body {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: #f5f6f4;
    color: #20231f;
    margin: 0;
}
.wrap {
    max-width: 1000px;
    margin: auto;
    padding: 40px 20px 80px;
}
.card {
    background: white;
    border-radius: 18px;
    padding: 30px;
    margin: 20px 0;
    box-shadow: 0 8px 30px rgba(0,0,0,.06);
}
nav a {
    margin-right: 18px;
}
a { color: #276749; }
.notice {
    background: #fff3cd;
    padding: 16px 20px;
    border-radius: 12px;
}
.content p {
    line-height: 1.7;
}
.gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill,minmax(180px,1fr));
    gap: 15px;
}
.gallery img {
    width: 100%;
    height: 150px;
    object-fit: cover;
    border-radius: 10px;
    background: #eee;
}
code {
    background: #eee;
    padding: 3px 6px;
    border-radius: 5px;
}