body {
    margin: 0;
    background: #f5f5f7;
    color: #1d1d1f;
    font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", sans-serif;
    line-height: 1.8;
}

.container {
    max-width: 760px;
    margin: auto;
    padding: 48px 24px;
}

h1 {
    font-size: 34px;
    margin-bottom: 8px;
}

.subtitle {
    color: #666;
    margin-bottom: 32px;
}

h2 {
    margin-top: 40px;
}

h3 {
    margin-top: 28px;
}

hr {
    border: none;
    border-top: 1px solid #e5e5e5;
    margin: 40px 0;
}

a {
    color: #007AFF;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

.footer {
    margin-top: 48px;
    color: #888;
    font-size: 14px;
}