/* Tổng quan */
    .page-app {
      font-family: 'Arial', sans-serif;
      background-color: #000;
      color: #fff;
      line-height: 1.6;
      padding-bottom: 50px; /* Thêm padding dưới để tránh footer */
    }

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

    .page-app__section {
      padding: 40px 0;
      text-align: center;
    }

    .page-app__section--dark {
      background-color: #1a1a1a;
    }

    .page-app__heading {
      color: #FFD700; /* Vàng */
      margin-bottom: 20px;
      font-size: 2.5em;
      font-weight: bold;
    }

    .page-app__subheading {
      color: #fff;
      margin-bottom: 30px;
      font-size: 1.2em;
    }

    .page-app__text {
      color: #ccc;
      margin-bottom: 20px;
      font-size: 1em;
      line-height: 1.8;
    }

    .page-app__button {
      display: inline-block;
      background-color: #FFD700;
      color: #000;
      padding: 12px 25px;
      border-radius: 5px;
      text-decoration: none;
      font-weight: bold;
      transition: background-color 0.3s ease;
      border: none;
      cursor: pointer;
      font-size: 1.1em;
    }

    .page-app__button:hover {
      background-color: #e0b800;
    }

    /* Hero Section */
    .page-app__hero-section {
      padding-top: 160px; /* Đảm bảo không bị che bởi header cố định */
      position: relative;
      overflow: hidden;
      background-color: #000;
    }

    .page-app__hero-image-wrapper {
      width: 100%;
      max-width: 100%;
      overflow: hidden;
      box-sizing: border-box;
      margin-bottom: 20px;
    }

    .page-app__hero-image {
      max-width: 100%;
      height: auto;
      display: block;
      margin: 0 auto;
      border-radius: 10px;
      box-shadow: 0 0 20px rgba(255, 215, 0, 0.5);
      min-width: 200px; /* Enforce minimum size */
      min-height: 200px;
    }

    .page-app__hero-content {
      position: relative;
      z-index: 1;
      padding: 20px 15px 40px;
    }

    .page-app__hero-title {
      font-size: 3em;
      color: #FFD700;
      margin-bottom: 15px;
      text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.7);
    }

    .page-app__hero-description {
      font-size: 1.3em;
      color: #fff;
      margin-bottom: 30px;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
    }

    /* Features Section */
    .page-app__features-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 30px;
      margin-top: 40px;
    }

    .page-app__feature-item {
      background-color: #1a1a1a;
      padding: 30px;
      border-radius: 10px;
      text-align: left;
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      border: 1px solid #333;
    }

    .page-app__feature-item:hover {
      transform: translateY(-10px);
      box-shadow: 0 10px 20px rgba(255, 215, 0, 0.2);
    }

    .page-app__feature-icon-wrapper {
        width: 100%;
        max-width: 100%;
        overflow: hidden;
        box-sizing: border-box;
        margin-bottom: 15px;
        text-align: center;
    }

    .page-app__feature-icon {
      max-width: 200px; /* Minimum size */
      height: auto;
      display: inline-block;
      margin-bottom: 15px;
      border-radius: 5px;
      min-width: 200px; /* Enforce minimum size */
      min-height: 200px;
    }

    .page-app__feature-title {
      color: #FFD700;
      font-size: 1.5em;
      margin-bottom: 10px;
    }

    .page-app__feature-description {
      color: #ccc;
      font-size: 0.95em;
    }

    /* How To Download Section */
    .page-app__download-steps {
      display: flex;
      flex-direction: column;
      gap: 25px;
      margin-top: 40px;
    }

    .page-app__step-item {
      background-color: #1a1a1a;
      padding: 25px;
      border-radius: 10px;
      text-align: left;
      display: flex;
      align-items: flex-start;
      border: 1px solid #333;
    }

    .page-app__step-number {
      font-size: 2em;
      color: #FFD700;
      font-weight: bold;
      margin-right: 20px;
      flex-shrink: 0;
    }

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

    .page-app__step-title {
      color: #FFD700;
      font-size: 1.3em;
      margin-bottom: 10px;
    }

    .page-app__step-text {
      color: #ccc;
      font-size: 0.95em;
    }

    .page-app__download-buttons {
      display: flex;
      justify-content: center;
      gap: 20px;
      margin-top: 30px;
      flex-wrap: wrap;
    }

    .page-app__download-button {
      background-color: #FFD700;
      color: #000;
      padding: 15px 30px;
      border-radius: 8px;
      text-decoration: none;
      font-weight: bold;
      font-size: 1.2em;
      transition: background-color 0.3s ease;
      display: flex;
      align-items: center;
      gap: 10px;
      border: none;
      cursor: pointer;
      min-width: 280px; /* Adjust button size to accommodate larger icon */
      justify-content: center;
    }

    .page-app__download-button:hover {
      background-color: #e0b800;
    }

    .page-app__download-icon-wrapper { /* New wrapper for icon to enforce size */
        width: 100%;
        max-width: 100%;
        overflow: hidden;
        box-sizing: border-box;
        display: inline-block;
        vertical-align: middle;
        flex-shrink: 0;
        max-width: 200px; /* Constrain wrapper to match icon min size */
    }

    .page-app__download-icon { /* This is the actual image */
        max-width: 100%;
        height: auto;
        display: block;
        margin: 0 auto;
        min-width: 200px; /* Enforce minimum size for icon */
        min-height: 200px;
    }

    /* Game Categories */
    .page-app__game-categories {
      margin-top: 40px;
    }

    .page-app__game-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
      gap: 25px;
      margin-top: 30px;
    }

    .page-app__game-card {
      background-color: #1a1a1a;
      padding: 20px;
      border-radius: 10px;
      text-align: center;
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      border: 1px solid #333;
    }

    .page-app__game-card:hover {
      transform: translateY(-8px);
      box-shadow: 0 8px 15px rgba(255, 215, 0, 0.2);
    }

    .page-app__game-image-wrapper {
        width: 100%;
        max-width: 100%;
        overflow: hidden;
        box-sizing: border-box;
        margin-bottom: 15px;
    }

    .page-app__game-image {
      max-width: 100%;
      height: auto;
      display: block;
      margin: 0 auto;
      border-radius: 5px;
      min-width: 200px; /* Enforce minimum size */
      min-height: 200px;
    }

    .page-app__game-title {
      color: #FFD700;
      font-size: 1.2em;
      margin-top: 10px;
    }

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

    .page-app__provider-logo-wrapper {
        width: 100%;
        max-width: 100%;
        overflow: hidden;
        box-sizing: border-box;
        background-color: #2a2a2a;
        padding: 10px;
        border-radius: 8px;
        transition: transform 0.3s ease;
        border: 1px solid #444;
    }

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

    .page-app__provider-logo {
      max-width: 100%;
      height: auto;
      display: block;
      margin: 0 auto;
      min-width: 200px; /* Enforce minimum size for all images */
      min-height: 200px; /* Enforce minimum size for all images */
      transition: transform 0.3s ease;
    }

    /* Promotions Section */
    .page-app__promo-card {
      background-color: #1a1a1a;
      padding: 30px;
      border-radius: 10px;
      margin-top: 40px;
      text-align: center;
      border: 1px solid #FFD700;
      box-shadow: 0 0 25px rgba(255, 215, 0, 0.4);
    }

    .page-app__promo-title {
      color: #FFD700;
      font-size: 2em;
      margin-bottom: 15px;
    }

    .page-app__promo-text {
      color: #fff;
      font-size: 1.1em;
      margin-bottom: 25px;
    }

    /* Why Choose Section */
    .page-app__why-choose-list {
      list-style: none;
      padding: 0;
      margin-top: 30px;
      text-align: left;
    }

    .page-app__why-choose-item {
      background-color: #1a1a1a;
      margin-bottom: 15px;
      padding: 20px;
      border-radius: 8px;
      display: flex;
      align-items: center;
      gap: 15px;
      border: 1px solid #333;
    }

    .page-app__why-choose-icon {
      color: #FFD700;
      font-size: 1.5em;
      flex-shrink: 0;
      /* No actual image here, so no 200x200 rule */
    }

    .page-app__why-choose-text {
      color: #ccc;
      font-size: 1em;
    }

    /* FAQ Section */
    .page-app__faq-section {
      padding: 60px 0;
      background-color: #000;
      text-align: center;
    }

    .page-app__faq-list {
      max-width: 800px;
      margin: 30px auto 0;
      text-align: left;
    }

    .page-app__faq-item {
      background-color: #1a1a1a;
      margin-bottom: 15px;
      border-radius: 8px;
      overflow: hidden;
      border: 1px solid #333;
    }

    .page-app__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 20px 25px;
      cursor: pointer;
      background-color: #2a2a2a;
      color: #FFD700;
      font-size: 1.15em;
      font-weight: bold;
      transition: background-color 0.3s ease;
      user-select: none;
    }

    .page-app__faq-question:hover {
      background-color: #3a3a3a;
    }

    .page-app__faq-question h3 {
        margin: 0;
        color: #FFD700;
        font-size: 1.15em;
        pointer-events: none; /* Prevent h3 from blocking click event */
    }

    .page-app__faq-toggle {
      font-size: 1.5em;
      font-weight: bold;
      color: #FFD700;
      transition: transform 0.3s ease;
      pointer-events: none; /* Prevent toggle from blocking click event */
    }

    .page-app__faq-item.active .page-app__faq-toggle {
      transform: rotate(45deg); /* Plus sign becomes cross */
    }

    .page-app__faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 25px; /* Initial padding */
      color: #ccc;
      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; /* Sufficiently large to contain content */
      padding: 20px 25px !important; /* Expanded padding */
      opacity: 1;
    }

    /* Call to Action Section */
    .page-app__cta-section {
      background-color: #1a1a1a;
      padding: 50px 0;
      margin-top: 60px;
      border-top: 2px solid #FFD700;
      border-bottom: 2px solid #FFD700;
    }

    .page-app__cta-title {
      color: #FFD700;
      font-size: 2.2em;
      margin-bottom: 20px;
    }

    .page-app__cta-text {
      color: #fff;
      font-size: 1.1em;
      margin-bottom: 30px;
    }

    /* Responsive adjustments */
    @media (max-width: 768px) {
      .page-app__hero-section {
        padding-top: 160px; /* Mobile padding-top */
      }
      .page-app__hero-title {
        font-size: 2.2em;
      }
      .page-app__hero-description {
        font-size: 1em;
      }
      .page-app__heading {
        font-size: 2em;
      }
      .page-app__features-grid,
      .page-app__game-grid,
      .page-app__providers-grid {
        grid-template-columns: 1fr;
      }
      .page-app__step-item {
        flex-direction: column;
        align-items: center;
        text-align: center;
      }
      .page-app__step-number {
        margin-right: 0;
        margin-bottom: 15px;
      }
      .page-app__download-buttons {
        flex-direction: column;
        align-items: center;
      }
      .page-app__download-button {
        width: 80%;
      }
      .page-app__faq-question,
      .page-app__faq-question h3 {
        font-size: 1em;
        padding: 15px 20px;
      }
      .page-app__faq-answer {
        padding: 0 20px;
      }
      .page-app__faq-item.active .page-app__faq-answer {
        padding: 15px 20px !important;
      }
      .page-app__cta-title {
        font-size: 1.8em;
      }
      /* Image responsive optimization with !important */
      .page-app__hero-image,
      .page-app__feature-icon,
      .page-app__game-image,
      .page-app__provider-logo,
      .page-app__download-icon {
        max-width: 100% !important;
        height: auto !important;
        min-width: 200px !important; /* Ensure min size on mobile too */
        min-height: 200px !important; /* Ensure min size on mobile too */
      }
      .page-app__hero-image-wrapper,
      .page-app__feature-icon-wrapper,
      .page-app__game-image-wrapper,
      .page-app__provider-logo-wrapper,
      .page-app__download-icon-wrapper {
        width: 100% !important;
        max-width: 100% !important;
        overflow: hidden !important;
        box-sizing: border-box !important;
      }
    }