:root {
  color-scheme: dark;
  --ink: #080a09;
  --bone: #e8e5d9;
  --verdigris: #72a69a;
  --oxide: #9e5f4a;
  --violet: #6d687f;
  --page-pad: clamp(1.2rem, 3.5vw, 4rem);
}

* {
  box-sizing: border-box;
}

html {
  background: var(--ink);
}

body {
  margin: 0;
  min-width: 20rem;
  overflow: hidden;
  background: var(--ink);
  color: var(--bone);
  font-family: "Helvetica Neue", "Nimbus Sans L", Arial, sans-serif;
  font-synthesis: none;
  text-rendering: geometricPrecision;
}

body::before {
  position: fixed;
  z-index: 10;
  inset: 0;
  background: linear-gradient(90deg, rgba(255, 255, 255, .014), transparent 35%, rgba(255, 255, 255, .01));
  content: "";
  mix-blend-mode: soft-light;
  pointer-events: none;
}

::selection {
  background: var(--verdigris);
  color: var(--ink);
}

.grain {
  position: fixed;
  z-index: 8;
  inset: -20%;
  width: 140%;
  height: 140%;
  opacity: .18;
  mix-blend-mode: soft-light;
  pointer-events: none;
}

.zero-field {
  position: relative;
  display: grid;
  place-items: center;
  width: 100%;
  min-height: 100svh;
  overflow: hidden;
  padding: clamp(5rem, 8vw, 8rem) var(--page-pad) 4rem;
  background:
    radial-gradient(circle at 73% 12%, rgba(74, 110, 99, .13), transparent 28rem),
    radial-gradient(circle at 16% 72%, rgba(112, 72, 80, .1), transparent 35rem),
    var(--ink);
  isolation: isolate;
  text-align: center;
}

.zero-field::before {
  position: absolute;
  width: min(76vw, 62rem);
  aspect-ratio: 1;
  border: 1px solid rgba(232, 229, 217, .08);
  border-radius: 50%;
  box-shadow:
    0 0 0 4rem rgba(232, 229, 217, .012),
    0 0 0 9rem rgba(232, 229, 217, .009),
    inset 0 0 11rem rgba(87, 123, 113, .06);
  content: "";
  animation: field-breathe 14s ease-in-out infinite alternate;
}

.mineral-wash {
  position: absolute;
  z-index: -1;
  inset: 5% -15% -12%;
  background:
    radial-gradient(ellipse at 34% 48%, rgba(83, 125, 113, .2), transparent 27%),
    radial-gradient(ellipse at 69% 56%, rgba(130, 78, 59, .16), transparent 25%),
    radial-gradient(ellipse at 53% 42%, rgba(92, 76, 111, .19), transparent 40%);
  filter: blur(78px);
  animation: wash-drift 18s ease-in-out infinite alternate;
}

.zero-field-inner {
  position: relative;
  z-index: 2;
  width: 100%;
}

.zero-echo {
  margin: 0;
  color: transparent;
  font-size: clamp(8rem, 29vw, 28rem);
  font-weight: 500;
  letter-spacing: -.145em;
  line-height: .76;
  -webkit-text-stroke: 1px rgba(232, 229, 217, .28);
}

.return-note {
  margin: clamp(3rem, 6vw, 5rem) 0 0;
  color: rgba(232, 229, 217, .58);
  font-size: .65rem;
  letter-spacing: .19em;
  line-height: 1.4;
  text-transform: uppercase;
}

.site-footer {
  position: absolute;
  right: var(--page-pad);
  bottom: 2rem;
  left: var(--page-pad);
  color: rgba(232, 229, 217, .34);
  font-size: .58rem;
  letter-spacing: .17em;
  text-align: left;
  text-transform: uppercase;
}

@keyframes field-breathe {
  from { transform: scale(.985); }
  to { transform: scale(1.025); }
}

@keyframes wash-drift {
  from { transform: translate3d(-1.5%, -1%, 0) rotate(-1deg) scale(1.02); }
  to { transform: translate3d(2%, 1.5%, 0) rotate(1deg) scale(1.06); }
}

@media (max-width: 760px) {
  .zero-field {
    min-height: 100svh;
    padding-bottom: 4.5rem;
  }

  .zero-field::before {
    width: 90vw;
    box-shadow:
      0 0 0 2.6rem rgba(232, 229, 217, .012),
      0 0 0 5.8rem rgba(232, 229, 217, .009),
      inset 0 0 7rem rgba(87, 123, 113, .06);
  }

  .zero-echo {
    font-size: clamp(7rem, 37vw, 13rem);
  }

  .return-note {
    margin-top: 3.25rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .zero-field::before,
  .mineral-wash {
    animation: none;
  }
}

@media (forced-colors: active) {
  .grain,
  .mineral-wash,
  .zero-field::before {
    display: none;
  }

  .zero-field {
    background: Canvas;
    color: CanvasText;
  }

  .zero-echo {
    color: CanvasText;
    -webkit-text-stroke: 0;
  }

  .return-note,
  .site-footer {
    color: CanvasText;
  }
}