:root{--paper:#f6f5f0;--surface:#fffefa;--ink:#232b27;--muted:#687168;--accent:#3d5d49;--line:#d9ddd4;--tint:#eaf0e7;--serif:ui-serif,'Hiragino Mincho ProN','Yu Mincho',serif}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:30px;touch-action:manipulation}body{margin:0;color:var(--ink);background:var(--paper);font-family:-apple-system,BlinkMacSystemFont,'Hiragino Kaku Gothic ProN','Yu Gothic',Meiryo,sans-serif;font-size:16px;line-height:1.8}a{color:inherit;text-underline-offset:4px}button,input{font:inherit}a:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid #769e5e;outline-offset:5px}header{border-bottom:1px solid var(--line);background:var(--surface)}.header-inner{max-width:1200px;margin:auto;padding:24px 32px;display:flex;justify-content:space-between;align-items:center;gap:30px}.brand{text-decoration:none;font-family:var(--serif);font-size:26px;font-weight:700;letter-spacing:.04em}.brand span{display:block;font-family:inherit;font-weight:400;font-size:10px;color:var(--muted);letter-spacing:.14em;margin-top:3px}nav a{text-decoration:none}header nav{display:flex;gap:28px;font-size:13px;font-weight:600}header nav a:hover{text-decoration:underline}main{max-width:1200px;margin:auto;padding:0 32px 80px}h1,h2,h3,p{margin-top:0}h1{font-size:38px;line-height:1.55;letter-spacing:.02em}h2{font-size:25px;line-height:1.5}h3{font-size:19px;line-height:1.65}.eyebrow{font-size:11px;letter-spacing:.14em;color:var(--accent);font-weight:700}.hero{padding:72px 0 66px;position:relative;border-bottom:1px solid var(--line);margin-bottom:55px}.hero h1{font-family:var(--serif);font-size:48px;letter-spacing:.05em;margin:18px 0 22px;line-height:1.65}.hero>p:not(.eyebrow){color:var(--muted);font-size:15px;line-height:2}.button{display:inline-flex;align-items:center;gap:35px;margin-top:10px;padding:14px 22px;border:1px solid var(--accent);background:var(--accent);color:white;text-decoration:none;font-size:13px}.button:hover{background:#294332}.hero-note{position:absolute;right:60px;top:120px;padding:24px 0 24px 30px;border-left:1px solid var(--line);max-width:260px}.hero-note span{font-family:var(--serif);font-size:70px;line-height:1;color:#aab5a4}.hero-note p{font-family:var(--serif);font-size:20px;margin:22px 0 0;line-height:1.9}.section-title{display:flex;justify-content:space-between;gap:20px;align-items:center;padding-bottom:14px;border-bottom:1px solid var(--ink);margin-bottom:0}.section-title h2{margin:0;font-family:var(--serif);font-size:24px}.section-title>a,.section-title>span{font-size:12px;color:var(--muted)}.article-list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));column-gap:42px}.article-list li{border-bottom:1px solid var(--line);min-width:0}.article-list li[hidden]{display:none}.article-list a{display:block;padding:25px 0;text-decoration:none}.article-list h3{font-size:17px;line-height:1.7;margin:8px 0 10px}.article-list p{font-size:13px;color:var(--muted);line-height:1.9;margin-bottom:13px}.article-list a:hover h3{color:var(--accent);text-decoration:underline}.tag{font-size:10px;color:var(--accent);letter-spacing:.06em}.read{font-size:11px;color:var(--accent);display:flex;gap:10px}.category-block{margin-top:58px}.number{font-size:14px;color:var(--muted);font-family:var(--serif);display:inline-block;margin-right:20px}.breadcrumbs{font-size:11px;color:var(--muted);padding:28px 0;display:flex;gap:10px;flex-wrap:wrap}.article-layout{display:grid;grid-template-columns:minmax(0,760px) 240px;gap:65px}.article-heading{padding:18px 0 28px}.article-heading h1{font-size:34px;line-height:1.6;margin:18px 0}.lead{font-size:16px;line-height:2;color:#4e594f}.date{font-size:10px;letter-spacing:.04em;color:var(--muted);margin:22px 0 0}.notice{padding:20px 24px;border-left:3px solid var(--accent);background:var(--tint);font-size:13px}.notice strong{font-size:12px}.notice p{margin:6px 0 0;line-height:1.9}.prose{overflow-wrap:anywhere}.prose>section{margin-top:48px}.prose h2{padding-bottom:15px;border-bottom:1px solid var(--line);font-family:var(--serif);font-size:25px;margin-bottom:22px}.prose h3{font-size:18px;margin:30px 0 14px}.prose p{font-size:15px;line-height:2.1;margin-bottom:18px}.steps{padding-left:27px}.steps li{font-size:15px;padding-left:7px;margin:0 0 15px;line-height:2}.steps li::marker{color:var(--accent);font-weight:bold}.sidebar{padding-top:35px}.sticky{position:sticky;top:32px;padding-left:22px;border-left:1px solid var(--line)}.sidebar ol{margin:10px 0 20px;padding-left:18px;font-size:12px}.sidebar li{padding:6px 0}.sidebar nav>a{font-size:12px}.sidebar a:hover{text-decoration:underline}.all-link{display:block;font-size:11px;margin-top:30px;color:var(--muted)}details{border-bottom:1px solid var(--line);padding:16px 0}summary{cursor:pointer;font-size:14px;font-weight:600;line-height:1.8}details p{padding-top:14px;margin:0!important}.sources p,.sources li{font-size:12px}.sources ul{padding-left:18px}.sources li{margin:9px 0}.sources a{color:var(--accent)}.related{margin-top:75px}.mobile-toc{display:none}.page-heading{padding:60px 0 20px}.page-heading h1{font-family:var(--serif);margin-bottom:15px}.page-heading p{font-size:14px;color:var(--muted)}.search-label{display:block;font-size:12px;margin:15px 0 8px}.search{width:100%;max-width:550px;border:1px solid #aab5a4;background:var(--surface);padding:13px 16px;border-radius:0;color:var(--ink)}#search-status{font-size:12px;color:var(--muted);margin:15px 0 25px}.info{max-width:760px;margin:60px auto}.info h1{font-family:var(--serif);margin-bottom:35px}.info h2{margin-top:35px}.info a{color:var(--accent)}footer{padding:40px 32px;border-top:1px solid var(--line);background:#eceee7;color:var(--muted);font-size:12px}footer>div{max-width:1136px;margin:auto}footer>div>a:first-child{font-family:var(--serif);font-size:20px;text-decoration:none;color:var(--ink)}footer p{margin:10px 0}.fine{max-width:680px;font-size:11px}.skip{position:absolute;top:-100px;left:16px;background:var(--ink);color:white;padding:10px 16px;z-index:10}.skip:focus{top:10px}@media(max-width:1000px){.article-layout{grid-template-columns:minmax(0,1fr) 200px;gap:35px}.hero-note{right:10px}.hero h1{font-size:42px}.article-heading h1{font-size:30px}}@media(max-width:760px){.header-inner{padding:18px 20px;gap:15px}.brand{font-size:21px}.brand span{font-size:8px;letter-spacing:.06em}header nav{gap:15px;font-size:11px}header nav a:last-child{display:none}main{padding:0 22px 55px}.hero{padding:40px 0;margin-bottom:36px}.hero h1{font-size:35px;margin:14px 0 20px;line-height:1.7}.hero>p:not(.eyebrow){font-size:13px}.hero-note{display:none}.desktop-break{display:none}.button{font-size:12px;padding:12px 16px}.article-list{grid-template-columns:1fr}.section-title h2{font-size:22px}.article-list a{padding:23px 0}.article-list h3{font-size:17px}.category-block{margin-top:40px}.article-layout{display:block}.sidebar{display:none}.breadcrumbs{font-size:10px;padding:22px 0}.article-heading{padding-top:5px}.article-heading h1{font-size:27px;line-height:1.65}.lead{font-size:14px}.notice{padding:17px 18px;font-size:12px}.mobile-toc{display:block;background:var(--surface);padding:15px 18px;margin-top:22px;border:1px solid var(--line)}.mobile-toc summary{font-size:13px}.mobile-toc ol{font-size:12px;padding-left:20px;margin-bottom:5px}.mobile-toc li{padding:5px 0}.prose>section{margin-top:36px}.prose h2{font-size:23px}.prose p,.steps li{font-size:14px}.prose h3{font-size:17px}.related{margin-top:50px}.page-heading{padding-top:40px}.info{margin-top:40px}.info h1{font-size:29px}footer{padding:30px 22px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}@media print{header,footer,.sidebar,.related,.mobile-toc,.skip{display:none}main{max-width:none;padding:0}.article-layout{display:block}.prose a::after{content:' (' attr(href) ')';font-size:9px}body{background:white}}

.prose summary h3{display:inline;font:inherit;margin:0}