:root { --fondo: #f4f6f8; --testo: #1d2a33; --tenue: #5b6b77; --blu: #1565c0; --scuro: #263238; }
* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; display: flex; align-items: center; justify-content: center; background: var(--fondo); color: var(--testo); font: 15px/1.45 system-ui, -apple-system, "Segoe UI", Arial, sans-serif; }
.centro { text-align: center; padding: 24px 16px; }
.marchio { margin: 0 0 8px; font-size: 40px; font-weight: 700; letter-spacing: .02em; color: var(--scuro); }
.tenue { margin: 0; color: var(--tenue); font-size: 14px; }
.pulsante { display: inline-block; margin-top: 20px; padding: 10px 22px; border-radius: 6px; background: var(--scuro); color: #fff; font-weight: 600; text-decoration: none; }
.pulsante:hover, .pulsante:focus-visible { background: var(--blu); }
@media (max-width: 600px) { .marchio { font-size: 32px; } }