:root {
  --bg:#F7EEDF;
  --bg-top:#FBF5EA;
  --bg-panel:#FFFAF1;
  --bg-panel2:#EFE2CC;
  --border:#E2D2B8;
  --border-strong:#CDB894;
  --accent:#DB5F2A;
  --accent-hi:#E5793A;
  --accent-dark:#A8421A;
  --apricot:#F0A04B;
  --text:#2B1F16;
  --text-muted:#6E5D4C;
  --success:#2F8A57;
  --warn:#C8891A;
  --error:#B83A2E;
  --white:#FFFFFF;
  --wall-lo:#F2E5CF;
  --wood-pale:#EECFA2;
  --wood-hi:#DDAE73;
  --wood:#C48E56;
  --wood-lo:#9A673A;
  --wood-deep:#6F4626;
  --metal-hi:#F4F1EC;
  --metal:#D6D1C9;
  --metal-lo:#A8A198;
  --bezel:#251C15;
  --bezel-cam:#3D3128;
  --sky-hi:#FFF7E9;
  --sky:#F9E1BA;
  --sky-lo:#F2CC98;
  --hill-1:#EBC690;
  --hill-2:#DCB07A;
  --hill-3:#C99A66;
  --scr-1:#EBD7B7;
  --scr-2:#CDA67E;
  --shelf-back:#DCC7A6;
  --book-1:#CDB998;
  --book-2:#9F8B71;
  --book-3:#B08566;
  --book-4:#8C9580;
  --book-5:#E2D3B6;
  --book-6:#7B6552;
  --flag-red:#C8372D;
  --flag-blue:#2C4684;
  --flag-white:#FFFDF8;
  --accent-a10:rgba(219,95,42,.10);
  --accent-a12:rgba(219,95,42,.12);
  --accent-a14:rgba(219,95,42,.14);
  --apricot-a18:rgba(240,160,75,.18);
  --apricot-a30:rgba(240,160,75,.30);
  --apricot-a0:rgba(240,160,75,0);
  --sun-a60:rgba(255,250,241,.60);
  --sun-a0:rgba(255,250,241,0);
  --ink-a04:rgba(43,31,22,.04);
  --ink-a06:rgba(43,31,22,.06);
  --ink-a10:rgba(43,31,22,.10);
  --ink-a16:rgba(43,31,22,.16);
  --ink-a24:rgba(43,31,22,.24);
  --ink-a40:rgba(43,31,22,.40);
  --hl-a90:rgba(255,255,255,.90);
  --hl-a60:rgba(255,255,255,.60);
  --hl-a30:rgba(255,255,255,.30);
  --hl-a18:rgba(255,255,255,.18);
  --hl-a0:rgba(255,255,255,0);
  --success-a12:rgba(47,138,87,.12);
  --tape:rgba(226,210,184,.78);
  --font-display:"Iowan Old Style","Palatino Linotype",Georgia,"Songti SC","STSong","Noto Serif CJK SC","Source Han Serif SC",serif;
  --font-body:"Inter","Noto Sans SC","Noto Sans JP","Noto Sans KR","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:"JetBrains Mono",ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
  --r-xs:4px;
  --r-sm:6px;
  --r-md:8px;
  --r-device:14px;
  --r-round:50%;
  --gutter:32px;
  --head-height:64px;
  --toc-height:60px;
  --anchor-offset:140px;
  --space-section:88px;
  --shadow-paper:0 18px 38px -18px var(--accent-a10),inset 0 1px 0 var(--hl-a90);
  --ease-time:.2s;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-padding-top:80px;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}
html.nav-open{overflow:hidden}
a{color:inherit;text-underline-offset:.2em}
button,input,select,textarea{font:inherit;color:inherit}
button,summary{cursor:pointer}
button{background:var(--bg-panel);border:1px solid var(--border);border-radius:var(--r-sm)}
img,svg{vertical-align:middle}
img{max-width:100%;height:auto}
svg{flex-shrink:0}
:focus-visible{outline:2px solid var(--text);outline-offset:3px;border-radius:var(--r-xs)}
[hidden]{display:none!important}
h1,h2,h3{font-family:var(--font-display);font-weight:400;text-wrap:balance;overflow-wrap:break-word}
h1{font-size:clamp(52px,4.6vw,66px);line-height:1.2;letter-spacing:-.02em;margin:0 0 24px}
h2{font-size:clamp(28px,3vw,40px);line-height:1.3;margin:0 0 24px}
h3{font-size:25px;line-height:1.4;margin:0 0 16px}
p{margin:0 0 20px}
ul,ol{padding-inline-start:24px}
code{font-family:var(--font-mono);font-size:.9em;overflow-wrap:anywhere}
pre{max-width:100%;overflow-x:auto;padding:24px;background:var(--bg-panel2);border:1px solid var(--border);border-radius:var(--r-sm)}
pre code{overflow-wrap:normal;white-space:pre}
hr{border:0;border-top:1px solid var(--border);margin:32px 0}
.wrap{max-width:1280px;margin-inline:auto;padding-inline:var(--gutter)}
.reading-wrap{max-width:880px;margin-inline:auto;padding-inline:var(--gutter)}
.section{padding-top:var(--space-section);padding-bottom:var(--space-section)}
.section-head{max-width:760px;margin-bottom:40px}
.section-head p,.muted{color:var(--text-muted)}
.prose{min-width:0;overflow-wrap:break-word}
.prose p,.prose li{line-height:1.85}
.prose h2{margin-top:56px}
.prose h3{margin-top:32px}
.prose section[id]{scroll-margin-top:80px}
.num,[data-count-to]{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:.94em;letter-spacing:-.01em}
[data-count-to]{display:inline-block;min-width:3ch;text-align:end}
.no-break{white-space:nowrap}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}
.sprite{position:absolute;width:0;height:0;overflow:hidden}
.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))}
.panel{padding:32px;background:var(--bg-panel);border:1px solid var(--border);border-radius:var(--r-md);box-shadow:var(--shadow-paper)}
.panel-inset{padding:24px;background:var(--bg-panel2);border-radius:var(--r-sm);box-shadow:inset 0 1px 3px var(--ink-a06)}
.decorated{position:relative;overflow-x:clip;max-width:100%}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-width:150px;min-height:50px;padding:10px 28px;border:0;border-radius:var(--r-sm);font-size:16px;font-weight:600;letter-spacing:.02em;text-decoration:none;white-space:nowrap;flex-shrink:0;transition:background var(--ease-time),box-shadow var(--ease-time),color var(--ease-time)}
.btn-primary{color:var(--white);background:linear-gradient(176deg,var(--accent-hi) 0%,var(--accent) 58%);box-shadow:inset 0 1px 0 var(--hl-a30),0 12px 24px -12px var(--accent-a14),0 2px 4px -1px var(--accent-a12)}
.btn-primary:hover{background:var(--accent-dark)}
.btn-primary:active{box-shadow:inset 0 2px 4px var(--ink-a24)}
.btn-ghost,.btn-secondary{color:var(--accent);background:var(--white);border:2px solid var(--accent)}
.btn-ghost:hover,.btn-secondary:hover{color:var(--accent-dark);border-color:var(--accent-dark)}
.btn-neutral{color:var(--text);background:var(--bg-panel);border:1px solid var(--border-strong)}
.btn-neutral:hover{background:var(--bg-panel2)}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.55;cursor:not-allowed}
.btn-small{min-width:0;min-height:40px;padding:8px 16px;font-size:14px}
.ctas{display:flex;justify-content:center;flex-wrap:wrap;gap:16px;margin-bottom:20px}
.site-head{position:sticky;top:0;z-index:50;background:var(--white);box-shadow:0 1px 0 var(--border)}
.head-row{display:flex;align-items:center;gap:28px;height:var(--head-height);flex-wrap:nowrap}
.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;color:var(--text);flex:none;min-height:32px}
.brand-mark{display:block;width:32px;height:32px}
.brand-word{font-weight:700;font-size:19px;letter-spacing:-.015em;white-space:nowrap}
.topnav{flex:1;min-width:0}
.topnav ul{display:flex;align-items:center;justify-content:center;list-style:none;margin:0;padding:0;white-space:nowrap}
.topnav li{display:flex;align-items:center}
.topnav li+li::before{content:"·";padding:0 11px;color:var(--border-strong);font-weight:700}
.topnav a{display:inline-flex;align-items:center;min-height:36px;padding:8px 0;font-size:14.5px;color:var(--text-muted);text-decoration:none;transition:color var(--ease-time)}
.topnav a:hover{color:var(--text)}
.topnav a[aria-current="page"]{color:var(--text);font-weight:600;text-decoration:underline;text-decoration-thickness:1.5px;text-underline-offset:7px}
.head-tools{display:flex;align-items:center;gap:12px;flex-shrink:0}
.lang-drop{position:relative}
.lang-button{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:40px;min-width:44px;width:auto;padding:8px;border:0;background:var(--white);font-size:14px;color:var(--text-muted);white-space:nowrap}
.lang-button span{white-space:nowrap}
.lang-button:hover{background:var(--bg-panel);color:var(--text)}
.drop-ico{display:block;width:16px;height:16px}
.lang-panel{position:absolute;z-index:60;right:0;top:calc(100% + 8px);min-width:156px;margin:0;padding:6px;list-style:none;background:var(--white);border-radius:var(--r-md);box-shadow:0 18px 38px -14px var(--accent-a14),0 0 0 1px var(--border)}
.lang-panel a{display:flex;align-items:center;min-height:40px;padding:8px 12px;border-radius:var(--r-sm);font-size:14px;text-decoration:none}
.lang-panel a:hover,.lang-panel a[aria-current="page"]{background:var(--bg-panel)}
.lang-panel a[aria-current="page"]{font-weight:600}
.btn-login{display:inline-flex;align-items:center;justify-content:center;min-height:36px;padding:0 16px;border:1.5px solid var(--text);border-radius:var(--r-sm);font-size:14px;font-weight:600;text-decoration:none;white-space:nowrap;transition:background var(--ease-time),color var(--ease-time)}
.btn-login:hover{background:var(--text);color:var(--bg-panel)}
.menu-button{display:none;align-items:center;justify-content:center;flex-direction:column;gap:4px;min-width:44px;min-height:44px;padding:10px;background:var(--white);border:1px solid var(--border)}
.menu-line{display:block;width:20px;height:2px;background:currentColor;flex-shrink:0}
.nav-drawer{position:fixed;top:var(--head-height);right:0;left:0;z-index:49;height:calc(100dvh - var(--head-height));max-height:calc(100dvh - var(--head-height));overflow-y:auto;overscroll-behavior:contain;padding:16px var(--gutter) 32px;background:var(--bg-panel)}
.nav-drawer ul{list-style:none;margin:0;padding:0}
.nav-drawer a{display:flex;align-items:center;width:100%;min-height:44px;padding:12px 8px;text-decoration:none;border-bottom:1px solid var(--border)}
.nav-drawer a[aria-current="page"]{font-weight:700}
.drawer-label{margin:24px 8px 8px;color:var(--text-muted);font-size:13px}
.nav-veil{position:fixed;inset:var(--head-height) 0 0;z-index:48;border:0;border-radius:0;background:var(--ink-a24)}
.static-menu{display:none;position:relative}
.static-menu summary{display:flex;align-items:center;justify-content:center;width:44px;min-height:44px;list-style:none;border:1px solid var(--border);border-radius:var(--r-sm)}
.static-menu summary::-webkit-details-marker{display:none}
.static-menu .nav-drawer{z-index:49}
.site-footer{border-top:1px solid var(--border);background:linear-gradient(180deg,var(--bg-panel2),var(--bg));padding-top:64px;padding-bottom:32px}
.footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:48px}
.footer-grid>*{min-width:0}
.footer-brand p{max-width:340px;margin-top:20px;color:var(--text-muted);font-size:14px}
.footer-title{font-family:var(--font-body);font-weight:600;font-size:14px;margin:0 0 16px}
.footer-links{display:flex;flex-wrap:wrap;gap:6px 20px;list-style:none;margin:0;padding:0}
.footer-links li{min-width:0}
.footer-links a{display:inline-flex;align-items:center;min-height:32px;font-size:14px;text-decoration:none}
.footer-links a:hover{text-decoration:underline}
.footer-languages{display:flex;flex-wrap:wrap;gap:8px 24px;margin-top:40px;padding-top:24px;border-top:1px solid var(--border)}
.footer-languages a{display:inline-flex;align-items:center;min-height:32px;font-size:14px}
.footer-bottom{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;margin-top:24px;color:var(--text-muted);font-size:13px}
.footer-bottom p{margin:0}
.footer-legal{display:flex;gap:20px}
.footer-legal 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 32px}
#server-status>*{min-width:0;max-width:100%}
#server-status+*{margin-top:32px}
@media(min-width:1101px) and (max-width:1240px){
  .head-row{gap:16px}
  .topnav li+li::before{padding-inline:7px}
  .topnav a{font-size:13px}
  .head-tools{gap:6px}
}
@media(max-width:1100px){
  .topnav{display:none}
  .head-tools{margin-left:auto}
  .menu-button{display:inline-flex}
  .static-menu{display:block}
}
@media(max-width:768px){
  :root{--space-section:56px;--gutter:24px}
  h1{font-size:clamp(28px,5.2vw,40px)}
  .grid-three{grid-template-columns:1fr}
  .grid-five{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .footer-brand{grid-column:1/-1}
  .head-row{gap:12px}
}
@media(max-width:640px){
  :root{--gutter:16px}
  .no-break{white-space:normal}
  .tilt,.note,.postcard{transform:none}
  .decorated>*{max-width:100%}
  .head-row{gap:8px}
  .brand{gap:6px}
  .brand-mark{width:26px;height:26px}
  .brand-word{font-size:16px}
  .head-tools{gap:4px;margin-left:auto}
  .btn-login{padding-inline:10px;font-size:13px}
  .lang-button{font-size:12px;padding-inline:5px;gap:4px}
  .lang-button .drop-ico{display:none}
  .panel{padding:24px}
  .footer-grid{grid-template-columns:1fr}
  .footer-brand{grid-column:auto}
  .btn{min-width:132px;padding-inline:20px}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
  .reveal,.reveal.pending{opacity:1;transform:none}
}