.modal {
      display: none;
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: rgba(0, 0, 0, 0.7);
      justify-content: center;
      align-items: center;
      z-index: 1000;
    }
    .modal-content {
      background: white;
      padding: 20px;
      border-radius: 10px;
      box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
      width: 95%;
      max-width: 600px;
      position: relative;
    }
    .quiz-container_q {
      text-align: center;
    }
    .quiz-title {
    font-size: 24px;
    font-weight: bold;
    color: #384b60;
    margin-bottom: 10px;
    text-align: left;
    line-height: 1.2em;
    }
    .quiz-subtitle {
    font-size: 24px;
    font-weight: bold;
    color: #384b60;
    margin-bottom: 5px;
    text-align: left;
    line-height: 1.2em;
    }
    .quiz-description {
    font-size: 16px;
    color: #5c5c5c;
    margin-bottom: 0px;
    text-align: left;
    line-height: 1.2em;
    }
    .progress-bar_q {
      width: 100%;
      height: 10px;
      background: #ddd;
      border-radius: 5px;
      margin-bottom: 20px;
      overflow: hidden;
      position: relative;
    }
    .progress_q {
      height: 100%;
      width: 0;
      background: #29ce90;
      border-radius: 5px;
      transition: width 0.5s ease-in-out;
    }
    .progress-text_q {
      position: absolute;
      top: 15px;
      left: 50%;
      transform: translateX(-50%);
      font-size: 12px;
      color: #666;
    }
    .slide_q {
      display: none;
      opacity: 0;
      transition: opacity 0.5s ease-in-out;
      min-height: 400px; 
    }
    .slide_q.active_q {
      display: block;
      opacity: 1;
    }
    .options_q {
      display: flex;
      flex-wrap: wrap;
      justify-content: space-around;
    }
    .option_q {
      cursor: pointer;
      border-radius: 10px;
      transition: transform 0.2s, background 0.2s;
      width: 45%;
      text-align: center;
      margin: 5px;
      width: 33%;
    }
    .option_q:hover {
      transform: scale(1.05);
    }
    .option_q.selected_q {
      background: #c5e9ea;
    }
    .option_q img {
      width: 100%; 
      height: auto; 
      border-radius: 10px; 
    }
    input[type="range"] {
      width: 90%;
      margin: 20px 0;
      -webkit-appearance: none;
      appearance: none;
      background: transparent;
    }
    input[type="range"]::-webkit-slider-runnable-track {
      width: 100%;
      height: 8px;
      background: #ddd;
      border-radius: 5px;
    }
    input[type="range"]::-webkit-slider-thumb {
      -webkit-appearance: none;
      appearance: none;
      width: 20px;
      height: 20px;
      background: #29ce90;
      border-radius: 50%;
      cursor: pointer;
      margin-top: -6px;
    }
    input[type="range"]::-moz-range-track {
      width: 100%;
      height: 8px;
      background: #ddd;
      border-radius: 5px;
    }
    input[type="range"]::-moz-range-thumb {
      width: 20px;
      height: 20px;
      background: #29ce90;
      border-radius: 50%;
      cursor: pointer;
    }
	.next-btn_q {
      margin: 10px;
      padding: 10px 20px;
      background: #29ce90;
      color: white;
      font-size: 20px;
      border: none;
      border-radius: 10px;
      cursor: pointer;
      transition: background 0.2s;
    }
    .next-btn_q:hover {
      background: #7eed2f;
    }
    .prev-btn_q {
      margin: 10px;
      padding: 10px 20px;
      background: #efefef;
      color: #5c5c5c;
      font-size: 20px;
      border: none;
      border-radius: 10px;
      cursor: pointer;
      transition: background 0.2s;
    }
    .prev-btn_q:hover {
      background: #7eed2f;
    }
    .privacy_q {
      font-size: 12px;
      color: #666;
      margin-top: 10px;
    }
    .timer_q {
      font-size: 14px;
      color: #29ce90;
      margin: 10px 0;
    }
    .countdown_q {
      font-weight: bold;
    }
    input[type="text"],
    input[type="tel"] {
      width: 100%;
      padding: 10px;
      margin: 10px 0;
      border: 1px solid #ddd;
      border-radius: 5px;
      font-size: 16px;
    }
    .sticky-button {
      position: fixed;
      bottom: 0px;
      left: 0;
      width: 100%;
      padding-bottom: 20px;
      cursor: pointer;
      display: flex;
      justify-content: center;
      gap: 5%;
    }
    .icon {
      width: 60px;
      height: 60px;
    }
    #ceilings-value_q,
    #area-value_q {
    font-size: 24px;
    color: #29ce90;
    font-weight: bold;
    margin: 10px 0;
    text-align: center;
    }
    .benefits-list {
     text-align: left;
     margin: 20px 0;
     font-size: 16px;
     color: #5c5c5c;
    }
    .benefits-list li {
      margin-bottom: 10px;
      list-style-type: none;
      position: relative;
      padding-left: 25px;
    }
    .benefits-list li::before {
      content: "✔️";
      position: absolute;
      left: 0;
      color: #29ce90;
    }
    .start-btn {
      background: #29ce90;
      color: white;
      font-size: 20px;
      padding: 15px 30px;
      border: none;
	  width: 100%;
	  font-weight: bold;
      border-radius: 10px;
      cursor: pointer;
      transition: background 0.2s;
    }
    .start-btn:hover {
      background: #7eed2f;
    }
	.submit-btn_q {
      background: #29ce90;
      color: white;
      font-size: 20px;
      padding: 15px 30px;
      border: none;
	  width: 100%;
	  font-weight: bold;
      border-radius: 10px;
      cursor: pointer;
      transition: background 0.2s;
    }
    .submit-btn_q:hover {
      background: #7eed2f;
    }
    .time-info {
      font-size: 14px;
      color: #5c5c5c;
      margin-top: 10px;
    }
    .subtitle {
    font-size: 16px;
    color: #5c5c5c;
    margin-bottom: 5px;
    text-align: left;
    line-height: 1.2em;
    }
    .stats-info {
      font-size: 14px;
      color: #5c5c5c;
      margin-top: 20px;
    }
    .calculation-info {
      font-size: 14px;
      color: #5c5c5c;
    }