/* Tổng quan */
    .page-qh88dangnhap {
      font-family: 'Arial', sans-serif;
      background-color: #000; /* Nền đen */
      color: #FFF; /* Chữ trắng mặc định */
      line-height: 1.6;
      padding-bottom: 80px; /* Khoảng trống cho nút nổi */
    }

    .page-qh88dangnhap__container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 15px;
    }

    .page-qh88dangnhap__section {
      padding: 60px 0;
      text-align: center;
    }

    .page-qh88dangnhap__section-title {
      color: #FFD700; /* Chữ vàng */
      font-size: 2.5em;
      margin-bottom: 30px;
      text-transform: uppercase;
    }

    .page-qh88dangnhap__section-subtitle {
      color: #FFF;
      font-size: 1.2em;
      margin-bottom: 40px;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
    }

    /* Hero Section */
    .page-qh88dangnhap__hero-section {
      position: relative;
      padding-top: 150px; /* Đảm bảo không bị che bởi header cố định */
      padding-bottom: 40px;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      background-color: #000;
    }

    .page-qh88dangnhap__hero-image {
      max-width: 100%;
      height: auto;
      display: block;
      margin-bottom: 30px;
      border-radius: 8px;
      box-shadow: 0 5px 15px rgba(255, 215, 0, 0.2);
    }

    .page-qh88dangnhap__hero-content {
      text-align: center;
      padding: 0 15px;
    }

    .page-qh88dangnhap__hero-title {
      font-size: 3em;
      color: #FFD700;
      margin-bottom: 20px;
      line-height: 1.2;
    }

    .page-qh88dangnhap__hero-description {
      font-size: 1.3em;
      color: #FFF;
      margin-bottom: 30px;
      max-width: 900px;
      margin-left: auto;
      margin-right: auto;
    }

    .page-qh88dangnhap__cta-button {
      display: inline-block;
      background-color: #FFD700;
      color: #000;
      padding: 15px 30px;
      border-radius: 50px;
      text-decoration: none;
      font-size: 1.2em;
      font-weight: bold;
      transition: background-color 0.3s ease, transform 0.3s ease;
      box-shadow: 0 4px 10px rgba(255, 215, 0, 0.4);
    }

    .page-qh88dangnhap__cta-button:hover {
      background-color: #FFF;
      transform: translateY(-3px);
      box-shadow: 0 6px 15px rgba(255, 215, 0, 0.6);
    }

    /* Floating Login Button */
    .page-qh88dangnhap__floating-login {
      position: fixed;
      bottom: 20px;
      right: 20px;
      z-index: 1000;
      animation: pulse 2s infinite;
    }

    .page-qh88dangnhap__floating-login-button {
      display: flex;
      align-items: center;
      background-color: #FFD700;
      color: #000;
      padding: 12px 25px;
      border-radius: 50px;
      text-decoration: none;
      font-size: 1.1em;
      font-weight: bold;
      box-shadow: 0 4px 15px rgba(255, 215, 0, 0.6);
      transition: background-color 0.3s ease, transform 0.3s ease;
    }

    .page-qh88dangnhap__floating-login-button:hover {
      background-color: #FFF;
      transform: scale(1.05);
    }

    .page-qh88dangnhap__floating-login-button img {
      margin-right: 8px;
      width: 24px;
      height: 24px;
      vertical-align: middle;
      max-width: 100%; /* Ensure responsiveness */
      height: auto; /* Ensure responsiveness */
    }

    @keyframes pulse {
      0% {
        transform: scale(1);
      }
      50% {
        transform: scale(1.08);
      }
      100% {
        transform: scale(1);
      }
    }

    /* Game Categories */
    .page-qh88dangnhap__game-categories {
      background-color: #1a1a1a;
    }

    .page-qh88dangnhap__game-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 25px;
      margin-top: 40px;
    }

    .page-qh88dangnhap__game-card {
      background-color: #222;
      border-radius: 12px;
      overflow: hidden;
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      text-align: center;
      padding-bottom: 20px;
      display: flex;
      flex-direction: column;
      align-items: center;
    }

    .page-qh88dangnhap__game-card:hover {
      transform: translateY(-8px);
      box-shadow: 0 8px 20px rgba(255, 215, 0, 0.4);
    }

    .page-qh88dangnhap__game-card-image {
      width: 100%;
      height: 200px;
      object-fit: cover;
      display: block;
      margin-bottom: 15px;
    }

    .page-qh88dangnhap__game-card-title {
      font-size: 1.5em;
      color: #FFD700;
      margin-bottom: 10px;
      padding: 0 15px;
    }

    .page-qh88dangnhap__game-card-link {
      display: inline-block;
      color: #FFF;
      text-decoration: none;
      background-color: #444;
      padding: 8px 15px;
      border-radius: 20px;
      font-size: 0.9em;
      transition: background-color 0.3s ease;
    }

    .page-qh88dangnhap__game-card-link:hover {
      background-color: #FFD700;
      color: #000;
    }

    /* Promotions Section */
    .page-qh88dangnhap__promotions-section {
      background-color: #000;
    }

    .page-qh88dangnhap__promo-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 30px;
      margin-top: 40px;
    }

    .page-qh88dangnhap__promo-card {
      background-color: #222;
      border-radius: 12px;
      overflow: hidden;
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      text-align: left;
    }

    .page-qh88dangnhap__promo-card:hover {
      transform: translateY(-8px);
      box-shadow: 0 8px 20px rgba(255, 215, 0, 0.4);
    }

    .page-qh88dangnhap__promo-image {
      width: 100%;
      height: 220px;
      object-fit: cover;
      display: block;
    }

    .page-qh88dangnhap__promo-content {
      padding: 20px;
    }

    .page-qh88dangnhap__promo-title {
      font-size: 1.6em;
      color: #FFD700;
      margin-bottom: 10px;
    }

    .page-qh88dangnhap__promo-description {
      font-size: 1em;
      color: #CCC;
      margin-bottom: 15px;
    }

    .page-qh88dangnhap__promo-link {
      display: inline-block;
      background-color: #FFD700;
      color: #000;
      padding: 10px 20px;
      border-radius: 30px;
      text-decoration: none;
      font-weight: bold;
      transition: background-color 0.3s ease;
    }

    .page-qh88dangnhap__promo-link:hover {
      background-color: #FFF;
    }

    /* Game Providers */
    .page-qh88dangnhap__providers-section {
      background-color: #1a1a1a;
    }

    .page-qh88dangnhap__provider-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
      gap: 20px;
      margin-top: 40px;
      justify-items: center;
      align-items: center;
    }

    .page-qh88dangnhap__provider-logo-wrapper {
      background-color: #222;
      border-radius: 8px;
      padding: 15px;
      display: flex;
      align-items: center;
      justify-content: center;
      width: 100px; /* Fixed width for logo container */
      height: 80px; /* Fixed height for logo container */
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
    }

    .page-qh88dangnhap__provider-logo-wrapper:hover {
      transform: translateY(-5px);
      box-shadow: 0 4px 12px rgba(255, 215, 0, 0.4);
    }

    .page-qh88dangnhap__provider-logo {
      max-width: 100%;
      max-height: 100%;
      object-fit: contain;
      display: block;
    }

    /* Payment Methods */
    .page-qh88dangnhap__payments-section {
      background-color: #000;
    }

    .page-qh88dangnhap__payment-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
      gap: 20px;
      margin-top: 40px;
      justify-items: center;
      align-items: center;
    }

    .page-qh88dangnhap__payment-logo-wrapper {
      background-color: #222;
      border-radius: 8px;
      padding: 15px;
      display: flex;
      align-items: center;
      justify-content: center;
      width: 100px;
      height: 80px;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
    }

    .page-qh88dangnhap__payment-logo-wrapper:hover {
      transform: translateY(-5px);
      box-shadow: 0 4px 12px rgba(255, 215, 0, 0.4);
    }

    .page-qh88dangnhap__payment-logo {
      max-width: 100%;
      max-height: 100%;
      object-fit: contain;
      display: block;
    }

    /* Why Choose Us Section */
    .page-qh88dangnhap__why-choose-us {
      background-color: #1a1a1a;
      text-align: left;
    }

    .page-qh88dangnhap__why-choose-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 30px;
      margin-top: 40px;
    }

    .page-qh88dangnhap__advantage-card {
      background-color: #222;
      border-radius: 12px;
      padding: 30px;
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
    }

    .page-qh88dangnhap__advantage-card:hover {
      transform: translateY(-8px);
      box-shadow: 0 8px 20px rgba(255, 215, 0, 0.4);
    }

    .page-qh88dangnhap__advantage-title {
      font-size: 1.8em;
      color: #FFD700;
      margin-bottom: 15px;
      display: flex;
      align-items: center;
    }

    .page-qh88dangnhap__advantage-title img {
      margin-right: 10px;
      width: 40px;
      height: 40px;
      max-width: 100%;
      height: auto;
    }

    .page-qh88dangnhap__advantage-description {
      color: #CCC;
      font-size: 1.1em;
    }

    /* FAQ Section */
    .page-qh88dangnhap__faq-section {
      background-color: #000;
    }

    .page-qh88dangnhap__faq-list {
      margin-top: 40px;
      max-width: 900px;
      margin-left: auto;
      margin-right: auto;
    }

    .page-qh88dangnhap__faq-item {
      background-color: #1a1a1a;
      border-radius: 8px;
      margin-bottom: 15px;
      overflow: hidden;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
      transition: all 0.3s ease;
    }

    .page-qh88dangnhap__faq-item.active {
      box-shadow: 0 4px 15px rgba(255, 215, 0, 0.4);
    }

    .page-qh88dangnhap__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 20px 25px;
      cursor: pointer;
      background-color: #222;
      color: #FFD700;
      font-size: 1.3em;
      font-weight: bold;
      border-bottom: 1px solid #333;
      user-select: none;
      transition: background-color 0.3s ease;
    }

    .page-qh88dangnhap__faq-question:hover {
      background-color: #333;
    }

    .page-qh88dangnhap__faq-question h3 {
      margin: 0;
      flex-grow: 1;
      text-align: left;
      color: #FFD700;
      font-size: 1em; /* Adjusted to fit the parent font-size */
      pointer-events: none; /* Prevent h3 from blocking click on parent */
    }

    .page-qh88dangnhap__faq-toggle {
      font-size: 1.5em;
      font-weight: bold;
      color: #FFD700;
      margin-left: 15px;
      pointer-events: none; /* Prevent toggle icon from blocking click on parent */
    }

    .page-qh88dangnhap__faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 25px;
      color: #CCC;
      background-color: #1a1a1a;
      transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
      opacity: 0;
      text-align: left;
    }

    .page-qh88dangnhap__faq-item.active .page-qh88dangnhap__faq-answer {
      max-height: 2000px !important; /* Sufficiently large */
      padding: 20px 25px !important;
      opacity: 1;
    }

    /* Responsive Design */
    @media (max-width: 768px) {
      .page-qh88dangnhap__hero-section {
        padding-top: 120px; /* Điều chỉnh cho di động */
      }

      .page-qh88dangnhap__hero-title {
        font-size: 2.2em;
      }

      .page-qh88dangnhap__hero-description {
        font-size: 1em;
      }

      .page-qh88dangnhap__cta-button {
        padding: 12px 25px;
        font-size: 1em;
      }

      .page-qh88dangnhap__section-title {
        font-size: 2em;
      }

      .page-qh88dangnhap__section {
        padding: 40px 0;
      }

      .page-qh88dangnhap__game-grid,
      .page-qh88dangnhap__promo-grid,
      .page-qh88dangnhap__why-choose-grid {
        grid-template-columns: 1fr;
      }

      .page-qh88dangnhap__provider-grid,
      .page-qh88dangnhap__payment-grid {
        grid-template-columns: repeat(auto-fit, minmax(90px, 1fr));
      }

      .page-qh88dangnhap__provider-logo-wrapper,
      .page-qh88dangnhap__payment-logo-wrapper {
        width: 80px;
        height: 60px;
        padding: 10px;
      }

      .page-qh88dangnhap__faq-question {
        padding: 15px 20px;
        font-size: 1.1em;
      }

      .page-qh88dangnhap__faq-answer {
        padding: 0 20px;
      }

      .page-qh88dangnhap__faq-item.active .page-qh88dangnhap__faq-answer {
        padding: 15px 20px !important;
      }

      .page-qh88dangnhap__floating-login-button {
        padding: 10px 20px;
        font-size: 0.9em;
      }

      /* Image responsiveness for mobile */
      .page-qh88dangnhap img {
        max-width: 100% !important;
        height: auto !important;
      }
      .page-qh88dangnhap > * {
        box-sizing: border-box !important;
      }
      .page-qh88dangnhap__hero-image,
      .page-qh88dangnhap__game-card-image,
      .page-qh88dangnhap__promo-image,
      .page-qh88dangnhap__provider-logo,
      .page-qh88dangnhap__payment-logo,
      .page-qh88dangnhap__advantage-title img {
        width: 100% !important;
        max-width: 100% !important;
        height: auto !important;
        overflow: hidden !important;
        box-sizing: border-box !important;
      }
    }