:root {
      --page-123zdo-primary-color: #e44d26; /* Cam đỏ */
      --page-123zdo-secondary-color: #ff9800; /* Cam sáng */
      --page-123zdo-dark-background: #1a1a1a; /* Nền tối */
      --page-123zdo-light-text: #f0f0f0; /* Chữ sáng */
      --page-123zdo-gray-text: #cccccc; /* Chữ xám */
      --page-123zdo-border-color: #333333; /* Màu viền */
      --page-123zdo-accent-dark: #c23e1f; /* Cam đỏ đậm */
    }

    .page-123zdo {
      font-family: 'Arial', sans-serif;
      color: var(--page-123zdo-light-text);
      background-color: var(--page-123zdo-dark-background);
      line-height: 1.6;
    }

    /* Fixed Header Offset */
    .page-123zdo__hero-section,
    .page-123zdo__promotion-banner {
        padding-top: 10px; /* Small decorative padding, body handles main offset */
    }

    .page-123zdo__container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 20px;
    }

    .page-123zdo__section {
      padding: 40px 20px;
      text-align: center;
      margin-bottom: 20px;
      border-radius: 8px;
    }

    .page-123zdo__section-title {
      color: var(--page-123zdo-primary-color);
      font-size: 2.5em;
      margin-bottom: 20px;
      text-transform: uppercase;
    }

    .page-123zdo__section-subtitle {
      color: var(--page-123zdo-secondary-color);
      font-size: 1.2em;
      margin-bottom: 30px;
    }

    .page-123zdo__text-content {
      font-size: 1.1em;
      margin-bottom: 20px;
      color: var(--page-123zdo-gray-text);
    }

    /* Hero Section */
    .page-123zdo__hero-section {
      background-size: cover;
      background-position: center;
      min-height: 400px;
      display: flex;
      align-items: center;
      justify-content: center;
      flex-direction: column;
      text-align: center;
      position: relative;
      overflow: hidden;
      margin-bottom: 0; /* No margin-bottom for hero */
      padding-bottom: 40px;
    }

    .page-123zdo__hero-overlay {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: rgba(0, 0, 0, 0.6);
      z-index: 1;
    }

    .page-123zdo__hero-content {
      position: relative;
      z-index: 2;
      max-width: 900px;
      padding: 20px;
    }

    .page-123zdo__hero-title {
      font-size: 3em;
      color: var(--page-123zdo-light-text);
      margin-bottom: 15px;
      line-height: 1.2;
      text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.7);
    }

    .page-123zdo__hero-description {
      font-size: 1.3em;
      color: var(--page-123zdo-gray-text);
      margin-bottom: 30px;
      text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.7);
    }

    .page-123zdo__btn-primary {
      display: inline-block;
      background-color: var(--page-123zdo-primary-color);
      color: var(--page-123zdo-light-text);
      padding: 15px 30px;
      border-radius: 50px;
      text-decoration: none;
      font-weight: bold;
      font-size: 1.1em;
      transition: background-color 0.3s ease;
      cursor: pointer;
      border: none;
    }

    .page-123zdo__btn-primary:hover {
      background-color: var(--page-123zdo-accent-dark);
    }

    /* Floating Buttons */
    .page-123zdo__floating-buttons {
      position: fixed;
      bottom: 20px;
      right: 20px;
      display: flex;
      flex-direction: column;
      gap: 10px;
      z-index: 1000;
    }

    .page-123zdo__floating-button {
      background-color: var(--page-123zdo-primary-color);
      color: var(--page-123zdo-light-text);
      padding: 12px 25px;
      border-radius: 50px;
      text-align: center;
      font-weight: bold;
      font-size: 1em;
      box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
      transition: background-color 0.3s ease, transform 0.2s ease;
      cursor: pointer;
      border: none;
      width: 120px; /* Fixed width for consistency */
    }

    .page-123zdo__floating-button:hover {
      background-color: var(--page-123zdo-accent-dark);
      transform: translateY(-2px);
    }

    /* Game Categories */
    .page-123zdo__game-categories {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 25px;
      margin-top: 40px;
    }

    .page-123zdo__category-card {
      background-color: #2a2a2a;
      border-radius: 10px;
      overflow: hidden;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.4);
      transition: transform 0.3s ease;
      text-align: center;
      padding-bottom: 20px;
      border: 1px solid var(--page-123zdo-border-color);
    }

    .page-123zdo__category-card:hover {
      transform: translateY(-5px);
    }

    .page-123zdo__category-card-image {
      width: 100%;
      height: 250px;
      object-fit: cover;
      display: block;
      border-bottom: 1px solid var(--page-123zdo-border-color);
    }

    .page-123zdo__category-card-title {
      color: var(--page-123zdo-secondary-color);
      font-size: 1.5em;
      margin: 20px 0 10px;
    }

    .page-123zdo__category-card-description {
      color: var(--page-123zdo-gray-text);
      padding: 0 15px;
      font-size: 0.95em;
    }

    /* Why Choose Section */
    .page-123zdo__why-choose-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 30px;
      margin-top: 40px;
    }

    .page-123zdo__feature-item {
      background-color: #2a2a2a;
      padding: 30px;
      border-radius: 10px;
      text-align: center;
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
      border: 1px solid var(--page-123zdo-border-color);
    }

    .page-123zdo__feature-icon {
      width: 250px; /* Min size 200x200 */
      height: 250px;
      object-fit: contain;
      margin-bottom: 20px;
    }

    .page-123zdo__feature-title {
      color: var(--page-123zdo-primary-color);
      font-size: 1.6em;
      margin-bottom: 10px;
    }

    .page-123zdo__feature-description {
      color: var(--page-123zdo-gray-text);
      font-size: 1em;
    }

    /* Payment & Providers */
    .page-123zdo__payment-providers-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); /* Adjusted for smaller logos but still min 200px */
      gap: 20px;
      margin-top: 30px;
      justify-content: center;
      align-items: center;
    }

    .page-123zdo__provider-logo-wrapper {
        background-color: #2a2a2a;
        padding: 15px;
        border-radius: 8px;
        box-shadow: 0 2px 8px rgba(0,0,0,0.2);
        display: flex;
        justify-content: center;
        align-items: center;
        height: 150px; /* Ensure consistent height for logo display */
        border: 1px solid var(--page-123zdo-border-color);
    }

    .page-123zdo__provider-logo {
      max-width: 100%;
      max-height: 120px; /* Adjust to fit wrapper, maintain aspect ratio */
      object-fit: contain;
      display: block;
    }

    /* FAQ Section */
    .page-123zdo__faq-section {
      background-color: #222222;
      border-top: 5px solid var(--page-123zdo-primary-color);
    }

    .page-123zdo__faq-list {
      margin-top: 30px;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
    }

    .page-123zdo__faq-item {
      background-color: #2a2a2a;
      border: 1px solid var(--page-123zdo-border-color);
      border-radius: 8px;
      margin-bottom: 15px;
      overflow: hidden;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    }

    .page-123zdo__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 15px 20px;
      background-color: #333333;
      cursor: pointer;
      user-select: none;
      transition: background-color 0.3s ease;
    }

    .page-123zdo__faq-question:hover {
      background-color: #444444;
    }

    .page-123zdo__faq-question h3 {
      margin: 0;
      color: var(--page-123zdo-light-text);
      font-size: 1.2em;
      pointer-events: none; /* Prevent h3 from blocking click event */
    }

    .page-123zdo__faq-toggle {
      font-size: 1.8em;
      color: var(--page-123zdo-primary-color);
      font-weight: bold;
      transition: transform 0.3s ease;
      pointer-events: none; /* Prevent toggle from blocking click event */
    }

    .page-123zdo__faq-item.active .page-123zdo__faq-toggle {
      transform: rotate(45deg); /* Change + to X or similar */
    }

    .page-123zdo__faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 15px;
      opacity: 0;
      transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.3s ease;
      color: var(--page-123zdo-gray-text);
      text-align: left;
    }

    .page-123zdo__faq-item.active .page-123zdo__faq-answer {
      max-height: 2000px !important; /* Sufficiently large */
      padding: 20px 15px !important;
      opacity: 1;
    }

    /* Call to Action Section */
    .page-123zdo__cta-section {
      background-color: var(--page-123zdo-secondary-color);
      color: var(--page-123zdo-dark-background);
      padding: 60px 20px;
      margin-bottom: 0;
      border-radius: 0;
    }

    .page-123zdo__cta-title {
      color: var(--page-123zdo-dark-background);
      font-size: 2.8em;
      margin-bottom: 20px;
    }

    .page-123zdo__cta-description {
      font-size: 1.2em;
      margin-bottom: 30px;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
    }

    .page-123zdo__btn-cta {
      display: inline-block;
      background-color: var(--page-123zdo-dark-background);
      color: var(--page-123zdo-light-text);
      padding: 18px 40px;
      border-radius: 50px;
      text-decoration: none;
      font-weight: bold;
      font-size: 1.2em;
      transition: background-color 0.3s ease, color 0.3s ease;
      border: none;
      cursor: pointer;
    }

    .page-123zdo__btn-cta:hover {
      background-color: #000000;
      color: var(--page-123zdo-secondary-color);
    }

    /* Image responsive styles */
    .page-123zdo img {
      max-width: 100%;
      height: auto;
      display: block; /* Remove extra space below images */
    }

    /* Mobile Responsive */
    @media (max-width: 768px) {
      .page-123zdo__section-title {
        font-size: 2em;
      }

      .page-123zdo__hero-title {
        font-size: 2.2em;
      }

      .page-123zdo__hero-description {
        font-size: 1em;
      }

      .page-123zdo__floating-buttons {
        flex-direction: row;
        width: 100%;
        left: 0;
        right: 0;
        bottom: 0;
        border-top: 1px solid var(--page-123zdo-border-color);
        background-color: #222222;
        padding: 10px 20px;
        justify-content: space-around;
        gap: 5px;
        border-radius: 0;
      }

      .page-123zdo__floating-button {
        flex: 1;
        padding: 10px 15px;
        font-size: 0.9em;
        width: auto;
        border-radius: 8px; /* Slightly less rounded for mobile bottom bar */
        box-shadow: none;
      }

      .page-123zdo__game-categories,
      .page-123zdo__why-choose-grid,
      .page-123zdo__payment-providers-grid {
        grid-template-columns: 1fr;
        padding: 0 10px;
      }

      .page-123zdo__category-card,
      .page-123zdo__feature-item,
      .page-123zdo__provider-logo-wrapper {
        margin: 0 auto;
        width: 95%; /* Make items fill more width */
        max-width: 350px; /* Optional: limit max width on small screens */
      }

      .page-123zdo__category-card-image {
        height: 200px;
      }

      .page-123zdo__feature-icon {
        width: 200px;
        height: 200px;
      }

      .page-123zdo__faq-question h3 {
        font-size: 1em;
      }

      .page-123zdo__faq-answer {
        padding: 15px 10px !important; /* Adjust padding for mobile */
      }

      .page-123zdo__cta-title {
        font-size: 2em;
      }

      .page-123zdo__cta-description {
        font-size: 1em;
      }

      .page-123zdo__btn-cta {
        padding: 15px 30px;
        font-size: 1em;
      }

      /* Ensure all list items are responsive */
      .page-123zdo__faq-list,
      .page-123zdo__game-categories,
      .page-123zdo__why-choose-grid,
      .page-123zdo__payment-providers-grid {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        padding: 0 10px !important; /* Adjust padding to avoid double padding */
        margin-left: 0 !important;
        margin-right: 0 !important;
      }

      .page-123zdo__faq-item,
      .page-123zdo__category-card,
      .page-123zdo__feature-item,
      .page-123zdo__provider-logo-wrapper {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
        word-wrap: break-word !important;
        overflow-wrap: break-word !important;
      }

      .page-123zdo__text-content,
      .page-123zdo__category-card-description,
      .page-123zdo__feature-description {
        word-wrap: break-word !important;
        overflow-wrap: break-word !important;
      }

      .page-123zdo img {
        max-width: 100% !important;
        height: auto !important;
        box-sizing: border-box !important;
      }
    }

    @media (max-width: 480px) {
      .page-123zdo__hero-title {
        font-size: 1.8em;
      }
      .page-123zdo__section-title {
        font-size: 1.6em;
      }
      .page-123zdo__floating-buttons {
        padding: 8px 10px;
      }
      .page-123zdo__floating-button {
        font-size: 0.8em;
        padding: 8px 10px;
      }
    }