:root {
  color-scheme: light;
  --ink: #13231e;
  --muted: #52655e;
  --paper: #f6f5ef;
  --surface: #fffef9;
  --line: #d8ddd7;
  --accent: #167257;
  --accent-dark: #0d4d3b;
  --serif: Georgia, "Times New Roman", serif;
  --sans: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  line-height: 1.6;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 82% 8%, rgb(22 114 87 / 10%), transparent 28rem),
    var(--paper);
}

a {
  color: var(--accent-dark);
  text-underline-offset: 0.2em;
}

a:focus-visible {
  outline: 3px solid rgb(22 114 87 / 35%);
  outline-offset: 4px;
  border-radius: 0.2rem;
}

.shell {
  width: min(1120px, calc(100% - 2.5rem));
  margin-inline: auto;
}

.compact-shell {
  display: grid;
  align-content: center;
  min-height: 100vh;
  max-width: 760px;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(1120px, calc(100% - 2.5rem));
  margin-inline: auto;
  padding-block: 1.5rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--ink);
  font-weight: 750;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 2.25rem;
  height: 2.25rem;
  place-items: center;
  border-radius: 0.65rem;
  background: var(--accent-dark);
  color: white;
  font-family: var(--serif);
  font-size: 1.15rem;
}

.nav-link {
  font-size: 0.92rem;
  font-weight: 650;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(18rem, 0.8fr);
  gap: clamp(3rem, 7vw, 7rem);
  align-items: center;
  padding-block: clamp(5rem, 11vw, 9rem);
}

.eyebrow,
.card-label {
  margin: 0 0 1rem;
  color: var(--accent);
  font-family: var(--mono);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1,
h2 {
  font-family: var(--serif);
  font-weight: 500;
  line-height: 1.08;
  letter-spacing: -0.035em;
}

h1 {
  max-width: 13ch;
  margin-bottom: 1.6rem;
  font-size: clamp(3rem, 7vw, 5.5rem);
}

h2 {
  margin-bottom: 1.25rem;
  font-size: clamp(2rem, 4vw, 3.2rem);
}

h3 {
  margin-bottom: 0.6rem;
  font-size: 1.05rem;
}

.lede {
  max-width: 64ch;
  margin-bottom: 2rem;
  color: var(--muted);
  font-size: clamp(1.05rem, 2vw, 1.25rem);
}

.primary-link {
  display: inline-flex;
  gap: 0.55rem;
  align-items: center;
  font-weight: 700;
}

.safety-card {
  padding: clamp(1.8rem, 4vw, 2.6rem);
  border: 1px solid var(--line);
  border-radius: 1.25rem;
  background: rgb(255 254 249 / 88%);
  box-shadow: 0 1.5rem 4rem rgb(19 35 30 / 8%);
}

.safety-card h2 {
  font-size: clamp(1.65rem, 3vw, 2.25rem);
}

.safety-card ul {
  display: grid;
  gap: 0.9rem;
  margin: 0;
  padding-left: 1.2rem;
  color: var(--muted);
}

.section {
  padding-block: clamp(4rem, 8vw, 7rem);
  border-top: 1px solid var(--line);
}

.section > h2 {
  max-width: 15ch;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  margin-top: 3.5rem;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 1rem;
  background: var(--line);
}

.feature-grid article {
  min-height: 15rem;
  padding: 1.6rem;
  background: var(--surface);
}

.feature-grid p {
  color: var(--muted);
  font-size: 0.95rem;
}

.step {
  display: block;
  margin-bottom: 3.5rem;
  color: var(--accent);
  font-family: var(--mono);
  font-size: 0.78rem;
}

.disclosure {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 7vw, 7rem);
  padding-block: clamp(4rem, 8vw, 7rem);
  border-top: 1px solid var(--line);
}

.disclosure-copy {
  color: var(--muted);
  font-size: 1.05rem;
}

code {
  font-family: var(--mono);
  font-size: 0.86em;
  overflow-wrap: anywhere;
}

.policy {
  display: grid;
  grid-template-columns: minmax(17rem, 0.72fr) minmax(0, 1.28fr);
  gap: clamp(3rem, 8vw, 8rem);
  padding-block: clamp(4rem, 9vw, 7rem);
}

.policy-heading {
  align-self: start;
  position: sticky;
  top: 2rem;
}

.policy-heading h1 {
  font-size: clamp(3rem, 6vw, 5rem);
}

.policy-date {
  margin-bottom: 1.4rem;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.78rem;
  text-transform: uppercase;
}

.policy-body section {
  padding-block: 2rem;
  border-top: 1px solid var(--line);
}

.policy-body section:first-child {
  padding-top: 0;
  border-top: 0;
}

.policy-body h2 {
  font-family: var(--sans);
  font-size: 1.1rem;
  font-weight: 750;
  letter-spacing: -0.015em;
}

.policy-body p {
  color: var(--muted);
}

.site-footer {
  display: flex;
  justify-content: space-between;
  padding-block: 2rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.86rem;
}

@media (max-width: 800px) {
  .hero,
  .disclosure,
  .policy {
    grid-template-columns: 1fr;
  }

  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .policy-heading {
    position: static;
  }
}

@media (max-width: 520px) {
  .shell,
  .site-header {
    width: min(100% - 1.5rem, 1120px);
  }

  .site-header {
    padding-block: 1rem;
  }

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

  .feature-grid article {
    min-height: auto;
  }

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

@media (prefers-reduced-motion: no-preference) {
  .primary-link span {
    transition: transform 160ms ease;
  }

  .primary-link:hover span {
    transform: translateX(0.25rem);
  }
}