:root {
  color-scheme: light;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #203d35;
  background: #f7f3eb;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 48px 24px 28px;
}

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 44px;
  background: #fff;
  border: 1px solid #ddd9cd;
  border-radius: 24px;
}

.brand {
  margin: 0 0 32px;
  font-size: 20px;
  font-weight: 700;
}

h1 {
  margin: 0 0 20px;
  font-size: clamp(32px, 6vw, 48px);
  line-height: 1.15;
  letter-spacing: -0.03em;
}

.intro {
  margin: 0;
  font-size: 21px;
  line-height: 1.6;
}

nav {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 20px;
  margin: 32px 0;
}

a {
  color: #0f5965;
  text-underline-offset: 4px;
}

a:focus-visible {
  outline: 3px solid #203d35;
  outline-offset: 5px;
}

.button {
  display: inline-block;
  padding: 16px 24px;
  border-radius: 12px;
  background: #0f5965;
  color: #fff;
  font-size: 19px;
  font-weight: 700;
  text-decoration: none;
  text-align: center;
}

.button:hover {
  background: #0c4650;
}

.help-link {
  padding: 10px 0;
  font-size: 18px;
}

aside {
  padding-top: 24px;
  border-top: 1px solid #ddd9cd;
}

h2 {
  margin: 0 0 8px;
  font-size: 20px;
}

aside p {
  margin: 0;
  font-size: 18px;
  line-height: 1.6;
}

footer {
  margin: 24px auto 0;
  text-align: center;
  font-size: 16px;
}

@media (max-width: 480px) {
  body {
    padding: 20px 16px;
  }

  main {
    padding: 28px 24px;
  }

  .button {
    width: 100%;
  }
}