:root{--accent:#e8492f;--accent-soft:#fdeeea;--text:#222;--muted:#666;--line:#e5e5e5;--bg:#fafafa;--card:#fff;--yellow:#fff7d6}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Hiragino Sans","Hiragino Kaku Gothic ProN","Noto Sans JP",Meiryo,sans-serif;color:var(--text);background:var(--bg);line-height:1.9;font-size:16px}
a{color:#1a5fb4}
img{max-width:100%;height:auto}
.wrap{max-width:1120px;margin:0 auto;padding:0 16px}
.site-header{background:#fff;border-bottom:3px solid var(--accent)}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:8px;padding-top:12px;padding-bottom:12px}
.logo{font-size:1.5rem;font-weight:800;color:var(--accent);text-decoration:none;letter-spacing:.05em}
.gnav a{margin-left:16px;color:var(--text);text-decoration:none;font-size:.9rem;font-weight:600}
.container{padding-top:24px;padding-bottom:48px}
.container.has-side{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:32px}
@media(max-width:900px){.container.has-side{grid-template-columns:1fr}.gnav a{margin:0 12px 0 0}}
main{min-width:0}
.post{background:#fff;padding:32px;border-radius:8px;border:1px solid var(--line)}
@media(max-width:600px){.post{padding:20px 16px}}
.post h1{font-size:1.6rem;line-height:1.5;margin:.3em 0 .5em}
.breadcrumb{font-size:.8rem;color:var(--muted)}
.breadcrumb a{color:var(--muted)}
.meta{font-size:.85rem;color:var(--muted);margin:0 0 12px}
.pr-note{font-size:.8rem;color:var(--muted);background:#f3f3f3;padding:4px 10px;border-radius:4px;display:inline-block}
.point-box{background:var(--yellow);border:2px solid #f2c94c;border-radius:8px;padding:16px 20px;margin:20px 0}
.point-title{font-weight:800;margin:0 0 4px}
.point-box ul{margin:0;padding-left:1.2em}
.toc{border:1px solid var(--line);background:#fcfcfc;border-radius:8px;padding:16px 20px;margin:24px 0}
.toc-title{font-weight:800;margin:0 0 8px;text-align:center}
.toc ol{margin:0;padding-left:1.2em;list-style:none;counter-reset:none}
.toc li{margin:2px 0}
.toc .toc-l3{padding-left:1.2em;font-size:.92rem}
.toc a{color:var(--text);text-decoration:none}
.toc a:hover{text-decoration:underline}
.post-body h2{font-size:1.35rem;background:var(--accent);color:#fff;padding:10px 16px;border-radius:6px;margin:2.4em 0 1em;line-height:1.5}
.post-body h3{font-size:1.15rem;border-left:6px solid var(--accent);padding:4px 12px;margin:2em 0 .8em;background:var(--accent-soft)}
.post-body h4{font-size:1.05rem;border-bottom:2px dotted var(--accent);margin:1.6em 0 .6em}
.post-body strong{background:linear-gradient(transparent 60%,#ffe58a 60%)}
.table-wrap{overflow-x:auto;margin:1em 0}
table{border-collapse:collapse;width:100%;font-size:.92rem;background:#fff}
th,td{border:1px solid #ddd;padding:8px 10px;text-align:left;vertical-align:top}
th{background:var(--accent-soft)}
.admonition{border-radius:8px;padding:12px 16px;margin:1.2em 0;border:2px solid #9cc3f0;background:#eef5fd}
.admonition.warning{border-color:#f0b49c;background:#fdf1ec}
.admonition.tip{border-color:#9cd8a8;background:#eefaf0}
.admonition-title{font-weight:800;margin:0 0 4px}
.admonition p:last-child{margin-bottom:0}
.faq details{border:1px solid var(--line);border-radius:6px;margin:8px 0;background:#fff}
.faq summary{cursor:pointer;font-weight:700;padding:12px 16px}
.faq summary::before{content:"Q. ";color:var(--accent)}
.faq details>div{padding:0 16px 8px}
.faq h2,.history h2,.related h2{font-size:1.25rem;border-bottom:3px solid var(--accent);padding-bottom:4px;margin-top:2em}
.history{font-size:.85rem;color:var(--muted)}
.history ul{padding-left:1.2em}
.ad{margin:20px 0;text-align:center}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px}
.card a{display:block;height:100%;background:var(--card);border:1px solid var(--line);border-radius:8px;padding:16px;text-decoration:none;color:var(--text);transition:box-shadow .2s}
.card a:hover{box-shadow:0 4px 16px rgba(0,0,0,.08)}
.card-cat{font-size:.75rem;background:var(--accent);color:#fff;padding:2px 8px;border-radius:3px}
.card-title{font-size:1.05rem;line-height:1.5;margin:8px 0}
.card-desc{font-size:.85rem;color:var(--muted);margin:0 0 8px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.card time{font-size:.75rem;color:var(--muted)}
.list-title{font-size:1.4rem;margin:0 0 4px}
.list-desc{color:var(--muted);margin:0 0 20px}
.related{margin-top:32px}
.sidebar .side-box{background:#fff;border:1px solid var(--line);border-radius:8px;padding:16px;margin-bottom:20px}
.sidebar h2{font-size:1rem;margin:0 0 8px;border-bottom:2px solid var(--accent)}
.sidebar ul{margin:0;padding-left:1.1em;font-size:.9rem}
.sidebar li{margin:6px 0}
.site-footer{background:#2b2b2b;color:#ccc;font-size:.85rem;padding:24px 0;text-align:center}
.site-footer a{color:#eee}
.site-footer .copy{color:#999}