*{box-sizing:border-box;margin:0;padding:0}body{background:linear-gradient(180deg,#87ceeb 0,#e0f6ff);color:#1a1a1a;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;line-height:1.6;min-height:100vh}.container{margin:0 auto;max-width:1200px;padding:0 20px}h1,h2,h3,h4,h5,h6{font-weight:600;line-height:1.2}a{color:inherit;text-decoration:none}button{border:none;cursor:pointer;font-family:inherit}