:root {
      --page-nhatvip888-primary: #007bff; /* Xanh dương */
      --page-nhatvip888-secondary: #6c757d; /* Xám */
      --page-nhatvip888-accent: #ffc107; /* Vàng */
      --page-nhatvip888-background-dark: #1a1a2e; /* Nền tối */
      --page-nhatvip888-background-light: #2c2c4a; /* Nền sáng hơn */
      --page-nhatvip888-text-light: #ffffff; /* Chữ sáng */
      --page-nhatvip888-text-dark: #e0e0e0; /* Chữ xám nhẹ */
      --page-nhatvip888-border-color: #444466; /* Màu viền */
      --page-nhatvip888-button-hover: #0056b3; /* Xanh dương đậm hơn */
    }

    .page-nhatvip888 {
      font-family: 'Arial', sans-serif;
      color: var(--page-nhatvip888-text-dark);
      background-color: var(--page-nhatvip888-background-dark);
      line-height: 1.6;
      padding: 20px 0;
    }

    .page-nhatvip888-container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 15px;
    }

    .page-nhatvip888-section {
      background-color: var(--page-nhatvip888-background-light);
      border-radius: 10px;
      padding: 30px;
      margin-bottom: 30px;
      box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    }

    .page-nhatvip888-section-dark {
      background-color: var(--page-nhatvip888-background-dark);
      border-radius: 10px;
      padding: 30px;
      margin-bottom: 30px;
      box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    }

    .page-nhatvip888-heading {
      color: var(--page-nhatvip888-primary);
      text-align: center;
      margin-bottom: 25px;
      font-size: 2.5em;
      font-weight: bold;
    }

    .page-nhatvip888-subheading {
      color: var(--page-nhatvip888-accent);
      margin-top: 25px;
      margin-bottom: 15px;
      font-size: 1.8em;
      border-bottom: 2px solid var(--page-nhatvip888-border-color);
      padding-bottom: 10px;
    }

    .page-nhatvip888-text {
      font-size: 1.1em;
      margin-bottom: 15px;
    }

    .page-nhatvip888-button {
      display: inline-block;
      background-color: var(--page-nhatvip888-primary);
      color: var(--page-nhatvip888-text-light);
      padding: 12px 25px;
      border-radius: 5px;
      text-decoration: none;
      font-weight: bold;
      transition: background-color 0.3s ease;
      font-size: 1.1em;
      border: none;
      cursor: pointer;
    }

    .page-nhatvip888-button:hover {
      background-color: var(--page-nhatvip888-button-hover);
      color: var(--page-nhatvip888-text-light); /* Đảm bảo màu chữ không đổi */
    }

    .page-nhatvip888-button-accent {
      background-color: var(--page-nhatvip888-accent);
      color: var(--page-nhatvip888-background-dark);
    }

    .page-nhatvip888-button-accent:hover {
      background-color: #e0a800; /* Màu vàng đậm hơn */
      color: var(--page-nhatvip888-background-dark);
    }

    .page-nhatvip888-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 25px;
      margin-top: 20px;
    }

    .page-nhatvip888-card {
      background-color: var(--page-nhatvip888-background-dark);
      border-radius: 8px;
      padding: 20px;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
      text-align: center;
      transition: transform 0.3s ease;
      border: 1px solid var(--page-nhatvip888-border-color);
    }

    .page-nhatvip888-card:hover {
      transform: translateY(-5px);
    }

    .page-nhatvip888-card-icon {
      width: 60px;
      height: 60px;
      margin-bottom: 15px;
      filter: drop-shadow(0 0 5px var(--page-nhatvip888-accent));
    }

    .page-nhatvip888-card-title {
      color: var(--page-nhatvip888-primary);
      font-size: 1.4em;
      margin-bottom: 10px;
    }

    .page-nhatvip888-list {
      list-style: none;
      padding-left: 0;
    }

    .page-nhatvip888-list li {
      margin-bottom: 10px;
      padding-left: 25px;
      position: relative;
      color: var(--page-nhatvip888-text-light);
    }

    .page-nhatvip888-list li::before {
      content: '✔';
      color: var(--page-nhatvip888-accent);
      position: absolute;
      left: 0;
      font-weight: bold;
    }

    .page-nhatvip888-image {
      max-width: 100%;
      height: auto;
      border-radius: 8px;
      margin-top: 20px;
      margin-bottom: 20px;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
    }

    .page-nhatvip888-flex-group {
      display: flex;
      flex-wrap: wrap;
      gap: 20px;
      align-items: center;
      justify-content: center;
      margin-top: 20px;
    }

    .page-nhatvip888-flex-group .page-nhatvip888-button {
      flex-grow: 1;
      text-align: center;
    }

    .page-nhatvip888-accordion-item {
      margin-bottom: 10px;
      border: 1px solid var(--page-nhatvip888-border-color);
      border-radius: 5px;
      overflow: hidden;
    }

    .page-nhatvip888-accordion-header {
      background-color: var(--page-nhatvip888-background-dark);
      padding: 15px 20px;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      color: var(--page-nhatvip888-text-light);
      font-weight: bold;
      font-size: 1.1em;
    }

    .page-nhatvip888-accordion-header:hover {
      background-color: #3a3a5a;
    }

    .page-nhatvip888-accordion-icon {
      font-size: 1.2em;
      transition: transform 0.3s ease;
    }

    .page-nhatvip888-accordion-content {
      padding: 15px 20px;
      background-color: var(--page-nhatvip888-background-light);
      color: var(--page-nhatvip888-text-dark);
      display: none;
    }

    .page-nhatvip888-accordion-item.active .page-nhatvip888-accordion-content {
      display: block;
    }

    .page-nhatvip888-accordion-item.active .page-nhatvip888-accordion-icon {
      transform: rotate(180deg);
    }

    .page-nhatvip888-floating-ad {
      position: fixed;
      bottom: 20px;
      right: 20px;
      background-color: var(--page-nhatvip888-accent);
      color: var(--page-nhatvip888-background-dark);
      padding: 15px 20px;
      border-radius: 10px;
      box-shadow: 0 5px 15px rgba(0, 0, 0, 0.4);
      z-index: 1000;
      display: flex;
      align-items: center;
      gap: 10px;
      animation: page-nhatvip888-pulse 2s infinite;
      cursor: pointer;
      text-decoration: none;
      font-weight: bold;
      font-size: 1.1em;
    }

    .page-nhatvip888-floating-ad:hover {
      background-color: #e0a800;
    }

    .page-nhatvip888-floating-ad-close {
      background: none;
      border: none;
      color: var(--page-nhatvip888-background-dark);
      font-size: 1.5em;
      cursor: pointer;
      margin-left: 10px;
      line-height: 1;
      padding: 0;
    }

    @keyframes page-nhatvip888-pulse {
      0% { transform: scale(1); }
      50% { transform: scale(1.05); }
      100% { transform: scale(1); }
    }

    @media (max-width: 768px) {
      .page-nhatvip888-heading {
        font-size: 2em;
      }
      .page-nhatvip888-subheading {
        font-size: 1.5em;
      }
      .page-nhatvip888-section {
        padding: 20px;
      }
      .page-nhatvip888-grid {
        grid-template-columns: 1fr;
      }
      .page-nhatvip888-flex-group {
        flex-direction: column;
      }
      .page-nhatvip888-floating-ad {
        bottom: 10px;
        right: 10px;
        left: 10px;
        justify-content: center;
        text-align: center;
        font-size: 1em;
      }
      .page-nhatvip888-floating-ad-close {
        position: absolute;
        top: 5px;
        right: 5px;
        font-size: 1.2em;
      }
    }