:root{--bg-main:#f3f7ff;--bg-soft:#eaf1ff;--blue-primary:#2563eb;--text-main:#0b0f1a;--text-muted:#3b4252;--border-soft:#d6e2ff}*{box-sizing:border-box}html,body{background-color:var(--bg-main);min-height:100%;color:var(--text-main);margin:0;padding:0;font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,sans-serif}a{color:var(--blue-primary);text-decoration:none}a:hover{text-decoration:underline}h1,h2,h3{color:var(--text-main)}p,li{color:var(--text-muted)}header,main,footer,section{background-color:var(--bg-main)}button,.button{background-color:var(--blue-primary);color:#fff;cursor:pointer;border:none;border-radius:6px;padding:12px 18px;font-weight:600}button:hover,.button:hover{opacity:.9}