/* zlatora.online — single stylesheet. Self-hosted only: no web fonts, no remote assets, no external stylesheet includes. */

:root{
  --f-sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans",sans-serif;
  --f-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;

  --ink:#131a2b;
  --ink-2:#2c3550;
  --muted:#56607a;
  --faint:#7b849b;

  --bg:#ffffff;
  --surface:#f5f7fb;
  --soft:#eaf0fd;
  --line:#dfe5f0;
  --line-2:#c9d3e6;

  --brand:#1f4fd8;
  --brand-dark:#173ca6;
  --brand-ink:#ffffff;
  --accent:#e0912a;
  --accent-soft:#fdf3e3;
  --teal:#0f8f6e;
  --teal-soft:#e6f6f1;
  --warn:#b4451f;
  --warn-soft:#fdeee8;

  --night:#101729;
  --night-2:#1c2748;

  --r-s:8px;
  --r-m:14px;
  --r-l:22px;
  --sh-s:0 1px 2px rgba(19,26,43,.06),0 1px 3px rgba(19,26,43,.08);
  --sh-m:0 4px 12px rgba(19,26,43,.07),0 12px 32px rgba(19,26,43,.06);
  --shell:1280px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:96px}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation:none!important;transition:none!important}}

body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--f-sans);
  font-size:17px;
  line-height:1.68;
  -webkit-font-smoothing:antialiased;
}
img,svg{max-width:100%;height:auto;display:block}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px;border-radius:3px}
hr{border:0;border-top:1px solid var(--line);margin:34px 0}

.skip{position:absolute;left:-9999px;top:0}
.skip:focus{left:8px;top:8px;z-index:60;background:var(--bg);padding:10px 14px;border:2px solid var(--brand);border-radius:var(--r-s)}

.shell{max-width:var(--shell);margin:0 auto;padding:0 20px}

/* ---------- disclosure bar (must stay first in body) ---------- */
.adbar{
  background:var(--night);
  color:#dbe3f5;
  font-size:13.5px;
  line-height:1.5;
  padding:9px 0;
  border-bottom:1px solid rgba(255,255,255,.1);
}
.adbar strong{color:#fff}
.adbar .shell{display:flex;gap:10px;align-items:baseline;flex-wrap:wrap}
.adbar a{color:#a9c2ff}

/* ---------- header ---------- */
.site-head{
  position:sticky;top:0;z-index:40;
  background:rgba(255,255,255,.92);
  backdrop-filter:saturate(140%) blur(8px);
  border-bottom:1px solid var(--line);
}
.head-in{display:flex;align-items:center;gap:18px;min-height:64px}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);font-weight:700;letter-spacing:-.02em;font-size:19px}
.brand:hover{text-decoration:none}
.brand img{width:30px;height:30px}
.brand span small{display:block;font-size:11px;font-weight:600;color:var(--faint);letter-spacing:.08em;text-transform:uppercase;line-height:1.2}
.nav{margin-left:auto;display:flex;gap:4px;overflow-x:auto;scrollbar-width:none}
.nav::-webkit-scrollbar{display:none}
.nav a{
  white-space:nowrap;padding:8px 11px;border-radius:999px;
  color:var(--ink-2);font-size:14.5px;font-weight:550;
}
.nav a:hover{background:var(--surface);text-decoration:none}
.nav a[aria-current="page"]{background:var(--soft);color:var(--brand-dark)}
@media (max-width:900px){
  .head-in{min-height:58px;gap:10px;flex-wrap:wrap;padding-bottom:6px}
  .nav{margin-left:0;width:100%;order:3;padding-bottom:2px}
}

/* ---------- hero ---------- */
.hero{
  background:
    radial-gradient(1100px 420px at 15% -10%,rgba(224,145,42,.22),transparent 60%),
    radial-gradient(900px 420px at 88% 0%,rgba(31,79,216,.35),transparent 62%),
    linear-gradient(160deg,var(--night) 0%,var(--night-2) 100%);
  color:#eef2fb;
  padding:46px 0 40px;
}
.hero .kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;
  color:#ffd9a3;background:rgba(224,145,42,.14);border:1px solid rgba(224,145,42,.35);
  padding:5px 11px;border-radius:999px;
}
.hero h1{
  font-size:clamp(28px,4.6vw,46px);line-height:1.12;letter-spacing:-.025em;
  margin:16px 0 12px;color:#fff;max-width:20em;
}
.hero .lede{font-size:clamp(17px,1.6vw,20px);color:#c6d2ea;max-width:44em;margin:0}
.hero .byline{
  margin-top:20px;padding-top:16px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;flex-wrap:wrap;gap:6px 18px;font-size:14px;color:#aebbd6;
}
.hero .byline b{color:#e7eeff;font-weight:600}
.hero.slim{padding:34px 0 30px}
.hero.slim h1{font-size:clamp(26px,3.6vw,38px)}

/* ---------- layout ---------- */
.wrap{display:grid;gap:34px;padding:34px 0 10px;grid-template-columns:minmax(0,1fr)}
@media (min-width:1060px){
  .wrap{grid-template-columns:230px minmax(0,1fr) 290px;gap:40px}
  .wrap.narrow{grid-template-columns:minmax(0,1fr);max-width:820px}
}
.rail{min-width:0}
@media (max-width:1059px){
  .rail-left{order:2}
  .rail-right{order:3}
  main{order:1}
}
.sticky{position:sticky;top:86px}

/* ---------- toc ---------- */
.toc{border:1px solid var(--line);border-radius:var(--r-m);padding:16px 16px 12px;background:var(--surface)}
.toc h2{font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--faint);margin:0 0 10px}
.toc ol{list-style:none;margin:0;padding:0;counter-reset:t}
.toc li{counter-increment:t;margin:0 0 2px}
.toc a{
  display:block;padding:6px 8px 6px 26px;border-radius:var(--r-s);position:relative;
  font-size:14.5px;color:var(--ink-2);line-height:1.4;
}
.toc a::before{content:counter(t);position:absolute;left:8px;color:var(--faint);font-size:12px;font-variant-numeric:tabular-nums;top:8px}
.toc a:hover{background:#fff;text-decoration:none;color:var(--brand-dark)}

/* ---------- article typography ---------- */
main{min-width:0}
.prose>*:first-child{margin-top:0}
.prose h2{
  font-size:clamp(23px,2.4vw,30px);line-height:1.2;letter-spacing:-.02em;
  margin:46px 0 14px;padding-top:22px;border-top:3px solid var(--soft);
}
.prose h3{font-size:clamp(18.5px,1.8vw,21px);line-height:1.3;margin:32px 0 10px;letter-spacing:-.01em}
.prose h4{font-size:16.5px;margin:24px 0 8px;color:var(--ink-2)}
.prose p{margin:0 0 17px}
.prose p.lede{font-size:19px;color:var(--ink-2)}
.prose ul,.prose ol{margin:0 0 18px;padding-left:0;list-style:none}
.prose ul>li,.prose ol>li{position:relative;padding-left:28px;margin-bottom:9px}
.prose ul>li::before{
  content:"";position:absolute;left:8px;top:.62em;width:7px;height:7px;border-radius:2px;
  background:var(--brand);transform:rotate(45deg);
}
.prose ol{counter-reset:n}
.prose ol>li{counter-increment:n}
.prose ol>li::before{
  content:counter(n);position:absolute;left:0;top:.05em;width:21px;height:21px;border-radius:50%;
  background:var(--soft);color:var(--brand-dark);font-size:12.5px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
}
.prose ul.check>li::before{
  content:"";left:2px;top:.45em;width:14px;height:9px;background:none;border-left:2.5px solid var(--teal);
  border-bottom:2.5px solid var(--teal);border-radius:0;transform:rotate(-45deg);
}
.prose ul.cross>li::before{
  content:"\00d7";left:4px;top:-.05em;width:auto;height:auto;background:none;transform:none;
  color:var(--warn);font-size:19px;font-weight:700;line-height:1.4;border-radius:0;
}
.prose blockquote{
  margin:24px 0;padding:4px 0 4px 20px;border-left:4px solid var(--accent);
  color:var(--ink-2);font-size:17.5px;
}
.prose blockquote cite{display:block;margin-top:8px;font-size:14px;color:var(--muted);font-style:normal}
.prose strong{font-weight:650}
.prose code{font-family:var(--f-mono);font-size:.9em;background:var(--surface);border:1px solid var(--line);border-radius:5px;padding:1px 5px}
.prose a{text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:2px}

.anchor{color:var(--line-2);font-weight:400;text-decoration:none;margin-left:8px;font-size:.7em}
.anchor:hover{color:var(--brand);text-decoration:none}

/* ---------- callouts ---------- */
.callout{
  border:1px solid var(--line);border-left:4px solid var(--brand);background:var(--surface);
  border-radius:var(--r-s);padding:16px 18px;margin:24px 0;font-size:16px;
}
.callout>*:first-child{margin-top:0}
.callout>*:last-child{margin-bottom:0}
.callout .ct{display:block;font-weight:700;font-size:13px;letter-spacing:.06em;text-transform:uppercase;color:var(--brand-dark);margin-bottom:6px}
.callout.warn{border-left-color:var(--warn);background:var(--warn-soft)}
.callout.warn .ct{color:var(--warn)}
.callout.ok{border-left-color:var(--teal);background:var(--teal-soft)}
.callout.ok .ct{color:var(--teal)}
.callout.note{border-left-color:var(--accent);background:var(--accent-soft)}
.callout.note .ct{color:#95601a}

/* ---------- affiliate disclosure box ---------- */
.disclose{
  border:1px solid var(--line-2);background:var(--soft);border-radius:var(--r-m);
  padding:18px 20px;margin:0 0 28px;font-size:15.5px;line-height:1.6;color:var(--ink-2);
}
.disclose h2{
  font-size:13px;letter-spacing:.1em;text-transform:uppercase;color:var(--brand-dark);
  margin:0 0 8px;padding:0;border:0;
}
.disclose p{margin:0 0 8px}
.disclose p:last-child{margin:0}

/* ---------- CTA ---------- */
.cta-wrap{margin:30px 0;padding:22px;border:1px solid var(--line);border-radius:var(--r-l);background:var(--surface);text-align:center}
.cta-wrap h3{margin:0 0 6px;font-size:20px}
.cta-wrap p.sub{margin:0 0 16px;color:var(--muted);font-size:15.5px}
.cta{
  display:inline-flex;flex-direction:column;align-items:center;gap:5px;
  background:linear-gradient(180deg,#2a5ce6 0%,var(--brand-dark) 100%);
  color:var(--brand-ink);font-weight:700;font-size:18px;letter-spacing:-.01em;
  padding:14px 30px;border-radius:999px;border:1px solid #14318c;
  box-shadow:0 2px 0 #10276f,0 8px 20px rgba(23,60,166,.28);
  text-decoration:none;max-width:100%;
}
.cta:hover{background:linear-gradient(180deg,#2453d6 0%,#12318f 100%);text-decoration:none;color:#fff}
.cta:active{transform:translateY(1px);box-shadow:0 1px 0 #10276f}
.cta .cta-tag{
  font-size:11.5px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;
  color:#cddaff;background:rgba(255,255,255,.14);border-radius:999px;padding:2px 9px;
}
.cta.small{font-size:16px;padding:12px 20px;width:100%}
.cta-note{
  margin:10px auto 0;max-width:46em;font-size:13.5px;line-height:1.55;color:var(--muted);
}
.cta-note b{color:var(--ink-2);font-weight:600}

/* ---------- right rail ---------- */
.card{border:1px solid var(--line);border-radius:var(--r-m);background:#fff;box-shadow:var(--sh-s);padding:18px;margin-bottom:20px}
.card h2,.card h3{margin:0 0 10px;font-size:16px;letter-spacing:-.01em}
.card p{margin:0 0 12px;font-size:14.5px;color:var(--ink-2);line-height:1.6}
.card p:last-child{margin-bottom:0}
.card .cta-note{font-size:12.5px;text-align:left;margin-top:8px}
.card.dark{background:linear-gradient(165deg,var(--night),var(--night-2));border-color:#26314f;color:#dde5f7}
.card.dark h2,.card.dark h3{color:#fff}
.card.dark p{color:#b9c6e2}
.spec{list-style:none;margin:0;padding:0;font-size:14.5px}
.spec li{display:flex;justify-content:space-between;gap:12px;padding:7px 0;border-bottom:1px dashed var(--line)}
.spec li:last-child{border-bottom:0}
.spec b{font-weight:600;color:var(--ink)}
.spec span{color:var(--muted);text-align:right}

/* ---------- figures ---------- */
figure{margin:30px 0;border:1px solid var(--line);border-radius:var(--r-m);overflow:hidden;background:#fff;box-shadow:var(--sh-s)}
figure img{width:100%;background:var(--surface)}
figcaption{padding:12px 16px;font-size:14px;color:var(--muted);border-top:1px solid var(--line);background:#fff}
figcaption b{color:var(--ink-2);font-weight:600}

/* ---------- tables ---------- */
.table-scroll{overflow-x:auto;margin:26px 0;border:1px solid var(--line);border-radius:var(--r-m)}
table{border-collapse:collapse;width:100%;font-size:15px;min-width:520px;background:#fff}
th,td{text-align:left;padding:11px 14px;border-bottom:1px solid var(--line);vertical-align:top}
thead th{background:var(--surface);font-size:13px;letter-spacing:.04em;text-transform:uppercase;color:var(--muted)}
tbody tr:last-child td{border-bottom:0}
caption{caption-side:bottom;padding:10px 14px;font-size:13.5px;color:var(--muted);text-align:left}

/* ---------- grids / feature cards ---------- */
.grid{display:grid;gap:16px;margin:26px 0}
.grid.two{grid-template-columns:repeat(auto-fit,minmax(250px,1fr))}
.grid.three{grid-template-columns:repeat(auto-fit,minmax(215px,1fr))}
.tile{border:1px solid var(--line);border-radius:var(--r-m);padding:18px;background:#fff;box-shadow:var(--sh-s)}
.tile h3,.tile h4{margin:0 0 6px;font-size:16.5px}
.tile p{margin:0;font-size:15px;color:var(--ink-2);line-height:1.6}
.tile .num{
  display:inline-flex;align-items:center;justify-content:center;width:30px;height:30px;
  border-radius:9px;background:var(--soft);color:var(--brand-dark);font-weight:700;font-size:15px;margin-bottom:10px;
}

/* ---------- pill row / meta ---------- */
.pills{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 26px;padding:0;list-style:none}
.pills li{
  font-size:13px;font-weight:600;color:var(--ink-2);background:var(--surface);
  border:1px solid var(--line);border-radius:999px;padding:5px 12px;
}
.pills li::before{display:none}

/* ---------- FAQ ---------- */
details.faq{border:1px solid var(--line);border-radius:var(--r-m);background:#fff;margin:0 0 12px;box-shadow:var(--sh-s)}
details.faq summary{
  cursor:pointer;padding:15px 18px;font-weight:600;font-size:16.5px;list-style:none;
  display:flex;justify-content:space-between;gap:14px;align-items:flex-start;
}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary::after{content:"+";color:var(--brand);font-weight:700;font-size:20px;line-height:1.2}
details.faq[open] summary::after{content:"\2212"}
details.faq .body{padding:0 18px 16px;font-size:16px;color:var(--ink-2)}
details.faq .body>*:first-child{margin-top:0}
details.faq .body>*:last-child{margin-bottom:0}

/* ---------- sources ---------- */
.sources{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m);padding:20px 22px;margin:34px 0 0}
.sources h2{font-size:17px;margin:0 0 10px;border:0;padding:0}
.sources ol{font-size:14.5px;color:var(--ink-2)}
.sources li{margin-bottom:7px}
.sources a{word-break:break-word}

/* ---------- next / related links ---------- */
.next{display:grid;gap:14px;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));margin:30px 0 0;padding:0;list-style:none}
.next li{padding:0;margin:0}
.next li::before{display:none}
.next a{
  display:block;height:100%;border:1px solid var(--line);border-radius:var(--r-m);padding:16px;
  background:#fff;box-shadow:var(--sh-s);text-decoration:none;color:var(--ink);
}
.next a:hover{border-color:var(--line-2);box-shadow:var(--sh-m);text-decoration:none}
.next a b{display:block;font-size:16px;margin-bottom:4px;color:var(--brand-dark)}
.next a span{font-size:14px;color:var(--muted);line-height:1.5}

/* ---------- footer ---------- */
.site-foot{margin-top:60px;background:var(--night);color:#b9c6e2;font-size:14.5px;padding:40px 0 26px}
.foot-grid{display:grid;gap:28px;grid-template-columns:repeat(auto-fit,minmax(210px,1fr))}
.site-foot h2{font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:#8d9cbd;margin:0 0 12px;font-weight:700}
.site-foot ul{list-style:none;margin:0;padding:0}
.site-foot li{margin-bottom:8px}
.site-foot a{color:#dbe3f5;text-decoration:none}
.site-foot a:hover{color:#fff;text-decoration:underline}
.site-foot .ident{font-size:14px;line-height:1.7}
.site-foot .ident b{color:#fff}
.foot-legal{
  margin-top:30px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:grid;gap:14px;font-size:13.5px;line-height:1.65;color:#93a2c2;
}
.foot-legal p{margin:0}
.foot-legal strong{color:#cdd8ef}

/* ---------- misc pages ---------- */
.legal-meta{font-size:14px;color:var(--muted);margin:0 0 26px;padding-bottom:16px;border-bottom:1px solid var(--line)}
.err{text-align:center;padding:70px 0 40px;max-width:640px;margin:0 auto}
.err .code{font-size:74px;font-weight:800;letter-spacing:-.04em;color:var(--brand);line-height:1;margin:0}
.bridge{
  min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:14px;text-align:center;padding:40px 22px;
}

/* active table-of-contents entry (set by js/site.js, no storage involved) */
.toc a[aria-current="true"]{background:#fff;color:var(--brand-dark);font-weight:600;box-shadow:inset 3px 0 0 var(--brand)}

/* two-column variant: article plus right rail, no table of contents */
@media (min-width:1060px){
  .wrap.no-left{grid-template-columns:minmax(0,1fr) 290px}
}