/* roulang page: index */
:root{
  --primary:#1D5FD0;
  --primary-dark:#1750B4;
  --primary-light:#EAF1FE;
  --amber:#F5A524;
  --amber-light:#FEF4E3;
  --amber-text:#A96B0B;
  --teal:#29B39C;
  --teal-light:#E7F8F5;
  --teal-text:#1B8574;
  --bg:#F5F8FD;
  --surface:#FFFFFF;
  --text:#122240;
  --text-2:#5B6B84;
  --text-3:#93A0B5;
  --border:#E4EBF7;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:12px;
  --radius-pill:999px;
  --shadow:0 8px 24px rgba(20,58,120,.08);
  --shadow-hover:0 14px 34px rgba(20,58,120,.14);
  --section-y:88px;
  --section-y-m:52px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--primary);text-decoration:none;transition:color .2s ease,background-color .2s ease;}
a:hover{color:var(--primary-dark);text-decoration:underline;}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--text);letter-spacing:-.2px;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button,input,textarea,select{font:inherit;color:inherit;}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(29,95,208,.25);border-radius:10px;}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
@media (min-width:1200px){.wrap{max-width:1240px;}}
@media (max-width:767px){.wrap{padding:0 16px;}}
section[id]{scroll-margin-top:88px;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:#fff;
  border-bottom:1px solid var(--border);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 20px rgba(20,58,120,.08);}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:68px;}
.logo{display:inline-flex;align-items:center;gap:10px;font-size:19px;font-weight:700;color:var(--text);white-space:nowrap;}
.logo:hover{color:var(--primary);text-decoration:none;}
.logo-mark{
  width:34px;height:34px;flex:none;border-radius:10px;
  background:linear-gradient(135deg,#2A6CE0,#174BB0);
  color:#fff;display:grid;place-items:center;font-size:14px;font-weight:700;letter-spacing:0;
}
.nav-menu{display:flex;align-items:center;gap:4px;}
.nav-menu a{
  position:relative;display:inline-block;padding:8px 14px;
  font-size:15px;color:var(--text-2);border-radius:8px;
}
.nav-menu a:hover{color:var(--primary);background:var(--primary-light);text-decoration:none;}
.nav-menu a.active{color:var(--primary);font-weight:600;}
.nav-menu a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:var(--primary);border-radius:2px;
}
.nav-cta{display:flex;align-items:center;gap:10px;}

/* ============ 按钮 ============ */
.btn-main,.btn-line,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 26px;font-size:15px;font-weight:600;line-height:1.2;
  border-radius:var(--radius-pill);border:1px solid transparent;cursor:pointer;
  transition:background-color .22s ease,color .22s ease,transform .22s ease,box-shadow .22s ease,border-color .22s ease;
  white-space:nowrap;
}
.btn-main{background:var(--primary);color:#fff;box-shadow:0 8px 20px rgba(29,95,208,.22);}
.btn-main:hover{background:var(--primary-dark);color:#fff;transform:translateY(-1px);text-decoration:none;box-shadow:0 10px 24px rgba(29,95,208,.28);}
.btn-main:active{transform:translateY(0);}
.btn-line{background:#fff;color:var(--primary);border-color:var(--primary);}
.btn-line:hover{background:var(--primary-light);color:var(--primary-dark);text-decoration:none;}
.btn-ghost{background:transparent;color:var(--primary);}
.btn-ghost:hover{background:var(--primary-light);color:var(--primary);text-decoration:none;}
.btn-sm{padding:9px 20px;font-size:14px;}
.btn-block{width:100%;}

/* ============ 通用区块 ============ */
.section{padding:var(--section-y) 0;}
.section-alt{background:#fff;}
.section-head{max-width:760px;margin:0 auto 44px;text-align:center;}
.section-head h2{font-size:clamp(22px,2.6vw,30px);line-height:1.35;margin-bottom:12px;}
.section-head p{color:var(--text-2);font-size:16px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--radius-pill);
  font-size:12px;font-weight:600;line-height:1.6;
  background:var(--primary-light);color:var(--primary);
}
.tag-amber{background:var(--amber-light);color:var(--amber-text);}
.tag-teal{background:var(--teal-light);color:var(--teal-text);}
.tag-plain{background:#F0F4FB;color:var(--text-2);}

/* ============ Hero ============ */
.hero{
  background:linear-gradient(180deg,#E9F1FE 0%,#F4F8FF 52%,var(--bg) 100%);
  padding:52px 0 76px;
  overflow:hidden;
}
.hero-grid{display:grid;grid-template-columns:1.12fr 1fr;gap:52px;align-items:center;}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  background:#fff;border:1px solid var(--border);color:var(--primary);
  font-size:13px;font-weight:600;padding:6px 15px;
  border-radius:var(--radius-pill);box-shadow:var(--shadow);
}
.hero-badge i{color:var(--teal);}
.hero h1{
  font-size:clamp(28px,4vw,44px);
  line-height:1.25;
  margin:22px 0 0;
}
.hero-sub{font-size:17px;color:var(--text-2);margin-top:16px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:22px;margin-top:34px;}
.hero-meta div{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-2);}
.hero-meta i{color:var(--primary);}
.hero-visual{position:relative;}
.hero-visual img{
  width:100%;border-radius:var(--radius-img);
  box-shadow:var(--shadow);border:1px solid #DCE7F8;
}
.hero-chip{
  position:absolute;left:-14px;bottom:22px;
  background:#fff;border:1px solid var(--border);border-radius:14px;
  box-shadow:var(--shadow);padding:12px 18px;display:flex;align-items:center;gap:10px;
}
.hero-chip i{color:var(--amber);font-size:18px;}
.hero-chip span{font-size:13px;color:var(--text-2);}
.hero-chip strong{display:block;font-size:15px;color:var(--text);}

/* ============ 信任条 ============ */
.trust{margin-top:-40px;position:relative;z-index:5;}
.trust-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:18px;
  background:#fff;border:1px solid var(--border);border-radius:20px;
  box-shadow:var(--shadow);padding:26px;
}
.trust-item{display:flex;align-items:flex-start;gap:12px;padding:4px 8px;}
.trust-item i{
  flex:none;width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
  font-size:16px;background:var(--primary-light);color:var(--primary);
}
.trust-item:nth-child(2) i{background:var(--amber-light);color:var(--amber-text);}
.trust-item:nth-child(3) i{background:var(--teal-light);color:var(--teal-text);}
.trust-item h3{font-size:15px;margin-bottom:2px;}
.trust-item p{font-size:13px;color:var(--text-3);line-height:1.6;}

/* ============ 玩法介绍 ============ */
.play-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.play-card{
  position:relative;background:#fff;border:1px solid var(--border);
  border-radius:var(--radius-card);padding:26px 22px 24px;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.play-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#D3E0F8;}
.play-num{
  display:block;font-size:50px;font-weight:700;line-height:1;
  color:transparent;-webkit-text-stroke:1.5px #C9D9F2;margin-bottom:14px;
}
.play-card h3{font-size:17px;margin-bottom:8px;}
.play-card p{font-size:14px;color:var(--text-2);line-height:1.75;}
.play-card .play-icon{
  position:absolute;top:26px;right:22px;width:34px;height:34px;border-radius:10px;
  display:grid;place-items:center;background:var(--primary-light);color:var(--primary);font-size:14px;
}
.play-card:nth-child(3) .play-icon{background:var(--amber-light);color:var(--amber-text);}
.play-card:nth-child(4) .play-icon{background:var(--teal-light);color:var(--teal-text);}

/* ============ 奖励预览 ============ */
.reward-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;align-items:stretch;}
.reward-card{
  position:relative;background:#fff;border:1px solid var(--border);
  border-radius:var(--radius-card);padding:28px 24px 24px;overflow:hidden;
  display:flex;flex-direction:column;
  transition:transform .25s ease,box-shadow .25s ease;
}
.reward-card::before{content:"";position:absolute;left:0;right:0;top:0;height:4px;background:var(--primary);}
.reward-card.r2::before{background:var(--amber);}
.reward-card.r3::before{background:var(--teal);}
.reward-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.reward-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:8px;}
.reward-card h3{font-size:19px;}
.reward-desc{font-size:14px;color:var(--text-2);margin-bottom:18px;}
.reward-list{display:flex;flex-direction:column;gap:12px;margin-bottom:22px;}
.reward-list li{display:flex;gap:10px;font-size:14px;color:var(--text-2);line-height:1.7;}
.reward-list i{color:var(--teal);margin-top:5px;font-size:13px;flex:none;}
.reward-foot{margin-top:auto;padding-top:16px;border-top:1px solid var(--border);font-size:13px;color:var(--text-3);}

/* ============ 进度组件 ============ */
.progress-track{display:grid;grid-template-columns:repeat(5,1fr);margin-top:48px;}
.step{position:relative;text-align:center;padding-top:30px;padding-right:10px;padding-left:10px;}
.step::before{
  content:"";position:absolute;top:7px;left:50%;right:-50%;height:2px;
  background:var(--border);z-index:0;
}
.step:last-child::before{display:none;}
.step.done::before{background:var(--primary);}
.step.todo::before{height:0;border-top:2px dashed #D6E1F4;background:none;}
.step-dot{
  position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:14px;height:14px;border-radius:50%;background:#fff;
  border:2px solid var(--border);z-index:1;
}
.step.done .step-dot{background:var(--primary);border-color:var(--primary);}
.step.current .step-dot{border-color:var(--primary);background:#fff;box-shadow:0 0 0 5px rgba(29,95,208,.16);animation:stepPulse 2.2s ease-in-out infinite;}
.step.todo .step-dot{border-color:#D6E1F4;}
@keyframes stepPulse{
  0%,100%{box-shadow:0 0 0 4px rgba(29,95,208,.14);}
  50%{box-shadow:0 0 0 9px rgba(29,95,208,.05);}
}
.step h3{font-size:16px;margin-bottom:6px;}
.step p{font-size:13px;color:var(--text-3);line-height:1.65;}
.step-status{
  display:inline-block;margin-bottom:8px;font-size:11px;font-weight:600;
  padding:2px 9px;border-radius:var(--radius-pill);
  background:#F0F4FB;color:var(--text-3);
}
.step.done .step-status{background:var(--teal-light);color:var(--teal-text);}
.step.current .step-status{background:var(--amber-light);color:var(--amber-text);}

/* ============ 图文说明区 ============ */
.feature-grid{display:grid;grid-template-columns:1fr 1.08fr;gap:52px;align-items:center;}
.feature-media img{width:100%;border-radius:var(--radius-card);border:1px solid var(--border);box-shadow:var(--shadow);}
.feature-body h2{font-size:clamp(22px,2.6vw,30px);line-height:1.4;margin-bottom:14px;}
.feature-body>p{color:var(--text-2);margin-bottom:26px;}
.feature-points{display:flex;flex-direction:column;gap:20px;}
.feature-points li{display:flex;gap:14px;}
.feature-points i{
  flex:none;width:36px;height:36px;border-radius:11px;display:grid;place-items:center;
  background:var(--teal-light);color:var(--teal-text);font-size:15px;
}
.feature-points li:nth-child(2) i{background:var(--amber-light);color:var(--amber-text);}
.feature-points li:nth-child(3) i{background:var(--primary-light);color:var(--primary);}
.feature-points h3{font-size:16px;margin-bottom:4px;}
.feature-points p{font-size:14px;color:var(--text-2);line-height:1.75;}

/* ============ CTA 带 ============ */
.cta-band{
  background:linear-gradient(135deg,#E7F0FE 0%,#FFFFFF 70%);
  border:1px solid var(--border);border-radius:24px;
  padding:56px 40px;text-align:center;
}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:12px;}
.cta-band p{color:var(--text-2);font-size:16px;margin-bottom:28px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;}
.cta-note{margin-top:22px;font-size:13px;color:var(--text-3);}

/* ============ 资讯列表 ============ */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.news-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#D3E0F8;}
.news-thumb{display:block;aspect-ratio:16/9;overflow:hidden;background:var(--primary-light);}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease;}
.news-card:hover .news-thumb img{transform:scale(1.05);}
.news-body{padding:20px;display:flex;flex-direction:column;flex:1;}
.news-title{font-size:17px;line-height:1.55;margin:12px 0 8px;}
.news-title a{color:var(--text);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-title a:hover{color:var(--primary);text-decoration:none;}
.news-excerpt{
  font-size:14px;color:var(--text-2);line-height:1.75;margin-bottom:18px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding-top:14px;border-top:1px solid var(--border);font-size:13px;color:var(--text-3);
}
.news-meta i{transition:transform .25s ease;}
.news-card:hover .news-meta i{transform:translateX(4px);color:var(--primary);}
.empty-state{
  grid-column:1/-1;min-height:180px;background:#fff;border:1px dashed #D3E0F8;
  border-radius:var(--radius-card);display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:14px;text-align:center;padding:40px 20px;
}
.empty-state i{font-size:48px;color:#C6D4EA;}
.empty-state p{font-size:15px;color:var(--text-2);}

/* ============ FAQ ============ */
.faq-list{max-width:880px;margin:0 auto;display:flex;flex-direction:column;gap:12px;}
.faq-item{
  background:#fff;border:1px solid var(--border);border-radius:12px;
  transition:box-shadow .25s ease,border-color .25s ease;
}
.faq-item:hover{border-color:#D3E0F8;}
.faq-item[open]{box-shadow:inset 3px 0 0 var(--primary),var(--shadow);border-color:#DCE7F8;}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;cursor:pointer;list-style:none;
}
.faq-q::-webkit-details-marker{display:none;}
.faq-q h3{font-size:17px;font-weight:600;flex:1;line-height:1.6;}
.faq-icon{color:var(--text-3);font-size:14px;flex:none;transition:transform .28s ease,color .28s ease;}
.faq-item[open] .faq-icon{transform:rotate(180deg);color:var(--primary);}
.faq-a{padding:0 22px 20px;font-size:15px;color:var(--text-2);line-height:1.9;}
.faq-a p+p{margin-top:10px;}

/* ============ 页脚 ============ */
.site-footer{background:#EDF2FA;border-top:1px solid var(--border);padding:64px 0 0;margin-top:var(--section-y);}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px;}
.footer-brand .logo{margin-bottom:14px;}
.footer-brand p{font-size:14px;color:var(--text-2);line-height:1.8;max-width:320px;}
.footer-title{font-size:15px;font-weight:700;margin-bottom:16px;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{color:var(--text-2);font-size:14px;}
.footer-links a:hover{color:var(--primary);}
.footer-info{display:flex;flex-direction:column;gap:10px;font-size:14px;color:var(--text-2);}
.footer-info span{display:flex;align-items:center;gap:8px;}
.footer-info i{color:var(--primary);font-size:13px;width:16px;}
.footer-bottom{
  margin-top:48px;border-top:1px solid #DCE5F3;padding:20px 0;
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-size:13px;color:var(--text-3);
}

/* ============ 移动端底部 Tab ============ */
.mobile-tab{
  position:fixed;left:0;right:0;bottom:0;z-index:1040;display:none;
  background:rgba(255,255,255,.97);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  border-top:1px solid var(--border);
  padding-bottom:env(safe-area-inset-bottom);
}
.mobile-tab ul{display:flex;}
.mobile-tab li{flex:1;text-align:center;}
.mobile-tab a{
  display:flex;flex-direction:column;align-items:center;gap:4px;
  padding:9px 2px 7px;font-size:11px;color:var(--text-3);
}
.mobile-tab a i{font-size:20px;}
.mobile-tab a:hover{color:var(--primary);text-decoration:none;}
.mobile-tab a.active{color:var(--primary);font-weight:600;}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  :root{--section-y:80px;}
}
@media (max-width:991px){
  :root{--section-y:68px;--section-y-m:48px;}
  .nav-menu{display:none;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero-visual{order:2;}
  .trust-grid{grid-template-columns:repeat(2,1fr);}
  .play-grid{grid-template-columns:repeat(2,1fr);}
  .reward-grid{grid-template-columns:1fr;max-width:560px;margin:0 auto;}
  .feature-grid{grid-template-columns:1fr;gap:32px;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .trust{margin-top:-24px;}
}
@media (max-width:767px){
  :root{--section-y:52px;}
  .nav-cta .btn-main{display:none;}
  .mobile-tab{display:block;}
  body{padding-bottom:calc(72px + env(safe-area-inset-bottom));}
  .site-footer{margin-top:var(--section-y-m);padding-top:48px;}
  .section-head{margin-bottom:32px;text-align:left;}
  .hero{padding:36px 0 56px;}
  .hero-actions{gap:12px;}
  .hero-actions .btn-main,.hero-actions .btn-ghost{width:100%;}
  .hero-chip{left:12px;bottom:12px;padding:10px 14px;}
  .play-grid{grid-template-columns:1fr;}
  .progress-track{display:block;margin-top:32px;}
  .step{text-align:left;padding:0 0 30px 38px;}
  .step::before{top:16px;left:6px;width:2px;height:100%;right:auto;}
  .step:last-child::before{display:none;}
  .step-dot{top:7px;left:0;transform:none;}
  .news-grid{grid-template-columns:1fr;}
  .cta-band{padding:36px 20px;border-radius:18px;}
  .cta-actions .btn-main,.cta-actions .btn-line{width:100%;}
  .faq-q{padding:16px 18px;}
  .faq-a{padding:0 18px 18px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:575px){
  .trust-grid{grid-template-columns:1fr;padding:18px;}
  .logo{font-size:17px;}
  .logo-mark{width:30px;height:30px;font-size:13px;}
}

/* roulang page: article */
:root{
  --brand:#1D5FD0;
  --brand-dark:#1a55bb;
  --brand-soft:#EAF1FF;
  --amber:#F5A524;
  --amber-soft:#FFF3DE;
  --teal:#29B39C;
  --teal-soft:#E6F7F3;
  --bg:#F5F8FD;
  --surface:#FFFFFF;
  --ink:#122240;
  --ink-2:#5B6B84;
  --ink-3:#93A0B5;
  --line:#E4EBF7;
  --r-card:16px;
  --r-btn:10px;
  --r-img:12px;
  --r-pill:999px;
  --sh:0 8px 24px rgba(20,58,120,.08);
  --sh-hover:0 14px 34px rgba(20,58,120,.14);
  --sec:80px;
  --sec-sm:52px;
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,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:1.75;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-dark);text-decoration:underline;}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--ink);line-height:1.35;}
p{margin:0 0 1em;}
ul,ol{margin:0;padding:0;}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(29,95,208,.25);border-radius:var(--r-btn);}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
@media (min-width:1400px){.wrap{max-width:1240px;}}
@media (max-width:767px){.wrap{padding:0 16px;}}
section{padding:var(--sec) 0;}
@media (max-width:767px){section{padding:var(--sec-sm) 0;}}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.scrolled{box-shadow:0 6px 20px rgba(20,58,120,.08);}
.nav-inner{display:flex;align-items:center;gap:20px;height:68px;}
.logo{display:inline-flex;align-items:center;gap:10px;font-size:18px;font-weight:700;color:var(--ink);white-space:nowrap;}
.logo:hover{color:var(--ink);text-decoration:none;}
.logo-mark{
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--brand),#3b7ae8);
  color:#fff;font-size:14px;font-weight:700;letter-spacing:1px;
  padding:5px 9px;border-radius:10px;
}
.nav-menu{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-menu a{
  position:relative;display:inline-block;
  padding:22px 12px;font-size:15px;color:var(--ink-2);
}
.nav-menu a:hover{color:var(--brand);text-decoration:none;}
.nav-menu a.active{color:var(--brand);font-weight:600;}
.nav-menu a.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:14px;height:2px;
  background:var(--brand);border-radius:2px;
}
.nav-cta{display:flex;align-items:center;gap:10px;}
@media (max-width:991px){
  .nav-menu,.nav-cta{display:none;}
  .nav-inner{height:62px;justify-content:space-between;}
}

/* ============ 按钮 ============ */
.btn-main,.btn-outline,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;
  border-radius:var(--r-btn);padding:13px 24px;border:1px solid transparent;
  cursor:pointer;transition:all .2s ease;
}
.btn-main{background:var(--brand);color:#fff;}
.btn-main:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);text-decoration:none;}
.btn-outline{background:#fff;color:var(--brand);border-color:var(--brand);}
.btn-outline:hover{background:var(--brand-soft);color:var(--brand);text-decoration:none;}
.btn-ghost{background:transparent;color:var(--brand);}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand);text-decoration:none;}
.btn-sm{padding:10px 18px;font-size:14px;}
.btn-pill{border-radius:var(--r-pill);}

/* ============ 面包屑 & 页面头 ============ */
.page-head{
  background:linear-gradient(180deg,#EDF3FF 0%,#F5F8FD 100%);
  padding:34px 0 30px;
  border-bottom:1px solid var(--line);
}
.breadcrumb-line{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13.5px;color:var(--ink-3);
}
.breadcrumb-line a{color:var(--ink-2);}
.breadcrumb-line a:hover{color:var(--brand);}
.breadcrumb-line .sep{color:#c3cede;}
.breadcrumb-line .current{
  color:var(--ink);max-width:60vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
@media (max-width:576px){.breadcrumb-line .current{max-width:100%;white-space:normal;}}

/* ============ 文章布局 ============ */
.article-section{padding:44px 0 72px;}
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:40px;align-items:start;
}
@media (max-width:991px){.article-layout{grid-template-columns:1fr;gap:28px;}}

.article-card{
  background:var(--surface);border-radius:var(--r-card);
  box-shadow:var(--sh);padding:38px 44px;
}
@media (max-width:767px){.article-card{padding:26px 20px;}}

.article-title{
  font-size:clamp(26px,3.1vw,36px);line-height:1.35;letter-spacing:.2px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin-top:18px;padding-bottom:22px;border-bottom:1px solid var(--line);
}
.badge-cat{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--brand-soft);color:var(--brand);
  font-size:13px;font-weight:600;padding:5px 12px;border-radius:var(--r-pill);
}
.badge-soft{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--teal-soft);color:#1c8874;
  font-size:13px;font-weight:600;padding:5px 12px;border-radius:var(--r-pill);
}
.meta-text{font-size:13.5px;color:var(--ink-3);display:inline-flex;align-items:center;gap:6px;}

/* ============ 正文排版 ============ */
.article-body{
  max-width:780px;
  margin-top:28px;
  font-size:16.5px;line-height:1.9;color:#26364f;
  overflow-x:auto;
}
.article-body p{margin:0 0 1em;}
.article-body h2{
  font-size:clamp(20px,2.2vw,24px);line-height:1.5;
  margin:32px 0 16px;padding-left:14px;
  border-left:4px solid var(--brand);
}
.article-body h3{
  font-size:18px;font-weight:700;color:var(--ink);
  margin:26px 0 12px;
}
.article-body h4{font-size:16.5px;margin:20px 0 10px;color:var(--ink);}
.article-body a{color:var(--brand);}
.article-body a:hover{text-decoration:underline;}
.article-body img{
  border-radius:var(--r-img);border:1px solid var(--line);
  margin:22px auto;box-shadow:var(--sh);
}
.article-body blockquote{
  background:#F1F6FF;border-left:4px solid var(--brand);
  border-radius:0 var(--r-img) var(--r-img) 0;
  padding:16px 20px;margin:22px 0;color:var(--ink-2);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body ul,.article-body ol{list-style:none;margin:16px 0;}
.article-body ul li{position:relative;padding-left:22px;margin-bottom:10px;}
.article-body ul li::before{
  content:"";position:absolute;left:3px;top:12px;width:7px;height:7px;
  background:var(--amber);border-radius:2px;transform:rotate(45deg);
}
.article-body ol{counter-reset:olcount;}
.article-body ol li{position:relative;padding-left:34px;margin-bottom:10px;counter-increment:olcount;}
.article-body ol li::before{
  content:counter(olcount);
  position:absolute;left:0;top:3px;width:22px;height:22px;
  display:flex;align-items:center;justify-content:center;
  background:var(--brand-soft);color:var(--brand);
  font-size:12.5px;font-weight:700;border-radius:50%;
}
.article-body table{
  width:100%;min-width:520px;border-collapse:collapse;margin:22px 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:#F1F6FF;font-weight:600;color:var(--ink);}

/* ============ 空态 ============ */
.empty-state{
  min-height:180px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:14px;text-align:center;color:var(--ink-3);padding:32px 16px;
  background:#FAFCFF;border:1px dashed var(--line);border-radius:var(--r-card);
}
.empty-state i{font-size:48px;color:#c3cede;line-height:1;}
.empty-state p{margin:0;font-size:15px;}

/* ============ 文末区 ============ */
.article-foot{margin-top:34px;padding-top:24px;border-top:1px solid var(--line);}
.tag-list{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:22px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  background:#F3F7FE;color:var(--ink-2);
  font-size:13px;padding:6px 14px;border-radius:var(--r-pill);
  border:1px solid var(--line);
}
.tag:hover{background:var(--brand-soft);color:var(--brand);border-color:#cfe0ff;text-decoration:none;}
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
@media (max-width:576px){.post-nav{grid-template-columns:1fr;}}
.post-nav a{
  display:block;background:#FAFCFF;border:1px solid var(--line);
  border-radius:var(--r-img);padding:16px 18px;transition:all .2s ease;
}
.post-nav a:hover{border-color:#cfe0ff;background:#fff;box-shadow:var(--sh);text-decoration:none;}
.post-nav .pn-label{font-size:12.5px;color:var(--ink-3);display:block;margin-bottom:6px;}
.post-nav .pn-title{font-size:15px;font-weight:600;color:var(--ink);line-height:1.5;}
.post-nav a:hover .pn-title{color:var(--brand);}

/* ============ 侧栏 ============ */
.side-card{
  background:var(--surface);border-radius:var(--r-card);
  box-shadow:var(--sh);padding:22px 22px 24px;margin-bottom:20px;
}
.side-card h3{font-size:16px;margin-bottom:14px;display:flex;align-items:center;gap:8px;}
.side-card h3 i{color:var(--brand);font-size:15px;}
.toc-list{list-style:none;}
.toc-list li{margin-bottom:10px;}
.toc-list a{
  display:block;font-size:14px;color:var(--ink-2);line-height:1.6;
  padding-left:12px;border-left:2px solid var(--line);
}
.toc-list a:hover{color:var(--brand);border-left-color:var(--brand);text-decoration:none;}
.toc-empty{font-size:13.5px;color:var(--ink-3);}
.side-links{display:flex;flex-direction:column;gap:10px;}
.side-links a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  font-size:14.5px;color:var(--ink-2);padding:11px 14px;
  background:#F7FAFF;border-radius:10px;transition:all .2s ease;
}
.side-links a:hover{background:var(--brand-soft);color:var(--brand);text-decoration:none;}
.side-links a i{font-size:12px;color:var(--ink-3);}
.side-links a:hover i{color:var(--brand);}
@media (min-width:992px){.side-inner{position:sticky;top:92px;}}

/* ============ 相关推荐卡片 ============ */
.section-head{margin-bottom:32px;}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;font-weight:600;color:var(--brand);
  background:var(--brand-soft);padding:5px 12px;border-radius:var(--r-pill);margin-bottom:12px;
}
.section-head h2{font-size:clamp(22px,2.6vw,30px);}
.section-head p{margin:10px 0 0;color:var(--ink-2);font-size:15px;max-width:640px;}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
@media (max-width:991px){.card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media (max-width:575px){.card-grid{grid-template-columns:1fr;}}
.news-card{
  display:flex;flex-direction:column;background:var(--surface);
  border-radius:var(--r-card);box-shadow:var(--sh);overflow:hidden;
  transition:transform .24s ease,box-shadow .24s ease;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);}
.news-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:#E9F0FB;}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.news-card:hover .news-thumb img{transform:scale(1.04);}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1;}
.news-body .badge-cat{align-self:flex-start;margin-bottom:12px;}
.news-body h3{font-size:17px;line-height:1.55;margin-bottom:10px;}
.news-card:hover h3{color:var(--brand);}
.news-body .excerpt{
  font-size:14px;color:var(--ink-2);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-foot{
  margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--ink-3);
}
.news-foot i{transition:transform .24s ease;color:var(--brand);}
.news-card:hover .news-foot i{transform:translateX(4px);}

/* ============ CTA ============ */
.cta-band{
  background:linear-gradient(180deg,#E9F1FF 0%,#FFFFFF 100%);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  text-align:center;
}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:14px;}
.cta-band p{color:var(--ink-2);font-size:15.5px;max-width:560px;margin:0 auto 26px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;}
@media (max-width:575px){
  .cta-actions{flex-direction:column;}
  .cta-actions .btn-main,.cta-actions .btn-outline{width:100%;}
}

/* ============ 页脚 ============ */
.site-footer{background:#EAF0F9;color:var(--ink);padding:56px 0 26px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:32px;}
@media (max-width:991px){.footer-grid{grid-template-columns:1fr 1fr;}}
@media (max-width:575px){.footer-grid{grid-template-columns:1fr;gap:26px;}}
.footer-brand p{font-size:14px;color:var(--ink-2);line-height:1.85;margin:16px 0 0;max-width:360px;}
.footer-title{font-size:15px;margin-bottom:16px;color:var(--ink);}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a{font-size:14px;color:var(--ink-2);}
.footer-links a:hover{color:var(--brand);}
.footer-info{display:flex;flex-direction:column;gap:11px;font-size:14px;color:var(--ink-2);}
.footer-info span{display:flex;align-items:center;gap:8px;}
.footer-info i{color:var(--brand);font-size:13px;}
.footer-bottom{
  margin-top:38px;padding-top:20px;border-top:1px solid #D8E2F1;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--ink-3);
}
@media (max-width:575px){.footer-bottom{flex-direction:column;align-items:flex-start;}}

/* ============ 移动底部 Tab ============ */
.tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  display:none;background:#fff;border-top:1px solid var(--line);
  padding:8px 0 calc(8px + env(safe-area-inset-bottom,0px));
  box-shadow:0 -6px 20px rgba(20,58,120,.07);
}
.tabbar a{
  flex:1;display:flex;flex-direction:column;align-items:center;gap:4px;
  font-size:11.5px;color:var(--ink-3);padding:4px 2px;
}
.tabbar a i{font-size:20px;line-height:1;}
.tabbar a:hover{text-decoration:none;color:var(--brand);}
.tabbar a.active{color:var(--brand);font-weight:600;}
@media (max-width:767px){
  .tabbar{display:flex;}
  body{padding-bottom:calc(72px + env(safe-area-inset-bottom,0px));}
}

/* roulang page: category1 */
:root{
  --brand:#1D5FD0;
  --brand-600:#1750b3;
  --brand-050:#EAF1FD;
  --amber:#F5A524;
  --amber-050:#FFF6E6;
  --teal:#29B39C;
  --teal-050:#E8F7F4;
  --bg:#F5F8FD;
  --surface:#FFFFFF;
  --text:#122240;
  --text-2:#5B6B84;
  --text-3:#93A0B5;
  --line:#E4EBF7;
  --r-card:16px;
  --r-btn:10px;
  --r-img:12px;
  --r-pill:999px;
  --sh-1:0 8px 24px rgba(20,58,120,.08);
  --sh-2:0 14px 34px rgba(20,58,120,.14);
  --sec:96px;
  --wrap:1200px;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.75;
  font-weight:400;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-600);text-decoration:underline;}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--text);line-height:1.3;}
h1{font-size:clamp(28px,4vw,44px);line-height:1.25;letter-spacing:-.5px;}
h2{font-size:clamp(22px,2.6vw,30px);}
h3{font-size:18px;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(29,95,208,.25);border-radius:6px;}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px;}
.sec{padding:var(--sec) 0;}
.sec-tight{padding:64px 0;}
.sec-head{margin-bottom:40px;max-width:760px;}
.sec-head .eyebrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;font-weight:700;letter-spacing:.5px;color:var(--brand);
  background:var(--brand-050);border-radius:var(--r-pill);padding:4px 12px;margin-bottom:14px;
}
.sec-head h2{margin-bottom:12px;}
.sec-head p{color:var(--text-2);font-size:15.5px;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 20px rgba(20,58,120,.08);}
.nav-inner{display:flex;align-items:center;gap:24px;height:68px;}
.logo{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:17px;color:var(--text);white-space:nowrap;}
.logo:hover{text-decoration:none;color:var(--text);}
.logo-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:10px;
  background:linear-gradient(135deg,var(--brand),#3f83ec);
  color:#fff;font-size:13px;font-weight:700;letter-spacing:.5px;flex:0 0 auto;
}
.nav-menu{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-menu a{
  position:relative;color:var(--text-2);font-size:15px;font-weight:500;
  padding:8px 14px;border-radius:8px;transition:color .2s ease,background .2s ease;
}
.nav-menu a:hover{color:var(--brand);background:var(--brand-050);text-decoration:none;}
.nav-menu a.active{color:var(--brand);font-weight:700;}
.nav-menu a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:0;height:2px;
  background:var(--brand);border-radius:2px;
}
.nav-cta{margin-left:8px;}
.btn-main,.btn-line,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-btn);font-weight:700;font-size:15px;
  padding:12px 24px;border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn-main{background:var(--brand);color:#fff;box-shadow:0 6px 16px rgba(29,95,208,.22);}
.btn-main:hover{background:var(--brand-600);color:#fff;transform:translateY(-1px);text-decoration:none;box-shadow:0 10px 22px rgba(29,95,208,.26);}
.btn-line{background:#fff;color:var(--brand);border-color:#c7d9f5;}
.btn-line:hover{background:var(--brand-050);color:var(--brand-600);text-decoration:none;border-color:var(--brand);}
.btn-ghost{background:transparent;color:var(--brand);}
.btn-ghost:hover{background:var(--brand-050);text-decoration:none;}
.btn-sm{padding:9px 18px;font-size:14px;}
.btn-lg{padding:15px 34px;font-size:16.5px;border-radius:var(--r-pill);}

/* ============ 移动底部 Tab ============ */
.mobile-tabs{
  position:fixed;left:0;right:0;bottom:0;z-index:1040;
  display:none;background:rgba(255,255,255,.97);
  border-top:1px solid var(--line);
  padding:6px 4px calc(6px + env(safe-area-inset-bottom));
  backdrop-filter:blur(8px);
}
.mobile-tabs a{
  flex:1;display:flex;flex-direction:column;align-items:center;gap:2px;
  color:var(--text-3);font-size:11px;padding:6px 2px;border-radius:10px;
}
.mobile-tabs a i{font-size:19px;line-height:1;}
.mobile-tabs a:hover{text-decoration:none;color:var(--brand);}
.mobile-tabs a.active{color:var(--brand);font-weight:700;}

/* ============ 面包屑 ============ */
.crumb-bar{background:#fff;border-bottom:1px solid var(--line);}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--text-3);padding:14px 0;}
.crumb a{color:var(--text-2);}
.crumb a:hover{color:var(--brand);}
.crumb .sep{color:#c3cee0;}
.crumb .now{color:var(--text);font-weight:600;}

/* ============ Hero ============ */
.cat-hero{
  background:linear-gradient(180deg,#fff 0%,#F0F6FF 62%,var(--bg) 100%);
  padding:64px 0 72px;
}
.cat-hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:48px;align-items:center;}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--teal-050);color:#1c8474;font-size:13px;font-weight:700;
  border-radius:var(--r-pill);padding:6px 14px;margin-bottom:18px;
}
.hero-badge i{font-size:12px;}
.cat-hero h1{margin-bottom:16px;}
.cat-hero .lead{color:var(--text-2);font-size:16.5px;max-width:560px;margin-bottom:26px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:26px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-pill);
  padding:6px 14px;font-size:13px;color:var(--text-2);
}
.tag i{color:var(--amber);font-size:12px;}
.tag.is-teal i{color:var(--teal);}
.tag.is-blue i{color:var(--brand);}
.hero-visual{position:relative;}
.hero-visual img{
  width:100%;border-radius:var(--r-card);box-shadow:var(--sh-1);
  border:1px solid rgba(228,235,247,.9);object-fit:cover;aspect-ratio:4/3;
}
.hero-float{
  position:absolute;left:-16px;bottom:-18px;background:#fff;border-radius:14px;
  box-shadow:var(--sh-2);padding:14px 18px;display:flex;align-items:center;gap:12px;
  border:1px solid var(--line);
}
.hero-float i{font-size:20px;color:var(--teal);}
.hero-float b{display:block;font-size:14px;}
.hero-float span{font-size:12.5px;color:var(--text-3);}

/* ============ 索引导航 ============ */
.index-pills{
  display:flex;gap:10px;overflow-x:auto;padding:4px 0 14px;
  -webkit-overflow-scrolling:touch;scrollbar-width:none;
}
.index-pills::-webkit-scrollbar{display:none;}
.index-pills a{
  flex:0 0 auto;background:#fff;border:1px solid var(--line);border-radius:var(--r-pill);
  padding:8px 16px;font-size:13.5px;color:var(--text-2);font-weight:500;
}
.index-pills a:hover{border-color:var(--brand);color:var(--brand);text-decoration:none;}
.index-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:24px;
}
.index-card h3{font-size:16px;margin-bottom:6px;}
.index-card .hint{font-size:13px;color:var(--text-3);margin-bottom:16px;}
.index-list li + li{margin-top:4px;}
.index-list a{
  display:flex;align-items:center;gap:12px;
  padding:10px 12px;border-radius:10px;color:var(--text-2);font-size:14.5px;
  border-left:3px solid transparent;transition:all .2s ease;
}
.index-list a .num{
  width:26px;height:26px;border-radius:8px;background:var(--brand-050);color:var(--brand);
  display:inline-flex;align-items:center;justify-content:center;font-size:12.5px;font-weight:700;flex:0 0 auto;
}
.index-list a:hover{background:#F7FAFF;color:var(--brand);text-decoration:none;}
.index-list a.active{
  background:var(--brand-050);color:var(--brand);font-weight:700;
  border-left-color:var(--brand);
}
.index-foot{
  margin-top:18px;padding-top:18px;border-top:1px dashed var(--line);
  font-size:13px;color:var(--text-3);display:flex;gap:8px;align-items:flex-start;
}
.index-foot i{color:var(--amber);margin-top:3px;}

/* ============ 步骤流 ============ */
.steps-panel{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:36px 40px;
}
.step{position:relative;padding-left:88px;padding-bottom:36px;}
.step:last-child{padding-bottom:0;}
.step:last-child::before{display:none;}
.step::before{
  content:"";position:absolute;left:31px;top:56px;bottom:6px;width:2px;
  background:linear-gradient(180deg,var(--brand-050),var(--line));
}
.step-num{
  position:absolute;left:8px;top:0;width:48px;height:48px;border-radius:50%;
  background:#fff;border:2px solid var(--brand);color:var(--brand);
  display:flex;align-items:center;justify-content:center;
  font-weight:700;font-size:15px;box-shadow:0 4px 12px rgba(29,95,208,.12);
}
.step.is-done .step-num{background:var(--teal);border-color:var(--teal);color:#fff;box-shadow:0 4px 14px rgba(41,179,156,.28);}
.step.is-now .step-num{background:var(--amber);border-color:var(--amber);color:#fff;box-shadow:0 0 0 6px rgba(245,165,36,.16);}
.step h3{font-size:18px;margin-bottom:10px;}
.step p{color:var(--text-2);font-size:15.5px;}
.step-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px;}
.chip{
  display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:600;
  border-radius:var(--r-pill);padding:4px 12px;
}
.chip-blue{background:var(--brand-050);color:var(--brand);}
.chip-amber{background:var(--amber-050);color:#b5761a;}
.chip-teal{background:var(--teal-050);color:#1c8474;}
.chip-gray{background:#F1F4FA;color:var(--text-2);}
.note{
  margin-top:14px;background:#F8FBFF;border:1px solid var(--line);
  border-left:3px solid var(--amber);border-radius:10px;padding:12px 16px;
  font-size:14px;color:var(--text-2);
}
.note b{color:var(--text);font-weight:700;}

/* ============ 场景卡 ============ */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.scene-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:transform .25s ease,box-shadow .25s ease;
}
.scene-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.scene-card img{aspect-ratio:16/9;object-fit:cover;width:100%;}
.scene-body{padding:22px;display:flex;flex-direction:column;flex:1;gap:10px;}
.scene-body h3{font-size:17px;}
.scene-body p{color:var(--text-2);font-size:14.5px;}
.scene-list{margin-top:auto;padding-top:12px;display:flex;flex-direction:column;gap:8px;}
.scene-list span{display:flex;align-items:flex-start;gap:8px;font-size:14px;color:var(--text-2);}
.scene-list i{color:var(--teal);font-size:12px;margin-top:7px;}

/* ============ 对比 / 清单 ============ */
.check-panel{
  background:linear-gradient(135deg,#F3F8FF,#fff 68%);
  border:1px solid var(--line);border-radius:var(--r-card);padding:36px 40px;
  box-shadow:var(--sh-1);
}
.check-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px 32px;margin-top:22px;}
.check-item{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--text-2);}
.check-item i{
  width:22px;height:22px;border-radius:50%;background:var(--teal-050);color:var(--teal);
  display:inline-flex;align-items:center;justify-content:center;font-size:11px;flex:0 0 auto;margin-top:4px;
}
.check-item b{color:var(--text);font-weight:700;}

/* ============ FAQ ============ */
.faq-wrap{max-width:880px;margin:0 auto;}
.accordion-item{
  background:#fff;border:1px solid var(--line) !important;border-radius:14px !important;
  margin-bottom:12px;overflow:hidden;box-shadow:var(--sh-1);
}
.accordion-button{
  font-size:17px;font-weight:700;color:var(--text);background:#fff;
  padding:20px 22px;border-radius:14px !important;box-shadow:none !important;
  border-left:3px solid transparent;
}
.accordion-button:not(.collapsed){
  color:var(--brand);background:#F8FBFF;border-left-color:var(--brand);
}
.accordion-button::after{
  background-image:none;content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;
  width:22px;height:22px;font-size:12px;display:flex;align-items:center;justify-content:center;
  color:var(--text-3);transition:transform .25s ease;
}
.accordion-button:not(.collapsed)::after{transform:rotate(180deg);color:var(--brand);}
.accordion-body{padding:4px 22px 22px;color:var(--text-2);font-size:15px;line-height:1.85;}

/* ============ CTA ============ */
.cta-band{
  background:linear-gradient(135deg,#EAF1FD 0%,#F7FAFF 52%,#FFFFFF 100%);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  text-align:center;padding:72px 0;
}
.cta-band h2{margin-bottom:14px;}
.cta-band p{color:var(--text-2);max-width:620px;margin:0 auto 28px;font-size:15.5px;}

/* ============ 资讯卡 ============ */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:transform .25s ease,box-shadow .25s ease;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.news-card img{aspect-ratio:16/9;object-fit:cover;width:100%;}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1;}
.news-body .badge{
  align-self:flex-start;background:var(--brand-050);color:var(--brand);
  font-size:12px;font-weight:700;border-radius:var(--r-pill);padding:4px 12px;margin-bottom:12px;
}
.news-body h3{font-size:16.5px;margin-bottom:8px;}
.news-card:hover h3{color:var(--brand);}
.news-body p{color:var(--text-2);font-size:14.5px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-foot{
  margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--text-3);border-top:1px solid var(--line);
}
.news-foot i{color:var(--brand);}

/* ============ 页脚 ============ */
.site-footer{background:#EDF2FA;border-top:1px solid var(--line);padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:32px;}
.footer-brand p{color:var(--text-2);font-size:14.5px;margin-top:16px;max-width:360px;}
.footer-title{font-size:15px;margin-bottom:16px;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{color:var(--text-2);font-size:14.5px;}
.footer-links a:hover{color:var(--brand);}
.footer-info{display:flex;flex-direction:column;gap:12px;color:var(--text-2);font-size:14px;}
.footer-info i{color:var(--brand);width:18px;}
.footer-bottom{
  margin-top:48px;padding:20px 0;border-top:1px solid #DDE5F2;
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}

/* ============ 响应式 ============ */
@media (min-width:1200px){
  .wrap{max-width:1240px;}
}
@media (max-width:1199.98px){
  :root{--sec:80px;}
  .cat-hero-grid{gap:36px;}
}
@media (max-width:991.98px){
  :root{--sec:64px;}
  .nav-menu{display:none;}
  .nav-cta{margin-left:auto;}
  .cat-hero-grid{grid-template-columns:1fr;gap:32px;}
  .hero-visual img{aspect-ratio:16/10;}
  .hero-float{left:12px;bottom:-16px;}
  .scene-grid{grid-template-columns:repeat(2,1fr);}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px 24px;}
  .steps-panel{padding:28px 24px;}
}
@media (max-width:767.98px){
  :root{--sec:56px;}
  body{padding-bottom:calc(72px + env(safe-area-inset-bottom));}
  .wrap{padding:0 16px;}
  .mobile-tabs{display:flex;}
  .nav-inner{height:62px;gap:12px;}
  .logo{font-size:15.5px;}
  .logo-mark{width:30px;height:30px;font-size:12px;}
  .cat-hero{padding:40px 0 52px;}
  .hero-actions .btn-main,.hero-actions .btn-line{flex:1 1 100%;width:100%;}
  .hero-actions{gap:12px;}
  .step{padding-left:66px;padding-bottom:30px;}
  .step::before{left:22px;top:48px;}
  .step-num{width:42px;height:42px;font-size:14px;left:2px;}
  .check-grid{grid-template-columns:1fr;}
  .check-panel{padding:26px 20px;}
  .cta-band{padding:52px 0;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;gap:6px;}
}
@media (max-width:575.98px){
  .scene-grid,.news-grid{grid-template-columns:1fr;}
  .steps-panel{padding:22px 18px;}
  .step h3{font-size:16.5px;}
  .sec-head{margin-bottom:28px;}
  .hero-float{padding:10px 14px;gap:8px;}
  .hero-float b{font-size:13px;}
}

/* roulang page: category3 */
:root{
  --brand:#1D5FD0;
  --brand-dark:#1750B4;
  --brand-soft:#EAF2FF;
  --amber:#F5A524;
  --amber-soft:#FFF6E6;
  --teal:#29B39C;
  --teal-soft:#E8F7F4;
  --bg:#F5F8FD;
  --surface:#FFFFFF;
  --text:#122240;
  --text-2:#5B6B84;
  --text-3:#93A0B5;
  --line:#E4EBF7;
  --r-card:16px;
  --r-btn:10px;
  --r-img:12px;
  --r-pill:999px;
  --shadow:0 8px 24px rgba(20,58,120,.08);
  --shadow-hover:0 14px 34px rgba(20,58,120,.14);
  --gutter:24px;
  --section-gap:88px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.7;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand-dark);text-decoration:underline}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--text);line-height:1.3}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(29,95,208,.25);border-radius:8px}
.wrap{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:var(--gutter);
  padding-right:var(--gutter);
}
@media (min-width:1200px){
  .wrap{max-width:1240px}
}

/* ---------- 按钮 ---------- */
.btn-main,.btn-line,.btn-ghost{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  font-size:15px;
  font-weight:600;
  line-height:1;
  padding:14px 26px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease;
  text-decoration:none!important;
}
.btn-main{background:var(--brand);color:#fff;box-shadow:0 8px 20px rgba(29,95,208,.22)}
.btn-main:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:0 12px 26px rgba(29,95,208,.28)}
.btn-main:active{transform:translateY(0)}
.btn-line{background:#fff;color:var(--brand);border-color:#C7DAF8}
.btn-line:hover{background:var(--brand-soft);color:var(--brand-dark);border-color:var(--brand)}
.btn-ghost{background:transparent;color:var(--brand);border-color:transparent}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-dark)}
.btn-pill{border-radius:var(--r-pill)}
.btn-lg-main{padding:17px 38px;font-size:16px}
.btn-sm{padding:10px 18px;font-size:14px}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 20px rgba(20,58,120,.07)}
.nav-inner{
  height:68px;
  display:flex;
  align-items:center;
  gap:24px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:18px;
  font-weight:700;
  color:var(--text)!important;
  text-decoration:none!important;
  white-space:nowrap;
}
.logo-mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:34px;
  height:34px;
  border-radius:10px;
  background:linear-gradient(135deg,var(--brand),#3E7EE8);
  color:#fff;
  font-size:14px;
  font-weight:700;
  letter-spacing:.5px;
}
.nav-menu{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:auto;
}
.nav-menu a{
  position:relative;
  display:block;
  padding:10px 14px;
  font-size:15px;
  color:var(--text-2);
  border-radius:8px;
  text-decoration:none!important;
}
.nav-menu a:hover{color:var(--brand);background:var(--brand-soft)}
.nav-menu a.active{color:var(--brand);font-weight:600}
.nav-menu a.active::after{
  content:"";
  position:absolute;
  left:14px;
  right:14px;
  bottom:2px;
  height:2px;
  border-radius:2px;
  background:var(--brand);
}
.nav-cta{margin-left:8px}

/* ---------- 面包屑 ---------- */
.crumb-bar{background:#fff;border-bottom:1px solid var(--line)}
.crumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:13.5px;
  color:var(--text-3);
  padding:14px 0;
}
.crumb a{color:var(--text-2);text-decoration:none}
.crumb a:hover{color:var(--brand)}
.crumb .sep{color:#C3CEE2}
.crumb .cur{color:var(--text);font-weight:600}

/* ---------- Hero ---------- */
.hero{
  background:linear-gradient(180deg,#FFFFFF 0%,#F2F7FF 62%,var(--bg) 100%);
  padding:64px 0 72px;
}
.hero-grid{
  display:grid;
  grid-template-columns:55fr 45fr;
  gap:56px;
  align-items:center;
}
.badge-status{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:7px 16px;
  border-radius:var(--r-pill);
  background:var(--teal-soft);
  color:#1B8873;
  font-size:13px;
  font-weight:600;
  margin-bottom:20px;
}
.badge-status i{font-size:12px}
.hero h1{
  font-size:clamp(28px,4vw,44px);
  line-height:1.25;
  letter-spacing:-.4px;
  margin-bottom:18px;
}
.hero h1 em{font-style:normal;color:var(--brand)}
.hero-sub{
  font-size:17px;
  color:var(--text-2);
  max-width:520px;
  margin-bottom:26px;
}
.hero-points{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-bottom:30px;
}
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:6px 14px;
  border-radius:var(--r-pill);
  background:#fff;
  border:1px solid var(--line);
  font-size:13px;
  color:var(--text-2);
}
.tag i{color:var(--amber);font-size:12px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px}
.hero-visual{position:relative}
.hero-visual img{
  width:100%;
  border-radius:16px;
  box-shadow:var(--shadow);
  border:1px solid var(--line);
  object-fit:cover;
  aspect-ratio:4/3;
}
.hero-float{
  position:absolute;
  left:-18px;
  bottom:-18px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:14px;
  box-shadow:var(--shadow);
  padding:14px 18px;
  display:flex;
  align-items:center;
  gap:12px;
}
.hero-float .num{
  font-size:22px;
  font-weight:700;
  color:var(--brand);
  line-height:1;
}
.hero-float .lbl{font-size:12.5px;color:var(--text-3)}

/* ---------- 通用板块 ---------- */
.section{padding:var(--section-gap) 0}
.section-alt{background:#fff}
.section-head{max-width:680px;margin-bottom:44px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section h2{
  font-size:clamp(22px,2.6vw,30px);
  margin-bottom:14px;
}
.section-head p{color:var(--text-2);font-size:15.5px}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:600;
  color:var(--brand);
  background:var(--brand-soft);
  padding:6px 14px;
  border-radius:var(--r-pill);
  margin-bottom:16px;
}

/* ---------- 时间轴 ---------- */
.timeline{
  position:relative;
  padding:8px 0 4px;
}
.timeline::before{
  content:"";
  position:absolute;
  left:50%;
  top:0;
  bottom:0;
  width:2px;
  transform:translateX(-50%);
  background:linear-gradient(180deg,rgba(29,95,208,0) 0%,var(--line) 8%,var(--line) 92%,rgba(29,95,208,0) 100%);
}
.tl-item{
  position:relative;
  display:flex;
  margin-bottom:34px;
}
.tl-item:last-child{margin-bottom:0}
.tl-item::before{
  content:"";
  position:absolute;
  left:50%;
  top:28px;
  width:14px;
  height:14px;
  border-radius:50%;
  background:var(--brand);
  border:3px solid #fff;
  box-shadow:0 0 0 2px rgba(29,95,208,.22);
  transform:translateX(-50%);
  z-index:2;
}
.tl-item.is-now::before{background:var(--amber);box-shadow:0 0 0 2px rgba(245,165,36,.28)}
.tl-item:nth-child(odd){justify-content:flex-start}
.tl-item:nth-child(even){justify-content:flex-end}
.tl-card{
  width:calc(50% - 46px);
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow);
  padding:24px;
  transition:transform .2s ease,box-shadow .2s ease;
}
.tl-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.tl-node{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12.5px;
  font-weight:700;
  letter-spacing:.4px;
  color:var(--brand);
  background:var(--brand-soft);
  border-radius:var(--r-pill);
  padding:5px 13px;
  margin-bottom:14px;
}
.tl-item.is-now .tl-node{color:#A96A00;background:var(--amber-soft)}
.tl-card h3{font-size:18px;margin-bottom:10px}
.tl-card p{font-size:14.5px;color:var(--text-2)}
.tl-meta{
  display:flex;
  align-items:center;
  gap:8px;
  margin-top:16px;
  padding-top:14px;
  border-top:1px dashed var(--line);
  font-size:12.5px;
  color:var(--text-3);
}
.tl-meta i{color:var(--teal)}

/* ---------- 保障要点卡 ---------- */
.guard-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.guard-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:28px 24px;
  box-shadow:var(--shadow);
  position:relative;
  overflow:hidden;
  transition:transform .2s ease,box-shadow .2s ease;
}
.guard-card::before{
  content:"";
  position:absolute;
  left:0;
  right:0;
  top:0;
  height:4px;
  background:var(--brand);
}
.guard-card.amber::before{background:var(--amber)}
.guard-card.teal::before{background:var(--teal)}
.guard-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.guard-icon{
  width:48px;
  height:48px;
  border-radius:14px;
  display:flex;
  align-items:center;
  justify-content:center;
  background:var(--brand-soft);
  color:var(--brand);
  font-size:20px;
  margin-bottom:18px;
}
.guard-card.amber .guard-icon{background:var(--amber-soft);color:#C98207}
.guard-card.teal .guard-icon{background:var(--teal-soft);color:#1B8873}
.guard-card h3{font-size:18px;margin-bottom:10px}
.guard-card p{font-size:14.5px;color:var(--text-2)}

/* ---------- 自查清单 ---------- */
.check-layout{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:48px;
  align-items:center;
}
.check-list{display:grid;gap:14px}
.check-item{
  display:flex;
  gap:14px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:14px;
  padding:18px 20px;
  box-shadow:0 4px 14px rgba(20,58,120,.05);
}
.check-item .ic{
  flex:0 0 24px;
  width:24px;
  height:24px;
  border-radius:50%;
  background:var(--teal-soft);
  color:#1B8873;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:12px;
  margin-top:3px;
}
.check-item h3{font-size:16px;margin-bottom:5px}
.check-item p{font-size:14px;color:var(--text-2)}
.check-visual img{
  width:100%;
  border-radius:16px;
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  aspect-ratio:5/4;
  object-fit:cover;
}

/* ---------- 资讯入口卡 ---------- */
.news-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.news-card{
  display:flex;
  flex-direction:column;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--shadow);
  transition:transform .2s ease,box-shadow .2s ease;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.news-card:hover h3{color:var(--brand)}
.news-thumb{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  border-bottom:1px solid var(--line);
}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.news-body .chip{
  align-self:flex-start;
  font-size:12px;
  color:var(--brand);
  background:var(--brand-soft);
  padding:4px 12px;
  border-radius:var(--r-pill);
  margin-bottom:12px;
}
.news-body h3{font-size:17px;margin-bottom:10px;transition:color .2s ease}
.news-body p{
  font-size:14px;
  color:var(--text-2);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
  margin-bottom:18px;
}
.news-foot{
  margin-top:auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-size:12.5px;
  color:var(--text-3);
  border-top:1px dashed var(--line);
  padding-top:14px;
}
.news-foot .go{color:var(--brand);font-weight:600}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px;max-width:900px;margin:0 auto}
.faq-item{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:12px;
  overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item.open{border-color:#C7DAF8;box-shadow:var(--shadow)}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  text-align:left;
  background:none;
  border:0;
  padding:20px 22px;
  font-size:17px;
  font-weight:700;
  color:var(--text);
  cursor:pointer;
}
.faq-q .fa-chevron-down{color:var(--text-3);font-size:14px;transition:transform .25s ease;flex:0 0 auto}
.faq-item.open .faq-q .fa-chevron-down{transform:rotate(180deg);color:var(--brand)}
.faq-a{
  display:none;
  padding:0 22px 22px 22px;
  border-left:3px solid var(--brand);
  margin-left:0;
  font-size:14.5px;
  color:var(--text-2);
}
.faq-item.open .faq-a{display:block}

/* ---------- CTA ---------- */
.cta-band{
  background:linear-gradient(180deg,#F4F8FF 0%,#FFFFFF 100%);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  padding:72px 0;
  text-align:center;
}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:14px}
.cta-band p{color:var(--text-2);max-width:600px;margin:0 auto 28px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:center}

/* ---------- 页脚 ---------- */
.site-footer{
  background:#EDF3FC;
  border-top:1px solid var(--line);
  padding:64px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:32px;
  padding-bottom:40px;
}
.footer-brand p{
  margin-top:16px;
  font-size:14px;
  color:var(--text-2);
  max-width:330px;
}
.footer-title{
  font-size:15px;
  font-weight:700;
  margin-bottom:16px;
  color:var(--text);
}
.footer-links{display:grid;gap:10px}
.footer-links a{font-size:14px;color:var(--text-2);text-decoration:none}
.footer-links a:hover{color:var(--brand);text-decoration:underline}
.footer-info{display:grid;gap:12px;font-size:14px;color:var(--text-2)}
.footer-info span{display:flex;gap:8px;align-items:flex-start}
.footer-info i{color:var(--brand);margin-top:4px}
.footer-bottom{
  border-top:1px solid #DCE7F7;
  padding:20px 0;
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  justify-content:space-between;
  font-size:13px;
  color:var(--text-3);
}

/* ---------- 移动端底部 Tab ---------- */
.mobile-tab{
  display:none;
  position:fixed;
  left:0;
  right:0;
  bottom:0;
  z-index:1040;
  background:#fff;
  border-top:1px solid var(--line);
  padding:6px 4px calc(6px + env(safe-area-inset-bottom));
  box-shadow:0 -6px 20px rgba(20,58,120,.08);
}
.mobile-tab a{
  flex:1;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:3px;
  padding:6px 2px;
  font-size:11.5px;
  color:var(--text-3);
  text-decoration:none!important;
}
.mobile-tab a i{font-size:20px;line-height:1}
.mobile-tab a.active{color:var(--brand);font-weight:600}

/* ---------- 响应式 ---------- */
@media (max-width:991.98px){
  :root{--section-gap:64px}
  .nav-menu{display:none}
  .nav-inner{justify-content:space-between}
  .hero{padding:44px 0 56px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-visual{order:2}
  .hero-sub{max-width:none}
  .check-layout{grid-template-columns:1fr;gap:32px}
  .guard-grid{grid-template-columns:1fr 1fr}
  .news-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:767.98px){
  :root{--gutter:16px;--section-gap:52px}
  body{padding-bottom:calc(72px + env(safe-area-inset-bottom))}
  .mobile-tab{display:flex}
  .nav-cta .btn-main{padding:9px 14px;font-size:13.5px}
  .logo{font-size:16px}
  .logo-mark{width:30px;height:30px;font-size:13px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn-main,.hero-actions .btn-line,.hero-actions .btn-ghost{width:100%}
  .hero-float{left:12px;bottom:-14px;padding:12px 14px}
  .guard-grid{grid-template-columns:1fr}
  .news-grid{grid-template-columns:1fr}
  .timeline::before{left:9px;transform:none}
  .tl-item{padding-left:38px;justify-content:flex-start!important}
  .tl-item::before{left:3px;top:24px;transform:none}
  .tl-card{width:100%}
  .cta-band{padding:56px 0}
  .cta-actions .btn-main,.cta-actions .btn-line{width:100%}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .footer-brand{grid-column:1 / -1}
  .footer-bottom{flex-direction:column;gap:6px}
  .faq-q{font-size:15.5px;padding:17px 16px}
  .faq-a{padding:0 16px 18px 16px;font-size:14px}
}
@media (max-width:575.98px){
  .footer-grid{grid-template-columns:1fr}
  .hero h1{font-size:27px}
}

/* roulang page: category2 */
:root{
  --brand:#1D5FD0;
  --brand-dark:#1750b3;
  --brand-soft:#EAF1FD;
  --amber:#F5A524;
  --amber-deep:#B27400;
  --amber-soft:#FEF4E3;
  --teal:#29B39C;
  --teal-soft:#E7F7F4;
  --bg:#F5F8FD;
  --surface:#FFFFFF;
  --ink:#122240;
  --ink-2:#5B6B84;
  --ink-3:#93A0B5;
  --line:#E4EBF7;
  --footer-bg:#E9EFF9;
  --r-card:16px;
  --r-btn:10px;
  --r-pill:999px;
  --sh:0 8px 24px rgba(20,58,120,.08);
  --sh-hover:0 14px 34px rgba(20,58,120,.14);
  --sec-y:88px;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  padding-bottom:0;
}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-dark);text-decoration:underline;}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--ink);line-height:1.3;}
h1{font-size:clamp(28px,4vw,44px);line-height:1.25;}
h2{font-size:clamp(22px,2.6vw,30px);line-height:1.35;}
h3{font-size:18px;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(29,95,208,.25);border-radius:8px;}
.btn:focus,.btn:active,.btn:focus-visible{box-shadow:none;}

/* 布局容器 */
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
@media (min-width:1200px){.wrap{max-width:1240px;}}
.sec{padding:var(--sec-y) 0;}
.sec.alt{background:#FFFFFF;}
.sec-head{max-width:780px;margin-bottom:42px;}
.sec-head .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;letter-spacing:.06em;color:var(--brand);margin-bottom:12px;}
.sec-head .eyebrow::before{content:"";width:20px;height:2px;background:var(--amber);border-radius:2px;}
.sec-head h2{margin-bottom:14px;}
.sec-head p{color:var(--ink-2);font-size:15px;}

/* 按钮 */
.btn-main,.btn-ghost,.btn-line{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1.4;padding:12px 24px;
  border-radius:var(--r-btn);cursor:pointer;transition:all .22s ease;white-space:nowrap;
}
.btn-main{background:var(--brand);border:1px solid var(--brand);color:#fff;box-shadow:0 6px 16px rgba(29,95,208,.22);}
.btn-main:hover{background:var(--brand-dark);border-color:var(--brand-dark);color:#fff;transform:translateY(-1px);text-decoration:none;box-shadow:0 10px 22px rgba(29,95,208,.26);}
.btn-ghost{background:transparent;border:1px solid transparent;color:var(--brand);}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-dark);text-decoration:none;}
.btn-line{background:#fff;border:1px solid var(--brand);color:var(--brand);}
.btn-line:hover{background:var(--brand-soft);color:var(--brand-dark);text-decoration:none;}
.btn-sm{padding:9px 18px;font-size:14px;}
.btn-lg{padding:15px 34px;font-size:16px;border-radius:var(--r-pill);}
.btn-main:active,.btn-line:active,.btn-ghost:active{transform:translateY(0);}

/* 徽章 / 标签 */
.pill{display:inline-flex;align-items:center;gap:6px;padding:5px 13px;border-radius:var(--r-pill);font-size:13px;font-weight:600;line-height:1.6;}
.pill-brand{background:var(--brand-soft);color:var(--brand);}
.pill-amber{background:var(--amber-soft);color:var(--amber-deep);}
.pill-teal{background:var(--teal-soft);color:#1B8B79;}
.dot{width:7px;height:7px;border-radius:50%;background:var(--teal);display:inline-block;}
.dot.amber{background:var(--amber);}

/* 头部导航 */
.site-header{position:sticky;top:0;z-index:1030;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .25s ease;}
.site-header.is-stuck{box-shadow:0 6px 20px rgba(20,58,120,.09);}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:68px;}
.logo{display:inline-flex;align-items:center;gap:10px;font-size:18px;font-weight:700;color:var(--ink);white-space:nowrap;}
.logo:hover{color:var(--ink);text-decoration:none;}
.logo-mark{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:10px;background:linear-gradient(135deg,#2B6FE0,#1D5FD0);color:#fff;font-size:14px;font-weight:700;letter-spacing:0;flex:0 0 36px;}
.nav-menu{display:flex;align-items:center;gap:4px;}
.nav-menu a{position:relative;padding:9px 13px;font-size:15px;color:var(--ink-2);border-radius:8px;transition:all .2s ease;}
.nav-menu a:hover{color:var(--brand);background:var(--brand-soft);text-decoration:none;}
.nav-menu a.active{color:var(--brand);font-weight:600;}
.nav-menu a.active::after{content:"";position:absolute;left:13px;right:13px;bottom:-2px;height:2px;border-radius:2px;background:var(--brand);}
.nav-cta{display:flex;align-items:center;}

/* 移动端底部 Tab */
.tabbar{display:none;}
@media (max-width:767px){
  body{padding-bottom:78px;}
  .tabbar{
    position:fixed;left:0;right:0;bottom:0;z-index:1040;display:flex;
    background:rgba(255,255,255,.97);backdrop-filter:blur(10px);
    border-top:1px solid var(--line);
    padding:6px 4px calc(6px + env(safe-area-inset-bottom));
  }
  .tabbar a{flex:1;display:flex;flex-direction:column;align-items:center;gap:3px;padding:4px 2px;font-size:11px;color:var(--ink-3);}
  .tabbar a i{font-size:19px;}
  .tabbar a:hover{text-decoration:none;color:var(--brand);}
  .tabbar a.active{color:var(--brand);font-weight:600;}
}

/* 面包屑 */
.crumb{padding:20px 0 0;font-size:13.5px;color:var(--ink-3);}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin:0;padding:0;list-style:none;}
.crumb a{color:var(--ink-2);}
.crumb a:hover{color:var(--brand);}
.crumb li.current{color:var(--ink);font-weight:600;}
.crumb .sep{color:var(--ink-3);}

/* 内页首屏 */
.page-hero{background:linear-gradient(180deg,#EAF1FD 0%,#F5F8FD 100%);padding:40px 0 76px;}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:center;}
.hero-copy .pill{margin-bottom:18px;}
.hero-copy h1{margin-bottom:16px;}
.hero-copy h1 .hl{color:var(--brand);}
.hero-sub{font-size:17px;color:var(--ink-2);max-width:560px;margin-bottom:14px;}
.hero-points{display:flex;flex-wrap:wrap;gap:10px 22px;margin-bottom:28px;font-size:14.5px;color:var(--ink-2);}
.hero-points span{display:inline-flex;align-items:center;gap:8px;}
.hero-points i{color:var(--teal);font-size:13px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}
.hero-visual img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-card);box-shadow:var(--sh);border:1px solid rgba(255,255,255,.9);}

/* 分组卡片 */
.group-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.group-card{background:#fff;border-radius:var(--r-card);padding:26px;box-shadow:var(--sh);border-top:4px solid var(--brand);transition:transform .25s ease,box-shadow .25s ease;display:flex;flex-direction:column;}
.group-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);}
.group-card.amber{border-top-color:var(--amber);}
.group-card.teal{border-top-color:var(--teal);}
.group-head{display:flex;align-items:flex-start;justify-content:space-between;gap:14px;margin-bottom:10px;}
.group-head h3{font-size:18px;}
.group-icon{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;background:var(--brand-soft);color:var(--brand);font-size:17px;flex:0 0 42px;}
.group-card.amber .group-icon{background:var(--amber-soft);color:var(--amber-deep);}
.group-card.teal .group-icon{background:var(--teal-soft);color:#1B8B79;}
.group-desc{font-size:14.5px;color:var(--ink-2);margin-bottom:14px;}
.tick-list li{display:flex;gap:10px;align-items:flex-start;padding:7px 0;font-size:14.5px;color:var(--ink-2);}
.tick-list i{color:var(--teal);font-size:12px;margin-top:7px;}
.group-card.amber .tick-list i{color:var(--amber);}

/* 权益对比 */
.compare{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.compare-col{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:28px;box-shadow:var(--sh);display:flex;flex-direction:column;transition:transform .25s ease,box-shadow .25s ease;}
.compare-col:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);}
.compare-col.pro{border-color:#F2D9A8;box-shadow:0 10px 30px rgba(245,165,36,.13);}
.compare-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:8px;}
.compare-top h3{font-size:19px;}
.compare-note{font-size:14px;color:var(--ink-2);min-height:44px;}
.cmp-list{margin-top:16px;}
.cmp-list li{display:flex;gap:10px;align-items:flex-start;padding:11px 0;border-bottom:1px dashed var(--line);font-size:14.5px;color:var(--ink-2);}
.cmp-list li:last-child{border-bottom:0;}
.cmp-list i{width:20px;height:20px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;font-size:10px;flex:0 0 20px;margin-top:5px;}
.cmp-base i{background:#EEF2F9;color:var(--ink-3);}
.cmp-pro i{background:var(--amber-soft);color:var(--amber-deep);}
.cmp-foot{margin-top:auto;padding-top:20px;}

/* 步骤 */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px;}
.step{position:relative;background:#fff;border-radius:var(--r-card);padding:26px 24px;box-shadow:var(--sh);transition:transform .25s ease,box-shadow .25s ease;}
.step:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);}
.step-num{font-size:32px;font-weight:800;line-height:1;color:var(--amber);letter-spacing:.02em;margin-bottom:16px;}
.step h3{font-size:17px;margin-bottom:8px;}
.step p{font-size:14px;color:var(--ink-2);}

/* 查询卡片 */
.query-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;}
.query-card{display:flex;gap:16px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:24px;transition:all .25s ease;}
.query-card:hover{transform:translateY(-4px);box-shadow:var(--sh);border-color:#CBDDF8;}
.query-icon{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;background:var(--brand-soft);color:var(--brand);font-size:18px;flex:0 0 44px;}
.query-card h3{font-size:17px;margin-bottom:6px;}
.query-card p{font-size:14px;color:var(--ink-2);}

/* FAQ */
.faq-list{max-width:900px;}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:var(--sh);margin-bottom:12px;overflow:hidden;}
.faq-item:last-child{margin-bottom:0;}
.faq-q{display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%;padding:18px 22px;background:none;border:0;text-align:left;font-size:17px;font-weight:700;color:var(--ink);cursor:pointer;transition:color .2s ease;}
.faq-q:hover{color:var(--brand);}
.faq-q i{color:var(--brand);font-size:14px;transition:transform .28s ease;flex:0 0 auto;}
.faq-q[aria-expanded="true"] i{transform:rotate(180deg);}
.faq-a{position:relative;padding:0 22px 20px 22px;font-size:15px;color:var(--ink-2);}
.faq-a::before{content:"";position:absolute;left:0;top:2px;bottom:20px;width:3px;border-radius:3px;background:transparent;transition:background .22s ease;}
.faq-item.is-open .faq-a::before{background:var(--brand);}

/* CTA 与资讯 */
.cta-band{background:linear-gradient(180deg,#EAF1FD 0%,#FFFFFF 100%);border:1px solid var(--line);border-radius:24px;padding:56px 28px;text-align:center;box-shadow:var(--sh);}
.cta-band h2{margin-bottom:14px;}
.cta-band p{color:var(--ink-2);font-size:15.5px;max-width:640px;margin:0 auto 26px;}
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin-top:26px;}
.news-card{display:flex;flex-direction:column;height:100%;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh);transition:transform .25s ease,box-shadow .25s ease;}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);text-decoration:none;}
.news-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--brand-soft);}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease;}
.news-card:hover .news-thumb img{transform:scale(1.05);}
.news-body{display:flex;flex-direction:column;flex:1;gap:10px;padding:20px;}
.news-body h3{font-size:17px;line-height:1.5;transition:color .2s ease;}
.news-card:hover .news-body h3{color:var(--brand);}
.news-body p{font-size:14px;color:var(--ink-3);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:13px;color:var(--ink-3);}
.news-foot i{color:var(--brand);}

/* 页脚 */
.site-footer{background:var(--footer-bg);border-top:1px solid var(--line);padding:64px 0 0;color:var(--ink-2);}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.5fr;gap:32px;padding-bottom:44px;}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.85;color:var(--ink-2);max-width:340px;}
.footer-title{font-size:15px;color:var(--ink);margin-bottom:16px;}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a{font-size:14px;color:var(--ink-2);}
.footer-links a:hover{color:var(--brand);}
.footer-info{display:flex;flex-direction:column;gap:11px;font-size:14px;}
.footer-info i{color:var(--brand);margin-right:7px;width:16px;}
.footer-bottom{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;border-top:1px solid #D8E2F2;padding:20px 0 28px;font-size:13px;color:var(--ink-3);}

/* 响应式 */
@media (max-width:1199px){
  .hero-grid{gap:36px;}
}
@media (max-width:991px){
  :root{--sec-y:64px;}
  .nav-menu{display:none;}
  .hero-grid{grid-template-columns:1fr;gap:30px;}
  .hero-visual{order:2;}
  .compare{grid-template-columns:1fr;}
  .compare-note{min-height:0;}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));}
  .query-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .news-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:767px){
  :root{--sec-y:52px;}
  .wrap{padding:0 16px;}
  .page-hero{padding:28px 0 56px;}
  .group-grid{grid-template-columns:1fr;}
  .cta-band{padding:40px 20px;border-radius:18px;}
  .crumb{padding-top:16px;}
}
@media (max-width:575px){
  .steps{grid-template-columns:1fr;}
  .query-grid{grid-template-columns:1fr;}
  .news-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .hero-actions{flex-direction:column;}
  .hero-actions .btn-main,.hero-actions .btn-ghost{width:100%;}
  .nav-inner{height:62px;gap:12px;}
  .logo{font-size:16px;}
  .logo-mark{width:32px;height:32px;flex:0 0 32px;font-size:13px;}
}

/* roulang page: category4 */
:root{
  --brand:#1D5FD0;
  --brand-dark:#164BA8;
  --brand-soft:#EAF1FD;
  --amber:#F5A524;
  --amber-soft:#FEF4E4;
  --teal:#29B39C;
  --teal-soft:#E8F7F3;
  --bg:#F5F8FD;
  --card:#FFFFFF;
  --ink:#122240;
  --ink-2:#5B6B84;
  --ink-3:#93A0B5;
  --line:#E4EBF7;
  --r-card:16px;
  --r-btn:10px;
  --r-img:12px;
  --r-pill:999px;
  --sh:0 8px 24px rgba(20,58,120,.08);
  --sh-hover:0 14px 34px rgba(20,58,120,.14);
  --sec:96px;
  --sec-sm:56px;
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
img{max-width:100%;display:block;border-radius:var(--r-img);}
a{color:var(--brand);text-decoration:none;transition:color .2s ease,background .2s ease,border-color .2s ease;}
a:hover{color:var(--brand-dark);text-decoration:underline;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;color:var(--ink);}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(29,95,208,.28);border-radius:var(--r-btn);}

.wrap{max-width:var(--container);margin:0 auto;padding:0 24px;}
@media (min-width:1240px){.wrap{max-width:1240px;}}
@media (max-width:520px){.wrap{padding:0 16px;}}

/* ===== 按钮 ===== */
.btn-main,.btn-line,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;padding:12px 24px;border-radius:var(--r-btn);
  border:1px solid transparent;cursor:pointer;transition:all .22s ease;text-decoration:none;
}
.btn-main{background:var(--brand);border-color:var(--brand);color:#fff;}
.btn-main:hover{background:var(--brand-dark);border-color:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:0 10px 24px rgba(29,95,208,.28);text-decoration:none;}
.btn-line{background:#fff;border-color:var(--brand);color:var(--brand);}
.btn-line:hover{background:var(--brand-soft);color:var(--brand);transform:translateY(-1px);text-decoration:none;}
.btn-ghost{background:transparent;border-color:transparent;color:var(--brand);}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand);text-decoration:none;}
.btn-pill{border-radius:var(--r-pill);}
.btn-lg-main{padding:15px 34px;font-size:16px;}
.btn-sm{padding:9px 18px;font-size:14px;}

/* ===== 标签 ===== */
.badge-soft{display:inline-flex;align-items:center;gap:6px;background:var(--brand-soft);color:var(--brand);border-radius:var(--r-pill);padding:5px 14px;font-size:13px;font-weight:600;}
.badge-amber{display:inline-flex;align-items:center;gap:6px;background:var(--amber-soft);color:#B67508;border-radius:var(--r-pill);padding:5px 14px;font-size:13px;font-weight:600;}
.badge-teal{display:inline-flex;align-items:center;gap:6px;background:var(--teal-soft);color:#1B7C6C;border-radius:var(--r-pill);padding:5px 14px;font-size:13px;font-weight:600;}
.dot{width:7px;height:7px;border-radius:50%;background:currentColor;display:inline-block;}

/* ===== 顶部导航 ===== */
.site-header{
  position:sticky;top:0;z-index:50;background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 20px rgba(20,58,120,.08);}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:68px;gap:24px;}
.logo{display:inline-flex;align-items:center;gap:10px;font-size:18px;font-weight:700;color:var(--ink);text-decoration:none;white-space:nowrap;}
.logo:hover{color:var(--brand);text-decoration:none;}
.logo-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:10px;background:var(--brand);color:#fff;
  font-size:14px;font-weight:700;letter-spacing:.5px;flex:0 0 auto;
}
.nav-menu{display:flex;align-items:center;gap:6px;}
.nav-menu a{
  position:relative;font-size:15px;color:var(--ink-2);padding:22px 12px;
  border-bottom:2px solid transparent;font-weight:500;
}
.nav-menu a:hover{color:var(--brand);text-decoration:none;}
.nav-menu a.active{color:var(--brand);font-weight:600;border-bottom-color:var(--brand);}
.nav-cta{display:flex;align-items:center;gap:12px;}

/* ===== 内页 Hero ===== */
.page-hero{
  position:relative;overflow:hidden;
  background:#fff url('/assets/images/backpic/back-2.webp') center right/cover no-repeat;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(245,248,253,.98) 0%,rgba(245,248,253,.94) 42%,rgba(245,248,253,.62) 72%,rgba(245,248,253,.35) 100%);
}
.page-hero .wrap{position:relative;z-index:1;}
.hero-inner{padding:72px 0 64px;max-width:640px;}
.hero-badge{margin-bottom:18px;}
.page-hero h1{font-size:clamp(28px,4vw,44px);line-height:1.25;margin-bottom:16px;}
.page-hero h1 .hl{color:var(--brand);}
.hero-sub{font-size:clamp(15px,1.6vw,17px);color:var(--ink-2);line-height:1.85;margin-bottom:22px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px 22px;font-size:13px;color:var(--ink-3);align-items:center;}
.hero-meta span{display:inline-flex;align-items:center;gap:7px;}
.hero-meta i{color:var(--teal);}

/* ===== 面包屑 ===== */
.crumb-bar{background:var(--bg);border-bottom:1px solid var(--line);}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--ink-3);padding:14px 0;}
.crumb a{color:var(--ink-2);}
.crumb a:hover{color:var(--brand);}
.crumb .sep{color:var(--ink-3);}
.crumb .current{color:var(--ink);font-weight:600;}

/* ===== 问答主体 ===== */
.qa-section{padding:72px 0 88px;}
.qa-layout{display:grid;grid-template-columns:256px minmax(0,1fr);gap:56px;align-items:start;}
.qa-index{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:20px 16px;box-shadow:var(--sh);
  position:sticky;top:92px;
}
.qa-index-title{font-size:12.5px;font-weight:700;letter-spacing:1.5px;color:var(--ink-3);margin-bottom:12px;padding-left:12px;}
.qa-index a{
  display:block;font-size:15px;color:var(--ink-2);padding:11px 12px;border-radius:10px;
  border-left:3px solid transparent;transition:all .2s ease;
}
.qa-index a:hover{background:var(--brand-soft);color:var(--brand);text-decoration:none;}
.qa-index a.is-active{background:var(--brand-soft);color:var(--brand);border-left-color:var(--brand);font-weight:600;}

.qa-intro{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px 26px;box-shadow:var(--sh);margin-bottom:34px;
  display:flex;gap:18px;align-items:flex-start;
}
.qa-intro i{color:var(--amber);font-size:22px;margin-top:4px;}
.qa-intro p{font-size:15px;color:var(--ink-2);line-height:1.9;}

.qa-group{margin-bottom:64px;scroll-margin-top:96px;}
.qa-group:last-child{margin-bottom:0;}
.qa-group-title{
  font-size:clamp(22px,2.6vw,30px);margin-bottom:8px;display:flex;align-items:center;gap:12px;
}
.qa-group-title::before{content:"";width:5px;height:22px;border-radius:3px;background:var(--brand);display:inline-block;}
.qa-group-desc{font-size:14.5px;color:var(--ink-3);margin-bottom:28px;}

.qa-item{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px 26px;margin-bottom:20px;box-shadow:var(--sh);
  transition:box-shadow .25s ease,transform .25s ease,border-color .25s ease;
}
.qa-item:hover{box-shadow:var(--sh-hover);transform:translateY(-2px);border-color:#D6E2F6;}
.qa-q{font-size:17.5px;line-height:1.6;margin-bottom:14px;display:flex;gap:12px;align-items:flex-start;}
.q-mark{
  flex:0 0 auto;display:inline-flex;align-items:center;justify-content:center;
  width:26px;height:26px;border-radius:8px;background:var(--brand-soft);color:var(--brand);
  font-size:13px;font-weight:700;margin-top:2px;
}
.qa-a{font-size:15.5px;color:var(--ink-2);line-height:1.95;}
.qa-a p+p{margin-top:12px;}
.qa-a strong{color:var(--ink);font-weight:600;}
.qa-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}
.qa-tags span{font-size:12.5px;color:var(--ink-3);background:var(--bg);border:1px solid var(--line);border-radius:var(--r-pill);padding:3px 12px;}

.qa-sub{
  margin-top:18px;padding:18px 20px;border-left:3px dashed var(--line);
  background:#FBFCFE;border-radius:0 var(--r-img) var(--r-img) 0;
}
.qa-sub .qa-q{font-size:16px;margin-bottom:10px;color:var(--ink);}
.qa-sub .qa-q .q-mark{width:22px;height:22px;font-size:12px;background:var(--amber-soft);color:#B67508;}
.qa-sub p{font-size:15px;color:var(--ink-2);line-height:1.9;}

/* ===== 求助渠道 ===== */
.section{padding:var(--sec) 0;}
.section-head{max-width:680px;margin-bottom:44px;}
.section-head h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:14px;}
.section-head p{font-size:15.5px;color:var(--ink-2);line-height:1.85;}
.help-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:26px;}
.help-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh);display:flex;flex-direction:column;
  transition:transform .25s ease,box-shadow .25s ease;
}
.help-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);}
.help-card .thumb{aspect-ratio:16/9;overflow:hidden;}
.help-card .thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .4s ease;}
.help-card:hover .thumb img{transform:scale(1.04);}
.help-body{padding:22px 24px 26px;display:flex;flex-direction:column;flex:1;}
.help-body h3{font-size:18px;margin-bottom:10px;display:flex;align-items:center;gap:10px;}
.help-body h3 i{color:var(--brand);font-size:17px;}
.help-body p{font-size:14.5px;color:var(--ink-2);line-height:1.85;flex:1;}
.help-foot{margin-top:18px;font-size:13.5px;color:var(--ink-3);display:flex;align-items:center;gap:8px;}
.help-foot i{color:var(--teal);}

/* ===== 服务承诺 ===== */
.promise-band{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.promise-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;}
.promise-item{padding:6px 4px;}
.promise-item .p-ico{
  width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  font-size:18px;margin-bottom:14px;
}
.p-ico.blue{background:var(--brand-soft);color:var(--brand);}
.p-ico.amber{background:var(--amber-soft);color:#B67508;}
.p-ico.teal{background:var(--teal-soft);color:#1B7C6C;}
.promise-item h3{font-size:17px;margin-bottom:8px;}
.promise-item p{font-size:14.5px;color:var(--ink-2);line-height:1.85;}

/* ===== CTA ===== */
.cta-band{
  background:linear-gradient(180deg,#EAF1FD 0%,#F7FAFF 62%,#FFFFFF 100%);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  text-align:center;padding:80px 0;
}
.cta-band h2{font-size:clamp(22px,2.8vw,32px);margin-bottom:14px;}
.cta-band p{font-size:15.5px;color:var(--ink-2);margin-bottom:28px;}
.cta-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;}

/* ===== 资讯入口 ===== */
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.news-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px 24px;display:flex;flex-direction:column;box-shadow:var(--sh);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:#D6E2F6;}
.news-card .badge-soft{align-self:flex-start;margin-bottom:14px;}
.news-card h3{font-size:16.5px;line-height:1.6;margin-bottom:10px;}
.news-card:hover h3{color:var(--brand);}
.news-card p{font-size:14px;color:var(--ink-2);line-height:1.8;flex:1;}
.news-foot{margin-top:18px;padding-top:14px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--ink-3);}
.news-foot i{color:var(--brand);}

/* ===== 页脚 ===== */
.site-footer{background:#EDF2FA;border-top:1px solid var(--line);padding:64px 0 26px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:32px;}
.footer-title{font-size:15px;margin-bottom:16px;color:var(--ink);}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand p{font-size:14px;color:var(--ink-2);line-height:1.9;max-width:360px;}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a{font-size:14.5px;color:var(--ink-2);}
.footer-links a:hover{color:var(--brand);}
.footer-info{display:flex;flex-direction:column;gap:12px;font-size:14px;color:var(--ink-2);}
.footer-info span{display:flex;align-items:flex-start;gap:9px;line-height:1.7;}
.footer-info i{color:var(--brand);margin-top:4px;}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid #DCE5F3;
  display:flex;flex-wrap:wrap;gap:10px 20px;justify-content:space-between;
  font-size:13px;color:var(--ink-3);
}

/* ===== 移动端底部 Tab ===== */
.mobile-tab{
  position:fixed;left:0;right:0;bottom:0;z-index:60;display:none;
  background:rgba(255,255,255,.98);border-top:1px solid var(--line);
  padding:7px 4px calc(7px + env(safe-area-inset-bottom));
  box-shadow:0 -6px 20px rgba(20,58,120,.07);
}
.mobile-tab a{
  flex:1;display:flex;flex-direction:column;align-items:center;gap:3px;
  font-size:11px;color:var(--ink-3);padding:3px 0;text-decoration:none;
}
.mobile-tab a i{font-size:19px;line-height:1;}
.mobile-tab a.active{color:var(--brand);font-weight:600;}
.mobile-tab a:hover{text-decoration:none;}

/* ===== 响应式 ===== */
@media (max-width:1199px){
  .footer-grid{grid-template-columns:1.5fr 1fr 1fr;gap:28px;}
  .footer-brand{grid-column:1 / -1;}
}
@media (max-width:991px){
  .nav-menu{display:none;}
  .qa-layout{grid-template-columns:minmax(0,1fr);gap:0;}
  .qa-index{
    position:static;display:flex;gap:8px;overflow-x:auto;padding:10px;
    border-radius:var(--r-pill);margin-bottom:30px;box-shadow:var(--sh);
    scrollbar-width:none;
  }
  .qa-index::-webkit-scrollbar{display:none;}
  .qa-index-title{display:none;}
  .qa-index a{
    white-space:nowrap;border-left:0;border:1px solid var(--line);
    border-radius:var(--r-pill);padding:7px 15px;font-size:14px;
  }
  .qa-index a.is-active{border-color:var(--brand);background:var(--brand-soft);}
  .help-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .news-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .promise-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px 24px;}
}
@media (max-width:767px){
  :root{--sec:var(--sec-sm);}
  .section{padding:var(--sec-sm) 0;}
  .qa-section{padding:44px 0 56px;}
  .hero-inner{padding:48px 0 42px;}
  .qa-group{margin-bottom:48px;}
  .qa-group-title::before{height:18px;}
  .qa-item{padding:20px 18px;}
  .qa-item:hover{transform:none;}
  .qa-sub{padding:16px;margin-top:16px;}
  .help-grid{grid-template-columns:minmax(0,1fr);}
  .news-grid{grid-template-columns:minmax(0,1fr);}
  .promise-grid{grid-template-columns:minmax(0,1fr);gap:26px;}
  .cta-band{padding:56px 0;}
  .cta-actions .btn-main,.cta-actions .btn-line{width:100%;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px 20px;}
  .footer-brand{grid-column:1 / -1;}
  .footer-bottom{flex-direction:column;gap:8px;}
  body{padding-bottom:78px;}
  .mobile-tab{display:flex;}
  .qa-intro{padding:20px 18px;flex-direction:column;gap:10px;}
}
@media (max-width:520px){
  .nav-inner{height:62px;gap:12px;}
  .logo{font-size:16px;}
  .logo-mark{width:30px;height:30px;font-size:13px;}
  .nav-cta .btn-main{padding:8px 14px;font-size:13px;}
  .qa-index a{font-size:13.5px;padding:6px 13px;}
  .qa-q{font-size:16.5px;}
  .qa-a{font-size:15px;}
}