:root {
  color-scheme: light;
  --background: #f7f6f2;
  --foreground: #2b2b2b;
  --muted: #666666;
  --accent: #2f3a45;
  --line: #d6d2c9;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "IBM Plex Sans", "Source Sans 3", Inter, "Segoe UI", sans-serif;
  background: var(--background);
  color: var(--foreground);
  line-height: 1.6;
}

.shell {
  width: min(100% - 3.5rem, 64rem);
  margin: 0 auto;
  padding: 2.5rem 0 3.5rem;
}

.site-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 4rem;
}

.logo {
  width: 5rem;
  height: 5rem;
  object-fit: contain;
}

.wordmark {
  margin: 0;
  font-size: 1.45rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  line-height: 1;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

main {
  display: grid;
  gap: 3rem;
}

.hero,
.focus,
.positioning,
.contact,
.site-footer {
  max-width: 43rem;
}

.subtitle {
  margin: 0;
  font-size: clamp(1.18rem, 2.2vw, 1.42rem);
  font-weight: 430;
  color: var(--accent);
}

.intro {
  margin: 1.1rem 0 0;
}

h2 {
  margin: 0 0 0.75rem;
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 550;
  color: var(--muted);
}

p {
  margin: 0;
  font-size: 1.02rem;
  max-width: 42ch;
}

a {
  color: var(--accent);
  text-decoration-color: rgba(47, 58, 69, 0.35);
  text-underline-offset: 0.16em;
}

.contact p + p {
  margin-top: 0.45rem;
}

.site-footer {
  margin-top: 5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}

.site-footer p {
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  color: var(--muted);
}

@media (max-width: 640px) {
  .shell {
    width: min(100% - 2rem, 64rem);
    padding: 1.5rem 0 2.25rem;
  }

  .site-header {
    gap: 0.75rem;
    margin-bottom: 2.8rem;
  }

  .logo {
    width: 3.25rem;
    height: 3.25rem;
  }

  .wordmark {
    font-size: 1.08rem;
    letter-spacing: 0.14em;
  }

  main {
    gap: 2.4rem;
  }

  p {
    max-width: 36ch;
  }
}