body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    max-width: 720px;
    margin: 2rem auto;
    padding: 0 1rem;
    color: #1a1a1a;
    line-height: 1.6;
}
h1 { border-bottom: 2px solid #2d6a4f; padding-bottom: 0.5rem; }
h2 { color: #2d6a4f; }
ul { padding-left: 1.5rem; }
li { margin-bottom: 0.4rem; }