:root {
  color-scheme: light dark;
  --bg: #f5f5f7;
  --surface: #fff;
  --text: #1d1d24;
  --muted: #676773;
  --line: #dedee7;
  --accent: #5654d6;
  --soft: #ecebff;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 17px;
  line-height: 1.65;
}
nav,
main,
footer {
  width: min(100% - 48px, 960px);
  margin: auto;
}
nav {
  padding: 28px 0;
  display: flex;
  gap: 24px;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--line);
}
nav > a {
  font-weight: 650;
  color: var(--text);
  text-decoration: none;
}
nav div {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 24px;
}
nav a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
}
main {
  padding: 56px 0 80px;
}
h1 {
  font-size: clamp(36px, 6vw, 64px);
  line-height: 1.08;
  letter-spacing: -0.035em;
  font-weight: 650;
  max-width: 14ch;
  margin: 24px 0;
}
h2 {
  font-size: 24px;
  line-height: 1.25;
  letter-spacing: -0.02em;
  margin: 0 0 14px;
}
p {
  max-width: 70ch;
  color: var(--muted);
  margin: 12px 0 24px;
}
section {
  margin-top: 48px;
  max-width: 75ch;
}
a {
  color: var(--accent);
  text-underline-offset: 4px;
}
a:hover {
  text-decoration-thickness: 2px;
}
a:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 5px;
  border-radius: 4px;
}
.button {
  display: inline-block;
  padding: 14px 24px;
  min-height: 52px;
  background: var(--accent);
  color: var(--surface);
  border-radius: 28px;
  text-decoration: none;
  font-weight: 600;
}
.hero {
  padding: 16px 0 24px;
}
.hero img {
  border-radius: 22px;
}
.hero p {
  max-width: 48ch;
  font-size: 20px;
}
.preview {
  border: 1px solid var(--line);
  padding: 16px;
  border-radius: 12px;
  font-size: 14px;
}
footer {
  padding: 28px 0 48px;
  border-top: 1px solid var(--line);
  font-size: 14px;
}
::selection {
  background: var(--soft);
  color: var(--text);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #101115;
    --surface: #1c1d24;
    --text: #f5f5f7;
    --muted: #b0b0bc;
    --line: #35363f;
    --accent: #b6aeff;
    --soft: #302b40;
  }
  .button {
    color: #191824;
  }
}
@media (max-width: 650px) {
  nav {
    align-items: flex-start;
    flex-direction: column;
    gap: 12px;
  }
  nav div {
    gap: 4px 18px;
  }
  main {
    padding-top: 28px;
  }
  h1 {
    font-size: 42px;
  }
  .hero p {
    font-size: 18px;
  }
  nav,
  main,
  footer {
    width: calc(100% - 40px);
  }
}

.account-form {
  max-width: 480px;
  display: grid;
  gap: 20px;
}
.account-form label {
  display: grid;
  gap: 8px;
}
.account-form input {
  width: 100%;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
  color: var(--text);
  font: inherit;
}
.account-form input[type="checkbox"] {
  width: 24px;
  height: 24px;
  accent-color: var(--accent);
}
.account-form button {
  cursor: pointer;
  font: inherit;
  border: none;
}
.account-form button:disabled {
  opacity: 0.55;
  cursor: wait;
}
.account-form .text-button {
  color: var(--accent);
  background: transparent;
  min-height: 44px;
  text-decoration: underline;
}
.account-form :focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 4px;
}
[hidden] {
  display: none !important;
}