/* ursdom.ru: единый файл стилей, без внешних зависимостей */

:root {
  --bg: #f7f6f3;
  --ink: #22303c;
  --deep: #1e3a4f;
  --deep-2: #16303f;
  --earth: #8a6d4b;
  --cta: #d97b29;
  --cta-dark: #b25f14;
  --line: #ddd7cc;
  --card: #ffffff;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  --serif: Georgia, "Times New Roman", serif;
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 1.125rem;
  line-height: 1.65;
}

h1, h2, h3, h4 {
  font-family: var(--sans);
  color: var(--deep);
  line-height: 1.25;
  margin: 1.6em 0 0.6em;
}

h1 { font-size: 1.75rem; margin-top: 0.4em; }
h2 { font-size: 1.4rem; }
h3 { font-size: 1.15rem; }

p, ul, ol { margin: 0 0 1em; }
ul, ol { padding-left: 1.4em; }
li { margin-bottom: 0.35em; }

a { color: var(--deep); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:hover { color: var(--cta-dark); }

:focus-visible {
  outline: 3px solid var(--cta);
  outline-offset: 2px;
  border-radius: 2px;
}

img, svg { max-width: 100%; height: auto; }

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--deep);
  color: #fff;
  padding: 0.6em 1em;
  z-index: 10;
}
.skip-link:focus { left: 8px; top: 8px; }

/* Шапка */

.site-header {
  background: var(--deep);
  color: #fff;
  padding: 0.9rem 1rem;
}

.site-header .inner {
  max-width: 46rem;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.4rem 1.4rem;
  font-family: var(--sans);
}

.logo {
  color: #fff;
  text-decoration: none;
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: 0.04em;
}
.logo:hover { color: #ffd9b0; }

.logo .dot { color: var(--cta); }

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.2rem 1.1rem;
  font-size: 0.95rem;
}

.site-nav a { color: #dbe6ee; text-decoration: none; }
.site-nav a:hover { color: #fff; text-decoration: underline; }

/* Хлебные крошки */

.breadcrumbs {
  max-width: 46rem;
  margin: 0.9rem auto 0;
  padding: 0 1rem;
  font-family: var(--sans);
  font-size: 0.85rem;
  color: var(--earth);
}
.breadcrumbs ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
}
.breadcrumbs li + li::before { content: "›"; margin-right: 0.3rem; color: var(--earth); }
.breadcrumbs a { color: var(--earth); }

/* Основная колонка */

main {
  max-width: 46rem;
  margin: 0 auto;
  padding: 0 1rem 2.5rem;
}

/* TL;DR */

.tldr {
  background: var(--card);
  border: 1px solid var(--line);
  border-left: 5px solid var(--cta);
  border-radius: 6px;
  padding: 0.9rem 1.1rem;
  margin: 1.2rem 0 1.6rem;
}
.tldr strong:first-child {
  font-family: var(--sans);
  color: var(--deep);
  display: block;
  margin-bottom: 0.25rem;
}

/* Таблицы */

.table-wrap { overflow-x: auto; margin: 0 0 1.2rem; }

table {
  border-collapse: collapse;
  width: 100%;
  font-family: var(--sans);
  font-size: 0.95rem;
  background: var(--card);
}
caption {
  font-size: 0.85rem;
  color: var(--earth);
  text-align: left;
  padding-bottom: 0.4rem;
}
th, td {
  border: 1px solid var(--line);
  padding: 0.55rem 0.7rem;
  text-align: left;
  vertical-align: top;
}
th { background: #ece7dd; color: var(--deep); }

/* Схемы */

figure.scheme {
  margin: 1.4rem 0;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0.8rem;
}
figure.scheme svg { display: block; width: 100%; height: auto; }
figcaption {
  font-family: var(--sans);
  font-size: 0.85rem;
  color: var(--earth);
  margin-top: 0.6rem;
}

/* Блок «Что купить» */

.buy-block {
  background: #f0e9df;
  border: 1px solid #e0d5c4;
  border-radius: 8px;
  padding: 1.1rem 1.1rem 1.2rem;
  margin: 1.8rem 0;
  font-family: var(--sans);
}
.buy-block h2, .buy-block h3 {
  margin: 0 0 0.8rem;
  font-size: 1.2rem;
}
.buy-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr));
  gap: 0.8rem;
}
.buy-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0.9rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.buy-card strong { color: var(--deep); }
.buy-card p { margin: 0; font-size: 0.9rem; }
.buy-card .btn { margin-top: auto; }

.btn {
  display: inline-block;
  background: var(--cta);
  color: #fff;
  font-family: var(--sans);
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  text-align: center;
  padding: 0.55em 1em;
  border-radius: 6px;
  transition: background-color 0.15s ease;
}
.btn:hover { background: var(--cta-dark); color: #fff; }

.buy-note {
  font-size: 0.8rem;
  color: var(--earth);
  margin: 0.8rem 0 0;
}

/* FAQ */

.faq details {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0;
  margin-bottom: 0.6rem;
}
.faq summary {
  font-family: var(--sans);
  font-weight: 600;
  color: var(--deep);
  cursor: pointer;
  padding: 0.8rem 1rem;
}
.faq summary:hover { color: var(--cta-dark); }
.faq details > div { padding: 0 1rem 0.9rem; }
.faq details > div p:last-child { margin-bottom: 0; }

/* Перелинковка */

.related {
  border-top: 2px solid var(--line);
  margin-top: 2rem;
  padding-top: 1rem;
  font-family: var(--sans);
}
.related h2 { margin-top: 0.4em; font-size: 1.2rem; }
.related ul { list-style: none; padding: 0; }
.related li {
  margin-bottom: 0.5rem;
  padding-left: 1.1rem;
  position: relative;
}
.related li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 0.5em;
  height: 0.5em;
  border-radius: 50%;
  background: var(--earth);
}

/* Карточки разделов и статей (главная, хабы) */

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  gap: 0.9rem;
  margin: 1.2rem 0;
  padding: 0;
  list-style: none;
}
.card-grid li { margin: 0; }
.card {
  display: block;
  height: 100%;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 1rem;
  text-decoration: none;
  font-family: var(--sans);
  transition: border-color 0.15s ease;
}
.card:hover { border-color: var(--earth); }
.card strong { display: block; color: var(--deep); margin-bottom: 0.3rem; }
.card span { font-size: 0.9rem; color: var(--ink); }

/* Подвал */

.site-footer {
  background: var(--deep-2);
  color: #c8d4dd;
  font-family: var(--sans);
  font-size: 0.9rem;
  padding: 1.6rem 1rem 2rem;
  margin-top: 2rem;
}
.site-footer .inner { max-width: 46rem; margin: 0 auto; }
.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.3rem;
  margin-bottom: 1rem;
  padding: 0;
  list-style: none;
}
.footer-nav a { color: #dbe6ee; }
.footer-nav a:hover { color: #fff; }
.site-footer p { margin: 0.4rem 0 0; }

@media (min-width: 40rem) {
  h1 { font-size: 2.1rem; }
  h2 { font-size: 1.55rem; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
  }
}