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

    .sweat-calc-host .sys-toggle {
      display: flex; gap: 0;
      border-bottom: 1px solid var(--ys-line);
      margin-bottom: 18px;
    }
    .sweat-calc-host .btn-system {
      flex: 1; padding: 10px 14px;
      background: transparent; border: 0;
      font-family: var(--ys-font-display);
      letter-spacing: 0.12em; text-transform: uppercase;
      font-size: 0.78rem; font-weight: 600;
      color: var(--ys-muted);
      cursor: pointer;
      border-bottom: 4px solid transparent;
      transition: color 0.15s ease, border-color 0.15s ease;
    }
    .sweat-calc-host .btn-system:hover { color: var(--ys-navy); }
    .sweat-calc-host .btn-system.active {
      color: var(--ys-navy);
      border-bottom-color: var(--wf-coral);
    }

    .sweat-calc-host .input-grid {
      display: grid; grid-template-columns: 1fr 1fr; gap: 14px;
      background: var(--ys-bg-soft);
      padding: 18px;
      border-radius: 10px;
      margin-bottom: 18px;
    }
    @media (max-width: 600px) { .sweat-calc-host .input-grid { grid-template-columns: 1fr; } }

    .sweat-calc-host label {
      display: block;
      font-family: var(--ys-font-display);
      text-transform: uppercase;
      letter-spacing: 0.1em;
      font-size: 0.72rem;
      color: var(--ys-navy);
      margin-bottom: 6px;
    }
    .sweat-calc-host .combined {
      display: flex; align-items: stretch;
    }
    .sweat-calc-host .combined input {
      flex: 1; min-width: 0;
      padding: 10px 12px;
      border: 1.5px solid var(--ys-line);
      border-radius: 6px 0 0 6px;
      font-size: 1rem;
      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;
    }
    .sweat-calc-host .combined input:focus {
      outline: none;
      border-color: var(--wf-coral);
      box-shadow: 0 0 0 3px rgba(250, 119, 60, 0.18);
    }
    .sweat-calc-host .combined .unit {
      padding: 0 14px;
      background: var(--ys-navy);
      color: #fff;
      font-family: var(--ys-font-display);
      letter-spacing: 0.06em;
      font-size: 0.78rem;
      display: flex; align-items: center;
      border-radius: 0 6px 6px 0;
      white-space: nowrap;
    }

    .sweat-calc-host .results-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 12px;
      margin-top: 14px;
    }
    @media (max-width: 760px) { .sweat-calc-host .results-grid { grid-template-columns: 1fr 1fr; } }
    @media (max-width: 480px) { .sweat-calc-host .results-grid { grid-template-columns: 1fr; } }

    .sweat-calc-host .result-tile {
      background: #fff;
      border: 1px solid var(--ys-line);
      border-radius: 10px;
      padding: 14px 16px;
      text-align: center;
    }
    .sweat-calc-host .result-tile.featured {
      background: var(--ys-navy);
      border-color: var(--ys-navy);
    }
    .sweat-calc-host .result-tile.featured .result-label,
    .sweat-calc-host .result-tile.featured .result-value { color: #fff; }
    .sweat-calc-host .result-label {
      display: block;
      font-family: var(--ys-font-display);
      text-transform: uppercase;
      letter-spacing: 0.1em;
      font-size: 0.7rem;
      color: var(--ys-muted);
      margin-bottom: 6px;
      line-height: 1.3;
    }
    .sweat-calc-host .result-value {
      display: block;
      font-family: var(--ys-font-display);
      font-weight: 700;
      font-size: 1.2rem;
      color: var(--ys-navy);
      letter-spacing: 0.02em;
    }