/**
 * 关于我们页面专属样式
 * About Us Page Styles
 */

/* ========================================
   Page Header
   ======================================== */
.page-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    padding: 180px 0 80px;
    text-align: center;
    color: var(--bg-white);
    margin-top: 80px;
}

.page-header-content h1 {
    font-size: 3.5rem;
    font-weight: 900;
    margin-bottom: 20px;
    letter-spacing: 2px;
}

.breadcrumb {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-size: 1rem;
    opacity: 0.9;
}

.breadcrumb a {
    color: var(--bg-white);
    transition: var(--transition);
}

.breadcrumb a:hover {
    color: var(--secondary-color);
}

.breadcrumb i {
    font-size: 0.8rem;
}

/* ========================================
   Who We Are Section
   ======================================== */
.who-we-are-section {
    padding: 100px 0;
    background: var(--bg-white);
}

.who-content {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 60px;
    align-items: center;
}

.who-intro {
    font-size: 1.2rem;
    line-height: 1.8;
    color: var(--text-dark);
    margin-bottom: 25px;
    font-weight: 500;
}

.who-text p {
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 20px;
    font-size: 1.05rem;
}

.who-signature {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 2px solid var(--border-color);
}

.who-signature p {
    font-weight: 700;
    color: var(--primary-color);
    font-size: 1.1rem;
}

.who-image {
    position: relative;
}

.image-placeholder {
    width: 100%;
    height: 400px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: var(--border-radius-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--bg-white);
    box-shadow: var(--shadow-xl);
}

.image-placeholder i {
    font-size: 6rem;
    opacity: 0.3;
    margin-bottom: 20px;
}

.image-placeholder span {
    font-size: 1.2rem;
    font-weight: 600;
    opacity: 0.8;
}

/* ========================================
   Capability Section
   ======================================== */
.capability-section {
    padding: 100px 0;
    background: var(--bg-light);
}

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

.capability-card {
    background: var(--bg-white);
    padding: 40px 30px;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    border: 2px solid transparent;
}

.capability-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-color);
    box-shadow: var(--shadow-xl);
}

.capability-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--bg-white);
    font-size: 2.2rem;
    margin-bottom: 25px;
}

.capability-card h3 {
    font-size: 1.4rem;
    color: var(--text-dark);
    margin-bottom: 15px;
    font-weight: 700;
}

.capability-card p {
    color: var(--text-light);
    line-height: 1.7;
    margin-bottom: 20px;
}

.capability-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.capability-list li {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-medium);
    font-size: 0.95rem;
}

.capability-list li i {
    color: var(--secondary-color);
    font-size: 0.9rem;
}

/* ========================================
   Statistics Section
   ======================================== */
.stats-section {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 40px;
}

.stat-card-large {
    text-align: center;
    padding: 30px 20px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition);
}

.stat-card-large:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-5px);
}

.stat-card-large .stat-icon {
    font-size: 3rem;
    color: var(--secondary-color);
    margin-bottom: 20px;
}

.stat-card-large .stat-number {
    font-size: 3.5rem;
    font-weight: 900;
    color: var(--bg-white);
    line-height: 1;
}

.stat-card-large .stat-suffix {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.7);
    margin-top: 5px;
}

.stat-card-large .stat-label {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.8);
    margin-top: 15px;
    font-weight: 500;
}

/* ========================================
   Culture Section
   ======================================== */
.culture-section {
    padding: 100px 0;
    background: var(--bg-white);
}

.culture-content {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 60px;
    align-items: center;
}

.culture-intro {
    font-size: 1.2rem;
    line-height: 1.8;
    color: var(--text-dark);
    margin-bottom: 40px;
    font-weight: 500;
}

.culture-item {
    display: flex;
    gap: 25px;
    margin-bottom: 35px;
    padding-bottom: 35px;
    border-bottom: 1px solid var(--border-color);
}

.culture-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.culture-item-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--bg-white);
    font-size: 1.8rem;
    flex-shrink: 0;
}

.culture-item-content h3 {
    font-size: 1.3rem;
    color: var(--text-dark);
    margin-bottom: 12px;
    font-weight: 700;
}

.culture-item-content p {
    color: var(--text-light);
    line-height: 1.7;
    font-size: 1rem;
}

.culture-image {
    position: relative;
}

/* ========================================
   Certifications Section
   ======================================== */
.certifications-section {
    padding: 100px 0;
    background: var(--bg-light);
}

.certifications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.cert-card {
    background: var(--bg-white);
    padding: 40px 30px;
    border-radius: var(--border-radius-lg);
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    border: 2px solid transparent;
}

.cert-card:hover {
    transform: translateY(-8px);
    border-color: var(--primary-color);
    box-shadow: var(--shadow-xl);
}

.cert-icon {
    width: 90px;
    height: 90px;
    margin: 0 auto 25px;
    background: linear-gradient(135deg, var(--secondary-color), var(--secondary-hover));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--bg-white);
    font-size: 2.5rem;
}

.cert-card h3 {
    font-size: 1.3rem;
    color: var(--text-dark);
    margin-bottom: 12px;
    font-weight: 700;
}

.cert-card p {
    color: var(--text-light);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* ========================================
   CTA Section (About Page Version)
   ======================================== */
.about-cta-section {
    background: linear-gradient(135deg, var(--secondary-color) 0%, var(--secondary-hover) 100%);
    padding: 100px 0;
}

.about-cta-section .cta-content {
    text-align: center;
    color: var(--bg-white);
}

.about-cta-section .cta-content h2 {
    font-size: 2.8rem;
    font-weight: 700;
    margin-bottom: 20px;
}

.about-cta-section .cta-content p {
    font-size: 1.25rem;
    margin-bottom: 40px;
    opacity: 0.95;
    max-width: 750px;
    margin-left: auto;
    margin-right: auto;
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 1024px) {
    .who-content,
    .culture-content {
        grid-template-columns: 1fr;
    }
    
    .who-image,
    .culture-image {
        order: -1;
    }
    
    .page-header-content h1 {
        font-size: 2.8rem;
    }
}

@media (max-width: 768px) {
    .page-header {
        padding: 140px 0 60px;
    }
    
    .page-header-content h1 {
        font-size: 2.2rem;
    }
    
    .breadcrumb {
        flex-wrap: wrap;
    }
    
    .who-content,
    .culture-content {
        gap: 40px;
    }
    
    .image-placeholder {
        height: 300px;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .stat-card-large .stat-number {
        font-size: 2.5rem;
    }
    
    .capability-grid,
    .certifications-grid {
        grid-template-columns: 1fr;
    }
    
    .about-cta-section .cta-content h2 {
        font-size: 2rem;
    }
    
    .about-cta-section .cta-content p {
        font-size: 1.1rem;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
}

@media (max-width: 480px) {
    .page-header-content h1 {
        font-size: 1.8rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .culture-item {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
}