:root {
  --ink: #1a1a1a;
  --muted: #5c5c5c;
  --line: #e6e6e6;
  --paper: #ffffff;
  --accent: #4a5c45;
  --max: 42rem;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  color-scheme: light;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 1.0625rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--ink);
}

.wrap {
  width: min(var(--max), calc(100% - 2.5rem));
  margin: 0 auto;
}

.site-header {
  padding: 2.25rem 0 1.75rem;
  border-bottom: 1px solid var(--line);
}

.site-header .wrap,
.site-footer .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
}

.wordmark {
  width: 13.5rem;
}

.nav {
  display: flex;
  gap: 1.25rem;
  font-size: 0.875rem;
  letter-spacing: 0.04em;
}

.nav a {
  color: var(--ink);
  text-decoration: none;
}

.nav a:hover,
.nav a[aria-current="page"] {
  color: var(--accent);
}

main {
  padding: 3.5rem 0 4.5rem;
}

.hero h1 {
  margin: 0 0 1rem;
  font-size: clamp(1.85rem, 4.2vw, 2.35rem);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.lede {
  margin: 0 0 1.75rem;
  color: var(--muted);
  font-size: 1.125rem;
}

.button {
  display: inline-block;
  background: var(--ink);
  color: var(--paper);
  text-decoration: none;
  padding: 0.8rem 1.25rem;
  font-size: 0.9375rem;
  font-weight: 500;
  letter-spacing: 0.02em;
}

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

.kicker {
  margin: 0 0 0.4rem;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.cta {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.7rem;
  margin: 0;
}

.cta-email {
  color: var(--muted);
  font-size: 0.9375rem;
  user-select: all;
}

section {
  padding-top: 2.75rem;
  border-top: 1px solid var(--line);
  margin-top: 2.75rem;
}

section h2 {
  margin: 0 0 0.85rem;
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

section p {
  margin: 0 0 1rem;
  color: var(--muted);
}

section p:last-child {
  margin-bottom: 0;
}

.meta {
  color: var(--muted);
  font-size: 0.9375rem;
}

.page-title {
  margin: 0 0 0.75rem;
  font-size: clamp(1.6rem, 3.5vw, 2rem);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.intro {
  margin: 0 0 2rem;
  color: var(--muted);
}

.standards h2 {
  margin: 2.25rem 0 0.75rem;
  font-size: 1.15rem;
  font-weight: 600;
}

.standards p,
.standards li {
  color: var(--muted);
}

.standards ul {
  margin: 0 0 1rem;
  padding-left: 1.2rem;
}

.standards li {
  margin-bottom: 0.55rem;
}

.standards li:last-child {
  margin-bottom: 0;
}

.closing {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
  font-style: italic;
}

.site-footer {
  padding: 1.5rem 0 2.5rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.875rem;
}

.site-footer a {
  color: var(--muted);
  text-decoration: none;
}

.site-footer a:hover {
  color: var(--accent);
}

.footer-links {
  display: flex;
  gap: 1rem;
}

@media (max-width: 640px) {
  .site-header .wrap,
  .site-footer .wrap {
    flex-direction: column;
    align-items: flex-start;
  }

  .wordmark {
    width: 11.5rem;
  }
}