:root{--brand:#0f766e;--ink:#1f2937;--muted:#6b7280;--bg:#f3f8f7}
*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--ink);background:var(--bg);line-height:1.55}
header,footer{background:var(--brand);color:#fff;padding:14px 20px}header a,footer a{color:#fff;text-decoration:none;font-weight:700}
main{max-width:760px;margin:0 auto;padding:24px 20px}h1{font-size:1.9rem;margin:.4em 0}
.card{background:#fff;border-radius:14px;padding:20px;margin:18px 0;box-shadow:0 1px 3px rgba(0,0,0,.06)}
label{display:block;font-weight:600;margin-top:12px}input,select{width:100%;padding:10px;border:1px solid #cfd8d6;border-radius:8px;font-size:1rem;margin-top:4px}
.result{background:#e6f2f0;border-left:5px solid var(--brand);padding:14px;border-radius:8px;margin-top:16px}
.cta{display:inline-block;background:var(--brand);color:#fff;padding:12px 18px;border-radius:10px;text-decoration:none;font-weight:700;margin-top:8px}
.small{color:var(--muted);font-size:.9rem}table{width:100%;border-collapse:collapse}td,th{padding:6px;border-bottom:1px solid #e5ecea;text-align:left}
ul.tools li{margin:8px 0}
footer.small,footer .small{color:#e6f2f0}