@charset "UTF-8";

:root{color-scheme:dark;--background:#050608;--surface:#0b0e13;--text:#f1f3f5;--muted:#8b919e;--line:rgba(194,212,237,.15);--blue:#a2c6f5;--ease-out:cubic-bezier(.23,1,.32,1);--ease-in-out:cubic-bezier(.77,0,.175,1);font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;font-synthesis:none}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:130px}
body{margin:0;background:var(--background);color:var(--text);-webkit-font-smoothing:antialiased}
body.dialog-open{overflow:hidden}
button,a{-webkit-tap-highlight-color:transparent}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;border:0;cursor:pointer;background:none}
button:active,.text-link:active,.contact-arrow:active{transform:scale(.97)}
button,.text-link,.contact-arrow{transition:transform 140ms var(--ease-out)}
button:focus-visible,a:focus-visible,[tabindex]:focus-visible{outline:2px solid var(--blue);outline-offset:6px}
img{display:block;max-width:100%}
::selection{background:#b4d3fc;color:#080b10}
[hidden]{display:none!important}
.skip-link{position:fixed;left:20px;top:-80px;padding:12px 20px;background:white;color:black;z-index:100}
.skip-link:focus{top:12px}
.eyebrow{font-size:11px;letter-spacing:.22em;text-transform:uppercase;color:#a1aebf;line-height:1.7}
.live-dot{width:4px;height:4px;background:#a6cfff;border-radius:50%;box-shadow:0 0 12px #6ca7ff}
.text-link{display:inline-flex;align-items:center;gap:30px;padding:10px 0;border-bottom:1px solid #5d6674;font-size:13px;letter-spacing:.04em;line-height:1.6}
.text-link>span:last-child{font-size:20px;line-height:1;transition:transform 220ms var(--ease-out)}
@keyframes scroll-hint{70%,100%{transform:translateX(100%)}}
.section-shell{padding:86px 8.4% 110px}
.section-kicker{display:flex;justify-content:space-between;gap:20px;align-items:center;font-size:10px;letter-spacing:.15em;color:#7c8797;line-height:1.7}
.section-kicker>span:last-child{font-size:11px;color:#9aa4b3;letter-spacing:.12em}
.about{position:relative;padding-bottom:0;background:#080a0d}
.about-layout{display:grid;grid-template-columns:1.2fr 1fr;gap:9%;padding:94px 0 78px}
h2{font-size:clamp(30px,3.2vw,49px);font-weight:400;line-height:1.42;letter-spacing:.04em}
h2>span{display:block}
.muted{color:#626c7d}
.about-heading h2{margin-bottom:68px}
.about-coordinate{display:flex;align-items:center;gap:16px;color:#5d6b7f;font-family:monospace;font-size:9px;line-height:1.9;letter-spacing:.06em}
.crosshair{font-size:34px;font-weight:200;color:#8091a8}
.about-copy{padding-top:7px}
.about-copy p{font-size:14px;line-height:2.2;letter-spacing:.03em;color:#8994a5;margin-bottom:27px}
.about-copy .lead{font-size:22px;color:#d6dce6;line-height:1.8;margin-bottom:22px;font-weight:300}
.about-copy .text-link{margin-top:8px}
.statement-line{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:28px 0;border-top:1px solid var(--line);font-size:11px;letter-spacing:.24em;color:#8993a2}
.statement-line i{font-size:20px;font-style:normal;color:#435064}
.ecosystem{background:#080a0d;border-bottom:1px solid var(--line)}
.section-heading{padding:56px 0 48px}
.section-heading h2{margin-bottom:20px}
.section-heading p{color:#7f8b9e;font-size:14px;line-height:1.9;letter-spacing:.04em;max-width:650px}
.ecosystem-stage{display:grid;grid-template-columns:.85fr 2fr;gap:6%;align-items:stretch;border-top:1px solid var(--line);padding-top:20px}
.ecosystem-tabs{padding-top:30px}
.ecosystem-tab{display:flex;align-items:center;width:100%;text-align:left;border-bottom:1px solid var(--line);min-height:110px;padding:24px 12px 24px 0;color:#6a7688;gap:20px;position:relative;transition:color 180ms ease,transform 140ms var(--ease-out)}
.ecosystem-tab::after{content:"";position:absolute;bottom:-1px;left:0;width:100%;height:1px;background:#a8c8f1;transform:scaleX(0);transform-origin:left;transition:transform 240ms var(--ease-out)}
.ecosystem-tab[aria-selected=true]{color:#e6eefb}
.ecosystem-tab[aria-selected=true]::after{transform:scaleX(1)}
.tab-number{font-family:monospace;font-size:10px;align-self:flex-start;margin-top:5px}
.ecosystem-tab strong{font-size:19px;font-weight:400;letter-spacing:.08em;display:block;margin-bottom:10px}
.ecosystem-tab small{font-size:8px;letter-spacing:.14em}
.tab-arrow{font-size:23px;margin-left:auto;opacity:0;transform:translate(-4px,4px);transition:transform 220ms var(--ease-out),opacity 220ms ease}
.ecosystem-tab[aria-selected=true] .tab-arrow{opacity:1;transform:none}
.business-panel{position:relative;min-width:0;overflow:hidden;padding:0 28px 32px 36px;background:radial-gradient(ellipse at 50% 23%,#101b2a 0%,#0c1119 35%,#0a0e14 70%)}
.system-art{height:310px;position:relative;overflow:hidden;perspective:700px;isolation:isolate}
.system-grid{position:absolute;inset:10% 0;opacity:.18;background-image:linear-gradient(#314563 1px,transparent 1px),linear-gradient(90deg,#314563 1px,transparent 1px);background-size:36px 36px;transform:rotateX(60deg) rotateZ(-27deg) scale(1.2);mask-image:radial-gradient(ellipse,black,transparent 70%)}
.orbital{position:absolute;left:50%;top:50%;width:280px;height:280px;border:1px solid rgba(137,186,246,.35);border-radius:50%;transform:translate(-50%,-50%) rotateX(64deg) rotateZ(-28deg);box-shadow:0 0 30px rgba(76,143,243,.04),inset 0 0 22px rgba(84,135,239,.04);transition:transform 700ms var(--ease-out),border-color 400ms ease}
.orbital-two{width:220px;height:220px;transform:translate(-50%,-50%) rotateX(50deg) rotateY(32deg) rotateZ(20deg);border-color:rgba(137,186,246,.6)}
.orbital-three{width:330px;height:330px;transform:translate(-50%,-50%) rotateX(60deg) rotateY(-20deg) rotateZ(65deg);border-color:rgba(137,186,246,.19)}
.system-core{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);height:93px;width:93px;display:flex;flex-direction:column;gap:9px;align-items:center;justify-content:center;border:1px solid #5c7ca8;border-radius:50%;background:radial-gradient(circle at 30% 20%,#1c2d45,#0d1421 70%);box-shadow:0 0 65px #6091de20,inset 0 0 25px #9bc6ff0c}
.system-core>span{font-size:23px;letter-spacing:.16em;font-weight:300;margin-left:3px;color:#d2e2f8}
.system-core small{font-size:7px;letter-spacing:.19em;color:#8aa5c9}
.system-satellite{position:absolute;width:5px;height:5px;border-radius:50%;background:#bdd9ff;box-shadow:0 0 12px #779edc}
.satellite-one{top:41%;left:26%;animation:satellite-pulse 4s ease-in-out infinite}
.satellite-two{top:64%;right:26%;width:3px;height:3px;animation:satellite-pulse 4s ease-in-out 2s infinite}
@keyframes satellite-pulse{50%{opacity:.3;transform:scale(.8)}}
.art-caption{position:absolute;bottom:16px;left:0;font-size:8px;letter-spacing:.16em;color:#50647f}
.art-cross{position:absolute;top:16px;right:0;color:#3d4b60;font-size:21px;font-weight:200}
.business-panel[data-state=models] .orbital-one{transform:translate(-50%,-50%) rotateX(30deg) rotateY(65deg) rotateZ(40deg)}
.business-panel[data-state=models] .orbital-two{transform:translate(-50%,-50%) rotateX(-20deg) rotateY(55deg) rotateZ(-20deg)}
.business-panel[data-state=assistant] .orbital-one{transform:translate(-50%,-50%) rotateX(25deg) rotateY(-15deg) rotateZ(70deg)}
.business-panel[data-state=assistant] .orbital-two{transform:translate(-50%,-50%) rotateX(50deg) rotateY(-45deg) rotateZ(0deg)}
.business-panel[data-state=data] .orbital-one{transform:translate(-50%,-50%) rotateX(70deg) rotateY(0deg) rotateZ(0deg)}
.business-panel[data-state=data] .orbital-two{transform:translate(-50%,-50%) rotateX(70deg) rotateY(0deg) rotateZ(0deg)}
.panel-copy{padding-top:20px;border-top:1px solid var(--line)}
.panel-eyebrow{font-size:8px;letter-spacing:.18em;color:#7d96b6;margin-bottom:18px}
.panel-copy h3{font-weight:400;font-size:24px;letter-spacing:.02em;line-height:1.5;margin-bottom:18px}
.panel-copy>p:not(.panel-eyebrow){font-size:13px;line-height:2;color:#8390a3;max-width:530px;min-height:78px;margin-bottom:13px}
.panel-copy .text-link{font-size:12px}
.vision{padding-top:85px;padding-bottom:115px;background:#050608;position:relative}
.vision-intro{padding:80px 0 70px}
.vision-intro .eyebrow{font-size:9px;color:#728096;margin-bottom:24px;letter-spacing:.18em}
.vision-intro h2{margin:0;font-size:clamp(32px,3.5vw,54px);line-height:1.5}
.principles{display:grid;grid-template-columns:repeat(3,1fr);gap:40px}
.principle{border-top:1px solid var(--line);padding-top:22px}
.principle-index{display:block;font-family:monospace;font-size:11px;color:#5e6e83;margin-bottom:44px}
.principle h3{font-size:22px;font-weight:400;letter-spacing:.05em;margin-bottom:21px}
.principle p{font-size:13px;line-height:2.1;color:#7e899b;margin-bottom:38px;max-width:300px}
.principle-word{font-size:9px;letter-spacing:.22em;color:#536175}
.contact{border-top:1px solid var(--line);position:relative;isolation:isolate;overflow:hidden;background:#0a0e14;padding-bottom:75px}
.contact-orbit{position:absolute;width:900px;height:900px;border-radius:50%;border:1px solid #789ccd13;right:-280px;top:-500px;z-index:-1;box-shadow:0 0 0 75px #789ccd04,0 0 0 150px #789ccd03}
.contact-heading{display:flex;justify-content:space-between;gap:40px;align-items:center;padding:78px 0 70px}
.contact-heading .eyebrow{font-size:11px;color:#7f8ea3;letter-spacing:.08em;margin-bottom:23px}
.contact-heading h2{font-size:clamp(34px,4.6vw,68px);margin:0;font-weight:400;letter-spacing:.02em}
.contact-arrow{height:95px;width:95px;border-radius:50%;border:1px solid #3c4b60;display:flex;justify-content:center;align-items:center;font-size:45px;font-weight:200;flex-shrink:0;color:#c4d6ef}
.contact-details{display:grid;grid-template-columns:1.1fr 1.45fr 1fr .7fr;gap:30px;border-top:1px solid var(--line);padding-top:35px}
.detail-label{font-size:10px;color:#6f8098;letter-spacing:.1em;margin-bottom:20px;display:block}
.contact-details p,.phone-link,.wechat-button{font-size:12px;line-height:1.9;color:#b6c0cf;margin:0}
.phone-link{white-space:nowrap;font-family:Arial,sans-serif;font-size:12px}
.wechat-button{padding:0;display:flex;gap:16px;align-items:center;text-align:left;min-height:23px}
.site-footer{padding:44px 4.2% 24px;background:#050608}
.footer-top{display:flex;align-items:center;justify-content:space-between;gap:24px;padding-bottom:40px}
.footer-brand{opacity:.72}
.footer-brand img{width:145px;height:44px}
.footer-tagline{font-size:9px;letter-spacing:.19em;color:#5d697c}
.back-to-top{font-size:10px;color:#8591a3;display:flex;align-items:center;gap:24px;min-height:44px}
.back-to-top>span:last-child{font-size:19px}
.footer-bottom{display:flex;justify-content:space-between;gap:20px;padding-top:23px;border-top:1px solid var(--line);font-size:9px;letter-spacing:.02em;color:#687385;line-height:1.8}
.registrations{display:flex;gap:24px;align-items:center}
.registrations a{display:flex;align-items:center;gap:5px}
.registrations img{opacity:.8}
.menu-dialog{padding:0;margin:0;width:100%;height:100%;max-width:none;max-height:none;background:#090c12;border:0;color:var(--text)}
dialog::backdrop{background:rgba(0,0,0,.75);backdrop-filter:blur(8px)}
.menu-dialog-inner{padding:26px 8.4% 35px;height:100%;display:flex;flex-direction:column}
.menu-top{display:flex;justify-content:space-between;align-items:center;font-size:10px;letter-spacing:.2em;color:#7a8ba2}
.dialog-close{width:48px;height:48px;font-size:35px;font-weight:200;line-height:1;color:#b5c2d3}
.menu-links{flex:1;display:flex;flex-direction:column;justify-content:center;max-width:1000px;width:100%;margin:auto}
.menu-links a{display:flex;align-items:center;gap:45px;padding:17px 0;border-bottom:1px solid var(--line)}
.menu-links small{font-size:10px;color:#64748a;font-family:monospace}
.menu-links a>span{font-size:clamp(30px,4vw,52px);font-weight:300;letter-spacing:.04em}
.menu-links i{font-style:normal;font-size:36px;font-weight:200;margin-left:auto;color:#7187a4}
.menu-footer{display:flex;justify-content:space-between;gap:20px;font-size:9px;letter-spacing:.14em;color:#748198;padding-top:20px}
.wechat-dialog{background:#10151e;border:1px solid #2a3544;color:var(--text);text-align:center;padding:48px 40px 32px;max-width:calc(100vw - 32px);width:390px;border-radius:2px}
.wechat-dialog .dialog-close{position:absolute;right:8px;top:8px;font-size:28px}
.wechat-dialog .eyebrow{font-size:9px}
.wechat-dialog h2{font-size:25px;margin-bottom:25px}
.wechat-dialog img{margin:0 auto 22px;width:240px;height:240px;object-fit:contain;background:white}
.wechat-dialog>p:last-child{font-size:12px;line-height:1.8;color:#8f9bad;margin:0}
.js-enabled .reveal{opacity:0;transform:translateY(24px);transition:opacity 650ms var(--ease-out),transform 650ms var(--ease-out);transition-delay:var(--reveal-delay,0ms)}
.js-enabled .reveal.is-visible{opacity:1;transform:none}
@keyframes hero-enter{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}
.motion-paused .scroll-line::after,.motion-paused .system-satellite{animation-play-state:paused}
html.keyboard-input{scroll-behavior:auto!important}
.keyboard-input *,.keyboard-input *::before,.keyboard-input *::after{scroll-behavior:auto!important;transition-duration:0ms!important;transition-delay:0ms!important;animation-duration:0ms!important;animation-delay:0ms!important}
.about-coordinate,.principle-word,.footer-tagline,.footer-bottom,.ecosystem-tab,.hero-topline{color:#8591a3}
.noscript-note{padding:12px 4%;font-size:12px;background:#18202c;color:#d2def0}
@media(hover:hover) and (pointer:fine){
  .text-link:hover>span:last-child{transform:translate(3px,-3px)}
  .ecosystem-tab:hover{color:#cbd7e8}.contact-arrow:hover{background:#acccf410;border-color:#87a7d2}
  .menu-links a:hover>span{color:#b5d2fa}.menu-links a:hover i{color:#d7e7ff}
  .wechat-button:hover,.registrations a:hover,.phone-link:hover{color:white}
}
@media(min-width:1600px){.section-shell{padding-left:max(8.4%,calc((100% - 1340px)/2));padding-right:max(8.4%,calc((100% - 1340px)/2))}}
@media(max-width:1100px){
  .section-shell{padding-left:6%;padding-right:6%}.about-layout{gap:7%;grid-template-columns:1fr 1fr}.about-copy .lead{font-size:19px}
  .ecosystem-stage{grid-template-columns:1fr 1.8fr;gap:4%}.business-panel{padding-left:24px;padding-right:24px}.ecosystem-tab{gap:13px}.ecosystem-tab strong{font-size:17px}
  .contact-details{grid-template-columns:1fr 1.4fr;row-gap:30px}.footer-bottom{flex-direction:column;gap:13px}
}
@media(max-width:760px){
  html{scroll-padding-top:90px}
  .section-shell{padding:56px 6% 65px}.section-kicker{font-size:8px;letter-spacing:.12em}.section-kicker>span:last-child{font-size:9px;letter-spacing:.07em}
  .about{padding-bottom:0}.about-layout{grid-template-columns:1fr;gap:33px;padding:52px 0 45px}h2{font-size:31px;line-height:1.5;letter-spacing:.02em}.about-heading h2{margin-bottom:0}.about-coordinate{display:none}.about-copy{padding:0}.about-copy .lead{font-size:18px;line-height:1.8;margin-bottom:19px}.about-copy p{font-size:13px;line-height:2;max-width:550px}.text-link{font-size:12px}.statement-line{gap:9px;padding:24px 0;font-size:7px;letter-spacing:.09em}.statement-line i{font-size:14px}
  .section-heading{padding:43px 0 30px}.section-heading h2{font-size:29px;margin-bottom:17px}.section-heading p{font-size:12px;line-height:1.9;max-width:290px}
  .ecosystem-stage{grid-template-columns:1fr;gap:22px;padding-top:0}.ecosystem-tabs{padding-top:0;display:grid;grid-template-columns:repeat(4,1fr);gap:13px}
  .ecosystem-tab{padding:21px 0 18px;min-height:100px;gap:9px;display:block}.tab-number{display:block;font-size:8px;margin:0 0 12px}.ecosystem-tab strong{font-size:12px;letter-spacing:0;margin:0;white-space:nowrap}.ecosystem-tab small{display:none}.tab-arrow{display:none}.business-panel{padding:0 22px 28px}.system-art{height:270px}.orbital{width:240px;height:240px}.orbital-two{width:200px;height:200px}.orbital-three{width:285px;height:285px}.panel-copy h3{font-size:22px;line-height:1.5}.panel-copy>p:not(.panel-eyebrow){font-size:12px;line-height:2;min-height:96px}.panel-eyebrow{font-size:7px;line-height:1.6}
  .vision-intro{padding:50px 0 40px}.vision-intro .eyebrow{font-size:8px;letter-spacing:.12em}.vision-intro h2{font-size:28px;line-height:1.6}.principles{grid-template-columns:1fr;gap:29px}.principle{display:grid;grid-template-columns:38px 1fr;column-gap:13px;padding-top:25px}.principle-index{grid-column:1;margin-bottom:0;margin-top:7px;font-size:9px}.principle h3{grid-column:2;font-size:20px;margin-bottom:15px}.principle p{grid-column:2;font-size:12px;margin-bottom:21px;max-width:none}.principle-word{grid-column:2;font-size:8px}
  .contact-heading{padding:50px 0 42px;gap:12px}.contact-heading h2{font-size:31px}.contact-heading .eyebrow{font-size:9px;letter-spacing:.03em;line-height:1.8;margin-bottom:17px}.contact-arrow{height:55px;width:55px;font-size:28px}.contact-details{grid-template-columns:1fr;gap:25px;padding-top:29px}.detail-label{font-size:9px;margin-bottom:9px}.contact-details p,.phone-link,.wechat-button{font-size:12px}.wechat-button{min-height:36px}.contact-orbit{right:-650px;top:-400px}
  .site-footer{padding:32px 6% 25px}.footer-top{flex-wrap:wrap;gap:20px;padding-bottom:25px}.footer-brand img{width:125px;height:38px}.footer-tagline{display:none}.back-to-top{gap:15px;font-size:9px}.footer-bottom{font-size:8px;line-height:1.8;gap:13px}.registrations{flex-wrap:wrap;gap:9px}.registrations img{width:12px;height:12px}
  .menu-dialog-inner{padding:20px 6% 30px}.menu-top{font-size:8px;letter-spacing:.08em}.menu-links a{padding:20px 0;gap:24px}.menu-links a>span{font-size:29px}.menu-links i{font-size:25px}.menu-footer{flex-direction:column;font-size:8px;line-height:1.8}html[lang=en] .ecosystem-tab strong{font-size:10px}html[lang=en] .contact-heading h2{font-size:29px}html[lang=en] .contact-arrow{height:45px;width:45px}
}
@media(max-width:359px){.ecosystem-tabs{gap:9px}.ecosystem-tab strong{font-size:11px}.statement-line{font-size:6px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;transition-delay:0ms!important}.js-enabled .reveal{opacity:1;transform:none}}

/* Reference alignment: Tencent header and High-Flyer hero proportions. */
:root{--header-height:106px;--background:#000;--text:#f5f5f7;--muted:#86868b;--reference-heading-size:48px;--reference-body-leading:25px;font-family:-apple-system,"Noto Sans","Helvetica Neue",Helvetica,"Nimbus Sans L",Arial,"Liberation Sans","PingFang SC","Hiragino Sans GB","Noto Sans CJK SC","Source Han Sans SC","Source Han Sans CN","Microsoft YaHei","Wenquanyi Micro Hei","WenQuanYi Zen Hei","ST Heiti",SimHei,"WenQuanYi Zen Hei Sharp",sans-serif}
.site-header,.site-header.is-scrolled{position:fixed;inset:0 0 auto;height:var(--header-height);padding:0 44px;display:flex;align-items:center;gap:0;z-index:30;background:#000;color:#f5f5f7;border-bottom:1px solid #ffffff12;backdrop-filter:none}
.brand{display:block;flex-shrink:0}
.site-header .brand img{width:200px;height:52px;object-fit:contain}
.desktop-nav{display:flex;align-items:center;margin:0 0 0 auto;gap:0}
.desktop-nav a{display:block;position:relative;padding:5px 18px;color:#d2d2d7;font-size:18px;line-height:28px;font-weight:500;letter-spacing:0;white-space:nowrap;transition:color 180ms ease}
.desktop-nav a::after{display:none}
.desktop-nav a.is-current{color:#fff}
.header-actions{display:flex;align-items:center;gap:20px;margin-left:32px}
.language-options{display:flex;align-items:center;gap:14px}
.language-button{min-width:16px;height:44px;padding:0;position:relative;color:#86868b;font-size:17px;line-height:24px;font-weight:400}
.language-button[aria-pressed=true]{color:#fff;font-weight:600}
.language-button[aria-pressed=true]::after{content:"";position:absolute;left:0;right:0;bottom:6px;height:1px;background:#fff}
.menu-toggle{display:none;width:44px;height:44px;align-items:center;justify-content:center;flex-direction:column;gap:6px}
.menu-toggle span{height:2px;width:23px;background:#f5f5f7;transition:transform 220ms var(--ease-out)}
.menu-toggle span:last-child{width:23px;margin:0}
.hero{isolation:isolate;position:relative;height:calc(100svh - var(--header-height));min-height:600px;max-height:1600px;margin-top:var(--header-height);padding:0;overflow:hidden;border:0;background:#000}
#particle-field,.hero-atmosphere,.hero-shade{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;z-index:-2}
.hero-atmosphere{background:#000}
.hero-shade{z-index:-1;background:linear-gradient(180deg,transparent 70%,#000 100%)}
.hero-copy{position:absolute;left:50%;top:25%;width:100%;margin:0;padding:0 24px;transform:translate(-50%,-50%);text-align:center;animation:none}
h1{font-size:48px;line-height:60px;font-weight:600;letter-spacing:.02em;color:#fff;margin:0;text-shadow:0 2px 20px rgba(0,0,0,.5)}
h1>span{display:block}
.hero-brand{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:200px;display:block}
.hero-brand img{width:200px;height:auto}
.hero-business{position:absolute;left:50%;top:75%;bottom:auto;right:auto;transform:translate(-50%,-50%);display:flex;align-items:flex-start;justify-content:center;gap:100px;width:calc(100% - 120px);max-width:1145px;animation:none}
.hero-business>a,.hero-business>a:first-child{position:relative;display:flex;flex-direction:column;align-items:center;min-width:0;width:315px;text-align:center;padding:0;border:0;background:none}
.hero-business>a+a::before{content:"";position:absolute;top:30px;bottom:10px;left:-50px;width:1px;background:#b9bdc7}
.business-name{font-size:28px;font-weight:600;line-height:34px;color:#e0e1e6;letter-spacing:.03em;display:block;margin-bottom:15px;min-height:48px}
.business-name::after{display:block;font-family:Arial,sans-serif;font-size:12px;font-weight:500;letter-spacing:.1em;line-height:18px;color:#f5f5f7;text-shadow:0 1px 6px #000,0 0 12px #000}
.hero-business>a:nth-child(1) .business-name::after{content:"EHO CLOUD"}
.hero-business>a:nth-child(2) .business-name::after{content:"EHO AI"}
.hero-business>a:nth-child(3) .business-name::after{content:"EHO DATA"}
.business-caption{font-size:18px;font-weight:400;line-height:28px;letter-spacing:.1em;color:#d2d2d7;max-width:315px}
.hero-bottom{position:absolute;right:28px;bottom:10px;display:flex}
.motion-toggle{display:flex;align-items:center;gap:8px;min-height:44px;font-size:10px;color:#a7adb8}
.motion-symbol{font-size:12px;min-width:14px}
.about,.ecosystem,.vision,.model,.platform{background:#000}
.section-shell h2{font-size:var(--reference-heading-size);line-height:1;letter-spacing:.02em;font-weight:600}
.about-copy p,.about-copy .lead,.section-heading p{font-size:15px;line-height:22px;font-weight:400;letter-spacing:.03em;color:#a3a5af}
.panel-copy>p:not(.panel-eyebrow),.principle p{font-size:15px;line-height:var(--reference-body-leading);font-weight:400;letter-spacing:.03em}
html[lang] .contact-heading h2{font-size:22px;line-height:normal}
.contact-details p,.phone-link,.wechat-button,.detail-label{font-size:13px;line-height:1.7;font-weight:400;letter-spacing:.1em}
.footer-bottom{font-size:12px;line-height:26px}
.model{padding-bottom:0;border-top:1px solid var(--line)}
.platform{padding-top:90px}
.platform .statement-line{gap:35px}
.platform .statement-line .text-link{font-size:13px;letter-spacing:.03em}
.contact{background:#09093f}
.site-footer{background:#09093f}
.menu-dialog{background:#000;color:#f5f5f7}
.menu-top,.menu-footer{color:#86868b}
.menu-links a{border-color:#ffffff26}
.menu-links small{color:#86868b}
.menu-links i{color:#d2d2d7}
.menu-dialog .dialog-close{color:#fff}
@media(hover:hover) and (pointer:fine){.desktop-nav a:hover{color:#fff}.hero-business>a:hover{background:none}.hero-business>a:hover .business-name{color:#fff}.menu-links a:hover>span{color:#fff}.menu-links a:hover i{color:#fff}.menu-toggle:hover span:last-child{transform:none}}
@media(min-width:1280px) and (max-width:1399px){.desktop-nav a{font-size:17px;padding-inline:16px}}
@media(max-width:1279px){
 :root{--header-height:80px}
 .site-header,.site-header.is-scrolled{padding:0 32px}
 .site-header .brand img{width:180px;height:46px}
 .desktop-nav{display:none}
 .header-actions{margin-left:auto;gap:25px}
 .menu-toggle{display:flex}
 .hero-business{gap:70px;width:calc(100% - 80px)}
 .hero-business>a+a::before{left:-35px}
 .business-name{font-size:25px}
 .business-caption{font-size:18px;line-height:28px}
}
@media(max-width:1440px){:root{--reference-heading-size:44px}}
@media(max-width:1280px){:root{--reference-heading-size:40px}}
@media(max-width:1024px){
 :root{--reference-heading-size:36px}
 h1{font-size:42px}
 html[lang] .contact-heading h2{font-size:16px;line-height:20px;font-weight:600}
 .contact-details p,.phone-link,.wechat-button,.detail-label{font-size:12px;line-height:1.7}
 .footer-bottom{font-size:10px;line-height:20px}
}
@media(max-width:768px){
 :root{--reference-heading-size:32px;--reference-body-leading:23px}
 html{scroll-padding-top:100px}
 .hero{min-height:860px}
 .hero-copy{top:20%;width:310px;padding:0}
 h1,html[lang=en] h1{font-size:22px;line-height:30px;font-weight:600;letter-spacing:.02em}
 .hero-brand{top:50%;width:200px}
 .hero-business{top:82%;width:100%;gap:0;flex-direction:column;align-items:center}
 .hero-business>a,.hero-business>a:first-child,.hero-business>a:nth-child(odd),.hero-business>a:nth-child(n+3){width:calc(100% - 44px);padding:0!important;border:0;min-height:0;margin:0 0 40px}
 .hero-business>a:last-child{margin-bottom:0}
 .hero-business>a+a::before{display:none}
 .business-name{font-size:16px;line-height:20px;font-weight:700;letter-spacing:.14em;margin-bottom:8px;min-height:0}
 .business-name::after{display:none}
 .business-caption{font-size:14px;line-height:16px;font-weight:400;letter-spacing:.1em;max-width:300px}
 .hero-bottom{right:22px;top:6px;bottom:auto}
 .motion-toggle{font-size:9px}
 .platform .statement-line{align-items:flex-start;flex-direction:column;gap:15px}
 .menu-links a{padding:15px 0}
 .menu-links a>span{font-size:26px}
}
@media(max-width:639px){
 :root{--header-height:72px}
 .site-header,.site-header.is-scrolled{padding:0 24px}
 .site-header .brand img{width:148px;height:38px}
 .header-actions{gap:14px}
 .language-options{gap:10px}
 .language-button{font-size:14px}
 .menu-toggle{width:32px}
}
@media(max-width:374px){.site-header,.site-header.is-scrolled{padding:0 16px}.site-header .brand img{width:134px;height:35px}.header-actions{gap:10px}.hero-copy{max-width:calc(100% - 32px)}}
@media(prefers-reduced-motion:reduce){.hero-copy,.hero-business{animation:none}}

:root{--brand-red:#831a21}
.site-footer{background:#0b0b0d;padding:80px clamp(32px,4.2vw,112px) 32px;color:#fff}
.footer-bottom{display:flex;justify-content:center;align-items:center;border-color:#ffffff1f;padding-top:30px;font-size:13px;line-height:26px;color:#a6a6ad}
.registrations{display:flex;justify-content:center;flex-wrap:wrap;gap:10px 26px;text-align:center;width:100%}
.subpage-main{margin-top:var(--header-height);min-height:calc(100svh - var(--header-height) - 230px)}
.subpage-main>.section-shell{max-width:1400px;margin:auto;padding:60px 7% 90px;border:0}
.subpage-main h1{font-size:var(--reference-heading-size);line-height:1.15;font-weight:600;letter-spacing:.02em;text-shadow:none;margin:0 0 30px}
.subpage-main .about-layout{padding:70px 0 40px;align-items:start}
.subpage-main .vision-intro{padding:50px 0 70px}
.subpage-main .section-heading{padding:45px 0 40px}
@media(max-width:768px){
 .registrations{gap:8px 14px;flex-direction:column;align-items:center}
 .subpage-main>.section-shell{padding:40px 7% 60px}
 .subpage-main .about-layout{padding:30px 0 0;gap:20px}
 .subpage-main .vision-intro{padding:15px 0 35px}
}

/* Shared sitemap: the footer belongs to the homepage only. */
body:not([data-page="home"]) .site-footer{display:none}
.site-footer{display:grid;grid-template-columns:minmax(220px,.9fr) minmax(0,4fr);column-gap:clamp(64px,4.8vw,112px);row-gap:54px}
.footer-identity{display:flex;align-items:flex-start;justify-content:flex-start;flex-direction:column;gap:32px;padding:0;border:0}
.site-footer .footer-brand{opacity:1;flex-shrink:0}
.footer-social{display:flex;align-items:center;gap:12px}
.footer-social-item{display:inline-flex;align-items:center;justify-content:center;flex:none;width:44px;height:44px;border:1px solid #ffffff30;border-radius:50%;background:transparent}
.footer-social-icon{display:block;width:24px;height:24px;background-position:center;background-repeat:no-repeat;background-size:contain}
.social-wechat{background-image:url('/assets/social/wechat-official.svg')}
.social-xiaohongshu{background-image:url('/assets/social/xiaohongshu-official.png')}
.social-bilibili{background-image:url('/assets/social/bilibili-official.png')}
.social-douyin{width:21px;background-image:url('/assets/social/douyin-official.png');background-size:auto 24px;background-position:left center}
.footer-sitemap{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:clamp(28px,2.5vw,56px);padding:0}
.footer-column h2{margin:0 0 22px;font-size:18px;line-height:1.5;font-weight:500;letter-spacing:0;color:#f5f5f7}
.footer-column ul{list-style:none;margin:0;padding:0}
.footer-column li{margin:0}
.footer-column li a{display:inline-flex;align-items:center;min-height:44px;padding:7px 0;font-size:16px;line-height:26px;color:#a6a6ad;transition:color 180ms ease}
.site-footer .footer-bottom{grid-column:1/-1;font-size:13px;line-height:26px;padding-top:30px;color:#a6a6ad}
.site-footer .registrations{gap:12px 28px}
.site-footer .registrations a{min-height:32px;justify-content:center;gap:7px}
.site-footer .registrations img{width:14px;height:14px}
.menu-dialog-inner{min-height:100%;height:auto}
.menu-links{padding:24px 0;flex:1 0 auto}
.menu-links a.is-current>span{color:#fff}
.menu-links a.is-current small{color:#fff}
html.home-returning body[data-page="home"] #main-content,html.home-returning body[data-page="home"] .site-footer{animation:home-return-enter 620ms cubic-bezier(.2,.7,.3,1) both}
@keyframes home-return-enter{from{opacity:0}to{opacity:1}}
@media(hover:hover) and (pointer:fine){.footer-column a:hover,.site-footer .registrations a:hover{color:#fff}}
@media(max-width:1100px){.site-footer{grid-template-columns:1fr;row-gap:40px}.footer-identity{flex-direction:row;align-items:center;gap:48px}.footer-sitemap{gap:32px}}
@media(max-width:760px){
 .site-footer{padding:56px 7% 28px;row-gap:36px}
 .footer-identity{align-items:flex-start;flex-direction:column;gap:28px;padding:0}
 .footer-sitemap{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px 24px;padding:0}
 .footer-column h2{font-size:17px;margin-bottom:15px}
 .footer-column li a{font-size:14px;line-height:24px}
 .site-footer .footer-bottom{font-size:12px;line-height:24px;padding-top:24px}
 .site-footer .registrations{gap:8px}
 .menu-links{padding:18px 0}
 .menu-links a{gap:20px;padding:12px 0;min-height:58px}
 .menu-links a>span{font-size:24px;line-height:1.4}
}
@media(max-width:359px){.footer-sitemap{column-gap:18px}.footer-column h2{font-size:16px}.footer-column li a{font-size:13px}.menu-links a>span{font-size:21px}}
@media(prefers-reduced-motion:reduce){html.home-returning body[data-page="home"] #main-content,html.home-returning body[data-page="home"] .site-footer{animation:none;opacity:1}}

/* Shared homepage logo dimensions and a direction-aware header. */
:root{--brand-logo-width:200px;--brand-logo-height:52px}
body[data-page="home"] .site-header .brand img,.site-footer .footer-brand img{width:var(--brand-logo-width);height:var(--brand-logo-height);object-fit:contain;object-position:left center}
body[data-page="home"] .site-header{transition:transform 280ms cubic-bezier(.22,1,.36,1);will-change:transform}
body[data-page="home"] .site-header.is-hidden{transform:translateY(calc(-100% - 1px));pointer-events:none}
body[data-page="home"] .site-header:focus-within{pointer-events:auto}
@media(max-width:1279px){:root{--brand-logo-width:180px;--brand-logo-height:46px}}
@media(max-width:639px){:root{--brand-logo-width:148px;--brand-logo-height:38px}}
@media(max-width:374px){:root{--brand-logo-width:134px;--brand-logo-height:35px}}
@media(prefers-reduced-motion:reduce){body[data-page="home"] .site-header{transition:none}}

/* Japanese uses native Japanese glyphs and allows natural line wrapping. */
html[lang="ja"] body{font-family:-apple-system,BlinkMacSystemFont,"Hiragino Kaku Gothic ProN","Hiragino Sans","Yu Gothic",Meiryo,sans-serif}
html[lang="ja"] .hero-copy h1{letter-spacing:.025em}
@media(min-width:1280px) and (max-width:1699px){html[lang="ja"] body[data-page="home"] .desktop-nav{display:none}html[lang="ja"] body[data-page="home"] .menu-toggle{display:flex}html[lang="ja"] body[data-page="home"] .header-actions{margin-left:auto}}

/* Registration details: a slightly larger type size and a compact bottom row. */
.site-footer{padding-bottom:18px}
.site-footer .footer-bottom{padding-top:16px;font-size:15px;line-height:24px}
.site-footer .registrations img{width:16px;height:16px}
@media(max-width:760px){.site-footer{padding-bottom:16px}.site-footer .footer-bottom{padding-top:14px;font-size:13px;line-height:22px}.site-footer .registrations{gap:4px}.site-footer .registrations a{min-height:28px}.site-footer .registrations img{width:15px;height:15px}}