/* roulang page: index */
:root{
  --c-primary:#1657B8;
  --c-primary-dark:#0E3E86;
  --c-primary-soft:#E8F0FB;
  --c-accent:#00A88A;
  --c-accent-dark:#008C73;
  --c-warm:#F2A33C;
  --c-bg:#F5F8FC;
  --c-card:#FFFFFF;
  --c-line:#E4EBF5;
  --c-title:#0E1B2E;
  --c-body:#4A5A70;
  --c-muted:#8496AD;
  --r-card:16px;
  --r-btn:10px;
  --r-img:14px;
  --sh-card:0 10px 30px rgba(16,60,120,.07);
  --sh-hover:0 16px 40px rgba(16,60,120,.12);
  --t-fast:200ms ease-out;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;
  background:var(--c-bg);
  color:var(--c-body);
  font-size:16px;
  line-height:1.85;
  letter-spacing:0;
}
h1,h2,h3,h4{margin:0;color:var(--c-title);letter-spacing:0;line-height:1.35;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
a{color:var(--c-primary);text-decoration:none;transition:color var(--t-fast);}
a:hover{color:var(--c-primary-dark);}
img{max-width:100%;display:block;border-radius:var(--r-img);}
button,input,textarea{font:inherit;color:inherit;}
button{cursor:pointer;border:none;background:none;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
.section{padding:96px 0;}
.section-tight{padding:64px 0;}
.sec-head{margin-bottom:40px;max-width:720px;}
.sec-head h2{font-size:clamp(22px,2.6vw,30px);font-weight:600;margin-bottom:12px;}
.sec-head p{font-size:15px;color:var(--c-muted);}
.sec-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;}
.sec-head-row h2{font-size:clamp(22px,2.6vw,30px);font-weight:600;margin-bottom:8px;}
.sec-head-row p{font-size:15px;color:var(--c-muted);}
.eyebrow{display:inline-block;font-size:13px;font-weight:600;color:var(--c-primary);background:var(--c-primary-soft);border-radius:999px;padding:5px 14px;margin-bottom:16px;letter-spacing:.02em;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--c-line);
  backdrop-filter:saturate(180%) blur(6px);
}
.nav-wrap{display:flex;align-items:center;gap:24px;height:68px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:24px;height:24px;border-radius:7px;background:var(--c-primary);
  display:flex;align-items:center;justify-content:center;flex-shrink:0;
}
.brand-mark svg{width:14px;height:14px;stroke:#fff;stroke-width:2;fill:none;stroke-linecap:round;stroke-linejoin:round;}
.brand-text{font-size:16px;font-weight:600;color:var(--c-title);white-space:nowrap;}
.brand:hover .brand-text{color:var(--c-primary);}
.main-nav{display:flex;align-items:center;gap:28px;margin-left:8px;}
.nav-link{
  position:relative;font-size:15px;color:var(--c-body);padding:22px 0;font-weight:500;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--c-primary);
  transform:scaleX(0);transform-origin:left;transition:transform var(--t-fast);
}
.nav-link:hover{color:var(--c-primary);}
.nav-link:hover::after{transform:scaleX(1);height:1px;}
.nav-link.active{color:var(--c-primary);}
.nav-link.active::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}
.nav-search{position:relative;}
.nav-search input{
  width:200px;height:40px;border-radius:var(--r-btn);border:1px solid var(--c-line);
  background:var(--c-bg);padding:0 14px 0 38px;font-size:14px;color:var(--c-title);
  transition:border-color var(--t-fast),box-shadow var(--t-fast),background var(--t-fast);
}
.nav-search input::placeholder{color:var(--c-muted);}
.nav-search input:focus{outline:none;background:#fff;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(22,87,184,.14);}
.nav-search svg{position:absolute;left:12px;top:50%;transform:translateY(-50%);width:15px;height:15px;stroke:var(--c-muted);stroke-width:2;fill:none;}
.menu-toggle{
  display:none;width:40px;height:40px;border-radius:var(--r-btn);border:1px solid var(--c-line);
  background:#fff;align-items:center;justify-content:center;
}
.menu-toggle span{display:block;width:16px;height:2px;background:var(--c-title);position:relative;}
.menu-toggle span::before,.menu-toggle span::after{content:"";position:absolute;left:0;width:16px;height:2px;background:var(--c-title);}
.menu-toggle span::before{top:-5px;}
.menu-toggle span::after{top:5px;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
  border:1px solid transparent;transition:all var(--t-fast);white-space:nowrap;
}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn-primary{background:var(--c-primary);color:#fff;}
.btn-primary:hover{background:#134EAB;color:#fff;transform:translateY(-1px);box-shadow:0 8px 20px rgba(22,87,184,.24);}
.btn-primary:active{transform:translateY(0);}
.btn-accent{background:var(--c-accent);color:#fff;}
.btn-accent:hover{background:var(--c-accent-dark);color:#fff;transform:translateY(-1px);box-shadow:0 8px 20px rgba(0,168,138,.25);}
.btn-accent:active{transform:translateY(0);}
.btn-outline{background:#fff;border-color:var(--c-line);color:var(--c-primary);}
.btn-outline:hover{background:var(--c-primary-soft);border-color:#C9DBF3;color:var(--c-primary-dark);}
.btn-link{display:inline-flex;align-items:center;gap:6px;color:var(--c-primary);font-weight:600;font-size:15px;height:auto;padding:0;}
.btn-link svg{width:14px;height:14px;stroke:currentColor;stroke-width:2;fill:none;transition:transform var(--t-fast);}
.btn-link:hover svg{transform:translateX(3px);}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;background:#fff;border-bottom:1px solid var(--c-line);}
.hero::before{
  content:"";position:absolute;top:-180px;right:-120px;width:640px;height:640px;border-radius:50%;
  background:radial-gradient(circle,rgba(22,87,184,.10) 0%,rgba(22,87,184,0) 68%);
  pointer-events:none;
}
.hero-grid{position:relative;display:grid;grid-template-columns:1.02fr 1fr;gap:56px;align-items:center;padding:88px 0 80px;}
.hero-copy .eyebrow{margin-bottom:18px;}
.hero h1{font-size:clamp(28px,4vw,44px);font-weight:700;line-height:1.25;margin-bottom:18px;}
.hero-sub{font-size:17px;color:var(--c-body);margin-bottom:28px;max-width:520px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:28px;}
.hero-chips{display:flex;flex-wrap:wrap;gap:10px;}
.hero-chips li{
  font-size:13px;font-weight:500;color:var(--c-primary-dark);background:var(--c-primary-soft);
  border-radius:999px;padding:6px 14px;
}
.hero-chips li:nth-child(3){color:#8A5A11;background:#FDF2E1;}
.hero-media{border-radius:18px;overflow:hidden;border:1px solid var(--c-line);box-shadow:var(--sh-card);}
.hero-media img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:0;}

/* ---------- feature cards ---------- */
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.card{
  background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-card);transition:box-shadow var(--t-fast),transform var(--t-fast);
}
.card:hover{box-shadow:var(--sh-hover);transform:translateY(-2px);}
.text-card{border-left:4px solid var(--c-primary);border-radius:12px;}
.text-card h3{font-size:18px;font-weight:600;margin-bottom:10px;}
.text-card p{font-size:15px;color:var(--c-body);}
.text-card .num{font-size:13px;font-weight:700;color:var(--c-warm);letter-spacing:.04em;display:block;margin-bottom:8px;}

/* ---------- stats band ---------- */
.stats{background:#fff;border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);}
.stat{padding:36px 24px;text-align:center;border-left:1px solid var(--c-line);}
.stat:first-child{border-left:none;}
.stat-num{
  font-size:clamp(30px,3vw,34px);font-weight:600;color:var(--c-primary);
  font-variant-numeric:tabular-nums;line-height:1.2;margin-bottom:6px;letter-spacing:.01em;
}
.stat-label{font-size:14px;color:var(--c-muted);}

/* ---------- case cards ---------- */
.img-card{background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-card);transition:box-shadow var(--t-fast),transform var(--t-fast);display:flex;flex-direction:column;}
.img-card:hover{box-shadow:var(--sh-hover);transform:translateY(-2px);}
.img-card-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0;}
.img-card-body{padding:24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.img-card-body h3{font-size:18px;font-weight:600;}
.img-card-body p{font-size:15px;color:var(--c-body);}
.badge{
  display:inline-block;font-size:12px;font-weight:600;color:var(--c-primary-dark);
  background:var(--c-primary-soft);border-radius:999px;padding:3px 12px;line-height:1.6;
}
.badge-accent{color:#045F51;background:#E0F5F0;}

/* ---------- alternating plan rows ---------- */
.plan-row{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
.plan-row + .plan-row{margin-top:64px;}
.plan-row.reverse .plan-media{order:2;}
.plan-row.reverse .plan-copy{order:1;}
.plan-media{border-radius:var(--r-card);overflow:hidden;border:1px solid var(--c-line);box-shadow:var(--sh-card);}
.plan-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0;}
.plan-copy h3{font-size:20px;font-weight:600;margin-bottom:14px;}
.plan-copy p{font-size:16px;color:var(--c-body);margin-bottom:18px;}
.plan-list li{position:relative;padding-left:22px;font-size:15px;color:var(--c-body);margin-bottom:10px;}
.plan-list li::before{
  content:"";position:absolute;left:0;top:11px;width:8px;height:8px;border-radius:2px;
  background:var(--c-primary-soft);border:2px solid var(--c-primary);
}

/* ---------- news ---------- */
.news-layout{display:grid;grid-template-columns:1.05fr 1fr;gap:32px;align-items:start;}
.news-lead{display:flex;flex-direction:column;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-card);transition:box-shadow var(--t-fast),transform var(--t-fast);}
.news-lead:hover{box-shadow:var(--sh-hover);transform:translateY(-2px);}
.news-lead-media img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:0;}
.news-lead-body{padding:24px;display:flex;flex-direction:column;gap:12px;}
.news-lead-body h3{font-size:20px;font-weight:600;line-height:1.45;}
.news-lead-body h3 a{color:var(--c-title);}
.news-lead-body h3 a:hover{color:var(--c-primary);}
.news-lead-body p{font-size:15px;color:var(--c-body);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--c-muted);}
.meta-row .dot{width:1px;height:12px;background:var(--c-line);}
.news-list{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-card);}
.news-item{display:flex;align-items:flex-start;gap:16px;padding:20px 24px;border-bottom:1px solid var(--c-line);transition:background var(--t-fast);}
.news-item:last-child{border-bottom:none;}
.news-item:hover{background:var(--c-primary-soft);}
.news-item-main{flex:1;min-width:0;}
.news-item-main h4{font-size:16px;font-weight:600;margin-bottom:6px;line-height:1.5;}
.news-item-main h4 a{color:var(--c-title);}
.news-item:hover .news-item-main h4 a{color:var(--c-primary);}
.news-item-main p{font-size:14px;color:var(--c-muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.news-item-side{flex-shrink:0;text-align:right;font-size:13px;color:var(--c-muted);display:flex;flex-direction:column;gap:6px;align-items:flex-end;}
.empty-state{
  background:var(--c-bg);border:1px dashed #CBD8E9;border-radius:var(--r-card);
  padding:48px 24px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:16px;
}
.empty-state p{font-size:15px;color:var(--c-muted);}

/* ---------- faq ---------- */
.faq{background:#fff;border:1px solid var(--c-line);border-radius:8px;overflow:hidden;box-shadow:var(--sh-card);}
.faq-item{border-bottom:1px solid var(--c-line);}
.faq-item:last-child{border-bottom:none;}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;font-size:16px;font-weight:600;color:var(--c-title);text-align:left;
  transition:color var(--t-fast),background var(--t-fast);
}
.faq-q:hover{color:var(--c-primary);background:#FBFCFE;}
.faq-q svg{width:14px;height:14px;stroke:var(--c-muted);stroke-width:2;fill:none;transition:transform var(--t-fast);flex-shrink:0;}
.faq-item.open .faq-q{color:var(--c-primary);}
.faq-item.open .faq-q svg{transform:rotate(180deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height var(--t-fast);}
.faq-a-inner{padding:0 24px 22px;font-size:15px;color:var(--c-body);}

/* ---------- contact ---------- */
.contact-wrap{display:grid;grid-template-columns:1fr 1.1fr;gap:48px;align-items:start;}
.contact-info h2{font-size:clamp(22px,2.6vw,30px);font-weight:600;margin-bottom:14px;}
.contact-info p{font-size:15px;color:var(--c-body);margin-bottom:22px;max-width:420px;}
.contact-points li{display:flex;gap:12px;align-items:flex-start;font-size:15px;margin-bottom:14px;color:var(--c-body);}
.contact-points .k{font-weight:600;color:var(--c-title);min-width:76px;flex-shrink:0;}
.form-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);padding:32px;box-shadow:var(--sh-card);}
.field{margin-bottom:18px;}
.field label{display:block;font-size:14px;font-weight:600;color:var(--c-title);margin-bottom:8px;}
.field input,.field textarea{
  width:100%;background:var(--c-bg);border:1px solid var(--c-line);border-radius:var(--r-btn);
  padding:0 14px;height:46px;font-size:15px;color:var(--c-title);
  transition:border-color var(--t-fast),box-shadow var(--t-fast),background var(--t-fast);
}
.field textarea{height:104px;padding:12px 14px;resize:vertical;line-height:1.7;}
.field input:focus,.field textarea:focus{outline:none;background:#fff;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(22,87,184,.14);}
.field.error input,.field.error textarea{border-color:#D64545;box-shadow:0 0 0 3px rgba(214,69,69,.12);}
.field .tip{display:none;font-size:12px;color:#C93B3B;margin-top:6px;}
.field.error .tip{display:block;}
.form-note{font-size:13px;color:var(--c-muted);margin-top:12px;}

/* ---------- footer ---------- */
.site-footer{background:#0E1B2E;color:#C7D4E6;padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{background:var(--c-accent);}
.footer-brand span{color:#fff;font-size:16px;font-weight:600;}
.site-footer p{font-size:14px;color:#93A6BF;line-height:1.8;}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:18px;}
.footer-col li{margin-bottom:12px;}
.footer-col a{color:#A9BBD3;font-size:14px;}
.footer-col a:hover{color:#fff;text-decoration:underline;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.10);padding:22px 0 28px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:#8A9DB6;
}

/* ---------- drawer ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(14,27,46,.4);opacity:0;visibility:hidden;
  transition:opacity var(--t-fast),visibility var(--t-fast);z-index:80;
}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:300px;max-width:86vw;background:#fff;z-index:90;
  transform:translateX(100%);transition:transform 240ms ease-out;padding:24px 20px;overflow-y:auto;
  box-shadow:-10px 0 40px rgba(14,27,46,.18);
}
body.drawer-open .drawer{transform:translateX(0);}
body.drawer-open .drawer-mask{opacity:1;visibility:visible;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px;}
.drawer-head .brand-text{font-size:15px;}
.drawer-close{width:34px;height:34px;border-radius:8px;border:1px solid var(--c-line);display:flex;align-items:center;justify-content:center;font-size:18px;color:var(--c-muted);}
.drawer-nav a{display:block;padding:14px 4px;border-bottom:1px solid var(--c-line);color:var(--c-body);font-size:15px;font-weight:500;}
.drawer-nav a.active{color:var(--c-primary);font-weight:600;}
.drawer-search{margin:20px 0;position:relative;}
.drawer-search input{width:100%;height:42px;border-radius:var(--r-btn);border:1px solid var(--c-line);background:var(--c-bg);padding:0 14px;font-size:14px;}
.drawer-actions{display:flex;flex-direction:column;gap:12px;margin-top:8px;}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  .container{padding:0 24px;}
  .section{padding:72px 0;}
  .main-nav,.nav-search{display:none;}
  .menu-toggle{display:flex;}
  .hero-grid{grid-template-columns:1fr;gap:36px;padding:56px 0 64px;}
  .grid-4{grid-template-columns:repeat(2,1fr);}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .news-layout{grid-template-columns:1fr;}
  .contact-wrap{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .stats-grid{grid-template-columns:repeat(2,1fr);}
  .stat:nth-child(3){border-left:none;}
  .stat{border-top:1px solid var(--c-line);}
  .stat:nth-child(1),.stat:nth-child(2){border-top:none;}
  .plan-row{grid-template-columns:1fr;gap:28px;}
  .plan-row.reverse .plan-media{order:1;}
  .plan-row.reverse .plan-copy{order:2;}
}
@media (max-width:639px){
  .container{padding:0 20px;}
  .section{padding:48px 0;}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr;}
  .hero h1{font-size:28px;}
  .hero-media img{height:220px;aspect-ratio:auto;}
  .sec-head-row{flex-direction:column;align-items:flex-start;gap:12px;}
  .news-item{flex-direction:column;gap:10px;}
  .news-item-side{flex-direction:row;align-items:center;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .btn{width:100%;}
  .hero-actions .btn,.contact-points .btn{width:100%;}
  .stats-grid{grid-template-columns:1fr 1fr;}
  .stat{padding:26px 16px;}
}

/* roulang page: article */
/* ===== 设计变量 ===== */
:root{
  --c-primary:#1657B8;
  --c-primary-dark:#0E3E86;
  --c-primary-hover:#12499E;
  --c-primary-soft:#E8F0FB;
  --c-accent:#00A88A;
  --c-accent-dark:#00846D;
  --c-warm:#F2A33C;
  --c-bg:#F5F8FC;
  --c-card:#FFFFFF;
  --c-line:#E4EBF5;
  --c-title:#0E1B2E;
  --c-text:#4A5A70;
  --c-muted:#8496AD;
  --r-card:16px;
  --r-btn:10px;
  --r-img:14px;
  --sh-card:0 10px 30px rgba(16,60,120,.07);
  --sh-card-hover:0 16px 40px rgba(16,60,120,.12);
  --ease:200ms ease-out;
}
/* ===== 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","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--c-text);
  background:var(--c-bg);
}
img{max-width:100%;display:block}
a{color:var(--c-primary)}
button,input,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--c-title);letter-spacing:0}
p{margin:0}
ul,ol{margin:0}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px}
::selection{background:rgba(22,87,184,.16)}
/* ===== 容器 ===== */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
/* ===== 顶部导航 ===== */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--c-line)}
.header-inner{height:68px;display:flex;align-items:center;gap:20px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;flex:none}
.brand-mark{width:26px;height:26px;border-radius:8px;background:var(--c-primary);display:grid;place-items:center;flex:none}
.brand-mark svg{width:15px;height:15px;fill:none;stroke:#fff;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.brand-text{font-size:17px;font-weight:600;color:var(--c-title);white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:28px;margin-left:8px}
.nav-link{position:relative;font-size:15px;color:#3B4B62;text-decoration:none;padding:6px 0;transition:color var(--ease)}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;background:transparent;transition:background var(--ease),opacity var(--ease)}
.nav-link:hover{color:var(--c-primary)}
.nav-link:hover::after{background:var(--c-primary);opacity:.45}
.nav-link.active{color:var(--c-primary);font-weight:600}
.nav-link.active::after{background:var(--c-primary);opacity:1}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.search-box{width:200px;height:40px;border-radius:var(--r-btn);background:#F2F6FC;border:1px solid transparent;display:flex;align-items:center;gap:8px;padding:0 12px;transition:border-color var(--ease),box-shadow var(--ease),background var(--ease)}
.search-box svg{width:16px;height:16px;fill:none;stroke:var(--c-muted);stroke-width:1.8;stroke-linecap:round;flex:none}
.search-box input{border:0;background:transparent;outline:none;font-size:14px;width:100%;color:var(--c-title)}
.search-box input::placeholder{color:var(--c-muted)}
.search-box:focus-within{border-color:var(--c-primary);background:#fff;box-shadow:0 0 0 3px rgba(22,87,184,.14)}
/* ===== 按钮 ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:42px;padding:0 20px;border-radius:var(--r-btn);font-size:15px;font-weight:600;text-decoration:none;border:1px solid transparent;cursor:pointer;transition:background var(--ease),color var(--ease),transform var(--ease),box-shadow var(--ease),border-color var(--ease);white-space:nowrap}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.45;cursor:not-allowed}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-primary-hover);transform:translateY(-1px);box-shadow:0 8px 20px rgba(16,60,120,.18)}
.btn-accent{background:var(--c-accent);color:#fff}
.btn-accent:hover{background:var(--c-accent-dark);transform:translateY(-1px);box-shadow:0 8px 20px rgba(0,132,109,.2)}
.btn-ghost{background:#fff;color:var(--c-primary);border-color:#C9DBF3}
.btn-ghost:hover{background:var(--c-primary-soft);transform:translateY(-1px)}
.btn-ghost-light{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.4)}
.btn-ghost-light:hover{background:rgba(255,255,255,.22);transform:translateY(-1px)}
.btn-link{display:inline-flex;align-items:center;gap:6px;color:var(--c-primary);font-weight:600;font-size:15px;text-decoration:none}
.btn-link span.arrow{transition:transform var(--ease)}
.btn-link:hover span.arrow{transform:translateX(2px)}
.btn-sm{height:36px;padding:0 16px;font-size:14px}
/* ===== 汉堡与抽屉 ===== */
.nav-toggle{display:none;width:42px;height:42px;border-radius:var(--r-btn);border:1px solid var(--c-line);background:#fff;align-items:center;justify-content:center;cursor:pointer}
.nav-toggle svg{width:20px;height:20px;fill:none;stroke:var(--c-title);stroke-width:1.8;stroke-linecap:round}
.nav-overlay{position:fixed;inset:0;background:rgba(14,27,46,.4);opacity:0;visibility:hidden;transition:opacity var(--ease),visibility var(--ease);z-index:70}
.nav-overlay.open{opacity:1;visibility:visible}
.nav-drawer{position:fixed;top:0;right:0;width:290px;max-width:86vw;height:100%;background:#fff;z-index:80;padding:24px;overflow-y:auto;transform:translateX(100%);transition:transform 250ms ease-out;box-shadow:-12px 0 40px rgba(14,27,46,.16)}
.nav-drawer.open{transform:translateX(0)}
.drawer-title{font-size:13px;color:var(--c-muted);margin:20px 0 10px}
.drawer-nav{display:flex;flex-direction:column;gap:4px}
.drawer-nav a{padding:11px 12px;border-radius:10px;font-size:15px;color:#3B4B62;text-decoration:none;transition:background var(--ease),color var(--ease)}
.drawer-nav a:hover,.drawer-nav a.active{background:var(--c-primary-soft);color:var(--c-primary)}
.drawer-search{width:100%;height:44px;border-radius:var(--r-btn);background:#F2F6FC;border:1px solid var(--c-line);padding:0 12px;margin-bottom:14px}
.drawer-actions{display:flex;flex-direction:column;gap:10px;margin-top:20px}
.drawer-actions .btn{width:100%}
/* ===== 文章头部 ===== */
.article-hero{position:relative;background:#fff;border-bottom:1px solid var(--c-line);padding:22px 0 36px;overflow:hidden}
.article-hero::before{content:"";position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.webp');background-size:cover;background-position:center;opacity:.07;pointer-events:none}
.article-hero::after{content:"";position:absolute;top:-120px;right:-80px;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(22,87,184,.10),rgba(22,87,184,0) 70%);pointer-events:none}
.article-hero .container{position:relative;z-index:1}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-muted)}
.breadcrumb a{color:var(--c-muted);text-decoration:none;transition:color var(--ease)}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb .sep{color:#C3D0E1}
.breadcrumb .current{color:#3B4B62;max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-head{margin-top:18px}
.tag{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;font-size:13px;font-weight:600;background:var(--c-primary-soft);color:var(--c-primary)}
.tag-accent{background:rgba(0,168,138,.12);color:var(--c-accent-dark)}
.article-title{font-size:clamp(28px,4vw,44px);line-height:1.25;font-weight:700;letter-spacing:-.4px;margin:14px 0 16px;max-width:940px}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:12px;font-size:13px;color:var(--c-muted)}
.meta-row .dot{width:1px;height:12px;background:var(--c-line)}
/* ===== 正文区 ===== */
.article-main{padding:48px 0 0}
.article-body{max-width:760px;margin:0 auto;background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-card);padding:40px 44px}
.article-content{font-size:16px;line-height:1.9;color:var(--c-text)}
.article-content>*:first-child{margin-top:0}
.article-content p{margin:0 0 1.5em}
.article-content h2{font-size:clamp(21px,2.4vw,26px);line-height:1.4;font-weight:600;color:var(--c-title);margin:2em 0 .8em;padding-left:14px;border-left:3px solid var(--c-primary)}
.article-content h3{font-size:19px;line-height:1.5;font-weight:600;color:var(--c-title);margin:1.6em 0 .6em}
.article-content h4{font-size:17px;font-weight:600;color:var(--c-title);margin:1.4em 0 .5em}
.article-content ul,.article-content ol{padding-left:1.4em;margin:0 0 1.5em}
.article-content li{margin-bottom:.5em}
.article-content li::marker{color:var(--c-primary)}
.article-content blockquote{margin:1.6em 0;padding:16px 20px;background:#F2F6FC;border-left:3px solid var(--c-primary);border-radius:0 12px 12px 0;color:#3B4B62}
.article-content blockquote p:last-child{margin-bottom:0}
.article-content img{border-radius:12px;border:1px solid var(--c-line);margin:1.6em auto;height:auto}
.article-content figure{margin:1.6em 0}
.article-content figure img{margin-bottom:.5em}
.article-content figcaption{text-align:center;font-size:13px;color:var(--c-muted);line-height:1.7}
.article-content a{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px}
.article-content a:hover{color:var(--c-primary-dark)}
.article-content strong{color:var(--c-title)}
.article-content hr{border:0;border-top:1px solid var(--c-line);margin:2em 0}
.article-content table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px}
.article-content th,.article-content td{border:1px solid var(--c-line);padding:10px 14px;text-align:left}
.article-content th{background:#F2F6FC;color:var(--c-title);font-weight:600}
.article-content code{background:#F2F6FC;border-radius:6px;padding:2px 6px;font-size:14px;color:var(--c-primary-dark)}
.empty-state{text-align:center;padding:32px 20px;background:#F7FAFE;border:1px dashed #D6E3F5;border-radius:12px}
.empty-state p{font-size:16px;color:#3B4B62;margin-bottom:16px}
/* ===== 文末操作 ===== */
.article-foot{max-width:760px;margin:28px auto 0;display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between}
.article-foot .hint{font-size:14px;color:var(--c-muted)}
/* ===== 相关推荐 ===== */
.related{padding:56px 0 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:24px}
.section-head h2{font-size:clamp(22px,2.6vw,30px);line-height:1.35;font-weight:600}
.section-head p{font-size:14px;color:var(--c-muted);margin-top:6px}
.rec-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.rec-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-card);transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease)}
.rec-card:hover{transform:translateY(-2px);box-shadow:var(--sh-card-hover);border-color:#D3E1F4}
.rec-thumb{aspect-ratio:16/10;overflow:hidden;background:#EDF3FB}
.rec-thumb img{width:100%;height:100%;object-fit:cover}
.rec-body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.rec-body h3{font-size:18px;line-height:1.5;font-weight:600}
.rec-body h3 a{color:var(--c-title);text-decoration:none;transition:color var(--ease)}
.rec-body h3 a:hover{color:var(--c-primary)}
.rec-body p{font-size:14px;line-height:1.8;color:var(--c-text)}
/* ===== CTA 条 ===== */
.cta-band{margin-top:72px}
.cta-inner{position:relative;background:linear-gradient(135deg,#1657B8 0%,#0E3E86 100%);border-radius:20px;padding:40px 44px;display:flex;align-items:center;justify-content:space-between;gap:28px;overflow:hidden;flex-wrap:wrap}
.cta-inner::after{content:"";position:absolute;right:-60px;bottom:-90px;width:320px;height:320px;border-radius:50%;background:rgba(255,255,255,.08)}
.cta-text{position:relative;z-index:1;max-width:620px}
.cta-text h2{color:#fff;font-size:clamp(22px,2.6vw,28px);line-height:1.35;font-weight:600}
.cta-text p{color:#D5E3F7;font-size:15px;margin-top:10px}
.cta-actions{position:relative;z-index:1;display:flex;gap:12px;flex-wrap:wrap}
/* ===== 页脚 ===== */
.site-footer{background:#0E1B2E;color:#C6D3E4;margin-top:96px;padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:32px;padding-bottom:40px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:600;font-size:17px;margin-bottom:14px}
.footer-brand .brand-mark{background:var(--c-primary)}
.site-footer p{font-size:14px;line-height:1.9;color:#A9BBD3;max-width:380px}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px}
.footer-col ul{list-style:none;padding:0;display:flex;flex-direction:column;gap:10px}
.footer-col a{color:#A9BBD3;font-size:14px;text-decoration:none;transition:color var(--ease)}
.footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;padding:22px 0;font-size:13px;color:#8496AD}
/* ===== 响应式 ===== */
@media (max-width:1100px){
  .search-box{width:160px}
  .main-nav{gap:20px}
}
@media (max-width:1023px){
  .container{padding:0 24px}
  .main-nav,.header-actions .search-box,.header-actions .btn-ghost,.header-actions .btn-accent{display:none}
  .nav-toggle{display:inline-flex}
  .rec-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .article-body{padding:32px 28px}
  .cta-inner{padding:32px 28px}
}
@media (max-width:640px){
  .container{padding:0 20px}
  .header-inner{height:62px}
  .brand-text{font-size:16px}
  .article-hero{padding:18px 0 28px}
  .breadcrumb .current{white-space:normal;max-width:none}
  .article-main{padding:32px 0 0}
  .article-body{padding:24px 20px;border-radius:14px}
  .article-content p{font-size:16px}
  .rec-grid{grid-template-columns:1fr}
  .section-head{flex-direction:column;align-items:flex-start}
  .article-foot{flex-direction:column;align-items:stretch}
  .article-foot .btn{width:100%}
  .cta-inner{border-radius:16px;padding:28px 20px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .site-footer{margin-top:64px;padding-top:48px}
}
@media (max-width:520px){
  .article-title{font-size:26px}
  .related{padding-top:40px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
}

/* roulang page: category1 */
:root{
  --c-primary:#1657B8;
  --c-primary-dark:#0E3E86;
  --c-primary-soft:#E8F0FB;
  --c-accent:#00A88A;
  --c-accent-dark:#00836C;
  --c-warm:#F2A33C;
  --bg-page:#F5F8FC;
  --bg-card:#FFFFFF;
  --line:#E4EBF5;
  --line-strong:#D3DEEC;
  --text-title:#0E1B2E;
  --text-body:#4A5A70;
  --text-muted:#8496AD;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:14px;
  --radius-pill:999px;
  --shadow-card:0 10px 30px rgba(16,60,120,.07);
  --shadow-hover:0 16px 40px rgba(16,60,120,.12);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg-page);
  color:var(--text-body);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{color:var(--text-title);margin:0;font-weight:600;letter-spacing:0;line-height:1.35;}
h1{font-size:clamp(28px,4vw,44px);line-height:1.25;font-weight:700;}
h2{font-size:clamp(22px,2.6vw,30px);}
h3{font-size:19px;}
p{margin:0;}
img{display:block;max-width:100%;height:auto;}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--c-primary-dark);}
button{font-family:inherit;font-size:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;}
.block{padding:72px 0;}
.block-sm{padding:56px 0;}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#fff;
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:28px;height:68px;}
.brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:600;color:var(--text-title);white-space:nowrap;}
.brand:hover{color:var(--c-primary);}
.brand-mark{
  width:28px;height:28px;border-radius:8px;background:var(--c-primary);
  display:grid;place-items:center;color:#fff;flex:none;
}
.brand-mark svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
.main-nav{display:flex;align-items:center;gap:28px;}
.nav-link{
  position:relative;display:inline-block;
  padding:6px 0;font-size:15px;font-weight:500;color:#3B4B60;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--c-primary);transform:scaleX(0);transform-origin:center;
  transition:transform .2s ease-out;
}
.nav-link:hover{color:var(--c-primary);}
.nav-link:hover::after{transform:scaleX(1);opacity:.45;}
.nav-link.active{color:var(--c-primary);font-weight:600;}
.nav-link.active::after{transform:scaleX(1);opacity:1;}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}
.search-box{
  display:flex;align-items:center;gap:8px;
  width:200px;height:40px;padding:0 12px;
  background:#F2F6FC;border:1px solid var(--line);border-radius:var(--radius-btn);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.search-box:focus-within{border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(22,87,184,.14);background:#fff;}
.search-box svg{width:16px;height:16px;flex:none;fill:none;stroke:var(--text-muted);stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
.search-box input{
  width:100%;border:0;outline:none;background:transparent;
  font-size:14px;color:var(--text-title);
}
.search-box input::placeholder{color:var(--text-muted);}
.menu-toggle{
  display:none;flex-direction:column;justify-content:center;gap:5px;
  width:42px;height:42px;padding:0 10px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-btn);
  cursor:pointer;margin-left:auto;
}
.menu-toggle span{display:block;height:2px;border-radius:2px;background:var(--text-title);transition:transform .2s ease,opacity .2s ease;}
.menu-toggle:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}

.drawer{
  position:fixed;top:0;right:0;z-index:80;
  width:310px;max-width:86vw;height:100%;
  background:#fff;padding:24px 22px;
  transform:translateX(102%);transition:transform .28s ease-out;
  overflow-y:auto;box-shadow:-10px 0 40px rgba(14,27,46,.16);
}
.drawer-mask{
  position:fixed;inset:0;z-index:70;background:rgba(14,27,46,.4);
  opacity:0;visibility:hidden;transition:opacity .28s ease,visibility .28s ease;
}
body.drawer-open .drawer{transform:translateX(0);}
body.drawer-open .drawer-mask{opacity:1;visibility:visible;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px;}
.drawer-title{font-size:15px;font-weight:600;color:var(--text-title);}
.drawer-close{
  width:34px;height:34px;border-radius:9px;border:1px solid var(--line);background:#fff;
  color:var(--text-body);cursor:pointer;
}
.drawer-close:hover{background:var(--c-primary-soft);color:var(--c-primary);}
.drawer-nav{display:flex;flex-direction:column;gap:4px;margin-bottom:22px;}
.drawer-nav a{
  display:block;padding:12px 12px;border-radius:10px;
  font-size:15px;color:#3B4B60;font-weight:500;
}
.drawer-nav a:hover{background:var(--c-primary-soft);color:var(--c-primary);}
.drawer-nav a.active{background:var(--c-primary-soft);color:var(--c-primary);font-weight:600;}
.drawer .search-box{width:100%;margin-bottom:18px;}
.drawer-actions{display:flex;flex-direction:column;gap:12px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  cursor:pointer;white-space:nowrap;
  transition:background-color .2s ease-out,color .2s ease-out,border-color .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out;
}
.btn:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 8px 20px rgba(22,87,184,.2);}
.btn-primary:hover{background:var(--c-primary-dark);color:#fff;transform:translateY(-1px);}
.btn-accent{background:var(--c-accent);color:#fff;box-shadow:0 8px 20px rgba(0,168,138,.2);}
.btn-accent:hover{background:var(--c-accent-dark);color:#fff;transform:translateY(-1px);}
.btn-ghost{background:#fff;border-color:var(--line-strong);color:var(--c-primary);}
.btn-ghost:hover{background:var(--c-primary-soft);border-color:#C4D8F4;color:var(--c-primary-dark);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn-lg{height:52px;padding:0 30px;font-size:16px;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--c-primary);}
.link-arrow svg{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;transition:transform .2s ease-out;}
.link-arrow:hover svg{transform:translateX(2px);}
.link-arrow:focus-visible{outline:2px solid var(--c-primary);outline-offset:3px;border-radius:4px;}

/* ---------- 通用元素 ---------- */
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 14px;border-radius:var(--radius-pill);
  background:var(--c-primary-soft);color:var(--c-primary);
  font-size:13px;font-weight:600;
}
.tag{
  display:inline-flex;align-items:center;
  padding:3px 10px;border-radius:var(--radius-pill);
  background:#F1F6FD;color:#4B6B94;font-size:12px;font-weight:600;
}
.tag-accent{background:rgba(0,168,138,.1);color:var(--c-accent-dark);}
.media{
  border-radius:var(--radius-img);overflow:hidden;
  border:1px solid var(--line);background:#fff;box-shadow:var(--shadow-card);
}
.media img{width:100%;height:100%;object-fit:cover;}
.divider{height:1px;background:var(--line);border:0;margin:0;}

/* ---------- 面包屑 ---------- */
.breadcrumb{margin-bottom:22px;}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-muted);}
.breadcrumb a{color:var(--text-muted);}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb .sep{color:#B9C6D8;}
.breadcrumb .current{color:var(--text-body);font-weight:600;}

/* ---------- 页头 ---------- */
.page-hero{
  position:relative;background:#fff;border-bottom:1px solid var(--line);
  padding:48px 0 64px;overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;top:-180px;right:-140px;width:520px;height:520px;
  border-radius:50%;background:rgba(22,87,184,.06);pointer-events:none;
}
.hero-grid{
  position:relative;display:grid;grid-template-columns:1.05fr .95fr;
  gap:52px;align-items:center;
}
.hero-copy h1{margin:16px 0 18px;}
.hero-lead{font-size:16px;line-height:1.9;color:var(--text-body);max-width:600px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:28px 0 22px;}
.hero-chips{display:flex;flex-wrap:wrap;gap:10px;}
.hero-chips li{
  padding:6px 14px;border-radius:var(--radius-pill);
  background:#F2F6FC;border:1px solid var(--line);
  font-size:13px;color:#4B6B94;
}
.hero-media img{aspect-ratio:16/10;}

/* ---------- 交替两栏 ---------- */
.alt-row{
  display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center;
  padding:34px 0;
}
.alt-row + .alt-row{border-top:1px solid var(--line);margin-top:34px;}
.alt-row.reverse .alt-media{order:-1;}
.alt-copy h2{margin-bottom:16px;}
.alt-copy p{font-size:16px;line-height:1.9;}
.alt-list{margin:22px 0 24px;display:flex;flex-direction:column;gap:14px;}
.alt-list li{
  position:relative;padding-left:22px;font-size:15px;line-height:1.85;color:var(--text-body);
}
.alt-list li::before{
  content:"";position:absolute;left:0;top:11px;
  width:8px;height:8px;border-radius:2px;background:var(--c-primary);opacity:.55;
}
.alt-media img{aspect-ratio:16/11;}

/* ---------- 核对清单 ---------- */
.check-band{
  background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.section-head{max-width:720px;margin-bottom:40px;}
.section-head p{margin-top:14px;font-size:15px;color:var(--text-muted);}
.check-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.check-item{
  background:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-card);
  transition:box-shadow .2s ease-out,transform .2s ease-out;
}
.check-item:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);}
.check-num{
  display:inline-block;font-size:15px;font-weight:700;color:var(--c-warm);
  font-variant-numeric:tabular-nums;margin-bottom:12px;
}
.check-item h3{font-size:17px;margin-bottom:8px;}
.check-item p{font-size:14px;line-height:1.8;color:var(--text-muted);}

/* ---------- 相关入口小卡 ---------- */
.entry-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.entry-card{
  display:block;padding:24px;border-radius:var(--radius-card);
  background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-card);
  transition:box-shadow .2s ease-out,transform .2s ease-out,border-color .2s ease-out;
}
.entry-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);border-color:#CFE0F6;}
.entry-card:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}
.entry-card h3{font-size:17px;margin-bottom:8px;color:var(--text-title);}
.entry-card:hover h3{color:var(--c-primary);}
.entry-card p{font-size:14px;line-height:1.8;color:var(--text-muted);}

/* ---------- FAQ ---------- */
.faq-wrap{
  background:#F0F5FC;border:1px solid var(--line);border-radius:16px;
  padding:8px 0;overflow:hidden;
}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:last-child{border-bottom:0;}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;background:transparent;border:0;cursor:pointer;text-align:left;
  font-size:16px;font-weight:600;color:var(--text-title);
  transition:color .2s ease-out;
}
.faq-q:hover{color:var(--c-primary);}
.faq-q:focus-visible{outline:2px solid var(--c-primary);outline-offset:-2px;}
.faq-q .chev{
  width:18px;height:18px;flex:none;fill:none;stroke:var(--c-primary);
  stroke-width:2;stroke-linecap:round;stroke-linejoin:round;
  transition:transform .2s ease-out;
}
.faq-item.open .chev{transform:rotate(180deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .2s ease-out;}
.faq-a p{padding:0 22px 20px;font-size:15px;line-height:1.85;color:var(--text-muted);}

/* ---------- 底部 CTA ---------- */
.cta-band{
  position:relative;background:var(--c-primary-dark);overflow:hidden;
  padding:56px 0;
}
.cta-band::before{
  content:"";position:absolute;left:-120px;bottom:-200px;width:460px;height:460px;
  border-radius:50%;background:rgba(255,255,255,.06);pointer-events:none;
}
.cta-inner{
  position:relative;display:flex;align-items:center;justify-content:space-between;
  gap:32px;flex-wrap:wrap;
}
.cta-inner h2{color:#fff;margin-bottom:10px;}
.cta-inner p{color:#C2D6F2;font-size:15px;max-width:620px;}

/* ---------- 页脚 ---------- */
.site-footer{background:#0E1B2E;color:#C6D3E4;padding:64px 0 28px;font-size:14px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:600;margin-bottom:14px;}
.footer-brand .brand-mark{width:28px;height:28px;border-radius:8px;background:var(--c-primary);display:grid;place-items:center;color:#fff;flex:none;}
.footer-brand .brand-mark svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
.site-footer p{color:#A9BBD3;line-height:1.9;max-width:360px;}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;}
.footer-col ul li{margin-bottom:10px;}
.footer-col a{color:#C6D3E4;}
.footer-col a:hover{color:#fff;text-decoration:underline;}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  color:#8496AD;font-size:13px;
}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .container{padding:0 24px;}
  .main-nav{display:none;}
  .header-actions{display:none;}
  .menu-toggle{display:flex;}
  .block{padding:72px 0;}
  .hero-grid{grid-template-columns:1fr;gap:34px;}
  .hero-media img{aspect-ratio:16/9;}
  .alt-row{grid-template-columns:1fr;gap:28px;}
  .alt-row.reverse .alt-media{order:0;}
  .alt-row + .alt-row{margin-top:28px;}
  .check-grid{grid-template-columns:repeat(2,1fr);}
  .entry-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  .block{padding:48px 0;}
  .page-hero{padding:32px 0 44px;}
  .hero-actions{gap:12px;}
  .hero-actions .btn{flex:1 1 100%;}
  .check-grid{grid-template-columns:1fr;}
  .entry-grid{grid-template-columns:1fr;}
  .cta-band{padding:44px 0;}
  .cta-inner .btn{width:100%;}
  .hero-media img{aspect-ratio:auto;height:220px;}
}
@media (max-width:520px){
  .container{padding:0 20px;}
  .brand{font-size:15px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .faq-q{padding:16px 18px;font-size:15px;}
  .faq-a p{padding:0 18px 18px;}
}

/* roulang page: category2 */
:root{
    --c-primary:#1657B8;
    --c-primary-dark:#0E3E86;
    --c-primary-light:#E8F0FB;
    --c-accent:#00A88A;
    --c-accent-dark:#018E75;
    --c-warm:#F2A33C;
    --c-bg:#F5F8FC;
    --c-card:#FFFFFF;
    --c-line:#E4EBF5;
    --c-title:#0E1B2E;
    --c-text:#4A5A70;
    --c-muted:#8496AD;
    --r-card:16px;
    --r-btn:10px;
    --r-img:14px;
    --shadow-card:0 10px 30px rgba(16,60,120,.07);
    --shadow-hover:0 16px 40px rgba(16,60,120,.12);
    --ease:200ms ease-out;
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;}
  body{
    margin:0;
    font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
    font-size:16px;
    line-height:1.85;
    color:var(--c-text);
    background:var(--c-bg);
    -webkit-font-smoothing:antialiased;
  }
  h1,h2,h3,h4{margin:0;color:var(--c-title);letter-spacing:0;}
  h1{font-size:clamp(28px,4vw,44px);line-height:1.25;font-weight:700;}
  h2{font-size:clamp(22px,2.6vw,30px);line-height:1.35;font-weight:600;}
  h3{font-size:19px;line-height:1.5;font-weight:600;}
  p{margin:0;}
  a{color:var(--c-primary);text-decoration:none;}
  img{display:block;max-width:100%;height:auto;}
  button{font-family:inherit;}
  ul{margin:0;padding:0;list-style:none;}
  :focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px;}

  .container{max-width:1200px;margin:0 auto;padding:0 32px;}

  /* ---------- header ---------- */
  .site-header{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--c-line);}
  .header-inner{height:68px;display:flex;align-items:center;gap:24px;}
  .brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
  .brand-mark{
    width:24px;height:24px;border-radius:7px;background:var(--c-primary);
    display:grid;place-items:center;flex-shrink:0;
  }
  .brand-mark svg{width:15px;height:15px;fill:none;stroke:#fff;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
  .brand-name{font-size:17px;font-weight:600;color:var(--c-title);white-space:nowrap;}
  .main-nav{display:flex;align-items:center;gap:28px;height:68px;margin-left:12px;}
  .nav-link{
    position:relative;display:inline-flex;align-items:center;height:68px;
    font-size:15px;color:var(--c-text);transition:color var(--ease);white-space:nowrap;
  }
  .nav-link::after{
    content:"";position:absolute;left:0;right:0;bottom:-1px;height:2px;border-radius:2px;
    background:transparent;transition:background var(--ease);
  }
  .nav-link:hover{color:var(--c-primary);}
  .nav-link:hover::after{background:rgba(22,87,184,.35);}
  .nav-link.active{color:var(--c-primary);font-weight:600;}
  .nav-link.active::after{background:var(--c-primary);}
  .header-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}
  .search-box input{
    width:200px;height:38px;padding:0 14px;font-size:14px;color:var(--c-title);
    background:var(--c-primary-light);border:1px solid transparent;border-radius:var(--r-btn);
    transition:border-color var(--ease),background var(--ease),box-shadow var(--ease);
  }
  .search-box input::placeholder{color:var(--c-muted);}
  .search-box input:focus{
    outline:none;background:#fff;border-color:var(--c-primary);
    box-shadow:0 0 0 3px rgba(22,87,184,.16);
  }
  .nav-toggle{
    display:none;width:40px;height:40px;border:1px solid var(--c-line);background:#fff;
    border-radius:var(--r-btn);align-items:center;justify-content:center;cursor:pointer;
  }
  .nav-toggle svg{width:20px;height:20px;fill:none;stroke:var(--c-title);stroke-width:1.9;stroke-linecap:round;}

  /* ---------- buttons ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:6px;
    height:40px;padding:0 18px;border-radius:var(--r-btn);
    font-size:14px;font-weight:600;border:1px solid transparent;cursor:pointer;
    text-decoration:none;white-space:nowrap;
    transition:background var(--ease),color var(--ease),border-color var(--ease),box-shadow var(--ease),transform var(--ease);
  }
  .btn:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}
  .btn-primary{background:var(--c-primary);color:#fff;}
  .btn-primary:hover{background:var(--c-primary-dark);transform:translateY(-1px);box-shadow:0 10px 22px rgba(14,62,134,.24);}
  .btn-accent{background:var(--c-accent);color:#fff;}
  .btn-accent:hover{background:var(--c-accent-dark);transform:translateY(-1px);box-shadow:0 10px 22px rgba(0,168,138,.26);}
  .btn-ghost{background:#fff;border-color:var(--c-line);color:var(--c-primary);}
  .btn-ghost:hover{background:var(--c-primary-light);border-color:#C9DCF5;}
  .btn-white{background:#fff;color:var(--c-primary);}
  .btn-white:hover{background:#F0F5FD;transform:translateY(-1px);}
  .btn-outline-white{background:transparent;border-color:rgba(255,255,255,.55);color:#fff;}
  .btn-outline-white:hover{background:rgba(255,255,255,.14);border-color:#fff;}
  .btn-lg{height:48px;padding:0 26px;font-size:15px;}
  .btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none;}
  .text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--c-primary);}
  .text-link svg{width:14px;height:14px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;transition:transform var(--ease);}
  .text-link:hover svg{transform:translateX(2px);}

  /* ---------- breadcrumb ---------- */
  .breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-muted);margin-bottom:22px;}
  .breadcrumb a{color:var(--c-muted);}
  .breadcrumb a:hover{color:var(--c-primary);}
  .breadcrumb .sep{color:#C3CFDF;}
  .breadcrumb .current{color:var(--c-text);}

  /* ---------- hero ---------- */
  .hero{
    position:relative;overflow:hidden;background:#fff;
    border-bottom:1px solid var(--c-line);
    padding:40px 0 64px;
  }
  .hero::before{
    content:"";position:absolute;inset:0;pointer-events:none;
    background:
      radial-gradient(640px 300px at 8% 0%, rgba(22,87,184,.06), rgba(22,87,184,0) 70%),
      radial-gradient(520px 260px at 96% 100%, rgba(0,168,138,.05), rgba(0,168,138,0) 70%);
  }
  .hero-grid{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;}
  .hero-kicker{
    display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;margin-bottom:18px;
    background:var(--c-primary-light);color:var(--c-primary);
    border-radius:999px;font-size:13px;font-weight:600;
  }
  .hero-kicker .dot{width:6px;height:6px;border-radius:50%;background:var(--c-accent);}
  .hero-lead{margin-top:18px;font-size:17px;line-height:1.9;color:var(--c-text);max-width:600px;}
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
  .hero-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
  .chip{
    display:inline-flex;align-items:center;gap:6px;
    padding:7px 14px;background:var(--c-bg);border:1px solid var(--c-line);
    border-radius:999px;font-size:13px;color:var(--c-text);
  }
  .chip svg{width:13px;height:13px;fill:none;stroke:var(--c-accent);stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round;}
  .hero-figure{position:relative;}
  .hero-figure img{
    width:100%;aspect-ratio:16/10;object-fit:cover;
    border-radius:18px;border:1px solid var(--c-line);
    box-shadow:var(--shadow-card);
  }
  .hero-badge{
    position:absolute;left:18px;bottom:18px;
    display:flex;align-items:center;gap:10px;
    padding:10px 16px;background:rgba(255,255,255,.94);
    border:1px solid var(--c-line);border-radius:12px;
    box-shadow:0 8px 24px rgba(16,60,120,.14);
  }
  .hero-badge strong{font-size:15px;color:var(--c-title);font-weight:600;}
  .hero-badge span{font-size:12px;color:var(--c-muted);}
  .hero-badge .mark{
    width:28px;height:28px;border-radius:9px;background:var(--c-primary-light);
    display:grid;place-items:center;color:var(--c-primary);
  }
  .hero-badge .mark svg{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;}

  /* ---------- sections ---------- */
  .section{padding:96px 0;}
  .section-alt{background:#fff;border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);}
  .section-head{max-width:720px;margin-bottom:40px;}
  .section-head p{margin-top:14px;font-size:16px;color:var(--c-text);}
  .eyebrow{
    display:inline-block;margin-bottom:12px;font-size:13px;font-weight:600;
    color:var(--c-primary);letter-spacing:.02em;
  }

  /* ---------- three column cards ---------- */
  .card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
  .card{
    display:flex;flex-direction:column;height:100%;
    background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-card);
    overflow:hidden;box-shadow:var(--shadow-card);
    transition:box-shadow var(--ease),transform var(--ease);
  }
  .card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);}
  .card-cover{position:relative;overflow:hidden;background:var(--c-primary-light);}
  .card-cover img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform 300ms ease-out;}
  .card:hover .card-cover img{transform:scale(1.03);}
  .card-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1;}
  .tag{
    display:inline-flex;align-items:center;gap:6px;align-self:flex-start;
    padding:4px 12px;border-radius:999px;font-size:12px;font-weight:600;
    background:var(--c-primary-light);color:var(--c-primary);
  }
  .tag-accent{background:rgba(0,168,138,.12);color:var(--c-accent-dark);}
  .card-body p{font-size:15px;color:var(--c-text);}
  .card-meta{
    margin-top:auto;padding-top:14px;border-top:1px solid var(--c-line);
    display:flex;align-items:center;justify-content:space-between;
    font-size:13px;color:var(--c-muted);
  }

  /* ---------- checklist ---------- */
  .check-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px 24px;}
  .check-item{
    display:flex;gap:14px;padding:18px 20px;background:#fff;
    border:1px solid var(--c-line);border-radius:14px;
    transition:border-color var(--ease),box-shadow var(--ease),transform var(--ease);
  }
  .check-item:hover{border-color:#C9DCF5;box-shadow:var(--shadow-card);transform:translateY(-2px);}
  .check-num{
    flex:0 0 26px;height:26px;border-radius:8px;
    display:grid;place-items:center;
    background:var(--c-primary-light);color:var(--c-primary);
    font-size:13px;font-weight:600;font-variant-numeric:tabular-nums;
  }
  .check-item h3{font-size:16px;margin-bottom:4px;}
  .check-item p{font-size:14px;color:var(--c-text);line-height:1.8;}

  /* ---------- faq ---------- */
  .faq{background:#fff;border:1px solid var(--c-line);border-radius:16px;overflow:hidden;box-shadow:var(--shadow-card);}
  .faq-item + .faq-item{border-top:1px solid var(--c-line);}
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
    padding:20px 24px;background:none;border:0;cursor:pointer;text-align:left;
    font-size:16px;font-weight:600;color:var(--c-title);
    transition:background var(--ease),color var(--ease);
  }
  .faq-q:hover{background:#F8FBFF;color:var(--c-primary);}
  .faq-q .arrow{
    flex:0 0 22px;width:22px;height:22px;border-radius:50%;
    display:grid;place-items:center;background:var(--c-bg);
    transition:transform var(--ease),background var(--ease);
  }
  .faq-q .arrow svg{width:12px;height:12px;fill:none;stroke:var(--c-primary);stroke-width:2.4;stroke-linecap:round;stroke-linejoin:round;}
  .faq-item.open .faq-q .arrow{transform:rotate(180deg);background:var(--c-primary-light);}
  .faq-a{max-height:0;overflow:hidden;transition:max-height var(--ease);}
  .faq-a p{padding:0 24px 22px;font-size:15px;line-height:1.85;color:var(--c-text);}

  /* ---------- entries ---------- */
  .entry-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;}
  .entry-card{
    display:flex;align-items:center;justify-content:space-between;gap:18px;
    padding:20px 24px;background:#fff;border:1px solid var(--c-line);border-radius:14px;
    transition:border-color var(--ease),box-shadow var(--ease),transform var(--ease);
  }
  .entry-card:hover{border-color:#C9DCF5;box-shadow:var(--shadow-card);transform:translateY(-2px);}
  .entry-card h3{font-size:16px;margin-bottom:4px;}
  .entry-card p{font-size:14px;color:var(--c-text);}
  .entry-card .go{
    flex:0 0 32px;width:32px;height:32px;border-radius:10px;
    display:grid;place-items:center;background:var(--c-primary-light);
  }
  .entry-card .go svg{width:15px;height:15px;fill:none;stroke:var(--c-primary);stroke-width:2;stroke-linecap:round;stroke-linejoin:round;transition:transform var(--ease);}
  .entry-card:hover .go svg{transform:translateX(2px);}

  /* ---------- cta ---------- */
  .cta-wrap{padding:0 0 96px;}
  .cta-box{
    position:relative;overflow:hidden;
    background:var(--c-primary);border-radius:20px;
    padding:48px;display:flex;align-items:center;justify-content:space-between;gap:32px;
    box-shadow:0 20px 50px rgba(14,62,134,.2);
  }
  .cta-box::after{
    content:"";position:absolute;right:-60px;top:-80px;width:280px;height:280px;
    border-radius:50%;background:rgba(255,255,255,.07);pointer-events:none;
  }
  .cta-box h2{color:#fff;}
  .cta-box p{margin-top:12px;font-size:15px;color:rgba(255,255,255,.85);max-width:560px;}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px;position:relative;z-index:1;}

  /* ---------- footer ---------- */
  .site-footer{background:#0E1B2E;color:#fff;padding:64px 0 0;margin-top:0;}
  .footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;padding-bottom:44px;}
  .footer-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:600;color:#fff;margin-bottom:14px;}
  .footer-brand .brand-mark{background:var(--c-primary);}
  .site-footer p{color:#A9BBD3;font-size:14px;line-height:1.85;}
  .footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:14px;}
  .footer-col ul{display:grid;gap:10px;}
  .footer-col a{color:#A9BBD3;font-size:14px;transition:color var(--ease);}
  .footer-col a:hover{color:#fff;text-decoration:underline;}
  .footer-bottom{
    border-top:1px solid rgba(255,255,255,.12);
    display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
    padding:20px 0 28px;font-size:13px;color:#8496AD;
  }

  /* ---------- drawer ---------- */
  .mask{
    position:fixed;inset:0;background:rgba(14,27,46,.4);z-index:55;
    opacity:0;visibility:hidden;transition:opacity var(--ease),visibility var(--ease);
  }
  .mask.open{opacity:1;visibility:visible;}
  .drawer{
    position:fixed;top:0;right:0;bottom:0;width:320px;max-width:86vw;z-index:60;
    background:#fff;padding:24px;overflow-y:auto;
    transform:translateX(100%);transition:transform 250ms ease-out;
    display:flex;flex-direction:column;gap:22px;
  }
  .drawer.open{transform:translateX(0);}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;}
  .drawer-close{
    width:36px;height:36px;border-radius:var(--r-btn);border:1px solid var(--c-line);
    background:#fff;display:grid;place-items:center;cursor:pointer;
  }
  .drawer-close svg{width:16px;height:16px;fill:none;stroke:var(--c-title);stroke-width:2;stroke-linecap:round;}
  .drawer-nav{display:grid;gap:4px;}
  .drawer-nav a{
    display:block;padding:12px 14px;border-radius:10px;font-size:15px;color:var(--c-text);
    transition:background var(--ease),color var(--ease);
  }
  .drawer-nav a:hover{background:var(--c-bg);color:var(--c-primary);}
  .drawer-nav a.active{background:var(--c-primary-light);color:var(--c-primary);font-weight:600;}
  .drawer-actions{display:grid;gap:10px;}
  .drawer-actions .btn{width:100%;}

  /* ---------- responsive ---------- */
  @media (max-width:1023px){
    .container{padding:0 24px;}
    .main-nav,.header-actions{display:none;}
    .nav-toggle{display:inline-flex;}
    .hero-grid{grid-template-columns:1fr;gap:32px;}
    .hero{padding:32px 0 48px;}
    .section{padding:72px 0;}
    .cta-wrap{padding-bottom:72px;}
    .card-grid{grid-template-columns:repeat(2,1fr);}
    .cta-box{padding:36px;flex-direction:column;align-items:flex-start;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
    .entry-grid{grid-template-columns:1fr;}
    .hero-figure img{aspect-ratio:16/9;}
  }
  @media (max-width:639px){
    .container{padding:0 20px;}
    .section{padding:48px 0;}
    .hero{padding:24px 0 40px;}
    .hero-lead{font-size:16px;}
    .hero-actions{flex-direction:column;align-items:stretch;}
    .hero-actions .btn{width:100%;}
    .card-grid{grid-template-columns:1fr;}
    .check-grid{grid-template-columns:1fr;}
    .card-body{padding:20px;}
    .faq-q{padding:18px 20px;font-size:15px;}
    .faq-a p{padding:0 20px 20px;}
    .cta-wrap{padding-bottom:48px;}
    .cta-box{padding:28px 22px;border-radius:16px;}
    .cta-actions{width:100%;flex-direction:column;align-items:stretch;}
    .cta-actions .btn{width:100%;}
    .footer-grid{grid-template-columns:1fr;}
    .hero-figure img{aspect-ratio:16/10;max-height:240px;}
    .hero-badge{left:12px;bottom:12px;padding:8px 12px;}
    .footer-bottom{flex-direction:column;align-items:flex-start;}
  }

/* roulang page: category3 */
:root{
  --c-primary:#1657B8;
  --c-primary-dark:#0E3E86;
  --c-primary-soft:#E8F0FB;
  --c-accent:#00A88A;
  --c-accent-dark:#008F76;
  --c-warm:#F2A33C;
  --c-bg:#F5F8FC;
  --c-card:#FFFFFF;
  --c-line:#E4EBF5;
  --c-title:#0E1B2E;
  --c-text:#4A5A70;
  --c-muted:#8496AD;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:14px;
  --shadow-card:0 10px 30px rgba(16,60,120,.07);
  --shadow-hover:0 16px 40px rgba(16,60,120,.12);
  --section-y:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Hiragino Sans GB",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto;}
a{color:var(--c-primary);text-decoration:none;background:transparent;}
a:hover{color:var(--c-primary-dark);}
button,input{font:inherit;color:inherit;}
button{cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;color:var(--c-title);font-weight:600;letter-spacing:0;}
p{margin:0;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}

/* ---------- 容器 ---------- */
.container{
  max-width:1200px;
  margin:0 auto;
  padding:0 32px;
}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:#fff;
  border-bottom:1px solid var(--c-line);
}
.header-inner{
  height:68px;
  display:flex;
  align-items:center;
  gap:22px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:17px;
  font-weight:600;
  color:var(--c-title);
  white-space:nowrap;
}
.brand:hover{color:var(--c-primary);}
.brand-mark{
  width:24px;
  height:24px;
  flex:0 0 24px;
  border-radius:7px;
  background:var(--c-primary);
  display:grid;
  place-items:center;
}
.brand-mark svg{
  width:15px;
  height:15px;
  fill:none;
  stroke:#fff;
  stroke-width:1.9;
  stroke-linecap:round;
  stroke-linejoin:round;
}
.main-nav{
  display:flex;
  align-items:center;
  gap:28px;
  margin-left:10px;
}
.nav-link{
  position:relative;
  display:inline-block;
  padding:22px 0;
  font-size:15px;
  color:var(--c-text);
  transition:color .2s ease-out;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:14px;
  height:1px;
  background:transparent;
  border-radius:2px;
  transition:background .2s ease-out,height .2s ease-out;
}
.nav-link:hover{color:var(--c-primary);}
.nav-link:hover::after{background:rgba(22,87,184,.45);}
.nav-link.active{color:var(--c-primary);font-weight:600;}
.nav-link.active::after{height:2px;background:var(--c-primary);}
.header-actions{
  margin-left:auto;
  display:flex;
  align-items:center;
  gap:10px;
}
.search-box{
  position:relative;
  display:flex;
  align-items:center;
  width:200px;
  height:38px;
  background:#F1F5FB;
  border:1px solid transparent;
  border-radius:var(--radius-btn);
  padding:0 12px;
  gap:8px;
  transition:border-color .2s ease-out,box-shadow .2s ease-out,background .2s ease-out;
}
.search-box:focus-within{
  background:#fff;
  border-color:var(--c-primary);
  box-shadow:0 0 0 3px rgba(22,87,184,.14);
}
.search-box svg{
  width:15px;
  height:15px;
  flex:0 0 15px;
  fill:none;
  stroke:var(--c-muted);
  stroke-width:2;
  stroke-linecap:round;
}
.search-box input{
  width:100%;
  border:0;
  background:transparent;
  font-size:14px;
  outline:none;
  color:var(--c-title);
}
.search-box input::placeholder{color:var(--c-muted);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:6px;
  height:38px;
  padding:0 16px;
  border-radius:var(--radius-btn);
  font-size:14px;
  font-weight:500;
  line-height:1;
  border:1px solid transparent;
  white-space:nowrap;
  transition:background .2s ease-out,color .2s ease-out,border-color .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out;
}
.btn-primary{background:var(--c-primary);color:#fff;}
.btn-primary:hover{background:var(--c-primary-dark);color:#fff;transform:translateY(-1px);}
.btn-accent{background:var(--c-accent);color:#fff;}
.btn-accent:hover{background:var(--c-accent-dark);color:#fff;transform:translateY(-1px);}
.btn-ghost{background:#fff;border-color:var(--c-line);color:var(--c-primary);}
.btn-ghost:hover{background:var(--c-primary-soft);border-color:#C7DBF5;color:var(--c-primary-dark);}
.btn-lg{height:46px;padding:0 24px;font-size:15px;}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.45;cursor:not-allowed;transform:none;}
.btn:active{transform:translateY(0);}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:500;
  color:var(--c-primary);
}
.text-link svg{
  width:14px;
  height:14px;
  fill:none;
  stroke:currentColor;
  stroke-width:2;
  stroke-linecap:round;
  stroke-linejoin:round;
  transition:transform .2s ease-out;
}
.text-link:hover svg{transform:translateX(2px);}

.menu-toggle{
  display:none;
  width:40px;
  height:40px;
  border-radius:10px;
  border:1px solid var(--c-line);
  background:#fff;
  align-items:center;
  justify-content:center;
}
.menu-toggle svg{width:20px;height:20px;stroke:var(--c-title);stroke-width:1.9;fill:none;stroke-linecap:round;}

/* ---------- 抽屉 ---------- */
.drawer-mask{
  position:fixed;
  inset:0;
  background:rgba(14,27,46,.4);
  opacity:0;
  visibility:hidden;
  transition:opacity .25s ease-out,visibility .25s ease-out;
  z-index:90;
}
.drawer{
  position:fixed;
  top:0;
  right:0;
  bottom:0;
  width:300px;
  max-width:86vw;
  background:#fff;
  z-index:100;
  transform:translateX(100%);
  transition:transform .28s ease-out;
  padding:20px;
  overflow-y:auto;
  display:flex;
  flex-direction:column;
  gap:18px;
}
.drawer-open .drawer{transform:translateX(0);}
.drawer-open .drawer-mask{opacity:1;visibility:visible;}
.drawer-open{overflow:hidden;}
.drawer-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding-bottom:14px;
  border-bottom:1px solid var(--c-line);
}
.drawer-close{
  width:34px;height:34px;
  border-radius:9px;
  border:1px solid var(--c-line);
  background:#fff;
  display:grid;place-items:center;
}
.drawer-close svg{width:16px;height:16px;stroke:var(--c-title);stroke-width:2;fill:none;stroke-linecap:round;}
.drawer-nav{display:flex;flex-direction:column;}
.drawer-nav a{
  padding:13px 4px;
  font-size:15px;
  color:var(--c-text);
  border-bottom:1px solid var(--c-line);
}
.drawer-nav a.active{color:var(--c-primary);font-weight:600;}
.drawer .search-box{width:100%;}
.drawer-actions{display:flex;flex-direction:column;gap:10px;}
.drawer-actions .btn{width:100%;}

/* ---------- 面包屑 ---------- */
.crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--c-muted);
  padding-top:22px;
}
.crumb a{color:var(--c-muted);}
.crumb a:hover{color:var(--c-primary);}
.crumb span.sep{color:#C3D0E2;}
.crumb .current{color:var(--c-title);}

/* ---------- 分类首屏 ---------- */
.page-hero{
  position:relative;
  padding:34px 0 0;
  overflow:hidden;
}
.page-hero::before{
  content:"";
  position:absolute;
  top:-180px;
  right:-120px;
  width:560px;
  height:560px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(22,87,184,.10),rgba(22,87,184,0) 68%);
  pointer-events:none;
}
.page-hero-inner{position:relative;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:28px;
  padding:0 12px;
  border-radius:999px;
  background:var(--c-primary-soft);
  color:var(--c-primary-dark);
  font-size:13px;
  font-weight:500;
}
h1.page-title{
  margin-top:16px;
  font-size:clamp(28px,4vw,44px);
  line-height:1.25;
  font-weight:700;
  max-width:900px;
}
.page-lede{
  margin-top:16px;
  max-width:840px;
  font-size:16.5px;
  line-height:1.9;
  color:var(--c-text);
}
.chip-row{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:20px;
}
.chip{
  display:inline-flex;
  align-items:center;
  height:30px;
  padding:0 13px;
  border-radius:999px;
  background:#fff;
  border:1px solid var(--c-line);
  font-size:13px;
  color:var(--c-text);
}
.chip i{
  width:6px;height:6px;border-radius:50%;
  background:var(--c-accent);
  margin-right:7px;
  display:inline-block;
}
.hero-figure{
  margin-top:28px;
  border-radius:18px;
  overflow:hidden;
  border:1px solid var(--c-line);
  box-shadow:var(--shadow-card);
  aspect-ratio:21/9;
  background:#dbe6f5;
}
.hero-figure img{width:100%;height:100%;object-fit:cover;}

/* ---------- 板块 ---------- */
.section{padding-top:72px;}
.section-head{max-width:760px;margin-bottom:28px;}
.section-head h2{
  font-size:clamp(22px,2.6vw,30px);
  line-height:1.35;
}
.section-head p{
  margin-top:12px;
  font-size:15px;
  color:var(--c-text);
}

/* ---------- 主布局 ---------- */
.layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 340px;
  gap:32px;
  align-items:start;
}

/* ---------- 时间线 ---------- */
.timeline{display:flex;flex-direction:column;}
.step{
  position:relative;
  display:grid;
  grid-template-columns:52px minmax(0,1fr);
  gap:20px;
  padding-bottom:24px;
}
.step:last-child{padding-bottom:0;}
.step:not(:last-child)::before{
  content:"";
  position:absolute;
  left:25px;
  top:56px;
  bottom:4px;
  width:2px;
  background:linear-gradient(180deg,var(--c-line),rgba(228,235,245,.25));
}
.step-idx{
  width:52px;
  height:52px;
  border-radius:14px;
  background:#fff;
  border:1px solid var(--c-line);
  box-shadow:var(--shadow-card);
  display:grid;
  place-items:center;
  font-size:16px;
  font-weight:600;
  color:var(--c-primary);
  font-variant-numeric:tabular-nums;
  z-index:1;
}
.step:first-child .step-idx{
  border-color:rgba(242,163,60,.55);
  color:#B9761B;
}
.step-body{
  background:var(--c-card);
  border:1px solid var(--c-line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  padding:22px 24px;
  transition:box-shadow .2s ease-out,transform .2s ease-out;
}
.step-body:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);}
.step-body h3{font-size:19px;line-height:1.5;}
.step-body p{margin-top:10px;font-size:15px;line-height:1.9;}
.step-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}
.tag{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 10px;
  border-radius:999px;
  background:var(--c-primary-soft);
  color:var(--c-primary-dark);
  font-size:12.5px;
}
.tag-accent{background:rgba(0,168,138,.12);color:#00735E;}
.tag-warm{background:rgba(242,163,60,.14);color:#A66A12;}

/* ---------- 侧栏 ---------- */
.side{display:flex;flex-direction:column;gap:20px;position:sticky;top:92px;}
.side-card{
  background:var(--c-card);
  border:1px solid var(--c-line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  padding:22px;
}
.side-card h3{font-size:17px;}
.side-card .side-sub{
  margin-top:6px;
  font-size:13px;
  color:var(--c-muted);
}
.kv-list{margin-top:14px;}
.kv{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:11px 0;
  border-bottom:1px solid var(--c-line);
  font-size:14px;
}
.kv:last-child{border-bottom:0;padding-bottom:0;}
.kv strong{color:var(--c-title);font-weight:500;}
.kv span{color:var(--c-muted);font-size:13px;white-space:nowrap;}
.side-quick{margin-top:14px;display:flex;flex-direction:column;}
.side-quick a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding:11px 12px;
  border-radius:10px;
  font-size:14px;
  color:var(--c-text);
  transition:background .2s ease-out,color .2s ease-out;
}
.side-quick a:hover{background:var(--c-primary-soft);color:var(--c-primary-dark);}
.side-quick svg{
  width:14px;height:14px;
  fill:none;stroke:currentColor;stroke-width:2;
  stroke-linecap:round;stroke-linejoin:round;
  flex:0 0 14px;
}
.side-note{
  background:linear-gradient(180deg,rgba(22,87,184,.06),rgba(22,87,184,0));
  border:1px solid var(--c-line);
}
.side-note p{margin-top:10px;font-size:14px;line-height:1.85;color:var(--c-text);}

/* ---------- 速览列表 ---------- */
.rows{
  background:var(--c-card);
  border:1px solid var(--c-line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  overflow:hidden;
}
.row-item{
  display:grid;
  grid-template-columns:190px minmax(0,1fr) auto;
  gap:20px;
  align-items:center;
  padding:20px 24px;
  border-bottom:1px solid var(--c-line);
  transition:background .2s ease-out;
}
.row-item:last-child{border-bottom:0;}
.row-item:hover{background:#FAFCFF;}
.row-item:hover .row-title{color:var(--c-primary);}
.row-title{
  font-size:16px;
  font-weight:600;
  color:var(--c-title);
  transition:color .2s ease-out;
}
.row-desc{font-size:14.5px;line-height:1.85;}
.row-meta{font-size:13px;color:var(--c-muted);white-space:nowrap;}

/* ---------- 相关入口 ---------- */
.link-cards{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:20px;
}
.link-card{
  display:block;
  background:var(--c-card);
  border:1px solid var(--c-line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  padding:22px 24px;
  transition:box-shadow .2s ease-out,transform .2s ease-out,border-color .2s ease-out;
}
.link-card:hover{
  box-shadow:var(--shadow-hover);
  transform:translateY(-2px);
  border-color:#CFE0F6;
  color:var(--c-text);
}
.link-card h3{font-size:17px;}
.link-card p{margin-top:8px;font-size:14px;line-height:1.85;}
.link-card .text-link{margin-top:14px;}

/* ---------- FAQ ---------- */
.faq{
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:8px;
  box-shadow:var(--shadow-card);
  overflow:hidden;
}
.faq-item{border-bottom:1px solid var(--c-line);}
.faq-item:last-child{border-bottom:0;}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:18px 22px;
  background:transparent;
  border:0;
  text-align:left;
  font-size:16px;
  font-weight:600;
  color:var(--c-title);
  transition:background .2s ease-out,color .2s ease-out;
}
.faq-q:hover{background:#FAFCFF;color:var(--c-primary);}
.faq-q svg{
  width:16px;height:16px;
  flex:0 0 16px;
  fill:none;stroke:var(--c-muted);stroke-width:2;
  stroke-linecap:round;stroke-linejoin:round;
  transition:transform .2s ease-out,stroke .2s ease-out;
}
.faq-item.open .faq-q{color:var(--c-primary);}
.faq-item.open .faq-q svg{transform:rotate(180deg);stroke:var(--c-primary);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .2s ease-out;
}
.faq-a-inner{
  padding:0 22px 20px;
  font-size:15px;
  line-height:1.85;
  color:var(--c-text);
}

/* ---------- CTA 条 ---------- */
.cta-band{
  position:relative;
  margin-top:var(--section-y);
  background:var(--c-primary-dark);
  border-radius:20px;
  padding:44px;
  overflow:hidden;
}
.cta-band::before{
  content:"";
  position:absolute;
  left:-80px;
  bottom:-160px;
  width:420px;
  height:420px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(0,168,138,.28),rgba(0,168,138,0) 70%);
  pointer-events:none;
}
.cta-inner{
  position:relative;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  flex-wrap:wrap;
}
.cta-inner h2{
  color:#fff;
  font-size:clamp(21px,2.4vw,27px);
  line-height:1.4;
}
.cta-inner p{
  margin-top:10px;
  font-size:15px;
  color:#C9D9F0;
  max-width:560px;
}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}
.cta-actions .btn-ghost{background:transparent;border-color:rgba(255,255,255,.36);color:#fff;}
.cta-actions .btn-ghost:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.6);color:#fff;}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:var(--section-y);
  background:#0E1B2E;
  color:#C9D9F0;
  padding:56px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:32px;
  padding-bottom:36px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:17px;
  font-weight:600;
  color:#fff;
}
.footer-brand .brand-mark{background:var(--c-primary);}
.site-footer p{
  margin-top:14px;
  font-size:14px;
  line-height:1.9;
  color:#A9BBD3;
  max-width:360px;
}
.footer-col h4{
  color:#fff;
  font-size:15px;
  font-weight:600;
  margin-bottom:16px;
}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{
  font-size:14px;
  color:#A9BBD3;
  transition:color .2s ease-out;
}
.footer-col a:hover{color:#fff;text-decoration:underline;}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  border-top:1px solid rgba(255,255,255,.12);
  padding:18px 0 26px;
  font-size:13px;
  color:#8496AD;
}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  :root{--section-y:72px;}
  .container{padding:0 24px;}
  .main-nav,.header-actions .search-box,.header-actions .btn{display:none;}
  .menu-toggle{display:inline-flex;}
  .layout{grid-template-columns:minmax(0,1fr);}
  .side{position:static;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:767px){
  :root{--section-y:48px;}
  .container{padding:0 20px;}
  .row-item{grid-template-columns:minmax(0,1fr);gap:8px;padding:18px 20px;}
  .row-meta{white-space:normal;}
  .link-cards{grid-template-columns:minmax(0,1fr);}
  .cta-band{padding:30px 24px;border-radius:16px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .hero-figure{aspect-ratio:16/10;}
}
@media (max-width:519px){
  .step{grid-template-columns:44px minmax(0,1fr);gap:14px;}
  .step-idx{width:44px;height:44px;border-radius:12px;font-size:15px;}
  .step:not(:last-child)::before{left:21px;top:48px;}
  .step-body{padding:18px 18px;}
  .side-card{padding:18px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .brand{font-size:15.5px;}
  .faq-q{padding:16px 18px;font-size:15px;}
  .faq-a-inner{padding:0 18px 18px;}
}