:root {
  color-scheme: dark;
  --bg: #0b0813;
  --panel: #151021;
  --line: #34273f;
  --text: #f5f0fa;
  --muted: #c2b5d0;
  --accent: #ccabff;
  --gold: #e5c28c;
  --green: #a5dfbe;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 24px;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, sans-serif;
  line-height: 1.65;
}
a {
  color: var(--accent);
  text-underline-offset: 5px;
}
button,
input,
textarea,
select {
  font: inherit;
}
button,
a.button {
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  min-height: 46px;
  padding: 11px 19px;
  border-radius: 5px;
  font-size: 0.89rem;
  font-weight: 650;
  text-decoration: none;
  border: 1px solid var(--line);
}
button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}
.primary {
  background: var(--accent);
  color: #1c102d;
  border-color: var(--accent);
}
.secondary {
  background: #1d152c;
  color: var(--text);
}
a:hover,
button:hover {
  filter: brightness(1.15);
}
:focus-visible {
  outline: 3px solid var(--gold);
  outline-offset: 4px;
}
.skip {
  position: absolute;
  top: -100px;
  left: 10px;
  background: var(--panel);
  padding: 12px;
  z-index: 5;
}
.skip:focus {
  top: 10px;
}
header {
  max-width: 1480px;
  margin: auto;
  padding: 24px 4%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border-bottom: 1px solid var(--line);
}
.brand {
  font-weight: 750;
  letter-spacing: 0.13em;
  font-size: 0.9rem;
  text-decoration: none;
  color: var(--text);
}
.brand-icon {
  color: var(--accent);
  font-size: 1.7rem;
  vertical-align: middle;
  margin-right: 8px;
}
.brand-sub {
  font-weight: 400;
  font-size: 0.66rem;
  color: var(--muted);
  letter-spacing: 0.08em;
  margin-left: 12px;
}
nav {
  display: flex;
  gap: 24px;
}
nav a {
  font-size: 0.81rem;
  text-decoration: none;
  color: var(--muted);
}
.pill {
  font-size: 0.64rem;
  letter-spacing: 0.1em;
  border: 1px solid #615070;
  border-radius: 40px;
  padding: 6px 10px;
  color: #e3d4f3;
  white-space: nowrap;
}
.hero {
  max-width: 1360px;
  margin: auto;
  min-height: 650px;
  padding: 82px 4% 76px;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  align-items: center;
  gap: 20px;
}
.eyebrow,
.step {
  font-size: 0.69rem;
  font-weight: 650;
  letter-spacing: 0.18em;
  color: var(--gold);
  display: block;
}
.eyebrow {
  margin: 0 0 20px;
}
h1 {
  font-weight: 500;
  line-height: 1.08;
  letter-spacing: -0.06em;
  font-size: clamp(2.8rem, 5.2vw, 5.6rem);
  margin: 0 0 28px;
}
h1 em {
  font-family: Georgia, serif;
  font-weight: 400;
  letter-spacing: -0.045em;
  color: var(--accent);
}
.lead {
  max-width: 570px;
  font-size: 1.05rem;
  color: var(--muted);
  line-height: 1.8;
}
.actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin: 26px 0 16px;
}
.fine {
  font-size: 0.76rem;
  color: var(--muted);
}
.orbital {
  height: 475px;
  position: relative;
  display: grid;
  place-items: center;
  background: radial-gradient(
    ellipse,
    #713bbb45 0%,
    #25133b35 38%,
    transparent 65%
  );
  overflow: hidden;
}
.orbital:before,
.orbital:after {
  content: '✦';
  position: absolute;
  color: var(--gold);
  left: 18%;
  top: 16%;
  font-size: 12px;
}
.orbital:after {
  left: 83%;
  top: 62%;
  font-size: 7px;
}
.orbit {
  position: absolute;
  border: 1px solid #80679466;
  border-radius: 50%;
  width: 75%;
  height: 75%;
  transform: rotate(-22deg) scaleY(0.54);
}
.orbit-b {
  transform: rotate(49deg) scaleY(0.55);
  width: 85%;
  height: 85%;
  border-color: #b68ae850;
}
.orbit-c {
  transform: rotate(-82deg) scaleY(0.65);
  width: 63%;
  height: 63%;
}
.nucleus {
  height: 142px;
  width: 142px;
  border-radius: 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: radial-gradient(
    circle at 35% 30%,
    #c2a2f1,
    #66418b 40%,
    #20102f 75%
  );
  box-shadow: 0 0 65px #9161c335, inset 0 0 20px #d9b3ff66;
  font: italic 4rem Georgia;
  color: #eee1ff;
}
.nucleus span {
  font: 600 0.5rem system-ui;
  letter-spacing: 0.25em;
}
.satellite {
  position: absolute;
  background: #22152c;
  border: 1px solid #6e517d;
  padding: 6px 10px;
  font-size: 0.61rem;
  letter-spacing: 0.15em;
}
.s1 {
  top: 17%;
  left: 34%;
}
.s2 {
  right: 4%;
  top: 50%;
}
.s3 {
  bottom: 22%;
  left: 5%;
}
.orbital-caption {
  position: absolute;
  bottom: 0;
  text-align: center;
  letter-spacing: 0.24em;
  font-size: 0.6rem;
  color: var(--muted);
}
.principles {
  max-width: 1250px;
  margin: 0 auto;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
}
.principles > div {
  padding: 25px 30px;
}
.principles > div + div {
  border-left: 1px solid var(--line);
}
.principles span {
  font-size: 0.61rem;
  letter-spacing: 0.14em;
  color: var(--gold);
}
.principles strong {
  display: block;
  font-weight: 500;
  font-size: 1.02rem;
  margin-top: 8px;
}
.principles p {
  font-size: 0.82rem;
  color: var(--muted);
  margin-bottom: 0;
}
.section {
  max-width: 1360px;
  margin: auto;
  padding: 92px 4% 0;
}
.section-heading {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 65px;
  align-items: end;
  margin-bottom: 35px;
}
.section-heading > p {
  color: var(--muted);
  font-size: 0.94rem;
  margin-bottom: 8px;
}
h2 {
  font-size: clamp(1.9rem, 3vw, 3rem);
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: -0.04em;
  margin: 0;
}
h3 {
  font-weight: 550;
  font-size: 1.16rem;
  line-height: 1.4;
  margin: 16px 0;
}
.panel {
  background: linear-gradient(135deg, #191125, #110d1b);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 30px;
  min-width: 0;
}
.lab-grid {
  display: grid;
  grid-template-columns: 1fr 1.25fr;
  gap: 18px;
}
label {
  display: block;
  font-size: 0.79rem;
  color: var(--muted);
  margin: 20px 0 7px;
}
input:not([type='checkbox']),
textarea,
select {
  width: 100%;
  background: #0c0912;
  border: 1px solid #625170;
  border-radius: 5px;
  color: var(--text);
  padding: 11px 12px;
  min-height: 45px;
}
input[type='checkbox'] {
  width: 18px;
  height: 18px;
  accent-color: var(--accent);
  flex-shrink: 0;
}
textarea {
  resize: vertical;
}
.check {
  display: flex;
  align-items: flex-start;
  gap: 10px;
}
.field-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 18px;
}
.panel p {
  font-size: 0.88rem;
  color: var(--muted);
}
.example {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  border-bottom: 1px solid var(--line);
  padding: 12px 0;
  font-size: 0.8rem;
  flex-wrap: wrap;
}
.example code {
  overflow-wrap: anywhere;
}
.result-heading {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}
.program-display {
  margin: 26px 0;
  padding: 28px 20px;
  background: #0d0816;
  border: 1px solid #563675;
  border-radius: 7px;
  min-height: 112px;
}
.program-display > span {
  font-size: 0.59rem;
  letter-spacing: 0.18em;
  color: var(--muted);
  display: block;
}
.program-display code {
  display: block;
  margin-top: 16px;
  font-size: 1.2rem;
  color: var(--accent);
  overflow-wrap: anywhere;
}
.metric-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}
.metric-row dt {
  font-size: 0.65rem;
  color: var(--muted);
}
.metric-row dd {
  font-size: 1.15rem;
  margin: 5px 0;
}
output {
  display: block;
  font: 0.9rem ui-monospace, monospace;
  color: var(--green);
  overflow-wrap: anywhere;
  margin: 18px 0;
  min-height: 30px;
}
#challenge {
  margin-top: 12px;
}
.work-grid {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 18px;
}
.routes {
  display: grid;
  gap: 18px;
}
.routes a {
  font-size: 0.82rem;
}
.flow-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
}
.flow-grid article {
  padding: 28px 24px;
  background: #120d1b;
}
.flow-grid article + article {
  border-left: 1px solid var(--line);
}
.flow-grid span {
  color: var(--gold);
  font-size: 0.75rem;
}
.flow-grid p {
  color: var(--muted);
  font-size: 0.83rem;
}
.feedback {
  padding: 17px;
  border: 1px solid #49305e;
  border-top: 0;
  text-align: center;
  color: var(--accent);
  font-size: 0.83rem;
}
.feedback span {
  font-size: 1.5rem;
  margin-right: 14px;
}
.architecture > p {
  text-align: center;
  font-size: 0.8rem;
}
.scale-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 45px;
}
.scale-grid h3 {
  font-size: 2.3rem;
  letter-spacing: -0.04em;
}
.scale-result {
  padding: 35px 10px;
}
.market-number {
  font-size: clamp(2.5rem, 4vw, 4rem);
  letter-spacing: -0.055em;
  margin-top: 35px;
  color: var(--accent);
  line-height: 1.1;
}
.market-number.smaller {
  font-size: 2.5rem;
  color: var(--gold);
}
.scale-result p {
  color: var(--muted);
}
.evidence-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.evidence-grid a,
.evidence-grid li {
  font-size: 0.8rem;
}
.evidence-grid ul {
  padding-left: 18px;
  line-height: 2.2;
}
.faq {
  border-bottom: 1px solid var(--line);
  padding: 22px 0;
}
.faq:first-of-type {
  margin-top: 28px;
}
summary {
  cursor: pointer;
  font-size: 0.92rem;
}
.faq p {
  color: var(--muted);
  max-width: 900px;
  font-size: 0.87rem;
}
footer {
  max-width: 1250px;
  margin: 90px auto 0;
  padding: 30px 15px;
  border-top: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
footer p,
footer > a:last-child {
  font-size: 0.68rem;
  color: var(--muted);
}
svg {
  width: 100%;
  height: auto;
}
#trajectory {
  min-height: 80px;
}
#plan-status {
  border-left: 3px solid var(--gold);
  padding-left: 12px;
}
.noscript {
  padding: 20px;
}
.error {
  color: #ffb3ad !important;
}
@media (max-width: 1000px) {
  .brand-sub {
    display: none;
  }
  header > .pill {
    display: none;
  }
  .hero {
    min-height: 580px;
  }
  .orbital {
    height: 380px;
  }
  .section-heading {
    gap: 28px;
  }
  .evidence-grid {
    grid-template-columns: 1fr 1fr;
  }
  .evidence-grid article:last-child {
    grid-column: 1/-1;
  }
  .panel {
    padding: 23px;
  }
  .flow-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .flow-grid article:nth-child(3) {
    border-left: 0;
  }
  .flow-grid article:nth-child(n + 3) {
    border-top: 1px solid var(--line);
  }
}
@media (max-width: 700px) {
  header {
    flex-wrap: wrap;
    gap: 12px;
    padding: 18px 6%;
  }
  nav {
    gap: 20px;
    width: 100%;
    justify-content: space-between;
  }
  nav a {
    font-size: 0.74rem;
  }
  .hero {
    grid-template-columns: 1fr;
    padding: 48px 6% 36px;
    gap: 5px;
  }
  h1 {
    font-size: 3.4rem;
  }
  .orbital {
    height: 310px;
  }
  .hero-copy .lead {
    font-size: 0.95rem;
  }
  .principles {
    margin: 0 6%;
    grid-template-columns: 1fr;
  }
  .principles > div {
    padding: 20px 0;
  }
  .principles > div + div {
    border-left: 0;
    border-top: 1px solid var(--line);
  }
  .section {
    padding: 64px 6% 0;
  }
  .section-heading {
    grid-template-columns: 1fr;
    gap: 12px;
    margin-bottom: 24px;
  }
  .lab-grid,
  .work-grid,
  .scale-grid,
  .evidence-grid {
    grid-template-columns: 1fr;
  }
  .evidence-grid article:last-child {
    grid-column: auto;
  }
  .field-grid {
    gap: 0 12px;
  }
  .flow-grid {
    grid-template-columns: 1fr;
  }
  .flow-grid article + article {
    border-left: 0;
    border-top: 1px solid var(--line);
  }
  .panel {
    padding: 22px;
  }
  .metric-row {
    grid-template-columns: 1fr 1fr;
  }
  .scale-result {
    padding-top: 0;
  }
  .actions > button,
  .actions > a {
    flex: 1;
  }
  .result-heading {
    align-items: flex-start;
  }
  .step {
    font-size: 0.63rem;
  }
  .pill {
    font-size: 0.58rem;
  }
  .program-display code {
    font-size: 1rem;
  }
  footer {
    margin: 60px 6% 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
  .section-heading p {
    font-size: 0.88rem;
  }
  body {
    overflow-wrap: break-word;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  * {
    animation: none !important;
    transition: none !important;
  }
}