body { font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; margin: 0; background: #f4f6f9; color: #12233d; }
main { max-width: 760px; margin: 0 auto; padding: 32px 20px 64px; background: #fff; }
h1 { font-size: 26px; margin-bottom: 4px; }
h2 { font-size: 19px; margin-top: 34px; }
p, li { line-height: 1.55; font-size: 15px; }
.muted { color: #56657f; font-size: 14px; }
.brand { color: #1d5f8f; font-weight: 700; letter-spacing: .4px; }
.note { background: #eef3f8; border-radius: 12px; padding: 12px 14px; }
nav a { margin-right: 14px; }
hr { border: none; border-top: 1px solid #e1e6ee; margin: 40px 0; }
a { color: #1d4f7a; }