/* roulang page: index */
:root{
  --brand-600:#1467C8;
  --brand-700:#0E4F9E;
  --brand-100:#D6E6FA;
  --brand-50:#EAF2FD;
  --accent-500:#FF7A29;
  --accent-600:#E8651A;
  --teal-500:#12A594;
  --ink:#0F1B2D;
  --body:#33445C;
  --muted:#6B7A90;
  --line:#E4E9F2;
  --bg:#F6F8FB;
  --white:#FFFFFF;
  --danger:#D64545;
  --r-card:14px;
  --r-band:20px;
  --r-btn:10px;
  --r-img:12px;
  --sh-sm:0 1px 2px rgba(15,27,45,.06);
  --sh-md:0 6px 18px rgba(15,27,45,.08);
  --sh-lg:0 16px 40px rgba(15,27,45,.10);
  --sec-y:92px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:'PingFang SC','Hiragino Sans GB','Microsoft YaHei','Source Han Sans SC','Noto Sans SC',system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--body);
  background:var(--white);
  letter-spacing:.01em;
}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
img{display:block;max-width:100%;height:auto;object-fit:cover;}
a{color:var(--brand-700);text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease,box-shadow .2s ease,transform .2s ease;}
a:hover{color:var(--accent-600);}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit;}
input,textarea,select{font-family:inherit;font-size:15px;color:var(--body);}
:focus-visible{outline:2px solid rgba(20,103,200,.45);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.no-scrollbar::-webkit-scrollbar{display:none;}
.no-scrollbar{-ms-overflow-style:none;scrollbar-width:none;}
.line-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.line-3{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.num{font-family:system-ui,-apple-system,sans-serif;font-variant-numeric:tabular-nums;}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
  transition:background-color .2s ease,color .2s ease,box-shadow .2s ease,transform .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--accent-500);color:#fff;box-shadow:var(--sh-sm);}
.btn-primary:hover{background:var(--accent-600);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-md);}
.btn-primary:active{transform:translateY(1px);}
.btn-outline{background:#fff;color:var(--brand-700);border:1px solid var(--brand-600);}
.btn-outline:hover{background:var(--brand-50);color:var(--brand-700);border-color:var(--brand-700);}
.btn-solid{background:var(--brand-600);color:#fff;}
.btn-solid:hover{background:var(--brand-700);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-md);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--brand-700);}
.link-more i{transition:transform .2s ease;}
.link-more:hover{text-decoration:none;color:var(--accent-600);}
.link-more:hover i{transform:translateX(3px);}

/* 头部 */
.site-header{position:relative;z-index:50;background:#fff;}
.header-top{border-bottom:1px solid var(--line);}
.header-top .container{display:flex;align-items:center;gap:20px;height:64px;}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-mark{
  width:34px;height:34px;flex:0 0 34px;display:flex;align-items:center;justify-content:center;
  background:var(--brand-600);color:#fff;font-size:14px;font-weight:700;
  clip-path:polygon(25% 3%,75% 3%,100% 50%,75% 97%,25% 97%,0 50%);
  font-family:system-ui,sans-serif;letter-spacing:.02em;
}
.logo-text{font-size:18px;font-weight:700;color:var(--ink);letter-spacing:.01em;white-space:nowrap;}
.logo:hover .logo-text{color:var(--brand-700);}
.search-box{
  display:flex;align-items:center;gap:8px;height:40px;width:280px;max-width:100%;
  padding:0 16px;border:1px solid var(--line);border-radius:999px;background:var(--bg);
  transition:border-color .2s ease,background-color .2s ease;
}
.search-box:focus-within{border-color:var(--brand-600);background:#fff;box-shadow:0 0 0 3px rgba(20,103,200,.10);}
.search-box i{color:var(--muted);font-size:14px;}
.search-box input{flex:1 1 auto;min-width:0;border:none;background:transparent;outline:none;font-size:14px;}
.search-box input::placeholder{color:var(--muted);}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px;}
.menu-toggle{
  display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
  align-items:center;justify-content:center;color:var(--ink);font-size:16px;background:#fff;
}
.menu-toggle:hover{border-color:var(--brand-600);color:var(--brand-700);}
.channel-nav{
  position:sticky;top:0;z-index:40;background:#fff;border-bottom:1px solid var(--line);
  box-shadow:0 2px 8px rgba(15,27,45,.04);
}
.channel-inner{display:flex;align-items:center;gap:8px;height:48px;overflow-x:auto;white-space:nowrap;}
.pill{
  display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:999px;
  font-size:14px;font-weight:500;color:var(--body);background:transparent;
}
.pill:hover{background:var(--brand-50);color:var(--brand-700);}
.pill.active{background:var(--brand-600);color:#fff;box-shadow:var(--sh-sm);}
.pill.active:hover{background:var(--brand-700);color:#fff;}

/* 移动抽屉 */
.drawer{
  position:fixed;inset:0;z-index:60;display:none;
}
.drawer.open{display:block;}
.drawer-mask{position:absolute;inset:0;background:rgba(15,27,45,.42);}
.drawer-panel{
  position:absolute;top:0;right:0;width:280px;max-width:86%;height:100%;background:#fff;
  padding:20px;box-shadow:var(--sh-lg);overflow-y:auto;
}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;}
.drawer-head span{font-size:16px;font-weight:700;color:var(--ink);}
.drawer-close{width:36px;height:36px;border-radius:10px;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;color:var(--ink);}
.drawer-links{display:flex;flex-direction:column;gap:6px;}
.drawer-links a{padding:12px 14px;border-radius:10px;font-size:15px;color:var(--body);background:var(--bg);}
.drawer-links a:hover{background:var(--brand-50);color:var(--brand-700);}
.drawer-links a.active{background:var(--brand-600);color:#fff;}

/* 首屏 */
.hero{padding:64px 0 72px;background:#fff;overflow:hidden;}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;border-radius:999px;
  background:var(--brand-50);color:var(--brand-700);font-size:13px;font-weight:600;
}
.hero-title{
  margin-top:20px;font-size:clamp(30px,4vw,46px);line-height:1.25;font-weight:700;color:var(--ink);letter-spacing:.01em;
}
.hero-sub{margin-top:18px;font-size:19px;line-height:1.7;color:var(--body);max-width:34em;}
.hero-cta{margin-top:30px;display:flex;flex-wrap:wrap;gap:14px;}
.trust-list{margin-top:28px;display:flex;flex-wrap:wrap;gap:10px 18px;font-size:13px;color:var(--muted);}
.trust-list li{display:flex;align-items:center;gap:7px;}
.trust-list i{color:var(--teal-500);font-size:12px;}
.hero-media{position:relative;border-radius:16px;overflow:hidden;box-shadow:var(--sh-lg);background:var(--brand-50);}
.hero-media img{width:100%;aspect-ratio:16/11;}
.hero-media::after{content:"";position:absolute;inset:0;background:rgba(20,103,200,.06);pointer-events:none;}
.hero-chip{
  position:absolute;left:18px;bottom:18px;z-index:2;display:flex;align-items:center;gap:8px;
  background:#fff;border-radius:12px;padding:10px 14px;box-shadow:var(--sh-md);font-size:13px;color:var(--ink);font-weight:600;
}
.hero-chip i{color:var(--accent-500);}

/* 板块通用 */
.section{padding:var(--sec-y) 0;}
.section.bg-mist{background:var(--bg);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;}
.section-title{font-size:clamp(24px,3vw,30px);line-height:1.35;font-weight:600;color:var(--ink);}
.section-desc{margin-top:12px;font-size:15px;color:var(--muted);max-width:52em;}
.tag-line{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--brand-700);}
.tag-line::before{content:"";width:18px;height:3px;border-radius:2px;background:var(--accent-500);display:inline-block;}

/* 卖点 */
.feature-grid{display:grid;grid-template-columns:7fr 5fr;gap:24px;}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-sm);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--sh-md);border-color:var(--brand-100);}
.feature-main{overflow:hidden;display:flex;flex-direction:column;}
.feature-main .media{position:relative;overflow:hidden;background:var(--brand-50);}
.feature-main .media img{width:100%;aspect-ratio:16/9;transition:transform .3s ease;}
.feature-main:hover .media img{transform:scale(1.03);}
.feature-body{padding:28px;}
.num-badge{font-size:32px;font-weight:700;color:var(--brand-100);line-height:1;font-family:system-ui,sans-serif;}
.feature-title{margin-top:12px;font-size:21px;font-weight:600;color:var(--ink);line-height:1.5;}
.feature-text{margin-top:10px;font-size:15px;color:var(--muted);}
.feature-side{display:flex;flex-direction:column;gap:24px;}
.feature-side .card{padding:26px;flex:1 1 auto;display:flex;flex-direction:column;}
.feature-side .card.alt{background:var(--bg);}
.feature-side .card h3{font-size:19px;font-weight:600;color:var(--ink);line-height:1.5;}
.feature-side .card p{margin-top:8px;font-size:14px;color:var(--muted);}
.icon-badge{
  width:40px;height:40px;border-radius:12px;background:var(--brand-50);color:var(--brand-600);
  display:flex;align-items:center;justify-content:center;font-size:17px;margin-bottom:14px;
}

/* 场景 */
.scene-row{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
.scene-row + .scene-row{margin-top:64px;}
.scene-row.reverse .scene-media{order:2;}
.scene-media{border-radius:var(--r-img);overflow:hidden;box-shadow:var(--sh-md);background:var(--brand-50);}
.scene-media img{width:100%;aspect-ratio:16/10;transition:transform .3s ease;}
.scene-media:hover img{transform:scale(1.03);}
.scene-label{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;background:var(--brand-50);color:var(--brand-700);font-size:13px;font-weight:600;}
.scene-title{margin-top:14px;font-size:22px;font-weight:600;color:var(--ink);line-height:1.5;}
.scene-text{margin-top:12px;font-size:15px;color:var(--body);}
.check-list{margin-top:18px;display:flex;flex-direction:column;gap:10px;}
.check-list li{display:flex;gap:10px;font-size:15px;color:var(--body);}
.check-list i{color:var(--teal-500);font-size:14px;margin-top:6px;flex:0 0 auto;}

/* 资讯列表 */
.news-grid{display:grid;grid-template-columns:7fr 5fr;gap:24px;align-items:start;}
.news-lead{overflow:hidden;}
.news-lead .media{position:relative;overflow:hidden;background:var(--brand-50);}
.news-lead .media img{width:100%;aspect-ratio:16/9;transition:transform .3s ease;}
.news-lead:hover .media img{transform:scale(1.03);}
.news-lead .body{padding:26px;}
.news-card{display:flex;gap:16px;padding:16px;overflow:hidden;}
.news-card .thumb{position:relative;flex:0 0 132px;border-radius:10px;overflow:hidden;background:var(--brand-50);}
.news-card .thumb img{width:132px;height:88px;}
.news-card .info{min-width:0;display:flex;flex-direction:column;flex:1 1 auto;}
.news-card h3{font-size:16px;font-weight:600;line-height:1.5;color:var(--ink);}
.news-lead h3{font-size:21px;font-weight:600;line-height:1.5;color:var(--ink);margin-top:12px;}
.news-list{display:flex;flex-direction:column;gap:16px;}
.news-card:hover h3,.news-lead:hover h3{color:var(--brand-700);}
.news-sum{margin-top:8px;font-size:14px;color:var(--muted);}
.news-meta{margin-top:auto;padding-top:10px;display:flex;flex-wrap:wrap;gap:8px 14px;font-size:13px;color:var(--muted);align-items:center;}
.badge-cat{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  background:var(--brand-600);color:#fff;font-size:12px;font-weight:500;
}
.badge-soft{background:var(--brand-50);color:var(--brand-700);}
.thumb-ph{
  display:flex;align-items:center;justify-content:center;width:100%;height:100%;
  background:var(--brand-50);color:var(--brand-600);font-size:22px;min-height:88px;
}
.empty-state{
  min-height:240px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;
  background:var(--bg);border:1px dashed var(--line);border-radius:var(--r-card);color:var(--muted);font-size:15px;
}
.empty-state i{font-size:28px;color:var(--brand-100);}

/* 社会认同 */
.logo-wall{display:grid;grid-template-columns:repeat(6,1fr);gap:16px;margin-bottom:44px;}
.logo-cell{
  height:78px;border:1px solid var(--line);border-radius:12px;background:#fff;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;
  color:var(--muted);font-size:13px;filter:grayscale(1);opacity:.85;
  transition:filter .25s ease,opacity .25s ease,box-shadow .25s ease,transform .25s ease;
}
.logo-cell i{font-size:18px;color:var(--brand-600);}
.logo-cell:hover{filter:none;opacity:1;box-shadow:var(--sh-md);transform:translateY(-3px);}
.quote-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.quote-card{position:relative;padding:28px 26px 24px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-sm);}
.quote-card::before{content:"“";position:absolute;top:6px;right:22px;font-size:56px;line-height:1;color:var(--brand-100);font-family:system-ui,sans-serif;}
.quote-card p{font-size:15px;color:var(--body);}
.quote-user{margin-top:18px;display:flex;align-items:center;gap:12px;}
.quote-avatar{
  width:42px;height:42px;border-radius:50%;background:var(--brand-50);color:var(--brand-700);
  display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:600;flex:0 0 42px;
}
.quote-user strong{display:block;font-size:14px;color:var(--ink);font-weight:600;}
.quote-user span{font-size:13px;color:var(--muted);}

/* FAQ */
.faq-list{display:flex;flex-direction:column;gap:14px;max-width:920px;margin:0 auto;}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-sm);overflow:hidden;position:relative;}
.faq-item::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--brand-600);opacity:0;transition:opacity .2s ease;}
.faq-item[open]::before{opacity:1;}
.faq-item summary{
  list-style:none;display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;padding:16px 22px;font-size:16px;font-weight:600;color:var(--ink);cursor:pointer;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-icon{
  flex:0 0 26px;width:26px;height:26px;border-radius:50%;background:var(--brand-50);color:var(--brand-700);
  display:flex;align-items:center;justify-content:center;font-size:12px;transition:transform .2s ease,background-color .2s ease,color .2s ease;
}
.faq-item[open] .faq-icon{transform:rotate(180deg);background:var(--brand-600);color:#fff;}
.faq-body{padding:0 22px 20px;font-size:15px;color:var(--body);}

/* CTA 条 */
.cta-band{
  background:var(--brand-50);border:1px solid var(--brand-100);border-radius:var(--r-band);
  padding:48px 40px;display:flex;align-items:center;justify-content:space-between;gap:32px;
}
.cta-band h2{font-size:clamp(22px,2.6vw,28px);font-weight:600;color:var(--ink);line-height:1.4;}
.cta-band p{margin-top:10px;font-size:15px;color:var(--body);}

/* 页脚 */
.site-footer{background:var(--ink);color:#C7D2E1;padding:64px 0 0;margin-top:8px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px;}
.footer-brand .logo-text{color:#fff;font-size:17px;}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.8;color:#9FB0C6;max-width:30em;}
.footer-keywords{margin-top:12px;font-size:12px;color:#7A8CA5;letter-spacing:.04em;}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:12px;}
.footer-col a{font-size:14px;color:#9FB0C6;}
.footer-col a:hover{color:var(--accent-500);}
.footer-contact li{font-size:14px;color:#9FB0C6;display:flex;gap:10px;align-items:flex-start;}
.footer-contact i{color:var(--accent-500);margin-top:5px;}
.qr-box{
  margin-top:16px;width:96px;height:96px;border-radius:12px;background:#16233A;border:1px solid #26364F;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;color:#7A8CA5;font-size:11px;
}
.qr-box i{font-size:22px;color:#4A5F7C;}
.footer-bottom{
  border-top:1px solid #1E2C42;padding:20px 0;display:flex;flex-wrap:wrap;gap:12px 24px;
  align-items:center;justify-content:space-between;font-size:13px;color:#7A8CA5;
}
.footer-bottom a{color:#9FB0C6;}
.footer-bottom a:hover{color:var(--accent-500);}
.footer-links{display:flex;flex-wrap:wrap;gap:16px;}

/* 返回顶部 */
.to-top{
  position:fixed;right:24px;bottom:96px;width:44px;height:44px;border-radius:50%;
  background:#fff;border:1px solid var(--line);box-shadow:var(--sh-md);color:var(--brand-700);
  display:flex;align-items:center;justify-content:center;font-size:15px;
  opacity:0;visibility:hidden;transform:translateY(8px);transition:all .25s ease;z-index:45;
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:var(--brand-600);color:#fff;border-color:var(--brand-600);}

/* 底部转化条 */
.float-cta{
  position:fixed;right:24px;bottom:28px;z-index:46;width:326px;
  background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--sh-lg);
  padding:16px;display:flex;align-items:center;gap:14px;
  opacity:0;visibility:hidden;transform:translateY(10px);transition:all .25s ease;
}
.float-cta.show{opacity:1;visibility:visible;transform:translateY(0);}
.float-cta .txt{flex:1 1 auto;min-width:0;}
.float-cta strong{display:block;font-size:14px;font-weight:600;color:var(--ink);}
.float-cta span{font-size:12px;color:var(--muted);}
.float-cta .close-btn{width:26px;height:26px;border-radius:50%;background:var(--bg);color:var(--muted);font-size:11px;display:flex;align-items:center;justify-content:center;flex:0 0 26px;}
.float-cta .close-btn:hover{background:var(--brand-50);color:var(--brand-700);}

/* 响应式 */
@media (max-width:1023px){
  :root{--sec-y:68px;}
  .hero-grid{grid-template-columns:1fr;gap:32px;}
  .hero-media{order:-1;}
  .feature-grid{grid-template-columns:1fr;}
  .news-grid{grid-template-columns:1fr;}
  .logo-wall{grid-template-columns:repeat(3,1fr);}
  .quote-grid{grid-template-columns:1fr 1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:36px 28px;}
  .float-cta{width:300px;bottom:20px;right:20px;}
}
@media (max-width:767px){
  :root{--sec-y:52px;}
  .container{padding:0 16px;}
  .search-box{display:none;}
  .menu-toggle{display:flex;}
  .header-top .container{height:56px;}
  .logo-text{font-size:16px;}
  .hero{padding:36px 0 48px;}
  .hero-title{font-size:clamp(26px,7.5vw,32px);}
  .hero-sub{font-size:16px;}
  .hero-cta{flex-direction:column;}
  .hero-cta .btn{width:100%;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:28px;}
  .scene-row{grid-template-columns:1fr;gap:24px;}
  .scene-row.reverse .scene-media{order:0;}
  .scene-row + .scene-row{margin-top:40px;}
  .quote-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .logo-wall{grid-template-columns:repeat(2,1fr);}
  .news-card{flex-direction:column;}
  .news-card .thumb,.news-card .thumb img{width:100%;height:auto;flex:none;}
  .news-card .thumb img{aspect-ratio:16/9;}
  .float-cta{
    left:0;right:0;bottom:0;width:100%;border-radius:16px 16px 0 0;border-left:none;border-right:none;border-bottom:none;
    padding:10px 14px;gap:10px;
  }
  .float-cta span.hint{display:none;}
  .float-cta .btn{flex:1 1 auto;}
  .to-top{bottom:80px;right:16px;}
  body{padding-bottom:72px;}
}

/* roulang page: category1 */
:root{
    --brand-600:#1467C8;
    --brand-700:#0E4F9E;
    --brand-100:#D6E6FA;
    --brand-50:#EAF2FD;
    --accent-500:#FF7A29;
    --accent-600:#E8651A;
    --teal-500:#12A594;
    --ink:#0F1B2D;
    --body:#33445C;
    --muted:#6B7A90;
    --line:#E4E9F2;
    --bg:#F6F8FB;
    --white:#FFFFFF;
    --danger:#D64545;
    --radius-card:14px;
    --radius-block:20px;
    --radius-btn:10px;
    --radius-img:12px;
    --shadow-sm:0 1px 2px rgba(15,27,45,.06);
    --shadow-md:0 6px 18px rgba(15,27,45,.08);
    --shadow-lg:0 16px 40px rgba(15,27,45,.10);
    --font-cn:'PingFang SC','Hiragino Sans GB','Microsoft YaHei','Source Han Sans SC','Noto Sans SC',system-ui,-apple-system,sans-serif;
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;}
  body{
    margin:0;
    font-family:var(--font-cn);
    font-size:16px;
    line-height:1.8;
    color:var(--body);
    background:var(--white);
    letter-spacing:.01em;
  }
  img{max-width:100%;display:block;height:auto;}
  a{color:var(--brand-700);text-decoration:none;transition:color .2s ease,opacity .2s ease;}
  a:hover{color:var(--brand-600);}
  button{font-family:inherit;}
  h1,h2,h3,h4{margin:0;color:var(--ink);letter-spacing:.01em;font-weight:600;}
  h1{font-size:44px;line-height:1.25;font-weight:700;}
  h2{font-size:30px;line-height:1.35;}
  h3{font-size:21px;line-height:1.5;}
  p{margin:0;}
  ul{margin:0;padding:0;list-style:none;}
  .num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}
  :focus-visible{outline:2px solid rgba(20,103,200,.4);outline-offset:2px;border-radius:4px;}

  .container{max-width:1200px;margin:0 auto;padding:0 24px;width:100%;}
  .no-scrollbar{-ms-overflow-style:none;scrollbar-width:none;}
  .no-scrollbar::-webkit-scrollbar{display:none;}

  /* ---------- Header ---------- */
  .site-header{position:relative;z-index:40;background:var(--white);}
  .topbar{border-bottom:1px solid var(--line);}
  .topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:64px;}
  .logo{display:inline-flex;align-items:center;gap:10px;color:var(--ink);}
  .logo:hover{color:var(--ink);}
  .logo-mark{
    width:38px;height:38px;flex:0 0 38px;
    display:inline-flex;align-items:center;justify-content:center;
    background:var(--brand-600);color:#fff;
    font-size:15px;font-weight:700;letter-spacing:.02em;
    clip-path:polygon(25% 3%,75% 3%,100% 50%,75% 97%,25% 97%,0% 50%);
  }
  .logo-text{font-size:19px;font-weight:700;color:var(--ink);white-space:nowrap;}
  .search-box{
    display:flex;align-items:center;gap:10px;
    width:280px;height:40px;padding:0 16px;
    border:1px solid var(--line);border-radius:999px;background:var(--bg);
    color:var(--muted);font-size:14px;
    transition:border-color .2s ease,background .2s ease;
  }
  .search-box:focus-within{border-color:var(--brand-600);background:#fff;box-shadow:0 0 0 3px rgba(20,103,200,.10);}
  .search-box input{border:0;outline:none;background:transparent;font-size:14px;color:var(--body);width:100%;font-family:inherit;}
  .search-box input::placeholder{color:var(--muted);}
  .topbar-actions{display:flex;align-items:center;gap:12px;}
  .hamburger{
    display:none;width:42px;height:42px;border-radius:10px;
    border:1px solid var(--line);background:#fff;color:var(--ink);
    font-size:17px;cursor:pointer;transition:background .2s ease,border-color .2s ease;
  }
  .hamburger:hover{background:var(--brand-50);border-color:var(--brand-100);}

  /* ---------- Buttons ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:46px;padding:0 24px;border-radius:var(--radius-btn);
    font-size:15px;font-weight:600;cursor:pointer;
    border:1px solid transparent;text-decoration:none;white-space:nowrap;
    transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
  }
  .btn-primary{background:var(--accent-500);color:#fff;box-shadow:var(--shadow-sm);}
  .btn-primary:hover{background:var(--accent-600);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-md);}
  .btn-primary:active{transform:translateY(0);}
  .btn-ghost{background:#fff;border-color:var(--brand-600);color:var(--brand-700);}
  .btn-ghost:hover{background:var(--brand-50);border-color:var(--brand-700);color:var(--brand-700);}
  .btn-sm{height:40px;padding:0 18px;font-size:14px;}
  .btn:disabled{background:#CBD5E1;border-color:#CBD5E1;color:#fff;cursor:not-allowed;transform:none;box-shadow:none;}
  .link-more{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--brand-700);}
  .link-more i{transition:transform .2s ease;}
  .link-more:hover{text-decoration:underline;}
  .link-more:hover i{transform:translateX(3px);}

  /* ---------- Channel nav ---------- */
  .channel-nav{
    position:sticky;top:0;z-index:35;
    background:#fff;border-bottom:1px solid var(--line);
  }
  .channel-inner{
    display:flex;align-items:center;gap:8px;height:48px;
    overflow-x:auto;white-space:nowrap;
  }
  .pill{
    display:inline-flex;align-items:center;height:32px;padding:0 14px;
    border-radius:999px;font-size:14px;color:var(--body);
    background:transparent;transition:background .2s ease,color .2s ease,box-shadow .2s ease;
  }
  .pill:hover{background:var(--brand-50);color:var(--brand-700);}
  .pill.active{background:var(--brand-600);color:#fff;box-shadow:var(--shadow-sm);}
  .pill.active:hover{background:var(--brand-600);color:#fff;}

  /* ---------- Drawer ---------- */
  .drawer-mask{
    position:fixed;inset:0;background:rgba(15,27,45,.42);
    opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;z-index:55;
  }
  .drawer-mask.open{opacity:1;visibility:visible;}
  .drawer{
    position:fixed;top:0;right:0;height:100%;width:290px;max-width:86vw;
    background:#fff;z-index:60;transform:translateX(100%);
    transition:transform .3s ease;padding:22px;overflow-y:auto;
    box-shadow:var(--shadow-lg);
  }
  .drawer.open{transform:translateX(0);}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
  .drawer-close{width:38px;height:38px;border-radius:10px;border:1px solid var(--line);background:#fff;color:var(--ink);cursor:pointer;}
  .drawer-close:hover{background:var(--brand-50);}
  .drawer-list li + li{border-top:1px solid var(--line);}
  .drawer-list a{display:flex;align-items:center;justify-content:space-between;padding:14px 2px;font-size:15px;color:var(--body);}
  .drawer-list a:hover,.drawer-list a.active{color:var(--brand-700);font-weight:600;}
  .drawer-foot{margin-top:20px;padding-top:16px;border-top:1px solid var(--line);font-size:13px;color:var(--muted);line-height:1.9;}

  /* ---------- Hero ---------- */
  .page-hero{
    position:relative;overflow:hidden;
    background:var(--brand-50);
    padding:44px 0 60px;
    min-height:320px;
    display:flex;align-items:center;
  }
  .page-hero-bg{
    position:absolute;inset:0;
    background-size:cover;background-position:center;
    opacity:.30;
  }
  .page-hero::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(90deg,rgba(234,242,253,.96) 0%,rgba(234,242,253,.86) 48%,rgba(234,242,253,.62) 100%);
  }
  .page-hero-inner{position:relative;z-index:2;max-width:820px;}
  .breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:20px;flex-wrap:wrap;}
  .breadcrumb a{color:var(--muted);}
  .breadcrumb a:hover{color:var(--brand-600);text-decoration:underline;}
  .breadcrumb .sep{color:#B9C4D4;}
  .breadcrumb .current{color:var(--body);max-width:320px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    height:28px;padding:0 14px;margin-bottom:16px;
    border-radius:999px;background:#fff;border:1px solid var(--brand-100);
    color:var(--brand-700);font-size:13px;font-weight:600;letter-spacing:.02em;
  }
  .eyebrow::before{content:"";width:6px;height:6px;background:var(--accent-500);border-radius:2px;}
  .page-hero h1{font-size:40px;margin-bottom:14px;}
  .page-hero .hero-sub{font-size:18px;line-height:1.8;color:var(--body);max-width:640px;}

  /* ---------- Sections ---------- */
  .section{padding:88px 0;}
  .section-tight{padding:64px 0;}
  .bg-soft{background:var(--bg);}
  .sec-head{margin-bottom:44px;max-width:760px;}
  .sec-head h2{margin-bottom:14px;}
  .sec-head p{font-size:16px;color:var(--body);}
  .sec-head.center{margin-left:auto;margin-right:auto;text-align:center;}

  .grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:56px;align-items:center;}
  .grid-2.reverse .media{order:2;}

  .media{border-radius:var(--radius-img);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-sm);background:var(--brand-50);}
  .media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .35s ease;}
  .media:hover img{transform:scale(1.03);}
  .media-fallback{display:flex;align-items:center;justify-content:center;aspect-ratio:16/10;color:var(--brand-600);font-size:32px;}

  .check-list{margin-top:22px;display:grid;gap:12px;}
  .check-list li{position:relative;padding-left:26px;font-size:15px;line-height:1.75;color:var(--body);}
  .check-list li::before{
    content:"";position:absolute;left:0;top:8px;width:14px;height:14px;border-radius:4px;
    background:var(--brand-50);border:1px solid var(--brand-100);
  }
  .check-list li::after{
    content:"";position:absolute;left:4px;top:12px;width:6px;height:6px;border-radius:2px;background:var(--teal-500);
  }

  .num-badge{
    display:inline-flex;align-items:center;justify-content:center;
    font-size:30px;font-weight:700;color:var(--brand-100);line-height:1;
    font-variant-numeric:tabular-nums;letter-spacing:.02em;
  }

  /* ---------- Table ---------- */
  .table-wrap{
    margin-top:34px;overflow-x:auto;
    border:1px solid var(--line);border-radius:var(--radius-card);
    background:#fff;box-shadow:var(--shadow-sm);
  }
  table.data{width:100%;min-width:660px;border-collapse:collapse;font-size:15px;}
  table.data caption{
    text-align:left;padding:18px 20px 0;font-size:15px;font-weight:600;color:var(--ink);
  }
  table.data th{
    background:var(--brand-50);color:var(--ink);font-weight:600;font-size:14px;
    text-align:left;padding:14px 20px;border-bottom:1px solid var(--line);white-space:nowrap;
  }
  table.data td{padding:14px 20px;border-bottom:1px solid var(--line);color:var(--body);vertical-align:top;font-variant-numeric:tabular-nums;}
  table.data tbody tr:last-child td{border-bottom:0;}
  table.data tbody tr:nth-child(even){background:#FBFCFE;}
  table.data td:first-child{color:var(--ink);font-weight:500;white-space:nowrap;}
  .tag{
    display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
    font-size:12px;font-weight:600;background:var(--brand-50);color:var(--brand-700);border:1px solid var(--brand-100);
  }
  .tag-accent{background:rgba(255,122,41,.10);color:var(--accent-600);border-color:rgba(255,122,41,.24);}
  .tag-teal{background:rgba(18,165,148,.10);color:#0E8477;border-color:rgba(18,165,148,.22);}

  /* ---------- Info cards ---------- */
  .card{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
    padding:28px;box-shadow:var(--shadow-sm);
    transition:transform .2s ease,box-shadow .2s ease;
  }
  .card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);}
  .card h3{margin-bottom:10px;font-size:19px;}
  .card p{font-size:15px;line-height:1.75;color:var(--body);}
  .card .num-badge{margin-bottom:12px;}
  .card-soft{background:var(--bg);}
  .grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;}
  .grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}

  .icon-box{
    width:44px;height:44px;border-radius:12px;background:var(--brand-50);color:var(--brand-600);
    display:inline-flex;align-items:center;justify-content:center;font-size:18px;margin-bottom:16px;
  }

  /* ---------- FAQ ---------- */
  .faq-list{display:grid;gap:14px;max-width:920px;}
  .faq-item{
    position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
    box-shadow:var(--shadow-sm);overflow:hidden;transition:box-shadow .2s ease;
  }
  .faq-item:hover{box-shadow:var(--shadow-md);}
  .faq-item::before{
    content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--brand-600);
    opacity:0;transition:opacity .2s ease;
  }
  .faq-item[open]::before{opacity:1;}
  .faq-item summary{
    list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:18px 24px;min-height:56px;font-size:16px;font-weight:600;color:var(--ink);
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-ico{
    flex:0 0 auto;width:28px;height:28px;border-radius:999px;background:var(--brand-50);color:var(--brand-600);
    display:inline-flex;align-items:center;justify-content:center;font-size:12px;
    transition:transform .2s ease,background .2s ease,color .2s ease;
  }
  .faq-item[open] .faq-ico{transform:rotate(45deg);background:var(--brand-600);color:#fff;}
  .faq-a{padding:0 24px 22px;font-size:15px;line-height:1.85;color:var(--body);max-width:800px;}

  /* ---------- CTA ---------- */
  .cta-band{
    background:var(--brand-50);border-radius:var(--radius-block);
    padding:48px 40px;display:flex;align-items:center;justify-content:space-between;gap:32px;
    border:1px solid var(--brand-100);
  }
  .cta-band h2{font-size:26px;margin-bottom:10px;}
  .cta-band p{font-size:15px;color:var(--body);max-width:620px;}
  .cta-actions{display:flex;gap:12px;flex:0 0 auto;}

  /* ---------- Footer ---------- */
  .site-footer{background:#0F1B2D;color:#C7D2E0;padding:64px 0 0;margin-top:0;}
  .footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px;}
  .site-footer .logo-text{color:#fff;}
  .site-footer .logo-mark{background:var(--brand-600);}
  .footer-brand p{font-size:14px;line-height:1.85;color:#98A8BD;margin-top:16px;max-width:320px;}
  .footer-keywords{font-size:12.5px;color:#7C8DA3 !important;letter-spacing:.02em;}
  .footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:600;}
  .footer-col ul{display:grid;gap:12px;}
  .footer-col a{color:#C7D2E0;font-size:14px;}
  .footer-col a:hover{color:var(--accent-500);}
  .footer-contact li{display:flex;align-items:center;gap:10px;font-size:14px;color:#C7D2E0;}
  .footer-contact i{color:var(--accent-500);width:16px;}
  .qr-box{
    margin-top:18px;width:96px;height:96px;border-radius:12px;
    background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
    display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;
    color:#98A8BD;font-size:11px;
  }
  .qr-box i{font-size:26px;color:#C7D2E0;}
  .footer-bottom{
    border-top:1px solid rgba(255,255,255,.10);
    padding:20px 0 26px;display:flex;align-items:center;justify-content:space-between;gap:18px;
    font-size:13px;color:#8A9AB0;flex-wrap:wrap;
  }
  .footer-links{display:flex;gap:16px;flex-wrap:wrap;}
  .footer-links a{color:#8A9AB0;font-size:13px;}
  .footer-links a:hover{color:var(--accent-500);}

  /* ---------- Back to top ---------- */
  #toTop{
    position:fixed;right:24px;bottom:28px;width:44px;height:44px;border-radius:999px;
    background:#fff;border:1px solid var(--line);color:var(--brand-700);
    box-shadow:var(--shadow-md);cursor:pointer;font-size:15px;
    display:flex;align-items:center;justify-content:center;
    opacity:0;visibility:hidden;transform:translateY(8px);
    transition:opacity .25s ease,transform .25s ease,visibility .25s ease,background .2s ease;z-index:45;
  }
  #toTop.show{opacity:1;visibility:visible;transform:translateY(0);}
  #toTop:hover{background:var(--brand-50);}

  /* ---------- Responsive ---------- */
  @media (max-width:1023px){
    h1{font-size:34px;}
    .page-hero h1{font-size:34px;}
    h2{font-size:26px;}
    .section{padding:64px 0;}
    .section-tight{padding:52px 0;}
    .grid-2{gap:36px;}
    .grid-4{grid-template-columns:repeat(2,minmax(0,1fr));}
    .grid-3{grid-template-columns:repeat(2,minmax(0,1fr));}
    .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px;}
    .search-box{width:220px;}
  }
  @media (max-width:767px){
    body{font-size:16px;}
    .container{padding:0 16px;}
    .topbar-inner{height:56px;gap:12px;}
    .logo-text{font-size:17px;}
    .logo-mark{width:34px;height:34px;flex:0 0 34px;font-size:13px;}
    .search-box{display:none;}
    .hamburger{display:inline-flex;align-items:center;justify-content:center;}
    .topbar-actions .btn-sm{display:none;}
    .channel-inner{height:46px;gap:8px;padding-bottom:2px;}
    .page-hero{padding:32px 0 44px;min-height:280px;}
    .page-hero h1{font-size:28px;}
    .page-hero .hero-sub{font-size:16px;}
    .breadcrumb .current{max-width:200px;}
    h2{font-size:23px;}
    .section{padding:48px 0;}
    .section-tight{padding:44px 0;}
    .grid-2{grid-template-columns:1fr;gap:28px;}
    .grid-2.reverse .media{order:0;}
    .grid-4,.grid-3{grid-template-columns:1fr;gap:16px;}
    .sec-head{margin-bottom:28px;}
    .cta-band{flex-direction:column;align-items:flex-start;padding:28px 20px;gap:20px;}
    .cta-actions{width:100%;flex-direction:column;}
    .cta-actions .btn{width:100%;}
    .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px;}
    .footer-bottom{flex-direction:column;align-items:flex-start;gap:12px;}
    #toTop{right:16px;bottom:18px;}
    .card{padding:22px;}
    .btn{height:46px;}
  }
  @media (max-width:519px){
    .page-hero h1{font-size:26px;}
    h2{font-size:22px;}
    .faq-item summary{padding:16px 18px;font-size:15px;}
    .faq-a{padding:0 18px 18px;}
  }

/* roulang page: category2 */
:root{
    --brand-600:#1467C8;
    --brand-700:#0E4F9E;
    --brand-100:#D6E6FA;
    --brand-50:#EAF2FD;
    --accent-500:#FF7A29;
    --accent-600:#E8651A;
    --teal-500:#12A594;
    --ink:#0F1B2D;
    --body:#33445C;
    --muted:#6B7A90;
    --line:#E4E9F2;
    --bg:#F6F8FB;
    --white:#FFFFFF;
    --r-card:14px;
    --r-block:20px;
    --r-btn:10px;
    --r-img:12px;
    --sh-sm:0 1px 2px rgba(15,27,45,.06);
    --sh-md:0 6px 18px rgba(15,27,45,.08);
    --sh-lg:0 16px 40px rgba(15,27,45,.10);
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    font-family:'PingFang SC','Hiragino Sans GB','Microsoft YaHei','Source Han Sans SC','Noto Sans SC',system-ui,-apple-system,sans-serif;
    font-size:16px;
    line-height:1.8;
    color:var(--body);
    background:var(--white);
    -webkit-font-smoothing:antialiased;
  }
  h1,h2,h3,h4{margin:0;color:var(--ink);letter-spacing:.01em;font-weight:700;}
  h1{font-size:44px;line-height:1.25;}
  h2{font-size:30px;line-height:1.35;font-weight:600;}
  h3{font-size:21px;line-height:1.5;font-weight:600;}
  p{margin:0;}
  a{color:var(--brand-700);text-decoration:none;transition:color .2s ease;}
  a:hover{color:var(--accent-600);}
  img{max-width:100%;display:block;}
  ul{margin:0;padding:0;list-style:none;}
  button{font-family:inherit;}
  a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible{
    outline:2px solid rgba(20,103,200,.45);
    outline-offset:2px;
    border-radius:6px;
  }
  .container{max-width:1200px;margin:0 auto;padding:0 24px;}
  .no-scrollbar{-ms-overflow-style:none;scrollbar-width:none;}
  .no-scrollbar::-webkit-scrollbar{display:none;}
  .line-clamp-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
  .line-clamp-3{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
  .tnum{font-variant-numeric:tabular-nums;font-family:system-ui,-apple-system,sans-serif;}

  /* ---------- 顶部品牌行 ---------- */
  .site-header{
    background:var(--white);
    border-bottom:1px solid var(--line);
    position:relative;
    z-index:40;
  }
  .header-inner{
    height:64px;
    display:flex;
    align-items:center;
    gap:20px;
  }
  .logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
  .logo-mark{
    width:36px;height:36px;
    display:flex;align-items:center;justify-content:center;
    background:var(--brand-600);
    color:#fff;
    font-weight:700;
    font-size:15px;
    border-radius:11px;
    letter-spacing:0;
    box-shadow:var(--sh-sm);
  }
  .logo-text{font-size:19px;font-weight:700;color:var(--ink);letter-spacing:.01em;}
  .header-search{
    flex:1 1 auto;
    display:flex;
    justify-content:center;
  }
  .search-pill{
    width:100%;
    max-width:290px;
    height:40px;
    display:flex;
    align-items:center;
    gap:8px;
    padding:0 16px;
    border:1px solid var(--line);
    border-radius:999px;
    background:var(--bg);
    color:var(--muted);
    font-size:14px;
    transition:border-color .2s ease,background .2s ease;
  }
  .search-pill:hover{border-color:var(--brand-100);background:#fff;}
  .search-pill input{
    border:0;background:transparent;outline:none;width:100%;font-size:14px;color:var(--body);
  }
  .search-pill input::placeholder{color:var(--muted);}
  .header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:46px;padding:0 24px;border-radius:var(--r-btn);
    font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
    transition:background .2s ease,color .2s ease,box-shadow .2s ease,transform .2s ease,border-color .2s ease;
  }
  .btn-primary{background:var(--accent-500);color:#fff;box-shadow:var(--sh-sm);}
  .btn-primary:hover{background:var(--accent-600);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-md);}
  .btn-primary:active{transform:translateY(1px);}
  .btn-ghost{background:#fff;color:var(--brand-700);border-color:var(--brand-600);}
  .btn-ghost:hover{background:var(--brand-50);color:var(--brand-700);border-color:var(--brand-700);}
  .btn-sm{height:40px;padding:0 18px;font-size:14px;}
  .hamburger{
    width:42px;height:42px;border-radius:var(--r-btn);
    border:1px solid var(--line);background:#fff;color:var(--ink);
    display:none;align-items:center;justify-content:center;font-size:17px;cursor:pointer;
  }
  .hamburger:hover{border-color:var(--brand-100);color:var(--brand-700);}

  /* ---------- 频道 Tabs ---------- */
  .channel-nav{
    position:sticky;
    top:0;
    z-index:30;
    background:#fff;
    border-bottom:1px solid var(--line);
  }
  .channel-inner{
    height:48px;
    display:flex;
    align-items:center;
    gap:8px;
    overflow-x:auto;
    white-space:nowrap;
  }
  .pill{
    display:inline-flex;align-items:center;
    height:32px;padding:0 14px;border-radius:999px;
    font-size:14px;color:#3C4A60;background:transparent;
    transition:background .2s ease,color .2s ease,box-shadow .2s ease;
  }
  .pill:hover{background:var(--brand-50);color:var(--brand-700);}
  .pill.active{background:var(--brand-600);color:#fff;box-shadow:var(--sh-sm);}
  .pill.active:hover{background:var(--brand-700);color:#fff;}

  /* ---------- 通用板块 ---------- */
  .section{padding:88px 0;}
  .section-alt{background:var(--bg);}
  .section-head{max-width:760px;margin-bottom:44px;}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:13px;font-weight:600;color:var(--brand-700);
    background:var(--brand-50);border:1px solid var(--brand-100);
    padding:5px 12px;border-radius:999px;margin-bottom:16px;
  }
  .section-head p{margin-top:14px;color:var(--body);font-size:16px;line-height:1.8;}
  .divider{height:1px;background:var(--line);border:0;margin:0;}

  /* ---------- 内页 Hero ---------- */
  .page-hero{
    position:relative;
    background-image:url('/assets/images/backpic/back-2.png');
    background-size:cover;
    background-position:center;
    padding:56px 0 64px;
    border-bottom:1px solid var(--line);
  }
  .page-hero::before{
    content:"";
    position:absolute;inset:0;
    background:rgba(246,248,251,.90);
  }
  .page-hero .container{position:relative;z-index:1;}
  .breadcrumb{
    display:flex;align-items:center;gap:8px;flex-wrap:wrap;
    font-size:13px;color:var(--muted);margin-bottom:22px;
  }
  .breadcrumb a{color:var(--muted);}
  .breadcrumb a:hover{color:var(--brand-700);text-decoration:underline;}
  .breadcrumb .sep{color:#C3CCDA;}
  .breadcrumb .cur{color:var(--brand-700);max-width:280px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
  .hero-title{max-width:820px;}
  .hero-title h1{font-size:42px;}
  .hero-sub{margin-top:16px;font-size:18px;line-height:1.75;color:var(--body);max-width:720px;}
  .hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
  .tag{
    display:inline-flex;align-items:center;gap:7px;
    height:32px;padding:0 14px;border-radius:999px;
    background:#fff;border:1px solid var(--line);
    font-size:13px;color:#3C4A60;
  }
  .tag i{color:var(--teal-500);font-size:12px;}

  /* ---------- 时间线 ---------- */
  .timeline{position:relative;padding-left:88px;}
  .timeline::before{
    content:"";position:absolute;left:31px;top:12px;bottom:12px;
    width:2px;background:var(--line);
  }
  .tl-item{position:relative;padding-bottom:36px;}
  .tl-item:last-child{padding-bottom:0;}
  .tl-num{
    position:absolute;left:-88px;top:0;
    width:64px;height:64px;border-radius:16px;
    background:#fff;border:1px solid var(--line);box-shadow:var(--sh-sm);
    display:flex;align-items:center;justify-content:center;
    font-size:24px;font-weight:700;color:var(--brand-600);
    font-variant-numeric:tabular-nums;font-family:system-ui,-apple-system,sans-serif;
  }
  .tl-card{
    background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
    padding:26px 28px;box-shadow:var(--sh-sm);
    transition:box-shadow .2s ease,transform .2s ease,border-color .2s ease;
  }
  .tl-card:hover{transform:translateY(-3px);box-shadow:var(--sh-md);border-color:var(--brand-100);}
  .tl-card h3{margin-bottom:10px;}
  .tl-card p{font-size:15px;line-height:1.8;color:var(--body);}
  .tl-meta{
    display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;
  }
  .tl-chip{
    font-size:13px;color:var(--brand-700);background:var(--brand-50);
    border-radius:999px;padding:4px 12px;
  }

  /* ---------- 图文交替 ---------- */
  .media-row{
    display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;
  }
  .media-row + .media-row{margin-top:72px;}
  .media-row.reverse .media-text{order:2;}
  .media-row.reverse .media-pic{order:1;}
  .media-pic{border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh-sm);}
  .media-pic img{width:100%;height:auto;aspect-ratio:16/10;object-fit:cover;transition:transform .3s ease;}
  .media-pic:hover img{transform:scale(1.03);}
  .media-text h3{margin-bottom:14px;font-size:22px;}
  .media-text p{font-size:15.5px;line-height:1.85;color:var(--body);}
  .check-list{margin-top:18px;display:flex;flex-direction:column;gap:11px;}
  .check-list li{display:flex;gap:11px;font-size:15px;color:var(--body);line-height:1.75;}
  .check-list li i{color:var(--teal-500);font-size:14px;margin-top:5px;flex:0 0 auto;}

  /* ---------- 清单卡片 ---------- */
  .grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
  .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
  .card{
    background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
    padding:26px;box-shadow:var(--sh-sm);
    transition:box-shadow .2s ease,transform .2s ease,border-color .2s ease;
  }
  .card:hover{transform:translateY(-3px);box-shadow:var(--sh-md);border-color:var(--brand-100);}
  .card-icon{
    width:44px;height:44px;border-radius:12px;background:var(--brand-50);color:var(--brand-600);
    display:flex;align-items:center;justify-content:center;font-size:18px;margin-bottom:16px;
  }
  .card h3{margin-bottom:10px;font-size:19px;}
  .card p{font-size:15px;line-height:1.78;color:var(--body);}
  .card-list{margin-top:14px;display:flex;flex-direction:column;gap:9px;}
  .card-list li{font-size:14.5px;color:var(--body);display:flex;gap:9px;line-height:1.7;}
  .card-list li::before{
    content:"";width:6px;height:6px;border-radius:2px;background:var(--brand-600);
    margin-top:10px;flex:0 0 auto;
  }

  /* ---------- 提示条 ---------- */
  .notice{
    display:flex;gap:16px;align-items:flex-start;
    background:var(--brand-50);border:1px solid var(--brand-100);
    border-radius:var(--r-card);padding:22px 24px;margin-top:36px;
  }
  .notice i{color:var(--brand-600);font-size:18px;margin-top:4px;}
  .notice strong{display:block;color:var(--ink);font-size:16px;margin-bottom:6px;}
  .notice p{font-size:15px;color:var(--body);line-height:1.78;}

  /* ---------- FAQ ---------- */
  .faq-list{display:flex;flex-direction:column;gap:14px;}
  .faq-item{
    background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
    box-shadow:var(--sh-sm);overflow:hidden;position:relative;
    transition:border-color .2s ease,box-shadow .2s ease;
  }
  .faq-item::before{
    content:"";position:absolute;left:0;top:0;bottom:0;width:3px;
    background:var(--brand-600);opacity:0;transition:opacity .2s ease;
  }
  .faq-item[open]::before{opacity:1;}
  .faq-item[open]{box-shadow:var(--sh-md);border-color:var(--brand-100);}
  .faq-item summary{
    list-style:none;cursor:pointer;
    min-height:56px;padding:18px 56px 18px 26px;
    display:flex;align-items:center;
    font-size:16.5px;font-weight:600;color:var(--ink);
    position:relative;
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary::after{
    content:"+";
    position:absolute;right:24px;top:50%;transform:translateY(-50%);
    font-size:22px;font-weight:400;color:var(--brand-600);
    transition:transform .2s ease;
    font-family:system-ui,-apple-system,sans-serif;line-height:1;
  }
  .faq-item[open] summary::after{content:"−";transform:translateY(-50%) rotate(180deg);}
  .faq-body{padding:0 26px 22px;font-size:15px;line-height:1.85;color:var(--body);}

  /* ---------- CTA 条 ---------- */
  .cta-band{
    background:var(--brand-50);
    border:1px solid var(--brand-100);
    border-radius:var(--r-block);
    padding:48px 40px;
    display:flex;align-items:center;justify-content:space-between;gap:32px;
  }
  .cta-band h2{font-size:26px;margin-bottom:10px;}
  .cta-band p{font-size:15.5px;color:var(--body);max-width:640px;}
  .cta-actions{display:flex;gap:14px;flex:0 0 auto;flex-wrap:wrap;}

  /* ---------- 页脚 ---------- */
  .site-footer{background:var(--ink);color:#C8D2E0;padding:64px 0 0;font-size:14.5px;}
  .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:40px;padding-bottom:44px;}
  .footer-brand .logo-text{color:#fff;}
  .footer-brand .logo-mark{background:var(--brand-600);}
  .footer-brand p{margin-top:16px;font-size:14px;line-height:1.8;color:#9FB0C6;max-width:320px;}
  .footer-keywords{margin-top:14px;font-size:13px;color:#7E90A8;}
  .footer-col h4{color:#fff;font-size:15px;margin-bottom:18px;font-weight:600;letter-spacing:.01em;}
  .footer-col ul{display:flex;flex-direction:column;gap:12px;}
  .footer-col a{color:#C8D2E0;font-size:14px;}
  .footer-col a:hover{color:var(--accent-500);}
  .footer-contact li{display:flex;align-items:center;gap:9px;color:#C8D2E0;font-size:14px;}
  .footer-contact i{color:var(--brand-100);font-size:13px;}
  .qr-box{
    width:96px;height:96px;margin-top:18px;border-radius:12px;
    border:1px dashed #35486A;background:#16233A;
    display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;
    color:#8B9CB4;font-size:12px;
  }
  .qr-box i{font-size:24px;color:#5F7799;}
  .footer-bottom{
    border-top:1px solid #22314A;
    padding:22px 0 26px;
    display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
    font-size:13.5px;color:#8B9CB4;
  }
  .footer-links{display:flex;gap:18px;flex-wrap:wrap;align-items:center;}
  .footer-links a{color:#8B9CB4;}
  .footer-links a:hover{color:var(--accent-500);}

  /* ---------- 返回顶部 ---------- */
  #toTop{
    position:fixed;right:24px;bottom:28px;width:44px;height:44px;border-radius:50%;
    background:#fff;border:1px solid var(--line);box-shadow:var(--sh-md);
    color:var(--brand-700);display:flex;align-items:center;justify-content:center;
    font-size:15px;cursor:pointer;opacity:0;visibility:hidden;transform:translateY(8px);
    transition:opacity .25s ease,transform .25s ease,visibility .25s ease;
    z-index:50;
  }
  #toTop.show{opacity:1;visibility:visible;transform:translateY(0);}
  #toTop:hover{color:var(--accent-600);}

  /* ---------- 移动端抽屉 ---------- */
  .drawer{
    position:fixed;inset:0;background:rgba(15,27,45,.45);
    opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;z-index:60;
  }
  .drawer.open{opacity:1;visibility:visible;}
  .drawer-panel{
    position:absolute;top:0;right:0;width:280px;height:100%;background:#fff;
    padding:24px;transform:translateX(100%);transition:transform .28s ease;
    display:flex;flex-direction:column;gap:6px;
  }
  .drawer.open .drawer-panel{transform:translateX(0);}
  .drawer-panel h4{font-size:14px;color:var(--muted);font-weight:600;margin:8px 0 10px;}
  .drawer-panel a{
    display:block;padding:12px 14px;border-radius:10px;color:var(--ink);font-size:15px;
    background:var(--bg);
  }
  .drawer-panel a.active{background:var(--brand-600);color:#fff;}
  .drawer-panel a:hover{background:var(--brand-50);color:var(--brand-700);}
  .drawer-close{
    align-self:flex-end;width:38px;height:38px;border-radius:10px;border:1px solid var(--line);
    background:#fff;color:var(--ink);cursor:pointer;font-size:16px;
  }

  /* ---------- 响应式 ---------- */
  @media (max-width:1023px){
    h1{font-size:34px;}
    .hero-title h1{font-size:34px;}
    h2{font-size:26px;}
    .section{padding:64px 0;}
    .header-search{display:none;}
    .media-row{gap:32px;}
    .grid-3{grid-template-columns:repeat(2,1fr);}
    .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px;}
    .cta-band{flex-direction:column;align-items:flex-start;}
    .cta-actions{width:100%;}
  }
  @media (max-width:767px){
    body{font-size:15.5px;}
    .container{padding:0 16px;}
    .header-inner{height:56px;gap:12px;}
    .logo-text{font-size:17px;}
    .logo-mark{width:32px;height:32px;font-size:13px;border-radius:9px;}
    .header-actions .btn-primary{display:none;}
    .hamburger{display:flex;}
    .channel-nav .container{padding:0 16px;}
    .page-hero{padding:36px 0 44px;}
    h1{font-size:29px;}
    .hero-title h1{font-size:29px;}
    .hero-sub{font-size:16.5px;}
    h2{font-size:23px;}
    .section{padding:52px 0;}
    .section-head{margin-bottom:32px;}
    .media-row{grid-template-columns:1fr;}
    .media-row.reverse .media-text{order:1;}
    .media-row.reverse .media-pic{order:2;}
    .media-row + .media-row{margin-top:48px;}
    .grid-2,.grid-3{grid-template-columns:1fr;}
    .timeline{padding-left:0;}
    .timeline::before{left:19px;}
    .tl-item{padding-left:56px;padding-bottom:28px;}
    .tl-num{position:absolute;left:0;top:0;width:40px;height:40px;border-radius:12px;font-size:17px;}
    .tl-card{padding:20px;}
    .ca-band{}
    .cta-band{padding:28px 20px;border-radius:16px;}
    .cta-band h2{font-size:21px;}
    .cta-actions .btn{width:100%;}
    .footer-grid{grid-template-columns:1fr;gap:28px;}
    .footer-bottom{flex-direction:column;align-items:flex-start;}
    .faq-item summary{padding:16px 48px 16px 20px;font-size:15.5px;}
    .faq-body{padding:0 20px 20px;}
    #toTop{right:16px;bottom:20px;}
    .site-main{padding-bottom:16px;}
  }

/* roulang page: article */
:root{
    --brand-600:#1467C8;
    --brand-700:#0E4F9E;
    --brand-100:#D6E6FA;
    --brand-50:#EAF2FD;
    --accent-500:#FF7A29;
    --accent-600:#E8651A;
    --teal-500:#12A594;
    --ink:#0F1B2D;
    --body:#33445C;
    --muted:#6B7A90;
    --line:#E4E9F2;
    --bg:#F6F8FB;
    --white:#FFFFFF;
    --danger:#D64545;
    --radius-card:14px;
    --radius-block:20px;
    --radius-btn:10px;
    --radius-img:12px;
    --shadow-sm:0 1px 2px rgba(15,27,45,.06);
    --shadow-md:0 6px 18px rgba(15,27,45,.08);
    --shadow-lg:0 16px 40px rgba(15,27,45,.10);
    --font:'PingFang SC','Hiragino Sans GB','Microsoft YaHei','Source Han Sans SC','Noto Sans SC',system-ui,-apple-system,sans-serif;
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    font-family:var(--font);
    font-size:16px;
    line-height:1.8;
    color:var(--body);
    background:var(--white);
    letter-spacing:.01em;
    overflow-x:hidden;
  }
  img{max-width:100%;display:block;height:auto;}
  a{color:var(--brand-700);text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease;}
  a:hover{color:var(--brand-600);}
  button{font-family:inherit;}
  ul,ol{margin:0;padding:0;list-style:none;}
  h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:600;letter-spacing:.01em;}
  p{margin:0;}
  :focus-visible{outline:2px solid rgba(20,103,200,.4);outline-offset:2px;}

  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
  .no-scrollbar{scrollbar-width:none;-ms-overflow-style:none;}
  .no-scrollbar::-webkit-scrollbar{display:none;}
  .tabular{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}
  .line-clamp-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
  .line-clamp-3{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}

  /* ---------- Header ---------- */
  .site-header{position:relative;background:var(--white);}
  .topbar{border-bottom:1px solid var(--line);background:var(--white);}
  .topbar-inner{display:flex;align-items:center;gap:24px;height:64px;}
  .logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
  .logo-mark{
    width:34px;height:34px;display:inline-flex;align-items:center;justify-content:center;
    background:var(--brand-600);color:#fff;font-size:13px;font-weight:700;letter-spacing:.02em;
    clip-path:polygon(25% 0%,75% 0%,100% 50%,75% 100%,25% 100%,0% 50%);
  }
  .logo-text{font-size:18px;font-weight:700;color:var(--ink);letter-spacing:.01em;}
  .search-box{
    flex:1 1 auto;max-width:290px;display:flex;align-items:center;gap:10px;
    height:40px;padding:0 16px;border:1px solid var(--line);border-radius:999px;
    background:var(--bg);transition:border-color .2s ease,background-color .2s ease,box-shadow .2s ease;
  }
  .search-box i{color:var(--muted);font-size:14px;}
  .search-box input{
    border:0;background:transparent;outline:none;width:100%;font-size:14px;color:var(--body);
    font-family:inherit;
  }
  .search-box input::placeholder{color:var(--muted);}
  .search-box:focus-within{border-color:var(--brand-600);background:#fff;box-shadow:0 0 0 3px rgba(20,103,200,.12);}
  .topbar-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}

  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:46px;padding:0 24px;border-radius:var(--radius-btn);
    font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
    transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease,color .2s ease,border-color .2s ease;
    white-space:nowrap;
  }
  .btn-primary{background:var(--accent-500);color:#fff;box-shadow:var(--shadow-sm);}
  .btn-primary:hover{background:var(--accent-600);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-md);}
  .btn-primary:active{transform:translateY(1px);box-shadow:var(--shadow-sm);}
  .btn-ghost{background:#fff;color:var(--brand-700);border-color:var(--brand-600);}
  .btn-ghost:hover{background:var(--brand-50);border-color:var(--brand-700);color:var(--brand-700);}
  .btn-sm{height:38px;padding:0 18px;font-size:14px;}
  .btn-block{width:100%;}
  .btn[disabled]{background:#CBD5E1;color:#fff;cursor:not-allowed;box-shadow:none;transform:none;border-color:#CBD5E1;}

  .hamburger{
    display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:10px;
    background:#fff;cursor:pointer;padding:0;align-items:center;justify-content:center;flex-direction:column;gap:4px;
  }
  .hamburger span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform .2s ease,opacity .2s ease;}
  .hamburger[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
  .hamburger[aria-expanded="true"] span:nth-child(2){opacity:0;}
  .hamburger[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

  .channel-nav{
    position:sticky;top:0;z-index:40;background:#fff;
    border-bottom:1px solid var(--line);box-shadow:var(--shadow-sm);
  }
  .channel-inner{display:flex;align-items:center;gap:8px;height:48px;overflow-x:auto;white-space:nowrap;}
  .pill{
    display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:999px;
    font-size:14px;color:var(--body);background:transparent;transition:background-color .2s ease,color .2s ease;
  }
  .pill:hover{background:var(--brand-50);color:var(--brand-700);}
  .pill.active{background:var(--brand-600);color:#fff;box-shadow:var(--shadow-sm);}
  .pill.active:hover{background:var(--brand-700);color:#fff;}

  .mobile-drawer{
    position:fixed;inset:64px 0 auto 0;z-index:50;background:#fff;border-bottom:1px solid var(--line);
    padding:16px 24px 24px;box-shadow:var(--shadow-md);display:none;
  }
  .mobile-drawer.open{display:block;}
  .mobile-drawer a{
    display:flex;align-items:center;justify-content:space-between;padding:12px 0;
    border-bottom:1px solid var(--line);color:var(--ink);font-size:15px;
  }
  .mobile-drawer a:last-child{border-bottom:0;}

  /* ---------- Breadcrumb ---------- */
  .crumb-bar{background:var(--bg);border-bottom:1px solid var(--line);}
  .crumb{
    display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);
    padding:14px 0;overflow:hidden;white-space:nowrap;
  }
  .crumb a{color:var(--muted);}
  .crumb a:hover{color:var(--brand-600);text-decoration:underline;}
  .crumb .sep{color:#C2CBD9;}
  .crumb .current{color:var(--body);overflow:hidden;text-overflow:ellipsis;max-width:60%;}

  /* ---------- Article head ---------- */
  .article-top{padding:40px 0 8px;}
  .article-head{max-width:840px;}
  .article-head h1{font-size:34px;line-height:1.35;font-weight:700;margin-bottom:16px;}
  .meta-line{
    display:flex;flex-wrap:wrap;align-items:center;gap:10px;
    font-size:13px;color:var(--muted);
  }
  .meta-line .dot{color:#C2CBD9;}
  .tag{
    display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
    background:var(--brand-50);color:var(--brand-700);font-size:12px;font-weight:600;
  }
  .lead{
    margin-top:22px;padding:18px 22px;background:var(--brand-50);
    border-left:4px solid var(--brand-600);border-radius:10px;
    font-size:17px;line-height:1.8;color:#26405F;
  }

  /* ---------- Layout ---------- */
  .article-section{padding:36px 0 96px;}
  .article-grid{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:48px;align-items:start;}

  .card{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
    box-shadow:var(--shadow-sm);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  }
  .card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);}

  /* ---------- Article body ---------- */
  .article-body{font-size:16px;line-height:1.9;color:var(--body);}
  .article-body > * + *{margin-top:1.2em;}
  .article-body p{margin:0;}
  .article-body h2{
    position:relative;font-size:26px;line-height:1.4;font-weight:600;color:var(--ink);
    padding-left:16px;margin-top:2em;
  }
  .article-body h2::before{
    content:"";position:absolute;left:0;top:.28em;width:4px;height:18px;
    background:var(--brand-600);border-radius:2px;
  }
  .article-body h3{font-size:20px;line-height:1.5;font-weight:600;color:var(--ink);margin-top:1.6em;}
  .article-body h4{font-size:17px;color:var(--ink);margin-top:1.4em;}
  .article-body ul,.article-body ol{margin:1.2em 0;padding-left:4px;}
  .article-body ul li{position:relative;padding-left:20px;margin-bottom:.6em;list-style:none;}
  .article-body ul li::before{
    content:"";position:absolute;left:0;top:.7em;width:7px;height:7px;border-radius:2px;background:var(--brand-600);
  }
  .article-body ol{counter-reset:li;padding-left:0;}
  .article-body ol li{position:relative;padding-left:32px;margin-bottom:.6em;counter-increment:li;list-style:none;}
  .article-body ol li::before{
    content:counter(li);position:absolute;left:0;top:.2em;width:22px;height:22px;border-radius:6px;
    background:var(--brand-50);color:var(--brand-700);font-size:12px;font-weight:700;
    display:flex;align-items:center;justify-content:center;
  }
  .article-body a{color:var(--brand-700);border-bottom:1px solid rgba(20,103,200,.35);}
  .article-body a:hover{color:var(--brand-600);border-bottom-color:var(--brand-600);}
  .article-body strong{color:var(--ink);font-weight:600;}
  .article-body blockquote{
    margin:1.5em 0;padding:16px 20px;background:var(--brand-50);
    border-left:4px solid var(--brand-600);border-radius:8px;color:#26405F;
  }
  .article-body blockquote p{margin:0;}
  .article-body img{border-radius:var(--radius-img);margin:1.5em auto;box-shadow:var(--shadow-sm);}
  .article-body figure{margin:1.6em 0;}
  .article-body figcaption{text-align:center;font-size:12px;color:var(--muted);margin-top:10px;}
  .article-body table{
    width:100%;border-collapse:collapse;font-size:14px;margin:1.6em 0;
    border:1px solid var(--line);border-radius:10px;overflow:hidden;
  }
  .article-body thead th{background:var(--bg);color:var(--ink);font-weight:600;text-align:left;}
  .article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--line);}
  .article-body tbody tr:nth-child(even){background:#FAFBFD;}
  .article-body tbody tr:last-child td{border-bottom:0;}
  .article-body pre{
    background:#F3F5F9;border:1px solid var(--line);border-radius:10px;padding:16px 18px;
    font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:13px;
    line-height:1.7;overflow-x:auto;color:#1E2B3D;
  }
  .article-body code{
    font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:13px;
    background:#F3F5F9;border-radius:6px;padding:2px 6px;color:#1E2B3D;
  }
  .article-body pre code{background:transparent;padding:0;}
  .article-body hr{border:0;border-top:1px solid var(--line);margin:2em 0;}

  .empty-state{
    min-height:240px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;
    background:var(--bg);border:1px dashed var(--line);border-radius:var(--radius-block);text-align:center;padding:32px;
  }
  .empty-state i{font-size:30px;color:var(--brand-600);}
  .empty-state p{color:var(--muted);font-size:15px;}

  /* ---------- Prev / Next ---------- */
  .pn-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:48px;}
  .pn-card{
    display:block;padding:20px 22px;background:#fff;border:1px solid var(--line);
    border-radius:var(--radius-card);box-shadow:var(--shadow-sm);
    transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  }
  .pn-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:var(--brand-100);}
  .pn-label{font-size:12px;color:var(--muted);margin-bottom:8px;display:flex;align-items:center;gap:8px;}
  .pn-title{font-size:16px;font-weight:600;color:var(--ink);line-height:1.6;}
  .pn-card:hover .pn-title{color:var(--brand-700);}
  .pn-card.next{text-align:right;}
  .pn-card.next .pn-label{justify-content:flex-end;}

  /* ---------- Related ---------- */
  .related{margin-top:56px;}
  .related-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:24px;}
  .section-title{font-size:24px;font-weight:600;color:var(--ink);}
  .section-sub{margin-top:6px;font-size:14px;color:var(--muted);}
  .text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand-700);}
  .text-link i{transition:transform .2s ease;}
  .text-link:hover{text-decoration:underline;}
  .text-link:hover i{transform:translateX(2px);}

  .card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
  .news-card{display:flex;flex-direction:column;overflow:hidden;background:#fff;border:1px solid var(--line);
    border-radius:var(--radius-card);box-shadow:var(--shadow-sm);
    transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;}
  .news-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:var(--brand-100);}
  .thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--brand-50);}
  .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
  .news-card:hover .thumb img{transform:scale(1.03);}
  .thumb .badge{
    position:absolute;left:12px;bottom:12px;height:24px;padding:0 10px;border-radius:999px;
    background:rgba(255,122,41,.92);color:#fff;font-size:12px;font-weight:600;
    display:inline-flex;align-items:center;
  }
  .news-card-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto;}
  .news-card h3{font-size:17px;line-height:1.6;font-weight:600;}
  .news-card:hover h3{color:var(--brand-700);}
  .news-card p{font-size:14px;line-height:1.7;color:var(--muted);}
  .news-card .meta{margin-top:auto;font-size:13px;color:var(--muted);display:flex;align-items:center;gap:8px;}

  .back-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:44px;}

  /* ---------- Sidebar ---------- */
  .article-side{position:sticky;top:112px;}
  .side-card{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
    box-shadow:var(--shadow-sm);padding:22px 20px;margin-bottom:20px;
  }
  .side-card h3{font-size:16px;font-weight:600;color:var(--ink);margin-bottom:14px;display:flex;align-items:center;gap:8px;}
  .side-card h3::before{content:"";width:4px;height:14px;background:var(--brand-600);border-radius:2px;}
  .side-list li{border-bottom:1px solid var(--line);padding-bottom:12px;margin-bottom:12px;}
  .side-list li:last-child{border-bottom:0;padding-bottom:0;margin-bottom:0;}
  .side-list a{display:block;font-size:15px;color:var(--ink);font-weight:500;line-height:1.6;}
  .side-list a:hover{color:var(--brand-700);}
  .side-list .side-meta{font-size:12px;color:var(--muted);margin-top:4px;}
  .tag-cloud{display:flex;flex-wrap:wrap;gap:8px;}
  .tag-cloud a{
    display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:999px;
    background:var(--bg);border:1px solid var(--line);font-size:13px;color:var(--body);
  }
  .tag-cloud a:hover{background:var(--brand-50);border-color:var(--brand-100);color:var(--brand-700);}

  /* ---------- CTA ---------- */
  .cta-band{
    margin-top:64px;background:var(--brand-50);border-radius:var(--radius-block);
    padding:44px 40px;display:flex;align-items:center;justify-content:space-between;gap:32px;
  }
  .cta-band h2{font-size:26px;line-height:1.4;}
  .cta-band p{margin-top:8px;font-size:15px;color:#3C5677;}

  /* ---------- Footer ---------- */
  .site-footer{background:var(--ink);color:#B9C3D2;padding:64px 0 0;margin-top:0;font-size:14px;}
  .footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding-bottom:40px;}
  .site-footer .logo-text{color:#fff;}
  .footer-brand p{margin-top:16px;line-height:1.8;color:#9EAABD;max-width:320px;}
  .footer-keywords{margin-top:14px;font-size:12px;color:#7F8CA1;letter-spacing:.02em;}
  .footer-col h4{font-size:15px;color:#fff;margin-bottom:16px;font-weight:600;}
  .footer-col ul li{margin-bottom:12px;}
  .footer-col ul li a{color:#B9C3D2;}
  .footer-col ul li a:hover{color:var(--accent-500);}
  .footer-contact li{display:flex;align-items:center;gap:10px;color:#B9C3D2;margin-bottom:12px;}
  .footer-contact i{color:var(--accent-500);width:16px;}
  .qr-box{
    width:96px;height:96px;border:1px dashed #3A4A63;border-radius:12px;
    display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;
    color:#7F8CA1;font-size:12px;margin-top:8px;
  }
  .qr-box i{font-size:26px;color:#54657F;}
  .footer-bottom{
    border-top:1px solid #1F2E45;padding:20px 0;display:flex;flex-wrap:wrap;gap:12px;
    align-items:center;justify-content:space-between;font-size:13px;color:#8B98AB;
  }
  .footer-links{display:flex;flex-wrap:wrap;align-items:center;gap:16px;}
  .footer-links a{color:#B9C3D2;}
  .footer-links a:hover{color:var(--accent-500);}

  .to-top{
    position:fixed;right:24px;bottom:28px;width:44px;height:44px;border-radius:50%;
    border:1px solid var(--line);background:#fff;color:var(--brand-700);
    box-shadow:var(--shadow-md);display:flex;align-items:center;justify-content:center;
    opacity:0;visibility:hidden;transform:translateY(8px);transition:all .25s ease;z-index:60;cursor:pointer;
  }
  .to-top.show{opacity:1;visibility:visible;transform:translateY(0);}
  .to-top:hover{background:var(--brand-600);color:#fff;border-color:var(--brand-600);}

  @media (max-width:1023px){
    .article-grid{grid-template-columns:1fr;gap:40px;}
    .article-side{position:static;}
    .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
    .cta-band{flex-direction:column;align-items:flex-start;padding:36px 28px;}
    .search-box{max-width:220px;}
  }
  @media (max-width:767px){
    .container{padding:0 16px;}
    .topbar-inner{height:56px;gap:12px;}
    .search-box{display:none;}
    .hamburger{display:inline-flex;}
    .topbar-actions .btn-sm{display:none;}
    .mobile-drawer{inset:56px 0 auto 0;}
    .article-head h1{font-size:26px;}
    .article-body h2{font-size:22px;}
    .article-body h3{font-size:18px;}
    .lead{font-size:16px;padding:16px 18px;}
    .card-grid{grid-template-columns:1fr;}
    .pn-grid{grid-template-columns:1fr;}
    .pn-card.next{text-align:left;}
    .pn-card.next .pn-label{justify-content:flex-start;}
    .article-section{padding:28px 0 64px;}
    .related-head{flex-direction:column;align-items:flex-start;}
    .cta-band{padding:28px 20px;border-radius:16px;}
    .cta-band h2{font-size:22px;}
    .footer-grid{grid-template-columns:1fr;gap:28px;}
    .footer-bottom{flex-direction:column;align-items:flex-start;}
    .to-top{right:16px;bottom:20px;}
    .article-body table{display:block;overflow-x:auto;white-space:nowrap;}
  }

/* roulang page: category3 */
:root{
    --brand-600:#1467C8;
    --brand-700:#0E4F9E;
    --brand-100:#D6E6FA;
    --brand-50:#EAF2FD;
    --accent-500:#FF7A29;
    --accent-600:#E8651A;
    --teal-500:#12A594;
    --ink:#0F1B2D;
    --body:#33445C;
    --muted:#6B7A90;
    --line:#E4E9F2;
    --bg:#F6F8FB;
    --white:#fff;
    --radius-card:14px;
    --radius-block:20px;
    --radius-btn:10px;
    --shadow-sm:0 1px 2px rgba(15,27,45,.06);
    --shadow-md:0 6px 18px rgba(15,27,45,.08);
    --shadow-lg:0 16px 40px rgba(15,27,45,.10);
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    font-family:'PingFang SC','Hiragino Sans GB','Microsoft YaHei','Source Han Sans SC','Noto Sans SC',system-ui,-apple-system,sans-serif;
    font-size:16px;
    line-height:1.8;
    color:var(--body);
    background:var(--white);
    letter-spacing:.01em;
  }
  h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:600;letter-spacing:.01em;}
  h1{font-size:44px;line-height:1.25;font-weight:700;}
  h2{font-size:30px;line-height:1.35;}
  h3{font-size:21px;line-height:1.5;}
  p{margin:0;}
  ul{margin:0;padding:0;list-style:none;}
  a{color:var(--brand-700);text-decoration:none;transition:color .2s ease;}
  a:hover{color:var(--brand-600);}
  img{max-width:100%;display:block;}
  button{font-family:inherit;}
  :focus-visible{outline:2px solid rgba(20,103,200,.45);outline-offset:2px;}
  .num{font-variant-numeric:tabular-nums;font-family:system-ui,-apple-system,sans-serif;}

  .container{max-width:1200px;margin:0 auto;padding:0 24px;}
  .no-scrollbar{-ms-overflow-style:none;scrollbar-width:none;}
  .no-scrollbar::-webkit-scrollbar{display:none;}

  /* ---------- header ---------- */
  .site-header{position:relative;z-index:40;background:#fff;}
  .topbar{height:64px;border-bottom:1px solid var(--line);}
  .topbar-inner{height:100%;display:flex;align-items:center;gap:20px;}
  .logo{display:flex;align-items:center;gap:10px;flex-shrink:0;}
  .logo-mark{
    width:36px;height:36px;flex:0 0 36px;display:grid;place-items:center;
    background:var(--brand-600);color:#fff;font-size:14px;font-weight:700;letter-spacing:.02em;
    clip-path:polygon(25% 0,75% 0,100% 50%,75% 100%,25% 100%,0 50%);
  }
  .logo-text{font-size:18px;font-weight:700;color:var(--ink);white-space:nowrap;}
  .search-box{flex:1;max-width:300px;position:relative;margin-left:8px;}
  .search-box input{
    width:100%;height:40px;border-radius:999px;border:1px solid var(--line);
    background:var(--bg);padding:0 44px 0 18px;font-size:14px;color:var(--body);
    transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
  }
  .search-box input::placeholder{color:var(--muted);}
  .search-box input:focus{outline:none;background:#fff;border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(20,103,200,.12);}
  .search-box .search-btn{
    position:absolute;right:5px;top:5px;width:30px;height:30px;border:none;border-radius:999px;
    background:transparent;color:var(--muted);cursor:pointer;display:grid;place-items:center;
  }
  .search-box .search-btn:hover{color:var(--brand-600);}
  .topbar-actions{margin-left:auto;display:flex;align-items:center;gap:12px;}
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:46px;padding:0 24px;border-radius:var(--radius-btn);border:1px solid transparent;
    font-size:15px;font-weight:600;cursor:pointer;transition:all .2s ease;white-space:nowrap;
  }
  .btn-primary{background:var(--accent-500);color:#fff;}
  .btn-primary:hover{background:var(--accent-600);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-md);}
  .btn-primary:active{transform:translateY(1px);}
  .btn-ghost{background:#fff;color:var(--brand-700);border-color:var(--brand-600);}
  .btn-ghost:hover{background:var(--brand-50);color:var(--brand-700);border-color:var(--brand-700);}
  .btn-sm{height:40px;padding:0 18px;font-size:14px;}
  .hamburger{
    display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);
    background:#fff;color:var(--ink);font-size:17px;cursor:pointer;
  }
  .hamburger:hover{background:var(--brand-50);border-color:var(--brand-100);}

  /* ---------- channel nav ---------- */
  .channel-nav{
    position:sticky;top:0;z-index:30;background:#fff;border-bottom:1px solid var(--line);
  }
  .channel-inner{
    display:flex;align-items:center;gap:8px;height:48px;
    overflow-x:auto;white-space:nowrap;
  }
  .pill{
    display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:999px;
    font-size:14px;color:#3C4C63;background:transparent;transition:all .2s ease;flex:0 0 auto;
  }
  .pill:hover{background:var(--brand-50);color:var(--brand-700);}
  .pill.active{background:var(--brand-600);color:#fff;box-shadow:var(--shadow-sm);}
  .pill.active:hover{background:var(--brand-700);color:#fff;}

  /* ---------- mobile drawer ---------- */
  .drawer{
    position:fixed;inset:0 0 0 auto;width:280px;background:#fff;z-index:60;
    transform:translateX(100%);transition:transform .25s ease;padding:20px;box-shadow:var(--shadow-lg);
  }
  .drawer.open{transform:translateX(0);}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
  .drawer-close{width:38px;height:38px;border-radius:10px;border:1px solid var(--line);background:#fff;cursor:pointer;color:var(--ink);}
  .drawer nav a{display:block;padding:12px 8px;border-radius:10px;color:var(--body);font-size:15px;}
  .drawer nav a:hover{background:var(--brand-50);color:var(--brand-700);}
  .drawer-mask{position:fixed;inset:0;background:rgba(15,27,45,.42);z-index:55;opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;}
  .drawer-mask.open{opacity:1;visibility:visible;}

  /* ---------- page hero ---------- */
  .page-hero{position:relative;overflow:hidden;background:var(--brand-50);}
  .page-hero .hero-bg{
    position:absolute;inset:0;background-size:cover;background-position:center right;
    opacity:.32;
  }
  .page-hero::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(90deg,rgba(234,242,253,.96) 0%,rgba(234,242,253,.86) 46%,rgba(234,242,253,.34) 100%);
  }
  .hero-inner{position:relative;z-index:2;padding:42px 0 48px;}
  .breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);flex-wrap:wrap;}
  .breadcrumb a{color:var(--muted);}
  .breadcrumb a:hover{color:var(--brand-600);text-decoration:underline;}
  .breadcrumb .sep{color:#B7C2D2;}
  .breadcrumb .current{color:var(--brand-700);max-width:260px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;height:28px;padding:0 14px;border-radius:999px;
    background:#fff;border:1px solid var(--brand-100);color:var(--brand-700);font-size:13px;font-weight:600;
    margin:22px 0 14px;
  }
  .page-hero h1{max-width:840px;font-size:40px;}
  .hero-sub{margin-top:14px;max-width:720px;font-size:18px;color:#3B4E68;line-height:1.75;}
  .hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
  .chip{
    display:inline-flex;align-items:center;gap:6px;height:30px;padding:0 13px;border-radius:999px;
    background:#fff;border:1px solid var(--line);color:var(--muted);font-size:13px;
  }
  .chip i{color:var(--brand-600);font-size:12px;}

  /* ---------- sections ---------- */
  .section{padding:88px 0;}
  .section.tight{padding:64px 0;}
  .section.soft{background:var(--bg);}
  .section-head{max-width:760px;margin-bottom:40px;}
  .section-head .kicker{
    display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--accent-500);
    letter-spacing:.06em;margin-bottom:12px;
  }
  .section-head .kicker::before{content:"";width:22px;height:2px;background:var(--accent-500);border-radius:2px;}
  .section-head h2{margin-bottom:12px;}
  .section-head p{font-size:16px;color:var(--body);}

  .grid{display:grid;gap:24px;}
  .g-2{grid-template-columns:repeat(2,minmax(0,1fr));}
  .g-3{grid-template-columns:repeat(3,minmax(0,1fr));}
  .g-main{grid-template-columns:7fr 5fr;}

  .card{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
    box-shadow:var(--shadow-sm);transition:all .2s ease;overflow:hidden;
  }
  .card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);}
  .card-body{padding:24px;}
  .card-num{
    font-size:30px;font-weight:700;color:var(--brand-100);line-height:1;
    font-variant-numeric:tabular-nums;font-family:system-ui,-apple-system,sans-serif;
  }
  .card h3{margin:12px 0 8px;font-size:20px;}
  .card:hover h3{color:var(--brand-700);}
  .card p{font-size:15px;line-height:1.75;color:var(--body);}
  .card-tag{
    display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
    background:var(--brand-50);color:var(--brand-700);font-size:12px;font-weight:600;
  }
  .card-tag.accent{background:rgba(255,122,41,.12);color:var(--accent-600);}
  .card-tag.teal{background:rgba(18,165,148,.12);color:#0E8577;}

  .mini-list{margin-top:14px;display:flex;flex-direction:column;gap:8px;}
  .mini-list li{position:relative;padding-left:16px;font-size:14px;color:var(--body);line-height:1.7;}
  .mini-list li::before{
    content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:2px;background:var(--brand-600);
  }

  .media-block{
    display:grid;grid-template-columns:5fr 7fr;gap:32px;align-items:center;
  }
  .media-frame{border-radius:16px;overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-md);background:var(--brand-50);}
  .media-frame img{width:100%;height:100%;aspect-ratio:16/10;object-fit:cover;}
  .kv-row{display:flex;gap:14px;padding:14px 0;border-bottom:1px dashed var(--line);}
  .kv-row:last-child{border-bottom:none;}
  .kv-row .k{flex:0 0 96px;font-size:14px;color:var(--muted);}
  .kv-row .v{font-size:15px;color:var(--body);}

  /* ---------- compare table ---------- */
  .table-wrap{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
    box-shadow:var(--shadow-sm);overflow-x:auto;
  }
  table.compare{width:100%;border-collapse:collapse;min-width:760px;}
  table.compare caption{
    caption-side:top;text-align:left;padding:20px 24px 0;font-size:15px;color:var(--muted);
  }
  table.compare th,table.compare td{
    padding:16px 24px;text-align:left;font-size:15px;border-bottom:1px solid var(--line);
  }
  table.compare thead th{
    background:var(--brand-50);color:var(--brand-700);font-weight:600;font-size:14px;
    border-bottom:1px solid var(--brand-100);
  }
  table.compare tbody tr:nth-child(even){background:#FBFCFE;}
  table.compare tbody tr:hover{background:var(--brand-50);}
  table.compare td:first-child{color:var(--ink);font-weight:600;}
  table.compare .tag-ok{color:#0E8577;font-weight:600;}

  /* ---------- steps ---------- */
  .step-list{display:flex;flex-direction:column;gap:0;position:relative;}
  .step{display:flex;gap:20px;padding-bottom:28px;position:relative;}
  .step:last-child{padding-bottom:0;}
  .step .dot{
    flex:0 0 38px;width:38px;height:38px;border-radius:999px;display:grid;place-items:center;
    background:var(--brand-50);border:1px solid var(--brand-100);color:var(--brand-700);
    font-size:14px;font-weight:700;z-index:1;font-variant-numeric:tabular-nums;
  }
  .step:not(:last-child)::before{
    content:"";position:absolute;left:18px;top:38px;bottom:0;width:1px;background:var(--brand-100);
  }
  .step h3{font-size:19px;margin-bottom:6px;}
  .step p{font-size:15px;}

  /* ---------- faq ---------- */
  .faq-list{display:flex;flex-direction:column;gap:12px;}
  .faq-item{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
    box-shadow:var(--shadow-sm);overflow:hidden;position:relative;
  }
  .faq-item::before{
    content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--brand-600);
    opacity:0;transition:opacity .2s ease;
  }
  .faq-item[open]::before{opacity:1;}
  .faq-item summary{
    list-style:none;cursor:pointer;padding:18px 56px 18px 24px;min-height:52px;
    display:flex;align-items:center;font-size:17px;font-weight:600;color:var(--ink);position:relative;
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary::after{
    content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);
    font-size:20px;color:var(--brand-600);line-height:1;transition:transform .2s ease;
  }
  .faq-item[open] summary::after{content:"−";transform:translateY(-50%) rotate(180deg);}
  .faq-item .faq-body{padding:0 24px 20px;font-size:15px;line-height:1.8;color:var(--body);border-top:1px solid var(--line);padding-top:16px;}

  /* ---------- cta band ---------- */
  .cta-band{
    background:var(--brand-50);border-radius:var(--radius-block);padding:48px 40px;
    display:flex;align-items:center;justify-content:space-between;gap:32px;
    border:1px solid var(--brand-100);
  }
  .cta-band h2{font-size:28px;margin-bottom:10px;}
  .cta-band p{font-size:16px;color:#3B4E68;max-width:620px;}
  .cta-actions{display:flex;gap:12px;flex-shrink:0;}

  /* ---------- footer ---------- */
  .site-footer{background:#0F1B2D;color:#C7D2E1;padding:64px 0 0;margin-top:0;}
  .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:40px;}
  .site-footer .logo-text{color:#fff;}
  .footer-brand p{margin-top:16px;font-size:14px;line-height:1.85;color:#9DAEC4;}
  .footer-keywords{margin-top:14px;font-size:13px;color:#7C8DA3;}
  .footer-col h4{color:#fff;font-size:16px;margin-bottom:16px;}
  .footer-col ul{display:flex;flex-direction:column;gap:12px;}
  .footer-col ul li{font-size:14px;color:#9DAEC4;}
  .footer-col a{color:#9DAEC4;}
  .footer-col a:hover{color:var(--accent-500);}
  .footer-contact li{display:flex;align-items:center;gap:8px;}
  .footer-contact i{color:var(--brand-100);font-size:13px;}
  .qr-box{
    margin-top:16px;width:96px;height:96px;border-radius:12px;border:1px dashed #35496A;
    display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;
    color:#7C8DA3;font-size:12px;background:rgba(255,255,255,.03);
  }
  .qr-box i{font-size:24px;color:#8FB4E4;}
  .footer-bottom{
    border-top:1px solid #24344C;padding:20px 0 28px;display:flex;flex-wrap:wrap;gap:14px;
    align-items:center;justify-content:space-between;font-size:13px;color:#7C8DA3;
  }
  .footer-links{display:flex;flex-wrap:wrap;gap:16px;align-items:center;}
  .footer-links a{color:#9DAEC4;}
  .footer-links a:hover{color:var(--accent-500);}

  /* ---------- back to top ---------- */
  .to-top{
    position:fixed;right:24px;bottom:24px;width:44px;height:44px;border-radius:999px;border:1px solid var(--line);
    background:#fff;color:var(--brand-700);box-shadow:var(--shadow-md);cursor:pointer;
    display:grid;place-items:center;font-size:16px;opacity:0;visibility:hidden;transition:all .25s ease;z-index:35;
  }
  .to-top.show{opacity:1;visibility:visible;}
  .to-top:hover{background:var(--brand-600);color:#fff;border-color:var(--brand-600);}

  @media (max-width:1024px){
    h1{font-size:34px;}
    .page-hero h1{font-size:34px;}
    .section{padding:64px 0;}
    .g-3{grid-template-columns:repeat(2,minmax(0,1fr));}
    .g-main{grid-template-columns:1fr;}
    .media-block{grid-template-columns:1fr;gap:24px;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
    .cta-band{flex-direction:column;align-items:flex-start;padding:40px 32px;}
    .search-box{max-width:220px;}
  }
  @media (max-width:768px){
    .container{padding:0 16px;}
    .search-box{display:none;}
    .hamburger{display:grid;place-items:center;}
    .topbar{height:56px;}
    .topbar-actions .btn-primary{display:none;}
    h1{font-size:30px;}
    .page-hero h1{font-size:29px;}
    h2{font-size:24px;}
    .section{padding:52px 0;}
    .section-head{margin-bottom:28px;}
    .g-2,.g-3{grid-template-columns:1fr;}
    .grid{gap:16px;}
    .card-body{padding:20px;}
    .breadcrumb .current{max-width:150px;}
    .hero-inner{padding:28px 0 34px;}
    .hero-sub{font-size:16px;}
    .cta-actions{width:100%;flex-direction:column;}
    .cta-actions .btn{width:100%;}
    .footer-grid{grid-template-columns:1fr;gap:28px;}
    .footer-bottom{flex-direction:column;align-items:flex-start;}
    .to-top{right:16px;bottom:88px;}
  }

/* roulang page: category4 */
:root{
    --brand-600:#1467C8;
    --brand-700:#0E4F9E;
    --brand-100:#D6E6FA;
    --brand-50:#EAF2FD;
    --accent-500:#FF7A29;
    --accent-600:#E8651A;
    --teal-500:#12A594;
    --ink:#0F1B2D;
    --body:#33445C;
    --muted:#6B7A90;
    --line:#E4E9F2;
    --bg-soft:#F6F8FB;
    --white:#FFFFFF;
    --radius-card:14px;
    --radius-block:20px;
    --radius-btn:10px;
    --shadow-sm:0 1px 2px rgba(15,27,45,.06);
    --shadow-md:0 6px 18px rgba(15,27,45,.08);
    --shadow-lg:0 16px 40px rgba(15,27,45,.10);
    --gap-section:92px;
    --gap-section-md:64px;
    --gap-section-sm:52px;
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    margin:0;
    font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,sans-serif;
    font-size:16px;
    line-height:1.8;
    color:var(--body);
    background:var(--white);
    -webkit-font-smoothing:antialiased;
  }
  h1,h2,h3,h4{margin:0;color:var(--ink);letter-spacing:.01em;font-weight:700;}
  h1{font-size:44px;line-height:1.25;}
  h2{font-size:30px;line-height:1.35;font-weight:600;}
  h3{font-size:21px;line-height:1.5;font-weight:600;}
  h4{font-size:17px;line-height:1.6;font-weight:600;}
  p{margin:0;}
  a{color:var(--brand-700);text-decoration:none;transition:color .2s ease, background-color .2s ease;}
  a:hover{color:var(--accent-600);}
  img{max-width:100%;display:block;}
  button{font-family:inherit;}
  ul{margin:0;padding:0;list-style:none;}
  .num{font-variant-numeric:tabular-nums;}

  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
  .no-scrollbar{-ms-overflow-style:none;scrollbar-width:none;}
  .no-scrollbar::-webkit-scrollbar{display:none;}
  .line-clamp-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
  .line-clamp-3{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}

  /* ---------- header ---------- */
  .site-header{position:relative;z-index:60;background:var(--white);}
  .header-inner{
    height:64px;display:flex;align-items:center;gap:20px;
  }
  .logo{display:inline-flex;align-items:center;gap:10px;color:var(--ink);font-weight:700;}
  .logo:hover{color:var(--ink);}
  .logo-mark{
    width:34px;height:34px;flex:0 0 34px;display:inline-flex;align-items:center;justify-content:center;
    background:var(--brand-600);color:#fff;font-size:13px;font-weight:700;letter-spacing:.04em;
    clip-path:polygon(50% 0%,93% 25%,93% 75%,50% 100%,7% 75%,7% 25%);
  }
  .logo-text{font-size:17px;letter-spacing:.01em;}
  .header-search{
    flex:1 1 auto;max-width:300px;margin-left:auto;position:relative;
  }
  .header-search input{
    width:100%;height:40px;border:1px solid var(--line);border-radius:999px;
    padding:0 42px 0 18px;font-size:14px;color:var(--body);background:var(--bg-soft);outline:none;
    transition:border-color .2s ease, box-shadow .2s ease, background .2s ease;
  }
  .header-search input::placeholder{color:#93A1B5;}
  .header-search input:focus{border-color:var(--brand-600);background:#fff;box-shadow:0 0 0 3px rgba(20,103,200,.12);}
  .header-search .search-icon{position:absolute;right:16px;top:50%;transform:translateY(-50%);color:#93A1B5;font-size:14px;}
  .header-cta{display:inline-flex;}

  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:46px;padding:0 26px;border-radius:var(--radius-btn);font-size:15px;font-weight:600;
    border:1px solid transparent;cursor:pointer;transition:all .2s ease;white-space:nowrap;
  }
  .btn-primary{background:var(--accent-500);color:#fff;box-shadow:var(--shadow-sm);}
  .btn-primary:hover{background:var(--accent-600);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-md);}
  .btn-primary:active{transform:translateY(1px);}
  .btn-secondary{background:#fff;color:var(--brand-700);border-color:var(--brand-600);}
  .btn-secondary:hover{background:var(--brand-50);color:var(--brand-700);border-color:var(--brand-700);}
  .btn:focus-visible,a:focus-visible,summary:focus-visible,input:focus-visible{
    outline:2px solid rgba(20,103,200,.4);outline-offset:2px;
  }
  .btn-sm{height:40px;padding:0 18px;font-size:14px;}

  .hamburger{
    display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:10px;
    background:#fff;color:var(--ink);font-size:16px;cursor:pointer;
  }
  .hamburger:hover{background:var(--bg-soft);}

  /* ---------- channel nav ---------- */
  .channel-nav{
    position:sticky;top:0;z-index:50;background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  }
  .channel-inner{
    height:48px;display:flex;align-items:center;gap:8px;overflow-x:auto;white-space:nowrap;
  }
  .pill{
    display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:999px;
    font-size:14px;color:#4A5B72;background:transparent;transition:all .2s ease;
  }
  .pill:hover{background:var(--brand-50);color:var(--brand-700);}
  .pill.active{background:var(--brand-600);color:#fff;box-shadow:var(--shadow-sm);}
  .pill.active:hover{background:var(--brand-700);color:#fff;}

  /* ---------- mobile drawer ---------- */
  .drawer{
    position:fixed;inset:0 0 0 auto;width:280px;background:#fff;box-shadow:var(--shadow-lg);
    transform:translateX(102%);transition:transform .25s ease;z-index:70;padding:22px 20px;
  }
  .drawer.open{transform:translateX(0);}
  .drawer-mask{
    position:fixed;inset:0;background:rgba(15,27,45,.38);opacity:0;visibility:hidden;transition:.25s ease;z-index:65;
  }
  .drawer-mask.open{opacity:1;visibility:visible;}
  .drawer a.drawer-link{display:block;padding:12px 4px;border-bottom:1px solid var(--line);color:var(--ink);font-size:15px;}
  .drawer a.drawer-link:hover{color:var(--brand-700);}

  /* ---------- hero ---------- */
  .page-hero{
    position:relative;background:var(--bg-soft);border-bottom:1px solid var(--line);overflow:hidden;
  }
  .page-hero::before{
    content:"";position:absolute;inset:0;
    background-image:url('/assets/images/backpic/back-3.png');
    background-size:cover;background-position:center;opacity:.14;
  }
  .page-hero .hero-inner{position:relative;z-index:2;padding:44px 0 52px;}
  .breadcrumb{font-size:13px;color:var(--muted);display:flex;flex-wrap:wrap;gap:6px;align-items:center;margin-bottom:16px;}
  .breadcrumb a{color:var(--muted);}
  .breadcrumb a:hover{color:var(--brand-700);text-decoration:underline;}
  .breadcrumb .current{color:var(--body);max-width:340px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
  .hero-tag{
    display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 12px;border-radius:999px;
    background:var(--brand-100);color:var(--brand-700);font-size:13px;font-weight:600;margin-bottom:14px;
  }
  .hero-lead{font-size:18px;color:var(--body);max-width:720px;margin-top:14px;}

  .hero-duo{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:26px;}
  .hero-duo .mini{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
    padding:18px 20px;box-shadow:var(--shadow-sm);transition:all .2s ease;
  }
  .hero-duo .mini:hover{box-shadow:var(--shadow-md);transform:translateY(-3px);}
  .hero-duo .mini h3{font-size:17px;margin-bottom:6px;}
  .hero-duo .mini p{font-size:14px;color:var(--muted);line-height:1.75;}

  /* ---------- sections ---------- */
  .section{padding:var(--gap-section) 0;}
  .section-soft{background:var(--bg-soft);}
  .section-head{margin-bottom:34px;}
  .section-head .eyebrow{
    font-size:13px;font-weight:600;color:var(--accent-600);letter-spacing:.08em;margin-bottom:10px;display:block;
  }
  .section-head p.section-desc{margin-top:12px;font-size:16px;color:var(--muted);max-width:760px;}

  .badge{
    display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
    font-size:12px;font-weight:600;background:var(--brand-50);color:var(--brand-700);border:1px solid var(--brand-100);
  }
  .badge-accent{background:rgba(255,122,41,.12);color:var(--accent-600);border-color:rgba(255,122,41,.24);}
  .badge-teal{background:rgba(18,165,148,.12);color:#0E7E72;border-color:rgba(18,165,148,.24);}

  .card{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
    box-shadow:var(--shadow-sm);transition:all .22s ease;overflow:hidden;
  }
  .card-hover:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);}
  .card-body{padding:24px;}
  .card h3{margin-bottom:10px;}
  .card p{color:var(--muted);font-size:15px;line-height:1.75;}

  .figure{border-radius:12px;overflow:hidden;border:1px solid var(--line);background:var(--brand-50);}
  .figure img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
  .figure:hover img{transform:scale(1.03);}

  /* ---------- two column checklist ---------- */
  .check-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
  .check-col{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:26px 26px 20px;box-shadow:var(--shadow-sm);}
  .check-col h3{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
  .check-col h3 .idx{
    display:inline-flex;align-items:center;justify-content:center;width:30px;height:30px;border-radius:9px;
    background:var(--brand-50);color:var(--brand-700);font-size:14px;font-weight:700;font-variant-numeric:tabular-nums;
  }
  .check-list li{display:flex;gap:10px;padding:11px 0;border-bottom:1px dashed var(--line);font-size:15px;}
  .check-list li:last-child{border-bottom:none;}
  .check-list li i{color:var(--teal-500);font-size:14px;margin-top:5px;}
  .check-list li strong{color:var(--ink);font-weight:600;}

  /* ---------- figure rows ---------- */
  .split{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;}
  .split.rev .split-media{order:2;}
  .feature-list{margin-top:18px;}
  .feature-list li{display:flex;gap:10px;align-items:flex-start;padding:8px 0;font-size:15px;color:var(--body);}
  .feature-list li::before{
    content:"";width:4px;height:16px;border-radius:2px;background:var(--brand-600);flex:0 0 4px;margin-top:9px;
  }

  .ratio-16-10{position:relative;padding-top:62.5%;}
  .ratio-16-10 > img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;}

  /* ---------- faq ---------- */
  .faq-wrap{max-width:900px;}
  .faq-item{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-sm);
    margin-bottom:12px;overflow:hidden;transition:box-shadow .2s ease,border-color .2s ease;
  }
  .faq-item:hover{box-shadow:var(--shadow-md);}
  .faq-item summary{
    list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
    min-height:56px;padding:16px 22px;font-size:16px;font-weight:600;color:var(--ink);
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary .q{display:flex;gap:10px;align-items:flex-start;}
  .faq-item summary .q .qno{color:var(--brand-600);font-variant-numeric:tabular-nums;font-weight:700;}
  .faq-item summary .icon{
    flex:0 0 26px;width:26px;height:26px;border-radius:8px;border:1px solid var(--line);
    display:inline-flex;align-items:center;justify-content:center;color:var(--brand-700);font-size:12px;
    transition:transform .2s ease, background .2s ease, color .2s ease;
  }
  .faq-item[open]{border-color:var(--brand-100);box-shadow:var(--shadow-md);}
  .faq-item[open] summary{border-left:3px solid var(--brand-600);}
  .faq-item[open] summary .icon{background:var(--brand-600);color:#fff;border-color:var(--brand-600);transform:rotate(180deg);}
  .faq-answer{padding:0 22px 20px 22px;font-size:15px;color:var(--body);line-height:1.85;}
  .faq-answer p + p{margin-top:10px;}

  .note-box{
    background:#fff;border:1px solid var(--line);border-left:4px solid var(--accent-500);
    border-radius:12px;padding:18px 20px;font-size:15px;color:var(--body);box-shadow:var(--shadow-sm);
  }

  /* ---------- cta ---------- */
  .cta-block{
    background:var(--brand-50);border:1px solid var(--brand-100);border-radius:var(--radius-block);
    padding:48px 40px;display:flex;align-items:center;justify-content:space-between;gap:28px;
  }
  .cta-block h2{font-size:26px;}
  .cta-block p{margin-top:10px;color:var(--body);font-size:15px;max-width:620px;}
  .cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

  /* ---------- footer ---------- */
  .site-footer{background:var(--ink);color:#C6D2E2;padding:64px 0 0;margin-top:0;}
  .footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:36px;padding-bottom:44px;}
  .site-footer .logo{color:#fff;}
  .site-footer .logo:hover{color:#fff;}
  .footer-brand p{font-size:14px;line-height:1.8;color:#94A6BE;margin-top:14px;max-width:320px;}
  .footer-keywords{font-size:12px !important;color:#6F829B !important;margin-top:10px !important;}
  .site-footer h4{color:#fff;font-size:15px;margin-bottom:16px;}
  .site-footer ul li{margin-bottom:12px;}
  .site-footer ul li a{color:#C6D2E2;font-size:14px;}
  .site-footer ul li a:hover{color:var(--accent-500);}
  .footer-contact li{display:flex;align-items:center;gap:8px;font-size:14px;color:#C6D2E2;}
  .footer-contact li i{color:var(--accent-500);}
  .qr-box{
    margin-top:16px;width:96px;height:96px;border-radius:12px;background:#16243A;border:1px solid #24344C;
    display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;color:#8DA0BA;font-size:12px;
  }
  .qr-box i{font-size:26px;color:#5C7796;}
  .footer-bottom{
    border-top:1px solid #22314A;padding:20px 0;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
    font-size:13px;color:#8DA0BA;
  }
  .footer-links{display:flex;gap:18px;flex-wrap:wrap;}
  .footer-links a{color:#8DA0BA;font-size:13px;}
  .footer-links a:hover{color:var(--accent-500);}

  /* ---------- back to top ---------- */
  #backTop{
    position:fixed;right:24px;bottom:28px;width:44px;height:44px;border-radius:50%;
    background:#fff;border:1px solid var(--line);color:var(--brand-700);box-shadow:var(--shadow-md);
    display:flex;align-items:center;justify-content:center;cursor:pointer;opacity:0;visibility:hidden;
    transition:all .25s ease;z-index:55;
  }
  #backTop.show{opacity:1;visibility:visible;}
  #backTop:hover{background:var(--brand-600);color:#fff;border-color:var(--brand-600);}

  /* ---------- responsive ---------- */
  @media (max-width:1023px){
    :root{--gap-section:var(--gap-section-md);}
    h1{font-size:36px;}
    h2{font-size:26px;}
    .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
    .cta-block{flex-direction:column;align-items:flex-start;padding:36px 28px;}
  }
  @media (max-width:767px){
    :root{--gap-section:var(--gap-section-sm);}
    .container{padding:0 16px;}
    h1{font-size:29px;}
    h2{font-size:23px;}
    h3{font-size:19px;}
    .header-inner{height:56px;gap:12px;}
    .header-search{display:none;}
    .header-cta{display:none;}
    .hamburger{display:inline-flex;align-items:center;justify-content:center;margin-left:auto;}
    .logo-text{font-size:16px;}
    .page-hero .hero-inner{padding:32px 0 40px;}
    .hero-lead{font-size:16px;}
    .hero-duo{grid-template-columns:1fr;}
    .check-grid{grid-template-columns:1fr;gap:16px;}
    .split{grid-template-columns:1fr;gap:24px;}
    .split.rev .split-media{order:0;}
    .footer-grid{grid-template-columns:1fr;gap:28px;}
    .footer-bottom{flex-direction:column;align-items:flex-start;}
    .btn{width:100%;}
    .cta-actions{width:100%;}
    .faq-item summary{padding:14px 16px;font-size:15px;}
    .faq-answer{padding:0 16px 18px 16px;}
    #backTop{right:16px;bottom:20px;}
  }