/* CSS cho trang RIKVIP */
    :root {
      --page-rikvip-primary-color: #FFD700; /* Vàng kim */
      --page-rikvip-secondary-color: #DAA520; /* Vàng đậm hơn */
      --page-rikvip-dark-bg: #1a1a1a; /* Nền tối */
      --page-rikvip-light-text: #f5f5f5; /* Chữ sáng */
      --page-rikvip-accent-color: #E60000; /* Đỏ nhấn */
      --page-rikvip-button-hover: #FFC400;
    }

    .page-rikvip {
      font-family: 'Arial', sans-serif;
      color: var(--page-rikvip-light-text);
      background-color: var(--page-rikvip-dark-bg);
      line-height: 1.6;
      margin: 0;
      padding: 0;
    }

    .page-rikvip-container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 1rem;
    }

    /* Banner Section */
    .page-rikvip-hero {
      position: relative;
      text-align: center;
      padding: 2rem 1rem;
      background: linear-gradient(135deg, var(--page-rikvip-dark-bg), #333);
      border-bottom: 5px solid var(--page-rikvip-primary-color);
    }

    .page-rikvip-hero-image {
      width: 100%;
      max-width: 800px; /* Limit banner width */
      height: auto;
      display: block;
      margin: 0 auto 1.5rem auto;
      border-radius: 10px;
      box-shadow: 0 0 20px rgba(0, 0, 0, 0.5);
    }

    .page-rikvip-hero h1 {
      font-size: 2.5rem;
      color: var(--page-rikvip-primary-color);
      margin-bottom: 1rem;
      text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.7);
    }
    @media (min-width: 768px) {
      .page-rikvip-hero h1 {
        font-size: 3.5rem;
      }
    }

    .page-rikvip-hero p {
      font-size: 1.1rem;
      margin-bottom: 2rem;
      color: var(--page-rikvip-light-text);
    }

    /* Floating Login Button */
    .page-rikvip-floating-button {
      position: fixed;
      bottom: 20px;
      right: 20px;
      background-color: var(--page-rikvip-accent-color);
      color: var(--page-rikvip-light-text);
      padding: 15px 25px;
      border-radius: 50px;
      text-decoration: none;
      font-weight: bold;
      font-size: 1.2rem;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.4);
      z-index: 1000;
      transition: background-color 0.3s ease, transform 0.3s ease;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .page-rikvip-floating-button:hover {
      background-color: var(--page-rikvip-button-hover);
      transform: translateY(-3px);
      color: var(--page-rikvip-dark-bg);
    }

    .page-rikvip-floating-button svg {
      fill: var(--page-rikvip-light-text);
      transition: fill 0.3s ease;
    }

    .page-rikvip-floating-button:hover svg {
      fill: var(--page-rikvip-dark-bg);
    }

    /* Sections */
    .page-rikvip-section {
      padding: 3rem 1rem;
      margin-bottom: 1rem;
      background-color: #2a2a2a;
      border-radius: 10px;
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    }

    .page-rikvip-section h2 {
      text-align: center;
      font-size: 2rem;
      color: var(--page-rikvip-primary-color);
      margin-bottom: 2rem;
      position: relative;
      padding-bottom: 10px;
    }

    .page-rikvip-section h2::after {
      content: '';
      position: absolute;
      left: 50%;
      bottom: 0;
      transform: translateX(-50%);
      width: 80px;
      height: 4px;
      background-color: var(--page-rikvip-secondary-color);
      border-radius: 2px;
    }

    .page-rikvip-section p {
      margin-bottom: 1rem;
      color: var(--page-rikvip-light-text);
    }

    /* Game Categories */
    .page-rikvip-game-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
      gap: 1.5rem;
      margin-top: 2rem;
    }
    @media (min-width: 768px) {
      .page-rikvip-game-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
      }
    }

    .page-rikvip-game-card {
      background-color: #333;
      border-radius: 8px;
      overflow: hidden;
      text-align: center;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.5);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .page-rikvip-game-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 6px 15px rgba(0, 0, 0, 0.7);
    }

    .page-rikvip-game-card img {
      width: 100%;
      height: 120px;
      object-fit: cover;
      display: block;
      border-bottom: 2px solid var(--page-rikvip-secondary-color);
    }
    @media (min-width: 768px) {
      .page-rikvip-game-card img {
        height: 150px;
      }
    }

    .page-rikvip-game-card h3 {
      font-size: 1.2rem;
      color: var(--page-rikvip-primary-color);
      padding: 1rem 0.5rem;
      margin: 0;
    }

    .page-rikvip-game-card a {
      color: var(--page-rikvip-primary-color);
      text-decoration: none;
      display: block;
      padding: 10px 0;
      background-color: #444;
      border-top: 1px solid #555;
      transition: background-color 0.3s ease;
    }

    .page-rikvip-game-card a:hover {
      background-color: var(--page-rikvip-secondary-color);
      color: var(--page-rikvip-dark-bg);
    }

    /* Download Section */
    .page-rikvip-download-options {
      display: flex;
      flex-direction: column;
      gap: 1.5rem;
      margin-top: 2rem;
    }
    @media (min-width: 768px) {
      .page-rikvip-download-options {
        flex-direction: row;
        justify-content: center;
      }
    }

    .page-rikvip-download-card {
      background-color: #333;
      border-radius: 8px;
      padding: 1.5rem;
      text-align: center;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.5);
      flex: 1;
      min-width: 280px;
    }

    .page-rikvip-download-card img {
      width: 80px;
      height: 80px;
      margin-bottom: 1rem;
    }

    .page-rikvip-download-card h3 {
      color: var(--page-rikvip-primary-color);
      font-size: 1.5rem;
      margin-bottom: 1rem;
    }

    .page-rikvip-download-card p {
      color: var(--page-rikvip-light-text);
      margin-bottom: 1.5rem;
    }

    .page-rikvip-download-card .page-rikvip-button {
      display: inline-block;
      background-color: var(--page-rikvip-accent-color);
      color: var(--page-rikvip-light-text);
      padding: 12px 25px;
      border-radius: 5px;
      text-decoration: none;
      font-weight: bold;
      transition: background-color 0.3s ease;
    }

    .page-rikvip-download-card .page-rikvip-button:hover {
      background-color: var(--page-rikvip-button-hover);
      color: var(--page-rikvip-dark-bg);
    }

    /* Promotions Section */
    .page-rikvip-promo-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 1.5rem;
      margin-top: 2rem;
    }

    .page-rikvip-promo-card {
      background-color: #333;
      border-radius: 8px;
      overflow: hidden;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.5);
      display: flex;
      flex-direction: column;
    }

    .page-rikvip-promo-card img {
      width: 100%;
      height: 180px;
      object-fit: cover;
      border-bottom: 2px solid var(--page-rikvip-secondary-color);
    }

    .page-rikvip-promo-content {
      padding: 1.5rem;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .page-rikvip-promo-content h3 {
      color: var(--page-rikvip-primary-color);
      font-size: 1.3rem;
      margin-bottom: 0.8rem;
    }

    .page-rikvip-promo-content p {
      color: var(--page-rikvip-light-text);
      font-size: 0.95rem;
      margin-bottom: 1.5rem;
    }

    .page-rikvip-promo-content .page-rikvip-button {
      display: inline-block;
      background-color: var(--page-rikvip-accent-color);
      color: var(--page-rikvip-light-text);
      padding: 10px 20px;
      border-radius: 5px;
      text-decoration: none;
      font-weight: bold;
      text-align: center;
      transition: background-color 0.3s ease;
      align-self: flex-start;
    }

    .page-rikvip-promo-content .page-rikvip-button:hover {
      background-color: var(--page-rikvip-button-hover);
      color: var(--page-rikvip-dark-bg);
    }

    /* FAQ Section */
    .page-rikvip-faq-item {
      background-color: #333;
      border-radius: 8px;
      margin-bottom: 1rem;
      overflow: hidden;
    }

    .page-rikvip-faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 1rem 1.5rem;
      background-color: #444;
      color: var(--page-rikvip-primary-color);
      font-weight: bold;
      cursor: pointer;
      font-size: 1.1rem;
      transition: background-color 0.3s ease;
    }

    .page-rikvip-faq-question:hover {
      background-color: #555;
    }

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

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

    .page-rikvip-faq-question svg {
      width: 20px;
      height: 20px;
      fill: var(--page-rikvip-primary-color);
      transition: transform 0.3s ease;
    }
    .page-rikvip-faq-question.active svg {
      fill: var(--page-rikvip-dark-bg);
    }

    .page-rikvip-faq-answer {
      padding: 0 1.5rem;
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.5s ease-out, padding 0.5s ease-out;
      color: var(--page-rikvip-light-text);
    }

    .page-rikvip-faq-answer.open {
      max-height: 200px; /* Adjust as needed */
      padding: 1rem 1.5rem;
    }

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

    /* General Link Styling */
    .page-rikvip a {
      color: var(--page-rikvip-primary-color);
      text-decoration: none;
      transition: color 0.3s ease;
    }

    .page-rikvip a:hover {
      color: var(--page-rikvip-secondary-color);
    }

    /* Utility classes */
    .page-rikvip-text-center {
      text-align: center;
    }
    .page-rikvip-mt-4 {
      margin-top: 2rem;
    }