/* 联系我们页面特有样式 */
.page-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: #fff;
    padding: var(--spacing-3xl) 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="100" height="100" patternUnits="userSpaceOnUse"><path d="M 100 0 L 0 0 0 100" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.page-header h1 {
    font-size: clamp(var(--font-size-3xl), 5vw, var(--font-size-5xl));
    margin-bottom: var(--spacing-md);
    font-weight: 700;
    position: relative;
    z-index: 1;
    line-height: 1.2;
}

.page-header p {
    font-size: clamp(var(--font-size-lg), 2vw, var(--font-size-xl));
    opacity: 0.95;
    position: relative;
    z-index: 1;
}

.contact-us {
    padding: var(--spacing-3xl) 0;
    background-color: var(--bg-primary);
}

.contact-info {
    text-align: center;
    margin-bottom: 3rem;
}

.contact-info h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: #333;
}

.contact-info p {
    font-size: 1.1rem;
    color: #666;
    line-height: 1.8;
    max-width: 800px;
    margin: 0 auto;
}

.contact-details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-3xl);
    align-items: stretch;
}

.contact-item {
    background: var(--bg-secondary);
    padding: var(--spacing-xl);
    border-radius: var(--radius-md);
    text-align: center;
    transition: all var(--transition-base);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    height: 100%;
    min-height: 280px;
}

.contact-item:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-light);
}

.contact-icon {
    font-size: 3.5rem;
    margin-bottom: var(--spacing-md);
    flex-shrink: 0;
    display: inline-block;
    transition: transform var(--transition-base);
}

.contact-item:hover .contact-icon {
    transform: scale(1.1) rotate(5deg);
}

.contact-item h3 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
    font-weight: 600;
    flex-shrink: 0;
}

.contact-item > p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-xs);
    font-size: var(--font-size-base);
}

.contact-item > p:not(:last-of-type) {
    flex-grow: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 3em;
}

.contact-item > p:last-of-type {
    margin-bottom: 0;
    margin-top: auto;
    padding-top: var(--spacing-md);
    flex-shrink: 0;
}

.contact-item a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    font-size: var(--font-size-lg);
    transition: all var(--transition-base);
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
}

.contact-item a:hover {
    color: var(--primary-dark);
    background-color: rgba(102, 126, 234, 0.1);
    transform: translateY(-2px);
}

.contact-tips {
    margin-top: 4rem;
}

.contact-tips h3 {
    font-size: 2rem;
    text-align: center;
    margin-bottom: 2rem;
    color: #333;
}

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

.tip-item {
    background: #fff;
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    border-top: 4px solid #667eea;
    transition: all 0.3s ease;
}

.tip-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.tip-number {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    margin: 0 auto 1rem;
}

.tip-item h4 {
    font-size: 1.3rem;
    margin-bottom: 0.8rem;
    color: #333;
}

.tip-item p {
    color: #666;
    line-height: 1.8;
}

.contact-cta {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: #fff;
    padding: var(--spacing-3xl) 0;
    text-align: center;
    margin-top: var(--spacing-3xl);
}

.contact-cta h2 {
    font-size: clamp(var(--font-size-3xl), 4vw, var(--font-size-4xl));
    margin-bottom: var(--spacing-md);
    font-weight: 700;
    line-height: 1.2;
}

.contact-cta p {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-xl);
    opacity: 0.95;
}

@media (max-width: 768px) {
    .page-header {
        padding: var(--spacing-xl) 0;
    }
    
    .contact-us {
        padding: var(--spacing-xl) 0;
    }
    
    .contact-details,
    .tips-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .contact-item {
        padding: var(--spacing-lg);
        min-height: 240px;
    }
    
    .contact-icon {
        font-size: 3rem;
    }
    
    .contact-cta {
        padding: var(--spacing-xl) 0;
        margin-top: var(--spacing-xl);
    }
}