:root{--bg:#f4f2ec;--surface:#fff;--ink:#1a2233;--muted:#666c7a;--line:#e3dfd4;--accent:#1f4fa8}
@media (prefers-color-scheme:dark){:root{--bg:#0d111c;--surface:#181e2e;--ink:#e6eaf4;--muted:#9aa3b8;--line:#2a3247;--accent:#7aa5ff}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.8 -apple-system,"Hiragino Sans","Noto Sans JP","PingFang SC",sans-serif}
main{max-width:760px;margin:0 auto;padding:16px}
h1{font-size:20px;margin:12px 0}
h2{font-size:16px;margin:20px 0 4px}
p{margin:4px 0}
a{color:var(--accent)}
table{width:100%;border-collapse:collapse;background:var(--surface);font-size:14px}
td{border:1px solid var(--line);padding:8px 10px;vertical-align:top;overflow-wrap:anywhere}
td:first-child{width:32%;color:var(--muted)}
.back{display:inline-block;margin:8px 0 16px}
footer{margin:24px 0;color:var(--muted);font-size:12px}