:root{
  --bg:#F6EEDF;
  --bg-deep:#EFE4CF;
  --panel:#FFFBF4;
  --groove:#EFE5D2;
  --border:#E2D6C1;
  --accent:#2C5D8F;
  --accent-dark:#1D4166;
  --text:#2A2118;
  --muted:#6F6253;
  --success:#3E8A5A;
  --warn:#C98A12;
  --error:#BF3B2C;
  --marigold:#E3892B;
  --marigold-ink:#8C5312;
  --badge-bg:#FBE7B8;
  --badge-line:#EBC67A;
  --rose:#C46A80;
  --sage:#5E8B6B;
  --lilac:#8A72B4;
  --white:#FFFFFF;
  --flag-red:#C8363F;
  --flag-blue:#2D3E7A;
  --flag-black:#2A2320;
  --flag-gold:#E6B53B;
  --flag-white:#FFFFFF;
  --font-display:"Inter","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-body:"Inter","Noto Sans SC","PingFang SC","Hiragino Sans","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:"JetBrains Mono",ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
  --r-xs:6px;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:18px;
  --r-xl:24px;
  --r-pill:999px;
  --gutter:24px;
  --content:1200px;
  --reading:800px;
  --header-height:64px;
  --anchor-offset:80px;
  --toc-offset:144px;
  --side:300px;
  --grain:.03;
  --speed:.2s;
  --reveal-speed:.35s;
  --display-size:66px;
  --display-weight:900;
  --lift-ink:0 1px 2px color-mix(in srgb,var(--text) 7%,transparent);
  --lift-iris:0 30px 70px -26px color-mix(in srgb,var(--accent) 26%,transparent),0 60px 120px -50px color-mix(in srgb,var(--accent) 12%,transparent);
  --lift-card:inset 0 1px 0 var(--white),0 16px 48px -20px color-mix(in srgb,var(--accent) 12%,transparent);
  --paper-grain:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='p'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Cpath fill='%232A2118' filter='url(%23p)' d='M0 0h160v160H0z'/%3E%3C/svg%3E");
}
*,*::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(--font-body);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
body::before{content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;background-image:var(--paper-grain);opacity:var(--grain)}
a{color:var(--accent);text-decoration-thickness:1px;text-underline-offset:4px}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer}
button,a,summary{-webkit-tap-highlight-color:color-mix(in srgb,var(--accent) 12%,transparent)}
button{border:0}
button:disabled,[aria-disabled="true"]{cursor:not-allowed;opacity:.55}
:where(a,button,input,select,textarea,summary,[tabindex]):focus-visible{outline:2px solid var(--accent);outline-offset:3px}
[hidden]{display:none!important}
img,video{max-width:100%;height:auto}
svg{vertical-align:middle;flex-shrink:0}
main,article,section,aside,nav,div{min-width:0}
h1,h2,h3,h4,p,ul,ol,blockquote,figure{margin-top:0}
h1,h2,h3{font-family:var(--font-display);text-wrap:balance;color:var(--text)}
h1{font-size:clamp(52px,5vw,72px);font-weight:var(--display-weight);line-height:1.12;letter-spacing:-.02em;margin-bottom:24px}
h2{font-size:clamp(28px,3vw,40px);line-height:1.25;letter-spacing:-.02em;font-weight:800;margin-bottom:20px}
h3{font-size:22px;line-height:1.4;font-weight:700;margin-bottom:12px}
p{margin-bottom:20px}
li+li{margin-top:6px}
code,kbd,pre{font-family:var(--font-mono)}
code{overflow-wrap:anywhere;font-size:.9em;background:var(--groove);border-radius:var(--r-xs);padding:2px 5px}
pre{max-width:100%;overflow-x:auto;padding:20px;background:var(--groove);border:1px solid var(--border);border-radius:var(--r-md)}
pre code{padding:0;background:transparent;overflow-wrap:normal;white-space:pre}
hr{border:0;border-top:1px solid var(--border);margin:32px 0}
.wrap{width:100%;max-width:var(--content);margin-inline:auto;padding-inline:var(--gutter)}
.reading-wrap{width:100%;max-width:var(--reading);margin-inline:auto;padding-inline:var(--gutter)}
.sec{padding-top:80px;padding-bottom:80px}
.section-head{max-width:760px;margin-bottom:32px}
.section-head p,.muted{color:var(--muted)}
.kicker{font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--accent);margin-bottom:12px}
.no-break{white-space:nowrap}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap;border: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}
.card,.panel{background:var(--panel);border:1px solid var(--border);border-radius:var(--r-lg);box-shadow:var(--lift-card);padding:28px}
.groove{background:var(--groove);border-radius:var(--r-lg);padding:24px}
.icon{width:20px;height:20px;flex-shrink:0}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:48px;padding:10px 22px;border:1px solid transparent;border-radius:var(--r-sm);font-size:16px;font-weight:600;letter-spacing:-.005em;text-decoration:none;transition:transform var(--speed) ease,background-color var(--speed) ease;flex-shrink:0;white-space:nowrap;max-width:100%}
.btn svg{width:18px;height:18px;flex-shrink:0}
.btn-primary,.btn--solid{background:var(--text);color:var(--panel);box-shadow:inset 0 1px 0 color-mix(in srgb,var(--white) 14%,transparent),0 12px 26px -12px color-mix(in srgb,var(--text) 55%,transparent)}
.btn-primary:hover,.btn--solid:hover{transform:translateY(-1px)}
.btn-secondary{background:var(--panel);border-color:var(--border);color:var(--text)}
.btn-secondary:hover{background:var(--groove)}
.btn--ghost{background:transparent;color:var(--text)}
.btn--ghost:hover{background:color-mix(in srgb,var(--panel) 65%,transparent)}
.btn:active{transform:translateY(0)}
.btn-small{min-height:36px;font-size:14px;padding:6px 14px}
.ctas{margin-top:26px;display:flex;align-items:center;justify-content:center;gap:10px;flex-wrap:wrap}
.badge{display:inline-flex;align-items:center;gap:8px;min-height:32px;padding:5px 15px 5px 10px;border-radius:var(--r-pill);background:var(--badge-bg);border:1px solid var(--badge-line);color:var(--marigold-ink);font-size:13px;font-weight:600;letter-spacing:.01em;box-shadow:inset 0 1px 0 color-mix(in srgb,var(--white) 70%,transparent),0 8px 18px -12px color-mix(in srgb,var(--marigold) 45%,transparent);max-width:100%}
.badge svg{width:16px;height:16px}
.tag{display:inline-flex;align-items:center;min-height:24px;padding:3px 9px;border-radius:var(--r-xs);background:var(--groove);color:var(--text);font-size:12px;max-width:100%;overflow:hidden;overflow-wrap:anywhere}
.reveal{transition:opacity var(--reveal-speed) ease,transform var(--reveal-speed) ease}
.reveal.pending{opacity:0;transform:translateY(16px)}
.reveal.shown{opacity:1;transform:none}
#server-status{position:relative;display:block;min-height:120px;max-width:100%;overflow:hidden;margin-block:24px}
#server-status+*{margin-top:24px}

/* Shared navigation; the drawer is outside the top bar. */
#site-header,.nav-wrap{position:relative;z-index:60}
.nav{width:min(1296px,calc(100% - 48px));height:var(--header-height);margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:nowrap;position:relative;z-index:63}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;color:var(--text);text-decoration:none}
.brand img{display:block;width:30px;height:30px;filter:drop-shadow(0 4px 8px color-mix(in srgb,var(--accent) 22%,transparent))}
.brand-word{font-family:var(--font-display);font-weight:800;font-size:19px;letter-spacing:-.025em;color:var(--text)}
.desktop-nav{flex:1;min-width:0;display:flex;justify-content:center}
.menu{display:flex;align-items:center;list-style:none;margin:0;padding:4px;gap:2px;border-radius:var(--r-pill);background:color-mix(in srgb,var(--panel) 52%,transparent);border:1px solid color-mix(in srgb,var(--border) 75%,transparent)}
.menu li{margin:0}
.menu a{display:flex;align-items:center;justify-content:center;min-height:34px;padding:6px 14px;border-radius:var(--r-pill);font-size:14px;font-weight:500;color:var(--muted);text-decoration:none;white-space:nowrap;transition:color var(--speed) ease,background-color var(--speed) ease}
.menu a:hover{color:var(--text)}
.menu a[aria-current="page"]{background:var(--panel);color:var(--text);font-weight:600;box-shadow:inset 0 0 0 1px var(--border),var(--lift-ink),0 6px 16px -8px color-mix(in srgb,var(--accent) 24%,transparent)}
.tools{display:flex;align-items:center;gap:8px;flex-shrink:0}
.language{position:relative}
.lang{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:36px;width:auto;min-width:44px;padding:0 12px;border:0;border-radius:var(--r-sm);background:transparent;color:var(--muted);font-size:14px;cursor:pointer;white-space:nowrap}
.lang span{white-space:nowrap}
.lang:hover{color:var(--text);background:color-mix(in srgb,var(--panel) 60%,transparent)}
.lang svg{width:16px;height:16px}
.language-panel{position:absolute;right:0;top:calc(100% + 8px);z-index:80;min-width:180px;padding:6px;background:var(--panel);border:1px solid var(--border);border-radius:var(--r-md);box-shadow:var(--lift-iris)}
.language-panel a{display:flex;align-items:center;min-height:44px;padding:8px 12px;border-radius:var(--r-sm);color:var(--muted);text-decoration:none}
.language-panel a:hover,.language-panel a[aria-current="true"]{background:var(--groove);color:var(--text)}
.login{display:inline-flex;align-items:center;justify-content:center;min-height:36px;padding:0 18px;border-radius:var(--r-sm);background:var(--text);color:var(--panel);font-size:14px;font-weight:600;text-decoration:none;white-space:nowrap;box-shadow:inset 0 1px 0 color-mix(in srgb,var(--white) 14%,transparent),0 6px 14px -8px color-mix(in srgb,var(--text) 50%,transparent);transition:transform var(--speed) ease}
.login:hover{transform:translateY(-1px)}
.hamburger{display:none;align-items:center;justify-content:center;min-width:44px;min-height:44px;border:1px solid var(--border);border-radius:var(--r-sm);background:var(--panel);color:var(--text)}
.hamburger svg{display:block;width:20px;height:20px}
.drawer{position:fixed;z-index:62;top:var(--header-height);right:0;width:min(380px,100%);height:calc(100dvh - var(--header-height));max-height:calc(100dvh - var(--header-height));overflow-y:auto;overscroll-behavior:contain;padding:16px var(--gutter) 32px;background:var(--panel);border-left:1px solid var(--border)}
.drawer a{display:flex;align-items:center;width:100%;min-height:44px;padding:12px 16px;color:var(--muted);text-decoration:none;border-radius:var(--r-sm)}
.drawer a:hover,.drawer a[aria-current="page"],.drawer a[aria-current="true"]{background:var(--groove);color:var(--text)}
.drawer-languages{border-top:1px solid var(--border);margin-top:16px;padding-top:16px}
.veil{position:fixed;z-index:61;inset:var(--header-height) 0 0;background:color-mix(in srgb,var(--text) 24%,transparent);cursor:pointer}
html.nav-open{overflow:hidden}
.site-footer{position:relative;padding-top:64px;padding-bottom:24px;background:var(--groove);border-top:1px solid var(--border)}
.footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:40px}
.footer-brand p{max-width:340px;color:var(--muted);font-size:14px;margin-top:16px}
.footer-title{font-size:14px;font-weight:700;margin-bottom:14px}
.footer-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:4px 16px}
.footer-links a,.footer-languages a,.footer-bottom a{display:inline-flex;align-items:center;min-height:28px;color:var(--muted);font-size:14px;text-decoration:none}
.footer-links a:hover,.footer-languages a:hover,.footer-bottom a:hover{color:var(--accent)}
.footer-languages{display:flex;flex-wrap:wrap;gap:8px 20px;margin-top:32px;padding-top:24px;border-top:1px solid var(--border)}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;margin-top:20px;font-size:13px;color:var(--muted)}
.footer-legal{display:flex;gap:20px;flex-wrap:wrap}
.prose{line-height:1.85;overflow-wrap:anywhere}
.prose h2{margin-top:48px}
.prose h3{margin-top:32px}
.prose a{overflow-wrap:anywhere}
.prose li{padding-left:4px}
@media(min-width:1101px) and (max-width:1350px){
  .nav{gap:14px}.menu a{padding-inline:9px;font-size:13px}.lang{padding-inline:8px}
}
@media(max-width:1100px){
  .desktop-nav{display:none}
  .tools{margin-left:auto}
  .hamburger{display:inline-flex}
  .nav{gap:12px}
}
@media(min-width:1101px){.drawer,.veil{display:none!important}}
@media(max-width:768px){
  h1{font-size:clamp(28px,7vw,38px);line-height:1.15}
  h2{font-size:28px}
  .sec{padding-top:56px;padding-bottom:56px}
  .grid-three{grid-template-columns:minmax(0,1fr)}
  .grid-five{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:28px}
}
@media(max-width:640px){
  :root{--gutter:16px}
  .no-break{white-space:normal}
  .nav{width:calc(100% - 32px);gap:8px}
  .tools{gap:4px;margin-left:auto}
  .brand{gap:7px}
  .brand-word{font-size:17px}
  .brand img{width:27px;height:27px}
  .lang{padding-inline:6px;font-size:12px;gap:4px}
  .login{padding-inline:12px}
  .card,.panel{padding:22px}
  .tilt,[data-tilt]{transform:none}
}
@media(max-width:360px){
  .brand-word{font-size:15px}.brand img{width:24px;height:24px}
  .lang{font-size:11px;padding-inline:3px}.lang svg{width:13px;height:13px}
  .login{padding-inline:9px;font-size:13px}.nav{gap:5px}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
  .reveal,.reveal.pending{opacity:1;transform:none}
}