/* zlatoven.online — hand-written stylesheet.
   No @import, no web fonts, no remote assets. Every byte is served from this origin. */

:root{
  --ink:#1a1a1a;
  --ink-2:#2f3b4d;
  --muted:#5b6878;
  --bg:#f0f4f8;
  --surface:#ffffff;
  --soft:#e2e8f0;
  --line:#cbd5e1;
  --line-2:#dcdcdc;
  --brand:#111111;
  --accent:#00875c;
  --accent-2:#00b779;
  --accent-soft:#e3f5ee;
  --warn:#b3122f;
  --warn-soft:#fdecef;
  --note:#8a5a00;
  --note-soft:#fdf4e3;
  --radius:10px;
  --maxw:1180px;
  --measure:70ch;
  --edge:clamp(16px,3.5vw,40px);
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,
         "Noto Sans","Liberation Sans",system-ui,sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"DejaVu Sans Mono",monospace;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font);
  font-size:clamp(1rem,.97rem + .18vw,1.075rem);
  line-height:1.68;
  display:flex;
  flex-direction:column;
  min-height:100vh;
}
img,svg{max-width:100%;height:auto;display:block}
a{color:#0b5d8a;text-decoration:underline;text-underline-offset:2px}
a:hover{color:#08425f}
:focus-visible{outline:3px solid #0b5d8a;outline-offset:2px}

h1,h2,h3,h4{line-height:1.25;color:var(--brand);margin:0 0 .5em;font-weight:700;letter-spacing:-.01em}
h1{font-size:clamp(1.8rem,1.35rem + 1.9vw,2.6rem);margin-bottom:.35em}
h2{font-size:clamp(1.35rem,1.15rem + .9vw,1.8rem);margin-top:2.2em}
h3{font-size:clamp(1.1rem,1.02rem + .45vw,1.3rem);margin-top:1.8em}
h4{font-size:1.02rem;margin-top:1.5em}
p,ul,ol,table,figure,dl{margin:0 0 1.1em}
ul,ol{padding-left:1.35em}
li{margin-bottom:.4em}
strong{font-weight:700;color:var(--brand)}
small{font-size:.85em}
code{font-family:var(--mono);font-size:.9em;background:var(--soft);padding:.1em .35em;border-radius:4px}
hr{border:0;border-top:1px solid var(--line);margin:2.2em 0}

/* ---------- layout ---------- */
.shell{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:var(--edge)}
.wrap{flex:1 0 auto;width:100%}
.cols{
  width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:var(--edge);
  display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:clamp(24px,3vw,48px);
  align-items:start;padding-block:clamp(24px,3vw,40px);
}
main{min-width:0}
main>*{max-width:var(--measure)}
main>figure,main>.table-scroll,main>.cardgrid,main>.promo{max-width:none}
.rail{min-width:0;display:flex;flex-direction:column;gap:20px;position:sticky;top:16px}
@media (max-width:900px){
  .cols{grid-template-columns:minmax(0,1fr)}
  .rail{position:static;order:2}
}

/* ---------- top disclosure bar (above the fold, first element in body) ---------- */
.topbar{
  background:#111111;color:#ffffff;
  font-size:.86rem;line-height:1.5;
  padding:9px 0;
}
.topbar .shell{display:flex;gap:10px;align-items:flex-start;justify-content:center;text-align:center;flex-wrap:wrap}
.topbar a{color:#9fe3c8}
.topbar .tag{
  display:inline-block;background:#00875c;color:#fff;border-radius:4px;
  padding:1px 7px;font-size:.74rem;font-weight:700;letter-spacing:.04em;text-transform:uppercase;
  white-space:nowrap;
}

/* ---------- header ---------- */
.site-head{background:var(--surface);border-bottom:1px solid var(--line)}
.site-head .shell{display:flex;align-items:center;gap:16px;flex-wrap:wrap;padding-block:12px}
.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;color:var(--brand)}
.brand:hover{text-decoration:none}
.brand svg{width:30px;height:30px;flex:none}
.brand-name{font-weight:800;font-size:1.12rem;letter-spacing:-.02em;line-height:1.1}
.brand-sub{display:block;font-weight:400;font-size:.72rem;color:var(--muted);letter-spacing:0}
.site-nav{margin-left:auto;display:flex;flex-wrap:wrap;gap:4px 16px;font-size:.88rem}
.site-nav a{color:var(--ink-2);text-decoration:none}
.site-nav a:hover,.site-nav a[aria-current="page"]{color:var(--brand);text-decoration:underline}

/* ---------- disclosure blocks ---------- */
.disclosure{
  border:1px solid var(--accent);border-left-width:5px;
  background:var(--accent-soft);
  border-radius:var(--radius);
  padding:16px 18px;margin:0 0 1.6em;
  font-size:.94rem;
}
.disclosure h2,.disclosure h3,.disclosure p:first-child strong{margin-top:0}
.disclosure .disclosure-h{
  display:block;font-weight:800;color:#0a5c40;font-size:.78rem;
  letter-spacing:.06em;text-transform:uppercase;margin-bottom:6px;
}
.disclosure p:last-child{margin-bottom:0}

.notice{
  border:1px solid var(--line);border-left:5px solid var(--muted);
  background:var(--surface);border-radius:var(--radius);
  padding:16px 18px;margin:0 0 1.4em;font-size:.94rem;
}
.notice p:last-child{margin-bottom:0}
.notice-warn{border-left-color:var(--warn);background:var(--warn-soft)}
.notice-note{border-left-color:var(--note);background:var(--note-soft)}
.notice .notice-h{display:block;font-weight:700;color:var(--brand);margin-bottom:5px}

/* ---------- article meta ---------- */
.meta{
  font-size:.88rem;color:var(--muted);margin:0 0 1.4em;
  padding-bottom:1em;border-bottom:1px solid var(--line);
}
.meta .byline{color:var(--ink-2);font-weight:600}
.lede{font-size:1.1em;color:var(--ink-2)}

/* ---------- table of contents ---------- */
.toc{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:16px 18px;font-size:.9rem;
}
.toc h2{font-size:.78rem;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);margin:0 0 8px}
.toc ol{margin:0;padding-left:1.2em}
.toc li{margin-bottom:.3em}
.toc a{color:var(--ink-2);text-decoration:none}
.toc a:hover{text-decoration:underline;color:var(--brand)}

/* ---------- calls to action ---------- */
.cta-block{margin:1.6em 0 2em}
.btn{
  display:inline-block;max-width:100%;
  background:var(--accent);color:#ffffff;
  border:1px solid #00694733;border-bottom:3px solid #00553b;
  border-radius:8px;
  padding:13px 24px;
  font-weight:700;font-size:1rem;line-height:1.3;
  text-align:center;text-decoration:none;
}
.btn:hover{background:#00714d;color:#fff;text-decoration:none}
.btn-full{display:block;width:100%}
.btn-outline{background:var(--surface);color:var(--brand);border:1px solid var(--line);border-bottom:3px solid var(--line)}
.btn-outline:hover{background:var(--soft);color:var(--brand)}
.partner-label{
  display:block;margin-top:7px;
  font-size:.76rem;font-weight:700;letter-spacing:.05em;text-transform:uppercase;
  color:#0a5c40;
}
.cta-note{
  margin:6px 0 0;font-size:.82rem;line-height:1.5;color:var(--muted);
  max-width:46ch;
}
.btn-full+.partner-label,.btn-full~.cta-note{text-align:center;max-width:none}

/* ---------- promo panel ---------- */
.promo{
  background:var(--surface);border:1px solid var(--line);border-top:4px solid var(--accent);
  border-radius:var(--radius);padding:20px 22px;margin:2em 0;
}
.promo h2,.promo h3{margin-top:0}
.promo p{font-size:.95rem}
.promo .cta-block{margin-bottom:0}

/* ---------- sidebar cards ---------- */
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:16px 18px;font-size:.9rem;
}
.card h2,.card h3{font-size:.95rem;margin:0 0 .6em}
.card p:last-child,.card ul:last-child{margin-bottom:0}
.card dl{margin:0;font-size:.88rem}
.card dt{font-weight:700;color:var(--brand);margin-top:.7em}
.card dt:first-child{margin-top:0}
.card dd{margin:0;color:var(--muted)}

/* ---------- figures ---------- */
figure{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:18px;margin:1.8em 0;
}
figure svg{width:100%;height:auto;margin-inline:auto}
figcaption{
  margin-top:12px;padding-top:10px;border-top:1px solid var(--line-2);
  font-size:.85rem;line-height:1.55;color:var(--muted);
}
figcaption b{color:var(--ink-2)}

/* ---------- tables ---------- */
.table-scroll{overflow-x:auto;margin:1.5em 0}
table{border-collapse:collapse;width:100%;font-size:.92rem;background:var(--surface)}
caption{text-align:left;font-size:.85rem;color:var(--muted);padding-bottom:8px}
th,td{border:1px solid var(--line);padding:9px 12px;text-align:left;vertical-align:top}
thead th{background:var(--soft);color:var(--brand);font-weight:700}

/* ---------- definition / FAQ ---------- */
.faq{margin:1.5em 0}
.faq details{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:0;margin-bottom:10px;
}
.faq summary{
  padding:13px 18px;font-weight:700;color:var(--brand);cursor:pointer;list-style-position:inside;
}
.faq details[open] summary{border-bottom:1px solid var(--line-2)}
.faq .faq-a{padding:14px 18px 2px}
.faq .faq-a p:last-child{margin-bottom:1em}

/* ---------- source list ---------- */
.sources{font-size:.9rem}
.sources li{margin-bottom:.6em}
.sources .src-note{color:var(--muted)}

/* ---------- footer ---------- */
.site-foot{
  flex:none;background:#111111;color:#c9d3df;
  font-size:.88rem;line-height:1.6;
  padding-block:32px 24px;margin-top:40px;
}
.site-foot a{color:#9fe3c8;text-decoration:none}
.site-foot a:hover{text-decoration:underline}
.foot-cols{
  display:grid;gap:24px 32px;
  grid-template-columns:repeat(auto-fit,minmax(215px,1fr));
  padding-bottom:22px;border-bottom:1px solid #2c3442;
}
.foot-cols h2{
  font-size:.76rem;letter-spacing:.07em;text-transform:uppercase;
  color:#8b9aab;margin:0 0 9px;font-weight:700;
}
.foot-cols ul{list-style:none;margin:0;padding:0}
.foot-cols li{margin-bottom:.35em}
.foot-cols address{font-style:normal;color:#c9d3df}
.foot-legal{padding-top:18px;font-size:.82rem;color:#8b9aab}
.foot-legal p{margin:0 0 .6em}
.foot-legal p:last-child{margin-bottom:0}

/* ---------- misc ---------- */
.skip{
  position:absolute;left:-9999px;top:0;background:#fff;color:#111;
  padding:10px 16px;z-index:99;
}
.skip:focus{left:8px;top:8px}
.updated{font-size:.85rem;color:var(--muted)}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 1.2em;padding:0;list-style:none}
.tag-row li{
  background:var(--soft);color:var(--ink-2);border-radius:20px;
  padding:3px 12px;font-size:.8rem;margin:0;
}
.center{text-align:center}
.legal-body h2{margin-top:2em}
.legal-body dl dt{font-weight:700;color:var(--brand);margin-top:1em}
.legal-body dl dd{margin:0 0 .3em}

@media print{
  .topbar,.site-nav,.rail,.cta-block,.promo{display:none}
  body{background:#fff}
}