:root{--ink:#202723;--muted:#657069;--line:#dfe5df;--accent:#2e604b;--soft:#f5f7f3;--warm:#b07139}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#fff;color:var(--ink);font-family:"Yu Gothic",Meiryo,system-ui,sans-serif;line-height:1.95;font-size:17px}a{color:var(--accent);text-underline-offset:4px}a:hover{color:#8b531e}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid #bc7b30;outline-offset:4px}img{display:block;max-width:100%;height:auto}header.site{border-bottom:1px solid var(--line);padding:22px max(24px,calc((100vw - 1160px)/2));display:flex;align-items:center;justify-content:space-between;gap:20px}.brand{font-size:21px;font-weight:800;letter-spacing:.09em;text-decoration:none;color:var(--ink)}.brand small{display:block;font-size:11px;letter-spacing:.12em;font-weight:500}.topnav{display:flex;gap:24px;font-size:13px;flex-wrap:wrap}.crumb{max-width:1100px;margin:24px auto 34px;font-size:12px;color:var(--muted);padding:0 24px}.intro{max-width:1080px;padding:0 24px;margin:auto}.category{font-size:13px;letter-spacing:.1em;color:var(--warm);font-weight:700;margin:0 0 14px}h1{font-size:clamp(28px,3.7vw,44px);line-height:1.55;letter-spacing:.025em;margin:0 0 26px;font-weight:800;max-width:980px}.lead{max-width:820px;font-size:18px;line-height:2;margin:0 0 32px}.hero{margin:32px 0 0}.hero img{width:100%;border-radius:5px;aspect-ratio:3/2;object-fit:cover;max-height:610px}.layout{max-width:1100px;display:grid;grid-template-columns:minmax(0,760px) 235px;gap:62px;margin:55px auto 0;padding:0 24px}.bodytext{min-width:0}.bodytext section{margin:0 0 56px;scroll-margin-top:20px}h2{font-size:25px;line-height:1.65;letter-spacing:.025em;margin:0 0 22px;padding-left:18px;border-left:4px solid var(--accent)}h3{font-size:21px}p{margin:0 0 21px}.bodytext section p:last-child{margin-bottom:0}.toc{font-size:13px;border-top:3px solid var(--accent);padding-top:16px;position:sticky;top:20px;max-height:85vh;overflow:auto}.toc strong{font-size:14px}.toc ol{padding-left:20px;line-height:1.7}.toc li{margin:12px 0}.toc a{text-decoration:none}.mobile-toc{display:none}.table-wrap{overflow-x:auto;margin:28px 0;border:1px solid var(--line);border-radius:4px}table{border-collapse:collapse;width:100%;font-size:14px;line-height:1.8;min-width:490px}th,td{text-align:left;vertical-align:top;padding:15px 17px;border-bottom:1px solid var(--line)}th{background:var(--soft);font-weight:700}td:first-child{font-weight:700;width:26%}tr:last-child td{border-bottom:0}.small{font-size:12px;color:var(--muted)}.inline-photo{margin:42px 0}.inline-photo img{width:100%;border-radius:5px}.diagram{background:var(--soft);padding:30px;margin:38px 0 45px;border-radius:5px}.diagram figcaption{font-size:17px;font-weight:700;margin-bottom:22px}.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.step{background:white;padding:18px 13px;border-top:2px solid #b6cabb;font-size:13px;text-align:center;line-height:1.7}.step b{font-size:16px;display:block;margin:10px 0}.step svg{display:block;margin:auto;width:42px;height:42px;color:var(--accent)}.diagram>p{font-size:12px;color:var(--muted);margin:18px 0 0}.sources{font-size:12px;border-top:1px solid var(--line);padding:18px 0;line-height:1.8;overflow-wrap:anywhere}.sources summary{cursor:pointer;color:var(--muted);width:fit-content}.sources li{margin:10px 0}.source-inline{font-size:11px;margin-top:12px!important;color:var(--muted)}.notice{font-size:12px;color:var(--muted);padding:20px 0;border-top:1px solid var(--line);line-height:1.9}.related{margin:50px 0}.related h2{font-size:21px}.related-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:25px}.related a{text-decoration:none;font-size:14px;font-weight:700;line-height:1.7}.related img{border-radius:4px;margin-bottom:12px;aspect-ratio:3/2;object-fit:cover}.foot{background:var(--soft);margin-top:80px;padding:44px max(24px,calc((100vw - 1100px)/2));font-size:12px}.foot nav{display:flex;gap:16px 25px;flex-wrap:wrap;margin:20px 0}.foot p{margin:8px 0}.back{font-size:13px}.catalog{max-width:1160px;margin:50px auto;padding:0 24px}.cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:38px 26px;margin:35px 0 65px}.card img{aspect-ratio:3/2;object-fit:cover;border-radius:5px;margin-bottom:15px}.card a{text-decoration:none;color:var(--ink)}.card h2{font-size:19px;line-height:1.65;border:0;padding:0;margin:9px 0}.card p{font-size:13px;color:var(--muted)}.filters{display:flex;gap:10px;flex-wrap:wrap;margin:25px 0}.filters button{border:1px solid var(--line);background:white;border-radius:30px;padding:9px 17px;font:inherit;font-size:13px;cursor:pointer}.filters button[aria-pressed=true]{background:var(--accent);color:white}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}
@media(max-width:850px){.layout{display:block;max-width:790px;margin-top:28px}.aside{display:none}.mobile-toc{display:block;border:1px solid var(--line);padding:18px 22px;margin:28px 0;font-size:14px}.mobile-toc summary{cursor:pointer}.mobile-toc ol{padding-left:20px}.mobile-toc li{margin:10px 0}.cards{grid-template-columns:repeat(2,minmax(0,1fr))}.hero img{max-height:none}.topnav{gap:10px}}
@media(max-width:520px){body{font-size:16px}.site{align-items:flex-start!important;padding:18px 20px!important}.brand{font-size:18px}.brand small{font-size:9px}.topnav{max-width:116px;font-size:11px;justify-content:flex-end}.crumb{margin:18px auto 25px;padding:0 20px}.intro,.layout,.catalog{padding:0 20px}.lead{font-size:16px}.hero{margin:25px -20px 0}.hero img{border-radius:0;height:auto}.bodytext section{margin-bottom:40px}h2{font-size:22px;padding-left:13px}.diagram{padding:23px 16px;margin:32px 0}.steps{grid-template-columns:1fr;gap:11px}.step{display:grid;grid-template-columns:44px 1fr;column-gap:13px;text-align:left;padding:15px}.step svg{grid-row:span 2}.step b{font-size:16px;margin:0}.step span{font-size:13px}.cards{grid-template-columns:1fr;gap:34px}.related-grid{gap:18px}.related a{font-size:13px}.table-wrap{margin:22px 0}th,td{padding:12px}.foot{margin-top:48px}.card h2{font-size:21px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}@media print{.site,.toc,.mobile-toc,.related,.foot{display:none}.layout{display:block;max-width:none}.hero{max-width:500px}.sources{display:block}}