.bg-site{--neon:#f0735a;--char:#33333a;--char-fg:#f3efea;--fg:#1e1e22;--muted:#1e1e22a8;--line:#1e1e2224;--paper:#fbf7f4;--card:#fff;background:var(--paper);color:var(--fg);-webkit-font-smoothing:antialiased;flex-direction:column;min-height:100vh;font-family:Zen Kaku Gothic New,-apple-system,BlinkMacSystemFont,Hiragino Sans,Noto Sans JP,sans-serif;line-height:1.95;display:flex}.bg-site *{box-sizing:border-box}.bg-wrap{width:100%;max-width:760px;margin:0 auto;padding:0 22px}.bg-nav{background:var(--char);color:var(--char-fg);padding:17px 0}.bg-nav .bg-wrap{flex-wrap:wrap;align-items:center;gap:26px;display:flex}.bg-nav a{color:var(--char-fg);text-decoration:none}.bg-brand{letter-spacing:.18em;white-space:nowrap;font-size:14px;font-weight:900}.bg-nav ul{gap:20px;margin:0;padding:0;font-size:13px;list-style:none;display:flex}.bg-nav ul a{opacity:.72;transition:opacity .15s}.bg-nav ul a:hover{opacity:1}.bg-issue{letter-spacing:.14em;color:#f3efea80;white-space:nowrap;margin-left:auto;font-size:11px}.bg-cats{background:var(--char);z-index:20;border-top:1px solid #f3efea1f;padding:0 0 15px;position:sticky;top:0}.bg-cats .bg-wrap{flex-wrap:wrap;gap:8px;display:flex}.bg-cats a{color:#f3efeac7;white-space:nowrap;border:1px solid #f3efea42;border-radius:999px;padding:8px 13px;font-size:12.5px;line-height:1;text-decoration:none;transition:background .15s,color .15s,border-color .15s}.bg-cats a:hover{border-color:var(--char-fg);color:var(--char-fg)}.bg-cats a.on{background:var(--neon);border-color:var(--neon);color:#fff;font-weight:700}.bg-main{flex:1;padding:52px 0 96px}.bg-eyebrow{letter-spacing:.2em;color:var(--neon);margin:0 0 14px;font-size:11.5px;font-weight:700}.bg-title{letter-spacing:.01em;text-wrap:balance;margin:0 0 18px;font-size:clamp(25px,4vw,36px);font-weight:900;line-height:1.46}.bg-lead{color:var(--muted);margin:0 0 18px;font-size:15.5px;line-height:1.9}.bg-meta{color:var(--muted);font-variant-numeric:tabular-nums;flex-wrap:wrap;align-items:center;gap:12px;margin:0 0 34px;font-size:12.5px;display:flex}.bg-meta a{color:var(--neon);border:1px solid;border-radius:999px;padding:3px 11px;font-size:11.5px;text-decoration:none}.bg-meta a:hover{background:var(--neon);color:#fff}.bg-eyecatch{margin:0 0 36px}.bg-eyecatch img{border-radius:2px;width:100%;height:auto;display:block}.bg-toc{background:var(--card);border:1px solid var(--line);border-radius:2px;margin:0 0 40px;padding:20px 24px}.bg-toc>p{letter-spacing:.2em;color:var(--neon);margin:0 0 10px;font-size:11px;font-weight:700}.bg-toc ul{margin:0;padding-left:1.1em;font-size:14.5px;line-height:1.95}.bg-toc a{color:var(--fg);text-decoration:none}.bg-toc a:hover{color:var(--neon)}.bg-body{letter-spacing:.012em;font-size:17px}.bg-body p{margin:0 0 1.6em}.bg-body h2{border-left:4px solid var(--neon);margin:2.6em 0 .9em;padding-left:15px;scroll-margin-top:90px;font-size:clamp(19px,2.4vw,22px);font-weight:900;line-height:1.55}.bg-body h3{margin:2.1em 0 .7em;scroll-margin-top:90px;font-size:17.5px;font-weight:700}.bg-body strong{background:linear-gradient(#0000 62%,#f0735a3d 62%);font-weight:700}.bg-body a{color:var(--neon);overflow-wrap:anywhere;text-underline-offset:3px}.bg-body ul,.bg-body ol{margin:0 0 1.6em;padding-left:1.4em}.bg-body li{margin-bottom:.45em}.bg-body img{border-radius:2px;max-width:100%;height:auto;margin:2em 0;display:block}.bg-body figure{margin:2.2em 0}.bg-body figure img{margin:0}.bg-body figcaption{color:var(--muted);border-left:2px solid var(--line);margin-top:10px;padding-left:12px;font-size:12.5px;line-height:1.8}.bg-body blockquote{background:var(--card);border-left:4px solid var(--neon);margin:2em 0;padding:20px 24px;font-size:16.5px}.bg-body blockquote p:last-child{margin-bottom:0}.bg-body iframe{aspect-ratio:16/9;max-width:100%;height:auto;margin:2em 0}.bg-body table{border-collapse:collapse;max-width:100%}.bg-body hr{border:0;border-top:1px solid var(--line);margin:2.6em 0}.bg-body code{background:var(--card);border:1px solid var(--line);border-radius:2px;padding:1px 6px;font-size:.9em}.bg-body pre{background:var(--char);color:var(--char-fg);border-radius:2px;margin:2em 0;padding:20px 22px;font-size:13.5px;line-height:1.8;overflow-x:auto}.bg-body pre code{color:inherit;background:0 0;border:0;padding:0}.bg-list{border-top:1px solid var(--line);margin:0;padding:0;list-style:none}.bg-list li{border-bottom:1px solid var(--line)}.bg-list a{color:inherit;grid-template-columns:60px 1fr 22px;align-items:center;gap:20px;padding:22px 2px;text-decoration:none;display:grid}.bg-list a:hover h3{color:var(--neon)}.bg-list a:hover .bg-arr{color:var(--neon);transform:translate(4px)}.bg-list .bg-no{letter-spacing:.1em;color:var(--muted);font-variant-numeric:tabular-nums;font-size:11px;font-weight:700}.bg-list h3{margin:0 0 6px;font-size:17px;font-weight:700;line-height:1.62;transition:color .15s}.bg-list .bg-sub{color:var(--muted);font-variant-numeric:tabular-nums;align-items:center;gap:10px;font-size:12px;display:flex}.bg-list .bg-tag{color:var(--neon);border:1px solid;border-radius:999px;padding:1px 9px;font-size:11px;line-height:1.7}.bg-list .bg-arr{color:var(--muted);text-align:right;transition:transform .18s,color .18s}.bg-pager{justify-content:space-between;align-items:center;gap:12px;margin:44px 0 0;font-size:13.5px;display:flex}.bg-pager a,.bg-pager span{border:1px solid var(--line);background:var(--card);color:var(--fg);border-radius:2px;padding:11px 18px;text-decoration:none}.bg-pager>span:nth-child(2){color:var(--muted);font-variant-numeric:tabular-nums;background:0 0;border:0}.bg-pager a:hover{border-color:var(--neon);color:var(--neon)}.bg-neighbors{border-top:1px solid var(--line);gap:10px;margin-top:52px;padding-top:30px;display:grid}@media (min-width:620px){.bg-neighbors{grid-template-columns:1fr 1fr}}.bg-neighbors a{color:inherit;background:var(--card);border:1px solid var(--line);border-radius:2px;padding:15px 17px;font-size:14px;line-height:1.7;text-decoration:none;transition:border-color .15s}.bg-neighbors a:hover{border-color:var(--neon)}.bg-neighbors small{color:var(--neon);letter-spacing:.16em;margin-bottom:5px;font-size:10.5px;font-weight:700;display:block}.bg-related{border-top:1px solid var(--line);margin-top:56px;padding-top:30px}.bg-related>p{letter-spacing:.2em;color:var(--neon);margin:0 0 4px;font-size:11.5px;font-weight:700}.bg-cta{background:var(--char);color:var(--char-fg);border-radius:3px;margin-top:60px;padding:34px 30px}.bg-cta h2{margin:0 0 10px;font-size:20px;font-weight:900;line-height:1.55}.bg-cta p{color:#f3efeabd;margin:0 0 20px;font-size:14.5px;line-height:1.9}.bg-cta .bg-btns{flex-wrap:wrap;gap:10px;display:flex}.bg-cta a{color:var(--char-fg);border:1px solid #f3efea80;border-radius:2px;padding:12px 22px;font-size:14px;font-weight:700;text-decoration:none;display:inline-block}.bg-cta a.primary{background:var(--neon);border-color:var(--neon);color:#fff}.bg-note-link{background:var(--card);border:1px solid var(--line);color:var(--muted);border-radius:2px;margin:3em 0 0;padding:16px 20px;font-size:14px}.bg-note-link a{color:var(--neon)}.bg-sitemap h2{border-left:4px solid var(--neon);margin:44px 0 14px;padding-left:14px;font-size:19px;font-weight:900}.bg-cols{grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:6px 18px;margin:0;padding:0;font-size:14px;list-style:none;display:grid}.bg-cols a{color:var(--fg);text-decoration:none}.bg-cols a:hover{color:var(--neon)}.bg-foot{background:var(--char);color:#f3efeab3;padding:46px 0 40px;font-size:13px}.bg-foot a{color:var(--char-fg);text-decoration:none}.bg-foot a:hover{color:var(--neon)}.bg-foot-brand{letter-spacing:.18em;color:var(--char-fg);margin:0 0 6px;font-size:14px;font-weight:900}.bg-foot-note{margin:0 0 24px;line-height:1.9}.bg-foot ul{flex-wrap:wrap;gap:20px;margin:0 0 26px;padding:0;list-style:none;display:flex}.bg-copy{color:#f3efea66;margin:0;font-size:11.5px}@media (max-width:620px){.bg-list a{grid-template-columns:1fr 20px;gap:12px}.bg-list .bg-no{display:none}.bg-nav ul{gap:14px;font-size:12px}.bg-issue{margin-left:0}.bg-main{padding:36px 0 70px}.bg-body{font-size:16.5px}}.bg-tablewrap{border:1px solid var(--line);background:var(--card);border-radius:2px;margin:2em 0;overflow-x:auto}.bg-body .bg-tablewrap table{border-collapse:collapse;width:100%;font-size:15.5px;line-height:1.8}.bg-body .bg-tablewrap th{background:var(--char);color:var(--char-fg);text-align:left;white-space:nowrap;padding:12px 16px;font-weight:700}.bg-body .bg-tablewrap td{border-top:1px solid var(--line);vertical-align:top;padding:12px 16px}.bg-body .bg-tablewrap td:first-child{white-space:nowrap;color:var(--fg)}