/* roulang page: index */
:root{
  --c-primary:#1D4E89;
  --c-primary-deep:#12365F;
  --c-primary-soft:#E8F1FA;
  --c-accent:#FF7A29;
  --c-accent-2:#12B3A8;
  --c-bg:#F6F9FC;
  --c-surface:#FFFFFF;
  --c-line:#DCE6F1;
  --c-line-soft:#EDF3F9;
  --t1:#0F2136;
  --t2:#4A6382;
  --t3:#8698AC;
  --c-ok:#1F9D6B;
  --c-warn:#E0A106;
  --c-danger:#D6455B;
  --r-sm:8px; --r-md:12px; --r-lg:16px; --r-xl:24px; --r-pill:999px;
  --s1:0 1px 2px rgba(15,33,54,.04), 0 6px 18px rgba(15,33,54,.06);
  --s2:0 12px 32px rgba(15,33,54,.10);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--c-bg);color:var(--t2);
  font-family:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;line-height:1.9;letter-spacing:0;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.nav-locked{overflow:hidden}
h1,h2,h3,h4,h5{margin:0;color:var(--t1);font-weight:700;line-height:1.3;letter-spacing:0}
p{margin:0}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
dl,dd,dt,figure{margin:0}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}
.container-x{margin:0 auto;max-width:1200px;padding-left:16px;padding-right:16px}
@media (min-width:768px){.container-x{padding-left:24px;padding-right:24px}}
@media (min-width:1024px){.container-x{padding-left:32px;padding-right:32px}}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--c-line);transition:box-shadow .2s ease}
.site-header.scrolled{box-shadow:var(--s1)}
.nav-grid{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:12px;height:56px}
@media (min-width:1024px){.nav-grid{height:74px;gap:24px}}
.nav-list{display:flex;align-items:center;gap:26px}
.nav-list.right{justify-content:flex-end}
.nav-link{position:relative;display:inline-flex;align-items:center;color:var(--t2);font-size:15px;font-weight:500;padding:8px 2px;transition:color .18s ease-out}
.nav-link:hover{color:var(--c-primary)}
.nav-link::after{content:'';position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;background:var(--c-primary);transform:scaleX(0);transform-origin:center;transition:transform .2s ease-out}
.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)}
.brand{display:inline-flex;align-items:center;gap:9px}
.brand-mark{width:30px;height:30px;flex:none;display:block}
.brand-name{font-size:14px;font-weight:800;color:var(--t1);white-space:nowrap;letter-spacing:0}
@media (min-width:1024px){.brand-name{font-size:16px}}
@media (min-width:1280px){.brand-name{font-size:17px}}
.burger{width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;border-radius:var(--r-sm);color:var(--t1)}
.burger:hover{background:var(--c-primary-soft)}
.burger span{display:block;position:relative;width:20px;height:2px;border-radius:2px;background:currentColor}
.burger span::before,.burger span::after{content:'';position:absolute;left:0;width:20px;height:2px;border-radius:2px;background:currentColor}
.burger span::before{top:-6px}
.burger span::after{top:6px}
.drawer{position:fixed;inset:56px 0 0 0;background:#fff;border-top:1px solid var(--c-line);box-shadow:var(--s2);z-index:55;padding:20px 20px 36px;overflow-y:auto;transform:translateY(-8px);opacity:0;visibility:hidden;transition:opacity .2s ease,transform .2s ease,visibility .2s}
.drawer.open{opacity:1;visibility:visible;transform:translateY(0)}
.drawer-link{display:flex;align-items:center;justify-content:space-between;min-height:52px;padding:0 4px;border-bottom:1px solid var(--c-line-soft);font-size:16px;font-weight:600;color:var(--t1)}
.drawer-link.is-active{color:var(--c-primary)}
.drawer-link small{color:var(--t3);font-weight:400;font-size:13px}
@media (min-width:1024px){.drawer{display:none}}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 22px;border-radius:var(--r-md);font-size:15px;font-weight:600;line-height:1;white-space:nowrap;transition:background-color .18s ease-out,color .18s ease-out,box-shadow .18s ease-out,transform .18s ease-out,border-color .18s ease-out}
.btn-primary{background:var(--c-accent);color:#fff;box-shadow:var(--s1)}
.btn-primary:hover{background:#E8671A;box-shadow:var(--s2);transform:translateY(-1px)}
.btn-primary:active{background:#CC5A12;transform:translateY(0)}
.btn-outline{border:1px solid var(--c-primary);color:var(--c-primary);background:#fff}
.btn-outline:hover{background:var(--c-primary-soft);box-shadow:var(--s1)}
.btn-solid{background:var(--c-primary);color:#fff}
.btn-solid:hover{background:var(--c-primary-deep);box-shadow:var(--s2)}
.btn-text{color:var(--c-primary);font-weight:600;display:inline-flex;align-items:center;gap:6px;min-height:44px}
.btn-text:hover{text-decoration:underline;text-underline-offset:4px}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px}

/* ---------- 标签 / 徽章 ---------- */
.pill{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:var(--r-pill);font-size:12px;font-weight:600;line-height:1.8}
.pill-brand{background:var(--c-primary-soft);color:var(--c-primary)}
.pill-accent{background:#FFF1E6;color:#C85A13}
.pill-teal{background:#E3F7F5;color:#0B857C}
.pill-hot{background:var(--c-accent);color:#fff}
.pill-line{border:1px solid var(--c-line);color:var(--t3);background:#fff}

/* ---------- 卡片 ---------- */
.card{background:var(--c-surface);border:1px solid var(--c-line-soft);border-radius:var(--r-lg);box-shadow:var(--s1);transition:box-shadow .16s ease-out,transform .16s ease-out,border-color .16s ease-out}
.card:hover{box-shadow:var(--s2);transform:translateY(-2px);border-color:var(--c-line)}
.clamp-1{display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}
.clamp-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.clamp-3{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}

/* ---------- Hero ---------- */
.hero{position:relative;background:linear-gradient(180deg,#FFFFFF 0%,var(--c-bg) 100%);overflow:hidden}
.hero-deco{position:absolute;inset:0;pointer-events:none;background-image:linear-gradient(rgba(29,78,137,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(29,78,137,.06) 1px,transparent 1px);background-size:58px 58px;-webkit-mask-image:radial-gradient(circle at 84% 18%,#000 0%,transparent 60%);mask-image:radial-gradient(circle at 84% 18%,#000 0%,transparent 60%)}
.hero-ring{position:absolute;border:1px solid rgba(29,78,137,.10);border-radius:50%;pointer-events:none}
.hero-ring.a{width:340px;height:340px;left:-120px;bottom:-140px}
.hero-ring.b{width:200px;height:200px;right:6%;top:14%}
.hero-figure{position:relative;border-radius:var(--r-xl);overflow:hidden;box-shadow:var(--s2);background:var(--c-primary-soft);aspect-ratio:16/11}
.hero-figure img{width:100%;height:100%;object-fit:cover}
.hero-datacard{position:absolute;right:14px;bottom:14px;background:rgba(255,255,255,.96);border:1px solid var(--c-line);border-radius:var(--r-md);padding:12px 16px;box-shadow:var(--s1);min-width:150px}
@media (min-width:768px){.hero-datacard{right:20px;bottom:20px;padding:14px 20px}}
.trust-item strong{display:block;font-size:26px;font-weight:700;color:var(--c-primary);line-height:1.2}
@media (min-width:768px){.trust-item strong{font-size:30px}}
.trust-item span{display:block;font-size:13px;color:var(--t3);margin-top:2px}

/* ---------- 编号条目 ---------- */
.num-row{display:flex;gap:18px;padding:22px 0;border-bottom:1px solid var(--c-line-soft)}
.num-row:first-child{padding-top:6px}
.num-row:last-child{border-bottom:0;padding-bottom:6px}
.num-badge{flex:none;width:38px;height:38px;border-radius:var(--r-sm);background:var(--c-primary-soft);color:var(--c-primary);font-weight:700;font-size:14px;display:flex;align-items:center;justify-content:center;font-variant-numeric:tabular-nums}

/* ---------- 功能分组 ---------- */
.feature-img{border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--s1);background:var(--c-primary-soft);aspect-ratio:3/2}
.feature-img img{width:100%;height:100%;object-fit:cover}
.dot-li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--t2);line-height:1.8}
.dot-li::before{content:'';flex:none;width:7px;height:7px;border-radius:50%;background:var(--c-primary);margin-top:10px}

/* ---------- 场景横向滚动 ---------- */
.rail{display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;padding:4px 4px 18px;margin:-4px -4px -18px;scrollbar-width:thin}
.rail::-webkit-scrollbar{height:6px}
.rail::-webkit-scrollbar-thumb{background:var(--c-line);border-radius:99px}
.rail > *{scroll-snap-align:start;flex:0 0 calc((100% - 60px)/4);min-width:0}
@media (max-width:1023px){.rail > *{flex:0 0 calc((100% - 40px)/2.2)}}
@media (max-width:639px){.rail > *{flex:0 0 84%}}
.scene-card{background:#fff;border:1px solid var(--c-line-soft);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--s1);transition:box-shadow .16s ease-out,transform .16s ease-out;display:flex;flex-direction:column}
.scene-card:hover{box-shadow:var(--s2);transform:translateY(-2px)}
.scene-card img{width:100%;aspect-ratio:16/10;object-fit:cover}

/* ---------- 案例 ---------- */
.case-main{background:var(--c-primary-deep);color:rgba(255,255,255,.86);border-radius:var(--r-xl);padding:32px;box-shadow:var(--s2);display:flex;flex-direction:column;justify-content:space-between;gap:26px}
@media (min-width:768px){.case-main{padding:42px}}
.case-main h3{color:#fff}
.case-metric strong{display:block;font-size:26px;font-weight:700;color:var(--c-accent-2);line-height:1.2}
.case-metric span{display:block;font-size:13px;color:rgba(255,255,255,.62);margin-top:2px}
.case-side{background:#fff;border:1px solid var(--c-line-soft);border-radius:var(--r-lg);padding:24px;box-shadow:var(--s1);transition:box-shadow .16s ease-out,transform .16s ease-out}
.case-side:hover{box-shadow:var(--s2);transform:translateY(-2px)}

/* ---------- 资讯卡 ---------- */
.news-card{display:flex;flex-direction:column;overflow:hidden;background:#fff;border:1px solid var(--c-line-soft);border-radius:var(--r-lg);box-shadow:var(--s1);transition:box-shadow .16s ease-out,transform .16s ease-out;height:100%}
.news-card:hover{box-shadow:var(--s2);transform:translateY(-2px)}
.news-card img{width:100%;aspect-ratio:16/10;object-fit:cover;background:var(--c-primary-soft)}

/* ---------- 价格 ---------- */
.price-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);padding:28px 24px;box-shadow:var(--s1);display:flex;flex-direction:column;gap:18px;position:relative;transition:box-shadow .16s ease-out,transform .16s ease-out}
.price-card:hover{box-shadow:var(--s2)}
.price-card.featured{border:2px solid var(--c-primary);box-shadow:var(--s2);transform:scale(1.04);z-index:2}
@media (max-width:1023px){.price-card.featured{transform:none}}
.price-feat-badge{position:absolute;top:-13px;left:50%;transform:translateX(-50%);background:var(--c-accent);color:#fff;font-size:12px;font-weight:700;padding:5px 14px;border-radius:var(--r-pill);white-space:nowrap}
.price-value{font-size:32px;font-weight:700;color:var(--t1);line-height:1.2;font-variant-numeric:tabular-nums}
.check-li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;line-height:1.75}
.check-li .ic{flex:none;width:18px;height:18px;border-radius:50%;display:flex;align-items:center;justify-content:center;margin-top:5px;font-size:11px;font-weight:700}
.check-li.on{color:var(--t2)}
.check-li.on .ic{background:#E3F4ED;color:var(--c-ok)}
.check-li.off{color:var(--t3)}
.check-li.off .ic{background:#F1F4F8;color:var(--t3)}

/* ---------- FAQ ---------- */
.faq-item{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);overflow:hidden;transition:border-color .18s ease-out,box-shadow .18s ease-out}
.faq-item + .faq-item{margin-top:12px}
.faq-item[data-open="true"]{border-color:var(--c-line);box-shadow:var(--s1)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;text-align:left;padding:18px 20px;font-size:16px;font-weight:600;color:var(--t1);min-height:44px;position:relative}
.faq-q::before{content:'';position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--c-primary);opacity:0;transition:opacity .18s ease-out}
.faq-item[data-open="true"] .faq-q::before{opacity:1}
.faq-item[data-open="true"] .faq-q{color:var(--c-primary)}
.faq-icon{position:relative;width:16px;height:16px;flex:none}
.faq-icon::before,.faq-icon::after{content:'';position:absolute;background:var(--c-primary);border-radius:2px;transition:transform .22s ease-out,opacity .22s ease-out}
.faq-icon::before{left:0;right:0;top:7px;height:2px}
.faq-icon::after{top:0;bottom:0;left:7px;width:2px}
.faq-item[data-open="true"] .faq-icon::after{transform:scaleY(0);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease-out}
.faq-item[data-open="true"] .faq-a{max-height:460px}
.faq-a p{padding:0 20px 20px;color:var(--t2);font-size:15px;line-height:1.9}

/* ---------- CTA ---------- */
.cta-band{background:var(--c-primary);border-radius:var(--r-xl);padding:36px 28px;box-shadow:var(--s2)}
@media (min-width:768px){.cta-band{padding:48px 52px}}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-primary-deep);color:rgba(255,255,255,.78)}
.site-footer a{transition:color .18s ease-out}
.site-footer a:hover{color:var(--c-accent)}
.footer-title{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px}
.footer-link{display:block;padding:5px 0;font-size:14.5px;color:rgba(255,255,255,.72)}
.qr-box{width:96px;height:96px;border-radius:var(--r-md);border:1px dashed rgba(255,255,255,.32);display:flex;align-items:center;justify-content:center;font-size:12px;color:rgba(255,255,255,.6);background:rgba(255,255,255,.04);text-align:center;line-height:1.5}

/* ---------- 表单 ---------- */
.field-label{display:block;font-size:14px;font-weight:600;color:var(--t1);margin-bottom:8px}
.field-input{width:100%;height:44px;border:1px solid var(--c-line);border-radius:10px;padding:0 14px;font-size:15px;color:var(--t1);background:#fff;transition:border-color .18s ease-out,box-shadow .18s ease-out}
textarea.field-input{height:auto;padding:12px 14px;line-height:1.8;resize:vertical}
.field-input:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 4px rgba(29,78,137,.14)}
.field-input::placeholder{color:var(--t3)}

/* ---------- 区块标题 ---------- */
.sec-title{font-size:22px;line-height:1.35}
@media (min-width:768px){.sec-title{font-size:28px}}
.sec-desc{color:var(--t2);font-size:15px;line-height:1.85;margin-top:12px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;color:var(--c-primary);letter-spacing:0}
.eyebrow::before{content:'';width:22px;height:2px;border-radius:2px;background:var(--c-accent)}

@media (prefers-reduced-motion: reduce){
  *{transition:none !important;animation:none !important}
  html{scroll-behavior:auto}
}

/* roulang page: article */
:root{
  --c-primary:#1D4E89;
  --c-primary-deep:#12365F;
  --c-primary-soft:#E8F1FA;
  --c-accent:#FF7A29;
  --c-accent-2:#12B3A8;
  --c-bg:#F6F9FC;
  --c-surface:#FFFFFF;
  --c-line:#DCE6F1;
  --c-line-soft:#EDF3F9;
  --t1:#0F2136;
  --t2:#4A6382;
  --t3:#8698AC;
  --c-ok:#1F9D6B;
  --c-warn:#E0A106;
  --c-att:#D6455B;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:16px;
  --r-xl:24px;
  --s1:0 1px 2px rgba(15,33,54,.04), 0 6px 18px rgba(15,33,54,.06);
  --s2:0 12px 32px rgba(15,33,54,.10);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--t2);
  font-family:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.9;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--t1);font-weight:700;line-height:1.32}
p{margin:0}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}
body.no-scroll{overflow:hidden}

.container-x{width:100%;max-width:1200px;margin:0 auto;padding-left:16px;padding-right:16px}
@media (min-width:768px){.container-x{padding-left:24px;padding-right:24px}}
@media (min-width:1024px){.container-x{padding-left:32px;padding-right:32px}}

/* ---------- Header / Nav ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#fff;
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .2s ease-out;
}
.site-header.is-scrolled{box-shadow:var(--s1)}
.nav-grid{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:12px;
  min-height:60px;
}
@media (min-width:1024px){.nav-grid{min-height:76px;gap:24px}}
.nav-list{list-style:none;display:flex;align-items:center;gap:4px}
.nav-list.right{justify-content:flex-end}
.nav-link{
  position:relative;
  display:inline-flex;align-items:center;
  min-height:44px;padding:0 12px;
  font-size:15px;font-weight:500;color:var(--t2);
  border-radius:var(--r-md);
  transition:color .18s ease-out, background-color .18s ease-out;
  white-space:nowrap;
}
.nav-link:hover{color:var(--c-primary);background:var(--c-primary-soft)}
.nav-link.is-active{color:var(--c-primary);font-weight:700}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:8px;height:2px;
  border-radius:2px;background:var(--c-primary);
}
.brand{display:inline-flex;align-items:center;gap:9px}
.brand-mark{width:32px;height:32px;flex:0 0 auto}
.brand-name{
  font-size:13px;font-weight:700;color:var(--t1);letter-spacing:0;
  white-space:nowrap;
}
@media (min-width:400px){.brand-name{font-size:14px}}
@media (min-width:768px){.brand-name{font-size:15px}}
@media (min-width:1024px){.brand-name{font-size:17px}}
.burger{
  width:44px;height:44px;border-radius:var(--r-md);
  border:1px solid var(--c-line);background:#fff;
  display:inline-flex;align-items:center;justify-content:center;
  transition:background-color .18s ease-out, box-shadow .18s ease-out;
}
.burger:hover{background:var(--c-primary-soft)}
.burger span{position:relative;display:block;width:18px;height:2px;border-radius:2px;background:var(--t1)}
.burger span::before,.burger span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--t1);
}
.burger span::before{top:-6px}
.burger span::after{top:6px}

.mobile-drawer{
  position:fixed;inset:0;z-index:90;
  background:#fff;border-bottom:1px solid var(--c-line);
  box-shadow:var(--s2);
  padding:18px 16px 28px;
  transform:translateY(-102%);
  transition:transform .28s ease-out;
  overflow-y:auto;
}
.mobile-drawer.is-open{transform:translateY(0)}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  min-height:52px;padding:0 14px;margin-bottom:8px;
  border:1px solid var(--c-line-soft);border-radius:var(--r-md);
  font-size:15.5px;font-weight:500;color:var(--t2);
  transition:background-color .18s ease-out,color .18s ease-out,border-color .18s ease-out;
}
.drawer-link:hover{background:var(--c-primary-soft);color:var(--c-primary);border-color:var(--c-primary-soft)}
.drawer-link.is-active{color:var(--c-primary);font-weight:700;border-color:var(--c-primary-soft);background:var(--c-primary-soft)}
.drawer-close{
  width:44px;height:44px;border-radius:var(--r-md);border:1px solid var(--c-line);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:20px;color:var(--t2);background:#fff;
}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;border-radius:var(--r-md);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:background-color .18s ease-out,box-shadow .18s ease-out,color .18s ease-out,transform .18s ease-out,border-color .18s ease-out;
  cursor:pointer;
}
.btn-primary{background:var(--c-accent);color:#fff;box-shadow:var(--s1)}
.btn-primary:hover{background:#ea6a1b;box-shadow:var(--s2)}
.btn-primary:active{background:#d55d13}
.btn-outline{border-color:var(--c-primary);color:var(--c-primary);background:#fff}
.btn-outline:hover{background:var(--c-primary-soft);box-shadow:var(--s1)}
.btn-solid{background:var(--c-primary);color:#fff}
.btn-solid:hover{background:var(--c-primary-deep);box-shadow:var(--s2)}
.btn-sm{min-height:40px;padding:0 16px;font-size:14px;border-radius:10px}
.link-more{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--c-primary);font-size:14.5px;font-weight:600;
  text-underline-offset:4px;
}
.link-more:hover{text-decoration:underline}

/* ---------- Pills / Chips ---------- */
.tag-pill{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:999px;background:var(--c-primary-soft);color:var(--c-primary);
  font-size:12px;font-weight:700;letter-spacing:.02em;
}
.tag-pill.accent{background:var(--c-accent);color:#fff}
.chip{
  display:inline-flex;align-items:center;height:34px;padding:0 14px;
  border:1px solid var(--c-line);border-radius:999px;background:#fff;
  font-size:13px;color:var(--t2);
  transition:border-color .18s ease-out,color .18s ease-out,background-color .18s ease-out;
}
.chip:hover{border-color:var(--c-primary);color:var(--c-primary);background:var(--c-primary-soft)}

/* ---------- Article head ---------- */
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--t3);line-height:1.6}
.crumbs a{color:var(--t3);transition:color .18s ease-out}
.crumbs a:hover{color:var(--c-primary)}
.crumbs .sep{color:#C3D2E2;font-size:12px}
.crumbs .current{color:var(--t2);max-width:62ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-title{
  font-size:28px;line-height:1.32;font-weight:700;color:var(--t1);
  margin:16px 0 18px;word-break:break-word;
}
@media (min-width:768px){.article-title{font-size:36px}}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:14px;color:var(--t3)}
.article-meta .vline{display:inline-block;width:1px;height:12px;background:var(--c-line)}
.article-meta strong{color:var(--t2);font-weight:600}
.cover-figure{margin:28px 0 0}
.cover-figure img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-lg);box-shadow:var(--s1)}
.cover-figure figcaption{margin-top:10px;text-align:center;font-size:13px;color:var(--t3)}

/* ---------- Article body / prose ---------- */
.article-wrap{
  display:grid;grid-template-columns:minmax(0,820px);
  justify-content:center;gap:48px;
}
@media (min-width:1280px){.article-wrap{grid-template-columns:minmax(0,820px) 240px}}
.article-body{
  background:var(--c-surface);border:1px solid var(--c-line-soft);
  border-radius:var(--r-xl);box-shadow:var(--s1);
  padding:28px 20px 32px;
}
@media (min-width:768px){.article-body{padding:44px 48px 52px}}
.prose-zh{font-size:16px;line-height:1.9;color:var(--t2);word-break:break-word}
.prose-zh p{margin:0 0 1.2em}
.prose-zh h2{
  font-size:22px;font-weight:700;color:var(--t1);
  margin:32px 0 16px;padding-left:14px;border-left:4px solid var(--c-primary);line-height:1.35;
}
.prose-zh h3{font-size:20px;font-weight:700;color:var(--t1);margin:26px 0 12px}
.prose-zh h4{font-size:17px;font-weight:700;color:var(--t1);margin:20px 0 10px}
.prose-zh ul,.prose-zh ol{margin:0 0 1.2em;padding-left:1.5em}
.prose-zh li{margin-bottom:.5em;line-height:1.85}
.prose-zh ul li::marker{color:var(--c-primary)}
.prose-zh ol li::marker{color:var(--c-primary);font-weight:700}
.prose-zh blockquote{
  margin:0 0 1.4em;padding:20px;background:var(--c-primary-soft);
  border-left:4px solid var(--c-primary);border-radius:0 var(--r-md) var(--r-md) 0;
  color:#2E5478;
}
.prose-zh blockquote p:last-child{margin-bottom:0}
.prose-zh img{border-radius:var(--r-md);margin:24px auto;max-width:100%;height:auto}
.prose-zh a{color:var(--c-primary);text-decoration:underline;text-underline-offset:4px}
.prose-zh a:hover{color:var(--c-primary-deep)}
.prose-zh strong{color:var(--t1);font-weight:700}
.prose-zh hr{border:0;border-top:1px solid var(--c-line);margin:32px 0}
.prose-zh table{width:100%;border-collapse:collapse;margin:0 0 1.4em;font-size:15px;overflow:hidden;border-radius:var(--r-md)}
.prose-zh th{background:var(--c-primary-soft);color:var(--t1);font-weight:700;text-align:left;padding:12px 14px;border:1px solid var(--c-line)}
.prose-zh td{padding:12px 14px;border:1px solid var(--c-line);color:var(--t2)}
.prose-zh tbody tr:nth-child(even) td{background:#FAFCFE}
.prose-zh code{background:var(--c-primary-soft);border-radius:6px;padding:2px 6px;font-size:14.5px;color:#2E5478}

/* ---------- TOC ---------- */
.toc{display:none}
@media (min-width:1280px){
  .toc{display:block;position:sticky;top:100px;align-self:start}
}
.toc.is-empty{display:none!important}
.toc-box{background:#fff;border:1px solid var(--c-line-soft);border-radius:var(--r-lg);padding:18px 16px;box-shadow:var(--s1)}
.toc-title{font-size:13px;font-weight:700;color:var(--t1);letter-spacing:.06em;margin-bottom:10px}
.toc-list{list-style:none;border-left:1px solid var(--c-line)}
.toc-list a{
  display:block;padding:6px 0 6px 14px;margin-left:-1px;
  font-size:13.5px;line-height:1.6;color:var(--t3);
  border-left:2px solid transparent;
  transition:color .18s ease-out,border-color .18s ease-out;
}
.toc-list a:hover,.toc-list a.is-current{color:var(--c-primary);border-left-color:var(--c-primary)}

/* ---------- Empty state ---------- */
.empty-state{
  background:#fff;border:1px dashed var(--c-line);border-radius:var(--r-lg);
  padding:48px 24px;text-align:center;
}
.empty-state h2{font-size:19px;margin-bottom:10px}
.empty-state p{font-size:15px;color:var(--t3);margin-bottom:20px}

/* ---------- Footer meta blocks ---------- */
.meta-grid{display:grid;gap:14px}
@media (min-width:768px){.meta-grid{grid-template-columns:1fr 1fr}}
.pn-card{
  display:block;background:#fff;border:1px solid var(--c-line);
  border-radius:var(--r-lg);padding:18px 20px;box-shadow:var(--s1);
  transition:box-shadow .18s ease-out,transform .18s ease-out,border-color .18s ease-out;
}
.pn-card:hover{box-shadow:var(--s2);transform:translateY(-2px);border-color:#C9DBEF}
.pn-label{display:block;font-size:12.5px;color:var(--t3);margin-bottom:6px}
.pn-title{display:block;font-size:16px;font-weight:700;color:var(--t1);line-height:1.55}

/* ---------- News / recommend cards ---------- */
.card{
  display:flex;flex-direction:column;height:100%;
  background:var(--c-surface);border:1px solid var(--c-line-soft);
  border-radius:var(--r-lg);box-shadow:var(--s1);overflow:hidden;
  transition:box-shadow .18s ease-out,transform .18s ease-out;
}
.card:hover{box-shadow:var(--s2);transform:translateY(-2px)}
.card-thumb{aspect-ratio:16/10;overflow:hidden;background:var(--c-primary-soft)}
.card-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out}
.card:hover .card-thumb img{transform:scale(1.03)}
.card-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-title{font-size:17px;font-weight:700;color:var(--t1);line-height:1.5}
.card-desc{font-size:14.5px;line-height:1.85;color:var(--t2)}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--t3)}

/* ---------- CTA ---------- */
.cta-banner{
  background:var(--c-primary);border-radius:var(--r-xl);
  padding:36px 24px;color:#fff;
  display:flex;flex-wrap:wrap;gap:24px;align-items:center;justify-content:space-between;
}
@media (min-width:768px){.cta-banner{padding:44px 48px}}
.cta-banner h2{color:#fff;font-size:24px;line-height:1.35}
.cta-banner p{color:rgba(255,255,255,.78);font-size:15px;margin-top:10px;max-width:56ch;line-height:1.85}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- Footer ---------- */
.site-footer{background:var(--c-primary-deep);color:#fff;margin-top:64px}
.footer-title{font-size:14px;font-weight:700;color:#fff;margin:0 0 14px;letter-spacing:.04em}
.footer-link{display:block;padding:6px 0;font-size:14.5px;color:rgba(255,255,255,.72);transition:color .18s ease-out}
.footer-link:hover{color:var(--c-accent)}
.qr-box{
  width:64px;height:64px;border-radius:var(--r-md);
  background:rgba(255,255,255,.12);border:1px dashed rgba(255,255,255,.32);
  display:flex;align-items:center;justify-content:center;
  font-size:11px;line-height:1.35;color:rgba(255,255,255,.78);text-align:center;
}

/* roulang page: category1 */
:root{
  --c-primary:#1D4E89;
  --c-primary-deep:#12365F;
  --c-primary-soft:#E8F1FA;
  --c-accent:#FF7A29;
  --c-accent-2:#12B3A8;
  --c-bg:#F6F9FC;
  --c-surface:#FFFFFF;
  --c-line:#DCE6F1;
  --c-line-soft:#EDF3F9;
  --t1:#0F2136;
  --t2:#4A6382;
  --t3:#8698AC;
  --ok:#1F9D6B;
  --warn:#E0A106;
  --danger:#D6455B;
  --r-sm:8px;--r-md:12px;--r-lg:16px;--r-xl:24px;--pill:999px;
  --s1:0 1px 2px rgba(15,33,54,.04), 0 6px 18px rgba(15,33,54,.06);
  --s2:0 12px 32px rgba(15,33,54,.10);
}

/* ============ reset / base ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--t2);
  font-family:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.9;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5{color:var(--t1);font-weight:700;line-height:1.32;margin:0;letter-spacing:0}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px}
body.no-scroll{overflow:hidden}

/* ============ container ============ */
.container-x{width:100%;max-width:1200px;margin:0 auto;padding-left:16px;padding-right:16px}
@media(min-width:768px){.container-x{padding-left:24px;padding-right:24px}}
@media(min-width:1024px){.container-x{padding-left:32px;padding-right:32px}}

/* ============ header / nav ============ */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:var(--s1)}
.nav-grid{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;
  gap:10px;height:56px;
}
@media(min-width:1024px){.nav-grid{height:72px;gap:16px}}
.nav-list{display:flex;align-items:center;gap:2px}
.nav-list.right{justify-content:flex-end}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:44px;
  padding:0 11px;border-radius:10px;
  font-size:14px;font-weight:500;color:var(--t2);
  transition:color .16s ease,background-color .16s ease;white-space:nowrap;
}
@media(min-width:1280px){.nav-link{font-size:15px;padding:0 13px}}
.nav-link:hover{color:var(--c-primary);background:var(--c-primary-soft)}
.nav-link.is-active{color:var(--c-primary);font-weight:700}
.nav-link.is-active::after{
  content:"";position:absolute;left:11px;right:11px;bottom:4px;height:2px;
  border-radius:2px;background:var(--c-primary);
}
.brand{display:inline-flex;align-items:center;gap:9px;padding:6px 8px;border-radius:12px}
.brand-mark{width:30px;height:30px;flex:none}
@media(min-width:1280px){.brand-mark{width:32px;height:32px}}
.brand-name{font-size:15px;font-weight:700;color:var(--t1);white-space:nowrap}
@media(min-width:1280px){.brand-name{font-size:16.5px}}
.burger{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;background:#fff;border:1px solid var(--c-line);
  border-radius:12px;cursor:pointer;transition:border-color .16s ease,background-color .16s ease;
}
.burger:hover{border-color:var(--c-primary);background:var(--c-primary-soft)}
.burger span{position:relative;display:block;width:18px;height:2px;border-radius:2px;background:var(--t1);transition:background-color .16s ease}
.burger span::before,.burger span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--t1);
  transition:top .2s ease .1s,transform .2s ease;
}
.burger span::before{top:-6px}
.burger span::after{top:6px}
.burger[aria-expanded="true"] span{background:transparent}
.burger[aria-expanded="true"] span::before{top:0;transform:rotate(45deg);transition:top .2s ease,transform .2s ease .1s}
.burger[aria-expanded="true"] span::after{top:0;transform:rotate(-45deg);transition:top .2s ease,transform .2s ease .1s}

/* 移动端抽屉 */
.mobile-drawer{
  position:fixed;left:0;right:0;top:56px;bottom:0;z-index:55;
  background:#fff;border-top:1px solid var(--c-line);box-shadow:var(--s2);
  padding:16px 16px 40px;overflow-y:auto;
  opacity:0;visibility:hidden;transform:translateY(-10px);
  transition:opacity .22s ease,transform .22s ease,visibility .22s;
}
.mobile-drawer.is-open{opacity:1;visibility:visible;transform:none}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  min-height:52px;padding:0 14px;margin-bottom:8px;border-radius:12px;
  font-size:15.5px;font-weight:500;color:var(--t1);
  background:var(--c-bg);border:1px solid var(--c-line-soft);
  transition:background-color .16s ease,color .16s ease,border-color .16s ease;
}
.drawer-link:hover{background:var(--c-primary-soft);color:var(--c-primary);border-color:var(--c-primary)}
.drawer-link.is-active{color:var(--c-primary);font-weight:700;border-color:var(--c-primary);background:var(--c-primary-soft)}
.drawer-link::after{content:"›";font-size:18px;color:var(--t3);line-height:1}

/* ============ buttons / tags ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 22px;border-radius:12px;border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;
  transition:background-color .16s ease,color .16s ease,border-color .16s ease,box-shadow .16s ease,transform .16s ease;
}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--c-accent);color:#fff}
.btn-primary:hover{background:#ef6a17;box-shadow:var(--s2)}
.btn-outline{background:#fff;color:var(--c-primary);border-color:var(--c-primary)}
.btn-outline:hover{background:var(--c-primary-soft);box-shadow:var(--s1)}
.btn-white{background:#fff;color:var(--c-primary)}
.btn-white:hover{background:#eef4fb;box-shadow:var(--s2)}
.btn-ghost-white{background:transparent;color:#fff;border-color:rgba(255,255,255,.55)}
.btn-ghost-white:hover{background:rgba(255,255,255,.12);border-color:#fff}
.btn-sm{min-height:42px;padding:0 17px;font-size:14px;border-radius:11px}
.tag-pill{
  display:inline-flex;align-items:center;height:28px;padding:0 13px;border-radius:var(--pill);
  background:var(--c-primary-soft);color:var(--c-primary);font-size:12.5px;font-weight:600;
}
.tag-pill.is-teal{background:rgba(18,179,168,.12);color:#0d8b83}

/* ============ hero ============ */
.page-hero{position:relative;overflow:hidden;padding:28px 0 56px;background:var(--c-bg)}
.page-hero::before{
  content:"";position:absolute;right:-140px;top:-150px;width:440px;height:440px;
  border-radius:50%;border:1px solid rgba(29,78,137,.12);
}
.page-hero::after{
  content:"";position:absolute;left:-90px;bottom:-160px;width:340px;height:340px;
  border-radius:28px;background:rgba(18,179,168,.055);transform:rotate(16deg);
}
.page-hero > .container-x{position:relative;z-index:1}
@media(min-width:1024px){.page-hero{padding:36px 0 76px}}
.breadcrumb{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:14px;color:var(--t3)}
.breadcrumb a{color:var(--t3);transition:color .16s ease}
.breadcrumb a:hover{color:var(--c-primary)}
.crumb-sep{color:#b9c9da}
.hero-h1{font-size:28px;line-height:1.32;color:var(--t1);max-width:620px}
@media(min-width:768px){.hero-h1{font-size:36px}}
@media(min-width:1280px){.hero-h1{font-size:40px}}
.hero-h1-sub{display:block;margin-top:10px;font-size:.68em;font-weight:600;color:var(--c-primary)}
.hero-lead{margin-top:20px;font-size:17px;line-height:1.9;color:var(--t2);max-width:580px}
@media(min-width:768px){.hero-lead{font-size:18px}}
.hero-figure{
  position:relative;margin:0;aspect-ratio:16/11;border-radius:var(--r-xl);
  overflow:hidden;box-shadow:var(--s1);background:#e6eef7;
}
.hero-figure img{width:100%;height:100%;object-fit:cover}
.hero-badge{
  position:absolute;right:14px;bottom:14px;display:flex;align-items:center;gap:10px;
  padding:11px 15px;border-radius:14px;background:rgba(255,255,255,.95);
  box-shadow:var(--s1);font-size:13px;color:var(--t2);line-height:1.4;
}
.hero-badge strong{font-size:20px;font-weight:700;color:var(--c-primary)}
.stats-row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px 20px}
@media(min-width:768px){.stats-row{grid-template-columns:repeat(4,minmax(0,1fr))}}
.stat-num{font-size:22px;font-weight:700;color:var(--c-primary);line-height:1.2}
.stat-label{margin-top:6px;font-size:13.5px;color:var(--t3);line-height:1.6}

/* ============ section base ============ */
.section{padding:56px 0}
@media(min-width:768px){.section{padding:72px 0}}
@media(min-width:1024px){.section{padding:88px 0}}
.section-soft{background:var(--c-surface);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}
.section-eyebrow{display:inline-block;font-size:13px;font-weight:600;color:var(--c-accent-2)}
.section-title{margin-top:10px;font-size:22px;line-height:1.35;color:var(--t1)}
@media(min-width:768px){.section-title{font-size:28px}}
.section-desc{margin-top:14px;font-size:16px;line-height:1.9;color:var(--t2);max-width:720px}

/* ============ panel / lists ============ */
.panel{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:24px;box-shadow:var(--s1);
}
.panel-title{font-size:18px;font-weight:700;color:var(--t1)}
.check-list{margin-top:8px}
.check-list li{display:flex;align-items:flex-start;gap:10px;padding:12px 0;border-bottom:1px solid var(--c-line-soft);font-size:15px;line-height:1.85}
.check-list li:last-child{border-bottom:0;padding-bottom:2px}
.check-list svg{flex:none;margin-top:6px}
.dot-list{display:grid;gap:11px}
.dot-list li{position:relative;padding-left:19px;font-size:15.5px;line-height:1.85;color:var(--t2)}
.dot-list li::before{
  content:"";position:absolute;left:0;top:.72em;width:7px;height:7px;border-radius:50%;background:var(--c-primary);
}

/* ============ item rows ============ */
.fig-3x2{margin:0;aspect-ratio:3/2;border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--s1);background:#e6eef7}
.fig-3x2 img{width:100%;height:100%;object-fit:cover}
.num-badge{
  display:inline-flex;align-items:center;justify-content:center;min-width:46px;height:28px;
  padding:0 11px;border-radius:var(--pill);background:var(--c-primary-soft);
  color:var(--c-primary);font-size:13px;font-weight:700;
}
.item-title{font-size:20px;line-height:1.4;color:var(--t1)}
.item-desc{margin-top:14px;font-size:16px;line-height:1.9;color:var(--t2)}

/* ============ assure grid ============ */
.assure-grid{display:grid;border-top:1px solid var(--c-line);margin-top:40px}
.assure-item{padding:22px 0;border-bottom:1px solid var(--c-line-soft)}
.assure-item:last-child{border-bottom:0}
@media(min-width:768px){
  .assure-grid{grid-template-columns:repeat(2,minmax(0,1fr));column-gap:32px}
}
@media(min-width:1024px){
  .assure-grid{grid-template-columns:repeat(4,minmax(0,1fr));column-gap:0}
  .assure-item{padding:26px 26px 26px 26px;border-bottom:0;border-left:1px solid var(--c-line-soft)}
  .assure-item:first-child{border-left:0;padding-left:0}
}
.assure-idx{font-size:13px;font-weight:700;color:var(--c-accent-2)}
.assure-title{margin-top:10px;font-size:17px;font-weight:700;color:var(--t1)}
.assure-text{margin-top:10px;font-size:15px;line-height:1.85;color:var(--t2)}

/* ============ FAQ ============ */
.faq-item{
  position:relative;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-lg);margin-bottom:12px;box-shadow:var(--s1);
  transition:box-shadow .18s ease;
}
.faq-item:hover{box-shadow:var(--s2)}
.faq-item.is-open::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;
  border-radius:0 3px 3px 0;background:var(--c-primary);
}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  width:100%;min-height:56px;padding:17px 22px;background:transparent;border:0;
  text-align:left;font-size:16.5px;font-weight:600;color:var(--t1);cursor:pointer;
  border-radius:var(--r-lg);transition:color .16s ease;
}
.faq-q:hover{color:var(--c-primary)}
.faq-icon{position:relative;flex:none;width:20px;height:20px}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--c-primary);border-radius:2px;
  transform:translate(-50%,-50%);transition:transform .24s ease,opacity .24s ease;
}
.faq-icon::before{width:14px;height:2px}
.faq-icon::after{width:2px;height:14px}
.faq-item.is-open .faq-icon::after{transform:translate(-50%,-50%) scaleY(0);opacity:0}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .28s ease}
.faq-item.is-open .faq-a{grid-template-rows:1fr}
.faq-a-inner{overflow:hidden}
.faq-a-inner p{padding:0 22px 20px;font-size:15.5px;line-height:1.9;color:var(--t2)}

/* ============ CTA band ============ */
.cta-band{
  display:grid;gap:24px;align-items:center;
  background:var(--c-primary);border-radius:var(--r-xl);
  padding:32px 24px;color:#fff;
}
@media(min-width:768px){
  .cta-band{padding:44px 40px;grid-template-columns:minmax(0,1fr) auto;}
}
.cta-title{color:#fff;font-size:22px;line-height:1.35}
@media(min-width:768px){.cta-title{font-size:26px}}
.cta-desc{margin-top:12px;font-size:15.5px;line-height:1.85;color:rgba(255,255,255,.8);max-width:660px}

/* ============ footer ============ */
.site-footer{background:var(--c-primary-deep);color:#fff}
.footer-title{margin-bottom:16px;font-size:15px;font-weight:700;color:#fff}
.footer-link{display:block;padding:7px 0;font-size:14.5px;color:rgba(255,255,255,.72);transition:color .16s ease}
.footer-link:hover{color:var(--c-accent)}
.qr-box{
  width:88px;height:88px;border-radius:12px;flex:none;
  background:rgba(255,255,255,.10);border:1px dashed rgba(255,255,255,.28);
  display:flex;align-items:center;justify-content:center;text-align:center;
  font-size:12px;line-height:1.5;color:rgba(255,255,255,.62);
}

@media(prefers-reduced-motion:reduce){
  *{transition-duration:.01ms !important;animation-duration:.01ms !important}
  html{scroll-behavior:auto}
}

/* roulang page: category2 */
:root{
    --c-primary:#1D4E89;
    --c-primary-deep:#12365F;
    --c-primary-soft:#E8F1FA;
    --c-accent:#FF7A29;
    --c-accent-2:#12B3A8;
    --c-bg:#F6F9FC;
    --c-surface:#FFFFFF;
    --c-line:#DCE6F1;
    --c-line-soft:#EDF3F9;
    --t1:#0F2136;
    --t2:#4A6382;
    --t3:#8698AC;
    --ok:#1F9D6B;
    --danger:#D6455B;
    --r-sm:8px;
    --r-md:12px;
    --r-lg:16px;
    --r-xl:24px;
    --s1:0 1px 2px rgba(15,33,54,.04), 0 6px 18px rgba(15,33,54,.06);
    --s2:0 12px 32px rgba(15,33,54,.10);
    --ease:cubic-bezier(.22,.61,.36,1);
  }
  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
  body{
    margin:0;
    background:var(--c-bg);
    color:var(--t2);
    font-family:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;
    font-size:16px;
    line-height:1.9;
    font-variant-numeric:tabular-nums;
  }
  h1,h2,h3,h4{margin:0;color:var(--t1);font-weight:700;line-height:1.32;letter-spacing:0}
  p{margin:0}
  a{color:inherit;text-decoration:none}
  img{max-width:100%;display:block}
  button,input,textarea,select{font:inherit;color:inherit}
  ul,ol{margin:0;padding:0;list-style:none}
  :focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}
  body.is-locked{overflow:hidden}

  .container-x{width:100%;max-width:1200px;margin-inline:auto;padding-inline:16px}
  @media (min-width:768px){.container-x{padding-inline:24px}}
  @media (min-width:1024px){.container-x{padding-inline:32px}}

  .section{padding-block:48px}
  @media (min-width:768px){.section{padding-block:64px}}
  @media (min-width:1024px){.section{padding-block:88px}}

  /* ---------- 导航 ---------- */
  .site-header{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--c-line);transition:box-shadow .18s var(--ease)}
  .site-header.is-scrolled{box-shadow:var(--s1)}
  .nav-grid{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:16px;height:72px}
  @media (max-width:1023px){.nav-grid{grid-template-columns:auto 1fr auto;height:56px;gap:8px}}
  .nav-list{display:flex;align-items:center;gap:4px}
  .nav-list.right{justify-self:end}
  .nav-link{
    position:relative;
    display:inline-flex;align-items:center;
    height:44px;padding:0 12px;border-radius:10px;
    font-size:14.5px;font-weight:500;color:var(--t2);
    transition:color .16s var(--ease),background-color .16s var(--ease);
  }
  .nav-link:hover{color:var(--c-primary);background:var(--c-primary-soft)}
  .nav-link.is-active{color:var(--c-primary);font-weight:700}
  .nav-link.is-active::after{content:"";position:absolute;left:12px;right:12px;bottom:5px;height:2px;border-radius:2px;background:var(--c-primary)}
  .brand{display:inline-flex;align-items:center;gap:10px;justify-self:center}
  .brand-mark{width:34px;height:34px;flex:none}
  .brand-name{font-size:15.5px;font-weight:700;color:var(--t1);white-space:nowrap}
  @media (max-width:1023px){.brand-name{font-size:13.5px}}
  @media (max-width:420px){.brand-mark{width:28px;height:28px}.brand-name{font-size:12px}}
  .burger{
    display:inline-flex;align-items:center;justify-content:center;
    width:44px;height:44px;border:1px solid var(--c-line);border-radius:12px;background:#fff;cursor:pointer;
  }
  .burger span{position:relative;display:block;width:18px;height:2px;border-radius:2px;background:var(--t1)}
  .burger span::before,.burger span::after{content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--t1)}
  .burger span::before{top:-6px}
  .burger span::after{top:6px}

  .drawer{position:fixed;inset:0;z-index:70;display:none;flex-direction:column;background:#fff;box-shadow:var(--s2)}
  .drawer.is-open{display:flex}
  .drawer-top{display:flex;align-items:center;justify-content:space-between;height:56px;padding:0 16px;border-bottom:1px solid var(--c-line)}
  .drawer-close{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border:1px solid var(--c-line);border-radius:12px;background:#fff;cursor:pointer}
  .drawer-body{padding:16px;overflow-y:auto}
  .drawer-link{display:flex;align-items:center;justify-content:space-between;min-height:52px;padding:0 14px;border-bottom:1px solid var(--c-line-soft);font-size:16px;font-weight:500;color:var(--t1)}
  .drawer-link:hover{color:var(--c-primary)}
  .drawer-link.is-active{color:var(--c-primary);font-weight:700}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:48px;padding:0 22px;
    border:1px solid transparent;border-radius:12px;
    font-size:15px;font-weight:600;cursor:pointer;
    transition:transform .16s var(--ease),box-shadow .16s var(--ease),background-color .16s var(--ease),color .16s var(--ease),border-color .16s var(--ease);
  }
  .btn-primary{background:var(--c-accent);color:#fff;box-shadow:var(--s1)}
  .btn-primary:hover{background:#E86A1C;box-shadow:var(--s2);transform:translateY(-1px)}
  .btn-primary:active{background:#D25C13;transform:translateY(0)}
  .btn-outline{border-color:var(--c-primary);color:var(--c-primary);background:#fff}
  .btn-outline:hover{background:var(--c-primary-soft);box-shadow:var(--s1);transform:translateY(-1px)}
  .btn-sm{height:44px;padding:0 18px;font-size:14px;border-radius:10px}
  .btn-ghost{height:44px;padding:0 4px;color:var(--c-primary);font-weight:600;background:none;border:0;cursor:pointer}
  .btn-ghost:hover{text-decoration:underline;text-underline-offset:4px}

  /* ---------- 通用组件 ---------- */
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    padding:6px 14px;border-radius:999px;
    font-size:12px;font-weight:600;color:var(--c-primary);
    background:var(--c-primary-soft);
  }
  .h1-page{font-size:28px;line-height:1.35}
  @media (min-width:768px){.h1-page{font-size:36px}}
  .h2-sec{font-size:22px;line-height:1.35}
  @media (min-width:768px){.h2-sec{font-size:28px}}
  .h3-card{font-size:18px;line-height:1.45}
  @media (min-width:768px){.h3-card{font-size:20px}}
  .lead{font-size:17px;line-height:1.9}
  @media (min-width:768px){.lead{font-size:18px}}
  .crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--t3)}
  .crumbs a:hover{color:var(--c-primary)}
  .crumbs .sep{color:#B9C8D8}
  .dot-list li{position:relative;padding-left:20px;font-size:15.5px;line-height:1.9}
  .dot-list li::before{content:"";position:absolute;left:0;top:.82em;width:8px;height:8px;border-radius:50%;background:var(--c-primary)}
  .check-list li{position:relative;padding-left:28px;font-size:15px;line-height:1.85;color:var(--t2)}
  .check-list li::before{
    content:"";position:absolute;left:0;top:.35em;width:16px;height:16px;border-radius:50%;
    background:var(--c-primary-soft) url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'><path d='M4 8.4l2.6 2.6L12 5.4' fill='none' stroke='%231D4E89' stroke-width='1.9' stroke-linecap='round' stroke-linejoin='round'/></svg>") center/12px 12px no-repeat;
  }
  .tag-pill{display:inline-flex;align-items:center;padding:5px 12px;border-radius:999px;font-size:12px;font-weight:600;color:var(--c-primary);background:var(--c-primary-soft)}
  .tag-pill.accent{background:#FFF0E5;color:#C85510}
  .tag-pill.teal{background:#E3F7F5;color:#0B8078}

  /* ---------- Hero ---------- */
  .hero-center{position:relative;overflow:hidden;background:#fff;border-bottom:1px solid var(--c-line)}
  .hero-center::before{
    content:"";position:absolute;top:-140px;right:-100px;width:380px;height:380px;border-radius:50%;
    border:1px solid rgba(29,78,137,.10);opacity:.9;pointer-events:none;
  }
  .hero-center::after{
    content:"";position:absolute;left:-120px;bottom:-160px;width:320px;height:320px;border-radius:50%;
    background:rgba(18,179,168,.05);pointer-events:none;
  }
  .hero-inner{position:relative;z-index:1}
  .metric-row{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;max-width:780px;margin-inline:auto}
  .metric-num{font-size:30px;font-weight:700;line-height:1.15;color:var(--c-accent-2)}
  @media (min-width:768px){.metric-num{font-size:38px}}
  .metric-label{margin-top:6px;font-size:13.5px;line-height:1.7;color:var(--t2)}

  /* ---------- 图文模块 ---------- */
  .figure-box{border-radius:var(--r-xl);overflow:hidden;box-shadow:var(--s1);background:#fff}
  .figure-box img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3}
  .module-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);padding:22px;box-shadow:var(--s1);transition:box-shadow .18s var(--ease),transform .18s var(--ease)}
  .module-card:hover{box-shadow:var(--s2);transform:translateY(-2px)}

  /* ---------- 规格对比表 ---------- */
  .table-scroll{overflow-x:auto;border:1px solid var(--c-line);border-radius:var(--r-lg);background:#fff;box-shadow:var(--s1);-webkit-overflow-scrolling:touch}
  .spec-table{width:100%;min-width:940px;border-collapse:separate;border-spacing:0}
  .spec-table th{
    background:var(--c-primary-soft);color:var(--c-primary-deep);
    font-size:13.5px;font-weight:700;text-align:left;
    padding:15px 18px;white-space:nowrap;
    border-bottom:1px solid var(--c-line);
  }
  .spec-table th:first-child{position:sticky;left:0;z-index:2;border-top-left-radius:15px}
  .spec-table th:last-child{border-top-right-radius:15px}
  .spec-table td{
    padding:16px 18px;font-size:14.5px;line-height:1.75;color:var(--t2);
    border-bottom:1px solid var(--c-line-soft);vertical-align:top;
  }
  .spec-table tbody tr{transition:background-color .16s var(--ease)}
  .spec-table tbody tr:hover{background:#F8FBFE}
  .spec-table td:first-child{
    position:sticky;left:0;z-index:1;background:#fff;
    color:var(--t1);font-weight:600;box-shadow:1px 0 0 var(--c-line-soft);
  }
  .spec-table tbody tr:hover td:first-child{background:#F8FBFE}
  .spec-table tbody tr:last-child td{border-bottom:0}

  /* ---------- 流程时间线 ---------- */
  .timeline{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
  .timeline::before{content:"";position:absolute;left:24px;right:24px;top:24px;height:2px;background:var(--c-line)}
  .tl-item{position:relative;padding-top:72px}
  .tl-num{
    position:absolute;top:0;left:0;z-index:1;
    display:flex;align-items:center;justify-content:center;
    width:48px;height:48px;border-radius:999px;
    background:#fff;border:2px solid var(--c-accent-2);color:var(--c-accent-2);
    font-size:15px;font-weight:700;
  }
  .tl-item p{margin-top:8px;font-size:15px;line-height:1.88}
  @media (max-width:767px){
    .timeline{grid-template-columns:1fr;gap:0}
    .timeline::before{left:23px;right:auto;top:24px;bottom:24px;width:2px;height:auto}
    .tl-item{padding:0 0 26px 70px}
    .tl-item:last-child{padding-bottom:0}
  }

  /* ---------- FAQ ---------- */
  .faq-list{display:grid;gap:14px;max-width:880px;margin-inline:auto}
  .faq-item{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);transition:box-shadow .18s var(--ease)}
  .faq-item:hover{box-shadow:var(--s1)}
  .faq-item.is-open{box-shadow:inset 3px 0 0 0 var(--c-primary),var(--s1)}
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
    min-height:56px;padding:18px 22px;background:none;border:0;text-align:left;cursor:pointer;
    font-size:16px;font-weight:600;color:var(--t1);line-height:1.6;
  }
  .faq-icon{position:relative;flex:none;width:20px;height:20px}
  .faq-icon::before,.faq-icon::after{content:"";position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);background:var(--c-primary);border-radius:2px;transition:transform .2s var(--ease),opacity .2s var(--ease)}
  .faq-icon::before{width:14px;height:2px}
  .faq-icon::after{width:2px;height:14px}
  .faq-q[aria-expanded="true"] .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0}
  .faq-a{padding:0 22px 22px;font-size:15.5px;line-height:1.9;color:var(--t2)}

  /* ---------- CTA 横幅 ---------- */
  .cta-band{
    display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
    background:var(--c-primary);border-radius:var(--r-xl);padding:32px;
  }
  @media (min-width:768px){.cta-band{padding:40px 44px}}
  .cta-band h2{color:#fff}
  .cta-band p{color:rgba(255,255,255,.82);margin-top:10px;font-size:15.5px;line-height:1.85}

  /* ---------- 表单 ---------- */
  .form-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-xl);padding:24px;box-shadow:var(--s1)}
  @media (min-width:768px){.form-card{padding:32px}}
  .field label{display:block;margin-bottom:8px;font-size:14px;font-weight:600;color:var(--t1)}
  .field input,.field textarea{
    width:100%;min-height:44px;padding:10px 14px;
    border:1px solid var(--c-line);border-radius:10px;background:#fff;
    font-size:15px;color:var(--t1);line-height:1.7;
    transition:border-color .16s var(--ease),box-shadow .16s var(--ease);
  }
  .field textarea{min-height:124px;resize:vertical}
  .field input:focus,.field textarea:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 4px rgba(29,78,137,.2)}
  .field input::placeholder,.field textarea::placeholder{color:#A9B8C8}
  .notice{margin-bottom:18px;padding:12px 16px;border-radius:10px;font-size:14.5px;line-height:1.75}
  .notice-ok{background:#E9F7F1;color:#16714D;border:1px solid #BFE7D6}
  .notice-err{background:#FDECEF;color:#A3283B;border:1px solid #F5C6CE}

  /* ---------- 页脚 ---------- */
  .site-footer{background:var(--c-primary-deep);color:#fff;margin-top:88px}
  .footer-title{margin:0 0 14px;font-size:14px;font-weight:700;color:#fff;letter-spacing:.02em}
  .footer-link{display:block;padding:6px 0;font-size:14.5px;color:rgba(255,255,255,.72);transition:color .16s var(--ease)}
  .footer-link:hover{color:var(--c-accent)}
  .qr-box{
    display:flex;align-items:center;justify-content:center;text-align:center;
    width:88px;height:88px;border-radius:12px;
    border:1px dashed rgba(255,255,255,.35);background:rgba(255,255,255,.06);
    font-size:12px;line-height:1.5;color:rgba(255,255,255,.62);
  }

  @media (prefers-reduced-motion:reduce){
    *{transition:none !important;animation:none !important}
    html{scroll-behavior:auto}
  }