:root {
  color-scheme: light;
  --abyss: #f6f3ec;
  --basin: #fbf9f4;
  --shelf: #f1ede4;
  --ridge: #e8e3d8;
  --mist: #101619;
  --foam: #45555b;
  --drift: #55666c;
  --slate: #d3ccbe;
  --glow: #0f6f7c;
  --deep-glow: #bfdfe4;
  --page-gutter: clamp(1rem, 4vw, 4.5rem);
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --mono: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;
  --sans: "Avenir Next Condensed", "Helvetica Neue", Helvetica, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 0;
  background: var(--abyss);
  color: var(--mist);
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  min-width: 0;
  margin: 0;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 72% 14%, color-mix(in srgb, var(--deep-glow) 60%, transparent) 0 14rem, transparent 32rem),
    radial-gradient(circle at 18% 44%, color-mix(in srgb, var(--slate) 82%, transparent) 0 18rem, transparent 42rem),
    linear-gradient(180deg, var(--basin) 0%, var(--abyss) 44%, var(--basin) 100%);
  color: var(--mist);
  font-family: var(--sans);
  line-height: 1.5;
  text-rendering: geometricPrecision;
}

body::before,
body::after {
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  content: "";
}

body::before {
  background-image:
    linear-gradient(90deg, color-mix(in srgb, var(--foam) 7%, transparent) 1px, transparent 1px),
    linear-gradient(180deg, color-mix(in srgb, var(--foam) 5%, transparent) 1px, transparent 1px);
  background-size: 7.5rem 7.5rem;
  mask-image: linear-gradient(180deg, transparent 0%, var(--abyss) 22%, var(--abyss) 78%, transparent 100%);
  opacity: .28;
}

body::after {
  z-index: -1;
  background:
    radial-gradient(circle at 50% -12%, color-mix(in srgb, var(--glow) 42%, transparent) 0 8rem, transparent 38rem),
    linear-gradient(180deg, transparent 0%, color-mix(in srgb, var(--abyss) 35%, transparent) 40%, var(--abyss) 100%);
}

a {
  color: inherit;
  text-decoration-color: color-mix(in srgb, currentColor 45%, transparent);
  text-underline-offset: .25em;
}

a:hover,
a:focus-visible {
  color: var(--glow);
}

img {
  display: block;
  max-width: 100%;
}

::selection {
  background: var(--glow);
  color: var(--abyss);
}

.skip {
  position: fixed;
  left: 1rem;
  top: 1rem;
  z-index: 20;
  padding: .7rem 1rem;
  background: var(--mist);
  color: var(--abyss);
  transform: translateY(-160%);
  transition: transform .25s ease;
}

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

.topbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 10;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 1rem;
  min-width: 0;
  padding: 1rem var(--page-gutter);
  color: var(--foam);
  background: linear-gradient(180deg, color-mix(in srgb, var(--abyss) 92%, transparent), transparent);
  backdrop-filter: blur(18px);
}

.wordmark,
.nav,
.nav-return {
  font-family: var(--mono);
  font-size: clamp(.68rem, 1.1vw, .78rem);
  letter-spacing: .16em;
  text-transform: uppercase;
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: .75rem;
  justify-self: start;
  text-decoration: none;
}

.wordmark-mark {
  display: grid;
  width: 2.1rem;
  height: 2.1rem;
  place-items: center;
  border: 1px solid color-mix(in srgb, var(--glow) 38%, transparent);
  border-radius: 999px;
  color: var(--glow);
  font-size: 1.1rem;
  line-height: 1;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: clamp(.85rem, 2vw, 2rem);
}

.nav a,
.nav-return {
  text-decoration: none;
}

.nav-return {
  justify-self: end;
}

.hero {
  position: relative;
  min-height: 100svh;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(18rem, .62fr);
  align-items: end;
  gap: clamp(1.5rem, 5vw, 6rem);
  padding: clamp(7rem, 12vw, 11rem) var(--page-gutter) clamp(5rem, 9vw, 8rem);
  overflow: hidden;
  isolation: isolate;
}

.abyss-plate {
  position: absolute;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  transform: translate3d(0, 0, 0) scale(1.02);
  transition: transform 1.2s cubic-bezier(.2, .7, .15, 1), opacity 1.2s ease;
}

.bathymetry {
  position: absolute;
  left: max(-28rem, -26vw);
  bottom: max(-16rem, -16vw);
  width: min(118rem, 154vw);
  max-width: none;
  opacity: .9;
  filter: saturate(.84) contrast(1.06);
  transform: rotate(-5deg);
}

.light-vault {
  position: absolute;
  inset: -18% -10% 35% -10%;
  background:
    radial-gradient(ellipse at 50% 0%, color-mix(in srgb, var(--glow) 58%, transparent) 0 6rem, transparent 34rem),
    conic-gradient(from 210deg at 52% -8%, transparent, color-mix(in srgb, var(--glow) 19%, transparent), transparent, color-mix(in srgb, var(--foam) 10%, transparent), transparent);
  mix-blend-mode: multiply;
  opacity: .42;
}

.pressure-rings {
  position: absolute;
  right: -18rem;
  top: 14svh;
  width: min(68rem, 120vw);
  aspect-ratio: 1;
  border: 1px solid color-mix(in srgb, var(--glow) 18%, transparent);
  border-radius: 50%;
  opacity: .65;
}

.pressure-rings::before,
.pressure-rings::after {
  position: absolute;
  inset: 15%;
  border: 1px solid color-mix(in srgb, var(--foam) 16%, transparent);
  border-radius: inherit;
  content: "";
}

.pressure-rings::after {
  inset: 34%;
  border-color: color-mix(in srgb, var(--deep-glow) 56%, transparent);
}

.hero-copy {
  max-width: 66rem;
}

.eyebrow,
.section-kicker,
.card-number,
.depth-card span,
.depth-card dt,
.product-facts dt,
.record-list dt,
.signals span,
.footer {
  font-family: var(--mono);
  letter-spacing: .16em;
  text-transform: uppercase;
}

.eyebrow {
  margin: 0 0 1.4rem;
  color: var(--glow);
  font-size: clamp(.72rem, 1vw, .86rem);
}

h1,
h2,
h3,
p,
dl,
ol {
  margin-top: 0;
}

h1,
h2,
h3 {
  color: var(--mist);
  font-family: var(--serif);
  font-weight: 400;
  line-height: .9;
  letter-spacing: -.06em;
}

h1 {
  max-width: 12ch;
  margin-bottom: clamp(1.5rem, 3vw, 2.5rem);
  font-size: clamp(4.7rem, 13vw, 14rem);
}

h2 {
  font-size: clamp(3rem, 8vw, 8.8rem);
}

h3 {
  margin-bottom: 1.1rem;
  font-size: clamp(2rem, 3.7vw, 4.2rem);
}

.hero-lead {
  max-width: 47rem;
  margin-bottom: 2rem;
  color: var(--foam);
  font-family: var(--serif);
  font-size: clamp(1.22rem, 2.3vw, 2rem);
  line-height: 1.25;
}

.hero-actions,
.footer,
.product-facts div,
.record-list div {
  display: flex;
  flex-wrap: wrap;
  gap: .85rem;
}

.button {
  display: inline-flex;
  min-height: 3.2rem;
  align-items: center;
  justify-content: center;
  padding: .82rem 1.05rem;
  border: 1px solid color-mix(in srgb, var(--foam) 28%, transparent);
  border-radius: 999px;
  font-family: var(--mono);
  font-size: .76rem;
  letter-spacing: .12em;
  text-decoration: none;
  text-transform: uppercase;
  transition: border-color .25s ease, color .25s ease, background .25s ease, transform .25s ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
}

.button.primary {
  background: var(--mist);
  color: var(--abyss);
  border-color: var(--mist);
}

.button.secondary {
  color: var(--foam);
  background: color-mix(in srgb, var(--slate) 58%, transparent);
}

.depth-card {
  align-self: center;
  justify-self: end;
  width: min(100%, 23rem);
  padding: 1.2rem;
  border: 1px solid color-mix(in srgb, var(--glow) 24%, transparent);
  background:
    linear-gradient(145deg, color-mix(in srgb, var(--slate) 74%, transparent), color-mix(in srgb, var(--basin) 72%, transparent)),
    var(--basin);
  color: var(--foam);
  clip-path: polygon(0 0, calc(100% - 2rem) 0, 100% 2rem, 100% 100%, 2rem 100%, 0 calc(100% - 2rem));
}

.depth-card span {
  display: block;
  margin-bottom: 2rem;
  color: var(--glow);
  font-size: .72rem;
}

.depth-card dl,
.product-facts,
.record-list {
  margin-bottom: 0;
}

.depth-card div {
  display: grid;
  grid-template-columns: 6rem 1fr;
  gap: 1rem;
  padding: 1rem 0;
  border-top: 1px solid color-mix(in srgb, var(--foam) 14%, transparent);
}

.depth-card dt,
.product-facts dt,
.record-list dt {
  color: var(--drift);
  font-size: .65rem;
}

.depth-card dd,
.product-facts dd,
.record-list dd {
  margin: 0;
  color: var(--mist);
}

.descent-cue {
  position: absolute;
  left: var(--page-gutter);
  bottom: 1.5rem;
  display: inline-flex;
  gap: .6rem;
  align-items: center;
  color: var(--drift);
  font-family: var(--mono);
  font-size: .7rem;
  letter-spacing: .16em;
  text-decoration: none;
  text-transform: uppercase;
}

.section {
  position: relative;
  padding: clamp(5rem, 11vw, 11rem) var(--page-gutter);
}

.section-shell {
  max-width: 92rem;
  margin-inline: auto;
}

.section-kicker {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: .8rem;
  margin-bottom: clamp(2rem, 6vw, 6rem);
  color: var(--drift);
  font-size: clamp(.66rem, 1vw, .82rem);
}

.section-kicker span {
  padding-top: .75rem;
  border-top: 1px solid color-mix(in srgb, var(--foam) 18%, transparent);
}

.section-head {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(18rem, .55fr);
  align-items: end;
  gap: clamp(1.5rem, 5vw, 5rem);
  margin-bottom: clamp(2.5rem, 7vw, 6rem);
}

.section-head h2 {
  margin-bottom: 0;
}

.section-head p:not(.eyebrow),
.product-copy > p,
.engineering-copy > p,
.record-note p,
.layer-card p,
.signals p {
  color: var(--foam);
  font-size: clamp(1rem, 1.5vw, 1.22rem);
}

.layer-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: clamp(.85rem, 2vw, 1.5rem);
}

.layer-card {
  position: relative;
  min-height: 23rem;
  padding: clamp(1rem, 2.6vw, 2rem);
  border: 1px solid color-mix(in srgb, var(--foam) 18%, transparent);
  background:
    linear-gradient(180deg, color-mix(in srgb, var(--shelf) 82%, transparent), color-mix(in srgb, var(--abyss) 62%, transparent)),
    var(--shelf);
  overflow: hidden;
}

.layer-card::before {
  position: absolute;
  inset: auto -10% -35% -10%;
  height: 55%;
  background: radial-gradient(ellipse at 50% 100%, color-mix(in srgb, var(--deep-glow) 55%, transparent), transparent 70%);
  content: "";
}

.layer-card > * {
  position: relative;
}

.layer-card-a {
  grid-column: 1 / span 5;
  margin-top: 5rem;
}

.layer-card-b {
  grid-column: 6 / span 4;
}

.layer-card-c {
  grid-column: 8 / span 5;
  margin-top: 7rem;
}

.card-number {
  display: block;
  margin-bottom: 5rem;
  color: var(--glow);
  font-size: .74rem;
}

.product {
  display: grid;
  grid-template-columns: minmax(16rem, .9fr) minmax(0, 1fr);
  min-height: 88svh;
  align-items: center;
  gap: clamp(2rem, 7vw, 7rem);
  background:
    linear-gradient(90deg, color-mix(in srgb, var(--abyss) 0%, transparent), color-mix(in srgb, var(--ridge) 42%, transparent)),
    radial-gradient(circle at 24% 50%, color-mix(in srgb, var(--deep-glow) 70%, transparent), transparent 33rem);
}

.product-art {
  position: relative;
  min-height: 38rem;
}

.submersible {
  position: absolute;
  left: 12%;
  top: 40%;
  width: min(24rem, 55vw);
  aspect-ratio: 2.6 / 1;
  border: 1px solid color-mix(in srgb, var(--glow) 45%, transparent);
  border-radius: 999px 56% 56% 999px;
  background:
    radial-gradient(circle at 18% 50%, var(--glow) 0 .5rem, transparent .58rem),
    linear-gradient(90deg, color-mix(in srgb, var(--slate) 85%, transparent), color-mix(in srgb, var(--basin) 76%, transparent));
}

.submersible::before,
.submersible::after {
  position: absolute;
  content: "";
}

.submersible::before {
  left: 16%;
  top: -34%;
  width: 28%;
  height: 34%;
  border: 1px solid color-mix(in srgb, var(--glow) 32%, transparent);
  border-bottom: 0;
  border-radius: 999px 999px 0 0;
}

.submersible::after {
  right: -16%;
  top: 42%;
  width: 18%;
  height: 16%;
  border-top: 1px solid var(--glow);
  border-bottom: 1px solid var(--glow);
}

.beam {
  position: absolute;
  left: 29%;
  top: 48%;
  width: min(52rem, 82vw);
  height: 1px;
  transform-origin: left center;
  background: linear-gradient(90deg, var(--glow), transparent);
  opacity: .44;
}

.beam-one {
  transform: rotate(-14deg);
}

.beam-two {
  transform: rotate(15deg);
  opacity: .28;
}

.product-copy {
  max-width: 48rem;
}

.product-copy h2,
.record-panel h2,
.engineering-copy h2 {
  margin-bottom: 1.5rem;
}

.product-facts,
.record-list {
  display: grid;
  gap: .8rem;
  margin-top: 2rem;
}

.product-facts div,
.record-list div {
  justify-content: space-between;
  padding: 1rem 0;
  border-top: 1px solid color-mix(in srgb, var(--foam) 16%, transparent);
}

.engineering-grid {
  display: grid;
  grid-template-columns: minmax(0, .85fr) minmax(22rem, .7fr);
  gap: clamp(2rem, 7vw, 7rem);
  align-items: start;
}

.signals {
  display: grid;
  gap: 1rem;
  padding: 0;
  list-style: none;
}

.signals li {
  padding: 1.25rem;
  border: 1px solid color-mix(in srgb, var(--foam) 16%, transparent);
  background: color-mix(in srgb, var(--ridge) 72%, transparent);
}

.signals span {
  display: block;
  margin-bottom: 1.8rem;
  color: var(--glow);
  font-size: .7rem;
}

.signals strong {
  display: block;
  margin-bottom: .6rem;
  color: var(--mist);
  font-family: var(--serif);
  font-size: clamp(1.8rem, 3vw, 3rem);
  font-weight: 400;
  letter-spacing: -.04em;
}

.signals p {
  margin-bottom: 0;
}

.record {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(18rem, .48fr);
  gap: clamp(2rem, 5vw, 5rem);
  align-items: end;
  min-height: 78svh;
}

.record-panel {
  padding: clamp(1.2rem, 3vw, 2rem);
  border: 1px solid color-mix(in srgb, var(--glow) 22%, transparent);
  background:
    radial-gradient(circle at 78% 12%, color-mix(in srgb, var(--deep-glow) 52%, transparent), transparent 21rem),
    color-mix(in srgb, var(--shelf) 76%, transparent);
}

.record-note {
  color: var(--foam);
}

.footer {
  justify-content: space-between;
  gap: 1rem;
  padding: 2rem var(--page-gutter);
  color: var(--drift);
  font-size: .68rem;
}

.footer p {
  margin: 0;
}

html.js [data-reveal],
html.js [data-rise] {
  opacity: 1;
  transition: transform .9s cubic-bezier(.2, .75, .18, 1);
}

html.js [data-reveal] {
  transform: translateY(1.4rem) scale(.985);
}

html.js [data-rise] {
  transform: translateY(2.4rem);
}

html.js [data-reveal].is-in,
html.js [data-rise].is-in {
  opacity: 1;
  transform: translateY(0) scale(1);
}

html.js.reveals-complete [data-reveal],
html.js.reveals-complete [data-rise] {
  opacity: 1;
  transform: none;
  transition: none;
}

.depth-mid .abyss-plate {
  transform: translate3d(0, -2.5svh, 0) scale(1.045);
}

.depth-low .abyss-plate {
  transform: translate3d(0, -5svh, 0) scale(1.075);
  opacity: .74;
}

.depth-low .light-vault {
  opacity: .26;
}

.depth-low .pressure-rings {
  opacity: .36;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: .001ms !important;
  }

  html.js [data-reveal],
  html.js [data-rise],
  html.js [data-reveal].is-in,
  html.js [data-rise].is-in,
  .abyss-plate {
    opacity: 1;
    transform: none;
  }
}

@media (max-width: 920px) {
  .topbar {
    position: absolute;
    grid-template-columns: 1fr auto;
  }

  .nav {
    display: none;
  }

  .hero,
  .section-head,
  .product,
  .engineering-grid,
  .record {
    grid-template-columns: 1fr;
  }

  .hero {
    align-items: start;
    padding-top: 8rem;
  }

  .depth-card {
    justify-self: stretch;
    align-self: end;
  }

  .product-art {
    min-height: 20rem;
    order: 2;
  }

  .layer-card-a,
  .layer-card-b,
  .layer-card-c {
    grid-column: 1 / -1;
    margin-top: 0;
  }
}

@media (max-width: 620px) {
  .hero,
  .product,
  .product-art,
  .abyss-plate {
    max-width: 100%;
    overflow: hidden;
  }

  .topbar {
    padding-top: .8rem;
  }

  .wordmark,
  .nav-return {
    letter-spacing: .1em;
  }

  .wordmark span:last-child {
    max-width: 10rem;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
  }

  h1 {
    max-width: 9ch;
    font-size: clamp(4rem, 21vw, 6.1rem);
  }

  h2 {
    font-size: clamp(2.9rem, 15vw, 5rem);
  }

  .hero {
    min-height: 96svh;
    gap: 2rem;
  }

  .hero-actions,
  .button {
    width: 100%;
  }

  .section-kicker {
    grid-template-columns: 1fr;
  }

  .depth-card div,
  .product-facts div,
  .record-list div {
    display: grid;
    grid-template-columns: 1fr;
    gap: .25rem;
  }

  .bathymetry {
    left: 50%;
    bottom: -8rem;
    width: 82rem;
    transform: translateX(-50%) rotate(-5deg);
  }

  .pressure-rings {
    right: -22rem;
  }

  .light-vault {
    inset-inline: 0;
  }

  .beam {
    width: 70vw;
    max-width: calc(100vw - 4rem);
  }

  .submersible {
    width: 17rem;
  }

  .footer {
    display: grid;
  }
}