*, *::before, *::after { box-sizing: border-box; }
html, body { height: 100%; }
body {
    margin: 0;
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans JP", Arial, sans-serif;
    line-height: 1.6;
    color: #111;
    background: #fff;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }

.container {
    width: 100%;
    margin: 0;
    padding: 0;
    min-height: 100vh;
}

header {
    padding: 12px 0 16px;
    border-bottom: 1px solid #eee;
    margin-bottom: 16px;
}

main {
    padding: 8px 0;
}

footer {
    padding: 16px 0 12px;
    border-top: 1px solid #eee;
    margin-top: 24px;
    font-size: 14px;
    color: #666;
}

@media (max-width: 760px) {
}