/* Tổng quan */
    :root {
      --page-b52play-primary-color: #f7b32b; /* Vàng cam */
      --page-b52play-secondary-color: #2c3e50; /* Xám xanh đậm */
      --page-b52play-accent-color: #e74c3c; /* Đỏ */
      --page-b52play-text-light: #ecf0f1; /* Xám nhạt */
      --page-b52play-text-dark: #34495e; /* Xám đậm */
      --page-b52play-bg-dark: #1a252f; /* Nền rất đậm */
      --page-b52play-bg-light: #fdfdfd; /* Nền sáng */
      --page-b52play-border-radius: 8px;
      --page-b52play-transition: all 0.3s ease;
    }

    body {
      font-family: 'Arial', sans-serif;
      line-height: 1.6;
      color: var(--page-b52play-text-dark);
      background-color: var(--page-b52play-bg-light);
    }

    /* main content wrapper */
    .page-b52play {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 15px;
      box-sizing: border-box;
      background-color: var(--page-b52play-bg-light);
    }

    /* Các phần chung */
    .page-b52play-section {
      padding: 40px 0;
      text-align: center;
    }

    .page-b52play-section-dark {
      background-color: var(--page-b52play-bg-dark);
      color: var(--page-b52play-text-light);
    }

    .page-b52play-section h2, .page-b52play-section h3 {
      color: var(--page-b52play-secondary-color);
      margin-bottom: 25px;
      font-size: 2.2em;
      font-weight: bold;
    }
    .page-b52play-section-dark h2, .page-b52play-section-dark h3 {
        color: var(--page-b52play-primary-color);
    }

    .page-b52play-section p {
      margin-bottom: 20px;
      font-size: 1.1em;
    }

    /* Banner */
    .page-b52play-hero {
      position: relative;
      background-color: var(--page-b52play-bg-dark);
      color: var(--page-b52play-text-light);
      padding: 60px 0 30px; /* banner top, text below */
      overflow: hidden;
      text-align: center;
      min-height: 350px;
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
    }

    .page-b52play-hero-image {
      width: 100%;
      max-width: 100%;
      height: auto;
      display: block;
      margin-bottom: 20px;
      border-radius: var(--page-b52play-border-radius);
      object-fit: cover;
      max-height: 250px;
    }

    .page-b52play-hero h1 {
      font-size: 2.8em;
      margin-bottom: 15px;
      color: var(--page-b52play-primary-color);
      line-height: 1.2;
    }

    .page-b52play-hero p {
      font-size: 1.3em;
      margin-bottom: 30px;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
    }

    .page-b52play-btn {
      display: inline-block;
      background-color: var(--page-b52play-primary-color);
      color: var(--page-b52play-bg-dark);
      padding: 12px 30px;
      border-radius: 50px;
      text-decoration: none;
      font-weight: bold;
      font-size: 1.1em;
      transition: var(--page-b52play-transition);
      border: none;
      cursor: pointer;
    }

    .page-b52play-btn:hover {
      background-color: #e6a220; /* Darker primary */
      transform: translateY(-2px);
    }

    /* Nút đăng nhập/tải game nổi */
    .page-b52play-floating-btn {
      position: fixed;
      bottom: 20px;
      right: 20px;
      background-color: var(--page-b52play-accent-color);
      color: var(--page-b52play-text-light);
      padding: 15px 25px;
      border-radius: 50px;
      text-decoration: none;
      font-weight: bold;
      font-size: 1.2em;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
      z-index: 1000;
      transition: var(--page-b52play-transition);
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .page-b52play-floating-btn:hover {
      background-color: #c0392b; /* Darker accent */
      transform: scale(1.05);
    }

    /* Lưới sản phẩm/game */
    .page-b52play-game-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 30px;
      margin-top: 30px;
      padding: 0 15px;
    }

    .page-b52play-game-card {
      background-color: var(--page-b52play-bg-light);
      border-radius: var(--page-b52play-border-radius);
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
      overflow: hidden;
      text-align: center;
      transition: var(--page-b52play-transition);
      border: 1px solid #ddd;
    }

    .page-b52play-game-card-dark {
      background-color: #2e4157;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
      border: 1px solid #4a6a8c;
    }

    .page-b52play-game-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
    }
    .page-b52play-game-card-dark:hover {
      box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
    }


    .page-b52play-game-card img {
      width: 100%;
      height: 200px;
      object-fit: cover;
      display: block;
    }

    .page-b52play-game-card-content {
      padding: 20px;
    }

    .page-b52play-game-card-content h3 {
      font-size: 1.4em;
      margin-bottom: 10px;
      color: var(--page-b52play-secondary-color);
    }
    .page-b52play-game-card-dark h3 {
        color: var(--page-b52play-primary-color);
    }

    .page-b52play-game-card-content p {
      font-size: 0.95em;
      color: var(--page-b52play-text-dark);
      margin-bottom: 15px;
    }
    .page-b52play-game-card-dark p {
        color: var(--page-b52play-text-light);
    }

    .page-b52play-game-card-content a {
      color: var(--page-b52play-primary-color);
      text-decoration: none;
      font-weight: bold;
    }

    .page-b52play-game-card-content a:hover {
      text-decoration: underline;
    }

    /* Danh sách tính năng/lợi ích */
    .page-b52play-features-list {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 25px;
      list-style: none;
      padding: 0;
      margin-top: 30px;
    }

    .page-b52play-feature-item {
      background-color: var(--page-b52play-bg-light);
      padding: 25px;
      border-radius: var(--page-b52play-border-radius);
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
      flex: 1 1 calc(33% - 50px);
      min-width: 280px;
      text-align: left;
      transition: var(--page-b52play-transition);
      border-left: 5px solid var(--page-b52play-primary-color);
    }
    .page-b52play-section-dark .page-b52play-feature-item {
        background-color: #2e4157;
        color: var(--page-b52play-text-light);
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
        border-left-color: var(--page-b52play-primary-color);
    }

    .page-b52play-feature-item:hover {
      transform: translateY(-3px);
      box-shadow: 0 5px 15px rgba(0, 0, 0, 0.12);
    }

    .page-b52play-feature-item h3 {
      color: var(--page-b52play-primary-color);
      margin-top: 0;
      font-size: 1.6em;
    }
    .page-b52play-section-dark .page-b52play-feature-item h3 {
        color: var(--page-b52play-primary-color);
    }

    .page-b52play-feature-item p {
      font-size: 1em;
      color: var(--page-b52play-text-dark);
      margin-bottom: 0;
    }
    .page-b52play-section-dark .page-b52play-feature-item p {
        color: var(--page-b52play-text-light);
    }

    /* Phần đối tác/nhà cung cấp */
    .page-b52play-providers-list {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 20px;
      margin-top: 30px;
    }

    .page-b52play-provider-item {
      padding: 10px 20px;
      background-color: var(--page-b52play-bg-light);
      border: 1px solid #ddd;
      border-radius: var(--page-b52play-border-radius);
      font-weight: bold;
      color: var(--page-b52play-secondary-color);
      box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
      transition: var(--page-b52play-transition);
    }
    .page-b52play-section-dark .page-b52play-provider-item {
        background-color: #2e4157;
        border-color: #4a6a8c;
        color: var(--page-b52play-text-light);
    }

    .page-b52play-provider-item:hover {
      transform: translateY(-2px);
      box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    }

    /* Responsive */
    @media (max-width: 768px) {
      .page-b52play-hero h1 {
        font-size: 2.2em;
      }
      .page-b52play-hero p {
        font-size: 1.1em;
      }
      .page-b52play-game-grid {
        grid-template-columns: 1fr;
      }
      .page-b52play-feature-item {
        flex: 1 1 100%;
        min-width: unset;
      }
      .page-b52play-section {
        padding: 30px 0;
      }
      .page-b52play-section h2, .page-b52play-section h3 {
        font-size: 1.8em;
      }
      .page-b52play-floating-btn {
        bottom: 15px;
        right: 15px;
        padding: 12px 20px;
        font-size: 1em;
      }
    }

    @media (max-width: 480px) {
      .page-b52play-hero h1 {
        font-size: 1.8em;
      }
      .page-b52play-hero p {
        font-size: 1em;
      }
      .page-b52play-btn {
        padding: 10px 20px;
        font-size: 1em;
      }
      .page-b52play-floating-btn {
        font-size: 0.9em;
        padding: 10px 15px;
      }
    }