:root {
  color-scheme: light dark;
  --bg: #f7f8fb;
  --card: #ffffff;
  --text: #20242c;
  --muted: #5f6673;
  --border: #d9dee8;
  --accent: #2563eb;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111318;
    --card: #191d25;
    --text: #eef2f8;
    --muted: #a9b1bf;
    --border: #323846;
    --accent: #78a8ff;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.72;
}

main {
  width: min(920px, calc(100% - 32px));
  margin: 0 auto;
  padding: 40px 0 56px;
}

article {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: clamp(24px, 5vw, 48px);
}

h1 {
  margin: 0 0 8px;
  font-size: clamp(28px, 5vw, 42px);
  line-height: 1.18;
}

h2 {
  margin: 34px 0 10px;
  font-size: 20px;
  line-height: 1.35;
}

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

ul {
  padding-left: 1.4em;
}

li {
  margin: 6px 0;
}

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

a:hover {
  text-decoration: underline;
}

.meta,
footer {
  color: var(--muted);
  font-size: 14px;
}

.notice {
  margin: 22px 0;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: color-mix(in srgb, var(--accent) 7%, transparent);
}

.support-list {
  display: grid;
  gap: 10px;
  padding: 0;
  list-style: none;
}

.support-list li {
  margin: 0;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
}