:root {
  color-scheme: dark;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #0b0e0d;
  color: #edf1ec;
  font-synthesis: none;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 78% 16%, rgb(112 146 116 / 16%), transparent 30rem),
    linear-gradient(145deg, #0a0d0c 0%, #111614 100%);
}

main {
  width: min(74rem, calc(100% - 2rem));
  margin: 0 auto;
  padding: 2rem 0 4rem;
}

header,
.observation,
.boundary {
  border: 1px solid #26302b;
  background: rgb(15 20 18 / 88%);
  box-shadow: 0 1.5rem 5rem rgb(0 0 0 / 24%);
}

header {
  min-height: 22rem;
  padding: clamp(1.5rem, 5vw, 4rem);
  display: grid;
  align-content: space-between;
}

.mark,
.eyebrow,
.label {
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
}

.mark {
  display: flex;
  align-items: center;
  gap: .65rem;
}

.mark::before {
  width: .75rem;
  height: .75rem;
  border: 1px solid #9ab49d;
  border-radius: 50%;
  content: "";
  box-shadow: inset 0 0 0 .18rem #111614;
  background: #b9d3bb;
}

.eyebrow,
.label,
.posture {
  color: #9fb0a3;
}

h1 {
  max-width: 12ch;
  margin: 1rem 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(3.2rem, 9vw, 7.5rem);
  font-weight: 400;
  letter-spacing: -.055em;
  line-height: .88;
}

.lede {
  max-width: 44rem;
  margin: 0;
  color: #b8c1ba;
  font-size: clamp(1rem, 2vw, 1.25rem);
  line-height: 1.6;
}

.grid {
  display: grid;
  grid-template-columns: 1.35fr .65fr;
  gap: 1rem;
  margin-top: 1rem;
}

.observation,
.boundary {
  padding: clamp(1.25rem, 3vw, 2rem);
}

.state {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .75rem;
  margin-top: 1.5rem;
}

.datum {
  min-height: 6.5rem;
  padding: 1rem;
  border: 1px solid #29342e;
  background: #0b0f0d;
}

.datum strong,
.datum code {
  display: block;
  margin-top: .55rem;
  overflow-wrap: anywhere;
  font-size: .92rem;
  font-weight: 500;
}

.posture {
  display: inline-flex;
  margin-top: 1rem;
  padding: .35rem .55rem;
  border: 1px solid #3c4a40;
  font: 700 .7rem/1 ui-monospace, monospace;
}

ul {
  margin: 1.5rem 0 0;
  padding: 0;
  list-style: none;
}

li {
  padding: .75rem 0;
  border-top: 1px solid #29342e;
  color: #b8c1ba;
  line-height: 1.45;
}

.error {
  color: #f0b6a7;
}

footer {
  padding: 1.5rem .25rem 0;
  color: #76827a;
  font-size: .78rem;
}

@media (max-width: 760px) {
  main {
    width: min(100% - 1rem, 42rem);
    padding-top: .5rem;
  }

  header {
    min-height: 27rem;
  }

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