/* roulang page: index */
:root{
  --primary:#1567C4;
  --primary-dark:#0F55A8;
  --primary-soft:#E8F1FB;
  --primary-line:rgba(21,103,196,.30);
  --secondary:#1F9E96;
  --secondary-soft:rgba(31,158,150,.10);
  --accent:#E08A3C;
  --ink:#0F2B46;
  --text:#2A3B4D;
  --muted:#5B6F82;
  --faint:#8FA0B0;
  --bg:#F6F9FC;
  --bg-alt:#EDF3F9;
  --surface:#FFFFFF;
  --border:#E2EAF2;
  --divider:#EDF2F7;
  --danger:#C6453C;
  --radius-card:14px;
  --radius-lg:20px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-1:0 1px 2px rgba(15,43,70,.05);
  --shadow-2:0 10px 28px rgba(15,43,70,.10);
  --shadow-3:0 20px 48px rgba(15,43,70,.16);
  --ease:cubic-bezier(.2,.7,.3,1);
  --nav-w:240px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16.5px;
  line-height:1.9;
  color:var(--text);
  background:var(--bg);
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:0;}
h1{font-size:clamp(30px,3.4vw,44px);line-height:1.25;}
h2{font-size:clamp(24px,2.4vw,32px);line-height:1.35;}
h3{font-size:20px;line-height:1.5;font-weight:600;}
p{margin:0 0 1.1em;p}
p:last-child{margin-bottom:0;}
a{color:var(--primary);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--primary-dark);}
img{max-width:100%;display:block;border-radius:var(--radius-img);}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
input,textarea,select{font-family:inherit;}
:focus-visible{outline:2px solid #7FB3E8;outline-offset:2px;}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--primary);color:#fff;padding:10px 16px;border-radius:0 0 10px 0;z-index:200;}
.skip-link:focus{left:0;color:#fff;}

/* ---------- 布局骨架 ---------- */
.side-nav{
  position:fixed;left:0;top:0;bottom:0;width:var(--nav-w);
  background:var(--surface);border-right:1px solid var(--border);
  display:flex;flex-direction:column;padding:26px 18px 20px;z-index:60;
}
.app-body{margin-left:var(--nav-w);min-height:100vh;display:flex;flex-direction:column;}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 40px;}

/* ---------- 品牌字标 ---------- */
.brand{display:flex;align-items:center;gap:10px;padding:6px 8px 20px;border-bottom:1px solid var(--divider);}
.brand-mark{
  width:40px;height:40px;border-radius:12px;flex:0 0 40px;
  background:var(--primary-soft);color:var(--primary);
  display:flex;align-items:center;justify-content:center;font-size:17px;
}
.brand-text{display:flex;flex-direction:column;line-height:1.3;}
.brand-text strong{font-size:15.5px;color:var(--ink);font-weight:700;}
.brand-text small{font-size:12px;color:var(--faint);letter-spacing:.02em;}

/* ---------- 侧栏导航 ---------- */
.side-menu{display:flex;flex-direction:column;gap:4px;margin-top:18px;flex:1 1 auto;}
.side-menu a{
  position:relative;display:flex;align-items:center;min-height:44px;
  padding:10px 12px 10px 16px;border-radius:8px;
  font-size:15px;font-weight:500;color:var(--muted);
  transition:background .2s var(--ease),color .2s var(--ease);
}
.side-menu a::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:0;border-radius:2px;background:var(--primary);
  transition:height .22s var(--ease);
}
.side-menu a:hover{background:#F2F7FC;color:var(--primary);}
.side-menu a.active{background:var(--primary-soft);color:var(--primary);font-weight:600;}
.side-menu a.active::before{height:20px;}
.side-foot{margin-top:18px;padding-top:18px;border-top:1px solid var(--divider);}
.side-foot p{font-size:12.5px;line-height:1.7;color:var(--faint);margin:10px 0 0;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  border:1px solid transparent;text-decoration:none;white-space:nowrap;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:var(--shadow-1);}
.btn-primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-primary:active{transform:translateY(0);box-shadow:var(--shadow-1);}
.btn-ghost{background:transparent;border-color:var(--primary);color:var(--primary);}
.btn-ghost:hover{background:rgba(21,103,196,.08);color:var(--primary-dark);border-color:var(--primary-dark);}
.btn-light{background:#fff;color:var(--primary);border-color:#fff;}
.btn-light:hover{background:#EAF2FB;color:var(--primary-dark);transform:translateY(-1px);}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.6);color:#fff;}
.btn-outline-light:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff;}
.btn-block{width:100%;}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none;}

.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--primary);}
.text-link i{font-size:12px;transition:transform .2s var(--ease);}
.text-link:hover{text-decoration:underline;}
.text-link:hover i{transform:translateX(3px);}

/* ---------- 顶部移动条 ---------- */
.mobile-bar{
  display:none;position:fixed;top:0;left:0;right:0;height:64px;
  background:var(--surface);border-bottom:1px solid var(--border);
  align-items:center;justify-content:space-between;padding:0 16px;z-index:90;
}
.mobile-bar .brand{padding:0;border:0;}
.menu-toggle{
  width:44px;height:44px;border-radius:10px;border:1px solid var(--border);
  background:#fff;color:var(--ink);font-size:18px;display:flex;align-items:center;justify-content:center;cursor:pointer;
}
.menu-toggle:hover{background:var(--primary-soft);color:var(--primary);border-color:var(--primary-line);}

/* ---------- 抽屉 ---------- */
.reveal.drawer{
  position:fixed!important;top:0!important;left:0!important;bottom:0!important;right:auto!important;
  width:300px;max-width:86vw;height:100vh!important;max-height:none;margin:0!important;
  border:0;border-radius:0;background:var(--surface);padding:20px 18px;overflow-y:auto;
  transform:translateX(-100%)!important;transition:transform .26s var(--ease);
  z-index:120;box-shadow:var(--shadow-3);
}
.reveal.drawer.is-open{transform:translateX(0)!important;}
.drawer .brand{margin-bottom:16px;}
.drawer-close{
  position:absolute;top:14px;right:14px;width:40px;height:40px;border-radius:10px;
  border:1px solid var(--border);background:#fff;color:var(--muted);cursor:pointer;font-size:16px;
}
.drawer-close:hover{color:var(--primary);border-color:var(--primary-line);}
.drawer-contact{margin-top:20px;padding-top:18px;border-top:1px solid var(--divider);font-size:13.5px;color:var(--muted);line-height:1.8;}

/* ---------- 区块通用 ---------- */
.section{padding:88px 0;}
.section-alt{background:var(--bg-alt);}
.section-head{max-width:760px;margin-bottom:44px;}
.eyebrow{
  display:block;font-size:13px;font-weight:600;letter-spacing:.08em;
  color:var(--primary);margin-bottom:12px;text-transform:uppercase;
}
.section-head h2{margin-bottom:12px;}
.section-head .lead{font-size:16px;color:var(--muted);line-height:1.85;margin:0;max-width:640px;}
.section-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;}

/* ---------- Hero ---------- */
.hero{padding:76px 0 0;}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center;}
.hero h1{margin-bottom:18px;}
.hero .hero-sub{font-size:17px;color:var(--muted);line-height:1.85;margin-bottom:26px;max-width:520px;}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:22px;}
.hero-note{display:flex;align-items:center;gap:10px;font-size:13.5px;color:var(--faint);}
.hero-note i{color:var(--secondary);}
.hero-visual{position:relative;}
.hero-visual .frame{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;
  aspect-ratio:16/10;background:var(--primary-soft);box-shadow:var(--shadow-2);
}
.hero-visual .frame img{width:100%;height:100%;object-fit:cover;border-radius:0;}
.hero-visual .curl{
  position:absolute;left:-24px;bottom:-24px;width:150px;height:150px;opacity:.08;
  border-radius:50%;background:var(--primary);pointer-events:none;
}
.stat-bar{
  margin-top:56px;background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius-lg);padding:28px 8px;box-shadow:var(--shadow-1);
  display:grid;grid-template-columns:repeat(4,1fr);
}
.stat-item{padding:0 26px;border-right:1px solid var(--divider);}
.stat-item:last-child{border-right:0;}
.stat-num{font-size:30px;font-weight:700;color:var(--ink);line-height:1.2;font-variant-numeric:tabular-nums;}
.stat-num span{font-size:16px;color:var(--primary);margin-left:3px;font-weight:600;}
.stat-label{font-size:13.5px;color:var(--muted);margin-top:6px;}

/* ---------- 功能卡 ---------- */
.grid-gutter{margin-left:-12px;margin-right:-12px;}
.grid-gutter > .cell{padding-left:12px;padding-right:12px;}
.feature-card{
  height:100%;background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius-card);padding:26px;box-shadow:var(--shadow-1);
  display:flex;flex-direction:column;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.feature-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--primary-line);}
.feature-icon{
  width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  font-size:16px;margin-bottom:16px;
}
.feature-icon.blue{background:var(--primary-soft);color:var(--primary);}
.feature-icon.teal{background:var(--secondary-soft);color:var(--secondary);}
.feature-card h3{font-size:18px;margin-bottom:10px;}
.feature-card p{font-size:15px;line-height:1.8;color:var(--muted);margin-bottom:18px;}
.feature-card .text-link{margin-top:auto;}

/* ---------- 场景图文 ---------- */
.scene-row{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;padding:36px 0;}
.scene-row + .scene-row{border-top:1px solid var(--divider);}
.scene-row.reverse .scene-media{order:2;}
.scene-media{border-radius:var(--radius-lg);overflow:hidden;aspect-ratio:4/3;background:var(--primary-soft);box-shadow:var(--shadow-1);}
.scene-media img{width:100%;height:100%;object-fit:cover;border-radius:0;}
.scene-body h3{margin:14px 0 16px;font-size:22px;}
.scene-list li{display:flex;gap:10px;align-items:flex-start;font-size:15.5px;color:var(--text);margin-bottom:12px;line-height:1.8;}
.scene-list li i{color:var(--secondary);font-size:14px;margin-top:6px;flex:0 0 auto;}
.scene-body .text-link{margin-top:8px;}

/* ---------- 标签 / 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;
  border-radius:999px;font-size:13px;font-weight:600;line-height:1;
  background:var(--primary-soft);color:var(--primary);white-space:nowrap;
}
.badge.teal{background:var(--secondary-soft);color:var(--secondary);}
.badge.sand{background:rgba(224,138,60,.12);color:#B96D26;}

/* ---------- 案例 ---------- */
.case-grid{display:grid;grid-template-columns:1.25fr 1fr;gap:24px;}
.case-side{display:grid;grid-template-rows:1fr 1fr;gap:24px;}
.case-card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-card);
  padding:28px;box-shadow:var(--shadow-1);display:flex;flex-direction:column;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.case-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--primary-line);}
.case-card.large{justify-content:space-between;min-height:320px;}
.case-text{font-size:15px;color:var(--muted);line-height:1.8;margin:14px 0 22px;}
.case-metric{display:flex;align-items:baseline;gap:8px;margin-bottom:16px;}
.case-metric strong{font-size:38px;line-height:1;color:var(--accent);font-weight:700;font-variant-numeric:tabular-nums;}
.case-metric span{font-size:14px;color:var(--muted);}
.case-quote{
  font-size:14px;color:var(--muted);line-height:1.8;padding-left:14px;
  border-left:3px solid var(--divider);
}
.case-card.large .case-metric strong{font-size:46px;}
.case-card.large h3{font-size:22px;}

/* ---------- 资讯卡 ---------- */
.news-card{
  height:100%;background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1);
  display:flex;flex-direction:column;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--primary-line);}
.news-media{display:block;aspect-ratio:16/9;background:var(--primary-soft);overflow:hidden;}
.news-media img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .3s var(--ease);}
.news-card:hover .news-media img{transform:scale(1.03);}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1 1 auto;}
.news-body .badge{align-self:flex-start;margin-bottom:12px;}
.news-title{
  font-size:17px;font-weight:600;color:var(--ink);line-height:1.55;margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-title a{color:var(--ink);}
.news-title a:hover{color:var(--primary);}
.news-desc{
  font-size:14.5px;color:var(--muted);line-height:1.8;margin-bottom:18px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-foot{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding-top:14px;border-top:1px solid var(--divider);font-size:13px;color:var(--faint);
}
.news-foot .text-link{font-size:13.5px;}
.empty-state{
  background:var(--surface);border:1px dashed var(--border);border-radius:var(--radius-card);
  padding:56px 24px;text-align:center;box-shadow:var(--shadow-1);
}
.empty-state i{font-size:30px;color:var(--faint);margin-bottom:16px;display:block;}
.empty-state strong{display:block;font-size:16px;color:var(--ink);margin-bottom:8px;}
.empty-state p{font-size:14px;color:var(--muted);margin:0;}

/* ---------- 价格卡 ---------- */
.plan-card{
  height:100%;background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius-card);padding:28px;box-shadow:var(--shadow-1);
  display:flex;flex-direction:column;position:relative;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.plan-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--primary-line);}
.plan-card.featured{border-color:var(--primary);box-shadow:0 12px 30px rgba(21,103,196,.14);}
.plan-flag{
  position:absolute;top:-13px;left:28px;height:26px;padding:0 12px;border-radius:999px;
  background:var(--primary);color:#fff;font-size:12.5px;font-weight:600;line-height:26px;
}
.plan-name{font-size:16px;font-weight:600;color:var(--ink);margin-bottom:6px;}
.plan-tagline{font-size:13.5px;color:var(--faint);margin-bottom:20px;}
.plan-price{display:flex;align-items:baseline;gap:8px;padding-bottom:20px;border-bottom:1px solid var(--divider);margin-bottom:20px;}
.plan-price strong{font-size:34px;line-height:1;color:var(--ink);font-weight:700;font-variant-numeric:tabular-nums;}
.plan-price span{font-size:13.5px;color:var(--muted);}
.plan-list{flex:1 1 auto;margin-bottom:24px;}
.plan-list li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:var(--text);line-height:1.75;margin-bottom:11px;}
.plan-list li i{color:var(--secondary);font-size:13px;margin-top:6px;flex:0 0 auto;}
.plan-note{margin-top:22px;font-size:13px;color:var(--faint);text-align:center;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:840px;margin:0 auto;}
.accordion{border:0;background:transparent;margin:0;}
.accordion .accordion-item{border:0;border-bottom:1px solid var(--divider);}
.accordion .accordion-item:first-child{border-top:1px solid var(--divider);}
.accordion .accordion-title{
  display:block;border:0;background:transparent;position:relative;
  padding:22px 48px 22px 0;font-size:16px;font-weight:600;color:var(--ink);line-height:1.6;
  transition:color .2s var(--ease),padding .2s var(--ease);
}
.accordion .accordion-title:hover,.accordion .accordion-title:focus{background:transparent;color:var(--primary);}
.accordion .accordion-title::before{
  content:"\f067";font-family:"Font Awesome 6 Free";font-weight:900;
  position:absolute;right:12px;top:50%;transform:translateY(-50%);
  font-size:13px;color:var(--primary);transition:transform .22s var(--ease);
}
.accordion .accordion-item.is-active > .accordion-title{padding-left:16px;color:var(--primary);}
.accordion .accordion-item.is-active > .accordion-title::after{
  content:"";position:absolute;left:0;top:24px;bottom:auto;width:3px;height:20px;
  background:var(--primary);border-radius:2px;
}
.accordion .accordion-item.is-active > .accordion-title::before{content:"\f068";}
.accordion .accordion-content{
  border:0;background:transparent;padding:0 48px 22px 16px;
  font-size:15px;line-height:1.8;color:var(--muted);
}

/* ---------- CTA 横幅 ---------- */
.cta-banner{
  background:var(--bg-alt);border-radius:var(--radius-lg);
  padding:48px 44px;display:flex;align-items:center;justify-content:space-between;gap:32px;
  border:1px solid var(--border);
}
.cta-banner h2{font-size:clamp(22px,2.2vw,28px);margin-bottom:10px;}
.cta-banner p{font-size:15px;color:var(--muted);margin:0;max-width:560px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;flex:0 0 auto;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.7);margin-top:0;}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;
  padding:64px 0 40px;
}
.footer-brand .brand{padding:0;border:0;}
.footer-brand .brand-mark{background:rgba(255,255,255,.1);color:#fff;}
.footer-brand .brand-text strong{color:#fff;}
.footer-brand .brand-text small{color:rgba(255,255,255,.55);}
.footer-brand p{margin:18px 0 0;font-size:13.5px;line-height:1.8;color:rgba(255,255,255,.6);max-width:320px;}
.footer-col h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px;letter-spacing:.02em;}
.footer-col li{margin-bottom:11px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.7);}
.footer-col a:hover{color:#fff;text-decoration:underline;}
.footer-sub{display:flex;gap:10px;margin-top:14px;}
.footer-sub input{
  flex:1 1 auto;height:44px;border-radius:var(--radius-btn);border:1px solid rgba(255,255,255,.2);
  background:rgba(255,255,255,.06);color:#fff;padding:0 14px;font-size:14px;min-width:0;
}
.footer-sub input::placeholder{color:rgba(255,255,255,.45);}
.footer-sub input:focus{outline:none;border-color:#7FB3E8;box-shadow:0 0 0 3px rgba(127,179,232,.18);}
.footer-sub .btn{height:44px;padding:0 18px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:22px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5);
}
.footer-bottom a{color:rgba(255,255,255,.5);}
.footer-bottom a:hover{color:#fff;}

/* ---------- 返回顶部 ---------- */
.back-top{
  position:fixed;right:26px;bottom:26px;width:46px;height:46px;border-radius:50%;
  background:#fff;border:1px solid var(--border);color:var(--primary);font-size:15px;
  display:flex;align-items:center;justify-content:center;cursor:pointer;z-index:80;
  box-shadow:var(--shadow-2);opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s;
}
.back-top.show{opacity:1;visibility:visible;transform:translateY(0);}
.back-top:hover{background:var(--primary-soft);}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1199px){
  :root{--nav-w:200px;}
  .wrap{padding:0 28px;}
  .hero-grid{gap:36px;}
  .stat-item{padding:0 18px;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px;}
}
@media screen and (max-width:991px){
  .side-nav{display:none;}
  .mobile-bar{display:flex;}
  .app-body{margin-left:0;padding-top:64px;}
  .wrap{padding:0 22px;}
  .section{padding:64px 0;}
  .hero{padding:48px 0 0;}
  .hero-grid{grid-template-columns:1fr;gap:32px;}
  .stat-bar{grid-template-columns:repeat(2,1fr);gap:22px 0;padding:24px 6px;}
  .stat-item{border-right:0;padding:0 20px;}
  .stat-item:nth-child(odd){border-right:1px solid var(--divider);}
  .scene-row{grid-template-columns:1fr;gap:26px;padding:30px 0;}
  .scene-row.reverse .scene-media{order:0;}
  .scene-media{order:-1;}
  .case-grid{grid-template-columns:1fr;}
  .case-side{grid-template-rows:auto auto;}
  .case-card.large{min-height:0;}
  .cta-banner{flex-direction:column;align-items:flex-start;padding:36px 28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:48px 0 32px;}
}
@media screen and (max-width:767px){
  body{font-size:16px;}
  .wrap{padding:0 18px;}
  .section{padding:48px 0;}
  .section-head{margin-bottom:30px;}
  .hero .hero-sub{font-size:16px;}
  .hero-actions{gap:12px;}
  .hero-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .back-top{right:16px;bottom:16px;}
  .news-body{padding:18px;}
}
@media screen and (max-width:519px){
  .stat-num{font-size:24px;}
  .stat-label{font-size:12.5px;}
  .feature-card,.plan-card,.case-card{padding:22px;}
  .accordion .accordion-title{font-size:15.5px;padding-right:38px;}
  .accordion .accordion-content{padding-right:8px;}
}

/* roulang page: article */
:root{
  --c-primary:#1567C4;
  --c-primary-hover:#0F55A8;
  --c-primary-soft:#E8F1FB;
  --c-primary-line:rgba(21,103,196,.30);
  --c-accent:#1F9E96;
  --c-accent-soft:rgba(31,158,150,.10);
  --c-warm:#E08A3C;
  --c-warm-soft:rgba(224,138,60,.12);
  --c-title:#0F2B46;
  --c-text:#2A3B4D;
  --c-muted:#5B6F82;
  --c-faint:#8FA0B0;
  --c-bg:#F6F9FC;
  --c-alt:#EDF3F9;
  --c-card:#FFFFFF;
  --c-border:#E2EAF2;
  --c-divider:#EDF2F7;
  --c-danger:#C6453C;
  --r-card:14px;
  --r-lg:20px;
  --r-btn:10px;
  --r-img:12px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(15,43,70,.05);
  --sh-2:0 10px 28px rgba(15,43,70,.10);
  --sh-3:0 20px 48px rgba(15,43,70,.16);
  --ease:cubic-bezier(.2,.7,.3,1);
  --sidebar-w:240px;
  --font-sans:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"PingFang SC",monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:var(--font-sans);
  font-size:16.5px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--c-primary);text-decoration:none;transition:color .2s var(--ease),background-color .2s var(--ease);}
a:hover{color:var(--c-primary-hover);}
button{font-family:inherit;}
h1,h2,h3,h4,h5{margin:0;color:var(--c-title);font-weight:700;line-height:1.35;}
p{margin:0 0 1.1em;}
ul,ol{margin:0 0 1.1em;padding-left:1.25em;}
li{margin-bottom:.45em;}
hr{border:0;border-top:1px solid var(--c-divider);margin:2em 0;}
:focus-visible{outline:2px solid #7FB3E8;outline-offset:2px;}
.skip-link{
  position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;
}
/* ---------- 骨架 ---------- */
.app{display:flex;align-items:flex-start;min-height:100vh;}
.sidebar{
  flex:0 0 var(--sidebar-w);
  width:var(--sidebar-w);
  position:sticky;top:0;
  height:100vh;
  display:flex;flex-direction:column;
  background:var(--c-card);
  border-right:1px solid var(--c-border);
  padding:26px 18px 20px;
  z-index:40;
}
.brand{display:flex;align-items:center;gap:10px;color:var(--c-title);}
.brand:hover{color:var(--c-primary);}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:12px;
  display:grid;place-items:center;
  background:var(--c-primary-soft);color:var(--c-primary);font-size:17px;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-text strong{font-size:15.5px;font-weight:700;letter-spacing:.01em;}
.brand-text small{font-size:11.5px;color:var(--c-faint);font-weight:500;}
.side-menu{display:flex;flex-direction:column;gap:4px;margin:26px 0 0;}
.side-menu a{
  position:relative;
  display:flex;align-items:center;
  min-height:44px;padding:10px 12px 10px 14px;
  border-radius:var(--r-btn);
  color:var(--c-muted);font-size:15px;font-weight:500;line-height:1.4;
}
.side-menu a::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%) scaleY(0);
  width:3px;height:20px;border-radius:2px;background:var(--c-primary);
  transition:transform .22s var(--ease);
}
.side-menu a:hover{color:var(--c-primary);background:rgba(21,103,196,.06);}
.side-menu a.active{color:var(--c-primary);background:var(--c-primary-soft);font-weight:600;}
.side-menu a.active::before{transform:translateY(-50%) scaleY(1);}
.side-foot{margin-top:auto;padding-top:20px;border-top:1px solid var(--c-divider);}
.side-foot .btn{width:100%;justify-content:center;}
.side-foot p{margin:12px 0 0;font-size:12.5px;line-height:1.7;color:var(--c-faint);}
.app-main{flex:1 1 auto;min-width:0;}
.wrap{max-width:1240px;margin:0 auto;padding:0 40px;}
/* ---------- 顶部条 / 抽屉（移动） ---------- */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:60px;z-index:60;
  background:rgba(255,255,255,.96);backdrop-filter:blur(6px);
  border-bottom:1px solid var(--c-border);
  align-items:center;justify-content:space-between;padding:0 16px;
}
.topbar .brand-text strong{font-size:15px;}
.topbar-toggle{
  width:44px;height:44px;border-radius:var(--r-btn);
  border:1px solid var(--c-border);background:#fff;color:var(--c-title);
  font-size:17px;display:grid;place-items:center;cursor:pointer;
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.topbar-toggle:hover{border-color:var(--c-primary-line);color:var(--c-primary);}
.drawer-mask{
  display:none;position:fixed;inset:0;background:rgba(15,43,70,.42);z-index:70;
  opacity:0;transition:opacity .24s var(--ease);
}
.drawer-mask.show{display:block;opacity:1;}
/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  border:1px solid transparent;background:transparent;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background-color .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--c-primary-hover);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{border-color:var(--c-primary);color:var(--c-primary);background:#fff;}
.btn-ghost:hover{background:rgba(21,103,196,.08);color:var(--c-primary-hover);transform:translateY(-1px);}
.btn:disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none;}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14.5px;font-weight:600;color:var(--c-primary);
}
.text-link i{font-size:12px;transition:transform .2s var(--ease);}
.text-link:hover{text-decoration:underline;}
.text-link:hover i{transform:translateX(2px);}
/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--r-pill);
  font-size:13px;font-weight:600;line-height:1.6;
}
.badge-primary{background:var(--c-primary-soft);color:var(--c-primary);}
.badge-accent{background:var(--c-accent-soft);color:var(--c-accent);}
.badge-warm{background:var(--c-warm-soft);color:var(--c-warm);}
/* ---------- 页面头 & 面包屑 ---------- */
.page-head{padding:36px 0 8px;}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13.5px;color:var(--c-faint);margin-bottom:14px;
}
.breadcrumb a{color:var(--c-muted);}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb span.sep{color:#C6D2DD;}
.breadcrumb .current{color:var(--c-faint);max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.section-label{
  display:block;font-size:13px;font-weight:600;letter-spacing:.08em;
  color:var(--c-primary);margin-bottom:10px;
}
/* ---------- 文章布局 ---------- */
.article-layout{
  display:flex;align-items:flex-start;gap:40px;
  padding:12px 0 64px;
}
.article-main{flex:1 1 auto;min-width:0;max-width:820px;}
.article-aside{flex:0 0 280px;width:280px;position:sticky;top:24px;}
.article-card{
  background:var(--c-card);border:1px solid var(--c-border);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);padding:32px 36px;
}
.article-head{border-bottom:1px solid var(--c-divider);padding-bottom:22px;margin-bottom:28px;}
.article-head h1{
  font-size:clamp(26px,2.6vw,36px);line-height:1.32;margin:14px 0 16px;font-weight:700;
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  font-size:13px;color:var(--c-faint);
}
.meta-row .dot{width:3px;height:3px;border-radius:50%;background:#CBD7E1;}
.meta-row em{font-style:normal;color:var(--c-muted);font-weight:600;}
/* ---------- 正文排版 ---------- */
.article-body{font-size:17px;line-height:1.95;color:var(--c-text);}
.article-body h2{
  position:relative;font-size:23px;line-height:1.45;font-weight:700;
  margin:40px 0 16px;padding-left:14px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.28em;
  width:3px;height:1.05em;border-radius:2px;background:var(--c-primary);
}
.article-body h3{font-size:19px;line-height:1.5;font-weight:600;margin:28px 0 12px;}
.article-body h4{font-size:17px;font-weight:600;margin:22px 0 10px;color:var(--c-title);}
.article-body p{margin:0 0 1.1em;}
.article-body ul,.article-body ol{padding-left:1.4em;margin:0 0 1.3em;}
.article-body li{margin-bottom:.5em;}
.article-body strong{color:var(--c-title);font-weight:600;}
.article-body blockquote{
  margin:24px 0;padding:16px 22px;border-left:3px solid var(--c-primary);
  background:var(--c-primary-soft);border-radius:0 var(--r-img) var(--r-img) 0;
  color:var(--c-title);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:var(--r-img);margin:24px auto;box-shadow:var(--sh-1);}
.article-body figure{margin:24px 0;}
.article-body figcaption{
  text-align:center;font-size:13px;color:var(--c-faint);margin-top:10px;
}
.article-body table{
  width:100%;border-collapse:collapse;margin:24px 0;font-size:15.5px;
  border:1px solid var(--c-border);border-radius:var(--r-img);overflow:hidden;
}
.article-body thead th{
  background:var(--c-alt);color:var(--c-title);font-weight:600;
  text-align:left;padding:12px 16px;border-bottom:1px solid var(--c-border);
}
.article-body tbody td{padding:12px 16px;border-bottom:1px solid var(--c-divider);}
.article-body tbody tr:nth-child(even){background:#FAFCFE;}
.article-body tbody tr:last-child td{border-bottom:0;}
.article-body pre{
  background:var(--c-alt);border:1px solid var(--c-border);border-radius:var(--r-img);
  padding:16px 18px;overflow-x:auto;font-family:var(--font-mono);
  font-size:14px;line-height:1.8;color:var(--c-title);
}
.article-body code{
  font-family:var(--font-mono);font-size:.92em;
  background:var(--c-alt);border-radius:6px;padding:2px 6px;color:#12508F;
}
.article-body pre code{background:none;padding:0;}
.article-body a{color:var(--c-primary);border-bottom:1px solid var(--c-primary-line);}
.article-body a:hover{border-bottom-color:var(--c-primary);}
/* ---------- 空态 ---------- */
.empty-state{
  text-align:center;padding:64px 24px;color:var(--c-muted);
}
.empty-state .icon{
  width:64px;height:64px;margin:0 auto 18px;border-radius:50%;
  display:grid;place-items:center;background:var(--c-primary-soft);
  color:var(--c-primary);font-size:24px;
}
.empty-state h3{font-size:19px;margin-bottom:8px;}
.empty-state p{font-size:15px;color:var(--c-faint);margin-bottom:20px;}
/* ---------- 侧栏 ---------- */
.aside-card{
  background:var(--c-card);border:1px solid var(--c-border);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:20px 22px;margin-bottom:20px;
}
.aside-title{
  font-size:14px;font-weight:700;color:var(--c-title);letter-spacing:.02em;
  margin:0 0 14px;display:flex;align-items:center;gap:8px;
}
.aside-title::before{
  content:"";width:3px;height:14px;border-radius:2px;background:var(--c-primary);
}
.toc-list{list-style:none;margin:0;padding:0;max-height:60vh;overflow:auto;}
.toc-list li{margin:0;}
.toc-list a{
  display:block;padding:8px 10px;border-radius:8px;font-size:14px;
  color:var(--c-muted);line-height:1.6;
}
.toc-list a:hover{color:var(--c-primary);background:rgba(21,103,196,.06);}
.toc-list a.active{color:var(--c-primary);background:var(--c-primary-soft);font-weight:600;}
.toc-empty{font-size:14px;color:var(--c-faint);margin:0;}
.link-list{list-style:none;margin:0;padding:0;}
.link-list li{margin:0;}
.link-list a{
  display:flex;align-items:center;justify-content:space-between;gap:8px;
  padding:10px 0;border-bottom:1px solid var(--c-divider);
  font-size:14.5px;color:var(--c-muted);
}
.link-list li:last-child a{border-bottom:0;}
.link-list a i{font-size:11px;color:#C6D2DD;transition:transform .2s var(--ease);}
.link-list a:hover{color:var(--c-primary);}
.link-list a:hover i{transform:translateX(2px);color:var(--c-primary);}
/* ---------- 文末 ---------- */
.article-tags{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin:36px 0 0;padding-top:24px;border-top:1px solid var(--c-divider);
}
.article-tags .label{font-size:13px;color:var(--c-faint);}
.tag{
  display:inline-flex;align-items:center;padding:5px 14px;border-radius:var(--r-pill);
  background:var(--c-alt);color:var(--c-muted);font-size:13px;font-weight:500;
  transition:background-color .2s var(--ease),color .2s var(--ease);
}
.tag:hover{background:var(--c-primary-soft);color:var(--c-primary);}
.pager{
  display:grid;grid-template-columns:1fr 1fr;gap:20px;margin:28px 0 0;
}
.pager-item{
  display:block;background:var(--c-card);border:1px solid var(--c-border);
  border-radius:var(--r-card);padding:18px 20px;box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.pager-item:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--c-primary-line);}
.pager-item small{display:block;font-size:12.5px;color:var(--c-faint);margin-bottom:6px;}
.pager-item strong{display:block;font-size:15.5px;font-weight:600;color:var(--c-title);line-height:1.55;}
.pager-item:hover strong{color:var(--c-primary);}
.related{margin-top:44px;}
.related-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:20px;}
.related-head h2{font-size:clamp(20px,2vw,24px);}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.info-card{
  display:flex;flex-direction:column;background:var(--c-card);
  border:1px solid var(--c-border);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.info-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--c-primary-line);}
.info-card .thumb{position:relative;aspect-ratio:16/9;background:var(--c-alt);overflow:hidden;}
.info-card .thumb img{width:100%;height:100%;object-fit:cover;}
.info-card .body{padding:16px 18px 18px;display:flex;flex-direction:column;flex:1 1 auto;}
.info-card h3{font-size:16px;font-weight:600;line-height:1.55;margin:10px 0 8px;color:var(--c-title);}
.info-card p{font-size:14px;line-height:1.8;color:var(--c-muted);margin:0 0 14px;}
.info-card .foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--c-faint);}
.back-row{margin-top:28px;}
/* ---------- CTA 横幅 ---------- */
.cta-band{
  background:linear-gradient(180deg,#EDF3F9 0%,#F6F9FC 100%);
  border:1px solid var(--c-border);border-radius:var(--r-lg);
  padding:34px 38px;margin:8px 0 64px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(20px,2.1vw,26px);margin-bottom:8px;}
.cta-band p{margin:0;font-size:15px;color:var(--c-muted);max-width:640px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}
/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-title);color:rgba(255,255,255,.78);padding:56px 0 26px;margin-top:auto;}
.site-footer .brand{color:#fff;}
.site-footer .brand:hover{color:#fff;}
.site-footer .brand-mark{background:rgba(255,255,255,.12);color:#fff;}
.site-footer .brand-text small{color:rgba(255,255,255,.55);}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:36px;}
.footer-brand p{font-size:13.5px;line-height:1.8;color:rgba(255,255,255,.6);margin:16px 0 0;max-width:320px;}
.footer-col h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:14px;letter-spacing:.02em;}
.footer-col ul{list-style:none;margin:0;padding:0;}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.7);}
.footer-col a:hover{color:#fff;text-decoration:underline;}
.footer-sub{display:flex;gap:10px;margin-top:14px;}
.footer-sub input{
  flex:1 1 auto;min-width:0;height:44px;border-radius:var(--r-btn);
  border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.08);
  color:#fff;padding:0 14px;font-size:14px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.footer-sub input::placeholder{color:rgba(255,255,255,.45);}
.footer-sub input:focus{outline:none;border-color:#7FB3E8;box-shadow:0 0 0 3px rgba(127,179,232,.22);}
.footer-sub .btn{flex:0 0 auto;padding:0 16px;}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5);
}
/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;right:26px;bottom:26px;width:46px;height:46px;border-radius:50%;
  border:1px solid var(--c-border);background:#fff;color:var(--c-primary);
  box-shadow:var(--sh-2);display:grid;place-items:center;cursor:pointer;
  opacity:0;visibility:hidden;transform:translateY(8px);z-index:50;
  transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s;
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:var(--c-primary);color:#fff;border-color:var(--c-primary);}
/* ---------- 断点 ---------- */
@media (max-width:1199px){
  :root{--sidebar-w:200px;}
  .wrap{padding:0 28px;}
  .article-layout{gap:28px;}
  .article-aside{flex-basis:260px;width:260px;}
}
@media (max-width:991px){
  .sidebar{
    position:fixed;top:0;left:0;bottom:0;height:100%;width:280px;flex-basis:280px;
    transform:translateX(-102%);transition:transform .26s var(--ease);
    box-shadow:var(--sh-3);z-index:80;
  }
  body.drawer-open .sidebar{transform:translateX(0);}
  body.drawer-open{overflow:hidden;}
  .topbar{display:flex;}
  .app-main{padding-top:60px;}
  .article-layout{flex-direction:column;gap:0;}
  .article-aside{position:static;width:100%;flex:0 0 auto;margin-top:32px;}
  .toc-list{max-height:none;}
  .related-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .wrap{padding:0 18px;}
  .page-head{padding:24px 0 4px;}
  .article-layout{padding:8px 0 44px;}
  .article-card{padding:22px 18px;border-radius:var(--r-card);}
  .article-head h1{font-size:24px;}
  .article-body{font-size:16.5px;line-height:1.9;}
  .article-body h2{font-size:20px;margin:32px 0 14px;}
  .article-body h3{font-size:17.5px;}
  .pager{grid-template-columns:1fr;}
  .related-grid{grid-template-columns:1fr;}
  .cta-band{padding:24px 20px;margin-bottom:44px;flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
  .footer-grid{grid-template-columns:1fr;gap:24px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .to-top{right:16px;bottom:16px;}
  .breadcrumb .current{max-width:200px;}
}

/* roulang page: category1 */
:root{
  --brand:#1567C4;
  --brand-hover:#0F55A8;
  --brand-soft:#E8F1FB;
  --brand-line:rgba(21,103,196,.30);
  --accent:#1F9E96;
  --accent-soft:rgba(31,158,150,.10);
  --warm:#E08A3C;
  --ink:#0F2B46;
  --text:#2A3B4D;
  --muted:#5B6F82;
  --weak:#8FA0B0;
  --bg:#F6F9FC;
  --bg-alt:#EDF3F9;
  --card:#FFFFFF;
  --line:#E2EAF2;
  --divider:#EDF2F7;
  --footer-bg:#0F2B46;
  --r-card:14px;
  --r-lg:20px;
  --r-btn:10px;
  --r-img:12px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(15,43,70,.05);
  --sh-2:0 10px 28px rgba(15,43,70,.10);
  --sh-3:0 20px 48px rgba(15,43,70,.16);
  --ease:cubic-bezier(.2,.7,.3,1);
  --sidebar:240px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16.5px;
  line-height:1.9;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;border-radius:var(--r-img);}
a{color:var(--brand);text-decoration:none;transition:color .2s var(--ease),background-color .2s var(--ease);}
a:hover{color:var(--brand-hover);}
p{margin:0 0 1.1em;text-align:left;}
h1,h2,h3,h4{color:var(--ink);font-family:inherit;margin:0;font-weight:700;letter-spacing:.01em;}
h1{font-size:clamp(30px,3.4vw,44px);line-height:1.25;}
h2{font-size:clamp(24px,2.4vw,32px);line-height:1.35;}
h3{font-size:20px;line-height:1.5;font-weight:600;}
h4{font-size:16px;line-height:1.6;font-weight:600;}
ul,ol{margin:0;padding:0;list-style:none;}
button,input{font-family:inherit;font-size:inherit;}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid #7FB3E8;outline-offset:2px;border-radius:6px;}
.skip-link{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;}

/* ============ 布局骨架 ============ */
.layout{display:flex;min-height:100vh;}
.wrap{max-width:1200px;width:100%;margin:0 auto;padding:0 40px;}
.main{margin-left:var(--sidebar);flex:1 1 auto;min-width:0;}

/* ============ 左侧竖向导航 ============ */
.sidebar{
  position:fixed;top:0;left:0;width:var(--sidebar);height:100vh;
  background:var(--card);border-right:1px solid var(--line);
  display:flex;flex-direction:column;padding:26px 18px 22px;z-index:50;
}
.brand{display:flex;align-items:center;gap:11px;padding:4px 8px 18px;color:var(--ink);}
.brand:hover{color:var(--ink);}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:12px;
  background:var(--brand-soft);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-size:17px;
}
.brand-text{display:flex;flex-direction:column;line-height:1.3;min-width:0;}
.brand-text strong{font-size:15.5px;font-weight:700;color:var(--ink);letter-spacing:.01em;}
.brand-text small{font-size:11.5px;color:var(--weak);letter-spacing:.02em;}
.side-menu{display:flex;flex-direction:column;gap:4px;margin-top:6px;}
.side-menu a{
  display:flex;align-items:center;min-height:44px;padding:0 12px 0 14px;
  border-radius:10px;font-size:15px;font-weight:500;color:var(--muted);
  position:relative;
}
.side-menu a::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%) scaleY(0);
  width:3px;height:20px;border-radius:2px;background:var(--brand);
  transition:transform .22s var(--ease);
}
.side-menu a:hover{background:rgba(21,103,196,.06);color:var(--brand);}
.side-menu a.active{background:var(--brand-soft);color:var(--brand);font-weight:600;}
.side-menu a.active::before{transform:translateY(-50%) scaleY(1);}
.side-foot{margin-top:auto;padding-top:18px;border-top:1px solid var(--divider);}
.side-foot p{font-size:12.5px;line-height:1.75;color:var(--weak);margin:12px 2px 0;}

/* ============ 移动端顶部条与抽屉 ============ */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:64px;z-index:60;
  background:rgba(255,255,255,.96);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
  align-items:center;justify-content:space-between;padding:0 16px;
}
.topbar .brand{padding:0;gap:9px;}
.nav-toggle{
  width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:10px;
  color:var(--ink);display:flex;align-items:center;justify-content:center;font-size:17px;cursor:pointer;
  transition:background-color .2s var(--ease),border-color .2s var(--ease);
}
.nav-toggle:hover{background:var(--brand-soft);border-color:var(--brand-line);color:var(--brand);}
.drawer{
  position:fixed;top:0;left:0;width:290px;max-width:86vw;height:100vh;z-index:80;
  background:#fff;box-shadow:var(--sh-3);padding:22px 18px;
  transform:translateX(-102%);transition:transform .26s var(--ease);
  display:flex;flex-direction:column;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-mask{
  position:fixed;inset:0;background:rgba(15,43,70,.42);z-index:70;
  opacity:0;visibility:hidden;transition:opacity .26s var(--ease),visibility .26s;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px;}
.drawer-close{width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:10px;color:var(--muted);cursor:pointer;}
.drawer .side-menu a{min-height:46px;}
.drawer-contact{margin-top:22px;padding-top:18px;border-top:1px solid var(--divider);}
.drawer-contact h4{font-size:14px;margin-bottom:8px;}
.drawer-contact p{font-size:13px;color:var(--muted);line-height:1.8;}

/* ============ 面包屑 ============ */
.crumbs-bar{background:var(--bg);padding:26px 0 0;}
.crumbs{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--weak);flex-wrap:wrap;}
.crumbs a{color:var(--muted);}
.crumbs a:hover{color:var(--brand);}
.crumbs .current{color:var(--ink);font-weight:600;}

/* ============ Hero（窄幅） ============ */
.page-hero{padding:26px 0 64px;background:var(--bg);}
.page-hero h1{margin:12px 0 14px;}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:600;letter-spacing:.08em;
  color:var(--brand);text-transform:uppercase;
}
.hero-lead{font-size:17px;line-height:1.85;color:var(--muted);max-width:520px;margin:0 0 26px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}
.hero-media{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  aspect-ratio:16/10;background:linear-gradient(140deg,var(--brand-soft),var(--bg-alt));
  box-shadow:var(--sh-1);
}
.hero-media img{width:100%;height:100%;object-fit:cover;border-radius:0;}
.hero-media::after{
  content:"";position:absolute;left:-10%;bottom:-30%;width:60%;height:70%;
  background:radial-gradient(circle at 30% 70%,rgba(31,158,150,.10),transparent 70%);
  pointer-events:none;
}
.stat-row{
  display:flex;flex-wrap:wrap;margin-top:44px;padding-top:26px;border-top:1px solid var(--line);
}
.stat-row li{
  flex:1 1 0;min-width:150px;padding:0 22px;border-left:1px solid var(--line);
}
.stat-row li:first-child{border-left:0;padding-left:0;}
.stat-row b{display:block;font-size:26px;font-weight:700;color:var(--ink);line-height:1.3;font-variant-numeric:tabular-nums;}
.stat-row span{font-size:13.5px;color:var(--muted);}

/* ============ 区块通用 ============ */
.section{padding:80px 0;}
.section.alt{background:var(--bg-alt);}
.sec-head{max-width:720px;margin-bottom:38px;}
.sec-head h2{margin:10px 0 12px;}
.sec-lead{font-size:16px;color:var(--muted);margin:0;}
.sec-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:38px;}
.sec-row .sec-head{margin-bottom:0;}

/* ============ 按钮与文字链 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  border:1px solid transparent;
  transition:background-color .22s var(--ease),color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.btn i{font-size:13px;}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--brand-hover);color:#fff;transform:translateY(-1px);box-shadow:0 10px 26px rgba(21,103,196,.28);}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-1);}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--brand-line);}
.btn-ghost:hover{background:rgba(21,103,196,.08);color:var(--brand-hover);border-color:var(--brand);transform:translateY(-1px);}
.btn-block{width:100%;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand);}
.link-arrow i{font-size:12px;transition:transform .2s var(--ease);}
.link-arrow:hover{color:var(--brand-hover);text-decoration:underline;text-underline-offset:4px;}
.link-arrow:hover i{transform:translateX(2px);}

/* ============ 概览图文与对照块 ============ */
.panel-figure{
  position:relative;border-radius:var(--r-lg);overflow:hidden;margin-bottom:32px;
  aspect-ratio:21/9;background:linear-gradient(120deg,var(--bg-alt),var(--brand-soft));
}
.panel-figure img{width:100%;height:100%;object-fit:cover;border-radius:0;}
.compare-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.compare-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--sh-1);
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease),transform .22s var(--ease);
}
.compare-card:hover{border-color:var(--brand-line);box-shadow:var(--sh-2);transform:translateY(-2px);}
.compare-card h3{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.compare-card h3 i{color:var(--brand);font-size:16px;}
.compare-card p{font-size:15px;line-height:1.85;color:var(--muted);margin:0 0 14px;}
.plain-list li{
  position:relative;padding-left:20px;font-size:15px;line-height:1.85;color:var(--text);
  margin-bottom:10px;
}
.plain-list li::before{
  content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;background:var(--accent);
}
.plain-list li:last-child{margin-bottom:0;}

/* ============ 要点卡 2×2 ============ */
.point-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.point-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease),transform .22s var(--ease);
}
.point-card:hover{border-color:var(--brand-line);box-shadow:var(--sh-2);transform:translateY(-2px);}
.point-icon{
  width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  font-size:16px;margin-bottom:16px;background:var(--brand-soft);color:var(--brand);
}
.point-card:nth-child(2n) .point-icon{background:var(--accent-soft);color:var(--accent);}
.point-card h3{font-size:18px;margin-bottom:10px;}
.point-card p{font-size:15px;line-height:1.85;color:var(--muted);margin:0 0 16px;}
.point-card .link-arrow{margin-top:auto;}

/* ============ 标签组与徽章 ============ */
.tag-row{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:34px;}
.tag{
  display:inline-flex;align-items:center;gap:8px;min-height:38px;padding:0 16px;
  border-radius:var(--r-pill);background:rgba(21,103,196,.08);color:var(--brand);
  font-size:14px;font-weight:600;border:1px solid transparent;
  transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.tag:hover{background:var(--brand);color:#fff;border-color:var(--brand);transform:translateY(-1px);}
.tag.variant{background:var(--accent-soft);color:var(--accent);}
.tag.variant:hover{background:var(--accent);color:#fff;border-color:var(--accent);}
.count-badge{
  font-style:normal;font-size:12.5px;font-weight:700;line-height:1;padding:4px 8px;border-radius:var(--r-pill);
  background:#fff;color:var(--brand);font-variant-numeric:tabular-nums;
}
.tag.variant .count-badge{color:var(--accent);}

/* ============ 入口列表（线为主） ============ */
.entry-list{border-top:1px solid var(--line);}
.entry-item{
  display:flex;align-items:center;gap:22px;padding:22px 4px;border-bottom:1px solid var(--line);
  transition:background-color .2s var(--ease);
}
.entry-item:hover{background:#fff;}
.entry-no{
  flex:0 0 40px;width:40px;height:40px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--brand);color:#fff;font-size:14px;font-weight:700;
  font-variant-numeric:tabular-nums;
}
.entry-item:nth-child(2n) .entry-no{background:var(--accent);}
.entry-body{flex:1 1 auto;min-width:0;}
.entry-body h3{font-size:17px;margin-bottom:4px;}
.entry-body p{font-size:14.5px;line-height:1.8;color:var(--muted);margin:0;}
.entry-item .link-arrow{flex:0 0 auto;}

/* ============ CTA 横幅 ============ */
.cta-band{background:var(--bg-alt);padding:56px 0;}
.cta-inner{
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:36px 40px;box-shadow:var(--sh-1);
}
.cta-inner h2{font-size:24px;margin-bottom:8px;}
.cta-inner p{margin:0;font-size:15px;color:var(--muted);}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;flex:0 0 auto;}

/* ============ 页脚 ============ */
.site-footer{background:var(--footer-bg);color:rgba(255,255,255,.78);padding:64px 0 28px;}
.site-footer .brand{color:#fff;padding:0 0 16px;}
.site-footer .brand:hover{color:#fff;}
.site-footer .brand-mark{background:rgba(255,255,255,.10);color:#fff;}
.site-footer .brand-text strong{color:#fff;}
.site-footer .brand-text small{color:rgba(255,255,255,.55);}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;}
.footer-brand p{font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.62);max-width:320px;margin:0;}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:14px;}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul a{color:rgba(255,255,255,.7);font-size:14px;}
.footer-col ul a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px;}
.footer-sub{display:flex;gap:10px;margin-top:14px;}
.footer-sub input{
  flex:1 1 auto;min-width:0;height:44px;border-radius:var(--r-btn);border:1px solid rgba(255,255,255,.22);
  background:rgba(255,255,255,.08);color:#fff;padding:0 14px;font-size:14px;
}
.footer-sub input::placeholder{color:rgba(255,255,255,.45);}
.footer-sub input:focus{outline:none;border-color:#7FB3E8;box-shadow:0 0 0 3px rgba(127,179,232,.22);background:rgba(255,255,255,.12);}
.footer-sub .btn-primary{flex:0 0 auto;padding:0 18px;}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.55);
}

/* ============ 返回顶部 ============ */
.to-top{
  position:fixed;right:24px;bottom:28px;width:44px;height:44px;border-radius:50%;
  border:1px solid var(--brand-line);background:#fff;color:var(--brand);
  display:flex;align-items:center;justify-content:center;cursor:pointer;
  box-shadow:var(--sh-2);opacity:0;visibility:hidden;
  transition:opacity .22s var(--ease),visibility .22s,transform .22s var(--ease);
  z-index:55;
}
.to-top.is-visible{opacity:1;visibility:visible;}
.to-top:hover{transform:translateY(-2px);background:var(--brand-soft);}

/* ============ 响应式 ============ */
@media screen and (max-width:1199px){
  :root{--sidebar:200px;}
  .wrap{padding:0 28px;}
  .section{padding:64px 0;}
  .stat-row li{padding:0 16px;}
}
@media screen and (max-width:991px){
  .sidebar{display:none;}
  .topbar{display:flex;}
  .main{margin-left:0;padding-top:64px;}
  .section{padding:56px 0;}
  .page-hero{padding:18px 0 52px;}
  .compare-grid{grid-template-columns:1fr;}
  .point-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:30px 28px;}
  .entry-item{flex-wrap:wrap;gap:14px;}
  .entry-item .link-arrow{width:100%;}
}
@media screen and (max-width:767px){
  body{font-size:16px;}
  .wrap{padding:0 18px;}
  .crumbs-bar{padding:18px 0 0;}
  .hero-media{aspect-ratio:16/10;margin-top:8px;}
  .stat-row{margin-top:32px;padding-top:20px;gap:18px 0;}
  .stat-row li{flex:0 0 50%;max-width:50%;padding:0 14px;}
  .stat-row li:nth-child(odd){border-left:0;padding-left:0;}
  .stat-row li:nth-child(3),.stat-row li:nth-child(4){margin-top:8px;}
  .stat-row b{font-size:22px;}
  .panel-figure{aspect-ratio:16/9;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-sub{flex-direction:column;}
  .footer-sub .btn-primary{width:100%;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .to-top{right:16px;bottom:18px;}
  .compare-card,.point-card{padding:22px;}
  .section{padding:48px 0;}
}

/* roulang page: category2 */
:root{
  --primary:#1567C4;
  --primary-hover:#0F55A8;
  --primary-soft:#E8F1FB;
  --primary-12:rgba(21,103,196,.12);
  --primary-30:rgba(21,103,196,.30);
  --teal:#1F9E96;
  --teal-soft:rgba(31,158,150,.10);
  --warm:#E08A3C;
  --ink:#0F2B46;
  --text:#2A3B4D;
  --muted:#5B6F82;
  --weak:#8FA0B0;
  --bg:#F6F9FC;
  --alt:#EDF3F9;
  --card:#FFFFFF;
  --border:#E2EAF2;
  --line:#EDF2F7;
  --danger:#C6453C;
  --r-sm:10px;
  --r:14px;
  --r-lg:20px;
  --sh-1:0 1px 2px rgba(15,43,70,.05);
  --sh-2:0 10px 28px rgba(15,43,70,.10);
  --sh-3:0 20px 48px rgba(15,43,70,.16);
  --ease:cubic-bezier(.2,.7,.3,1);
  --sidebar-w:240px;
  --container:1200px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16.5px;
  line-height:1.9;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,h5{margin:0;color:var(--ink);font-weight:700;line-height:1.35}
h1{font-size:clamp(30px,3.4vw,44px);line-height:1.25}
h2{font-size:clamp(24px,2.4vw,32px)}
h3{font-size:20px;line-height:1.5;font-weight:600}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}
a{color:var(--primary);text-decoration:none;transition:color .22s var(--ease),background-color .22s var(--ease),border-color .22s var(--ease)}
a:hover{color:var(--primary-hover)}
img{max-width:100%;height:auto;display:block;border-radius:12px}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid #7FB3E8;outline-offset:2px;border-radius:4px}
.skip-link{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

.wrap{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}

/* ---------- 骨架 ---------- */
.app{display:flex;align-items:flex-start;min-height:100vh}

/* ---------- 左侧竖栏 ---------- */
.sidebar{
  flex:0 0 var(--sidebar-w);
  width:var(--sidebar-w);
  position:sticky;top:0;
  height:100vh;
  background:var(--card);
  border-right:1px solid var(--border);
  padding:28px 20px 24px;
  display:flex;flex-direction:column;gap:24px;
  z-index:60;
}
.brand{display:flex;align-items:center;gap:12px;color:var(--ink)}
.brand:hover{color:var(--ink)}
.brand-mark{
  flex:0 0 40px;width:40px;height:40px;border-radius:12px;
  background:var(--primary-soft);color:var(--primary);
  display:flex;align-items:center;justify-content:center;font-size:18px;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;min-width:0}
.brand-text strong{font-size:16px;font-weight:700;letter-spacing:.2px;color:var(--ink);white-space:nowrap}
.brand-text small{font-size:12px;color:var(--weak);letter-spacing:.04em}

.side-menu{display:flex;flex-direction:column;gap:4px}
.side-menu a{
  position:relative;
  display:flex;align-items:center;
  min-height:44px;padding:0 14px;
  border-radius:var(--r-sm);
  color:var(--muted);font-size:15px;font-weight:500;
}
.side-menu a:hover{color:var(--primary);background:#F1F7FD}
.side-menu a.active{color:var(--primary);background:var(--primary-soft);font-weight:600}
.side-menu a.active::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:20px;border-radius:0 3px 3px 0;background:var(--primary);
}
.side-foot{margin-top:auto;display:flex;flex-direction:column;gap:12px;border-top:1px solid var(--line);padding-top:20px}
.side-foot p{font-size:12.5px;color:var(--weak);line-height:1.7;margin:0}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;
  border-radius:var(--r-sm);border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  transition:transform .22s var(--ease),background-color .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease);
}
.btn i{font-size:13px}
.btn-primary{background:var(--primary);color:#fff;border-color:var(--primary)}
.btn-primary:hover{background:var(--primary-hover);border-color:var(--primary-hover);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-1)}
.btn-ghost{background:#fff;color:var(--primary);border-color:var(--primary)}
.btn-ghost:hover{background:var(--primary-soft);color:var(--primary-hover);border-color:var(--primary-hover)}
.btn-ghost:active{transform:translateY(1px)}
.btn-block{width:100%}
.btn[disabled]{opacity:.4;cursor:not-allowed}

.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--primary)}
.link-arrow i{font-size:12px;transition:transform .22s var(--ease)}
.link-arrow:hover i{transform:translateX(2px)}
.link-arrow:hover{text-decoration:underline}

/* ---------- 主区 ---------- */
.main{flex:1 1 auto;min-width:0;display:flex;flex-direction:column}
.section{padding:80px 0}
.section-alt{background:var(--alt)}

.sec-head{max-width:760px;margin-bottom:40px}
.eyebrow{font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--primary);text-transform:uppercase;margin-bottom:12px;display:block}
.sec-head h2{margin-bottom:14px}
.sec-head p{font-size:15.5px;color:var(--muted);line-height:1.85;margin:0}
.sec-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px}
.sec-head-row .link-arrow{flex:0 0 auto;padding-bottom:6px}

/* ---------- 页面头 ---------- */
.page-head{
  position:relative;overflow:hidden;
  background:var(--alt);
  padding:44px 0 52px;
  border-bottom:1px solid var(--border);
}
.page-head::after{
  content:"";position:absolute;right:-140px;top:-120px;width:520px;height:360px;
  background:radial-gradient(closest-side,rgba(21,103,196,.09),rgba(21,103,196,0) 72%);
  pointer-events:none;
}
.page-head::before{
  content:"";position:absolute;left:-80px;bottom:-160px;width:360px;height:300px;
  background:radial-gradient(closest-side,rgba(31,158,150,.10),rgba(31,158,150,0) 70%);
  pointer-events:none;
}
.page-head .wrap{position:relative;z-index:1}
.crumbs{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--muted);margin-bottom:18px;flex-wrap:wrap}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--primary)}
.crumbs span{color:var(--weak)}
.crumbs .current{color:var(--primary);font-weight:600}
.page-head h1{max-width:860px;margin-bottom:16px}
.page-head .lead{max-width:720px;font-size:16.5px;color:var(--muted);margin:0}
.head-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;
  font-size:13px;font-weight:600;line-height:1.6;
  background:var(--primary-soft);color:var(--primary);
}
.badge.teal{background:var(--teal-soft);color:var(--teal)}
.badge.warm{background:rgba(224,138,60,.12);color:#B96D24}
.badge.outline{background:#fff;border:1px solid var(--border);color:var(--muted)}

/* ---------- 流程总览 ---------- */
.overview{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:40px;align-items:center}
.check-list{display:flex;flex-direction:column;gap:14px;margin:0}
.check-list li{display:flex;gap:12px;align-items:flex-start;font-size:15.5px;color:var(--text);line-height:1.8}
.check-list i{color:var(--teal);font-size:15px;margin-top:6px;flex:0 0 auto}
.overview-figure{margin:0}
.overview-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r);border:1px solid var(--border)}
.overview-figure figcaption{font-size:13px;color:var(--weak);text-align:center;margin-top:12px}

/* ---------- 步骤 + 锚点 ---------- */
.flow-layout{display:grid;grid-template-columns:minmax(0,1fr) 232px;gap:40px;align-items:start}
.flow-main{min-width:0}
.flow-intro{font-size:15.5px;color:var(--muted);max-width:720px;margin-bottom:8px}

.step-list{border-top:1px solid var(--line);margin-top:24px}
.step-item{
  display:grid;grid-template-columns:48px minmax(0,1fr);gap:20px;
  padding:30px 0;border-bottom:1px solid var(--line);
  scroll-margin-top:90px;
}
.step-num{
  width:38px;height:38px;border-radius:999px;
  background:var(--primary);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:700;letter-spacing:.02em;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
.step-body h3{margin-bottom:10px}
.step-body p{font-size:15.5px;color:var(--muted);line-height:1.85;margin-bottom:12px}
.step-tip{
  display:flex;gap:10px;align-items:flex-start;
  border-left:3px solid var(--primary);
  background:#F4F8FD;
  padding:12px 16px;border-radius:0 var(--r-sm) var(--r-sm) 0;
  font-size:14px;color:var(--muted);line-height:1.8;margin:0;
}
.step-tip i{color:var(--primary);margin-top:5px;flex:0 0 auto}

.anchor-nav{
  position:sticky;top:28px;
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--r);
  padding:20px;
  scroll-margin-top:90px;
}
.anchor-nav h4{font-size:13px;letter-spacing:.08em;color:var(--weak);font-weight:600;margin-bottom:14px;text-transform:uppercase}
.anchor-nav ul{display:flex;flex-direction:column;gap:2px}
.anchor-nav a{
  position:relative;display:block;
  padding:8px 12px;border-radius:8px;
  font-size:14px;color:var(--muted);line-height:1.6;
  transition:color .22s var(--ease),background-color .22s var(--ease);
}
.anchor-nav a:hover{color:var(--primary);background:#F1F7FD}
.anchor-nav a.current{color:var(--primary);font-weight:600;background:var(--primary-soft)}
.anchor-nav a.current::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:16px;border-radius:0 3px 3px 0;background:var(--primary);
}

/* ---------- 结果说明卡 ---------- */
.soft-card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--r);
  padding:26px;
  height:100%;
  box-shadow:none;
  transition:border-color .22s var(--ease),transform .22s var(--ease);
}
.soft-card:hover{border-color:var(--primary-30);transform:translateY(-2px)}
.soft-card .card-icon{
  width:40px;height:40px;border-radius:999px;
  background:var(--teal-soft);color:var(--teal);
  display:flex;align-items:center;justify-content:center;font-size:16px;margin-bottom:16px;
}
.soft-card h3{margin-bottom:10px}
.soft-card p{font-size:15px;color:var(--muted);line-height:1.82;margin:0}

/* ---------- 注意项线列表 ---------- */
.note-list{border-top:1px solid var(--line);margin-top:8px}
.note-item{
  display:grid;grid-template-columns:22px minmax(0,1fr);gap:14px;
  padding:20px 0;border-bottom:1px solid var(--line);
  font-size:15.5px;color:var(--muted);line-height:1.85;
}
.note-item i{color:var(--warm);margin-top:7px;font-size:14px}
.note-item strong{color:var(--ink);font-weight:600}

/* ---------- CTA 横幅 ---------- */
.cta-band{
  background:var(--alt);
  border-top:1px solid var(--border);
  border-bottom:1px solid var(--border);
  padding:48px 0;
}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px}
.cta-copy h2{font-size:clamp(22px,2.1vw,28px);margin-bottom:10px}
.cta-copy p{font-size:15.5px;color:var(--muted);margin:0;max-width:640px}
.cta-actions{display:flex;gap:12px;flex:0 0 auto;flex-wrap:wrap}

/* ---------- 顶部条 + 抽屉 ---------- */
.mobile-bar{
  display:none;
  position:fixed;top:0;left:0;right:0;height:62px;z-index:80;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--border);
  align-items:center;justify-content:space-between;
  padding:0 16px;
  backdrop-filter:saturate(180%) blur(8px);
}
.mobile-bar .brand-text strong{font-size:14.5px}
.mobile-bar .brand-mark{flex:0 0 34px;width:34px;height:34px;font-size:15px;border-radius:10px}
.menu-toggle{
  width:44px;height:44px;border-radius:var(--r-sm);
  border:1px solid var(--border);background:#fff;color:var(--primary);
  display:flex;align-items:center;justify-content:center;font-size:17px;cursor:pointer;
}
.menu-toggle:hover{background:var(--primary-soft);border-color:var(--primary-30)}

.drawer{
  position:fixed;top:0;left:0;bottom:0;width:280px;max-width:86vw;
  background:#fff;z-index:120;
  padding:24px 20px;
  overflow-y:auto;
  transform:translateX(-100%);
  transition:transform .28s var(--ease);
  box-shadow:var(--sh-3);
  display:flex;flex-direction:column;gap:22px;
}
.drawer.open{transform:translateX(0)}
.drawer-mask{
  position:fixed;inset:0;background:rgba(15,43,70,.42);
  opacity:0;visibility:hidden;transition:opacity .28s var(--ease),visibility .28s var(--ease);
  z-index:110;
}
.drawer-mask.open{opacity:1;visibility:visible}
.drawer-close{
  align-self:flex-end;width:40px;height:40px;border-radius:var(--r-sm);
  border:1px solid var(--border);background:#fff;color:var(--muted);
  display:flex;align-items:center;justify-content:center;cursor:pointer;
}
.drawer-close:hover{color:var(--primary);border-color:var(--primary-30)}
.drawer-contact{border-top:1px solid var(--line);padding-top:18px;font-size:13.5px;color:var(--muted);line-height:1.8}
.drawer-contact strong{display:block;color:var(--ink);font-size:14px;margin-bottom:6px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);padding:64px 0 28px;margin-top:auto}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.3fr;
  gap:40px 32px;
  padding-bottom:40px;
  border-bottom:1px solid rgba(255,255,255,.14);
}
.footer-brand .brand{color:#fff;margin-bottom:18px}
.footer-brand .brand:hover{color:#fff}
.footer-brand .brand-mark{background:rgba(255,255,255,.10);color:#fff}
.footer-brand .brand-text strong{color:#fff}
.footer-brand .brand-text small{color:rgba(255,255,255,.55)}
.footer-brand p{font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.62);max-width:300px;margin:0}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{color:rgba(255,255,255,.70);font-size:14px}
.footer-col a:hover{color:#fff;text-decoration:underline}
.footer-sub{margin-top:14px;display:flex;flex-direction:column;gap:10px}
.footer-sub input{
  height:44px;border-radius:var(--r-sm);
  border:1px solid rgba(255,255,255,.20);
  background:rgba(255,255,255,.08);
  color:#fff;font-size:14.5px;padding:0 14px;width:100%;
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.footer-sub input::placeholder{color:rgba(255,255,255,.45)}
.footer-sub input:focus{outline:none;border-color:#7FB3E8;box-shadow:0 0 0 3px rgba(127,179,232,.22)}
.footer-sub .btn-primary{background:var(--primary);border-color:var(--primary)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding-top:22px;font-size:13px;color:rgba(255,255,255,.55);flex-wrap:wrap;
}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;right:24px;bottom:24px;width:46px;height:46px;border-radius:999px;
  background:#fff;border:1px solid var(--border);color:var(--primary);
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--sh-1);cursor:pointer;
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s var(--ease);
  z-index:90;
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{border-color:var(--primary-30);box-shadow:var(--sh-2)}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  :root{--sidebar-w:200px}
  .wrap{padding:0 20px}
  .flow-layout{grid-template-columns:minmax(0,1fr) 210px;gap:28px}
  .overview{gap:28px}
}

@media (max-width:991px){
  .app{display:block}
  .sidebar{display:none}
  .mobile-bar{display:flex}
  .main{padding-top:62px}
  .section{padding:64px 0}
  .page-head{padding:36px 0 44px}
  .overview{grid-template-columns:1fr;gap:28px}
  .overview-figure{order:-1}
  .flow-layout{grid-template-columns:1fr;gap:28px}
  .anchor-nav{
    position:static;
    display:flex;align-items:center;gap:8px;
    overflow-x:auto;
    padding:14px;
    border-radius:var(--r);
    -webkit-overflow-scrolling:touch;
  }
  .anchor-nav h4{display:none}
  .anchor-nav ul{flex-direction:row;flex-wrap:nowrap;gap:8px}
  .anchor-nav a{
    white-space:nowrap;border:1px solid var(--border);
    border-radius:999px;padding:8px 14px;font-size:13.5px;background:#fff;
  }
  .anchor-nav a.current::before{display:none}
  .anchor-nav a.current{border-color:var(--primary-30);background:var(--primary-soft)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px 24px}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:24px}
}

@media (max-width:767px){
  body{font-size:16px}
  .wrap{padding:0 16px}
  .section{padding:48px 0}
  .page-head{padding:30px 0 36px}
  .sec-head{margin-bottom:28px}
  .step-item{grid-template-columns:38px minmax(0,1fr);gap:14px;padding:24px 0}
  .step-num{width:32px;height:32px;font-size:12.5px}
  .soft-card{padding:22px}
  .cta-band{padding:40px 0}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .to-top{right:16px;bottom:16px}
}

/* roulang page: category3 */
/* ============ 设计变量 ============ */
:root{
  --c-primary:#1567C4;
  --c-primary-dark:#0F55A8;
  --c-primary-soft:#E8F1FB;
  --c-primary-line:rgba(21,103,196,.30);
  --c-accent:#1F9E96;
  --c-accent-soft:#E4F5F3;
  --c-warm:#E08A3C;
  --c-ink:#0F2B46;
  --c-text:#2A3B4D;
  --c-muted:#5B6F82;
  --c-faint:#8FA0B0;
  --c-bg:#F6F9FC;
  --c-bg-alt:#EDF3F9;
  --c-card:#FFFFFF;
  --c-border:#E2EAF2;
  --c-divider:#EDF2F7;
  --r-card:14px;
  --r-lg:20px;
  --r-btn:10px;
  --r-img:12px;
  --sh-1:0 1px 2px rgba(15,43,70,.05);
  --sh-2:0 10px 28px rgba(15,43,70,.10);
  --sh-3:0 20px 48px rgba(15,43,70,.16);
  --sidebar-w:240px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --font-base:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  --font-mono:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
}

/* ============ 基础 reset ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-base);
  font-size:16.5px;
  line-height:1.9;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:700;line-height:1.35;}
h1{font-size:clamp(30px,3.4vw,44px);line-height:1.25;}
h2{font-size:clamp(24px,2.4vw,32px);}
h3{font-size:20px;line-height:1.5;font-weight:600;}
p{margin:0;}
img{max-width:100%;display:block;}
a{color:var(--c-primary);text-decoration:none;transition:color 200ms var(--ease);}
a:hover{color:var(--c-primary-dark);}
button{font-family:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
table{border-collapse:separate;border-spacing:0;width:100%;}
input,select,textarea{font-family:inherit;}
:focus-visible{outline:2px solid #7FB3E8;outline-offset:2px;}
.skip-link{
  position:absolute;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;
}

/* ============ 布局骨架 ============ */
.page{margin-left:var(--sidebar-w);min-height:100vh;display:flex;flex-direction:column;}
.main{flex:1;}
.wrap{max-width:1200px;margin:0 auto;padding:0 40px;width:100%;}
.section{padding:80px 0;}
.section--alt{background:var(--c-bg-alt);}
.section--tight{padding:64px 0;}

/* ============ 左侧竖向导航 ============ */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
  background:#fff;border-right:1px solid var(--c-border);
  padding:28px 20px 24px;display:flex;flex-direction:column;gap:26px;
  overflow-y:auto;z-index:60;
}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:inherit;}
.brand-mark{
  width:40px;height:40px;flex:0 0 40px;border-radius:12px;
  background:var(--c-primary-soft);color:var(--c-primary);
  display:grid;place-items:center;font-size:17px;
}
.brand-text{display:block;min-width:0;}
.brand-text strong{display:block;font-size:15.5px;font-weight:700;color:var(--c-ink);line-height:1.4;}
.brand-text small{display:block;font-size:12px;color:var(--c-faint);line-height:1.5;letter-spacing:.02em;}
.side-menu{display:flex;flex-direction:column;gap:4px;}
.side-menu a{
  position:relative;display:block;padding:11px 12px 11px 16px;border-radius:10px;
  font-size:15px;font-weight:500;color:var(--c-muted);
  transition:background 200ms var(--ease),color 200ms var(--ease);
}
.side-menu a::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:0;border-radius:2px;background:var(--c-primary);
  transition:height 220ms var(--ease);
}
.side-menu a:hover{color:var(--c-primary);background:var(--c-primary-soft);}
.side-menu a.active{color:var(--c-primary);background:var(--c-primary-soft);}
.side-menu a.active::before{height:22px;}
.side-foot{margin-top:auto;border-top:1px solid var(--c-divider);padding-top:20px;display:flex;flex-direction:column;gap:12px;}
.side-foot p{font-size:13.5px;line-height:1.8;color:var(--c-faint);}
.side-note{font-size:12px;color:var(--c-faint);letter-spacing:.02em;}

/* ============ 顶部条与抽屉（移动端） ============ */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:64px;z-index:80;
  background:#fff;border-bottom:1px solid var(--c-border);
  align-items:center;
}
.topbar-inner{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;display:flex;align-items:center;justify-content:space-between;gap:16px;}
.topbar .brand-text small{display:none;}
.burger{
  width:44px;height:44px;border-radius:10px;border:1px solid var(--c-border);
  background:#fff;color:var(--c-ink);font-size:17px;cursor:pointer;
  display:grid;place-items:center;transition:background 200ms var(--ease),color 200ms var(--ease);
}
.burger:hover{background:var(--c-primary-soft);color:var(--c-primary);}
.drawer{
  position:fixed;top:0;left:0;bottom:0;width:282px;max-width:86vw;z-index:120;
  background:#fff;padding:22px 20px 28px;overflow-y:auto;
  transform:translateX(-102%);transition:transform 260ms var(--ease);
  box-shadow:var(--sh-3);display:flex;flex-direction:column;gap:22px;
}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;}
.drawer-close{
  width:44px;height:44px;border-radius:10px;border:1px solid var(--c-border);
  background:#fff;color:var(--c-muted);font-size:16px;cursor:pointer;
}
.drawer-close:hover{background:var(--c-primary-soft);color:var(--c-primary);}
.drawer-mask{
  position:fixed;inset:0;background:rgba(15,43,70,.45);z-index:110;
  opacity:0;pointer-events:none;transition:opacity 260ms var(--ease);
}
.drawer-mask.open{opacity:1;pointer-events:auto;}
.drawer-contact{border-top:1px solid var(--c-divider);padding-top:18px;font-size:13.5px;color:var(--c-faint);line-height:1.85;}
@media (min-width:992px){.drawer,.drawer-mask{display:none !important;}}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  cursor:pointer;white-space:nowrap;text-decoration:none;
  transition:background 220ms var(--ease),color 220ms var(--ease),box-shadow 220ms var(--ease),transform 220ms var(--ease),border-color 220ms var(--ease);
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--c-primary-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:#fff;color:var(--c-primary);border-color:var(--c-primary-line);}
.btn-ghost:hover{background:rgba(21,103,196,.08);color:var(--c-primary-dark);transform:translateY(-1px);}
.btn-sm{height:40px;padding:0 16px;font-size:14px;}
.btn[disabled],.btn.disabled{opacity:.4;pointer-events:none;}
.text-link{
  display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;
  color:var(--c-primary);text-decoration:none;
}
.text-link i{transition:transform 220ms var(--ease);font-size:12px;}
.text-link:hover{text-decoration:underline;}
.text-link:hover i{transform:translateX(2px);}

/* ============ 徽章与标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;font-size:13px;font-weight:600;line-height:1.7;
  background:var(--c-primary-soft);color:var(--c-primary);white-space:nowrap;
}
.badge--accent{background:var(--c-accent-soft);color:var(--c-accent);}
.badge--warm{background:rgba(224,138,60,.13);color:#B96D24;}

/* ============ 区块标题 ============ */
.eyebrow{
  display:block;font-size:13px;font-weight:600;letter-spacing:.08em;
  color:var(--c-primary);margin-bottom:12px;text-transform:uppercase;
}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head h2{margin-bottom:12px;}
.section-head .lead{font-size:16px;line-height:1.8;color:var(--c-muted);}
.section-head--row{
  max-width:none;display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;
}
.section-head--row > div{max-width:720px;}

/* ============ 页面头（通栏） ============ */
.page-head{
  background:var(--c-bg-alt);
  border-bottom:1px solid var(--c-border);
  padding:64px 0 56px;
}
.crumbs{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--c-faint);margin-bottom:20px;flex-wrap:wrap;}
.crumbs a{color:var(--c-faint);}
.crumbs a:hover{color:var(--c-primary);}
.crumbs .cur{color:var(--c-primary);font-weight:600;}
.page-head h1{margin-bottom:18px;max-width:900px;}
.page-head .lead{max-width:820px;font-size:16.5px;line-height:1.9;color:var(--c-muted);}
.head-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:30px;}

/* ============ 卡片通用 ============ */
.card{
  background:var(--c-card);border:1px solid var(--c-border);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:26px;
  transition:border-color 220ms var(--ease),box-shadow 220ms var(--ease),transform 220ms var(--ease);
}
.card:hover{border-color:var(--c-primary-line);box-shadow:var(--sh-2);transform:translateY(-2px);}
.card-title{font-size:19px;font-weight:600;color:var(--c-ink);margin-bottom:10px;}
.card-text{font-size:15px;line-height:1.8;color:var(--c-muted);}

/* ============ 对比矩阵 ============ */
.matrix-panel{
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);overflow:hidden;
}
.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;}
.matrix{min-width:820px;width:100%;}
.matrix th,.matrix td{
  padding:16px 20px;text-align:left;vertical-align:top;
  font-size:15px;line-height:1.75;color:var(--c-text);
  border-bottom:1px solid var(--c-divider);
}
.matrix thead th{
  background:var(--c-bg-alt);color:var(--c-ink);font-weight:600;font-size:14px;
  letter-spacing:.02em;border-bottom:1px solid var(--c-border);white-space:nowrap;
}
.matrix thead th .badge{margin-left:8px;}
.matrix tbody th{
  width:190px;background:#FBFDFF;color:var(--c-ink);
  font-weight:600;font-size:14.5px;
}
.matrix tbody tr:hover td{background:#FAFCFF;}
.matrix tbody tr:last-child th,
.matrix tbody tr:last-child td{border-bottom:none;}
.matrix .rec{background:#F4F9FF;position:relative;}
.matrix thead th.rec{
  border-top:2px solid var(--c-primary);
  border-left:2px solid var(--c-primary);
  border-right:2px solid var(--c-primary);
  border-radius:12px 12px 0 0;
}
.matrix td.rec{border-left:2px solid var(--c-primary);border-right:2px solid var(--c-primary);}
.matrix tbody tr:last-child td.rec{border-bottom:2px solid var(--c-primary);border-radius:0 0 12px 12px;}
.matrix tbody tr:hover td.rec{background:#EDF5FE;}
.scroll-hint{
  display:none;font-size:13px;color:var(--c-faint);
  padding:12px 20px 16px;border-top:1px solid var(--c-divider);
}
.table-note{
  margin-top:16px;font-size:13.5px;line-height:1.8;color:var(--c-faint);
}

/* ============ 差异说明卡组 ============ */
.advice-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.advice-grid .card--wide{grid-column:1 / -1;}
.card--wide{display:grid;grid-template-columns:1.15fr .85fr;gap:32px;align-items:center;padding:30px;}
.card--wide figure{margin:0;border-radius:var(--r-img);overflow:hidden;background:var(--c-bg-alt);}
.card--wide img{width:100%;height:100%;aspect-ratio:4/3;object-fit:cover;}
.mini-list{display:flex;flex-direction:column;gap:10px;margin-top:16px;}
.mini-list li{
  position:relative;padding-left:26px;font-size:14.5px;line-height:1.8;color:var(--c-muted);
}
.mini-list li i{
  position:absolute;left:0;top:6px;color:var(--c-accent);font-size:13px;
}
.card-icon{
  width:40px;height:40px;border-radius:50%;display:grid;place-items:center;
  font-size:16px;margin-bottom:16px;
}
.card-icon--primary{background:var(--c-primary-soft);color:var(--c-primary);}
.card-icon--accent{background:var(--c-accent-soft);color:var(--c-accent);}

/* ============ FAQ 分割线列表 ============ */
.qa-list{max-width:860px;border-top:1px solid var(--c-divider);}
.qa-item{padding:26px 0;border-bottom:1px solid var(--c-divider);}
.qa-item h3{font-size:18px;margin-bottom:10px;color:var(--c-ink);display:flex;gap:10px;align-items:flex-start;}
.qa-item h3 span{
  flex:0 0 auto;font-size:13px;font-weight:600;color:var(--c-primary);
  background:var(--c-primary-soft);border-radius:999px;padding:3px 10px;margin-top:2px;
}
.qa-item p{font-size:15.5px;line-height:1.85;color:var(--c-muted);}

/* ============ CTA 横幅 ============ */
.cta-wrap{padding:0 0 80px;}
.cta-band{
  background:var(--c-primary-soft);
  border:1px solid var(--c-primary-line);
  border-radius:var(--r-lg);
  padding:40px 44px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;
  flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(21px,2vw,26px);margin-bottom:8px;}
.cta-band p{font-size:15.5px;color:var(--c-muted);max-width:620px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-ink);color:rgba(255,255,255,.72);padding:64px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px;}
.site-footer .brand-mark{background:rgba(255,255,255,.10);color:#fff;}
.site-footer .brand-text strong{color:#fff;}
.site-footer .brand-text small{color:rgba(255,255,255,.55);}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);margin-top:16px;max-width:320px;}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin:0 0 16px;}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul a{font-size:14.5px;color:rgba(255,255,255,.70);}
.footer-col ul a:hover{color:#fff;text-decoration:underline;}
.footer-sub{display:flex;gap:10px;margin-top:14px;flex-wrap:wrap;}
.footer-sub input{
  flex:1 1 150px;min-width:0;height:44px;padding:0 14px;
  border-radius:10px;border:1px solid rgba(255,255,255,.18);
  background:rgba(255,255,255,.06);color:#fff;font-size:14.5px;
  transition:border-color 200ms var(--ease),box-shadow 200ms var(--ease);
}
.footer-sub input::placeholder{color:rgba(255,255,255,.45);}
.footer-sub input:focus{
  outline:none;border-color:#7FB3E8;box-shadow:0 0 0 3px rgba(127,179,232,.22);
}
.footer-sub .btn{height:44px;padding:0 18px;font-size:14.5px;}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;color:rgba(255,255,255,.55);
}

/* ============ 返回顶部 ============ */
.to-top{
  position:fixed;right:26px;bottom:26px;width:46px;height:46px;border-radius:50%;
  border:1px solid var(--c-primary-line);background:#fff;color:var(--c-primary);
  display:grid;place-items:center;cursor:pointer;box-shadow:var(--sh-1);
  opacity:0;pointer-events:none;transform:translateY(8px);z-index:70;
  transition:opacity 220ms var(--ease),transform 220ms var(--ease),box-shadow 220ms var(--ease);
}
.to-top.show{opacity:1;pointer-events:auto;transform:translateY(0);}
.to-top:hover{box-shadow:var(--sh-2);background:var(--c-primary-soft);}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  :root{--sidebar-w:200px;}
  .wrap{padding:0 28px;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px;}
  .footer-col:last-child{grid-column:1 / -1;}
}
@media (max-width:991px){
  :root{--sidebar-w:0px;}
  .sidebar{display:none;}
  .topbar{display:flex;}
  .page{margin-left:0;padding-top:64px;}
  .wrap{padding:0 24px;}
  .section{padding:64px 0;}
  .page-head{padding:48px 0 44px;}
  .card--wide{grid-template-columns:1fr;gap:24px;}
  .card--wide figure{order:-1;}
  .advice-grid{grid-template-columns:1fr;}
  .cta-band{padding:32px 28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .wrap{padding:0 20px;}
  .section{padding:48px 0;}
  .section--tight{padding:40px 0;}
  .page-head{padding:40px 0 36px;}
  .page-head .lead{font-size:16px;}
  .section-head{margin-bottom:32px;}
  .section-head--row{align-items:flex-start;}
  .head-actions .btn,.cta-actions .btn{flex:1 1 100%;}
  .card{padding:22px;}
  .card--wide{padding:22px;}
  .badge{font-size:12.5px;}
  .qa-item{padding:22px 0;}
  .qa-item h3{font-size:17px;}
  .cta-band{padding:28px 22px;text-align:left;}
  .cta-actions{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .scroll-hint{display:block;}
  .to-top{right:18px;bottom:18px;}
  .topbar .brand-text strong{font-size:14.5px;}
}

/* roulang page: category4 */
:root{
  --primary:#1567C4;
  --primary-hover:#0F55A8;
  --primary-light:#E8F1FB;
  --primary-30:rgba(21,103,196,.30);
  --accent:#1F9E96;
  --accent-light:rgba(31,158,150,.10);
  --warm:#E08A3C;
  --warm-text:#B96C24;
  --ink:#0F2B46;
  --text:#2A3B4D;
  --muted:#5B6F82;
  --faint:#8FA0B0;
  --bg:#F6F9FC;
  --bg-alt:#EDF3F9;
  --card:#FFFFFF;
  --border:#E2EAF2;
  --line:#EDF2F7;
  --danger:#C6453C;
  --r-card:14px;
  --r-lg:20px;
  --r-btn:10px;
  --r-img:12px;
  --sh-1:0 1px 2px rgba(15,43,70,.05);
  --sh-2:0 10px 28px rgba(15,43,70,.10);
  --sh-3:0 20px 48px rgba(15,43,70,.16);
  --ease:cubic-bezier(.2,.7,.3,1);
}

*,*::before,*::after{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16.5px;
  line-height:1.9;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-align:left;
}
h1,h2,h3,h4{margin:0 0 .5em;color:var(--ink);font-weight:700;line-height:1.35;letter-spacing:0}
h1{font-size:clamp(30px,3.4vw,44px);line-height:1.25}
h2{font-size:clamp(24px,2.4vw,32px);line-height:1.35}
h3{font-size:20px;font-weight:600;line-height:1.5}
p{margin:0 0 1em}
ul,ol{margin:0;padding:0;list-style:none}
img{max-width:100%;display:block;border-style:none}
a{color:var(--primary);text-decoration:none;transition:color 180ms var(--ease)}
a:hover{color:var(--primary-hover)}
button{font:inherit;cursor:pointer;border:none;background:none}
input,textarea{font:inherit}
:focus-visible{outline:2px solid #7FB3E8;outline-offset:2px;border-radius:4px}
.skip-link{position:absolute;width:1px;height:1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* ============ 布局骨架 ============ */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:240px;
  background:#fff;border-right:1px solid var(--border);
  padding:26px 18px;display:flex;flex-direction:column;gap:26px;
  overflow-y:auto;z-index:60;
}
.page{margin-left:240px;min-height:100vh;display:flex;flex-direction:column}
main{flex:1}
.wrap{width:100%;max-width:1248px;margin:0 auto;padding:0 32px}

/* ============ 品牌字标 ============ */
.brand{display:flex;align-items:center;gap:10px;color:inherit}
.brand:hover{color:inherit}
.brand-mark{
  width:38px;height:38px;border-radius:11px;background:var(--primary);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:16px;flex:0 0 auto;
  box-shadow:0 6px 14px rgba(21,103,196,.25);
}
.brand-text{display:flex;flex-direction:column;line-height:1.3}
.brand-text strong{font-size:15.5px;font-weight:700;color:var(--ink)}
.brand-text small{font-size:11.5px;color:var(--faint);letter-spacing:.04em}

/* ============ 左侧导航 ============ */
.side-menu{display:flex;flex-direction:column;gap:4px}
.side-menu a{
  position:relative;display:block;padding:11px 14px;border-radius:10px;
  font-size:15px;font-weight:500;color:var(--muted);min-height:44px;line-height:22px;
  transition:background 200ms var(--ease),color 200ms var(--ease);
}
.side-menu a:hover{background:var(--primary-light);color:var(--primary)}
.side-menu a.active{background:var(--primary-light);color:var(--primary);font-weight:600}
.side-menu a.active::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:18px;border-radius:0 3px 3px 0;background:var(--primary);
}
.side-foot{margin-top:auto;background:var(--bg-alt);border-radius:14px;padding:18px}
.side-foot h4{font-size:14px;margin-bottom:6px}
.side-foot p{font-size:13px;color:var(--muted);line-height:1.7;margin-bottom:12px}
.side-foot .btn{width:100%}

/* ============ 移动端顶栏与抽屉 ============ */
.mobile-bar{
  display:none;position:sticky;top:0;z-index:70;align-items:center;justify-content:space-between;
  background:rgba(255,255,255,.96);border-bottom:1px solid var(--border);padding:10px 18px;
}
.menu-toggle{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--border);background:#fff;
  color:var(--ink);display:flex;align-items:center;justify-content:center;font-size:17px;
  transition:background 200ms var(--ease),border-color 200ms var(--ease);
}
.menu-toggle:hover{background:var(--primary-light);border-color:var(--primary-30);color:var(--primary)}
.drawer{
  position:fixed;top:0;left:0;bottom:0;width:284px;background:#fff;z-index:90;
  transform:translateX(-102%);transition:transform 260ms var(--ease);
  padding:22px 18px;display:flex;flex-direction:column;gap:22px;
  box-shadow:var(--sh-3);overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-mask{
  position:fixed;inset:0;background:rgba(15,43,70,.35);opacity:0;pointer-events:none;
  transition:opacity 240ms var(--ease);z-index:80;
}
.drawer-mask.is-open{opacity:1;pointer-events:auto}
.drawer-contact{background:var(--bg-alt);border-radius:14px;padding:18px}
.drawer-contact h4{font-size:14px;margin-bottom:6px}
.drawer-contact p{font-size:13px;color:var(--muted);line-height:1.7;margin:0}

/* ============ 页面头 ============ */
.page-hero{position:relative;overflow:hidden;background:var(--bg-alt);border-bottom:1px solid var(--border);padding:64px 0 56px}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  opacity:.13;
}
.page-hero .wrap{position:relative;z-index:1}
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--faint);margin-bottom:14px}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:var(--faint)}
.page-hero h1{max-width:840px;margin-bottom:14px}
.hero-lead{font-size:16.5px;color:var(--muted);max-width:740px;margin-bottom:20px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px}
.tag{
  display:inline-flex;align-items:center;padding:5px 13px;border-radius:999px;
  font-size:13px;font-weight:600;background:var(--primary-light);color:var(--primary);
}
.tag-accent{background:var(--accent-light);color:var(--accent)}
.tag-warm{background:rgba(224,138,60,.12);color:var(--warm-text)}

/* ============ 区块与标题 ============ */
.section{padding:88px 0}
.section-alt{background:var(--bg-alt)}
.section-head{max-width:740px;margin-bottom:44px}
.eyebrow{display:block;font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--primary);margin-bottom:12px}
.section-head h2{margin-bottom:12px}
.section-lead{font-size:16px;color:var(--muted);margin:0}

/* ============ 栅格 ============ */
.grid-x{display:flex;flex-wrap:wrap;align-items:flex-start}
.grid-margin-x{margin-left:-12px;margin-right:-12px}
.grid-margin-x > .cell{width:100%;padding:0 12px;margin-bottom:24px}
@media (min-width:768px){
  .grid-margin-x > .cell.medium-6{width:50%}
  .scene-offset{margin-top:44px}
}

/* ============ 场景卡 ============ */
.scene-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);height:100%;display:flex;flex-direction:column;
  transition:transform 220ms var(--ease),box-shadow 220ms var(--ease),border-color 220ms var(--ease);
}
.scene-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--primary-30)}
.scene-media{position:relative;aspect-ratio:4/3;overflow:hidden;background:var(--bg-alt)}
.scene-media img{width:100%;height:100%;object-fit:cover;transition:transform 420ms var(--ease)}
.scene-card:hover .scene-media img{transform:scale(1.03)}
.scene-media .badge-float{
  position:absolute;left:14px;top:14px;padding:4px 12px;border-radius:999px;
  background:rgba(255,255,255,.94);color:var(--primary);font-size:12.5px;font-weight:600;
}
.scene-body{padding:24px;display:flex;flex-direction:column;gap:10px;flex:1}
.scene-body h3{margin:0}
.scene-body .concl{margin:0;font-size:15px;color:var(--muted);line-height:1.8}

/* ============ 文字链与按钮 ============ */
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;margin-top:auto;
  font-size:14.5px;font-weight:600;color:var(--primary);padding-top:6px;
}
.link-arrow i{font-size:12px;transition:transform 200ms var(--ease)}
.link-arrow:hover{text-decoration:underline;color:var(--primary-hover)}
.link-arrow:hover i{transform:translateX(2px)}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:11px 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;text-align:center;
  transition:background 220ms var(--ease),color 220ms var(--ease),transform 220ms var(--ease),box-shadow 220ms var(--ease),border-color 220ms var(--ease);
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 6px 16px rgba(21,103,196,.22)}
.btn-primary:hover{background:var(--primary-hover);color:#fff;transform:translateY(-1px);box-shadow:0 10px 24px rgba(21,103,196,.28)}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 12px rgba(21,103,196,.20)}
.btn-ghost{background:#fff;border-color:var(--primary);color:var(--primary)}
.btn-ghost:hover{background:rgba(21,103,196,.08);color:var(--primary-hover);border-color:var(--primary-hover)}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none}

/* ============ 问答区 ============ */
.qa-layout{display:grid;grid-template-columns:minmax(0,1fr) 316px;gap:32px;align-items:start}
.qa-list{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:6px 28px;
}
.qa-item{padding:26px 0;border-bottom:1px solid var(--line)}
.qa-item:last-child{border-bottom:none}
.qa-q{display:flex;gap:12px;align-items:flex-start;margin:0 0 10px;font-size:17px;font-weight:600;color:var(--ink);line-height:1.6}
.qa-num{color:var(--primary);font-size:14px;font-weight:700;line-height:1.95;font-variant-numeric:tabular-nums;flex:0 0 auto}
.qa-a{margin:0;padding-left:26px;font-size:15.5px;line-height:1.85;color:var(--muted)}

.qa-aside{position:sticky;top:24px;display:flex;flex-direction:column;gap:20px}
.side-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--sh-1);
}
.side-card h3{font-size:16px;margin-bottom:8px}
.side-card p{font-size:14px;color:var(--muted);line-height:1.8;margin-bottom:14px}
.side-card.is-accent{background:var(--primary-light);border-color:rgba(21,103,196,.18);box-shadow:none}
.side-card.is-accent p{color:#3C5C7E}
.side-list li + li{border-top:1px solid var(--line)}
.side-list a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:11px 0;font-size:14.5px;color:var(--muted);min-height:44px;
}
.side-list a i{font-size:11px;color:var(--faint);transition:transform 200ms var(--ease)}
.side-list a:hover{color:var(--primary)}
.side-list a:hover i{transform:translateX(2px);color:var(--primary)}

/* ============ CTA 横幅 ============ */
.cta-band{
  background:var(--bg-alt);border:1px solid var(--border);border-radius:var(--r-lg);
  padding:44px;display:flex;align-items:center;justify-content:space-between;gap:32px;
}
.cta-band h2{margin-bottom:8px;font-size:clamp(22px,2.2vw,28px)}
.cta-band p{margin:0;font-size:15.5px;color:var(--muted);max-width:580px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;flex:0 0 auto}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);padding:64px 0 26px}
.site-footer .brand-text strong{color:#fff}
.site-footer .brand-text small{color:rgba(255,255,255,.55)}
.site-footer .brand-mark{background:rgba(255,255,255,.12);box-shadow:none}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:36px}
.footer-brand p{font-size:13.5px;line-height:1.8;color:rgba(255,255,255,.6);margin:16px 0 0;max-width:300px}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:14px}
.footer-col ul li + li{margin-top:10px}
.footer-col a{color:rgba(255,255,255,.7);font-size:14px}
.footer-col a:hover{color:#fff;text-decoration:underline}
.footer-sub{margin-top:14px;display:flex;flex-direction:column;gap:10px}
.footer-sub input{
  width:100%;height:44px;border-radius:var(--r-btn);border:1px solid rgba(255,255,255,.2);
  background:rgba(255,255,255,.08);color:#fff;padding:0 14px;font-size:14px;
  transition:border-color 200ms var(--ease),box-shadow 200ms var(--ease);
}
.footer-sub input::placeholder{color:rgba(255,255,255,.45)}
.footer-sub input:focus{outline:none;border-color:#7FB3E8;box-shadow:0 0 0 3px rgba(127,179,232,.22)}
.footer-sub .btn{width:100%}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;
  font-size:13px;color:rgba(255,255,255,.55);
}

/* ============ 返回顶部 ============ */
.back-top{
  position:fixed;right:26px;bottom:26px;width:46px;height:46px;border-radius:50%;
  background:#fff;border:1px solid var(--primary);color:var(--primary);
  display:flex;align-items:center;justify-content:center;box-shadow:var(--sh-2);
  opacity:0;pointer-events:none;z-index:75;
  transition:opacity 220ms var(--ease),transform 220ms var(--ease);
}
.back-top.is-show{opacity:1;pointer-events:auto}
.back-top:hover{transform:translateY(-2px);background:var(--primary-light)}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .sidebar{width:200px;padding:22px 14px}
  .page{margin-left:200px}
  .wrap{padding:0 24px}
  .section{padding:72px 0}
  .qa-layout{grid-template-columns:minmax(0,1fr) 282px;gap:24px}
  .brand-text strong{font-size:14.5px}
}
@media (max-width:991px){
  .sidebar{display:none}
  .page{margin-left:0}
  .mobile-bar{display:flex}
  .section{padding:64px 0}
  .page-hero{padding:48px 0 42px}
  .qa-layout{grid-template-columns:1fr}
  .qa-aside{position:static}
  .cta-band{flex-direction:column;align-items:flex-start;padding:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
}
@media (max-width:767px){
  body{font-size:16px}
  .section{padding:48px 0}
  .section-head{margin-bottom:32px}
  .qa-list{padding:4px 20px}
  .qa-q{font-size:16px}
  .qa-a{padding-left:0}
  .scene-offset{margin-top:0 !important}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  .wrap{padding:0 18px}
  .page-hero{padding:36px 0 34px}
  .hero-lead{font-size:15.5px}
  .cta-band{padding:28px 22px}
  .side-card{padding:20px}
}