/* Introduction段落美化样式 - 统一边框版本 */
.introduction-content {
    max-width: 1000px;
    margin: 0 auto;
    padding: 20px;
    background: white;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    border: 5px solid #2980b9;
    position: relative;
}

.introduction-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: #2980b9;
    opacity: 0.8;
    border-radius: 8px 8px 0 0;
}

.intro-paragraph {
    margin-bottom: 25px;
    padding: 0;
    background: transparent;
    border: none;
    box-shadow: none;
    transition: all 0.3s ease;
    position: relative;
}

.intro-paragraph:last-child {
    margin-bottom: 0;
}

.intro-paragraph:hover {
    transform: none;
    box-shadow: none;
}

.introduction-content:hover {
    box-shadow: 0 6px 20px rgba(41, 128, 185, 0.15);
    border-color: #1f5f99;
}

.intro-text {
    font-size: 18px;
    line-height: 1.8;
    color: #333;
    margin: 0;
    text-align: justify;
    font-family: 'Arial', sans-serif;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .introduction-content {
        padding: 15px;
        margin: 0 10px;
    }

    .intro-paragraph {
        margin-bottom: 20px;
    }

    .intro-text {
        font-size: 16px;
    }
}

/* 文字强调 */
.intro-text strong {
    color: #2980b9;
    font-weight: 600;
}

/* 链接样式（如果有的话） */
.intro-text a {
    color: #2980b9;
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: all 0.3s ease;
}

.intro-text a:hover {
    color: #1f5f99;
    border-bottom-color: #2980b9;
}