:root{
  color-scheme:light;
  --bg:#F7F5F2;
  --bg-panel:#FFFFFF;
  --bg-panel-2:#EFECE7;
  --border:#E2DDD5;
  --accent:#BE3A3A;
  --accent-2:#D9614A;
  --accent-dark:#932A2C;
  --text:#231F1C;
  --text-muted:#6B635C;
  --success:#2E8456;
  --warn:#C1861A;
  --error:#B3261E;
  --font-display:'Iowan Old Style','Palatino Linotype',Palatino,'Songti SC','Noto Serif SC','STSong','SimSun',Georgia,serif;
  --font-body:'Inter','Noto Sans SC','PingFang SC','Hiragino Sans GB','Microsoft YaHei',system-ui,sans-serif;
  --font-mono:'JetBrains Mono','SFMono-Regular',Menlo,Consolas,'Liberation Mono',monospace;
  --radius:6px;
  --radius-focus:4px;
  --radius-pill:999px;
  --radius-round:50%;
  --bar-h:72px;
  --peek-h:28px;
  --gutter:24px;
  --wrap:1200px;
  --toc-h:64px;
  --anchor-gap:calc(var(--bar-h) + var(--toc-h) + 16px);
  --space-1:8px;
  --space-2:16px;
  --space-3:24px;
  --space-4:32px;
  --space-6:48px;
  --space-8:64px;
  --space-12:96px;
  --tint-5:rgba(190,58,58,.05);
  --tint-6:rgba(190,58,58,.06);
  --glow-0:rgba(247,245,242,0);
  --glow-1:rgba(247,245,242,.84);
  --glow-2:rgba(247,245,242,.92);
  --veil:rgba(35,31,28,.28);
  --edge-hi:inset 0 1px 0 rgba(255,255,255,.95);
  --shadow-tint:0 22px 52px -18px rgba(190,58,58,.10),0 2px 8px rgba(35,31,28,.06);
  --shadow-chip:0 6px 16px -8px rgba(190,58,58,.18);
  --shadow-bar:0 1px 0 rgba(35,31,28,.04),0 8px 24px -16px rgba(35,31,28,.18);
  --btn-hi:inset 0 1px 0 rgba(255,255,255,.28);
  --btn-shadow:0 12px 26px -10px rgba(190,58,58,.50);
  --float-shadow:0 14px 30px -12px rgba(35,31,28,.45);
  --focus-ring:0 0 0 3px rgba(190,58,58,.22);
  --wall-1:#F4EDE3;
  --wall-2:#EADFD1;
  --light:#FFFBF3;
  --oak-1:#E8D2AE;
  --oak-2:#D7B68A;
  --oak-3:#BF9865;
  --oak-4:#9C7547;
  --oak-hi:#F7E9D0;
  --alu-1:#F1EFEB;
  --alu-2:#D3CFC9;
  --alu-3:#B7B1A9;
  --bezel:#2A2623;
  --paper-1:#FFFDF8;
  --paper-2:#EFE7DA;
  --twine:#B29878;
  --brass-1:#E6C886;
  --brass-2:#B58C42;
  --brass-hi:#FBEBC4;
  --brass-ink:#5A3E16;
  --book-1:#DCD2C5;
  --book-2:#C8BAA8;
  --book-3:#9A8C7D;
  --mount-1:#DAD5CE;
  --mount-2:#C4BEB6;
  --mount-3:#ABA49B;
  --dot-1:#D9D3CB;
  --dot-2:#CDC6BD;
  --dot-3:#C1B9AF;
  --flag-red:#C8333B;
  --flag-navy:#2D3A6B;
  --flag-white:#FBFAF7;
  --flag-edge:rgba(35,31,28,.16);
  --ease-time:.2s;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-padding-top:calc(var(--bar-h) + 16px);scroll-behavior:smooth}
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}
img,svg{vertical-align:middle;max-width:100%}
img{height:auto}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer}
a{color:inherit;text-underline-offset:.2em}
button,a,summary{touch-action:manipulation}
:where(a,button,input,select,textarea,summary,[tabindex]):focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:var(--radius-focus)}
[hidden]{display:none!important}
h1,h2,h3{font-family:var(--font-display);font-weight:400;line-height:1.2;text-wrap:balance;overflow-wrap:break-word}
h1{font-size:clamp(52px,4.4vw,64px);line-height:1.12;letter-spacing:-.02em;margin:0 0 24px}
h2{font-size:clamp(28px,3vw,40px);letter-spacing:-.015em;margin:0 0 24px}
h3{font-size:24px;margin:0 0 16px}
p{margin:0 0 20px}
ul,ol{padding-inline-start:24px}
code{font-family:var(--font-mono);font-size:.88em;overflow-wrap:anywhere}
pre{max-width:100%;overflow-x:auto;padding:24px;background:var(--bg-panel-2);border:1px solid var(--border);border-radius:var(--radius)}
pre code{white-space:pre;overflow-wrap:normal}
hr{border:0;border-top:1px solid var(--border);margin-block:32px}
.no-break{white-space:nowrap}
.wrap{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:var(--gutter)}
.section{padding-top:var(--space-12);padding-bottom:var(--space-12)}
.section-soft{background:linear-gradient(to bottom,var(--tint-6),var(--bg) 320px);overflow-x:clip}
.section-head{max-width:760px;margin-bottom:40px}
.grid{display:grid;gap:24px}
.grid>*{min-width:0}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.panel,.card{min-width:0;background:var(--bg-panel);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--edge-hi),var(--shadow-tint);padding:32px}
.recess{background:var(--bg-panel-2);border-radius:var(--radius);padding:24px;min-width:0}
.muted{color:var(--text-muted)}
.mono,.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums}
.small{font-size:13px}
.stop{display:inline-block;width:.17em;height:.17em;margin-left:.08em;border-radius:var(--radius-round);background:var(--accent)}
.skip{position:absolute;left:-9999px;top:8px;z-index:100;background:var(--bg-panel);padding:8px 14px;border:1px solid var(--border);border-radius:var(--radius)}
.skip:focus{left:16px}
.btn,.btn-login{display:inline-flex;align-items:center;justify-content:center;text-align:center;text-decoration:none;border-radius:var(--radius);font-weight:600;flex-shrink:0;white-space:nowrap;transition:transform var(--ease-time) ease,box-shadow var(--ease-time) ease}
.btn{height:52px;min-width:156px;padding:0 30px;font-size:16px;letter-spacing:.02em;border:1.5px solid transparent}
.btn:hover,.btn-login:hover{transform:translateY(-1px)}
.btn:active,.btn-login:active{transform:translateY(0)}
.btn-primary{color:var(--bg-panel);background:linear-gradient(135deg,var(--accent-2) 0%,var(--accent) 62%,var(--accent-dark) 140%);box-shadow:var(--btn-hi),var(--btn-shadow)}
.btn-ghost,.btn-secondary,.btn-login{color:var(--accent);background:var(--bg-panel);border:1.5px solid var(--accent);box-shadow:var(--edge-hi)}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.55;cursor:not-allowed;transform:none;box-shadow:none}
.btn-small{height:40px;min-width:0;padding-inline:18px;font-size:14px}
.cta-row{display:flex;flex-wrap:wrap;justify-content:center;gap:16px;margin:0 0 20px}
.topbar,#site-header{position:sticky;top:0;z-index:60;min-height:var(--bar-h)}
.topbar{height:var(--bar-h);background:var(--bg-panel);border-bottom:1px solid var(--border);box-shadow:var(--shadow-bar)}
#site-header>.topbar{position:relative}
.topbar-in{max-width:1320px;height:100%;margin:0 auto;padding:0 40px;display:flex;align-items:center;gap:40px;flex-wrap:nowrap}
.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;color:var(--text);flex:none;min-height:44px}
.brand-mark{width:34px;height:34px;display:block;flex-shrink:0}
.brand-word{font-size:20px;font-weight:650;letter-spacing:-.01em;white-space:nowrap}
.mainnav{flex:1;min-width:0}
.mainnav ul{display:flex;align-items:center;list-style:none;margin:0;padding:0}
.mainnav li{display:flex;align-items:center;font-size:15px;flex-shrink:0}
.mainnav li+li::before{content:"·";color:var(--text-muted);margin:0 12px;opacity:.7;flex-shrink:0}
.mainnav a{display:inline-flex;align-items:center;min-height:32px;text-decoration:none;padding:6px 0;text-underline-offset:7px;text-decoration-thickness:1.5px;white-space:nowrap}
.mainnav a:hover{text-decoration:underline;text-decoration-color:var(--border)}
.mainnav a[aria-current="page"]{text-decoration:underline;text-decoration-color:var(--text)}
.topbar-act{margin-left:auto;display:flex;align-items:center;gap:22px;flex-shrink:0}
.btn-login{height:38px;padding:0 20px;font-size:14.5px}
.lang-wrap{position:relative}
.lang{display:inline-flex;align-items:center;justify-content:center;gap:6px;background:none;border:0;padding:6px 0;font:inherit;font-size:14px;color:var(--text-muted);cursor:pointer;min-height:44px;min-width:44px;width:auto}
.lang span{white-space:nowrap}
.lang svg{width:16px;height:16px;flex-shrink:0}
.lang-panel{position:absolute;top:calc(100% + 8px);right:0;z-index:85;min-width:180px;padding:8px;background:var(--bg-panel);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-tint)}
.lang-panel a{display:flex;align-items:center;min-height:44px;padding:8px 12px;text-decoration:none}
.lang-panel a:hover,.lang-panel a[aria-current="true"]{background:var(--bg-panel-2)}
.menu-toggle{display:none;min-width:44px;min-height:44px;align-items:center;justify-content:center;border:1px solid var(--border);background:var(--bg-panel);border-radius:var(--radius)}
.menu-toggle svg{display:block;width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.7}
.nav-drawer{position:fixed;top:var(--bar-h);right:0;bottom:0;width:min(100%,400px);height:calc(100dvh - var(--bar-h));max-height:calc(100dvh - var(--bar-h));z-index:72;background:var(--bg-panel);padding:16px 24px 32px;overflow-y:auto;overscroll-behavior:contain;border-left:1px solid var(--border)}
.nav-drawer a{display:flex;width:100%;align-items:center;min-height:44px;padding:12px 8px;text-decoration:none;border-bottom:1px solid var(--border)}
.nav-drawer a[aria-current="page"]{font-weight:600;background:var(--bg-panel-2)}
.drawer-label{margin:24px 8px 8px;font-size:13px;color:var(--text-muted)}
.nav-veil{position:fixed;inset:var(--bar-h) 0 0;z-index:65;background:var(--veil);border:0;width:100%}
html.nav-open{overflow:hidden}
.site-footer{border-top:1px solid var(--border);background:var(--bg-panel-2);padding-top:64px;padding-bottom:32px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:48px}
.footer-grid>*{min-width:0}
.footer-intro{max-width:320px;margin-top:20px;color:var(--text-muted)}
.footer-title{font-family:var(--font-body);font-size:14px;font-weight:600;margin:0 0 16px}
.footer-links{display:flex;flex-wrap:wrap;gap:8px 20px;list-style:none;margin:0;padding:0}
.footer-links a{display:inline-flex;align-items:center;min-height:32px;text-decoration:none;font-size:14px}
.footer-links a:hover{text-decoration:underline}
.footer-langs{display:flex;flex-wrap:wrap;gap:8px 24px;padding-block:24px;border-bottom:1px solid var(--border);margin-top:24px}
.footer-langs a{display:inline-flex;align-items:center;min-height:32px;font-size:13px}
.footer-bottom{display:flex;flex-wrap:wrap;align-items:center;gap:12px 24px;padding-top:24px;font-size:13px;color:var(--text-muted)}
.footer-bottom p{margin:0;margin-right:auto}
.footer-bottom a{display:inline-flex;align-items:center;min-height:24px}
.reveal{transition:opacity .35s ease,transform .35s 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}
#server-status>*{min-width:0;max-width:100%}
.prose{max-width:800px;min-width:0}
.prose p,.prose li{overflow-wrap:break-word}
.prose h2{margin-top:56px}
.prose h3{margin-top:32px}
.prose li+li{margin-top:8px}
.prose img{max-width:100%;height:auto}
.decorated,.hero,.stripe-halo{overflow-x:clip;max-width:100%}
@media(max-width:1200px){
  .topbar-in{gap:24px;padding-inline:24px}
  .mainnav li+li::before{margin-inline:8px}
  .topbar-act{gap:16px}
}
@media(max-width:1100px){
  .mainnav{display:none}
  .menu-toggle{display:inline-flex}
  .topbar-act{margin-left:auto}
}
@media(max-width:768px){
  h1{font-size:34px}
  h2{font-size:28px}
  .grid-2,.grid-3,.footer-grid{grid-template-columns:minmax(0,1fr)}
  .section{padding-top:64px;padding-bottom:64px}
  .panel,.card{padding:24px}
  .btn{height:48px;min-width:0;padding-inline:22px}
  .footer-grid{gap:32px}
}
@media(max-width:640px){
  :root{--gutter:16px}
  .no-break{white-space:normal}
  .topbar-in{padding-inline:16px;gap:12px}
  .topbar-act{gap:8px;margin-left:auto}
  .lang span{display:none}
  .brand{gap:7px}
  .brand-word{font-size:18px}
  .brand-mark{width:30px;height:30px}
  .btn-login{padding-inline:12px;font-size:13px}
  .tilt,.decorative-tilt{transform:none}
  .decorated,.stripe-halo{max-width:100%}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal,.reveal.pending,.reveal.shown{opacity:1;transform:none;transition:none}
  .btn,.btn-login{transition:none}
  .btn:hover,.btn-login:hover{transform:none}
}