:root{--c-bg:#0a1622;--c-bg-soft:#0d1a28;--c-surface:#11202f;--c-surface-2:#16293a;--c-line:#ffffff14;--c-line-strong:#ffffff2e;--c-fg:#ede8df;--c-fg-mute:#9aa6b4;--c-fg-dim:#5e6b7a;--c-accent:#e0c089;--c-accent-2:#c9a574;--c-accent-glow:#c9a57433;--font-display:"Source Serif 4", Georgia, "Songti SC", "STSong", serif;--font-body:"Inter", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif}:root html[lang=zh-CN] .hero__title,:root html[lang=zh-CN] .contact__title,:root html[lang=zh-CN] .section__title{letter-spacing:0;font-weight:400}:root html[lang=zh-CN] .logo__tagline{letter-spacing:.18em;text-transform:none}:root{--space-section:clamp(6rem, 12vh, 11rem);--container:1240px;--gutter:clamp(1.25rem, 4vw, 3rem);--ease-out:cubic-bezier(.16, 1, .3, 1);--ease-in-out:cubic-bezier(.65, 0, .35, 1);--dur-fast:.18s;--dur:.4s;--dur-slow:.9s;--lightningcss-light: 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var(--ease-out);padding:.15rem .1rem}.lang__opt:hover{color:var(--c-fg-mute)}.lang__opt.is-active{color:var(--c-fg)}.lang__sep{background:var(--c-line-strong);width:1px;height:11px}.nav{z-index:50;transition:background-color var(--dur) var(--ease-out), border-color var(--dur) var(--ease-out), backdrop-filter var(--dur);border-bottom:1px solid #0000;position:fixed;top:0;left:0;right:0}.nav.is-scrolled{-webkit-backdrop-filter:saturate(140%)blur(14px);border-bottom-color:var(--c-line);background:#0a1622b8}.nav__inner{justify-content:space-between;align-items:center;height:84px;display:flex}.nav__links{gap:2.2rem;display:flex}.nav__link{color:var(--c-fg-mute);letter-spacing:.01em;transition:color var(--dur-fast) var(--ease-out);padding:.3rem 0;font-size:.88rem;position:relative}.nav__link:after{content:"";background:var(--c-fg);transform-origin:0;width:100%;height:1px;transition:transform var(--dur) 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1.8rem;font-size:clamp(2.6rem,7vw,5.5rem);font-weight:300;line-height:.98}.contact__lede{color:var(--c-fg-mute);max-width:48ch;margin-bottom:2.6rem;font-size:clamp(1.05rem,1.6vw,1.25rem)}.contact__email{border-top:1px solid var(--c-line);max-width:520px;padding-top:2.2rem}.contact__meta-label{letter-spacing:.22em;text-transform:uppercase;color:var(--c-fg-dim);margin-bottom:.7rem;font-size:.72rem;display:block}.contact__email a{font-family:var(--font-display);letter-spacing:-.01em;color:var(--c-fg);border-bottom:1px solid var(--c-line-strong);transition:border-color var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out);padding-bottom:.2rem;font-size:clamp(1.4rem,3vw,2rem);display:inline-block}.contact__email a:hover{color:var(--c-accent-2);border-bottom-color:var(--c-accent-2)}.footer{border-top:1px solid var(--c-line);padding-block:2.4rem}.footer__inner{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:1.4rem;display:flex}.footer__nav{gap:1.8rem;display:flex}.footer__nav a{color:var(--c-fg-mute);transition:color var(--dur-fast) var(--ease-out);font-size:.85rem}.footer__nav a:hover{color:var(--c-fg)}.footer__copy{color:var(--c-fg-dim);letter-spacing:.02em;font-size:.8rem}.footer__beian{text-align:center;margin-top:1.4rem}.footer__icp{color:var(--c-fg-dim);letter-spacing:.02em;transition:color var(--dur-fast) var(--ease-out);font-size:.8rem}.footer__icp:hover{color:var(--c-fg-mute)}@media (width<=900px){.nav__links{display:none}.nav__burger{display:flex}.nav__actions .btn--primary{display:none}.section__title{white-space:normal}.nav__sheet{-webkit-backdrop-filter:blur(14px);max-height:0;transition:max-height var(--dur) var(--ease-out), padding var(--dur) var(--ease-out), border-color var(--dur) var(--ease-out);background:#0a1622f5;border-bottom:1px solid #0000;flex-direction:column;gap:.4rem;padding:0 1.25rem;display:flex;overflow:hidden}.nav__sheet.is-open{border-bottom-color:var(--c-line);max-height:360px;padding:1rem 1.25rem 1.6rem}.nav__sheet-link{border-bottom:1px solid var(--c-line);color:var(--c-fg);padding:.85rem 0;font-size:1rem}.nav__sheet .btn{justify-content:center;margin-top:1rem}.approach__grid{grid-template-columns:repeat(3,1fr)}.impact__grid{background-image:linear-gradient(to right, transparent calc(50% - .5px), var(--impact-line) calc(50% - .5px), var(--impact-line) calc(50% + .5px), transparent calc(50% + .5px));grid-template-columns:repeat(2,1fr)}.capability{grid-template-columns:auto 1fr;gap:1.5rem}.capability__arrow{display:none}}@media (width<=560px){.approach__grid,.impact__grid{grid-template-columns:1fr}.impact__grid>.impact__cell{border-bottom:1px solid #ffffff24;border-right:none}.impact__grid>.impact__cell:last-child{border-bottom:none}.contact__fields{grid-template-columns:1fr}.footer__inner{flex-direction:column;align-items:flex-start}}