:root {
      --page-66-vn__primary-color: #e44d26; /* Màu cam đỏ */
      --page-66-vn__secondary-color: #f7b200; /* Màu vàng cam */
      --page-66-vn__dark-bg: #1a1a1a; /* Nền tối */
      --page-66-vn__light-bg: #ffffff; /* Nền sáng */
      --page-66-vn__text-color-light: #ffffff; /* Chữ sáng */
      --page-66-vn__text-color-dark: #333333; /* Chữ tối */
      --page-66-vn__border-color: #333333; /* Màu viền */
      --page-66-vn__border-radius: 8px;
      --page-66-vn__spacing-sm: 10px;
      --page-66-vn__spacing-md: 20px;
      --page-66-vn__spacing-lg: 40px;
      --page-66-vn__button-hover-bg: #ff6600;
    }

    .page-66-vn {
      font-family: 'Arial', sans-serif;
      color: var(--page-66-vn__text-color-dark);
      line-height: 1.6;
      background-color: #f0f2f5;
    }

    .page-66-vn__section {
      padding: var(--page-66-vn__spacing-lg) var(--page-66-vn__spacing-md);
      margin-bottom: var(--page-66-vn__spacing-md);
      background-color: var(--page-66-vn__light-bg);
      border-radius: var(--page-66-vn__border-radius);
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
      text-align: center;
      box-sizing: border-box;
    }

    .page-66-vn__section--dark {
      background-color: var(--page-66-vn__dark-bg);
      color: var(--page-66-vn__text-color-light);
      padding: var(--page-66-vn__spacing-lg) var(--page-66-vn__spacing-md);
      margin-bottom: var(--page-66-vn__spacing-md);
      border-radius: var(--page-66-vn__border-radius);
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    }

    .page-66-vn__container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 var(--page-66-vn__spacing-md);
      box-sizing: border-box;
    }

    .page-66-vn__header-title {
      font-size: 2.5em;
      color: var(--page-66-vn__primary-color);
      margin-bottom: var(--page-66-vn__spacing-md);
      text-align: center;
      padding-top: var(--page-66-vn__spacing-sm); /* Small padding to offset from body padding */
    }

    .page-66-vn__subheader {
      font-size: 1.8em;
      color: var(--page-66-vn__primary-color);
      margin-top: var(--page-66-vn__spacing-lg);
      margin-bottom: var(--page-66-vn__spacing-md);
      text-align: center;
    }
    
    .page-66-vn__subheader--dark {
        color: var(--page-66-vn__secondary-color);
    }

    .page-66-vn__text {
      font-size: 1em;
      margin-bottom: var(--page-66-vn__spacing-md);
      text-align: justify;
    }

    .page-66-vn__button {
      display: inline-block;
      background-color: var(--page-66-vn__primary-color);
      color: var(--page-66-vn__text-color-light);
      padding: var(--page-66-vn__spacing-sm) var(--page-66-vn__spacing-md);
      border-radius: 50px;
      text-decoration: none;
      font-weight: bold;
      transition: background-color 0.3s ease;
      border: none;
      cursor: pointer;
      font-size: 1em;
    }

    .page-66-vn__button:hover {
      background-color: var(--page-66-vn__button-hover-bg);
    }

    .page-66-vn__promo-banner {
      background: linear-gradient(45deg, var(--page-66-vn__primary-color), var(--page-66-vn__secondary-color));
      color: var(--page-66-vn__text-color-light);
      padding: var(--page-66-vn__spacing-lg) var(--page-66-vn__spacing-md);
      border-radius: var(--page-66-vn__border-radius);
      margin-bottom: var(--page-66-vn__spacing-md);
      text-align: center;
    }

    .page-66-vn__promo-banner h2 {
      font-size: 2em;
      margin-bottom: var(--page-66-vn__spacing-sm);
      color: var(--page-66-vn__text-color-light);
    }

    .page-66-vn__promo-banner p {
      font-size: 1.2em;
      margin-bottom: var(--page-66-vn__spacing-md);
    }

    .page-66-vn__product-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: var(--page-66-vn__spacing-md);
      margin-top: var(--page-66-vn__spacing-md);
      justify-items: center;
    }

    .page-66-vn__product-card {
      background-color: var(--page-66-vn__light-bg);
      border-radius: var(--page-66-vn__border-radius);
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
      overflow: hidden;
      text-align: center;
      padding: var(--page-66-vn__spacing-md);
      transition: transform 0.3s ease;
      box-sizing: border-box;
      width: 100%;
      max-width: 350px; /* Limit card width */
    }

    .page-66-vn__product-card:hover {
      transform: translateY(-5px);
    }

    .page-66-vn__product-image-wrapper {
      width: 100%;
      max-width: 100%;
      overflow: hidden;
      border-radius: var(--page-66-vn__border-radius);
      margin-bottom: var(--page-66-vn__spacing-sm);
      box-sizing: border-box;
    }

    .page-66-vn__product-image {
      width: 100%;
      height: auto;
      display: block;
      border-radius: var(--page-66-vn__border-radius);
      max-width: 100%;
    }

    .page-66-vn__product-title {
      font-size: 1.3em;
      color: var(--page-66-vn__primary-color);
      margin-bottom: var(--page-66-vn__spacing-sm);
    }

    .page-66-vn__product-description {
      font-size: 0.9em;
      color: var(--page-66-vn__text-color-dark);
      margin-bottom: var(--page-66-vn__spacing-md);
      text-align: left;
    }

    .page-66-vn__features-list {
      list-style: none;
      padding: 0;
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: var(--page-66-vn__spacing-md);
      margin-top: var(--page-66-vn__spacing-md);
    }

    .page-66-vn__features-item {
      background-color: #fff;
      padding: var(--page-66-vn__spacing-md);
      border-radius: var(--page-66-vn__border-radius);
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
      text-align: left;
      box-sizing: border-box;
      width: 100%;
    }

    .page-66-vn__features-item h3 {
      color: var(--page-66-vn__primary-color);
      font-size: 1.2em;
      margin-bottom: var(--page-66-vn__spacing-sm);
    }

    .page-66-vn__floating-buttons {
      position: fixed;
      bottom: var(--page-66-vn__spacing-md);
      right: var(--page-66-vn__spacing-md);
      left: var(--page-66-vn__spacing-md);
      display: flex;
      justify-content: center;
      gap: var(--page-66-vn__spacing-sm);
      z-index: 1000;
      background-color: rgba(255, 255, 255, 0.9);
      padding: var(--page-66-vn__spacing-sm);
      border-radius: 50px;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    }

    .page-66-vn__floating-buttons .page-66-vn__button {
      flex: 1;
      max-width: 180px;
      text-align: center;
      padding: var(--page-66-vn__spacing-sm) var(--page-66-vn__spacing-md);
      font-size: 1.1em;
    }

    .page-66-vn__faq-section {
      background-color: var(--page-66-vn__light-bg);
      padding: var(--page-66-vn__spacing-lg) var(--page-66-vn__spacing-md);
      margin-bottom: var(--page-66-vn__spacing-md);
      border-radius: var(--page-66-vn__border-radius);
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
      text-align: center;
      box-sizing: border-box;
    }

    .page-66-vn__faq-list {
      list-style: none;
      padding: 0;
      margin-top: var(--page-66-vn__spacing-md);
    }

    .page-66-vn__faq-item {
      border: 1px solid var(--page-66-vn__border-color);
      border-radius: var(--page-66-vn__border-radius);
      margin-bottom: var(--page-66-vn__spacing-sm);
      overflow: hidden;
      background-color: #fcfcfc;
    }

    .page-66-vn__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: var(--page-66-vn__spacing-md);
      background-color: #f5f5f5;
      cursor: pointer;
      user-select: none;
      font-weight: bold;
      color: var(--page-66-vn__text-color-dark);
      border-bottom: 1px solid transparent;
      transition: background-color 0.3s ease, border-bottom-color 0.3s ease;
    }

    .page-66-vn__faq-question:hover {
      background-color: #ebebeb;
    }

    .page-66-vn__faq-item.active .page-66-vn__faq-question {
      border-bottom-color: var(--page-66-vn__border-color);
      background-color: #e0e0e0;
    }

    .page-66-vn__faq-question h3 {
      margin: 0;
      font-size: 1.1em;
      flex-grow: 1;
      text-align: left;
      color: var(--page-66-vn__primary-color);
      pointer-events: none; /* Prevent h3 from blocking click on parent div */
    }

    .page-66-vn__faq-toggle {
      font-size: 1.5em;
      line-height: 1;
      margin-left: var(--page-66-vn__spacing-sm);
      color: var(--page-66-vn__primary-color);
      pointer-events: none; /* Prevent toggle icon from blocking click on parent div */
      transition: transform 0.3s ease;
    }

    .page-66-vn__faq-item.active .page-66-vn__faq-toggle {
      transform: rotate(45deg); /* Change '+' to 'X' or similar */
    }

    .page-66-vn__faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 20px;
      opacity: 0;
      transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
      text-align: left;
      color: var(--page-66-vn__text-color-dark);
    }

    .page-66-vn__faq-item.active .page-66-vn__faq-answer {
      max-height: 2000px !important; /* Sufficiently large to contain content */
      padding: 20px 20px !important;
      opacity: 1;
    }

    /* Responsive adjustments */
    @media (max-width: 768px) {
      .page-66-vn__header-title {
        font-size: 2em;
      }

      .page-66-vn__subheader {
        font-size: 1.5em;
      }

      .page-66-vn__section,
      .page-66-vn__section--dark,
      .page-66-vn__promo-banner,
      .page-66-vn__faq-section {
        padding: var(--page-66-vn__spacing-md) var(--page-66-vn__spacing-sm);
        margin-bottom: var(--page-66-vn__spacing-sm);
      }

      .page-66-vn__container {
        padding: 0 var(--page-66-vn__spacing-sm);
      }

      .page-66-vn__product-grid {
        grid-template-columns: 1fr;
      }

      .page-66-vn__product-card {
        max-width: 100%;
        padding: var(--page-66-vn__spacing-sm);
      }

      .page-66-vn__product-image-wrapper {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        overflow: hidden !important;
      }

      .page-66-vn__product-image {
        max-width: 100% !important;
        height: auto !important;
        box-sizing: border-box !important;
      }

      .page-66-vn__features-list {
        grid-template-columns: 1fr;
        padding: 0 !important;
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
      }
      
      .page-66-vn__features-item {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
        padding: var(--page-66-vn__spacing-sm) !important;
        word-wrap: break-word !important;
        overflow-wrap: break-word !important;
        word-break: break-word !important;
      }

      .page-66-vn__features-item h3 {
        font-size: 1.1em;
      }

      .page-66-vn__floating-buttons {
        bottom: var(--page-66-vn__spacing-sm);
        right: var(--page-66-vn__spacing-sm);
        left: var(--page-66-vn__spacing-sm);
        padding: var(--page-66-vn__spacing-sm);
      }

      .page-66-vn__floating-buttons .page-66-vn__button {
        font-size: 1em;
        padding: var(--page-66-vn__spacing-sm);
      }
      
      .page-66-vn__faq-question {
        padding: var(--page-66-vn__spacing-sm);
      }
      
      .page-66-vn__faq-question h3 {
        font-size: 1em;
      }

      .page-66-vn__faq-answer {
        padding: 15px var(--page-66-vn__spacing-sm) !important;
      }
    }