* { box-sizing: border-box; }
    body { margin:0; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif; background:#f8fafc; color:#1e293b; line-height:1.6; }
    a { color: #dc2626; }
    img { max-width:100%; height:auto; }