:root{--bg:#fbfaf7;--fg:#222;--muted:#5d625f;--line:#d8d6cf;--accent:#2f6f5e;--accent-fg:#fff;--card:#fff;--note:#fff6dc;--note-line:#e3cf8f;--link:#1d5d9b}
@media (prefers-color-scheme:dark){:root{--bg:#161a19;--fg:#e8ebe9;--muted:#a3aaa6;--line:#38403d;--accent:#5fb59f;--accent-fg:#102019;--card:#1e2422;--note:#2c2813;--note-line:#6b5d22;--link:#8cc2f0}}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.8 "Hiragino Sans","Yu Gothic UI","Meiryo",system-ui,sans-serif}
a{color:var(--link);overflow-wrap:anywhere}
.skip{position:absolute;left:-999px}.skip:focus{left:8px;top:8px;background:var(--card);padding:8px;z-index:9}
.site-header{display:flex;flex-wrap:wrap;gap:4px 16px;align-items:center;justify-content:space-between;padding:12px 16px;border-bottom:1px solid var(--line)}
.brand{font-weight:700;font-size:1.1rem;color:var(--fg);text-decoration:none}
.site-header nav a{margin-right:14px;display:inline-block;padding:6px 0;font-size:.95rem}
main,.site-footer{max-width:42rem;margin:0 auto;padding:16px}
h1{font-size:1.45rem;line-height:1.4;margin:.6em 0 .6em}
h2{font-size:1.2rem;line-height:1.4;margin:1.8em 0 .5em;padding-bottom:.2em;border-bottom:2px solid var(--line)}
h3{font-size:1.05rem;margin:1.2em 0 .3em}
.hero{padding:8px 0 4px}
.button{display:inline-block;background:var(--accent);color:var(--accent-fg);padding:12px 18px;border-radius:8px;text-decoration:none;font-weight:700}
.cards{list-style:none;padding:0;margin:0}.cards li{background:var(--card);border:1px solid var(--line);border-radius:8px;padding:12px 14px;margin:0 0 10px}
.cards a{font-weight:700;display:block}.cards .muted{display:block;margin-top:2px}
.muted,.meta{color:var(--muted);font-size:.9rem}
.crumb{font-size:.85rem;color:var(--muted)}
.note{background:var(--note);border:1px solid var(--note-line);border-radius:8px;padding:10px 14px;margin:12px 0}
.summary{background:var(--card);border:1px solid var(--line);border-radius:8px;padding:4px 16px 8px}.summary h2{border:0;margin-top:.6em}
.form{display:grid;gap:6px;margin:8px 0}
label{font-weight:600}.check{font-weight:400}
input[type=number],select{font:inherit;width:100%;max-width:20rem;padding:10px;border:1px solid var(--line);border-radius:8px;background:var(--card);color:var(--fg)}
input[type=checkbox]{width:1.2rem;height:1.2rem;vertical-align:-.2em;margin-right:6px}
:focus-visible{outline:3px solid var(--link);outline-offset:2px}
.scroll{overflow-x:auto;-webkit-overflow-scrolling:touch}
table.data{border-collapse:collapse;width:100%;min-width:30rem;font-size:.92rem;background:var(--card)}
table.data caption{text-align:left;font-size:.85rem;color:var(--muted);padding:4px 0}
table.data th,table.data td{border:1px solid var(--line);padding:8px 10px;text-align:left;vertical-align:top}
table.data thead th{background:var(--bg)}
td.num{text-align:right;white-space:nowrap}
table.kv{min-width:0}table.kv th{width:11rem}
.site-footer{border-top:1px solid var(--line);margin-top:32px;font-size:.85rem;color:var(--muted)}
.site-footer .links a{margin-right:6px}