.page-about {
  font-family: 'Arial', sans-serif;
  line-height: 1.6;
  color: var(--text-main);
  background-color: var(--bg-color);
}

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

.page-about__section {
  padding: 60px 0;
  text-align: center;
}

.page-about__dark-section {
  background-color: var(--deep-green);
  color: var(--text-main);
}

.page-about__section-title {
  font-size: clamp(28px, 4vw, 42px);
  color: var(--gold);
  margin-bottom: 20px;
  font-weight: bold;
}

.page-about__description-text {
  font-size: 18px;
  color: var(--text-secondary);
  max-width: 800px;
  margin: 0 auto 40px auto;
}

/* Hero Section */
.page-about__hero-section {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 60px 0 0 0; /* body handles padding-top from header */
  color: var(--text-main);
  background-color: var(--bg-color);
}

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

.page-about__hero-image {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

.page-about__hero-content {
  padding: 40px 20px 60px 20px;
  max-width: 900px;
  text-align: center;
}

.page-about__main-title {
  font-size: clamp(36px, 5vw, 58px);
  font-weight: 700;
  color: var(--gold);
  margin-bottom: 20px;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.page-about__description {
  font-size: 18px;
  color: var(--text-secondary);
  margin-bottom: 30px;
}

.page-about__hero-cta {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

.page-about__btn-primary,
.page-about__btn-secondary {
  display: inline-block;
  padding: 15px 30px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: bold;
  font-size: 18px;
  transition: all 0.3s ease;
  white-space: normal;
  word-wrap: break-word;
  box-sizing: border-box;
  max-width: 100%;
}

.page-about__btn-primary {
  background: linear-gradient(180deg, #2AD16F 0%, #13994A 100%);
  color: #ffffff;
  border: none;
}

.page-about__btn-primary:hover {
  opacity: 0.9;
  transform: translateY(-2px);
}

.page-about__btn-secondary {
  background: none;
  color: var(--gold);
  border: 2px solid var(--gold);
}

.page-about__btn-secondary:hover {
  background: var(--gold);
  color: var(--deep-green);
  transform: translateY(-2px);
}

/* Mission & Vision */
.page-about__mission-vision .page-about__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  text-align: left;
}

.page-about__mission-vision .page-about__card {
  background-color: var(--card-bg);
  border-radius: 12px;
  padding: 30px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
  border: 1px solid var(--border);
  color: var(--text-main);
}

.page-about__mission-vision .page-about__card-title {
  font-size: 24px;
  color: var(--gold);
  margin-bottom: 15px;
}

.page-about__mission-vision .page-about__card-text {
  font-size: 16px;
  color: var(--text-secondary);
}

/* Why Choose Us */
.page-about__why-choose-us .page-about__features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.page-about__feature-item {
  text-align: center;
  padding: 20px;
  border-radius: 12px;
  background-color: var(--card-bg);
  border: 1px solid var(--border);
  color: var(--text-main);
  transition: transform 0.3s ease;
}

.page-about__feature-item:hover {
  transform: translateY(-5px);
}

.page-about__feature-icon {
  width: 100px;
  height: 100px;
  object-fit: contain;
  margin-bottom: 20px;
  max-width: 100%;
  height: auto;
  display: block;
  margin-left: auto;
  margin-right: auto;
}

.page-about__feature-title {
  font-size: 22px;
  color: var(--gold);
  margin-bottom: 10px;
}

.page-about__feature-text {
  font-size: 16px;
  color: var(--text-secondary);
}

/* Our Values */
.page-about__our-values .page-about__values-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.page-about__value-item {
  background-color: var(--card-bg);
  border-radius: 12px;
  padding: 30px;
  text-align: left;
  border: 1px solid var(--border);
  color: var(--text-main);
}

.page-about__value-title {
  font-size: 22px;
  color: var(--gold);
  margin-bottom: 10px;
}

.page-about__value-description {
  font-size: 16px;
  color: var(--text-secondary);
}

/* History & Milestones */
.page-about__history-milestones .page-about__timeline {
  position: relative;
  max-width: 800px;
  margin: 50px auto;
}

.page-about__history-milestones .page-about__timeline::after {
  content: '';
  position: absolute;
  width: 4px;
  background-color: var(--glow);
  top: 0;
  bottom: 0;
  left: 50%;
  margin-left: -2px;
}

.page-about__timeline-item {
  padding: 10px 40px;
  position: relative;
  background-color: inherit;
  width: 50%;
}

.page-about__timeline-item::after {
  content: '';
  position: absolute;
  width: 25px;
  height: 25px;
  right: -17px;
  background-color: var(--deep-green);
  border: 4px solid var(--glow);
  top: 15px;
  border-radius: 50%;
  z-index: 1;
}

.page-about__timeline-item:nth-child(odd) {
  left: 0;
  text-align: right;
}

.page-about__timeline-item:nth-child(even) {
  left: 50%;
  text-align: left;
}

.page-about__timeline-item:nth-child(even)::after {
  left: -16px;
}

.page-about__timeline-year {
  font-size: 20px;
  font-weight: bold;
  color: var(--gold);
  margin-bottom: 10px;
}

.page-about__timeline-content {
  padding: 20px 30px;
  background-color: var(--card-bg);
  position: relative;
  border-radius: 12px;
  border: 1px solid var(--border);
  color: var(--text-main);
}

.page-about__timeline-title {
  font-size: 20px;
  color: var(--gold);
  margin-bottom: 10px;
}

.page-about__timeline-text {
  font-size: 16px;
  color: var(--text-secondary);
}

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

.page-about__responsible-callout {
  font-size: 18px;
  font-weight: bold;
  color: var(--glow);
  margin-top: 40px;
}

/* FAQ */
.page-about__faq-list {
  max-width: 900px;
  margin: 40px auto;
  text-align: left;
}

.page-about__faq-item {
  background-color: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  margin-bottom: 15px;
  overflow: hidden;
  color: var(--text-main);
}

.page-about__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 25px;
  font-size: 18px;
  font-weight: bold;
  color: var(--gold);
  cursor: pointer;
  user-select: none;
  background-color: var(--card-bg);
  position: relative;
}

.page-about__faq-question::marker,
.page-about__faq-question::-webkit-details-marker {
  display: none;
}

.page-about__faq-toggle {
  font-size: 24px;
  font-weight: bold;
  color: var(--glow);
  transition: transform 0.3s ease;
}

.page-about__faq-item[open] .page-about__faq-toggle {
  transform: rotate(45deg);
}

.page-about__faq-answer {
  padding: 0 25px 20px 25px;
  font-size: 16px;
  color: var(--text-secondary);
}

.page-about__faq-answer p {
  margin-bottom: 15px;
}

.page-about__faq-answer .page-about__btn-link {
  display: inline-block;
  margin-top: 10px;
  color: var(--glow);
  text-decoration: none;
  font-weight: bold;
}

.page-about__faq-answer .page-about__btn-link:hover {
  text-decoration: underline;
}

/* Contact Us */
.page-about__contact-info {
  margin-top: 40px;
  font-size: 18px;
  color: var(--text-secondary);
}

.page-about__contact-info p {
  margin-bottom: 10px;
}

.page-about__contact-info strong {
  color: var(--gold);
}

.page-about__contact-cta {
  margin-top: 40px;
}

/* Responsive */
@media (max-width: 992px) {
  .page-about__timeline-item {
    width: 100%;
    padding-left: 30px;
    padding-right: 10px;
  }

  .page-about__timeline-item:nth-child(even) {
    left: 0;
    text-align: left;
  }

  .page-about__timeline-item:nth-child(odd) {
    text-align: left;
  }

  .page-about__timeline-item::after,
  .page-about__timeline-item:nth-child(even)::after {
    left: -15px;
  }

  .page-about__timeline::after {
    left: 15px;
  }
}

@media (max-width: 768px) {
  .page-about__section {
    padding: 40px 0;
  }

  .page-about__main-title {
    font-size: clamp(30px, 8vw, 48px);
  }

  .page-about__description {
    font-size: 16px;
  }

  .page-about__hero-cta {
    flex-direction: column;
    gap: 15px;
  }

  .page-about__btn-primary,
  .page-about__btn-secondary {
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
    padding: 12px 20px;
    font-size: 16px;
  }

  .page-about__hero-section .page-about__hero-content {
    padding: 30px 15px 40px 15px;
  }

  .page-about__container {
    padding: 0 15px;
  }

  .page-about__section-title {
    font-size: clamp(24px, 6vw, 36px);
  }

  .page-about__description-text {
    font-size: 15px;
    margin-bottom: 30px;
  }

  .page-about__mission-vision .page-about__grid,
  .page-about__why-choose-us .page-about__features-grid,
  .page-about__our-values .page-about__values-list,
  .page-about__responsible-features {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .page-about__feature-icon {
    width: 80px;
    height: 80px;
  }

  .page-about__feature-title,
  .page-about__value-title {
    font-size: 20px;
  }

  .page-about__feature-text,
  .page-about__value-description {
    font-size: 15px;
  }

  .page-about__faq-question {
    font-size: 16px;
    padding: 15px 20px;
  }

  .page-about__faq-answer {
    font-size: 15px;
    padding: 0 20px 15px 20px;
  }

  /* Ensure images and containers are responsive */
  .page-about img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
  }

  .page-about__section,
  .page-about__card,
  .page-about__container,
  .page-about__hero-image-wrapper {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    overflow-x: hidden !important;
  }

  .page-about__video-section { /* If a video section were present */
    padding-top: 10px !important;
  }

  .page-about__cta-buttons, /* button container */
  .page-about__button-group,
  .page-about__btn-container {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
    flex-wrap: wrap !important;
    gap: 10px;
  }
  .page-about__cta-buttons {
    flex-direction: column;
  }
}

/* Color contrast specific styles */
.page-about__dark-section {
  color: #ffffff; /* 深色背景配浅色文字 */
  background-color: var(--deep-green);
}

.page-about__btn-primary {
  background: linear-gradient(180deg, #2AD16F 0%, #13994A 100%);
  color: #ffffff; /* 按钮文字始终使用白色 */
}

.page-about__btn-secondary {
  background: none;
  color: var(--gold); /* 使用品牌色确保对比度 */
  border: 2px solid var(--gold);
}

.page-about__card,
.page-about__feature-item,
.page-about__value-item,
.page-about__timeline-content,
.page-about__faq-item {
  background-color: var(--card-bg);
  color: var(--text-main);
  border: 1px solid var(--border);
}

.page-about p,
.page-about li,
.page-about__description,
.page-about__description-text,
.page-about__card-text,
.page-about__feature-text,
.page-about__value-description,
.page-about__timeline-text,
.page-about__responsible-callout,
.page-about__contact-info p {
  color: var(--text-secondary);
}

.page-about__section-title,
.page-about__main-title,
.page-about__card-title,
.page-about__feature-title,
.page-about__value-title,
.page-about__timeline-title,
.page-about__timeline-year,
.page-about__contact-info strong,
.page-about__faq-question {
  color: var(--gold);
}

.page-about__faq-toggle,
.page-about__faq-answer .page-about__btn-link {
  color: var(--glow);
}