/* roulang page: index */
:root{
  --primary:#2751D6;
  --primary-dark:#1C3BA8;
  --primary-light:#EAF0FE;
  --primary-line:#C9D6F8;
  --accent:#E4713A;
  --accent-dark:#C95A26;
  --accent-light:#FDF0E8;
  --data:#0F9E8E;
  --bg:#F6F8FB;
  --card:#FFFFFF;
  --soft:#F9FAFC;
  --line:#E6EAF2;
  --text:#101828;
  --text-2:#5A6472;
  --text-3:#98A2B3;
  --radius-lg:20px;
  --radius:16px;
  --radius-sm:10px;
  --shadow:0 1px 2px rgba(16,24,40,.04),0 10px 24px -14px rgba(16,24,40,.14);
  --shadow-hover:0 2px 4px rgba(16,24,40,.05),0 18px 36px -16px rgba(16,24,40,.20);
  --ease:cubic-bezier(.4,0,.2,1);
  --sidebar-w:232px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:700;letter-spacing:-.01em}
p{margin:0}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button,input,textarea{font:inherit;color:inherit}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
.tnum{font-variant-numeric:tabular-nums}

/* ---------- 布局骨架 ---------- */
.shell{display:flex;min-height:100vh}
.main{flex:1;min-width:0;padding-top:56px}
.container{max-width:1160px;margin:0 auto;padding:0 16px;width:100%}
.section{padding:48px 0}
.section-tight{padding:32px 0}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--primary);
  background:var(--primary-light);border:1px solid var(--primary-line);
  border-radius:999px;padding:4px 12px;
}
.eyebrow-accent{color:var(--accent-dark);background:var(--accent-light);border-color:#F6D9C7}
.h2{font-size:24px;margin-top:14px}
.lead{font-size:15px;color:var(--text-2);margin-top:12px;max-width:720px;line-height:1.85}

/* ---------- 侧栏导航 ---------- */
.sidebar{display:none}
.mobile-bar{
  position:fixed;top:0;left:0;right:0;height:56px;z-index:50;
  background:rgba(255,255,255,.94);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;
  padding:0 12px 0 16px;
}
.logo{display:flex;align-items:center;gap:10px;min-width:0}
.logo-mark{
  width:28px;height:28px;border-radius:8px;flex:0 0 28px;
  background:var(--primary);display:flex;align-items:center;justify-content:center;
  color:#fff;font-weight:700;font-size:15px;
}
.logo-text{font-size:18px;font-weight:700;letter-spacing:-.02em;white-space:nowrap}
.hamburger{
  width:44px;height:44px;display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line);background:#fff;border-radius:var(--radius-sm);cursor:pointer;
  transition:background .2s var(--ease),border-color .2s var(--ease);
}
.hamburger:hover{background:var(--soft)}
.drawer-mask{
  position:fixed;inset:0;background:rgba(16,24,40,.45);z-index:60;
  opacity:0;pointer-events:none;transition:opacity .2s var(--ease);
}
.drawer-mask.open{opacity:1;pointer-events:auto}
.drawer{
  position:fixed;top:0;bottom:0;left:0;width:280px;background:#fff;z-index:70;
  transform:translateX(-100%);transition:transform .2s var(--ease);
  display:flex;flex-direction:column;padding:16px;gap:6px;overflow-y:auto;
}
.drawer.open{transform:translateX(0)}
.nav-label{font-size:12px;letter-spacing:.08em;color:var(--text-3);font-weight:600;padding:14px 14px 6px}
.nav-item{
  position:relative;display:flex;align-items:center;gap:10px;
  height:44px;padding-left:14px;padding-right:12px;border-radius:var(--radius-sm);
  color:var(--text-2);font-size:15px;
  transition:background .2s var(--ease),color .2s var(--ease);
}
.nav-item svg{flex:0 0 18px;opacity:.85}
.nav-item:hover{background:var(--bg);color:var(--text)}
.nav-item.active{background:var(--primary-light);color:var(--primary);font-weight:600}
.nav-item.active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;
  border-radius:3px;background:var(--primary);
}
.sidebar-cta{margin-top:auto;padding-top:16px;border-top:1px solid var(--line)}
.sidebar-note{font-size:13px;color:var(--text-2);line-height:1.7;margin-top:10px}

/* ---------- 页头条 ---------- */
.topbar{
  height:64px;background:var(--card);border-bottom:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:0 16px;
}
.crumb{font-size:13px;color:var(--text-3);display:flex;align-items:center;gap:6px;min-width:0}
.crumb strong{color:var(--text-2);font-weight:500}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:12px 24px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:background .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease),color .2s var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-1px);box-shadow:0 14px 26px -14px rgba(39,81,214,.6)}
.btn-primary:active{transform:translateY(1px);box-shadow:none}
.btn-ghost{background:#fff;border-color:var(--primary-line);color:var(--primary)}
.btn-ghost:hover{background:var(--primary-light)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:var(--accent-dark);transform:translateY(-1px);box-shadow:0 14px 26px -14px rgba(228,113,58,.6)}
.btn-accent:active{transform:translateY(1px);box-shadow:none}
.btn-sm{min-height:40px;padding:8px 16px;font-size:14px}
.link-more{
  display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-weight:600;font-size:15px;
  background-image:linear-gradient(currentColor,currentColor);
  background-size:0% 1px;background-repeat:no-repeat;background-position:0 100%;
  transition:background-size .18s var(--ease);
}
.link-more:hover{background-size:100% 1px}
.link-more svg{transition:transform .18s var(--ease)}
.link-more:hover svg{transform:translateX(3px)}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;background:var(--card);
  border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow);
}
.hero-grid{display:grid;grid-template-columns:1fr;gap:0}
.hero-copy{padding:28px 20px 32px}
.hero h1{font-size:30px;margin-top:16px}
.hero-sub{font-size:15px;color:var(--text-2);margin-top:14px;max-width:560px;line-height:1.8}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
.hero-media{position:relative;min-height:220px;background:#E9EEFA}
.hero-media img{width:100%;height:100%;object-fit:cover;min-height:220px}
.hero-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(39,81,214,.06),rgba(39,81,214,.10));
}
.trust-band{
  border-top:1px solid var(--line);background:var(--soft);
  padding:18px 20px;display:grid;grid-template-columns:1fr 1fr;gap:14px 20px;
}
.trust-item{display:flex;align-items:flex-start;gap:8px;font-size:13px;color:var(--text-2);line-height:1.6}
.trust-item svg{flex:0 0 16px;margin-top:3px;color:var(--data)}

/* ---------- 卡片通用 ---------- */
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.card-pad{padding:20px}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;color:var(--primary);background:var(--primary-light);
  border-radius:999px;padding:3px 10px;
}
.badge-accent{color:var(--accent-dark);background:var(--accent-light)}
.badge-data{color:#0B7F73;background:#E4F6F3}

/* ---------- 痛点提问 ---------- */
.q-list{display:grid;grid-template-columns:1fr;gap:16px;margin-top:28px}
.q-card{
  position:relative;background:var(--soft);border:1px solid var(--line);border-radius:14px;
  padding:20px 20px 20px 64px;transition:background .2s var(--ease),border-color .2s var(--ease);
}
.q-card:hover{background:#fff;border-color:var(--primary-line)}
.q-num{
  position:absolute;left:20px;top:20px;width:28px;height:28px;border-radius:8px;
  background:var(--accent-light);color:var(--accent-dark);
  display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:700;font-variant-numeric:tabular-nums;
}
.q-card p{font-size:16px;font-weight:600;line-height:1.6}

/* ---------- 方案卡 ---------- */
.solution-grid{display:grid;grid-template-columns:1fr;gap:20px;margin-top:28px}
.big-card{overflow:hidden}
.big-card img{width:100%;height:220px;object-fit:cover}
.small-stack{display:grid;gap:20px;align-content:start}
.small-card{display:flex;gap:16px;overflow:hidden}
.small-card img{width:104px;height:100%;min-height:120px;object-fit:cover;flex:0 0 104px}
.small-card .body{padding:18px 18px 18px 0}
.card-title{font-size:18px;font-weight:600;margin-top:6px}
.card-desc{font-size:14px;color:var(--text-2);margin-top:8px;line-height:1.75}
.dot-list{margin-top:14px;display:grid;gap:8px}
.dot-list li{position:relative;padding-left:16px;font-size:14px;color:var(--text-2)}
.dot-list li::before{
  content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:50%;
  background:var(--primary-line);
}

/* ---------- 数据带 ---------- */
.stat-band{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);display:grid;grid-template-columns:1fr 1fr;
  overflow:hidden;
}
.stat{padding:22px 18px;text-align:left;border-top:1px solid var(--line)}
.stat:nth-child(1),.stat:nth-child(2){border-top:0}
.stat:nth-child(odd){border-right:1px solid var(--line)}
.stat-num{font-size:32px;font-weight:700;color:var(--primary);line-height:1.1;font-variant-numeric:tabular-nums}
.stat-num.alt{color:var(--data)}
.stat-label{font-size:13px;color:var(--text-2);margin-top:8px}

/* ---------- CMS 资讯 ---------- */
.news-list{display:grid;grid-template-columns:1fr;gap:16px;margin-top:28px}
.news-card{
  display:block;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:20px;box-shadow:var(--shadow);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:var(--primary-line)}
.news-card h3{
  font-size:17px;font-weight:600;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card .excerpt{
  font-size:14px;color:var(--text-2);margin-top:10px;line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:14px;font-size:13px;color:var(--text-3)}
.news-meta .sep{width:4px;height:4px;border-radius:50%;background:var(--text-3);opacity:.6}
.empty-state{
  min-height:180px;background:var(--soft);border:1px dashed var(--line);border-radius:var(--radius);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;
  padding:32px 20px;text-align:center;
}
.empty-state svg{color:var(--text-3)}
.empty-state p{font-size:15px;color:var(--text-2)}

/* ---------- CTA 区 ---------- */
.cta-band{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow);padding:28px 20px;
  display:grid;grid-template-columns:1fr;gap:20px;
}
.cta-band h2{font-size:22px}
.cta-band p{font-size:15px;color:var(--text-2);margin-top:12px;line-height:1.85;max-width:620px}

/* ---------- 隐私说明 ---------- */
.privacy{
  background:var(--soft);border:1px solid var(--line);border-radius:12px;padding:18px 20px;
}
.privacy p{font-size:13px;color:var(--text-2);line-height:1.8}
.privacy p + p{margin-top:8px}
.privacy a{color:var(--primary);text-decoration:underline;text-underline-offset:3px}

/* ---------- FAQ ---------- */
.faq-list{margin-top:28px;display:grid;gap:12px}
.faq-item{
  background:var(--card);border:1px solid var(--line);border-left:3px solid var(--line);
  border-radius:12px;overflow:hidden;transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.faq-item[open]{border-left-color:var(--primary);box-shadow:var(--shadow)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:18px 52px 18px 20px;position:relative;
  font-size:16px;font-weight:600;line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"";position:absolute;right:20px;top:23px;width:9px;height:9px;
  border-right:2px solid var(--text-2);border-bottom:2px solid var(--text-2);
  transform:rotate(45deg);transition:transform .18s var(--ease);
}
.faq-item[open] summary::after{transform:rotate(-135deg);border-color:var(--primary)}
.faq-item .answer{padding:0 44px 20px 20px;font-size:15px;color:var(--text-2);line-height:1.85}

/* ---------- 弹层 ---------- */
.dialog-mask{
  position:fixed;inset:0;z-index:100;background:rgba(16,24,40,.5);
  display:flex;align-items:flex-end;justify-content:center;padding:0;
}
.dialog-mask[hidden]{display:none}
.dialog{
  width:100%;max-width:480px;background:#fff;border-radius:18px 18px 0 0;
  padding:24px 20px 28px;box-shadow:0 30px 60px -20px rgba(16,24,40,.45);
  position:relative;max-height:92vh;overflow-y:auto;
}
.dialog-close{
  position:absolute;top:12px;right:12px;width:40px;height:40px;border-radius:10px;
  border:1px solid var(--line);background:#fff;cursor:pointer;
  display:flex;align-items:center;justify-content:center;color:var(--text-2);
  transition:background .2s var(--ease);
}
.dialog-close:hover{background:var(--soft)}
.field{margin-top:14px}
.field label{display:block;font-size:13px;font-weight:600;color:var(--text-2);margin-bottom:6px}
.field input[type="text"],.field input[type="tel"],.field textarea{
  width:100%;min-height:44px;border:1px solid var(--line);border-radius:var(--radius-sm);
  padding:11px 14px;background:#fff;font-size:15px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field textarea{min-height:96px;resize:vertical;line-height:1.7}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-light);
}
.check-row{display:flex;align-items:flex-start;gap:10px;margin-top:16px;font-size:13px;color:var(--text-2);line-height:1.7}
.check-row input{width:18px;height:18px;margin-top:2px;accent-color:var(--primary);flex:0 0 18px}
.form-hint{font-size:12px;color:var(--text-3);margin-top:12px;line-height:1.7}

/* ---------- 页脚 ---------- */
.footer{background:#fff;border-top:1px solid var(--line);margin-top:48px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:28px;padding:40px 0 28px}
.footer h4{font-size:14px;font-weight:700;color:var(--text)}
.footer-links{margin-top:14px;display:grid;gap:10px}
.footer-links a{font-size:14px;color:var(--text-2);transition:color .18s var(--ease)}
.footer-links a:hover{color:var(--primary)}
.footer-about{font-size:14px;color:var(--text-2);margin-top:14px;line-height:1.85;max-width:340px}
.footer-bottom{
  border-top:1px solid var(--line);padding:18px 0 28px;
  display:flex;flex-direction:column;gap:8px;font-size:13px;color:var(--text-3);
}

/* ---------- 响应式 ---------- */
@media (min-width:640px){
  .container{padding:0 24px}
  .hero-copy{padding:36px 32px 40px}
  .hero h1{font-size:36px}
  .hero-sub{font-size:16px}
  .trust-band{grid-template-columns:repeat(4,1fr);padding:20px 32px}
  .q-list{grid-template-columns:1fr 1fr}
  .news-list{grid-template-columns:1fr 1fr}
  .stat-band{grid-template-columns:repeat(4,1fr)}
  .stat{border-top:0;border-right:1px solid var(--line)}
  .stat:nth-child(4){border-right:0}
  .stat:nth-child(odd){border-right:1px solid var(--line)}
  .cta-band{padding:36px 32px;grid-template-columns:1fr auto;align-items:center}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr}
  .footer-bottom{flex-direction:row;justify-content:space-between;align-items:center}
  .dialog-mask{align-items:center;padding:24px}
  .dialog{border-radius:18px;padding:28px}
}
@media (min-width:1024px){
  .mobile-bar{display:none}
  .main{padding-top:0;margin-left:var(--sidebar-w)}
  .sidebar{
    display:flex;flex-direction:column;position:fixed;top:0;bottom:0;left:0;
    width:var(--sidebar-w);background:#fff;border-right:1px solid var(--line);
    padding:20px 16px 20px;z-index:40;overflow-y:auto;
  }
  .drawer,.drawer-mask{display:none}
  .section{padding:88px 0}
  .section-tight{padding:48px 0}
  .hero-grid{grid-template-columns:7fr 5fr}
  .hero-copy{padding:52px 44px 52px}
  .hero h1{font-size:46px}
  .hero-media{min-height:100%}
  .hero-media img{min-height:100%}
  .h2{font-size:32px}
  .lead{font-size:16px}
  .solution-grid{grid-template-columns:1.25fr 1fr;gap:24px}
  .news-list{grid-template-columns:1fr 1fr 1fr}
  .stat-num{font-size:40px}
  .footer-grid{gap:40px}
}
@media (min-width:1280px){
  .container{max-width:1160px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
  .card:hover,.news-card:hover,.btn:hover{transform:none}
}

/* roulang page: article */
:root{
    --primary:#2751D6;
    --primary-dark:#1C3BA8;
    --primary-light:#EAF0FE;
    --primary-line:#C9D6F8;
    --accent:#E4713A;
    --accent-dark:#C95A26;
    --accent-light:#FDF0E8;
    --data:#0F9E8E;
    --bg:#F6F8FB;
    --card:#FFFFFF;
    --soft:#F9FAFC;
    --line:#E6EAF2;
    --text:#101828;
    --text-2:#5A6472;
    --text-3:#98A2B3;
    --r-card:16px;
    --r-btn:10px;
    --r-img:12px;
    --r-hero:20px;
    --r-pill:999px;
    --sh-1:0 1px 2px rgba(16,24,40,.04), 0 10px 24px -14px rgba(16,24,40,.14);
    --sh-2:0 2px 4px rgba(16,24,40,.05), 0 18px 36px -16px rgba(16,24,40,.20);
    --ease:cubic-bezier(.4,0,.2,1);
    --sidebar-w:232px;
  }

  *,*::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:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
    font-size:16px;
    line-height:1.75;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;}
  button,input,textarea,select{font:inherit;color:inherit;}
  button{cursor:pointer;border:0;background:none;}
  h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:700;color:var(--text);}
  p{margin:0;}
  ul,ol{margin:0;padding:0;list-style:none;}
  :focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}
  ::selection{background:var(--primary-light);color:var(--primary-dark);}
  ::-webkit-scrollbar{width:10px;height:10px;}
  ::-webkit-scrollbar-thumb{background:#D5DCE9;border-radius:999px;border:2px solid var(--bg);}
  ::-webkit-scrollbar-thumb:hover{background:#BFC9DC;}

  .container{width:100%;max-width:1160px;margin:0 auto;padding:0 32px;}
  .num{font-variant-numeric:tabular-nums;}

  /* ---------- 布局骨架 ---------- */
  .shell{display:flex;min-height:100vh;}
  .sidebar{
    position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
    background:var(--card);border-right:1px solid var(--line);
    padding:22px 16px 18px;display:flex;flex-direction:column;overflow-y:auto;z-index:40;
  }
  .main{flex:1;min-width:0;margin-left:var(--sidebar-w);display:flex;flex-direction:column;}

  /* ---------- 品牌 ---------- */
  .logo{display:flex;align-items:center;gap:10px;}
  .logo-mark{
    width:28px;height:28px;flex:0 0 28px;border-radius:8px;
    background:var(--primary);color:#fff;display:grid;place-items:center;
    font-size:14px;font-weight:700;letter-spacing:.5px;
  }
  .logo-text{font-size:20px;font-weight:700;letter-spacing:.2px;color:var(--text);white-space:nowrap;}
  .logo-sub{margin-top:6px;font-size:12px;color:var(--text-3);letter-spacing:.4px;}

  /* ---------- 侧栏导航 ---------- */
  .side-nav{display:flex;flex-direction:column;gap:4px;}
  .nav-item{
    position:relative;display:flex;align-items:center;gap:10px;height:44px;
    padding:0 14px;border-radius:var(--r-btn);font-size:15px;color:var(--text-2);
    transition:background .18s var(--ease),color .18s var(--ease);
  }
  .nav-item svg{flex:0 0 18px;opacity:.9;}
  .nav-item:hover{background:var(--bg);color:var(--text);}
  .nav-item.active{background:var(--primary-light);color:var(--primary);font-weight:600;}
  .nav-item.active::before{
    content:"";position:absolute;left:-16px;top:50%;transform:translateY(-50%);
    width:3px;height:22px;border-radius:0 3px 3px 0;background:var(--primary);
  }
  .side-divider{height:1px;background:var(--line);margin:20px 0 16px;}
  .side-label{font-size:12px;color:var(--text-3);letter-spacing:.6px;padding:0 14px;margin-bottom:6px;}
  .side-foot{margin-top:auto;padding-top:20px;}
  .side-card{
    background:var(--soft);border:1px solid var(--line);border-radius:14px;padding:16px;
  }
  .side-card h4{font-size:14px;margin-bottom:6px;}
  .side-card p{font-size:13px;color:var(--text-2);line-height:1.7;}
  .side-contact{margin-top:12px;font-size:13px;color:var(--text-2);display:flex;flex-direction:column;gap:6px;}
  .side-contact span{display:flex;align-items:center;gap:8px;}
  .dot{width:6px;height:6px;border-radius:50%;background:var(--data);flex:0 0 6px;}

  /* ---------- 移动端顶栏 + 抽屉 ---------- */
  .mobile-bar{
    display:none;position:sticky;top:0;z-index:50;height:56px;align-items:center;justify-content:space-between;
    padding:0 16px;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);border-bottom:1px solid var(--line);
  }
  .burger{
    width:44px;height:44px;border-radius:10px;display:grid;place-items:center;color:var(--text-2);
    transition:background .18s var(--ease);
  }
  .burger:hover{background:var(--bg);}
  .drawer-mask{
    position:fixed;inset:0;background:rgba(16,24,40,.45);opacity:0;visibility:hidden;
    transition:opacity .2s var(--ease),visibility .2s var(--ease);z-index:60;
  }
  .drawer-mask.open{opacity:1;visibility:visible;}
  .drawer{
    position:fixed;top:0;left:0;bottom:0;width:280px;background:#fff;z-index:70;
    padding:20px 16px;transform:translateX(-100%);transition:transform .2s var(--ease);
    display:flex;flex-direction:column;overflow-y:auto;box-shadow:var(--sh-2);
  }
  .drawer.open{transform:translateX(0);}
  .drawer-close{width:40px;height:40px;border-radius:10px;display:grid;place-items:center;color:var(--text-2);margin-left:auto;}

  /* ---------- 顶部页头 ---------- */
  .pagebar{
    height:64px;display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:0 32px;background:#fff;border-bottom:1px solid var(--line);
  }
  .crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-2);min-width:0;}
  .crumb a{color:var(--text-2);transition:color .18s var(--ease);}
  .crumb a:hover{color:var(--primary);}
  .crumb .sep{color:var(--text-3);}
  .crumb .now{color:var(--text-3);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:320px;}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    min-height:44px;padding:12px 24px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
    transition:transform .18s var(--ease),background .18s var(--ease),box-shadow .18s var(--ease),color .18s var(--ease);
    white-space:nowrap;
  }
  .btn-primary{background:var(--primary);color:#fff;box-shadow:var(--sh-1);}
  .btn-primary:hover{background:var(--primary-dark);transform:translateY(-1px);box-shadow:var(--sh-2);}
  .btn-primary:active{transform:translateY(1px);box-shadow:none;}
  .btn-ghost{background:#fff;color:var(--primary);border:1px solid var(--primary-line);}
  .btn-ghost:hover{background:var(--primary-light);}
  .btn-accent{background:var(--accent);color:#fff;}
  .btn-accent:hover{background:var(--accent-dark);transform:translateY(-1px);}
  .btn-link{
    display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-weight:600;font-size:14px;
    position:relative;min-height:32px;
  }
  .btn-link::after{
    content:"";position:absolute;left:0;bottom:2px;height:1px;width:0;background:var(--primary);
    transition:width .18s var(--ease);
  }
  .btn-link:hover::after{width:100%;}

  /* ---------- 文章头部 ---------- */
  .article-head{
    background:linear-gradient(180deg,#FFFFFF 0%,#F9FAFC 62%,var(--bg) 100%);
    border-bottom:1px solid var(--line);
    padding:36px 0 40px;
  }
  .head-inner{max-width:1080px;margin:0 auto;padding:0 32px;}
  .badge-cat{
    display:inline-flex;align-items:center;gap:6px;background:var(--primary-light);color:var(--primary);
    font-size:12px;font-weight:600;padding:4px 12px;border-radius:var(--r-pill);
  }
  .article-title{
    font-size:34px;line-height:1.3;letter-spacing:-.2px;margin-top:16px;max-width:860px;
  }
  .meta-row{
    display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:18px;
    font-size:13px;color:var(--text-3);
  }
  .meta-row .midot{width:4px;height:4px;border-radius:50%;background:#D5DCE9;}
  .cover-wrap{
    margin-top:28px;border-radius:var(--r-hero);overflow:hidden;position:relative;
    border:1px solid var(--line);background:#fff;box-shadow:var(--sh-1);
  }
  .cover-wrap img{width:100%;aspect-ratio:16/9;object-fit:cover;}
  .cover-wrap::after{
    content:"";position:absolute;inset:0;background:rgba(39,81,214,.06);pointer-events:none;
  }

  /* ---------- 文章主体网格 ---------- */
  .article-main{padding:56px 0 8px;}
  .article-grid{
    max-width:1080px;margin:0 auto;padding:0 32px;
    display:grid;grid-template-columns:minmax(0,760px) 280px;gap:40px;align-items:start;
  }
  .paper{
    background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
    box-shadow:var(--sh-1);padding:32px;
  }

  /* ---------- 正文排版 ---------- */
  .prose{font-size:17px;line-height:1.85;color:var(--text);}
  .prose > * + *{margin-top:20px;}
  .prose p{font-size:17px;line-height:1.85;color:#22303F;}
  .prose h2{
    font-size:24px;line-height:1.35;margin-top:40px;padding-left:14px;position:relative;
  }
  .prose h2::before{
    content:"";position:absolute;left:0;top:.28em;width:4px;height:16px;border-radius:2px;background:var(--primary);
  }
  .prose h3{font-size:19px;line-height:1.45;margin-top:30px;color:var(--primary-dark);}
  .prose h4{font-size:17px;margin-top:22px;}
  .prose a{color:var(--primary);border-bottom:1px solid var(--primary-line);transition:border-color .18s var(--ease);}
  .prose a:hover{border-color:var(--primary);}
  .prose strong{font-weight:700;color:var(--text);}
  .prose ul,.prose ol{display:flex;flex-direction:column;gap:10px;padding-left:2px;}
  .prose ul li{position:relative;padding-left:20px;color:#22303F;}
  .prose ul li::before{
    content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;border-radius:2px;
    background:var(--primary-line);
  }
  .prose ol{counter-reset:olc;}
  .prose ol li{position:relative;padding-left:30px;counter-increment:olc;color:#22303F;}
  .prose ol li::before{
    content:counter(olc);position:absolute;left:0;top:.28em;width:20px;height:20px;border-radius:6px;
    background:var(--primary-light);color:var(--primary);font-size:12px;font-weight:700;
    display:grid;place-items:center;line-height:1;
  }
  .prose blockquote{
    border-left:3px solid var(--primary);background:var(--soft);border-radius:0 12px 12px 0;
    padding:16px 20px;color:var(--text-2);font-size:16px;
  }
  .prose blockquote p{font-size:16px;color:var(--text-2);}
  .prose img{border-radius:var(--r-img);margin-top:8px;}
  .prose figure{margin:0;}
  .prose figcaption{font-size:13px;color:var(--text-3);margin-top:8px;text-align:center;}
  .prose hr{border:0;height:1px;background:var(--line);margin:32px 0;}
  .prose table{
    width:100%;border-collapse:separate;border-spacing:0;font-size:15px;
    border:1px solid var(--line);border-radius:12px;overflow:hidden;
  }
  .prose .table-scroll{overflow-x:auto;border-radius:12px;}
  .prose th{background:var(--primary-light);color:var(--primary-dark);font-weight:600;text-align:left;padding:12px 16px;}
  .prose td{padding:12px 16px;border-top:1px solid var(--line);color:#22303F;}
  .prose tbody tr:nth-child(even) td{background:var(--soft);}
  .prose code{background:var(--soft);border:1px solid var(--line);border-radius:6px;padding:2px 6px;font-size:14px;}

  /* ---------- 文末区 ---------- */
  .art-foot{margin-top:40px;display:flex;flex-direction:column;gap:24px;}
  .tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;}
  .tag-row .tag-label{font-size:13px;color:var(--text-3);}
  .tag{
    display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:var(--r-pill);
    background:var(--soft);border:1px solid var(--line);font-size:13px;color:var(--text-2);
    transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
  }
  .tag:hover{background:var(--primary-light);color:var(--primary);border-color:var(--primary-line);}
  .notice{
    display:flex;gap:14px;background:var(--soft);border:1px solid var(--line);border-radius:var(--r-card);
    padding:20px;
  }
  .notice .notice-ico{
    flex:0 0 36px;width:36px;height:36px;border-radius:10px;background:var(--accent-light);color:var(--accent);
    display:grid;place-items:center;
  }
  .notice h4{font-size:15px;margin-bottom:6px;}
  .notice p{font-size:13px;color:var(--text-2);line-height:1.75;}

  .pn-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
  .pn-card{
    background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:20px;
    box-shadow:var(--sh-1);transition:transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
    display:flex;flex-direction:column;gap:8px;min-height:96px;
  }
  .pn-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--primary-line);}
  .pn-card .pn-k{font-size:12px;color:var(--text-3);letter-spacing:.4px;}
  .pn-card .pn-t{font-size:16px;font-weight:600;line-height:1.5;}
  .pn-card.next{text-align:right;align-items:flex-end;}

  /* ---------- 侧栏 ---------- */
  .side-col{display:flex;flex-direction:column;gap:20px;}
  .side-box{
    background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:20px;box-shadow:var(--sh-1);
  }
  .side-box h3{font-size:15px;margin-bottom:12px;display:flex;align-items:center;gap:8px;}
  .side-box h3 .bar{width:3px;height:14px;border-radius:2px;background:var(--primary);}
  .toc-list{display:flex;flex-direction:column;gap:2px;}
  .toc-link{
    display:block;font-size:14px;color:var(--text-2);padding:7px 10px;border-radius:8px;line-height:1.5;
    transition:background .18s var(--ease),color .18s var(--ease);
  }
  .toc-link:hover{background:var(--soft);color:var(--primary);}
  .toc-link.is-sub{padding-left:22px;font-size:13px;color:var(--text-3);}
  .toc-link.current{background:var(--primary-light);color:var(--primary);font-weight:600;}
  .quick-list{display:flex;flex-direction:column;}
  .quick-list a{
    display:flex;align-items:center;justify-content:space-between;gap:10px;
    padding:11px 0;font-size:14px;color:var(--text-2);border-bottom:1px solid var(--line);
    transition:color .18s var(--ease),padding-left .18s var(--ease);
  }
  .quick-list a:last-child{border-bottom:0;}
  .quick-list a:hover{color:var(--primary);padding-left:4px;}
  .side-note{background:var(--primary-light);border-color:var(--primary-line);}
  .side-note p{font-size:13px;color:var(--primary-dark);line-height:1.75;}

  /* ---------- 推荐区 ---------- */
  .rel-section{padding:56px 0 8px;}
  .sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:24px;}
  .sec-head h2{font-size:24px;}
  .sec-head p{font-size:14px;color:var(--text-2);margin-top:6px;}
  .rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
  .rel-card{
    background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
    box-shadow:var(--sh-1);display:flex;flex-direction:column;
    transition:transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
  }
  .rel-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--primary-line);}
  .rel-card img{width:100%;aspect-ratio:16/10;object-fit:cover;}
  .rel-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
  .rel-body h3{font-size:17px;line-height:1.5;}
  .rel-body p{font-size:14px;color:var(--text-2);line-height:1.75;}
  .rel-body .btn-link{margin-top:auto;}

  .back-row{padding:32px 0 72px;display:flex;justify-content:center;}

  /* ---------- 空态 ---------- */
  .empty{
    min-height:180px;background:var(--soft);border:1px dashed var(--line);border-radius:var(--r-card);
    display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;text-align:center;padding:32px;
  }
  .empty svg{color:var(--text-3);}
  .empty p{font-size:15px;color:var(--text-2);}

  /* ---------- 页脚 ---------- */
  .footer{background:#fff;border-top:1px solid var(--line);margin-top:24px;}
  .footer-grid{
    display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px;padding:56px 0 40px;
  }
  .footer h4{font-size:14px;margin-bottom:14px;letter-spacing:.2px;}
  .footer-about{font-size:13.5px;color:var(--text-2);line-height:1.8;margin-top:14px;max-width:330px;}
  .footer-links{display:flex;flex-direction:column;gap:10px;}
  .footer-links a{font-size:14px;color:var(--text-2);transition:color .18s var(--ease);}
  .footer-links a:hover{color:var(--primary);}
  .footer-bottom{
    border-top:1px solid var(--line);padding:20px 0 32px;display:flex;flex-wrap:wrap;gap:12px;
    align-items:center;justify-content:space-between;font-size:13px;color:var(--text-3);
  }

  /* ---------- 响应式 ---------- */
  @media (max-width:1200px){
    .article-grid{grid-template-columns:minmax(0,1fr) 260px;gap:32px;}
  }
  @media (max-width:1023px){
    .sidebar{display:none;}
    .main{margin-left:0;}
    .mobile-bar{display:flex;}
    .pagebar{padding:0 20px;}
    .article-grid{grid-template-columns:1fr;gap:28px;max-width:100%;padding:0 20px;}
    .side-col{order:2;}
    .head-inner{padding:0 20px;}
    .container{padding:0 20px;}
    .rel-grid{grid-template-columns:1fr;gap:16px;}
    .fn-grid{grid-template-columns:1fr 1fr;}
  }
  @media (max-width:767px){
    .article-title{font-size:26px;}
    .paper{padding:22px;}
    .prose,.prose p{font-size:16.5px;}
    .prose h2{font-size:21px;margin-top:32px;}
    .prose h3{font-size:18px;}
    .article-head{padding:26px 0 30px;}
    .article-main{padding:36px 0 0;}
    .rel-section{padding:40px 0 0;}
    .pn-grid{grid-template-columns:1fr;}
    .pn-card.next{text-align:left;align-items:flex-start;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:28px;padding:40px 0 28px;}
    .footer-about{max-width:100%;}
    .crumb .now{max-width:180px;}
  }
  @media (max-width:520px){
    .article-title{font-size:23px;}
    .head-inner,.article-grid,.container{padding:0 16px;}
    .pagebar{padding:0 12px;gap:10px;}
    .pagebar .btn{padding:10px 16px;font-size:14px;}
    .footer-grid{grid-template-columns:1fr;}
    .cover-wrap{margin-top:20px;border-radius:16px;}
    .meta-row{gap:8px;}
    .sec-head{flex-direction:column;align-items:flex-start;}
  }
  @media (prefers-reduced-motion:reduce){
    *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
    .rel-card:hover,.pn-card:hover,.btn-primary:hover{transform:none;}
  }

/* roulang page: category1 */
:root{
  --primary:#2751D6;
  --primary-dark:#1C3BA8;
  --primary-light:#EAF0FE;
  --primary-line:#C9D6F8;
  --accent:#E4713A;
  --accent-dark:#C95A26;
  --accent-light:#FDF0E8;
  --data:#0F9E8E;
  --bg:#F6F8FB;
  --card:#FFFFFF;
  --soft:#F9FAFC;
  --line:#E6EAF2;
  --text:#101828;
  --text-2:#5A6472;
  --text-3:#98A2B3;
  --white:#FFFFFF;
  --r-card:16px;
  --r-btn:10px;
  --r-img:12px;
  --r-hero:20px;
  --shadow-1:0 1px 2px rgba(16,24,40,.04), 0 10px 24px -14px rgba(16,24,40,.14);
  --shadow-2:0 2px 4px rgba(16,24,40,.05), 0 18px 36px -16px rgba(16,24,40,.20);
  --sidebar-w:232px;
  --ease:cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box;}
html body{
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
body h1,body h2,body h3,body h4{margin:0;color:var(--text);line-height:1.25;}
body p{margin:0;}
body ul{margin:0;padding:0;list-style:none;}
body a{color:var(--primary);text-decoration:none;}
body img{display:block;max-width:100%;height:auto;}
body button{font-family:inherit;}
body input,body textarea{font-family:inherit;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--primary);color:#fff;padding:10px 16px;border-radius:0 0 10px 0;z-index:200;}
.skip-link:focus{left:0;}

/* ---------- 布局骨架 ---------- */
.sidebar{
  position:fixed;top:0;left:0;width:var(--sidebar-w);height:100vh;
  background:var(--card);border-right:1px solid var(--line);z-index:60;
}
.sidebar-inner{display:flex;flex-direction:column;height:100%;padding:24px 16px;overflow-y:auto;}
.main-area{margin-left:var(--sidebar-w);min-height:100vh;display:flex;flex-direction:column;}
.container{width:100%;max-width:1160px;margin:0 auto;padding:0 16px;}
.mobile-bar{
  display:none;align-items:center;gap:12px;height:56px;padding:0 16px;
  background:var(--card);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:70;
}
.menu-btn{
  width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:var(--r-btn);background:var(--card);color:var(--text-2);cursor:pointer;
  transition:background .18s var(--ease),color .18s var(--ease);
}
.menu-btn:hover{background:var(--bg);color:var(--primary);}
.overlay{
  display:none;position:fixed;inset:0;background:rgba(16,24,40,.45);z-index:55;
  opacity:0;transition:opacity .2s var(--ease);
}
.overlay.show{display:block;opacity:1;}

/* ---------- Logo ---------- */
.logo{display:flex;align-items:center;gap:10px;color:var(--text);text-decoration:none;}
.logo-mark{
  width:28px;height:28px;border-radius:8px;background:var(--primary);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;font-size:15px;font-weight:700;flex:0 0 auto;
}
.logo-text{font-size:20px;font-weight:700;letter-spacing:.2px;color:var(--text);}
.logo-sm .logo-text{font-size:17px;}

/* ---------- 侧栏导航 ---------- */
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;height:44px;padding:0 14px;
  border-radius:var(--r-btn);color:var(--text-2);font-size:15px;
  transition:background .18s var(--ease),color .18s var(--ease);
}
.nav-item svg{flex:0 0 auto;}
.nav-item:hover{background:var(--bg);color:var(--text);}
.nav-item.active{background:var(--primary-light);color:var(--primary);font-weight:600;}
.nav-item.active::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:22px;border-radius:2px;background:var(--primary);
}
.sidebar-sep{height:1px;background:var(--line);margin:20px 0 16px;}
.sidebar-sub{display:flex;flex-direction:column;gap:6px;}
.sub-item{
  display:flex;align-items:center;gap:10px;min-height:40px;padding:0 14px;border-radius:var(--r-btn);
  color:var(--text-2);font-size:14px;transition:background .18s var(--ease),color .18s var(--ease);
}
.sub-item:hover{background:var(--soft);color:var(--primary);}
.sidebar-foot{margin-top:auto;padding-top:20px;}
.sidebar-note{font-size:13px;color:var(--text-3);margin-top:10px;line-height:1.6;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:12px 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;cursor:pointer;
  transition:background .2s var(--ease),color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 8px 18px -10px rgba(39,81,214,.75);}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-1px);box-shadow:0 12px 24px -10px rgba(39,81,214,.65);color:#fff;}
.btn-primary:active{transform:translateY(0);box-shadow:none;}
.btn-ghost{background:var(--card);color:var(--primary);border-color:var(--primary-line);}
.btn-ghost:hover{background:var(--primary-light);color:var(--primary-dark);}
.btn-sm{min-height:40px;padding:10px 18px;font-size:14px;}
.btn-block{width:100%;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;position:relative;
  color:var(--primary);font-size:15px;font-weight:600;padding-bottom:3px;
}
.link-arrow::after{
  content:"";position:absolute;left:0;bottom:0;height:1px;width:0;background:var(--primary);
  transition:width .18s var(--ease);
}
.link-arrow:hover::after{width:100%;}
.link-arrow svg{transition:transform .18s var(--ease);}
.link-arrow:hover svg{transform:translateX(3px);}

/* ---------- 页头条 ---------- */
.page-head{background:var(--card);border-bottom:1px solid var(--line);}
.page-head-inner{
  max-width:1160px;margin:0 auto;padding:0 16px;min-height:64px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.crumbs{font-size:13px;color:var(--text-3);display:flex;align-items:center;gap:8px;flex-wrap:wrap;}
.crumbs a{color:var(--text-2);}
.crumbs a:hover{color:var(--primary);}
.crumbs .sep{color:var(--text-3);}
.crumbs .current{color:var(--text-3);}

/* ---------- 横幅 ---------- */
.banner{
  position:relative;
  background-image:linear-gradient(180deg,rgba(234,240,254,.82),rgba(246,248,251,.88)),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.banner-inner{min-height:240px;display:flex;flex-direction:column;justify-content:flex-end;padding-top:48px;padding-bottom:40px;}
.banner-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px;}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  background:rgba(255,255,255,.86);border:1px solid var(--primary-line);color:var(--primary);
  font-size:12px;font-weight:600;
}
.banner h1{font-size:46px;font-weight:700;letter-spacing:-.5px;max-width:820px;}
.banner-sub{margin-top:14px;font-size:17px;color:var(--text-2);max-width:660px;line-height:1.7;}

/* ---------- 板块 ---------- */
.section{padding:56px 0;}
.sec-head{margin-bottom:32px;max-width:760px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  color:var(--primary);letter-spacing:.5px;margin-bottom:12px;
}
.eyebrow::before{content:"";width:16px;height:2px;border-radius:2px;background:var(--accent);}
.sec-head h2{font-size:32px;font-weight:700;letter-spacing:-.3px;}
.sec-head p{margin-top:14px;font-size:16px;color:var(--text-2);line-height:1.8;}
.prose{max-width:820px;font-size:17px;line-height:1.85;color:var(--text-2);}
.prose + .prose{margin-top:18px;}
.chip-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.chip{
  display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border-radius:999px;
  background:var(--card);border:1px solid var(--line);font-size:13px;color:var(--text-2);
}
.chip i{width:6px;height:6px;border-radius:999px;background:var(--data);display:inline-block;}

/* ---------- 图文交替 ---------- */
.zig-row{display:grid;grid-template-columns:5fr 7fr;gap:44px;align-items:center;margin-bottom:56px;}
.zig-row:last-child{margin-bottom:0;}
.zig-media{order:1;}
.zig-body{order:2;}
.zig-row.reverse .zig-media{order:2;}
.zig-row.reverse .zig-body{order:1;}
.zig-media img{width:100%;border-radius:var(--r-hero);box-shadow:var(--shadow-1);}
.zig-media .media-cap{font-size:13px;color:var(--text-3);margin-top:12px;}
.zig-body h3{font-size:20px;font-weight:600;}
.zig-body p{margin-top:14px;font-size:16px;color:var(--text-2);line-height:1.8;}
.point-list{margin-top:18px;display:flex;flex-direction:column;gap:10px;}
.point-list li{position:relative;padding-left:22px;font-size:15px;color:var(--text-2);}
.point-list li::before{
  content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:3px;
  background:var(--primary-light);border:1.5px solid var(--primary);
}
.zig-body .link-arrow{margin-top:20px;}

/* ---------- 数据带 ---------- */
.metrics{
  display:grid;grid-template-columns:repeat(4,1fr);
  background:var(--card);border-radius:var(--r-card);box-shadow:var(--shadow-1);overflow:hidden;
}
.metric{padding:30px 26px;}
.metric + .metric{border-left:1px solid var(--line);}
.metric-num{
  font-size:40px;font-weight:700;line-height:1.1;color:var(--primary);
  font-variant-numeric:tabular-nums;letter-spacing:-1px;
}
.metric:nth-child(2) .metric-num{color:var(--data);}
.metric:nth-child(3) .metric-num{color:var(--accent);}
.metric-label{margin-top:8px;font-size:13px;color:var(--text-2);}

/* ---------- 提示带 ---------- */
.note-band{
  display:flex;gap:20px;align-items:flex-start;background:var(--soft);
  border:1px solid var(--line);border-radius:var(--r-card);padding:28px;
}
.note-icon{
  flex:0 0 auto;width:44px;height:44px;border-radius:12px;background:var(--accent-light);
  color:var(--accent-dark);display:flex;align-items:center;justify-content:center;
}
.note-band h2{font-size:20px;font-weight:600;}
.note-band p{margin-top:10px;font-size:15px;color:var(--text-2);line-height:1.8;max-width:820px;}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:16px;}
.faq-item{
  background:var(--card);border:1px solid var(--line);border-radius:14px;padding:24px;
  box-shadow:var(--shadow-1);transition:box-shadow .2s var(--ease),transform .2s var(--ease);
}
.faq-item:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);}
.faq-item h3{font-size:17px;font-weight:600;display:flex;gap:12px;align-items:flex-start;}
.faq-item h3 .q-mark{
  flex:0 0 auto;width:24px;height:24px;border-radius:8px;background:var(--primary-light);
  color:var(--primary);font-size:12px;font-weight:700;display:inline-flex;align-items:center;justify-content:center;margin-top:2px;
}
.faq-item p{margin-top:12px;padding-left:36px;font-size:15px;color:var(--text-2);line-height:1.8;}

/* ---------- CTA ---------- */
.cta-band{
  background:linear-gradient(135deg,#EAF0FE 0%,#F9FAFC 62%,#FDF0E8 100%);
  border:1px solid var(--primary-line);border-radius:var(--r-hero);padding:44px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-band h2{font-size:28px;font-weight:700;max-width:560px;}
.cta-band p{margin-top:12px;font-size:15px;color:var(--text-2);max-width:560px;line-height:1.8;}
.cta-actions{display:flex;flex-direction:column;gap:10px;min-width:220px;}
.cta-hint{font-size:12.5px;color:var(--text-3);}

/* ---------- 页脚 ---------- */
.footer{background:#0F172A;color:#fff;margin-top:auto;}
.footer .container{padding-top:56px;padding-bottom:24px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;}
.footer .logo-text{color:#fff;}
.footer-about{margin-top:14px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);max-width:320px;}
.footer h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{font-size:14px;color:rgba(255,255,255,.68);transition:color .18s var(--ease);}
.footer-links a:hover{color:#fff;}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- 弹层 ---------- */
.dialog-mask{
  position:fixed;inset:0;background:rgba(16,24,40,.45);z-index:120;
  display:none;align-items:center;justify-content:center;padding:16px;
}
.dialog-mask.show{display:flex;}
.dialog{
  position:relative;width:480px;max-width:100%;background:var(--card);border-radius:18px;
  padding:28px;box-shadow:0 24px 60px -20px rgba(16,24,40,.5);
}
.dialog h2{font-size:22px;font-weight:700;}
.dialog .dialog-sub{margin-top:8px;font-size:14px;color:var(--text-2);line-height:1.7;}
.dialog-close{
  position:absolute;top:16px;right:16px;width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
  background:var(--card);color:var(--text-2);display:inline-flex;align-items:center;justify-content:center;cursor:pointer;
  transition:background .18s var(--ease),color .18s var(--ease);
}
.dialog-close:hover{background:var(--bg);color:var(--text);}
.form-grid{margin-top:20px;display:grid;gap:14px;}
.field label{display:block;font-size:13px;font-weight:600;color:var(--text-2);margin-bottom:6px;}
.field input,.field textarea{
  width:100%;min-height:44px;padding:11px 14px;border:1px solid var(--line);border-radius:var(--r-btn);
  background:var(--card);font-size:15px;color:var(--text);transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.field textarea{min-height:96px;resize:vertical;line-height:1.7;}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(39,81,214,.14);
}
.check-row{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--text-2);line-height:1.7;}
.check-row input{width:18px;height:18px;margin-top:2px;accent-color:var(--primary);flex:0 0 auto;}
.form-tip{font-size:12.5px;color:var(--text-3);}

/* ---------- 响应式 ---------- */
@media (min-width:1024px){
  .section{padding:72px 0;}
  .container{padding:0 32px;}
  .page-head-inner{padding:0 32px;}
}
@media (max-width:1023px){
  .sidebar{transform:translateX(-100%);transition:transform .2s var(--ease);box-shadow:var(--shadow-2);width:280px;}
  .sidebar.open{transform:translateX(0);}
  .main-area{margin-left:0;}
  .mobile-bar{display:flex;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .metrics{grid-template-columns:repeat(2,1fr);gap:1px;background:var(--line);}
  .metric{background:var(--card);}
  .metric + .metric{border-left:none;}
  .banner h1{font-size:34px;}
}
@media (max-width:900px){
  .zig-row,.zig-row.reverse{grid-template-columns:1fr;gap:26px;}
  .zig-media,.zig-row.reverse .zig-media{order:1;}
  .zig-body,.zig-row.reverse .zig-body{order:2;}
}
@media (max-width:767px){
  .section{padding:48px 0;}
  .banner h1{font-size:30px;}
  .banner-sub{font-size:16px;}
  .sec-head h2{font-size:24px;}
  .cta-band{padding:28px;}
  .cta-band h2{font-size:22px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
}
@media (max-width:640px){
  .metric{padding:22px 20px;}
  .metric-num{font-size:32px;}
  .note-band{flex-direction:column;padding:22px;gap:14px;}
  .faq-item{padding:20px;}
  .faq-item p{padding-left:0;}
  .dialog-mask{align-items:flex-end;padding:0;}
  .dialog{width:100%;border-radius:18px 18px 0 0;padding:24px 20px 28px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
  .faq-item:hover,.btn-primary:hover{transform:none;}
}

/* roulang page: category2 */
:root{
  --primary:#2751D6;
  --primary-dark:#1C3BA8;
  --primary-light:#EAF0FE;
  --primary-border:#C9D6F8;
  --accent:#E4713A;
  --accent-dark:#C95A26;
  --accent-light:#FDF0E8;
  --data:#0F9E8E;
  --bg:#F6F8FB;
  --card:#FFFFFF;
  --soft:#F9FAFC;
  --line:#E6EAF2;
  --text:#101828;
  --text-2:#5A6472;
  --text-3:#98A2B3;
  --r-card:16px;
  --r-btn:10px;
  --r-img:12px;
  --r-hero:20px;
  --shadow-sm:0 1px 2px rgba(16,24,40,.04), 0 10px 24px -14px rgba(16,24,40,.14);
  --shadow-md:0 2px 4px rgba(16,24,40,.05), 0 18px 36px -16px rgba(16,24,40,.20);
  --ease:cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer}
input,textarea,select{font:inherit}
h1,h2,h3,h4,p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
::selection{background:var(--primary-light);color:var(--primary-dark)}

/* ---------- 骨架 ---------- */
.shell{min-height:100vh}
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:232px;z-index:60;
  background:var(--card);border-right:1px solid var(--line);
  padding:22px 16px;display:flex;flex-direction:column;gap:6px;
  overflow-y:auto;
}
.sidebar::-webkit-scrollbar{width:6px}
.sidebar::-webkit-scrollbar-thumb{background:#DDE3EE;border-radius:999px}
.main{margin-left:232px;min-height:100vh;display:flex;flex-direction:column}
.main-inner{width:100%;max-width:1160px;margin:0 auto;padding:0 32px}
.page-bar{
  height:64px;display:flex;align-items:center;justify-content:space-between;
  gap:16px;border-bottom:1px solid var(--line);background:rgba(255,255,255,.7);
}
.page-bar .crumb{font-size:13px;color:var(--text-3)}
.page-bar .crumb a{color:var(--text-2)}
.page-bar .crumb a:hover{color:var(--primary)}
.page-bar .crumb .sep{margin:0 6px;color:#C6CEDC}
.page-bar .crumb .cur{color:var(--text-3)}

/* ---------- Logo ---------- */
.logo{display:flex;align-items:center;gap:10px;padding:4px 8px 4px 4px}
.logo-mark{
  width:28px;height:28px;flex:0 0 28px;border-radius:8px;
  background:var(--primary);color:#fff;display:grid;place-items:center;
  font-size:14px;font-weight:700;letter-spacing:.5px;
}
.logo-text{font-size:20px;font-weight:700;letter-spacing:.2px;color:var(--text);white-space:nowrap}

/* ---------- 导航 ---------- */
.nav-wrap{margin-top:24px}
.nav-item{
  position:relative;display:flex;align-items:center;gap:10px;
  height:44px;padding:0 14px;border-radius:var(--r-btn);
  color:var(--text-2);font-size:15px;transition:background .18s var(--ease),color .18s var(--ease);
}
.nav-item svg{flex:0 0 18px}
.nav-item:hover{background:var(--bg);color:var(--text)}
.nav-item.active{background:var(--primary-light);color:var(--primary);font-weight:600}
.nav-item.active::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:22px;border-radius:0 3px 3px 0;background:var(--primary);
}
.side-sep{height:1px;background:var(--line);margin:18px 8px}
.side-sub{display:flex;flex-direction:column;gap:2px}
.side-sub a{
  font-size:14px;color:var(--text-2);padding:9px 14px;border-radius:10px;
  transition:background .18s var(--ease),color .18s var(--ease);
}
.side-sub a:hover{background:var(--bg);color:var(--primary)}
.side-foot{margin-top:auto;padding-top:20px;display:flex;flex-direction:column;gap:10px}
.side-foot .tip{font-size:12.5px;line-height:1.7;color:var(--text-3);padding:0 6px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:12px 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:transform .18s var(--ease),background .18s var(--ease),box-shadow .18s var(--ease),color .18s var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 8px 18px -10px rgba(39,81,214,.75)}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-1px);box-shadow:0 14px 26px -12px rgba(39,81,214,.8)}
.btn-primary:active{transform:translateY(1px);box-shadow:none}
.btn-ghost{background:#fff;color:var(--primary);border-color:var(--primary-border)}
.btn-ghost:hover{background:var(--primary-light)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:var(--accent-dark);transform:translateY(-1px)}
.btn-sm{min-height:38px;padding:8px 16px;font-size:14px}
.btn-link{color:var(--primary);font-weight:600;font-size:14.5px;display:inline-flex;align-items:center;gap:6px;position:relative}
.btn-link::after{
  content:"";position:absolute;left:0;bottom:-3px;height:2px;width:0;background:var(--primary);
  transition:width .18s var(--ease);
}
.btn-link:hover::after{width:100%}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--primary-light);color:var(--primary);
  font-size:11.5px;font-weight:600;padding:3px 10px;border-radius:999px;
}
.badge-accent{background:var(--accent-light);color:var(--accent-dark)}
.badge-data{background:#E6F6F4;color:#0B7A6D}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;border-radius:var(--r-hero);
  background-color:var(--soft);
  background-image:linear-gradient(105deg,rgba(234,240,254,.94) 0%,rgba(246,248,251,.86) 48%,rgba(249,250,252,.72) 100%),url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  border:1px solid var(--line);
  margin-top:28px;
}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:40px;align-items:center;padding:44px}
.hero h1{font-size:clamp(26px,3.4vw,42px);line-height:1.25;font-weight:700;letter-spacing:-.5px}
.hero .sub{margin-top:16px;font-size:16px;color:var(--text-2);line-height:1.8;max-width:52ch}
.hero .actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-trust{display:flex;flex-wrap:wrap;gap:18px;margin-top:26px;padding-top:20px;border-top:1px dashed #D8E0EE}
.hero-trust span{display:inline-flex;align-items:center;gap:7px;font-size:13px;color:var(--text-2)}
.dot{width:7px;height:7px;border-radius:50%;background:var(--data);display:inline-block}
.index-card{
  background:rgba(255,255,255,.92);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--shadow-sm);backdrop-filter:blur(4px);
}
.index-card h2{font-size:15px;font-weight:700;margin-bottom:14px}
.index-card li{display:flex;gap:10px;align-items:flex-start;font-size:13.5px;color:var(--text-2);padding:7px 0}
.idx{font-size:12px;font-weight:700;color:var(--primary);background:var(--primary-light);border-radius:6px;padding:1px 7px;flex:0 0 auto;font-variant-numeric:tabular-nums}

/* ---------- 通用板块 ---------- */
.section{padding:64px 0 0}
.section:last-of-type{padding-bottom:72px}
.section-head{max-width:760px}
.section-head h2{font-size:clamp(22px,2.4vw,30px);font-weight:700;line-height:1.3;letter-spacing:-.3px}
.section-head p{margin-top:12px;color:var(--text-2);font-size:15.5px}
.eyebrow{font-size:12.5px;font-weight:700;letter-spacing:1.6px;color:var(--primary);text-transform:uppercase;margin-bottom:10px;display:flex;align-items:center;gap:10px}
.eyebrow::before{content:"";width:26px;height:2px;background:var(--primary);border-radius:2px}

/* ---------- 引言 ---------- */
.intro{display:grid;grid-template-columns:7fr 5fr;gap:36px;align-items:center;margin-top:8px}
.intro p{color:var(--text-2);font-size:16.5px;line-height:1.85}
.intro p + p{margin-top:14px}
.intro figure{margin:0}
.intro img{border-radius:var(--r-card);box-shadow:var(--shadow-sm);border:1px solid var(--line);aspect-ratio:4/3;object-fit:cover;width:100%}
.intro figcaption{font-size:12.5px;color:var(--text-3);margin-top:10px;text-align:center}

/* ---------- 编号路径 ---------- */
.steps{position:relative;margin-top:38px}
.steps::before{
  content:"";position:absolute;left:21px;top:16px;bottom:30px;width:2px;
  background:linear-gradient(to bottom,var(--primary-border),var(--line));
}
.step{position:relative;padding-left:76px;padding-bottom:26px}
.step:last-child{padding-bottom:0}
.step-num{
  position:absolute;left:0;top:0;width:44px;height:44px;border-radius:12px;
  background:var(--card);border:1px solid var(--primary-border);color:var(--primary);
  display:grid;place-items:center;font-weight:700;font-size:15px;
  box-shadow:var(--shadow-sm);font-variant-numeric:tabular-nums;
}
.step-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--shadow-sm);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.step-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}
.step-card h3{font-size:20px;font-weight:600;line-height:1.4}
.step-card p{margin-top:10px;color:var(--text-2);font-size:15.5px}
.step-points{margin-top:16px;display:grid;gap:9px}
.step-points li{position:relative;padding-left:20px;font-size:14.5px;color:var(--text-2)}
.step-points li::before{
  content:"";position:absolute;left:0;top:10px;width:7px;height:7px;border-radius:2px;
  background:var(--primary-border);border:1px solid var(--primary);
}
.step-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}

/* ---------- 风险信号 ---------- */
.signal-list{margin-top:34px;display:grid;gap:14px}
.signal{
  display:flex;gap:16px;align-items:flex-start;
  background:var(--card);border:1px solid var(--line);border-left:3px solid var(--accent);
  border-radius:14px;padding:20px 24px;box-shadow:var(--shadow-sm);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.signal:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}
.signal .ico{
  width:36px;height:36px;flex:0 0 36px;border-radius:10px;background:var(--accent-light);
  color:var(--accent-dark);display:grid;place-items:center;font-weight:700;font-size:14px;
}
.signal h3{font-size:17px;font-weight:600}
.signal p{margin-top:6px;color:var(--text-2);font-size:14.5px}

/* ---------- 适用场景 ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;margin-top:34px}
.scene{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px;box-shadow:var(--shadow-sm);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.scene:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}
.scene .scene-ico{
  width:40px;height:40px;border-radius:12px;background:var(--primary-light);color:var(--primary);
  display:grid;place-items:center;margin-bottom:16px;
}
.scene h3{font-size:18px;font-weight:600}
.scene p{margin-top:9px;color:var(--text-2);font-size:14.5px}

/* ---------- 数据带 ---------- */
.stats{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-sm);display:grid;grid-template-columns:repeat(3,1fr);
  padding:28px 0;margin-top:34px;
}
.stat{text-align:center;padding:0 20px;border-left:1px solid var(--line)}
.stat:first-child{border-left:0}
.stat-num{
  font-size:clamp(28px,3.2vw,40px);font-weight:700;line-height:1.1;
  font-variant-numeric:tabular-nums;color:var(--primary);letter-spacing:-1px;
}
.stat:nth-child(2) .stat-num{color:var(--data)}
.stat:nth-child(3) .stat-num{color:var(--accent-dark)}
.stat-label{font-size:13px;color:var(--text-2);margin-top:8px}

/* ---------- FAQ ---------- */
.faq-list{margin-top:32px;display:grid;gap:12px;max-width:880px}
.faq-item{background:var(--card);border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:box-shadow .2s var(--ease)}
.faq-item:hover{box-shadow:var(--shadow-sm)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 24px;font-size:16.5px;font-weight:600;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  transition:color .18s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--primary)}
.faq-item[open] summary{color:var(--primary)}
.faq-arrow{
  flex:0 0 22px;width:22px;height:22px;border-radius:50%;background:var(--primary-light);
  color:var(--primary);display:grid;place-items:center;transition:transform .18s var(--ease);
}
.faq-item[open] .faq-arrow{transform:rotate(180deg)}
.faq-body{padding:0 24px 22px;color:var(--text-2);font-size:15px;line-height:1.8;border-top:1px solid var(--line);padding-top:18px;margin:0 24px 22px;padding-left:0;padding-right:0}

/* ---------- CTA ---------- */
.cta-band{
  margin-top:40px;border-radius:var(--r-hero);border:1px solid var(--primary-border);
  background:linear-gradient(120deg,#EAF0FE 0%,#F9FAFC 62%,#FDF0E8 100%);
  padding:40px;display:grid;grid-template-columns:7fr 5fr;gap:32px;align-items:center;
}
.cta-band h2{font-size:clamp(21px,2.2vw,28px);font-weight:700;line-height:1.35}
.cta-band p{margin-top:12px;color:var(--text-2);font-size:15.5px}
.cta-actions{display:flex;flex-direction:column;gap:12px;align-items:flex-start}
.cta-actions .hint{font-size:12.5px;color:var(--text-3)}

/* ---------- 弹层 ---------- */
[hidden]{display:none !important}
.modal{
  position:fixed;inset:0;z-index:120;display:flex;align-items:center;justify-content:center;
  background:rgba(16,24,40,.45);padding:20px;
}
.modal-card{
  width:480px;max-width:100%;background:#fff;border-radius:18px;padding:28px;
  box-shadow:0 24px 60px -18px rgba(16,24,40,.4);position:relative;
  animation:pop .2s var(--ease);
}
@keyframes pop{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}
.modal-close{
  position:absolute;top:16px;right:16px;width:40px;height:40px;border-radius:50%;
  border:1px solid var(--line);background:#fff;color:var(--text-2);display:grid;place-items:center;
  transition:background .18s var(--ease),color .18s var(--ease);
}
.modal-close:hover{background:var(--bg);color:var(--text)}
.modal-card h2{font-size:20px;font-weight:700;padding-right:44px}
.modal-card .modal-sub{margin-top:8px;font-size:13.5px;color:var(--text-2)}
.form-grid{margin-top:20px;display:grid;gap:14px}
.field label{display:block;font-size:13.5px;font-weight:600;margin-bottom:6px}
.field input,.field textarea{
  width:100%;min-height:44px;padding:11px 14px;border-radius:var(--r-btn);
  border:1px solid var(--line);background:#fff;color:var(--text);font-size:14.5px;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.field textarea{min-height:88px;resize:vertical}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(39,81,214,.14);
}
.agree{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--text-2)}
.agree input{width:18px;height:18px;margin-top:2px;accent-color:var(--primary)}
.form-note{font-size:13px;color:var(--data);margin-top:4px}

/* ---------- 页脚 ---------- */
.footer{background:var(--card);border-top:1px solid var(--line);padding:56px 0 24px;margin-top:72px}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:32px}
.footer-about{margin-top:14px;font-size:13.5px;color:var(--text-2);line-height:1.8;max-width:34ch}
.footer h4{font-size:15px;font-weight:600;margin-bottom:14px}
.footer-links a{display:block;font-size:14px;color:var(--text-2);padding:6px 0;transition:color .18s var(--ease),transform .18s var(--ease)}
.footer-links a:hover{color:var(--primary);transform:translateX(2px)}
.footer-bottom{
  margin-top:40px;border-top:1px solid var(--line);padding-top:20px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}

/* ---------- 移动端顶栏 ---------- */
.topbar{
  display:none;position:sticky;top:0;z-index:70;height:56px;
  background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);
  align-items:center;gap:12px;padding:0 16px;backdrop-filter:blur(6px);
}
.hamburger{
  width:44px;height:44px;border-radius:10px;border:1px solid var(--line);
  background:#fff;display:grid;place-items:center;color:var(--text);
}
.hamburger:hover{background:var(--bg)}
.scrim{
  position:fixed;inset:0;background:rgba(16,24,40,.45);z-index:59;opacity:0;
  pointer-events:none;transition:opacity .2s var(--ease);
}
.scrim.show{opacity:1;pointer-events:auto}

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

/* ---------- 响应式 ---------- */
@media (max-width:1180px){
  .hero-grid{padding:36px;gap:30px}
  .cta-band{padding:32px}
}
@media (max-width:1023px){
  .sidebar{
    transform:translateX(-100%);transition:transform .2s var(--ease);
    width:280px;box-shadow:var(--shadow-md);
  }
  .sidebar.open{transform:none}
  .main{margin-left:0}
  .topbar{display:flex}
  .page-bar{height:auto;padding:14px 0;border-bottom:0}
  .main-inner{padding:0 20px}
  .hero-grid{grid-template-columns:1fr;}
  .intro{grid-template-columns:1fr}
  .intro figure{order:-1}
  .cta-band{grid-template-columns:1fr}
  .scene-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .section{padding-top:48px}
}
@media (max-width:640px){
  .hero-grid{padding:24px}
  .hero .sub{font-size:15px}
  .stats{grid-template-columns:1fr;padding:8px 0}
  .stat{border-left:0;border-top:1px solid var(--line);padding:18px 20px}
  .stat:first-child{border-top:0}
  .steps::before{left:17px;top:14px;bottom:26px}
  .step{padding-left:56px}
  .step-num{width:36px;height:36px;font-size:13.5px;border-radius:10px}
  .step-card{padding:20px}
  .step-card h3{font-size:18px}
  .signal{padding:18px}
  .scene{padding:20px}
  .cta-band{padding:24px}
  .footer{padding:44px 0 20px}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .footer-bottom{flex-direction:column;gap:6px}
  .modal{align-items:flex-end;padding:0}
  .modal-card{width:100%;border-radius:18px 18px 0 0;padding:24px}
  .main-inner{padding:0 16px}
}

/* roulang page: category3 */
:root{
  --primary:#2751D6;
  --primary-dark:#1C3BA8;
  --primary-light:#EAF0FE;
  --primary-line:#C9D6F8;
  --accent:#E4713A;
  --accent-dark:#C95A26;
  --accent-light:#FDF0E8;
  --data:#0F9E8E;
  --data-light:#E6F6F4;
  --bg:#F6F8FB;
  --card:#FFFFFF;
  --soft:#F9FAFC;
  --line:#E6EAF2;
  --text:#101828;
  --text-2:#5A6472;
  --text-3:#98A2B3;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:12px;
  --radius-hero:20px;
  --shadow-1:0 1px 2px rgba(16,24,40,.04), 0 10px 24px -14px rgba(16,24,40,.14);
  --shadow-2:0 2px 4px rgba(16,24,40,.05), 0 18px 36px -16px rgba(16,24,40,.20);
  --sidebar-w:232px;
  --ease:cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
html body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
.num{font-variant-numeric:tabular-nums}

/* 布局骨架 */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
  background:#fff;border-right:1px solid var(--line);
  display:flex;flex-direction:column;gap:18px;
  padding:20px 14px;z-index:80;overflow-y:auto;
}
.main-area{margin-left:var(--sidebar-w);min-height:100vh;display:flex;flex-direction:column}
.container{width:100%;max-width:1160px;margin:0 auto;padding:0 32px}
.main-content{flex:1 1 auto}

/* Logo */
.logo{display:flex;align-items:center;gap:10px;padding:0 6px}
.logo-mark{
  width:28px;height:28px;flex:none;border-radius:8px;background:var(--primary);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;line-height:1;
}
.logo-text{font-size:20px;font-weight:700;letter-spacing:-.01em;white-space:nowrap}

/* 侧栏导航 */
.nav-item{
  position:relative;display:flex;align-items:center;gap:10px;
  height:44px;padding:0 14px;border-radius:10px;
  color:var(--text-2);font-size:15px;line-height:1;
  transition:background-color .2s var(--ease),color .2s var(--ease);
}
.nav-item svg{flex:none;opacity:.9}
.nav-item:hover{background:var(--bg);color:var(--text)}
.nav-item.active{background:var(--primary-light);color:var(--primary);font-weight:600}
.nav-item.active::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:22px;border-radius:0 3px 3px 0;background:var(--primary);
}
.sidebar-divider{height:1px;background:var(--line);margin:2px 6px}
.side-title{font-size:12px;font-weight:700;color:var(--text-3);letter-spacing:.08em;padding:0 14px}
.sidebar-foot{
  margin-top:auto;padding:16px;border:1px solid var(--line);border-radius:14px;background:var(--soft);
  display:flex;flex-direction:column;gap:10px;
}
.sidebar-foot p{font-size:13px;color:var(--text-2);line-height:1.7}
.sidebar-foot strong{font-size:14px;font-weight:700;color:var(--text)}

/* 顶栏 */
.topbar{
  height:64px;flex:none;display:flex;align-items:center;gap:16px;
  padding:0 32px;background:var(--bg);border-bottom:1px solid var(--line);
}
.crumbs{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);min-width:0}
.crumbs a{color:var(--text-2)}
.crumbs a:hover{color:var(--primary)}
.crumbs .sep{color:var(--text-3)}
.topbar-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.mobile-logo{display:none;align-items:center;gap:8px}
.hamburger{
  display:none;width:44px;height:44px;flex:none;align-items:center;justify-content:center;
  background:#fff;border:1px solid var(--line);border-radius:10px;cursor:pointer;
}
.hamburger:hover{background:var(--primary-light);border-color:var(--primary-line)}
.nav-mask{
  position:fixed;inset:0;background:rgba(16,24,40,.45);
  opacity:0;visibility:hidden;transition:opacity .2s var(--ease),visibility .2s var(--ease);z-index:75;
}
.nav-mask.show{opacity:1;visibility:visible}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:12px 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;cursor:pointer;
  transition:transform .2s var(--ease),background-color .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 8px 18px -10px rgba(39,81,214,.65)}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-1px);box-shadow:0 14px 26px -12px rgba(39,81,214,.6)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-ghost{background:#fff;border-color:var(--primary-line);color:var(--primary)}
.btn-ghost:hover{background:var(--primary-light)}
.btn-sm{min-height:40px;padding:8px 16px;font-size:14px}
.btn-block{width:100%}
.link-more{
  position:relative;display:inline-flex;align-items:center;gap:6px;
  color:var(--primary);font-size:15px;font-weight:600;
}
.link-more::after{
  content:"";position:absolute;left:0;bottom:-3px;height:2px;width:0;background:currentColor;
  transition:width .18s var(--ease);
}
.link-more:hover::after{width:calc(100% - 20px)}

/* 标签 */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;padding:3px 10px;border-radius:999px;
  background:var(--primary-light);color:var(--primary);
}
.tag-accent{background:var(--accent-light);color:var(--accent-dark)}
.tag-data{background:var(--data-light);color:#0B7A6E}

/* 页面头部 */
.page-head{
  background:linear-gradient(180deg,#FFFFFF 0%,var(--soft) 100%);
  border-bottom:1px solid var(--line);
  padding:52px 0 60px;
}
.head-grid{display:grid;grid-template-columns:1.35fr .95fr;gap:48px;align-items:center}
.brand-line{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.brand-name{font-size:16px;font-weight:700}
.brand-sep{width:1px;height:16px;background:var(--line)}
.page-title{font-size:46px;line-height:1.25;font-weight:700;letter-spacing:-.02em;margin-top:18px}
.lead{margin-top:18px;font-size:17px;line-height:1.85;color:var(--text-2);max-width:660px}
.head-points{display:flex;flex-wrap:wrap;gap:12px 20px;margin-top:24px}
.head-points span{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--text-2)}
.head-points svg{color:var(--data);flex:none}
.head-media{position:relative;border-radius:var(--radius-hero);overflow:hidden;box-shadow:var(--shadow-1);border:1px solid var(--line)}
.head-media img{width:100%;height:340px;object-fit:cover}
.head-media::after{content:"";position:absolute;inset:0;background:rgba(39,81,214,.06);pointer-events:none}

/* 板块 */
.section{padding:72px 0}
.section-soft{background:var(--soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:32px}
.section-head h2{font-size:32px;line-height:1.25;font-weight:700;letter-spacing:-.01em;margin-top:12px}
.section-head p{margin-top:14px;font-size:16px;line-height:1.8;color:var(--text-2)}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:13px;font-weight:700;color:var(--primary);letter-spacing:.04em}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--primary);border-radius:2px}

/* 步骤条 */
.stepbar{
  display:grid;grid-template-columns:repeat(3,1fr);
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);overflow:hidden;
}
.step{padding:26px 24px;border-right:1px solid var(--line);position:relative;transition:background-color .2s var(--ease)}
.step:last-child{border-right:0}
.step:hover{background:var(--soft)}
.step-no{
  width:28px;height:28px;border-radius:8px;background:var(--primary-light);color:var(--primary);
  display:grid;place-items:center;font-size:13px;font-weight:700;margin-bottom:14px;
}
.step h3{font-size:17px;font-weight:600;margin-bottom:8px}
.step p{font-size:14px;line-height:1.72;color:var(--text-2)}

/* 对照组 */
.group + .group{margin-top:44px}
.group-title{font-size:20px;font-weight:600;display:flex;align-items:center;gap:10px}
.group-title .dot{width:8px;height:8px;border-radius:2px;background:var(--accent);flex:none}
.group-desc{margin:8px 0 18px;font-size:15px;color:var(--text-2);line-height:1.75}
.compare{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);overflow:hidden;
}
.compare-head{display:grid;grid-template-columns:1fr 1.15fr 1.25fr;background:#EEF2FB}
.compare-head div{padding:14px 20px;font-size:13px;font-weight:700;color:var(--primary-dark)}
.compare-row{display:grid;grid-template-columns:1fr 1.15fr 1.25fr;border-top:1px solid var(--line);transition:background-color .18s var(--ease)}
.compare-row:nth-child(even){background:var(--soft)}
.compare-row:hover{background:var(--primary-light)}
.compare-row div{padding:18px 20px;font-size:15px;line-height:1.72;color:var(--text-2)}
.compare-row div:first-child{color:var(--text);font-weight:600}

/* 提示卡 */
.notice{
  display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-top:36px;
}
.notice-card{
  background:#fff;border:1px solid var(--line);border-left:4px solid var(--accent);
  border-radius:var(--radius-card);padding:22px 24px;box-shadow:var(--shadow-1);
}
.notice-card h4{font-size:16px;font-weight:700;margin-bottom:8px}
.notice-card p{font-size:14px;line-height:1.75;color:var(--text-2)}

/* FAQ */
.faq-list{display:flex;flex-direction:column;gap:12px}
details.faq{
  background:#fff;border:1px solid var(--line);border-radius:14px;
  box-shadow:var(--shadow-1);transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
details.faq[open]{border-left:3px solid var(--primary);border-color:var(--primary-line);box-shadow:var(--shadow-2)}
details.faq summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;font-size:17px;font-weight:600;min-height:44px;
}
details.faq summary::-webkit-details-marker{display:none}
.faq-icon{flex:none;color:var(--text-3);transition:transform .18s var(--ease),color .18s var(--ease)}
details.faq[open] .faq-icon{transform:rotate(180deg);color:var(--primary)}
.faq-body{padding:0 24px 22px;font-size:15px;line-height:1.85;color:var(--text-2);border-top:1px solid var(--line);padding-top:16px}

/* CTA */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--radius-hero);
  border:1px solid var(--line);background:#fff;box-shadow:var(--shadow-1);
}
.cta-band .bgimg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.16}
.cta-inner{position:relative;display:grid;grid-template-columns:1.4fr .9fr;gap:32px;padding:44px;align-items:center}
.cta-inner h2{font-size:28px;line-height:1.3;font-weight:700}
.cta-inner p{margin-top:12px;font-size:15px;line-height:1.8;color:var(--text-2);max-width:560px}
.cta-actions{display:flex;flex-direction:column;gap:12px;align-items:flex-start}
.cta-note{font-size:13px;color:var(--text-3)}
.privacy-box{
  margin-top:28px;background:var(--soft);border:1px solid var(--line);border-radius:12px;
  padding:16px 20px;font-size:13px;line-height:1.8;color:var(--text-2);
}
.privacy-box span{display:block}
.privacy-box span + span{margin-top:4px}

/* 页脚 */
.footer{background:#fff;border-top:1px solid var(--line);margin-top:72px;padding-top:56px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}
.footer h4{font-size:14px;font-weight:700;margin-bottom:14px}
.footer-about{margin-top:14px;font-size:14px;line-height:1.8;color:var(--text-2);max-width:330px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:var(--text-2);transition:color .18s var(--ease)}
.footer-links a:hover{color:var(--primary)}
.footer-bottom{
  display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;
  border-top:1px solid var(--line);margin-top:40px;padding:20px 0;font-size:13px;color:var(--text-3);
}

/* 弹层与表单 */
.dialog-mask{
  position:fixed;inset:0;z-index:200;background:rgba(16,24,40,.45);
  display:none;align-items:center;justify-content:center;padding:24px;
}
.dialog-mask.show{display:flex}
.dialog{
  position:relative;width:100%;max-width:480px;background:#fff;border-radius:18px;
  padding:28px;box-shadow:0 30px 60px -20px rgba(16,24,40,.45);
}
.dialog h3{font-size:20px;font-weight:700}
.dialog .dialog-desc{margin-top:8px;font-size:14px;line-height:1.75;color:var(--text-2)}
.dialog-close{
  position:absolute;top:14px;right:14px;width:40px;height:40px;border-radius:50%;
  background:#fff;border:1px solid var(--line);display:grid;place-items:center;cursor:pointer;
  transition:background-color .18s var(--ease);
}
.dialog-close:hover{background:var(--soft)}
.dialog form{margin-top:20px}
.field{display:flex;flex-direction:column;gap:8px;margin-bottom:16px}
.field label{font-size:14px;font-weight:600}
.field input,.field textarea{
  width:100%;min-height:44px;padding:10px 14px;font-size:15px;
  border:1px solid var(--line);border-radius:var(--radius-btn);background:#fff;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.field textarea{min-height:96px;resize:vertical;line-height:1.7}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-light)}
.checkbox-row{display:flex;align-items:flex-start;gap:10px;font-size:13px;line-height:1.7;color:var(--text-2)}
.checkbox-row input{width:18px;height:18px;flex:none;margin-top:2px;accent-color:var(--primary)}
.form-tip{margin-top:14px;font-size:13px;color:var(--data);display:none}
.form-tip.show{display:block}

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

/* 响应式 */
@media (max-width:1023px){
  .sidebar{
    width:280px;transform:translateX(-100%);box-shadow:var(--shadow-2);
    transition:transform .2s var(--ease);
  }
  .sidebar.open{transform:none}
  .main-area{margin-left:0}
  .topbar{height:56px;padding:0 16px}
  .hamburger{display:inline-flex}
  .mobile-logo{display:inline-flex}
  .mobile-logo .logo-text{font-size:16px}
  .crumbs{display:none}
  .section{padding:48px 0}
}
@media (max-width:900px){
  .head-grid{grid-template-columns:1fr;gap:28px}
  .head-media img{height:240px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .cta-inner{grid-template-columns:1fr;padding:32px}
}
@media (max-width:768px){
  .compare-head{display:none}
  .compare-row{grid-template-columns:1fr}
  .compare-row div{padding:6px 18px;font-size:14.5px}
  .compare-row div::before{
    content:attr(data-label);display:block;font-size:12px;font-weight:700;
    color:var(--text-3);margin-bottom:2px;
  }
  .compare-row div:first-child{padding-top:16px;font-size:16px}
  .compare-row div:last-child{padding-bottom:18px}
  .notice{grid-template-columns:1fr}
  .stepbar{grid-template-columns:1fr}
  .step{border-right:0;border-bottom:1px solid var(--line)}
  .step:last-child{border-bottom:0}
}
@media (max-width:640px){
  .container{padding:0 16px}
  .page-head{padding:36px 0 44px}
  .page-title{font-size:30px}
  .lead{font-size:16px}
  .section-head h2{font-size:24px}
  .section-head p{font-size:15px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  details.faq summary{font-size:15.5px;padding:18px 18px}
  .faq-body{padding:14px 18px 20px}
  .cta-inner h2{font-size:22px}
}
@media (max-width:520px){
  .topbar-actions .btn{display:none}
  .dialog-mask{align-items:flex-end;padding:0}
  .dialog{max-width:100%;border-radius:18px 18px 0 0;padding:24px 20px 32px;max-height:92vh;overflow-y:auto}
}

/* roulang page: category4 */
:root{
    --primary:#2751D6;
    --primary-dark:#1C3BA8;
    --primary-light:#EAF0FE;
    --primary-border:#C9D6F8;
    --accent:#E4713A;
    --accent-dark:#C95A26;
    --accent-light:#FDF0E8;
    --data:#0F9E8E;
    --bg:#F6F8FB;
    --card:#FFFFFF;
    --soft:#F9FAFC;
    --line:#E6EAF2;
    --text:#101828;
    --text-sub:#5A6472;
    --text-weak:#98A2B3;
    --radius-card:16px;
    --radius-btn:10px;
    --radius-img:12px;
    --radius-hero:20px;
    --shadow-sm:0 1px 2px rgba(16,24,40,.04),0 10px 24px -14px rgba(16,24,40,.14);
    --shadow-md:0 2px 4px rgba(16,24,40,.05),0 18px 36px -16px rgba(16,24,40,.20);
    --shadow-lg:0 8px 16px rgba(16,24,40,.06),0 28px 56px -20px rgba(16,24,40,.28);
    --ease:cubic-bezier(.4,0,.2,1);
    --sidebar-w:232px;
  }

  *,*::before,*::after{box-sizing:border-box}

  html{-webkit-text-size-adjust:100%}

  body{
    margin:0;
    background:var(--bg);
    color:var(--text);
    font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
    font-size:16px;
    line-height:1.75;
    -webkit-font-smoothing:antialiased;
    -moz-osx-font-smoothing:grayscale;
  }

  a{color:inherit;text-decoration:none}
  img{max-width:100%;display:block;height:auto}
  button,input,textarea{font:inherit;color:inherit}
  button{cursor:pointer;border:0;background:none;padding:0}
  ul,ol{margin:0;padding:0;list-style:none}
  p{margin:0}

  h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:700;letter-spacing:-.01em}
  .num{font-variant-numeric:tabular-nums}

  :focus-visible{outline:2px solid var(--primary);outline-offset:2px}

  /* ============ 布局骨架 ============ */
  .app-shell{min-height:100vh}

  .sidebar{
    position:fixed;
    top:0;left:0;bottom:0;
    width:var(--sidebar-w);
    background:#fff;
    border-right:1px solid var(--line);
    z-index:60;
    transition:transform .2s var(--ease);
  }
  .sidebar-inner{display:flex;flex-direction:column;height:100%;padding:20px 16px}
  .sidebar-nav{flex:1;overflow-y:auto;overflow-x:hidden;margin-top:24px}
  .sidebar-foot{border-top:1px solid var(--line);padding-top:16px;margin-top:16px}

  .main-area{
    margin-left:var(--sidebar-w);
    display:flex;
    flex-direction:column;
    min-height:100vh;
  }

  .container{
    width:100%;
    max-width:1160px;
    margin:0 auto;
    padding:0 32px;
  }

  /* ============ Logo ============ */
  .logo{display:inline-flex;align-items:center;gap:10px;padding:2px 4px;border-radius:12px}
  .logo-mark{
    width:28px;height:28px;border-radius:8px;
    background:var(--primary);color:#fff;
    display:inline-flex;align-items:center;justify-content:center;
    font-size:14px;font-weight:700;letter-spacing:0;
    flex:0 0 28px;
  }
  .logo-text{font-size:19px;font-weight:700;color:var(--text);letter-spacing:-.01em;white-space:nowrap}
  .logo:hover .logo-text{color:var(--primary)}

  /* ============ 侧栏导航 ============ */
  .nav-item{
    position:relative;
    display:flex;align-items:center;gap:10px;
    height:44px;padding:0 14px;
    border-radius:10px;
    color:var(--text-sub);
    font-size:14.5px;font-weight:500;
    margin-bottom:4px;
    transition:background .18s var(--ease),color .18s var(--ease);
  }
  .nav-item svg{flex:0 0 18px}
  .nav-item:hover{background:var(--bg);color:var(--text)}
  .nav-item.active{background:var(--primary-light);color:var(--primary);font-weight:600}
  .nav-item.active::before{
    content:"";
    position:absolute;left:0;top:50%;transform:translateY(-50%);
    width:3px;height:20px;border-radius:0 3px 3px 0;background:var(--primary);
  }

  .sidebar-note{
    font-size:12.5px;line-height:1.7;color:var(--text-weak);margin-top:12px;
  }

  /* ============ 顶部条 ============ */
  .topbar{
    height:64px;
    display:flex;align-items:center;gap:16px;
    padding:0 32px;
    background:#fff;
    border-bottom:1px solid var(--line);
  }
  .hamburger{
    display:none;
    width:44px;height:44px;
    align-items:center;justify-content:center;
    border-radius:10px;color:var(--text-sub);
    transition:background .18s var(--ease),color .18s var(--ease);
  }
  .hamburger:hover{background:var(--bg);color:var(--primary)}

  .crumb{
    display:flex;align-items:center;gap:8px;
    font-size:13px;color:var(--text-weak);
    margin-right:auto;min-width:0;
  }
  .crumb a{color:var(--text-sub);transition:color .18s var(--ease)}
  .crumb a:hover{color:var(--primary)}
  .crumb .sep{color:#CBD3E1}
  .crumb .current{color:var(--text-weak);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

  /* ============ 按钮 ============ */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    min-height:44px;padding:12px 24px;
    border-radius:var(--radius-btn);
    font-size:15px;font-weight:600;
    border:1px solid transparent;
    transition:background .18s var(--ease),color .18s var(--ease),box-shadow .18s var(--ease),transform .18s var(--ease),border-color .18s var(--ease);
    white-space:nowrap;
  }
  .btn-primary{background:var(--primary);color:#fff}
  .btn-primary:hover{background:var(--primary-dark);transform:translateY(-1px);box-shadow:0 12px 24px -12px rgba(39,81,214,.7)}
  .btn-primary:active{transform:translateY(1px);box-shadow:none}

  .btn-ghost{background:#fff;color:var(--primary);border-color:var(--primary-border)}
  .btn-ghost:hover{background:var(--primary-light);border-color:var(--primary)}
  .btn-ghost:active{transform:translateY(1px)}

  .btn-sm{min-height:38px;padding:8px 16px;font-size:13.5px;border-radius:9px}
  .btn-block{width:100%}

  .link-arrow{
    display:inline-flex;align-items:center;gap:6px;
    color:var(--primary);font-size:14px;font-weight:600;
    min-height:44px;
  }
  .link-arrow svg{transition:transform .18s var(--ease)}
  .link-arrow:hover svg{transform:translateX(3px)}

  .text-link{
    position:relative;color:var(--primary);font-weight:600;
    padding-bottom:2px;
  }
  .text-link::after{
    content:"";position:absolute;left:0;bottom:0;height:1.5px;width:0;
    background:var(--primary);transition:width .18s var(--ease);
  }
  .text-link:hover::after{width:100%}

  /* ============ 徽章 / 标签 ============ */
  .badge{
    display:inline-flex;align-items:center;gap:6px;
    padding:4px 12px;border-radius:999px;
    background:var(--primary-light);color:var(--primary);
    font-size:12px;font-weight:600;line-height:1.6;
  }
  .badge-accent{background:var(--accent-light);color:var(--accent-dark)}
  .badge-data{background:#E7F6F4;color:#0B7C70}

  .tag-list{display:flex;flex-wrap:wrap;gap:8px}
  .tag{
    display:inline-flex;align-items:center;
    padding:6px 12px;border-radius:999px;
    background:#fff;border:1px solid var(--line);
    font-size:13px;color:var(--text-sub);
  }

  /* ============ 板块 ============ */
  .section{padding:88px 0}
  .section-soft{background:var(--soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

  .section-head{max-width:760px;margin-bottom:40px}
  .section-head h2{font-size:32px;margin-bottom:14px}
  .section-head p{color:var(--text-sub);font-size:16px}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:13px;font-weight:600;color:var(--primary);
    margin-bottom:12px;
  }
  .eyebrow::before{content:"";width:18px;height:2px;border-radius:2px;background:var(--primary)}

  /* ============ Hero ============ */
  .hero{
    position:relative;
    background-image:linear-gradient(105deg,rgba(246,248,251,.96) 0%,rgba(246,248,251,.86) 45%,rgba(234,240,254,.78) 100%),url('/assets/images/backpic/back-2.webp');
    background-size:cover;
    background-position:center;
    border-bottom:1px solid var(--line);
  }
  .hero-grid{
    display:grid;grid-template-columns:1.05fr .95fr;
    gap:56px;align-items:center;
    padding:76px 0 72px;
  }
  .hero h1{font-size:46px;margin:16px 0 18px;letter-spacing:-.02em}
  .hero-sub{font-size:17px;color:var(--text-sub);max-width:560px}
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
  .hero-tags{margin-top:28px;display:flex;flex-wrap:wrap;gap:8px}
  .hero-media{position:relative}
  .hero-media img{
    border-radius:var(--radius-hero);
    box-shadow:var(--shadow-md);
    aspect-ratio:4/3;object-fit:cover;width:100%;
  }
  .hero-media::after{
    content:"";position:absolute;inset:0;border-radius:var(--radius-hero);
    background:rgba(39,81,214,.06);pointer-events:none;
  }
  .hero-chip{
    position:absolute;left:-18px;bottom:24px;
    background:#fff;border-radius:14px;padding:12px 18px;
    box-shadow:var(--shadow-md);border:1px solid var(--line);
    display:flex;align-items:center;gap:12px;
  }
  .hero-chip .dot{
    width:34px;height:34px;border-radius:10px;background:#E7F6F4;color:#0B7C70;
    display:flex;align-items:center;justify-content:center;flex:0 0 34px;
  }
  .hero-chip strong{display:block;font-size:14px;line-height:1.4}
  .hero-chip span{font-size:12.5px;color:var(--text-weak);line-height:1.4}

  /* ============ 要点带 ============ */
  .facts{
    display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
    box-shadow:var(--shadow-sm);overflow:hidden;
  }
  .fact{padding:24px;border-right:1px solid var(--line)}
  .fact:last-child{border-right:0}
  .fact .fact-no{
    font-size:13px;font-weight:700;color:var(--accent);
    display:inline-flex;align-items:center;justify-content:center;
    width:26px;height:26px;border-radius:8px;background:var(--accent-light);
    margin-bottom:12px;
  }
  .fact h3{font-size:15.5px;font-weight:600;margin-bottom:6px}
  .fact p{font-size:13.5px;color:var(--text-sub);line-height:1.7}

  /* ============ 引言 ============ */
  .intro-block{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
    padding:32px;box-shadow:var(--shadow-sm);
    display:grid;grid-template-columns:minmax(0,1fr) 220px;gap:40px;align-items:center;
  }
  .intro-block p{color:var(--text-sub);font-size:16.5px;line-height:1.85}
  .intro-figure img{border-radius:var(--radius-img);aspect-ratio:1/1;object-fit:cover}
  .intro-figure figcaption{font-size:12.5px;color:var(--text-weak);margin-top:10px}

  /* ============ 卡片网格 ============ */
  .card-grid{
    display:grid;grid-template-columns:repeat(2,minmax(0,1fr));
    gap:24px;
  }
  .notice-card{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
    padding:26px;box-shadow:var(--shadow-sm);
    display:flex;flex-direction:column;
    transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
  }
  .notice-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:var(--primary-border)}
  .icon-box{
    width:44px;height:44px;border-radius:12px;
    background:var(--primary-light);color:var(--primary);
    display:flex;align-items:center;justify-content:center;
    margin-bottom:16px;flex:0 0 44px;
  }
  .notice-card h3{font-size:19px;font-weight:600;margin-bottom:10px}
  .notice-card p{font-size:14.5px;color:var(--text-sub);line-height:1.8}
  .notice-card .card-foot{margin-top:auto;padding-top:14px}
  .card-meta{
    display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px;
  }

  /* ============ 步骤条 ============ */
  .steps{
    display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;
    counter-reset:step;
  }
  .step{
    background:#fff;border:1px solid var(--line);border-radius:14px;
    padding:24px 22px;position:relative;
    box-shadow:var(--shadow-sm);
    transition:transform .2s var(--ease),box-shadow .2s var(--ease);
  }
  .step:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}
  .step-no{
    display:inline-flex;align-items:center;justify-content:center;
    width:30px;height:30px;border-radius:9px;
    background:var(--primary);color:#fff;font-size:13px;font-weight:700;
    margin-bottom:14px;
  }
  .step h3{font-size:16px;font-weight:600;margin-bottom:8px}
  .step p{font-size:13.5px;color:var(--text-sub);line-height:1.75}
  .step-line{
    position:relative;
  }

  /* ============ FAQ 手风琴 ============ */
  .faq-list{max-width:900px}
  .faq-item{
    background:#fff;border:1px solid var(--line);border-radius:14px;
    margin-bottom:12px;overflow:hidden;
    transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
  }
  .faq-item:hover{border-color:var(--primary-border);box-shadow:var(--shadow-sm)}
  .faq-item[open]{border-color:var(--primary-border);box-shadow:var(--shadow-sm)}
  .faq-item summary{
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:20px 24px;min-height:44px;cursor:pointer;
    font-size:17px;font-weight:600;line-height:1.5;
    list-style:none;
    transition:background .18s var(--ease);
  }
  .faq-item summary::-webkit-details-marker{display:none}
  .faq-item summary:hover{background:var(--soft)}
  .faq-item[open] summary{color:var(--primary)}
  .faq-chev{
    flex:0 0 20px;color:var(--text-weak);
    transition:transform .18s var(--ease),color .18s var(--ease);
  }
  .faq-item[open] .faq-chev{transform:rotate(180deg);color:var(--primary)}
  .faq-body{
    padding:0 24px 22px;border-left:3px solid var(--primary);
    margin-left:0;
  }
  .faq-body p{font-size:15px;color:var(--text-sub);line-height:1.85}

  /* ============ CTA ============ */
  .cta-band{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-hero);
    padding:40px;box-shadow:var(--shadow-sm);
    display:flex;align-items:center;justify-content:space-between;gap:32px;
    background-image:linear-gradient(100deg,rgba(234,240,254,.9),rgba(255,255,255,.6));
  }
  .cta-band h2{font-size:28px;margin-bottom:10px}
  .cta-band p{color:var(--text-sub);font-size:15.5px;max-width:620px}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px;flex:0 0 auto}

  /* ============ 页脚 ============ */
  .footer{
    background:#fff;border-top:1px solid var(--line);
    padding:64px 0 0;margin-top:auto;
  }
  .footer-grid{
    display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;
    padding-bottom:40px;
  }
  .footer-about{font-size:13.5px;color:var(--text-sub);line-height:1.8;margin-top:16px;max-width:320px}
  .footer h4{font-size:14px;font-weight:700;margin-bottom:16px;color:var(--text)}
  .footer-links{display:flex;flex-direction:column;gap:10px}
  .footer-links a{
    font-size:13.5px;color:var(--text-sub);
    transition:color .18s var(--ease);
    display:inline-flex;align-items:center;min-height:24px;
  }
  .footer-links a:hover{color:var(--primary)}
  .footer-bottom{
    border-top:1px solid var(--line);
    padding:20px 0 28px;
    display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
    font-size:12.5px;color:var(--text-weak);
  }

  /* ============ 抽屉遮罩 ============ */
  .sidebar-overlay{
    position:fixed;inset:0;background:rgba(16,24,40,.45);
    opacity:0;visibility:hidden;transition:opacity .2s var(--ease),visibility .2s var(--ease);
    z-index:55;
  }
  .sidebar-overlay.show{opacity:1;visibility:visible}

  /* ============ 弹层表单 ============ */
  .dialog{
    position:fixed;inset:0;z-index:90;
    display:none;align-items:center;justify-content:center;
    padding:24px;
  }
  .dialog.show{display:flex}
  .dialog-backdrop{position:absolute;inset:0;background:rgba(16,24,40,.5)}
  .dialog-panel{
    position:relative;width:100%;max-width:480px;
    background:#fff;border-radius:18px;padding:28px;
    box-shadow:var(--shadow-lg);
    max-height:90vh;overflow-y:auto;
    animation:dialogIn .22s var(--ease);
  }
  @keyframes dialogIn{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}
  .dialog-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-bottom:8px}
  .dialog-head h3{font-size:20px}
  .dialog-close{
    width:40px;height:40px;flex:0 0 40px;border-radius:10px;
    display:flex;align-items:center;justify-content:center;
    color:var(--text-sub);transition:background .18s var(--ease),color .18s var(--ease);
  }
  .dialog-close:hover{background:var(--bg);color:var(--text)}
  .dialog-desc{font-size:13.5px;color:var(--text-sub);margin-bottom:20px}

  .field{margin-bottom:16px}
  .field label{display:block;font-size:13.5px;font-weight:600;margin-bottom:8px}
  .field .req{color:var(--accent)}
  .field input,.field textarea{
    width:100%;min-height:44px;padding:11px 14px;
    border:1px solid var(--line);border-radius:var(--radius-btn);
    background:#fff;font-size:14.5px;
    transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
  }
  .field textarea{min-height:96px;resize:vertical;line-height:1.7}
  .field input:focus,.field textarea:focus{
    outline:none;border-color:var(--primary);
    box-shadow:0 0 0 3px rgba(39,81,214,.14);
  }
  .field input::placeholder,.field textarea::placeholder{color:var(--text-weak)}

  .check-row{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--text-sub);line-height:1.7}
  .check-row input{width:18px;height:18px;min-height:0;margin-top:3px;flex:0 0 18px;accent-color:var(--primary)}

  /* ============ 响应式 ============ */
  @media (min-width:1024px){
    .hamburger{display:none}
    .sidebar-overlay{display:none}
  }

  @media (max-width:1279px){
    .hero h1{font-size:40px}
  }

  @media (max-width:1023px){
    .sidebar{transform:translateX(-100%);box-shadow:var(--shadow-lg)}
    .sidebar.open{transform:translateX(0)}
    .main-area{margin-left:0}
    .hamburger{display:inline-flex}
    .topbar{padding:0 16px}
    .container{padding:0 20px}
    .section{padding:56px 0}
    .hero-grid{grid-template-columns:1fr;gap:36px;padding:48px 0 44px}
    .hero h1{font-size:34px}
    .hero-media{order:-1}
    .hero-chip{left:12px;bottom:12px}
    .facts{grid-template-columns:repeat(2,minmax(0,1fr))}
    .fact:nth-child(2){border-right:0}
    .fact:nth-child(1),.fact:nth-child(2){border-bottom:1px solid var(--line)}
    .intro-block{grid-template-columns:1fr;gap:24px}
    .intro-figure{max-width:240px}
    .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
    .cta-band{flex-direction:column;align-items:flex-start}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  }

  @media (max-width:767px){
    .card-grid{grid-template-columns:1fr}
    .section-head h2{font-size:25px}
    .hero h1{font-size:30px}
    .section{padding:48px 0}
    .notice-card{padding:22px}
    .faq-item summary{font-size:16px;padding:18px 20px}
    .faq-body{padding:0 20px 20px}
    .cta-band{padding:28px}
    .cta-band h2{font-size:23px}
  }

  @media (max-width:520px){
    .container{padding:0 16px}
    .steps{grid-template-columns:1fr}
    .facts{grid-template-columns:1fr}
    .fact{border-right:0;border-bottom:1px solid var(--line)}
    .fact:last-child{border-bottom:0}
    .footer-grid{grid-template-columns:1fr}
    .hero-actions .btn{width:100%}
    .hero-chip{position:static;margin-top:16px;left:auto;bottom:auto}
    .cta-actions{width:100%}
    .cta-actions .btn{width:100%}
    .dialog{align-items:flex-end;padding:0}
    .dialog-panel{max-width:100%;border-radius:18px 18px 0 0;padding:22px}
  }

  @media (prefers-reduced-motion:reduce){
    *{animation-duration:.01ms !important;transition-duration:.01ms !important}
    .notice-card:hover,.step:hover,.btn-primary:hover{transform:none}
  }