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var(--course-head-pad-x);background:var(--acc);color:var(--tile-ink);display:flex}.course-card-num{width:var(--num-badge);height:var(--num-badge);border:var(--num-border) solid var(--tile-ink);font-size:var(--font-course-count);border-radius:50%;flex:none;justify-content:center;align-items:center;display:flex}.course-card-title{color:var(--tile-ink);font-size:var(--font-course)}.course-card-count{font-size:var(--font-course-count);margin-inline-start:auto}.course-card-desc{padding:var(--course-head-pad-y) var(--course-head-pad-x);border:var(--border-width) solid var(--line);color:var(--ink2);font-size:var(--font-course-body);border-block-start:none;border-inline-start:none;margin:0;line-height:1.6}.hint-tiles{gap:var(--tile-gap);border-radius:var(--r);grid-template-columns:repeat(2,minmax(0,1fr));margin:0;padding:0;list-style:none;display:grid;overflow:hidden}.hint-tile{padding:var(--hint-pad-y) var(--hint-pad-x);background:var(--acc);color:var(--tile-ink)}.hint-tiles-single{grid-template-columns:minmax(0,1fr)}.hint-tile:nth-child(2){background:var(--tile)}.hint-tile-title{font-size:var(--font-hint);display:block}.hint-tile-sub{color:var(--hdr-nav);font-size:var(--font-hint-sub);display:block}.side-panel{gap:var(--side-gap);padding:var(--side-pad);border:var(--border-width) solid var(--line);border-radius:var(--r);background:var(--card);flex-direction:column;display:flex}.side-panel-sticky{top:var(--sticky-top);position:sticky}.side-panel-title{color:var(--muted);font-family:var(--font-display);font-size:var(--font-xs);font-weight:var(--weight-bold);letter-spacing:.1em;text-transform:uppercase;margin:0}.side-list{margin:0;padding:0;list-style:none}.side-list li{justify-content:space-between;gap:var(--space-s);padding-block:var(--side-row-pad);border-block-end:var(--border-width) solid var(--line);font-size:var(--font-side);display:flex}.side-list li:last-child{border-block-end:none}.side-list span{color:var(--muted);font-size:var(--font-side-count)}.ad-slot:empty{display:none}.ad-slot-tall{min-height:var(--ad-tall)}.ad-slot-short{min-height:var(--ad-short)}.material-page{gap:var(--material-gap);padding:var(--material-pad-y) var(--material-pad-x);border:var(--border-width) solid var(--line);border-radius:var(--r);background:var(--card);flex-direction:column;display:flex}.material-page>*{margin-block:0}.article-head{align-items:center;gap:var(--head-gap);padding:var(--title-pad-y) var(--title-pad-x);border-radius:var(--r);background:var(--acc);color:var(--tile-ink);display:flex}.article-head h1{font-size:var(--font-hero);font-weight:var(--weight-regular);margin:0;line-height:1.25}.article-meta{gap:var(--meta-gap);border-block-end:var(--border-width) solid var(--line);color:var(--muted);font-size:var(--font-meta-line);flex-wrap:wrap;margin:0;padding-block-end:var(--toc-indent);display:flex}.article-meta-author{color:var(--acc)}.material-body h2{margin-block:var(--h2-margin-top) 0;border-block-end:var(--border-width) solid var(--line);font-size:var(--font-h2);font-weight:var(--weight-light);padding-block-end:var(--h2-pad-bottom)}.material-body h3{font-size:var(--font-toc-title);font-weight:var(--weight-medium);margin-block:0}.material-body figure{align-items:center;gap:var(--space-s);padding:var(--space-l);border-radius:var(--r);background:var(--meta);flex-direction:column;margin:0;display:flex}.material-body figcaption{color:var(--muted);font-size:var(--font-sm)}.material-body pre{padding:var(--space-l) var(--space-m);background:var(--code);line-height:1.7}.material-body{gap:var(--space-m);font-size:var(--body-size);line-height:var(--body-lh);flex-direction:column;display:flex}.material-body>*{margin-block:0}.toc ol{margin:0;padding:0;list-style:none}.toc-title{margin:0 0 var(--toc-gap);font-size:var(--font-toc-title);font-weight:var(--weight-medium)}.toc-inline ol{gap:var(--toc-gap);flex-direction:column;padding-inline-start:var(--toc-indent);display:flex}.toc-inline a{font-size:var(--font-toc);text-decoration:underline}.toc-aside li{padding:var(--tile-gap) var(--space-m);border-inline-start:var(--border-width-strong) solid var(--line);font-size:var(--font-meta-line);line-height:1.45}.toc-aside li[data-depth="3"]{padding-inline-start:var(--space-xl)}.material-navigation{gap:var(--space-m);grid-template-columns:repeat(2,minmax(0,1fr));display:grid}.material-navigation a{gap:var(--space-xs);padding:var(--space-m) var(--space-l);border:var(--border-width) solid var(--line);border-radius:var(--r);background:var(--card);flex-direction:column;display:flex}.material-navigation-next{text-align:end}.material-navigation-label{color:var(--muted);font-size:var(--font-xs);letter-spacing:.08em;text-transform:uppercase}.material-navigation-title{line-height:1.4}.site-footer{border-top:var(--border-width) solid var(--hdr-line)}.footer-inner{gap:var(--gap);padding-block:var(--footer-pad-y);grid-template-columns:1.4fr repeat(3,minmax(0,1fr));display:grid}.footer-intro p{color:var(--muted);font-size:var(--font-footer);margin-block:0;line-height:1.6}.footer-columns{display:contents}.footer-columns h2{margin:0 0 var(--tile-gap);color:var(--muted);font-family:var(--font-text);font-size:var(--font-footer);font-weight:var(--weight-regular);letter-spacing:.1em;text-transform:uppercase}.footer-columns ul{margin:0;padding:0;list-style:none}.footer-columns li+li{margin-block-start:var(--space-xs)}.footer-columns a{color:var(--hdr-nav);font-size:var(--font-footer-link)}.footer-bottom{border-top:var(--border-width) solid var(--hdr-line)}.footer-bottom .shell-container{justify-content:space-between;gap:var(--space-s);padding-block:var(--footer-bottom-pad);color:var(--muted);font-size:var(--font-footer);flex-wrap:wrap;display:flex}@media (width<=768px){.shell-container{padding-inline:var(--gap-m)}.header-inner{flex-wrap:wrap}.site-menu{padding-top:var(--space-xs);flex:1 0 100%;order:1;overflow-x:auto}.main-nav a{background:var(--hdr-field);white-space:nowrap}.site-logo{flex:1;display:block}.shell-grid{gap:var(--gap-m);padding-block:var(--gap-m)}.material-navigation,.footer-inner{grid-template-columns:1fr}.material-navigation{flex-direction:column}.footer-columns{gap:var(--gap-m)}}.side-course{max-height:calc(var(--ad-tall) * 2);scrollbar-width:thin;scrollbar-color:var(--line-2) transparent;margin:0;padding:0;list-style:none;overflow:hidden auto}.side-course::-webkit-scrollbar{width:var(--scrollbar)}.side-course::-webkit-scrollbar-thumb{border-radius:var(--scrollbar);background:var(--line-2)}.side-course::-webkit-scrollbar-track{background:0 0}.side-course li{padding-block:var(--space-xs);border-block-end:var(--border-width) solid var(--line);font-size:var(--font-sm);line-height:1.35}.side-course li:last-child{border-block-end:none}.side-course [aria-current=page]{padding-inline:var(--space-s);border-inline-start:var(--border-width-strong) solid var(--acc);background:var(--panel);color:var(--ink);display:block}@media (width<=768px){.shell-grid-aside{grid-template-columns:minmax(0,1fr)}.section-tiles{grid-template-columns:repeat(2,minmax(0,1fr));grid-auto-flow:row}.section-tile-title{overflow-wrap:normal;hyphens:auto;font-size:var(--font-note)}.section-tile a{padding:var(--space-m)}.material-card{grid-template-columns:minmax(0,1fr);padding:0;overflow:hidden}.material-card-cover,.cover-card{width:100%}.material-card-body,.material-page,.article-head{padding:var(--space-m)}.article-head h1{font-size:var(--font-h3)}.course-card-head{flex-wrap:wrap}.course-card-count{margin-inline-start:0}}.material-body pre[data-language]{padding-block-start:var(--space-2xl);position:relative}.material-body pre[data-language]:before{content:attr(data-language);padding:var(--space-xs) var(--space-m);border-block-end:var(--border-width) solid var(--line);background:var(--meta);color:var(--muted);font-family:var(--font-text);font-size:var(--font-xs);letter-spacing:.06em;text-transform:uppercase;position:absolute;inset-block-start:0;inset-inline:0}.material-body [data-note]{padding:var(--note-pad-y) var(--note-pad-x);border-radius:var(--r);border-inline-start:var(--rule-accent) solid var(--note-line);background:var(--note);color:var(--ink2);font-size:var(--font-panel);line-height:1.6}.material-body [data-note=warn]{border-inline-start-color:var(--acc);background:var(--panel)}.material-body [data-download]{grid-template-columns:var(--download-icon) minmax(0, 1fr);gap:var(--download-gap) var(--card-gap);padding:var(--download-pad);border:var(--border-width) solid var(--line);border-radius:var(--r);background:var(--meta);align-items:start;display:grid}.material-body [data-download]:before{content:"";width:var(--download-icon);height:var(--download-icon);border-radius:var(--radius-sm);background:var(--acc);clip-path:polygon(38% 12%,62% 12%,62% 52%,82% 52%,50% 88%,18% 52%,38% 52%);grid-row:1/span 4}.material-body [data-download-name]{color:var(--acc);font-size:var(--font-note);font-weight:var(--weight-medium);grid-column:2;line-height:1.3}.material-body [data-download-description]{color:var(--ink2);font-size:var(--font-card-desc);grid-column:2;line-height:1.6}.material-body [data-download-link]{padding:var(--button-pad-y) var(--button-pad-x);border-radius:var(--radius-sm);background:var(--acc);color:var(--tile-ink);font-size:var(--font-card-more);grid-column:2;justify-self:start}.material-body [data-download-link=external]{border:var(--border-width) solid var(--line-2);color:var(--ink2);background:0 0}.material-body [data-download-link]:hover{filter:brightness(1.1);text-decoration:none}@media (width<=768px){.material-body [data-download]{grid-template-columns:minmax(0,1fr)}.material-body [data-download]:before{grid-row:auto}.material-body [data-download-name],.material-body [data-download-description],.material-body [data-download-link]{grid-column:1}.material-body [data-download-link]{text-align:center;justify-self:stretch}}.consent{z-index:2;justify-content:center;align-items:center;gap:var(--card-gap);padding:var(--note-pad-y) var(--note-pad-x);border-block-start:var(--border-width) solid var(--line);background:var(--card);color:var(--ink2);font-size:var(--font-card-meta);flex-wrap:wrap;display:flex;position:fixed;inset-block-end:0;inset-inline:0}.consent[hidden]{display:none}.consent-text{max-width:var(--maxw);margin:0;line-height:1.5}.consent-actions{gap:var(--space-s);margin:0;display:flex}.consent-accept,.consent-decline{padding:var(--button-pad-y) var(--button-pad-x);border:var(--border-width) solid var(--acc);border-radius:var(--radius-sm);background:var(--acc);color:var(--tile-ink);font-size:var(--font-card-more);cursor:pointer}.consent-decline{border-color:var(--line-2);color:var(--ink2);background:0 0}@media (width<=768px){.consent{justify-content:stretch}.consent-actions{flex:1 0 100%}.consent-accept,.consent-decline{flex:1}}