:root {
  --bg: #fbfbfa;
  --surface: #ffffff;
  --text: #1d1d1f;
  --muted: #6e6e73;
  --border: #e5e5e7;
  --accent: #0a7c66;
  --tag-bg: #eef5f3;
  --radius: 14px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111113;
    --surface: #1c1c1f;
    --text: #f2f2f4;
    --muted: #a1a1a8;
    --border: #2e2e33;
    --accent: #3fd0b0;
    --tag-bg: #1f2e2b;
  }
}

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

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

h1, h2, h3 {
  line-height: 1.25;
  letter-spacing: -0.01em;
}

.container {
  max-width: 44rem;
  margin: 0 auto;
  padding: 0 1.25rem;
}

main.container {
  padding-top: 4rem;
}

/* Intro */

.intro h1 {
  font-size: clamp(2.2rem, 6vw, 3rem);
  margin: 0 0 0.75rem;
  letter-spacing: -0.03em;
}

.lead {
  font-size: 1.2rem;
  color: var(--muted);
  margin: 0 0 1.5rem;
}

.links,
.card-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 1rem;
  margin: 0;
}

.button {
  display: inline-block;
  padding: 0.45rem 1rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  color: var(--text);
  font-weight: 500;
  font-size: 0.95rem;
}

.button:hover {
  border-color: var(--accent);
  color: var(--accent);
  text-decoration: none;
}

/* Sections and cards */

section {
  margin-top: 4rem;
}

.section-title {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin: 0 0 1rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  margin-bottom: 1rem;
}

.card h3 {
  margin: 0 0 0.35rem;
  font-size: 1.2rem;
}

.card p {
  margin: 0 0 0.75rem;
}

.app {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 1.25rem;
  align-items: start;
}

.app-icon {
  width: 72px;
  height: 72px;
  border-radius: 22%;
  box-shadow: 0 1px 3px rgb(0 0 0 / 0.15);
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  list-style: none;
  padding: 0;
  margin: 0 0 1rem;
}

.card > .tags:last-child {
  margin-bottom: 0;
}

.tags li {
  background: var(--tag-bg);
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 500;
  padding: 0.15rem 0.6rem;
  border-radius: 999px;
}

.card-links {
  font-size: 0.95rem;
}

@media (max-width: 520px) {
  .app {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }

  .app-icon {
    width: 60px;
    height: 60px;
  }
}

/* Legal pages */

.back {
  display: inline-block;
  font-size: 0.95rem;
  margin-bottom: 2rem;
}

.prose h1 {
  font-size: 2rem;
  margin: 0 0 0.5rem;
}

.prose h2 {
  font-size: 1.25rem;
  margin: 2.25rem 0 0.5rem;
}

.prose h3 {
  font-size: 1.05rem;
  margin: 1.5rem 0 0.25rem;
}

.prose ul {
  padding-left: 1.25rem;
}

.prose li {
  margin: 0.25rem 0;
}

/* Footer */

.footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem 1.5rem;
  margin-top: 5rem;
  padding-top: 1.5rem;
  padding-bottom: 3rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.9rem;
}

.footer p {
  margin: 0;
  display: flex;
  gap: 1rem;
}