/* roulang page: index */
:root{
  --c-primary:#E8552A;
  --c-primary-d:#C7441D;
  --c-primary-soft:#FDEDE7;
  --c-ink:#1B1E22;
  --c-ink-2:#2A2F35;
  --c-accent:#14A08C;
  --c-bg:#F7F5F1;
  --c-surface:#FFFFFF;
  --c-line:#E5E0D8;
  --c-soft:#F1EEE9;
  --c-text:#1B1E22;
  --c-text-2:#4C5259;
  --c-text-3:#7A828B;
  --c-danger:#C6402E;
  --r-card:16px;
  --r-img:16px;
  --r-field:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(27,30,34,.05),0 8px 24px -12px rgba(27,30,34,.12);
  --sh-2:0 2px 4px rgba(27,30,34,.06),0 18px 40px -18px rgba(27,30,34,.22);
  --sp-section:96px;
  --font-base:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-base);
  font-size:16px;
  line-height:1.85;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease,opacity .2s ease;}
a:hover{color:var(--c-primary-d);}
button{font-family:inherit;}
h1,h2,h3,h4,h5{margin:0;color:var(--c-text);letter-spacing:-.2px;}
p{margin:0 0 18px;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:3px;border-radius:4px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:32px;padding-right:32px;}
.section{padding-top:var(--sp-section);padding-bottom:var(--sp-section);}
.section--soft{background:var(--c-soft);}
.section--tight{padding-top:64px;padding-bottom:64px;}
.section-head{max-width:720px;margin-bottom:44px;}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--c-primary);
  letter-spacing:.04em;margin-bottom:14px;
}
.section-head .eyebrow::before{
  content:"";width:20px;height:4px;border-radius:2px;background:var(--c-primary);
}
h2.section-title{font-size:34px;font-weight:700;line-height:1.3;margin-bottom:14px;}
.section-desc{font-size:16px;color:var(--c-text-2);margin:0;max-width:640px;}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--c-primary);}
.text-link::after{content:"→";transition:transform .2s ease;}
.text-link:hover::after{transform:translateX(4px);}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-field);font-weight:600;font-size:15px;line-height:1.2;
  padding:14px 28px;border:1px solid transparent;cursor:pointer;
  transition:background-color .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease;}
.btn.btn-primary{background:var(--c-primary);color:#fff;border-color:var(--c-primary);}
.btn.btn-primary:hover{background:var(--c-primary-d);border-color:var(--c-primary-d);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn.btn-primary:active{transform:translateY(0);box-shadow:none;}
.btn.btn-ghost{background:transparent;color:var(--c-ink);border-color:var(--c-ink);}
.btn.btn-ghost:hover{background:var(--c-ink);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn.btn-ghost:active{transform:translateY(0);box-shadow:none;}
.btn.btn-sm{padding:10px 18px;font-size:14px;}
.btn.btn-light-ghost{background:transparent;color:#F7F5F1;border-color:rgba(247,245,241,.5);}
.btn.btn-light-ghost:hover{background:rgba(247,245,241,.14);color:#fff;transform:translateY(-1px);}
.btn.btn-block{width:100%;}

/* 头部导航 */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:var(--c-surface);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .22s ease;
}
.site-header.is-stuck{box-shadow:var(--sh-1);}
.header-inner{display:flex;align-items:center;gap:28px;height:64px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:34px;height:34px;border-radius:10px;
  background:var(--c-primary-soft);
  display:flex;align-items:center;justify-content:center;
  border:1px solid rgba(232,85,42,.28);
}
.brand-mark svg{width:19px;height:19px;stroke:var(--c-primary);fill:none;stroke-width:1.8;}
.brand-text{font-size:17px;font-weight:800;color:var(--c-ink);letter-spacing:-.3px;white-space:nowrap;}
.brand:hover .brand-text{color:var(--c-primary-d);}
.main-nav{display:flex;align-items:center;gap:26px;}
.main-nav .nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--c-text-2);
  padding:6px 0;white-space:nowrap;
}
.main-nav .nav-link:hover{color:var(--c-primary);}
.main-nav .nav-link.active{color:var(--c-ink);font-weight:700;}
.main-nav .nav-link.active::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--c-primary);border-radius:2px;
}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px;}
.icon-btn{
  width:36px;height:36px;border-radius:var(--r-field);
  border:1px solid var(--c-line);background:var(--c-surface);
  display:inline-flex;align-items:center;justify-content:center;cursor:pointer;
  transition:border-color .2s ease,background-color .2s ease;
}
.icon-btn svg{width:16px;height:16px;stroke:var(--c-text-2);fill:none;stroke-width:1.8;}
.icon-btn:hover{border-color:var(--c-primary);background:var(--c-primary-soft);}
.icon-btn:hover svg{stroke:var(--c-primary-d);}
.nav-toggle{
  width:36px;height:36px;border-radius:var(--r-field);
  border:1px solid var(--c-line);background:var(--c-surface);
  display:none;align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle span{
  display:block;width:16px;height:2px;background:var(--c-ink);border-radius:2px;position:relative;
}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:16px;height:2px;background:var(--c-ink);border-radius:2px;
}
.nav-toggle span::before{top:-5px;}
.nav-toggle span::after{top:5px;}
.mobile-panel{
  display:none;background:var(--c-surface);
  border-top:1px solid var(--c-line);
  padding:8px 0 18px;
}
.mobile-panel.open{display:block;}
.mobile-panel a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:52px;padding:0 32px;font-size:15px;font-weight:500;color:var(--c-text-2);
  border-bottom:1px solid var(--c-soft);
}
.mobile-panel a::after{content:"›";font-size:20px;color:var(--c-text-3);line-height:1;}
.mobile-panel a.active{color:var(--c-primary);font-weight:700;}
.mobile-panel .mobile-cta{padding:16px 32px 0;border:0;}
.mobile-panel .mobile-cta::after{content:"";}
.mobile-panel .mobile-cta .btn{width:100%;}

/* Hero */
.hero{padding-top:64px;padding-bottom:88px;background:var(--c-bg);position:relative;overflow:hidden;}
.hero::before{
  content:"";position:absolute;left:-80px;top:-60px;width:320px;height:320px;
  border:1px solid rgba(232,85,42,.18);border-radius:50%;opacity:.5;pointer-events:none;
}
.hero-grid{display:grid;grid-template-columns:55% 45%;gap:48px;align-items:center;position:relative;}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--c-primary-soft);color:var(--c-primary-d);
  font-size:13px;font-weight:600;padding:6px 14px;border-radius:var(--r-pill);
  margin-bottom:20px;
}
.hero-badge i{width:6px;height:6px;border-radius:50%;background:var(--c-primary);display:inline-block;}
h1.hero-title{
  font-size:48px;font-weight:800;line-height:1.22;letter-spacing:-.5px;
  margin-bottom:18px;max-width:18em;
}
h1.hero-title em{font-style:normal;color:var(--c-primary);}
.hero-sub{font-size:17px;color:var(--c-text-2);max-width:30em;margin-bottom:28px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px;}
.hero-trust{display:flex;flex-wrap:wrap;gap:10px;}
.hero-trust span{
  font-size:13px;font-weight:600;color:var(--c-text-2);
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-pill);padding:6px 14px;
}
.hero-visual{position:relative;}
.hero-visual img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:20px;box-shadow:var(--sh-2);background:var(--c-soft);
}
.hero-float{
  position:absolute;left:-28px;bottom:-24px;width:252px;
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);padding:18px 20px;box-shadow:var(--sh-2);
}
.hero-float .row-item{display:flex;align-items:baseline;justify-content:space-between;gap:10px;}
.hero-float .row-item + .row-item{margin-top:10px;padding-top:10px;border-top:1px solid var(--c-line);}
.hero-float .num{font-size:24px;font-weight:800;color:var(--c-primary);font-variant-numeric:tabular-nums;line-height:1.2;}
.hero-float .lbl{font-size:13px;color:var(--c-text-3);}

/* 服务区 */
.svc-grid{display:grid;grid-template-columns:1.15fr 1fr 1fr;grid-template-rows:auto auto;gap:24px;}
.svc-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
  display:flex;flex-direction:column;
}
.svc-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(232,85,42,.3);}
.svc-card--lead{grid-row:span 2;padding:0;overflow:hidden;}
.svc-card--lead img{width:100%;aspect-ratio:16/9;object-fit:cover;background:var(--c-soft);}
.svc-card--lead .lead-body{padding:26px 24px 24px;display:flex;flex-direction:column;flex:1;}
.svc-icon{
  width:42px;height:42px;border-radius:12px;background:var(--c-primary-soft);
  display:flex;align-items:center;justify-content:center;margin-bottom:16px;
}
.svc-icon svg{width:20px;height:20px;stroke:var(--c-primary);fill:none;stroke-width:1.7;}
.svc-card h3{font-size:20px;font-weight:600;line-height:1.45;margin-bottom:10px;}
.svc-card p{font-size:14px;color:var(--c-text-2);margin-bottom:16px;line-height:1.85;}
.svc-card .text-link{margin-top:auto;}

/* 数据带 */
.stat-band{background:var(--c-ink);color:#F7F5F1;padding:64px 0;}
.stat-band .band-title{font-size:13px;letter-spacing:.14em;color:rgba(247,245,241,.6);font-weight:600;margin-bottom:32px;}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);}
.stat-item{padding:0 28px;border-left:1px solid rgba(247,245,241,.14);}
.stat-item:first-child{border-left:0;padding-left:0;}
.stat-num{font-size:42px;font-weight:800;color:var(--c-primary);line-height:1.1;font-variant-numeric:tabular-nums;}
.stat-num small{font-size:20px;font-weight:700;margin-left:2px;}
.stat-lbl{font-size:14px;color:rgba(247,245,241,.72);margin-top:8px;}

/* 案例 */
.case-row{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.case-row + .case-row{margin-top:72px;}
.case-row.reverse .case-media{order:2;}
.case-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-img);background:var(--c-soft);box-shadow:var(--sh-1);}
.badge-tag{
  display:inline-block;font-size:12px;font-weight:600;
  background:var(--c-primary-soft);color:var(--c-primary-d);
  border-radius:var(--r-pill);padding:4px 12px;margin-bottom:14px;
}
.badge-tag--accent{background:rgba(20,160,140,.1);color:#0F7C6C;}
.case-body h3{font-size:24px;font-weight:700;line-height:1.4;margin-bottom:12px;}
.case-body p{font-size:15px;color:var(--c-text-2);margin-bottom:18px;}

/* 方案阶梯 */
.ladder{position:relative;}
.ladder-item{
  display:grid;grid-template-columns:120px 1fr;gap:28px;
  padding:30px 0;border-top:1px solid var(--c-line);align-items:start;
}
.ladder-item:last-child{border-bottom:1px solid var(--c-line);}
.ladder-num{
  font-size:44px;font-weight:800;line-height:1;color:transparent;
  -webkit-text-stroke:1.4px var(--c-primary);font-variant-numeric:tabular-nums;
}
.ladder-body h3{font-size:21px;font-weight:600;margin-bottom:8px;}
.ladder-body p{font-size:15px;color:var(--c-text-2);margin-bottom:12px;}
.dot-list li{position:relative;padding-left:18px;font-size:14px;color:var(--c-text-2);line-height:1.9;}
.dot-list li::before{
  content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:1px;background:var(--c-primary);
}
.dot-list{display:flex;flex-wrap:wrap;gap:4px 28px;}

/* CMS 列表 */
.cms-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.cms-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;min-height:100%;
}
.cms-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(232,85,42,.3);}
.cms-card--lead{grid-column:span 2;padding:0;overflow:hidden;}
.cms-card--lead .cms-cover{width:100%;aspect-ratio:16/7;object-fit:cover;background:var(--c-soft);}
.cms-card--lead .cms-inner{padding:24px;}
.cms-meta{display:flex;align-items:center;gap:12px;margin-bottom:12px;flex-wrap:wrap;}
.cms-meta .cat{
  font-size:12px;font-weight:600;color:var(--c-primary-d);
  background:var(--c-primary-soft);border-radius:var(--r-pill);padding:3px 10px;
}
.cms-meta .time{font-size:13px;color:var(--c-text-3);font-variant-numeric:tabular-nums;}
.cms-card h3{
  font-size:19px;font-weight:600;line-height:1.5;margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.cms-card h3 a{color:var(--c-ink);}
.cms-card h3 a:hover{color:var(--c-primary-d);}
.cms-summary{
  font-size:14px;color:var(--c-text-2);line-height:1.8;margin-bottom:16px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.cms-card .text-link{margin-top:auto;font-size:13px;}
.cms-empty{
  border:1px dashed var(--c-line);border-radius:var(--r-card);
  min-height:180px;max-height:220px;display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:8px;background:rgba(255,255,255,.6);
  color:var(--c-text-3);font-size:14px;
}
.cms-empty svg{width:26px;height:26px;stroke:var(--c-text-3);fill:none;stroke-width:1.5;}

/* FAQ */
.faq-wrap{display:grid;grid-template-columns:40% 60%;gap:56px;align-items:start;}
.faq-intro h2{font-size:32px;font-weight:700;line-height:1.3;margin-bottom:14px;}
.faq-intro p{font-size:15px;color:var(--c-text-2);max-width:22em;}
.accordion-item{border:0;border-bottom:1px solid var(--c-line);background:transparent;}
.accordion-item:first-child{border-top:1px solid var(--c-line);}
.accordion-header{margin:0;}
.accordion-button{
  background:transparent;box-shadow:none;padding:24px 40px 24px 0;
  font-size:17px;font-weight:600;color:var(--c-ink);line-height:1.6;
  position:relative;border-radius:0;
}
.accordion-button:not(.collapsed){color:var(--c-primary-d);background:transparent;box-shadow:none;}
.accordion-button:focus{box-shadow:none;outline:none;}
.accordion-button:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}
.accordion-button::after{
  content:"";position:absolute;right:8px;top:50%;width:14px;height:14px;
  transform:translateY(-50%);background:none;
  border-right:2px solid var(--c-primary);border-bottom:2px solid var(--c-primary);
  transition:transform .22s ease;margin:0;
}
.accordion-button:not(.collapsed)::after{transform:translateY(-50%) rotate(45deg);}
.accordion-button::before{
  content:"";position:absolute;left:-16px;top:50%;transform:translateY(-50%);
  width:4px;height:0;background:var(--c-primary);border-radius:2px;transition:height .22s ease;
}
.accordion-button:not(.collapsed)::before{height:22px;}
.accordion-body{padding:0 40px 24px 0;font-size:15px;line-height:1.9;color:var(--c-text-2);}

/* 联系区 */
.contact-sec{background:var(--c-primary-soft);}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start;}
.contact-info h2{font-size:34px;font-weight:700;line-height:1.3;margin-bottom:14px;}
.contact-info p{font-size:15px;color:var(--c-text-2);max-width:26em;margin-bottom:28px;}
.info-list li{display:flex;gap:14px;align-items:flex-start;padding:14px 0;border-bottom:1px solid rgba(232,85,42,.16);}
.info-list li:last-child{border-bottom:0;}
.info-ico{
  width:34px;height:34px;flex:0 0 34px;border-radius:10px;background:#fff;
  display:flex;align-items:center;justify-content:center;border:1px solid rgba(232,85,42,.2);
}
.info-ico svg{width:16px;height:16px;stroke:var(--c-primary);fill:none;stroke-width:1.8;}
.info-txt strong{display:block;font-size:15px;font-weight:600;color:var(--c-ink);}
.info-txt span{font-size:14px;color:var(--c-text-2);}
.form-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:32px;box-shadow:var(--sh-1);
}
.form-card h3{font-size:20px;font-weight:600;margin-bottom:6px;}
.form-card .form-tip-top{font-size:13px;color:var(--c-text-3);margin-bottom:22px;}
.field{margin-bottom:18px;}
.field label{display:block;font-size:14px;font-weight:600;color:var(--c-ink);margin-bottom:8px;}
.field .form-control,.field .form-select{
  width:100%;height:46px;border:1px solid var(--c-line);border-radius:var(--r-field);
  background:var(--c-surface);font-size:15px;color:var(--c-text);padding:0 14px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea.form-control{height:auto;min-height:120px;padding:12px 14px;line-height:1.7;resize:vertical;}
.field .form-control:focus,.field .form-select:focus{
  border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(232,85,42,.15);outline:none;
}
.field .form-control::placeholder{color:#A6ADB5;}
.form-note{font-size:12px;color:var(--c-text-3);margin:14px 0 0;}
.form-feedback{font-size:13px;color:var(--c-accent);font-weight:600;margin-top:12px;min-height:20px;}

/* 页脚 */
.site-footer{background:var(--c-ink);color:rgba(247,245,241,.72);padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px;}
.footer-brand .brand-text{color:#F7F5F1;font-size:18px;}
.footer-brand .brand-mark{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.14);}
.footer-brand .brand-mark svg{stroke:var(--c-primary);}
.footer-brand p{font-size:14px;line-height:1.8;margin:16px 0 0;max-width:24em;color:rgba(247,245,241,.62);}
.footer-col h4{font-size:14px;font-weight:600;color:#F7F5F1;letter-spacing:.04em;margin-bottom:16px;}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:14px;color:rgba(247,245,241,.72);}
.footer-col a:hover{color:var(--c-primary);}
.footer-col .contact-line{font-size:14px;color:rgba(247,245,241,.72);margin-bottom:8px;display:block;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding:20px 0 28px;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:rgba(247,245,241,.55);
}
.footer-bottom a{color:rgba(247,245,241,.55);}
.footer-bottom a:hover{color:var(--c-primary);}

/* 响应式 */
@media (max-width:1199.98px){
  .hero-grid{grid-template-columns:55% 45%;gap:36px;}
  h1.hero-title{font-size:42px;}
  .svc-grid{grid-template-columns:1fr 1fr;grid-template-rows:auto;}
  .svc-card--lead{grid-row:auto;grid-column:span 2;}
  .cms-grid{grid-template-columns:repeat(2,1fr);}
  .cms-card--lead{grid-column:span 2;}
  .stat-num{font-size:36px;}
  .case-row{gap:36px;}
}
@media (max-width:991.98px){
  :root{--sp-section:72px;}
  .main-nav{display:none;}
  .nav-toggle{display:flex;}
  .header-inner{height:56px;gap:16px;}
  .hero{padding-top:44px;padding-bottom:64px;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  h1.hero-title{font-size:36px;max-width:none;}
  .hero-float{position:static;width:100%;margin-top:18px;}
  .hero-visual img{aspect-ratio:16/10;}
  .svc-grid{grid-template-columns:1fr;}
  .svc-card--lead{grid-column:auto;}
  .stat-grid{grid-template-columns:1fr 1fr;gap:28px 0;}
  .stat-item{padding:0 20px;}
  .stat-item:nth-child(odd){border-left:0;padding-left:0;}
  .stat-item:nth-child(3),.stat-item:nth-child(4){padding-top:20px;border-top:1px solid rgba(247,245,241,.14);}
  .case-row{grid-template-columns:1fr;gap:24px;}
  .case-row.reverse .case-media{order:0;}
  .case-row + .case-row{margin-top:48px;}
  .faq-wrap{grid-template-columns:1fr;gap:28px;}
  .contact-grid{grid-template-columns:1fr;gap:32px;}
  .cms-grid{grid-template-columns:1fr 1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .ladder-item{grid-template-columns:80px 1fr;gap:18px;}
  .ladder-num{font-size:36px;}
  h2.section-title{font-size:28px;}
}
@media (max-width:767.98px){
  :root{--sp-section:56px;}
  .container{padding-left:20px;padding-right:20px;}
  h1.hero-title{font-size:31px;}
  .hero-sub{font-size:16px;}
  .hero-actions .btn{width:100%;}
  .cms-grid{grid-template-columns:1fr;}
  .cms-card--lead{grid-column:auto;}
  .cms-card--lead .cms-cover{aspect-ratio:16/9;}
  .faq-intro h2{font-size:26px;}
  .contact-info h2{font-size:26px;}
  .form-card{padding:24px 20px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;gap:6px;}
  .mobile-panel a,.mobile-panel{padding-left:0;padding-right:0;}
  .mobile-panel a{padding-left:20px;padding-right:20px;}
  .mobile-panel .mobile-cta{padding-left:20px;padding-right:20px;}
  .stat-num{font-size:32px;}
  .accordion-button{font-size:16px;padding-right:34px;}
  .ladder-body h3{font-size:19px;}
  .dot-list{flex-direction:column;gap:0;}
}
@media (max-width:519.98px){
  h1.hero-title{font-size:28px;}
  .brand-text{font-size:15px;}
  .hero-badge{font-size:12px;}
  .section-head{margin-bottom:30px;}
  h2.section-title{font-size:24px;}
}

/* roulang page: article */
:root{
  --c-primary:#E8552A;
  --c-primary-d:#C7441D;
  --c-primary-soft:#FDEDE7;
  --c-ink:#1B1E22;
  --c-ink-2:#2A2F35;
  --c-accent:#14A08C;
  --c-bg:#F7F5F1;
  --c-surface:#FFFFFF;
  --c-line:#E5E0D8;
  --c-soft:#F1EEE9;
  --c-text:#1B1E22;
  --c-text-2:#4C5259;
  --c-text-3:#7A828B;
  --r-card:16px;
  --r-img:16px;
  --r-btn:10px;
  --sh-1:0 1px 2px rgba(27,30,34,.05),0 8px 24px -12px rgba(27,30,34,.12);
  --sh-2:0 2px 4px rgba(27,30,34,.06),0 18px 40px -18px rgba(27,30,34,.22);
  --sec-pad:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--c-text);
  background:var(--c-bg);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--c-primary-d)}
button{font-family:inherit}
h1,h2,h3,h4,h5{margin:0;color:var(--c-ink);font-weight:700}
p{margin:0}
ul,ol{margin:0;padding:0}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:32px;
  padding-right:32px;
}
::selection{background:rgba(232,85,42,.18);color:var(--c-ink)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  padding:14px 28px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  text-decoration:none;
  cursor:pointer;
  transition:background-color .22s ease,color .22s ease,border-color .22s ease,transform .22s ease,box-shadow .22s ease;
}
.btn-primary{background:var(--c-primary);border-color:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-primary-d);border-color:var(--c-primary-d);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-outline{background:transparent;border-color:var(--c-ink);color:var(--c-ink)}
.btn-outline:hover{background:var(--c-ink);border-color:var(--c-ink);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-outline:active{transform:translateY(0);box-shadow:none}
.btn-sm{padding:10px 18px;font-size:14px}
.btn:focus-visible{outline:3px solid rgba(232,85,42,.35);outline-offset:2px}
.btn-light-outline{background:transparent;border-color:rgba(247,245,241,.5);color:#F7F5F1}
.btn-light-outline:hover{background:#F7F5F1;border-color:#F7F5F1;color:var(--c-ink)}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:#fff;
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .22s ease;
}
.site-header.scrolled{box-shadow:var(--sh-1)}
.header-inner{
  display:flex;
  align-items:center;
  gap:28px;
  height:64px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--c-ink);
  font-weight:800;
  font-size:17px;
  letter-spacing:-.2px;
  text-decoration:none;
  flex-shrink:0;
}
.brand:hover{color:var(--c-ink)}
.brand-mark{
  width:34px;
  height:34px;
  border-radius:10px;
  background:var(--c-primary-soft);
  display:grid;
  place-items:center;
  flex-shrink:0;
}
.brand-mark svg{
  width:20px;
  height:20px;
  fill:none;
  stroke:var(--c-primary);
  stroke-width:1.8;
  stroke-linecap:round;
  stroke-linejoin:round;
}
.brand-text{white-space:nowrap}
.main-nav{
  display:flex;
  align-items:center;
  gap:26px;
  margin-left:6px;
}
.nav-link{
  position:relative;
  display:inline-block;
  padding:6px 0;
  font-size:15px;
  color:var(--c-text-2);
  text-decoration:none;
  white-space:nowrap;
  transition:color .2s ease;
}
.nav-link:hover{color:var(--c-primary)}
.nav-link:focus-visible{outline:2px solid rgba(232,85,42,.45);outline-offset:4px;border-radius:4px}
.nav-link.active{color:var(--c-ink);font-weight:600}
.nav-link.active::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-2px;
  height:2px;
  border-radius:2px;
  background:var(--c-primary);
}
.header-actions{
  margin-left:auto;
  display:flex;
  align-items:center;
  gap:12px;
}
.icon-btn{
  width:36px;height:36px;
  display:grid;place-items:center;
  border-radius:var(--r-btn);
  border:1px solid var(--c-line);
  background:#fff;
  color:var(--c-text-2);
  cursor:pointer;
  transition:border-color .2s ease,color .2s ease,background-color .2s ease;
}
.icon-btn:hover{border-color:var(--c-primary);color:var(--c-primary)}
.icon-btn:focus-visible{outline:3px solid rgba(232,85,42,.3);outline-offset:2px}
.icon-btn svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.nav-toggle{display:none}
.search-panel{
  position:absolute;
  top:calc(100% + 10px);
  right:32px;
  width:min(340px,calc(100% - 40px));
  display:none;
  gap:8px;
  padding:12px;
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:12px;
  box-shadow:var(--sh-2);
}
.search-panel.open{display:flex}
.search-panel input{
  flex:1;
  height:42px;
  padding:0 14px;
  font-size:14px;
  color:var(--c-ink);
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-btn);
}
.search-panel input:focus{
  outline:none;
  border-color:var(--c-primary);
  box-shadow:0 0 0 3px rgba(232,85,42,.15);
}
.search-panel button{
  height:42px;
  padding:0 16px;
  font-size:14px;
  font-weight:600;
  color:#fff;
  background:var(--c-primary);
  border:1px solid var(--c-primary);
  border-radius:var(--r-btn);
  cursor:pointer;
}
.search-panel button:hover{background:var(--c-primary-d);border-color:var(--c-primary-d)}

/* ---------- 面包屑 ---------- */
.crumb-bar{background:var(--c-soft);border-bottom:1px solid var(--c-line)}
.crumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  padding:14px 0;
  font-size:13px;
  color:var(--c-text-3);
}
.crumbs a{color:var(--c-text-3);text-decoration:none}
.crumbs a:hover{color:var(--c-primary)}
.crumbs .sep{color:#B9B2A8}
.crumbs .current{
  color:var(--c-text-3);
  max-width:280px;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}

/* ---------- 文章头部 ---------- */
.article-head{padding:56px 0 0}
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 14px;
  font-size:12.5px;
  font-weight:600;
  line-height:1.6;
  color:var(--c-primary);
  background:var(--c-primary-soft);
  border-radius:999px;
}
.article-title{
  max-width:900px;
  margin:16px 0 18px;
  font-size:40px;
  font-weight:800;
  line-height:1.3;
  letter-spacing:-.5px;
  color:var(--c-ink);
}
.article-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:14px;
  padding-bottom:22px;
  font-size:14px;
  color:var(--c-text-3);
  border-bottom:1px solid var(--c-line);
}
.meta-dot{width:1px;height:14px;background:var(--c-line)}
.article-cover{
  margin:32px 0 0;
  border-radius:var(--r-img);
  overflow:hidden;
  background:var(--c-soft);
  border:1px solid var(--c-line);
}
.article-cover img{
  width:100%;
  aspect-ratio:21/9;
  object-fit:cover;
}

/* ---------- 正文 ---------- */
.article-main{padding:32px 0 72px}
.article-wrap{max-width:760px;margin:0 auto}
.article-body{
  font-size:17px;
  line-height:1.9;
  color:var(--c-text-2);
}
.article-body p{margin-bottom:22px;max-width:40em}
.article-body > p:first-of-type{font-size:18px;color:var(--c-ink)}
.article-body h2{
  position:relative;
  margin:40px 0 16px;
  padding-left:14px;
  font-size:26px;
  font-weight:700;
  line-height:1.35;
  color:var(--c-ink);
}
.article-body h2::before{
  content:"";
  position:absolute;
  left:0;top:6px;bottom:6px;
  width:4px;
  border-radius:2px;
  background:var(--c-primary);
}
.article-body h3{
  margin:32px 0 12px;
  font-size:21px;
  font-weight:600;
  line-height:1.45;
  color:var(--c-ink);
}
.article-body h4{
  margin:26px 0 10px;
  font-size:17px;
  font-weight:600;
  color:var(--c-ink);
}
.article-body ul,.article-body ol{
  margin:0 0 22px;
  padding-left:22px;
}
.article-body li{margin-bottom:10px}
.article-body ul li::marker{color:var(--c-primary)}
.article-body ol li::marker{color:var(--c-primary);font-weight:600}
.article-body blockquote{
  margin:26px 0;
  padding:20px 22px;
  background:var(--c-soft);
  border-left:3px solid var(--c-primary);
  border-radius:0 12px 12px 0;
  color:var(--c-text-2);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{
  width:100%;
  margin:24px 0 10px;
  border-radius:12px;
  border:1px solid var(--c-line);
}
.article-body figure{margin:24px 0}
.article-body figcaption{
  margin-top:8px;
  font-size:13px;
  color:var(--c-text-3);
  text-align:center;
}
.article-body table{
  width:100%;
  margin:24px 0;
  display:block;
  overflow-x:auto;
  border-collapse:collapse;
  font-size:15px;
}
.article-body th,.article-body td{
  padding:10px 14px;
  border:1px solid var(--c-line);
  text-align:left;
}
.article-body th{background:var(--c-soft);color:var(--c-ink);font-weight:600}
.article-body a{
  color:var(--c-primary);
  border-bottom:1px solid rgba(232,85,42,.35);
}
.article-body a:hover{border-bottom-color:var(--c-primary)}
.article-body strong{color:var(--c-ink);font-weight:600}
.article-note{
  margin-top:44px;
  padding-top:20px;
  border-top:1px solid var(--c-line);
  font-size:13px;
  line-height:1.8;
  color:var(--c-text-3);
}
.article-foot{
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:16px;
  margin-top:28px;
}
.page-nav{display:flex;gap:22px;font-size:14px}
.page-nav a{color:var(--c-text-2)}
.page-nav a:hover{color:var(--c-primary)}

/* ---------- 空态 ---------- */
.empty-state{
  margin-top:32px;
  padding:56px 28px;
  text-align:center;
  background:var(--c-surface);
  border:1px dashed var(--c-line);
  border-radius:var(--r-card);
}
.empty-state .empty-mark{
  width:56px;height:56px;
  margin:0 auto 18px;
  display:grid;place-items:center;
  border-radius:16px;
  background:var(--c-primary-soft);
  color:var(--c-primary);
}
.empty-state .empty-mark svg{width:26px;height:26px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.empty-state h2{font-size:22px;margin-bottom:10px}
.empty-state p{max-width:460px;margin:0 auto 24px;font-size:15px;color:var(--c-text-2)}

/* ---------- 继续浏览 ---------- */
.related{padding:56px 0 24px;border-top:1px solid var(--c-line)}
.related-head{margin-bottom:26px}
.related-head h2{
  position:relative;
  padding-left:14px;
  font-size:24px;
  font-weight:700;
}
.related-head h2::before{
  content:"";
  position:absolute;
  left:0;top:5px;bottom:5px;
  width:4px;
  border-radius:2px;
  background:var(--c-primary);
}
.related-head p{margin-top:10px;font-size:14px;color:var(--c-text-3)}
.channel-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
}
.channel-card{
  display:block;
  padding:24px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.channel-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--sh-2);
  border-color:#D8D1C6;
}
.channel-card:focus-visible{outline:3px solid rgba(232,85,42,.3);outline-offset:2px}
.channel-card .num{
  display:block;
  font-size:13px;
  font-weight:700;
  color:var(--c-accent);
  letter-spacing:1px;
  margin-bottom:10px;
}
.channel-card h3{font-size:17px;font-weight:600;line-height:1.5;color:var(--c-ink)}
.channel-card p{margin-top:8px;font-size:14px;line-height:1.75;color:var(--c-text-2)}
.channel-card .go{
  display:inline-flex;
  align-items:center;
  gap:6px;
  margin-top:14px;
  font-size:14px;
  font-weight:600;
  color:var(--c-primary);
}
.channel-card:hover .go{color:var(--c-primary-d)}

/* ---------- 底部转化 ---------- */
.cta-band{background:var(--c-primary-soft);padding:56px 0;margin-top:48px}
.cta-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:28px;
}
.cta-inner h2{font-size:28px;font-weight:700;line-height:1.35}
.cta-inner p{margin-top:10px;font-size:15px;color:var(--c-text-2);max-width:520px}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--c-ink);
  color:rgba(247,245,241,.72);
  padding:64px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:44px;
}
.footer-brand .brand{color:#F7F5F1}
.footer-brand .brand:hover{color:#fff}
.footer-brand .brand-mark{background:rgba(255,255,255,.08)}
.footer-brand .brand-mark svg{stroke:var(--c-primary)}
.footer-brand p{
  margin-top:16px;
  max-width:320px;
  font-size:14px;
  line-height:1.85;
  color:rgba(247,245,241,.72);
}
.footer-col h4{
  margin-bottom:16px;
  font-size:15px;
  font-weight:600;
  color:#F7F5F1;
}
.footer-col ul{list-style:none;display:flex;flex-direction:column;gap:10px}
.footer-col a{
  font-size:14px;
  color:rgba(247,245,241,.72);
  text-decoration:none;
}
.footer-col a:hover{color:var(--c-primary)}
.footer-col a:focus-visible{outline:2px solid rgba(232,85,42,.6);outline-offset:3px;border-radius:3px}
.contact-line{
  display:block;
  margin-bottom:10px;
  font-size:14px;
  line-height:1.7;
  color:rgba(247,245,241,.72);
}
.footer-bottom{
  display:flex;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:14px;
  padding:20px 0 28px;
  border-top:1px solid rgba(255,255,255,.1);
  font-size:13px;
  color:rgba(247,245,241,.6);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .article-title{font-size:36px}
  .channel-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:991.98px){
  .container{padding-left:24px;padding-right:24px}
  .nav-toggle{display:grid}
  .main-nav{
    position:absolute;
    top:100%;
    left:0;
    right:0;
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    margin-left:0;
    padding:8px 24px 16px;
    background:#fff;
    border-bottom:1px solid var(--c-line);
    box-shadow:var(--sh-1);
  }
  .main-nav.open{display:flex}
  .nav-link{
    display:flex;
    align-items:center;
    height:52px;
    padding:0 4px;
    font-size:16px;
    border-bottom:1px solid var(--c-line);
  }
  .nav-link.active::after{
    left:0;
    right:auto;
    top:50%;
    bottom:auto;
    width:3px;
    height:18px;
    margin-top:-9px;
    border-radius:2px;
  }
  .nav-link::before{
    content:"";
    width:0;
  }
  .nav-link:last-child{border-bottom:none}
  .search-panel{right:24px}
  .article-head{padding-top:40px}
  .article-title{font-size:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-band{margin-top:32px}
}
@media (max-width:767.98px){
  .container{padding-left:20px;padding-right:20px}
  .header-inner{height:56px;gap:16px}
  .brand{font-size:15px}
  .brand-mark{width:30px;height:30px;border-radius:9px}
  .brand-mark svg{width:18px;height:18px}
  .header-actions .btn{display:none}
  .search-panel{right:20px}
  .article-head{padding-top:32px}
  .article-title{font-size:26px;line-height:1.35;margin:14px 0 16px}
  .article-meta{font-size:13px;gap:10px;padding-bottom:18px}
  .article-cover{margin-top:24px}
  .article-cover img{aspect-ratio:16/9}
  .article-main{padding:24px 0 56px}
  .article-body{font-size:16px;line-height:1.9}
  .article-body > p:first-of-type{font-size:17px}
  .article-body h2{font-size:22px;margin-top:32px}
  .article-body h3{font-size:19px}
  .channel-grid{grid-template-columns:1fr}
  .related{padding-top:44px}
  .cta-band{padding:44px 0}
  .cta-inner h2{font-size:22px}
  .cta-inner .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px}
  .site-footer{padding-top:48px}
  .footer-bottom{flex-direction:column;gap:8px}
  .empty-state{padding:40px 20px}
}

/* roulang page: category1 */
:root{
  --c-primary:#E8552A;
  --c-primary-d:#C7441D;
  --c-primary-soft:#FDEDE7;
  --c-ink:#1B1E22;
  --c-ink-2:#2A2F35;
  --c-accent:#14A08C;
  --c-bg:#F7F5F1;
  --c-surface:#FFFFFF;
  --c-line:#E5E0D8;
  --c-soft:#F1EEE9;
  --c-text:#1B1E22;
  --c-text-2:#4C5259;
  --c-text-3:#7A828B;
  --c-light-text:#F7F5F1;
  --c-light-text-2:rgba(247,245,241,.72);
  --r-card:16px;
  --r-img:16px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(27,30,34,.05),0 8px 24px -12px rgba(27,30,34,.12);
  --sh-2:0 2px 4px rgba(27,30,34,.06),0 18px 40px -18px rgba(27,30,34,.22);
  --sp-1:8px;
  --sp-2:12px;
  --sp-3:16px;
  --sp-4:24px;
  --sp-5:32px;
  --sp-6:48px;
  --sp-7:64px;
  --sp-8:96px;
  --nav-h:64px;
  --font-base:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  padding:0;
  font-family:var(--font-base);
  font-size:16.5px;
  line-height:1.85;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;height:auto;display:block;border-radius:var(--r-img);}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--c-primary-d);}
ul,ol{margin:0;padding:0;list-style:none;}
p{margin:0 0 18px;}
h1,h2,h3,h4{margin:0;color:var(--c-text);letter-spacing:-.3px;}
button{font-family:inherit;}
:focus-visible{outline:3px solid rgba(232,85,42,.45);outline-offset:3px;border-radius:6px;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:32px;
  padding-right:32px;
}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1000;
  background:var(--c-surface);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .22s ease;
}
.site-header.is-stuck{box-shadow:var(--sh-1);}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:var(--nav-h);
  gap:var(--sp-4);
}
.header-left{
  display:flex;
  align-items:center;
  gap:28px;
  min-width:0;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--c-text);
  font-weight:800;
  font-size:17px;
  letter-spacing:-.3px;
  white-space:nowrap;
}
.brand:hover{color:var(--c-text);}
.brand-mark{
  width:34px;height:34px;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--c-line);
  border-radius:10px;
  background:var(--c-primary-soft);
  flex:0 0 auto;
}
.brand-mark svg{
  width:20px;height:20px;
  fill:none;
  stroke:var(--c-primary);
  stroke-width:1.8;
  stroke-linecap:round;
  stroke-linejoin:round;
}
.brand-text{white-space:nowrap;}
.main-nav{display:flex;align-items:center;gap:24px;}
.main-nav .nav-link{
  position:relative;
  display:inline-block;
  font-size:15px;
  font-weight:500;
  color:var(--c-text-2);
  padding:6px 0;
  white-space:nowrap;
  background:none;
  border:0;
}
.main-nav .nav-link::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-2px;
  height:2px;
  background:transparent;
  border-radius:2px;
  transition:background .2s ease;
}
.main-nav .nav-link:hover{color:var(--c-primary);}
.main-nav .nav-link.active{color:var(--c-primary);font-weight:600;}
.main-nav .nav-link.active::after{background:var(--c-primary);}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.icon-btn{
  width:36px;height:36px;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--c-line);
  border-radius:var(--r-btn);
  background:var(--c-surface);
  color:var(--c-text-2);
  cursor:pointer;
  transition:border-color .2s ease,color .2s ease,background .2s ease,transform .2s ease;
}
.icon-btn:hover{border-color:var(--c-primary);color:var(--c-primary);background:var(--c-primary-soft);}
.icon-btn svg{width:17px;height:17px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
.nav-toggle{display:none;}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  padding:14px 28px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  cursor:pointer;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn-primary{
  background:var(--c-primary);
  color:#fff;
  box-shadow:var(--sh-1);
}
.btn-primary:hover{background:var(--c-primary-d);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-1);}
.btn-ghost{
  background:transparent;
  color:var(--c-ink);
  border-color:var(--c-ink);
}
.btn-ghost:hover{background:var(--c-ink);color:var(--c-light-text);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0);}
.btn-sm{padding:10px 20px;font-size:14px;}
.btn-block{width:100%;}

/* mobile drawer */
.mobile-panel{
  display:none;
  border-top:1px solid var(--c-line);
  background:var(--c-surface);
  padding:8px 0 16px;
}
.mobile-panel.open{display:block;}
.mobile-panel a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:52px;
  padding:0 32px;
  font-size:16px;
  color:var(--c-text-2);
  border-bottom:1px solid var(--c-soft);
}
.mobile-panel a.active{color:var(--c-primary);font-weight:600;}
.mobile-panel a::after{content:"›";color:var(--c-text-3);font-size:20px;line-height:1;}
.mobile-panel .panel-cta{padding:16px 32px 0;}
.mobile-panel .panel-cta::after{content:none;}

/* ---------- page hero ---------- */
.page-hero{
  position:relative;
  background-color:var(--c-ink);
  background-image:linear-gradient(rgba(20,22,26,.72),rgba(20,22,26,.72)),url("/assets/images/backpic/back-1.webp");
  background-size:cover;
  background-position:center;
  padding:56px 0 52px;
  color:var(--c-light-text);
  overflow:hidden;
}
.page-hero::after{
  content:"";
  position:absolute;
  right:-60px;top:-60px;
  width:320px;height:320px;
  border:1px solid rgba(247,245,241,.14);
  border-radius:50%;
  pointer-events:none;
}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:rgba(247,245,241,.66);
  margin-bottom:22px;
}
.breadcrumb a{color:rgba(247,245,241,.78);}
.breadcrumb a:hover{color:#fff;}
.breadcrumb .sep{color:rgba(247,245,241,.4);}
.breadcrumb .current{color:rgba(247,245,241,.6);}
.page-hero h1{
  font-size:44px;
  line-height:1.24;
  font-weight:800;
  color:#fff;
  letter-spacing:-.5px;
  max-width:19em;
  margin-bottom:14px;
}
.page-hero .page-lead{
  font-size:16.5px;
  line-height:1.8;
  color:rgba(247,245,241,.82);
  max-width:34em;
  margin-bottom:26px;
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;}
.hero-tags .tag{
  display:inline-flex;
  align-items:center;
  padding:6px 14px;
  font-size:13px;
  font-weight:600;
  border-radius:var(--r-pill);
  background:rgba(255,255,255,.1);
  color:rgba(247,245,241,.9);
  border:1px solid rgba(255,255,255,.14);
}
.hero-tags .tag.strong{background:var(--c-primary);color:#fff;border-color:var(--c-primary);}

/* ---------- anchor bar ---------- */
.anchor-bar{
  background:var(--c-surface);
  border-bottom:1px solid var(--c-line);
}
.anchor-inner{
  display:flex;
  gap:10px;
  padding:16px 0;
  overflow-x:auto;
  scrollbar-width:none;
}
.anchor-inner::-webkit-scrollbar{display:none;}
.anchor-pill{
  flex:0 0 auto;
  padding:9px 18px;
  font-size:14px;
  font-weight:600;
  border-radius:var(--r-pill);
  border:1px solid var(--c-line);
  background:var(--c-surface);
  color:var(--c-text-2);
  white-space:nowrap;
  transition:all .2s ease;
}
.anchor-pill:hover{border-color:var(--c-primary);color:var(--c-primary);background:var(--c-primary-soft);}
.anchor-pill.current{background:var(--c-primary);border-color:var(--c-primary);color:#fff;}

/* ---------- sections ---------- */
.section{padding:var(--sp-8) 0;}
.section.soft{background:var(--c-soft);}
.section.tight{padding:72px 0;}
.section-head{max-width:720px;margin-bottom:40px;}
.h2{
  position:relative;
  font-size:34px;
  line-height:1.3;
  font-weight:700;
  padding-left:16px;
  margin-bottom:14px;
}
.h2::before{
  content:"";
  position:absolute;
  left:0;top:.28em;
  width:4px;height:20px;
  border-radius:2px;
  background:var(--c-primary);
}
.section-head p{
  font-size:16px;
  color:var(--c-text-2);
  margin:0;
  max-width:38em;
}

/* ---------- two column big cards ---------- */
.cards-two{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:24px;
}
.entry-card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  overflow:hidden;
  display:flex;
  flex-direction:column;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.entry-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#dcd5cb;}
.entry-card .thumb{
  position:relative;
  aspect-ratio:16/9;
  background:var(--c-soft);
  overflow:hidden;
}
.entry-card .thumb img{
  width:100%;height:100%;
  object-fit:cover;
  border-radius:0;
  transition:transform .4s ease;
}
.entry-card:hover .thumb img{transform:scale(1.03);}
.entry-card .thumb .num{
  position:absolute;
  left:16px;top:14px;
  font-size:13px;
  font-weight:700;
  letter-spacing:1px;
  color:#fff;
  background:rgba(27,30,34,.62);
  padding:4px 10px;
  border-radius:var(--r-pill);
}
.entry-card .body{
  padding:24px;
  display:flex;
  flex-direction:column;
  flex:1 1 auto;
}
.entry-card h3{
  font-size:20px;
  line-height:1.45;
  font-weight:600;
  margin-bottom:12px;
}
.entry-card p{
  font-size:14.5px;
  line-height:1.85;
  color:var(--c-text-2);
  margin-bottom:18px;
  display:-webkit-box;
  -webkit-line-clamp:4;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.card-meta{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:13px;
  color:var(--c-text-3);
  margin-bottom:16px;
}
.badge-pill{
  display:inline-flex;
  align-items:center;
  padding:3px 11px;
  font-size:12.5px;
  font-weight:600;
  border-radius:var(--r-pill);
  background:var(--c-primary-soft);
  color:var(--c-primary);
}
.badge-pill.accent{background:rgba(20,160,140,.1);color:#0F7E6E;}
.link-arrow{
  margin-top:auto;
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14.5px;
  font-weight:600;
  color:var(--c-primary);
}
.link-arrow span{transition:transform .2s ease;display:inline-block;}
.link-arrow:hover span{transform:translateX(4px);}

/* ---------- scenes ---------- */
.scenes{
  display:grid;
  grid-template-columns:minmax(0,.9fr) minmax(0,1.4fr);
  gap:48px;
  align-items:start;
}
.scene-list{border-top:1px solid var(--c-line);}
.scene-item{
  display:grid;
  grid-template-columns:52px minmax(0,1fr);
  gap:16px;
  padding:22px 0;
  border-bottom:1px solid var(--c-line);
}
.scene-item .idx{
  font-size:15px;
  font-weight:700;
  color:var(--c-primary);
  letter-spacing:1px;
  padding-top:2px;
}
.scene-item h3{font-size:18px;font-weight:600;margin-bottom:6px;}
.scene-item p{font-size:14.5px;line-height:1.8;color:var(--c-text-2);margin:0;max-width:40em;}

/* ---------- stats ---------- */
.stats-band{
  background:var(--c-ink);
  color:var(--c-light-text);
  padding:64px 0;
}
.stats-band .h2{color:var(--c-light-text);}
.stats-band .section-head p{color:var(--c-light-text-2);}
.stats{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:0;
  margin-top:8px;
}
.stat{
  padding:8px 24px;
  border-left:1px solid rgba(247,245,241,.14);
}
.stat:first-child{border-left:0;padding-left:0;}
.stat .num{
  font-size:42px;
  line-height:1.1;
  font-weight:800;
  color:var(--c-primary);
  letter-spacing:-1px;
  margin-bottom:8px;
}
.stat .num small{font-size:20px;font-weight:700;margin-left:2px;}
.stat .label{font-size:14px;color:var(--c-light-text-2);line-height:1.7;}

/* ---------- process ---------- */
.steps{position:relative;max-width:880px;}
.step{
  display:grid;
  grid-template-columns:88px minmax(0,1fr);
  gap:24px;
  padding:26px 0;
  border-bottom:1px solid var(--c-line);
  position:relative;
}
.step:last-child{border-bottom:0;}
.step .step-num{
  font-size:38px;
  font-weight:800;
  line-height:1;
  color:transparent;
  -webkit-text-stroke:1px var(--c-primary);
  letter-spacing:-1px;
}
.step h3{font-size:19px;font-weight:600;margin-bottom:8px;}
.step p{font-size:15px;line-height:1.85;color:var(--c-text-2);margin:0;max-width:44em;}
.step .points{
  display:flex;flex-wrap:wrap;gap:8px;margin-top:12px;
}
.point{
  font-size:13px;
  color:var(--c-text-2);
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-pill);
  padding:4px 12px;
}

/* ---------- faq ---------- */
.faq-wrap{
  display:grid;
  grid-template-columns:minmax(0,.8fr) minmax(0,1.4fr);
  gap:48px;
  align-items:start;
}
.faq-list{border-top:1px solid var(--c-line);}
.faq-item{border-bottom:1px solid var(--c-line);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  text-align:left;
  background:none;
  border:0;
  padding:24px 0;
  font-size:17px;
  font-weight:600;
  color:var(--c-text);
  cursor:pointer;
  position:relative;
  transition:color .2s ease;
}
.faq-q::before{
  content:"";
  position:absolute;
  left:-14px;top:24px;bottom:24px;
  width:4px;
  border-radius:2px;
  background:transparent;
  transition:background .2s ease;
}
.faq-item.open .faq-q{color:var(--c-primary);}
.faq-item.open .faq-q::before{background:var(--c-primary);}
.faq-icon{
  flex:0 0 auto;
  width:22px;height:22px;
  position:relative;
  transition:transform .25s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--c-primary);
  border-radius:2px;
}
.faq-icon::before{left:0;top:10px;width:22px;height:2px;}
.faq-icon::after{left:10px;top:0;width:2px;height:22px;}
.faq-item.open .faq-icon{transform:rotate(45deg);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .3s ease;
}
.faq-a p{
  font-size:15px;
  line-height:1.9;
  color:var(--c-text-2);
  margin:0;
  padding:0 0 24px;
  max-width:44em;
}

/* ---------- cta band ---------- */
.cta-band{
  background:var(--c-primary-soft);
  padding:56px 0;
}
.cta-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
}
.cta-inner h2{
  font-size:30px;
  line-height:1.35;
  font-weight:700;
  margin-bottom:10px;
}
.cta-inner p{font-size:15.5px;color:var(--c-text-2);margin:0;max-width:34em;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- footer ---------- */
.site-footer{
  background:var(--c-ink);
  color:var(--c-light-text);
  padding:72px 0 28px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand .brand{color:var(--c-light-text);font-size:17px;margin-bottom:18px;}
.footer-brand .brand:hover{color:#fff;}
.footer-brand .brand-mark{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.14);}
.footer-brand p{
  font-size:14px;
  line-height:1.85;
  color:var(--c-light-text-2);
  margin:0;
  max-width:30em;
}
.footer-col h4{
  font-size:15px;
  font-weight:600;
  color:var(--c-light-text);
  margin-bottom:18px;
}
.footer-col ul li{margin-bottom:12px;}
.footer-col ul li a{
  font-size:14px;
  color:var(--c-light-text-2);
}
.footer-col ul li a:hover{color:var(--c-primary);}
.contact-line{
  display:block;
  font-size:14px;
  line-height:1.8;
  color:var(--c-light-text-2);
  margin-bottom:12px;
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding-top:24px;
  display:flex;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:rgba(247,245,241,.55);
}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .container{padding-left:28px;padding-right:28px;}
  .main-nav{gap:18px;}
  .main-nav .nav-link{font-size:14.5px;}
  .page-hero h1{font-size:40px;}
  .scenes,.faq-wrap{gap:36px;}
}
@media (max-width:991.98px){
  :root{--nav-h:60px;}
  .container{padding-left:24px;padding-right:24px;}
  .main-nav{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-actions .btn-header{display:none;}
  .section{padding:72px 0;}
  .section.tight{padding:60px 0;}
  .page-hero{padding:44px 0 40px;}
  .page-hero h1{font-size:34px;}
  .h2{font-size:28px;}
  .scenes{grid-template-columns:minmax(0,1fr);gap:28px;}
  .faq-wrap{grid-template-columns:minmax(0,1fr);gap:20px;}
  .stats{grid-template-columns:repeat(2,minmax(0,1fr));row-gap:28px;}
  .stat{padding:8px 20px;}
  .stat:nth-child(odd){border-left:0;padding-left:0;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px;}
  .cta-inner h2{font-size:26px;}
  .step{grid-template-columns:64px minmax(0,1fr);gap:18px;}
  .step .step-num{font-size:32px;}
}
@media (max-width:767.98px){
  body{font-size:16px;}
  .container{padding-left:20px;padding-right:20px;}
  .brand{font-size:15.5px;}
  .brand-mark{width:30px;height:30px;}
  .brand-mark svg{width:18px;height:18px;}
  .mobile-panel a{padding:0 20px;}
  .mobile-panel .panel-cta{padding:16px 20px 0;}
  .page-hero{padding:36px 0 34px;}
  .page-hero h1{font-size:29px;line-height:1.3;}
  .page-hero .page-lead{font-size:15px;}
  .page-hero::after{display:none;}
  .section{padding:56px 0;}
  .section.tight{padding:48px 0;}
  .h2{font-size:24px;padding-left:14px;}
  .h2::before{height:17px;}
  .section-head{margin-bottom:28px;}
  .cards-two{grid-template-columns:minmax(0,1fr);gap:20px;}
  .entry-card .body{padding:20px;}
  .entry-card h3{font-size:18px;}
  .stats-band{padding:48px 0;}
  .stat .num{font-size:34px;}
  .step{grid-template-columns:minmax(0,1fr);gap:8px;padding:22px 0;}
  .step .step-num{font-size:26px;}
  .faq-q{font-size:16px;padding:20px 0;}
  .faq-q::before{left:-10px;}
  .cta-band{padding:44px 0;}
  .cta-inner h2{font-size:23px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
  .site-footer{padding:52px 0 24px;}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:28px;padding-bottom:32px;}
  .footer-bottom{font-size:12.5px;line-height:1.7;}
}
@media (max-width:519.98px){
  .page-hero h1{font-size:26px;}
  .stats{grid-template-columns:minmax(0,1fr);}
  .stat{border-left:0;padding:0 0 20px;border-bottom:1px solid rgba(247,245,241,.14);}
  .stat:last-child{border-bottom:0;padding-bottom:0;}
  .hero-tags .tag{font-size:12.5px;padding:5px 12px;}
}

/* roulang page: category3 */
:root{
  --c-primary:#E8552A;
  --c-primary-d:#C7441D;
  --c-primary-soft:#FDEDE7;
  --c-ink:#1B1E22;
  --c-ink-2:#2A2F35;
  --c-accent:#14A08C;
  --c-bg:#F7F5F1;
  --c-surface:#FFFFFF;
  --c-line:#E5E0D8;
  --c-soft:#F1EEE9;
  --t-1:#1B1E22;
  --t-2:#4C5259;
  --t-3:#7A828B;
  --t-inv:#F7F5F1;
  --t-inv-2:rgba(247,245,241,.72);
  --r-card:16px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(27,30,34,.05),0 8px 24px -12px rgba(27,30,34,.12);
  --sh-2:0 2px 4px rgba(27,30,34,.06),0 18px 40px -18px rgba(27,30,34,.22);
  --sp-sec:96px;
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  color:var(--t-1);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--c-primary);}
ul,ol{margin:0;padding:0;list-style:none;}
p{margin:0 0 18px;}
p:last-child{margin-bottom:0;}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--t-1);}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:3px;border-radius:4px;}
.container{max-width:1200px;margin:0 auto;padding:0 32px;width:100%;}
.section{padding:var(--sp-sec) 0;}
.section-soft{background:var(--c-soft);}
.section-tight{padding:64px 0;}

/* ---------- 按钮 ---------- */
.btn-main,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;transition:all .22s ease;line-height:1.4;
}
.btn-main{background:var(--c-primary);color:#fff;}
.btn-main:hover{background:var(--c-primary-d);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-main:active{transform:translateY(0);box-shadow:var(--sh-1);}
.btn-ghost{background:transparent;color:var(--t-1);border-color:var(--c-ink);}
.btn-ghost:hover{background:var(--c-ink);color:#fff;}
.btn-ghost:active{transform:translateY(0);}
.btn-ghost-light{background:transparent;color:var(--t-inv);border-color:rgba(247,245,241,.6);}
.btn-ghost-light:hover{background:var(--t-inv);color:var(--c-ink);border-color:var(--t-inv);}
.btn-sm{padding:10px 20px;font-size:14px;}

/* ---------- 徽章 / 标签 ---------- */
.badge-pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 13px;border-radius:var(--r-pill);
  background:var(--c-primary-soft);color:var(--c-primary);
  font-size:12.5px;font-weight:600;line-height:1.6;
}
.badge-accent{background:rgba(20,160,140,.12);color:#0F8574;}
.badge-dark{background:rgba(255,255,255,.1);color:var(--t-inv);}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;background:#fff;
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh-1);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:64px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:36px;height:36px;border-radius:10px;background:var(--c-primary-soft);
  display:inline-flex;align-items:center;justify-content:center;flex-shrink:0;
}
.brand-mark svg{width:20px;height:20px;fill:none;stroke:var(--c-primary);stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;}
.brand-text{font-size:16.5px;font-weight:800;letter-spacing:-.2px;color:var(--t-1);white-space:nowrap;}
.main-nav{display:flex;align-items:center;gap:28px;}
.nav-link{position:relative;font-size:15px;color:var(--t-2);padding:6px 0;white-space:nowrap;}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--c-primary);transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.nav-link:hover{color:var(--c-primary);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--c-primary);font-weight:600;}
.nav-link.active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.icon-btn{
  width:36px;height:36px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--c-line);border-radius:var(--r-btn);background:#fff;
  color:var(--t-2);cursor:pointer;transition:all .2s ease;
}
.icon-btn:hover{border-color:var(--c-primary);color:var(--c-primary);background:var(--c-primary-soft);}
.nav-toggle{display:none;}
.mobile-panel{border-top:1px solid var(--c-line);background:#fff;}
.mobile-panel a{
  display:flex;align-items:center;justify-content:space-between;
  padding:0 4px;height:52px;font-size:15px;color:var(--t-2);border-bottom:1px solid var(--c-line);
}
.mobile-panel a:last-child{border-bottom:none;}
.mobile-panel a.active{color:var(--c-primary);font-weight:600;}
.mobile-panel a i{font-size:12px;color:var(--t-3);}
.mobile-panel .panel-cta{padding:16px 0 20px;}

/* ---------- 内页头图 ---------- */
.page-hero{
  position:relative;color:var(--t-inv);
  background-image:linear-gradient(rgba(27,30,34,.62),rgba(27,30,34,.62)),url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;background-repeat:no-repeat;
  padding:72px 0 64px;min-height:280px;display:flex;align-items:center;
}
.page-hero .container{position:relative;z-index:2;}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(247,245,241,.72);margin-bottom:20px;flex-wrap:wrap;}
.crumb a{color:rgba(247,245,241,.72);}
.crumb a:hover{color:#fff;}
.crumb i{font-size:10px;opacity:.7;}
.crumb .current{color:rgba(247,245,241,.62);}
.page-hero h1{
  font-size:46px;line-height:1.22;letter-spacing:-.5px;font-weight:800;color:#fff;
  max-width:18em;margin-bottom:14px;
}
.page-hero .hero-sub{font-size:17px;color:rgba(247,245,241,.82);max-width:34em;margin-bottom:24px;line-height:1.75;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;}
.hero-tags .badge-dark{background:rgba(255,255,255,.13);color:#fff;font-weight:500;}

/* ---------- 锚点条 ---------- */
.anchor-wrap{background:var(--c-surface);border-bottom:1px solid var(--c-line);position:sticky;top:64px;z-index:1020;}
.anchor-bar{display:flex;gap:10px;overflow-x:auto;padding:14px 0;scrollbar-width:none;}
.anchor-bar::-webkit-scrollbar{display:none;}
.anchor-pill{
  flex:0 0 auto;padding:8px 18px;border-radius:var(--r-pill);
  background:#fff;border:1px solid var(--c-line);color:var(--t-2);
  font-size:14px;font-weight:500;transition:all .2s ease;white-space:nowrap;
}
.anchor-pill:hover{border-color:var(--c-primary);color:var(--c-primary);}
.anchor-pill.current{background:var(--c-primary);border-color:var(--c-primary);color:#fff;font-weight:600;}

/* ---------- 通用标题 ---------- */
.sec-head{max-width:620px;margin-bottom:44px;}
.sec-head h2{
  position:relative;font-size:34px;line-height:1.3;font-weight:700;padding-left:18px;margin-bottom:14px;
}
.sec-head h2::before{
  content:"";position:absolute;left:0;top:8px;width:4px;height:20px;border-radius:2px;background:var(--c-primary);
}
.sec-head .sec-desc{font-size:16px;color:var(--t-2);line-height:1.8;}
.sec-head-center{margin-left:auto;margin-right:auto;text-align:left;}

/* ---------- 列表型功能模块 ---------- */
.module-list{border-top:1px solid var(--c-line);}
.module-row{
  position:relative;display:flex;gap:24px;align-items:flex-start;
  padding:26px 0 26px 0;border-bottom:1px solid var(--c-line);
  transition:padding-left .22s ease,background .22s ease;
}
.module-row::before{
  content:"";position:absolute;left:0;top:26px;bottom:26px;width:3px;border-radius:2px;
  background:var(--c-primary);opacity:0;transition:opacity .22s ease;
}
.module-row:hover::before{opacity:1;}
.module-row:hover{padding-left:18px;}
.module-thumb{
  flex:0 0 120px;width:120px;height:90px;border-radius:12px;overflow:hidden;background:var(--c-soft);
}
.module-thumb img{width:100%;height:100%;object-fit:cover;}
.module-main{flex:1 1 auto;min-width:0;}
.module-main .row-top{display:flex;align-items:center;gap:10px;margin-bottom:8px;flex-wrap:wrap;}
.module-main h3{font-size:20px;font-weight:600;line-height:1.45;margin-bottom:6px;}
.module-main .row-desc{font-size:14.5px;color:var(--t-2);line-height:1.8;max-width:40em;margin-bottom:10px;}
.row-meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;font-size:13px;color:var(--t-3);}
.row-meta span{display:inline-flex;align-items:center;gap:6px;}
.row-meta i{font-size:11px;color:var(--t-3);}
.row-link{font-size:14px;font-weight:600;color:var(--c-primary);display:inline-flex;align-items:center;gap:6px;}
.row-link i{font-size:12px;transition:transform .2s ease;}
.row-link:hover i{transform:translateX(4px);}

/* ---------- 深色数据带 ---------- */
.stat-band{background:var(--c-ink);color:var(--t-inv);padding:64px 0;}
.stat-band .band-head{max-width:560px;margin-bottom:40px;}
.stat-band h2{color:var(--t-inv);font-size:30px;line-height:1.3;margin-bottom:12px;}
.stat-band .band-head p{color:var(--t-inv-2);font-size:15.5px;}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0;}
.stat-item{padding:6px 24px;border-left:1px solid rgba(255,255,255,.12);}
.stat-item:first-child{border-left:none;padding-left:0;}
.stat-num{font-size:42px;font-weight:800;color:var(--c-primary);line-height:1.15;letter-spacing:-1px;}
.stat-num small{font-size:16px;font-weight:600;margin-left:4px;color:var(--c-primary);}
.stat-label{font-size:14px;color:var(--t-inv-2);margin-top:8px;line-height:1.7;}

/* ---------- 场景阶梯 ---------- */
.scene-steps{position:relative;max-width:920px;}
.scene-step{
  position:relative;display:flex;gap:28px;padding:28px 0;
}
.scene-step + .scene-step{border-top:1px solid var(--c-line);}
.step-no{
  flex:0 0 82px;font-size:34px;font-weight:800;line-height:1;
  color:var(--c-primary);letter-spacing:-1px;font-variant-numeric:tabular-nums;
}
.scene-body h3{font-size:20px;font-weight:600;margin-bottom:8px;}
.scene-body p{font-size:15px;color:var(--t-2);max-width:40em;margin-bottom:10px;}
.dot-list{display:flex;flex-wrap:wrap;gap:10px 24px;}
.dot-list li{position:relative;padding-left:16px;font-size:14px;color:var(--t-2);}
.dot-list li::before{
  content:"";position:absolute;left:0;top:.68em;width:6px;height:6px;border-radius:1px;background:var(--c-primary);
}

/* ---------- 流程卡 ---------- */
.flow-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.flow-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:26px 22px;box-shadow:var(--sh-1);transition:transform .22s ease,box-shadow .22s ease;
  height:100%;
}
.flow-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.flow-card .f-icon{
  width:44px;height:44px;border-radius:12px;background:var(--c-primary-soft);
  display:flex;align-items:center;justify-content:center;margin-bottom:16px;
}
.flow-card .f-icon i{color:var(--c-primary);font-size:18px;}
.flow-card h3{font-size:17.5px;font-weight:600;margin-bottom:8px;}
.flow-card p{font-size:14px;color:var(--t-2);line-height:1.8;}

/* ---------- FAQ ---------- */
.faq-wrap{display:grid;grid-template-columns:40fr 60fr;gap:56px;align-items:start;}
.faq-side h2{font-size:32px;line-height:1.3;margin-bottom:14px;position:relative;padding-left:18px;}
.faq-side h2::before{
  content:"";position:absolute;left:0;top:8px;width:4px;height:20px;border-radius:2px;background:var(--c-primary);
}
.faq-side p{font-size:15px;color:var(--t-2);max-width:24em;}
.faq-list .accordion-item{
  background:transparent;border:none;border-bottom:1px solid var(--c-line);border-radius:0;
}
.faq-list .accordion-button{
  background:transparent;box-shadow:none;padding:24px 40px 24px 0;position:relative;
  font-size:17px;font-weight:600;color:var(--t-1);line-height:1.6;
}
.faq-list .accordion-button:not(.collapsed){
  color:var(--t-1);background:transparent;box-shadow:none;
  padding-left:16px;
}
.faq-list .accordion-button:not(.collapsed)::before{
  content:"";position:absolute;left:0;top:26px;bottom:26px;width:4px;border-radius:2px;background:var(--c-primary);
}
.faq-list .accordion-button::after{
  content:"\2b";font-family:var(--font-sans);font-size:20px;font-weight:400;color:var(--c-primary);
  background-image:none;width:24px;height:24px;line-height:1;display:flex;align-items:center;justify-content:center;
  transform:none;transition:transform .22s ease;position:absolute;right:0;top:26px;
}
.faq-list .accordion-button:not(.collapsed)::after{transform:rotate(45deg);}
.faq-list .accordion-body{
  padding:0 24px 24px 16px;font-size:15px;line-height:1.9;color:var(--t-2);
}
.faq-list .accordion-button:focus{box-shadow:none;outline:2px solid var(--c-primary);outline-offset:-2px;}

/* ---------- 底部转化带 ---------- */
.cta-band{
  background:var(--c-primary-soft);padding:56px 0;border-radius:0;
}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
.cta-inner h2{font-size:30px;line-height:1.3;margin-bottom:10px;}
.cta-inner p{font-size:15.5px;color:var(--t-2);margin:0;max-width:34em;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-ink);color:var(--t-inv);padding:72px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px;}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand .brand-text{color:#fff;}
.footer-brand .brand-mark{background:rgba(255,255,255,.08);}
.footer-brand p{font-size:14px;line-height:1.85;color:var(--t-inv-2);max-width:32em;}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:18px;}
.footer-col ul li{margin-bottom:12px;}
.footer-col ul li a{font-size:14px;color:var(--t-inv-2);}
.footer-col ul li a:hover{color:var(--c-primary);}
.contact-line{display:block;font-size:14px;color:var(--t-inv-2);margin-bottom:12px;line-height:1.75;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);padding:22px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(247,245,241,.6);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .container{padding:0 28px;}
  .page-hero h1{font-size:40px;}
  .main-nav{gap:20px;}
  .nav-link{font-size:14.5px;}
  .flow-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px;}
  .footer-brand{grid-column:1/-1;}
}
@media (max-width:991.98px){
  :root{--sp-sec:72px;}
  .main-nav{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-actions .btn-main{display:none;}
  .page-hero{padding:56px 0 48px;}
  .page-hero h1{font-size:34px;}
  .page-hero .hero-sub{font-size:16px;}
  .anchor-wrap{top:64px;}
  .faq-wrap{grid-template-columns:1fr;gap:32px;}
  .stat-grid{grid-template-columns:repeat(2,1fr);gap:28px 0;}
  .stat-item{border-left:none;padding:0;}
  .stat-item:nth-child(2n){padding-left:24px;border-left:1px solid rgba(255,255,255,.12);}
  .stat-num{font-size:36px;}
  .sec-head h2,.faq-side h2{font-size:27px;}
  .module-row{gap:18px;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .footer-brand{grid-column:1/-1;}
  .cta-inner h2{font-size:25px;}
}
@media (max-width:767.98px){
  :root{--sp-sec:56px;}
  .container{padding:0 20px;}
  .header-inner{height:56px;}
  .brand-text{font-size:15px;white-space:normal;line-height:1.3;max-width:150px;}
  .brand-mark{width:32px;height:32px;}
  .page-hero{padding:44px 0 40px;min-height:0;}
  .page-hero h1{font-size:29px;line-height:1.28;}
  .page-hero .hero-sub{font-size:15px;}
  .anchor-wrap{top:56px;}
  .module-row{flex-direction:column;gap:14px;padding:22px 0;}
  .module-thumb{width:100%;height:auto;aspect-ratio:16/9;flex:none;}
  .module-row:hover{padding-left:0;}
  .flow-grid{grid-template-columns:1fr;}
  .scene-step{flex-direction:column;gap:8px;padding:22px 0;}
  .step-no{font-size:26px;flex:none;}
  .stat-band{padding:48px 0;}
  .stat-band h2{font-size:24px;}
  .stat-num{font-size:32px;}
  .faq-list .accordion-button{font-size:16px;padding:20px 36px 20px 0;}
  .faq-list .accordion-button::after{top:22px;}
  .faq-list .accordion-body{padding:0 16px 20px 12px;}
  .cta-band{padding:44px 0;}
  .cta-inner .btn-main{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .site-footer{padding-top:52px;}
}

/* roulang page: category2 */
:root{
  --c-primary:#E8552A;
  --c-primary-d:#C7441D;
  --c-primary-soft:#FDEDE7;
  --c-ink:#1B1E22;
  --c-ink-2:#2A2F35;
  --c-accent:#14A08C;
  --c-bg:#F7F5F1;
  --c-surface:#FFFFFF;
  --c-line:#E5E0D8;
  --c-soft:#F1EEE9;
  --c-text:#1B1E22;
  --c-text-2:#4C5259;
  --c-text-3:#7A828B;
  --r-card:16px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(27,30,34,.05),0 8px 24px -12px rgba(27,30,34,.12);
  --sh-2:0 2px 4px rgba(27,30,34,.06),0 18px 40px -18px rgba(27,30,34,.22);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16.5px;
  line-height:1.85;
  color:var(--c-text);
  background:var(--c-bg);
  font-variant-numeric:tabular-nums;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--c-primary-d)}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding-left:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:3px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.section{padding:96px 0}
.section-soft{background:var(--c-soft)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--c-primary);letter-spacing:.04em;margin-bottom:14px}
.eyebrow i{font-size:12px}
.section-title{font-size:34px;font-weight:700;line-height:1.3;letter-spacing:-.4px;margin:0 0 14px}
.section-title::before{content:"";display:block;width:20px;height:4px;border-radius:2px;background:var(--c-primary);margin-bottom:12px}
.section-desc{font-size:15.5px;color:var(--c-text-2);max-width:40em;margin:0}
.section-head{max-width:760px;margin-bottom:40px}

/* 导航 */
.site-header{position:sticky;top:0;z-index:1030;background:#fff;border-bottom:1px solid var(--c-line);transition:box-shadow .25s ease}
.site-header.is-scrolled{box-shadow:var(--sh-1)}
.nav-wrap{display:flex;align-items:center;gap:28px;height:64px}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:17px;font-weight:800;letter-spacing:-.2px;color:var(--c-ink);white-space:nowrap}
.brand:hover{color:var(--c-ink)}
.brand-mark{width:34px;height:34px;border-radius:10px;background:var(--c-ink);display:grid;place-items:center;flex:0 0 auto}
.brand-mark svg{width:20px;height:20px;fill:none;stroke:var(--c-primary);stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.main-nav{display:flex;align-items:center;gap:24px}
.nav-link{position:relative;display:inline-block;font-size:15px;font-weight:500;color:var(--c-text-2);padding:6px 0;white-space:nowrap;transition:color .2s ease}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;background:var(--c-primary);transform:scaleX(0);transform-origin:left center;transition:transform .22s ease}
.nav-link:hover{color:var(--c-ink)}
.nav-link:hover::after,.nav-link.active::after{transform:scaleX(1)}
.nav-link.active{color:var(--c-primary);font-weight:600}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.icon-btn{width:36px;height:36px;border-radius:var(--r-btn);border:1px solid var(--c-line);background:#fff;color:var(--c-text-2);display:grid;place-items:center;cursor:pointer;transition:border-color .2s,color .2s,background .2s}
.icon-btn:hover{border-color:var(--c-primary);color:var(--c-primary);background:var(--c-primary-soft)}
.nav-toggle{display:none;width:38px;height:38px;border-radius:var(--r-btn);border:1px solid var(--c-line);background:#fff;color:var(--c-ink);cursor:pointer;place-items:center;font-size:15px}
.nav-toggle:hover{border-color:var(--c-primary);color:var(--c-primary)}
.mobile-panel{display:none;background:#fff;border-top:1px solid var(--c-line)}
.mobile-panel.open{display:block}
.m-link{display:flex;align-items:center;justify-content:space-between;height:52px;padding:0 20px;border-bottom:1px solid var(--c-line);font-size:15px;color:var(--c-text-2)}
.m-link i{font-size:12px;color:var(--c-text-3)}
.m-link.active{color:var(--c-primary);font-weight:600}
.m-link:hover{background:var(--c-soft);color:var(--c-primary)}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:15px;font-weight:600;line-height:1.2;padding:14px 26px;border-radius:var(--r-btn);border:1px solid transparent;cursor:pointer;transition:background .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease;white-space:nowrap}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-primary-d);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-ghost{background:transparent;border-color:var(--c-ink);color:var(--c-ink)}
.btn-ghost:hover{background:var(--c-ink);color:#fff}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{padding:11px 20px;font-size:14px}

/* 顶部头图 */
.page-banner{
  position:relative;
  display:flex;
  align-items:center;
  min-height:290px;
  padding:60px 0;
  color:#F7F5F1;
  background-image:linear-gradient(rgba(27,30,34,.66),rgba(27,30,34,.66)),url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
  background-repeat:no-repeat;
}
.page-banner h1{font-size:40px;font-weight:800;line-height:1.24;letter-spacing:-.6px;color:#fff;max-width:20em;margin:16px 0 14px}
.banner-lead{font-size:16.5px;line-height:1.8;color:rgba(247,245,241,.82);max-width:34em;margin:0}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(247,245,241,.68);flex-wrap:wrap}
.crumb a{color:rgba(247,245,241,.82)}
.crumb a:hover{color:var(--c-primary)}
.crumb i{font-size:10px;opacity:.6}
.crumb span{color:rgba(247,245,241,.6)}

/* 锚点条 */
.anchor-bar{background:#fff;border-bottom:1px solid var(--c-line)}
.anchor-inner{display:flex;align-items:center;gap:10px;padding-top:16px;padding-bottom:16px;overflow-x:auto;scrollbar-width:none}
.anchor-inner::-webkit-scrollbar{display:none}
.anchor-pill{display:inline-block;padding:9px 18px;border-radius:var(--r-pill);border:1px solid var(--c-line);background:#fff;color:var(--c-text-2);font-size:14px;font-weight:500;white-space:nowrap;transition:all .2s ease}
.anchor-pill:hover{border-color:var(--c-primary);color:var(--c-primary);background:var(--c-primary-soft)}
.anchor-pill.active{background:var(--c-primary);border-color:var(--c-primary);color:#fff}

/* 三列紧凑卡 */
.compact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.compact-card{display:flex;flex-direction:column;height:100%;padding:26px 24px;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-1);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease}
.compact-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#DCD5CA}
.icon-tile{width:48px;height:48px;border-radius:12px;background:var(--c-primary-soft);color:var(--c-primary);display:grid;place-items:center;font-size:19px;margin-bottom:18px;transition:background .22s ease,color .22s ease}
.compact-card:hover .icon-tile{background:var(--c-primary);color:#fff}
.compact-card h3{font-size:19px;font-weight:600;line-height:1.45;margin:0 0 8px;letter-spacing:-.2px}
.compact-card p{margin:0;font-size:14.5px;line-height:1.8;color:var(--c-text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* 步骤 */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:8px}
.step{padding-left:24px;border-left:1px solid var(--c-line)}
.step:first-child{border-left:0;padding-left:0}
.step-num{font-size:32px;font-weight:800;line-height:1;letter-spacing:-1px;color:var(--c-primary);margin-bottom:14px}
.step h3{font-size:19px;font-weight:600;margin:0 0 8px}
.step p{margin:0;font-size:14.5px;line-height:1.8;color:var(--c-text-2)}

/* 图文分栏 */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split-media img{width:100%;border-radius:var(--r-card);box-shadow:var(--sh-1);background:var(--c-soft)}
.split-body p{font-size:16px;line-height:1.85;color:var(--c-text-2);margin:0 0 22px;max-width:40em}
.tick-list{display:grid;gap:14px}
.tick-list li{position:relative;padding-left:26px;font-size:15px;line-height:1.8;color:var(--c-text-2)}
.tick-list li::before{content:"";position:absolute;left:0;top:11px;width:8px;height:8px;border-radius:2px;background:var(--c-primary)}
.tick-list strong{color:var(--c-text);font-weight:600}

/* 深色数据带 */
.dark-band{background:var(--c-ink);color:#F7F5F1;padding:76px 0}
.dark-head{max-width:640px;margin-bottom:44px}
.dark-head h2{font-size:32px;font-weight:700;line-height:1.3;letter-spacing:-.4px;color:#F7F5F1;margin:0 0 12px}
.dark-head p{font-size:15.5px;color:rgba(247,245,241,.72);margin:0}
.data-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.data-item{padding:0 26px;border-left:1px solid rgba(255,255,255,.12)}
.data-item:first-child{border-left:0;padding-left:0}
.data-num{font-size:42px;font-weight:800;line-height:1.1;letter-spacing:-1px;color:var(--c-primary)}
.data-label{font-size:14px;line-height:1.7;color:rgba(247,245,241,.72);margin-top:8px}
.dark-band .accent{color:var(--c-accent)}

/* 注意事项列表 */
.note-list{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-1);padding:6px 30px}
.note-item{position:relative;padding:24px 0 24px 22px;border-bottom:1px solid var(--c-line);transition:padding-left .2s ease}
.note-item:last-child{border-bottom:0}
.note-item::before{content:"";position:absolute;left:0;top:32px;width:3px;height:18px;border-radius:2px;background:transparent;transition:background .2s ease}
.note-item:hover::before{background:var(--c-primary)}
.note-item h3{font-size:17px;font-weight:600;margin:0 0 6px}
.note-item p{margin:0;font-size:15px;line-height:1.85;color:var(--c-text-2);max-width:42em}

/* FAQ */
.faq-layout{display:grid;grid-template-columns:0.7fr 1.3fr;gap:56px;align-items:start}
.faq-side p{font-size:15.5px;color:var(--c-text-2);line-height:1.85;margin:0;max-width:22em}
.faq-acc .accordion-item{background:transparent;border:0;border-bottom:1px solid var(--c-line)}
.faq-acc .accordion-item:first-child{border-top:1px solid var(--c-line)}
.faq-acc .accordion-button{position:relative;background:transparent;border:0;box-shadow:none;border-radius:0;font-size:17px;font-weight:600;color:var(--c-text);padding:24px 44px 24px 18px;line-height:1.5}
.faq-acc .accordion-button::before{content:"";position:absolute;left:0;top:26px;bottom:26px;width:4px;border-radius:2px;background:var(--c-primary);opacity:0;transition:opacity .2s ease}
.faq-acc .accordion-button:not(.collapsed)::before{opacity:1}
.faq-acc .accordion-button:not(.collapsed){color:var(--c-primary);background:transparent;box-shadow:none}
.faq-acc .accordion-button:focus{box-shadow:none;outline:2px solid var(--c-primary);outline-offset:-3px}
.faq-acc .accordion-button::after{content:"+";background-image:none;font-size:22px;font-weight:400;color:var(--c-primary);width:auto;height:auto;line-height:1;transform:none;transition:transform .22s ease;margin-left:auto}
.faq-acc .accordion-button:not(.collapsed)::after{transform:rotate(45deg)}
.faq-acc .accordion-body{padding:0 44px 24px 18px;font-size:15px;line-height:1.9;color:var(--c-text-2)}

/* 底部转化 */
.cta-band{background:var(--c-primary-soft);padding:56px 0;border-top:1px solid var(--c-line)}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:36px}
.cta-inner h2{font-size:30px;font-weight:700;line-height:1.32;letter-spacing:-.4px;margin:0 0 10px}
.cta-inner p{font-size:15.5px;color:var(--c-text-2);margin:0;max-width:32em}
.cta-inner .btn{flex:0 0 auto}

/* 页脚 */
.site-footer{background:var(--c-ink);color:#F7F5F1;padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.footer-brand .brand{color:#F7F5F1;margin-bottom:0}
.footer-brand .brand:hover{color:#fff}
.footer-brand .brand-mark{background:rgba(255,255,255,.1)}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(247,245,241,.72);margin:16px 0 0;max-width:32em}
.footer-col h4{font-size:15px;font-weight:600;color:#F7F5F1;margin:0 0 18px}
.footer-col ul{display:grid;gap:12px;margin:0}
.footer-col a{font-size:14px;color:rgba(247,245,241,.72)}
.footer-col a:hover{color:var(--c-primary)}
.contact-line{display:block;font-size:14px;line-height:1.8;color:rgba(247,245,241,.72);margin-bottom:12px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:22px 0 28px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(247,245,241,.6)}
.footer-bottom a{color:rgba(247,245,241,.7)}
.footer-bottom a:hover{color:var(--c-primary)}

section[id]{scroll-margin-top:86px}

@media (max-width:1199px){
  .split{gap:40px}
  .faq-layout{gap:40px;grid-template-columns:0.8fr 1.2fr}
}
@media (max-width:991px){
  .container{padding:0 24px}
  .main-nav{display:none}
  .nav-toggle{display:grid}
  .nav-wrap{gap:16px}
  .nav-actions .btn{display:none}
  .section{padding:72px 0}
  .page-banner{min-height:250px;padding:48px 0}
  .page-banner h1{font-size:32px}
  .compact-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr);gap:32px 24px}
  .step:nth-child(3){border-left:0;padding-left:0}
  .split{grid-template-columns:1fr;gap:32px}
  .split-media{order:-1}
  .data-grid{grid-template-columns:repeat(2,1fr);row-gap:36px}
  .data-item:nth-child(3){border-left:0;padding-left:0}
  .data-num{font-size:36px}
  .faq-layout{grid-template-columns:1fr;gap:28px}
  .faq-side p{max-width:none}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:22px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .section-title{font-size:28px}
  .dark-head h2{font-size:26px}
  .cta-inner h2{font-size:25px}
}
@media (max-width:767px){
  body{font-size:16px}
  .container{padding:0 20px}
  .section{padding:56px 0}
  .page-banner h1{font-size:27px;line-height:1.3}
  .banner-lead{font-size:15.5px}
  .compact-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr;gap:0}
  .step{border-left:0;padding-left:0;border-top:1px solid var(--c-line);padding-top:22px;margin-top:22px}
  .step:first-child{border-top:0;padding-top:0;margin-top:0}
  .data-grid{grid-template-columns:1fr;row-gap:0}
  .data-item{border-left:0;padding:20px 0;border-top:1px solid rgba(255,255,255,.12)}
  .data-item:first-child{border-top:0;padding-top:0}
  .data-num{font-size:34px}
  .note-list{padding:4px 20px}
  .note-item{padding:20px 0 20px 18px}
  .faq-acc .accordion-button{font-size:16px;padding:20px 38px 20px 16px}
  .faq-acc .accordion-body{padding:0 30px 20px 16px}
  .cta-band{padding:44px 0}
  .cta-inner .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .brand-text{white-space:normal}
}

/* roulang page: category4 */
:root{
  --c-primary:#E8552A;
  --c-primary-d:#C7441D;
  --c-primary-soft:#FDEDE7;
  --c-ink:#1B1E22;
  --c-ink-2:#2A2F35;
  --c-accent:#14A08C;
  --c-bg:#F7F5F1;
  --c-surface:#FFFFFF;
  --c-line:#E5E0D8;
  --c-soft:#F1EEE9;
  --c-text:#1B1E22;
  --c-text-2:#4C5259;
  --c-text-3:#7A828B;
  --sh-1:0 1px 2px rgba(27,30,34,.05),0 8px 24px -12px rgba(27,30,34,.12);
  --sh-2:0 2px 4px rgba(27,30,34,.06),0 18px 40px -18px rgba(27,30,34,.22);
  --r-card:16px;
  --r-btn:10px;
  --r-pill:999px;
  --sp-section:96px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  background:var(--c-bg);
  color:var(--c-text);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .2s ease}
a:hover{color:var(--c-primary)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,h5{margin:0;letter-spacing:-.3px;font-weight:700}
p{margin:0}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:3px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:var(--r-btn);font-weight:600;font-size:15px;padding:13px 26px;cursor:pointer;line-height:1.2;transition:all .22s ease;text-align:center;white-space:nowrap}
.btn-primary{background:var(--c-primary);color:#fff;border-color:var(--c-primary);box-shadow:0 8px 18px -10px rgba(232,85,42,.8)}
.btn-primary:hover,.btn-primary:focus{background:var(--c-primary-d);border-color:var(--c-primary-d);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-1)}
.btn-ghost{background:transparent;color:var(--c-text);border-color:rgba(27,30,34,.32)}
.btn-ghost:hover,.btn-ghost:focus{background:var(--c-ink);border-color:var(--c-ink);color:#F7F5F1}
.btn-sm{padding:9px 18px;font-size:14px}
.btn-block{width:100%}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:1030;background:#fff;border-bottom:1px solid var(--c-line);transition:box-shadow .25s ease}
.site-header.is-scrolled{box-shadow:var(--sh-1)}
.header-inner{display:flex;align-items:center;gap:28px;height:64px}
.brand{display:flex;align-items:center;gap:10px;flex:none}
.brand-mark{width:34px;height:34px;border-radius:10px;background:var(--c-primary-soft);display:flex;align-items:center;justify-content:center;flex:none}
.brand-mark svg{width:20px;height:20px;fill:none;stroke:var(--c-primary);stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.brand-text{font-weight:800;font-size:16px;color:var(--c-text);letter-spacing:-.2px;line-height:1.2}
.main-nav{display:flex;align-items:center;gap:28px;margin:0}
.nav-link{font-size:15px;color:var(--c-text-2);padding:4px 0;position:relative;font-weight:500;white-space:nowrap}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;background:var(--c-primary);transform:scaleX(0);transform-origin:left;transition:transform .22s ease}
.nav-link:hover{color:var(--c-text)}
.nav-link:hover::after,.nav-link.active::after{transform:scaleX(1)}
.nav-link.active{color:var(--c-primary);font-weight:600}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.icon-btn{width:36px;height:36px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--c-line);border-radius:var(--r-btn);background:#fff;color:var(--c-text-2);cursor:pointer;transition:all .2s ease}
.icon-btn:hover{border-color:var(--c-primary);color:var(--c-primary);background:var(--c-primary-soft)}
.nav-toggle{display:none;width:38px;height:38px;align-items:center;justify-content:center;border:1px solid var(--c-line);border-radius:var(--r-btn);background:#fff;color:var(--c-text);cursor:pointer}
.nav-toggle:hover{border-color:var(--c-primary);color:var(--c-primary)}
.mobile-panel{max-height:0;overflow:hidden;background:#fff;border-top:1px solid var(--c-line);transition:max-height .32s ease}
.mobile-panel.is-open{max-height:520px}
.mobile-panel .container{padding-top:8px;padding-bottom:20px}
.m-link{display:flex;align-items:center;justify-content:space-between;height:52px;font-size:15px;color:var(--c-text-2);border-bottom:1px solid var(--c-line)}
.m-link:last-of-type{border-bottom:0}
.m-link.active{color:var(--c-primary);font-weight:600}
.m-link i{font-size:12px;color:var(--c-text-3)}
.m-cta{margin-top:14px}

/* ---------- 头图 ---------- */
.hero-banner{position:relative;background:url('/assets/images/backpic/back-2.webp') center/cover no-repeat;color:#F7F5F1;padding:62px 0 54px;isolation:isolate;overflow:hidden}
.hero-banner::before{content:"";position:absolute;inset:0;background:linear-gradient(102deg,rgba(27,30,34,.9) 8%,rgba(27,30,34,.62) 62%,rgba(27,30,34,.45) 100%);z-index:-1}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(247,245,241,.68);margin-bottom:20px}
.crumbs a{color:rgba(247,245,241,.68)}
.crumbs a:hover{color:var(--c-primary)}
.crumbs .sep{opacity:.5}
.crumbs .now{color:rgba(247,245,241,.92)}
.hero-banner h1{font-size:44px;line-height:1.24;font-weight:800;letter-spacing:-.6px;max-width:760px;color:#F7F5F1}
.hero-banner .lead{margin-top:16px;font-size:17px;color:rgba(247,245,241,.82);max-width:640px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.hero-tags span{display:inline-block;padding:6px 15px;border-radius:var(--r-pill);font-size:13px;font-weight:600;background:rgba(255,255,255,.12);color:#F7F5F1;border:1px solid rgba(255,255,255,.18)}

/* ---------- 锚点条 ---------- */
.anchor-bar{background:var(--c-surface);border-bottom:1px solid var(--c-line)}
.anchor-track{display:flex;gap:10px;padding:16px 0;overflow-x:auto;scrollbar-width:none}
.anchor-track::-webkit-scrollbar{display:none}
.chip{flex:none;padding:8px 18px;border-radius:var(--r-pill);border:1px solid var(--c-line);background:#fff;font-size:14px;color:var(--c-text-2);transition:all .2s ease;font-weight:500}
.chip:hover{border-color:var(--c-primary);color:var(--c-primary)}
.chip.is-on{background:var(--c-primary);border-color:var(--c-primary);color:#fff}

/* ---------- 板块 ---------- */
.section{padding:var(--sp-section) 0}
.section-alt{background:var(--c-soft)}
.sec-head{max-width:740px;margin-bottom:36px}
.sec-head h2{font-size:34px;font-weight:700;position:relative;padding-left:16px;line-height:1.32}
.sec-head h2::before{content:"";position:absolute;left:0;top:9px;width:4px;height:24px;background:var(--c-primary);border-radius:2px}
.sec-head p{margin-top:14px;font-size:16px;color:var(--c-text-2)}

/* ---------- 左右布局 ---------- */
.doc-layout{display:grid;grid-template-columns:320px minmax(0,1fr);gap:32px;align-items:start}
.side-card{position:sticky;top:88px;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-1);padding:26px}
.side-card .eyebrow{display:inline-block;font-size:12px;font-weight:600;letter-spacing:.4px;color:var(--c-accent);background:rgba(20,160,140,.1);padding:4px 12px;border-radius:var(--r-pill);margin-bottom:14px}
.side-card h3{font-size:21px;line-height:1.45;margin-bottom:12px}
.side-card p{font-size:14px;color:var(--c-text-2);line-height:1.8;margin-bottom:18px}
.check-list{margin-bottom:20px}
.check-list li{display:flex;gap:10px;font-size:14px;color:var(--c-text-2);padding:9px 0;border-top:1px dashed var(--c-line);line-height:1.6}
.check-list li i{color:var(--c-accent);font-size:11px;margin-top:8px;flex:none}
.check-list li:first-child{border-top:0}
.side-note{font-size:12px;color:var(--c-text-3);line-height:1.7;margin-top:14px;margin-bottom:0}

/* ---------- 卡片流 ---------- */
.card-flow{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.tile{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-1);padding:24px;display:flex;flex-direction:column;transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease}
.tile:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#D8D1C6}
.tile-icon{width:44px;height:44px;border-radius:12px;background:var(--c-primary-soft);color:var(--c-primary);display:flex;align-items:center;justify-content:center;font-size:18px;margin-bottom:16px}
.tile h3{font-size:19px;line-height:1.45;margin-bottom:10px;font-weight:600}
.tile p{font-size:14px;color:var(--c-text-2);line-height:1.8;margin-bottom:18px}
.tile-link{margin-top:auto;font-size:14px;font-weight:600;color:var(--c-primary);display:inline-flex;align-items:center;gap:6px}
.tile-link i{font-size:11px;transition:transform .2s ease}
.tile-link:hover i{transform:translateX(4px)}

/* ---------- 步骤 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-top:1px solid var(--c-line);margin-top:8px}
.step{padding:28px 24px 4px 0;border-right:1px solid var(--c-line);position:relative}
.step:last-child{border-right:0;padding-right:0}
.step .num{display:block;font-size:34px;font-weight:800;line-height:1;margin-bottom:16px;color:transparent;-webkit-text-stroke:1.4px var(--c-primary);letter-spacing:-1px;font-variant-numeric:tabular-nums}
.step h3{font-size:18px;margin-bottom:8px;font-weight:600}
.step p{font-size:14px;color:var(--c-text-2);line-height:1.75}

/* ---------- 深色数据带 ---------- */
.data-band{background:var(--c-ink);color:#F7F5F1;padding:64px 0}
.data-band .band-title{font-size:22px;font-weight:700;color:#F7F5F1;margin-bottom:8px}
.data-band .band-sub{font-size:14px;color:rgba(247,245,241,.68);margin-bottom:36px}
.data-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr))}
.data-item{padding:4px 26px;border-left:1px solid rgba(255,255,255,.12)}
.data-item:first-child{border-left:0;padding-left:0}
.data-num{font-size:42px;font-weight:800;line-height:1;color:var(--c-primary);font-variant-numeric:tabular-nums}
.data-num small{font-size:16px;font-weight:600;margin-left:6px;color:rgba(247,245,241,.76)}
.data-label{margin-top:12px;font-size:14px;color:rgba(247,245,241,.72);line-height:1.7}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,6fr);gap:48px;align-items:start}
.faq-side h2{font-size:32px;line-height:1.32;margin-bottom:14px}
.faq-side p{font-size:15px;color:var(--c-text-2);margin-bottom:22px}
.faq-acc .accordion-item{background:transparent;border:0;border-bottom:1px solid var(--c-line);border-radius:0}
.faq-acc .accordion-item:first-of-type{border-top:1px solid var(--c-line)}
.faq-acc .accordion-button{background:transparent;box-shadow:none;border:0;border-radius:0;padding:24px 44px 24px 18px;font-size:17px;font-weight:600;color:var(--c-text);line-height:1.55;position:relative;transition:color .2s ease}
.faq-acc .accordion-button::after{display:none}
.faq-acc .accordion-button::before{content:"";position:absolute;left:0;top:22px;bottom:22px;width:4px;border-radius:2px;background:var(--c-primary);transform:scaleY(0);transform-origin:top;transition:transform .22s ease}
.faq-acc .accordion-button:not(.collapsed){color:var(--c-primary-d);background:transparent;box-shadow:none}
.faq-acc .accordion-button:not(.collapsed)::before{transform:scaleY(1)}
.faq-acc .accordion-button:hover{color:var(--c-primary)}
.faq-acc .accordion-body{padding:0 44px 26px 18px;font-size:15px;line-height:1.9;color:var(--c-text-2)}
.plus{position:absolute;right:6px;top:50%;width:18px;height:18px;margin-top:-9px;display:block}
.plus::before,.plus::after{content:"";position:absolute;background:var(--c-primary);border-radius:2px;transition:transform .25s ease}
.plus::before{left:0;top:8px;width:18px;height:2px}
.plus::after{left:8px;top:0;width:2px;height:18px}
.accordion-button:not(.collapsed) .plus::after{transform:rotate(90deg)}

/* ---------- CTA ---------- */
.cta-band{background:var(--c-primary-soft);padding:56px 0}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-inner h2{font-size:30px;line-height:1.35;margin-bottom:10px}
.cta-inner p{font-size:15px;color:var(--c-text-2);max-width:560px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-ink);color:rgba(247,245,241,.72);padding:64px 0 26px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:40px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand .brand-mark{background:rgba(255,255,255,.08)}
.footer-brand .brand-mark svg{stroke:var(--c-primary)}
.footer-brand .brand-text{color:#F7F5F1}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(247,245,241,.68);max-width:340px}
.footer-col h4{font-size:15px;color:#F7F5F1;margin-bottom:16px;font-weight:600}
.footer-col ul li{margin-bottom:10px}
.footer-col ul li a{font-size:14px;color:rgba(247,245,241,.72)}
.footer-col ul li a:hover{color:var(--c-primary)}
.contact-line{display:block;font-size:14px;color:rgba(247,245,241,.68);line-height:1.75;margin-bottom:8px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:20px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(247,245,241,.56)}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .doc-layout{grid-template-columns:280px minmax(0,1fr);gap:24px}
  .hero-banner h1{font-size:38px}
  .sec-head h2{font-size:30px}
}
@media (max-width:991px){
  .main-nav{display:none}
  .nav-toggle{display:inline-flex}
  .header-inner{height:60px;gap:16px}
  .section{padding:72px 0}
  .doc-layout{grid-template-columns:1fr;gap:28px}
  .side-card{position:static}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .step{border-right:0;border-bottom:1px solid var(--c-line);padding:24px 20px 20px 0}
  .step:nth-child(2n){padding-right:0}
  .step:nth-last-child(-n+2){border-bottom:0}
  .data-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px 0}
  .data-item:nth-child(3){border-left:0;padding-left:0}
  .faq-layout{grid-template-columns:1fr;gap:28px}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
  .hero-banner h1{font-size:34px}
  .cta-inner h2{font-size:26px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .section{padding:56px 0}
  .hero-banner{padding:44px 0 40px}
  .hero-banner h1{font-size:30px;letter-spacing:-.3px}
  .hero-banner .lead{font-size:15px}
  .card-flow{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .step{border-bottom:1px solid var(--c-line);border-right:0;padding:22px 0}
  .step:last-child{border-bottom:0}
  .sec-head h2{font-size:24px}
  .sec-head p{font-size:15px}
  .data-band{padding:48px 0}
  .data-num{font-size:34px}
  .faq-side h2{font-size:24px}
  .faq-acc .accordion-button{font-size:16px;padding:20px 36px 20px 14px}
  .faq-acc .accordion-body{padding:0 36px 22px 14px}
  .cta-inner h2{font-size:23px}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:8px}
  .header-actions .btn-sm{display:none}
}
@media (max-width:520px){
  .brand-text{font-size:14px}
  .hero-tags span{font-size:12px;padding:5px 12px}
  .tile{padding:20px}
  .side-card{padding:20px}
}