body {
    font-family: 'Microsoft YaHei', Arial, sans-serif;
    background: #f8f8f8;
    margin: 0;
    padding: 0;
    color: #222;
}
header {
    background: #fff;
    border-bottom: 2px solid #e0e0e0;
    padding: 32px 0 16px 0;
    text-align: center;
}
header h1 {
    margin: 0;
    font-size: 2.2em;
    letter-spacing: 2px;
}
main {
    max-width: 700px;
    margin: 40px auto;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
    padding: 32px 24px;
}
section {
    margin-bottom: 32px;
}
section h2 {
    color: #1a73e8;
    font-size: 1.3em;
    margin-bottom: 10px;
}
ul {
    padding-left: 20px;
}
footer {
    text-align: center;
    color: #888;
    font-size: 0.95em;
    padding: 24px 0 16px 0;
}
.section-img {
    width: 100%;
    max-width: 600px;
    display: block;
    margin: 0 auto 18px auto;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    object-fit: cover;
    height: 220px;
}