/* roulang page: index */
:root{
  --primary:#1F5AD6;
  --primary-dark:#16409C;
  --primary-light:#E8F0FE;
  --accent:#0FA37F;
  --amber:#F0A020;
  --bg:#F6F8FC;
  --card:#FFFFFF;
  --text:#1F2937;
  --text-2:#5B6B82;
  --text-3:#8A97AB;
  --line:#E4EAF3;
  --danger:#D64545;
  --footer-bg:#EAF1FC;
  --shadow-1:0 1px 2px rgba(19,50,110,.04),0 8px 24px rgba(19,50,110,.06);
  --shadow-2:0 4px 8px rgba(19,50,110,.06),0 16px 36px rgba(19,50,110,.10);
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --radius-block:16px;
  --header-h:72px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  padding-top:var(--header-h);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:30px;
  color:var(--text);
  background:var(--bg);
  text-align:left;
  overflow-x:hidden;
}
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;}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--text);}
h1{font-size:34px;line-height:42px;font-weight:700;letter-spacing:.01em;}
h2{font-size:26px;line-height:34px;}
h3{font-size:20px;line-height:28px;font-weight:600;}
h4{font-size:17px;line-height:26px;font-weight:600;}
p{margin:0 0 1em;max-width:46em;color:var(--text);}
ul,ol{margin:0;padding:0;list-style:none;}
.num{font-variant-numeric:tabular-nums;}
:focus-visible{outline:3px solid rgba(31,90,214,.45);outline-offset:2px;border-radius:6px;}

/* ---------- 容器与板块 ---------- */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
.section{padding:88px 0;}
.section-tight{padding:64px 0;}
.section-head{margin-bottom:24px;display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;}
.section-head p{margin:8px 0 0;color:var(--text-2);font-size:16px;line-height:28px;max-width:46em;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;line-height:18px;letter-spacing:.04em;font-weight:600;
  color:var(--primary);background:var(--primary-light);
  padding:5px 12px;border-radius:999px;margin-bottom:16px;
}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--primary);}
.divider{height:1px;background:var(--line);border:0;margin:0;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 28px;border-radius:var(--radius-btn);
  font-size:16px;font-weight:600;line-height:24px;
  transition:background-color .18s ease,color .18s ease,box-shadow .18s ease,transform .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:var(--shadow-1);}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-primary:active{transform:none;box-shadow:var(--shadow-1);}
.btn-ghost{background:#fff;color:var(--primary);border:1px solid var(--primary);}
.btn-ghost:hover{background:var(--primary-light);transform:translateY(-1px);}
.btn-ghost:active{transform:none;background:var(--primary-light);}
.btn-light{background:#fff;color:var(--primary);}
.btn-light:hover{background:#F2F7FF;transform:translateY(-1px);}
.btn-sm{min-height:40px;padding:0 20px;font-size:15px;}
.btn[disabled],.btn.is-disabled{background:var(--line);color:var(--text-3);box-shadow:none;cursor:not-allowed;transform:none;}
.btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-weight:600;font-size:15px;}
.btn-text svg{transition:transform .18s ease;}
.btn-text:hover svg{transform:translateX(4px);}
.btn-text:hover span{border-bottom:2px solid currentColor;}
.btn-text span{border-bottom:2px solid transparent;padding-bottom:1px;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  height:var(--header-h);background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:0 8px 24px rgba(19,50,110,.08);}
.header-inner{height:100%;display:flex;align-items:center;gap:24px;}
.logo{display:inline-flex;align-items:baseline;gap:6px;font-weight:700;font-size:19px;letter-spacing:.01em;color:var(--primary-dark);flex:0 0 auto;}
.logo-mark{
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--primary);color:#fff;font-size:15px;font-weight:700;
  padding:3px 9px;border-radius:8px;letter-spacing:.06em;
}
.logo-text{color:var(--text);font-size:17px;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:16px;flex:1 1 auto;}
.nav-link{
  position:relative;padding:8px 12px;font-size:15px;font-weight:500;color:var(--text-2);
  border-radius:8px;transition:color .18s ease;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--primary);border-radius:2px;transform:scaleX(0);transform-origin:left center;
  transition:transform .2s ease;
}
.nav-link:hover{color:var(--primary);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--primary);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}
.menu-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;
  align-items:center;justify-content:center;color:var(--text-2);background:#fff;
}
.menu-toggle:hover{color:var(--primary);border-color:rgba(31,90,214,.3);}
.mobile-menu{
  display:none;position:fixed;top:var(--header-h);left:0;right:0;z-index:59;
  background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--shadow-2);
  padding:12px 16px 20px;
}
.mobile-menu.is-open{display:block;}
.mobile-menu a{
  display:block;padding:14px 8px;font-size:16px;font-weight:500;color:var(--text-2);
  border-bottom:1px solid var(--line);
}
.mobile-menu a:last-of-type{border-bottom:0;}
.mobile-menu a.is-active{color:var(--primary);font-weight:600;}
.mobile-menu .btn{width:100%;margin-top:12px;}

/* ---------- Hero ---------- */
.hero{
  position:relative;isolation:isolate;color:#fff;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  min-height:520px;display:flex;align-items:center;
}
.hero::before{content:"";position:absolute;inset:0;background:rgba(22,64,156,.55);z-index:-1;}
.hero-inner{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;padding:72px 0;}
.hero h1{color:#fff;}
.hero .eyebrow{background:rgba(255,255,255,.16);color:#fff;}
.hero .eyebrow .dot{background:#fff;}
.hero-sub{margin:18px 0 28px;font-size:17px;line-height:30px;color:rgba(255,255,255,.92);max-width:34em;}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;}
.hero-metrics{display:flex;gap:36px;margin-top:40px;flex-wrap:wrap;}
.hero-metric strong{display:block;font-size:26px;line-height:34px;font-weight:700;color:#fff;}
.hero-metric span{font-size:14px;line-height:22px;color:rgba(255,255,255,.85);}
.hero-media{
  border-radius:var(--radius-img);overflow:hidden;
  border:1px solid rgba(255,255,255,.35);
  box-shadow:var(--shadow-2);background:rgba(255,255,255,.12);
}
.hero-media img{width:100%;aspect-ratio:16/11;object-fit:cover;}

/* ---------- 流程 ---------- */
.flow-grid{display:grid;grid-template-columns:40% 1fr;gap:48px;align-items:start;}
.flow-media{border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-1);background:#fff;}
.flow-media img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.flow-media-cap{padding:16px 20px;font-size:14px;line-height:22px;color:var(--text-2);border-top:1px solid var(--line);background:#fff;}
.flow-list{position:relative;padding-left:36px;}
.flow-list::before{content:"";position:absolute;left:15px;top:14px;bottom:14px;width:2px;background:var(--line);}
.flow-item{position:relative;padding:0 0 28px 20px;}
.flow-item:last-child{padding-bottom:0;}
.flow-num{
  position:absolute;left:-36px;top:0;width:32px;height:32px;border-radius:50%;
  background:#fff;border:2px solid var(--primary);color:var(--primary);
  display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;
}
.flow-item h3{margin-bottom:6px;}
.flow-item p{margin:0;color:var(--text-2);font-size:15px;line-height:26px;}

/* ---------- 功能预览卡片 ---------- */
.feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);padding:24px;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(31,90,214,.2);}
.feature-card{padding:0;overflow:hidden;display:flex;flex-direction:column;}
.feature-card img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.feature-body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto;}
.feature-body h3{font-size:18px;line-height:26px;}
.feature-body p{margin:0;font-size:14px;line-height:24px;color:var(--text-2);}
.feature-amount{font-size:22px;line-height:30px;font-weight:700;color:var(--primary-dark);}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  font-size:12px;line-height:18px;letter-spacing:.04em;font-weight:600;white-space:nowrap;
}
.badge-doing{color:var(--accent);background:rgba(15,163,127,.1);}
.badge-limit{color:var(--amber);background:rgba(240,160,32,.1);}
.badge-end{color:var(--text-3);background:var(--line);}
.badge-tag{color:var(--primary);background:var(--primary-light);}
.feature-foot{margin-top:auto;padding-top:12px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--text-3);}

/* ---------- 任务进度 ---------- */
.progress-block{
  background:var(--primary-light);border-radius:var(--radius-block);
  padding:40px 44px;border:1px solid rgba(31,90,214,.12);
}
.progress-head{display:flex;justify-content:space-between;align-items:flex-end;gap:20px;flex-wrap:wrap;margin-bottom:24px;}
.progress-head h2{font-size:24px;line-height:32px;}
.progress-head p{margin:6px 0 0;color:var(--text-2);font-size:15px;line-height:26px;}
.progress-ratio{font-size:22px;font-weight:700;color:var(--primary-dark);}
.progress-track{position:relative;height:8px;border-radius:999px;background:var(--line);margin:20px 0 36px;}
.progress-fill{
  position:absolute;left:0;top:0;bottom:0;width:75%;border-radius:999px;
  background:linear-gradient(90deg,var(--primary),var(--accent));
}
.progress-node{
  position:absolute;top:50%;width:16px;height:16px;border-radius:50%;background:#fff;
  border:2px solid var(--primary);transform:translate(-50%,-50%);
}
.progress-node.n1{left:0;}
.progress-node.n2{left:33.33%;}
.progress-node.n3{left:66.66%;}
.progress-node.n4{left:100%;}
.progress-node.is-current{box-shadow:0 0 0 5px rgba(31,90,214,.18);}
.task-list{display:grid;grid-template-columns:repeat(2,1fr);gap:12px 32px;}
.task-item{display:flex;align-items:center;gap:12px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-btn);padding:14px 18px;}
.task-item .tick{
  width:22px;height:22px;border-radius:6px;display:flex;align-items:center;justify-content:center;
  flex:0 0 auto;border:1px solid var(--line);background:#fff;color:transparent;
}
.task-item.is-done .tick{background:var(--accent);border-color:var(--accent);color:#fff;}
.task-name{font-size:15px;font-weight:500;}
.task-status{margin-left:auto;font-size:13px;color:var(--text-3);}
.task-item.is-done .task-status{color:var(--accent);font-weight:600;}

/* ---------- 场景 ---------- */
.scene-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
.scene-media{border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-1);}
.scene-media img{width:100%;aspect-ratio:16/11;object-fit:cover;}
.check-list{display:flex;flex-direction:column;gap:16px;margin-top:20px;}
.check-item{display:flex;gap:14px;align-items:flex-start;}
.check-icon{
  width:26px;height:26px;border-radius:50%;flex:0 0 auto;margin-top:2px;
  background:var(--primary-light);color:var(--primary);
  display:flex;align-items:center;justify-content:center;
}
.check-item h4{margin-bottom:2px;font-size:16px;line-height:26px;}
.check-item p{margin:0;font-size:14px;line-height:24px;color:var(--text-2);}

/* ---------- 通栏 CTA ---------- */
.cta-band{
  position:relative;isolation:isolate;color:#fff;text-align:center;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  padding:72px 0;
}
.cta-band::before{content:"";position:absolute;inset:0;background:rgba(31,90,214,.42);z-index:-1;}
.cta-band h2{color:#fff;font-size:28px;line-height:36px;}
.cta-band p{margin:14px auto 28px;color:rgba(255,255,255,.92);font-size:16px;line-height:28px;max-width:36em;}
.cta-note{display:block;margin-top:16px;font-size:13px;line-height:22px;color:rgba(255,255,255,.82);}

/* ---------- 最新信息 ---------- */
.news-feature{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);overflow:hidden;margin-bottom:24px;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.news-feature:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(31,90,214,.2);}
.news-feature-link{display:grid;grid-template-columns:1fr 1fr;gap:0;}
.news-feature-media{overflow:hidden;background:#EDF1F7;}
.news-feature-media img{width:100%;height:100%;min-height:260px;aspect-ratio:16/10;object-fit:cover;}
.news-feature-body{padding:32px;display:flex;flex-direction:column;gap:14px;justify-content:center;}
.news-feature-body h3{font-size:22px;line-height:32px;}
.news-feature-body p{margin:0;color:var(--text-2);font-size:15px;line-height:26px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.news-list{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;}
.news-item{
  display:flex;gap:16px;align-items:flex-start;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-card);padding:18px;box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.news-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(31,90,214,.2);}
.news-thumb{flex:0 0 auto;width:96px;height:64px;border-radius:var(--radius-img);overflow:hidden;background:#EDF1F7;}
.news-thumb img{width:100%;height:100%;object-fit:cover;}
.news-body{min-width:0;flex:1 1 auto;display:flex;flex-direction:column;gap:8px;}
.news-body h3{font-size:16px;line-height:24px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-item:hover .news-body h3{color:var(--primary);}
.news-body p{margin:0;font-size:13px;line-height:22px;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-meta{display:flex;align-items:center;gap:10px;margin-top:auto;font-size:13px;color:var(--text-3);}
.news-arrow{margin-left:auto;color:var(--primary);display:inline-flex;transition:transform .18s ease;}
.news-item:hover .news-arrow{transform:translateX(4px);}
.empty-state{
  background:#fff;border:1px dashed var(--line);border-radius:var(--radius-card);
  padding:56px 24px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:16px;
}
.empty-icon{
  width:64px;height:64px;border-radius:16px;background:var(--primary-light);color:var(--primary);
  display:flex;align-items:center;justify-content:center;
}
.empty-state p{margin:0;color:var(--text-2);font-size:15px;}

/* ---------- FAQ ---------- */
.faq-list{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-1);overflow:hidden;}
.faq-item + .faq-item{border-top:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 26px;text-align:left;font-size:17px;line-height:26px;font-weight:600;color:var(--text);
  transition:color .18s ease,background-color .18s ease;
}
.faq-q:hover{color:var(--primary);background:#FAFCFF;}
.faq-q .faq-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;color:var(--primary);
  transition:transform .22s ease,background-color .22s ease;
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);background:var(--primary-light);}
.faq-a{display:none;padding:0 26px 24px;font-size:15px;line-height:26px;color:var(--text-2);}
.faq-item.is-open .faq-a{display:block;}
.faq-a p{margin:0;font-size:15px;line-height:26px;color:var(--text-2);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--footer-bg);border-top:1px solid var(--line);padding:64px 0 24px;margin-top:24px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand p{font-size:14px;line-height:24px;color:var(--text-2);margin:0 0 16px;max-width:32em;}
.footer-col h4{font-size:15px;line-height:24px;margin-bottom:16px;color:var(--text);}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14px;line-height:22px;color:var(--text-2);transition:color .18s ease;}
.footer-col a:hover{color:var(--primary);}
.footer-col li span{font-size:14px;line-height:22px;color:var(--text-2);}
.footer-bottom{
  margin-top:48px;padding-top:20px;border-top:1px solid rgba(31,90,214,.14);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.footer-bottom p{margin:0;font-size:13px;line-height:22px;color:var(--text-3);}
.to-top{
  display:inline-flex;align-items:center;gap:6px;font-size:13px;line-height:22px;color:var(--text-2);
  border:1px solid var(--line);background:#fff;border-radius:999px;padding:7px 16px;
  transition:color .18s ease,border-color .18s ease,background-color .18s ease;
}
.to-top:hover{color:var(--primary);border-color:rgba(31,90,214,.35);background:#fff;}

/* ---------- 移动底部 Tab ---------- */
.tabbar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:#fff;border-top:1px solid var(--line);
  box-shadow:0 -6px 20px rgba(19,50,110,.08);
  padding-bottom:env(safe-area-inset-bottom);
}
.tabbar-inner{display:grid;grid-template-columns:repeat(4,1fr);}
.tab-item{
  position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:3px;height:60px;font-size:12px;line-height:16px;color:var(--text-2);
}
.tab-item svg{width:22px;height:22px;}
.tab-item.is-active{color:var(--primary);font-weight:600;}
.tab-item.is-active::before{content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);width:26px;height:3px;border-radius:0 0 3px 3px;background:var(--primary);}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .container{padding:0 24px;}
  .section{padding:64px 0;}
  .section-tight{padding:52px 0;}
  .main-nav .nav-link:nth-child(n+4){display:none;}
  .flow-grid{grid-template-columns:1fr;gap:32px;}
  .feature-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px;}
  .news-feature-link{grid-template-columns:1fr;}
  .news-list{grid-template-columns:1fr;}
  .progress-block{padding:32px 28px;}
}
@media (max-width:768px){
  :root{--header-h:64px;}
  body{padding-top:var(--header-h);}
  h1{font-size:26px;line-height:34px;}
  h2{font-size:22px;line-height:30px;}
  body{font-size:15px;line-height:28px;}
  .container{padding:0 16px;}
  .section{padding:48px 0;}
  .section-tight{padding:40px 0;}
  .main-nav{display:none;}
  .menu-toggle{display:inline-flex;}
  .header-actions .btn-primary{display:none;}
  .hero{min-height:400px;}
  .hero-inner{grid-template-columns:1fr;gap:28px;padding:48px 0;}
  .hero-media{order:-1;}
  .hero-metrics{gap:24px;margin-top:28px;}
  .hero-metric strong{font-size:22px;line-height:30px;}
  .hero-actions .btn{width:100%;}
  main{padding-bottom:76px;}
  .tabbar{display:block;}
  .task-list{grid-template-columns:1fr;}
  .scene-grid{grid-template-columns:1fr;gap:28px;}
  .feature-grid{
    display:flex;gap:16px;overflow-x:auto;scroll-snap-type:x mandatory;
    padding-bottom:8px;margin:0 -16px;padding-left:16px;padding-right:16px;
    -webkit-overflow-scrolling:touch;scrollbar-width:none;
  }
  .feature-grid::-webkit-scrollbar{display:none;}
  .feature-card{flex:0 0 auto;width:78vw;scroll-snap-align:start;}
  .news-feature-media img{min-height:200px;}
  .news-feature-body{padding:22px;}
  .faq-q{padding:18px 18px;font-size:16px;line-height:24px;}
  .faq-a{padding:0 18px 20px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:520px){
  .news-item{flex-direction:column;}
  .news-thumb{width:100%;height:auto;aspect-ratio:16/10;}
  .progress-head h2{font-size:20px;line-height:28px;}
  .cta-band h2{font-size:22px;line-height:30px;}
}

/* roulang page: article */
:root{
  --primary:#1F5AD6;
  --primary-dark:#16409C;
  --primary-light:#E8F0FE;
  --accent:#0FA37F;
  --amber:#F0A020;
  --bg:#F6F8FC;
  --card:#FFFFFF;
  --text:#1F2937;
  --text-2:#5B6B82;
  --text-3:#8A97AB;
  --line:#E4EAF3;
  --error:#D64545;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --radius-pill:999px;
  --shadow:0 1px 2px rgba(19,50,110,.04), 0 8px 24px rgba(19,50,110,.06);
  --shadow-hover:0 4px 8px rgba(19,50,110,.06), 0 16px 36px rgba(19,50,110,.10);
  --container:1200px;
  --header-h:72px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.875;
  text-align:left;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .2s ease,border-color .2s ease}
a:focus-visible,button:focus-visible{outline:3px solid rgba(31,90,214,.24);outline-offset:2px;border-radius:6px}
button{font-family:inherit;cursor:pointer;border:0;background:none}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.35;color:var(--text)}
p{margin:0 0 1em}
ul,ol{margin:0;padding:0;list-style:none}
svg{flex:none}
.tnum{font-variant-numeric:tabular-nums}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px}

/* ============ Header / Nav ============ */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 20px rgba(19,50,110,.08)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:var(--header-h);gap:24px}
.logo{display:inline-flex;align-items:center;gap:8px;font-weight:700;font-size:20px;letter-spacing:.01em}
.logo-mark{background:var(--primary);color:#fff;border-radius:9px;padding:5px 10px;font-size:16px;font-weight:700}
.logo-text{color:var(--primary-dark)}
.main-nav{display:flex;align-items:center;gap:6px}
.nav-link{
  position:relative;display:inline-block;padding:10px 14px;font-size:15px;color:var(--text-2);
  border-radius:8px;transition:color .2s ease,background-color .2s ease;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:5px;height:2px;border-radius:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.nav-link:hover{color:var(--primary);background:var(--primary-light)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--primary);font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--radius-btn);
  color:var(--primary-dark);background:var(--primary-light);align-items:center;justify-content:center;
}
.nav-toggle:hover{background:#dbe7fd}

/* ============ Breadcrumb ============ */
.crumb-wrap{padding:22px 0 0}
.breadcrumb{font-size:13px;color:var(--text-2)}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:6px}
.breadcrumb li{display:inline-flex;align-items:center;gap:6px;max-width:100%}
.breadcrumb a{color:var(--text-2)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:var(--text-3)}
.breadcrumb .current{color:var(--text-3);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:280px}

/* ============ Article head ============ */
.article-head{padding:26px 0 40px;border-bottom:1px solid var(--line)}
.badge{
  display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 12px;border-radius:var(--radius-pill);
  font-size:12px;letter-spacing:.04em;line-height:1;
}
.badge-tag{background:var(--primary-light);color:var(--primary)}
.badge-amber{background:rgba(240,160,32,.1);color:#B87407}
.badge-green{background:rgba(15,163,127,.1);color:var(--accent)}
.article-head h1{
  font-size:30px;line-height:1.4;margin:16px 0 14px;letter-spacing:.01em;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;font-size:13px;color:var(--text-3)}
.article-meta span{display:inline-flex;align-items:center;gap:6px}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--line)}
.skeleton-line{height:16px;border-radius:6px;background:#EDF1F7;margin:14px 0}
.skeleton-line.w-60{width:60%}
.skeleton-line.w-40{width:40%}

/* ============ Layout ============ */
.article-section{padding:48px 0 8px}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:48px;align-items:start}
.article-main{min-width:0}
.cover-figure{margin:0 0 32px}
.cover-figure img{
  width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--radius-img);
  border:1px solid var(--line);background:#EDF1F7;
}
.cover-figure figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px}

/* ============ Article body typography ============ */
.article-body{max-width:760px;font-size:16px;line-height:1.9;color:var(--text);word-wrap:break-word}
.article-body > *:first-child{margin-top:0}
.article-body h2{
  position:relative;font-size:22px;line-height:1.5;margin:40px 0 16px;padding-left:14px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:2px;background:var(--primary);
}
.article-body h3{font-size:19px;line-height:1.5;margin:30px 0 12px;font-weight:600}
.article-body h4{font-size:17px;line-height:1.5;margin:24px 0 10px;font-weight:600;color:var(--primary-dark)}
.article-body p{margin:0 0 18px}
.article-body a{color:var(--primary);border-bottom:1px solid rgba(31,90,214,.28)}
.article-body a:hover{color:var(--primary-dark);border-bottom-color:var(--primary-dark)}
.article-body strong{font-weight:700;color:var(--primary-dark)}
.article-body ul,.article-body ol{padding-left:22px;margin:0 0 18px}
.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(--primary)}
.article-body blockquote{
  margin:24px 0;padding:16px 20px;background:var(--primary-light);
  border-left:3px solid var(--primary);border-radius:0 10px 10px 0;color:var(--text-2);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--radius-img);border:1px solid var(--line);margin:20px auto}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;margin:22px 0}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left;line-height:1.7}
.article-body th{background:var(--primary-light);font-weight:600;color:var(--primary-dark)}
.article-body tbody tr:nth-child(even){background:#FAFBFE}
.article-body code{background:var(--bg);border:1px solid var(--line);border-radius:6px;padding:2px 6px;font-size:14px}
.article-body pre{background:#F6F8FC;border:1px solid var(--line);border-radius:12px;padding:16px;overflow-x:auto;line-height:1.7}
.article-body pre code{background:none;border:0;padding:0}
.article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0}

/* ============ Sidebar ============ */
.side-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:20px;box-shadow:var(--shadow);margin-bottom:20px;
}
.side-card h3{font-size:15px;font-weight:600;margin-bottom:12px;display:flex;align-items:center;gap:8px}
.side-card h3::before{content:"";width:3px;height:14px;border-radius:2px;background:var(--primary)}
.toc-list li{margin-bottom:2px}
.toc-list a{
  display:block;font-size:14px;line-height:1.6;color:var(--text-2);padding:6px 10px;border-radius:8px;
  border-left:2px solid transparent;transition:all .2s ease;
}
.toc-list a:hover{color:var(--primary);background:var(--primary-light);border-left-color:var(--primary)}
.toc-list li.lv3 a{padding-left:22px;font-size:13px;color:var(--text-3)}
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px}
.tag{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:var(--radius-pill);
  background:var(--primary-light);color:var(--primary);font-size:12px;letter-spacing:.02em;
  transition:background-color .2s ease,color .2s ease;
}
.tag:hover{background:var(--primary);color:#fff}
.side-list li + li{margin-top:12px;padding-top:12px;border-top:1px dashed var(--line)}
.side-list a{font-size:14px;line-height:1.6;color:var(--text);display:block}
.side-list a:hover{color:var(--primary)}
.side-list .date{display:block;font-size:12px;color:var(--text-3);margin-top:4px}

/* ============ Post footer blocks ============ */
.post-foot{margin-top:40px;padding-top:28px;border-top:1px solid var(--line);max-width:760px}
.post-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:8px}
.related-title{font-size:18px;margin:34px 0 16px}
.related-list{display:grid;gap:16px}
.related-item{
  display:flex;gap:16px;align-items:flex-start;padding:14px;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-card);box-shadow:var(--shadow);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.related-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(31,90,214,.28)}
.related-item img{width:96px;height:64px;object-fit:cover;border-radius:var(--radius-img);background:#EDF1F7}
.related-item h4{font-size:16px;line-height:1.5;font-weight:600;margin-bottom:6px}
.related-item:hover h4{color:var(--primary)}
.related-item p{font-size:13px;color:var(--text-3);margin:0}
.related-item .date{font-size:12px;color:var(--text-3);font-variant-numeric:tabular-nums}
.post-actions{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:28px}

/* ============ Buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;transition:all .2s ease;white-space:nowrap;
}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:#fff;color:var(--primary);border:1px solid var(--primary)}
.btn-ghost:hover{background:var(--primary-light)}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-size:14px;font-weight:600;
}
.btn-text span{border-bottom:2px solid transparent;padding-bottom:2px;transition:border-color .2s ease}
.btn-text:hover span{border-bottom-color:var(--primary)}
.btn-text:hover svg{transform:translateX(4px)}
.btn-text svg{transition:transform .2s ease}

/* ============ Empty state ============ */
.empty-state{
  text-align:center;padding:64px 24px;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-card);box-shadow:var(--shadow);max-width:760px;
}
.empty-state .empty-icon{
  width:64px;height:64px;margin:0 auto 18px;border-radius:16px;background:var(--primary-light);
  display:flex;align-items:center;justify-content:center;color:var(--primary);
}
.empty-state h2{font-size:20px;margin-bottom:10px}
.empty-state p{color:var(--text-2);font-size:15px;margin-bottom:22px}

/* ============ CTA ============ */
.cta-band{
  position:relative;margin:64px 0 0;padding:60px 32px;text-align:center;overflow:hidden;border-radius:16px;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
}
.cta-band::before{content:"";position:absolute;inset:0;background:rgba(31,90,214,.42)}
.cta-band-inner{position:relative;max-width:640px;margin:0 auto;color:#fff}
.cta-band h2{color:#fff;font-size:26px;margin-bottom:12px}
.cta-band p{color:rgba(255,255,255,.92);font-size:15px;margin-bottom:24px}
.cta-band .btn-primary{background:#fff;color:var(--primary-dark)}
.cta-band .btn-primary:hover{background:#EAF1FC;color:var(--primary-dark)}
.cta-note{font-size:13px;color:rgba(255,255,255,.86);margin:14px 0 0}

/* ============ Footer ============ */
.site-footer{background:#EAF1FC;border-top:1px solid var(--line);margin-top:72px;padding:56px 0 24px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px}
.footer-brand .logo{margin-bottom:14px}
.footer-brand p{font-size:14px;line-height:1.85;color:var(--text-2);max-width:34em}
.footer-col h4{font-size:15px;font-weight:600;margin-bottom:16px}
.footer-col ul li{margin-bottom:10px}
.footer-col ul li a,.footer-col ul li span{font-size:14px;color:var(--text-2);line-height:1.7}
.footer-col ul li a:hover{color:var(--primary)}
.footer-bottom{
  margin-top:40px;padding-top:18px;border-top:1px solid rgba(31,90,214,.14);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
}
.footer-bottom p{font-size:13px;color:var(--text-3);margin:0}
.to-top{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--text-2)}
.to-top:hover{color:var(--primary)}

/* ============ Mobile tabbar ============ */
.mobile-tabbar{display:none}

@media (max-width:1024px){
  .container{padding:0 24px}
  .article-layout{grid-template-columns:1fr;gap:36px}
  .article-body{max-width:100%}
  .post-foot{max-width:100%}
  .sidebar{margin-top:8px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .main-nav .nav-link{padding:10px 10px;font-size:14px}
}
@media (max-width:768px){
  :root{--header-h:64px}
  body{font-size:15px;line-height:1.87}
  .container{padding:0 16px}
  .main-nav{
    display:none;position:absolute;top:var(--header-h);left:0;right:0;background:#fff;
    border-bottom:1px solid var(--line);box-shadow:0 16px 34px rgba(19,50,110,.10);
    flex-direction:column;align-items:stretch;gap:0;padding:10px 16px 16px;
  }
  .main-nav.is-open{display:flex}
  .main-nav .nav-link{padding:14px 12px;font-size:15px;border-radius:10px}
  .main-nav .nav-link::after{display:none}
  .main-nav .nav-link.is-active{background:var(--primary-light)}
  .nav-toggle{display:inline-flex}
  .article-head h1{font-size:24px;line-height:1.45}
  .article-body h2{font-size:20px}
  .article-body h3{font-size:17px}
  .crumb-wrap{padding:16px 0 0}
  .article-section{padding:36px 0 8px}
  .related-item img{width:88px;height:58px}
  main{padding-bottom:76px}
  .cta-band{padding:44px 20px;margin-top:48px;border-radius:14px}
  .cta-band h2{font-size:22px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .site-footer{padding:44px 0 20px;margin-top:56px}
  .mobile-tabbar{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:70;background:#fff;
    border-top:1px solid var(--line);box-shadow:0 -6px 20px rgba(19,50,110,.08);
    padding-bottom:env(safe-area-inset-bottom);
  }
  .tab-item{
    position:relative;flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;
    gap:2px;height:60px;font-size:12px;color:var(--text-3);transition:color .2s ease;
  }
  .tab-item::before{
    content:"";position:absolute;top:0;left:50%;transform:translateX(-50%) scaleX(0);
    width:28px;height:3px;border-radius:0 0 3px 3px;background:var(--primary);transition:transform .2s ease;
  }
  .tab-item svg{width:22px;height:22px}
  .tab-item.is-active{color:var(--primary)}
  .tab-item.is-active::before{transform:translateX(-50%) scaleX(1)}
}
@media (max-width:480px){
  .article-head h1{font-size:22px}
  .article-meta{font-size:12px;gap:8px 14px}
  .related-item{padding:12px}
  .post-actions{gap:12px}
  .btn{height:44px;padding:0 20px;font-size:14px;width:100%}
  .post-actions .btn{width:auto}
}

/* roulang page: category1 */
:root{
  --primary:#1F5AD6;
  --primary-dark:#16409C;
  --primary-light:#E8F0FE;
  --primary-soft:#EAF1FC;
  --accent:#0FA37F;
  --amber:#F0A020;
  --bg:#F6F8FC;
  --card:#FFFFFF;
  --text:#1F2937;
  --text-2:#5B6B82;
  --text-3:#8A97AB;
  --line:#E4EAF3;
  --error:#D64545;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --r-pill:999px;
  --sh:0 1px 2px rgba(19,50,110,.04),0 8px 24px rgba(19,50,110,.06);
  --sh-hover:0 4px 8px rgba(19,50,110,.06),0 16px 36px rgba(19,50,110,.10);
  --sec:88px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:30px;
  font-weight:400;
  text-align:left;
  overflow-x:hidden;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--primary);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--primary-dark);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;color:var(--text);}
h1{font-size:34px;line-height:42px;}
h2{font-size:26px;line-height:34px;}
h3{font-size:20px;line-height:28px;font-weight:600;}
h4{font-size:17px;line-height:26px;font-weight:600;}
p{margin:0 0 1em;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:3px solid rgba(31,90,214,.35);outline-offset:2px;border-radius:4px;}
.container{max-width:1200px;margin:0 auto;padding:0 32px;}
.section{padding:var(--sec) 0;}
.section--tight{padding:56px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:24px;}
.section-head p{margin:8px 0 0;color:var(--text-2);font-size:15px;line-height:28px;max-width:46em;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;line-height:18px;letter-spacing:.04em;
  color:var(--primary);background:var(--primary-light);
  border-radius:var(--r-pill);padding:5px 14px;font-weight:600;margin-bottom:14px;
}
.lede{color:var(--text-2);max-width:46em;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:var(--r-btn);
  font-size:16px;font-weight:600;line-height:1;cursor:pointer;
  border:1px solid transparent;transition:all .18s ease;white-space:nowrap;
}
.btn svg{width:16px;height:16px;flex:none;}
.btn-primary{background:var(--primary);color:#fff;}
.btn-primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh);}
.btn-primary:active{transform:none;box-shadow:none;}
.btn-secondary{background:#fff;color:var(--primary);border-color:var(--primary);}
.btn-secondary:hover{background:var(--primary-light);color:var(--primary-dark);}
.btn-ghost{background:transparent;color:var(--primary);padding:0;height:auto;font-weight:600;}
.btn-ghost:hover{color:var(--primary-dark);text-decoration:underline;text-underline-offset:4px;}
.btn-sm{height:40px;padding:0 20px;font-size:14px;}
.btn:disabled,.btn.is-disabled{background:var(--line);color:var(--text-3);border-color:transparent;cursor:not-allowed;transform:none;box-shadow:none;}
.btn .spin{
  width:16px;height:16px;border-radius:50%;
  border:2px solid rgba(255,255,255,.45);border-top-color:#fff;display:none;
}
.btn.is-loading .spin{display:inline-block;animation:spin .8s linear infinite;}
@keyframes spin{to{transform:rotate(360deg);}}

/* ============ 标签 / 徽章 ============ */
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;
  border-radius:var(--r-pill);font-size:12px;line-height:18px;letter-spacing:.04em;font-weight:600;
}
.badge-tag{background:var(--primary-light);color:var(--primary);}
.badge-doing{background:rgba(15,163,127,.10);color:var(--accent);}
.badge-limit{background:rgba(240,160,32,.10);color:#B8760A;}
.badge-done{background:var(--line);color:var(--text-3);}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid var(--line);transition:box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 20px rgba(19,50,110,.08);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;}
.logo{display:inline-flex;align-items:center;gap:8px;color:var(--text);}
.logo:hover{color:var(--text);}
.logo-mark{
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--primary);color:#fff;font-weight:700;font-size:16px;
  height:32px;padding:0 10px;border-radius:9px;letter-spacing:.02em;
}
.logo-text{font-size:18px;font-weight:700;letter-spacing:.02em;}
.main-nav{display:flex;align-items:center;gap:28px;}
.nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--text-2);padding:6px 0;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;border-radius:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:left;transition:transform .2s ease;
}
.nav-link:hover{color:var(--primary);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--primary);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;width:44px;height:44px;align-items:center;justify-content:center;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-btn);color:var(--text);cursor:pointer;
}
.nav-toggle:hover{border-color:var(--primary);color:var(--primary);}
.nav-toggle svg{width:20px;height:20px;}
.mobile-drawer{
  border-top:1px solid var(--line);background:#fff;padding:12px 0 16px;
}
.mobile-drawer ul{display:flex;flex-direction:column;}
.mobile-drawer a{
  display:block;padding:12px 32px;font-size:15px;color:var(--text-2);font-weight:500;
}
.mobile-drawer a:hover,.mobile-drawer a.is-active{background:var(--primary-light);color:var(--primary);}

/* ============ 页面横幅 ============ */
.page-banner{
  position:relative;min-height:240px;display:flex;align-items:center;
  background-image:linear-gradient(rgba(31,90,214,.52),rgba(31,90,214,.52)),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;color:#fff;
}
.page-banner h1{color:#fff;font-size:34px;line-height:42px;text-shadow:0 2px 10px rgba(9,26,58,.35);}
.page-banner .banner-inner{padding:44px 0;}
.page-banner p{
  margin:12px 0 0;max-width:44em;color:rgba(255,255,255,.94);font-size:16px;line-height:28px;
}
.banner-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px;}
.page-banner .btn-secondary{background:#fff;color:var(--primary);border-color:#fff;}
.page-banner .btn-secondary:hover{background:rgba(255,255,255,.88);color:var(--primary-dark);}
.banner-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px;}
.banner-tags span{
  border:1px solid rgba(255,255,255,.6);border-radius:var(--r-pill);
  padding:4px 12px;font-size:12px;line-height:18px;letter-spacing:.04em;color:#fff;
}

/* ============ 面包屑 ============ */
.breadcrumb{padding:20px 0 0;font-size:13px;line-height:22px;color:var(--text-3);}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.breadcrumb li{display:flex;align-items:center;gap:8px;}
.breadcrumb li+li::before{content:"›";color:var(--text-3);}
.breadcrumb a{color:var(--text-2);}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .current{color:var(--text-3);}

/* ============ 通用卡片 / 网格 ============ */
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh);padding:24px;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);border-color:rgba(31,90,214,.2);}
.grid{display:grid;gap:24px;}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr));}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr));}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr));}
.split{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);gap:40px;align-items:start;}

/* ============ 图文 ============ */
.figure{margin:0;}
.figure img{
  width:100%;height:auto;aspect-ratio:16/10;object-fit:cover;
  border-radius:var(--r-img);border:1px solid var(--line);background:#EDF1F7;
}
.figure figcaption{
  margin-top:12px;font-size:13px;line-height:22px;color:var(--text-3);text-align:center;
}
.img-fallback{background:#EDF1F7;}

/* ============ 要点清单 ============ */
.checklist{display:grid;gap:16px;margin-top:8px;}
.checklist li{
  display:flex;gap:14px;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-card);padding:20px 22px;box-shadow:var(--sh);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.checklist li:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);border-color:rgba(31,90,214,.2);}
.checklist .ico{
  flex:none;width:36px;height:36px;border-radius:10px;background:var(--primary-light);
  color:var(--primary);display:flex;align-items:center;justify-content:center;
}
.checklist .ico svg{width:18px;height:18px;}
.checklist h4{margin-bottom:4px;}
.checklist p{margin:0;color:var(--text-2);font-size:15px;line-height:26px;}

/* ============ 编号步骤 ============ */
.steps{position:relative;margin-top:8px;padding-left:36px;}
.steps::before{content:"";position:absolute;left:15px;top:10px;bottom:10px;width:2px;background:var(--line);}
.step{position:relative;padding-bottom:28px;}
.step:last-child{padding-bottom:0;}
.step .num{
  position:absolute;left:-36px;top:2px;width:32px;height:32px;border-radius:50%;
  background:#fff;border:2px solid var(--primary);color:var(--primary);
  font-size:13px;font-weight:700;display:flex;align-items:center;justify-content:center;
}
.step h4{margin-bottom:6px;}
.step p{margin:0;color:var(--text-2);font-size:15px;line-height:26px;}

/* ============ 表格 ============ */
.table-wrap{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh);overflow:hidden;
}
table{width:100%;border-collapse:collapse;font-size:15px;}
caption{caption-side:top;text-align:left;padding:20px 24px 0;color:var(--text-2);font-size:14px;}
th,td{padding:14px 24px;text-align:left;line-height:26px;border-bottom:1px solid var(--line);vertical-align:top;}
th{font-weight:600;color:var(--text);background:var(--primary-light);font-size:14px;}
tbody tr:nth-child(even){background:#FBFCFE;}
tbody tr:last-child td{border-bottom:0;}
td strong{color:var(--primary-dark);}

/* ============ FAQ ============ */
.faq{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh);overflow:hidden;}
.faq-item+.faq-item{border-top:1px solid var(--line);}
.faq-trigger{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  background:transparent;border:0;padding:20px 24px;cursor:pointer;text-align:left;
  font-size:17px;line-height:26px;font-weight:600;color:var(--text);
}
.faq-trigger:hover{color:var(--primary-dark);}
.faq-trigger .faq-icon{position:relative;flex:none;width:18px;height:18px;}
.faq-trigger .faq-icon::before,
.faq-trigger .faq-icon::after{
  content:"";position:absolute;background:var(--primary);border-radius:2px;transition:transform .22s ease,opacity .22s ease;
}
.faq-trigger .faq-icon::before{left:0;right:0;top:8px;height:2px;}
.faq-trigger .faq-icon::after{top:0;bottom:0;left:8px;width:2px;}
.faq-trigger[aria-expanded="true"] .faq-icon::after{transform:scaleY(0);opacity:0;}
.faq-panel{padding:0 24px 22px;color:var(--text-2);font-size:15px;line-height:26px;}
.faq-panel p:last-child{margin-bottom:0;}

/* ============ 提示块 ============ */
.note{
  background:var(--primary-light);border-left:3px solid var(--primary);
  border-radius:0 var(--r-img) var(--r-img) 0;padding:18px 22px;color:var(--text-2);
  font-size:15px;line-height:26px;
}
.note strong{color:var(--primary-dark);}

/* ============ CTA 通栏 ============ */
.cta-band{
  position:relative;color:#fff;text-align:center;
  background-image:linear-gradient(rgba(31,90,214,.45),rgba(31,90,214,.45)),url('/assets/images/backpic/back-3.webp');
  background-size:cover;background-position:center;
}
.cta-band .cta-inner{padding:76px 0;}
.cta-band h2{color:#fff;font-size:26px;line-height:34px;}
.cta-band p{margin:14px auto 26px;max-width:38em;color:rgba(255,255,255,.94);font-size:15px;line-height:26px;}
.cta-band .btn-primary{background:#fff;color:var(--primary);}
.cta-band .btn-primary:hover{background:#fff;color:var(--primary-dark);}
.cta-note{margin:16px 0 0;font-size:13px;line-height:22px;color:rgba(255,255,255,.85);}

/* ============ 页脚 ============ */
.site-footer{background:var(--primary-soft);border-top:1px solid var(--line);padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand p{color:var(--text-2);font-size:14px;line-height:24px;max-width:34em;}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--text);}
.footer-col ul{display:grid;gap:10px;}
.footer-col a,.footer-col span{color:var(--text-2);font-size:14px;line-height:24px;}
.footer-col a:hover{color:var(--primary);}
.footer-bottom{
  margin-top:48px;border-top:1px solid var(--line);padding:20px 0 28px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.footer-bottom p{margin:0;font-size:13px;line-height:22px;color:var(--text-3);}
.to-top{
  display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--text-2);
}
.to-top:hover{color:var(--primary);}

/* ============ 移动端底部 Tab ============ */
.mobile-tab{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:#fff;border-top:1px solid var(--line);
  box-shadow:0 -6px 18px rgba(19,50,110,.06);
  padding-bottom:env(safe-area-inset-bottom);
}
.mobile-tab .tab-inner{display:flex;height:60px;}
.tab-item{
  position:relative;flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:3px;color:var(--text-3);font-size:12px;line-height:18px;
}
.tab-item svg{width:22px;height:22px;}
.tab-item.is-active{color:var(--primary);}
.tab-item.is-active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:28px;height:3px;border-radius:0 0 3px 3px;background:var(--primary);
}
.tab-item:hover{color:var(--primary);}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .container{padding:0 24px;}
  :root{--sec:64px;}
  .main-nav{gap:18px;}
  .nav-link{font-size:14px;}
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr));}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr));}
  .split{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .header-actions .btn{display:none;}
}
@media (max-width:768px){
  :root{--sec:48px;}
  .container{padding:0 16px;}
  body{font-size:15px;line-height:28px;}
  h1{font-size:26px;line-height:34px;}
  h2{font-size:22px;line-height:30px;}
  .page-banner h1{font-size:26px;line-height:34px;}
  .main-nav{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-inner{height:60px;}
  .logo-text{font-size:16px;}
  .logo-mark{height:28px;font-size:14px;padding:0 8px;}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .section-head{flex-direction:column;align-items:flex-start;}
  .mobile-tab{display:block;}
  main{padding-bottom:76px;}
  .page-banner{min-height:200px;}
  .page-banner .banner-inner{padding:32px 0;}
  .page-banner p{font-size:15px;line-height:26px;}
  .cta-band .cta-inner{padding:56px 0;}
  th,td{padding:12px 16px;font-size:14px;}
  .faq-trigger{padding:16px;font-size:16px;}
  .faq-panel{padding:0 16px 18px;}
  .card{padding:20px;}
  .btn{height:44px;padding:0 22px;font-size:15px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:480px){
  .banner-actions .btn{width:100%;}
  .checklist li{padding:16px;}
}

/* roulang page: category2 */
:root{
  --primary:#1F5AD6;
  --primary-dark:#16409C;
  --primary-light:#E8F0FE;
  --primary-soft:#EAF1FC;
  --accent:#0FA37F;
  --amber:#F0A020;
  --page-bg:#F6F8FC;
  --card-bg:#FFFFFF;
  --text:#1F2937;
  --text-sub:#5B6B82;
  --text-weak:#8A97AB;
  --line:#E4EAF3;
  --error:#D64545;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --radius-pill:999px;
  --shadow:0 1px 2px rgba(19,50,110,.04), 0 8px 24px rgba(19,50,110,.06);
  --shadow-hover:0 4px 8px rgba(19,50,110,.06), 0 16px 36px rgba(19,50,110,.10);
  --container:1200px;
  --section-y:88px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:30px;
  color:var(--text);
  background:var(--page-bg);
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
button{font-family:inherit;cursor:pointer;border:none;background:none;}
:focus-visible{outline:3px solid rgba(31,90,214,.24);outline-offset:2px;border-radius:6px;}
.container{
  max-width:var(--container);
  margin:0 auto;
  padding:0 32px;
}
.nums{font-variant-numeric:tabular-nums;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  height:72px;
  background:#fff;
  border-bottom:1px solid var(--line);
  z-index:80;
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 20px rgba(19,50,110,.08);}
.header-inner{
  height:72px;
  display:flex;
  align-items:center;
  gap:24px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-weight:700;
  font-size:19px;
  letter-spacing:.01em;
  color:var(--primary-dark);
  flex-shrink:0;
}
.logo-mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  height:34px;
  padding:0 12px;
  border-radius:var(--radius-btn);
  background:var(--primary);
  color:#fff;
  font-size:17px;
  font-weight:700;
  letter-spacing:.04em;
}
.logo-text{color:var(--primary-dark);}
.main-nav{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:8px;
  flex:1 1 auto;
}
.nav-link{
  position:relative;
  display:inline-block;
  padding:10px 12px;
  font-size:15px;
  color:var(--text-sub);
  transition:color .2s ease;
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:2px;
  height:2px;
  background:var(--primary);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .22s ease;
  border-radius:2px;
}
.nav-link:hover{color:var(--primary);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--primary);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}
.header-cta{flex-shrink:0;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 28px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  transition:background-color .2s ease, color .2s ease, transform .18s ease, box-shadow .2s ease, border-color .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--primary);color:#fff;}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-1px);}
.btn-primary:active{transform:none;background:var(--primary-dark);}
.btn-ghost{
  background:#fff;
  color:var(--primary);
  border:1px solid var(--primary);
}
.btn-ghost:hover{background:var(--primary-light);transform:translateY(-1px);}
.btn-ghost:active{transform:none;}
.btn-sm{height:44px;padding:0 22px;font-size:14px;}
.btn-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--primary);
  font-weight:600;
  font-size:15px;
}
.btn-link svg{transition:transform .2s ease;}
.btn-link:hover{text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:2px;}
.btn-link:hover svg{transform:translateX(3px);}
.btn[disabled]{background:var(--line);color:var(--text-weak);cursor:not-allowed;transform:none;}

/* ---------- 移动端顶部按钮 ---------- */
.mobile-toggle{
  display:none;
  width:42px;height:42px;
  border-radius:var(--radius-btn);
  border:1px solid var(--line);
  color:var(--primary);
  align-items:center;
  justify-content:center;
  margin-left:auto;
  background:#fff;
}
.mobile-panel{
  display:none;
  position:fixed;
  top:72px;left:0;right:0;
  background:#fff;
  border-bottom:1px solid var(--line);
  box-shadow:0 14px 30px rgba(19,50,110,.10);
  padding:12px 16px 18px;
  z-index:79;
}
.mobile-panel.is-open{display:block;}
.mobile-panel a{
  display:block;
  padding:13px 4px;
  font-size:16px;
  color:var(--text-sub);
  border-bottom:1px solid var(--line);
}
.mobile-panel a:last-child{border-bottom:none;}
.mobile-panel a.is-active{color:var(--primary);font-weight:600;}

/* ---------- 横幅 ---------- */
.page-banner{
  position:relative;
  margin-top:72px;
  min-height:240px;
  display:flex;
  align-items:center;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center;
  background-color:#16409C;
  overflow:hidden;
}
.page-banner::before{
  content:"";
  position:absolute;
  inset:0;
  background:rgba(31,90,214,.58);
}
.banner-inner{
  position:relative;
  z-index:1;
  color:#fff;
  padding:48px 0;
  max-width:760px;
}
.banner-label{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:26px;
  padding:0 14px;
  border-radius:var(--radius-pill);
  background:rgba(255,255,255,.18);
  border:1px solid rgba(255,255,255,.35);
  font-size:12px;
  letter-spacing:.04em;
  margin-bottom:16px;
}
.banner-inner p{
  font-size:16px;
  line-height:28px;
  color:rgba(255,255,255,.92);
  max-width:640px;
}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  padding:22px 0 0;
  font-size:13px;
  color:var(--text-sub);
}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.breadcrumb li{display:inline-flex;align-items:center;gap:8px;}
.breadcrumb li+li::before{content:"›";color:var(--text-weak);}
.breadcrumb a{color:var(--text-sub);transition:color .2s ease;}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .current{color:var(--text);font-weight:600;}

/* ---------- 页面标题区 ---------- */
.page-head{padding:20px 0 0;}
.page-head h1{
  font-size:34px;
  line-height:42px;
  font-weight:700;
  letter-spacing:.01em;
  color:var(--text);
}
.page-head .lead{
  margin-top:18px;
  max-width:46em;
  color:var(--text-sub);
  font-size:16px;
  line-height:30px;
}
.head-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px;}
.tag{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 12px;
  border-radius:var(--radius-pill);
  background:var(--primary-light);
  color:var(--primary);
  font-size:12px;
  letter-spacing:.04em;
  font-weight:600;
}

/* ---------- 板块 ---------- */
.section{padding:var(--section-y) 0 0;}
.section:last-of-type{padding-bottom:var(--section-y);}
.section-head{max-width:46em;}
.section-head h2{
  font-size:26px;
  line-height:34px;
  font-weight:700;
  color:var(--text);
}
.section-head p{margin-top:12px;color:var(--text-sub);}
.section-head .bar{
  width:44px;height:4px;
  border-radius:2px;
  background:var(--primary);
  margin-bottom:16px;
}
.section-body{margin-top:24px;}

/* ---------- 左右分栏 ---------- */
.split{
  display:grid;
  grid-template-columns:minmax(0,1fr) 360px;
  gap:32px;
  align-items:start;
}
.article-card{
  background:var(--card-bg);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow);
  padding:36px;
}
.article-card h2{
  font-size:24px;
  line-height:34px;
  font-weight:700;
  margin-bottom:8px;
}
.article-card h3{
  font-size:20px;
  line-height:28px;
  font-weight:600;
  margin:32px 0 10px;
  padding-left:14px;
  position:relative;
}
.article-card h3::before{
  content:"";
  position:absolute;
  left:0;top:6px;
  width:4px;height:18px;
  border-radius:2px;
  background:var(--primary);
}
.article-card p{color:var(--text-sub);margin-top:12px;}
.article-card p strong{color:var(--text);font-weight:600;}
.quote{
  margin-top:20px;
  padding:16px 20px;
  background:var(--primary-light);
  border-left:3px solid var(--primary);
  border-radius:0 var(--radius-img) var(--radius-img) 0;
  color:var(--primary-dark);
  font-size:15px;
  line-height:28px;
}
.mini-list{margin-top:14px;}
.mini-list li{
  position:relative;
  padding-left:20px;
  color:var(--text-sub);
  font-size:15px;
  line-height:30px;
}
.mini-list li::before{
  content:"";
  position:absolute;
  left:2px;top:12px;
  width:6px;height:6px;
  border-radius:50%;
  background:var(--primary);
}

/* ---------- 信息卡 ---------- */
.info-card{
  position:sticky;
  top:96px;
  background:var(--card-bg);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow);
  padding:26px;
}
.info-card h3{
  font-size:17px;
  line-height:26px;
  font-weight:600;
  margin-bottom:6px;
}
.info-card .sub{font-size:13px;color:var(--text-weak);line-height:22px;}
.check-list{margin-top:18px;}
.check-list li{
  display:flex;
  gap:12px;
  align-items:flex-start;
  padding:12px 0;
  border-bottom:1px solid var(--line);
  font-size:14px;
  line-height:24px;
  color:var(--text-sub);
}
.check-list li:last-child{border-bottom:none;}
.check-list .ico{
  flex:0 0 20px;
  width:20px;height:20px;
  margin-top:2px;
  border-radius:50%;
  background:rgba(15,163,127,.10);
  color:var(--accent);
  display:inline-flex;align-items:center;justify-content:center;
}
.info-card .card-actions{
  margin-top:20px;
  display:flex;
  flex-direction:column;
  gap:12px;
}
.info-card .btn{width:100%;}
.info-meta{
  margin-top:22px;
  padding-top:18px;
  border-top:1px solid var(--line);
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:14px;
}
.info-meta .item span{
  display:block;
  font-size:12px;
  color:var(--text-weak);
  letter-spacing:.04em;
}
.info-meta .item strong{
  display:block;
  font-size:20px;
  font-weight:700;
  color:var(--primary-dark);
  line-height:30px;
}

/* ---------- 要点清单 ---------- */
.point-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:20px;
}
.point-card{
  display:flex;
  gap:16px;
  align-items:flex-start;
  background:var(--card-bg);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow);
  padding:24px;
  transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.point-card:hover{
  transform:translateY(-2px);
  box-shadow:var(--shadow-hover);
  border-color:rgba(31,90,214,.2);
}
.point-card .ico{
  flex:0 0 40px;
  width:40px;height:40px;
  border-radius:12px;
  background:var(--primary-light);
  color:var(--primary);
  display:inline-flex;align-items:center;justify-content:center;
}
.point-card h3{
  font-size:17px;
  line-height:26px;
  font-weight:600;
  margin-bottom:4px;
}
.point-card p{
  font-size:14px;
  line-height:24px;
  color:var(--text-sub);
}

/* ---------- 图文区块 ---------- */
.figure-block{
  display:grid;
  grid-template-columns:minmax(0,460px) minmax(0,1fr);
  gap:36px;
  align-items:center;
  background:var(--card-bg);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow);
  padding:28px;
}
.figure-media{
  position:relative;
  border-radius:var(--radius-img);
  overflow:hidden;
  border:1px solid var(--line);
  aspect-ratio:16/10;
  background:#EDF1F7;
}
.figure-media img{width:100%;height:100%;object-fit:cover;}
.figure-body h2{
  font-size:22px;
  line-height:32px;
  font-weight:700;
}
.figure-body p{
  margin-top:12px;
  color:var(--text-sub);
  font-size:15px;
  line-height:28px;
}
.layer-steps{margin-top:18px;}
.layer-steps li{
  display:flex;
  gap:14px;
  align-items:flex-start;
  padding:12px 0;
  border-top:1px solid var(--line);
}
.layer-steps li:first-child{border-top:none;}
.layer-steps .num{
  flex:0 0 26px;
  width:26px;height:26px;
  border-radius:50%;
  background:var(--primary-light);
  color:var(--primary-dark);
  font-size:13px;
  font-weight:700;
  display:inline-flex;align-items:center;justify-content:center;
  font-variant-numeric:tabular-nums;
}
.layer-steps h4{font-size:15px;font-weight:600;line-height:26px;}
.layer-steps p{font-size:14px;line-height:24px;color:var(--text-sub);margin-top:2px;}

/* ---------- 折叠问答 ---------- */
.faq-wrap{
  background:var(--card-bg);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow);
  padding:8px 28px;
}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:last-child{border-bottom:none;}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  text-align:left;
  padding:22px 0;
  font-size:17px;
  line-height:26px;
  font-weight:600;
  color:var(--text);
  transition:color .2s ease;
}
.faq-q:hover{color:var(--primary);}
.faq-q .sign{
  flex:0 0 26px;
  width:26px;height:26px;
  border-radius:50%;
  border:1px solid var(--line);
  color:var(--primary);
  display:inline-flex;align-items:center;justify-content:center;
  transition:transform .25s ease, background-color .25s ease, border-color .25s ease;
}
.faq-item.is-open .faq-q{color:var(--primary-dark);}
.faq-item.is-open .faq-q .sign{
  transform:rotate(45deg);
  background:var(--primary-light);
  border-color:rgba(31,90,214,.25);
}
.faq-a{
  display:none;
  padding:0 0 22px;
  font-size:15px;
  line-height:26px;
  color:var(--text-sub);
  max-width:46em;
}
.faq-item.is-open .faq-a{display:block;}

/* ---------- 底部 CTA ---------- */
.cta-band{
  position:relative;
  margin-top:var(--section-y);
  border-radius:var(--radius-card);
  overflow:hidden;
  background-image:url("/assets/images/backpic/back-3.webp");
  background-size:cover;
  background-position:center;
  background-color:#1F5AD6;
}
.cta-band::before{
  content:"";
  position:absolute;
  inset:0;
  background:rgba(31,90,214,.46);
}
.cta-inner{
  position:relative;
  z-index:1;
  color:#fff;
  text-align:center;
  padding:64px 32px;
  max-width:720px;
  margin:0 auto;
}
.cta-inner h2{
  font-size:26px;
  line-height:34px;
  font-weight:700;
}
.cta-inner p{
  margin-top:14px;
  font-size:15px;
  line-height:28px;
  color:rgba(255,255,255,.92);
}
.cta-actions{
  margin-top:26px;
  display:flex;
  justify-content:center;
  gap:14px;
  flex-wrap:wrap;
}
.cta-band .btn-ghost{
  background:rgba(255,255,255,.96);
  border-color:transparent;
  color:var(--primary-dark);
}
.cta-band .btn-ghost:hover{background:#fff;}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:0;
  background:var(--primary-soft);
  border-top:1px solid var(--line);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:32px;
  padding:64px 0 40px;
}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand p{
  font-size:14px;
  line-height:24px;
  color:var(--text-sub);
  max-width:34em;
}
.badge{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 12px;
  border-radius:var(--radius-pill);
  font-size:12px;
  letter-spacing:.04em;
  font-weight:600;
  margin-top:14px;
}
.badge-tag{background:rgba(31,90,214,.10);color:var(--primary);}
.footer-col h4{
  font-size:15px;
  font-weight:600;
  margin-bottom:14px;
  color:var(--text);
}
.footer-col ul li{margin-bottom:10px;}
.footer-col a,.footer-col span{
  font-size:14px;
  line-height:24px;
  color:var(--text-sub);
  transition:color .2s ease;
}
.footer-col a:hover{color:var(--primary);}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:20px 0 26px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
}
.footer-bottom p{font-size:13px;color:var(--text-weak);line-height:22px;}
.to-top{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:13px;
  color:var(--text-sub);
  transition:color .2s ease;
}
.to-top:hover{color:var(--primary);}

/* ---------- 移动端底部 Tab ---------- */
.mobile-tab{
  display:none;
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:90;
  background:#fff;
  border-top:1px solid var(--line);
  box-shadow:0 -6px 20px rgba(19,50,110,.08);
  padding-bottom:env(safe-area-inset-bottom);
}
.mobile-tab ul{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  height:60px;
}
.mobile-tab a{
  position:relative;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:4px;
  font-size:12px;
  color:var(--text-weak);
  letter-spacing:.02em;
}
.mobile-tab a::before{
  content:"";
  position:absolute;
  top:0;left:50%;
  transform:translateX(-50%);
  width:32px;height:3px;
  border-radius:0 0 3px 3px;
  background:transparent;
  transition:background-color .2s ease;
}
.mobile-tab a.is-active{color:var(--primary);font-weight:600;}
.mobile-tab a.is-active::before{background:var(--primary);}
.mobile-tab svg{width:22px;height:22px;}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .container{padding:0 24px;}
  :root{--section-y:64px;}
  .main-nav{display:none;}
  .header-cta{display:none;}
  .mobile-toggle{display:inline-flex;}
  .split{grid-template-columns:minmax(0,1fr);gap:24px;}
  .info-card{position:static;}
  .figure-block{grid-template-columns:minmax(0,1fr);gap:24px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;padding:48px 0 32px;}
  .page-head h1{font-size:30px;line-height:38px;}
}
@media (max-width:768px){
  .container{padding:0 16px;}
  :root{--section-y:48px;}
  body{font-size:15px;line-height:28px;}
  main{padding-bottom:76px;}
  .page-banner{margin-top:64px;min-height:200px;}
  .site-header{height:64px;}
  .header-inner{height:64px;}
  .logo{font-size:17px;}
  .logo-mark{height:30px;padding:0 10px;font-size:15px;}
  .mobile-panel{top:64px;}
  .banner-inner{padding:36px 0;}
  .page-head h1{font-size:26px;line-height:34px;}
  .page-head .lead{font-size:15px;line-height:28px;}
  .article-card{padding:22px;}
  .article-card h2{font-size:21px;line-height:30px;}
  .article-card h3{font-size:17px;line-height:26px;margin-top:26px;}
  .section-head h2{font-size:22px;line-height:30px;}
  .point-grid{grid-template-columns:minmax(0,1fr);gap:16px;}
  .point-card{padding:20px;}
  .figure-block{padding:20px;}
  .figure-body h2{font-size:20px;line-height:30px;}
  .faq-wrap{padding:4px 18px;}
  .faq-q{font-size:16px;line-height:25px;padding:18px 0;}
  .cta-inner{padding:44px 20px;}
  .cta-inner h2{font-size:22px;line-height:30px;}
  .cta-actions{flex-direction:column;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:24px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .mobile-tab{display:block;}
  .btn{height:44px;padding:0 22px;}
  .info-meta{grid-template-columns:1fr 1fr;}
}
@media (max-width:480px){
  .page-head h1{font-size:24px;line-height:32px;}
  .article-card{padding:18px;}
  .info-card{padding:20px;}
  .info-meta{grid-template-columns:1fr;}
  .figure-block{padding:16px;}
}

/* roulang page: category3 */
:root{
  --primary:#1F5AD6;
  --primary-dark:#16409C;
  --primary-soft:#E8F0FE;
  --accent:#0FA37F;
  --amber:#F0A020;
  --page:#F6F8FC;
  --card:#FFFFFF;
  --text:#1F2937;
  --text-2:#5B6B82;
  --text-3:#8A97AB;
  --line:#E4EAF3;
  --error:#D64545;
  --shadow:0 1px 2px rgba(19,50,110,.04),0 8px 24px rgba(19,50,110,.06);
  --shadow-hover:0 4px 8px rgba(19,50,110,.06),0 16px 36px rgba(19,50,110,.10);
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --r-pill:999px;
  --header-h:72px;
  --sec:88px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--page);
  color:var(--text);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:30px;
  font-weight:400;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--primary);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--primary-dark);}
h1,h2,h3,h4{margin:0;line-height:1.35;font-weight:700;color:var(--text);}
h1{font-size:34px;line-height:42px;}
h2{font-size:26px;line-height:34px;}
h3{font-size:20px;line-height:28px;font-weight:600;}
h4{font-size:17px;line-height:26px;font-weight:600;}
p{margin:0 0 1em;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:3px solid rgba(31,90,214,.28);outline-offset:2px;border-radius:6px;}
.container{max-width:1200px;margin:0 auto;padding:0 32px;}
.num{font-variant-numeric:tabular-nums;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:background-color .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--primary);color:#fff;}
.btn-primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);}
.btn-secondary{background:#fff;color:var(--primary);border-color:var(--primary);}
.btn-secondary:hover{background:var(--primary-soft);color:var(--primary-dark);}
.btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-weight:600;font-size:15px;}
.btn-text:hover{color:var(--primary-dark);}
.btn-text:hover span{text-decoration:underline;text-underline-offset:3px;}
.btn-text svg{transition:transform .2s ease;}
.btn-text:hover svg{transform:translateX(2px);}
.btn[disabled]{background:var(--line);color:var(--text-3);cursor:not-allowed;border-color:transparent;}
.btn .spinner{width:16px;height:16px;border-radius:50%;border:2px solid rgba(255,255,255,.45);border-top-color:#fff;display:none;}

/* ---------- badges / tags ---------- */
.badge{display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:var(--r-pill);font-size:12px;line-height:18px;letter-spacing:.04em;font-weight:500;}
.badge-tag{background:var(--primary-soft);color:var(--primary-dark);}
.badge-ok{background:rgba(15,163,127,.1);color:var(--accent);}
.badge-warn{background:rgba(240,160,32,.12);color:#B8760C;}
.badge-muted{background:var(--line);color:var(--text-3);}
.tag{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-pill);background:var(--primary-soft);color:var(--primary-dark);font-size:12px;letter-spacing:.04em;}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .25s ease;}
.site-header.is-scrolled{box-shadow:0 2px 12px rgba(19,50,110,.08);}
.header-inner{display:flex;align-items:center;gap:24px;height:var(--header-h);}
.logo{display:inline-flex;align-items:center;gap:8px;font-size:19px;font-weight:700;color:var(--text);letter-spacing:.01em;}
.logo-mark{display:inline-flex;align-items:center;justify-content:center;height:32px;padding:0 10px;border-radius:8px;background:var(--primary);color:#fff;font-size:15px;font-weight:700;letter-spacing:.04em;}
.logo-text{color:var(--primary-dark);}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:12px;}
.nav-link{position:relative;display:inline-flex;align-items:center;height:var(--header-h);padding:0 12px;font-size:15px;color:var(--text-2);font-weight:500;}
.nav-link::after{content:"";position:absolute;left:12px;right:12px;bottom:16px;height:2px;background:var(--primary);transform:scaleX(0);transform-origin:left;transition:transform .22s ease;}
.nav-link:hover{color:var(--primary);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--primary);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}
.header-cta{margin-left:auto;}
.nav-toggle{display:none;align-items:center;justify-content:center;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);background:#fff;color:var(--text-2);cursor:pointer;margin-left:auto;}
.nav-toggle:hover{border-color:var(--primary);color:var(--primary);}
.mobile-menu{display:none;border-top:1px solid var(--line);background:#fff;padding:8px 0 14px;}
.mobile-menu a{display:block;padding:12px 32px;color:var(--text-2);font-size:15px;}
.mobile-menu a.is-active{color:var(--primary);font-weight:600;background:var(--primary-soft);}

/* ---------- banner ---------- */
.page-banner{
  position:relative;
  min-height:240px;
  display:flex;align-items:center;
  background-image:linear-gradient(rgba(31,90,214,.48),rgba(31,90,214,.48)),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
}
.page-banner .container{padding-top:40px;padding-bottom:40px;}
.page-banner h1{color:#fff;font-size:34px;line-height:42px;margin:12px 0 10px;}
.banner-badge{display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:var(--r-pill);background:rgba(255,255,255,.18);color:#fff;font-size:12px;letter-spacing:.06em;}
.banner-sub{color:rgba(255,255,255,.94);font-size:16px;line-height:28px;max-width:46em;margin:0;}

/* ---------- breadcrumb ---------- */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:6px;font-size:13px;line-height:20px;color:var(--text-2);padding:18px 0;}
.breadcrumb a{color:var(--text-2);}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .sep{color:var(--text-3);}
.breadcrumb .current{color:var(--text-3);}

/* ---------- sections ---------- */
.section{padding:var(--sec) 0;}
.section-head{max-width:800px;margin-bottom:24px;}
.section-kicker{display:inline-block;font-size:13px;font-weight:600;color:var(--primary);letter-spacing:.06em;margin-bottom:10px;}
.section-title{margin-bottom:12px;}
.section-desc{color:var(--text-2);font-size:16px;line-height:30px;margin:0;}
.lead{font-size:16px;line-height:30px;color:var(--text-2);max-width:46em;}

/* ---------- bento cards ---------- */
.bento{display:grid;grid-template-columns:repeat(6,1fr);gap:24px;}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow);padding:24px;transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(31,90,214,.2);}
.card-lg{padding:0;overflow:hidden;}
.card-media{aspect-ratio:16/9;background:var(--primary-soft);overflow:hidden;}
.card-media img{width:100%;height:100%;object-fit:cover;border-radius:0;}
.card-lg .card-body{padding:24px;}
.card-title{margin:12px 0 10px;}
.card-text{color:var(--text-2);font-size:15px;line-height:28px;margin:0;}
.card-icon{width:44px;height:44px;border-radius:12px;background:var(--primary-soft);color:var(--primary);display:flex;align-items:center;justify-content:center;}
.col-3{grid-column:span 3;}
.col-2{grid-column:span 2;}

/* ---------- table ---------- */
.table-wrap{overflow-x:auto;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow);}
table.data-table{width:100%;border-collapse:collapse;min-width:720px;}
.data-table th,.data-table td{padding:16px 20px;text-align:left;font-size:15px;line-height:26px;border-bottom:1px solid var(--line);vertical-align:top;}
.data-table thead th{background:var(--primary-soft);color:var(--primary-dark);font-weight:600;font-size:14px;letter-spacing:.02em;}
.data-table tbody tr:nth-child(even){background:#FAFCFF;}
.data-table tbody tr:last-child td{border-bottom:none;}
.data-table td:first-child{font-weight:600;}
.table-note{margin-top:12px;font-size:14px;line-height:22px;color:var(--text-3);}

/* ---------- steps ---------- */
.steps{position:relative;display:grid;grid-template-columns:repeat(5,1fr);gap:20px;}
.steps::before{content:"";position:absolute;left:20px;right:20px;top:19px;height:2px;background:var(--line);}
.step{position:relative;padding-top:56px;z-index:1;}
.step-num{position:absolute;top:0;left:0;width:40px;height:40px;border-radius:50%;background:#fff;border:2px solid var(--primary);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;font-variant-numeric:tabular-nums;}
.step h3{font-size:17px;line-height:26px;margin-bottom:8px;}
.step p{font-size:14px;line-height:24px;color:var(--text-2);margin:0;}

/* ---------- feature split ---------- */
.feature-split{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;}
.feature-figure{margin:0;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow);padding:12px;}
.feature-figure img{border-radius:var(--r-img);aspect-ratio:16/10;object-fit:cover;width:100%;}
.feature-figure figcaption{font-size:13px;line-height:22px;color:var(--text-3);text-align:center;padding:10px 4px 2px;}
.check-list{display:grid;gap:16px;margin:20px 0 24px;}
.check-item{display:flex;gap:14px;align-items:flex-start;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:16px 18px;box-shadow:var(--shadow);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;}
.check-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(31,90,214,.2);}
.check-icon{flex:0 0 auto;width:26px;height:26px;border-radius:50%;background:rgba(15,163,127,.12);color:var(--accent);display:flex;align-items:center;justify-content:center;margin-top:3px;}
.check-item h4{margin-bottom:4px;}
.check-item p{margin:0;font-size:14px;line-height:24px;color:var(--text-2);}

/* ---------- faq ---------- */
.faq{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow);overflow:hidden;}
.faq-item+.faq-item{border-top:1px solid var(--line);}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;background:none;border:0;text-align:left;padding:20px 24px;font-size:17px;line-height:26px;font-weight:600;color:var(--text);cursor:pointer;}
.faq-q:hover{color:var(--primary);}
.faq-icon{flex:0 0 auto;width:22px;height:22px;border-radius:50%;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;color:var(--primary);transition:transform .22s ease,background-color .22s ease;}
.faq-item.is-open .faq-icon{background:var(--primary-soft);transform:rotate(180deg);}
.faq-a{display:none;padding:0 24px 22px;font-size:15px;line-height:26px;color:var(--text-2);}
.faq-a p{margin:0;}
.faq-item.is-open .faq-a{display:block;}

/* ---------- cta band ---------- */
.cta-band{
  position:relative;
  background-image:linear-gradient(rgba(31,90,214,.42),rgba(31,90,214,.42)),url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  padding:72px 0;
  text-align:center;
}
.cta-band h2{color:#fff;margin-bottom:14px;}
.cta-band p{color:rgba(255,255,255,.92);font-size:15px;line-height:26px;max-width:640px;margin:0 auto 26px;}
.cta-band .btn-primary{background:#fff;color:var(--primary);}
.cta-band .btn-primary:hover{background:#F2F6FF;color:var(--primary-dark);}

/* ---------- footer ---------- */
.site-footer{background:#EAF1FC;border-top:1px solid var(--line);padding:64px 0 24px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px;}
.footer-brand p{font-size:14px;line-height:24px;color:var(--text-2);margin:14px 0 16px;max-width:34em;}
.footer-col h4{font-size:15px;margin-bottom:16px;}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{font-size:14px;color:var(--text-2);}
.footer-col a:hover{color:var(--primary);}
.footer-col span{font-size:14px;line-height:24px;color:var(--text-2);}
.footer-bottom{margin-top:40px;padding-top:20px;border-top:1px solid rgba(31,90,214,.14);display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;}
.footer-bottom p{margin:0;font-size:13px;line-height:22px;color:var(--text-3);}
.to-top{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--text-2);}
.to-top:hover{color:var(--primary);}

/* ---------- tabbar ---------- */
.tabbar{display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;background:#fff;border-top:1px solid var(--line);box-shadow:0 -4px 16px rgba(19,50,110,.07);padding-bottom:env(safe-area-inset-bottom);}
.tabbar-inner{display:grid;grid-template-columns:repeat(4,1fr);}
.tab-item{position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;height:60px;font-size:12px;line-height:16px;color:var(--text-3);}
.tab-item::before{content:"";position:absolute;top:0;left:50%;transform:translateX(-50%) scaleX(0);width:34px;height:3px;background:var(--primary);border-radius:0 0 3px 3px;transition:transform .2s ease;}
.tab-item.is-active{color:var(--primary);}
.tab-item.is-active::before{transform:translateX(-50%) scaleX(1);}
.tab-item svg{width:22px;height:22px;}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  :root{--sec:64px;}
  .container{padding:0 24px;}
  .main-nav{gap:0;}
  .nav-link{padding:0 9px;font-size:14px;}
  .header-cta{padding:0 18px;font-size:14px;}
  .bento{grid-template-columns:repeat(4,1fr);gap:20px;}
  .col-3{grid-column:span 2;}
  .col-2{grid-column:span 2;}
  .feature-split{grid-template-columns:1fr;gap:28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:768px){
  :root{--sec:48px;--header-h:64px;}
  body{font-size:15px;line-height:28px;}
  h1{font-size:26px;line-height:34px;}
  .page-banner h1{font-size:26px;line-height:34px;}
  h2{font-size:22px;line-height:30px;}
  .container{padding:0 16px;}
  .main-nav{display:none;}
  .header-cta{display:none;}
  .nav-toggle{display:inline-flex;}
  .mobile-menu.is-open{display:block;}
  .page-banner{min-height:220px;}
  .page-banner .container{padding-top:32px;padding-bottom:32px;}
  .bento{grid-template-columns:1fr;gap:16px;}
  .col-3,.col-2{grid-column:span 1;}
  .steps{grid-template-columns:1fr;gap:0;}
  .steps::before{left:19px;right:auto;top:20px;bottom:20px;width:2px;height:auto;}
  .step{padding:0 0 26px 58px;}
  .step-num{top:0;left:0;}
  .tabbar{display:block;}
  main{padding-bottom:76px;}
  .cta-band{padding:52px 0;}
  .footer-grid{grid-template-columns:1fr;gap:24px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .faq-q{padding:16px 18px;font-size:16px;}
  .faq-a{padding:0 18px 18px;}
}
@media (max-width:520px){
  .btn{width:100%;height:44px;}
  .btn-inline{width:auto;}
  .section-head{margin-bottom:20px;}
}