/* Base styles for the page-about content */
.page-about {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    color: #FFF1E8; /* Text Main */
    background: #140C0C; /* Background */
}

.page-about__container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px 15px;
    box-sizing: border-box;
}

.page-about__section {
    padding: 60px 0;
    position: relative;
    overflow: hidden; /* For image overflow on mobile */
}

.page-about__section-title {
    font-size: 38px;
    font-weight: bold;
    color: #F3C54D; /* Gold */
    text-align: center;
    margin-bottom: 40px;
    line-height: 1.2;
}

.page-about__text-block {
    font-size: 18px;
    margin-bottom: 20px;
    text-align: center;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

/* Hero Section */
.page-about__hero-section {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding-top: 10px; /* Small top padding, body handles --header-offset */
    padding-bottom: 60px;
    min-height: 600px;
    background: #140C0C; /* Background */
}

.page-about__hero-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.page-about__hero-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.3; /* Slightly dim the background image */
}

.page-about__hero-content {
    position: relative;
    z-index: 1;
    max-width: 900px;
    padding: 20px;
    box-sizing: border-box;
}

.page-about__main-title {
    font-size: 48px;
    font-weight: 900;
    color: #FFF1E8; /* Text Main */
    margin-bottom: 20px;
    line-height: 1.2;
    letter-spacing: 1px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.page-about__description {
    font-size: 22px;
    color: #F3C54D; /* Gold */
    margin-bottom: 40px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

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

.page-about__btn-primary,
.page-about__btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 15px 30px;
    border-radius: 8px;
    font-size: 18px;
    font-weight: bold;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    text-align: center;
    white-space: normal;
    word-wrap: break-word;
    box-sizing: border-box;
}

.page-about__btn-primary {
    background: linear-gradient(180deg, #FFB04A 0%, #D86A14 100%); /* Button gradient */
    color: #FFF1E8; /* Text Main */
    box-shadow: 0 4px 15px rgba(255, 176, 74, 0.4);
}

.page-about__btn-primary:hover {
    background: linear-gradient(180deg, #D86A14 0%, #FFB04A 100%);
    box-shadow: 0 6px 20px rgba(255, 176, 74, 0.6);
    transform: translateY(-2px);
}

.page-about__btn-secondary {
    background: #7E0D0D; /* Deep Red */
    color: #FFF1E8; /* Text Main */
    border: 2px solid #F3C54D; /* Gold border */
    box-shadow: 0 4px 10px rgba(126, 13, 13, 0.4);
}

.page-about__btn-secondary:hover {
    background: #C61F1F; /* Main Color */
    border-color: #FFF1E8; /* Text Main */
    box-shadow: 0 6px 15px rgba(126, 13, 13, 0.6);
    transform: translateY(-2px);
}

/* Section Intro */
.page-about__section--intro .page-about__text-block {
    font-size: 18px;
    color: #FFF1E8;
}

.page-about__image-content {
    display: block;
    max-width: 100%;
    height: auto;
    margin: 40px auto 0;
    border-radius: 10px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}

/* Mission & Vision Section */
.page-about__section--mission {
    background: #2A1212; /* Card BG */
}

.page-about__content-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.page-about__card {
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    text-align: left;
}

.page-about__dark-bg {
    background: #C61F1F; /* Main Color */
    color: #FFF1E8; /* Text Main */
}

.page-about__card-title {
    font-size: 28px;
    font-weight: bold;
    color: #F3C54D; /* Gold */
    margin-bottom: 15px;
}

.page-about__card p {
    font-size: 16px;
    line-height: 1.7;
    color: #FFF1E8;
}

/* Core Values Section */
.page-about__section--values {
    background: #140C0C; /* Background */
}

.page-about__value-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    list-style: none;
    padding: 0;
    margin-top: 40px;
}

.page-about__value-item {
    background: #2A1212; /* Card BG */
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    text-align: center;
}

.page-about__value-heading {
    font-size: 24px;
    color: #F3C54D; /* Gold */
    margin-bottom: 15px;
}

.page-about__value-item p {
    font-size: 16px;
    color: #FFF1E8; /* Text Main */
}

/* Why Choose Section */
.page-about__section--why-choose {
    background: #2A1212; /* Card BG */
}

.page-about__features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.page-about__feature-card {
    background: #C61F1F; /* Main Color */
    padding: 30px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    color: #FFF1E8;
}

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

.page-about__feature-title {
    font-size: 24px;
    color: #F3C54D; /* Gold */
    margin-bottom: 10px;
}

.page-about__feature-card p {
    font-size: 16px;
    line-height: 1.7;
    color: #FFF1E8;
}

.page-about__cta-buttons--center {
    margin-top: 60px;
}

/* Contact Us Section */
.page-about__section--contact-us {
    background: #7E0D0D; /* Deep Red */
    color: #FFF1E8; /* Text Main */
}

.page-about__dark-section .page-about__section-title {
    color: #F3C54D; /* Gold */
}

.page-about__dark-section .page-about__text-block {
    color: #FFF1E8;
}

.page-about__container--flex {
    display: flex;
    align-items: center;
    gap: 50px;
}

.page-about__contact-text {
    flex: 1;
    text-align: left;
}

.page-about__contact-text .page-about__btn-primary {
    margin-top: 30px;
}

.page-about__contact-image {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.page-about__contact-image img {
    max-width: 100%;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}

/* FAQ Section */
.page-about__section--faq {
    background: #140C0C; /* Background */
}

.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: 5px;
  border: 1px solid #6A1E1E; /* Border */
  overflow: hidden;
  background: #2A1212; /* Card BG */
}
details.page-about__faq-item summary.page-about__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 20px;
  cursor: pointer;
  user-select: none;
  list-style: none;
  transition: background-color 0.3s ease;
}
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: #3a1a1a; /* Slightly lighter Card BG on hover */
}
.page-about__faq-qtext {
  flex: 1;
  font-size: 18px;
  font-weight: 600;
  line-height: 1.5;
  text-align: left;
  color: #FFF1E8; /* Text Main */
}
.page-about__faq-toggle {
  font-size: 24px;
  font-weight: bold;
  color: #F3C54D; /* Gold */
  flex-shrink: 0;
  margin-left: 15px;
  width: 28px;
  text-align: center;
}
details.page-about__faq-item .page-about__faq-answer {
  padding: 0 20px 20px;
  background: #1f0f0f; /* Darker background for answer */
  border-radius: 0 0 5px 5px;
  color: #FFF1E8;
}
.page-about__faq-answer p {
    margin-bottom: 10px;
    font-size: 16px;
    line-height: 1.7;
    text-align: left;
    color: #FFF1E8;
}
.page-about__faq-link {
    color: #F3C54D; /* Gold */
    text-decoration: underline;
    font-size: 16px;
}
.page-about__faq-link:hover {
    color: #FFB04A; /* Lighter gold */
}


/* --- Responsive Styles --- */
@media (max-width: 1024px) {
    .page-about__main-title {
        font-size: 42px;
    }
    .page-about__description {
        font-size: 20px;
    }
    .page-about__section-title {
        font-size: 34px;
    }
    .page-about__content-grid,
    .page-about__value-list,
    .page-about__features-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    }
    .page-about__container--flex {
        flex-direction: column;
        text-align: center;
    }
    .page-about__contact-text {
        text-align: center;
    }
    .page-about__contact-image {
        margin-top: 30px;
    }
}

@media (max-width: 768px) {
    /* HERO 主图区域 */
    .page-about__hero-section {
        padding-top: 10px; /* Small top padding, body handles --header-offset */
        padding-bottom: 40px;
        min-height: 450px;
    }
    .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;
        opacity: 0.2; /* Dimmmer on mobile */
    }
    .page-about__main-title {
        font-size: clamp(30px, 9vw, 38px); /* Clamp font size for H1 */
        margin-bottom: 15px;
    }
    .page-about__description {
        font-size: 16px;
        margin-bottom: 30px;
    }
    .page-about__cta-buttons {
        flex-direction: column; /* Stack buttons vertically */
        gap: 15px;
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        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: 16px;
        white-space: normal !important;
        word-wrap: break-word !important;
        box-sizing: border-box !important;
    }

    /* 通用图片与容器 */
    .page-about img {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
        display: block !important;
    }
    .page-about__section,
    .page-about__container,
    .page-about__card,
    .page-about__feature-card {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        padding-left: 15px;
        padding-right: 15px;
    }
    .page-about__section {
        padding: 40px 0;
    }
    .page-about__section-title {
        font-size: clamp(28px, 8vw, 32px); /* Clamp font size for H2 */
        margin-bottom: 30px;
    }
    .page-about__text-block {
        font-size: 16px;
        text-align: left; /* Align text left for better readability on mobile */
    }
    .page-about__image-content {
        margin-top: 30px;
    }

    /* 产品展示图区域 - Not applicable for About page, but general grid fallback */
    .page-about__content-grid,
    .page-about__value-list,
    .page-about__features-grid {
        grid-template-columns: 1fr; /* Single column layout for grids */
        gap: 20px;
    }
    .page-about__card,
    .page-about__value-item,
    .page-about__feature-card {
        padding: 25px;
    }
    .page-about__card-title,
    .page-about__value-heading,
    .page-about__feature-title {
        font-size: 22px;
    }
    .page-about__card p,
    .page-about__value-item p,
    .page-about__feature-card p {
        font-size: 15px;
    }

    /* Contact Us Section */
    .page-about__contact-text .page-about__btn-primary {
        margin-top: 20px;
    }
    .page-about__contact-image {
        margin-top: 20px;
    }

    /* FAQ Section */
    details.page-about__faq-item summary.page-about__faq-question { padding: 15px; }
    .page-about__faq-qtext { font-size: 16px; }
    details.page-about__faq-item .page-about__faq-answer { padding: 0 15px 15px; }
    .page-about__faq-answer p, .page-about__faq-link { font-size: 15px; }
}