.bf-calc-wrap {
    font-family: Georgia, 'Times New Roman', serif;
    max-width: 680px;
    margin: 0 auto;
  }
  .bf-calc-wrap * { box-sizing: border-box; }

  .bf-calc-box {
    background: #ffffff;
    border: 2px solid #0f1f38;
    border-radius: 10px;
    padding: 2rem;
  }
  .bf-calc-box h3 {
    font-size: 1.4rem;
    color: #0f1f38;
    margin: 0 0 .3rem;
    font-weight: 700;
  }
  .bf-calc-sub {
    font-size: .85rem;
    color: #5a5a5a;
    margin: 0 0 1.5rem;
  }

  .bf-calc-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1rem;
  }
  @media (max-width: 540px) {
    .bf-calc-grid { grid-template-columns: 1fr; }
  }

  .bf-calc-field label {
    display: block;
    font-size: .75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .07em;
    color: #5a5a5a;
    margin-bottom: .35rem;
  }
  .bf-calc-field input,
  .bf-calc-field select {
    width: 100%;
    padding: .6rem .85rem;
    border: 1px solid #ddd5c8;
    border-radius: 5px;
    font-family: Georgia, serif;
    font-size: .95rem;
    background: #faf7f2;
    color: #1c1c1c;
    outline: none;
    transition: border-color .2s;
  }
  .bf-calc-field input:focus,
  .bf-calc-field select:focus {
    border-color: #b8922a;
  }
  .bf-calc-full { grid-column: 1 / -1; }

  .bf-calc-btn {
    width: 100%;
    padding: .85rem;
    background: #0f1f38;
    color: #fff;
    border: none;
    border-radius: 6px;
    font-family: Georgia, serif;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    letter-spacing: .03em;
    transition: background .2s;
    margin-top: .5rem;
  }
  .bf-calc-btn:hover { background: #b8922a; }

  .bf-calc-result {
    display: none;
    margin-top: 1.5rem;
    padding: 1.5rem;
    background: #0f1f38;
    border-radius: 8px;
    color: #fff;
  }
  .bf-calc-result.visible { display: block; }

  .bf-result-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
    gap: 1rem;
    margin-bottom: 1.25rem;
  }
  .bf-result-item { text-align: center; }
  .bf-result-num {
    display: block;
    font-size: 1.75rem;
    font-weight: 700;
    color: #d4a843;
    font-family: Georgia, serif;
  }
  .bf-result-label {
    font-size: .75rem;
    color: rgba(255,255,255,.6);
    text-transform: uppercase;
    letter-spacing: .07em;
  }

  .bf-ineligible {
    font-size: .93rem;
    color: rgba(255,255,255,.85);
    line-height: 1.65;
  }
  .bf-ineligible strong { color: #d4a843; }

  .bf-result-disclaimer {
    font-size: .78rem;
    color: rgba(255,255,255,.5);
    border-top: 1px solid rgba(255,255,255,.15);
    padding-top: 1rem;
    margin-top: .5rem;
    line-height: 1.6;
  }
  .bf-result-disclaimer a { color: #d4a843; }