/* roulang page: index */
:root{
  --primary:#2450B8;
  --primary-hover:#1B3F96;
  --primary-soft:#EEF3FF;
  --accent:#E4782F;
  --accent-soft:#FDF1E7;
  --page:#F6F8FC;
  --card:#FFFFFF;
  --border:#E8EDF5;
  --input-border:#DDE4EE;
  --text:#0F172A;
  --text-2:#475569;
  --text-3:#94A3B8;
  --success:#12A594;
  --warning:#D97706;
  --error:#D92D20;
  --dark:#101C33;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-card:0 1px 2px rgba(15,23,42,.04), 0 8px 24px -12px rgba(15,23,42,.10);
  --shadow-hover:0 16px 40px -16px rgba(15,23,42,.18);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  background:var(--page);
  color:var(--text);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
button,input,textarea,select{font:inherit;color:inherit}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px}

.container{max-width:1200px;margin:0 auto;padding:0 20px}
.section{padding:96px 0}
.section-tight{padding:72px 0}
.section-band{background:#fff;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.mono{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:50;background:#fff;
  border-bottom:1px solid var(--border);
  box-shadow:0 1px 2px rgba(15,23,42,.04);
}
.nav-wrap{display:flex;align-items:center;gap:24px;height:68px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{width:34px;height:34px;border-radius:10px;background:var(--primary-soft);display:flex;align-items:center;justify-content:center;color:var(--primary)}
.brand-text{font-size:17px;font-weight:700;letter-spacing:.01em;color:var(--text)}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:8px}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:68px;
  padding:0 14px;font-size:15px;color:var(--text-2);font-weight:500;
  transition:color .2s ease-out;
}
.nav-link:hover{color:var(--primary)}
.nav-link.is-active{color:var(--primary);font-weight:600}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:16px;height:2px;
  background:var(--primary);border-radius:2px;
}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
.search-box{
  display:flex;align-items:center;gap:8px;height:40px;padding:0 14px;width:210px;
  background:var(--page);border:1px solid transparent;border-radius:10px;
  transition:all .2s ease-out;color:var(--text-3);
}
.search-box:focus-within{background:#fff;border-color:var(--primary);box-shadow:0 0 0 4px rgba(36,80,184,.12)}
.search-box input{border:0;background:transparent;outline:none;width:100%;font-size:14px;color:var(--text)}
.search-box input::placeholder{color:var(--text-3)}
.menu-btn{
  display:none;width:42px;height:42px;border:1px solid var(--border);background:#fff;
  border-radius:10px;align-items:center;justify-content:center;cursor:pointer;color:var(--text);
}
.menu-btn:hover{border-color:var(--primary);color:var(--primary)}

/* ---------- 抽屉 ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(15,23,42,.45);opacity:0;visibility:hidden;
  transition:opacity .2s ease-out,visibility .2s ease-out;z-index:60;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:82%;max-width:340px;background:#fff;
  border-radius:16px 0 0 16px;z-index:70;transform:translateX(100%);
  transition:transform .25s ease-out;display:flex;flex-direction:column;padding:20px;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--border)}
.drawer-close{width:38px;height:38px;border:1px solid var(--border);background:#fff;border-radius:10px;cursor:pointer;color:var(--text-2);display:flex;align-items:center;justify-content:center}
.drawer-nav{padding:8px 0;flex:1;overflow-y:auto}
.drawer-link{display:block;padding:14px 4px;font-size:15px;color:var(--text-2);border-bottom:1px solid var(--border)}
.drawer-link:hover{color:var(--primary)}
.drawer-link.is-active{color:var(--primary);font-weight:600}
.drawer-foot{padding-top:16px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--radius-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:background .2s ease-out,color .2s ease-out,box-shadow .2s ease-out,transform .2s ease-out;
}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-hover);transform:translateY(-2px);box-shadow:0 14px 28px -14px rgba(36,80,184,.75)}
.btn-outline{background:#fff;border-color:var(--primary);color:var(--primary)}
.btn-outline:hover{background:var(--primary-soft);transform:translateY(-2px)}
.btn-pill{border-radius:999px}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-size:14px;
  font-weight:600;transition:color .2s ease-out;
}
.link-arrow:hover{color:var(--primary-hover);text-decoration:underline;text-underline-offset:3px}

/* ---------- 通用组件 ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:28px;padding:0 12px;
  border-radius:999px;background:var(--primary-soft);color:var(--primary);
  font-size:13px;font-weight:600;letter-spacing:.01em;
}
.eyebrow-accent{background:var(--accent-soft);color:#B85B18}
.section-head{margin-bottom:40px}
.section-head.center{text-align:center;max-width:720px;margin-left:auto;margin-right:auto}
.section-title{font-size:28px;line-height:1.3;font-weight:700;letter-spacing:.01em}
.section-desc{margin-top:12px;color:var(--text-2);font-size:16px}
.head-split{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap}
.card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);transition:box-shadow .2s ease-out,transform .2s ease-out,border-color .2s ease-out;
}
.card:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px)}
.card-pad{padding:24px}
.icon-box{
  width:44px;height:44px;border-radius:12px;background:var(--primary-soft);color:var(--primary);
  display:flex;align-items:center;justify-content:center;flex:0 0 auto;
}
.icon-box-accent{background:var(--accent-soft);color:#B85B18}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  background:var(--primary-soft);color:var(--primary);font-size:12px;font-weight:600;
}
.badge-accent{background:var(--accent-soft);color:#B85B18}
.badge-muted{background:#F1F5F9;color:var(--text-2)}
.clamp-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.divider{height:1px;background:var(--border);border:0;margin:0}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  background:linear-gradient(180deg,#FFFFFF 0%,#F1F5FF 100%);
  border-bottom:1px solid var(--border);
  padding:72px 0 80px;
}
.hero::after{
  content:"";position:absolute;right:-140px;top:-160px;width:460px;height:460px;border-radius:50%;
  background:radial-gradient(circle,rgba(36,80,184,.10) 0%,rgba(36,80,184,0) 68%);
  pointer-events:none;
}
.hero-title{font-size:44px;line-height:1.25;font-weight:700;margin-top:20px;letter-spacing:.01em}
.hero-sub{margin-top:18px;font-size:17px;color:var(--text-2);max-width:520px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
.trust-row{display:flex;flex-wrap:wrap;gap:28px;margin-top:40px;padding-top:28px;border-top:1px solid rgba(15,23,42,.08)}
.trust-item{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--text-2)}
.trust-item svg{color:var(--primary);flex:0 0 auto}
.hero-media{position:relative}
.hero-media img{width:100%;border-radius:16px;object-fit:cover;aspect-ratio:16/11}
.hero-card{
  position:absolute;right:-8px;bottom:-20px;width:250px;background:#fff;
  border:1px solid var(--border);border-radius:14px;padding:16px 18px;
  box-shadow:0 16px 40px -18px rgba(15,23,42,.28);
}
.hero-card-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:6px 0;font-size:13px}
.hero-card-row + .hero-card-row{border-top:1px dashed var(--border)}
.hero-card-key{color:var(--text-3)}
.hero-card-val{color:var(--text);font-weight:600}

/* ---------- 能力区 ---------- */
.cap-main{padding:32px;display:flex;flex-direction:column;gap:18px;height:100%}
.cap-main h3{font-size:22px;font-weight:700;line-height:1.35}
.cap-main p{color:var(--text-2);font-size:15px}
.cap-sub-card{display:flex;gap:16px;padding:22px;align-items:flex-start}
.cap-sub-card h4{font-size:17px;font-weight:600;margin-bottom:6px}
.cap-sub-card p{font-size:14.5px;color:var(--text-2)}
.cap-media{border-radius:var(--radius-img);overflow:hidden;border:1px solid var(--border)}
.cap-media img{width:100%;aspect-ratio:16/9;object-fit:cover}

/* ---------- 数据条 ---------- */
.stat-band{background:#fff;border-top:1px solid var(--border);border-bottom:1px solid var(--border);padding:56px 0}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.stat-item{border-left:2px solid var(--border);padding-left:20px}
.stat-item:first-child{border-left-color:var(--accent)}
.stat-num{font-size:34px;font-weight:700;line-height:1.1;letter-spacing:.01em}
.stat-num small{font-size:16px;font-weight:600;margin-left:4px;color:var(--text-2)}
.stat-label{margin-top:8px;font-size:14px;color:var(--text-2)}

/* ---------- 场景区 ---------- */
.scene-list{margin-top:8px}
.scene-item{display:flex;gap:16px;padding:18px 0;border-bottom:1px dashed var(--border)}
.scene-item:last-child{border-bottom:0}
.scene-idx{
  width:28px;height:28px;border-radius:999px;border:1px solid var(--primary);color:var(--primary);
  font-size:13px;font-weight:700;display:flex;align-items:center;justify-content:center;flex:0 0 auto;margin-top:3px;
}
.scene-item h4{font-size:16.5px;font-weight:600;margin-bottom:4px}
.scene-item p{font-size:14.5px;color:var(--text-2);margin-bottom:6px}
.scene-media img{width:100%;border-radius:var(--radius-img);object-fit:cover;aspect-ratio:4/3}

/* ---------- 流程 ---------- */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative}
.flow-step{position:relative;padding-top:8px}
.flow-num{
  width:46px;height:46px;border-radius:999px;border:1.5px solid var(--primary);color:var(--primary);
  background:#fff;display:flex;align-items:center;justify-content:center;font-size:17px;font-weight:700;
}
.flow-step h4{font-size:17px;font-weight:600;margin:18px 0 8px}
.flow-step p{font-size:14.5px;color:var(--text-2)}
.flow-step::after{
  content:"";position:absolute;top:31px;left:60px;right:-24px;height:1px;
  border-top:1.5px dashed #C9D6EE;
}
.flow-step:last-child::after{display:none}

/* ---------- 资讯列表 ---------- */
.post-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.post-card{overflow:hidden;display:flex;flex-direction:column}
.post-card .thumb{width:100%;aspect-ratio:16/9;object-fit:cover;background:var(--page)}
.post-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.post-title{font-size:17.5px;font-weight:600;line-height:1.45}
.post-card:hover .post-title{color:var(--primary)}
.post-summary{font-size:14px;color:#64748B}
.post-meta{margin-top:auto;display:flex;align-items:center;gap:12px;padding-top:14px;border-top:1px solid var(--border);font-size:13px;color:var(--text-3)}
.post-wide{grid-column:span 2;flex-direction:row}
.post-wide .thumb{width:46%;aspect-ratio:auto;height:100%;min-height:230px}
.post-wide .post-body{padding:26px 28px}
.post-wide .post-title{font-size:21px}
.empty-state{
  border:1.5px dashed #CBD5E1;border-radius:var(--radius-card);background:#fff;
  padding:56px 24px;text-align:center;color:var(--text-2);
}
.empty-state svg{margin:0 auto 16px;color:var(--text-3)}
.empty-state p{font-size:15px;margin-bottom:14px}

/* ---------- FAQ ---------- */
.faq-list{max-width:880px}
.faq-item{border-bottom:1px solid var(--border)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 0;background:none;border:0;text-align:left;font-size:16px;font-weight:600;
  cursor:pointer;transition:color .2s ease-out;
}
.faq-q:hover{color:var(--primary)}
.faq-icon{
  width:26px;height:26px;border-radius:999px;border:1px solid var(--border);color:var(--primary);
  display:flex;align-items:center;justify-content:center;flex:0 0 auto;
  transition:transform .2s ease-out,background .2s ease-out,border-color .2s ease-out;
}
.faq-q[aria-expanded="true"] .faq-icon{transform:rotate(45deg);background:var(--primary-soft);border-color:var(--primary-soft)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .2s ease-out}
.faq-a-inner{padding:0 44px 22px 0;font-size:15px;color:var(--text-2);max-width:800px}

/* ---------- 表单 ---------- */
.contact-wrap{display:grid;grid-template-columns:7fr 5fr;gap:24px}
.form-card{padding:32px}
.field{margin-bottom:18px}
.field label{display:block;font-size:13px;color:var(--text-2);margin-bottom:8px;font-weight:500}
.field input,.field textarea{
  width:100%;height:46px;padding:0 14px;border:1px solid var(--input-border);
  border-radius:10px;background:#fff;outline:none;transition:border-color .2s ease-out,box-shadow .2s ease-out;
  font-size:15px;
}
.field textarea{height:110px;padding:12px 14px;resize:vertical;line-height:1.7}
.field input:focus,.field textarea:focus{border-color:var(--primary);box-shadow:0 0 0 4px rgba(36,80,184,.12)}
.field .err{display:none;font-size:13px;color:var(--error);margin-top:6px}
.field.has-error input,.field.has-error textarea{border-color:var(--error)}
.field.has-error .err{display:block}
.form-note{font-size:13px;color:var(--text-3);margin-top:14px}
.form-ok{
  display:none;margin-top:16px;padding:12px 14px;border-radius:10px;background:#ECFDF6;
  color:#0B7A6E;font-size:14px;border:1px solid #C6F1E6;
}
.contact-info{padding:32px;display:flex;flex-direction:column;gap:20px}
.contact-row{display:flex;gap:14px;align-items:flex-start}
.contact-row dt{font-size:13px;color:var(--text-3);margin-bottom:2px}
.contact-row dd{margin:0;font-size:15px;font-weight:500}

/* ---------- CTA 条 / 页脚 ---------- */
.cta-bar{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  padding:28px 32px;display:flex;align-items:center;justify-content:space-between;gap:24px;
  box-shadow:var(--shadow-card);flex-wrap:wrap;
}
.cta-bar h3{font-size:20px;font-weight:700}
.cta-bar p{font-size:14.5px;color:var(--text-2);margin-top:6px}

.site-footer{margin-top:96px}
.footer-cta-wrap{position:relative;z-index:2;margin-bottom:-40px}
.footer-cta{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  padding:28px 32px;display:flex;align-items:center;justify-content:space-between;gap:24px;
  box-shadow:0 16px 40px -20px rgba(15,23,42,.28);flex-wrap:wrap;
}
.footer-cta h3{font-size:20px;font-weight:700}
.footer-cta p{font-size:14.5px;color:var(--text-2);margin-top:6px}
.footer-dark{background:var(--dark);color:#94A3B8;padding:88px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}
.footer-brand .brand-text{color:#fff}
.footer-brand p{font-size:14px;margin-top:16px;max-width:280px;line-height:1.8}
.footer-keywords{margin-top:16px;display:flex;flex-wrap:wrap;gap:8px}
.footer-keywords span{
  font-size:12px;padding:4px 10px;border-radius:999px;background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.10);color:#CBD5E1;
}
.footer-title{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px}
.footer-links li{margin-bottom:10px}
.footer-links a{font-size:14px;color:#94A3B8;transition:color .2s ease-out}
.footer-links a:hover{color:#fff}
.footer-bottom{
  margin-top:56px;padding-top:22px;border-top:1px solid rgba(255,255,255,.10);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;
}
.to-top{
  display:inline-flex;align-items:center;gap:8px;height:38px;padding:0 16px;border-radius:999px;
  border:1px solid rgba(255,255,255,.16);color:#CBD5E1;background:transparent;cursor:pointer;
  transition:all .2s ease-out;font-size:13px;
}
.to-top:hover{color:#fff;border-color:rgba(255,255,255,.4)}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .hero-title{font-size:38px}
}
@media (max-width:1023px){
  .nav-links,.search-box{display:none}
  .menu-btn{display:flex}
  .section{padding:72px 0}
  .hero{padding:56px 0 72px}
  .hero-title{font-size:34px}
  .stat-grid{grid-template-columns:repeat(2,1fr);gap:28px 20px}
  .flow{grid-template-columns:repeat(2,1fr);gap:28px 24px}
  .flow-step:nth-child(2)::after{display:none}
  .contact-wrap{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px 24px}
}
@media (max-width:767px){
  .hero-card{position:static;width:100%;margin-top:16px}
  .hero-media img{aspect-ratio:16/10}
  .post-grid{grid-template-columns:1fr}
  .post-wide{flex-direction:column;grid-column:span 1}
  .post-wide .thumb{width:100%;aspect-ratio:16/9;min-height:0}
  .post-wide .post-body{padding:22px}
  .post-wide .post-title{font-size:18px}
}
@media (max-width:639px){
  .container{padding:0 16px}
  .section{padding:56px 0}
  .hero-title{font-size:29px}
  .hero-sub{font-size:16px}
  .section-title{font-size:23px}
  .stat-num{font-size:28px}
  .flow{grid-template-columns:1fr}
  .flow-step::after{display:none}
  .form-card,.contact-info,.cta-bar,.footer-cta{padding:22px}
  .footer-grid{grid-template-columns:1fr}
  .trust-row{gap:18px}
}

/* roulang page: article */
:root{
  --primary:#2450B8;
  --primary-hover:#1B3F96;
  --primary-soft:#EEF3FF;
  --accent:#E4782F;
  --bg:#F6F8FC;
  --card:#FFFFFF;
  --border:#E8EDF5;
  --border-strong:#DDE4EE;
  --text:#0F172A;
  --text-2:#475569;
  --text-3:#94A3B8;
  --success:#12A594;
  --danger:#D92D20;
  --warning:#D97706;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-card:0 1px 2px rgba(15,23,42,.04),0 8px 24px -12px rgba(15,23,42,.10);
  --shadow-hover:0 16px 40px -16px rgba(15,23,42,.18);
  --ease:200ms ease-out;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  letter-spacing:0;
}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--primary);text-decoration:none;transition:color var(--ease);}
a:hover{color:var(--primary-hover);}
button{font-family:inherit;}
input,button,textarea{font-family:inherit;font-size:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
.mono{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:#fff;
  border-bottom:1px solid var(--border);
  box-shadow:0 1px 2px rgba(15,23,42,.04);
}
.nav-wrap{display:flex;align-items:center;gap:20px;height:68px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;color:var(--text);text-decoration:none;}
.brand:hover{color:var(--text);}
.brand-mark{
  width:34px;height:34px;border-radius:10px;
  display:grid;place-items:center;
  background:var(--primary-soft);color:var(--primary);
  flex-shrink:0;
}
.brand-text{font-size:17px;font-weight:700;letter-spacing:.01em;white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:2px;flex:1;min-width:0;}
.nav-link{
  position:relative;
  padding:8px 12px;
  border-radius:8px;
  font-size:14.5px;
  color:var(--text-2);
  white-space:nowrap;
  transition:color var(--ease),background var(--ease);
}
.nav-link:hover{color:var(--primary);background:var(--primary-soft);}
.nav-link.is-active{color:var(--primary);font-weight:600;}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:-4px;height:2px;
  border-radius:2px;background:var(--primary);
}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto;flex-shrink:0;}
.search-box{
  display:flex;align-items:center;gap:8px;
  height:40px;width:210px;padding:0 14px;
  background:var(--bg);
  border:1px solid transparent;
  border-radius:999px;
  color:var(--text-3);
  transition:all var(--ease);
}
.search-box input{
  flex:1;min-width:0;border:0;background:transparent;outline:none;
  font-size:14px;color:var(--text);
}
.search-box input::placeholder{color:var(--text-3);}
.search-box:focus-within{
  background:#fff;border-color:var(--primary);
  box-shadow:0 0 0 4px rgba(36,80,184,.12);
}
.menu-btn{
  display:none;
  width:40px;height:40px;border-radius:10px;
  border:1px solid var(--border);background:#fff;color:var(--text-2);
  place-items:center;cursor:pointer;
  transition:all var(--ease);
}
.menu-btn:hover{border-color:var(--primary);color:var(--primary);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;border-radius:var(--radius-btn);
  cursor:pointer;text-decoration:none;white-space:nowrap;
  transition:all var(--ease);
}
.btn-primary{background:var(--primary);color:#fff;}
.btn-primary:hover{background:var(--primary-hover);color:#fff;transform:translateY(-2px);box-shadow:0 10px 24px -10px rgba(36,80,184,.55);}
.btn-outline{background:#fff;border-color:var(--border-strong);color:var(--primary);}
.btn-outline:hover{background:var(--primary-soft);border-color:var(--primary);color:var(--primary);}
.btn-pill{border-radius:999px;}
.btn-sm{height:38px;padding:0 18px;font-size:14px;}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;
  height:24px;padding:0 10px;border-radius:999px;
  font-size:12px;font-weight:500;line-height:1;
  background:var(--primary-soft);color:var(--primary);
}
.badge-accent{background:#FDF1E7;color:var(--accent);}

/* ---------- 文章页头部 ---------- */
.article-top{
  background:linear-gradient(180deg,#FFFFFF 0%,#F1F5FF 100%);
  border-bottom:1px solid var(--border);
  padding:22px 0 44px;
}
.article-main{width:100%;max-width:820px;margin:0 auto;}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--text-3);margin-bottom:22px;
}
.breadcrumb a{color:var(--text-2);}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .sep{color:#CBD5E1;}
.breadcrumb .current{color:var(--text-3);max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.article-title{
  font-size:34px;line-height:1.34;font-weight:700;
  letter-spacing:.01em;color:var(--text);
  margin:14px 0 18px;
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:13.5px;color:var(--text-3);
}
.meta-row .meta-item{display:inline-flex;align-items:center;gap:6px;}
.meta-row .dot{color:#CBD5E1;}

/* ---------- 文章主体布局 ---------- */
.article-section{padding:48px 0 0;}
.article-layout{display:grid;grid-template-columns:1fr;gap:40px;align-items:start;}
.article-body{
  font-size:16px;line-height:1.85;color:#1E293B;
  max-width:820px;
}
.article-body p{margin:0 0 1.25em;}
.article-body h2{
  position:relative;
  font-size:26px;line-height:1.35;font-weight:700;color:var(--text);
  margin:44px 0 16px;padding-left:14px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:3px;
  border-radius:2px;background:var(--primary);
}
.article-body h3{
  font-size:20px;line-height:1.4;font-weight:600;color:var(--text);
  margin:32px 0 12px;
}
.article-body h4{font-size:17px;font-weight:600;margin:24px 0 10px;}
.article-body ul,.article-body ol{margin:0 0 1.25em;padding-left:1.4em;}
.article-body ul{list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{margin-bottom:.5em;}
.article-body img{border-radius:var(--radius-img);margin:24px auto;}
.article-body figure{margin:24px 0;}
.article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px;}
.article-body blockquote{
  margin:24px 0;padding:16px 20px;
  border-left:3px solid var(--primary);
  background:var(--primary-soft);
  border-radius:0 10px 10px 0;
  color:var(--text-2);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body table{
  width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;
  background:#fff;border-radius:10px;overflow:hidden;
}
.article-body th{
  background:var(--bg);text-align:left;font-weight:600;color:var(--text);
  padding:12px 14px;border-bottom:1px solid var(--border);white-space:nowrap;
}
.article-body td{padding:12px 14px;border-bottom:1px solid var(--border);color:var(--text-2);}
.article-body a{color:var(--primary);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:var(--primary-hover);}
.article-body hr{border:0;border-top:1px solid var(--border);margin:32px 0;}

/* ---------- 侧栏 ---------- */
.article-side{width:100%;}
.side-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  padding:22px;box-shadow:var(--shadow-card);
}
.side-title{
  display:flex;align-items:center;gap:8px;
  font-size:15px;font-weight:600;color:var(--text);margin-bottom:14px;
}
.side-title::before{
  content:"";width:3px;height:14px;border-radius:2px;background:var(--primary);
}
.toc-list{display:flex;flex-direction:column;gap:2px;}
.toc-link{
  display:block;padding:8px 10px;border-radius:8px;
  font-size:14px;color:var(--text-2);line-height:1.5;
  transition:all var(--ease);
}
.toc-link:hover{background:var(--primary-soft);color:var(--primary);}
.side-empty{font-size:13px;color:var(--text-3);padding:6px 0;}
.hot-list{display:flex;flex-direction:column;}
.hot-item{
  display:block;padding:12px 0;border-bottom:1px dashed var(--border);
  font-size:14px;line-height:1.6;color:var(--text-2);
  transition:color var(--ease);
}
.hot-item:last-child{border-bottom:0;padding-bottom:0;}
.hot-item:hover{color:var(--primary);}
.hot-item span{display:block;font-size:12px;color:var(--text-3);margin-top:4px;}
.side-cta{margin-top:20px;}

/* ---------- 文末 ---------- */
.article-foot{margin-top:44px;}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;align-items:center;padding-top:24px;border-top:1px solid var(--border);}
.tag-label{font-size:13px;color:var(--text-3);margin-right:2px;}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:999px;background:var(--bg);border:1px solid var(--border);
  font-size:13px;color:var(--text-2);transition:all var(--ease);
}
.tag:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-soft);}
.back-row{margin-top:20px;font-size:14px;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--primary);font-weight:500;
}
.link-arrow:hover{gap:10px;}

/* ---------- 相关推荐 ---------- */
.rel-section{padding:56px 0 0;}
.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin-top:28px;}
.rel-card{
  display:flex;flex-direction:column;
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  padding:20px;box-shadow:var(--shadow-card);
  transition:all var(--ease);
}
.rel-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#D8E2F5;}
.rel-card h3{
  font-size:16.5px;line-height:1.5;font-weight:600;color:var(--text);
  margin:10px 0 12px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rel-card:hover h3{color:var(--primary);}
.rel-meta{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  font-size:12.5px;color:var(--text-3);
}

/* ---------- 空态 ---------- */
.empty-state{
  border:1.5px dashed #CBD5E1;border-radius:var(--radius-card);
  padding:56px 24px;text-align:center;background:#fff;
}
.empty-state svg{color:var(--text-3);margin:0 auto 16px;}
.empty-state h3{font-size:17px;font-weight:600;color:var(--text);margin-bottom:8px;}
.empty-state p{font-size:14px;color:var(--text-2);margin-bottom:16px;}

/* ---------- CTA 条 ---------- */
.cta-band{margin-top:72px;}
.cta-inner{
  background:linear-gradient(135deg,#F1F5FF 0%,#FFFFFF 100%);
  border:1px solid var(--border);border-radius:18px;
  padding:34px 38px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;
  box-shadow:var(--shadow-card);
}
.cta-inner h2{font-size:22px;font-weight:700;color:var(--text);margin-bottom:8px;}
.cta-inner p{font-size:15px;color:var(--text-2);}

/* ---------- 页脚 ---------- */
.site-footer{margin-top:96px;}
.footer-cta-wrap{position:relative;z-index:2;transform:translateY(-40px);margin-bottom:-40px;}
.footer-cta{
  background:#fff;border:1px solid var(--border);border-radius:16px;
  padding:30px 36px;box-shadow:var(--shadow-card);
  display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.footer-cta h3{font-size:19px;font-weight:700;color:var(--text);margin-bottom:6px;}
.footer-cta p{font-size:14px;color:var(--text-2);}
.footer-dark{background:#101C33;padding:72px 0 24px;color:#94A3B8;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;}
.footer-brand .brand-text{display:inline-block;color:#fff;font-size:18px;font-weight:700;margin-bottom:14px;}
.footer-brand p{font-size:14px;line-height:1.8;color:#94A3B8;max-width:320px;}
.footer-keywords{margin-top:16px;display:flex;flex-wrap:wrap;gap:8px;}
.footer-keywords span{
  font-size:12px;padding:4px 10px;border-radius:999px;
  background:rgba(255,255,255,.08);color:#CBD5E1;
}
.footer-title{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px;}
.footer-links li{margin-bottom:10px;}
.footer-links a{font-size:14px;color:#94A3B8;}
.footer-links a:hover{color:#fff;}
.footer-bottom{
  margin-top:44px;padding-top:20px;
  border-top:1px solid rgba(255,255,255,.10);
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:13px;color:#64748B;
}
.to-top{
  display:inline-flex;align-items:center;gap:6px;
  background:transparent;border:1px solid rgba(255,255,255,.18);
  color:#CBD5E1;font-size:13px;padding:7px 14px;border-radius:999px;
  cursor:pointer;transition:all var(--ease);
}
.to-top:hover{border-color:#fff;color:#fff;}

/* ---------- 移动抽屉 ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(15,23,42,.45);
  opacity:0;visibility:hidden;transition:all var(--ease);z-index:60;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;width:82%;max-width:360px;
  background:#fff;border-radius:16px 0 0 16px;z-index:70;
  transform:translateX(100%);transition:transform var(--ease);
  display:flex;flex-direction:column;padding:22px 20px;
  box-shadow:-10px 0 40px -20px rgba(15,23,42,.4);
}
.mobile-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;}
.drawer-close{
  width:36px;height:36px;border-radius:10px;border:1px solid var(--border);
  background:#fff;color:var(--text-2);display:grid;place-items:center;cursor:pointer;
}
.drawer-nav{display:flex;flex-direction:column;gap:2px;flex:1;overflow-y:auto;}
.drawer-nav a{
  padding:13px 12px;border-radius:10px;font-size:15px;color:var(--text-2);
}
.drawer-nav a:hover,.drawer-nav a.is-active{background:var(--primary-soft);color:var(--primary);font-weight:600;}
.drawer-foot{margin-top:16px;padding-top:16px;border-top:1px solid var(--border);}
.drawer-foot .btn{width:100%;}

/* ---------- 响应式 ---------- */
@media (min-width:1024px){
  .article-layout{grid-template-columns:minmax(0,1fr) 280px;gap:48px;}
  .side-card{position:sticky;top:88px;}
}
@media (max-width:1023px){
  .nav-links{display:none;}
  .search-box{width:180px;}
  .menu-btn{display:grid;}
  .article-title{font-size:28px;}
  .article-body h2{font-size:23px;}
}
@media (max-width:900px){
  .rel-grid{grid-template-columns:1fr 1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:28px;}
}
@media (max-width:767px){
  .search-box{display:none;}
  .nav-wrap{gap:12px;}
  .cta-inner h2{font-size:19px;}
  .footer-cta{flex-direction:column;align-items:flex-start;padding:24px;}
}
@media (max-width:640px){
  .container{padding:0 16px;}
  .article-top{padding:16px 0 32px;}
  .article-title{font-size:22px;line-height:1.4;}
  .article-body{font-size:15.5px;line-height:1.8;}
  .article-body h2{font-size:20px;margin:34px 0 12px;}
  .article-body h3{font-size:17.5px;}
  .article-body table{display:block;overflow-x:auto;white-space:nowrap;}
  .rel-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .footer-cta-wrap{transform:translateY(-24px);margin-bottom:-24px;}
  .footer-dark{padding-top:56px;}
  .site-footer{margin-top:64px;}
  .rel-section{padding:44px 0 0;}
}
@media (max-width:520px){
  .brand-text{font-size:15px;}
  .badge{font-size:11.5px;}
  .btn{height:42px;padding:0 18px;font-size:14px;}
  .btn-sm{height:36px;padding:0 16px;}
}

/* roulang page: category2 */
:root{
  --primary:#2450B8;
  --primary-hover:#1B3F96;
  --primary-soft:#EEF3FF;
  --accent:#E4782F;
  --page-bg:#F6F8FC;
  --card:#FFFFFF;
  --border:#E8EDF5;
  --input-border:#DDE4EE;
  --ink:#0F172A;
  --muted:#475569;
  --muted-2:#94A3B8;
  --success:#12A594;
  --danger:#D92D20;
  --warning:#D97706;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-card:0 1px 2px rgba(15,23,42,.04), 0 8px 24px -12px rgba(15,23,42,.10);
  --shadow-hover:0 16px 40px -16px rgba(15,23,42,.18);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  background:var(--page-bg);
  color:var(--ink);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--radius-img);}
a{color:var(--primary);text-decoration:none;}
a:hover{color:var(--primary-hover);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;line-height:1.3;letter-spacing:.01em;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
.num{font-variant-numeric:tabular-nums;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:50;background:#fff;
  border-bottom:1px solid var(--border);
  box-shadow:0 1px 2px rgba(15,23,42,.04);
}
.nav-wrap{display:flex;align-items:center;gap:24px;height:68px;}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);font-weight:700;font-size:18px;}
.brand:hover{color:var(--ink);}
.brand-mark{
  width:36px;height:36px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;
  background:var(--primary-soft);color:var(--primary);flex:0 0 auto;
}
.brand-text{white-space:nowrap;letter-spacing:.01em;}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:8px;}
.nav-link{
  position:relative;color:var(--muted);font-size:15px;font-weight:500;padding:22px 0;white-space:nowrap;
  transition:color .2s ease-out;
}
.nav-link:hover{color:var(--primary);}
.nav-link.is-active{color:var(--primary);font-weight:600;}
.nav-link.is-active::after{
  content:"";position:absolute;left:0;right:0;bottom:16px;height:2px;border-radius:2px;background:var(--primary);
}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}
.search-box{
  display:flex;align-items:center;gap:8px;height:40px;padding:0 14px;border-radius:999px;
  background:#F1F4F9;color:var(--muted-2);border:1px solid transparent;transition:all .2s ease-out;
}
.search-box:focus-within{background:#fff;border-color:var(--primary);box-shadow:0 0 0 4px rgba(36,80,184,.12);}
.search-box input{
  border:0;outline:none;background:transparent;font-size:14px;color:var(--ink);width:150px;
}
.search-box input::placeholder{color:var(--muted-2);}
.menu-btn{
  display:none;align-items:center;justify-content:center;width:40px;height:40px;border-radius:10px;
  border:1px solid var(--border);background:#fff;color:var(--ink);cursor:pointer;
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;border-radius:var(--radius-btn);
  padding:12px 22px;border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease-out,background-color .2s ease-out,color .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 6px 18px -10px rgba(36,80,184,.7);}
.btn-primary:hover{background:var(--primary-hover);color:#fff;transform:translateY(-2px);}
.btn-outline{background:#fff;color:var(--primary);border-color:var(--primary);}
.btn-outline:hover{background:var(--primary-soft);color:var(--primary-hover);transform:translateY(-2px);}
.btn-pill{border-radius:999px;}
.btn-sm{padding:9px 18px;font-size:14px;}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  font-size:12px;font-weight:600;background:var(--primary-soft);color:var(--primary);white-space:nowrap;
}
.badge-accent{background:#FDF1E7;color:#B2551A;}
.link-more{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--primary);
}
.link-more:hover{text-decoration:underline;text-underline-offset:3px;}

/* ============ 页头大图 + 覆盖标题条 ============ */
.page-hero{padding-bottom:0;margin-bottom:56px;}
.hero-media{
  position:relative;height:420px;background-size:cover;background-position:center;
  background-repeat:no-repeat;background-color:#1B3F96;
}
.hero-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(15,23,42,.42) 0%,rgba(15,23,42,.62) 100%);
}
.hero-media-inner{position:relative;z-index:2;padding-top:26px;}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.82);}
.breadcrumb a{color:rgba(255,255,255,.82);}
.breadcrumb a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.breadcrumb .sep{opacity:.6;}
.hero-title-bar{
  position:relative;z-index:3;margin-top:-136px;background:#fff;border:1px solid var(--border);
  border-radius:18px;box-shadow:0 20px 50px -24px rgba(15,23,42,.28);padding:36px 40px;
}
.hero-title-bar h1{font-size:34px;font-weight:700;max-width:820px;}
.hero-title-bar .lead{margin-top:16px;font-size:16px;color:var(--muted);max-width:760px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-bottom:18px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px;}

/* ============ 通用板块 ============ */
.section{padding:0 0 96px;}
.section-tight{padding-bottom:72px;}
.section-head{margin-bottom:36px;}
.section-head.center{text-align:center;max-width:720px;margin-left:auto;margin-right:auto;}
.section-head.split{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--primary);
  background:var(--primary-soft);border-radius:999px;padding:5px 12px;
}
.section-head h2{font-size:28px;font-weight:700;margin-top:14px;}
.section-head p{margin-top:10px;font-size:15px;color:var(--muted);max-width:660px;}

/* ============ 深色数据带 ============ */
.band-dark{
  background:#101C33;color:#fff;border-radius:18px;padding:44px 40px;margin-bottom:96px;
}
.band-dark h2{font-size:24px;font-weight:700;color:#fff;}
.band-dark .band-desc{color:#A9B6CC;font-size:15px;margin-top:12px;max-width:720px;}
.band-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:32px;}
.band-cell{border-left:2px solid rgba(228,120,47,.85);padding-left:18px;}
.band-cell .num-value{font-size:30px;font-weight:700;font-variant-numeric:tabular-nums;letter-spacing:.01em;}
.band-cell .num-label{font-size:14px;color:#A9B6CC;margin-top:6px;}

/* ============ 2×2 卡片网格 ============ */
.grid-2x2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.v-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);padding:28px;display:flex;flex-direction:column;gap:14px;
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.v-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#D8E1F2;}
.icon-box{
  width:44px;height:44px;border-radius:12px;background:var(--primary-soft);color:var(--primary);
  display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto;
}
.v-card h3{font-size:19px;font-weight:600;}
.v-card p{font-size:15px;color:var(--muted);}
.v-card .card-foot{margin-top:auto;padding-top:8px;}

/* ============ 要点清单 ============ */
.checklist-wrap{
  background:#fff;border:1px solid var(--border);border-radius:18px;padding:40px;box-shadow:var(--shadow-card);
}
.checklist{display:grid;grid-template-columns:repeat(2,1fr);gap:18px 32px;margin-top:28px;}
.check-item{display:flex;gap:12px;align-items:flex-start;}
.check-icon{
  width:22px;height:22px;border-radius:999px;background:var(--primary-soft);color:var(--primary);
  display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto;margin-top:3px;
}
.check-item strong{display:block;font-size:15px;font-weight:600;}
.check-item span.desc{font-size:14px;color:var(--muted);}

/* ============ FAQ ============ */
.faq{border-top:1px solid var(--border);}
.faq-item{border-bottom:1px solid var(--border);}
.faq-q{
  width:100%;background:transparent;border:0;padding:22px 0;display:flex;align-items:center;
  justify-content:space-between;gap:16px;text-align:left;font-size:16px;font-weight:600;color:var(--ink);
  cursor:pointer;transition:color .2s ease-out;
}
.faq-q:hover{color:var(--primary);}
.faq-toggle{
  width:28px;height:28px;border-radius:999px;border:1px solid var(--border);color:var(--primary);
  display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto;
  transition:transform .2s ease-out,background-color .2s ease-out;
}
.faq-item.is-open .faq-toggle{transform:rotate(45deg);background:var(--primary-soft);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .2s ease-out;}
.faq-item.is-open .faq-a{max-height:360px;}
.faq-a p{padding:0 46px 22px 0;font-size:15px;color:var(--muted);}

/* ============ CTA 条 ============ */
.cta-strip{
  background:var(--primary-soft);border:1px solid #DCE5FA;border-radius:18px;padding:32px 36px;
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
}
.cta-strip h2{font-size:22px;font-weight:700;}
.cta-strip p{font-size:15px;color:var(--muted);margin-top:8px;}

/* ============ 页脚 ============ */
.site-footer{margin-top:24px;background:transparent;}
.footer-cta-wrap{position:relative;z-index:2;}
.footer-cta{
  position:relative;top:-40px;background:#fff;border:1px solid var(--border);border-radius:18px;
  box-shadow:0 20px 50px -30px rgba(15,23,42,.4);padding:30px 34px;
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
}
.footer-cta h3{font-size:20px;font-weight:700;}
.footer-cta p{font-size:14px;color:var(--muted);margin-top:6px;}
.footer-dark{background:#101C33;padding:24px 0 28px;margin-top:-40px;color:#94A3B8;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;padding-top:36px;}
.footer-brand .brand-text{color:#fff;font-size:18px;font-weight:700;display:block;margin-bottom:12px;}
.footer-brand p{font-size:14px;color:#94A3B8;max-width:330px;}
.footer-keywords{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}
.footer-keywords span{
  font-size:12px;color:#C4CEDF;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.1);
  border-radius:999px;padding:4px 10px;
}
.footer-title{font-size:14px;font-weight:600;color:#fff;margin-bottom:14px;}
.footer-links li{margin-bottom:10px;}
.footer-links a{font-size:14px;color:#94A3B8;transition:color .2s ease-out;}
.footer-links a:hover{color:#fff;}
.footer-links span{font-size:14px;color:#94A3B8;}
.footer-bottom{
  margin-top:32px;padding-top:20px;border-top:1px solid rgba(255,255,255,.08);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;
}
.to-top{
  display:inline-flex;align-items:center;gap:6px;background:transparent;border:1px solid rgba(255,255,255,.18);
  color:#C4CEDF;border-radius:999px;padding:7px 14px;font-size:13px;cursor:pointer;transition:all .2s ease-out;
}
.to-top:hover{color:#fff;border-color:rgba(255,255,255,.45);}

/* ============ 移动端抽屉 ============ */
.drawer-mask{
  position:fixed;inset:0;background:rgba(15,23,42,.45);opacity:0;visibility:hidden;
  transition:opacity .2s ease-out,visibility .2s ease-out;z-index:60;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:82%;max-width:340px;background:#fff;z-index:70;
  border-radius:16px 0 0 16px;transform:translateX(102%);transition:transform .24s ease-out;
  display:flex;flex-direction:column;padding:20px;box-shadow:-20px 0 50px -30px rgba(15,23,42,.5);
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.drawer-close{
  width:36px;height:36px;border-radius:10px;border:1px solid var(--border);background:#fff;color:var(--ink);
  display:inline-flex;align-items:center;justify-content:center;cursor:pointer;
}
.drawer-nav a{
  display:block;font-size:15px;line-height:1.6;color:var(--muted);padding:14px 4px;
  border-bottom:1px solid var(--border);font-weight:500;
}
.drawer-nav a.is-active{color:var(--primary);font-weight:600;}
.drawer-foot{margin-top:auto;padding-top:20px;}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .nav-links{display:none;}
  .search-box{display:none;}
  .menu-btn{display:inline-flex;}
  .hero-media{height:340px;}
  .hero-title-bar{margin-top:-116px;padding:30px;}
  .hero-title-bar h1{font-size:28px;}
  .section{padding-bottom:72px;}
  .band-dark{margin-bottom:72px;padding:36px 28px;}
  .band-grid{grid-template-columns:repeat(2,1fr);gap:24px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:768px){
  .grid-2x2{grid-template-columns:1fr;}
  .checklist{grid-template-columns:1fr;}
  .checklist-wrap{padding:28px 22px;}
  .section-head.split{flex-direction:column;align-items:flex-start;}
  .footer-cta{padding:24px;top:-28px;}
  .footer-dark{margin-top:-28px;}
}
@media (max-width:640px){
  .container{padding:0 16px;}
  .hero-media{height:260px;}
  .hero-title-bar{margin-top:-88px;padding:22px 20px;border-radius:16px;}
  .hero-title-bar h1{font-size:24px;}
  .hero-title-bar .lead{font-size:15px;}
  .section{padding-bottom:56px;}
  .section-head h2{font-size:24px;}
  .band-dark{margin-bottom:56px;padding:28px 20px;border-radius:14px;}
  .band-grid{grid-template-columns:1fr 1fr;gap:20px;}
  .band-cell .num-value{font-size:24px;}
  .v-card{padding:22px;}
  .cta-strip{padding:24px 20px;}
  .footer-grid{grid-template-columns:1fr;gap:24px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

/* roulang page: category1 */
:root{
  --primary:#2450B8;
  --primary-hover:#1B3F96;
  --primary-soft:#EEF3FF;
  --accent:#E4782F;
  --page:#F6F8FC;
  --card:#FFFFFF;
  --border:#E8EDF5;
  --input-border:#DDE4EE;
  --text:#0F172A;
  --text-2:#475569;
  --text-3:#94A3B8;
  --success:#12A594;
  --danger:#D92D20;
  --warning:#D97706;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-card:0 1px 2px rgba(15,23,42,.04), 0 8px 24px -12px rgba(15,23,42,.10);
  --shadow-hover:0 16px 40px -16px rgba(15,23,42,.18);
  --section-y:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--page);
  letter-spacing:0;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0;}
ul,ol{list-style:none;}
a{color:var(--primary);text-decoration:none;transition:color .2s ease-out,text-decoration-color .2s ease-out;}
a:hover{color:var(--primary-hover);}
img{max-width:100%;display:block;}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input,textarea{font-family:inherit;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px;}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:#fff;
  border-bottom:1px solid var(--border);
  box-shadow:0 1px 2px rgba(15,23,42,.04);
}
.nav-wrap{display:flex;align-items:center;gap:24px;height:68px;}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text);flex:0 0 auto;}
.brand:hover{color:var(--text);}
.brand-mark{
  width:34px;height:34px;border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--primary-soft);color:var(--primary);
}
.brand-text{font-size:18px;font-weight:700;letter-spacing:.01em;}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:8px;}
.nav-link{
  position:relative;
  font-size:15px;color:var(--text-2);padding:22px 0;font-weight:500;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:14px;height:2px;
  background:var(--primary);border-radius:2px;transform:scaleX(0);transition:transform .2s ease-out;
}
.nav-link:hover{color:var(--primary);}
.nav-link.is-active{color:var(--primary);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:12px;}
.search-box{
  display:flex;align-items:center;gap:8px;
  height:40px;padding:0 14px;border-radius:999px;
  background:#F3F6FB;border:1px solid transparent;color:var(--text-3);
  transition:background .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.search-box input{
  width:150px;border:0;background:transparent;outline:none;font-size:14px;color:var(--text);
}
.search-box input::placeholder{color:var(--text-3);}
.search-box:focus-within{
  background:#fff;border-color:var(--primary);
  box-shadow:0 0 0 4px rgba(36,80,184,.12);
}
.menu-btn{
  display:none;width:40px;height:40px;border-radius:10px;
  align-items:center;justify-content:center;color:var(--text-2);
  border:1px solid var(--border);
}
.menu-btn:hover{background:#F3F6FB;color:var(--primary);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  font-size:15px;font-weight:600;line-height:1;
  padding:14px 24px;border-radius:var(--radius-btn);
  border:1px solid transparent;
  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-primary{background:var(--primary);color:#fff;}
.btn-primary:hover{background:var(--primary-hover);color:#fff;transform:translateY(-2px);box-shadow:0 12px 24px -12px rgba(36,80,184,.55);}
.btn-outline{background:#fff;color:var(--primary);border-color:var(--primary);}
.btn-outline:hover{background:var(--primary-soft);color:var(--primary-hover);}
.btn-pill{border-radius:999px;}
.btn-sm{padding:11px 20px;font-size:14px;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--primary);
}
.link-arrow svg{transition:transform .2s ease-out;}
.link-arrow:hover{color:var(--primary-hover);text-decoration:underline;text-underline-offset:3px;}
.link-arrow:hover svg{transform:translateX(3px);}

/* ---------- page hero ---------- */
.hero-page{
  position:relative;overflow:hidden;
  background:linear-gradient(180deg,#FFFFFF 0%,#F1F5FF 100%);
  padding:72px 0 64px;
}
.hero-page::after{
  content:"";position:absolute;right:-140px;top:-120px;width:420px;height:420px;border-radius:50%;
  background:rgba(36,80,184,.06);pointer-events:none;
}
.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:6fr 6fr;gap:56px;align-items:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  height:28px;padding:0 14px;border-radius:999px;
  background:var(--primary-soft);color:var(--primary);
  font-size:13px;font-weight:600;letter-spacing:.01em;
  margin-bottom:18px;
}
.hero-title{
  font-size:40px;line-height:1.3;font-weight:700;letter-spacing:.01em;color:var(--text);
  margin-bottom:18px;
}
.hero-sub{font-size:17px;line-height:1.85;color:var(--text-2);max-width:560px;margin-bottom:28px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px;}
.hero-points{display:flex;flex-wrap:wrap;gap:22px;}
.hero-point{display:flex;align-items:center;gap:9px;font-size:14px;color:var(--text-2);}
.hero-point svg{color:var(--success);flex:0 0 auto;}
.hero-media{position:relative;}
.hero-media img{
  width:100%;height:340px;object-fit:cover;border-radius:16px;
  box-shadow:0 1px 2px rgba(15,23,42,.04), 0 24px 48px -24px rgba(15,23,42,.28);
}
.hero-badge{
  position:absolute;left:-16px;bottom:-20px;background:#fff;
  border:1px solid var(--border);border-radius:14px;padding:16px 18px;
  box-shadow:var(--shadow-card);min-width:210px;
}
.hero-badge .row{display:flex;justify-content:space-between;gap:14px;font-size:13px;color:var(--text-2);padding:3px 0;}
.hero-badge .row b{color:var(--text);font-weight:600;}

/* ---------- generic section ---------- */
.section{padding:var(--section-y) 0;}
.section-tight{padding:64px 0;}
.section-head{margin-bottom:44px;}
.section-head.center{text-align:center;max-width:720px;margin-left:auto;margin-right:auto;}
.section-head.split{display:grid;grid-template-columns:7fr 5fr;gap:32px;align-items:end;}
.section-title{font-size:30px;line-height:1.35;font-weight:700;letter-spacing:.01em;}
.section-desc{margin-top:12px;font-size:16px;color:var(--text-2);max-width:660px;}
.section-head.center .section-desc{margin-left:auto;margin-right:auto;}
.section-head.split .section-desc{margin-top:10px;}
.section-side{display:flex;justify-content:flex-end;align-items:flex-end;}

/* ---------- split rows ---------- */
.split-row{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:center;}
.split-row.is-reverse{grid-template-columns:7fr 5fr;}
.split-row + .split-row{margin-top:64px;}
.split-media img{
  width:100%;height:280px;object-fit:cover;border-radius:var(--radius-img);
  box-shadow:var(--shadow-card);
}
.split-index{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:50%;
  border:1px solid var(--accent);color:var(--accent);
  font-size:14px;font-weight:600;margin-bottom:16px;
}
.split-title{font-size:23px;font-weight:700;line-height:1.4;margin-bottom:14px;}
.split-text{font-size:16px;color:var(--text-2);line-height:1.85;margin-bottom:16px;}
.field-list{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:18px;}
.chip{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  border-radius:999px;background:var(--primary-soft);color:var(--primary);
  font-size:12px;font-weight:600;
}
.chip-accent{background:#FDF1E8;color:var(--accent);}

/* ---------- flow ---------- */
.flow-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative;}
.flow-item{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  padding:26px 24px;box-shadow:var(--shadow-card);position:relative;
  transition:transform .2s ease-out,box-shadow .2s ease-out;
}
.flow-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);}
.flow-num{
  width:36px;height:36px;border-radius:50%;
  border:1.5px solid var(--primary);color:var(--primary);
  display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:700;margin-bottom:16px;
}
.flow-item h3{font-size:17px;font-weight:600;margin-bottom:10px;}
.flow-item p{font-size:14px;color:var(--text-2);line-height:1.8;}
.flow-grid::before{
  content:"";position:absolute;top:44px;left:12%;right:12%;height:0;
  border-top:1.5px dashed #C9D6EE;z-index:0;
}
.flow-item{position:relative;z-index:1;}

/* ---------- band ---------- */
.band{background:#F1F4FA;padding:56px 0;}
.band-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.band-item{text-align:center;}
.band-num{font-size:34px;font-weight:700;color:var(--primary);line-height:1.2;}
.band-label{margin-top:6px;font-size:14px;color:var(--text-2);}

/* ---------- scene cards ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.scene-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  padding:26px 24px;box-shadow:var(--shadow-card);
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.scene-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#D6E0F5;}
.icon-box{
  width:44px;height:44px;border-radius:12px;
  background:var(--primary-soft);color:var(--primary);
  display:flex;align-items:center;justify-content:center;margin-bottom:16px;
}
.scene-card h3{font-size:17px;font-weight:600;margin-bottom:10px;line-height:1.5;}
.scene-card p{font-size:14px;color:var(--text-2);line-height:1.8;}

/* ---------- faq ---------- */
.faq-wrap{background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);padding:8px 28px;box-shadow:var(--shadow-card);}
.faq-item{border-bottom:1px solid var(--border);}
.faq-item:last-child{border-bottom:0;}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:22px 0;text-align:left;font-size:16px;font-weight:600;color:var(--text);
}
.faq-q:hover{color:var(--primary);}
.faq-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  border:1px solid var(--border);color:var(--primary);
  display:flex;align-items:center;justify-content:center;
  transition:transform .2s ease-out,background-color .2s ease-out;
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);background:var(--primary-soft);}
.faq-a{display:none;padding:0 0 22px;font-size:15px;color:var(--text-2);line-height:1.85;max-width:860px;}
.faq-item.is-open .faq-a{display:block;}

/* ---------- cta band ---------- */
.cta-band{
  background:var(--primary-soft);
  border-top:1px solid #DCE6FA;border-bottom:1px solid #DCE6FA;
  padding:40px 0;
}
.cta-band-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;}
.cta-band h2{font-size:22px;font-weight:700;line-height:1.4;}
.cta-band p{margin-top:6px;font-size:15px;color:var(--text-2);}

/* ---------- footer ---------- */
.site-footer{margin-top:0;}
.footer-cta-wrap{padding-top:0;transform:translateY(-40px);margin-bottom:-40px;}
.footer-cta{
  background:#fff;border:1px solid var(--border);border-radius:18px;
  padding:32px 36px;box-shadow:0 16px 40px -20px rgba(15,23,42,.22);
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
}
.footer-cta h3{font-size:20px;font-weight:700;line-height:1.4;}
.footer-cta p{margin-top:8px;font-size:15px;color:var(--text-2);}
.footer-dark{background:#101C33;padding:88px 0 0;color:#94A3B8;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px;}
.footer-brand .brand-text{color:#fff;font-size:18px;font-weight:700;}
.footer-brand p{margin-top:14px;font-size:14px;line-height:1.85;color:#94A3B8;max-width:320px;}
.footer-keywords{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;}
.footer-keywords span{
  font-size:12px;color:#C3CEDF;border:1px solid #26364F;
  border-radius:999px;padding:4px 10px;
}
.footer-title{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px;}
.footer-links li{margin-bottom:10px;}
.footer-links a{font-size:14px;color:#94A3B8;}
.footer-links a:hover{color:#fff;}
.footer-bottom{
  border-top:1px solid #1D2A42;padding:20px 0 26px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#7C8CA6;
}
.to-top{
  display:inline-flex;align-items:center;gap:6px;font-size:13px;color:#94A3B8;
  border:1px solid #26364F;border-radius:999px;padding:8px 14px;
  transition:color .2s ease-out,border-color .2s ease-out,background-color .2s ease-out;
}
.to-top:hover{color:#fff;border-color:#3B5074;background:#16233B;}

/* ---------- mobile drawer ---------- */
.drawer-overlay{
  position:fixed;inset:0;background:rgba(15,23,42,.45);
  opacity:0;visibility:hidden;transition:opacity .2s ease-out,visibility .2s ease-out;z-index:60;
}
.drawer-overlay.is-open{opacity:1;visibility:visible;}
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;width:82%;max-width:360px;background:#fff;
  border-top-left-radius:16px;border-bottom-left-radius:16px;
  transform:translateX(100%);transition:transform .25s ease-out;z-index:61;
  display:flex;flex-direction:column;padding:22px 22px 24px;
}
.mobile-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.drawer-close{width:36px;height:36px;border-radius:10px;border:1px solid var(--border);display:flex;align-items:center;justify-content:center;color:var(--text-2);}
.drawer-links a{
  display:block;padding:14px 2px;font-size:15px;color:var(--text-2);
  border-bottom:1px solid var(--border);
}
.drawer-links a.is-active{color:var(--primary);font-weight:600;}
.drawer-foot{margin-top:auto;padding-top:20px;}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  :root{--section-y:72px;}
  .nav-links,.search-box{display:none;}
  .menu-btn{display:inline-flex;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero-title{font-size:32px;}
  .hero-media img{height:280px;}
  .hero-badge{position:static;margin-top:16px;left:auto;bottom:auto;}
  .section-head.split{grid-template-columns:1fr;align-items:start;}
  .section-side{justify-content:flex-start;}
  .split-row,.split-row.is-reverse{grid-template-columns:1fr;gap:24px;}
  .split-row.is-reverse .split-media{order:-1;}
  .split-media img{height:230px;}
  .flow-grid{grid-template-columns:repeat(2,1fr);}
  .flow-grid::before{display:none;}
  .band-grid{grid-template-columns:repeat(2,1fr);gap:32px;}
  .scene-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px;}
  .footer-cta{padding:26px 24px;}
}
@media (max-width:639px){
  :root{--section-y:56px;}
  .container{padding:0 16px;}
  .brand-text{font-size:16px;}
  .hero-page{padding:48px 0 44px;}
  .hero-title{font-size:27px;}
  .hero-sub{font-size:15px;}
  .hero-actions{gap:10px;}
  .hero-actions .btn{width:100%;}
  .hero-media img{height:210px;}
  .section-title{font-size:23px;}
  .split-title{font-size:19px;}
  .scene-grid{grid-template-columns:1fr;}
  .flow-grid{grid-template-columns:1fr;}
  .band-grid{grid-template-columns:repeat(2,1fr);}
  .band-num{font-size:26px;}
  .faq-wrap{padding:4px 18px;}
  .faq-q{font-size:15px;padding:18px 0;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-cta-wrap{transform:translateY(-28px);margin-bottom:-28px;}
  .footer-dark{padding-top:64px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .cta-band-inner{flex-direction:column;align-items:flex-start;}
  .cta-band-inner .btn{width:100%;}
}

/* roulang page: category3 */
:root{
  --primary:#2450B8;
  --primary-hover:#1B3F96;
  --primary-soft:#EEF3FF;
  --accent:#E4782F;
  --accent-soft:#FDF2E9;
  --bg:#F6F8FC;
  --card:#FFFFFF;
  --border:#E8EDF5;
  --border-strong:#DDE4EE;
  --text:#0F172A;
  --text-2:#475569;
  --text-3:#94A3B8;
  --success:#12A594;
  --danger:#D92D20;
  --warn:#D97706;
  --radius-card:14px;
  --radius-img:12px;
  --radius-pill:999px;
  --shadow-sm:0 1px 2px rgba(15,23,42,.04),0 8px 24px -12px rgba(15,23,42,.10);
  --shadow-hover:0 16px 40px -16px rgba(15,23,42,.18);
  --tr:200ms ease-out;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  letter-spacing:.01em;
}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700;letter-spacing:.015em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}

body .container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:20px;
  padding-right:20px;
}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:50;
  background:#fff;
  border-bottom:1px solid var(--border);
  box-shadow:0 1px 2px rgba(15,23,42,.04),0 8px 24px -22px rgba(15,23,42,.35);
}
.nav-wrap{
  height:68px;
  display:flex;
  align-items:center;
  gap:20px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  font-weight:700;
  font-size:17px;
  color:var(--text);
}
.brand-mark{
  width:34px;height:34px;
  border-radius:10px;
  background:var(--primary-soft);
  color:var(--primary);
  display:grid;place-items:center;
  transition:var(--tr);
}
.brand:hover .brand-mark{background:var(--primary);color:#fff}
.brand-text{letter-spacing:.02em}
.nav-links{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:8px;
}
.nav-link{
  position:relative;
  padding:8px 12px;
  font-size:15px;
  color:var(--text-2);
  border-radius:8px;
  transition:color var(--tr),background var(--tr);
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:2px;
  height:2px;
  background:transparent;
  border-radius:2px;
  transition:background var(--tr);
}
.nav-link:hover{color:var(--primary);background:var(--primary-soft)}
.nav-link.is-active{color:var(--primary);font-weight:600}
.nav-link.is-active::after{background:var(--primary)}
.nav-actions{
  margin-left:auto;
  display:flex;
  align-items:center;
  gap:12px;
}
.search-box{
  display:flex;
  align-items:center;
  gap:8px;
  height:40px;
  padding:0 14px;
  background:#F1F4F9;
  border:1px solid transparent;
  border-radius:var(--radius-pill);
  color:var(--text-3);
  transition:var(--tr);
}
.search-box:focus-within{
  background:#fff;
  border-color:var(--primary);
  box-shadow:0 0 0 4px rgba(36,80,184,.12);
  color:var(--primary);
}
.search-box input{
  width:150px;
  border:0;
  background:transparent;
  outline:none;
  font-size:14px;
  color:var(--text);
  font-family:inherit;
}
.search-box input::placeholder{color:var(--text-3)}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 24px;
  font-size:15px;
  font-weight:600;
  border-radius:var(--radius-pill);
  border:1px solid transparent;
  transition:transform var(--tr),background var(--tr),box-shadow var(--tr),color var(--tr),border-color var(--tr);
  white-space:nowrap;
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 8px 20px -12px rgba(36,80,184,.7)}
.btn-primary:hover{background:var(--primary-hover);transform:translateY(-2px);box-shadow:0 14px 28px -14px rgba(36,80,184,.75)}
.btn-primary:active{transform:translateY(0)}
.btn-outline{background:#fff;color:var(--primary);border-color:var(--primary)}
.btn-outline:hover{background:var(--primary-soft);transform:translateY(-2px)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-pill{border-radius:var(--radius-pill)}

.menu-btn{
  display:none;
  width:42px;height:42px;
  border:1px solid var(--border);
  border-radius:10px;
  background:#fff;
  color:var(--text-2);
  align-items:center;justify-content:center;
  transition:var(--tr);
}
.menu-btn:hover{border-color:var(--primary);color:var(--primary)}

/* ---------- 移动抽屉 ---------- */
.drawer-mask{
  position:fixed;inset:0;
  background:rgba(15,23,42,.45);
  z-index:60;
  opacity:0;
  pointer-events:none;
  transition:opacity var(--tr);
}
.drawer-mask.is-open{opacity:1;pointer-events:auto}
.drawer{
  position:fixed;
  top:0;right:0;
  width:82%;
  max-width:340px;
  height:100%;
  background:#fff;
  border-radius:16px 0 0 16px;
  z-index:61;
  transform:translateX(105%);
  transition:transform 260ms ease-out;
  display:flex;
  flex-direction:column;
  padding:20px;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding-bottom:16px;
  border-bottom:1px solid var(--border);
}
.drawer-close{
  width:38px;height:38px;
  border:1px solid var(--border);
  background:#fff;
  border-radius:10px;
  color:var(--text-2);
  display:grid;place-items:center;
}
.drawer-close:hover{border-color:var(--primary);color:var(--primary)}
.drawer-nav{display:flex;flex-direction:column;margin-top:12px}
.drawer-nav a{
  padding:14px 4px;
  font-size:15px;
  color:var(--text-2);
  border-bottom:1px solid var(--border);
  transition:var(--tr);
}
.drawer-nav a:hover,.drawer-nav a.is-active{color:var(--primary);font-weight:600}
.drawer-cta{margin-top:auto}

/* ---------- 标题带 ---------- */
.page-band{
  background:linear-gradient(180deg,#FFFFFF 0%,#F1F5FF 100%);
  border-bottom:1px solid var(--border);
  padding:32px 0 36px;
}
.breadcrumb{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:13px;
  color:var(--text-3);
  margin-bottom:16px;
}
.breadcrumb a{color:var(--text-2);transition:var(--tr)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:#CBD5E1}
.breadcrumb .current{color:var(--text-3)}
.page-title{
  font-size:34px;
  font-weight:700;
  max-width:820px;
  letter-spacing:.01em;
}
.page-sub{
  margin-top:12px;
  max-width:760px;
  font-size:17px;
  color:var(--text-2);
}
.tag-row{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:20px;
}
.tag{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 10px;
  font-size:12px;
  border-radius:var(--radius-pill);
  background:var(--primary-soft);
  color:var(--primary);
  font-weight:500;
}
.tag-accent{background:var(--accent-soft);color:var(--accent)}

/* ---------- 板块通用 ---------- */
.section{padding:72px 0}
.section-soft{background:#FFFFFF;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:32px;
  margin-bottom:40px;
}
.section-head.center{
  flex-direction:column;
  align-items:center;
  text-align:center;
}
.eyebrow{
  display:inline-block;
  font-size:13px;
  font-weight:600;
  color:var(--primary);
  background:var(--primary-soft);
  padding:4px 12px;
  border-radius:var(--radius-pill);
  margin-bottom:14px;
  letter-spacing:.04em;
}
.section-head h2{font-size:28px;letter-spacing:.01em}
.section-head p{
  margin-top:12px;
  font-size:15px;
  color:var(--text-2);
  max-width:640px;
}
.link-more{
  font-size:15px;
  font-weight:600;
  color:var(--primary);
  border-bottom:1px solid transparent;
  transition:var(--tr);
  white-space:nowrap;
}
.link-more:hover{border-bottom-color:var(--primary);text-decoration:underline;text-underline-offset:3px}

/* ---------- 五步流程 ---------- */
.step-flow{
  display:grid;
  grid-template-columns:repeat(5,1fr);
  gap:24px;
}
.step-item{
  position:relative;
  padding-top:60px;
}
.step-num{
  position:absolute;
  top:0;left:0;
  width:44px;height:44px;
  border-radius:50%;
  border:1.5px solid var(--primary);
  background:#fff;
  color:var(--primary);
  display:grid;place-items:center;
  font-weight:700;
  font-size:16px;
  font-variant-numeric:tabular-nums;
}
.step-item:not(:last-child)::before{
  content:"";
  position:absolute;
  top:22px;
  left:56px;
  right:-24px;
  border-top:1px dashed #C7D2E4;
}
.step-item h3{font-size:17px;font-weight:600}
.step-item p{
  margin-top:10px;
  font-size:14px;
  color:var(--text-2);
  line-height:1.75;
}

/* ---------- 数据表 ---------- */
.table-wrap{
  overflow-x:auto;
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-sm);
  -webkit-overflow-scrolling:touch;
}
table.data-table{
  width:100%;
  min-width:760px;
  border-collapse:collapse;
  font-size:14px;
}
table.data-table thead th{
  background:var(--primary-soft);
  color:var(--primary);
  font-size:13px;
  font-weight:600;
  text-align:left;
  padding:14px 18px;
  white-space:nowrap;
  letter-spacing:.03em;
}
table.data-table tbody td{
  padding:14px 18px;
  border-top:1px solid var(--border);
  color:var(--text-2);
  vertical-align:top;
  line-height:1.7;
}
table.data-table tbody tr:nth-child(even){background:#FAFBFE}
table.data-table tbody td:first-child{color:var(--text);font-weight:600}
.cell-warn{color:var(--warn);font-weight:500}
.cell-ok{color:var(--success);font-weight:500}
.table-note{
  margin-top:16px;
  font-size:13px;
  color:var(--text-3);
}

/* ---------- 图文核对区 ---------- */
.split{
  display:grid;
  grid-template-columns:5fr 7fr;
  gap:48px;
  align-items:center;
}
.figure-card{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius-card);
  padding:14px;
  box-shadow:var(--shadow-sm);
  transition:var(--tr);
}
.figure-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px)}
.figure-card img{
  width:100%;
  height:320px;
  object-fit:cover;
  border-radius:var(--radius-img);
}
.figure-caption{
  margin-top:12px;
  font-size:13px;
  color:var(--text-3);
  text-align:center;
}
.check-list li{
  display:flex;
  gap:12px;
  padding:16px 0;
  border-bottom:1px solid var(--border);
}
.check-list li:last-child{border-bottom:0;padding-bottom:0}
.check-icon{
  flex:0 0 auto;
  width:24px;height:24px;
  border-radius:7px;
  background:var(--primary-soft);
  color:var(--primary);
  display:grid;place-items:center;
  margin-top:4px;
}
.check-list h3{font-size:16px;font-weight:600;margin-bottom:4px}
.check-list p{font-size:14px;color:var(--text-2);line-height:1.75}

/* ---------- FAQ ---------- */
.faq-list{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius-card);
  padding:4px 24px;
  box-shadow:var(--shadow-sm);
  max-width:900px;
  margin:0 auto;
}
.faq-item{border-bottom:1px solid var(--border)}
.faq-item:last-child{border-bottom:0}
.faq-q{
  width:100%;
  background:none;
  border:0;
  padding:22px 0;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  text-align:left;
  font-size:16px;
  font-weight:600;
  color:var(--text);
  font-family:inherit;
  transition:color var(--tr);
}
.faq-q:hover{color:var(--primary)}
.faq-icon{
  flex:0 0 auto;
  width:28px;height:28px;
  border-radius:50%;
  border:1px solid var(--border-strong);
  color:var(--primary);
  display:grid;place-items:center;
  transition:transform var(--tr),background var(--tr),border-color var(--tr);
}
.faq-item.is-open .faq-icon{
  transform:rotate(45deg);
  background:var(--primary-soft);
  border-color:var(--primary);
}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height 220ms ease-out;
}
.faq-a-inner{
  padding:0 40px 22px 0;
  font-size:15px;
  color:var(--text-2);
  line-height:1.8;
}

/* ---------- CTA 条 ---------- */
.cta-strip{
  background:linear-gradient(120deg,#EEF3FF 0%,#FFFFFF 65%);
  border:1px solid var(--border);
  border-radius:18px;
  padding:32px 36px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  box-shadow:var(--shadow-sm);
}
.cta-strip h2{font-size:22px}
.cta-strip p{margin-top:8px;font-size:15px;color:var(--text-2);max-width:620px}

/* ---------- 页脚 ---------- */
.site-footer{margin-top:80px}
.footer-cta-wrap{position:relative;z-index:2}
.footer-cta{
  background:#fff;
  border:1px solid var(--border);
  border-radius:18px;
  padding:28px 32px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  box-shadow:var(--shadow-sm);
  transform:translateY(44px);
}
.footer-cta h3{font-size:20px}
.footer-cta p{margin-top:6px;font-size:14px;color:var(--text-2)}
.footer-dark{
  background:#101C33;
  color:#94A3B8;
  padding:92px 0 28px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.1fr;
  gap:40px;
}
.footer-brand .brand-text{
  display:inline-block;
  color:#fff;
  font-size:17px;
  font-weight:700;
  margin-bottom:14px;
}
.footer-brand p{font-size:14px;line-height:1.8;max-width:320px}
.footer-keywords{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin-top:18px;
}
.footer-keywords span{
  font-size:12px;
  color:#C7D2E4;
  border:1px solid rgba(148,163,184,.35);
  border-radius:var(--radius-pill);
  padding:3px 10px;
}
.footer-title{
  color:#fff;
  font-size:14px;
  font-weight:600;
  margin-bottom:16px;
}
.footer-links li{margin-bottom:10px}
.footer-links a{
  font-size:14px;
  color:#94A3B8;
  transition:color var(--tr);
}
.footer-links a:hover{color:#fff}
.footer-bottom{
  margin-top:48px;
  padding-top:22px;
  border-top:1px solid rgba(148,163,184,.2);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  font-size:13px;
  color:#7C8CA6;
  flex-wrap:wrap;
}
.to-top{
  display:inline-flex;
  align-items:center;
  gap:6px;
  background:rgba(255,255,255,.08);
  border:1px solid rgba(148,163,184,.28);
  color:#C7D2E4;
  border-radius:var(--radius-pill);
  padding:8px 16px;
  font-size:13px;
  transition:var(--tr);
}
.to-top:hover{background:#fff;color:#101C33;border-color:#fff}

/* ---------- 响应式 ---------- */
@media (max-width:1080px){
  .nav-links,.search-box{display:none}
  .menu-btn{display:flex}
  .step-flow{grid-template-columns:repeat(3,1fr);row-gap:36px}
  .step-item:nth-child(3n)::before{display:none}
}
@media (max-width:1024px){
  .section{padding:64px 0}
  .split{grid-template-columns:1fr;gap:32px}
  .figure-card img{height:280px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .footer-cta{flex-direction:column;align-items:flex-start;transform:translateY(32px)}
  .footer-dark{padding-top:80px}
}
@media (max-width:768px){
  .page-title{font-size:27px}
  .page-sub{font-size:16px}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px}
  .section-head.center{align-items:center;text-align:center}
  .section-head h2{font-size:23px}
  .step-flow{grid-template-columns:1fr;row-gap:0}
  .step-item{padding:0 0 28px 64px}
  .step-item:not(:last-child)::before{
    top:48px;
    left:21px;
    right:auto;
    bottom:0;
    border-top:0;
    border-left:1px dashed #C7D2E4;
  }
  .step-item:last-child{padding-bottom:0}
  .cta-strip{flex-direction:column;align-items:flex-start;padding:26px 22px}
  .faq-list{padding:4px 18px}
  .faq-a-inner{padding-right:16px}
}
@media (max-width:640px){
  body .container{padding-left:16px;padding-right:16px}
  .section{padding:56px 0}
  .page-band{padding:24px 0 28px}
  .page-title{font-size:24px}
  .brand{font-size:16px}
  .btn{height:44px;padding:0 20px;font-size:14px}
  .footer-grid{grid-template-columns:1fr}
  .figure-card img{height:220px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}

/* roulang page: category4 */
:root{
  --primary:#2450B8;
  --primary-hover:#1B3F96;
  --primary-soft:#EEF3FF;
  --accent:#E4782F;
  --bg:#F6F8FC;
  --surface:#FFFFFF;
  --border:#E8EDF5;
  --border-strong:#DDE4EE;
  --text:#0F172A;
  --text-2:#475569;
  --text-3:#94A3B8;
  --success:#12A594;
  --danger:#D92D20;
  --warning:#D97706;
  --radius-card:14px;
  --radius-img:12px;
  --radius-btn:10px;
  --shadow-card:0 1px 2px rgba(15,23,42,.04),0 8px 24px -12px rgba(15,23,42,.10);
  --shadow-hover:0 16px 40px -16px rgba(15,23,42,.18);
  --ease:200ms ease-out;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color var(--ease),background-color var(--ease)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input{font:inherit}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
.tnum{font-variant-numeric:tabular-nums}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:50;
  background:#fff;
  border-bottom:1px solid var(--border);
  box-shadow:0 1px 2px rgba(15,23,42,.04);
}
.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:34px;height:34px;border-radius:10px;flex:none;
  display:grid;place-items:center;
  background:var(--primary-soft);color:var(--primary);
}
.brand-text{font-size:17px;font-weight:700;letter-spacing:.01em;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:6px}
.nav-link{position:relative;font-size:15px;color:var(--text-2);padding:6px 0;white-space:nowrap}
.nav-link:hover{color:var(--primary)}
.nav-link.is-active{color:var(--primary);font-weight:600}
.nav-link.is-active::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--primary);border-radius:2px;
}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.search-box{
  display:flex;align-items:center;gap:8px;
  height:40px;width:196px;padding:0 14px;
  background:#F1F5F9;border:1px solid transparent;border-radius:999px;
  color:var(--text-3);transition:all var(--ease);
}
.search-box input{width:100%;border:0;background:transparent;outline:none;font-size:14px;color:var(--text)}
.search-box input::placeholder{color:var(--text-3)}
.search-box:focus-within{background:#fff;border-color:var(--primary);box-shadow:0 0 0 4px rgba(36,80,184,.12)}
.menu-btn{
  display:none;width:40px;height:40px;border-radius:10px;
  align-items:center;justify-content:center;
  color:var(--text-2);border:1px solid var(--border);background:#fff;
}
.menu-btn:hover{color:var(--primary);border-color:var(--primary)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;font-size:15px;font-weight:600;
  border-radius:var(--radius-btn);border:1px solid transparent;
  cursor:pointer;white-space:nowrap;
  transition:all var(--ease);
}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-hover);transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.btn-primary:active{transform:translateY(0)}
.btn-outline{background:#fff;color:var(--primary);border-color:var(--primary)}
.btn-outline:hover{background:var(--primary-soft)}
.btn-pill{border-radius:999px}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-lg{height:50px;padding:0 28px;font-size:16px}
.btn-block{width:100%}

/* ============ 通用小元素 ============ */
.eyebrow{
  display:inline-flex;align-items:center;gap:6px;
  height:24px;padding:0 10px;border-radius:999px;
  background:var(--primary-soft);color:var(--primary);
  font-size:12px;font-weight:600;letter-spacing:.02em;
}
.eyebrow-accent{background:#FDF1E7;color:#B8560F}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  border-radius:999px;background:var(--primary-soft);color:var(--primary);
  font-size:12px;font-weight:600;
}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--primary);font-size:14px;font-weight:600;
}
.text-link:hover{text-decoration:underline;text-underline-offset:3px}

/* ============ 页面头部 ============ */
.page-head{
  background:linear-gradient(180deg,#FFFFFF 0%,#F1F5FF 100%);
  border-bottom:1px solid var(--border);
  padding:44px 0 52px;
  position:relative;overflow:hidden;
}
.page-head::after{
  content:"";position:absolute;right:-120px;top:-120px;
  width:340px;height:340px;border-radius:50%;
  background:rgba(36,80,184,.06);
}
.page-head .container{position:relative;z-index:1}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:20px}
.breadcrumb a{color:var(--text-3)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:#CBD5E1}
.breadcrumb .current{color:var(--text-2)}
.page-title{
  font-size:36px;line-height:1.3;font-weight:700;letter-spacing:.01em;
  max-width:820px;margin:14px 0 16px;
}
.page-desc{
  max-width:760px;font-size:16px;color:var(--text-2);line-height:1.85;
}
.head-facts{
  display:flex;flex-wrap:wrap;gap:12px 34px;margin-top:28px;
  padding-top:22px;border-top:1px dashed var(--border-strong);
}
.head-fact{display:flex;align-items:baseline;gap:8px;font-size:14px;color:var(--text-2)}
.head-fact strong{font-size:22px;font-weight:700;color:var(--primary);font-variant-numeric:tabular-nums}

/* ============ 双栏目录布局 ============ */
.doc-layout{
  display:grid;grid-template-columns:280px minmax(0,1fr);
  gap:56px;padding-top:56px;padding-bottom:16px;
}
.doc-aside{align-self:start;position:sticky;top:96px}
.doc-nav{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  padding:20px;box-shadow:var(--shadow-card);
}
.doc-nav-title{
  font-size:13px;font-weight:600;color:var(--text-3);
  letter-spacing:.06em;margin-bottom:12px;
}
.doc-nav ul{display:flex;flex-direction:column}
.doc-nav a{
  display:block;font-size:14px;color:var(--text-2);
  padding:9px 12px;border-left:2px solid var(--border);
  line-height:1.5;
}
.doc-nav a:hover{color:var(--primary);background:var(--primary-soft)}
.doc-nav a.is-current{
  color:var(--primary);font-weight:600;
  border-left-color:var(--primary);background:var(--primary-soft);
}
.doc-nav-note{
  margin-top:16px;padding-top:16px;border-top:1px dashed var(--border-strong);
  font-size:13px;color:var(--text-3);line-height:1.7;
}

/* ============ 内容区块 ============ */
.doc-main{min-width:0}
.section-block{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  padding:32px;box-shadow:var(--shadow-card);margin-bottom:28px;
  scroll-margin-top:104px;
}
.block-head{margin-bottom:20px}
.block-title{
  font-size:24px;font-weight:700;line-height:1.35;letter-spacing:.01em;
  margin:10px 0 8px;
}
.block-note{font-size:14px;color:var(--text-3)}
.doc-main p.body-text{font-size:16px;color:var(--text-2);line-height:1.85;margin-bottom:16px}
.doc-main p.body-text:last-child{margin-bottom:0}
.figure{margin:22px 0}
.figure img{width:100%;border-radius:var(--radius-img);border:1px solid var(--border)}
.figure figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px}

/* 疑问四分组 */
.info-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:22px}
.info-card{
  border:1px solid var(--border);border-radius:var(--radius-card);
  padding:20px;background:var(--bg);
  transition:all var(--ease);
}
.info-card:hover{
  background:#fff;border-color:#CFDCF8;
  box-shadow:var(--shadow-hover);transform:translateY(-3px);
}
.info-card-top{display:flex;align-items:center;gap:10px;margin-bottom:8px}
.info-num{
  width:26px;height:26px;border-radius:8px;flex:none;
  display:grid;place-items:center;
  background:#fff;border:1px solid var(--border-strong);
  color:var(--accent);font-size:13px;font-weight:700;
  font-variant-numeric:tabular-nums;
}
.info-card h3{font-size:16px;font-weight:600;line-height:1.4}
.info-card p{font-size:14px;color:var(--text-2);line-height:1.75}

/* 步骤 */
.steps{margin-top:22px;display:flex;flex-direction:column;gap:14px;counter-reset:step}
.step-item{
  display:flex;gap:16px;align-items:flex-start;
  padding:16px 18px;border:1px solid var(--border);border-radius:var(--radius-card);
  background:#fff;
}
.step-num{
  width:32px;height:32px;border-radius:50%;flex:none;
  display:grid;place-items:center;
  border:1px solid var(--primary);color:var(--primary);
  font-size:14px;font-weight:700;font-variant-numeric:tabular-nums;
  background:var(--primary-soft);
}
.step-item h3{font-size:16px;font-weight:600;margin-bottom:2px}
.step-item p{font-size:14px;color:var(--text-2);line-height:1.75}

/* 提示框 */
.callout{
  border-left:3px solid var(--primary);background:var(--primary-soft);
  border-radius:0 var(--radius-card) var(--radius-card) 0;
  padding:18px 20px;margin:20px 0;
}
.callout p{font-size:15px;color:#1B3F96;line-height:1.8;margin:0}
.callout strong{font-weight:600}

/* 清单 */
.check-list{display:flex;flex-direction:column;gap:12px;margin-top:22px}
.check-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--text-2);line-height:1.75}
.check-icon{
  width:22px;height:22px;border-radius:50%;flex:none;margin-top:3px;
  display:grid;place-items:center;
  background:var(--primary-soft);color:var(--primary);
}
.check-list strong{color:var(--text);font-weight:600}

/* 链接卡网格 */
.link-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-top:22px}
.link-card{
  display:block;border:1px solid var(--border);border-radius:var(--radius-card);
  padding:18px;background:#fff;transition:all var(--ease);
}
.link-card:hover{
  border-color:#CFDCF8;box-shadow:var(--shadow-hover);transform:translateY(-3px);
}
.link-card h3{font-size:15px;font-weight:600;margin:10px 0 6px;line-height:1.45}
.link-card p{font-size:13px;color:var(--text-3);line-height:1.7}
.link-card .text-link{margin-top:12px;font-size:13px}
.link-ico{
  width:36px;height:36px;border-radius:10px;display:grid;place-items:center;
  background:var(--primary-soft);color:var(--primary);
}

/* FAQ */
.faq-list{margin-top:8px}
.faq-item{border-bottom:1px solid var(--border)}
.faq-item:last-child{border-bottom:0}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 0;cursor:pointer;list-style:none;
  font-size:16px;font-weight:600;line-height:1.55;color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--primary)}
.faq-icon{
  position:relative;width:28px;height:28px;border-radius:50%;flex:none;
  border:1px solid var(--border-strong);transition:all var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;
  background:var(--primary);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:12px;height:2px}
.faq-icon::after{width:2px;height:12px;transition:transform var(--ease)}
.faq-item[open] .faq-icon{border-color:var(--primary);background:var(--primary-soft)}
.faq-item[open] .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg)}
.faq-answer{padding:0 0 20px;font-size:15px;color:var(--text-2);line-height:1.85;max-width:720px}

/* CTA 条 */
.cta-band{
  background:var(--primary-soft);
  border-top:1px solid #DCE5FB;border-bottom:1px solid #DCE5FB;
  padding:56px 0;margin-top:72px;
  scroll-margin-top:104px;
}
.cta-inner{
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
}
.cta-text h2{font-size:24px;font-weight:700;line-height:1.4;margin-bottom:8px;color:#132A63}
.cta-text p{font-size:15px;color:#3A548F;max-width:640px}

/* ============ 页脚 ============ */
.site-footer{margin-top:0;background:var(--bg)}
.footer-cta-wrap{position:relative;z-index:2;margin-top:72px}
.footer-cta{
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
  background:#fff;border:1px solid var(--border);border-radius:18px;
  padding:32px;box-shadow:var(--shadow-card);
  margin-bottom:-46px;
}
.footer-cta h3{font-size:20px;font-weight:700;line-height:1.45;margin-bottom:6px}
.footer-cta p{font-size:14px;color:var(--text-2)}
.footer-dark{background:#101C33;padding:96px 0 0;color:#94A3B8}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;
  padding-bottom:40px;
}
.footer-brand .brand-text{display:block;color:#fff;font-size:18px;margin-bottom:12px}
.footer-brand p{font-size:14px;line-height:1.85;color:#94A3B8;max-width:330px}
.footer-keywords{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.footer-keywords span{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  border-radius:999px;border:1px solid rgba(148,163,184,.35);
  font-size:12px;color:#94A3B8;
}
.footer-title{font-size:14px;font-weight:600;color:#fff;margin-bottom:14px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:#94A3B8}
.footer-links a:hover{color:#fff}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  border-top:1px solid rgba(148,163,184,.18);
  padding:22px 0 28px;font-size:13px;color:#7A8AA5;
}
.to-top{
  display:inline-flex;align-items:center;gap:6px;
  height:36px;padding:0 14px;border-radius:999px;
  border:1px solid rgba(148,163,184,.35);color:#C7D2E4;font-size:13px;
  transition:all var(--ease);
}
.to-top:hover{border-color:#fff;color:#fff;background:rgba(255,255,255,.06)}

/* ============ 移动抽屉 ============ */
.drawer-mask{
  position:fixed;inset:0;background:rgba(15,23,42,.45);
  opacity:0;visibility:hidden;transition:all var(--ease);z-index:60;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;width:82%;max-width:340px;
  background:#fff;border-radius:16px 0 0 16px;
  transform:translateX(102%);transition:transform 240ms ease-out;
  z-index:61;display:flex;flex-direction:column;padding:20px;
}
.mobile-drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.drawer-close{
  width:36px;height:36px;border-radius:10px;border:1px solid var(--border);
  display:grid;place-items:center;color:var(--text-2);
}
.drawer-close:hover{color:var(--primary);border-color:var(--primary)}
.drawer-links{display:flex;flex-direction:column;gap:2px;overflow-y:auto}
.drawer-links a{
  font-size:15px;color:var(--text-2);padding:13px 12px;border-radius:10px;
}
.drawer-links a:hover{background:var(--primary-soft);color:var(--primary)}
.drawer-links a.is-active{background:var(--primary-soft);color:var(--primary);font-weight:600}
.drawer-foot{margin-top:auto;padding-top:20px}

/* ============ 响应式 ============ */
@media (max-width:1100px){
  .search-box{width:160px}
  .nav-links{gap:18px}
}
@media (max-width:1023px){
  .nav-links,.search-box{display:none}
  .menu-btn{display:flex}
  .doc-layout{grid-template-columns:1fr;gap:28px;padding-top:40px}
  .doc-aside{position:static}
  .doc-nav{display:block}
  .doc-nav ul{
    display:grid;grid-template-columns:repeat(2,minmax(0,1fr));
    gap:4px 8px;
  }
  .doc-nav a{border-left:0;border-radius:8px;padding:10px 12px}
  .doc-nav a.is-current{background:var(--primary-soft)}
  .link-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:30px}
  .site-footer{margin-top:0}
}
@media (max-width:767px){
  .page-head{padding:32px 0 40px}
  .page-title{font-size:27px}
  .page-desc{font-size:15px}
  .section-block{padding:22px}
  .block-title{font-size:20px}
  .info-grid{grid-template-columns:1fr}
  .link-grid{grid-template-columns:1fr}
  .cta-band{padding:40px 0;margin-top:48px}
  .cta-text h2{font-size:20px}
  .footer-cta{padding:24px;margin-bottom:-32px}
  .footer-cta h3{font-size:17px}
  .footer-dark{padding-top:76px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .page-title{font-size:24px}
  .nav-wrap{height:62px;gap:12px}
  .brand-text{font-size:16px}
  .head-facts{gap:10px 20px}
  .head-fact strong{font-size:19px}
  .doc-nav ul{grid-template-columns:1fr}
  .step-item{padding:14px}
  .btn{width:auto}
  .faq-item summary{font-size:15px}
}