.page-game-introduction {
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  line-height: 1.6;
  color: #333;
  background-color: #f8f9fa;
}

.page-game-introduction__container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.page-game-introduction__hero-section {
  background: linear-gradient(135deg, #1A237E 0%, #3f4a9b 100%); /* Dark blue gradient */
  color: #fff;
  padding: 80px 0;
  text-align: center;
  border-bottom: 5px solid #FFC107;
}

.page-game-introduction__hero-title {
  font-size: 2.8em;
  margin-bottom: 20px;
  font-weight: 700;
  color: #FFC107; /* Auxiliary color for highlight */
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.page-game-introduction__hero-subtitle {
  font-size: 1.3em;
  max-width: 800px;
  margin: 0 auto 30px auto;
  line-height: 1.8;
}

.page-game-introduction__section {
  padding: 60px 0;
  border-bottom: 1px solid #eee;
}

.page-game-introduction__section:last-of-type {
  border-bottom: none;
}

.page-game-introduction__section-title {
  font-size: 2.2em;
  color: #1A237E; /* Main color */
  text-align: center;
  margin-bottom: 40px;
  font-weight: 700;
  position: relative;
  padding-bottom: 15px;
}

.page-game-introduction__section-title::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background-color: #FFC107; /* Auxiliary color */
  border-radius: 2px;
}

.page-game-introduction__subsection-title {
  font-size: 1.8em;
  color: #1A237E; /* Main color */
  margin-top: 40px;
  margin-bottom: 25px;
  font-weight: 600;
  border-left: 5px solid #FFC107; /* Auxiliary color */
  padding-left: 15px;
}

.page-game-introduction__text {
  font-size: 1.1em;
  margin-bottom: 20px;
  color: #4a4a4a;
  text-align: justify;
}

.page-game-introduction__highlight {
  color: #1A237E;
  font-weight: bold;
}

.page-game-introduction__list {
  list-style: none;
  padding-left: 0;
  margin-bottom: 20px;
}

.page-game-introduction__list-item {
  position: relative;
  padding-left: 30px;
  margin-bottom: 15px;
  font-size: 1.1em;
  color: #4a4a4a;
}

.page-game-introduction__list-item::before {
  content: '✔'; /* Checkmark icon */
  color: #FFC107; /* Auxiliary color */
  position: absolute;
  left: 0;
  font-weight: bold;
  font-size: 1.2em;
  top: -2px;
}

.page-game-introduction__list--ordered {
  list-style: decimal;
  padding-left: 25px;
}

.page-game-introduction__list--ordered .page-game-introduction__list-item {
  padding-left: 0;
}

.page-game-introduction__list--ordered .page-game-introduction__list-item::before {
  content: none;
}

.page-game-introduction__sub-list {
  list-style: disc;
  padding-left: 30px;
  margin-top: 10px;
}

.page-game-introduction__sub-list .page-game-introduction__list-item::before {
  content: none;
}

.page-game-introduction__btn {
  display: inline-block;
  padding: 12px 25px;
  border-radius: 5px;
  text-decoration: none;
  font-weight: bold;
  transition: all 0.3s ease;
  font-size: 1.1em;
  text-align: center;
  cursor: pointer;
}

.page-game-introduction__btn--primary {
  background-color: #FFC107; /* Auxiliary color */
  color: #1A237E; /* Main color for text */
  border: 2px solid #FFC107;
}

.page-game-introduction__btn--primary:hover {
  background-color: #e5ad04;
  border-color: #e5ad04;
  color: #1A237E;
  transform: translateY(-2px);
}

.page-game-introduction__btn--secondary {
  background-color: #1A237E; /* Main color */
  color: #FFC107; /* Auxiliary color for text */
  border: 2px solid #1A237E;
  margin-left: 15px;
}

.page-game-introduction__btn--secondary:hover {
  background-color: #2f3a8b;
  border-color: #2f3a8b;
  color: #FFC107;
  transform: translateY(-2px);
}

.page-game-introduction__btn--large {
  padding: 15px 35px;
  font-size: 1.3em;
}

.page-game-introduction__btn--link {
  background: none;
  border: none;
  color: #1A237E; /* Main color */
  padding: 0;
  margin-left: 0;
  font-size: 1em;
  text-decoration: underline;
}

.page-game-introduction__btn--link:hover {
  color: #FFC107; /* Auxiliary color */
  text-decoration: none;
  transform: none;
}

.page-game-introduction__cta-group {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-top: 40px;
  flex-wrap: wrap;
}

.page-game-introduction__image {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 30px auto;
  border-radius: 8px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.page-game-introduction__image--full-width {
  width: 100%;
}

.page-game-introduction__image--large {
  max-width: 90%;
}

.page-game-introduction__image--medium {
  max-width: 70%;
}

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

.page-game-introduction__detail-card {
  background-color: #fff;
  border: 1px solid #ddd;
  border-radius: 8px;
  padding: 30px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-game-introduction__detail-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
}

.page-game-introduction__card-title {
  font-size: 1.5em;
  color: #1A237E; /* Main color */
  margin-bottom: 15px;
  font-weight: 600;
}

.page-game-introduction__card-title a {
  text-decoration: none;
  color: #1A237E;
}

.page-game-introduction__card-title a:hover {
  color: #FFC107; /* Auxiliary color */
  text-decoration: underline;
}

.page-game-introduction__card-description {
  font-size: 1em;
  color: #555;
  margin-bottom: 20px;
}

.page-game-introduction__faq-item {
  background-color: #fff;
  border: 1px solid #ddd;
  border-radius: 8px;
  padding: 25px;
  margin-bottom: 20px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.page-game-introduction__faq-question {
  font-size: 1.4em;
  color: #1A237E; /* Main color */
  margin-top: 0;
  margin-bottom: 15px;
  font-weight: 600;
}

.page-game-introduction__faq-answer {
  font-size: 1.1em;
  color: #555;
  margin-bottom: 10px;
  text-align: justify;
}

.page-game-introduction__call-to-action {
  background-color: #1A237E; /* Main color */
  color: #fff;
  text-align: center;
  padding: 80px 0;
}

.page-game-introduction__cta-content {
  max-width: 900px;
}

.page-game-introduction__call-to-action .page-game-introduction__section-title {
  color: #FFC107; /* Auxiliary color */
}

.page-game-introduction__call-to-action .page-game-introduction__section-title::after {
  background-color: #fff;
}

.page-game-introduction__call-to-action .page-game-introduction__text {
  color: #e0e0e0;
  margin-bottom: 40px;
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .page-game-introduction__hero-title {
    font-size: 2.2em;
  }

  .page-game-introduction__hero-subtitle {
    font-size: 1em;
  }

  .page-game-introduction__section-title {
    font-size: 1.8em;
  }

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

  .page-game-introduction__text,
  .page-game-introduction__list-item,
  .page-game-introduction__card-description,
  .page-game-introduction__faq-answer {
    font-size: 0.95em;
  }

  .page-game-introduction__btn {
    padding: 10px 20px;
    font-size: 1em;
  }

  .page-game-introduction__btn--large {
    padding: 12px 25px;
    font-size: 1.1em;
  }

  .page-game-introduction__btn--secondary {
    margin-left: 0;
    margin-top: 15px;
  }

  .page-game-introduction__cta-group {
    flex-direction: column;
    align-items: center;
  }

  .page-game-introduction__detail-list {
    grid-template-columns: 1fr;
  }

  .page-game-introduction__faq-question {
    font-size: 1.2em;
  }
}

@media (max-width: 480px) {
  .page-game-introduction__hero-section,
  .page-game-introduction__section,
  .page-game-introduction__call-to-action {
    padding: 40px 0;
  }

  .page-game-introduction__hero-title {
    font-size: 1.8em;
  }

  .page-game-introduction__section-title {
    font-size: 1.6em;
  }

  .page-game-introduction__subsection-title {
    font-size: 1.3em;
  }

  .page-game-introduction__btn {
    width: 100%;
    max-width: 280px;
  }
  .page-game-introduction__btn--secondary {
    margin-top: 10px;
    margin-left: 0;
  }
}