:root {
  --paper: #f2ead8;
  --ink: #2b2620;
  --ochre: #c19a5b;
  --iron-red: #8c3b2e;
  --ink-soft: #5c5447;
  --line: rgba(43, 38, 32, 0.28);
  --shadow: 0 12px 28px rgba(25, 20, 14, 0.12);
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background-color: var(--paper);
  font-family: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Palatino, Georgia, serif;
  line-height: 1.65;
  min-height: 100vh;
  position: relative;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.2;
  background-image:
    radial-gradient(circle at 20% 20%, rgba(255,255,255,0.35) 0 2px, transparent 2px 100%),
    radial-gradient(circle at 75% 55%, rgba(0,0,0,0.08) 0 1px, transparent 1px 100%);
  background-size: 12px 12px, 9px 9px;
  z-index: -1;
}

a {
  color: var(--ink);
}

a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 2px solid var(--iron-red);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  left: 0.75rem;
  top: -120px;
  background: var(--ink);
  color: var(--paper);
  padding: 0.5rem 0.8rem;
  text-decoration: none;
  z-index: 1000;
}

.skip-link:focus {
  top: 0.75rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: color-mix(in srgb, var(--paper) 92%, white 8%);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(4px);
  padding: 0.65rem 1rem 0.8rem;
}

.site-title-wrap {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
}

.site-kicker {
  margin: 0;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-size: 0.7rem;
  color: var(--ink-soft);
}

.site-title {
  margin: 0;
  font-family: "Cormorant Garamond", Georgia, serif;
  font-size: clamp(1.6rem, 6vw, 2.2rem);
  line-height: 1;
}

.site-nav {
  display: flex;
  overflow-x: auto;
  gap: 0.35rem;
  margin-top: 0.7rem;
  padding-bottom: 0.15rem;
}

.site-nav a {
  border: 1px solid var(--line);
  text-decoration: none;
  white-space: nowrap;
  font-size: 0.84rem;
  padding: 0.38rem 0.62rem;
  border-radius: 999px;
}

.site-nav a.is-active {
  border-color: var(--ink);
  background: rgba(43, 38, 32, 0.07);
}

.panel {
  width: min(1050px, calc(100% - 2rem));
  margin: 1.3rem auto;
}

.neatline {
  border: 1px solid var(--line);
  padding: 1rem;
  box-shadow: var(--shadow);
  background: color-mix(in srgb, var(--paper) 95%, white 5%);
}

h2, h3 {
  font-family: "Cormorant Garamond", Georgia, serif;
  margin: 0 0 0.65rem;
}

h2 {
  font-size: clamp(1.65rem, 5vw, 2.4rem);
}

h3 {
  font-size: clamp(1.3rem, 3.8vw, 1.75rem);
}

p {
  margin: 0 0 0.95rem;
}

.hero {
  min-height: calc(100vh - 88px);
  display: grid;
  align-items: end;
  position: relative;
  overflow: clip;
}

.hero-terrain {
  position: absolute;
  inset: 0;
  color: var(--ink-soft);
  opacity: 0.45;
}

.hero-terrain svg {
  width: 100%;
  height: 100%;
}

.hero-content {
  position: relative;
  z-index: 2;
  border: 1px solid var(--line);
  background: color-mix(in srgb, var(--paper) 90%, white 10%);
  padding: 1rem;
  box-shadow: var(--shadow);
  max-width: 700px;
  margin: 0 0 1.2rem;
}

.subtitle {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.13em;
  font-size: 0.78rem;
  color: var(--ink-soft);
}

#hero-title {
  margin: 0.25rem 0;
  font-size: clamp(2.3rem, 10vw, 4.5rem);
}

.tagline {
  margin: 0 0 1rem;
  font-size: clamp(1rem, 2.8vw, 1.3rem);
}

.cta-btn {
  display: inline-block;
  border: 1px solid var(--ink);
  text-decoration: none;
  padding: 0.58rem 1rem;
  background: var(--ochre);
  font-weight: 600;
}

blockquote {
  margin: 1rem 0 0;
  padding: 0.85rem 0.95rem;
  border-left: 3px solid var(--iron-red);
  background: rgba(140, 59, 46, 0.06);
  font-style: italic;
}

.atlas-lede {
  margin-bottom: 0.75rem;
}

.slider-wrap {
  border: 1px solid var(--line);
  padding: 0.8rem;
  margin-bottom: 1rem;
}

.slider-label {
  display: flex;
  gap: 0.45rem;
  align-items: center;
  font-weight: 600;
}

#year-output {
  min-width: 3ch;
}

#year-slider {
  width: 100%;
  accent-color: var(--iron-red);
}

.small-note {
  margin: 0.5rem 0 0;
  font-size: 0.88rem;
  color: var(--ink-soft);
}

.map-card {
  border: 1px solid var(--line);
  padding: 0.4rem;
  background: color-mix(in srgb, var(--paper) 92%, white 8%);
}

#atlas-map {
  width: 100%;
  height: auto;
  display: block;
}

.route {
  fill: none;
  stroke: var(--ochre);
  stroke-width: 2.2;
  opacity: 0.8;
}

.ridge {
  fill: none;
  stroke: rgba(43, 38, 32, 0.28);
  stroke-width: 1.3;
  stroke-dasharray: 4 6;
}

.p-dot {
  transition: fill 180ms ease, stroke 180ms ease, opacity 180ms ease;
  stroke: var(--ink);
  stroke-width: 1;
}

.p-label {
  font-size: 16px;
  fill: var(--ink);
  font-family: "Cormorant Garamond", Georgia, serif;
}

.legend {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, minmax(140px, 1fr));
  gap: 0.5rem;
  margin: 0.95rem 0 0;
  padding: 0;
}

.legend li {
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.dot {
  width: 0.8rem;
  height: 0.8rem;
  border-radius: 50%;
  border: 1px solid var(--ink);
  display: inline-block;
}

.operational { background: #7f8f68; }
.hollow { background: var(--ochre); }
.abandoned { background: var(--iron-red); }
.unresolved { background: #7c6f79; }

.card-grid {
  display: grid;
  gap: 0.85rem;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
}

.p-card {
  border: 1px solid var(--line);
  padding: 0.75rem;
  background: rgba(255, 255, 255, 0.25);
}

.p-card h3 {
  margin-bottom: 0.2rem;
}

.p-meta {
  margin: 0 0 0.45rem;
  font-size: 0.9rem;
  color: var(--ink-soft);
}

.p-status {
  margin: 0 0 0.45rem;
  font-size: 0.9rem;
}

.watch-frame {
  margin: 0;
  aspect-ratio: 16 / 9;
  border: 10px solid color-mix(in srgb, var(--ink) 16%, transparent 84%);
  background: linear-gradient(135deg, rgba(43, 38, 32, 0.16), rgba(140, 59, 46, 0.2));
  display: grid;
  place-items: center;
  position: relative;
}

.play-overlay {
  font-size: clamp(2rem, 9vw, 4rem);
  background: rgba(242, 234, 216, 0.8);
  border-radius: 50%;
  width: 4.2rem;
  height: 4.2rem;
  display: grid;
  place-items: center;
}

.watch-frame figcaption {
  position: absolute;
  left: 0.85rem;
  right: 0.85rem;
  bottom: 0.6rem;
  background: rgba(242, 234, 216, 0.9);
  padding: 0.35rem 0.5rem;
}

.split-grid {
  display: grid;
  gap: 0.9rem;
}

.split-card {
  border: 1px solid var(--line);
  padding: 0.8rem;
  background: rgba(255, 255, 255, 0.25);
}

.interest-form {
  display: grid;
  gap: 0.5rem;
}

.interest-form input,
.interest-form button {
  font: inherit;
  padding: 0.55rem 0.6rem;
  border: 1px solid var(--line);
  background: color-mix(in srgb, var(--paper) 93%, white 7%);
}

.interest-form button {
  background: var(--ochre);
  cursor: pointer;
  font-weight: 600;
}

.print-mock {
  border: 1px solid var(--ink);
  min-height: 170px;
  display: grid;
  place-content: center;
  text-align: center;
  background: repeating-linear-gradient(
    -25deg,
    rgba(43, 38, 32, 0.04),
    rgba(43, 38, 32, 0.04) 4px,
    transparent 4px,
    transparent 10px
  );
}

.print-title {
  margin: 0;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.print-note {
  margin: 0;
  font-size: 0.92rem;
  color: var(--ink-soft);
}

.site-footer {
  width: min(1050px, calc(100% - 2rem));
  margin: 1rem auto 2.2rem;
  border-top: 1px solid var(--line);
  padding-top: 0.8rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.7rem;
}

.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 360ms ease, transform 360ms ease;
}

.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

@media (min-width: 760px) {
  .site-header {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.6rem 1.2rem 0.75rem;
  }

  .site-title-wrap {
    min-width: 260px;
  }

  .site-nav {
    margin-top: 0;
    justify-content: flex-end;
  }

  .neatline {
    padding: 1.35rem;
  }

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

  .legend {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .reveal,
  .p-dot {
    transition: none;
  }
}