/* roulang page: index */
/* ================= 设计变量 ================= */
:root{
  --brand:#1D5C8C;
  --brand-deep:#14445F;
  --brand-soft:#E6EFF6;
  --amber:#E8A33D;
  --amber-deep:#C9862A;
  --amber-soft:#FBF1E1;
  --bg:#F6F8FB;
  --surface:#FFFFFF;
  --text:#16202B;
  --muted:#5B6B7A;
  --line:#E3E9F0;
  --divider:#EDF1F6;
  --footer-bg:#EDF1F6;
  --radius-lg:18px;
  --radius:14px;
  --radius-sm:10px;
  --shadow-1:0 1px 2px rgba(16,32,48,.06),0 8px 24px rgba(16,32,48,.08);
  --shadow-2:0 2px 4px rgba(16,32,48,.08),0 16px 36px rgba(16,32,48,.12);
  --gap-section:84px;
}

/* ================= 基础重置 ================= */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",sans-serif;
  font-size:16px;
  line-height:1.9;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;font-weight:600;line-height:1.35;color:var(--text);letter-spacing:.2px;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand);text-decoration:none;transition:color .18s ease,background-color .18s ease;}
button{font:inherit;border:0;background:none;cursor:pointer;color:inherit;}
input{font:inherit;}
b,strong{font-weight:600;}
time,.num{font-variant-numeric:tabular-nums;}

/* ================= 通用容器与按钮 ================= */
.layout{
  max-width:1224px;
  margin:0 auto;
  padding:0 24px;
  display:flex;
  gap:32px;
  align-items:flex-start;
}
.content-area{flex:1 1 auto;min-width:0;}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 26px;
  border-radius:999px;
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#fff;}
.btn-primary:hover{background:var(--brand-deep);color:#fff;transform:translateY(-1px);box-shadow:0 8px 18px rgba(16,32,48,.16);}
.btn-primary:active{transform:translateY(0);}
.btn-outline{background:transparent;color:var(--brand);border-color:var(--brand);}
.btn-outline:hover{background:var(--brand-soft);color:var(--brand-deep);transform:translateY(-1px);}
.btn-sm{height:40px;padding:0 20px;font-size:14px;}
.btn-block{width:100%;}
.btn:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible{
  outline:3px solid rgba(29,92,140,.32);
  outline-offset:2px;
}

.eyebrow{
  display:inline-block;
  font-size:13px;
  font-weight:600;
  letter-spacing:.4px;
  color:var(--brand);
  background:var(--brand-soft);
  border-radius:999px;
  padding:4px 14px;
  margin-bottom:16px;
}

.section{margin-top:var(--gap-section);}
.section-head{max-width:760px;margin-bottom:36px;}
.section-head h2{font-size:clamp(23px,2.4vw,30px);}
.section-head p{margin-top:14px;color:var(--muted);font-size:15.5px;}

.badge{
  display:inline-flex;
  align-items:center;
  height:23px;
  padding:0 11px;
  border-radius:999px;
  font-size:12.5px;
  font-weight:600;
  background:var(--brand-soft);
  color:var(--brand-deep);
  line-height:1;
  white-space:nowrap;
}
.badge-amber{background:var(--amber-soft);color:var(--amber-deep);}

/* ================= 顶部倒计时条 ================= */
.topbar{
  position:sticky;
  top:0;
  z-index:70;
  background:#FFFFFF;
  border-bottom:1px solid var(--line);
  box-shadow:0 1px 0 rgba(16,32,48,.03);
}
.topbar-inner{
  max-width:1224px;
  margin:0 auto;
  padding:0 24px;
  height:48px;
  display:flex;
  align-items:center;
  gap:20px;
}
.topbar-badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:24px;
  padding:0 12px;
  border-radius:999px;
  background:var(--brand-soft);
  color:var(--brand-deep);
  font-size:12.5px;
  font-weight:600;
  white-space:nowrap;
}
.countdown{display:flex;align-items:center;gap:6px;}
.cd-cell{display:flex;flex-direction:column;align-items:center;gap:2px;}
.cd-cell b{
  display:grid;
  place-items:center;
  width:28px;
  height:32px;
  border-radius:8px;
  background:var(--amber);
  color:#fff;
  font-size:14px;
  font-weight:600;
  font-variant-numeric:tabular-nums;
  line-height:1;
}
.cd-cell i{font-style:normal;font-size:10.5px;color:var(--muted);line-height:1;}
.cd-sep{color:#B9C6D2;font-weight:600;padding-bottom:12px;}
.topbar-link{
  margin-left:auto;
  font-size:13.5px;
  font-weight:600;
  color:var(--brand);
  display:inline-flex;
  align-items:center;
  gap:6px;
  white-space:nowrap;
}
.topbar-link:hover{color:var(--brand-deep);}
.topbar-link i{font-size:11px;}

/* ================= 移动端顶栏 ================= */
.mobile-bar{
  display:none;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:12px 0 4px;
}
.mobile-brand{font-size:17px;font-weight:600;color:var(--brand-deep);}
.menu-toggle{
  display:inline-flex;
  align-items:center;
  gap:7px;
  height:40px;
  padding:0 16px;
  border-radius:999px;
  border:1px solid var(--line);
  background:#fff;
  font-size:14px;
  font-weight:600;
  color:var(--brand-deep);
}
.menu-toggle:hover{background:var(--brand-soft);}

/* ================= 左侧竖向导航 ================= */
.side-nav{
  flex:0 0 240px;
  width:240px;
  position:sticky;
  top:72px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-1);
  padding:22px 18px 20px;
}
.brand{display:flex;align-items:center;gap:12px;padding-bottom:18px;border-bottom:1px solid var(--divider);}
.brand-mark{
  flex:0 0 40px;
  width:40px;height:40px;
  border-radius:12px;
  background:var(--brand);
  color:#fff;
  display:grid;place-items:center;
  font-size:17px;
}
.brand-text{display:flex;flex-direction:column;min-width:0;}
.brand-name{font-size:18px;font-weight:600;color:var(--brand-deep);line-height:1.3;}
.brand-sub{font-size:12px;color:var(--muted);line-height:1.5;margin-top:2px;}

.nav-group{margin-top:20px;}
.nav-label{font-size:12px;letter-spacing:.6px;color:var(--muted);margin-bottom:8px;}
.nav-list li + li{margin-top:4px;}
.nav-link{
  position:relative;
  display:block;
  padding:10px 12px 10px 16px;
  border-radius:8px;
  font-size:15px;
  color:var(--muted);
  transition:background-color .18s ease,color .18s ease;
}
.nav-link::before{
  content:"";
  position:absolute;
  left:0;top:50%;
  width:3px;height:20px;
  border-radius:2px;
  background:var(--brand);
  transform:translateY(-50%) scaleY(0);
  transition:transform .2s ease;
}
.nav-link:hover{background:#F1F5F9;color:var(--brand-deep);}
.nav-link.is-active{background:var(--brand-soft);color:var(--brand-deep);font-weight:600;}
.nav-link.is-active::before{transform:translateY(-50%) scaleY(1);}

.nav-cta{margin-top:22px;}
.nav-note{
  margin-top:16px;
  font-size:12.5px;
  color:var(--muted);
  line-height:1.75;
  padding-top:16px;
  border-top:1px solid var(--divider);
}
.nav-scrim{
  display:none;
  position:fixed;
  inset:0;
  background:rgba(16,32,48,.42);
  z-index:110;
  opacity:0;
  transition:opacity .25s ease;
}
.nav-scrim.is-on{display:block;opacity:1;}

/* ================= Hero ================= */
.hero{
  margin-top:32px;
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:44px;
  align-items:center;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-1);
  padding:46px;
}
.hero h1{font-size:clamp(28px,3.1vw,38px);line-height:1.34;letter-spacing:.3px;}
.hero-sub{margin-top:18px;color:var(--muted);font-size:16.5px;line-height:1.9;}
.hero-actions{margin-top:28px;display:flex;flex-wrap:wrap;gap:14px;}
.hero-points{
  margin-top:24px;
  display:flex;
  flex-wrap:wrap;
  gap:10px;
}
.hero-points li{
  display:inline-flex;
  align-items:center;
  gap:7px;
  font-size:13.5px;
  color:var(--muted);
  background:#F3F6FA;
  border:1px solid var(--line);
  border-radius:999px;
  padding:5px 14px;
}
.hero-points i{color:var(--brand);font-size:12px;}
.hero-media{
  position:relative;
  border-radius:var(--radius);
  overflow:hidden;
  aspect-ratio:5/4;
  background:var(--brand-soft);
  box-shadow:var(--shadow-1);
}
.hero-media img{width:100%;height:100%;object-fit:cover;}
.hero-media::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:36%;
  background:linear-gradient(180deg,rgba(230,239,246,0) 0%,rgba(230,239,246,.9) 100%);
  pointer-events:none;
}
.hero-media-tag{
  position:absolute;
  left:18px;bottom:18px;
  z-index:2;
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:rgba(255,255,255,.94);
  border:1px solid var(--line);
  border-radius:999px;
  padding:7px 16px;
  font-size:13px;
  font-weight:600;
  color:var(--brand-deep);
  box-shadow:var(--shadow-1);
}
.hero-media-tag i{color:var(--amber);}

/* ================= 活动卖点 2×2 交错 ================= */
.feature-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:24px;
}
.feature-item{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow-1);
  padding:26px;
  transition:transform .22s ease,box-shadow .22s ease;
}
.feature-item:nth-child(even){margin-top:36px;}
.feature-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}
.feature-num{
  display:block;
  font-size:34px;
  font-weight:700;
  line-height:1;
  color:var(--brand);
  opacity:.22;
  font-variant-numeric:tabular-nums;
  margin-bottom:14px;
}
.feature-item h3{font-size:19px;}
.feature-item p{margin-top:10px;color:var(--muted);font-size:15px;}

/* ================= 亮点图墙 ================= */
.gallery{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  grid-auto-rows:132px;
  gap:16px;
}
.gallery figure{
  position:relative;
  margin:0;
  border-radius:var(--radius);
  overflow:hidden;
  background:var(--brand-soft);
  transition:transform .28s ease,box-shadow .28s ease;
}
.gallery figure:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}
.gallery img{width:100%;height:100%;object-fit:cover;transition:transform .38s ease;}
.gallery figure:hover img{transform:scale(1.05);}
.gallery figcaption{
  position:absolute;
  left:14px;bottom:12px;
  z-index:2;
  font-size:13px;
  font-weight:600;
  color:#fff;
  text-shadow:0 1px 6px rgba(16,32,48,.55);
}
.g-large{grid-column:span 2;grid-row:span 2;}

/* ================= 流程步骤 ================= */
.steps{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
}
.step{
  position:relative;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow-1);
  padding:24px 22px;
  transition:transform .22s ease,box-shadow .22s ease;
}
.step:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}
.step-idx{
  display:grid;
  place-items:center;
  width:34px;height:34px;
  border-radius:50%;
  background:var(--brand-soft);
  color:var(--brand-deep);
  font-size:14px;
  font-weight:700;
  font-variant-numeric:tabular-nums;
  margin-bottom:16px;
}
.step h3{font-size:17px;}
.step p{margin-top:8px;font-size:14.5px;color:var(--muted);}

/* ================= 准备清单 ================= */
.prep-panel{
  display:grid;
  grid-template-columns:5fr 7fr;
  gap:36px;
  align-items:center;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-1);
  padding:40px;
}
.prep-panel h2{font-size:clamp(22px,2.2vw,27px);}
.prep-panel p.prep-desc{margin-top:14px;color:var(--muted);font-size:15.5px;}
.checklist{display:grid;gap:12px;}
.checklist li{
  display:flex;
  gap:12px;
  align-items:flex-start;
  background:#F7FAFC;
  border:1px solid var(--divider);
  border-radius:var(--radius-sm);
  padding:14px 16px;
  font-size:14.5px;
  color:var(--text);
  line-height:1.8;
}
.checklist i{
  color:var(--brand);
  font-size:14px;
  margin-top:5px;
  flex:0 0 auto;
}

/* ================= 最新信息列表 ================= */
.post-list{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-1);
  padding:8px 26px;
}
.post-item{
  display:grid;
  grid-template-columns:168px 1fr;
  gap:22px;
  padding:24px 0;
  border-bottom:1px solid var(--divider);
}
.post-item:last-child{border-bottom:0;}
.post-thumb{
  display:block;
  border-radius:var(--radius-sm);
  overflow:hidden;
  aspect-ratio:4/3;
  background:var(--brand-soft);
}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.post-item:hover .post-thumb img{transform:scale(1.05);}
.post-body{min-width:0;}
.post-meta{display:flex;align-items:center;gap:12px;font-size:13px;color:var(--muted);}
.post-body h3{margin-top:10px;font-size:18px;line-height:1.5;}
.post-body h3 a{color:var(--text);}
.post-body h3 a:hover{color:var(--brand);}
.post-excerpt{
  margin-top:8px;
  font-size:14.5px;
  color:var(--muted);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.post-more{
  display:inline-flex;
  align-items:center;
  gap:6px;
  margin-top:12px;
  font-size:13.5px;
  font-weight:600;
  color:var(--brand);
}
.post-more:hover{color:var(--brand-deep);gap:9px;}
.post-more i{font-size:11px;transition:transform .2s ease;}

.empty-state{
  text-align:center;
  padding:56px 20px;
}
.empty-state .empty-icon{
  width:58px;height:58px;
  margin:0 auto 16px;
  border-radius:50%;
  background:var(--brand-soft);
  color:var(--brand);
  display:grid;place-items:center;
  font-size:22px;
}
.empty-state p{color:var(--muted);font-size:15px;}
.empty-state .btn{margin-top:20px;}

/* ================= CTA 表单面板 ================= */
.cta-panel{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:44px;
  background:#F1F6FA;
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:46px;
  scroll-margin-top:76px;
}
.cta-panel h2{font-size:clamp(22px,2.3vw,28px);}
.cta-copy > p{margin-top:14px;color:var(--muted);font-size:15.5px;}
.cta-points{margin-top:22px;display:grid;gap:10px;}
.cta-points li{display:flex;align-items:center;gap:10px;font-size:14.5px;color:var(--text);}
.cta-points i{color:var(--brand);font-size:13px;}
.cta-form{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow-1);
  padding:26px;
}
.cta-form label{display:block;font-size:13.5px;font-weight:600;color:var(--text);margin-bottom:7px;}
.cta-form input{
  width:100%;
  height:46px;
  padding:0 14px;
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  background:#FBFCFE;
  color:var(--text);
  font-size:15px;
  transition:border-color .18s ease,box-shadow .18s ease,background-color .18s ease;
}
.cta-form input::placeholder{color:#9AA9B7;}
.cta-form input:hover{border-color:#CBD8E4;}
.cta-form input:focus{
  outline:none;
  border-color:var(--brand);
  background:#fff;
  box-shadow:0 0 0 4px rgba(29,92,140,.12);
}
.form-row + .form-row{margin-top:16px;}
.cta-form .btn{margin-top:22px;}
.form-note{margin-top:12px;font-size:12.5px;color:var(--muted);line-height:1.7;}

/* ================= FAQ ================= */
.faq{max-width:820px;margin:0 auto;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow-1);padding:10px 26px;}
.faq-item{border-bottom:1px solid var(--divider);}
.faq-item:last-child{border-bottom:0;}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  text-align:left;
  padding:20px 0;
  font-size:16px;
  font-weight:600;
  color:var(--text);
  transition:color .18s ease;
}
.faq-q:hover{color:var(--brand);}
.faq-icon{position:relative;flex:0 0 18px;width:18px;height:18px;}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--brand);
  border-radius:2px;
  transition:transform .25s ease,opacity .25s ease;
}
.faq-icon::before{left:0;top:8px;width:18px;height:2px;}
.faq-icon::after{left:8px;top:0;width:2px;height:18px;}
.faq-item.is-open .faq-icon::after{transform:scaleY(0);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-a p{padding:0 40px 22px 0;font-size:15px;line-height:1.9;color:var(--muted);}

/* ================= 页脚 ================= */
.site-footer{
  margin-top:96px;
  background:var(--footer-bg);
  border-top:1px solid var(--line);
}
.footer-inner{
  max-width:1224px;
  margin:0 auto;
  padding:56px 24px 0;
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:36px;
}
.footer-logo{font-size:19px;font-weight:600;color:var(--brand-deep);}
.footer-brand p{margin-top:14px;font-size:14px;color:var(--muted);max-width:300px;}
.footer-col h4{font-size:14px;color:var(--brand-deep);letter-spacing:.4px;}
.footer-col ul{margin-top:16px;display:grid;gap:10px;}
.footer-col a{font-size:14px;color:var(--muted);}
.footer-col a:hover{color:var(--brand);}
.footer-col p{font-size:14px;color:var(--muted);margin-top:16px;}
.footer-col p + p{margin-top:8px;}
.footer-bottom{
  max-width:1224px;
  margin:0 auto;
  padding:24px 24px 30px;
  margin-top:44px;
  border-top:1px solid #DDE5EE;
  display:flex;
  flex-wrap:wrap;
  gap:10px 20px;
  align-items:center;
  justify-content:space-between;
  font-size:13px;
  color:var(--muted);
}
.footer-bottom a{color:var(--muted);}
.footer-bottom a:hover{color:var(--brand);}

/* ================= 响应式 ================= */
@media (max-width:1200px){
  .feature-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:991px){
  .layout{display:block;padding:0 18px;}
  .mobile-bar{display:flex;}
  .side-nav{
    position:fixed;
    top:0;left:0;
    width:min(300px,86vw);
    height:100%;
    max-height:100vh;
    border-radius:0 18px 18px 0;
    border-left:0;
    z-index:120;
    transform:translateX(-103%);
    transition:transform .28s ease;
    overflow-y:auto;
    padding:24px 18px 32px;
  }
  .side-nav.is-open{transform:translateX(0);}
  .hero{grid-template-columns:1fr;gap:32px;padding:32px 26px;margin-top:20px;}
  .hero-media{aspect-ratio:16/10;}
  .prep-panel{grid-template-columns:1fr;gap:26px;padding:30px 26px;}
  .cta-panel{grid-template-columns:1fr;gap:30px;padding:32px 26px;}
  .footer-inner{grid-template-columns:1fr 1fr;gap:30px;padding-top:44px;}
  :root{--gap-section:60px;}
}
@media (max-width:767px){
  .topbar-inner{height:auto;min-height:48px;flex-wrap:wrap;padding:8px 18px;gap:10px 14px;}
  .topbar-link{margin-left:0;}
  .cd-cell i{display:none;}
  .cd-sep{padding-bottom:0;}
  .feature-grid{grid-template-columns:1fr;}
  .feature-item:nth-child(even){margin-top:0;}
  .gallery{grid-template-columns:repeat(2,1fr);grid-auto-rows:150px;}
  .g-large{grid-column:span 2;grid-row:span 1;}
  .steps{grid-template-columns:1fr 1fr;}
  .post-list{padding:4px 18px;}
  .post-item{grid-template-columns:1fr;gap:16px;}
  .post-thumb{aspect-ratio:16/9;}
  .faq{padding:6px 18px;}
  .faq-a p{padding-right:0;}
}
@media (max-width:520px){
  body{font-size:15.5px;}
  .layout{padding:0 14px;}
  .topbar-badge{font-size:11.5px;padding:0 10px;}
  .hero{padding:26px 20px;}
  .hero h1{font-size:25px;}
  .hero-sub{font-size:15.5px;}
  .hero-actions .btn{width:100%;}
  .hero-points li{font-size:12.5px;}
  .steps{grid-template-columns:1fr;}
  .gallery{grid-auto-rows:130px;gap:12px;}
  .cta-panel{padding:26px 18px;}
  .cta-form{padding:20px;}
  .footer-inner{grid-template-columns:1fr;padding-top:38px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .brand-name{font-size:17px;}
}

/* roulang page: article */
:root{
  --brand:#1D5C8C;
  --brand-deep:#14445F;
  --brand-soft:#E6EFF6;
  --amber:#E8A33D;
  --amber-deep:#C9821B;
  --page:#F6F8FB;
  --surface:#FFFFFF;
  --ink:#16202B;
  --ink-2:#5B6B7A;
  --line:#E3E9F0;
  --line-2:#EDF1F6;
  --r-lg:14px;
  --r-md:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(16,32,48,.06),0 8px 24px rgba(16,32,48,.08);
  --sh-2:0 2px 8px rgba(16,32,48,.08),0 16px 38px rgba(16,32,48,.12);
  --sidebar-w:240px;
  --maxw:1200px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  padding:0;
  background:var(--page);
  color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand);text-decoration:none;background:transparent;transition:color .18s ease,border-color .18s ease;}
a:hover{color:var(--brand-deep);}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer;}
input,textarea,select{font:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0;}
ul,ol{list-style:none;}
strong,b{font-weight:600;}
em{font-style:normal;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
::selection{background:var(--brand-soft);color:var(--brand-deep);}

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

.sidebar{
  position:fixed;
  top:0;
  left:0;
  width:var(--sidebar-w);
  height:100vh;
  background:var(--surface);
  border-right:1px solid var(--line);
  padding:24px 16px 28px;
  overflow-y:auto;
  z-index:80;
  display:flex;
  flex-direction:column;
  gap:22px;
}
.main-area{
  margin-left:var(--sidebar-w);
  min-width:0;
  display:flex;
  flex-direction:column;
  min-height:100vh;
}
.container{
  width:100%;
  max-width:var(--maxw);
  margin:0 auto;
  padding:0 32px;
}

/* ============ 品牌区 ============ */
.brand{
  display:flex;
  align-items:flex-start;
  gap:10px;
  padding:2px 6px 18px;
  border-bottom:1px solid var(--line-2);
}
.brand:hover{color:inherit;}
.brand-mark{
  flex:0 0 38px;
  width:38px;
  height:38px;
  border-radius:11px;
  background:linear-gradient(150deg,#2C74A8,#14445F);
  color:#fff;
  font-size:14px;
  font-weight:700;
  letter-spacing:.5px;
  display:flex;
  align-items:center;
  justify-content:center;
  box-shadow:0 4px 12px rgba(29,92,140,.24);
}
.brand-text{min-width:0;}
.brand-text b{
  display:block;
  font-size:16px;
  line-height:1.4;
  font-weight:700;
  color:var(--ink);
  letter-spacing:.2px;
}
.brand-text span{
  display:block;
  font-size:12px;
  line-height:1.5;
  color:var(--ink-2);
  margin-top:2px;
}

/* ============ 导航 ============ */
.nav-group{flex:0 0 auto;}
.nav-label{
  font-size:12px;
  letter-spacing:.1em;
  color:var(--ink-2);
  margin:0 0 10px 10px;
}
.nav-list li{margin-bottom:4px;}
.nav-link{
  position:relative;
  display:block;
  padding:10px 12px 10px 14px;
  border-radius:var(--r-md);
  font-size:15px;
  line-height:1.5;
  color:#37485A;
  transition:background .18s ease,color .18s ease,padding-left .18s ease;
}
.nav-link::before{
  content:"";
  position:absolute;
  left:0;
  top:50%;
  width:3px;
  height:0;
  border-radius:0 3px 3px 0;
  background:var(--brand);
  transform:translateY(-50%);
  transition:height .2s ease;
}
.nav-link:hover,.nav-link:focus-visible{
  background:var(--brand-soft);
  color:var(--brand-deep);
}
.nav-link:hover::before,.nav-link:focus-visible::before{height:58%;}
.nav-link.is-active{
  background:var(--brand-soft);
  color:var(--brand-deep);
  font-weight:600;
}
.nav-link.is-active::before{height:58%;}

.sidebar-foot{
  margin-top:auto;
  padding:16px 14px;
  background:var(--page);
  border:1px solid var(--line-2);
  border-radius:var(--r-lg);
}
.sidebar-foot-title{
  font-size:13px;
  font-weight:600;
  color:var(--ink);
  margin-bottom:6px;
}
.sidebar-foot-text{
  font-size:12px;
  line-height:1.75;
  color:var(--ink-2);
}

/* ============ 移动端顶栏 ============ */
.mobile-bar{display:none;}
.drawer-mask{
  display:none;
  position:fixed;
  inset:0;
  background:rgba(22,32,43,.42);
  z-index:70;
  opacity:0;
  transition:opacity .24s ease;
}

/* ============ 面包屑 ============ */
.crumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--ink-2);
  padding:26px 0 0;
}
.crumbs a{color:var(--ink-2);}
.crumbs a:hover{color:var(--brand);}
.crumb-sep{color:#B4C1CC;}
.crumb-current{color:var(--ink);font-weight:500;max-width:340px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ============ 文章头部 ============ */
.article-hero{padding-bottom:6px;}
.article-head{max-width:820px;margin:0 auto;padding:26px 0 30px;text-align:left;}
.badge{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 12px;
  border-radius:var(--r-pill);
  font-size:13px;
  line-height:1;
  letter-spacing:.2px;
}
.badge-brand{background:var(--brand-soft);color:var(--brand-deep);}
.badge-brand:hover{background:#D6E6F2;color:var(--brand-deep);}
.badge-amber{background:#FBEFD9;color:var(--amber-deep);}

.article-head h1{
  font-size:34px;
  line-height:1.42;
  font-weight:600;
  color:var(--ink);
  letter-spacing:.2px;
  margin:16px 0 18px;
  word-break:break-word;
}
.article-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:12px;
  font-size:13px;
  color:var(--ink-2);
  font-variant-numeric:tabular-nums;
}
.meta-sep{
  width:1px;
  height:12px;
  background:var(--line);
  display:inline-block;
}
.meta-item em{color:var(--brand);font-weight:600;font-style:normal;}

/* ============ 正文排版 ============ */
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,780px) 216px;
  gap:44px;
  justify-content:center;
  align-items:start;
  padding-bottom:20px;
}
.article-body{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
  padding:40px 44px 46px;
  font-size:17px;
  line-height:1.95;
  color:#20303E;
  word-break:break-word;
  min-width:0;
}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 1.15em;}
.article-body h2{
  position:relative;
  font-size:24px;
  line-height:1.5;
  font-weight:600;
  color:var(--ink);
  margin:2.1em 0 .85em;
  padding-left:16px;
  scroll-margin-top:96px;
}
.article-body h2::before{
  content:"";
  position:absolute;
  left:0;
  top:.28em;
  bottom:.22em;
  width:4px;
  border-radius:3px;
  background:var(--brand);
}
.article-body h3{
  font-size:19px;
  line-height:1.6;
  font-weight:600;
  color:var(--ink);
  margin:1.7em 0 .7em;
}
.article-body h4{
  font-size:17px;
  font-weight:600;
  color:var(--brand-deep);
  margin:1.4em 0 .6em;
}
.article-body ul,.article-body ol{margin:0 0 1.25em;padding-left:1.5em;}
.article-body ul li{list-style:disc;margin-bottom:.55em;}
.article-body ol li{list-style:decimal;margin-bottom:.55em;}
.article-body li::marker{color:var(--brand);}
.article-body blockquote{
  margin:1.6em 0;
  padding:18px 22px;
  background:var(--brand-soft);
  border-left:4px solid var(--brand);
  border-radius:0 var(--r-md) var(--r-md) 0;
  color:var(--brand-deep);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{
  border-radius:var(--r-lg);
  margin:1.5em 0;
  box-shadow:var(--sh-1);
  width:100%;
}
.article-body figure{margin:1.6em 0;}
.article-body figcaption{
  font-size:13px;
  line-height:1.7;
  color:var(--ink-2);
  text-align:center;
  margin-top:10px;
}
.article-body table{
  width:100%;
  border-collapse:collapse;
  margin:1.5em 0;
  font-size:15px;
  line-height:1.7;
  border-radius:var(--r-md);
  overflow:hidden;
}
.article-body th,.article-body td{
  border:1px solid var(--line);
  padding:12px 14px;
  text-align:left;
  vertical-align:top;
}
.article-body th{background:var(--brand-soft);color:var(--brand-deep);font-weight:600;}
.article-body tbody tr:nth-child(even){background:#FAFCFE;}
.article-body a{
  color:var(--brand);
  border-bottom:1px solid rgba(29,92,140,.32);
}
.article-body a:hover{color:var(--brand-deep);border-bottom-color:var(--brand-deep);}
.article-body hr{
  border:0;
  height:1px;
  background:var(--line);
  margin:2em 0;
}
.article-body code{
  background:var(--line-2);
  border-radius:6px;
  padding:2px 6px;
  font-size:.9em;
  color:var(--brand-deep);
}
.article-body strong{color:var(--ink);}

/* ============ 右侧目录 ============ */
.toc-col{
  position:sticky;
  top:32px;
  display:flex;
  flex-direction:column;
  gap:18px;
}
.toc-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:18px 18px 14px;
  box-shadow:var(--sh-1);
}
.toc-title{
  font-size:13px;
  font-weight:600;
  color:var(--ink);
  letter-spacing:.04em;
  padding-bottom:10px;
  margin-bottom:10px;
  border-bottom:1px solid var(--line-2);
}
.toc-list li{margin-bottom:2px;}
.toc-list a{
  display:block;
  font-size:13.5px;
  line-height:1.6;
  color:var(--ink-2);
  padding:7px 10px;
  border-radius:8px;
  border-left:2px solid transparent;
  transition:background .18s ease,color .18s ease,border-color .18s ease;
  overflow:hidden;
  text-overflow:ellipsis;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
}
.toc-list a:hover{
  background:var(--brand-soft);
  color:var(--brand-deep);
  border-left-color:var(--brand);
}
.toc-side-card{
  background:linear-gradient(160deg,#F2F7FB,#E6EFF6);
  border:1px solid #D8E6F1;
  border-radius:var(--r-lg);
  padding:18px;
}
.toc-side-title{
  font-size:14px;
  font-weight:600;
  color:var(--brand-deep);
  margin-bottom:6px;
}
.toc-side-text{
  font-size:13px;
  line-height:1.75;
  color:var(--ink-2);
  margin-bottom:14px;
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 26px;
  border-radius:var(--r-pill);
  font-size:15px;
  font-weight:600;
  letter-spacing:.2px;
  line-height:1;
  border:1px solid transparent;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
  white-space:nowrap;
}
.btn-primary{
  background:var(--brand);
  color:#fff;
  box-shadow:0 6px 18px rgba(29,92,140,.22);
}
.btn-primary:hover{
  background:var(--brand-deep);
  color:#fff;
  transform:translateY(-1px);
  box-shadow:0 10px 24px rgba(29,92,140,.28);
}
.btn-ghost{
  background:transparent;
  color:var(--brand);
  border-color:var(--brand);
  border-radius:var(--r-md);
}
.btn-ghost:hover{
  background:var(--brand-soft);
  color:var(--brand-deep);
  border-color:var(--brand-deep);
}
.btn-sm{height:38px;padding:0 18px;font-size:14px;}
.btn-block{width:100%;}

/* ============ 空态 ============ */
.empty-state{
  text-align:center;
  padding:34px 16px 26px;
}
.empty-icon{
  width:66px;
  height:66px;
  margin:0 auto 18px;
  border-radius:20px;
  background:var(--brand-soft);
  display:flex;
  align-items:center;
  justify-content:center;
  color:var(--brand);
}
.empty-title{
  font-size:19px;
  font-weight:600;
  color:var(--ink);
  margin-bottom:8px;
}
.empty-text{
  font-size:14px;
  color:var(--ink-2);
  margin-bottom:22px;
}

/* ============ 文末标签 ============ */
.article-foot{
  max-width:780px;
  margin:0 auto;
}
.tag-row{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  padding:26px 0 4px;
}
.tag-label{
  font-size:13px;
  color:var(--ink-2);
  margin-right:2px;
}
.tag{
  display:inline-flex;
  align-items:center;
  height:30px;
  padding:0 14px;
  border-radius:var(--r-pill);
  background:var(--surface);
  border:1px solid var(--line);
  font-size:13px;
  color:#405366;
  transition:border-color .18s ease,color .18s ease,background .18s ease;
}
.tag:hover{
  border-color:var(--brand);
  color:var(--brand-deep);
  background:var(--brand-soft);
}

/* ============ 相关推荐 ============ */
.section-block{padding:56px 0 0;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px;
  margin-bottom:26px;
}
.section-head h2{
  font-size:24px;
  font-weight:600;
  line-height:1.45;
  color:var(--ink);
  letter-spacing:.2px;
}
.section-head p{
  font-size:14px;
  color:var(--ink-2);
  margin-top:6px;
}
.section-head .head-link{
  font-size:14px;
  color:var(--brand);
  white-space:nowrap;
}
.section-head .head-link:hover{color:var(--brand-deep);}

.related-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.related-card{
  display:flex;
  flex-direction:column;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  height:100%;
}
.related-card:hover{
  transform:translateY(-2px);
  box-shadow:var(--sh-2);
  border-color:#D3E2EE;
}
.related-thumb{
  position:relative;
  aspect-ratio:4/3;
  background:var(--brand-soft);
  overflow:hidden;
}
.related-thumb img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .35s ease;
}
.related-card:hover .related-thumb img{transform:scale(1.04);}
.related-body{
  padding:18px 20px 20px;
  display:flex;
  flex-direction:column;
  gap:8px;
  flex:1;
}
.related-body h3{
  font-size:17px;
  font-weight:600;
  line-height:1.55;
  color:var(--ink);
}
.related-body p{
  font-size:13.5px;
  line-height:1.75;
  color:var(--ink-2);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.related-more{
  margin-top:auto;
  font-size:13.5px;
  color:var(--brand);
  font-weight:500;
}

/* ============ 返回入口 ============ */
.back-row{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:14px;
  padding:34px 0 0;
  border-top:1px solid var(--line);
  margin-top:54px;
}
.back-row .back-text{
  font-size:14px;
  color:var(--ink-2);
}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:auto;
  background:#EDF1F6;
  border-top:1px solid var(--line);
  padding:56px 0 0;
}
.footer-inner{
  max-width:var(--maxw);
  margin:0 auto;
  padding:0 32px 40px;
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:36px;
}
.footer-logo{
  display:inline-block;
  font-size:18px;
  font-weight:700;
  color:var(--brand-deep);
  letter-spacing:.2px;
  margin-bottom:12px;
}
.footer-brand p{
  font-size:13.5px;
  line-height:1.85;
  color:var(--ink-2);
  max-width:340px;
}
.footer-col h4{
  font-size:14px;
  font-weight:600;
  color:var(--ink);
  margin-bottom:14px;
  letter-spacing:.03em;
}
.footer-col ul li{margin-bottom:9px;}
.footer-col a,
.footer-col p{
  font-size:13.5px;
  line-height:1.7;
  color:var(--ink-2);
}
.footer-col a:hover{color:var(--brand);}
.footer-bottom{
  border-top:1px solid #DEE5ED;
  padding:18px 32px 22px;
  max-width:var(--maxw);
  margin:0 auto;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px;
}
.footer-bottom p{
  font-size:12.5px;
  color:#7A8896;
  line-height:1.7;
}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .article-layout{grid-template-columns:minmax(0,1fr) 200px;gap:32px;}
  .article-body{padding:34px 34px 40px;font-size:16.5px;}
}

@media (max-width:1023px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:0;}
  .toc-col{display:none;}
  .article-body{max-width:780px;margin:0 auto;}
  .article-foot{max-width:780px;}
}

@media (max-width:991px){
  .sidebar{
    width:288px;
    transform:translateX(-104%);
    transition:transform .28s ease;
    box-shadow:0 18px 44px rgba(16,32,48,.16);
    padding-top:20px;
  }
  .sidebar.is-open{transform:translateX(0);}
  .main-area{margin-left:0;}
  .mobile-bar{
    display:flex;
    position:sticky;
    top:0;
    z-index:90;
    height:56px;
    align-items:center;
    justify-content:space-between;
    padding:0 16px;
    background:rgba(255,255,255,.96);
    border-bottom:1px solid var(--line);
    backdrop-filter:saturate(120%) blur(6px);
  }
  .mobile-brand{
    display:flex;
    align-items:center;
    gap:9px;
    min-width:0;
  }
  .mobile-brand .brand-mark{
    width:32px;height:32px;flex:0 0 32px;border-radius:9px;font-size:12.5px;
  }
  .mobile-brand-text{
    font-size:16px;
    font-weight:700;
    color:var(--ink);
    white-space:nowrap;
    overflow:hidden;
    text-overflow:ellipsis;
  }
  .nav-toggle{
    width:40px;
    height:40px;
    border-radius:10px;
    display:flex;
    flex-direction:column;
    align-items:center;
    justify-content:center;
    gap:5px;
    flex:0 0 40px;
    transition:background .18s ease;
  }
  .nav-toggle:hover{background:var(--brand-soft);}
  .nav-toggle span{
    display:block;
    width:19px;
    height:2px;
    border-radius:2px;
    background:var(--brand-deep);
    transition:transform .22s ease,opacity .22s ease;
  }
  .nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
  .nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
  .nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
  .drawer-mask{display:block;pointer-events:none;}
  .drawer-mask.is-open{opacity:1;pointer-events:auto;}
  .container{padding:0 22px;}
  .article-head{padding:22px 0 24px;}
  .article-head h1{font-size:27px;}
  .section-head h2{font-size:22px;}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-inner{grid-template-columns:1fr 1fr;gap:28px;padding-bottom:32px;}
}

@media (max-width:767px){
  .article-body{padding:26px 20px 32px;font-size:16.5px;border-radius:12px;}
  .article-body h2{font-size:21px;}
  .article-body h3{font-size:18px;}
  .crumbs{font-size:12.5px;padding-top:18px;}
  .section-block{padding:40px 0 0;}
  .related-grid{grid-template-columns:minmax(0,1fr);}
  .footer-bottom{flex-direction:column;align-items:flex-start;padding:16px 22px 22px;}
  .back-row{margin-top:38px;padding-top:26px;}
}

@media (max-width:520px){
  .container{padding:0 16px;}
  .article-head h1{font-size:23px;line-height:1.5;}
  .article-meta{gap:8px;font-size:12.5px;}
  .article-body{font-size:16px;line-height:1.9;padding:22px 16px 28px;}
  .article-body h2{font-size:19.5px;padding-left:13px;}
  .article-body h2::before{width:3px;}
  .article-body table{font-size:13.5px;}
  .article-body th,.article-body td{padding:9px 10px;}
  .btn{height:44px;padding:0 20px;font-size:14.5px;}
  .footer-inner{grid-template-columns:minmax(0,1fr);gap:26px;padding:0 16px 28px;}
  .site-footer{padding-top:40px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:8px;}
}

@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category1 */
:root{
  --brand:#1D5C8C;
  --brand-dark:#14445F;
  --brand-light:#E6EFF6;
  --amber:#E8A33D;
  --amber-soft:#FBF1DE;
  --bg:#F6F8FB;
  --card:#FFFFFF;
  --text:#16202B;
  --muted:#5B6B7A;
  --border:#E3E9F0;
  --divider:#EDF1F6;
  --radius-card:14px;
  --radius-input:10px;
  --shadow-1:0 1px 2px rgba(16,32,48,.06),0 8px 24px rgba(16,32,48,.08);
  --shadow-2:0 2px 6px rgba(16,32,48,.08),0 18px 38px rgba(16,32,48,.12);
  --maxw:1040px;
  --serif-num:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.9;
  font-weight:400;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand);text-decoration:none;transition:color .18s ease,background-color .18s ease,border-color .18s ease}
a:hover{color:var(--brand-dark)}
button,input,textarea,select{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
h1,h2,h3,h4{margin:0;font-weight:600;line-height:1.35;color:var(--text)}
p{margin:0 0 1em}
ul,ol{margin:0;padding:0;list-style:none}
figure{margin:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--brand);color:#fff;padding:10px 16px;border-radius:0 0 8px 0;z-index:200}
.skip-link:focus{left:0;color:#fff}

/* ============ 布局骨架 ============ */
.site-shell{display:flex;align-items:flex-start;max-width:1500px;margin:0 auto}
.sidebar{
  width:240px;flex:0 0 240px;align-self:flex-start;position:sticky;top:0;height:100vh;
  background:var(--card);border-right:1px solid var(--border);
  padding:26px 18px 32px;display:flex;flex-direction:column;gap:22px;overflow-y:auto;
}
.main-area{flex:1;min-width:0;padding-bottom:80px}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* ============ 品牌 ============ */
.brand{display:flex;align-items:center;gap:12px;padding:6px 8px 10px;border-bottom:1px solid var(--divider)}
.brand:hover{color:inherit}
.brand-mark{
  width:40px;height:40px;flex:0 0 40px;border-radius:12px;
  background:linear-gradient(150deg,var(--brand),var(--brand-dark));
  color:#fff;display:flex;align-items:center;justify-content:center;font-size:18px;
  box-shadow:0 6px 14px rgba(29,92,140,.28)
}
.brand-text{display:flex;flex-direction:column;min-width:0}
.brand-name{font-size:19px;font-weight:600;color:var(--text);letter-spacing:.2px;line-height:1.3}
.brand-sub{font-size:12px;color:var(--muted);line-height:1.5}

/* ============ 导航 ============ */
.nav-group{display:flex;flex-direction:column;gap:10px}
.nav-label{font-size:12px;color:var(--muted);letter-spacing:.14em;margin:0;padding-left:10px}
.nav-list{display:flex;flex-direction:column;gap:4px}
.nav-link{
  position:relative;display:block;padding:11px 12px 11px 16px;border-radius:10px;
  font-size:15px;color:#2B3A48;transition:background-color .18s ease,color .18s ease,padding-left .18s ease
}
.nav-link::before{
  content:"";position:absolute;left:6px;top:50%;transform:translateY(-50%);
  width:3px;height:0;border-radius:3px;background:var(--brand);transition:height .18s ease
}
.nav-link:hover{background:var(--brand-light);color:var(--brand-dark)}
.nav-link:hover::before{height:16px}
.nav-link.is-active{background:var(--brand-light);color:var(--brand-dark);font-weight:600}
.nav-link.is-active::before{height:20px}
.sidebar-cta{
  margin-top:auto;background:#F9FBFD;border:1px solid var(--border);border-radius:var(--radius-card);
  padding:16px
}
.sidebar-cta p{font-size:13px;color:var(--muted);margin:0 0 12px;line-height:1.7}
.sidebar-cta .btn{width:100%;justify-content:center}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:999px;font-size:15px;font-weight:600;
  border:1px solid transparent;transition:transform .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 18px rgba(29,92,140,.22)}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;color:var(--brand);border-color:var(--brand)}
.btn-ghost:hover{background:var(--brand-light);color:var(--brand-dark);transform:translateY(-1px)}
.btn-amber{background:var(--amber);color:#3A2708;box-shadow:0 8px 18px rgba(232,163,61,.26)}
.btn-amber:hover{background:#D9922C;color:#331F04;transform:translateY(-1px)}
.btn-block{width:100%;border-radius:var(--radius-input)}

/* ============ 移动端顶栏 ============ */
.mobile-bar{
  display:none;align-items:center;justify-content:space-between;gap:12px;
  position:sticky;top:0;z-index:80;background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--border);padding:10px 16px;
}
.mobile-bar .brand-name{font-size:17px}
.nav-toggle{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--border);background:#fff;
  display:flex;align-items:center;justify-content:center;color:var(--brand);font-size:18px
}
.nav-toggle:hover{background:var(--brand-light)}
.mobile-drawer{
  position:fixed;inset:0;z-index:120;background:#fff;padding:20px 20px 40px;
  transform:translateY(-102%);transition:transform .28s ease;overflow-y:auto
}
.mobile-drawer.is-open{transform:translateY(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-close{width:42px;height:42px;border-radius:12px;border:1px solid var(--border);background:#fff;color:var(--brand);font-size:18px}
.drawer-close:hover{background:var(--brand-light)}
.mobile-drawer .nav-link{font-size:16px;padding:14px 14px 14px 18px}
.drawer-foot{margin-top:24px;padding-top:18px;border-top:1px solid var(--divider);font-size:13px;color:var(--muted)}

/* ============ 分类 Hero ============ */
.cat-hero{
  position:relative;padding:34px 0 56px;
  background-image:linear-gradient(180deg,rgba(246,248,251,.95),rgba(246,248,251,.99)),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;border-bottom:1px solid var(--border)
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:26px}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:#B7C4D1}
.breadcrumb .current{color:var(--brand-dark);font-weight:600}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:44px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;background:var(--amber-soft);color:#7A5410;
  font-size:13px;font-weight:600;padding:5px 14px;border-radius:999px;margin-bottom:16px
}
.hero-title{font-size:40px;letter-spacing:-.4px;margin-bottom:16px}
.hero-title span{color:var(--brand)}
.hero-lead{font-size:17px;color:#3D4C5A;margin-bottom:26px;max-width:640px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px}
.chip-row{display:flex;flex-wrap:wrap;gap:10px}
.chip{
  display:inline-flex;align-items:center;gap:7px;background:#fff;border:1px solid var(--border);
  color:#39485A;font-size:13px;border-radius:999px;padding:6px 14px;height:30px
}
.chip i{color:var(--brand);font-size:12px}
.hero-media{
  border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1);position:relative;background:#DCE6EF
}
.hero-media img{width:100%;aspect-ratio:4/3;object-fit:cover}
.hero-media::after{
  content:"";position:absolute;inset:auto 0 0 0;height:38%;
  background:linear-gradient(180deg,rgba(255,255,255,0),rgba(255,255,255,.72))
}

/* ============ 板块 ============ */
.section{padding:76px 0 0}
.section:last-of-type{padding-bottom:0}
.section-head{max-width:760px;margin-bottom:36px}
.section-title{font-size:30px;letter-spacing:-.2px;margin-bottom:12px}
.section-desc{color:var(--muted);font-size:16px;margin:0}
.section--tint{background:#fff;border-top:1px solid var(--border);border-bottom:1px solid var(--border);padding-bottom:76px;margin-top:76px}
.section--tint .section{padding-top:76px}

/* 图文交错 */
.split{align-items:center}
.split-copy h3{font-size:24px;margin-bottom:14px}
.split-copy p{color:#3D4C5A}
.split-media{border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1);background:#DCE6EF;margin-top:22px}
.split-media img{width:100%;aspect-ratio:16/11;object-fit:cover;transition:transform .4s ease}
.split-media:hover img{transform:scale(1.03)}
.split-media figcaption{font-size:13px;color:var(--muted);padding:12px 16px;background:#fff;border-top:1px solid var(--divider)}
.check-list{display:flex;flex-direction:column;gap:12px;margin-top:22px}
.check-list li{display:flex;gap:12px;align-items:flex-start;background:#fff;border:1px solid var(--border);border-radius:12px;padding:14px 16px;box-shadow:0 1px 2px rgba(16,32,48,.04)}
.check-list i{color:var(--brand);margin-top:6px;font-size:14px}
.check-list strong{display:block;font-size:15px;font-weight:600;margin-bottom:2px}
.check-list span{font-size:14px;color:var(--muted);line-height:1.75}

/* 步骤列表 */
.step-list{display:flex;flex-direction:column;gap:14px;margin-top:8px;counter-reset:step}
.step-list li{
  display:flex;gap:16px;align-items:flex-start;background:#fff;border:1px solid var(--border);
  border-radius:12px;padding:16px 18px;box-shadow:0 1px 2px rgba(16,32,48,.05);
  transition:box-shadow .2s ease,transform .2s ease
}
.step-list li:hover{box-shadow:var(--shadow-1);transform:translateY(-2px)}
.step-no{
  flex:0 0 40px;width:40px;height:40px;border-radius:12px;background:var(--brand-light);color:var(--brand-dark);
  display:flex;align-items:center;justify-content:center;font-weight:600;font-size:15px;font-variant-numeric:tabular-nums
}
.step-list h4{font-size:16px;margin-bottom:2px}
.step-list p{font-size:14px;color:var(--muted);margin:0;line-height:1.8}

/* 数据条 */
.stat-row{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:8px}
.stat-card{
  background:#fff;border:1px solid var(--border);border-left:3px solid var(--amber);
  border-radius:12px;padding:22px 20px;box-shadow:0 1px 2px rgba(16,32,48,.05)
}
.stat-value{font-size:30px;font-weight:600;color:var(--brand-dark);font-variant-numeric:tabular-nums;line-height:1.2}
.stat-value small{font-size:14px;color:var(--muted);margin-left:4px;font-weight:400}
.stat-label{font-size:14px;color:var(--muted);margin-top:6px}

/* 卡片组 */
.card-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.info-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  padding:26px;box-shadow:0 1px 2px rgba(16,32,48,.06),0 8px 20px rgba(16,32,48,.05);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease
}
.info-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#D3DFEA}
.card-icon{
  width:46px;height:46px;border-radius:12px;background:var(--brand-light);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-size:18px;margin-bottom:16px
}
.info-card h3{font-size:18px;margin-bottom:8px}
.info-card p{font-size:15px;color:var(--muted);margin:0;line-height:1.85}
.tag-inline{display:inline-block;font-size:12px;color:var(--brand-dark);background:var(--brand-light);border-radius:999px;padding:3px 10px;margin-top:14px}

/* FAQ */
.faq-wrap{max-width:820px;margin:0 auto}
.faq-item{background:#fff;border:1px solid var(--border);border-radius:12px;margin-bottom:12px;overflow:hidden}
.faq-item.is-open{border-color:#CFDDE9;box-shadow:var(--shadow-1)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;text-align:left;font-size:16px;font-weight:600;color:var(--text)
}
.faq-q:hover{color:var(--brand-dark);background:#FAFCFE}
.faq-icon{
  flex:0 0 26px;width:26px;height:26px;border-radius:50%;background:var(--brand-light);color:var(--brand-dark);
  display:flex;align-items:center;justify-content:center;font-size:15px;font-weight:600;transition:transform .24s ease
}
.faq-item.is-open .faq-icon{transform:rotate(45deg)}
.faq-a{padding:0 20px 20px;font-size:15px;color:#3D4C5A;line-height:1.9;border-top:1px solid var(--divider);padding-top:16px}
.faq-a[hidden]{display:none}

/* CTA 面板 */
.cta-panel{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);padding:38px 36px;display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start
}
.cta-panel h2{font-size:28px;margin-bottom:14px}
.cta-panel p{color:var(--muted);font-size:15px}
.cta-points{display:flex;flex-direction:column;gap:10px;margin-top:18px}
.cta-points li{display:flex;gap:10px;align-items:center;font-size:15px;color:#3D4C5A}
.cta-points i{color:var(--amber);font-size:14px}
.cta-form{display:flex;flex-direction:column;gap:16px}
.field{display:flex;flex-direction:column;gap:8px}
.field label{font-size:14px;font-weight:600;color:#2B3A48}
.field input{
  width:100%;height:46px;border:1px solid var(--border);border-radius:var(--radius-input);
  padding:0 14px;background:#FBFCFE;transition:border-color .18s ease,box-shadow .18s ease,background-color .18s ease
}
.field input::placeholder{color:#9AA8B6}
.field input:focus{outline:none;border-color:var(--brand);background:#fff;box-shadow:0 0 0 3px rgba(29,92,140,.14)}
.form-note{font-size:13px;color:var(--muted);margin:0}
.form-feedback{font-size:14px;color:#1B6B45;background:#EAF6EF;border:1px solid #CBE7D8;border-radius:10px;padding:10px 14px;margin:0}

/* 页脚 */
.site-footer{background:#EDF1F6;border-top:1px solid var(--border);margin-top:88px}
.footer-inner{
  max-width:1200px;margin:0 auto;padding:56px 24px 36px;
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px
}
.footer-logo{display:inline-block;font-size:18px;font-weight:600;color:var(--brand-dark);margin-bottom:12px}
.footer-brand p{font-size:14px;color:var(--muted);margin:0;max-width:320px;line-height:1.85}
.footer-col h4{font-size:15px;margin-bottom:14px;color:var(--text)}
.footer-col ul{display:flex;flex-direction:column;gap:9px}
.footer-col a{font-size:14px;color:#455568}
.footer-col a:hover{color:var(--brand)}
.footer-col p{font-size:14px;color:var(--muted);margin:0 0 6px}
.footer-bottom{
  border-top:1px solid #DFE6EE;max-width:1200px;margin:0 auto;padding:18px 24px 28px;
  display:flex;flex-wrap:wrap;gap:8px;justify-content:space-between;font-size:13px;color:#6B7A88
}
.footer-bottom p{margin:0}

/* 响应式 */
@media (max-width:1200px){
  .hero-title{font-size:36px}
}
@media (max-width:1023.98px){
  .hero-grid{grid-template-columns:1fr;gap:30px}
  .hero-title{font-size:32px}
  .stat-row{grid-template-columns:repeat(2,1fr)}
  .cta-panel{grid-template-columns:1fr;gap:28px;padding:30px 26px}
  .footer-inner{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:991.98px){
  .sidebar{display:none}
  .mobile-bar{display:flex}
  .site-shell{display:block}
  .cat-hero{padding:24px 0 44px}
  .section{padding:56px 0 0}
  .section--tint{padding-bottom:56px;margin-top:56px}
  .section--tint .section{padding-top:56px}
}
@media (max-width:767.98px){
  .card-grid{grid-template-columns:1fr}
  .hero-title{font-size:28px}
  .section-title{font-size:24px}
  .split-copy h3{font-size:20px}
  .stat-row{grid-template-columns:repeat(2,1fr);gap:14px}
  .cta-panel h2{font-size:24px}
  .footer-inner{padding-top:44px}
}
@media (max-width:520px){
  .container{padding:0 18px}
  .hero-title{font-size:25px}
  .hero-lead{font-size:16px}
  .btn{width:100%}
  .hero-actions{gap:10px}
  .stat-row{grid-template-columns:1fr}
  .footer-inner{grid-template-columns:1fr;gap:24px}
  .footer-bottom{flex-direction:column}
  .check-list li,.step-list li{padding:14px}
}

/* roulang page: category2 */
:root{
  --brand:#1D5C8C;
  --brand-deep:#14445F;
  --brand-soft:#E6EFF6;
  --amber:#E8A33D;
  --amber-soft:#FBF1DF;
  --bg:#F6F8FB;
  --card:#FFFFFF;
  --text:#16202B;
  --muted:#5B6B7A;
  --line:#E3E9F0;
  --divider:#EDF1F6;
  --radius:14px;
  --radius-lg:20px;
  --radius-sm:10px;
  --shadow:0 1px 2px rgba(16,32,48,.06), 0 8px 24px rgba(16,32,48,.08);
  --shadow-hover:0 2px 6px rgba(16,32,48,.08), 0 16px 36px rgba(16,32,48,.12);
  --pad-x:32px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.9;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--brand-deep)}
button,input,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:600;color:var(--text);letter-spacing:-.01em}
p{margin:0}
.num{font-variant-numeric:tabular-nums}
:focus-visible{outline:3px solid rgba(29,92,140,.38);outline-offset:2px;border-radius:6px}

/* 覆盖 Foundation 默认观感 */
body,a,button{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif}
.grid-margin-x{padding-left:.9375rem;padding-right:.9375rem}
.grid-margin-x.grid-margin-y{margin-top:-.9375rem}
.button,button{background:var(--brand);border-radius:999px}
.button:focus,button:focus{outline:none}

/* 布局骨架 */
.layout{display:flex;align-items:stretch;min-height:100vh;background:var(--bg)}
.content{flex:1 1 auto;min-width:0;display:flex;flex-direction:column}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 var(--pad-x)}

/* 顶部条（移动端） */
.topbar{display:none}
.nav-toggle{
  display:inline-flex;align-items:center;gap:8px;
  background:#fff;color:var(--brand-deep);
  border:1px solid var(--line);border-radius:999px;
  padding:8px 16px;font-size:14px;font-weight:600;cursor:pointer;
  transition:background .18s,border-color .18s;
}
.nav-toggle:hover{background:var(--brand-soft);border-color:#CFE0ED}
.nav-toggle .bars{display:inline-flex;flex-direction:column;gap:3px}
.nav-toggle .bars i{display:block;width:14px;height:2px;border-radius:2px;background:var(--brand)}

/* 左侧竖向导航 */
.sidebar{
  width:240px;flex:0 0 240px;
  background:#fff;
  border-right:1px solid var(--line);
  padding:26px 18px 30px;
  position:sticky;top:0;height:100vh;overflow-y:auto;
  display:flex;flex-direction:column;gap:26px;
}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none}
.brand:hover .brand-name{color:var(--brand)}
.brand-mark{
  flex:0 0 44px;width:44px;height:44px;border-radius:12px;
  background:linear-gradient(150deg,var(--brand),var(--brand-deep));
  color:#fff;font-weight:700;font-size:15px;letter-spacing:.02em;
  display:flex;align-items:center;justify-content:center;
}
.brand-text{display:flex;flex-direction:column;min-width:0}
.brand-name{font-size:18px;font-weight:600;color:var(--brand-deep);line-height:1.35}
.brand-sub{font-size:12px;color:var(--muted);line-height:1.6}
.nav-label{font-size:12px;color:var(--muted);letter-spacing:.08em;margin:0 0 10px}
.nav-list{display:flex;flex-direction:column;gap:4px}
.nav-link{
  display:block;position:relative;
  padding:11px 12px;border-radius:10px;
  font-size:15px;color:var(--text);
  transition:background .18s,color .18s;
}
.nav-link:hover{background:var(--brand-soft);color:var(--brand-deep)}
.nav-link.is-active{background:var(--brand-soft);color:var(--brand-deep);font-weight:600}
.nav-link.is-active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;
  border-radius:3px;background:var(--brand);
}
.sidebar-note{
  margin-top:auto;padding:16px;border-radius:12px;
  background:var(--brand-soft);font-size:13px;color:var(--brand-deep);line-height:1.8;
}
.sidebar-note strong{display:block;font-size:14px;margin-bottom:6px}

/* 通用板块 */
.section{padding:76px 0}
.section-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:40px}
.section-head h2{font-size:30px;line-height:1.45}
.section-head p{margin-top:14px;color:var(--muted);font-size:16px}
.eyebrow{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;margin-bottom:16px;
  border-radius:999px;background:var(--brand-soft);color:var(--brand-deep);
  font-size:13px;font-weight:600;
}
.eyebrow.amber{background:var(--amber-soft);color:#8A5A10}

/* 徽章与按钮 */
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;
  border-radius:999px;font-size:13px;font-weight:600;
  background:var(--brand-soft);color:var(--brand-deep);white-space:nowrap;
}
.badge-amber{background:var(--amber-soft);color:#8A5A10}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 28px;min-height:46px;
  font-size:15px;font-weight:600;cursor:pointer;text-decoration:none;
  border:1px solid transparent;border-radius:999px;
  transition:transform .18s,background .18s,box-shadow .18s,border-color .18s,color .18s;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 18px rgba(29,92,140,.22)}
.btn-primary:hover{background:var(--brand-deep);color:#fff;transform:translateY(-1px);box-shadow:0 12px 24px rgba(29,92,140,.26)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;color:var(--brand);border-color:var(--brand);border-radius:10px}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-deep)}
.btn-block{width:100%}

/* 分类 Hero */
.cat-hero{position:relative;overflow:hidden;background:#fff;border-bottom:1px solid var(--line);padding:52px 0 64px}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background:url("/assets/images/backpic/back-1.webp") center/cover no-repeat;
  opacity:.09;
}
.cat-hero .container{position:relative;z-index:1}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:22px;font-size:13px;color:var(--muted)}
.breadcrumb li{display:flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";color:#C3CDD8}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--brand)}
.hero-grid{display:grid;grid-template-columns:1.3fr .7fr;gap:52px;align-items:center}
.cat-hero h1{font-size:40px;line-height:1.35;margin-bottom:18px}
.hero-lead{font-size:17px;color:var(--muted);max-width:620px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:30px 0 26px}
.hero-trust{display:flex;flex-wrap:wrap;gap:10px}
.hero-visual{margin:0;border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow);background:var(--brand-soft)}
.hero-visual img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .35s ease}
.hero-visual:hover img{transform:scale(1.03)}

/* 概览数据卡 */
.stat-card{
  height:100%;padding:26px 24px;background:var(--card);
  border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);
  transition:transform .2s,box-shadow .2s;
}
.stat-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.stat-num{font-size:32px;font-weight:600;color:var(--brand);line-height:1.2;font-variant-numeric:tabular-nums}
.stat-label{margin-top:6px;font-size:16px;font-weight:600;color:var(--text)}
.stat-card p{margin-top:10px;font-size:14px;color:var(--muted);line-height:1.85}

/* 时间轴 */
.timeline{max-width:920px;position:relative}
.timeline-item{position:relative;display:flex;gap:24px;padding-bottom:28px}
.timeline-item:last-child{padding-bottom:0}
.timeline-item:not(:last-child)::after{
  content:"";position:absolute;left:23px;top:56px;bottom:6px;width:2px;background:var(--line);
}
.timeline-node{
  position:relative;z-index:1;flex:0 0 48px;
  width:48px;height:48px;border-radius:50%;
  background:var(--brand-soft);border:1px solid #CFE0ED;
  color:var(--brand-deep);font-weight:700;font-size:15px;
  display:flex;align-items:center;justify-content:center;
  font-variant-numeric:tabular-nums;
}
.timeline-body{
  flex:1 1 auto;min-width:0;
  padding:24px 28px;background:var(--card);
  border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);
  transition:transform .2s,box-shadow .2s;
}
.timeline-body:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.timeline-body h3{font-size:20px;margin-bottom:10px}
.timeline-body p{color:var(--muted);font-size:15px}
.point-list{margin-top:14px;display:flex;flex-direction:column;gap:8px}
.point-list li{position:relative;padding-left:20px;font-size:14px;color:var(--text);line-height:1.85}
.point-list li::before{
  content:"";position:absolute;left:4px;top:12px;
  width:6px;height:6px;border-radius:50%;background:var(--amber);
}

/* 复核清单 */
.check-wrap{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.check-grid{display:grid;grid-template-columns:1fr;gap:12px}
.check-item{
  display:flex;gap:12px;align-items:flex-start;
  padding:16px 18px;background:var(--card);
  border:1px solid var(--line);border-radius:12px;
  transition:border-color .2s,box-shadow .2s;
}
.check-item:hover{border-color:#CFE0ED;box-shadow:var(--shadow)}
.check-dot{
  flex:0 0 22px;width:22px;height:22px;margin-top:3px;border-radius:50%;
  background:var(--brand-soft);color:var(--brand);
  display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:700;
}
.check-item span{font-size:15px;line-height:1.8}
.check-media{margin:0;border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow);background:var(--brand-soft)}
.check-media img{width:100%;aspect-ratio:16/11;object-fit:cover}

/* 异常处理 */
.note-card{
  height:100%;padding:24px;background:var(--card);
  border:1px solid var(--line);border-left:4px solid var(--amber);
  border-radius:var(--radius);box-shadow:var(--shadow);
  transition:transform .2s,box-shadow .2s;
}
.note-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.note-card h3{font-size:18px;margin-bottom:10px}
.note-card p{font-size:14px;color:var(--muted)}

/* FAQ */
.faq{max-width:820px;margin:0 auto;background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow)}
.faq details{border-bottom:1px solid var(--divider)}
.faq details:last-child{border-bottom:none}
.faq summary{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 26px;font-size:16px;font-weight:600;cursor:pointer;
  list-style:none;transition:background .18s;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{background:#FAFCFE}
.faq summary::after{
  content:"+";flex:0 0 auto;font-size:20px;line-height:1;
  color:var(--brand);transition:transform .22s ease;
}
.faq details[open] summary::after{content:"−";transform:rotate(180deg)}
.faq .faq-answer{padding:0 26px 22px;font-size:15px;line-height:1.9;color:var(--muted)}

/* CTA 面板 */
.cta-panel{
  display:grid;grid-template-columns:1.05fr .95fr;gap:44px;
  padding:44px;background:var(--card);
  border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow);
}
.cta-panel h2{font-size:28px;margin-bottom:14px}
.cta-panel p{color:var(--muted);font-size:15px}
.cta-points{margin-top:22px;display:flex;flex-direction:column;gap:10px}
.cta-points li{position:relative;padding-left:20px;font-size:14px;color:var(--text)}
.cta-points li::before{content:"";position:absolute;left:4px;top:12px;width:6px;height:6px;border-radius:50%;background:var(--brand)}
.field{margin-bottom:16px}
.field label{display:block;font-size:14px;color:var(--muted);margin-bottom:6px}
.field input,.field textarea{
  width:100%;padding:12px 14px;
  background:#FBFCFE;border:1px solid var(--line);border-radius:var(--radius-sm);
  font-size:15px;line-height:1.7;
  transition:border-color .2s,box-shadow .2s,background .2s;
}
.field textarea{min-height:96px;resize:vertical}
.field input:focus,.field textarea:focus{
  outline:none;background:#fff;border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(29,92,140,.14);
}
.form-hint{margin-top:12px;font-size:13px;color:var(--muted);line-height:1.8}

/* 页脚 */
.site-footer{background:#EDF1F6;border-top:1px solid var(--line);padding-top:56px}
.footer-inner{
  max-width:1200px;margin:0 auto;padding:0 var(--pad-x) 42px;
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;
}
.footer-logo{display:inline-block;font-size:19px;font-weight:600;color:var(--brand-deep);margin-bottom:12px}
.footer-brand p{font-size:14px;color:var(--muted);max-width:320px}
.footer-col h4{font-size:15px;margin-bottom:14px;color:var(--brand-deep)}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:var(--muted)}
.footer-col a:hover{color:var(--brand)}
.footer-col p{font-size:14px;color:var(--muted);line-height:1.9}
.footer-bottom{
  max-width:1200px;margin:0 auto;padding:18px var(--pad-x);
  border-top:1px solid #DCE3EB;
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-size:13px;color:var(--muted);
}

/* 响应式 */
@media (max-width:1023px){
  :root{--pad-x:24px}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .cat-hero h1{font-size:32px}
  .hero-visual img{aspect-ratio:16/9}
  .cta-panel{grid-template-columns:1fr;gap:32px;padding:34px}
  .check-wrap{grid-template-columns:1fr;gap:32px}
  .section{padding:62px 0}
}
@media (max-width:991px){
  .topbar{
    display:flex;align-items:center;justify-content:space-between;
    position:sticky;top:0;z-index:60;height:56px;
    padding:0 18px;background:#fff;border-bottom:1px solid var(--line);
  }
  .topbar-brand{font-size:17px;font-weight:600;color:var(--brand-deep)}
  .layout{display:block}
  .sidebar{
    position:fixed;top:56px;left:0;right:0;bottom:0;
    width:100%;height:auto;flex:none;
    border-right:none;border-top:1px solid var(--line);
    padding:22px 18px 40px;
    transform:translateY(-10px);opacity:0;visibility:hidden;pointer-events:none;
    transition:opacity .22s ease,transform .22s ease;
    z-index:55;
  }
  .sidebar.is-open{transform:none;opacity:1;visibility:visible;pointer-events:auto}
  .sidebar-note{margin-top:8px}
  .footer-inner{grid-template-columns:1fr 1fr;gap:30px}
}
@media (max-width:640px){
  :root{--pad-x:18px}
  body{font-size:15px}
  .cat-hero{padding:36px 0 46px}
  .cat-hero h1{font-size:28px}
  .hero-lead{font-size:16px}
  .hero-actions{gap:10px;margin:24px 0 22px}
  .btn{width:100%;padding:13px 20px}
  .section{padding:48px 0}
  .section-head h2{font-size:24px}
  .timeline-item{gap:14px}
  .timeline-node{flex:0 0 38px;width:38px;height:38px;font-size:13px}
  .timeline-item:not(:last-child)::after{left:18px;top:46px}
  .timeline-body{padding:20px}
  .timeline-body h3{font-size:18px}
  .cta-panel{padding:26px 20px}
  .cta-panel h2{font-size:22px}
  .faq summary{padding:17px 18px;font-size:15px}
  .faq .faq-answer{padding:0 18px 20px}
  .footer-inner{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column}
}

/* roulang page: category3 */
:root{
  --brand:#1D5C8C;
  --brand-dark:#14445F;
  --brand-soft:#E6EFF6;
  --amber:#E8A33D;
  --amber-soft:#FCF2E1;
  --bg:#F6F8FB;
  --surface:#FFFFFF;
  --text:#16202B;
  --muted:#5B6B7A;
  --border:#E3E9F0;
  --divider:#EDF1F6;
  --radius:14px;
  --radius-sm:10px;
  --shadow-1:0 1px 2px rgba(16,32,48,.06),0 8px 24px rgba(16,32,48,.08);
  --shadow-2:0 2px 4px rgba(16,32,48,.07),0 14px 34px rgba(16,32,48,.12);
  --sidebar-w:240px;
  --container:1200px;
  --section-gap:88px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.9;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:var(--brand);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--brand-dark)}
p{margin:0 0 1em}
h1,h2,h3,h4{margin:0 0 .55em;font-weight:600;line-height:1.35;color:var(--text);letter-spacing:.2px}
h1{font-size:40px}
h2{font-size:30px}
h3{font-size:20px}
h4{font-size:17px}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit;font-size:inherit;border:0;background:none;color:inherit;cursor:pointer}
input,textarea,select{font-family:inherit;font-size:inherit;color:inherit}
:focus-visible{outline:2px solid var(--brand-dark);outline-offset:2px;border-radius:4px}

.skip-link{position:absolute;left:-9999px;top:0;background:var(--brand);color:#fff;padding:10px 18px;border-radius:0 0 10px 0;z-index:200}
.skip-link:focus{left:0;color:#fff}

/* ---------- 布局骨架 ---------- */
.site-shell{display:grid;grid-template-columns:var(--sidebar-w) minmax(0,1fr);min-height:100vh}
.site-main{min-width:0;display:flex;flex-direction:column}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px}

/* ---------- 左侧竖导航 ---------- */
.site-sidebar{
  background:var(--surface);
  border-right:1px solid var(--border);
  position:sticky;top:0;height:100vh;overflow-y:auto;
  padding:26px 18px 30px;
  display:flex;flex-direction:column;gap:26px;
}
.brand{display:flex;align-items:center;gap:11px;padding:6px 8px 16px;border-bottom:1px solid var(--divider)}
.brand:hover .brand-name{color:var(--brand-dark)}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:11px;
  background:linear-gradient(140deg,var(--brand) 0%,#2C7BB1 100%);
  color:#fff;display:flex;align-items:center;justify-content:center;font-size:16px;
  box-shadow:0 6px 14px rgba(29,92,140,.24);
}
.brand-text{display:flex;flex-direction:column;min-width:0}
.brand-name{font-size:18px;font-weight:600;color:var(--text);letter-spacing:.2px;white-space:nowrap}
.brand-sub{font-size:12px;color:var(--muted);line-height:1.5;margin-top:1px}

.nav-label{font-size:12px;letter-spacing:1.4px;color:var(--muted);text-transform:none;margin:0 0 10px 10px;font-weight:500}
.nav-list{display:flex;flex-direction:column;gap:4px}
.nav-link{
  display:block;position:relative;
  padding:11px 14px 11px 16px;border-radius:var(--radius-sm);
  font-size:15px;color:var(--muted);font-weight:500;
  transition:background-color .18s ease,color .18s ease,padding-left .18s ease;
}
.nav-link::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:0;border-radius:0 3px 3px 0;background:var(--brand);
  transition:height .2s ease;
}
.nav-link:hover{background:#F3F7FB;color:var(--brand-dark);padding-left:18px}
.nav-link:hover::before{height:18px}
.nav-link.is-active{background:var(--brand-soft);color:var(--brand-dark);font-weight:600}
.nav-link.is-active::before{height:22px}

.sidebar-note{
  margin-top:auto;background:#F5F9FC;border:1px solid var(--border);
  border-radius:var(--radius);padding:18px;
}
.sidebar-note-title{font-size:14px;font-weight:600;color:var(--brand-dark);margin-bottom:6px}
.sidebar-note p{font-size:13px;color:var(--muted);line-height:1.75;margin-bottom:14px}

/* ---------- 移动端顶栏与抽屉 ---------- */
.mobile-topbar{
  display:none;align-items:center;gap:12px;
  height:56px;padding:0 16px;
  background:rgba(255,255,255,.97);
  border-bottom:1px solid var(--border);
  position:sticky;top:0;z-index:70;
}
.menu-toggle{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--border);
  display:flex;align-items:center;justify-content:center;color:var(--brand-dark);
  background:#F8FBFD;font-size:16px;
}
.menu-toggle:hover{background:var(--brand-soft)}
.mobile-brand{font-size:16px;font-weight:600;color:var(--text)}
.mobile-brand small{display:block;font-size:11px;color:var(--muted);font-weight:400;line-height:1.3}

.nav-drawer{
  position:fixed;top:0;left:0;bottom:0;width:min(86vw,340px);z-index:90;
  background:var(--surface);border-right:1px solid var(--border);
  padding:22px 18px;overflow-y:auto;
  transform:translateX(-102%);transition:transform .28s ease;
  box-shadow:0 20px 48px rgba(16,32,48,.16);
}
.nav-drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-close{width:34px;height:34px;border-radius:9px;border:1px solid var(--border);color:var(--muted);display:flex;align-items:center;justify-content:center}
.drawer-close:hover{background:var(--brand-soft);color:var(--brand-dark)}
.drawer-mask{
  position:fixed;inset:0;background:rgba(16,32,48,.34);z-index:85;
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer-foot{margin-top:24px;padding-top:18px;border-top:1px solid var(--divider);font-size:13px;color:var(--muted)}
.drawer-foot a{display:block;padding:6px 0}

/* ---------- Hero ---------- */
.page-hero{
  padding:44px 0 68px;
  background:linear-gradient(180deg,#FFFFFF 0%,#F2F7FB 100%);
  border-bottom:1px solid var(--border);
}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:26px;flex-wrap:wrap}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:#B9C5D1}
.breadcrumb .current{color:var(--brand-dark);font-weight:500}

.hero-row{align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--brand-soft);color:var(--brand-dark);
  font-size:13px;font-weight:600;letter-spacing:.4px;
  padding:6px 14px;border-radius:999px;margin-bottom:18px;
}
.eyebrow i{font-size:12px}
.page-hero h1{font-size:40px;line-height:1.3;margin-bottom:16px}
.hero-lead{font-size:17px;color:var(--muted);line-height:1.9;max-width:620px;margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px}
.hero-points{display:flex;flex-wrap:wrap;gap:10px}
.hero-points li{
  display:inline-flex;align-items:center;gap:7px;
  font-size:13px;color:var(--brand-dark);
  background:#fff;border:1px solid var(--border);border-radius:999px;
  padding:6px 14px;box-shadow:0 1px 2px rgba(16,32,48,.04);
}
.hero-points i{color:var(--brand);font-size:12px}

.hero-figure{
  margin:0;border-radius:18px;overflow:hidden;position:relative;
  box-shadow:var(--shadow-1);background:#E9F1F7;
}
.hero-figure img{width:100%;aspect-ratio:16/11;object-fit:cover}
.hero-figure::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:42%;
  background:linear-gradient(180deg,rgba(246,248,251,0) 0%,rgba(246,248,251,.72) 100%);
  pointer-events:none;
}
.hero-figure figcaption{
  position:absolute;left:16px;bottom:14px;z-index:2;
  font-size:13px;color:var(--brand-dark);background:rgba(255,255,255,.86);
  border-radius:999px;padding:5px 14px;
}

/* ---------- 通用板块 ---------- */
.section{padding:var(--section-gap) 0}
.section-alt{background:#FFFFFF;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.section-head{max-width:760px;margin:0 auto 44px;text-align:center}
.section-head.left{text-align:left;margin-left:0}
.section-tag{
  display:inline-block;font-size:12px;letter-spacing:1.6px;font-weight:600;
  color:var(--brand);background:var(--brand-soft);
  padding:5px 13px;border-radius:999px;margin-bottom:14px;
}
.section-head h2{font-size:30px;margin-bottom:12px}
.section-desc{font-size:16px;color:var(--muted);line-height:1.9;margin:0}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;padding:13px 26px;border-radius:999px;
  border:1px solid transparent;cursor:pointer;line-height:1.2;
  transition:transform .18s ease,background-color .18s ease,color .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.btn i{font-size:13px}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 18px rgba(29,92,140,.22)}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:0 12px 24px rgba(29,92,140,.26)}
.btn-primary:active{transform:translateY(0);background:#113A54}
.btn-outline{background:transparent;color:var(--brand);border-color:#BFD5E5}
.btn-outline:hover{background:var(--brand-soft);color:var(--brand-dark);border-color:var(--brand);transform:translateY(-1px)}
.btn-accent{background:var(--amber);color:#3B2A0C;box-shadow:0 8px 18px rgba(232,163,61,.26)}
.btn-accent:hover{background:#D9911F;color:#2E2007;transform:translateY(-1px)}
.btn-sm{padding:9px 18px;font-size:13px}
.btn-block{width:100%}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:24px;padding:0 11px;border-radius:999px;
  font-size:12px;font-weight:600;line-height:1;
}
.badge-brand{background:var(--brand-soft);color:var(--brand-dark)}
.badge-amber{background:var(--amber-soft);color:#8A5B12}
.badge-line{background:#F4F7FA;color:var(--muted);border:1px solid var(--border)}

/* ---------- 功能模块卡片（双列） ---------- */
.module-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
.module-card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  padding:26px;display:flex;gap:18px;
  box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.module-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#D3E0EB}
.module-icon{
  width:46px;height:46px;flex:0 0 46px;border-radius:12px;
  background:var(--brand-soft);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-size:18px;
}
.module-card:nth-child(even) .module-icon{background:var(--amber-soft);color:#A96E15}
.module-body{min-width:0}
.module-body h3{font-size:18px;margin-bottom:8px}
.module-body p{font-size:14px;color:var(--muted);line-height:1.85;margin:0}
.module-meta{display:flex;gap:8px;margin-top:12px;flex-wrap:wrap}

/* ---------- 热点数据 + 高频入口清单 ---------- */
.hot-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;margin-bottom:52px}
.stat-card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  padding:22px;text-align:left;box-shadow:var(--shadow-1);
}
.stat-num{font-size:32px;font-weight:600;color:var(--brand);line-height:1.2;letter-spacing:.5px}
.stat-num span{font-size:15px;color:var(--muted);font-weight:500;margin-left:4px}
.stat-label{font-size:13px;color:var(--muted);margin-top:4px}

.entry-list{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-1)}
.entry-item{
  display:flex;align-items:center;gap:18px;
  padding:20px 26px;border-bottom:1px solid var(--divider);
  transition:background-color .18s ease;
}
.entry-item:last-child{border-bottom:0}
.entry-item:hover{background:#F8FBFD}
.entry-index{
  width:30px;height:30px;flex:0 0 30px;border-radius:9px;
  background:var(--brand-soft);color:var(--brand-dark);
  display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:600;
}
.entry-main{flex:1 1 auto;min-width:0}
.entry-main h4{font-size:16px;margin-bottom:3px}
.entry-main p{font-size:13px;color:var(--muted);margin:0;line-height:1.7}
.entry-side{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.entry-side i{color:#B7C4D1;font-size:13px;transition:transform .18s ease,color .18s ease}
.entry-item:hover .entry-side i{color:var(--brand);transform:translateX(3px)}

/* ---------- 流程步骤 ---------- */
.steps-wrap{
  position:relative;border-radius:22px;overflow:hidden;
  border:1px solid var(--border);
  background:#F4F8FC;
  padding:52px 44px;
}
.steps-bg{position:absolute;inset:0;opacity:.16;background-size:cover;background-position:center}
.steps-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(244,248,252,.72) 0%,rgba(244,248,252,.94) 100%)}
.steps-inner{position:relative;z-index:2}
.steps-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;margin-top:36px}
.step-card{
  background:rgba(255,255,255,.94);border:1px solid var(--border);border-radius:var(--radius);
  padding:24px;box-shadow:var(--shadow-1);position:relative;
  transition:transform .2s ease,box-shadow .2s ease;
}
.step-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:50%;
  background:var(--brand);color:#fff;font-size:14px;font-weight:600;
  margin-bottom:14px;box-shadow:0 6px 14px rgba(29,92,140,.24);
}
.step-card h3{font-size:17px;margin-bottom:8px}
.step-card p{font-size:14px;color:var(--muted);line-height:1.85;margin:0}

/* ---------- FAQ ---------- */
.faq-accordion{
  max-width:820px;margin:0 auto;background:var(--surface);
  border:1px solid var(--border);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow-1);
}
.faq-accordion .accordion-item{border-bottom:1px solid var(--divider)}
.faq-accordion .accordion-item:last-child{border-bottom:0}
.faq-accordion .accordion-title{
  display:block;background:transparent;border:0;margin:0;
  padding:20px 58px 20px 24px;position:relative;
  font-size:16px;font-weight:600;color:var(--text);line-height:1.7;
  transition:background-color .18s ease,color .18s ease;
}
.faq-accordion .accordion-title:hover{background:#F5F9FC;color:var(--brand-dark)}
.faq-accordion .accordion-title::before{
  content:"";position:absolute;right:26px;top:50%;width:13px;height:2px;
  background:var(--brand);border-radius:2px;transform:translateY(-50%);
}
.faq-accordion .accordion-title::after{
  content:"";position:absolute;right:31px;top:50%;width:2px;height:13px;
  background:var(--brand);border-radius:2px;transform:translateY(-50%);
  transition:transform .24s ease,opacity .24s ease;
}
.faq-accordion .accordion-title[aria-expanded="true"]{background:#F5F9FC;color:var(--brand-dark)}
.faq-accordion .accordion-title[aria-expanded="true"]::after{transform:translateY(-50%) rotate(90deg);opacity:0}
.faq-accordion .accordion-content{
  border:0;background:#FBFDFE;
  padding:0 24px 22px;font-size:15px;color:var(--muted);line-height:1.9;
}
.faq-accordion .accordion-content p:last-child{margin-bottom:0}
.faq-accordion .accordion-content ul{padding-left:0;margin-top:8px}
.faq-accordion .accordion-content li{position:relative;padding-left:18px;font-size:14px;line-height:1.85;margin-bottom:6px}
.faq-accordion .accordion-content li::before{
  content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;background:#B7D0E2;
}

/* ---------- CTA 面板 ---------- */
.cta-panel{
  background:linear-gradient(135deg,#F3F8FC 0%,#E6EFF6 100%);
  border:1px solid #D6E4EF;border-radius:22px;
  padding:44px;
  display:grid;grid-template-columns:minmax(0,1fr) 380px;gap:40px;
  align-items:start;
}
.cta-copy h2{font-size:28px;margin-bottom:12px}
.cta-copy p{font-size:15px;color:var(--muted);line-height:1.9}
.cta-list{margin-top:22px;display:flex;flex-direction:column;gap:10px}
.cta-list li{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:#3D4E5C}
.cta-list i{color:var(--brand);font-size:13px;margin-top:6px}

.form-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow-1)}
.form-card h3{font-size:18px;margin-bottom:6px}
.form-card .form-tip{font-size:13px;color:var(--muted);margin-bottom:18px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;font-weight:600;color:#3D4E5C;margin-bottom:7px}
.field input,.field textarea{
  width:100%;background:#FBFDFE;border:1px solid var(--border);
  border-radius:var(--radius-sm);padding:12px 14px;font-size:15px;line-height:1.6;
  transition:border-color .2s ease,box-shadow .2s ease,background-color .2s ease;
}
.field textarea{min-height:96px;resize:vertical}
.field input:hover,.field textarea:hover{border-color:#CBD9E5}
.field input:focus,.field textarea:focus{
  outline:none;background:#fff;border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(29,92,140,.12);
}
.form-note{font-size:12px;color:var(--muted);line-height:1.7;margin:12px 0 0}

/* ---------- 页脚 ---------- */
.site-footer{background:#EDF1F6;border-top:1px solid var(--border);margin-top:auto}
.footer-inner{
  max-width:var(--container);margin:0 auto;padding:56px 32px 36px;
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:34px;
}
.footer-logo{display:inline-block;font-size:18px;font-weight:600;color:var(--brand-dark);margin-bottom:12px}
.footer-brand p{font-size:13.5px;color:var(--muted);line-height:1.85;margin:0}
.footer-col h4{font-size:15px;margin-bottom:14px;color:var(--text)}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:var(--muted)}
.footer-col a:hover{color:var(--brand)}
.footer-col p{font-size:13.5px;color:var(--muted);margin:0 0 8px;line-height:1.8}
.footer-bottom{
  border-top:1px solid #DEE5EC;
  max-width:var(--container);margin:0 auto;padding:18px 32px;
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
}
.footer-bottom p{font-size:13px;color:#7A8A98;margin:0}

/* ---------- 动效偏好 ---------- */
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important}
}

/* ---------- 响应式 ---------- */
@media (max-width:1180px){
  .hot-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .steps-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-panel{grid-template-columns:minmax(0,1fr) 340px;gap:30px;padding:36px}
}
@media (max-width:1023px){
  .site-shell{grid-template-columns:1fr}
  .site-sidebar{display:none}
  .mobile-topbar{display:flex}
  .container{padding:0 24px}
  .page-hero{padding:34px 0 52px}
  .page-hero h1{font-size:32px}
  .hero-lead{font-size:16px}
  .hero-figure{margin-top:28px}
  :root{--section-gap:64px}
  .module-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-inner{grid-template-columns:1fr 1fr;padding:44px 24px 30px;gap:28px}
  .footer-bottom{padding:16px 24px}
}
@media (max-width:767px){
  body{font-size:16px;line-height:1.88}
  h1{font-size:32px}
  h2{font-size:24px}
  .page-hero h1{font-size:29px}
  .page-hero h1 br{display:none}
  .section-head{margin-bottom:32px}
  .module-grid{grid-template-columns:1fr}
  .steps-wrap{padding:34px 22px}
  .steps-grid{grid-template-columns:1fr}
  .hot-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
  .entry-item{padding:16px 18px;gap:14px}
  .entry-side .badge{display:none}
  .cta-panel{grid-template-columns:1fr;padding:28px 22px;gap:26px}
  .form-card{padding:22px}
  .faq-accordion .accordion-title{padding:17px 50px 17px 18px;font-size:15px}
  .faq-accordion .accordion-content{padding:0 18px 18px;font-size:14.5px}
}
@media (max-width:520px){
  .container{padding:0 18px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .hot-grid{grid-template-columns:1fr}
  .footer-inner{grid-template-columns:1fr;padding:36px 18px 24px}
  .footer-bottom{flex-direction:column;padding:14px 18px;gap:6px}
  .brand-name{font-size:17px}
  .hero-figure figcaption{font-size:12px;left:12px;bottom:10px}
}