* {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
      font-family: "Segoe UI", Arial, sans-serif;
    }

    body {
      background: #f4f8f6;
      color: #12332a;
      padding: 40px 20px;
    }

    .form-container {
      max-width: 1150px;
      margin: auto;
      background: #ffffff;
      border-radius: 20px;
      padding: 40px;
      box-shadow: 0 18px 45px rgba(15, 70, 50, 0.12);
    }

    .form-header {
      text-align: center;
      margin-bottom: 35px;
    }

    .form-header h1 {
      color: #0f6b4a;
      font-size: 34px;
      margin-bottom: 8px;
    }

    .section {
      margin-bottom: 35px;
      padding: 28px;
      border: 1px solid #dce9e4;
      border-radius: 16px;
      background: #fbfdfc;
    }

    .section h2 {
      font-size: 22px;
      color: #083d2e;
      margin-bottom: 22px;
      border-left: 5px solid #0f6b4a;
      padding-left: 12px;
    }

    .form-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 20px;
    }

    .form-group {
      display: flex;
      flex-direction: column;
    }

    .form-group.full {
      grid-column: span 2;
    }

    label {
      font-size: 14px;
      font-weight: 600;
      margin-bottom: 8px;
      color: #263f37;
      line-height: 1.45;
    }

    select, input {
      width: 100%;
      padding: 13px 14px;
      border: 1px solid #d3e1dc;
      border-radius: 10px;
      font-size: 15px;
      background: #ffffff;
      outline: none;
    }

    input:focus {
      border-color: #0f6b4a;
      box-shadow: 0 0 0 4px rgba(15, 107, 74, 0.12);
    }

    .slider-row {
      display: flex;
      align-items: center;
      gap: 14px;
    }

    input[type="range"] {
      -webkit-appearance: none;
      appearance: none;
      flex: 1;
      width: auto;
      padding: 0;
      height: 6px;
      border: none;
      border-radius: 999px;
      background: #dce9e4;
      outline: none;
      cursor: pointer;
    }

    input[type="range"]:focus {
      box-shadow: none;
    }

    input[type="range"]::-webkit-slider-thumb {
      -webkit-appearance: none;
      appearance: none;
      width: 20px;
      height: 20px;
      border-radius: 50%;
      background: #0f6b4a;
      border: 3px solid #ffffff;
      box-shadow: 0 0 0 1px #0f6b4a, 0 4px 8px rgba(15, 70, 50, 0.25);
      cursor: pointer;
      transition: transform 0.15s ease;
    }

    input[type="range"]::-webkit-slider-thumb:hover {
      transform: scale(1.1);
    }

    input[type="range"]::-moz-range-thumb {
      width: 20px;
      height: 20px;
      border-radius: 50%;
      background: #0f6b4a;
      border: 3px solid #ffffff;
      box-shadow: 0 0 0 1px #0f6b4a, 0 4px 8px rgba(15, 70, 50, 0.25);
      cursor: pointer;
      transition: transform 0.15s ease;
    }

    input[type="range"]::-moz-range-thumb:hover {
      transform: scale(1.1);
    }

    input[type="range"]::-moz-range-track {
      background: #dce9e4;
      height: 6px;
      border-radius: 999px;
      border: none;
    }

    .slider-value {
      min-width: 52px;
      text-align: center;
      padding: 6px 8px;
      border-radius: 8px;
      background: #e8f7ef;
      color: #0f6b4a;
      font-weight: 700;
      font-size: 14px;
      flex-shrink: 0;
    }

    .question-number {
      color: #0f6b4a;
      font-weight: 800;
    }

    .alert {
      display: none;
      margin-bottom: 22px;
      padding: 14px 18px;
      border-radius: 12px;
      font-weight: 600;
    }

    .alert.success {
      display: block;
      background: #e8f7ef;
      color: #0f6b4a;
      border: 1px solid #b7e3ca;
    }

    .alert.error {
      display: block;
      background: #fff0f0;
      color: #a82424;
      border: 1px solid #f0b6b6;
    }

    .step-navigation {
      display: flex;
      align-items: center;
      gap: 14px;
      margin-top: -10px;
    }

    .step-spacer {
      flex: 1;
    }

    .nav-btn {
      border: none;
      padding: 14px 30px;
      border-radius: 12px;
      font-size: 15px;
      font-weight: 700;
      cursor: pointer;
      transition: 0.25s;
    }

    .prev-btn {
      background: #e8f0ed;
      color: #12332a;
    }

    .next-btn {
      background: #0f6b4a;
      color: #ffffff;
    }

    .nav-btn:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 18px rgba(15, 70, 50, 0.15);
    }

    /* Sustainability pillar allocation — stacked bar chart */
    .pillar-chart-wrap {
      margin-top: 16px;
    }

    .pillar-chart-bar {
      display: flex;
      width: 100%;
      height: 34px;
      border-radius: 8px;
      overflow: hidden;
      background: #eef2f0;
      border: 1px solid #d7e0dc;
    }

    .pillar-chart-segment {
      height: 100%;
      width: 0%;
      min-width: 0;
      transition: width 0.25s ease;
      display: flex;
      align-items: center;
      justify-content: center;
      overflow: hidden;
      white-space: nowrap;
    }

    .pillar-chart-segment .seg-label {
      color: #fff;
      font-size: 12px;
      font-weight: 700;
      padding: 0 4px;
      text-shadow: 0 1px 1px rgba(0, 0, 0, 0.25);
    }

    .pillar-chart-legend {
      display: flex;
      flex-wrap: wrap;
      gap: 10px 18px;
      margin-top: 10px;
    }

    .pillar-chart-legend-item {
      display: flex;
      align-items: center;
      gap: 6px;
      font-size: 13px;
      color: #333;
    }

    .pillar-chart-swatch {
      width: 12px;
      height: 12px;
      border-radius: 3px;
      flex-shrink: 0;
    }

    @media (max-width: 768px) {
      .form-container {
        padding: 25px;
      }

      .form-grid {
        grid-template-columns: 1fr;
      }

      .form-group.full {
        grid-column: span 1;
      }

      .step-navigation {
        flex-direction: column;
        align-items: stretch;
      }

      .step-spacer {
        display: none;
      }

      .nav-btn {
        width: 100%;
      }
    }