:root {
  color-scheme: dark;
  --ink: #071722;
  --ocean: #031a29;
  --ivory: #f4eddc;
  --coral: #ff5a3d;
  --teal: #66b8b0;
  --slate: #334852;
  --line: rgba(244, 237, 220, 0.2);
  --display: "Arial Narrow", "Roboto Condensed", "Helvetica Neue Condensed", sans-serif;
  --body: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--ink);
  color: var(--ivory);
  font-family: var(--body);
  min-width: 0;
}

body {
  margin: 0;
  min-width: 0;
  min-height: 100vh;
  overflow-x: hidden;
  background:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px),
    var(--ink);
  background-size: clamp(3rem, 8vw, 7rem) clamp(3rem, 8vw, 7rem);
}

.skip-link {
  position: absolute;
  z-index: 20;
  left: 1rem;
  top: 1rem;
  padding: 0.75rem 1rem;
  color: var(--ink);
  background: var(--ivory);
  transform: translateY(-200%);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header,
footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: min(100% - 2rem, 90rem);
  margin-inline: auto;
  font-family: var(--display);
  font-stretch: condensed;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.site-header {
  min-height: 5rem;
  border-bottom: 1px solid var(--line);
}

.brand,
.coordinate,
footer p {
  margin: 0;
}

.brand {
  font-size: clamp(1.25rem, 2vw, 1.75rem);
  letter-spacing: 0.18em;
}

.coordinate,
footer {
  color: var(--teal);
  font-size: 0.7rem;
}

main {
  width: min(100% - 2rem, 90rem);
  margin-inline: auto;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.88fr) minmax(20rem, 1.12fr);
  align-items: center;
  gap: clamp(2rem, 7vw, 8rem);
  min-height: calc(100vh - 9rem);
  padding-block: clamp(3rem, 8vh, 7rem);
}

.hero-copy {
  position: relative;
  z-index: 2;
}

.eyebrow {
  margin: 0 0 1.2rem;
  color: var(--coral);
  font-family: var(--display);
  font-size: clamp(0.9rem, 1.4vw, 1.15rem);
  font-stretch: condensed;
  font-weight: 900;
  letter-spacing: 0.18em;
}

h1 {
  max-width: 11ch;
  margin: 0;
  font-family: var(--display);
  font-size: clamp(3.7rem, 8.5vw, 9rem);
  font-stretch: condensed;
  font-weight: 900;
  letter-spacing: -0.055em;
  line-height: 0.78;
  text-transform: uppercase;
}

.descriptor {
  max-width: 27rem;
  margin: clamp(2rem, 4vw, 3.5rem) 0 0;
  padding-left: 1rem;
  border-left: 0.25rem solid var(--coral);
  color: var(--ivory);
  font-size: clamp(1rem, 1.7vw, 1.3rem);
  line-height: 1.5;
}

.map-frame {
  position: relative;
  isolation: isolate;
  width: 100%;
  min-height: clamp(24rem, 62vw, 43rem);
  overflow: hidden;
  border: 1px solid var(--teal);
  background: var(--ocean);
}

.map-frame::before,
.map-frame::after {
  content: "";
  position: absolute;
  z-index: 5;
  pointer-events: none;
  border-color: var(--coral);
}

.map-frame::before {
  inset: 0.75rem;
  border: 1px solid var(--line);
}

.map-frame::after {
  width: 2.3rem;
  height: 2.3rem;
  right: 0.75rem;
  bottom: 0.75rem;
  border-right: 0.2rem solid;
  border-bottom: 0.2rem solid;
}

.map-grid {
  position: absolute;
  z-index: 4;
  inset: 0;
  opacity: 0.72;
  pointer-events: none;
  background:
    linear-gradient(rgba(102, 184, 176, 0.2) 1px, transparent 1px),
    linear-gradient(90deg, rgba(102, 184, 176, 0.2) 1px, transparent 1px);
  background-size: 20% 20%;
}

.topographic-centerpiece {
  position: absolute;
  z-index: 2;
  width: clamp(18rem, 77%, 31rem);
  height: auto;
  aspect-ratio: 1;
  top: 50%;
  left: 53%;
  display: block;
  object-fit: contain;
  border-radius: 0.6%;
  -webkit-mask-image: radial-gradient(circle at center, #000 0 72%, rgba(0, 0, 0, 0.9) 80%, transparent 100%);
  mask-image: radial-gradient(circle at center, #000 0 72%, rgba(0, 0, 0, 0.9) 80%, transparent 100%);
  pointer-events: none;
  transform: translate(-50%, -50%);
}

.degree,
.map-label {
  position: absolute;
  z-index: 6;
  color: var(--teal);
  background: var(--ink);
  font-family: var(--display);
  font-size: 0.65rem;
  font-weight: 800;
  letter-spacing: 0.16em;
}

.degree-north {
  top: 0;
  left: 24%;
  padding-inline: 0.4rem;
  transform: translateY(-1px);
}

.degree-east {
  right: 0;
  top: 42%;
  padding-inline: 0.4rem;
  transform: translate(42%, -50%) rotate(90deg);
}

.map-label {
  left: 1.5rem;
  bottom: 1.35rem;
  color: var(--ivory);
}

.tick {
  position: absolute;
  z-index: 6;
  opacity: 0.8;
}

.tick-top {
  top: 0;
  left: 68%;
  width: 3rem;
  height: 0.65rem;
  border-inline: 1px solid var(--teal);
}

.tick-right {
  right: 0;
  top: 68%;
  width: 0.65rem;
  height: 3rem;
  border-block: 1px solid var(--teal);
}

.survey-signal {
  position: absolute;
  z-index: 7;
  top: 68%;
  left: 24%;
  width: clamp(3.5rem, 16%, 6.5rem);
  aspect-ratio: 1;
  border: 1px solid var(--ivory);
  border-radius: 50%;
  transform: translate(-50%, -50%);
}

.signal-horizontal,
.signal-vertical,
.signal-origin {
  position: absolute;
  top: 50%;
  left: 50%;
  background: var(--ivory);
  transform: translate(-50%, -50%);
}

.signal-horizontal {
  width: 132%;
  height: 1px;
}

.signal-vertical {
  width: 1px;
  height: 132%;
}

.signal-origin {
  width: 0.45rem;
  height: 0.45rem;
  border: 0.12rem solid var(--coral);
  border-radius: 50%;
}

footer {
  min-height: 4rem;
  border-top: 1px solid var(--line);
}

.error-page {
  display: grid;
  place-items: center;
  padding: 1rem;
}

.error-page main {
  width: min(100%, 44rem);
}

.error-card {
  padding: clamp(2rem, 8vw, 5rem);
  border: 1px solid var(--teal);
  background: var(--ink);
}

.error-card h1 {
  margin-block: 2rem;
  font-size: clamp(3rem, 10vw, 6rem);
}

.error-card p:not(.brand):not(.eyebrow) {
  line-height: 1.6;
}

.home-link {
  display: inline-block;
  margin-top: 1rem;
  padding: 0.9rem 1.2rem;
  color: var(--ink);
  background: var(--coral);
  font-weight: 800;
}

a:focus-visible {
  outline: 0.2rem solid var(--ivory);
  outline-offset: 0.25rem;
}

@media (max-width: 52rem) {
  .hero {
    grid-template-columns: 1fr;
  }

  .map-frame {
    min-height: clamp(22rem, 110vw, 38rem);
  }

  .topographic-centerpiece {
    width: 82%;
  }

  .coordinate {
    display: none;
  }
}

@media (max-width: 23rem) {
  .site-header,
  main,
  footer {
    width: min(100% - 1.25rem, 90rem);
  }

  h1 {
    font-size: clamp(3rem, 18vw, 4rem);
  }

  footer {
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto;
    transition-duration: 0.01ms;
    animation-duration: 0.01ms;
    animation-iteration-count: 1;
  }
}

@media (forced-colors: active) {
  body {
    background: Canvas;
    color: CanvasText;
  }

  .map-frame,
  .error-card {
    border: 2px solid CanvasText;
    background: Canvas;
  }

  .topographic-centerpiece,
  .signal-horizontal,
  .signal-vertical,
  .signal-origin {
    forced-color-adjust: auto;
  }

  .topographic-centerpiece {
    visibility: hidden;
  }

  .home-link {
    border: 2px solid LinkText;
  }
}