/* 信任元素样式 */
/* 客户Logo展示 */
.clients-section {
    padding: 4rem 0;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

.clients-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

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

.clients-header h2 {
    font-size: 2.5rem;
    color: #2c3e50;
    margin-bottom: 1rem;
    font-weight: 700;
}

.clients-header p {
    font-size: 1.1rem;
    color: #6c757d;
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

.clients-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.client-logo {
    background: #fff;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    text-align: center;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.client-logo:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
    border-color: #007bff;
}

.client-logo img {
    max-width: 120px;
    max-height: 80px;
    object-fit: contain;
    filter: grayscale(100%);
    transition: filter 0.3s ease;
}

.client-logo:hover img {
    filter: grayscale(0%);
}

.client-name {
    margin-top: 1rem;
    font-size: 0.9rem;
    color: #495057;
    font-weight: 500;
}

/* 认证证书展示 */
.certificates-section {
    padding: 4rem 0;
    background: #fff;
}

.certificates-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

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

.certificates-header h2 {
    font-size: 2.5rem;
    color: #2c3e50;
    margin-bottom: 1rem;
    font-weight: 700;
}

.certificates-header p {
    font-size: 1.1rem;
    color: #6c757d;
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

.certificates-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.certificate-item {
    background: #f8f9fa;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.certificate-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}

.certificate-image {
    position: relative;
    overflow: hidden;
    height: 200px;
}

.certificate-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.certificate-item:hover .certificate-image img {
    transform: scale(1.05);
}

.certificate-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: #28a745;
    color: #fff;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.certificate-content {
    padding: 1.5rem;
}

.certificate-title {
    font-size: 1.2rem;
    color: #2c3e50;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.certificate-issuer {
    color: #6c757d;
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.certificate-date {
    color: #6c757d;
    font-size: 0.8rem;
}

.certificate-description {
    margin-top: 1rem;
    color: #495057;
    line-height: 1.6;
    font-size: 0.9rem;
}

/* 媒体报道展示 */
.media-section {
    padding: 4rem 0;
    background: linear-gradient(135deg, #e3f2fd 0%, #bbdefb 100%);
}

.media-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

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

.media-header h2 {
    font-size: 2.5rem;
    color: #1565c0;
    margin-bottom: 1rem;
    font-weight: 700;
}

.media-header p {
    font-size: 1.1rem;
    color: #1976d2;
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

.media-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.media-item {
    background: #fff;
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    border-left: 4px solid #2196f3;
}

.media-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}

.media-source {
    display: flex;
    align-items: center;
    margin-bottom: 1rem;
}

.media-logo {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    margin-right: 1rem;
    object-fit: cover;
}

.media-name {
    font-size: 1rem;
    color: #1976d2;
    font-weight: 600;
}

.media-date {
    color: #6c757d;
    font-size: 0.8rem;
    margin-left: auto;
}

.media-title {
    font-size: 1.1rem;
    color: #2c3e50;
    margin-bottom: 1rem;
    font-weight: 600;
    line-height: 1.4;
}

.media-excerpt {
    color: #495057;
    line-height: 1.6;
    margin-bottom: 1rem;
}

.media-link {
    color: #2196f3;
    text-decoration: none;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    transition: color 0.3s ease;
}

.media-link:hover {
    color: #1976d2;
}

.media-link i {
    margin-left: 0.5rem;
    font-size: 0.8rem;
}

/* 数据统计展示 */
.stats-section {
    padding: 4rem 0;
    background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    color: #fff;
}

.stats-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

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

.stats-header h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.stats-header p {
    font-size: 1.1rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

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

.stat-item {
    text-align: center;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all 0.3s ease;
}

.stat-item:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-5px);
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    background: linear-gradient(45deg, #3498db, #e74c3c);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 1.1rem;
    opacity: 0.9;
    font-weight: 500;
}

.stat-description {
    margin-top: 0.5rem;
    font-size: 0.9rem;
    opacity: 0.7;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .clients-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
        gap: 1rem;
    }
    
    .certificates-grid {
        grid-template-columns: 1fr;
    }
    
    .media-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
    
    .clients-header h2,
    .certificates-header h2,
    .media-header h2,
    .stats-header h2 {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .client-logo {
        padding: 1.5rem;
    }
    
    .certificate-content,
    .media-item {
        padding: 1.5rem;
    }
}