:root{--bg:#fbfaf7;--surface:#fff;--text:#1f2328;--muted:#5d6670;--line:#e4e1da;--accent:#0b7a5a;--accent-ink:#fff;--sub:#c00;--radius:10px;color-scheme:light dark}@media (prefers-color-scheme:dark){:root{--bg:#15181c;--surface:#1d2126;--text:#e8e6e3;--muted:#a0a8b0;--line:#2e343b;--accent:#3cc49a;--accent-ink:#0d1512}}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{background:var(--bg);color:var(--text);margin:0;font-family:system-ui,-apple-system,Hiragino Sans,Noto Sans JP,Yu Gothic UI,sans-serif;font-size:17px;line-height:1.85}img{max-width:100%;height:auto;display:block}a{color:var(--accent)}.wrap{max-width:1040px;margin:0 auto;padding:0 16px}main.wrap{padding-bottom:48px}h1{margin:24px 0 12px;font-size:1.75rem;line-height:1.4}h2{margin:40px 0 12px;font-size:1.35rem;line-height:1.45}h3{font-size:1.1rem;line-height:1.5}.site-header{background:var(--surface);border-bottom:1px solid var(--line)}.header-inner{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:8px 24px;padding-top:12px;padding-bottom:12px;display:flex}.logo{color:var(--text);font-size:1.2rem;font-weight:700;text-decoration:none}.logo small{color:var(--muted);letter-spacing:.05em;font-size:.7rem;font-weight:400;display:block}.site-header ul{flex-wrap:wrap;gap:4px 16px;margin:0;padding:0;font-size:.92rem;list-style:none;display:flex}.site-header a{color:var(--text);text-decoration:none}.site-header a[aria-current]{color:var(--accent);font-weight:700}.btn{background:var(--accent);color:var(--accent-ink);border-radius:999px;padding:10px 18px;font-weight:700;text-decoration:none;display:inline-block}.btn-sub{background:var(--sub);color:#fff}.intro{padding:16px 0 8px}.lead{color:var(--muted)}.grid{grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:20px;display:grid}.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);flex-direction:column;display:flex;overflow:hidden}.card a{color:var(--text);text-decoration:none}.card img{aspect-ratio:16/9;object-fit:cover;width:100%}.card h3{margin:10px 14px 4px}.card-desc{color:var(--muted);flex:1;margin:0 14px;font-size:.88rem;line-height:1.6}.card time{color:var(--muted);margin:8px 14px 12px;font-size:.8rem}.crumbs ol{color:var(--muted);flex-wrap:wrap;gap:4px;margin:16px 0 0;padding:0;font-size:.82rem;list-style:none;display:flex}.crumbs li+li:before{content:"›";margin-right:4px}.crumbs a{color:var(--muted)}.post{max-width:760px;margin:0 auto}.post .meta{color:var(--muted);margin:0 0 16px;font-size:.85rem}.post .hero{border-radius:var(--radius);aspect-ratio:16/9;object-fit:cover;width:100%}.summary,.toc{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);margin:24px 0;padding:4px 20px 8px}.summary{border-left:5px solid var(--accent)}.summary h2,.toc h2{margin:12px 0 4px;font-size:1rem}.body h2{border-bottom:2px solid var(--line);padding-bottom:6px}.body blockquote{border-left:4px solid var(--line);color:var(--muted);margin:16px 0;padding:4px 16px}.body table{border-collapse:collapse;width:100%;display:block;overflow-x:auto}.body th,.body td{border:1px solid var(--line);padding:6px 10px}.faq details{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);margin:8px 0;padding:10px 16px}.faq summary{cursor:pointer;font-weight:700}.watch{border-top:2px solid var(--line);margin-top:48px;padding-top:8px}.yt{aspect-ratio:16/9;border-radius:var(--radius);background:#000;position:relative;overflow:hidden}.yt button{all:unset;cursor:pointer;width:100%;height:100%;display:block}.yt img{object-fit:cover;width:100%;height:100%}.yt .play{background:red;border-radius:12px;width:68px;height:48px;position:absolute;inset:50% auto auto 50%;transform:translate(-50%,-50%)}.yt .play:after{content:"";border:10px solid #0000;border-left:18px solid #fff;border-right-width:0;position:absolute;top:14px;left:27px}.yt iframe{border:0;width:100%;height:100%}.chapters{padding-left:1.2em;font-size:.9rem}.actions{flex-wrap:wrap;gap:12px;margin:20px 0;display:flex}.related{max-width:1040px;margin:48px auto 0}.site-footer{border-top:1px solid var(--line);background:var(--surface);text-align:center;color:var(--muted);padding:24px 0;font-size:.88rem}.site-footer a:not(.btn){color:var(--muted)}.btn-ghost{color:var(--accent);border:1px solid var(--accent);background:0 0}.muted{color:var(--muted)}h2 .count{color:var(--muted);margin-left:8px;font-size:.8rem;font-weight:400}.card .order{color:var(--accent);font-size:.78rem;font-weight:700;display:block}.guide{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);margin:16px 0 28px;padding:4px 20px}.qlist ul{padding-left:1.2em}.qlist li{margin:4px 0}.intro strong,.guide strong{color:var(--text)}
