:root{--color-1: #7BD3EA;--color-2: #5E9BFF;--color-3: #E2EAF4;--color-4: #1A3B5C;--color-5: #3A6EA5;--primary-color: #5E9BFF;--secondary-color: #7BD3EA;--accent-color: #3A6EA5;--dark-color: #1A3B5C;--light-color: #E2EAF4;--spacing-xs: .25rem;--spacing-sm: .5rem;--spacing-md: 1rem;--spacing-lg: 1.5rem;--spacing-xl: 2rem;--border-radius-sm: 8px;--border-radius-md: 12px;--border-radius-lg: 16px;--shadow-sm: 0 2px 4px rgba(26, 59, 92, .1);--shadow-md: 0 4px 8px rgba(26, 59, 92, .15);--shadow-lg: 0 8px 16px rgba(26, 59, 92, .2)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Open Sans,Helvetica Neue,sans-serif;color:var(--color-4);background:var(--color-3);line-height:1.6}h1,h2,h3,h4,h5,h6{font-weight:300;line-height:1.2}a{color:var(--color-2);text-decoration:none;transition:color .3s ease}a:hover{color:var(--color-5)}button{font-family:inherit;border:none;cursor:pointer}button:disabled{opacity:.5;cursor:not-allowed}.paper-card{background:#fff;border:1px solid var(--color-3);border-radius:var(--border-radius-md);box-shadow:var(--shadow-sm);transition:all .3s ease}.paper-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}.container{max-width:1200px;margin:0 auto;padding:0 var(--spacing-md)}.btn{display:inline-block;padding:var(--spacing-sm) var(--spacing-lg);border-radius:var(--border-radius-md);font-weight:500;text-align:center;transition:all .3s ease}.btn-primary{background:var(--color-2);color:#fff}.btn-primary:hover:not(:disabled){background:var(--color-5);transform:translateY(-2px)}.btn-outline{background:transparent;border:1px solid var(--color-3);color:var(--color-4)}.btn-outline:hover:not(:disabled){border-color:var(--color-2);color:var(--color-2)}