/* ============================================================
   ДРЕВНЯЯ РУСЬ — extends styles.css + period.css
   Gold accent variant + citation system + warning boxes
   ============================================================ */

:root {
  --rus-gold: #e8c547;
  --rus-gold-soft: #c9a83a;
  --rus-azure: #5d8fc4;
}

/* Progress bar colour */
.rus .progress-bar { background: var(--rus-gold); }

/* Hero gradient */
.rus .p-hero::before {
  background:
    radial-gradient(circle at 70% 30%, rgba(232,197,71,0.16), transparent 55%),
    radial-gradient(circle at 20% 80%, rgba(212,255,79,0.06), transparent 60%);
}

/* Nav / crumb accents */
.rus .p-toc a:hover,
.rus .p-crumb span:last-child,
.rus .p-hero-title .number,
.rus .p-hero-title h1 .em,
.rus .p-hero-running .row .yr { color: var(--rus-gold); }

.rus .nav-logo .dot { background: var(--rus-gold) !important; }

/* Lead */
.rus .lead-side h2 .em,
.rus .lead-body p:first-child::first-letter { color: var(--rus-gold); }

/* Chapter labels */
.rus .chapter-header .num,
.rus .chapter-header .kicker,
.rus .chapter-text p .violet { color: var(--rus-gold); }

/* ====== Chapter sub-section heading ====== */
.subhead {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin: 0 0 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--hairline);
}
.subhead .ix {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--rus-gold);
  text-transform: uppercase;
  flex-shrink: 0;
}
.subhead .name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.subhead + p { margin-top: 20px; }

.cs-block { margin-top: 56px; }
.cs-block:first-child { margin-top: 0; }

/* ====== In-text citation marker ====== */
.cite {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 18px;
  height: 18px;
  padding: 0 5px;
  margin: 0 1px 0 3px;
  background: rgba(232, 197, 71, 0.18);
  border: 1px solid rgba(232, 197, 71, 0.4);
  color: var(--rus-gold);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  vertical-align: super;
  line-height: 1;
  transition: all 0.18s;
  cursor: pointer;
  text-decoration: none;
  transform: translateY(-2px);
}
.cite:hover {
  background: var(--rus-gold);
  color: #0a0a0a;
  border-color: var(--rus-gold);
}

/* Source chip */
.src-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 18px 0 0;
  padding: 8px 14px;
  background: rgba(232, 197, 71, 0.05);
  border: 1px solid rgba(232, 197, 71, 0.2);
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-muted);
}
.src-chip .icon { color: var(--rus-gold); font-size: 13px; }

/* ====== Dominant element box ====== */
.dominant {
  margin-top: 48px;
  padding: 36px 40px;
  border: 1px solid rgba(232,197,71,0.32);
  border-radius: 8px;
  background:
    radial-gradient(circle at 100% 0%, rgba(232,197,71,0.08), transparent 60%),
    var(--bg-elevated);
  position: relative;
}
.dominant::before {
  content: "★";
  position: absolute;
  top: 16px; right: 20px;
  font-size: 24px;
  color: var(--rus-gold);
}
.dominant .label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--rus-gold);
  margin-bottom: 14px;
}
.dominant h4 {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  font-size: clamp(28px, 3vw, 38px);
  line-height: 1.1;
  margin: 0 0 16px;
  letter-spacing: -0.01em;
}
.dominant p {
  font-size: 17px;
  line-height: 1.55;
  margin: 0;
  max-width: 760px;
  color: var(--ink);
}

/* ====== Visual block — artwork grid ====== */
.visual-block { margin-top: 64px; }
.visual-block .vb-head {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 40px;
  align-items: end;
  margin-bottom: 36px;
}
.visual-block h4 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(28px, 3.4vw, 44px);
  line-height: 0.94;
  margin: 0;
  text-transform: uppercase;
  letter-spacing: -0.02em;
}
.visual-block h4 .em {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  color: var(--rus-gold);
  text-transform: none;
}
.visual-block .vb-intro {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 17px;
  color: var(--ink-muted);
  line-height: 1.4;
  margin: 0;
  max-width: 540px;
}
.vb-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 20px;
}
.vb-item {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.vb-item .img-slot { height: auto; aspect-ratio: 4/5; }
.vb-item.vb-wide .img-slot  { aspect-ratio: 16/10; }
.vb-item.vb-tall .img-slot  { aspect-ratio: 3/4; }
.vb-item.vb-square .img-slot { aspect-ratio: 1/1; }

.vb-cap { display: flex; flex-direction: column; gap: 6px; padding-right: 8px; }
.vb-cap .vb-num {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--rus-gold);
  text-transform: uppercase;
}
.vb-cap .vb-name {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 18px;
  line-height: 1.25;
  color: var(--ink);
  overflow-wrap: break-word;
}
.vb-cap .vb-meta { font-size: 13px; line-height: 1.45; color: var(--ink-muted); overflow-wrap: break-word; }
.vb-cap .vb-loc {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-dim);
  padding-top: 6px;
  border-top: 1px dashed var(--hairline);
}

.vb-s4  { grid-column: span 4; }
.vb-s6  { grid-column: span 6; }
.vb-s8  { grid-column: span 8; }
.vb-s12 { grid-column: span 12; }

@media (max-width: 900px) {
  .vb-s4, .vb-s6, .vb-s8 { grid-column: span 12; }
  .visual-block .vb-head { grid-template-columns: 1fr; gap: 20px; }
}

/* ====== Warning callout ====== */
.warn {
  margin-top: 14px;
  padding: 12px 16px;
  background: rgba(232, 76, 76, 0.08);
  border-left: 3px solid #c93f3f;
  border-radius: 0 4px 4px 0;
  font-size: 13px;
  line-height: 1.45;
  color: var(--ink);
}
.warn .warn-label {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: #f5b3a8;
  margin-right: 8px;
  font-weight: 500;
}

/* ====== Scheme — horizontal arrow flow ====== */
.scheme {
  margin-top: 56px;
  padding: 40px 0;
  border-top: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
}
.scheme .scheme-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--rus-gold);
  text-transform: uppercase;
  margin-bottom: 8px;
}
.scheme h4 {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  font-size: 28px;
  line-height: 1.1;
  margin: 0 0 28px;
  letter-spacing: -0.01em;
}
.scheme-flow {
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
  gap: 14px;
}
.scheme-step { display: flex; align-items: center; gap: 14px; }
.scheme-step .box {
  padding: 14px 18px;
  border: 1px solid var(--hairline-strong);
  border-radius: 4px;
  background: var(--bg-card);
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  line-height: 1.2;
  max-width: 200px;
}
.scheme-step .box.gold {
  background: var(--rus-gold);
  color: #0a0a0a;
  border-color: var(--rus-gold);
}
.scheme-step .arrow {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 300;
  color: var(--ink-muted);
}

.scheme-flow.fanout {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 32px;
  align-items: center;
}
.scheme-fanout-rays {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 10px;
}
.scheme-fanout-rays .ray {
  padding: 14px 16px;
  border: 1px solid var(--hairline);
  border-radius: 4px;
  background: var(--bg-card);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--ink);
  text-transform: uppercase;
  text-align: center;
  line-height: 1.3;
}
@media (max-width: 900px) {
  .scheme-flow.fanout { grid-template-columns: 1fr; }
  .scheme-fanout-rays { grid-template-columns: 1fr 1fr; }
}

/* ====== Self-check question card ====== */
.q-card {
  margin-top: 56px;
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 40px;
  padding: 36px 40px;
  border: 1px dashed var(--hairline-strong);
  border-radius: 8px;
  background: var(--bg-card);
  align-items: start;
}
.q-card .q-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--rus-gold);
  text-transform: uppercase;
}
.q-card .q-label .num {
  display: inline-block;
  margin-right: 12px;
  padding: 4px 8px;
  background: var(--rus-gold);
  color: #0a0a0a;
  border-radius: 4px;
  font-weight: 500;
}
.q-card .q-text {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: clamp(20px, 2vw, 26px);
  line-height: 1.35;
  margin: 0;
  color: var(--ink);
}
@media (max-width: 900px) {
  .q-card { grid-template-columns: 1fr; gap: 20px; padding: 24px; }
}

/* ====== Micro-theme conclusion ====== */
.conclusion {
  margin-top: 56px;
  padding: 32px 0 8px;
  border-top: 3px solid var(--rus-gold);
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 40px;
}
.conclusion .c-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--rus-gold);
  text-transform: uppercase;
}
.conclusion p {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: clamp(20px, 2vw, 26px);
  line-height: 1.35;
  margin: 0;
  max-width: 800px;
}
.conclusion p .em { color: var(--rus-gold); }
@media (max-width: 900px) {
  .conclusion { grid-template-columns: 1fr; gap: 16px; }
}

/* ====== General conclusion ====== */
.general-conclusion {
  padding: var(--section-pad) 0;
  border-top: 1px solid var(--hairline);
  background: radial-gradient(ellipse at 50% 0%, rgba(232,197,71,0.08), transparent 60%);
}
.gc-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
}
.gc-grid .col-left h3 {
  font-family: var(--font-display);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: -0.025em;
  font-size: clamp(36px, 5vw, 80px);
  line-height: 0.9;
  margin: 0;
  overflow-wrap: break-word;
}
.gc-grid .col-left h3 .em {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  color: var(--rus-gold);
  text-transform: none;
}
.gc-grid .col-right p { font-size: 19px; line-height: 1.55; margin: 0 0 20px; }
.gc-grid .col-right p + p { color: var(--ink-muted); }
@media (max-width: 900px) { .gc-grid { grid-template-columns: 1fr; gap: 32px; } }

/* ====== Modern relevance strip ====== */
.relevance {
  padding: var(--section-pad) 0;
  border-top: 1px solid var(--hairline);
}
.rel-head {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: end;
  margin-bottom: 48px;
}
.rel-head h3 {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  font-size: clamp(36px, 5vw, 64px);
  line-height: 1;
  margin: 0;
  letter-spacing: -0.01em;
}
.rel-head h3 .em { color: var(--rus-gold); }
.rel-head .meta {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--ink-muted);
  text-transform: uppercase;
  text-align: right;
}
.rel-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.rel-card {
  padding: 28px 24px;
  border: 1px solid var(--hairline);
  border-radius: 6px;
  background: var(--bg-card);
  min-height: 200px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: border-color 0.2s, transform 0.2s;
}
.rel-card:hover { border-color: var(--rus-gold); transform: translateY(-3px); }
.rel-card .rc-icon {
  font-family: var(--font-display);
  font-size: 36px;
  font-weight: 700;
  color: var(--rus-gold);
  letter-spacing: -0.04em;
  line-height: 1;
}
.rel-card .rc-title {
  font-family: var(--font-display);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-size: 13px;
}
.rel-card .rc-body { font-size: 13px; line-height: 1.5; color: var(--ink-muted); }
@media (max-width: 900px) { .rel-grid { grid-template-columns: 1fr 1fr; } }

/* ====== Sources ====== */
.sources {
  padding: var(--section-pad) 0;
  border-top: 1px solid var(--hairline);
}
.sources-head {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: end;
  margin-bottom: 56px;
}
.sources-head h3 {
  font-family: var(--font-display);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: -0.02em;
  font-size: clamp(40px, 5vw, 80px);
  line-height: 0.92;
  margin: 0;
}
.sources-head h3 .em {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  color: var(--rus-gold);
  text-transform: none;
}
.sources-head p {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 17px;
  line-height: 1.4;
  margin: 0;
  color: var(--ink-muted);
  max-width: 460px;
}

.sources-list { list-style: none; margin: 0; padding: 0; }
.source-item {
  display: grid;
  grid-template-columns: 80px 1fr 160px;
  gap: 32px;
  padding: 24px 0;
  border-top: 1px solid var(--hairline);
  align-items: baseline;
  scroll-margin-top: 120px;
}
.source-item:last-child { border-bottom: 1px solid var(--hairline); }
.source-item.highlight {
  background: rgba(232,197,71,0.06);
  border-color: var(--rus-gold);
  transition: background 1.5s ease;
}
.source-item .si-num {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 36px;
  line-height: 1;
  color: var(--rus-gold);
  letter-spacing: -0.02em;
}
.source-item .si-body .si-author {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 15px;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}
.source-item .si-body .si-title {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 17px;
  line-height: 1.4;
  margin-top: 4px;
}
.source-item .si-body .si-meta { margin-top: 6px; font-size: 13px; color: var(--ink-muted); }
.source-item .si-kind {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--ink-muted);
  text-transform: uppercase;
  text-align: right;
}
.source-item a { color: var(--rus-gold); text-decoration: none; }
.source-item a:hover { text-decoration: underline; }

@media (max-width: 900px) {
  .source-item { grid-template-columns: 60px 1fr; gap: 16px; }
  .source-item .si-kind { grid-column: 2; text-align: left; }
}