/* roulang page: index */
:root{
  --c-primary:#0F5AA8;
  --c-primary-dark:#0B4784;
  --c-primary-light:#E8F1FB;
  --c-accent:#B7F04A;
  --c-warn:#FF6B35;
  --c-ink:#0E1726;
  --c-muted:#48586B;
  --c-faint:#7C8B9D;
  --c-page:#F5F7FA;
  --c-card:#FFFFFF;
  --c-border:#E3E9F1;
  --c-divider:#EEF2F7;
  --r-card:14px;
  --r-lg:18px;
  --r-btn:10px;
  --sh-1:0 1px 2px rgba(14,23,38,.06);
  --sh-2:0 10px 24px rgba(14,23,38,.10);
  --ease:180ms ease-out;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  padding-top:68px;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--c-ink);
  background:var(--c-page);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;}
button,input,textarea,select{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
.num{font-variant-numeric:tabular-nums;}

.container{width:100%;max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px;}

/* ---------- 头部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  background:#fff;border-bottom:1px solid var(--c-border);
  transition:box-shadow var(--ease);
}
.site-header.is-scrolled{box-shadow:0 2px 12px rgba(14,23,38,.06);}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  height:68px;transition:height var(--ease);
}
.site-header.is-scrolled .header-inner{height:60px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{width:32px;height:32px;display:block;}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:17px;font-weight:800;letter-spacing:.2px;}
.brand-text em{font-style:normal;font-size:11px;color:var(--c-faint);letter-spacing:1px;}
.main-nav{display:none;align-items:center;gap:2px;flex:1;justify-content:center;}
.nav-link{
  position:relative;padding:8px 11px;font-size:14px;color:var(--c-muted);
  border-radius:8px;white-space:nowrap;transition:color var(--ease),background var(--ease);
}
.nav-link:hover{color:var(--c-primary);background:var(--c-primary-light);}
.nav-link.is-active{color:var(--c-primary);font-weight:600;}
.nav-link.is-active::after{
  content:"";position:absolute;left:11px;right:11px;bottom:-3px;height:2px;
  border-radius:2px;background:var(--c-primary);
}
.header-actions{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.header-actions .btn-outline{display:none;}
.menu-toggle{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border:1px solid var(--c-border);border-radius:10px;
  background:#fff;cursor:pointer;transition:background var(--ease),border-color var(--ease);
}
.menu-toggle:hover{background:var(--c-primary-light);border-color:#B9D2EC;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:background var(--ease),color var(--ease),transform var(--ease),box-shadow var(--ease),border-color var(--ease);
  text-align:center;
}
.btn-sm{height:38px;font-size:14px;padding:0 16px;}
.btn-primary{background:var(--c-primary);color:#fff;}
.btn-primary:hover{background:var(--c-primary-dark);transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0);}
.btn-outline{background:#fff;color:var(--c-primary);border-color:var(--c-primary);}
.btn-outline:hover{background:var(--c-primary-light);}
.btn-ghost{background:transparent;color:var(--c-muted);}
.btn-ghost:hover{background:var(--c-divider);}
.btn-block{width:100%;}
.btn:focus-visible,.nav-link:focus-visible,.menu-toggle:focus-visible,a:focus-visible,button:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(15,90,168,.30);}

/* ---------- 徽章 / 文字链 ---------- */
.badge{display:inline-flex;align-items:center;padding:5px 12px;border-radius:999px;font-size:12px;line-height:1.4;font-weight:600;}
.badge-primary{background:var(--c-primary-light);color:var(--c-primary);}
.badge-muted{background:#F1F4F8;color:var(--c-muted);}
.badge-accent{background:var(--c-accent);color:#26400A;}
.badge-warn{background:#FFF0EA;color:var(--c-warn);}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--c-primary);transition:color var(--ease);}
.link-arrow svg{transition:transform var(--ease);}
.link-arrow:hover{color:var(--c-primary-dark);}
.link-arrow:hover svg{transform:translateX(2px);}

/* ---------- 区块 ---------- */
.section{padding:88px 0;}
.section-alt{background:#fff;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;}
.section-title{font-size:22px;line-height:1.35;font-weight:700;}
.section-lead{font-size:14px;color:var(--c-faint);margin-top:8px;max-width:640px;}
@media (min-width:1024px){.section-title{font-size:30px;}}

/* ---------- Hero ---------- */
.hero{background:#fff;border-bottom:1px solid var(--c-border);padding:52px 0 72px;}
.hero-grid{display:grid;grid-template-columns:1fr;gap:40px;align-items:center;}
.hero-title{font-size:28px;line-height:1.3;font-weight:700;margin-top:16px;letter-spacing:-.2px;}
.hero-sub{font-size:16px;color:var(--c-muted);margin-top:16px;max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.hero-trust{font-size:12px;color:var(--c-faint);margin-top:20px;letter-spacing:.2px;}
.hero-visual{position:relative;}
.hero-frame{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  aspect-ratio:16/10;background:#DCE7F4;box-shadow:var(--sh-1);
}
.hero-frame img{width:100%;height:100%;object-fit:cover;}
.hero-frame::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(15,90,168,.05),rgba(15,90,168,.13));
}
.hero-float{
  position:absolute;left:-8px;bottom:22px;display:flex;align-items:center;gap:12px;
  background:#fff;border:1px solid var(--c-border);border-radius:14px;
  box-shadow:var(--sh-2);padding:12px 20px 12px 0;min-height:64px;
}
.hero-float-bar{width:4px;align-self:stretch;border-radius:0 4px 4px 0;background:var(--c-primary);}
.hero-float-num{font-size:22px;font-weight:800;color:var(--c-primary);line-height:1.2;font-variant-numeric:tabular-nums;}
.hero-float-num em{font-style:normal;font-size:12px;font-weight:600;color:var(--c-faint);margin-left:2px;}
.hero-float-label{font-size:12px;color:var(--c-faint);}

/* ---------- 指标卡 ---------- */
.metric-card{
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:transform var(--ease),box-shadow var(--ease);
}
.metric-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.metric-value{font-size:44px;font-weight:800;line-height:1.1;color:var(--c-primary);font-variant-numeric:tabular-nums;}
.metric-value em{font-style:normal;font-size:12px;font-weight:600;color:var(--c-faint);margin-left:4px;}
.metric-name{font-size:14px;font-weight:600;color:var(--c-primary);margin-top:8px;}
.metric-desc{font-size:12px;color:var(--c-faint);margin-top:4px;line-height:1.6;}
.metric-track{margin-top:20px;height:4px;border-radius:999px;background:var(--c-divider);overflow:hidden;}
.metric-bar{height:100%;border-radius:999px;background:var(--c-primary);}
.metric-bar.is-accent{background:var(--c-accent);}

/* ---------- 服务矩阵 ---------- */
.bento-card{
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);
  box-shadow:var(--sh-1);overflow:hidden;display:flex;flex-direction:column;
  transition:transform var(--ease),box-shadow var(--ease);
}
.bento-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.bento-body{padding:24px;}
.bento-icon{
  width:40px;height:40px;border-radius:12px;background:var(--c-primary-light);
  color:var(--c-primary);display:flex;align-items:center;justify-content:center;
}
.bento-title{font-size:18px;font-weight:700;margin-top:16px;}
.bento-text{font-size:14px;color:var(--c-muted);margin-top:8px;}
.bento-wide-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:#E3ECF7;}
.bento-wide-media img{width:100%;height:100%;object-fit:cover;}
.bento-wide-media::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(14,23,38,.42),rgba(14,23,38,.06));}
.bento-wide-caption{
  position:absolute;left:24px;right:24px;bottom:24px;z-index:2;color:#fff;
}
.bento-wide-caption h3{font-size:20px;font-weight:700;}
.bento-wide-caption p{font-size:13px;color:rgba(255,255,255,.86);margin-top:6px;max-width:520px;}
.bento-list{margin-top:16px;}
.bento-list li{
  position:relative;padding:10px 0 10px 18px;font-size:14px;color:var(--c-muted);
  border-bottom:1px dashed var(--c-divider);
}
.bento-list li:last-child{border-bottom:0;}
.bento-list li::before{
  content:"";position:absolute;left:0;top:19px;width:6px;height:6px;border-radius:2px;background:var(--c-primary);
}

/* ---------- 资讯卡片 ---------- */
.post-card{
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);
  box-shadow:var(--sh-1);overflow:hidden;display:flex;flex-direction:column;
  transition:transform var(--ease),box-shadow var(--ease);
}
.post-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.post-cover{position:relative;aspect-ratio:16/9;overflow:hidden;background:#E9EFF7;}
.post-cover img{width:100%;height:100%;object-fit:cover;transition:transform 320ms ease-out;}
.post-card:hover .post-cover img{transform:scale(1.04);}
.post-body{padding:20px;display:flex;flex-direction:column;flex:1;}
.post-title{
  font-size:17px;font-weight:700;line-height:1.5;margin-top:12px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-title a:hover{color:var(--c-primary);}
.post-summary{
  font-size:14px;color:var(--c-muted);margin-top:8px;line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-foot{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:16px;padding-top:14px;border-top:1px solid var(--c-divider);
}
.post-time{font-size:12px;color:var(--c-faint);}
.empty-state{
  text-align:center;padding:56px 24px;border:1px dashed var(--c-border);
  border-radius:var(--r-card);background:#fff;
}
.empty-figure{
  width:96px;height:96px;margin:0 auto 16px;border-radius:16px;
  border:2px solid var(--c-border);display:flex;align-items:center;justify-content:center;color:#C4D0DE;
}
.empty-text{font-size:14px;color:var(--c-faint);}

/* ---------- 结果对比 ---------- */
.compare-wrap{background:#fff;border:1px solid var(--c-border);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1);}
.compare-head{display:grid;grid-template-columns:1fr;background:var(--c-page);font-size:13px;font-weight:600;color:var(--c-faint);}
.compare-head>div{padding:14px 24px;}
.compare-row{display:grid;grid-template-columns:1fr;border-top:1px solid var(--c-divider);}
.compare-row>div{padding:14px 24px;display:flex;align-items:center;gap:10px;font-size:15px;min-height:56px;}
.compare-left{color:var(--c-muted);}
.compare-right{color:var(--c-ink);font-weight:600;background:#FBFDFF;}
.compare-right svg{flex-shrink:0;color:var(--c-primary);}
.compare-tag{margin-left:auto;flex-shrink:0;}

/* ---------- FAQ ---------- */
.faq-item{
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);
  margin-bottom:12px;overflow:hidden;transition:border-color var(--ease);
}
.faq-item:hover{border-color:#B9D2EC;}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;padding:14px 20px;background:transparent;border:0;text-align:left;
  font-size:16px;font-weight:600;cursor:pointer;
}
.faq-icon{flex-shrink:0;color:var(--c-faint);transition:transform 220ms ease-out,color 220ms ease-out;display:inline-flex;}
.faq-item.open .faq-icon{transform:rotate(45deg);color:var(--c-primary);}
.faq-body{max-height:0;overflow:hidden;opacity:0;transition:max-height 220ms ease-out,opacity 220ms ease-out;}
.faq-item.open .faq-body{max-height:420px;opacity:1;}
.faq-body-inner{padding:0 20px 18px;font-size:15px;color:var(--c-muted);line-height:1.8;}

/* ---------- CTA 表单 ---------- */
.cta-band{background:var(--c-primary-light);}
.cta-grid{display:grid;grid-template-columns:1fr;gap:32px;align-items:start;}
.cta-points li{display:flex;align-items:flex-start;gap:10px;font-size:15px;color:var(--c-muted);margin-top:12px;}
.cta-points svg{flex-shrink:0;margin-top:4px;color:var(--c-primary);}
.form-card{background:#fff;border:1px solid var(--c-border);border-radius:var(--r-lg);box-shadow:var(--sh-1);padding:28px;}
.field{margin-bottom:16px;}
.field-label{display:block;font-size:13px;font-weight:600;color:var(--c-muted);margin-bottom:6px;}
.field-input{
  width:100%;height:48px;padding:0 14px;background:#fff;
  border:1px solid var(--c-border);border-radius:var(--r-btn);font-size:15px;
  transition:border-color var(--ease),box-shadow var(--ease);
}
textarea.field-input{height:auto;min-height:112px;padding:12px 14px;resize:vertical;line-height:1.7;}
.field-input:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(15,90,168,.18);}
.form-note{font-size:12px;color:var(--c-faint);margin-top:12px;text-align:center;}
.form-tip{
  display:none;margin-top:14px;padding:10px 14px;border-radius:var(--r-btn);
  background:var(--c-primary-light);color:var(--c-primary);font-size:13px;
}
.form-tip.show{display:block;}

/* ---------- 页脚 ---------- */
.site-footer{background:#fff;border-top:1px solid var(--c-border);padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px;}
.footer-title{font-size:13px;font-weight:700;color:var(--c-ink);letter-spacing:.4px;margin-bottom:14px;}
.footer-links li{margin-bottom:2px;}
.footer-links a{display:block;font-size:13px;color:var(--c-muted);line-height:32px;transition:color var(--ease);}
.footer-links a:hover{color:var(--c-primary);}
.footer-desc{font-size:12px;color:var(--c-faint);margin-top:12px;line-height:1.8;max-width:300px;}
.footer-bottom{
  margin-top:48px;border-top:1px solid var(--c-divider);padding:20px 0;
  display:flex;flex-wrap:wrap;gap:8px 24px;justify-content:space-between;
  font-size:12px;color:var(--c-faint);
}

/* ---------- 移动抽屉 ---------- */
.mobile-drawer{
  position:fixed;inset:0;z-index:80;background:#fff;transform:translateX(100%);
  transition:transform 240ms ease-out;display:flex;flex-direction:column;
}
.mobile-drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;height:68px;padding:0 20px;border-bottom:1px solid var(--c-border);}
.drawer-close{
  width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--c-border);border-radius:10px;background:#fff;cursor:pointer;
}
.drawer-body{flex:1;overflow-y:auto;padding:20px;}
.drawer-group-title{font-size:13px;color:var(--c-faint);font-weight:600;margin:8px 0 6px;letter-spacing:.4px;}
.drawer-link{
  position:relative;display:flex;align-items:center;height:48px;padding-left:14px;
  font-size:15px;color:var(--c-muted);border-bottom:1px solid var(--c-divider);
}
.drawer-link.is-active{color:var(--c-primary);font-weight:600;}
.drawer-link.is-active::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;
  border-radius:3px;background:var(--c-primary);
}
.drawer-foot{padding:16px 20px calc(20px + env(safe-area-inset-bottom));border-top:1px solid var(--c-border);}

/* ---------- 移动底部 Tab ---------- */
.mobile-tabbar{
  display:flex;position:fixed;left:0;right:0;bottom:0;z-index:70;background:#fff;
  border-top:1px solid var(--c-border);height:calc(56px + env(safe-area-inset-bottom));
  padding-bottom:env(safe-area-inset-bottom);
}
.tab-item{
  flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;
  font-size:11px;color:var(--c-faint);position:relative;transition:color var(--ease);
}
.tab-item svg{width:22px;height:22px;}
.tab-item.is-active{color:var(--c-primary);}
.tab-item.is-active::after{
  content:"";position:absolute;bottom:0;left:50%;transform:translateX(-50%);
  width:24px;height:2px;border-radius:2px;background:var(--c-primary);
}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  body{padding-bottom:calc(56px + env(safe-area-inset-bottom));}
  .metric-card.lg\:translate-y-6{transform:none;}
}
@media (min-width:640px){
  .compare-head{grid-template-columns:1fr 1fr;}
  .compare-head>div:last-child{border-left:1px solid var(--c-border);}
  .compare-row{grid-template-columns:1fr 1fr;}
  .compare-right{border-left:1px solid var(--c-divider);}
}
@media (min-width:768px){
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;}
}
@media (min-width:1024px){
  .main-nav{display:flex;}
  .menu-toggle{display:none;}
  .mobile-tabbar{display:none;}
  .header-actions .btn-outline{display:inline-flex;}
  .hero{padding:64px 0 88px;}
  .hero-grid{grid-template-columns:7fr 5fr;gap:56px;}
  .hero-title{font-size:40px;line-height:1.25;}
  .cta-grid{grid-template-columns:1fr 1fr;gap:48px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:.01ms !important;animation-duration:.01ms !important;scroll-behavior:auto !important;}
}

/* roulang page: article */
:root{
  --c-primary:#0F5AA8;
  --c-primary-dark:#0B4784;
  --c-primary-light:#E8F1FB;
  --c-accent:#B7F04A;
  --c-warn:#FF6B35;
  --t-main:#0E1726;
  --t-sub:#48586B;
  --t-weak:#7C8B9D;
  --bg-page:#F5F7FA;
  --bg-card:#FFFFFF;
  --bd:#E3E9F1;
  --div:#EEF2F7;
  --r-card:14px;
  --r-lg:18px;
  --r-btn:10px;
  --sh-1:0 1px 2px rgba(14,23,38,.06);
  --sh-2:0 10px 24px rgba(14,23,38,.10);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
.site-body{
  margin:0;
  padding:0;
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--t-main);
  background:var(--bg-page);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input,textarea,select{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;line-height:1.35;font-weight:700;}
p{margin:0;}
svg{display:block;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#fff;border-bottom:1px solid var(--bd);
  transition:box-shadow .18s ease-out;
}
.site-header.is-scrolled{box-shadow:0 2px 12px rgba(14,23,38,.06);}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  height:68px;transition:height .18s ease-out;
}
.site-header.is-scrolled .header-inner{height:60px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{display:flex;align-items:center;justify-content:center;}
.brand-text{display:flex;flex-direction:column;line-height:1.1;}
.brand-text strong{font-size:17px;font-weight:700;letter-spacing:.2px;color:var(--t-main);}
.brand-text em{font-style:normal;font-size:11px;color:var(--t-weak);letter-spacing:.6px;}
.main-nav{display:flex;align-items:center;gap:2px;}
.nav-link{
  position:relative;display:inline-block;padding:8px 12px;font-size:14.5px;
  color:var(--t-sub);border-radius:8px;
  transition:color .18s ease-out,background .18s ease-out;
}
.nav-link:hover{color:var(--c-primary);background:var(--c-primary-light);}
.nav-link.is-active{color:var(--c-primary);font-weight:600;}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:0;height:2px;
  border-radius:2px;background:var(--c-primary);
}
.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.nav-toggle{
  display:none;width:44px;height:44px;flex-direction:column;align-items:center;
  justify-content:center;gap:5px;background:transparent;border:1px solid var(--bd);
  border-radius:10px;cursor:pointer;transition:border-color .18s ease-out,background .18s ease-out;
}
.nav-toggle:hover{border-color:var(--c-primary);background:var(--c-primary-light);}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--t-main);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:14.5px;font-weight:600;border:1px solid transparent;cursor:pointer;
  white-space:nowrap;
  transition:transform .18s ease-out,background .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out,color .18s ease-out;
}
.btn-primary{background:var(--c-primary);color:#fff;}
.btn-primary:hover{background:var(--c-primary-dark);transform:translateY(-1px);box-shadow:0 8px 18px rgba(15,90,168,.22);}
.btn-primary:active{transform:translateY(0);box-shadow:none;}
.btn-outline{background:#fff;color:var(--c-primary);border-color:var(--c-primary);}
.btn-outline:hover{background:var(--c-primary-light);}
.btn-ghost{background:transparent;color:var(--t-sub);}
.btn-ghost:hover{background:var(--div);color:var(--t-main);}
.btn:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(15,90,168,.3);}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;
  color:var(--c-primary);transition:color .18s ease-out;
}
.link-arrow svg{transition:transform .18s ease-out;}
.link-arrow:hover{color:var(--c-primary-dark);}
.link-arrow:hover svg{transform:translateX(2px);}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;
  border-radius:999px;font-size:12px;font-weight:600;line-height:1;
}
.badge-primary{background:var(--c-primary-light);color:var(--c-primary);}
.badge-neutral{background:var(--div);color:var(--t-sub);font-weight:500;}
.badge-accent{background:var(--c-accent);color:#22330A;}

/* ---------- 移动抽屉 ---------- */
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(86vw,360px);background:#fff;
  z-index:90;transform:translateX(102%);transition:transform .26s ease-out;
  box-shadow:-8px 0 30px rgba(14,23,38,.12);display:flex;flex-direction:column;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{
  display:flex;align-items:center;justify-content:space-between;
  padding:18px 20px;border-bottom:1px solid var(--div);
}
.drawer-close{
  width:36px;height:36px;border-radius:10px;border:1px solid var(--bd);
  background:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;
  transition:border-color .18s ease-out,background .18s ease-out;
}
.drawer-close:hover{border-color:var(--c-primary);background:var(--c-primary-light);}
.drawer-body{padding:14px 12px 28px;overflow-y:auto;flex:1;}
.drawer-group-title{
  font-size:13px;color:var(--t-weak);padding:12px 12px 6px;font-weight:500;
}
.drawer-link{
  display:flex;align-items:center;height:48px;padding:0 12px;border-radius:10px;
  font-size:15px;color:var(--t-sub);position:relative;
  transition:background .18s ease-out,color .18s ease-out;
}
.drawer-link:hover{background:var(--div);color:var(--t-main);}
.drawer-link.is-active{color:var(--c-primary);font-weight:600;background:var(--c-primary-light);}
.drawer-link.is-active::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;
  border-radius:2px;background:var(--c-primary);
}
.drawer-mask{
  position:fixed;inset:0;background:rgba(14,23,38,.42);z-index:85;
  opacity:0;visibility:hidden;transition:opacity .26s ease-out,visibility .26s;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}

/* ---------- 面包屑 ---------- */
.page-main{padding:28px 0 0;}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:6px;
  font-size:12.5px;color:var(--t-weak);margin-bottom:20px;
}
.breadcrumb a{transition:color .18s ease-out;}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb .sep{color:#C4CDD8;}
.breadcrumb .current{color:var(--c-primary);font-weight:600;}

/* ---------- 文章主体 ---------- */
.article-shell{
  background:var(--bg-card);border:1px solid var(--bd);
  border-radius:var(--r-lg);padding:40px 44px 44px;box-shadow:var(--sh-1);
}
.article-head{max-width:860px;}
.article-title{
  font-size:34px;line-height:1.35;font-weight:700;
  letter-spacing:-.2px;margin-bottom:18px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  font-size:12.5px;color:var(--t-weak);
  padding-bottom:20px;border-bottom:1px solid var(--div);margin-bottom:28px;
}
.article-meta .dot{color:#C4CDD8;}
.feature-figure{margin:0 0 30px;max-width:860px;}
.feature-figure img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:14px;background:var(--div);}
.feature-figure figcaption{font-size:13px;color:var(--t-weak);text-align:center;margin-top:10px;}

.article-body{max-width:740px;margin:0 auto;font-size:16px;line-height:1.85;color:var(--t-main);}
.article-body > * + *{margin-top:20px;}
.article-body p{margin:0;font-size:16px;line-height:1.85;}
.article-body h2{
  position:relative;font-size:23px;line-height:1.45;font-weight:700;
  margin:40px 0 16px;padding-left:14px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;
  border-radius:2px;background:var(--c-primary);
}
.article-body h3{font-size:18px;font-weight:700;margin:28px 0 12px;}
.article-body ul,.article-body ol{padding-left:24px;}
.article-body ul li,.article-body ol li{position:relative;margin:8px 0;line-height:1.8;}
.article-body ul li::before{
  content:"";position:absolute;left:-18px;top:11px;width:7px;height:7px;
  border-radius:2px;background:var(--c-primary);
}
.article-body ol{counter-reset:item;}
.article-body ol li{counter-increment:item;}
.article-body ol li::before{
  content:counter(item);position:absolute;left:-26px;top:3px;
  width:18px;height:18px;border-radius:5px;background:var(--c-primary-light);
  color:var(--c-primary);font-size:11px;font-weight:700;line-height:18px;text-align:center;
}
.article-body blockquote{
  margin:24px 0;padding:16px 20px;background:var(--c-primary-light);
  border-left:3px solid var(--c-primary);border-radius:0 10px 10px 0;color:var(--t-sub);
}
.article-body img{border-radius:12px;margin:8px auto;height:auto;}
.article-body figure{margin:24px 0;}
.article-body figcaption{font-size:13px;color:var(--t-weak);text-align:center;margin-top:8px;}
.article-body a{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:var(--c-primary-dark);}
.article-body table{
  width:100%;border-collapse:collapse;font-size:14.5px;
  border:1px solid var(--bd);border-radius:10px;overflow:hidden;
}
.article-body th{
  background:var(--c-primary-light);color:var(--c-primary);
  font-weight:600;text-align:left;
}
.article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--div);}
.article-body tbody tr:hover{background:#FAFBFD;}
.article-body strong{font-weight:700;color:var(--t-main);}
.article-body code{
  background:var(--div);border-radius:6px;padding:2px 6px;font-size:14px;
}

/* ---------- 空态 ---------- */
.empty-state{
  max-width:520px;margin:24px auto 8px;text-align:center;
  padding:40px 24px;border:1px dashed var(--bd);border-radius:var(--r-card);
  background:#FCFDFF;
}
.empty-mark{
  width:96px;height:96px;margin:0 auto 18px;border-radius:18px;
  border:2px solid var(--bd);position:relative;
}
.empty-mark::before,.empty-mark::after{
  content:"";position:absolute;background:var(--bd);border-radius:2px;
}
.empty-mark::before{left:24px;right:24px;top:38px;height:2px;}
.empty-mark::after{left:24px;right:24px;top:54px;height:2px;}
.empty-state p{font-size:14px;color:var(--t-weak);margin-bottom:18px;}

/* ---------- 文章底部 ---------- */
.tag-row{
  display:flex;flex-wrap:wrap;gap:10px;align-items:center;
  margin-top:40px;padding-top:24px;border-top:1px solid var(--div);
}
.tag-row .tag-label{font-size:12.5px;color:var(--t-weak);margin-right:2px;}
.tag{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;
  border-radius:999px;background:var(--div);color:var(--t-sub);font-size:13px;
  transition:background .18s ease-out,color .18s ease-out;
}
.tag:hover{background:var(--c-primary-light);color:var(--c-primary);}
.back-cat{margin-top:22px;}

.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:28px;}
.post-nav-card{
  display:block;background:#fff;border:1px solid var(--bd);
  border-radius:var(--r-card);padding:20px;
  transition:box-shadow .18s ease-out,transform .18s ease-out,border-color .18s ease-out;
}
.post-nav-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px);border-color:#D6E3F3;}
.post-nav-label{font-size:12px;color:var(--t-weak);}
.post-nav-title{font-size:16px;font-weight:600;margin-top:6px;line-height:1.5;color:var(--t-main);}

/* ---------- 通用板块 ---------- */
.section{padding:64px 0 0;}
.section-last{padding-bottom:8px;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;flex-wrap:wrap;}
.section-title{font-size:26px;font-weight:700;letter-spacing:-.2px;}
.section-sub{font-size:14.5px;color:var(--t-sub);margin-top:8px;}

/* ---------- 卡片 ---------- */
.card-grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.card{
  display:flex;flex-direction:column;background:var(--bg-card);
  border:1px solid var(--bd);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--sh-1);
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#D6E3F3;}
.card-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--div);}
.card-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out;}
.card:hover .card-thumb img{transform:scale(1.03);}
.card-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-title{font-size:17px;font-weight:600;line-height:1.5;color:var(--t-main);}
.card-text{font-size:14px;color:var(--t-sub);line-height:1.7;}
.card-foot{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  font-size:12px;color:var(--t-weak);padding-top:10px;
}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--c-primary-light);border-radius:var(--r-lg);
  padding:28px 32px;display:flex;align-items:center;justify-content:space-between;
  gap:24px;flex-wrap:wrap;
}
.cta-band h2{font-size:21px;font-weight:700;margin-bottom:6px;}
.cta-band p{font-size:14px;color:var(--t-sub);}
.cta-band .cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:#fff;border-top:1px solid var(--bd);
  padding:56px 0 24px;margin-top:72px;
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;}
.footer-title{font-size:14px;font-weight:600;margin:0 0 14px;color:var(--t-main);}
.footer-links li{margin-bottom:2px;}
.footer-links a{
  display:block;font-size:13px;color:var(--t-sub);line-height:32px;
  transition:color .18s ease-out;
}
.footer-links a:hover{color:var(--c-primary);}
.footer-desc{
  font-size:12.5px;color:var(--t-weak);line-height:1.8;
  margin-top:14px;max-width:320px;
}
.footer-bottom{
  border-top:1px solid var(--div);margin-top:40px;padding-top:20px;
  display:flex;align-items:center;justify-content:space-between;
  gap:12px;flex-wrap:wrap;font-size:12px;color:var(--t-weak);
}

/* ---------- 移动底部 Tab ---------- */
.mobile-tabbar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:#fff;border-top:1px solid var(--bd);
  padding-bottom:env(safe-area-inset-bottom);
  align-items:stretch;
}
.tab-item{
  flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:2px;height:56px;font-size:11px;color:var(--t-weak);position:relative;
  transition:color .18s ease-out;
}
.tab-item svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
.tab-item.is-active{color:var(--c-primary);}
.tab-item.is-active::after{
  content:"";position:absolute;bottom:0;width:24px;height:2px;
  border-radius:2px;background:var(--c-primary);
}
.tab-item:active{background:#FAFBFD;}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .main-nav{display:none;}
  .header-actions .btn-outline{display:none;}
  .nav-toggle{display:flex;}
  .site-body{padding-bottom:72px;}
  .article-shell{padding:28px 22px 32px;border-radius:var(--r-card);}
  .article-title{font-size:26px;}
  .article-body{font-size:15.5px;}
  .article-body h2{font-size:20px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .card-grid-3{grid-template-columns:repeat(2,1fr);}
  .section{padding:48px 0 0;}
  .site-footer{margin-top:48px;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .header-inner{height:60px;}
  .brand-text strong{font-size:16px;}
  .card-grid-3{grid-template-columns:1fr;}
  .post-nav{grid-template-columns:1fr;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:24px;}
  .cta-band .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:8px;}
  .footer-title{margin-top:18px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .article-title{font-size:23px;}
  .section-title{font-size:21px;}
  .badge{font-size:11.5px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category1 */
:root{
  --c-primary:#0F5AA8;
  --c-primary-dark:#0B4784;
  --c-primary-soft:#E8F1FB;
  --c-accent:#B7F04A;
  --c-warn:#FF6B35;
  --c-text:#0E1726;
  --c-text-2:#48586B;
  --c-text-3:#7C8B9D;
  --c-bg:#F5F7FA;
  --c-card:#FFFFFF;
  --c-border:#E3E9F1;
  --c-line:#EEF2F7;
  --r-card:14px;
  --r-lg:18px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(14,23,38,.06);
  --sh-2:0 10px 24px rgba(14,23,38,.10);
  --tr:180ms ease-out;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans","Microsoft YaHei",sans-serif;
  background:var(--c-bg);
  color:var(--c-text);
  font-size:16px;
  line-height:1.75;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,textarea{font:inherit;color:inherit}
button{cursor:pointer}
h1,h2,h3,h4,p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:3px solid rgba(15,90,168,.3);outline-offset:2px;border-radius:6px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section-alt{background:#FFFFFF}
.section-head{max-width:720px;margin-bottom:40px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--c-primary);letter-spacing:.06em;
  margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--c-primary);border-radius:2px}
.section-title{font-size:30px;line-height:1.35;font-weight:700;letter-spacing:-.01em}
.section-sub{font-size:15px;color:var(--c-text-2);margin-top:12px;line-height:1.75}

/* ---------- 顶栏 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid var(--c-border);
  transition:box-shadow var(--tr);
}
.site-header.is-scrolled{box-shadow:0 2px 12px rgba(14,23,38,.06)}
.header-inner{display:flex;align-items:center;gap:20px;height:68px;transition:height var(--tr)}
.site-header.is-scrolled .header-inner{height:60px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{display:flex;align-items:center;justify-content:center;width:34px;height:34px}
.brand-text{display:flex;flex-direction:column;line-height:1.1}
.brand-text strong{font-size:17px;font-weight:700;letter-spacing:.01em;color:var(--c-text)}
.brand-text em{font-size:11px;font-style:normal;color:var(--c-text-3);letter-spacing:.14em;margin-top:2px}
.main-nav{display:flex;align-items:center;gap:2px;margin-left:8px;flex:1 1 auto}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:36px;
  padding:0 12px;border-radius:8px;font-size:14px;color:var(--c-text-2);
  white-space:nowrap;transition:color var(--tr),background var(--tr);
}
.nav-link:hover{color:var(--c-primary);background:#F1F5FA}
.nav-link.is-active{color:var(--c-primary);font-weight:600;background:var(--c-primary-soft)}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:-1px;height:2px;
  background:var(--c-primary);border-radius:2px;
}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
.hamburger{
  display:none;width:44px;height:44px;align-items:center;justify-content:center;
  border:1px solid var(--c-border);border-radius:var(--r-btn);background:#fff;
}
.hamburger span{display:block;width:18px;height:2px;background:var(--c-text);border-radius:2px;position:relative}
.hamburger span::before,.hamburger span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--c-text);border-radius:2px;
}
.hamburger span::before{top:-6px}
.hamburger span::after{top:6px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:background var(--tr),color var(--tr),transform var(--tr),box-shadow var(--tr),border-color var(--tr);
}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-primary-dark);transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:none;box-shadow:var(--sh-1)}
.btn-outline{background:#fff;border-color:var(--c-primary);color:var(--c-primary)}
.btn-outline:hover{background:var(--c-primary-soft)}
.btn-ghost{background:transparent;color:var(--c-text-2);border-color:transparent}
.btn-ghost:hover{background:#EDF1F6;color:var(--c-text)}
.btn-block{width:100%}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--c-primary);
}
.link-arrow svg{transition:transform var(--tr)}
.link-arrow:hover{color:var(--c-primary-dark)}
.link-arrow:hover svg{transform:translateX(2px)}

/* ---------- 面包屑 ---------- */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12px;color:var(--c-text-3)}
.breadcrumb a{color:var(--c-text-3);transition:color var(--tr)}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb .sep{color:#C4CEDA}
.breadcrumb .current{color:var(--c-primary);font-weight:600}

/* ---------- 分类 Hero ---------- */
.cat-hero{
  position:relative;background:#fff;border-bottom:1px solid var(--c-border);
  padding:48px 0 56px;overflow:hidden;
}
.cat-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(90deg,rgba(15,90,168,.06) 1px,transparent 1px),
    linear-gradient(0deg,rgba(15,90,168,.06) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.55),transparent 78%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.55),transparent 78%);
}
.hero-grid{position:relative;display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center}
.hero-title{
  font-size:40px;line-height:1.25;font-weight:700;letter-spacing:-.015em;margin-top:20px;
}
.hero-sub{font-size:16px;color:var(--c-text-2);margin-top:16px;max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-trust{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px;font-size:12px;color:var(--c-text-3)}
.hero-trust span::after{content:"·";margin-left:10px;color:#C4CEDA}
.hero-trust span:last-child::after{content:"";margin:0}
.hero-visual{position:relative}
.hero-figure{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--c-border);box-shadow:var(--sh-1);background:#fff;
}
.hero-figure::after{
  content:"";position:absolute;inset:0;background:rgba(245,247,250,.12);
}
.hero-figure img{width:100%;height:100%;aspect-ratio:16/10;object-fit:cover}
.float-card{
  position:absolute;left:-16px;bottom:-20px;display:flex;align-items:center;gap:12px;
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);
  box-shadow:var(--sh-2);padding:12px 18px 12px 14px;min-height:64px;
}
.float-card::before{content:"";width:4px;height:36px;border-radius:3px;background:var(--c-primary)}
.float-card strong{display:block;font-size:17px;font-weight:800;color:var(--c-primary);line-height:1.2}
.float-card span{display:block;font-size:12px;color:var(--c-text-3)}

/* ---------- 要点卡 ---------- */
.card{
  background:var(--c-card);border:1px solid var(--c-border);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-1);
  transition:transform var(--tr),box-shadow var(--tr),border-color var(--tr);
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#D5E2F2}
.card h3{font-size:20px;line-height:1.45;font-weight:700;margin-top:16px}
.card p{font-size:15px;color:var(--c-text-2);margin-top:8px}
.icon-box{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:10px;background:var(--c-primary-soft);color:var(--c-primary);
}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.tick-list{margin-top:16px;display:flex;flex-direction:column;gap:10px}
.tick-list li{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--c-text-2)}
.tick-list li svg{flex:0 0 auto;margin-top:4px;color:var(--c-primary)}

/* ---------- 对比矩阵 ---------- */
.compare{
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--sh-1);
}
.compare-row{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--c-line)}
.compare-row:first-child{border-top:0}
.compare-head{
  background:#F8FAFD;border-top:0;border-bottom:1px solid var(--c-border);
}
.compare-th{
  display:flex;align-items:center;gap:8px;
  padding:16px 24px;font-size:14px;font-weight:600;color:var(--c-text-3);
}
.compare-th--active{color:var(--c-primary);border-left:1px solid var(--c-line);background:#F2F8FE}
.compare-td{
  display:flex;align-items:center;gap:10px;
  min-height:56px;padding:14px 24px;font-size:15px;color:var(--c-text-2);
}
.compare-td--ok{
  border-left:1px solid var(--c-line);background:#FBFDFF;
  color:var(--c-text);font-weight:600;
}
.compare-td--ok svg{flex:0 0 auto;color:var(--c-primary)}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 12px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;line-height:1;
}
.badge-primary{background:var(--c-primary-soft);color:var(--c-primary)}
.badge-accent{background:var(--c-accent);color:#20320A}
.badge-warn{background:#FFEDE6;color:#C2400F}
.badge-muted{background:#F0F3F7;color:var(--c-text-2)}

/* ---------- 结论条 ---------- */
.conclusion{
  display:flex;flex-wrap:wrap;align-items:center;gap:16px;
  margin-top:28px;padding:20px 24px;border-left:3px solid var(--c-primary);
  background:#fff;border-radius:0 var(--r-card) var(--r-card) 0;
  border-top:1px solid var(--c-border);border-right:1px solid var(--c-border);border-bottom:1px solid var(--c-border);
  font-size:15px;color:var(--c-text-2);
}
.conclusion strong{color:var(--c-text);font-weight:700}
.conclusion .hl{
  display:inline-flex;align-items:center;padding:2px 10px;border-radius:var(--r-pill);
  background:var(--c-accent);color:#20320A;font-weight:700;font-size:14px;
}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;align-items:start}
.faq{
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);
  transition:border-color var(--tr),box-shadow var(--tr);
}
.faq:hover{border-color:#C9DCF2;box-shadow:var(--sh-1)}
.faq summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:48px;padding:14px 20px;cursor:pointer;list-style:none;
  font-size:16px;font-weight:600;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"";flex:0 0 14px;width:14px;height:14px;
  --ic:var(--c-text-3);
  background:
    linear-gradient(var(--ic),var(--ic)) center/14px 2px no-repeat,
    linear-gradient(var(--ic),var(--ic)) center/2px 14px no-repeat;
  transition:transform 220ms ease-out;
}
.faq[open] summary::after{--ic:var(--c-primary);transform:rotate(45deg)}
.faq-body{padding:0 20px 20px;font-size:15px;color:var(--c-text-2)}
.faq-body p+p{margin-top:12px}

/* ---------- 相关分类 ---------- */
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.related-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--c-border);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);
  transition:transform var(--tr),box-shadow var(--tr),border-color var(--tr);
}
.related-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#D5E2F2}
.related-thumb{aspect-ratio:16/9;overflow:hidden;background:#EEF3F9}
.related-thumb img{width:100%;height:100%;object-fit:cover}
.related-body{padding:20px 24px 24px;display:flex;flex-direction:column;flex:1 1 auto}
.related-body h3{font-size:18px;font-weight:700;line-height:1.45;margin-top:12px}
.related-body p{font-size:14px;color:var(--c-text-2);margin-top:8px;flex:1 1 auto}
.related-body .link-arrow{margin-top:16px}

/* ---------- CTA ---------- */
.cta-band{background:var(--c-primary-soft);border-top:1px solid #D6E6F7;border-bottom:1px solid #D6E6F7}
.cta-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;padding:40px 0}
.cta-inner h2{font-size:24px;font-weight:700;line-height:1.4}
.cta-inner p{font-size:15px;color:var(--c-text-2);margin-top:10px;max-width:640px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- 页脚 ---------- */
.site-footer{background:#fff;border-top:1px solid var(--c-border);padding-top:56px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}
.footer-desc{font-size:12px;line-height:1.8;color:var(--c-text-3);margin-top:16px;max-width:300px}
.footer-title{font-size:14px;font-weight:700;color:var(--c-text);margin-bottom:14px}
.footer-links li{margin-bottom:2px}
.footer-links a{
  display:inline-block;font-size:13px;line-height:32px;color:var(--c-text-2);
  transition:color var(--tr);
}
.footer-links a:hover{color:var(--c-primary)}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  margin-top:48px;padding:20px 0;border-top:1px solid var(--c-line);
  font-size:12px;color:var(--c-text-3);
}

/* ---------- 移动抽屉 / 底部 Tab ---------- */
.drawer{
  position:fixed;inset:0;z-index:80;background:#fff;
  transform:translateY(-8px);opacity:0;visibility:hidden;
  transition:opacity 200ms ease-out,transform 200ms ease-out,visibility 200ms;
  overflow-y:auto;padding:16px 18px calc(88px + env(safe-area-inset-bottom));
}
.drawer.is-open{transform:none;opacity:1;visibility:visible}
.drawer-head{display:flex;align-items:center;justify-content:space-between;height:56px;border-bottom:1px solid var(--c-line)}
.drawer-close{
  width:40px;height:40px;border:1px solid var(--c-border);border-radius:var(--r-btn);
  background:#fff;display:flex;align-items:center;justify-content:center;font-size:18px;color:var(--c-text-2);
}
.drawer-group{margin-top:22px}
.drawer-group h4{font-size:13px;font-weight:600;color:var(--c-text-3);letter-spacing:.06em;margin-bottom:6px}
.drawer-link{
  display:flex;align-items:center;height:48px;padding:0 12px;border-radius:8px;
  font-size:15px;color:var(--c-text);border-left:3px solid transparent;
}
.drawer-link:hover{background:#F5F7FA}
.drawer-link.is-active{color:var(--c-primary);font-weight:600;background:var(--c-primary-soft);border-left-color:var(--c-primary)}
.drawer-actions{display:flex;gap:12px;margin-top:24px}

.mobile-tabbar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:#fff;border-top:1px solid var(--c-border);
  padding-bottom:env(safe-area-inset-bottom);
}
.mobile-tabbar ul{display:flex;height:56px}
.mobile-tabbar li{flex:1 1 0}
.tab-item{
  position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  height:100%;font-size:11px;color:var(--c-text-3);
}
.tab-item svg{width:22px;height:22px}
.tab-item.is-active{color:var(--c-primary);font-weight:600}
.tab-item.is-active::after{
  content:"";position:absolute;bottom:0;left:50%;transform:translateX(-50%);
  width:24px;height:2px;border-radius:2px;background:var(--c-primary);
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .hero-grid{gap:36px}
}
@media (max-width:1023px){
  .main-nav,.header-actions{display:none}
  .hamburger{display:flex;margin-left:auto}
  .mobile-tabbar{display:block}
  .site-footer{padding-bottom:72px}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-title{font-size:28px}
  .float-card{left:12px;bottom:-18px}
  .section{padding:64px 0}
  .grid-3,.related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cat-hero{padding:32px 0 44px}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .section{padding:48px 0}
  .section-title{font-size:22px;line-height:1.4}
  .grid-3,.related-grid,.faq-grid{grid-template-columns:1fr}
  .compare-row{grid-template-columns:1fr}
  .compare-th--active,.compare-td--ok{border-left:0;border-top:1px solid var(--c-line)}
  .compare-th{padding:14px 18px}
  .compare-td{padding:14px 18px;min-height:auto}
  .cta-inner{padding:32px 0}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .hero-title{font-size:24px}
  .hero-sub{font-size:15px}
  .card{padding:20px}
}
@media (max-width:520px){
  .brand-text strong{font-size:16px}
  .float-card{position:static;margin-top:14px;left:auto;bottom:auto}
  .btn{height:46px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}

/* roulang page: category2 */
:root{
  --c-primary:#0F5AA8;
  --c-primary-dark:#0B4784;
  --c-primary-soft:#E8F1FB;
  --c-accent:#B7F04A;
  --c-warn:#FF6B35;
  --c-text:#0E1726;
  --c-text-2:#48586B;
  --c-text-3:#7C8B9D;
  --c-bg:#F5F7FA;
  --c-card:#FFFFFF;
  --c-border:#E3E9F1;
  --c-line:#EEF2F7;
  --r-card:14px;
  --r-lg:18px;
  --r-btn:10px;
  --sh-1:0 1px 2px rgba(14,23,38,.06);
  --sh-2:0 10px 24px rgba(14,23,38,.10);
  --sec-desktop:88px;
  --sec-tablet:64px;
  --sec-mobile:48px;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body.site-body{
  margin:0;
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}
body.site-body img{max-width:100%;display:block;height:auto;}
body.site-body a{color:inherit;text-decoration:none;}
body.site-body ul{margin:0;padding:0;list-style:none;}
body.site-body h1,body.site-body h2,body.site-body h3,body.site-body h4,body.site-body p{margin:0;}
body.site-body button{font-family:inherit;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  border:1px solid transparent;
  transition:background-color .18s ease-out,color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
  white-space:nowrap;
}
.btn:focus-visible{outline:3px solid rgba(15,90,168,.3);outline-offset:2px;}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--c-primary-dark);transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-1);}
.btn-outline{background:#fff;color:var(--c-primary);border-color:var(--c-primary);}
.btn-outline:hover{background:var(--c-primary-soft);}
.btn-ghost{background:transparent;color:var(--c-text-2);}
.btn-ghost:hover{background:var(--c-line);color:var(--c-text);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn-block{width:100%;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--c-primary);font-size:14px;font-weight:600;}
.link-arrow svg{transition:transform .18s ease-out;}
.link-arrow:hover{color:var(--c-primary-dark);}
.link-arrow:hover svg{transform:translateX(2px);}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 12px;border-radius:999px;
  font-size:12px;font-weight:600;line-height:1.4;
}
.badge-primary{background:var(--c-primary-soft);color:var(--c-primary);}
.badge-accent{background:rgba(183,240,74,.35);color:#26530A;}
.badge-warn{background:rgba(255,107,53,.12);color:#B93F12;}
.badge-gray{background:var(--c-line);color:var(--c-text-2);}

/* ---------- 顶栏 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#fff;border-bottom:1px solid var(--c-border);
  transition:box-shadow .2s ease-out;
}
.site-header.is-scrolled{box-shadow:0 2px 12px rgba(14,23,38,.06);}
.header-inner{display:flex;align-items:center;gap:24px;height:68px;transition:height .2s ease-out;}
.site-header.is-scrolled .header-inner{height:60px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{display:inline-flex;}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:17px;font-weight:700;letter-spacing:.2px;color:var(--c-text);}
.brand-text em{font-style:normal;font-size:11px;color:var(--c-text-3);letter-spacing:.6px;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:8px;flex:1 1 auto;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  height:38px;padding:0 12px;border-radius:8px;
  font-size:14.5px;color:var(--c-text-2);font-weight:500;
  transition:color .18s ease-out,background-color .18s ease-out;
  white-space:nowrap;
}
.nav-link:hover{color:var(--c-primary);background:var(--c-primary-soft);}
.nav-link.is-active{color:var(--c-primary);font-weight:600;}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:-11px;height:2px;border-radius:2px;background:var(--c-primary);
}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:10px;border:1px solid var(--c-border);
  background:#fff;color:var(--c-text);cursor:pointer;
}
.nav-toggle:hover{background:var(--c-line);}

/* ---------- 移动抽屉 ---------- */
.drawer{
  display:none;position:fixed;inset:0;z-index:80;background:#fff;
  padding:20px 20px calc(24px + env(safe-area-inset-bottom));
  overflow-y:auto;
}
.drawer.is-open{display:block;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.drawer-close{
  width:42px;height:42px;border-radius:10px;border:1px solid var(--c-border);
  background:#fff;cursor:pointer;color:var(--c-text);
}
.drawer-group{margin-bottom:20px;}
.drawer-group h4{font-size:13px;font-weight:600;color:var(--c-text-3);margin-bottom:8px;letter-spacing:.4px;}
.drawer-link{
  display:flex;align-items:center;min-height:48px;padding:0 12px;border-radius:10px;
  border-left:3px solid transparent;font-size:15px;color:var(--c-text-2);
}
.drawer-link:hover{background:var(--c-line);}
.drawer-link.is-active{color:var(--c-primary);font-weight:600;background:var(--c-primary-soft);border-left-color:var(--c-primary);}
.drawer-cta{display:flex;flex-direction:column;gap:12px;margin-top:8px;}

/* ---------- 主内容 ---------- */
.site-main{display:block;}
.section{padding:var(--sec-desktop) 0;}
.section-alt{background:#fff;}
.section-title{font-size:30px;line-height:1.35;font-weight:700;letter-spacing:.2px;}
.section-sub{margin-top:12px;font-size:15px;color:var(--c-text-2);max-width:760px;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;}

/* ---------- 面包屑 ---------- */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12px;color:var(--c-text-3);margin-bottom:20px;}
.crumb a{color:var(--c-text-3);}
.crumb a:hover{color:var(--c-primary);}
.crumb .sep{color:#C7D2DE;}
.crumb .current{color:var(--c-primary);font-weight:600;}

/* ---------- 分类 Hero ---------- */
.cat-hero{
  position:relative;
  background-color:#fff;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center right;
  border-bottom:1px solid var(--c-border);
  padding:44px 0 52px;
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(255,255,255,.97) 0%,rgba(255,255,255,.92) 46%,rgba(255,255,255,.55) 100%);
}
.cat-hero .container{position:relative;z-index:1;}
.cat-hero-inner{display:grid;grid-template-columns:1.35fr .65fr;gap:40px;align-items:center;}
.page-title{font-size:40px;line-height:1.25;font-weight:700;margin-top:14px;letter-spacing:.2px;}
.lead{margin-top:16px;font-size:16px;color:var(--c-text-2);max-width:620px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
.hero-note{
  display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;
  font-size:12px;color:var(--c-text-3);
}
.hero-note span{display:inline-flex;align-items:center;gap:6px;}
.hero-note .dot{width:4px;height:4px;border-radius:50%;background:#C7D2DE;}
.hero-figure{border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1);background:#fff;}
.hero-figure img{width:100%;aspect-ratio:16/10;object-fit:cover;}

/* ---------- 步骤区 ---------- */
.steps-layout{display:grid;grid-template-columns:264px 1fr;gap:44px;align-items:start;}
.steps-nav{position:sticky;top:96px;background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);padding:18px;box-shadow:var(--sh-1);}
.steps-nav-title{font-size:13px;font-weight:600;color:var(--c-text-3);letter-spacing:.4px;margin-bottom:10px;}
.step-nav-item{
  position:relative;display:flex;align-items:center;gap:10px;
  padding:10px 8px 10px 4px;border-radius:8px;
  font-size:14px;color:var(--c-text-2);
  transition:background-color .18s ease-out,color .18s ease-out;
}
.step-nav-item:hover{background:var(--c-line);color:var(--c-text);}
.step-nav-item .dot{
  flex:0 0 auto;display:inline-flex;align-items:center;justify-content:center;
  width:24px;height:24px;border-radius:50%;
  background:var(--c-line);color:var(--c-text-3);
  font-size:12px;font-weight:700;
  transition:background-color .18s ease-out,color .18s ease-out;
}
.step-nav-item.is-active{color:var(--c-primary);font-weight:600;background:var(--c-primary-soft);}
.step-nav-item.is-active .dot{background:var(--c-primary);color:#fff;}

.step-list{display:flex;flex-direction:column;gap:20px;}
.step-card{
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--sh-1);
  transition:box-shadow .18s ease-out,border-color .18s ease-out,transform .18s ease-out;
  scroll-margin-top:96px;
}
.step-card:hover{box-shadow:var(--sh-2);border-color:#D6E1EE;transform:translateY(-2px);}
.step-head{display:flex;align-items:center;gap:14px;}
.step-num{
  flex:0 0 auto;display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:12px;
  background:var(--c-primary-soft);color:var(--c-primary);
  font-size:16px;font-weight:800;letter-spacing:.5px;
}
.step-head h3{font-size:20px;font-weight:600;line-height:1.45;}
.step-card p{margin-top:14px;font-size:16px;color:var(--c-text-2);}
.step-points{margin-top:16px;display:flex;flex-direction:column;gap:10px;}
.step-points li{
  position:relative;padding-left:22px;font-size:14px;color:var(--c-text-2);
  transition:color .18s ease-out;
}
.step-points li::before{
  content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:2px;background:var(--c-primary);opacity:.55;
}
.step-points li:hover{color:var(--c-text);}
.step-figure{margin-top:20px;border-radius:12px;overflow:hidden;border:1px solid var(--c-border);}
.step-figure img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.step-tip{
  margin-top:18px;display:flex;gap:10px;align-items:flex-start;
  background:var(--c-primary-soft);border-radius:10px;padding:12px 14px;
  font-size:13.5px;color:var(--c-text-2);
}
.step-tip strong{color:var(--c-primary);font-weight:600;}

/* ---------- 注意事项 ---------- */
.notes-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.note-panel{
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--sh-1);
}
.note-panel h3{font-size:20px;font-weight:600;display:flex;align-items:center;gap:10px;}
.note-panel .icon-round{
  display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:9px;
}
.icon-ok{background:var(--c-primary-soft);color:var(--c-primary);}
.icon-warn{background:rgba(255,107,53,.12);color:var(--c-warn);}
.note-list{margin-top:18px;display:flex;flex-direction:column;gap:14px;}
.note-list li{
  position:relative;padding-left:30px;font-size:14.5px;color:var(--c-text-2);line-height:1.7;
}
.note-list li svg{position:absolute;left:0;top:3px;}
.note-list li strong{color:var(--c-text);font-weight:600;}

/* ---------- 自检卡 ---------- */
.check-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.check-card{
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-1);
  transition:box-shadow .18s ease-out,transform .18s ease-out;
}
.check-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px);}
.check-card h3{font-size:16px;font-weight:600;margin-top:14px;line-height:1.5;}
.check-card p{margin-top:8px;font-size:13.5px;color:var(--c-text-2);}
.check-icon{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:10px;background:var(--c-primary-soft);color:var(--c-primary);
}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:800px;margin:0 auto;}
.faq-item{
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);
  margin-bottom:14px;overflow:hidden;
  transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.faq-item:hover{border-color:#C9DCF0;}
.faq-item.is-open{border-color:var(--c-primary);box-shadow:var(--sh-1);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:48px;padding:14px 20px;background:transparent;border:0;cursor:pointer;
  font-size:16px;font-weight:600;color:var(--c-text);text-align:left;
}
.faq-q:focus-visible{outline:3px solid rgba(15,90,168,.3);outline-offset:-3px;}
.faq-sign{
  flex:0 0 auto;display:inline-flex;align-items:center;justify-content:center;
  width:26px;height:26px;border-radius:8px;background:var(--c-line);color:var(--c-text-2);
  transition:transform .22s ease-out,background-color .22s ease-out,color .22s ease-out;
}
.faq-item.is-open .faq-sign{transform:rotate(45deg);background:var(--c-primary-soft);color:var(--c-primary);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s ease-out;}
.faq-a-inner{padding:0 20px 18px;font-size:15px;color:var(--c-text-2);}
.faq-a-inner p + p{margin-top:12px;}

/* ---------- CTA 通栏 ---------- */
.cta-band{background:var(--c-primary-soft);border-top:1px solid #D6E6F7;border-bottom:1px solid #D6E6F7;}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:28px;padding:36px 0;}
.cta-inner h2{font-size:24px;font-weight:700;line-height:1.4;}
.cta-inner p{margin-top:10px;font-size:14.5px;color:var(--c-text-2);max-width:640px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;flex:0 0 auto;}

/* ---------- 相关导航 ---------- */
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.related-card{
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:box-shadow .18s ease-out,transform .18s ease-out;
}
.related-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px);}
.related-card img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.related-body{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1 1 auto;}
.related-body h3{font-size:18px;font-weight:600;line-height:1.5;}
.related-body p{margin-top:8px;font-size:14px;color:var(--c-text-2);flex:1 1 auto;}
.related-body .link-arrow{margin-top:16px;}

/* ---------- 页脚 ---------- */
.site-footer{background:#fff;border-top:1px solid var(--c-border);padding:64px 0 32px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px;}
.footer-desc{margin-top:16px;font-size:13px;color:var(--c-text-2);max-width:300px;line-height:1.8;}
.footer-title{font-size:13px;font-weight:600;color:var(--c-text);letter-spacing:.4px;margin-bottom:14px;}
.footer-links li{line-height:32px;}
.footer-links a{font-size:13px;color:var(--c-text-2);transition:color .18s ease-out;}
.footer-links a:hover{color:var(--c-primary);}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.footer-bottom p{font-size:12px;color:var(--c-text-3);}

/* ---------- 移动底部 Tab ---------- */
.tabbar{display:none;}
@media (max-width:1023px){
  .tabbar{
    position:fixed;left:0;right:0;bottom:0;z-index:70;
    display:grid;grid-template-columns:repeat(5,1fr);
    background:#fff;border-top:1px solid var(--c-border);
    padding-bottom:env(safe-area-inset-bottom);
    box-shadow:0 -2px 12px rgba(14,23,38,.05);
  }
  .tab-item{
    display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
    height:56px;font-size:11px;color:var(--c-text-3);position:relative;
  }
  .tab-item svg{width:22px;height:22px;}
  .tab-item.is-active{color:var(--c-primary);font-weight:600;}
  .tab-item.is-active::after{
    content:"";position:absolute;bottom:0;left:50%;transform:translateX(-50%);
    width:26px;height:2px;border-radius:2px;background:var(--c-primary);
  }
  .site-main{padding-bottom:72px;}
}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .main-nav{display:none;}
  .header-actions{display:none;}
  .nav-toggle{display:inline-flex;margin-left:auto;}
  .section{padding:var(--sec-tablet) 0;}
  .cat-hero{padding:32px 0 40px;background-image:url('/assets/images/backpic/back-1.png');}
  .cat-hero-inner{grid-template-columns:1fr;gap:28px;}
  .page-title{font-size:30px;}
  .steps-layout{grid-template-columns:1fr;gap:24px;}
  .steps-nav{position:static;display:flex;gap:10px;overflow-x:auto;padding:12px;}
  .steps-nav-title{display:none;}
  .step-nav-item{flex:0 0 auto;background:var(--c-line);padding:8px 14px;border-radius:999px;font-size:13px;}
  .step-nav-item.is-active{background:var(--c-primary);color:#fff;}
  .step-nav-item.is-active .dot{background:rgba(255,255,255,.25);color:#fff;}
  .check-grid{grid-template-columns:repeat(2,1fr);}
  .related-grid{grid-template-columns:1fr 1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
}
@media (max-width:640px){
  .container{padding:0 16px;}
  .section{padding:var(--sec-mobile) 0;}
  .page-title{font-size:28px;}
  .section-title{font-size:22px;}
  .notes-grid{grid-template-columns:1fr;}
  .check-grid{grid-template-columns:1fr;}
  .related-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .step-card{padding:22px;}
  .btn{height:46px;width:100%;}
  .hero-actions{flex-direction:column;}
  .cta-actions{width:100%;flex-direction:column;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
  .step-card:hover,.related-card:hover,.check-card:hover{transform:none;}
}

/* roulang page: category3 */
:root{
  --c-primary:#0F5AA8;
  --c-primary-dark:#0B4784;
  --c-primary-soft:#E8F1FB;
  --c-accent:#B7F04A;
  --c-warn:#FF6B35;
  --c-text:#0E1726;
  --c-text-2:#48586B;
  --c-text-3:#7C8B9D;
  --c-bg:#F5F7FA;
  --c-card:#FFFFFF;
  --c-border:#E3E9F1;
  --c-line:#EEF2F7;
  --r-card:14px;
  --r-lg:18px;
  --r-btn:10px;
  --sh-1:0 1px 2px rgba(14,23,38,.06);
  --sh-2:0 10px 24px rgba(14,23,38,.10);
  --t:180ms ease-out;
}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
html body{
  margin:0;
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  padding-bottom:0;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:3px solid rgba(15,90,168,.32);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:80;background:#fff;border-bottom:1px solid var(--c-border);transition:box-shadow var(--t)}
.site-header.is-scrolled{box-shadow:0 2px 12px rgba(14,23,38,.06)}
.header-inner{display:flex;align-items:center;gap:20px;height:68px;transition:height var(--t)}
.site-header.is-scrolled .header-inner{height:60px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{display:flex;align-items:center}
.brand-text strong{display:block;font-size:17px;font-weight:700;line-height:1.15;letter-spacing:.01em;color:var(--c-text)}
.brand-text em{display:block;font-size:11px;font-style:normal;color:var(--c-text-3);letter-spacing:.14em;line-height:1.4}
.main-nav{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-link{position:relative;padding:8px 11px;font-size:13.5px;color:var(--c-text-2);border-radius:8px;white-space:nowrap;transition:color var(--t),background var(--t)}
.nav-link:hover{color:var(--c-primary);background:var(--c-primary-soft)}
.nav-link.is-active{color:var(--c-primary);font-weight:600}
.nav-link.is-active::after{content:"";position:absolute;left:11px;right:11px;bottom:-1px;height:2px;border-radius:2px;background:var(--c-primary)}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.nav-toggle{display:none;width:44px;height:44px;align-items:center;justify-content:center;background:#fff;border:1px solid var(--c-border);border-radius:10px;color:var(--c-text-2);cursor:pointer;transition:background var(--t),color var(--t)}
.nav-toggle:hover{background:var(--c-primary-soft);color:var(--c-primary)}
.mobile-drawer{display:none;border-top:1px solid var(--c-line);background:#fff;padding:12px 0 20px;max-height:calc(100vh - 68px);overflow-y:auto}
.mobile-drawer.is-open{display:block}
.drawer-group{padding:10px 24px 4px}
.drawer-title{font-size:13px;color:var(--c-text-3);letter-spacing:.06em;padding:8px 0}
.drawer-link{display:flex;align-items:center;height:48px;padding:0 14px;border-radius:10px;font-size:15px;color:var(--c-text-2);border-left:3px solid transparent}
.drawer-link:hover{background:var(--c-bg);color:var(--c-primary)}
.drawer-link.is-active{color:var(--c-primary);font-weight:600;border-left-color:var(--c-primary);background:var(--c-primary-soft)}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 20px;border-radius:var(--r-btn);font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;transition:background var(--t),color var(--t),box-shadow var(--t),transform var(--t),border-color var(--t)}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 1px 2px rgba(15,90,168,.24)}
.btn-primary:hover{background:var(--c-primary-dark);transform:translateY(-1px);box-shadow:0 8px 18px rgba(15,90,168,.22)}
.btn-primary:active{transform:translateY(0)}
.btn-outline{background:#fff;color:var(--c-primary);border-color:#BBD3EC}
.btn-outline:hover{background:var(--c-primary-soft);border-color:var(--c-primary)}
.btn-ghost{background:transparent;color:var(--c-text-2)}
.btn-ghost:hover{background:var(--c-bg);color:var(--c-primary)}
.btn-sm{height:38px;padding:0 14px;font-size:13.5px}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--c-primary);font-size:14px;font-weight:600}
.link-arrow svg{transition:transform var(--t)}
.link-arrow:hover svg{transform:translateX(3px)}

/* ---------- badges ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:999px;font-size:12px;font-weight:600;line-height:1.5}
.badge-blue{background:var(--c-primary-soft);color:var(--c-primary)}
.badge-gray{background:#F1F4F8;color:var(--c-text-2)}
.badge-accent{background:var(--c-accent);color:#1F2A10}
.badge-warn{background:#FFF0EA;color:#C5451A}

/* ---------- section ---------- */
.section{padding:88px 0}
.section-alt{background:#fff;border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}
.section-head{max-width:720px;margin-bottom:40px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-kicker{font-size:13px;font-weight:600;color:var(--c-primary);letter-spacing:.08em;margin-bottom:10px}
.section-title{font-size:30px;line-height:1.35;font-weight:700;letter-spacing:-.01em}
.section-sub{margin-top:14px;font-size:15px;color:var(--c-text-2);line-height:1.8}

/* ---------- hero ---------- */
.hero{background:#fff;border-bottom:1px solid var(--c-line);padding:56px 0 64px}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center}
.crumb{display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--c-text-3);margin-bottom:18px}
.crumb a:hover{color:var(--c-primary)}
.crumb .sep{color:#C3CDD9}
.crumb .current{color:var(--c-primary);font-weight:600}
.hero h1{font-size:40px;line-height:1.25;font-weight:700;letter-spacing:-.02em}
.hero-lead{margin-top:18px;font-size:16px;color:var(--c-text-2);line-height:1.85;max-width:560px}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-trust{margin-top:22px;font-size:12.5px;color:var(--c-text-3);letter-spacing:.02em}
.hero-trust span{white-space:nowrap}
.hero-trust i{font-style:normal;color:#C3CDD9;margin:0 8px}
.hero-visual{position:relative}
.hero-figure{position:relative;border-radius:var(--r-lg);overflow:hidden;aspect-ratio:16/10;background:var(--c-primary-soft);box-shadow:var(--sh-1)}
.hero-figure img{width:100%;height:100%;object-fit:cover}
.hero-float{position:absolute;left:-18px;bottom:-20px;display:flex;align-items:center;gap:14px;min-height:64px;padding:12px 20px 12px 16px;background:#fff;border-radius:12px;box-shadow:var(--sh-2)}
.hero-float::before{content:"";width:4px;align-self:stretch;border-radius:4px;background:var(--c-primary)}
.hero-float strong{display:block;font-size:15px;font-weight:700;font-variant-numeric:tabular-nums}
.hero-float span{display:block;font-size:12px;color:var(--c-text-3)}

/* ---------- metrics ---------- */
.metrics{display:grid;grid-template-columns:1.35fr 1fr 1fr 1fr;gap:24px;align-items:start}
.metric-card{background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-1);transition:transform var(--t),box-shadow var(--t)}
.metric-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.metric-card.is-wide{padding:28px}
.metric-value{font-size:44px;line-height:1.05;font-weight:800;color:var(--c-primary);font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.metric-value small{font-size:12px;font-weight:500;color:var(--c-text-3);margin-left:6px;letter-spacing:0}
.metric-name{margin-top:12px;font-size:14px;font-weight:600;color:var(--c-primary)}
.metric-desc{margin-top:6px;font-size:12.5px;color:var(--c-text-3);line-height:1.65}
.metric-bar{margin-top:18px;height:4px;border-radius:999px;background:var(--c-line);overflow:hidden}
.metric-bar i{display:block;height:100%;border-radius:999px;background:var(--c-primary)}
.metric-bar i.is-accent{background:var(--c-accent)}

/* ---------- data table ---------- */
.table-wrap{overflow-x:auto;border:1px solid var(--c-border);border-radius:var(--r-card);background:#fff;box-shadow:var(--sh-1)}
.data-table{width:100%;min-width:760px;border-collapse:collapse}
.data-table thead th{background:var(--c-primary-soft);color:var(--c-primary);font-size:13px;font-weight:600;text-align:left;padding:14px 20px;white-space:nowrap}
.data-table tbody td{padding:16px 20px;font-size:14px;color:var(--c-text-2);border-top:1px solid var(--c-line);vertical-align:middle}
.data-table tbody td:first-child{color:var(--c-text);font-weight:600}
.data-table tbody tr:nth-child(even){background:#FAFCFE}
.data-table tbody tr:hover{background:var(--c-primary-soft)}
.data-table td .mono{font-variant-numeric:tabular-nums;font-weight:600;color:var(--c-primary)}
.table-note{margin-top:14px;font-size:12.5px;color:var(--c-text-3)}

/* ---------- notes ---------- */
.notes{display:grid;gap:16px;max-width:920px;margin:0 auto}
.note-card{position:relative;display:flex;gap:18px;padding:26px;background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);box-shadow:var(--sh-1);transition:box-shadow var(--t),transform var(--t)}
.note-card::before{content:"";position:absolute;left:0;top:22px;bottom:22px;width:3px;border-radius:0 3px 3px 0;background:var(--c-primary);opacity:0;transition:opacity var(--t)}
.note-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.note-card:hover::before{opacity:1}
.note-icon{flex:0 0 auto;width:44px;height:44px;border-radius:12px;background:var(--c-primary-soft);color:var(--c-primary);display:flex;align-items:center;justify-content:center}
.note-body h3{font-size:18px;font-weight:700;line-height:1.45}
.note-body p{margin-top:10px;font-size:14.5px;color:var(--c-text-2);line-height:1.8}

/* ---------- faq ---------- */
.faq-list{display:grid;gap:12px;max-width:800px;margin:0 auto}
.faq-item{background:#fff;border:1px solid var(--c-border);border-radius:14px;overflow:hidden;transition:border-color var(--t),box-shadow var(--t)}
.faq-item:hover{border-color:#BCD6EE;box-shadow:var(--sh-1)}
.faq-q{display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%;min-height:52px;padding:14px 20px;background:none;border:0;text-align:left;font-size:15px;font-weight:600;color:var(--c-text);cursor:pointer;line-height:1.6}
.faq-icon{flex:0 0 auto;width:22px;height:22px;color:var(--c-text-3);transition:transform 220ms ease,color var(--t)}
.faq-item.is-open .faq-icon{transform:rotate(45deg);color:var(--c-primary)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 220ms ease}
.faq-a-inner{padding:0 20px 20px;font-size:14.5px;color:var(--c-text-2);line-height:1.85}

/* ---------- cta band ---------- */
.cta-band{position:relative;overflow:hidden;background:var(--c-primary-soft);border-radius:var(--r-lg);padding:32px 36px;display:flex;align-items:center;justify-content:space-between;gap:28px}
.cta-band::after{content:"";position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.png');background-size:cover;background-position:center;opacity:.08;pointer-events:none}
.cta-band>*{position:relative;z-index:1}
.cta-band h2{font-size:22px;font-weight:700;line-height:1.45}
.cta-band p{margin-top:8px;font-size:14px;color:var(--c-text-2)}

/* ---------- related ---------- */
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.rel-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);transition:transform var(--t),box-shadow var(--t),border-color var(--t)}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#CFE0F2}
.rel-thumb{aspect-ratio:16/9;background:var(--c-primary-soft);overflow:hidden}
.rel-thumb img{width:100%;height:100%;object-fit:cover}
.rel-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.rel-body h3{font-size:17px;font-weight:700;line-height:1.5}
.rel-body p{font-size:13.5px;color:var(--c-text-2);line-height:1.75}
.rel-body .link-arrow{margin-top:auto;padding-top:6px}

/* ---------- footer ---------- */
.site-footer{background:#fff;border-top:1px solid var(--c-border);padding:56px 0 24px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}
.footer-desc{margin-top:16px;font-size:12.5px;color:var(--c-text-3);line-height:1.85;max-width:300px}
.footer-title{font-size:13px;font-weight:700;color:var(--c-text);letter-spacing:.04em;margin-bottom:8px}
.footer-links li{line-height:32px}
.footer-links a{font-size:13px;color:var(--c-text-2);transition:color var(--t)}
.footer-links a:hover{color:var(--c-primary)}
.footer-bottom{margin-top:40px;padding-top:20px;border-top:1px solid var(--c-line);display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}
.footer-bottom p{font-size:12.5px;color:var(--c-text-3)}

/* ---------- mobile tabbar ---------- */
.mobile-tabbar{display:none}
@media (max-width:1023px){
  .mobile-tabbar{
    display:grid;grid-template-columns:repeat(5,1fr);
    position:fixed;left:0;right:0;bottom:0;z-index:90;
    background:#fff;border-top:1px solid var(--c-border);
    padding-bottom:env(safe-area-inset-bottom);
  }
  html body{padding-bottom:72px}
  .tab-item{position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;height:56px;font-size:11px;color:var(--c-text-3)}
  .tab-item svg{width:22px;height:22px;stroke-width:2}
  .tab-item.is-active{color:var(--c-primary);font-weight:600}
  .tab-item.is-active::after{content:"";position:absolute;bottom:0;width:24px;height:2px;border-radius:2px;background:var(--c-primary)}
}

/* ---------- responsive ---------- */
@media (max-width:1180px){
  .nav-link{padding:8px 8px;font-size:13px}
  .header-actions .btn-ghost{display:none}
}
@media (max-width:1023px){
  .main-nav,.header-actions{display:none}
  .nav-toggle{display:inline-flex;margin-left:auto}
  .section{padding:64px 0}
  .hero{padding:40px 0 52px}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero h1{font-size:32px}
  .hero-float{left:12px;bottom:-18px}
  .metrics{grid-template-columns:1fr 1fr}
  .metric-card.is-wide{grid-column:1 / -1}
  .related-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:639px){
  .container{padding:0 16px}
  .section{padding:48px 0}
  .hero h1{font-size:28px}
  .hero-lead{font-size:15px}
  .section-title{font-size:22px}
  .metrics{grid-template-columns:1fr}
  .metric-value{font-size:34px}
  .related-grid{grid-template-columns:1fr}
  .cta-band{flex-direction:column;align-items:flex-start;padding:26px 22px}
  .note-card{flex-direction:column;gap:14px;padding:22px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:8px}
  .btn{height:46px;width:100%}
  .hero-cta .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important}
}

/* roulang page: category4 */
:root{
  --c-primary:#0F5AA8;
  --c-primary-dark:#0B4784;
  --c-primary-light:#E8F1FB;
  --c-accent:#B7F04A;
  --c-warn:#FF6B35;
  --c-text:#0E1726;
  --c-text-2:#48586B;
  --c-text-3:#7C8B9D;
  --c-bg:#F5F7FA;
  --c-card:#FFFFFF;
  --c-border:#E3E9F1;
  --c-divider:#EEF2F7;
  --r-card:14px;
  --r-lg:18px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(14,23,38,.06);
  --sh-2:0 10px 24px rgba(14,23,38,.10);
  --ease:180ms ease-out;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--c-text);
  background:var(--c-bg);
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}
input,textarea{font-family:inherit}
ul,ol{list-style:none;margin:0;padding:0}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:3px solid rgba(15,90,168,.3);outline-offset:2px}

.container{max-width:1200px;margin:0 auto;padding:0 24px}

/* ---------- 顶栏 ---------- */
.site-header{
  position:sticky;top:0;z-index:50;background:#fff;
  border-bottom:1px solid var(--c-border);
  transition:box-shadow var(--ease);
}
.site-header.is-scrolled{box-shadow:0 2px 12px rgba(14,23,38,.06)}
.header-inner{display:flex;align-items:center;gap:20px;height:68px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{display:inline-flex;align-items:center;justify-content:center}
.brand-text{display:flex;flex-direction:column;line-height:1.1}
.brand-text strong{font-size:17px;font-weight:700;letter-spacing:.2px;color:var(--c-text)}
.brand-text em{font-style:normal;font-size:11px;color:var(--c-text-3);letter-spacing:.6px;margin-top:2px}

.main-nav{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  padding:8px 10px;font-size:14px;color:var(--c-text-2);border-radius:8px;
  transition:color var(--ease),background var(--ease);
  white-space:nowrap;
}
.nav-link:hover{color:var(--c-primary);background:var(--c-primary-light)}
.nav-link.is-active{color:var(--c-primary);font-weight:600}
.nav-link.is-active::after{
  content:"";position:absolute;left:10px;right:10px;bottom:-2px;height:2px;
  background:var(--c-primary);border-radius:2px;
}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;margin-left:8px}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--c-border);
  border-radius:10px;background:#fff;align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--c-text);position:relative;border-radius:2px}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--c-text);border-radius:2px
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:background var(--ease),color var(--ease),transform var(--ease),box-shadow var(--ease),border-color var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-primary-dark);transform:translateY(-1px);box-shadow:0 10px 24px rgba(15,90,168,.22)}
.btn-primary:active{transform:translateY(0)}
.btn-outline{background:#fff;color:var(--c-primary);border-color:var(--c-primary)}
.btn-outline:hover{background:var(--c-primary-light)}
.btn-ghost{background:transparent;color:var(--c-text-2)}
.btn-ghost:hover{background:var(--c-divider);color:var(--c-text)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--c-primary);font-weight:600;font-size:14px}
.link-arrow i{font-style:normal;transition:transform var(--ease)}
.link-arrow:hover i{transform:translateX(3px)}

/* ---------- 徽章 ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:var(--r-pill);font-size:12px;font-weight:600}
.badge-blue{background:var(--c-primary-light);color:var(--c-primary)}
.badge-gray{background:var(--c-divider);color:var(--c-text-2)}
.badge-green{background:var(--c-accent);color:#173207}
.badge-warn{background:rgba(255,107,53,.12);color:#B23F13}

/* ---------- 分类 Hero ---------- */
.cat-hero{position:relative;background:#fff;border-bottom:1px solid var(--c-border);overflow:hidden}
.cat-hero-bg{
  position:absolute;inset:0;
  background-image:url(/assets/images/backpic/back-2.png);
  background-size:cover;background-position:center;
  opacity:.16;
}
.cat-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(92deg,#FFFFFF 34%,rgba(255,255,255,.62) 68%,rgba(255,255,255,.30) 100%);
}
.cat-hero-inner{position:relative;z-index:2;padding:52px 0 46px;max-width:840px}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--c-text-3);margin-bottom:18px}
.breadcrumb a{color:var(--c-text-3)}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb .sep{color:#C3CDDA}
.breadcrumb .current{color:var(--c-primary);font-weight:600}
.cat-hero h1{
  font-size:40px;line-height:1.25;font-weight:700;letter-spacing:-.3px;
  color:var(--c-text);margin-bottom:14px;
}
.cat-hero-sub{font-size:16px;color:var(--c-text-2);max-width:640px;margin-bottom:22px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px}

/* ---------- 速览指标条 ---------- */
.quick-stats{background:#fff;border-bottom:1px solid var(--c-border)}
.quick-stats-inner{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;padding:26px 0}
.stat-item{display:flex;align-items:flex-start;gap:14px}
.stat-num{
  font-size:30px;font-weight:800;color:var(--c-primary);line-height:1.1;
  font-variant-numeric:tabular-nums;
}
.stat-info strong{display:block;font-size:14px;font-weight:600;color:var(--c-text)}
.stat-info span{display:block;font-size:12px;color:var(--c-text-3);margin-top:2px}

/* ---------- 主体板块 ---------- */
.section{padding:72px 0 0}
.section-head{max-width:720px;margin-bottom:32px}
.section-head h2{font-size:30px;line-height:1.35;font-weight:700;margin-bottom:12px}
.section-head p{font-size:15px;color:var(--c-text-2)}

.faq-layout{display:grid;grid-template-columns:236px minmax(0,1fr);gap:40px;align-items:start}

/* 目录 */
.toc{
  position:sticky;top:96px;background:#fff;border:1px solid var(--c-border);
  border-radius:var(--r-card);padding:20px;box-shadow:var(--sh-1);
}
.toc-title{font-size:12px;letter-spacing:.08em;color:var(--c-text-3);font-weight:700;margin-bottom:12px}
.toc-list li+li{margin-top:2px}
.toc-list a{
  display:block;position:relative;padding:9px 10px 9px 14px;border-radius:8px;
  font-size:13px;color:var(--c-text-2);transition:background var(--ease),color var(--ease);
}
.toc-list a::before{
  content:"";position:absolute;left:0;top:8px;bottom:8px;width:3px;border-radius:3px;
  background:transparent;transition:background var(--ease);
}
.toc-list a:hover{background:var(--c-primary-light);color:var(--c-primary)}
.toc-list a:hover::before,.toc-list a.is-current::before{background:var(--c-primary)}
.toc-list a.is-current{color:var(--c-primary);font-weight:600;background:var(--c-primary-light)}

/* FAQ */
.faq-group{margin-bottom:44px;scroll-margin-top:110px}
.faq-group:last-child{margin-bottom:0}
.faq-group-head{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.faq-group-head h3{font-size:20px;line-height:1.45;font-weight:700}
.faq-group-head .dot{width:10px;height:10px;border-radius:3px;background:var(--c-primary);flex:0 0 10px}
.faq-item{
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);
  margin-bottom:12px;overflow:hidden;box-shadow:var(--sh-1);
  transition:border-color var(--ease),box-shadow var(--ease),transform var(--ease);
}
.faq-item:hover{border-color:#C6DBF2;transform:translateY(-1px);box-shadow:var(--sh-2)}
.faq-item.is-open{border-color:var(--c-primary)}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  width:100%;min-height:58px;padding:10px 20px;background:none;border:0;
  text-align:left;font-size:16px;font-weight:600;color:var(--c-text);line-height:1.6;
}
.faq-icon{position:relative;width:18px;height:18px;flex:0 0 18px}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--c-text-3);border-radius:2px;
  transition:transform 220ms ease-out,background var(--ease),opacity 220ms ease-out;
}
.faq-icon::before{left:0;top:8px;width:18px;height:2px}
.faq-icon::after{left:8px;top:0;width:2px;height:18px}
.is-open .faq-icon::before{background:var(--c-primary)}
.is-open .faq-icon::after{transform:rotate(90deg);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height 220ms ease-out}
.faq-a-inner{padding:2px 20px 20px;font-size:15px;line-height:1.8;color:var(--c-text-2)}
.faq-a-inner p+p{margin-top:12px}
.faq-a-inner .hint{
  margin-top:14px;padding:12px 14px;background:var(--c-bg);border-left:3px solid var(--c-primary);
  border-radius:8px;font-size:13.5px;color:var(--c-text-2);
}
.faq-a-inner .hint b{color:var(--c-primary)}

/* 未解决卡片 */
.help-card{
  margin-top:8px;background:#fff;border:1px dashed #C6DBF2;border-radius:var(--r-lg);
  padding:28px;display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.help-card h3{font-size:20px;font-weight:700;margin-bottom:8px}
.help-card p{font-size:14px;color:var(--c-text-2);max-width:560px}

/* CTA 通栏 */
.cta-band{
  margin-top:72px;background:var(--c-primary-light);border-radius:var(--r-lg);
  padding:34px 32px;display:flex;align-items:center;justify-content:space-between;gap:28px;
}
.cta-band h2{font-size:24px;font-weight:700;margin-bottom:8px}
.cta-band p{font-size:14.5px;color:var(--c-text-2);max-width:620px}

/* 相关导航卡 */
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.rel-card{
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
  display:flex;flex-direction:column;
}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#C6DBF2}
.rel-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--c-divider)}
.rel-thumb img{width:100%;height:100%;object-fit:cover}
.rel-body{padding:20px 22px 22px}
.rel-body h3{font-size:17px;font-weight:700;margin-bottom:8px}
.rel-body p{font-size:13.5px;color:var(--c-text-2);margin-bottom:14px}

/* ---------- 页脚 ---------- */
.site-footer{background:#fff;border-top:1px solid var(--c-border);margin-top:80px;padding-top:56px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.footer-desc{font-size:12.5px;color:var(--c-text-3);margin-top:16px;line-height:1.8;max-width:320px}
.footer-title{font-size:14px;font-weight:700;margin-bottom:16px}
.footer-links li a{display:block;line-height:32px;font-size:13.5px;color:var(--c-text-2);transition:color var(--ease)}
.footer-links li a:hover{color:var(--c-primary)}
.footer-bottom{
  border-top:1px solid var(--c-divider);margin-top:40px;padding:20px 0 28px;
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:12.5px;color:var(--c-text-3);
}

/* ---------- 移动抽屉 ---------- */
.drawer{
  position:fixed;inset:0;background:#fff;z-index:80;
  transform:translateY(-100%);transition:transform 240ms ease-out;
  overflow-y:auto;padding:20px 0 calc(28px + env(safe-area-inset-bottom));
}
.drawer.is-open{transform:translateY(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:0 24px 18px;border-bottom:1px solid var(--c-divider)}
.drawer-close{
  width:42px;height:42px;border:1px solid var(--c-border);border-radius:10px;background:#fff;
  display:flex;align-items:center;justify-content:center;font-size:18px;color:var(--c-text-2);
}
.drawer-group{padding:18px 24px 0}
.drawer-group h4{font-size:13px;color:var(--c-text-3);font-weight:600;letter-spacing:.06em;margin-bottom:6px}
.drawer-link{
  display:flex;align-items:center;min-height:48px;padding:0 12px;font-size:15px;
  color:var(--c-text-2);border-radius:10px;position:relative;
}
.drawer-link:hover{background:var(--c-bg)}
.drawer-link.is-active{color:var(--c-primary);font-weight:600;background:var(--c-primary-light)}
.drawer-link.is-active::before{content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;border-radius:3px;background:var(--c-primary)}
.drawer-cta{padding:24px 24px 0;display:flex;flex-direction:column;gap:12px}

/* ---------- 移动底部 Tab ---------- */
.mobile-tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;display:flex;background:#fff;
  border-top:1px solid var(--c-border);padding-bottom:env(safe-area-inset-bottom);
}
.mobile-tabbar a{
  flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  height:56px;font-size:11px;color:var(--c-text-3);position:relative;
  transition:color var(--ease);
}
.mobile-tabbar a svg{width:22px;height:22px;stroke:currentColor}
.mobile-tabbar a.is-active{color:var(--c-primary)}
.mobile-tabbar a.is-active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:28px;height:2px;background:var(--c-primary);border-radius:0 0 2px 2px;
}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  body{padding-bottom:72px}
  .mobile-tabbar{display:flex}
  .main-nav,.header-actions{display:none}
  .nav-toggle{display:flex;margin-left:auto}
  .header-inner{height:62px}
  .site-header.is-scrolled .header-inner{height:58px}
  .cat-hero h1{font-size:30px}
  .cat-hero-inner{padding:36px 0 34px}
  .quick-stats-inner{grid-template-columns:1fr 1fr;gap:18px;padding:22px 0}
  .faq-layout{grid-template-columns:1fr;gap:24px}
  .toc{position:static;display:flex;gap:8px;overflow-x:auto;padding:14px;border-radius:var(--r-card)}
  .toc-title{display:none}
  .toc-list{display:flex;gap:8px}
  .toc-list li+li{margin-top:0}
  .toc-list a{white-space:nowrap;padding:8px 14px;background:var(--c-bg)}
  .toc-list a::before{display:none}
  .rel-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .section{padding:56px 0 0}
  .help-card{flex-direction:column;align-items:flex-start}
  .cta-band{flex-direction:column;align-items:flex-start;padding:28px 24px}
  .section-head h2{font-size:24px}
}
@media (max-width:640px){
  .container{padding:0 16px}
  .cat-hero h1{font-size:26px;line-height:1.3}
  .cat-hero-sub{font-size:15px}
  .quick-stats-inner{grid-template-columns:1fr;gap:14px}
  .btn{height:46px;width:100%}
  .btn-sm{height:42px}
  .header-actions .btn{width:auto}
  .rel-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .faq-q{font-size:15px;padding:12px 16px;min-height:54px}
  .faq-a-inner{padding:0 16px 18px}
  .footer-bottom{flex-direction:column;gap:6px}
  .cta-band h2{font-size:20px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}

/* roulang page: category5 */
:root{
    --c-primary:#0F5AA8;
    --c-primary-dark:#0B4784;
    --c-primary-soft:#E8F1FB;
    --c-accent:#B7F04A;
    --c-warn:#FF6B35;
    --c-ink:#0E1726;
    --c-ink-2:#48586B;
    --c-ink-3:#7C8B9D;
    --c-bg:#F5F7FA;
    --c-card:#FFFFFF;
    --c-border:#E3E9F1;
    --c-line:#EEF2F7;
    --r-card:14px;
    --r-lg:18px;
    --r-btn:10px;
    --sh-1:0 1px 2px rgba(14,23,38,.06);
    --sh-2:0 10px 24px rgba(14,23,38,.10);
    --sp-section:88px;
  }
  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
  body{
    margin:0;
    font-family:-apple-system,"PingFang SC","HarmonyOS Sans","Microsoft YaHei",sans-serif;
    font-size:16px;
    line-height:1.75;
    color:var(--c-ink);
    background:var(--c-bg);
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;border:0}
  a{color:inherit;text-decoration:none}
  button,input,textarea{font:inherit;color:inherit}
  ul,ol{margin:0;padding:0;list-style:none}
  h1,h2,h3,h4,p{margin:0}
  strong{font-weight:700}
  .num{font-variant-numeric:tabular-nums;letter-spacing:.2px}
  .container{max-width:1200px;margin:0 auto;padding:0 24px}
  .section{padding:var(--sp-section) 0}
  .section-alt{background:#FFFFFF}
  .section-head{max-width:760px;margin-bottom:40px}
  .section-head h2{font-size:30px;line-height:1.35;font-weight:700;letter-spacing:.2px}
  .section-head p{margin-top:14px;color:var(--c-ink-2);font-size:15.5px}
  .section-tag{
    display:inline-flex;align-items:center;gap:6px;
    font-size:12px;font-weight:600;color:var(--c-primary);
    background:var(--c-primary-soft);border-radius:999px;padding:6px 12px;margin-bottom:16px;
  }
  .section-tag::before{content:"";width:6px;height:6px;border-radius:2px;background:var(--c-primary);transform:rotate(45deg)}

  /* ---------- 顶部导航 ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;background:#fff;
    border-bottom:1px solid var(--c-border);
    transition:box-shadow .18s ease-out;
  }
  .site-header.is-scrolled{box-shadow:0 2px 12px rgba(14,23,38,.06)}
  .header-inner{display:flex;align-items:center;gap:20px;height:68px;transition:height .18s ease-out}
  .site-header.is-scrolled .header-inner{height:60px}
  .brand{display:inline-flex;align-items:center;gap:10px;flex:none}
  .brand-mark{display:inline-flex;width:32px;height:32px}
  .brand-text{display:flex;flex-direction:column;line-height:1.1}
  .brand-text strong{font-size:16px;font-weight:700;letter-spacing:.4px;color:var(--c-ink)}
  .brand-text em{font-style:normal;font-size:11px;color:var(--c-ink-3);letter-spacing:1.2px}
  .main-nav{display:none;align-items:center;gap:2px;margin-left:8px}
  .nav-link{
    position:relative;display:inline-block;padding:8px 10px;border-radius:8px;
    font-size:14px;color:var(--c-ink-2);white-space:nowrap;
    transition:color .18s ease-out,background .18s ease-out;
  }
  .nav-link::after{
    content:"";position:absolute;left:10px;right:10px;bottom:2px;height:2px;border-radius:2px;
    background:var(--c-primary);transform:scaleX(0);transform-origin:left;transition:transform .18s ease-out;
  }
  .nav-link:hover{color:var(--c-primary);background:var(--c-primary-soft)}
  .nav-link.is-active{color:var(--c-primary);font-weight:600}
  .nav-link.is-active::after{transform:scaleX(1)}
  .header-actions{display:none;align-items:center;gap:12px;margin-left:auto}
  .nav-toggle{
    margin-left:auto;width:44px;height:44px;border-radius:10px;border:1px solid var(--c-border);
    background:#fff;display:inline-flex;align-items:center;justify-content:center;cursor:pointer;
  }
  .nav-toggle span{display:block;width:18px;height:2px;background:var(--c-ink);border-radius:2px;position:relative}
  .nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--c-ink);border-radius:2px}
  .nav-toggle span::before{top:-6px}
  .nav-toggle span::after{top:6px}
  .drawer{
    position:fixed;inset:68px 0 0 0;background:#fff;z-index:55;
    transform:translateY(-8px);opacity:0;visibility:hidden;
    transition:opacity .2s ease-out,transform .2s ease-out,visibility .2s;
    overflow-y:auto;padding:20px 0 96px;
  }
  .drawer.is-open{opacity:1;visibility:visible;transform:translateY(0)}
  .drawer-group{padding:0 24px 18px}
  .drawer-title{font-size:13px;color:var(--c-ink-3);letter-spacing:1px;margin-bottom:6px}
  .drawer-link{
    display:flex;align-items:center;justify-content:space-between;
    height:48px;padding:0 12px;border-radius:10px;font-size:15px;color:var(--c-ink-2);
    border-left:3px solid transparent;
  }
  .drawer-link.is-active{color:var(--c-primary);font-weight:600;background:var(--c-primary-soft);border-left-color:var(--c-primary)}
  .drawer-cta{padding:8px 24px 0}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:46px;padding:0 20px;border-radius:var(--r-btn);border:1px solid transparent;
    font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
    transition:background .18s ease-out,color .18s ease-out,border-color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out;
  }
  .btn-primary{background:var(--c-primary);color:#fff}
  .btn-primary:hover{background:var(--c-primary-dark);transform:translateY(-1px);box-shadow:0 8px 18px rgba(15,90,168,.22)}
  .btn-primary:active{transform:translateY(0)}
  .btn-outline{background:#fff;border-color:var(--c-primary);color:var(--c-primary)}
  .btn-outline:hover{background:var(--c-primary-soft)}
  .btn-ghost{background:transparent;border-color:var(--c-border);color:var(--c-ink-2)}
  .btn-ghost:hover{background:#fff;border-color:#C9DCF2;color:var(--c-primary)}
  .btn-sm{height:40px;padding:0 16px;font-size:14px}
  .btn-block{width:100%}
  .btn:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(15,90,168,.30)}
  .text-link{
    display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--c-primary);
  }
  .text-link::after{content:"→";transition:transform .18s ease-out}
  .text-link:hover{color:var(--c-primary-dark)}
  .text-link:hover::after{transform:translateX(2px)}

  /* ---------- Hero ---------- */
  .cat-hero{
    position:relative;
    padding:44px 0 56px;
    border-bottom:1px solid var(--c-border);
    background-color:#fff;
    background-image:linear-gradient(94deg,rgba(255,255,255,.97) 0%,rgba(255,255,255,.90) 52%,rgba(245,247,250,.72) 100%),url('/assets/images/backpic/back-2.png');
    background-size:cover;
    background-position:center right;
  }
  .breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12px;color:var(--c-ink-3);margin-bottom:22px}
  .breadcrumb a:hover{color:var(--c-primary)}
  .breadcrumb .sep{color:#C6D1DE}
  .breadcrumb .current{color:var(--c-primary);font-weight:600}
  .cat-hero h1{font-size:40px;line-height:1.25;font-weight:700;max-width:820px;letter-spacing:.2px}
  .cat-hero .hero-sub{margin-top:16px;font-size:15.5px;color:var(--c-ink-2);max-width:700px}
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
  .hero-facts{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:26px;font-size:12px;color:var(--c-ink-3)}
  .hero-facts li{display:flex;align-items:center;gap:8px}
  .hero-facts li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-accent)}

  /* ---------- 对比矩阵 ---------- */
  .cmp{border:1px solid var(--c-border);border-radius:var(--r-lg);background:#fff;overflow:hidden;box-shadow:var(--sh-1)}
  .cmp-head{display:grid;grid-template-columns:1fr 1.35fr 1.35fr;background:var(--c-bg);border-bottom:1px solid var(--c-border)}
  .cmp-head > div{padding:16px 20px;font-size:14px;font-weight:600;color:var(--c-ink-2)}
  .cmp-head > div:nth-child(2){color:var(--c-ink-3);font-weight:500}
  .cmp-head .cmp-badge{
    display:inline-flex;align-items:center;margin-left:8px;
    background:var(--c-accent);color:#123A02;font-size:11px;font-weight:700;
    border-radius:999px;padding:2px 9px;line-height:1.6;
  }
  .cmp-row{display:grid;grid-template-columns:1fr 1.35fr 1.35fr;border-bottom:1px solid var(--c-line);transition:background .18s ease-out}
  .cmp-row:last-child{border-bottom:0}
  .cmp-row:hover{background:#FAFCFE}
  .cmp-row > div{padding:18px 20px;font-size:15px;color:var(--c-ink-2)}
  .cmp-key{font-weight:600;color:var(--c-ink-3);font-size:14px}
  .cmp-them{color:var(--c-ink-3)}
  .cmp-us{background:var(--c-primary-soft);color:var(--c-ink);font-weight:500}
  .cmp-us .tick{color:var(--c-primary);font-weight:700;margin-right:6px}

  /* ---------- 场景卡 ---------- */
  .scene-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
  .scene-card{
    background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);
    padding:26px;box-shadow:var(--sh-1);transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
  }
  .scene-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#D5E4F4}
  .scene-top{display:flex;align-items:center;gap:12px;margin-bottom:14px}
  .icon-box{
    width:40px;height:40px;border-radius:10px;background:var(--c-primary-soft);color:var(--c-primary);
    display:inline-flex;align-items:center;justify-content:center;flex:none;
  }
  .scene-card h3{font-size:19px;font-weight:600;line-height:1.45}
  .scene-card p{color:var(--c-ink-2);font-size:15px;margin-bottom:16px}

  /* ---------- 结论条 ---------- */
  .verdict{background:#fff;border:1px solid var(--c-border);border-radius:var(--r-lg);padding:28px 32px;display:flex;gap:22px;box-shadow:var(--sh-1)}
  .verdict::before{content:"";width:4px;border-radius:4px;background:var(--c-primary);flex:none}
  .verdict p{font-size:17px;line-height:1.8;color:var(--c-ink)}
  .hl{display:inline-block;background:var(--c-accent);color:#14390A;font-weight:800;border-radius:6px;padding:0 8px;font-variant-numeric:tabular-nums}
  .verdict small{display:block;margin-top:10px;font-size:12px;color:var(--c-ink-3)}

  /* ---------- 核查顺序 ---------- */
  .step-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
  .step-card{background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);padding:26px;position:relative;overflow:hidden}
  .step-index{
    display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:10px;
    background:var(--c-primary);color:#fff;font-size:15px;font-weight:700;margin-bottom:16px;font-variant-numeric:tabular-nums;
  }
  .step-card h3{font-size:18px;font-weight:600;margin-bottom:10px}
  .step-card p{font-size:15px;color:var(--c-ink-2)}
  .step-card::after{content:"";position:absolute;left:0;bottom:0;height:4px;width:100%;background:var(--c-line)}
  .step-card:nth-child(2)::after{background:var(--c-accent)}

  /* ---------- FAQ ---------- */
  .faq-list{max-width:800px;margin:0 auto;display:grid;gap:14px}
  .faq-item{background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);transition:border-color .18s ease-out,box-shadow .18s ease-out}
  .faq-item:hover{border-color:#C9DCF2}
  .faq-item[open]{border-color:var(--c-primary);box-shadow:var(--sh-1)}
  .faq-q{
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:15px 20px;font-size:16px;font-weight:600;cursor:pointer;list-style:none;
  }
  .faq-q::-webkit-details-marker{display:none}
  .faq-q::after{content:"+";color:var(--c-primary);font-size:22px;line-height:1;transition:transform .22s ease-out}
  .faq-item[open] .faq-q::after{transform:rotate(45deg)}
  .faq-a{padding:0 20px 18px;font-size:15px;color:var(--c-ink-2)}
  .faq-a p + p{margin-top:12px}

  /* ---------- CTA 表单 ---------- */
  .cta-band{background:var(--c-primary-soft);border-radius:var(--r-lg);padding:40px;display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
  .cta-band h2{font-size:26px;line-height:1.4;font-weight:700}
  .cta-band .cta-desc{margin-top:14px;color:var(--c-ink-2);font-size:15px}
  .cta-points{margin-top:22px;display:grid;gap:10px}
  .cta-points li{display:flex;gap:10px;font-size:15px;color:var(--c-ink-2)}
  .cta-points li::before{content:"✓";color:var(--c-primary);font-weight:700}
  .form-card{background:#fff;border-radius:var(--r-card);padding:26px;box-shadow:var(--sh-1)}
  .field{margin-bottom:16px}
  .field label{display:block;font-size:13px;color:var(--c-ink-2);margin-bottom:6px}
  .field input,.field textarea{
    width:100%;height:48px;padding:0 14px;border:1px solid var(--c-border);border-radius:var(--r-btn);
    background:#fff;font-size:15px;transition:border-color .18s ease-out,box-shadow .18s ease-out;
  }
  .field textarea{height:110px;padding:12px 14px;resize:vertical;line-height:1.7}
  .field input:focus,.field textarea:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(15,90,168,.20)}
  .form-note{margin-top:12px;font-size:12px;color:var(--c-ink-3)}
  .form-ok{margin-top:12px;font-size:13px;color:var(--c-primary);background:var(--c-primary-soft);border-radius:8px;padding:10px 12px}

  /* ---------- 相关导航 ---------- */
  .related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
  .related-card{
    background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);overflow:hidden;
    box-shadow:var(--sh-1);transition:transform .18s ease-out,box-shadow .18s ease-out;
  }
  .related-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
  .related-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--c-line)}
  .related-thumb img{width:100%;height:100%;object-fit:cover}
  .related-body{padding:20px}
  .related-body h3{font-size:17px;font-weight:600;margin-bottom:8px}
  .related-body p{font-size:14px;color:var(--c-ink-2);margin-bottom:14px}

  /* ---------- 页脚 ---------- */
  .site-footer{background:#fff;border-top:1px solid var(--c-border);padding:56px 0 24px;font-size:13px}
  .footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.2fr;gap:32px}
  .footer-desc{margin-top:16px;font-size:13px;color:var(--c-ink-2);line-height:1.8;max-width:320px}
  .footer-title{font-size:14px;font-weight:600;color:var(--c-ink);margin-bottom:12px}
  .footer-links li{margin-bottom:6px}
  .footer-links a{display:inline-block;padding:4px 0;color:var(--c-ink-2);transition:color .18s ease-out}
  .footer-links a:hover{color:var(--c-primary)}
  .footer-bottom{
    display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
    margin-top:36px;padding-top:20px;border-top:1px solid var(--c-line);
    color:var(--c-ink-3);font-size:12px;
  }

  /* ---------- 移动底部 Tab ---------- */
  .mobile-tabbar{display:none}
  .mobile-tabbar a{
    display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
    flex:1;font-size:10.5px;color:var(--c-ink-3);position:relative;padding-top:6px;
  }
  .mobile-tabbar a svg{width:21px;height:21px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
  .mobile-tabbar a.is-active{color:var(--c-primary);font-weight:600}
  .mobile-tabbar a.is-active::after{content:"";position:absolute;top:0;width:22px;height:2px;border-radius:2px;background:var(--c-primary)}

  /* ---------- 响应式 ---------- */
  @media (min-width:1024px){
    .main-nav{display:flex}
    .header-actions{display:flex}
    .nav-toggle{display:none}
    .drawer{display:none}
  }
  @media (max-width:1180px){
    .header-actions .btn-ghost{display:none}
  }
  @media (max-width:1023px){
    :root{--sp-section:64px}
    .cat-hero{padding:32px 0 44px}
    .cat-hero h1{font-size:32px}
    .cta-band{grid-template-columns:1fr;gap:28px;padding:28px}
    .related-grid{grid-template-columns:repeat(2,1fr)}
    .step-grid{grid-template-columns:1fr 1fr}
    .scene-grid{grid-template-columns:1fr}
    .footer-grid{grid-template-columns:1fr 1fr;gap:26px}
    body{padding-bottom:calc(56px + env(safe-area-inset-bottom))}
    .mobile-tabbar{
      display:flex;position:fixed;left:0;right:0;bottom:0;z-index:70;
      background:#fff;border-top:1px solid var(--c-border);
      height:calc(56px + env(safe-area-inset-bottom));
      padding-bottom:env(safe-area-inset-bottom);
    }
  }
  @media (max-width:767px){
    .container{padding:0 16px}
    :root{--sp-section:48px}
    .cat-hero h1{font-size:28px}
    .section-head h2{font-size:22px}
    .cmp-head{display:none}
    .cmp-row{grid-template-columns:1fr;padding:16px 0;border-bottom:1px solid var(--c-line)}
    .cmp-row > div{padding:6px 18px}
    .cmp-row > div::before{
      content:attr(data-label);display:block;font-size:12px;color:var(--c-ink-3);margin-bottom:2px;font-weight:500;
    }
    .cmp-us{margin:8px 12px 0;border-radius:10px;border-left:3px solid var(--c-primary);padding:12px 14px}
    .cmp-head + .cmp-row{border-top:0}
    .step-grid{grid-template-columns:1fr}
    .related-grid{grid-template-columns:1fr}
    .footer-grid{grid-template-columns:1fr}
    .verdict{padding:22px 20px;gap:16px}
    .verdict p{font-size:16px}
    .scene-card{padding:22px}
  }
  @media (prefers-reduced-motion:reduce){
    *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
  }