:root{--background:#0b0e14;--foreground:#f3f4f6;--primary:#3182f6;--primary-hover:#1b64d6;--card-bg:#151b26;--border-color:#242f41;--text-muted:#9ca3af;--up-color:#f04452;--down-color:#3182f6}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--background);color:var(--foreground);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;min-height:100vh}main{max-width:1200px;margin:0 auto;padding:2rem 1rem}