.cf-interactive,.cf-image-figure{margin:1.8rem 0;max-width:100%;min-width:0}.cf-interactive{border-block:1px solid var(--line);padding:1.15rem 0 1rem;font-family:var(--font-sans, Arial, sans-serif);color:var(--ink);font-size:.88rem;line-height:1.5}.cf-heading{display:flex;align-items:center;justify-content:space-between;gap:1rem;margin-bottom:1.1rem;font-family:var(--font-serif, Georgia, serif);font-size:1.13rem;font-weight:600}.cf-interactive button,.cf-interactive input,.cf-image-figure button{font:inherit}.cf-interactive button,.cf-image-figure button{color:inherit;cursor:pointer}.cf-interactive button:focus-visible,.cf-image-figure button:focus-visible,.cf-interactive input:focus-visible,.cf-viewer-viewport:focus-visible{outline:2px solid var(--accent);outline-offset:3px}.cf-interactive button:disabled,.cf-image-figure button:disabled{opacity:.35;cursor:default}.cf-reset{flex:none;border:0;background:none;color:var(--accent)!important;font-family:var(--font-sans, Arial, sans-serif)!important;font-size:.8rem!important;min-height:44px;padding:0 .35rem;font-weight:400}.cf-reset span{font-size:1.1rem;margin-right:.2rem}.cf-control-row{display:flex;align-items:center;gap:.7rem;margin:.75rem 0 1.15rem;flex-wrap:wrap}.cf-control-row label{white-space:nowrap;color:var(--muted);font-size:.78rem}.cf-control-row input[type=range]{accent-color:var(--accent);flex:1;min-width:100px;min-height:44px;max-width:250px;cursor:pointer}.cf-control-row output{font-variant-numeric:tabular-nums;min-width:4rem;font-size:.82rem}.cf-fusion-lists{display:grid;grid-template-columns:1fr 1fr 1.25fr;gap:1.5rem}.cf-rank-list{min-width:0;border-left:1px solid var(--line);padding-left:.8rem}.cf-rank-list h4{font-family:var(--font-serif, Georgia, serif);font-size:1.15rem;margin:0 0 .55rem;line-height:1.3}.cf-rank-list ol{list-style:none;margin:0;padding:0}.cf-rank-list li{display:flex;align-items:center;gap:.35rem;border-top:1px solid var(--line);min-height:51px;padding:.15rem 0;margin:0}.cf-rank{width:1rem;font-size:.77rem;font-variant-numeric:tabular-nums;color:var(--muted)}.cf-rank-list button{border:1px solid var(--line);border-radius:3px;background:var(--surface);min-width:44px;min-height:44px;font-family:var(--font-serif, Georgia, serif);font-size:1.1rem}.cf-rank-list button[aria-pressed=true]{background:var(--accent-soft);border-color:var(--accent);color:var(--accent)}.cf-credit{font-size:.76rem;white-space:nowrap;color:var(--accent);margin-left:auto;font-variant-numeric:tabular-nums}.cf-score{margin-left:auto;font-size:.8rem;font-variant-numeric:tabular-nums;padding-right:.3rem}.cf-selected{background:var(--accent-soft)}.cf-calculation{display:flex;justify-content:space-between;align-items:baseline;gap:.6rem 1.1rem;flex-wrap:wrap;background:var(--accent-soft);border-left:2px solid var(--accent);padding:.8rem 1rem;margin-top:1.15rem;line-height:1.5}.cf-calculation strong{font-weight:600;color:var(--accent)}.cf-calculation span{font-size:.84rem;font-variant-numeric:tabular-nums}.cf-note{font-family:var(--font-serif, Georgia, serif);font-size:.91rem!important;color:var(--muted);margin:.8rem 0 0!important;line-height:1.5!important}.cf-segment{display:flex;gap:.2rem;flex-wrap:wrap;border-bottom:1px solid var(--line);margin-bottom:1rem}.cf-segment button{background:transparent;border:0;border-bottom:2px solid transparent;min-height:44px;padding:.6rem .85rem;color:var(--muted);font-size:.83rem}.cf-segment button[aria-pressed=true]{color:var(--accent);border-bottom-color:var(--accent);background:var(--accent-soft)}.cf-similarity-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);align-items:center;gap:1.1rem}.cf-vector-plot{display:block;width:100%;height:auto;max-height:345px;overflow:visible}.cf-grid-lines line{stroke:var(--line);stroke-width:.55;stroke-dasharray:2 4}.cf-grid-lines text{fill:var(--muted);font-size:11px;font-family:var(--font-sans, Arial, sans-serif)}.cf-axes{stroke:var(--muted);stroke-width:1;fill:none}.cf-vector{stroke-width:2.5}.cf-vector text{stroke:none;font-size:17px;font-weight:600;font-family:var(--font-serif, Georgia, serif)}.cf-vector-a{stroke:var(--accent);fill:var(--accent)}.cf-vector-b{stroke:var(--danger, #a04e44);fill:var(--danger, #a04e44)}.cf-vector-query{stroke:var(--ink);fill:var(--ink);stroke-dasharray:4 3;stroke-width:1.8}.cf-vector-data{min-width:0}.cf-interactive table{border-collapse:collapse;width:100%;font:inherit;margin:0;background:none}.cf-interactive table th,.cf-interactive table td{border:0;border-bottom:1px solid var(--line);padding:.65rem .5rem;font-weight:400;font-size:.81rem;white-space:nowrap;color:var(--ink);background:transparent;text-align:right}.cf-interactive table th:first-child,.cf-interactive table td:first-child{text-align:left}.cf-interactive table th.cf-selected,.cf-interactive table td.cf-selected{background:var(--accent-soft)}.cf-interactive table caption{text-align:left;font-weight:600;color:var(--muted);font-size:.75rem;margin-bottom:.4rem}.cf-vector-formula{font-family:var(--font-serif, Georgia, serif);font-size:.95rem;margin:1.1rem 0}.cf-checkbox{display:flex;align-items:center;gap:.5rem;min-height:44px;cursor:pointer;font-size:.8rem;line-height:1.4}.cf-checkbox input{accent-color:var(--accent);width:17px;height:17px;flex-shrink:0;cursor:pointer}.cf-column-controls{display:flex;align-items:center;gap:.65rem;flex-wrap:wrap;margin-bottom:.65rem}.cf-column-controls>span{font-size:.75rem;color:var(--muted);margin-right:auto}.cf-column-controls .cf-checkbox{min-width:40px}.cf-table-scroll{overflow:auto;max-width:100%}.cf-maxsim-table th button{min-height:44px;padding:.35rem .4rem;background:transparent;border:1px solid transparent;border-radius:2px;text-align:left;font-size:.83rem}.cf-maxsim-table th button[aria-pressed=true]{border-color:var(--accent);color:var(--accent)}.cf-maxsim-table td.cf-max-cell{background:var(--accent-soft);color:var(--accent);font-weight:700;box-shadow:inset 0 -2px var(--accent)}.cf-maxsim-table td.cf-row-max{font-weight:600;border-left:1px solid var(--line)}.cf-interactive .cf-omitted{opacity:.32;text-decoration:line-through}.cf-token-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:.5rem;margin-top:1.1rem}.cf-token{border:1px solid var(--line);padding:.9rem .3rem;text-align:center;min-width:0}.cf-token strong{display:block;font-size:.79rem;font-weight:600}.cf-token span{display:block;font-size:.7rem;color:var(--muted);margin-top:.3rem}.cf-pooled-token{border-color:var(--accent);background:var(--accent-soft)}.cf-context-bracket{border-top:2px solid var(--accent);margin:1rem 0 .25rem 50%;text-align:center;color:var(--accent);font-size:.75rem;padding:.4rem 0;position:relative}.cf-context-bracket:before,.cf-context-bracket:after{content:"";position:absolute;top:-7px;height:7px;width:2px;background:var(--accent)}.cf-context-bracket:before{left:0}.cf-context-bracket:after{right:0}.cf-context-bracket.cf-wide{margin-left:0}.cf-pooling-flow{max-width:340px;margin:1.5rem auto;text-align:center}.cf-pooling-label{display:block;font-size:.75rem;color:var(--muted);margin-bottom:.8rem}.cf-states{display:flex;align-items:center;justify-content:center;gap:1rem;font-family:var(--font-mono, monospace);font-size:.92rem}.cf-states span:nth-child(odd){background:var(--accent-soft);border:1px solid var(--line);padding:.5rem 1rem}.cf-pooling-arrow{font-size:.72rem;color:var(--muted);margin:.5rem 0}.cf-mean{font-family:var(--font-mono, monospace);font-size:1.1rem;font-weight:400}.cf-normalize{width:fit-content;margin:0 auto}.cf-image-trigger{display:block;width:100%;padding:0;position:relative;background:transparent;border:1px solid var(--line);border-radius:2px;text-align:initial;overflow:hidden}.cf-image-trigger img{display:block;width:100%;height:auto;margin:0}.cf-expand-label{display:flex;justify-content:flex-end;align-items:center;gap:.4rem;min-height:44px;padding:.45rem .8rem;border-top:1px solid var(--line);background:var(--surface);font-family:var(--font-sans, Arial, sans-serif);color:var(--accent);font-size:.76rem}.cf-image-error{display:block;padding:2rem;color:var(--muted)}.cf-dialog{padding:0;border:1px solid var(--line);border-radius:5px;background:var(--paper);color:var(--ink);width:min(1180px,96vw);max-width:96vw;max-height:94dvh;box-shadow:0 15px 70px #0005;overflow:hidden}.cf-dialog::backdrop{background:#111820b8;-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px)}.cf-dialog-inner{display:flex;flex-direction:column;max-height:92dvh}.cf-viewer-toolbar{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:.55rem .85rem;border-bottom:1px solid var(--line);flex-shrink:0;background:var(--paper)}.cf-viewer-toolbar h2{font-family:var(--font-serif, Georgia, serif);font-size:1.1rem!important;margin:0!important;font-weight:500}.cf-viewer-toolbar button{border:1px solid var(--line);background:var(--surface);color:var(--ink);min-height:44px;min-width:44px;font-family:var(--font-sans, Arial, sans-serif);font-size:.83rem;padding:.35rem .7rem}.cf-zoom-controls{display:flex;gap:4px;margin-left:auto}.cf-zoom-controls button:nth-child(3){min-width:65px;font-variant-numeric:tabular-nums}.cf-viewer-toolbar .cf-viewer-close{border:0;background:transparent}.cf-viewer-close span{font-size:1.25rem;margin-left:.4rem;vertical-align:middle}.cf-viewer-viewport{overflow:auto;max-width:100%;min-height:0;overscroll-behavior:contain;padding:1rem;touch-action:pan-x pan-y pinch-zoom;background:var(--surface)}.cf-viewer-viewport img{display:block;max-width:none!important;height:auto;margin:0 auto!important;flex:none}.cf-viewer-caption{font-family:var(--font-sans, Arial, sans-serif);font-size:.78rem!important;line-height:1.45!important;margin:0!important;padding:.8rem 1rem;flex-shrink:0;border-top:1px solid var(--line);max-height:20dvh;overflow:auto}.cf-viewer-caption span{color:var(--muted);display:block;margin-top:.3rem;font-size:.71rem}.cf-sr-only{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}@media(max-width:650px){.cf-fusion-lists{grid-template-columns:1fr 1fr;gap:1rem}.cf-fused{grid-column:1/-1;border-left:0;padding-left:0;margin-top:.5rem}.cf-fused li{gap:.8rem}.cf-fused .cf-score{font-size:.9rem}.cf-credit{font-size:.8rem}.cf-similarity-layout{grid-template-columns:1fr}.cf-vector-plot{max-width:290px;margin:0 auto}.cf-vector-data table{font-size:.9rem}.cf-heading{font-size:1.05rem}.cf-calculation{padding:.7rem .8rem}.cf-interactive{font-size:.84rem}.cf-interactive table th,.cf-interactive table td{padding:.4rem .26rem;font-size:.76rem}.cf-maxsim-table th button{font-size:.74rem;padding:.25rem .15rem}.cf-column-controls{gap:.5rem}.cf-column-controls>span{flex-basis:100%}.cf-token-strip{gap:.3rem}.cf-token strong{font-size:.7rem}.cf-token span{font-size:.65rem}.cf-context-bracket{font-size:.7rem}.cf-viewer-toolbar{gap:.3rem;padding:.4rem}.cf-viewer-toolbar h2{font-size:.95rem!important}.cf-viewer-toolbar button{padding:.3rem}.cf-viewer-close span{margin:0}.cf-dialog{width:98vw;max-width:98vw;max-height:96dvh}.cf-dialog-inner{max-height:94dvh}.cf-viewer-viewport{padding:.4rem}.cf-viewer-caption{font-size:.74rem!important}.cf-segment button{font-size:.76rem;padding:.5rem .55rem}}@media(prefers-reduced-motion:no-preference){.cf-rank-list button,.cf-segment button,.cf-token{transition:background-color .15s,border-color .15s,opacity .15s}}.course-labs{margin-block:3.5rem}.course-exercise{padding-block:2.5rem 1rem;border-top:1px solid var(--line);scroll-margin-top:5.5rem}.lab-heading{margin-bottom:1.5rem}.lab-kicker{color:var(--accent);font-family:var(--font-ui, sans-serif);font-size:.72rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase}.lab-heading h3{margin:.55rem 0 0;font-size:clamp(1.5rem,3vw,2rem);line-height:1.2}.lab-source{margin-bottom:2rem}.lab-source>:first-child{margin-top:0}.lab-workspace{border-block:1px solid var(--line);background:var(--surface);padding:1.5rem;margin-block:2rem 1rem}.lab-workspace-heading{display:flex;align-items:baseline;flex-wrap:wrap;justify-content:space-between;gap:.5rem;margin-bottom:1.25rem}.lab-workspace-heading h4{font-size:1.2rem;margin:0}.lab-saved{color:var(--muted);font:.72rem/1.4 var(--font-ui, sans-serif)}.lab-note,.lab-input-note,.lab-self-review{color:var(--muted);font-size:.9rem;line-height:1.5}.lab-input-note{margin-block:0 1.5rem}.lab-fields{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1.15rem 1.4rem}.lab-field{min-width:0}.lab-field-text,.lab-field-set,.lab-field-order,.lab-field-chunks{grid-column:1 / -1}.lab-field label,.lab-label{display:block;margin-bottom:.5rem;color:var(--ink);font:600 .85rem/1.45 var(--font-ui, sans-serif)}.lab-field input,.lab-field textarea,.lab-field select{box-sizing:border-box;width:100%;min-height:44px;color:var(--ink);background:var(--paper);border:1px solid var(--line);border-radius:3px;padding:.65rem .75rem;font:1rem/1.5 var(--font-ui, sans-serif)}.lab-field textarea{resize:vertical;line-height:1.65}.lab-field select{padding-right:1.8rem}.lab-field input[aria-invalid=true],.lab-field select[aria-invalid=true]{border-color:var(--danger)}.course-labs button:focus-visible,.course-labs input:focus-visible,.course-labs select:focus-visible,.course-labs textarea:focus-visible,.course-labs summary:focus-visible{outline:2px solid var(--accent);outline-offset:3px}.lab-options{display:flex;flex-wrap:wrap;gap:.5rem}.lab-options .lab-option{display:inline-flex;gap:.6rem;align-items:center;min-height:44px;padding:.6rem .8rem;border:1px solid var(--line);border-radius:3px;background:var(--paper);color:var(--ink);cursor:pointer;font:.88rem/1.4 var(--font-ui, sans-serif);text-align:left}.lab-options .lab-option:hover{border-color:var(--accent)}.lab-options .lab-option[aria-pressed=true]{background:var(--accent-soft);border-color:var(--accent)}.lab-option small{display:block;color:var(--muted);font-size:.73rem;margin-top:.2rem}.lab-checkbox{flex:0 0 1rem;width:1rem;height:1rem;border:1px solid currentColor;border-radius:2px;display:inline-flex;align-items:center;justify-content:center;line-height:1;color:var(--accent)}.lab-total,.lab-cost{color:var(--muted);font:.8rem/1.5 var(--font-ui, sans-serif);font-variant-numeric:tabular-nums}.lab-total{margin:.65rem 0 0}.lab-order,.lab-chunks{padding:0;list-style:none;margin:1rem 0 0}.lab-order li,.lab-chunks li{display:flex;align-items:center;justify-content:space-between;gap:.75rem;padding:.45rem 0;border-bottom:1px solid var(--line);font:.88rem/1.45 var(--font-ui, sans-serif)}.lab-order li>span,.lab-chunks li>span{min-width:0}.lab-order b{color:var(--muted);margin-right:.3rem}.lab-order-actions{display:flex;flex:0 0 auto;gap:.2rem}.lab-order button,.lab-chunks button,.lab-chunk-toolbar button,.lab-actions button{min-width:44px;min-height:44px;background:var(--paper);border:1px solid var(--line);color:var(--ink);border-radius:3px;padding:.5rem .75rem;font:.85rem/1.4 var(--font-ui, sans-serif);cursor:pointer}.lab-order button{padding:.5rem}.course-labs button:disabled{opacity:.4;cursor:default}.lab-chunk-toolbar{display:flex;justify-content:space-between;align-items:center;gap:.5rem;margin-top:.75rem;font:.8rem/1.4 var(--font-ui, sans-serif);color:var(--muted)}.lab-chunk-builder .lab-option{flex-direction:column;gap:.15rem;min-width:62px}.lab-chunk-builder .lab-option>span{font-size:.73rem;color:var(--muted)}.lab-chunks .lab-cost{margin-left:.5rem}.lab-actions{display:flex;flex-wrap:wrap;gap:.5rem;margin-top:1.5rem}.lab-actions .lab-check{background:var(--accent);color:var(--paper);border-color:var(--accent)}.lab-actions .lab-reset-confirm{color:var(--danger);border-color:var(--danger)}.lab-feedback{border-left:2px solid var(--line);padding:.1rem 0 .1rem 1rem;margin-top:1.3rem;font-size:.9rem;line-height:1.55}.lab-feedback.has-errors{border-color:var(--danger)}.lab-feedback.is-correct{border-color:var(--success)}.lab-feedback p{margin:.6rem 0}.lab-feedback ul{padding-left:1.1rem}.lab-feedback li{margin:.6rem 0}.lab-feedback strong{font-weight:600}.lab-solution{margin-top:.5rem}.lab-solution>summary{cursor:pointer;padding-block:1rem;min-height:44px;box-sizing:border-box;color:var(--accent);font:600 .88rem/1.5 var(--font-ui, sans-serif)}.lab-solution>div{padding-block:.5rem 1rem}.lab-solution img{max-width:100%}@media(max-width:600px){.course-exercise{padding-top:2rem}.lab-workspace{padding:1.2rem .9rem;margin-inline:-.4rem}.lab-fields{grid-template-columns:minmax(0,1fr);gap:1.2rem}.lab-field input,.lab-field textarea,.lab-field select{font-size:16px}.lab-option{max-width:100%}.lab-options{gap:.45rem}.lab-order li{align-items:flex-start}.lab-order li>span{padding-top:.6rem}.lab-actions .lab-check{flex-basis:100%}.lab-order-actions{gap:.1rem}.lab-order button{min-width:44px}}@media(prefers-reduced-motion:reduce){.course-labs *{scroll-behavior:auto}}@font-face{font-family:"Source Serif 4";font-style:normal;font-display:swap;font-weight:400;src:url(./source-serif-4-latin-400-normal-DJ5YJwmz.woff2) format("woff2"),url(./source-serif-4-latin-400-normal-Dn3IlU-Z.woff) format("woff")}@font-face{font-family:"Source Serif 4";font-style:normal;font-display:swap;font-weight:500;src:url(./source-serif-4-latin-500-normal-CUHe9xxf.woff2) format("woff2"),url(./source-serif-4-latin-500-normal-DVVamBqs.woff) format("woff")}@font-face{font-family:"Source Serif 4";font-style:normal;font-display:swap;font-weight:600;src:url(./source-serif-4-latin-600-normal-DouSKlru.woff2) format("woff2"),url(./source-serif-4-latin-600-normal-DMD1h6_f.woff) format("woff")}@font-face{font-family:"Source Serif 4";font-style:italic;font-display:swap;font-weight:400;src:url(./source-serif-4-latin-400-italic-0j97Jm6B.woff2) format("woff2"),url(./source-serif-4-latin-400-italic-Dv9jnFA_.woff) format("woff")}@font-face{font-family:Inter;font-style:normal;font-display:swap;font-weight:400;src:url(./inter-latin-400-normal-C38fXH4l.woff2) format("woff2"),url(./inter-latin-400-normal-CyCys3Eg.woff) format("woff")}@font-face{font-family:Inter;font-style:normal;font-display:swap;font-weight:500;src:url(./inter-latin-500-normal-Cerq10X2.woff2) format("woff2"),url(./inter-latin-500-normal-BL9OpVg8.woff) format("woff")}@font-face{font-family:Inter;font-style:normal;font-display:swap;font-weight:600;src:url(./inter-latin-600-normal-LgqL8muc.woff2) format("woff2"),url(./inter-latin-600-normal-CiBQ2DWP.woff) format("woff")}@font-face{font-family:IBM Plex Mono;font-style:normal;font-display:swap;font-weight:400;src:url(./ibm-plex-mono-latin-400-normal-DMJ8VG8y.woff2) format("woff2"),url(./ibm-plex-mono-latin-400-normal-CvHOgSBP.woff) format("woff")}:root{--paper: #faf8f2;--surface: #f4f1e9;--ink: #20332e;--muted: #69736b;--line: #d8d9ce;--accent: #286557;--accent-soft: #e3efe7;--danger: #a23d34;--success: #286557;--code-bg: #f4f3ee;--sidebar-bg: #f5f3ec;--sidebar-ink: #253c33;--sidebar-muted: #727d71;--sidebar-line: #dfdfd3;--sidebar-active: #e2ede5;--font-serif: "Source Serif 4", Georgia, serif;--font-sans: "Inter", system-ui, sans-serif;--font-mono: "IBM Plex Mono", monospace;--shadow: 0 14px 60px #20332e1a;color-scheme:light;font-synthesis:none}:root[data-theme=slate]{--paper: #f5f8fa;--surface: #eaf0f4;--ink: #20394c;--muted: #617384;--line: #cbd7df;--accent: #9a4b27;--accent-soft: #f4e7dc;--danger: #a0353c;--success: #387463;--code-bg: #edf2f6;--sidebar-bg: #172d3e;--sidebar-ink: #e1ebf2;--sidebar-muted: #aac0ce;--sidebar-line: #3c5261;--sidebar-active: #304552;--shadow: 0 14px 60px #172d3e1a}*{box-sizing:border-box}html{scroll-behavior:auto;scroll-padding-top:36px}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--font-serif);font-size:19px;line-height:1.72;-webkit-font-smoothing:antialiased}button,input,textarea,select{font:inherit;color:inherit}button,a,input,textarea,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:default;opacity:.5}button{background:none;border:0}a{color:var(--accent);text-underline-offset:4px;text-decoration-thickness:1px}a:hover{text-decoration-thickness:2px}button,a,input,textarea,summary,select{outline-offset:5px}:focus-visible{outline:2px solid var(--accent)}::selection{background:var(--accent-soft);color:var(--ink)}h1,h2,h3,h4,p,figure{margin:0}h1,h2,h3,h4{font-weight:500;line-height:1.2;text-wrap:balance}h1{font-size:clamp(38px,4vw,56px);letter-spacing:-1.8px}h2{font-size:30px;letter-spacing:-.6px}h3{font-size:23px;letter-spacing:-.25px}button,nav,.small-note,.small-label,.eyebrow,.lesson-meta,.index-meta,.lesson-reading-time,.code-header,.term-example{font-family:var(--font-sans)}svg{flex-shrink:0;vertical-align:middle}input,textarea{accent-color:var(--accent)}textarea{display:block;width:100%;min-height:140px;padding:15px 17px;background:var(--paper);border:1px solid var(--line);border-radius:3px;font-family:var(--font-serif);font-size:18px;line-height:1.65;resize:vertical}textarea::placeholder{color:var(--muted);opacity:.75}input[type=text],input[type=number],select{border:1px solid var(--line);border-radius:3px;background:var(--paper);min-height:44px;padding:8px 10px}input[type=checkbox],input[type=radio]{width:19px;height:19px;flex-shrink:0}hr{border:0;border-top:1px solid var(--line);margin:30px 0}small{font-family:var(--font-sans)}.small-label,.eyebrow{font-size:11px;font-weight:500;letter-spacing:1.4px;text-transform:uppercase;line-height:1.6;color:var(--muted)}.muted,.small-note{color:var(--muted)}.small-note{font-size:12px;line-height:1.65}.text-button,.small-link{display:inline-flex;align-items:center;gap:7px;font-family:var(--font-sans);font-size:13px;min-height:40px;color:var(--accent);text-decoration:none}.text-button{padding:5px 0}.text-button:hover,.small-link:hover{text-decoration:underline}.icon-button{width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;border-radius:3px;color:inherit;flex-shrink:0}.icon-button:hover{background:var(--accent-soft);color:var(--accent)}.button{display:inline-flex;align-items:center;justify-content:center;gap:12px;min-height:44px;padding:10px 18px;background:var(--accent);color:var(--paper);font-family:var(--font-sans);font-size:13px;font-weight:500;border:1px solid var(--accent);border-radius:3px;text-decoration:none;line-height:1.5}.button:hover{filter:brightness(.93);text-decoration:none}.button.secondary{background:transparent;color:var(--accent);border-color:var(--line)}.skip-link{position:fixed;z-index:1000;top:-100px;left:20px;background:var(--ink);color:var(--paper);padding:12px}.skip-link:focus{top:10px}.main-content{padding-left:230px;outline:none;min-height:100vh}.course-sidebar{position:fixed;top:0;bottom:0;left:0;width:230px;background:var(--sidebar-bg);color:var(--sidebar-ink);border-right:1px solid var(--sidebar-line);display:flex;flex-direction:column;z-index:30}.sidebar-brand{padding:30px 25px 18px;display:flex;align-items:center;justify-content:space-between}.sidebar-brand>a{font-family:var(--font-serif);font-size:23px;color:var(--sidebar-ink);line-height:1.3;text-decoration:none;font-weight:600}.sidebar-brand>a span{font-family:var(--font-sans);font-size:10px;font-weight:400;display:block;color:var(--sidebar-muted);margin-top:8px;letter-spacing:.1px}.sidebar-close{display:none}.sidebar-search{margin:0 17px 20px;display:flex;align-items:center;gap:9px;font-family:var(--font-sans);font-size:11px;min-height:40px;color:var(--sidebar-muted);border-bottom:1px solid var(--sidebar-line);text-align:left}.sidebar-search kbd{margin-left:auto;font-size:11px;font-weight:400;border:1px solid var(--sidebar-line);padding:0 5px;border-radius:2px}.sidebar-lessons{overflow-y:auto;overscroll-behavior:contain;scrollbar-width:thin;scrollbar-color:var(--sidebar-line) transparent;flex:1;padding:0 0 24px}.contents-link{display:flex;align-items:center;gap:9px;margin:0 20px 14px;font-family:var(--font-sans);font-size:11px;min-height:38px;color:var(--sidebar-ink);text-decoration:none}.contents-link.active{color:var(--accent);font-weight:600}[data-theme=slate] .contents-link.active{color:#e7ac7e}.sidebar-group{margin-bottom:22px}.sidebar-group-label{display:flex;gap:7px;align-items:baseline;padding:0 23px 9px;font:9px/1.7 var(--font-sans);text-transform:uppercase;letter-spacing:1px;color:var(--sidebar-muted)}.sidebar-group-label>span{letter-spacing:.7px}.sidebar-lesson{display:flex;align-items:baseline;gap:12px;min-height:39px;padding:9px 20px 9px 23px;font:11px/1.5 var(--font-sans);color:var(--sidebar-ink);text-decoration:none;border-left:3px solid transparent}.sidebar-lesson>span:first-child{font-size:10px;width:17px;color:var(--sidebar-muted);font-variant-numeric:tabular-nums;flex-shrink:0}.sidebar-lesson:hover{background:var(--sidebar-active);text-decoration:none}.sidebar-lesson.active{border-left-color:var(--accent);background:var(--sidebar-active);font-weight:600}.sidebar-lesson.active>span:first-child{color:var(--sidebar-ink)}[data-theme=slate] .sidebar-lesson.active{border-left-color:#d5925e;color:#efbb92}.sidebar-footer{border-top:1px solid var(--sidebar-line);padding:13px 23px 15px}.sidebar-footer>a{display:flex;justify-content:space-between;align-items:center;font:12px/2.2 var(--font-sans);color:var(--sidebar-ink);text-decoration:none}.sidebar-utilities{display:flex;align-items:center;justify-content:space-between;color:var(--sidebar-muted);margin-top:6px}.sidebar-utilities .text-button{color:var(--sidebar-ink);font-size:11px}.mobile-header,.mobile-section-nav,.nav-scrim{display:none}.reading-layout{max-width:1290px;margin:0 auto;padding:64px 50px 90px;display:grid;grid-template-columns:minmax(0,810px) 166px;gap:54px;align-items:start}.lesson-article{min-width:0}.lesson-header{padding-bottom:36px;border-bottom:1px solid var(--line)}.lesson-meta{display:flex;align-items:center;justify-content:space-between;font-size:12px;margin-bottom:24px}.bookmark-button{font-size:11px;color:var(--muted);min-height:30px}.bookmark-button.is-bookmarked{color:var(--accent)}.lesson-header h1{margin-bottom:24px}.introduction{font-size:21px;line-height:1.65}.introduction p+p{font-size:19px}.lesson-section{padding-top:42px;scroll-margin-top:30px}.lesson-section>h2{margin-bottom:22px}.lesson-section+.lesson-section{margin-top:4px}.page-outline{position:sticky;top:54px;font-family:var(--font-sans);border-left:1px solid var(--line);padding-left:19px;max-height:calc(100vh - 95px);overflow:auto;scrollbar-width:thin}.page-outline>.small-label{font-size:9px;margin:5px 0 15px;letter-spacing:1.2px}.page-outline nav{display:grid;gap:3px}.page-outline nav a{font-size:10px;line-height:1.6;padding:6px 0;color:var(--muted);text-decoration:none;position:relative}.page-outline nav a.active{color:var(--accent);font-weight:500}.page-outline nav a.active:before{content:"";position:absolute;left:-20px;top:5px;bottom:5px;width:2px;background:var(--accent)}.answer-link{font-size:10px;display:flex;gap:7px;align-items:center;margin-top:22px;padding-top:14px;border-top:1px solid var(--line);text-decoration:none}.markdown{overflow-wrap:anywhere}.markdown p{margin:0 0 19px}.markdown p:last-child{margin-bottom:0}.markdown h1{margin-bottom:28px}.markdown h2{margin:40px 0 20px}.markdown h3{margin:30px 0 14px}.markdown h4{margin:24px 0 12px;font-size:21px}.markdown strong{font-weight:600}.markdown ul,.markdown ol{margin:12px 0 24px;padding-left:26px}.markdown li{padding-left:5px;margin-bottom:9px}.markdown li>p{margin-bottom:8px}.markdown li::marker{color:var(--muted)}.external-icon{display:inline-block;margin-left:2px;vertical-align:baseline;opacity:.7}.markdown blockquote{border-left:2px solid var(--accent);margin:24px 0;padding:6px 0 6px 20px;color:var(--muted)}.markdown :not(pre)>code{font-family:var(--font-mono);font-size:.75em;background:var(--surface);border:1px solid var(--line);border-radius:2px;padding:1px 4px;word-break:break-word}.markdown .figure-paragraph{margin:30px 0 10px}.markdown .figure-paragraph+p:has(>em:only-child){font-family:var(--font-sans);font-size:11px;line-height:1.7;color:var(--muted);margin-bottom:29px}.markdown .figure-paragraph+p>em:only-child{font-style:normal}.table-scroll{max-width:100%;overflow:auto;margin:26px 0;overscroll-behavior-x:contain;scrollbar-width:thin;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}table{width:100%;border-collapse:collapse;font:13px/1.6 var(--font-sans);text-align:left}th{font-weight:500;color:var(--ink);background:var(--surface)}th,td{padding:12px 14px;vertical-align:top;border-bottom:1px solid var(--line)}tr:last-child td{border-bottom:0}.table-scroll th{min-width:105px}.table-scroll td{min-width:110px}.table-scroll td:first-child{font-weight:500}table code{font-size:11px!important}.code-block{margin:25px 0;border:1px solid var(--line);border-radius:3px;background:var(--code-bg);overflow:hidden}.code-header{display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);padding:3px 16px;font-size:11px;font-weight:500;min-height:43px}.code-header .text-button{font-size:11px;min-height:32px}.code-block pre{margin:0;overflow:auto;padding:21px 22px;font:12px/1.85 var(--font-mono);tab-size:4;scrollbar-width:thin;overscroll-behavior:contain}.code-block code{font:inherit;white-space:pre;overflow-wrap:normal;color:var(--ink)}.hljs-comment{color:var(--muted);font-style:italic}.hljs-keyword,.hljs-built_in,.hljs-meta{color:#805430}.hljs-string,.hljs-attr{color:#286e53}.hljs-number,.hljs-literal{color:#8b4b56}.hljs-title,.hljs-function{color:#335b84}[data-theme=slate] .hljs-keyword{color:#835395}.copy-error{font:12px var(--font-sans);padding:10px}.term-link{display:inline;padding:0;color:inherit;font:inherit;line-height:inherit;letter-spacing:inherit;text-decoration:underline dotted var(--accent);text-underline-offset:5px;cursor:help}.term-first{background:var(--accent-soft);box-shadow:2px 0 var(--accent-soft),-2px 0 var(--accent-soft);border-radius:2px}.term-link:hover{color:var(--accent)}dialog{border:1px solid var(--line);background:var(--paper);color:var(--ink);box-shadow:var(--shadow);border-radius:5px}dialog::backdrop{background:#172a354a;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px)}.term-dialog{position:fixed;margin:0;width:410px;max-width:calc(100vw - 32px);padding:0;max-height:calc(100vh - 32px);overflow:auto}.term-dialog::backdrop{background:#132e3219;-webkit-backdrop-filter:none;backdrop-filter:none}.term-dialog-inner{padding:16px 22px 20px}.term-title{display:flex;align-items:center;gap:10px;margin-bottom:8px}.term-title h3{font-size:21px;flex:1}.term-title .icon-button{margin-right:-10px}.term-dialog .markdown{font-size:16px;line-height:1.65}.term-example{display:grid;text-align:center;border-top:1px solid var(--line);margin-top:15px;padding-top:12px;font-size:12px}.term-example span{display:flex;flex-direction:column;gap:3px}.term-example b{font-weight:400;color:var(--accent)}.term-dialog .small-link{margin-top:10px;font-size:11px}.markdown details{font-family:var(--font-sans);font-size:13px;border-top:1px solid var(--line);padding:10px 0}.markdown details+details{border-bottom:1px solid var(--line);margin-bottom:20px}.markdown summary{cursor:pointer;min-height:30px;line-height:30px;color:var(--accent)}.markdown details[open]{padding-bottom:18px}.markdown details p{margin:12px 0 0;line-height:1.65}.practical-section{margin-top:36px!important;border-top:1px solid var(--line)}.section-heading{margin-bottom:26px}.section-heading .eyebrow{margin-bottom:9px}.assessment-section,.exercise-section,.notes-section,.references{border-top:1px solid var(--line);margin-top:52px!important}.question{border:0;padding:0 0 32px;margin:0 0 30px;border-bottom:1px solid var(--line);min-width:0}.question:last-child{border-bottom:0;margin-bottom:0;padding-bottom:0}.question legend{width:100%;padding:0;margin-bottom:19px;display:block}.question legend>.small-label{display:block;margin-bottom:9px}.question legend .markdown{font-size:20px;line-height:1.5}.question-options{display:grid;gap:8px}.question-option{display:flex;align-items:flex-start;gap:13px;border:1px solid var(--line);padding:13px 15px;cursor:pointer;font:14px/1.6 var(--font-sans);border-radius:3px;min-height:51px;position:relative}.question-option:hover{border-color:var(--accent)}.question-option input{position:absolute;opacity:0;inset:0;width:100%;height:100%;margin:0;cursor:pointer}.question-option:has(input:focus-visible){outline:2px solid var(--accent);outline-offset:3px}.question-option>.markdown{flex:1;pointer-events:none}.question-option .option-letter{font-size:11px;margin-top:1px;display:flex;align-items:center;justify-content:center;border:1px solid var(--line);width:23px;height:23px;border-radius:50%;flex-shrink:0}.question-option.selected{background:var(--accent-soft);border-color:var(--accent)}.question-option.selected .option-letter{background:var(--accent);color:var(--paper);border-color:var(--accent)}.question-option.is-incorrect{border-style:dashed}.question-actions{display:flex;gap:20px;margin-top:17px;align-items:center}.question-feedback{margin-top:20px;padding:16px 20px;border-left:2px solid var(--accent);background:var(--surface);font-size:17px}.question-feedback>strong{display:block;margin-bottom:5px;font-family:var(--font-sans);font-size:12px;font-weight:600}.notes-heading{display:flex;align-items:center;justify-content:space-between;gap:15px;margin-bottom:20px}.lesson-pagination{display:flex;gap:30px;align-items:flex-start;justify-content:space-between;border-top:1px solid var(--line);padding-top:26px;margin-top:52px}.lesson-pagination a{display:flex;align-items:center;gap:12px;flex:1;font-size:17px;text-decoration:none;line-height:1.4}.lesson-pagination a.next{justify-content:flex-end;text-align:right}.lesson-pagination a small{display:block;font-size:10px;color:var(--muted);margin-bottom:6px}.references .markdown{font-size:15px;line-height:1.75}.references li{margin-bottom:13px}.course-index{max-width:1130px;margin:0 auto;padding:72px 65px 55px}.index-header{max-width:780px}.index-header .eyebrow{margin-bottom:22px}.index-header h1{font-size:65px;margin-bottom:26px}.index-intro{font-size:28px;line-height:1.42;max-width:660px;letter-spacing:-.3px;margin-bottom:20px}.index-description{font-size:18px;color:var(--muted);max-width:680px}.index-actions{display:flex;align-items:center;gap:27px;margin:30px 0 36px}.index-meta{display:flex;gap:30px;flex-wrap:wrap;font-size:10px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:15px 0;color:var(--muted)}.course-group{display:grid;grid-template-columns:200px 1fr;gap:40px;padding:40px 0;border-bottom:1px solid var(--line)}.group-heading .eyebrow{font-size:9px;margin-bottom:9px}.group-heading h2{font-size:25px;line-height:1.35}.course-lessons{min-width:0}.course-lesson{display:flex;gap:15px;align-items:center;color:var(--ink);text-decoration:none;padding:13px 0;min-height:55px;border-bottom:1px solid var(--line)}.course-lesson:first-child{padding-top:0}.course-lesson:last-child{border-bottom:0;padding-bottom:0}.course-lesson h3{font-size:19px;line-height:1.4;flex:1}.lesson-number{color:var(--muted);font:11px var(--font-sans);font-variant-numeric:tabular-nums}.lesson-reading-time{font-size:10px;color:var(--muted);white-space:nowrap}.course-lesson>svg{color:var(--accent)}.course-lesson:hover{color:var(--accent);text-decoration:none}.capstone-link{display:block;margin-top:45px;padding:30px 0;border-top:1px solid var(--line);text-decoration:none;color:var(--ink)}.capstone-link:hover{text-decoration:none;color:var(--accent)}.capstone-link h2{display:flex;align-items:center;justify-content:space-between;margin:13px 0}.capstone-link p{font-size:17px;color:var(--muted)}.index-footer{border-top:1px solid var(--line);margin-top:30px;padding-top:23px;display:flex;flex-wrap:wrap;gap:24px;font:11px var(--font-sans)}.standalone-page{max-width:920px;margin:auto;padding:65px 65px 110px}.standalone-page>.eyebrow{margin-bottom:15px}.standalone-page>h1{margin-bottom:30px}.standalone-page>section{margin-top:45px;padding-top:32px;border-top:1px solid var(--line)}.standalone-page>section>h2{margin-bottom:25px}.back-link{display:inline-flex;align-items:center;gap:9px;font:12px var(--font-sans);margin-bottom:36px;text-decoration:none;min-height:36px}.answer-item{margin:28px 0}.answer-item h3{font-size:20px;margin-bottom:10px}.glossary-search{display:flex;gap:12px;align-items:center;border-bottom:1px solid var(--line);margin:28px 0 10px}.glossary-search input{border:0;background:transparent;outline:none;min-height:50px;flex:1;font-size:18px;min-width:0}.glossary-page dl{margin-top:24px}.glossary-entry{display:grid;grid-template-columns:190px 1fr;gap:24px;border-bottom:1px solid var(--line);padding:22px 0}.glossary-entry dt{font-size:20px;line-height:1.4}.glossary-entry dd{margin:0;font-size:17px;line-height:1.65}.glossary-entry .small-link{font-size:11px}.capstone-response{display:block;margin:24px 0}.capstone-response>span{display:block;font-size:20px;margin-bottom:10px}.search-dialog{padding:0;width:720px;max-width:calc(100vw - 32px);max-height:80vh;margin:8vh auto}.search-top{display:flex;align-items:center;gap:15px;padding:16px 22px;border-bottom:1px solid var(--line)}.search-top input{flex:1;background:transparent;border:0;outline:none;min-width:0;font:15px var(--font-sans);min-height:38px}.search-results{overflow-y:auto;max-height:calc(80vh - 80px);padding:20px 25px}.search-results>a{display:flex;align-items:center;gap:17px;padding:18px 0;border-bottom:1px solid var(--line);color:var(--ink);text-decoration:none}.search-results>a:last-child{border-bottom:0}.search-results>a>div{flex:1}.search-results strong{font-size:20px;font-weight:500}.search-results p:not(.small-label){font:12px/1.6 var(--font-sans);color:var(--muted);margin-top:5px}.search-results a:hover strong{color:var(--accent)}.settings-dialog{max-width:calc(100vw - 32px);width:550px;padding:24px 30px 30px;font-size:18px;line-height:1.65}.dialog-heading{display:flex;align-items:center;justify-content:space-between;margin-bottom:15px}.dialog-heading h2{font-size:28px}.settings-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}.settings-dialog .small-note{margin-top:16px}.storage-warning{position:fixed;z-index:100;bottom:20px;left:50%;transform:translate(-50%);display:flex;align-items:center;gap:15px;background:var(--ink);color:var(--paper);max-width:calc(100vw - 32px);padding:15px 20px;font:12px/1.6 var(--font-sans);box-shadow:var(--shadow)}@media(min-width:1700px){.reading-layout{padding-top:78px;grid-template-columns:minmax(0,840px) 170px;gap:65px}.main-content{padding-left:250px}.course-sidebar{width:250px}.sidebar-lesson{font-size:12px}.sidebar-group-label{font-size:10px}}@media(max-width:1250px){.course-sidebar{width:210px}.main-content{padding-left:210px}.reading-layout{grid-template-columns:minmax(0,1fr);max-width:880px;padding:55px 48px 85px}.page-outline{display:none}.course-index{padding:60px 45px}.course-group{grid-template-columns:180px 1fr;gap:25px}.course-lesson h3{font-size:18px}.lesson-reading-time{display:none}.sidebar-brand{padding-left:23px}.sidebar-brand>a{font-size:22px}.standalone-page{padding:55px 45px 85px}}@media(max-width:850px){.course-sidebar{width:280px;transform:translate(-100%);transition:transform .2s}.course-sidebar.open{transform:translate(0)}.sidebar-close{display:flex}.sidebar-brand{padding-top:22px}.sidebar-lesson{font-size:13px;padding-top:12px;padding-bottom:12px;min-height:44px}.sidebar-group-label{font-size:10px}.sidebar-brand>a{font-size:24px}.sidebar-search,.contents-link{font-size:13px;min-height:44px}.sidebar-footer>a{font-size:14px;min-height:44px}.sidebar-utilities .text-button{font-size:13px}.sidebar-utilities .icon-button{height:44px;width:44px}.main-content{padding-left:0;padding-top:60px}.mobile-header{height:61px;display:flex;position:fixed;z-index:20;top:0;left:0;right:0;align-items:center;justify-content:space-between;padding:0 15px;background:var(--paper);border-bottom:1px solid var(--line)}.mobile-header>a{color:var(--ink);font-size:21px;font-weight:600;text-decoration:none}.mobile-header button{width:44px;height:44px}.nav-scrim{display:block;position:fixed;inset:0;background:#172a3555;z-index:25}.menu-is-open{overflow:hidden}.reading-layout{padding:35px 36px 100px;max-width:860px}.lesson-meta{margin-bottom:20px}.course-index{padding:45px 35px}.standalone-page{padding:38px 36px 90px}.mobile-section-nav{position:fixed;bottom:0;left:0;right:0;z-index:19;display:flex;background:var(--paper);border-top:1px solid var(--line);padding:2px 10px calc(2px + env(safe-area-inset-bottom))}.mobile-section-nav>a{flex:1;display:flex;justify-content:center;align-items:center;min-height:48px;color:var(--muted);text-decoration:none;font:11px var(--font-sans)}.mobile-section-nav>a:hover{color:var(--accent);background:var(--accent-soft)}html{scroll-padding-top:85px}.lesson-section{scroll-margin-top:80px}}@media(max-width:600px){body{font-size:18px;line-height:1.72}h1{font-size:38px;letter-spacing:-1.2px;line-height:1.15}h2{font-size:27px;letter-spacing:-.5px}h3{font-size:22px}.reading-layout{padding:29px 22px 95px}.lesson-header{padding-bottom:27px}.lesson-header h1{margin-bottom:21px}.lesson-meta{font-size:11px}.bookmark-button{font-size:10px;min-height:40px}.introduction{font-size:19px;line-height:1.65}.introduction p+p{font-size:18px}.lesson-section{padding-top:30px}.lesson-section>h2{margin-bottom:19px}.markdown p{margin-bottom:18px}.code-block{margin:22px -3px}.code-block pre{font-size:12px;padding:17px 14px;line-height:1.8}.code-header{padding:4px 13px;min-height:44px}.code-header .text-button{min-height:36px}.table-scroll{margin:22px 0}table{font-size:12px}th,td{padding:10px}.markdown .figure-paragraph{margin:25px 0 10px}.markdown .figure-paragraph+p:has(>em:only-child){font-size:11px}.assessment-section,.exercise-section,.references,.notes-section{margin-top:35px!important}.question legend .markdown{font-size:19px}.question-option{font-size:13px;padding:13px 12px;gap:10px}.question-feedback{font-size:16px;padding:15px}.question-actions .button{font-size:12px}.notes-heading{align-items:baseline;flex-wrap:wrap;gap:9px}.lesson-pagination{gap:20px}.lesson-pagination a{font-size:15px}.lesson-pagination a svg{width:16px}.lesson-pagination small{font-size:9px!important}.term-dialog{top:auto!important;bottom:20px;left:16px!important;max-height:70vh;width:calc(100vw - 32px);margin:0}.term-title h3{font-size:21px}.term-dialog .markdown{font-size:17px}.term-dialog .small-link{min-height:44px}.term-dialog .icon-button{min-width:44px;min-height:44px}.course-index{padding:35px 23px 45px}.index-header .eyebrow{font-size:9px;margin-bottom:18px}.index-header h1{font-size:49px;margin-bottom:22px}.index-intro{font-size:24px;line-height:1.45}.index-description{font-size:17px}.index-actions{align-items:flex-start;flex-direction:column;gap:12px;margin:25px 0}.index-meta{font-size:10px;gap:10px;flex-direction:column;padding:16px 0}.course-group{grid-template-columns:1fr;gap:22px;padding:30px 0}.group-heading h2{font-size:25px}.course-lesson{gap:13px;padding:14px 0}.course-lesson h3{font-size:18px}.course-lesson>svg{width:16px}.capstone-link{margin-top:28px;padding:24px 0}.capstone-link h2{font-size:27px}.capstone-link p{font-size:16px}.index-footer{gap:12px 20px;font-size:11px;line-height:1.8}.standalone-page{padding:32px 23px 90px}.standalone-page>h1{font-size:37px}.glossary-entry{grid-template-columns:1fr;gap:10px}.glossary-entry dt{font-size:23px}.glossary-entry dd{font-size:18px}.glossary-search input{font-size:17px}.search-dialog{margin:14px auto;max-height:calc(100dvh - 28px)}.search-top{padding:10px 15px;gap:8px}.search-top input{font-size:13px}.search-results{padding:17px;max-height:calc(100dvh - 104px)}.search-results strong{font-size:19px}.search-results p:not(.small-label){font-size:12px}.search-results>a{gap:13px}.settings-dialog{padding:21px;font-size:17px}.settings-actions{display:grid}.settings-actions .button{width:100%}.button{min-height:44px}.icon-button{height:44px;width:44px}.small-link{min-height:44px}.term-link{scroll-margin-top:80px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important;animation:none!important}}@media print{.course-sidebar,.mobile-header,.mobile-section-nav,.page-outline,.lesson-meta button,.question-actions,.sidebar-search,.lesson-pagination,.notes-section{display:none!important}.main-content{padding:0}.reading-layout{display:block;padding:0;max-width:none}body{background:#fff;color:#000;font-size:11pt}.lesson-section,.markdown .figure-paragraph{break-inside:avoid}h1{font-size:28pt}h2{font-size:20pt}.code-block{break-inside:avoid}a{color:inherit}dialog{display:none!important}}:root{--font-ui: var(--font-sans)}.sidebar-lesson{font-size:12px;line-height:1.55;padding-top:10px;padding-bottom:10px}.sidebar-group-label{font-size:10px;letter-spacing:.7px}.sidebar-group-label>span{letter-spacing:.35px}.sidebar-search,.contents-link{font-size:12px}.sidebar-lesson>span:first-child{font-size:11px}.page-outline nav a{font-size:11px;line-height:1.65;padding-block:7px}.page-outline>.small-label,.answer-link{font-size:10px}.course-labs{margin-top:1.5rem}.course-exercise:first-child{border-top:0;padding-top:0}.lab-heading h3{font-size:27px}.lab-field textarea{font-family:var(--font-serif);font-size:18px}.lab-workspace{background:color-mix(in srgb,var(--surface) 65%,var(--paper));border:1px solid var(--line);border-radius:3px}.code-block pre{font-size:13px}.code-header{font-size:12px}.question-option .markdown p{margin:0}@media(max-width:850px){[data-theme=slate] .mobile-header{background:var(--sidebar-bg);color:var(--sidebar-ink);border-color:var(--sidebar-line)}[data-theme=slate] .mobile-header>a{color:var(--sidebar-ink)}.sidebar-lesson{font-size:13px;min-height:44px}.sidebar-search,.contents-link{font-size:13px}}@media(max-width:600px){.lab-heading h3{font-size:25px}.lab-field textarea{font-size:17px}.lab-workspace{padding:17px 13px;margin-inline:0}.lab-kicker,.lab-saved{font-size:11px}.lab-label,.lab-field label{font-size:13px;font-weight:500}.code-block pre,.mobile-section-nav a{font-size:12px}}.lesson-section,.course-exercise{scroll-margin-top:0}.source-pack-access{display:flex;align-items:center;gap:25px;justify-content:space-between;padding:23px 0;margin:30px 0 18px;border-block:1px solid var(--line)}.source-pack-access p{font-size:17px;margin-top:8px}.source-pack-access .button{flex-shrink:0}.capstone-save-note{margin-bottom:25px}.capstone-task{padding-top:22px!important;margin-top:30px!important}.capstone-task-heading{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}.capstone-task>.markdown{font-size:19px}.capstone-response>.small-label{font-size:10px;margin-bottom:9px}.capstone-hint{border-bottom:1px solid var(--line);padding:12px 0;font-size:17px}.capstone-hint>summary{font:13px/2 var(--font-sans);color:var(--accent);cursor:pointer;min-height:36px}.capstone-hint>.markdown{margin:15px 0}.capstone-page>.button{margin-top:30px}.source-dialog{width:min(800px,calc(100vw - 24px));padding:0;max-height:90dvh;overflow:hidden}.source-dialog-heading{display:flex;justify-content:space-between;align-items:center;padding:18px 26px;border-bottom:1px solid var(--line)}.source-dialog-heading h2{font-size:26px;margin-top:4px}.source-dialog-body{padding:0 28px 30px;max-height:calc(90dvh - 106px);overflow:auto;font-size:17px;overscroll-behavior:contain}body:has(dialog[open]){overflow:hidden}@media(max-width:600px){.source-pack-access{align-items:flex-start;flex-direction:column;gap:15px}.source-pack-access .button{width:100%}.source-dialog-body{padding:0 20px 25px}.source-dialog-heading{padding:15px 20px}.source-dialog-body h3{font-size:22px}.capstone-task>.markdown{font-size:18px}}.search-section{display:inline-block;margin-top:8px;color:var(--accent);font:10px/1.5 var(--font-sans);border-bottom:1px solid var(--line)}