:root {
  color-scheme: dark;
  --bg: #0b0f0e;
  --surface: rgba(18, 24, 23, 0.92);
  --surface-soft: rgba(255, 255, 255, 0.045);
  --text: #edf2ec;
  --muted: #a8b3ae;
  --line: rgba(255, 255, 255, 0.1);
  --amber: #e1a45a;
  --cyan: #7bb7b1;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 70% 12%, rgba(225, 164, 90, 0.13), transparent 26rem),
    linear-gradient(135deg, #070a0a, #111715 48%, #090c0c);
  color: var(--text);
}

.doc-shell {
  display: grid;
  grid-template-columns: 16rem minmax(0, 1fr);
  min-height: 100vh;
}

.doc-nav {
  position: sticky;
  top: 0;
  display: grid;
  align-content: start;
  gap: 0.35rem;
  height: 100vh;
  padding: 1rem;
  background: rgba(8, 12, 11, 0.82);
  box-shadow: 1px 0 0 var(--line);
}

.doc-nav strong {
  margin-bottom: 1rem;
  font-size: 1.05rem;
}

.doc-nav a {
  min-height: 2.6rem;
  padding: 0.7rem 0.75rem;
  border-radius: 0.45rem;
  color: #d8e2dc;
  text-decoration: none;
}

.doc-nav a:hover,
.doc-nav a[aria-current="page"] {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text);
}

.doc-page {
  width: min(72rem, 100%);
  padding: clamp(1rem, 3vw, 2.5rem);
}

.hero-doc,
section {
  margin-bottom: 1rem;
  padding: clamp(1rem, 2.5vw, 1.35rem);
  border-radius: 0.65rem;
  background: var(--surface);
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.34), 0 1px 0 rgba(255, 255, 255, 0.05) inset;
}

.hero-doc {
  padding-top: clamp(1.4rem, 5vw, 3rem);
  padding-bottom: clamp(1.4rem, 5vw, 3rem);
}

.eyebrow {
  color: var(--amber);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 52rem;
  margin-bottom: 0.75rem;
  font-size: clamp(2.1rem, 6vw, 4.8rem);
  line-height: 0.98;
  text-wrap: balance;
  overflow-wrap: anywhere;
}

h2 {
  color: #f3f6f1;
}

h3 {
  margin-bottom: 0.35rem;
  color: #f0c178;
}

p,
li,
td {
  color: var(--muted);
  line-height: 1.6;
  text-wrap: pretty;
  overflow-wrap: anywhere;
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
}

.grid > div {
  min-width: 0;
  padding: 0.85rem;
  border-radius: 0.5rem;
  background: var(--surface-soft);
  box-shadow: 0 0 0 1px var(--line) inset;
}

.timeline {
  display: grid;
  gap: 0.75rem;
  counter-reset: era;
}

.timeline > div {
  position: relative;
  min-width: 0;
  padding: 0.9rem 0.9rem 0.9rem 3.25rem;
  border-radius: 0.5rem;
  background: var(--surface-soft);
  box-shadow: 0 0 0 1px var(--line) inset;
}

.timeline > div::before {
  counter-increment: era;
  content: counter(era);
  position: absolute;
  top: 0.9rem;
  left: 0.9rem;
  display: grid;
  place-items: center;
  width: 1.75rem;
  height: 1.75rem;
  border-radius: 0.4rem;
  background: rgba(225, 164, 90, 0.16);
  color: var(--amber);
  font-weight: 900;
  font-variant-numeric: tabular-nums;
}

.timeline span {
  display: block;
  margin-bottom: 0.3rem;
  color: var(--cyan);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

table {
  width: 100%;
  border-collapse: collapse;
  overflow: hidden;
  border-radius: 0.5rem;
}

th,
td {
  padding: 0.75rem;
  border-bottom: 1px solid var(--line);
  text-align: left;
}

th {
  color: var(--cyan);
}

.date {
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

@media (max-width: 760px) {
  .doc-shell {
    grid-template-columns: 1fr;
    max-width: 100vw;
    overflow: hidden;
  }

  .doc-nav {
    position: static;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    height: auto;
    width: min(23rem, calc(100vw - 1.3rem));
    margin: 0 0 0 0.65rem;
  }

  .doc-nav strong {
    grid-column: 1 / -1;
  }

  .grid {
    grid-template-columns: 1fr;
  }

  .doc-page {
    width: min(23rem, calc(100vw - 1.3rem));
    max-width: min(23rem, calc(100vw - 1.3rem));
    margin: 0 0 0 0.65rem;
    padding-right: 0;
    padding-left: 0;
    overflow: hidden;
  }

  .hero-doc,
  section {
    width: 100%;
    max-width: 100%;
  }

  h1 {
    font-size: clamp(2rem, 12vw, 3rem);
  }

  .timeline > div {
    padding-left: 0.9rem;
    padding-top: 3rem;
  }
}