/* 关于页面样式 */
.about-hero {
    padding: 6rem 0;
    background: linear-gradient(135deg, #0f172a 0%, #1e1b4b 100%);
    text-align: center;
}

.about-hero h1 {
    font-size: 3rem;
    font-weight: 700;
    color: #f8fafc;
    margin-bottom: 1rem;
}

.about-hero > .container-fluid > p {
    color: #94a3b8;
    font-size: 1.25rem;
    max-width: 600px;
    margin: 0 auto;
}

.about-content {
    padding: 6rem 0;
    background-color: #0f172a;
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
    align-items: center;
}

.about-text h2 {
    font-size: 2rem;
    font-weight: 700;
    color: #f8fafc;
    margin-bottom: 1.5rem;
}

.about-text p {
    color: #94a3b8;
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.about-image {
    background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
    border-radius: 20px;
    padding: 3rem;
    text-align: center;
    border: 1px solid #334155;
}

.about-image .logo-big {
    width: 120px;
    height: 120px;
    background: linear-gradient(135deg, #6366f1, #10b981);
    border-radius: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    font-weight: 700;
    color: white;
    margin: 0 auto 2rem;
}

.about-image h3 {
    color: #f8fafc;
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.about-image .tagline {
    color: #64748b;
}

.mission-section {
    padding: 6rem 0;
    background: linear-gradient(135deg, #1e1b4b 0%, #0f172a 100%);
}

.mission-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.mission-card {
    background: rgba(30, 41, 59, 0.5);
    border: 1px solid #334155;
    border-radius: 16px;
    padding: 2rem;
    text-align: center;
}

.mission-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.2), rgba(16, 185, 129, 0.2));
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin: 0 auto 1.5rem;
}

.mission-card h3 {
    color: #f8fafc;
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.mission-card p {
    color: #64748b;
    line-height: 1.7;
}

.contact-section {
    padding: 6rem 0;
    background-color: #0f172a;
}

.contact-section h2 {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    color: #f8fafc;
    margin-bottom: 3rem;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.contact-card {
    background: #1e293b;
    border: 1px solid #334155;
    border-radius: 16px;
    padding: 2rem;
    text-align: center;
}

.contact-card h4 {
    color: #f8fafc;
    font-size: 1.125rem;
    margin-bottom: 1rem;
}

.contact-card p {
    color: #6366f1;
    font-weight: 500;
}

.contact-card a {
    color: #6366f1;
    text-decoration: none;
}

.contact-card a:hover {
    text-decoration: underline;
}

@media (max-width: 768px) {
    .about-hero h1 {
        font-size: 2rem;
    }
    .about-grid {
        grid-template-columns: 1fr;
    }
    .contact-section h2 {
        font-size: 2rem;
    }
}