:root{
  color-scheme:light;
  --bg:#F6F7F3;--bg-top:#FBFBF8;--bg-panel:#FFFFFF;--bg-panel2:#ECEEE8;
  --border:#DCE0D8;--border-strong:#C6CCC2;--accent:#0E8A6C;--accent-dark:#0A5F4B;--cyan:#1F8BAA;--apricot:#E8833A;
  --text:#121613;--muted:#5C645E;--faint:#8A928B;--success:#1E9E5A;--warn:#C98A12;--error:#C8402F;
  --on-ink:#F6F7F3;--on-ink-muted:#A9B2AB;
  --accent-a06:rgb(14 138 108 / .06);--accent-a10:rgb(14 138 108 / .10);--accent-a12:rgb(14 138 108 / .12);--accent-a22:rgb(14 138 108 / .22);--accent-a40:rgb(14 138 108 / .40);
  --ink-a03:rgb(18 22 19 / .03);--ink-a04:rgb(18 22 19 / .04);--ink-a07:rgb(18 22 19 / .07);--ink-a12:rgb(18 22 19 / .12);--ink-veil:rgb(18 22 19 / .36);
  --white-a40:rgb(255 255 255 / .40);--white-a70:rgb(255 255 255 / .70);--clear:transparent;
  --term-top:#F4F6F1;--term-bot:#E9ECE5;
  --flag-red:#D0322D;--flag-white:#FFFFFF;--flag-blue:#2A3A75;--flag-black:#1B1C1B;--flag-gold:#E8B730;
  --r-card:10px;--r-term:7px;--r-sm:5px;--r-pill:999px;--r-dot:50%;--r-pixel:1px;
  --f-display:"Inter","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --f-body:"Inter","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --f-mono:"JetBrains Mono",ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
  --f-mono-cjk:"JetBrains Mono",ui-monospace,"SFMono-Regular",Menlo,Consolas,"Noto Sans SC","PingFang SC","Microsoft YaHei",monospace;
  --size-display:66px;--size-h2:38px;--size-h3:22px;--size-body:16px;--size-small:13px;
  --weight-normal:400;--weight-medium:500;--weight-strong:600;
  --shadow-card:inset 0 1px 0 var(--white-a70),0 26px 52px -22px var(--accent-a40),0 10px 30px -12px var(--accent-a12),0 1px 3px var(--ink-a04);
  --shadow-float:0 14px 30px -12px var(--accent-a40),0 2px 6px var(--ink-a07);
  --shadow-panel:inset 0 1px 0 var(--white-a70),0 24px 56px -28px var(--accent-a22);
  --wrap:1312px;--gutter:64px;--header-height:100px;--anchor-offset:116px;--toc-offset:80px;--toc-landing:156px;
  --ease:ease;--fast:.2s;--reveal-time:.35s;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:var(--anchor-offset)}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--f-body);font-size:var(--size-body);line-height:1.6;-webkit-font-smoothing:antialiased}
html.nav-open{overflow:hidden}
[hidden]{display:none!important}
a{color:inherit;text-underline-offset:4px}
button,input,select,textarea{font:inherit}
button{cursor:pointer;color:inherit}
button,select,input,textarea{max-width:100%}
img{display:block;max-width:100%;height:auto}
svg{flex-shrink:0}
p,ul,ol{margin:0}
ul{padding:0;list-style:none}
h1,h2,h3,h4{font-family:var(--f-display);font-weight:var(--weight-normal);text-wrap:balance;overflow-wrap:break-word}
h1{font-size:clamp(52px,4.6vw,72px);line-height:1.12;letter-spacing:-.02em;margin:0 0 24px}
h2{font-size:var(--size-h2);line-height:1.3;letter-spacing:-.02em;margin:0 0 24px}
h3{font-size:var(--size-h3);line-height:1.4;margin:0 0 16px}
strong{font-weight:var(--weight-strong);color:var(--text)}
:where(a,button,input,select,textarea,summary,[tabindex]):focus-visible{outline:2px solid var(--accent);outline-offset:3px}
code{font-family:var(--f-mono-cjk);overflow-wrap:anywhere}
pre{max-width:100%;overflow-x:auto;padding:24px;background:var(--term-top);border:1px solid var(--border);border-radius:var(--r-term)}
pre code{overflow-wrap:normal;white-space:pre}
.no-break{white-space:nowrap}
.wrap{width:100%;max-width:calc(var(--wrap) + var(--gutter)*2);margin-inline:auto;padding-inline:var(--gutter)}
.section{padding-top:80px;padding-bottom:80px}
.section + .section{border-top:1px solid var(--border)}
.stack{display:grid;gap:24px}
.stack>*{min-width:0}
.grid-three{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.grid-five{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:16px}
.grid-three>*,.grid-five>*{min-width:0}
.panel{padding:28px;border:1px solid var(--border);border-radius:var(--r-card);background:var(--bg-panel);box-shadow:var(--shadow-panel);min-width:0}
.muted{color:var(--muted)}
.mono{font-family:var(--f-mono-cjk);font-variant-numeric:tabular-nums}
.small{font-size:var(--size-small)}
.prose{max-width:860px;overflow-wrap:anywhere}
.prose p,.prose ul,.prose ol{margin-bottom:24px}
.prose ul{list-style:disc;padding-left:24px}
.prose ol{padding-left:28px}
.prose h2{margin-top:48px}
.prose h3{margin-top:32px}
.prose li+li{margin-top:8px}
.prose img{height:auto}
.decorated{position:relative;overflow-x:clip}
#server-status{position:relative;display:block;min-width:0;max-width:100%;overflow:hidden;margin-block:32px}
#server-status+*{margin-top:32px}
#server-status :where(.grid,.server-grid){display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,240px),1fr));gap:16px}
#server-status :where(.grid,.server-grid)>*{min-width:0}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 28px;border:1px solid var(--clear);border-radius:var(--r-pill);font-family:var(--f-body);font-size:var(--size-body);font-weight:var(--weight-medium);line-height:1.3;text-decoration:none;white-space:nowrap;flex-shrink:0;transition:background-color var(--fast),transform var(--fast),color var(--fast)}
.btn--solid,.btn-primary{background:var(--accent);color:var(--bg-panel);box-shadow:inset 0 1px 0 var(--white-a40),0 12px 26px -12px var(--accent-a40)}
.btn--solid:hover,.btn-primary:hover{background:var(--accent-dark);transform:translateY(-1px)}
.btn--line,.btn-secondary{border-color:var(--text);color:var(--text);background:var(--clear)}
.btn--line:hover,.btn-secondary:hover{background:var(--bg-panel)}
.btn:active{transform:translateY(1px)}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.5;cursor:not-allowed;pointer-events:none}
.btn--compact{min-height:36px;padding-inline:18px;font-size:14px}
.ctas{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
.announce{position:relative;height:36px;display:flex;align-items:center;justify-content:center;background:var(--text);color:var(--on-ink);font-size:13px;overflow:hidden}
.announce__link{position:relative;z-index:1;display:inline-flex;align-items:center;gap:8px;min-height:24px;text-decoration:none;letter-spacing:.01em}
.announce__link .sep{color:var(--on-ink-muted)}
.announce__arw{display:inline-block;transition:transform var(--fast)}
.announce__link:hover .announce__arw{transform:translateX(3px)}
.announce__dots{position:absolute;inset:0 0 0 auto;width:min(380px,30%);background:linear-gradient(90deg,var(--clear),var(--accent) 42%,var(--apricot));-webkit-mask:radial-gradient(circle,var(--text) 1.15px,var(--clear) 1.6px) 0 0/5px 5px;mask:radial-gradient(circle,var(--text) 1.15px,var(--clear) 1.6px) 0 0/5px 5px;pointer-events:none}
#site-header{position:relative;z-index:50}
.nav{position:relative;z-index:52;background:var(--bg-top);border-bottom:1px solid var(--border)}
.nav__in{display:flex;align-items:center;gap:28px;height:64px;flex-wrap:nowrap}
.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;color:var(--text);font-weight:var(--weight-strong);font-size:18px;letter-spacing:-.015em;flex:none;white-space:nowrap}
.brand img{width:28px;height:28px}
.nav__desktop{flex:1;min-width:0}
.tabs{display:flex;align-items:center;list-style:none;margin:0;padding:0;height:64px;gap:2px}
.tabs li{display:flex;min-width:0}
.tabs a{position:relative;display:flex;align-items:center;height:64px;padding:0 12px;font-size:14px;color:var(--muted);text-decoration:none;white-space:nowrap;transition:color var(--fast)}
.tabs a::after{content:"";position:absolute;left:12px;right:12px;bottom:-1px;height:2px;border-radius:var(--r-pixel);background:var(--border-strong);transform:scaleX(0);transform-origin:left center;transition:transform .28s}
.tabs a:hover{color:var(--text)}
.tabs a:hover::after{transform:scaleX(1)}
.tabs a[aria-current="page"]{color:var(--text)}
.tabs a[aria-current="page"]::after{background:var(--accent);transform:scaleX(1)}
.nav__end{margin-left:auto;display:flex;align-items:center;gap:16px;flex-shrink:0}
.login{display:inline-flex;align-items:center;justify-content:center;min-height:36px;padding:0 18px;border:1px solid var(--text);border-radius:var(--r-pill);font-size:14px;color:var(--text);text-decoration:none;white-space:nowrap;transition:background-color var(--fast),color var(--fast)}
.login:hover{background:var(--text);color:var(--on-ink)}
.lang{position:relative}
.lang__button{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-width:44px;min-height:36px;width:auto;padding:4px 0;background:var(--clear);border:0;font-size:14px;color:var(--muted);white-space:nowrap}
.lang__button svg{width:15px;height:15px}
.lang__button span{white-space:nowrap}
.lang__panel{position:absolute;z-index:60;right:0;top:calc(100% + 12px);min-width:180px;padding:8px;background:var(--bg-panel);border:1px solid var(--border);border-radius:var(--r-card);box-shadow:var(--shadow-float)}
.lang__panel a{display:flex;align-items:center;min-height:40px;padding:8px 12px;text-decoration:none;border-radius:var(--r-sm);white-space:nowrap}
.lang__panel a:hover,.lang__panel a[aria-current="true"]{background:var(--accent-a10);color:var(--accent-dark)}
.menu-toggle{display:none;align-items:center;justify-content:center;flex-direction:column;gap:4px;min-width:44px;min-height:44px;background:var(--clear);border:1px solid var(--border);border-radius:var(--r-sm);padding:8px}
.menu-toggle__line{display:block;width:20px;height:2px;background:currentColor}
.menu-veil{position:fixed;z-index:48;inset:var(--header-height) 0 0;background:var(--ink-veil);border:0;width:100%;cursor:pointer}
.nav__drawer{position:fixed;z-index:51;inset:var(--header-height) 0 auto;height:calc(100dvh - var(--header-height));max-height:calc(100dvh - var(--header-height));padding:16px var(--gutter) 32px;overflow-y:auto;overscroll-behavior:contain;background:var(--bg-panel);border-top:1px solid var(--border)}
.nav__drawer a{display:flex;align-items:center;width:100%;min-height:44px;padding:12px 8px;text-decoration:none;border-bottom:1px solid var(--border)}
.nav__drawer a[aria-current]{color:var(--accent-dark);background:var(--accent-a06)}
.drawer__languages{margin-top:24px;border-top:1px solid var(--border)}
.site-footer{border-top:1px solid var(--border);background:var(--bg-panel2);padding-top:56px;padding-bottom:28px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1.6fr 1fr 1fr;gap:40px}
.footer-grid>*{min-width:0}
.footer-brand p{margin-top:20px;color:var(--muted);max-width:320px}
.footer-title{font-size:14px;font-weight:var(--weight-strong);margin:0 0 16px}
.footer-links{display:grid;gap:6px}
.footer-links a{display:inline-flex;align-items:center;min-height:28px;color:var(--muted);font-size:14px;text-decoration:none}
.footer-links a:hover{color:var(--accent-dark)}
.footer-nav{grid-template-columns:repeat(2,minmax(0,1fr));column-gap:16px}
.footer-bottom{display:flex;align-items:center;flex-wrap:wrap;justify-content:space-between;gap:16px;margin-top:40px;padding-top:24px;border-top:1px solid var(--border);font-size:13px;color:var(--muted)}
.footer-legal{display:flex;flex-wrap:wrap;gap:16px}
.footer-legal a{display:inline-flex;align-items:center;min-height:24px}
.reveal{transition:opacity var(--reveal-time) ease,transform var(--reveal-time) ease}
.reveal.pending{opacity:0;transform:translateY(16px)}
.reveal.shown{opacity:1;transform:none}
@media(max-width:1380px) and (min-width:1181px){
  .nav__in{gap:16px}
  .tabs a{padding-inline:8px;font-size:13px}
  .tabs a::after{left:8px;right:8px}
  .nav__end{gap:12px}
  .lang__button span{display:none}
}
@media(max-width:1180px){
  .nav__desktop{display:none}
  .nav__end{margin-left:auto}
  .menu-toggle{display:inline-flex}
}
@media(min-width:1181px){.nav__drawer,.menu-veil{display:none}}
@media(max-width:900px){
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid-five{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media(max-width:768px){
  :root{--gutter:24px;--size-h2:30px;--size-h3:20px}
  h1{font-size:40px;line-height:1.15}
  .section{padding-top:48px;padding-bottom:48px}
  .grid-three{grid-template-columns:minmax(0,1fr)}
  .nav__in{gap:12px}
}
@media(max-width:640px){
  :root{--gutter:20px}
  .no-break{white-space:normal}
  .announce{font-size:12px}
  .announce__link .tail{display:none}
  .lang__button span{display:none}
  .nav__end{gap:8px;margin-left:auto}
  .nav__in{gap:8px}
  .brand{font-size:16px;gap:7px}
  .brand img{width:26px;height:26px}
  .login{padding-inline:13px}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:28px}
  .grid-five{grid-template-columns:minmax(0,1fr)}
  .panel{padding:20px}
  .tilt,.stamp,[data-tilt]{transform:none}
  .decorated{max-width:100%}
}
@media(max-width:359px){
  .nav__end{gap:4px}
  .brand{font-size:15px;gap:5px}
  .login{padding-inline:10px}
  .lang__button{min-width:32px}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
  .reveal,.reveal.pending{opacity:1;transform:none}
}