.page-about-us {
  font-family: 'Arial', sans-serif;
  line-height: 1.6;
  color: #F3F8FF; /* Text Main */
  background-color: #08162B; /* Deep Navy from body */
}

.page-about-us__container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 20px;
}

.page-about-us__container--center-text {
  text-align: center;
}

.page-about-us__dark-bg {
  background-color: #08162B; /* Deep Navy */
  color: #F3F8FF; /* Text Main */
}

.page-about-us__light-bg {
  background-color: #10233F; /* Card BG */
  color: #F3F8FF; /* Text Main */
}

.page-about-us__hero-section {
  padding-top: 10px; /* Small top padding, body handles --header-offset */
  padding-bottom: 60px;
  padding-left: 0;
  padding-right: 0;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.page-about-us__hero-image-wrapper {
  width: 100%;
  max-width: 100%;
  overflow: hidden;
  box-sizing: border-box;
}

.page-about-us__hero-image {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  border-radius: 0 0 15px 15px;
}

.page-about-us__hero-content {
  max-width: 900px;
  margin-top: 40px;
  padding: 0 20px;
}

.page-about-us__main-title {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 700;
  color: #F2C14E; /* Gold */
  margin-bottom: 20px;
  line-height: 1.2;
}

.page-about-us__hero-description {
  font-size: 1.15rem;
  color: #AFC4E8; /* Text Secondary */
  margin-bottom: 30px;
}

.page-about-us__section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  color: #F2C14E; /* Gold */
  text-align: center;
  margin-bottom: 40px;
  position: relative;
  padding-bottom: 15px;
}

.page-about-us__section-title::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background-color: #1D5FD1; /* Auxiliary color */
  border-radius: 2px;
}

.page-about-us__section-description {
  font-size: 1.1rem;
  color: #AFC4E8; /* Text Secondary */
  text-align: center;
  max-width: 800px;
  margin: 0 auto 50px auto;
}

.page-about-us__sub-title {
  font-size: 1.8rem;
  font-weight: 600;
  color: #F3F8FF; /* Text Main */
  margin-top: 30px;
  margin-bottom: 15px;
}

.page-about-us__content-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
  margin-top: 40px;
}

.page-about-us__content-grid--reverse {
  grid-template-areas: "image text";
}

.page-about-us__content-grid--reverse .page-about-us__image-wrapper {
  grid-area: image;
}

.page-about-us__content-grid--reverse .page-about-us__text-block {
  grid-area: text;
}

.page-about-us__text-block p {
  margin-bottom: 15px;
  color: #AFC4E8; /* Text Secondary */
}

.page-about-us__image-wrapper {
  text-align: center;
}

.page-about-us__image {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: 10px;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

.page-about-us__game-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 50px;
}

.page-about-us__game-card {
  background-color: #10233F; /* Card BG */
  border-radius: 15px;
  overflow: hidden;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
  padding: 25px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-about-us__game-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 25px rgba(0, 0, 0, 0.4);
}

.page-about-us__game-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 10px;
  margin-bottom: 20px;
}

.page-about-us__game-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.page-about-us__game-title a {
  color: #F2C14E; /* Gold */
  text-decoration: none;
  transition: color 0.3s ease;
}

.page-about-us__game-title a:hover {
  color: #4FA8FF; /* Glow */
}

.page-about-us__game-card p {
  color: #AFC4E8; /* Text Secondary */
  font-size: 0.95rem;
  flex-grow: 1;
}

.page-about-us__promo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 50px;
}

.page-about-us__promo-card {
  background-color: #10233F; /* Card BG */
  border-radius: 15px;
  overflow: hidden;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
  padding: 25px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-about-us__promo-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 25px rgba(0, 0, 0, 0.4);
}

.page-about-us__promo-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 10px;
  margin-bottom: 20px;
}

.page-about-us__promo-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.page-about-us__promo-title a {
  color: #F2C14E; /* Gold */
  text-decoration: none;
  transition: color 0.3s ease;
}

.page-about-us__promo-title a:hover {
  color: #4FA8FF; /* Glow */
}

.page-about-us__promo-card p {
  color: #AFC4E8; /* Text Secondary */
  font-size: 0.95rem;
  flex-grow: 1;
}

.page-about-us__cta-buttons {
  display: flex;
  gap: 20px;
  margin-top: 30px;
  justify-content: center;
  flex-wrap: wrap; /* Allow wrapping for multiple buttons */
}

.page-about-us__cta-buttons--center {
  justify-content: center;
}

.page-about-us__btn-primary,
.page-about-us__btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 30px;
  border-radius: 8px;
  font-size: 1.1rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s ease;
  cursor: pointer;
  max-width: 100%; /* Ensure button adapts to container */
  box-sizing: border-box;
  white-space: normal;
  word-wrap: break-word;
}

.page-about-us__btn-primary {
  background: linear-gradient(180deg, #2B73F6 0%, #1144A6 100%); /* Button color */
  color: #F3F8FF; /* Text Main */
  border: 2px solid transparent;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.page-about-us__btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
  background: linear-gradient(180deg, #1144A6 0%, #2B73F6 100%);
}

.page-about-us__btn-secondary {
  background: transparent;
  color: #1D5FD1; /* Auxiliary color */
  border: 2px solid #1D5FD1; /* Auxiliary color */
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.page-about-us__btn-secondary:hover {
  transform: translateY(-3px);
  background-color: #1D5FD1;
  color: #F3F8FF; /* Text Main */
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.page-about-us__app-download-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-top: 50px;
}

.page-about-us__app-card {
  background-color: #10233F; /* Card BG */
  border-radius: 15px;
  overflow: hidden;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
  padding: 30px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.page-about-us__app-icon {
  width: 120px;
  height: 120px;
  object-fit: contain;
  margin-bottom: 20px;
}

.page-about-us__app-title {
  font-size: 1.6rem;
  font-weight: 600;
  color: #F3F8FF; /* Text Main */
  margin-bottom: 10px;
}

.page-about-us__app-card p {
  color: #AFC4E8; /* Text Secondary */
  font-size: 1rem;
  margin-bottom: 25px;
  flex-grow: 1;
}

.page-about-us__faq-list {
  margin-top: 40px;
}

.page-about-us__faq-item {
  background-color: #10233F; /* Card BG */
  border-radius: 10px;
  margin-bottom: 15px;
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
  overflow: hidden;
}

.page-about-us__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 25px;
  cursor: pointer;
  font-size: 1.2rem;
  font-weight: 600;
  color: #F3F8FF; /* Text Main */
  user-select: none;
  background-color: #1B3357; /* Divider - slightly darker for summary */
}

.page-about-us__faq-question:hover {
  background-color: #244D84; /* Border color for hover */
}

.page-about-us__faq-item[open] .page-about-us__faq-question {
  background-color: #244D84; /* Border color when open */
}

.page-about-us__faq-qtext {
  flex-grow: 1;
}

.page-about-us__faq-toggle {
  font-size: 1.8rem;
  line-height: 1;
  margin-left: 15px;
  color: #F2C14E; /* Gold */
}

.page-about-us__faq-item[open] .page-about-us__faq-toggle {
  content: '−';
}

.page-about-us__faq-answer {
  padding: 0 25px 20px 25px;
  color: #AFC4E8; /* Text Secondary */
  font-size: 1rem;
  line-height: 1.7;
}

.page-about-us__faq-item:not([open]) .page-about-us__faq-answer {
  display: none; /* Hide answer when details is not open */
}

.page-about-us__faq-item summary::-webkit-details-marker {
  display: none;
}

.page-about-us__faq-item summary::marker {
  display: none;
}

/* Responsive styles */
@media (max-width: 1024px) {
  .page-about-us__container {
    padding: 30px 15px;
  }

  .page-about-us__hero-content {
    margin-top: 30px;
  }

  .page-about-us__main-title {
    font-size: clamp(2rem, 4.5vw, 3rem);
  }

  .page-about-us__hero-description {
    font-size: 1.05rem;
  }

  .page-about-us__section-title {
    font-size: clamp(1.8rem, 3.5vw, 2.5rem);
    margin-bottom: 30px;
  }

  .page-about-us__section-description {
    margin-bottom: 40px;
  }

  .page-about-us__sub-title {
    font-size: 1.6rem;
  }

  .page-about-us__content-grid {
    gap: 30px;
  }

  .page-about-us__game-grid,
  .page-about-us__promo-grid,
  .page-about-us__app-download-grid {
    gap: 20px;
  }

  .page-about-us__btn-primary,
  .page-about-us__btn-secondary {
    padding: 12px 25px;
    font-size: 1rem;
  }

  .page-about-us__faq-question {
    font-size: 1.1rem;
    padding: 18px 20px;
  }

  .page-about-us__faq-answer {
    padding: 0 20px 18px 20px;
  }
}

@media (max-width: 768px) {
  /* HERO 主图区域 */
  .page-about-us__hero-section {
    padding-top: 10px !important; /* Small top padding for mobile */
    padding-bottom: 40px;
  }

  .page-about-us__hero-image-wrapper {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }

  .page-about-us__hero-image {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
  }

  .page-about-us__hero-content {
    margin-top: 25px;
    padding: 0 15px;
  }

  .page-about-us__main-title {
    font-size: clamp(1.8rem, 7vw, 2.5rem);
    margin-bottom: 15px;
  }

  .page-about-us__hero-description {
    font-size: 0.95rem;
    margin-bottom: 25px;
  }

  /* 其他内容模块 */
  .page-about-us__container {
    padding: 25px 15px;
  }

  .page-about-us__section-title {
    font-size: clamp(1.6rem, 6vw, 2.2rem);
    margin-bottom: 25px;
  }

  .page-about-us__section-description {
    margin-bottom: 30px;
    font-size: 0.9rem;
  }

  .page-about-us__sub-title {
    font-size: 1.4rem;
    margin-top: 25px;
    margin-bottom: 10px;
  }

  .page-about-us__text-block p {
    font-size: 0.9rem;
  }

  /* 通用图片与容器 */
  .page-about-us img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
  }

  .page-about-us__section,
  .page-about-us__card,
  .page-about-us__container {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
  }
  
  .page-about-us__content-grid {
    grid-template-columns: 1fr;
    gap: 30px;
    margin-top: 30px;
  }

  .page-about-us__content-grid--reverse {
    grid-template-areas: unset; /* Reset grid area for single column */
  }

  .page-about-us__game-grid,
  .page-about-us__promo-grid,
  .page-about-us__app-download-grid {
    grid-template-columns: 1fr;
    gap: 20px;
    margin-top: 30px;
  }

  .page-about-us__game-card,
  .page-about-us__promo-card,
  .page-about-us__app-card {
    padding: 20px;
  }

  .page-about-us__game-image,
  .page-about-us__promo-image {
    height: 180px;
    margin-bottom: 15px;
  }

  .page-about-us__game-title,
  .page-about-us__promo-title {
    font-size: 1.3rem;
  }

  .page-about-us__game-card p,
  .page-about-us__promo-card p {
    font-size: 0.85rem;
  }

  .page-about-us__app-icon {
    width: 100px;
    height: 100px;
    margin-bottom: 15px;
  }

  .page-about-us__app-title {
    font-size: 1.4rem;
  }

  .page-about-us__app-card p {
    font-size: 0.9rem;
    margin-bottom: 20px;
  }

  /* 按钮与按钮容器 */
  .page-about-us__cta-buttons {
    flex-direction: column;
    gap: 15px;
    margin-top: 25px;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
  }

  .page-about-us__btn-primary,
  .page-about-us__btn-secondary {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    white-space: normal !important;
    word-wrap: break-word !important;
    padding: 12px 20px;
    font-size: 1rem;
  }

  .page-about-us__faq-question {
    font-size: 1rem;
    padding: 15px 20px;
  }

  .page-about-us__faq-toggle {
    font-size: 1.5rem;
  }

  .page-about-us__faq-answer {
    font-size: 0.9rem;
    padding: 0 20px 15px 20px;
  }
}