:root {
  --bg:#EEEDFB;
  --bg-panel:#FAFAFF;
  --bg-panel-2:#E1E0F4;
  --border:#CFCDE8;
  --accent:#EE4E34;
  --accent-dark:#C53A23;
  --text:#17162B;
  --text-muted:#5D5B78;
  --success:#1F9D6B;
  --warn:#D98A14;
  --error:#CF2E3A;
  --hero-top:#F4F3FD;
  --hero-bottom:#E6E5F8;
  --apricot:#FFE3C7;
  --apricot-deep:#FFCFA3;
  --apricot-glow:rgba(255,227,199,.85);
  --paper:#FFFFFF;
  --side:#F6F5FD;
  --pill:#E3E4FB;
  --pill-2:#D6D8F7;
  --pill-edge:#C3C5EE;
  --chrome-top:#FCFCFF;
  --chrome-bottom:#F0EFFA;
  --line-soft:#E9E8F6;
  --hi:rgba(255,255,255,.95);
  --shadow-lav:rgba(86,80,186,.12);
  --shadow-lav-strong:rgba(86,80,186,.16);
  --shadow-ink:rgba(23,22,43,.22);
  --ink-06:rgba(23,22,43,.06);
  --ink-10:rgba(23,22,43,.10);
  --veil:rgba(23,22,43,.38);
  --success-ring:rgba(31,157,107,.16);
  --success-soft:#DDF3EA;
  --flag-red:#D8283D;
  --flag-white:#FFFFFF;
  --flag-blue:#2A3887;
  --flag-black:#1C1C1C;
  --flag-gold:#F3C22E;
  --flag-de-red:#DD2A1E;
  --flag-edge:rgba(23,22,43,.16);
  --clear:transparent;
  --font-display:'Inter','Noto Sans SC','Noto Sans JP','Noto Sans KR','PingFang SC','Microsoft YaHei',system-ui,sans-serif;
  --font-body:'Inter','Noto Sans SC','Noto Sans JP','Noto Sans KR','PingFang SC','Hiragino Sans','Microsoft YaHei',system-ui,sans-serif;
  --font-mono:'JetBrains Mono',ui-monospace,'SFMono-Regular',Menlo,Consolas,monospace;
  --r-xs:4px;
  --r-sm:6px;
  --r-btn:8px;
  --r-card:10px;
  --r-win:16px;
  --r-pill:999px;
  --r-round:50%;
  --wrap:1200px;
  --gutter:24px;
  --header-height:102px;
  --toc-height:64px;
  --anchor-offset:182px;
  --display-size:66px;
  --h2-size:36px;
  --h3-size:23px;
  --body-size:16px;
  --weight-normal:400;
  --weight-medium:500;
  --weight-semibold:600;
  --weight-bold:700;
  --weight-heavy:800;
  --weight-display:900;
  --section-space:80px;
  --ease: cubic-bezier(.2,.65,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-padding-top:calc(var(--header-height) + 16px);scroll-behavior:smooth}
html.nav-open{overflow:hidden}
body{margin:0;font-family:var(--font-body);font-size:var(--body-size);color:var(--text);background:var(--bg-panel);line-height:1.5;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
[hidden]{display:none!important}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer}
button,input,select,textarea{border-radius:var(--r-sm)}
button{background:var(--clear)}
img{display:block;max-width:100%;height:auto}
svg{flex-shrink:0}
p{margin:0}
h1,h2,h3,h4{font-family:var(--font-display);color:var(--text);text-wrap:balance;overflow-wrap:break-word}
h1{font-size:var(--display-size);font-weight:var(--weight-display);line-height:1.1;letter-spacing:-.02em;margin:0 0 24px}
h2{font-size:var(--h2-size);font-weight:var(--weight-heavy);line-height:1.2;letter-spacing:-.02em;margin:0 0 24px}
h3{font-size:var(--h3-size);font-weight:var(--weight-heavy);line-height:1.3;margin:0 0 16px}
summary{list-style:none;cursor:pointer}
summary::-webkit-details-marker{display:none}
:focus-visible{outline:2px solid var(--text);outline-offset:3px;border-radius:var(--r-xs)}
::selection{background:var(--apricot);color:var(--text)}
code,kbd,pre{font-family:var(--font-mono)}
code{overflow-wrap:anywhere;font-size:.9em;background:var(--bg);border-radius:var(--r-xs);padding:2px 5px}
pre{max-width:100%;overflow-x:auto;padding:20px;background:var(--side);border:1px solid var(--border);border-radius:var(--r-btn)}
pre code{padding:0;background:var(--clear);overflow-wrap:normal;white-space:pre}
.wrap{width:min(calc(var(--wrap) + var(--gutter)*2),100%);padding-inline:var(--gutter);margin-inline:auto}
.wrap > *, .grid > *, .topbar-in > *, .footer-grid > *{min-width:0}
.section{padding-top:var(--section-space);padding-bottom:var(--section-space);overflow-x:clip}
.section-tint{background:var(--bg);border-block:1px solid var(--border)}
.section-paper{background:var(--bg-panel)}
.section-intro{max-width:760px;margin-bottom:32px}
.section-intro p{color:var(--text-muted);line-height:1.8}
.stack{display:grid;grid-template-columns:minmax(0,1fr);gap:24px}
.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.panel,.card{background:var(--paper);border:1px solid var(--border);border-radius:var(--r-card);padding:28px;box-shadow:0 12px 32px -20px var(--shadow-lav-strong),inset 0 1px 0 var(--hi);min-width:0}
.card p,.panel p{line-height:1.8}
.muted{color:var(--text-muted)}
.mono{font-family:var(--font-mono)}
.no-break{white-space:nowrap}
.sprite{position:absolute;width:0;height:0;overflow:hidden}
.u-st{fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:50px;padding:10px 24px;border-radius:var(--r-btn);border:2px solid var(--text);font-size:16px;font-weight:var(--weight-bold);letter-spacing:-.005em;transition:transform .18s var(--ease),background .18s var(--ease);line-height:1.5;text-align:center}
.btn:hover{transform:translateY(-2px)}
.btn svg{width:16px;height:16px}
.btn-main,.btn-primary{background:var(--text);color:var(--paper);box-shadow:0 12px 26px -10px var(--shadow-ink)}
.btn-alt,.btn-secondary{background:var(--paper);color:var(--text)}
.btn-small{min-height:40px;font-size:14px;padding:7px 16px}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.55;cursor:not-allowed;transform:none;box-shadow:none}
.btn-secondary{flex-shrink:0;white-space:nowrap}
.cta{display:flex;flex-wrap:wrap;gap:12px}
.text-link{display:inline-flex;align-items:center;min-height:28px;text-decoration:underline;text-underline-offset:4px;font-weight:var(--weight-semibold)}
.text-link:hover{color:var(--accent-dark)}
.badge,.chip,.tag{max-width:100%;overflow-wrap:anywhere}
.badge{display:inline-flex;align-items:center;gap:7px;min-height:28px;padding:4px 10px;border:1px solid var(--border);background:var(--bg);border-radius:var(--r-pill);font-size:12px;font-weight:var(--weight-bold)}
.badge-apricot{background:var(--apricot);border-color:var(--apricot-deep)}
.sdot{display:inline-block;flex:none;width:8px;height:8px;border-radius:var(--r-round);background:var(--success);box-shadow:0 0 0 3px var(--success-ring)}
.sdot-warn{background:var(--warn);box-shadow:none}
.sdot-accent{background:var(--accent);box-shadow:none}
.sdot-ink{background:var(--text);box-shadow:none}
.sdot-muted{background:var(--text-muted);box-shadow:none}
.sdot-lilac{background:var(--pill-edge);box-shadow:none}
#site-header{position:sticky;top:0;z-index:50}
.notice{background:var(--accent);color:var(--text)}
.notice-link{display:flex;align-items:center;gap:10px;min-height:38px;padding-top:8px;padding-bottom:8px;font-size:14px;font-weight:var(--weight-bold);letter-spacing:-.005em}
.notice-link svg{width:16px;height:16px}
.notice-link:hover .notice-text{text-decoration:underline;text-underline-offset:3px}
.topbar{position:relative;z-index:52;background:var(--bg-panel);border-bottom:1px solid var(--border)}
.topbar-in{display:flex;align-items:center;height:64px;gap:28px;flex-wrap:nowrap}
.brand{display:inline-flex;align-items:center;gap:10px;flex:none;min-height:32px}
.brand-mark{width:30px;height:30px}
.brand-word{font-family:var(--font-display);font-weight:var(--weight-heavy);font-size:19px;letter-spacing:-.02em}
.nav{display:flex;flex:1;min-width:0;align-items:center}
.nav ul{display:flex;align-items:center;list-style:none;margin:0;padding:0;gap:2px}
.nav li{min-width:0}
.nav li > a,.more > summary{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:38px;padding:0 12px;border-radius:var(--r-sm);font-size:15px;font-weight:var(--weight-medium);cursor:pointer;white-space:nowrap}
.nav a:hover,.more > summary:hover{background:var(--bg-panel-2)}
.nav a[aria-current="page"],.more > summary[aria-current="page"]{font-weight:var(--weight-bold);background:var(--bg)}
.more,.lang{position:relative}
.chev{width:12px;height:12px;transition:transform .2s var(--ease)}
details[open] > summary .chev{transform:rotate(180deg)}
.drop{position:absolute;z-index:60;top:calc(100% + 8px);left:0;min-width:168px;padding:6px;background:var(--paper);border:1px solid var(--border);border-radius:var(--r-card);box-shadow:0 18px 40px -10px var(--shadow-lav-strong),0 2px 6px var(--ink-06)}
.drop a{display:flex;align-items:center;min-height:36px;padding:8px 12px;border-radius:var(--r-sm);font-size:14px;font-weight:var(--weight-medium);white-space:nowrap}
.drop a:hover,.drop a[aria-current="page"]{background:var(--bg)}
.tools{margin-left:auto;display:flex;align-items:center;gap:12px;flex-shrink:0}
.lang-button{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:38px;width:auto;padding:0 10px;border:0;border-radius:var(--r-sm);font-size:14px;font-weight:var(--weight-medium);color:var(--text-muted)}
.lang-button:hover{background:var(--bg-panel-2);color:var(--text)}
.lang-button > svg:first-child{width:16px;height:16px}
.lang-text{white-space:nowrap}
.lang .drop{left:auto;right:0}
.tools-sep{width:1px;height:22px;background:var(--border);flex:none}
.btn-login{display:inline-flex;align-items:center;justify-content:center;min-height:38px;padding:0 18px;border-radius:var(--r-btn);background:var(--text);color:var(--paper);font-size:14.5px;font-weight:var(--weight-bold);white-space:nowrap}
.btn-login:hover{background:var(--text-muted)}
.menu-toggle{display:none;align-items:center;justify-content:center;flex-direction:column;gap:4px;min-width:44px;min-height:44px;padding:10px;border:1px solid var(--border);border-radius:var(--r-sm);background:var(--paper)}
.menu-line{display:block;width:20px;height:2px;background:currentColor}
.menu-toggle[aria-expanded="true"]{background:var(--bg-panel-2)}
.mobile-drawer{position:fixed;top:var(--header-height);right:0;left:0;z-index:55;height:calc(100dvh - var(--header-height));max-height:calc(100dvh - var(--header-height));overflow-y:auto;overscroll-behavior:contain;background:var(--paper);border-top:1px solid var(--border);padding:16px var(--gutter) 32px}
.mobile-drawer a{display:flex;align-items:center;width:100%;min-height:44px;padding:10px 12px;border-radius:var(--r-sm)}
.mobile-drawer a:hover,.mobile-drawer a[aria-current="page"]{background:var(--bg)}
.drawer-heading{margin:20px 12px 8px;font-size:13px;color:var(--text-muted);font-weight:var(--weight-bold)}
.nav-veil{position:fixed;inset:var(--header-height) 0 0;z-index:51;background:var(--veil);border:0}
.footer{background:var(--bg);border-top:1px solid var(--border);padding-top:56px;padding-bottom:28px}
.footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:48px}
.footer-brand p{max-width:360px;margin-top:18px;color:var(--text-muted);font-size:14px;line-height:1.9}
.footer-title{font-size:14px;font-weight:var(--weight-bold);margin:0 0 12px}
.footer-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:4px 18px}
.footer-links a,.footer-languages a,.footer-legal a{display:inline-flex;align-items:center;min-height:28px;font-size:13px}
.footer-links a:hover,.footer-languages a:hover,.footer-legal a:hover{text-decoration:underline;text-underline-offset:3px}
.footer-languages{display:flex;flex-wrap:wrap;gap:8px 24px;padding-top:28px;margin-top:32px;border-top:1px solid var(--border)}
.footer-languages a[aria-current="page"]{font-weight:var(--weight-bold)}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:16px;margin-top:24px;font-size:12px;color:var(--text-muted)}
.footer-legal{display:flex;gap:20px}
.prose{max-width:820px;min-width:0;line-height:1.9;overflow-wrap:break-word}
.prose p,.prose ul,.prose ol,.prose pre{margin:0 0 24px}
.prose h2{margin-top:48px}
.prose h3{margin-top:32px}
.prose a:not(.btn){text-decoration:underline;text-underline-offset:3px}
.prose li + li{margin-top:8px}
.reveal{transition:opacity .35s var(--ease),transform .35s var(--ease)}
.reveal.pending{opacity:0;transform:translateY(16px)}
.reveal.shown{opacity:1;transform:none}
#server-status{position:relative;display:block;min-height:120px;width:100%;max-width:100%;overflow:hidden;margin-top:24px;margin-bottom:32px}
#server-status > *{max-width:100%;min-width:0}
#server-status + *{margin-top:24px}
@media(max-width:1180px){
  :root{--display-size:58px}
  .topbar-in{gap:20px}
  .nav li > a,.more > summary{padding-inline:10px}
}
@media(max-width:960px){
  .nav,.tools-sep{display:none}
  .menu-toggle{display:inline-flex}
  .tools{margin-left:auto}
  :root{--display-size:52px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-brand{grid-column:1 / -1}
}
@media(min-width:961px){
  .mobile-drawer,.nav-veil{display:none!important}
}
@media(max-width:768px){
  :root{--display-size:40px;--h2-size:30px;--section-space:56px}
  .grid{grid-template-columns:1fr}
}
@media(max-width:640px){
  :root{--gutter:20px;--display-size:38px;--h2-size:28px;--h3-size:21px}
  .no-break{white-space:normal}
  .tilt,[data-tilt]{transform:none}
  .section,.hero{max-width:100%;overflow-x:clip}
  .topbar-in{gap:12px}
  .tools{gap:6px;margin-left:auto}
  .lang-text{display:none}
  .lang-button{min-width:36px;padding-inline:6px}
  .lang-button .chev{display:none}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-brand{grid-column:auto}
  .panel,.card{padding:22px}
  .btn{padding-inline:18px}
  .notice-link{font-size:12px;gap:6px}
}
@media(max-width:360px){
  :root{--gutter:16px}
  .brand{gap:6px}
  .brand-word{font-size:17px}
  .brand-mark{width:26px;height:26px}
  .btn-login{padding-inline:12px;font-size:13px}
  .tools{gap:4px}
  .topbar-in{gap:6px}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition:none!important;animation:none!important}
  .reveal,.reveal.pending{opacity:1;transform:none}
}