/* style/about.css */
:root {
    --primary-color: #11A84E;
    --secondary-color: #22C768;
    --bg-card: #11271B;
    --bg-body: #08160F;
    --text-main: #F2FFF6;
    --text-secondary: #A7D9B8;
    --border-color: #2E7A4E;
    --glow-color: #57E38D;
    --gold-color: #F2C14E;
    --divider-color: #1E3A2A;
    --deep-green-color: #0A4B2C;
}

.page-about {
    font-family: 'Arial', sans-serif;
    color: var(--text-main); /* Default text color for dark body background */
    background-color: var(--bg-body); /* Ensure background is set */
}

.page-about__hero-section {
    position: relative;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 10px 0 60px 0; /* Small top padding, more bottom padding */
    text-align: center;
    overflow: hidden;
}

.page-about__hero-image-wrapper {
    width: 100%;
    max-height: 700px; /* Limit height for hero image */
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
}

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

.page-about__hero-content {
    position: relative; /* Ensure content is above the image but not overlapping */
    z-index: 2;
    max-width: 900px;
    padding: 20px;
    margin-top: 20px;
}

.page-about__main-title {
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.02em;
    color: var(--text-main);
    margin-bottom: 20px;
    text-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
    font-size: clamp(2rem, 5vw, 3.5rem); /* Responsive font size */
}

.page-about__intro-text {
    font-size: 1.1rem;
    line-height: 1.6;
    color: var(--text-secondary);
    margin-bottom: 30px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.page-about__cta-button {
    display: inline-block;
    background: linear-gradient(180deg, #2AD16F 0%, #13994A 100%);
    color: #ffffff;
    padding: 15px 30px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.page-about__cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(34, 199, 104, 0.4);
}

.page-about__cta-button--center {
    margin: 30px auto 0 auto;
    display: block;
    width: fit-content;
}

.page-about__section {
    padding: 60px 0;
    position: relative;
}

.page-about__section-title {
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    color: var(--text-main);
    text-align: center;
    margin-bottom: 20px;
    font-weight: 700;
    line-height: 1.3;
}

.page-about__section-description {
    font-size: 1rem;
    color: var(--text-secondary);
    text-align: center;
    max-width: 800px;
    margin: 0 auto 40px auto;
    line-height: 1.6;
}

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

.page-about__content-grid {
    display: flex;
    gap: 40px;
    align-items: center;
    margin-bottom: 40px;
}

.page-about__content-grid:nth-child(even) {
    flex-direction: row-reverse;
}

.page-about__text-block {
    flex: 1;
    min-width: 0;
}

.page-about__image-wrapper {
    flex: 1;
    min-width: 0;
    display: flex;
    justify-content: center;
    align-items: center;
}

.page-about__image-wrapper--center {
    margin-top: 40px;
}

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

.page-about__sub-title {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 15px;
    font-weight: 600;
}

.page-about__text-block p {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text-secondary);
    margin-bottom: 15px;
}

.page-about__dark-bg {
    background-color: var(--bg-card);
}

.page-about__dark-bg .page-about__section-title,
.page-about__dark-bg .page-about__sub-title,
.page-about__dark-bg .page-about__value-title,
.page-about__dark-bg .page-about__member-name {
    color: var(--text-main);
}

.page-about__dark-bg .page-about__section-description,
.page-about__dark-bg .page-about__text-block p,
.page-about__dark-bg .page-about__value-card p,
.page-about__dark-bg .page-about__member-role,
.page-about__dark-bg .page-about__member-description {
    color: var(--text-secondary);
}

.page-about__values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.page-about__value-card {
    background-color: var(--bg-body);
    padding: 30px;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-color);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-about__value-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
}

.page-about__value-title {
    font-size: 1.35rem;
    color: var(--primary-color);
    margin-bottom: 15px;
    font-weight: 600;
}

.page-about__value-card p {
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--text-secondary);
}

.page-about__history-timeline {
    position: relative;
    padding-left: 30px;
    margin-bottom: 40px;
}

.page-about__history-timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background-color: var(--divider-color);
    border-radius: 2px;
}

.page-about__timeline-item {
    position: relative;
    margin-bottom: 30px;
    padding-left: 30px;
}

.page-about__timeline-item::before {
    content: '';
    position: absolute;
    left: -10px;
    top: 5px;
    width: 24px;
    height: 24px;
    background-color: var(--primary-color);
    border: 4px solid var(--bg-body);
    border-radius: 50%;
    z-index: 1;
}

.page-about__timeline-year {
    font-size: 1.4rem;
    color: var(--gold-color);
    margin-bottom: 10px;
    font-weight: 700;
}

.page-about__timeline-item p {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text-secondary);
}

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

.page-about__feature-item {
    background-color: var(--bg-body);
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-color);
    transition: transform 0.3s ease;
}

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

.page-about__feature-title {
    font-size: 1.4rem;
    color: var(--primary-color);
    margin-bottom: 15px;
    font-weight: 600;
}

.page-about__feature-item p {
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--text-secondary);
}

.page-about__experience-grid {
    display: flex;
    gap: 40px;
    align-items: center;
    margin-bottom: 40px;
}

.page-about__product-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.page-about__product-card {
    background-color: var(--bg-body);
    border-radius: 12px;
    overflow: hidden;
    text-decoration: none;
    color: var(--text-main);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-color);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
}

.page-about__product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
}

.page-about__product-image {
    width: 100%;
    height: 200px; /* Fixed height for product images */
    object-fit: cover;
    display: block;
}

.page-about__product-title {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--primary-color);
    padding: 15px 20px 10px 20px;
}

.page-about__product-card p {
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--text-secondary);
    padding: 0 20px 20px 20px;
}

.page-about__social-responsibility .page-about__text-block a {
    color: var(--secondary-color);
    text-decoration: underline;
}

.page-about__social-responsibility .page-about__text-block a:hover {
    color: var(--glow-color);
}

.page-about__team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.page-about__team-member {
    background-color: var(--bg-body);
    padding: 30px;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-color);
    transition: transform 0.3s ease;
}

.page-about__team-member:hover {
    transform: translateY(-5px);
}

.page-about__team-photo {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
    margin: 0 auto 20px auto;
    border: 3px solid var(--primary-color);
}

.page-about__member-name {
    font-size: 1.4rem;
    color: var(--text-main);
    margin-bottom: 5px;
    font-weight: 700;
}

.page-about__member-role {
    font-size: 0.95rem;
    color: var(--primary-color);
    margin-bottom: 15px;
    font-weight: 500;
}

.page-about__member-description {
    font-size: 0.9rem;
    line-height: 1.6;
    color: var(--text-secondary);
}

.page-about__benefit-list {
    list-style: none;
    padding: 0;
    margin: 0 auto 40px auto;
    max-width: 800px;
}

.page-about__benefit-list li {
    background-color: var(--bg-card);
    margin-bottom: 15px;
    padding: 20px;
    border-radius: 8px;
    font-size: 1.05rem;
    line-height: 1.6;
    color: var(--text-main);
    border-left: 5px solid var(--primary-color);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.15);
}

.page-about__benefit-list li strong {
    color: var(--gold-color);
}

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

.page-about__faq-item {
    background-color: var(--bg-body);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin-bottom: 15px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.15);
}

.page-about__faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--text-main);
    cursor: pointer;
    background-color: var(--bg-card);
    transition: background-color 0.3s ease;
    list-style: none;
}

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

.page-about__faq-question:hover {
    background-color: var(--deep-green-color);
}

.page-about__faq-toggle {
    font-size: 1.5rem;
    line-height: 1;
    color: var(--primary-color);
    transition: transform 0.3s ease;
}

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

.page-about__faq-answer {
    padding: 0 20px 20px 20px;
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text-secondary);
}

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

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

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

/* Responsive Styles */
@media (max-width: 992px) {
    .page-about__content-grid {
        flex-direction: column;
    }
    .page-about__content-grid:nth-child(even) {
        flex-direction: column;
    }
    .page-about__hero-content {
        padding: 15px;
    }
    .page-about__main-title {
        font-size: clamp(2rem, 6vw, 3rem);
    }
    .page-about__section-title {
        font-size: clamp(1.6rem, 5vw, 2.4rem);
    }
    .page-about__sub-title {
        font-size: 1.3rem;
    }
    .page-about__feature-title,
    .page-about__value-title {
        font-size: 1.25rem;
    }
}

@media (max-width: 768px) {
    .page-about__section {
        padding: 40px 0;
    }
    .page-about__container {
        padding: 0 15px;
    }
    .page-about__hero-section {
        padding-bottom: 40px;
    }
    .page-about__cta-button {
        padding: 12px 25px;
        font-size: 1rem;
    }
    .page-about__intro-text {
        font-size: 1rem;
    }
    .page-about__text-block p,
    .page-about__value-card p,
    .page-about__feature-item p,
    .page-about__timeline-item p,
    .page-about__product-card p,
    .page-about__member-description,
    .page-about__benefit-list li,
    .page-about__faq-answer p {
        font-size: 0.9rem;
    }
    .page-about__product-image {
        height: 180px;
    }
    .page-about__product-title {
        font-size: 1.15rem;
    }
    .page-about__timeline-item::before {
        left: -12px;
    }
    .page-about__history-timeline {
        padding-left: 20px;
    }
    .page-about__faq-question {
        font-size: 1rem;
        padding: 15px;
    }
    
    /* Mobile image responsive adaptation */
    .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-section,
    .page-about__hero-image-wrapper,
    .page-about__hero-content,
    .page-about__image-wrapper,
    .page-about__product-card,
    .page-about__value-card,
    .page-about__feature-item,
    .page-about__team-member,
    .page-about__faq-item {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        padding-left: 15px;
        padding-right: 15px;
    }
    .page-about__hero-section {
        padding-left: 0 !important;
        padding-right: 0 !important;
        padding-top: 10px !important; /* body已承担 --header-offset，此处禁止 var(--header-offset) */
    }
    .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% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        white-space: normal !important;
        word-wrap: break-word !important;
        padding-left: 15px;
        padding-right: 15px;
    }
    .page-about__cta-buttons,
    .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 {
        display: flex;
        flex-direction: column;
    }
}