.rr-calc-host { width: 100%; }

    .rr-calc-host .field-grid {
      display: grid;
      grid-template-columns: 1fr 1fr 1fr;
      gap: 14px;
      background: var(--ys-bg-soft);
      padding: 18px;
      border-radius: 10px;
      margin-bottom: 16px;
    }
    @media (max-width: 700px) { .rr-calc-host .field-grid { grid-template-columns: 1fr; } }

    .rr-calc-host label {
      display: block;
      font-family: var(--ys-font-display);
      text-transform: uppercase;
      letter-spacing: 0.1em;
      font-size: 0.7rem;
      color: var(--ys-navy);
      margin-bottom: 6px;
    }
    .rr-calc-host .row { display: flex; align-items: stretch; }
    .rr-calc-host input[type="number"] {
      width: 100%;
      padding: 10px 12px;
      border: 1.5px solid var(--ys-line);
      border-radius: 6px;
      font-size: 0.96rem;
      font-family: var(--ys-font-body);
      background: #fff;
      color: var(--ys-navy);
      box-sizing: border-box;
      transition: border-color 0.15s ease, box-shadow 0.15s ease;
    }
    .rr-calc-host input:focus {
      outline: none;
      border-color: var(--wf-coral);
      box-shadow: 0 0 0 3px rgba(250, 119, 60, 0.18);
    }
    .rr-calc-host .row input { border-radius: 6px 0 0 6px; }
    .rr-calc-host .row .unit {
      padding: 0 12px;
      background: var(--ys-navy); color: #fff;
      font-family: var(--ys-font-display);
      letter-spacing: 0.06em; font-size: 0.74rem;
      display: flex; align-items: center;
      border-radius: 0 6px 6px 0;
      min-width: 50px; justify-content: center;
    }
    .rr-calc-host .field-help {
      font-size: 0.78rem;
      color: var(--ys-muted);
      margin-top: 6px;
    }

    .rr-calc-host .err {
      color: #c93939;
      background: rgba(201, 57, 57, 0.08);
      border-left: 4px solid #c93939;
      padding: 10px 14px;
      margin-top: 12px;
      border-radius: 6px;
      font-size: 0.92rem;
      display: none;
    }
    .rr-calc-host .err.active { display: block; }

    /* visual split bar */
    .rr-calc-host .split-bar {
      margin-top: 18px;
      height: 28px;
      border-radius: 8px;
      overflow: hidden;
      display: flex;
      box-shadow: inset 0 1px 3px rgba(0,0,0,0.1);
    }
    .rr-calc-host .split-bar .seg-carb {
      background: var(--ys-navy);
      transition: width 0.3s ease;
    }
    .rr-calc-host .split-bar .seg-fat {
      background: var(--wf-coral);
      transition: width 0.3s ease;
    }
    .rr-calc-host .split-legend {
      display: flex; justify-content: space-between; gap: 12px;
      font-family: var(--ys-font-display);
      letter-spacing: 0.08em; text-transform: uppercase;
      font-size: 0.78rem;
      margin-top: 8px;
    }
    .rr-calc-host .split-legend .legend-carb { color: var(--ys-navy); }
    .rr-calc-host .split-legend .legend-fat { color: var(--wf-coral); }

    .rr-calc-host .results-grid {
      display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px;
      margin-top: 18px;
    }
    @media (max-width: 760px) { .rr-calc-host .results-grid { grid-template-columns: 1fr 1fr; } }
    @media (max-width: 480px) { .rr-calc-host .results-grid { grid-template-columns: 1fr; } }

    .rr-calc-host .result-tile {
      background: #fff;
      border: 1px solid var(--ys-line);
      border-radius: 10px;
      padding: 14px;
      text-align: center;
    }
    .rr-calc-host .result-tile.carb {
      border-top: 4px solid var(--ys-navy);
    }
    .rr-calc-host .result-tile.fat {
      border-top: 4px solid var(--wf-coral);
    }
    .rr-calc-host .result-label {
      display: block;
      font-family: var(--ys-font-display);
      text-transform: uppercase;
      letter-spacing: 0.12em;
      font-size: 0.68rem;
      color: var(--ys-muted);
      margin-bottom: 6px;
    }
    .rr-calc-host .result-value {
      display: block;
      font-family: var(--ys-font-display);
      font-weight: 700;
      font-size: 1.4rem;
      color: var(--ys-navy);
      letter-spacing: 0.02em;
    }
    .rr-calc-host .result-aux {
      display: block;
      font-size: 0.78rem;
      color: var(--ys-muted);
      margin-top: 4px;
    }

    .rr-calc-host .domain-tag {
      display: inline-block;
      padding: 6px 14px;
      background: var(--wf-coral);
      color: #fff;
      border-radius: 999px;
      font-family: var(--ys-font-display);
      letter-spacing: 0.1em; text-transform: uppercase;
      font-size: 0.78rem;
      font-weight: 700;
      margin-top: 8px;
    }

    .rr-calc-host .rpe-desc {
      margin-top: 14px;
      padding: 14px 16px;
      background: var(--ys-bg-soft);
      border-left: 4px solid var(--wf-coral);
      border-radius: 6px;
      color: var(--ys-navy);
      font-size: 0.95rem;
      line-height: 1.5;
    }
    .rr-calc-host .rpe-level {
      font-family: var(--ys-font-display);
      letter-spacing: 0.04em;
      color: var(--wf-coral);
      font-weight: 700;
    }