:root{
  --bg:#fbfcfd; --card:#ffffff; --muted:#6b6b6b; --accent:#0b6ea8; --radius:12px;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
}
.mcbp-container{padding:16px;max-width:980px;margin:0 auto;background:var(--bg);}
.mcbp-header{text-align:center;margin-bottom:14px;}
.mcbp-title{font-size:1.6rem;margin:6px 0;}
.mcbp-sub{color:var(--muted);font-size:0.95rem;margin:0 0 12px 0;}
.mcbp-calculator-card{background:var(--card);padding:18px;border-radius:var(--radius);box-shadow:0 10px 30px rgba(11,110,168,0.06);margin-bottom:16px;}
.mcbp-row{display:flex;flex-direction:column;margin-bottom:12px;position:relative;}
.mcbp-row label{font-weight:700;margin-bottom:6px;font-size:0.94rem;}
.mcbp-row input, .mcbp-row select{padding:12px;border:1px solid #e6e6e6;border-radius:10px;font-size:1rem;}
.mcbp-tooltip{position:absolute;right:8px;top:6px;width:28px;height:28px;border-radius:50%;background:#f0f4f7;display:flex;align-items:center;justify-content:center;font-weight:700;cursor:help;}
.button{background:var(--accent);color:#fff;padding:10px 14px;border-radius:10px;border:0;cursor:pointer;}
.result-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;}
.result-card{background:#fafbfc;padding:14px;border-radius:10px;border:1px solid #eef4fb;}
@media(min-width:860px){ .result-grid{grid-template-columns:repeat(3,1fr);} }