/* ─── Tokens ─────────────────────────────────────────── */
:root {
  --paper:      #faf4ea;
  --paper-deep: #f0e6d2;
  --ink:        #1f1612;
  --ink-soft:   #2f2520;
  --mute:       #8a7868;
  --line:       rgba(31, 22, 18, 0.12);
  --line-soft:  rgba(31, 22, 18, 0.06);
  --accent:     #b2462c;
  --accent-soft:#d96046;
  --ochre:      #8a6432;

  --serif: "Fraunces", Georgia, serif;
  --sans:  "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono:  "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}

*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img { display: block; max-width: 100%; }

::selection { background: var(--accent); color: var(--paper); }
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--paper-deep); }
::-webkit-scrollbar-thumb { background: rgba(178, 70, 44, 0.35); border-radius: 8px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent); }

/* ─── Top bar ────────────────────────────────────────── */
.topbar {
  position: sticky; top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 32px;
  background: rgba(250, 244, 234, 0.92);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  border-bottom: 1px solid var(--line);
}
.topbar__back {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--ink);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}
.topbar__back-arrow {
  font-family: var(--serif);
  font-size: 18px;
  transition: transform 0.3s;
}
.topbar__back:hover .topbar__back-arrow { transform: translateX(-4px); }
.topbar__brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--ink);
}
.topbar__brand-mark {
  width: 16px; height: 24px;
  flex-shrink: 0;
}
.topbar__brand-text {
  font-family: var(--serif);
  font-size: 18px;
  letter-spacing: -0.01em;
}

/* ─── Article shell ──────────────────────────────────── */
.article {
  max-width: 760px;
  margin: 0 auto;
  padding: 96px 32px 96px;
}
.article__kicker {
  display: flex;
  align-items: center;
  gap: 14px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--accent);
  margin-bottom: 32px;
}
.article__kicker-line {
  width: 32px; height: 1px;
  background: var(--accent);
}
.article__kicker-mute {
  color: var(--mute);
}
.article__title {
  font-family: var(--serif);
  font-size: clamp(40px, 5.4vw, 76px);
  font-weight: 300;
  line-height: 1.04;
  letter-spacing: -0.025em;
  color: var(--ink);
  margin: 0 0 24px;
}
.article__title em {
  font-style: italic;
  font-weight: 400;
  color: var(--accent);
}
.article__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  padding: 24px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mute);
}
.article__meta-label {
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--ochre);
  display: block;
  margin-bottom: 4px;
}
.article__meta-value {
  font-family: var(--sans);
  font-size: 14px;
  letter-spacing: 0;
  color: var(--ink);
  text-transform: none;
}

.article__abstract {
  margin: 56px 0 64px;
  padding: 32px 36px;
  background: var(--paper-deep);
  border-left: 3px solid var(--accent);
  font-family: var(--serif);
  font-size: 22px;
  font-style: italic;
  line-height: 1.55;
  color: var(--ink-soft);
}
.article__abstract::before {
  content: "АННОТАЦИЯ";
  display: block;
  font-family: var(--mono);
  font-size: 11px;
  font-style: normal;
  letter-spacing: 0.18em;
  color: var(--accent);
  margin-bottom: 16px;
}

/* ─── Body ───────────────────────────────────────────── */
.article__body {
  font-size: 18px;
  line-height: 1.75;
  color: var(--ink-soft);
}
.article__body > p:first-of-type::first-letter {
  font-family: var(--serif);
  font-size: 4em;
  line-height: 0.85;
  float: left;
  padding: 8px 12px 0 0;
  color: var(--accent);
  font-weight: 300;
}
.article__body p {
  margin: 0 0 24px;
}
.article__body h2 {
  font-family: var(--serif);
  font-size: clamp(28px, 3.4vw, 38px);
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -0.018em;
  color: var(--ink);
  margin: 64px 0 24px;
}
.article__body h2 em {
  font-style: italic;
  color: var(--accent);
}
.article__body h2::before {
  content: "§ " counter(section);
  counter-increment: section;
  display: block;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--ochre);
  margin-bottom: 8px;
}
.article__body { counter-reset: section; }

.article__body h3 {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 400;
  letter-spacing: -0.012em;
  color: var(--ink);
  margin: 40px 0 14px;
}
.article__body em { font-style: italic; }
.article__body strong { font-weight: 600; color: var(--ink); }
.article__body a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color 0.2s;
}
.article__body a:hover { color: var(--accent-soft); }

.article__body ul, .article__body ol {
  margin: 16px 0 28px;
  padding-left: 0;
  list-style: none;
}
.article__body ul li {
  position: relative;
  padding-left: 28px;
  margin: 10px 0;
}
.article__body ul li::before {
  content: "→";
  position: absolute;
  left: 0;
  font-family: var(--mono);
  color: var(--accent);
  font-weight: 700;
}
.article__body ol {
  counter-reset: olcount;
}
.article__body ol li {
  position: relative;
  padding-left: 36px;
  margin: 10px 0;
  counter-increment: olcount;
}
.article__body ol li::before {
  content: counter(olcount, decimal-leading-zero);
  position: absolute;
  left: 0;
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--ochre);
  letter-spacing: 0.04em;
  top: 4px;
}

.article__body blockquote {
  margin: 36px 0;
  padding: 24px 32px;
  border-left: 3px solid var(--ochre);
  font-family: var(--serif);
  font-size: 22px;
  font-style: italic;
  line-height: 1.5;
  color: var(--ink);
}
.article__body blockquote cite {
  display: block;
  margin-top: 16px;
  font-family: var(--mono);
  font-size: 11px;
  font-style: normal;
  letter-spacing: 0.16em;
  color: var(--mute);
}

.article__body figure {
  margin: 40px 0;
  padding: 24px 28px;
  background: var(--paper-deep);
  border: 1px solid var(--line);
}
.article__body figure h4 {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--accent);
  text-transform: uppercase;
  margin: 0 0 16px;
}
.article__body figure p {
  margin: 0 0 8px;
  font-size: 16px;
  line-height: 1.6;
}
.article__body figcaption {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--mute);
}

.article__body table {
  width: 100%;
  margin: 32px 0;
  border-collapse: collapse;
  font-size: 15px;
  font-family: var(--sans);
}
.article__body th, .article__body td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
.article__body th {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--mute);
  border-bottom: 1px solid var(--ink);
}
.article__body td.num {
  font-family: var(--mono);
  text-align: right;
  font-variant-numeric: tabular-nums;
  color: var(--ink);
}
.article__body tbody tr:hover {
  background: rgba(178, 70, 44, 0.04);
}

/* ─── Pull-quote ─────────────────────────────────────── */
.pullquote {
  margin: 48px -40px;
  padding: 32px 40px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  font-family: var(--serif);
  font-size: clamp(24px, 2.8vw, 30px);
  font-weight: 300;
  font-style: italic;
  line-height: 1.4;
  letter-spacing: -0.012em;
  color: var(--ink);
}
.pullquote em { color: var(--accent); }

/* ─── References ─────────────────────────────────────── */
.references {
  margin-top: 96px;
  padding-top: 40px;
  border-top: 1px solid var(--line);
}
.references h2 {
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 24px;
}
.references h2::before { content: none !important; }
.references ol {
  list-style: none;
  padding: 0;
  margin: 0;
  counter-reset: refcount;
}
.references ol li {
  position: relative;
  padding-left: 40px;
  margin: 14px 0;
  font-size: 14px;
  line-height: 1.55;
  color: var(--ink-soft);
  counter-increment: refcount;
}
.references ol li::before {
  content: "[" counter(refcount) "]";
  position: absolute;
  left: 0;
  top: 0;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 600;
  color: var(--ochre);
}
.references a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}
.references a:hover { color: var(--accent-soft); }

/* ─── Footer CTA ─────────────────────────────────────── */
.article-cta {
  max-width: 760px;
  margin: 0 auto 0;
  padding: 0 32px 96px;
}
.article-cta__inner {
  padding: 56px 48px;
  background: var(--ink);
  color: var(--paper);
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 40px;
  align-items: center;
}
.article-cta__title {
  font-family: var(--serif);
  font-size: clamp(28px, 3.4vw, 38px);
  font-weight: 300;
  line-height: 1.1;
  letter-spacing: -0.018em;
  margin: 0 0 12px;
}
.article-cta__title em {
  font-style: italic;
  color: var(--accent-soft);
  font-weight: 400;
}
.article-cta__sub {
  font-size: 16px;
  line-height: 1.5;
  color: rgba(250, 244, 234, 0.7);
  margin: 0;
}
.article-cta__btn {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  padding: 18px 24px;
  background: var(--accent);
  color: var(--paper);
  text-decoration: none;
  text-align: center;
  display: inline-flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
  transition: background 0.3s, transform 0.3s;
}
.article-cta__btn:hover {
  background: var(--accent-soft);
  transform: translateY(-2px);
}

/* ─── Footer ─────────────────────────────────────────── */
.article-footer {
  padding: 32px;
  background: var(--ink);
  color: rgba(250, 244, 234, 0.55);
  border-top: 1px solid rgba(250, 244, 234, 0.1);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}
.article-footer a {
  color: rgba(250, 244, 234, 0.7);
  text-decoration: none;
  transition: color 0.3s;
}
.article-footer a:hover { color: var(--accent-soft); }

/* ─── Responsive ─────────────────────────────────────── */
@media (max-width: 720px) {
  .topbar { padding: 12px 20px; }
  .article { padding: 64px 20px 72px; }
  .article__title { font-size: clamp(32px, 9vw, 56px); line-height: 1.05; }
  .article__abstract { padding: 24px; font-size: 18px; margin: 40px -4px 48px; }
  .article__body { font-size: 17px; line-height: 1.7; }
  .article__body > p:first-of-type::first-letter { font-size: 3.4em; }
  .article__body h2 { font-size: 26px; margin: 48px 0 18px; }
  .pullquote { margin: 36px -20px; padding: 28px 24px; font-size: 22px; }
  .article-cta { padding: 0 20px 64px; }
  .article-cta__inner {
    grid-template-columns: 1fr;
    padding: 36px 28px;
    gap: 28px;
  }
  .article-cta__btn { width: 100%; }
  .article-footer { flex-direction: column; align-items: flex-start; padding: 24px 20px; }
  .article__meta { gap: 16px; flex-direction: column; }
  .article__body table { font-size: 13px; }
  .article__body th, .article__body td { padding: 8px 10px; }
}