:root{--primary-color:#0070f3;--secondary-color:#000;--background-color:#f5f5f5;--text-color:#333;--font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif}body,html{padding:0;margin:0;font-family:var(--font-family);background-color:var(--background-color);color:var(--text-color)}a{color:inherit;text-decoration:none}*{box-sizing:border-box}.container{min-height:100vh;display:flex;flex-direction:column}.header{width:100%;padding:20px;display:flex;justify-content:flex-end;background-color:#fff;box-shadow:0 2px 4px rgba(0,0,0,.1)}.main{flex:1 1;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:2rem}.title{margin:0 0 2rem;line-height:1.15;font-size:3rem;text-align:center}.buttons{display:flex;gap:20px;margin-top:2rem}.btn{padding:12px 24px;border-radius:5px;font-size:1.2rem;cursor:pointer;transition:opacity .2s;border:none}.btn-primary{background-color:var(--primary-color);color:#fff}.btn-secondary{background-color:var(--secondary-color);color:#fff}.btn:hover{opacity:.8}.footer{width:100%;height:100px;border-top:1px solid #eaeaea;display:flex;justify-content:center;align-items:center;background-color:#fff}.footer a{margin:0 10px;color:#666}.footer a:hover{text-decoration:underline}