/* style/about.css */
/* body 已 padding-top: var(--header-offset)；页面禁止再写该变量 */

:root {
  --page-about-primary-color: #11A84E;
  --page-about-secondary-color: #22C768;
  --page-about-button-gradient: linear-gradient(180deg, #2AD16F 0%, #13994A 100%);
  --page-about-card-bg: #11271B;
  --page-about-background: #08160F;
  --page-about-text-main: #F2FFF6;
  --page-about-text-secondary: #A7D9B8;
  --page-about-border-color: #2E7A4E;
  --page-about-glow-color: #57E38D;
  --page-about-gold-color: #F2C14E;
  --page-about-divider-color: #1E3A2A;
  --page-about-deep-green-color: #0A4B2C;
}

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

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

.page-about__light-bg {
  background-color: #ffffff;
  color: #333333; /* Dark text for light background */
}

.page-about__hero-section {
  position: relative;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 60px 20px;
  padding-top: 10px; /* Small top padding, body handles header offset */
  text-align: center;
  overflow: hidden;
}

.page-about__hero-image {
  width: 100%;
  height: auto;
  max-width: 1920px;
  object-fit: cover;
  display: block;
  margin-bottom: 20px;
  border-radius: 8px;
}

.page-about__hero-content {
  width: 100%;
  max-width: 900px;
  z-index: 1;
  padding: 0 15px;
  box-sizing: border-box;
}

.page-about__main-title {
  font-size: clamp(2em, 4vw, 3.2em);
  font-weight: 700;
  color: var(--page-about-text-main);
  margin-bottom: 15px;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.page-about__description {
  font-size: clamp(1em, 1.5vw, 1.2em);
  color: var(--page-about-text-secondary);
  margin-bottom: 30px;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.page-about__cta-buttons {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
  width: 100%;
  max-width: 600px;
  margin: 0 auto;
}

.page-about__btn-primary,
.page-about__btn-secondary {
  display: inline-block;
  padding: 14px 28px;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.1em;
  transition: all 0.3s ease;
  box-sizing: border-box;
  max-width: 100%;
  white-space: normal;
  word-wrap: break-word;
}

.page-about__btn-primary {
  background: var(--page-about-button-gradient);
  color: var(--page-about-text-main);
  border: 2px solid transparent;
  box-shadow: 0 4px 15px rgba(0, 255, 100, 0.2);
}

.page-about__btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 255, 100, 0.3);
}

.page-about__btn-secondary {
  background: transparent;
  color: var(--page-about-primary-color);
  border: 2px solid var(--page-about-primary-color);
}

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

.page-about__content-area {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 20px;
  display: flex;
  flex-direction: column;
  gap: 40px;
  background-color: #ffffff;
  color: #333333;
  border-radius: 8px;
  box-shadow: 0 0 20px rgba(0,0,0,0.05);
}

.page-about__text-block {
  padding: 20px;
  border-radius: 8px;
  background-color: #f9f9f9;
  color: #333333;
}

.page-about__heading {
  font-size: clamp(1.8em, 2.5vw, 2.5em);
  color: var(--page-about-primary-color);
  margin-bottom: 20px;
  font-weight: 700;
  line-height: 1.3;
}

.page-about__paragraph {
  font-size: 1.1em;
  margin-bottom: 15px;
  line-height: 1.7;
  color: #333333;
}

.page-about__paragraph strong {
  color: var(--page-about-primary-color);
}

.page-about__values-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.page-about__value-item {
  background-color: #f0f0f0;
  border-left: 5px solid var(--page-about-primary-color);
  padding: 15px 20px;
  margin-bottom: 10px;
  border-radius: 5px;
  font-size: 1.1em;
  color: #333333;
}

.page-about__value-item strong {
  color: var(--page-about-primary-color);
}

.page-about__image-block {
  text-align: center;
  padding: 20px;
}

.page-about__image {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 0 auto;
  border-radius: 8px;
  box-shadow: 0 5px 15px rgba(0,0,0,0.1);
  min-width: 200px;
  min-height: 200px;
}

.page-about__faq-section {
  padding: 60px 20px;
  text-align: center;
  background-color: var(--page-about-card-bg);
  color: var(--page-about-text-main);
  border-radius: 8px;
  margin-top: 40px;
}

.page-about__faq-section .page-about__heading {
  color: var(--page-about-gold-color);
  margin-bottom: 40px;
}

.page-about__faq-list {
  max-width: 800px;
  margin: 0 auto;
  text-align: left;
}

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

.page-about__faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 700;
  font-size: 1.2em;
  color: var(--page-about-text-main);
  transition: background-color 0.3s ease;
}

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

.page-about__faq-item summary:hover {
  background-color: rgba(255, 255, 255, 0.1);
}

.page-about__faq-qtext {
  flex-grow: 1;
}

.page-about__faq-toggle {
  font-size: 1.5em;
  margin-left: 15px;
  color: var(--page-about-gold-color);
}

.page-about__faq-answer {
  padding: 0 20px 20px 20px;
  font-size: 1.1em;
  color: var(--page-about-text-secondary);
  line-height: 1.7;
  animation: fadein 0.3s ease-out;
}

@keyframes fadein {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Ensure details content is hidden when closed */
.page-about__faq-item:not([open]) .page-about__faq-answer {
  display: none;
}

.page-about__cta-bottom {
  padding: 60px 20px;
  text-align: center;
  background-color: var(--page-about-deep-green-color);
  color: var(--page-about-text-main);
  border-radius: 8px;
  margin-top: 40px;
}

.page-about__cta-bottom .page-about__heading {
  color: var(--page-about-gold-color);
}

.page-about__cta-bottom .page-about__paragraph {
  color: var(--page-about-text-secondary);
  margin-bottom: 30px;
}

/* Responsive styles */
@media (max-width: 768px) {
  .page-about {
    font-size: 16px;
    line-height: 1.6;
  }

  .page-about__hero-section {
    padding: 40px 15px;
    padding-top: 10px !important;
  }

  .page-about__hero-image {
    width: 100% !important;
    height: auto !important;
  }

  .page-about__main-title {
    font-size: 2em;
  }

  .page-about__description {
    font-size: 1em;
  }

  .page-about__cta-buttons {
    flex-direction: column;
    gap: 10px;
    padding-left: 15px;
    padding-right: 15px;
  }

  .page-about__btn-primary,
  .page-about__btn-secondary {
    max-width: 100% !important;
    width: 100% !important;
    padding: 12px 20px;
    font-size: 1em;
    margin: 0;
    white-space: normal !important;
    word-wrap: break-word !important;
  }

  .page-about__content-area,
  .page-about__faq-section,
  .page-about__cta-bottom {
    padding: 20px 15px;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }

  .page-about__heading {
    font-size: 1.8em;
  }

  .page-about__paragraph,
  .page-about__value-item,
  .page-about__faq-item summary,
  .page-about__faq-answer p {
    font-size: 1em;
  }

  .page-about__image {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    min-width: 200px !important;
    min-height: 200px !important;
  }

  .page-about__faq-item summary {
    padding: 15px;
  }

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

/* Content area images CSS dimensions lower than 200px check */
.page-about img {
  min-width: 200px; /* Enforce minimum size for content images */
  min-height: 200px;
}

/* Ensure no filter is used on images */
.page-about img {
  filter: none; /* Explicitly set to none to prevent accidental filters */
}

/* Body background is dark, so content area text is light by default */
.page-about {
  color: var(--page-about-text-main); /* #F2FFF6 */
  background-color: var(--page-about-background); /* #08160F */
}

/* Override for light-bg sections */
.page-about__light-bg {
  background-color: #ffffff; /* White background */
  color: #333333; /* Dark text for contrast */
}
.page-about__light-bg .page-about__heading, 
.page-about__light-bg .page-about__paragraph, 
.page-about__light-bg .page-about__value-item strong {
  color: #333333;
}
.page-about__light-bg .page-about__value-item {
  background-color: #f0f0f0;
}
.page-about__light-bg .page-about__value-item strong {
  color: var(--page-about-primary-color);
}