/* Tổng quan */
    .page-0king {
      font-family: 'Arial', sans-serif;
      color: #333;
      line-height: 1.6;
      background-color: #f4f7f6;
      padding-bottom: 80px; /* Để chừa chỗ cho nút nổi */
    }

    /* Các phần chung */
    .page-0king__section {
      padding: 40px 20px;
      max-width: 1200px;
      margin: 0 auto;
      box-sizing: border-box;
    }
    .page-0king__section--dark {
      background-color: #2c3e50;
      color: #ecf0f1;
    }
    .page-0king__section-title {
      text-align: center;
      color: #2980b9;
      margin-bottom: 30px;
      font-size: 2.2em;
      font-weight: bold;
    }
    .page-0king__section--dark .page-0king__section-title {
      color: #3498db;
    }
    .page-0king__text-center {
      text-align: center;
    }
    .page-0king__button {
      display: inline-block;
      background-color: #e74c3c;
      color: #fff;
      padding: 12px 25px;
      border-radius: 5px;
      text-decoration: none;
      font-weight: bold;
      transition: background-color 0.3s ease;
      border: none;
      cursor: pointer;
      font-size: 1em;
    }
    .page-0king__button:hover {
      background-color: #c0392b;
    }
    .page-0king__button--secondary {
      background-color: #27ae60;
    }
    .page-0king__button--secondary:hover {
      background-color: #229a56;
    }

    /* Hero Section */
    .page-0king__hero-section {
      background: linear-gradient(135deg, #1a2a6c, #b21f1f, #fdbb2d);
      color: #fff;
      text-align: center;
      padding: 60px 20px 40px;
      position: relative;
      overflow: hidden;
      border-bottom-left-radius: 20px;
      border-bottom-right-radius: 20px;
      padding-top: 10px; /* Small decorative padding, body handles header offset */
    }
    .page-0king__hero-content {
      position: relative;
      z-index: 2;
      max-width: 900px;
      margin: 0 auto;
    }
    .page-0king__hero-title {
      font-size: 2.8em;
      margin-bottom: 15px;
      line-height: 1.2;
      color: #fff;
      text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
    }
    .page-0king__hero-subtitle {
      font-size: 1.3em;
      margin-bottom: 30px;
      color: #f0f0f0;
    }
    .page-0king__hero-image {
      width: 100%;
      max-width: 800px;
      height: auto;
      margin: 30px auto 0;
      border-radius: 15px;
      box-shadow: 0 10px 20px rgba(0,0,0,0.3);
      display: block;
      object-fit: cover;
    }

    /* Nút đăng ký/đăng nhập nổi */
    .page-0king__floating-buttons {
      position: fixed;
      right: 15px;
      bottom: 100px; /* Cao hơn footer và để tránh thanh cuộn */
      z-index: 1000;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .page-0king__floating-button {
      background-color: #ff0000;
      color: #fff;
      padding: 10px 15px;
      border-radius: 50px;
      text-decoration: none;
      font-weight: bold;
      box-shadow: 0 4px 8px rgba(0,0,0,0.2);
      transition: background-color 0.3s ease, transform 0.2s ease;
      text-align: center;
      font-size: 0.9em;
      min-width: 90px;
      border: none;
      cursor: pointer;
    }
    .page-0king__floating-button:hover {
      background-color: #cc0000;
      transform: translateY(-2px);
    }
    .page-0king__floating-button--login {
      background-color: #27ae60;
    }
    .page-0king__floating-button--login:hover {
      background-color: #229a56;
    }

    /* Giới thiệu 0king */
    .page-0king__intro-content {
      display: flex;
      flex-direction: column;
      gap: 20px;
      align-items: center;
    }
    .page-0king__intro-text {
      max-width: 800px;
      text-align: center;
    }
    .page-0king__intro-image {
      width: 100%;
      max-width: 600px;
      height: auto;
      border-radius: 10px;
      box-shadow: 0 5px 15px rgba(0,0,0,0.1);
      object-fit: cover;
    }

    /* Danh mục trò chơi */
    .page-0king__game-categories {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 25px;
      margin-top: 30px;
    }
    .page-0king__game-card {
      background-color: #fff;
      border-radius: 12px;
      box-shadow: 0 4px 15px rgba(0,0,0,0.08);
      overflow: hidden;
      text-align: center;
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: space-between;
      padding-bottom: 20px;
    }
    .page-0king__game-card:hover {
      transform: translateY(-8px);
      box-shadow: 0 8px 25px rgba(0,0,0,0.15);
    }
    .page-0king__game-card-image {
      width: 100%;
      height: 200px; /* Fixed height for consistency */
      object-fit: cover;
      border-bottom: 1px solid #eee;
      margin-bottom: 15px;
    }
    .page-0king__game-card-title {
      font-size: 1.4em;
      color: #34495e;
      margin: 0 15px 10px;
      font-weight: bold;
    }
    .page-0king__game-card-description {
      font-size: 0.95em;
      color: #7f8c8d;
      margin: 0 15px 15px;
      flex-grow: 1;
    }
    .page-0king__game-card-button {
      padding: 8px 20px;
      font-size: 0.9em;
      border-radius: 20px;
    }

    /* Khuyến mãi */
    .page-0king__promotions-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 25px;
      margin-top: 30px;
    }
    .page-0king__promo-card {
      background-color: #fff;
      border-radius: 12px;
      box-shadow: 0 4px 15px rgba(0,0,0,0.08);
      overflow: hidden;
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      display: flex;
      flex-direction: column;
      align-items: center;
      text-align: center;
      padding-bottom: 20px;
    }
    .page-0king__promo-card:hover {
      transform: translateY(-8px);
      box-shadow: 0 8px 25px rgba(0,0,0,0.15);
    }
    .page-0king__promo-image {
      width: 100%;
      height: 220px;
      object-fit: cover;
      border-bottom: 1px solid #eee;
      margin-bottom: 15px;
    }
    .page-0king__promo-title {
      font-size: 1.5em;
      color: #e74c3c;
      margin: 0 15px 10px;
      font-weight: bold;
    }
    .page-0king__promo-description {
      font-size: 1em;
      color: #555;
      margin: 0 15px 15px;
      flex-grow: 1;
    }
    .page-0king__promo-button {
      padding: 10px 25px;
      font-size: 1em;
    }

    /* Lý do chọn 0king */
    .page-0king__features-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 25px;
      margin-top: 30px;
    }
    .page-0king__feature-item {
      background-color: #fff;
      border-radius: 12px;
      box-shadow: 0 4px 15px rgba(0,0,0,0.08);
      padding: 25px;
      text-align: center;
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      box-sizing: border-box; /* Crucial for list item responsiveness */
    }
    .page-0king__feature-item:hover {
      transform: translateY(-8px);
      box-shadow: 0 8px 25px rgba(0,0,0,0.15);
    }
    .page-0king__feature-icon {
      width: 100px;
      height: 100px;
      margin-bottom: 15px;
      object-fit: contain;
    }
    .page-0king__feature-title {
      font-size: 1.3em;
      color: #2c3e50;
      margin-bottom: 10px;
      font-weight: bold;
    }
    .page-0king__feature-description {
      font-size: 0.95em;
      color: #7f8c8d;
    }

    /* Thanh toán & Nhà cung cấp */
    .page-0king__partners-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
      gap: 20px;
      margin-top: 30px;
    }
    .page-0king__partner-item {
      background-color: #fff;
      border-radius: 8px;
      box-shadow: 0 2px 10px rgba(0,0,0,0.05);
      padding: 15px;
      text-align: center;
      display: flex;
      align-items: center;
      justify-content: center;
      min-height: 80px;
      box-sizing: border-box;
    }
    .page-0king__partner-logo {
      max-width: 100%;
      max-height: 60px;
      height: auto;
      object-fit: contain;
    }

    /* FAQ Section */
    .page-0king__faq-section {
      background-color: #fff;
      padding: 40px 20px;
      max-width: 900px;
      margin: 40px auto;
      border-radius: 15px;
      box-shadow: 0 5px 20px rgba(0,0,0,0.08);
      box-sizing: border-box;
    }
    .page-0king__faq-title {
      text-align: center;
      color: #2980b9;
      margin-bottom: 30px;
      font-size: 2.2em;
      font-weight: bold;
    }
    .page-0king__faq-item {
      border-bottom: 1px solid #eee;
      margin-bottom: 10px;
    }
    .page-0king__faq-item:last-child {
      border-bottom: none;
      margin-bottom: 0;
    }
    .page-0king__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 15px 10px;
      cursor: pointer;
      user-select: none;
      background-color: #f9f9f9;
      border-radius: 8px;
      transition: background-color 0.3s ease;
    }
    .page-0king__faq-question:hover {
      background-color: #e0e0e0;
    }
    .page-0king__faq-question h3 {
      margin: 0;
      font-size: 1.1em;
      color: #333;
      flex-grow: 1;
      pointer-events: none; /* Prevent h3 from blocking click on parent */
    }
    .page-0king__faq-toggle {
      font-size: 1.5em;
      font-weight: bold;
      color: #2980b9;
      transition: transform 0.3s ease;
      pointer-events: none; /* Prevent toggle from blocking click on parent */
      min-width: 20px; /* Ensure consistent width */
      text-align: center;
    }
    .page-0king__faq-item.active .page-0king__faq-toggle {
      transform: rotate(45deg); /* Change '+' to 'X' or '-' */
      color: #e74c3c;
    }
    .page-0king__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 0.4s ease;
      color: #555;
      font-size: 0.95em;
    }
    .page-0king__faq-item.active .page-0king__faq-answer {
      max-height: 2000px !important; /* Sufficiently large */
      padding: 20px 15px !important;
      opacity: 1;
    }

    /* Call to Action cuối trang */
    .page-0king__cta-section {
      text-align: center;
      padding: 50px 20px;
      background-color: #34495e;
      color: #fff;
      border-top-left-radius: 20px;
      border-top-right-radius: 20px;
    }
    .page-0king__cta-title {
      font-size: 2.5em;
      margin-bottom: 20px;
      color: #ecf0f1;
    }
    .page-0king__cta-description {
      font-size: 1.2em;
      margin-bottom: 30px;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
    }

    /* Responsive adjustments */
    @media (max-width: 768px) {
      .page-0king__section {
        padding: 30px 15px;
      }
      .page-0king__section-title {
        font-size: 1.8em;
        margin-bottom: 20px;
      }
      .page-0king__hero-title {
        font-size: 2em;
      }
      .page-0king__hero-subtitle {
        font-size: 1.1em;
      }
      .page-0king__game-categories,
      .page-0king__promotions-grid,
      .page-0king__features-grid,
      .page-0king__partners-grid {
        grid-template-columns: 1fr; /* Stack cards on small screens */
        gap: 20px;
      }

      /* List item responsiveness for all grid/flex items */
      .page-0king__game-card,
      .page-0king__promo-card,
      .page-0king__feature-item,
      .page-0king__partner-item {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
        padding-left: 15px !important; /* Adjust padding as needed for mobile */
        padding-right: 15px !important;
      }
      .page-0king__game-card-description,
      .page-0king__promo-description,
      .page-0king__feature-description,
      .page-0king__faq-answer p {
        word-wrap: break-word !important;
        overflow-wrap: break-word !important;
        word-break: break-word !important;
      }

      .page-0king__game-card-image,
      .page-0king__promo-image,
      .page-0king__intro-image,
      .page-0king__hero-image,
      .page-0king__feature-icon,
      .page-0king__partner-logo {
        max-width: 100% !important;
        height: auto !important;
        object-fit: contain; /* Ensure images fit without cropping too much */
      }
      .page-0king__game-card-image, .page-0king__promo-image {
        height: 180px; /* Slightly smaller height for mobile cards */
      }

      .page-0king__floating-buttons {
        bottom: 20px; /* Adjust for mobile footer */
        flex-direction: row;
        width: calc(100% - 30px);
        left: 15px;
        right: 15px;
        justify-content: center;
      }
      .page-0king__floating-button {
        flex: 1;
        font-size: 1em;
        padding: 12px 10px;
      }
      .page-0king__faq-section {
        margin: 20px auto;
        padding: 25px 15px;
      }
      .page-0king__faq-question h3 {
        font-size: 1em;
      }
      .page-0king__faq-answer {
        padding: 0 10px;
      }
      .page-0king__faq-item.active .page-0king__faq-answer {
        padding: 15px 10px !important;
      }
      .page-0king__cta-title {
        font-size: 1.8em;
      }
      .page-0king__cta-description {
        font-size: 1em;
      }
    }
    @media (max-width: 480px) {
      .page-0king__hero-title {
        font-size: 1.8em;
      }
      .page-0king__floating-buttons {
        bottom: 15px;
      }
      .page-0king__floating-button {
        font-size: 0.9em;
        padding: 10px 8px;
      }
    }