:root {
  --bg: #f2f4f8;
  --surface: #ffffff;
  --border: #dde3ec;
  --text: #0d1522;
  --muted: #4f5d73;
  --accent: #1570c4;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0a0e15;
    --surface: #121925;
    --border: #243044;
    --text: #eaf0f8;
    --muted: #9aa7bb;
    --accent: #7cc8ff;
    color-scheme: dark;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.65 system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
}

main {
  max-width: 68ch;
  margin: 0 auto;
  padding: 40px 20px 64px;
}

h1 {
  margin: 0 0 4px;
  font-size: 28px;
  line-height: 1.2;
  letter-spacing: -0.015em;
  text-wrap: balance;
}

h2 {
  margin: 36px 0 8px;
  font-size: 18px;
  line-height: 1.3;
  text-wrap: balance;
}

p,
ul {
  margin: 0 0 12px;
}

ul {
  padding-left: 20px;
}

li {
  margin-bottom: 6px;
}

a {
  color: var(--accent);
}

.meta {
  color: var(--muted);
  font-size: 14px;
  margin-bottom: 24px;
}

.summary {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px 20px;
  margin: 24px 0 8px;
}

.summary ul {
  margin: 0;
}

.lang {
  font-size: 14px;
}

h3 {
  margin: 0 0 4px;
  font-size: 16px;
  line-height: 1.35;
}

.options {
  display: grid;
  gap: 12px;
  margin: 12px 0 8px;
}

.option {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 14px 18px;
}

.option p {
  margin: 0;
  color: var(--muted);
}

.cta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}

.button {
  display: inline-block;
  padding: 11px 20px;
  border-radius: 999px;
  background: var(--accent);
  color: var(--bg);
  font-weight: 600;
  text-decoration: none;
}

.button.secondary {
  background: transparent;
  color: var(--text);
  box-shadow: inset 0 0 0 1px var(--border);
}