:root {
  --bg: #f4f8fb;
  --ink: #1f3845;
  --muted: #5a6b75;
  --accent: #2d556a;
  --accent-warm: #d87850;
  --rule: #d9e3ea;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  font-size: 17px;
  line-height: 1.55;
}

main {
  max-width: 38rem;
  margin: 0 auto;
  padding: 3rem 1.5rem 4rem;
}

header {
  border-bottom: 1px solid var(--rule);
  padding-bottom: 1.5rem;
  margin-bottom: 2rem;
  text-align: center;
}

.logo {
  display: block;
  width: 160px;
  height: auto;
  margin: 0 auto .5rem;
}

h1 {
  font-size: 2.5rem;
  margin: 0 0 .25rem;
  letter-spacing: -.02em;
  color: var(--accent);
}

h2 {
  font-size: 1.25rem;
  margin-top: 2.5rem;
  margin-bottom: .5rem;
  color: var(--accent);
}

.lead {
  margin: 0;
  color: var(--muted);
  font-size: 1.1rem;
}

p, ul {
  margin-top: 0;
}

ul {
  padding-left: 1.2rem;
}

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

footer {
  margin-top: 4rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--rule);
  color: var(--muted);
  font-size: .9rem;
}

.placeholder {
  background: #fff5d6;
  border-left: 3px solid #d4a200;
  padding: .5rem .75rem;
  font-size: .9rem;
  color: #5a4500;
  margin: .5rem 0;
}