/* roulang page: index */
:root{
  --blue:#1656D6;
  --blue-dark:#0E3FA8;
  --blue-light:#E9F1FF;
  --orange:#FF7A2F;
  --orange-light:#FFF0E6;
  --teal:#00A79D;
  --ink:#0D1B2A;
  --text:#46586E;
  --muted:#7B8CA3;
  --line:#E4EAF3;
  --page:#F6F8FC;
  --card:#FFFFFF;
  --deep:#0A1A31;
  --danger:#D64545;
  --sh-1:0 1px 2px rgba(13,27,42,.04),0 10px 24px -16px rgba(13,27,42,.14);
  --sh-2:0 16px 36px -18px rgba(22,86,214,.28);
  --r-card:14px;
  --r-lg:22px;
  --r-btn:10px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--page);
  overflow-x:hidden;
}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;line-height:1.25}
h1{font-size:clamp(32px,4.4vw,54px);line-height:1.18}
h2{font-size:clamp(24px,3vw,36px)}
h3{font-size:20px;line-height:1.4}
h4{font-size:17px}
p{margin:0 0 1.2em}
p:last-child{margin-bottom:0}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--blue);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section-tight{padding:72px 0}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(255,255,255,.55);
  -webkit-backdrop-filter:blur(16px) saturate(150%);
  backdrop-filter:blur(16px) saturate(150%);
  border-bottom:1px solid rgba(255,255,255,.6);
  box-shadow:0 8px 24px -16px rgba(13,27,42,.25);
  transition:background .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header.is-stuck{
  background:rgba(255,255,255,.94);
  border-bottom-color:var(--line);
  box-shadow:0 10px 30px -20px rgba(13,27,42,.4);
}
.header-inner{display:flex;align-items:center;gap:24px;height:72px}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0}
.brand-mark{
  width:38px;height:38px;border-radius:11px;flex-shrink:0;
  background:linear-gradient(135deg,var(--blue),#2f74f0);
  display:grid;place-items:center;color:#fff;
  box-shadow:0 10px 20px -12px rgba(22,86,214,.8);
}
.brand-mark svg{width:20px;height:20px}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:17px;color:var(--ink);font-weight:700}
.brand-text em{font-style:normal;font-size:11px;color:var(--muted);letter-spacing:.18em}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.main-nav a{
  position:relative;padding:10px 14px;font-size:15px;color:var(--text);
  border-radius:8px;white-space:nowrap;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.main-nav a:hover{color:var(--blue);background:rgba(22,86,214,.06)}
.main-nav a.active{color:var(--blue);font-weight:600}
.main-nav a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:var(--blue);border-radius:2px;
}
.header-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.icon-btn{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
  background:rgba(255,255,255,.72);display:grid;place-items:center;color:var(--text);
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease),transform .2s var(--ease);
}
.icon-btn:hover{color:var(--blue);border-color:rgba(22,86,214,.4);background:var(--blue-light);transform:translateY(-1px)}
.burger{display:none}
.burger span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;margin:4px auto;transition:.2s var(--ease)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.btn svg{width:16px;height:16px}
.btn-primary{background:var(--blue);color:#fff;box-shadow:var(--sh-2)}
.btn-primary:hover{background:var(--blue-dark);transform:translateY(-2px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:#fff;color:var(--blue);border-color:rgba(22,86,214,.4)}
.btn-ghost:hover{background:var(--blue-light);transform:translateY(-2px)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.btn[disabled]{opacity:.4;cursor:not-allowed;transform:none!important}

.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--blue);font-weight:600;font-size:15px}
.link-arrow svg{width:15px;height:15px;transition:transform .2s var(--ease)}
.link-arrow:hover{text-decoration:underline}
.link-arrow:hover svg{transform:translateX(2px)}

/* ---------- generic ---------- */
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--blue);margin-bottom:14px}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--orange);border-radius:2px}
.section-head{max-width:760px}
.section-head p{margin-top:14px;font-size:16px;color:var(--text)}
.section-bar{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap}
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  font-size:12px;font-weight:600;background:var(--blue-light);color:var(--blue);
  white-space:nowrap;
}
.badge-orange{background:var(--orange-light);color:#C4551A}
.badge-plain{background:#F0F3F8;color:var(--muted)}

/* ---------- hero ---------- */
.hero{
  position:relative;padding:150px 0 96px;overflow:hidden;
  background:url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
}
.hero::before{
  content:"";position:absolute;inset:0;z-index:0;
  background:linear-gradient(100deg,rgba(255,255,255,.97) 0%,rgba(255,255,255,.93) 46%,rgba(246,248,252,.74) 100%);
}
.hero::after{
  content:"";position:absolute;inset:0;z-index:0;pointer-events:none;
  background-image:linear-gradient(rgba(22,86,214,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(22,86,214,.05) 1px,transparent 1px);
  background-size:48px 48px;
}
.hero>.container{position:relative;z-index:1}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center}
.pill{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;
  border-radius:999px;background:var(--blue-light);color:var(--blue);font-size:13px;font-weight:600;
}
.pill .dot{width:6px;height:6px;border-radius:50%;background:var(--orange)}
.hero-title{margin:20px 0 18px;max-width:620px}
.hero-sub{font-size:17px;color:var(--text);max-width:540px;margin-bottom:28px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:34px}
.trust-row{display:flex;gap:26px;flex-wrap:wrap;border-top:1px solid var(--line);padding-top:22px}
.trust-item{display:flex;align-items:center;gap:9px;font-size:14px;color:var(--text)}
.trust-item svg{width:17px;height:17px;color:var(--teal);flex-shrink:0}
.hero-visual{position:relative}
.hero-visual .shot{
  width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:24px;
  box-shadow:0 34px 64px -34px rgba(13,27,42,.5);
}
.float-card{
  position:absolute;left:-26px;bottom:-28px;background:#fff;border:1px solid var(--line);
  border-radius:16px;padding:16px 20px;box-shadow:var(--sh-1);
  display:flex;align-items:center;gap:14px;
}
.float-card .fc-num{font-size:26px;font-weight:700;color:var(--blue);font-variant-numeric:tabular-nums;line-height:1}
.float-card .fc-txt{font-size:13px;color:var(--muted);line-height:1.5}

/* ---------- pain ---------- */
.pain-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin-top:44px}
.pain-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.pain-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(22,86,214,.25)}
.pain-num{font-size:44px;font-weight:700;color:var(--blue-light);line-height:1;font-variant-numeric:tabular-nums}
.pain-card h3{font-size:18px;margin:12px 0 8px}
.pain-card p{font-size:14px;color:var(--muted);margin:0;line-height:1.75}

/* ---------- solution ---------- */
.solution-grid{display:grid;grid-template-columns:2fr 1fr;gap:24px;margin-top:44px;align-items:stretch}
.solution-left{display:grid;gap:24px}
.solution-card{
  display:grid;grid-template-columns:1fr 190px;gap:26px;align-items:center;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.solution-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(22,86,214,.25)}
.solution-card h3{margin:12px 0 12px;font-size:20px}
.tick-list{margin:0 0 18px}
.tick-list li{position:relative;padding-left:22px;font-size:14.5px;color:var(--text);line-height:1.9}
.tick-list li::before{
  content:"";position:absolute;left:0;top:11px;width:8px;height:8px;border-radius:50%;
  background:var(--blue-light);border:2px solid var(--blue);
}
.solution-card .shot{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:12px}
.steps-card{
  background:var(--blue-light);border:1px solid rgba(22,86,214,.16);border-radius:var(--r-card);
  padding:28px;display:flex;flex-direction:column;
}
.steps-card h3{font-size:19px;margin-bottom:6px}
.steps-card>p{font-size:14px;color:var(--text);margin-bottom:22px}
.steps{margin-bottom:22px}
.steps li{position:relative;padding:0 0 22px 36px}
.steps li::before{content:"";position:absolute;left:11px;top:26px;bottom:2px;width:1px;background:rgba(22,86,214,.28)}
.steps li:last-child{padding-bottom:0}
.steps li:last-child::before{display:none}
.step-dot{
  position:absolute;left:0;top:2px;width:23px;height:23px;border-radius:50%;
  background:#fff;border:1px solid rgba(22,86,214,.4);color:var(--blue);
  font-size:12px;font-weight:700;display:grid;place-items:center;
}
.steps strong{display:block;font-size:15px;color:var(--ink);font-weight:600;line-height:1.5}
.steps span{font-size:13px;color:var(--muted)}
.steps-card .link-arrow{margin-top:auto}

/* ---------- stats ---------- */
.stats-band{
  background:var(--deep);border-radius:var(--r-lg);padding:48px 40px;
  display:grid;grid-template-columns:repeat(4,1fr);
}
.stat{padding:0 26px;border-left:1px solid rgba(255,255,255,.14)}
.stat:first-child{border-left:none;padding-left:0}
.stat b{display:block;font-size:clamp(40px,5vw,60px);font-weight:700;color:#fff;line-height:1.1;font-variant-numeric:tabular-nums}
.stat b i{font-style:normal;font-size:17px;color:var(--orange);margin-left:4px;font-weight:600}
.stat span{display:block;font-size:14px;color:rgba(255,255,255,.66);margin-top:10px;line-height:1.6}

/* ---------- news ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:44px}
.news-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;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(-3px);box-shadow:var(--sh-2);border-color:rgba(22,86,214,.25)}
.news-thumb{display:block;aspect-ratio:16/9;overflow:hidden;background:var(--blue-light)}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.news-card:hover .news-thumb img{transform:scale(1.03)}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.news-body h3{
  font-size:17px;line-height:1.5;margin:10px 0 8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-body h3 a:hover{color:var(--blue)}
.news-body p{
  font-size:14px;color:var(--muted);margin:0 0 16px;
  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;
  font-size:13px;color:var(--muted);border-top:1px solid var(--line);padding-top:14px;
}
.news-foot svg{width:15px;height:15px;color:var(--blue);transition:transform .2s var(--ease)}
.news-card:hover .news-foot svg{transform:translateX(2px)}
.empty-state{
  grid-column:1/-1;text-align:center;padding:56px 24px;background:#fff;
  border:1px dashed var(--line);border-radius:var(--r-card);
}
.empty-state svg{width:34px;height:34px;color:var(--muted);margin:0 auto 14px}
.empty-state p{font-size:14px;color:var(--muted);margin-bottom:16px}

/* ---------- form ---------- */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.point-list li{position:relative;padding-left:30px;margin-bottom:18px}
.point-list li::before{
  content:"";position:absolute;left:0;top:8px;width:16px;height:16px;border-radius:5px;
  background:var(--blue-light);border:1px solid rgba(22,86,214,.35);
}
.point-list strong{display:block;color:var(--ink);font-size:16px;font-weight:600}
.point-list span{font-size:14px;color:var(--muted)}
.form-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:32px;box-shadow:var(--sh-1);
}
.form-card h3{font-size:20px;margin-bottom:8px}
.form-card>p{font-size:14px;color:var(--muted);margin-bottom:24px}
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;font-weight:600;color:var(--ink);margin-bottom:8px}
.field input,.field select,.field textarea{
  width:100%;height:48px;border:1px solid var(--line);border-radius:10px;
  padding:0 14px;background:#fff;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field textarea{height:112px;padding:12px 14px;resize:vertical;line-height:1.7}
.field select{appearance:none;background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%237B8CA3' stroke-width='2.4' stroke-linecap='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(22,86,214,.16);
}
.field .err{display:none;font-size:13px;color:var(--danger);margin-top:6px}
.field.has-error input,.field.has-error select{border-color:var(--danger)}
.field.has-error .err{display:block}
.check-row{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--muted);margin:4px 0 20px;line-height:1.7}
.check-row input{width:18px;height:18px;margin-top:4px;flex-shrink:0;accent-color:var(--blue)}
.check-row a{color:var(--blue);text-decoration:underline}

/* ---------- faq ---------- */
.faq-grid{display:grid;grid-template-columns:1fr 2fr;gap:48px;align-items:start}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;background:none;border:0;text-align:left;padding:22px 0;
  font-size:17px;font-weight:600;color:var(--ink);
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.faq-q:hover{color:var(--blue)}
.faq-icon{
  width:24px;height:24px;flex-shrink:0;border-radius:50%;border:1px solid var(--line);
  display:grid;place-items:center;color:var(--blue);font-size:15px;line-height:1;
  transition:transform .22s var(--ease),background .22s var(--ease);
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);background:var(--blue-light)}
.faq-a{max-height:0;opacity:0;overflow:hidden;transition:max-height .22s var(--ease),opacity .22s var(--ease)}
.faq-item.is-open .faq-a{max-height:340px;opacity:1}
.faq-a p{padding:0 0 22px;font-size:15px;color:var(--text);line-height:1.85;margin:0;max-width:680px}
.faq-more{margin-top:26px;font-size:14px;color:var(--muted)}

/* ---------- footer ---------- */
.site-footer{background:#fff;border-top:1px solid var(--line);padding-top:64px;margin-top:96px}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--muted);max-width:320px;margin-bottom:14px}
.footer-contact{font-size:14px;color:var(--text)}
.footer-col h4{font-size:15px;margin-bottom:16px}
.footer-col li{margin-bottom:11px}
.footer-col a{font-size:14px;color:var(--text);transition:color .2s var(--ease)}
.footer-col a:hover{color:var(--blue);text-decoration:underline}
.footer-bottom{
  border-top:1px solid var(--line);padding:22px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--muted);
}
.footer-bottom .fb-links{display:flex;gap:18px;flex-wrap:wrap}
.footer-bottom a:hover{color:var(--blue);text-decoration:underline}

/* ---------- drawer ---------- */
.drawer{position:fixed;inset:0;z-index:210;display:none}
.drawer.is-open{display:block}
.drawer-mask{position:absolute;inset:0;background:rgba(13,27,42,.45);-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px)}
.drawer-panel{
  position:absolute;top:0;right:0;bottom:0;width:min(360px,86vw);
  background:rgba(255,255,255,.97);
  -webkit-backdrop-filter:blur(16px) saturate(150%);
  backdrop-filter:blur(16px) saturate(150%);
  box-shadow:-20px 0 50px -30px rgba(13,27,42,.6);
  display:flex;flex-direction:column;
  animation:slideIn .24s var(--ease);
}
@keyframes slideIn{from{transform:translateX(24px);opacity:.4}to{transform:none;opacity:1}}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:18px 20px;border-bottom:1px solid var(--line)}
.drawer-nav{padding:12px 12px;flex:1;overflow:auto}
.drawer-nav a{display:block;font-size:18px;color:var(--ink);padding:0 12px;line-height:56px;border-radius:10px}
.drawer-nav a:hover,.drawer-nav a.active{background:var(--blue-light);color:var(--blue)}
.drawer-foot{padding:16px 20px 24px;border-top:1px solid var(--line)}

/* ---------- modal ---------- */
.modal{position:fixed;inset:0;z-index:220;display:none}
.modal.is-open{display:block}
.modal-mask{position:absolute;inset:0;background:rgba(13,27,42,.5);-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px)}
.modal-panel{
  position:relative;width:min(480px,calc(100% - 40px));margin:7vh auto 40px;background:#fff;
  border-radius:20px;padding:30px;box-shadow:0 40px 80px -30px rgba(13,27,42,.55);
  max-height:86vh;overflow:auto;animation:pop .24s var(--ease);
}
@keyframes pop{from{transform:translateY(14px);opacity:0}to{transform:none;opacity:1}}
.modal-panel h3{font-size:20px;margin-bottom:8px}
.modal-panel>p{font-size:14px;color:var(--muted);margin-bottom:22px}
.modal-close{
  position:absolute;top:14px;right:14px;width:36px;height:36px;border-radius:10px;
  border:1px solid var(--line);background:#fff;display:grid;place-items:center;color:var(--muted);
  transition:color .2s var(--ease),background .2s var(--ease);
}
.modal-close:hover{color:var(--blue);background:var(--blue-light)}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .hero-grid{gap:36px}
  .stat{padding:0 20px}
}
@media (max-width:1023px){
  .main-nav{display:none}
  .burger{display:grid;place-items:center}
  .header-actions .btn{display:none}
  .section{padding:72px 0}
  .hero{padding:130px 0 72px}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-visual{max-width:560px}
  .pain-grid{grid-template-columns:1fr 1fr}
  .solution-grid{grid-template-columns:1fr}
  .stats-band{grid-template-columns:repeat(2,1fr);gap:32px 0;padding:40px 28px}
  .stat:nth-child(3){border-left:none;padding-left:0}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .form-grid{grid-template-columns:1fr;gap:36px}
  .faq-grid{grid-template-columns:1fr;gap:28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  body{font-size:15.5px}
  .section{padding:56px 0}
  .hero{padding:112px 0 56px}
  .hero-sub{font-size:15.5px}
  .hero-cta .btn{flex:1 1 auto}
  .trust-row{gap:16px 20px}
  .pain-grid{grid-template-columns:1fr;gap:16px}
  .solution-card{grid-template-columns:1fr;gap:18px;padding:22px}
  .solution-card .shot{order:-1}
  .float-card{position:static;margin-top:16px;justify-self:start}
  .stats-band{grid-template-columns:1fr 1fr;padding:32px 22px;gap:26px 0;border-radius:18px}
  .stat{padding:0 16px}
  .news-grid{grid-template-columns:1fr}
  .form-card{padding:24px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .modal-panel{width:100%;max-width:none;margin:auto;border-radius:18px 18px 0 0;position:fixed;left:0;right:0;bottom:0;top:auto;max-height:90vh}
  .modal{display:none}
  .modal.is-open{display:block}
  .site-footer{margin-top:56px}
}
@media (max-width:420px){
  .container{padding:0 16px}
  .brand-text strong{font-size:16px}
  .hero-cta{flex-direction:column;align-items:stretch}
  .hero-cta .btn{width:100%}
  .stats-band{padding:26px 16px}
  .stat b{font-size:34px}
  .news-body{padding:18px}
}
@media (prefers-reduced-motion: reduce){
  *{animation-duration:.001ms!important;transition-duration:.001ms!important}
  html{scroll-behavior:auto}
}

/* roulang page: article */
:root{
  --c-primary:#1656D6;
  --c-primary-d:#0E3FA8;
  --c-primary-l:#E9F1FF;
  --c-accent:#FF7A2F;
  --c-accent-l:#FFF0E6;
  --c-teal:#00A79D;
  --t-1:#0D1B2A;
  --t-2:#46586E;
  --t-3:#7B8CA3;
  --line:#E4EAF3;
  --bg:#F6F8FC;
  --surface:#FFFFFF;
  --ink:#0A1A31;
  --r-card:14px;
  --r-lg:20px;
  --r-btn:10px;
  --sh-1:0 1px 2px rgba(13,27,42,.04), 0 10px 24px -16px rgba(13,27,42,.14);
  --sh-2:0 16px 36px -18px rgba(22,86,214,.28);
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--t-2);
  background:var(--bg);
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--t-1);font-weight:700}
p{margin:0}
[hidden]{display:none !important}
::selection{background:rgba(22,86,214,.16)}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;text-decoration:none;
  border:1px solid transparent;cursor:pointer;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-sm{height:44px;padding:0 20px;font-size:14.5px}
.btn-block{width:100%}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 10px 22px -14px rgba(22,86,214,.7)}
.btn-primary:hover{background:var(--c-primary-d);transform:translateY(-2px);box-shadow:0 16px 30px -16px rgba(22,86,214,.75)}
.btn-secondary{background:#fff;color:var(--c-primary);border-color:rgba(22,86,214,.4)}
.btn-secondary:hover{background:var(--c-primary-l);border-color:rgba(22,86,214,.6);transform:translateY(-2px)}
.btn:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid var(--c-primary);outline-offset:2px;border-radius:10px;
}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  font-size:12.5px;line-height:1;background:var(--c-primary-l);color:var(--c-primary-d);
}
.tag-accent{background:var(--c-accent-l);color:#C24E0E}
.tag-mute{background:#EEF2F8;color:var(--t-2)}

/* ============ header ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  background:rgba(255,255,255,.55);
  -webkit-backdrop-filter:blur(16px) saturate(150%);
  backdrop-filter:blur(16px) saturate(150%);
  border-bottom:1px solid rgba(255,255,255,.6);
  box-shadow:0 8px 24px -16px rgba(13,27,42,.25);
  transition:background .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header.is-stuck{
  background:rgba(255,255,255,.94);
  border-bottom-color:var(--line);
  box-shadow:0 10px 30px -20px rgba(13,27,42,.35);
}
.header-inner{position:relative;display:flex;align-items:center;gap:24px;height:72px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;flex:none}
.brand-mark{
  width:38px;height:38px;border-radius:11px;flex:none;
  background:linear-gradient(140deg,var(--c-primary),#3B7BF0);
  color:#fff;display:grid;place-items:center;
  box-shadow:0 8px 18px -12px rgba(22,86,214,.9);
}
.brand-mark svg{width:20px;height:20px}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:17px;color:var(--t-1);font-weight:700}
.brand-text em{font-style:normal;font-size:11.5px;color:var(--t-3);letter-spacing:.05em}
.main-nav{display:flex;align-items:center;gap:28px;margin-left:auto}
.main-nav a{
  position:relative;font-size:15px;color:var(--t-2);text-decoration:none;padding:6px 0;
  transition:color .2s var(--ease);
}
.main-nav a:hover{color:var(--c-primary)}
.main-nav a.active{color:var(--c-primary);font-weight:600}
.main-nav a.active::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  border-radius:2px;background:var(--c-primary);
}
.header-actions{display:flex;align-items:center;gap:10px;margin-left:8px}
.icon-btn{
  width:42px;height:42px;display:grid;place-items:center;
  border-radius:10px;border:1px solid var(--line);background:rgba(255,255,255,.7);
  color:var(--t-2);cursor:pointer;
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.icon-btn:hover{color:var(--c-primary);border-color:rgba(22,86,214,.35);background:#fff}
.burger{display:none;flex-direction:column;gap:4px;width:44px;height:44px}
.burger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--t-1);transition:transform .22s var(--ease),opacity .22s var(--ease)}
.burger.open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.burger.open span:nth-child(2){opacity:0}
.burger.open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.search-pop{
  position:absolute;right:24px;top:calc(100% + 10px);width:360px;max-width:calc(100vw - 40px);
  background:#fff;border:1px solid var(--line);border-radius:16px;
  box-shadow:0 24px 50px -26px rgba(13,27,42,.4);padding:18px;
}
.search-form{display:flex;gap:10px}
.search-form input{
  flex:1;height:44px;border-radius:10px;border:1px solid var(--line);
  padding:0 14px;font-size:14.5px;background:#fff;
}
.search-hot{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px;font-size:13px;color:var(--t-3)}
.search-hot a{color:var(--c-primary);text-decoration:none}
.search-hot a:hover{text-decoration:underline}

/* drawer */
.drawer-mask{
  position:fixed;inset:0;z-index:88;background:rgba(13,27,42,.45);
  -webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);
  opacity:0;visibility:hidden;transition:opacity .24s var(--ease),visibility .24s var(--ease);
}
.drawer-mask.open{opacity:1;visibility:visible}
.mobile-panel{
  position:fixed;top:0;right:0;bottom:0;z-index:90;width:min(340px,86vw);
  background:rgba(255,255,255,.96);
  -webkit-backdrop-filter:blur(18px) saturate(160%);
  backdrop-filter:blur(18px) saturate(160%);
  border-left:1px solid var(--line);
  padding:88px 22px 28px;display:flex;flex-direction:column;gap:6px;
  transform:translateX(105%);transition:transform .28s var(--ease);
}
.mobile-panel.open{transform:translateX(0)}
.mobile-nav{display:flex;flex-direction:column}
.mobile-nav a{
  display:flex;align-items:center;height:56px;font-size:18px;color:var(--t-1);
  text-decoration:none;border-bottom:1px solid var(--line);
}
.mobile-nav a:hover,.mobile-nav a.active{color:var(--c-primary)}
.mobile-panel .btn{margin-top:22px}
body.no-scroll{overflow:hidden}

/* ============ page top ============ */
.page-top{
  padding-top:calc(72px + 44px);
  padding-bottom:40px;
  background:
    radial-gradient(900px 320px at 12% -10%, rgba(22,86,214,.10), transparent 62%),
    linear-gradient(180deg,#FBFDFF 0%,var(--bg) 100%);
  border-bottom:1px solid var(--line);
}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--t-3);margin-bottom:20px}
.crumbs a{color:var(--t-3);text-decoration:none}
.crumbs a:hover{color:var(--c-primary)}
.crumbs .sep{color:#C3CEDA}
.crumbs .cur{color:var(--t-2);max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-head{max-width:880px}
.article-head .tag{margin-bottom:16px}
.article-head h1{
  font-size:clamp(28px,3.6vw,42px);
  line-height:1.24;
  letter-spacing:0;
  margin-bottom:20px;
}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:14px;font-size:14px;color:var(--t-3);padding-bottom:22px;border-bottom:1px solid var(--line)}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:#C3CEDA}

/* ============ layout ============ */
.main-wrap{padding:56px 0 88px}
.layout{display:grid;grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:48px;align-items:start}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease)}
.card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(22,86,214,.25)}
.article-main{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-1);padding:40px 44px}
.article-body{font-size:17px;line-height:1.9;color:var(--t-2)}
.article-body p{margin:0 0 1.2em}
.article-body h2{
  position:relative;font-size:24px;line-height:1.4;color:var(--t-1);
  margin:2em 0 .8em;padding-left:16px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:3px;
  border-radius:3px;background:var(--c-primary);
}
.article-body h3{font-size:19px;line-height:1.45;margin:1.7em 0 .6em;color:var(--t-1)}
.article-body h4{font-size:17px;margin:1.4em 0 .5em}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.4em}
.article-body li{margin:.45em 0}
.article-body ul li::marker{color:var(--c-primary)}
.article-body ol li::marker{color:var(--c-primary);font-weight:600}
.article-body a{color:var(--c-primary);text-decoration:none;border-bottom:1px solid rgba(22,86,214,.35)}
.article-body a:hover{border-bottom-color:var(--c-primary)}
.article-body strong{color:var(--t-1)}
.article-body img{border-radius:12px;margin:1.6em auto;height:auto}
.article-body figure{margin:1.8em 0}
.article-body figcaption{font-size:13px;color:var(--t-3);text-align:center;margin-top:10px}
.article-body blockquote{
  margin:1.6em 0;padding:16px 22px;border-left:3px solid var(--c-primary);
  background:var(--c-primary-l);border-radius:0 12px 12px 0;color:var(--t-2);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body table{
  width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px;
  display:block;overflow-x:auto;-webkit-overflow-scrolling:touch;
}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left;white-space:nowrap}
.article-body thead th{background:var(--c-primary-l);color:var(--t-1);font-weight:600}
.article-body tbody tr:nth-child(even){background:#FAFCFF}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2.2em 0}

/* aside */
.side-panel{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px}
.side-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);padding:24px}
.side-card h3{font-size:16px;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.side-card h3 .bar{width:3px;height:15px;border-radius:3px;background:var(--c-primary)}
.toc-list{list-style:none;margin:0;padding:0;max-height:340px;overflow:auto}
.toc-list li{margin:0}
.toc-list a{
  display:block;padding:8px 12px;border-radius:9px;font-size:14px;line-height:1.5;
  color:var(--t-2);text-decoration:none;border-left:2px solid transparent;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.toc-list a:hover{background:var(--c-primary-l);color:var(--c-primary-d)}
.toc-list a.current{background:var(--c-primary-l);color:var(--c-primary-d);border-left-color:var(--c-primary);font-weight:600}
.side-links{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px}
.side-links a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:11px 12px;border-radius:10px;font-size:14.5px;color:var(--t-2);text-decoration:none;
  transition:background .2s var(--ease),color .2s var(--ease);
}
.side-links a::after{content:"→";color:var(--t-3);transition:transform .2s var(--ease),color .2s var(--ease)}
.side-links a:hover{background:var(--c-primary-l);color:var(--c-primary-d)}
.side-links a:hover::after{transform:translateX(3px);color:var(--c-primary)}
.side-note{font-size:13.5px;color:var(--t-3);line-height:1.75;margin-top:12px}
.side-cta{background:linear-gradient(160deg,var(--c-primary) 0%,#2C6BE8 100%);border-radius:var(--r-card);padding:26px 24px;color:#fff;box-shadow:0 18px 38px -22px rgba(22,86,214,.9)}
.side-cta h3{color:#fff;font-size:17px;margin-bottom:8px}
.side-cta p{font-size:13.5px;color:rgba(255,255,255,.85);line-height:1.7;margin-bottom:16px}
.side-cta .btn{background:#fff;color:var(--c-primary-d);width:100%;border:none}
.side-cta .btn:hover{background:#EAF1FF;transform:translateY(-2px)}

/* ============ article foot ============ */
.article-foot{margin-top:40px;padding-top:26px;border-top:1px solid var(--line)}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px}
.tag-row .tag{text-decoration:none;cursor:default}
.article-actions{display:flex;flex-wrap:wrap;gap:16px;align-items:center}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14.5px;color:var(--c-primary);text-decoration:none;font-weight:600}
.link-arrow span{transition:transform .2s var(--ease)}
.link-arrow:hover span{transform:translateX(3px)}

/* related */
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:24px}
.section-head h2{font-size:clamp(22px,2.4vw,30px);line-height:1.3}
.section-head p{font-size:14.5px;color:var(--t-3);margin-top:8px}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.news-card{display:flex;flex-direction:column;overflow:hidden;text-decoration:none}
.news-thumb{aspect-ratio:16/10;overflow:hidden;background:var(--c-primary-l)}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease)}
.news-card:hover .news-thumb img{transform:scale(1.03)}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:12px;flex:1}
.news-body h3{font-size:17.5px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-body p{font-size:14px;color:var(--t-3);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{display:flex;align-items:center;justify-content:space-between;margin-top:auto;font-size:13px;color:var(--t-3);padding-top:6px;border-top:1px solid var(--line)}
.news-meta .go{color:var(--c-primary);font-weight:600}
.news-card:hover .news-meta .go{text-decoration:underline}

/* empty */
.empty-state{
  border:1px dashed var(--line);border-radius:var(--r-lg);background:#fff;
  padding:56px 24px;display:flex;flex-direction:column;align-items:center;gap:14px;text-align:center;
}
.empty-state svg{width:34px;height:34px;color:#B9C6D6}
.empty-state p{font-size:15px;color:var(--t-2)}

/* ============ CTA band ============ */
.cta-band{
  margin-top:72px;background:var(--c-primary-l);border:1px solid rgba(22,86,214,.16);
  border-radius:var(--r-lg);padding:38px 40px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(20px,2.2vw,26px);line-height:1.35;margin-bottom:8px}
.cta-band p{font-size:14px;color:var(--t-2);max-width:640px}
.cta-band .btn{flex:none}
.privacy-note{font-size:12.5px;color:var(--t-3);margin-top:10px}

/* ============ modal ============ */
.modal{position:fixed;inset:0;z-index:120;display:grid;place-items:center;padding:24px}
.modal-mask{position:absolute;inset:0;background:rgba(13,27,42,.5);-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px)}
.modal-card{
  position:relative;width:min(480px,100%);background:#fff;border-radius:18px;
  box-shadow:0 40px 80px -40px rgba(13,27,42,.6);padding:30px 30px 26px;
  animation:pop .24s var(--ease);
}
@keyframes pop{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}
.modal-close{
  position:absolute;top:14px;right:14px;width:36px;height:36px;border-radius:10px;
  border:1px solid var(--line);background:#fff;color:var(--t-2);cursor:pointer;font-size:20px;line-height:1;
  display:grid;place-items:center;
}
.modal-close:hover{color:var(--c-primary);border-color:rgba(22,86,214,.35)}
.modal-card h3{font-size:20px;margin-bottom:8px}
.modal-card > p{font-size:14px;color:var(--t-3);margin-bottom:20px}
.field{margin-bottom:14px}
.field label{display:block;font-size:13.5px;color:var(--t-2);margin-bottom:6px;font-weight:600}
.field input,.field select,.field textarea{
  width:100%;height:48px;border-radius:10px;border:1px solid var(--line);
  background:#fff;padding:0 14px;font-size:14.5px;color:var(--t-1);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field textarea{height:96px;padding:12px 14px;resize:vertical;line-height:1.7}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(22,86,214,.14)}
.field.error input,.field.error select{border-color:#D64545}
.field .err{display:none;font-size:13px;color:#D64545;margin-top:6px}
.field.error .err{display:block}
.check{display:flex;align-items:flex-start;gap:9px;font-size:13px;color:var(--t-3);line-height:1.7;margin:6px 0 18px}
.check input{width:16px;height:16px;margin-top:4px;accent-color:var(--c-primary);flex:none}
.check a{color:var(--c-primary);text-decoration:none}
.check a:hover{text-decoration:underline}

/* ============ footer ============ */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand .brand-text strong{color:#fff}
.footer-brand .brand-text em{color:rgba(255,255,255,.55)}
.footer-brand .brand-mark{background:rgba(255,255,255,.12)}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.66);max-width:320px}
.footer-contact{margin-top:12px;font-size:13.5px;color:rgba(255,255,255,.55)}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px}
.footer-col ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.68);text-decoration:none;transition:color .2s var(--ease)}
.footer-col a:hover{color:#fff;text-decoration:underline}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);padding:20px 0 26px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5);
}
.fb-links{display:flex;gap:20px;flex-wrap:wrap}
.fb-links a{color:rgba(255,255,255,.6);text-decoration:none}
.fb-links a:hover{color:#fff}

/* ============ responsive ============ */
@media (max-width:1279px){
  .layout{grid-template-columns:minmax(0,7fr) minmax(0,4fr);gap:34px}
  .article-main{padding:34px 32px}
  .related-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media (max-width:1023px){
  .main-nav{display:none}
  .burger{display:flex}
  .header-actions{margin-left:auto}
  .layout{grid-template-columns:1fr}
  .side-panel{position:static;order:2}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-band{padding:32px 28px}
  .article-main{padding:30px 26px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .header-inner{height:60px;gap:14px}
  .brand-text strong{font-size:15.5px}
  .brand-text em{font-size:10.5px}
  .header-actions .btn-sm{display:none}
  .page-top{padding-top:calc(60px + 30px);padding-bottom:30px}
  .main-wrap{padding:38px 0 64px}
  .article-main{padding:24px 20px;border-radius:16px}
  .article-body{font-size:15.5px;line-height:1.9}
  .article-body h2{font-size:20px;padding-left:13px}
  .article-body h3{font-size:17.5px}
  .article-head h1{font-size:24px}
  .meta-row{gap:10px;font-size:13px}
  .crumbs .cur{max-width:180px}
  .related-grid{grid-template-columns:1fr}
  .cta-band{padding:26px 22px;flex-direction:column;align-items:flex-start}
  .cta-band .btn{width:100%}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px;padding-bottom:32px}
  .footer-brand{grid-column:1 / -1}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .modal{padding:0;place-items:stretch}
  .modal-card{width:100%;height:100%;border-radius:0;overflow-y:auto;padding:64px 22px 32px;animation:none}
  .search-pop{right:20px;left:20px;width:auto}
}
@media (max-width:400px){
  .container{padding:0 16px}
  .brand-mark{width:34px;height:34px;border-radius:10px}
  .article-head h1{font-size:22px}
  .article-body{font-size:15px}
  .footer-grid{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
  html{scroll-behavior:auto}
}

/* roulang page: category1 */
:root{
  --blue:#1656D6;
  --blue-d:#0E3FA8;
  --blue-l:#E9F1FF;
  --orange:#FF7A2F;
  --orange-l:#FFF0E6;
  --teal:#00A79D;
  --ink:#0D1B2A;
  --text:#46586E;
  --muted:#7B8CA3;
  --line:#E4EAF3;
  --bg:#F6F8FC;
  --card:#FFFFFF;
  --dark:#0A1A31;
  --sh-1:0 1px 2px rgba(13,27,42,.04), 0 10px 24px -16px rgba(13,27,42,.14);
  --sh-2:0 16px 36px -18px rgba(22,86,214,.28);
  --r-card:14px;
  --r-lg:24px;
  --r-btn:10px;
  --r-pill:999px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
}
body.nav-open{overflow:hidden}
h1,h2,h3,h4{color:var(--ink);margin:0;line-height:1.3;font-weight:700}
h1{font-size:clamp(32px,4.4vw,52px);line-height:1.18}
h2{font-size:clamp(24px,3vw,36px);line-height:1.25}
h3{font-size:20px;line-height:1.4}
h4{font-size:17px}
p{margin:0 0 1.2em}
p:last-child{margin-bottom:0}
a{color:var(--blue);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--blue-d)}
ul,ol{margin:0;padding:0;list-style:none}
img{max-width:100%;display:block}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer}
input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--blue);outline-offset:2px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section-sm{padding:72px 0}
.section-head{max-width:720px}
.section-head p{margin-top:14px;color:var(--text)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:.06em;
  color:var(--blue);background:var(--blue-l);
  border-radius:var(--r-pill);padding:6px 14px;margin-bottom:18px;
}
.eyebrow.orange{color:#C24E0F;background:var(--orange-l)}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:600;color:var(--blue);
  border-bottom:1px solid transparent;transition:color .2s var(--ease),border-color .2s var(--ease);
}
.text-link span{transition:transform .2s var(--ease)}
.text-link:hover{border-bottom-color:currentColor}
.text-link:hover span{transform:translateX(3px)}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-primary{background:var(--blue);color:#fff;box-shadow:0 10px 22px -14px rgba(22,86,214,.6)}
.btn-primary:hover{background:var(--blue-d);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn-outline{background:#fff;color:var(--blue);border-color:rgba(22,86,214,.4)}
.btn-outline:hover{background:var(--blue-l);border-color:var(--blue);color:var(--blue-d);transform:translateY(-2px)}
.btn-ghost{background:rgba(255,255,255,.14);color:#fff;border-color:rgba(255,255,255,.5)}
.btn-ghost:hover{background:rgba(255,255,255,.24);color:#fff}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn:disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none}

/* 标签徽章 */
.pill{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 12px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;background:var(--blue-l);color:var(--blue);
}
.pill-orange{background:var(--orange-l);color:#C24E0F}
.pill-neutral{background:#EEF2F8;color:var(--text)}

/* header */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  background:rgba(255,255,255,.55);
  -webkit-backdrop-filter:blur(16px) saturate(150%);
  backdrop-filter:blur(16px) saturate(150%);
  border-bottom:1px solid rgba(255,255,255,.6);
  box-shadow:0 8px 24px -16px rgba(13,27,42,.25);
  transition:background .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.site-header.is-stuck{
  background:rgba(255,255,255,.94);
  border-bottom-color:var(--line);
  box-shadow:0 12px 30px -22px rgba(13,27,42,.5);
}
.header-inner{display:flex;align-items:center;gap:20px;height:72px}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink)}
.brand:hover{color:var(--ink)}
.brand-mark{
  width:34px;height:34px;border-radius:10px;flex:none;
  display:flex;align-items:center;justify-content:center;
  background:var(--blue-l);color:var(--blue);
}
.brand-mark svg{width:20px;height:20px}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:16px;font-weight:700;color:var(--ink)}
.brand-text em{font-style:normal;font-size:11.5px;color:var(--muted);letter-spacing:.04em}
.main-nav{display:flex;align-items:center;gap:6px;margin:0 auto}
.main-nav a{
  position:relative;display:inline-block;
  padding:8px 14px;font-size:15px;font-weight:500;color:var(--text);
  border-radius:8px;transition:color .2s var(--ease),background .2s var(--ease);
}
.main-nav a:hover{color:var(--blue);background:rgba(233,241,255,.8)}
.main-nav a.active{color:var(--blue);font-weight:600}
.main-nav a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:0;
  height:2px;border-radius:2px;background:var(--blue);
}
.header-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
.icon-btn{
  width:40px;height:40px;border-radius:10px;flex:none;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);background:rgba(255,255,255,.7);color:var(--text);
  transition:border-color .2s var(--ease),color .2s var(--ease),background .2s var(--ease);
}
.icon-btn:hover{border-color:rgba(22,86,214,.4);color:var(--blue);background:#fff}
.burger{display:none;flex-direction:column;gap:4px;align-items:center;justify-content:center}
.burger span{display:block;width:18px;height:2px;border-radius:2px;background:currentColor;transition:transform .22s var(--ease),opacity .22s var(--ease)}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* 搜索面板 */
.search-panel{
  position:fixed;top:72px;left:0;right:0;z-index:55;
  background:rgba(255,255,255,.97);
  -webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
  box-shadow:0 18px 36px -26px rgba(13,27,42,.5);
  transform:translateY(-12px);opacity:0;pointer-events:none;
  transition:transform .22s var(--ease),opacity .22s var(--ease);
}
.search-panel.is-open{transform:none;opacity:1;pointer-events:auto}
.search-inner{padding:22px 24px 26px;max-width:var(--container);margin:0 auto}
.search-field{display:flex;gap:10px}
.search-field input{
  flex:1;height:48px;padding:0 16px;border-radius:var(--r-btn);
  border:1px solid var(--line);background:#fff;color:var(--ink);
}
.search-field input:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(22,86,214,.16)}
.search-hot{display:flex;align-items:center;flex-wrap:wrap;gap:10px;margin-top:16px;font-size:13px;color:var(--muted)}
.search-hot a{
  display:inline-flex;height:28px;align-items:center;padding:0 12px;
  border-radius:var(--r-pill);background:#EEF2F8;color:var(--text);font-size:13px;
}
.search-hot a:hover{background:var(--blue-l);color:var(--blue)}

.drawer-mask{
  position:fixed;inset:0;z-index:58;background:rgba(13,27,42,.42);
  -webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);
  opacity:0;pointer-events:none;transition:opacity .22s var(--ease);
}
.drawer-mask.is-open{opacity:1;pointer-events:auto}

/* hero */
.cat-hero{
  position:relative;overflow:hidden;
  padding:136px 0 76px;
  background:
    linear-gradient(180deg,rgba(255,255,255,.94) 0%,rgba(246,248,252,.92) 62%,rgba(246,248,252,1) 100%),
    url("/assets/images/backpic/back-1.webp") center/cover no-repeat;
}
.cat-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(22,86,214,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(22,86,214,.05) 1px,transparent 1px);
  background-size:48px 48px;
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.7),transparent 72%);
  mask-image:linear-gradient(180deg,rgba(0,0,0,.7),transparent 72%);
}
.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:56px;align-items:center}
.hero-copy h1{margin-bottom:18px}
.hero-sub{font-size:17px;color:var(--text);max-width:560px;margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-bottom:32px}
.hero-trust{display:flex;flex-wrap:wrap;gap:12px}
.hero-trust li{
  display:inline-flex;align-items:center;gap:8px;
  height:32px;padding:0 14px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.85);border:1px solid var(--line);
  font-size:13px;color:var(--text);
}
.hero-trust li i{width:6px;height:6px;border-radius:50%;background:var(--teal);flex:none;display:block}
.hero-media{position:relative}
.hero-media img{
  width:100%;aspect-ratio:16/11;object-fit:cover;
  border-radius:var(--r-lg);border:1px solid var(--line);
  box-shadow:var(--sh-2);background:#fff;
}
.hero-media .media-frame{
  position:relative;border-radius:calc(var(--r-lg) + 6px);
  padding:8px;background:rgba(255,255,255,.75);
  border:1px solid rgba(255,255,255,.9);
  box-shadow:0 24px 50px -30px rgba(13,27,42,.45);
}
.float-card{
  position:absolute;left:-24px;bottom:-22px;z-index:2;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:16px 20px;box-shadow:var(--sh-1);min-width:170px;
}
.float-card .num{font-size:26px;font-weight:700;color:var(--ink);font-variant-numeric:tabular-nums;line-height:1.2}
.float-card .label{font-size:13px;color:var(--muted)}

/* 面包屑 */
.breadcrumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:14px;color:var(--muted);margin-bottom:22px;
  position:relative;z-index:1;
}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--blue)}
.breadcrumb .sep{color:#C6D1E0}
.breadcrumb .current{color:var(--text);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:60vw}

/* 侧栏布局 */
.layout-side{display:grid;grid-template-columns:minmax(220px,1fr) minmax(0,3fr);gap:44px;align-items:start}
.toc{position:sticky;top:96px}
.toc-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:22px;box-shadow:var(--sh-1)}
.toc-title{font-size:12px;font-weight:600;letter-spacing:.08em;color:var(--muted);margin:0 0 14px}
.toc-list li+li{margin-top:4px}
.toc-list a{
  display:flex;align-items:center;gap:10px;
  padding:9px 12px;border-radius:9px;font-size:14.5px;color:var(--text);
  transition:background .2s var(--ease),color .2s var(--ease);
}
.toc-list a:hover{background:var(--blue-l);color:var(--blue)}
.toc-list a.is-active{background:var(--blue-l);color:var(--blue);font-weight:600}
.toc-list a i{width:18px;height:2px;border-radius:2px;background:currentColor;opacity:.5;display:block;flex:none}
.toc-help{margin-top:18px;padding:18px;border-radius:var(--r-card);background:var(--blue-l);border:1px solid rgba(22,86,214,.14)}
.toc-help p{font-size:13.5px;color:#2A4570;margin-bottom:12px}
.toc-help .btn{width:100%;height:42px;font-size:14px}

/* 内容分区 */
.block{scroll-margin-top:100px}
.block+.block{margin-top:56px}
.block-head{margin-bottom:22px}
.block-head h2{display:flex;align-items:center;gap:12px}
.block-head h2::before{content:"";width:3px;height:24px;border-radius:3px;background:var(--blue);flex:none}
.block-lead{font-size:16.5px;color:var(--text);margin-top:16px}
.point-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin-top:26px}
.point-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.point-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(22,86,214,.25)}
.point-card h3{font-size:18px;margin-bottom:10px}
.point-card p{font-size:14.5px;color:var(--text);line-height:1.8}
.point-icon{
  width:38px;height:38px;border-radius:11px;margin-bottom:14px;
  display:flex;align-items:center;justify-content:center;
  background:var(--blue-l);color:var(--blue);
}
.point-icon svg{width:19px;height:19px}
.point-icon.orange{background:var(--orange-l);color:#C24E0F}
.point-icon.teal{background:rgba(0,167,157,.12);color:var(--teal)}

.figure-card{
  margin-top:28px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-lg);padding:10px;box-shadow:var(--sh-1);
}
.figure-card img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:16px}
.figure-card figcaption{font-size:13px;color:var(--muted);text-align:center;padding:12px 8px 6px}

.check-list{margin-top:22px;display:grid;gap:12px}
.check-list li{display:flex;gap:12px;font-size:15px;color:var(--text);line-height:1.8}
.check-list li svg{width:18px;height:18px;flex:none;margin-top:5px;color:var(--teal)}

/* 成功数据带 */
.data-band{
  background:var(--dark);border-radius:var(--r-lg);
  padding:48px 44px;margin:56px 0;color:#fff;
}
.data-band h2{color:#fff;font-size:clamp(22px,2.6vw,30px);margin-bottom:12px}
.data-band .band-lead{color:rgba(255,255,255,.72);font-size:15px;max-width:640px;margin-bottom:34px}
.data-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0}
.data-item{padding:0 26px;position:relative}
.data-item:first-child{padding-left:0}
.data-item:last-child{padding-right:0}
.data-item+.data-item::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:1px;background:rgba(255,255,255,.16);
}
.data-num{
  font-size:clamp(36px,4.4vw,52px);font-weight:700;line-height:1.1;
  font-variant-numeric:tabular-nums;color:#fff;display:flex;align-items:baseline;gap:6px;
}
.data-num span{font-size:15px;font-weight:600;color:var(--orange)}
.data-label{font-size:14px;color:rgba(255,255,255,.72);margin-top:10px;line-height:1.7}

/* FAQ */
.faq-wrap{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,2fr);gap:52px;align-items:start}
.faq-aside p{margin-top:16px;font-size:15px}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 4px;text-align:left;font-size:17px;font-weight:600;color:var(--ink);
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--blue)}
.faq-icon{
  position:relative;width:22px;height:22px;flex:none;border-radius:50%;
  background:var(--blue-l);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--blue);border-radius:2px;
  transform:translate(-50%,-50%);transition:transform .22s var(--ease),opacity .22s var(--ease);
}
.faq-icon::before{width:10px;height:2px}
.faq-icon::after{width:2px;height:10px}
.faq-item.is-open .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0}
.faq-a{max-height:0;overflow:hidden;opacity:0;transition:max-height .24s var(--ease),opacity .24s var(--ease)}
.faq-item.is-open .faq-a{max-height:340px;opacity:1}
.faq-a-inner{padding:0 4px 24px;font-size:15px;line-height:1.85;color:var(--text);max-width:760px}
.faq-more{margin-top:26px;font-size:14.5px;color:var(--muted)}

/* CTA */
.cta-band{
  background:var(--blue-l);border:1px solid rgba(22,86,214,.16);
  border-radius:var(--r-lg);padding:48px 44px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:12px}
.cta-band p{font-size:15px;color:#33507E;max-width:600px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center}

/* footer */
.site-footer{background:#0A1A31;color:rgba(255,255,255,.72);padding:72px 0 0;margin-top:96px}
.footer-grid{display:grid;grid-template-columns:minmax(0,1.5fr) repeat(3,minmax(0,1fr));gap:40px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand .brand-text strong{color:#fff}
.footer-brand .brand-text em{color:rgba(255,255,255,.55)}
.footer-brand .brand-mark{background:rgba(255,255,255,.12);color:#9CC0FF}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);max-width:300px}
.footer-contact{margin-top:10px;color:rgba(255,255,255,.75)!important;font-size:13.5px!important}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:18px}
.footer-col ul li+li{margin-top:10px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.62)}
.footer-col a:hover{color:#fff;text-decoration:underline}
.footer-bottom{
  margin-top:56px;padding:22px 0;border-top:1px solid rgba(255,255,255,.12);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5);
}
.fb-links{display:flex;gap:18px;flex-wrap:wrap}
.fb-links a{color:rgba(255,255,255,.55)}
.fb-links a:hover{color:#fff}

/* 弹层 */
.modal{
  position:fixed;inset:0;z-index:80;display:flex;align-items:center;justify-content:center;
  padding:24px;opacity:0;pointer-events:none;transition:opacity .22s var(--ease);
}
.modal.is-open{opacity:1;pointer-events:auto}
.modal-mask{position:absolute;inset:0;background:rgba(13,27,42,.5);-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px)}
.modal-card{
  position:relative;width:min(480px,100%);max-height:92vh;overflow:auto;
  background:#fff;border-radius:var(--r-lg);padding:32px;
  box-shadow:0 30px 70px -30px rgba(13,27,42,.6);
  transform:translateY(10px);transition:transform .24s var(--ease);
}
.modal.is-open .modal-card{transform:none}
.modal-close{
  position:absolute;top:16px;right:16px;width:36px;height:36px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;color:var(--muted);
  border:1px solid var(--line);background:#fff;
}
.modal-close:hover{color:var(--blue);border-color:rgba(22,86,214,.35)}
.modal-card h2{font-size:22px;margin-bottom:10px}
.modal-card .modal-lead{font-size:14.5px;color:var(--muted);margin-bottom:24px}
.form-grid{display:grid;gap:16px}
.field label{display:block;font-size:13.5px;font-weight:600;color:var(--ink);margin-bottom:8px}
.field input,.field select,.field textarea{
  width:100%;height:48px;padding:0 14px;border-radius:var(--r-btn);
  border:1px solid var(--line);background:#fff;color:var(--ink);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field textarea{height:auto;min-height:96px;padding:12px 14px;line-height:1.7;resize:vertical}
.field select{
  -webkit-appearance:none;appearance:none;
  background-image:linear-gradient(45deg,transparent 50%,var(--muted) 50%),linear-gradient(135deg,var(--muted) 50%,transparent 50%);
  background-position:calc(100% - 20px) 21px,calc(100% - 14px) 21px;
  background-size:6px 6px,6px 6px;background-repeat:no-repeat;
  padding-right:40px;
}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(22,86,214,.16);
}
.field.is-error input,.field.is-error select{border-color:#D64545;box-shadow:0 0 0 3px rgba(214,69,69,.12)}
.field-error{font-size:13px;color:#D64545;margin-top:6px;display:none}
.field.is-error .field-error{display:block}
.check-row{display:flex;gap:10px;align-items:flex-start;font-size:13.5px;color:var(--text);line-height:1.7}
.check-row input{width:18px;height:18px;flex:none;margin-top:4px;accent-color:var(--blue)}
.check-row a{color:var(--blue);text-decoration:underline}
.form-note{font-size:12.5px;color:var(--muted);margin-top:4px}
.form-success{
  display:none;margin-top:16px;padding:14px 16px;border-radius:var(--r-btn);
  background:rgba(0,167,157,.1);color:#0B6B66;font-size:14px;
  border:1px solid rgba(0,167,157,.25);
}
.form-success.is-show{display:block}

/* 响应式 */
@media (max-width:1279px){
  .hero-grid{gap:40px}
}
@media (max-width:1023px){
  .header-inner{height:60px}
  .search-panel{top:60px}
  .main-nav{
    position:fixed;top:0;right:0;z-index:70;
    width:min(340px,86vw);height:100vh;
    flex-direction:column;align-items:stretch;gap:0;
    margin:0;padding:88px 24px 32px;
    background:rgba(255,255,255,.97);
    -webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
    box-shadow:-20px 0 44px -26px rgba(13,27,42,.5);
    transform:translateX(102%);transition:transform .28s var(--ease);
  }
  .main-nav.is-open{transform:none}
  .main-nav a{padding:0;height:56px;line-height:56px;font-size:18px;border-bottom:1px solid var(--line);border-radius:0}
  .main-nav a:hover{background:transparent}
  .main-nav a.active::after{display:none}
  .burger{display:inline-flex}
  .cat-hero{padding:110px 0 64px}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-media{order:-1}
  .hero-media img{aspect-ratio:16/9}
  .float-card{left:auto;right:16px;bottom:-18px}
  .layout-side{grid-template-columns:1fr;gap:32px}
  .toc{position:static}
  .toc-card{padding:18px}
  .toc-list{display:flex;flex-wrap:wrap;gap:8px}
  .toc-list li+li{margin-top:0}
  .toc-list a{padding:8px 12px;background:#F1F5FC;font-size:14px}
  .toc-help{display:none}
  .data-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px 0}
  .data-item:nth-child(odd){padding-left:0}
  .data-item:nth-child(3)::before,.data-item:nth-child(1)::before{display:none}
  .data-item:nth-child(even){padding-right:0}
  .data-band{padding:40px 30px}
  .faq-wrap{grid-template-columns:1fr;gap:32px}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:36px}
  .section{padding:72px 0}
  .site-footer{margin-top:72px}
}
@media (max-width:767px){
  body{font-size:15.5px}
  .container{padding:0 20px}
  .section{padding:56px 0}
  .section-sm{padding:48px 0}
  #searchToggle{display:none}
  .brand-text strong{font-size:15px}
  .hero-actions .btn{width:100%}
  .hero-actions{flex-direction:column;align-items:stretch;gap:12px}
  .hero-actions .text-link{justify-content:center}
  .float-card{display:none}
  .point-grid{grid-template-columns:1fr}
  .data-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .data-item{padding:0 18px}
  .data-item:nth-child(odd){padding-left:0}
  .data-item:nth-child(even){padding-right:0}
  .cta-band{padding:32px 24px;flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .modal{padding:0;align-items:stretch}
  .modal-card{
    width:100%;max-height:100vh;height:100%;border-radius:0;
    padding:28px 20px 100px;display:flex;flex-direction:column;
  }
  .modal-card .form-grid{flex:1}
  .modal-submit{
    position:fixed;left:0;right:0;bottom:0;padding:14px 20px;
    background:rgba(255,255,255,.96);border-top:1px solid var(--line);
    -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  }
  .modal-submit .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .breadcrumb .current{max-width:70vw}
}
@media (max-width:400px){
  .container{padding:0 16px}
  .brand-mark{width:30px;height:30px}
  .header-actions{gap:8px}
  .header-actions .btn-sm{height:36px;padding:0 14px;font-size:13px}
  h1{font-size:clamp(26px,7.6vw,32px)}
  .data-item{padding:0 12px}
  .data-num{font-size:32px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
  .point-card:hover,.btn:hover{transform:none}
}

/* roulang page: category2 */
:root{
  --blue:#1656D6;
  --blue-d:#0E3FA8;
  --blue-l:#E9F1FF;
  --orange:#FF7A2F;
  --orange-l:#FFF0E6;
  --teal:#00A79D;
  --ink:#0D1B2A;
  --ink-2:#46586E;
  --ink-3:#7B8CA3;
  --line:#E4EAF3;
  --bg:#F6F8FC;
  --card:#FFFFFF;
  --deep:#0A1A31;
  --r-card:14px;
  --r-lg:22px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(13,27,42,.04), 0 10px 24px -16px rgba(13,27,42,.14);
  --sh-2:0 16px 36px -18px rgba(22,86,214,.28);
  --ease:cubic-bezier(.2,.7,.3,1);
  --sec:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;cursor:pointer;}
h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:700;color:var(--ink);}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--blue);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.sec{padding:var(--sec) 0;}
.sec-head{max-width:760px;margin-bottom:44px;}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.sec-head h2{font-size:clamp(24px,3vw,36px);}
.sec-head p{margin-top:14px;color:var(--ink-2);font-size:16px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  height:28px;padding:0 14px;border-radius:var(--r-pill);
  background:var(--blue-l);color:var(--blue);
  font-size:12px;font-weight:600;letter-spacing:.06em;
}
.eyebrow.orange{background:var(--orange-l);color:#C4551A;}

/* ============ header ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(255,255,255,.55);
  -webkit-backdrop-filter:blur(16px) saturate(150%);
  backdrop-filter:blur(16px) saturate(150%);
  border-bottom:1px solid rgba(255,255,255,.6);
  box-shadow:0 8px 24px -16px rgba(13,27,42,.25);
  transition:background .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.site-header.is-stuck{
  background:rgba(255,255,255,.94);
  border-bottom-color:var(--line);
  box-shadow:0 8px 24px -14px rgba(13,27,42,.32);
}
.header-inner{display:flex;align-items:center;gap:20px;height:72px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:38px;height:38px;border-radius:11px;flex-shrink:0;
  background:linear-gradient(135deg,var(--blue),var(--blue-d));
  color:#fff;display:grid;place-items:center;
  box-shadow:0 8px 18px -12px rgba(22,86,214,.9);
}
.brand-mark svg{width:20px;height:20px;}
.brand-text{display:flex;flex-direction:column;line-height:1.14;}
.brand-text strong{font-size:16px;font-weight:700;letter-spacing:.01em;}
.brand-text em{font-size:11px;font-style:normal;color:var(--ink-3);letter-spacing:.14em;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto;}
.main-nav a{
  position:relative;padding:8px 14px;border-radius:8px;
  font-size:15px;color:var(--ink-2);
  transition:color .2s var(--ease),background .2s var(--ease);
}
.main-nav a:hover{color:var(--blue);background:rgba(22,86,214,.06);}
.main-nav a.active{color:var(--blue);font-weight:600;}
.main-nav a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:-2px;height:2px;
  border-radius:2px;background:var(--blue);
}
.header-actions{display:flex;align-items:center;gap:10px;margin-left:20px;}
.icon-btn{
  width:42px;height:42px;border-radius:10px;
  border:1px solid var(--line);background:#fff;color:var(--ink-2);
  display:grid;place-items:center;
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.icon-btn:hover{color:var(--blue);border-color:rgba(22,86,214,.35);background:var(--blue-l);}
.burger{display:none;padding:0;}
.burger span{display:block;width:17px;height:2px;border-radius:2px;background:currentColor;}
.burger span+span{margin-top:4px;}

/* 搜索浮层 */
.search-panel{
  position:absolute;top:100%;left:0;right:0;
  background:rgba(255,255,255,.97);
  -webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
  box-shadow:0 20px 34px -26px rgba(13,27,42,.45);
  padding:18px 0;
  display:none;
}
.search-panel.open{display:block;}
.search-form{display:flex;gap:12px;align-items:center;}
.search-form input{
  flex:1;height:48px;padding:0 16px;border-radius:var(--r-btn);
  border:1px solid var(--line);background:#fff;font-size:15px;color:var(--ink);
}
.search-form input:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(22,86,214,.14);}
.search-hint{margin-top:10px;font-size:13px;color:var(--ink-3);}

/* ============ buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:transform .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-primary{background:var(--blue);color:#fff;box-shadow:0 12px 22px -16px rgba(22,86,214,.9);}
.btn-primary:hover{background:var(--blue-d);transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn-ghost{background:#fff;color:var(--blue);border-color:rgba(22,86,214,.4);}
.btn-ghost:hover{background:var(--blue-l);transform:translateY(-2px);}
.btn-block{width:100%;}
.btn:disabled{opacity:.4;cursor:not-allowed;transform:none;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--blue);font-size:14px;font-weight:600;
}
.link-arrow svg{width:16px;height:16px;transition:transform .2s var(--ease);}
.link-arrow:hover{text-decoration:underline;}
.link-arrow:hover svg{transform:translateX(2px);}

/* ============ hero ============ */
.page-hero{
  position:relative;
  padding:136px 0 0;
  background:#fff;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(22,86,214,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(22,86,214,.04) 1px,transparent 1px);
  background-size:46px 46px;
  -webkit-mask-image:radial-gradient(120% 80% at 50% 0%,#000 30%,transparent 78%);
  mask-image:radial-gradient(120% 80% at 50% 0%,#000 30%,transparent 78%);
  pointer-events:none;
}
.hero-narrow{position:relative;z-index:1;max-width:760px;margin:0 auto;text-align:center;}
.crumbs{
  display:flex;justify-content:center;flex-wrap:wrap;gap:8px;
  font-size:14px;color:var(--ink-3);margin-bottom:22px;
}
.crumbs a{color:var(--ink-3);}
.crumbs a:hover{color:var(--blue);}
.crumbs span{color:var(--ink-2);}
.page-hero h1{
  font-size:clamp(30px,4.2vw,48px);
  line-height:1.18;
  margin:18px 0 0;
}
.hero-sub{margin-top:18px;font-size:17px;color:var(--ink-2);line-height:1.8;}
.hero-cta{display:flex;justify-content:center;gap:14px;margin-top:30px;flex-wrap:wrap;}
.hero-strip{
  display:flex;justify-content:center;flex-wrap:wrap;gap:14px 30px;
  margin-top:34px;padding-top:26px;border-top:1px solid var(--line);
}
.hero-strip li{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--ink-2);}
.hero-strip svg{width:17px;height:17px;color:var(--teal);flex-shrink:0;}
.hero-figure{
  position:relative;z-index:1;
  margin:52px auto 0;
  max-width:1200px;
  border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--sh-1);
}
.hero-figure img{width:100%;aspect-ratio:21/8;object-fit:cover;}
.hero-figure figcaption{
  position:absolute;left:0;right:0;bottom:0;
  padding:44px 24px 18px;font-size:13px;color:#fff;
  background:linear-gradient(transparent,rgba(10,26,49,.72));
}
.hero-pad{height:76px;}

/* ============ timeline ============ */
.timeline{max-width:880px;margin:0 auto;}
.step{
  position:relative;
  display:grid;grid-template-columns:68px 1fr;gap:24px;
  padding-bottom:28px;
}
.step::before{
  content:"";position:absolute;left:33px;top:70px;bottom:0;width:2px;
  background:linear-gradient(var(--blue-l),var(--line));
}
.step:last-child{padding-bottom:0;}
.step:last-child::before{display:none;}
.step-num{
  width:68px;height:68px;border-radius:50%;
  background:#fff;border:1px solid var(--line);
  display:grid;place-items:center;position:relative;z-index:1;
  font-size:18px;font-weight:700;color:var(--blue);
  font-variant-numeric:tabular-nums;
  box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),border-color .22s var(--ease);
}
.step:hover .step-num{transform:translateY(-3px);border-color:rgba(22,86,214,.35);}
.step-body{
  background:var(--card);border:1px solid var(--line);
  border-radius:16px;padding:24px 28px;box-shadow:var(--sh-1);
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease),transform .22s var(--ease);
}
.step-body:hover{border-color:rgba(22,86,214,.25);box-shadow:var(--sh-2);transform:translateY(-3px);}
.step-body h3{font-size:19px;}
.step-body p{margin-top:10px;color:var(--ink-2);font-size:15.5px;}
.step-media{margin-top:18px;border-radius:12px;overflow:hidden;border:1px solid var(--line);}
.step-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .3s var(--ease);}
.step-media:hover img{transform:scale(1.03);}
.step-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}

/* ============ pills ============ */
.pill{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:var(--r-pill);font-size:12.5px;font-weight:600;
  background:var(--blue-l);color:var(--blue);
}
.pill-orange{background:var(--orange-l);color:#C4551A;}
.pill-neutral{background:#EEF2F8;color:var(--ink-2);}

/* ============ data band ============ */
.data-band{
  background:var(--deep);border-radius:var(--r-lg);
  padding:52px 44px;color:#fff;
  box-shadow:0 26px 50px -34px rgba(10,26,49,.7);
}
.data-band h2{color:#fff;font-size:clamp(20px,2.4vw,26px);}
.data-band .band-note{margin-top:10px;font-size:14px;color:rgba(255,255,255,.6);}
.data-grid{display:grid;grid-template-columns:repeat(4,1fr);margin-top:40px;}
.data-item{padding:0 26px;}
.data-item:first-child{padding-left:0;}
.data-item+.data-item{border-left:1px solid rgba(255,255,255,.14);}
.data-num{
  font-size:clamp(36px,4.4vw,54px);font-weight:700;line-height:1.08;
  font-variant-numeric:tabular-nums;
}
.data-num small{font-size:15px;font-weight:600;color:rgba(255,255,255,.62);margin-left:5px;}
.data-item p{margin-top:10px;font-size:14px;color:rgba(255,255,255,.66);line-height:1.7;}

/* ============ checklist ============ */
.check-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.check-card{
  display:flex;gap:16px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.check-card:hover{transform:translateY(-3px);border-color:rgba(22,86,214,.25);box-shadow:var(--sh-2);}
.check-icon{
  width:44px;height:44px;border-radius:12px;flex-shrink:0;
  background:var(--blue-l);color:var(--blue);
  display:grid;place-items:center;
}
.check-icon svg{width:20px;height:20px;}
.check-card h3{font-size:17px;}
.check-card p{margin-top:8px;font-size:14.5px;color:var(--ink-2);}

/* ============ faq ============ */
.faq-wrap{display:grid;grid-template-columns:1fr 2fr;gap:48px;align-items:start;}
.faq-aside p{margin-top:16px;color:var(--ink-2);font-size:15px;}
.faq-item{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  margin-bottom:12px;overflow:hidden;
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.faq-item.open{border-color:rgba(22,86,214,.3);box-shadow:var(--sh-1);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;background:none;border:0;text-align:left;
  font-size:17px;font-weight:600;color:var(--ink);
}
.faq-icon{
  width:26px;height:26px;flex-shrink:0;border-radius:50%;
  background:var(--blue-l);color:var(--blue);
  display:grid;place-items:center;font-size:16px;line-height:1;
  transition:transform .22s var(--ease),background .22s var(--ease),color .22s var(--ease);
}
.faq-item.open .faq-icon{background:var(--blue);color:#fff;transform:rotate(180deg);}
.faq-a{
  max-height:0;opacity:0;overflow:hidden;
  padding:0 24px;
  transition:max-height .22s var(--ease),opacity .22s var(--ease),padding .22s var(--ease);
}
.faq-item.open .faq-a{padding-bottom:20px;opacity:1;}
.faq-a p{font-size:15px;color:var(--ink-2);line-height:1.85;}
.faq-more{margin-top:22px;}

/* ============ cta ============ */
.cta-band{
  background:var(--blue-l);
  border-radius:var(--r-lg);
  padding:56px 40px;
  text-align:center;
  border:1px solid rgba(22,86,214,.12);
}
.cta-band h2{font-size:clamp(22px,2.8vw,32px);}
.cta-band p{margin:16px auto 0;max-width:560px;color:var(--ink-2);font-size:15.5px;}
.cta-band .btn{margin-top:28px;}
.cta-note{margin-top:16px;font-size:13px;color:var(--ink-3);}

/* ============ footer ============ */
.site-footer{background:#fff;border-top:1px solid var(--line);margin-top:var(--sec);}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;
  padding:64px 0 44px;
}
.footer-brand .brand{margin-bottom:18px;}
.footer-brand p{font-size:14.5px;color:var(--ink-2);max-width:300px;}
.footer-contact{margin-top:12px;font-size:14px;color:var(--ink-3);}
.footer-col h4{font-size:15px;margin-bottom:16px;}
.footer-col li+li{margin-top:10px;}
.footer-col a{font-size:14.5px;color:var(--ink-2);transition:color .2s var(--ease);}
.footer-col a:hover{color:var(--blue);text-decoration:underline;}
.footer-bottom{
  display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;
  padding:20px 0 30px;border-top:1px solid var(--line);
  font-size:13.5px;color:var(--ink-3);
}
.fb-links{display:flex;gap:18px;}
.fb-links a{color:var(--ink-3);}
.fb-links a:hover{color:var(--blue);text-decoration:underline;}

/* ============ drawer ============ */
.drawer{position:fixed;inset:0;z-index:150;visibility:hidden;pointer-events:none;}
.drawer.open{visibility:visible;pointer-events:auto;}
.drawer-mask{
  position:absolute;inset:0;background:rgba(13,27,42,.45);
  opacity:0;transition:opacity .22s var(--ease);
}
.drawer.open .drawer-mask{opacity:1;}
.drawer-panel{
  position:absolute;top:0;right:0;bottom:0;width:min(340px,88%);
  background:rgba(255,255,255,.97);
  -webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
  box-shadow:-24px 0 44px -32px rgba(13,27,42,.6);
  padding:20px 24px 24px;
  display:flex;flex-direction:column;
  transform:translateX(100%);
  transition:transform .26s var(--ease);
}
.drawer.open .drawer-panel{transform:translateX(0);}
.drawer-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px;}
.drawer-nav{margin-top:8px;flex:1;overflow-y:auto;}
.drawer-nav a{
  display:block;font-size:18px;line-height:56px;
  border-bottom:1px solid var(--line);color:var(--ink-2);
}
.drawer-nav a.active{color:var(--blue);font-weight:600;}
.drawer-foot{padding-top:18px;}

/* ============ modal ============ */
.modal{position:fixed;inset:0;z-index:200;visibility:hidden;pointer-events:none;}
.modal.open{visibility:visible;pointer-events:auto;}
.modal-mask{
  position:absolute;inset:0;background:rgba(13,27,42,.5);
  -webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);
  opacity:0;transition:opacity .22s var(--ease);
}
.modal.open .modal-mask{opacity:1;}
.modal-card{
  position:relative;
  width:min(480px,calc(100% - 32px));
  max-height:88vh;overflow-y:auto;
  margin:6vh auto;background:#fff;border-radius:18px;
  padding:30px 28px;box-shadow:0 30px 60px -30px rgba(13,27,42,.6);
  transform:translateY(14px);opacity:0;
  transition:transform .24s var(--ease),opacity .24s var(--ease);
}
.modal.open .modal-card{transform:translateY(0);opacity:1;}
.modal-close{
  position:absolute;top:16px;right:16px;
  width:34px;height:34px;border-radius:10px;border:1px solid var(--line);
  background:#fff;color:var(--ink-2);display:grid;place-items:center;
}
.modal-close:hover{color:var(--blue);background:var(--blue-l);border-color:rgba(22,86,214,.3);}
.modal-card h2{font-size:22px;}
.modal-card .modal-sub{margin-top:10px;font-size:14.5px;color:var(--ink-2);}
.field{margin-top:16px;}
.field label{display:block;font-size:14px;color:var(--ink-2);margin-bottom:8px;}
.input,select,textarea{
  width:100%;height:48px;padding:0 14px;
  border:1px solid var(--line);border-radius:var(--r-btn);
  background:#fff;color:var(--ink);font-size:15px;font-family:inherit;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
textarea{height:auto;min-height:104px;padding:12px 14px;line-height:1.7;resize:vertical;}
.input:focus,select:focus,textarea:focus{
  outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(22,86,214,.14);
}
select{
  appearance:none;-webkit-appearance:none;
  background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2346586E' stroke-width='2' stroke-linecap='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 14px center;background-size:18px;
  padding-right:42px;
}
.field .err{display:none;margin-top:6px;font-size:13px;color:#D64545;}
.field.error .input,.field.error select,.field.error textarea{border-color:#D64545;}
.field.error .err{display:block;}
.check-row{display:flex;gap:10px;align-items:flex-start;margin-top:18px;}
.check-row input{width:18px;height:18px;margin-top:3px;flex-shrink:0;accent-color:var(--blue);}
.check-row span{font-size:13.5px;color:var(--ink-2);line-height:1.7;}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  html{scroll-behavior:auto;}
}

/* ============ responsive ============ */
@media (max-width:1279px){
  .data-grid{grid-template-columns:repeat(2,1fr);gap:34px 0;}
  .data-item{padding:0 26px;}
  .data-item:nth-child(odd){padding-left:0;}
  .data-item:nth-child(odd){border-left:0;}
}
@media (max-width:1023px){
  :root{--sec:72px;}
  .main-nav{display:none;}
  .burger{display:grid;}
  .faq-wrap{grid-template-columns:1fr;gap:28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .check-grid{grid-template-columns:1fr;}
}
@media (max-width:767px){
  :root{--sec:56px;}
  .container{padding:0 20px;}
  body{font-size:15.5px;}
  .header-inner{height:60px;gap:12px;}
  .brand-text strong{font-size:15px;}
  .brand-text em{font-size:10px;letter-spacing:.1em;}
  .header-actions .btn-sm{display:none;}
  .page-hero{padding-top:110px;}
  .hero-cta{flex-direction:column;}
  .hero-cta .btn{width:100%;}
  .hero-strip{gap:12px 20px;}
  .hero-figure{margin-top:36px;border-radius:16px;}
  .hero-figure img{aspect-ratio:16/10;}
  .hero-pad{height:56px;}
  .step{grid-template-columns:52px 1fr;gap:16px;padding-bottom:20px;}
  .step::before{left:25px;top:54px;}
  .step-num{width:52px;height:52px;font-size:15px;}
  .step-body{padding:20px;}
  .data-band{padding:36px 24px;border-radius:18px;}
  .data-grid{grid-template-columns:1fr 1fr;gap:0;}
  .data-item{padding:20px 0;border-left:0 !important;}
  .data-item+.data-item{border-left:0;}
  .data-num{font-size:34px;}
  .cta-band{padding:40px 22px;border-radius:18px;}
  .cta-band .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding:44px 0 30px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .modal-card{margin:0;width:100%;max-height:100%;height:100%;border-radius:0;padding:26px 20px 100px;}
  .modal-card .submit-bar{
    position:fixed;left:0;right:0;bottom:0;padding:14px 20px 20px;
    background:#fff;border-top:1px solid var(--line);
  }
  .faq-q{padding:18px 20px;font-size:16px;}
  .faq-a{padding:0 20px;}
}
@media (max-width:400px){
  .container{padding:0 16px;}
  .data-grid{grid-template-columns:1fr;}
  .data-item{padding:16px 0;}
  .page-hero h1{font-size:27px;}
}

/* roulang page: category3 */
:root{
  --c-primary:#1656D6;
  --c-primary-deep:#0E3FA8;
  --c-primary-soft:#E9F1FF;
  --c-accent:#FF7A2F;
  --c-accent-soft:#FFF0E6;
  --c-teal:#00A79D;
  --t-ink:#0D1B2A;
  --t-body:#46586E;
  --t-muted:#7B8CA3;
  --line:#E4EAF3;
  --page:#F6F8FC;
  --surface:#FFFFFF;
  --deep:#0A1A31;
  --r-card:14px;
  --r-block:22px;
  --r-btn:10px;
  --r-input:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(13,27,42,.04),0 10px 24px -16px rgba(13,27,42,.14);
  --sh-2:0 16px 36px -18px rgba(22,86,214,.28);
  --ease:cubic-bezier(.2,.7,.3,1);
  --dur:200ms;
  --container:1200px;
  --gap:24px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--t-body);
  background:var(--page);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:var(--c-primary);text-decoration:none;transition:color var(--dur) var(--ease)}
a:hover{color:var(--c-primary-deep)}
h1,h2,h3,h4{color:var(--t-ink);margin:0 0 .6em;font-weight:700}
h1{font-size:clamp(30px,4.2vw,50px);line-height:1.18;margin-bottom:.5em}
h2{font-size:clamp(24px,3vw,36px);line-height:1.25}
h3{font-size:20px;line-height:1.4}
h4{font-size:17px;line-height:1.5;margin-bottom:.5em}
p{margin:0 0 1.2em}
ul{margin:0 0 1.2em;padding-left:1.2em}
li{margin-bottom:.4em}
button{font-family:inherit;font-size:inherit;cursor:pointer}
input,select,textarea{font-family:inherit;font-size:16px}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section-sm{padding:64px 0}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--c-primary-soft);color:var(--c-primary-deep);
  font-size:13px;font-weight:600;line-height:1;
  padding:8px 14px;border-radius:var(--r-pill);margin-bottom:18px;
}
.eyebrow.orange{background:var(--c-accent-soft);color:#B8480E}
.section-head{max-width:720px;margin-bottom:44px}
.section-head p{margin-bottom:0;font-size:16px}
.muted{color:var(--t-muted);font-size:14px}

/* header */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:120;
  background:rgba(255,255,255,.55);
  backdrop-filter:blur(16px) saturate(150%);
  -webkit-backdrop-filter:blur(16px) saturate(150%);
  border-bottom:1px solid rgba(255,255,255,.6);
  box-shadow:0 8px 24px -16px rgba(13,27,42,.25);
  transition:background var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.site-header.is-stuck{
  background:rgba(255,255,255,.94);
  border-bottom-color:var(--line);
  box-shadow:0 10px 28px -18px rgba(13,27,42,.35);
}
.header-inner{display:flex;align-items:center;gap:24px;height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:36px;height:36px;border-radius:10px;flex-shrink:0;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,var(--c-primary),var(--c-primary-deep));
  color:#fff;box-shadow:0 8px 18px -10px rgba(22,86,214,.7);
}
.brand-mark svg{width:20px;height:20px}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:16px;color:var(--t-ink);font-weight:700;letter-spacing:.01em}
.brand-text em{font-style:normal;font-size:11px;color:var(--t-muted);letter-spacing:.14em}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:auto}
.main-nav a{
  position:relative;padding:8px 12px;border-radius:8px;
  font-size:15px;color:var(--t-body);white-space:nowrap;
}
.main-nav a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:0;height:2px;
  background:var(--c-primary);border-radius:2px;transform:scaleX(0);
  transform-origin:left;transition:transform var(--dur) var(--ease);
}
.main-nav a:hover{color:var(--c-primary-deep);background:rgba(233,241,255,.7)}
.main-nav a.active{color:var(--c-primary);font-weight:600}
.main-nav a.active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.icon-btn{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
  background:#fff;color:var(--t-body);
  display:inline-flex;align-items:center;justify-content:center;
  transition:all var(--dur) var(--ease);
}
.icon-btn:hover{border-color:rgba(22,86,214,.4);color:var(--c-primary);background:var(--c-primary-soft)}
.burger{display:none;flex-direction:column;justify-content:center;gap:4px}
.burger span{display:block;width:18px;height:2px;background:var(--t-ink);border-radius:2px;transition:all var(--dur) var(--ease)}

/* buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  border:1px solid transparent;font-size:15px;font-weight:600;line-height:1;
  text-decoration:none;white-space:nowrap;
  transition:all var(--dur) var(--ease);
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 10px 22px -14px rgba(22,86,214,.9)}
.btn-primary:hover{background:var(--c-primary-deep);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:#fff;color:var(--c-primary);border-color:rgba(22,86,214,.4)}
.btn-ghost:hover{background:var(--c-primary-soft);color:var(--c-primary-deep);transform:translateY(-2px)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:15px}
.link-arrow svg{transition:transform var(--dur) var(--ease)}
.link-arrow:hover svg{transform:translateX(3px)}

/* hero */
.page-hero{
  position:relative;padding:150px 0 64px;overflow:hidden;
  background:
    linear-gradient(180deg,rgba(246,248,252,.92),rgba(246,248,252,.98)),
    url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
}
.page-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(22,86,214,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(22,86,214,.05) 1px,transparent 1px);
  background-size:48px 48px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.55),transparent 80%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.55),transparent 80%);
}
.page-hero .container{position:relative;z-index:2}
.crumb{font-size:14px;color:var(--t-muted);margin-bottom:20px;display:flex;flex-wrap:wrap;gap:6px}
.crumb a{color:var(--t-muted)}
.crumb a:hover{color:var(--c-primary)}
.crumb span.sep{opacity:.6}
.crumb span.now{color:var(--t-body)}
.hero-lead{max-width:760px}
.hero-lead p.lead{font-size:17px;color:var(--t-body);max-width:640px}
.hero-stats{display:flex;flex-wrap:wrap;gap:32px;margin-top:32px;padding-top:26px;border-top:1px solid var(--line)}
.hero-stat strong{display:block;font-size:26px;color:var(--t-ink);font-variant-numeric:tabular-nums;line-height:1.2}
.hero-stat span{font-size:13px;color:var(--t-muted)}

/* filter tabs */
.filter-bar{
  display:flex;flex-wrap:wrap;gap:10px;
  margin-top:34px;padding:12px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-block);box-shadow:var(--sh-1);
}
.filter-bar a{
  display:inline-flex;align-items:center;height:38px;padding:0 16px;border-radius:var(--r-pill);
  background:#F3F6FC;color:var(--t-body);font-size:14px;font-weight:600;
  transition:all var(--dur) var(--ease);
}
.filter-bar a:hover{background:var(--c-primary-soft);color:var(--c-primary-deep)}
.filter-bar a.is-on{background:var(--c-primary);color:#fff;box-shadow:0 8px 18px -12px rgba(22,86,214,.9)}

/* zigzag */
.scene{scroll-margin-top:110px;padding:8px 0 0}
.scene-row{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
  padding:52px 0;border-bottom:1px dashed var(--line);
}
.scene-row:last-child{border-bottom:0}
.scene-row.reverse .scene-media{order:2}
.scene-media{position:relative}
.scene-media img{border-radius:16px;width:100%;aspect-ratio:16/10;object-fit:cover;box-shadow:var(--sh-1);transition:transform 240ms var(--ease)}
.scene-media:hover img{transform:scale(1.03)}
.scene-media::after{
  content:"";position:absolute;left:-12px;bottom:-12px;width:120px;height:120px;
  border-radius:24px;background:var(--c-primary-soft);z-index:-1;
}
.scene-num{
  display:inline-block;font-size:13px;font-weight:700;color:var(--c-primary);
  background:var(--c-primary-soft);border-radius:var(--r-pill);padding:6px 14px;margin-bottom:14px;
}
.scene-body h3{margin-bottom:.5em}
.tick-list{list-style:none;padding:0;margin:18px 0 0}
.tick-list li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--t-body);margin-bottom:10px}
.tick-list svg{flex-shrink:0;margin-top:5px;color:var(--c-teal)}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--r-pill);
  font-size:12.5px;font-weight:600;background:#F1F4FA;color:var(--t-body);
}
.tag.blue{background:var(--c-primary-soft);color:var(--c-primary-deep)}
.tag.orange{background:var(--c-accent-soft);color:#B8480E}

/* promise card */
.promise{
  display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-block);
  padding:44px;box-shadow:var(--sh-1);
}
.promise-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.promise-item{
  background:var(--page);border:1px solid var(--line);border-radius:var(--r-card);
  padding:18px 20px;
}
.promise-item strong{display:block;color:var(--t-ink);font-size:15px;margin-bottom:4px}
.promise-item span{font-size:13.5px;color:var(--t-muted);line-height:1.7;display:block}

/* faq */
.faq-wrap{display:grid;grid-template-columns:1fr 1.55fr;gap:56px;align-items:start}
.faq-list{background:#fff;border:1px solid var(--line);border-radius:var(--r-block);overflow:hidden;box-shadow:var(--sh-1)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:last-child{border-bottom:0}
.faq-q{
  width:100%;background:none;border:0;text-align:left;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;font-size:17px;font-weight:600;color:var(--t-ink);line-height:1.6;
  transition:background var(--dur) var(--ease);
}
.faq-q:hover{background:#FAFCFF}
.faq-q .pm{
  flex-shrink:0;width:26px;height:26px;border-radius:50%;
  background:var(--c-primary-soft);color:var(--c-primary-deep);
  display:inline-flex;align-items:center;justify-content:center;font-size:16px;font-weight:700;
  transition:transform var(--dur) var(--ease),background var(--dur) var(--ease);
}
.faq-item.open .faq-q .pm{transform:rotate(45deg);background:var(--c-primary);color:#fff}
.faq-a{max-height:0;overflow:hidden;opacity:0;transition:max-height 220ms var(--ease),opacity 220ms var(--ease)}
.faq-item.open .faq-a{max-height:360px;opacity:1}
.faq-a p{margin:0;padding:0 24px 22px;font-size:15px;color:var(--t-body);line-height:1.85}

/* cta band */
.cta-band{
  background:var(--c-primary-soft);border:1px solid rgba(22,86,214,.16);
  border-radius:var(--r-block);padding:46px 44px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
}
.cta-band h3{margin-bottom:6px}
.cta-band p{margin:0;font-size:15px;color:var(--t-body)}
.cta-band .cta-actions{display:flex;flex-wrap:wrap;gap:12px}
.privacy-note{font-size:13px;color:var(--t-muted);margin:12px 0 0}
.privacy-note a{text-decoration:underline}

/* footer */
.site-footer{background:var(--deep);color:#B9C6D8;margin-top:96px;padding:72px 0 0}
.site-footer .brand-text strong{color:#fff}
.site-footer .brand-text em{color:#8FA2BB}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px}
.footer-brand p{font-size:14px;color:#93A5BE;margin:18px 0 0;max-width:320px}
.footer-contact{color:#7E93AF;font-size:13.5px}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px}
.footer-col ul{list-style:none;padding:0;margin:0}
.footer-col li{margin-bottom:10px}
.footer-col a{color:#B9C6D8;font-size:14px}
.footer-col a:hover{color:#fff;text-decoration:underline}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:22px 0;
  display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;align-items:center;
  font-size:13.5px;color:#8FA2BB;
}
.fb-links{display:flex;gap:18px}
.fb-links a{color:#8FA2BB}
.fb-links a:hover{color:#fff}

/* modal */
.modal-mask{
  position:fixed;inset:0;z-index:200;display:none;
  background:rgba(13,27,42,.5);backdrop-filter:blur(2px);
  -webkit-backdrop-filter:blur(2px);
  padding:24px;overflow-y:auto;
}
.modal-mask.show{display:flex;align-items:center;justify-content:center}
.modal-card{
  position:relative;width:100%;max-width:480px;background:#fff;border-radius:var(--r-block);
  padding:32px;box-shadow:0 30px 60px -30px rgba(13,27,42,.6);
  animation:pop 220ms var(--ease);
}
@keyframes pop{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}
.modal-close{
  position:absolute;top:14px;right:14px;width:34px;height:34px;border-radius:10px;
  border:1px solid var(--line);background:#fff;color:var(--t-body);
  display:inline-flex;align-items:center;justify-content:center;font-size:18px;line-height:1;
}
.modal-close:hover{background:var(--page);color:var(--t-ink)}

/* form */
.field{margin-bottom:16px}
.field label{display:block;font-size:13.5px;font-weight:600;color:var(--t-ink);margin-bottom:7px}
.field .ctrl{
  width:100%;height:48px;border:1px solid var(--line);border-radius:var(--r-input);
  padding:0 14px;background:#fff;color:var(--t-ink);
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
textarea.ctrl{height:auto;min-height:96px;padding:12px 14px;line-height:1.7;resize:vertical}
.field .ctrl:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(22,86,214,.14)}
.field.error .ctrl{border-color:#D64545}
.field .err{display:none;font-size:13px;color:#D64545;margin-top:6px}
.field.error .err{display:block}
.check{display:flex;gap:10px;align-items:flex-start;font-size:13.5px;color:var(--t-body)}
.check input{margin-top:4px;width:16px;height:16px;accent-color:var(--c-primary)}
.form-note{font-size:13px;color:var(--t-muted);margin-top:10px}
.form-note a{text-decoration:underline}
.form-success{
  display:none;background:var(--c-primary-soft);border:1px solid rgba(22,86,214,.2);
  border-radius:var(--r-card);padding:16px 18px;font-size:14px;color:var(--c-primary-deep);margin-bottom:16px;
}
.form-success.show{display:block}

/* mobile drawer */
@media (max-width:1023px){
  .main-nav{
    position:fixed;top:0;right:0;bottom:0;width:min(84vw,360px);
    background:rgba(255,255,255,.96);
    backdrop-filter:blur(18px) saturate(150%);
    -webkit-backdrop-filter:blur(18px) saturate(150%);
    border-left:1px solid var(--line);
    box-shadow:-24px 0 48px -30px rgba(13,27,42,.5);
    flex-direction:column;align-items:stretch;gap:0;
    padding:88px 20px 120px;margin:0;overflow-y:auto;
    transform:translateX(102%);transition:transform 240ms var(--ease);
    z-index:130;
  }
  .main-nav.open{transform:translateX(0)}
  .main-nav a{font-size:18px;line-height:56px;padding:0 8px;border-radius:10px}
  .main-nav a::after{display:none}
  .main-nav a.active{background:var(--c-primary-soft)}
  .burger{display:inline-flex}
  body.nav-open{overflow:hidden}
  .header-inner{height:60px}
  .scene-row{grid-template-columns:1fr;gap:28px;padding:40px 0}
  .scene-row.reverse .scene-media{order:0}
  .promise{grid-template-columns:1fr;padding:30px}
  .faq-wrap{grid-template-columns:1fr;gap:28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .section{padding:72px 0}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .header-actions .btn-sm{display:none}
  .page-hero{padding:120px 0 48px}
  .section{padding:56px 0}
  .section-sm{padding:48px 0}
  .hero-stats{gap:20px}
  .hero-stat{flex:1 1 40%}
  .promise-grid{grid-template-columns:1fr}
  .cta-band{padding:30px 24px;flex-direction:column;align-items:flex-start}
  .cta-band .btn{width:100%}
  .modal-mask{padding:0;align-items:stretch}
  .modal-card{max-width:none;min-height:100%;border-radius:0;padding:26px 20px 120px}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:400px){
  .container{padding:0 16px}
  body{font-size:15.5px}
  .brand-text strong{font-size:15px}
  .filter-bar a{height:34px;padding:0 12px;font-size:13px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .scene-media:hover img{transform:none}
  .btn:hover{transform:none}
}