:root {
  --bg: #fbf9f4;
  --surface: #ffffff;
  --divider: #e6e1d4;
  --text: #16211f;
  --muted: #5c6763;
  --primary: #00615d;
  --coral: #f0466e;
  --display: "Chillax", "Avenir Next", "Helvetica Neue", sans-serif;
  --body: "General Sans", "Avenir Next", "Helvetica Neue", sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--body);
  font-size: 1.0625rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  padding: 0 1.5rem 6rem;
}
.wrap { max-width: 44rem; margin: 0 auto; }
header { padding: 3.5rem 0 2rem; border-bottom: 1px solid var(--divider); margin-bottom: 2.5rem; }
.back { font-size: 0.9rem; color: var(--primary); text-decoration: none; font-weight: 600; }
.back:hover { text-decoration: underline; }
h1 {
  font-family: var(--display);
  font-size: clamp(2rem, 1.2rem + 3vw, 3rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin: 1.25rem 0 0.5rem;
}
.updated { color: var(--muted); font-size: 0.9rem; }
h2 {
  font-family: var(--display);
  font-size: 1.4rem;
  letter-spacing: -0.01em;
  margin: 2.5rem 0 0.75rem;
}
h3 { font-size: 1.05rem; margin: 1.5rem 0 0.4rem; }
p { margin-bottom: 1rem; }
ul { margin: 0 0 1rem 1.25rem; }
li { margin-bottom: 0.5rem; }
strong { font-weight: 600; }
a { color: var(--primary); }
.callout {
  background: var(--surface);
  border: 1px solid var(--divider);
  border-left: 3px solid var(--primary);
  border-radius: 4px;
  padding: 1.1rem 1.25rem;
  margin: 1.5rem 0;
}
.callout.warn { border-left-color: var(--coral); }
.callout p:last-child { margin-bottom: 0; }
footer {
  margin-top: 4rem; padding-top: 1.5rem;
  border-top: 1px solid var(--divider);
  color: var(--muted); font-size: 0.9rem;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1614; --surface: #17211f; --divider: #253230;
    --text: #eef2f0; --muted: #98a5a1; --primary: #4fc3b4; --coral: #ff7b98;
  }
}