*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--color-paper);color:var(--color-ink);font-family:"Hiragino Sans","Meiryo",sans-serif;font-size:var(--text-reading);line-height:1.9}a{color:var(--color-primary);text-underline-offset:.2em}button,input,textarea,select{font:inherit}button,.button,.file-load{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:var(--spacing-xs) var(--spacing-md);border:1px solid var(--color-primary);border-radius:var(--radius-sm);background:var(--color-primary);color:var(--color-paper);font-size:var(--text-control);font-weight:600;text-decoration:none;cursor:pointer}button:hover,.button:hover,.file-load:hover{filter:brightness(.93)}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible{outline:3px solid var(--color-primary);outline-offset:3px}.secondary{background:var(--color-paper);color:var(--color-primary)}.actions{display:flex;gap:var(--spacing-sm);align-items:center;flex-wrap:wrap}.site-header{padding:var(--spacing-md) var(--spacing-xl);border-bottom:1px solid var(--color-border);display:flex;gap:var(--spacing-xl);align-items:center;justify-content:space-between}.wordmark{font-size:var(--text-label);font-weight:700;color:var(--color-primary-alt);text-decoration:none;white-space:nowrap}.wordmark span{display:block;font-size:var(--text-control);font-weight:400;letter-spacing:.08em}nav{display:flex;flex-wrap:wrap;gap:var(--spacing-sm);font-size:var(--text-control)}nav a{text-decoration:none;color:var(--color-ink-muted);padding:var(--spacing-xs) 0}nav a[aria-current]{color:var(--color-primary);border-bottom:2px solid var(--color-primary)}.portal{max-width:1280px;margin:auto;padding:0 var(--spacing-xl)}.hero{padding:var(--spacing-page) 0 var(--spacing-xxl);border-bottom:1px solid var(--color-border)}.eyebrow{font-size:var(--text-control);font-weight:700;letter-spacing:.12em;color:var(--color-primary);margin:0 0 var(--spacing-md)}.hero h1{font-size:var(--text-sub);color:var(--color-primary-alt);line-height:1.5;letter-spacing:.01em;margin:0 0 var(--spacing-lg)}.hero-lead{max-width:850px;font-size:var(--text-note);line-height:1.9}.hero-meta{display:flex;gap:var(--spacing-lg);flex-wrap:wrap;margin:var(--spacing-lg) 0 var(--spacing-xl);font-weight:700;color:var(--color-primary-alt)}.hero-meta span+span{border-left:1px solid var(--color-border);padding-left:var(--spacing-lg)}.portal-section{padding:var(--spacing-xxl) 0;border-bottom:1px solid var(--color-border)}h2{font-size:var(--text-label);line-height:1.55;color:var(--color-primary-alt)}.section-title{margin-bottom:var(--spacing-lg)}.section-title h2{margin:0}.material-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--spacing-md)}.material-card{padding:var(--spacing-lg);border:1px solid var(--color-border);border-radius:var(--radius-sm);text-decoration:none;display:flex;flex-direction:column;transition:background .15s}.material-card:hover{background:var(--color-paper-sunk)}.card-no{font-size:var(--text-note);color:var(--color-primary)}.material-card h3{font-size:var(--text-note);color:var(--color-primary-alt);margin:var(--spacing-sm) 0}.material-card p{color:var(--color-ink-muted);margin:0 0 var(--spacing-md);font-size:var(--text-control)}.open-label{margin-top:auto;font-size:var(--text-control);font-weight:700}.article-list article{display:grid;grid-template-columns:200px 1fr;gap:0 var(--spacing-lg);padding:var(--spacing-md) 0;border-top:1px solid var(--color-border)}.article-list b{grid-row:1/3;color:var(--color-primary);font-size:var(--text-control)}.article-list h3{margin:0;font-size:var(--text-note)}.article-list p{margin:var(--spacing-xs) 0;font-size:var(--text-control);color:var(--color-ink-muted)}.preparation{background:var(--color-paper-sunk);padding:var(--spacing-xl);margin:var(--spacing-xl) 0;border:0;border-radius:var(--radius-sm)}.site-footer{padding:var(--spacing-xl);font-size:var(--text-control);color:var(--color-ink-muted);border-top:1px solid var(--color-border)}.doc-banner{padding:var(--spacing-lg) var(--spacing-xl);background:var(--color-paper-sunk)}.doc-banner p{margin:0 0 var(--spacing-sm)}.doc-layout{display:grid;grid-template-columns:250px minmax(0,880px);justify-content:center;gap:var(--spacing-xl);max-width:1370px;margin:var(--spacing-xl) auto;padding:0 var(--spacing-lg)}.toc{position:sticky;top:var(--spacing-md);align-self:start;max-height:85vh;overflow:auto;font-size:var(--text-control);padding-right:var(--spacing-md)}.toc a{display:block;text-decoration:none;padding:var(--spacing-xs) 0;color:var(--color-ink-muted);line-height:1.5}.toc a:hover{color:var(--color-primary)}.toc-1{font-weight:700}.doc-content{min-width:0}.doc-content h1{font-size:var(--text-body);line-height:1.5;color:var(--color-primary-alt);margin:0 0 var(--spacing-lg);padding-top:var(--spacing-sm)}.doc-content h2{margin:var(--spacing-xl) 0 var(--spacing-md);padding-top:var(--spacing-md);border-top:2px solid var(--color-primary)}.doc-content h3{font-size:var(--text-note);color:var(--color-primary-alt);margin:var(--spacing-lg) 0 var(--spacing-sm)}.doc-content h4{font-size:var(--text-reading);color:var(--color-primary);margin:var(--spacing-lg) 0 var(--spacing-sm)}.doc-content p{margin:0 0 var(--spacing-md);overflow-wrap:anywhere}.doc-content li{margin-bottom:var(--spacing-xs)}.doc-content blockquote{margin:var(--spacing-md) 0;padding:var(--spacing-md) var(--spacing-lg);background:var(--color-paper-sunk);border-left:4px solid var(--color-primary)}.doc-content blockquote p:last-child{margin-bottom:0}.doc-content table{width:100%;border-collapse:collapse;table-layout:fixed;font-size:var(--text-control);margin:var(--spacing-md) 0}.doc-content th,.doc-content td{padding:var(--spacing-sm);border:1px solid var(--color-border);text-align:left;vertical-align:top;overflow-wrap:anywhere}.doc-content th{background:var(--color-paper-sunk)}.doc-content pre{white-space:pre-wrap;word-break:break-word;background:var(--color-paper-sunk);border:1px solid var(--color-border);padding:var(--spacing-md);border-radius:var(--radius-sm);font-size:var(--text-control);line-height:1.7}.doc-content code{font-family:inherit}.copy-button{margin:0 0 var(--spacing-xs);background:var(--color-paper);color:var(--color-primary)}.doc-content label{display:block;margin:var(--spacing-sm) 0;font-weight:500}.doc-content input:not([type=checkbox]),.doc-content textarea{display:block;width:100%;border:1px solid var(--color-border);border-radius:var(--radius-sm);padding:var(--spacing-sm);background:var(--color-paper);color:var(--color-ink);margin-top:var(--spacing-xs);font-size:var(--text-reading);line-height:1.65}.doc-content textarea{resize:vertical;min-height:72px}.doc-content input[type=number]{min-width:55px;padding:var(--spacing-xs)}.file-load input{display:none}#save-status{font-size:var(--text-control);color:var(--color-ink-muted)}.print-value{display:none}.text-link{font-size:var(--text-control)}
@media(max-width:1000px){.site-header{display:block;padding:var(--spacing-md) var(--spacing-lg)}nav{margin-top:var(--spacing-sm)}.material-grid{grid-template-columns:repeat(2,1fr)}.doc-layout{display:block;max-width:850px}.toc{position:static;max-height:none;margin-bottom:var(--spacing-lg);border-bottom:1px solid var(--color-border)}.toc a{display:inline-block;margin-right:var(--spacing-sm)}.doc-content table{font-size:var(--text-control)}}
@media(max-width:600px){.portal{padding:0 var(--spacing-md)}.hero{padding:var(--spacing-xl) 0}.hero h1{font-size:var(--text-body)}.hero-lead{font-size:var(--text-reading)}.hero-meta{gap:var(--spacing-sm);font-size:var(--text-control)}.hero-meta span+span{padding-left:var(--spacing-sm)}.material-grid{grid-template-columns:1fr}.portal-section{padding:var(--spacing-xl) 0}.article-list article{display:block}.article-list h3{margin-top:var(--spacing-xs)}.preparation{padding:var(--spacing-md)}.doc-banner{padding:var(--spacing-md)}.doc-layout{padding:0 var(--spacing-md)}.site-footer{padding:var(--spacing-md)}.doc-content table{display:block;overflow-x:auto;table-layout:auto}.doc-content th,.doc-content td{min-width:120px}.doc-content h1{font-size:var(--text-label)}}
@media print{@page{size:A4;margin:16mm}html,body{height:auto;background:var(--color-paper);font-size:11pt;line-height:1.65}.site-header,.site-footer,.doc-banner,.toc,.copy-button{display:none!important}.doc-layout{display:block;margin:0;padding:0;max-width:none}.doc-content{width:100%}.doc-content h1{font-size:20pt}.doc-content h2{font-size:16pt;break-after:avoid}.doc-content h3,.doc-content h4{font-size:12pt;break-after:avoid}.doc-content p,.doc-content li{orphans:3;widows:3}.doc-content table{font-size:9pt;display:table;table-layout:fixed}.doc-content th,.doc-content td{padding:5pt;min-width:0}.doc-content textarea,.doc-content input{display:none!important}.print-value{display:block;white-space:pre-wrap;min-height:35pt;border:1px solid var(--color-border);padding:6pt;font-weight:400}.doc-content pre{font-size:10pt}.doc-content label{break-inside:avoid}.doc-content h2{break-before:page}.doc-content h2:first-of-type{break-before:auto}.doc-content a{color:var(--color-ink);text-decoration:none}}

.doc-content a{overflow-wrap:anywhere}
/* Context-preserving navigation and clear exercise steps. */
[hidden]{display:none!important}.return-bar{position:sticky;top:0;z-index:20;padding:10px 24px;display:flex;align-items:center;gap:24px;background:var(--color-paper);border-bottom:1px solid var(--color-border);font-size:16px;line-height:1.5}.return-bar a{font-weight:700}.return-bar span{font-size:14px;color:var(--color-ink-muted)}.anchor-target{display:block;scroll-margin-top:72px}.doc-content h1,.doc-content h2,.doc-content h3,.doc-content h4{scroll-margin-top:72px}.anchor-target:target+h2,.anchor-target:target+h3{background:var(--color-paper-sunk);box-shadow:-5px 0 var(--color-primary);padding-left:16px}.search-mode{background:var(--color-paper-sunk);padding:16px;margin:24px 0}.search-mode button[aria-pressed=false]{color:var(--color-primary);background:white}.toc-title{font-weight:700}.toc summary{cursor:pointer;font-weight:700}.article-list p a{white-space:nowrap}@media(max-width:600px){.return-bar{padding:10px 16px}.return-bar span{display:none}}@media print{.return-bar,.search-mode{display:none!important}[data-search-panel][hidden]{display:block!important}.anchor-target{display:none}}

.role-start{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:28px}.role-start>div{padding:24px;border:1px solid var(--color-border);border-radius:8px;background:var(--color-paper-sunk)}.role-start h2{margin:0 0 8px;font-size:22px}.role-start p{font-size:16px;margin:0 0 16px}.role-sub{display:block;font-size:16px;margin-top:14px}@media(max-width:700px){.role-start{grid-template-columns:1fr}.role-start>div{padding:20px}}