:root {
      --page-rikvip-primary-bg: #1a1a2e; /* Nền xanh đậm/tím */
      --page-rikvip-secondary-bg: #16213e; /* Xanh đậm hơn một chút */
      --page-rikvip-accent-color: #e94560; /* Đỏ/hồng cho điểm nhấn */
      --page-rikvip-text-color: #e0e0e0; /* Xám nhạt cho văn bản */
      --page-rikvip-heading-color: #ffffff; /* Trắng cho tiêu đề */
      --page-rikvip-button-bg: #0f3460; /* Xanh đậm hơn cho nút */
      --page-rikvip-button-text: #ffffff; /* Trắng cho văn bản nút */
      --page-rikvip-border-color: #533483; /* Viền tím */
      --page-rikvip-card-bg: #2b2b4a; /* Nền thẻ đậm hơn */
      --page-rikvip-shadow: rgba(0, 0, 0, 0.3);
    }

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

    .page-rikvip-section {
      padding: 30px 20px;
      max-width: 1200px;
      margin: 0 auto;
      text-align: center;
    }

    .page-rikvip-section-dark {
      background-color: var(--page-rikvip-secondary-bg);
    }

    .page-rikvip-title {
      color: var(--page-rikvip-heading-color);
      font-size: 2.5em;
      margin-bottom: 20px;
      text-shadow: 2px 2px 5px var(--page-rikvip-shadow);
    }

    .page-rikvip-subtitle {
      color: var(--page-rikvip-accent-color);
      font-size: 1.8em;
      margin-bottom: 15px;
    }

    .page-rikvip-text {
      font-size: 1.1em;
      margin-bottom: 20px;
    }

    .page-rikvip-button {
      display: inline-block;
      background-color: var(--page-rikvip-button-bg);
      color: var(--page-rikvip-button-text);
      padding: 12px 25px;
      border-radius: 30px;
      text-decoration: none;
      font-weight: bold;
      font-size: 1.1em;
      transition: background-color 0.3s ease, transform 0.2s ease;
      border: 2px solid var(--page-rikvip-accent-color);
    }

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

    .page-rikvip-banner {
      position: relative;
      text-align: center;
      padding-top: 20px; /* Đảm bảo banner không ở dưới cùng */
      padding-bottom: 20px;
      background-color: var(--page-rikvip-secondary-bg);
    }

    .page-rikvip-banner img {
      max-width: 100%;
      height: auto;
      border-radius: 10px;
      box-shadow: 0 5px 15px var(--page-rikvip-shadow);
      display: block; /* Đảm bảo hình ảnh được căn giữa */
      margin: 0 auto;
    }

    .page-rikvip-banner-text {
      color: var(--page-rikvip-heading-color);
      font-size: 1.2em;
      margin-top: 15px;
      font-weight: bold;
    }

    .page-rikvip-floating-button {
      position: fixed;
      bottom: 20px;
      right: 20px;
      z-index: 1000;
      background-color: var(--page-rikvip-accent-color);
      color: var(--page-rikvip-button-text);
      padding: 15px 25px;
      border-radius: 50px;
      font-size: 1.2em;
      font-weight: bold;
      text-align: center;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.4);
      animation: page-rikvip-pulse 2s infinite;
      text-decoration: none;
      border: none;
      cursor: pointer;
    }

    .page-rikvip-floating-button:hover {
      background-color: #ff6b82; /* Màu nhấn sáng hơn một chút */
      animation: none;
    }

    @keyframes page-rikvip-pulse {
      0% { transform: scale(1); }
      50% { transform: scale(1.05); }
      100% { transform: scale(1); }
    }

    .page-rikvip-game-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
      gap: 20px;
      margin-top: 30px;
    }

    .page-rikvip-game-card {
      background-color: var(--page-rikvip-card-bg);
      border-radius: 10px;
      padding: 15px;
      box-shadow: 0 4px 10px var(--page-rikvip-shadow);
      text-align: center;
      transition: transform 0.3s ease;
      border: 1px solid var(--page-rikvip-border-color);
    }

    .page-rikvip-game-card:hover {
      transform: translateY(-5px);
    }

    .page-rikvip-game-card img {
      max-width: 100px;
      height: auto;
      margin-bottom: 10px;
      border-radius: 5px;
    }

    .page-rikvip-game-card h3 {
      color: var(--page-rikvip-heading-color);
      font-size: 1.2em;
      margin-bottom: 5px;
    }

    .page-rikvip-game-card p {
      font-size: 0.9em;
      color: var(--page-rikvip-text-color);
    }

    .page-rikvip-list {
      list-style: none;
      padding: 0;
      text-align: left;
      margin-top: 20px;
    }

    .page-rikvip-list li {
      background-color: var(--page-rikvip-card-bg);
      margin-bottom: 10px;
      padding: 15px;
      border-radius: 8px;
      border-left: 5px solid var(--page-rikvip-accent-color);
      box-shadow: 0 2px 8px var(--page-rikvip-shadow);
      display: flex;
      align-items: center;
    }

    .page-rikvip-list li::before {
      content: '✔️';
      margin-right: 10px;
      color: var(--page-rikvip-accent-color);
      font-size: 1.2em;
    }

    .page-rikvip-faq-item {
      background-color: var(--page-rikvip-card-bg);
      border: 1px solid var(--page-rikvip-border-color);
      border-radius: 8px;
      margin-bottom: 15px;
      text-align: left;
    }

    .page-rikvip-faq-question {
      padding: 15px 20px;
      cursor: pointer;
      font-weight: bold;
      color: var(--page-rikvip-heading-color);
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 1.1em;
    }

    .page-rikvip-faq-question::after {
      content: '+';
      font-size: 1.5em;
      transition: transform 0.3s ease;
    }

    .page-rikvip-faq-question.active::after {
      content: '-';
      transform: rotate(180deg);
    }

    .page-rikvip-faq-answer {
      padding: 0 20px 15px;
      color: var(--page-rikvip-text-color);
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.4s ease-out;
    }

    .page-rikvip-faq-answer p {
      margin-bottom: 0;
    }

    .page-rikvip-note {
      background-color: rgba(233, 69, 96, 0.1);
      border-left: 5px solid var(--page-rikvip-accent-color);
      padding: 15px;
      margin-top: 30px;
      border-radius: 8px;
      text-align: left;
      color: var(--page-rikvip-text-color);
    }

    .page-rikvip-note strong {
      color: var(--page-rikvip-heading-color);
    }

    @media (max-width: 768px) {
      .page-rikvip-title {
        font-size: 2em;
      }
      .page-rikvip-subtitle {
        font-size: 1.5em;
      }
      .page-rikvip-section {
        padding: 20px 15px;
      }
      .page-rikvip-floating-button {
        bottom: 15px;
        right: 15px;
        padding: 12px 20px;
        font-size: 1em;
      }
      .page-rikvip-game-grid {
        grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
      }
      .page-rikvip-game-card img {
        max-width: 80px;
      }
    }