body {
    font-family: 'Microsoft YaHei', 'Segoe UI', Arial, sans-serif;
    line-height: 1.8;
    max-width: 1500px;
    margin: 40px auto;
    padding: 30px;
    background: #f5f5f5;
    color: #333;
}
.content {
    background: white;
    padding: 50px;
    border-radius: 12px;
    box-shadow: 0 2px 15px rgba(0,0,0,0.1);
}
.img-wrapper {
    float: left;
    margin: 0 20px 20px 0;
}
.img-wrapper img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}
.img-caption {
    margin-top: 8px;
    font-size: 14px;
    color: #666;
    font-style: italic;
    text-align: center;
    line-height: 1.4;
    padding: 5px;
    border: 1px dashed transparent;
    border-radius: 4px;
    transition: all 0.3s ease;
}
.img-caption:focus {
    outline: none;
    border-color: #667eea;
    background: #f8f9ff;
}
.img-caption:empty::before {
    content: "在此输入图片标题...";
    color: #999;
}
p {
    margin: 12px 0;
    text-align: justify;
}
h1, h2, h3 {
    clear: both;
    margin-top: 30px;
    margin-bottom: 15px;
    color: #222;
}
h1 {
    font-size: 28px;
    border-bottom: 3px solid #667eea;
    padding-bottom: 10px;
}
h2 {
    font-size: 24px;
    border-bottom: 2px solid #e5e7eb;
    padding-bottom: 8px;
}
h3 {
    font-size: 20px;
}
.content::after {
    content: "";
    display: table;
    clear: both;
}
@media (max-width: 768px) {
    body {
        padding: 15px;
        margin: 20px auto;
    }
    .content {
        padding: 25px;
    }
    .img-wrapper {
        float: none;
        max-width: 100%;
        margin: 20px 0;
    }
}