:root {
  --bg: #faf8ff;
  --text: #191923;
  --muted: #5c5c6e;
  --accent: #2563eb;
  --line: rgba(25, 27, 35, 0.08);
  --max: 42rem;
  --wide: 48rem;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  font-size: 1rem;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
}
.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(1.5rem, 4vw, 2.5rem) clamp(1.25rem, 3vw, 1.75rem) 4rem;
}
.wrap.wide {
  max-width: var(--wide);
}
h1 {
  font-size: clamp(1.65rem, 4vw, 2.05rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.2;
  margin: 0 0 0.35em;
}
.lead {
  font-size: 1.08rem;
  color: var(--muted);
  margin: 0 0 1.5rem;
  line-height: 1.6;
}
.meta {
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 2rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--line);
}
h2 {
  font-size: 1.12rem;
  font-weight: 700;
  margin: 2rem 0 0.65rem;
  letter-spacing: -0.02em;
}
h3 {
  font-size: 1rem;
  font-weight: 700;
  margin: 1.5rem 0 0.5rem;
}
p,
ul,
ol {
  margin: 0 0 0.9em;
  color: var(--text);
}
ul,
ol {
  padding-left: 1.2em;
}
li {
  margin-bottom: 0.35em;
}
a {
  color: var(--accent);
  font-weight: 600;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}
a:hover {
  text-decoration-thickness: 2px;
}
.back {
  display: inline-block;
  margin-bottom: 1.5rem;
  font-size: 0.9rem;
}
.callout {
  background: rgba(37, 99, 235, 0.06);
  border: 1px solid rgba(37, 99, 235, 0.15);
  border-radius: 12px;
  padding: 1rem 1.15rem;
  margin: 1.25rem 0;
  font-size: 0.95rem;
}
.callout strong {
  color: var(--text);
}
table.compare {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
  margin: 1rem 0 1.5rem;
}
table.compare th,
table.compare td {
  border: 1px solid var(--line);
  padding: 0.55rem 0.65rem;
  text-align: left;
  vertical-align: top;
}
table.compare th {
  background: rgba(25, 27, 35, 0.04);
  font-weight: 700;
}
.guides-grid {
  display: grid;
  gap: 0.65rem;
  margin: 1.5rem 0;
}
.guides-grid a {
  display: block;
  padding: 0.75rem 1rem;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: #fff;
  text-decoration: none;
  color: var(--text);
  font-weight: 600;
}
.guides-grid a:hover {
  border-color: rgba(37, 99, 235, 0.35);
  color: var(--accent);
}
.guides-grid a span {
  display: block;
  font-weight: 400;
  font-size: 0.88rem;
  color: var(--muted);
  margin-top: 0.25rem;
}