/* AisthOS · Стройка — единый CSS. Без внешних шрифтов и скриптов. Мобильный сначала. */
:root {
  --ink: #1d2733;
  --ink-soft: #46576b;
  --bg: #f6f7f9;
  --paper: #ffffff;
  --brand: #26384d;
  --brand-dark: #1a2736;
  --accent: #f2a900;
  --accent-dark: #c98a00;
  --line: #d5dbe3;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 17px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
.wrap { max-width: 46rem; margin: 0 auto; padding: 0 1rem; }
.skip { position: absolute; left: -999px; }
.skip:focus { left: 1rem; top: 1rem; background: var(--accent); color: var(--brand-dark); padding: .5rem 1rem; z-index: 10; }
a { color: #1b5fa8; text-underline-offset: 2px; }
a:hover { color: var(--brand); }
a:focus-visible, summary:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }

.site-header { background: var(--brand); color: #fff; border-bottom: 4px solid var(--accent); }
.site-header .wrap { display: flex; flex-wrap: wrap; align-items: center; gap: .5rem 1.25rem; padding-top: .75rem; padding-bottom: .75rem; }
.brand { color: #fff; font-weight: 700; font-size: 1.15rem; text-decoration: none; }
.nav { display: flex; flex-wrap: wrap; gap: .25rem 1rem; }
.nav a { color: #dfe7f0; text-decoration: none; padding: .25rem 0; border-bottom: 2px solid transparent; }
.nav a:hover { color: #fff; }
.nav a[aria-current] { color: #fff; border-bottom-color: var(--accent); }

main { padding-top: 1.25rem; padding-bottom: 2.5rem; }
h1 { font-size: 1.75rem; line-height: 1.25; margin: .5rem 0 .5rem; color: var(--brand-dark); }
h2 { font-size: 1.3rem; line-height: 1.3; margin: 2rem 0 .5rem; color: var(--brand-dark); }
h3 { font-size: 1.1rem; margin: 1.5rem 0 .5rem; }
p, ul, ol { margin: 0 0 1rem; }
.body, .lead { max-width: 70ch; }
.meta { color: var(--ink-soft); font-size: .9rem; }
.lead { font-size: 1.1rem; color: var(--ink-soft); }

.crumbs ol { list-style: none; display: flex; flex-wrap: wrap; gap: .25rem; margin: 0; padding: 0; font-size: .9rem; color: var(--ink-soft); }
.crumbs li + li::before { content: "›"; margin-right: .25rem; }
.crumbs a { color: var(--ink-soft); }

table { border-collapse: collapse; width: 100%; display: block; overflow-x: auto; margin: 0 0 1rem; }
th, td { border: 1px solid var(--line); padding: .4rem .6rem; text-align: left; vertical-align: top; }
th { background: #e9edf2; }
blockquote { margin: 0 0 1rem; padding: .25rem 1rem; border-left: 4px solid var(--accent); background: var(--paper); }
code { background: #e9edf2; padding: 0 .25em; border-radius: 3px; }
pre { background: #1f2a37; color: #f3f6fa; padding: .75rem 1rem; overflow-x: auto; border-radius: 6px; }
pre code { background: none; padding: 0; }

.cta { background: var(--paper); border: 2px solid var(--accent); border-radius: 8px; padding: 1rem 1.25rem; margin: 2rem 0; max-width: 70ch; }
.cta h2 { margin-top: 0; }
.cta-buttons { display: flex; flex-wrap: wrap; gap: .75rem; margin-bottom: 0; }
.btn { display: inline-block; padding: .65rem 1.1rem; border-radius: 6px; border: 2px solid var(--brand); color: var(--brand); font-weight: 600; text-decoration: none; background: var(--paper); }
.btn:hover { background: #e9edf2; color: var(--brand-dark); }
.btn-primary { background: var(--accent); border-color: var(--accent); color: var(--brand-dark); }
.btn-primary:hover { background: var(--accent-dark); border-color: var(--accent-dark); color: #fff; }

.faq details { background: var(--paper); border: 1px solid var(--line); border-radius: 6px; margin: 0 0 .5rem; padding: .6rem 1rem; max-width: 70ch; }
.faq summary { cursor: pointer; font-weight: 600; }
.faq details p { margin: .5rem 0 0; }
.sources, .related { max-width: 70ch; }
.sources li { margin-bottom: .4rem; overflow-wrap: anywhere; }

.cards { list-style: none; padding: 0; margin: 1.5rem 0; display: grid; gap: 1rem; }
.cards li { background: var(--paper); border: 1px solid var(--line); border-radius: 8px; padding: .75rem 1rem; }
.cards h2 { margin: 0 0 .25rem; font-size: 1.15rem; }
.cards p { margin: 0 0 .25rem; }

.site-footer { background: var(--brand-dark); color: #cfd8e3; padding: 1.25rem 0; font-size: .9rem; }
.site-footer a { color: #ffd266; }
.site-footer p { margin: 0 0 .4rem; }

@media (min-width: 48rem) {
  body { font-size: 18px; }
  h1 { font-size: 2.1rem; }
  .cards { grid-template-columns: 1fr 1fr; }
}