/* roulang page: index */
:root{
    --brand:#1257C9;
    --brandDeep:#0C3F97;
    --brandSoft:#EEF4FF;
    --accent:#FF6A1A;
    --accentSoft:#FFF2E9;
    --mint:#0FBFA8;
    --amber:#F0B429;
    --error:#E5484D;
    --bg:#F5F7FB;
    --surface:#FFFFFF;
    --line:#E3E9F4;
    --text:#0F1E33;
    --text2:#5A6B85;
    --text3:#93A2B8;
    --r-card:14px;
    --r-btn:10px;
    --r-img:12px;
    --r-cta:20px;
    --sh1:0 1px 2px rgba(15,30,51,.05);
    --sh2:0 10px 28px -14px rgba(15,30,51,.22);
    --sh3:0 16px 36px -16px rgba(18,87,201,.28);
    --side:264px;
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    padding-bottom:96px;
    background:var(--bg);
    color:var(--text);
    font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
    font-size:16px;
    line-height:1.85;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;border-style:none;}
  a{color:var(--brand);text-decoration:none;}
  a:hover{color:var(--brandDeep);}
  button,input,textarea,select{font:inherit;color:inherit;}
  button{cursor:pointer;}
  h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0;}
  ul,ol{list-style:none;}
  .num{font-family:"Inter",ui-sans-serif,system-ui;font-variant-numeric:tabular-nums;}

  /* ---------- 布局骨架 ---------- */
  .shell{display:block;}
  .side-nav{
    position:fixed;top:0;left:0;bottom:0;width:var(--side);
    background:var(--surface);border-right:1px solid var(--line);
    box-shadow:var(--sh1);z-index:60;
    display:flex;flex-direction:column;padding:22px 18px 20px;
    overflow-y:auto;
  }
  .brand{display:flex;align-items:center;gap:12px;padding:2px 4px 20px;border-bottom:1px solid var(--line);}
  .brand-mark{
    width:40px;height:40px;border-radius:12px;flex:0 0 40px;
    background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center;
    font-weight:800;font-size:17px;letter-spacing:-.02em;box-shadow:var(--sh2);
  }
  .brand-text{display:flex;flex-direction:column;line-height:1.25;}
  .brand-text b{font-size:16px;font-weight:800;letter-spacing:-.01em;color:var(--text);}
  .brand-text span{font-size:12px;color:var(--text3);}
  .nav-group{margin-top:20px;display:flex;flex-direction:column;gap:4px;}
  .nav-label{font-size:12px;color:var(--text3);letter-spacing:.08em;padding:0 10px 8px;}
  .nav-item{
    position:relative;display:flex;align-items:center;gap:12px;
    height:44px;padding:0 12px;border-radius:var(--r-btn);
    font-size:15px;color:var(--text2);transition:background .2s,color .2s,transform .2s;
  }
  .nav-item svg{width:20px;height:20px;flex:0 0 20px;color:var(--text3);transition:color .2s;}
  .nav-item:hover{background:var(--brandSoft);color:var(--brandDeep);}
  .nav-item:hover svg{color:var(--accent);}
  .nav-item:active{transform:translateY(1px);}
  .nav-item:focus-visible{outline:3px solid rgba(18,87,201,.28);outline-offset:2px;}
  .nav-item.is-active{background:var(--brandSoft);color:var(--brandDeep);font-weight:700;}
  .nav-item.is-active svg{color:var(--brand);}
  .nav-item.is-active::before{
    content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;border-radius:0 3px 3px 0;
    background:var(--accent);
  }
  .side-cta{margin:20px 0 14px;}
  .side-foot{margin-top:auto;padding-top:16px;border-top:1px solid var(--line);font-size:12px;color:var(--text3);line-height:1.9;}
  .side-foot a{color:var(--text2);}
  .side-foot a:hover{color:var(--brand);}

  .main{margin-left:var(--side);}
  .container{max-width:1240px;margin:0 auto;padding:0 40px;}
  .section{padding:88px 0;}
  .section--tight{padding:64px 0;}

  /* ---------- 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:600;line-height:1;
    transition:background .2s,color .2s,box-shadow .2s,transform .2s,border-color .2s;
    text-align:center;white-space:nowrap;
  }
  .btn-primary{background:var(--accent);color:#fff;box-shadow:0 6px 16px -10px rgba(255,106,26,.9);}
  .btn-primary:hover{background:#ec5c0c;color:#fff;transform:translateY(-2px);box-shadow:var(--sh3);}
  .btn-primary:active{transform:translateY(0);background:#d9530a;}
  .btn-primary:focus-visible{outline:3px solid rgba(255,106,26,.35);outline-offset:2px;}
  .btn-secondary{background:var(--surface);color:var(--brand);border-color:rgba(18,87,201,.45);}
  .btn-secondary:hover{background:var(--brandSoft);color:var(--brandDeep);border-color:var(--brand);transform:translateY(-2px);}
  .btn-secondary:active{transform:translateY(0);background:#e2ecff;}
  .btn-secondary:focus-visible{outline:3px solid rgba(18,87,201,.3);outline-offset:2px;}
  .btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none;}
  .btn-sm{height:38px;padding:0 16px;font-size:14px;}
  .btn-block{width:100%;}
  .link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand);}
  .link-arrow svg{width:16px;height:16px;transition:transform .2s;}
  .link-arrow:hover{color:var(--brandDeep);}
  .link-arrow:hover svg{transform:translateX(4px);}
  .link-arrow:active{color:var(--accent);}
  .link-arrow:focus-visible{outline:3px solid rgba(18,87,201,.3);outline-offset:2px;border-radius:4px;}

  /* ---------- Hero ---------- */
  .hero{
    position:relative;overflow:hidden;border-bottom:1px solid var(--line);
    background:
      radial-gradient(circle at 1px 1px, rgba(18,87,201,.10) 1px, transparent 0) 0 0/22px 22px,
      linear-gradient(135deg,#F5F7FB 0%,#EEF4FF 58%,#F5F7FB 100%);
  }
  .hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;padding:72px 0 80px;}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;padding:5px 12px;border-radius:999px;
    background:var(--accentSoft);color:#B84508;font-size:12px;font-weight:700;letter-spacing:.04em;
  }
  .hero h1{
    font-size:40px;font-weight:800;line-height:1.25;letter-spacing:-.01em;margin:18px 0 14px;color:var(--text);
  }
  .hero-sub{font-size:17px;color:var(--text2);max-width:560px;}
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
  .hero-metrics{display:flex;flex-wrap:wrap;gap:36px;margin-top:36px;padding-top:26px;border-top:1px solid rgba(18,87,201,.14);}
  .metric b{display:block;font-size:28px;font-weight:800;color:var(--brandDeep);line-height:1.2;}
  .metric span{font-size:12px;color:var(--text3);}
  .hero-figure{border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh2);background:#EEF2F8;}
  .hero-figure img{width:100%;height:340px;object-fit:cover;}
  .hero-figure figcaption{font-size:13px;color:var(--text3);padding:12px 16px;background:var(--surface);}

  /* ---------- 板块标题 ---------- */
  .sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;}
  .sec-title{position:relative;padding-left:14px;font-size:26px;font-weight:700;line-height:1.3;color:var(--text);}
  .sec-title::before{content:"";position:absolute;left:0;top:6px;width:4px;height:20px;border-radius:2px;background:var(--brand);}
  .sec-desc{margin-top:10px;font-size:15px;color:var(--text2);max-width:640px;padding-left:14px;}

  /* ---------- 卡片 ---------- */
  .card{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
    box-shadow:var(--sh1);transition:border-color .25s,box-shadow .25s,transform .25s;
  }
  .card:hover{border-color:rgba(18,87,201,.3);box-shadow:var(--sh2);transform:translateY(-4px);}
  .card:focus-within{border-color:rgba(18,87,201,.45);box-shadow:var(--sh2);}
  .badge{
    display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:999px;
    font-size:12px;font-weight:600;line-height:1.6;
  }
  .badge-brand{background:var(--brandSoft);color:var(--brand);}
  .badge-mint{background:rgba(15,191,168,.12);color:#067A6B;}
  .badge-amber{background:var(--accentSoft);color:#B84508;}

  /* ---------- 卖点三连 ---------- */
  .usp-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:24px;align-items:stretch;}
  .usp-card{padding:28px 26px 24px;display:flex;flex-direction:column;}
  .usp-card--lead{background:var(--brandSoft);border-color:rgba(18,87,201,.22);}
  .usp-icon{
    width:44px;height:44px;border-radius:12px;background:var(--accentSoft);color:var(--accent);
    display:flex;align-items:center;justify-content:center;margin-bottom:16px;
  }
  .usp-icon svg{width:22px;height:22px;}
  .usp-card h3{font-size:19px;font-weight:700;margin-bottom:10px;}
  .usp-card p{font-size:15px;color:var(--text2);margin-bottom:18px;}
  .usp-card .link-arrow{margin-top:auto;}

  /* ---------- 内容列表 ---------- */
  .feed{display:grid;grid-template-columns:1.35fr 1fr;gap:24px;align-items:start;}
  .post-main{overflow:hidden;display:block;color:inherit;}
  .post-main .thumb{position:relative;overflow:hidden;background:#EEF2F8;aspect-ratio:16/9;}
  .post-main .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s;}
  .post-main:hover .thumb img{transform:scale(1.04);}
  .post-main .body{padding:22px 24px 24px;}
  .post-main h3{font-size:20px;font-weight:700;line-height:1.45;margin:12px 0 10px;color:var(--text);
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
  .post-main p{font-size:15px;color:var(--text2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
  .post-meta{display:flex;align-items:center;gap:12px;margin-top:16px;font-size:12px;color:var(--text3);}
  .post-list{display:flex;flex-direction:column;gap:16px;}
  .post-mini{display:block;padding:18px 20px;color:inherit;}
  .post-mini h4{font-size:16px;font-weight:700;line-height:1.5;color:var(--text);
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
  .post-mini p{font-size:14px;color:var(--text2);margin-top:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
  .post-mini .post-meta{margin-top:12px;}
  .feed-empty{
    border:2px dashed rgba(18,87,201,.3);background:var(--brandSoft);border-radius:var(--r-card);
    padding:44px 28px;text-align:center;
  }
  .feed-empty .ico{
    width:48px;height:48px;margin:0 auto 14px;border-radius:14px;background:#fff;color:var(--brand);
    display:flex;align-items:center;justify-content:center;box-shadow:var(--sh1);
  }
  .feed-empty p{color:var(--text2);font-size:15px;margin-bottom:18px;}
  .feed-empty .actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;}

  /* ---------- 场景演示 ---------- */
  .scene{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
  .scene + .scene{margin-top:64px;}
  .scene--reverse .scene-media{order:2;}
  .scene-no{font-size:36px;font-weight:800;color:var(--accent);opacity:.22;line-height:1;letter-spacing:-.02em;}
  .scene h3{font-size:22px;font-weight:700;margin:10px 0 14px;}
  .scene p{color:var(--text2);font-size:15px;}
  .check-list{margin-top:20px;display:flex;flex-direction:column;gap:12px;}
  .check-list li{display:flex;gap:10px;font-size:15px;color:var(--text2);}
  .check-list svg{width:18px;height:18px;flex:0 0 18px;color:var(--mint);margin-top:5px;}
  .scene-media{border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh2);background:#EEF2F8;}
  .scene-media img{width:100%;height:300px;object-fit:cover;}

  /* ---------- 数据横条与引用卡 ---------- */
  .stat-bar{
    display:grid;grid-template-columns:repeat(3,1fr);gap:24px;
    background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
    padding:32px 28px;box-shadow:var(--sh1);
  }
  .stat-bar .stat b{display:block;font-size:32px;font-weight:800;color:var(--brand);line-height:1.15;}
  .stat-bar .stat span{font-size:14px;color:var(--text2);}
  .quote-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:28px;}
  .quote{padding:24px 22px;position:relative;}
  .quote::before{content:"“";position:absolute;top:6px;left:16px;font-size:44px;color:rgba(18,87,201,.14);font-family:Georgia,serif;}
  .quote p{font-size:15px;color:var(--text2);padding-top:18px;}
  .quote cite{display:block;margin-top:14px;font-size:12px;color:var(--text3);font-style:normal;}

  /* ---------- FAQ ---------- */
  .faq-wrap{max-width:860px;margin:0 auto;}
  .faq-item{border:1px solid var(--line);border-radius:var(--r-card);background:var(--surface);margin-bottom:14px;overflow:hidden;transition:border-color .2s,box-shadow .2s;}
  .faq-item:hover{border-color:rgba(18,87,201,.3);box-shadow:var(--sh1);}
  .faq-item summary{
    list-style:none;cursor:pointer;padding:18px 22px;display:flex;align-items:center;justify-content:space-between;gap:16px;
    font-size:16px;font-weight:700;color:var(--text);
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary:focus-visible{outline:3px solid rgba(18,87,201,.3);outline-offset:-3px;}
  .faq-arrow{width:18px;height:18px;color:var(--accent);transition:transform .25s;flex:0 0 18px;}
  .faq-item[open] .faq-arrow{transform:rotate(180deg);}
  .faq-body{padding:0 22px 20px;font-size:15px;line-height:1.8;color:var(--text2);border-top:1px solid var(--line);padding-top:16px;}

  /* ---------- CTA 大卡 ---------- */
  .cta-card{
    background:var(--brandSoft);border:1px solid rgba(18,87,201,.18);border-radius:var(--r-cta);
    padding:40px 44px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  }
  .cta-card h2{font-size:26px;font-weight:800;line-height:1.3;color:var(--brandDeep);}
  .cta-card p{font-size:15px;color:var(--text2);margin-top:10px;max-width:620px;}

  /* ---------- 页脚 ---------- */
  .footer{background:var(--brandDeep);color:#D6E2F7;padding:64px 0 0;margin-top:0;}
  .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px;}
  .footer h3{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px;}
  .footer p{font-size:14px;color:#9FB4D6;line-height:1.9;}
  .footer a{color:#D6E2F7;font-size:14px;display:block;padding:5px 0;transition:color .2s,transform .2s;}
  .footer a:hover{color:#fff;transform:translateX(3px);}
  .footer a:active{color:#fff;}
  .footer a:focus-visible{outline:2px solid #7FA6E8;outline-offset:2px;border-radius:4px;}
  .footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
  .footer-brand .brand-mark{background:rgba(255,255,255,.12);box-shadow:none;}
  .footer-brand b{color:#fff;font-size:16px;font-weight:800;}
  .footer-bottom{border-top:1px solid rgba(255,255,255,.14);padding:20px 0;font-size:13px;color:#9FB4D6;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;}

  /* ---------- 底部固定转化条 ---------- */
  .bottom-bar{
    position:fixed;left:0;right:0;bottom:0;z-index:70;height:64px;
    background:rgba(255,255,255,.92);backdrop-filter:blur(8px);
    border-top:1px solid var(--line);box-shadow:var(--sh2);
    display:flex;align-items:center;
  }
  .bottom-bar .inner{
    width:100%;max-width:1240px;margin:0 auto;padding:0 40px;
    display:flex;align-items:center;justify-content:space-between;gap:20px;
  }
  .bottom-bar .status{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--text2);}
  .dot{width:8px;height:8px;border-radius:50%;background:var(--mint);box-shadow:0 0 0 4px rgba(15,191,168,.16);flex:0 0 8px;}

  /* ---------- 移动端 ---------- */
  .mobile-bar{
    display:none;position:fixed;top:0;left:0;right:0;height:56px;z-index:80;
    background:var(--surface);border-bottom:1px solid var(--line);align-items:center;gap:12px;padding:0 14px;
  }
  .mobile-bar .brand-mini{display:flex;align-items:center;gap:8px;font-weight:800;font-size:15px;color:var(--text);}
  .icon-btn{
    width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:#fff;color:var(--text2);
    display:flex;align-items:center;justify-content:center;transition:background .2s,color .2s,border-color .2s;
  }
  .icon-btn:hover{background:var(--brandSoft);color:var(--brand);border-color:rgba(18,87,201,.35);}
  .icon-btn:active{transform:translateY(1px);}
  .icon-btn:focus-visible{outline:3px solid rgba(18,87,201,.3);outline-offset:2px;}
  .icon-btn svg{width:20px;height:20px;}
  .drawer-mask{
    position:fixed;inset:0;background:rgba(15,30,51,.45);z-index:85;opacity:0;visibility:hidden;transition:opacity .25s,visibility .25s;
  }
  .drawer-mask.is-open{opacity:1;visibility:visible;}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:6px;}

  @media (max-width:1023px){
    .side-nav{
      transform:translateX(-100%);transition:transform .28s ease;width:280px;z-index:90;
    }
    .side-nav.is-open{transform:translateX(0);}
    .mobile-bar{display:flex;}
    .main{margin-left:0;padding-top:56px;}
    .container{padding:0 24px;}
    .section{padding:64px 0;}
    .section--tight{padding:48px 0;}
    .hero-grid{grid-template-columns:1fr;gap:32px;padding:48px 0 56px;}
    .hero h1{font-size:32px;}
    .usp-grid{grid-template-columns:1fr 1fr;}
    .usp-card--lead{grid-column:1 / -1;}
    .feed{grid-template-columns:1fr;}
    .scene{grid-template-columns:1fr;gap:28px;}
    .scene--reverse .scene-media{order:0;}
    .quote-grid{grid-template-columns:1fr;}
    .stat-bar{grid-template-columns:1fr;gap:20px;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
    .bottom-bar .inner{padding:0 24px;}
  }
  @media (max-width:640px){
    body{padding-bottom:88px;}
    .container{padding:0 16px;}
    .section{padding:48px 0;}
    .hero h1{font-size:27px;}
    .hero-sub{font-size:15px;}
    .hero-actions .btn{width:100%;}
    .hero-metrics{gap:24px;}
    .hero-figure img{height:220px;}
    .sec-title{font-size:22px;}
    .usp-grid{grid-template-columns:1fr;}
    .cta-card{padding:28px 22px;}
    .cta-card h2{font-size:21px;}
    .footer-grid{grid-template-columns:1fr;}
    .bottom-bar{height:60px;}
    .bottom-bar .status{font-size:13px;}
  }
  @media (min-width:1440px){
    .container{padding:0 48px;}
  }

/* roulang page: category1 */
:root{
  --brand:#1257C9;
  --brandDeep:#0C3F97;
  --brandSoft:#EEF4FF;
  --accent:#FF6A1A;
  --accentDeep:#E85B0E;
  --accentSoft:#FFF2E9;
  --mint:#0FBFA8;
  --mintSoft:#E6FAF7;
  --amber:#F0B429;
  --amberSoft:#FFF7E3;
  --err:#E5484D;
  --bg:#F5F7FB;
  --surface:#FFFFFF;
  --line:#E3E9F4;
  --text:#0F1E33;
  --text2:#5A6B85;
  --text3:#93A2B8;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --sh1:0 1px 2px rgba(15,30,51,.05);
  --sh2:0 10px 28px -14px rgba(15,30,51,.22);
  --sh3:0 16px 36px -16px rgba(18,87,201,.28);
  --nav-w:264px;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;cursor:pointer;border:0;background:none;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
input,textarea,select{font-family:inherit;font-size:15px;color:var(--text);}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 40px;}

/* ---------- 左侧 App Shell ---------- */
.side-nav{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--nav-w);
  background:var(--surface);
  border-right:1px solid var(--line);
  box-shadow:0 0 24px -20px rgba(15,30,51,.35);
  display:flex;
  flex-direction:column;
  padding:22px 16px 96px;
  z-index:70;
  overflow-y:auto;
}
.brand{
  display:flex;align-items:center;gap:10px;
  padding:6px 8px 18px;
  border-bottom:1px solid var(--line);
  margin-bottom:16px;
  border-radius:12px;
  transition:background .2s ease;
}
.brand:hover{background:var(--brandSoft);}
.brand-mark{
  flex:0 0 auto;
  width:40px;height:40px;border-radius:12px;
  background:var(--brand);color:#fff;
  display:grid;place-items:center;
  font-size:19px;font-weight:800;
  box-shadow:var(--sh1);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-text b{font-size:16px;font-weight:800;color:var(--brandDeep);letter-spacing:-.01em;}
.brand-text i{font-style:normal;font-size:12px;color:var(--text3);letter-spacing:.04em;}

.nav-group{display:flex;flex-direction:column;gap:2px;}
.nav-label{
  font-size:11px;font-weight:700;letter-spacing:.14em;
  color:var(--text3);text-transform:uppercase;
  padding:4px 8px 8px;
}
.nav-item{
  position:relative;
  display:flex;align-items:center;gap:10px;
  height:44px;padding:0 12px;
  border-radius:10px;
  font-size:15px;color:var(--text2);
  transition:background .18s ease,color .18s ease,transform .18s ease;
}
.nav-item svg{width:20px;height:20px;flex:0 0 auto;color:var(--text3);transition:color .18s ease;}
.nav-item:hover{background:var(--brandSoft);color:var(--brandDeep);}
.nav-item:hover svg{color:var(--accent);}
.nav-item:active{background:#E2EBFF;transform:translateY(1px);}
.nav-item.is-active{
  background:var(--brandSoft);
  color:var(--brandDeep);
  font-weight:700;
}
.nav-item.is-active svg{color:var(--brand);}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;
  width:3px;border-radius:0 3px 3px 0;background:var(--accent);
}

.side-cta{margin:20px 0 8px;}
.side-foot{
  margin-top:auto;padding:16px 8px 0;
  border-top:1px solid var(--line);
  font-size:12px;line-height:1.8;color:var(--text3);
}
.side-foot a{color:var(--brand);}
.side-foot a:hover{color:var(--brandDeep);text-decoration:underline;}
.side-foot a:active{color:var(--accent);}

/* ---------- 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:700;
  transition:background .2s ease,color .2s ease,box-shadow .2s ease,transform .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 10px 22px -14px rgba(255,106,26,.85);}
.btn-primary:hover{background:var(--accentDeep);transform:translateY(-2px);box-shadow:var(--sh3);}
.btn-primary:active{transform:translateY(0);background:#D55309;}
.btn-primary:focus-visible{outline:2px solid var(--brandDeep);outline-offset:2px;}
.btn-primary[disabled],.btn[aria-disabled="true"]{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none;}

.btn-secondary{background:#fff;color:var(--brand);border:1px solid var(--brand);}
.btn-secondary:hover{background:var(--brandSoft);transform:translateY(-2px);box-shadow:var(--sh2);}
.btn-secondary:active{background:#DCE8FF;transform:translateY(0);}
.btn-secondary[disabled]{opacity:.4;cursor:not-allowed;transform:none;}

.btn-ghost{background:transparent;color:var(--brandDeep);border:1px solid var(--line);}
.btn-ghost:hover{background:var(--brandSoft);border-color:rgba(18,87,201,.35);}
.btn-ghost:active{background:#DCE8FF;}

.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn-block{width:100%;}

.btn-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:700;color:var(--brand);
}
.btn-link svg{width:16px;height:16px;transition:transform .2s ease;}
.btn-link:hover{color:var(--brandDeep);}
.btn-link:hover svg{transform:translateX(4px);}
.btn-link:active{color:var(--accent);}
.btn-link:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}

/* ---------- 移动端顶栏 / 抽屉 ---------- */
.mobile-top{
  display:none;
  position:fixed;top:0;left:0;right:0;height:56px;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--line);
  box-shadow:var(--sh1);
  align-items:center;justify-content:space-between;
  padding:0 12px;z-index:80;
  backdrop-filter:saturate(150%) blur(6px);
}
.hamburger{
  width:40px;height:40px;border-radius:10px;
  display:grid;place-items:center;color:var(--brandDeep);
  transition:background .18s ease;
}
.hamburger:hover{background:var(--brandSoft);}
.hamburger:active{background:#DCE8FF;}
.mobile-brand{display:flex;align-items:center;gap:8px;font-weight:800;color:var(--brandDeep);font-size:15px;}
.mobile-brand .brand-mark{width:30px;height:30px;border-radius:9px;font-size:14px;}

.drawer-overlay{
  position:fixed;inset:0;background:rgba(15,30,51,.45);
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;
  z-index:88;
}
.drawer-overlay.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;left:0;bottom:0;width:280px;
  background:#fff;z-index:90;
  transform:translateX(-100%);
  transition:transform .28s ease;
  padding:18px 16px 96px;
  overflow-y:auto;
  border-right:1px solid var(--line);
}
.drawer.is-open{transform:translateX(0);}

/* ---------- 主内容 ---------- */
.page{
  margin-left:var(--nav-w);
  padding-bottom:84px;
  min-height:100vh;
}

/* Hero */
.hero{padding:28px 0 0;}
.hero-media{
  position:relative;
  border-radius:var(--r-card);
  overflow:hidden;
  background:#EEF2F8;
  min-height:340px;
  display:flex;align-items:flex-end;
  box-shadow:var(--sh2);
}
.hero-media > img{
  position:absolute;inset:0;width:100%;height:100%;
  object-fit:cover;
}
.hero-shade{
  position:absolute;inset:0;
  background:linear-gradient(96deg,rgba(255,255,255,.96) 0%,rgba(255,255,255,.86) 42%,rgba(238,244,255,.42) 78%,rgba(238,244,255,.16) 100%);
}
.hero-copy{
  position:relative;z-index:2;
  padding:40px;max-width:760px;
}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:999px;
  font-size:12px;font-weight:700;letter-spacing:.02em;
  background:var(--brandSoft);color:var(--brand);
}
.badge-accent{background:var(--accentSoft);color:#C24A08;}
.badge-mint{background:var(--mintSoft);color:#0A8574;}
.badge-amber{background:var(--amberSoft);color:#95690A;}

.hero h1{
  font-size:38px;font-weight:800;line-height:1.25;
  letter-spacing:-.01em;color:var(--brandDeep);
  margin:14px 0 12px;
}
.hero .lede{
  font-size:16px;color:var(--text2);
  max-width:640px;margin-bottom:22px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* 面包屑 */
.crumbs{
  display:flex;align-items:center;gap:8px;
  font-size:13px;color:var(--text3);
  padding:16px 0 0;
}
.crumbs a{color:var(--text3);transition:color .18s ease;}
.crumbs a:hover{color:var(--brand);}
.crumbs a:active{color:var(--accent);}
.crumbs .sep{color:#C3CEDF;}
.crumbs .current{color:var(--text2);}

/* 锚点 chips */
.chip-bar{
  display:flex;flex-wrap:wrap;gap:10px;
  padding:26px 0 0;
}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  height:36px;padding:0 16px;
  border-radius:999px;
  background:#fff;border:1px solid var(--line);
  font-size:14px;color:var(--text2);
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease;
}
.chip:hover{background:var(--brandSoft);color:var(--brandDeep);border-color:rgba(18,87,201,.35);transform:translateY(-2px);}
.chip:active{transform:translateY(0);background:#DCE8FF;}
.chip:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}

/* 板块 */
.section{padding:64px 0 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:28px;}
.section-head h2{
  position:relative;
  font-size:26px;font-weight:700;line-height:1.35;color:var(--text);
  padding-left:14px;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:.28em;bottom:.28em;width:4px;border-radius:2px;background:var(--brand);
}
.section-head p{font-size:15px;color:var(--text2);max-width:640px;padding-left:14px;margin-top:6px;}

/* 时间轴 */
.timeline{position:relative;padding-left:44px;}
.timeline::before{
  content:"";position:absolute;left:13px;top:12px;bottom:12px;
  border-left:2px dashed #FFCFB0;
}
.tl-item{position:relative;margin-bottom:22px;}
.tl-item:last-child{margin-bottom:0;}
.tl-dot{
  position:absolute;left:-44px;top:6px;
  width:28px;height:28px;border-radius:999px;
  background:var(--accent);color:#fff;
  display:grid;place-items:center;
  font-size:13px;font-weight:800;
  font-family:"Inter",ui-sans-serif,sans-serif;
  box-shadow:0 8px 18px -10px rgba(255,106,26,.9);
  border:3px solid #fff;
}
.tl-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh1);
  padding:22px 24px;
  transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.tl-card:hover{border-color:rgba(18,87,201,.3);box-shadow:var(--sh2);transform:translateY(-4px);}
.tl-card h3{font-size:18px;font-weight:700;color:var(--text);margin-bottom:8px;}
.tl-card p{font-size:15px;color:var(--text2);}
.tl-card p + p{margin-top:6px;}
.tip{
  margin-top:14px;
  background:var(--accentSoft);
  border-left:3px solid var(--accent);
  border-radius:0 8px 8px 0;
  padding:10px 14px;
  font-size:14px;color:#8A4212;
}
.tip-info{background:var(--brandSoft);border-left-color:var(--brand);color:#1B3F7F;}
.tip-success{background:var(--mintSoft);border-left-color:var(--mint);color:#0A6E60;}
.tip-warn{background:var(--amberSoft);border-left-color:var(--amber);color:#8A6109;}

/* 图文块 */
.split{
  display:grid;grid-template-columns:1.5fr 1fr;gap:32px;align-items:center;
}
.split-media{
  border-radius:var(--r-card);overflow:hidden;
  background:#EEF2F8;border:1px solid var(--line);
  box-shadow:var(--sh1);
}
.split-media img{width:100%;height:100%;min-height:240px;object-fit:cover;transition:transform .4s ease;}
.split-media:hover img{transform:scale(1.04);}
.split-body h2{font-size:24px;font-weight:700;padding-left:14px;position:relative;margin-bottom:12px;}
.split-body h2::before{
  content:"";position:absolute;left:0;top:.28em;bottom:.28em;width:4px;border-radius:2px;background:var(--brand);
}
.split-body p{font-size:15px;color:var(--text2);}

.check-list{margin-top:16px;display:flex;flex-direction:column;gap:10px;}
.check-list li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--text2);}
.check-list svg{width:20px;height:20px;flex:0 0 auto;color:var(--mint);margin-top:3px;}

/* 卡片网格 */
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh1);
  padding:22px 24px;
  transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.card:hover{border-color:rgba(18,87,201,.3);box-shadow:var(--sh2);transform:translateY(-4px);}
.card h3{font-size:17px;font-weight:700;margin-bottom:8px;}
.card p{font-size:14.5px;color:var(--text2);}
.card-meta{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:10px;}

/* FAQ */
.faq-wrap{max-width:900px;}
.faq-item{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh1);
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item:hover{border-color:rgba(18,87,201,.3);box-shadow:var(--sh2);}
.faq-item summary{
  list-style:none;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;
  font-size:16px;font-weight:700;color:var(--text);
  cursor:pointer;
  transition:background .18s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{background:var(--brandSoft);}
.faq-item summary:active{background:#DCE8FF;}
.faq-item summary:focus-visible{outline:2px solid var(--brand);outline-offset:-2px;}
.faq-item .chev{width:18px;height:18px;flex:0 0 auto;color:var(--accent);transition:transform .25s ease;}
.faq-item[open] .chev{transform:rotate(180deg);}
.faq-body{padding:0 22px 20px;font-size:15px;line-height:1.8;color:var(--text2);}
.faq-body p + p{margin-top:8px;}

/* CTA 大卡 */
.cta-card{
  margin-top:64px;
  background:var(--brandSoft);
  border-radius:20px;
  padding:36px 40px;
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
  border:1px solid rgba(18,87,201,.12);
}
.cta-card h2{font-size:24px;font-weight:700;color:var(--brandDeep);margin-bottom:8px;}
.cta-card p{font-size:15px;color:var(--text2);max-width:560px;}

/* 底部固定转化条 */
.conversion-bar{
  position:fixed;left:0;right:0;bottom:0;height:64px;
  background:rgba(255,255,255,.92);
  border-top:1px solid var(--line);
  box-shadow:0 -8px 24px -18px rgba(15,30,51,.35);
  backdrop-filter:saturate(150%) blur(8px);
  z-index:75;
  display:flex;align-items:center;
}
.conv-inner{
  width:100%;max-width:1240px;margin:0 auto;
  padding:0 40px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.conv-status{
  display:flex;align-items:center;gap:8px;
  font-size:14px;color:var(--text2);
}
.conv-status .dot{
  width:8px;height:8px;border-radius:999px;background:var(--mint);
  box-shadow:0 0 0 4px rgba(15,191,168,.18);
}

/* 页脚 */
.footer{
  background:var(--brandDeep);
  color:#D6E2F7;
  margin-top:72px;
  padding:56px 0 24px;
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.1fr;gap:32px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand .brand-mark{background:#fff;color:var(--brandDeep);}
.footer-brand b{font-size:16px;font-weight:800;color:#fff;}
.footer p{font-size:14px;line-height:1.8;color:#9FB4D6;}
.footer h3{font-size:14px;font-weight:700;color:#fff;margin-bottom:14px;letter-spacing:.02em;}
.footer a{display:block;font-size:14px;color:#9FB4D6;padding:5px 0;transition:color .18s ease,transform .18s ease;}
.footer a:hover{color:#fff;transform:translateX(3px);}
.footer a:active{color:var(--accent);}
.footer a:focus-visible{outline:2px solid #fff;outline-offset:2px;}
.footer-bottom{
  margin-top:36px;padding-top:18px;
  border-top:1px solid rgba(255,255,255,.16);
  display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:13px;color:#9FB4D6;
}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .side-nav{display:none;}
  .mobile-top{display:flex;}
  .page{margin-left:0;padding-top:56px;}
  .container{padding:0 24px;}
  .conv-inner{padding:0 24px;}
  .hero h1{font-size:30px;}
  .split{grid-template-columns:1fr;}
  .grid-2{grid-template-columns:1fr;}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .section{padding-top:56px;}
}
@media (max-width:639px){
  .container{padding:0 16px;}
  .conv-inner{padding:0 16px;}
  .hero-media{min-height:300px;}
  .hero-copy{padding:24px;}
  .hero h1{font-size:26px;}
  .section-head h2{font-size:22px;}
  .cta-card{padding:26px 22px;}
  .cta-card h2{font-size:20px;}
  .grid-3{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .conversion-bar{height:60px;}
  .conv-status{font-size:12.5px;}
  .page{padding-bottom:78px;}
  .timeline{padding-left:38px;}
  .tl-dot{left:-38px;width:26px;height:26px;font-size:12px;}
  .timeline::before{left:12px;}
}

/* roulang page: article */
:root{
  --brand:#1257C9; --brand-deep:#0C3F97; --brand-soft:#EEF4FF;
  --accent:#FF6A1A; --accent-dark:#F05A0A; --accent-down:#D94F08; --accent-soft:#FFF2E9;
  --mint:#0FBFA8; --mint-soft:#E7FBF7; --amber:#F0B429; --amber-soft:#FFF6E2; --danger:#E5484D;
  --bg:#F5F7FB; --surface:#FFFFFF; --line:#E3E9F4;
  --ink:#0F1E33; --ink2:#5A6B85; --ink3:#93A2B8;
  --r-card:14px; --r-btn:10px; --r-img:12px;
  --sh1:0 1px 2px rgba(15,30,51,.05);
  --sh2:0 10px 28px -14px rgba(15,30,51,.22);
  --sh3:0 16px 36px -16px rgba(18,87,201,.28);
  --nav-w:264px;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
}

*,*::before,*::after{ box-sizing:border-box; }
html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth; }
body{
  margin:0; padding-bottom:84px;
  background:var(--bg); color:var(--ink);
  font-family:var(--font-cn); font-size:16px; line-height:1.85;
}
img{ max-width:100%; display:block; }
a{ color:var(--brand); text-decoration:none; transition:color .18s ease; }
a:hover{ color:var(--brand-deep); }
button{ font:inherit; color:inherit; }
:focus-visible{ outline:2px solid var(--brand); outline-offset:2px; }
h1,h2,h3,h4,p,ul,ol,figure,table{ margin-top:0; }

.container{ width:100%; max-width:1240px; margin:0 auto; padding:0 40px; }
.page-main{ padding:28px 0 0; }

/* ---------- 左侧导航 ---------- */
.side-nav{
  position:fixed; left:0; top:0; bottom:0; width:var(--nav-w);
  background:var(--surface); border-right:1px solid var(--line);
  box-shadow:0 1px 2px rgba(15,30,51,.04);
  display:flex; flex-direction:column; gap:18px;
  padding:22px 18px 20px; overflow-y:auto; z-index:60;
}
.brand{ display:flex; align-items:center; gap:12px; padding:6px 8px; border-radius:12px; transition:background .18s ease; }
.brand:hover{ background:var(--brand-soft); }
.brand-mark{
  width:40px; height:40px; flex:none; border-radius:12px;
  background:var(--brand); color:#fff; font-weight:800; font-size:20px;
  display:grid; place-items:center; letter-spacing:-.02em; box-shadow:var(--sh2);
}
.brand-text{ display:flex; flex-direction:column; line-height:1.25; }
.brand-text b{ font-size:17px; font-weight:800; color:var(--ink); letter-spacing:-.01em; }
.brand-text em{ font-style:normal; font-size:12px; color:var(--ink3); letter-spacing:.08em; }

.nav-group{ display:flex; flex-direction:column; gap:4px; }
.nav-label{ font-size:12px; color:var(--ink3); letter-spacing:.14em; padding:0 12px 6px; }
.nav-item{
  position:relative; display:flex; align-items:center; gap:10px;
  height:44px; padding:0 12px; border-radius:var(--r-btn);
  color:var(--ink2); font-size:15px; font-weight:500; transition:background .18s, color .18s, transform .18s;
}
.nav-item svg{ width:20px; height:20px; flex:none; color:var(--ink3); transition:color .18s; }
.nav-item:hover{ background:var(--brand-soft); color:var(--brand-deep); }
.nav-item:hover svg{ color:var(--accent); }
.nav-item:active{ transform:translateY(1px); }
.nav-item.is-active{ background:var(--brand-soft); color:var(--brand-deep); font-weight:700; }
.nav-item.is-active::before{
  content:""; position:absolute; left:0; top:10px; bottom:10px; width:3px;
  border-radius:2px; background:var(--accent);
}
.nav-item.is-active svg{ color:var(--brand); }

.nav-cta{ width:100%; }
.nav-foot{ margin-top:auto; padding-top:16px; border-top:1px solid var(--line); }
.nav-foot p{ margin:0 0 6px; font-size:12px; line-height:1.7; color:var(--ink3); }

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  height:44px; padding:0 20px; border-radius:var(--r-btn);
  border:1px solid transparent; font-size:15px; font-weight:700; cursor:pointer;
  transition:transform .18s ease, box-shadow .18s ease, background .18s ease, color .18s ease, border-color .18s ease;
}
.btn-primary{ background:var(--accent); color:#fff; box-shadow:var(--sh1); }
.btn-primary:hover{ background:var(--accent-dark); color:#fff; transform:translateY(-2px); box-shadow:var(--sh3); }
.btn-primary:active{ background:var(--accent-down); transform:translateY(0); box-shadow:var(--sh1); }
.btn-primary:disabled{ opacity:.4; cursor:not-allowed; transform:none; box-shadow:none; }
.btn-ghost{ background:#fff; color:var(--brand); border-color:rgba(18,87,201,.35); }
.btn-ghost:hover{ background:var(--brand-soft); color:var(--brand-deep); transform:translateY(-2px); box-shadow:var(--sh2); }
.btn-ghost:active{ transform:translateY(0); box-shadow:none; }
.btn-ghost:disabled{ opacity:.4; cursor:not-allowed; transform:none; box-shadow:none; }
.btn-sm{ height:36px; padding:0 14px; font-size:13px; border-radius:8px; }
.btn-text{
  display:inline-flex; align-items:center; gap:6px; padding:0; border:0; background:none;
  color:var(--brand); font-size:14px; font-weight:700; cursor:pointer;
}
.btn-text svg{ width:16px; height:16px; transition:transform .18s ease; }
.btn-text:hover{ color:var(--brand-deep); }
.btn-text:hover svg{ transform:translateX(4px); }
.btn-text:active{ opacity:.72; }
.btn-text:disabled{ opacity:.4; cursor:not-allowed; }

/* ---------- 移动端顶栏 / 抽屉 ---------- */
.topbar{
  display:none; position:fixed; top:0; left:0; right:0; height:56px; z-index:70;
  align-items:center; gap:12px; padding:0 16px;
  background:var(--surface); border-bottom:1px solid var(--line); box-shadow:var(--sh1);
}
.hamburger{
  width:38px; height:38px; flex:none; display:grid; place-items:center;
  background:#fff; border:1px solid var(--line); border-radius:10px; cursor:pointer; transition:background .18s,border-color .18s;
}
.hamburger:hover{ background:var(--brand-soft); border-color:rgba(18,87,201,.3); }
.hamburger:active{ transform:translateY(1px); }
.hamburger svg{ width:20px; height:20px; color:var(--brand-deep); }
.topbar-brand{ font-size:16px; font-weight:800; color:var(--ink); letter-spacing:-.01em; }
.topbar .btn{ margin-left:auto; }
.drawer-mask{ display:none; }
.drawer-mask.is-open{ display:block; position:fixed; inset:0; background:rgba(15,30,51,.45); z-index:80; }

/* ---------- 面包屑 ---------- */
.crumb{ display:flex; flex-wrap:wrap; align-items:center; gap:8px; font-size:13px; color:var(--ink3); margin-bottom:16px; }
.crumb a{ color:var(--ink3); }
.crumb a:hover{ color:var(--brand); }
.crumb .sep{ color:#C6D2E4; }
.crumb .current{ color:var(--ink2); }

/* ---------- 徽章 / 胶囊 ---------- */
.badge{ display:inline-flex; align-items:center; gap:6px; font-size:12px; padding:4px 10px; border-radius:999px; }
.badge-cat{ background:var(--brand-soft); color:var(--brand); font-weight:600; }
.badge-mint{ background:var(--mint-soft); color:#0A8C7C; font-weight:600; }
.badge-amber{ background:var(--amber-soft); color:#9A6B06; font-weight:600; }

/* ---------- 文章头部 ---------- */
.article-head{
  background:var(--surface); border:1px solid var(--line); border-radius:var(--r-card);
  padding:32px 36px; box-shadow:var(--sh1);
}
.article-title{
  font-size:34px; font-weight:800; line-height:1.25; letter-spacing:-.01em;
  color:var(--ink); margin:14px 0 16px;
}
.meta-row{ display:flex; flex-wrap:wrap; align-items:center; gap:14px; font-size:13px; color:var(--ink3); }
.meta-row .dot{ width:4px; height:4px; border-radius:50%; background:#C6D2E4; }
.head-divider{ height:1px; background:var(--line); margin:24px 0 0; }

/* ---------- 文章双栏 ---------- */
.article-wrap{ display:grid; grid-template-columns:1fr; gap:32px; margin-top:24px; }
.article-card{
  background:var(--surface); border:1px solid var(--line); border-radius:var(--r-card);
  padding:36px; box-shadow:var(--sh1);
}

.prose{ max-width:760px; font-size:17px; line-height:1.9; color:var(--ink); }
.prose p{ margin:0 0 1.1em; }
.prose h2{
  position:relative; font-size:24px; font-weight:700; line-height:1.3;
  margin:40px 0 16px; padding-left:14px; color:var(--ink);
}
.prose h2::before{
  content:""; position:absolute; left:0; top:.34em; width:4px; height:20px;
  border-radius:2px; background:var(--brand);
}
.prose h3{ font-size:19px; font-weight:700; line-height:1.4; margin:28px 0 12px; color:var(--ink); }
.prose h4{ font-size:16px; font-weight:600; margin:22px 0 10px; color:var(--ink); }
.prose ul,.prose ol{ margin:0 0 1.2em; padding-left:1.6em; }
.prose ul{ list-style:none; }
.prose ul li{ position:relative; margin-bottom:.5em; }
.prose ul li::before{
  content:""; position:absolute; left:-1.15em; top:.72em; width:7px; height:7px;
  border-radius:2px; background:var(--accent);
}
.prose ol{ list-style:none; counter-reset:li; }
.prose ol li{ position:relative; counter-increment:li; margin-bottom:.6em; }
.prose ol li::before{
  content:counter(li); position:absolute; left:-2em; top:.28em;
  width:22px; height:22px; border-radius:6px; background:var(--brand-soft); color:var(--brand);
  font-size:13px; font-weight:700; display:grid; place-items:center; line-height:1;
}
.prose blockquote{
  margin:24px 0; padding:20px; background:var(--brand-soft);
  border-left:3px solid var(--accent); border-radius:0 12px 12px 0; color:var(--ink2);
}
.prose blockquote p:last-child{ margin-bottom:0; }
.prose img{ border-radius:var(--r-img); margin:24px auto; }
.prose figure{ margin:24px 0; }
.prose figcaption{ font-size:13px; color:var(--ink3); text-align:center; margin-top:10px; }
.prose table{ width:100%; border-collapse:collapse; font-size:15px; margin:24px 0; border:1px solid var(--line); border-radius:12px; overflow:hidden; }
.prose th{ background:var(--brand-soft); color:var(--brand-deep); font-weight:700; text-align:left; padding:12px 14px; border-bottom:1px solid var(--line); }
.prose td{ padding:12px 14px; border-bottom:1px solid var(--line); color:var(--ink2); }
.prose tbody tr:hover{ background:#F8FAFD; }
.prose a{ color:var(--brand); text-decoration:underline; text-underline-offset:3px; }
.prose a:hover{ color:var(--brand-deep); }

.inline-cta{
  display:flex; flex-wrap:wrap; align-items:center; justify-content:space-between; gap:16px;
  background:var(--brand-soft); border-radius:12px; padding:18px 20px; margin:32px 0 0;
}
.inline-cta p{ margin:0; font-size:15px; color:var(--brand-deep); font-weight:600; }

.tag-row{ display:flex; flex-wrap:wrap; align-items:center; gap:10px; margin-top:28px; padding-top:24px; border-top:1px solid var(--line); }
.tag-row .tag-label{ font-size:13px; color:var(--ink3); }
.tag{ background:#F2F5FB; color:var(--ink2); font-size:12px; padding:5px 12px; border-radius:999px; border:1px solid var(--line); transition:.18s; }
.tag:hover{ background:var(--brand-soft); color:var(--brand); border-color:rgba(18,87,201,.3); }
.action-row{ display:flex; flex-wrap:wrap; align-items:center; gap:12px; margin-top:22px; }

.empty-state{
  border:1px dashed #C7D5EC; background:#FAFBFE; border-radius:var(--r-card);
  padding:44px 24px; text-align:center;
}
.empty-icon{
  width:52px; height:52px; margin:0 auto 16px; border-radius:16px;
  background:var(--brand-soft); color:var(--brand); display:grid; place-items:center;
}
.empty-icon svg{ width:26px; height:26px; }
.empty-state h3{ margin:0 0 8px; font-size:19px; font-weight:700; }
.empty-state p{ margin:0 0 20px; color:var(--ink2); font-size:15px; }

/* ---------- 侧栏 ---------- */
.side-panel{ display:flex; flex-direction:column; gap:24px; }
.panel{ background:var(--surface); border:1px solid var(--line); border-radius:var(--r-card); padding:22px; box-shadow:var(--sh1); }
.panel h3{ font-size:16px; font-weight:700; margin:0 0 14px; display:flex; align-items:center; gap:8px; color:var(--ink); }
.panel h3::before{ content:""; width:4px; height:16px; border-radius:2px; background:var(--brand); }
.plain-list{ list-style:none; margin:0; padding:0; }
.plain-list li{ border-bottom:1px dashed var(--line); padding:11px 0; }
.plain-list li:last-child{ border-bottom:0; padding-bottom:0; }
.plain-list a{ display:block; font-size:14px; line-height:1.6; color:var(--ink); font-weight:500; }
.plain-list a:hover{ color:var(--brand); }
.plain-list span{ display:block; font-size:12px; color:var(--ink3); margin-top:5px; font-variant-numeric:tabular-nums; }
.cta-card{ background:var(--brand-soft); border:1px solid rgba(18,87,201,.16); border-radius:var(--r-card); padding:22px; }
.cta-card b{ display:block; font-size:16px; color:var(--brand-deep); margin-bottom:8px; }
.cta-card p{ margin:0 0 16px; font-size:14px; color:var(--ink2); line-height:1.75; }

/* ---------- 相关推荐 ---------- */
.related{ margin-top:56px; }
.sec-title{ position:relative; font-size:24px; font-weight:700; line-height:1.3; padding-left:14px; margin:0 0 22px; }
.sec-title::before{ content:""; position:absolute; left:0; top:.28em; width:4px; height:20px; border-radius:2px; background:var(--brand); }
.related-grid{ display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:24px; }
.mini-card{
  display:flex; flex-direction:column; overflow:hidden; background:var(--surface);
  border:1px solid var(--line); border-radius:var(--r-card); box-shadow:var(--sh1);
  transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.mini-card:hover{ transform:translateY(-4px); box-shadow:var(--sh2); border-color:rgba(18,87,201,.3); }
.mini-thumb{ aspect-ratio:16/9; background:#EEF2F8; overflow:hidden; }
.mini-thumb img{ width:100%; height:100%; object-fit:cover; transition:transform .35s ease; }
.mini-card:hover .mini-thumb img{ transform:scale(1.04); }
.mini-body{ padding:16px 18px 18px; display:flex; flex-direction:column; gap:10px; flex:1; }
.mini-body h3{ font-size:16px; font-weight:700; line-height:1.5; margin:0; color:var(--ink); }
.mini-card:hover h3{ color:var(--brand-deep); }
.mini-meta{ display:flex; align-items:center; gap:10px; font-size:12px; color:var(--ink3); margin-top:auto; }
.mini-body p{ margin:0; font-size:14px; color:var(--ink2); line-height:1.7; }

/* ---------- 底部固定条 ---------- */
.dock-bar{
  position:fixed; left:0; right:0; bottom:0; height:64px; z-index:65;
  display:flex; align-items:center; justify-content:space-between; gap:16px; padding:0 24px;
  background:rgba(255,255,255,.92); -webkit-backdrop-filter:blur(6px); backdrop-filter:blur(6px);
  border-top:1px solid var(--line); box-shadow:0 -10px 28px -14px rgba(15,30,51,.22);
}
.dock-text{ display:flex; align-items:center; gap:8px; font-size:14px; color:var(--ink2); }
.dock-dot{ width:8px; height:8px; border-radius:50%; background:var(--mint); box-shadow:0 0 0 3px rgba(15,191,168,.16); }

/* ---------- 页脚 ---------- */
.footer{ background:var(--brand-deep); color:#D6E2F7; margin-top:88px; padding:64px 0 32px; }
.footer-grid{ display:grid; grid-template-columns:1.5fr 1fr 1fr 1.2fr; gap:40px; }
.footer-grid h3{ font-size:15px; font-weight:700; color:#fff; margin:0 0 14px; }
.footer-grid a{ display:block; font-size:14px; color:#9FB4D6; padding:5px 0; }
.footer-grid a:hover{ color:#fff; transform:translateX(3px); }
.footer-grid p{ font-size:14px; color:#9FB4D6; margin:0 0 8px; line-height:1.8; }
.footer-brand{ display:flex; align-items:center; gap:10px; margin-bottom:14px; }
.footer-brand .brand-mark{ width:36px; height:36px; font-size:18px; border-radius:10px; background:#fff; color:var(--brand-deep); box-shadow:none; }
.footer-brand b{ color:#fff; font-size:17px; font-weight:800; }
.footer-bottom{
  display:flex; flex-wrap:wrap; justify-content:space-between; gap:12px;
  margin-top:40px; padding-top:20px; border-top:1px solid rgba(255,255,255,.14);
  font-size:13px; color:#9FB4D6;
}

/* ---------- 响应式 ---------- */
@media (min-width:1024px){
  body{ padding-left:var(--nav-w); }
  .dock-bar{ left:var(--nav-w); }
  .article-wrap{ grid-template-columns:minmax(0,760px) 320px; justify-content:center; }
}
@media (max-width:1023px){
  .topbar{ display:flex; }
  body{ padding-top:56px; }
  .side-nav{ transform:translateX(-100%); transition:transform .25s ease; z-index:90; box-shadow:var(--sh3); }
  .side-nav.is-open{ transform:translateX(0); }
  .footer-grid{ grid-template-columns:1fr 1fr; gap:32px; }
  .related-grid{ grid-template-columns:repeat(2,minmax(0,1fr)); }
}
@media (max-width:1023px){
  .container{ padding:0 24px; }
}
@media (max-width:767px){
  .article-head{ padding:24px 20px; }
  .article-card{ padding:22px 18px; }
  .article-title{ font-size:27px; }
  .prose{ font-size:16.5px; }
  .prose h2{ font-size:21px; margin-top:34px; }
  .related-grid{ grid-template-columns:1fr; }
  .footer{ padding:48px 0 26px; margin-top:64px; }
}
@media (max-width:640px){
  .container{ padding:0 16px; }
  .dock-bar{ height:60px; padding:0 14px; }
  .dock-text{ display:none; }
  .dock-bar .btn{ width:100%; }
  .footer-grid{ grid-template-columns:1fr; gap:28px; }
  .article-title{ font-size:24px; }
}

/* roulang page: category2 */
:root{
    --brand:#1257C9;
    --brand-deep:#0C3F97;
    --brand-soft:#EEF4FF;
    --accent:#FF6A1A;
    --accent-soft:#FFF2E9;
    --mint:#0FBFA8;
    --mint-soft:#E7FAF7;
    --amber:#F0B429;
    --amber-soft:#FFF6E2;
    --danger:#E5484D;
    --bg:#F5F7FB;
    --surface:#FFFFFF;
    --line:#E3E9F4;
    --text:#0F1E33;
    --text2:#5A6B85;
    --text3:#93A2B8;
    --radius-card:14px;
    --radius-btn:10px;
    --radius-img:12px;
    --sh1:0 1px 2px rgba(15,30,51,.05);
    --sh2:0 10px 28px -14px rgba(15,30,51,.22);
    --sh3:0 16px 36px -16px rgba(18,87,201,.28);
    --sidebar-w:264px;
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;}
  body{
    margin:0;
    background:var(--bg);
    color:var(--text);
    font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
    font-size:16px;
    line-height:1.85;
    padding-bottom:84px;
  }
  img{max-width:100%;display:block;}
  a{color:var(--brand);text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease,box-shadow .2s ease,transform .2s ease;}
  a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible,textarea:focus-visible{
    outline:3px solid rgba(18,87,201,.35);
    outline-offset:2px;
    border-radius:8px;
  }
  h1,h2,h3,h4{margin:0;color:var(--text);letter-spacing:-.01em;}
  h1{font-size:38px;font-weight:800;line-height:1.25;}
  h2{font-size:26px;font-weight:700;line-height:1.3;}
  h3{font-size:19px;font-weight:700;line-height:1.45;}
  h4{font-size:16px;font-weight:600;line-height:1.5;}
  p{margin:0 0 1.1em;}
  p:last-child{margin-bottom:0;}
  ul,ol{margin:0;padding:0;list-style:none;}
  button{font:inherit;cursor:pointer;border:0;background:none;color:inherit;}
  :disabled,.is-disabled{opacity:.4;cursor:not-allowed;pointer-events:none;}

  .container{max-width:1240px;margin:0 auto;padding:0 40px;}

  /* ============ 侧边导航 ============ */
  .sidebar{
    position:fixed;left:0;top:0;bottom:0;width:var(--sidebar-w);
    background:var(--surface);
    border-right:1px solid var(--line);
    box-shadow:0 0 0 rgba(15,30,51,0);
    display:flex;flex-direction:column;
    padding:24px 18px 20px;
    z-index:60;
    overflow-y:auto;
  }
  .brand{display:flex;align-items:center;gap:12px;padding:4px 6px 20px;border-bottom:1px solid var(--line);}
  .brand-mark{
    width:40px;height:40px;display:grid;place-items:center;flex:0 0 40px;
    background:var(--brand-deep);color:#fff;font-weight:800;font-size:19px;
    border-radius:12px;box-shadow:var(--sh2);letter-spacing:0;
  }
  .brand-text{display:flex;flex-direction:column;line-height:1.25;}
  .brand-text b{font-size:15px;font-weight:800;color:var(--brand-deep);}
  .brand-text i{font-style:normal;font-size:12px;color:var(--text3);letter-spacing:.06em;}
  .nav-label{display:block;font-size:12px;color:var(--text3);letter-spacing:.14em;padding:18px 8px 8px;}
  .nav-group{display:flex;flex-direction:column;gap:4px;}
  .nav-item{
    position:relative;display:flex;align-items:center;gap:10px;
    height:44px;padding:0 12px;border-radius:10px;
    font-size:15px;color:var(--text2);
  }
  .nav-item svg{width:20px;height:20px;flex:0 0 20px;color:var(--text3);transition:color .2s ease;}
  .nav-item:hover{background:var(--brand-soft);color:var(--brand-deep);}
  .nav-item:hover svg{color:var(--accent);}
  .nav-item:focus-visible{background:var(--brand-soft);}
  .nav-item:active{background:#E2EBFF;}
  .nav-item.is-active{
    background:var(--brand-soft);color:var(--brand-deep);font-weight:700;
  }
  .nav-item.is-active::before{
    content:"";position:absolute;left:-18px;top:50%;transform:translateY(-50%);
    width:3px;height:24px;border-radius:0 3px 3px 0;background:var(--accent);
  }
  .nav-item.is-active svg{color:var(--accent);}
  .sidebar-cta{width:100%;margin-top:20px;justify-content:center;}
  .sidebar-foot{margin-top:auto;padding-top:20px;border-top:1px solid var(--line);font-size:12px;color:var(--text3);line-height:1.8;}
  .sidebar-foot p{margin:0;}

  /* ============ 移动端顶栏 ============ */
  .mobile-bar{
    display:none;position:fixed;top:0;left:0;right:0;height:56px;
    background:rgba(255,255,255,.96);backdrop-filter:blur(6px);
    border-bottom:1px solid var(--line);z-index:80;
    align-items:center;justify-content:space-between;padding:0 14px;gap:10px;
  }
  .mobile-bar .brand-mini{display:flex;align-items:center;gap:8px;font-weight:800;color:var(--brand-deep);font-size:15px;}
  .mobile-bar .brand-mini .brand-mark{width:30px;height:30px;flex:0 0 30px;font-size:15px;border-radius:9px;box-shadow:none;}
  .icon-btn{
    width:40px;height:40px;display:grid;place-items:center;border-radius:10px;
    color:var(--brand-deep);
  }
  .icon-btn:hover{background:var(--brand-soft);}
  .icon-btn:active{background:#E2EBFF;}
  .icon-btn svg{width:22px;height:22px;}
  .drawer{
    position:fixed;top:0;left:0;bottom:0;width:280px;background:var(--surface);
    z-index:100;transform:translateX(-102%);transition:transform .28s ease;
    padding:20px 16px;overflow-y:auto;box-shadow:var(--sh2);
  }
  .drawer.is-open{transform:translateX(0);}
  .drawer-mask{
    position:fixed;inset:0;background:rgba(15,30,51,.45);z-index:90;opacity:0;visibility:hidden;
    transition:opacity .25s ease,visibility .25s ease;
  }
  .drawer-mask.is-open{opacity:1;visibility:visible;}

  /* ============ 主区域 ============ */
  .page{margin-left:var(--sidebar-w);}

  /* 面包屑 */
  .breadcrumb{
    display:flex;align-items:center;gap:8px;flex-wrap:wrap;
    font-size:13px;color:var(--text3);padding:28px 0 18px;
  }
  .breadcrumb a{color:var(--text3);}
  .breadcrumb a:hover{color:var(--brand);}
  .breadcrumb .crumb-current{color:var(--text2);}

  /* Hero 左右分栏 */
  .hero{padding:8px 0 56px;}
  .hero-grid{
    display:grid;grid-template-columns:1.12fr .88fr;gap:48px;align-items:center;
  }
  .hero h1{margin-bottom:16px;}
  .hero h1 .hl{color:var(--brand);}
  .hero-sub{font-size:17px;color:var(--text2);max-width:560px;margin-bottom:24px;}
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:28px;}
  .hero-facts{display:flex;gap:28px;flex-wrap:wrap;padding-top:22px;border-top:1px solid var(--line);}
  .hero-facts div{min-width:96px;}
  .hero-facts b{display:block;font-family:"Inter",ui-sans-serif,sans-serif;font-variant-numeric:tabular-nums;font-size:26px;font-weight:800;color:var(--brand-deep);line-height:1.2;}
  .hero-facts span{font-size:12px;color:var(--text3);}
  .hero-figure{position:relative;border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--sh2);background:#EEF2F8;}
  .hero-figure img{width:100%;height:400px;object-fit:cover;}
  .hero-figure figcaption{
    position:absolute;left:16px;bottom:16px;right:16px;
    background:rgba(255,255,255,.92);border-radius:10px;padding:12px 16px;
    font-size:13px;color:var(--text2);line-height:1.6;
  }

  /* 锚点 chips */
  .chip-bar{
    display:flex;gap:10px;flex-wrap:wrap;padding:18px 0 0;
    border-top:1px solid var(--line);
  }
  .chip{
    display:inline-flex;align-items:center;gap:6px;
    font-size:13px;padding:7px 14px;border-radius:999px;
    background:var(--surface);border:1px solid var(--line);color:var(--text2);
  }
  .chip:hover{border-color:rgba(18,87,201,.4);background:var(--brand-soft);color:var(--brand-deep);}
  .chip:active{background:#E2EBFF;}
  .chip::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);}

  /* 板块 */
  .section{padding:72px 0;}
  .section.tight{padding:56px 0;}
  .section-head{margin-bottom:34px;max-width:760px;}
  .section-head h2{position:relative;padding-left:16px;margin-bottom:12px;}
  .section-head h2::before{
    content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:3px;background:var(--brand);
  }
  .section-head p{color:var(--text2);font-size:15px;}

  /* 按钮 */
  .btn{
    display:inline-flex;align-items:center;gap:8px;justify-content:center;
    height:46px;padding:0 22px;border-radius:var(--radius-btn);
    font-size:15px;font-weight:600;border:1px solid transparent;white-space:nowrap;
  }
  .btn-primary{background:var(--accent);color:#fff;box-shadow:var(--sh1);}
  .btn-primary:hover{background:#EF5E0D;transform:translateY(-2px);box-shadow:var(--sh3);color:#fff;}
  .btn-primary:active{transform:translateY(0);background:#DC550B;}
  .btn-secondary{background:var(--surface);color:var(--brand);border-color:rgba(18,87,201,.45);}
  .btn-secondary:hover{background:var(--brand-soft);transform:translateY(-2px);color:var(--brand-deep);}
  .btn-secondary:active{transform:translateY(0);background:#E2EBFF;}
  .btn-sm{height:38px;padding:0 16px;font-size:14px;}
  .btn-ghost{background:transparent;color:var(--brand);padding:0 4px;height:auto;}
  .btn-ghost:hover{color:var(--brand-deep);}
  .link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand);}
  .link-arrow span.arrow{display:inline-block;transition:transform .2s ease;}
  .link-arrow:hover .arrow{transform:translateX(4px);}
  .link-arrow:hover{color:var(--brand-deep);}

  /* 提示条 */
  .tip{
    display:flex;gap:10px;font-size:14px;line-height:1.7;
    padding:12px 16px;border-left:3px solid var(--brand);border-radius:0 10px 10px 0;
    background:var(--brand-soft);color:var(--text2);
  }
  .tip.success{border-left-color:var(--mint);background:var(--mint-soft);}
  .tip.warn{border-left-color:var(--amber);background:var(--amber-soft);}
  .tip b{color:var(--text);}

  .badge{
    display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;
    padding:4px 10px;border-radius:999px;background:var(--brand-soft);color:var(--brand);
  }
  .badge.mint{background:var(--mint-soft);color:#0A8D7C;}
  .badge.amber{background:var(--amber-soft);color:#9A6D06;}

  /* 对照双卡 */
  .compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
  .compare-card{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
    box-shadow:var(--sh1);padding:28px;transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
  }
  .compare-card:hover{transform:translateY(-4px);box-shadow:var(--sh2);border-color:rgba(18,87,201,.3);}
  .compare-card.good{border-top:4px solid var(--mint);}
  .compare-card.risk{border-top:4px solid var(--amber);}
  .compare-head{display:flex;align-items:center;gap:10px;margin-bottom:20px;}
  .compare-icon{
    width:44px;height:44px;flex:0 0 44px;border-radius:12px;display:grid;place-items:center;
  }
  .compare-icon.good{background:var(--mint-soft);color:#0A8D7C;}
  .compare-icon.risk{background:var(--amber-soft);color:#9A6D06;}
  .compare-icon svg{width:22px;height:22px;}
  .compare-list li{
    display:flex;gap:12px;padding:12px 0;border-bottom:1px dashed var(--line);
    font-size:15px;color:var(--text2);
  }
  .compare-list li:last-child{border-bottom:0;}
  .compare-list li b{color:var(--text);font-weight:600;}
  .dot{width:20px;height:20px;flex:0 0 20px;border-radius:50%;display:grid;place-items:center;margin-top:4px;}
  .dot.ok{background:var(--mint-soft);color:#0A8D7C;}
  .dot.no{background:var(--amber-soft);color:#9A6D06;}
  .dot svg{width:12px;height:12px;}

  /* 60/40 图文块 */
  .split{display:grid;gap:40px;align-items:center;margin-top:44px;}
  .split.a{grid-template-columns:1.5fr 1fr;}
  .split.b{grid-template-columns:1fr 1.5fr;}
  .split-media{border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--sh2);background:#EEF2F8;}
  .split-media img{width:100%;height:300px;object-fit:cover;transition:transform .4s ease;}
  .split-media:hover img{transform:scale(1.04);}
  .check-list li{display:flex;gap:10px;font-size:15px;color:var(--text2);padding:6px 0;}
  .check-list li svg{width:18px;height:18px;flex:0 0 18px;color:var(--mint);margin-top:5px;}
  .step-list{counter-reset:s;margin-top:14px;}
  .step-list li{
    display:flex;gap:12px;padding:10px 0;font-size:15px;color:var(--text2);
  }
  .step-list li::before{
    counter-increment:s;content:counter(s);
    flex:0 0 26px;width:26px;height:26px;border-radius:8px;margin-top:3px;
    background:var(--accent-soft);color:var(--accent);font-weight:700;font-size:13px;
    display:grid;place-items:center;font-family:"Inter",ui-sans-serif,sans-serif;
  }

  /* 提示条带 */
  .tip-band{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:40px;}
  .tip-band .tip{align-items:flex-start;height:100%;}

  /* FAQ */
  .faq-wrap{max-width:860px;margin:0 auto;}
  .faq-item{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
    margin-bottom:14px;box-shadow:var(--sh1);overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
  }
  .faq-item:hover{border-color:rgba(18,87,201,.3);box-shadow:var(--sh2);}
  .faq-item summary{
    list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:20px 24px;font-size:16px;font-weight:700;color:var(--text);
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary::after{
    content:"";flex:0 0 10px;width:10px;height:10px;margin-right:4px;
    border-right:2px solid var(--accent);border-bottom:2px solid var(--accent);
    transform:rotate(45deg);transition:transform .25s ease;
  }
  .faq-item[open] summary::after{transform:rotate(-135deg);}
  .faq-item[open] summary{color:var(--brand-deep);}
  .faq-body{padding:0 24px 22px;font-size:15px;line-height:1.8;color:var(--text2);}

  /* CTA 大卡 */
  .cta-card{
    background:var(--brand-soft);border-radius:20px;padding:40px 44px;
    display:flex;align-items:center;justify-content:space-between;gap:28px;
    border:1px solid rgba(18,87,201,.16);
  }
  .cta-card h2{font-size:24px;margin-bottom:8px;padding-left:0;}
  .cta-card p{color:var(--text2);font-size:15px;margin:0;}
  .cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

  /* 页脚 */
  .footer{background:var(--brand-deep);color:#D6E2F7;padding:64px 0 28px;margin-top:24px;}
  .footer-grid{
    display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:36px;
    padding-bottom:36px;border-bottom:1px solid rgba(214,226,247,.18);
  }
  .footer h3{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px;}
  .footer p{font-size:14px;color:#D6E2F7;line-height:1.9;}
  .footer a{display:block;font-size:14px;color:#9FB4D6;padding:5px 0;}
  .footer a:hover{color:#fff;}
  .footer a:active{color:#D6E2F7;}
  .footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
  .footer-brand .brand-mark{background:#fff;color:var(--brand-deep);box-shadow:none;width:34px;height:34px;flex:0 0 34px;font-size:16px;}
  .footer-brand b{color:#fff;font-size:15px;font-weight:800;}
  .footer-bottom{
    display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
    padding-top:22px;font-size:13px;color:#9FB4D6;
  }

  /* 底部固定转化条 */
  .sticky-bar{
    position:fixed;left:var(--sidebar-w);right:0;bottom:0;height:64px;z-index:70;
    background:rgba(255,255,255,.92);backdrop-filter:blur(8px);
    border-top:1px solid var(--line);box-shadow:0 -10px 28px -18px rgba(15,30,51,.35);
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:0 40px;
  }
  .sticky-bar p{margin:0;font-size:14px;color:var(--text2);display:flex;align-items:center;gap:8px;}
  .sticky-bar .live{width:8px;height:8px;border-radius:50%;background:var(--mint);box-shadow:0 0 0 4px rgba(15,191,168,.16);}

  /* ============ 响应式 ============ */
  @media (max-width:1180px){
    .hero h1{font-size:34px;}
    .compare-grid{gap:18px;}
  }
  @media (max-width:1023px){
    .sidebar{display:none;}
    .page{margin-left:0;padding-top:56px;}
    .mobile-bar{display:flex;}
    .sticky-bar{left:0;padding:0 20px;}
    .container{padding:0 24px;}
    .hero-grid{grid-template-columns:1fr;gap:28px;}
    .hero h1{font-size:30px;}
    .hero-figure img{height:300px;}
    .compare-grid{grid-template-columns:1fr;}
    .split.a,.split.b{grid-template-columns:1fr;gap:22px;}
    .split-media img{height:240px;}
    .tip-band{grid-template-columns:1fr;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
    .cta-card{flex-direction:column;align-items:flex-start;}
    .section{padding:56px 0;}
  }
  @media (max-width:640px){
    body{font-size:15px;padding-bottom:76px;}
    .container{padding:0 16px;}
    h1{font-size:26px;}
    .hero h1{font-size:26px;}
    h2{font-size:22px;}
    .hero-facts{gap:18px;}
    .hero-facts b{font-size:22px;}
    .hero-figure img{height:220px;}
    .hero-figure figcaption{position:static;border-radius:0;background:var(--surface);}
    .compare-card{padding:20px;}
    .btn{height:44px;padding:0 18px;font-size:14px;}
    .sticky-bar{height:60px;padding:0 14px;gap:10px;}
    .sticky-bar p{font-size:12px;line-height:1.4;}
    .sticky-bar p .long{display:none;}
    .section{padding:44px 0;}
    .cta-card{padding:26px 22px;}
    .footer{padding:48px 0 22px;}
    .footer-grid{grid-template-columns:1fr;}
    .footer-bottom{flex-direction:column;gap:6px;}
    .faq-item summary{padding:16px 18px;font-size:15px;}
    .faq-body{padding:0 18px 18px;}
  }

/* roulang page: category3 */
:root{
    --brand:#1257C9; --brand-deep:#0C3F97; --brand-soft:#EEF4FF;
    --accent:#FF6A1A; --accent-soft:#FFF2E9; --accent-deep:#ef5d0c;
    --mint:#0FBFA8; --amber:#F0B429; --danger:#E5484D;
    --bg:#F5F7FB; --surface:#FFFFFF; --line:#E3E9F4;
    --ink:#0F1E33; --ink2:#5A6B85; --ink3:#93A2B8;
    --r-card:14px; --r-btn:10px; --r-img:12px; --r-big:20px;
    --sh1:0 1px 2px rgba(15,30,51,.05);
    --sh2:0 10px 28px -14px rgba(15,30,51,.22);
    --sh3:0 16px 36px -16px rgba(18,87,201,.28);
    --side-w:264px;
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;}
  body{
    margin:0;
    font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
    font-size:16px; line-height:1.85; color:var(--ink);
    background:var(--bg);
    padding-bottom:84px;
    -webkit-font-smoothing:antialiased;
  }
  h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
  ul,ol{padding:0; list-style:none;}
  img{max-width:100%; display:block; object-fit:cover; background:#EEF2F8;}
  a{color:var(--brand); text-decoration:none; transition:color .18s ease;}
  a:hover{color:var(--brand-deep);}
  button{font-family:inherit;}
  :focus-visible{outline:3px solid rgba(18,87,201,.35); outline-offset:2px;}
  .num{font-family:"Inter",ui-sans-serif,system-ui; font-variant-numeric:tabular-nums;}

  .container{max-width:1240px; margin:0 auto; padding:0 40px;}

  /* ============ 布局骨架 ============ */
  .app{display:flex; min-height:100vh;}
  .side{
    position:fixed; top:0; left:0; width:var(--side-w); height:100vh;
    background:var(--surface); border-right:1px solid var(--line);
    box-shadow:0 1px 2px rgba(15,30,51,.04);
    display:flex; flex-direction:column; gap:18px;
    padding:20px 16px 18px; z-index:50;
    overflow-y:auto; overflow-x:hidden;
    transition:width .22s ease;
  }
  .main-wrap{flex:1; min-width:0; margin-left:var(--side-w); transition:margin-left .22s ease;}
  .app.is-collapsed .side{width:76px;}
  .app.is-collapsed .main-wrap{margin-left:76px;}

  .brand{display:flex; align-items:center; gap:12px; padding:4px 6px 14px; border-bottom:1px solid var(--line);}
  .brand-mark{
    width:40px; height:40px; flex:none; border-radius:12px;
    background:var(--brand); color:#fff; font-weight:800; font-size:18px;
    display:flex; align-items:center; justify-content:center;
    box-shadow:0 8px 18px -10px rgba(18,87,201,.75);
  }
  .brand-text{display:flex; flex-direction:column; line-height:1.25; min-width:0;}
  .brand-text b{font-size:15px; font-weight:800; letter-spacing:-.01em; color:var(--ink); white-space:nowrap;}
  .brand-text small{font-size:12px; color:var(--ink3);}
  .side-toggle{
    margin-left:auto; width:30px; height:30px; flex:none; border-radius:8px;
    border:1px solid var(--line); background:#fff; color:var(--ink3);
    display:flex; align-items:center; justify-content:center; cursor:pointer; transition:.18s;
  }
  .side-toggle:hover{background:var(--brand-soft); color:var(--brand); border-color:rgba(18,87,201,.35);}
  .side-toggle:active{transform:scale(.94);}
  .app.is-collapsed .brand{justify-content:center;}
  .app.is-collapsed .brand-text,
  .app.is-collapsed .side-toggle,
  .app.is-collapsed .nav-label,
  .app.is-collapsed .nav-text,
  .app.is-collapsed .side-cta span,
  .app.is-collapsed .side-foot{display:none;}

  .nav-label{font-size:12px; letter-spacing:.08em; color:var(--ink3); padding:0 8px 6px; display:block;}
  .nav-group{display:flex; flex-direction:column; gap:4px;}
  .nav-item{
    position:relative; display:flex; align-items:center; gap:11px;
    height:44px; padding:0 12px; border-radius:var(--r-btn);
    font-size:15px; color:var(--ink2); transition:background .18s, color .18s;
  }
  .nav-item svg{width:20px; height:20px; flex:none;}
  .nav-item::before{
    content:""; position:absolute; left:0; top:9px; bottom:9px; width:3px;
    border-radius:0 3px 3px 0; background:transparent; transition:background .18s;
  }
  .nav-item:hover{background:var(--brand-soft); color:var(--brand-deep);}
  .nav-item:hover svg{color:var(--accent);}
  .nav-item:active{background:#E2EBFB;}
  .nav-item.is-active{background:var(--brand-soft); color:var(--brand-deep); font-weight:700;}
  .nav-item.is-active::before{background:var(--accent);}
  .nav-item.is-active svg{color:var(--brand);}
  .app.is-collapsed .nav-item{justify-content:center; padding:0;}

  .side-cta{
    display:flex; align-items:center; justify-content:center; gap:8px;
    height:44px; width:100%; border-radius:var(--r-btn);
    background:var(--accent); color:#fff; font-size:15px; font-weight:700;
    border:0; cursor:pointer; transition:.2s;
    box-shadow:0 8px 18px -12px rgba(255,106,26,.9);
  }
  .side-cta:hover{background:var(--accent-deep); transform:translateY(-2px); box-shadow:var(--sh3); color:#fff;}
  .side-cta:active{transform:translateY(0);}
  .side-cta[disabled]{opacity:.4; cursor:not-allowed; transform:none; box-shadow:none;}
  .app.is-collapsed .side-cta{padding:0;}

  .side-foot{margin-top:auto; font-size:12px; line-height:1.7; color:var(--ink3); padding:12px 8px 0; border-top:1px solid var(--line);}
  .side-foot p{margin:0 0 4px;}

  /* ============ 移动端顶栏 / 抽屉 ============ */
  .mobile-bar{
    display:none; position:fixed; top:0; left:0; right:0; height:56px; z-index:70;
    background:rgba(255,255,255,.96); border-bottom:1px solid var(--line);
    box-shadow:0 1px 2px rgba(15,30,51,.05);
    align-items:center; gap:10px; padding:0 14px; backdrop-filter:blur(6px);
  }
  .icon-btn{
    width:38px; height:38px; flex:none; border-radius:10px; border:1px solid var(--line);
    background:#fff; color:var(--ink); display:flex; align-items:center; justify-content:center;
    cursor:pointer; transition:.18s;
  }
  .icon-btn:hover{background:var(--brand-soft); color:var(--brand); border-color:rgba(18,87,201,.35);}
  .icon-btn:active{transform:scale(.94);}
  .mobile-brand{display:flex; align-items:center; gap:9px; font-weight:800; font-size:15px; color:var(--ink); white-space:nowrap;}
  .mobile-brand .brand-mark{width:32px; height:32px; border-radius:10px; font-size:15px;}
  .mobile-bar .btn-mini{margin-left:auto;}

  .drawer-mask{
    position:fixed; inset:0; background:rgba(15,30,51,.45); z-index:80;
    opacity:0; visibility:hidden; transition:opacity .22s ease, visibility .22s;
  }
  .drawer-mask.is-open{opacity:1; visibility:visible;}
  .drawer{
    position:fixed; top:0; left:0; bottom:0; width:280px; max-width:86vw; z-index:90;
    background:#fff; border-right:1px solid var(--line);
    padding:18px 16px; transform:translateX(-102%); transition:transform .26s ease;
    display:flex; flex-direction:column; gap:16px; overflow-y:auto;
  }
  .drawer.is-open{transform:translateX(0);}
  .drawer .nav-item{font-size:15px;}

  /* ============ 按钮 / 徽章 / 链接 ============ */
  .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:600; border:1px solid transparent;
    cursor:pointer; transition:background .2s, transform .2s, box-shadow .2s, color .2s, border-color .2s;
    white-space:nowrap;
  }
  .btn-primary{background:var(--accent); color:#fff; box-shadow:0 10px 22px -12px rgba(255,106,26,.95);}
  .btn-primary:hover{background:var(--accent-deep); color:#fff; transform:translateY(-2px); box-shadow:var(--sh3);}
  .btn-primary:active{background:#d9540a; transform:translateY(0);}
  .btn-primary[disabled]{opacity:.4; cursor:not-allowed; transform:none; box-shadow:none;}
  .btn-ghost{background:#fff; color:var(--brand); border-color:rgba(18,87,201,.4);}
  .btn-ghost:hover{background:var(--brand-soft); color:var(--brand-deep); transform:translateY(-2px); box-shadow:var(--sh2);}
  .btn-ghost:active{background:#E2EBFB; transform:translateY(0);}
  .btn-ghost[disabled]{opacity:.4; cursor:not-allowed; transform:none; box-shadow:none;}
  .btn-sm{height:38px; padding:0 16px; font-size:14px;}
  .btn-mini{height:34px; padding:0 13px; font-size:13px; border-radius:9px;}

  .link-arrow{display:inline-flex; align-items:center; gap:6px; font-size:14px; font-weight:600; color:var(--brand);}
  .link-arrow svg{width:16px; height:16px; transition:transform .2s;}
  .link-arrow:hover{color:var(--brand-deep);}
  .link-arrow:hover svg{transform:translateX(4px);}
  .link-arrow:active{color:var(--accent);}

  .badge{
    display:inline-flex; align-items:center; gap:6px;
    font-size:12px; padding:4px 10px; border-radius:999px;
    background:var(--brand-soft); color:var(--brand); font-weight:600;
  }
  .badge-mint{background:rgba(15,191,168,.12); color:#0A8E7E;}
  .badge-amber{background:rgba(240,180,41,.16); color:#9A6B06;}
  .badge-accent{background:var(--accent-soft); color:#C64A05;}

  .card{
    background:var(--surface); border:1px solid var(--line); border-radius:var(--r-card);
    box-shadow:var(--sh1); transition:transform .22s ease, box-shadow .22s ease, border-color .22s ease;
  }
  .card:hover{transform:translateY(-4px); box-shadow:var(--sh2); border-color:rgba(18,87,201,.3);}
  .thumb{overflow:hidden; border-radius:var(--r-img); background:#EEF2F8;}
  .thumb img{width:100%; height:100%; transition:transform .35s ease;}
  .card:hover .thumb img, .thumb:hover img{transform:scale(1.04);}

  .dot-bg{
    background-image:radial-gradient(rgba(18,87,201,.14) 1px, transparent 1px);
    background-size:16px 16px;
  }

  /* ============ 面包屑 ============ */
  .crumb{
    display:flex; flex-wrap:wrap; align-items:center; gap:8px;
    font-size:13px; color:var(--ink3); padding:22px 0 8px;
  }
  .crumb a{color:var(--ink3);}
  .crumb a:hover{color:var(--brand);}
  .crumb .sep{color:#C6D1E2;}
  .crumb-current{color:var(--ink2);}

  /* ============ 区块 ============ */
  .sec{padding:56px 0 0;}
  .sec-lg{padding:72px 0 0;}
  .sec-head{display:flex; align-items:flex-end; justify-content:space-between; gap:20px; margin-bottom:26px;}
  h1{
    font-size:38px; font-weight:800; line-height:1.25; letter-spacing:-.01em;
    color:var(--ink); margin:0 0 16px;
  }
  h2{
    position:relative; font-size:26px; font-weight:700; line-height:1.3; color:var(--ink);
    padding-left:14px; margin:0;
  }
  h2::before{
    content:""; position:absolute; left:0; top:5px; bottom:5px; width:4px; border-radius:3px;
    background:var(--brand);
  }
  h3{font-size:19px; font-weight:700; color:var(--ink); line-height:1.45;}
  h4{font-size:16px; font-weight:600; color:var(--ink);}
  .sec-sub{font-size:14px; color:var(--ink2); margin-top:10px; max-width:760px;}
  .lead{font-size:16px; line-height:1.85; color:var(--ink2); max-width:840px;}

  /* ============ 首屏 ============ */
  .hero{padding:18px 0 0;}
  .hero-top{display:flex; flex-wrap:wrap; gap:12px; align-items:center; margin-bottom:14px;}
  .hero h1{max-width:900px;}
  .data-bar{
    margin-top:30px; background:var(--brand); border-radius:18px;
    padding:30px 32px; display:grid; grid-template-columns:repeat(4,1fr); gap:26px;
    box-shadow:0 22px 44px -28px rgba(18,87,201,.85); position:relative; overflow:hidden;
  }
  .data-bar::after{
    content:""; position:absolute; right:-60px; top:-70px; width:240px; height:240px;
    border-radius:50%; background:rgba(255,255,255,.07);
  }
  .data-cell{position:relative; z-index:1;}
  .data-cell .no{
    font-family:"Inter",ui-sans-serif; font-size:13px; font-weight:700; letter-spacing:.12em;
    color:#FFB98C; display:block; margin-bottom:8px;
  }
  .data-cell b{display:block; font-size:17px; font-weight:700; color:#fff; margin-bottom:6px;}
  .data-cell p{font-size:13.5px; line-height:1.7; color:#D6E2F7; margin:0;}
  .data-divider{position:absolute; left:0; top:0; bottom:0; width:1px; background:rgba(255,255,255,.16);}

  /* ============ 锚点 chip ============ */
  .chips{display:flex; flex-wrap:wrap; gap:10px; margin-top:26px;}
  .chip{
    display:inline-flex; align-items:center; gap:7px; height:38px; padding:0 15px;
    border-radius:999px; background:#fff; border:1px solid var(--line);
    font-size:14px; color:var(--ink2); transition:.2s;
  }
  .chip:hover{background:var(--brand-soft); border-color:rgba(18,87,201,.35); color:var(--brand-deep); transform:translateY(-2px);} 
  .chip:active{transform:translateY(0); background:#E2EBFB;}
  .chip span.dot{width:6px; height:6px; border-radius:50%; background:var(--accent);}

  /* ============ 功能卡 2×2 ============ */
  .feat-grid{display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:22px;}
  .feat-card{padding:28px 26px 24px; display:flex; flex-direction:column;}
  .feat-icon{
    width:48px; height:48px; border-radius:14px; flex:none;
    background:var(--accent-soft); color:var(--accent);
    display:flex; align-items:center; justify-content:center; margin-bottom:16px;
  }
  .feat-icon svg{width:24px; height:24px;}
  .feat-card p.desc{font-size:14.5px; color:var(--ink2); margin:10px 0 14px;}
  .check-list{display:flex; flex-direction:column; gap:9px; margin-bottom:18px;}
  .check-list li{display:flex; gap:9px; align-items:flex-start; font-size:14px; color:var(--ink2); line-height:1.7;}
  .check-list svg{width:17px; height:17px; flex:none; margin-top:4px; color:var(--mint);}
  .feat-card .link-arrow{margin-top:auto;}

  /* ============ 路径图 ============ */
  .path-sec{position:relative;}
  .path-wrap{
    position:relative; border-radius:var(--r-big); overflow:hidden;
    background:#fff; border:1px solid var(--line); box-shadow:var(--sh1); padding:40px 36px;
  }
  .path-wrap::before{
    content:""; position:absolute; inset:0;
    background-image:url('/assets/images/backpic/back-2.webp');
    background-size:cover; background-position:center;
    opacity:.10; filter:saturate(.7);
  }
  .path-inner{position:relative; z-index:1;}
  .path-track{display:grid; grid-template-columns:repeat(4,1fr); gap:18px; margin-top:28px; position:relative;}
  .path-track::before{
    content:""; position:absolute; left:6%; right:6%; top:26px; height:2px;
    background:repeating-linear-gradient(90deg, rgba(18,87,201,.32) 0 8px, transparent 8px 16px);
  }
  .path-node{position:relative; z-index:1; text-align:center; padding:0 6px;}
  .path-dot{
    width:52px; height:52px; margin:0 auto 14px; border-radius:16px;
    background:var(--brand-soft); color:var(--brand-deep);
    display:flex; align-items:center; justify-content:center;
    font-family:"Inter",ui-sans-serif; font-weight:800; font-size:17px;
    border:1px solid rgba(18,87,201,.22); box-shadow:0 8px 18px -12px rgba(18,87,201,.7);
  }
  .path-node b{display:block; font-size:15px; font-weight:700; color:var(--ink); margin-bottom:6px;}
  .path-node p{font-size:13.5px; color:var(--ink2); line-height:1.7; margin:0;}

  /* ============ 深色 HUD 面板 ============ */
  .hud{
    background:var(--brand-deep); border-radius:var(--r-big); padding:36px 36px 30px;
    box-shadow:0 26px 50px -32px rgba(12,63,151,.95); color:#D6E2F7;
  }
  .hud h2{color:#fff;}
  .hud h2::before{background:var(--accent);}
  .hud .hud-sub{font-size:14.5px; color:#9FB4D6; margin-top:10px; max-width:720px;}
  .hud-rows{margin-top:24px; border-top:1px solid rgba(255,255,255,.14);}
  .hud-row{
    display:grid; grid-template-columns:180px 1fr auto; gap:18px; align-items:center;
    padding:16px 6px; border-bottom:1px solid rgba(255,255,255,.12);
    transition:background .18s;
  }
  .hud-row:hover{background:rgba(255,255,255,.06);}
  .hud-row .key{font-size:14.5px; font-weight:700; color:#fff;}
  .hud-row .val{font-size:14px; line-height:1.75; color:#C6D7F0; margin:0;}
  .hud-row .tag{
    font-size:12px; padding:4px 10px; border-radius:999px;
    background:rgba(255,255,255,.12); color:#EAF1FD; white-space:nowrap;
  }
  .hud-row .tag.is-mint{background:rgba(15,191,168,.22); color:#8DF0E2;}
  .hud-foot{display:flex; flex-wrap:wrap; gap:14px; align-items:center; margin-top:24px;}
  .hud-foot p{font-size:13.5px; color:#9FB4D6; margin:0;}
  .btn-on-dark{
    display:inline-flex; align-items:center; gap:8px; height:42px; padding:0 18px;
    border-radius:var(--r-btn); background:#fff; color:var(--brand-deep);
    font-size:14px; font-weight:700; border:1px solid transparent; transition:.2s;
  }
  .btn-on-dark svg{width:16px; height:16px; transition:transform .2s;}
  .btn-on-dark:hover{background:var(--brand-soft); transform:translateY(-2px); color:var(--brand-deep);}
  .btn-on-dark:hover svg{transform:translateX(4px);}
  .btn-on-dark:active{transform:translateY(0); background:#E2EBFB;}

  /* ============ 场景选择 ============ */
  .scene-grid{display:grid; grid-template-columns:5fr 7fr; gap:24px; align-items:stretch;}
  .scene-figure{position:relative; border-radius:var(--r-card); overflow:hidden; border:1px solid var(--line); min-height:320px; box-shadow:var(--sh1);}
  .scene-figure img{width:100%; height:100%; object-fit:cover; transition:transform .4s ease;}
  .scene-figure:hover img{transform:scale(1.04);}
  .scene-figure figcaption{
    position:absolute; left:16px; bottom:16px; right:16px;
    background:rgba(255,255,255,.92); border-radius:12px; padding:12px 14px;
    font-size:13px; color:var(--ink2); line-height:1.65;
  }
  .theme-list{display:flex; flex-direction:column; gap:14px;}
  .theme-card{display:flex; gap:16px; align-items:flex-start; padding:20px 22px; cursor:pointer;}
  .theme-card .idx{
    font-family:"Inter",ui-sans-serif; font-size:13px; font-weight:800; letter-spacing:.1em;
    color:var(--accent); background:var(--accent-soft); padding:5px 10px; border-radius:999px; flex:none;
  }
  .theme-card p{font-size:14px; color:var(--ink2); margin:7px 0 0;}

  /* ============ 提示条 ============ */
  .tip{
    display:flex; gap:10px; align-items:flex-start; padding:14px 16px;
    border-radius:12px; font-size:14px; line-height:1.75; border-left:3px solid var(--brand);
    background:var(--brand-soft); color:#1B3E77;
  }
  .tip.tip-mint{background:rgba(15,191,168,.1); border-left-color:var(--mint); color:#0A6E63;}
  .tip.tip-warn{background:var(--accent-soft); border-left-color:var(--amber); color:#8A5B08;}
  .tip svg{width:18px; height:18px; flex:none; margin-top:4px;}

  /* ============ FAQ ============ */
  .faq-wrap{max-width:860px; margin:0 auto;}
  .faq-list{display:flex; flex-direction:column; gap:12px; margin-top:26px;}
  .faq-item{background:#fff; border:1px solid var(--line); border-radius:var(--r-card); box-shadow:var(--sh1); overflow:hidden; transition:border-color .2s, box-shadow .2s;}
  .faq-item:hover{border-color:rgba(18,87,201,.3);}
  .faq-item.is-open{border-color:rgba(18,87,201,.4); box-shadow:var(--sh2);}
  .faq-q{
    width:100%; display:flex; align-items:center; justify-content:space-between; gap:16px;
    padding:19px 22px; background:none; border:0; cursor:pointer; text-align:left;
    font-size:16px; font-weight:700; color:var(--ink); transition:background .18s;
  }
  .faq-q:hover{background:#F8FAFD;}
  .faq-q:active{background:var(--brand-soft);}
  .faq-q svg{width:20px; height:20px; flex:none; color:var(--accent); transition:transform .28s ease;}
  .faq-item.is-open .faq-q svg{transform:rotate(180deg);}
  .faq-a{max-height:0; overflow:hidden; transition:max-height .3s ease;}
  .faq-item.is-open .faq-a{max-height:440px;}
  .faq-a p{padding:0 22px 22px; font-size:15px; line-height:1.8; color:var(--ink2); margin:0;}

  /* ============ 底部 CTA ============ */
  .cta-card{
    margin-top:64px; background:var(--brand-soft); border:1px solid rgba(18,87,201,.16);
    border-radius:var(--r-big); padding:38px 36px;
    display:flex; align-items:center; justify-content:space-between; gap:26px; flex-wrap:wrap;
  }
  .cta-card h2{font-size:24px;}
  .cta-card p{font-size:15px; color:var(--ink2); margin-top:10px; max-width:640px;}
  .cta-actions{display:flex; gap:12px; flex-wrap:wrap;}

  /* ============ 页脚 ============ */
  .footer{background:var(--brand-deep); color:#D6E2F7; margin-top:80px; padding:56px 0 0; border:0;}
  .footer-grid{display:grid; grid-template-columns:1.4fr 1fr 1fr 1.2fr; gap:36px;}
  .footer h3{font-size:15px; font-weight:700; color:#fff; margin:0 0 14px; position:static; padding:0;}
  .footer h3::before{display:none;}
  .footer p{font-size:13.5px; line-height:1.85; color:#9FB4D6; margin:0 0 8px;}
  .footer a{display:block; font-size:14px; color:#D6E2F7; padding:5px 0; transition:color .18s, transform .18s;}
  .footer a:hover{color:#fff; transform:translateX(3px);}
  .footer a:active{color:#FFB98C;}
  .footer-brand{display:flex; align-items:center; gap:11px; margin-bottom:14px;}
  .footer-brand .brand-mark{width:36px; height:36px; border-radius:11px; font-size:16px; background:rgba(255,255,255,.14); box-shadow:none;}
  .footer-brand b{font-size:16px; font-weight:800; color:#fff;}
  .footer-bottom{
    margin-top:40px; border-top:1px solid rgba(255,255,255,.14);
    padding:18px 0 22px; display:flex; justify-content:space-between; gap:12px; flex-wrap:wrap;
    font-size:13px; color:#9FB4D6;
  }

  /* ============ 底部固定转化条 ============ */
  .sticky-bar{
    position:fixed; left:0; right:0; bottom:0; height:64px; z-index:75;
    background:rgba(255,255,255,.92); backdrop-filter:blur(10px);
    border-top:1px solid var(--line); box-shadow:0 -10px 28px -18px rgba(15,30,51,.28);
    display:flex; align-items:center; gap:16px; padding:0 24px;
  }
  .sticky-bar .status{display:flex; align-items:center; gap:9px; font-size:13.5px; color:var(--ink2); min-width:0;}
  .sticky-bar .status b{color:var(--ink); font-weight:700;}
  .pulse{width:8px; height:8px; border-radius:50%; background:var(--mint); box-shadow:0 0 0 4px rgba(15,191,168,.18); flex:none;}
  .sticky-bar .btn{margin-left:auto;}

  /* ============ 响应式 ============ */
  @media (max-width:1023px){
    .side{display:none;}
    .mobile-bar{display:flex;}
    .main-wrap{margin-left:0; padding-top:56px;}
    .container{padding:0 24px;}
    h1{font-size:30px;}
    h2{font-size:22px;}
    .sec{padding:44px 0 0;}
    .sec-lg{padding:56px 0 0;}
    .data-bar{grid-template-columns:repeat(2,1fr); gap:20px; padding:26px 22px;}
    .feat-grid{grid-template-columns:1fr;}
    .path-track{grid-template-columns:repeat(2,1fr); gap:22px;}
    .path-track::before{display:none;}
    .scene-grid{grid-template-columns:1fr;}
    .scene-figure{min-height:240px;}
    .hud{padding:28px 22px 24px;}
    .hud-row{grid-template-columns:1fr; gap:6px;}
    .hud-row .tag{justify-self:start;}
    .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr)); gap:28px;}
    .cta-card{padding:28px 22px;}
  }
  @media (max-width:639px){
    body{font-size:15.5px; padding-bottom:78px;}
    .container{padding:0 16px;}
    h1{font-size:27px;}
    .data-bar{grid-template-columns:1fr; gap:18px;}
    .data-cell{display:flex; gap:14px; align-items:flex-start;}
    .data-cell .no{margin:2px 0 0; flex:none;}
    .path-track{grid-template-columns:1fr;}
    .footer-grid{grid-template-columns:1fr;}
    .footer{padding-top:44px;}
    .sticky-bar{height:60px; padding:0 14px;}
    .sticky-bar .status{font-size:12.5px;}
    .sticky-bar .status .full{display:none;}
    .btn{height:44px; padding:0 18px; font-size:14.5px;}
    .cta-actions{width:100%;}
    .cta-actions .btn{flex:1;}
  }

/* roulang page: category4 */
:root{
    --brand:#1257C9;
    --brand-deep:#0C3F97;
    --brand-soft:#EEF4FF;
    --accent:#FF6A1A;
    --accent-deep:#E85B0E;
    --accent-soft:#FFF2E9;
    --mint:#0FBFA8;
    --mint-soft:#E6FAF7;
    --amber:#F0B429;
    --amber-soft:#FFF7E6;
    --danger:#E5484D;
    --bg:#F5F7FB;
    --surface:#FFFFFF;
    --line:#E3E9F4;
    --text:#0F1E33;
    --text2:#5A6B85;
    --text3:#93A2B8;
    --r-card:14px;
    --r-btn:10px;
    --r-img:12px;
    --r-pill:999px;
    --r-cta:20px;
    --sh1:0 1px 2px rgba(15,30,51,.05);
    --sh2:0 10px 28px -14px rgba(15,30,51,.22);
    --sh3:0 16px 36px -16px rgba(18,87,201,.28);
    --nav-w:264px;
    --bar-h:64px;
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;}
  body{
    margin:0;
    background:var(--bg);
    color:var(--text);
    font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
    font-size:16px;
    line-height:1.85;
    padding-bottom:84px;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;}
  a{color:var(--brand);text-decoration:none;}
  a:hover{color:var(--brand-deep);}
  button,input,select,textarea{font:inherit;color:inherit;}
  h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
  ul,ol{padding:0;list-style:none;}
  :focus-visible{outline:3px solid rgba(18,87,201,.35);outline-offset:2px;border-radius:6px;}

  .container{max-width:1240px;margin:0 auto;padding:0 40px;}
  .num{font-family:"Inter",ui-sans-serif,system-ui,sans-serif;font-variant-numeric:tabular-nums;}

  /* ---------- 左侧 App Shell ---------- */
  .side-nav{
    position:fixed;top:0;left:0;width:var(--nav-w);height:100vh;
    background:var(--surface);border-right:1px solid var(--line);
    box-shadow:0 1px 2px rgba(15,30,51,.04);
    display:flex;flex-direction:column;padding:24px 16px 20px;z-index:60;
  }
  .brand{display:flex;align-items:center;gap:10px;padding:0 8px 20px;border-bottom:1px solid var(--line);}
  .brand-mark{
    width:40px;height:40px;flex:0 0 40px;border-radius:12px;
    background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center;
    font-size:19px;font-weight:800;letter-spacing:0;
  }
  .brand-text b{display:block;font-size:15px;font-weight:800;color:var(--brand-deep);letter-spacing:-.01em;line-height:1.35;}
  .brand-text span{display:block;font-size:12px;color:var(--text3);line-height:1.5;}
  .nav-group{display:flex;flex-direction:column;gap:4px;margin-top:20px;}
  .nav-label{font-size:12px;color:var(--text3);padding:0 10px 8px;letter-spacing:.08em;}
  .nav-item{
    position:relative;display:flex;align-items:center;gap:10px;
    height:44px;padding:0 12px;border-radius:10px;
    font-size:15px;color:var(--text2);transition:background .18s ease,color .18s ease;
  }
  .nav-item svg{width:20px;height:20px;flex:0 0 20px;transition:color .18s ease;}
  .nav-item:hover{background:var(--brand-soft);color:var(--brand-deep);}
  .nav-item:hover svg{color:var(--accent);}
  .nav-item:active{background:#E2EBFF;color:var(--brand-deep);}
  .nav-item.is-active{background:var(--brand-soft);color:var(--brand-deep);font-weight:700;}
  .nav-item.is-active::before{
    content:"";position:absolute;left:-16px;top:9px;bottom:9px;width:3px;
    border-radius:0 3px 3px 0;background:var(--accent);
  }
  .side-cta{margin-top:22px;}
  .side-foot{margin-top:auto;padding-top:18px;border-top:1px solid var(--line);font-size:12px;color:var(--text3);line-height:1.8;}
  .side-foot p{margin:0;}

  /* ---------- 移动端顶栏与抽屉 ---------- */
  .topbar{
    position:fixed;top:0;left:0;right:0;height:56px;z-index:70;
    background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);
    display:flex;align-items:center;gap:12px;padding:0 14px;box-shadow:var(--sh1);
  }
  .topbar .brand-mark{width:32px;height:32px;flex:0 0 32px;border-radius:10px;font-size:15px;}
  .topbar-title{font-size:15px;font-weight:800;color:var(--brand-deep);}
  .hamburger{
    width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:#fff;
    display:flex;align-items:center;justify-content:center;cursor:pointer;transition:background .18s ease,border-color .18s ease;
  }
  .hamburger:hover{background:var(--brand-soft);border-color:rgba(18,87,201,.3);}
  .hamburger:active{background:#E2EBFF;}
  .hamburger svg{width:20px;height:20px;color:var(--brand-deep);}
  .drawer{
    position:fixed;top:0;left:0;bottom:0;width:280px;background:#fff;z-index:90;
    transform:translateX(-102%);transition:transform .28s cubic-bezier(.22,.61,.36,1);
    padding:20px 16px;overflow-y:auto;box-shadow:var(--sh2);
  }
  .drawer.is-open{transform:translateX(0);}
  .drawer-mask{
    position:fixed;inset:0;background:rgba(15,30,51,.45);z-index:80;opacity:0;pointer-events:none;
    transition:opacity .25s ease;
  }
  .drawer-mask.is-open{opacity:1;pointer-events: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:700;cursor:pointer;white-space:nowrap;
    transition:transform .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease,color .18s ease;
  }
  .btn-primary{background:var(--accent);color:#fff;box-shadow:0 6px 16px -10px rgba(255,106,26,.9);}
  .btn-primary:hover{background:var(--accent-deep);transform:translateY(-2px);box-shadow:var(--sh3);color:#fff;}
  .btn-primary:active{transform:translateY(0);background:#D24F08;box-shadow:none;}
  .btn-primary:disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none;}
  .btn-ghost{background:#fff;border-color:rgba(18,87,201,.42);color:var(--brand);}
  .btn-ghost:hover{background:var(--brand-soft);border-color:var(--brand);transform:translateY(-2px);color:var(--brand-deep);}
  .btn-ghost:active{transform:translateY(0);background:#E2EBFF;}
  .btn-ghost:disabled{opacity:.4;cursor:not-allowed;transform:none;}
  .btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:9px;}
  .btn-block{width:100%;}
  .btn-text{
    display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:700;color:var(--brand);
    background:none;border:0;padding:4px 0;cursor:pointer;transition:color .18s ease;
  }
  .btn-text svg{width:16px;height:16px;transition:transform .2s ease;}
  .btn-text:hover{color:var(--brand-deep);}
  .btn-text:hover svg{transform:translateX(4px);}
  .btn-text:active{color:var(--brand-deep);}
  .btn-text:disabled{opacity:.4;cursor:not-allowed;}

  /* ---------- 通用组件 ---------- */
  .badge{
    display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;
    padding:4px 10px;border-radius:var(--r-pill);background:var(--brand-soft);color:var(--brand);
  }
  .badge-mint{background:var(--mint-soft);color:#0A8C7B;}
  .badge-amber{background:var(--amber-soft);color:#8A6508;}
  .badge-accent{background:var(--accent-soft);color:#C24B08;}
  .chip{
    display:inline-flex;align-items:center;gap:6px;
    padding:8px 14px;border-radius:var(--r-pill);border:1px solid var(--line);background:#fff;
    font-size:13px;color:var(--text2);transition:all .18s ease;
  }
  .chip:hover{border-color:rgba(18,87,201,.4);background:var(--brand-soft);color:var(--brand-deep);transform:translateY(-2px);}
  .chip:active{transform:translateY(0);background:#E2EBFF;}
  .chip-list{display:flex;flex-wrap:wrap;gap:10px;}

  .card{
    background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh1);
    transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  }
  .card:hover{transform:translateY(-4px);border-color:rgba(18,87,201,.3);box-shadow:var(--sh2);}
  .card:active{transform:translateY(-1px);}
  .card-cover{overflow:hidden;border-radius:var(--r-card) var(--r-card) 0 0;background:#EEF2F8;aspect-ratio:16/9;}
  .card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
  .card:hover .card-cover img{transform:scale(1.04);}

  .section{padding:88px 0;}
  .section-tight{padding:64px 0;}
  .section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;flex-wrap:wrap;}
  .h2{position:relative;padding-left:16px;font-size:26px;font-weight:800;line-height:1.3;letter-spacing:-.01em;}
  .h2::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:3px;background:var(--brand);}
  .lead{color:var(--text2);font-size:16px;line-height:1.85;margin-top:12px;}

  .notice{
    display:flex;gap:10px;font-size:14px;line-height:1.7;padding:12px 16px;border-radius:10px;
    border-left:3px solid var(--brand);background:var(--brand-soft);color:var(--brand-deep);
  }
  .notice-success{border-left-color:var(--mint);background:var(--mint-soft);color:#0A7C6E;}
  .notice-warn{border-left-color:var(--amber);background:var(--amber-soft);color:#7A5A06;}

  /* ---------- 面包屑 ---------- */
  .crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text3);padding-top:28px;}
  .crumbs a{color:var(--text3);}
  .crumbs a:hover{color:var(--brand);}
  .crumbs .sep{color:#C7D2E4;}
  .crumbs .current{color:var(--text2);}

  /* ---------- Hero（帮助中心） ---------- */
  .help-hero{
    position:relative;overflow:hidden;border-bottom:1px solid var(--line);
    background:
      radial-gradient(circle at 12% 18%, rgba(18,87,201,.07) 0 2px, transparent 2px) 0 0/22px 22px,
      linear-gradient(135deg,#FFFFFF 0%,#F5F7FB 45%,#EEF4FF 100%);
  }
  .help-hero::after{
    content:"";position:absolute;right:-120px;top:-140px;width:420px;height:420px;border-radius:50%;
    background:radial-gradient(circle,rgba(255,106,26,.10) 0%,rgba(255,106,26,0) 68%);
    pointer-events:none;
  }
  .help-hero-inner{position:relative;z-index:2;text-align:center;padding:52px 0 56px;}
  .help-hero h1{font-size:38px;font-weight:800;letter-spacing:-.01em;line-height:1.25;color:var(--brand-deep);}
  .help-hero .lead{max-width:760px;margin:16px auto 0;font-size:16px;}
  .search-wrap{max-width:660px;margin:28px auto 0;}
  .search-box{
    display:flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--line);
    border-radius:var(--r-pill);padding:7px 8px 7px 18px;box-shadow:var(--sh2);
    transition:border-color .2s ease,box-shadow .2s ease;
  }
  .search-box:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(18,87,201,.16);}
  .search-box svg{width:20px;height:20px;color:var(--text3);flex:0 0 20px;}
  .search-box input{
    flex:1;border:0;outline:none;background:transparent;height:44px;font-size:15px;color:var(--text);
  }
  .search-box input::placeholder{color:var(--text3);}
  .search-tags{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;margin-top:16px;}
  .search-tags .chip{font-size:12px;padding:6px 12px;}

  /* ---------- 问题分类卡 3×2 ---------- */
  .qcat-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin-top:44px;text-align:left;}
  .qcat{
    display:block;padding:22px 20px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
    box-shadow:var(--sh1);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  }
  .qcat:hover{transform:translateY(-4px);border-color:rgba(18,87,201,.35);box-shadow:var(--sh2);}
  .qcat:active{transform:translateY(-1px);}
  .qcat .ico{
    width:42px;height:42px;border-radius:12px;background:var(--brand-soft);color:var(--brand);
    display:flex;align-items:center;justify-content:center;margin-bottom:14px;
  }
  .qcat:nth-child(2n) .ico{background:var(--accent-soft);color:var(--accent);}
  .qcat:nth-child(3n) .ico{background:var(--mint-soft);color:#0A8C7B;}
  .qcat .ico svg{width:22px;height:22px;}
  .qcat h3{font-size:17px;font-weight:700;color:var(--text);}
  .qcat p{margin-top:6px;font-size:14px;color:var(--text2);line-height:1.7;}
  .qcat .count{margin-top:12px;font-size:12px;color:var(--brand);font-weight:700;}

  /* ---------- FAQ 折叠 ---------- */
  .faq-wrap{max-width:860px;margin:0 auto;}
  .faq-item{
    background:#fff;border:1px solid var(--line);border-radius:var(--r-card);margin-bottom:12px;
    box-shadow:var(--sh1);overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
  }
  .faq-item:hover{border-color:rgba(18,87,201,.28);box-shadow:var(--sh2);}
  .faq-item[open]{border-color:rgba(18,87,201,.35);}
  .faq-item summary{
    list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:18px 22px;font-size:16px;font-weight:700;color:var(--text);
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary:hover{color:var(--brand-deep);background:#FAFBFF;}
  .faq-item summary:active{background:var(--brand-soft);}
  .faq-item summary .caret{
    width:26px;height:26px;flex:0 0 26px;border-radius:50%;background:var(--accent-soft);color:var(--accent);
    display:flex;align-items:center;justify-content:center;transition:transform .25s ease;
  }
  .faq-item summary .caret svg{width:15px;height:15px;}
  .faq-item[open] summary .caret{transform:rotate(180deg);}
  .faq-body{padding:0 22px 20px;font-size:15px;line-height:1.85;color:var(--text2);border-top:1px solid var(--line);padding-top:16px;margin-top:2px;}
  .faq-body p + p{margin-top:10px;}

  /* ---------- 图文 / 表单 ---------- */
  .split{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;}
  .split-media{overflow:hidden;border-radius:var(--r-img);background:#EEF2F8;box-shadow:var(--sh2);}
  .split-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:21/9;}
  .check-list li{display:flex;gap:10px;font-size:15px;color:var(--text2);line-height:1.75;margin-top:12px;}
  .check-list svg{width:20px;height:20px;flex:0 0 20px;color:var(--mint);margin-top:3px;}

  .form-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh2);padding:28px;}
  .form-field{margin-bottom:18px;}
  .form-field label{display:block;font-size:14px;font-weight:600;color:var(--text);margin-bottom:8px;}
  .input,.select,.textarea{
    width:100%;height:44px;border-radius:10px;border:1px solid var(--line);background:#fff;
    padding:0 14px;font-size:15px;color:var(--text);transition:border-color .18s ease,box-shadow .18s ease;
  }
  .textarea{height:auto;min-height:112px;padding:12px 14px;line-height:1.7;resize:vertical;}
  .input::placeholder,.textarea::placeholder{color:var(--text3);}
  .input:hover,.select:hover,.textarea:hover{border-color:#C9D6EC;}
  .input:focus,.select:focus,.textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft);}
  .input.is-error,.textarea.is-error{border-color:var(--danger);box-shadow:0 0 0 3px rgba(229,72,77,.12);}
  .error-text{font-size:13px;color:var(--danger);margin-top:6px;}
  .form-note{font-size:13px;color:var(--text3);line-height:1.7;margin-top:14px;}

  /* ---------- 底部 CTA ---------- */
  .cta-band{
    background:var(--brand-soft);border:1px solid rgba(18,87,201,.16);border-radius:var(--r-cta);
    padding:36px 40px;display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  }
  .cta-band h2{font-size:24px;font-weight:800;color:var(--brand-deep);line-height:1.35;letter-spacing:-.01em;}
  .cta-band p{margin-top:8px;color:var(--text2);font-size:15px;}

  /* ---------- 底部固定条 ---------- */
  .bottom-bar{
    position:fixed;left:0;right:0;bottom:0;height:var(--bar-h);z-index:65;
    background:rgba(255,255,255,.92);backdrop-filter:blur(6px);
    border-top:1px solid var(--line);box-shadow:0 -10px 28px -18px rgba(15,30,51,.3);
    display:flex;align-items:center;justify-content:space-between;gap:16px;padding:0 20px;
  }
  .bottom-bar .status{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text2);}
  .dot{width:8px;height:8px;border-radius:50%;background:var(--mint);box-shadow:0 0 0 4px rgba(15,191,168,.18);flex:0 0 8px;}

  /* ---------- 页脚 ---------- */
  .footer{background:var(--brand-deep);color:#D6E2F7;padding:64px 0 0;}
  .footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px;}
  .footer h3{font-size:15px;font-weight:700;color:#fff;margin-bottom:14px;}
  .footer p{font-size:14px;color:#9FB4D6;line-height:1.8;}
  .footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
  .footer-brand .brand-mark{background:#fff;color:var(--brand-deep);}
  .footer-brand b{font-size:16px;color:#fff;letter-spacing:-.01em;}
  .footer a{display:block;font-size:14px;color:#D6E2F7;padding:5px 0;transition:color .18s ease,transform .18s ease;}
  .footer a:hover{color:#fff;transform:translateX(3px);}
  .footer a:active{color:#BFD3F2;}
  .footer-bottom{
    margin-top:44px;border-top:1px solid rgba(255,255,255,.14);padding:20px 0 26px;
    display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
    font-size:13px;color:#9FB4D6;
  }

  /* ---------- 响应式 ---------- */
  @media (min-width:1024px){
    body{padding-left:var(--nav-w);}
    .bottom-bar{left:var(--nav-w);}
    .topbar,.drawer,.drawer-mask{display:none;}
  }
  @media (max-width:1023px){
    body{padding-top:56px;}
    .side-nav{display:none;}
    .container{padding:0 24px;}
    .section{padding:64px 0;}
    .section-tight{padding:48px 0;}
    .qcat-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
    .split{grid-template-columns:1fr;gap:28px;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
    .help-hero-inner{padding:40px 0 44px;}
    .help-hero h1{font-size:30px;}
  }
  @media (max-width:640px){
    .container{padding:0 16px;}
    .section{padding:48px 0;}
    .section-tight{padding:40px 0;}
    .help-hero h1{font-size:26px;}
    .h2{font-size:22px;}
    .qcat-grid{grid-template-columns:1fr;}
    .footer-grid{grid-template-columns:1fr;gap:24px;}
    .cta-band{padding:26px 20px;}
    .form-card{padding:20px;}
    .bottom-bar{height:60px;padding:0 14px;justify-content:center;}
    .bottom-bar .status{display:none;}
    .bottom-bar .btn{width:100%;}
    body{padding-bottom:76px;}
    .faq-item summary{padding:16px;font-size:15px;}
    .faq-body{padding:14px 16px 18px;font-size:14px;}
  }