*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;line-height:1.6;color:#333;background-color:#fff}a{color:#06c;text-decoration:none}a:hover{text-decoration:underline}@media (max-width:768px){body{font-size:16px}h1{font-size:2rem;line-height:1.2}h2{font-size:1.5rem}}@keyframes fadeIn{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.animate-fade-in{animation:fadeIn .6s ease-out}details summary{cursor:pointer;-webkit-user-select:none;-moz-user-select:none;user-select:none}details summary::-webkit-details-marker{display:none}details[open] summary span:last-child{transform:rotate(45deg);transition:transform .2s}