:root{--primary-color: #2563EB;--secondary-color: #F97316;--background-color: #EFF6FF;--background-gradient: linear-gradient(135deg, #EFF6FF 0%, #DBEAFE 100%);--surface-color: rgba(255, 255, 255, .8);--text-color: #0F172A;--text-muted: #475569;--border-color: #CBD5E1;--transition-speed: .3s;--font-family: "Inter", sans-serif;--card-shadow: 0 4px 6px -1px rgba(0, 0, 0, .1)}:root.dark{--primary-color: #60A5FA;--background-color: #0F172A;--background-gradient: linear-gradient(135deg, #020617 0%, #1e3a8a 50%, #172554 100%);--surface-color: rgba(15, 23, 42, .6);--text-color: #F8FAFC;--text-muted: #94A3B8;--border-color: rgba(255, 255, 255, .1);--card-shadow: 0 8px 32px 0 rgba(0, 0, 0, .3)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-family);background-color:var(--background-color);background-image:var(--background-gradient);background-attachment:fixed;min-height:100vh;color:var(--text-color);transition:background-color var(--transition-speed),color var(--transition-speed);line-height:1.6}a{color:var(--primary-color);text-decoration:none}a:hover{text-decoration:underline}img{max-width:100%;height:auto}.container{max-width:1200px;margin:0 auto;padding:0 1rem}button{cursor:pointer;font-family:inherit}