:root {
  color-scheme: light;
  --bg:#F8F2E7;
  --bg-panel:#FFFDF8;
  --bg-panel-2:#F1E7D6;
  --border:#E6D9C3;
  --line-strong:#CDBDA3;
  --groove-hover:#EADDC7;
  --accent:#D8521E;
  --accent-2:#E46A34;
  --accent-dark:#A83A12;
  --accent-soft:#F0A27C;
  --on-accent:#FFFDF8;
  --text:#2A2018;
  --text-muted:#75675A;
  --ink:#3A2A1E;
  --success:#2F8A57;
  --warn:#C98A16;
  --error:#C23B2E;
  --hero-top:#FBF6EC;
  --hero-bottom:#F2E8D7;
  --apricot:#F2C094;
  --apricot-l:#F9E1C8;
  --sky:#A9CCDC;
  --sky-tint:#DCEBF1;
  --sky-ink:#2E5A70;
  --moss:#97B282;
  --moss-tint:#E1EAD3;
  --moss-ink:#3E5A30;
  --lav:#BBAED7;
  --lav-tint:#E9E3F3;
  --lav-ink:#54457A;
  --slip:#FBF0DA;
  --flag-red:#C8372D;
  --flag-white:#FFFDF8;
  --flag-blue:#2D4A8A;
  --flag-black:#2A2018;
  --flag-gold:#E5B33C;
  --flag-ring:rgba(42,32,24,.14);
  --hl:rgba(255,255,255,.88);
  --edge-hi:rgba(255,255,255,.96);
  --card-line:rgba(214,196,168,.62);
  --ground:rgba(42,32,24,.12);
  --blush:rgba(216,82,30,.24);
  --tape:rgba(169,204,220,.58);
  --glow-sky:rgba(169,204,220,.42);
  --glow-apricot:rgba(242,192,148,.46);
  --mascot-drop:rgba(168,58,18,.16);
  --veil:rgba(42,32,24,.3);
  --clear:transparent;
  --shadow-warm:0 34px 70px -28px rgba(216,82,30,.22),0 14px 40px -18px rgba(216,82,30,.10);
  --shadow-pill:0 8px 18px -12px rgba(216,82,30,.30);
  --shadow-route:0 8px 16px -10px rgba(216,82,30,.32);
  --shadow-btn:0 12px 24px -12px rgba(216,82,30,.62),inset 0 1px 0 rgba(255,255,255,.30);
  --shadow-slip:0 12px 22px -14px rgba(168,58,18,.42);
  --shadow-top:0 -18px 40px -26px rgba(216,82,30,.20);
  --groove-inset:inset 0 1px 3px rgba(117,103,90,.16);
  --radius-xl:28px;
  --radius-lg:20px;
  --radius-md:16px;
  --radius-sm:6px;
  --radius-xs:2px;
  --radius-pill:999px;
  --radius-circle:50%;
  --radius-tag:16px 12px 12px 5px;
  --radius-peek:44px 44px 0 0;
  --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,sans-serif;
  --font-mono:"JetBrains Mono",ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
  --weight-body:400;
  --weight-medium:600;
  --weight-bold:700;
  --gutter:32px;
  --wrap:1200px;
  --header-height:72px;
  --anchor-offset:92px;
  --toc-offset:152px;
  --ease:.2s;
  --reveal-time:.35s;
  --grain:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='180' height='180'><filter id='g'><feTurbulence type='fractalNoise' baseFrequency='.92' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 .17 0 0 0 0 .12 0 0 0 0 .08 0 0 0 1 0'/></filter><rect width='100%' height='100%' filter='url(%23g)'/></svg>");
  --grain-opacity:.03;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-padding-top:var(--anchor-offset);scroll-behavior:smooth}
html.nav-open{overflow:hidden}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font-body);font-size:16px;font-weight:var(--weight-body);line-height:1.6;-webkit-font-smoothing:antialiased}
body::after{content:"";position:fixed;inset:0;pointer-events:none;background-image:var(--grain);opacity:var(--grain-opacity);mix-blend-mode:multiply;z-index:50}
a{color:inherit;text-underline-offset:.2em}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer}
button:disabled{cursor:not-allowed}
img{max-width:100%;height:auto}
svg{flex-shrink:0}
[hidden]{display:none!important}
:where(a,button,input,select,textarea,summary,[tabindex]):focus-visible{outline:2px solid var(--accent);outline-offset:3px}
h1,h2,h3{font-family:var(--font-display);font-weight:var(--weight-bold);text-wrap:balance}
h1{font-size:clamp(52px,5vw,68px);line-height:1.12;letter-spacing:-.02em;margin:0 0 24px}
h2{font-size:clamp(28px,3vw,40px);line-height:1.25;letter-spacing:-.02em;margin:0 0 24px}
h3{font-size:22px;line-height:1.4;margin:0 0 12px}
p{margin:0}
p+p{margin-top:16px}
ul,ol{padding-left:1.5em}
pre{max-width:100%;overflow-x:auto;padding:20px;background:var(--bg-panel-2);border-radius:var(--radius-md)}
code{font-family:var(--font-mono);font-size:.9em;overflow-wrap:anywhere}
pre code{overflow-wrap:normal;white-space:pre}
.no-break{white-space:nowrap}
.wrap{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:var(--gutter)}
.section{padding-top:80px;padding-bottom:80px}
.section-head{text-align:center;max-width:800px;margin:0 auto 40px}
.section-head p,.muted{color:var(--text-muted)}
.lede{font-size:20px;color:var(--text-muted)}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums}
.prose{max-width:820px;margin-inline:auto;overflow-wrap:anywhere}
.prose h2{margin-top:48px}
.prose h3{margin-top:32px}
.prose li+li{margin-top:8px}
.prose img{border-radius:var(--radius-lg)}
.prose blockquote{margin:24px 0;padding:20px 24px;border-left:3px solid var(--moss);background:var(--moss-tint);border-radius:var(--radius-sm)}
.panel,.card{background:var(--bg-panel);border-radius:var(--radius-xl);padding:28px;box-shadow:inset 0 1px 0 var(--edge-hi),0 0 0 1px var(--card-line),var(--shadow-warm)}
.panel-groove{background:var(--bg-panel-2);border-radius:var(--radius-lg);padding:20px;box-shadow:var(--groove-inset)}
.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.grid>*{min-width:0}
.stack{display:grid;gap:24px}
.actions{display:flex;flex-wrap:wrap;align-items:center;gap:12px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:10px 24px;border:0;border-radius:var(--radius-pill);text-decoration:none;font-family:var(--font-body);font-weight:var(--weight-bold);font-size:15px;line-height:1.4;white-space:nowrap;flex-shrink:0;transition:background-color var(--ease),box-shadow var(--ease)}
.btn svg{width:16px;height:16px}
.btn-primary{color:var(--on-accent);background:linear-gradient(180deg,var(--accent-2),var(--accent));box-shadow:var(--shadow-btn)}
.btn-primary:hover,.btn-primary.is-hover{background:var(--accent-dark)}
.btn-soft,.btn-secondary{color:var(--text);background:var(--bg-panel-2);box-shadow:inset 0 0 0 1px var(--card-line)}
.btn-soft:hover,.btn-secondary:hover{background:var(--groove-hover)}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.55;pointer-events:none}
.btn.is-focus{outline:2px solid var(--accent);outline-offset:3px}
.reveal{transition:opacity var(--reveal-time),transform var(--reveal-time)}
.reveal.pending{opacity:0;transform:translateY(16px)}
.reveal.shown{opacity:1;transform:none}
#server-status{position:relative;display:block;min-height:240px;max-width:100%;overflow:hidden;margin-block:24px 32px}
#server-status>*{min-width:0;max-width:100%}
#server-status+*{margin-top:32px}
.counter{display:inline-block;min-width:3ch;text-align:right;font-family:var(--font-mono);font-variant-numeric:tabular-nums}
.stage{position:relative;overflow-x:clip;max-width:100%;background:linear-gradient(180deg,var(--hero-top) 0%,var(--bg) 46%,var(--hero-bottom) 100%)}
.decor-section{position:relative;overflow-x:clip}
.glow{position:absolute;border-radius:var(--radius-circle);pointer-events:none;aspect-ratio:1/1}
.glow-sky{top:6%;left:-7%;width:36%;background:radial-gradient(closest-side,var(--glow-sky),var(--clear))}
.glow-apricot{top:38%;right:-5%;width:32%;background:radial-gradient(closest-side,var(--glow-apricot),var(--clear))}
.topbar,#site-header{position:relative;z-index:70}
.topbar-inner{max-width:1280px;margin:0 auto;height:var(--header-height);padding:0 40px;display:flex;align-items:center;gap:24px;position:relative;z-index:74}
.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;flex-shrink:0}
.brand img{width:34px;height:34px;display:block;flex-shrink:0}
.brand-word{font-family:var(--font-display);font-weight:var(--weight-bold);font-size:20px;letter-spacing:-.02em;color:var(--text);white-space:nowrap}
.mainnav{flex:1;min-width:0;display:flex;justify-content:center}
.mainnav ul{display:flex;align-items:center;list-style:none;margin:0;padding:0}
.mainnav li{display:flex;align-items:center}
.mainnav li+li::before{content:"·";margin:0 12px;color:var(--line-strong);font-weight:var(--weight-bold)}
.mainnav a{text-decoration:none;font-size:15px;color:var(--text-muted);white-space:nowrap;min-height:24px;display:inline-flex;align-items:center}
.mainnav a:hover{color:var(--text)}
.mainnav a[aria-current="page"]{color:var(--accent);font-weight:var(--weight-medium)}
.topbar-tools{display:flex;align-items:center;gap:16px;flex-shrink:0}
.language{position:relative}
.lang-button{border:0;background:var(--clear);display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:6px 0;min-height:32px;min-width:24px;width:auto;font-size:14px;color:var(--text-muted)}
.lang-button span{white-space:nowrap}
.lang-button svg{width:15px;height:15px}
.language-panel{position:absolute;right:0;top:calc(100% + 8px);z-index:90;min-width:160px;padding:8px;border-radius:var(--radius-md);background:var(--bg-panel);box-shadow:0 0 0 1px var(--border),var(--shadow-warm)}
.language-panel a{display:flex;align-items:center;min-height:44px;padding:8px 12px;text-decoration:none;border-radius:var(--radius-sm)}
.language-panel a:hover{background:var(--bg-panel-2)}
.language-panel a[aria-current="true"]{color:var(--accent)}
.btn-login{height:38px;min-height:38px;padding:0 18px;background:var(--bg-panel);color:var(--text);font-size:14px;font-weight:var(--weight-medium);box-shadow:inset 0 0 0 1px var(--card-line),inset 0 1px 0 var(--edge-hi),var(--shadow-pill)}
.btn-login:hover{box-shadow:inset 0 0 0 1px var(--line-strong),var(--shadow-pill)}
.menu-toggle{display:none;align-items:center;justify-content:center;flex-direction:column;gap:4px;min-width:44px;min-height:44px;padding:10px;border:0;border-radius:var(--radius-pill);color:var(--text);background:var(--bg-panel-2)}
.menu-line{display:block;width:20px;height:2px;background:currentColor;border-radius:var(--radius-xs)}
.nav-veil{position:fixed;inset:var(--header-height) 0 0;z-index:71;background:var(--veil);border:0}
.mobile-drawer{position:fixed;top:var(--header-height);right:0;left:0;height:calc(100dvh - var(--header-height));max-height:calc(100dvh - var(--header-height));z-index:72;background:var(--bg-panel);padding:16px var(--gutter) 32px;overflow-y:auto;overscroll-behavior:contain}
.mobile-drawer a{display:flex;width:100%;align-items:center;min-height:44px;padding:12px 8px;text-decoration:none;border-bottom:1px solid var(--border)}
.mobile-drawer a[aria-current]{color:var(--accent)}
.drawer-languages{margin-top:24px;border-top:1px solid var(--border)}
.site-footer{background:var(--bg-panel-2);border-radius:var(--radius-peek);padding-top:56px;padding-bottom:24px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px}
.footer-grid>*{min-width:0}
.footer-brand p{color:var(--text-muted);max-width:340px;margin-top:16px}
.footer-title{font-size:16px;margin:0 0 16px;font-weight:var(--weight-bold)}
.footer-links{list-style:none;margin:0;padding:0;display:grid;gap:4px}
.footer-links a{display:inline-flex;align-items:center;min-height:32px;text-decoration:none;color:var(--text-muted)}
.footer-links a:hover{color:var(--text)}
.footer-languages{display:flex;flex-wrap:wrap;gap:8px 20px;margin-top:32px;padding-top:24px;border-top:1px solid var(--border)}
.footer-languages a{display:inline-flex;align-items:center;min-height:32px;text-decoration:none}
.footer-languages a[aria-current="true"]{color:var(--accent)}
.footer-bottom{display:flex;flex-wrap:wrap;gap:12px 24px;align-items:center;justify-content:space-between;border-top:1px solid var(--border);margin-top:24px;padding-top:24px;font-size:13px;color:var(--text-muted)}
.footer-legal{display:flex;flex-wrap:wrap;gap:16px}
.footer-legal a{min-height:24px;display:inline-flex;align-items:center}
.sk{stroke:var(--ink);stroke-linecap:round;stroke-linejoin:round}
.w1{stroke-width:1.5}
.w2{stroke-width:2}
.w3{stroke-width:2.6}
.nf{fill:none}
.soft{opacity:.42}
.f-apricot{fill:var(--apricot)}
.f-apricot-l{fill:var(--apricot-l)}
.f-accent-soft{fill:var(--accent-soft)}
.f-moss{fill:var(--moss)}
.f-sky{fill:var(--sky)}
.f-lav{fill:var(--lav)}
.f-paper{fill:var(--bg-panel)}
.f-ink{fill:var(--ink)}
.f-hl{fill:var(--hl)}
.f-blush{fill:var(--blush)}
.f-ground{fill:var(--ground)}
.hl-line{fill:none;stroke:var(--hl);stroke-width:3;stroke-linecap:round}
.dash{stroke-dasharray:2 3}
.fl-red{fill:var(--flag-red)}
.fl-white{fill:var(--flag-white)}
.fl-blue{fill:var(--flag-blue)}
.fl-black{fill:var(--flag-black)}
.fl-gold{fill:var(--flag-gold)}
@media(max-width:1180px){
  .topbar-inner{padding:0 28px;gap:16px}
  .mainnav li+li::before{margin:0 8px}
  .mainnav a{font-size:14px}
  .topbar-tools{gap:12px}
}
@media(max-width:1080px){
  .mainnav{display:none}
  .topbar-tools{margin-left:auto}
  .menu-toggle{display:inline-flex}
}
@media(min-width:1081px){
  .mobile-drawer,.nav-veil{display:none!important}
}
@media(max-width:768px){
  :root{--gutter:20px;--header-height:68px;--anchor-offset:84px;--toc-offset:144px}
  h1{font-size:38px}
  h2{font-size:28px}
  .section{padding-top:56px;padding-bottom:56px}
  .grid{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .footer-brand{grid-column:1/-1}
  .topbar-inner{padding:0 20px;gap:12px;flex-wrap:nowrap}
  .topbar-tools{margin-left:auto;gap:8px}
  .lang-button{font-size:13px}
  .lang-button>svg{display:none}
}
@media(max-width:640px){
  .no-break{white-space:normal}
  .tilt,.slip{transform:none!important}
  .glow,.decor-section>*[aria-hidden="true"]{max-width:100%}
  .wrap{padding-inline:var(--gutter)}
  h1{font-size:34px}
  .panel,.card{padding:24px}
}
@media(max-width:380px){
  :root{--gutter:16px}
  .topbar-inner{padding-inline:16px;gap:8px}
  .brand{gap:6px}
  .brand img{width:28px;height:28px}
  .brand-word{font-size:17px}
  .topbar-tools{gap:4px}
  .btn-login{padding-inline:12px}
  .lang-button{font-size:12px}
  .footer-grid{grid-template-columns:minmax(0,1fr)}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
  .reveal,.reveal.pending{opacity:1;transform:none}
}