/* 内容卡片样式 */
.content-card {
    border: 1px solid #e9ecef;
    transition: all 0.3s ease;
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
}

.content-card:hover {
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
    transform: translateY(-5px);
    border-color: #0d6efd;
}

.card-icon {
    transition: all 0.3s ease;
}

.content-card:hover .card-icon {
    transform: scale(1.1);
    color: #0d6efd;
}

.card-title {
    font-weight: 700;
    color: #333;
    transition: all 0.3s ease;
}

.content-card:hover .card-title {
    color: #0d6efd;
}

.card-description {
    line-height: 1.6;
}

/* 引言部分样式 */
.intro-section {
    border: 1px solid #e9ecef;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

.section-title {
    font-weight: 600;
    color: #333;
}

.intro-text {
    font-size: 16px;
    line-height: 1.8;
    color: #555;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .content-card {
        padding: 30px 20px;
    }
    
    .card-title {
        font-size: 24px;
    }
    
    .intro-section {
        padding: 20px;
    }
    
    .intro-text {
        font-size: 14px;
    }
}

@media (max-width: 576px) {
    .content-card {
        padding: 20px 15px;
    }
    
    .card-title {
        font-size: 20px;
    }
    
    .card-description {
        font-size: 14px;
    }
    
    .intro-section {
        padding: 15px;
    }
    
    .intro-text {
        font-size: 13px;
    }
}

/* 按钮样式 */
.btn-primary {
    background-color: #0d6efd;
    border-color: #0d6efd;
    transition: all 0.3s ease;
    padding: 10px 20px;
    font-size: 16px;
    font-weight: 500;
    border-radius: 8px;
}

.btn-primary:hover {
    background-color: #0b5ed7;
    border-color: #0a58ca;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(13, 110, 253, 0.3);
}

.btn-primary:active {
    transform: translateY(0);
    box-shadow: 0 2px 6px rgba(13, 110, 253, 0.3);
}

/* 页面标题样式 */
.main-content h1 {
    font-size: 36px;
    font-weight: 700;
    color: #333;
    margin-bottom: 15px;
}

.main-content .lead {
    font-size: 18px;
    color: #6c757d;
    margin-bottom: 0;
}

/* 响应式标题样式 */
@media (max-width: 768px) {
    .main-content h1 {
        font-size: 28px;
    }
    
    .main-content .lead {
        font-size: 16px;
    }
}

@media (max-width: 576px) {
    .main-content h1 {
        font-size: 24px;
    }
    
    .main-content .lead {
        font-size: 14px;
    }
}