  .hero-visual img{max-height:280px}
  .trust-grid{grid-template-columns:1fr 1fr;gap:12px}
  .trust-item{flex-direction:column;text-align:center;gap:10px}
  .value-grid{grid-template-columns:1fr}
  .feature-right{grid-template-columns:1fr}
  .scenario-grid{grid-template-columns:1fr}
  .platform-stats{grid-template-columns:1fr 1fr}
  .platform-visual{grid-template-columns:1fr}
  .price-grid{max-width:100%}
  .news-item{grid-template-columns:1fr}
  .news-thumb img{min-height:180px;height:180px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .cta-inner h2{font-size:26px}
}
@media(max-width:520px){
  .hero-content h1{font-size:24px}
  .trust-grid{grid-template-columns:1fr 1fr}
  .trust-num{font-size:18px}
  .platform-stats{grid-template-columns:1fr}
  .scenario-card img{height:180px}
  .footer-logo{flex-wrap:wrap}
  .section-head p{font-size:15px}
}

/* roulang page: category1 */
:root {
  --color-primary: #2F6DB3;
  --color-primary-strong: #1F4E82;
  --color-primary-soft: #EAF1F8;
  --color-accent: #C8433B;
  --color-bg: #F6F9FC;
  --color-surface: #FFFFFF;
  --color-text: #1B2B3C;
  --color-text-secondary: #4E6074;
  --color-border: #DFE7F0;
  --shadow-card: 0 6px 24px rgba(31,78,130,.08);
  --shadow-card-hover: 0 12px 32px rgba(31,78,130,.14);
  --radius-card: 16px;
  --radius-btn: 10px;
  --container-w: 1200px;
  --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", sans-serif;
}

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

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

body {
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color .25s ease;
}

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

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

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

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  box-shadow: 0 2px 12px rgba(31,78,130,.05);
  height: 72px;
}

.header-inner {
  display: flex;
  align-items: center;
  height: 72px;
  gap: 32px;
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 6px;
  flex-shrink: 0;
}

.brand-name {
  font-size: 22px;
  font-weight: 800;
  color: var(--color-text);
  letter-spacing: .5px;
}

.brand-sub {
  font-size: 13px;
  color: var(--color-primary);
  font-weight: 500;
  background: var(--color-primary-soft);
  padding: 2px 8px;
  border-radius: 6px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
}

.nav-link {
  position: relative;
  padding: 10px 14px;
  font-size: 16px;
  font-weight: 500;
  color: var(--color-text);
  border-radius: 8px;
  transition: color .2s ease, background .2s ease;
}

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

.nav-link.active {
  color: var(--color-primary);
  font-weight: 700;
}

.nav-link.active::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 4px;
  height: 2px;
  background: var(--color-accent);
  border-radius: 2px;
}

.mega-wrap {
  position: relative;
}

.mega-toggle {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 10px 14px;
  font-size: 16px;
  font-weight: 500;
  color: var(--color-text);
  border-radius: 8px;
  transition: color .2s ease, background .2s ease;
}

.mega-toggle:hover {
  color: var(--color-primary);
  background: var(--color-primary-soft);
}

.mega-toggle svg {
  width: 14px;
  height: 14px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: transform .25s ease;
}

.mega-toggle.active svg {
  transform: rotate(180deg);
}

.mega-panel {
  position: absolute;
  top: calc(100% + 12px);
  left: -280px;
  width: 720px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  box-shadow: 0 16px 48px rgba(31,78,130,.16);
  padding: 24px;
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 24px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity .25s ease, transform .25s ease, visibility .25s;
}

.mega-wrap:hover .mega-panel,
.mega-toggle.active + .mega-panel,
.mega-panel.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.mega-col {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.mega-heading {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 4px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
}

.mega-link {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.5;
  transition: color .2s ease, padding-left .2s ease;
}

.mega-link:hover {
  color: var(--color-primary);
  padding-left: 4px;
}

.mega-card {
  display: block;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  transition: box-shadow .25s ease, border-color .25s ease;
}

.mega-card:hover {
  box-shadow: var(--shadow-card);
  border-color: rgba(47,109,179,.4);
}

.mega-card img {
  width: 100%;
  height: 110px;
  object-fit: cover;
}

.mega-card span {
  display: block;
  padding: 12px 14px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
  background: var(--color-surface);
}

.header-cta {
  margin-left: 8px;
  flex-shrink: 0;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-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;
  padding: 12px 28px;
  font-size: 16px;
  font-weight: 600;
  border-radius: var(--radius-btn);
  transition: background .25s ease, color .25s ease, box-shadow .25s ease, transform .2s ease, border-color .25s ease;
  line-height: 1.2;
}

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

.btn-primary:hover {
  background: var(--color-primary-strong);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(31,78,130,.2);
}

.btn-primary:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
}

.btn-outline:hover {
  background: var(--color-primary-soft);
  color: var(--color-primary-strong);
  border-color: var(--color-primary-strong);
}

.btn-outline:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* ===== Page Hero ===== */
.page-hero {
  background: var(--color-primary-soft);
  padding: 72px 0 64px;
  position: relative;
  border-bottom: 1px solid var(--color-border);
}

.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(47,109,179,.12) 1px, transparent 1px);
  background-size: 24px 24px;
  opacity: .5;
  pointer-events: none;
}

.page-hero .container {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 840px;
}

.page-hero .hero-badge {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-primary-strong);
  background: rgba(255,255,255,.7);
  border: 1px solid rgba(47,109,179,.2);
  padding: 4px 14px;
  border-radius: 20px;
  margin-bottom: 20px;
}

.page-hero h1 {
  font-size: 40px;
  line-height: 1.3;
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: 16px;
}

.page-hero p {
  font-size: 17px;
  color: var(--color-text-secondary);
  max-width: 640px;
  margin: 0 auto;
}

/* ===== Two Column Content ===== */
.twocol-section {
  padding: 72px 0 80px;
}

.twocol-grid {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 48px;
  align-items: start;
}

.anchor-rail {
  position: sticky;
  top: 100px;
}

.anchor-nav {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  box-shadow: var(--shadow-card);
}

.anchor-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-text);
  padding-bottom: 12px;
  margin-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
}

.anchor-nav a {
  padding: 10px 12px;
  font-size: 15px;
  color: var(--color-text-secondary);
  border-radius: 8px;
  transition: background .2s ease, color .2s ease, padding-left .2s ease;
}

.anchor-nav a:hover {
  background: var(--color-primary-soft);
  color: var(--color-primary);
  padding-left: 16px;
}

.content-main {
  display: flex;
  flex-direction: column;
  gap: 40px;
  min-width: 0;
}

.content-block {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 36px;
  box-shadow: var(--shadow-card);
  transition: box-shadow .3s ease, border-color .3s ease;
}

.content-block:hover {
  box-shadow: var(--shadow-card-hover);
  border-color: rgba(47,109,179,.3);
}

.content-block h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
  position: relative;
  padding-left: 18px;
}

.content-block h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 6px;
  width: 4px;
  background: var(--color-accent);
  border-radius: 2px;
}

.content-block .block-lead {
  font-size: 15px;
  color: var(--color-text-secondary);
  margin-bottom: 20px;
}

.content-block p {
  margin-bottom: 16px;
  color: var(--color-text);
}

.content-block p:last-child {
  margin-bottom: 0;
}

.block-img {
  margin-top: 24px;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.block-img img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

.block-list {
  list-style: none;
  padding: 0;
  margin: 16px 0 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.block-list li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 14px 16px;
  background: var(--color-bg);
  border-radius: 10px;
  border: 1px solid var(--color-border);
  font-size: 15px;
  line-height: 1.7;
}

.block-list li::before {
  content: "";
  flex-shrink: 0;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-primary);
  margin-top: 8px;
}

/* ===== Related Links ===== */
.related-section {
  padding: 0 0 80px;
}

.related-section .section-title {
  text-align: center;
  font-size: 30px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 40px;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.related-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: box-shadow .3s ease, transform .25s ease, border-color .3s ease;
}

.related-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-4px);
  border-color: rgba(47,109,179,.35);
}

.related-card img {
  width: 100%;
  height: 160px;
  object-fit: cover;
}

.related-card-body {
  padding: 24px;
}

.related-card h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 10px;
}

.related-card p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
}

.related-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary);
}

.related-link::after {
  content: "→";
  transition: transform .2s ease;
}

.related-link:hover::after {
  transform: translateX(4px);
}

/* ===== FAQ ===== */
.faq-section {
  padding: 0 0 80px;
}

.faq-section .container {
  max-width: 860px;
}

.faq-section .section-title {
  text-align: center;
  font-size: 30px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 36px;
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: box-shadow .3s ease, border-color .3s ease;
}

.faq-item:hover {
  border-color: rgba(47,109,179,.3);
  box-shadow: var(--shadow-card-hover);
}

.faq-item summary {
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  cursor: pointer;
  font-size: 17px;
  font-weight: 600;
  color: var(--color-text);
  transition: color .2s ease;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  font-size: 20px;
  font-weight: 400;
  transition: transform .3s ease, background .3s ease;
}

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

.faq-item summary:hover {
  color: var(--color-primary);
}

.faq-item .faq-answer {
  padding: 0 24px 20px;
  color: var(--color-text-secondary);
  font-size: 15px;
  line-height: 1.75;
}

/* ===== CTA ===== */
.cta-section {
  padding: 0 0 80px;
}

.cta-box {
  background: var(--color-primary-strong);
  border-radius: 20px;
  padding: 56px 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-box::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255,255,255,.12) 1px, transparent 1px);
  background-size: 20px 20px;
  opacity: .4;
  pointer-events: none;
}

.cta-box h2 {
  position: relative;
  z-index: 2;
  color: #fff;
  font-size: 30px;
  font-weight: 700;
  margin-bottom: 12px;
}

.cta-box p {
  position: relative;
  z-index: 2;
  color: rgba(255,255,255,.85);
  font-size: 16px;
  margin-bottom: 28px;
}

.cta-box .btn {
  position: relative;
  z-index: 2;
  background: #fff;
  color: var(--color-primary-strong);
}

.cta-box .btn:hover {
  background: var(--color-primary-soft);
  color: var(--color-primary-strong);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,.18);
}

/* ===== Footer ===== */
.site-footer {
  background: #132A3E;
  color: rgba(255,255,255,.78);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding: 56px 24px 40px;
}

.footer-brand .footer-logo {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin-bottom: 16px;
}

.footer-brand .brand-name {
  color: #fff;
  font-size: 22px;
  font-weight: 800;
}

.footer-brand .brand-sub {
  color: #B8D0E8;
  background: rgba(255,255,255,.1);
  font-size: 13px;
  padding: 2px 10px;
  border-radius: 6px;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255,255,255,.65);
}

.footer-col h4 {
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 18px;
}

.footer-col a {
  display: block;
  color: rgba(255,255,255,.65);
  font-size: 14px;
  line-height: 2.2;
  transition: color .2s ease, padding-left .2s ease;
}

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

.footer-col p {
  font-size: 14px;
  color: rgba(255,255,255,.65);
  line-height: 2.2;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.1);
  padding: 20px 0;
}

.footer-bottom .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

.footer-bottom p {
  font-size: 13px;
  color: rgba(255,255,255,.5);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .mega-panel {
    left: -180px;
    width: 620px;
  }

  .twocol-grid {
    grid-template-columns: 220px 1fr;
    gap: 32px;
  }

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

@media (max-width: 768px) {
  .site-header {
    height: auto;
    min-height: 64px;
  }

  .header-inner {
    height: 64px;
    flex-wrap: wrap;
    position: relative;
  }

  .main-nav {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    box-shadow: 0 12px 32px rgba(31,78,130,.12);
    padding: 16px 24px 24px;
    gap: 6px;
  }

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

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

  .nav-link.active::after {
    left: 8px;
    right: auto;
    width: 28px;
    bottom: 6px;
  }

  .mega-wrap {
    width: 100%;
  }

  .mega-toggle {
    width: 100%;
    justify-content: space-between;
    padding: 12px 8px;
  }

  .mega-panel {
    position: static;
    width: 100%;
    grid-template-columns: 1fr;
    gap: 16px;
    opacity: 1;
    visibility: hidden;
    transform: none;
    display: none;
    box-shadow: none;
    border: none;
    padding: 8px 0 8px 8px;
    background: transparent;
  }

  .mega-panel.show {
    display: grid;
    visibility: visible;
    opacity: 1;
  }

  .mega-col {
    gap: 6px;
  }

  .mega-card img {
    height: 80px;
  }

  .header-cta {
    display: none;
  }

  .nav-toggle {
    display: flex;
    margin-left: auto;
  }

  .page-hero {
    padding: 48px 0 40px;
  }

  .page-hero h1 {
    font-size: 30px;
  }

  .page-hero p {
    font-size: 15px;
  }

  .twocol-section {
    padding: 48px 0;
  }

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

  .anchor-rail {
    position: static;
  }

  .anchor-nav {
    flex-direction: row;
    flex-wrap: wrap;
    padding: 16px;
    gap: 8px;
  }

  .anchor-title {
    width: 100%;
    padding-bottom: 8px;
    margin-bottom: 0;
    border-bottom: none;
  }

  .anchor-nav a {
    padding: 8px 12px;
    font-size: 14px;
  }

  .content-block {
    padding: 24px;
  }

  .content-block h2 {
    font-size: 20px;
  }

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

  .related-section .section-title {
    font-size: 24px;
  }

  .faq-section .section-title {
    font-size: 24px;
  }

  .faq-item summary {
    font-size: 15px;
    padding: 16px 18px;
  }

  .faq-item .faq-answer {
    padding: 0 18px 16px;
    font-size: 14px;
  }

  .cta-section {
    padding: 0 0 60px;
  }

  .cta-box {
    padding: 40px 24px;
  }

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

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 40px 24px 32px;
  }

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

@media (max-width: 520px) {
  .brand-name {
    font-size: 20px;
  }

  .brand-sub {
    font-size: 12px;
  }

  .page-hero h1 {
    font-size: 26px;
  }

  .btn {
    padding: 10px 20px;
    font-size: 15px;
  }

  .content-block {
    padding: 20px;
  }

  .block-list li {
    font-size: 14px;
    padding: 12px;
  }
}

/* roulang page: article */
:root{
  --color-primary:#2F6DB3;
  --color-primary-strong:#1F4E82;
  --color-primary-soft:#EAF1F8;
  --color-accent:#C8433B;
  --color-bg:#F6F9FC;
  --color-surface:#FFFFFF;
  --color-text:#1B2B3C;
  --color-text-secondary:#4E6074;
  --color-border:#DFE7F0;
  --color-dark:#132A3E;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-small:8px;
  --shadow-card:0 6px 24px rgba(31,78,130,.08);
  --shadow-card-hover:0 12px 32px rgba(31,78,130,.14);
  --font-sans:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",sans-serif;
  --container:1200px;
  --space-section:80px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  color:var(--color-text);
  background:var(--color-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--color-primary);text-decoration:none;transition:color .25s ease,background .25s ease,border-color .25s ease,box-shadow .25s ease,transform .25s ease}
a:hover{color:var(--color-primary-strong)}
ul,ol{list-style-position:inside}
.container{max-width:var(--container);margin:0 auto;padding:0 24px}
h1,h2,h3,h4{line-height:1.3;font-weight:700}
p{margin-bottom:1em}
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  padding:12px 28px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;
  cursor:pointer;border:1px solid transparent;
  transition:background .25s ease,transform .25s ease,box-shadow .25s ease,color .25s ease,border-color .25s ease;
}
.btn:focus-visible{outline:2px solid var(--color-primary);outline-offset:3px}
.btn-primary{background:var(--color-primary);color:#fff}
.btn-primary:hover{background:var(--color-primary-strong);transform:translateY(-2px);box-shadow:var(--shadow-card-hover);color:#fff}
.btn-outline{background:#fff;border-color:var(--color-primary);color:var(--color-primary)}
.btn-outline:hover{background:var(--color-primary-soft);transform:translateY(-2px);color:var(--color-primary-strong);border-color:var(--color-primary-strong)}
.site-header{
  position:sticky;top:0;z-index:100;
  background:var(--color-surface);
  border-bottom:1px solid var(--color-border);
  box-shadow:0 2px 12px rgba(31,78,130,.04);
}
.header-inner{display:flex;align-items:center;gap:32px;height:72px}
.brand{display:flex;align-items:baseline;gap:6px;flex-shrink:0}
.brand-name{font-size:22px;font-weight:800;color:var(--color-primary-strong);letter-spacing:.5px}
.brand-sub{font-size:13px;font-weight:600;color:var(--color-text-secondary);letter-spacing:1px}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-link{
  position:relative;padding:8px 16px;font-size:16px;font-weight:500;
  color:var(--color-text);border-radius:8px;
}
.nav-link::after{
  content:"";position:absolute;left:16px;right:16px;bottom:2px;height:2px;
  background:var(--color-accent);border-radius:2px;transform:scaleX(0);
  transition:transform .25s ease;
}
.nav-link:hover{color:var(--color-primary);background:var(--color-primary-soft)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--color-primary);font-weight:700}
.nav-link.active::after{transform:scaleX(1)}
.mega-wrap{position:relative}
.mega-toggle{
  display:inline-flex;align-items:center;gap:4px;
  padding:8px 16px;font-size:16px;font-weight:500;
  color:var(--color-text);background:none;border:none;cursor:pointer;
  font-family:var(--font-sans);border-radius:8px;
  transition:background .25s ease,color .25s ease;
}
.mega-toggle:hover{color:var(--color-primary);background:var(--color-primary-soft)}
.mega-toggle svg{width:14px;height:14px;fill:none;stroke:currentColor;stroke-width:3;stroke-linecap:round;stroke-linejoin:round}
.mega-panel{
  position:absolute;top:calc(100% + 12px);right:0;width:720px;
  background:var(--color-surface);border-radius:16px;
  box-shadow:0 16px 48px rgba(31,78,130,.16);
  border:1px solid var(--color-border);
  padding:28px;display:grid;grid-template-columns:1fr 1fr 0.9fr;gap:28px;
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .25s ease,transform .25s ease,visibility .25s ease;
}
.mega-wrap:hover .mega-panel,
.mega-wrap:focus-within .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
.mega-col{display:flex;flex-direction:column;gap:10px}
.mega-heading{font-size:13px;font-weight:700;color:var(--color-text-secondary);letter-spacing:.5px;margin-bottom:4px}
.mega-link{font-size:14px;color:var(--color-text);padding:6px 8px;border-radius:6px}
.mega-link:hover{color:var(--color-primary);background:var(--color-primary-soft)}
.mega-card{
  display:block;border-radius:12px;overflow:hidden;
  background:var(--color-primary-soft);border:1px solid var(--color-border);
  transition:box-shadow .25s ease,transform .25s ease;
}
.mega-card:hover{box-shadow:var(--shadow-card);transform:translateY(-2px)}
.mega-card img{width:100%;height:120px;object-fit:cover}
.mega-card span{display:block;padding:10px 14px;font-size:14px;font-weight:600;color:var(--color-text)}
.header-cta{margin-left:16px;padding:10px 22px;font-size:14px}
.nav-toggle{
  display:none;flex-direction:column;gap:5px;width:42px;height:42px;
  padding:10px;background:none;border:1px solid var(--color-border);
  border-radius:10px;cursor:pointer;margin-left:8px;
}
.nav-toggle span{display:block;height:2px;width:20px;background:var(--color-text);border-radius:2px;transition:transform .3s ease,opacity .3s ease}
.nav-toggle.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.active span:nth-child(2){opacity:0}
.nav-toggle.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.breadcrumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  padding:20px 0 8px;font-size:14px;color:var(--color-text-secondary);
}
.breadcrumb a{color:var(--color-text-secondary)}
.breadcrumb a:hover{color:var(--color-primary)}
.breadcrumb .sep{color:#B6C4D4}
.breadcrumb .current{
  color:var(--color-text);font-weight:600;
  max-width:260px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.post-main{padding-bottom:var(--space-section)}
.post-article{
  max-width:960px;margin:0 auto 40px;
  background:var(--color-surface);border-radius:var(--radius-card);
  border:1px solid var(--color-border);box-shadow:var(--shadow-card);
  padding:40px 48px 48px;
}
.post-header{
  display:flex;gap:36px;align-items:flex-start;
  background:var(--color-primary-soft);
  border-radius:var(--radius-card);
  padding:32px;margin:-40px -48px 36px;
}
.post-header-text{flex:1;min-width:0}
.post-header h1{font-size:34px;font-weight:800;color:var(--color-text);margin-bottom:14px}
.post-meta{display:flex;gap:16px;font-size:14px;color:var(--color-text-secondary);margin-bottom:14px;align-items:center}
.post-category{
  display:inline-block;padding:3px 10px;border-radius:6px;
  background:var(--color-primary);color:#fff;font-size:13px;font-weight:600;
}
.post-summary{font-size:16px;color:var(--color-text-secondary);line-height:1.8;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-header-media{flex-shrink:0;width:280px}
.post-header-media img{width:100%;height:200px;object-fit:cover;border-radius:12px;box-shadow:var(--shadow-card)}
.post-content{max-width:760px;margin:0 auto}
.post-content h2{font-size:26px;color:var(--color-text);margin:1.8em 0 .8em;padding-bottom:.4em;border-bottom:2px solid var(--color-primary-soft)}
.post-content h3{font-size:21px;color:var(--color-text);margin:1.5em 0 .6em}
.post-content h4{font-size:18px;color:var(--color-text);margin:1.3em 0 .5em}
.post-content p{margin-bottom:1.2em;line-height:1.8}
.post-content ul,.post-content ol{margin-bottom:1.2em;padding-left:1.5em}
.post-content li{line-height:1.8;margin-bottom:.4em}
.post-content a{color:var(--color-primary);text-decoration:underline;text-underline-offset:4px}
.post-content a:hover{color:var(--color-accent)}
.post-content blockquote{
  border-left:4px solid var(--color-primary);background:var(--color-primary-soft);
  padding:16px 24px;margin:1.4em 0;border-radius:0 12px 12px 0;
  color:var(--color-text-secondary);
}
.post-content img{border-radius:12px;margin:1.2em 0}
.post-content figure{margin:1.4em 0;text-align:center}
.post-content figcaption{font-size:13px;color:var(--color-text-secondary);margin-top:8px}
.post-content table{width:100%;border-collapse:collapse;margin:1.4em 0;font-size:15px}
.post-content th,.post-content td{border:1px solid var(--color-border);padding:12px 14px;text-align:left}
.post-content th{background:var(--color-primary-soft);font-weight:600;color:var(--color-text)}
.post-content tr:nth-child(even) td{background:#FAFCFF}
.post-content hr{border:none;border-top:1px solid var(--color-border);margin:2em 0}
.post-content strong{color:var(--color-text);font-weight:700}
.post-tags{
  display:flex;flex-wrap:wrap;gap:10px;
  margin:36px 0 24px;padding-top:24px;border-top:1px solid var(--color-border);
  max-width:760px;margin-left:auto;margin-right:auto;
}
.tag{
  display:inline-block;padding:4px 12px;border-radius:6px;
  background:var(--color-primary-soft);color:var(--color-primary);
  font-size:13px;font-weight:500;
  transition:background .25s ease,color .25s ease;
}
.tag:hover{background:var(--color-primary);color:#fff}
.post-back{text-align:center;margin:24px 0 0}
.post-pager{display:flex;gap:16px;max-width:760px;margin:32px auto 0}
.pager-link{
  flex:1;display:block;padding:16px 20px;
  background:var(--color-bg);border:1px solid var(--color-border);
  border-radius:var(--radius-card);
  transition:box-shadow .25s ease,border-color .25s ease,transform .25s ease;
}
.pager-link:hover{border-color:var(--color-primary);box-shadow:var(--shadow-card);transform:translateY(-2px)}
.pager-link span{display:block;font-size:13px;color:var(--color-text-secondary);margin-bottom:4px}
.pager-link strong{display:block;font-size:15px;font-weight:600;color:var(--color-text);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.pager-link.next{text-align:right}
.related-posts{padding:var(--space-section) 0 0}
.related-posts h2{font-size:28px;text-align:center;margin-bottom:36px;color:var(--color-text)}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.related-card{
  display:block;background:var(--color-surface);border:1px solid var(--color-border);
  border-radius:var(--radius-card);overflow:hidden;
  transition:box-shadow .25s ease,transform .25s ease,border-color .25s ease;
}
.related-card:hover{box-shadow:var(--shadow-card-hover);transform:translateY(-4px);border-color:var(--color-primary)}
.related-card img{width:100%;height:160px;object-fit:cover}
.related-card-body{padding:18px 20px 20px}
.related-card h3{font-size:17px;color:var(--color-text);margin-bottom:8px;line-height:1.5}
.related-card h3:hover{color:var(--color-primary)}
.related-card time{font-size:13px;color:var(--color-text-secondary)}
.comments-area{padding:var(--space-section) 0 0}
.comments-area h2{font-size:28px;text-align:center;margin-bottom:36px;color:var(--color-text)}
.comments-placeholder{
  max-width:760px;margin:0 auto;text-align:center;
  padding:40px 24px;background:var(--color-surface);
  border:1px dashed var(--color-border);border-radius:var(--radius-card);
  color:var(--color-text-secondary);font-size:15px;
}
.not-found{
  text-align:center;padding:80px 24px;background:var(--color-surface);
  border-radius:var(--radius-card);border:1px solid var(--color-border);
  box-shadow:var(--shadow-card);max-width:760px;margin:24px auto 0;
}
.not-found h1{font-size:30px;color:var(--color-text);margin-bottom:12px}
.not-found p{color:var(--color-text-secondary);margin-bottom:24px}
.site-footer{background:var(--color-dark);color:#AFC3D6;margin-top:var(--space-section);padding-top:64px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px}
.footer-logo{display:flex;align-items:baseline;gap:6px;margin-bottom:16px}
.footer-logo .brand-name{font-size:22px;font-weight:800;color:#fff}
.footer-logo .brand-sub{font-size:13px;color:#92A8BC;letter-spacing:1px}
.footer-brand p{font-size:14px;line-height:1.8;color:#92A8BC;max-width:320px}
.footer-col h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px}
.footer-col a{display:block;padding:6px 0;font-size:14px;color:#AFC3D6}
.footer-col a:hover{color:#fff}
.footer-col p{font-size:14px;color:#92A8BC;padding:4px 0}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:20px 0}
.footer-bottom p{font-size:14px;color:#92A8BC;text-align:center;margin:0}
@media (max-width:1024px){
  .header-inner{gap:16px}
  .main-nav{
    position:fixed;top:72px;left:0;right:0;bottom:0;
    background:var(--color-surface);
    flex-direction:column;align-items:flex-start;
    padding:24px;gap:8px;display:none;overflow-y:auto;
    border-top:1px solid var(--color-border);
    z-index:99;
  }
  .main-nav.open{display:flex}
  .nav-link{width:100%;font-size:18px;padding:12px 16px}
  .header-cta{margin-left:auto}
  .nav-toggle{display:flex}
  .mega-wrap{width:100%}
  .mega-toggle{width:100%;justify-content:space-between;padding:12px 16px;font-size:18px}
  .mega-panel{
    position:static;width:100%;opacity:1;visibility:visible;transform:none;
    display:none;box-shadow:none;border:none;padding:12px 16px 8px;
    grid-template-columns:1fr;background:var(--color-bg);
    border-radius:12px;margin-top:8px;
  }
  .mega-wrap.open .mega-panel{display:grid}
  .mega-card{display:none}
  .post-article{padding:28px 28px 40px}
  .post-header{margin:-28px -28px 28px}
}
@media (max-width:768px){
  :root{--space-section:48px}
  .brand-name{font-size:19px}
  .header-cta{display:none}
  .post-article{padding:0 0 32px;border-radius:16px;border:1px solid var(--color-border);box-shadow:var(--shadow-card)}
  .post-header{margin:0 0 24px;border-radius:var(--radius-card);padding:24px;flex-direction:column-reverse}
  .post-header-media{width:100%}
  .post-header-media img{height:180px}
  .post-header h1{font-size:26px}
  .related-grid{grid-template-columns:1fr}
  .post-pager{flex-direction:column}
  .pager-link.next{text-align:left}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .not-found{padding:48px 20px}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .header-inner{height:64px}
  .main-nav{top:64px}
  .brand-name{font-size:17px}
  .brand-sub{font-size:12px}
  .nav-toggle{width:38px;height:38px}
  .post-header{padding:20px}
  .post-header h1{font-size:22px}
  .post-meta{flex-wrap:wrap;gap:10px}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .related-posts h2,.comments-area h2{font-size:24px}
}

/* roulang page: category2 */
:root {
  --color-primary: #2F6DB3;
  --color-primary-strong: #1F4E82;
  --color-primary-soft: #EAF1F8;
  --color-accent: #C8433B;
  --color-bg: #F6F9FC;
  --color-surface: #FFFFFF;
  --color-text: #1B2B3C;
  --color-text-secondary: #4E6074;
  --color-border: #DFE7F0;
  --color-dark: #132A3E;
  --color-white: #FFFFFF;
  --radius-card: 16px;
  --radius-btn: 10px;
  --shadow-card: 0 6px 24px rgba(31,78,130,.08);
  --shadow-hover: 0 12px 32px rgba(31,78,130,.14);
  --container: 1200px;
  --space-section: 80px;
  --space-section-mobile: 48px;
  --font-stack: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", sans-serif;
}

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

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

body {
  font-family: var(--font-stack);
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  display: block;
  border: 0;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color .25s ease, border-color .25s ease, background .25s ease;
}

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

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: 4px;
}

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

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

/* ========== Buttons ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  border-radius: var(--radius-btn);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.4;
  border: 1px solid transparent;
  transition: all .25s ease;
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-white);
  box-shadow: 0 4px 12px rgba(47,109,179,.25);
}

.btn-primary:hover {
  background: var(--color-primary-strong);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
  text-decoration: none;
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 2px 6px rgba(31,78,130,.2);
}

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

.btn-outline:hover {
  background: var(--color-primary-soft);
  color: var(--color-primary-strong);
  text-decoration: none;
}

/* ========== Header ========== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  box-shadow: 0 2px 12px rgba(31,78,130,.04);
}

.header-inner {
  display: flex;
  align-items: center;
  height: 72px;
  gap: 32px;
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 8px;
  flex-shrink: 0;
  text-decoration: none;
}

.brand:hover {
  text-decoration: none;
}

.brand-name {
  font-size: 22px;
  font-weight: 800;
  color: var(--color-primary-strong);
  letter-spacing: .5px;
}

.brand-sub {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-secondary);
  background: var(--color-primary-soft);
  padding: 2px 8px;
  border-radius: 6px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  flex: 1;
}

.nav-link {
  display: inline-block;
  padding: 8px 14px;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text);
  border-radius: 8px;
  position: relative;
  text-decoration: none;
  transition: color .2s ease, background .2s ease;
}

.nav-link::after {
  content: '';
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 3px;
  height: 2px;
  background: var(--color-primary);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: center;
  transition: transform .25s ease;
}

.nav-link:hover {
  color: var(--color-primary);
  background: var(--color-primary-soft);
  text-decoration: none;
}

.nav-link:hover::after,
.nav-link.active::after {
  transform: scaleX(1);
}

.nav-link.active {
  color: var(--color-primary);
  font-weight: 700;
}

/* Mega Menu */
.mega-wrap {
  position: relative;
}

.mega-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text);
  border-radius: 8px;
  cursor: pointer;
  transition: background .2s ease;
}

.mega-toggle:hover {
  background: var(--color-primary-soft);
  color: var(--color-primary);
}

.mega-toggle svg {
  width: 16px;
  height: 16px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: transform .25s ease;
}

.mega-wrap:hover .mega-toggle svg {
  transform: rotate(180deg);
}

.mega-panel {
  position: absolute;
  top: calc(100% + 12px);
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  width: 720px;
  max-width: calc(100vw - 48px);
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  box-shadow: 0 18px 48px rgba(19,42,62,.16);
  padding: 28px;
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 28px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity .25s ease, transform .25s ease, visibility .25s ease;
}

.mega-wrap:hover .mega-panel,
.mega-wrap:focus-within .mega-panel {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.mega-col {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.mega-heading {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: .5px;
  margin-bottom: 6px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
}

.mega-link {
  font-size: 14px;
  color: var(--color-text);
  padding: 6px 0;
  border-radius: 6px;
  display: block;
  text-decoration: none;
  transition: color .2s ease, padding-left .2s ease;
}

.mega-link:hover {
  color: var(--color-primary);
  padding-left: 6px;
  text-decoration: none;
}

.mega-card {
  display: flex;
  flex-direction: column;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  text-decoration: none;
  transition: box-shadow .25s ease, border-color .25s ease;
}

.mega-card:hover {
  box-shadow: var(--shadow-hover);
  border-color: rgba(47,109,179,.4);
  text-decoration: none;
}

.mega-card img {
  width: 100%;
  height: 100px;
  object-fit: cover;
}

.mega-card span {
  padding: 10px 12px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
}

.header-cta {
  margin-left: auto;
  flex-shrink: 0;
  padding: 10px 22px;
  font-size: 15px;
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  border-radius: 8px;
  border: 1px solid var(--color-border);
  background: var(--color-white);
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform .25s ease, opacity .25s ease;
}

.nav-toggle:hover {
  background: var(--color-primary-soft);
}

/* ========== Page Banner ========== */
.page-banner {
  position: relative;
  background-image: linear-gradient(rgba(246,249,252,.92), rgba(246,249,252,.88)), url('/assets/images/backpic/back-2.webp');
  background-size: cover;
  background-position: center;
  padding: 88px 0 64px;
  border-bottom: 1px solid var(--color-border);
}

.banner-inner {
  max-width: 780px;
}

.crumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.crumbs a {
  color: var(--color-text-secondary);
  text-decoration: none;
}

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

.crumbs .sep {
  color: var(--color-border);
}

.crumbs .current {
  color: var(--color-primary);
  font-weight: 600;
}

.banner-title {
  font-size: 38px;
  font-weight: 800;
  line-height: 1.3;
  color: var(--color-text);
  letter-spacing: .5px;
  margin-bottom: 16px;
}

.banner-title .accent {
  color: var(--color-accent);
}

.banner-desc {
  font-size: 17px;
  color: var(--color-text-secondary);
  line-height: 1.8;
  max-width: 660px;
}

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

.section-head {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 48px;
}

.section-head .section-kicker {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary);
  background: var(--color-primary-soft);
  padding: 4px 14px;
  border-radius: 6px;
  margin-bottom: 12px;
}

.section-head h2 {
  font-size: 30px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--color-text);
  margin-bottom: 12px;
}

.section-head p {
  font-size: 16px;
  color: var(--color-text-secondary);
}

/* ========== Timeline ========== */
.timeline-section {
  background: var(--color-surface);
}

.timeline {
  position: relative;
  max-width: 820px;
  margin: 0 auto;
  padding-left: 48px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 15px;
  top: 6px;
  bottom: 6px;
  width: 3px;
  background: linear-gradient(to bottom, rgba(47,109,179,.25), rgba(47,109,179,.55));
  border-radius: 3px;
}

.timeline-item {
  position: relative;
  margin-bottom: 36px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 24px 28px;
  box-shadow: var(--shadow-card);
  transition: box-shadow .3s ease, border-color .3s ease, transform .3s ease;
}

.timeline-item:last-child {
  margin-bottom: 0;
}

.timeline-item:hover {
  box-shadow: var(--shadow-hover);
  border-color: rgba(47,109,179,.35);
  transform: translateY(-2px);
}

.timeline-dot {
  position: absolute;
  left: -45px;
  top: 26px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--color-white);
  border: 4px solid var(--color-primary);
  z-index: 2;
}

.timeline-step {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}

.timeline-step .step-num {
  font-size: 13px;
  font-weight: 700;
  background: var(--color-primary);
  color: var(--color-white);
  border-radius: 6px;
  padding: 2px 10px;
  letter-spacing: .5px;
}

.timeline-step h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text);
}

.timeline-item p {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.75;
}

/* ========== Spotlight blocks ========== */
.spotlight-section {
  background: var(--color-bg);
}

.spotlight-list {
  display: flex;
  flex-direction: column;
  gap: 56px;
}

.spotlight-item {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  background: var(--color-surface);
  border-radius: var(--radius-card);
  padding: 36px;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-card);
  transition: box-shadow .3s ease, border-color .3s ease;
}

.spotlight-item:hover {
  box-shadow: var(--shadow-hover);
  border-color: rgba(47,109,179,.3);
}

.spotlight-item:nth-child(even) .spotlight-media {
  order: 2;
}

.spotlight-media {
  overflow: hidden;
  border-radius: 12px;
  box-shadow: 0 8px 20px rgba(31,78,130,.12);
}

.spotlight-media img {
  width: 100%;
  height: 240px;
  object-fit: cover;
  transition: transform .4s ease;
}

.spotlight-item:hover .spotlight-media img {
  transform: scale(1.03);
}

.spotlight-content h3 {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
}

.spotlight-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-primary);
  background: var(--color-primary-soft);
  padding: 3px 10px;
  border-radius: 6px;
  margin-bottom: 12px;
}

.spotlight-content p {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: 16px;
}

.spotlight-list-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.spotlight-list-meta span {
  font-size: 13px;
  color: var(--color-text);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  padding: 4px 12px;
  border-radius: 20px;
  font-weight: 500;
}

/* ========== Stats ========== */
.stats-section {
  background: var(--color-dark);
  background-image: radial-gradient(circle at 20% 30%, rgba(47,109,179,.25) 0%, transparent 40%);
  padding: 64px 0;
}

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

.stat-item {
  text-align: center;
  padding: 20px;
  border-radius: var(--radius-card);
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.08);
  transition: background .3s ease, transform .3s ease;
}

.stat-item:hover {
  background: rgba(255,255,255,.08);
  transform: translateY(-4px);
}

.stat-num {
  font-size: 42px;
  font-weight: 800;
  color: var(--color-white);
  line-height: 1.2;
  margin-bottom: 4px;
}

.stat-num span {
  font-size: 20px;
  font-weight: 600;
  color: #9FBBD9;
}

.stat-label {
  font-size: 14px;
  color: #9FBBD9;
}

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

.faq-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  max-width: 1000px;
  margin: 0 auto;
}

.faq-item {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 24px 28px;
  transition: box-shadow .25s ease, border-color .25s ease;
}

.faq-item:hover {
  border-color: rgba(47,109,179,.35);
  box-shadow: var(--shadow-card);
}

.faq-item h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 10px;
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.faq-item h3::before {
  content: '';
  flex-shrink: 0;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
  margin-top: 10px;
}

.faq-item p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.8;
}

/* ========== Related ========== */
.related-section {
  background: var(--color-bg);
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 36px;
}

.related-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  overflow: hidden;
  text-decoration: none;
  transition: box-shadow .3s ease, border-color .3s ease, transform .3s ease;
}

.related-card:hover {
  box-shadow: var(--shadow-hover);
  border-color: rgba(47,109,179,.4);
  transform: translateY(-4px);
  text-decoration: none;
}

.related-card img {
  width: 100%;
  height: 160px;
  object-fit: cover;
}

.related-card-body {
  padding: 20px 22px;
}

.related-card-body h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 6px;
}

.related-card-body p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: 12px;
}

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

.related-card-more::after {
  content: '→';
  transition: transform .2s ease;
}

.related-card:hover .related-card-more::after {
  transform: translateX(4px);
}

.related-action {
  text-align: center;
}

/* ========== CTA ========== */
.cta-section {
  background: var(--color-primary-soft);
  background-image: linear-gradient(to right, rgba(47,109,179,.06) 1px, transparent 1px), linear-gradient(to bottom, rgba(47,109,179,.06) 1px, transparent 1px);
  background-size: 28px 28px;
  padding: 64px 0;
  text-align: center;
}

.cta-box {
  max-width: 640px;
  margin: 0 auto;
}

.cta-box h2 {
  font-size: 30px;
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: 12px;
}

.cta-box p {
  font-size: 16px;
  color: var(--color-text-secondary);
  margin-bottom: 28px;
}

.cta-box .btn {
  margin: 0 6px 8px;
}

/* ========== Footer ========== */
.site-footer {
  background: var(--color-dark);
  color: rgba(255,255,255,.8);
  padding-top: 64px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 48px;
}

.footer-brand .footer-logo {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 16px;
}

.footer-brand .brand-name {
  color: var(--color-white);
  font-size: 22px;
}

.footer-brand .brand-sub {
  background: rgba(255,255,255,.12);
  color: rgba(255,255,255,.7);
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255,255,255,.6);
  max-width: 320px;
}

.footer-col h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 16px;
}

.footer-col a {
  display: block;
  font-size: 14px;
  color: rgba(255,255,255,.6);
  padding: 6px 0;
  text-decoration: none;
  transition: color .2s ease;
}

.footer-col a:hover {
  color: var(--color-white);
}

.footer-col p {
  font-size: 14px;
  color: rgba(255,255,255,.6);
  padding: 4px 0;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.1);
  padding: 20px 0;
  text-align: center;
}

.footer-bottom p {
  font-size: 14px;
  color: rgba(255,255,255,.5);
}

/* ========== Responsive ========== */
@media (max-width: 1024px) {
  .header-inner {
    gap: 16px;
  }
  .main-nav {
    gap: 2px;
  }
  .nav-link {
    padding: 8px 10px;
    font-size: 14px;
  }
  .mega-panel {
    width: 660px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 768px) {
  :root {
    --space-section: 48px;
  }
  .header-inner {
    height: 64px;
  }
  .main-nav {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-white);
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    padding: 24px;
    gap: 8px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity .25s ease, transform .25s ease, visibility .25s ease;
    z-index: 99;
    overflow-y: auto;
  }
  .main-nav.open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }
  .nav-link {
    font-size: 18px;
    padding: 14px 12px;
    border-bottom: 1px solid var(--color-border);
    border-radius: 0;
  }
  .nav-link::after {
    display: none;
  }
  .mega-wrap {
    width: 100%;
  }
  .mega-toggle {
    width: 100%;
    justify-content: space-between;
    font-size: 18px;
    padding: 14px 12px;
    border-bottom: 1px solid var(--color-border);
    border-radius: 0;
  }
  .mega-panel {
    position: static;
    width: 100%;
    max-width: 100%;
    transform: none;
    grid-template-columns: 1fr;
    gap: 16px;
    padding: 16px 12px;
    border: none;
    border-radius: 0;
    box-shadow: none;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    display: none;
    background: var(--color-bg);
  }
  .mega-wrap.open .mega-panel {
    display: grid;
  }
  .header-cta {
    display: none;
  }
  .nav-toggle {
    display: flex;
    margin-left: auto;
  }
  .page-banner {
    padding: 48px 0 40px;
  }
  .banner-title {
    font-size: 28px;
  }
  .banner-desc {
    font-size: 15px;
  }
  .section-head h2 {
    font-size: 24px;
  }
  .timeline {
    padding-left: 40px;
  }
  .timeline::before {
    left: 12px;
  }
  .timeline-dot {
    left: -38px;
    width: 18px;
    height: 18px;
  }
  .timeline-item {
    padding: 18px 20px;
  }
  .spotlight-item {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 24px;
  }
  .spotlight-item:nth-child(even) .spotlight-media {
    order: 0;
  }
  .spotlight-media img {
    height: 200px;
  }
  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }
  .stat-num {
    font-size: 32px;
  }
  .faq-list {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .related-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .cta-box h2 {
    font-size: 24px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
    padding-bottom: 32px;
  }
  .btn {
    width: 100%;
    margin-bottom: 8px;
  }
  .cta-box .btn {
    width: auto;
    min-width: 200px;
  }
}

@media (max-width: 480px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }
  .brand-name {
    font-size: 19px;
  }
  .brand-sub {
    font-size: 12px;
    padding: 1px 6px;
  }
}

/* roulang page: category3 */
/* ========== 设计变量 ========== */
        :root {
            --color-primary: #2F6DB3;
            --color-primary-strong: #1F4E82;
            --color-primary-soft: #EAF1F8;
            --color-accent: #C8433B;
            --color-bg: #F6F9FC;
            --color-surface: #FFFFFF;
            --color-text: #1B2B3C;
            --color-text-secondary: #4E6074;
            --color-border: #DFE7F0;
            --shadow-card: 0 6px 24px rgba(31, 78, 130, .08);
            --shadow-card-hover: 0 12px 32px rgba(31, 78, 130, .14);
            --shadow-header: 0 2px 12px rgba(31, 78, 130, .06);
            --radius-lg: 16px;
            --radius-md: 10px;
            --radius-sm: 6px;
            --container: 1200px;
            --space-section: 80px;
            --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", sans-serif;
        }

        /* ========== Reset / 基础 ========== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.8;
            color: var(--color-text);
            background-color: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

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

        ul,
        ol {
            padding-left: 1.25rem;
        }

        button {
            font-family: inherit;
            cursor: pointer;
        }

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

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

        .section-lead {
            color: var(--color-text-secondary);
            font-size: 16px;
            margin-top: 8px;
            max-width: 640px;
        }

        .section h2 {
            font-size: 30px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--color-text);
        }

        /* ========== 按钮 ========== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: var(--radius-md);
            font-size: 15px;
            font-weight: 600;
            line-height: 1.4;
            border: 1px solid transparent;
            text-decoration: none;
            transition: all .25s ease;
            white-space: nowrap;
        }

        .btn:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 3px;
        }

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

        .btn-primary:hover {
            background-color: var(--color-primary-strong);
            border-color: var(--color-primary-strong);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(31, 78, 130, .28);
            text-decoration: none;
        }

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

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

        /* ========== Header / 导航 ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: #fff;
            border-bottom: 1px solid var(--color-border);
            box-shadow: var(--shadow-header);
        }

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

        .brand {
            display: flex;
            align-items: baseline;
            gap: 8px;
            text-decoration: none;
            flex-shrink: 0;
        }

        .brand:hover {
            text-decoration: none;
        }

        .brand-name {
            font-size: 22px;
            font-weight: 800;
            color: var(--color-text);
            letter-spacing: 1px;
            line-height: 1.2;
        }

        .brand-sub {
            font-size: 13px;
            font-weight: 500;
            color: var(--color-primary);
            background: var(--color-primary-soft);
            padding: 2px 8px;
            border-radius: 4px;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .nav-link {
            padding: 8px 16px;
            color: var(--color-text);
            text-decoration: none;
            font-size: 15px;
            font-weight: 500;
            border-radius: 8px;
            transition: all .2s ease;
            position: relative;
        }

        .nav-link:hover {
            color: var(--color-primary);
            background: var(--color-primary-soft);
            text-decoration: none;
        }

        .nav-link.active {
            color: var(--color-primary);
            font-weight: 700;
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 3px;
            height: 2px;
            background: var(--color-primary);
            border-radius: 2px;
        }

        /* Mega Menu */
        .mega-wrap {
            position: relative;
        }

        .mega-toggle {
            display: flex;
            align-items: center;
            gap: 4px;
            padding: 8px 16px;
            font-size: 15px;
            font-weight: 500;
            border: none;
            background: transparent;
            color: var(--color-text);
            cursor: pointer;
            border-radius: 8px;
            transition: all .2s ease;
        }

        .mega-toggle:hover,
        .mega-wrap:focus-within .mega-toggle {
            color: var(--color-primary);
            background: var(--color-primary-soft);
        }

        .mega-toggle svg {
            width: 14px;
            height: 14px;
            fill: none;
            stroke: currentColor;
            stroke-width: 2;
            stroke-linecap: round;
            stroke-linejoin: round;
            transition: transform .25s ease;
        }

        .mega-wrap:hover .mega-toggle svg,
        .mega-wrap:focus-within .mega-toggle svg {
            transform: rotate(180deg);
        }

        .mega-panel {
            position: absolute;
            top: calc(100% + 14px);
            left: 50%;
            transform: translateX(-50%) translateY(8px);
            width: 720px;
            background: #fff;
            border-radius: var(--radius-lg);
            box-shadow: 0 18px 48px rgba(31, 78, 130, .16);
            border: 1px solid var(--color-border);
            display: grid;
            grid-template-columns: 1fr 1fr auto;
            gap: 28px;
            padding: 28px;
            opacity: 0;
            visibility: hidden;
            transition: all .25s ease-in-out;
            z-index: 60;
        }

        .mega-wrap:hover .mega-panel,
        .mega-wrap:focus-within .mega-panel {
            opacity: 1;
            visibility: visible;
            transform: translateX(-50%) translateY(0);
        }

        .mega-heading {
            display: block;
            font-size: 13px;
            font-weight: 700;
            color: var(--color-text-secondary);
            margin-bottom: 12px;
            letter-spacing: .5px;
        }

        .mega-link {
            display: block;
            padding: 6px 0;
            font-size: 14px;
            color: var(--color-text);
            text-decoration: none;
            border-radius: 6px;
            transition: color .2s ease;
        }

        .mega-link:hover {
            color: var(--color-primary);
            text-decoration: none;
        }

        .mega-card {
            display: block;
            width: 160px;
            border-radius: 12px;
            overflow: hidden;
            border: 1px solid var(--color-border);
            background: #fff;
            transition: box-shadow .25s ease, transform .25s ease;
        }

        .mega-card:hover {
            box-shadow: var(--shadow-card);
            transform: translateY(-2px);
            text-decoration: none;
        }

        .mega-card img {
            width: 100%;
            height: 96px;
            object-fit: cover;
        }

        .mega-card span {
            display: block;
            padding: 10px 12px;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-text);
            line-height: 1.5;
        }

        .header-cta {
            padding: 10px 22px;
            font-size: 14px;
            flex-shrink: 0;
        }

        /* 汉堡按钮 */
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            background: transparent;
            border: none;
            cursor: pointer;
            border-radius: 8px;
            transition: background .2s ease;
        }

        .nav-toggle:hover {
            background: var(--color-primary-soft);
        }

        .nav-toggle span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--color-text);
            border-radius: 2px;
            transition: all .25s ease;
        }

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

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

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

        /* ========== 页头 Hero ========== */
        .page-hero {
            background: linear-gradient(135deg, var(--color-primary-soft) 0%, #f9fbff 60%, #fff 100%);
            padding: 64px 0 56px;
            position: relative;
            overflow: hidden;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            bottom: 0;
            left: 0;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            opacity: .08;
            pointer-events: none;
        }

        .page-hero .container {
            position: relative;
            z-index: 1;
        }

        .breadcrumb {
            font-size: 13px;
            color: var(--color-text-secondary);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
        }

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

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

        .breadcrumb-sep {
            color: var(--color-border);
        }

        .page-hero h1 {
            font-size: 38px;
            font-weight: 800;
            line-height: 1.3;
            color: var(--color-text);
            margin-bottom: 14px;
            max-width: 680px;
        }

        .hero-desc {
            font-size: 17px;
            line-height: 1.7;
            color: var(--color-text-secondary);
            max-width: 640px;
            margin-bottom: 24px;
        }

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

        /* ========== 服务卡片网格 ========== */
        .service-card-section {
            background: var(--color-bg);
        }

        .service-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
            margin-top: 36px;
        }

        .service-card {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: box-shadow .3s ease, transform .3s ease, border-color .3s ease;
        }

        .service-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
            border-color: rgba(47, 109, 179, .4);
        }

        .service-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }

        .service-card-body {
            padding: 24px;
        }

        .card-tag {
            display: inline-block;
            padding: 4px 10px;
            border-radius: var(--radius-sm);
            background: var(--color-primary-soft);
            color: var(--color-primary);
            font-size: 12px;
            font-weight: 600;
            margin-bottom: 12px;
            letter-spacing: .3px;
        }

        .service-card h3 {
            font-size: 20px;
            font-weight: 600;
            line-height: 1.4;
            color: var(--color-text);
            margin-bottom: 10px;
        }

        .service-card p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--color-text-secondary);
            margin: 0;
        }

        /* ========== 数据指标带 ========== */
        .stats-band {
            background: #132A3E;
            border-radius: 20px;
            padding: 48px 40px;
            position: relative;
            overflow: hidden;
        }

        .stats-band::before {
            content: '';
            position: absolute;
            top: -40px;
            right: -40px;
            width: 220px;
            height: 220px;
            background: radial-gradient(circle, rgba(47, 109, 179, .3), transparent 70%);
            border-radius: 50%;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            position: relative;
            z-index: 1;
        }

        .stat-item {
            text-align: center;
            padding: 16px 8px;
        }

        .stat-num {
            display: block;
            font-size: 32px;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 6px;
            letter-spacing: .5px;
        }

        .stat-label {
            display: block;
            font-size: 14px;
            color: rgba(255, 255, 255, .72);
            line-height: 1.5;
        }

        /* ========== 服务流程 ========== */
        .process-section {
            background: #fff;
        }

        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 36px;
            position: relative;
        }

        .process-grid::before {
            content: '';
            position: absolute;
            top: 28px;
            left: 50px;
            right: 50px;
            height: 2px;
            background: var(--color-border);
            z-index: 0;
        }

        .process-step {
            position: relative;
            z-index: 1;
            padding: 24px;
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            transition: box-shadow .25s ease, transform .25s ease;
        }

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

        .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: var(--color-primary-soft);
            color: var(--color-primary);
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .process-step h3 {
            font-size: 18px;
            font-weight: 600;
            line-height: 1.4;
            color: var(--color-text);
            margin-bottom: 8px;
        }

        .process-step p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--color-text-secondary);
            margin: 0;
        }

        /* ========== 相关链接 ========== */
        .related-section {
            background: var(--color-bg);
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 36px;
        }

        .related-card {
            display: block;
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            text-decoration: none;
            box-shadow: var(--shadow-card);
            transition: all .25s ease;
        }

        .related-card:hover {
            border-color: rgba(47, 109, 179, .4);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            text-decoration: none;
        }

        .related-title {
            display: block;
            font-size: 18px;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 8px;
        }

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

        .related-text {
            display: block;
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.6;
        }

        .related-cta {
            margin-top: 32px;
            text-align: center;
        }

        /* ========== FAQ ========== */
        .faq-section {
            background: #fff;
        }

        .faq-list {
            max-width: 860px;
            margin: 36px auto 0;
        }

        .faq-item {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            margin-bottom: 14px;
            overflow: hidden;
            transition: border-color .25s ease, box-shadow .25s ease;
        }

        .faq-item.open {
            border-color: rgba(47, 109, 179, .35);
            box-shadow: var(--shadow-card);
        }

        .faq-toggle {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            width: 100%;
            padding: 22px 24px;
            background: transparent;
            border: none;
            text-align: left;
            cursor: pointer;
        }

        .faq-toggle h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--color-text);
            line-height: 1.4;
            margin: 0;
        }

        .faq-icon {
            position: relative;
            width: 24px;
            height: 24px;
            flex-shrink: 0;
            border-radius: 50%;
            background: var(--color-primary-soft);
            transition: background .25s ease, transform .3s ease;
        }

        .faq-icon::before,
        .faq-icon::after {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            background: var(--color-primary);
            border-radius: 2px;
            transform: translate(-50%, -50%);
        }

        .faq-icon::before {
            width: 10px;
            height: 2px;
        }

        .faq-icon::after {
            width: 2px;
            height: 10px;
            transition: opacity .2s ease;
        }

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

        .faq-item.open .faq-icon::before,
        .faq-item.open .faq-icon::after {
            background: #fff;
        }

        .faq-answer {
            max-height: 0;
            padding: 0 24px;
            overflow: hidden;
            transition: max-height .35s ease, padding .35s ease;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 22px;
        }

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

        /* ========== CTA ========== */
        .cta-section {
            background: var(--color-bg);
        }

        .cta-box {
            background: var(--color-primary-soft);
            border: 1px solid rgba(47, 109, 179, .18);
            border-radius: 20px;
            padding: 56px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-box::before {
            content: '';
            position: absolute;
            top: -30px;
            right: -30px;
            width: 160px;
            height: 160px;
            border-radius: 50%;
            background: rgba(47, 109, 179, .08);
        }

        .cta-box h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 12px;
        }

        .cta-box p {
            font-size: 16px;
            color: var(--color-text-secondary);
            margin-bottom: 28px;
            max-width: 520px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-actions {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }

        /* ========== Footer ========== */
        .site-footer {
            background: #132A3E;
            color: rgba(255, 255, 255, .82);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
            gap: 48px;
            padding-top: 72px;
            padding-bottom: 56px;
        }

        .footer-brand .footer-logo {
            display: flex;
            align-items: baseline;
            gap: 8px;
            margin-bottom: 16px;
        }

        .footer-brand .brand-name {
            color: #fff;
            font-size: 22px;
            font-weight: 800;
        }

        .footer-brand .brand-sub {
            background: rgba(255, 255, 255, .12);
            color: rgba(255, 255, 255, .9);
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, .68);
            max-width: 300px;
            margin: 0;
        }

        .footer-col h4 {
            font-size: 16px;
            color: #fff;
            margin-bottom: 16px;
            font-weight: 600;
        }

        .footer-col a {
            display: block;
            color: rgba(255, 255, 255, .68);
            font-size: 14px;
            padding: 5px 0;
            text-decoration: none;
            transition: color .2s ease;
        }

        .footer-col a:hover {
            color: #fff;
            text-decoration: none;
        }

        .footer-col p {
            font-size: 14px;
            color: rgba(255, 255, 255, .68);
            padding: 5px 0;
            margin: 0;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .08);
            padding: 24px 0;
        }

        .footer-bottom p {
            font-size: 13px;
            color: rgba(255, 255, 255, .5);
            text-align: center;
            margin: 0;
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1199px) {
            .mega-panel {
                width: 640px;
                left: auto;
                right: 0;
                transform: translateY(8px);
            }

            .mega-wrap:hover .mega-panel,
            .mega-wrap:focus-within .mega-panel {
                transform: translateY(0);
            }

            .mega-card {
                width: 140px;
            }
        }

        @media (max-width: 991px) {
            .nav-toggle {
                display: flex;
            }

            .header-cta {
                display: none;
            }

            .main-nav {
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                background: #fff;
                padding: 20px 24px 28px;
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
                border-bottom: 1px solid var(--color-border);
                box-shadow: 0 16px 40px rgba(31, 78, 130, .1);
                display: none;
                z-index: 99;
            }

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

            .nav-link.active::after {
                left: 16px;
                right: auto;
                width: 24px;
            }

            .mega-wrap {
                width: 100%;
            }

            .mega-toggle {
                width: 100%;
                justify-content: space-between;
                padding: 12px 16px;
            }

            .mega-panel {
                position: static;
                width: 100%;
                opacity: 1;
                visibility: visible;
                transform: none;
                display: none;
                grid-template-columns: 1fr;
                gap: 20px;
                box-shadow: none;
                border: none;
                border-left: 2px solid var(--color-primary-soft);
                border-radius: 0;
                padding: 8px 0 8px 16px;
                margin-top: 8px;
            }

            .mega-wrap:hover .mega-panel,
            .mega-wrap:focus-within .mega-panel {
                transform: none;
            }

            .mega-wrap.open .mega-panel {
                display: grid;
            }

            .mega-card {
                width: 100%;
                max-width: 300px;
            }

            /* 页头 */
            .page-hero {
                padding: 48px 0 40px;
            }

            .page-hero h1 {
                font-size: 32px;
            }

            /* 服务卡片 */
            .service-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            /* 数据指标 */
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }

            /* 流程 */
            .process-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }

            .process-grid::before {
                display: none;
            }

            /* 相关 */
            .related-grid {
                grid-template-columns: 1fr;
            }

            /* Footer */
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 40px;
                padding-top: 56px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --space-section: 48px;
            }

            .section h2 {
                font-size: 26px;
            }

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

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

            .service-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .stats-band {
                padding: 32px 24px;
            }

            .stat-num {
                font-size: 26px;
            }

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

            .cta-box {
                padding: 40px 24px;
            }

            .cta-box h2 {
                font-size: 22px;
            }

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

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
                padding-top: 48px;
                padding-bottom: 40px;
            }

            .btn {
                padding: 12px 24px;
                font-size: 14px;
                width: 100%;
            }

            .hero-actions {
                flex-direction: column;
                width: 100%;
            }

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

            .cta-actions {
                flex-direction: column;
                width: 100%;
            }

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

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

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

            .brand-sub {
                font-size: 12px;
                padding: 2px 6px;
            }

            .page-hero {
                padding: 40px 0 36px;
            }

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

            .stat-item {
                padding: 12px 4px;
            }

            .stat-num {
                font-size: 24px;
            }
        }