:root {
  --navy-0: #070c16;
  --navy-1: #0b1526;
  --navy-2: #101f38;
  --navy-3: #16294a;
  --line-gold: rgba(201, 162, 39, 0.35);
  --line-gold-soft: rgba(201, 162, 39, 0.16);
  --gold: #c9a227;
  --gold-soft: #e8c766;
  --text-hi: #efe7d6;
  --text-mid: #c3ccdb;
  --text-lo: #8393ab;
  --serif-display: 'Playfair Display', 'Iowan Old Style', Georgia, serif;
  --serif-body: 'Spectral', 'Iowan Old Style', Georgia, serif;
  --mono: 'IBM Plex Mono', 'SFMono-Regular', Consolas, monospace;
  --max-w: 1120px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background:
    radial-gradient(ellipse at 15% -10%, rgba(201,162,39,0.08), transparent 45%),
    radial-gradient(ellipse at 90% 0%, rgba(90,130,200,0.08), transparent 40%),
    var(--navy-0);
  color: var(--text-mid);
  font-family: var(--serif-body);
  font-size: 17px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

/* Faint topographic contour-line texture, drawn once as an inline SVG background */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: 0.35;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='600' height='600'%3E%3Cg fill='none' stroke='%23c9a227' stroke-opacity='0.05'%3E%3Ccircle cx='80' cy='60' r='40'/%3E%3Ccircle cx='80' cy='60' r='90'/%3E%3Ccircle cx='80' cy='60' r='140'/%3E%3Ccircle cx='520' cy='480' r='55'/%3E%3Ccircle cx='520' cy='480' r='110'/%3E%3Ccircle cx='520' cy='480' r='170'/%3E%3Cpath d='M0 300 Q150 260 300 300 T600 300'/%3E%3Cpath d='M0 340 Q150 300 300 340 T600 340'/%3E%3C/g%3E%3C/svg%3E");
  background-repeat: repeat;
}

a { color: var(--gold-soft); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap {
  position: relative;
  z-index: 1;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 28px;
}

/* ---------- Header ---------- */
header.masthead {
  border-bottom: 1px solid var(--line-gold-soft);
  padding: 22px 0;
  position: relative;
  z-index: 2;
}
header.masthead .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.brand {
  display: flex;
  align-items: baseline;
  gap: 12px;
}
.brand .mark {
  font-family: var(--mono);
  color: var(--gold);
  font-size: 13px;
  letter-spacing: 0.12em;
  border: 1px solid var(--line-gold);
  border-radius: 999px;
  padding: 3px 10px;
}
.brand .name {
  font-family: var(--serif-display);
  font-size: 22px;
  color: var(--text-hi);
  letter-spacing: 0.01em;
}
nav.crumbs {
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--text-lo);
  text-transform: uppercase;
}
nav.crumbs a { color: var(--text-lo); }
nav.crumbs a:hover { color: var(--gold-soft); }

/* ---------- Hero ---------- */
.hero {
  padding: 64px 0 40px;
  border-bottom: 1px solid var(--line-gold-soft);
  position: relative;
  z-index: 1;
}
.hero .kicker {
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 18px;
}
.hero h1 {
  font-family: var(--serif-display);
  font-size: clamp(34px, 5.2vw, 56px);
  line-height: 1.1;
  color: var(--text-hi);
  margin: 0 0 20px;
  font-weight: 600;
  max-width: 16ch;
}
.hero .tagline {
  font-size: 19px;
  color: var(--text-mid);
  max-width: 62ch;
  margin: 0 0 28px;
}
.hero .provenance {
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--text-lo);
  border-left: 2px solid var(--line-gold);
  padding-left: 14px;
  max-width: 60ch;
}

/* ---------- Legend / index section on homepage ---------- */
.section-label {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
  margin: 56px 0 22px;
  display: flex;
  align-items: center;
  gap: 14px;
}
.section-label::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--line-gold-soft);
}

.territory-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 18px;
  margin-bottom: 56px;
}
.territory-card {
  background: linear-gradient(165deg, var(--navy-2), var(--navy-1));
  border: 1px solid var(--line-gold-soft);
  border-radius: 4px;
  padding: 24px 24px 22px;
  position: relative;
  transition: border-color 0.2s ease, transform 0.2s ease;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.territory-card:hover {
  border-color: var(--line-gold);
  transform: translateY(-2px);
}
.territory-card .code-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--gold);
  letter-spacing: 0.08em;
}
.territory-card .region {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-lo);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.territory-card h3 {
  font-family: var(--serif-display);
  font-size: 21px;
  color: var(--text-hi);
  margin: 4px 0 2px;
  font-weight: 600;
  line-height: 1.3;
}
.territory-card p.legend-text {
  font-size: 15px;
  color: var(--text-mid);
  margin: 0;
  flex-grow: 1;
}
.territory-card .coords {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-lo);
  margin-top: 6px;
}
.territory-card .go {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--gold-soft);
  margin-top: 8px;
}

/* ---------- Territory detail page ---------- */
.territory-head {
  padding: 48px 0 32px;
  border-bottom: 1px solid var(--line-gold-soft);
}
.territory-head .region-line {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-lo);
  margin-bottom: 10px;
}
.territory-head .region-line .code {
  color: var(--gold);
  border: 1px solid var(--line-gold);
  border-radius: 999px;
  padding: 2px 9px;
  margin-right: 10px;
}
.territory-head h1 {
  font-family: var(--serif-display);
  font-size: clamp(30px, 4.4vw, 44px);
  color: var(--text-hi);
  margin: 0 0 14px;
  line-height: 1.15;
}
.territory-head .coords {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--gold-soft);
  margin-bottom: 16px;
}
.territory-head .legend-text {
  font-size: 18px;
  color: var(--text-mid);
  max-width: 66ch;
}
.landmarks {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}
.landmarks span {
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--text-lo);
  border: 1px solid var(--line-gold-soft);
  border-radius: 999px;
  padding: 4px 11px;
}

.strata {
  padding: 44px 0;
  border-bottom: 1px solid var(--line-gold-soft);
}
.strata .strata-label {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 20px;
}
.strata .strata-badge {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--navy-0);
  background: var(--gold);
  border-radius: 3px;
  padding: 4px 10px;
  white-space: nowrap;
}
.strata h2 {
  font-family: var(--serif-display);
  font-size: 24px;
  color: var(--text-hi);
  margin: 0;
  font-weight: 600;
}
.strata .content {
  max-width: 72ch;
  font-size: 17px;
}
.strata .content p { margin: 0 0 16px; }
.strata .content p:last-child { margin-bottom: 0; }
.strata .content code {
  font-family: var(--mono);
  font-size: 0.88em;
  color: var(--gold-soft);
  background: rgba(201,162,39,0.08);
  padding: 1px 5px;
  border-radius: 3px;
}

.charts-box {
  padding: 40px 0 60px;
}
.charts-box h4 {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold);
  margin: 0 0 16px;
}
.charts-box ul { list-style: none; margin: 0; padding: 0; }
.charts-box li {
  padding: 12px 0;
  border-top: 1px solid var(--line-gold-soft);
  display: flex;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}
.charts-box li .label { color: var(--text-hi); font-size: 15px; }
.charts-box li .note { color: var(--text-lo); font-size: 13px; font-family: var(--mono); }

.back-link {
  display: inline-block;
  margin: 36px 0 0;
  font-family: var(--mono);
  font-size: 13px;
  color: var(--text-lo);
}
.back-link:hover { color: var(--gold-soft); }

/* ---------- Footer ---------- */
footer {
  border-top: 1px solid var(--line-gold-soft);
  padding: 40px 0 56px;
  margin-top: 40px;
}
footer .wrap {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--text-lo);
}
footer a { color: var(--text-lo); }
footer a:hover { color: var(--gold-soft); }

/* ---------- Cartographer profile ---------- */
.cartographer {
  display: flex;
  gap: 32px;
  align-items: flex-start;
  padding: 40px 0 8px;
  flex-wrap: wrap;
}
.cartographer .portrait {
  flex: 0 0 auto;
  width: 148px;
  height: 148px;
  border-radius: 6px;
  overflow: hidden;
  border: 1px solid var(--line-gold);
  box-shadow: 0 8px 30px rgba(0,0,0,0.45);
}
.cartographer .portrait img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  filter: saturate(0.92) contrast(1.02);
}
.cartographer .bio {
  flex: 1 1 380px;
  min-width: 0;
}
.cartographer .bio .role-line {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 8px;
}
.cartographer .bio h3 {
  font-family: var(--serif-display);
  font-size: 24px;
  color: var(--text-hi);
  margin: 0 0 12px;
  font-weight: 600;
}
.cartographer .bio p {
  font-size: 15.5px;
  margin: 0 0 14px;
  max-width: 62ch;
}
.cartographer .bio .links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 4px;
}
.cartographer .bio .links a {
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--gold-soft);
  border: 1px solid var(--line-gold);
  border-radius: 999px;
  padding: 6px 14px;
  text-decoration: none;
}
.cartographer .bio .links a:hover {
  background: rgba(201,162,39,0.1);
  text-decoration: none;
}

/* ---------- Sibling-publication banner ---------- */
.sibling-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  border: 1px solid var(--line-gold-soft);
  border-radius: 4px;
  padding: 16px 22px;
  margin: 8px 0 0;
  background: linear-gradient(165deg, var(--navy-2), var(--navy-1));
}
.sibling-banner .text {
  font-size: 14.5px;
  color: var(--text-mid);
}
.sibling-banner .text strong { color: var(--text-hi); }
.sibling-banner a.visit {
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--navy-0);
  background: var(--gold);
  border-radius: 999px;
  padding: 7px 16px;
  white-space: nowrap;
  text-decoration: none;
}
.sibling-banner a.visit:hover { background: var(--gold-soft); text-decoration: none; }

/* ---------- Header nav link to sibling site ---------- */
.header-notebook-link {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--text-lo);
  border: 1px solid var(--line-gold-soft);
  border-radius: 999px;
  padding: 4px 12px;
  text-transform: none;
  margin-right: 14px;
}
.header-notebook-link:hover { color: var(--gold-soft); text-decoration: none; }

@media (max-width: 640px) {
  .hero { padding: 44px 0 32px; }
  .strata { padding: 32px 0; }
  .cartographer { flex-direction: column; align-items: center; text-align: center; }
  .cartographer .bio .links { justify-content: center; }
}