:root{
  --bg:#FBF3E6;--bg-panel:#FFFBF4;--bg-panel-2:#F3E7D3;--border:#E7D7BF;
  --accent:#8A24E8;--accent-dark:#4F1491;--text:#2A1C14;--text-muted:#6F5C4B;--text-faint:#9A8572;
  --success:#2F8F4E;--warn:#C27A12;--error:#C2342B;
  --lilac-100:#E9DAFB;--lilac-mid:#F3E5F4;--lilac-bar:#E3D0FA;--lime:#C8F04A;--on-accent:#FFFFFF;
  --flag-red:#D7263D;--flag-white:#FFFFFF;--flag-blue:#1F3A8A;
  --accent-rgb:138 36 232;--accent-dark-rgb:79 20 145;--text-rgb:42 28 20;--panel-rgb:255 251 244;
  --white-rgb:255 255 255;--peach-rgb:245 168 132;--border-rgb:231 215 191;
  --font-display:'Inter','Noto Sans SC','PingFang SC','Hiragino Sans','Apple SD Gothic Neo','Microsoft YaHei',system-ui,sans-serif;
  --font-body:'Inter','Noto Sans SC','PingFang SC','Hiragino Sans','Apple SD Gothic Neo','Microsoft YaHei',system-ui,-apple-system,'Segoe UI',sans-serif;
  --font-mono:'JetBrains Mono',ui-monospace,'SFMono-Regular',Menlo,Consolas,monospace;
  --r-stage:40px;--r-card:24px;--r-slide:18px;--r-small:14px;--r-control:8px;--r-shell:30px;--r-shield:16px;--r-mobile-stage:28px;--r-pill:999px;--r-round:50%;
  --shadow-stage:0 40px 100px -36px rgb(var(--accent-rgb) / .12),0 1px 0 rgb(var(--white-rgb) / .7) inset;
  --shadow-prompt:0 36px 80px -14px rgb(var(--accent-rgb) / .12),0 4px 12px rgb(var(--accent-dark-rgb) / .05);
  --shadow-slide:0 28px 60px -16px rgb(var(--accent-rgb) / .10),0 8px 18px -8px rgb(var(--accent-dark-rgb) / .10);
  --gutter:24px;--content-width:1248px;--reading-width:816px;--header-height:76px;--toc-top:12px;--anchor-offset:96px;
  --weight-body:400;--weight-medium:600;--weight-strong:700;--weight-button:800;--weight-display:900;
  --size-body:16px;--size-small:14px;--size-h1:68px;--size-h2:36px;--size-h3:24px;
  --ease: cubic-bezier(.2,.65,.3,1);--time-fast:.2s;--time-reveal:.35s;
  --paper-texture:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='g'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.87' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Cpath filter='url(%23g)' opacity='.48' d='M0 0h160v160H0z'/%3E%3C/svg%3E");
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-padding-top:var(--anchor-offset);scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font-body);font-size:var(--size-body);font-weight:var(--weight-body);line-height:1.6;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
body::after{content:"";position:fixed;inset:0;pointer-events:none;z-index:60;background-color:var(--text);mask-image:var(--paper-texture);opacity:.03}
[hidden]{display:none!important}
img{display:block;max-width:100%;height:auto}
svg{flex-shrink:0}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
button{background:none;border:0;padding:0;cursor:pointer}
button:disabled,.btn[aria-disabled="true"]{opacity:.5;cursor:not-allowed}
button:disabled:hover,.btn[aria-disabled="true"]:hover{transform:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:var(--r-control)}
h1,h2,h3{font-family:var(--font-display);font-weight:var(--weight-display);line-height:1.2;text-wrap:balance;overflow-wrap:break-word}
h1{font-size:clamp(52px,5vw,var(--size-h1));line-height:1.1;letter-spacing:-.02em}
h2{font-size:var(--size-h2);letter-spacing:-.02em}
h3{font-size:var(--size-h3)}
p{margin:0 0 1em}
code{font-family:var(--font-mono);overflow-wrap:anywhere}
pre{max-width:100%;overflow-x:auto;padding:20px;border:1px solid var(--border);border-radius:var(--r-small);background:var(--bg-panel-2)}
pre code{overflow-wrap:normal;white-space:pre}
strong{font-weight:var(--weight-strong)}
.wrap{width:100%;max-width:var(--content-width);margin-inline:auto;padding-inline:var(--gutter);min-width:0}
.reading-wrap{max-width:var(--reading-width);margin-inline:auto;padding-inline:var(--gutter);min-width:0}
.sec{padding-top:72px;padding-bottom:72px}
.grid{display:grid;gap:24px}
.grid>*{min-width:0}
.grid-three{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-five{grid-template-columns:repeat(5,minmax(0,1fr))}
.row{display:flex;align-items:center;flex-wrap:wrap;gap:12px}
.row>*{min-width:0}
.muted{color:var(--text-muted)}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums}
.no-break{white-space:nowrap}
.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}
.skip-link{position:absolute;left:16px;top:-48px;z-index:180;padding:8px 14px;border-radius:var(--r-pill);background:var(--accent-dark);color:var(--on-accent);font-weight:var(--weight-strong);font-size:var(--size-small)}
.skip-link:focus{top:8px}
.panel,.card{padding:28px;border:1px solid var(--border);border-radius:var(--r-card);background:var(--bg-panel)}
.panel-sunken{background:var(--bg-panel-2)}
.prose{min-width:0;overflow-wrap:break-word}
.prose p,.prose li{line-height:1.85}
.prose h2{margin-top:2em}
.prose h3{margin-top:1.6em}
.prose a:not(.btn){color:var(--accent-dark);text-decoration:underline;text-underline-offset:3px}
.prose li+li{margin-top:8px}
.prose img{border-radius:var(--r-card)}
.reveal{transition:opacity var(--time-reveal) var(--ease),transform var(--time-reveal) var(--ease)}
.reveal.pending{opacity:0;transform:translateY(16px)}
.reveal.shown{opacity:1;transform:none}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:10px 22px;border-radius:var(--r-pill);font-family:var(--font-body);font-weight:var(--weight-button);white-space:nowrap;flex-shrink:0;transition:transform var(--time-fast) var(--ease),box-shadow var(--time-fast) var(--ease),background-color var(--time-fast) var(--ease)}
.btn svg{width:20px;height:20px;flex:none}
.btn-primary{background:linear-gradient(110deg,var(--accent),var(--accent-dark));color:var(--on-accent);box-shadow:var(--shadow-slide)}
.btn-primary:hover{transform:translateY(-2px)}
.btn-primary:active,.btn-secondary:active{transform:translateY(1px)}
.btn-secondary{background:var(--bg-panel);color:var(--accent-dark);box-shadow:inset 0 0 0 1px var(--border)}
.btn-secondary:hover{box-shadow:inset 0 0 0 1px var(--accent)}
.btn-login{height:40px;min-height:40px;padding:0 16px 0 18px;border-radius:var(--r-pill);background:var(--bg-panel);color:var(--text);font-size:14.5px;box-shadow:inset 0 0 0 1px rgb(var(--accent-rgb) / .22),0 10px 24px -14px rgb(var(--accent-rgb) / .45)}
.btn-login svg{stroke:currentColor;fill:none}
.btn-login:hover{transform:translateY(-1px);box-shadow:inset 0 0 0 1px rgb(var(--accent-rgb) / .4),0 14px 28px -14px rgb(var(--accent-rgb) / .5)}
.notice{position:relative;display:flex;align-items:center;justify-content:center;gap:12px;min-height:40px;padding:8px 56px;background:var(--lilac-bar);color:var(--text);font-size:var(--size-small);line-height:1.4}
.notice-text{margin:0}
.notice-link{display:inline-flex;align-items:center;gap:4px;min-height:24px;font-weight:var(--weight-button)}
.notice-link svg{width:16px;height:16px;transition:transform var(--time-fast) ease}
.notice-link:hover svg{transform:translateX(3px)}
.notice-close{position:absolute;right:14px;top:50%;transform:translateY(-50%);width:28px;height:28px;border-radius:var(--r-round);display:inline-flex;align-items:center;justify-content:center}
.notice-close:hover{background:rgb(var(--white-rgb) / .5)}
#site-header{position:relative;z-index:100}
.site-header{position:relative;z-index:105;display:flex;align-items:center;justify-content:space-between;gap:24px;height:var(--header-height);padding:12px 32px 0}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;font-family:var(--font-display);font-weight:var(--weight-display);font-size:19px;letter-spacing:-.02em;color:var(--text);min-height:34px}
.brand img{width:34px;height:34px;flex:none}
.brand-sub{font-weight:var(--weight-medium);color:var(--text-muted)}
.tabs{flex:1;min-width:0}
.tabs ul{position:relative;display:flex;align-items:center;justify-content:center;gap:2px;margin:0;padding:0;list-style:none}
.tabs ul::after{content:"";position:absolute;left:8px;right:8px;bottom:0;height:1px;background:rgb(var(--accent-rgb) / .14)}
.tabs li{min-width:0}
.tabs a{position:relative;display:block;padding:10px 13px 13px;font-size:14.5px;font-weight:var(--weight-medium);color:var(--text-muted);white-space:nowrap;transition:color var(--time-fast) ease}
.tabs a::after{content:"";position:absolute;left:13px;right:13px;bottom:0;height:3px;border-radius:var(--r-pill);background:linear-gradient(90deg,var(--accent),var(--accent-dark));transform:scaleX(0);transform-origin:center;opacity:0;transition:transform .25s ease,opacity .25s ease;z-index:1}
.tabs a:hover{color:var(--text)}
.tabs a:hover::after{transform:scaleX(.5);opacity:.35}
.tabs a[aria-current="page"]{color:var(--text);font-weight:var(--weight-button)}
.tabs a[aria-current="page"]::after{transform:scaleX(1);opacity:1}
.header-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.language-picker{position:relative}
.lang{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-width:44px;width:auto;height:38px;padding:0 12px;border-radius:var(--r-pill);font-size:var(--size-small);font-weight:var(--weight-medium);color:var(--text-muted)}
.lang span{white-space:nowrap}
.lang:hover{background:rgb(var(--white-rgb) / .45);color:var(--text)}
.lang svg{width:16px;height:16px;stroke:currentColor;fill:none}
.language-panel{position:absolute;right:0;top:calc(100% + 8px);z-index:130;width:196px;padding:8px;background:var(--bg-panel);border:1px solid var(--border);border-radius:var(--r-small);box-shadow:var(--shadow-prompt)}
.language-panel a{display:flex;align-items:center;min-height:44px;padding:8px 12px;border-radius:var(--r-control)}
.language-panel a:hover,.language-panel a[aria-current="true"]{background:var(--lilac-100);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;border-radius:var(--r-small);color:var(--accent-dark)}
.menu-line{display:block;width:20px;height:2px;background:currentColor}
.menu-drawer{position:fixed;top:var(--header-height);right:0;bottom:0;width:min(400px,100%);height:calc(100dvh - var(--header-height));max-height:calc(100dvh - var(--header-height));z-index:103;overflow-y:auto;overscroll-behavior:contain;background:var(--bg-panel);padding:20px var(--gutter);border-left:1px solid var(--border)}
.menu-drawer a{display:flex;align-items:center;width:100%;min-height:44px;padding:10px 14px;border-radius:var(--r-control)}
.menu-drawer a:hover,.menu-drawer a[aria-current="page"]{background:var(--lilac-100);color:var(--accent-dark)}
.drawer-languages{margin-top:16px;padding-top:16px;border-top:1px solid var(--border)}
.menu-veil{position:fixed;inset:var(--header-height) 0 0;z-index:102;background:rgb(var(--text-rgb) / .28)}
html.nav-open{overflow:hidden}
.site-footer{margin-top:48px;padding-top:56px;padding-bottom:28px;border-top:1px solid var(--border);background:var(--bg-panel-2)}
.footer-grid{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:40px}
.footer-grid>*{min-width:0}
.footer-brand p{margin-top:18px;max-width:360px;color:var(--text-muted)}
.footer-title{font-size:var(--size-body);margin:0 0 12px;font-weight:var(--weight-button)}
.footer-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:4px 16px;list-style:none;margin:0;padding:0}
.footer-links a,.footer-languages a,.footer-legal a{display:inline-flex;align-items:center;min-height:32px;padding-block:3px}
.footer-links a:hover,.footer-languages a:hover,.footer-legal a:hover{color:var(--accent-dark);text-decoration:underline;text-underline-offset:4px}
.footer-languages{display:flex;flex-wrap:wrap;gap:8px 20px;margin-top:32px}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;margin-top:20px;padding-top:20px;border-top:1px solid var(--border);font-size:var(--size-small);color:var(--text-muted)}
.footer-legal{display:flex;flex-wrap:wrap;gap:16px}
#server-status{position:relative;display:block;min-height:80px;max-width:100%;overflow:hidden;margin:24px 0}
#server-status+*{margin-top:24px}
@media(max-width:1300px) and (min-width:981px){
  .site-header{gap:14px;padding-inline:24px}
  .tabs a{padding-inline:8px;font-size:13px}
  .tabs a::after{left:8px;right:8px}
  .header-actions{gap:4px}
  .lang{padding-inline:8px}
}
@media(max-width:1180px) and (min-width:981px){
  .lang-text{display:none}
}
@media(max-width:980px){
  .site-header{height:var(--header-height);padding:12px 20px;flex-wrap:nowrap;gap:12px}
  .site-header>.tabs{display:none}
  .header-actions{margin-left:auto;gap:4px}
  .menu-toggle{display:inline-flex}
  .lang-text{display:none}
  .grid-five{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media(max-width:768px){
  :root{--size-h2:28px;--size-h3:21px;--gutter:20px}
  h1{font-size:clamp(28px,9vw,40px)}
  .sec{padding-top:48px;padding-bottom:48px}
  .grid-three,.grid-five{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr;gap:28px}
}
@media(max-width:640px){
  :root{--gutter:16px}
  .no-break{white-space:normal}
  .notice{padding:8px 44px;font-size:13px;flex-wrap:wrap;gap:2px 10px}
  .brand-sub{display:none}
  .site-header{padding-inline:14px;gap:6px}
  .brand{font-size:16px;gap:6px}
  .brand img{width:30px;height:30px}
  .header-actions{gap:2px}
  .btn-login{padding-inline:12px;font-size:13px}
  .btn-login svg{display:none}
  .lang{padding-inline:8px}
  .grid-three,.grid-five{grid-template-columns:minmax(0,1fr)}
  .panel,.card{padding:22px}
  .tilt,.decorative-tilt,[data-tilt]{transform:none}
  .spot,.decoration{max-width:100%}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal,.reveal.pending{opacity:1;transform:none;transition:none}
  *,*::before,*::after{animation:none!important;transition-duration:.01ms!important}
}