:root{
      --bg:#f7f7f8;
      --card:#ffffff;
      --text:#1a1a1a;
      --muted:#6b7280;
      --accent:#0066cc;
      --line:#e5e7eb;
    }
    *{box-sizing:border-box}
    html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Hiragino Kaku Gothic ProN", "Yu Gothic", "Noto Sans JP", "Helvetica Neue", Arial, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", sans-serif; line-height:1.75}
    a{color:var(--accent);text-decoration:none}
    a:hover{text-decoration:underline}
    .container{max-width:980px;margin:0 auto;padding:clamp(16px,3vw,32px)}
    header{display:flex;flex-direction:column;gap:8px;margin-bottom:20px}
    .brand{font-weight:700;letter-spacing:.02em}
    .notice{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:clamp(16px,2.5vw,28px);box-shadow:0 1px 2px rgba(0,0,0,.04)}
    h1{font-size:clamp(20px,2.8vw,28px);margin:0 0 6px 0;line-height:1.3}
    .subtitle{color:var(--muted);font-size:clamp(13px,1.6vw,14px)}
    h2{font-size:clamp(18px,2.4vw,22px);margin:28px 0 8px}
    p{margin:8px 0}
    .badge{display:inline-flex;align-items:center;gap:8px;background:#eef6ff;color:#0b69c7;border:1px solid #cfe6ff;border-radius:999px;padding:6px 12px;font-weight:600;font-size:14px}
    .grid{display:grid;grid-template-columns:1fr;gap:16px}
    @media (min-width:720px){
      .grid{grid-template-columns:1.2fr 1fr}
    }
    .card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:clamp(14px,2.2vw,22px);box-shadow:0 1px 2px rgba(0,0,0,.04)}
    .lead{font-size:clamp(15px,1.9vw,16px)}
    .table-wrap{overflow-x:auto}
    table{width:100%;border-collapse:collapse;background:var(--card);border:1px solid var(--line);border-radius:12px;overflow:hidden}
    thead th{background:#fafafa;color:#111;text-align:left;font-weight:700;border-bottom:1px solid var(--line);padding:12px 14px}
    tbody td{padding:12px 14px;border-bottom:1px solid var(--line);vertical-align:top}
    tbody tr:last-child td{border-bottom:none}
    .muted{color:var(--muted)}
    .dl{display:grid;grid-template-columns:1fr;gap:8px}
    .dl div{display:flex;gap:8px}
    .dl dt{min-width:7em;color:var(--muted)}
    .stamp{font-feature-settings:"palt" 1}
    footer{margin-top:28px;color:var(--muted);font-size:14px}
    .small{font-size:13px;color:var(--muted)}
    /* Mobile table to cards */
    @media (max-width:560px){
      table, thead, tbody, th, td, tr{display:block}
      thead{display:none}
      tbody tr{border-bottom:1px solid var(--line);padding:10px 12px}
      tbody td{border:none;padding:6px 0}
      tbody td[data-label]::before{
        content: attr(data-label) "：";
        display:inline-block;
        min-width:7em;
        color:var(--muted);
        font-weight:600;
      }
    }

    /* Dark Mode -------------------------------------------------- */
@media (prefers-color-scheme: dark) {
  :root {
    --bg:#0f0f10;
    --card:#1a1a1c;
    --text:#f2f2f3;
    --muted:#9ea3ac;
    --accent:#4da3ff;
    --line:#2e2f33;
  }

  body, html {
    background: var(--bg);
    color: var(--text);
  }

  .notice,
  .card,
  table {
    background: var(--card);
    border-color: var(--line);
  }

  thead th {
    background:#222326;
    color:#f7f7f8;
    border-bottom:1px solid var(--line);
  }

  tbody td {
    border-bottom:1px solid var(--line);
  }

  .badge {
    background:#1c2a38;
    color:#9ccaff;
    border:1px solid #2e4a6d;
  }

  a {
    color: var(--accent);
  }
}
.images {
    display: flex;
    gap: 1rem; /* 画像間の余白 */
}
.images img {
    width: 300px;
    height: auto;
}