*,:after,:before{box-sizing:border-box;margin:0;padding:0}:root{--color-primary:#2563eb;--color-success:#10b981;--color-warning:#f59e0b;--color-error:#ef4444;--color-bg:#f9fafb;--color-bg-dark:#1f2937;--color-text:#111827;--color-text-light:#6b7280;--color-border:#e5e7eb}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background-color:var(--color-bg);color:var(--color-text);line-height:1.6}h1,h2,h3,h4,h5,h6{font-weight:600;line-height:1.2}a{color:var(--color-primary);text-decoration:none}a:hover{text-decoration:underline}button{cursor:pointer;font-family:inherit}.container{max-width:1400px;margin:0 auto;padding:0 1rem}