/*
 * amirshahamiri.ir
 * A framed page: dashed rails at the content edges, hairlines between bands,
 * small squares where they cross. Black is the main colour; light is the
 * default theme and [data-theme="dark"] switches everything through tokens.
 */

@font-face{font-family:Dana;src:url(../fonts/DanaFaNum-Regular.woff2) format("woff2");font-weight:400;font-display:swap}
@font-face{font-family:Dana;src:url(../fonts/DanaFaNum-Medium.woff2) format("woff2");font-weight:500;font-display:swap}
@font-face{font-family:Dana;src:url(../fonts/DanaFaNum-Bold.woff2) format("woff2");font-weight:700;font-display:swap}
@font-face{font-family:"JetBrains Mono";src:url(../fonts/jetbrains-mono-400.woff2) format("woff2");font-weight:400;font-display:swap}
@font-face{font-family:"JetBrains Mono";src:url(../fonts/jetbrains-mono-500.woff2) format("woff2");font-weight:500;font-display:swap}

:root{
  --bg:#fff;--fg:#0a0a0a;--mute:#666;--line:#e7e7e7;--rail:#d6d6d6;--soft:#f6f6f6;--panel:#fff;
  --ink:#0a0a0a;--on-ink:#fff;--grid:rgba(0,0,0,.055);--shadow:rgba(0,0,0,.22);
  --hl-kw:#0a0a0a;--hl-type:#3d3d3d;--hl-str:#6e6e6e;--hl-com:#a0a0a0;--hl-prop:#0a0a0a;--hl-var:#4a4a4a;
  --fa:Dana,Tahoma,sans-serif;--mono:"JetBrains Mono",Dana,ui-monospace,monospace;
  --ease:cubic-bezier(.2,.7,.2,1);--max:1280px;--gut:clamp(20px,4vw,48px);
  color-scheme:light;
}
:root[data-theme="dark"]{
  --bg:#000;--fg:#f2f2f0;--mute:#8e8e8e;--line:#1e1e1e;--rail:#2b2b2b;--soft:#0c0c0c;--panel:#070707;
  --ink:#f2f2f0;--on-ink:#000;--grid:rgba(255,255,255,.06);--shadow:rgba(0,0,0,.8);
  --hl-kw:#f2f2f0;--hl-type:#cfcfcf;--hl-str:#9b9b9b;--hl-com:#5c5c5c;--hl-prop:#f2f2f0;--hl-var:#bdbdbd;
  color-scheme:dark;
}
html.theme-anim *{transition:background-color .45s,color .45s,border-color .45s,fill .45s,stroke .45s!important}

*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%;scroll-padding-top:84px;overflow-x:clip}
body{background:var(--bg);color:var(--fg);font:400 16px/1.85 var(--fa);overflow-x:clip;text-rendering:optimizeLegibility}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
img{max-width:100%;height:auto}
::selection{background:var(--ink);color:var(--on-ink)}
:focus-visible{outline:2px solid var(--fg);outline-offset:3px;border-radius:2px}
.mono{font-family:var(--mono);direction:ltr;unicode-bidi:isolate}
kbd{font:400 11px var(--mono);direction:ltr;unicode-bidi:isolate;padding:1px 5px;border:1px solid var(--line);border-bottom-width:2px;border-radius:4px;background:var(--soft);color:var(--mute)}
.skip{position:absolute;top:-60px;right:16px;z-index:100;background:var(--ink);color:var(--on-ink);padding:8px 14px;border-radius:6px}
.skip:focus{top:12px}
.hc{display:block;width:13px;height:13px;border-radius:50%;border:1.5px solid currentColor;background:linear-gradient(90deg,currentColor 50%,transparent 50%)}
.link{background:none;border:0;cursor:pointer;text-decoration:underline;text-underline-offset:3px;text-decoration-color:var(--rail)}
.link:hover{text-decoration-color:currentColor}

/* ---------- frame ---------- */
.frame{max-width:var(--max);margin:0 auto;position:relative;border-inline:1px dashed var(--rail)}
.in{padding-inline:var(--gut)}
.band{position:relative;border-top:1px solid var(--line)}
.band::before,.band::after{content:"";position:absolute;top:-4px;width:7px;height:7px;background:var(--ink);z-index:3}
.band::before{right:max(calc((100% - var(--max)) / 2 - 4px),0px)}
.band::after{left:max(calc((100% - var(--max)) / 2 - 4px),0px)}
.iso-grid{position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(30deg,var(--grid) 0 1px,transparent 1px 44px),repeating-linear-gradient(150deg,var(--grid) 0 1px,transparent 1px 44px);
  -webkit-mask-image:radial-gradient(70% 80% at 30% 50%,#000 30%,transparent 75%);mask-image:radial-gradient(70% 80% at 30% 50%,#000 30%,transparent 75%)}

/* ---------- header ---------- */
.top{position:sticky;top:0;z-index:40;background:color-mix(in srgb,var(--bg) 86%,transparent);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.top-in{max-width:var(--max);margin:0 auto;height:64px;padding-inline:var(--gut);display:flex;align-items:center;gap:28px}
.word{display:flex;align-items:center;gap:10px;font-weight:700;font-size:17px;white-space:nowrap}
.word i{width:26px;height:26px;background:var(--ink);color:var(--on-ink);display:grid;place-items:center;font:500 10px var(--mono);font-style:normal;letter-spacing:-.04em;flex:none}
.nav{display:flex;gap:22px;font-size:15px;color:var(--mute)}
.nav a{position:relative;transition:color .2s}
.nav a:hover,.nav a.on{color:var(--fg)}
.nav a.on::after{content:"";position:absolute;inset:auto 0 -21px;height:1.5px;background:var(--fg)}
.sp{flex:1}
.search{display:flex;align-items:center;gap:10px;height:36px;padding:0 10px 0 12px;border:1px solid var(--line);border-radius:8px;color:var(--mute);font-size:14px;background:var(--panel);cursor:pointer;min-width:210px;transition:border-color .2s}
.search:hover{border-color:var(--mute)}
.search kbd{margin-inline-start:auto;border:0;background:none;padding:0}
.ib{width:36px;height:36px;border:1px solid var(--line);border-radius:8px;background:var(--panel);display:grid;place-items:center;cursor:pointer;transition:border-color .2s;flex:none}
.ib:hover{border-color:var(--mute)}
.menu-btn{display:none}
.burger,.burger::before,.burger::after{display:block;width:16px;height:1.5px;background:currentColor;border-radius:2px;transition:transform .25s var(--ease),opacity .2s}
.burger{position:relative}
.burger::before,.burger::after{content:"";position:absolute;left:0}
.burger::before{top:-5px}.burger::after{top:5px}
[aria-expanded="true"] .burger{background:transparent}
[aria-expanded="true"] .burger::before{transform:translateY(5px) rotate(45deg)}
[aria-expanded="true"] .burger::after{transform:translateY(-5px) rotate(-45deg)}
.mnav{border-top:1px solid var(--line);padding:8px var(--gut) 16px;background:var(--bg);animation:drop .18s var(--ease)}
.mnav[hidden]{display:none}
@keyframes drop{from{opacity:0;transform:translateY(-6px)}}
.mnav a{display:flex;justify-content:space-between;align-items:center;padding:14px 4px;border-bottom:1px solid var(--line);font-size:18px;font-weight:500}
.mnav a:last-child{border-bottom:0}
.mnav a span{font-size:12px;color:var(--mute);font-weight:400}
.mnav a.on{color:var(--fg)}
.mnav a.on span{color:var(--fg)}

/* ---------- shared bits ---------- */
h1,h2,h3{font-weight:500;text-wrap:balance}
.lead{color:var(--mute);font-size:clamp(17px,1.5vw,20px);line-height:1.8;max-width:34em}
.eyebrow{display:inline-flex;align-items:center;gap:10px;height:30px;padding:0 12px;border:1px solid var(--line);border-radius:99px;font:400 12px var(--mono);color:var(--mute);direction:ltr;background:var(--panel)}
.eyebrow b{width:6px;height:6px;border-radius:50%;background:var(--fg)}
.btns{display:flex;gap:12px;flex-wrap:wrap}
.btn{height:48px;padding:0 22px;border-radius:6px;display:inline-flex;align-items:center;gap:10px;font-size:16px;font-weight:500;border:1px solid var(--line);background:var(--panel);transition:transform .2s var(--ease),border-color .2s}
.btn:hover{border-color:var(--fg)}
.btn.primary{background:var(--ink);color:var(--on-ink);border-color:var(--ink)}
.btn.primary:hover{transform:translateY(-1px)}
.btn .ar{font-family:var(--mono);transition:transform .25s var(--ease)}
.btn:hover .ar{transform:translateX(-4px)}
.small{display:inline-flex;height:38px;padding:0 14px;border:1px solid var(--line);border-radius:6px;align-items:center;gap:8px;font-size:14px;background:var(--panel);transition:border-color .2s}
.small:hover{border-color:var(--fg)}
.checks{list-style:none;display:grid;gap:10px}
.checks li{display:flex;gap:12px;align-items:center}
.checks li::before{content:"";width:7px;height:7px;background:var(--fg);flex:none}
.chip{display:inline-flex;align-items:center;gap:6px;height:32px;padding:0 14px;border:1px solid var(--line);border-radius:99px;font-size:14px;background:var(--panel);transition:border-color .2s,background .2s,color .2s;white-space:nowrap}
.chip small{font:400 11px var(--mono);color:var(--mute)}
.chip:hover{border-color:var(--fg)}
.chip.on{background:var(--ink);color:var(--on-ink);border-color:var(--ink)}
.chip.on small{color:inherit;opacity:.6}
.chip.tag{font-family:var(--mono);font-size:12px;direction:ltr}
.draft{font:400 11px var(--mono);border:1px dashed var(--mute);color:var(--mute);border-radius:99px;padding:0 8px}
.empty{padding:72px var(--gut);text-align:center;color:var(--mute)}
.toc-k{font:400 11px var(--mono);color:var(--mute);letter-spacing:.12em;direction:ltr;text-align:right;margin-bottom:14px}
.copy{height:28px;padding:0 12px;border:1px solid var(--line);border-radius:99px;background:var(--panel);font:400 12px var(--mono);color:var(--mute);cursor:pointer;transition:color .2s,border-color .2s}
.copy:hover{color:var(--fg);border-color:var(--fg)}
.js .rv{opacity:0;transform:translateY(18px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.js .rv.on{opacity:1;transform:none}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;min-height:min(720px,calc(100svh - 64px));display:grid;grid-template-columns:1fr 1fr;align-items:center}
.hero>*{min-width:0}
.hero-txt{position:relative;z-index:2;padding-block:64px}
.hero h1{margin-top:26px;font-size:clamp(46px,6.2vw,92px);line-height:1.12}
.hero h1 span{color:var(--mute);font-size:.6em;display:inline-block;margin-top:.2em}
.hero .lead{margin-top:22px;max-width:28em}
.hero .btns{margin-top:36px}
.hero-art{position:relative;z-index:1;height:100%;min-height:520px}
.iso-stack{position:absolute;inset:0;width:100%;height:100%;overflow:visible}
.iso-stack .layer{transition:transform .6s var(--ease)}
.hero-art:hover .l0{transform:translateY(-46px)}.hero-art:hover .l1{transform:translateY(-34px)}
.hero-art:hover .l2{transform:translateY(-22px)}.hero-art:hover .l3{transform:translateY(-11px)}
.f-top{fill:var(--panel);stroke:var(--fg);stroke-width:1.2}
.f-l{fill:var(--soft);stroke:var(--fg);stroke-width:1.2}
.f-r{fill:var(--bg);stroke:var(--fg);stroke-width:1.2}
.dark .f-top{fill:#2b2b2b}.dark .f-l{fill:var(--ink)}.dark .f-r{fill:#1b1b1b}
:root[data-theme="dark"] .dark .f-top{fill:#d9d9d9}:root[data-theme="dark"] .dark .f-r{fill:#bdbdbd}
.lbl{font:500 15px var(--fa);fill:var(--fg)}
.lbl.mono{font:500 18px var(--mono)}
.dark .lbl{fill:var(--on-ink)}
.route{fill:none;stroke:var(--fg);stroke-width:1.3}
.route.dim{stroke:var(--mute);stroke-dasharray:4 5}
.pill rect{fill:var(--panel);stroke:var(--fg);stroke-width:1.2}
.pill text{font:500 12px var(--mono);fill:var(--fg)}
.pulse{fill:var(--fg)}

/* ---------- strip of contact links ---------- */
.strip{display:flex;flex-wrap:wrap}
.strip>*{flex:1 1 150px;min-height:112px;display:flex;align-items:center;padding:0 28px;border-inline-start:1px solid var(--line);min-width:0}
.strip>.strip-k{flex:1.4 1 240px}
.strip .strip-k{border:0;font:500 13px/1.7 var(--mono);direction:ltr;text-align:right;justify-content:flex-start;letter-spacing:.06em}
.strip a{justify-content:space-between;font:400 15px var(--mono);transition:background .25s}
.strip a i{font-style:normal;color:var(--mute);transition:transform .25s var(--ease),color .25s}
.strip a:hover{background:var(--soft)}
.strip a:hover i{transform:translate(-3px,-3px);color:var(--fg)}

/* ---------- intro + code panel ---------- */
.intro{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:start;padding-block:96px;position:relative}
.intro::before{content:"";position:absolute;inset:0;background:radial-gradient(50% 60% at 30% 40%,var(--soft),transparent 70%);pointer-events:none}
.intro>*{position:relative;min-width:0}
.intro h2,.sec-head h2{font-size:clamp(30px,3.4vw,48px);line-height:1.3}
.intro p{margin-top:18px;color:var(--mute);font-size:17px}
.intro .checks{margin-top:24px}
.intro .small{margin-top:28px}
.tabs{display:flex;gap:4px;padding:6px;margin-bottom:12px;border:1px solid var(--line);border-radius:99px;width:max-content;max-width:100%;overflow:auto;background:var(--panel)}
.tabs button{height:34px;padding:0 16px;border:0;border-radius:99px;background:none;color:var(--mute);font-size:14px;cursor:pointer;white-space:nowrap}
.tabs button[aria-selected="true"]{background:var(--soft);color:var(--fg);box-shadow:0 0 0 1px var(--line)}
.code{border:1px solid var(--line);border-radius:12px;background:var(--panel);overflow:hidden;box-shadow:0 1px 0 var(--line),0 24px 60px -30px var(--shadow);direction:ltr}
.files{display:flex;border-bottom:1px solid var(--line)}
.files span{display:flex;align-items:center;gap:8px;padding:10px 16px;font:400 13px var(--mono);border-inline-end:1px solid var(--line);background:var(--bg);box-shadow:inset 0 -2px 0 var(--fg)}
.files span::before{content:"";width:8px;height:8px;border:1.5px solid currentColor;transform:rotate(45deg)}
.code pre{padding:22px 24px 28px;font:400 14px/1.85 var(--mono);overflow:auto;min-height:330px;color:var(--hl-var)}

/* ---------- article cards ---------- */
.sec-head{text-align:center;padding:96px 20px 48px}
.sec-head p{color:var(--mute);margin-top:12px}
.sec-foot{display:flex;justify-content:center;padding:36px}
.cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));border-top:1px solid var(--line)}
.card{padding:36px var(--gut);border-bottom:1px solid var(--line);display:flex;flex-direction:column;gap:14px;min-height:240px;position:relative;transition:background .25s}
.card:nth-child(odd){border-inline-start:1px solid var(--line)}
.card:hover{background:var(--soft)}
.card .meta{display:flex;gap:10px;align-items:center;font:400 12px var(--mono);color:var(--mute);direction:ltr;justify-content:flex-end;flex-wrap:wrap}
.card .meta b{font:400 12px var(--fa);color:var(--fg);border:1px solid var(--line);border-radius:99px;padding:0 10px;background:var(--panel)}
.card h3{font-size:clamp(21px,2vw,27px);line-height:1.5;margin-top:auto}
.card p{color:var(--mute);font-size:15px}
.card .go{position:absolute;left:var(--gut);top:36px;font-family:var(--mono);transition:transform .25s var(--ease)}
.card:hover .go{transform:translate(-4px,-4px)}

/* ---------- call to action ---------- */
.cta{position:relative;overflow:hidden;text-align:center;padding:120px 20px}
.cta .iso-grid{-webkit-mask-image:radial-gradient(60% 70% at 50% 50%,#000 20%,transparent 75%);mask-image:radial-gradient(60% 70% at 50% 50%,#000 20%,transparent 75%)}
.cta h2{position:relative;font-size:clamp(36px,5vw,72px);line-height:1.25}
.cta h2 span{color:var(--mute)}
.cta .btns{justify-content:center;position:relative;margin-top:36px}

/* ---------- page heads ---------- */
.page-head{position:relative;overflow:hidden;padding-block:88px 72px}
.page-head>*:not(.iso-grid){position:relative}
.crumb{font-size:13px;color:var(--mute);direction:ltr;text-align:right;margin-bottom:18px}
.crumb a{color:var(--fg)}
.page-head h1{font-size:clamp(40px,5.4vw,76px);line-height:1.2;max-width:18em}
.page-head .lead{margin-top:16px}

/* ---------- articles list ---------- */
.filters{display:flex;gap:8px;flex-wrap:wrap;align-items:center;padding-block:22px}
.filters-sep{width:1px;height:22px;background:var(--line);margin-inline:6px}
.year{display:grid;grid-template-columns:9em 1fr;gap:24px;padding-block:44px;border-bottom:1px solid var(--line)}
.year:last-child{border:0}
.year-k{font-size:14px;color:var(--mute);text-align:right;padding-top:22px}
.rows{min-width:0}
.row{display:grid;grid-template-columns:7.5em minmax(0,1fr) auto;gap:20px;align-items:baseline;padding:20px 16px;margin-inline:-16px;border-radius:12px;transition:background .2s}
.row:hover{background:var(--soft)}
.row-d{font-size:12px;color:var(--mute);text-align:right}
.row-t strong{display:block;font-weight:500;font-size:19px;line-height:1.55}
.row-t small{display:block;color:var(--mute);font-size:14px;margin-top:4px}
.row-m{display:flex;gap:8px;align-items:center;font-size:13px;color:var(--mute);white-space:nowrap}
.row-m .mono{font-size:12px}

/* ---------- article ---------- */
.article-head h1{font-size:clamp(34px,4.4vw,60px)}
.art-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 12px;margin-top:26px;font-size:15px;color:var(--mute)}
.art-meta a{color:var(--fg);border-bottom:1px solid var(--line)}
.art-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--rail)}
.article-body{display:grid;grid-template-columns:minmax(0,46rem);justify-content:center;gap:64px;padding-block:64px 88px}
.article-body.has-toc{grid-template-columns:minmax(0,46rem) 15rem;justify-content:space-between}
.toc{order:2;position:sticky;top:96px;align-self:start;max-height:calc(100vh - 120px);overflow:auto;padding-inline-start:20px;border-inline-start:1px solid var(--line)}
.toc ol{list-style:none;display:grid;gap:2px}
.toc a{display:block;padding:5px 0;font-size:14px;color:var(--mute);line-height:1.6;transition:color .2s}
.toc a:hover,.toc a.on{color:var(--fg)}
.toc a.on{font-weight:500}
.toc .lv3 a{padding-inline-start:14px;font-size:13px}
.article-foot{padding-block:36px;display:grid;gap:28px}
.tags{display:flex;gap:8px;flex-wrap:wrap}
.pn{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.pn-a{display:flex;flex-direction:column;gap:4px;padding:20px 22px;border:1px solid var(--line);border-radius:12px;transition:border-color .2s}
.pn-a:hover{border-color:var(--fg)}
.pn-a small{font-size:13px;color:var(--mute)}
.pn-a span{font-weight:500}
.pn-a.next{text-align:left}

/* prose */
.prose{font-size:18px;line-height:2.05;min-width:0}
.prose>*+*{margin-top:1.15em}
.prose h2{font-size:clamp(25px,2.4vw,32px);line-height:1.45;margin-top:2.1em}
.prose h3{font-size:clamp(20px,1.8vw,24px);line-height:1.5;margin-top:1.8em}
.prose h2+*,.prose h3+*{margin-top:.6em}
.prose .anchor{margin-inline-start:.4em;color:var(--rail);font-family:var(--mono);font-size:.7em;opacity:0;transition:opacity .2s}
.prose h2:hover .anchor,.prose h3:hover .anchor{opacity:1}
.prose a:not(.anchor):not(.footnote-ref):not(.footnote-backref){text-decoration:underline;text-decoration-color:var(--rail);text-underline-offset:4px;text-decoration-thickness:1px;transition:text-decoration-color .2s}
.prose a:not(.anchor):hover{text-decoration-color:var(--fg)}
.prose strong{font-weight:700}
.prose ul,.prose ol{padding-inline-start:1.4em}
.prose li+li{margin-top:.35em}
.prose ul li::marker{color:var(--mute)}
.prose ol li::marker{font-family:var(--mono);font-size:.85em;color:var(--mute)}
.prose blockquote{border-inline-start:2px solid var(--fg);padding-inline-start:1.1em;color:var(--mute)}
.prose hr{border:0;border-top:1px solid var(--line);margin-block:2.4em}
.prose :not(pre)>code{font:400 .84em var(--mono);direction:ltr;unicode-bidi:isolate;background:var(--soft);border:1px solid var(--line);border-radius:5px;padding:.1em .4em}
.prose table{width:100%;border-collapse:collapse;font-size:16px;display:block;overflow-x:auto}
.prose th,.prose td{text-align:right;padding:10px 14px;border-bottom:1px solid var(--line);white-space:nowrap}
.prose th{font-weight:500;border-bottom-color:var(--fg)}
.prose figure{margin-block:2em}
.prose figure img{display:block;width:100%;border:1px solid var(--line);border-radius:10px}
.prose figcaption{margin-top:10px;font-size:14px;color:var(--mute);text-align:center}
.prose sup{font-family:var(--mono);font-size:.7em;line-height:0}
.prose .footnote-ref{padding-inline:2px;color:var(--fg)}
.prose .footnotes{margin-top:3em;padding-top:1.2em;border-top:1px solid var(--line);font-size:15px;color:var(--mute)}
.prose .footnotes ol{padding-inline-start:1.2em}
.prose .footnote-backref{margin-inline-start:6px;font-family:var(--mono)}

/* code blocks inside articles */
.codeblock{margin-block:1.7em;border:1px solid var(--line);border-radius:12px;background:var(--panel);overflow:hidden;box-shadow:0 18px 50px -34px var(--shadow)}
.codeblock-head{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:8px 8px 8px 16px;border-bottom:1px solid var(--line);background:var(--soft)}
.codeblock-name{font:400 12.5px var(--mono);color:var(--mute);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.codeblock pre{padding:18px 20px;overflow:auto;font:400 14px/1.8 var(--mono);color:var(--hl-var);tab-size:4}
.codeblock .copy{order:2}
.hl-keyword{color:var(--hl-kw);font-weight:500}
.hl-type,.hl-generic{color:var(--hl-type)}
.hl-property{color:var(--hl-prop)}
.hl-value,.hl-attribute{color:var(--hl-str)}
.hl-variable{color:var(--hl-var)}
.hl-number,.hl-literal{color:var(--hl-type)}
.hl-comment{color:var(--hl-com);font-style:italic}
.hl-blur{filter:blur(2px);opacity:.6}
.hl-strong{font-weight:700}
.hl-em{font-style:italic}
.hl-addition{background:color-mix(in srgb,var(--fg) 8%,transparent);display:inline-block;min-width:100%}
.hl-deletion{opacity:.55;text-decoration:line-through;display:inline-block;min-width:100%}
.hl-gutter{display:inline-block;width:2.4em;margin-inline-end:1em;color:var(--hl-com);text-align:right;user-select:none}

/* ---------- about ---------- */
.about-id{display:flex;gap:28px;align-items:center}
.avatar{width:96px;height:96px;flex:none;background:var(--ink);color:var(--on-ink);display:grid;place-items:center;font:500 26px var(--mono);letter-spacing:-.05em}
.about-id .crumb{margin-bottom:8px}
.about-id h1{font-size:clamp(36px,4.6vw,64px)}
.about-id .lead{margin-top:6px}
.about-body{display:grid;grid-template-columns:minmax(0,46rem) 15rem;justify-content:space-between;gap:64px;padding-block:64px 88px}
.facts{position:sticky;top:96px;align-self:start;display:grid;gap:10px}
.facts .checks{margin-bottom:28px;font-size:15px}
.facts-links{list-style:none;display:grid}
.facts-links a{display:flex;justify-content:space-between;padding:10px 0;border-bottom:1px solid var(--line);font:400 14px var(--mono)}
.facts-links i{font-style:normal;color:var(--mute)}

/* ---------- contact ---------- */
.contact-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr))}
.contact-cell{position:relative;display:flex;flex-direction:column;gap:12px;min-height:200px;padding:36px var(--gut);border-bottom:1px solid var(--line);transition:background .25s;min-width:0}
.contact-cell:nth-child(odd){border-inline-start:1px solid var(--line)}
a.contact-cell:hover{background:var(--soft)}
.contact-cell span.mono,.contact-cell a.mono{font-size:clamp(16px,1.6vw,20px);overflow-wrap:anywhere;text-align:right}
.contact-cell i{position:absolute;left:var(--gut);top:36px;font-style:normal;font-family:var(--mono);transition:transform .25s var(--ease)}
a.contact-cell:hover i{transform:translate(-4px,-4px)}
.contact-cell.mail{grid-column:1/-1;border-inline-start:0}
.mail-addr{font-size:clamp(22px,3.2vw,40px)!important;width:max-content;max-width:100%}
.contact-cell .copy{align-self:flex-start}
.placeholder{color:var(--mute);font-size:15px}


/* ---------- contact form ---------- */
.contact-layout{display:grid;grid-template-columns:minmax(0,1fr) 15rem;gap:64px;padding-block:56px 88px;align-items:start}
.cform{display:grid;gap:26px;min-width:0}
.field{display:grid;gap:8px;border:0;min-width:0}
.field>label,.field legend{font-weight:500;font-size:15px}
.field legend{margin-bottom:10px}
.field legend small{color:var(--mute);font-weight:400}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.cform input[type=text],.cform textarea{width:100%;font:inherit;font-size:16px;color:var(--fg);background:var(--panel);border:1px solid var(--line);border-radius:8px;padding:12px 14px;transition:border-color .2s,box-shadow .2s}
.cform textarea{resize:vertical;min-height:160px;line-height:1.9}
.cform input:focus,.cform textarea:focus{outline:none;border-color:var(--fg);box-shadow:0 0 0 3px color-mix(in srgb,var(--fg) 10%,transparent)}
.cform [aria-invalid=true]{border-color:var(--fg);border-style:dashed}
.cform ::placeholder{color:var(--mute);opacity:.8}
.topics{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
.topic{position:relative;cursor:pointer}
.topic input,.chip-r input{position:absolute;opacity:0;pointer-events:none}
.topic span{display:flex;align-items:center;gap:12px;min-height:56px;padding:12px 16px;border:1px solid var(--line);border-radius:10px;background:var(--panel);font-size:15px;transition:border-color .2s,background .2s}
.topic span::before{content:"";width:14px;height:14px;flex:none;border:1.5px solid var(--rail);border-radius:50%;transition:border-color .2s,box-shadow .2s}
.topic:hover span{border-color:var(--mute)}
.topic input:checked+span{border-color:var(--fg);background:var(--soft)}
.topic input:checked+span::before{border-color:var(--fg);box-shadow:inset 0 0 0 3px var(--panel),inset 0 0 0 7px var(--fg)}
.topic input:focus-visible+span,.chip-r input:focus-visible+span{outline:2px solid var(--fg);outline-offset:2px}
.chips{display:flex;gap:8px;flex-wrap:wrap}
.chip-r span{display:inline-flex;align-items:center;height:36px;padding:0 16px;border:1px solid var(--line);border-radius:99px;background:var(--panel);font-size:14px;cursor:pointer;transition:border-color .2s,background .2s,color .2s}
.chip-r:hover span{border-color:var(--mute)}
.chip-r input:checked+span{background:var(--ink);color:var(--on-ink);border-color:var(--ink)}
.ferr{font-size:13px;color:var(--fg);display:flex;gap:6px;align-items:center}
.ferr::before{content:"!";width:16px;height:16px;border-radius:50%;background:var(--ink);color:var(--on-ink);display:grid;place-items:center;font:500 11px var(--mono);flex:none}
.form-alert{padding:12px 16px;border:1px dashed var(--fg);border-radius:8px;font-size:15px}
.form-foot{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.form-foot .note{font-size:13px;color:var(--mute)}
.form-foot button{cursor:pointer}
.hp{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}
.direct{position:sticky;top:96px;display:grid;gap:12px}
.direct-mail{display:flex;flex-direction:column;align-items:flex-start;gap:10px;padding-bottom:16px;border-bottom:1px solid var(--line)}
.direct-mail a{font-size:15px;overflow-wrap:anywhere}

/* ---------- 404 ---------- */
.err{position:relative;overflow:hidden;display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;padding-block:96px;min-height:calc(100svh - 64px - 1px)}
.err>*:not(.iso-grid){position:relative;min-width:0}
.term{border:1px solid var(--line);border-radius:12px;background:var(--panel);overflow:hidden;box-shadow:0 24px 60px -30px var(--shadow)}
.term-bar{display:flex;align-items:center;gap:7px;padding:10px 14px;border-bottom:1px solid var(--line);background:var(--soft);font:400 12px var(--mono);color:var(--mute)}
.term-bar i{width:10px;height:10px;border-radius:50%;border:1px solid var(--rail)}
.term-bar span{margin-inline-start:auto}
.term pre{padding:22px;font:400 14px/1.9 var(--mono);overflow:auto;white-space:pre-wrap;word-break:break-all}
.term .mute{color:var(--mute)}
.term .err-line{color:var(--fg);font-weight:500}
.term a{text-decoration:underline;text-underline-offset:3px;text-decoration-color:var(--rail)}
.term a:hover{text-decoration-color:var(--fg)}
.cursor{display:inline-block;width:.6em;height:1.1em;background:var(--fg);vertical-align:-3px;animation:blink 1s steps(1) infinite}
@keyframes blink{50%{opacity:0}}
.err h1{font-size:clamp(34px,4vw,56px)}
.err .lead{margin-top:14px}
.err .btns{margin-top:28px}

/* ---------- footer ---------- */
.foot-grid{display:grid;grid-template-columns:2fr repeat(3,1fr);gap:32px;padding-block:64px}
.foot-about p{color:var(--mute);margin-top:14px;max-width:22em}
.foot h2{font-size:15px;margin-bottom:14px}
.foot ul{list-style:none;display:grid;gap:10px;color:var(--mute);font-size:15px}
.foot ul a:hover,.foot ul button:hover{color:var(--fg)}
.foot .link{text-decoration:none;color:inherit}
.legal{display:flex;justify-content:space-between;gap:16px;padding-block:22px;font:400 12px var(--mono);color:var(--mute);direction:ltr;border-top:1px solid var(--line)}

/* ---------- command palette ---------- */
.pal{position:fixed;inset:0;z-index:60;background:color-mix(in srgb,var(--bg) 55%,transparent);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;justify-content:center;align-items:flex-start;padding:14vh 16px 0}
.pal[hidden]{display:none}
.pal-box{width:min(580px,100%);background:var(--panel);border:1px solid var(--line);border-radius:12px;box-shadow:0 30px 80px -20px var(--shadow);overflow:hidden;animation:pop .14s var(--ease)}
@keyframes pop{from{opacity:0;transform:scale(.97)}}
.pal-box input{width:100%;border:0;border-bottom:1px solid var(--line);background:none;padding:16px 18px;font:inherit;font-size:16px;color:var(--fg);outline:none}
.pal-box input::-webkit-search-cancel-button{display:none}
.pal-box ul{list-style:none;padding:6px;max-height:min(360px,50vh);overflow:auto}
.pal-box li a,.pal-box li button{display:flex;justify-content:space-between;align-items:center;gap:12px;width:100%;padding:10px 12px;border:0;border-radius:7px;background:none;text-align:right;cursor:pointer}
.pal-box li span{font:400 11px var(--mono);color:var(--mute);direction:ltr;white-space:nowrap}
.pal-box li[aria-selected="true"] a,.pal-box li[aria-selected="true"] button{background:var(--soft)}
.pal-box .pal-empty{padding:18px 12px;color:var(--mute);font-size:14px}
.pal-hint{display:flex;gap:16px;padding:10px 16px;border-top:1px solid var(--line);font-size:12px;color:var(--mute)}
.pal-hint span{display:flex;gap:4px;align-items:center}

/* ---------- small screens ---------- */
@media (max-width:960px){
  .nav,.search span{display:none}
  .menu-btn{display:grid}
  .top-in{gap:10px}
  .search{min-width:0;padding:0 10px}
  .search kbd{display:none}
  .hero{grid-template-columns:1fr;min-height:0}
  .hero-art{min-height:400px;order:-1;margin-top:8px}
  .hero-txt{padding-top:0}
  .strip>.strip-k{flex-basis:100%;min-height:72px;border-bottom:1px solid var(--line)}
  .strip>*{min-height:76px;flex-basis:40%}
  .strip a{border-bottom:1px solid var(--line)}
  .strip a:nth-of-type(odd){border-inline-start:0}
  .intro{grid-template-columns:1fr;gap:36px;padding-block:72px}
  .cards,.contact-grid{grid-template-columns:1fr}
  .card:nth-child(odd),.contact-cell:nth-child(odd){border-inline-start:0}
  .year{grid-template-columns:1fr;gap:4px;padding-block:32px}
  .year-k{padding:0;text-align:right}
  .row{grid-template-columns:1fr;gap:4px}
  .row-d{text-align:right}
  .article-body.has-toc,.about-body{grid-template-columns:minmax(0,1fr);gap:28px}
  .toc,.facts{position:static;order:-1;max-height:none;border:1px solid var(--line);border-radius:12px;padding:18px 20px}
  .facts{order:2}
  .err{grid-template-columns:1fr;gap:36px}
  .contact-layout{grid-template-columns:1fr;gap:40px}
  .direct{position:static}
  .foot-grid{grid-template-columns:1fr 1fr}
  .foot-about{grid-column:1/-1}
}
@media (max-width:560px){
  .word{font-size:15px}
  .pn{grid-template-columns:1fr}
  .field-row,.topics{grid-template-columns:1fr}
  .prose{font-size:17px}
  .about-id{flex-direction:column;align-items:flex-start;gap:18px}
  .avatar{width:72px;height:72px;font-size:20px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
  .js .rv{opacity:1;transform:none}
  .pulse{display:none}
}
@media print{
  .top,.foot,.pal,.toc,.cta,.article-foot{display:none!important}
  .frame{border:0}
  body{background:#fff;color:#000}
}

.err-code{font-size:12px;color:var(--mute);letter-spacing:.12em;margin-bottom:10px}

@media (min-width:961px){.mnav{display:none!important}}