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var(--border);margin-left:2px;padding-left:6px}.course-reader-tools__button{width:34px;min-width:34px;height:34px;color:var(--muted);font:inherit;font-size:var(--ds-text-caption);font-weight:var(--ds-weight-semibold);cursor:pointer;background:0 0;border:0;border-radius:6px;justify-content:center;align-items:center;padding:0;line-height:1;text-decoration:none;transition:background-color .18s,color .18s,opacity .18s;display:inline-flex}.course-reader-tools__button:hover:not(:disabled){color:var(--text);background:var(--surface-hover)}.course-reader-tools__button:focus-visible{outline:2px solid color-mix(in srgb,var(--brand)72%,transparent);outline-offset:1px}.course-reader-tools__button:disabled{opacity:.32;cursor:default}.course-reader-tools__button svg{flex:none}.course-font-size{gap:2px}.course-font-size__value{width:auto;min-width:48px;color:var(--text);font-variant-numeric:tabular-nums;padding-inline:6px}.course-font-size__value.is-default{color:var(--muted)}.course-presentation-toggle.is-active{color:var(--ds-white);background:var(--brand)}.course-presentation-toggle.is-active:hover:not(:disabled){color:var(--ds-white);background:var(--accent-dark)}.archive-course-header{grid-area:1/1/auto/-1;padding:4px 316px 0 2px}.archive-course-header__copy{gap:8px;min-width:0;display:grid}.archive-course-tools-dock{z-index:110;grid-area:1/2;place-self:start end;min-width:0;position:sticky;top:12px}.archive-course-breadcrumb{min-width:0;color:var(--muted);font-size:var(--ds-text-button);font-weight:var(--ds-weight-semibold);letter-spacing:.01em;align-items:center;gap:8px;display:inline-flex}.archive-course-breadcrumb__root{color:inherit;align-items:center;gap:5px;text-decoration:none;transition:color 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srgb,var(--text)94%,var(--ds-true-black)6%);padding-top:22px}.archive-course-section-header{border-bottom:1px solid var(--border);gap:6px;margin:0 0 18px;padding-bottom:16px;display:grid}.archive-course-section-header__index{color:var(--muted);font-size:var(--ds-text-button);font-weight:var(--ds-weight-semibold);letter-spacing:.08em;text-transform:uppercase;margin:0}.archive-course-section-header__meta{color:var(--muted);font-size:var(--ds-text-button);font-weight:var(--ds-weight-semibold);letter-spacing:0;margin:2px 0 0}.archive-course-section-header h2{border:0;margin:0;padding:0}.course-section-pager{border-top:1px solid var(--border);grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:34px;padding-top:22px;display:grid}.course-section-pager__item{border:1px solid var(--border);background:var(--surface-muted);min-width:0;color:inherit;border-radius:16px;gap:6px;padding:16px;text-decoration:none;transition:border-color .18s,background-color .18s,transform 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strong{min-width:0;color:var(--text);font-size:var(--ds-text-body-small);font-weight:var(--ds-weight-semibold);text-overflow:ellipsis;white-space:nowrap;line-height:1.35;display:block;overflow:hidden}.course-section-pager__item.is-disabled{color:var(--muted);opacity:.55}.course-section-pager__item.is-disabled:hover{border-color:var(--border);background:var(--surface-muted);transform:none}.archive-course-sections-stack{gap:42px;display:grid}.archive-course-section-block{gap:0;display:grid}.archive-course-section-block+.archive-course-section-block{padding-top:6px}.archive-course-article--all-sections .archive-course-sections-stack{gap:34px}.archive-course-article h2{font-family:var(--body-font);font-size:1.58em;font-weight:var(--ds-weight-semibold);letter-spacing:0;color:var(--text);border-top:0;margin:28px 0 14px;padding-top:0}.archive-course-article h3{font-family:var(--body-font);font-size:1.22em;font-weight:var(--ds-weight-semibold);letter-spacing:0;color:var(--text)}.archive-course-article p,.archive-course-article ul,.archive-course-article ol,.archive-course-article li,.archive-course-article blockquote,.archive-course-article table{letter-spacing:0;word-break:keep-all;color:color-mix(in srgb,var(--text)88%,var(--muted)12%);text-shadow:none;font-size:1em;line-height:1.82}.archive-course-article blockquote{border:1px solid color-mix(in srgb,var(--border-strong)72%,transparent);background:linear-gradient(180deg,color-mix(in srgb,var(--surface-muted)92%,transparent),color-mix(in srgb,var(--panel)96%,transparent));border-radius:20px;margin:20px 0;padding:18px 20px;position:relative;box-shadow:0 10px 28px #0f172a14,inset 0 1px #ffffff8c}.archive-course-article blockquote>:first-child{margin-top:0}.archive-course-article blockquote>:last-child{margin-bottom:0}.archive-course-article blockquote p{margin:0}.archive-course-article blockquote p+p{margin-top:10px}.archive-course-article blockquote strong{color:var(--text);font-weight:var(--ds-weight-semibold)}.archive-course-article strong{font-weight:var(--ds-weight-semibold);color:var(--text);text-shadow:none}.archive-print-page strong{font-weight:var(--ds-weight-semibold);text-shadow:none}.archive-course-article code{font-size:calc(.94rem*var(--archive-course-font-scale,1))}.archive-course-article .code-block code{font-size:inherit}.archive-course-article .code-block__head{font-size:calc(.9rem*var(--archive-course-font-scale,1))}.archive-course-article .code-block pre{font-size:calc(.95rem*var(--archive-course-font-scale,1))}html[data-course-presentation=on] .sheet-sidebar,html[data-course-presentation=on] .course-downloads--inline,html[data-course-presentation=on] .archive-course-meta,html[data-course-presentation=on] .archive-session-controls,html[data-course-presentation=on] .course-section-pager{display:none}html[data-course-presentation=on] .archive-course-layout{grid-template-columns:minmax(0,1fr)}html[data-course-presentation=on] .archive-course-page{gap:14px}html[data-course-presentation=on] .course-back-to-top{display:none}html[data-course-presentation=on] .archive-course-header{padding-top:0}html[data-course-presentation=on] .archive-course-header h1{font-size:clamp(2.2rem,3.5vw,3.6rem);line-height:1.04}html[data-course-presentation=on] .archive-course-article{font-size:calc(1.14rem*var(--archive-course-font-scale,1));padding-top:14px}html[data-course-presentation=on] .archive-course-section-header{gap:10px;margin-bottom:24px;padding-bottom:20px}html[data-course-presentation=on] .archive-course-sections-stack{gap:56px}html[data-course-presentation=on] .archive-course-article--all-sections .archive-course-sections-stack{gap:42px}html[data-course-presentation=on] .archive-course-section-header__index{font-size:var(--ds-text-body-small)}html[data-course-presentation=on] .archive-course-section-header h2{font-size:clamp(2rem,3vw,3rem);line-height:1.08}html[data-course-presentation=on] .archive-course-article h2{font-size:2em}html[data-course-presentation=on] .archive-course-article h3{font-size:1.38em}html[data-course-presentation=on] .archive-course-article p,html[data-course-presentation=on] .archive-course-article ul,html[data-course-presentation=on] .archive-course-article ol,html[data-course-presentation=on] .archive-course-article li,html[data-course-presentation=on] .archive-course-article blockquote,html[data-course-presentation=on] .archive-course-article table{line-height:1.9}html[data-course-presentation=on] .archive-course-article .code-block pre{font-size:calc(1rem*var(--archive-course-font-scale,1))}html[data-course-presentation=on] .archive-course-article blockquote{border-radius:22px;padding:20px 22px}
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var(--border-strong);color:var(--muted);background:var(--surface-muted);border-radius:14px;margin:0;padding:14px}.archive-library__list{gap:8px;display:grid}.archive-library__groups,.archive-library-group{display:grid}.archive-library__groups{gap:28px}.archive-library-group{gap:10px}.archive-library-group__header{border-bottom:1px solid var(--border-strong);justify-content:space-between;align-items:baseline;gap:12px;padding-bottom:10px;display:flex}.archive-library-group__header h2{font-size:var(--ds-text-body-large);margin:0}.archive-library-group__header span{color:var(--muted);font-size:var(--ds-text-button)}.archive-library-row{border:1px solid var(--border);background:var(--surface-elevated);min-height:62px;box-shadow:var(--shadow);border-radius:14px;justify-content:space-between;align-items:center;gap:14px;padding:12px 14px;display:flex}.archive-library-row__main{gap:3px;min-width:0;display:grid}.archive-library-row h3{min-width:0;color:var(--text);font-size:var(--ds-text-body-small);letter-spacing:0;text-overflow:ellipsis;white-space:nowrap;margin:0;line-height:1.35;overflow:hidden}.archive-library-row p{color:var(--muted);font-size:var(--ds-text-button);text-overflow:ellipsis;white-space:nowrap;margin:0;overflow:hidden}.archive-library-row__actions{flex:none;justify-content:flex-end;display:flex}.archive-catalog-filter{gap:8px;display:grid}.archive-catalog-filter .eyebrow{color:var(--muted);margin:0}.archive-catalog-filter__chips{flex-wrap:wrap;gap:10px;display:flex}.archive-catalog-chip{border:1px solid var(--border);background:var(--surface-muted);min-height:34px;color:var(--muted);font:inherit;font-size:var(--ds-text-button);font-weight:var(--ds-weight-semibold);cursor:pointer;border-radius:999px;align-items:center;gap:10px;padding:0 12px;transition:background-color .18s,color .18s,border-color .18s,transform .18s;display:inline-flex}.archive-catalog-chip:hover{color:var(--text);border-color:var(--border-strong);background:var(--surface-elevated)}.archive-catalog-chip.is-active{color:var(--text);border-color:color-mix(in srgb,var(--accent)20%,var(--border)80%);background:color-mix(in srgb,var(--accent)14%,var(--panel-strong)86%)}.archive-catalog__groups{gap:16px;display:grid}.archive-catalog-empty{border:1px dashed var(--border-strong);background:var(--surface-muted);border-radius:18px;gap:10px;padding:20px 22px;display:grid}.archive-catalog-empty h2,.archive-catalog-empty p{margin:0}.archive-catalog-empty p{color:var(--muted)}.archive-catalog-group-card{border:1px solid var(--border);background:var(--surface-elevated);box-shadow:var(--shadow);border-radius:18px;gap:12px;padding:16px 18px;display:grid}.archive-catalog-group-card__head{justify-content:space-between;align-items:flex-start;gap:16px;display:flex}.archive-catalog-group-card__copy{gap:4px;display:grid}.archive-catalog-group-card__description{max-width:62ch;color:var(--muted);font-size:var(--ds-text-button);margin:0;line-height:1.55}.archive-catalog-group-card__copy h2{font-family:var(--body-font);font-size:var(--ds-text-body-small);font-weight:var(--ds-weight-semibold);margin:0;line-height:1.2}.archive-catalog-group-card__list{gap:18px;display:grid}.archive-subcategory-section{box-shadow:none;background:0 0;border:0;border-radius:0;gap:10px;padding:0;display:grid}.archive-subcategory-section+.archive-subcategory-section{padding-top:18px}.archive-subcategory-section__head,.archive-subcategory-section__copy{display:block}.archive-subcategory-section__title{align-items:center;gap:8px;max-width:100%;display:inline-flex}.archive-subcategory-section__copy h3{font-size:var(--ds-text-button);font-weight:var(--ds-weight-semibold);color:var(--muted);margin:0;line-height:1.3}.archive-subcategory-tooltip{flex:none;align-items:center;display:inline-flex;position:relative}.archive-subcategory-tooltip__trigger{width:16px;min-height:16px;color:color-mix(in srgb,var(--muted)82%,var(--text)18%);font-family:var(--body-font);font-size:var(--ds-text-caption);font-weight:var(--ds-weight-semibold);cursor:help;opacity:.78;background:0 0;border:0;border-radius:999px;justify-content:center;align-items:center;padding:0;line-height:1;transition:opacity .18s,color .18s,background-color .18s;display:inline-flex}.archive-subcategory-tooltip__trigger:hover,.archive-subcategory-tooltip__trigger:focus-visible{color:var(--text);background:color-mix(in srgb,var(--surface-muted)78%,transparent);opacity:1;outline:none}.archive-subcategory-tooltip__panel{z-index:20;border:1px solid var(--border);background:color-mix(in srgb,var(--surface-elevated)96%,black 4%);width:min(440px,100vw - 48px);box-shadow:var(--shadow);color:var(--text);font-size:var(--ds-text-button);white-space:pre-line;opacity:0;pointer-events:none;border-radius:16px;padding:14px 16px;line-height:1.6;transition:opacity .18s,transform .18s;display:block;position:absolute;top:calc(100% + 10px);left:0;transform:translateY(6px)}.archive-subcategory-tooltip:hover .archive-subcategory-tooltip__panel,.archive-subcategory-tooltip:focus-within .archive-subcategory-tooltip__panel{opacity:1;pointer-events:auto;transform:translateY(0)}.archive-subcategory-section__list{gap:8px;display:grid}.archive-course-row{border:1px solid var(--border);background:var(--panel);border-radius:14px;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:10px;padding:12px 14px;transition:transform .18s,border-color .18s,background-color .18s,box-shadow .18s;display:grid}.archive-course-row:hover{border-color:var(--border-strong);background:var(--surface-elevated)}.archive-course-row__main{grid-template-columns:auto minmax(0,1fr);align-items:center;gap:10px;min-width:0;display:grid}.archive-course-row__index{background:color-mix(in srgb,var(--accent)16%,var(--panel-strong)84%);width:34px;min-height:34px;color:var(--text);font-size:var(--ds-text-caption);font-weight:var(--ds-weight-semibold);font-variant-numeric:tabular-nums;border-radius:10px;justify-content:center;align-items:center;display:inline-flex}.archive-course-row__copy{align-content:center;gap:0;min-width:0;display:grid}.archive-course-row__copy h3{font-size:var(--ds-text-button);margin:0;line-height:1.35}.archive-course-row__actions{flex-wrap:wrap;justify-content:flex-end;align-items:center;gap:10px;display:flex}