/* roulang page: index */
:root{
  --brand-800:#123E66;
  --brand-700:#1B5E96;
  --brand-500:#2C85C4;
  --brand-100:#E4EFF8;
  --brand-50:#F3F8FC;
  --accent-600:#D9772A;
  --accent-100:#FCEEE0;
  --ink-900:#152430;
  --ink-700:#34495B;
  --ink-500:#6B7E8D;
  --line:#DDE7F0;
  --bg:#F6F9FC;
  --surface:#FFFFFF;
  --success:#2E8B6B;
  --warning:#D9A227;
  --danger:#C0503F;
  --r-lg:24px;
  --r-md:16px;
  --r-sm:10px;
  --r-img:12px;
  --r-hero:20px;
  --sh1:0 1px 2px rgba(18,62,102,.06);
  --sh2:0 10px 26px -14px rgba(18,62,102,.20);
  --sh3:0 18px 40px -16px rgba(18,62,102,.28);
  --ease:cubic-bezier(.2,.7,.3,1);
  --bs-primary:#1B5E96;
  --bs-body-color:#34495B;
  --bs-border-radius:10px;
  --bs-font-sans-serif:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:17px;
  line-height:1.8;
  color:var(--ink-700);
  background:var(--bg);
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand-700);text-decoration:none;transition:color .18s var(--ease);}
a:hover{color:var(--brand-500);}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4{color:var(--ink-900);margin:0;font-weight:700;letter-spacing:-.2px;}
h1{font-size:44px;line-height:1.25;}
h2{font-size:32px;line-height:1.3;}
h3{font-size:22px;font-weight:600;line-height:1.4;}
h4{font-size:18px;font-weight:600;line-height:1.5;}
p{margin:0 0 1.1em;max-width:760px;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(44,133,196,.35);border-radius:6px;}
.container{max-width:1200px;margin:0 auto;padding:0 32px;width:100%;}
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.bg-white{background:var(--surface);}
.bg-soft{background:var(--brand-50);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--brand-100);color:var(--brand-700);
  font-size:13px;font-weight:600;line-height:1;
  padding:9px 15px;border-radius:999px;
}
.eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--brand-500);display:inline-block;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap;}
.section-head .lead{color:var(--ink-500);font-size:15px;margin-top:10px;max-width:620px;}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--brand-700);white-space:nowrap;}
.text-link:hover{gap:10px;color:var(--brand-500);}
.text-link svg{width:16px;height:16px;}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-sm);font-size:15px;font-weight:600;
  border:1.5px solid transparent;transition:all .18s var(--ease);cursor:pointer;line-height:1;text-align:center;}
.btn:focus,.btn:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(44,133,196,.35);}
.btn-primary{background:var(--brand-700);color:#fff;box-shadow:var(--sh1);}
.btn-primary:hover{background:var(--brand-500);color:#fff;box-shadow:var(--sh3);transform:translateY(-1px);}
.btn-accent{background:var(--accent-600);color:#fff;box-shadow:var(--sh1);}
.btn-accent:hover{background:#c2671f;color:#fff;box-shadow:var(--sh3);transform:translateY(-1px);}
.btn-outline{background:#fff;border-color:var(--line);color:var(--brand-700);}
.btn-outline:hover{background:var(--brand-50);border-color:var(--brand-500);color:var(--brand-700);}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.55);color:#fff;}
.btn-outline-light:hover{background:rgba(255,255,255,.12);border-color:#fff;color:#fff;}
.btn-sm{height:36px;padding:0 16px;font-size:14px;}
.btn-block{width:100%;}
.btn svg{width:18px;height:18px;flex:none;}

/* ---------- header / nav ---------- */
.site-header{position:sticky;top:0;z-index:1030;padding:16px 0 0;transition:padding .22s var(--ease);}
.nav-card{
  display:flex;align-items:center;gap:20px;
  background:var(--surface);border:1px solid var(--line);border-radius:18px;
  box-shadow:var(--sh2);padding:12px 16px;height:76px;
  transition:height .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease);
}
.site-header.is-scrolled{padding-top:10px;}
.site-header.is-scrolled .nav-card{height:64px;box-shadow:var(--sh1);background:rgba(255,255,255,.94);backdrop-filter:blur(6px);}
.brand{display:flex;align-items:center;gap:10px;flex:none;}
.brand-mark{position:relative;width:34px;height:34px;flex:none;display:block;}
.brand-mark i{position:absolute;display:block;border-radius:4px;background:var(--brand-700);}
.brand-mark i:nth-child(1){width:18px;height:18px;left:0;top:0;}
.brand-mark i:nth-child(2){width:12px;height:12px;right:0;top:4px;background:var(--brand-500);}
.brand-mark i:nth-child(3){width:22px;height:8px;left:0;bottom:2px;background:var(--accent-600);}
.brand-text{font-size:18px;font-weight:700;color:var(--brand-700);letter-spacing:-.2px;white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:8px;margin-left:8px;flex:1 1 auto;min-width:0;}
.nav-item{
  display:flex;align-items:center;justify-content:center;gap:6px;
  height:44px;min-width:112px;padding:0 14px;border-radius:12px;
  background:var(--brand-50);border:1px solid transparent;
  font-size:14px;font-weight:600;color:var(--ink-700);white-space:nowrap;
  transition:all .18s var(--ease);
}
.nav-item svg{width:18px;height:18px;color:var(--brand-500);flex:none;}
.nav-item:hover{background:var(--brand-100);color:var(--brand-700);transform:translateY(-1px);}
.nav-item.active{background:var(--brand-100);color:var(--brand-700);border-color:var(--brand-700);border-width:1.5px;}
.nav-cta{flex:none;margin-left:auto;}
.nav-toggle{display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:var(--brand-50);align-items:center;justify-content:center;cursor:pointer;}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--brand-700);position:relative;}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--brand-700);}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ---------- hero ---------- */
.hero{position:relative;background:var(--bg);padding:64px 0 96px;overflow:hidden;}
.hero::after{
  content:"";position:absolute;top:-120px;right:-140px;width:480px;height:480px;
  background:linear-gradient(135deg,rgba(44,133,196,.12),rgba(228,239,248,0) 70%);
  transform:rotate(14deg);border-radius:56px;pointer-events:none;
}
.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;min-height:520px;}
.hero h1{margin:20px 0 18px;max-width:640px;}
.hero h1 em{font-style:normal;color:var(--brand-700);}
.hero-sub{font-size:19px;line-height:1.7;color:var(--ink-700);max-width:560px;margin-bottom:30px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px;}
.trust-list{display:flex;flex-wrap:wrap;align-items:center;gap:18px;padding-top:22px;border-top:1px solid var(--line);}
.trust-item{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-700);font-weight:500;}
.trust-item svg{width:18px;height:18px;color:var(--brand-500);flex:none;}
.trust-sep{width:1px;height:18px;background:var(--line);}
.hero-media{position:relative;}
.hero-media img{border-radius:var(--r-hero);box-shadow:var(--sh2);aspect-ratio:16/11;object-fit:cover;width:100%;}
.float-card{
  position:absolute;right:-10px;bottom:-26px;width:240px;
  background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--sh3);
  padding:16px 18px;
}
.float-card .num{font-family:Inter,system-ui,sans-serif;font-size:26px;font-weight:700;color:var(--brand-700);line-height:1.1;}
.float-card .cap{font-size:13px;color:var(--ink-500);margin-top:4px;}

/* ---------- steps ---------- */
.steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;position:relative;}
.step-card{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-md);box-shadow:var(--sh2);padding:24px;transition:all .18s var(--ease);}
.step-card:hover{transform:translateY(-2px);box-shadow:var(--sh3);}
.step-no{
  width:40px;height:40px;border-radius:12px;background:var(--accent-600);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-family:Inter,system-ui,sans-serif;font-size:16px;font-weight:700;margin-bottom:18px;
}
.step-card h3{font-size:18px;margin-bottom:10px;}
.step-card p{font-size:14px;line-height:1.7;color:var(--ink-500);margin-bottom:16px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.step-note{font-size:13px;color:var(--brand-700);font-weight:600;padding-top:14px;border-top:1px dashed var(--line);}
.steps-connector{position:absolute;top:44px;left:0;right:0;height:1px;border-top:1px dashed var(--line);z-index:0;}

/* ---------- cases ---------- */
.case-grid{display:grid;grid-template-columns:7fr 5fr;gap:24px;align-items:stretch;}
.case-main{background:#fff;border:1px solid var(--line);border-radius:var(--r-md);box-shadow:var(--sh2);overflow:hidden;display:flex;flex-direction:column;}
.case-main img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.case-main .body{padding:24px;}
.badge{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;font-size:13px;font-weight:600;background:var(--brand-100);color:var(--brand-700);line-height:1;}
.badge-accent{background:var(--accent-100);color:var(--accent-600);}
.case-stat{display:flex;align-items:baseline;gap:10px;margin:16px 0 10px;}
.case-stat .num{font-family:Inter,system-ui,sans-serif;font-size:34px;font-weight:700;color:var(--brand-700);line-height:1;}
.case-stat .unit{font-size:14px;color:var(--ink-500);}
.case-quote{border-left:3px solid var(--accent-600);padding:4px 0 4px 14px;font-size:15px;color:var(--ink-700);margin-top:14px;max-width:520px;}
.case-side{display:grid;grid-template-rows:1fr 1fr;gap:24px;}
.case-small{background:#fff;border:1px solid var(--line);border-radius:var(--r-md);box-shadow:var(--sh2);padding:24px;transition:all .18s var(--ease);}
.case-small:hover{transform:translateY(-2px);box-shadow:var(--sh3);}
.icon-sq{width:40px;height:40px;border-radius:12px;background:var(--brand-100);display:flex;align-items:center;justify-content:center;margin-bottom:16px;}
.icon-sq svg{width:20px;height:20px;color:var(--brand-700);}
.case-small h3{font-size:18px;margin-bottom:8px;}
.case-small p{font-size:14px;line-height:1.7;color:var(--ink-500);}

/* ---------- faq ---------- */
.faq-wrap{display:grid;grid-template-columns:1fr 240px;gap:32px;align-items:start;max-width:1160px;margin:0 auto;}
.faq-col{max-width:880px;}
.accordion-item{background:#fff;border:1px solid var(--line);border-radius:14px;margin-bottom:12px;box-shadow:var(--sh1);overflow:hidden;transition:box-shadow .22s var(--ease);}
.accordion-item:last-child{margin-bottom:0;}
.accordion-button{
  display:flex;align-items:center;gap:14px;width:100%;
  min-height:56px;padding:12px 20px;background:#fff;border:0;
  font-size:17px;font-weight:600;color:var(--ink-900);text-align:left;cursor:pointer;
}
.accordion-button:not(.collapsed){color:var(--brand-700);box-shadow:none;background:#fff;}
.accordion-button:focus{box-shadow:0 0 0 3px rgba(44,133,196,.28);border-radius:14px;}
.accordion-button::after{display:none;}
.q-icon{width:28px;height:28px;border-radius:8px;background:var(--brand-50);display:flex;align-items:center;justify-content:center;flex:none;transition:all .22s var(--ease);}
.q-icon svg{width:16px;height:16px;color:var(--brand-700);transition:transform .22s var(--ease);}
.accordion-button:not(.collapsed) .q-icon{background:var(--accent-100);}
.accordion-button:not(.collapsed) .q-icon svg{color:var(--accent-600);transform:rotate(45deg);}
.accordion-button .q-text{flex:1;}
.q-arrow{width:18px;height:18px;color:var(--ink-500);transition:transform .22s var(--ease);flex:none;}
.accordion-button:not(.collapsed) .q-arrow{transform:rotate(180deg);color:var(--brand-700);}
.accordion-body{padding:0 20px 22px 62px;font-size:15px;line-height:1.85;color:var(--ink-700);}
.accordion-item:has(.accordion-button:not(.collapsed)){border-left:3px solid var(--brand-700);box-shadow:var(--sh2);}
.faq-aside{background:#fff;border:1.5px solid var(--brand-700);border-radius:var(--r-md);padding:22px;box-shadow:var(--sh1);}
.faq-aside h4{font-size:17px;margin-bottom:8px;}
.faq-aside p{font-size:13px;color:var(--ink-500);line-height:1.7;margin-bottom:16px;}

/* ---------- apply ---------- */
.apply-box{background:var(--brand-100);border-radius:var(--r-lg);padding:40px;display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start;}
.apply-box h2{margin-bottom:14px;}
.apply-box p{color:var(--ink-700);font-size:16px;}
.check-list{margin-top:22px;display:grid;gap:14px;}
.check-list li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--ink-700);line-height:1.7;}
.check-box{width:18px;height:18px;border-radius:6px;background:var(--brand-700);display:flex;align-items:center;justify-content:center;flex:none;margin-top:4px;}
.check-box svg{width:12px;height:12px;color:#fff;}
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-md);box-shadow:var(--sh2);padding:28px;}
.form-row{margin-bottom:16px;}
.form-row label{display:block;font-size:14px;color:var(--ink-700);font-weight:600;margin-bottom:8px;}
.form-row .req{color:var(--accent-600);}
.form-control,.form-select{
  width:100%;height:44px;border-radius:var(--r-sm);border:1px solid var(--line);
  padding:0 14px;font-size:15px;color:var(--ink-900);background:#fff;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
textarea.form-control{height:96px;padding:12px 14px;resize:vertical;line-height:1.7;}
.form-control:focus,.form-select:focus{outline:none;border:2px solid var(--brand-500);box-shadow:0 0 0 3px rgba(44,133,196,.35);}
.form-hint{font-size:12px;color:var(--ink-500);margin-top:12px;line-height:1.6;}
.form-alert{display:none;margin-bottom:16px;font-size:14px;border-radius:var(--r-sm);padding:10px 14px;background:var(--brand-50);color:var(--brand-700);}
.form-alert.show{display:block;}

/* ---------- news ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--sh2);overflow:hidden;transition:all .18s var(--ease);color:inherit;height:100%;
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--sh3);color:inherit;}
.news-thumb{overflow:hidden;border-radius:var(--r-img) var(--r-img) 0 0;}
.news-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .3s 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-meta{display:flex;align-items:center;gap:10px;margin-bottom:12px;flex-wrap:wrap;}
.news-meta .date{font-size:13px;color:var(--ink-500);}
.news-card h3{font-size:17px;font-weight:600;line-height:1.55;margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-card:hover h3{color:var(--brand-700);}
.news-card p{font-size:14px;line-height:1.7;color:var(--ink-500);margin-bottom:18px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-foot{margin-top:auto;padding-top:14px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:12px;}
.news-foot .time{display:flex;align-items:center;gap:6px;font-size:14px;color:var(--ink-500);}
.news-foot .time svg{width:16px;height:16px;color:var(--brand-500);}
.news-foot .more{display:inline-flex;align-items:center;gap:5px;font-size:14px;font-weight:600;color:var(--brand-700);transition:gap .18s var(--ease);}
.news-card:hover .news-foot .more{gap:9px;}
.empty-state{
  background:#fff;border:1px dashed var(--line);border-radius:var(--r-md);
  padding:48px 24px;text-align:center;box-shadow:var(--sh1);
}
.empty-state .icon{width:48px;height:48px;border-radius:50%;background:var(--brand-100);display:flex;align-items:center;justify-content:center;margin:0 auto 16px;}
.empty-state .icon svg{width:24px;height:24px;color:var(--brand-500);}
.empty-state p{font-size:16px;color:var(--ink-700);margin-bottom:18px;}

/* ---------- cta band ---------- */
.cta-band{background:var(--brand-800);border-radius:var(--r-lg);padding:40px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
.cta-band h2{color:#fff;font-size:30px;margin-bottom:10px;}
.cta-band p{color:rgba(255,255,255,.78);font-size:15px;margin:0;}
.cta-band .actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- footer ---------- */
.site-footer{background:var(--brand-800);color:rgba(255,255,255,.9);margin-top:96px;padding-top:64px;}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.2fr;gap:32px;padding-bottom:48px;}
.footer-brand .brand-text{color:#fff;}
.footer-brand .brand-mark i:nth-child(1),.footer-brand .brand-mark i:nth-child(2){background:#7FB4DC;}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.72);margin:18px 0 20px;max-width:360px;}
.footer-contact-line{display:flex;align-items:center;gap:10px;font-size:13px;color:rgba(255,255,255,.78);margin-bottom:10px;}
.footer-contact-line svg{width:16px;height:16px;color:#7FB4DC;flex:none;}
.site-footer h4{color:#fff;font-size:16px;margin-bottom:18px;font-weight:600;}
.footer-links li{margin-bottom:12px;}
.footer-links a{color:rgba(255,255,255,.72);font-size:14px;}
.footer-links a:hover{color:#fff;}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);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,.6);}
.footer-bottom a{color:rgba(255,255,255,.6);}
.footer-bottom a:hover{color:#fff;}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  h1{font-size:38px;}
  h2{font-size:28px;}
  .section{padding:72px 0;}
  .hero{padding:48px 0 72px;}
  .hero-grid{grid-template-columns:1fr;gap:40px;min-height:auto;}
  .hero h1{max-width:none;}
  .hero-media{max-width:640px;}
  .float-card{right:8px;bottom:-20px;}
  .news-grid{grid-template-columns:repeat(3,1fr);gap:20px;}
  .faq-wrap{grid-template-columns:1fr;}
  .faq-aside{display:none;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:991px){
  .container{padding:0 24px;}
  .nav-links{
    position:absolute;top:calc(100% + 12px);left:0;right:0;
    display:none;grid-template-columns:1fr 1fr;gap:10px;padding:16px;
    background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--sh3);margin:0;
  }
  .nav-links.is-open{display:grid;}
  .nav-item{min-width:0;width:100%;height:48px;}
  .nav-card{position:relative;justify-content:space-between;}
  .nav-toggle{display:flex;}
  .nav-cta .btn{display:none;}
  .case-grid{grid-template-columns:1fr;}
  .apply-box{grid-template-columns:1fr;padding:32px;gap:28px;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .steps-grid{grid-template-columns:1fr;gap:16px;padding-left:20px;}
  .steps-grid::before{content:"";position:absolute;left:6px;top:8px;bottom:8px;width:2px;background:var(--brand-100);}
  .steps-connector{display:none;}
  .cta-band{padding:32px;}
}
@media (max-width:767px){
  body{font-size:16px;}
  h1{font-size:30px;}
  h2{font-size:24px;}
  h3{font-size:18px;}
  .section{padding:56px 0;}
  .hero{padding:32px 0 56px;}
  .hero-sub{font-size:17px;}
  .float-card{position:static;width:100%;margin-top:16px;}
  .news-grid{grid-template-columns:1fr;}
  .section-head{margin-bottom:28px;}
  .apply-box{padding:24px;}
  .form-card{padding:20px;}
  .cta-band{padding:24px;border-radius:20px;}
  .cta-band h2{font-size:22px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px;}
  .site-footer{margin-top:56px;padding-top:48px;}
  .trust-list{gap:12px;}
  .trust-sep{display:none;}
  .case-stat .num{font-size:28px;}
}
@media (max-width:575px){
  .container{padding:0 20px;}
  .nav-links{grid-template-columns:1fr;}
  .btn{width:100%;}
  .hero-actions .btn{width:100%;}
  .cta-band .actions{width:100%;}
  .cta-band .actions .btn{width:100%;}
  .faq-aside{display:none;}
}

/* roulang page: article */
:root{
  --brand-800:#123E66;
  --brand-700:#1B5E96;
  --brand-500:#2C85C4;
  --brand-100:#E4EFF8;
  --brand-50:#F3F8FC;
  --accent-600:#D9772A;
  --accent-100:#FCEEE0;
  --ink-900:#152430;
  --ink-700:#34495B;
  --ink-500:#6B7E8D;
  --line:#DDE7F0;
  --bg:#F6F9FC;
  --surface:#FFFFFF;
  --success:#2E8B6B;
  --warning:#D9A227;
  --danger:#C0503F;
  --r-xl:24px;
  --r-lg:20px;
  --r-md:16px;
  --r-sm:12px;
  --r-btn:10px;
  --r-img:12px;
  --sh-1:0 1px 2px rgba(18,62,102,.06);
  --sh-2:0 10px 26px -14px rgba(18,62,102,.20);
  --sh-3:0 18px 40px -16px rgba(18,62,102,.28);
  --ease:cubic-bezier(.2,.7,.3,1);
  --bs-primary:#1B5E96;
  --bs-body-color:#34495B;
  --bs-body-bg:#F6F9FC;
  --bs-border-radius:10px;
  --bs-font-sans-serif:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --bs-link-color:#1B5E96;
  --bs-link-hover-color:#2C85C4;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-700);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--brand-700);text-decoration:none;}
a:hover{color:var(--brand-500);}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:none;
  box-shadow:0 0 0 3px rgba(44,133,196,.35);
  border-radius:var(--r-btn);
}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
@media (max-width:767.98px){.container{padding:0 20px;}}
h1,h2,h3,h4{color:var(--ink-900);margin:0;}
p{margin:0 0 1.1em;}
p:last-child{margin-bottom:0;}

/* Header / Nav */
.site-header{position:sticky;top:0;z-index:1030;padding-top:16px;transition:padding .2s var(--ease);}
.nav-card{
  position:relative;
  display:flex;align-items:center;gap:14px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:18px;
  box-shadow:var(--sh-2);
  min-height:76px;
  padding:10px 16px;
  transition:min-height .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.site-header.is-scrolled .nav-card{
  min-height:64px;
  box-shadow:var(--sh-1);
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(6px);
}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;text-decoration:none;}
.brand-mark{display:grid;grid-template-columns:1fr 1fr;grid-template-rows:1fr 1fr;gap:3px;width:32px;height:32px;}
.brand-mark i{display:block;border-radius:3px;background:var(--brand-700);}
.brand-mark i:nth-child(1){grid-row:span 2;border-radius:5px;}
.brand-mark i:nth-child(2){background:var(--brand-500);}
.brand-mark i:nth-child(3){background:var(--accent-600);}
.brand-text{font-size:17px;font-weight:700;color:var(--brand-700);letter-spacing:-.2px;white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:8px;margin-left:auto;}
.nav-item{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  min-width:112px;height:44px;padding:0 12px;
  border-radius:var(--r-sm);
  background:var(--brand-50);
  color:var(--ink-700);
  font-size:14px;font-weight:500;
  white-space:nowrap;
  transition:background .18s var(--ease),color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease);
}
.nav-item svg{width:19px;height:19px;flex-shrink:0;}
.nav-item:hover{background:var(--brand-100);color:var(--brand-700);transform:translateY(-1px);}
.nav-item.active{background:var(--brand-100);color:var(--brand-700);font-weight:600;box-shadow:inset 0 0 0 1.5px rgba(27,94,150,.38);}
.nav-cta{flex-shrink:0;}
.nav-toggle{
  display:none;width:44px;height:44px;margin-left:auto;
  border:1px solid var(--line);background:var(--brand-50);
  border-radius:var(--r-sm);cursor:pointer;position:relative;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  position:absolute;left:50%;transform:translateX(-50%);
  width:18px;height:2px;background:var(--brand-700);border-radius:2px;content:"";transition:.2s var(--ease);
}
.nav-toggle span{top:50%;margin-top:-1px;}
.nav-toggle span::before{top:-6px;left:0;transform:none;}
.nav-toggle span::after{top:6px;left:0;transform:none;}

/* Buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;
  border-radius:var(--r-btn);
  border:1.5px solid transparent;
  font-size:15px;font-weight:600;line-height:1;
  cursor:pointer;text-decoration:none;
  transition:background .18s var(--ease),color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.btn-sm{height:36px;padding:0 16px;font-size:14px;}
.btn-primary{background:var(--brand-700);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--brand-500);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-3);}
.btn-accent{background:var(--accent-600);color:#fff;box-shadow:var(--sh-1);}
.btn-accent:hover{background:#C56A20;color:#fff;transform:translateY(-1px);box-shadow:var(--sh-3);}
.btn-outline{background:#fff;border-color:var(--line);color:var(--brand-700);}
.btn-outline:hover{background:var(--brand-50);border-color:var(--brand-500);color:var(--brand-700);transform:translateY(-1px);}
.btn-ghost{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.55);color:#fff;}
.btn-ghost:hover{background:rgba(255,255,255,.16);color:#fff;border-color:#fff;}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--brand-700);}
.text-link:hover{color:var(--brand-500);gap:10px;}

/* Page head */
.page-head{background:linear-gradient(180deg,#FFFFFF 0%,var(--brand-50) 100%);padding:44px 0 40px;border-bottom:1px solid var(--line);}
.breadcrumb-bar{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-500);margin-bottom:18px;flex-wrap:wrap;}
.breadcrumb-bar a{color:var(--ink-500);}
.breadcrumb-bar a:hover{color:var(--brand-700);}
.breadcrumb-bar .sep{color:#B9C9D6;}
.breadcrumb-bar .current{color:var(--ink-500);max-width:60%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.page-title{
  font-size:36px;line-height:1.3;font-weight:700;letter-spacing:-.2px;
  max-width:900px;color:var(--ink-900);
}
.meta-row{display:flex;align-items:center;flex-wrap:wrap;gap:16px;margin-top:20px;font-size:14px;color:var(--ink-500);}
.meta-row .divider{width:1px;height:14px;background:var(--line);}
.badge-cat{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:999px;background:var(--brand-100);color:var(--brand-700);
  font-size:13px;font-weight:600;
}
.badge-soft{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:999px;background:var(--accent-100);color:var(--accent-600);
  font-size:13px;font-weight:600;
}

/* Article layout */
.article-section{padding:56px 0 72px;}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:32px;align-items:start;}
.article-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-2);
  padding:32px 24px;
  min-width:0;
}
.article-body{max-width:760px;margin:0 auto;font-size:17px;line-height:1.9;color:var(--ink-700);}
.article-body p{margin:0 0 1.1em;}
.article-body h2{
  font-size:22px;font-weight:700;color:var(--ink-900);line-height:1.45;
  margin:40px 0 16px;padding-left:14px;border-left:4px solid var(--brand-700);
  scroll-margin-top:120px;
}
.article-body h3{font-size:18px;font-weight:600;color:var(--ink-900);margin:28px 0 12px;scroll-margin-top:120px;}
.article-body h4{font-size:16px;font-weight:600;color:var(--ink-900);margin:22px 0 10px;}
.article-body ul{list-style:none;padding-left:0;margin:0 0 1.2em;}
.article-body ul li{position:relative;padding-left:22px;margin-bottom:8px;line-height:1.8;}
.article-body ul li::before{
  content:"";position:absolute;left:4px;top:.72em;width:7px;height:7px;border-radius:50%;background:var(--brand-500);
}
.article-body ol{padding-left:1.4em;margin:0 0 1.2em;}
.article-body ol li{margin-bottom:8px;line-height:1.8;}
.article-body blockquote{
  background:var(--brand-50);border-left:4px solid var(--brand-500);
  border-radius:var(--r-sm);padding:20px;margin:24px 0;color:var(--ink-700);
}
.article-body img{border-radius:var(--r-img);margin:24px auto;height:auto;}
.article-body a{color:var(--brand-700);text-decoration:underline;text-underline-offset:3px;}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;border:1px solid var(--line);border-radius:var(--r-sm);overflow:hidden;margin:24px 0;}
.article-body th{background:var(--brand-50);color:var(--ink-900);font-weight:600;}
.article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left;line-height:1.6;}
.article-body tbody tr:nth-child(even){background:#FAFCFE;}
.article-body hr{border:none;border-top:1px solid var(--line);margin:32px 0;}
@media (max-width:767.98px){
  .article-body table{display:block;overflow-x:auto;white-space:nowrap;}
}

/* Empty state */
.empty-card{
  max-width:760px;margin:0 auto;text-align:center;
  background:var(--surface);border:1px dashed var(--line);
  border-radius:var(--r-md);padding:48px 24px;
}
.empty-icon{
  width:48px;height:48px;border-radius:50%;background:var(--brand-100);
  display:flex;align-items:center;justify-content:center;margin:0 auto 16px;color:var(--brand-500);
}
.empty-card p{font-size:16px;color:var(--ink-700);margin-bottom:20px;}

/* Aside / TOC */
.article-aside{position:sticky;top:104px;display:flex;flex-direction:column;gap:16px;}
.toc-card{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-md);box-shadow:var(--sh-1);padding:20px;
}
.toc-card h3{font-size:15px;font-weight:600;color:var(--ink-900);margin-bottom:12px;}
.toc-list{display:flex;flex-direction:column;gap:2px;}
.toc-link{
  display:block;font-size:14px;line-height:1.6;color:var(--ink-500);
  padding:7px 10px;border-left:2px solid transparent;border-radius:0 8px 8px 0;
  transition:color .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease);
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.toc-link:hover{color:var(--brand-700);background:var(--brand-50);}
.toc-link.active{color:var(--brand-700);font-weight:600;border-left-color:var(--brand-700);background:var(--brand-50);}
.help-card{
  background:var(--surface);border:1.5px solid var(--brand-100);
  border-radius:var(--r-md);box-shadow:var(--sh-1);padding:20px;
}
.help-card h3{font-size:15px;font-weight:600;color:var(--brand-700);margin-bottom:8px;}
.help-card p{font-size:14px;line-height:1.7;color:var(--ink-500);margin-bottom:14px;}
.mobile-toc{display:none;margin-bottom:16px;}
.mobile-toc-toggle{
  width:100%;height:44px;background:var(--brand-50);border:1px solid var(--line);
  border-radius:var(--r-btn);color:var(--brand-700);font-size:15px;font-weight:600;cursor:pointer;
}
.mobile-toc .collapse .toc-list{padding:12px 0 4px;}

/* Tags */
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:36px;padding-top:24px;border-top:1px solid var(--line);}
.tag{
  display:inline-flex;align-items:center;height:32px;padding:0 14px;
  border-radius:999px;border:1px solid var(--line);background:#fff;
  font-size:13px;color:var(--ink-700);
  transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.tag:hover{background:var(--brand-100);border-color:var(--brand-100);color:var(--brand-700);}

/* Prev / next cards */
.postnav{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:24px;}
.postnav-card{
  display:block;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-md);box-shadow:var(--sh-1);
  padding:20px;transition:transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.postnav-card:hover{transform:translateY(-2px);box-shadow:var(--sh-3);border-color:var(--brand-100);}
.postnav-dir{display:block;font-size:13px;color:var(--ink-500);margin-bottom:8px;}
.postnav-title{display:block;font-size:16px;font-weight:600;color:var(--ink-900);line-height:1.5;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.postnav-card:hover .postnav-title{color:var(--brand-700);}
.postnav-card.right{text-align:right;}

/* Related */
.related-section{padding:72px 0;background:#fff;border-top:1px solid var(--line);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:32px;}
.section-head h2{font-size:32px;line-height:1.3;font-weight:700;}
.section-desc{font-size:14px;color:var(--ink-500);margin-top:10px;}
.card-grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.info-card{
  display:flex;flex-direction:column;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-md);box-shadow:var(--sh-2);
  padding:20px;transition:transform .18s var(--ease),box-shadow .18s var(--ease);
}
.info-card:hover{transform:translateY(-2px);box-shadow:var(--sh-3);}
.thumb-wrap{border-radius:var(--r-img);overflow:hidden;aspect-ratio:16/9;background:var(--brand-50);}
.thumb-wrap img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);}
.info-card:hover .thumb-wrap img{transform:scale(1.03);}
.card-meta{display:flex;align-items:center;gap:10px;margin:14px 0 10px;font-size:13px;color:var(--ink-500);}
.card-title{font-size:17px;font-weight:600;line-height:1.5;color:var(--ink-900);margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.info-card:hover .card-title{color:var(--brand-700);}
.card-excerpt{font-size:14px;line-height:1.7;color:var(--ink-500);margin-bottom:16px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-foot{display:flex;align-items:center;justify-content:space-between;border-top:1px solid var(--line);padding-top:14px;margin-top:auto;font-size:14px;color:var(--ink-500);}
.card-foot .read{color:var(--brand-700);font-weight:600;display:inline-flex;align-items:center;gap:4px;}
.info-card:hover .read{gap:8px;}

/* CTA strip */
.cta-strip{padding:0 0 80px;}
.cta-box{
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  background:var(--brand-800);border-radius:var(--r-xl);
  padding:40px;color:#fff;margin-top:72px;
}
.cta-box h2{color:#fff;font-size:28px;line-height:1.35;margin-bottom:10px;}
.cta-box p{color:rgba(255,255,255,.78);font-size:15px;max-width:520px;margin:0;}
.cta-actions{display:flex;gap:12px;flex-shrink:0;}

/* Footer */
.site-footer{background:var(--brand-800);color:rgba(255,255,255,.9);padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.2fr;gap:32px;padding-bottom:48px;}
.footer-brand .brand-text{color:#fff;}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.72);margin:16px 0;}
.footer-contact-line{display:flex;align-items:center;gap:8px;font-size:14px;color:rgba(255,255,255,.78);margin-bottom:8px;}
.footer-contact-line svg{width:18px;height:18px;flex-shrink:0;color:var(--brand-500);}
.site-footer h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;}
.footer-links{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px;}
.footer-links a{font-size:14px;color:rgba(255,255,255,.75);}
.footer-links a:hover{color:#fff;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 28px;display:flex;align-items:center;justify-content:space-between;
  gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.6);
}
.footer-bottom a{color:rgba(255,255,255,.7);}
.footer-bottom a:hover{color:#fff;}
.footer-legal{display:flex;gap:16px;flex-wrap:wrap;}

/* Responsive */
@media (max-width:1199.98px){
  .article-layout{grid-template-columns:minmax(0,1fr);}
  .article-aside{display:none;}
  .mobile-toc{display:block;}
  .section-head h2{font-size:26px;}
  .cta-box{margin-top:56px;}
}
@media (max-width:991.98px){
  .nav-toggle{display:inline-flex;}
  .nav-links{
    position:absolute;top:calc(100% + 10px);left:0;right:0;
    display:grid;grid-template-columns:1fr 1fr;gap:8px;
    background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
    box-shadow:var(--sh-3);padding:12px;
    opacity:0;visibility:hidden;transform:translateY(-6px);
    transition:opacity .18s var(--ease),transform .18s var(--ease),visibility .18s var(--ease);
    margin-left:0;max-height:70vh;overflow-y:auto;
  }
  .nav-links.is-open{opacity:1;visibility:visible;transform:none;}
  .nav-item{width:100%;min-width:0;height:48px;justify-content:flex-start;}
  .nav-cta{display:none;}
  .card-grid-3{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .cta-box{flex-direction:column;align-items:flex-start;padding:32px;}
  .cta-actions{width:100%;flex-wrap:wrap;}
  .page-title{font-size:30px;}
}
@media (max-width:767.98px){
  .site-header{padding-top:10px;}
  .nav-card{border-radius:16px;min-height:64px;padding:8px 12px;}
  .brand-text{font-size:16px;}
  .page-head{padding:32px 0 28px;}
  .page-title{font-size:26px;}
  .meta-row{gap:10px;font-size:13px;}
  .meta-row .divider{display:none;}
  .article-section{padding:40px 0 56px;}
  .article-card{padding:20px;border-radius:var(--r-md);}
  .article-body{font-size:16px;line-height:1.85;}
  .article-body h2{font-size:20px;margin-top:32px;}
  .postnav{grid-template-columns:1fr;}
  .postnav-card.right{text-align:left;}
  .related-section{padding:56px 0;}
  .card-grid-3{grid-template-columns:minmax(0,1fr);}
  .cta-strip{padding-bottom:56px;}
  .cta-box{border-radius:var(--r-md);padding:28px 24px;}
  .cta-box h2{font-size:22px;}
  .site-footer{padding-top:48px;}
}
@media (max-width:575.98px){
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .cta-actions .btn{width:100%;}
}

/* roulang page: category1 */
:root{
  --brand-800:#123E66;
  --brand-700:#1B5E96;
  --brand-500:#2C85C4;
  --brand-100:#E4EFF8;
  --brand-50:#F3F8FC;
  --accent-600:#D9772A;
  --accent-100:#FCEEE0;
  --ink-900:#152430;
  --ink-700:#34495B;
  --ink-500:#6B7E8D;
  --line:#DDE7F0;
  --bg:#F6F9FC;
  --surface:#FFFFFF;
  --success:#2E8B6B;
  --warning:#D9A227;
  --danger:#C0503F;
  --r-lg:24px;
  --r-md:16px;
  --r-sm:10px;
  --r-img:12px;
  --r-pill:999px;
  --sh1:0 1px 2px rgba(18,62,102,.06);
  --sh2:0 10px 26px -14px rgba(18,62,102,.20);
  --sh3:0 18px 40px -16px rgba(18,62,102,.28);
  --ease:180ms cubic-bezier(.2,.7,.3,1);
  --focus:0 0 0 3px rgba(44,133,196,.35);

  --bs-primary:#1B5E96;
  --bs-primary-rgb:27,94,150;
  --bs-body-color:#34495B;
  --bs-body-bg:#F6F9FC;
  --bs-border-color:#DDE7F0;
  --bs-border-radius:10px;
  --bs-border-radius-lg:16px;
  --bs-font-sans-serif:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  --bs-link-color:#1B5E96;
  --bs-link-hover-color:#2C85C4;
  --bs-body-font-size:17px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:17px;
  line-height:1.8;
  color:var(--ink-700);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand-700);text-decoration:none}
a:hover{color:var(--brand-500)}
h1,h2,h3,h4{color:var(--ink-900);margin:0 0 16px;letter-spacing:-.2px}
h1{font-size:44px;line-height:1.25;font-weight:700}
h2{font-size:32px;line-height:1.3;font-weight:700}
h3{font-size:22px;line-height:1.4;font-weight:600}
h4{font-size:18px;line-height:1.5;font-weight:600}
p{margin:0 0 1.1em;max-width:760px}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:none;box-shadow:var(--focus);border-radius:var(--r-sm)}

.num{font-family:Inter,"Segoe UI",system-ui,sans-serif;font-variant-numeric:tabular-nums}
.container{max-width:1200px;margin:0 auto;padding:0 32px;width:100%}
@media (max-width:767px){.container{padding:0 20px}}

/* ============ 导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  padding:16px 0 0;
  transition:padding var(--ease);
}
.site-header.is-scrolled{padding-top:8px}
.nav-card{
  display:flex;
  align-items:center;
  gap:20px;
  min-height:76px;
  padding:10px 16px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:18px;
  box-shadow:var(--sh2);
  transition:min-height var(--ease),box-shadow var(--ease),background var(--ease),padding var(--ease);
}
.site-header.is-scrolled .nav-card{
  min-height:64px;
  box-shadow:var(--sh1);
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(6px);
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-weight:700;
  color:var(--brand-700);
  font-size:17px;
  line-height:1.2;
  flex:0 0 auto;
}
.brand:hover{color:var(--brand-700)}
.brand-mark{
  width:30px;height:30px;
  display:grid;
  grid-template-columns:1fr 1fr;
  grid-template-rows:1fr 1fr;
  gap:3px;
  flex:0 0 30px;
}
.brand-mark i{display:block;background:var(--brand-500);border-radius:3px}
.brand-mark i:nth-child(1){background:var(--brand-700);grid-row:span 2}
.brand-text{white-space:nowrap}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  align-items:center;
  justify-content:center;
  border:1px solid var(--line);
  background:var(--brand-50);
  border-radius:12px;
  cursor:pointer;
  margin-left:auto;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--brand-700);position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--brand-700);
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-links{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  flex:1 1 auto;
}
.nav-item{
  display:inline-flex;
  align-items:center;
  gap:7px;
  height:44px;
  padding:0 14px;
  border-radius:12px;
  background:var(--brand-50);
  color:var(--ink-700);
  font-size:14px;
  white-space:nowrap;
  transition:background var(--ease),color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.nav-item svg{width:19px;height:19px;flex:0 0 19px}
.nav-item:hover{background:var(--brand-100);color:var(--brand-700);transform:translateY(-1px)}
.nav-item.active{
  background:var(--brand-100);
  color:var(--brand-700);
  font-weight:600;
  box-shadow:inset 0 0 0 1.5px var(--brand-700);
}
.nav-cta{flex:0 0 auto}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 20px;
  border:0;
  border-radius:var(--r-sm);
  font-size:15px;
  font-weight:600;
  line-height:1;
  text-decoration:none;
  cursor:pointer;
  transition:background var(--ease),color var(--ease),box-shadow var(--ease),transform var(--ease),border-color var(--ease);
}
.btn:focus-visible{box-shadow:var(--focus)}
.btn-primary{background:var(--brand-700);color:#fff}
.btn-primary:hover{background:var(--brand-500);color:#fff;box-shadow:var(--sh3);transform:translateY(-1px)}
.btn-outline{background:#fff;color:var(--brand-700);box-shadow:inset 0 0 0 1.5px var(--line)}
.btn-outline:hover{background:var(--brand-50);color:var(--brand-700);transform:translateY(-1px);box-shadow:inset 0 0 0 1.5px var(--brand-500),var(--sh1)}
.btn-accent{background:var(--accent-600);color:#fff}
.btn-accent:hover{background:#c3681f;color:#fff;box-shadow:var(--sh3);transform:translateY(-1px)}
.btn-ghost{background:transparent;color:#fff;box-shadow:inset 0 0 0 1.5px rgba(255,255,255,.55)}
.btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff}
.btn-sm{height:36px;font-size:14px;padding:0 16px}
.btn-lg{height:48px;font-size:16px;padding:0 26px}
.btn-link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand-700);font-weight:600;font-size:15px;
}
.btn-link-arrow:hover{gap:10px;color:var(--brand-500)}
.btn-link-arrow svg{width:18px;height:18px;transition:transform var(--ease)}

/* ============ 通用区块 ============ */
.section{padding:96px 0}
.section-alt{background:var(--brand-50)}
.section-white{background:var(--surface)}
.section-head{margin-bottom:40px}
.section-head h2{margin-bottom:10px}
.section-sub{font-size:14px;color:var(--ink-500);margin:0}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;
  border-radius:var(--r-pill);
  background:var(--brand-100);
  color:var(--brand-700);
  font-size:13px;
  line-height:1.4;
  font-weight:600;
}
.badge-accent{background:var(--accent-100);color:var(--accent-600)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--brand-100);color:var(--brand-700);
  font-size:13px;font-weight:600;
  padding:6px 14px;border-radius:var(--r-pill);
  margin-bottom:18px;
}
.card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  box-shadow:var(--sh2);
  padding:24px;
  transition:transform var(--ease),box-shadow var(--ease);
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh3)}
.card h3{font-size:18px;margin-bottom:10px}
.card p{font-size:14px;color:var(--ink-500);line-height:1.7;margin:0}
.card-icon{
  width:44px;height:44px;border-radius:12px;
  background:var(--brand-100);color:var(--brand-700);
  display:flex;align-items:center;justify-content:center;
  margin-bottom:16px;
}
.card-icon svg{width:22px;height:22px}

/* ============ 面包屑 ============ */
.breadcrumb-bar{padding:20px 0 0;font-size:13px;color:var(--ink-500)}
.breadcrumb-bar ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin:0;padding:0;list-style:none}
.breadcrumb-bar li{display:flex;align-items:center;gap:8px}
.breadcrumb-bar li::after{content:"/";color:var(--line)}
.breadcrumb-bar li:last-child::after{display:none}
.breadcrumb-bar a{color:var(--brand-700)}
.breadcrumb-bar .current{color:var(--ink-500)}

/* ============ 矮版 Hero ============ */
.hero-short{
  background:var(--brand-50);
  border-bottom:1px solid var(--line);
  padding:36px 0 44px;
  position:relative;
  overflow:hidden;
}
.hero-short::after{
  content:"";
  position:absolute;
  right:-80px;top:-120px;
  width:420px;height:420px;
  background:var(--brand-100);
  opacity:.55;
  transform:rotate(18deg);
  border-radius:48px;
  pointer-events:none;
}
.hero-grid{
  display:grid;
  grid-template-columns:1.08fr .92fr;
  gap:44px;
  align-items:center;
  position:relative;
  z-index:1;
  min-height:320px;
}
.hero-short h1{margin-bottom:16px}
.hero-lead{
  font-size:19px;
  line-height:1.7;
  color:var(--ink-700);
  max-width:560px;
  margin-bottom:26px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:24px}
.hero-facts{display:flex;flex-wrap:wrap;gap:22px;font-size:14px;color:var(--ink-500)}
.hero-facts span{display:inline-flex;align-items:center;gap:8px}
.hero-facts svg{width:18px;height:18px;color:var(--brand-500)}
.hero-figure{margin:0}
.hero-figure img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  border-radius:20px;
  box-shadow:var(--sh2);
}

/* ============ 图文交替 ============ */
.zig{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:48px;
  align-items:center;
  margin-bottom:72px;
}
.zig:last-child{margin-bottom:0}
.zig--reverse .zig-media{order:2}
.zig-media{margin:0}
.zig-media img{
  width:100%;
  aspect-ratio:16/11;
  object-fit:cover;
  border-radius:var(--r-md);
  box-shadow:var(--sh2);
}
.zig-body h2{font-size:28px;margin-bottom:14px}
.zig-body p{font-size:16px;color:var(--ink-700)}
.zig-body .btn-link-arrow{margin-top:8px}
.zig-index{
  display:inline-flex;align-items:center;justify-content:center;
  width:36px;height:36px;border-radius:12px;
  background:var(--accent-600);color:#fff;
  font-size:15px;font-weight:700;
  margin-bottom:14px;
  font-family:Inter,system-ui,sans-serif;
}

/* ============ 三卡要点 ============ */
.card-grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.num-list{display:flex;flex-direction:column;gap:14px;margin-top:16px}
.num-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--ink-700)}
.num-list .step-num{
  flex:0 0 26px;
  width:26px;height:26px;
  border-radius:8px;
  background:var(--accent-600);
  color:#fff;
  font-size:13px;
  font-weight:700;
  display:inline-flex;align-items:center;justify-content:center;
  margin-top:3px;
  font-family:Inter,system-ui,sans-serif;
}
.check-list{display:flex;flex-direction:column;gap:12px;margin-top:14px}
.check-list li{display:flex;gap:10px;align-items:flex-start;font-size:15px}
.check-box{
  flex:0 0 18px;
  width:18px;height:18px;border-radius:6px;
  background:var(--brand-100);
  color:var(--brand-700);
  display:inline-flex;align-items:center;justify-content:center;
  margin-top:5px;
}
.check-box svg{width:12px;height:12px}

/* ============ FAQ ============ */
.faq-wrap{max-width:880px;margin:0 auto}
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq-item{
  background:var(--surface);
  border:1px solid var(--line);
  border-left:3px solid transparent;
  border-radius:14px;
  box-shadow:var(--sh1);
  overflow:hidden;
  transition:box-shadow var(--ease),border-color var(--ease);
}
.faq-item:has(.faq-head[aria-expanded="true"]){
  border-left-color:var(--brand-700);
  box-shadow:var(--sh2);
}
.faq-head{
  width:100%;
  min-height:56px;
  display:flex;
  align-items:center;
  gap:14px;
  padding:14px 18px;
  background:transparent;
  border:0;
  text-align:left;
  font-size:17px;
  font-weight:600;
  color:var(--ink-900);
  cursor:pointer;
  line-height:1.5;
}
.faq-icon{
  flex:0 0 28px;
  width:28px;height:28px;
  border-radius:8px;
  background:var(--brand-50);
  color:var(--brand-700);
  display:inline-flex;align-items:center;justify-content:center;
  transition:transform 220ms cubic-bezier(.2,.7,.3,1),color 220ms,background 220ms;
}
.faq-icon svg{width:15px;height:15px}
.faq-head[aria-expanded="true"] .faq-icon{transform:rotate(45deg);color:var(--accent-600);background:var(--accent-100)}
.faq-body{padding:0 18px 20px 60px;font-size:15.5px;color:var(--ink-700)}
.faq-body p{font-size:15.5px;max-width:100%}

/* ============ CTA 条 ============ */
.cta-bar{
  background:var(--brand-800);
  border-radius:var(--r-lg);
  padding:40px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  color:#fff;
}
.cta-bar h2{color:#fff;font-size:28px;margin-bottom:10px}
.cta-bar p{color:rgba(255,255,255,.82);font-size:15px;max-width:560px;margin:0}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;flex:0 0 auto}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--brand-800);
  color:rgba(255,255,255,.9);
  padding:72px 0 24px;
  margin-top:96px;
}
.footer-grid{
  display:grid;
  grid-template-columns:2fr 1fr 1fr 1.2fr;
  gap:32px;
}
.site-footer .brand{color:#fff}
.site-footer .brand-mark i{background:rgba(255,255,255,.55)}
.site-footer .brand-mark i:nth-child(1){background:#fff}
.site-footer h4{color:#fff;font-size:16px;margin-bottom:16px}
.site-footer p{font-size:14px;color:rgba(255,255,255,.72);line-height:1.8;max-width:360px;margin:16px 0 20px}
.footer-contact-line{
  display:flex;align-items:center;gap:10px;
  font-size:14px;color:rgba(255,255,255,.78);
  margin-bottom:10px;
}
.footer-contact-line svg{width:18px;height:18px;flex:0 0 18px;color:rgba(255,255,255,.62)}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{
  color:rgba(255,255,255,.78);
  font-size:14px;
  transition:color var(--ease),padding-left var(--ease);
}
.footer-links a:hover{color:#fff;padding-left:4px}
.footer-bottom{
  margin-top:44px;
  padding-top:20px;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;
  flex-wrap:wrap;
  gap:12px 24px;
  align-items:center;
  justify-content:space-between;
  font-size:13px;
  color:rgba(255,255,255,.6);
}
.footer-bottom a{color:rgba(255,255,255,.72);font-size:13px}
.footer-bottom a:hover{color:#fff}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .section{padding:72px 0}
  .zig{gap:36px;margin-bottom:60px}
  .cta-bar{padding:36px}
}
@media (max-width:991px){
  .nav-toggle{display:inline-flex}
  .nav-card{flex-wrap:wrap;gap:12px}
  .nav-links{
    display:none;
    width:100%;
    flex-wrap:wrap;
    justify-content:flex-start;
    gap:10px;
    margin-top:12px;
    padding-top:14px;
    border-top:1px solid var(--line);
  }
  .nav-card.nav-open .nav-links{display:flex}
  .nav-item{flex:1 1 calc(50% - 5px);min-width:0;height:48px}
  .nav-cta{display:none;width:100%}
  .nav-card.nav-open .nav-cta{display:block}
  .nav-cta .btn{width:100%}
  .hero-grid{grid-template-columns:1fr;gap:28px;min-height:0}
  .hero-figure{order:-1}
  .zig{grid-template-columns:1fr;gap:24px}
  .zig--reverse .zig-media{order:0}
  .zig-body h2{font-size:24px}
  .card-grid-3{grid-template-columns:1fr 1fr}
  .cta-bar{flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px 24px}
  .site-footer p{max-width:100%}
}
@media (max-width:767px){
  body{font-size:16px}
  .section{padding:56px 0}
  h1{font-size:30px}
  h2{font-size:24px}
  h3{font-size:18px}
  .hero-short{padding:24px 0 32px}
  .hero-lead{font-size:16px}
  .hero-actions .btn{width:100%}
  .card-grid-3{grid-template-columns:1fr}
  .card{padding:20px}
  .faq-body{padding:0 18px 18px 18px}
  .cta-bar{padding:28px 22px;border-radius:20px}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .site-footer{padding:52px 0 20px;margin-top:64px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:575px){
  h1{font-size:27px}
  .nav-item{font-size:13px;padding:0 12px}
  .hero-facts{gap:14px;font-size:13px}
}

/* roulang page: category2 */
:root{
  --brand-800:#123E66;
  --brand-700:#1B5E96;
  --brand-500:#2C85C4;
  --brand-100:#E4EFF8;
  --brand-50:#F3F8FC;
  --accent-600:#D9772A;
  --accent-100:#FCEEE0;
  --ink-900:#152430;
  --ink-700:#34495B;
  --ink-500:#6B7E8D;
  --line:#DDE7F0;
  --bg:#F6F9FC;
  --surface:#FFFFFF;
  --success:#2E8B6B;
  --warning:#D9A227;
  --danger:#C0503F;
  --radius-lg:24px;
  --radius-md:16px;
  --radius-sm:10px;
  --radius-img:12px;
  --level-1:0 1px 2px rgba(18,62,102,.06);
  --level-2:0 10px 26px -14px rgba(18,62,102,.20);
  --level-3:0 18px 40px -16px rgba(18,62,102,.28);
  --ease:cubic-bezier(.2,.7,.3,1);

  --bs-primary:#1B5E96;
  --bs-body-color:#34495B;
  --bs-border-radius:10px;
  --bs-font-sans-serif:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  --bs-body-font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-700);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:17px;
  line-height:1.8;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;border-radius:var(--radius-img);}
a{color:var(--brand-700);text-decoration:none;transition:color .18s var(--ease);}
a:hover{color:var(--brand-500);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;line-height:1.3;}
p{margin:0 0 1.1em;}
p:last-child{margin-bottom:0;}
button{font-family:inherit;}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(44,133,196,.35);border-radius:8px;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:32px;
  padding-right:32px;
}
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.bg-white{background:var(--surface);}
.bg-soft{background:var(--brand-50);}
.bg-tint{background:var(--brand-100);}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  padding-top:16px;
  transition:padding .2s var(--ease);
}
.site-header .container{position:relative;}
.nav-card{
  display:flex;
  align-items:center;
  gap:18px;
  min-height:76px;
  padding:12px 18px;
  background:rgba(255,255,255,.96);
  border:1px solid var(--line);
  border-radius:18px;
  box-shadow:var(--level-2);
  transition:min-height .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.site-header.is-scrolled .nav-card{
  min-height:64px;
  box-shadow:var(--level-1);
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(6px);
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  color:var(--brand-700);
  font-weight:700;
  letter-spacing:-.2px;
}
.brand:hover{color:var(--brand-700);}
.brand-mark{
  display:inline-grid;
  grid-template-columns:repeat(3,6px);
  align-items:end;
  gap:3px;
  width:26px;
  height:26px;
  padding:5px;
  border-radius:9px;
  background:var(--brand-700);
}
.brand-mark i{display:block;background:#fff;border-radius:1.5px;height:100%;}
.brand-mark i:nth-child(1){opacity:.65;}
.brand-mark i:nth-child(2){opacity:.85;}
.brand-text{font-size:17px;font-weight:700;}
.nav-links{
  display:flex;
  align-items:center;
  gap:8px;
  margin-left:auto;
}
.nav-item{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:44px;
  padding:0 14px;
  border-radius:12px;
  background:var(--brand-50);
  border:1.5px solid transparent;
  color:var(--ink-700);
  font-size:14px;
  white-space:nowrap;
  transition:background .18s var(--ease),transform .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.nav-item svg{width:18px;height:18px;flex:0 0 auto;}
.nav-item:hover{background:var(--brand-100);color:var(--brand-700);transform:translateY(-1px);}
.nav-item.active{
  background:var(--brand-100);
  color:var(--brand-700);
  border-color:var(--brand-700);
  font-weight:600;
}
.nav-cta{margin-left:12px;flex:0 0 auto;}
.nav-toggle{
  display:none;
  margin-left:auto;
  width:44px;
  height:44px;
  border:1px solid var(--line);
  border-radius:12px;
  background:var(--brand-50);
  position:relative;
  cursor:pointer;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  position:absolute;
  left:50%;
  width:18px;
  height:2px;
  background:var(--brand-700);
  border-radius:2px;
  transform:translateX(-50%);
  content:"";
  transition:transform .2s var(--ease),opacity .2s var(--ease);
}
.nav-toggle span{top:50%;margin-top:-1px;}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.nav-toggle[aria-expanded="true"] span{background:transparent;}
.nav-toggle[aria-expanded="true"] span::before{transform:translateX(-50%) rotate(45deg);top:0;}
.nav-toggle[aria-expanded="true"] span::after{transform:translateX(-50%) rotate(-45deg);top:0;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 20px;
  border-radius:var(--radius-sm);
  font-size:15px;
  font-weight:600;
  line-height:1;
  border:1.5px solid transparent;
  box-shadow:none;
  transition:background .18s var(--ease),color .18s var(--ease),box-shadow .18s var(--ease),transform .18s var(--ease),border-color .18s var(--ease);
}
.btn:focus,.btn:focus-visible{box-shadow:0 0 0 3px rgba(44,133,196,.35);}
.btn-sm{height:36px;padding:0 16px;font-size:14px;}
.btn-primary{
  background:var(--brand-700);
  border-color:var(--brand-700);
  color:#fff;
}
.btn-primary:hover,.btn-primary:focus{
  background:var(--brand-500);
  border-color:var(--brand-500);
  color:#fff;
  box-shadow:var(--level-3);
  transform:translateY(-1px);
}
.btn-outline{
  background:var(--surface);
  border-color:var(--line);
  color:var(--ink-900);
  border-width:1.5px;
}
.btn-outline:hover{
  background:var(--brand-50);
  border-color:var(--brand-500);
  color:var(--brand-700);
  transform:translateY(-1px);
}
.btn-accent{
  background:var(--accent-600);
  border-color:var(--accent-600);
  color:#fff;
}
.btn-accent:hover{background:#c4681f;border-color:#c4681f;color:#fff;box-shadow:var(--level-3);transform:translateY(-1px);}
.btn-text{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:auto;
  padding:0;
  background:none;
  border:0;
  color:var(--brand-700);
  font-size:15px;
  font-weight:600;
}
.btn-text:hover{color:var(--brand-500);}
.btn-text svg{width:16px;height:16px;transition:transform .18s var(--ease);}
.btn-text:hover svg{transform:translateX(3px);}

/* ---------- badges / chips ---------- */
.badge-soft{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 12px;
  border-radius:999px;
  background:var(--brand-100);
  color:var(--brand-700);
  font-size:13px;
  font-weight:600;
  line-height:1.6;
}
.badge-accent{
  background:var(--accent-100);
  color:var(--accent-600);
}
.badge-outline{
  background:transparent;
  border:1px solid var(--line);
  color:var(--ink-500);
  font-weight:500;
}

/* ---------- breadcrumb ---------- */
.crumb-bar{
  background:var(--surface);
  border-bottom:1px solid var(--line);
}
.crumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  padding:14px 0;
  font-size:13px;
  color:var(--ink-500);
  margin:0;
}
.crumb a{color:var(--ink-500);}
.crumb a:hover{color:var(--brand-700);}
.crumb .sep{color:#b8c7d4;}
.crumb .current{color:var(--ink-500);}

/* ---------- hero ---------- */
.page-hero{
  background:var(--bg);
  position:relative;
  overflow:hidden;
  padding:64px 0 72px;
}
.page-hero::after{
  content:"";
  position:absolute;
  top:-80px;
  right:-120px;
  width:480px;
  height:420px;
  background:var(--brand-100);
  opacity:.55;
  transform:rotate(-12deg);
  border-radius:48px;
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:2;}
.hero-inner{max-width:900px;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border-radius:999px;
  background:var(--brand-100);
  color:var(--brand-700);
  font-size:13px;
  font-weight:600;
  margin-bottom:20px;
}
.page-hero h1{
  font-size:44px;
  line-height:1.25;
  letter-spacing:-.2px;
  margin-bottom:18px;
}
.page-hero h1 em{font-style:normal;color:var(--brand-700);}
.hero-sub{
  font-size:18px;
  color:var(--ink-500);
  max-width:760px;
  margin-bottom:28px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:28px;}
.trust-row{
  display:flex;
  flex-wrap:wrap;
  gap:24px;
  align-items:center;
}
.trust-item{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:var(--ink-700);
  position:relative;
}
.trust-item svg{width:18px;height:18px;color:var(--brand-500);flex:0 0 auto;}
.trust-item + .trust-item::before{
  content:"";
  position:absolute;
  left:-13px;
  top:50%;
  transform:translateY(-50%);
  width:1px;
  height:16px;
  background:var(--line);
}

/* ---------- section head ---------- */
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:36px;
}
.section-head h2{font-size:32px;line-height:1.3;}
.section-head .lead-note{
  margin-top:10px;
  font-size:14px;
  color:var(--ink-500);
  max-width:660px;
}
.section-head.center{
  flex-direction:column;
  align-items:center;
  text-align:center;
}
.section-head.center .lead-note{margin-left:auto;margin-right:auto;}

/* ---------- uneven grid ---------- */
.split-grid{
  display:grid;
  grid-template-columns:2fr 1fr;
  gap:24px;
  align-items:start;
}
.feature-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  box-shadow:var(--level-2);
  padding:24px;
  height:100%;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease);
}
.feature-card:hover{transform:translateY(-2px);box-shadow:var(--level-3);}
.feature-card h3{font-size:22px;margin-bottom:14px;}
.feature-card h4{font-size:18px;margin-bottom:10px;}
.feature-media{
  border-radius:var(--radius-img);
  overflow:hidden;
  margin-bottom:22px;
}
.feature-media img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  border-radius:var(--radius-img);
  transition:transform .35s var(--ease);
}
.feature-card:hover .feature-media img{transform:scale(1.03);}
.feature-card p{font-size:16px;color:var(--ink-700);}

.check-list{display:grid;gap:12px;margin-top:18px;}
.check-list li{
  display:flex;
  gap:12px;
  align-items:flex-start;
  font-size:15px;
  line-height:1.7;
  color:var(--ink-700);
}
.check-list .tick{
  flex:0 0 auto;
  width:18px;
  height:18px;
  margin-top:5px;
  border-radius:6px;
  background:var(--brand-100);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  color:var(--brand-700);
}
.check-list .tick svg{width:12px;height:12px;}

.side-stack{display:grid;gap:24px;}
.mini-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  box-shadow:var(--level-2);
  padding:22px;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease);
}
.mini-card:hover{transform:translateY(-2px);box-shadow:var(--level-3);}
.mini-card h4{font-size:17px;margin-bottom:8px;}
.mini-card p{font-size:14px;color:var(--ink-500);line-height:1.7;}
.mini-icon{
  width:38px;
  height:38px;
  border-radius:12px;
  background:var(--brand-100);
  color:var(--brand-700);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  margin-bottom:14px;
}
.mini-icon svg{width:20px;height:20px;}

/* ---------- mode cards ---------- */
.mode-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.mode-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  box-shadow:var(--level-2);
  overflow:hidden;
  display:flex;
  flex-direction:column;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease);
}
.mode-card:hover{transform:translateY(-2px);box-shadow:var(--level-3);}
.mode-card .mode-media{overflow:hidden;}
.mode-card .mode-media img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  border-radius:0;
  transition:transform .35s var(--ease);
}
.mode-card:hover .mode-media img{transform:scale(1.04);}
.mode-body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1;}
.mode-body h3{font-size:18px;}
.mode-body p{font-size:14px;color:var(--ink-500);line-height:1.75;}
.mode-body .meta{
  margin-top:auto;
  padding-top:14px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--ink-500);
  display:flex;
  justify-content:space-between;
  gap:12px;
}

/* ---------- steps ---------- */
.step-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
}
.step-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  box-shadow:var(--level-2);
  padding:24px;
  position:relative;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease);
}
.step-card:hover{transform:translateY(-2px);box-shadow:var(--level-3);}
.step-num{
  width:40px;
  height:40px;
  border-radius:12px;
  background:var(--accent-600);
  color:#fff;
  font-weight:700;
  font-size:15px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  margin-bottom:16px;
  letter-spacing:.5px;
}
.step-card h3{font-size:17px;margin-bottom:8px;}
.step-card p{font-size:14px;color:var(--ink-500);line-height:1.75;}
.step-note{
  margin-top:14px;
  font-size:13px;
  color:var(--brand-700);
  font-weight:600;
}

/* ---------- note panel ---------- */
.note-panel{
  background:var(--brand-100);
  border-radius:var(--radius-lg);
  padding:40px;
  display:grid;
  grid-template-columns:1.1fr 1fr;
  gap:36px;
  align-items:center;
}
.note-panel h2{font-size:28px;margin-bottom:14px;}
.note-panel p{font-size:16px;color:var(--ink-700);}
.note-list{display:grid;gap:14px;}
.note-list li{
  display:flex;
  gap:12px;
  align-items:flex-start;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  padding:16px 18px;
  font-size:15px;
  color:var(--ink-700);
  box-shadow:var(--level-1);
}
.note-list .tick{
  flex:0 0 auto;
  width:18px;
  height:18px;
  margin-top:4px;
  border-radius:6px;
  background:var(--brand-100);
  color:var(--brand-700);
  display:inline-flex;
  align-items:center;
  justify-content:center;
}
.note-list .tick svg{width:12px;height:12px;}

/* ---------- faq ---------- */
.faq-wrap{max-width:880px;margin:0 auto;}
.accordion-item{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:14px !important;
  margin-bottom:12px;
  overflow:hidden;
  transition:box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.accordion-item:has(.accordion-button:not(.collapsed)){
  box-shadow:var(--level-2);
  border-left:3px solid var(--brand-700);
}
.accordion-button{
  width:100%;
  min-height:56px;
  padding:8px 20px;
  background:var(--surface);
  color:var(--ink-900);
  font-size:16px;
  font-weight:600;
  box-shadow:none !important;
  display:flex;
  align-items:center;
  gap:12px;
  border:0;
}
.accordion-button:not(.collapsed){
  background:var(--surface);
  color:var(--brand-700);
}
.accordion-button::after{display:none;}
.accordion-button .faq-icon{
  flex:0 0 auto;
  width:28px;
  height:28px;
  border-radius:8px;
  background:var(--brand-50);
  color:var(--brand-700);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  transition:transform .22s var(--ease),background .22s var(--ease),color .22s var(--ease);
}
.accordion-button .faq-icon svg{width:16px;height:16px;}
.accordion-button:not(.collapsed) .faq-icon{
  background:var(--accent-100);
  color:var(--accent-600);
  transform:rotate(45deg);
}
.accordion-button .faq-text{flex:1;text-align:left;}
.accordion-button .faq-arrow{
  flex:0 0 auto;
  width:18px;
  height:18px;
  color:var(--ink-500);
  transition:transform .22s var(--ease),color .22s var(--ease);
}
.accordion-button:not(.collapsed) .faq-arrow{transform:rotate(180deg);color:var(--brand-700);}
.accordion-body{
  padding:0 20px 20px 60px;
  font-size:15px;
  color:var(--ink-700);
  line-height:1.8;
}

/* ---------- CTA band ---------- */
.cta-band{
  background:var(--brand-800);
  border-radius:var(--radius-lg);
  padding:44px 40px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  color:#fff;
}
.cta-band h2{color:#fff;font-size:28px;margin-bottom:10px;}
.cta-band p{color:rgba(255,255,255,.82);font-size:15px;max-width:620px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;flex:0 0 auto;}
.cta-band .btn-outline{
  background:transparent;
  border-color:rgba(255,255,255,.55);
  color:#fff;
}
.cta-band .btn-outline:hover{
  background:rgba(255,255,255,.12);
  border-color:#fff;
  color:#fff;
}

/* ---------- footer ---------- */
.site-footer{
  background:var(--brand-800);
  color:rgba(255,255,255,.9);
  margin-top:0;
}
.footer-cta{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  padding:40px 0 34px;
  border-bottom:1px solid rgba(255,255,255,.12);
}
.footer-cta h2{color:#fff;font-size:26px;margin-bottom:8px;}
.footer-cta p{color:rgba(255,255,255,.78);font-size:14px;}
.footer-cta-actions{display:flex;gap:12px;flex-wrap:wrap;}
.footer-cta .btn-outline{
  background:transparent;
  border-color:rgba(255,255,255,.55);
  color:#fff;
}
.footer-cta .btn-outline:hover{background:rgba(255,255,255,.12);border-color:#fff;color:#fff;}
.footer-grid{
  display:grid;
  grid-template-columns:2fr 1fr 1fr 1.2fr;
  gap:32px;
  padding:48px 0 36px;
}
.footer-grid h4{
  color:#fff;
  font-size:16px;
  margin-bottom:16px;
}
.footer-brand .brand{color:#fff;margin-bottom:16px;}
.footer-brand .brand-mark{background:rgba(255,255,255,.16);}
.footer-brand p{
  font-size:14px;
  color:rgba(255,255,255,.72);
  line-height:1.75;
  margin-bottom:18px;
  max-width:420px;
}
.footer-contact-line{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:14px;
  color:rgba(255,255,255,.78);
  margin-bottom:10px;
}
.footer-contact-line svg{width:16px;height:16px;flex:0 0 auto;color:rgba(255,255,255,.6);}
.footer-links li{margin-bottom:10px;}
.footer-links a{
  font-size:14px;
  color:rgba(255,255,255,.72);
}
.footer-links a:hover{color:#fff;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 28px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:12px;
  font-size:13px;
  color:rgba(255,255,255,.6);
}
.footer-bottom a{color:rgba(255,255,255,.6);}
.footer-bottom a:hover{color:#fff;}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .section{padding:72px 0;}
  .section-tight{padding:56px 0;}
  .page-hero h1{font-size:38px;}
  .step-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1.6fr 1fr 1fr;}
  .footer-grid > div:last-child{grid-column:span 3;}
}
@media (max-width:991.98px){
  .container{padding-left:24px;padding-right:24px;}
  .nav-toggle{display:inline-flex;}
  .nav-cta{display:none;}
  .nav-links{
    position:absolute;
    top:calc(100% + 10px);
    left:0;
    right:0;
    display:none;
    grid-template-columns:1fr 1fr;
    gap:8px;
    padding:12px;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:16px;
    box-shadow:var(--level-3);
  }
  .nav-links.open{display:grid;}
  .nav-item{
    height:auto;
    min-height:64px;
    flex-direction:column;
    justify-content:center;
    text-align:center;
    padding:10px 8px;
    gap:6px;
    font-size:13px;
    white-space:normal;
  }
  .split-grid{grid-template-columns:1fr;}
  .mode-grid{grid-template-columns:repeat(2,1fr);}
  .note-panel{grid-template-columns:1fr;padding:32px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:36px 32px;}
  .footer-cta{flex-direction:column;align-items:flex-start;}
  .page-hero{padding:56px 0 60px;}
}
@media (max-width:767.98px){
  body{font-size:16px;}
  .container{padding-left:20px;padding-right:20px;}
  .section{padding:56px 0;}
  .section-tight{padding:44px 0;}
  .page-hero{padding:44px 0 52px;}
  .page-hero h1{font-size:30px;}
  .hero-sub{font-size:16px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;}
  .section-head h2{font-size:24px;}
  .mode-grid{grid-template-columns:1fr;}
  .step-grid{grid-template-columns:1fr;}
  .mode-body,.feature-card,.mini-card,.step-card{padding:20px;}
  .accordion-body{padding:0 18px 18px 18px;}
  .cta-band{padding:28px 22px;}
  .cta-band h2{font-size:22px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 100%;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .footer-grid > div:last-child{grid-column:span 2;}
  .footer-brand{grid-column:span 2;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .hero-actions .btn{flex:1 1 100%;}
}
@media (max-width:575.98px){
  .brand-text{font-size:15px;}
  .nav-item{min-height:60px;font-size:12.5px;}
  .trust-row{gap:16px;}
  .trust-item + .trust-item::before{display:none;}
  .trust-row{flex-direction:column;align-items:flex-start;gap:10px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-grid > div:last-child,.footer-brand{grid-column:span 1;}
}

/* roulang page: category3 */
:root{
  --brand-800:#123E66;
  --brand-700:#1B5E96;
  --brand-500:#2C85C4;
  --brand-100:#E4EFF8;
  --brand-50:#F3F8FC;
  --accent-600:#D9772A;
  --accent-100:#FCEEE0;
  --ink-900:#152430;
  --ink-700:#34495B;
  --ink-500:#6B7E8D;
  --line:#DDE7F0;
  --bg:#F6F9FC;
  --surface:#FFFFFF;
  --success:#2E8B6B;
  --warning:#D9A227;
  --danger:#C0503F;
  --radius-lg:24px;
  --radius-md:16px;
  --radius-sm:10px;
  --radius-img:12px;
  --radius-hero:20px;
  --shadow-1:0 1px 2px rgba(18,62,102,.06);
  --shadow-2:0 10px 26px -14px rgba(18,62,102,.20);
  --shadow-3:0 18px 40px -16px rgba(18,62,102,.28);
  --ease:180ms cubic-bezier(.2,.7,.3,1);
  --bs-primary:#1B5E96;
  --bs-body-color:#34495B;
  --bs-border-radius:10px;
  --bs-font-sans-serif:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-700);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:17px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--brand-700);text-decoration:none;transition:color var(--ease)}
a:hover{color:var(--brand-500)}
h1,h2,h3,h4{color:var(--ink-900);margin:0;font-weight:700}
h1{font-size:44px;line-height:1.25;letter-spacing:-.2px}
h2{font-size:32px;line-height:1.3}
h3{font-size:22px;line-height:1.4;font-weight:600}
h4{font-size:18px;line-height:1.4;font-weight:600}
p{margin:0 0 1.1em;max-width:760px}
ul,ol{margin:0;padding:0}
button,input,select,textarea{font-family:inherit;font-size:inherit}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(44,133,196,.35);border-radius:var(--radius-sm)}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 32px;
}
.section{padding:96px 0}
.section-alt{background:var(--brand-50)}
.section-tint{background:var(--brand-100)}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:40px;
}
.section-head p{margin:12px 0 0;color:var(--ink-500);font-size:15px;max-width:680px}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:28px;
  padding:0 12px;
  border-radius:999px;
  background:var(--brand-100);
  color:var(--brand-700);
  font-size:13px;
  font-weight:600;
  line-height:1;
  margin-bottom:16px;
}
.eyebrow.accent{background:var(--accent-100);color:var(--accent-600)}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:var(--bg);
  padding-top:16px;
}
.nav-card{
  position:relative;
  display:flex;
  align-items:center;
  gap:10px;
  min-height:76px;
  padding:10px 16px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:18px;
  box-shadow:var(--shadow-2);
  transition:min-height var(--ease),box-shadow var(--ease),background var(--ease);
}
.site-header.scrolled{backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px)}
.site-header.scrolled .nav-card{
  min-height:64px;
  box-shadow:var(--shadow-1);
  background:rgba(255,255,255,.94);
}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  display:grid;
  grid-template-columns:repeat(2,11px);
  grid-template-rows:repeat(2,11px);
  gap:3px;
  width:25px;
}
.brand-mark i{display:block;background:var(--brand-700);border-radius:3px;width:11px;height:11px}
.brand-mark i:nth-child(2){background:var(--brand-500)}
.brand-mark i:nth-child(3){background:var(--accent-600);grid-column:span 2;width:25px;border-radius:4px}
.brand-text{font-size:17px;font-weight:700;color:var(--brand-700);white-space:nowrap;letter-spacing:-.2px}
.nav-links{
  display:flex;
  align-items:center;
  gap:8px;
  margin-left:auto;
}
.nav-item{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:44px;
  padding:0 14px;
  border-radius:12px;
  background:var(--brand-50);
  border:1.5px solid transparent;
  color:var(--ink-700);
  font-size:14px;
  font-weight:500;
  white-space:nowrap;
  transition:background var(--ease),color var(--ease),transform var(--ease),border-color var(--ease);
}
.nav-item svg{width:18px;height:18px;flex:0 0 18px}
.nav-item:hover{background:var(--brand-100);color:var(--brand-700);transform:translateY(-1px)}
.nav-item.active{
  background:var(--brand-100);
  color:var(--brand-700);
  border-color:var(--brand-700);
  font-weight:600;
}
.nav-cta{margin-left:6px;display:flex;align-items:center}
.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  background:var(--brand-50);
  align-items:center;
  justify-content:center;
  margin-left:auto;
  cursor:pointer;
}
.nav-toggle span{position:relative;display:block;width:18px;height:2px;background:var(--brand-700);border-radius:2px}
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";
  position:absolute;
  left:0;
  width:18px;
  height:2px;
  background:var(--brand-700);
  border-radius:2px;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 22px;
  border:1.5px solid transparent;
  border-radius:var(--radius-sm);
  font-size:15px;
  font-weight:600;
  line-height:1;
  white-space:nowrap;
  cursor:pointer;
  transition:background var(--ease),color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.btn-primary{background:var(--brand-700);color:#fff}
.btn-primary:hover{background:var(--brand-500);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-3)}
.btn-accent{background:var(--accent-600);color:#fff}
.btn-accent:hover{background:#C2691F;color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-3)}
.btn-outline{background:var(--surface);border-color:var(--line);color:var(--ink-700)}
.btn-outline:hover{background:var(--brand-50);color:var(--brand-700);border-color:var(--brand-500);transform:translateY(-1px)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.55);color:#fff}
.btn-ghost:hover{background:#fff;border-color:#fff;color:var(--brand-800);transform:translateY(-1px)}
.btn-sm{height:36px;padding:0 16px;font-size:14px}
.btn-text{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--brand-700);
  font-size:15px;
  font-weight:600;
  padding:6px 2px;
}
.btn-text svg{width:16px;height:16px;transition:transform var(--ease)}
.btn-text:hover{color:var(--brand-500)}
.btn-text:hover svg{transform:translateX(3px)}

/* ---------- 面包屑 ---------- */
.breadcrumb-bar{padding:22px 0 0}
.breadcrumb-list{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  list-style:none;
  font-size:13px;
  color:var(--ink-500);
}
.breadcrumb-list li::after{content:"/";margin-left:8px;color:var(--line)}
.breadcrumb-list li:last-child::after{display:none}
.breadcrumb-list a{color:var(--brand-700)}
.breadcrumb-list .current{color:var(--ink-500);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:240px;display:inline-block;vertical-align:bottom}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  overflow:hidden;
  background:var(--brand-50);
  padding:40px 0 80px;
}
.hero::before{
  content:"";
  position:absolute;
  top:-160px;
  right:-140px;
  width:560px;
  height:560px;
  background:var(--brand-100);
  border-radius:96px;
  transform:rotate(16deg);
  opacity:.75;
  pointer-events:none;
}
.hero::after{
  content:"";
  position:absolute;
  left:-80px;
  bottom:-120px;
  width:360px;
  height:360px;
  border:1px solid var(--line);
  border-radius:50%;
  opacity:.8;
  pointer-events:none;
}
.hero-grid{
  position:relative;
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:48px;
  align-items:center;
  min-height:460px;
}
.hero-copy h1{margin-bottom:18px;max-width:640px}
.hero-copy h1 em{font-style:normal;color:var(--brand-700)}
.hero-sub{
  font-size:18px;
  line-height:1.8;
  color:var(--ink-700);
  max-width:600px;
  margin-bottom:28px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:28px}
.trust-row{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:20px;
  font-size:13px;
  color:var(--ink-700);
}
.trust-row .trust-item{display:inline-flex;align-items:center;gap:8px}
.trust-row .trust-item svg{width:18px;height:18px;color:var(--brand-500)}
.trust-row .divider{width:1px;height:18px;background:var(--line)}
.hero-media{position:relative}
.hero-media img{
  width:100%;
  aspect-ratio:16/11;
  object-fit:cover;
  border-radius:var(--radius-hero);
  box-shadow:var(--shadow-2);
}
.hero-float{
  position:absolute;
  right:18px;
  bottom:-26px;
  width:240px;
  min-height:96px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:14px;
  box-shadow:var(--shadow-3);
  padding:16px 18px;
}
.hero-float strong{display:block;font-size:26px;color:var(--brand-700);line-height:1.2;font-variant-numeric:tabular-nums}
.hero-float span{display:block;font-size:13px;color:var(--ink-500);line-height:1.6;margin-top:4px}

/* ---------- 概览卡 ---------- */
.overview-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.info-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  box-shadow:var(--shadow-2);
  padding:24px;
  transition:transform var(--ease),box-shadow var(--ease);
}
.info-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-3)}
.info-card .ic-icon{
  width:44px;
  height:44px;
  border-radius:12px;
  background:var(--brand-100);
  color:var(--brand-700);
  display:flex;
  align-items:center;
  justify-content:center;
  margin-bottom:16px;
}
.info-card .ic-icon svg{width:22px;height:22px}
.info-card h3{font-size:18px;margin-bottom:8px}
.info-card p{font-size:15px;color:var(--ink-500);line-height:1.75;margin:0 0 14px}
.meta-line{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  font-size:13px;
  color:var(--brand-700);
  font-weight:600;
}
.meta-line span{
  background:var(--brand-50);
  border-radius:999px;
  padding:4px 10px;
  font-weight:500;
}

/* ---------- 时间线 ---------- */
.timeline{margin-top:8px}
.tl-item{
  position:relative;
  display:grid;
  grid-template-columns:56px 1fr;
  gap:24px;
  padding-bottom:28px;
}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:"";
  position:absolute;
  left:21px;
  top:56px;
  bottom:0;
  width:2px;
  background:var(--brand-100);
}
.tl-item:last-child::before{display:none}
.tl-node{
  position:relative;
  z-index:1;
  width:44px;
  height:44px;
  border-radius:12px;
  background:var(--accent-600);
  color:#fff;
  display:flex;
  align-items:center;
  justify-content:center;
  font-weight:700;
  font-size:16px;
  font-variant-numeric:tabular-nums;
  box-shadow:0 10px 20px -12px rgba(217,119,42,.9);
}
.tl-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  box-shadow:var(--shadow-2);
  padding:24px;
  transition:transform var(--ease),box-shadow var(--ease);
}
.tl-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-3)}
.tl-card h3{font-size:19px;margin-bottom:10px}
.tl-card p{font-size:15px;color:var(--ink-700);line-height:1.8;margin:0 0 12px;max-width:none}
.tl-meta{
  margin-top:14px;
  padding-top:14px;
  border-top:1px dashed var(--line);
  font-size:13px;
  color:var(--brand-700);
  font-weight:600;
}
.check-list{list-style:none;display:grid;gap:8px;margin:12px 0 0}
.check-list li{display:flex;gap:10px;font-size:15px;line-height:1.7;color:var(--ink-700)}
.check-list .tick{
  flex:0 0 18px;
  width:18px;
  height:18px;
  margin-top:5px;
  border-radius:6px;
  background:var(--brand-50);
  color:var(--brand-700);
  display:flex;
  align-items:center;
  justify-content:center;
}
.check-list .tick svg{width:12px;height:12px}

/* ---------- 准备板块 ---------- */
.prep-grid{
  display:grid;
  grid-template-columns:5fr 7fr;
  gap:48px;
  align-items:center;
}
.prep-media img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  border-radius:var(--radius-img);
  box-shadow:var(--shadow-2);
}
.prep-body h2{margin-bottom:16px}
.prep-body p{font-size:16px;color:var(--ink-700);line-height:1.8}
.mini-list{display:grid;gap:12px;margin-top:24px}
.mini-item{
  display:flex;
  gap:14px;
  padding:16px 18px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:14px;
  box-shadow:var(--shadow-1);
  transition:transform var(--ease),box-shadow var(--ease);
}
.mini-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}
.mini-item .mi-icon{
  flex:0 0 36px;
  width:36px;
  height:36px;
  border-radius:10px;
  background:var(--brand-100);
  color:var(--brand-700);
  display:flex;
  align-items:center;
  justify-content:center;
}
.mini-item .mi-icon svg{width:19px;height:19px}
.mini-item h4{font-size:16px;margin-bottom:4px}
.mini-item p{font-size:14px;color:var(--ink-500);line-height:1.7;margin:0;max-width:none}

/* ---------- 表格 ---------- */
.table-wrap{
  overflow-x:auto;
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  background:var(--surface);
  box-shadow:var(--shadow-1);
  -webkit-overflow-scrolling:touch;
}
.table-wrap table{width:100%;min-width:640px;border-collapse:collapse}
.table-wrap th{
  background:var(--brand-50);
  color:var(--ink-900);
  font-size:14px;
  font-weight:600;
  text-align:left;
  padding:14px 18px;
  border-bottom:1px solid var(--line);
  white-space:nowrap;
}
.table-wrap td{
  padding:14px 18px;
  font-size:15px;
  color:var(--ink-700);
  border-bottom:1px solid var(--line);
  line-height:1.7;
}
.table-wrap tbody tr:nth-child(even){background:#FAFCFE}
.table-wrap tbody tr:last-child td{border-bottom:none}
.table-wrap td:first-child{color:var(--ink-900);font-weight:600}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:880px;margin:0 auto}
.faq-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:24px}
.accordion-item{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:14px;
  box-shadow:var(--shadow-1);
  margin-bottom:12px;
  overflow:hidden;
}
.accordion-item:last-child{margin-bottom:0}
.accordion-button{
  display:flex;
  align-items:center;
  gap:12px;
  width:100%;
  min-height:56px;
  padding:12px 20px;
  background:var(--surface);
  color:var(--ink-900);
  font-size:16px;
  font-weight:600;
  line-height:1.5;
  border:0;
  box-shadow:none !important;
  transition:color var(--ease);
}
.accordion-button:not(.collapsed){color:var(--brand-700)}
.accordion-button:focus{box-shadow:none !important;outline:none}
.accordion-button:focus-visible{box-shadow:0 0 0 3px rgba(44,133,196,.35) !important}
.acc-icon{
  flex:0 0 28px;
  width:28px;
  height:28px;
  border-radius:8px;
  background:var(--brand-50);
  color:var(--brand-700);
  display:flex;
  align-items:center;
  justify-content:center;
  transition:transform 220ms cubic-bezier(.2,.7,.3,1),background var(--ease),color var(--ease);
}
.acc-icon svg{width:14px;height:14px}
.accordion-button:not(.collapsed) .acc-icon{
  transform:rotate(45deg);
  background:var(--accent-100);
  color:var(--accent-600);
}
.accordion-button::after{
  content:"";
  width:10px;
  height:10px;
  margin-left:auto;
  background-image:none;
  border-right:2px solid var(--brand-500);
  border-bottom:2px solid var(--brand-500);
  transform:rotate(45deg);
  transition:transform 220ms cubic-bezier(.2,.7,.3,1);
  flex:0 0 10px;
}
.accordion-button.collapsed::after{transform:rotate(-45deg)}
.accordion-body{
  padding:4px 20px 20px 60px;
  font-size:15px;
  line-height:1.8;
  color:var(--ink-700);
}
.accordion-body p{margin:0;max-width:none}
.faq-aside{
  display:none;
  border:1.5px solid var(--brand-500);
  border-radius:var(--radius-md);
  background:var(--surface);
  padding:22px;
  box-shadow:var(--shadow-1);
  height:fit-content;
}
.faq-aside h4{font-size:17px;margin-bottom:8px}
.faq-aside p{font-size:14px;color:var(--ink-500);line-height:1.7;margin-bottom:16px}

/* ---------- CTA ---------- */
.cta-band{padding:0 0 96px}
.cta-card{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:40px;
  background:var(--brand-800);
  border-radius:var(--radius-lg);
  padding:40px;
  box-shadow:var(--shadow-3);
}
.cta-card h2{color:#fff;font-size:28px;margin-bottom:10px}
.cta-card p{color:rgba(255,255,255,.82);font-size:15px;line-height:1.8;margin:0;max-width:620px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;flex:0 0 auto}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-800);color:rgba(255,255,255,.88);padding:72px 0 0;margin-top:0}
.footer-grid{
  display:grid;
  grid-template-columns:2fr 1fr 1fr 1.2fr;
  gap:32px;
  padding-bottom:48px;
}
.footer-brand .brand{margin-bottom:16px}
.footer-brand .brand-mark i{background:rgba(255,255,255,.9)}
.footer-brand .brand-mark i:nth-child(2){background:var(--brand-500)}
.footer-brand .brand-mark i:nth-child(3){background:var(--accent-600)}
.footer-brand .brand-text{color:#fff}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.72);margin-bottom:16px;max-width:420px}
.footer-contact-line{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:rgba(255,255,255,.82);
  margin-bottom:10px;
}
.footer-contact-line svg{width:16px;height:16px;flex:0 0 16px;color:var(--brand-500)}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:600}
.footer-links{list-style:none;display:grid;gap:10px}
.footer-links a{color:rgba(255,255,255,.78);font-size:14px;transition:color var(--ease),padding-left var(--ease)}
.footer-links a:hover{color:#fff;padding-left:4px}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 28px;
  font-size:13px;
  color:rgba(255,255,255,.6);
}
.footer-bottom p{margin:0;max-width:none}
.footer-bottom ul{list-style:none;display:flex;gap:18px}
.footer-bottom a{color:rgba(255,255,255,.66);font-size:13px}
.footer-bottom a:hover{color:#fff}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .section{padding:72px 0}
  .cta-band{padding-bottom:72px}
  .nav-item{font-size:13px;padding:0 10px}
  .brand-text{font-size:15px}
  .hero-grid{gap:36px}
}
@media (min-width:1200px){
  .faq-layout{grid-template-columns:minmax(0,1fr) 240px}
  .faq-aside{display:block}
  .faq-wrap{max-width:none;margin:0}
}
@media (max-width:991.98px){
  .nav-toggle{display:inline-flex}
  .nav-links{
    position:absolute;
    top:calc(100% + 10px);
    left:0;
    right:0;
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:8px;
    padding:12px;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:18px;
    box-shadow:var(--shadow-3);
    margin-left:0;
  }
  .nav-card.open .nav-links{display:flex}
  .nav-item{height:48px;width:100%;justify-content:flex-start;font-size:15px}
  .hero{padding:32px 0 64px}
  .hero-grid{grid-template-columns:1fr;min-height:0;gap:36px}
  .hero-float{position:static;width:100%;margin-top:16px}
  .overview-grid{grid-template-columns:1fr 1fr}
  .prep-grid{grid-template-columns:1fr;gap:32px}
  .cta-card{flex-direction:column;align-items:flex-start;padding:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:767.98px){
  body{font-size:16px}
  .container{padding:0 20px}
  .section{padding:56px 0}
  .cta-band{padding:0 0 56px}
  h1{font-size:30px}
  h2{font-size:24px}
  h3{font-size:18px}
  .site-header{padding-top:12px}
  .nav-card{border-radius:16px;padding:8px 12px;min-height:64px}
  .brand-text{font-size:14px}
  .nav-cta .btn{height:36px;padding:0 10px;font-size:13px}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:28px}
  .overview-grid{grid-template-columns:1fr;gap:16px}
  .info-card{padding:20px}
  .tl-item{grid-template-columns:44px 1fr;gap:14px}
  .tl-item::before{left:21px;top:52px}
  .tl-card{padding:20px}
  .tl-node{width:40px;height:40px;font-size:15px}
  .accordion-body{padding:4px 16px 18px 16px}
  .acc-icon{flex:0 0 26px;width:26px;height:26px}
  .cta-card{padding:28px 24px;border-radius:20px}
  .cta-card h2{font-size:22px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px}
  .site-footer{padding-top:56px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .footer-bottom ul{flex-wrap:wrap;gap:14px}
  .hero-float strong{font-size:22px}
}
@media (max-width:400px){
  .brand-text{font-size:13px;letter-spacing:-.3px}
}

/* roulang page: category4 */
:root{
  --bs-primary:#1B5E96;
  --bs-primary-rgb:27,94,150;
  --bs-body-color:#34495B;
  --bs-body-bg:#F6F9FC;
  --bs-border-color:#DDE7F0;
  --bs-border-radius:10px;
  --bs-link-color:#1B5E96;
  --bs-link-hover-color:#2C85C4;
  --bs-font-sans-serif:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;

  --brand-800:#123E66;
  --brand-700:#1B5E96;
  --brand-500:#2C85C4;
  --brand-100:#E4EFF8;
  --brand-50:#F3F8FC;
  --accent-600:#D9772A;
  --accent-100:#FCEEE0;
  --ink-900:#152430;
  --ink-700:#34495B;
  --ink-500:#6B7E8D;
  --line:#DDE7F0;
  --bg:#F6F9FC;
  --surface:#FFFFFF;
  --r-lg:24px;
  --r-card:16px;
  --r-btn:10px;
  --r-img:12px;
  --r-hero:20px;
  --sh1:0 1px 2px rgba(18,62,102,.06);
  --sh2:0 10px 26px -14px rgba(18,62,102,.20);
  --sh3:0 18px 40px -16px rgba(18,62,102,.28);
  --t:180ms cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"Inter","PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:17px;
  line-height:1.8;
  color:var(--ink-700);
  background:var(--bg);
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--brand-700);text-decoration:none;transition:color var(--t);}
a:hover{color:var(--brand-500);}
h1,h2,h3,h4{color:var(--ink-900);margin:0;font-weight:700;}
h1{font-size:44px;line-height:1.25;letter-spacing:-.2px;}
h2{font-size:32px;line-height:1.3;}
h3{font-size:22px;line-height:1.4;font-weight:600;}
h4{font-size:18px;line-height:1.5;font-weight:600;}
p{margin:0 0 1.1em;max-width:760px;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(44,133,196,.35);border-radius:8px;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:32px;
  padding-right:32px;
}
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.bg-soft{background:var(--brand-50);}
.bg-white{background:var(--surface);}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  padding-top:16px;
  padding-bottom:8px;
}
.nav-card{
  display:flex;
  align-items:center;
  gap:16px;
  height:76px;
  padding:0 18px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:18px;
  box-shadow:var(--sh2);
  transition:height var(--t),box-shadow var(--t),background var(--t);
}
.site-header.scrolled .nav-card{
  height:64px;
  box-shadow:var(--sh1);
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(6px);
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:none;
  color:var(--brand-700);
  font-weight:700;
  font-size:17px;
  letter-spacing:-.2px;
}
.brand:hover{color:var(--brand-500);}
.brand-mark{
  width:30px;height:30px;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:3px;
  flex:none;
}
.brand-mark i{display:block;border-radius:4px;background:var(--brand-700);}
.brand-mark i:nth-child(1){grid-row:span 2;}
.brand-mark i:nth-child(2){background:var(--brand-500);}
.brand-mark i:nth-child(3){background:var(--accent-600);}
.brand-text{white-space:nowrap;}
.nav-links{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  flex:1 1 auto;
}
.nav-item{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:7px;
  height:44px;
  min-width:112px;
  padding:0 12px;
  border-radius:12px;
  background:var(--brand-50);
  border:1.5px solid transparent;
  color:var(--ink-700);
  font-size:14px;
  font-weight:500;
  white-space:nowrap;
  transition:all var(--t);
}
.nav-item svg{width:18px;height:18px;flex:none;}
.nav-item:hover{background:var(--brand-100);color:var(--brand-700);transform:translateY(-1px);}
.nav-item.active{
  background:var(--brand-100);
  color:var(--brand-700);
  border-color:var(--brand-700);
  font-weight:600;
}
.nav-cta{flex:none;}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--line);
  border-radius:10px;
  background:var(--brand-50);
  position:relative;
  cursor:pointer;
}
.nav-toggle::before,
.nav-toggle::after,
.nav-toggle span{
  content:"";
  position:absolute;
  left:12px;right:12px;
  height:2px;
  border-radius:2px;
  background:var(--brand-700);
  transition:all var(--t);
}
.nav-toggle::before{top:15px;}
.nav-toggle span{top:21px;}
.nav-toggle::after{top:27px;}
body.nav-open .nav-toggle::before{transform:translateY(6px) rotate(45deg);}
body.nav-open .nav-toggle span{opacity:0;}
body.nav-open .nav-toggle::after{transform:translateY(-6px) rotate(-45deg);}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 22px;
  border-radius:var(--r-btn);
  border:1.5px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1;
  text-decoration:none;
  cursor:pointer;
  transition:all var(--t);
  box-shadow:none;
}
.btn-primary{
  background:var(--brand-700);
  border-color:var(--brand-700);
  color:#fff;
  box-shadow:0 10px 22px -14px rgba(18,62,102,.75);
}
.btn-primary:hover{
  background:var(--brand-500);
  border-color:var(--brand-500);
  color:#fff;
  transform:translateY(-1px);
  box-shadow:var(--sh3);
}
.btn-outline{
  background:#fff;
  border-color:var(--line);
  color:var(--brand-700);
}
.btn-outline:hover{
  background:var(--brand-50);
  border-color:var(--brand-500);
  color:var(--brand-700);
  transform:translateY(-1px);
}
.btn-accent{
  background:var(--accent-600);
  border-color:var(--accent-600);
  color:#fff;
  box-shadow:0 10px 22px -14px rgba(217,119,42,.85);
}
.btn-accent:hover{
  background:#c96a20;
  border-color:#c96a20;
  color:#fff;
  transform:translateY(-1px);
}
.btn-ghost{
  background:transparent;
  border-color:rgba(255,255,255,.5);
  color:#fff;
}
.btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff;}
.btn-sm{height:36px;padding:0 16px;font-size:14px;}
.btn-block{width:100%;}
.btn-link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--brand-700);
  font-weight:600;
  font-size:15px;
}
.btn-link-arrow svg{width:18px;height:18px;transition:transform var(--t);}
.btn-link-arrow:hover svg{transform:translateX(3px);}

/* ---------- badges & headings ---------- */
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:6px 14px;
  border-radius:999px;
  background:var(--brand-100);
  color:var(--brand-700);
  font-size:13px;
  font-weight:600;
  letter-spacing:.2px;
}
.badge-soft{
  display:inline-flex;
  align-items:center;
  padding:5px 12px;
  border-radius:999px;
  background:var(--brand-100);
  color:var(--brand-700);
  font-size:13px;
  font-weight:500;
}
.badge-accent{
  display:inline-flex;
  align-items:center;
  padding:5px 12px;
  border-radius:999px;
  background:var(--accent-100);
  color:var(--accent-600);
  font-size:13px;
  font-weight:600;
}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:40px;
}
.section-head .lead{
  margin-top:12px;
  font-size:16px;
  color:var(--ink-500);
  max-width:640px;
}
.text-accent{color:var(--accent-600);}

/* ---------- breadcrumb ---------- */
.crumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--ink-500);
  margin-bottom:20px;
  flex-wrap:wrap;
}
.crumb a{color:var(--ink-500);}
.crumb a:hover{color:var(--brand-700);}
.crumb .sep{color:var(--line);}
.crumb .now{color:var(--ink-500);}

/* ---------- hero ---------- */
.page-hero{
  position:relative;
  padding:56px 0 80px;
  background:
    radial-gradient(680px 320px at 88% -12%, rgba(228,239,248,.9), rgba(246,249,252,0) 70%),
    var(--bg);
  overflow:hidden;
}
.page-hero::after{
  content:"";
  position:absolute;
  top:-60px;right:-80px;
  width:480px;height:320px;
  background:var(--brand-100);
  opacity:.55;
  transform:rotate(-8deg);
  border-radius:36px;
  z-index:0;
}
.page-hero .container{position:relative;z-index:1;}
.hero-grid{
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:48px;
  align-items:center;
}
.hero-title{margin:18px 0 16px;}
.hero-sub{
  font-size:18px;
  line-height:1.8;
  color:var(--ink-700);
  max-width:620px;
  margin-bottom:28px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:28px;}
.trust-row{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:20px;
  font-size:14px;
  color:var(--ink-700);
}
.trust-row span{
  display:inline-flex;
  align-items:center;
  gap:8px;
}
.trust-row span+span::before{
  content:"";
  width:1px;height:14px;
  background:var(--line);
  margin-right:20px;
  display:inline-block;
}
.trust-row svg{width:18px;height:18px;color:var(--brand-500);}
.hero-visual{position:relative;}
.hero-visual img{
  width:100%;
  aspect-ratio:16/11;
  object-fit:cover;
  border-radius:var(--r-hero);
  box-shadow:var(--sh2);
}
.float-card{
  position:absolute;
  right:-14px;
  bottom:-20px;
  width:240px;
  padding:16px 18px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:14px;
  box-shadow:var(--sh3);
}
.float-card .num{
  font-family:"Inter",system-ui,sans-serif;
  font-size:28px;
  font-weight:700;
  color:var(--brand-700);
  line-height:1.2;
}
.float-card .cap{font-size:13px;color:var(--ink-500);}

/* ---------- compare ---------- */
.compare-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:24px;
}
.compare-card{
  position:relative;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh2);
  padding:32px 28px;
  transition:transform var(--t),box-shadow var(--t);
}
.compare-card:hover{transform:translateY(-2px);box-shadow:var(--sh3);}
.compare-card.recommend{
  background:var(--brand-100);
  border:1.5px solid var(--brand-700);
}
.compare-card h3{margin-bottom:10px;}
.compare-card .desc{font-size:15px;color:var(--ink-500);margin-bottom:20px;}
.tag-top{
  position:absolute;
  top:-14px;
  right:24px;
  padding:6px 14px;
  border-radius:999px;
  background:var(--accent-600);
  color:#fff;
  font-size:13px;
  font-weight:600;
  box-shadow:0 8px 18px -10px rgba(217,119,42,.9);
}
.check-list li{
  display:flex;
  gap:12px;
  align-items:flex-start;
  padding:11px 0;
  font-size:15px;
  line-height:1.7;
  color:var(--ink-700);
  border-bottom:1px dashed var(--line);
}
.check-list li:last-child{border-bottom:none;}
.icon-box{
  width:18px;height:18px;
  border-radius:6px;
  background:#fff;
  border:1px solid var(--brand-500);
  color:var(--brand-700);
  display:grid;
  place-items:center;
  flex:none;
  margin-top:4px;
}
.icon-box svg{width:11px;height:11px;}
.compare-card .btn{margin-top:24px;}
.compare-card.recommend .icon-box{background:#fff;border-color:var(--brand-700);}

/* ---------- scene cards ---------- */
.card-grid{display:grid;gap:24px;}
.grid-4{grid-template-columns:repeat(4,1fr);}
.grid-3{grid-template-columns:repeat(3,1fr);}
.info-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh2);
  padding:26px 24px;
  height:100%;
  transition:transform var(--t),box-shadow var(--t);
}
.info-card:hover{transform:translateY(-2px);box-shadow:var(--sh3);}
.info-card .ico{
  width:44px;height:44px;
  border-radius:12px;
  background:var(--brand-50);
  color:var(--brand-700);
  display:grid;
  place-items:center;
  margin-bottom:16px;
}
.info-card .ico svg{width:22px;height:22px;}
.info-card h3{font-size:17px;margin-bottom:10px;}
.info-card p{font-size:14px;line-height:1.75;color:var(--ink-500);}

/* ---------- steps ---------- */
.steps{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
  position:relative;
}
.step{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh2);
  padding:26px 24px;
  transition:transform var(--t),box-shadow var(--t);
}
.step:hover{transform:translateY(-2px);box-shadow:var(--sh3);}
.step .no{
  width:40px;height:40px;
  border-radius:12px;
  background:var(--accent-600);
  color:#fff;
  font-family:"Inter",system-ui,sans-serif;
  font-weight:700;
  font-size:16px;
  display:grid;
  place-items:center;
  margin-bottom:18px;
}
.step h3{font-size:17px;margin-bottom:10px;}
.step p{font-size:14px;line-height:1.75;color:var(--ink-500);}
.step .note{
  margin-top:16px;
  font-size:13px;
  color:var(--brand-700);
  display:flex;
  align-items:center;
  gap:6px;
}
.step .note svg{width:15px;height:15px;}

/* ---------- stat strip ---------- */
.stat-strip{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.stat{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh1);
  padding:28px 24px;
  text-align:center;
}
.stat .num{
  font-family:"Inter",system-ui,sans-serif;
  font-size:34px;
  font-weight:700;
  color:var(--brand-700);
  line-height:1.2;
}
.stat .num small{font-size:16px;font-weight:600;margin-left:2px;}
.stat .cap{font-size:14px;color:var(--ink-500);margin-top:6px;}

/* ---------- faq ---------- */
.acc .accordion-item{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:14px;
  margin-bottom:12px;
  overflow:hidden;
  box-shadow:var(--sh1);
  transition:box-shadow var(--t),border-color var(--t);
}
.acc .accordion-item:last-child{margin-bottom:0;}
.acc .accordion-button{
  display:flex;
  align-items:center;
  gap:12px;
  min-height:56px;
  padding:14px 20px;
  font-size:16px;
  font-weight:600;
  color:var(--ink-900);
  background:var(--surface);
  box-shadow:none;
  border:none;
}
.acc .accordion-button:not(.collapsed){
  color:var(--brand-700);
  background:var(--surface);
  box-shadow:none;
}
.acc .accordion-button:focus{box-shadow:none;border:none;outline:none;}
.acc .accordion-button::before{
  content:"";
  width:28px;height:28px;
  border-radius:8px;
  background:var(--brand-50);
  flex:none;
  order:-1;
}
.acc .accordion-button::after{
  content:"+";
  background-image:none !important;
  width:28px;height:28px;
  margin-left:auto;
  border-radius:8px;
  background-color:var(--brand-50);
  color:var(--brand-700);
  font-size:18px;
  font-weight:600;
  display:flex;
  align-items:center;
  justify-content:center;
  transform:none;
  transition:transform 220ms cubic-bezier(.2,.7,.3,1),color 220ms,background-color 220ms;
}
.acc .accordion-button:not(.collapsed)::after{
  transform:rotate(45deg);
  color:var(--accent-600);
  background-color:var(--accent-100);
}
.acc .accordion-body{
  padding:4px 20px 22px 60px;
  font-size:15px;
  line-height:1.8;
  color:var(--ink-700);
}
.acc .accordion-item:has(.accordion-button:not(.collapsed)){
  border-left:3px solid var(--brand-700);
  box-shadow:var(--sh2);
}
.help-card{
  background:var(--surface);
  border:1.5px solid var(--brand-700);
  border-radius:var(--r-card);
  padding:26px 24px;
  box-shadow:var(--sh2);
  position:sticky;
  top:110px;
}
.help-card h3{font-size:18px;margin-bottom:10px;}
.help-card p{font-size:14px;line-height:1.75;color:var(--ink-500);margin-bottom:18px;}
.help-card .line{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:14px;
  color:var(--ink-700);
  padding:8px 0;
  border-top:1px dashed var(--line);
}
.help-card .line svg{width:18px;height:18px;color:var(--brand-500);flex:none;}

/* ---------- cta band ---------- */
.cta-band{padding:0 0 96px;}
.cta-inner{
  background:var(--brand-800);
  border-radius:var(--r-lg);
  padding:44px 40px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  position:relative;
  overflow:hidden;
}
.cta-inner::after{
  content:"";
  position:absolute;
  right:-60px;bottom:-90px;
  width:280px;height:280px;
  border-radius:50%;
  background:rgba(255,255,255,.06);
}
.cta-inner h2{color:#fff;font-size:28px;margin-bottom:10px;position:relative;}
.cta-inner p{color:rgba(255,255,255,.78);font-size:15px;margin:0;max-width:560px;position:relative;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;position:relative;z-index:1;}

/* ---------- footer ---------- */
.site-footer{
  background:var(--brand-800);
  color:rgba(255,255,255,.9);
  padding:72px 0 0;
}
.site-footer h4{
  color:#fff;
  font-size:16px;
  margin-bottom:18px;
}
.site-footer .brand{color:#fff;font-size:18px;}
.site-footer .brand:hover{color:#fff;}
.site-footer .brand-mark i:first-child{background:#fff;}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:32px;
}
.footer-brand p{
  font-size:14px;
  line-height:1.8;
  color:rgba(255,255,255,.72);
  margin:18px 0 20px;
  max-width:420px;
}
.footer-contact-line{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:14px;
  color:rgba(255,255,255,.8);
  padding:5px 0;
}
.footer-contact-line svg{width:18px;height:18px;flex:none;color:rgba(255,255,255,.65);}
.footer-links li{margin-bottom:12px;}
.footer-links a{
  color:rgba(255,255,255,.78);
  font-size:14px;
}
.footer-links a:hover{color:#fff;}
.footer-bottom{
  margin-top:56px;
  border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:rgba(255,255,255,.62);
}
.footer-bottom a{color:rgba(255,255,255,.72);}
.footer-bottom a:hover{color:#fff;}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .section{padding:72px 0;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero-visual{max-width:560px;}
  .grid-4{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:repeat(2,1fr);}
  .help-card{position:static;}
}
@media (max-width:991px){
  .nav-links{
    position:absolute;
    top:calc(100% + 12px);
    left:0;
    right:0;
    display:none;
    grid-template-columns:1fr 1fr;
    gap:10px;
    padding:14px;
    background:#fff;
    border:1px solid var(--line);
    border-radius:16px;
    box-shadow:var(--sh3);
    justify-content:stretch;
  }
  body.nav-open .nav-links{display:grid;}
  .nav-item{width:100%;min-width:0;justify-content:flex-start;padding:0 14px;}
  .nav-toggle{display:block;}
  .nav-card{position:relative;justify-content:space-between;}
  .nav-cta .btn{height:40px;padding:0 14px;font-size:14px;}
  .compare-grid{grid-template-columns:1fr;}
  .grid-3{grid-template-columns:1fr 1fr;}
  .stat-strip{grid-template-columns:1fr;gap:16px;}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:36px 32px;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .site-footer{padding-top:56px;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .container{padding-left:20px;padding-right:20px;}
  .section{padding:56px 0;}
  h1{font-size:30px;}
  h2{font-size:24px;}
  h3{font-size:18px;}
  .hero-title{font-size:30px;}
  .hero-sub{font-size:16px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:28px;}
  .grid-4,.grid-3,.steps{grid-template-columns:1fr;gap:16px;}
  .compare-card{padding:24px 20px;}
  .cta-band{padding-bottom:56px;}
  .cta-inner{padding:32px 24px;}
  .cta-inner h2{font-size:22px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .float-card{right:0;left:0;margin:0 auto;width:calc(100% - 24px);bottom:-14px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .acc .accordion-body{padding-left:20px;}
  .page-hero::after{width:280px;height:200px;}
}
@media (max-width:575px){
  .btn{width:100%;}
  .hero-actions .btn{width:100%;}
  .nav-cta .btn{width:auto;}
  .trust-row{gap:12px;}
  .trust-row span+span::before{display:none;}
}