:root {
  color-scheme: light;
  --ink: #12231d;
  --muted: #52625c;
  --paper: #f4f1e9;
  --surface: #fffdf8;
  --accent: #d6ff4b;
  --line: rgba(18, 35, 29, 0.2);
  --max: 74rem;
  --radius: 1.25rem;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-synthesis: none;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-size: 1rem;
  line-height: 1.6;
}

a {
  color: inherit;
}

a:focus-visible {
  outline: 0.2rem solid var(--ink);
  outline-offset: 0.25rem;
}

.shell {
  width: min(calc(100% - 2rem), var(--max));
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.65rem 0.9rem;
  background: var(--accent);
  color: var(--ink);
  font-weight: 800;
  transform: translateY(-180%);
}

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

.site-header {
  border-bottom: 1px solid var(--line);
}

.header-layout,
.footer-layout {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  min-height: 5rem;
}

.brand {
  display: inline-flex;
  gap: 0.32rem;
  align-items: baseline;
  text-decoration: none;
  letter-spacing: -0.04em;
  font-size: 1.15rem;
}

.brand strong {
  font-weight: 850;
}

.nav-list {
  display: flex;
  gap: clamp(0.8rem, 3vw, 2rem);
  padding: 0;
  margin: 0;
  list-style: none;
}

.nav-list a {
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.3em;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(14rem, 0.55fr);
  gap: clamp(2rem, 7vw, 7rem);
  align-items: end;
  min-height: min(46rem, calc(100svh - 5rem));
  padding-block: clamp(4rem, 10vw, 8rem);
}

.eyebrow {
  margin: 0 0 1rem;
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  overflow-wrap: break-word;
}

h1,
h2,
h3 {
  margin-top: 0;
  line-height: 1.02;
  letter-spacing: -0.045em;
}

h1 {
  max-width: 13ch;
  margin-bottom: 1.5rem;
  font-size: clamp(3rem, 8vw, 7rem);
  font-weight: 750;
}

h2 {
  max-width: 15ch;
  margin-bottom: 1rem;
  font-size: clamp(2.2rem, 5vw, 4.4rem);
  font-weight: 700;
}

h3 {
  margin-bottom: 0.6rem;
  font-size: 1.6rem;
}

.lead {
  max-width: 41rem;
  color: var(--muted);
  font-size: clamp(1.1rem, 2vw, 1.35rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
  margin-top: 2rem;
}

.button {
  display: inline-flex;
  align-items: center;
  min-height: 3rem;
  padding: 0.7rem 1.1rem;
  border: 2px solid var(--ink);
  background: var(--ink);
  color: var(--surface);
  font-weight: 750;
  text-decoration: none;
}

.button:hover {
  background: transparent;
  color: var(--ink);
}

.status {
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.hero-mark {
  display: grid;
  gap: 0.75rem;
  align-self: center;
  padding: 1.4rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: 1rem 1rem 0 var(--accent);
  transform: rotate(2deg);
}

.hero-mark span {
  padding-block: 0.3rem;
  border-bottom: 1px solid var(--line);
  font-size: clamp(1.4rem, 3.4vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -0.04em;
}

.section {
  padding-block: clamp(4rem, 9vw, 8rem);
}

.section-heading {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  column-gap: 3rem;
}

.section-heading .eyebrow {
  grid-column: 1 / -1;
}

.section-heading > p:last-child {
  max-width: 30rem;
  margin-top: 0.5rem;
  color: var(--muted);
  font-size: 1.1rem;
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  padding: 0;
  margin: 3rem 0 0;
  list-style: none;
}

.steps li {
  min-height: 16rem;
  padding: 1.5rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.step-number {
  display: block;
  margin-bottom: 4rem;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.steps p {
  margin-bottom: 0;
  color: var(--muted);
}

.section-contrast {
  background: var(--ink);
  color: var(--surface);
}

.contrast-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 7vw, 7rem);
}

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

.principles li {
  display: grid;
  grid-template-columns: minmax(6rem, 0.35fr) 1fr;
  gap: 1rem;
  padding-block: 1.2rem;
  border-top: 1px solid rgba(255, 253, 248, 0.28);
}

.principles span {
  color: rgba(255, 253, 248, 0.72);
}

.next-step {
  text-align: center;
}

.next-step h2,
.next-step > p:last-child {
  margin-inline: auto;
}

.next-step > p:last-child {
  max-width: 42rem;
  color: var(--muted);
}

.site-footer {
  border-top: 1px solid var(--line);
}

.footer-layout p {
  margin: 0;
}

.error-page {
  display: grid;
  align-content: center;
  min-height: 100svh;
  padding-block: 3rem;
}

.error-page p {
  max-width: 34rem;
}

.error-page .button {
  justify-self: start;
  margin-block: 1rem 2rem;
}

@media (max-width: 48rem) {
  .header-layout {
    align-items: flex-start;
    flex-direction: column;
    padding-block: 1rem;
  }

  .nav-list {
    flex-wrap: wrap;
  }

  .hero,
  .section-heading,
  .contrast-layout {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .hero-mark {
    width: min(100%, 24rem);
    margin-right: 1rem;
  }

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

  .steps li {
    min-height: 0;
  }

  .step-number {
    margin-bottom: 2rem;
  }
}

@media (max-width: 28rem) {
  .principles li {
    grid-template-columns: 1fr;
  }

  .footer-layout {
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    padding-block: 1rem;
  }
}

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

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
  }
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --ink: #eff7f1;
    --muted: #aebdb4;
    --paper: #0c1713;
    --surface: #14251f;
    --accent: #9fc72f;
    --line: rgba(239, 247, 241, 0.22);
  }

  .section-contrast {
    background: #050a08;
  }

  .button {
    background: var(--accent);
    color: #12231d;
  }
}