:root{
  --bg:#FDFDFD;
  --bg-panel:#F7F7F7;
  --bg-panel-2:#F1F1F1;
  --surface:#FFFFFF;
  --border:#E6E6E6;
  --border-strong:#D4D4D4;
  --accent:#2DB585;
  --accent-hover:#3BC293;
  --accent-dark:#1C8A62;
  --accent-ring:rgba(45,181,133,.18);
  --text:#171717;
  --text-muted:#6B6B6B;
  --text-faint:#9B9B9B;
  --dash:#A8A8A8;
  --grid-line:#EAEAEA;
  --chrome-dot:#DADADA;
  --on-accent:#FFFFFF;
  --success:#1C8A62;
  --warn:#B7791F;
  --error:#C2453D;
  --clear:transparent;
  --veil:rgba(23,23,23,.2);
  --font-display:'Inter','Noto Sans SC','PingFang SC','Hiragino Sans GB','Microsoft YaHei',system-ui,sans-serif;
  --font-body:'Inter','Noto Sans SC','PingFang SC','Hiragino Sans GB','Microsoft YaHei',system-ui,-apple-system,'Segoe UI',sans-serif;
  --font-mono:'JetBrains Mono',ui-monospace,'SFMono-Regular',Menlo,Consolas,'Liberation Mono',monospace;
  --radius:6px;
  --radius-sm:4px;
  --radius-xs:3px;
  --radius-pill:999px;
  --radius-round:50%;
  --shadow-window:0 1px 2px rgba(23,23,23,.04),0 18px 40px -18px rgba(23,23,23,.14);
  --shadow-knob:0 1px 1px rgba(23,23,23,.18);
  --wrap:1200px;
  --head-wrap:1280px;
  --reading:800px;
  --gutter:40px;
  --nav-h:64px;
  --peek-h:60px;
  --ease:cubic-bezier(.2,.7,.2,1);
  --speed:150ms;
  --space-section:96px;
  --weight-display:400;
  --weight-medium:500;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:24px}
html.nav-open{overflow:hidden}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font-body);font-size:15px;line-height:1.6;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer}
button:disabled{cursor:not-allowed}
button,select,input{max-width:100%}
img,svg{display:block;max-width:100%}
img{height:auto}
svg{flex-shrink:0}
h1,h2,h3,h4,p,figure,blockquote{margin:0}
h1,h2,h3,h4{font-family:var(--font-display);font-weight:var(--weight-display);text-wrap:balance;letter-spacing:-.02em}
h1{font-size:clamp(34px,3.2vw + 2px,48px);line-height:1.14}
h2{font-size:clamp(26px,2.5vw,36px);line-height:1.25}
h3{font-size:21px;line-height:1.35}
strong{font-weight:var(--weight-medium);color:var(--text)}
ul,ol{padding-left:1.5em}
code,kbd,pre{font-family:var(--font-mono)}
code{overflow-wrap:anywhere}
pre{max-width:100%;min-width:0;overflow-x:auto;padding:22px;border:1px solid var(--border);border-radius:var(--radius);background:var(--bg-panel);color:var(--text);font-size:13px;line-height:1.8;tab-size:2}
pre code{overflow-wrap:normal;word-break:normal;white-space:pre}
hr{border:0;border-top:1px solid var(--border);margin:32px 0}
[hidden]{display:none!important}
:focus-visible{outline:2px solid var(--text);outline-offset:4px}
::selection{background:var(--bg-panel-2);color:var(--text)}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.nowrap{white-space:nowrap}
.muted{color:var(--text-muted)}
.mono{font-family:var(--font-mono)}
.wrap{width:100%;max-width:calc(var(--wrap) + var(--gutter) * 2);margin-inline:auto;padding-inline:var(--gutter)}
.reading{max-width:calc(var(--reading) + var(--gutter) * 2)}
.section{padding-top:var(--space-section);padding-bottom:var(--space-section);border-top:1px solid var(--border)}
.section-heading{margin-bottom:32px}
.section-heading p{margin-top:16px;max-width:680px;color:var(--text-muted)}
.flow>*+*{margin-top:20px}
.prose,.article-body{min-width:0;overflow-wrap:break-word}
.prose h2,.article-body h2{margin-top:56px;margin-bottom:20px}
.prose h3,.article-body h3{margin-top:32px;margin-bottom:16px}
.prose p,.prose ul,.prose ol,.article-body p,.article-body ul,.article-body ol{margin-top:16px;margin-bottom:16px}
.prose p,.article-body p{line-height:1.85}
.prose a:not(.btn),.article-body a:not(.btn){text-decoration:underline;text-decoration-color:var(--border-strong);text-underline-offset:4px}
.prose :not(pre)>code,.article-body :not(pre)>code{padding:2px 5px;border-radius:var(--radius-xs);background:var(--bg-panel-2);color:var(--text);font-size:.9em}
.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.grid>*,.bento>*,.head-row>*,.footer-grid>*{min-width:0}
.card,.panel{min-width:0;padding:26px;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);color:var(--text)}
.card{transition:border-color var(--speed) ease}
.card:hover{border-color:var(--border-strong)}
.card p{margin-top:14px;color:var(--text-muted)}
.panel-secondary{background:var(--bg-panel);color:var(--text)}
.fact-rail{background:var(--bg-panel);color:var(--text);border-block:1px solid var(--border)}
.fact-rail>.wrap{border-inline:1px solid var(--border);padding-top:48px;padding-bottom:48px}
.actions{margin-top:28px;display:flex;flex-wrap:wrap;gap:10px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:42px;padding:9px 18px;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);color:var(--text);font-size:14.5px;font-weight:var(--weight-medium);line-height:1.5;text-align:center;transition:background-color var(--speed) ease,border-color var(--speed) ease}
.btn svg{width:15px;height:15px}
.btn-primary{background:var(--accent);border-color:var(--accent-dark);color:var(--text)}
.btn-primary:hover,.btn-primary.is-hover{background:var(--accent-hover);color:var(--text)}
.btn-ghost:hover,.btn-ghost.is-hover{border-color:var(--border-strong);background:var(--bg-panel);color:var(--text)}
.btn-ghost svg{color:var(--text-muted)}
.btn:active{background:var(--bg-panel-2);color:var(--text)}
.btn-primary:active{background:var(--accent);color:var(--text)}
.btn:disabled,.btn[aria-disabled="true"]{background:var(--bg-panel-2);color:var(--text-muted);border-color:var(--border);pointer-events:none}
.btn.is-focus{outline:2px solid var(--text);outline-offset:4px}
.site-head{position:relative;z-index:40;height:var(--nav-h);border-bottom:1px solid var(--border);background:var(--bg);color:var(--text)}
.head-row{width:100%;max-width:min(100%,calc(var(--head-wrap) + var(--gutter) * 2));padding-inline:var(--gutter);margin-inline:auto;height:100%;display:flex;align-items:center;gap:36px}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{width:28px;height:28px;flex-shrink:0}
.brand-name{font-family:var(--font-display);font-size:15.5px;font-weight:var(--weight-medium);letter-spacing:-.01em;color:var(--text)}
.main-nav{flex:1;min-width:0}
.main-nav ul{display:flex;align-items:center;list-style:none;margin:0;padding:0;gap:2px}
.nav-link{display:inline-flex;align-items:center;justify-content:center;min-height:32px;padding:4px 13px;border:1px solid var(--clear);border-radius:var(--radius-pill);font-size:14px;color:var(--text-muted);white-space:nowrap;transition:color var(--speed) ease,background-color var(--speed) ease}
.nav-link:hover{color:var(--text)}
.nav-link[aria-current="page"]{color:var(--text);background:var(--bg-panel-2);border-color:var(--border)}
.head-tools{display:flex;align-items:center;gap:10px;flex-shrink:0;margin-left:auto}
.lang-box{position:relative}
.lang{display:inline-flex;align-items:center;justify-content:center;gap:7px;min-height:32px;padding:5px 12px;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);color:var(--text);font-size:13px;white-space:nowrap}
.lang:hover{border-color:var(--border-strong)}
.lang svg{width:14px;height:14px;color:var(--text-muted)}
.caret{color:var(--text-muted);font-size:11px}
.lang-menu{position:absolute;right:0;top:calc(100% + 8px);width:190px;padding:6px;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);color:var(--text);z-index:43}
.lang-menu a{display:flex;align-items:center;min-height:44px;padding:9px 12px;border-radius:var(--radius-sm)}
.lang-menu a:hover,.lang-menu a[aria-current="true"]{background:var(--bg-panel-2);color:var(--text)}
.menu-toggle{display:none;align-items:center;justify-content:center;min-width:44px;min-height:44px;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);color:var(--text)}
.menu-toggle svg{width:20px;height:20px}
.mobile-nav{position:absolute;top:var(--nav-h);left:0;right:0;z-index:42;max-height:calc(100dvh - var(--nav-h));overflow-y:auto;overscroll-behavior:contain;padding:16px var(--gutter) 24px;border-bottom:1px solid var(--border);background:var(--surface);color:var(--text)}
.mobile-nav ul{list-style:none;margin:0;padding:0}
.mobile-nav a{display:flex;align-items:center;width:100%;min-height:44px;padding:10px 14px;border-radius:var(--radius)}
.mobile-nav a:hover,.mobile-nav a[aria-current]{background:var(--bg-panel-2);color:var(--text)}
.mobile-languages{margin-top:16px;padding-top:16px;border-top:1px solid var(--border)}
.menu-veil{position:fixed;inset:var(--nav-h) 0 0;z-index:30;border:0;border-radius:0;background:var(--veil);color:var(--text)}
.site-footer{border-top:1px solid var(--border);background:var(--bg);color:var(--text);padding-top:64px;padding-bottom:28px}
.footer-grid{display:grid;grid-template-columns:1.25fr .8fr 1.2fr .7fr;gap:36px}
.footer-brand p{max-width:290px;margin-top:20px;color:var(--text-muted);font-size:13px}
.footer-title{font-size:13px;letter-spacing:0;margin-bottom:18px}
.footer-links{list-style:none;padding:0;margin:0}
.footer-links li+li{margin-top:7px}
.footer-links a{display:inline-block;padding-block:3px;color:var(--text-muted);font-size:13px;overflow-wrap:anywhere}
.footer-links a:hover{text-decoration:underline;text-underline-offset:4px;color:var(--text)}
.footer-bottom{margin-top:48px;padding-top:22px;border-top:1px solid var(--border);display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:12px;color:var(--text-muted)}
.reveal{opacity:1;transform:none}
.reveal-pending{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.shown{opacity:1;transform:none}
.hero{min-height:calc(100vh - var(--nav-h) - var(--peek-h));min-height:calc(100svh - var(--nav-h) - var(--peek-h));display:grid;align-content:center;padding-top:40px;padding-bottom:40px;overflow-x:clip}
.bento{display:grid;grid-template-columns:repeat(24,minmax(0,1fr));grid-template-rows:auto auto auto;gap:12px}
.cell{position:relative;min-width:0;border:1px solid var(--border);border-radius:var(--radius);transition:transform .2s var(--ease),border-color .2s ease}
.cell:hover{transform:translateY(-2px);border-color:var(--border-strong)}
.cell-lead{grid-column:1/12;grid-row:1;background:var(--bg);color:var(--text);padding:36px 36px 34px}
.cell-device{grid-column:12/25;grid-row:1/3;background:var(--bg);color:var(--text)}
.cell-kernel{grid-column:1/7;grid-row:2;background:var(--bg-panel);color:var(--text)}
.cell-license{grid-column:7/12;grid-row:2;background:var(--bg-panel-2);color:var(--text)}
.cell-platforms{grid-column:1/15;grid-row:3;background:var(--bg-panel);color:var(--text)}
.cell-proto{grid-column:15/25;grid-row:3;background:var(--bg-panel-2);color:var(--text)}
.tag{display:inline-flex;align-items:center;gap:9px;min-height:28px;padding:3px 13px 3px 11px;border:1px solid var(--border);border-radius:var(--radius-pill);background:var(--surface);color:var(--text-muted);font-size:12.5px;max-width:100%;overflow-wrap:anywhere}
.tag-dot{width:7px;height:7px;flex-shrink:0;border-radius:var(--radius-round);background:var(--accent);color:var(--text);box-shadow:0 0 0 3px var(--accent-ring)}
.hero-title{margin-top:26px;font-family:var(--font-display);font-weight:var(--weight-display);font-size:clamp(34px,3.2vw + 2px,48px);line-height:1.14;letter-spacing:-.02em}
.hero-title>span{display:block}
.hero-title .t1{color:var(--text)}
.hero-title .t2{color:var(--accent)}
.lead-text{margin-top:26px;max-width:450px;font-size:15px;line-height:1.72;color:var(--text-muted)}
.cell-mini{padding:20px 22px}
.mini-head{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--text-muted)}
.mini-head svg{width:16px;height:16px;color:var(--text)}
.mini-value{margin-top:10px;font-family:var(--font-display);font-size:22px;font-weight:var(--weight-display);line-height:1.2;letter-spacing:-.02em}
.mini-value.is-mono{font-family:var(--font-mono);font-size:19px;letter-spacing:-.01em}
.mini-text{margin-top:7px;font-size:12.5px;line-height:1.62;color:var(--text-muted)}
.strip{display:flex;align-items:center;gap:16px;height:100%;padding:18px 22px}
.strip-label{flex-shrink:0;font-family:var(--font-mono);font-size:11.5px;color:var(--text-muted);letter-spacing:.02em}
.plat-list,.proto-list{display:flex;flex-wrap:wrap;gap:8px;min-width:0}
.plat{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:34px;padding:6px 13px 6px 11px;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);color:var(--text);font-size:13px;transition:border-color var(--speed) ease}
.plat:hover{border-color:var(--border-strong)}
.plat svg{width:15px;height:15px}
.proto-list{gap:6px}
.proto{display:inline-flex;align-items:center;justify-content:center;min-height:26px;padding:3px 10px;border:1px solid var(--border);border-radius:var(--radius-pill);background:var(--surface);color:var(--text);font-family:var(--font-mono);font-size:11.5px}
.peek{border-top:1px solid var(--border)}
.peek .wrap{padding-top:22px;padding-bottom:96px}
.peek-eyebrow{display:flex;flex-wrap:wrap;gap:6px 14px;list-style:none;margin:0;padding:0;font-family:var(--font-mono);font-size:12px;color:var(--text-muted)}
.peek-eyebrow li{display:inline-flex;align-items:center;gap:14px}
.peek-eyebrow li+li::before{content:"/";color:var(--border-strong)}
.peek-title{margin-top:56px;font-size:30px;line-height:1.25}
.peek-title span{display:block}
@media(min-width:1101px){.mobile-nav{display:none!important}}
@media(max-width:1100px){
  .main-nav{display:none}
  .menu-toggle{display:inline-flex}
  .head-tools{margin-left:auto}
}
@media(max-width:1100px){
  .hero{min-height:0;padding-top:32px;padding-bottom:48px}
  .bento{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cell-lead,.cell-device,.cell-platforms,.cell-proto{grid-column:1/-1;grid-row:auto}
  .cell-kernel{grid-column:1/2;grid-row:auto}
  .cell-license{grid-column:2/3;grid-row:auto}
  .head-row{gap:20px}
  .grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media(max-width:768px){
  h1,.hero-title{font-size:clamp(24px,5vw,30px)}
  h2{font-size:26px}
}
@media(max-width:640px){
  :root{--gutter:18px;--space-section:64px}
  .brand-name{display:none}
  .head-row{gap:12px}
  .lang{padding-inline:10px;min-height:36px}
  .cell-lead{padding:26px 22px}
  .cell-kernel,.cell-license{grid-column:1/-1}
  .strip{flex-direction:column;align-items:flex-start}
  .plat-list{gap:6px}
  .plat{padding-inline:9px;font-size:12px}
  .grid,.footer-grid{grid-template-columns:minmax(0,1fr)}
  .footer-grid{gap:28px}
  .footer-brand .brand-name{display:inline}
  .tilt,[data-tilt]{transform:none!important}
  .card,.panel{padding:22px}
  .cell:hover{transform:none}
  .hero-title{font-size:clamp(24px,7vw,30px)}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
  .reveal-pending{opacity:1;transform:none}
  .cell:hover{transform:none}
}