:root {
  --primary-color: #113B7A;
  --secondary-color: #1D5FD1;
  --button-gradient: linear-gradient(180deg, #2B73F6 0%, #1144A6 100%);
  --card-bg: #10233F;
  --text-main: #F3F8FF;
  --text-secondary: #AFC4E8;
  --border-color: #244D84;
  --glow-color: #4FA8FF;
  --gold-color: #F2C14E;
  --divider-color: #1B3357;
  --deep-navy: #08162B;
}

.page-about {
  font-family: Arial, sans-serif;
  color: var(--text-main); /* Default text color for dark body background */
  background-color: var(--deep-navy); /* Assumed from shared.css */
  line-height: 1.6;
}

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

.page-about__section-title {
  font-size: 2.5em;
  font-weight: 700;
  color: var(--gold-color);
  text-align: center;
  margin-bottom: 40px;
  padding-top: 40px;
}

.page-about__hero-section {
  position: relative;
  padding-top: 10px; /* Small top padding, assuming body has header offset */
  padding-bottom: 60px;
  background: var(--deep-navy);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.page-about__hero-image-wrapper {
  width: 100%;
  max-width: 100%;
  overflow: hidden;
  box-sizing: border-box;
  margin-bottom: 30px;
}

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

.page-about__hero-content {
  max-width: 900px;
  z-index: 1;
}

.page-about__main-title {
  font-size: clamp(2em, 4vw, 3.5em);
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 20px;
  line-height: 1.2;
}

.page-about__intro-text {
  font-size: 1.1em;
  color: var(--text-secondary);
  margin-bottom: 30px;
}

.page-about__btn-primary,
.page-about__btn-secondary {
  display: inline-block;
  padding: 14px 30px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.1em;
  transition: all 0.3s ease;
  cursor: pointer;
  text-align: center;
  max-width: 100%; /* For responsiveness */
  box-sizing: border-box;
  white-space: normal;
  word-wrap: break-word;
}

.page-about__btn-primary {
  background: var(--button-gradient);
  color: #ffffff;
  border: none;
  box-shadow: 0 4px 15px rgba(43, 115, 246, 0.4);
}

.page-about__btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(43, 115, 246, 0.6);
}

.page-about__btn-secondary {
  background: transparent;
  color: var(--secondary-color);
  border: 2px solid var(--secondary-color);
  margin-left: 20px;
}

.page-about__btn-secondary:hover {
  background: var(--secondary-color);
  color: #ffffff;
  transform: translateY(-2px);
}

.page-about__mission-vision-section {
  padding: 60px 0;
  background-color: var(--deep-navy);
}

.page-about__content-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
}

.page-about__card {
  background: var(--card-bg);
  border-radius: 12px;
  padding: 30px;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
  text-align: center;
  display: flex;
  flex-direction: column;
  height: 100%;
  border: 1px solid var(--border-color);
}

.page-about__card-image {
  width: 100%;
  height: auto;
  max-height: 250px;
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 20px;
  display: block;
}

.page-about__card-title {
  font-size: 1.8em;
  color: var(--gold-color);
  margin-bottom: 15px;
  font-weight: 700;
}

.page-about__card-description {
  font-size: 1em;
  color: var(--text-secondary);
  flex-grow: 1;
}

.page-about__advantages-section {
  padding: 60px 0;
  background-color: var(--deep-navy);
}

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

.page-about__advantage-item {
  background: var(--card-bg);
  border-radius: 12px;
  padding: 30px;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
  text-align: center;
  border: 1px solid var(--border-color);
}

.page-about__advantage-icon {
  width: 200px;
  height: 150px;
  object-fit: contain;
  margin: 0 auto 20px auto;
  display: block;
}

.page-about__advantage-title {
  font-size: 1.5em;
  color: var(--gold-color);
  margin-bottom: 15px;
  font-weight: 700;
}

.page-about__advantage-description {
  font-size: 0.95em;
  color: var(--text-secondary);
}

.page-about__cta-wrapper {
  text-align: center;
  margin-top: 40px;
}

.page-about__btn-large {
  padding: 16px 35px;
  font-size: 1.2em;
}

.page-about__journey-section {
  padding: 60px 0;
  background-color: var(--deep-navy);
}

.page-about__timeline {
  position: relative;
  max-width: 1000px;
  margin: 0 auto;
  padding: 40px 0;
}

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

.page-about__timeline-item {
  padding: 20px 0;
  position: relative;
  width: 50%;
}

.page-about__timeline-item:nth-child(odd) {
  left: 0;
  padding-right: 40px;
  text-align: right;
}

.page-about__timeline-item:nth-child(even) {
  left: 50%;
  padding-left: 40px;
  text-align: left;
}

.page-about__timeline-year {
  color: var(--gold-color);
  font-size: 1.8em;
  font-weight: 700;
  margin-bottom: 10px;
}

.page-about__timeline-content {
  background: var(--card-bg);
  padding: 20px;
  border-radius: 8px;
  position: relative;
  border: 1px solid var(--border-color);
}

.page-about__timeline-content::before {
  content: '';
  position: absolute;
  width: 0;
  height: 0;
  border-style: solid;
  top: 25px;
}

.page-about__timeline-item:nth-child(odd) .page-about__timeline-content::before {
  border-width: 10px 0 10px 10px;
  border-color: transparent transparent transparent var(--border-color);
  right: -10px;
}

.page-about__timeline-item:nth-child(even) .page-about__timeline-content::before {
  border-width: 10px 10px 10px 0;
  border-color: transparent var(--border-color) transparent transparent;
  left: -10px;
}

.page-about__timeline-item::after {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background-color: var(--secondary-color);
  border: 3px solid var(--gold-color);
  top: 45px;
  z-index: 1;
}

.page-about__timeline-item:nth-child(odd)::after {
  right: -12px;
}

.page-about__timeline-item:nth-child(even)::after {
  left: -12px;
}

.page-about__timeline-title {
  font-size: 1.4em;
  color: var(--gold-color);
  margin-bottom: 10px;
}

.page-about__timeline-description {
  font-size: 0.95em;
  color: var(--text-secondary);
}

.page-about__responsibility-section {
  padding: 60px 0;
  background-color: var(--deep-navy);
}

.page-about__responsibility-content {
  display: flex;
  align-items: center;
  gap: 40px;
  margin-top: 40px;
}

.page-about__responsibility-image {
  flex: 1;
  max-width: 50%;
  height: auto;
  border-radius: 12px;
  object-fit: cover;
  display: block;
}

.page-about__responsibility-text {
  flex: 1;
  max-width: 50%;
  color: var(--text-secondary);
}

.page-about__responsibility-text p {
  margin-bottom: 20px;
}

.page-about__cta-final-section {
  padding: 60px 0;
  text-align: center;
  background-color: var(--deep-navy);
}

.page-about__cta-description {
  font-size: 1.1em;
  color: var(--text-secondary);
  margin-bottom: 40px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.page-about__cta-buttons-group {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

.page-about__faq-section {
  padding: 60px 0;
  background-color: var(--deep-navy);
}

.page-about__faq-list {
  max-width: 900px;
  margin: 40px auto 0 auto;
}

.page-about__faq-item {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  margin-bottom: 15px;
  overflow: hidden;
}

.page-about__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 25px;
  cursor: pointer;
  font-size: 1.2em;
  font-weight: 600;
  color: var(--gold-color);
  position: relative;
  list-style: none; /* For details/summary */
}

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

.page-about__faq-toggle {
  font-size: 1.5em;
  line-height: 1;
  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;
  color: var(--text-secondary);
  font-size: 1em;
  line-height: 1.6;
}

.page-about__faq-answer p {
  margin-bottom: 10px;
}

.page-about__faq-answer a {
  color: var(--secondary-color);
  text-decoration: underline;
}

.page-about__faq-answer a:hover {
  color: var(--gold-color);
}

/* --- General Image and Button Responsiveness (Global for .page-about) --- */
.page-about img {
  max-width: 100%;
  height: auto;
  display: block;
}

.page-about__section,
.page-about__card,
.page-about__container,
.page-about__cta-buttons-group {
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  overflow: hidden;
}

.page-about__cta-button,
.page-about__btn-primary,
.page-about__btn-secondary,
.page-about a[class*="button"],
.page-about a[class*="btn"] {
  max-width: 100%;
  box-sizing: border-box;
  white-space: normal;
  word-wrap: break-word;
}

/* --- Homepage-specific CSS (Required by "必写清单" even if not used in HTML) --- */
/* Long text gold frame area (Placeholder for home-content) */
.page-about__home-content {
  border: 1px solid var(--gold-color);
  border-radius: 10px;
  height: 650px; /* Placeholder height */
  overflow-y: auto;
  padding: 30px;
  margin-top: 40px;
  background: var(--card-bg);
  color: var(--text-secondary);
}

/* Game carousel (Placeholder) */
.page-about__row-games {
  background-color: var(--deep-navy);
  padding: 40px 20px;
  max-width: 1330px;
  margin: 0 auto;
}

.page-about__games-title {
  color: var(--text-main);
  text-align: center;
  margin-bottom: 30px;
}

.page-about__slider-wrapper {
  overflow: hidden;
  position: relative;
}

.page-about__slider-track {
  display: flex;
  flex-wrap: nowrap;
  gap: 16px;
  transition: transform 0.5s ease-in-out;
}

.page-about__game-slide {
  flex: 0 0 200px;
  max-width: 200px;
  background: var(--card-bg);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
  border: 1px solid var(--border-color);
}

.page-about__game-slide img {
  width: 100%;
   /* Example height for game slide */
  object-fit: cover;
}

.page-about__game-slide-title {
  color: var(--text-main);
  padding: 10px;
  font-size: 1em;
  text-align: center;
}

/* Partner brands grid (Placeholder) */
.page-about__banners-top-wrapper {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 12px;
  max-width: 900px;
  margin: 40px auto;
  padding: 20px;
  background: var(--card-bg);
  border-radius: 12px;
  border: 1px solid var(--border-color);
}

.page-about__banner-item img {
  
  
  object-fit: contain;
  margin: 0 auto;
  display: block;
}

/* Blog cards (Placeholder) */
.page-about__blog-masonry {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  align-items: stretch;
  padding: 40px 0;
}

.page-about__blog-card {
  background: var(--card-bg);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
  display: flex;
  flex-direction: column;
  height: 100%;
  border: 1px solid var(--border-color);
}

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

.page-about__blog-card-content {
  padding: 20px;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.page-about__blog-card-title {
  font-size: 1.4em;
  color: var(--gold-color);
  margin-bottom: 10px;
  font-weight: 700;
}

.page-about__blog-card-text {
  font-size: 0.9em;
  color: var(--text-secondary);
  margin-bottom: 15px;
  flex-grow: 1;
}

.page-about__blog-card-link {
  display: inline-block;
  color: var(--secondary-color);
  text-decoration: none;
  font-weight: 600;
  margin-top: auto;
}

.page-about__blog-card-link:hover {
  text-decoration: underline;
}

.page-about__blog-slider {
  overflow: hidden;
  position: relative;
  padding: 40px 0;
}

.page-about__blog-slider-track {
  display: flex;
  flex-wrap: nowrap;
  gap: 20px;
  transition: transform 0.5s ease-in-out;
}

.page-about__blog-slide {
  flex: 0 0 calc(33.333% - 14px);
  max-width: calc(33.333% - 14px);
}

/* --- Media Queries --- */
@media (max-width: 1024px) {
  .page-about__section-title {
    font-size: 2em;
  }
  .page-about__main-title {
    font-size: clamp(1.8em, 5vw, 3em);
  }
  .page-about__content-grid {
    grid-template-columns: 1fr;
  }
  .page-about__timeline::before {
    left: 20px;
  }
  .page-about__timeline-item {
    width: 100%;
    left: 0 !important;
    padding-left: 60px !important;
    padding-right: 20px !important;
    text-align: left !important;
  }
  .page-about__timeline-item:nth-child(odd)::after,
  .page-about__timeline-item:nth-child(even)::after {
    left: 12px;
  }
  .page-about__timeline-item:nth-child(odd) .page-about__timeline-content::before {
    border-width: 10px 10px 10px 0;
    border-color: transparent var(--border-color) transparent transparent;
    left: -10px;
    right: auto;
  }
  .page-about__timeline-item:nth-child(even) .page-about__timeline-content::before {
    border-width: 10px 10px 10px 0;
    border-color: transparent var(--border-color) transparent transparent;
    left: -10px;
  }
  .page-about__responsibility-content {
    flex-direction: column;
  }
  .page-about__responsibility-image,
  .page-about__responsibility-text {
    max-width: 100%;
  }
  .page-about__advantages-grid {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  }
  .page-about__cta-buttons-group {
    flex-direction: column;
    gap: 15px;
  }
  .page-about__btn-secondary {
    margin-left: 0;
  }
  /* Homepage placeholders */
  .page-about__banners-top-wrapper {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-about__blog-masonry {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about__blog-slide {
    flex: 0 0 calc(50% - 10px);
    max-width: calc(50% - 10px);
  }
}

@media (max-width: 768px) {
  /* HERO 主图区域 */
  .page-about__hero-section {
    padding-top: 10px;
    padding-bottom: 40px;
  }
  .page-about__main-title {
    font-size: clamp(1.5em, 7vw, 2.5em);
  }
  .page-about__intro-text {
    font-size: 1em;
  }
  .page-about__hero-image-wrapper {
    padding: 0 15px;
  }

  /* 长文金框区 (Placeholder) */
  .page-about__home-content {
    height: auto !important;
    overflow-y: visible !important;
    padding: 20px 15px !important;
    margin-top: 30px;
  }
  .page-about__home-content h2 {
    font-size: 1.8em !important;
  }

  /* 游戏轮播 (Placeholder) */
  .page-about__row-games {
    padding: 30px 15px;
  }
  .page-about__games-title {
    font-size: 1.8em;
  }
  .page-about__slider-track {
    display: flex;
    flex-wrap: nowrap;
    gap: 10px;
  }
  .page-about__game-slide {
    flex: 0 0 160px !important;
    max-width: 160px !important;
  }

  /* 合作品牌六宫格 (Placeholder) */
  .page-about__banners-top-wrapper {
    grid-template-columns: repeat(3, minmax(0, 1fr)) !important;
    gap: 8px;
    padding: 15px;
  }
  .page-about__banner-item img {
    
    
  }

  /* 博客卡片区 (Placeholder) */
  .page-about__blog-masonry {
    grid-template-columns: 1fr !important;
    gap: 15px;
    padding: 30px 15px;
  }
  .page-about__blog-card-image {
    height: 180px;
  }
  .page-about__blog-card-title {
    font-size: 1.2em;
  }
  .page-about__blog-slider-track {
    display: flex;
    flex-wrap: nowrap;
    gap: 15px;
  }
  .page-about__blog-slide {
    flex: 0 0 100% !important;
    max-width: 100% !important;
  }

  /* 通用图片与容器 */
  .page-about img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
  }
  .page-about__section,
  .page-about__card,
  .page-about__container,
  .page-about__cta-buttons-group {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
  }
  .page-about__card-image {
    max-height: 200px;
  }
  .page-about__advantage-icon {
    width: 150px !important;
    height: 120px !important;
  }
  .page-about__responsibility-image {
    max-width: 100% !important;
    padding: 0 15px;
  }
}