/* roulang page: index */
:root{
  --bg:#F5F8FD;
  --surface:#FFFFFF;
  --surface-2:#EEF3FB;
  --ink-900:#101A2B;
  --ink-600:#4A5A72;
  --ink-400:#8494A8;
  --line:#E4EAF2;
  --brand-600:#1F5FD0;
  --brand-500:#2E74E8;
  --brand-50:#EAF2FE;
  --accent-500:#F08A24;
  --accent-50:#FFF3E4;
  --ok:#12A150;
  --danger:#D94A4A;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-1:0 1px 2px rgba(16,26,43,.04), 0 6px 18px rgba(16,26,43,.06);
  --shadow-2:0 2px 4px rgba(16,26,43,.06), 0 14px 28px rgba(16,26,43,.10);
  --cubic:180ms ease;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,"Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink-600);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--brand-600);text-decoration:none;transition:color var(--cubic);}
a:hover{color:var(--brand-500);}
a:focus-visible,button:focus-visible,.accordion-title:focus-visible{
  outline:2px solid var(--accent-500);
  outline-offset:2px;
  border-radius:6px;
}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;letter-spacing:0;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;border:0;background:none;}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
.grid-margin-x{margin-left:-12px;margin-right:-12px;}
.grid-margin-x>.cell{padding-left:12px;padding-right:12px;}
.grid-margin-y{margin-top:-12px;margin-bottom:-12px;}
.grid-margin-y>.cell{padding-top:12px;padding-bottom:12px;}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(255,255,255,.96);
  backdrop-filter:saturate(180%) blur(6px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:20px;
  height:68px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  color:var(--ink-900);
  font-weight:700;
  font-size:17px;
  letter-spacing:-.01em;
}
.brand:hover{color:var(--ink-900);}
.brand-mark{
  width:36px;height:36px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:11px;
  background:linear-gradient(135deg,var(--brand-600),var(--brand-500));
  color:#fff;
  font-size:16px;
  box-shadow:0 4px 12px rgba(31,95,208,.28);
}
.brand-text{white-space:nowrap;}
.main-nav{
  display:flex;
  align-items:center;
  gap:2px;
  margin-left:12px;
  flex:1 1 auto;
}
.nav-link{
  position:relative;
  display:inline-block;
  padding:8px 12px;
  border-radius:8px;
  font-size:15px;
  font-weight:500;
  color:var(--ink-600);
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:2px;
  height:2px;
  border-radius:2px;
  background:var(--brand-600);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform var(--cubic);
}
.nav-link:hover{color:var(--brand-600);background:var(--brand-50);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--brand-600);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 22px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  line-height:1;
  border:1px solid transparent;
  transition:background-color var(--cubic),color var(--cubic),border-color var(--cubic),transform var(--cubic),box-shadow var(--cubic);
  cursor:pointer;
}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:0 6px 16px rgba(31,95,208,.22);}
.btn-primary:hover{background:var(--brand-500);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(31,95,208,.26);}
.btn-primary:active{background:var(--brand-600);transform:translateY(0);box-shadow:0 4px 10px rgba(31,95,208,.2);}
.btn-ghost{background:#fff;color:var(--brand-600);border-color:var(--line);}
.btn-ghost:hover{background:var(--brand-50);border-color:var(--brand-600);color:var(--brand-600);}
.btn-ghost:active{background:var(--brand-50);transform:translateY(0);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-block{width:100%;}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--brand-600);
}
.text-link:hover{text-decoration:underline;text-underline-offset:3px;}

/* ============ 移动菜单 ============ */
.menu-toggle{
  display:none;
  width:42px;height:42px;
  border-radius:10px;
  border:1px solid var(--line);
  background:#fff;
  color:var(--ink-900);
  font-size:16px;
  align-items:center;justify-content:center;
}
.menu-toggle:hover{border-color:var(--brand-600);color:var(--brand-600);}
.mobile-panel{
  display:none;
  border-top:1px solid var(--line);
  background:#fff;
  padding:8px 0 16px;
}
.mobile-panel.is-open{display:block;}
.mobile-panel .container{display:block;}
.mobile-panel a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:48px;
  font-size:15px;
  font-weight:500;
  color:var(--ink-600);
  border-bottom:1px solid var(--line);
}
.mobile-panel a:last-of-type{border-bottom:0;}
.mobile-panel a.is-active{color:var(--brand-600);font-weight:600;}
.mobile-panel .btn{margin-top:12px;height:46px;}

/* ============ Hero ============ */
.hero{
  position:relative;
  background-image:linear-gradient(90deg,rgba(255,255,255,.97) 0%,rgba(255,255,255,.86) 42%,rgba(255,255,255,.28) 100%),url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center right;
  background-repeat:no-repeat;
  border-bottom:1px solid var(--line);
}
.hero-inner{padding-top:64px;padding-bottom:64px;}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;
  border-radius:999px;
  background:var(--brand-50);
  color:var(--brand-600);
  font-size:13px;
  font-weight:600;
  margin-bottom:18px;
}
.hero h1{
  font-size:clamp(30px,4.2vw,46px);
  line-height:1.25;
  font-weight:700;
  letter-spacing:-.01em;
  max-width:15em;
}
.hero-sub{
  margin-top:16px;
  font-size:18px;
  line-height:1.7;
  color:var(--ink-600);
  max-width:34em;
}
.hero-actions{
  display:flex;flex-wrap:wrap;gap:12px;
  margin-top:28px;
}
.hero-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px 18px;
  margin-top:20px;
  font-size:14px;
  color:var(--ink-400);
}
.hero-meta span{display:inline-flex;align-items:center;gap:6px;}
.hero-meta i{color:var(--brand-600);font-size:13px;}

.quick-card{
  background:var(--surface);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-2);
  border:1px solid var(--line);
  overflow:hidden;
}
.quick-card-top{
  height:4px;
  background:linear-gradient(90deg,var(--brand-600),var(--brand-500) 55%,var(--accent-500));
}
.quick-card-head{
  padding:18px 22px 12px;
  border-bottom:1px solid var(--line);
}
.quick-card-head strong{display:block;font-size:16px;color:var(--ink-900);}
.quick-card-head span{font-size:13px;color:var(--ink-400);}
.quick-list{padding:6px 8px 10px;}
.quick-item{
  display:flex;align-items:center;gap:12px;
  padding:11px 14px;
  border-radius:10px;
  color:var(--ink-600);
  font-size:15px;
  transition:background-color var(--cubic),color var(--cubic);
}
.quick-item i.q-icon{
  width:32px;height:32px;flex:0 0 32px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:9px;
  background:var(--brand-50);
  color:var(--brand-600);
  font-size:14px;
}
.quick-item span{flex:1 1 auto;font-weight:500;}
.quick-item i.q-arrow{font-size:12px;color:var(--ink-400);}
.quick-item:hover{background:var(--brand-50);color:var(--brand-600);}
.quick-item:hover i.q-arrow{color:var(--brand-600);}

/* ============ 速查条 ============ */
.lookup-bar{
  background:var(--surface);
  border-bottom:1px solid var(--line);
}
.lookup-inner{
  display:flex;
  align-items:center;
  gap:12px;
  flex-wrap:wrap;
  padding:16px 0;
}
.lookup-label{font-size:14px;color:var(--ink-400);font-weight:600;margin-right:4px;}
.chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 16px;
  border-radius:999px;
  background:var(--surface-2);
  border:1px solid var(--line);
  color:var(--ink-600);
  font-size:14px;
  font-weight:500;
  transition:background-color var(--cubic),border-color var(--cubic),color var(--cubic),transform var(--cubic);
}
.chip i{font-size:12px;color:var(--brand-600);}
.chip:hover{background:var(--brand-50);border-color:var(--brand-600);color:var(--brand-600);transform:translateY(-1px);}
.chip:active{transform:translateY(0);}

/* ============ 通用板块 ============ */
.section{padding:76px 0;}
.section-alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px;
  margin-bottom:32px;
  flex-wrap:wrap;
}
.section-head h2{
  font-size:clamp(24px,3vw,30px);
  line-height:1.35;
  font-weight:700;
}
.section-head p{
  margin-top:8px;
  font-size:15px;
  color:var(--ink-400);
  max-width:52em;
}
.section-head .head-side{flex:0 0 auto;}
.section-badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;
  border-radius:999px;
  background:var(--accent-50);
  color:var(--accent-500);
  font-size:12px;
  font-weight:700;
}

/* ============ 合集目录卡 ============ */
.cat-card{
  display:flex;
  flex-direction:column;
  height:100%;
  padding:24px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);
  color:var(--ink-600);
  transition:transform var(--cubic),box-shadow var(--cubic),border-color var(--cubic);
}
.cat-card:hover{
  transform:translateY(-2px);
  box-shadow:var(--shadow-2);
  border-color:#D5E2F7;
  color:var(--ink-600);
}
.cat-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px;}
.cat-index{
  width:46px;height:46px;flex:0 0 46px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:50%;
  background:var(--brand-50);
  color:var(--brand-600);
  font-size:17px;
  font-weight:700;
  letter-spacing:-.02em;
  transition:background-color var(--cubic),color var(--cubic);
}
.cat-card:hover .cat-index{background:var(--brand-600);color:#fff;}
.cat-card h3{font-size:18px;line-height:1.5;font-weight:600;margin-bottom:10px;}
.cat-card p{font-size:14px;line-height:1.8;color:var(--ink-600);margin-bottom:16px;}
.cat-foot{
  margin-top:auto;
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding-top:14px;
  border-top:1px solid var(--line);
}
.count-badge{
  display:inline-flex;align-items:center;gap:5px;
  padding:3px 10px;
  border-radius:999px;
  background:var(--accent-50);
  color:var(--accent-500);
  font-size:12px;
  font-weight:700;
}
.cat-foot .go{font-size:13px;font-weight:600;color:var(--brand-600);display:inline-flex;align-items:center;gap:6px;}

/* ============ 精选条目 ============ */
.pick-list{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);
  overflow:hidden;
}
.pick-item{
  display:flex;
  gap:18px;
  padding:18px 20px;
  border-bottom:1px solid var(--line);
  color:var(--ink-600);
  transition:background-color var(--cubic);
}
.pick-item:last-child{border-bottom:0;}
.pick-item:hover{background:rgba(234,242,254,.62);color:var(--ink-600);}
.pick-thumb{
  width:120px;height:84px;flex:0 0 120px;
  border-radius:10px;
  object-fit:cover;
  background:var(--surface-2);
  border:1px solid var(--line);
}
.pick-body{flex:1 1 auto;min-width:0;}
.pick-body h3{font-size:17px;font-weight:600;line-height:1.5;margin-bottom:6px;}
.pick-body p{
  font-size:14px;
  color:var(--ink-600);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
  margin-bottom:10px;
}
.pick-tags{display:flex;flex-wrap:wrap;gap:8px;align-items:center;}
.tag{
  display:inline-flex;align-items:center;
  padding:3px 10px;
  border-radius:999px;
  background:var(--surface-2);
  border:1px solid var(--line);
  color:var(--ink-400);
  font-size:12px;
  font-weight:500;
}
.pick-time{font-size:13px;color:var(--ink-400);display:inline-flex;align-items:center;gap:6px;}

/* ============ CMS 资讯列表 ============ */
.cms-card{
  display:flex;
  flex-direction:column;
  height:100%;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);
  padding:22px;
  transition:transform var(--cubic),box-shadow var(--cubic),border-color var(--cubic);
}
.cms-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#D5E2F7;}
.cms-card .cms-head{display:flex;align-items:center;gap:10px;margin-bottom:14px;flex-wrap:wrap;}
.cms-cat{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;
  border-radius:999px;
  background:var(--brand-50);
  color:var(--brand-600);
  font-size:12px;
  font-weight:600;
}
.cms-card h3{font-size:17px;font-weight:600;line-height:1.55;margin-bottom:10px;}
.cms-card h3 a{color:var(--ink-900);}
.cms-card h3 a:hover{color:var(--brand-600);}
.cms-card .cms-summary{
  font-size:14px;
  line-height:1.8;
  color:var(--ink-600);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
  margin-bottom:18px;
}
.cms-foot{
  margin-top:auto;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding-top:14px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--ink-400);
}
.cms-foot time{display:inline-flex;align-items:center;gap:6px;}
.cms-foot .go{color:var(--brand-600);font-weight:600;display:inline-flex;align-items:center;gap:6px;}
.cms-foot .go:hover{text-decoration:underline;text-underline-offset:3px;}

.empty-state{
  border:1px dashed var(--line);
  border-radius:var(--radius-card);
  background:var(--surface);
  padding:48px 24px;
  text-align:center;
}
.empty-state i{font-size:40px;color:var(--ink-400);margin-bottom:14px;display:block;}
.empty-state p{font-size:15px;color:var(--ink-600);margin-bottom:16px;}

.list-more{display:flex;justify-content:center;margin-top:28px;}

/* ============ 相关推荐 ============ */
.rel-card{
  display:flex;
  flex-direction:column;
  height:100%;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-1);
  color:var(--ink-600);
  transition:transform var(--cubic),box-shadow var(--cubic);
}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);color:var(--ink-600);}
.rel-card img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  background:var(--surface-2);
  border-bottom:1px solid var(--line);
}
.rel-body{padding:20px;display:flex;flex-direction:column;flex:1 1 auto;}
.rel-body h3{font-size:17px;font-weight:600;margin-bottom:8px;line-height:1.5;}
.rel-body p{font-size:14px;line-height:1.8;margin-bottom:14px;}
.rel-body .go{margin-top:auto;font-size:13px;font-weight:600;color:var(--brand-600);display:inline-flex;align-items:center;gap:6px;}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px;margin:0 auto;}
.accordion{border:0;background:transparent;margin:0;padding:0;list-style:none;}
.accordion-item{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  margin-bottom:12px;
  overflow:hidden;
  box-shadow:var(--shadow-1);
  position:relative;
  transition:border-color var(--cubic),box-shadow var(--cubic);
}
.accordion-item::before{
  content:"";
  position:absolute;
  left:0;top:0;bottom:0;
  width:4px;
  background:var(--brand-600);
  transform:scaleY(0);
  transform-origin:top center;
  transition:transform var(--cubic);
}
.accordion-item.is-open::before{transform:scaleY(1);}
.accordion-title{
  display:block;
  width:100%;
  text-align:left;
  padding:18px 56px 18px 22px;
  font-size:16px;
  font-weight:600;
  color:var(--ink-900);
  line-height:1.6;
  position:relative;
  background:var(--surface);
  border:0;
  transition:background-color var(--cubic),color var(--cubic);
}
.accordion-title:hover{background:var(--brand-50);color:var(--brand-600);}
.accordion-title::after{
  content:"+";
  position:absolute;
  right:22px;top:50%;
  transform:translateY(-50%);
  font-size:20px;
  font-weight:500;
  color:var(--brand-600);
  line-height:1;
  transition:transform var(--cubic);
}
.accordion-item.is-open .accordion-title::after{content:"−";transform:translateY(-50%) rotate(0deg);}
.accordion-content{
  display:none;
  padding:0 22px 20px;
  font-size:15px;
  line-height:1.85;
  color:var(--ink-600);
  border-top:1px solid var(--line);
  padding-top:16px;
}
.accordion-item.is-open .accordion-content{display:block;}

/* ============ CTA 条 ============ */
.cta-band{
  background:var(--brand-50);
  border-radius:var(--radius-card);
  padding:28px 32px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  flex-wrap:wrap;
}
.cta-band .cta-text strong{display:block;font-size:18px;font-weight:700;color:var(--ink-900);margin-bottom:4px;}
.cta-band .cta-text span{font-size:14px;color:var(--ink-600);}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--ink-900);
  color:#A9B6C9;
  padding:64px 0 0;
  margin-top:0;
}
.footer-grid{display:flex;flex-wrap:wrap;}
.footer-col{flex:1 1 25%;min-width:0;}
.footer-brand{
  display:inline-flex;align-items:center;gap:10px;
  color:#fff;font-weight:700;font-size:17px;margin-bottom:14px;
}
.footer-brand .brand-mark{background:linear-gradient(135deg,var(--brand-500),var(--brand-600));}
.footer-about{font-size:14px;line-height:1.85;color:#93A2B8;max-width:30em;margin-bottom:16px;}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px;}
.footer-tags span{
  display:inline-flex;padding:3px 10px;
  border-radius:999px;
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.12);
  font-size:12px;
  color:#B9C5D6;
}
.footer-title{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;}
.footer-links li{margin-bottom:10px;}
.footer-links a{font-size:14px;color:#93A2B8;}
.footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.footer-contact li{font-size:14px;color:#93A2B8;margin-bottom:10px;display:flex;gap:8px;align-items:flex-start;}
.footer-contact i{color:var(--brand-500);margin-top:5px;font-size:13px;}
.footer-bottom{
  margin-top:48px;
  border-top:1px solid rgba(255,255,255,.10);
  padding:20px 0 24px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  flex-wrap:wrap;
  font-size:13px;
  color:#8494A8;
}
.footer-bottom a{color:#8494A8;}
.footer-bottom a:hover{color:#fff;}

/* ============ 移动底部 Tab ============ */
.bottom-tab{display:none;}
.toast{
  position:fixed;
  left:50%;bottom:96px;
  transform:translate(-50%,12px);
  background:var(--ink-900);
  color:#fff;
  font-size:14px;
  padding:10px 20px;
  border-radius:999px;
  box-shadow:var(--shadow-2);
  opacity:0;
  pointer-events:none;
  transition:opacity var(--cubic),transform var(--cubic);
  z-index:120;
}
.toast.is-show{opacity:1;transform:translate(-50%,0);}

/* ============ 响应式 ============ */
@media screen and (max-width:1023px){
  .main-nav{margin-left:4px;}
  .nav-link{padding:8px 10px;font-size:14px;}
  .header-actions .btn{display:none;}
  .section{padding:60px 0;}
}
@media screen and (max-width:767px){
  body{padding-bottom:76px;}
  .container{padding-left:16px;padding-right:16px;}
  .header-inner{height:60px;gap:12px;}
  .main-nav{display:none;}
  .menu-toggle{display:inline-flex;}
  .brand-text{font-size:16px;}
  .hero-inner{padding-top:32px;padding-bottom:36px;}
  .hero{background-image:linear-gradient(180deg,rgba(255,255,255,.96) 0%,rgba(255,255,255,.9) 60%,rgba(255,255,255,.82) 100%),url('/assets/images/backpic/back-1.png');background-position:center;}
  .hero h1{font-size:28px;}
  .hero-sub{font-size:16px;}
  .hero-actions .btn{flex:1 1 auto;}
  .quick-card{margin-top:20px;}
  .section{padding:48px 0;}
  .section-head{margin-bottom:22px;}
  .pick-item{flex-direction:column;gap:12px;}
  .pick-thumb{width:100%;height:150px;flex:0 0 auto;}
  .cta-band{padding:22px;flex-direction:column;align-items:stretch;}
  .cta-actions .btn{flex:1 1 auto;}
  .site-footer{padding-top:48px;}
  .footer-col{flex:1 1 50%;margin-bottom:28px;}
  .footer-col:first-child{flex:1 1 100%;}
  .footer-bottom{margin-top:12px;}
  .bottom-tab{
    display:flex;
    position:fixed;
    left:0;right:0;bottom:0;
    z-index:90;
    background:#fff;
    border-top:1px solid var(--line);
    box-shadow:0 -4px 16px rgba(16,26,43,.08);
    padding-bottom:env(safe-area-inset-bottom);
  }
  .tab-item{
    position:relative;
    flex:1 1 0;
    height:56px;
    display:flex;
    flex-direction:column;
    align-items:center;
    justify-content:center;
    gap:2px;
    font-size:10px;
    color:var(--ink-400);
    font-weight:500;
  }
  .tab-item i{font-size:19px;}
  .tab-item::before{
    content:"";
    position:absolute;
    top:0;left:50%;
    width:28px;height:2px;
    margin-left:-14px;
    border-radius:0 0 2px 2px;
    background:linear-gradient(90deg,var(--brand-600),var(--brand-500));
    opacity:0;
    transition:opacity var(--cubic);
  }
  .tab-item.is-active{color:var(--brand-600);font-weight:600;}
  .tab-item.is-active::before{opacity:1;}
}
@media screen and (max-width:520px){
  .hero h1{font-size:25px;line-height:1.3;}
  .section-head h2{font-size:22px;}
  .cat-card{padding:20px;}
  .footer-col{flex:1 1 100%;}
  .quick-item{padding:10px 10px;}
  .hero-actions{flex-direction:column;align-items:stretch;}
}

/* roulang page: article */
:root{
  --bg:#F5F8FD;
  --surface:#FFFFFF;
  --surface-2:#EEF3FB;
  --ink-900:#101A2B;
  --ink-600:#4A5A72;
  --ink-400:#8494A8;
  --line:#E4EAF2;
  --brand-600:#1F5FD0;
  --brand-500:#2E74E8;
  --brand-50:#EAF2FE;
  --accent-500:#F08A24;
  --accent-50:#FFF3E4;
  --ok:#12A150;
  --danger:#D94A4A;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-1:0 1px 2px rgba(16,26,43,.04), 0 6px 18px rgba(16,26,43,.06);
  --shadow-2:0 2px 4px rgba(16,26,43,.06), 0 14px 28px rgba(16,26,43,.10);
  --ease:180ms ease;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  background:var(--bg);
  color:var(--ink-600);
  font-size:16px;
  line-height:1.85;
  padding-bottom:76px;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;line-height:1.4}
p{margin:0 0 1em}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block;background:var(--surface-2)}
ul,ol{margin:0;padding:0}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--accent-500);outline-offset:2px;border-radius:4px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 16px}
@media (min-width:640px){.container{padding:0 24px}}
@media (min-width:1024px){.container{padding:0 32px}}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#fff;
  border-bottom:1px solid var(--line);
  box-shadow:0 1px 0 rgba(16,26,43,.02);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:66px}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:var(--ink-900);letter-spacing:-.01em}
.brand-mark{
  width:36px;height:36px;border-radius:10px;
  background:var(--brand-600);color:#fff;
  display:grid;place-items:center;font-size:15px;
  box-shadow:0 6px 14px rgba(31,95,208,.26);
  transition:background var(--ease), transform var(--ease);
}
.brand:hover .brand-mark{background:var(--brand-500);transform:translateY(-1px)}
.brand-text{white-space:nowrap}

.main-nav{display:none;align-items:center;gap:2px}
@media (min-width:900px){.main-nav{display:flex}}
.main-nav .nav-link{
  position:relative;display:inline-flex;align-items:center;height:66px;
  padding:0 13px;font-size:15px;font-weight:500;color:var(--ink-600);
  transition:color var(--ease);
}
.main-nav .nav-link::after{
  content:"";position:absolute;left:13px;right:13px;bottom:0;height:2px;
  background:var(--brand-600);border-radius:2px;
  transform:scaleX(0);transform-origin:center;transition:transform var(--ease);
}
.main-nav .nav-link:hover{color:var(--brand-600)}
.main-nav .nav-link:hover::after{transform:scaleX(1)}
.main-nav .nav-link.is-active{color:var(--brand-600);font-weight:600}
.main-nav .nav-link.is-active::after{transform:scaleX(1)}

.header-actions{display:flex;align-items:center;gap:10px}
.header-actions .btn-primary{display:none}
@media (min-width:768px){.header-actions .btn-primary{display:inline-flex}}

.nav-toggle{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:10px;
  background:#fff;border:1px solid var(--line);color:var(--ink-600);
  font-size:16px;cursor:pointer;transition:all var(--ease);
}
.nav-toggle:hover{border-color:var(--brand-600);color:var(--brand-600);background:var(--brand-50)}
@media (min-width:900px){.nav-toggle{display:none}}

.mobile-panel{
  display:none;border-top:1px solid var(--line);background:#fff;
  padding:8px 16px 18px;
}
.mobile-panel.is-open{display:block}
.mobile-panel a.m-panel-link{
  display:flex;align-items:center;justify-content:space-between;
  height:48px;font-size:15px;color:var(--ink-600);
  border-bottom:1px solid var(--line);
}
.mobile-panel a.m-panel-link:last-of-type{border-bottom:0}
.mobile-panel a.m-panel-link i{color:var(--ink-400);font-size:12px}
.mobile-panel a.m-panel-link.is-active{color:var(--brand-600);font-weight:600}
.mobile-panel .btn{width:100%;margin-top:14px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:all var(--ease);white-space:nowrap;
}
.btn-primary{background:var(--brand-600);color:#fff}
.btn-primary:hover{background:var(--brand-500);color:#fff;transform:translateY(-1px);box-shadow:0 10px 20px rgba(31,95,208,.22)}
.btn-primary:active{transform:none;background:var(--brand-600);box-shadow:none}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--brand-600)}
.btn-ghost:hover{background:var(--brand-50);border-color:var(--brand-600)}
.btn-ghost:active{background:var(--brand-50);transform:none}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-block{width:100%}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 12px;border-radius:999px;
  font-size:12px;font-weight:600;line-height:1;
}
.badge-brand{background:var(--brand-50);color:var(--brand-600)}
.badge-accent{background:var(--accent-50);color:var(--accent-500)}
.badge-plain{background:var(--surface-2);color:var(--ink-600)}

/* ---------- 面包屑 ---------- */
.crumb-wrap{padding-top:20px}
.breadcrumb{font-size:13px;color:var(--ink-400)}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;list-style:none}
.breadcrumb li{display:flex;align-items:center;gap:8px;min-width:0}
.breadcrumb li:not(:last-child)::after{content:"/";color:#C6D2E2}
.breadcrumb a{color:var(--ink-400);transition:color var(--ease)}
.breadcrumb a:hover{color:var(--brand-600);text-decoration:underline;text-underline-offset:3px}
.breadcrumb .current{color:var(--ink-600);font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:190px}
@media (min-width:640px){.breadcrumb .current{max-width:420px}}

/* ---------- 文章头部 ---------- */
.article-head{max-width:820px;padding:20px 0 26px}
.article-head h1{
  font-size:clamp(26px,3.6vw,40px);
  line-height:1.32;
  letter-spacing:-.01em;
  margin-bottom:18px;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 16px;font-size:13px;color:var(--ink-400)}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:6px}
.article-meta .meta-item i{color:var(--brand-600);font-size:13px}
.article-divider{height:1px;background:var(--line);border:0;margin:0}

/* ---------- 文章布局 ---------- */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:32px;padding:30px 0 56px}
@media (min-width:1024px){
  .article-layout{grid-template-columns:minmax(0,1fr) 262px;gap:48px;padding:36px 0 72px}
}
.article-main{max-width:760px;width:100%}

.article-body{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);
  padding:26px 20px;
}
@media (min-width:768px){.article-body{padding:42px 46px}}
.article-body > *:first-child{margin-top:0}
.article-body p{font-size:16px;line-height:1.9;color:var(--ink-600);margin:0 0 1.2em}
.article-body h2{
  font-size:clamp(20px,2.3vw,26px);
  margin:2em 0 .6em;line-height:1.4;
}
.article-body h3{font-size:18px;font-weight:600;margin:1.6em 0 .5em;line-height:1.5}
.article-body h4{font-size:16px;font-weight:600;margin:1.4em 0 .4em}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.2em}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin-bottom:.5em;font-size:16px;line-height:1.85}
.article-body strong{color:var(--ink-900);font-weight:600}
.article-body a{color:var(--brand-600);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--brand-500)}
.article-body blockquote{
  margin:1.4em 0;padding:16px 20px;
  border-left:4px solid var(--brand-600);
  background:var(--brand-50);
  border-radius:0 12px 12px 0;
  color:var(--ink-600);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--radius-img);margin:1.5em auto;height:auto}
.article-body figure{margin:1.5em 0}
.article-body figcaption{font-size:13px;color:var(--ink-400);text-align:center;margin-top:8px}
.article-body table{width:100%;border-collapse:collapse;margin:1.4em 0;font-size:15px}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left}
.article-body th{background:var(--surface-2);color:var(--ink-900);font-weight:600}
.article-body code{background:var(--surface-2);border-radius:6px;padding:2px 6px;font-size:14px;color:var(--brand-600)}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2em 0}

.article-empty{text-align:center;padding:56px 24px}
.empty-icon{
  width:64px;height:64px;margin:0 auto 18px;border-radius:18px;
  display:grid;place-items:center;
  background:var(--surface-2);color:var(--brand-600);font-size:26px;
}
.empty-title{font-size:18px;font-weight:700;color:var(--ink-900);margin-bottom:8px}
.empty-desc{font-size:14px;color:var(--ink-400);margin:0 auto 22px;max-width:420px}

/* ---------- 侧栏 ---------- */
.article-aside{display:none}
@media (min-width:1024px){.article-aside{display:block}}
.aside-card{
  position:sticky;top:88px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);
  padding:20px 20px 16px;
}
.aside-card + .aside-card{margin-top:20px;position:static}
.aside-title{
  display:flex;align-items:center;gap:8px;
  font-size:14px;font-weight:700;color:var(--ink-900);
  padding-bottom:12px;margin-bottom:12px;border-bottom:1px solid var(--line);
}
.aside-title i{color:var(--brand-600);font-size:13px}
.aside-list{list-style:none}
.aside-list li + li{margin-top:2px}
.aside-list a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:9px 10px;border-radius:8px;font-size:14px;color:var(--ink-600);
  transition:all var(--ease);
}
.aside-list a:hover{background:var(--brand-50);color:var(--brand-600)}
.aside-list a i{font-size:11px;color:var(--ink-400);transition:color var(--ease)}
.aside-list a:hover i{color:var(--brand-600)}

/* ---------- 关键词标签 ---------- */
.tag-block{margin-top:30px}
.tag-block-title{font-size:14px;font-weight:700;color:var(--ink-900);margin-bottom:12px}
.tags{display:flex;flex-wrap:wrap;gap:10px}
.tag{
  display:inline-flex;align-items:center;
  padding:6px 14px;border-radius:999px;
  background:var(--surface);border:1px solid var(--line);
  font-size:13px;color:var(--ink-600);
  transition:all var(--ease);
}
.tag:hover{background:var(--brand-50);border-color:var(--brand-600);color:var(--brand-600)}

/* ---------- 相关推荐 ---------- */
.related{padding:8px 0 0}
.section-head{margin-bottom:24px}
.section-head h2{font-size:clamp(21px,2.4vw,28px);line-height:1.35}
.section-head p{font-size:14px;color:var(--ink-400);margin:8px 0 0}
.related-grid{display:grid;grid-template-columns:1fr;gap:20px}
@media (min-width:640px){.related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1024px){.related-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
.related-card{
  display:flex;flex-direction:column;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.related-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#D6E2F5}
.related-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--surface-2)}
.related-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 260ms ease}
.related-card:hover .related-thumb img{transform:scale(1.04)}
.related-body{padding:18px 18px 20px;display:flex;flex-direction:column;flex:1}
.related-body h3{font-size:17px;font-weight:600;line-height:1.5;margin-bottom:8px}
.related-body p{font-size:14px;line-height:1.7;color:var(--ink-600);margin:0 0 14px}
.related-more{margin-top:auto;font-size:14px;font-weight:600;color:var(--brand-600);display:inline-flex;align-items:center;gap:6px}
.related-card:hover .related-more i{transform:translateX(3px)}
.related-more i{transition:transform var(--ease)}

/* ---------- CTA 条 ---------- */
.cta-bar{
  margin-top:40px;
  background:var(--brand-50);
  border-radius:var(--radius-card);
  padding:24px 22px;
  display:flex;flex-direction:column;gap:18px;
}
@media (min-width:768px){
  .cta-bar{flex-direction:row;align-items:center;justify-content:space-between;padding:26px 32px;gap:24px}
}
.cta-text{font-size:18px;font-weight:700;color:var(--ink-900);line-height:1.5}
.cta-text span{display:block;font-size:13px;font-weight:400;color:var(--ink-400);margin-top:6px}
.cta-actions{display:flex;flex-direction:column;gap:12px}
@media (min-width:520px){.cta-actions{flex-direction:row}}
@media (min-width:768px){.cta-actions{flex-shrink:0}}

.back-link{
  display:inline-flex;align-items:center;gap:8px;margin-top:24px;
  font-size:14px;font-weight:600;color:var(--brand-600);
}
.back-link:hover{text-decoration:underline;text-underline-offset:3px}

/* ---------- 页脚 ---------- */
.site-footer{background:#fff;border-top:1px solid var(--line);padding:56px 0 0;margin-top:64px}
.footer-grid{row-gap:32px}
.footer-brand{display:inline-flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:var(--ink-900);margin-bottom:14px}
.footer-about{font-size:14px;line-height:1.8;color:var(--ink-600);margin:0 0 16px}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px}
.footer-tags span{font-size:12px;padding:5px 12px;border-radius:999px;background:var(--surface-2);color:var(--ink-600);border:1px solid var(--line)}
.footer-title{font-size:15px;font-weight:700;color:var(--ink-900);margin-bottom:16px}
.footer-links{list-style:none}
.footer-links li{margin-bottom:10px}
.footer-links a{font-size:14px;color:var(--ink-400);transition:color var(--ease)}
.footer-links a:hover{color:var(--brand-600);text-decoration:underline;text-underline-offset:3px}
.footer-contact{list-style:none}
.footer-contact li{display:flex;gap:10px;font-size:14px;color:var(--ink-400);margin-bottom:10px;line-height:1.6}
.footer-contact li i{color:var(--brand-600);margin-top:5px;flex-shrink:0}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:8px;justify-content:space-between;
  border-top:1px solid var(--line);margin-top:40px;padding:20px 0 28px;
  font-size:13px;color:var(--ink-400);
}

/* ---------- 移动端底部 Tab ---------- */
.mobile-tabs{
  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(--line);
  box-shadow:0 -4px 16px rgba(16,26,43,.06);
  padding-bottom:env(safe-area-inset-bottom);
}
.tab-item{
  position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  height:56px;font-size:10px;color:var(--ink-400);transition:color var(--ease);
}
.tab-item i{font-size:19px}
.tab-item:hover{color:var(--brand-600)}
.tab-item.is-active{color:var(--brand-600);font-weight:600}
.tab-item.is-active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:26px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand-500),var(--accent-500));
}
@media (min-width:768px){
  .mobile-tabs{display:none}
  body{padding-bottom:0}
}

/* roulang page: category1 */
:root{
  --bg:#F5F8FD;
  --surface:#FFFFFF;
  --surface-2:#EEF3FB;
  --ink-900:#101A2B;
  --ink-600:#4A5A72;
  --ink-400:#8494A8;
  --line:#E4EAF2;
  --brand-600:#1F5FD0;
  --brand-500:#2E74E8;
  --brand-50:#EAF2FE;
  --accent-500:#F08A24;
  --accent-50:#FFF3E4;
  --ok:#12A150;
  --danger:#D94A4A;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-1:0 1px 2px rgba(16,26,43,.04), 0 6px 18px rgba(16,26,43,.06);
  --shadow-2:0 2px 4px rgba(16,26,43,.06), 0 14px 28px rgba(16,26,43,.10);
  --font:-apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
}

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

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

body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--ink-600);
  background:var(--bg);
  padding-bottom:76px;
}

h1,h2,h3,h4{ margin:0; color:var(--ink-900); line-height:1.35; font-weight:700; }
h1{ font-size:clamp(30px,4.2vw,46px); line-height:1.25; letter-spacing:-0.01em; }
h2{ font-size:clamp(22px,3vw,28px); }
h3{ font-size:18px; line-height:1.5; font-weight:600; }
p{ margin:0; }
ul{ margin:0; padding:0; list-style:none; }
a{ color:inherit; text-decoration:none; }
img{ max-width:100%; display:block; }
button{ font:inherit; cursor:pointer; color:inherit; }
input{ font:inherit; }

a:focus-visible,button:focus-visible,input:focus-visible{
  outline:2px solid var(--accent-500);
  outline-offset:2px;
  border-radius:8px;
}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 16px;
}
@media (min-width:640px){ .container{ padding:0 24px; } }
@media (min-width:1024px){ .container{ padding:0 32px; } }

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:#fff;
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  height:66px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:17px;
  font-weight:700;
  color:var(--ink-900);
  white-space:nowrap;
}
.brand-mark{
  width:34px;
  height:34px;
  border-radius:9px;
  background:var(--brand-600);
  color:#fff;
  display:grid;
  place-items:center;
  font-size:15px;
  flex:0 0 auto;
}
.main-nav{
  display:none;
  align-items:center;
  gap:2px;
}
@media (min-width:1024px){
  .main-nav{ display:flex; }
}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:66px;
  padding:0 14px;
  font-size:15px;
  color:var(--ink-600);
  transition:color 180ms ease;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:14px;
  right:14px;
  bottom:0;
  height:2px;
  background:var(--brand-600);
  transform:scaleX(0);
  transition:transform 180ms ease;
  border-radius:2px;
}
.nav-link:hover{ color:var(--brand-600); }
.nav-link:hover::after,
.nav-link.is-active::after{ transform:scaleX(1); }
.nav-link.is-active{ color:var(--brand-600); font-weight:600; }

.header-actions{ display:flex; align-items:center; gap:10px; }
.header-cta{ display:none; }
@media (min-width:1024px){ .header-cta{ display:inline-flex; } }
.menu-toggle{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:42px;
  height:42px;
  border:1px solid var(--line);
  border-radius:var(--radius-btn);
  background:#fff;
  color:var(--ink-900);
  transition:background 180ms ease, border-color 180ms ease, color 180ms ease;
}
.menu-toggle:hover{ background:var(--brand-50); border-color:var(--brand-600); color:var(--brand-600); }
@media (min-width:1024px){ .menu-toggle{ display:none; } }

.mobile-menu{
  display:none;
  border-top:1px solid var(--line);
  background:#fff;
  padding:10px 0 16px;
}
.mobile-menu.is-open{ display:block; }
.mobile-menu .menu-link{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:48px;
  padding:0 16px;
  font-size:15.5px;
  color:var(--ink-600);
  border-radius:10px;
}
.mobile-menu .menu-link:hover{ background:var(--brand-50); color:var(--brand-600); }
.mobile-menu .menu-link.is-active{ color:var(--brand-600); font-weight:600; }
.mobile-menu .menu-cta{ margin:12px 16px 0; display:flex; }
@media (min-width:1024px){ .mobile-menu{ display:none !important; } }

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:11px 20px;
  border-radius:var(--radius-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  transition:background 180ms ease, color 180ms ease, border-color 180ms ease, transform 180ms ease, box-shadow 180ms ease;
}
.btn-primary{ background:var(--brand-600); color:#fff; }
.btn-primary:hover{ background:var(--brand-500); transform:translateY(-1px); box-shadow:0 10px 20px rgba(31,95,208,.22); }
.btn-primary:active{ transform:none; background:var(--brand-600); box-shadow:none; }
.btn-ghost{ background:#fff; border-color:var(--line); color:var(--brand-600); }
.btn-ghost:hover{ background:var(--brand-50); border-color:var(--brand-600); }
.btn-ghost:active{ background:var(--brand-50); }
.btn-sm{ padding:8px 14px; font-size:14px; }
.btn-block{ width:100%; }

.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--brand-600);
  font-size:14px;
  font-weight:600;
}
.text-link:hover{ text-decoration:underline; text-underline-offset:3px; }

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 12px;
  border-radius:999px;
  font-size:12.5px;
  font-weight:600;
  line-height:1.4;
}
.badge-brand{ background:var(--brand-50); color:var(--brand-600); }
.badge-accent{ background:var(--accent-50); color:var(--accent-500); }
.badge-soft{ background:var(--surface-2); color:var(--ink-600); }

/* ---------- 通用板块 ---------- */
.section{ padding:44px 0; }
@media (min-width:1024px){ .section{ padding:78px 0; } }
.section-soft{ background:#fff; border-top:1px solid var(--line); border-bottom:1px solid var(--line); }
.section-head{ margin-bottom:24px; }
@media (min-width:1024px){ .section-head{ margin-bottom:32px; } }
.section-head .eyebrow{
  display:inline-block;
  font-size:13px;
  font-weight:600;
  letter-spacing:.06em;
  color:var(--brand-600);
  margin-bottom:8px;
}
.section-desc{ margin-top:10px; font-size:15.5px; color:var(--ink-600); max-width:760px; }

/* ---------- 页面头 ---------- */
.page-hero{
  position:relative;
  background-image:linear-gradient(100deg, rgba(255,255,255,.97) 0%, rgba(255,255,255,.90) 46%, rgba(255,255,255,.58) 100%), url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
}
.page-hero-inner{ padding:30px 0 34px; }
@media (min-width:1024px){ .page-hero-inner{ padding:54px 0 58px; } }
.crumbs{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13.5px;
  color:var(--ink-400);
  margin-bottom:16px;
  flex-wrap:wrap;
}
.crumbs a{ color:var(--ink-400); }
.crumbs a:hover{ color:var(--brand-600); text-decoration:underline; text-underline-offset:3px; }
.crumb-sep{ color:var(--line); }
.hero-title{ margin-bottom:12px; }
.hero-sub{ font-size:clamp(16px,1.6vw,18px); color:var(--ink-600); max-width:640px; }
.hero-meta{ display:flex; flex-wrap:wrap; gap:10px; margin-top:20px; }
.hero-visual{
  margin-top:26px;
  border-radius:var(--radius-card);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow-1);
  background:var(--surface-2);
}
.hero-visual img{ width:100%; height:220px; object-fit:cover; }
@media (min-width:640px){ .hero-visual img{ height:260px; } }
@media (min-width:1024px){ .hero-visual{ margin-top:0; } .hero-visual img{ height:280px; } }

/* ---------- 编号索引 ---------- */
.layout-grid{ display:flex; flex-wrap:wrap; gap:24px; }
.layout-main{ flex:1 1 100%; min-width:0; }
.layout-side{ flex:1 1 100%; min-width:0; }
@media (min-width:1024px){
  .layout-main{ flex:1 1 700px; max-width:calc(100% - 340px); }
  .layout-side{ flex:0 0 316px; max-width:316px; }
}

.index-item{
  display:flex;
  gap:18px;
  padding:22px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);
  margin-bottom:16px;
  transition:transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}
.index-item:hover{
  transform:translateY(-2px);
  box-shadow:var(--shadow-2);
  border-color:#CBDCF7;
}
.index-num{
  flex:0 0 auto;
  width:44px;
  height:44px;
  border-radius:12px;
  background:var(--brand-50);
  color:var(--brand-600);
  font-size:15px;
  font-weight:700;
  display:grid;
  place-items:center;
  transition:background 180ms ease, color 180ms ease;
}
.index-item:hover .index-num{ background:var(--brand-600); color:#fff; }
.index-body{ min-width:0; }
.index-body h3{ margin-bottom:6px; }
.index-body p{ font-size:14.5px; }
.index-foot{ margin-top:12px; display:flex; flex-wrap:wrap; align-items:center; gap:14px; }
.index-foot .meta{ font-size:13px; color:var(--ink-400); display:inline-flex; align-items:center; gap:6px; }

.sidebar-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);
  padding:20px;
  margin-bottom:20px;
}
.sidebar-card h3{ font-size:16px; margin-bottom:12px; }
@media (min-width:1024px){
  .layout-side .sidebar-sticky{ position:sticky; top:88px; }
}
.anchor-list li + li{ margin-top:2px; }
.anchor-list a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding:9px 12px;
  border-radius:10px;
  font-size:14.5px;
  color:var(--ink-600);
  transition:background 180ms ease, color 180ms ease;
}
.anchor-list a:hover{ background:var(--brand-50); color:var(--brand-600); }
.anchor-list a span.num{ font-size:12.5px; color:var(--ink-400); font-weight:600; }
.anchor-list a:hover span.num{ color:var(--brand-600); }

/* ---------- 要点清单 ---------- */
.check-list li{
  display:flex;
  gap:12px;
  padding:12px 0;
  border-bottom:1px dashed var(--line);
  font-size:15.5px;
}
.check-list li:last-child{ border-bottom:0; }
.check-list i{ color:var(--ok); margin-top:6px; font-size:14px; }

/* ---------- 对照卡 ---------- */
.tile{
  height:100%;
  display:flex;
  flex-direction:column;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);
  padding:22px;
  transition:transform 180ms ease, box-shadow 180ms ease;
}
.tile:hover{ transform:translateY(-2px); box-shadow:var(--shadow-2); }
.tile .tile-icon{
  width:42px;
  height:42px;
  border-radius:11px;
  background:var(--brand-50);
  color:var(--brand-600);
  display:grid;
  place-items:center;
  font-size:17px;
  margin-bottom:14px;
}
.tile h3{ margin-bottom:8px; }
.tile p{ font-size:14.5px; }
.tile ul{ margin-top:12px; }
.tile ul li{
  position:relative;
  padding-left:16px;
  font-size:14px;
  color:var(--ink-600);
  margin-bottom:6px;
}
.tile ul li::before{
  content:"";
  position:absolute;
  left:0;
  top:11px;
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--accent-500);
}

/* ---------- FAQ ---------- */
.faq-item{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  margin-bottom:12px;
  overflow:hidden;
  transition:box-shadow 180ms ease;
  box-shadow:var(--shadow-1);
}
.faq-item.is-open{
  box-shadow:inset 4px 0 0 var(--brand-600), var(--shadow-1);
}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:18px 20px;
  background:transparent;
  border:0;
  text-align:left;
  font-size:16px;
  font-weight:600;
  color:var(--ink-900);
  line-height:1.6;
}
.faq-item.is-open .faq-q{ color:var(--brand-600); }
.faq-icon{
  flex:0 0 auto;
  width:26px;
  height:26px;
  border-radius:50%;
  background:var(--surface-2);
  color:var(--ink-600);
  display:grid;
  place-items:center;
  font-size:12px;
  transition:transform 180ms ease, background 180ms ease, color 180ms ease;
}
.faq-item.is-open .faq-icon{ transform:rotate(180deg); background:var(--brand-600); color:#fff; }
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height 200ms ease;
  padding:0 20px;
}
.faq-item.is-open .faq-a{ max-height:340px; padding-bottom:20px; }
.faq-a p{ font-size:15px; color:var(--ink-600); }

/* ---------- 相关分类 ---------- */
.rel-card{
  display:flex;
  flex-direction:column;
  height:100%;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}
.rel-card:hover{ transform:translateY(-2px); box-shadow:var(--shadow-2); border-color:#CBDCF7; }
.rel-card .thumb{ width:100%; height:150px; object-fit:cover; background:var(--surface-2); }
.rel-body{ padding:18px 20px 22px; display:flex; flex-direction:column; flex:1 1 auto; }
.rel-body h3{ margin-bottom:8px; }
.rel-body p{ font-size:14.5px; flex:1 1 auto; }
.rel-body .text-link{ margin-top:14px; }

/* ---------- CTA 条 ---------- */
.cta-band{
  background:var(--brand-50);
  border-radius:var(--radius-card);
  padding:24px;
  display:flex;
  flex-direction:column;
  gap:18px;
}
@media (min-width:768px){
  .cta-band{ flex-direction:row; align-items:center; justify-content:space-between; padding:24px 32px; }
}
.cta-band .cta-text{ font-size:18px; font-weight:700; color:var(--ink-900); }
.cta-actions{ display:flex; flex-direction:column; gap:12px; }
@media (min-width:640px){ .cta-actions{ flex-direction:row; } }

/* ---------- 页脚 ---------- */
.site-footer{
  background:#fff;
  border-top:1px solid var(--line);
  padding:52px 0 0;
  margin-top:20px;
}
.footer-grid{ row-gap:32px; }
.footer-brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:16.5px;
  font-weight:700;
  color:var(--ink-900);
  margin-bottom:14px;
}
.footer-about{ font-size:14px; color:var(--ink-400); line-height:1.8; }
.footer-tags{ display:flex; flex-wrap:wrap; gap:8px; margin-top:16px; }
.footer-tags span{
  padding:4px 11px;
  border-radius:999px;
  background:var(--surface-2);
  color:var(--ink-600);
  font-size:12.5px;
}
.footer-title{ font-size:15px; font-weight:700; color:var(--ink-900); margin-bottom:14px; }
.footer-links li{ margin-bottom:9px; }
.footer-links a{
  font-size:14px;
  color:var(--ink-400);
  transition:color 180ms ease;
}
.footer-links a:hover{ color:var(--brand-600); text-decoration:underline; text-underline-offset:3px; }
.footer-contact li{
  display:flex;
  align-items:flex-start;
  gap:10px;
  font-size:14px;
  color:var(--ink-400);
  margin-bottom:10px;
}
.footer-contact i{ margin-top:5px; color:var(--brand-600); font-size:13px; }
.footer-bottom{
  margin-top:38px;
  border-top:1px solid var(--line);
  padding:18px 0 24px;
  display:flex;
  flex-direction:column;
  gap:8px;
  font-size:13px;
  color:var(--ink-400);
}
@media (min-width:768px){
  .footer-bottom{ flex-direction:row; align-items:center; justify-content:space-between; }
}

/* ---------- 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(--line);
  box-shadow:0 -6px 18px rgba(16,26,43,.06);
  padding-bottom:env(safe-area-inset-bottom);
}
.mobile-tabbar a{
  flex:1 1 0;
  height:56px;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:3px;
  font-size:10px;
  color:var(--ink-400);
  position:relative;
  transition:color 180ms ease;
}
.mobile-tabbar a i{ font-size:22px; line-height:1; }
.mobile-tabbar a::before{
  content:"";
  position:absolute;
  top:0;
  left:24%;
  right:24%;
  height:2px;
  border-radius:2px;
  background:var(--brand-600);
  transform:scaleX(0);
  transition:transform 180ms ease;
}
.mobile-tabbar a.is-active{ color:var(--brand-600); }
.mobile-tabbar a.is-active::before{ transform:scaleX(1); }
@media (min-width:768px){
  .mobile-tabbar{ display:none; }
  body{ padding-bottom:0; }
}

/* ---------- 轻提示 ---------- */
.toast{
  position:fixed;
  left:50%;
  bottom:92px;
  transform:translate(-50%,12px);
  background:var(--ink-900);
  color:#fff;
  font-size:14px;
  padding:10px 18px;
  border-radius:999px;
  opacity:0;
  pointer-events:none;
  transition:opacity 180ms ease, transform 180ms ease;
  z-index:90;
}
.toast.is-show{ opacity:1; transform:translate(-50%,0); }
@media (min-width:768px){ .toast{ bottom:36px; } }

@media (max-width:519px){
  .index-item{ padding:18px; gap:14px; }
  .index-num{ width:38px; height:38px; border-radius:10px; font-size:14px; }
}

/* roulang page: category3 */
:root{
  --bg:#F5F8FD;
  --surface:#FFFFFF;
  --surface-2:#EEF3FB;
  --ink-900:#101A2B;
  --ink-600:#4A5A72;
  --ink-400:#8494A8;
  --line:#E4EAF2;
  --brand-600:#1F5FD0;
  --brand-500:#2E74E8;
  --brand-50:#EAF2FE;
  --accent-500:#F08A24;
  --accent-50:#FFF3E4;
  --accent-ink:#A85C0C;
  --ok:#12A150;
  --danger:#D94A4A;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-1:0 1px 2px rgba(16,26,43,.04),0 6px 18px rgba(16,26,43,.06);
  --shadow-2:0 2px 4px rgba(16,26,43,.06),0 14px 28px rgba(16,26,43,.10);
  --container:1200px;
  --t:180ms ease;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  padding:0;
  background:var(--bg);
  color:var(--ink-600);
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;line-height:1.35;}
h1{letter-spacing:-0.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
img{display:block;max-width:100%;border-radius:var(--radius-img);height:auto;}
a{color:var(--brand-600);text-decoration:none;transition:color var(--t);}
a:hover{color:var(--brand-500);text-decoration:underline;text-underline-offset:3px;}
button{font-family:inherit;font-size:inherit;}
input,select,textarea{font-family:inherit;font-size:15px;}
:focus-visible{outline:2px solid var(--accent-500);outline-offset:2px;border-radius:6px;}
::selection{background:var(--brand-50);color:var(--ink-900);}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 16px;
}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:#fff;
  border-bottom:1px solid var(--line);
  box-shadow:0 1px 0 rgba(16,26,43,.02);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  min-height:66px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--ink-900);
  font-size:17px;
  font-weight:700;
  white-space:nowrap;
}
.brand:hover{color:var(--ink-900);text-decoration:none;}
.brand-mark{
  width:34px;
  height:34px;
  border-radius:10px;
  background:var(--brand-600);
  color:#fff;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-size:15px;
  flex:0 0 34px;
}
.main-nav{display:none;}
.nav-link{
  position:relative;
  display:inline-block;
  padding:10px 12px;
  border-radius:8px;
  color:var(--ink-600);
  font-size:15px;
  font-weight:500;
}
.nav-link:hover{color:var(--brand-600);background:var(--brand-50);text-decoration:none;}
.nav-link.is-active{color:var(--brand-600);font-weight:600;}
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:12px;
  right:12px;
  bottom:2px;
  height:2px;
  border-radius:2px;
  background:var(--brand-600);
}
.header-actions{display:flex;align-items:center;gap:10px;}
.nav-toggle{
  width:42px;
  height:42px;
  border:1px solid var(--line);
  border-radius:10px;
  background:#fff;
  color:var(--ink-900);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-size:16px;
  cursor:pointer;
  transition:background var(--t),border-color var(--t);
}
.nav-toggle:hover{background:var(--brand-50);border-color:var(--brand-600);color:var(--brand-600);}
.mobile-menu{
  display:none;
  border-top:1px solid var(--line);
  background:#fff;
  padding:8px 0 16px;
}
.mobile-menu.is-open{display:block;}
.mobile-menu a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:48px;
  padding:0 16px;
  color:var(--ink-600);
  font-size:15px;
  border-bottom:1px solid var(--surface-2);
}
.mobile-menu a:hover{background:var(--brand-50);color:var(--brand-600);text-decoration:none;}
.mobile-menu a.is-active{color:var(--brand-600);font-weight:600;}
.mobile-menu .menu-cta{padding:12px 16px 0;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 20px;
  border-radius:var(--radius-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1;
  cursor:pointer;
  transition:background var(--t),color var(--t),border-color var(--t),transform var(--t),box-shadow var(--t);
}
.btn:hover{text-decoration:none;}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:0 1px 2px rgba(16,26,43,.06);}
.btn-primary:hover{background:var(--brand-500);color:#fff;transform:translateY(-1px);}
.btn-primary:active{background:var(--brand-600);transform:none;}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--brand-600);}
.btn-ghost:hover{background:var(--brand-50);border-color:var(--brand-600);color:var(--brand-600);transform:translateY(-1px);}
.btn-ghost:active{transform:none;background:var(--surface-2);}
.btn-sm{height:36px;padding:0 14px;font-size:14px;}
.btn-block{width:100%;}
.btn-row{display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- 徽章与标签 ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 12px;
  border-radius:999px;
  font-size:12px;
  font-weight:600;
  line-height:1.6;
}
.badge-brand{background:var(--brand-50);color:var(--brand-600);}
.badge-accent{background:var(--accent-50);color:var(--accent-ink);}
.badge-line{background:#fff;border:1px solid var(--line);color:var(--ink-400);}
.tag{
  display:inline-flex;
  align-items:center;
  padding:3px 10px;
  border-radius:999px;
  background:var(--surface-2);
  color:var(--ink-600);
  font-size:12px;
  font-weight:500;
}

/* ---------- 页面头 ---------- */
.page-hero{
  position:relative;
  overflow:hidden;
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;
  background-position:center right;
  border-bottom:1px solid var(--line);
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(90deg,rgba(255,255,255,.95) 0%,rgba(255,255,255,.86) 42%,rgba(255,255,255,.12) 100%);
}
.page-hero .container{position:relative;z-index:1;padding-top:56px;padding-bottom:52px;}
.crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--ink-400);
  margin-bottom:18px;
}
.crumb a{color:var(--ink-400);}
.crumb a:hover{color:var(--brand-600);}
.crumb .sep{color:#C3CEDC;}
.page-hero h1{
  font-size:clamp(30px,4.2vw,46px);
  line-height:1.25;
  font-weight:700;
  max-width:760px;
}
.hero-lead{
  margin-top:16px;
  font-size:18px;
  color:var(--ink-600);
  max-width:620px;
}
.hero-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  margin-top:22px;
}
.hero-note{
  margin-top:14px;
  font-size:14px;
  color:var(--ink-400);
}

/* ---------- 板块 ---------- */
.section{padding:72px 0;}
.section-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:720px;margin-bottom:32px;}
.section-eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:600;
  color:var(--brand-600);
  margin-bottom:12px;
}
.section-title{font-size:26px;line-height:1.35;}
.section-sub{margin-top:12px;font-size:15px;color:var(--ink-600);}

/* ---------- 要点清单 ---------- */
.point-list{display:flex;flex-direction:column;gap:14px;}
.point-item{
  display:flex;
  gap:18px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:22px 24px;
  box-shadow:var(--shadow-1);
  transition:box-shadow var(--t),transform var(--t),border-color var(--t);
}
.point-item:hover{
  box-shadow:var(--shadow-2);
  transform:translateY(-2px);
  border-color:#D6E3F7;
}
.point-num{
  flex:0 0 44px;
  width:44px;
  height:44px;
  border-radius:12px;
  background:var(--brand-50);
  color:var(--brand-600);
  font-weight:700;
  font-size:16px;
  display:flex;
  align-items:center;
  justify-content:center;
  transition:background var(--t),color var(--t);
}
.point-item:hover .point-num{background:var(--brand-600);color:#fff;}
.point-body{flex:1 1 auto;min-width:0;}
.point-body h3{font-size:18px;margin-bottom:6px;}
.point-body p{font-size:15px;color:var(--ink-600);}
.point-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px;}

/* ---------- 对照区块 ---------- */
.check-grid{display:grid;grid-template-columns:1fr;gap:20px;}
.check-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:24px;
  box-shadow:var(--shadow-1);
  transition:box-shadow var(--t),transform var(--t);
}
.check-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);}
.check-card h3{
  font-size:19px;
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:6px;
}
.check-card h3 i{color:var(--brand-600);font-size:17px;}
.check-card .check-hint{font-size:13px;color:var(--ink-400);margin-bottom:16px;}
.check-list li{
  position:relative;
  padding-left:26px;
  font-size:15px;
  color:var(--ink-600);
  margin-bottom:12px;
}
.check-list li:last-child{margin-bottom:0;}
.check-list li::before{
  content:"\f00c";
  font-family:"Font Awesome 6 Free";
  font-weight:900;
  position:absolute;
  left:0;
  top:2px;
  font-size:12px;
  color:var(--ok);
}
.check-card.warn h3 i{color:var(--accent-500);}
.check-card.warn .check-list li::before{
  content:"\f071";
  color:var(--accent-500);
}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;}
.faq-item{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:box-shadow var(--t),border-color var(--t),box-shadow var(--t);
}
.faq-item:hover{box-shadow:var(--shadow-2);}
.faq-item.is-open{
  border-color:#CBDDF6;
  box-shadow:inset 4px 0 0 var(--brand-600),var(--shadow-2);
}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:20px 24px;
  background:transparent;
  border:0;
  text-align:left;
  color:var(--ink-900);
  font-size:16px;
  font-weight:600;
  line-height:1.6;
  cursor:pointer;
}
.faq-q:hover{color:var(--brand-600);}
.faq-icon{
  flex:0 0 24px;
  width:24px;
  height:24px;
  border-radius:50%;
  background:var(--brand-50);
  color:var(--brand-600);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-size:14px;
  font-weight:700;
  position:relative;
  transition:transform var(--t),background var(--t),color var(--t);
}
.faq-icon::before{content:"+";}
.faq-item.is-open .faq-icon{background:var(--brand-600);color:#fff;transform:rotate(180deg);}
.faq-item.is-open .faq-icon::before{content:"\2212";}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height 220ms ease;
}
.faq-a-inner{padding:0 24px 22px 24px;}
.faq-a-inner p{font-size:15px;color:var(--ink-600);}

/* ---------- 相关分类 ---------- */
.rel-grid{display:grid;grid-template-columns:1fr;gap:20px;}
.rel-card{
  display:flex;
  flex-direction:column;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);
  overflow:hidden;
  transition:box-shadow var(--t),transform var(--t),border-color var(--t);
}
.rel-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);border-color:#D6E3F7;text-decoration:none;}
.rel-card .rel-media{
  height:132px;
  background:var(--surface-2);
  border-bottom:1px solid var(--line);
}
.rel-card .rel-media img{width:100%;height:100%;object-fit:cover;border-radius:0;}
.rel-card .rel-body{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1 1 auto;}
.rel-card h3{font-size:17px;margin-bottom:8px;color:var(--ink-900);}
.rel-card p{font-size:14px;color:var(--ink-600);flex:1 1 auto;}
.rel-more{
  display:inline-flex;
  align-items:center;
  gap:6px;
  margin-top:14px;
  font-size:14px;
  font-weight:600;
  color:var(--brand-600);
}
.rel-card:hover .rel-more i{transform:translateX(3px);}
.rel-more i{transition:transform var(--t);}

/* ---------- CTA 条 ---------- */
.cta-bar{
  background:var(--brand-50);
  border:1px solid #D5E4FB;
  border-radius:var(--radius-card);
  padding:24px 32px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  flex-wrap:wrap;
}
.cta-bar .cta-text{flex:1 1 320px;min-width:0;}
.cta-bar .cta-text strong{display:block;font-size:18px;color:var(--ink-900);font-weight:700;line-height:1.5;}
.cta-bar .cta-text span{display:block;margin-top:4px;font-size:14px;color:var(--ink-600);}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:#fff;
  border-top:1px solid var(--line);
  padding:56px 0 0;
  margin-top:8px;
}
.footer-grid{row-gap:32px;}
.footer-brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--ink-900);
  font-size:16px;
  font-weight:700;
  margin-bottom:14px;
}
.footer-brand:hover{color:var(--ink-900);text-decoration:none;}
.footer-about{font-size:14px;color:var(--ink-600);line-height:1.8;}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}
.footer-tags span{
  display:inline-flex;
  padding:3px 10px;
  border-radius:999px;
  background:var(--surface-2);
  color:var(--ink-400);
  font-size:12px;
}
.footer-title{font-size:14px;font-weight:700;color:var(--ink-900);margin-bottom:14px;}
.footer-links li{margin-bottom:10px;}
.footer-links a{font-size:14px;color:var(--ink-400);}
.footer-links a:hover{color:var(--brand-600);text-decoration:underline;}
.footer-contact li{
  display:flex;
  align-items:flex-start;
  gap:10px;
  font-size:14px;
  color:var(--ink-400);
  margin-bottom:10px;
}
.footer-contact i{margin-top:5px;color:var(--brand-600);font-size:13px;}
.footer-bottom{
  margin-top:40px;
  border-top:1px solid var(--line);
  padding:18px 0 22px;
  display:flex;
  flex-wrap:wrap;
  gap:8px 20px;
  justify-content:space-between;
  font-size:13px;
  color:var(--ink-400);
}

/* ---------- 移动底部 Tab ---------- */
.mobile-tab{
  position:fixed;
  left:0;
  right:0;
  bottom:0;
  z-index:70;
  display:flex;
  background:#fff;
  border-top:1px solid var(--line);
  box-shadow:0 -4px 18px rgba(16,26,43,.06);
  padding-bottom:env(safe-area-inset-bottom);
}
.mobile-tab a{
  position:relative;
  flex:1 1 0;
  height:56px;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:2px;
  font-size:10px;
  color:var(--ink-400);
}
.mobile-tab a:hover{text-decoration:none;color:var(--ink-600);}
.mobile-tab a i{font-size:18px;}
.mobile-tab a.is-active{color:var(--brand-600);font-weight:600;}
.mobile-tab a.is-active::before{
  content:"";
  position:absolute;
  top:0;
  left:24%;
  right:24%;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--brand-500),var(--brand-600));
}
body{padding-bottom:76px;}

/* ---------- 断点 ---------- */
@media (min-width:640px){
  .container{padding:0 24px;}
  .check-grid{grid-template-columns:1fr 1fr;}
  .rel-grid{grid-template-columns:1fr 1fr;}
  .section{padding:80px 0;}
  .section-title{font-size:28px;}
}
@media (min-width:768px){
  .main-nav{display:flex;align-items:center;gap:2px;}
  .nav-toggle{display:none;}
  .mobile-menu{display:none !important;}
  .mobile-tab{display:none;}
  body{padding-bottom:0;}
  .page-hero .container{padding-top:64px;padding-bottom:60px;}
}
@media (min-width:1024px){
  .container{padding:0 32px;}
  .section{padding:88px 0;}
  .rel-grid{grid-template-columns:repeat(3,1fr);}
  .point-item{padding:24px 28px;}
  .cta-bar{padding:28px 36px;}
}
@media (max-width:639px){
  .brand span.brand-text{font-size:15px;}
  .hero-lead{font-size:16px;}
  .cta-bar{padding:22px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .faq-q{padding:16px 18px;font-size:15px;}
  .faq-a-inner{padding:0 18px 18px 18px;}
  .point-item{padding:18px;gap:14px;}
  .point-num{flex:0 0 38px;width:38px;height:38px;font-size:15px;}
  .footer-bottom{flex-direction:column;}
}

/* roulang page: category2 */
:root{
  --bg:#F5F8FD;
  --surface:#FFFFFF;
  --surface-2:#EEF3FB;
  --ink-900:#101A2B;
  --ink-600:#4A5A72;
  --ink-400:#8494A8;
  --line:#E4EAF2;
  --brand-600:#1F5FD0;
  --brand-500:#2E74E8;
  --brand-50:#EAF2FE;
  --accent-500:#F08A24;
  --accent-50:#FFF3E4;
  --ok:#12A150;
  --danger:#D94A4A;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-1:0 1px 2px rgba(16,26,43,.04),0 6px 18px rgba(16,26,43,.06);
  --shadow-2:0 2px 4px rgba(16,26,43,.06),0 14px 28px rgba(16,26,43,.10);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,Helvetica,Arial,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink-600);
  background:var(--bg);
  padding-bottom:76px;
}
img{display:block;max-width:100%;height:auto;background:var(--surface-2)}
a{color:var(--brand-600);text-decoration:none;transition:color 180ms ease}
a:hover{color:var(--brand-500);text-decoration:underline;text-underline-offset:3px}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;letter-spacing:normal}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit;cursor:pointer}
:focus-visible{outline:2px solid var(--accent-500);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding-left:16px;padding-right:16px}
@media(min-width:640px){.container{padding-left:24px;padding-right:24px}}
@media(min-width:1024px){.container{padding-left:32px;padding-right:32px}}

/* ---------- 顶部导航 ---------- */
.site-header{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;gap:18px;min-height:66px}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink-900);font-weight:700;font-size:17px;white-space:nowrap}
.brand:hover{text-decoration:none;color:var(--brand-600)}
.brand-mark{width:34px;height:34px;border-radius:10px;background:linear-gradient(135deg,var(--brand-600),var(--brand-500));color:#fff;display:flex;align-items:center;justify-content:center;font-size:15px;flex:none}
.main-nav{display:none;align-items:stretch;gap:2px;margin-left:10px}
@media(min-width:992px){.main-nav{display:flex}}
.nav-link{position:relative;display:inline-flex;align-items:center;height:66px;padding:0 13px;font-size:15px;font-weight:500;color:var(--ink-600)}
.nav-link::after{content:"";position:absolute;left:13px;right:13px;bottom:0;height:2px;background:var(--brand-600);border-radius:2px 2px 0 0;transform:scaleX(0);transform-origin:center;transition:transform 180ms ease}
.nav-link:hover{color:var(--brand-600);text-decoration:none}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--brand-600);font-weight:700}
.nav-link.is-active::after{transform:scaleX(1)}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:10px}
.nav-toggle{display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink-900);font-size:17px}
.nav-toggle:hover{border-color:var(--brand-600);color:var(--brand-600)}
@media(min-width:992px){.nav-toggle{display:none}}
.mobile-panel{display:none;border-top:1px solid var(--line);background:#fff;padding:8px 0 18px}
.mobile-panel.is-open{display:block}
.mobile-panel .container{display:block}
.mobile-panel a{display:flex;align-items:center;justify-content:space-between;height:48px;padding:0 4px;font-size:15px;color:var(--ink-900);border-bottom:1px solid var(--line)}
.mobile-panel a:hover{text-decoration:none;color:var(--brand-600)}
.mobile-panel a i{font-size:12px;color:var(--ink-400)}
.mobile-panel .panel-cta{margin-top:14px;border-bottom:0;justify-content:center;background:var(--brand-600);color:#fff;border-radius:10px;font-weight:600}
.mobile-panel .panel-cta:hover{background:var(--brand-500);color:#fff}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 22px;border-radius:var(--radius-btn);font-size:15px;font-weight:600;border:1px solid transparent;transition:all 180ms ease;text-decoration:none;line-height:1}
.btn:hover{text-decoration:none}
.btn-primary{background:var(--brand-600);color:#fff}
.btn-primary:hover{background:var(--brand-500);color:#fff;transform:translateY(-1px)}
.btn-primary:active{background:var(--brand-600);transform:none}
.btn-ghost{background:#fff;color:var(--brand-600);border-color:var(--line)}
.btn-ghost:hover{background:var(--brand-50);border-color:var(--brand-600);color:var(--brand-600)}
.btn-ghost:active{background:var(--brand-50);transform:none}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-block{width:100%}

/* ---------- 徽章 / 标签 ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:999px;font-size:12.5px;font-weight:600}
.badge-brand{background:var(--brand-50);color:var(--brand-600)}
.badge-accent{background:var(--accent-50);color:var(--accent-500)}
.tag{display:inline-block;padding:3px 10px;border-radius:999px;background:var(--surface-2);color:var(--ink-600);font-size:12.5px;line-height:1.6}
.tag + .tag{margin-left:6px}

/* ---------- 页面头 ---------- */
.page-hero{
  position:relative;
  padding:34px 0 44px;
  background-image:linear-gradient(100deg,rgba(255,255,255,.97) 0%,rgba(255,255,255,.90) 46%,rgba(255,255,255,.55) 100%),url("/assets/images/backpic/back-1.png");
  background-size:cover;
  background-position:center right;
  border-bottom:1px solid var(--line);
}
.crumb{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--ink-400);margin-bottom:18px;flex-wrap:wrap}
.crumb a{color:var(--ink-400)}
.crumb a:hover{color:var(--brand-600)}
.crumb i{font-size:10px}
.page-hero h1{font-size:clamp(28px,4vw,44px);line-height:1.28;letter-spacing:-.01em;max-width:900px}
.page-lead{margin-top:14px;font-size:17px;color:var(--ink-600);max-width:720px}
.hero-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:22px}
.meta-text{font-size:13.5px;color:var(--ink-400)}

/* ---------- 板块 ---------- */
.section{padding:56px 0}
@media(min-width:768px){.section{padding:76px 0}}
@media(min-width:1024px){.section{padding:84px 0}}
.section-alt{background:var(--surface)}
.section-head{max-width:760px;margin-bottom:28px}
@media(min-width:768px){.section-head{margin-bottom:34px}}
.section-head h2{font-size:clamp(22px,2.6vw,30px);line-height:1.35}
.section-head p{margin-top:12px;font-size:15.5px;color:var(--ink-600)}

/* ---------- 功能卡片网格 ---------- */
.feature-grid{margin-top:4px}
.feature-grid > .cell{margin-bottom:22px}
.feature-card{display:flex;flex-direction:column;height:100%;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-1);overflow:hidden;transition:transform 180ms ease,box-shadow 180ms ease,border-color 180ms ease}
.feature-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#D5E1F5}
.feature-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--surface-2)}
.feature-thumb img{width:100%;height:100%;object-fit:cover}
.feature-no{position:absolute;top:12px;left:12px;width:36px;height:36px;border-radius:999px;background:var(--brand-50);color:var(--brand-600);display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;transition:all 180ms ease}
.feature-card:hover .feature-no{background:var(--brand-600);color:#fff}
.feature-body{padding:20px 20px 22px;display:flex;flex-direction:column;flex:1}
.feature-body h3{font-size:19px;line-height:1.5}
.feature-body p{margin-top:10px;font-size:14.5px;color:var(--ink-600)}
.feature-tags{margin-top:14px}
.feature-more{margin-top:18px;padding-top:14px;border-top:1px solid var(--line);font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px}

/* ---------- 对照区块 ---------- */
.compare-card{height:100%;background:var(--bg);border:1px solid var(--line);border-radius:var(--radius-card);padding:24px;box-shadow:var(--shadow-1)}
.compare-head{display:flex;align-items:center;gap:12px;padding-bottom:16px;border-bottom:1px solid var(--line)}
.compare-head i{width:40px;height:40px;border-radius:12px;background:var(--brand-50);color:var(--brand-600);display:flex;align-items:center;justify-content:center;font-size:17px;flex:none}
.compare-head h3{font-size:19px}
.check-list{margin-top:18px}
.check-list li{display:flex;gap:11px;padding:9px 0;font-size:15px;color:var(--ink-600)}
.check-list li i{color:var(--ok);font-size:14px;margin-top:6px;flex:none}
.compare-note{margin-top:16px;padding:14px 16px;border-radius:12px;background:var(--accent-50);color:#8A4E12;font-size:14px}

/* ---------- FAQ ---------- */
.faq-list{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1)}
.faq-item + .faq-item{border-top:1px solid var(--line)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 22px;background:transparent;border:0;border-left:4px solid transparent;text-align:left;font-size:16px;font-weight:600;color:var(--ink-900);transition:background 180ms ease,border-color 180ms ease}
.faq-q:hover{background:var(--brand-50)}
.faq-q span{flex:1}
.faq-icon{font-size:14px;color:var(--brand-600);transition:transform 180ms ease;flex:none}
.faq-item.is-open .faq-q{border-left-color:var(--brand-600);background:var(--brand-50)}
.faq-item.is-open .faq-icon{transform:rotate(45deg)}
.faq-a{padding:0 22px 22px 22px;font-size:15px;color:var(--ink-600)}

/* ---------- 相关分类 ---------- */
.related-grid{margin-top:4px}
.related-grid > .cell{margin-bottom:20px}
.related-card{display:block;height:100%;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:22px;box-shadow:var(--shadow-1);transition:transform 180ms ease,box-shadow 180ms ease,border-color 180ms ease}
.related-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--brand-600);text-decoration:none}
.related-card i{width:42px;height:42px;border-radius:12px;background:var(--brand-50);color:var(--brand-600);display:flex;align-items:center;justify-content:center;font-size:17px;margin-bottom:14px}
.related-card h3{font-size:18px}
.related-card p{margin-top:8px;font-size:14.5px;color:var(--ink-600)}
.related-card .arrow{margin-top:14px;font-size:14px;font-weight:600;color:var(--brand-600);display:inline-flex;align-items:center;gap:6px}

/* ---------- CTA ---------- */
.cta-band{background:var(--brand-50);border-radius:var(--radius-card);padding:24px;display:flex;flex-direction:column;gap:18px}
@media(min-width:768px){.cta-band{flex-direction:row;align-items:center;justify-content:space-between;padding:26px 32px}}
.cta-band h2{font-size:19px;font-weight:700}
.cta-band p{margin-top:8px;font-size:14.5px;color:var(--ink-600)}
.cta-actions{display:flex;flex-direction:column;gap:12px}
@media(min-width:768px){.cta-actions{flex-direction:row;flex:none}}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--surface);border-top:1px solid var(--line);padding:52px 0 22px;margin-top:8px}
.footer-grid{margin-bottom:8px}
.footer-col{margin-bottom:28px}
.footer-brand{display:inline-flex;align-items:center;gap:10px;font-size:16.5px;font-weight:700;color:var(--ink-900)}
.footer-brand:hover{text-decoration:none;color:var(--brand-600)}
.footer-brand .brand-mark{width:32px;height:32px;font-size:14px}
.footer-about{margin-top:14px;font-size:14px;color:var(--ink-400);line-height:1.8}
.footer-tags{margin-top:14px;display:flex;flex-wrap:wrap;gap:8px}
.footer-tags span{padding:4px 10px;border-radius:999px;background:var(--surface-2);color:var(--ink-600);font-size:12.5px}
.footer-title{font-size:15px;font-weight:700;color:var(--ink-900);margin-bottom:14px}
.footer-links li{margin-bottom:10px}
.footer-links a{font-size:14px;color:var(--ink-400)}
.footer-links a:hover{color:var(--brand-600);text-decoration:underline}
.footer-contact li{display:flex;gap:10px;font-size:14px;color:var(--ink-400);margin-bottom:10px}
.footer-contact i{margin-top:5px;color:var(--brand-600);font-size:13px;flex:none}
.footer-bottom{margin-top:14px;padding-top:18px;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:8px;font-size:13px;color:var(--ink-400)}
@media(min-width:768px){.footer-bottom{flex-direction:row;align-items:center;justify-content:space-between}}

/* ---------- 移动底部 Tab ---------- */
.mobile-tabs{position:fixed;left:0;right:0;bottom:0;z-index:60;background:#fff;border-top:1px solid var(--line);box-shadow:0 -6px 18px rgba(16,26,43,.06);display:grid;grid-template-columns:repeat(5,1fr);padding-bottom:env(safe-area-inset-bottom)}
@media(min-width:768px){.mobile-tabs{display:none}}
.mobile-tabs a{position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;height:56px;font-size:10px;color:var(--ink-400)}
.mobile-tabs a:hover{text-decoration:none;color:var(--brand-600)}
.mobile-tabs a i{font-size:19px}
.mobile-tabs a.is-active{color:var(--brand-600);font-weight:700}
.mobile-tabs a.is-active::before{content:"";position:absolute;top:0;left:22%;right:22%;height:2px;border-radius:0 0 2px 2px;background:linear-gradient(90deg,var(--brand-500),var(--accent-500))}

/* roulang page: category4 */
:root{
  --bg:#F5F8FD;
  --surface:#FFFFFF;
  --surface-2:#EEF3FB;
  --ink-900:#101A2B;
  --ink-600:#4A5A72;
  --ink-400:#8494A8;
  --line:#E4EAF2;
  --brand-600:#1F5FD0;
  --brand-500:#2E74E8;
  --brand-50:#EAF2FE;
  --accent-500:#F08A24;
  --accent-50:#FFF3E4;
  --ok:#12A150;
  --danger:#D94A4A;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(16,26,43,.04),0 6px 18px rgba(16,26,43,.06);
  --shadow-2:0 2px 4px rgba(16,26,43,.06),0 14px 28px rgba(16,26,43,.10);
  --trans:180ms ease;
  --font:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,"Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--ink-600);
  background:var(--bg);
  padding-bottom:76px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand-600);text-decoration:none;transition:color var(--trans),background-color var(--trans),border-color var(--trans);}
a:hover{color:var(--brand-500);}
h1,h2,h3,h4{color:var(--ink-900);margin:0;font-weight:700;letter-spacing:0;}
p{margin:0 0 1em;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--accent-500);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 16px;}
@media(min-width:640px){.container{padding:0 24px;}}
@media(min-width:1024px){.container{padding:0 32px;}}
.section{padding:44px 0;}
@media(min-width:768px){.section{padding:64px 0;}}
@media(min-width:1024px){.section{padding:78px 0;}}
.section-head{margin-bottom:26px;}
.section-head h2{font-size:24px;line-height:1.35;}
.section-head .section-desc{margin-top:10px;font-size:15px;color:var(--ink-400);max-width:760px;}
@media(min-width:768px){.section-head h2{font-size:28px;}}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--brand-600);background:var(--brand-50);border-radius:var(--radius-pill);padding:5px 12px;margin-bottom:14px;}
.eyebrow i{font-size:12px;}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:background-color var(--trans),color var(--trans),border-color var(--trans),transform var(--trans),box-shadow var(--trans);
  text-decoration:none;white-space:nowrap;
}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:0 1px 2px rgba(31,95,208,.24);}
.btn-primary:hover{background:var(--brand-500);color:#fff;transform:translateY(-1px);}
.btn-primary:active{transform:none;background:var(--brand-600);}
.btn-ghost{background:var(--surface);color:var(--brand-600);border-color:var(--line);}
.btn-ghost:hover{background:var(--brand-50);border-color:var(--brand-600);color:var(--brand-600);}
.btn-ghost:active{background:var(--brand-50);transform:none;}
.btn-sm{height:40px;padding:0 16px;font-size:14px;}
.btn-block{width:100%;}

/* 徽章与标签 */
.badge{display:inline-flex;align-items:center;gap:6px;border-radius:var(--radius-pill);font-size:12px;font-weight:600;padding:4px 11px;line-height:1.5;}
.badge-brand{background:var(--brand-50);color:var(--brand-600);}
.badge-accent{background:var(--accent-50);color:var(--accent-500);}
.badge-ok{background:#E7F7EE;color:var(--ok);}
.tags{display:flex;flex-wrap:wrap;gap:8px;}
.tag{font-size:13px;color:var(--ink-600);background:var(--surface-2);border:1px solid var(--line);border-radius:var(--radius-pill);padding:4px 12px;transition:all var(--trans);}
.tag:hover{background:var(--brand-50);border-color:var(--brand-600);color:var(--brand-600);}

/* 头部导航 */
.site-header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);backdrop-filter:saturate(1.2) blur(6px);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;height:66px;}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:var(--ink-900);}
.brand:hover{color:var(--ink-900);}
.brand-mark{width:34px;height:34px;border-radius:10px;background:linear-gradient(135deg,var(--brand-600),var(--brand-500));color:#fff;display:inline-flex;align-items:center;justify-content:center;font-size:15px;flex:none;}
.brand-sub{display:none;font-size:12px;font-weight:500;color:var(--ink-400);}
@media(min-width:1024px){.brand-sub{display:block;}}
.main-nav{display:none;}
@media(min-width:768px){
  .main-nav{display:flex;align-items:center;gap:4px;}
}
.nav-link{position:relative;display:inline-flex;align-items:center;height:66px;padding:0 14px;font-size:15px;font-weight:500;color:var(--ink-600);}
.nav-link::after{content:"";position:absolute;left:14px;right:14px;bottom:14px;height:2px;background:var(--brand-600);border-radius:2px;transform:scaleX(0);transform-origin:center;transition:transform var(--trans);}
.nav-link:hover{color:var(--brand-600);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--brand-600);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:10px;}
.header-cta{display:none;}
@media(min-width:1024px){.header-cta{display:inline-flex;}}
.nav-toggle{display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;border-radius:var(--radius-btn);border:1px solid var(--line);background:var(--surface);color:var(--ink-900);cursor:pointer;font-size:16px;transition:all var(--trans);}
.nav-toggle:hover{background:var(--brand-50);border-color:var(--brand-600);color:var(--brand-600);}
@media(min-width:768px){.nav-toggle{display:none;}}
.mobile-panel{display:none;border-top:1px solid var(--line);background:var(--surface);padding:10px 0 18px;}
.mobile-panel.is-open{display:block;}
.mobile-panel a{display:flex;align-items:center;justify-content:space-between;height:48px;padding:0 4px;font-size:15px;color:var(--ink-900);border-bottom:1px solid var(--line);}
.mobile-panel a:last-of-type{border-bottom:0;}
.mobile-panel a:hover{color:var(--brand-600);}
.mobile-panel .panel-cta{margin-top:14px;}

/* 移动底部 Tab */
.mobile-tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  display:flex;align-items:stretch;justify-content:space-around;
  background:var(--surface);border-top:1px solid var(--line);
  box-shadow:0 -6px 18px rgba(16,26,43,.06);
  padding-bottom:env(safe-area-inset-bottom);
}
@media(min-width:768px){.mobile-tabbar{display:none;} body{padding-bottom:0;}}
.tab-item{position:relative;flex:1;height:56px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;font-size:10px;color:var(--ink-400);}
.tab-item i{font-size:18px;}
.tab-item::before{content:"";position:absolute;top:0;left:50%;transform:translateX(-50%) scaleX(0);width:26px;height:2px;background:linear-gradient(90deg,var(--brand-600),var(--brand-500));border-radius:2px;transition:transform var(--trans);}
.tab-item.is-active{color:var(--brand-600);font-weight:600;}
.tab-item.is-active::before{transform:translateX(-50%) scaleX(1);}
.tab-item:hover{color:var(--brand-600);}

/* 页面头 banner */
.page-hero{position:relative;background:var(--surface);border-bottom:1px solid var(--line);}
.page-hero-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.png');background-size:cover;background-position:center;opacity:.32;}
.page-hero-mask{position:absolute;inset:0;background:linear-gradient(90deg,rgba(255,255,255,.97) 0%,rgba(255,255,255,.9) 48%,rgba(255,255,255,.5) 100%);}
.page-hero-inner{position:relative;padding:40px 0 38px;}
@media(min-width:768px){.page-hero-inner{padding:58px 0 54px;}}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-400);margin-bottom:18px;}
.crumbs a{color:var(--ink-400);}
.crumbs a:hover{color:var(--brand-600);text-decoration:underline;text-underline-offset:3px;}
.crumbs .sep{color:var(--line);}
.crumbs .current{color:var(--ink-900);font-weight:600;}
.page-hero h1{font-size:clamp(28px,4.2vw,42px);line-height:1.25;letter-spacing:-.01em;max-width:820px;}
.page-hero .lede{margin-top:16px;font-size:16px;color:var(--ink-600);max-width:680px;}
.page-hero-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:22px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}

/* 概览数据 */
.metrics{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:26px;}
@media(min-width:768px){.metrics{grid-template-columns:repeat(4,1fr);}}
.metric{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:16px 18px;box-shadow:var(--shadow-1);}
.metric strong{display:block;font-size:24px;color:var(--ink-900);font-weight:700;line-height:1.3;}
.metric span{font-size:13px;color:var(--ink-400);}

/* 步骤时间线 */
.steps{display:grid;gap:18px;}
@media(min-width:900px){.steps{grid-template-columns:repeat(5,1fr);gap:16px;}}
.step{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:20px 18px 18px;box-shadow:var(--shadow-1);transition:box-shadow var(--trans),transform var(--trans),border-color var(--trans);}
.step:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#D6E2F5;}
.step .step-no{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:12px;background:var(--brand-50);color:var(--brand-600);font-weight:700;font-size:15px;margin-bottom:12px;}
.step:hover .step-no{background:var(--brand-600);color:#fff;}
.step h3{font-size:17px;font-weight:600;line-height:1.5;margin-bottom:8px;}
.step p{font-size:14px;line-height:1.75;color:var(--ink-600);margin:0;}
.step .step-time{display:inline-block;margin-top:12px;font-size:12px;color:var(--accent-500);background:var(--accent-50);border-radius:var(--radius-pill);padding:3px 10px;font-weight:600;}
@media(min-width:900px){
  .step::after{content:"";position:absolute;top:38px;right:-16px;width:16px;height:2px;background:var(--line);}
  .step:last-child::after{display:none;}
}

/* 条目表 */
.table-wrap{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-1);overflow:hidden;}
.dt-head{display:none;}
.dt-row{border-bottom:1px solid var(--line);transition:background-color var(--trans);}
.dt-row:last-child{border-bottom:0;}
.dt-row:hover{background:rgba(234,242,254,.6);}
.dt-row span{display:block;font-size:14px;line-height:1.7;color:var(--ink-600);}
.dt-row .c-no{font-weight:700;color:var(--brand-600);}
.dt-row .c-sym{font-weight:600;color:var(--ink-900);}
.dt-row .c-act{color:var(--ink-600);}
.dt-row .c-time{font-size:13px;color:var(--ink-400);}
@media(max-width:767px){
  .dt-row{padding:16px 18px;}
  .dt-row span{padding:4px 0 4px 0;}
  .dt-row span::before{content:attr(data-label);display:inline-block;min-width:76px;font-size:12px;color:var(--ink-400);font-weight:600;}
  .dt-row .c-no::before{min-width:76px;}
}
@media(min-width:768px){
  .dt-head{display:grid;grid-template-columns:76px 1.15fr 1.15fr 1.7fr 96px;gap:16px;padding:14px 22px;background:var(--surface-2);border-bottom:1px solid var(--line);font-size:13px;font-weight:600;color:var(--ink-900);}
  .dt-row{display:grid;grid-template-columns:76px 1.15fr 1.15fr 1.7fr 96px;gap:16px;padding:16px 22px;align-items:start;}
}

/* 要点清单 */
.points{display:grid;gap:14px;}
@media(min-width:768px){.points{grid-template-columns:repeat(2,1fr);}}
.point{display:flex;gap:14px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:18px 20px;box-shadow:var(--shadow-1);transition:all var(--trans);}
.point:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}
.point i{font-size:18px;color:var(--brand-600);margin-top:4px;flex:none;}
.point h3{font-size:16px;font-weight:600;margin-bottom:6px;}
.point p{font-size:14px;margin:0;}

/* 图卡组合 */
.split{display:grid;gap:24px;align-items:center;}
@media(min-width:900px){.split{grid-template-columns:1.05fr .95fr;gap:40px;}}
.split-media{border-radius:var(--radius-img);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-1);background:var(--surface-2);}
.split-media img{width:100%;height:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-img);}
.split-body h2{font-size:24px;line-height:1.35;margin-bottom:16px;}
@media(min-width:768px){.split-body h2{font-size:28px;}}
.check-list li{position:relative;padding-left:28px;margin-bottom:12px;font-size:15px;line-height:1.8;color:var(--ink-600);}
.check-list li::before{content:"\f00c";font-family:"Font Awesome 6 Free";font-weight:900;position:absolute;left:0;top:1px;color:var(--ok);font-size:13px;}

/* FAQ */
.accordion{border:0;background:transparent;}
.accordion-item{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);margin-bottom:12px;box-shadow:var(--shadow-1);overflow:hidden;transition:border-color var(--trans),box-shadow var(--trans);}
.accordion-item:hover{border-color:#D6E2F5;}
.accordion-title{position:relative;border:0;padding:18px 56px 18px 22px;font-size:16px;font-weight:600;color:var(--ink-900);background:transparent;line-height:1.6;}
.accordion-title::before{content:"\2b";position:absolute;right:22px;top:50%;transform:translateY(-50%);font-size:18px;font-weight:600;color:var(--brand-600);border:0;margin:0;width:auto;height:auto;line-height:1;transition:transform var(--trans);}
.accordion-title[aria-expanded="true"]::before{content:"\2212";}
.accordion-title:hover{background:var(--brand-50);}
.accordion-content{border:0;padding:0 22px 20px;background:transparent;color:var(--ink-600);font-size:15px;line-height:1.85;}
.accordion-item.is-active{border-color:#C9DAF6;}
.accordion-item.is-active .accordion-title{box-shadow:inset 4px 0 0 var(--brand-600);}

/* 相关分类 */
.rel-grid{display:grid;gap:18px;}
@media(min-width:640px){.rel-grid{grid-template-columns:repeat(2,1fr);}}
@media(min-width:1024px){.rel-grid{grid-template-columns:repeat(3,1fr);}}
.rel-card{display:block;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:22px;box-shadow:var(--shadow-1);transition:all var(--trans);color:var(--ink-600);}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#D6E2F5;color:var(--ink-600);}
.rel-card .rel-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px;}
.rel-icon{width:40px;height:40px;border-radius:12px;background:var(--brand-50);color:var(--brand-600);display:inline-flex;align-items:center;justify-content:center;font-size:16px;transition:all var(--trans);}
.rel-card:hover .rel-icon{background:var(--brand-600);color:#fff;}
.rel-card h3{font-size:17px;font-weight:600;margin-bottom:8px;}
.rel-card p{font-size:14px;margin:0 0 14px;}
.rel-more{font-size:13px;font-weight:600;color:var(--brand-600);display:inline-flex;align-items:center;gap:6px;}

/* CTA 条 */
.cta-bar{background:var(--brand-50);border:1px solid #D9E7FB;border-radius:var(--radius-card);padding:24px;display:flex;flex-wrap:wrap;gap:18px;align-items:center;justify-content:space-between;}
@media(min-width:768px){.cta-bar{padding:28px 32px;}}
.cta-bar .cta-text{font-size:17px;font-weight:700;color:var(--ink-900);line-height:1.6;}
.cta-bar .cta-sub{font-size:14px;color:var(--ink-600);font-weight:400;margin-top:4px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;width:100%;}
@media(min-width:640px){.cta-actions{width:auto;}}
@media(max-width:639px){.cta-actions .btn{width:100%;}}

/* 页脚 */
.site-footer{background:var(--surface);border-top:1px solid var(--line);padding:48px 0 0;margin-top:8px;}
.footer-grid{row-gap:32px;}
.footer-brand{display:inline-flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:var(--ink-900);margin-bottom:14px;}
.footer-brand:hover{color:var(--ink-900);}
.footer-about{font-size:14px;line-height:1.8;color:var(--ink-400);margin-bottom:16px;}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px;}
.footer-tags span{font-size:12px;color:var(--ink-600);background:var(--surface-2);border:1px solid var(--line);border-radius:var(--radius-pill);padding:3px 10px;}
.footer-title{font-size:15px;font-weight:700;color:var(--ink-900);margin-bottom:14px;}
.footer-links li{margin-bottom:10px;}
.footer-links a{font-size:14px;color:var(--ink-400);}
.footer-links a:hover{color:var(--brand-600);text-decoration:underline;text-underline-offset:3px;}
.footer-contact li{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--ink-400);margin-bottom:10px;line-height:1.7;}
.footer-contact i{color:var(--brand-600);margin-top:5px;font-size:13px;flex:none;}
.footer-bottom{border-top:1px solid var(--line);margin-top:40px;padding:18px 0 26px;display:flex;flex-wrap:wrap;gap:8px;justify-content:space-between;font-size:13px;color:var(--ink-400);}
@media(max-width:767px){.footer-bottom{flex-direction:column;}}