:root { --ink: #102a36; --muted: #50636d; --teal: #007e80; --paper: #f5f8f9; --line: #cddde1; }
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 35px; }
body { margin: 0px; color: var(--ink); font-family: Arial, Helvetica, sans-serif; font-size: 16px; line-height: 1.65; background: white; }
a { color: inherit; text-decoration: none; }
a:focus-visible { outline: rgb(0, 182, 184) solid 3px; outline-offset: 6px; }
.skip { position: absolute; left: 15px; top: -100px; background: white; padding: 12px; z-index: 20; }
.skip:focus { top: 10px; }
header { max-width: 1400px; margin: auto; display: flex; align-items: center; justify-content: space-between; padding: 28px 6%; }
.brand { display: flex; align-items: center; gap: 14px; font-weight: 700; line-height: 1.15; font-size: 19px; }
.mark { background: var(--ink); color: white; padding: 12px 9px; font-size: 18px; letter-spacing: -1px; }
nav { display: flex; gap: 32px; font-size: 14px; font-weight: 600; }
nav a:hover, footer a:hover { color: var(--teal); }
.hero { max-width: 1400px; margin: auto; padding: 65px 6% 90px; display: grid; grid-template-columns: 1.2fr 1fr; gap: 7%; align-items: center; }
.eyebrow { font-size: 12px; font-weight: 700; letter-spacing: 2px; margin: 0px 0px 25px; color: var(--teal); }
h1, h2, h3, p { margin-top: 0px; }
h1 { font-size: clamp(42px, 5vw, 74px); line-height: 1.05; font-weight: 500; letter-spacing: -3px; margin-bottom: 30px; }
h1 em { font-family: Georgia, serif; font-weight: 400; color: var(--teal); }
.intro { max-width: 510px; font-size: 19px; color: var(--muted); line-height: 1.65; }
.button { display: inline-block; background: var(--ink); color: white; padding: 14px 24px; margin-top: 15px; font-size: 14px; font-weight: 700; }
.button:hover { background: var(--teal); }
.caption { font-size: 13px; color: var(--muted); margin: 20px 0px 0px; max-width: 400px; }
.hero-diagram { background-position-x: ; background-position-y: ; background-repeat: ; background-attachment: ; background-origin: ; background-clip: ; background-color: ; color: rgb(231, 246, 247); min-height: 465px; padding: 30px; text-align: center; border-top: 4px solid rgb(0, 177, 170); background-image: linear-gradient(rgba(255, 255, 255, 0.024) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, 0.024) 1px, transparent 1px); background-size: 25px 25px; }
.diagram-title { font-size: 12px; letter-spacing: 2px; text-align: left; color: rgb(132, 214, 212); }
.sequence { font-size: 12px; letter-spacing: 1px; margin: 35px 0px; }
.sequence span { padding: 0px 8px; color: rgb(93, 226, 214); }
.orbit { position: relative; width: 240px; height: 240px; border: 1px solid rgb(84, 126, 134); border-radius: 50%; margin: 20px auto 35px; }
.orbit::before { content: ""; position: absolute; inset: 25px; border: 1px dashed rgb(84, 126, 134); border-radius: 50%; }
.core { position: absolute; inset: 65px; border-radius: 50%; background: rgb(8, 120, 121); display: grid; place-content: center; font-size: 20px; line-height: 1.15; font-weight: 700; }
.node { position: absolute; background: rgb(21, 58, 73); border: 1px solid rgb(84, 126, 134); font-size: 14px; padding: 8px 14px; }
.n1 { top: -16px; left: 75px; }
.n2 { right: -25px; top: 100px; }
.n3 { bottom: -16px; left: 78px; }
.n4 { left: -25px; top: 100px; }
.hero-diagram p { font-size: 14px; margin-bottom: 8px; }
.diagram-note { font-size: 12px; color: rgb(167, 195, 202); }
.research { background: var(--paper); padding: 85px max(6%, -616px + 50vw); }
.section-heading { display: grid; grid-template-columns: 1fr 1fr; column-gap: 7%; }
.section-heading .eyebrow { grid-column: 1 / -1; }
h2 { font-size: clamp(30px, 3.5vw, 46px); font-weight: 500; line-height: 1.18; letter-spacing: -1.5px; }
.section-heading > p:last-child { color: var(--muted); max-width: 490px; padding-top: 4px; }
.cards { display: grid; grid-template-columns: repeat(3, 1fr); margin-top: 40px; gap: 25px; }
.cards article { background: white; border-top: 2px solid var(--teal); padding: 30px; display: flex; flex-direction: column; }
.index { font-family: Georgia, serif; font-size: 28px; color: rgb(131, 168, 175); margin-bottom: 24px; }
h3 { font-size: 21px; line-height: 1.3; font-weight: 600; margin-bottom: 18px; }
.cards p { color: var(--muted); font-size: 16px; }
.tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: auto; padding-top: 20px; }
.tags span { font-size: 12px; border: 1px solid var(--line); padding: 4px 8px; color: var(--muted); }
.platform { max-width: 1400px; margin: auto; padding: 90px 6%; display: grid; grid-template-columns: 1fr 1fr; gap: 10%; }
.platform > div > p:not(.eyebrow) { color: var(--muted); }
.features { padding: 0px; list-style: none; margin-top: 30px; }
.features li { border-bottom: 1px solid var(--line); padding: 12px 0px; font-size: 15px; }
.features li::before { content: "+"; color: var(--teal); margin-right: 15px; font-weight: bold; }
.steps article { display: flex; gap: 25px; border-bottom: 1px solid var(--line); padding: 24px 0px; }
.steps article:first-child { padding-top: 0px; }
.steps article > span { font-family: Georgia, serif; font-size: 25px; color: var(--teal); }
.steps h3 { margin-bottom: 8px; }
.steps p { font-size: 15px; color: var(--muted); margin-bottom: 0px; }
.principles { background: var(--ink); color: white; padding: 85px max(6%, -616px + 50vw); }
.principles .eyebrow { color: rgb(114, 215, 209); }
.lead { font-size: 23px; max-width: 800px; color: rgb(204, 226, 229); margin-top: 30px; }
.principle-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; margin-top: 50px; }
.principle-grid article { border-top: 1px solid rgb(82, 113, 123); padding-top: 25px; }
.principle-grid p { font-size: 16px; color: rgb(188, 210, 216); margin-bottom: 0px; }
.about { padding: 80px 6%; max-width: 1000px; margin: auto; text-align: center; }
.about > p:not(.eyebrow) { color: var(--muted); max-width: 700px; margin-left: auto; margin-right: auto; }
.source-note { font-size: 13px; margin-top: 30px; }
footer { border-top: 1px solid var(--line); padding: 28px 6%; display: flex; justify-content: space-between; gap: 25px; font-size: 13px; color: var(--muted); }
.footer-brand { font-size: 16px; font-weight: bold; color: var(--ink); }
@media (max-width: 900px) {
  header { padding: 22px 5%; }
  nav { gap: 17px; }
  .hero { padding: 45px 5% 65px; gap: 35px; grid-template-columns: 1fr 1fr; }
  h1 { letter-spacing: -2px; }
  .hero-diagram { padding: 22px 12px; min-height: 440px; }
  .sequence { letter-spacing: 0px; font-size: 11px; }
  .cards { gap: 15px; }
  .cards article { padding: 22px; }
  .platform { gap: 6%; }
}
@media (max-width: 650px) {
  header { align-items: flex-start; gap: 24px; flex-direction: column; }
  nav { width: 100%; justify-content: space-between; gap: 12px; font-size: 13px; }
  .hero { grid-template-columns: 1fr; padding-top: 30px; }
  .hero-diagram { min-height: 430px; }
  .section-heading, .cards, .platform, .principle-grid { grid-template-columns: 1fr; }
  .research, .principles { padding: 60px 5%; }
  .section-heading { gap: 0px; }
  .section-heading .eyebrow { grid-column: auto; }
  .cards { margin-top: 20px; gap: 20px; }
  .cards article { padding: 28px; }
  .platform { padding: 60px 5%; gap: 40px; }
  .principle-grid { gap: 24px; margin-top: 35px; }
  .lead { font-size: 20px; }
  .about { padding: 60px 5%; }
  footer { flex-direction: column; gap: 10px; }
  h1 { font-size: 48px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}