:root {
  color-scheme: dark;
  --obsidian: #120f0b;
  --obsidian-2: #1a1510;
  --charcoal: #262019;
  --smoke: rgba(245, 236, 220, 0.1);
  --line: rgba(245, 236, 220, 0.16);
  --line-strong: rgba(245, 236, 220, 0.32);
  --text: #f8f0e4;
  --muted: #c9bda8;
  --dim: #8f826e;
  --gold: #d8b46a;
  --rose: #b97a68;
  --green: #91a071;
  --max: 1180px;
  --mono: "Geist Mono", "JetBrains Mono", monospace;
  --sans: "Geist", Inter, system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 12% 12%, rgba(216, 180, 106, 0.18), transparent 28rem),
    radial-gradient(circle at 86% 8%, rgba(185, 122, 104, 0.13), transparent 30rem),
    linear-gradient(180deg, #19130e 0%, #100d0a 42%, #070605 100%);
  color: var(--text);
  font-family: var(--sans);
  line-height: 1.5;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  background:
    linear-gradient(rgba(248, 240, 228, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(248, 240, 228, 0.025) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(to bottom, black 0%, transparent 76%);
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    linear-gradient(90deg, rgba(18, 15, 11, 0.78), rgba(18, 15, 11, 0.28), rgba(18, 15, 11, 0.82)),
    url("./assets/human-hands.jpg") right 15% top 10% / min(44vw, 620px) auto no-repeat;
  opacity: 0.16;
  mix-blend-mode: screen;
  filter: grayscale(0.2) sepia(0.45) contrast(1.08);
}

a {
  color: inherit;
  text-decoration: none;
}

.stellar-canvas {
  position: fixed;
  inset: 0;
  z-index: -1;
  width: 100%;
  height: 100%;
  opacity: 0.36;
  pointer-events: none;
  mix-blend-mode: screen;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 10px max(20px, calc((100vw - var(--max)) / 2));
  border-bottom: 1px solid var(--line);
  background: rgba(18, 15, 11, 0.74);
  backdrop-filter: blur(20px);
}

.brand,
.nav-links {
  display: flex;
  align-items: center;
}

.brand {
  flex: 0 0 auto;
  min-width: 0;
}

.header-logo {
  display: block;
  width: clamp(168px, 15vw, 222px);
  height: auto;
  opacity: 0.86;
  mix-blend-mode: screen;
  filter: sepia(0.28) saturate(0.72) brightness(1.08) contrast(1.03);
}

.nav-links {
  gap: clamp(12px, 2.8vw, 34px);
  color: var(--muted);
  font-family: var(--mono);
  font-size: 13px;
}

.nav-links a {
  transition: color 160ms ease;
}

.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--text);
}

.section-shell {
  position: relative;
  z-index: 2;
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
}

.immersive-section {
  position: relative;
  overflow: hidden;
  isolation: isolate;
}

.immersive-section::before,
.immersive-section::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.immersive-section::after {
  background:
    linear-gradient(90deg, rgba(18, 15, 11, 0.84), rgba(18, 15, 11, 0.42) 48%, rgba(18, 15, 11, 0.78)),
    radial-gradient(circle at 50% 50%, transparent, rgba(18, 15, 11, 0.58) 72%);
}

.hero {
  min-height: calc(100vh - 64px);
}

.hero::before {
  background:
    linear-gradient(180deg, rgba(18, 15, 11, 0.08), rgba(18, 15, 11, 0.34) 72%, rgba(18, 15, 11, 0.9)),
    url("./assets/hero-zodiac-field.png") center / cover no-repeat;
  opacity: 0.94;
  filter: sepia(0.12) saturate(0.9) contrast(1.06) brightness(1.02);
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(260px, 0.42fr);
  gap: clamp(36px, 7vw, 92px);
  align-items: center;
  min-height: calc(100vh - 64px);
  padding: 78px 0 72px;
}

.hero-copy {
  max-width: 840px;
}

.eyebrow,
.kicker {
  margin: 0 0 16px;
  color: var(--gold);
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  text-transform: uppercase;
}

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

h1 {
  max-width: 880px;
  margin-bottom: 24px;
  font-size: clamp(44px, 7.4vw, 96px);
  line-height: 0.92;
  font-weight: 600;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(34px, 5.8vw, 82px);
  line-height: 0.94;
  font-weight: 600;
}

h3 {
  margin-bottom: 14px;
  font-size: clamp(22px, 2vw, 30px);
  line-height: 1.1;
  font-weight: 600;
}

.hero-lede {
  max-width: 650px;
  margin-bottom: 30px;
  color: var(--muted);
  font-size: clamp(18px, 2vw, 24px);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  padding: 10px 19px;
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 500;
}

.button-primary {
  background: var(--text);
  color: var(--obsidian);
}

.button-secondary {
  background: rgba(216, 180, 106, 0.08);
  color: var(--text);
}

.hero-signal {
  align-self: stretch;
  display: grid;
  align-content: center;
  justify-items: end;
  min-height: 460px;
  padding-bottom: 8px;
}

.bird-emblem {
  width: min(25.6vw, 344px);
  max-height: 52vh;
  object-fit: contain;
  opacity: 0.74;
  mix-blend-mode: screen;
  filter: grayscale(1) sepia(0.16) saturate(0.72) contrast(1.08) brightness(1.05);
}

.telemetry {
  display: grid;
  width: min(410px, 100%);
  margin-top: 28px;
  gap: 6px;
  color: rgba(248, 240, 228, 0.72);
  font-family: var(--mono);
  font-size: 12px;
}

.telemetry span {
  border-top: 1px solid var(--line);
  padding-top: 7px;
}

.thesis-band {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.thesis-band::before {
  background:
    linear-gradient(90deg, rgba(18, 15, 11, 0.9), rgba(18, 15, 11, 0.48), rgba(18, 15, 11, 0.82)),
    url("./assets/pixel-mask.png") left 2% center / min(45vw, 660px) auto no-repeat,
    url("./assets/human-hands.jpg") right 10% center / min(38vw, 560px) auto no-repeat;
  opacity: 0.56;
  filter: grayscale(0.08) sepia(0.5) saturate(0.92) contrast(1.14) brightness(1.12);
}

.thesis-grid {
  display: grid;
  grid-template-columns: 0.38fr 1.08fr 0.9fr;
  gap: clamp(22px, 4vw, 56px);
  padding: 110px 0;
}

.thesis-grid h2 {
  margin-bottom: 0;
}

.thesis-grid p:not(.kicker) {
  color: var(--muted);
  font-size: 17px;
}

.research {
  padding: 122px 0;
}

.research::before {
  background:
    linear-gradient(180deg, rgba(18, 15, 11, 0.04), rgba(18, 15, 11, 0.32)),
    linear-gradient(90deg, rgba(18, 15, 11, 0.58), rgba(18, 15, 11, 0.12) 52%, rgba(18, 15, 11, 0.54)),
    url("./assets/research-water-field.jpg") center 64% / cover no-repeat;
  opacity: 0.88;
  filter: sepia(0.12) saturate(1.02) contrast(1.02) brightness(1.16);
}

.research::after {
  background:
    linear-gradient(90deg, rgba(18, 15, 11, 0.66), rgba(18, 15, 11, 0.18) 48%, rgba(18, 15, 11, 0.62)),
    radial-gradient(circle at 54% 64%, transparent, rgba(18, 15, 11, 0.28) 74%);
}

.section-heading {
  display: grid;
  grid-template-columns: 0.5fr 1fr;
  gap: 28px;
  align-items: end;
  margin-bottom: 44px;
}

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

.program-grid,
.note-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
  border-radius: 7px;
  background: rgba(18, 15, 11, 0.18);
  backdrop-filter: blur(2px);
  overflow: hidden;
}

.program-card,
.note-list article {
  min-height: 340px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: clamp(22px, 3vw, 34px);
  background:
    linear-gradient(180deg, rgba(248, 240, 228, 0.045), transparent),
    rgba(18, 15, 11, 0.28);
}

.index,
.note-list span {
  display: block;
  margin-bottom: 86px;
  color: var(--gold);
  font-family: var(--mono);
  font-size: 12px;
}

.program-card p,
.note-list p,
.architecture-copy p,
.curve-copy p,
.observatory-copy p {
  color: var(--muted);
  font-size: 16px;
}

.visual-system {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.visual-system::before {
  background:
    linear-gradient(90deg, rgba(18, 15, 11, 0.86), rgba(18, 15, 11, 0.34), rgba(18, 15, 11, 0.8)),
    url("./assets/raster-manifold.png") right 8% center / min(58vw, 860px) auto no-repeat;
  opacity: 0.82;
  filter: sepia(0.18) saturate(0.72) hue-rotate(12deg) contrast(1.12) brightness(1.14);
}

.architecture-grid {
  display: grid;
  grid-template-columns: 0.84fr 0.72fr;
  gap: clamp(28px, 6vw, 80px);
  align-items: center;
  min-height: 760px;
  padding: 110px 0;
}

.spec-list {
  display: grid;
  gap: 0;
  margin: 34px 0 0;
  border-top: 1px solid var(--line);
}

.spec-list div {
  display: grid;
  grid-template-columns: 0.36fr 1fr;
  gap: 18px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

dt {
  color: var(--text);
  font-family: var(--mono);
  font-size: 13px;
}

dd {
  margin: 0;
  color: var(--muted);
}

.architecture-signal {
  justify-self: end;
  width: min(500px, 100%);
  border-top: 1px solid var(--line-strong);
  color: rgba(248, 240, 228, 0.72);
  font-family: var(--mono);
  font-size: 12px;
}

.architecture-signal p {
  margin: 0;
  border-bottom: 1px solid var(--line);
  padding: 15px 0;
}

.curve-field {
  border-bottom: 1px solid var(--line);
  background: rgba(7, 6, 5, 0.78);
}

.curve-field::before {
  background:
    radial-gradient(circle at 72% 48%, rgba(20, 166, 160, 0.18), transparent 30rem),
    radial-gradient(circle at 82% 72%, rgba(185, 70, 130, 0.16), transparent 26rem);
  opacity: 0.72;
}

.curve-field::after {
  background:
    linear-gradient(90deg, rgba(18, 15, 11, 0.9), rgba(18, 15, 11, 0.52) 54%, rgba(18, 15, 11, 0.88)),
    radial-gradient(circle at 72% 48%, transparent, rgba(18, 15, 11, 0.7) 68%);
}

.curve-grid {
  display: grid;
  grid-template-columns: 0.72fr 0.9fr;
  gap: clamp(34px, 7vw, 92px);
  align-items: center;
  min-height: 660px;
  padding: 96px 0;
}

.curve-copy {
  max-width: 590px;
}

.curve-figure {
  margin: 0;
  justify-self: end;
  width: min(520px, 100%);
}

.asymptotic-graphic {
  display: block;
  width: 100%;
  opacity: 0.8;
  mix-blend-mode: screen;
  filter: saturate(0.88) sepia(0.1) contrast(1.08) brightness(0.94);
  mask-image: radial-gradient(circle at 50% 50%, black 42%, rgba(0, 0, 0, 0.84) 62%, transparent 84%);
}

.observatory {
  min-height: 790px;
}

.observatory::before {
  background:
    linear-gradient(90deg, rgba(18, 15, 11, 0.64), rgba(18, 15, 11, 0.3), rgba(18, 15, 11, 0.72)),
    url("./assets/human-shore.jpg") center / cover no-repeat,
    url("./assets/zodiac-cluster.png") left 4% top 16% / min(54vw, 780px) auto no-repeat;
  opacity: 0.72;
  filter: sepia(0.22) saturate(0.9) contrast(1.08) brightness(1.12);
}

.observatory-grid {
  display: grid;
  grid-template-columns: 0.86fr 0.44fr;
  gap: clamp(28px, 6vw, 80px);
  align-items: end;
  min-height: 790px;
  padding: 90px 0;
}

.observatory-copy {
  max-width: 680px;
}

.human-caption {
  justify-self: end;
  max-width: 310px;
  border-top: 1px solid var(--line-strong);
  padding-top: 14px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 12px;
}

.field-notes {
  padding: 116px 0;
}

.field-notes::before {
  background:
    linear-gradient(90deg, rgba(18, 15, 11, 0.78), rgba(18, 15, 11, 0.48)),
    url("./assets/human-reading.jpg") right 7% top 50% / min(42vw, 590px) auto no-repeat;
  opacity: 0.46;
  filter: sepia(0.3) saturate(0.82) contrast(1.14) brightness(1.12);
}

.note-list article {
  min-height: 290px;
}

.note-list span {
  margin-bottom: 58px;
  color: var(--green);
}

.closing {
  min-height: 84vh;
  display: grid;
  place-items: end start;
  border-top: 1px solid var(--line);
}

.closing::before {
  background:
    linear-gradient(180deg, rgba(18, 15, 11, 0.02), rgba(18, 15, 11, 0.54)),
    linear-gradient(90deg, rgba(18, 15, 11, 0.48), rgba(18, 15, 11, 0.08), rgba(18, 15, 11, 0.56)),
    url("./assets/liminal-glands-footer.jpg") center / cover no-repeat;
  opacity: 0.96;
  filter: sepia(0.18) saturate(0.92) contrast(1.04) brightness(1.12);
}

.closing::after {
  background:
    linear-gradient(90deg, rgba(18, 15, 11, 0.58), rgba(18, 15, 11, 0.18) 48%, rgba(18, 15, 11, 0.56)),
    radial-gradient(circle at 50% 46%, transparent, rgba(18, 15, 11, 0.32) 74%);
}

.closing-copy {
  position: relative;
  z-index: 2;
  width: min(780px, calc(100% - 40px));
  margin: 0 auto;
  padding: 0 0 76px;
}

.closing-copy h2 {
  max-width: 760px;
}

@media (max-width: 900px) {
  body::after {
    background-position: right -120px top 9%;
    background-size: 520px auto;
  }

  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .nav-links {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 4px;
  }

  .header-logo {
    width: min(170px, 54vw);
  }

  .hero-inner,
  .thesis-grid,
  .section-heading,
  .architecture-grid,
  .curve-grid,
  .observatory-grid {
    grid-template-columns: 1fr;
  }

  .hero,
  .hero-inner {
    min-height: auto;
  }

  .hero::before {
    background:
      linear-gradient(180deg, rgba(18, 15, 11, 0.24), rgba(18, 15, 11, 0.78)),
      url("./assets/hero-zodiac-field.png") center / cover no-repeat;
    opacity: 0.88;
  }

  .hero-signal {
    min-height: 260px;
    justify-items: start;
  }

  .bird-emblem {
    width: min(52.8vw, 240px);
    max-height: 220px;
    opacity: 0.58;
  }

  .program-grid,
  .note-list {
    grid-template-columns: 1fr;
  }

  .program-card,
  .note-list article {
    min-height: auto;
  }

  .index,
  .note-list span {
    margin-bottom: 42px;
  }

  .architecture-grid,
  .observatory-grid {
    min-height: auto;
  }

  .architecture-signal,
  .curve-figure,
  .human-caption {
    justify-self: start;
  }
}

@media (max-width: 560px) {
  .section-shell {
    width: min(var(--max), calc(100% - 28px));
  }

  .hero-inner {
    padding-top: 48px;
  }

  h1 {
    font-size: clamp(40px, 12.5vw, 52px);
  }

  h2 {
    font-size: clamp(34px, 12vw, 52px);
  }

  .hero-actions {
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .thesis-grid,
  .architecture-grid,
  .curve-grid,
  .research,
  .field-notes {
    padding-top: 72px;
    padding-bottom: 72px;
  }

  .spec-list div {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .observatory-grid {
    padding: 76px 0;
  }
}