: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-bg: #08160F;
    --page-about-text-main: #F2FFF6;
    --page-about-text-secondary: #A7D9B8;
    --page-about-border: #2E7A4E;
    --page-about-glow: #57E38D;
    --page-about-gold: #F2C14E;
    --page-about-divider: #1E3A2A;
    --page-about-deep-green: #0A4B2C;
}

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

.page-about__section {
    padding: 60px 20px;
    margin-bottom: 0;
}

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

/* Hero Section */
.page-about__hero-section {
    padding-top: 10px; /* Small top padding, body handles header offset */
    padding-bottom: 40px;
    background-color: var(--page-about-bg);
    display: flex;
    flex-direction: column; /* Image above text */
    align-items: center;
    text-align: center;
}

.page-about__hero-image-wrapper {
    width: 100%;
    max-width: 1920px;
    margin-bottom: 30px;
    overflow: hidden;
    box-sizing: border-box;
}

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

.page-about__hero-content {
    max-width: 900px;
    padding: 0 20px;
}

.page-about__main-title {
    font-size: 3.2em;
    font-weight: bold;
    color: var(--page-about-text-main);
    line-height: 1.2;
    margin-bottom: 20px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

.page-about__hero-description {
    font-size: 1.2em;
    color: var(--page-about-text-secondary);
    margin-bottom: 30px;
}

/* Section Titles */
.page-about__section-title {
    font-size: 2.5em;
    color: var(--page-about-text-main);
    text-align: center;
    margin-bottom: 40px;
    font-weight: bold;
    line-height: 1.3;
}

.page-about__sub-title {
    font-size: 1.8em;
    color: var(--page-about-text-main);
    margin-top: 30px;
    margin-bottom: 20px;
    font-weight: bold;
}

.page-about__text-block {
    font-size: 1em;
    color: var(--page-about-text-secondary);
    margin-bottom: 20px;
}

.page-about__image-content {
    width: 100%;
    height: auto;
    display: block;
    margin: 30px auto;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
    object-fit: cover;
}

/* Feature Grid */
.page-about__feature-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    margin-top: 40px;
}

.page-about__feature-item {
    background-color: var(--page-about-card-bg);
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.4);
    border: 1px solid var(--page-about-border);
}

.page-about__feature-title {
    font-size: 1.5em;
    color: var(--page-about-text-main);
    margin-bottom: 15px;
    font-weight: bold;
}

.page-about__feature-description {
    font-size: 0.95em;
    color: var(--page-about-text-secondary);
}

/* Values List */
.page-about__values-list {
    list-style: none;
    padding: 0;
    margin-top: 30px;
}

.page-about__values-item {
    background-color: var(--page-about-card-bg);
    padding: 20px 25px;
    margin-bottom: 15px;
    border-radius: 8px;
    border: 1px solid var(--page-about-border);
    font-size: 1.1em;
    color: var(--page-about-text-main);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.page-about__values-item strong {
    color: var(--page-about-gold); /* Highlight strong text with gold */
}

/* CTA Section */
.page-about__cta-section {
    background-color: var(--page-about-deep-green); /* Darker background for contrast */
    padding: 80px 20px;
    text-align: center;
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.page-about__image-cta {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.15; /* Subtly blend background image */
    z-index: 0;
}

.page-about__cta-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    padding: 0 20px;
}

.page-about__cta-title {
    color: var(--page-about-gold);
    font-size: 2.8em;
    margin-bottom: 25px;
    text-shadow: 0 3px 6px rgba(0, 0, 0, 0.6);
}

.page-about__cta-description {
    font-size: 1.15em;
    color: var(--page-about-text-main);
    margin-bottom: 40px;
}

.page-about__cta-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap; /* Allow wrapping on smaller screens */
    width: 100%;
}

/* Buttons */
.page-about__btn-primary,
.page-about__btn-secondary {
    display: inline-block;
    padding: 15px 35px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: bold;
    font-size: 1.1em;
    transition: all 0.3s ease;
    cursor: pointer;
    text-align: center;
    box-sizing: border-box;
    white-space: normal;
    word-wrap: break-word;
    max-width: 100%; /* Ensure buttons don't overflow */
}

.page-about__btn-primary {
    background: var(--page-about-button-gradient);
    color: var(--page-about-text-main); /* White text for contrast */
    border: 2px solid transparent;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

.page-about__btn-primary:hover {
    background: linear-gradient(180deg, #13994A 0%, #2AD16F 100%);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
    transform: translateY(-2px);
}

.page-about__btn-secondary {
    background-color: transparent;
    color: var(--page-about-gold); /* Gold text for contrast */
    border: 2px solid var(--page-about-gold);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.page-about__btn-secondary:hover {
    background-color: var(--page-about-gold);
    color: var(--page-about-bg); /* Dark text on gold hover */
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
    transform: translateY(-2px);
}

/* --- Responsive Design --- */

/* Tablet and smaller desktops */
@media (max-width: 1024px) {
    .page-about__section {
        padding: 50px 15px;
    }

    .page-about__main-title {
        font-size: 2.8em;
    }

    .page-about__section-title {
        font-size: 2.2em;
    }

    .page-about__sub-title {
        font-size: 1.6em;
    }

    .page-about__feature-grid {
        grid-template-columns: 1fr; /* Stack features on smaller screens */
    }

    .page-about__cta-title {
        font-size: 2.4em;
    }

    .page-about__cta-buttons {
        flex-direction: column; /* Stack buttons vertically */
        gap: 15px;
    }
}

/* Mobile (max-width: 768px) - MUST INCLUDE ALL REQUIRED SECTIONS */
@media (max-width: 768px) {
    .page-about {
        font-size: 16px;
        line-height: 1.6;
    }

    /* 1. HERO 主图区域 */
    .page-about__hero-section {
        padding-top: 10px !important;
        padding-bottom: 30px;
    }

    .page-about__hero-image-wrapper {
        margin-bottom: 20px;
    }

    .page-about__hero-content {
        padding: 0 15px;
    }

    .page-about__main-title {
        font-size: 2.2em;
        margin-bottom: 15px;
    }

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

    /* 2. 产品展示图区域 / General image handling */
    .page-about__feature-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    /* 3. 通用图片与容器 */
    .page-about img {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
        display: block;
    }
    
    .page-about__section,
    .page-about__container,
    .page-about__feature-item,
    .page-about__values-item,
    .page-about__cta-content {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        padding-left: 15px;
        padding-right: 15px;
        overflow: hidden; /* Prevent content overflow */
    }

    /* 4. 按钮与按钮容器 */
    .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 !important;
        font-size: 1em !important;
    }
    
    .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-direction: column !important;
        gap: 15px !important;
    }

    /* 5. 其他内容模块 */
    .page-about__section {
        padding: 40px 0;
    }

    .page-about__section-title {
        font-size: 1.8em;
        margin-bottom: 30px;
        padding: 0 15px;
    }

    .page-about__sub-title {
        font-size: 1.4em;
        padding: 0 15px;
    }

    .page-about__text-block {
        font-size: 0.9em;
        padding: 0 15px;
    }

    .page-about__feature-item,
    .page-about__values-item {
        padding: 20px;
        margin-bottom: 10px;
    }

    .page-about__feature-title {
        font-size: 1.3em;
    }

    .page-about__cta-section {
        padding: 60px 0;
    }

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

    .page-about__cta-description {
        font-size: 1em;
        padding: 0 15px;
    }

    .page-about__image-content {
        margin: 20px auto;
        border-radius: 6px;
    }
}