/* Tổng quan */
    :root {
      --page-rewardgame-primary-bg: #1a1a2e; /* Màu nền chính */
      --page-rewardgame-secondary-bg: #16213e; /* Màu nền phụ */
      --page-rewardgame-accent-color: #e94560; /* Màu nhấn chính */
      --page-rewardgame-text-color: #e0e0e0; /* Màu chữ chính */
      --page-rewardgame-light-text: #ffffff; /* Màu chữ sáng */
      --page-rewardgame-border-color: #0f3460; /* Màu đường viền */
      --page-rewardgame-button-bg: #e94560; /* Màu nền nút */
      --page-rewardgame-button-hover: #ff6a85; /* Màu nền nút khi hover */
      --page-rewardgame-card-bg: #0f3460; /* Màu nền thẻ */
      --page-rewardgame-shadow: rgba(0, 0, 0, 0.4); /* Màu đổ bóng */
    }

    .page-rewardgame {
      font-family: 'Arial', sans-serif;
      color: var(--page-rewardgame-text-color);
      background-color: var(--page-rewardgame-primary-bg);
      line-height: 1.6;
      padding-bottom: 80px; /* Để chừa chỗ cho nút nổi */
    }

    .page-rewardgame .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 15px;
    }

    /* Tiêu đề */
    .page-rewardgame h1, .page-rewardgame h2, .page-rewardgame h3 {
      color: var(--page-rewardgame-light-text);
      text-align: center;
      margin-bottom: 25px;
      line-height: 1.3;
    }

    .page-rewardgame h1 {
      font-size: 2.2em;
      margin-top: 30px;
      text-shadow: 0 0 10px rgba(233, 69, 96, 0.7);
    }

    .page-rewardgame h2 {
      font-size: 1.8em;
      color: var(--page-rewardgame-accent-color);
      border-bottom: 2px solid var(--page-rewardgame-border-color);
      padding-bottom: 10px;
      margin-top: 40px;
    }

    .page-rewardgame h3 {
      font-size: 1.4em;
      color: var(--page-rewardgame-light-text);
    }

    /* Đoạn văn */
    .page-rewardgame p {
      margin-bottom: 15px;
      text-align: justify;
    }

    /* Nút chung */
    .page-rewardgame .btn {
      display: inline-block;
      background-color: var(--page-rewardgame-button-bg);
      color: var(--page-rewardgame-light-text);
      padding: 12px 25px;
      border-radius: 8px;
      text-decoration: none;
      font-weight: bold;
      transition: background-color 0.3s ease, transform 0.2s ease;
      border: none;
      cursor: pointer;
      font-size: 1em;
    }

    .page-rewardgame .btn:hover {
      background-color: var(--page-rewardgame-button-hover);
      transform: translateY(-2px);
    }

    /* Banner */
    .page-rewardgame__banner {
      width: 100%;
      max-height: 300px;
      overflow: hidden;
      display: flex;
      justify-content: center;
      align-items: center;
      margin-bottom: 20px;
      position: relative;
    }

    .page-rewardgame__banner img {
      width: 100%;
      height: auto;
      display: block;
      object-fit: cover;
      object-position: center;
    }
    
    .page-rewardgame__banner-text {
        position: absolute;
        bottom: 10px; /* Đặt văn bản ở dưới banner */
        left: 50%;
        transform: translateX(-50%);
        color: var(--page-rewardgame-light-text);
        font-size: 1.5em;
        font-weight: bold;
        text-shadow: 0 0 8px var(--page-rewardgame-shadow);
        background-color: rgba(0, 0, 0, 0.5);
        padding: 5px 15px;
        border-radius: 5px;
        white-space: nowrap;
    }

    /* Nút nổi đăng nhập */
    .page-rewardgame__floating-btn {
      position: fixed;
      bottom: 20px;
      left: 50%;
      transform: translateX(-50%);
      background-color: var(--page-rewardgame-accent-color);
      color: var(--page-rewardgame-light-text);
      padding: 15px 30px;
      border-radius: 50px;
      font-size: 1.1em;
      font-weight: bold;
      box-shadow: 0 5px 15px var(--page-rewardgame-shadow);
      z-index: 1000;
      animation: page-rewardgame-pulse 2s infinite;
      text-decoration: none; /* Đảm bảo là một liên kết */
      text-align: center;
      min-width: 280px;
      white-space: nowrap;
    }

    .page-rewardgame__floating-btn:hover {
      background-color: var(--page-rewardgame-button-hover);
      animation: none;
      transform: translateX(-50%) translateY(-3px);
    }

    @keyframes page-rewardgame-pulse {
      0% { transform: translateX(-50%) scale(1); box-shadow: 0 5px 15px var(--page-rewardgame-shadow); }
      50% { transform: translateX(-50%) scale(1.03); box-shadow: 0 8px 20px var(--page-rewardgame-shadow); }
      100% { transform: translateX(-50%) scale(1); box-shadow: 0 5px 15px var(--page-rewardgame-shadow); }
    }

    /* Lưới sản phẩm game */
    .page-rewardgame__game-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
      gap: 20px;
      margin-top: 30px;
      margin-bottom: 40px;
      justify-content: center;
    }

    .page-rewardgame__game-card {
      background-color: var(--page-rewardgame-card-bg);
      border-radius: 12px;
      overflow: hidden;
      text-align: center;
      box-shadow: 0 4px 15px var(--page-rewardgame-shadow);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      display: flex;
      flex-direction: column;
    }

    .page-rewardgame__game-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 8px 25px var(--page-rewardgame-shadow);
    }

    .page-rewardgame__game-card img {
      width: 100%;
      height: 120px;
      object-fit: cover;
      border-bottom: 1px solid var(--page-rewardgame-border-color);
    }

    .page-rewardgame__game-card-content {
      padding: 15px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .page-rewardgame__game-card h3 {
      margin-top: 0;
      margin-bottom: 10px;
      font-size: 1.2em;
      color: var(--page-rewardgame-accent-color);
    }
    
    .page-rewardgame__game-card h3 a {
        color: var(--page-rewardgame-accent-color);
        text-decoration: none;
    }
    
    .page-rewardgame__game-card h3 a:hover {
        text-decoration: underline;
    }

    .page-rewardgame__game-card p {
      font-size: 0.9em;
      color: var(--page-rewardgame-text-color);
      margin-bottom: 15px;
      flex-grow: 1;
    }

    .page-rewardgame__game-card .btn {
      width: 100%;
      padding: 10px;
      font-size: 0.95em;
    }

    /* Danh sách tính năng/lợi ích */
    .page-rewardgame__features-list {
      list-style: none;
      padding: 0;
      margin-top: 20px;
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 15px;
    }

    .page-rewardgame__features-list li {
      background-color: var(--page-rewardgame-card-bg);
      padding: 15px 20px;
      border-radius: 8px;
      display: flex;
      align-items: center;
      gap: 10px;
      box-shadow: 0 2px 10px var(--page-rewardgame-shadow);
      font-size: 1.05em;
    }

    .page-rewardgame__features-list li::before {
      content: '✔';
      color: var(--page-rewardgame-accent-color);
      font-weight: bold;
      font-size: 1.2em;
    }

    /* Phương thức thanh toán & Nhà cung cấp */
    .page-rewardgame__logo-grid {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 20px;
      margin-top: 30px;
      margin-bottom: 40px;
    }

    .page-rewardgame__logo-item {
      background-color: var(--page-rewardgame-card-bg);
      padding: 15px;
      border-radius: 8px;
      box-shadow: 0 2px 10px var(--page-rewardgame-shadow);
      display: flex;
      align-items: center;
      justify-content: center;
      min-width: 100px;
      height: 60px;
      transition: transform 0.2s ease;
    }

    .page-rewardgame__logo-item:hover {
      transform: scale(1.05);
    }

    .page-rewardgame__logo-item img {
      max-width: 100%;
      max-height: 100%;
      object-fit: contain;
    }
    
    /* FAQ */
    .page-rewardgame__faq-item {
      background-color: var(--page-rewardgame-card-bg);
      border-radius: 8px;
      margin-bottom: 15px;
      overflow: hidden;
      box-shadow: 0 2px 10px var(--page-rewardgame-shadow);
    }

    .page-rewardgame__faq-question {
      padding: 15px 20px;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-weight: bold;
      color: var(--page-rewardgame-accent-color);
      font-size: 1.1em;
      border-bottom: 1px solid var(--page-rewardgame-border-color);
    }
    
    .page-rewardgame__faq-question:hover {
        background-color: var(--page-rewardgame-secondary-bg);
    }

    .page-rewardgame__faq-question .icon {
      font-size: 1.5em;
      transition: transform 0.3s ease;
    }

    .page-rewardgame__faq-question.active .icon {
      transform: rotate(180deg);
    }

    .page-rewardgame__faq-answer {
      padding: 0 20px;
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.5s ease-out, padding 0.5s ease-out;
      color: var(--page-rewardgame-text-color);
    }

    .page-rewardgame__faq-answer.active {
      max-height: 200px; /* Adjust as needed */
      padding: 15px 20px;
    }
    
    /* Xếp hạng game */
    .page-rewardgame__ranking-list {
        list-style: none;
        padding: 0;
        margin-top: 20px;
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
        gap: 10px;
        text-align: center;
    }

    .page-rewardgame__ranking-list li {
        background-color: var(--page-rewardgame-card-bg);
        padding: 10px 15px;
        border-radius: 6px;
        box-shadow: 0 2px 8px var(--page-rewardgame-shadow);
        font-weight: bold;
        color: var(--page-rewardgame-light-text);
        font-size: 1em;
        transition: background-color 0.3s ease;
    }
    
    .page-rewardgame__ranking-list li:nth-child(1) { background-color: #ffd700; color: #333; } /* Gold */
    .page-rewardgame__ranking-list li:nth-child(2) { background-color: #c0c0c0; color: #333; } /* Silver */
    .page-rewardgame__ranking-list li:nth-child(3) { background-color: #cd7f32; color: #333; } /* Bronze */
    .page-rewardgame__ranking-list li:nth-child(1):hover,
    .page-rewardgame__ranking-list li:nth-child(2):hover,
    .page-rewardgame__ranking-list li:nth-child(3):hover {
        transform: translateY(-3px);
        box-shadow: 0 5px 15px rgba(0,0,0,0.6);
    }


    /* Responsive */
    @media (max-width: 768px) {
      .page-rewardgame h1 {
        font-size: 1.8em;
      }
      .page-rewardgame h2 {
        font-size: 1.5em;
      }
      .page-rewardgame h3 {
        font-size: 1.1em;
      }
      .page-rewardgame__game-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
      }
      .page-rewardgame__floating-btn {
        width: calc(100% - 40px);
        font-size: 1em;
        padding: 12px 20px;
      }
      .page-rewardgame__banner-text {
          font-size: 1.2em;
          padding: 3px 10px;
      }
      .page-rewardgame__logo-item {
        min-width: 80px;
        height: 50px;
      }
    }

    @media (max-width: 480px) {
      .page-rewardgame h1 {
        font-size: 1.5em;
      }
      .page-rewardgame h2 {
        font-size: 1.3em;
      }
      .page-rewardgame__game-grid {
        grid-template-columns: 1fr; /* Stack cards on very small screens */
      }
      .page-rewardgame__features-list {
        grid-template-columns: 1fr;
      }
      .page-rewardgame__floating-btn {
        font-size: 0.9em;
        padding: 10px 15px;
      }
    }