:root {
  --ink: #17231f;
  --ink-soft: #35423d;
  --paper: #f3efe5;
  --paper-bright: #fbfaf5;
  --line: #c9c4b6;
  --copper: #bd673f;
  --copper-dark: #8f4528;
  --sage: #8fa590;
  --gold: #d8b66b;
  --serif: Georgia, "Times New Roman", serif;
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  overflow-x: hidden;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
}

.skip-link {
  position: fixed;
  z-index: 20;
  top: 12px;
  left: 12px;
  padding: 10px 14px;
  color: var(--paper-bright);
  background: var(--ink);
  transform: translateY(-160%);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: absolute;
  z-index: 10;
  top: 0;
  left: 0;
  display: flex;
  width: 100%;
  max-width: 1440px;
  align-items: center;
  justify-content: space-between;
  padding: 28px clamp(24px, 5vw, 76px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  font-family: var(--serif);
  font-size: 1.45rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.brand-mark {
  width: 36px;
  height: 36px;
  fill: none;
  stroke: currentcolor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.7;
}

nav {
  display: flex;
  align-items: center;
  gap: 30px;
}

nav a {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-decoration: none;
  text-transform: uppercase;
}

nav a:not(.nav-cta):hover {
  color: var(--copper-dark);
}

.nav-cta {
  border: 1px solid var(--ink);
  padding: 9px 17px;
  transition: 160ms ease;
}

.nav-cta:hover {
  color: var(--paper-bright);
  background: var(--ink);
}

.hero {
  display: grid;
  min-height: 760px;
  grid-template-columns: minmax(0, 1.04fr) minmax(430px, 0.96fr);
  background: var(--paper-bright);
}

.hero-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 150px clamp(32px, 7vw, 110px) 90px;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 11px;
  margin: 0 0 23px;
  color: var(--copper-dark);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.eyebrow span {
  width: 28px;
  height: 1px;
  background: currentcolor;
}

h1,
h2,
h3,
p {
  text-wrap: pretty;
}

h1,
h2 {
  margin: 0;
  font-family: var(--serif);
  font-weight: 500;
  letter-spacing: -0.055em;
  line-height: 0.98;
}

h1 {
  max-width: 720px;
  font-size: clamp(4rem, 7.2vw, 7.2rem);
}

h2 {
  font-size: clamp(2.8rem, 5vw, 5rem);
}

.hero-intro {
  max-width: 640px;
  margin: 36px 0 0;
  color: var(--ink-soft);
  font-size: clamp(1rem, 1.3vw, 1.16rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 38px;
}

.button {
  display: inline-flex;
  min-height: 50px;
  align-items: center;
  justify-content: center;
  padding: 12px 22px;
  border: 1px solid var(--ink);
  font-size: 0.77rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-decoration: none;
  text-transform: uppercase;
  transition: 160ms ease;
}

.button-primary {
  color: var(--paper-bright);
  background: var(--ink);
}

.button-primary:hover {
  background: var(--copper-dark);
  border-color: var(--copper-dark);
}

.button-secondary:hover {
  background: var(--paper);
}

.status-note {
  margin: 22px 0 0;
  color: #68726d;
  font-size: 0.78rem;
  letter-spacing: 0.035em;
}

.artifact-stage {
  position: relative;
  min-height: 720px;
  overflow: hidden;
  background-color: var(--ink);
  background-image: linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 42px 42px;
  isolation: isolate;
}

.artifact-stage::before {
  position: absolute;
  top: 13%;
  left: 50%;
  width: 510px;
  height: 510px;
  border: 1px solid rgba(216, 182, 107, 0.22);
  border-radius: 50%;
  content: "";
  transform: translateX(-50%);
}

.orbit {
  position: absolute;
  top: 17%;
  left: 50%;
  border: 1px dashed rgba(216, 182, 107, 0.29);
  border-radius: 50%;
  transform: translateX(-50%);
}

.orbit-one {
  width: 430px;
  height: 430px;
}

.orbit-two {
  top: 23%;
  width: 340px;
  height: 340px;
}

.coin {
  position: absolute;
  z-index: 2;
  top: 27%;
  left: 50%;
  display: grid;
  width: 270px;
  height: 270px;
  place-items: center;
  border: 2px solid #e6c783;
  border-radius: 50%;
  background: #b96840;
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.32), inset 0 0 0 8px #9c4f2f,
    inset 0 0 0 10px #d88759;
  color: #f2d99f;
  transform: translateX(-50%);
}

.coin-rim {
  position: absolute;
  inset: 18px;
  border: 1px dotted rgba(255, 236, 185, 0.7);
  border-radius: 50%;
}

.coin-face {
  display: flex;
  flex-direction: column;
  align-items: center;
  font-family: var(--serif);
}

.coin-star {
  font-size: 1.5rem;
}

.coin-face strong {
  font-size: 5.4rem;
  font-weight: 400;
  letter-spacing: -0.08em;
  line-height: 1;
}

.coin-year {
  font-family: var(--sans);
  font-size: 0.58rem;
  font-weight: 800;
  letter-spacing: 0.24em;
}

.evidence-card {
  position: absolute;
  z-index: 3;
  display: flex;
  min-width: 235px;
  align-items: center;
  gap: 15px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  padding: 14px 17px;
  color: var(--paper-bright);
  background: rgba(23, 35, 31, 0.92);
  box-shadow: 0 16px 30px rgba(0, 0, 0, 0.2);
}

.card-top {
  top: 20%;
  right: 4%;
}

.card-bottom {
  bottom: 22%;
  left: 5%;
}

.card-index {
  color: var(--gold);
  font-family: var(--serif);
  font-size: 1.4rem;
}

.evidence-card div {
  display: flex;
  flex-direction: column;
}

.evidence-card small {
  color: var(--sage);
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.evidence-card strong {
  font-family: var(--serif);
  font-size: 1rem;
  font-weight: 400;
}

.stage-caption {
  position: absolute;
  right: 8%;
  bottom: 8%;
  left: 8%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  color: var(--sage);
  font-size: 0.58rem;
  font-weight: 800;
  letter-spacing: 0.18em;
}

.stage-caption i {
  width: 28px;
  height: 1px;
  background: rgba(143, 165, 144, 0.45);
}

.principle-band {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--paper);
}

.principle-band p {
  margin: 0;
  padding: 26px 30px;
  font-family: var(--serif);
  font-size: 1.05rem;
  text-align: center;
}

.principle-band p + p {
  border-left: 1px solid var(--line);
}

.section-shell {
  max-width: 1320px;
  margin: 0 auto;
  padding: 120px clamp(24px, 6vw, 86px);
}

.approach {
  display: grid;
  grid-template-columns: minmax(320px, 0.85fr) minmax(420px, 1.15fr);
  gap: clamp(50px, 10vw, 150px);
}

.section-heading {
  position: sticky;
  top: 80px;
  align-self: start;
}

.steps {
  margin: 0;
  padding: 0;
  list-style: none;
}

.steps li {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 20px;
  border-top: 1px solid var(--line);
  padding: 31px 0 34px;
}

.steps li:last-child {
  border-bottom: 1px solid var(--line);
}

.step-number {
  color: var(--copper-dark);
  font-family: var(--serif);
  font-size: 1.1rem;
}

.steps h3,
.scope-grid h3 {
  margin: 0 0 8px;
  font-family: var(--serif);
  font-size: 1.75rem;
  font-weight: 500;
  letter-spacing: -0.025em;
  line-height: 1.15;
}

.steps p,
.scope-grid p {
  margin: 0;
  color: var(--ink-soft);
}

.evidence-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  color: var(--paper-bright);
  background: var(--ink);
}

.evidence-visual {
  position: relative;
  display: grid;
  min-height: 610px;
  overflow: hidden;
  place-items: center;
  background-color: #22312b;
  background-image: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 24px,
    rgba(255, 255, 255, 0.028) 25px
  );
}

.banknote {
  width: min(76%, 520px);
  aspect-ratio: 1.8;
  padding: 12px;
  border: 1px solid #a9bdab;
  background: #718b77;
  box-shadow: 0 35px 70px rgba(0, 0, 0, 0.3);
  transform: rotate(-6deg);
}

.banknote-frame {
  position: relative;
  width: 100%;
  height: 100%;
  border: 2px solid rgba(234, 235, 203, 0.72);
  color: #eff0cf;
}

.banknote-frame::before,
.banknote-frame::after {
  position: absolute;
  inset: 11px;
  border: 1px dashed rgba(234, 235, 203, 0.46);
  content: "";
}

.banknote-value {
  position: absolute;
  top: 2%;
  left: 4%;
  font-family: var(--serif);
  font-size: clamp(3rem, 7vw, 6.8rem);
  line-height: 1;
}

.banknote-name {
  position: absolute;
  top: 12%;
  right: 7%;
  font-size: 0.58rem;
  font-weight: 800;
  letter-spacing: 0.3em;
}

.banknote-seal {
  position: absolute;
  top: 50%;
  left: 62%;
  display: grid;
  width: 90px;
  height: 90px;
  place-items: center;
  border: 1px solid currentcolor;
  border-radius: 50%;
  font-family: var(--serif);
  font-size: 3rem;
  transform: translate(-50%, -50%);
}

.banknote-serial {
  position: absolute;
  right: 7%;
  bottom: 10%;
  font-size: 0.62rem;
  letter-spacing: 0.2em;
}

.scan-line {
  position: absolute;
  z-index: 2;
  top: 17%;
  bottom: 17%;
  left: 50%;
  width: 1px;
  background: var(--gold);
  box-shadow: 0 0 16px rgba(216, 182, 107, 0.75);
}

.evidence-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 90px clamp(36px, 7vw, 110px);
}

.eyebrow-light {
  color: var(--gold);
}

.evidence-copy > p:not(.eyebrow) {
  max-width: 580px;
  margin: 30px 0 36px;
  color: #c4cec9;
}

.source-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.source-list li {
  display: flex;
  align-items: center;
  gap: 18px;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
  padding: 15px 0;
  font-family: var(--serif);
  font-size: 1.06rem;
}

.source-list li:last-child {
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
}

.source-list span {
  color: var(--gold);
  font-family: var(--sans);
  font-size: 0.62rem;
  font-weight: 800;
}

.pilot {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: clamp(60px, 10vw, 150px);
}

.pilot-copy > p:not(.eyebrow) {
  max-width: 530px;
  margin: 30px 0 24px;
  color: var(--ink-soft);
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-bottom: 1px solid var(--ink);
  padding-bottom: 3px;
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.09em;
  text-decoration: none;
  text-transform: uppercase;
}

.text-link:hover {
  color: var(--copper-dark);
  border-color: var(--copper-dark);
}

.scope-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-content: center;
  gap: 18px;
}

.scope-grid article {
  min-height: 280px;
  border: 1px solid var(--line);
  padding: 30px;
  background: var(--paper-bright);
}

.scope-label {
  display: inline-flex;
  margin-bottom: 70px;
  border: 1px solid currentcolor;
  padding: 5px 9px;
  font-size: 0.6rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.included {
  color: #4d765a;
}

.bounded {
  color: var(--copper-dark);
}

footer {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 30px;
  border-top: 1px solid var(--line);
  padding: 40px clamp(24px, 5vw, 76px);
  background: var(--paper-bright);
}

footer p {
  margin: 0;
  font-family: var(--serif);
  text-align: center;
}

.copyright {
  color: #68726d;
  font-family: var(--sans);
  font-size: 0.68rem;
  letter-spacing: 0.05em;
  text-align: right;
  text-transform: uppercase;
}

@media (max-width: 980px) {
  .hero {
    grid-template-columns: 1fr;
  }

  .artifact-stage {
    min-height: 650px;
  }

  .approach,
  .pilot {
    grid-template-columns: 1fr;
  }

  .section-heading {
    position: static;
  }

  .evidence-section {
    grid-template-columns: 1fr;
  }

  .evidence-visual {
    min-height: 500px;
  }
}

@media (max-width: 680px) {
  .site-header {
    padding: 21px 20px;
  }

  nav a:not(.nav-cta) {
    display: none;
  }

  .brand {
    font-size: 1.25rem;
  }

  .brand-mark {
    width: 31px;
    height: 31px;
  }

  .hero-copy {
    padding: 130px 24px 70px;
  }

  .hero-actions {
    flex-direction: column;
  }

  .hero-actions .button {
    width: 100%;
  }

  h1 {
    font-size: clamp(3.5rem, 18vw, 5rem);
  }

  .artifact-stage {
    min-height: 590px;
  }

  .artifact-stage::before {
    top: 14%;
    width: 390px;
    height: 390px;
  }

  .orbit-one {
    width: 330px;
    height: 330px;
  }

  .orbit-two {
    width: 270px;
    height: 270px;
  }

  .coin {
    top: 29%;
    width: 215px;
    height: 215px;
  }

  .coin-face strong {
    font-size: 4.2rem;
  }

  .evidence-card {
    min-width: 210px;
  }

  .card-top {
    top: 17%;
    right: 2%;
  }

  .card-bottom {
    bottom: 20%;
    left: 2%;
  }

  .stage-caption {
    gap: 6px;
  }

  .principle-band {
    grid-template-columns: 1fr;
  }

  .principle-band p + p {
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .section-shell {
    padding: 85px 24px;
  }

  .evidence-visual {
    min-height: 390px;
  }

  .evidence-copy {
    padding: 75px 24px;
  }

  .scope-grid {
    grid-template-columns: 1fr;
  }

  .scope-label {
    margin-bottom: 45px;
  }

  footer {
    grid-template-columns: 1fr;
  }

  .footer-brand,
  .copyright {
    justify-self: center;
    text-align: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}