/* Blog reading system. Versioned because retained static releases keep older runtime assets. */

:root {
  --blog-reading-ink: var(--blog-midnight);
  --blog-reading-copy: var(--blog-slate);
  --blog-reading-accent: var(--blog-blue);
  --blog-reading-surface: var(--white);
  --blog-reading-page: var(--blog-page);
  --blog-reading-border: var(--blog-card-border);
  --blog-reading-shadow: var(--blog-soft-shadow);
  --blog-reading-radius-lg: var(--blog-card-radius);
  --blog-reading-radius-md: 22px;
  --blog-reading-radius-sm: 14px;
  --blog-reading-info: color-mix(in srgb, var(--blog-blue) 7%, var(--white));
  --blog-reading-warning: color-mix(in srgb, var(--case-direction-ai) 9%, var(--white));
}

.blog-reading-progress {
  position: fixed;
  z-index: 1200;
  top: 0;
  right: 0;
  left: 0;
  height: 3px;
  pointer-events: none;
}

.blog-reading-progress span {
  display: block;
  width: 100%;
  height: 100%;
  background: var(--blog-reading-accent);
  transform: scaleX(0);
  transform-origin: left center;
}

/* Hub cards: one editorial lead and a quiet two-column archive. */
.blog-hub .type-accent {
  color: var(--blog-reading-accent);
  background: none;
  font-style: normal;
}

.blog-featured {
  min-height: 540px;
  border: 1px solid var(--blog-reading-border);
  border-radius: var(--blog-reading-radius-lg);
  background: var(--blog-reading-surface);
  box-shadow: var(--blog-reading-shadow);
}

.blog-featured__media { border-radius: 22px; }
.blog-featured__meta b,
.blog-featured__meta a { color: var(--blog-reading-accent); }
.blog-featured__date { display: block; margin: 0 0 18px; color: var(--blog-reading-copy); font-size: 14px; }

.blog-hub .blog-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px; }
.blog-hub .blog-card { min-height: 300px; border: 1px solid var(--blog-reading-border); border-radius: var(--blog-reading-radius-md); background: var(--blog-reading-surface); box-shadow: var(--blog-reading-shadow); }
.blog-hub .blog-card > a { display: grid; min-height: 300px; grid-template-columns: minmax(170px, .82fr) minmax(0, 1.18fr); }
.blog-hub .blog-card__media { height: 100%; min-height: 300px; aspect-ratio: auto; }
.blog-hub .blog-card__content { padding: 24px 24px 22px; }
.blog-hub .blog-card h3 { min-height: 0; font-size: clamp(22px, 2vw, 28px); -webkit-line-clamp: 4; }
.blog-hub .blog-card p { margin-top: 15px; -webkit-line-clamp: 4; }
.blog-card__footer { display: flex; align-items: center; justify-content: space-between; gap: 14px; margin-top: auto; padding-top: 20px; color: var(--blog-reading-copy); font-size: 13px; }
.blog-card__read { color: var(--blog-reading-accent); font-weight: 700; }
.blog-subscribe__icon { background: var(--blog-reading-accent); }

/* Article first screen. */
.blog-article {
  width: min(1180px, calc(100% - 48px));
  margin: 0 auto;
  padding: 142px 0 104px;
}

.blog-article .blog-breadcrumbs {
  max-width: 920px;
  margin: 0 auto 42px;
  color: var(--blog-reading-copy);
  font-size: 14px;
}

.blog-article > header {
  max-width: 920px;
  margin: 0 auto;
  text-align: center;
}

.blog-article__meta {
  display: flex;
  justify-content: center;
  gap: 9px;
  margin: 0 0 20px;
  color: var(--blog-reading-copy);
  font-size: 13px;
  font-weight: 650;
}

.blog-article__meta a { color: var(--blog-reading-accent); text-decoration: none; }
.blog-article h1 { margin: 0; font-size: clamp(39px, 4.6vw, 62px); line-height: 1.06; text-wrap: balance; }
.blog-article .blog-lead { max-width: 790px; margin: 24px auto 0; color: var(--blog-reading-copy); font-size: clamp(17px, 1.45vw, 20px); line-height: 1.62; }

.blog-article .blog-author {
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: center;
  gap: 28px;
  margin: 28px 0 0;
  color: var(--blog-reading-copy);
  font-size: 13px;
}

.blog-author > span { display: flex; flex-direction: column; text-align: left; }
.blog-author strong { color: var(--blog-reading-ink); font-size: 14px; }
.blog-author small { margin-top: 2px; color: var(--blog-reading-copy); font-size: 12px; }

.blog-hero-figure { margin: 56px 0 0; }
.blog-article .blog-hero {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  object-position: center;
  border-radius: var(--blog-reading-radius-lg);
}

.blog-hero-figure figcaption { max-width: 790px; margin: 12px auto 0; color: var(--blog-reading-copy); font-size: 11px; line-height: 1.5; }

/* Reading layout and automatic table of contents. */
.blog-article-layout {
  display: grid;
  grid-template-columns: 220px minmax(0, 760px);
  justify-content: center;
  align-items: start;
  gap: clamp(48px, 7vw, 90px);
  margin-top: clamp(58px, 7vw, 90px);
}

.blog-toc { position: sticky; top: 104px; padding-top: 4px; }
.blog-toc > p { margin: 0; padding-bottom: 14px; border-bottom: 1px solid var(--blog-reading-border); color: var(--blog-reading-ink); font-size: 11px; font-weight: 750; letter-spacing: .08em; text-transform: uppercase; }
.blog-toc ol { display: grid; gap: 12px; margin: 18px 0 0; padding: 0; list-style: none; counter-reset: toc; }
.blog-toc li { counter-increment: toc; }
.blog-toc a { display: grid; grid-template-columns: 27px minmax(0, 1fr); gap: 8px; color: var(--blog-reading-copy); font-size: 12px; line-height: 1.45; text-decoration: none; transition: color 160ms ease; }
.blog-toc a::before { content: counter(toc, decimal-leading-zero); color: color-mix(in srgb, var(--blog-reading-copy) 62%, var(--white)); font-size: 10px; font-weight: 750; }
.blog-toc a:hover { color: var(--blog-reading-accent); }

/* Article typography and rhythm. */
.blog-prose {
  min-width: 0;
  max-width: none;
  margin: 0;
  color: var(--blog-reading-copy);
  font-size: 17px;
  line-height: 1.82;
  counter-reset: article-section;
}

.blog-content-section { margin-top: clamp(58px, 7vw, 82px); scroll-margin-top: 100px; }
.blog-content-section:first-of-type { margin-top: 0; }
.blog-content-section > h2 { margin: 0; counter-increment: article-section; }
.blog-callout--summary + .blog-content-section > h2 { margin-top: 25px; }
.blog-content-section > h2::before { display: block; margin-bottom: 10px; color: var(--blog-reading-accent); content: "Раздел " counter(article-section, decimal-leading-zero); font-size: 11px; font-weight: 750; letter-spacing: .1em; text-transform: uppercase; }
.blog-prose h2 { color: var(--blog-reading-ink); font-size: calc(var(--type-h2-size) + var(--desktop-type-offset)); line-height: var(--type-h2-leading); text-wrap: balance; }
.blog-prose h3 { margin: 42px 0 0; color: var(--blog-reading-ink); font-size: calc(var(--type-h3-size) + var(--desktop-type-offset)); line-height: var(--type-h3-leading); }
.blog-prose p { margin: 22px 0 0; }
.blog-prose a { color: var(--blog-reading-accent); text-decoration-color: color-mix(in srgb, var(--blog-reading-accent) 32%, transparent); text-decoration-thickness: 1px; text-underline-offset: 3px; }
.blog-prose ul,
.blog-prose ol { display: grid; gap: 11px; margin: 24px 0 0; padding-left: 23px; }
.blog-prose li { padding-left: 5px; }
.blog-prose li::marker { color: var(--blog-reading-accent); font-weight: 700; }
.blog-prose hr { margin: 58px 0; border: 0; border-top: 1px solid var(--blog-reading-border); }

/* Summary and callouts. */
.blog-callout {
  margin: 34px 0 0;
  padding: 24px 26px;
  border-left: 3px solid var(--blog-reading-accent);
  background: var(--blog-reading-info);
  color: var(--blog-reading-copy);
}

.blog-prose > .blog-callout:first-child,
.blog-callout--summary {
  margin-top: 0;
  padding: clamp(28px, 4vw, 42px);
  border-left-color: var(--blog-reading-accent);
  background: var(--blog-reading-surface);
  box-shadow: var(--blog-reading-shadow);
}

.blog-callout--summary strong { color: var(--blog-reading-accent); font-size: 12px; letter-spacing: .1em; text-transform: uppercase; }
.blog-callout--warning { border-left-color: var(--case-direction-ai); background: var(--blog-reading-warning); }
.blog-callout--warning strong { color: var(--blog-reading-ink); }
.blog-callout p:first-child { margin-top: 0; }
.blog-callout ul { margin-top: 16px; }

/* A real table: semantic markup, readable cells, horizontal scroll on narrow screens. */
.blog-table-wrap {
  max-width: 100%;
  margin-top: 34px;
  overflow-x: auto;
  border: 1px solid var(--blog-reading-border);
  border-radius: 18px;
  background: var(--blog-reading-surface);
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.blog-table-wrap:focus-visible { outline: 3px solid color-mix(in srgb, var(--blog-reading-accent) 24%, transparent); outline-offset: 3px; }
.blog-table-wrap table { width: 100%; min-width: 760px; border-collapse: collapse; color: var(--blog-reading-copy); font-size: 13px; line-height: 1.55; }
.blog-table-wrap th,
.blog-table-wrap td { padding: 16px 18px; border-right: 1px solid var(--blog-reading-border); border-bottom: 1px solid var(--blog-reading-border); text-align: left; vertical-align: top; }
.blog-table-wrap th:last-child,
.blog-table-wrap td:last-child { border-right: 0; }
.blog-table-wrap tbody tr:last-child td { border-bottom: 0; }
.blog-table-wrap th { color: var(--blog-reading-ink); background: var(--blog-reading-page); font-size: 11px; font-weight: 750; letter-spacing: .02em; }
.blog-table-wrap tbody tr:nth-child(even) { background: color-mix(in srgb, var(--blog-reading-page) 58%, var(--white)); }

/* Checklists keep native disabled checkboxes and avoid a wall of cards. */
.blog-prose .contains-task-list { gap: 0; padding: 0; list-style: none; border-top: 1px solid var(--blog-reading-border); }
.blog-prose .task-list-item { display: grid; grid-template-columns: 22px minmax(0, 1fr); gap: 10px; padding: 12px 0; border-bottom: 1px solid var(--blog-reading-border); list-style: none; }
.blog-prose .task-list-item::marker { content: ""; }
.blog-prose .task-list-item-checkbox { width: 16px; height: 16px; margin: 6px 0 0; accent-color: var(--blog-reading-accent); }

/* Questions, sources, and the single final CTA. */
.blog-content-section--questions { padding: clamp(30px, 4vw, 46px); border: 1px solid var(--blog-reading-border); border-radius: var(--blog-reading-radius-lg); background: var(--blog-reading-info); }
.blog-content-section--questions > h2::before { content: "Сохраните перед обсуждением"; }
.blog-content-section--questions > ol { padding: 0; list-style: none; counter-reset: questions; }
.blog-content-section--questions > ol > li { display: grid; grid-template-columns: 34px minmax(0, 1fr); gap: 12px; padding: 14px 0; border-bottom: 1px solid var(--blog-reading-border); counter-increment: questions; }
.blog-content-section--questions > ol > li:last-child { border-bottom: 0; }
.blog-content-section--questions > ol > li::before { color: var(--blog-reading-accent); content: counter(questions, decimal-leading-zero); font-size: 11px; font-weight: 800; }
.blog-content-section--questions > ol > li::marker { content: ""; }

.blog-content-section--sources { margin-top: 64px; padding-top: 34px; border-top: 1px solid var(--blog-reading-border); }
.blog-content-section--sources > h2 { font-size: 24px; }
.blog-content-section--sources > h2::before { content: "Проверяемые материалы"; }
.blog-content-section--sources ol { gap: 16px; margin-top: 24px; }
.blog-content-section--sources li { color: var(--blog-reading-copy); font-size: 12px; line-height: 1.55; }
.blog-content-section--sources a { color: var(--blog-reading-accent); font-weight: 650; }

.blog-content-section--cta {
  display: block;
  width: 100%;
  margin-top: clamp(64px, 8vw, 88px);
  padding: clamp(30px, 4vw, 42px);
  border: 1px solid var(--blog-reading-border);
  border-top: 4px solid var(--blog-reading-accent);
  border-radius: var(--blog-reading-radius-lg);
  color: var(--blog-reading-copy);
  background: var(--blog-reading-surface);
  box-shadow: var(--blog-reading-shadow);
}

.blog-content-section--cta > h2 { max-width: 640px; margin-bottom: 14px; color: var(--blog-reading-ink); font-size: calc(var(--type-h3-size) + var(--desktop-type-offset)); line-height: var(--type-h3-leading); }
.blog-content-section--cta > h2::before { color: var(--blog-reading-accent); content: "Следующий шаг"; }
.blog-content-section--cta p { max-width: 650px; margin-top: 0; color: var(--blog-reading-copy); }
.blog-content-section--cta > p + p { margin-top: 24px; }
.blog-content-section--cta a { display: inline-flex; min-height: 48px; align-items: center; justify-content: center; padding: 0 22px; border-radius: 12px; color: var(--white); background: var(--blog-reading-accent); box-shadow: 0 10px 24px color-mix(in srgb, var(--blog-reading-accent) 18%, transparent); font-weight: 750; text-align: center; text-decoration: none; transition: background 180ms ease, transform 180ms ease; }
.blog-content-section--cta a:hover { background: var(--blue-deep, var(--midnight)); transform: translateY(-1px); }

@media (max-width: 1000px) {
  .blog-article-layout { grid-template-columns: minmax(0, 760px); gap: 42px; }
  .blog-toc { position: static; padding: 22px 24px; border: 1px solid var(--blog-reading-border); border-radius: 18px; background: var(--blog-reading-surface); }
  .blog-toc ol { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 760px) {
  .blog-featured { min-height: 0; }
  .blog-hub .blog-grid { grid-template-columns: 1fr; }
  .blog-hub .blog-card > a { min-height: 0; grid-template-columns: 1fr; }
  .blog-hub .blog-card__media { height: auto; min-height: 0; aspect-ratio: 16 / 9; }
  .blog-hub .blog-card__content { padding: 20px 20px 22px; }
  .blog-hub .blog-card p { display: -webkit-box; }

  .blog-article { width: calc(100% - 32px); padding-top: 108px; }
  .blog-article .blog-breadcrumbs { margin-bottom: 30px; }
  .blog-article > header { text-align: left; }
  .blog-article__meta { justify-content: flex-start; }
  .blog-article h1 { font-size: 37px; line-height: 1.08; }
  .blog-article .blog-lead { margin-top: 19px; font-size: 16px; line-height: 1.65; }
  .blog-article .blog-author { flex-direction: column; align-items: flex-start; gap: 8px; margin-top: 22px; }
  .blog-hero-figure { margin-top: 38px; }
  .blog-article .blog-hero { border-radius: 20px; }
  .blog-hero-figure figcaption { font-size: 10px; }
  .blog-article-layout { margin-top: 48px; }
  .blog-toc { padding: 20px; }
  .blog-toc ol { grid-template-columns: 1fr; }
  .blog-prose { font-size: 16px; line-height: 1.75; }
  .blog-prose h2 { font-size: 29px; }
  .blog-prose h3 { font-size: 24px; }
  .blog-callout--summary,
  .blog-content-section--questions { padding: 26px 22px; }
  .blog-table-wrap { margin-right: -14px; margin-left: -14px; border-radius: 14px; }
  .blog-table-wrap table { min-width: 720px; }
  .blog-content-section--cta { padding: 28px 22px; border-radius: var(--blog-reading-radius-md); }
  .blog-content-section--cta a { width: 100%; justify-content: center; text-align: center; }
}

@media (max-width: 430px) {
  .blog-article h1 { font-size: clamp(34px, 9.5vw, 37px); }
  .blog-card__footer { align-items: flex-start; flex-direction: column; gap: 6px; }
}

@media (prefers-reduced-motion: reduce) {
  .blog-toc a,
  .blog-content-section--cta a,
  .blog-featured__media img,
  .blog-card__media img { transition: none; }
  .blog-featured:hover .blog-featured__media img,
  .blog-card:hover .blog-card__media img { transform: none; }
}