.course-reader{--reader-bg:#fff;--reader-ink:#263247;--reader-muted:#657083;--reader-line:#dce1e7;--reader-panel:#f6f8fa;--reader-accent:#856325;background:var(--reader-bg);min-height:100dvh;color:var(--reader-ink);padding-bottom:calc(92px + env(safe-area-inset-bottom));--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;overflow-wrap:break-word;font:16px/1.6 Arial,sans-serif}.course-reader[data-reader-theme=tan]{--reader-bg:#f6ecd8;--reader-ink:#403326;--reader-muted:#75644e;--reader-line:#d9c9ab;--reader-panel:#eee0c6;--reader-accent:#77551c}.course-reader[data-reader-theme=dark]{--reader-bg:#121b2a;--reader-ink:#e2e6ef;--reader-muted:#acb7c8;--reader-line:#3b4659;--reader-panel:#1c293d;--reader-accent:#e1bd76;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}.course-reader *{box-sizing:border-box}.course-reader a{color:inherit}.course-reader button,.course-reader select{color:var(--reader-ink);background:var(--reader-bg);border:1px solid var(--reader-line);cursor:pointer;border-radius:6px;min-height:44px;padding:10px 12px;font:600 15px/1.45 Arial,sans-serif}.course-reader button:disabled{opacity:.35;cursor:default}.course-reader button:hover:not(:disabled),.course-reader select:hover{background:var(--reader-panel)}.course-reader :focus-visible{outline:3px solid var(--reader-accent);outline-offset:4px}.reader-skip{z-index:100;background:var(--reader-bg);padding:15px;position:fixed;top:-200px;left:20px}.reader-skip:focus{top:10px}.reader-header{z-index:30;background:var(--reader-bg);border-bottom:1px solid var(--reader-line);position:sticky;top:0}.reader-toolbar{justify-content:space-between;align-items:center;gap:15px;max-width:1100px;min-height:65px;margin:auto;padding:9px 25px;display:flex}.reader-back,.reader-tools a{align-items:center;gap:7px;min-height:44px;font-size:14px;text-decoration:none;display:inline-flex}.reader-brand{letter-spacing:.08em;font-size:19px;font-weight:800;text-decoration:none}.reader-brand span{color:var(--reader-muted);margin-left:5px;font-size:10px}.reader-tools{align-items:center;gap:20px;display:flex}.course-reader .reader-tools button{min-width:48px;padding:5px 12px}.reader-aa{font:22px Georgia,serif}.reader-progress{background:var(--reader-line);height:2px}.reader-progress>span{background:var(--reader-accent);height:100%;display:block}.reader-preferences{background:var(--reader-bg);border:1px solid var(--reader-line);border-top:3px solid var(--reader-accent);border-radius:8px;width:340px;max-width:calc(100vw - 32px);padding:20px;position:absolute;top:calc(100% + 10px);right:max(16px,50vw - 525px);box-shadow:0 12px 45px #0003}.reader-setting-title{justify-content:space-between;align-items:center;gap:10px;margin-bottom:8px;display:flex}.reader-setting-title strong{font-size:15px}.course-reader .reader-setting-title button{background:0 0;border:0;padding:5px}.reader-setting-row{border-top:1px solid var(--reader-line);justify-content:space-between;align-items:center;gap:10px;padding-top:16px;display:flex}.reader-control-group{align-items:center;gap:5px;display:flex}.reader-control-group output{text-align:center;min-width:40px}.course-reader fieldset{border:0;margin:20px 0 0;padding:0}.course-reader legend{margin-bottom:9px;font-size:14px}.reader-theme-options,.reader-font-options{gap:7px;display:flex}.reader-theme-options button,.reader-font-options button{flex:1}.course-reader button[aria-pressed=true]{outline:2px solid var(--reader-accent);outline-offset:1px}.course-reader [data-swatch=white]{color:#263247;background:#fff}.course-reader [data-swatch=tan]{color:#403326;background:#f6ecd8}.course-reader [data-swatch=dark]{color:#e2e6ef;background:#121b2a}.reader-preferences>p{color:var(--reader-muted);margin:18px 0 0;font-size:12px!important}.reader-font-options button:first-child{font-family:Georgia,serif}.reader-book-heading,.reader-chapter-picker,.reader-resume,.reader-content,.reader-attribution{width:min(100% - 48px,760px);margin-inline:auto}.reader-book-heading{padding:40px 0 27px}.reader-book-heading>p,.reader-chapter-label{letter-spacing:.12em;color:var(--reader-accent);margin:0 0 12px;font:700 12px/1.6 Arial,sans-serif}.reader-book-heading h1{letter-spacing:-.02em;color:var(--reader-ink);margin:0 0 18px;font:600 29px/1.3 Georgia,serif}.reader-book-actions{flex-wrap:wrap;align-items:center;gap:22px;display:flex}.reader-book-actions a{min-height:44px;color:var(--reader-accent);align-items:center;gap:8px;font-size:14px;text-decoration:none;display:flex}.course-reader .reader-book-actions select{background:var(--reader-panel);padding-right:25px;font-size:14px}.reader-chapter-picker{border-block:1px solid var(--reader-line);color:var(--reader-accent);align-items:center;gap:12px;padding:13px 0;display:flex}.course-reader .reader-chapter-picker select{text-overflow:ellipsis;background:0 0;border:0;flex:1;width:100%;min-width:0;padding:10px 23px 10px 0;font-size:15px}.reader-chapter-picker>span{white-space:nowrap;color:var(--reader-muted);font-size:12px}.reader-chapter-picker>svg{flex-shrink:0}.reader-resume{background:var(--reader-panel);border:1px solid var(--reader-line);border-radius:6px;flex-wrap:wrap;align-items:center;gap:10px;margin-top:20px;padding:14px;font-size:13px;display:flex}.course-reader .reader-resume button{font-size:13px}.course-reader .reader-resume-dismiss{background:0 0;border:0;margin-left:auto;padding:8px}.reader-content{outline:none;padding:42px 0 5px}.reader-content article{font:var(--reader-size)/1.85 var(--reader-font);letter-spacing:.005em}.reader-content article h2{font:600 1.7em/1.3 var(--reader-font);letter-spacing:-.025em;color:var(--reader-ink);margin:10px 0 35px}.reader-content article h3{font:700 1.03em/1.5 var(--reader-font);color:var(--reader-ink);text-transform:none;margin:1.7em 0 .75em}.reader-content article p{font:inherit;line-height:inherit;color:var(--reader-ink);margin:0 0 1.05em}.reader-content article .reader-chapter-label{color:var(--reader-accent);margin:0 0 10px;font:700 12px/1.6 Arial,sans-serif}.reader-content article blockquote{font:inherit;color:var(--reader-ink);border-left:3px solid var(--reader-accent);margin:1.2em 0 1.4em;padding:0 0 0 1.1em;font-style:italic}.reader-content article .reader-list-item{gap:.65em;margin:0 0 .55em;display:flex}.reader-list-item>span:first-child{color:var(--reader-accent)}.reader-list-item>span:last-child{min-width:0}.reader-source-page{text-align:right;border-top:1px solid var(--reader-line);margin:1.6em 0 1em;padding-top:12px;font:11px/1.6 Arial,sans-serif;text-decoration:none;display:block;color:var(--reader-muted)!important}.reader-content article>div:first-of-type .reader-source-page{margin-top:0}.reader-columns{border:1px solid var(--reader-line);background:var(--reader-panel);border-radius:6px;grid-template-columns:repeat(auto-fit,minmax(min(100%,220px),1fr));gap:18px;margin:1.3em 0;padding:18px;display:grid}.reader-columns p{font-size:.9em!important}.reader-chapter-end{text-align:center;border-top:1px solid var(--reader-line);margin:55px 0 10px;padding:30px 0}.reader-chapter-end>span{color:var(--reader-accent)}.reader-content article .reader-chapter-end p{color:var(--reader-muted);margin:9px 0 20px;font:14px/1.7 Arial,sans-serif}.reader-chapter-end button,.reader-chapter-end a{color:var(--reader-accent);border:1px solid var(--reader-line);border-radius:6px;align-items:center;gap:10px;padding:12px 18px;font:600 16px/1.5 Arial,sans-serif;text-decoration:none;display:inline-flex}.reader-attribution{text-align:center;color:var(--reader-muted);padding:25px 0 15px;font:12px/1.8 Arial,sans-serif}.reader-attribution p{margin:0 0 10px}.reader-attribution a{text-underline-offset:4px;min-height:44px;color:var(--reader-accent);align-items:center;display:inline-flex}.reader-bottom{padding:10px max(16px,calc((100% - 760px)/2)) calc(10px + env(safe-area-inset-bottom));background:var(--reader-bg);border-top:1px solid var(--reader-line);z-index:20;justify-content:space-between;align-items:center;gap:8px;display:flex;position:fixed;bottom:0;left:0;right:0}.reader-bottom button{white-space:nowrap;border:0;justify-content:center;align-items:center;gap:9px;display:flex}.reader-of{color:var(--reader-muted)}.reader-error{padding:30px 0}.reader-error a{margin:15px;text-decoration:underline;display:inline-block}@media (max-width:600px){.reader-toolbar{gap:8px;min-height:60px;padding:7px 16px}.reader-brand{font-size:17px}.reader-brand span{display:none}.reader-tools{gap:12px}.reader-back{font-size:14px}.reader-book-heading,.reader-chapter-picker,.reader-resume,.reader-content,.reader-attribution{width:calc(100% - 40px)}.reader-book-heading{padding-top:28px;padding-bottom:22px}.reader-book-heading h1{font-size:25px}.reader-book-actions{gap:16px}.reader-chapter-picker{gap:8px}.reader-chapter-picker>span{display:none}.reader-content{padding-top:32px}.reader-content article h2{margin-bottom:28px;font-size:1.45em}.reader-content article{line-height:1.8}.reader-bottom{gap:0;padding-inline:8px}.course-reader .reader-bottom button{gap:5px;padding:10px 8px;font-size:13px}.reader-of{display:none}.reader-columns{padding:14px}.reader-preferences{top:calc(100% + 5px)}.course-reader .reader-book-actions select,.course-reader .reader-chapter-picker select{font-size:16px}}@media print{.reader-header,.reader-bottom,.reader-book-actions,.reader-chapter-picker,.reader-resume,.reader-source-page,.reader-chapter-end button,.reader-chapter-end a{display:none}.course-reader{padding:0;--reader-bg:#fff!important;--reader-ink:#000!important;--reader-size:12pt!important}.reader-content{width:100%;padding:0}}.reader-answer-space{border-bottom:1px solid var(--reader-line);height:1.4em;margin:0 0 .3em}.reader-table-wrap{border:1px solid var(--reader-line);overscroll-behavior-x:contain;border-radius:6px;max-width:100%;margin:1.3em 0;overflow:auto}.course-reader .reader-table-wrap table{border-collapse:collapse;font:inherit;width:100%;min-width:480px}.course-reader .reader-table-wrap td{border:1px solid var(--reader-line);vertical-align:top;color:var(--reader-ink);min-width:130px;padding:.6em;font-size:.85em}.reader-table-wrap tr:nth-child(2n){background:var(--reader-panel)}.reader-content article .reader-figure{margin:1.6em 0;padding:0}.reader-figure>a{border:1px solid var(--reader-line);background:#fff;border-radius:6px;padding:10px;display:block}.reader-figure img{width:100%;height:auto;display:block}.reader-figure figcaption{color:var(--reader-muted);margin:10px 0;font:12px/1.7 Arial,sans-serif}.reader-figure details{border:1px solid var(--reader-line);border-radius:6px;padding:10px 14px}.reader-figure summary{cursor:pointer;min-height:30px;font:600 14px/1.7 Arial,sans-serif}.reader-content article .reader-figure details p{margin:15px 0 5px;font-size:.9em}.course-reader .reader-attribution{background:var(--reader-bg);color:var(--reader-muted)}.course-reader .reader-attribution a{color:var(--reader-accent)}