:root{
  --lp-ink:#072b40;
  --lp-text:#31566b;
  --lp-muted:#668296;
  --lp-blue:#087bbd;
  --lp-blue-dark:#055d91;
  --lp-cyan:#dff3fc;
  --lp-paper:#f3f8fb;
  --lp-white:#fff;
  --lp-line:#cbdce6;
  --lp-shadow:0 20px 60px rgba(5,43,64,.12);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body.promo-page{margin:0;color:var(--lp-ink);background:#fff;font-family:"Microsoft YaHei","PingFang SC","Noto Sans SC",Arial,sans-serif;-webkit-font-smoothing:antialiased}
.promo-page a{text-decoration:none}
.promo-page button,.promo-page input,.promo-page select,.promo-page textarea{font:inherit}
.lp-wrap{width:min(1160px,calc(100% - 48px));margin:0 auto}
.lp-header{position:sticky;top:0;z-index:50;display:flex;align-items:center;justify-content:space-between;min-height:72px;padding:10px max(24px,calc((100vw - 1160px)/2));background:rgba(255,255,255,.96);border-bottom:1px solid var(--lp-line);backdrop-filter:blur(14px)}
.lp-brand{display:flex;align-items:center;gap:11px;color:var(--lp-ink)}
.lp-brand img{display:block;width:44px;height:44px;object-fit:contain}
.lp-brand span{display:flex;flex-direction:column;line-height:1.05}.lp-brand strong{font-size:20px}.lp-brand small{margin-top:6px;color:#4e819d;font-size:9px;letter-spacing:.18em}
.lp-header-contact{display:flex;align-items:center;gap:18px}.lp-phone{color:var(--lp-ink);font-size:16px;font-weight:800}.lp-phone small{display:block;color:var(--lp-muted);font-size:10px;font-weight:500;letter-spacing:.08em}
.lp-header-cta,.lp-btn{display:inline-flex;min-height:46px;align-items:center;justify-content:center;padding:0 22px;border:1px solid var(--lp-blue);border-radius:3px;background:var(--lp-blue);color:#fff;font-weight:800;transition:.2s ease}
.lp-header-cta:hover,.lp-btn:hover{background:var(--lp-blue-dark);border-color:var(--lp-blue-dark);transform:translateY(-1px)}
.lp-btn.secondary{background:#fff;color:var(--lp-blue)}
.lp-btn.secondary:hover{background:var(--lp-paper);color:var(--lp-blue-dark)}
.lp-btn.ghost{border-color:rgba(255,255,255,.45);background:transparent;color:#fff}
.lp-btn.ghost:hover{border-color:#fff;background:rgba(255,255,255,.08)}
.lp-btn-link{display:inline-flex;align-items:center;color:var(--lp-blue);font-size:15px;font-weight:800}
.lp-btn-link::after{content:"→";margin-left:8px}
.lp-hero{position:relative;overflow:hidden;background:linear-gradient(135deg,#f2f8fb 0%,#fff 62%,#e9f4f9 100%);border-bottom:1px solid var(--lp-line)}
.lp-hero::before{position:absolute;top:-180px;right:-120px;width:500px;height:500px;border:1px solid rgba(8,123,189,.15);border-radius:50%;content:""}
.lp-hero-grid{position:relative;display:grid;grid-template-columns:minmax(0,1fr) minmax(430px,1fr);gap:44px;align-items:center;padding:42px 0 44px}
.lp-breadcrumbs{margin-bottom:26px;color:#68869a;font-size:13px}.lp-breadcrumbs a{color:#55788c}.lp-breadcrumbs span{margin:0 7px}
.lp-kicker{display:block;margin-bottom:14px;color:var(--lp-blue);font-size:12px;font-weight:900;letter-spacing:.17em;text-transform:uppercase}
.lp-hero h1{max-width:720px;margin:0;font-size:clamp(38px,3.6vw,48px);line-height:1.13;letter-spacing:-.045em}
.lp-hero h1 em{display:block;font-size:clamp(26px,2.55vw,34px);line-height:1.4;margin-top:12px;color:var(--lp-blue);font-style:normal}
.lp-lead{max-width:700px;margin:24px 0 0;color:var(--lp-text);font-size:18px;line-height:1.85}
.lp-offer-note{display:flex;gap:12px;align-items:flex-start;margin:26px 0 0;padding:15px 17px;background:#fff;border-left:4px solid var(--lp-blue);box-shadow:0 8px 30px rgba(5,43,64,.07)}
.lp-offer-note b{flex:0 0 auto;color:var(--lp-blue);font-size:14px}.lp-offer-note span{color:var(--lp-text);font-size:14px;line-height:1.65}
.lp-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin-top:24px}.lp-actions small{flex-basis:100%;color:var(--lp-muted);font-size:13px;line-height:1.65}
.lp-hero-media{position:relative;min-height:400px;margin:0}.lp-hero-media img{display:block;width:100%;height:400px;object-fit:cover;box-shadow:var(--lp-shadow)}
.lp-trustline{border-bottom:1px solid var(--lp-line);background:#fff}.lp-trust-grid{display:grid;grid-template-columns:1.35fr 1fr 1fr 1.25fr}.lp-trust-grid>div{min-height:92px;padding:19px 22px;border-right:1px solid var(--lp-line)}.lp-trust-grid>div:last-child{border-right:0}.lp-trust-grid span{display:block;margin-bottom:6px;color:var(--lp-muted);font-size:11px}.lp-trust-grid strong{font-size:16px;line-height:1.45}.lp-trust-grid .accent{background:var(--lp-ink);color:#fff}.lp-trust-grid .accent span{color:#9fc0d2}.lp-trust-grid .accent strong{color:#fff}
.lp-section{padding:56px 0}.lp-section.soft{background:var(--lp-paper)}.lp-section.dark{background:var(--lp-ink);color:#fff}.lp-section.tint{background:#eaf5fa}
.lp-section-head{display:grid;grid-template-columns:minmax(0,.9fr) minmax(320px,.62fr);gap:70px;align-items:end;margin-bottom:36px}.lp-section-head h2{margin:0;font-size:clamp(28px,2.7vw,36px);line-height:1.18;letter-spacing:-.035em}.lp-section-head p{margin:0;color:var(--lp-text);font-size:16px;line-height:1.85}.dark .lp-section-head p{color:#bcd3df}
.lp-scenarios{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.lp-scenario{position:relative;min-height:220px;padding:24px;background:#fff;border:1px solid var(--lp-line);transition:.2s ease}.lp-scenario:hover{border-color:#87bed9;box-shadow:0 14px 38px rgba(5,43,64,.09);transform:translateY(-3px)}
.lp-scenario>span{display:flex;width:34px;height:34px;align-items:center;justify-content:center;margin-bottom:24px;border-radius:50%;background:var(--lp-cyan);color:var(--lp-blue);font-size:12px;font-weight:900}.lp-scenario h3{margin:0 0 12px;font-size:22px;line-height:1.4}.lp-scenario p{margin:0;color:var(--lp-text);font-size:15px;line-height:1.8}.lp-scenario b{display:block;margin-top:18px;color:var(--lp-blue);font-size:13px}
.lp-offer{position:relative;overflow:hidden;background:linear-gradient(120deg,#063650,#075f92 62%,#087bbd);color:#fff}.lp-offer::after{position:absolute;right:-70px;bottom:-160px;width:420px;height:420px;border:1px solid rgba(255,255,255,.18);border-radius:50%;content:""}.lp-offer-grid{position:relative;z-index:1;display:grid;grid-template-columns:minmax(0,1fr) minmax(360px,.75fr);gap:64px;align-items:center;padding:48px 0}.lp-offer h2{max-width:690px;margin:0;font-size:clamp(28px,3vw,38px);line-height:1.18}.lp-offer-copy>p{max-width:700px;margin:20px 0;color:#cce1ec;font-size:17px;line-height:1.8}.lp-offer-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px 22px;margin:24px 0 0;padding:0;list-style:none}.lp-offer-list li{position:relative;padding-left:20px;color:#eef8fc;font-size:14px;line-height:1.6}.lp-offer-list li::before{position:absolute;left:0;color:#70d1ff;content:"✓";font-weight:900}
.lp-offer-panel{padding:28px;background:#fff;color:var(--lp-ink);box-shadow:0 22px 50px rgba(0,0,0,.17)}.lp-offer-panel>span{color:var(--lp-blue);font-size:11px;font-weight:900;letter-spacing:.14em}.lp-offer-panel h3{margin:9px 0 17px;font-size:24px;line-height:1.4}.lp-offer-panel ol{margin:0 0 22px;padding:0;counter-reset:steps;list-style:none}.lp-offer-panel li{position:relative;padding:12px 0 12px 42px;border-top:1px solid var(--lp-line);color:var(--lp-text);font-size:14px;line-height:1.6;counter-increment:steps}.lp-offer-panel li::before{position:absolute;top:11px;left:0;display:flex;width:28px;height:28px;align-items:center;justify-content:center;border-radius:50%;background:var(--lp-cyan);color:var(--lp-blue);content:counter(steps);font-size:11px;font-weight:900}.lp-offer-panel .lp-btn{width:100%}.lp-offer-panel small{display:block;margin-top:10px;color:var(--lp-muted);font-size:12px;line-height:1.6;text-align:center}
.lp-solution-grid{display:grid;grid-template-columns:.83fr 1.17fr;gap:30px}.lp-outcome{padding:34px;background:var(--lp-paper);border:1px solid var(--lp-line)}.lp-outcome>span{color:var(--lp-blue);font-size:11px;font-weight:900;letter-spacing:.12em}.lp-outcome h3{margin:11px 0 16px;font-size:27px;line-height:1.35}.lp-outcome p{margin:0;color:var(--lp-text);font-size:15px;line-height:1.85}.lp-outcome .lp-btn-link{margin-top:22px}
.lp-deliverables{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--lp-line);border-left:1px solid var(--lp-line)}.lp-deliverable{min-height:190px;padding:27px;border-right:1px solid var(--lp-line);border-bottom:1px solid var(--lp-line)}.lp-deliverable span{color:var(--lp-blue);font-size:11px;font-weight:900}.lp-deliverable h3{margin:24px 0 9px;font-size:20px}.lp-deliverable p{margin:0;color:var(--lp-text);font-size:14px;line-height:1.75}
.lp-process{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid rgba(255,255,255,.25)}.lp-process article{min-height:180px;padding:28px;border-right:1px solid rgba(255,255,255,.22)}.lp-process article:last-child{border-right:0}.lp-process span{color:#67cffc;font-size:12px;font-weight:900}.lp-process h3{margin:28px 0 10px;font-size:20px}.lp-process p{margin:0;color:#bcd3df;font-size:14px;line-height:1.75}
.lp-proof-grid{display:grid;grid-template-columns:1fr 1fr;gap:34px;align-items:stretch}.lp-proof-image{position:relative;min-height:470px;margin:0}.lp-proof-image img{display:block;width:100%;height:100%;min-height:470px;object-fit:cover}.lp-proof-image figcaption{position:absolute;right:0;bottom:0;left:0;padding:34px 24px 20px;background:linear-gradient(transparent,rgba(3,36,54,.84));color:#fff;font-size:13px}
.lp-proof-copy{display:flex;flex-direction:column;justify-content:center}.lp-proof-copy h2{margin:0 0 18px;font-size:clamp(31px,3.4vw,44px);line-height:1.2}.lp-proof-copy>p{margin:0 0 24px;color:var(--lp-text);font-size:16px;line-height:1.85}.lp-proof-points{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--lp-line);border-left:1px solid var(--lp-line)}.lp-proof-points div{min-height:130px;padding:20px;border-right:1px solid var(--lp-line);border-bottom:1px solid var(--lp-line)}.lp-proof-points span{display:block;color:var(--lp-muted);font-size:11px}.lp-proof-points strong{display:block;margin-top:12px;font-size:17px;line-height:1.45}.lp-proof-copy .lp-btn-link{margin-top:22px}
.lp-tech-layout{display:grid;grid-template-columns:.7fr 1.3fr;gap:50px}.lp-tech-intro h2{margin:0 0 18px;font-size:clamp(31px,3.6vw,44px);line-height:1.2}.lp-tech-intro p{margin:0;color:var(--lp-text);font-size:15px;line-height:1.85}.lp-tech-list{border-top:1px solid var(--lp-line)}.lp-tech-list details{padding:20px 4px;border-bottom:1px solid var(--lp-line)}.lp-tech-list summary{display:flex;cursor:pointer;align-items:center;justify-content:space-between;gap:20px;font-size:18px;font-weight:800}.lp-tech-list summary::after{color:var(--lp-blue);content:"＋";font-size:22px}.lp-tech-list details[open] summary::after{content:"－"}.lp-tech-list p,.lp-tech-list ul{margin:14px 0 0;color:var(--lp-text);font-size:14px;line-height:1.8}.lp-tech-list ul{padding-left:20px}
.lp-faq{display:grid;grid-template-columns:.62fr 1.38fr;gap:56px}.lp-faq h2{margin:0;font-size:clamp(31px,3.6vw,44px);line-height:1.2}.lp-faq-list{border-top:1px solid var(--lp-line)}.lp-faq-list details{padding:21px 0;border-bottom:1px solid var(--lp-line)}.lp-faq-list summary{cursor:pointer;font-size:18px;font-weight:800;line-height:1.5}.lp-faq-list p{margin:12px 0 0;color:var(--lp-text);font-size:14px;line-height:1.8}
.lp-final{padding:62px 0;background:var(--lp-blue);color:#fff}.lp-final-grid{display:grid;grid-template-columns:1fr auto;gap:44px;align-items:center}.lp-final h2{margin:0 0 10px;font-size:clamp(30px,3.5vw,44px);line-height:1.2}.lp-final p{margin:0;color:#d9eff9;font-size:16px;line-height:1.75}.lp-final-actions{display:flex;gap:12px}
.lp-footer{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:26px max(24px,calc((100vw - 1160px)/2));background:#05273a;color:#9db8c8;font-size:12px}.lp-footer .lp-brand{color:#fff}.lp-footer .lp-brand img{width:36px;height:36px}.lp-footer .lp-brand strong{font-size:16px}.lp-footer .lp-brand small{color:#8db4ca}
.lp-mobile-actions{display:none}
.promo-page .xinda-service-tools,.promo-page .xinda-mobile-tools,.promo-page .xinda-mobile-back-top{display:none!important}
.promo-page.has-xinda-mobile-tools{padding-bottom:0}
@media(max-width:900px){
  .lp-hero-grid,.lp-section-head,.lp-offer-grid,.lp-solution-grid,.lp-proof-grid,.lp-tech-layout,.lp-faq{grid-template-columns:1fr}
  .lp-hero-grid{gap:34px;padding:50px 0}.lp-hero-media,.lp-hero-media img{min-height:360px;height:360px}.lp-section-head{gap:16px}.lp-scenarios{grid-template-columns:1fr}.lp-scenario{min-height:0}.lp-scenario>span{margin-bottom:24px}.lp-offer-grid{gap:34px}.lp-process{grid-template-columns:1fr 1fr}.lp-process article:nth-child(2){border-right:0}.lp-process article:nth-child(-n+2){border-bottom:1px solid rgba(255,255,255,.22)}.lp-tech-layout,.lp-faq{gap:28px}
}
@media(max-width:640px){
  body.promo-page{padding-bottom:64px}.lp-wrap{width:min(100% - 36px,1160px)}.lp-header{min-height:62px;padding:8px 18px}.lp-brand img{width:38px;height:38px}.lp-brand strong{font-size:17px}.lp-header-contact .lp-phone,.lp-header-contact .lp-header-cta{display:none}
  .lp-hero-grid{padding:34px 0 30px}.lp-breadcrumbs{margin-bottom:20px;font-size:12px}.lp-kicker{font-size:10px}.lp-hero h1{font-size:36px;letter-spacing:-.04em}.lp-lead{margin-top:18px;font-size:16px;line-height:1.75}.lp-offer-note{display:block;margin-top:20px}.lp-offer-note b{display:block;margin-bottom:6px}.lp-actions .lp-btn{width:100%}.lp-actions .lp-btn.secondary{display:none}.lp-hero-media,.lp-hero-media img{min-height:270px;height:270px}
  .lp-trust-grid{grid-template-columns:1fr 1fr}.lp-trust-grid>div{min-height:78px;padding:14px;border-bottom:1px solid var(--lp-line)}.lp-trust-grid .accent{grid-column:1/-1}.lp-trust-grid>div:nth-child(3){border-right:0}.lp-trust-grid strong{font-size:14px}
  .lp-section{padding:54px 0}.lp-section-head{margin-bottom:26px}.lp-section-head h2{font-size:31px}.lp-section-head p{font-size:15px}.lp-scenario{padding:22px}.lp-scenario h3{font-size:20px}.lp-offer-grid{padding:52px 0}.lp-offer h2{font-size:32px}.lp-offer-copy>p{font-size:15px}.lp-offer-list{grid-template-columns:1fr}.lp-offer-panel{padding:22px}.lp-deliverables{grid-template-columns:1fr}.lp-deliverable{min-height:0}.lp-process{grid-template-columns:1fr}.lp-process article{min-height:0;border-right:0;border-bottom:1px solid rgba(255,255,255,.22)}.lp-process article:last-child{border-bottom:0}.lp-process h3{margin-top:24px}.lp-proof-image,.lp-proof-image img{min-height:300px}.lp-proof-points{grid-template-columns:1fr}.lp-proof-points div{min-height:0}.lp-faq-list summary,.lp-tech-list summary{font-size:16px}.lp-final{padding:48px 0}.lp-final-grid{grid-template-columns:1fr;gap:24px}.lp-final-actions{display:block}.lp-final-actions .lp-btn{width:100%;margin-top:10px}.lp-footer{display:block;padding:28px 18px;text-align:center}.lp-footer .lp-brand{justify-content:center;margin-bottom:16px}.lp-footer>span{display:block;margin-top:8px}
  .lp-mobile-actions{position:fixed;right:0;bottom:0;left:0;z-index:70;display:grid;grid-template-columns:.72fr .72fr 1.45fr;padding:7px;background:#fff;border-top:1px solid var(--lp-line);box-shadow:0 -10px 30px rgba(5,43,64,.12)}.lp-mobile-actions a,.lp-mobile-actions button{display:flex;min-height:48px;align-items:center;justify-content:center;border:0;background:#fff;color:var(--lp-blue);font-size:13px;font-weight:900}.lp-mobile-actions a.primary{background:var(--lp-blue);color:#fff}
}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.lp-header-cta,.lp-btn,.lp-scenario{transition:none}}


/* Service landing pages use readable, compact copy and landscape subject images. */
.lp-credentials{display:grid;grid-template-columns:1fr 1fr;gap:16px;align-items:center;min-height:360px;padding:24px;background:#e7eff4}
.lp-credentials a{display:block;min-width:0}
.lp-credentials img{display:block;width:100%;height:300px;object-fit:contain;background:#fff;box-shadow:0 8px 24px rgba(5,43,64,.08)}
.lp-credentials figcaption{position:static;grid-column:1/-1;padding:0;background:none;color:var(--lp-muted);text-align:center;font-size:12px}
@media(max-width:640px){
 .lp-hero h1{font-size:34px}.lp-hero h1 em{font-size:25px}
 .lp-lead{font-size:15px}.lp-breadcrumbs{display:none}
 .lp-hero-media,.lp-hero-media img{height:235px;min-height:235px}
 .lp-hero-grid{gap:24px}.lp-kicker{margin-bottom:10px}
 .lp-offer-note{padding:12px 14px}.lp-offer-note b{display:none}
 .lp-section{padding:40px 0}.lp-section-head h2{font-size:27px}
 .lp-scenario{padding:18px}.lp-scenario>span{margin-bottom:12px}
 .lp-process{grid-template-columns:1fr 1fr}.lp-process article{padding:18px}
 .lp-process h3{font-size:17px;margin-top:18px}
 .lp-credentials{min-height:240px;padding:16px;gap:10px}
 .lp-credentials img{height:210px}
 .promo-page.has-xinda-mobile-tools{padding-bottom:64px}
}