:root {
      --page-hi88vip6-primary-color: #f7b731; /* Vàng cam */
      --page-hi88vip6-secondary-color: #333; /* Xám đậm */
      --page-hi88vip6-background-color: #1a1a1a; /* Nền tối */
      --page-hi88vip6-text-color: #f0f0f0; /* Trắng ngà */
      --page-hi88vip6-accent-color: #e74c3c; /* Đỏ nhấn */
      --page-hi88vip6-border-radius: 8px;
      --page-hi88vip6-spacing-unit: 16px;
    }

    .page-hi88vip6 {
      font-family: 'Arial', sans-serif;
      color: var(--page-hi88vip6-text-color);
      background-color: var(--page-hi88vip6-background-color);
      line-height: 1.6;
      padding-bottom: 80px; /* Dành chỗ cho nút nổi */
    }

    .page-hi88vip6 a {
      color: var(--page-hi88vip6-primary-color);
      text-decoration: none;
    }

    .page-hi88vip6 a:hover {
      text-decoration: underline;
    }

    .page-hi88vip6 .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 var(--page-hi88vip6-spacing-unit);
    }

    /* Banner Section */
    .page-hi88vip6-hero {
      position: relative;
      background-color: #000;
      text-align: center;
      padding: 0;
      overflow: hidden;
    }

    .page-hi88vip6-hero-image {
      width: 100%;
      height: 250px; /* Chiều cao banner mặc định cho di động */
      object-fit: cover;
      display: block;
    }

    .page-hi88vip6-hero-content {
      position: relative;
      background: rgba(0, 0, 0, 0.6);
      padding: var(--page-hi88vip6-spacing-unit);
      margin-top: -5px; /* Kéo lên một chút để banner và text liền mạch */
    }

    .page-hi88vip6-hero h1 {
      color: var(--page-hi88vip6-primary-color);
      font-size: 2.2em;
      margin-bottom: 10px;
      line-height: 1.2;
    }

    .page-hi88vip6-hero p {
      font-size: 1.1em;
      margin-bottom: var(--page-hi88vip6-spacing-unit);
    }

    .page-hi88vip6-btn {
      display: inline-block;
      background-color: var(--page-hi88vip6-accent-color);
      color: #fff;
      padding: 12px 25px;
      border-radius: var(--page-hi88vip6-border-radius);
      font-weight: bold;
      text-transform: uppercase;
      transition: background-color 0.3s ease;
      cursor: pointer;
    }

    .page-hi88vip6-btn:hover {
      background-color: #c0392b; /* Đỏ sẫm hơn */
      text-decoration: none;
    }

    /* Floating Login Button */
    .page-hi88vip6-floating-btn {
      position: fixed;
      bottom: 0;
      left: 0;
      width: 100%;
      background-color: var(--page-hi88vip6-primary-color);
      padding: 15px var(--page-hi88vip6-spacing-unit);
      text-align: center;
      box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.3);
      z-index: 1000;
      box-sizing: border-box;
    }

    .page-hi88vip6-floating-btn a {
      display: block;
      background-color: var(--page-hi88vip6-accent-color);
      color: #fff;
      padding: 15px 20px;
      border-radius: var(--page-hi88vip6-border-radius);
      font-size: 1.2em;
      font-weight: bold;
      text-transform: uppercase;
      transition: background-color 0.3s ease;
    }

    .page-hi88vip6-floating-btn a:hover {
      background-color: #c0392b;
      text-decoration: none;
    }

    /* Section Styling */
    .page-hi88vip6-section {
      padding: var(--page-hi88vip6-spacing-unit) 0;
      margin-bottom: var(--page-hi88vip6-spacing-unit);
    }

    .page-hi88vip6-section h2 {
      color: var(--page-hi88vip6-primary-color);
      font-size: 1.8em;
      text-align: center;
      margin-bottom: var(--page-hi88vip6-spacing-unit) * 1.5;
      position: relative;
      padding-bottom: 10px;
    }

    .page-hi88vip6-section h2::after {
      content: '';
      position: absolute;
      left: 50%;
      bottom: 0;
      transform: translateX(-50%);
      width: 60px;
      height: 3px;
      background-color: var(--page-hi88vip6-accent-color);
    }

    .page-hi88vip6-section p {
      margin-bottom: var(--page-hi88vip6-spacing-unit);
      text-align: justify;
    }

    /* Game Categories */
    .page-hi88vip6-game-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
      gap: var(--page-hi88vip6-spacing-unit);
      margin-top: var(--page-hi88vip6-spacing-unit) * 2;
    }

    .page-hi88vip6-game-item {
      background-color: var(--page-hi88vip6-secondary-color);
      border-radius: var(--page-hi88vip6-border-radius);
      overflow: hidden;
      text-align: center;
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      cursor: pointer;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      height: 100%;
    }

    .page-hi88vip6-game-item:hover {
      transform: translateY(-5px);
      box-shadow: 0 8px 15px rgba(0, 0, 0, 0.4);
    }

    .page-hi88vip6-game-item img {
      width: 100%;
      height: 100px; /* Cố định chiều cao ảnh game */
      object-fit: cover;
      display: block;
    }

    .page-hi88vip6-game-item h3 {
      font-size: 1.1em;
      margin: 10px 0;
      color: var(--page-hi88vip6-primary-color);
      padding: 0 10px;
    }
    
    .page-hi88vip6-game-item a {
        display: block;
        padding: 10px;
        color: var(--page-hi88vip6-primary-color);
        font-weight: bold;
        text-decoration: none;
    }
    .page-hi88vip6-game-item a:hover {
        text-decoration: underline;
    }

    /* How-to Guide */
    .page-hi88vip6-guide-list {
      list-style: none;
      padding: 0;
      margin: 0;
    }

    .page-hi88vip6-guide-list li {
      background-color: var(--page-hi88vip6-secondary-color);
      margin-bottom: 10px;
      padding: var(--page-hi88vip6-spacing-unit);
      border-radius: var(--page-hi88vip6-border-radius);
      display: flex;
      align-items: center;
      gap: var(--page-hi88vip6-spacing-unit);
    }

    .page-hi88vip6-guide-list li strong {
      color: var(--page-hi88vip6-primary-color);
      font-size: 1.2em;
    }

    .page-hi88vip6-guide-icon {
      flex-shrink: 0;
      width: 40px;
      height: 40px;
      background-color: var(--page-hi88vip6-accent-color);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      font-size: 1.2em;
      color: #fff;
    }

    /* Promotions */
    .page-hi88vip6-promo-card {
      background-color: var(--page-hi88vip6-secondary-color);
      border-radius: var(--page-hi88vip6-border-radius);
      padding: var(--page-hi88vip6-spacing-unit);
      margin-bottom: var(--page-hi88vip6-spacing-unit);
      text-align: center;
    }

    .page-hi88vip6-promo-card h3 {
      color: var(--page-hi88vip6-primary-color);
      font-size: 1.4em;
      margin-bottom: 10px;
    }

    .page-hi88vip6-promo-card img {
      width: 100%;
      max-width: 300px;
      height: auto;
      border-radius: var(--page-hi88vip6-border-radius);
      margin: 15px auto;
      display: block;
    }

    /* Responsive adjustments */
    @media (min-width: 768px) {
      .page-hi88vip6-hero-image {
        height: 400px; /* Chiều cao banner cho máy tính bảng/desktop */
      }

      .page-hi88vip6-hero h1 {
        font-size: 3em;
      }

      .page-hi88vip6-hero p {
        font-size: 1.2em;
      }

      .page-hi88vip6-game-grid {
        grid-template-columns: repeat(4, 1fr);
      }
      
      .page-hi88vip6-game-item img {
        height: 150px; /* Cố định chiều cao ảnh game cho desktop */
      }
    }

    @media (min-width: 1024px) {
      .page-hi88vip6-hero-image {
        height: 500px;
      }
      .page-hi88vip6-game-grid {
        grid-template-columns: repeat(6, 1fr);
      }
    }