/* 关于我们页面样式 */
.about-container {
    min-height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 2rem;
}

.back-link {
    margin-bottom: 2rem;
}

.back-button {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: white;
    text-decoration: none;
    opacity: 0.9;
    transition: opacity 0.3s ease;
    font-size: 0.95rem;
}

.back-button:hover {
    opacity: 1;
}

.back-button svg {
    transition: transform 0.3s ease;
}

.back-button:hover svg {
    transform: translateX(-4px);
}

.about-header {
    text-align: center;
    margin-bottom: 3rem;
}

.about-title {
    font-size: 3rem;
    font-weight: 700;
    color: white;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
    position: relative;
    display: inline-block;
    padding-bottom: 1rem;
}

.about-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80%;
    height: 4px;
    background: linear-gradient(90deg, #8b5cf6 0%, #6366f1 100%);
    border-radius: 2px;
}

.about-content {
    max-width: 900px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

.about-section {
    background: var(--card-bg);
    border-radius: 16px;
    padding: 2.5rem;
    box-shadow: var(--shadow-lg);
}

.section-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.section-icon {
    width: 56px;
    height: 56px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.section-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

.section-text {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin: 0;
}

.mission-list {
    list-style: none;
    padding: 0;
    margin: 1.5rem 0 0 0;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.mission-list li {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.mission-list li svg {
    color: var(--primary-color);
    flex-shrink: 0;
    margin-top: 0.2rem;
}

.workflow-list {
    list-style: none;
    padding: 0;
    margin: 1.5rem 0 0 0;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    counter-reset: workflow-counter;
}

.workflow-list li {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    counter-increment: workflow-counter;
}

.workflow-number {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--primary-color);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.workflow-content {
    flex: 1;
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.6;
    padding-top: 0.5rem;
}

.workflow-content strong {
    color: var(--text-primary);
    font-weight: 600;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.feature-box {
    border-radius: 12px;
    padding: 1.5rem;
    border: 1px solid rgba(0, 0, 0, 0.1);
}

.feature-box-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.feature-box-text {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .about-container {
        padding: 1rem;
    }

    .about-title {
        font-size: 2rem;
    }

    .about-section {
        padding: 1.5rem;
    }

    .section-title {
        font-size: 1.5rem;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .section-header {
        flex-direction: column;
        align-items: flex-start;
    }
}