:root {
    --bg: #ffffff;
    --fg: #1f2937;
    --muted: #6b7280;
    --link: #0f3b64;
    --border: #e5e7eb;
    --maxw: 820px;
}
* {
    box-sizing: border-box
}
html, body {
    height: 100%
}
body {
    margin: 0;
    background: #ffffff;
    color: var(--fg);
    font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans JP", "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
    line-height: 1.8;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}
.container {
    max-width: var(--maxw);
    margin: auto;
    padding: 0 12px
}
.section {
    padding: 18px 0
}
.site-header {
    background: #fff;
    border-bottom: 1px solid var(--border)
}
.title-image {
    display: block;
    max-width: 100%;
    height: auto;
    max-height: 44px;
    margin: 6px 0;
}
h2 {
    position: relative;
    margin: 0 0 .6em;
    font-size: 18px;
    font-weight: 700;
    padding-left: 1.6em;
    line-height: 1.4;
}
h2::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0.1em;
    width: 1.05em;
    height: 1.05em;
    background: url("star.svg") no-repeat center / contain;
}
.greeting {
    display: grid;
    gap: 12px;
    grid-template-columns: 1fr;
}
.greeting__media {
    margin: 0;
    text-align: center;
}
.greeting__media img {
    width: 100%;
    max-width: 160px;
    height: auto;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: #eef2f7;
}
.greeting__media figcaption {
    margin-top: 6px;
    color: var(--muted);
    font-size: .95em;
}
@media (min-width: 720px) {
    .greeting {
        grid-template-columns: 1fr 300px;
        align-items: start;
    }
}
.plain-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 15px;
}
.plain-table th, .plain-table td {
    padding: 8px 6px;
    vertical-align: top;
    border-top: 1px solid var(--border);
}
.plain-table th {
    white-space: nowrap;
    color: #111;
    font-weight: 700;
    width: 1%;
    padding-right: 14px;
    text-align: left;
}
.plain-table tr:first-child th,
.plain-table tr:first-child td {
    border-top: 0
}
p {
    font-size: 15px;
    margin: .45em 0
}
a {
    color: var(--link);
    text-decoration: none
}
a:hover {
    text-decoration: underline
}
.site-footer {
    border-top: 1px solid var(--border);
    padding: 10px 0
}
.foot {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: .6rem
}
.toplink {
    display: inline-block;
    padding: .15em .45em;
    border-radius: 999px;
    border: 1px solid var(--border);
    color: var(--link);
    text-decoration: none;
}
.toplink:hover {
    text-decoration: none
}