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22px}.section-heading h2{font-size:43px}.join{padding:70px 22px}.join-copy h2{font-size:52px}.join-form{display:grid;grid-template-columns:1fr}.join-form input{border-radius:7px;border-right:1px solid #1e405d}.join-form button{border-radius:7px;padding:15px;margin-top:8px}.footer-links{display:none}footer{grid-template-columns:1fr}.footer-meta{flex-direction:column;gap:6px}.vision-card{grid-template-columns:1fr}.vision-symbol{display:none}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;animation:none!important;transition:none!important}.reveal{opacity:1!important;transform:none!important}}

/* HD V5 layout refinements */
@media(min-width:1101px){.os-section{align-items:start}.os-copy{grid-column:1;grid-row:1/3;align-self:center}.os-cinematic{grid-column:2;grid-row:1}.dashboard-shell{grid-column:2;grid-row:2;margin-top:18px}.os-side-note{grid-column:3;grid-row:1/3;align-self:center}.hero-scene{background-repeat:no-repeat}.world-card:before{background-size:cover;background-position:center;image-rendering:auto}}
@media(max-width:1100px){.os-cinematic{grid-column:1;grid-row:auto;width:100%;max-width:980px}.hero-scene{background-image:image-set(url('assets/hd/hero-desktop.webp') 1x,url('assets/hd/hero-desktop@2x.webp') 2x)}}
@media(max-width:680px){.hero-scene{width:100%;right:0;height:54%;background-image:image-set(url('assets/hd/hero-mobile.webp') 1x,url('assets/hd/hero-mobile@2x.webp') 2x);background-position:center 58%;background-size:cover;transform:scale(1.005)!important}.os-cinematic figcaption{left:14px;right:14px;bottom:12px}.os-cinematic figcaption b{display:none}.os-cinematic figcaption span{font-size:7px}.world-card:before{background-size:cover}}

/* V6 cinematic motion layer: progressive enhancement, never obscures content */
.hero{isolation:isolate}.hero-scene{transform-origin:60% 45%;transition:transform .45s ease-out!important}.hero-beam{position:absolute;z-index:2;top:-10%;left:61%;height:96%;width:clamp(3px,.45vw,8px);background:linear-gradient(90deg,transparent,#0c83ff 25%,#f5fbff 52%,#0b74f6 75%,transparent);filter:blur(3px);opacity:.35;mix-blend-mode:screen;pointer-events:none;animation:beam-breathe 6s ease-in-out infinite}.starfield{position:absolute;inset:0;z-index:2;pointer-events:none;overflow:hidden;opacity:.8}.starfield i{position:absolute;width:2px;height:2px;border-radius:50%;background:#d6edff;box-shadow:0 0 8px #3ca7ff;animation:twinkle var(--dur) ease-in-out infinite;animation-delay:var(--delay)}.cinematic-fog{position:absolute;bottom:-12%;height:34%;width:85%;z-index:2;pointer-events:none;filter:blur(42px);opacity:.18;background:radial-gradient(ellipse,#b7dcff 0%,#347ab0 30%,transparent 70%);animation:fog-drift 18s ease-in-out infinite alternate}.fog-one{left:-15%}.fog-two{right:-30%;animation-delay:-9s;opacity:.13}.earth{transform:scale(1.08);transform-origin:center 80%;will-change:transform}.earth-halo{position:absolute;left:10%;right:10%;top:14%;height:12px;border-radius:50%;background:#a9dcff;filter:blur(28px);opacity:.23;pointer-events:none;animation:beam-breathe 9s infinite}.hero-content,.hero-manifesto{will-change:transform}.world-card{overflow:hidden}.world-card:before{transition:transform 1.2s cubic-bezier(.2,.8,.2,1),filter .8s!important}.world-card:hover:before{transform:scale(1.085);filter:saturate(1.2)}.dashboard-shell{box-shadow:0 24px 100px #0008,0 0 55px #0078ff12}.dashboard-shell:after{content:"";position:absolute;inset:0;pointer-events:none;border-radius:inherit;background:linear-gradient(115deg,transparent 30%,#80cbff0b 50%,transparent 65%);background-size:220% 100%;animation:glass-sweep 15s ease-in-out infinite}.os-cinematic img{transition:transform 1.2s ease}.os-cinematic:hover img{transform:scale(1.025)}.topbar{backdrop-filter:blur(8px)}
@keyframes beam-breathe{0%,100%{opacity:.18}50%{opacity:.57}}@keyframes twinkle{0%,100%{opacity:.12;transform:scale(.6)}50%{opacity:.9;transform:scale(1.6)}}@keyframes fog-drift{from{transform:translateX(-5%) scale(1)}to{transform:translateX(16%) scale(1.1)}}@keyframes glass-sweep{0%,30%{background-position:100% 0}65%,100%{background-position:-100% 0}}
@media(max-width:1100px){.hero-beam{left:50%;opacity:.25}.cinematic-fog{opacity:.09}.starfield{opacity:.35}}@media(max-width:680px){.hero-beam{height:53%;left:50%}.cinematic-fog{height:20%;bottom:44%}.hero-scene{transition:none!important}}@media(prefers-reduced-motion:reduce){.hero-beam,.cinematic-fog,.starfield i,.earth-halo,.dashboard-shell:after{animation:none!important}.hero-scene,.earth,.hero-content,.hero-manifesto{transform:none!important}}

/* V6 launch polish */
.scroll-progress{position:fixed;z-index:140;left:0;top:0;height:2px;width:0;background:linear-gradient(90deg,#0878ff,#a9e4ff);box-shadow:0 0 14px #0878ff;pointer-events:none;transform-origin:left center}.desktop-nav a.active{color:#fff;text-shadow:0 0 14px rgba(56,161,255,.35)}.world-card{--px:50%;--py:50%}.world-card:after{content:"";position:absolute;z-index:1;inset:0;pointer-events:none;background:radial-gradient(circle at var(--px) var(--py),rgba(85,175,255,.16),transparent 28%);opacity:0;transition:opacity .35s}.world-card:hover:after{opacity:1}@media(prefers-reduced-motion:reduce){.scroll-progress{transition:none!important}}

/* V6.1 pure-language system */
.sr-only{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}
[data-lang-only]{display:none!important}
html[lang="zh-CN"] [data-lang-only="zh"]{display:revert!important}
html[lang="zh-CN"] body{font-family:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
html[lang="zh-CN"] .eyebrow{letter-spacing:.18em}
html[lang="zh-CN"] .hero-manifesto{letter-spacing:.18em}
html[lang="zh-CN"] .tagline-line p,html[lang="zh-CN"] .world-card p,html[lang="zh-CN"] .belief-right p{letter-spacing:.05em}
html[lang="zh-CN"] .world-card h3{font-size:21px;letter-spacing:.05em}
html[lang="zh-CN"] .section-heading h2{letter-spacing:-.02em}
html[lang="zh-CN"] .os-copy h2{letter-spacing:.04em}
.lang-btn{min-width:44px;padding:8px 10px;border:1px solid rgba(115,171,223,.28);border-radius:6px;transition:.25s;background:rgba(4,17,31,.38)}
.lang-btn:hover{border-color:rgba(76,166,255,.68);background:rgba(8,78,145,.18);box-shadow:0 0 22px rgba(8,120,255,.12)}
/* The generated OS cinematic preview contained baked-in mixed-language text. The live HTML dashboard replaces it so both locales remain truly pure. */
.os-cinematic{display:none!important}
@media(min-width:1101px){.dashboard-shell{grid-column:2;grid-row:1/3;align-self:center}.os-copy{grid-column:1;grid-row:1/3}.os-side-note{grid-column:3;grid-row:1/3}}
@media(max-width:1100px){.desktop-nav{display:none}.lang-btn{display:inline-flex!important;align-items:center;justify-content:center}.dashboard-shell{grid-column:1;grid-row:auto}}
@media(max-width:680px){.nav-actions{gap:7px}.topbar .join-btn,.topbar .icon-btn{display:none}.lang-btn{font-size:10px;min-width:40px;padding:7px 9px}.menu-btn{display:block}.hero-cn[data-lang-only="zh"]{margin-top:18px;margin-bottom:18px}}