:root{--bg:#f6f8f7;--ink:#1b2428;--muted:#52606a;--card:#fff;--line:#d5dcd9;--accent:#0f6b4f;--accent-ink:#fff;--warn:#fff4d6;--warn-line:#e0c46b;--ok:#e3f1e6;--ok-ink:#1f5a2c;--chk:#fdecd8;--chk-ink:#7a4510}
*{box-sizing:border-box}html{font-size:100%}
body{margin:0;font:1rem/1.55 system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;color:var(--ink);background:var(--bg)}
a{color:var(--accent)}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid #f2a900;outline-offset:2px}
.skip{position:absolute;left:-999px;top:0;background:#fff;padding:.5rem 1rem;z-index:10}.skip:focus{left:0}
header.site{background:#fff;border-bottom:1px solid var(--line)}.wrap{max-width:62rem;margin:0 auto;padding:0 1rem}
.brand{display:block;padding:.9rem 0 .2rem;font-weight:700;font-size:1.25rem;color:var(--ink);text-decoration:none}
.tag{margin:0 0 .6rem;color:var(--muted);font-size:.95rem}
nav.main{display:flex;flex-wrap:wrap;gap:.25rem 1rem;padding:0 0 .8rem}nav.main a{padding:.25rem 0;color:var(--ink)}
nav.main a[aria-current="page"]{font-weight:700;border-bottom:2px solid var(--accent)}
main{padding:1.2rem 0 2.5rem}h1{font-size:1.7rem;line-height:1.2;margin:.2rem 0 .6rem}h2{font-size:1.25rem;margin:1.6rem 0 .5rem}h3{font-size:1.05rem}
.notice{background:var(--warn);border:1px solid var(--warn-line);border-radius:6px;padding:.7rem .9rem;margin:1rem 0;font-size:.95rem}
.big{background:#fff;border:2px solid var(--accent);border-radius:10px;padding:1rem 1.2rem;margin:1rem 0}.big .n{font-size:2.2rem;font-weight:700;color:var(--accent);line-height:1.1}
table{border-collapse:collapse;width:100%;background:#fff;font-size:.95rem}th,td{border:1px solid var(--line);padding:.45rem .6rem;text-align:left;vertical-align:top}th{background:#eef3f1}
.tw{overflow-x:auto}
.grid2{display:grid;gap:.8rem;grid-template-columns:1fr}@media(min-width:44rem){.grid2{grid-template-columns:1fr 1fr}}
.form{display:grid;gap:.7rem;grid-template-columns:1fr;background:#fff;border:1px solid var(--line);border-radius:8px;padding:1rem}
@media(min-width:44rem){.form{grid-template-columns:1fr 1fr}}
label{display:block;font-size:.88rem;color:var(--muted);margin-bottom:.2rem}
input[type=number],input[type=search],select{width:100%;padding:.55rem .6rem;font:inherit;border:1px solid #8f9a9f;border-radius:6px;background:#fff;color:var(--ink)}
.check{display:flex;gap:.5rem;align-items:center;color:var(--ink);font-size:.95rem}.check input{width:1.1rem;height:1.1rem}
button,.btn{font:inherit;padding:.55rem 1rem;border-radius:6px;border:1px solid var(--accent);background:var(--accent);color:var(--accent-ink);cursor:pointer;text-decoration:none;display:inline-block}
button[disabled]{opacity:.55;cursor:not-allowed}
.result{background:#fff;border:1px solid var(--line);border-radius:8px;padding:1rem;margin:1rem 0}.result .q{font-size:1.8rem;font-weight:700;color:var(--accent)}
.badge{display:inline-block;font-size:.78rem;padding:.1rem .5rem;border-radius:999px;margin:0 .3rem .3rem 0}.badge.ok{background:var(--ok);color:var(--ok-ink)}.badge.chk{background:var(--chk);color:var(--chk-ink)}.badge.type{background:#eef0f2;color:#333}
.card{background:var(--card);border:1px solid var(--line);border-radius:8px;padding:.9rem 1rem;margin:.6rem 0}.card h3{margin:0 0 .3rem}
.small{font-size:.85rem;color:var(--muted)}
footer.site{border-top:1px solid var(--line);background:#fff;padding:1.2rem 0;font-size:.9rem;color:var(--muted)}footer.site a{color:var(--muted)}
ul.plain{padding-left:1.2rem}
.src{font-size:.85rem;color:var(--muted)}