:root {
  color-scheme: dark;
  --ink: #e3ebe6;
  --muted: #809087;
  --signal: #97ffc5;
}

* { box-sizing: border-box; }

html,
body {
  width: 100%;
  height: 100%;
  margin: 0;
  overflow: hidden;
  background: #030505;
}

body {
  font-family: "Helvetica Neue", "Inter", Arial, sans-serif;
  color: var(--ink);
}

.scene {
  position: relative;
  width: 100%;
  height: 100%;
  min-height: 32rem;
  isolation: isolate;
  background: #020302;
}

#forest {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.vignette {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse 38% 32% at 52% 96%, rgba(72, 101, 81, .12) 0%, rgba(42, 65, 51, .05) 45%, transparent 78%),
    radial-gradient(ellipse 36% 25% at 52% 53%, rgba(122, 139, 130, .17) 0%, rgba(73, 92, 82, .09) 38%, transparent 74%),
    linear-gradient(90deg, #000 0%, rgba(1, 3, 2, .995) 17%, rgba(8, 14, 11, .94) 29%, rgba(20, 31, 26, .55) 40%, transparent 48%, transparent 52%, rgba(20, 31, 26, .48) 61%, rgba(8, 14, 11, .62) 72%, rgba(1, 3, 2, .96) 86%, #000 100%),
    linear-gradient(180deg, rgba(0, 0, 0, .1), transparent 25%, transparent 56%, rgba(0, 0, 0, .25)),
    radial-gradient(ellipse 58% 82% at 50% 47%, transparent 0 34%, rgba(2, 5, 4, .16) 59%, rgba(0, 1, 1, .35) 86%, #000 100%);
  z-index: 2;
}

.grain {
  position: absolute;
  inset: 0;
  z-index: 3;
  pointer-events: none;
  opacity: .032;
  background-image:
    repeating-radial-gradient(circle at 17% 23%, rgba(255, 255, 255, .7) 0 .5px, transparent .7px 4px),
    repeating-radial-gradient(circle at 71% 67%, rgba(255, 255, 255, .45) 0 .4px, transparent .6px 5px);
  background-size: 7px 9px, 11px 13px;
  animation: none;
}

.mark {
  position: absolute;
  z-index: 5;
  top: clamp(2rem, 8vh, 6rem);
  left: clamp(1.5rem, 6vw, 6.5rem);
  width: min(31rem, calc(100vw - 3rem));
  text-shadow: 0 2px 30px rgba(0, 0, 0, .85);
}

.mark__eyebrow {
  display: block;
  margin-bottom: 1.1rem;
  color: var(--signal);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: .64rem;
  font-weight: 600;
  letter-spacing: .36em;
}

h1 {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin: 0;
  font-size: clamp(3.6rem, 10vw, 8.8rem);
  font-weight: 800;
  letter-spacing: -.07em;
  line-height: .72;
}

h1 span:nth-child(2) {
  color: transparent;
  -webkit-text-stroke: 1px rgba(227, 235, 230, .6);
  text-stroke: 1px rgba(227, 235, 230, .6);
  transform: translateX(.15em);
}

h1 span:nth-child(3) { transform: translateX(.34em); }

.mark p {
  margin: 1.8rem 0 0 .35rem;
  color: rgba(227, 235, 230, .68);
  font-size: clamp(.72rem, 1.3vw, .9rem);
  letter-spacing: .14em;
  text-transform: uppercase;
}

.status,
.coordinates {
  position: absolute;
  z-index: 5;
  bottom: clamp(1.4rem, 4vh, 3.5rem);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: .58rem;
  letter-spacing: .2em;
  color: rgba(227, 235, 230, .58);
}

.status {
  left: clamp(1.5rem, 6vw, 6.5rem);
  display: flex;
  align-items: center;
  gap: .7rem;
}

.status__pulse {
  width: .4rem;
  height: .4rem;
  border-radius: 50%;
  background: var(--signal);
  box-shadow: 0 0 0 0 rgba(151, 255, 197, .55);
  animation: pulse 2.2s ease-out infinite;
}

.coordinates {
  right: clamp(1.5rem, 4vw, 4rem);
  display: flex;
  gap: 2.2rem;
}

.no-script {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-size: 8vw;
  letter-spacing: -.05em;
}

@keyframes pulse {
  70% { box-shadow: 0 0 0 .65rem rgba(151, 255, 197, 0); }
  100% { box-shadow: 0 0 0 0 rgba(151, 255, 197, 0); }
}

@keyframes grain {
  0% { transform: translate(4%, -3%); }
  25% { transform: translate(-2%, 5%); }
  50% { transform: translate(6%, 2%); }
  75% { transform: translate(-5%, -4%); }
  100% { transform: translate(3%, 6%); }
}

@media (max-width: 640px) {
  .mark { top: 2.4rem; }
  .coordinates span:last-child { display: none; }
  .mark p { max-width: 15rem; line-height: 1.6; }
}

@media (prefers-reduced-motion: reduce) {
  .grain,
  .status__pulse { animation: none; }
}