:root {
  color-scheme: dark;
  --background: #080c12;
  --text: #f2f5fa;
  --muted: #99a4b4;
  --accent: #85b7ff;
  --line: #29313e;
  font-family: Arial, Helvetica, sans-serif;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

* { box-sizing: border-box; }
html { background: var(--background); }
body { margin: 0; color: var(--text); }
::selection { background: var(--accent); color: var(--background); }
a { color: inherit; }
a:focus-visible { outline: 2px solid var(--accent); outline-offset: 8px; border-radius: 2px; }

.page { width: min(100%, 1800px); min-height: 100svh; margin-inline: auto; padding-inline: 5.5%; display: flex; flex-direction: column; }
.masthead { min-height: 100px; display: flex; align-items: center; gap: 24px; border-bottom: 1px solid var(--line); }
.monogram { font-size: 38px; font-weight: 700; text-decoration: none; letter-spacing: -.08em; line-height: 1; padding: 4px 4px 8px 0; }
.monogram span { color: var(--accent); }
.masthead-caption { color: var(--muted); font-size: .875rem; }
.masthead-domain, .eyebrow, .coordinate, .definition-label, .footer-note { font-family: "Courier New", monospace; font-size: .75rem; line-height: 1.5; letter-spacing: .1em; }
.masthead-domain { margin-left: auto; color: var(--muted); }
main { flex: 1; display: flex; flex-direction: column; justify-content: center; }
.hero { padding-block: clamp(40px, 5vh, 72px) clamp(50px, 7vh, 90px); }
.eyebrow-row { display: flex; justify-content: space-between; gap: 20px; }
.eyebrow { color: var(--accent); }
.coordinate { color: var(--muted); white-space: nowrap; }
.domain-stage { position: relative; isolation: isolate; }
h1 { position: relative; display: flex; align-items: baseline; width: fit-content; margin: 8px 0 26px -.055em; font-size: clamp(6rem, 24.5vw, 27.5rem); font-weight: 500; line-height: 1.08; letter-spacing: -.075em; }
.human { position: relative; }
.ai { color: var(--accent); }
.asterisk { align-self: flex-start; margin-top: .95em; margin-left: .55em; color: var(--accent); font-size: .14em; line-height: 1; letter-spacing: 0; transition: transform .65s ease; }
.domain-stage:hover .asterisk { transform: rotate(90deg); }
.field { position: absolute; z-index: -1; right: 0; top: -13%; width: 42%; aspect-ratio: 1; opacity: .55; pointer-events: none; }
.field::before { content: ""; position: absolute; inset: 0; border-radius: 50%; background: radial-gradient(ellipse, #15345a55, transparent 68%); }
.field span { position: absolute; inset: 4%; border: 1px solid #2d415f; border-radius: 50%; transform: rotate(-28deg) scaleX(.55); }
.field span:nth-child(2) { transform: rotate(28deg) scaleX(.55); }
.field span:nth-child(3) { transform: rotate(90deg) scaleX(.55); }
.definitions { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
.definition { border-top: 1px solid var(--line); padding-top: 17px; }
.definition-ai { border-color: #415674; }
.definition-label { display: flex; gap: 18px; color: var(--muted); }
.definition-label > span:first-child { color: #bdc7d5; }
.definition p { display: flex; align-items: baseline; gap: 18px; margin: 10px 0 0; line-height: 1.6; }
.definition strong { font-size: 1.125rem; font-weight: 400; min-width: 35px; }
.definition p > span { font-size: 1rem; color: var(--muted); }
.definition-ai strong { color: var(--accent); }
.introduction { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; margin-top: clamp(48px, 6.5vh, 88px); }
h2 { margin: 0; font-size: clamp(1.9rem, 3.1vw, 3.4rem); font-weight: 400; line-height: 1.2; letter-spacing: -.045em; }
h2 span { color: var(--muted); }
.introduction > p { margin: 0; padding-left: 53px; font-size: 1rem; line-height: 1.8; color: var(--muted); }
footer { min-height: 80px; border-top: 1px solid var(--line); display: flex; align-items: center; justify-content: space-between; gap: 24px; color: var(--muted); font-size: .75rem; line-height: 1.5; }
.footer-note { letter-spacing: .065em; text-align: center; }
.signoff { color: var(--text); }

@media (prefers-reduced-motion: no-preference) {
  .hero { animation: arrive .8s ease-out both; }
  @keyframes arrive { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }
}

@media (min-width: 1800px) {
  .page { padding-inline: 99px; }
}

@media (max-width: 760px) {
  .page { padding-inline: 7%; }
  .masthead { min-height: 86px; gap: 18px; }
  .masthead-caption { font-size: .875rem; }
  .hero { padding-block: 38px 44px; }
  .eyebrow { max-width: 240px; font-size: .75rem; letter-spacing: .05em; }
  h1 { margin-top: 28px; margin-bottom: 34px; font-size: 25vw; }
  .field { width: 47%; top: -12%; }
  .definitions { gap: 22px; }
  .definition-label { gap: 12px; letter-spacing: .035em; }
  .definition p { flex-direction: column; gap: 3px; }
  .definition strong { font-size: 1.125rem; }
  .definition p > span { font-size: 1rem; }
  .introduction { grid-template-columns: 1fr; gap: 24px; margin-top: 44px; }
  h2 { font-size: clamp(1.8rem, 7vw, 3rem); }
  .introduction > p { padding-left: 0; max-width: 340px; }
  .desktop-break { display: none; }
  footer { padding-block: 22px; flex-wrap: wrap; gap: 14px; min-height: 100px; }
  .footer-note { order: 3; width: 100%; text-align: left; font-size: .75rem; letter-spacing: .015em; }
}

@media (max-width: 360px) {
  .page { padding-inline: 6%; }
  .masthead-caption { max-width: 120px; }
  .coordinate { display: none; }
  .definitions { gap: 16px; }
  .definition-label { gap: 8px; letter-spacing: 0; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}