:root {
  --void: #020306;
  --ink: #07131a;
  --chalk: #f4fbff;
  --mist: rgba(244, 251, 255, 0.72);
  --blue: #1b7fe8;
  --cyan: #72f5ff;
  --gold: #d8b15e;
  --red: #e24b3b;
  --green: #7dffbd;
  --line: rgba(159, 229, 255, 0.24);
  --glass: rgba(3, 14, 22, 0.68);
  --max: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--chalk);
  background:
    radial-gradient(circle at 12% 18%, rgba(27, 127, 232, 0.28), transparent 28rem),
    radial-gradient(circle at 88% 8%, rgba(216, 177, 94, 0.18), transparent 22rem),
    linear-gradient(180deg, #000 0%, #031017 42%, #100907 76%, #000 100%);
  font-family: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;
  line-height: 1.5;
  overflow-x: hidden;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  content: "";
  background:
    linear-gradient(rgba(255,255,255,0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 28px 28px;
  mask-image: linear-gradient(180deg, rgba(0,0,0,0.9), transparent 86%);
}

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

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

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 10;
  display: grid;
  grid-template-columns: minmax(130px, 210px) 1fr;
  gap: 24px;
  align-items: center;
  padding: 18px clamp(18px, 4vw, 56px);
  background: linear-gradient(180deg, rgba(0, 0, 0, 0.82), rgba(0, 0, 0, 0));
}

.brand img {
  width: min(210px, 42vw);
}

nav {
  display: flex;
  justify-content: flex-end;
  gap: clamp(10px, 2vw, 28px);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
}

nav a {
  color: rgba(244, 251, 255, 0.74);
}

nav a:hover {
  color: var(--cyan);
}

.hero {
  position: relative;
  min-height: 100svh;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  align-items: end;
  padding: 128px clamp(18px, 5vw, 72px) 42px;
  isolation: isolate;
}

.hero-media {
  position: absolute;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  background: #020306;
}

.hero-back {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.96) contrast(1.08) brightness(0.82);
}

.hero-panther {
  object-position: center;
  opacity: 0.98;
}

.hero-media::after {
  position: absolute;
  inset: 0;
  content: "";
  background:
    linear-gradient(90deg, rgba(0,0,0,0.68), rgba(0,0,0,0.16) 50%, rgba(0,0,0,0.42)),
    linear-gradient(180deg, rgba(0,0,0,0.18), rgba(0,0,0,0.72));
}

.hero-copy {
  position: relative;
  z-index: 1;
  width: min(760px, 100%);
}

.hero-bird {
  position: absolute;
  z-index: 1;
  left: clamp(178px, 14vw, 210px);
  bottom: clamp(490px, 52vh, 535px);
  width: clamp(120px, 14vw, 190px);
  opacity: 0.9;
  mix-blend-mode: screen;
  filter: contrast(1.18) brightness(0.92);
}

.kicker,
.section-mark {
  margin: 0 0 18px;
  color: var(--green);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.18em;
}

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

h1 {
  margin-bottom: 14px;
  font-family: Impact, Haettenschweiler, "Arial Narrow Bold", sans-serif;
  font-size: clamp(74px, 17vw, 226px);
  line-height: 0.78;
  letter-spacing: 0;
}

h2 {
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(34px, 6vw, 82px);
  line-height: 0.96;
  font-weight: 500;
}

h3 {
  font-size: 17px;
  color: var(--chalk);
}

.manifesto {
  width: min(690px, 100%);
  margin-bottom: 0;
  color: rgba(244, 251, 255, 0.82);
  font-size: clamp(17px, 2.3vw, 25px);
}

section {
  position: relative;
  padding: clamp(76px, 11vw, 150px) clamp(18px, 5vw, 72px);
}

.membrane-grid,
.protocol-layout {
  width: min(var(--max), 100%);
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(320px, 1.05fr);
  gap: clamp(28px, 6vw, 86px);
  align-items: center;
}

.membrane-copy p,
.artifact-copy p,
.atlas-lead p,
.protocol-layout p,
.context-section p {
  color: rgba(244, 251, 255, 0.74);
  font-size: 16px;
}

.portal-window {
  margin: 0;
  padding: 12px;
  border: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.46);
  transform: rotate(1.5deg);
}

.portal-window img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  mix-blend-mode: screen;
}

figcaption {
  margin-top: 10px;
  color: rgba(244, 251, 255, 0.58);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.physics-section {
  background:
    linear-gradient(90deg, rgba(0,0,0,0.78), rgba(0,0,0,0.2) 48%, rgba(0,0,0,0.72)),
    linear-gradient(180deg, rgba(0,0,0,0.42), rgba(0,0,0,0.74)),
    url("./assets/surf-horizon.jpg") center / cover no-repeat;
}

.physics-section > h2,
.physics-section > .section-mark,
.atlas-section > .section-mark {
  width: min(var(--max), 100%);
  margin-left: auto;
  margin-right: auto;
}

.model-strip {
  width: min(var(--max), 100%);
  margin: 34px auto 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.model-strip article {
  min-height: 320px;
  padding: clamp(22px, 3vw, 34px);
  border-left: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.34);
  backdrop-filter: blur(2px);
}

.model-strip article:first-child {
  border-left: 0;
}

.model-strip span,
.protocol-list span {
  color: var(--gold);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.16em;
}

.model-strip p {
  color: rgba(244, 251, 255, 0.68);
}

.artifact-section {
  display: grid;
  grid-template-columns: minmax(280px, 0.92fr) minmax(0, 0.9fr);
  gap: clamp(30px, 7vw, 96px);
  align-items: center;
  width: min(var(--max), 100%);
  margin: 0 auto;
}

.floppy-card {
  margin: 0;
  transform: rotate(-4deg);
  filter: drop-shadow(0 28px 44px rgba(0, 0, 0, 0.45));
}

.artifact-copy ul {
  display: grid;
  gap: 10px;
  padding: 0;
  margin: 28px 0 0;
  list-style: none;
}

.artifact-copy li {
  padding: 10px 0;
  border-top: 1px solid var(--line);
  color: var(--cyan);
}

.atlas-section {
  overflow: hidden;
}

.atlas-lead {
  width: min(var(--max), 100%);
  margin: 0 auto 38px;
  display: grid;
  grid-template-columns: minmax(0, 0.78fr) minmax(260px, 0.42fr);
  gap: 28px;
  align-items: end;
}

.image-orbit {
  width: min(1320px, 100%);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 14px;
}

.image-orbit figure {
  margin: 0;
  min-height: 240px;
  padding: 8px;
  border: 1px solid rgba(244, 251, 255, 0.14);
  background: rgba(0, 0, 0, 0.38);
}

.image-orbit img {
  width: 100%;
  height: 100%;
  min-height: 210px;
  object-fit: cover;
  filter: saturate(1.08) contrast(1.04);
}

.image-orbit figure:nth-child(1) {
  grid-column: span 3;
  grid-row: span 2;
}

.image-orbit figure:nth-child(2) {
  grid-column: span 5;
}

.image-orbit figure:nth-child(3) {
  grid-column: span 4;
  grid-row: span 2;
}

.image-orbit figure:nth-child(4) {
  grid-column: span 4;
}

.image-orbit figure:nth-child(5) {
  grid-column: span 5;
}

.image-orbit figure:nth-child(6) {
  grid-column: span 3;
}

.protocol-section {
  background:
    linear-gradient(90deg, rgba(0,0,0,0.82), rgba(0,0,0,0.28) 52%, rgba(0,0,0,0.78)),
    linear-gradient(180deg, rgba(0,0,0,0.34), rgba(0,0,0,0.78)),
    url("./assets/spinning-top.jpeg") center / cover no-repeat;
}

.protocol-list {
  padding: 0;
  margin: 0;
  list-style: none;
  counter-reset: step;
  border-top: 1px solid var(--line);
}

.protocol-list li {
  position: relative;
  display: grid;
  grid-template-columns: 118px 1fr;
  gap: 18px;
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
}

.protocol-list li::before {
  counter-increment: step;
  content: "0" counter(step);
  position: absolute;
  right: 0;
  top: 18px;
  color: rgba(114, 245, 255, 0.22);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 44px;
}

.protocol-list p {
  position: relative;
  z-index: 1;
  margin: 0;
}

.context-section {
  width: min(var(--max), 100%);
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 0.52fr) minmax(320px, 0.78fr);
  gap: clamp(28px, 6vw, 70px);
  align-items: start;
}

.context-stack {
  display: grid;
  gap: 12px;
  transform: perspective(900px) rotateY(8deg);
}

.context-stack img {
  width: 100%;
  border: 1px solid rgba(244, 251, 255, 0.14);
  opacity: 0.36;
  filter: grayscale(1) contrast(1.2);
  mix-blend-mode: screen;
}

.context-stack img:hover {
  opacity: 0.78;
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 26px clamp(18px, 5vw, 72px) 38px;
  color: rgba(244, 251, 255, 0.58);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

footer a {
  color: var(--cyan);
}

@media (max-width: 920px) {
  .site-header,
  .membrane-grid,
  .artifact-section,
  .atlas-lead,
  .protocol-layout,
  .context-section {
    grid-template-columns: 1fr;
  }

  .site-header {
    position: absolute;
  }

  nav {
    justify-content: flex-start;
    flex-wrap: wrap;
  }

  .hero {
    min-height: 930px;
    align-items: center;
  }

  .hero-panther {
    object-position: center top;
  }

  .hero-bird {
    left: clamp(118px, 31vw, 132px);
    right: auto;
    bottom: 612px;
    width: clamp(88px, 25vw, 112px);
    opacity: 0.82;
  }

  .model-strip {
    grid-template-columns: 1fr;
  }

  .model-strip article {
    min-height: auto;
    border-left: 0;
    border-top: 1px solid var(--line);
  }

  .model-strip article:first-child {
    border-top: 0;
  }

  .image-orbit {
    grid-template-columns: 1fr 1fr;
  }

  .image-orbit figure,
  .image-orbit figure:nth-child(n) {
    grid-column: auto;
    grid-row: auto;
  }

  footer {
    flex-direction: column;
  }
}

@media (max-width: 560px) {
  .hero {
    min-height: 820px;
    padding-top: 120px;
  }

  .hero-bird {
    left: 122px;
    right: auto;
    bottom: 610px;
    width: 96px;
  }

  h1 {
    font-size: clamp(68px, 24vw, 120px);
  }

  h2 {
    font-size: 36px;
  }

  .image-orbit {
    grid-template-columns: 1fr;
  }

  .protocol-list li {
    grid-template-columns: 1fr;
  }
}