:root {
  --ink: #101820;
  --night: #071018;
  --panel: #0d1922;
  --paper: #f7fafc;
  --muted: #aabac3;
  --line: #2c414d;
  --cyan: #5bd6e7;
  --teal: #57d7c0;
  --amber: #f5b85c;
  --violet: #b9a4f4;
  --red: #ff8f85;
  --max: 1240px;
  color-scheme: dark;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}
body {
  margin: 0;
  background: var(--night);
  color: var(--paper);
  font-family:
    Inter,
    ui-sans-serif,
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  line-height: 1.55;
  overflow-x: hidden;
}
a {
  color: inherit;
}
.skip-link {
  position: fixed;
  left: 16px;
  top: -80px;
  z-index: 20;
  background: var(--paper);
  color: var(--ink);
  padding: 12px 18px;
  border-radius: 8px;
}
.skip-link:focus {
  top: 16px;
}
.site-header {
  height: 84px;
  max-width: var(--max);
  margin: auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
  z-index: 10;
}
.brand {
  display: flex;
  align-items: center;
  gap: 13px;
  text-decoration: none;
  font-size: 21px;
  font-weight: 750;
  letter-spacing: -0.3px;
}
.brand img {
  filter: drop-shadow(0 10px 24px rgba(91, 214, 231, 0.14));
}
.site-header nav {
  display: flex;
  align-items: center;
  gap: 30px;
}
.site-header nav a {
  text-decoration: none;
  color: #b9c7ce;
  font-size: 14px;
  font-weight: 650;
}
.site-header nav a:hover,
.site-header nav a:focus-visible {
  color: #fff;
}
.nav-cta {
  border: 1px solid #40545f;
  border-radius: 999px;
  padding: 9px 15px;
}
.hero {
  max-width: var(--max);
  margin: auto;
  min-height: 720px;
  padding: 100px 24px 80px;
  display: grid;
  grid-template-columns: 1.04fr 0.96fr;
  align-items: center;
  gap: 56px;
}
.eyebrow,
.section-kicker {
  text-transform: uppercase;
  letter-spacing: 2.3px;
  font-size: 12px;
  font-weight: 800;
  color: var(--teal);
}
.eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
}
.eyebrow span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--teal);
  box-shadow: 0 0 20px var(--teal);
}
h1,
h2,
h3,
p {
  margin-top: 0;
}
.hero h1 {
  font-size: clamp(58px, 6.2vw, 94px);
  line-height: 0.99;
  letter-spacing: -5px;
  margin: 24px 0 30px;
  max-width: 760px;
}
.hero h1 em {
  font-style: normal;
  color: transparent;
  background: linear-gradient(
    90deg,
    var(--cyan),
    var(--violet) 54%,
    var(--red)
  );
  background-clip: text;
  -webkit-background-clip: text;
}
.hero-lede {
  font-size: 20px;
  color: #b7c5cc;
  max-width: 650px;
}
.hero-actions {
  display: flex;
  gap: 13px;
  flex-wrap: wrap;
  margin-top: 34px;
}
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  min-height: 50px;
  padding: 0 22px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 750;
  font-size: 14px;
}
.button.primary {
  background: var(--paper);
  color: var(--ink);
}
.button.primary:hover,
.button.primary:focus-visible {
  background: var(--cyan);
}
.button.secondary {
  border: 1px solid #40545f;
  color: #d7e0e4;
}
.button.secondary:hover,
.button.secondary:focus-visible {
  border-color: var(--cyan);
}
.boundary {
  font-size: 13px;
  color: #7f939e;
  max-width: 600px;
  margin: 26px 0 0;
}
.boundary strong {
  color: #b5c4cb;
}
.hero-visual {
  height: 560px;
  position: relative;
  display: grid;
  place-items: center;
}
.hero-visual:before {
  content: "";
  position: absolute;
  width: 430px;
  height: 430px;
  border-radius: 50%;
  background: radial-gradient(
    circle,
    rgba(91, 214, 231, 0.13),
    transparent 65%
  );
  filter: blur(8px);
}
.hero-mark {
  position: relative;
  width: min(390px, 72vw);
  height: auto;
  filter: drop-shadow(0 32px 52px rgba(0, 0, 0, 0.42));
  animation: float 7s ease-in-out infinite;
}
.orbit {
  position: absolute;
  border: 1px solid rgba(145, 165, 175, 0.2);
  border-radius: 50%;
}
.orbit-one {
  width: 480px;
  height: 480px;
}
.orbit-two {
  width: 560px;
  height: 560px;
  border-style: dashed;
  animation: rotate 40s linear infinite;
}
.signal {
  position: absolute;
  background: rgba(13, 25, 34, 0.9);
  border: 1px solid #344955;
  border-radius: 999px;
  padding: 9px 14px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 700;
  box-shadow: 0 14px 30px rgba(0, 0, 0, 0.22);
  backdrop-filter: blur(12px);
}
.signal i {
  width: 9px;
  height: 9px;
  border-radius: 50%;
}
.signal-goal {
  top: 76px;
  left: 4px;
}
.signal-goal i {
  background: var(--cyan);
}
.signal-observation {
  right: -12px;
  top: 190px;
}
.signal-observation i {
  background: var(--amber);
}
.signal-viability {
  bottom: 82px;
  left: 22px;
}
.signal-viability i {
  background: var(--violet);
}
.result-chip {
  position: absolute;
  right: 0;
  bottom: 112px;
  background: #29171b;
  border: 1px solid rgba(255, 143, 133, 0.55);
  border-radius: 15px;
  padding: 11px 14px;
  display: flex;
  flex-direction: column;
}
.result-chip b {
  color: var(--red);
  font-size: 11px;
  letter-spacing: 1.4px;
}
.result-chip span {
  font-size: 11px;
  color: #b6949b;
}
.section-shell {
  max-width: var(--max);
  margin: auto;
  padding: 120px 24px;
}
.problem {
  border-top: 1px solid #1d303a;
}
.split-heading {
  display: grid;
  grid-template-columns: 1fr 0.82fr;
  gap: 90px;
  align-items: start;
}
.split-heading h2,
.section-intro h2,
.evidence-panel h2,
.closing h2 {
  font-size: clamp(40px, 5vw, 66px);
  line-height: 1.05;
  letter-spacing: -3px;
}
.split-heading p,
.section-intro > p,
.evidence-panel > div > p {
  font-size: 19px;
  color: #aabac3;
}
.principle-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 70px;
}
.principle-grid article {
  min-height: 240px;
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 30px;
  background: linear-gradient(145deg, #0d1922, #0a141b);
}
.principle-grid article span {
  color: var(--cyan);
  font:
    700 12px ui-monospace,
    monospace;
}
.principle-grid h3 {
  font-size: 22px;
  margin: 45px 0 10px;
}
.principle-grid p {
  color: #8fa2ac;
  font-size: 15px;
}
.architecture {
  max-width: 1440px;
}
.section-intro {
  max-width: 780px;
  margin-bottom: 56px;
}
.architecture figure {
  margin: 0;
}
.architecture-scroll-note {
  display: none;
}
.architecture figure:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 4px;
}
.architecture figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 28px;
  box-shadow: 0 40px 90px rgba(0, 0, 0, 0.28);
}
.architecture figcaption {
  color: #718995;
  font-size: 13px;
  margin: 15px 20px;
}
.integrations {
  padding-top: 80px;
}
.integration-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 15px;
}
.integration-grid > a {
  min-height: 166px;
  display: grid;
  grid-template-columns: 68px 1fr 20px;
  gap: 20px;
  align-items: start;
  text-decoration: none;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: #0b171f;
  transition:
    transform 0.18s,
    border-color 0.18s,
    background 0.18s;
}
.integration-grid > a:hover,
.integration-grid > a:focus-visible {
  transform: translateY(-3px);
  border-color: #5c7582;
  background: #0e1d26;
}
.integration-grid h3 {
  font-size: 21px;
  margin: 4px 0 7px;
}
.integration-grid p {
  color: #8fa2ac;
  font-size: 14px;
  margin: 0;
}
.integration-grid b {
  color: #708995;
}
.integration-code {
  width: 62px;
  height: 62px;
  border: 1px solid #39505d;
  border-radius: 16px;
  display: grid;
  place-items: center;
  color: var(--cyan);
  font:
    800 13px ui-monospace,
    monospace;
  background: #10232c;
}
.evidence {
  padding-top: 90px;
}
.evidence-panel {
  border: 1px solid #36505b;
  border-radius: 30px;
  background: linear-gradient(135deg, #10232c, #121425);
  padding: 58px;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 80px;
}
.text-link {
  display: inline-block;
  margin-top: 22px;
  color: var(--teal);
  font-weight: 750;
  text-decoration: none;
}
.evidence dl {
  display: grid;
  grid-template-columns: 1fr 1fr;
  margin: 0;
  gap: 1px;
  background: #344955;
  border: 1px solid #344955;
  border-radius: 22px;
  overflow: hidden;
}
.evidence dl div {
  background: #0c1820;
  padding: 26px;
}
.evidence dt {
  font-size: 42px;
  font-weight: 800;
  color: var(--paper);
  line-height: 1;
}
.evidence dd {
  margin: 8px 0 0;
  color: #8fa2ac;
  font-size: 13px;
}
.limits {
  margin-top: 18px;
  border: 1px solid #41272c;
  border-radius: 24px;
  background: #171116;
  padding: 32px 38px;
  display: grid;
  grid-template-columns: 0.45fr 1fr;
  gap: 40px;
}
.limits h3 {
  font-size: 20px;
}
.limits ul {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px 26px;
  margin: 0;
  padding: 0;
  list-style: none;
  color: #b999a0;
  font-size: 14px;
}
.limits li:before {
  content: "×";
  color: var(--red);
  font-weight: 800;
  margin-right: 9px;
}
.closing {
  text-align: center;
  padding-top: 100px;
}
.closing > img {
  filter: drop-shadow(0 24px 42px rgba(91, 214, 231, 0.18));
  margin-bottom: 30px;
}
.closing h2 {
  max-width: 820px;
  margin: 16px auto 22px;
}
.closing > p:not(.section-kicker) {
  color: #9cafb8;
  font-size: 18px;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}
.closing .hero-actions {
  justify-content: center;
}
footer {
  max-width: var(--max);
  margin: 30px auto 0;
  padding: 34px 24px 54px;
  border-top: 1px solid #20333d;
  display: grid;
  grid-template-columns: 0.4fr 1fr auto;
  gap: 30px;
  color: #718995;
  font-size: 12px;
}
footer span {
  font-size: 16px;
  color: #e6ecef;
  font-weight: 750;
}
footer p {
  margin: 0;
}
@keyframes float {
  50% {
    transform: translateY(-12px) rotate(0.5deg);
  }
}
@keyframes rotate {
  to {
    transform: rotate(360deg);
  }
}
@media (max-width: 980px) {
  .site-header nav a:not(.nav-cta) {
    display: none;
  }
  .hero {
    grid-template-columns: 1fr;
    padding-top: 70px;
  }
  .hero-copy {
    text-align: center;
  }
  .hero-lede,
  .boundary {
    margin-left: auto;
    margin-right: auto;
  }
  .hero-actions {
    justify-content: center;
  }
  .hero-visual {
    height: 500px;
  }
  .split-heading,
  .evidence-panel {
    grid-template-columns: 1fr;
    gap: 34px;
  }
  .principle-grid {
    grid-template-columns: 1fr;
  }
  .integration-grid {
    grid-template-columns: 1fr;
  }
  .limits {
    grid-template-columns: 1fr;
  }
  footer {
    grid-template-columns: 1fr;
    text-align: center;
  }
}
@media (max-width: 620px) {
  .site-header {
    height: 72px;
  }
  .brand {
    font-size: 18px;
  }
  .nav-cta {
    font-size: 12px !important;
  }
  .hero {
    padding-top: 58px;
  }
  .hero h1 {
    font-size: 50px;
    letter-spacing: -3px;
  }
  .hero-lede {
    font-size: 17px;
  }
  .hero-visual {
    height: 390px;
  }
  .hero-mark {
    width: 280px;
  }
  .orbit-one {
    width: 330px;
    height: 330px;
  }
  .orbit-two {
    width: 380px;
    height: 380px;
  }
  .signal {
    font-size: 10px;
  }
  .signal-goal {
    left: 0;
    top: 40px;
  }
  .signal-observation {
    right: 0;
    top: 130px;
  }
  .signal-viability {
    left: 0;
    bottom: 55px;
  }
  .result-chip {
    right: 0;
    bottom: 75px;
  }
  .section-shell {
    padding: 82px 18px;
  }
  .split-heading h2,
  .section-intro h2,
  .evidence-panel h2,
  .closing h2 {
    font-size: 40px;
    letter-spacing: -2px;
  }
  .architecture {
    padding-left: 0;
    padding-right: 0;
  }
  .architecture .section-intro {
    padding: 0 18px;
  }
  .architecture-scroll-note {
    align-items: center;
    color: var(--cyan);
    display: flex;
    font-size: 12px;
    font-weight: 700;
    gap: 8px;
    letter-spacing: 0.08em;
    margin: -28px 18px 18px;
    text-transform: uppercase;
  }
  .architecture figure img {
    border-radius: 0;
    min-width: 800px;
    width: 800px;
  }
  .architecture figure {
    overflow-x: auto;
  }
  .architecture figcaption {
    padding: 0 18px;
  }
  .integration-grid > a {
    grid-template-columns: 54px 1fr 16px;
    padding: 20px;
  }
  .integration-code {
    width: 52px;
    height: 52px;
  }
  .evidence-panel {
    padding: 30px 24px;
  }
  .evidence dl {
    grid-template-columns: 1fr;
  }
  .limits {
    padding: 26px 22px;
  }
  .limits ul {
    grid-template-columns: 1fr;
  }
  footer {
    padding-left: 18px;
    padding-right: 18px;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .hero-mark,
  .orbit-two {
    animation: none;
  }
  .integration-grid > a {
    transition: none;
  }
}