:root {
      --page-13-bet-app__primary-color: #e44d26; /* Cam */
      --page-13-bet-app__secondary-color: #333333; /* Xám đậm */
      --page-13-bet-app__accent-color: #f7b731; /* Vàng */
      --page-13-bet-app__background-light: #f8f8f8;
      --page-13-bet-app__background-dark: #222222;
      --page-13-bet-app__text-light: #ffffff;
      --page-13-bet-app__text-dark: #333333;
      --page-13-bet-app__border-color: #e0e0e0;
      --page-13-bet-app__spacing-unit: 15px;
    }

    .page-13-bet-app {
      font-family: 'Arial', sans-serif;
      line-height: 1.6;
      color: var(--page-13-bet-app__text-dark);
      background-color: var(--page-13-bet-app__background-light);
      padding-top: var(--header-offset, 122px); /* Fallback for header offset */
    }

    .page-13-bet-app__section {
      padding: calc(2 * var(--page-13-bet-app__spacing-unit)) var(--page-13-bet-app__spacing-unit);
      margin-bottom: var(--page-13-bet-app__spacing-unit);
      background-color: var(--page-13-bet-app__text-light);
      border-radius: 8px;
      box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
      max-width: 1200px;
      margin-left: auto;
      margin-right: auto;
    }

    .page-13-bet-app__section--dark {
      background-color: var(--page-13-bet-app__background-dark);
      color: var(--page-13-bet-app__text-light);
    }

    .page-13-bet-app__section-title {
      text-align: center;
      color: var(--page-13-bet-app__primary-color);
      margin-bottom: calc(2 * var(--page-13-bet-app__spacing-unit));
      font-size: 2.2em;
      font-weight: bold;
    }

    .page-13-bet-app__section--dark .page-13-bet-app__section-title {
      color: var(--page-13-bet-app__accent-color);
    }

    .page-13-bet-app__text-center {
      text-align: center;
    }

    /* Hero Section */
    .page-13-bet-app__hero-section {
      padding-top: 10px; /* Small decorative top padding, main offset handled by body */
      padding-bottom: calc(4 * var(--page-13-bet-app__spacing-unit));
      background: linear-gradient(135deg, var(--page-13-bet-app__primary-color), #ff7e5f);
      color: var(--page-13-bet-app__text-light);
      text-align: center;
      border-radius: 0;
      box-shadow: none;
      margin-bottom: 0;
    }

    .page-13-bet-app__hero-content {
      max-width: 900px;
      margin: 0 auto;
      padding: var(--page-13-bet-app__spacing-unit);
    }

    .page-13-bet-app__hero-title {
      font-size: 3em;
      margin-bottom: var(--page-13-bet-app__spacing-unit);
      color: var(--page-13-bet-app__text-light);
      line-height: 1.2;
    }

    .page-13-bet-app__hero-subtitle {
      font-size: 1.5em;
      margin-bottom: calc(2 * var(--page-13-bet-app__spacing-unit));
      opacity: 0.9;
    }

    .page-13-bet-app__hero-image {
      max-width: 100%;
      height: auto;
      border-radius: 12px;
      box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
      display: block;
      margin: calc(3 * var(--page-13-bet-app__spacing-unit)) auto 0 auto;
    }

    /* Floating Buttons */
    .page-13-bet-app__floating-buttons {
      position: fixed;
      bottom: var(--page-13-bet-app__spacing-unit);
      left: 0;
      right: 0;
      display: flex;
      justify-content: center;
      gap: var(--page-13-bet-app__spacing-unit);
      padding: var(--page-13-bet-app__spacing-unit);
      background-color: rgba(0, 0, 0, 0.7);
      z-index: 1000;
      border-top-left-radius: 10px;
      border-top-right-radius: 10px;
      box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.2);
    }

    .page-13-bet-app__button {
      display: inline-block;
      padding: var(--page-13-bet-app__spacing-unit) calc(2 * var(--page-13-bet-app__spacing-unit));
      background-color: var(--page-13-bet-app__accent-color);
      color: var(--page-13-bet-app__text-dark);
      text-decoration: none;
      border-radius: 30px;
      font-weight: bold;
      transition: background-color 0.3s ease, transform 0.2s ease;
      text-align: center;
      white-space: nowrap;
      cursor: pointer;
      border: none;
      font-size: 1em;
    }

    .page-13-bet-app__button:hover {
      background-color: #f5a623;
      transform: translateY(-2px);
    }

    .page-13-bet-app__button--primary {
      background-color: var(--page-13-bet-app__primary-color);
      color: var(--page-13-bet-app__text-light);
    }

    .page-13-bet-app__button--primary:hover {
      background-color: #cc421f;
    }

    /* Game Categories */
    .page-13-bet-app__game-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: calc(1.5 * var(--page-13-bet-app__spacing-unit));
      margin-top: calc(2 * var(--page-13-bet-app__spacing-unit));
    }

    .page-13-bet-app__game-card {
      background-color: var(--page-13-bet-app__background-light);
      border-radius: 8px;
      overflow: hidden;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      text-align: center;
      display: flex;
      flex-direction: column;
      height: 100%;
    }

    .page-13-bet-app__game-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 6px 15px rgba(0, 0, 0, 0.15);
    }

    .page-13-bet-app__game-card-image {
      width: 100%;
      height: 200px;
      object-fit: cover;
      display: block;
    }

    .page-13-bet-app__game-card-content {
      padding: var(--page-13-bet-app__spacing-unit);
      flex-grow: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .page-13-bet-app__game-card-title {
      font-size: 1.3em;
      color: var(--page-13-bet-app__primary-color);
      margin-bottom: var(--page-13-bet-app__spacing-unit);
      font-weight: bold;
    }

    .page-13-bet-app__game-card-description {
      font-size: 0.95em;
      color: var(--page-13-bet-app__secondary-color);
      margin-bottom: var(--page-13-bet-app__spacing-unit);
      flex-grow: 1;
    }

    /* Promotions Section */
    .page-13-bet-app__promotion-list {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: calc(1.5 * var(--page-13-bet-app__spacing-unit));
      margin-top: calc(2 * var(--page-13-bet-app__spacing-unit));
    }

    .page-13-bet-app__promotion-card {
      background-color: var(--page-13-bet-app__text-light);
      border: 1px solid var(--page-13-bet-app__border-color);
      border-radius: 8px;
      overflow: hidden;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
      transition: transform 0.3s ease;
      display: flex;
      flex-direction: column;
      height: 100%;
    }

    .page-13-bet-app__promotion-card:hover {
      transform: translateY(-3px);
    }

    .page-13-bet-app__promotion-image {
      width: 100%;
      height: 220px;
      object-fit: cover;
      display: block;
    }

    .page-13-bet-app__promotion-content {
      padding: var(--page-13-bet-app__spacing-unit);
      flex-grow: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .page-13-bet-app__promotion-title {
      font-size: 1.4em;
      color: var(--page-13-bet-app__primary-color);
      margin-bottom: var(--page-13-bet-app__spacing-unit);
      font-weight: bold;
    }

    .page-13-bet-app__promotion-description {
      font-size: 0.95em;
      color: var(--page-13-bet-app__secondary-color);
      margin-bottom: var(--page-13-bet-app__spacing-unit);
      flex-grow: 1;
    }

    /* Providers & Payments */
    .page-13-bet-app__logo-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
      gap: var(--page-13-bet-app__spacing-unit);
      margin-top: calc(2 * var(--page-13-bet-app__spacing-unit));
      justify-items: center;
      align-items: center;
    }

    .page-13-bet-app__logo-item {
      padding: var(--page-13-bet-app__spacing-unit);
      background-color: var(--page-13-bet-app__text-light);
      border-radius: 8px;
      box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
      text-align: center;
      display: flex;
      justify-content: center;
      align-items: center;
      min-height: 100px;
    }

    .page-13-bet-app__logo-image {
      max-width: 100%;
      max-height: 80px;
      height: auto;
      object-fit: contain;
    }

    /* FAQ Section */
    .page-13-bet-app__faq-container {
      margin-top: calc(2 * var(--page-13-bet-app__spacing-unit));
    }

    .page-13-bet-app__faq-item {
      background-color: var(--page-13-bet-app__text-light);
      border: 1px solid var(--page-13-bet-app__border-color);
      border-radius: 8px;
      margin-bottom: var(--page-13-bet-app__spacing-unit);
      overflow: hidden;
    }

    .page-13-bet-app__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: var(--page-13-bet-app__spacing-unit) calc(1.5 * var(--page-13-bet-app__spacing-unit));
      background-color: #f0f0f0;
      cursor: pointer;
      user-select: none;
      font-weight: bold;
      color: var(--page-13-bet-app__secondary-color);
      transition: background-color 0.3s ease;
    }

    .page-13-bet-app__faq-question h3 {
      margin: 0;
      font-size: 1.1em;
      color: var(--page-13-bet-app__primary-color);
      pointer-events: none; /* Prevent h3 from blocking click event */
    }

    .page-13-bet-app__faq-question:hover {
      background-color: #e8e8e8;
    }

    .page-13-bet-app__faq-toggle {
      font-size: 1.5em;
      line-height: 1;
      transition: transform 0.3s ease;
      pointer-events: none; /* Prevent toggle from blocking click event */
      color: var(--page-13-bet-app__primary-color);
    }

    .page-13-bet-app__faq-item.active .page-13-bet-app__faq-toggle {
      transform: rotate(45deg); /* Change '+' to 'x' visually */
    }

    .page-13-bet-app__faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 var(--page-13-bet-app__spacing-unit); /* Initial horizontal padding */
      transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
      opacity: 0;
      color: var(--page-13-bet-app__text-dark);
    }

    .page-13-bet-app__faq-item.active .page-13-bet-app__faq-answer {
      max-height: 2000px !important; /* Sufficiently large to contain content */
      padding: var(--page-13-bet-app__spacing-unit) calc(1.5 * var(--page-13-bet-app__spacing-unit)) !important; /* Ensure correct padding when active */
      opacity: 1;
    }

    /* CTA Section */
    .page-13-bet-app__cta-section {
      text-align: center;
      padding: calc(4 * var(--page-13-bet-app__spacing-unit)) var(--page-13-bet-app__spacing-unit);
      background-color: var(--page-13-bet-app__primary-color);
      color: var(--page-13-bet-app__text-light);
      border-radius: 8px;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
      margin-bottom: calc(4 * var(--page-13-bet-app__spacing-unit)); /* Space for floating buttons */
    }

    .page-13-bet-app__cta-title {
      font-size: 2.5em;
      margin-bottom: var(--page-13-bet-app__spacing-unit);
      color: var(--page-13-bet-app__text-light);
    }

    .page-13-bet-app__cta-description {
      font-size: 1.2em;
      margin-bottom: calc(2 * var(--page-13-bet-app__spacing-unit));
      opacity: 0.9;
    }

    /* Responsive Design */
    @media (max-width: 768px) {
      .page-13-bet-app {
        padding-top: var(--header-offset, 100px); /* Adjust for smaller header on mobile */
      }

      .page-13-bet-app__hero-title {
        font-size: 2.2em;
      }

      .page-13-bet-app__hero-subtitle {
        font-size: 1.2em;
      }

      .page-13-bet-app__section-title {
        font-size: 1.8em;
      }

      .page-13-bet-app__game-grid,
      .page-13-bet-app__promotion-list,
      .page-13-bet-app__logo-grid {
        grid-template-columns: 1fr;
        gap: var(--page-13-bet-app__spacing-unit);
      }

      .page-13-bet-app__game-card-image,
      .page-13-bet-app__promotion-image {
        height: 180px;
      }

      .page-13-bet-app__faq-question {
        padding: var(--page-13-bet-app__spacing-unit);
      }

      .page-13-bet-app__faq-question h3 {
        font-size: 1em;
      }

      .page-13-bet-app__faq-answer {
        padding: 0 var(--page-13-bet-app__spacing-unit);
      }

      .page-13-bet-app__faq-item.active .page-13-bet-app__faq-answer {
        padding: var(--page-13-bet-app__spacing-unit) !important;
      }

      .page-13-bet-app__cta-title {
        font-size: 2em;
      }

      .page-13-bet-app__cta-description {
        font-size: 1em;
      }

      /* List item mobile responsiveness */
      .page-13-bet-app__game-grid > *,
      .page-13-bet-app__promotion-list > *,
      .page-13-bet-app__logo-grid > * {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
        word-wrap: break-word !important;
        overflow-wrap: break-word !important;
        word-break: break-word !important;
      }

      .page-13-bet-app__game-grid,
      .page-13-bet-app__promotion-list,
      .page-13-bet-app__logo-grid {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        padding: 0 !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
      }

      .page-13-bet-app__logo-item {
        min-height: 80px;
      }
    }

    @media (max-width: 480px) {
      .page-13-bet-app__floating-buttons {
        gap: 10px;
      }
      .page-13-bet-app__button {
        padding: 10px 15px;
        font-size: 0.9em;
      }
    }

    /* Image responsiveness for all images */
    .page-13-bet-app img {
      max-width: 100% !important;
      height: auto !important;
      display: block; /* Remove extra space below images */
    }

    .page-13-bet-app__hero-image,
    .page-13-bet-app__game-card-image,
    .page-13-bet-app__promotion-image,
    .page-13-bet-app__logo-image {
        max-width: 100% !important;
        height: auto !important;
        object-fit: cover;
    }

    /* Ensure image containers are responsive */
    .page-13-bet-app__game-card,
    .page-13-bet-app__promotion-card,
    .page-13-bet-app__logo-item {
        width: 100%;
        max-width: 100%;
        overflow: hidden;
        box-sizing: border-box;
    }

    @media (max-width: 768px) {
      .page-13-bet-app img {
        max-width: 100% !important;
        height: auto !important;
      }
      .page-13-bet-app__hero-image,
      .page-13-bet-app__game-card-image,
      .page-13-bet-app__promotion-image,
      .page-13-bet-app__logo-image {
          max-width: 100% !important;
          height: auto !important;
      }
      .page-13-bet-app__game-card,
      .page-13-bet-app__promotion-card,
      .page-13-bet-app__logo-item {
          width: 100% !important;
          max-width: 100% !important;
          box-sizing: border-box !important;
      }
    }