:root {
  --page-about-primary-color: #C91F17;
  --page-about-secondary-color: #E53935;
  --page-about-button-gradient: linear-gradient(180deg, #FFD86A 0%, #E6B800 100%);
  --page-about-card-bg: #D32F2F;
  --page-about-background: #B71C1C;
  --page-about-text-main: #FFF5E1;
  --page-about-border-color: #F2B544;
  --page-about-glow-color: #FFCC66;
  --page-about-gold-color: #F4D34D;
  --page-about-deep-red-color: #7A0E0E;
  --page-about-light-text: #ffffff;
  --page-about-dark-text: #333333;
  --page-about-light-bg: #f5f5f5;
  --page-about-default-bg: #ffffff;
}

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

/* --- Hero Section --- */
.page-about__hero-section {
  position: relative;
  width: 100%;
  display: flex;
  flex-direction: column; /* Image above content */
  align-items: center;
  justify-content: center;
  text-align: center;
  padding-bottom: 40px;
  padding-top: 10px; /* Small top padding, assuming body handles header offset */
  background: var(--page-about-deep-red-color);
  overflow: hidden; /* Ensure no overflow */
}

.page-about__hero-image {
  width: 100%;
  max-height: 600px; /* Limit height for desktop */
  overflow: hidden;
  margin-bottom: 20px; /* Space between image and text */
}

.page-about__hero-image img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover; /* Cover the area */
}

.page-about__hero-content {
  position: relative;
  z-index: 1;
  max-width: 900px;
  padding: 0 20px;
  color: var(--page-about-text-main);
}

.page-about__main-title {
  font-size: clamp(2.5rem, 4vw, 3.5rem); /* Clamp font size for H1 */
  font-weight: bold;
  margin-bottom: 15px;
  line-height: 1.2;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
  color: var(--page-about-gold-color);
}

.page-about__hero-description {
  font-size: 1.15rem;
  margin-bottom: 30px;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
  text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.4);
}

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

.page-about__cta-buttons--centered {
  margin-top: 40px;
}

/* --- General Section Styling --- */
.page-about__section {
  padding: 60px 20px;
  text-align: center;
}

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

.page-about__container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 15px;
}

.page-about__section-title {
  font-size: clamp(2rem, 3vw, 2.8rem);
  font-weight: bold;
  margin-bottom: 40px;
  line-height: 1.3;
  color: var(--page-about-gold-color);
}

.page-about__dark-section .page-about__section-title {
  color: var(--page-about-gold-color);
}

.page-about__text-block {
  font-size: 1.05rem;
  margin-bottom: 20px;
  text-align: left;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
  color: var(--page-about-text-main);
}

.page-about__text-block p {
  margin-bottom: 15px;
}

.page-about__text-block ul {
  list-style: disc;
  padding-left: 25px;
  margin-bottom: 20px;
}

.page-about__text-block li {
  margin-bottom: 10px;
}

/* --- Buttons --- */
.page-about__btn-primary,
.page-about__btn-secondary {
  display: inline-block;
  padding: 14px 30px;
  border-radius: 50px;
  text-decoration: none;
  font-weight: bold;
  font-size: 1.1rem;
  transition: all 0.3s ease;
  cursor: pointer;
  border: none;
  text-align: center;
  box-sizing: border-box;
  white-space: normal;
  word-wrap: break-word;
  max-width: 100%;
}

.page-about__btn-primary {
  background: var(--page-about-button-gradient);
  color: var(--page-about-deep-red-color);
  box-shadow: 0 4px 15px rgba(255, 216, 106, 0.4);
}

.page-about__btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(255, 216, 106, 0.6);
}

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

.page-about__btn-secondary:hover {
  background: var(--page-about-gold-color);
  color: var(--page-about-deep-red-color);
}

/* --- Vision/Mission/Values Section --- */
.page-about__card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.page-about__card {
  background: var(--page-about-card-bg);
  border-radius: 15px;
  padding: 30px;
  text-align: center;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
  display: flex;
  flex-direction: column;
  align-items: center;
  color: var(--page-about-text-main);
  border: 1px solid var(--page-about-border-color);
}

.page-about__card img {
  width: 100%;
  max-width: 300px;
  height: auto;
  border-radius: 10px;
  margin-bottom: 20px;
  display: block;
}

.page-about__card-title {
  font-size: 1.6rem;
  font-weight: bold;
  margin-bottom: 15px;
  color: var(--page-about-gold-color);
}

.page-about__card-text {
  font-size: 1rem;
  line-height: 1.7;
}

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

.page-about__feature-item {
  background: var(--page-about-card-bg);
  border-radius: 15px;
  padding: 30px;
  text-align: center;
  box-shadow: 0 6px 15px rgba(0, 0, 0, 0.2);
  display: flex;
  flex-direction: column;
  align-items: center;
  color: var(--page-about-text-main);
  border: 1px solid var(--page-about-border-color);
}

.page-about__feature-item img {
  width: 100%;
  
  height: auto;
  margin-bottom: 20px;
  display: block;
  border-radius: 8px;
}

.page-about__feature-title {
  font-size: 1.4rem;
  font-weight: bold;
  margin-bottom: 10px;
  color: var(--page-about-gold-color);
}

.page-about__feature-description {
  font-size: 0.95rem;
  line-height: 1.6;
}

/* --- Commitment Section --- */
.page-about__commitment-section .page-about__text-block {
  max-width: 1000px;
}

.page-about__image-and-text {
  display: flex;
  align-items: center;
  gap: 40px;
  margin-top: 50px;
  text-align: left;
}

.page-about__image-left {
  flex: 0 0 40%;
  max-width: 40%;
  border-radius: 15px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
  display: block;
}

.page-about__image-left img {
  width: 100%;
  height: auto;
  border-radius: 15px;
  display: block;
}

.page-about__text-right {
  flex: 1;
  color: var(--page-about-text-main);
}

.page-about__text-title {
  font-size: 1.8rem;
  font-weight: bold;
  margin-bottom: 20px;
  color: var(--page-about-gold-color);
}

.page-about__text-right p {
  margin-bottom: 15px;
}

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

details.page-about__faq-item {
  margin-bottom: 15px;
  border-radius: 10px;
  border: 1px solid var(--page-about-border-color);
  overflow: hidden;
  background: var(--page-about-card-bg);
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}
details.page-about__faq-item summary.page-about__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 25px;
  cursor: pointer;
  user-select: none;
  list-style: none;
  transition: background-color 0.3s ease;
  color: var(--page-about-gold-color);
}
details.page-about__faq-item summary.page-about__faq-question::-webkit-details-marker {
  display: none;
}
details.page-about__faq-item summary.page-about__faq-question:hover {
  background: var(--page-about-deep-red-color);
}
.page-about__faq-qtext {
  flex: 1;
  font-size: 1.1rem;
  font-weight: 600;
  line-height: 1.5;
  text-align: left;
}
.page-about__faq-toggle {
  font-size: 28px;
  font-weight: bold;
  color: var(--page-about-gold-color);
  flex-shrink: 0;
  margin-left: 15px;
  width: 30px;
  text-align: center;
  transition: transform 0.3s ease;
}
details.page-about__faq-item[open] .page-about__faq-toggle {
  transform: rotate(45deg); /* Rotate plus to become cross */
}
details.page-about__faq-item .page-about__faq-answer {
  padding: 0 25px 25px;
  background: var(--page-about-deep-red-color);
  border-radius: 0 0 10px 10px;
  text-align: left;
  color: var(--page-about-text-main);
}
.page-about__faq-answer p {
  margin-bottom: 10px;
}
.page-about__faq-answer ul {
  list-style: disc;
  padding-left: 25px;
}
.page-about__faq-answer li {
  margin-bottom: 5px;
}

/* --- CTA Section --- */
.page-about__cta-content {
  padding: 50px 20px;
}

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

.page-about__section,
.page-about__card,
.page-about__container,
.page-about__cta-buttons,
.page-about__button-group,
.page-about__btn-container,
.page-about__image-and-text,
.page-about__feature-list,
.page-about__card-grid,
.page-about__faq-list {
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  overflow: hidden; /* Prevent horizontal scroll */
}

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

  /* HERO 主图区域 */
  .page-about__hero-section {
    padding-top: 10px; /* Small top padding, assuming body handles header offset */
    padding-bottom: 30px;
  }
  
  .page-about__hero-image {
    max-height: 300px;
    margin-bottom: 15px;
  }

  .page-about__hero-image img {
    object-fit: contain !important; /* Prevent cropping on mobile */
    aspect-ratio: unset !important; /* Allow natural aspect ratio */
    width: 100% !important;
    height: auto !important;
  }

  .page-about__main-title {
    font-size: clamp(2rem, 8vw, 2.5rem);
    margin-bottom: 10px;
  }

  .page-about__hero-description {
    font-size: 1rem;
    margin-bottom: 25px;
  }

  /* 按钮与按钮容器 */
  .page-about__cta-buttons {
    flex-direction: column;
    gap: 15px;
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px; /* Add padding to prevent overflow */
    flex-wrap: wrap !important; /* Ensure buttons wrap */
  }

  .page-about__btn-primary,
  .page-about__btn-secondary,
  .page-about a[class*="button"],
  .page-about a[class*="btn"] {
    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;
  }

  /* General Section Styling */
  .page-about__section {
    padding: 40px 15px;
  }

  /* 装饰主标题 + 长文 SEO 区 */
  .page-about__section-title {
    font-size: clamp(1.8rem, 7vw, 2.2rem);
    margin-bottom: 30px;
  }

  .page-about__text-block {
    font-size: 0.95rem;
    padding: 0; /* Remove padding if container already has it */
    text-align: left; /* Keep text aligned left for readability */
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }
  .page-about__text-block ul, .page-about__text-block ol {
    padding-left: 20px;
  }

  .page-about__container {
    padding: 0; /* Remove container padding if section already has it */
  }

  /* Vision/Mission/Values Section */
  .page-about__card-grid {
    grid-template-columns: 1fr; /* Single column on mobile */
    gap: 20px;
    padding-left: 15px;
    padding-right: 15px;
  }

  .page-about__card {
    padding: 25px;
  }

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

  /* Why Choose Us Section */
  .page-about__feature-list {
    grid-template-columns: 1fr; /* Single column on mobile */
    gap: 20px;
    padding-left: 15px;
    padding-right: 15px;
  }

  .page-about__feature-item {
    padding: 25px;
  }

  .page-about__feature-title {
    font-size: 1.2rem;
  }

  /* Commitment Section */
  .page-about__image-and-text {
    flex-direction: column; /* Stack image and text vertically */
    gap: 30px;
    margin-top: 30px;
    padding-left: 15px;
    padding-right: 15px;
  }

  .page-about__image-left {
    flex: 0 0 100%;
    max-width: 100%;
  }

  .page-about__text-right {
    text-align: center;
  }

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

  /* FAQ Section */
  details.page-about__faq-item {
    margin-bottom: 10px;
    margin-left: 15px;
    margin-right: 15px;
  }
  details.page-about__faq-item summary.page-about__faq-question {
    padding: 15px 20px;
  }
  .page-about__faq-qtext {
    font-size: 1rem;
  }
  .page-about__faq-toggle {
    font-size: 24px;
    width: 25px;
  }
  details.page-about__faq-item .page-about__faq-answer {
    padding: 0 20px 20px;
  }

  /* 通用图片与容器 */
  .page-about__section,
  .page-about__card,
  .page-about__container,
  .page-about__button-group,
  .page-about__btn-container,
  .page-about__image-and-text,
  .page-about__feature-list,
  .page-about__card-grid,
  .page-about__faq-list {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 0;
    padding-right: 0;
  }
}