:root {
  color-scheme: light dark;
  --bg: #f7f7fb;
  --card: #ffffff;
  --text: #1c1c28;
  --subtext: #6b6b7b;
  --border: #e4e4ee;
  --primary: #5b5fef;
  --tint: #5055e8;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f0f14;
    --card: #1a1a22;
    --text: #ededf3;
    --subtext: #a3a3b5;
    --border: #2d2d39;
    --tint: #a3a6ff;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 24px 16px 48px;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

main {
  max-width: 640px;
  margin: 0 auto;
}

h1 {
  font-size: 26px;
  line-height: 1.25;
  margin: 8px 0 4px;
}

h2 {
  font-size: 19px;
  margin: 32px 0 8px;
}

h3 {
  font-size: 16px;
  margin: 24px 0 4px;
}

p,
li {
  color: var(--text);
}

.lead,
.muted {
  color: var(--subtext);
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px;
  margin: 20px 0;
}

.code {
  font: 600 32px/1.2 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: 6px;
  text-align: center;
  margin: 4px 0 16px;
}

.button {
  display: block;
  width: 100%;
  padding: 14px 16px;
  margin: 8px 0 0;
  border: 1px solid var(--primary);
  border-radius: 10px;
  background: var(--primary);
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
}

.button.secondary {
  background: transparent;
  color: var(--tint);
  border-color: var(--border);
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 12px 0;
  font-size: 15px;
}

th,
td {
  border-bottom: 1px solid var(--border);
  padding: 8px 8px 8px 0;
  text-align: left;
  vertical-align: top;
}

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

footer {
  margin-top: 40px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  font-size: 14px;
  color: var(--subtext);
}

footer a {
  margin-right: 14px;
}

.placeholder {
  background: rgba(255, 181, 71, 0.22);
  border-radius: 4px;
  padding: 0 4px;
}

.label {
  margin: 0 0 4px;
}

.flush-top {
  margin-top: 0;
}

.flush-bottom {
  margin-bottom: 0;
}

.note {
  margin-top: 12px;
}