/* roulang page: index */
:root{
  --brand:#2458D3;
  --brand-dark:#1B45A8;
  --brand-soft:#EEF4FF;
  --brand-line:#CFDCF7;
  --teal:#0FB5A6;
  --teal-soft:#E6F8F6;
  --orange:#FF7A45;
  --orange-soft:#FFF1EA;
  --bg:#F6F8FB;
  --card:#FFFFFF;
  --text:#101828;
  --muted:#667085;
  --border:#E4EAF2;
  --footer:#0F172A;
  --r-card:16px;
  --r-btn:11px;
  --shadow-sm:0 10px 30px rgba(16,24,40,.06);
  --shadow-hover:0 16px 40px rgba(16,24,40,.12);
  --sidebar:248px;
  --container:1180px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",system-ui,-apple-system,sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-dark);}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul,ol{padding:0;list-style:none;}
button,input,select,textarea{font:inherit;color:inherit;}
:focus-visible{outline:3px solid rgba(36,88,211,.35);outline-offset:2px;}

/* ---------- 侧栏导航 ---------- */
.side-nav{
  position:fixed;top:0;left:0;width:var(--sidebar);height:100vh;
  background:#fff;border-right:1px solid var(--border);
  padding:26px 20px 22px;display:flex;flex-direction:column;gap:22px;
  overflow-y:auto;z-index:30;
}
.brand{display:flex;align-items:center;gap:11px;padding-bottom:18px;border-bottom:1px solid var(--border);}
.brand-mark{
  width:42px;height:42px;border-radius:12px;flex:0 0 42px;
  background:linear-gradient(135deg,var(--brand),#3E7BEF);
  color:#fff;display:flex;align-items:center;justify-content:center;
  font-size:17px;font-weight:700;letter-spacing:-.5px;
  box-shadow:0 8px 18px rgba(36,88,211,.28);
}
.brand-text strong{display:block;font-size:15px;line-height:1.35;font-weight:700;letter-spacing:.2px;}
.brand-text span{display:block;font-size:12px;color:var(--muted);line-height:1.5;}
.nav-label{font-size:12px;color:var(--muted);letter-spacing:1.6px;font-weight:600;margin-bottom:2px;}
.nav-list{display:flex;flex-direction:column;gap:4px;}
.nav-list a{
  display:flex;align-items:center;gap:10px;
  padding:11px 12px;border-radius:10px;color:#344054;
  font-size:14.5px;font-weight:500;line-height:1.4;position:relative;
  transition:background .2s ease,color .2s ease,transform .2s ease;
}
.nav-list a i{width:18px;text-align:center;font-size:14px;color:#98A2B3;transition:color .2s ease;}
.nav-list a:hover{background:var(--brand-soft);color:var(--brand);transform:translateX(2px);}
.nav-list a:hover i{color:var(--brand);}
.nav-list a.active{background:var(--brand-soft);color:var(--brand);font-weight:600;}
.nav-list a.active i{color:var(--brand);}
.nav-list a.active::before{
  content:"";position:absolute;left:-20px;top:50%;transform:translateY(-50%);
  width:4px;height:22px;border-radius:0 4px 4px 0;background:var(--brand);
}
.mini-nav a{font-size:13.5px;color:var(--muted);padding:7px 12px;border-radius:8px;}
.mini-nav a:hover{background:#F2F5FA;color:var(--brand);}
.side-cta{
  margin-top:auto;background:linear-gradient(160deg,#F3F7FF,#FFFFFF);
  border:1px solid var(--brand-line);border-radius:14px;padding:18px 16px;
}
.side-cta p{font-size:13px;color:var(--muted);line-height:1.7;margin-bottom:12px;}
.side-cta .btn{width:100%;font-size:14px;padding:11px 14px;}

/* ---------- 移动端顶栏 ---------- */
.mobile-bar{
  display:none;position:sticky;top:0;z-index:45;
  background:rgba(255,255,255,.96);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--border);
  padding:12px 16px;align-items:center;justify-content:space-between;
}
.mobile-bar .brand{padding:0;border:0;gap:9px;}
.mobile-bar .brand-mark{width:36px;height:36px;flex:0 0 36px;font-size:15px;border-radius:10px;}
.mobile-bar .brand-text strong{font-size:14px;}
.burger{
  width:42px;height:42px;border-radius:11px;border:1px solid var(--border);background:#fff;
  display:flex;align-items:center;justify-content:center;font-size:17px;color:var(--brand);cursor:pointer;
}
.burger:hover{border-color:var(--brand);background:var(--brand-soft);}

/* ---------- 布局容器 ---------- */
.page-wrap{margin-left:var(--sidebar);}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;}
.section{padding:84px 0;}
.section.tight{padding:60px 0;}
.section-head{max-width:760px;margin-bottom:44px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:7px;
  font-size:12.5px;font-weight:700;letter-spacing:1.6px;
  color:var(--brand);background:var(--brand-soft);
  border-radius:999px;padding:6px 14px;margin-bottom:16px;
}
.eyebrow.teal{color:#0B8C80;background:var(--teal-soft);}
.eyebrow.orange{color:#D3562A;background:var(--orange-soft);}
h1{font-size:clamp(30px,4vw,50px);line-height:1.25;font-weight:700;letter-spacing:-.5px;}
h2{font-size:clamp(24px,2.6vw,34px);line-height:1.3;font-weight:700;letter-spacing:-.3px;}
h3{font-size:19px;line-height:1.45;font-weight:600;}
.lead{font-size:17px;color:var(--muted);line-height:1.9;}
.section-head p{margin-top:14px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 26px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  transition:all .24s ease;white-space:nowrap;
}
.btn i{font-size:14px;}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 10px 24px rgba(36,88,211,.26);}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-2px);box-shadow:0 14px 30px rgba(36,88,211,.32);}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--brand-line);}
.btn-ghost:hover{background:var(--brand-soft);border-color:var(--brand);color:var(--brand);transform:translateY(-2px);}
.btn-orange{background:var(--orange);color:#fff;box-shadow:0 10px 24px rgba(255,122,69,.28);}
.btn-orange:hover{background:#F0692F;color:#fff;transform:translateY(-2px);}
.btn-link{color:var(--brand);font-weight:600;font-size:14.5px;display:inline-flex;align-items:center;gap:6px;}
.btn-link i{transition:transform .22s ease;}
.btn-link:hover i{transform:translateX(4px);}
.btn-block{width:100%;}
.btn-sm{padding:10px 18px;font-size:14px;}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  background-image:linear-gradient(120deg,rgba(238,244,255,.94),rgba(255,255,255,.9)),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--border);
}
.hero-inner{
  display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;
  padding:78px 0 70px;
}
.hero h1{margin-bottom:18px;}
.hero h1 em{font-style:normal;color:var(--brand);}
.hero .lead{max-width:560px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin:24px 0 30px;}
.tag{
  display:inline-flex;align-items:center;gap:7px;
  font-size:13.5px;font-weight:600;color:#344054;
  background:#fff;border:1px solid var(--border);border-radius:999px;padding:7px 14px;
}
.tag i{color:var(--teal);font-size:12px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}
.hero-visual{position:relative;}
.hero-visual img{
  border-radius:20px;box-shadow:0 24px 60px rgba(16,24,40,.14);
  border:6px solid #fff;object-fit:cover;width:100%;height:360px;
}
.hero-float{
  position:absolute;left:-18px;bottom:26px;background:#fff;border:1px solid var(--border);
  border-radius:14px;padding:16px 20px;box-shadow:var(--shadow-sm);min-width:200px;
}
.hero-float strong{display:block;font-size:24px;color:var(--brand);line-height:1.2;font-weight:700;}
.hero-float span{font-size:13px;color:var(--muted);}

/* ---------- 数据条 ---------- */
.stat-strip{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  box-shadow:var(--shadow-sm);display:grid;grid-template-columns:repeat(4,1fr);
  overflow:hidden;margin-top:-38px;position:relative;z-index:5;
}
.stat-item{padding:26px 24px;border-right:1px solid var(--border);}
.stat-item:last-child{border-right:0;}
.stat-item strong{display:block;font-size:28px;font-weight:700;color:var(--text);line-height:1.25;letter-spacing:-.5px;}
.stat-item strong i{font-size:20px;color:var(--brand);margin-right:8px;}
.stat-item span{font-size:13.5px;color:var(--muted);line-height:1.6;display:block;margin-top:6px;}

/* ---------- 优惠阶梯 ---------- */
.ladder{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;align-items:start;}
.ladder-step{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  padding:28px 24px;box-shadow:var(--shadow-sm);position:relative;
  transition:transform .26s ease,box-shadow .26s ease,border-color .26s ease;
}
.ladder-step:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover);border-color:var(--brand-line);}
.ladder-step:nth-child(2){margin-top:26px;}
.ladder-step:nth-child(3){margin-top:52px;}
.ladder-step:nth-child(4){margin-top:78px;}
.step-num{
  font-size:13px;font-weight:700;letter-spacing:1.4px;color:var(--brand);
  background:var(--brand-soft);border-radius:999px;padding:5px 12px;display:inline-block;margin-bottom:16px;
}
.ladder-step h3{margin-bottom:10px;}
.ladder-step p{font-size:14.5px;color:var(--muted);line-height:1.8;min-height:78px;}
.step-meta{
  border-top:1px dashed var(--border);margin-top:16px;padding-top:14px;
  font-size:13.5px;color:var(--muted);display:flex;align-items:center;gap:8px;
}
.step-meta i{color:var(--teal);}
.ladder-step .btn{margin-top:16px;width:100%;}

/* ---------- 套餐对比 ---------- */
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch;}
.plan{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  padding:30px 26px;display:flex;flex-direction:column;
  box-shadow:var(--shadow-sm);transition:transform .26s ease,box-shadow .26s ease;
}
.plan:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.plan.featured{border:2px solid var(--brand);box-shadow:0 18px 44px rgba(36,88,211,.16);position:relative;}
.plan-badge{
  position:absolute;top:-14px;right:24px;background:var(--brand);color:#fff;
  font-size:12.5px;font-weight:700;letter-spacing:1px;border-radius:999px;padding:6px 14px;
}
.plan-name{font-size:17px;font-weight:700;margin-bottom:6px;}
.plan-desc{font-size:13.5px;color:var(--muted);line-height:1.7;min-height:46px;}
.plan-price{display:flex;align-items:baseline;gap:6px;margin:18px 0 4px;}
.plan-price strong{font-size:36px;font-weight:700;letter-spacing:-1px;color:var(--text);}
.plan-price span{font-size:14px;color:var(--muted);}
.plan-cycle{font-size:13px;color:var(--muted);margin-bottom:20px;}
.plan-list{display:flex;flex-direction:column;gap:12px;margin-bottom:24px;flex:1;}
.plan-list li{display:flex;align-items:flex-start;gap:10px;font-size:14.5px;color:#344054;line-height:1.7;}
.plan-list li i{color:var(--teal);font-size:14px;margin-top:5px;flex:0 0 auto;}
.plan-list li.dim{color:#98A2B3;}
.plan-list li.dim i{color:#CBD3E0;}
.compare-wrap{
  margin-top:34px;background:#fff;border:1px solid var(--border);
  border-radius:var(--r-card);box-shadow:var(--shadow-sm);overflow:hidden;
}
.compare-scroll{overflow-x:auto;}
table.compare{width:100%;border-collapse:collapse;min-width:620px;}
table.compare th,table.compare td{
  padding:16px 22px;text-align:left;font-size:14.5px;border-bottom:1px solid var(--border);white-space:nowrap;
}
table.compare thead th{background:#F9FBFE;font-weight:700;font-size:14px;color:#344054;}
table.compare tbody tr:last-child td{border-bottom:0;}
table.compare tbody tr:hover{background:#FAFCFF;}
table.compare td.strong{color:var(--brand);font-weight:600;}

/* ---------- 最新信息 ---------- */
.news-shell{background:#fff;border:1px solid var(--border);border-radius:var(--r-card);box-shadow:var(--shadow-sm);padding:34px;}
.news-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.news-card{
  display:grid;grid-template-columns:132px 1fr;gap:18px;
  border:1px solid var(--border);border-radius:14px;padding:16px;background:#fff;
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--brand-line);}
.news-thumb{border-radius:11px;overflow:hidden;background:var(--brand-soft);height:100%;min-height:96px;}
.news-thumb img{width:100%;height:100%;object-fit:cover;}
.news-body{display:flex;flex-direction:column;gap:8px;min-width:0;}
.news-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:12.5px;color:var(--muted);}
.chip{
  display:inline-block;background:var(--brand-soft);color:var(--brand);
  font-size:12px;font-weight:600;border-radius:999px;padding:3px 11px;
}
.news-body h3{font-size:17px;line-height:1.5;}
.news-body h3 a{color:var(--text);}
.news-body h3 a:hover{color:var(--brand);}
.news-body p{
  font-size:14px;color:var(--muted);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-more{display:flex;align-items:center;justify-content:space-between;margin-top:26px;padding-top:22px;border-top:1px solid var(--border);}
.empty-state{
  text-align:center;padding:56px 24px;border:1px dashed var(--border);border-radius:14px;background:#FAFCFF;
}
.empty-state i{font-size:30px;color:#B9C6DC;margin-bottom:12px;display:block;}
.empty-state p{color:var(--muted);font-size:15px;}

/* ---------- 限时入口 ---------- */
.limited{
  background:#fff;border:1px solid var(--brand-line);border-radius:20px;
  box-shadow:var(--shadow-sm);padding:40px;display:grid;grid-template-columns:1.1fr .9fr;gap:44px;align-items:center;
}
.countdown{display:flex;gap:14px;margin:24px 0 20px;}
.count-box{
  background:var(--orange-soft);border:1px solid #FFD9C7;border-radius:14px;
  padding:14px 0;text-align:center;flex:1;
}
.count-box strong{display:block;font-size:30px;font-weight:700;color:#D3562A;line-height:1.15;letter-spacing:-1px;}
.count-box span{font-size:12.5px;color:#B4562B;}
.progress-line{height:9px;background:#EEF2F8;border-radius:999px;overflow:hidden;margin-bottom:10px;}
.progress-line i{display:block;height:100%;width:78%;border-radius:999px;background:linear-gradient(90deg,var(--brand),var(--teal));}
.progress-note{display:flex;justify-content:space-between;font-size:13.5px;color:var(--muted);}
.limited-visual img{border-radius:16px;box-shadow:0 18px 44px rgba(16,24,40,.12);height:280px;width:100%;object-fit:cover;}

/* ---------- 咨询表单 ---------- */
.contact-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:44px;align-items:start;}
.contact-info{background:linear-gradient(160deg,#F3F7FF,#FFFFFF);border:1px solid var(--brand-line);border-radius:var(--r-card);padding:34px 30px;}
.contact-info h3{margin-bottom:14px;}
.contact-info p{font-size:14.5px;color:var(--muted);line-height:1.85;}
.contact-list{margin-top:24px;display:flex;flex-direction:column;gap:16px;}
.contact-list li{display:flex;gap:12px;align-items:flex-start;font-size:14.5px;color:#344054;line-height:1.7;}
.contact-list li i{color:var(--brand);margin-top:5px;}
.form-card{background:#fff;border:1px solid var(--border);border-radius:var(--r-card);box-shadow:var(--shadow-sm);padding:34px 32px;}
.field{margin-bottom:20px;}
.field label{display:block;font-size:14px;font-weight:600;margin-bottom:8px;color:#344054;}
.field label em{font-style:normal;color:var(--orange);margin-left:3px;}
.field input[type="text"],.field input[type="tel"],.field select,.field textarea{
  width:100%;min-height:48px;padding:12px 15px;background:#fff;
  border:1px solid var(--border);border-radius:10px;font-size:15px;line-height:1.6;
  transition:border-color .2s ease,box-shadow .2s ease;appearance:none;
}
.field textarea{min-height:118px;resize:vertical;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(36,88,211,.14);
}
.field select{background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath fill='%23667085' d='M4.5 6l3.5 4 3.5-4z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center;background-size:16px;padding-right:40px;}
.check-line{display:flex;align-items:flex-start;gap:10px;font-size:13.5px;color:var(--muted);line-height:1.7;margin:6px 0 22px;}
.check-line input{width:17px;height:17px;margin-top:4px;accent-color:var(--brand);flex:0 0 auto;}
.form-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;}
.form-msg{display:none;margin-top:18px;padding:14px 18px;border-radius:12px;font-size:14px;line-height:1.7;}
.form-msg.ok{display:block;background:var(--teal-soft);color:#0B7F76;border:1px solid #B7E8E3;}
.form-msg.err{display:block;background:#FEF3F2;color:#B42318;border:1px solid #FBD5D2;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:920px;}
ul.accordion.faq-accordion{border:0;background:transparent;}
ul.accordion.faq-accordion .accordion-item{
  border:1px solid var(--border);border-radius:14px;background:#fff;
  margin-bottom:14px;overflow:hidden;box-shadow:var(--shadow-sm);transition:border-color .22s ease;
}
ul.accordion.faq-accordion .accordion-item.is-active{border-color:var(--brand-line);}
ul.accordion.faq-accordion .accordion-title{
  border:0;padding:20px 52px 20px 24px;font-size:17px;font-weight:600;color:var(--text);
  line-height:1.55;background:#fff;position:relative;transition:color .2s ease;
}
ul.accordion.faq-accordion .accordion-title:hover{color:var(--brand);background:#FAFCFF;}
ul.accordion.faq-accordion .accordion-title::before{
  content:"\f067";font-family:"Font Awesome 6 Free";font-weight:900;
  position:absolute;right:22px;top:50%;transform:translateY(-50%);
  font-size:13px;color:var(--brand);border:0;margin:0;background:transparent;line-height:1;
}
ul.accordion.faq-accordion .accordion-item.is-active .accordion-title::before{content:"\f068";}
ul.accordion.faq-accordion .accordion-item.is-active .accordion-title{
  color:var(--brand);box-shadow:inset 4px 0 0 var(--brand);
}
ul.accordion.faq-accordion .accordion-content{
  border:0;border-top:1px solid var(--border);padding:18px 24px 22px;background:#FAFCFF;
}
ul.accordion.faq-accordion .accordion-content p{font-size:15px;line-height:1.85;color:#475467;}

/* ---------- 主 CTA 横幅 ---------- */
.cta-band{
  background:linear-gradient(120deg,#EEF4FF,#FFFFFF 65%);
  border-top:1px solid var(--border);border-bottom:1px solid var(--border);
  padding:64px 0;
}
.cta-band-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;}
.cta-band h2{max-width:640px;}
.cta-band p{color:var(--muted);margin-top:12px;font-size:16px;max-width:620px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--footer);color:#C6CFDE;padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.site-footer h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:18px;letter-spacing:.4px;}
.site-footer p{font-size:14px;line-height:1.85;color:#98A5BC;}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:16px;}
.footer-brand .brand-mark{box-shadow:none;background:linear-gradient(135deg,#2F6BEA,#4C8BF5);}
.footer-brand strong{color:#fff;font-size:15.5px;line-height:1.35;}
.footer-links{display:flex;flex-direction:column;gap:12px;}
.footer-links a{color:#C6CFDE;font-size:14px;}
.footer-links a:hover{color:var(--teal);}
.footer-contact li{display:flex;gap:10px;font-size:14px;color:#C6CFDE;margin-bottom:12px;line-height:1.7;}
.footer-contact li i{color:var(--teal);margin-top:5px;}
.footer-bottom{
  margin-top:52px;border-top:1px solid rgba(255,255,255,.09);
  padding:22px 0 26px;display:flex;flex-wrap:wrap;gap:12px;
  align-items:center;justify-content:space-between;font-size:13px;color:#8A97AE;
}
.footer-bottom a{color:#8A97AE;}
.footer-bottom a:hover{color:var(--teal);}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{padding:0 26px;}
  .hero-inner{gap:40px;}
}
@media (max-width:1023px){
  .side-nav{display:none;}
  .page-wrap{margin-left:0;}
  .mobile-bar{display:flex;}
  .hero-inner{grid-template-columns:1fr;padding:52px 0 56px;}
  .hero-visual img{height:300px;}
  .hero-float{left:14px;bottom:-18px;}
  .stat-strip{grid-template-columns:repeat(2,1fr);margin-top:26px;}
  .stat-item:nth-child(2){border-right:0;}
  .stat-item:nth-child(1),.stat-item:nth-child(2){border-bottom:1px solid var(--border);}
  .ladder{grid-template-columns:repeat(2,1fr);}
  .ladder-step:nth-child(2),.ladder-step:nth-child(3),.ladder-step:nth-child(4){margin-top:0;}
  .plans{grid-template-columns:1fr;}
  .plan.featured{order:-1;}
  .news-grid{grid-template-columns:1fr;}
  .limited{grid-template-columns:1fr;padding:30px;}
  .contact-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:34px;}
  .section{padding:60px 0;}
}
@media (max-width:767px){
  body{font-size:15.5px;}
  .container{padding:0 18px;}
  .section{padding:52px 0;}
  .section-head{margin-bottom:30px;}
  .hero h1{font-size:30px;}
  .hero-actions .btn{flex:1 1 100%;}
  .hero-visual img{height:230px;}
  .hero-float{position:static;margin-top:16px;min-width:0;}
  .stat-strip{grid-template-columns:1fr;}
  .stat-item{border-right:0;border-bottom:1px solid var(--border);}
  .ladder{grid-template-columns:1fr;}
  .news-shell{padding:22px;}
  .news-card{grid-template-columns:1fr;}
  .news-thumb{height:168px;min-height:0;}
  .countdown{flex-wrap:wrap;gap:10px;}
  .count-box{flex:1 1 calc(50% - 10px);}
  .form-card,.contact-info{padding:24px 20px;}
  .form-actions .btn{width:100%;}
  .cta-band-inner .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
}
@media (max-width:520px){
  .news-grid{gap:16px;}
  .count-box strong{font-size:24px;}
  .plan-price strong{font-size:30px;}
}
/* Foundation 覆盖 */
.button,.button.primary,.button.secondary{background:var(--brand);border-radius:var(--r-btn);font-weight:600;}
.accordion-title::before{font-family:"Font Awesome 6 Free";}
.off-canvas{background:#fff;}
.off-canvas .nav-list a{padding:14px 16px;font-size:15px;}
.off-canvas .nav-list a.active::before{left:-16px;}
.off-canvas-content{min-height:100vh;background:var(--bg);}

/* roulang page: article */
:root{
  --primary:#2458D3;
  --primary-dark:#1B44A8;
  --primary-soft:#EEF4FF;
  --teal:#0FB5A6;
  --teal-soft:#E6F8F6;
  --orange:#FF7A45;
  --orange-soft:#FFF1EA;
  --bg:#F6F8FB;
  --card:#FFFFFF;
  --text:#101828;
  --muted:#667085;
  --border:#E4EAF2;
  --footer:#0F172A;
  --radius-card:16px;
  --radius-btn:12px;
  --shadow-sm:0 10px 30px rgba(16,24,40,.06);
  --shadow-lg:0 16px 40px rgba(16,24,40,.12);
  --sidebar-w:248px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",Arial,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;border:0;}
a{color:var(--primary);text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease;}
a:hover{color:var(--primary-dark);}
h1,h2,h3,h4{margin:0;color:var(--text);line-height:1.28;font-weight:700;letter-spacing:-.01em;}
p{margin:0 0 1em;}
ul,ol{margin:0;padding:0;}
button,input,select,textarea{font-family:inherit;font-size:100%;}
:focus-visible{outline:3px solid rgba(36,88,211,.35);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 24px;}

/* ============ 左侧竖向导航 ============ */
.side-nav{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--sidebar-w);
  background:#fff;
  border-right:1px solid var(--border);
  display:flex;
  flex-direction:column;
  padding:26px 18px 22px;
  z-index:60;
}
.side-brand{display:flex;align-items:center;gap:12px;padding:0 8px 20px;border-bottom:1px solid var(--border);}
.brand-mark{
  width:42px;height:42px;flex:0 0 42px;
  border-radius:13px;
  background:linear-gradient(135deg,#2458D3,#0FB5A6);
  color:#fff;font-weight:800;font-size:15px;letter-spacing:.5px;
  display:flex;align-items:center;justify-content:center;
}
.brand-text{font-size:15px;font-weight:700;line-height:1.4;color:var(--text);}
.nav-list{display:flex;flex-direction:column;gap:6px;margin-top:22px;}
.nav-list a{
  position:relative;
  display:flex;align-items:center;gap:11px;
  padding:12px 14px;
  border-radius:12px;
  color:#344054;
  font-size:15px;
  font-weight:500;
  transition:background-color .2s ease,color .2s ease,transform .2s ease;
}
.nav-list a i{width:18px;text-align:center;color:#98A2B3;font-size:15px;transition:color .2s ease;}
.nav-list a:hover{background:var(--primary-soft);color:var(--primary);transform:translateX(2px);}
.nav-list a:hover i{color:var(--primary);}
.nav-list a.active{background:var(--primary-soft);color:var(--primary);font-weight:600;}
.nav-list a.active i{color:var(--primary);}
.nav-list a.active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:4px;border-radius:4px;background:var(--primary);
}
.side-cta{
  margin-top:auto;
  background:var(--primary-soft);
  border:1px solid #D8E4FF;
  border-radius:14px;
  padding:16px;
}
.side-cta p{font-size:13.5px;line-height:1.7;color:#344054;margin:0 0 12px;}

/* ============ 移动端顶部导航 ============ */
.mobile-bar{
  display:none;
  position:sticky;top:0;z-index:70;
  background:rgba(255,255,255,.96);
  backdrop-filter:saturate(150%) blur(6px);
  border-bottom:1px solid var(--border);
  padding:10px 16px;
  align-items:center;justify-content:space-between;
}
.mobile-brand{display:flex;align-items:center;gap:10px;color:var(--text);font-size:14.5px;font-weight:700;}
.mobile-brand .brand-mark{width:34px;height:34px;flex:0 0 34px;border-radius:10px;font-size:13px;}
.hamburger{
  width:42px;height:42px;border-radius:12px;
  border:1px solid var(--border);background:#fff;color:var(--text);
  display:flex;align-items:center;justify-content:center;font-size:17px;cursor:pointer;
}
.hamburger:hover{border-color:var(--primary);color:var(--primary);}
.mdrawer{position:fixed;inset:0;z-index:90;display:none;}
.mdrawer.is-open{display:block;}
.mdrawer-panel{
  position:absolute;top:0;left:0;bottom:0;width:82%;max-width:320px;
  background:#fff;padding:20px 18px;overflow-y:auto;
  box-shadow:0 20px 50px rgba(16,24,40,.22);
  animation:slideIn .24s ease;
}
@keyframes slideIn{from{transform:translateX(-16px);opacity:.4;}to{transform:translateX(0);opacity:1;}}
.mdrawer-mask{position:absolute;inset:0;border:0;background:rgba(15,23,42,.42);cursor:pointer;padding:0;}
.mdrawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--border);}
.mdrawer-close{width:38px;height:38px;border-radius:10px;border:1px solid var(--border);background:#fff;color:var(--muted);cursor:pointer;}

/* ============ 主体 ============ */
.main-wrap{margin-left:var(--sidebar-w);min-height:100vh;display:flex;flex-direction:column;}
main{flex:1 0 auto;}

/* 面包屑 */
.breadcrumb{padding:26px 0 18px;font-size:14px;color:var(--muted);display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb span.sep{color:#CBD5E1;}
.breadcrumb .current{color:#344054;font-weight:500;}

/* 文章卡片 */
.article-shell{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:20px;
  box-shadow:var(--shadow-sm);
  padding:44px 48px 40px;
  margin-bottom:56px;
}
.post-head .badge{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--primary-soft);color:var(--primary);
  font-size:13px;font-weight:600;
  padding:5px 14px;border-radius:999px;margin-bottom:18px;
}
.post-head h1{font-size:44px;margin-bottom:18px;}
.post-lead{
  font-size:16.5px;color:var(--muted);line-height:1.85;
  border-left:3px solid #D8E4FF;padding-left:16px;margin:0 0 22px;
}
.post-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;
  font-size:14px;color:var(--muted);
  padding-top:18px;border-top:1px solid var(--border);
}
.post-meta i{margin-right:6px;color:#98A2B3;}
.post-meta .meta-tag{
  background:var(--teal-soft);color:#0B8A7E;font-weight:600;
  padding:3px 12px;border-radius:999px;font-size:13px;
}
.post-cover{margin:28px 0 8px;border-radius:16px;overflow:hidden;border:1px solid var(--border);}
.post-cover img{width:100%;aspect-ratio:16/8;object-fit:cover;}

/* 正文 */
.post-body{
  max-width:820px;margin:34px auto 0;
  font-size:17.5px;line-height:1.9;color:#1D2939;
}
.post-body p{margin:0 0 1.2em;}
.post-body h2{
  position:relative;padding-left:16px;
  font-size:26px;line-height:1.35;margin:42px 0 16px;
}
.post-body h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:5px;border-radius:3px;background:var(--primary);
}
.post-body h3{font-size:20px;font-weight:600;margin:30px 0 12px;}
.post-body blockquote{
  background:var(--primary-soft);border-left:4px solid var(--primary);
  padding:16px 22px;border-radius:0 12px 12px 0;color:#334155;margin:26px 0;
}
.post-body blockquote p:last-child{margin-bottom:0;}
.post-body ul,.post-body ol{padding-left:1.35em;margin:0 0 1.2em;}
.post-body li{margin-bottom:.5em;}
.post-body img{border-radius:14px;margin:26px auto;box-shadow:var(--shadow-sm);}
.post-body table{width:100%;border-collapse:collapse;margin:26px 0;font-size:15.5px;}
.post-body th,.post-body td{border:1px solid var(--border);padding:12px 14px;text-align:left;}
.post-body th{background:var(--primary-soft);font-weight:600;}
.post-body a{color:var(--primary);text-decoration:underline;text-underline-offset:3px;}
.post-body a:hover{color:var(--primary-dark);}
.post-empty{
  text-align:center;background:#FAFBFD;border:1px dashed #D5DEEA;border-radius:16px;
  padding:56px 24px;
}
.post-empty h2{font-size:24px;margin-bottom:10px;}
.post-empty p{color:var(--muted);margin-bottom:22px;}
.post-foot{
  max-width:820px;margin:38px auto 0;padding-top:26px;border-top:1px solid var(--border);
  display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;
}
.post-foot .tip{font-size:14px;color:var(--muted);}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-btn);
  padding:13px 26px;
  font-size:15.5px;font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease,color .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 8px 20px rgba(36,88,211,.22);}
.btn-primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-2px);box-shadow:0 14px 28px rgba(36,88,211,.28);}
.btn-secondary{background:#fff;color:var(--primary);border-color:#C9D8F7;}
.btn-secondary:hover{background:var(--primary-soft);border-color:var(--primary);color:var(--primary);transform:translateY(-2px);}
.btn-ghost{background:transparent;color:var(--primary);padding:8px 4px;font-weight:600;}
.btn-ghost:hover{text-decoration:underline;}
.btn-ghost i{transition:transform .2s ease;}
.btn-ghost:hover i{transform:translateX(3px);}
.btn-block{display:flex;width:100%;}

/* 板块 */
.section{padding:70px 0;}
.section-head{max-width:720px;margin-bottom:34px;}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;font-weight:600;color:var(--teal);
  background:var(--teal-soft);padding:5px 14px;border-radius:999px;margin-bottom:14px;
}
.section-head h2{font-size:32px;margin-bottom:12px;}
.section-head p{color:var(--muted);font-size:16px;margin:0;}

/* 相关推荐卡片 */
.card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius-card);
  box-shadow:var(--shadow-sm);overflow:hidden;height:100%;
  display:flex;flex-direction:column;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:#D3E0F7;}
.card-thumb{position:relative;overflow:hidden;}
.card-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .4s ease;}
.card:hover .card-thumb img{transform:scale(1.04);}
.card-body{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1 1 auto;}
.card-cat{
  align-self:flex-start;
  font-size:12.5px;font-weight:600;color:var(--primary);
  background:var(--primary-soft);padding:3px 12px;border-radius:999px;margin-bottom:12px;
}
.card-body h3{font-size:18.5px;margin-bottom:10px;}
.card-body h3 a{color:var(--text);}
.card-body h3 a:hover{color:var(--primary);}
.card-body p{font-size:14.5px;color:var(--muted);line-height:1.75;margin:0 0 16px;}
.card-meta{display:flex;align-items:center;gap:14px;font-size:13px;color:#98A2B3;margin-top:auto;}
.card-meta i{margin-right:5px;}

/* FAQ */
.faq-wrap{background:#fff;border:1px solid var(--border);border-radius:18px;padding:10px 26px;box-shadow:var(--shadow-sm);}
.accordion{border:0;background:transparent;margin:0;}
.accordion .accordion-item{border-bottom:1px solid var(--border);}
.accordion .accordion-item:last-child{border-bottom:0;}
.accordion .accordion-title{
  font-size:17px;font-weight:600;color:var(--text);
  padding:20px 40px 20px 18px;border:0;background:transparent;position:relative;
}
.accordion .accordion-title::before{
  content:"\f067";font-family:"Font Awesome 6 Free";font-weight:900;
  position:absolute;right:14px;top:50%;transform:translateY(-50%);
  font-size:13px;color:var(--primary);transition:transform .2s ease;
}
.accordion .accordion-item.is-active .accordion-title::before{content:"\f068";}
.accordion .accordion-item.is-active .accordion-title{color:var(--primary);}
.accordion .accordion-item.is-active{border-left:3px solid var(--primary);padding-left:6px;border-radius:4px;}
.accordion .accordion-content{
  display:none;padding:0 18px 20px;font-size:15.5px;line-height:1.8;color:var(--muted);border:0;background:transparent;
}
.accordion .accordion-content p:last-child{margin-bottom:0;}

/* 咨询 CTA */
.consult-section{
  background:linear-gradient(180deg,#EEF4FF 0%,#FFFFFF 100%);
  border:1px solid #DCE7FB;border-radius:22px;
  padding:44px;margin-bottom:70px;
}
.consult-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start;}
.consult-intro h2{font-size:30px;margin-bottom:14px;}
.consult-intro p{color:var(--muted);font-size:16px;}
.consult-points{list-style:none;margin-top:22px;display:flex;flex-direction:column;gap:12px;}
.consult-points li{display:flex;gap:10px;font-size:15px;color:#344054;}
.consult-points i{color:var(--teal);margin-top:5px;}
.form-card{background:#fff;border:1px solid var(--border);border-radius:16px;padding:28px;box-shadow:var(--shadow-sm);}
.form-row{margin-bottom:16px;}
.form-row label{display:block;font-size:14px;font-weight:600;color:#344054;margin-bottom:8px;}
.form-row input,.form-row select,.form-row textarea{
  width:100%;height:48px;padding:10px 14px;
  background:#fff;border:1px solid var(--border);border-radius:10px;
  color:var(--text);font-size:15px;transition:border-color .2s ease,box-shadow .2s ease;
}
.form-row textarea{height:auto;min-height:104px;resize:vertical;line-height:1.7;}
.form-row input:focus,.form-row select:focus,.form-row textarea:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 4px rgba(36,88,211,.14);
}
.check-row{display:flex;gap:10px;align-items:flex-start;font-size:13.5px;color:var(--muted);margin:6px 0 18px;}
.check-row input{width:17px;height:17px;margin-top:4px;flex:0 0 17px;accent-color:var(--primary);}
.form-note{font-size:13px;color:#98A2B3;margin:12px 0 0;text-align:center;}
.form-success{display:none;background:var(--teal-soft);border:1px solid #B7E9E3;color:#0B8A7E;border-radius:12px;padding:12px 16px;font-size:14px;margin-top:14px;}

/* 页脚 */
.site-footer{background:var(--footer);color:#C7D0DD;margin-top:auto;}
.site-footer .container{padding-top:56px;padding-bottom:26px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:36px;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.footer-brand strong{color:#fff;font-size:16px;line-height:1.4;}
.site-footer p{font-size:14px;line-height:1.85;color:#98A2B3;margin:0;}
.site-footer h4{color:#fff;font-size:15.5px;margin-bottom:16px;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{color:#A9B4C4;font-size:14.5px;}
.footer-links a:hover{color:var(--teal);}
.footer-contact{list-style:none;display:flex;flex-direction:column;gap:12px;}
.footer-contact li{display:flex;gap:10px;font-size:14px;color:#A9B4C4;line-height:1.7;}
.footer-contact i{color:var(--teal);margin-top:5px;}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-size:13.5px;color:#8B97A8;
}

/* 响应式 */
@media (max-width:1023px){
  .side-nav{display:none;}
  .mobile-bar{display:flex;}
  .main-wrap{margin-left:0;}
  .article-shell{padding:32px 26px;}
  .post-head h1{font-size:34px;}
  .consult-grid{grid-template-columns:1fr;gap:26px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
  .section{padding:56px 0;}
}
@media (max-width:767px){
  .article-shell{padding:26px 20px;border-radius:16px;}
  .post-head h1{font-size:29px;}
  .post-body{font-size:16px;line-height:1.85;}
  .post-body h2{font-size:22px;}
  .post-body h3{font-size:18px;}
  .section-head h2{font-size:25px;}
  .consult-section{padding:26px 20px;border-radius:18px;}
  .consult-intro h2{font-size:24px;}
  .faq-wrap{padding:6px 16px;}
  .footer-grid{grid-template-columns:1fr;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .post-lead{font-size:15px;}
  .btn{width:100%;}
  .btn-ghost{width:auto;}
  .post-foot{flex-direction:column;align-items:stretch;}
  .post-meta{gap:8px 14px;font-size:13px;}
  .card-body{padding:18px;}
}

/* roulang page: category1 */
:root{
  --primary:#2458D3;
  --primary-dark:#1B45AC;
  --primary-light:#EEF4FF;
  --primary-soft:#DCE7FF;
  --accent:#0FB5A6;
  --accent-light:#E6F8F6;
  --orange:#FF7A45;
  --orange-light:#FFF1EA;
  --bg:#F6F8FB;
  --card:#FFFFFF;
  --text:#101828;
  --muted:#667085;
  --line:#E4EAF2;
  --footer:#0F172A;
  --radius-lg:18px;
  --radius:14px;
  --radius-sm:10px;
  --shadow:0 10px 30px rgba(16,24,40,.06);
  --shadow-hover:0 16px 40px rgba(16,24,40,.12);
  --sidebar-w:248px;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;border-radius:var(--radius);}
a{color:var(--primary);text-decoration:none;transition:color .2s ease,border-color .2s ease,background-color .2s ease,box-shadow .2s ease;}
a:hover{color:var(--primary-dark);}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:3px solid rgba(36,88,211,.35);
  outline-offset:2px;
  border-radius:6px;
}
h1,h2,h3,h4{color:var(--text);line-height:1.28;margin:0 0 16px;letter-spacing:-.2px;}
h1{font-size:44px;font-weight:800;}
h2{font-size:32px;font-weight:800;}
h3{font-size:21px;font-weight:700;}
p{margin:0 0 16px;}
ul{margin:0;padding:0;list-style:none;}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 24px;}
.section{padding:84px 0;}
.section--tight{padding:64px 0;}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.08em;
  color:var(--primary);background:var(--primary-light);
  padding:6px 14px;border-radius:999px;margin-bottom:16px;
}
.section-head p{color:var(--muted);font-size:16px;margin:0;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:700;line-height:1;
  padding:15px 26px;border-radius:12px;border:1px solid transparent;
  cursor:pointer;text-decoration:none;transition:all .22s ease;
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 8px 20px rgba(36,88,211,.22);}
.btn-primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-2px);box-shadow:0 12px 26px rgba(36,88,211,.3);}
.btn-secondary{background:#fff;color:var(--primary);border-color:var(--line);}
.btn-secondary:hover{background:var(--primary-light);border-color:var(--primary);color:var(--primary-dark);transform:translateY(-2px);}
.btn-ghost{background:transparent;color:var(--primary);padding-left:0;padding-right:0;}
.btn-ghost:hover{color:var(--primary-dark);text-decoration:underline;}
.btn-ghost i{transition:transform .2s ease;}
.btn-ghost:hover i{transform:translateX(4px);}
.btn-block{width:100%;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;font-weight:700;padding:5px 12px;border-radius:999px;
  background:var(--primary-light);color:var(--primary);
}
.tag--accent{background:var(--accent-light);color:#077F75;}
.tag--orange{background:var(--orange-light);color:#C64A19;}
.badge-dot{width:6px;height:6px;border-radius:50%;background:currentColor;display:inline-block;}

/* ============ 侧边栏 ============ */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
  background:#fff;border-right:1px solid var(--line);
  display:flex;flex-direction:column;padding:26px 18px;z-index:60;
}
.brand{display:flex;align-items:center;gap:10px;padding:0 6px 22px;border-bottom:1px solid var(--line);}
.brand-mark{
  width:40px;height:40px;flex:0 0 40px;border-radius:12px;
  background:linear-gradient(135deg,var(--primary),#4C7BEA);
  color:#fff;font-weight:800;font-size:15px;
  display:flex;align-items:center;justify-content:center;letter-spacing:.5px;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-text strong{font-size:14px;font-weight:800;color:var(--text);}
.brand-text span{font-size:11.5px;color:var(--muted);}
.nav-list{display:flex;flex-direction:column;gap:6px;margin-top:22px;}
.nav-list a{
  display:flex;align-items:center;gap:10px;
  padding:12px 14px;border-radius:12px;
  font-size:14.5px;font-weight:600;color:var(--muted);
  border-left:3px solid transparent;
}
.nav-list a i{width:18px;text-align:center;font-size:14px;color:#98A2B3;transition:color .2s ease;}
.nav-list a:hover{background:#F4F7FD;color:var(--primary);}
.nav-list a:hover i{color:var(--primary);}
.nav-list a.active{
  background:var(--primary-light);color:var(--primary);
  border-left-color:var(--primary);font-weight:700;
}
.nav-list a.active i{color:var(--primary);}
.sidebar-foot{margin-top:auto;padding-top:20px;}
.sidebar-card{
  background:linear-gradient(160deg,#EFF4FF,#FFFFFF);
  border:1px solid var(--line);border-radius:var(--radius);padding:18px;
}
.sidebar-card h4{font-size:15px;margin-bottom:8px;}
.sidebar-card p{font-size:13px;color:var(--muted);line-height:1.7;margin-bottom:14px;}
.sidebar-card .btn{font-size:13.5px;padding:12px 18px;}

/* ============ 移动端顶栏与抽屉 ============ */
.mobile-topbar{
  display:none;position:sticky;top:0;z-index:70;
  background:rgba(255,255,255,.96);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.mobile-topbar-inner{
  display:flex;align-items:center;justify-content:space-between;
  padding:12px 18px;gap:12px;
}
.mobile-topbar .brand{padding:0;border:0;gap:8px;}
.mobile-topbar .brand-mark{width:34px;height:34px;flex:0 0 34px;border-radius:10px;font-size:13px;}
.mobile-topbar .brand-text strong{font-size:13px;}
.mobile-topbar .brand-text span{display:none;}
.hamburger{
  width:42px;height:42px;border-radius:11px;border:1px solid var(--line);
  background:#fff;color:var(--primary);font-size:17px;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
}
.hamburger:hover{background:var(--primary-light);border-color:var(--primary);}
.drawer{
  position:fixed;top:0;left:0;bottom:0;width:282px;max-width:86vw;
  background:#fff;z-index:100;padding:24px 18px;overflow-y:auto;
  transform:translateX(-102%);transition:transform .28s ease;
  box-shadow:0 20px 50px rgba(16,24,40,.18);
}
.drawer.open{transform:translateX(0);}
.drawer-overlay{
  position:fixed;inset:0;background:rgba(16,24,40,.45);
  opacity:0;visibility:hidden;transition:opacity .28s ease;z-index:90;
}
.drawer-overlay.open{opacity:1;visibility:visible;}
.drawer-close{
  position:absolute;top:16px;right:16px;width:36px;height:36px;border-radius:10px;
  border:1px solid var(--line);background:#fff;color:var(--muted);cursor:pointer;
}

/* ============ 主区域 ============ */
.page-shell{margin-left:var(--sidebar-w);min-height:100vh;display:flex;flex-direction:column;}
main{flex:1;}

/* ============ 面包屑 ============ */
.breadcrumb-bar{background:#fff;border-bottom:1px solid var(--line);}
.breadcrumb-bar .container{padding-top:14px;padding-bottom:14px;}
.breadcrumb{font-size:13.5px;color:var(--muted);display:flex;flex-wrap:wrap;gap:8px;align-items:center;}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .sep{color:#C3CCDA;}
.breadcrumb .current{color:var(--text);font-weight:600;}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;
  background-color:#EEF4FF;
  background-image:linear-gradient(100deg,rgba(238,244,255,.96) 0%,rgba(255,255,255,.9) 55%,rgba(255,255,255,.72) 100%),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.hero-grid{
  display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center;
  padding:78px 0 72px;
}
.hero h1{font-size:48px;margin-bottom:20px;}
.hero h1 .hl{
  background:linear-gradient(180deg,transparent 62%,rgba(36,88,211,.18) 62%);
  padding:0 2px;
}
.hero-sub{font-size:17px;color:#3A4761;max-width:600px;margin-bottom:26px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:28px;}
.hero-trust{display:flex;flex-wrap:wrap;gap:10px;}
.hero-trust span{
  display:inline-flex;align-items:center;gap:7px;
  background:#fff;border:1px solid var(--line);border-radius:999px;
  padding:8px 15px;font-size:13px;color:var(--muted);font-weight:600;
  box-shadow:0 4px 14px rgba(16,24,40,.04);
}
.hero-trust i{color:var(--accent);}
.hero-visual{position:relative;}
.hero-visual img{
  border-radius:var(--radius-lg);
  box-shadow:0 24px 60px rgba(16,24,40,.16);
  border:1px solid rgba(255,255,255,.7);
}
.hero-float{
  position:absolute;left:-18px;bottom:26px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:16px 20px;display:flex;align-items:center;gap:14px;
}
.hero-float .num{font-size:24px;font-weight:800;color:var(--primary);line-height:1;}
.hero-float .txt{font-size:12.5px;color:var(--muted);line-height:1.5;}

/* ============ 步骤时间线 ============ */
.steps{position:relative;display:flex;flex-direction:column;gap:18px;}
.steps::before{
  content:"";position:absolute;left:31px;top:14px;bottom:14px;width:2px;
  background:linear-gradient(180deg,var(--primary-soft),rgba(36,88,211,.08));
}
.step{
  position:relative;display:grid;grid-template-columns:64px 1fr auto;gap:22px;align-items:center;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:24px 28px;box-shadow:var(--shadow);transition:all .25s ease;
}
.step:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px);border-color:#D3E0FA;}
.step-num{
  width:64px;height:64px;border-radius:16px;flex:0 0 64px;
  background:var(--primary-light);color:var(--primary);
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  font-weight:800;font-size:19px;line-height:1;
}
.step-num small{font-size:10.5px;font-weight:700;letter-spacing:.08em;margin-top:3px;color:#7A93C9;}
.step-body h3{font-size:19px;margin-bottom:8px;}
.step-body p{font-size:15px;color:var(--muted);margin:0;}
.step-icon{
  width:46px;height:46px;border-radius:13px;background:var(--accent-light);
  color:#07857A;display:flex;align-items:center;justify-content:center;font-size:18px;
}

/* ============ 图文说明 ============ */
.split{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
  padding:34px 0;
}
.split--reverse .split-media{order:2;}
.split-media img{border-radius:var(--radius-lg);box-shadow:var(--shadow);border:1px solid var(--line);}
.split-body h3{font-size:26px;margin-bottom:16px;}
.split-body p{color:var(--muted);font-size:15.5px;}
.check-list{margin-top:8px;}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;
  padding:11px 0;border-bottom:1px dashed var(--line);font-size:15px;color:#344054;
}
.check-list li:last-child{border-bottom:0;}
.check-list i{color:var(--accent);margin-top:5px;font-size:14px;}
.note-box{
  margin-top:22px;background:var(--primary-light);border-left:4px solid var(--primary);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;padding:16px 20px;
  font-size:14.5px;color:#25427F;
}

/* ============ 关联套餐入口 ============ */
.link-cards{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.link-card{
  display:grid;grid-template-columns:150px 1fr;gap:22px;align-items:center;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:22px;box-shadow:var(--shadow);transition:all .25s ease;
}
.link-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-4px);border-color:#D3E0FA;}
.link-card img{height:112px;width:100%;object-fit:cover;border-radius:12px;}
.link-card h3{font-size:19px;margin-bottom:8px;}
.link-card p{font-size:14.5px;color:var(--muted);margin-bottom:12px;}
.link-card .go{font-size:14px;font-weight:700;display:inline-flex;align-items:center;gap:8px;}
.link-card .go i{transition:transform .2s ease;}
.link-card:hover .go i{transform:translateX(4px);}

/* ============ FAQ ============ */
.accordion{border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;background:#fff;box-shadow:var(--shadow);}
.accordion .accordion-item{border-bottom:1px solid var(--line);position:relative;}
.accordion .accordion-item:last-child{border-bottom:0;}
.accordion .accordion-title{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 26px;font-size:17px;font-weight:700;color:var(--text);
  background:#fff;border:0;border-left:4px solid transparent;transition:all .2s ease;
}
.accordion .accordion-title:hover{background:#F8FAFF;color:var(--primary);}
.accordion .accordion-title::before{display:none;}
.accordion .accordion-title .faq-icon{
  width:30px;height:30px;flex:0 0 30px;border-radius:9px;background:var(--primary-light);
  color:var(--primary);display:flex;align-items:center;justify-content:center;
  font-size:12px;transition:transform .25s ease;
}
.accordion .accordion-item.is-active .accordion-title{border-left-color:var(--primary);color:var(--primary);}
.accordion .accordion-item.is-active .faq-icon{transform:rotate(180deg);background:var(--primary);color:#fff;}
.accordion .accordion-content{padding:0 26px 22px 30px;color:#475467;font-size:15.5px;line-height:1.9;border:0;background:#fff;}
.accordion .accordion-content p:last-child{margin-bottom:0;}

/* ============ CTA ============ */
.cta-band{
  background:linear-gradient(120deg,#F2F7FF 0%,#FFFFFF 70%);
  border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:48px;display:grid;grid-template-columns:1.3fr .7fr;gap:36px;align-items:center;
  box-shadow:var(--shadow);
}
.cta-band h2{font-size:30px;margin-bottom:14px;}
.cta-band p{color:var(--muted);font-size:15.5px;margin-bottom:0;}
.cta-band .cta-actions{display:flex;flex-direction:column;gap:12px;}
.cta-list{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px;}
.cta-list span{
  background:#fff;border:1px solid var(--line);border-radius:999px;
  padding:7px 14px;font-size:13px;color:var(--muted);font-weight:600;
}

/* ============ 页脚 ============ */
.site-footer{background:var(--footer);color:#C3CCDA;margin-top:40px;}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:40px;
  padding:64px 0 40px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:11px;font-size:14px;
  background:linear-gradient(135deg,var(--primary),#4C7BEA);
}
.footer-brand strong{color:#fff;font-size:15px;}
.site-footer p{font-size:14px;line-height:1.85;color:#98A2B3;margin:0;}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:18px;}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a{color:#98A2B3;font-size:14px;}
.footer-links a:hover{color:#7FE3D8;}
.footer-contact{display:flex;flex-direction:column;gap:13px;}
.footer-contact li{display:flex;gap:10px;font-size:14px;color:#98A2B3;line-height:1.7;}
.footer-contact i{color:var(--accent);margin-top:5px;font-size:13px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.09);
  padding:22px 0 30px;display:flex;flex-wrap:wrap;gap:10px;
  justify-content:space-between;font-size:13px;color:#7C8798;
}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .sidebar{display:none;}
  .mobile-topbar{display:block;}
  .page-shell{margin-left:0;}
  .hero-grid{grid-template-columns:1fr;gap:36px;padding:52px 0 48px;}
  .hero h1{font-size:36px;}
  .hero-visual{max-width:620px;}
  .hero-float{left:12px;bottom:-16px;}
  .split{grid-template-columns:1fr;gap:32px;padding:22px 0;}
  .split--reverse .split-media{order:0;}
  .cta-band{grid-template-columns:1fr;padding:34px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .section{padding:64px 0;}
}
@media (max-width:768px){
  h2{font-size:26px;}
  .hero h1{font-size:32px;}
  .hero-sub{font-size:16px;}
  .link-cards{grid-template-columns:1fr;}
  .link-card{grid-template-columns:1fr;gap:16px;}
  .link-card img{height:170px;}
  .step{grid-template-columns:56px 1fr;gap:16px;padding:20px;}
  .step-icon{display:none;}
  .step-num{width:56px;height:56px;flex:0 0 56px;border-radius:14px;font-size:17px;}
  .steps::before{left:27px;}
  .footer-grid{grid-template-columns:1fr;}
}
@media (max-width:640px){
  .container{padding:0 18px;}
  .section{padding:48px 0;}
  .hero h1{font-size:29px;}
  .hero-actions .btn{width:100%;}
  .btn{width:100%;}
  .link-card .go{width:auto;}
  .btn-ghost{width:auto;}
  .accordion .accordion-title{font-size:16px;padding:17px 18px;}
  .accordion .accordion-content{padding:0 18px 20px 22px;font-size:15px;}
  .footer-bottom{flex-direction:column;}
  .cta-list span{font-size:12.5px;}
}

/* roulang page: category2 */
:root{
  --primary:#2458D3;
  --primary-dark:#1A44A8;
  --primary-soft:#EEF4FF;
  --accent:#0FB5A6;
  --accent-soft:#E7F8F6;
  --warn:#FF7A45;
  --warn-soft:#FFF3ED;
  --bg:#F6F8FB;
  --card:#FFFFFF;
  --text:#101828;
  --muted:#667085;
  --line:#E4EAF2;
  --footer:#0F172A;
  --radius-card:16px;
  --radius-btn:11px;
  --shadow:0 10px 30px rgba(16,24,40,.06);
  --shadow-hover:0 16px 40px rgba(16,24,40,.12);
  --nav-w:246px;
  --container:1180px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB","Source Han Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;height:auto;display:block;border:0}
a{color:var(--primary);text-decoration:none;transition:color .2s ease,background .2s ease,border-color .2s ease}
a:hover{color:var(--primary-dark)}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0 0 1em}
h1,h2,h3,h4{font-family:inherit;color:var(--text);margin:0;padding:0;font-weight:800;letter-spacing:-.2px}
h1{font-size:clamp(30px,3.6vw,50px);line-height:1.24}
h2{font-size:clamp(24px,2.6vw,34px);line-height:1.3}
h3{font-size:20px;line-height:1.45;font-weight:700}
h4{font-size:16px;font-weight:700;line-height:1.5}
button,input,select,textarea{font-family:inherit;font-size:inherit}
button{background:none;border:0;cursor:pointer}
:focus-visible{outline:3px solid rgba(36,88,211,.35);outline-offset:2px;border-radius:8px}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 28px}

/* ============ 侧边导航 ============ */
.shell{display:flex;min-height:100vh}
.side-nav{
  position:fixed;top:0;left:0;width:var(--nav-w);height:100vh;
  background:#fff;border-right:1px solid var(--line);
  padding:24px 18px;display:flex;flex-direction:column;gap:24px;
  overflow-y:auto;z-index:60;
}
.brand{display:flex;align-items:center;gap:11px;text-decoration:none}
.brand-mark{
  width:42px;height:42px;flex:0 0 42px;border-radius:13px;
  background:linear-gradient(135deg,#2458D3,#0FB5A6);
  color:#fff;display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:15px;letter-spacing:.5px;
}
.brand-text{display:flex;flex-direction:column;line-height:1.3;font-weight:800;font-size:15px;color:var(--text)}
.brand-text em{font-style:normal;font-size:12px;font-weight:600;color:var(--muted);margin-top:2px}
.nav-list{display:flex;flex-direction:column;gap:6px}
.nav-list a{
  position:relative;display:flex;align-items:center;gap:11px;
  padding:12px 14px;border-radius:12px;color:#344054;
  font-size:15px;font-weight:600;line-height:1.4;
}
.nav-list a i{width:18px;text-align:center;font-size:14px;color:#98A2B3;transition:color .2s ease}
.nav-list a:hover{background:var(--primary-soft);color:var(--primary)}
.nav-list a:hover i{color:var(--primary)}
.nav-list a.active{background:var(--primary-soft);color:var(--primary)}
.nav-list a.active i{color:var(--primary)}
.nav-list a.active::before{
  content:"";position:absolute;left:0;top:11px;bottom:11px;width:3px;
  border-radius:3px;background:var(--primary);
}
.nav-cta{
  margin-top:auto;background:var(--primary-soft);border:1px solid #D8E4FB;
  border-radius:14px;padding:16px;
}
.nav-cta p{font-size:13px;color:#475467;line-height:1.7;margin:0 0 12px}

/* ============ 顶部栏 / 抽屉（移动端） ============ */
.topbar{
  display:none;position:sticky;top:0;z-index:70;
  background:rgba(255,255,255,.97);border-bottom:1px solid var(--line);
  backdrop-filter:blur(10px);
}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;padding:11px 18px}
.hamburger{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:#fff;color:var(--primary);font-size:18px;display:flex;align-items:center;justify-content:center;
  transition:.2s ease;
}
.hamburger:hover{border-color:var(--primary);background:var(--primary-soft)}
.drawer{
  position:fixed;top:0;left:0;width:286px;max-width:86vw;height:100%;
  background:#fff;padding:22px 18px;display:flex;flex-direction:column;gap:22px;
  transform:translateX(-104%);transition:transform .3s ease;
  box-shadow:0 24px 60px rgba(16,24,40,.22);z-index:95;overflow-y:auto;
}
.drawer.open{transform:translateX(0)}
.drawer-close{
  align-self:flex-end;width:38px;height:38px;border-radius:10px;border:1px solid var(--line);
  color:var(--muted);display:flex;align-items:center;justify-content:center;
}
.drawer-mask{
  position:fixed;inset:0;background:rgba(15,23,42,.45);
  opacity:0;visibility:hidden;transition:.3s ease;z-index:90;
}
.drawer-mask.open{opacity:1;visibility:visible}

.main-area{margin-left:var(--nav-w);min-width:0;flex:1;display:flex;flex-direction:column}

/* ============ 通用组件 ============ */
.section{padding:88px 0}
.section-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:780px;margin-bottom:40px}
.section-head p{color:var(--muted);font-size:16px;line-height:1.85;margin:14px 0 0}
.eyebrow{
  display:inline-flex;align-items:center;gap:7px;padding:5px 13px;border-radius:999px;
  font-size:13px;font-weight:700;background:var(--primary-soft);color:var(--primary);margin-bottom:14px;
}
.tag{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;font-size:12.5px;font-weight:700}
.tag-primary{background:var(--primary-soft);color:var(--primary)}
.tag-accent{background:var(--accent-soft);color:#0A8E84}
.tag-warn{background:var(--warn-soft);color:#D8571F}
.tag-muted{background:#F2F4F7;color:#475467}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  height:48px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:700;border:1px solid transparent;
  cursor:pointer;transition:transform .22s ease,box-shadow .22s ease,background .22s ease,color .22s ease,border-color .22s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 8px 20px rgba(36,88,211,.22)}
.btn-primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-2px);box-shadow:0 12px 28px rgba(36,88,211,.3)}
.btn-ghost{background:#fff;color:var(--primary);border-color:#CBD9F5}
.btn-ghost:hover{background:var(--primary-soft);border-color:var(--primary);color:var(--primary);transform:translateY(-2px)}
.btn-line{background:transparent;color:#344054;border-color:var(--line)}
.btn-line:hover{border-color:var(--primary);color:var(--primary);background:#fff;transform:translateY(-2px)}
.btn-block{width:100%}
.btn-sm{height:42px;padding:0 18px;font-size:14px;border-radius:10px}
.btn-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px}

/* ============ 分类 Hero ============ */
.page-hero{
  position:relative;padding:52px 0 78px;border-bottom:1px solid var(--line);
  background-color:#EEF4FF;
  background-image:linear-gradient(180deg,rgba(238,244,255,.95) 0%,rgba(246,248,251,.88) 55%,rgba(255,255,255,.97) 100%),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
}
.breadcrumb{display:flex;align-items:center;gap:9px;font-size:13px;color:var(--muted);margin-bottom:24px;flex-wrap:wrap}
.breadcrumb a{color:var(--muted);font-weight:600}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb i{font-size:10px;color:#B4BDCC}
.breadcrumb span{color:#475467;font-weight:600}
.hero-copy h1{margin:14px 0 18px;max-width:15em}
.hero-lead{font-size:17px;line-height:1.9;color:#475467;max-width:640px;margin:0}
.stat-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.stat{
  background:#fff;border:1px solid var(--line);border-radius:14px;
  padding:14px 20px;min-width:132px;box-shadow:var(--shadow);
}
.stat b{display:block;font-size:23px;line-height:1.3;color:var(--primary);font-weight:800}
.stat span{font-size:13px;color:var(--muted)}
.hero-media{position:relative;margin-top:28px}
.hero-media img{width:100%;border-radius:18px;box-shadow:0 18px 44px rgba(16,24,40,.14)}
.hero-chip{
  position:absolute;left:18px;bottom:18px;display:inline-flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.95);border:1px solid var(--line);border-radius:999px;
  padding:8px 16px;font-size:13px;font-weight:600;color:#344054;box-shadow:var(--shadow);
}
.hero-chip i{color:var(--accent)}

/* ============ 优惠阶梯 ============ */
.stair{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px;align-items:start}
.stair-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px 24px;box-shadow:var(--shadow);position:relative;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
  display:flex;flex-direction:column;
}
.stair-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#CBD9F5}
.stair-item:nth-child(2){margin-top:26px}
.stair-item:nth-child(3){margin-top:52px}
.stair-item:nth-child(4){margin-top:78px}
.stair-no{
  display:inline-flex;align-items:center;gap:6px;align-self:flex-start;
  background:var(--primary-soft);color:var(--primary);border-radius:999px;
  padding:4px 13px;font-size:12.5px;font-weight:800;margin-bottom:14px;
}
.stair-item h3{margin-bottom:10px;font-size:19px}
.stair-item p{font-size:14.5px;color:#475467;line-height:1.8;margin:0 0 16px}
.cond{
  display:flex;gap:8px;align-items:flex-start;background:#F8FAFC;border:1px dashed var(--line);
  border-radius:11px;padding:11px 13px;font-size:13px;color:#475467;line-height:1.7;margin-bottom:16px;
}
.cond i{color:var(--accent);margin-top:4px}
.stair-item .btn{margin-top:auto}

/* ============ 套餐对比 ============ */
.plan-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.plan-card{
  background:#fff;border:1px solid var(--line);border-radius:18px;
  padding:30px 26px;box-shadow:var(--shadow);display:flex;flex-direction:column;
  position:relative;transition:transform .25s ease,box-shadow .25s ease;
}
.plan-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.plan-card.featured{border:2px solid var(--primary);box-shadow:0 18px 46px rgba(36,88,211,.15)}
.plan-badge{
  position:absolute;top:-13px;left:26px;background:var(--primary);color:#fff;
  border-radius:999px;padding:4px 14px;font-size:12px;font-weight:800;letter-spacing:.3px;
}
.plan-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:6px}
.plan-card h3{font-size:21px}
.plan-desc{font-size:13.5px;color:var(--muted);margin:0 0 18px}
.plan-price{display:flex;align-items:baseline;gap:8px;padding-bottom:18px;border-bottom:1px dashed var(--line);margin-bottom:18px}
.plan-price b{font-size:24px;color:var(--text);font-weight:800}
.plan-price small{font-size:13px;color:var(--muted)}
.plan-list{display:flex;flex-direction:column;gap:11px;margin-bottom:24px}
.plan-list li{display:flex;gap:10px;font-size:14.5px;color:#344054;line-height:1.7}
.plan-list i{color:var(--accent);font-size:13px;margin-top:5px;flex:0 0 auto}
.plan-list li.off{color:#98A2B3}
.plan-list li.off i{color:#CBD5E1}
.plan-card .btn{margin-top:auto}

.table-wrap{
  margin-top:36px;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-card);box-shadow:var(--shadow);overflow-x:auto;
}
table.compare{width:100%;border-collapse:collapse;min-width:720px;font-size:15px}
table.compare th,table.compare td{padding:16px 22px;text-align:left;border-bottom:1px solid var(--line);line-height:1.7}
table.compare thead th{background:#F2F6FD;font-size:14px;font-weight:800;color:#344054;white-space:nowrap}
table.compare tbody td:first-child{font-weight:700;color:var(--text)}
table.compare tbody td{color:#475467}
table.compare tbody tr:last-child td{border-bottom:0}
table.compare tbody tr:hover{background:#FAFCFF}
.yes{color:var(--accent);font-weight:800}
.no{color:#C3CBD9;font-weight:700}
.table-note{font-size:13px;color:var(--muted);margin-top:14px}

/* ============ 服务保障 ============ */
.service-layout{display:grid;grid-template-columns:1fr 1.1fr;gap:46px;align-items:center}
.service-media{position:relative}
.service-media img{width:100%;border-radius:18px;box-shadow:0 18px 44px rgba(16,24,40,.13)}
.service-media .float-card{
  position:absolute;right:-14px;bottom:-22px;background:#fff;border:1px solid var(--line);
  border-radius:14px;padding:16px 20px;box-shadow:var(--shadow);max-width:230px;
}
.service-media .float-card b{display:block;font-size:20px;color:var(--primary)}
.service-media .float-card span{font-size:13px;color:var(--muted);line-height:1.7}
.service-list{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:28px}
.service-item{
  background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px;
  box-shadow:var(--shadow);transition:transform .25s ease,box-shadow .25s ease;
}
.service-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.service-item .ico{
  width:40px;height:40px;border-radius:12px;background:var(--primary-soft);color:var(--primary);
  display:flex;align-items:center;justify-content:center;font-size:16px;margin-bottom:12px;
}
.service-item h3{font-size:16.5px;margin-bottom:7px}
.service-item p{font-size:14px;color:#475467;line-height:1.8;margin:0}

/* ============ FAQ ============ */
.faq-list{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow);overflow:hidden;
}
.faq-list .accordion-item{position:relative;border-bottom:1px solid var(--line)}
.faq-list .accordion-item:last-child{border-bottom:0}
.faq-list .accordion-title{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 26px;font-size:17px;font-weight:700;color:var(--text);
  background:#fff;border:0;text-decoration:none;line-height:1.6;
  transition:color .2s ease,background .2s ease;
}
.faq-list .accordion-title:hover{color:var(--primary);background:#FBFCFE}
.faq-list .accordion-title .mark{
  width:28px;height:28px;flex:0 0 28px;border-radius:9px;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;font-size:12px;color:var(--muted);
  transition:.25s ease;
}
.faq-list .accordion-item.is-open .accordion-title{color:var(--primary)}
.faq-list .accordion-item.is-open .accordion-title .mark{
  background:var(--primary);border-color:var(--primary);color:#fff;transform:rotate(180deg);
}
.faq-list .accordion-item.is-open::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:3px;background:var(--primary);
}
.faq-list .accordion-content{max-height:0;overflow:hidden;transition:max-height .32s ease;background:#FBFCFE}
.faq-list .acc-inner{padding:0 26px 22px 26px;font-size:15px;line-height:1.9;color:#475467}

/* ============ 咨询表单 ============ */
.cta-layout{display:grid;grid-template-columns:.9fr 1.1fr;gap:44px;align-items:start}
.check-list{display:flex;flex-direction:column;gap:14px;margin-top:24px}
.check-list li{display:flex;gap:11px;font-size:15px;color:#344054;line-height:1.8}
.check-list i{color:var(--accent);margin-top:5px}
.consult-form{
  background:#fff;border:1px solid var(--line);border-radius:18px;
  padding:32px;box-shadow:var(--shadow);
}
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;font-weight:700;color:#344054;margin-bottom:8px}
.field input[type="text"],
.field input[type="tel"],
.field select,
.field textarea{
  width:100%;height:48px;padding:0 14px;border:1px solid var(--line);
  border-radius:10px;background:#fff;color:var(--text);font-size:15px;
  box-shadow:none;margin:0;transition:border-color .2s ease,box-shadow .2s ease;
}
.field select{
  appearance:none;-webkit-appearance:none;padding-right:42px;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23667085'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 14px center;background-size:13px;
}
.field textarea{height:auto;min-height:118px;padding:13px 14px;line-height:1.75;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--primary);box-shadow:0 0 0 4px rgba(36,88,211,.14);outline:0;
}
.check-row{display:flex;gap:11px;align-items:flex-start;font-size:13.5px;color:#475467;line-height:1.75;margin:6px 0 20px}
.check-row input{width:18px;height:18px;margin:4px 0 0;accent-color:var(--primary);flex:0 0 auto}
.form-msg{display:none;margin-top:16px;padding:13px 16px;border-radius:10px;font-size:14px;line-height:1.7}
.form-msg.ok{display:block;background:var(--accent-soft);border:1px solid #BEEBE6;color:#0A8E84}
.form-note{font-size:13px;color:var(--muted);margin:14px 0 0}

/* ============ 页脚 ============ */
.site-footer{background:var(--footer);color:#CBD5E1;padding:64px 0 26px;margin-top:auto}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:34px}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:16px;color:#fff}
.footer-brand strong{font-size:15px;font-weight:800}
.site-footer p{font-size:14px;line-height:1.85;color:#94A3B8;margin:0;max-width:340px}
.site-footer h4{color:#fff;font-size:15px;margin:0 0 16px}
.footer-links{display:flex;flex-direction:column;gap:11px}
.footer-links a{color:#CBD5E1;font-size:14px}
.footer-links a:hover{color:#7FE7DC}
.footer-contact{display:flex;flex-direction:column;gap:13px;font-size:14px;color:#CBD5E1}
.footer-contact li{display:flex;gap:10px;align-items:flex-start;line-height:1.75}
.footer-contact i{color:#7FE7DC;margin-top:5px;flex:0 0 auto}
.footer-bottom{
  margin-top:46px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:#94A3B8;
}

/* ============ 响应式 ============ */
@media (max-width:1180px){
  .service-layout{gap:34px}
  .service-media .float-card{right:0}
}
@media (max-width:1023px){
  .side-nav{display:none}
  .topbar{display:block}
  .main-area{margin-left:0}
  .section{padding:64px 0}
  .container{padding:0 22px}
  .stair{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stair-item:nth-child(2),.stair-item:nth-child(3),.stair-item:nth-child(4){margin-top:0}
  .plan-grid{grid-template-columns:1fr}
  .service-layout{grid-template-columns:1fr}
  .service-media{margin-bottom:38px}
  .cta-layout{grid-template-columns:1fr;gap:34px}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:767px){
  .section{padding:52px 0}
  h1{font-size:clamp(26px,7vw,34px)}
  .hero-lead{font-size:16px}
  .stat{flex:1 1 130px}
  .service-list{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .consult-form{padding:24px 20px}
}
@media (max-width:640px){
  .container{padding:0 18px}
  .btn{width:100%}
  .btn-row{flex-direction:column;align-items:stretch}
  .plan-scroll{overflow-x:auto;margin:0 -18px;padding:0 18px 14px;scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch}
  .plan-grid{grid-auto-flow:column;grid-template-columns:none;grid-auto-columns:83%;gap:16px}
  .plan-card{scroll-snap-align:start}
  .stair{grid-template-columns:1fr}
  .faq-list .accordion-title{padding:16px 18px;font-size:16px}
  .faq-list .acc-inner{padding:0 18px 18px 18px}
  .hero-chip{position:static;margin-top:14px;display:inline-flex}
  .service-media .float-card{position:static;margin-top:16px;max-width:none}
}