/* Tổng quan */
    .page-king52club {
      font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
      color: #333;
      line-height: 1.6;
      background-color: #f4f7f6;
      padding: 0;
      margin: 0;
    }

    .page-king52club__container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 20px;
    }

    /* Hero Section */
    .page-king52club__hero-section {
      position: relative;
      background-color: #0d1a26; /* Dark background for contrast */
      color: #fff;
      text-align: center;
      padding: 80px 20px 60px; /* Adjust padding-top for fixed header */
      overflow: hidden;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      min-height: 400px; /* Ensure a decent height for the banner */
    }

    .page-king52club__hero-background {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      opacity: 0.4; /* Slightly transparent overlay */
      z-index: 1;
    }

    .page-king52club__hero-content {
      position: relative;
      z-index: 2;
      max-width: 800px;
      margin: 0 auto;
    }

    .page-king52club__hero-title {
      font-size: 2.8em;
      margin-bottom: 15px;
      line-height: 1.2;
      color: #ffcc00; /* Gold/yellow for emphasis */
      text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
    }

    .page-king52club__hero-description {
      font-size: 1.2em;
      margin-bottom: 30px;
      color: #e0e0e0;
    }

    /* Floating Login Button */
    .page-king52club__floating-button {
      position: fixed;
      bottom: 20px;
      right: 20px;
      background-color: #ff4500; /* Orange-red for urgency */
      color: #fff;
      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, 0.3);
      transition: transform 0.3s ease, background-color 0.3s ease;
      z-index: 1000;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: center;
      text-align: center;
      border: none;
    }

    .page-king52club__floating-button:hover {
      transform: translateY(-5px);
      background-color: #e63900;
    }

    /* Section Styling */
    .page-king52club__section {
      padding: 60px 20px;
      background-color: #fff;
      margin-bottom: 20px;
      border-radius: 8px;
      box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
    }

    .page-king52club__section--dark {
      background-color: #2c3e50;
      color: #ecf0f1;
    }

    .page-king52club__section-title {
      font-size: 2.2em;
      color: #007bff; /* Blue for titles */
      text-align: center;
      margin-bottom: 40px;
      position: relative;
      padding-bottom: 10px;
    }

    .page-king52club__section--dark .page-king52club__section-title {
      color: #ffcc00;
    }

    .page-king52club__section-title::after {
      content: '';
      position: absolute;
      left: 50%;
      bottom: 0;
      transform: translateX(-50%);
      width: 80px;
      height: 4px;
      background-color: #ffcc00;
      border-radius: 2px;
    }

    .page-king52club__section--dark .page-king52club__section-title::after {
      background-color: #007bff;
    }

    /* Feature List */
    .page-king52club__features-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 30px;
    }

    .page-king52club__feature-item {
      background-color: #f9f9f9;
      padding: 30px;
      border-radius: 8px;
      text-align: center;
      box-shadow: 0 2px 5px rgba(0, 0, 0, 0.08);
      transition: transform 0.3s ease;
      box-sizing: border-box;
    }

    .page-king52club__feature-item:hover {
      transform: translateY(-8px);
    }

    .page-king52club__feature-icon {
      width: 200px; /* Minimum 200x200 */
      height: 200px;
      margin: 0 auto 20px;
      object-fit: contain;
      display: block;
    }

    .page-king52club__feature-title {
      font-size: 1.4em;
      color: #007bff;
      margin-bottom: 15px;
    }

    .page-king52club__feature-description {
      font-size: 1em;
      color: #555;
    }

    /* Game Categories */
    .page-king52club__game-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 30px;
    }

    .page-king52club__game-card {
      background-color: #fff;
      border-radius: 8px;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
      overflow: hidden;
      text-align: center;
      transition: transform 0.3s ease;
      box-sizing: border-box;
    }

    .page-king52club__game-card:hover {
      transform: translateY(-10px);
    }

    .page-king52club__game-image {
      width: 100%;
      height: 200px; /* Minimum 200x200 */
      object-fit: cover;
      display: block;
    }

    .page-king52club__game-content {
      padding: 25px;
    }

    .page-king52club__game-title {
      font-size: 1.5em;
      color: #333;
      margin-bottom: 10px;
    }

    .page-king52club__game-description {
      font-size: 0.95em;
      color: #666;
    }

    .page-king52club__game-cta {
      display: inline-block;
      background-color: #ffcc00;
      color: #333;
      padding: 10px 20px;
      border-radius: 5px;
      text-decoration: none;
      font-weight: bold;
      margin-top: 15px;
      transition: background-color 0.3s ease;
      border: none;
    }

    .page-king52club__game-cta:hover {
      background-color: #e0b300;
    }

    /* Guide Section */
    .page-king52club__guide-list {
      list-style: none;
      padding: 0;
      display: flex;
      flex-wrap: wrap;
      gap: 20px;
      justify-content: center;
    }

    .page-king52club__guide-item {
      background-color: #e6f2ff;
      padding: 25px;
      border-radius: 8px;
      box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
      text-align: center;
      flex: 1 1 calc(33% - 20px); /* 3 items per row on desktop */
      min-width: 280px;
      box-sizing: border-box;
    }

    .page-king52club__guide-item:nth-child(even) {
      background-color: #d9ecff;
    }

    .page-king52club__guide-step-number {
      font-size: 2em;
      color: #007bff;
      font-weight: bold;
      margin-bottom: 10px;
    }

    .page-king52club__guide-title {
      font-size: 1.3em;
      color: #333;
      margin-bottom: 10px;
    }

    .page-king52club__guide-description {
      font-size: 0.95em;
      color: #555;
    }

    .page-king52club__guide-button {
      display: inline-block;
      background-color: #007bff;
      color: #fff;
      padding: 10px 20px;
      border-radius: 5px;
      text-decoration: none;
      font-weight: bold;
      margin-top: 15px;
      transition: background-color 0.3s ease;
      border: none;
    }

    .page-king52club__guide-button:hover {
      background-color: #0056b3;
    }

    /* Promotions Section */
    .page-king52club__promo-card {
      background-color: #fff;
      border-radius: 10px;
      box-shadow: 0 5px 15px rgba(0, 0, 0, 0.15);
      padding: 30px;
      text-align: center;
      max-width: 600px;
      margin: 0 auto;
      border: 3px solid #ffcc00;
      box-sizing: border-box;
    }

    .page-king52club__promo-title {
      font-size: 2.5em;
      color: #ff4500;
      margin-bottom: 20px;
      font-weight: bold;
      text-shadow: 1px 1px 2px rgba(0,0,0,0.1);
    }

    .page-king52club__promo-description {
      font-size: 1.1em;
      color: #444;
      margin-bottom: 30px;
    }

    .page-king52club__promo-cta {
      display: inline-block;
      background-color: #007bff;
      color: #fff;
      padding: 15px 30px;
      border-radius: 50px;
      text-decoration: none;
      font-weight: bold;
      font-size: 1.2em;
      transition: background-color 0.3s ease, transform 0.3s ease;
      border: none;
    }

    .page-king52club__promo-cta:hover {
      background-color: #0056b3;
      transform: translateY(-3px);
    }

    /* FAQ Section */
    .page-king52club__faq-container {
      max-width: 900px;
      margin: 0 auto;
    }

    .page-king52club__faq-item {
      background-color: #f9f9f9;
      border: 1px solid #eee;
      border-radius: 8px;
      margin-bottom: 15px;
      overflow: hidden;
      box-shadow: 0 2px 5px rgba(0,0,0,0.05);
    }

    .page-king52club__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 20px 25px;
      background-color: #007bff;
      color: #fff;
      cursor: pointer;
      font-size: 1.1em;
      font-weight: bold;
      user-select: none;
      transition: background-color 0.3s ease;
    }

    .page-king52club__faq-question:hover {
      background-color: #0056b3;
    }

    .page-king52club__faq-question h3 {
      margin: 0;
      font-size: 1.1em;
      color: #fff;
      pointer-events: none; /* Prevent h3 from blocking click event */
    }

    .page-king52club__faq-toggle {
      font-size: 1.5em;
      line-height: 1;
      margin-left: 15px;
      transition: transform 0.3s ease;
      pointer-events: none; /* Prevent toggle icon from blocking click event */
    }

    .page-king52club__faq-item.active .page-king52club__faq-toggle::before {
        content: "−"; /* Change + to - */
    }
    .page-king52club__faq-toggle::before {
        content: "+";
    }

    .page-king52club__faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 25px;
      background-color: #fff;
      color: #333;
      transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
      opacity: 0;
      font-size: 0.95em;
    }

    .page-king52club__faq-item.active .page-king52club__faq-answer {
      max-height: 2000px !important; /* Sufficiently large */
      padding: 20px 25px !important;
      opacity: 1;
    }

    /* Responsive Design */
    @media (max-width: 768px) {
      .page-king52club__hero-section {
        padding-top: 60px; /* Adjusted padding for mobile fixed header */
        padding-bottom: 40px;
        min-height: 300px;
      }

      .page-king52club__hero-title {
        font-size: 2em;
      }

      .page-king52club__hero-description {
        font-size: 1em;
      }

      .page-king52club__section {
        padding: 40px 15px;
      }

      .page-king52club__section-title {
        font-size: 1.8em;
        margin-bottom: 30px;
      }

      .page-king52club__features-grid,
      .page-king52club__game-grid {
        grid-template-columns: 1fr;
      }

      /* List item responsive rules for all list-like structures */
      .page-king52club__feature-item,
      .page-king52club__game-card,
      .page-king52club__guide-item,
      .page-king52club__faq-item {
        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;
        word-break: break-word !important;
      }

      .page-king52club__guide-list {
        padding: 0 !important;
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
      }

      .page-king52club__guide-item {
        flex: 1 1 100%;
        padding: 20px;
      }

      .page-king52club__promo-title {
        font-size: 1.8em;
      }

      .page-king52club__promo-description {
        font-size: 0.95em;
      }

      .page-king52club__promo-cta {
        padding: 12px 25px;
        font-size: 1.1em;
      }

      .page-king52club__floating-button {
        bottom: 15px;
        right: 15px;
        padding: 12px 20px;
        font-size: 1em;
      }

      .page-king52club__faq-question,
      .page-king52club__faq-answer {
        padding: 15px 20px;
      }
      .page-king52club__faq-question h3 {
        font-size: 1em;
      }
      .page-king52club__faq-item.active .page-king52club__faq-answer {
        padding: 15px 20px !important;
      }

      /* Image responsive rules */
      .page-king52club img {
        max-width: 100% !important;
        height: auto !important;
        box-sizing: border-box !important;
      }
      .page-king52club__game-image,
      .page-king52club__feature-icon {
        width: 100% !important; /* Ensure images don't overflow */
        height: auto !important; /* Maintain aspect ratio */
        max-width: 200px !important; /* Or suitable for icon-like images */
        display: block !important;
        margin-left: auto !important;
        margin-right: auto !important;
        box-sizing: border-box !important;
      }
      .page-king52club__hero-background {
        max-width: 100% !important;
        height: 100% !important;
        object-fit: cover !important;
      }
    }

    @media (max-width: 480px) {
      .page-king52club__hero-title {
        font-size: 1.8em;
      }
      .page-king52club__section-title {
        font-size: 1.6em;
      }
      .page-king52club__promo-title {
        font-size: 1.6em;
      }
    }