:root {
  --bg: #f5f5f5;
  --card: #ffffff;
  --border: #dedede;
  --text: #0b0b0b;
  --muted: #6b6b6b;
  --accent: #ffde17;
  --logo-light: block;
  --logo-dark: none;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b0b0b;
    --card: #1c1c1c;
    --border: #2f2f2f;
    --text: #ffffff;
    --muted: #b5b5b5;
    --logo-light: none;
    --logo-dark: block;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 400 17px/1.65 'Open Sans', system-ui, sans-serif;
}

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 40px 16px 64px;
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 40px;
}

header a.home img {
  height: 56px;
  width: auto;
}

.logo-light {
  display: var(--logo-light);
}

.logo-dark {
  display: var(--logo-dark);
}

nav {
  display: flex;
  gap: 20px;
  font-size: 15px;
}

nav a,
footer a {
  color: var(--muted);
  text-decoration: none;
}

nav a:hover,
footer a:hover {
  color: var(--text);
}

h1,
h2 {
  font-family: 'Montserrat', system-ui, sans-serif;
  font-weight: 600;
  line-height: 1.2;
}

h1 {
  font-size: 36px;
  margin: 0 0 8px;
}

h2 {
  font-size: 21px;
  margin: 36px 0 8px;
}

p,
ul {
  margin: 0 0 14px;
}

li {
  margin-bottom: 6px;
}

a {
  color: var(--text);
  text-decoration-color: var(--accent);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

.muted {
  color: var(--muted);
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 20px 24px;
  margin: 20px 0;
}

.hero {
  text-align: center;
  padding: 48px 0 16px;
}

.hero img {
  width: 220px;
  max-width: 70%;
  height: auto;
}

.hero p {
  font-size: 19px;
  color: var(--muted);
  margin-top: 24px;
}

.button {
  display: inline-block;
  background: var(--accent);
  color: #0b0b0b;
  font-family: 'Montserrat', system-ui, sans-serif;
  font-weight: 500;
  padding: 12px 22px;
  border-radius: 12px;
  text-decoration: none;
}

footer {
  margin-top: 56px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  font-size: 14px;
  color: var(--muted);
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
}