/* Tổng quan */
    .page-viva88net {
      font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
      line-height: 1.6;
      color: #333;
      background-color: #f9f9f9;
    }

    /* Vùng Hero */
    .page-viva88net__hero-section {
      position: relative;
      background-color: #0d47a1; /* Màu xanh đậm */
      color: #fff;
      padding: 100px 20px 60px; /* Padding top cho header cố định */
      text-align: center;
      overflow: hidden;
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      min-height: 450px; /* Đảm bảo đủ không gian */
      box-sizing: border-box;
    }

    .page-viva88net__hero-background-image {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      opacity: 0.3; /* Làm mờ ảnh nền */
      z-index: 1;
    }

    .page-viva88net__hero-content {
      position: relative;
      z-index: 2;
      max-width: 900px;
      margin: 0 auto;
    }

    .page-viva88net__hero-title {
      font-size: 2.8em;
      margin-bottom: 15px;
      line-height: 1.2;
      font-weight: 700;
      color: #ffeb3b; /* Màu vàng nổi bật */
    }

    .page-viva88net__hero-description {
      font-size: 1.2em;
      margin-bottom: 30px;
      max-width: 700px;
      margin-left: auto;
      margin-right: auto;
    }

    .page-viva88net__hero-cta-button {
      display: inline-block;
      background-color: #ff9800; /* Màu cam */
      color: #fff;
      padding: 15px 30px;
      border-radius: 8px;
      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-viva88net__hero-cta-button:hover {
      background-color: #f57c00;
      transform: translateY(-2px);
    }

    /* Phần chung cho các section */
    .page-viva88net__section {
      padding: 40px 20px;
      margin: 0 auto;
      max-width: 1200px;
      background-color: #fff;
      border-bottom: 1px solid #eee;
    }
    .page-viva88net__section:last-of-type {
        border-bottom: none;
    }

    .page-viva88net__section-title {
      font-size: 2.2em;
      color: #0d47a1;
      text-align: center;
      margin-bottom: 30px;
      font-weight: 700;
    }

    .page-viva88net__text-content {
      font-size: 1.1em;
      margin-bottom: 20px;
      text-align: justify;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
    }

    .page-viva88net__button {
      display: block;
      width: fit-content;
      margin: 30px auto;
      background-color: #4CAF50;
      color: white;
      padding: 12px 25px;
      border: none;
      border-radius: 5px;
      cursor: pointer;
      font-size: 1.05em;
      font-weight: bold;
      transition: background-color 0.3s ease;
      text-decoration: none;
      text-align: center;
    }

    .page-viva88net__button:hover {
      background-color: #45a049;
    }

    /* Danh sách link */
    .page-viva88net__link-list {
      list-style: none;
      padding: 0;
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 20px;
      margin-top: 30px;
    }

    .page-viva88net__link-item {
      background-color: #e3f2fd; /* Màu xanh nhạt */
      border-radius: 10px;
      padding: 20px;
      text-align: center;
      box-shadow: 0 4px 8px rgba(0,0,0,0.1);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      box-sizing: border-box; /* Quan trọng cho responsive */
    }

    .page-viva88net__link-item:hover {
      transform: translateY(-5px);
      box-shadow: 0 6px 12px rgba(0,0,0,0.15);
    }

    .page-viva88net__link-item-title {
      font-size: 1.3em;
      color: #1976d2;
      margin-bottom: 10px;
      font-weight: 600;
    }

    .page-viva88net__link-item-description {
      font-size: 0.95em;
      color: #555;
    }

    .page-viva88net__link-item-button {
      display: inline-block;
      margin-top: 15px;
      background-color: #2196f3; /* Màu xanh dương */
      color: #fff;
      padding: 10px 20px;
      border-radius: 5px;
      text-decoration: none;
      font-weight: bold;
      transition: background-color 0.3s ease;
      border: none;
      cursor: pointer;
    }

    .page-viva88net__link-item-button:hover {
      background-color: #1976d2;
    }

    /* Hướng dẫn */
    .page-viva88net__guide-steps {
      list-style: none;
      padding: 0;
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 25px;
      margin-top: 30px;
    }

    .page-viva88net__guide-step-item {
      background-color: #fff;
      border: 1px solid #ddd;
      border-radius: 10px;
      padding: 25px;
      box-shadow: 0 2px 5px rgba(0,0,0,0.05);
      box-sizing: border-box;
      transition: box-shadow 0.3s ease;
    }
    .page-viva88net__guide-step-item:hover {
        box-shadow: 0 4px 10px rgba(0,0,0,0.1);
    }

    .page-viva88net__guide-step-number {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 45px;
      height: 45px;
      background-color: #f44336; /* Màu đỏ */
      color: #fff;
      border-radius: 50%;
      font-size: 1.5em;
      font-weight: bold;
      margin-bottom: 15px;
    }

    .page-viva88net__guide-step-title {
      font-size: 1.4em;
      color: #3f51b5; /* Màu tím */
      margin-bottom: 10px;
      font-weight: 600;
    }

    .page-viva88net__guide-step-description {
      font-size: 1em;
      color: #555;
    }

    .page-viva88net__guide-step-image {
      width: 100%;
      height: auto;
      border-radius: 8px;
      margin-top: 15px;
      object-fit: cover;
      max-width: 100%; /* Đảm bảo hình ảnh không vượt quá chiều rộng */
      box-sizing: border-box;
    }

    /* Phần trò chơi */
    .page-viva88net__game-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
      gap: 25px;
      margin-top: 30px;
    }

    .page-viva88net__game-card {
      background-color: #fff;
      border: 1px solid #eee;
      border-radius: 10px;
      overflow: hidden;
      box-shadow: 0 4px 10px rgba(0,0,0,0.08);
      text-align: center;
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      box-sizing: border-box;
    }

    .page-viva88net__game-card:hover {
      transform: translateY(-8px);
      box-shadow: 0 8px 16px rgba(0,0,0,0.15);
    }

    .page-viva88net__game-image {
      width: 100%;
      height: 200px;
      object-fit: cover;
      display: block;
      max-width: 100%;
      box-sizing: border-box;
    }

    .page-viva88net__game-content {
      padding: 20px;
    }

    .page-viva88net__game-title {
      font-size: 1.5em;
      color: #0d47a1;
      margin-bottom: 10px;
      font-weight: 600;
    }

    .page-viva88net__game-description {
      font-size: 0.95em;
      color: #666;
      margin-bottom: 15px;
      text-align: left;
    }

    .page-viva88net__game-button {
      display: inline-block;
      background-color: #00c853; /* Màu xanh lá cây */
      color: #fff;
      padding: 10px 20px;
      border-radius: 5px;
      text-decoration: none;
      font-weight: bold;
      transition: background-color 0.3s ease;
      border: none;
      cursor: pointer;
    }

    .page-viva88net__game-button:hover {
      background-color: #00a040;
    }

    /* Ưu đãi */
    .page-viva88net__promotion-card {
      display: flex;
      flex-direction: column;
      align-items: center;
      background-color: #fffde7; /* Màu vàng nhạt */
      border: 2px solid #ffc107; /* Màu vàng đậm */
      border-radius: 15px;
      padding: 30px;
      text-align: center;
      margin-top: 30px;
      box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    }

    .page-viva88net__promotion-icon {
      width: 100px;
      height: 100px;
      object-fit: contain;
      margin-bottom: 20px;
      max-width: 100%;
      box-sizing: border-box;
    }

    .page-viva88net__promotion-title {
      font-size: 2em;
      color: #ff6f00; /* Màu cam đậm */
      margin-bottom: 15px;
      font-weight: 700;
    }

    .page-viva88net__promotion-description {
      font-size: 1.1em;
      color: #444;
      margin-bottom: 25px;
    }

    /* FAQ */
    .page-viva88net__faq-container {
      margin-top: 30px;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
    }

    .page-viva88net__faq-item {
      background-color: #fefefe;
      border: 1px solid #eee;
      margin-bottom: 10px;
      border-radius: 8px;
      overflow: hidden;
      box-shadow: 0 2px 5px rgba(0,0,0,0.05);
    }

    .page-viva88net__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 15px 20px;
      background-color: #e8f5e9; /* Màu xanh lá nhạt */
      color: #2e7d32; /* Màu xanh lá đậm */
      cursor: pointer;
      font-size: 1.1em;
      font-weight: 600;
      transition: background-color 0.3s ease;
      user-select: none;
    }

    .page-viva88net__faq-question:hover {
      background-color: #dcedc8;
    }
    
    .page-viva88net__faq-question h3 {
        margin: 0;
        font-size: 1.1em;
        color: #2e7d32;
        pointer-events: none; /* Ngăn chặn sự kiện click trên h3 */
    }

    .page-viva88net__faq-toggle {
      font-size: 1.5em;
      line-height: 1;
      margin-left: 15px;
      pointer-events: none; /* Ngăn chặn sự kiện click trên toggle */
    }

    .page-viva88net__faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 15px;
      opacity: 0;
      transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
      background-color: #f9fbe7; /* Màu kem nhạt */
      color: #444;
    }

    .page-viva88net__faq-item.active .page-viva88net__faq-answer {
      max-height: 2000px !important; /* Đủ lớn để chứa mọi nội dung */
      padding: 20px 15px !important;
      opacity: 1;
    }

    .page-viva88net__faq-item.active .page-viva88net__faq-toggle {
      content: '−'; /* Dấu trừ khi mở */
    }

    /* Nút đăng nhập nổi */
    .page-viva88net__floating-login-button {
      position: fixed;
      bottom: 20px;
      right: 20px;
      background-color: #ff5722; /* Màu cam đỏ */
      color: #fff;
      padding: 15px 25px;
      border-radius: 30px;
      font-size: 1.1em;
      font-weight: bold;
      text-align: center;
      box-shadow: 0 4px 15px rgba(0,0,0,0.2);
      z-index: 1000;
      transition: background-color 0.3s ease, transform 0.2s ease;
      text-decoration: none;
      animation: page-viva88net__bounce 2s infinite;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .page-viva88net__floating-login-button:hover {
      background-color: #e64a19;
      transform: scale(1.05);
      animation: none;
    }

    @keyframes page-viva88net__bounce {
      0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
      }
      40% {
        transform: translateY(-10px);
      }
      60% {
        transform: translateY(-5px);
      }
    }

    /* Hình ảnh chung */
    .page-viva88net img {
      max-width: 100%;
      height: auto;
      display: block;
      margin: 20px auto;
      border-radius: 8px;
      box-shadow: 0 2px 8px rgba(0,0,0,0.1);
      box-sizing: border-box; /* Đảm bảo padding/border không làm tràn */
    }

    /* Mobile Responsive */
    @media (max-width: 768px) {
      .page-viva88net__hero-section {
        padding: 80px 15px 40px; /* Điều chỉnh padding cho mobile */
        min-height: 350px;
      }

      .page-viva88net__hero-title {
        font-size: 2em;
      }

      .page-viva88net__hero-description {
        font-size: 1em;
      }

      .page-viva88net__hero-cta-button {
        padding: 12px 25px;
        font-size: 1em;
      }

      .page-viva88net__section {
        padding: 30px 15px;
      }

      .page-viva88net__section-title {
        font-size: 1.8em;
        margin-bottom: 20px;
      }

      .page-viva88net__text-content {
        font-size: 0.95em;
      }

      /* Responsive cho danh sách và grid */
      .page-viva88net__link-list,
      .page-viva88net__guide-steps,
      .page-viva88net__game-grid {
        grid-template-columns: 1fr; /* Một cột trên mobile */
        gap: 15px;
      }

      .page-viva88net__link-item,
      .page-viva88net__guide-step-item,
      .page-viva88net__game-card {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
        padding: 15px !important; /* Giảm padding cho mobile */
      }

      .page-viva88net__guide-step-title,
      .page-viva88net__game-title {
        font-size: 1.2em;
      }

      .page-viva88net__game-image {
        height: 150px;
      }

      .page-viva88net__promotion-title {
        font-size: 1.5em;
      }

      .page-viva88net__promotion-description {
        font-size: 0.95em;
      }

      .page-viva88net__floating-login-button {
        bottom: 15px;
        right: 15px;
        padding: 12px 20px;
        font-size: 1em;
      }
      
      .page-viva88net__faq-question {
        padding: 12px 15px;
        font-size: 1em;
      }

      .page-viva88net__faq-question h3 {
        font-size: 1em;
      }

      .page-viva88net__faq-answer {
        padding: 15px 15px !important;
      }
      
      /* Force image responsiveness */
      .page-viva88net img {
        max-width: 100% !important;
        height: auto !important;
        box-sizing: border-box !important;
      }
    }