:root {
      --page-dt68login-primary-color: #e44d26; /* Cam đỏ */
      --page-dt68login-secondary-color: #f7a026; /* Cam */
      --page-dt68login-accent-color: #4CAF50; /* Xanh lá */
      --page-dt68login-text-color: #333;
      --page-dt68login-light-text-color: #f8f8f8;
      --page-dt68login-bg-color: #f0f2f5;
      --page-dt68login-card-bg: #ffffff;
      --page-dt68login-border-color: #ddd;
      --page-dt68login-header-height-desktop: 80px;
      --page-dt68login-header-height-mobile: 60px;
    }

    .page-dt68login {
      font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
      line-height: 1.6;
      color: var(--page-dt68login-text-color);
      background-color: var(--page-dt68login-bg-color);
      padding-bottom: 80px; /* Space for fixed button */
    }

    .page-dt68login__container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 15px;
      box-sizing: border-box;
    }

    .page-dt68login__hero-section {
      position: relative;
      width: 100%;
      overflow: hidden;
      background-color: #2c3e50; /* Dark background for contrast */
      padding-top: var(--page-dt68login-header-height-desktop); /* For fixed header */
      text-align: center;
      padding-bottom: 40px;
    }

    .page-dt68login__hero-image {
      width: 100%;
      height: auto;
      display: block;
      max-width: 100%;
      object-fit: cover;
      filter: brightness(0.7); /* Slightly dim the image for text readability */
    }

    .page-dt68login__hero-content {
      position: absolute;
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%);
      width: 90%;
      max-width: 800px;
      color: var(--page-dt68login-light-text-color);
      z-index: 1;
      text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.7);
    }

    .page-dt68login__hero-title {
      font-size: 3em;
      margin-bottom: 15px;
      color: #fff;
      font-weight: bold;
    }

    .page-dt68login__hero-description {
      font-size: 1.3em;
      margin-bottom: 30px;
      color: #eee;
    }

    .page-dt68login__button {
      display: inline-block;
      background-color: var(--page-dt68login-primary-color);
      color: var(--page-dt68login-light-text-color);
      padding: 15px 30px;
      border-radius: 8px;
      text-decoration: none;
      font-weight: bold;
      font-size: 1.1em;
      transition: background-color 0.3s ease, transform 0.2s ease;
      border: none;
      cursor: pointer;
    }

    .page-dt68login__button:hover {
      background-color: #c23b18;
      transform: translateY(-2px);
    }

    .page-dt68login__section {
      padding: 40px 0;
      background-color: var(--page-dt68login-card-bg);
      margin-bottom: 20px;
      border-radius: 8px;
      box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    }

    .page-dt68login__section--dark {
      background-color: #2c3e50;
      color: var(--page-dt68login-light-text-color);
    }

    .page-dt68login__section-title {
      font-size: 2.2em;
      color: var(--page-dt68login-primary-color);
      text-align: center;
      margin-bottom: 30px;
      font-weight: bold;
    }

    .page-dt68login__section--dark .page-dt68login__section-title {
      color: var(--page-dt68login-secondary-color);
    }

    .page-dt68login__text-block {
      margin-bottom: 20px;
      font-size: 1.1em;
    }

    .page-dt68login__features-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 20px;
      margin-top: 30px;
    }

    .page-dt68login__feature-item {
      background-color: var(--page-dt68login-card-bg);
      padding: 25px;
      border-radius: 8px;
      box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
      text-align: center;
      transition: transform 0.3s ease;
      box-sizing: border-box;
    }

    .page-dt68login__feature-item:hover {
      transform: translateY(-5px);
    }

    .page-dt68login__feature-icon {
      width: 100px;
      height: 100px;
      margin-bottom: 15px;
      object-fit: contain;
    }

    .page-dt68login__feature-title {
      font-size: 1.5em;
      color: var(--page-dt68login-primary-color);
      margin-bottom: 10px;
      font-weight: bold;
    }

    .page-dt68login__steps-list {
      list-style: none;
      padding: 0;
      margin: 0;
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 25px;
    }

    .page-dt68login__step-item {
      background-color: var(--page-dt68login-card-bg);
      padding: 25px;
      border-left: 5px solid var(--page-dt68login-primary-color);
      border-radius: 8px;
      box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
      box-sizing: border-box;
    }

    .page-dt68login__step-number {
      font-size: 2.5em;
      color: var(--page-dt68login-secondary-color);
      font-weight: bold;
      margin-bottom: 10px;
    }

    .page-dt68login__step-title {
      font-size: 1.6em;
      color: var(--page-dt68login-primary-color);
      margin-bottom: 10px;
      font-weight: bold;
    }

    .page-dt68login__step-description {
      font-size: 1em;
      color: #555;
    }

    .page-dt68login__game-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
      gap: 20px;
      margin-top: 30px;
    }

    .page-dt68login__game-card {
      background-color: var(--page-dt68login-card-bg);
      border-radius: 8px;
      overflow: hidden;
      box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
      transition: transform 0.3s ease;
      box-sizing: border-box;
    }

    .page-dt68login__game-card:hover {
      transform: translateY(-5px);
    }

    .page-dt68login__game-image {
      width: 100%;
      height: 200px;
      object-fit: cover;
      display: block;
    }

    .page-dt68login__game-content {
      padding: 15px;
      text-align: center;
    }

    .page-dt68login__game-title {
      font-size: 1.3em;
      color: var(--page-dt68login-primary-color);
      margin-bottom: 10px;
      font-weight: bold;
    }

    .page-dt68login__game-description {
      font-size: 0.95em;
      color: #666;
    }

    .page-dt68login__promo-banner {
      background-color: var(--page-dt68login-accent-color);
      color: var(--page-dt68login-light-text-color);
      padding: 30px 20px;
      text-align: center;
      border-radius: 8px;
      margin: 30px 0;
      box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    }

    .page-dt68login__promo-title {
      font-size: 2.5em;
      margin-bottom: 10px;
      font-weight: bold;
      color: #fff;
    }

    .page-dt68login__promo-text {
      font-size: 1.3em;
      margin-bottom: 20px;
      color: #eee;
    }

    .page-dt68login__faq-section {
      padding: 40px 0;
      background-color: var(--page-dt68login-card-bg);
      margin-bottom: 20px;
      border-radius: 8px;
      box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    }

    .page-dt68login__faq-title {
      font-size: 2.2em;
      color: var(--page-dt68login-primary-color);
      text-align: center;
      margin-bottom: 30px;
      font-weight: bold;
    }

    .page-dt68login__faq-list {
      max-width: 800px;
      margin: 0 auto;
    }

    .page-dt68login__faq-item {
      border: 1px solid var(--page-dt68login-border-color);
      border-radius: 8px;
      margin-bottom: 15px;
      overflow: hidden;
      background-color: #fff;
      box-sizing: border-box;
    }

    .page-dt68login__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 15px 20px;
      background-color: #f9f9f9;
      cursor: pointer;
      font-size: 1.2em;
      color: var(--page-dt68login-text-color);
      font-weight: bold;
      transition: background-color 0.3s ease;
      user-select: none;
    }

    .page-dt68login__faq-question h3 {
      margin: 0;
      font-size: 1.2em;
      color: var(--page-dt68login-text-color);
      pointer-events: none; /* Prevent h3 from interfering with click event */
      flex-grow: 1;
    }

    .page-dt68login__faq-question:hover {
      background-color: #f0f0f0;
    }

    .page-dt68login__faq-toggle {
      font-size: 1.5em;
      font-weight: bold;
      color: var(--page-dt68login-primary-color);
      margin-left: 15px;
      pointer-events: none; /* Prevent toggle icon from interfering with click event */
    }

    .page-dt68login__faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 20px;
      transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
      opacity: 0;
      color: #555;
      font-size: 1em;
      box-sizing: border-box;
    }

    .page-dt68login__faq-item.active .page-dt68login__faq-answer {
      max-height: 2000px !important; /* Sufficiently large to contain content */
      padding: 20px !important;
      opacity: 1;
    }

    .page-dt68login__floating-button {
      position: fixed;
      bottom: 20px;
      right: 20px;
      background-color: var(--page-dt68login-accent-color);
      color: var(--page-dt68login-light-text-color);
      padding: 15px 25px;
      border-radius: 50px;
      text-decoration: none;
      font-weight: bold;
      font-size: 1.1em;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
      z-index: 1000;
      transition: background-color 0.3s ease, transform 0.2s ease;
      display: flex;
      align-items: center;
      justify-content: center;
      white-space: nowrap;
      border: none;
      cursor: pointer;
    }

    .page-dt68login__floating-button:hover {
      background-color: #3e8e41;
      transform: translateY(-3px);
    }

    .page-dt68login__floating-button span {
      margin-right: 8px;
      font-size: 1.2em;
    }

    /* Responsive Design */
    @media (max-width: 768px) {
      .page-dt68login__hero-section {
        padding-top: var(--page-dt68login-header-height-mobile); /* For fixed header on mobile */
        padding-bottom: 20px;
      }

      .page-dt68login__hero-content {
        width: 95%;
        padding: 0 10px;
      }

      .page-dt68login__hero-title {
        font-size: 2.2em;
      }

      .page-dt68login__hero-description {
        font-size: 1em;
        margin-bottom: 20px;
      }

      .page-dt68login__button {
        padding: 12px 25px;
        font-size: 1em;
      }

      .page-dt68login__section-title {
        font-size: 1.8em;
        margin-bottom: 20px;
      }

      .page-dt68login__text-block {
        font-size: 1em;
      }

      .page-dt68login__features-grid,
      .page-dt68login__steps-list,
      .page-dt68login__game-grid {
        grid-template-columns: 1fr !important;
        gap: 15px !important;
      }

      .page-dt68login__feature-item,
      .page-dt68login__step-item,
      .page-dt68login__game-card {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
        padding: 20px !important;
      }

      .page-dt68login__steps-list,
      .page-dt68login__game-grid {
        padding: 0 !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
      }

      .page-dt68login__promo-title {
        font-size: 1.8em;
      }

      .page-dt68login__promo-text {
        font-size: 1.1em;
      }

      .page-dt68login__faq-title {
        font-size: 1.8em;
      }

      .page-dt68login__faq-question {
        font-size: 1em;
        padding: 12px 15px;
      }

      .page-dt68login__faq-question h3 {
        font-size: 1em;
        word-wrap: break-word !important;
        overflow-wrap: break-word !important;
        word-break: break-word !important;
      }

      .page-dt68login__faq-answer {
        padding: 0 15px;
      }

      .page-dt68login__faq-item.active .page-dt68login__faq-answer {
        padding: 15px !important;
      }

      .page-dt68login__floating-button {
        padding: 12px 20px;
        font-size: 0.95em;
        bottom: 15px;
        right: 15px;
      }
    }