.fuel-calc-host { width: 100%; }
    .fuel-calc-host label {
      display: block;
      font-family: var(--ys-font-display);
      text-transform: uppercase;
      letter-spacing: 0.12em;
      font-size: 0.74rem;
      color: var(--ys-navy);
      margin: 6px 0 6px;
    }
    .fuel-calc-host input,
    .fuel-calc-host select {
      width: 100%;
      padding: 11px 14px;
      margin: 0 0 14px;
      border: 1.5px solid var(--ys-line);
      border-radius: 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;
    }
    .fuel-calc-host input:focus,
    .fuel-calc-host select:focus {
      outline: none;
      border-color: var(--wf-coral);
      box-shadow: 0 0 0 3px rgba(250, 119, 60, 0.18);
    }

    .fuel-calc-host .fuel-results {
      margin-top: 18px;
      padding: 20px 22px;
      border-radius: 12px;
      background: var(--ys-bg-soft);
      border: 1px solid var(--ys-line);
    }
    .fuel-calc-host .fuel-results h3 {
      margin: 0 0 14px;
      font-family: var(--ys-font-display);
      letter-spacing: 0.04em;
      color: var(--ys-navy);
      font-size: 1rem;
    }
    .fuel-calc-host .fuel-headline {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 14px;
      margin-bottom: 18px;
    }
    @media (max-width: 600px) { .fuel-calc-host .fuel-headline { grid-template-columns: 1fr; } }
    .fuel-calc-host .fuel-stat {
      background: #fff;
      border: 1px solid var(--ys-line);
      border-radius: 10px;
      padding: 12px 14px;
    }
    .fuel-calc-host .fuel-stat-label {
      font-family: var(--ys-font-display);
      text-transform: uppercase;
      letter-spacing: 0.12em;
      font-size: 0.7rem;
      color: var(--ys-muted);
      display: block;
      margin-bottom: 4px;
    }
    .fuel-calc-host .fuel-stat-value {
      font-family: var(--ys-font-display);
      color: var(--ys-navy);
      font-weight: 700;
      font-size: 1.25rem;
      letter-spacing: 0.02em;
    }
    .fuel-calc-host .fuel-stat-value small {
      display: block;
      font-size: 0.78rem;
      font-weight: 500;
      color: var(--ys-muted);
      margin-top: 2px;
      letter-spacing: 0;
      text-transform: none;
    }

    .fuel-calc-host .fuel-options-title {
      font-family: var(--ys-font-display);
      text-transform: uppercase;
      letter-spacing: 0.14em;
      font-size: 0.78rem;
      color: var(--wf-coral);
      margin: 4px 0 10px;
    }
    .fuel-calc-host .fuel-options {
      list-style: none;
      padding: 0;
      margin: 0;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 8px;
    }
    @media (max-width: 600px) { .fuel-calc-host .fuel-options { grid-template-columns: 1fr; } }
    .fuel-calc-host .fuel-options li {
      background: #fff;
      border: 1px solid var(--ys-line);
      border-radius: 8px;
      padding: 10px 12px;
      font-size: 0.95rem;
      color: var(--ys-navy);
    }
    .fuel-calc-host .fuel-options li strong { color: var(--wf-coral); font-weight: 700; }

    .fuel-calc-host .fuel-diy {
      margin-top: 16px;
      padding-top: 14px;
      border-top: 1px solid var(--ys-line);
    }
    .fuel-calc-host .fuel-diy-row {
      display: flex; flex-wrap: wrap; gap: 6px;
      align-items: baseline;
      margin: 6px 0;
      font-size: 0.95rem;
    }
    .fuel-calc-host .fuel-diy-label {
      font-family: var(--ys-font-display);
      letter-spacing: 0.04em;
      color: var(--ys-navy);
      font-weight: 600;
    }
    .fuel-calc-host .fuel-diy-value { color: var(--ys-navy); }

    .fuel-calc-host .fuel-notes {
      margin-top: 18px;
      padding: 16px 18px;
      border-radius: 10px;
      background: rgba(250, 119, 60, 0.08);
      border-left: 4px solid var(--wf-coral);
      font-size: 0.92rem;
      color: var(--ys-navy);
      line-height: 1.55;
    }
    .fuel-calc-host .fuel-notes strong {
      display: block;
      font-family: var(--ys-font-display);
      text-transform: uppercase;
      letter-spacing: 0.12em;
      font-size: 0.74rem;
      color: var(--wf-coral);
      margin-bottom: 8px;
    }
    .fuel-calc-host .fuel-notes ul { margin: 0; padding-left: 20px; }
    .fuel-calc-host .fuel-notes li { margin: 4px 0; }