:root {
      --page-okvip-primary-color: #007bff; /* Xanh dương */
      --page-okvip-secondary-color: #6c757d; /* Xám */
      --page-okvip-accent-color: #dc3545; /* Đỏ */
      --page-okvip-text-color: #212529; /* Đen đậm */
      --page-okvip-background-color: #f8f9fa; /* Xám nhạt */
      --page-okvip-card-background: #ffffff; /* Trắng */
      --page-okvip-border-color: #e9ecef; /* Xám viền */
      --page-okvip-link-color: #0056b3; /* Xanh dương đậm hơn */
    }

    .page-okvip-container {
      font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
      line-height: 1.6;
      color: var(--page-okvip-text-color);
      background-color: var(--page-okvip-background-color);
      padding: 20px 0;
    }

    .page-okvip-section {
      padding: 40px 20px;
      margin-bottom: 20px;
      background-color: var(--page-okvip-card-background);
      border-radius: 8px;
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
      max-width: 1200px;
      margin-left: auto;
      margin-right: auto;
    }

    .page-okvip-section:nth-child(even) {
      background-color: #f1f3f5; /* Màu nền xen kẽ để dễ nhìn */
    }

    .page-okvip-header-hero {
      background: linear-gradient(135deg, #1a2a6c, #b21f1f, #fdbb2d); /* Màu sắc mạnh mẽ, hấp dẫn */
      color: #ffffff;
      padding: 60px 20px;
      text-align: center;
      border-radius: 8px;
      margin-bottom: 30px;
      max-width: 1200px;
      margin-left: auto;
      margin-right: auto;
      box-shadow: 0 6px 15px rgba(0, 0, 0, 0.15);
    }

    .page-okvip-header-hero h1 {
      font-size: 2.8em;
      margin-bottom: 15px;
      line-height: 1.2;
      text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
    }

    .page-okvip-header-hero p {
      font-size: 1.2em;
      margin-bottom: 30px;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
    }

    .page-okvip-button {
      display: inline-block;
      background-color: var(--page-okvip-accent-color);
      color: #ffffff;
      padding: 12px 25px;
      border-radius: 50px;
      text-decoration: none;
      font-weight: bold;
      font-size: 1.1em;
      transition: background-color 0.3s ease, transform 0.2s ease;
      border: none;
      cursor: pointer;
    }

    .page-okvip-button:hover {
      background-color: #e62e3d;
      transform: translateY(-2px);
    }

    .page-okvip-button-secondary {
      background-color: var(--page-okvip-primary-color);
    }

    .page-okvip-button-secondary:hover {
      background-color: var(--page-okvip-link-color);
    }

    .page-okvip-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 25px;
    }

    .page-okvip-card {
      background-color: var(--page-okvip-card-background);
      border: 1px solid var(--page-okvip-border-color);
      border-radius: 8px;
      padding: 25px;
      text-align: center;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
    }

    .page-okvip-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 6px 15px rgba(0, 0, 0, 0.1);
    }

    .page-okvip-card img {
      max-width: 100px;
      height: auto;
      margin-bottom: 15px;
      filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.1));
    }

    .page-okvip-card h3 {
      font-size: 1.5em;
      color: var(--page-okvip-primary-color);
      margin-bottom: 10px;
    }

    .page-okvip-card p {
      font-size: 0.95em;
      color: var(--page-okvip-secondary-color);
    }

    .page-okvip-steps {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 30px;
      margin-top: 30px;
    }

    .page-okvip-step-item {
      flex: 1 1 300px;
      background-color: var(--page-okvip-card-background);
      border: 1px solid var(--page-okvip-border-color);
      border-radius: 8px;
      padding: 25px;
      text-align: center;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
      transition: transform 0.3s ease;
      position: relative;
      padding-top: 60px; /* Để chỗ cho số bước */
    }

    .page-okvip-step-item::before {
      content: attr(data-step);
      position: absolute;
      top: -20px;
      left: 50%;
      transform: translateX(-50%);
      background-color: var(--page-okvip-primary-color);
      color: #ffffff;
      border-radius: 50%;
      width: 50px;
      height: 50px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.8em;
      font-weight: bold;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
    }

    .page-okvip-step-item h3 {
      color: var(--page-okvip-primary-color);
      margin-bottom: 10px;
    }

    .page-okvip-game-category {
      background-color: var(--page-okvip-card-background);
      border: 1px solid var(--page-okvip-border-color);
      border-radius: 8px;
      overflow: hidden;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
      transition: transform 0.3s ease;
    }

    .page-okvip-game-category:hover {
      transform: translateY(-5px);
    }

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

    .page-okvip-game-category-content {
      padding: 20px;
    }

    .page-okvip-game-category-content h3 {
      font-size: 1.4em;
      color: var(--page-okvip-primary-color);
      margin-bottom: 10px;
    }

    .page-okvip-game-category-content p {
      font-size: 0.9em;
      color: var(--page-okvip-secondary-color);
      margin-bottom: 15px;
    }

    .page-okvip-faq-item {
      background-color: var(--page-okvip-card-background);
      border: 1px solid var(--page-okvip-border-color);
      border-radius: 8px;
      margin-bottom: 15px;
      overflow: hidden;
    }

    .page-okvip-faq-question {
      padding: 18px 25px;
      cursor: pointer;
      font-weight: bold;
      color: var(--page-okvip-text-color);
      display: flex;
      justify-content: space-between;
      align-items: center;
      background-color: #eaf1f8;
      border-bottom: 1px solid var(--page-okvip-border-color);
    }

    .page-okvip-faq-question:hover {
      background-color: #e0eaf7;
    }

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

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

    .page-okvip-faq-answer {
      padding: 0 25px;
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.4s ease-out, padding 0.4s ease-out;
      color: var(--page-okvip-secondary-color);
      font-size: 0.95em;
    }

    .page-okvip-faq-answer p {
      padding: 15px 0;
      margin: 0;
    }

    .page-okvip-cta-banner {
      background: linear-gradient(45deg, var(--page-okvip-accent-color), #ffc107);
      color: #ffffff;
      padding: 50px 20px;
      text-align: center;
      border-radius: 8px;
      margin-top: 30px;
      max-width: 1200px;
      margin-left: auto;
      margin-right: auto;
      box-shadow: 0 6px 15px rgba(0, 0, 0, 0.15);
    }

    .page-okvip-cta-banner h2 {
      font-size: 2.5em;
      margin-bottom: 15px;
      text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.2);
    }

    .page-okvip-cta-banner p {
      font-size: 1.2em;
      margin-bottom: 30px;
      max-width: 700px;
      margin-left: auto;
      margin-right: auto;
    }

    .page-okvip-floating-promo {
      position: fixed;
      bottom: 20px;
      right: 20px;
      background-color: var(--page-okvip-accent-color);
      color: #ffffff;
      padding: 10px 15px;
      border-radius: 50px;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
      z-index: 1000;
      display: flex;
      align-items: center;
      font-weight: bold;
      text-decoration: none;
      transition: background-color 0.3s ease, transform 0.2s ease;
    }

    .page-okvip-floating-promo:hover {
      background-color: #e62e3d;
      transform: scale(1.05);
    }

    .page-okvip-floating-promo img {
      width: 30px;
      height: 30px;
      margin-right: 10px;
      filter: invert(1); /* Biến icon thành màu trắng */
    }

    /* Responsive */
    @media (max-width: 768px) {
      .page-okvip-header-hero h1 {
        font-size: 2em;
      }
      .page-okvip-header-hero p {
        font-size: 1em;
      }
      .page-okvip-section {
        padding: 30px 15px;
      }
      .page-okvip-grid {
        grid-template-columns: 1fr;
      }
      .page-okvip-steps {
        flex-direction: column;
      }
      .page-okvip-step-item {
        flex: 1 1 auto;
        max-width: 100%;
      }
      .page-okvip-cta-banner h2 {
        font-size: 1.8em;
      }
      .page-okvip-cta-banner p {
        font-size: 1em;
      }
      .page-okvip-floating-promo {
        bottom: 15px;
        right: 15px;
        padding: 8px 12px;
        font-size: 0.9em;
      }
      .page-okvip-floating-promo img {
        width: 25px;
        height: 25px;
      }
    }