body{font-family:system-ui,-apple-system,sans-serif;margin:0;background:#f5f5f5;color:#2c3e50}nav{background:#ff4f00}nav ul{list-style:none;display:flex;justify-content:center;gap:2rem;margin:0;padding:1rem}nav a{color:#fff;text-decoration:none;font-weight:500}main{max-width:800px;margin:0 auto;padding:2rem}section{margin-bottom:3rem;text-align:center}#timer{display:flex;justify-content:center;gap:1rem;margin-top:2rem}.time-segment{background:#fff;padding:1rem 1.5rem;border-radius:8px;box-shadow:0 2px 4px #0000001a;text-align:center}.time-segment .value{font-size:2rem;font-weight:700}.time-segment .label{font-size:.75rem;margin-top:.25rem;color:#555}section ul{padding-left:1.5rem;text-align:left}