/* Те же цвета и шрифты, что на главной chatsai.ru — разделы должны выглядеть частью одного сайта */
:root {
  --bg: #f5f6fb;
  --surface: #ffffff;
  --surface-sunken: #f0f1f8;
  --ink: #16172b;
  --ink-muted: #61647c;
  --ink-faint: #9497ad;
  --accent: #4f46e5;
  --accent-hover: #4338ca;
  --accent-ink: #ffffff;
  --accent-soft: #ece9fd;
  --mark: #fff3c4;
  --border: #e2e4f0;
  --shadow: 0 1px 2px rgba(22, 20, 60, 0.04), 0 10px 28px -14px rgba(22, 20, 60, 0.16);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #131325; --surface: #1b1c33; --surface-sunken: #17182c; --ink: #eceefc; --ink-muted: #a3a6c4;
    --ink-faint: #6f7292; --accent: #818cf8; --accent-hover: #939df9; --accent-ink: #14152a; --accent-soft: #818cf822;
    --mark: #5b4a1a; --border: #2b2c48; --shadow: 0 1px 2px rgba(0,0,0,.3), 0 12px 32px -16px rgba(0,0,0,.6);
  }
}
:root[data-theme="dark"] {
  --bg: #131325; --surface: #1b1c33; --surface-sunken: #17182c; --ink: #eceefc; --ink-muted: #a3a6c4;
  --ink-faint: #6f7292; --accent: #818cf8; --accent-hover: #939df9; --accent-ink: #14152a; --accent-soft: #818cf822;
  --mark: #5b4a1a; --border: #2b2c48; --shadow: 0 1px 2px rgba(0,0,0,.3), 0 12px 32px -16px rgba(0,0,0,.6);
}

* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font-family: -apple-system, "Segoe UI", system-ui, Roboto, sans-serif;
  -webkit-font-smoothing: antialiased; line-height: 1.6;
}
a { color: var(--accent); }
a:hover { color: var(--accent-hover); }

.top { background: var(--surface); border-bottom: 1px solid var(--border); }
.top-inner { max-width: 880px; margin: 0 auto; padding: 12px 16px; display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.logo { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); }
.logo-mark {
  width: 34px; height: 34px; border-radius: 10px; background: linear-gradient(135deg, var(--accent), #8b5cf6);
  color: #fff; font-weight: 800; font-size: .85rem; display: flex; align-items: center; justify-content: center;
}
.logo-name { font-weight: 700; }
.top-nav { display: flex; gap: 16px; font-size: .9375rem; }
.top-nav a { text-decoration: none; color: var(--ink-muted); font-weight: 600; }
.top-nav a:hover { color: var(--accent); }

.page { max-width: 880px; margin: 0 auto; padding: 20px 16px 64px; }
.crumbs { font-size: .8125rem; color: var(--ink-faint); margin-bottom: 20px; overflow-wrap: anywhere; }
.crumbs a { color: var(--ink-muted); text-decoration: none; }
.crumbs .sep { margin: 0 6px; }

h1 { font-size: clamp(1.75rem, 1.3rem + 2vw, 2.5rem); line-height: 1.15; letter-spacing: -.02em; margin: 0 0 14px; font-weight: 800; }
h2 { font-size: 1.375rem; line-height: 1.25; margin: 0 0 14px; font-weight: 800; }
h3 { font-size: 1.0625rem; margin: 0 0 6px; }
.lede { color: var(--ink-muted); font-size: 1.125rem; margin: 0 0 24px; max-width: 60ch; }
.hint { color: var(--ink-faint); font-size: .875rem; margin: 12px 0 0; }

.hero-sm { margin-bottom: 40px; }
.block { background: var(--surface); border: 1px solid var(--border); border-radius: 18px; padding: 24px; margin-bottom: 20px; box-shadow: var(--shadow); }
.block p { margin: 0 0 12px; }

.btn {
  font: inherit; font-weight: 700; border-radius: 999px; padding: 13px 24px; border: 1px solid transparent;
  cursor: pointer; text-decoration: none; display: inline-flex; align-items: center; gap: 8px; line-height: 1.2;
}
.btn.primary { background: var(--accent); color: var(--accent-ink); }
.btn.primary:hover { background: var(--accent-hover); color: var(--accent-ink); }
.btn.ghost { background: transparent; color: var(--accent); border-color: var(--border); }
.btn.ghost:hover { border-color: var(--accent); }
.btn.small { padding: 9px 16px; font-size: .875rem; }

.steps { margin: 0; padding-left: 22px; }
.steps li { margin-bottom: 10px; }
.steps.big li { margin-bottom: 14px; }

mark { background: var(--mark); color: inherit; padding: 0 3px; border-radius: 4px; }
.prompt-text {
  background: var(--surface-sunken); border: 1px dashed var(--border); border-radius: 12px; padding: 14px 16px;
  margin: 8px 0 12px; white-space: pre-wrap; overflow-wrap: anywhere; font-size: .9375rem;
}
.prompt-text.big { font-size: 1rem; }

.example-q, .example-a { border-radius: 14px; padding: 14px 16px; margin-bottom: 12px; overflow-wrap: anywhere; }
.example-q { background: var(--accent-soft); }
.example-a { background: var(--surface-sunken); }
.example-q span, .example-a span {
  display: block; font-size: .75rem; text-transform: uppercase; letter-spacing: .06em; color: var(--ink-faint);
  font-weight: 700; margin-bottom: 6px;
}
.example-a p { margin: 0 0 10px; }
.example-a ul { margin: 0 0 10px; padding-left: 20px; }

.related { margin: 0 0 12px; padding-left: 20px; }
.related li { margin-bottom: 6px; }
.related.cols { columns: 2 260px; column-gap: 24px; }

.cards { display: grid; gap: 14px; }
.prompt-card { border: 1px solid var(--border); border-radius: 14px; padding: 16px; background: var(--surface); }
.prompt-card .q { color: var(--ink-muted); margin: 0 0 8px; font-size: .9375rem; }
.prompt-card details summary { cursor: pointer; color: var(--accent); font-weight: 600; font-size: .9375rem; margin-bottom: 4px; }
.card-actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }

.cat-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 12px; }
.cat-tile {
  display: flex; flex-direction: column; gap: 4px; padding: 16px; border: 1px solid var(--border);
  border-radius: 14px; text-decoration: none; color: var(--ink); background: var(--surface-sunken);
}
.cat-tile:hover { border-color: var(--accent); color: var(--ink); }
.cat-name { font-weight: 700; }
.cat-count { color: var(--ink-faint); font-size: .875rem; }

.faq { border-top: 1px solid var(--border); padding: 12px 0; }
.faq summary { cursor: pointer; font-weight: 700; }
.faq p { margin: 8px 0 0; color: var(--ink-muted); }
.warn { color: var(--ink-muted); font-size: .9375rem; margin-top: 12px; }

.cta {
  text-align: center; border-radius: 22px; padding: 32px 20px; margin-top: 28px;
  background: linear-gradient(135deg, var(--accent), #8b5cf6); color: #fff;
}
.cta h2 { color: #fff; }
.cta p { opacity: .9; margin: 0 0 18px; }
.cta .btn.primary { background: #fff; color: #4f46e5; }

.foot { border-top: 1px solid var(--border); background: var(--surface); }
.foot-inner { max-width: 880px; margin: 0 auto; padding: 28px 16px 40px; color: var(--ink-muted); font-size: .9375rem; }
.foot-links a { color: var(--ink-muted); }

@media (max-width: 560px) {
  .block { padding: 18px 16px; border-radius: 14px; }
  .btn { width: 100%; justify-content: center; }
  .card-actions .btn { width: auto; flex: 1 1 auto; }
  .top-nav { gap: 12px; font-size: .875rem; }
}