/* roulang page: index */
/* ============ 设计变量 ============ */
:root{
  --c-primary:#0F5C8C;
  --c-primary-dark:#0A3F62;
  --c-primary-light:#E7F0F7;
  --c-accent:#F05A28;
  --c-accent-dark:#D64716;
  --c-accent-2:#12B5A4;
  --c-bg:#F4F7FA;
  --c-surface:#FFFFFF;
  --c-dark:#0A2233;
  --c-ink:#132433;
  --c-ink-2:#54697C;
  --c-ink-3:#8C9CAB;
  --c-line:#E2E9F0;

  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --r-pill:999px;

  --sh-1:0 1px 2px rgba(13,42,64,.06);
  --sh-2:0 8px 24px -8px rgba(13,42,64,.14);

  --container:1200px;
  --gutter:32px;

  --sp-4:4px; --sp-8:8px; --sp-12:12px; --sp-16:16px;
  --sp-24:24px; --sp-32:32px; --sp-48:48px; --sp-64:64px; --sp-96:96px;

  --f-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --f-num:Inter,system-ui,-apple-system,"Segoe UI",sans-serif;
}

/* ============ 基础重置 ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--f-sans);
  font-size:16px;
  line-height:1.85;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease-out;}
a:hover{color:var(--c-primary-dark);}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0;}
ul,ol{list-style:none;}
button,input,textarea,select{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}
.num,.stat-num{font-family:var(--f-num);font-variant-numeric:tabular-nums;}

/* ============ 容器 ============ */
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding-left:var(--gutter);
  padding-right:var(--gutter);
}
.page-main{padding-bottom:var(--sp-64);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 24px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:500;
  letter-spacing:.2px;
  white-space:nowrap;
  transition:background-color .2s ease-out,color .2s ease-out,border-color .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out;
}
.btn:active{transform:translateY(1px);}
.btn-primary{background:var(--c-accent);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--c-accent-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-outline{background:#fff;color:var(--c-ink);border:1px solid var(--c-line);}
.btn-outline:hover{background:var(--c-primary-light);color:var(--c-primary-dark);border-color:#BFD6E6;}
.btn-ghost{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.5);}
.btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff;}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-block{width:100%;}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:500;color:var(--c-primary);
}
.btn-link::after{content:"";width:14px;height:1px;background:currentColor;transition:width .2s ease-out;}
.btn-link:hover::after{width:22px;}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;
  height:24px;padding:0 10px;
  border-radius:var(--r-pill);
  font-size:12px;font-weight:500;line-height:1;
  background:var(--c-primary-light);color:var(--c-primary-dark);
}
.badge-accent{background:rgba(240,90,40,.1);color:var(--c-accent-dark);}
.badge-teal{background:rgba(18,181,164,.12);color:#0B8377;}
.pill{
  display:inline-flex;align-items:center;
  height:32px;padding:0 16px;
  border-radius:var(--r-pill);
  border:1px solid var(--c-line);
  background:#fff;color:var(--c-ink-2);
  font-size:14px;
  transition:all .2s ease-out;
}
.pill:hover,.pill.is-active{background:var(--c-primary);border-color:var(--c-primary);color:#fff;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(244,247,250,.96);
  border-bottom:1px solid transparent;
  transition:background-color .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.site-header.is-scrolled{
  background:#fff;
  border-bottom-color:var(--c-line);
  box-shadow:0 1px 2px rgba(13,42,64,.06);
}
.header-inner{
  height:64px;
  display:flex;align-items:center;justify-content:space-between;gap:var(--sp-24);
}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:28px;height:28px;flex:0 0 28px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:9px;background:var(--c-primary);color:#fff;
}
.brand-mark svg{width:17px;height:17px;}
.brand-text{
  font-size:18px;font-weight:700;color:var(--c-ink);
  letter-spacing:0;white-space:nowrap;
}
.brand:hover .brand-text{color:var(--c-primary-dark);}
.main-nav{display:flex;align-items:center;gap:var(--sp-4);}
.nav-link{
  position:relative;
  display:inline-block;
  padding:8px 14px;
  font-size:15px;color:var(--c-ink-2);
  border-radius:8px;
  transition:color .2s ease-out,background-color .2s ease-out;
}
.nav-link:hover{color:var(--c-ink);background:rgba(15,92,140,.06);}
.nav-link.is-active{color:var(--c-primary);font-weight:500;}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:0;
  height:2px;background:var(--c-accent);border-radius:2px;
}
.header-actions{display:flex;align-items:center;gap:var(--sp-12);}
.nav-toggle{
  display:none;
  width:40px;height:40px;border-radius:10px;
  align-items:center;justify-content:center;
  border:1px solid var(--c-line);background:#fff;color:var(--c-ink);
}
.nav-toggle:hover{background:var(--c-primary-light);color:var(--c-primary-dark);}

/* 移动端抽屉 */
.drawer{
  display:none;
  position:fixed;inset:64px 0 0 0;z-index:80;
  background:#fff;
  padding:var(--sp-24) var(--gutter) 96px;
  overflow-y:auto;
}
.drawer.is-open{display:block;}
.drawer-list{display:flex;flex-direction:column;}
.drawer-list a{
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 4px;
  font-size:17px;color:var(--c-ink);
  border-bottom:1px solid var(--c-line);
}
.drawer-list a:hover{color:var(--c-primary);}
.drawer-list a.is-active{color:var(--c-primary);font-weight:500;}
.drawer-list a span.arrow{color:var(--c-ink-3);font-size:20px;line-height:1;}
.drawer-cta{margin-top:var(--sp-24);}

/* ============ Hero ============ */
.hero{
  position:relative;
  background:linear-gradient(180deg,#EAF2F8 0%,#F4F7FA 100%);
  overflow:hidden;
}
.hero-bg{
  position:absolute;top:-120px;right:-140px;
  width:640px;height:520px;
  background:var(--c-primary);
  opacity:.05;
  transform:rotate(-14deg);
  border-radius:64px;
  pointer-events:none;
}
.hero-inner{
  position:relative;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:var(--sp-48);
  align-items:center;
  min-height:520px;
  padding-top:var(--sp-64);
  padding-bottom:var(--sp-64);
}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  height:28px;padding:0 14px;
  border-radius:var(--r-pill);
  background:#fff;color:var(--c-primary-dark);
  font-size:13px;font-weight:500;
  box-shadow:var(--sh-1);
  margin-bottom:var(--sp-24);
}
.hero-eyebrow::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--c-accent);
}
.hero-title{
  font-size:clamp(28px,4.4vw,44px);
  line-height:1.25;
  font-weight:700;
  letter-spacing:0;
  color:var(--c-ink);
  margin-bottom:var(--sp-16);
}
.hero-sub{
  font-size:17px;
  line-height:1.7;
  color:var(--c-ink-2);
  max-width:520px;
  margin-bottom:var(--sp-32);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:var(--sp-12);margin-bottom:var(--sp-32);}
.hero-stats{display:flex;flex-wrap:wrap;gap:var(--sp-32);}
.hero-stats li{display:flex;flex-direction:column;gap:2px;}
.hero-stats strong{
  font-family:var(--f-num);
  font-variant-numeric:tabular-nums;
  font-size:26px;font-weight:700;line-height:1.2;
  color:var(--c-accent);
}
.hero-stats span{font-size:13px;color:var(--c-ink-2);}
.hero-media{position:relative;}
.hero-media img{
  width:100%;height:360px;
  object-fit:cover;
  border-radius:16px;
  box-shadow:var(--sh-2);
}
.hero-media-tag{
  position:absolute;left:16px;bottom:16px;
  display:inline-flex;align-items:center;
  height:34px;padding:0 14px;
  border-radius:var(--r-pill);
  background:rgba(10,34,51,.82);
  color:#fff;font-size:13px;
}

/* ============ 区块通用 ============ */
.section{padding:var(--sp-96) 0 0;}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:var(--sp-24);
  margin-bottom:var(--sp-32);
}
.section-head h2{
  font-size:clamp(22px,3vw,32px);
  line-height:1.35;
  font-weight:700;
  color:var(--c-ink);
}
.section-desc{
  margin-top:var(--sp-8);
  font-size:15px;color:var(--c-ink-2);
  max-width:660px;
}
.section-kicker{
  display:block;
  font-size:13px;font-weight:500;
  color:var(--c-accent);
  letter-spacing:1px;
  margin-bottom:var(--sp-8);
}

/* ============ 合集目录 ============ */
.catalog-grid{
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:0 var(--sp-48);
  border-top:1px solid var(--c-line);
}
.catalog-item{
  display:flex;align-items:flex-start;gap:var(--sp-16);
  padding:var(--sp-24) var(--sp-16);
  border-bottom:1px solid var(--c-line);
  transition:background-color .2s ease-out;
}
.catalog-item:hover{background:var(--c-primary-light);}
.catalog-num{
  font-family:var(--f-num);
  font-variant-numeric:tabular-nums;
  font-size:14px;font-weight:700;
  color:var(--c-accent);
  padding-top:4px;
  min-width:28px;
}
.catalog-body{flex:1;min-width:0;}
.catalog-body h3{
  font-size:18px;font-weight:500;line-height:1.5;
  color:var(--c-ink);
  margin-bottom:var(--sp-4);
}
.catalog-item:hover .catalog-body h3{color:var(--c-primary-dark);}
.catalog-body p{font-size:14px;line-height:1.7;color:var(--c-ink-2);}
.catalog-arrow{
  color:var(--c-ink-3);font-size:18px;line-height:1;
  padding-top:4px;
  transition:transform .2s ease-out,color .2s ease-out;
}
.catalog-item:hover .catalog-arrow{transform:translateX(4px);color:var(--c-primary);}

/* ============ 精选条目 ============ */
.featured-grid{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  gap:var(--sp-24);
}
.feature-card{
  grid-column:span 6;
  display:flex;flex-direction:column;
  background:var(--c-surface);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  overflow:hidden;
  transition:box-shadow .22s ease-out,transform .22s ease-out;
}
.feature-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px);}
.feature-card.wide{grid-column:span 7;}
.feature-card.narrow{grid-column:span 5;}
.feature-media{position:relative;overflow:hidden;aspect-ratio:16/9;background:var(--c-primary-light);}
.feature-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out;}
.feature-card:hover .feature-media img{transform:scale(1.03);}
.feature-badge{position:absolute;left:16px;top:16px;}
.feature-body{padding:var(--sp-24);display:flex;flex-direction:column;gap:var(--sp-12);flex:1;}
.feature-body h3{font-size:19px;font-weight:500;line-height:1.5;color:var(--c-ink);}
.feature-card:hover .feature-body h3{color:var(--c-primary-dark);}
.feature-body p{
  font-size:14px;line-height:1.8;color:var(--c-ink-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.feature-meta{
  margin-top:auto;
  display:flex;align-items:center;justify-content:space-between;gap:var(--sp-12);
  padding-top:var(--sp-12);
  border-top:1px solid var(--c-line);
  font-size:13px;color:var(--c-ink-3);
}

/* ============ 最新信息列表（CMS） ============ */
.list-slot{border-top:1px solid var(--c-line);}
.news-item{
  display:flex;gap:var(--sp-24);
  padding:var(--sp-24) 0;
  border-bottom:1px solid var(--c-line);
  transition:background-color .2s ease-out;
}
.news-thumb{
  flex:0 0 96px;width:96px;height:96px;
  border-radius:var(--r-img);
  overflow:hidden;
  background:var(--c-primary-light);
}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out;}
.news-item:hover .news-thumb img{transform:scale(1.03);}
.news-main{flex:1;min-width:0;display:flex;flex-direction:column;gap:var(--sp-8);}
.news-title{
  font-size:18px;font-weight:500;line-height:1.5;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.news-title a{color:var(--c-ink);}
.news-title a:hover{color:var(--c-primary);}
.news-summary{
  font-size:14px;line-height:1.75;color:var(--c-ink-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-summary:empty{display:none;}
.news-meta{
  margin-top:auto;
  display:flex;align-items:center;flex-wrap:wrap;gap:var(--sp-12);
  font-size:13px;color:var(--c-ink-3);
}
.news-meta .meta-link{
  margin-left:auto;
  font-size:13px;font-weight:500;color:var(--c-primary);
}
.news-meta .meta-link:hover{color:var(--c-accent-dark);}
.news-empty{
  display:flex;flex-direction:column;align-items:center;gap:var(--sp-12);
  padding:var(--sp-64) var(--sp-16);
  border-bottom:1px solid var(--c-line);
  text-align:center;
}
.news-empty svg{width:40px;height:40px;color:var(--c-ink-3);}
.news-empty p{font-size:14px;color:var(--c-ink-2);}

/* ============ 相关推荐卡带 ============ */
.rail-wrap{
  position:relative;
  margin:0 calc(var(--gutter) * -1);
  padding:0 var(--gutter);
}
.rail{
  display:flex;
  gap:var(--sp-24);
  overflow-x:auto;
  scroll-snap-type:x mandatory;
  overscroll-behavior:contain;
  padding-bottom:var(--sp-12);
  scrollbar-width:thin;
}
.rail::-webkit-scrollbar{height:6px;}
.rail::-webkit-scrollbar-thumb{background:#CBD9E4;border-radius:6px;}
.rail::-webkit-scrollbar-track{background:transparent;}
.rail-card{
  flex:0 0 340px;
  height:260px;
  scroll-snap-align:start;
  display:flex;flex-direction:column;justify-content:flex-end;
  position:relative;
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:box-shadow .22s ease-out,transform .22s ease-out;
}
.rail-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px);}
.rail-card img{
  position:absolute;inset:0;width:100%;height:100%;
  object-fit:cover;z-index:0;
  transition:transform .3s ease-out;
}
.rail-card:hover img{transform:scale(1.03);}
.rail-card::after{
  content:"";position:absolute;inset:0;z-index:1;
  background:linear-gradient(180deg,rgba(10,34,51,0) 30%,rgba(10,34,51,.86) 100%);
}
.rail-body{position:relative;z-index:2;padding:var(--sp-24);}
.rail-body h3{
  font-size:17px;font-weight:500;line-height:1.5;color:#fff;
  margin-bottom:var(--sp-8);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rail-body span{font-size:13px;color:rgba(255,255,255,.72);}

/* ============ 深色 CTA 带 ============ */
.cta-band{
  margin-top:var(--sp-96);
  background:var(--c-dark);
  border-radius:0;
}
.cta-inner{
  display:flex;align-items:center;justify-content:space-between;gap:var(--sp-32);
  padding:var(--sp-64) 0;
  flex-wrap:wrap;
}
.cta-copy h2{
  font-size:clamp(22px,2.6vw,28px);
  font-weight:700;line-height:1.35;color:#fff;
  margin-bottom:var(--sp-8);
}
.cta-copy p{font-size:15px;color:rgba(255,255,255,.7);max-width:520px;}
.cta-actions{display:flex;align-items:center;gap:var(--sp-12);flex-wrap:wrap;}
.share-group{display:flex;align-items:center;gap:12px;margin-left:var(--sp-12);}
.share-btn{
  width:36px;height:36px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid rgba(255,255,255,.42);
  color:#fff;
  transition:background-color .2s ease-out,border-color .2s ease-out,color .2s ease-out;
}
.share-btn svg{width:16px;height:16px;}
.share-btn:hover{background:#fff;border-color:#fff;color:var(--c-dark);}

/* ============ FAQ ============ */
.faq-wrap{max-width:880px;}
.accordion.faq-acc{
  border:0;background:transparent;
}
.faq-acc .accordion-item{
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  background:#fff;
  margin-bottom:var(--sp-12);
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:box-shadow .2s ease-out;
}
.faq-acc .accordion-item.is-active{box-shadow:var(--sh-2);}
.faq-acc .accordion-title{
  position:relative;
  display:block;
  padding:18px 56px 18px 20px;
  font-size:16px;font-weight:600;line-height:1.6;
  color:var(--c-ink);
  border:0;
  background:transparent;
}
.faq-acc .accordion-title:hover,
.faq-acc .accordion-title:focus{
  background:var(--c-primary-light);
  color:var(--c-primary-dark);
}
.faq-acc .accordion-title::before{
  content:"";
  position:absolute;left:0;top:12px;bottom:12px;
  width:3px;border-radius:0 3px 3px 0;
  background:var(--c-primary);
  opacity:0;
  transition:opacity .2s ease-out;
}
.faq-acc .accordion-item.is-active .accordion-title::before{opacity:1;}
.faq-acc .accordion-title::after{
  content:"";
  position:absolute;right:22px;top:50%;
  width:12px;height:12px;
  margin-top:-7px;
  border-right:2px solid var(--c-ink-3);
  border-bottom:2px solid var(--c-ink-3);
  transform:rotate(45deg);
  transition:transform .2s ease-out,border-color .2s ease-out;
}
.faq-acc .accordion-item.is-active .accordion-title::after{
  transform:rotate(-135deg);
  border-color:var(--c-primary);
}
.faq-acc .accordion-content{
  padding:0 20px 20px 20px;
  border:0;
  background:transparent;
  font-size:15px;line-height:1.8;color:var(--c-ink-2);
}
.faq-acc .accordion-content p{font-size:15px;line-height:1.8;color:var(--c-ink-2);}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:var(--sp-96);
  background:var(--c-dark);
  color:rgba(255,255,255,.72);
  font-size:14px;
  line-height:2;
}
.footer-top{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:var(--sp-48);
  padding:var(--sp-64) 0 var(--sp-48);
}
.footer-brand .brand{gap:10px;margin-bottom:var(--sp-16);}
.footer-brand .brand-mark{background:var(--c-accent);}
.footer-brand .brand-text{color:#fff;font-size:17px;}
.footer-brand p{font-size:14px;line-height:1.9;color:rgba(255,255,255,.6);max-width:320px;}
.footer-col h4{
  font-size:14px;font-weight:700;color:#fff;
  letter-spacing:.5px;
  margin-bottom:var(--sp-16);
}
.footer-col ul{display:flex;flex-direction:column;gap:2px;}
.footer-col a{color:rgba(255,255,255,.68);font-size:14px;}
.footer-col a:hover{color:#fff;}
.footer-col li span{color:rgba(255,255,255,.68);font-size:14px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:var(--sp-24) 0 var(--sp-32);
  display:flex;align-items:center;justify-content:space-between;
  gap:var(--sp-16);flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ============ 移动端底部 Tab ============ */
.mobile-tab{
  display:none;
  position:fixed;left:0;right:0;bottom:0;z-index:90;
  height:56px;
  background:#fff;
  border-top:1px solid var(--c-line);
  padding-bottom:env(safe-area-inset-bottom);
  box-shadow:0 -2px 12px rgba(13,42,64,.06);
}
.mobile-tab .tab-inner{
  display:flex;height:56px;
}
.tab-item{
  flex:1;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  font-size:11px;
  color:var(--c-ink-3);
  transition:color .2s ease-out;
}
.tab-item svg{width:21px;height:21px;stroke-width:1.75;color:currentColor;}
.tab-item:hover{color:var(--c-primary);}
.tab-item.is-active{color:var(--c-primary);}
.tab-item.is-active svg{color:var(--c-primary);}
.tab-item.is-active svg .fillable{fill:currentColor;}
body{padding-bottom:72px;}

/* ============ 响应式 ============ */
@media screen and (max-width:1199px){
  :root{--gutter:24px;}
  .header-inner{gap:var(--sp-16);}
  .nav-link{padding:8px 10px;font-size:14px;}
}

@media screen and (max-width:1023px){
  .main-nav{display:none;}
  .header-actions .btn-primary{display:none;}
  .nav-toggle{display:inline-flex;}
  .hero-inner{
    grid-template-columns:1fr;
    gap:var(--sp-32);
    min-height:auto;
    padding-top:var(--sp-48);
    padding-bottom:var(--sp-48);
  }
  .hero-media img{height:280px;}
  .catalog-grid{grid-template-columns:1fr;}
  .feature-card,.feature-card.wide,.feature-card.narrow{grid-column:span 6;}
  .footer-top{grid-template-columns:1fr 1fr;gap:var(--sp-32);}
  .mobile-tab{display:block;}
  .section{padding:var(--sp-64) 0 0;}
  .cta-band{margin-top:var(--sp-64);}
  .site-footer{margin-top:var(--sp-64);}
}

@media screen and (max-width:767px){
  :root{--gutter:16px;}
  .hero-title{font-size:clamp(26px,7.4vw,34px);}
  .hero-sub{font-size:16px;}
  .hero-actions{gap:10px;}
  .hero-actions .btn{flex:1 1 auto;min-width:140px;}
  .hero-stats{gap:var(--sp-24);}
  .hero-stats strong{font-size:22px;}
  .feature-card,.feature-card.wide,.feature-card.narrow{grid-column:span 12;}
  .featured-grid{gap:var(--sp-16);}
  .news-item{gap:var(--sp-16);padding:var(--sp-16) 0;}
  .news-thumb{flex:0 0 80px;width:80px;height:80px;}
  .news-title{font-size:16px;}
  .news-summary{-webkit-line-clamp:2;}
  .news-meta{gap:8px;}
  .news-meta .meta-link{margin-left:0;width:100%;}
  .rail-card{flex:0 0 78%;height:220px;}
  .cta-inner{padding:var(--sp-48) 0;flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
  .share-group{margin-left:0;}
  .footer-top{grid-template-columns:1fr;gap:var(--sp-32);padding:var(--sp-48) 0 var(--sp-32);}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:var(--sp-12);}
  .catalog-item{padding:var(--sp-16) 8px;gap:var(--sp-12);}
  .catalog-num{font-size:12px;min-width:22px;}
  .catalog-body h3{font-size:16px;}
  .accordion-title{font-size:15px;}
}

@media screen and (max-width:519px){
  .hero-media img{height:220px;}
  .hero-eyebrow{font-size:12px;}
  .brand-text{font-size:16px;}
  .drawer-list a{font-size:16px;}
}

/* roulang page: article */
/* =========================================================
   设计变量
   ========================================================= */
:root{
  --c-primary:#0F5C8C;
  --c-primary-dark:#0A3F62;
  --c-primary-light:#E7F0F7;
  --c-accent:#F05A28;
  --c-accent-dark:#D64A1C;
  --c-accent-2:#12B5A4;
  --c-bg:#F4F7FA;
  --c-surface:#FFFFFF;
  --c-dark:#0A2233;
  --c-ink:#132433;
  --c-ink-2:#54697C;
  --c-ink-3:#8C9CAB;
  --c-line:#E2E9F0;

  --sh-1:0 1px 2px rgba(13,42,64,.06);
  --sh-2:0 8px 24px -8px rgba(13,42,64,.14);

  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --r-pill:999px;

  --sp-4:4px;
  --sp-8:8px;
  --sp-12:12px;
  --sp-16:16px;
  --sp-24:24px;
  --sp-32:32px;
  --sp-48:48px;
  --sp-64:64px;
  --sp-96:96px;

  --container:1200px;
  --header-h:64px;
  --tabbar-h:56px;
}

/* =========================================================
   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(--c-ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body, input, button, select, textarea{
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
p{line-height:1.85;}
table{border-collapse:collapse;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px;}
::selection{background:var(--c-primary-light);color:var(--c-primary-dark);}

/* =========================================================
   容器与排版
   ========================================================= */
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding-left:32px;
  padding-right:32px;
}
.h1{
  font-size:clamp(28px,4.4vw,44px);
  line-height:1.25;
  font-weight:700;
  letter-spacing:0;
  color:var(--c-ink);
}
.h2{
  font-size:clamp(22px,3vw,32px);
  line-height:1.35;
  font-weight:700;
  color:var(--c-ink);
}
.h3{
  font-size:19px;
  line-height:1.5;
  font-weight:600;
  color:var(--c-ink);
}
.lead{font-size:16px;line-height:1.85;color:var(--c-ink-2);}
.muted{color:var(--c-ink-3);font-size:14px;line-height:1.7;}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}

.section{padding:96px 0;}
.section--tight{padding:64px 0;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:var(--sp-24);
  margin-bottom:var(--sp-32);
}
.section-head__sub{
  margin-top:var(--sp-8);
  font-size:15px;
  color:var(--c-ink-2);
  line-height:1.7;
}
.text-link{
  color:var(--c-primary);
  font-size:14px;
  font-weight:500;
  display:inline-flex;
  align-items:center;
  gap:6px;
  transition:color .2s ease-out,gap .2s ease-out;
}
.text-link:hover{color:var(--c-primary-dark);gap:10px;}

/* =========================================================
   按钮
   ========================================================= */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:var(--sp-8);
  height:46px;
  padding:0 22px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:500;
  letter-spacing:.2px;
  border:1px solid transparent;
  transition:background-color .2s ease-out,color .2s ease-out,border-color .2s ease-out,transform .18s ease-out,box-shadow .2s ease-out;
  white-space:nowrap;
}
.btn:active{transform:translateY(1px);}
.btn-primary{
  background:var(--c-accent);
  color:#fff;
  box-shadow:var(--sh-1);
}
.btn-primary:hover{background:var(--c-accent-dark);transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-outline{
  background:var(--c-surface);
  color:var(--c-ink);
  border-color:var(--c-line);
}
.btn-outline:hover{background:var(--c-primary-light);border-color:var(--c-primary);color:var(--c-primary-dark);}
.btn-ghost{
  background:transparent;
  color:#fff;
  border-color:rgba(255,255,255,.55);
}
.btn-ghost:hover{background:rgba(255,255,255,.14);border-color:#fff;color:#fff;}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn-block{width:100%;}

/* =========================================================
   徽章 / 胶囊
   ========================================================= */
.cat-badge{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 12px;
  border-radius:var(--r-pill);
  background:var(--c-primary-light);
  color:var(--c-primary);
  font-size:12px;
  font-weight:500;
  line-height:1;
  white-space:nowrap;
}
.cat-badge--accent{
  background:#FDEDE7;
  color:var(--c-accent-dark);
}
.cat-badge--teal{
  background:#E3F7F4;
  color:#0B8377;
}
.tag-pill{
  display:inline-flex;
  align-items:center;
  height:32px;
  padding:0 14px;
  border-radius:var(--r-pill);
  border:1px solid var(--c-line);
  background:var(--c-surface);
  color:var(--c-ink-2);
  font-size:13px;
  transition:background-color .2s ease-out,border-color .2s ease-out,color .2s ease-out;
}
a.tag-pill:hover{background:var(--c-primary-light);border-color:var(--c-primary);color:var(--c-primary-dark);}

/* =========================================================
   头部导航
   ========================================================= */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid transparent;
  transition:border-color .22s ease-out,box-shadow .22s ease-out;
}
.site-header.is-scrolled{
  border-bottom-color:var(--c-line);
  box-shadow:var(--sh-1);
}
.header-inner{
  height:var(--header-h);
  display:flex;
  align-items:center;
  gap:var(--sp-32);
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.brand-mark{
  width:24px;
  height:24px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  color:var(--c-primary);
  flex-shrink:0;
}
.brand-mark svg{width:24px;height:24px;display:block;}
.brand-text{
  font-size:18px;
  font-weight:700;
  color:var(--c-ink);
  letter-spacing:.2px;
  white-space:nowrap;
}
.main-nav{
  display:flex;
  align-items:center;
  gap:var(--sp-24);
  margin-left:var(--sp-16);
  flex:1 1 auto;
  min-width:0;
}
.nav-link{
  position:relative;
  font-size:15px;
  color:var(--c-ink-2);
  padding:6px 0;
  white-space:nowrap;
  transition:color .2s ease-out;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:-2px;
  height:2px;
  background:var(--c-primary);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .22s ease-out;
}
.nav-link:hover{color:var(--c-primary);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--c-primary);font-weight:500;}
.nav-link.is-active::after{transform:scaleX(1);}
.header-actions{
  display:flex;
  align-items:center;
  gap:var(--sp-12);
  flex-shrink:0;
}
.nav-toggle{
  display:none;
  width:40px;
  height:40px;
  border-radius:var(--r-btn);
  border:1px solid var(--c-line);
  align-items:center;
  justify-content:center;
  color:var(--c-ink);
  background:var(--c-surface);
}
.nav-toggle:hover{background:var(--c-primary-light);color:var(--c-primary-dark);}

/* 移动端抽屉 */
.mobile-drawer{
  display:none;
  position:fixed;
  inset:0;
  z-index:80;
  background:var(--c-surface);
  padding:24px 24px 40px;
  overflow-y:auto;
}
.mobile-drawer.is-open{display:block;}
.drawer-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding-bottom:var(--sp-16);
  border-bottom:1px solid var(--c-line);
  margin-bottom:var(--sp-16);
}
.drawer-close{
  width:40px;height:40px;
  border-radius:var(--r-btn);
  border:1px solid var(--c-line);
  display:inline-flex;align-items:center;justify-content:center;
}
.drawer-close:hover{background:var(--c-primary-light);}
.drawer-list li+li{border-top:1px solid var(--c-line);}
.drawer-link{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:18px 4px;
  font-size:16px;
  color:var(--c-ink);
  transition:color .2s ease-out,padding-left .2s ease-out;
}
.drawer-link:hover,.drawer-link.is-active{color:var(--c-primary);padding-left:10px;}
.drawer-cta{margin-top:var(--sp-24);}

/* =========================================================
   移动端底部 Tab
   ========================================================= */
.tabbar{
  display:none;
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:70;
  height:calc(var(--tabbar-h) + env(safe-area-inset-bottom));
  padding-bottom:env(safe-area-inset-bottom);
  background:rgba(255,255,255,.98);
  border-top:1px solid var(--c-line);
  box-shadow:0 -6px 20px -12px rgba(13,42,64,.24);
}
.tabbar__inner{
  height:var(--tabbar-h);
  display:flex;
  align-items:stretch;
}
.tab-item{
  flex:1 1 0;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:3px;
  font-size:11px;
  color:var(--c-ink-3);
  transition:color .2s ease-out;
}
.tab-item svg{width:21px;height:21px;stroke-width:1.75;}
.tab-item.is-active{color:var(--c-primary);}
.tab-item.is-active svg{stroke:var(--c-primary);fill:var(--c-primary-light);}
.tab-item:hover{color:var(--c-primary);}

/* =========================================================
   面包屑
   ========================================================= */
.crumb-bar{
  background:var(--c-surface);
  border-bottom:1px solid var(--c-line);
}
.breadcrumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:var(--sp-8);
  padding:16px 0;
  font-size:13px;
  line-height:1.7;
  color:var(--c-ink-3);
}
.breadcrumb a{color:var(--c-ink-2);transition:color .2s ease-out;}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb .sep{color:var(--c-ink-3);}
.breadcrumb .current{
  color:var(--c-ink-3);
  max-width:60ch;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}

/* =========================================================
   文章头部
   ========================================================= */
.article-hero{
  position:relative;
  background:var(--c-surface);
  border-bottom:1px solid var(--c-line);
  overflow:hidden;
}
.article-hero::before{
  content:"";
  position:absolute;
  right:-8%;
  top:-30%;
  width:520px;
  height:520px;
  background:var(--c-primary-light);
  opacity:.75;
  transform:rotate(-18deg);
  border-radius:80px;
  pointer-events:none;
}
.article-hero__inner{
  position:relative;
  padding:52px 0 44px;
}
.meta-row{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:var(--sp-16);
  margin-bottom:var(--sp-16);
}
.meta-item{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:13px;
  color:var(--c-ink-3);
  line-height:1.7;
  font-variant-numeric:tabular-nums;
}
.meta-item i{font-size:12px;color:var(--c-ink-3);}
.article-title{
  font-size:clamp(26px,4.1vw,42px);
  line-height:1.28;
  font-weight:700;
  color:var(--c-ink);
  max-width:22ch;
  letter-spacing:0;
}
.hero-rule{
  margin-top:var(--sp-24);
  height:1px;
  background:var(--c-line);
}
.hero-tags{
  display:flex;
  flex-wrap:wrap;
  gap:var(--sp-8);
  margin-top:var(--sp-16);
}

/* =========================================================
   正文阅读区
   ========================================================= */
.article-main{padding:56px 0 72px;}
.article-panel{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  padding:48px 56px 40px;
}
.article-body{
  max-width:800px;
  margin:0 auto;
  font-size:17px;
  line-height:1.9;
  color:var(--c-ink);
  word-break:break-word;
}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 1.1em;}
.article-body h2{
  font-size:20px;
  line-height:1.5;
  font-weight:700;
  color:var(--c-ink);
  margin:40px 0 16px;
  padding-left:12px;
  border-left:3px solid var(--c-primary);
}
.article-body h3{
  font-size:17px;
  line-height:1.55;
  font-weight:700;
  color:var(--c-ink);
  margin:28px 0 12px;
}
.article-body h4{
  font-size:16px;
  font-weight:700;
  margin:22px 0 10px;
}
.article-body strong{font-weight:700;color:var(--c-ink);}
.article-body a{
  color:var(--c-primary);
  text-decoration:underline;
  text-underline-offset:3px;
  text-decoration-thickness:1px;
  transition:color .2s ease-out;
}
.article-body a:hover{color:var(--c-primary-dark);}
.article-body ul,.article-body ol{
  margin:0 0 1.1em;
  padding-left:24px;
}
.article-body ul{list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{margin-bottom:8px;line-height:1.9;}
.article-body li::marker{color:var(--c-primary);font-weight:500;}
.article-body blockquote{
  margin:24px 0;
  padding:16px 22px;
  border-left:3px solid var(--c-primary);
  background:var(--c-primary-light);
  border-radius:0 var(--r-img) var(--r-img) 0;
  color:var(--c-ink-2);
  font-size:16px;
  line-height:1.85;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{
  max-width:100%;
  height:auto;
  border-radius:var(--r-img);
  margin:24px auto;
}
.article-body figure{margin:24px 0;}
.article-body figcaption{
  font-size:13px;
  color:var(--c-ink-3);
  text-align:center;
  line-height:1.7;
  margin-top:8px;
}
.article-body table{
  width:100%;
  margin:24px 0;
  font-size:15px;
  border:1px solid var(--c-line);
  border-radius:var(--r-img);
  overflow:hidden;
}
.article-body thead th{
  background:var(--c-primary-light);
  color:var(--c-primary-dark);
  font-weight:600;
  text-align:left;
}
.article-body th,.article-body td{
  border-bottom:1px solid var(--c-line);
  padding:10px 14px;
  line-height:1.7;
}
.article-body tbody tr:nth-child(even){background:#FAFCFE;}
.article-body tbody tr:hover{background:var(--c-primary-light);}
.article-body hr{
  border:0;
  height:1px;
  background:var(--c-line);
  margin:32px 0;
}

/* 空态 */
.empty-state{
  text-align:center;
  padding:64px 16px;
  color:var(--c-ink-2);
}
.empty-state__icon{
  width:56px;height:56px;
  margin:0 auto 16px;
  border-radius:50%;
  background:var(--c-primary-light);
  color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;
  font-size:22px;
}
.empty-state p{font-size:15px;margin-bottom:20px;color:var(--c-ink-2);}

/* =========================================================
   文末元信息
   ========================================================= */
.article-foot{
  max-width:800px;
  margin:36px auto 0;
  padding-top:24px;
  border-top:1px solid var(--c-line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:var(--sp-16);
}
.foot-tags{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:var(--sp-8);
}
.foot-actions{
  display:flex;
  align-items:center;
  gap:var(--sp-8);
}
.act-btn{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:36px;
  padding:0 16px;
  border-radius:var(--r-pill);
  border:1px solid var(--c-line);
  background:var(--c-surface);
  color:var(--c-ink-2);
  font-size:13px;
  transition:background-color .2s ease-out,border-color .2s ease-out,color .2s ease-out;
}
.act-btn:hover{background:var(--c-primary-light);border-color:var(--c-primary);color:var(--c-primary-dark);}
.act-btn.is-on{background:var(--c-accent);border-color:var(--c-accent);color:#fff;}

/* =========================================================
   卡片 / 相关推荐
   ========================================================= */
.related-grid{margin-top:var(--sp-4);}
.related-cell{margin-bottom:var(--sp-24);}
.card{
  height:100%;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  overflow:hidden;
  display:flex;
  flex-direction:column;
  transition:transform .22s ease-out,box-shadow .22s ease-out,border-color .22s ease-out;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#D3DEE9;}
.card__media{
  position:relative;
  aspect-ratio:3 / 2;
  overflow:hidden;
  background:var(--c-primary-light);
}
.card__media img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .3s ease-out;
}
.card:hover .card__media img{transform:scale(1.03);}
.card__badge{
  position:absolute;
  left:12px;top:12px;
  z-index:2;
}
.card__body{
  padding:20px;
  display:flex;
  flex-direction:column;
  gap:10px;
  flex:1 1 auto;
}
.card__title{
  font-size:17px;
  line-height:1.5;
  font-weight:600;
  color:var(--c-ink);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
  transition:color .2s ease-out;
}
.card:hover .card__title{color:var(--c-primary);}
.card__desc{
  font-size:14px;
  line-height:1.7;
  color:var(--c-ink-2);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.card__meta{
  margin-top:auto;
  display:flex;
  align-items:center;
  gap:var(--sp-12);
  font-size:13px;
  color:var(--c-ink-3);
  font-variant-numeric:tabular-nums;
  padding-top:8px;
}
.card__meta i{font-size:12px;margin-right:4px;}

/* =========================================================
   返回入口
   ========================================================= */
.back-bar{
  background:var(--c-surface);
  border-top:1px solid var(--c-line);
  border-bottom:1px solid var(--c-line);
}
.back-bar__inner{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:var(--sp-32);
  padding:24px 0;
}
.back-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:15px;
  color:var(--c-ink-2);
  transition:color .2s ease-out,gap .2s ease-out;
}
.back-link i{font-size:13px;color:var(--c-primary);}
.back-link:hover{color:var(--c-primary);gap:12px;}

/* =========================================================
   深色 CTA（沿用首页语义，仅作收尾）
   ========================================================= */
.cta-strip{background:var(--c-dark);color:#fff;}
.cta-strip__inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:var(--sp-32);
  padding:40px 0;
  flex-wrap:wrap;
}
.cta-strip h2{
  font-size:clamp(20px,2.6vw,26px);
  line-height:1.4;
  font-weight:700;
  color:#fff;
}
.cta-strip p{
  margin-top:8px;
  font-size:14px;
  color:rgba(255,255,255,.72);
  line-height:1.7;
}
.cta-strip__actions{display:flex;align-items:center;gap:var(--sp-12);flex-wrap:wrap;}
.share-group{display:flex;align-items:center;gap:var(--sp-12);}
.share-btn{
  width:36px;height:36px;
  border-radius:50%;
  border:1px solid rgba(255,255,255,.45);
  display:inline-flex;align-items:center;justify-content:center;
  color:#fff;
  font-size:14px;
  transition:background-color .2s ease-out,border-color .2s ease-out,color .2s ease-out;
}
.share-btn:hover{background:var(--c-accent);border-color:var(--c-accent);}

/* =========================================================
   页脚
   ========================================================= */
.site-footer{
  background:var(--c-dark);
  color:rgba(255,255,255,.75);
  font-size:14px;
  line-height:2;
  padding-top:64px;
}
.footer-top{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.1fr;
  gap:var(--sp-48);
  padding-bottom:48px;
}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand .brand-text{color:#fff;}
.footer-brand .brand-mark{color:#4FA3D1;}
.footer-brand p{
  font-size:14px;
  line-height:2;
  color:rgba(255,255,255,.66);
  max-width:34ch;
}
.footer-col h4{
  font-size:14px;
  font-weight:700;
  color:#fff;
  margin-bottom:16px;
  letter-spacing:.4px;
}
.footer-col ul li{line-height:2;}
.footer-col ul li a{color:rgba(255,255,255,.72);transition:color .2s ease-out;}
.footer-col ul li a:hover{color:#fff;}
.footer-col ul li span{color:rgba(255,255,255,.6);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 32px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:var(--sp-16);
  flex-wrap:wrap;
  font-size:13px;
  color:rgba(255,255,255,.5);
}

/* =========================================================
   Foundation 组件覆盖
   ========================================================= */
.grid-container{max-width:var(--container);}
.grid-x > .cell{padding-left:0;padding-right:0;}
.grid-padding-x > .cell{padding-left:12px;padding-right:12px;}
.grid-padding-x{margin-left:-12px;margin-right:-12px;}
.button{background:var(--c-accent);border-radius:var(--r-btn);font-weight:500;}
.button:hover{background:var(--c-accent-dark);}
.callout{border:1px solid var(--c-line);border-radius:var(--r-card);}
[data-accordion] .accordion-title{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  font-size:16px;
  font-weight:600;
  color:var(--c-ink);
  padding:18px 20px;
}
[data-accordion] .accordion-title:hover{background:var(--c-primary-light);}

/* =========================================================
   响应式
   ========================================================= */
@media (max-width:1199px){
  .container{padding-left:24px;padding-right:24px;}
  .main-nav{gap:var(--sp-16);}
  .footer-top{grid-template-columns:1.4fr 1fr 1fr;gap:var(--sp-32);}
}

@media (max-width:1023px){
  .main-nav{display:none;}
  .header-actions .btn{display:none;}
  .nav-toggle{display:inline-flex;}
  .tabbar{display:block;}
  body{padding-bottom:calc(var(--tabbar-h) + env(safe-area-inset-bottom) + 16px);}
  .section{padding:72px 0;}
  .article-panel{padding:36px 32px 32px;}
  .article-hero__inner{padding:40px 0 32px;}
  .article-title{max-width:100%;}
  .footer-top{grid-template-columns:1fr 1fr;gap:var(--sp-32);}
}

@media (max-width:767px){
  .container{padding-left:16px;padding-right:16px;}
  .section{padding:56px 0;}
  .section-head{flex-direction:column;align-items:flex-start;gap:var(--sp-12);}
  .brand-text{font-size:16px;}
  .article-main{padding:32px 0 48px;}
  .article-panel{padding:24px 18px 22px;border-radius:var(--r-card);}
  .article-body{font-size:16.5px;line-height:1.9;}
  .article-body h2{font-size:18px;margin:32px 0 14px;}
  .article-body h3{font-size:16.5px;}
  .article-foot{flex-direction:column;align-items:flex-start;}
  .breadcrumb .current{max-width:100%;white-space:normal;}
  .cta-strip__inner{flex-direction:column;align-items:flex-start;}
  .cta-strip__actions{width:100%;}
  .cta-strip__actions .btn{flex:1 1 auto;}
  .back-bar__inner{gap:var(--sp-16);}
  .footer-top{grid-template-columns:1fr;gap:var(--sp-32);}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:6px;}
}

@media (max-width:520px){
  .article-title{font-size:24px;}
  .meta-row{gap:var(--sp-8);}
  .card__body{padding:16px;}
  .related-cell{margin-bottom:var(--sp-16);}
}

/* roulang page: category1 */
:root{
  --c-primary:#0F5C8C;
  --c-primary-dark:#0A3F62;
  --c-primary-light:#E7F0F7;
  --c-accent:#F05A28;
  --c-accent-2:#12B5A4;
  --c-bg:#F4F7FA;
  --c-surface:#FFFFFF;
  --c-dark:#0A2233;
  --c-ink:#132433;
  --c-ink-2:#54697C;
  --c-ink-3:#8C9CAB;
  --c-line:#E2E9F0;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(13,42,64,.06);
  --sh-2:0 8px 24px -8px rgba(13,42,64,.14);
  --s-4:4px; --s-8:8px; --s-12:12px; --s-16:16px; --s-24:24px;
  --s-32:32px; --s-48:48px; --s-64:64px; --s-96:96px;
  --ease:all 200ms ease-out;
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
body,button,input,select,textarea{font-feature-settings:"tnum" 1;font-variant-numeric:tabular-nums}
img{max-width:100%;display:block;border-style:none}
a{color:var(--c-primary);text-decoration:none;transition:var(--ease)}
a:hover{color:var(--c-primary-dark)}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
button{font-family:inherit;cursor:pointer;border:0;background:none}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 var(--s-32)}
.grid-container{max-width:var(--container);padding-left:var(--s-32);padding-right:var(--s-32)}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;background:var(--c-surface);
  border-bottom:1px solid transparent;transition:var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--c-line);box-shadow:0 1px 0 rgba(13,42,64,.04)}
.header-inner{display:flex;align-items:center;gap:var(--s-32);height:64px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--c-ink);font-weight:700}
.brand:hover{color:var(--c-primary)}
.brand-mark{
  width:36px;height:36px;border-radius:10px;flex:0 0 36px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--c-primary-light);color:var(--c-primary);
}
.brand-mark svg{width:22px;height:22px}
.brand-text{font-size:18px;font-weight:700;letter-spacing:0;white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:var(--s-24);margin-left:auto}
.nav-link{
  position:relative;font-size:15px;color:var(--c-ink-2);padding:6px 0;font-weight:500;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;
  background:var(--c-primary);transform:scaleX(0);transform-origin:left;transition:transform 200ms ease-out;
}
.nav-link:hover{color:var(--c-ink)}
.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-cta{
  display:inline-flex;align-items:center;height:40px;padding:0 18px;border-radius:var(--r-btn);
  background:var(--c-accent);color:#fff;font-size:15px;font-weight:500;white-space:nowrap;
  transition:var(--ease);
}
.header-cta:hover{background:#d94d1e;color:#fff;transform:translateY(-1px)}
.header-cta:active{transform:translateY(0)}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:var(--r-btn);color:var(--c-ink);
  align-items:center;justify-content:center;border:1px solid var(--c-line);
}
.nav-toggle svg{width:20px;height:20px}

/* ============ 移动抽屉 ============ */
.drawer{
  position:fixed;inset:0;z-index:90;background:var(--c-surface);
  padding:var(--s-24);display:none;flex-direction:column;gap:var(--s-8);
  overflow-y:auto;
}
.drawer.is-open{display:flex}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--s-16)}
.drawer-close{width:40px;height:40px;border:1px solid var(--c-line);border-radius:var(--r-btn);display:inline-flex;align-items:center;justify-content:center;color:var(--c-ink)}
.drawer-close svg{width:20px;height:20px}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 4px;font-size:17px;color:var(--c-ink);border-bottom:1px solid var(--c-line);
}
.drawer-link.is-active{color:var(--c-primary);font-weight:700}
.drawer-link span.arw{color:var(--c-ink-3)}
.drawer-cta{
  margin-top:var(--s-24);height:48px;border-radius:var(--r-btn);background:var(--c-accent);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;font-size:16px;font-weight:500;
}

/* ============ 移动底部 Tab ============ */
.tabbar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:80;height:56px;
  background:var(--c-surface);border-top:1px solid var(--c-line);
  padding-bottom:env(safe-area-inset-bottom);
}
.tabbar ul{display:flex;height:56px}
.tabbar li{flex:1 1 0}
.tabbar a{
  height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;
  font-size:12px;color:var(--c-ink-3);line-height:1.2;
}
.tabbar a svg{width:22px;height:22px;stroke-width:1.75}
.tabbar a.is-active{color:var(--c-primary);font-weight:700}
.tabbar a.is-active svg{stroke:var(--c-primary)}
.tabbar a:hover{color:var(--c-primary)}

/* ============ 面包屑 ============ */
.crumb-bar{background:var(--c-surface);border-bottom:1px solid var(--c-line)}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:6px;font-size:13px;color:var(--c-ink-3);padding:12px 0}
.crumb a{color:var(--c-ink-2)}
.crumb a:hover{color:var(--c-primary)}
.crumb .sep{color:var(--c-ink-3)}
.crumb .now{color:var(--c-ink-3)}

/* ============ 分类头图 ============ */
.page-banner{
  position:relative;min-height:280px;display:flex;align-items:flex-end;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
  overflow:hidden;
}
.page-banner::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(10,34,51,.86) 0%,rgba(10,34,51,.62) 48%,rgba(10,34,51,.22) 100%);
}
.banner-inner{position:relative;z-index:2;padding-top:var(--s-64);padding-bottom:var(--s-48);color:#fff}
.banner-tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--r-pill);
  background:rgba(240,90,40,.92);color:#fff;font-size:12px;font-weight:500;letter-spacing:.02em;
}
.banner-inner h1{
  margin-top:var(--s-16);
  font-size:clamp(28px,4.4vw,44px);line-height:1.25;font-weight:700;color:#fff;
}
.banner-sub{
  margin-top:var(--s-12);max-width:720px;font-size:16px;line-height:1.7;color:rgba(255,255,255,.82);
}
.banner-facts{display:flex;flex-wrap:wrap;gap:var(--s-32);margin-top:var(--s-24)}
.banner-facts div{display:flex;flex-direction:column;gap:2px}
.banner-facts strong{font-size:22px;color:#fff;font-weight:700;line-height:1.2}
.banner-facts span{font-size:13px;color:rgba(255,255,255,.72)}

/* ============ 主体分栏 ============ */
main{display:block}
.page-layout{padding-top:var(--s-48);padding-bottom:var(--s-64)}
.layout-row{display:flex;gap:var(--s-48);align-items:flex-start}
.toc-col{flex:0 0 25%;max-width:280px}
.content-col{flex:1 1 auto;min-width:0}

/* 吸顶目录 */
.toc{
  position:sticky;top:88px;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);box-shadow:var(--sh-1);padding:var(--s-24) var(--s-16);
}
.toc h2{font-size:15px;font-weight:700;color:var(--c-ink);padding:0 var(--s-8) var(--s-12)}
.toc ol{display:flex;flex-direction:column;gap:2px;counter-reset:toc}
.toc a{
  display:flex;gap:var(--s-12);align-items:flex-start;
  padding:10px var(--s-8);border-radius:8px;color:var(--c-ink-2);font-size:14px;line-height:1.5;
}
.toc a:hover{background:var(--c-primary-light);color:var(--c-primary-dark)}
.toc a.is-current{background:var(--c-primary-light);color:var(--c-primary-dark);font-weight:700}
.toc .num{
  flex:0 0 auto;font-size:12px;color:var(--c-accent);font-weight:700;
  line-height:1.8;letter-spacing:.04em;
}
.toc-note{
  margin-top:var(--s-16);padding:var(--s-12);border-radius:10px;background:var(--c-bg);
  font-size:13px;color:var(--c-ink-2);line-height:1.7;
}
/* 移动端目录胶囊 */
.toc-strip{display:none;gap:var(--s-8);overflow-x:auto;padding:var(--s-12) 0 var(--s-16);scroll-behavior:smooth;overscroll-behavior:contain}
.toc-strip a{
  flex:0 0 auto;display:inline-flex;align-items:center;height:34px;padding:0 14px;
  border-radius:var(--r-pill);border:1px solid var(--c-line);background:var(--c-surface);
  color:var(--c-ink-2);font-size:13px;white-space:nowrap;
}
.toc-strip a:hover{border-color:var(--c-primary);color:var(--c-primary)}
.toc-strip a.is-current{background:var(--c-primary);border-color:var(--c-primary);color:#fff}

/* ============ 内容分组 ============ */
.entry-group{padding-bottom:var(--s-48);scroll-margin-top:88px}
.group-head{display:flex;align-items:flex-end;justify-content:space-between;gap:var(--s-16);margin-bottom:var(--s-24);border-bottom:1px solid var(--c-line);padding-bottom:var(--s-12)}
.group-head h2{font-size:clamp(20px,2.4vw,26px);line-height:1.35;font-weight:700;color:var(--c-ink)}
.group-head h2 em{font-style:normal;color:var(--c-accent);margin-right:8px;font-size:15px}
.group-head .group-link{font-size:14px;color:var(--c-primary);white-space:nowrap}
.group-head .group-link:hover{color:var(--c-primary-dark)}

.card-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--s-24)}
.card{
  display:flex;flex-direction:column;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);transition:var(--ease);
  height:100%;
}
.card:hover{box-shadow:var(--sh-2);transform:translateY(-2px);border-color:#d5e1ea}
.card:focus-within{box-shadow:var(--sh-2)}
.card-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--c-primary-light)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform 300ms ease-out}
.card:hover .card-media img{transform:scale(1.03)}
.card-media .badge{position:absolute;left:var(--s-12);top:var(--s-12)}
.card-body{padding:var(--s-16) var(--s-16) var(--s-24);display:flex;flex-direction:column;flex:1 1 auto;gap:var(--s-12)}
.card-title{font-size:18px;line-height:1.5;font-weight:500;color:var(--c-ink)}
.card-title a{color:inherit;display:block}
.card-title a:hover{color:var(--c-primary)}
.card-text{font-size:14px;line-height:1.75;color:var(--c-ink-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{display:flex;flex-wrap:wrap;align-items:center;gap:var(--s-12);font-size:13px;color:var(--c-ink-3);margin-top:auto}
.card-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--c-ink-3)}
.card-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:500;color:var(--c-primary)}
.card-link svg{width:14px;height:14px;transition:transform 200ms ease-out}
.card-link:hover svg{transform:translateX(4px)}

/* 徽章 */
.badge{
  display:inline-flex;align-items:center;gap:4px;height:24px;padding:0 10px;border-radius:var(--r-pill);
  background:var(--c-primary-light);color:var(--c-primary);font-size:12px;font-weight:500;line-height:1;
}
.badge.badge-accent{background:rgba(240,90,40,.12);color:#c9421a}
.badge.badge-teal{background:rgba(18,181,164,.12);color:#0b8a7d}
.badge.badge-solid{background:var(--c-dark);color:#fff}

/* ============ 订阅提醒 ============ */
.notify-band{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:var(--s-32);margin-bottom:var(--s-64);
  display:flex;gap:var(--s-48);align-items:center;flex-wrap:wrap;
}
.notify-copy{flex:1 1 320px;min-width:0}
.notify-copy h2{font-size:22px;font-weight:700;line-height:1.4}
.notify-copy p{margin-top:var(--s-8);font-size:14px;color:var(--c-ink-2)}
.notify-form{flex:1 1 380px;display:flex;flex-wrap:wrap;gap:var(--s-12);align-items:flex-end}
.field{flex:1 1 220px;min-width:0;display:flex;flex-direction:column;gap:6px}
.field label{font-size:13px;color:var(--c-ink-2)}
.field input{
  height:44px;border-radius:var(--r-btn);border:1px solid var(--c-line);background:#fff;
  padding:0 14px;font-size:15px;color:var(--c-ink);width:100%;transition:var(--ease);
}
.field input::placeholder{color:var(--c-ink-3)}
.field input:focus{border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(15,92,140,.12);outline:none}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);font-size:15px;font-weight:500;
  transition:var(--ease);white-space:nowrap;
}
.btn:active{transform:translateY(0)}
.btn-primary{background:var(--c-accent);color:#fff}
.btn-primary:hover{background:#d94d1e;color:#fff;transform:translateY(-1px)}
.btn-secondary{background:#fff;color:var(--c-ink);border:1px solid var(--c-line)}
.btn-secondary:hover{background:var(--c-primary-light);color:var(--c-primary-dark);border-color:#cfe0ec}
.btn-ghost{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.6)}
.btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff}
.btn-sm{height:40px;padding:0 16px;font-size:14px}

/* ============ 相关推荐横滑 ============ */
.rail-section{padding:0 0 var(--s-64)}
.rail-head{display:flex;align-items:flex-end;justify-content:space-between;gap:var(--s-16);margin-bottom:var(--s-24)}
.rail-head h2{font-size:clamp(20px,2.4vw,26px);font-weight:700;line-height:1.35}
.rail-head a{font-size:14px}
.rail{
  display:grid;grid-auto-flow:column;grid-auto-columns:minmax(280px,1fr);gap:var(--s-24);
  overflow-x:auto;padding-bottom:var(--s-12);overscroll-behavior:contain;scroll-behavior:smooth;
}
.rail-card{
  display:flex;flex-direction:column;height:260px;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);transition:var(--ease);
}
.rail-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}
.rail-card img{width:100%;height:130px;object-fit:cover}
.rail-card .rail-body{padding:var(--s-12) var(--s-16) var(--s-16);display:flex;flex-direction:column;gap:6px;flex:1 1 auto}
.rail-card h3{font-size:16px;line-height:1.5;font-weight:500;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rail-card h3 a{color:var(--c-ink)}
.rail-card h3 a:hover{color:var(--c-primary)}
.rail-card .rail-foot{margin-top:auto;font-size:12px;color:var(--c-ink-3);display:flex;align-items:center;gap:8px}

/* ============ 深色 CTA ============ */
.cta-band{background:var(--c-dark);color:#fff;padding:var(--s-48) 0}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:var(--s-32);flex-wrap:wrap}
.cta-copy h2{font-size:clamp(20px,2.6vw,28px);font-weight:700;line-height:1.4;color:#fff}
.cta-copy p{margin-top:var(--s-8);font-size:15px;color:rgba(255,255,255,.72);max-width:560px}
.cta-actions{display:flex;align-items:center;gap:var(--s-12);flex-wrap:wrap}
.share-group{display:flex;align-items:center;gap:var(--s-12);margin-left:var(--s-12)}
.share-btn{
  width:36px;height:36px;border-radius:50%;border:1px solid rgba(255,255,255,.45);
  display:inline-flex;align-items:center;justify-content:center;color:#fff;transition:var(--ease);
}
.share-btn svg{width:17px;height:17px}
.share-btn:hover{background:var(--c-accent);border-color:var(--c-accent);color:#fff}
.share-btn:active{transform:scale(.96)}

/* ============ FAQ ============ */
.faq-section{padding:var(--s-64) 0}
.faq-section > .container > h2{font-size:clamp(20px,2.4vw,26px);font-weight:700;margin-bottom:var(--s-8)}
.faq-section > .container > p.lead{font-size:15px;color:var(--c-ink-2);margin-bottom:var(--s-24);max-width:720px}
.accordion{border:0;background:transparent}
.accordion .accordion-item{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);margin-bottom:var(--s-12);overflow:hidden;position:relative;
}
.accordion .accordion-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--c-primary);
  transform:scaleY(0);transform-origin:top;transition:transform 200ms ease-out;
}
.accordion .accordion-item.is-active::before{transform:scaleY(1)}
.accordion-title{
  border:0;font-size:16px;font-weight:600;color:var(--c-ink);padding:18px 52px 18px 20px;line-height:1.6;
}
.accordion-title:hover{background:var(--c-primary-light)}
.accordion-title::before{
  content:"";position:absolute;right:20px;top:50%;width:12px;height:12px;margin-top:-7px;
  border-right:2px solid var(--c-primary);border-bottom:2px solid var(--c-primary);
  transform:rotate(45deg);transition:transform 200ms ease-out;
}
.accordion-item.is-active .accordion-title::before{transform:rotate(-135deg)}
.accordion-content{padding:0 20px 20px;font-size:15px;line-height:1.8;color:var(--c-ink-2);border:0}
.accordion-content p{margin-bottom:8px}
.accordion-content p:last-child{margin-bottom:0}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-dark);color:rgba(255,255,255,.78);font-size:14px;line-height:2}
.footer-top{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:var(--s-48);
  padding:var(--s-64) 0 var(--s-48);
}
.footer-brand .brand{color:#fff;margin-bottom:var(--s-12)}
.footer-brand .brand:hover{color:#fff}
.footer-brand .brand-mark{background:rgba(255,255,255,.12);color:#fff}
.footer-brand p{font-size:14px;line-height:1.9;color:rgba(255,255,255,.68);max-width:360px}
.footer-col h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:var(--s-12)}
.footer-col ul{display:flex;flex-direction:column;gap:2px}
.footer-col a,.footer-col span{color:rgba(255,255,255,.72);font-size:14px;line-height:2}
.footer-col a:hover{color:#fff}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);padding:var(--s-16) 0 var(--s-24);
  display:flex;justify-content:space-between;gap:var(--s-16);flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.6);
}

/* ============ 响应式 ============ */
@media screen and (max-width:1199px){
  .container,.grid-container{padding-left:var(--s-32);padding-right:var(--s-32)}
}
@media screen and (max-width:1023px){
  .main-nav,.header-cta{display:none}
  .nav-toggle{display:inline-flex}
  .tabbar{display:block}
  body{padding-bottom:calc(72px + env(safe-area-inset-bottom))}
  .layout-row{flex-direction:column;gap:var(--s-24)}
  .toc-col{flex:1 1 auto;max-width:none;width:100%}
  .toc{display:none}
  .toc-strip{display:flex}
  .page-layout{padding-top:var(--s-24)}
  .footer-top{grid-template-columns:1fr 1fr;gap:var(--s-32);padding:var(--s-48) 0 var(--s-32)}
  .footer-brand{grid-column:1 / -1}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .notify-band{padding:var(--s-24);gap:var(--s-24)}
}
@media screen and (max-width:767px){
  .container,.grid-container{padding-left:var(--s-24);padding-right:var(--s-24)}
  .card-grid{grid-template-columns:1fr;gap:var(--s-16)}
  .page-banner{min-height:260px}
  .banner-inner{padding-top:var(--s-48);padding-bottom:var(--s-32)}
  .banner-facts{gap:var(--s-24)}
  .rail{grid-auto-columns:82%}
  .entry-group{padding-bottom:var(--s-32)}
  .faq-section{padding:var(--s-48) 0}
  .group-head{flex-direction:column;align-items:flex-start;gap:6px}
}
@media screen and (max-width:520px){
  .container,.grid-container{padding-left:var(--s-16);padding-right:var(--s-16)}
  .brand-text{font-size:16px}
  .banner-sub{font-size:15px}
  .banner-facts div strong{font-size:20px}
  .notify-form{flex-direction:column;align-items:stretch}
  .btn{width:100%}
  .cta-actions{width:100%}
  .cta-actions .btn{width:auto;flex:1 1 auto}
  .share-group{margin-left:0}
  .footer-top{grid-template-columns:1fr;gap:var(--s-24)}
  .footer-bottom{flex-direction:column}
  .rail{grid-auto-columns:88%}
  .card-title{font-size:17px}
}

/* roulang page: category2 */
/* ========== 设计变量 ========== */
:root{
  --c-primary:#0F5C8C;
  --c-primary-d:#0A3F62;
  --c-primary-l:#E7F0F7;
  --c-accent:#F05A28;
  --c-accent-d:#D64A1B;
  --c-accent-2:#12B5A4;
  --c-bg:#F4F7FA;
  --c-surface:#FFFFFF;
  --c-dark:#0A2233;
  --c-ink:#132433;
  --c-ink-2:#54697C;
  --c-ink-3:#8C9CAB;
  --c-line:#E2E9F0;

  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --r-pill:999px;

  --sh-1:0 1px 2px rgba(13,42,64,.06);
  --sh-2:0 8px 24px -8px rgba(13,42,64,.14);

  --sp-1:4px;
  --sp-2:8px;
  --sp-3:12px;
  --sp-4:16px;
  --sp-5:24px;
  --sp-6:32px;
  --sp-7:48px;
  --sp-8:64px;
  --sp-9:96px;

  --fs-h1:clamp(28px,4.4vw,44px);
  --fs-h2:clamp(22px,3vw,32px);
  --fs-h3:clamp(17px,1.6vw,20px);
  --fs-body:16px;
  --fs-sm:14px;
  --fs-xs:12px;

  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-num:"Inter",system-ui,-apple-system,"Segoe UI",sans-serif;

  --tr:220ms ease-out;
}

/* ========== reset / base ========== */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  padding:0 0 0 0;
  font-family:var(--font-cn);
  font-size:var(--fs-body);
  line-height:1.85;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5,h6{margin:0;font-weight:700;letter-spacing:0;color:var(--c-ink);}
p{margin:0;}
a{color:var(--c-primary);text-decoration:none;transition:color var(--tr),background-color var(--tr),border-color var(--tr);}
a:hover{color:var(--c-primary-d);}
img{max-width:100%;display:block;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input,textarea,select{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px;}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;}

/* ========== 容器 ========== */
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:32px;
  padding-right:32px;
}
.container-narrow{max-width:920px;}

/* ========== 顶部导航 ========== */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:var(--c-surface);
  border-bottom:1px solid transparent;
  transition:border-color var(--tr),box-shadow var(--tr);
}
.site-header.is-scrolled{
  border-bottom-color:var(--c-line);
  box-shadow:0 2px 12px -8px rgba(13,42,64,.28);
}
.header-inner{
  height:64px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:var(--sp-5);
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
}
.brand-mark{
  width:24px;
  height:24px;
  color:var(--c-primary);
  display:inline-flex;
  align-items:center;
  justify-content:center;
}
.brand-mark svg{width:24px;height:24px;display:block;}
.brand-text{
  font-size:18px;
  font-weight:700;
  color:var(--c-ink);
  letter-spacing:.2px;
  white-space:nowrap;
}
.main-nav{
  display:flex;
  align-items:center;
  gap:var(--sp-2);
  flex:1 1 auto;
  justify-content:center;
}
.nav-link{
  position:relative;
  display:inline-block;
  padding:20px 12px;
  font-size:15px;
  font-weight:500;
  color:var(--c-ink-2);
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:12px;
  right:12px;
  bottom:12px;
  height:2px;
  background:var(--c-primary);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform var(--tr);
}
.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-cta{display:inline-flex;align-items:center;gap:var(--sp-3);flex:0 0 auto;}
.nav-toggle{
  display:none;
  width:40px;
  height:40px;
  align-items:center;
  justify-content:center;
  border:1px solid var(--c-line);
  border-radius:var(--r-btn);
  color:var(--c-ink);
}
.nav-toggle svg{width:20px;height:20px;}

/* ========== 按钮 ========== */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 22px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:500;
  line-height:1;
  border:1px solid transparent;
  transition:background-color var(--tr),color var(--tr),border-color var(--tr),transform var(--tr),box-shadow var(--tr);
  white-space:nowrap;
}
.btn-primary{background:var(--c-accent);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--c-accent-d);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0);}
.btn-secondary{background:var(--c-surface);color:var(--c-ink);border-color:var(--c-line);}
.btn-secondary:hover{background:var(--c-primary-l);color:var(--c-primary-d);border-color:#CFE0EC;}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.5);}
.btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff;}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn-block{width:100%;}

/* ========== 徽章 / 标签 ========== */
.badge{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 10px;
  border-radius:var(--r-pill);
  font-size:var(--fs-xs);
  font-weight:500;
  line-height:1;
  background:var(--c-primary-l);
  color:var(--c-primary);
}
.badge-accent{background:rgba(240,90,40,.12);color:var(--c-accent-d);}
.badge-teal{background:rgba(18,181,164,.13);color:#0B8577;}
.meta{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:var(--fs-xs);
  color:var(--c-ink-3);
}
.meta svg{width:14px;height:14px;}

/* ========== 分类页横幅 ========== */
.cat-banner{
  position:relative;
  height:280px;
  overflow:hidden;
  background:var(--c-primary-d);
}
.cat-banner-img{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  object-fit:cover;
}
.cat-banner-mask{
  position:absolute;
  inset:0;
  background:linear-gradient(105deg,rgba(10,34,51,.86) 0%,rgba(10,34,51,.62) 45%,rgba(10,34,51,.30) 100%);
}
.cat-banner-inner{
  position:relative;
  z-index:2;
  height:100%;
  display:flex;
  flex-direction:column;
  justify-content:flex-end;
  padding-bottom:var(--sp-6);
  color:#fff;
}
.cat-crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:rgba(255,255,255,.72);
  margin-bottom:var(--sp-3);
}
.cat-crumb a{color:rgba(255,255,255,.78);}
.cat-crumb a:hover{color:#fff;}
.cat-crumb span.sep{color:rgba(255,255,255,.42);}
.cat-brandline{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:500;
  color:#fff;
  background:rgba(255,255,255,.14);
  border:1px solid rgba(255,255,255,.22);
  border-radius:var(--r-pill);
  padding:5px 12px;
  margin-bottom:var(--sp-4);
  align-self:flex-start;
}
.cat-banner h1{
  color:#fff;
  font-size:var(--fs-h1);
  line-height:1.25;
  max-width:820px;
}
.cat-banner p{
  margin-top:var(--sp-3);
  font-size:15px;
  line-height:1.75;
  color:rgba(255,255,255,.82);
  max-width:680px;
}

/* ========== 主体 ========== */
main{display:block;}
.section{padding:var(--sp-8) 0;}
.section-tight{padding:var(--sp-7) 0;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:var(--sp-5);
  margin-bottom:var(--sp-6);
}
.section-head h2{
  font-size:var(--fs-h2);
  line-height:1.35;
}
.section-head .sub{
  margin-top:10px;
  font-size:var(--fs-sm);
  color:var(--c-ink-2);
  max-width:640px;
}
.section-link{
  font-size:var(--fs-sm);
  font-weight:500;
  color:var(--c-primary);
  display:inline-flex;
  align-items:center;
  gap:6px;
  white-space:nowrap;
}
.section-link svg{width:16px;height:16px;transition:transform var(--tr);}
.section-link:hover svg{transform:translateX(4px);}

/* ========== 概览数据 ========== */
.overview{padding-top:var(--sp-7);}
.stat-row{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:var(--sp-4);
  margin-bottom:var(--sp-7);
}
.stat-card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:var(--sp-5);
  box-shadow:var(--sh-1);
  transition:box-shadow var(--tr),transform var(--tr);
}
.stat-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px);}
.stat-value{
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  font-size:32px;
  font-weight:700;
  line-height:1.2;
  color:var(--c-accent);
}
.stat-label{
  margin-top:6px;
  font-size:var(--fs-sm);
  color:var(--c-ink-2);
}
.stat-note{
  margin-top:var(--sp-3);
  padding-top:var(--sp-3);
  border-top:1px dashed var(--c-line);
  font-size:var(--fs-xs);
  color:var(--c-ink-3);
}

/* ========== 锚点目录 ========== */
.anchor-bar{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:var(--sp-4) var(--sp-5);
  box-shadow:var(--sh-1);
  display:flex;
  align-items:center;
  gap:var(--sp-4);
  flex-wrap:wrap;
  margin-bottom:var(--sp-7);
}
.anchor-bar .anchor-title{
  font-size:var(--fs-sm);
  font-weight:700;
  color:var(--c-ink);
  display:inline-flex;
  align-items:center;
  gap:8px;
}
.anchor-bar .anchor-title svg{width:16px;height:16px;color:var(--c-primary);}
.anchor-list{display:flex;flex-wrap:wrap;gap:10px;}
.anchor-list a{
  display:inline-flex;
  align-items:center;
  height:32px;
  padding:0 14px;
  border-radius:var(--r-pill);
  border:1px solid var(--c-line);
  font-size:13px;
  color:var(--c-ink-2);
  background:var(--c-bg);
}
.anchor-list a:hover{
  background:var(--c-primary-l);
  color:var(--c-primary-d);
  border-color:#CFE0EC;
}

/* ========== 时间轴条目 ========== */
.timeline-wrap{max-width:880px;margin:0 auto;}
.timeline{
  position:relative;
  padding-left:0;
}
.timeline::before{
  content:"";
  position:absolute;
  left:16px;
  top:12px;
  bottom:12px;
  width:2px;
  background:linear-gradient(180deg,rgba(15,92,140,.55) 0%,rgba(15,92,140,.18) 100%);
  border-radius:2px;
}
.tl-item{
  position:relative;
  padding-left:64px;
  margin-bottom:var(--sp-5);
}
.tl-item:last-child{margin-bottom:0;}
.tl-dot{
  position:absolute;
  left:0;
  top:18px;
  width:34px;
  height:34px;
  border-radius:50%;
  background:var(--c-surface);
  border:2px solid var(--c-primary);
  color:var(--c-primary);
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  font-size:12px;
  font-weight:700;
  display:flex;
  align-items:center;
  justify-content:center;
  z-index:2;
  transition:background-color var(--tr),color var(--tr),border-color var(--tr);
}
.tl-card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:var(--sp-5);
  box-shadow:var(--sh-1);
  transition:box-shadow var(--tr),transform var(--tr),border-color var(--tr);
  display:block;
}
.tl-card:hover{
  box-shadow:var(--sh-2);
  transform:translateY(-2px);
  border-color:#CFE0EC;
}
.tl-item:hover .tl-dot{background:var(--c-accent);border-color:var(--c-accent);color:#fff;}
.tl-top{
  display:flex;
  align-items:center;
  gap:10px;
  flex-wrap:wrap;
  margin-bottom:10px;
}
.tl-title{
  font-size:var(--fs-h3);
  font-weight:500;
  line-height:1.5;
  color:var(--c-ink);
  margin-bottom:8px;
}
.tl-card:hover .tl-title{color:var(--c-primary);}
.tl-desc{
  font-size:15px;
  line-height:1.8;
  color:var(--c-ink-2);
}
.tl-bottom{
  margin-top:var(--sp-4);
  padding-top:var(--sp-3);
  border-top:1px solid var(--c-line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:var(--sp-4);
  flex-wrap:wrap;
}
.tl-tags{display:flex;gap:8px;flex-wrap:wrap;}
.tl-more{
  font-size:var(--fs-sm);
  font-weight:500;
  color:var(--c-primary);
  display:inline-flex;
  align-items:center;
  gap:6px;
}
.tl-more svg{width:16px;height:16px;transition:transform var(--tr);}
.tl-card:hover .tl-more svg{transform:translateX(4px);}

/* ========== 说明区（数据口径） ========== */
.panel{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:var(--sp-6);
  box-shadow:var(--sh-1);
}
.panel + .panel{margin-top:var(--sp-4);}
.panel h3{font-size:var(--fs-h3);font-weight:500;margin-bottom:var(--sp-3);}
.panel p{font-size:15px;line-height:1.85;color:var(--c-ink-2);}
.panel p + p{margin-top:var(--sp-3);}
.rule-list{margin-top:var(--sp-4);display:grid;gap:var(--sp-3);}
.rule-item{
  display:flex;
  gap:var(--sp-3);
  padding:var(--sp-4);
  background:var(--c-bg);
  border-radius:10px;
  border-left:3px solid var(--c-primary);
}
.rule-item .rule-idx{
  font-family:var(--font-num);
  font-size:13px;
  font-weight:700;
  color:var(--c-accent);
  flex:0 0 auto;
  padding-top:2px;
}
.rule-item h4{font-size:15px;font-weight:700;margin-bottom:4px;}
.rule-item p{font-size:14px;line-height:1.75;color:var(--c-ink-2);}

/* ========== 相关推荐 ========== */
.rec-rail{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:var(--sp-5);
}
.rec-card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:box-shadow var(--tr),transform var(--tr);
  display:flex;
  flex-direction:column;
  height:100%;
}
.rec-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px);}
.rec-media{
  position:relative;
  aspect-ratio:16/9;
  overflow:hidden;
  background:var(--c-primary-l);
}
.rec-media img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform 300ms ease-out;
}
.rec-card:hover .rec-media img{transform:scale(1.03);}
.rec-body{padding:var(--sp-5);display:flex;flex-direction:column;gap:10px;flex:1 1 auto;}
.rec-body h3{font-size:17px;font-weight:500;line-height:1.5;}
.rec-body p{font-size:14px;line-height:1.75;color:var(--c-ink-2);flex:1 1 auto;}
.rec-foot{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:var(--sp-3);
  padding-top:var(--sp-3);
  border-top:1px solid var(--c-line);
}

/* ========== CTA 带 ========== */
.cta-band{
  background:var(--c-dark);
  color:#fff;
  padding:var(--sp-7) 0;
}
.cta-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:var(--sp-6);
  flex-wrap:wrap;
}
.cta-copy h2{
  color:#fff;
  font-size:var(--fs-h2);
  line-height:1.35;
  margin-bottom:10px;
}
.cta-copy p{
  font-size:15px;
  line-height:1.8;
  color:rgba(255,255,255,.72);
  max-width:620px;
}
.cta-actions{display:flex;align-items:center;gap:var(--sp-3);flex-wrap:wrap;}
.share-group{display:flex;align-items:center;gap:12px;margin-left:var(--sp-3);}
.share-btn{
  width:36px;
  height:36px;
  border-radius:50%;
  border:1px solid rgba(255,255,255,.4);
  color:#fff;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  transition:background-color var(--tr),border-color var(--tr),color var(--tr);
}
.share-btn svg{width:16px;height:16px;}
.share-btn:hover{background:#fff;color:var(--c-dark);border-color:#fff;}

/* ========== FAQ ========== */
.faq-wrap{max-width:880px;margin:0 auto;}
.accordion.faq-accordion{
  background:transparent;
  border:0;
  margin:0;
}
.faq-accordion .accordion-item{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  margin-bottom:var(--sp-3);
  box-shadow:var(--sh-1);
  overflow:hidden;
  transition:border-color var(--tr),box-shadow var(--tr);
}
.faq-accordion .accordion-item:hover{border-color:#CFE0EC;}
.faq-accordion .accordion-item.is-active{
  border-color:#CFE0EC;
  box-shadow:var(--sh-2);
}
.faq-accordion .accordion-title{
  border:0;
  padding:var(--sp-5);
  font-size:16px;
  font-weight:600;
  color:var(--c-ink);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:var(--sp-4);
  position:relative;
  background:transparent;
}
.faq-accordion .accordion-title::before{
  content:"";
  position:absolute;
  left:0;
  top:0;
  bottom:0;
  width:3px;
  background:var(--c-accent);
  transform:scaleY(0);
  transform-origin:center;
  transition:transform var(--tr);
}
.faq-accordion .accordion-item.is-active .accordion-title::before{transform:scaleY(1);}
.faq-accordion .accordion-title::after{
  content:"+";
  position:static;
  margin:0;
  flex:0 0 auto;
  width:26px;
  height:26px;
  border-radius:50%;
  border:1px solid var(--c-line);
  color:var(--c-primary);
  font-family:var(--font-num);
  font-size:16px;
  line-height:1;
  display:flex;
  align-items:center;
  justify-content:center;
  transition:transform var(--tr),background-color var(--tr),color var(--tr),border-color var(--tr);
  transform:none;
}
.faq-accordion .accordion-item.is-active .accordion-title::after{
  transform:rotate(45deg);
  background:var(--c-primary);
  border-color:var(--c-primary);
  color:#fff;
}
.faq-accordion .accordion-content{
  border:0;
  padding:0 var(--sp-5) var(--sp-5);
  font-size:15px;
  line-height:1.85;
  color:var(--c-ink-2);
}
.faq-accordion .accordion-content p + p{margin-top:10px;}

/* ========== 页脚 ========== */
.site-footer{
  background:var(--c-dark);
  color:rgba(255,255,255,.72);
  padding:var(--sp-8) 0 var(--sp-5);
  font-size:14px;
  line-height:2;
}
.footer-top{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:var(--sp-6);
  padding-bottom:var(--sp-7);
  border-bottom:1px solid rgba(255,255,255,.12);
}
.footer-brand .brand-text{color:#fff;}
.footer-brand .brand-mark{color:#fff;}
.footer-brand p{
  margin-top:var(--sp-4);
  font-size:14px;
  line-height:1.9;
  color:rgba(255,255,255,.62);
  max-width:340px;
}
.footer-col h4{
  color:#fff;
  font-size:15px;
  font-weight:700;
  margin-bottom:var(--sp-4);
}
.footer-col ul li{margin-bottom:6px;}
.footer-col a{color:rgba(255,255,255,.66);font-size:14px;}
.footer-col a:hover{color:#fff;}
.footer-col span{color:rgba(255,255,255,.62);font-size:14px;}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:var(--sp-4);
  padding-top:var(--sp-5);
  flex-wrap:wrap;
  font-size:13px;
  color:rgba(255,255,255,.5);
}

/* ========== 移动抽屉 ========== */
.drawer{
  position:fixed;
  inset:0;
  z-index:100;
  background:var(--c-surface);
  transform:translateY(-100%);
  transition:transform 240ms ease-out;
  display:flex;
  flex-direction:column;
  padding:var(--sp-4) var(--sp-5) var(--sp-7);
  overflow-y:auto;
}
.drawer.is-open{transform:translateY(0);}
.drawer-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:64px;
  margin-bottom:var(--sp-4);
}
.drawer-close{
  width:40px;height:40px;
  border:1px solid var(--c-line);
  border-radius:var(--r-btn);
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--c-ink);
}
.drawer-close svg{width:20px;height:20px;}
.drawer-nav{display:flex;flex-direction:column;gap:4px;margin-bottom:var(--sp-6);}
.drawer-nav a{
  padding:16px 0;
  font-size:17px;
  font-weight:500;
  color:var(--c-ink-2);
  border-bottom:1px solid var(--c-line);
}
.drawer-nav a.is-active{color:var(--c-primary);font-weight:700;}
.drawer-nav a:hover{color:var(--c-primary);}

/* ========== 移动底部 Tab ========== */
.tabbar{
  display:none;
  position:fixed;
  left:0;right:0;bottom:0;
  height:56px;
  z-index:70;
  background:var(--c-surface);
  border-top:1px solid var(--c-line);
  box-shadow:0 -2px 12px -8px rgba(13,42,64,.28);
}
.tabbar-inner{
  display:flex;
  height:56px;
  align-items:stretch;
}
.tab-item{
  flex:1 1 0;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:2px;
  font-size:11px;
  color:var(--c-ink-3);
  transition:color var(--tr);
}
.tab-item svg{width:20px;height:20px;stroke-width:1.75;transition:color var(--tr);}
.tab-item:hover,.tab-item.is-active{color:var(--c-primary);}
.tab-item.is-active svg{color:var(--c-primary);}
.tab-item.is-active svg .solid{fill:currentColor;}

/* ========== 平板断点 ========== */
@media (max-width:1023px){
  .container{padding-left:24px;padding-right:24px;}
  .main-nav{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-cta .btn{display:none;}
  .tabbar{display:block;}
  body{padding-bottom:72px;}
  .section{padding:var(--sp-7) 0;}
  .cat-banner{height:240px;}
  .stat-row{grid-template-columns:repeat(2,minmax(0,1fr));}
  .rec-rail{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-top{grid-template-columns:1fr 1fr;gap:var(--sp-6) var(--sp-5);}
}

/* ========== 手机断点 ========== */
@media (max-width:639px){
  .container{padding-left:16px;padding-right:16px;}
  body{padding-bottom:calc(72px + env(safe-area-inset-bottom));}
  .tabbar{padding-bottom:env(safe-area-inset-bottom);height:calc(56px + env(safe-area-inset-bottom));}
  .section{padding:56px 0;}
  .section-tight{padding:48px 0;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:var(--sp-5);}
  .cat-banner{height:300px;}
  .cat-banner-inner{padding-bottom:var(--sp-5);}
  .cat-banner p{font-size:14px;}
  .stat-row{grid-template-columns:1fr;gap:12px;}
  .stat-card{padding:var(--sp-4);}
  .stat-value{font-size:26px;}
  .anchor-bar{padding:var(--sp-4);gap:12px;}
  .anchor-list{gap:8px;}
  .anchor-list a{height:30px;padding:0 12px;font-size:12px;}
  .tl-item{padding-left:48px;}
  .timeline::before{left:12px;}
  .tl-dot{width:26px;height:26px;font-size:11px;}
  .tl-card{padding:var(--sp-4);}
  .tl-title{font-size:17px;}
  .tl-desc{font-size:14px;}
  .tl-bottom{flex-direction:column;align-items:flex-start;gap:12px;}
  .panel{padding:var(--sp-5) var(--sp-4);}
  .rec-rail{grid-template-columns:1fr;}
  .cta-band{padding:56px 0;}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:var(--sp-5);}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
  .share-group{margin-left:0;width:100%;justify-content:flex-start;}
  .footer-top{grid-template-columns:1fr;gap:var(--sp-5);}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:6px;}
  .faq-accordion .accordion-title{padding:var(--sp-4);font-size:15px;}
  .faq-accordion .accordion-content{padding:0 var(--sp-4) var(--sp-4);}
}

/* ========== 大屏 ========== */
@media (min-width:1200px){
  .container{max-width:1200px;}
}

/* ========== Foundation 覆盖 ========== */
.grid-container{max-width:1200px;padding-left:32px;padding-right:32px;}
.accordion-title:hover,.accordion-title:focus{background:transparent;}
button:focus,button:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}
.accordion-content[aria-hidden="true"]{display:none;}

/* roulang page: category3 */
:root{
  --c-primary:#0F5C8C;
  --c-primary-d:#0A3F62;
  --c-primary-l:#E7F0F7;
  --c-accent:#F05A28;
  --c-accent-2:#12B5A4;
  --c-bg:#F4F7FA;
  --c-surface:#FFFFFF;
  --c-dark:#0A2233;
  --c-ink:#132433;
  --c-ink-2:#54697C;
  --c-ink-3:#8C9CAB;
  --c-line:#E2E9F0;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(13,42,64,.06);
  --sh-2:0 8px 24px -8px rgba(13,42,64,.14);
  --sp-1:4px; --sp-2:8px; --sp-3:12px; --sp-4:16px; --sp-5:24px; --sp-6:32px; --sp-7:48px; --sp-8:64px; --sp-9:96px;
  --t-fast:180ms ease-out;
  --t-base:220ms ease-out;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",Inter,system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--c-ink);
  background:var(--c-bg);
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;height:auto;display:block;border-style:none}
a{color:var(--c-primary);text-decoration:none;transition:color var(--t-fast)}
a:hover{color:var(--c-primary-d)}
button{font-family:inherit;font-size:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}
::selection{background:var(--c-primary);color:#fff}

/* 容器 */
.grid-container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:32px;
  padding-right:32px;
}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:32px;padding-right:32px}

/* 顶部导航 */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:var(--c-surface);
  border-bottom:1px solid transparent;
  transition:border-color var(--t-base),box-shadow var(--t-base);
}
.site-header.is-scrolled{border-bottom-color:var(--c-line);box-shadow:var(--sh-1)}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:var(--sp-5);
  min-height:64px;
}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--c-ink);flex:0 0 auto}
.brand:hover{color:var(--c-ink)}
.brand-mark{
  width:34px;height:34px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:10px;
  background:var(--c-primary);
  color:#fff;
  flex:0 0 auto;
}
.brand-mark svg{width:20px;height:20px}
.brand-text{font-size:18px;font-weight:700;letter-spacing:0;white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:var(--sp-6);flex:1 1 auto;justify-content:center}
.nav-link{
  position:relative;
  font-size:15px;
  color:var(--c-ink-2);
  padding:20px 0;
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:12px;
  height:2px;
  background:var(--c-primary);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform var(--t-base);
}
.nav-link:hover{color:var(--c-primary)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--c-primary);font-weight:500}
.nav-link.is-active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:var(--sp-3);flex:0 0 auto}

/* 按钮 */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 22px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:500;
  line-height:1;
  cursor:pointer;
  transition:background-color var(--t-fast),color var(--t-fast),border-color var(--t-fast),transform var(--t-fast),box-shadow var(--t-fast);
}
.btn:hover{transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn-primary{background:var(--c-accent);color:#fff;box-shadow:var(--sh-1)}
.btn-primary:hover{background:#D44C1E;color:#fff}
.btn-ghost{background:#fff;border-color:var(--c-line);color:var(--c-ink)}
.btn-ghost:hover{background:var(--c-primary-l);border-color:var(--c-primary);color:var(--c-primary-d)}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.6);color:#fff}
.btn-outline-light:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-block{width:100%}
.btn-icon{width:18px;height:18px}

/* 汉堡与抽屉 */
.hamburger{
  display:none;
  width:40px;height:40px;
  border:1px solid var(--c-line);
  background:#fff;
  border-radius:10px;
  padding:0;
  cursor:pointer;
  position:relative;
}
.hamburger span{
  position:absolute;left:11px;right:11px;height:2px;background:var(--c-ink);border-radius:2px;
  transition:transform var(--t-base),opacity var(--t-base);
}
.hamburger span:nth-child(1){top:13px}
.hamburger span:nth-child(2){top:19px}
.hamburger span:nth-child(3){top:25px}
.hamburger.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.hamburger.is-open span:nth-child(2){opacity:0}
.hamburger.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

.drawer{
  position:fixed;
  inset:0;
  z-index:80;
  background:var(--c-surface);
  padding:20px 20px calc(24px + env(safe-area-inset-bottom));
  transform:translateY(-8px);
  opacity:0;
  visibility:hidden;
  transition:opacity var(--t-base),transform var(--t-base),visibility var(--t-base);
  overflow-y:auto;
}
.drawer.is-open{opacity:1;visibility:visible;transform:translateY(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:20px;border-bottom:1px solid var(--c-line)}
.drawer-close{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--c-line);background:#fff;color:var(--c-ink);
  cursor:pointer;font-size:20px;line-height:1;
}
.drawer-nav{padding:12px 0}
.drawer-nav a{
  display:block;
  padding:16px 4px;
  font-size:17px;
  color:var(--c-ink);
  border-bottom:1px solid var(--c-line);
}
.drawer-nav a.is-active{color:var(--c-primary);font-weight:500}
.drawer-cta{margin-top:24px}

/* 页面横幅 */
.page-hero{position:relative;overflow:hidden;background:var(--c-primary-d)}
.page-hero .hero-bg{width:100%;height:100%;object-fit:cover;position:absolute;inset:0}
.hero-veil{
  position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(10,34,51,.86) 0%,rgba(10,34,51,.66) 48%,rgba(10,34,51,.28) 100%);
}
.hero-inner{position:relative;z-index:2;padding-top:44px;padding-bottom:44px;min-height:290px;display:flex;flex-direction:column;justify-content:center;gap:var(--sp-4)}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.72)}
.crumb a{color:rgba(255,255,255,.86)}
.crumb a:hover{color:#fff}
.crumb-current{color:rgba(255,255,255,.6)}
.hero-tag{
  align-self:flex-start;
  font-size:12px;
  color:#fff;
  background:rgba(18,181,164,.9);
  border-radius:var(--r-pill);
  padding:4px 12px;
  letter-spacing:.02em;
}
.page-hero h1{
  font-size:clamp(28px,4.4vw,44px);
  line-height:1.25;
  font-weight:700;
  color:#fff;
  max-width:820px;
}
.hero-sub{font-size:16px;color:rgba(255,255,255,.86);max-width:680px}
.hero-facts{display:flex;flex-wrap:wrap;gap:var(--sp-6);margin-top:8px}
.fact{display:flex;align-items:baseline;gap:8px}
.fact strong{font-size:24px;font-weight:700;color:var(--c-accent)}
.fact span{font-size:13px;color:rgba(255,255,255,.8)}

/* 通用板块 */
.section{padding:var(--sp-9) 0}
.section-tight{padding:var(--sp-8) 0}
.section-alt{background:var(--c-surface)}
.section-head{margin-bottom:var(--sp-7)}
.section-head h2{font-size:clamp(22px,3vw,32px);line-height:1.35;font-weight:700}
.section-head p{margin-top:var(--sp-3);font-size:15px;color:var(--c-ink-2);max-width:760px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;color:var(--c-primary);background:var(--c-primary-l);
  border-radius:var(--r-pill);padding:4px 12px;margin-bottom:var(--sp-3);
}

/* 标签筛选条 */
.filter-bar{display:flex;flex-wrap:wrap;gap:var(--sp-2);margin-bottom:var(--sp-6)}
.filter-pill{
  border:1px solid var(--c-line);
  background:var(--c-surface);
  color:var(--c-ink-2);
  border-radius:var(--r-pill);
  height:36px;
  padding:0 18px;
  font-size:14px;
  cursor:pointer;
  transition:background-color var(--t-fast),color var(--t-fast),border-color var(--t-fast);
}
.filter-pill:hover{border-color:var(--c-primary);color:var(--c-primary);background:var(--c-primary-l)}
.filter-pill.is-active{background:var(--c-primary);border-color:var(--c-primary);color:#fff}
.filter-pill:active{transform:translateY(1px)}

/* 大图卡片 */
.card-grid{margin-bottom:calc(-1 * var(--sp-6))}
.gcard-cell{padding-bottom:var(--sp-6)}
.gcard{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-1);
  height:100%;
  display:flex;
  flex-direction:column;
  transition:box-shadow var(--t-base),transform var(--t-base);
}
.gcard:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}
.gcard-media{position:relative;display:block;overflow:hidden;aspect-ratio:21/9;background:var(--c-primary-l)}
.gcard-media img{width:100%;height:100%;object-fit:cover;transition:transform 300ms ease-out}
.gcard:hover .gcard-media img{transform:scale(1.03)}
.gcard-media .badge{
  position:absolute;left:16px;top:16px;
  background:rgba(255,255,255,.94);
  color:var(--c-primary);
  font-size:12px;
  border-radius:var(--r-pill);
  padding:4px 12px;
  box-shadow:var(--sh-1);
}
.gcard-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:var(--sp-3);flex:1 1 auto}
.gcard-body h3{font-size:19px;line-height:1.5;font-weight:500}
.gcard-body h3 a{color:var(--c-ink)}
.gcard-body h3 a:hover{color:var(--c-primary)}
.gcard-body p{font-size:14px;color:var(--c-ink-2);line-height:1.75}
.gcard-body .meta{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--c-ink-3);margin-top:auto}
.meta-sep{width:4px;height:4px;border-radius:50%;background:var(--c-ink-3);display:inline-block}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:500;color:var(--c-primary)}
.text-link svg{width:14px;height:14px;transition:transform var(--t-fast)}
.text-link:hover svg{transform:translateX(4px)}
.empty-tip{padding:var(--sp-8) 0;text-align:center;color:var(--c-ink-3);font-size:14px}

/* 流程步骤 */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--sp-5)}
.step{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:24px;
  box-shadow:var(--sh-1);
  position:relative;
  transition:box-shadow var(--t-base),transform var(--t-base);
}
.step:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}
.step-num{font-size:13px;font-weight:700;color:var(--c-accent);letter-spacing:.06em}
.step h3{font-size:17px;font-weight:500;margin-top:10px}
.step p{font-size:14px;color:var(--c-ink-2);margin-top:8px;line-height:1.75}

/* 速查表 */
.table-wrap{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  overflow:hidden;
}
.spec-table{width:100%;border-collapse:collapse;font-size:15px}
.spec-table thead th{
  background:var(--c-primary-l);
  color:var(--c-primary-d);
  font-weight:500;
  font-size:14px;
  text-align:left;
  padding:14px 20px;
  white-space:nowrap;
}
.spec-table tbody td{padding:14px 20px;border-top:1px solid var(--c-line);color:var(--c-ink-2);vertical-align:top}
.spec-table tbody td:first-child{color:var(--c-ink);font-weight:500}
.spec-table tbody tr:nth-child(even){background:#FAFCFE}
.spec-table tbody tr{transition:background-color var(--t-fast)}
.spec-table tbody tr:hover{background:var(--c-primary-l)}
.table-note{font-size:13px;color:var(--c-ink-3);padding:14px 20px;border-top:1px solid var(--c-line);background:var(--c-surface)}

/* 相关推荐卡带 */
.rail{
  display:flex;
  gap:var(--sp-5);
  overflow-x:auto;
  padding-bottom:var(--sp-4);
  scroll-snap-type:x mandatory;
  overscroll-behavior:contain;
}
.rail::-webkit-scrollbar{height:6px}
.rail::-webkit-scrollbar-thumb{background:var(--c-line);border-radius:999px}
.rail-card{
  flex:0 0 calc((100% - 2 * var(--sp-5)) / 3);
  scroll-snap-align:start;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:box-shadow var(--t-base),transform var(--t-base);
  display:flex;
  flex-direction:column;
}
.rail-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}
.rail-card .rmedia{aspect-ratio:3/2;overflow:hidden;background:var(--c-primary-l)}
.rail-card .rmedia img{width:100%;height:100%;object-fit:cover;transition:transform 300ms ease-out}
.rail-card:hover .rmedia img{transform:scale(1.03)}
.rail-card .rbody{padding:16px 18px 18px;display:flex;flex-direction:column;gap:8px;flex:1 1 auto}
.rail-card h3{font-size:16px;font-weight:500;line-height:1.55}
.rail-card h3 a{color:var(--c-ink)}
.rail-card h3 a:hover{color:var(--c-primary)}
.rail-card .meta{font-size:12px;color:var(--c-ink-3);margin-top:auto}

/* 深色 CTA */
.cta-band{background:var(--c-dark);color:#fff;padding:var(--sp-8) 0}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:var(--sp-6);flex-wrap:wrap}
.cta-copy h2{font-size:clamp(22px,2.6vw,28px);line-height:1.35;font-weight:700;color:#fff}
.cta-copy p{margin-top:10px;font-size:15px;color:rgba(255,255,255,.76);max-width:620px}
.cta-actions{display:flex;align-items:center;gap:var(--sp-4);flex-wrap:wrap}
.share-group{display:flex;align-items:center;gap:12px}
.share-btn{
  width:36px;height:36px;border-radius:50%;
  border:1px solid rgba(255,255,255,.5);
  background:transparent;color:#fff;
  display:inline-flex;align-items:center;justify-content:center;
  cursor:pointer;
  transition:background-color var(--t-fast),border-color var(--t-fast),transform var(--t-fast);
}
.share-btn:hover{background:var(--c-accent);border-color:var(--c-accent);transform:translateY(-1px)}
.share-btn svg{width:17px;height:17px}

/* FAQ */
.accordion{background:transparent;border:0;margin:0}
.accordion-item{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-left:3px solid var(--c-line);
  border-radius:var(--r-card);
  margin-bottom:12px;
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:border-color var(--t-base),box-shadow var(--t-base);
}
.accordion-item.is-active{border-left-color:var(--c-primary);box-shadow:var(--sh-2)}
.accordion-title{
  font-size:16px;
  font-weight:500;
  color:var(--c-ink);
  padding:18px 56px 18px 22px;
  border:0;
  background:transparent;
  position:relative;
  display:block;
}
.accordion-title:hover{background:var(--c-primary-l);color:var(--c-primary-d)}
.accordion-title::before{
  content:"+";
  position:absolute;
  right:22px;top:50%;
  transform:translateY(-50%);
  font-size:20px;
  font-weight:400;
  color:var(--c-primary);
  transition:transform var(--t-base);
}
.accordion-item.is-active .accordion-title::before{content:"+";transform:translateY(-50%) rotate(45deg)}
.accordion-content{
  border:0;
  background:transparent;
  padding:0 22px 20px;
  font-size:15px;
  line-height:1.8;
  color:var(--c-ink-2);
}
.accordion-content p{font-size:15px;color:var(--c-ink-2)}

/* 页脚 */
.site-footer{background:var(--c-dark);color:rgba(255,255,255,.78);padding:var(--sp-8) 0 var(--sp-5);font-size:14px;line-height:2}
.footer-top{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:var(--sp-7)}
.site-footer .brand{color:#fff}
.site-footer .brand:hover{color:#fff}
.site-footer .brand-mark{background:var(--c-accent)}
.footer-brand p{margin-top:16px;font-size:14px;color:rgba(255,255,255,.68);max-width:340px;line-height:1.9}
.footer-col h4{font-size:15px;color:#fff;font-weight:500;margin-bottom:14px}
.footer-col ul li a,.footer-col ul li span{color:rgba(255,255,255,.72);font-size:14px}
.footer-col ul li a:hover{color:#fff}
.footer-bottom{
  margin-top:var(--sp-7);
  padding-top:20px;
  border-top:1px solid rgba(255,255,255,.14);
  display:flex;
  justify-content:space-between;
  gap:var(--sp-4);
  flex-wrap:wrap;
  font-size:13px;
  color:rgba(255,255,255,.58);
}

/* 移动底部 Tab */
.tabbar{
  display:none;
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:70;
  height:56px;
  background:var(--c-surface);
  border-top:1px solid var(--c-line);
  padding-bottom:env(safe-area-inset-bottom);
}
.tabbar-inner{display:flex;height:56px}
.tab-item{
  flex:1 1 0;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:2px;
  font-size:11px;
  color:var(--c-ink-3);
  min-width:0;
}
.tab-item svg{width:22px;height:22px;stroke-width:1.75}
.tab-item:hover{color:var(--c-primary)}
.tab-item.is-active{color:var(--c-primary);font-weight:500}
.tab-item.is-active svg{fill:transparent;stroke:var(--c-primary)}

/* 响应式 */
@media (max-width:1199px){
  .grid-container,.container{padding-left:24px;padding-right:24px}
  .main-nav{gap:var(--sp-5)}
}
@media (max-width:1023px){
  .main-nav{display:none}
  .hamburger{display:block}
  .header-actions .btn{display:none}
  .tabbar{display:block}
  body{padding-bottom:calc(72px + env(safe-area-inset-bottom))}
  .footer-top{grid-template-columns:1fr 1fr;gap:var(--sp-6)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .section{padding:var(--sp-8) 0}
  .rail-card{flex:0 0 58%}
}
@media (max-width:639px){
  .grid-container,.container{padding-left:16px;padding-right:16px}
  .brand-text{font-size:16px}
  .hero-inner{padding-top:32px;padding-bottom:32px;min-height:270px}
  .hero-facts{gap:var(--sp-5)}
  .fact strong{font-size:20px}
  .section{padding:56px 0}
  .section-head{margin-bottom:var(--sp-5)}
  .gcard-body{padding:16px}
  .gcard-body h3{font-size:17px}
  .steps{grid-template-columns:1fr}
  .footer-top{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:8px}
  .rail-card{flex:0 0 82%}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .spec-table{font-size:14px}
  .spec-table thead th,.spec-table tbody td{padding:12px 14px}
  .table-wrap{overflow-x:auto}
  .spec-table{min-width:560px}
}