:root{font-family:Segoe UI,Roboto,system-ui,-apple-system,sans-serif;background-color:#f7f9fc;color:#1b2533}body{margin:0;min-height:100vh}main{padding:24px}form{display:flex;flex-direction:column;gap:12px;max-width:360px}label{font-weight:600}input,button,select{padding:10px;border-radius:6px;border:1px solid #cfd7e3}input,select{background-color:#fff;color:#1b2533}input::placeholder{color:#94a3b8}button{cursor:pointer;border:none;background-color:#1f6feb;color:#fff;font-weight:600}.card{background:#fff;border-radius:12px;padding:24px;box-shadow:0 10px 30px -20px #0f172a66}.sales-result{margin-top:24px;white-space:pre-wrap;background:#0b1220;color:#e5ebff;padding:16px;border-radius:8px;font-family:SFMono-Regular,Consolas,Liberation Mono,Menlo,monospace}