:root {
      --page-hj88-primary-color: #007bff; /* Xanh dương */
      --page-hj88-secondary-color: #6c757d; /* Xám */
      --page-hj88-accent-color: #ffc107; /* Vàng */
      --page-hj88-background-light: #f8f9fa; /* Trắng nhạt */
      --page-hj88-background-dark: #343a40; /* Đen xám */
      --page-hj88-text-color-dark: #212529; /* Đen đậm */
      --page-hj88-text-color-light: #ffffff; /* Trắng */
      --page-hj88-border-color: #dee2e6; /* Xám viền */
      --page-hj88-shadow: rgba(0, 0, 0, 0.1);
      --page-hj88-transition-speed: 0.3s;
    }

    .page-hj88 {
      font-family: 'Arial', sans-serif;
      line-height: 1.6;
      color: var(--page-hj88-text-color-dark);
      background-color: var(--page-hj88-background-light);
      padding: 0;
      margin: 0;
      overflow-x: hidden;
    }

    .page-hj88__container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 20px;
    }

    /* Hero Section */
    .page-hj88__hero-section {
      position: relative;
      width: 100%;
      min-height: 450px; /* Adjust as needed */
      display: flex;
      align-items: center;
      justify-content: center;
      text-align: center;
      color: var(--page-hj88-text-color-light);
      overflow: hidden;
      padding-top: 10px; /* Desktop */
      box-sizing: border-box;
    }

    .page-hj88__hero-background {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.6));
      z-index: 1;
      display: flex;
      justify-content: center;
      align-items: center;
      overflow: hidden;
    }

    .page-hj88__hero-background img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      position: absolute;
      top: 0;
      left: 0;
      z-index: -1; /* Place image behind the gradient overlay */
      max-width: 100%;
    }

    .page-hj88__hero-content {
      position: relative;
      z-index: 2;
      padding: 20px;
      max-width: 800px;
      background-color: rgba(0, 0, 0, 0.4);
      border-radius: 10px;
    }

    .page-hj88__hero-title {
      font-size: 2.8em;
      margin-bottom: 15px;
      font-weight: bold;
      color: var(--page-hj88-accent-color);
      text-shadow: 2px 2px 4px var(--page-hj88-text-color-dark);
    }

    .page-hj88__hero-description {
      font-size: 1.2em;
      margin-bottom: 30px;
      color: var(--page-hj88-text-color-light);
    }

    .page-hj88__hero-button {
      display: inline-block;
      background-color: var(--page-hj88-accent-color);
      color: var(--page-hj88-text-color-dark);
      padding: 15px 30px;
      border-radius: 8px;
      font-size: 1.1em;
      font-weight: bold;
      transition: background-color var(--page-hj88-transition-speed) ease;
      cursor: pointer;
      border: none;
      box-shadow: 0 4px 6px var(--page-hj88-shadow);
    }

    .page-hj88__hero-button:hover {
      background-color: #e0a800;
    }

    /* Floating Promo Button */
    .page-hj88__floating-promo-button {
      position: fixed;
      bottom: 20px;
      right: 20px;
      background-color: #dc3545; /* Đỏ */
      color: var(--page-hj88-text-color-light);
      padding: 12px 20px;
      border-radius: 50px;
      text-align: center;
      font-size: 1.1em;
      font-weight: bold;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
      z-index: 1000;
      cursor: pointer;
      transition: background-color var(--page-hj88-transition-speed) ease;
      animation: page-hj88__pulse 2s infinite;
      border: none;
    }

    .page-hj88__floating-promo-button:hover {
      background-color: #c82333;
    }

    @keyframes page-hj88__pulse {
      0% {
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(220, 53, 69, 0.7);
      }
      70% {
        transform: scale(1.05);
        box-shadow: 0 0 0 15px rgba(220, 53, 69, 0);
      }
      100% {
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(220, 53, 69, 0);
      }
    }

    /* General Section Styling */
    .page-hj88__section {
      padding: 60px 20px;
      text-align: center;
    }

    .page-hj88__section-dark {
      background-color: var(--page-hj88-background-dark);
      color: var(--page-hj88-text-color-light);
    }

    .page-hj88__section-title {
      font-size: 2.2em;
      margin-bottom: 20px;
      color: var(--page-hj88-primary-color);
      font-weight: bold;
    }
    .page-hj88__section-dark .page-hj88__section-title {
      color: var(--page-hj88-accent-color);
    }

    .page-hj88__section-subtitle {
      font-size: 1.1em;
      margin-bottom: 40px;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
    }

    /* Intro Section */
    .page-hj88__intro-section .page-hj88__section-title {
      color: var(--page-hj88-primary-color);
    }
    .page-hj88__intro-content {
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 30px;
      max-width: 900px;
      margin: 0 auto;
      text-align: left;
    }
    .page-hj88__intro-text {
      font-size: 1.05em;
      color: var(--page-hj88-text-color-dark);
    }
    .page-hj88__intro-image-wrapper {
      width: 100%;
      max-width: 600px;
      overflow: hidden;
      border-radius: 10px;
      box-shadow: 0 5px 15px var(--page-hj88-shadow);
    }
    .page-hj88__intro-image-wrapper img {
      max-width: 100%;
      height: auto;
      display: block;
    }

    /* Game Categories */
    .page-hj88__game-categories-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 30px;
      margin-top: 40px;
    }

    .page-hj88__game-card {
      background-color: var(--page-hj88-text-color-light);
      border-radius: 10px;
      box-shadow: 0 4px 15px var(--page-hj88-shadow);
      overflow: hidden;
      transition: transform var(--page-hj88-transition-speed) ease, box-shadow var(--page-hj88-transition-speed) ease;
      text-align: left;
      display: flex;
      flex-direction: column;
    }

    .page-hj88__game-card:hover {
      transform: translateY(-10px);
      box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    }

    .page-hj88__game-card-image-wrapper {
      width: 100%;
      height: 200px; /* Fixed height for consistency */
      overflow: hidden;
    }

    .page-hj88__game-card-image-wrapper img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
      max-width: 100%;
    }

    .page-hj88__game-card-content {
      padding: 20px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .page-hj88__game-card-title {
      font-size: 1.5em;
      margin-bottom: 10px;
      color: var(--page-hj88-primary-color);
      font-weight: bold;
    }

    .page-hj88__game-card-description {
      font-size: 0.95em;
      color: var(--page-hj88-secondary-color);
      margin-bottom: 15px;
    }

    .page-hj88__game-card-button {
      display: inline-block;
      background-color: var(--page-hj88-primary-color);
      color: var(--page-hj88-text-color-light);
      padding: 10px 15px;
      border-radius: 5px;
      font-size: 0.9em;
      font-weight: bold;
      transition: background-color var(--page-hj88-transition-speed) ease;
      cursor: pointer;
      border: none;
      text-align: center;
      margin-top: auto; /* Push button to bottom */
    }

    .page-hj88__game-card-button:hover {
      background-color: #0056b3;
    }

    /* Why Choose Section */
    .page-hj88__why-choose-list {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 30px;
      margin-top: 40px;
      text-align: left;
    }

    .page-hj88__why-choose-item {
      background-color: var(--page-hj88-text-color-light);
      padding: 30px;
      border-radius: 10px;
      box-shadow: 0 4px 10px var(--page-hj88-shadow);
      transition: transform var(--page-hj88-transition-speed) ease;
    }

    .page-hj88__why-choose-item:hover {
      transform: translateY(-5px);
    }

    .page-hj88__why-choose-item-title {
      font-size: 1.3em;
      color: var(--page-hj88-primary-color);
      margin-bottom: 15px;
      font-weight: bold;
    }

    .page-hj88__why-choose-item-description {
      color: var(--page-hj88-secondary-color);
    }

    /* Guide Section */
    .page-hj88__guide-steps {
      display: flex;
      flex-direction: column;
      gap: 40px;
      margin-top: 40px;
      max-width: 900px;
      margin-left: auto;
      margin-right: auto;
      text-align: left;
    }

    .page-hj88__guide-step {
      display: flex;
      align-items: center;
      gap: 25px;
      background-color: var(--page-hj88-text-color-light);
      padding: 25px;
      border-radius: 10px;
      box-shadow: 0 4px 12px var(--page-hj88-shadow);
    }

    .page-hj88__guide-step:nth-child(even) {
      flex-direction: row-reverse;
      text-align: right;
    }

    .page-hj88__guide-step-number {
      font-size: 2.5em;
      font-weight: bold;
      color: var(--page-hj88-primary-color);
      min-width: 60px;
      text-align: center;
    }

    .page-hj88__guide-step-content {
      flex: 1;
    }

    .page-hj88__guide-step-title {
      font-size: 1.6em;
      color: var(--page-hj88-primary-color);
      margin-bottom: 10px;
    }

    .page-hj88__guide-step-description {
      color: var(--page-hj88-secondary-color);
    }
    .page-hj88__guide-step-image-wrapper {
      width: 100%;
      max-width: 250px;
      overflow: hidden;
      border-radius: 8px;
      box-shadow: 0 2px 8px var(--page-hj88-shadow);
    }
    .page-hj88__guide-step-image-wrapper img {
      max-width: 100%;
      height: auto;
      display: block;
    }


    /* FAQ Section */
    .page-hj88__faq-section {
      background-color: var(--page-hj88-background-dark);
      color: var(--page-hj88-text-color-light);
    }
    .page-hj88__faq-section .page-hj88__section-title {
      color: var(--page-hj88-accent-color);
    }

    .page-hj88__faq-list {
      max-width: 800px;
      margin: 40px auto 0 auto;
      text-align: left;
    }

    .page-hj88__faq-item {
      background-color: #495057; /* Darker gray for items */
      border-radius: 8px;
      margin-bottom: 15px;
      overflow: hidden;
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    }

    .page-hj88__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 20px 25px;
      cursor: pointer;
      user-select: none;
      background-color: #5a6268; /* Slightly lighter for question bar */
      transition: background-color var(--page-hj88-transition-speed) ease;
    }

    .page-hj88__faq-question:hover {
      background-color: #6c757d;
    }

    .page-hj88__faq-question h3 {
      margin: 0;
      font-size: 1.15em;
      color: var(--page-hj88-text-color-light);
      pointer-events: none; /* Prevent h3 from blocking click */
    }

    .page-hj88__faq-toggle {
      font-size: 1.8em;
      font-weight: bold;
      color: var(--page-hj88-accent-color);
      transition: transform var(--page-hj88-transition-speed) ease;
      pointer-events: none; /* Prevent toggle from blocking click */
    }

    .page-hj88__faq-item.active .page-hj88__faq-toggle {
      transform: rotate(45deg); /* Plus to X (minus visual effect) */
    }

    .page-hj88__faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 25px;
      opacity: 0;
      transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
      color: #e9ecef; /* Light gray for answer text */
    }

    .page-hj88__faq-item.active .page-hj88__faq-answer {
      max-height: 2000px !important; /* Sufficiently large */
      padding: 20px 25px !important;
      opacity: 1;
    }

    /* CTA Section */
    .page-hj88__cta-section {
      background: linear-gradient(135deg, var(--page-hj88-primary-color), #0056b3);
      color: var(--page-hj88-text-color-light);
    }
    .page-hj88__cta-title {
      font-size: 2.5em;
      margin-bottom: 20px;
      color: var(--page-hj88-accent-color);
      font-weight: bold;
    }
    .page-hj88__cta-description {
      font-size: 1.2em;
      margin-bottom: 30px;
      max-width: 700px;
      margin-left: auto;
      margin-right: auto;
    }
    .page-hj88__cta-button {
      display: inline-block;
      background-color: var(--page-hj88-accent-color);
      color: var(--page-hj88-text-color-dark);
      padding: 18px 35px;
      border-radius: 8px;
      font-size: 1.2em;
      font-weight: bold;
      transition: background-color var(--page-hj88-transition-speed) ease, transform var(--page-hj88-transition-speed) ease;
      cursor: pointer;
      border: none;
      box-shadow: 0 6px 15px rgba(0, 0, 0, 0.2);
    }
    .page-hj88__cta-button:hover {
      background-color: #e0a800;
      transform: translateY(-3px);
    }

    /* Responsive adjustments */
    @media (max-width: 768px) {
      .page-hj88__hero-section {
        min-height: 350px;
        padding-top: 10px !important; /* Mobile */
      }
      .page-hj88__hero-title {
        font-size: 2em;
      }
      .page-hj88__hero-description {
        font-size: 1em;
      }
      .page-hj88__hero-button {
        padding: 12px 25px;
        font-size: 1em;
      }

      .page-hj88__floating-promo-button {
        bottom: 15px;
        right: 15px;
        padding: 10px 18px;
        font-size: 1em;
      }

      .page-hj88__section {
        padding: 40px 15px;
      }
      .page-hj88__section-title {
        font-size: 1.8em;
      }
      .page-hj88__section-subtitle {
        font-size: 1em;
      }

      .page-hj88__intro-content {
        gap: 20px;
      }
      .page-hj88__intro-text {
        font-size: 0.95em;
      }

      .page-hj88__game-categories-grid {
        grid-template-columns: 1fr;
        gap: 20px;
      }
      .page-hj88__game-card-image-wrapper {
        height: 180px;
      }
      .page-hj88__game-card-title {
        font-size: 1.3em;
      }
      .page-hj88__game-card-description {
        font-size: 0.9em;
      }

      .page-hj88__why-choose-list {
        grid-template-columns: 1fr;
        gap: 20px;
      }
      .page-hj88__why-choose-item {
        padding: 20px;
      }
      .page-hj88__why-choose-item-title {
        font-size: 1.2em;
      }

      .page-hj88__guide-step {
        flex-direction: column !important; /* Override for mobile */
        text-align: center !important; /* Override for mobile */
        gap: 15px;
        padding: 20px;
      }
      .page-hj88__guide-step-number {
        font-size: 2em;
        min-width: unset;
      }
      .page-hj88__guide-step-title {
        font-size: 1.4em;
      }
      .page-hj88__guide-step-image-wrapper {
        max-width: 200px;
      }

      .page-hj88__faq-list {
        margin-top: 20px;
      }
      .page-hj88__faq-question {
        padding: 15px 20px;
      }
      .page-hj88__faq-question h3 {
        font-size: 1em;
      }
      .page-hj88__faq-toggle {
        font-size: 1.5em;
      }
      .page-hj88__faq-answer {
        padding: 0 20px;
      }
      .page-hj88__faq-item.active .page-hj88__faq-answer {
        padding: 15px 20px !important;
      }

      .page-hj88__cta-title {
        font-size: 2em;
      }
      .page-hj88__cta-description {
        font-size: 1em;
      }
      .page-hj88__cta-button {
        padding: 15px 30px;
        font-size: 1.1em;
      }
      /* Ensure images are responsive */
      .page-hj88 img {
        max-width: 100% !important;
        height: auto !important;
      }
      .page-hj88__intro-image-wrapper,
      .page-hj88__game-card-image-wrapper,
      .page-hj88__guide-step-image-wrapper {
        width: 100% !important;
        max-width: 100% !important;
        overflow: hidden !important;
        box-sizing: border-box !important;
      }
    }