/* roulang page: index */
:root{
  --c-primary:#1D5BD6;
  --c-primary-dark:#16479F;
  --c-primary-tint:#EAF1FE;
  --c-primary-ultra:#F4F8FF;
  --c-amber:#F5A623;
  --c-amber-tint:#FFF6E6;
  --c-mint:#12A594;
  --c-mint-tint:#E7F6F3;
  --t-main:#101B2D;
  --t-sub:#46536B;
  --t-weak:#7A879E;
  --bg:#F6F9FD;
  --card:#FFFFFF;
  --line:#E4EBF6;
  --border:#D8E4F6;
  --r-btn:10px;
  --r-sm:8px;
  --r-card:16px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-sm:0 1px 2px rgba(14,27,46,.06);
  --sh-md:0 8px 24px rgba(20,50,100,.08);
  --sh-lg:0 18px 48px rgba(20,50,100,.12);
  --ease:180ms ease;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  padding:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--t-main);
  background:var(--bg);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;background:transparent;}
a:hover{color:inherit;}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
ul,ol{margin:0;padding:0;}
h1,h2,h3,h4,h5,p{margin:0;}
:focus-visible{outline:3px solid rgba(29,91,214,.25);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
@media (max-width:640px){.container{padding:0 16px;}}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:90;
  padding:12px 0 0;
  background:linear-gradient(180deg,#F6F9FD 0%,#F6F9FD 62%,rgba(246,249,253,0) 100%);
}
.nav-shell{
  display:flex;
  align-items:center;
  gap:16px;
  height:72px;
  padding:0 20px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-md);
}
.nav-logo{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:38px;height:38px;
  border-radius:11px;
  background:linear-gradient(135deg,#1D5BD6 0%,#3E7BF0 100%);
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-size:15px;font-weight:700;letter-spacing:0;
  box-shadow:0 6px 14px rgba(29,91,214,.26);
}
.logo-text{font-size:18px;font-weight:600;color:var(--t-main);white-space:nowrap;}
.nav-links{flex:1;display:flex;align-items:center;justify-content:center;gap:6px;}
.nav-link{
  display:inline-flex;align-items:center;gap:8px;
  height:40px;padding:0 14px;
  border-radius:var(--r-btn);
  color:var(--t-sub);
  font-size:15px;font-weight:500;
  transition:background var(--ease),color var(--ease),transform var(--ease);
  white-space:nowrap;
}
.nav-link i{font-size:14px;opacity:.85;}
.nav-link:hover{background:var(--c-primary-tint);color:var(--c-primary);transform:translateY(-1px);}
.nav-link.active{background:var(--c-primary-tint);color:var(--c-primary);font-weight:600;}
.nav-link.active i{opacity:1;}
.nav-right{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--border);
  border-radius:var(--r-btn);
  background:#fff;color:var(--t-main);
  cursor:pointer;
  align-items:center;justify-content:center;
  transition:border-color var(--ease),color var(--ease);
}
.nav-toggle:hover{border-color:var(--c-primary);color:var(--c-primary);}
.mobile-drawer{
  display:none;
  margin-top:10px;
  padding:14px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-lg);
}
.mobile-drawer.open{display:block;}
.drawer-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin-bottom:12px;}
.drawer-item{
  display:flex;align-items:center;gap:8px;
  min-height:48px;padding:0 14px;
  background:var(--c-primary-ultra);
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  font-size:15px;font-weight:500;color:var(--t-sub);
}
.drawer-item.active{background:var(--c-primary-tint);color:var(--c-primary);font-weight:600;border-color:#CFE0FA;}
@media (max-width:1023px){
  .nav-links{display:none;}
  .nav-right .nav-cta{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-shell{justify-content:space-between;}
}
@media (min-width:1024px){.mobile-drawer{display:none !important;}}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-size:15px;font-weight:600;
  cursor:pointer;
  transition:background var(--ease),color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 4px 12px rgba(29,91,214,.22);}
.btn-primary:hover{background:var(--c-primary-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-md);}
.btn-primary:active{transform:translateY(0);}
.btn-secondary{background:#fff;color:var(--t-main);border-color:#CBD9EE;}
.btn-secondary:hover{border-color:var(--c-primary);color:var(--c-primary);transform:translateY(-1px);}
.btn-sm{height:42px;padding:0 20px;font-size:14px;}
.btn-lg{height:52px;padding:0 34px;font-size:16px;}
.btn-block{width:100%;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--c-primary);
  transition:gap var(--ease),color var(--ease);
}
.link-arrow:hover{gap:10px;color:var(--c-primary-dark);}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0;}
.section-tight{padding:56px 0;}
@media (max-width:1023px){.section{padding:64px 0;}.section-tight{padding:44px 0;}}
@media (max-width:639px){.section{padding:48px 0;}.section-tight{padding:36px 0;}}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
  margin-bottom:36px;
}
.section-head-inner{max-width:720px;}
.section-title{font-size:30px;line-height:1.3;font-weight:700;color:var(--t-main);}
.section-title small{display:block;font-size:14px;font-weight:500;color:var(--c-primary);margin-bottom:8px;}
.section-desc{margin-top:10px;font-size:16px;color:var(--t-sub);}
@media (max-width:639px){
  .section-title{font-size:22px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;}
}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 12px;
  border-radius:var(--r-pill);
  font-size:12px;font-weight:600;line-height:1;
}
.badge-blue{background:var(--c-primary-tint);color:var(--c-primary);}
.badge-amber{background:var(--c-amber-tint);color:#B7760A;}
.badge-mint{background:var(--c-mint-tint);color:var(--c-mint);}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  padding:56px 0 24px;
  background:
    radial-gradient(circle at 8% 12%,#EAF1FE 0%,rgba(234,241,254,0) 52%),
    radial-gradient(circle at 92% 0%,#FFF6E6 0%,rgba(255,246,230,0) 46%);
}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;}
.hero-badge{margin-bottom:20px;}
.hero h1{
  font-size:48px;line-height:1.25;font-weight:700;color:var(--t-main);
  margin-bottom:18px;
}
.hero h1 .hl{color:var(--c-primary);}
.hero-sub{font-size:17px;line-height:1.8;color:var(--t-sub);max-width:560px;margin-bottom:28px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}
.trust-list{display:flex;flex-wrap:wrap;gap:26px;margin-top:34px;}
.trust-item{display:flex;align-items:center;gap:9px;font-size:14px;color:var(--t-sub);}
.trust-item i{color:var(--c-mint);font-size:15px;}
.hero-visual{position:relative;}
.hero-visual img{
  width:100%;
  aspect-ratio:16/11;
  object-fit:cover;
  border-radius:var(--r-lg);
  box-shadow:var(--sh-lg);
}
.hero-float{
  position:absolute;right:-10px;bottom:-22px;
  width:228px;padding:14px 16px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:12px;
  box-shadow:var(--sh-lg);
}
.hero-float .hf-top{display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--t-sub);}
.hero-float .hf-val{font-size:18px;font-weight:600;color:var(--c-primary);}
.mini-track{height:8px;border-radius:var(--r-pill);background:var(--c-primary-tint);overflow:hidden;margin-top:10px;}
.mini-fill{height:100%;width:64%;border-radius:var(--r-pill);background:linear-gradient(90deg,var(--c-primary),var(--c-mint));}
@media (max-width:1023px){
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero h1{font-size:38px;}
  .hero-visual{max-width:620px;}
}
@media (max-width:639px){
  .hero{padding:36px 0 12px;}
  .hero h1{font-size:28px;}
  .hero-sub{font-size:15.5px;}
  .hero-float{position:static;width:100%;margin-top:16px;}
  .hero-visual img{aspect-ratio:16/10;}
}

/* ---------- 步骤条 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.step{
  position:relative;
  padding:24px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-sm);
  transition:box-shadow var(--ease),transform var(--ease);
}
.step:hover{box-shadow:var(--sh-md);transform:translateY(-2px);}
.step-num{
  width:34px;height:34px;border-radius:var(--r-pill);
  background:var(--c-primary);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:600;margin-bottom:16px;
}
.step h3{font-size:18px;font-weight:600;margin-bottom:8px;color:var(--t-main);}
.step p{font-size:14px;line-height:1.75;color:var(--t-sub);}
.step::after{
  content:"";position:absolute;top:41px;right:-24px;width:24px;
  border-top:2px dashed var(--border);
}
.step:last-child::after{display:none;}
@media (max-width:1023px){
  .steps{grid-template-columns:repeat(2,1fr);}
  .step:nth-child(2)::after{display:none;}
  .step:nth-child(1)::after,.step:nth-child(3)::after{top:41px;}
}
@media (max-width:639px){
  .steps{grid-template-columns:1fr;gap:16px;}
  .step::after{display:none;}
}

/* ---------- 奖励预览 ---------- */
.reward-grid{display:grid;grid-template-columns:1.08fr 1.08fr 1.08fr .9fr;gap:24px;}
.reward-card{
  display:flex;flex-direction:column;
  background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--sh-md);
  transition:box-shadow var(--ease),transform var(--ease);
}
.reward-card:hover{box-shadow:var(--sh-lg);transform:translateY(-2px);}
.reward-thumb{width:100%;aspect-ratio:16/9;object-fit:cover;}
.reward-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.reward-body h3{font-size:18px;font-weight:600;color:var(--t-main);}
.reward-body p{font-size:14px;line-height:1.75;color:var(--t-sub);}
.reward-foot{margin-top:auto;padding-top:10px;}
.reward-more{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;
  padding:24px;text-align:center;
  border:2px dashed var(--border);border-radius:var(--r-card);
  background:rgba(255,255,255,.55);
  color:var(--t-weak);font-size:14px;
}
.reward-more i{font-size:22px;color:var(--c-primary);opacity:.75;}
@media (max-width:1023px){
  .reward-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:639px){
  .reward-grid{grid-template-columns:1fr;gap:16px;}
}

/* ---------- 进度面板 ---------- */
.progress-panel{
  background:#fff;border:1px solid var(--line);
  border-radius:var(--r-lg);padding:32px;
  box-shadow:var(--sh-md);
}
.progress-top{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:18px;}
.progress-top h3{font-size:20px;font-weight:600;color:var(--t-main);}
.progress-top span.hint{display:block;font-size:14px;color:var(--t-sub);font-weight:400;margin-top:6px;}
.progress-num{font-size:28px;font-weight:600;color:var(--c-primary);line-height:1.1;}
.progress-track{height:10px;border-radius:var(--r-pill);background:var(--c-primary-tint);overflow:hidden;}
.progress-fill{height:100%;width:72%;border-radius:var(--r-pill);background:linear-gradient(90deg,var(--c-primary) 0%,var(--c-mint) 100%);}
.milestones{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:26px;}
.milestone{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--t-sub);line-height:1.6;}
.dot{
  flex-shrink:0;width:20px;height:20px;margin-top:3px;
  border-radius:var(--r-pill);border:2px solid #CBD9EE;background:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:10px;color:#fff;
}
.dot.done{background:var(--c-mint);border-color:var(--c-mint);}
@media (max-width:1023px){
  .milestones{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:639px){
  .progress-panel{padding:20px;}
  .progress-top{flex-direction:column;align-items:flex-start;}
  .milestones{grid-template-columns:1fr;}
}

/* ---------- CTA 卡 ---------- */
.cta-card{
  display:grid;grid-template-columns:1.45fr .85fr;gap:32px;align-items:center;
  padding:44px;
  background:linear-gradient(120deg,#EAF1FE 0%,#FFFFFF 72%);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-md);
}
.cta-card h2{font-size:28px;line-height:1.35;font-weight:700;margin-bottom:12px;}
.cta-card p{font-size:16px;color:var(--t-sub);margin-bottom:24px;max-width:560px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}
.cta-visual img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--r-card);
  box-shadow:var(--sh-lg);
}
@media (max-width:1023px){
  .cta-card{grid-template-columns:1fr;padding:32px;}
  .cta-card h2{font-size:24px;}
}
@media (max-width:639px){
  .cta-card{padding:24px;gap:24px;}
}

/* ---------- 资讯列表 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.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-md);
  transition:box-shadow var(--ease),transform var(--ease);
}
.news-card:hover{box-shadow:var(--sh-lg);transform:translateY(-2px);}
.news-thumb{display:block;overflow:hidden;background:var(--c-primary-tint);}
.news-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform 320ms ease;}
.news-card:hover .news-thumb img{transform:scale(1.03);}
.news-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.news-title{
  font-size:17px;font-weight:600;line-height:1.5;color:var(--t-main);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-title a:hover{color:var(--c-primary);}
.news-excerpt{
  font-size:14px;line-height:1.7;color:var(--t-sub);
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.news-foot{
  margin-top:auto;padding-top:12px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:12px;color:var(--t-weak);
}
.news-foot i{color:var(--c-primary);}
.empty-state{
  padding:48px 24px;text-align:center;
  background:var(--c-primary-ultra);
  border:1px dashed var(--border);
  border-radius:var(--r-card);
  color:var(--t-weak);font-size:15px;
}
.empty-state i{display:block;font-size:26px;color:var(--c-primary);opacity:.7;margin-bottom:12px;}
@media (max-width:1023px){.news-grid{grid-template-columns:repeat(2,1fr);}}
@media (max-width:639px){.news-grid{grid-template-columns:1fr;gap:16px;}}

/* ---------- FAQ ---------- */
ul.accordion{list-style:none;margin:0;padding:0;border:none;background:transparent;}
.accordion-item{
  margin-bottom:12px;
  border:1px solid var(--line);
  border-radius:12px;
  background:#fff;
  box-shadow:var(--sh-sm);
  overflow:hidden;
}
.accordion-title{
  position:relative;
  display:block;
  padding:20px 56px 20px 20px;
  background:#fff;
  border:none;
  font-size:16px;font-weight:600;color:var(--t-main);
  transition:background var(--ease),color var(--ease);
}
.accordion-title:hover{background:var(--c-primary-ultra);color:var(--c-primary);}
.accordion-title::before{
  content:"+";
  position:absolute;right:20px;left:auto;top:50%;transform:translateY(-50%);
  color:var(--c-primary);font-size:18px;font-weight:600;line-height:1;
}
.accordion-item.is-active .accordion-title{background:var(--c-primary-ultra);color:var(--c-primary);}
.accordion-item.is-active .accordion-title::before{content:"−";}
.accordion-content{
  padding:0 20px 20px !important;
  background:#F6F9FD !important;
  border:none !important;
  color:var(--t-sub);
  font-size:15px;line-height:1.9;
}

/* ---------- 页脚 ---------- */
.site-footer{margin-top:88px;background:#101B2D;color:#C6D2E4;padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:32px;padding-bottom:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .logo-text{color:#fff;}
.footer-desc{font-size:14px;line-height:1.85;color:#9FB0C8;max-width:320px;margin-bottom:18px;}
.footer-contact{font-size:14px;color:#9FB0C8;display:flex;flex-direction:column;gap:8px;}
.footer-contact span{display:flex;align-items:center;gap:8px;}
.footer-contact i{color:var(--c-mint);}
.footer-title{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;}
.footer-list{display:flex;flex-direction:column;gap:10px;font-size:14px;}
.footer-list a{color:#C6D2E4;transition:color var(--ease);}
.footer-list a:hover{color:#fff;}
.footer-bottom{
  border-top:1px solid rgba(198,210,228,.18);
  padding:20px 0;
  display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:12px;color:#8B9AB3;
}
@media (max-width:1023px){
  .footer-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:639px){
  .site-footer{margin-top:56px;padding-top:44px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
}

/* ---------- Foundation 覆盖 ---------- */
.button,button.button{background:var(--c-primary);border-radius:var(--r-btn);}
.grid-margin-x{margin-left:-12px;margin-right:-12px;}
.grid-margin-x>.cell{padding-left:12px;padding-right:12px;}
.reveal{border-radius:var(--r-card);}

/* roulang page: article */
:root{
  --c-primary:#1D5BD6;
  --c-primary-dark:#16479F;
  --c-primary-tint:#EAF1FE;
  --c-primary-xlight:#F4F8FF;
  --c-amber:#F5A623;
  --c-amber-tint:#FFF6E6;
  --c-mint:#12A594;
  --c-mint-tint:#E7F6F3;
  --c-text:#101B2D;
  --c-text-2:#46536B;
  --c-text-3:#7A879E;
  --c-bg:#F6F9FD;
  --c-card:#FFFFFF;
  --c-line:#E4EBF6;
  --c-border:#D8E4F6;
  --footer-bg:#101B2D;
  --footer-text:#C6D2E4;
  --r-sm:8px;
  --r-btn:10px;
  --r-card:16px;
  --r-lg:20px;
  --sh-sm:0 1px 2px rgba(14,27,46,.06);
  --sh-md:0 8px 24px rgba(20,50,100,.08);
  --sh-lg:0 18px 48px rgba(20,50,100,.12);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--c-primary);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--c-primary-dark);}
button{font-family:inherit;cursor:pointer;}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--c-text);}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(29,91,214,.25);border-radius:var(--r-sm);}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:12px;
  z-index:60;
  padding:0;
}
.nav-shell{
  display:flex;
  align-items:center;
  gap:20px;
  height:72px;
  padding:0 20px;
  background:var(--c-card);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-md);
}
.nav-logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-mark{
  width:38px;height:38px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:12px;
  background:linear-gradient(135deg,var(--c-primary) 0%,#2F74E8 100%);
  color:#fff;font-size:15px;font-weight:700;
  box-shadow:0 6px 16px rgba(29,91,214,.28);
}
.logo-text{font-size:18px;font-weight:600;color:var(--c-text);}
.nav-links{display:flex;align-items:center;gap:8px;flex:1 1 auto;}
.nav-link{
  display:inline-flex;align-items:center;gap:7px;
  height:40px;padding:0 15px;
  border-radius:var(--r-btn);
  font-size:15px;color:var(--c-text-2);
  transition:background .18s ease,color .18s ease,transform .18s ease;
}
.nav-link i{font-size:14px;color:var(--c-text-3);transition:color .18s ease;}
.nav-link:hover{background:var(--c-primary-tint);color:var(--c-primary);transform:translateY(-1px);}
.nav-link:hover i{color:var(--c-primary);}
.nav-link.active{background:var(--c-primary-tint);color:var(--c-primary);font-weight:600;}
.nav-link.active i{color:var(--c-primary);}
.nav-right{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:var(--r-btn);
  border:1px solid var(--c-border);
  background:#fff;color:var(--c-text-2);
  font-size:17px;
}
.nav-toggle:hover{border-color:var(--c-primary);color:var(--c-primary);}
.mobile-drawer{
  display:none;
  margin-top:10px;
  padding:16px;
  background:var(--c-card);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-md);
}
.mobile-drawer.open{display:block;}
.drawer-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:12px;}
.drawer-item{
  display:flex;align-items:center;gap:8px;
  min-height:48px;padding:0 14px;
  border-radius:var(--r-btn);
  background:var(--c-primary-xlight);
  border:1px solid var(--c-line);
  color:var(--c-text-2);font-size:15px;
}
.drawer-item i{color:var(--c-primary);}
.drawer-item.active{background:var(--c-primary-tint);color:var(--c-primary);font-weight:600;}
/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-size:16px;font-weight:600;
  transition:all .18s ease;
  white-space:nowrap;
}
.btn-sm{height:40px;padding:0 18px;font-size:15px;border-radius:var(--r-btn);}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 6px 18px rgba(29,91,214,.22);}
.btn-primary:hover{background:var(--c-primary-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-md);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:#fff;color:var(--c-text);border-color:#CBD9EE;}
.btn-ghost:hover{border-color:var(--c-primary);color:var(--c-primary);transform:translateY(-1px);}
.btn-block{width:100%;}
/* ---------- 阅读进度条 ---------- */
.read-progress{
  position:sticky;
  top:0;
  z-index:70;
  height:3px;
  background:transparent;
  margin-top:14px;
}
.read-progress span{
  display:block;height:3px;width:0;
  border-radius:999px;
  background:linear-gradient(90deg,var(--c-primary) 0%,var(--c-mint) 100%);
  transition:width .1s linear;
}
/* ---------- 面包屑 ---------- */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:14px;color:var(--c-text-3);
  padding:26px 0 0;
}
.breadcrumb a{color:var(--c-text-3);}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb .sep{color:#B6C2D6;}
.breadcrumb .current{color:var(--c-primary);font-weight:600;}
/* ---------- 文章头部 ---------- */
.article-head{
  padding:22px 0 34px;
  border-bottom:1px solid var(--c-line);
}
.article-head .badge{margin-bottom:16px;}
.article-head h1{
  font-size:44px;
  line-height:1.25;
  letter-spacing:0;
  margin-bottom:18px;
  max-width:20em;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:22px;
  font-size:14px;color:var(--c-text-3);
}
.article-meta span{display:inline-flex;align-items:center;gap:7px;}
.article-meta i{color:var(--c-text-3);font-size:13px;}
.article-share{margin-left:auto;display:flex;align-items:center;gap:10px;}
.share-btn{
  width:40px;height:40px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:var(--r-btn);
  border:1px solid var(--c-border);
  background:#fff;color:var(--c-text-2);font-size:15px;
  transition:all .18s ease;
}
.share-btn:hover{border-color:var(--c-primary);color:var(--c-primary);transform:translateY(-1px);box-shadow:var(--sh-sm);}
/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 13px;
  border-radius:999px;
  font-size:12px;
  font-weight:600;
  line-height:1.6;
}
.badge-blue{background:var(--c-primary-tint);color:var(--c-primary);}
.badge-amber{background:var(--c-amber-tint);color:#B5750F;}
.badge-mint{background:var(--c-mint-tint);color:#0B7C70;}
/* ---------- 正文 ---------- */
.article-main{padding:48px 0 0;}
.article-content{
  width:100%;
  max-width:820px;
  margin:0 auto;
  padding:40px 44px 48px;
  background:var(--c-card);
  border:1px solid var(--c-line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-md);
  font-size:17px;
  line-height:1.9;
  color:var(--c-text-2);
}
.article-content p{margin:0 0 20px;}
.article-content h2{
  position:relative;
  font-size:26px;
  line-height:1.35;
  color:var(--c-text);
  margin:40px 0 14px;
  padding-left:16px;
}
.article-content h2::before{
  content:"";
  position:absolute;left:0;top:6px;
  width:4px;height:18px;
  border-radius:2px;
  background:var(--c-primary);
}
.article-content h3{
  font-size:20px;line-height:1.4;font-weight:600;
  color:var(--c-text);
  margin:30px 0 12px;
}
.article-content h4{
  font-size:17px;line-height:1.5;font-weight:600;
  color:var(--c-text);
  margin:24px 0 10px;
}
.article-content ul,.article-content ol{margin:0 0 20px;padding-left:0;}
.article-content ul li,.article-content ol li{
  position:relative;
  padding-left:22px;
  margin-bottom:10px;
  line-height:1.9;
}
.article-content ul li::before{
  content:"";
  position:absolute;left:2px;top:11px;
  width:7px;height:7px;
  border-radius:2px;
  background:var(--c-primary);
}
.article-content ol{counter-reset:od;}
.article-content ol li{counter-increment:od;}
.article-content ol li::before{
  content:counter(od);
  position:absolute;left:0;top:2px;
  font-size:13px;font-weight:700;color:var(--c-primary);
}
.article-content blockquote{
  margin:24px 0;
  padding:18px 22px;
  background:var(--c-primary-xlight);
  border-left:4px solid var(--c-primary);
  border-radius:0 12px 12px 0;
  color:var(--c-text-2);
  font-size:16px;
}
.article-content blockquote p:last-child{margin-bottom:0;}
.article-content img{
  border-radius:12px;
  margin:24px auto;
  width:100%;
  object-fit:cover;
}
.article-content figure{margin:24px 0;}
.article-content figcaption{
  text-align:center;
  font-size:13px;
  color:var(--c-text-3);
  margin-top:10px;
}
.article-content a{color:var(--c-primary);border-bottom:1px solid rgba(29,91,214,.3);}
.article-content a:hover{border-bottom-color:var(--c-primary);}
.article-content table{
  width:100%;
  border-collapse:collapse;
  font-size:15px;
  margin:24px 0;
}
.article-content th,.article-content td{
  padding:12px 14px;
  border-bottom:1px solid var(--c-line);
  text-align:left;
}
.article-content th{background:var(--c-primary-xlight);color:var(--c-text);font-weight:600;}
.article-content code{
  background:var(--c-primary-xlight);
  color:var(--c-primary-dark);
  padding:2px 7px;
  border-radius:6px;
  font-size:15px;
}
/* ---------- 空态 ---------- */
.empty-state{
  text-align:center;
  padding:52px 24px;
  background:var(--c-primary-xlight);
  border:1px dashed var(--c-border);
  border-radius:var(--r-card);
}
.empty-state i{font-size:34px;color:var(--c-primary);}
.empty-state h2{font-size:22px;margin:16px 0 10px;padding:0;}
.empty-state h2::before{display:none;}
.empty-state p{margin-bottom:22px;color:var(--c-text-2);font-size:15px;}
/* ---------- 相关推荐 ---------- */
.section{padding:88px 0 0;}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:20px;
  margin-bottom:32px;
}
.section-head h2{font-size:30px;line-height:1.3;}
.section-head p{margin-top:8px;font-size:15px;color:var(--c-text-3);}
.link-more{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:600;color:var(--c-primary);
}
.link-more:hover{gap:10px;}
.card-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.info-card{
  display:flex;flex-direction:column;
  background:var(--c-card);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-md);
  transition:box-shadow .18s ease,transform .18s ease;
}
.info-card:hover{box-shadow:var(--sh-lg);transform:translateY(-2px);}
.info-card .thumb{
  aspect-ratio:16/9;
  overflow:hidden;
  background:var(--c-primary-tint);
}
.info-card .thumb img{width:100%;height:100%;object-fit:cover;}
.info-card .body{padding:20px;display:flex;flex-direction:column;flex:1 1 auto;}
.info-card .body .badge{align-self:flex-start;margin-bottom:12px;}
.info-card h3{
  font-size:18px;line-height:1.5;font-weight:600;
  margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.info-card h3 a{color:var(--c-text);}
.info-card h3 a:hover{color:var(--c-primary);}
.info-card p{
  font-size:14.5px;color:var(--c-text-2);line-height:1.8;
  margin-bottom:16px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.info-card .foot{
  margin-top:auto;
  display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--c-text-3);
  padding-top:14px;border-top:1px solid var(--c-line);
}
.info-card .foot i{color:var(--c-primary);}
/* ---------- CTA ---------- */
.cta-card{
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  padding:40px 44px;
  background:linear-gradient(120deg,var(--c-primary-tint) 0%,#FFFFFF 72%);
  border:1px solid var(--c-border);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-md);
}
.cta-card h2{font-size:26px;line-height:1.35;margin-bottom:10px;}
.cta-card p{font-size:15px;color:var(--c-text-2);max-width:52em;}
.cta-actions{display:flex;gap:12px;flex:0 0 auto;}
/* ---------- 返回入口 ---------- */
.post-nav{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  margin-top:32px;
  padding:22px 26px;
  background:var(--c-card);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-sm);
}
.post-nav .back{font-size:15px;font-weight:600;display:inline-flex;align-items:center;gap:8px;}
.post-nav .pager{display:flex;gap:14px;font-size:14px;color:var(--c-text-3);}
.post-nav .pager a{color:var(--c-text-2);}
.post-nav .pager a:hover{color:var(--c-primary);}
/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:88px;
  background:var(--footer-bg);
  color:var(--footer-text);
  padding:64px 0 28px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:32px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .logo-text{color:#fff;font-size:18px;}
.footer-desc{font-size:14px;line-height:1.8;color:var(--footer-text);max-width:30em;}
.footer-contact{margin-top:18px;display:flex;flex-direction:column;gap:8px;font-size:13.5px;color:var(--footer-text);}
.footer-contact i{color:#7FA3E8;margin-right:6px;}
.footer-title{font-size:15px;color:#fff;font-weight:600;margin-bottom:16px;}
.footer-list{display:flex;flex-direction:column;gap:11px;}
.footer-list a{font-size:14px;color:var(--footer-text);}
.footer-list a:hover{color:#fff;}
.footer-bottom{
  margin-top:44px;padding-top:20px;
  border-top:1px solid rgba(198,210,228,.18);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12px;color:#93A3BC;
}
/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .article-head h1{font-size:38px;}
}
@media (max-width:1023px){
  .nav-links{display:none;}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;}
  .nav-cta{display:none;}
  .nav-shell{height:64px;padding:0 16px;}
  .article-head h1{font-size:32px;}
  .article-content{padding:32px 28px 36px;}
  .article-content h2{font-size:23px;}
  .section{padding-top:64px;}
  .section-head h2{font-size:25px;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
  .cta-card{flex-direction:column;align-items:flex-start;padding:32px 28px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
  .site-footer{margin-top:64px;}
}
@media (max-width:639px){
  .container{padding:0 16px;}
  .site-header{top:8px;}
  .article-head{padding:18px 0 26px;}
  .article-head h1{font-size:26px;}
  .breadcrumb{font-size:13px;padding-top:18px;}
  .article-meta{gap:14px;font-size:13px;}
  .article-share{margin-left:0;width:100%;}
  .article-content{
    padding:24px 20px 28px;
    font-size:16px;
    line-height:1.85;
    border-radius:var(--r-card);
  }
  .article-content h2{font-size:21px;margin-top:32px;}
  .article-content h3{font-size:18px;}
  .section{padding-top:48px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:10px;}
  .section-head h2{font-size:22px;}
  .card-grid{grid-template-columns:1fr;gap:16px;}
  .post-nav{flex-direction:column;align-items:flex-start;}
  .cta-card{padding:26px 20px;}
  .cta-card h2{font-size:22px;}
  .cta-actions{flex-direction:column;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .site-footer{padding:48px 0 24px;margin-top:48px;}
  .footer-bottom{flex-direction:column;}
}

/* roulang page: category1 */
:root{
  --primary:#1D5BD6;
  --primary-dark:#16479F;
  --primary-tint:#EAF1FE;
  --primary-xlight:#F4F8FF;
  --amber:#F5A623;
  --amber-tint:#FFF6E6;
  --mint:#12A594;
  --mint-tint:#E7F6F3;
  --text:#101B2D;
  --text-2:#46536B;
  --text-3:#7A879E;
  --bg:#F6F9FD;
  --card:#FFFFFF;
  --line:#E4EBF6;
  --border:#D8E4F6;
  --footer-bg:#101B2D;
  --footer-text:#C6D2E4;
  --radius-btn:10px;
  --radius-sm:8px;
  --radius-card:16px;
  --radius-lg:20px;
  --shadow-sm:0 1px 2px rgba(14,27,46,.06);
  --shadow-md:0 8px 24px rgba(20,50,100,.08);
  --shadow-lg:0 18px 48px rgba(20,50,100,.12);
  --space-section:88px;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul{padding:0;list-style:none;}
h1{font-size:40px;line-height:1.25;font-weight:700;}
h2{font-size:30px;line-height:1.3;font-weight:700;}
h3{font-size:20px;line-height:1.4;font-weight:600;}
h4{font-size:17px;line-height:1.5;font-weight:600;}
::selection{background:var(--primary-tint);color:var(--primary-dark);}
:focus-visible{outline:3px solid rgba(29,91,214,.25);outline-offset:2px;border-radius:6px;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
.section{padding:var(--space-section) 0;}
.section-tight{padding:56px 0;}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head h2{margin-bottom:12px;}
.section-head p{color:var(--text-2);font-size:16px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.02em;
  color:var(--primary);background:var(--primary-tint);
  border-radius:999px;padding:6px 14px;margin-bottom:16px;
}

/* ---------- 按钮体系 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
  cursor:pointer;transition:background .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease,transform .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 8px 20px rgba(29,91,214,.22);}
.btn-primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-1px);box-shadow:0 12px 28px rgba(29,91,214,.28);}
.btn-ghost{background:#fff;border-color:#CBD9EE;color:var(--text);}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-1px);}
.btn-line{background:transparent;color:var(--primary);padding:0 4px;height:auto;font-weight:600;}
.btn-line i{transition:transform .18s ease;}
.btn-line:hover i{transform:translateX(4px);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-lg{height:52px;padding:0 32px;font-size:16px;}
.btn-block{width:100%;}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:60;padding:12px 0;}
.nav-shell{
  display:flex;align-items:center;gap:20px;
  height:72px;padding:0 20px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-md);
}
.nav-logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:38px;height:38px;border-radius:11px;
  background:linear-gradient(135deg,var(--primary),#3D7BEE);
  color:#fff;font-size:14px;font-weight:700;letter-spacing:.02em;
  display:inline-flex;align-items:center;justify-content:center;
  box-shadow:0 6px 14px rgba(29,91,214,.28);
}
.logo-text{font-size:18px;font-weight:600;color:var(--text);}
.nav-links{display:flex;align-items:center;gap:6px;flex:1;justify-content:center;}
.nav-link{
  display:inline-flex;align-items:center;gap:8px;
  height:40px;padding:0 14px;border-radius:var(--radius-btn);
  font-size:14.5px;font-weight:600;color:var(--text-2);
  transition:background .18s ease,color .18s ease,transform .18s ease;
}
.nav-link i{font-size:14px;opacity:.85;}
.nav-link:hover{background:var(--primary-tint);color:var(--primary);transform:translateY(-1px);}
.nav-link.active{background:var(--primary-tint);color:var(--primary);}
.nav-right{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--radius-btn);
  background:var(--primary-xlight);border:1px solid var(--border);color:var(--primary);
  font-size:17px;cursor:pointer;align-items:center;justify-content:center;
  transition:background .18s ease,transform .18s ease;
}
.nav-toggle:hover{background:var(--primary-tint);transform:translateY(-1px);}
.mobile-drawer{display:none;margin-top:12px;padding:16px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-md);}
.mobile-drawer.open{display:block;}
.drawer-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:14px;}
.drawer-item{
  display:flex;align-items:center;gap:8px;min-height:48px;padding:0 14px;
  border-radius:var(--radius-btn);background:var(--primary-xlight);
  font-size:14.5px;font-weight:600;color:var(--text-2);
}
.drawer-item i{color:var(--primary);}
.drawer-item.active{background:var(--primary-tint);color:var(--primary);}

/* ---------- 面包屑 ---------- */
.breadcrumb{padding:28px 0 0;font-size:14px;color:var(--text-3);}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.breadcrumb li{display:inline-flex;align-items:center;gap:8px;}
.breadcrumb li+li::before{content:"/";color:var(--border);}
.breadcrumb a{color:var(--text-3);transition:color .18s ease;}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .current{color:var(--primary);font-weight:600;}

/* ---------- 分类小 Hero ---------- */
.cat-hero{padding:40px 0 8px;}
.cat-hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center;}
.cat-hero h1{margin-bottom:18px;}
.cat-hero h1 .hl{color:var(--primary);}
.cat-hero .lead{font-size:17px;line-height:1.85;color:var(--text-2);max-width:600px;}
.cat-hero-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}
.cat-hero-media{position:relative;}
.cat-hero-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius-lg);
  box-shadow:var(--shadow-lg);
}
.media-chip{
  position:absolute;right:-10px;bottom:-14px;
  display:flex;align-items:center;gap:10px;
  padding:12px 16px;background:#fff;border:1px solid var(--line);
  border-radius:12px;box-shadow:var(--shadow-md);font-size:13px;font-weight:600;color:var(--text-2);
}
.media-chip i{color:var(--mint);font-size:16px;}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;line-height:1;
  padding:7px 12px;border-radius:999px;
}
.badge-cat{background:var(--primary-tint);color:var(--primary);}
.badge-reward{background:var(--amber-tint);color:#B8760D;}
.badge-state{background:var(--mint-tint);color:var(--mint);}

/* ---------- 卡片网格 ---------- */
.card-grid{margin-bottom:-24px;}
.card-grid > .cell{margin-bottom:24px;}
.info-card{
  display:flex;flex-direction:column;height:100%;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:20px;box-shadow:var(--shadow-md);
  transition:box-shadow .18s ease,transform .18s ease,border-color .18s ease;
}
.info-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-2px);border-color:var(--border);}
.card-thumb{width:100%;aspect-ratio:16/9;overflow:hidden;border-radius:12px;background:var(--primary-xlight);}
.card-thumb img{width:100%;height:100%;object-fit:cover;}
.card-body{padding-top:18px;display:flex;flex-direction:column;flex:1;}
.card-body h3{margin:12px 0 10px;}
.card-body p{font-size:15px;color:var(--text-2);line-height:1.8;}
.card-foot{margin-top:auto;padding-top:18px;display:flex;align-items:center;justify-content:space-between;gap:12px;}
.card-foot .meta{font-size:13px;color:var(--text-3);}
.link-arrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14px;font-weight:600;color:var(--primary);
}
.link-arrow i{transition:transform .18s ease;}
.link-arrow:hover i{transform:translateX(4px);}

/* ---------- 对照卡 ---------- */
.spec-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:8px 24px;box-shadow:var(--shadow-sm);
}
.spec-row{
  display:grid;grid-template-columns:180px 1fr;gap:20px;
  padding:20px 0;border-bottom:1px solid var(--line);align-items:start;
}
.spec-row:last-child{border-bottom:0;}
.spec-row .label{
  display:inline-flex;align-items:center;gap:8px;
  font-size:15px;font-weight:600;color:var(--text);
}
.spec-row .label i{color:var(--primary);font-size:14px;}
.spec-row .value{font-size:15px;color:var(--text-2);line-height:1.8;}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:900px;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:12px;
  box-shadow:var(--shadow-sm);overflow:hidden;transition:background .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.faq-item.open{background:var(--bg);border-color:var(--border);box-shadow:var(--shadow-md);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px;background:transparent;border:0;cursor:pointer;text-align:left;
  font-size:16px;font-weight:600;color:var(--text);line-height:1.5;
}
.faq-q .ic{
  flex-shrink:0;width:28px;height:28px;border-radius:999px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--primary-tint);color:var(--primary);font-size:13px;
  transition:transform .2s ease,background .2s ease,color .2s ease;
}
.faq-item.open .faq-q .ic{background:var(--primary);color:#fff;transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease;}
.faq-a-inner{padding:0 20px 20px;font-size:15px;line-height:1.9;color:var(--text-2);}

/* ---------- CTA ---------- */
.cta-card{
  position:relative;overflow:hidden;
  background:linear-gradient(120deg,var(--primary-tint) 0%,#fff 62%);
  border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:56px 48px;box-shadow:var(--shadow-md);
  display:grid;grid-template-columns:1.25fr .75fr;gap:40px;align-items:center;
}
.cta-card h2{margin-bottom:14px;}
.cta-card p{color:var(--text-2);font-size:16px;max-width:560px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.cta-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-card);box-shadow:var(--shadow-md);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--footer-bg);color:var(--footer-text);margin-top:var(--space-section);padding:64px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .logo-mark{background:linear-gradient(135deg,#3D7BEE,#1D5BD6);}
.footer-brand .logo-text{color:#fff;font-size:18px;font-weight:600;}
.footer-desc{font-size:14px;line-height:1.85;color:var(--footer-text);max-width:320px;}
.footer-contact{display:flex;flex-direction:column;gap:10px;margin-top:20px;font-size:13.5px;color:#9FB0C9;}
.footer-contact i{color:#6E86A8;margin-right:6px;}
.footer-title{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;}
.footer-list{display:flex;flex-direction:column;gap:12px;font-size:14px;}
.footer-list a{color:var(--footer-text);transition:color .18s ease,transform .18s ease;display:inline-block;}
.footer-list a:hover{color:#fff;transform:translateX(2px);}
.footer-bottom{
  margin-top:48px;padding-top:20px;border-top:1px solid rgba(198,210,228,.18);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:12px;color:#8A9AB4;
}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  h1{font-size:32px;}
  h2{font-size:25px;}
  :root{--space-section:64px;}
  .nav-links{display:none;}
  .nav-cta{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-shell{justify-content:space-between;}
  .cat-hero-grid{grid-template-columns:1fr;gap:32px;}
  .cat-hero-media{max-width:560px;}
  .cta-card{grid-template-columns:1fr;padding:40px 32px;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .spec-row{grid-template-columns:150px 1fr;}
}
@media (max-width:639px){
  :root{--space-section:48px;}
  h1{font-size:28px;}
  h2{font-size:22px;}
  .container{padding:0 16px;}
  .nav-shell{height:64px;padding:0 14px;}
  .logo-text{font-size:16px;}
  .btn-lg{height:48px;padding:0 22px;font-size:15px;}
  .btn{height:46px;padding:0 20px;}
  .cat-hero{padding:28px 0 0;}
  .media-chip{right:8px;bottom:8px;}
  .spec-card{padding:4px 18px;}
  .spec-row{grid-template-columns:1fr;gap:6px;padding:16px 0;}
  .cta-card{padding:32px 20px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{margin-top:36px;}
  .drawer-grid{grid-template-columns:1fr;}
}

/* roulang page: category2 */
:root{
  --primary:#1D5BD6;
  --primary-dark:#16479F;
  --primary-tint:#EAF1FE;
  --primary-ultra:#F4F8FF;
  --amber:#F5A623;
  --amber-tint:#FFF6E6;
  --mint:#12A594;
  --mint-tint:#E7F6F3;
  --text:#101B2D;
  --text-2:#46536B;
  --text-3:#7A879E;
  --bg:#F6F9FD;
  --card:#FFFFFF;
  --line:#E4EBF6;
  --border:#D8E4F6;
  --footer-bg:#101B2D;
  --footer-text:#C6D2E4;
  --r-btn:10px;
  --r-sm:8px;
  --r-card:16px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-sm:0 1px 2px rgba(14,27,46,.06);
  --sh-md:0 8px 24px rgba(20,50,100,.08);
  --sh-lg:0 18px 48px rgba(20,50,100,.12);
  --ease:180ms ease;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Segoe UI",Roboto,-apple-system,BlinkMacSystemFont,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color var(--ease),background-color var(--ease),border-color var(--ease);}
a:hover{text-decoration:none;}
h1,h2,h3,h4{margin:0;color:var(--text);font-weight:700;}
h1{font-size:40px;line-height:1.25;}
h2{font-size:30px;line-height:1.3;}
h3{font-size:20px;line-height:1.4;font-weight:600;}
h4{font-size:17px;line-height:1.5;font-weight:600;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:3px solid rgba(29,91,214,.25);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:88px 0;}
.section-sm{padding:64px 0;}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:80;padding:12px 0;}
.nav-shell{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  height:72px;padding:0 20px;background:var(--card);
  border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-md);
}
.nav-logo{display:flex;align-items:center;gap:10px;min-width:0;}
.logo-mark{
  width:38px;height:38px;flex:none;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--primary),var(--primary-dark));
  color:#fff;font-size:14px;font-weight:700;border-radius:10px;letter-spacing:.5px;
}
.logo-text{font-size:18px;font-weight:600;color:var(--text);white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:6px;}
.nav-link{
  display:inline-flex;align-items:center;gap:7px;height:40px;padding:0 14px;
  border-radius:var(--r-btn);color:var(--text-2);font-size:15px;font-weight:500;
}
.nav-link i{font-size:14px;color:var(--text-3);transition:color var(--ease);}
.nav-link:hover{background:var(--primary-tint);color:var(--primary);transform:translateY(-1px);}
.nav-link:hover i{color:var(--primary);}
.nav-link.active{background:var(--primary-tint);color:var(--primary);font-weight:600;}
.nav-link.active i{color:var(--primary);}
.nav-right{display:flex;align-items:center;gap:10px;}
.nav-toggle{
  display:none;width:44px;height:44px;align-items:center;justify-content:center;
  background:var(--primary-ultra);border:1px solid var(--border);border-radius:var(--r-btn);
  color:var(--primary);font-size:17px;cursor:pointer;
}
.mobile-drawer{display:none;margin-top:10px;padding:16px;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-md);}
.mobile-drawer.open{display:block;}
.drawer-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:14px;}
.drawer-item{
  display:flex;align-items:center;gap:8px;min-height:48px;padding:0 14px;
  background:var(--primary-ultra);border:1px solid var(--line);border-radius:var(--r-btn);
  color:var(--text-2);font-size:15px;
}
.drawer-item i{color:var(--text-3);}
.drawer-item.active{background:var(--primary-tint);color:var(--primary);font-weight:600;border-color:#C9DCFB;}
.drawer-item.active i{color:var(--primary);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:var(--r-btn);font-size:16px;font-weight:600;
  border:1px solid transparent;cursor:pointer;transition:all var(--ease);white-space:nowrap;
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:var(--sh-sm);}
.btn-primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-md);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:#fff;border-color:#CBD9EE;color:var(--text);}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-1px);}
.btn-link{background:transparent;color:var(--primary);padding:0;height:auto;font-weight:600;}
.btn-link:hover{color:var(--primary-dark);text-decoration:underline;}
.btn-sm{height:40px;padding:0 18px;font-size:15px;}
.btn-lg{height:52px;padding:0 32px;}
.btn-block{width:100%;}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;line-height:1.5;
}
.badge-primary{background:var(--primary-tint);color:var(--primary);}
.badge-amber{background:var(--amber-tint);color:#B36F05;}
.badge-mint{background:var(--mint-tint);color:#0B7A6D;}

/* ---------- 面包屑 ---------- */
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-3);padding:4px 0 20px;flex-wrap:wrap;}
.breadcrumb a{color:var(--text-3);}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .sep{color:#B9C5D8;}
.breadcrumb .current{color:var(--primary);font-weight:600;}

/* ---------- 页头 ---------- */
.page-head{
  position:relative;padding:28px 0 72px;
  background-image:linear-gradient(180deg,rgba(244,248,255,.95),rgba(246,249,253,.99)),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
}
.page-head-inner{text-align:center;max-width:880px;margin:0 auto;}
.page-head h1{margin:16px 0 18px;font-size:40px;}
.page-head .lead{font-size:17px;line-height:1.9;color:var(--text-2);}
.head-stats{margin-top:40px;}
.stat-card{
  height:100%;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--sh-sm);text-align:left;transition:box-shadow var(--ease),transform var(--ease);
}
.stat-card:hover{box-shadow:var(--sh-md);transform:translateY(-2px);}
.stat-num{font-size:30px;font-weight:700;color:var(--primary);line-height:1.2;}
.stat-label{display:block;font-size:15px;font-weight:600;color:var(--text);margin:4px 0 6px;}
.stat-card p{font-size:14px;color:var(--text-3);line-height:1.7;}

/* ---------- Z 字图文块 ---------- */
.zsection{padding-top:8px;}
.zblock{margin-bottom:64px;}
.zblock:last-child{margin-bottom:0;}
.zmedia{
  border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--sh-md);background:var(--primary-ultra);
}
.zmedia img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform 320ms ease;}
.zmedia:hover img{transform:scale(1.03);}
.zcopy{padding:12px 0;}
.zcopy h2{font-size:26px;margin:14px 0 14px;}
.zcopy p{font-size:16px;color:var(--text-2);line-height:1.85;margin-bottom:16px;}
.zfacts{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:20px;}
.zfact{
  background:var(--primary-ultra);border:1px solid var(--line);border-radius:var(--r-sm);
  padding:14px 16px;
}
.zfact strong{display:block;font-size:14px;color:var(--text);margin-bottom:2px;}
.zfact span{font-size:13px;color:var(--text-3);line-height:1.6;}

/* ---------- 成长进度 ---------- */
.growth-dash{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:28px;box-shadow:var(--sh-md);
}
.growth-head{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;flex-wrap:wrap;}
.growth-head h3{margin-top:10px;}
.growth-value{font-size:28px;font-weight:600;color:var(--primary);line-height:1.2;}
.growth-value span{font-size:16px;color:var(--text-3);margin-left:2px;}
.progress{
  height:10px;border-radius:var(--r-pill);background:var(--primary-tint);
  overflow:hidden;margin:20px 0 16px;
}
.progress-bar{height:100%;border-radius:var(--r-pill);background:linear-gradient(90deg,var(--primary),var(--mint));}
.milestones{display:flex;justify-content:space-between;gap:8px;flex-wrap:wrap;}
.milestones li{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-3);}
.milestones .dot{
  width:22px;height:22px;border-radius:50%;border:2px solid #CBD9EE;background:#fff;
  display:inline-flex;align-items:center;justify-content:center;font-size:10px;color:var(--text-3);
}
.milestones li.done{color:var(--text);font-weight:600;}
.milestones li.done .dot{background:var(--mint);border-color:var(--mint);color:#fff;}

/* ---------- 等级阶梯 ---------- */
.tier-grid{margin-top:36px;}
.tier-card{
  height:100%;display:flex;flex-direction:column;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-sm);transition:box-shadow var(--ease),transform var(--ease),border-color var(--ease);
}
.tier-card:hover{box-shadow:var(--sh-lg);transform:translateY(-2px);border-color:#C9DCFB;}
.tier-card h3{margin:14px 0 12px;font-size:19px;}
.tier-list{flex:1;display:flex;flex-direction:column;gap:10px;margin-bottom:18px;}
.tier-list li{position:relative;padding-left:20px;font-size:14px;color:var(--text-2);line-height:1.7;}
.tier-list li::before{
  content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:2px;
  background:var(--primary);opacity:.85;
}
.tier-progress{display:flex;align-items:center;gap:12px;}
.tier-progress .progress{flex:1;margin:0;height:8px;}
.tier-progress span{font-size:13px;font-weight:600;color:var(--text-3);}

/* ---------- 两栏要点 ---------- */
.split{display:grid;grid-template-columns:340px 1fr;gap:48px;align-items:start;}
.split .side p{font-size:15px;color:var(--text-2);line-height:1.85;margin-top:14px;}
.check-list{display:grid;gap:14px;}
.check-item{
  display:flex;gap:16px;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-card);padding:20px 22px;box-shadow:var(--sh-sm);
  transition:box-shadow var(--ease),transform var(--ease);
}
.check-item:hover{box-shadow:var(--sh-md);transform:translateY(-2px);}
.check-index{
  width:34px;height:34px;flex:none;border-radius:var(--r-pill);
  background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:600;
}
.check-item h4{margin-bottom:4px;}
.check-item p{font-size:14px;color:var(--text-2);line-height:1.75;}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px;max-width:920px;margin:0 auto;}
.faq-item{
  background:var(--card);border:1px solid var(--line);border-radius:12px;
  box-shadow:var(--sh-sm);overflow:hidden;transition:box-shadow var(--ease),background-color var(--ease);
}
.faq-item[open]{background:var(--bg);box-shadow:var(--sh-md);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px;font-size:16px;font-weight:600;color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-icon{
  width:26px;height:26px;flex:none;border-radius:var(--r-sm);background:var(--primary-tint);
  color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:13px;
  transition:transform var(--ease);
}
.faq-item[open] .faq-icon{transform:rotate(45deg);}
.faq-answer{padding:0 20px 20px;font-size:15px;line-height:1.9;color:var(--text-2);}

/* ---------- 表单 ---------- */
.form-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:32px;box-shadow:var(--sh-md);
}
.field{margin-bottom:18px;}
.field label{display:block;font-size:14px;color:var(--text-2);margin-bottom:8px;font-weight:500;}
.field input,.field select,.field textarea{
  width:100%;height:44px;padding:0 14px;font-size:15px;color:var(--text);
  background:#fff;border:1px solid var(--border);border-radius:var(--r-btn);
  transition:border-color var(--ease),box-shadow var(--ease);font-family:inherit;
}
.field textarea{height:auto;min-height:110px;padding:12px 14px;line-height:1.7;resize:vertical;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 4px rgba(29,91,214,.12);
}
.form-note{font-size:12px;color:var(--text-3);margin-top:12px;line-height:1.7;}
.form-note.is-ok{color:var(--mint);font-weight:600;}
.form-side{
  background:var(--primary-ultra);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;height:100%;
}
.form-side h4{margin-bottom:14px;}
.form-side ul{display:grid;gap:12px;}
.form-side li{position:relative;padding-left:20px;font-size:14px;color:var(--text-2);line-height:1.75;}
.form-side li::before{
  content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:50%;
  background:var(--amber);
}

/* ---------- CTA ---------- */
.cta-card{
  position:relative;overflow:hidden;
  background:linear-gradient(120deg,var(--primary-tint) 0%,#FFFFFF 70%);
  border:1px solid var(--border);border-radius:var(--r-lg);
  padding:44px 40px;box-shadow:var(--sh-md);
}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
.cta-inner h2{font-size:28px;margin-bottom:12px;}
.cta-inner p{font-size:15px;color:var(--text-2);max-width:620px;line-height:1.85;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--footer-bg);color:var(--footer-text);padding:64px 0 0;margin-top:24px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .logo-text{color:#fff;}
.footer-desc{font-size:14px;line-height:1.85;color:var(--footer-text);max-width:360px;}
.footer-contact{display:grid;gap:8px;margin-top:18px;font-size:13px;color:#98A7BF;}
.footer-contact i{margin-right:8px;color:var(--primary-tint);}
.footer-title{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;}
.footer-list{display:grid;gap:10px;}
.footer-list a{font-size:14px;color:var(--footer-text);}
.footer-list a:hover{color:#fff;}
.footer-bottom{
  margin-top:48px;padding:20px 0;border-top:1px solid rgba(255,255,255,.1);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12px;color:#8B9AB3;line-height:1.7;
}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1279px){
  .container{max-width:1140px;}
}
@media screen and (max-width:1023px){
  .nav-links,.nav-cta{display:none;}
  .nav-toggle{display:inline-flex;}
  .section{padding:64px 0;}
  .page-head{padding:20px 0 56px;}
  .page-head h1{font-size:32px;}
  .split{grid-template-columns:1fr;gap:28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px 24px;}
  .layer-card{padding:22px;}
}
@media screen and (max-width:767px){
  .container{padding:0 16px;}
  .section{padding:48px 0;}
  h1{font-size:28px;}
  h2{font-size:22px;}
  .page-head h1{font-size:28px;}
  .page-head .lead{font-size:15px;}
  .zblock{margin-bottom:44px;}
  .zcopy h2{font-size:22px;}
  .zfacts{grid-template-columns:1fr;}
  .growth-dash{padding:20px;}
  .tier-card{padding:20px;}
  .form-card{padding:22px;}
  .cta-card{padding:28px 22px;}
  .cta-inner h2{font-size:22px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .faq-item summary{padding:16px;font-size:15px;}
  .faq-answer{padding:0 16px 16px;font-size:14px;}
}
@media screen and (max-width:519px){
  .nav-shell{height:64px;padding:0 14px;}
  .logo-text{font-size:16px;}
  .head-stats{margin-top:28px;}
  .stat-num{font-size:24px;}
  .cta-actions .btn{width:100%;}
}

/* roulang page: category3 */
:root{
  --primary:#1D5BD6;
  --primary-dark:#16479F;
  --primary-tint:#EAF1FE;
  --primary-soft:#F4F8FF;
  --amber:#F5A623;
  --amber-tint:#FFF6E6;
  --mint:#12A594;
  --mint-tint:#E7F6F3;
  --text:#101B2D;
  --text-2:#46536B;
  --text-3:#7A879E;
  --bg:#F6F9FD;
  --card:#FFFFFF;
  --line:#E4EBF6;
  --border:#D8E4F6;
  --footer-bg:#101B2D;
  --footer-text:#C6D2E4;
  --r-btn:10px;
  --r-sm:8px;
  --r-card:16px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-sm:0 1px 2px rgba(14,27,46,.06);
  --sh-md:0 8px 24px rgba(20,50,100,.08);
  --sh-lg:0 18px 48px rgba(20,50,100,.12);
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:120px;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
h1,h2,h3,h4,p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
input,button{font-size:inherit;}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(29,91,214,.25);border-radius:var(--r-sm);}
.container{max-width:1200px;margin:0 auto;padding:0 24px;}
.badge{display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:var(--r-pill);font-size:12px;line-height:1;font-weight:600;}
.badge-primary{background:var(--primary-tint);color:var(--primary);}
.badge-amber{background:var(--amber-tint);color:#B36E05;}
.badge-mint{background:var(--mint-tint);color:var(--mint);}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:12px;z-index:80;padding:0;}
.site-header .container{padding:0 24px;}
.nav-shell{
  display:flex;align-items:center;gap:20px;
  height:72px;padding:0 20px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-md);
}
.nav-logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-mark{
  width:38px;height:38px;border-radius:11px;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--primary),var(--primary-dark));
  color:#fff;font-weight:700;font-size:15px;letter-spacing:.5px;
  box-shadow:0 6px 14px rgba(29,91,214,.28);
}
.logo-text{font-size:18px;font-weight:600;color:var(--text);}
.nav-links{display:flex;align-items:center;gap:6px;flex:1 1 auto;justify-content:center;}
.nav-link{
  display:inline-flex;align-items:center;gap:8px;
  height:40px;padding:0 14px;border-radius:var(--r-btn);
  color:var(--text-2);font-size:15px;font-weight:500;
  transition:background .18s ease,color .18s ease,transform .18s ease;
}
.nav-link i{font-size:13px;opacity:.85;}
.nav-link:hover{background:var(--primary-tint);color:var(--primary-dark);transform:translateY(-1px);}
.nav-link.active{background:var(--primary-tint);color:var(--primary);font-weight:600;}
.nav-right{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border:1px solid transparent;
  border-radius:var(--r-btn);font-size:15px;font-weight:600;
  cursor:pointer;transition:all .18s ease;
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 6px 16px rgba(29,91,214,.22);}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-1px);box-shadow:var(--sh-md);}
.btn-primary:active{transform:translateY(0);}
.btn-secondary{background:#fff;border-color:#CBD9EE;color:var(--text);}
.btn-secondary:hover{border-color:var(--primary);color:var(--primary);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:var(--r-sm);}
.btn-lg{height:52px;padding:0 34px;}
.btn-block{width:100%;}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:var(--r-btn);
  background:var(--primary-tint);color:var(--primary);border:0;cursor:pointer;
}
.mobile-drawer{display:none;margin-top:12px;padding:16px;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-md);}
.mobile-drawer.open{display:block;}
.drawer-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:12px;}
.drawer-item{
  display:flex;align-items:center;gap:8px;min-height:48px;padding:0 12px;
  border-radius:var(--r-btn);background:var(--primary-soft);color:var(--text-2);font-size:14px;font-weight:500;
}
.drawer-item.active{background:var(--primary-tint);color:var(--primary);font-weight:600;}

/* ---------- 面包屑 ---------- */
.crumb{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-3);padding:26px 0 0;}
.crumb a:hover{color:var(--primary);}
.crumb-current{color:var(--primary);font-weight:600;}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:28px 0 56px;}
.hero::after{
  content:"";position:absolute;right:-8%;top:-30%;width:62%;height:130%;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  opacity:.07;border-radius:50%;pointer-events:none;z-index:0;
}
.hero .container{position:relative;z-index:1;}
.hero-grid{margin-top:18px;}
.hero-title{font-size:40px;line-height:1.25;font-weight:700;margin:16px 0 14px;letter-spacing:0;}
.hero-title em{font-style:normal;color:var(--primary);}
.hero-sub{font-size:16px;line-height:1.85;color:var(--text-2);max-width:620px;}
.hero-chips{display:flex;flex-wrap:wrap;gap:10px;margin:22px 0 20px;}
.chip{
  display:inline-flex;align-items:center;gap:8px;height:40px;padding:0 16px;
  border-radius:var(--r-pill);background:#fff;border:1px solid var(--border);
  font-size:14px;font-weight:500;color:var(--text-2);transition:all .18s ease;
}
.chip:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-1px);box-shadow:var(--sh-sm);}
.hero-search{position:relative;max-width:440px;}
.hero-search i{position:absolute;left:16px;top:50%;transform:translateY(-50%);color:var(--text-3);font-size:14px;}
.hero-search input{
  width:100%;height:48px;padding:0 16px 0 42px;margin:0;
  border:1px solid var(--border);border-radius:var(--r-btn);
  background:#fff;color:var(--text);font-size:15px;
  box-shadow:var(--sh-sm);transition:border-color .18s ease,box-shadow .18s ease;
}
.hero-search input::placeholder{color:var(--text-3);}
.hero-search input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(29,91,214,.18);outline:none;}
.hero-media{margin:0;border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-lg);border:1px solid var(--line);}
.hero-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3;}

/* ---------- 两栏布局 ---------- */
.section{padding:0 0 72px;}
.layout{display:grid;grid-template-columns:240px 1fr;gap:32px;align-items:start;}
.toc-card{
  position:sticky;top:104px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:20px;box-shadow:var(--sh-sm);
}
.toc-title{font-size:13px;font-weight:600;color:var(--text-3);margin-bottom:12px;}
.toc-list a{
  display:block;padding:10px 12px;border-radius:var(--r-sm);
  font-size:14px;color:var(--text-2);border-left:3px solid transparent;
  transition:all .18s ease;
}
.toc-list a:hover{background:var(--primary-soft);color:var(--primary);}
.toc-list a.active{border-left-color:var(--primary);background:var(--primary-tint);color:var(--primary);font-weight:600;}
.toc-note{
  margin-top:16px;padding-top:16px;border-top:1px solid var(--line);
  font-size:12px;line-height:1.7;color:var(--text-3);
}

/* ---------- 问答 ---------- */
.qa-head-panel{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:24px;}
.panel-title{font-size:30px;line-height:1.3;font-weight:700;}
.panel-sub{font-size:14px;color:var(--text-3);margin-top:6px;}
.qa-group{margin-bottom:36px;}
.qa-group-head{display:flex;align-items:center;gap:12px;margin-bottom:14px;}
.qa-group-head i{
  width:34px;height:34px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;
  background:var(--primary-tint);color:var(--primary);font-size:14px;
}
.qa-group-title{font-size:20px;font-weight:600;line-height:1.4;}
.qa-item{
  background:#fff;border:1px solid var(--line);border-radius:12px;
  box-shadow:var(--sh-sm);margin-bottom:12px;overflow:hidden;
  transition:background .18s ease,box-shadow .18s ease;
}
.qa-item:hover{box-shadow:var(--sh-md);}
.qa-item.open{background:var(--bg);}
.qa-head{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px;background:transparent;border:0;cursor:pointer;text-align:left;
  font-size:16px;font-weight:600;line-height:1.5;color:var(--text);
}
.qa-sign{
  position:relative;flex:0 0 26px;width:26px;height:26px;border-radius:50%;
  background:var(--primary-tint);
}
.qa-sign::before,.qa-sign::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--primary);border-radius:2px;
}
.qa-sign::before{width:12px;height:2px;transform:translate(-50%,-50%);}
.qa-sign::after{width:2px;height:12px;transform:translate(-50%,-50%);transition:transform .2s ease;}
.qa-item.open .qa-sign::after{transform:translate(-50%,-50%) scaleY(0);}
.qa-body{display:none;padding:0 20px 20px;font-size:15px;line-height:1.9;color:var(--text-2);}
.qa-item.open .qa-body{display:block;}
.qa-body p+p{margin-top:12px;}
.qa-body strong{color:var(--text);font-weight:600;}
.qa-empty{
  display:none;padding:40px 24px;text-align:center;background:#fff;border:1px dashed var(--border);
  border-radius:var(--r-card);color:var(--text-3);font-size:14px;
}

/* ---------- CTA ---------- */
.cta-section{padding:0 0 88px;}
.cta-card{
  background:linear-gradient(135deg,var(--primary-tint) 0%,#FFFFFF 72%);
  border:1px solid var(--border);border-radius:var(--r-lg);
  padding:44px;display:grid;grid-template-columns:1fr auto;gap:32px;align-items:center;
  box-shadow:var(--sh-md);
}
.cta-title{font-size:28px;line-height:1.35;font-weight:700;margin-bottom:12px;}
.cta-text{font-size:15px;line-height:1.85;color:var(--text-2);max-width:620px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px;}
.cta-media{width:220px;border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-md);}
.cta-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--footer-bg);color:var(--footer-text);padding:64px 0 0;margin-top:24px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand .logo-text{color:#fff;}
.footer-desc{font-size:14px;line-height:1.85;color:var(--footer-text);max-width:340px;}
.footer-contact{display:flex;flex-direction:column;gap:8px;margin-top:16px;font-size:13px;color:#9FB0C9;}
.footer-contact i{margin-right:6px;color:#6E86A8;}
.footer-title{font-size:15px;font-weight:600;color:#fff;margin-bottom:14px;letter-spacing:0;}
.footer-list{display:flex;flex-direction:column;gap:10px;}
.footer-list a{font-size:14px;color:var(--footer-text);transition:color .18s ease;}
.footer-list a:hover{color:#fff;}
.footer-bottom{
  margin-top:40px;padding:20px 0;border-top:1px solid rgba(198,210,228,.18);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:12px;line-height:1.6;color:#8FA2BC;
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .hero-title{font-size:36px;}
}
@media (max-width:1023px){
  .nav-links{display:none;}
  .nav-cta{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-shell{height:64px;}
  .mobile-drawer{display:none;}
  .mobile-drawer.open{display:block;}
  .layout{grid-template-columns:1fr;gap:24px;}
  .toc-card{position:static;padding:16px;}
  .toc-list{display:flex;gap:8px;overflow-x:auto;padding-bottom:6px;-webkit-overflow-scrolling:touch;}
  .toc-list a{
    flex:0 0 auto;border-left:0;border:1px solid var(--border);border-radius:var(--r-pill);
    padding:8px 16px;background:#fff;white-space:nowrap;
  }
  .toc-list a.active{border-left:0;border-color:var(--primary);}
  .toc-note{display:none;}
  .hero-title{font-size:30px;}
  .panel-title{font-size:24px;}
  .cta-card{grid-template-columns:1fr;padding:32px;}
  .cta-media{width:100%;max-width:320px;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .section{padding-bottom:56px;}
}
@media (max-width:639px){
  .container{padding:0 16px;}
  .site-header .container{padding:0 16px;}
  .hero{padding:20px 0 40px;}
  .hero-title{font-size:28px;}
  .hero-search{max-width:100%;}
  .qa-head{padding:16px;font-size:15px;}
  .qa-body{padding:0 16px 16px;font-size:14.5px;}
  .cta-title{font-size:22px;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;justify-content:flex-start;}
  .panel-title{font-size:22px;}
}
@media (min-width:1024px){
  .mobile-drawer{display:none !important;}
}