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14px;margin-bottom:17px;border-radius:0}.inquiry input:focus,.inquiry textarea:focus{outline:2px solid rgba(0,41,100,.2);border-color:var(--navy)}.form-status{font-size:12px;color:var(--navy)}.site-footer{background:#081724;color:#c0ceda}.footer-grid{padding:70px 0 55px;display:grid;grid-template-columns:1.5fr repeat(4,1fr);gap:48px}.footer-logo{width:180px;background:#fff}.footer-grid>div:first-child p{max-width:300px;font-size:13px}.footer-grid h3{font-size:15px;color:#fff;margin:0 0 18px}.footer-grid a,.footer-grid span{display:block;font-size:13px;margin:8px 0}.footer-phone{font-size:21px!important;color:#fff;font-weight:800}.footer-bottom{border-top:1px solid rgba(255,255,255,.1);font-size:12px}.footer-bottom>.container{min-height:64px;display:flex;justify-content:space-between;align-items:center}.footer-bottom nav{display:flex;gap:18px;align-items:center}.footer-bottom details{position:relative}.footer-bottom summary{cursor:pointer}.footer-bottom details div{position:absolute;bottom:28px;left:0;min-width:160px;padding:12px;background:#fff;color:var(--ink);box-shadow:var(--shadow)}.mobile-call{display:none}
@media(max-width:1100px){.main-nav{gap:16px;font-size:13px}.nav-cta{display:none}.hero-grid{grid-template-columns:1fr 1fr;gap:34px}.hero h1{font-size:52px}.advantages .container{gap:50px}.footer-grid{grid-template-columns:1.4fr repeat(2,1fr)}.footer-grid>div:nth-child(4),.footer-grid>div:nth-child(5){margin-top:10px}}
@media(max-width:760px){.container{width:min(calc(100% - 32px),100%)}.utility-inner{height:30px}.utility-inner span{display:none}.utility-inner a{margin-left:auto}.site-header{position:sticky}.nav-shell{height:67px;gap:10px}.logo{width:132px;height:58px}.logo img{width:132px}.menu-button{display:flex;margin-left:auto;width:44px;height:44px;padding:9px;flex-direction:column;justify-content:center;gap:4px;border:0;background:transparent}.menu-button span{display:block;height:2px;background:var(--navy)}.menu-button b{position:absolute;width:1px;height:1px;overflow:hidden}.main-nav{display:none;position:absolute;top:97px;left:0;right:0;margin:0;padding:14px 16px 22px;background:#fff;box-shadow:0 16px 34px rgba(0,41,100,.14);grid-template-columns:1fr 1fr;gap:0 18px}.main-nav.is-open{display:grid}.main-nav a{padding:12px 6px;border-bottom:1px solid var(--line)}.main-nav a:after{display:none}.hero{padding-top:46px;background:linear-gradient(180deg,#fff 0%,#fff 63%,#f2f5f8 63%)}.hero-grid{display:block}.hero h1{font-size:41px;line-height:1.16;margin-bottom:28px}.hero-problem{font-size:17px;line-height:1.7}.hero-answer{font-size:14px}.hero-actions{align-items:stretch;flex-direction:column;gap:15px}.hero-actions .button{width:100%}.hero-actions .text-link{text-align:center;border:0}.microcopy{text-align:center}.hero-proof{margin-top:42px}.proof-window{height:355px}.window-top{height:38px}.system-core{width:156px;padding:16px}.system-core strong{font-size:13px}.system-node{width:125px;padding:10px}.system-node b{font-size:12px}.system-node span{font-size:9px}.n1,.n3{left:12px}.n2,.n4{right:12px}.n1,.n2{top:65px}.n3,.n4{bottom:23px}.proof-window svg{top:38px;height:calc(100% - 38px)}.hero-proof>p{font-size:12px}.fact-bar{grid-template-columns:1fr 1fr;margin-top:40px}.fact-bar div{padding:17px 13px;border-bottom:1px solid var(--line)}.section{padding:72px 0}.section-heading{margin-bottom:30px}.section-heading h2{font-size:31px}.section-heading>p:last-child{font-size:14px}.type-layout,.tech-grid,.service-layout,.case-layout,.advantages .container,.process-grid,.price-grid,.article-layout,.faq-grid,.inquiry-grid{grid-template-columns:1fr}.type-feature{min-height:340px;padding:28px}.type-list{grid-template-columns:1fr}.type-list a{min-height:120px}.context-action{align-items:stretch;flex-direction:column;gap:18px}.context-action .button{width:100%}.tech-band{padding:68px 0}.tech-grid{gap:34px}.tech-grid h2{font-size:30px}.tech-stack>div{grid-template-columns:1fr;gap:8px}.split-heading{display:block}.service-primary{padding:28px}.service-primary ul{grid-template-columns:1fr}.case-main{grid-template-columns:1fr}.case-evidence{min-height:350px}.case-main>div:last-child{padding:28px}.case-side{gap:0}.case-side article{border-left:0;border-top:1px solid var(--line);padding:25px}.advantage-intro{position:static}.advantage-intro h2{font-size:32px}.advantages .container{gap:38px}.deliverables{padding:24px 12px}.doc-cards{padding-inline:0}.doc-cards>div{height:190px;padding:14px 10px}.doc-cards b{font-size:12px}.price{background:var(--navy);padding:62px 0}.price-grid{gap:22px}.price h2{font-size:29px}.inline-heading{align-items:flex-start;flex-direction:column;gap:12px}.article-feature{min-height:330px;padding:28px}.article-feature h3{font-size:25px}.article-list a{grid-template-columns:55px 1fr 16px;gap:10px}.faq-grid{gap:30px}.inquiry{padding:72px 0}.inquiry h2{font-size:31px}.inquiry-grid{gap:35px}.contact-options{grid-template-columns:1fr}.inquiry form{padding:25px 20px}.footer-grid{grid-template-columns:1fr 1fr;gap:35px 22px;padding:55px 0}.footer-grid>div:first-child{grid-column:1/-1}.footer-bottom>.container{align-items:flex-start;flex-direction:column;padding-block:18px}.footer-bottom nav{flex-wrap:wrap;gap:8px 14px}.mobile-call{display:block;position:fixed;right:16px;bottom:16px;z-index:90;padding:12px 18px;border-radius:30px;background:var(--red);color:#fff;font-weight:800;box-shadow:0 8px 28px rgba(207,28,50,.35)}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}

/* V4.1 feedback refinements */
.button{border-radius:6px;box-shadow:none;letter-spacing:.01em}
.action-link{display:inline-flex;align-items:center;gap:18px;min-height:44px;padding:0 4px 7px;color:var(--navy);font-weight:800;border-bottom:2px solid var(--red);white-space:nowrap}
.action-link span{color:var(--red);transition:transform .2s}.action-link:hover span{transform:translateX(4px)}
.price{position:relative;padding:94px 0;background:#fff;color:var(--ink);border-top:1px solid var(--line);border-bottom:1px solid var(--line);overflow:hidden}
.price:before{content:"";position:absolute;left:0;top:0;bottom:0;width:9px;background:linear-gradient(var(--red),var(--orange))}
.price:after{content:"费用";position:absolute;right:2%;top:50%;transform:translateY(-54%);font-size:190px;font-weight:900;line-height:1;color:rgba(0,41,100,.035);pointer-events:none}
.price-grid{position:relative;z-index:1;grid-template-columns:1.05fr .95fr;gap:110px}
.price-label{display:inline-flex;margin:0 0 16px;padding:7px 13px;background:#f9e9ec;color:var(--red);font-size:14px;font-weight:800;letter-spacing:.1em}
.price h2{font-size:42px;line-height:1.35;color:var(--navy-950)}
.price-grid>div:last-child p{color:var(--muted);font-size:17px;margin:0 0 26px}
.price-link{display:inline-flex;align-items:center;gap:28px;min-height:52px;padding:0 22px;background:var(--navy);color:#fff;font-weight:800;border-radius:5px}
.price-link span{color:#ff9a78;font-size:20px}
.submit-button{display:flex;align-items:center;justify-content:space-between;width:100%;min-height:56px;padding:0 0 0 22px;border:0;border-radius:5px;background:var(--navy);color:#fff;font-weight:800;cursor:pointer;overflow:hidden;transition:.2s}
.submit-button b{display:grid;place-items:center;align-self:stretch;width:58px;background:var(--red);font-size:20px}.submit-button:hover{background:var(--navy-800)}
.wechat{min-height:216px}.wechat img{width:150px;height:190px;object-fit:contain;background:#fff;border:8px solid #fff}
.footer-logo-wrap{display:inline-flex;padding:8px 12px;background:#fff;border-radius:3px}.footer-logo{width:170px;background:#fff}
.mobile-actions{display:none}
@media(max-width:760px){
  body{padding-bottom:68px}
  .context-action{padding:24px 20px}.context-action .action-link{align-self:flex-start}
  .price{padding:66px 0}.price:before{width:5px}.price:after{font-size:110px;right:-20px}.price-grid{gap:24px}.price h2{font-size:31px}.price-grid>div:last-child p{font-size:15px}.price-link{width:100%;justify-content:space-between}
  .contact-options{gap:16px}.wechat{min-height:240px;align-items:center;justify-content:center;padding:20px}.wechat img{width:170px;height:205px;flex:0 0 auto}
  .submit-button{min-height:54px;margin-top:4px}
  .mobile-call{display:none!important}
  .mobile-actions{display:grid;position:fixed;left:0;right:0;bottom:0;z-index:120;grid-template-columns:repeat(3,1fr);height:64px;background:#fff;border-top:1px solid #d8dfe6;box-shadow:0 -8px 28px rgba(7,26,44,.12);padding-bottom:env(safe-area-inset-bottom)}
  .mobile-actions a{display:flex;align-items:center;justify-content:center;gap:7px;color:var(--navy);font-size:13px;font-weight:800;border-right:1px solid #e3e7eb}.mobile-actions a:last-child{border:0}.mobile-actions a:nth-child(2){background:var(--red);color:#fff}
  .mobile-actions i{font-style:normal;font-size:17px}.mobile-actions span{display:inline}
  .footer-logo-wrap{padding:7px 10px}.footer-logo{width:150px}
}
/* V4.2 mobile contact and footer logo */
.footer-grid .footer-logo-wrap{display:inline-flex;width:auto;max-width:190px}
#inquiry-form{scroll-margin-top:120px}
.mobile-actions button{font:inherit;border:0;background:#fff}
.wechat-dialog{width:min(92vw,380px);padding:28px 24px 24px;border:0;border-radius:10px;color:var(--ink);text-align:center;box-shadow:0 28px 80px rgba(7,26,44,.3)}
.wechat-dialog::backdrop{background:rgba(7,26,44,.72);backdrop-filter:blur(3px)}
.wechat-dialog p{margin:0;color:var(--red);font-size:13px;font-weight:800;letter-spacing:.12em}.wechat-dialog h2{margin:6px 0 18px;color:var(--navy-950);font-size:25px}.wechat-dialog img{display:block;width:min(260px,78vw);max-height:390px;object-fit:contain;margin:0 auto 14px;background:#fff;-webkit-touch-callout:default;user-select:auto}.wechat-dialog>span{display:block;color:var(--muted);font-size:12px}.dialog-close{position:absolute;right:10px;top:8px;width:38px;height:38px;border:0;background:transparent;color:#68737f;font-size:27px;cursor:pointer}
@media(max-width:760px){.mobile-actions a,.mobile-actions button{display:flex;align-items:center;justify-content:center;gap:7px;color:var(--navy);font-size:13px;font-weight:800;border-right:1px solid #e3e7eb}.mobile-actions a:nth-child(2){background:var(--red);color:#fff}.mobile-actions button{border-right:0}.mobile-actions button i{font-style:normal;font-size:17px}.footer-grid .footer-logo-wrap{max-width:172px}.footer-grid>div:first-child{align-items:flex-start}}