:root { font-family: system-ui, sans-serif; color: #172033; background: #f3f6fb; }
main { max-width: 680px; margin: 12vh auto; padding: 2.5rem; background: white; border-radius: 12px; box-shadow: 0 8px 28px #18274a1a; }
.brand { color: #526a9e; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
h1 { margin-top: 0; } article { margin-top: 2rem; padding: 1.25rem; border-left: 4px solid #4169e1; background: #f6f8ff; }