:root{--k9-primary-red:#c0392b;--k9-bg-light:#f9f9f7;--k9-text-light:#2c2c2c;--k9-border:#e0e0e0}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;font-size:16px;line-height:1.5;color:var(--k9-text-light);background-color:var(--k9-bg-light)}h1,h2,h3,h4,h5,h6{font-weight:700;margin-bottom:16px}a{color:var(--k9-primary-red);text-decoration:none}a:hover{text-decoration:underline}