img {
    width: 63%;
    height: auto;
}

body {
    font-family: Roboto, -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Helvetica, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", SimSun, sans-serif;
    color: #1a1a1a;
    line-height: 1.65;
}

li {
    margin: 0.3rem;
}

@media (min-width: 768px) {
    .maindiv {
        margin: 6%;
        margin-top: 6rem;
        margin-right: 15rem;
        margin-left: 10rem;
    }
}

p {
    margin-top: 0.5rem;
}

h1 {
    font-size: 2.1rem;
    line-height: 1.25;
    margin-bottom: 0.5rem;
}

h2 {
    margin-top: 2.5rem;
    margin-bottom: 0.5rem;
}

.byline {
    color: #666;
    font-size: 0.95rem;
    margin-bottom: 2rem;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0;
}

th, td {
    border: 1px solid #ccc;
    padding: 0.5rem 0.75rem;
    text-align: left;
}

th {
    background-color: #f5f5f5;
}

code {
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    font-size: 0.9em;
    word-break: break-all;
}

.site-footer {
    margin-top: 3rem;
    padding-top: 1rem;
    border-top: 1px solid #ddd;
    color: #666;
    font-size: 0.9rem;
}