/* Tổng quan */
    .page-app {
      background-color: #000000;
      color: #ffffff;
      font-family: 'Arial', sans-serif;
      line-height: 1.6;
      padding: 0;
      margin: 0;
      overflow-x: hidden;
    }

    .page-app__container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 20px;
      box-sizing: border-box;
    }

    .page-app__section {
      padding: 40px 20px;
      margin-bottom: 20px;
      border-radius: 8px;
      background-color: #1a1a1a;
      box-sizing: border-box;
    }

    .page-app__section-title {
      color: #ffd700; /* Vàng */
      font-size: 2.5em;
      text-align: center;
      margin-bottom: 30px;
      position: relative;
      padding-bottom: 15px;
    }

    .page-app__section-title::after {
      content: '';
      position: absolute;
      left: 50%;
      bottom: 0;
      transform: translateX(-50%);
      width: 80px;
      height: 4px;
      background-color: #ffd700;
      border-radius: 2px;
    }

    .page-app__text {
      font-size: 1.1em;
      margin-bottom: 15px;
      color: #e0e0e0;
    }

    /* Hero Section */
    .page-app__hero-section {
      position: relative;
      text-align: center;
      padding-top: 10px; /* An toàn cho header cố định */
      background-color: #000;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      min-height: 300px; /* Đảm bảo đủ không gian */
      box-sizing: border-box;
    }

    .page-app__hero-image {
      width: 100%;
      max-width: 100%;
      height: auto;
      object-fit: cover;
      display: block;
      border-radius: 8px;
      margin-bottom: 20px;
      box-sizing: border-box;
    }

    .page-app__hero-content {
      position: relative;
      z-index: 2;
      padding: 20px;
      max-width: 900px;
      margin: 0 auto;
    }

    .page-app__hero-title {
      font-size: 3em;
      color: #ffd700;
      margin-bottom: 20px;
      line-height: 1.2;
      text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.7);
    }

    .page-app__hero-subtitle {
      font-size: 1.4em;
      color: #ffffff;
      margin-bottom: 30px;
      text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.5);
    }

    .page-app__cta-button {
      display: inline-block;
      background-color: #ffd700;
      color: #000000;
      padding: 15px 30px;
      border-radius: 50px;
      text-decoration: none;
      font-weight: bold;
      font-size: 1.2em;
      transition: background-color 0.3s ease, transform 0.3s ease;
      border: none;
      cursor: pointer;
    }

    .page-app__cta-button:hover {
      background-color: #ffe066;
      transform: translateY(-3px);
    }

    /* Floating Login Button */
    .page-app__floating-login-button {
      position: fixed;
      bottom: 20px;
      right: 20px;
      background-color: #ff4500; /* Màu cam nổi bật */
      color: #ffffff;
      padding: 12px 20px;
      border-radius: 30px;
      font-size: 1.1em;
      font-weight: bold;
      text-align: center;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
      z-index: 1000;
      cursor: pointer;
      transition: background-color 0.3s ease, transform 0.3s ease;
    }

    .page-app__floating-login-button:hover {
      background-color: #ff6347;
      transform: translateY(-5px);
    }

    .page-app__floating-login-button span {
      display: block;
      margin-bottom: 5px;
    }

    .page-app__floating-login-button a {
      color: #ffffff;
      text-decoration: none;
      font-weight: bold;
    }

    /* Game Categories */
    .page-app__game-categories {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 25px;
      margin-top: 30px;
    }

    .page-app__game-card {
      background-color: #2a2a2a;
      border-radius: 10px;
      overflow: hidden;
      box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      text-align: center;
      padding-bottom: 20px;
      box-sizing: border-box;
    }

    .page-app__game-card:hover {
      transform: translateY(-8px);
      box-shadow: 0 8px 16px rgba(0, 0, 0, 0.5);
    }

    .page-app__game-card-image {
      width: 100%;
      height: 200px;
      object-fit: cover;
      display: block;
      border-bottom: 3px solid #ffd700;
      box-sizing: border-box;
    }

    .page-app__game-card-title {
      color: #ffd700;
      font-size: 1.5em;
      margin: 20px 10px 10px;
    }

    .page-app__game-card-description {
      color: #e0e0e0;
      font-size: 0.95em;
      padding: 0 15px;
    }

    /* Game Providers */
    .page-app__providers-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
      gap: 20px;
      margin-top: 30px;
    }

    .page-app__provider-item {
      background-color: #2a2a2a;
      border-radius: 8px;
      padding: 15px;
      text-align: center;
      box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
      transition: transform 0.3s ease;
      box-sizing: border-box;
    }

    .page-app__provider-item:hover {
      transform: scale(1.05);
    }

    .page-app__provider-logo {
      max-width: 100%;
      height: 80px; /* Chiều cao cố định để logo hiển thị đồng đều */
      object-fit: contain; /* Đảm bảo logo không bị biến dạng */
      margin-bottom: 10px;
      display: block;
      margin-left: auto;
      margin-right: auto;
      box-sizing: border-box;
    }

    .page-app__provider-name {
      color: #ffffff;
      font-weight: bold;
      font-size: 1em;
    }

    /* How-to Guide */
    .page-app__guide-steps {
      display: flex;
      flex-direction: column;
      gap: 30px;
      margin-top: 30px;
    }

    .page-app__guide-step {
      display: flex;
      align-items: center;
      background-color: #2a2a2a;
      border-radius: 10px;
      padding: 25px;
      box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
      box-sizing: border-box;
    }

    .page-app__guide-step:nth-child(even) {
      flex-direction: row-reverse;
    }

    .page-app__step-number {
      font-size: 3em;
      color: #ffd700;
      font-weight: bold;
      margin-right: 25px;
      flex-shrink: 0;
    }

    .page-app__guide-step:nth-child(even) .page-app__step-number {
      margin-left: 25px;
      margin-right: 0;
    }

    .page-app__step-content {
      flex-grow: 1;
    }

    .page-app__step-title {
      color: #ffd700;
      font-size: 1.8em;
      margin-bottom: 10px;
    }

    .page-app__step-description {
      color: #e0e0e0;
      font-size: 1.1em;
    }

    .page-app__step-image {
      max-width: 250px;
      height: auto;
      border-radius: 8px;
      margin-left: 25px;
      flex-shrink: 0;
      box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
      box-sizing: border-box;
    }

    .page-app__guide-step:nth-child(even) .page-app__step-image {
      margin-right: 25px;
      margin-left: 0;
    }

    /* FAQ Section */
    .page-app__faq-list {
      margin-top: 30px;
    }

    .page-app__faq-item {
      background-color: #2a2a2a;
      border-radius: 8px;
      margin-bottom: 15px;
      overflow: hidden;
      box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
      box-sizing: border-box;
    }

    .page-app__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 18px 25px;
      background-color: #333333;
      color: #ffd700;
      font-size: 1.3em;
      font-weight: bold;
      cursor: pointer;
      user-select: none;
      transition: background-color 0.3s ease;
    }

    .page-app__faq-question:hover {
      background-color: #444444;
    }

    .page-app__faq-question h3 {
      margin: 0;
      color: #ffd700;
      font-size: 1.1em; /* Điều chỉnh kích thước font cho H3 */
      pointer-events: none; /* Ngăn chặn sự kiện click trên H3 */
    }

    .page-app__faq-toggle {
      font-size: 1.5em;
      font-weight: bold;
      pointer-events: none; /* Ngăn chặn sự kiện click trên biểu tượng */
      transition: transform 0.3s ease;
    }

    .page-app__faq-item.active .page-app__faq-toggle {
      transform: rotate(45deg); /* Biểu tượng '+' xoay thành 'x' hoặc '-' */
    }

    .page-app__faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 25px;
      color: #e0e0e0;
      font-size: 1.05em;
      transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
      opacity: 0;
    }

    .page-app__faq-item.active .page-app__faq-answer {
      max-height: 2000px !important; /* Đủ lớn để chứa mọi nội dung */
      padding: 20px 25px !important;
      opacity: 1;
    }

    /* Social Media */
    .page-app__social-links {
      display: flex;
      justify-content: center;
      gap: 25px;
      margin-top: 30px;
      flex-wrap: wrap;
    }

    .page-app__social-link {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 60px;
      height: 60px;
      border-radius: 50%;
      background-color: #333333;
      color: #ffffff;
      font-size: 1.8em;
      text-decoration: none;
      transition: background-color 0.3s ease, transform 0.3s ease;
      box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
    }

    .page-app__social-link:hover {
      background-color: #ffd700;
      color: #000000;
      transform: translateY(-5px);
    }

    /* Responsive Design */
    @media (max-width: 1024px) {
      .page-app__hero-title {
        font-size: 2.5em;
      }
      .page-app__hero-subtitle {
        font-size: 1.2em;
      }
      .page-app__game-categories {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
      }
      .page-app__providers-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
      }
    }

    @media (max-width: 768px) {
      .page-app__section {
        padding: 30px 15px;
      }
      .page-app__section-title {
        font-size: 2em;
      }
      .page-app__hero-section {
        padding-top: 10px; /* Đảm bảo an toàn cho header cố định */
        min-height: 250px;
      }
      .page-app__hero-title {
        font-size: 2em;
      }
      .page-app__hero-subtitle {
        font-size: 1em;
      }
      .page-app__cta-button {
        padding: 12px 25px;
        font-size: 1.1em;
      }

      /* Responsive list items */
      .page-app__game-categories,
      .page-app__providers-grid,
      .page-app__guide-steps,
      .page-app__faq-list {
        width: 100% !important;
        max-width: 100% !important;
        padding: 0 !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
        box-sizing: border-box !important;
      }

      .page-app__game-card,
      .page-app__provider-item,
      .page-app__guide-step,
      .page-app__faq-item {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
        padding-left: 15px !important;
        padding-right: 15px !important;
        word-wrap: break-word !important;
        overflow-wrap: break-word !important;
        word-break: break-word !important;
      }

      .page-app__guide-step {
        flex-direction: column;
        text-align: center;
      }

      .page-app__guide-step:nth-child(even) {
        flex-direction: column;
      }

      .page-app__step-number {
        margin: 0 auto 15px auto;
      }

      .page-app__guide-step:nth-child(even) .page-app__step-number {
        margin: 0 auto 15px auto;
      }

      .page-app__step-image {
        margin: 20px auto 0 auto;
        max-width: 90%;
      }

      .page-app__guide-step:nth-child(even) .page-app__step-image {
        margin: 20px auto 0 auto;
      }

      .page-app__floating-login-button {
        bottom: 15px;
        right: 15px;
        padding: 10px 15px;
        font-size: 1em;
      }

      /* Image responsive */
      .page-app img {
        max-width: 100% !important;
        height: auto !important;
        box-sizing: border-box !important;
      }
    }

    @media (max-width: 480px) {
      .page-app__hero-title {
        font-size: 1.8em;
      }
      .page-app__hero-subtitle {
        font-size: 0.9em;
      }
      .page-app__section-title {
        font-size: 1.8em;
      }
      .page-app__faq-question {
        font-size: 1.1em;
        padding: 15px 18px;
      }
      .page-app__faq-question h3 {
        font-size: 1em;
      }
      .page-app__faq-answer {
        font-size: 0.95em;
        padding: 0 18px;
      }
      .page-app__faq-item.active .page-app__faq-answer {
        padding: 15px 18px !important;
      }
      .page-app__social-link {
        width: 50px;
        height: 50px;
        font-size: 1.5em;
      }
    }