/* roulang page: index */
:root{
  --brand:#2A2A6E;
  --brand-deep:#1C1B4B;
  --accent:#FF7A2F;
  --accent-dark:#E5661C;
  --teal:#2FB6A8;
  --bg:#F7F5F1;
  --card:#FFFFFF;
  --dark:#191833;
  --text:#22213A;
  --text-2:#5F5D78;
  --text-3:#8A879C;
  --text-inv:#F5F4F8;
  --line:#E7E3DB;
  --line-dark:#302F58;
  --r-card:16px;
  --r-img:18px;
  --r-btn:10px;
  --shadow-1:0 2px 4px rgba(34,33,58,.04),0 12px 28px rgba(34,33,58,.08);
  --shadow-2:0 16px 34px rgba(34,33,58,.12);
  --container:1200px;
  --sp:96px;
  --ease:200ms cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Inter","Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:17px;
  line-height:1.9;
  letter-spacing:0;
  color:var(--text);
  background:var(--bg);
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;background:var(--bg)}
a{color:var(--brand);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--accent)}
h1,h2,h3,h4{margin:0;color:var(--text);line-height:1.35;letter-spacing:0;font-weight:700}
h2{font-size:30px;line-height:1.3}
h3{font-size:22px;line-height:1.4}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit;cursor:pointer}
input,textarea,select{font-family:inherit;font-size:16px;color:var(--text)}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
::selection{background:rgba(255,122,47,.22)}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px}
.section{padding:var(--sp) 0}
.section-head{max-width:720px;margin-bottom:48px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--accent);letter-spacing:.04em;margin:0 0 14px}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--accent);display:block}
.section-sub{font-size:16px;color:var(--text-2);margin:14px 0 0;max-width:640px}
.text-link{display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:600;color:var(--brand)}
.text-link i{transition:transform var(--ease);font-size:13px}
.text-link:hover{color:var(--accent)}
.text-link:hover i{transform:translateX(3px)}

/* ============ buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-btn);
  font-size:16px;font-weight:600;border:1.5px solid transparent;
  transition:background var(--ease),color var(--ease),transform var(--ease),border-color var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 8px 20px rgba(255,122,47,.24)}
.btn-primary:hover{background:var(--accent-dark);color:#fff;transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--brand);border-color:var(--brand)}
.btn-ghost:hover{background:rgba(42,42,110,.08);color:var(--brand);transform:translateY(-1px)}
.btn-sm{height:40px;padding:0 18px;font-size:15px}
.btn-block{width:100%}

/* ============ header ============ */
.site-header{
  position:sticky;top:0;z-index:200;
  background:var(--bg);
  border-bottom:1px solid transparent;
  transition:box-shadow .2s ease,border-color .2s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 8px 22px rgba(34,33,58,.07)}
.header-inner{
  max-width:var(--container);margin:0 auto;padding:0 32px;height:64px;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
}
.header-left{display:flex;align-items:center;gap:40px;min-width:0}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{
  width:34px;height:34px;border-radius:10px;background:var(--brand);color:#fff;
  display:grid;place-items:center;font-size:17px;font-weight:800;
}
.logo-text{display:flex;flex-direction:column;line-height:1.1}
.logo-text b{font-size:16px;font-weight:800;color:var(--brand-deep)}
.logo-text i{font-style:normal;font-size:12px;font-weight:500;color:var(--text-3);letter-spacing:.08em;margin-top:2px}
.main-nav ul{display:flex;align-items:center;gap:4px}
.main-nav a{
  position:relative;display:inline-flex;align-items:center;height:64px;padding:0 14px;
  font-size:15px;color:var(--text-2);transition:color .12s ease,transform .12s ease;
}
.main-nav a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:0;height:2px;
  background:var(--accent);transform:scaleX(0);transform-origin:center;transition:transform var(--ease);
}
.main-nav a:hover{color:var(--brand);transform:translateX(1px)}
.main-nav a.active{color:var(--brand);font-weight:600}
.main-nav a.active::after{transform:scaleX(1)}
.header-right{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.nav-search{
  display:flex;align-items:center;overflow:hidden;width:0;opacity:0;
  transition:width .24s ease,opacity .24s ease;
}
.nav-search.is-open{width:224px;opacity:1}
.nav-search input{
  width:100%;height:40px;border-radius:var(--r-btn);border:1px solid var(--line);
  background:#fff;padding:0 14px;font-size:14px;
}
.nav-search input::placeholder{color:var(--text-3)}
.icon-btn{
  width:40px;height:40px;border-radius:var(--r-btn);border:1px solid var(--line);
  background:#fff;color:var(--text-2);display:grid;place-items:center;font-size:15px;
  transition:color var(--ease),border-color var(--ease),background var(--ease);
}
.icon-btn:hover{color:var(--brand);border-color:var(--brand)}
.menu-toggle{display:none}

/* mobile drawer */
.mobile-drawer{
  position:fixed;top:0;right:0;width:min(86vw,360px);height:100%;z-index:300;
  background:var(--brand-deep);color:var(--text-inv);
  transform:translateX(100%);transition:transform .28s ease;
  display:flex;flex-direction:column;
}
.mobile-drawer.is-open{transform:translateX(0)}
.drawer-mask{
  position:fixed;inset:0;background:rgba(25,24,51,.5);z-index:290;
  opacity:0;visibility:hidden;transition:opacity .28s ease,visibility .28s ease;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:0 20px;height:56px;border-bottom:1px solid var(--line-dark)}
.drawer-head .logo-text b{color:#fff}
.drawer-head .logo-text i{color:rgba(245,244,248,.6)}
.drawer-close{background:none;border:0;color:var(--text-inv);font-size:19px;width:40px;height:40px}
.drawer-nav{flex:1 1 auto;padding:12px 0;overflow-y:auto}
.drawer-nav a{
  display:flex;align-items:center;height:52px;padding:0 22px;font-size:16px;
  color:rgba(245,244,248,.82);border-left:3px solid transparent;
}
.drawer-nav a.active{color:#fff;border-left-color:var(--accent);background:rgba(255,255,255,.05)}
.drawer-foot{padding:18px 20px 26px;border-top:1px solid var(--line-dark)}

/* ============ hero ============ */
.hero{position:relative;padding:112px 0 var(--sp);overflow:hidden}
.hero::before{
  content:"";position:absolute;right:-160px;bottom:-220px;width:560px;height:560px;
  border:1px solid var(--brand);border-radius:50%;opacity:.12;pointer-events:none;
}
.hero::after{
  content:"";position:absolute;right:60px;bottom:-90px;width:260px;height:260px;
  border:1px solid var(--teal);border-radius:50%;opacity:.12;pointer-events:none;
}
.hero-grid{align-items:center}
.hero-copy{padding-right:24px}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  color:var(--brand);background:rgba(42,42,110,.08);
  border-radius:999px;padding:7px 16px;margin:0 0 22px;
}
.hero-badge i{color:var(--accent);font-size:12px}
.hero h1{font-size:40px;line-height:1.28;font-weight:800;margin-bottom:20px}
.hero-sub{font-size:17px;color:var(--text-2);max-width:560px;margin-bottom:32px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:38px}
.hero-metrics{display:flex;flex-wrap:wrap;gap:12px}
.hero-metrics li{
  display:flex;align-items:baseline;gap:6px;
  border:1px solid var(--line);border-radius:999px;background:#fff;
  padding:7px 16px;font-size:13px;color:var(--text-2);
}
.hero-metrics b{font-size:17px;font-weight:800;color:var(--brand)}
.hero-visual{position:relative}
.hero-img{
  width:100%;aspect-ratio:4/3.4;object-fit:cover;object-position:center top;
  border-radius:28px 18px 18px 96px;box-shadow:var(--shadow-1);
}

.rule-split{display:flex;height:4px;width:140px;margin:0 auto}
.rule-split span{flex:1}
.rule-split span:first-child{background:var(--accent)}
.rule-split span:last-child{background:var(--teal)}

/* ============ services ============ */
.svc-nav{border-left:1px solid var(--line);margin-left:15px}
.svc-nav-item{
  display:flex;align-items:center;gap:14px;width:100%;text-align:left;
  background:none;border:0;border-left:3px solid transparent;
  padding:16px 14px 16px 18px;font-size:16px;font-weight:600;color:var(--text-2);
  transition:color var(--ease),border-color var(--ease),background var(--ease);
}
.svc-nav-item .num{font-size:13px;font-weight:700;color:var(--text-3);letter-spacing:.04em}
.svc-nav-item:hover{color:var(--brand);background:rgba(42,42,110,.04)}
.svc-nav-item.is-active{color:var(--brand);border-left-color:var(--accent);background:rgba(255,122,47,.06)}
.svc-nav-item.is-active .num{color:var(--accent)}
.svc-panel{display:none}
.svc-panel.is-active{display:block;animation:fadeUp .34s ease both}
@keyframes fadeUp{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
.svc-panel img{
  width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-img);
  margin-bottom:22px;box-shadow:var(--shadow-1);
}
.svc-panel h3{margin-bottom:12px}
.svc-panel p{color:var(--text-2);margin-bottom:18px;max-width:620px}

/* ============ stats ============ */
.stats{background:var(--dark);padding:var(--sp) 0;color:var(--text-inv)}
.stats-grid{align-items:center}
.stat{padding:8px 26px;border-left:1px solid var(--line-dark)}
.stat:first-child{border-left:0;padding-left:0}
.stat-num{font-size:44px;font-weight:800;line-height:1.1;color:#fff;letter-spacing:-.01em}
.stat-num span{font-size:15px;font-weight:500;color:var(--teal);margin-left:6px}
.stat-label{font-size:15px;color:rgba(245,244,248,.68);margin-top:10px}
.stats-note{font-size:15px;color:rgba(245,244,248,.6);margin-top:44px;max-width:640px}

/* ============ cases ============ */
.case-grid{align-items:stretch}
.case-main{
  display:flex;flex-direction:column;height:100%;background:#fff;
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform var(--ease),box-shadow var(--ease);
}
.case-main:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}
.case-main img{width:100%;aspect-ratio:16/9.4;object-fit:cover}
.case-main-body{padding:26px 26px 28px;display:flex;flex-direction:column;flex:1 1 auto}
.case-main-body h3{margin:12px 0 12px}
.case-main-body h3 a{color:var(--text)}
.case-main-body h3 a:hover{color:var(--brand)}
.case-main-body p{font-size:15px;color:var(--text-2);margin-bottom:20px}
.case-main-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:14px;color:var(--text-3)}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  font-size:13px;font-weight:600;line-height:1;
}
.tag-teal{background:rgba(47,182,168,.12);color:#1F8C81}
.tag-brand{background:rgba(42,42,110,.09);color:var(--brand)}
.case-side{display:flex;flex-direction:column;gap:24px;height:100%}
.case-narrow{
  display:flex;flex-direction:column;justify-content:space-between;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;flex:1 1 0;transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.case-narrow:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:transparent}
.case-narrow h3{font-size:18px;margin:10px 0 12px}
.case-narrow h3 a{color:var(--text)}
.case-narrow h3 a:hover{color:var(--brand)}
.case-narrow .case-narrow-foot{display:flex;align-items:center;justify-content:space-between;font-size:14px;color:var(--text-3)}

/* ============ flow ============ */
.flow-grid{margin-top:8px}
.flow-step{position:relative;padding-right:30px}
.flow-step::after{
  content:"";position:absolute;right:6px;top:26px;width:22px;
  border-top:2px dashed var(--teal);opacity:.6;
}
.flow-step:last-child::after{display:none}
.flow-num{
  width:52px;height:52px;border-radius:14px;background:rgba(255,122,47,.1);
  color:var(--accent);display:grid;place-items:center;
  font-size:19px;font-weight:800;margin-bottom:18px;
}
.flow-step h3{font-size:19px;margin-bottom:10px}
.flow-step p{font-size:15px;color:var(--text-2);margin:0}

/* ============ news ============ */
.news{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px}
.news-grid{align-items:stretch}
.news-hero-card{
  display:block;height:100%;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.news-hero-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:transparent}
.news-hero-media img{width:100%;aspect-ratio:16/9;object-fit:cover}
.news-hero-body{padding:24px 26px 26px}
.news-hero-body h3{font-size:20px;margin:12px 0 12px;color:var(--text)}
.news-hero-card:hover h3{color:var(--brand)}
.news-hero-body p{font-size:15px;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:18px}
.news-meta{display:flex;align-items:center;justify-content:space-between;font-size:14px;color:var(--text-3);gap:12px}
.news-compact{display:flex;flex-direction:column;gap:14px;height:100%}
.news-compact li{flex:1 1 0}
.news-compact a{
  display:flex;flex-direction:column;justify-content:center;gap:10px;
  height:100%;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:20px 22px;transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.news-compact a:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:transparent}
.news-compact h3{font-size:17px;color:var(--text);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-compact a:hover h3{color:var(--brand)}
.news-compact .news-meta{font-size:13px}
.news-empty{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:18px;
  padding:64px 24px;background:var(--card);border:1px dashed var(--line);border-radius:var(--r-card);
  text-align:center;
}
.news-empty svg{width:240px;height:120px}
.news-empty p{color:var(--text-2);font-size:16px;margin:0}
.news-empty-actions{display:flex;gap:12px;flex-wrap:wrap;justify-content:center}

/* ============ faq ============ */
.faq{max-width:820px;margin:0 auto}
.faq-item{position:relative;border-bottom:1px solid var(--line);transition:padding .2s ease}
.faq-item:first-child{border-top:1px solid var(--line)}
.faq-item[open]{padding-left:18px}
.faq-item[open]::before{
  content:"";position:absolute;left:0;top:24px;bottom:24px;width:3px;background:var(--accent);border-radius:2px;
}
.faq-q{
  display:flex;align-items:flex-start;gap:16px;cursor:pointer;list-style:none;
  padding:22px 0;font-size:17px;font-weight:600;color:var(--text);
}
.faq-q::-webkit-details-marker{display:none}
.faq-q::after{
  content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;font-size:12px;
  color:var(--text-3);margin-left:auto;transition:transform var(--ease);
}
.faq-item[open] .faq-q::after{transform:rotate(180deg);color:var(--accent)}
.faq-num{font-size:14px;font-weight:800;color:var(--accent);letter-spacing:.04em;padding-top:2px}
.faq-a{padding:0 0 24px 34px;color:var(--text-2);font-size:16px;line-height:1.9}

/* ============ contact ============ */
.contact{background:var(--brand-deep);color:var(--text-inv)}
.contact h2{color:#fff}
.contact .eyebrow{color:var(--teal)}
.contact .eyebrow::before{background:var(--teal)}
.contact .section-sub{color:rgba(245,244,248,.68)}
.contact-info{display:flex;flex-direction:column;gap:22px;padding-right:24px}
.contact-item{display:flex;gap:16px;align-items:flex-start}
.contact-item i{
  width:44px;height:44px;flex:0 0 44px;border-radius:12px;
  background:rgba(255,255,255,.07);color:var(--teal);
  display:grid;place-items:center;font-size:16px;
}
.contact-item h3{font-size:16px;color:#fff;margin-bottom:4px}
.contact-item p{font-size:14px;color:rgba(245,244,248,.66);margin:0}
.form-card{background:#fff;border-radius:var(--r-card);padding:32px;box-shadow:var(--shadow-1)}
.field{margin-bottom:20px}
.field label{display:block;font-size:13px;font-weight:600;color:var(--text-2);margin-bottom:8px}
.field input,.field select,.field textarea{
  width:100%;border:1px solid var(--line);border-radius:var(--r-btn);
  padding:0 16px;height:48px;background:#fff;transition:border-color var(--ease),box-shadow var(--ease);
}
.field textarea{height:118px;padding:14px 16px;line-height:1.7;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(42,42,110,.12);
}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3)}
.form-note{font-size:13px;color:var(--text-3);margin:14px 0 0;line-height:1.7}
.form-msg{font-size:14px;margin:14px 0 0;display:none}
.form-msg.is-ok{display:block;color:#1F8C81}
.form-msg.is-err{display:block;color:#D9480F}

/* ============ footer ============ */
.site-footer{background:var(--dark);color:rgba(245,244,248,.66);padding:80px 0 0;position:relative;overflow:hidden}
.site-footer::after{
  content:"";position:absolute;left:-120px;bottom:-200px;width:420px;height:420px;
  border:1px solid var(--teal);border-radius:50%;opacity:.1;pointer-events:none;
}
.footer-grid{padding-bottom:56px}
.footer-logo{display:flex;align-items:baseline;gap:4px;font-size:20px;font-weight:800;color:#fff}
.footer-logo span{font-weight:500;color:var(--teal);font-size:16px}
.footer-desc{font-size:15px;margin:16px 0 0;max-width:320px;line-height:1.85}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:18px;letter-spacing:.02em}
.footer-col li{margin-bottom:12px}
.footer-col a{font-size:15px;color:rgba(245,244,248,.66)}
.footer-col a:hover{color:#fff;transform:translateX(-2px);display:inline-block}
.footer-col p{font-size:15px;margin:0 0 10px}
.footer-bottom{border-top:1px solid var(--line-dark);padding:22px 0;position:relative;z-index:2}
.footer-bottom .container{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:14px;color:rgba(245,244,248,.5)}

/* ============ responsive ============ */
@media screen and (max-width:1023px){
  :root{--sp:72px}
  .main-nav{display:none}
  .nav-search{display:none}
  .menu-toggle{display:grid}
  .header-inner{padding:0 20px}
  .container{padding:0 20px}
  .hero{padding:96px 0 var(--sp)}
  .hero h1{font-size:34px}
  .hero-copy{padding-right:0;margin-bottom:44px}
  .hero-img{aspect-ratio:16/10}
  .case-side{flex-direction:row;margin-top:24px}
  .case-narrow{flex:1 1 calc(50% - 12px)}
  .flow-step{padding-right:20px;margin-bottom:30px}
  .flow-step::after{display:none}
  .footer-grid>.cell{margin-bottom:36px}
}
@media screen and (max-width:639px){
  :root{--sp:56px}
  body{font-size:16px}
  h2{font-size:24px}
  h3{font-size:19px}
  .hero h1{font-size:27px;line-height:1.36}
  .hero-sub{font-size:16px}
  .hero-actions .btn{width:100%}
  .hero-metrics li{flex:1 1 calc(50% - 6px);justify-content:center}
  .hero-img{border-radius:20px 18px 18px 56px}
  .stat{padding:16px 0 16px 18px}
  .stat:nth-child(odd){border-left:0;padding-left:0}
  .stat-num{font-size:34px}
  .case-side{flex-direction:column}
  .svc-nav{display:none}
  .svc-panel{display:block;margin-bottom:38px}
  .svc-panel:last-child{margin-bottom:0}
  .news-head{flex-direction:column;align-items:flex-start;gap:12px}
  .form-card{padding:22px}
  .faq-a{padding-left:0}
  .faq-item[open]{padding-left:14px}
  .contact-info{padding-right:0;margin-bottom:36px}
  .footer-bottom .container{flex-direction:column;align-items:flex-start;gap:8px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;transition-duration:.01ms !important}
  html{scroll-behavior:auto}
}

/* roulang page: category1 */
:root{
  --c-primary:#2A2A6E;
  --c-primary-deep:#1C1B4B;
  --c-accent:#FF7A2F;
  --c-accent-deep:#E8641B;
  --c-teal:#2FB6A8;
  --c-bg:#F7F5F1;
  --c-surface:#FFFFFF;
  --c-dark:#191833;
  --c-text:#22213A;
  --c-text-2:#5F5D78;
  --c-text-3:#8A879C;
  --c-border:#E7E3DB;
  --c-border-dark:#302F58;
  --c-white:#F5F4F8;
  --r-card:16px;
  --r-img:18px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-1:0 2px 4px rgba(34,33,58,.04),0 12px 28px rgba(34,33,58,.08);
  --sh-2:0 16px 34px rgba(34,33,58,.12);
  --gutter:24px;
  --sp-section:96px;
  --nav-h:64px;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:17px;
  line-height:1.9;
  color:var(--c-text);
  background:var(--c-bg);
  letter-spacing:0;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--c-primary);text-decoration:none;transition:color .18s ease,transform .18s ease;}
a:hover{color:var(--c-accent);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--c-text);font-weight:700;letter-spacing:-0.01em;}
p{margin:0 0 1.1em;color:var(--c-text-2);}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px;}
.container{max-width:1200px;margin:0 auto;padding:0 32px;width:100%;}
.section{padding:var(--sp-section) 0;}
.section-tight{padding:64px 0;}
.section-head{margin-bottom:40px;max-width:760px;}
.section-kicker{
  display:inline-block;font-size:13px;letter-spacing:.04em;color:var(--c-teal);
  font-weight:700;margin-bottom:12px;
}
.section-title{font-size:30px;line-height:1.3;margin-bottom:14px;}
.section-sub{font-size:16px;color:var(--c-text-2);margin:0;}
.eyebrow-line{
  display:inline-flex;align-items:center;gap:10px;font-size:13px;color:var(--c-text-3);
}
.eyebrow-line::before{content:"";width:26px;height:2px;background:var(--c-accent);display:inline-block;}

/* buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
  border:1.5px solid transparent;cursor:pointer;transition:all .2s ease;line-height:1.2;
}
.btn-primary{background:var(--c-accent);color:#fff;}
.btn-primary:hover{background:var(--c-accent-deep);color:#fff;transform:translateY(-1px);}
.btn-ghost{background:transparent;color:var(--c-primary);border-color:var(--c-primary);}
.btn-ghost:hover{background:rgba(42,42,110,.08);color:var(--c-primary);transform:translateY(-1px);}
.btn-light{background:transparent;color:var(--c-white);border-color:rgba(245,244,248,.45);}
.btn-light:hover{background:rgba(245,244,248,.12);color:#fff;}
.btn-sm{padding:10px 18px;font-size:14px;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:15px;color:var(--c-primary);
}
.link-arrow i{transition:transform .2s ease;font-size:12px;}
.link-arrow:hover i{transform:translateX(3px);}
.tag{
  display:inline-block;padding:4px 12px;border-radius:var(--r-pill);font-size:13px;
  background:rgba(47,182,168,.12);color:#1F8C81;font-weight:600;
}
.tag-primary{background:rgba(42,42,110,.09);color:var(--c-primary);}

/* header */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid transparent;transition:border-color .2s ease,box-shadow .2s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--c-border);box-shadow:0 6px 20px rgba(34,33,58,.06);}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:var(--nav-h);}
.header-left{display:flex;align-items:center;gap:40px;}
.brand{display:inline-flex;align-items:center;gap:10px;}
.brand-mark{
  width:34px;height:34px;border-radius:10px;background:var(--c-primary);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;font-size:15px;
}
.brand-text{font-size:18px;font-weight:800;color:var(--c-primary);letter-spacing:0;}
.brand-text span{font-weight:500;color:var(--c-text-2);margin-left:2px;}
.main-nav ul{display:flex;align-items:center;gap:32px;}
.main-nav a{
  position:relative;display:inline-block;font-size:15px;font-weight:500;color:var(--c-text);
  padding:20px 0;transition:color .18s ease,transform .18s ease;
}
.main-nav a:hover{color:var(--c-primary);transform:translateY(-1px);}
.main-nav a.active{color:var(--c-primary);font-weight:700;}
.main-nav a.active::after{
  content:"";position:absolute;left:0;right:0;bottom:14px;height:2px;
  background:var(--c-accent);border-radius:2px;
}
.header-right{display:flex;align-items:center;gap:14px;}
.icon-btn{
  width:38px;height:38px;border-radius:50%;border:1px solid var(--c-border);background:#fff;
  color:var(--c-text-2);display:inline-flex;align-items:center;justify-content:center;cursor:pointer;
  transition:all .2s ease;
}
.icon-btn:hover{border-color:var(--c-primary);color:var(--c-primary);}
.menu-toggle{display:none;}
.mobile-drawer{
  display:none;position:fixed;top:var(--nav-h);left:0;right:0;bottom:0;background:var(--c-primary-deep);
  z-index:55;padding:20px 24px 32px;overflow-y:auto;
}
.mobile-drawer.is-open{display:block;}
.mobile-drawer ul{display:block;}
.mobile-drawer li{border-bottom:1px solid var(--c-border-dark);}
.mobile-drawer a{
  display:flex;align-items:center;height:52px;color:rgba(245,244,248,.86);font-size:16px;
}
.mobile-drawer a.active{color:#fff;font-weight:700;}
.mobile-drawer a:hover{color:#fff;}
.drawer-cta{margin-top:24px;}
.drawer-cta .btn{width:100%;}

/* breadcrumb */
.crumb-bar{padding:24px 0 0;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--c-text-3);}
.breadcrumb li{display:inline-flex;align-items:center;gap:8px;}
.breadcrumb li+li::before{content:"/";color:var(--c-border);}
.breadcrumb a{color:var(--c-text-2);}
.breadcrumb a:hover{color:var(--c-accent);}
.breadcrumb .current{color:var(--c-text);font-weight:600;}

/* banner */
.page-banner{
  position:relative;margin-top:24px;border-radius:var(--r-img);overflow:hidden;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center 30%;
}
.page-banner::after{
  content:"";position:absolute;inset:0;background:rgba(42,42,110,.78);
}
.page-banner-inner{position:relative;z-index:2;padding:64px 56px;max-width:820px;}
.page-banner .tag{background:rgba(255,122,47,.18);color:#FFB98C;}
.page-banner h1{
  color:#fff;font-size:40px;line-height:1.28;margin:16px 0 16px;
}
.page-banner p{color:rgba(245,244,248,.86);font-size:17px;margin:0;max-width:640px;}
.banner-meta{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.banner-meta span{
  font-size:13px;color:rgba(245,244,248,.9);border:1px solid rgba(245,244,248,.28);
  padding:6px 14px;border-radius:var(--r-pill);
}

/* layout */
.layout-wrap{padding-top:56px;}
.sticky-toc{position:sticky;top:calc(var(--nav-h) + 24px);}
.toc-card{
  background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-card);
  padding:24px 22px;box-shadow:var(--sh-1);
}
.toc-card h2{font-size:15px;color:var(--c-text-3);font-weight:600;margin-bottom:14px;letter-spacing:.02em;}
.toc-list li{margin-bottom:2px;}
.toc-list a{
  display:block;padding:10px 12px;border-radius:8px;font-size:15px;color:var(--c-text-2);
  border-left:3px solid transparent;transition:all .18s ease;
}
.toc-list a:hover{background:rgba(42,42,110,.05);color:var(--c-primary);}
.toc-list a.is-active{
  background:rgba(42,42,110,.06);color:var(--c-primary);font-weight:700;
  border-left-color:var(--c-accent);
}
.toc-note{margin-top:18px;padding-top:18px;border-top:1px solid var(--c-border);font-size:13px;color:var(--c-text-3);line-height:1.8;}

.content-block{
  background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-card);
  padding:40px;box-shadow:var(--sh-1);margin-bottom:28px;
}
.content-block h2{font-size:24px;line-height:1.4;margin-bottom:16px;}
.content-block h3{font-size:18px;line-height:1.5;margin:28px 0 10px;}
.content-block p{font-size:16px;line-height:1.9;}
.block-figure{border-radius:var(--r-img);overflow:hidden;background:var(--c-bg);}
.block-figure img{border-radius:var(--r-img);width:100%;object-fit:cover;}
.figure-cap{font-size:13px;color:var(--c-text-3);margin-top:10px;}

.step-list{counter-reset:stepc;margin-top:8px;}
.step-list li{
  position:relative;padding:0 0 22px 52px;border-left:1px solid var(--c-border);margin-left:16px;
}
.step-list li:last-child{border-left-color:transparent;padding-bottom:0;}
.step-list li::before{
  counter-increment:stepc;content:counter(stepc,decimal-leading-zero);
  position:absolute;left:-17px;top:0;width:34px;height:34px;border-radius:50%;
  background:var(--c-primary);color:#fff;font-size:13px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
  font-variant-numeric:tabular-nums;
}
.step-list h3{font-size:17px;margin:4px 0 6px;}
.step-list p{font-size:15px;margin:0;line-height:1.85;}

.point-list li{
  position:relative;padding:8px 0 8px 22px;font-size:15px;color:var(--c-text-2);line-height:1.85;
}
.point-list li::before{
  content:"";position:absolute;left:0;top:17px;width:8px;height:8px;border-radius:50%;
  background:var(--c-teal);
}
.mini-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin-top:8px;}
.mini-card{
  background:var(--c-bg);border:1px solid var(--c-border);border-radius:14px;padding:22px;
  transition:transform .2s ease,box-shadow .2s ease;
}
.mini-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.mini-card h3{font-size:16px;margin:0 0 8px;}
.mini-card p{font-size:14px;margin:0;line-height:1.8;}
.mini-card .mini-icon{
  width:36px;height:36px;border-radius:10px;background:rgba(42,42,110,.08);color:var(--c-primary);
  display:inline-flex;align-items:center;justify-content:center;margin-bottom:12px;font-size:15px;
}
.note-strip{
  margin-top:24px;border-left:4px solid var(--c-accent);background:rgba(255,122,47,.06);
  padding:16px 20px;border-radius:0 12px 12px 0;font-size:15px;color:var(--c-text-2);line-height:1.85;
}

/* scene cards */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.scene-card{
  background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);transition:transform .2s ease,box-shadow .2s ease;
  display:flex;flex-direction:column;
}
.scene-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.scene-card img{height:170px;width:100%;object-fit:cover;background:var(--c-bg);}
.scene-card-body{padding:22px 22px 24px;flex:1;display:flex;flex-direction:column;}
.scene-card-body h3{font-size:17px;margin-bottom:10px;line-height:1.5;}
.scene-card-body p{font-size:14.5px;color:var(--c-text-2);margin-bottom:14px;line-height:1.85;}
.scene-card-body .link-arrow{margin-top:auto;font-size:14px;}

/* dark stats */
.dark-band{background:var(--c-dark);padding:var(--sp-section) 0;position:relative;overflow:hidden;}
.dark-band::after{
  content:"";position:absolute;right:-80px;bottom:-120px;width:420px;height:420px;border-radius:50%;
  border:1px solid rgba(245,244,248,.08);pointer-events:none;
}
.dark-band .section-kicker{color:var(--c-teal);}
.dark-band .section-title{color:#fff;}
.dark-band .section-sub{color:rgba(245,244,248,.7);}
.stat-row{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--c-border-dark);margin-top:44px;}
.stat-unit{padding:32px 24px 8px;border-right:1px solid var(--c-border-dark);}
.stat-unit:last-child{border-right:none;}
.stat-num{
  font-size:38px;font-weight:800;color:#fff;line-height:1.1;font-variant-numeric:tabular-nums;
  font-family:Inter,"Noto Sans SC",system-ui,sans-serif;
}
.stat-num small{font-size:15px;font-weight:600;color:var(--c-teal);margin-left:6px;}
.stat-unit p{font-size:14px;color:rgba(245,244,248,.66);margin:12px 0 0;line-height:1.8;}

/* faq */
.faq-wrap{max-width:820px;margin:0 auto;}
.faq-item{
  background:var(--c-surface);border:1px solid var(--c-border);border-radius:14px;
  margin-bottom:14px;overflow:hidden;transition:box-shadow .2s ease;
}
.faq-item[open]{box-shadow:var(--sh-1);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;gap:16px;align-items:flex-start;
  padding:22px 26px;font-size:16.5px;font-weight:600;color:var(--c-text);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-num{
  font-variant-numeric:tabular-nums;color:var(--c-accent);font-weight:700;font-size:15px;
  min-width:30px;padding-top:2px;
}
.faq-item summary .faq-caret{margin-left:auto;color:var(--c-text-3);font-size:13px;transition:transform .2s ease;padding-top:4px;}
.faq-item[open] summary .faq-caret{transform:rotate(180deg);}
.faq-answer{
  padding:0 26px 24px 72px;border-left:3px solid var(--c-accent);margin-left:26px;
  border-radius:0;
}
.faq-answer p{font-size:15.5px;line-height:1.9;margin:0 0 10px;}

/* cta band */
.cta-band{
  background:var(--c-primary);border-radius:var(--r-img);padding:52px 56px;
  display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap;
}
.cta-band h2{color:#fff;font-size:26px;line-height:1.4;margin-bottom:12px;}
.cta-band p{color:rgba(245,244,248,.78);margin:0;font-size:15.5px;max-width:560px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* footer */
.site-footer{background:var(--c-primary-deep);color:rgba(245,244,248,.72);margin-top:var(--sp-section);padding-top:72px;}
.footer-grid{padding-bottom:48px;}
.footer-logo{font-size:19px;font-weight:800;color:#fff;margin-bottom:16px;}
.footer-logo span{font-weight:500;color:rgba(245,244,248,.7);margin-left:2px;}
.footer-desc{font-size:14.5px;color:rgba(245,244,248,.66);line-height:1.9;max-width:330px;}
.footer-col h4{font-size:14px;color:#fff;margin-bottom:16px;font-weight:700;}
.footer-col ul li{margin-bottom:10px;}
.footer-col a{font-size:15px;color:rgba(245,244,248,.68);display:inline-block;transition:color .18s ease,transform .18s ease;}
.footer-col a:hover{color:#fff;transform:translateX(-2px);}
.footer-col p{font-size:14.5px;color:rgba(245,244,248,.66);margin:0 0 8px;line-height:1.85;}
.footer-bottom{border-top:1px solid var(--c-border-dark);padding:20px 0;}
.footer-bottom .container{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;}
.footer-bottom span{font-size:13.5px;color:rgba(245,244,248,.5);}

/* responsive */
@media screen and (max-width:1024px){
  :root{--sp-section:72px;}
  .container{padding:0 24px;}
  .page-banner-inner{padding:52px 40px;}
  .page-banner h1{font-size:34px;}
  .scene-grid{grid-template-columns:repeat(2,1fr);}
  .stat-row{grid-template-columns:repeat(2,1fr);}
  .stat-unit{border-bottom:1px solid var(--c-border-dark);}
  .stat-unit:nth-child(2n){border-right:none;}
}
@media screen and (max-width:640px){
  :root{--sp-section:56px;--nav-h:56px;}
  body{font-size:16px;}
  .container{padding:0 20px;}
  .main-nav{display:none;}
  .menu-toggle{display:inline-flex;}
  .header-left{gap:0;}
  .header-right .btn-sm{display:none;}
  .brand-text{font-size:16px;}
  .page-banner{margin-top:16px;border-radius:14px;}
  .page-banner-inner{padding:36px 24px;}
  .page-banner h1{font-size:27px;line-height:1.34;}
  .page-banner p{font-size:15px;}
  .page-banner::after{background:rgba(42,42,110,.8);}
  .content-block{padding:24px 20px;border-radius:14px;}
  .content-block h2{font-size:20px;}
  .mini-grid{grid-template-columns:1fr;}
  .scene-grid{grid-template-columns:1fr;}
  .stat-row{grid-template-columns:repeat(2,1fr);}
  .stat-unit{padding:24px 14px 8px;}
  .stat-num{font-size:28px;}
  .faq-item summary{padding:18px 18px;font-size:15.5px;gap:10px;}
  .faq-answer{padding:0 18px 20px 18px;margin-left:0;border-left:none;border-top:3px solid rgba(255,122,47,.35);padding-top:16px;}
  .cta-band{padding:32px 24px;border-radius:14px;}
  .cta-band h2{font-size:21px;}
  .cta-actions .btn{width:100%;}
  .sticky-toc{position:static;margin-bottom:24px;}
  .toc-card{padding:16px;}
  .toc-list{display:flex;gap:8px;overflow-x:auto;padding-bottom:6px;}
  .toc-list li{margin:0;flex:0 0 auto;}
  .toc-list a{white-space:nowrap;border-left:none;border-bottom:2px solid transparent;padding:8px 10px;}
  .toc-list a.is-active{border-left:none;border-bottom-color:var(--c-accent);}
  .toc-note{display:none;}
  .layout-wrap{padding-top:28px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
}

/* roulang page: article */
:root{
  --brand:#2A2A6E;
  --brand-deep:#1C1B4B;
  --accent:#FF7A2F;
  --accent-deep:#E9651C;
  --mint:#2FB6A8;
  --mint-deep:#1F8478;
  --sand:#F7F5F1;
  --surface:#FBF9F6;
  --card:#FFFFFF;
  --dark:#191833;
  --ink:#22213A;
  --ink-2:#5F5D78;
  --ink-3:#8A879C;
  --white:#F5F4F8;
  --line:#E7E3DB;
  --line-dark:#302F58;
  --r-card:16px;
  --r-img:18px;
  --r-btn:10px;
  --sh-1:0 2px 4px rgba(34,33,58,.04),0 12px 28px rgba(34,33,58,.08);
  --sh-2:0 16px 34px rgba(34,33,58,.12);
  --sec:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  background:var(--sand);
  color:var(--ink);
  font-size:17px;
  line-height:1.9;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;background:none}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit;cursor:pointer}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em}
p{margin:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:var(--surface);
  border-bottom:1px solid transparent;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 8px 22px rgba(34,33,58,.07)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:64px}
.logo{display:inline-flex;align-items:baseline;gap:2px;font-size:19px;font-weight:800;color:var(--brand);letter-spacing:-.01em;white-space:nowrap}
.logo span{font-weight:500;font-size:17px;color:var(--ink-2)}
.main-nav ul{display:flex;align-items:center;gap:26px}
.main-nav a{position:relative;display:inline-block;padding:6px 0;font-size:15.5px;color:var(--ink-2);transition:color .15s ease,transform .15s ease}
.main-nav a:hover{color:var(--brand);transform:translateX(1px)}
.main-nav a.active{color:var(--brand);font-weight:600}
.main-nav a.active::after{content:"";position:absolute;left:0;right:0;bottom:-3px;height:2px;border-radius:2px;background:var(--accent)}
.header-actions{display:flex;align-items:center;gap:12px}
.icon-btn{
  width:38px;height:38px;border-radius:50%;
  border:1px solid var(--line);background:#fff;color:var(--brand);
  display:inline-flex;align-items:center;justify-content:center;
  transition:border-color .18s ease,background .18s ease,transform .18s ease;
}
.icon-btn:hover{border-color:var(--brand);background:rgba(42,42,110,.06);transform:translateY(-1px)}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:10px;
  border:1px solid var(--line);background:#fff;color:var(--brand);
  align-items:center;justify-content:center;font-size:16px;
}
.nav-toggle:hover{border-color:var(--brand);background:rgba(42,42,110,.06)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1.5px solid transparent;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease;
  white-space:nowrap;cursor:pointer;
}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-deep);color:#fff;transform:translateY(-1px)}
.btn-ghost{border-color:var(--brand);color:var(--brand);background:transparent}
.btn-ghost:hover{background:rgba(42,42,110,.08);color:var(--brand);transform:translateY(-1px)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-weight:600;font-size:15px}
.link-arrow i{transition:transform .18s ease}
.link-arrow:hover i{transform:translateX(3px)}

/* ============ 移动抽屉 ============ */
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(88vw,380px);
  background:var(--brand-deep);z-index:120;
  transform:translateX(102%);transition:transform .28s ease;
  display:flex;flex-direction:column;
}
.mobile-drawer.open{transform:translateX(0)}
.drawer-mask{position:fixed;inset:0;background:rgba(25,24,51,.5);z-index:110;opacity:0;visibility:hidden;transition:.25s ease}
.drawer-mask.show{opacity:1;visibility:visible}
.drawer-head{display:flex;align-items:center;justify-content:space-between;height:56px;padding:0 20px;border-bottom:1px solid var(--line-dark)}
.drawer-head .logo{color:#fff}
.drawer-head .logo span{color:#A9A7C2}
.drawer-close{width:36px;height:36px;border-radius:10px;border:1px solid var(--line-dark);background:transparent;color:#fff;display:inline-flex;align-items:center;justify-content:center}
.drawer-links{flex:1;overflow-y:auto;padding:6px 0}
.drawer-links a{display:flex;align-items:center;height:52px;padding:0 20px;color:#D9D7E6;font-size:16px;border-bottom:1px solid rgba(255,255,255,.06);transition:background .18s ease,color .18s ease}
.drawer-links a:hover{background:rgba(255,255,255,.05);color:#fff}
.drawer-links a.active{color:#fff;font-weight:600;box-shadow:inset 3px 0 0 var(--accent)}
.drawer-foot{padding:16px 20px 26px;border-top:1px solid var(--line-dark)}
.drawer-foot .btn{width:100%}

/* ============ 文章头部 ============ */
.article-head{position:relative;overflow:hidden;padding:46px 0 40px;background:linear-gradient(180deg,var(--surface) 0%,var(--sand) 100%)}
.article-head::after{
  content:"";position:absolute;right:-140px;bottom:-200px;width:460px;height:460px;
  border:1px solid rgba(42,42,110,.12);border-radius:50%;pointer-events:none;
}
.article-head .container{position:relative;z-index:1}
.head-inner{max-width:760px;margin:0 auto}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--ink-3);margin-bottom:20px}
.crumbs li{display:flex;align-items:center;gap:8px;min-width:0}
.crumbs li+li::before{content:"/";color:#C9C5BB}
.crumbs a{color:var(--ink-2);transition:color .16s ease}
.crumbs a:hover{color:var(--brand)}
.crumbs .current{color:var(--ink-3);max-width:280px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.tag{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;font-size:13px;font-weight:600;background:rgba(47,182,168,.13);color:var(--mint-deep);white-space:nowrap}
.tag-brand{background:rgba(42,42,110,.09);color:var(--brand)}
.article-title{font-size:40px;line-height:1.28;font-weight:800;color:var(--brand-deep);margin:16px 0 18px}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 24px;margin-top:6px;padding-top:16px;border-top:1px solid var(--line);font-size:14px;color:var(--ink-3)}
.article-meta span{display:inline-flex;align-items:center}
.article-meta i{color:var(--mint);margin-right:7px;font-size:13px}
.accent-rule{display:flex;gap:6px;margin-bottom:22px}
.accent-rule i{display:block;height:4px;width:34px;border-radius:2px;background:var(--accent)}
.accent-rule i+i{width:18px;background:var(--mint)}

/* ============ 正文 ============ */
.article-main{padding:12px 0 64px}
.article-body{max-width:760px;margin:0 auto}
.prose{font-size:17px;line-height:1.95;color:var(--ink)}
.prose > *:first-child{margin-top:0}
.prose p{margin:0 0 1.1em}
.prose h2{font-size:22px;line-height:1.5;font-weight:700;color:var(--brand-deep);margin:40px 0 16px}
.prose h3{font-size:18px;line-height:1.6;font-weight:700;color:var(--brand);margin:28px 0 12px}
.prose h4{font-size:16.5px;line-height:1.6;font-weight:700;color:var(--brand);margin:22px 0 10px}
.prose ul{margin:0 0 1.2em}
.prose ul li{position:relative;padding-left:22px;margin-bottom:10px;line-height:1.9}
.prose ul li::before{content:"";position:absolute;left:4px;top:.82em;width:6px;height:6px;border-radius:50%;background:var(--mint)}
.prose ol{margin:0 0 1.2em;padding-left:24px;list-style:decimal}
.prose ol li{margin-bottom:10px;line-height:1.9;padding-left:2px}
.prose blockquote{margin:24px 0;padding:16px 22px;border-left:4px solid var(--brand);background:#F1EFEA;border-radius:0 12px 12px 0;color:var(--ink-2)}
.prose blockquote p:last-child{margin-bottom:0}
.prose img{border-radius:14px;margin:12px auto}
.prose figure{margin:24px 0}
.prose figcaption{font-size:13.5px;color:var(--ink-3);text-align:center;margin-top:10px}
.prose a{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
.prose a:hover{color:var(--accent)}
.prose strong{color:var(--brand-deep)}
.prose hr{border:0;border-top:1px solid var(--line);margin:32px 0}
.prose table{width:100%;border-collapse:collapse;margin:22px 0;font-size:15.5px}
.prose th,.prose td{border:1px solid var(--line);padding:12px 14px;text-align:left}
.prose th{background:#F1EFEA;color:var(--brand-deep);font-weight:600}
.prose code{background:#F1EFEA;border-radius:6px;padding:2px 6px;font-size:15px;color:var(--brand)}

.article-foot{max-width:760px;margin:34px auto 0;padding-top:26px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;align-items:center;gap:10px}
.article-foot .foot-label{font-size:14px;color:var(--ink-3);margin-right:4px}
.back-row{max-width:760px;margin:28px auto 0;display:flex;flex-wrap:wrap;gap:12px;align-items:center}

/* ============ 空态 ============ */
.empty-state{max-width:760px;margin:0 auto;text-align:center;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);padding:52px 32px}
.empty-art{width:240px;height:160px;margin:0 auto 20px;border-radius:14px;background:var(--sand);display:flex;align-items:center;justify-content:center;color:var(--ink-3);font-size:34px}
.empty-state h2{font-size:22px;color:var(--brand-deep);margin-bottom:10px}
.empty-state p{font-size:15.5px;color:var(--ink-2);margin-bottom:22px}

/* ============ 相关推荐 ============ */
.related{background:var(--surface);border-top:1px solid var(--line);padding:72px 0}
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:32px}
.sec-head h2{font-size:26px;line-height:1.4;color:var(--brand-deep)}
.sec-head p{font-size:15px;color:var(--ink-2);margin-top:6px}
.rel-card{display:flex;flex-direction:column;height:100%;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#DAD5CA}
.rel-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--sand)}
.rel-thumb img{width:100%;height:100%;object-fit:cover;object-position:center 35%}
.rel-body{padding:18px 20px 22px;display:flex;flex-direction:column;flex:1}
.rel-body h3{font-size:17px;line-height:1.55;color:var(--brand-deep);margin-bottom:10px;transition:color .18s ease}
.rel-card:hover .rel-body h3{color:var(--brand)}
.rel-body p{font-size:14.5px;line-height:1.75;color:var(--ink-2);margin-bottom:16px}
.rel-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:13px;color:var(--ink-3)}
.related .cell{margin-bottom:24px}

/* ============ CTA ============ */
.cta-band{position:relative;overflow:hidden;background:var(--dark);color:var(--white);padding:64px 0}
.cta-band::after{
  content:"";position:absolute;left:-160px;top:-200px;width:460px;height:460px;
  border:1px solid rgba(255,255,255,.10);border-radius:50%;pointer-events:none;
}
.cta-band .container{position:relative;z-index:1}
.cta-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:26px}
.cta-inner h2{font-size:26px;line-height:1.45;color:#fff;margin-bottom:10px}
.cta-inner p{font-size:15px;line-height:1.85;color:#B9B7CC;max-width:600px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
.btn-onDark{border-color:rgba(255,255,255,.4);color:#fff;background:transparent}
.btn-onDark:hover{background:rgba(255,255,255,.12);color:#fff}

/* ============ 页脚 ============ */
.site-footer{position:relative;overflow:hidden;background:var(--brand-deep);color:#C8C6DB;padding:64px 0 0}
.site-footer::after{
  content:"";position:absolute;right:-180px;bottom:-220px;width:480px;height:480px;
  border:1px solid rgba(255,255,255,.07);border-radius:50%;pointer-events:none;
}
.site-footer .container{position:relative;z-index:1}
.footer-grid{margin-bottom:8px}
.site-footer .cell{padding-bottom:26px}
.footer-logo{font-size:20px;font-weight:800;color:#fff;margin-bottom:14px}
.footer-logo span{font-weight:400;color:#A9A7C2}
.footer-desc{font-size:14.5px;line-height:1.9;color:#9E9CB6;max-width:340px}
.footer-col h4{font-size:14px;color:#fff;margin-bottom:16px;font-weight:700}
.footer-col ul li{margin-bottom:10px}
.footer-col a{display:inline-block;font-size:15px;color:#9E9CB6;transition:color .16s ease,transform .16s ease}
.footer-col a:hover{color:#fff;transform:translateX(-2px)}
.footer-col p{font-size:14.5px;color:#9E9CB6;line-height:1.85;margin-bottom:8px}
.footer-bottom{border-top:1px solid var(--line-dark);margin-top:12px;padding:20px 0 24px}
.footer-bottom .container{display:flex;flex-wrap:wrap;gap:8px;justify-content:space-between;font-size:13.5px;color:#8A88A6}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  :root{--sec:72px}
  .container{padding:0 24px}
  .main-nav ul{gap:18px}
  .main-nav a{font-size:14.5px}
  .header-inner{gap:14px}
  .article-title{font-size:34px}
}
@media (max-width:900px){
  .main-nav{display:none}
  .nav-toggle{display:inline-flex}
  .header-actions .btn{display:none}
  .header-inner{height:56px}
}
@media (max-width:768px){
  :root{--sec:56px}
  .article-head{padding:32px 0 28px}
  .article-title{font-size:28px;line-height:1.36}
  .prose{font-size:16.5px}
  .prose h2{font-size:20px;margin-top:32px}
  .prose h3{font-size:17px}
  .related{padding:52px 0}
  .cta-band{padding:48px 0}
  .cta-inner h2{font-size:22px}
  .sec-head h2{font-size:22px}
}
@media (max-width:640px){
  .container{padding:0 20px}
  .article-title{font-size:25px}
  .head-inner{max-width:100%}
  .empty-state{padding:40px 20px}
  .empty-art{width:100%;max-width:240px}
  .footer-bottom .container{flex-direction:column;gap:6px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}

/* roulang page: category2 */
/* ===================== 设计变量 ===================== */
:root{
  --c-primary:#2A2A6E;
  --c-primary-dark:#1C1B4B;
  --c-accent:#FF7A2F;
  --c-accent-dark:#E8641C;
  --c-teal:#2FB6A8;
  --c-bg:#F7F5F1;
  --c-surface:#FFFFFF;
  --c-dark:#191833;
  --c-text:#22213A;
  --c-text-2:#5F5D78;
  --c-text-3:#8A879C;
  --c-inv:#F5F4F8;
  --c-line:#E7E3DB;
  --c-line-dark:#302F58;
  --r-card:16px;
  --r-img:18px;
  --r-btn:10px;
  --sh-1:0 2px 4px rgba(34,33,58,.04),0 12px 28px rgba(34,33,58,.08);
  --sh-2:0 16px 34px rgba(34,33,58,.12);
  --nav-h:64px;
  --sect-y:96px;
  --gutter:32px;
  --ff:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
}
@media (max-width:1024px){:root{--sect-y:72px;--gutter:24px}}
@media (max-width:640px){:root{--sect-y:56px;--gutter:20px;--nav-h:56px}}

/* ===================== 基础 reset ===================== */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--ff);
  font-size:17px;
  line-height:1.9;
  color:var(--c-text);
  background:var(--c-bg);
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.35;letter-spacing:-0.01em;color:var(--c-text);}
p{margin:0;}
img{max-width:100%;display:block;border:0;background:var(--c-bg);}
ul,ol{margin:0;padding:0;list-style:none;}
a{color:var(--c-primary);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--c-accent);}
button{font-family:inherit;font-size:inherit;border:0;background:none;cursor:pointer;color:inherit;}
input,textarea,select{font-family:inherit;font-size:16px;color:var(--c-text);}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px;}
::selection{background:rgba(255,122,47,.22);}

/* ===================== 容器 ===================== */
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:var(--gutter);padding-right:var(--gutter);}

/* ===================== 导航 ===================== */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--c-bg);
  border-bottom:1px solid transparent;
  transition:box-shadow .22s ease,border-color .22s ease,background .22s ease;
}
.site-header.is-scrolled{
  border-bottom-color:var(--c-line);
  box-shadow:0 4px 18px rgba(34,33,58,.07);
  background:rgba(247,245,241,.98);
}
.header-inner{display:flex;align-items:center;height:var(--nav-h);gap:36px;}
.brand{
  display:inline-flex;align-items:baseline;
  font-size:20px;font-weight:700;color:var(--c-text);
  letter-spacing:-0.01em;white-space:nowrap;flex:none;
}
.brand span{color:var(--c-primary);font-weight:500;margin-left:2px;}
.brand:hover{color:var(--c-text);}
.main-nav{display:block;}
.main-nav ul{display:flex;align-items:center;gap:30px;}
.main-nav a{
  position:relative;display:inline-block;
  font-size:15px;color:var(--c-text-2);padding:4px 0;
  transition:color .12s ease,transform .12s ease;
}
.main-nav a:hover{color:var(--c-primary);transform:translateX(1px);}
.main-nav a.active{color:var(--c-primary);font-weight:600;}
.main-nav a.active::after{
  content:"";position:absolute;left:0;right:0;bottom:-3px;height:2px;
  background:var(--c-accent);border-radius:2px;
}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:14px;}
.icon-btn{
  width:40px;height:40px;border-radius:50%;
  display:grid;place-items:center;
  color:var(--c-text-2);border:1px solid var(--c-line);
  background:var(--c-surface);
  transition:color .18s ease,border-color .18s ease,transform .18s ease;
}
.icon-btn:hover{color:var(--c-primary);border-color:rgba(42,42,110,.4);transform:translateY(-1px);}
.hamburger{display:none;width:44px;height:44px;flex-direction:column;justify-content:center;align-items:center;gap:5px;border-radius:10px;}
.hamburger span{display:block;width:22px;height:2px;background:var(--c-text);border-radius:2px;transition:transform .2s ease;}
.hamburger:hover span{background:var(--c-primary);}

/* ===================== 按钮 ===================== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;
  border:1.5px solid transparent;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--c-accent);color:#fff;box-shadow:0 6px 16px rgba(255,122,47,.24);}
.btn-primary:hover{background:var(--c-accent-dark);color:#fff;transform:translateY(-1px);}
.btn-ghost{background:transparent;border-color:var(--c-primary);color:var(--c-primary);}
.btn-ghost:hover{background:rgba(42,42,110,.08);color:var(--c-primary);transform:translateY(-1px);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-block{width:100%;}

/* ===================== 标签 / 小标题 ===================== */
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.02em;
  color:var(--c-primary);background:rgba(42,42,110,.08);
  border-radius:999px;padding:6px 14px;margin-bottom:20px;
}
.eyebrow i{color:var(--c-teal);font-size:12px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;color:var(--c-text-2);
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:999px;padding:7px 15px;
}
.tag em{font-style:normal;font-weight:700;color:var(--c-accent);font-variant-numeric:tabular-nums;}
.accent-rule{display:flex;width:76px;height:4px;margin-bottom:28px;border-radius:2px;overflow:hidden;}
.accent-rule::before{content:"";flex:1;background:var(--c-accent);}
.accent-rule::after{content:"";flex:1;background:var(--c-teal);}

/* ===================== Hero ===================== */
.hero{padding:56px 0 88px;position:relative;overflow:hidden;}
.hero::after{
  content:"";position:absolute;right:-120px;bottom:-160px;
  width:520px;height:520px;border-radius:50%;
  border:1px solid rgba(42,42,110,.12);
  pointer-events:none;
}
.hero-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:56px;align-items:center;position:relative;z-index:1;}
.hero h1{font-size:40px;line-height:1.28;margin-bottom:20px;}
.hero-sub{font-size:17px;line-height:1.9;color:var(--c-text-2);max-width:34em;margin-bottom:32px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:32px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:12px;}
.hero-visual{position:relative;}
.hero-visual::before{
  content:"";position:absolute;left:-22px;bottom:-22px;
  width:58%;height:58%;border-radius:32px;
  background:rgba(42,42,110,.08);
}
.hero-visual img{
  position:relative;z-index:1;width:100%;aspect-ratio:4/3;
  object-fit:cover;border-radius:var(--r-img);box-shadow:var(--sh-1);
}

/* ===================== 板块 ===================== */
.section{padding:var(--sect-y) 0;}
.section-alt{background:var(--c-surface);}
.section-head{max-width:760px;margin-bottom:48px;}
.section-head h2{font-size:30px;line-height:1.38;margin-bottom:16px;}
.section-lead{font-size:16px;line-height:1.9;color:var(--c-text-2);}
.section-dark{background:var(--c-dark);color:var(--c-inv);}
.section-dark h2,.section-dark h3{color:#fff;}
.section-dark .section-lead{color:rgba(245,244,248,.7);}

/* ===================== 内容卡片（不等宽 2:1 交替） ===================== */
.card-rows{display:grid;gap:24px;}
.card-row{display:grid;gap:24px;align-items:stretch;}
.card-row--a{grid-template-columns:2fr 1fr;}
.card-row--b{grid-template-columns:1fr 2fr;}
.c-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:32px;display:flex;flex-direction:column;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.c-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(42,42,110,.18);}
.c-num{
  font-variant-numeric:tabular-nums;font-size:13px;font-weight:700;
  color:var(--c-accent);letter-spacing:.12em;margin-bottom:14px;display:block;
}
.c-card h3{font-size:22px;line-height:1.4;margin-bottom:12px;}
.c-card p{font-size:15px;line-height:1.85;color:var(--c-text-2);margin-bottom:18px;}
.c-list{margin-bottom:22px;}
.c-list li{
  position:relative;padding-left:20px;font-size:15px;line-height:1.85;
  color:var(--c-text-2);margin-bottom:8px;
}
.c-list li::before{
  content:"";position:absolute;left:0;top:12px;
  width:8px;height:8px;border-radius:50%;background:var(--c-teal);
}
.link-arrow{
  margin-top:auto;display:inline-flex;align-items:center;gap:8px;
  font-size:15px;font-weight:600;color:var(--c-primary);
}
.link-arrow i{font-size:13px;transition:transform .18s ease;}
.link-arrow:hover i{transform:translateX(3px);}

/* ===================== 适用场景 ===================== */
.scene-grid{display:grid;grid-template-columns:.92fr 1.08fr;gap:48px;align-items:center;}
.scene-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-img);box-shadow:var(--sh-1);}
.scene-list{display:grid;gap:4px;}
.scene-item{
  display:flex;gap:20px;padding:22px 0;
  border-bottom:1px solid var(--c-line);
}
.scene-item:last-child{border-bottom:0;}
.scene-no{
  flex:none;font-variant-numeric:tabular-nums;font-size:14px;font-weight:700;
  color:var(--c-primary);background:rgba(42,42,110,.08);
  width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
}
.scene-item h3{font-size:18px;margin-bottom:6px;}
.scene-item p{font-size:15px;line-height:1.8;color:var(--c-text-2);}

/* ===================== 流程 ===================== */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.flow-step{
  position:relative;background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:28px 24px;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.flow-step:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(42,42,110,.18);}
.flow-step:not(:last-child)::after{
  content:"\f061";font-family:"Font Awesome 6 Free";font-weight:900;
  position:absolute;right:-18px;top:50%;transform:translateY(-50%);
  color:var(--c-teal);font-size:14px;
}
.step-num{
  width:36px;height:36px;border-radius:11px;display:grid;place-items:center;
  background:var(--c-primary);color:#fff;font-size:15px;font-weight:700;
  font-variant-numeric:tabular-nums;margin-bottom:18px;
}
.step-num.is-accent{background:var(--c-accent);}
.flow-step h3{font-size:18px;margin-bottom:10px;}
.flow-step p{font-size:15px;line-height:1.8;color:var(--c-text-2);}

/* ===================== 数据区 ===================== */
.stats{display:grid;grid-template-columns:repeat(4,1fr);}
.stats .stat{padding:8px 28px;border-right:1px solid var(--c-line-dark);}
.stats .stat:first-child{padding-left:0;}
.stats .stat:last-child{border-right:0;}
.stat .value{
  font-size:46px;font-weight:700;line-height:1;color:#fff;
  font-variant-numeric:tabular-nums;letter-spacing:-0.02em;
}
.stat .value em{font-style:normal;font-size:16px;font-weight:600;color:var(--c-accent);margin-left:8px;}
.stat .label{margin-top:14px;font-size:15px;line-height:1.7;color:rgba(245,244,248,.68);}

/* ===================== FAQ ===================== */
.faq{max-width:820px;margin:0 auto;}
.faq-item{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:14px;
  margin-bottom:14px;overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item.open{border-color:rgba(42,42,110,.22);box-shadow:var(--sh-1);}
.faq-q{
  width:100%;display:flex;align-items:flex-start;gap:16px;
  padding:22px 24px;text-align:left;font-size:17px;font-weight:600;
  line-height:1.6;color:var(--c-text);
}
.faq-q .no{
  flex:none;font-variant-numeric:tabular-nums;color:var(--c-accent);
  font-weight:700;font-size:15px;padding-top:2px;
}
.faq-q .chev{margin-left:auto;flex:none;color:var(--c-text-3);font-size:14px;padding-top:5px;transition:transform .22s ease;}
.faq-item.open .faq-q .chev{transform:rotate(180deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease;border-left:3px solid transparent;}
.faq-item.open .faq-a{border-left-color:var(--c-accent);}
.faq-a p{
  padding:0 24px 24px 58px;font-size:15px;line-height:1.95;color:var(--c-text-2);
}

/* ===================== CTA 条 ===================== */
.cta-bar{
  background:var(--c-primary-dark);border-radius:22px;
  padding:44px 48px;display:flex;align-items:center;justify-content:space-between;
  gap:36px;position:relative;overflow:hidden;
}
.cta-bar::after{
  content:"";position:absolute;right:-90px;top:-90px;width:280px;height:280px;
  border-radius:50%;border:1px solid rgba(245,244,248,.12);
}
.cta-bar h2{font-size:26px;color:#fff;margin-bottom:10px;position:relative;z-index:1;}
.cta-bar p{font-size:15px;line-height:1.8;color:rgba(245,244,248,.72);max-width:46em;position:relative;z-index:1;}
.cta-bar .btn{position:relative;z-index:1;flex:none;}

/* ===================== 页脚 ===================== */
.site-footer{background:var(--c-primary-dark);color:rgba(245,244,248,.7);padding-top:76px;margin-top:var(--sect-y);position:relative;overflow:hidden;}
.site-footer::after{
  content:"";position:absolute;left:-140px;bottom:-180px;width:420px;height:420px;
  border-radius:50%;border:1px solid rgba(245,244,248,.08);pointer-events:none;
}
.footer-grid{row-gap:40px;position:relative;z-index:1;}
.footer-logo{font-size:20px;font-weight:700;color:#fff;margin-bottom:16px;}
.footer-logo span{color:var(--c-accent);font-weight:500;margin-left:2px;}
.footer-desc{font-size:15px;line-height:1.9;color:rgba(245,244,248,.64);max-width:340px;margin:0;}
.footer-col h4{font-size:14px;color:#fff;margin:0 0 18px;letter-spacing:.02em;font-weight:600;}
.footer-col ul li{margin-bottom:10px;}
.footer-col a{
  display:inline-block;font-size:15px;color:rgba(245,244,248,.68);
  transition:color .18s ease,transform .18s ease;
}
.footer-col a:hover{color:#fff;transform:translateX(-2px);}
.footer-col p{font-size:15px;line-height:1.8;color:rgba(245,244,248,.68);margin:0 0 8px;}
.footer-bottom{border-top:1px solid var(--c-line-dark);margin-top:60px;padding:22px 0;position:relative;z-index:1;}
.footer-bottom .container{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;}
.footer-bottom span{font-size:14px;color:rgba(245,244,248,.52);}

/* ===================== 移动抽屉 ===================== */
.drawer{
  position:fixed;inset:0;z-index:90;background:var(--c-primary-dark);
  transform:translateX(100%);transition:transform .3s ease;
  display:flex;flex-direction:column;
  padding:20px 24px 28px;overflow-y:auto;
}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;height:var(--nav-h);flex:none;}
.drawer-brand{font-size:19px;font-weight:700;color:#fff;}
.drawer-brand span{color:var(--c-accent);font-weight:500;}
.drawer-close{
  width:42px;height:42px;border-radius:12px;display:grid;place-items:center;
  color:var(--c-inv);border:1px solid var(--c-line-dark);font-size:16px;
}
.drawer-nav{margin-top:24px;flex:1;}
.drawer-nav li{border-bottom:1px solid rgba(48,47,88,.7);}
.drawer-nav a{
  display:flex;align-items:center;height:52px;font-size:16px;
  color:rgba(245,244,248,.82);
}
.drawer-nav a.active{color:#fff;font-weight:600;}
.drawer-nav a.active::after{
  content:"";width:16px;height:2px;background:var(--c-accent);
  margin-left:10px;border-radius:2px;
}
.drawer-cta{margin-top:28px;flex:none;}

/* ===================== 响应式 ===================== */
@media (max-width:1024px){
  .header-inner{gap:24px;}
  .main-nav{display:none;}
  .hamburger{display:flex;}
  .hero{padding:40px 0 72px;}
  .hero-grid{grid-template-columns:6fr 4fr;gap:36px;}
  .hero h1{font-size:32px;}
  .hero-visual::before{left:-14px;bottom:-14px;}
  .section-head{margin-bottom:40px;}
  .section-head h2{font-size:26px;}
  .card-row--a,.card-row--b{grid-template-columns:1fr 1fr;}
  .scene-grid{grid-template-columns:1fr;gap:36px;}
  .flow{grid-template-columns:repeat(2,1fr);}
  .flow-step:not(:last-child)::after{display:none;}
  .stats{grid-template-columns:repeat(2,1fr);row-gap:44px;}
  .stats .stat{padding:0 20px;}
  .stats .stat:nth-child(2n){border-right:0;}
  .stats .stat:nth-child(2n+1){padding-left:0;}
  .cta-bar{flex-direction:column;align-items:flex-start;padding:36px 32px;gap:24px;}
  .cta-bar h2{font-size:23px;}
}
@media (max-width:900px){
  .header-actions .btn-sm{display:none;}
}
@media (max-width:640px){
  body{font-size:16px;}
  .hero{padding:28px 0 56px;}
  .hero-grid{grid-template-columns:1fr;gap:32px;}
  .hero h1{font-size:27px;line-height:1.36;}
  .hero-sub{font-size:16px;margin-bottom:26px;}
  .hero-cta{gap:12px;}
  .hero-cta .btn{width:100%;}
  .hero-tags{gap:10px;}
  .tag{font-size:12px;padding:6px 13px;}
  .hero-visual{order:2;}
  .card-row--a,.card-row--b{grid-template-columns:1fr;}
  .c-card{padding:26px 22px;}
  .c-card h3{font-size:20px;}
  .flow{grid-template-columns:1fr;}
  .stats{grid-template-columns:1fr;row-gap:36px;}
  .stats .stat{padding:0;border-right:0;}
  .stat .value{font-size:38px;}
  .faq-q{font-size:16px;padding:20px 18px;gap:12px;}
  .faq-a p{padding:0 18px 20px 46px;}
  .cta-bar{padding:30px 22px;border-radius:18px;}
  .cta-bar h2{font-size:21px;}
  .cta-bar .btn{width:100%;}
  .footer-bottom .container{justify-content:flex-start;}
  .section-head h2{font-size:23px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;}
  html{scroll-behavior:auto;}
}