/* roulang page: index */
:root{
  --c-primary:#185B9C;
  --c-primary-d:#0F3E6E;
  --c-primary-l:#E9F1F9;
  --c-accent:#D9822B;
  --c-accent-l:#FBF1E4;
  --c-ink:#16202B;
  --c-text:#46586A;
  --c-muted:#8695A4;
  --c-line:#E3EAF1;
  --c-bg:#F6F8FB;
  --c-white:#FFFFFF;
  --r-card:14px;
  --r-img:12px;
  --r-btn:8px;
  --r-input:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(15,62,110,.05),0 6px 18px rgba(15,62,110,.06);
  --sh-2:0 14px 34px rgba(15,62,110,.12);
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;padding:0;background:var(--c-bg);color:var(--c-text);
  font-family:var(--font);font-size:16px;line-height:1.8;font-weight:400;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:700;line-height:1.3;text-wrap:pretty;}
h1{font-size:40px;line-height:1.25;}
h2{font-size:30px;}
h3{font-size:20px;line-height:1.4;font-weight:600;}
h4{font-size:17px;line-height:1.5;font-weight:600;}
p{margin:0 0 20px;text-wrap:pretty;}
p:last-child{margin-bottom:0;}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease;}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;}
img{max-width:100%;height:auto;display:block;background:var(--c-line);}
ul,ol{list-style:none;margin:0;padding:0;}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input{font:inherit;}

/* 布局容器与栅格 */
.grid-container{width:100%;max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px;}
.grid-x{display:flex;flex-wrap:wrap;margin-left:-16px;margin-right:-16px;}
.grid-x>.cell{width:100%;padding-left:16px;padding-right:16px;}
.align-middle{align-items:center;}
@media screen and (min-width:1024px){
  .grid-x>.large-3{width:25%;}
  .grid-x>.large-4{width:33.3333%;}
  .grid-x>.large-5{width:41.6667%;}
  .grid-x>.large-6{width:50%;}
  .grid-x>.large-7{width:58.3333%;}
  .grid-x>.large-8{width:66.6667%;}
}
@media screen and (min-width:768px) and (max-width:1023px){
  .grid-x>.medium-6{width:50%;}
}

/* 通用板块 */
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.section-white{background:var(--c-white);}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:36px;}
.sec-title{font-size:30px;line-height:1.3;}
.sec-sub{font-size:15px;color:var(--c-muted);margin:10px 0 0;}
.eyebrow{display:block;font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--c-primary);margin-bottom:10px;}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 26px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1.2;min-height:44px;
  transition:background-color .25s ease,color .25s ease,box-shadow .25s ease,transform .25s ease,border-color .25s ease;
}
.btn-primary{background:var(--c-primary);color:#fff;}
.btn-primary:hover{background:var(--c-primary-d);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-1);}
.btn-primary:active{transform:translateY(0);box-shadow:none;}
.btn-ghost{background:transparent;border-color:#CBD8E5;color:var(--c-primary);}
.btn-ghost:hover{background:var(--c-primary-l);border-color:var(--c-primary);color:var(--c-primary);}
.btn-sm{padding:9px 18px;font-size:14px;min-height:40px;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--c-primary);}
.link-arrow .arrow{transition:transform .2s ease;}
.link-arrow:hover .arrow{transform:translateX(4px);}

/* 徽章与胶囊 */
.badge{display:inline-block;align-self:flex-start;padding:4px 12px;border-radius:var(--r-pill);background:var(--c-primary-l);color:var(--c-primary);font-size:13px;font-weight:500;letter-spacing:.02em;line-height:1.5;}
.badge-soft{background:var(--c-bg);color:var(--c-muted);}
.pill{padding:6px 16px;border-radius:var(--r-pill);background:var(--c-primary-l);color:var(--c-primary);font-size:13px;letter-spacing:.02em;line-height:1.5;}
.pill.is-on{background:var(--c-primary);color:#fff;}

/* 页头导航 */
.site-header{position:sticky;top:0;z-index:120;background:var(--c-white);border-bottom:1px solid var(--c-line);transition:box-shadow .25s ease;}
.site-header.is-scrolled{box-shadow:var(--sh-1);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{width:36px;height:36px;border-radius:10px;background:var(--c-primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:700;line-height:1;}
.brand-text{font-size:20px;font-weight:700;color:var(--c-ink);letter-spacing:.01em;}
.main-nav{display:flex;align-items:center;gap:6px;}
.nav-link{position:relative;display:inline-flex;align-items:center;height:72px;padding:0 14px;font-size:15px;font-weight:500;color:var(--c-text);}
.nav-link::after{content:"";position:absolute;left:14px;right:14px;bottom:-1px;height:2px;background:var(--c-primary);transform:scaleX(0);transform-origin:left center;transition:transform .2s ease;}
.nav-link:hover{color:var(--c-primary);}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--c-primary);}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--c-line);border-radius:10px;flex-direction:column;align-items:center;justify-content:center;gap:5px;transition:background-color .2s ease,border-color .2s ease;}
.nav-toggle:hover{background:var(--c-primary-l);border-color:var(--c-primary-l);}
.nav-toggle span{display:block;width:20px;height:2px;border-radius:2px;background:var(--c-ink);transition:transform .25s ease,opacity .25s ease;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* Hero */
.hero{background:var(--c-white);border-bottom:1px solid var(--c-line);padding:80px 0 88px;}
.kicker{display:inline-block;padding:5px 14px;border-radius:var(--r-pill);background:var(--c-primary-l);color:var(--c-primary);font-size:13px;font-weight:500;letter-spacing:.02em;margin-bottom:20px;}
.hero-title{font-size:40px;line-height:1.25;font-weight:700;color:var(--c-ink);margin-bottom:16px;}
.hero-sub{font-size:17px;line-height:1.8;color:var(--c-text);max-width:560px;margin-bottom:28px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:20px;}
.hero-note{font-size:13px;color:var(--c-muted);letter-spacing:.02em;margin:0;}
.hero-media{position:relative;}
.hero-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:16px;box-shadow:var(--sh-2);}
.hero-float{position:absolute;right:28px;bottom:-20px;background:var(--c-white);border:1px solid var(--c-line);border-radius:12px;box-shadow:var(--sh-2);padding:14px 20px;display:flex;align-items:center;gap:10px;}
.hero-float-num{font-size:24px;font-weight:700;color:var(--c-primary);font-variant-numeric:tabular-nums;line-height:1;}
.hero-float-label{font-size:13px;color:var(--c-muted);line-height:1.4;}

/* 品牌说明区 */
.story-copy .sec-title{margin-bottom:16px;}
.story-copy p{font-size:16px;color:var(--c-text);}
.story-list{margin-top:8px;}
.story-item{display:flex;gap:20px;padding:24px 0;border-bottom:1px solid var(--c-line);}
.story-item:first-child{padding-top:0;}
.story-item:last-child{border-bottom:0;padding-bottom:0;}
.story-num{font-size:26px;font-weight:700;color:var(--c-accent);line-height:1.2;font-variant-numeric:tabular-nums;min-width:44px;}
.story-body h3{font-size:20px;margin-bottom:6px;}
.story-body p{font-size:14px;line-height:1.7;color:var(--c-text);margin:0;}
@media screen and (min-width:1024px){
  .story-list{padding-left:40px;}
}

/* 卡片 */
.card{background:var(--c-white);border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden;display:flex;flex-direction:column;transition:box-shadow .25s ease,transform .25s ease,border-color .25s ease;}
.card:hover{box-shadow:var(--sh-2);transform:translateY(-3px);border-color:var(--c-primary-l);}
.card img{width:100%;object-fit:cover;}
.card-lg img{aspect-ratio:16/9;}
.card-sm img{aspect-ratio:16/9;}
.card-body{padding:24px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto;}
.card-body p{margin:0;font-size:14px;line-height:1.75;color:var(--c-text);}
.card-lg .card-body h3{font-size:20px;}
.card-sm .card-body h4{font-size:17px;}
.stack{display:flex;flex-direction:column;gap:24px;}

/* 最新发布列表 */
.news-list{border-top:1px solid var(--c-line);}
.news-row{display:flex;align-items:center;gap:24px;padding:20px 12px;min-height:96px;border-bottom:1px solid var(--c-line);color:inherit;transition:background-color .2s ease;}
.news-row:hover{background:#F7FAFD;}
.news-date{flex:0 0 64px;width:64px;height:64px;border-radius:12px;background:var(--c-primary-l);display:flex;flex-direction:column;align-items:center;justify-content:center;line-height:1.2;}
.news-date b{font-size:24px;font-weight:700;color:var(--c-primary);font-variant-numeric:tabular-nums;}
.news-date i{font-style:normal;font-size:13px;color:var(--c-muted);}
.news-main{flex:1 1 auto;min-width:0;display:flex;flex-direction:column;align-items:flex-start;gap:6px;}
.news-title{font-size:17px;font-weight:600;line-height:1.5;color:var(--c-ink);margin:0;max-width:100%;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;transition:color .2s ease;}
.news-row:hover .news-title{color:var(--c-primary);}
.news-sum{font-size:14px;line-height:1.7;color:var(--c-text);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-thumb{flex:0 0 140px;width:140px;}
.news-thumb img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:10px;}
.news-go{flex:0 0 auto;font-size:18px;color:var(--c-primary);transition:transform .2s ease;}
.news-row:hover .news-go{transform:translateX(4px);}
.empty-state{border:1px dashed var(--c-line);border-radius:var(--r-card);background:var(--c-white);min-height:180px;padding:32px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;text-align:center;}
.empty-icon{width:44px;height:44px;border-radius:50%;background:var(--c-primary-l);color:var(--c-primary);display:flex;align-items:center;justify-content:center;font-size:20px;line-height:1;}
.empty-state p{font-size:14px;color:var(--c-muted);margin:0;}

/* 信任数据 */
.trust{background:var(--c-primary-d);padding:72px 0;color:rgba(255,255,255,.78);}
.trust-stats{display:grid;grid-template-columns:repeat(4,1fr);margin-bottom:44px;}
.trust-stats li{padding:0 24px;border-right:1px solid rgba(255,255,255,.14);}
.trust-stats li:first-child{padding-left:0;}
.trust-stats li:last-child{border-right:0;}
.trust-stats strong{display:block;font-size:36px;font-weight:700;color:var(--c-accent);line-height:1.2;font-variant-numeric:tabular-nums;margin-bottom:8px;}
.trust-stats span{font-size:14px;color:rgba(255,255,255,.72);}
.trust-partners{display:flex;flex-wrap:wrap;gap:14px 36px;padding-top:32px;border-top:1px solid rgba(255,255,255,.14);}
.trust-partners li{font-size:14px;color:rgba(255,255,255,.55);transition:color .2s ease;cursor:default;}
.trust-partners li:hover{color:#fff;}

/* FAQ */
.faq-list{border-top:1px solid var(--c-line);}
.faq-item{background:var(--c-white);border-bottom:1px solid var(--c-line);}
.faq-item>summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 0;font-size:17px;font-weight:600;color:var(--c-ink);transition:color .2s ease;}
.faq-item>summary::-webkit-details-marker{display:none;}
.faq-item>summary:hover{color:var(--c-primary);}
.faq-icon{position:relative;flex:0 0 20px;width:20px;height:20px;}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--c-primary);border-radius:2px;transition:transform .25s ease,opacity .25s ease;}
.faq-icon::before{left:0;top:9px;width:20px;height:2px;}
.faq-icon::after{left:9px;top:0;width:2px;height:20px;}
.faq-item[open] .faq-icon::after{transform:scaleY(0);opacity:0;}
.faq-body{padding:0 0 22px;font-size:16px;line-height:1.8;color:var(--c-text);max-width:760px;}

/* CTA 订阅 */
.cta-card{background:var(--c-white);border:1px solid var(--c-line);border-radius:18px;box-shadow:var(--sh-2);padding:48px;}
.cta-card .sec-title{margin-bottom:12px;}
.cta-card p{font-size:15px;color:var(--c-text);}
.sub-form{display:flex;gap:12px;margin-bottom:12px;}
.field{flex:1 1 auto;min-width:0;height:48px;padding:0 16px;border:1px solid var(--c-line);border-radius:var(--r-input);background:var(--c-white);color:var(--c-ink);font-size:15px;transition:border-color .2s ease,box-shadow .2s ease;}
.field::placeholder{color:var(--c-muted);}
.field:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(24,91,156,.14);}
.field.is-error{border-color:#C0392B;box-shadow:0 0 0 3px rgba(192,57,43,.12);}
.form-hint{font-size:12px;color:var(--c-muted);margin:0;}
.form-msg{display:none;margin-top:12px;padding:10px 14px;border-radius:10px;font-size:13px;line-height:1.6;}
.form-msg.is-ok{display:block;background:#EAF6EE;color:#1F6B3B;}
.form-msg.is-err{display:block;background:#FDECEA;color:#C0392B;}

/* 页脚 */
.site-footer{background:var(--c-primary-d);color:rgba(255,255,255,.78);padding-top:64px;}
.footer-grid{display:grid;grid-template-columns:4fr 2fr 3fr 3fr;gap:32px;padding-bottom:48px;}
.footer-brand .brand-text{color:#fff;}
.footer-brand .brand-mark{background:rgba(255,255,255,.16);}
.footer-desc{font-size:14px;line-height:1.8;color:rgba(255,255,255,.68);margin:16px 0 12px;}
.footer-col h3{font-size:15px;font-weight:600;color:rgba(255,255,255,.95);margin-bottom:16px;}
.footer-col li{margin-bottom:10px;font-size:14px;color:rgba(255,255,255,.78);}
.footer-col a{display:inline-block;color:rgba(255,255,255,.78);transition:color .2s ease,transform .2s ease;}
.footer-col a:hover{color:#fff;transform:translateX(2px);}
.footer-bottom{border-top:1px solid rgba(255,255,255,.14);padding:20px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.48);}

/* 响应式 */
@media screen and (max-width:1023px){
  .nav-toggle{display:flex;}
  .header-actions .btn-primary{display:none;}
  .main-nav{
    position:fixed;top:72px;left:0;right:0;z-index:110;
    flex-direction:column;align-items:stretch;gap:0;
    background:var(--c-white);border-bottom:1px solid var(--c-line);box-shadow:var(--sh-1);
    max-height:calc(100vh - 72px);overflow-y:auto;
    transform:translateY(-12px);opacity:0;visibility:hidden;
    transition:transform .25s ease,opacity .25s ease,visibility .25s ease;
  }
  .main-nav.is-open{transform:translateY(0);opacity:1;visibility:visible;}
  .nav-link{height:52px;padding:0 24px;font-size:16px;border-bottom:1px solid var(--c-line);}
  .nav-link::after{display:none;}
  .nav-link.is-active{background:var(--c-primary-l);}
  .nav-link.is-active::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--c-primary);}
  .hero{padding:48px 0 72px;}
  .hero-title{font-size:28px;}
  .hero-media{margin-top:40px;}
  .section{padding:56px 0;}
  .sec-title{font-size:22px;}
  .story-list{padding-left:0;margin-top:24px;}
  .cta-card{padding:28px;}
  .trust-stats{grid-template-columns:repeat(2,1fr);gap:32px 0;}
  .trust-stats li{padding:0;border-right:0;}
  .trust-stats li:nth-child(odd){border-right:1px solid rgba(255,255,255,.14);padding-right:16px;}
  .trust-stats li:nth-child(even){padding-left:16px;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .news-thumb{display:none;}
  .news-row{gap:16px;}
}
@media screen and (max-width:767px){
  .grid-container{padding-left:20px;padding-right:20px;}
  h1{font-size:28px;}
  .hero-title{font-size:28px;}
  .hero-actions{flex-direction:column;}
  .hero-actions .btn{width:100%;}
  .hero-float{right:16px;bottom:-16px;padding:12px 16px;}
  .card-body{padding:20px;}
  .news-row{flex-wrap:wrap;padding:16px 8px;}
  .news-sum{-webkit-line-clamp:3;}
  .sub-form{flex-direction:column;}
  .sub-form .btn{width:100%;}
  .cta-card{padding:24px;}
  .story-item{gap:14px;}
  .story-num{font-size:22px;min-width:34px;}
  .trust{padding:56px 0;}
  .trust-stats strong{font-size:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

/* roulang page: article */
:root{
  --c-primary:#185B9C;
  --c-primary-d:#0F3E6E;
  --c-primary-l:#E9F1F9;
  --c-accent:#D9822B;
  --c-accent-l:#FBF1E4;
  --c-ink:#16202B;
  --c-text:#46586A;
  --c-muted:#8695A4;
  --c-line:#E3EAF1;
  --c-bg:#F6F8FB;
  --c-white:#FFFFFF;
  --r-card:14px;
  --r-img:12px;
  --r-btn:8px;
  --r-input:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(15,62,110,.05),0 6px 18px rgba(15,62,110,.06);
  --sh-2:0 14px 34px rgba(15,62,110,.12);
  --fs-h1:40px;
  --fs-h2:30px;
  --fs-h3:20px;
  --fs-h4:17px;
  --font-cn:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  color:var(--c-text);
  background:var(--c-bg);
  text-wrap:pretty;
}
img{max-width:100%;display:block;border:0;background:var(--c-line);}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--c-primary-d);}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:700;letter-spacing:.01em;}
h1{font-size:var(--fs-h1);line-height:1.25;}
h2{font-size:var(--fs-h2);line-height:1.3;}
h3{font-size:var(--fs-h3);line-height:1.4;font-weight:600;}
h4{font-size:var(--fs-h4);line-height:1.5;font-weight:600;}
p{margin:0 0 20px;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;}
.grid-container{max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px;width:100%;}
.section{padding:80px 0;}
.section-tight{padding:56px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;}
.section-head h2{max-width:640px;}
.section-head p{margin:10px 0 0;color:var(--c-text);font-size:15px;}
.muted{color:var(--c-muted);}
.text-ink{color:var(--c-ink);}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 26px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1.2;cursor:pointer;
  transition:all .25s ease;text-align:center;
}
.btn-primary{background:var(--c-primary);color:#fff;}
.btn-primary:hover{background:var(--c-primary-d);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-1);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;border-color:#CBD8E5;color:var(--c-primary);}
.btn-ghost:hover{background:var(--c-primary-l);border-color:var(--c-primary);color:var(--c-primary-d);}
.btn-sm{padding:9px 18px;font-size:14px;}
.btn-block{width:100%;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--c-primary);}
.link-arrow .arrow{transition:transform .2s ease;}
.link-arrow:hover .arrow{transform:translateX(4px);}
.link-back{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;}
.link-back .arrow{transition:transform .2s ease;}
.link-back:hover .arrow{transform:translateX(-4px);}

/* 胶囊 */
.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:var(--r-pill);background:var(--c-primary-l);color:var(--c-primary);font-size:13px;letter-spacing:.02em;line-height:1.5;}
.badge-accent{background:var(--c-accent-l);color:var(--c-accent);}
.chip{display:inline-block;padding:8px 16px;border-radius:var(--r-pill);background:var(--c-primary-l);color:var(--c-primary);font-size:13px;transition:all .2s ease;}
.chip:hover{background:var(--c-primary);color:#fff;}

/* 头部导航 */
.site-header{
  position:sticky;top:0;z-index:60;background:var(--c-white);
  border-bottom:1px solid var(--c-line);transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh-1);}
.header-inner{display:flex;align-items:center;gap:20px;height:72px;}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--c-ink);}
.brand:hover{color:var(--c-ink);}
.brand-mark{
  width:36px;height:36px;border-radius:10px;background:var(--c-primary);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;font-size:17px;font-weight:700;letter-spacing:.04em;
}
.brand-text{font-size:20px;font-weight:700;color:var(--c-ink);}
.main-nav{display:flex;align-items:center;gap:2px;margin-left:auto;}
.nav-link{position:relative;padding:12px 14px;font-size:15px;font-weight:500;color:var(--c-text);}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:6px;height:2px;
  background:var(--c-primary);transform:scaleX(0);transform-origin:left;transition:transform .2s ease;
}
.nav-link:hover{color:var(--c-primary);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--c-primary);}
.nav-link.is-active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--c-line);border-radius:var(--r-btn);
  background:var(--c-white);padding:11px 10px;cursor:pointer;
}
.nav-toggle span{display:block;height:2px;background:var(--c-ink);border-radius:2px;margin-bottom:5px;transition:all .25s ease;}
.nav-toggle span:last-child{margin-bottom:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* 面包屑 */
.crumb-bar{background:var(--c-white);border-bottom:1px solid var(--c-line);}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-muted);padding:14px 0;}
.crumb a{color:var(--c-muted);}
.crumb a:hover{color:var(--c-primary);}
.crumb .sep{color:#C4D0DC;}
.crumb .current{color:var(--c-text);max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* 文章头 */
.article-head{background:var(--c-white);padding:48px 0 40px;border-bottom:1px solid var(--c-line);}
.article-head h1{max-width:900px;margin:16px 0 18px;word-break:break-word;}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:16px;font-size:13px;color:var(--c-muted);letter-spacing:.02em;}
.article-meta .dot{color:#C4D0DC;}

/* 正文布局 */
.article-main{padding:56px 0 72px;}
.article-layout{display:flex;flex-wrap:wrap;gap:40px;align-items:flex-start;}
.article-col{flex:1 1 620px;min-width:0;background:var(--c-white);border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-1);padding:36px;}
.article-side{flex:0 1 320px;min-width:280px;position:sticky;top:96px;display:flex;flex-direction:column;gap:20px;}
.article-content{max-width:760px;font-size:17px;line-height:1.9;color:var(--c-text);}
.article-content p{margin:0 0 1.15em;}
.article-content h2{position:relative;padding-left:16px;margin:40px 0 16px;font-size:26px;}
.article-content h2::before{content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:4px;border-radius:2px;background:var(--c-primary);}
.article-content h3{position:relative;padding-left:18px;margin:28px 0 12px;color:var(--c-ink);}
.article-content h3::before{content:"";position:absolute;left:2px;top:.62em;width:7px;height:7px;border-radius:50%;background:var(--c-accent);}
.article-content ul,.article-content ol{margin:0 0 1.15em;padding-left:2px;}
.article-content ul li{position:relative;padding-left:20px;margin-bottom:10px;line-height:1.9;}
.article-content ul li::before{content:"";position:absolute;left:0;top:.72em;width:8px;height:8px;border-radius:2px;background:var(--c-primary);}
.article-content ol{counter-reset:art;padding-left:0;}
.article-content ol li{position:relative;padding-left:30px;margin-bottom:10px;counter-increment:art;line-height:1.9;}
.article-content ol li::before{content:counter(art);position:absolute;left:0;top:.2em;color:var(--c-accent);font-weight:700;font-size:15px;}
.article-content blockquote{
  margin:24px 0;padding:20px;border-left:3px solid var(--c-accent);
  background:var(--c-accent-l);border-radius:0 var(--r-card) var(--r-card) 0;font-size:16px;
}
.article-content blockquote p:last-child{margin-bottom:0;}
.article-content img{border-radius:var(--r-img);margin:16px auto;border:1px solid var(--c-line);}
.article-content figure{margin:24px 0;}
.article-content figcaption{font-size:13px;color:var(--c-muted);text-align:center;margin-top:12px;}
.article-content table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;}
.article-content th,.article-content td{border-bottom:1px solid var(--c-line);padding:12px 14px;text-align:left;}
.article-content th{background:var(--c-primary-l);color:var(--c-ink);font-weight:600;}
.article-content code{background:var(--c-bg);border:1px solid var(--c-line);border-radius:6px;padding:2px 6px;font-size:14px;}
.article-content a{text-decoration:underline;}
.article-table-wrap{width:100%;overflow-x:auto;}

/* 侧栏卡片 */
.side-card{background:var(--c-white);border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-1);padding:24px;}
.side-card h3{font-size:13px;letter-spacing:.06em;color:var(--c-muted);font-weight:600;margin-bottom:14px;text-transform:none;}
.side-list li{border-bottom:1px solid var(--c-line);}
.side-list li:last-child{border-bottom:0;}
.side-list a{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:11px 0;font-size:14px;color:var(--c-text);}
.side-list a:hover{color:var(--c-primary);}
.side-list .arrow{color:var(--c-muted);transition:transform .2s ease;}
.side-list a:hover .arrow{transform:translateX(3px);color:var(--c-primary);}
.side-tips li{font-size:14px;line-height:1.8;padding-left:18px;position:relative;margin-bottom:10px;color:var(--c-text);}
.side-tips li::before{content:"";position:absolute;left:0;top:.72em;width:8px;height:8px;border-radius:2px;background:var(--c-accent);}
.side-card .btn{margin-top:4px;}

/* 空态 */
.empty-state{
  border:1px dashed var(--c-line);border-radius:var(--r-card);min-height:180px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  padding:36px 24px;text-align:center;background:var(--c-bg);
}
.empty-state i{font-size:26px;color:var(--c-muted);}
.empty-state p{margin:0;color:var(--c-text);}

/* 相关推荐 */
.related-grid{display:flex;flex-wrap:wrap;gap:28px;}
.rel-card{
  flex:1 1 300px;background:var(--c-white);border:1px solid var(--c-line);
  border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden;transition:all .25s ease;
}
.rel-card:hover{box-shadow:var(--sh-2);transform:translateY(-3px);border-color:var(--c-primary-l);}
.rel-card .thumb{aspect-ratio:16/10;width:100%;object-fit:cover;}
.rel-body{padding:20px;}
.rel-body h3{font-size:17px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.rel-body h3 a{color:var(--c-ink);}
.rel-body h3 a:hover{color:var(--c-primary);}
.rel-body p{margin:10px 0 0;font-size:14px;color:var(--c-text);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}

/* 订阅 CTA */
.cta-card{
  background:var(--c-white);border:1px solid var(--c-line);border-radius:18px;box-shadow:var(--sh-2);
  padding:40px;display:flex;flex-wrap:wrap;gap:32px;align-items:center;
}
.cta-card .cta-text{flex:1 1 320px;}
.cta-card .cta-text h2{max-width:420px;}
.cta-card .cta-text p{margin:12px 0 0;color:var(--c-text);font-size:15px;}
.cta-card .cta-form{flex:1 1 420px;}
.form-row{display:flex;gap:12px;flex-wrap:wrap;}
.input{
  flex:1 1 240px;height:48px;padding:0 16px;border:1px solid var(--c-line);border-radius:var(--r-input);
  background:var(--c-white);color:var(--c-ink);font-size:15px;font-family:inherit;transition:all .2s ease;
}
.input::placeholder{color:var(--c-muted);}
.input:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(24,91,156,.14);}
.form-note{font-size:12px;color:var(--c-muted);margin:12px 0 0;}
.form-msg{margin:12px 0 0;font-size:13px;padding:10px 14px;border-radius:8px;display:none;}
.form-msg.is-ok{display:block;background:var(--c-primary-l);color:var(--c-primary);}
.form-msg.is-err{display:block;background:#FBEAEA;color:#C0392B;}

/* 页脚 */
.site-footer{background:var(--c-primary-d);color:rgba(255,255,255,.78);padding:64px 0 0;margin-top:0;}
.footer-grid{display:flex;flex-wrap:wrap;gap:32px;}
.footer-brand{flex:1 1 300px;}
.footer-brand .brand-text{color:#fff;}
.footer-brand .brand-mark{background:rgba(255,255,255,.16);}
.footer-desc{margin:16px 0 16px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.78);max-width:340px;}
.footer-col{flex:0 1 200px;min-width:160px;}
.footer-col h3{color:rgba(255,255,255,.95);font-size:15px;margin-bottom:16px;}
.footer-col ul li{margin-bottom:10px;font-size:14px;}
.footer-col a{color:rgba(255,255,255,.78);}
.footer-col a:hover{color:#fff;transform:translateX(2px);display:inline-block;}
.footer-brand .link-arrow{color:#fff;}
.footer-bottom{
  margin-top:48px;border-top:1px solid rgba(255,255,255,.14);padding:20px 0;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.6);
}

@media screen and (max-width:1199px){
  h1{font-size:34px;}
  h2{font-size:26px;}
}
@media screen and (max-width:991px){
  .header-inner{height:72px;}
  .nav-toggle{display:block;}
  .main-nav{
    position:absolute;left:0;right:0;top:72px;flex-direction:column;align-items:stretch;gap:0;
    background:var(--c-white);border-bottom:1px solid var(--c-line);box-shadow:var(--sh-1);
    padding:8px 24px 20px;display:none;
  }
  .main-nav.is-open{display:flex;}
  .nav-link{padding:16px 0;font-size:16px;line-height:1.4;border-bottom:1px solid var(--c-line);}
  .nav-link::after{display:none;}
  .nav-link.is-active{box-shadow:inset 3px 0 0 var(--c-primary);padding-left:12px;}
  .header-actions .btn-primary{display:none;}
  .article-side{position:static;width:100%;}
  .section{padding:64px 0;}
}
@media screen and (max-width:767px){
  h1{font-size:28px;line-height:1.3;}
  h2{font-size:22px;}
  .grid-container{padding-left:20px;padding-right:20px;}
  .section{padding:56px 0;}
  .article-head{padding:32px 0 28px;}
  .article-col{padding:22px;}
  .article-content{font-size:16px;}
  .article-content h2{font-size:21px;}
  .cta-card{padding:24px;}
  .btn{width:100%;}
  .btn.btn-sm{width:auto;}
  .header-actions .btn-sm{display:none;}
  .footer-bottom{flex-direction:column;}
}
@media screen and (max-width:479px){
  .crumb .current{max-width:200px;}
  .rel-card{flex:1 1 100%;}
}

/* roulang page: category1 */
:root{
  --c-primary:#185B9C;
  --c-primary-d:#0F3E6E;
  --c-primary-l:#E9F1F9;
  --c-accent:#D9822B;
  --c-accent-l:#FBF1E4;
  --c-ink:#16202B;
  --c-text:#46586A;
  --c-muted:#8695A4;
  --c-line:#E3EAF1;
  --c-bg:#F6F8FB;
  --c-white:#FFFFFF;
  --r-card:14px;
  --r-img:12px;
  --r-btn:8px;
  --r-input:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(15,62,110,.05),0 6px 18px rgba(15,62,110,.06);
  --sh-2:0 14px 34px rgba(15,62,110,.12);
  --sec-gap:96px;
  --tr:.25s ease;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--c-primary);text-decoration:none;background-color:transparent;}
a:hover{color:var(--c-primary-d);}
button,input{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4{margin:0;color:var(--c-ink);line-height:1.35;font-weight:700;}
h1{font-size:40px;line-height:1.25;}
h2{font-size:30px;line-height:1.3;}
h3{font-size:20px;line-height:1.4;font-weight:600;}
h4{font-size:17px;line-height:1.5;font-weight:600;}
p{margin:0 0 20px;text-wrap:pretty;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
table{border-collapse:collapse;width:100%;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;}
.grid-container{max-width:1200px;padding-left:24px;padding-right:24px;}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--c-white);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow var(--tr);
}
.site-header.is-scrolled{box-shadow:var(--sh-1);}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  height:72px;gap:24px;
}
.brand{display:inline-flex;align-items:center;gap:10px;}
.brand-mark{
  width:36px;height:36px;border-radius:10px;background:var(--c-primary);
  color:#fff;font-weight:700;font-size:18px;
  display:flex;align-items:center;justify-content:center;
  flex:0 0 auto;letter-spacing:.02em;
}
.brand-text{font-size:20px;font-weight:700;color:var(--c-ink);letter-spacing:.01em;}
.main-nav{display:flex;align-items:center;gap:8px;}
.nav-link{
  position:relative;display:inline-block;
  padding:8px 12px;font-size:15px;font-weight:500;color:var(--c-text);
  border-radius:6px;transition:color var(--tr);
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--c-primary);transform:scaleX(0);transform-origin:left;
  transition:transform .2s ease;
}
.nav-link:hover{color:var(--c-primary);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--c-primary);font-weight:700;}
.nav-link.is-active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--c-line);
  background:var(--c-white);border-radius:var(--r-btn);
  padding:0;cursor:pointer;flex-direction:column;justify-content:center;align-items:center;gap:4px;
}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--c-ink);border-radius:2px;transition:transform var(--tr),opacity var(--tr);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 26px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1.4;cursor:pointer;
  border:1px solid transparent;transition:all var(--tr);
  min-height:44px;
}
.btn-primary{background:var(--c-primary);color:#fff;}
.btn-primary:hover{background:var(--c-primary-d);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-1);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;border-color:#CBD8E5;color:var(--c-primary);}
.btn-ghost:hover{background:var(--c-primary-l);border-color:var(--c-primary);color:var(--c-primary-d);}
.btn-light{background:#fff;color:var(--c-primary-d);}
.btn-light:hover{background:var(--c-primary-l);color:var(--c-primary-d);transform:translateY(-1px);}
.btn-sm{padding:9px 18px;font-size:14px;min-height:40px;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--c-primary);}
.link-arrow .arrow{transition:transform var(--tr);}
.link-arrow:hover .arrow{transform:translateX(4px);}
.link-arrow:hover{color:var(--c-primary-d);}

/* ============ 页头横幅 ============ */
.page-hero{
  background:var(--c-primary-l);
  border-bottom:1px solid var(--c-line);
  padding:56px 0;
}
.breadcrumb{font-size:13px;color:var(--c-muted);margin-bottom:14px;letter-spacing:.02em;}
.breadcrumb a{color:var(--c-muted);}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb .sep{margin:0 8px;color:#C3D0DC;}
.breadcrumb .current{color:var(--c-text);}
.page-hero h1{font-size:36px;max-width:820px;}
.page-hero .hero-lead{margin-top:12px;font-size:16px;color:var(--c-text);max-width:640px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px;}
.pill{
  display:inline-block;font-size:13px;letter-spacing:.02em;
  padding:4px 12px;border-radius:var(--r-pill);
  background:var(--c-white);color:var(--c-primary);border:1px solid #D5E3F0;
}
.pill-accent{background:var(--c-accent-l);color:var(--c-accent);border-color:#F1DCC2;}

/* ============ 板块通用 ============ */
.section{padding:var(--sec-gap) 0;}
.section-tight{padding:56px 0;}
.section-head{margin-bottom:40px;max-width:760px;}
.section-head .kicker{
  display:inline-block;font-size:13px;letter-spacing:.08em;font-weight:600;
  color:var(--c-primary);background:var(--c-primary-l);
  padding:4px 12px;border-radius:var(--r-pill);margin-bottom:14px;
}
.section-head p{margin-top:12px;}
.bg-white{background:var(--c-white);}
.bg-soft{background:var(--c-bg);}

/* ============ 数据条 ============ */
.stat-strip{background:var(--c-white);border-bottom:1px solid var(--c-line);padding:36px 0;}
.stat-grid{align-items:stretch;}
.stat-item{
  padding:8px 20px;border-left:2px solid var(--c-primary-l);
}
.stat-item .num{
  font-size:32px;font-weight:700;color:var(--c-primary);
  font-variant-numeric:tabular-nums;line-height:1.2;
}
.stat-item .num em{font-style:normal;font-size:16px;color:var(--c-muted);margin-left:4px;font-weight:500;}
.stat-item .label{font-size:14px;color:var(--c-muted);margin-top:2px;}

/* ============ 图文交替 ============ */
.zebra-row{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
}
.zebra-row + .zebra-row{margin-top:56px;padding-top:56px;border-top:1px solid var(--c-line);}
.zebra-row.is-reverse .zebra-text{order:2;}
.zebra-row.is-reverse .zebra-media{order:1;}
.zebra-index{
  font-size:26px;font-weight:700;color:var(--c-accent);
  font-variant-numeric:tabular-nums;line-height:1;margin-bottom:12px;display:block;
}
.zebra-text h2{font-size:28px;margin-bottom:16px;}
.zebra-text p{font-size:16px;color:var(--c-text);}
.zebra-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--r-img);box-shadow:var(--sh-1);
  background:var(--c-line);
}
.zebra-tips{
  margin-top:20px;padding:16px 20px;border-radius:var(--r-card);
  background:var(--c-accent-l);border-left:3px solid var(--c-accent);
  font-size:14px;line-height:1.7;color:#7A5327;
}

/* ============ 表格 ============ */
.table-wrap{
  overflow-x:auto;background:var(--c-white);
  border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-1);
}
.compare-table{min-width:680px;font-size:15px;}
.compare-table th,.compare-table td{
  padding:16px 20px;text-align:left;border-bottom:1px solid var(--c-line);
}
.compare-table thead th{
  background:var(--c-primary-l);color:var(--c-primary-d);
  font-size:14px;font-weight:600;letter-spacing:.02em;white-space:nowrap;
}
.compare-table tbody tr:last-child td{border-bottom:0;}
.compare-table tbody tr:hover{background:#F7FAFD;}
.compare-table td:first-child{font-weight:600;color:var(--c-ink);}
.table-note{font-size:13px;color:var(--c-muted);margin-top:12px;}

/* ============ CTA ============ */
.cta-band{background:var(--c-primary-d);padding:64px 0;}
.cta-band h2{color:#fff;font-size:28px;}
.cta-band .cta-text{color:rgba(255,255,255,.78);margin-top:12px;font-size:16px;max-width:460px;}
.cta-form{display:flex;gap:12px;flex-wrap:wrap;}
.cta-form input{
  flex:1 1 220px;height:48px;padding:0 16px;
  border:1px solid rgba(255,255,255,.28);border-radius:var(--r-input);
  background:rgba(255,255,255,.08);color:#fff;
  transition:border-color var(--tr),box-shadow var(--tr);
}
.cta-form input::placeholder{color:rgba(255,255,255,.55);}
.cta-form input:focus{
  outline:none;border-color:#7FB2DF;background:rgba(255,255,255,.14);
  box-shadow:0 0 0 3px rgba(127,178,223,.28);
}
.form-note{font-size:12px;color:rgba(255,255,255,.6);margin-top:12px;}
.form-msg{
  display:none;margin-top:14px;padding:10px 14px;border-radius:var(--r-btn);
  font-size:14px;line-height:1.6;
}
.form-msg.is-ok{display:block;background:rgba(255,255,255,.14);color:#fff;border:1px solid rgba(255,255,255,.28);}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-primary-d);color:rgba(255,255,255,.78);padding-top:64px;}
.footer-grid{
  display:grid;grid-template-columns:4fr 2fr 3fr 3fr;gap:32px;
  padding-bottom:48px;
}
.footer-brand .brand-text{color:#fff;}
.footer-brand .brand-mark{background:rgba(255,255,255,.16);}
.footer-desc{font-size:14px;line-height:1.8;color:rgba(255,255,255,.72);margin:16px 0 16px;max-width:340px;}
.footer-col h3{font-size:15px;font-weight:600;color:rgba(255,255,255,.95);margin-bottom:16px;}
.footer-col ul li{font-size:14px;line-height:1.9;color:rgba(255,255,255,.78);}
.footer-col ul li a{
  display:inline-block;color:rgba(255,255,255,.78);
  transition:color var(--tr),transform var(--tr);
}
.footer-col ul li a:hover{color:#fff;transform:translateX(2px);}
.site-footer .link-arrow{color:rgba(255,255,255,.88);font-size:14px;}
.site-footer .link-arrow:hover{color:#fff;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);
  padding:20px 0 24px;display:flex;justify-content:space-between;gap:16px;
  font-size:13px;color:rgba(255,255,255,.55);flex-wrap:wrap;
}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  :root{--sec-gap:80px;}
  h1{font-size:34px;}
  .page-hero h1{font-size:32px;}
  .zebra-row{gap:40px;}
}
@media (max-width:991px){
  .main-nav{gap:2px;}
  .nav-link{padding:8px;font-size:14px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .zebra-text h2{font-size:24px;}
}
@media (max-width:767px){
  :root{--sec-gap:56px;}
  .grid-container{padding-left:20px;padding-right:20px;}
  h1{font-size:28px;line-height:1.3;}
  h2{font-size:22px;}
  .header-inner{height:72px;}
  .nav-toggle{display:flex;}
  .header-actions .btn-sm{display:none;}
  .main-nav{
    position:absolute;top:72px;left:0;right:0;
    display:none;flex-direction:column;align-items:stretch;gap:0;
    background:var(--c-white);border-bottom:1px solid var(--c-line);
    box-shadow:var(--sh-1);padding:8px 0 16px;
  }
  .main-nav.is-open{display:flex;}
  .nav-link{padding:14px 24px;font-size:16px;line-height:24px;border-radius:0;min-height:52px;display:flex;align-items:center;}
  .nav-link::after{left:0;right:auto;top:8px;bottom:8px;width:3px;height:auto;transform:scaleY(0);transform-origin:top;}
  .nav-link:hover::after,.nav-link.is-active::after{transform:scaleY(1);}
  .nav-link.is-active{background:#F7FAFD;}
  .page-hero{padding:40px 0;}
  .page-hero h1{font-size:24px;}
  .stat-item{border-left:0;border-top:2px solid var(--c-primary-l);padding:12px 0;}
  .zebra-row{grid-template-columns:1fr;gap:24px;}
  .zebra-row.is-reverse .zebra-text{order:1;}
  .zebra-row.is-reverse .zebra-media{order:2;}
  .zebra-row + .zebra-row{margin-top:40px;padding-top:40px;}
  .zebra-media img{aspect-ratio:16/10;}
  .cta-band{padding:48px 0;}
  .cta-form input{flex:1 1 100%;}
  .cta-form .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .section{padding:56px 0;}
}
@media (max-width:479px){
  .stat-item .num{font-size:26px;}
  .compare-table th,.compare-table td{padding:12px 14px;font-size:14px;}
}

/* roulang page: category2 */
:root{
  --c-primary:#185B9C;
  --c-primary-d:#0F3E6E;
  --c-primary-l:#E9F1F9;
  --c-accent:#D9822B;
  --c-accent-l:#FBF1E4;
  --c-ink:#16202B;
  --c-text:#46586A;
  --c-muted:#8695A4;
  --c-line:#E3EAF1;
  --c-bg:#F6F8FB;
  --c-white:#FFFFFF;
  --r-card:14px;
  --r-img:12px;
  --r-btn:8px;
  --r-input:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(15,62,110,.05),0 6px 18px rgba(15,62,110,.06);
  --sh-2:0 14px 34px rgba(15,62,110,.12);
  --sect:96px;
}
*,*::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","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;line-height:1.8;color:var(--c-text);background:var(--c-bg);
  text-wrap:pretty;
}
img{max-width:100%;display:block;border:0}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--c-primary-d)}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:700;letter-spacing:.01em}
h1{font-size:40px;line-height:1.25}
h2{font-size:30px;line-height:1.3}
h3{font-size:20px;line-height:1.4;font-weight:600}
h4{font-size:17px;line-height:1.5;font-weight:600}
p{margin:0 0 20px}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
.grid-container{max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px;width:100%}
.section{padding:var(--sect) 0}
.section--tight{padding:72px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap}
.section-head .lead{margin-top:12px;font-size:16px;color:var(--c-text);max-width:660px}
.kicker{display:inline-block;font-size:13px;letter-spacing:.02em;line-height:1.5;padding:5px 14px;border-radius:var(--r-pill);background:var(--c-primary-l);color:var(--c-primary);font-weight:600}

/* 导航 */
.site-header{
  position:sticky;top:0;z-index:60;background:var(--c-white);
  border-bottom:1px solid var(--c-line);transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh-1)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px}
.brand{display:inline-flex;align-items:center;gap:12px}
.brand-mark{
  width:36px;height:36px;border-radius:10px;background:var(--c-primary);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;font-size:18px;font-weight:700;flex:0 0 36px;
}
.brand-text{font-size:20px;font-weight:700;color:var(--c-ink);letter-spacing:.01em}
.main-nav{display:flex;align-items:center;gap:6px}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:44px;
  font-size:15px;font-weight:500;color:var(--c-text);padding:0 14px;border-radius:8px;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:6px;height:2px;background:var(--c-primary);
  transform:scaleX(0);transform-origin:left;transition:transform .2s ease;
}
.nav-link:hover{color:var(--c-primary)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--c-primary)}
.nav-link.is-active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--c-line);border-radius:10px;background:var(--c-white);
  flex-direction:column;align-items:center;justify-content:center;gap:5px;cursor:pointer;padding:0;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--c-ink);border-radius:2px;transition:transform .25s ease,opacity .25s ease}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;padding:14px 26px;border-radius:var(--r-btn);
  border:1px solid transparent;cursor:pointer;transition:all .22s ease;min-height:44px;text-align:center;
}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-primary-d);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-1)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;color:var(--c-primary);border-color:#CBD8E5}
.btn-ghost:hover{background:var(--c-primary-l);border-color:var(--c-primary);color:var(--c-primary-d)}
.btn-sm{padding:11px 20px;font-size:14px}
.btn-block{width:100%}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--c-primary)}
.link-arrow .arrow{transition:transform .2s ease}
.link-arrow:hover .arrow{transform:translateX(4px)}
.link-arrow:hover{color:var(--c-primary-d)}

/* 分类页头 */
.page-hero{
  background:var(--c-primary-l);border-bottom:1px solid var(--c-line);
  padding:56px 0;
}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--c-muted);margin-bottom:18px;flex-wrap:wrap}
.breadcrumb a{color:var(--c-muted)}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb .sep{color:#C4D2DF}
.breadcrumb .current{color:var(--c-text)}
.page-hero h1{font-size:36px;line-height:1.25}
.page-hero .hero-lead{margin-top:16px;font-size:16px;color:var(--c-text);max-width:720px}
.hero-meta{display:flex;gap:10px;flex-wrap:wrap;margin-top:24px}
.pill{display:inline-block;font-size:13px;line-height:1.5;letter-spacing:.02em;padding:5px 12px;border-radius:var(--r-pill);background:var(--c-white);color:var(--c-primary);border:1px solid var(--c-line)}
.pill-accent{background:var(--c-accent-l);color:var(--c-accent);border-color:#F2E0C9}

/* 卡片网格 */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.op-card{
  background:var(--c-white);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-1);transition:box-shadow .25s ease,transform .25s ease,border-color .25s ease;
  display:flex;flex-direction:column;
}
.op-card:hover{box-shadow:var(--sh-2);transform:translateY(-3px);border-color:var(--c-primary-l)}
.icon-box{
  width:44px;height:44px;border-radius:12px;background:var(--c-primary-l);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;margin-bottom:18px;
}
.icon-box svg{width:22px;height:22px;stroke:var(--c-primary);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.op-card h3{margin-bottom:10px}
.op-card p{font-size:14px;line-height:1.75;color:var(--c-text);margin-bottom:18px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.op-card .card-foot{margin-top:auto;font-size:14px;font-weight:600}

/* 图文区 */
.split{display:grid;grid-template-columns:6fr 6fr;gap:48px;align-items:center}
.split-media img{width:100%;height:340px;object-fit:cover;border-radius:var(--r-img);box-shadow:var(--sh-1);background:var(--c-line)}
.split-body h2{margin-bottom:16px}
.check-list{margin-top:24px;display:grid;gap:14px}
.check-list li{position:relative;padding-left:30px;font-size:15px;line-height:1.9;color:var(--c-text)}
.check-list li::before{
  content:"";position:absolute;left:0;top:9px;width:16px;height:16px;border-radius:4px;background:var(--c-primary);
}
.check-list li::after{
  content:"";position:absolute;left:5px;top:13px;width:6px;height:3px;border-left:2px solid #fff;border-bottom:2px solid #fff;transform:rotate(-45deg);
}
.white-panel{background:var(--c-white);border-radius:18px;padding:48px;box-shadow:var(--sh-1);border:1px solid var(--c-line)}

/* 数据条 */
.metric-band{background:var(--c-white);border:1px solid var(--c-line);border-radius:18px;box-shadow:var(--sh-1);overflow:hidden}
.metric-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.metric{padding:32px 24px;border-right:1px solid var(--c-line);text-align:center}
.metric:last-child{border-right:0}
.metric .num{font-size:36px;font-weight:700;color:var(--c-accent);line-height:1.2;font-variant-numeric:tabular-nums}
.metric .num small{font-size:16px;font-weight:600;margin-left:2px}
.metric .label{font-size:14px;color:var(--c-muted);margin-top:8px}
.metric-note{padding:24px;border-top:1px solid var(--c-line);font-size:14px;color:var(--c-text);background:#FBFCFE}

/* FAQ */
.faq-wrap{max-width:880px;margin:0 auto}
.faq-list{background:var(--c-white);border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1)}
.faq-item + .faq-item{border-top:1px solid var(--c-line)}
.faq-q{margin:0;font-size:17px}
.faq-q button{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;background:none;border:0;text-align:left;cursor:pointer;
  font-size:17px;font-weight:600;color:var(--c-ink);line-height:1.5;min-height:44px;transition:background .2s ease;
}
.faq-q button:hover{background:#F7FAFD}
.faq-icon{position:relative;width:16px;height:16px;flex:0 0 16px}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--c-primary);border-radius:2px;transition:transform .25s ease}
.faq-icon::before{top:7px;left:0;width:16px;height:2px}
.faq-icon::after{top:0;left:7px;width:2px;height:16px}
.faq-item.is-open .faq-icon::after{transform:rotate(90deg) scaleY(0)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a p{padding:0 24px 22px;font-size:16px;line-height:1.8;color:var(--c-text);margin:0}

/* CTA 条 */
.cta-bar{
  background:var(--c-primary-d);border-radius:18px;padding:44px 48px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-bar h2{color:#fff;font-size:26px}
.cta-bar p{color:rgba(255,255,255,.76);font-size:15px;margin-top:10px}
.cta-bar .btn-primary{background:#fff;color:var(--c-primary-d)}
.cta-bar .btn-primary:hover{background:var(--c-primary-l);color:var(--c-primary-d)}

/* 页脚 */
.site-footer{background:var(--c-primary-d);color:rgba(255,255,255,.78);margin-top:var(--sect);padding-top:64px}
.footer-grid{display:grid;grid-template-columns:4fr 2fr 3fr 3fr;gap:32px;padding-bottom:48px}
.footer-brand .brand-text{color:#fff}
.footer-brand .brand-mark{background:#fff;color:var(--c-primary-d)}
.footer-desc{font-size:14px;line-height:1.8;margin:18px 0;color:rgba(255,255,255,.72)}
.footer-col h3{color:rgba(255,255,255,.95);font-size:15px;font-weight:600;margin-bottom:16px}
.footer-col ul{display:grid;gap:10px}
.footer-col li,.footer-col a{font-size:14px;color:rgba(255,255,255,.78)}
.footer-col a{display:inline-block;transition:color .2s ease,transform .2s ease}
.footer-col a:hover{color:#fff;transform:translateX(2px)}
.footer-brand .link-arrow{color:rgba(255,255,255,.9);font-size:14px}
.footer-brand .link-arrow:hover{color:#fff}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);padding:20px 0 28px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.6);
}

/* 响应式 */
@media (max-width:1199px){
  .card-grid{gap:24px}
}
@media (max-width:991px){
  :root{--sect:80px}
  .nav-toggle{display:flex}
  .main-nav{
    position:absolute;top:72px;left:0;right:0;background:var(--c-white);display:none;
    flex-direction:column;align-items:stretch;gap:0;border-bottom:1px solid var(--c-line);
    box-shadow:var(--sh-1);padding:8px 0 16px;max-height:calc(100vh - 72px);overflow-y:auto;
  }
  .main-nav.is-open{display:flex}
  .main-nav .nav-link{height:52px;border-radius:0;border-bottom:1px solid var(--c-line);padding:0 20px;font-size:16px}
  .main-nav .nav-link::after{display:none}
  .main-nav .nav-link.is-active{background:var(--c-primary-l);box-shadow:inset 3px 0 0 var(--c-primary)}
  .split{grid-template-columns:1fr;gap:32px}
  .split-media img{height:300px}
  .card-grid{grid-template-columns:repeat(2,1fr)}
  .metric-grid{grid-template-columns:repeat(2,1fr)}
  .metric:nth-child(2){border-right:0}
  .metric:nth-child(1),.metric:nth-child(2){border-bottom:1px solid var(--c-line)}
  .white-panel{padding:32px}
  .cta-bar{padding:32px}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:767px){
  :root{--sect:56px}
  h1{font-size:28px;line-height:1.3}
  h2{font-size:22px}
  .page-hero{padding:40px 0}
  .page-hero h1{font-size:28px}
  .grid-container{padding-left:20px;padding-right:20px}
  .card-grid{grid-template-columns:1fr;gap:16px}
  .section-head{margin-bottom:28px}
  .site-footer{margin-top:56px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:8px}
  .cta-bar{padding:28px 24px}
  .cta-bar h2{font-size:22px}
  .cta-bar .btn{width:100%}
  .split-media img{height:220px}
  .white-panel{padding:24px}
  .metric{padding:24px 16px}
}
@media (max-width:479px){
  .header-actions .btn{display:none}
  .metric-grid{grid-template-columns:1fr}
  .metric{border-right:0;border-bottom:1px solid var(--c-line)}
  .metric:last-child{border-bottom:0}
  .brand-text{font-size:18px}
}

/* roulang page: category3 */
:root{
  --c-primary:#185B9C;
  --c-primary-d:#0F3E6E;
  --c-primary-l:#E9F1F9;
  --c-accent:#D9822B;
  --c-accent-l:#FBF1E4;
  --c-ink:#16202B;
  --c-text:#46586A;
  --c-muted:#8695A4;
  --c-line:#E3EAF1;
  --c-bg:#F6F8FB;
  --c-white:#FFFFFF;
  --r-card:14px;
  --r-img:12px;
  --r-btn:8px;
  --r-input:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(15,62,110,.05), 0 6px 18px rgba(15,62,110,.06);
  --sh-2:0 14px 34px rgba(15,62,110,.12);
  --font-stack:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-stack);
  font-size:16px;
  line-height:1.8;
  color:var(--c-text);
  background:var(--c-bg);
}
img{max-width:100%;display:block;border-radius:var(--r-img);background:var(--c-line);}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--c-primary-d);}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;}
h1,h2,h3,h4{color:var(--c-ink);margin:0;font-weight:700;}
p{margin:0;text-wrap:pretty;}
ul{margin:0;padding:0;}

/* 容器 */
.grid-container{
  max-width:1200px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}

/* 按钮 */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  min-height:44px;
  padding:12px 26px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  cursor:pointer;
  text-align:center;
  transition:background-color .25s ease,color .25s ease,border-color .25s ease,transform .25s ease,box-shadow .25s ease;
}
.btn-primary{background:var(--c-primary);color:var(--c-white);}
.btn-primary:hover{background:var(--c-primary-d);color:var(--c-white);transform:translateY(-1px);box-shadow:var(--sh-1);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;color:var(--c-primary);border-color:#CBD8E5;}
.btn-ghost:hover{background:var(--c-primary-l);border-color:var(--c-primary);color:var(--c-primary);}
.btn-sm{min-height:40px;padding:9px 20px;font-size:14px;}
.btn-block{width:100%;}
.btn-light{background:var(--c-white);color:var(--c-primary-d);}
.btn-light:hover{background:var(--c-primary-l);color:var(--c-primary-d);}

/* 文字链接 */
.link-arrow{display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:600;color:var(--c-primary);}
.link-arrow .arrow{transition:transform .2s ease;display:inline-block;}
.link-arrow:hover .arrow{transform:translateX(4px);}

/* 徽章 */
.badge{
  display:inline-block;
  font-size:13px;
  letter-spacing:.02em;
  padding:4px 12px;
  border-radius:var(--r-pill);
  background:var(--c-primary-l);
  color:var(--c-primary);
  line-height:1.5;
}
.badge-accent{background:var(--c-accent-l);color:var(--c-accent);}

/* 导航 */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:var(--c-white);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh-1);}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:72px;
}
.brand{display:flex;align-items:center;gap:10px;}
.brand-mark{
  width:36px;height:36px;
  border-radius:10px;
  background:var(--c-primary);
  color:var(--c-white);
  display:flex;align-items:center;justify-content:center;
  font-size:18px;font-weight:700;
}
.brand-text{font-size:20px;font-weight:700;color:var(--c-ink);letter-spacing:.01em;}
.main-nav{display:flex;align-items:center;gap:32px;}
.nav-link{
  position:relative;
  font-size:15px;
  font-weight:500;
  color:var(--c-text);
  padding:26px 0;
  transition:color .2s ease;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;
  bottom:18px;
  width:0;
  height:2px;
  background:var(--c-primary);
  transition:width .2s ease;
}
.nav-link:hover{color:var(--c-primary);}
.nav-link:hover::after{width:100%;}
.nav-link.is-active{color:var(--c-primary);}
.nav-link.is-active::after{width:100%;}
.header-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:5px;
  width:44px;height:44px;
  border:1px solid var(--c-line);
  border-radius:10px;
  background:var(--c-white);
  cursor:pointer;
}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--c-ink);transition:transform .2s ease,opacity .2s ease;}
.nav-toggle.is-active span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.is-active span:nth-child(2){opacity:0;}
.nav-toggle.is-active span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* 页头横幅 */
.page-hero{
  background:var(--c-primary-l);
  border-bottom:1px solid var(--c-line);
  padding:56px 0;
}
.breadcrumb{font-size:13px;color:var(--c-muted);margin-bottom:14px;letter-spacing:.02em;}
.breadcrumb a{color:var(--c-muted);}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb .sep{margin:0 8px;}
.page-hero h1{
  font-size:36px;
  line-height:1.3;
  font-weight:700;
  margin-bottom:14px;
  max-width:820px;
}
.page-hero .hero-lead{max-width:760px;color:var(--c-text);}

/* 板块 */
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.bg-white{background:var(--c-white);}
.section-head{max-width:760px;margin-bottom:36px;}
.section-head h2{font-size:30px;line-height:1.3;font-weight:700;margin-bottom:12px;}
.section-head p{color:var(--c-text);}

/* 数据带 */
.metrics{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  background:var(--c-white);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  overflow:hidden;
}
.metric{padding:28px 24px;border-right:1px solid var(--c-line);}
.metric:last-child{border-right:0;}
.metric .num{
  font-size:30px;
  font-weight:700;
  color:var(--c-accent);
  line-height:1.2;
  font-variant-numeric:tabular-nums;
}
.metric .label{font-size:14px;color:var(--c-muted);margin-top:6px;}

/* 流程步骤 */
.steps{list-style:none;max-width:880px;}
.step{
  position:relative;
  display:grid;
  grid-template-columns:64px 1fr;
  gap:18px;
  padding-bottom:30px;
}
.step::before{
  content:"";
  position:absolute;
  left:31px;
  top:0;
  bottom:0;
  width:2px;
  background:var(--c-line);
}
.step:last-child{padding-bottom:0;}
.step:last-child::before{display:none;}
.step-num{
  position:relative;
  z-index:1;
  background:var(--c-white);
  font-size:32px;
  font-weight:700;
  line-height:1.1;
  color:var(--c-accent);
  font-variant-numeric:tabular-nums;
}
.step h3{font-size:20px;line-height:1.4;font-weight:600;margin-bottom:8px;}
.step p{font-size:15px;line-height:1.8;max-width:680px;}

/* 图文分栏 */
.split{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:start;}
.split figure{margin:0;}
.split img{width:100%;height:360px;object-fit:cover;box-shadow:var(--sh-1);}
.split figcaption{font-size:13px;color:var(--c-muted);margin-top:12px;line-height:1.7;}
.split h2{font-size:26px;line-height:1.35;margin-bottom:14px;}
.split .lead{margin-bottom:24px;}

/* 要点清单 */
.point-list{
  list-style:none;
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:14px 28px;
}
.point-list li{
  position:relative;
  padding-left:30px;
  font-size:15px;
  line-height:1.9;
  color:var(--c-text);
}
.point-list li::before{
  content:"✓";
  position:absolute;
  left:0;
  top:10px;
  width:18px;height:18px;
  border-radius:4px;
  background:var(--c-primary);
  color:var(--c-white);
  font-size:12px;
  line-height:18px;
  text-align:center;
}

/* 表格 */
.table-wrap{
  overflow-x:auto;
  background:var(--c-white);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
}
table.data{width:100%;border-collapse:collapse;min-width:680px;}
.data th,.data td{
  padding:16px 20px;
  text-align:left;
  font-size:15px;
  border-bottom:1px solid var(--c-line);
  vertical-align:top;
}
.data th{background:var(--c-primary-l);color:var(--c-ink);font-weight:600;}
.data tbody tr:last-child td{border-bottom:0;}
.data tbody tr:hover{background:#F7FAFD;}

/* CTA 条 */
.cta-band{background:var(--c-primary-d);padding:56px 0;}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;}
.cta-inner h2{color:var(--c-white);font-size:26px;line-height:1.35;margin-bottom:8px;}
.cta-inner p{color:rgba(255,255,255,.72);font-size:15px;}

/* 表单 */
.form-card{
  background:var(--c-white);
  border:1px solid var(--c-line);
  border-radius:18px;
  box-shadow:var(--sh-2);
  padding:40px;
}
.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.field{display:flex;flex-direction:column;gap:8px;}
.field label{font-size:14px;font-weight:600;color:var(--c-ink);}
.field input,.field select,.field textarea{
  width:100%;
  font-family:inherit;
  font-size:15px;
  color:var(--c-text);
  background:var(--c-white);
  border:1px solid var(--c-line);
  border-radius:var(--r-input);
  height:48px;
  padding:0 14px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{height:auto;min-height:132px;padding:12px 14px;line-height:1.7;resize:vertical;}
.field input::placeholder,.field textarea::placeholder{color:var(--c-muted);}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;
  border-color:var(--c-primary);
  box-shadow:0 0 0 3px rgba(24,91,156,.14);
}
.field-full{grid-column:1 / -1;}
.form-actions{margin-top:24px;display:flex;align-items:center;gap:16px;flex-wrap:wrap;}
.form-note{font-size:12px;color:var(--c-muted);margin-top:14px;}
.form-alert{display:none;margin-top:16px;padding:12px 16px;border-radius:10px;font-size:14px;line-height:1.7;}
.form-alert.is-ok{display:block;background:var(--c-primary-l);color:var(--c-primary);}
.form-alert.is-err{display:block;background:#FDECEA;color:#C0392B;}

/* 页脚 */
.site-footer{background:var(--c-primary-d);padding:64px 0 28px;color:rgba(255,255,255,.78);}
.footer-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:32px;}
.footer-brand{grid-column:span 4;}
.footer-col{grid-column:span 3;}
.footer-brand .brand-text{color:rgba(255,255,255,.95);}
.footer-brand .brand-mark{background:rgba(255,255,255,.14);color:var(--c-white);}
.footer-desc{font-size:14px;line-height:1.9;color:rgba(255,255,255,.72);margin:16px 0 16px;}
.site-footer h3{
  font-size:15px;
  font-weight:600;
  color:rgba(255,255,255,.95);
  margin-bottom:16px;
}
.site-footer ul{list-style:none;}
.site-footer li{font-size:14px;line-height:2.2;color:rgba(255,255,255,.78);}
.site-footer li a{
  color:rgba(255,255,255,.78);
  display:inline-block;
  transition:color .2s ease,transform .2s ease;
}
.site-footer li a:hover{color:#fff;transform:translateX(2px);text-decoration:none;}
.site-footer .link-arrow{color:rgba(255,255,255,.92);font-size:14px;}
.site-footer .link-arrow:hover{color:#fff;}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  margin-top:48px;
  padding-top:20px;
  border-top:1px solid rgba(255,255,255,.14);
  font-size:13px;
  color:rgba(255,255,255,.6);
}

/* 锚点偏移 */
#subscribe{scroll-margin-top:90px;}

/* 响应式 */
@media screen and (max-width:1024px){
  .split{gap:32px;}
}
@media screen and (max-width:991px){
  .grid-container{padding-left:22px;padding-right:22px;}
  .main-nav{
    position:absolute;
    top:72px;
    left:0;
    right:0;
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    background:var(--c-white);
    border-bottom:1px solid var(--c-line);
    box-shadow:var(--sh-1);
    padding:0;
  }
  .main-nav.is-open{display:flex;}
  .nav-link{
    padding:0 22px;
    line-height:52px;
    border-bottom:1px solid var(--c-line);
    font-size:16px;
  }
  .nav-link::after{display:none;}
  .nav-link.is-active{color:var(--c-primary);box-shadow:inset 3px 0 0 var(--c-primary);}
  .nav-toggle{display:flex;}
  .section{padding:72px 0;}
  .section-tight{padding:56px 0;}
  .metrics{grid-template-columns:repeat(2,1fr);}
  .metric:nth-child(2){border-right:0;}
  .metric:nth-child(1),.metric:nth-child(2){border-bottom:1px solid var(--c-line);}
  .split{grid-template-columns:1fr;}
  .split img{height:300px;}
  .footer-grid{grid-template-columns:repeat(2,1fr);}
  .footer-brand{grid-column:span 2;}
  .footer-col{grid-column:span 1;}
}
@media screen and (max-width:767px){
  body{font-size:16px;}
  .grid-container{padding-left:20px;padding-right:20px;}
  .page-hero{padding:40px 0;}
  .page-hero h1{font-size:28px;line-height:1.3;}
  .section{padding:56px 0;}
  .section-tight{padding:48px 0;}
  .section-head{margin-bottom:28px;}
  .section-head h2{font-size:22px;}
  .split h2{font-size:22px;}
  .header-actions .btn{display:none;}
  .metrics{grid-template-columns:1fr;}
  .metric{border-right:0;border-bottom:1px solid var(--c-line);padding:22px 20px;}
  .metric:last-child{border-bottom:0;}
  .step{grid-template-columns:50px 1fr;gap:12px;}
  .step-num{font-size:26px;}
  .step::before{left:24px;}
  .point-list{grid-template-columns:1fr;}
  .cta-band{padding:48px 0;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .cta-inner .btn{width:100%;}
  .form-card{padding:24px 20px;}
  .form-grid{grid-template-columns:1fr;}
  .form-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-brand,.footer-col{grid-column:span 1;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
}
@media screen and (max-width:480px){
  .page-hero h1{font-size:25px;}
  .brand-text{font-size:18px;}
  .split img{height:220px;}
}