/* style/about.css */

/* Custom Colors */
:root {
    --color-primary: #11A84E; /* 主色调 */
    --color-secondary: #22C768; /* 辅助色 */
    --color-button-gradient-start: #2AD16F; /* 按钮渐变开始 */
    --color-button-gradient-end: #13994A; /* 按钮渐变结束 */
    --color-card-bg: #11271B; /* Card B G */
    --color-background: #08160F; /* 背景 */
    --color-text-main: #F2FFF6; /* Text Main */
    --color-text-secondary: #A7D9B8; /* Text Secondary */
    --color-border: #2E7A4E; /* 边框 */
    --color-glow: #57E38D; /* Glow */
    --color-gold: #F2C14E; /* Gold */
    --color-divider: #1E3A2A; /* Divider */
    --color-deep-green: #0A4B2C; /* Deep Green */
}

/* Base styles for the page-about scope */
.page-about {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    color: var(--color-text-main); /* Default text color for the page */
    background-color: var(--color-background); /* Page background from custom colors */
}

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

.page-about__section-title {
    font-size: 2.5em;
    color: var(--color-gold);
    text-align: center;
    margin-bottom: 40px;
    position: relative;
    padding-bottom: 10px;
    font-weight: bold;
}

.page-about__section-title::after {
    content: '';
    position: absolute;
    left: 50%;
    bottom: 0;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(to right, var(--color-primary), var(--color-secondary));
    border-radius: 2px;
}

.page-about__card {
    background-color: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: 10px;
    padding: 30px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    color: var(--color-text-main);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-about__card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
}

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

.page-about__dark-section {
    background-color: var(--color-deep-green); /* Using Deep Green for dark sections */
    color: var(--color-text-main);
    padding: 60px 0;
}
.page-about__dark-section .page-about__section-title {
    color: var(--color-gold);
}
.page-about__dark-section .page-about__section-title::after {
    background: linear-gradient(to right, var(--color-button-gradient-start), var(--color-button-gradient-end));
}

/* Buttons */
.page-about__btn {
    display: inline-block;
    padding: 12px 25px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: bold;
    font-size: 1em;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
    box-sizing: border-box; /* Crucial for responsive buttons */
    white-space: normal; /* Allow text to wrap */
    word-wrap: break-word; /* Break long words */
}

.page-about__btn-primary {
    background: var(--color-button-gradient-start); /* Using start color for solid look */
    background: linear-gradient(180deg, var(--color-button-gradient-start) 0%, var(--color-button-gradient-end) 100%);
    color: #ffffff;
    border: 2px solid transparent;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

.page-about__btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.3);
    opacity: 0.9;
}

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

.page-about__btn-secondary:hover {
    background-color: var(--color-primary);
    color: #ffffff;
}

/* Hero Section */
.page-about__hero-section {
    position: relative;
    width: 100%;
    display: flex;
    flex-direction: column; /* Ensure image is above content */
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding-top: 10px; /* Small decorative top padding */
}

.page-about__hero-image-wrapper {
    width: 100%;
    position: relative;
    padding-bottom: 56.25%; /* 16:9 Aspect Ratio */
    height: 0;
    overflow: hidden;
}

.page-about__hero-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.page-about__hero-content-wrapper {
    position: relative; /* Relative to hero section, not absolute over image */
    text-align: center;
    padding: 60px 20px;
    background-color: var(--color-background); /* Ensure content has its own background */
    width: 100%;
    z-index: 1; /* Ensure it's above other elements if any, but not overlapping image */
}

.page-about__main-title {
    font-size: clamp(2.2em, 4vw, 3.5em); /* Responsive font size for H1 */
    color: var(--color-gold);
    margin-bottom: 20px;
    line-height: 1.2;
    font-weight: 700;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.page-about__intro-text {
    font-size: 1.2em;
    color: var(--color-text-secondary);
    max-width: 800px;
    margin: 0 auto 30px auto;
}

.page-about__cta-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap; /* Allow buttons to wrap on smaller screens */
    width: 100%;
    max-width: 600px;
    margin: 0 auto;
}

/* Mission Section */
.page-about__mission-section {
    padding: 80px 0;
    text-align: center;
}

.page-about__content-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
    text-align: left;
}

.page-about__content-grid .page-about__text-block p {
    color: var(--color-text-secondary);
    margin-bottom: 15px;
}

.page-about__image-block {
    display: flex;
    justify-content: center;
    align-items: center;
}

.page-about__image {
    width: 100%;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.4);
    display: block;
}

/* Values Section */
.page-about__values-section {
    padding: 80px 0;
    background-color: var(--color-background);
}

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

/* Why Choose Us Section */
.page-about__why-choose-us-section {
    padding: 80px 0;
    text-align: center;
}

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

.page-about__feature-item {
    background-color: var(--color-card-bg);
    border-radius: 10px;
    padding: 30px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    text-align: left;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.page-about__feature-image {
    width: 100%;
    height: 250px; /* Fixed height for consistency, object-fit will handle aspect */
    object-fit: cover;
    border-radius: 8px;
    margin-bottom: 20px;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.2);
    display: block;
}

.page-about__feature-title {
    font-size: 1.6em;
    color: var(--color-gold);
    margin-bottom: 15px;
}

.page-about__feature-item p {
    color: var(--color-text-secondary);
}

/* History Section */
.page-about__history-section {
    padding: 80px 0;
    background-color: var(--color-background);
    text-align: center;
}

.page-about__timeline {
    position: relative;
    max-width: 900px;
    margin: 60px auto 0 auto;
    padding: 20px 0;
}

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

.page-about__timeline-item {
    position: relative;
    width: 50%;
    padding: 20px 0;
    padding-right: 40px;
    text-align: right;
    box-sizing: border-box;
}

.page-about__timeline-item:nth-child(even) {
    margin-left: 50%;
    padding-left: 40px;
    padding-right: 0;
    text-align: left;
}

.page-about__timeline-item::before {
    content: '';
    position: absolute;
    top: 50%;
    right: -20px;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    background-color: var(--color-primary);
    border-radius: 50%;
    border: 3px solid var(--color-card-bg);
    z-index: 1;
}

.page-about__timeline-item:nth-child(even)::before {
    left: -20px;
    right: auto;
}

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

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

/* CTA Section */
.page-about__cta-section {
    padding: 80px 0;
    text-align: center;
}

.page-about__cta-description {
    font-size: 1.2em;
    color: var(--color-text-secondary);
    max-width: 800px;
    margin: 0 auto 40px auto;
}

/* FAQ Section */
.page-about__faq-section {
    padding: 80px 0;
    background-color: var(--color-background);
}

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

.page-about__faq-item {
    background-color: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    margin-bottom: 15px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.page-about__faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 25px;
    font-size: 1.2em;
    font-weight: bold;
    color: var(--color-text-main);
    cursor: pointer;
    background-color: var(--color-deep-green); /* Slightly darker background for question */
    border-bottom: 1px solid var(--color-border);
    transition: background-color 0.3s ease;
    list-style: none; /* Remove default marker for details summary */
}
.page-about__faq-question::-webkit-details-marker { /* For Webkit browsers */
    display: none;
}

.page-about__faq-question:hover {
    background-color: var(--color-primary);
    color: #ffffff;
}

.page-about__faq-toggle {
    font-size: 1.5em;
    line-height: 1;
    margin-left: 20px;
    color: var(--color-gold);
    transition: transform 0.3s ease;
}

.page-about__faq-item[open] .page-about__faq-toggle {
    transform: rotate(45deg); /* Rotate plus to become cross */
}

.page-about__faq-answer {
    padding: 20px 25px;
    font-size: 1em;
    color: var(--color-text-secondary);
    background-color: var(--color-card-bg);
    border-top: 1px solid var(--color-divider);
}


/* Responsive Design */
@media (max-width: 1024px) {
    .page-about__content-grid {
        grid-template-columns: 1fr;
    }
    .page-about__content-grid .page-about__image-block {
        order: -1; /* Image above text on smaller screens */
        margin-bottom: 30px;
    }
    .page-about__timeline::before {
        left: 20px; /* Move timeline line to left */
    }
    .page-about__timeline-item {
        width: 100%;
        padding-left: 60px;
        padding-right: 20px;
        text-align: left;
    }
    .page-about__timeline-item:nth-child(even) {
        margin-left: 0;
        padding-left: 60px;
        padding-right: 20px;
        text-align: left;
    }
    .page-about__timeline-item::before,
    .page-about__timeline-item:nth-child(even)::before {
        left: 10px;
        right: auto;
    }
}

@media (max-width: 768px) {
    .page-about {
        font-size: 16px;
        line-height: 1.6;
    }
    .page-about__section-title {
        font-size: 2em;
        margin-bottom: 30px;
    }
    .page-about__main-title {
        font-size: clamp(1.8em, 7vw, 2.5em); /* More aggressive clamp for mobile H1 */
    }
    .page-about__intro-text {
        font-size: 1em;
    }
    .page-about__cta-buttons {
        flex-direction: column;
        gap: 15px;
    }
    .page-about__btn {
        width: 100% !important; /* Force full width on mobile */
        max-width: 100% !important;
        padding: 15px 10px !important;
        font-size: 1.1em !important;
        white-space: normal !important;
        word-wrap: break-word !important;
    }

    /* General responsive for containers and images/videos/buttons */
    .page-about__section,
    .page-about__card,
    .page-about__container,
    .page-about__hero-content-wrapper,
    .page-about__content-grid,
    .page-about__values-grid,
    .page-about__feature-list,
    .page-about__timeline,
    .page-about__faq-list {
      max-width: 100% !important;
      width: 100% !important;
      box-sizing: border-box !important;
      padding-left: 15px !important;
      padding-right: 15px !important;
      overflow: hidden !important; /* Ensure no overflow */
    }

    /* Images responsive */
    .page-about img {
      max-width: 100% !important;
      width: 100% !important;
      height: auto !important;
      display: block !important;
    }
    .page-about__feature-image {
        height: auto !important; /* Allow height to adjust on mobile */
    }

    /* Video responsive (if any, though none in this about.html) */
    .page-about video,
    .page-about__video {
      max-width: 100% !important;
      width: 100% !important;
      height: auto !important;
      display: block !important;
    }
    .page-about__video-section,
    .page-about__video-container,
    .page-about__video-wrapper {
      max-width: 100% !important;
      width: 100% !important;
      box-sizing: border-box !important;
      padding-left: 15px !important;
      padding-right: 15px !important;
      overflow: hidden !important;
    }
    .page-about__video-section {
        padding-top: 10px !important; /* Small top padding, not header-offset */
    }

    .page-about__faq-question {
        font-size: 1.1em;
        padding: 15px 20px;
    }
    .page-about__faq-answer {
        padding: 15px 20px;
    }
}