.page-about {
    color: #FFFFFF; /* Light text on dark body background (var(--auxiliary-color) is white, so this is wrong based on system rules. Corrected for dark theme as per prompt '黑色方案' and main color #000000) */
    background-color: var(--main-color, #000000); /* Assuming shared.css sets body background to main color for a dark theme */
    padding-top: var(--header-offset, 120px); /* Ensures content is not hidden by fixed header */
    font-family: 'Arial', sans-serif;
}

.page-about__hero-section {
    position: relative;
    text-align: center;
    padding: 80px 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 500px;
    overflow: hidden;
    background-color: #0d0d0d; /* Dark background for hero */
}

.page-about__hero-container {
    position: relative;
    z-index: 10;
    max-width: 900px;
    margin: 0 auto;
    color: #FFFFFF;
}

.page-about__hero-title {
    font-size: 3.5em;
    margin-bottom: 20px;
    color: #FCBC45; /* Login button color for emphasis */
    line-height: 1.2;
    text-shadow: 0 0 10px rgba(252, 188, 69, 0.5);
}

.page-about__hero-description {
    font-size: 1.3em;
    margin-bottom: 30px;
    line-height: 1.6;
}

.page-about__hero-button {
    display: inline-block;
    background-color: #FCBC45; /* Login button color */
    color: #000000; /* Dark text on bright button */
    padding: 15px 30px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: bold;
    font-size: 1.1em;
    transition: background-color 0.3s ease, transform 0.3s ease;
}

.page-about__hero-button:hover {
    background-color: #e0a53b;
    transform: translateY(-3px);
}

.page-about__hero-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.3; /* Keep original color, but make it a subtle background */
    z-index: 1;
}

.page-about__content-wrapper {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px;
    text-align: center;
    background-color: #000000; /* Dark background for content sections */
    color: #FFFFFF;
}

.page-about__mission-section, .page-about__values-section, .page-about__why-choose-us, .page-about__cta-section {
    padding: 60px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.page-about__mission-title, .page-about__values-title, .page-about__why-choose-title, .page-about__cta-title {
    font-size: 2.8em;
    margin-bottom: 30px;
    color: #FCBC45;
    text-shadow: 0 0 8px rgba(252, 188, 69, 0.4);
}

.page-about__mission-text, .page-about__why-choose-text, .page-about__cta-description {
    font-size: 1.1em;
    line-height: 1.8;
    max-width: 900px;
    margin: 0 auto 40px;
    color: #f0f0f0;
}

.page-about__mission-image {
    width: 100%;
    max-width: 800px;
    height: auto;
    display: block;
    margin: 40px auto 0;
    border-radius: 8px;
    box-shadow: 0 0 20px rgba(252, 188, 69, 0.3);
}

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

.page-about__value-card, .page-about__benefit-card {
    background-color: rgba(252, 188, 69, 0.1);
    padding: 30px;
    border-radius: 8px;
    text-align: left;
    box-shadow: 0 0 15px rgba(0, 0, 0, 0.5);
    transition: transform 0.3s ease;
}

.page-about__value-card:hover, .page-about__benefit-card:hover {
    transform: translateY(-10px);
}

.page-about__value-heading, .page-about__benefit-heading {
    font-size: 1.8em;
    color: #FCBC45;
    margin-bottom: 15px;
}

.page-about__value-description, .page-about__benefit-description {
    font-size: 1em;
    line-height: 1.7;
    color: #e0e0e0;
}

.page-about__values-image {
    width: 100%;
    max-width: 800px;
    height: auto;
    display: block;
    margin: 40px auto 0;
    border-radius: 8px;
    box-shadow: 0 0 20px rgba(252, 188, 69, 0.3);
}

.page-about__benefit-icon {
    width: 100%;
    max-width: 600px;
    height: auto;
    border-radius: 8px;
    margin-bottom: 20px;
    box-shadow: 0 0 15px rgba(252, 188, 69, 0.2);
}

.page-about__why-choose-button {
    display: inline-block;
    background-color: #FCBC45;
    color: #000000;
    padding: 15px 30px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: bold;
    font-size: 1.1em;
    margin-top: 40px;
    transition: background-color 0.3s ease, transform 0.3s ease;
}

.page-about__why-choose-button:hover {
    background-color: #e0a53b;
    transform: translateY(-3px);
}

.page-about__cta-button {
    display: inline-block;
    padding: 15px 30px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: bold;
    font-size: 1.1em;
    margin: 20px 10px 0;
    transition: background-color 0.3s ease, transform 0.3s ease;
}

.page-about__cta-button--register {
    background-color: #FCBC45;
    color: #000000;
}

.page-about__cta-button--register:hover {
    background-color: #e0a53b;
    transform: translateY(-3px);
}

.page-about__cta-button--login {
    background-color: #FFFFFF;
    color: #000000;
}

.page-about__cta-button--login:hover {
    background-color: #f0f0f0;
    transform: translateY(-3px);
}

.page-about__cta-image {
    width: 100%;
    max-width: 800px;
    height: auto;
    display: block;
    margin: 40px auto 0;
    border-radius: 8px;
    box-shadow: 0 0 20px rgba(252, 188, 69, 0.3);
}

/* Responsive adjustments */
@media (max-width: 1024px) {
    .page-about__hero-title {
        font-size: 2.8em;
    }
    .page-about__hero-description {
        font-size: 1.1em;
    }
    .page-about__mission-title, .page-about__values-title, .page-about__why-choose-title, .page-about__cta-title {
        font-size: 2.2em;
    }
}

@media (max-width: 768px) {
    .page-about {
        padding-top: var(--header-offset-mobile, 80px); /* Adjust for mobile header offset if needed */
    }
    .page-about__hero-section {
        padding: 60px 15px;
        min-height: 400px;
    }
    .page-about__hero-title {
        font-size: 2.2em;
    }
    .page-about__hero-description {
        font-size: 1em;
    }
    .page-about__hero-button {
        padding: 12px 25px;
        font-size: 1em;
    }
    .page-about__content-wrapper {
        padding: 30px 15px;
    }
    .page-about__mission-title, .page-about__values-title, .page-about__why-choose-title, .page-about__cta-title {
        font-size: 1.8em;
    }
    .page-about__mission-text, .page-about__why-choose-text, .page-about__cta-description {
        font-size: 0.95em;
    }
    .page-about__values-grid, .page-about__benefits-grid {
        grid-template-columns: 1fr;
    }
    .page-about__value-card, .page-about__benefit-card {
        padding: 25px;
    }
    .page-about__value-heading, .page-about__benefit-heading {
        font-size: 1.5em;
    }
    .page-about__cta-button {
        display: block;
        margin: 15px auto;
        width: 90%;
    }
    .page-about img {
        max-width: 100%;
        height: auto;
    }
}

@media (max-width: 480px) {
    .page-about__hero-title {
        font-size: 1.8em;
    }
    .page-about__hero-description {
        font-size: 0.9em;
    }
    .page-about__mission-title, .page-about__values-title, .page-about__why-choose-title, .page-about__cta-title {
        font-size: 1.5em;
    }
}