._lesson_1wn7u_2{--lab-accent:var(--accent-ink,#8a6d3b);color:var(--foreground);padding-bottom:80px}._header_1wn7u_3{max-width:930px;padding:48px 0 26px}._eyebrow_1wn7u_4{font:11px var(--font-mono,monospace);letter-spacing:.16em;color:var(--lab-accent);margin-bottom:18px}._header_1wn7u_3 h1{font-family:var(--font-display);letter-spacing:-.03em;margin:0 0 12px;font-size:clamp(32px,3.8vw,52px);font-weight:400;line-height:1.12}._subtitle_1wn7u_6{font-family:var(--font-display);color:var(--foreground);margin:0 0 22px;font-size:clamp(19px,1.8vw,24px);font-weight:300}._header_1wn7u_3 p{color:var(--muted-foreground);font-size:16px;line-height:1.85}._block_1wn7u_9,._labIntro_1wn7u_9,._results_1wn7u_9{border-top:1px solid var(--border);padding:32px 0 10px}._block_1wn7u_9 h2,._labIntro_1wn7u_9 h2,._results_1wn7u_9 h2{font-family:var(--font-display);letter-spacing:-.02em;margin:0 0 16px;font-size:clamp(22px,2.2vw,28px);font-weight:400}._block_1wn7u_9 p,._labIntro_1wn7u_9 p,._prose_1wn7u_11{max-width:46rem;color:var(--muted-foreground);margin:0 0 14px;font-size:15px;line-height:1.85}._cards_1wn7u_12{grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-bottom:20px;display:grid}._cards_1wn7u_12 article{border:1px solid var(--border);background:color-mix(in srgb, var(--card) 70%, transparent);border-radius:10px;flex-direction:column;min-width:0;padding:18px;display:flex}._cards_1wn7u_12 h3{margin:0 0 10px;font-size:15px;font-weight:500}._cards_1wn7u_12 p{font-size:13.5px;line-height:1.75}._equations_1wn7u_16{background:color-mix(in srgb, var(--foreground) 5%, transparent);max-width:100%;color:var(--foreground);border-radius:6px;gap:8px;margin-top:auto;padding:9px 10px;display:grid;overflow-x:auto}._equations_1wn7u_16 .katex-display{margin:0;font-size:.98em;overflow:auto hidden}._split_1wn7u_18{grid-template-columns:minmax(0,1fr) minmax(240px,340px);align-items:center;gap:32px;display:grid}._venn_1wn7u_19{width:100%;height:auto}._venn_1wn7u_19 text{fill:var(--foreground);font-size:15px}._vennOuter_1wn7u_21{fill:color-mix(in srgb, var(--lab-accent) 8%, transparent);stroke:var(--lab-accent);stroke-width:1.2px}._vennInner_1wn7u_22{fill:#3a6fc024;stroke:#3a6fc0;stroke-width:1.2px}._small_1wn7u_23{color:var(--muted-foreground);fill:var(--muted-foreground)!important;font-size:11px!important}._tables_1wn7u_24{grid-template-columns:minmax(0,1fr) minmax(0,1.2fr);gap:24px;display:grid}._tableWrap_1wn7u_25{overflow-x:auto}._tables_1wn7u_24 table,._record_1wn7u_26{border-collapse:collapse;width:100%;font-size:13px;line-height:1.55}._tables_1wn7u_24 caption{text-align:left;padding-bottom:8px;font-size:14px;font-weight:500}._tables_1wn7u_24 th,._tables_1wn7u_24 td{text-align:left;border-bottom:1px solid var(--border);vertical-align:top;padding:8px 10px}._tables_1wn7u_24 thead th{color:var(--muted-foreground);font-size:12px;font-weight:500}._note_1wn7u_30{color:var(--muted-foreground);font-size:12px!important;line-height:1.7!important}._chartWrap_1wn7u_33{margin:10px 0 6px;position:relative;overflow-x:auto}._chart_1wn7u_33{border-collapse:separate;border-spacing:2px;width:100%;min-width:760px;font-size:12px}._chart_1wn7u_33 caption{text-align:left;padding-bottom:8px;font-size:14px;font-weight:500}._chart_1wn7u_33 thead th{font:11px var(--font-mono,monospace);color:var(--muted-foreground);padding:4px 0;font-weight:400}._chart_1wn7u_33 tbody th{text-align:left;white-space:nowrap;padding:4px 10px 4px 0;font-weight:500}._chart_1wn7u_33 tbody th small{color:var(--muted-foreground);font-size:10.5px;font-weight:400;display:block}._chart_1wn7u_33 td{border-radius:4px;min-width:32px;height:38px}._colourless_1wn7u_40{background:repeating-linear-gradient(135deg, color-mix(in srgb, var(--foreground) 4%, transparent) 0 4px, transparent 4px 8px);border:1px solid var(--border)}._range_1wn7u_41{font:11px var(--font-mono,monospace);color:var(--muted-foreground);white-space:nowrap;padding-left:10px!important}._help_1wn7u_43{max-width:46rem;color:var(--muted-foreground);border-left:2px solid var(--lab-accent);background:color-mix(in srgb, var(--lab-accent) 6%, transparent);gap:6px;margin:0 0 14px;padding:12px 14px 12px 32px;font-size:13.5px;line-height:1.7;display:grid}._help_1wn7u_43 strong{color:var(--foreground);font-weight:500}._keysNote_1wn7u_45{color:var(--muted-foreground);align-items:center;gap:8px;margin:0 0 10px;font-size:12.5px;display:flex}._keysNote_1wn7u_45 svg{flex:none}._keysNote_1wn7u_45 a{color:var(--lab-accent);text-underline-offset:3px;text-decoration:underline}._bench_1wn7u_49{border:1px solid var(--border);background:var(--card);border-radius:12px;grid-template-columns:minmax(0,1fr);margin-top:18px;display:grid;overflow:hidden}._visual_1wn7u_50{flex-direction:column;min-width:0;display:flex}._visual_1wn7u_50:-webkit-full-screen{background:var(--background);overflow-y:auto}._visual_1wn7u_50:fullscreen{background:var(--background);overflow-y:auto}._visual_1wn7u_50:-webkit-full-screen ._stage_1wn7u_53{flex:auto;height:auto;min-height:320px}._visual_1wn7u_50:fullscreen ._stage_1wn7u_53{flex:auto;height:auto;min-height:320px}._stage_1wn7u_53{height:clamp(480px,70vh,720px);position:relative}._stage_1wn7u_53 .model-stage{height:100%;min-height:0;position:absolute;inset:0}._tooltip_1wn7u_56{pointer-events:none;background:color-mix(in srgb, var(--foreground) 88%, transparent);color:var(--background);white-space:nowrap;z-index:3;border-radius:6px;padding:6px 10px;font-size:12px;position:absolute;transform:translate(-50%,-110%);box-shadow:0 6px 18px -8px #0006}._gauges_1wn7u_57{z-index:2;gap:10px;display:grid;position:absolute;top:12px;right:12px}._gauge_1wn7u_57{background:color-mix(in srgb, var(--card) 88%, transparent);border:1px solid var(--border);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);border-radius:10px;width:148px;margin:0;padding:10px}._gauge_1wn7u_57 figcaption{font:10.5px var(--font-mono,monospace);letter-spacing:.08em;color:var(--muted-foreground);text-transform:uppercase;justify-content:space-between;align-items:center;gap:6px;margin-bottom:6px;display:flex}._fold_1wn7u_60{width:22px;height:22px;color:var(--muted-foreground);border-radius:50%;flex:none;place-items:center;transition:background .15s,color .15s;display:grid}._fold_1wn7u_60:hover{background:color-mix(in srgb, var(--foreground) 8%, transparent);color:var(--foreground)}._lesson_1wn7u_2 ._gaugeIcon_1wn7u_63{height:34px;color:var(--foreground);background:color-mix(in srgb, var(--card) 90%, transparent);border:1px solid var(--border);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);white-space:nowrap;border-radius:17px;justify-self:end;padding:0 12px;box-shadow:0 8px 20px -14px #00000080}._notices_1wn7u_65{z-index:4;pointer-events:none;justify-items:center;gap:8px;width:max-content;max-width:min(460px,100% - 190px);display:grid;position:absolute;top:62px;left:50%;transform:translate(-50%)}._notices_1wn7u_65>*{pointer-events:auto}._notices_1wn7u_65 output{text-align:center;color:var(--background);background:color-mix(in srgb, var(--foreground) 88%, transparent);border-radius:8px;margin:0;padding:8px 12px;font-size:13px;line-height:1.5;display:block;box-shadow:0 10px 24px -14px #0000008c}._lesson_1wn7u_2 ._notices_1wn7u_65 button{padding:10px 14px;font-size:13px;box-shadow:0 10px 24px -12px #0009}._why_1wn7u_69{color:var(--muted-foreground);flex-basis:100%;font-size:11.5px;line-height:1.5}._fine_1wn7u_70[aria-pressed=true]{border-color:var(--lab-accent);color:var(--lab-accent);background:color-mix(in srgb, var(--lab-accent) 10%, transparent)}._gauge_1wn7u_57 svg{width:100%;height:auto;display:block}._gauge_1wn7u_57 svg text{font:11px var(--font-mono,monospace);fill:var(--foreground)}._gauge_1wn7u_57 p{color:var(--muted-foreground);margin:6px 0 0;font-size:11px;line-height:1.5}._tube_1wn7u_74{fill:color-mix(in srgb, #e8f2f8 70%, var(--card));stroke:color-mix(in srgb, var(--foreground) 25%, transparent);stroke-width:1px}._tick_1wn7u_75{stroke:var(--foreground);stroke-width:1px;opacity:.75}._eye_1wn7u_4{stroke:#c0392b;stroke-width:1px;stroke-dasharray:4 3}._markLine_1wn7u_77{stroke:var(--foreground);stroke-width:1.6px}._dial_1wn7u_79{z-index:4;background:color-mix(in srgb, var(--card) 94%, transparent);border:1px solid var(--border);border-radius:12px;align-items:center;gap:10px;padding:10px 12px;display:flex;position:absolute;box-shadow:0 14px 34px -18px #00000073}._dial_1wn7u_79 svg{touch-action:none;cursor:grab;width:120px;height:120px}._dial_1wn7u_79 svg:focus-visible{outline:2px solid var(--lab-accent);outline-offset:2px;border-radius:8px}._dial_1wn7u_79 svg text{font:10px var(--font-mono,monospace);fill:var(--muted-foreground)}._dialTrack_1wn7u_83{fill:none;stroke:var(--border);stroke-width:10px;stroke-linecap:round}._dialFill_1wn7u_84{fill:none;stroke:#3a6fc0;stroke-width:10px;stroke-linecap:round}._dialHand_1wn7u_85{stroke:var(--foreground);stroke-width:2px}._dialKnob_1wn7u_86{fill:var(--background);stroke:var(--foreground);stroke-width:2px}._dialInfo_1wn7u_87{gap:6px;width:190px;font-size:12px;display:grid}._dialInfo_1wn7u_87 strong{font-size:14px;font-weight:500}._dialInfo_1wn7u_87 span{color:var(--muted-foreground);line-height:1.5}._dialInfo_1wn7u_87 div{flex-wrap:wrap;gap:4px;display:flex}._dialInfo_1wn7u_87 button{padding:5px 8px!important}._demoCaption_1wn7u_93{background:color-mix(in srgb, var(--card) 92%, transparent);border:1px solid var(--lab-accent);z-index:3;border-radius:10px;gap:4px;max-width:min(420px,55%);padding:12px 14px;display:grid;position:absolute;top:62px;left:14px}._demoCaption_1wn7u_93 span{font:10.5px var(--font-mono,monospace);letter-spacing:.12em;color:var(--lab-accent);text-transform:uppercase}._demoCaption_1wn7u_93 strong{font-size:15px;font-weight:500;line-height:1.4}._demoCaption_1wn7u_93 button{justify-self:start;margin-top:4px}._failed_1wn7u_98{z-index:5;text-align:center;background:color-mix(in srgb, var(--background) 72%, transparent);-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);place-content:center;justify-items:center;gap:10px;padding:24px;display:grid;position:absolute;inset:0}._failedTitle_1wn7u_99{letter-spacing:.16em;text-transform:uppercase;margin:0;font:12px var(--font-mono,monospace)!important;color:#c0392b!important}._failed_1wn7u_98 strong{font-family:var(--font-display);font-size:clamp(22px,2.4vw,30px);font-weight:400}._failed_1wn7u_98 p{max-width:34rem;color:var(--muted-foreground);margin:0;line-height:1.7}._failed_1wn7u_98 div{gap:8px;margin-top:6px;display:flex}._actions_1wn7u_104{border-top:1px solid var(--border);flex-wrap:wrap;align-items:center;gap:8px 16px;min-height:62px;padding:12px 18px;display:flex}._group_1wn7u_105{flex-wrap:wrap;align-items:center;gap:6px;display:flex}._group_1wn7u_105>span{color:var(--muted-foreground);font-variant-numeric:tabular-nums;margin-right:2px;font-size:12px}._toolbar_1wn7u_107{border-top:1px solid var(--border);flex-wrap:wrap;align-items:center;gap:8px;padding:12px 18px 16px;display:flex}._toolbar_1wn7u_107>span{color:var(--muted-foreground);margin-left:auto;font-size:11px}._lesson_1wn7u_2 button{font:inherit;cursor:pointer;color:inherit;border:1px solid var(--border);-webkit-user-select:none;user-select:none;background:0 0;border-radius:6px;align-items:center;gap:6px;padding:9px 11px;font-size:12px;transition:border-color .2s,background .2s,transform .1s;display:inline-flex}._lesson_1wn7u_2 button:hover:not(:disabled){border-color:var(--lab-accent)}._lesson_1wn7u_2 button:active:not(:disabled){transform:scale(.98)}._lesson_1wn7u_2 button:focus-visible{outline:2px solid var(--lab-accent);outline-offset:2px}._lesson_1wn7u_2 button:disabled{opacity:.4;cursor:default}._lesson_1wn7u_2 button[aria-pressed=true]{background:var(--foreground);color:var(--background);border-color:var(--foreground)}._lesson_1wn7u_2 ._primary_1wn7u_115{background:var(--primary-fill,#d2b98b);color:var(--primary-foreground,#17150f);border-color:#0000}._lesson_1wn7u_2 ._hold_1wn7u_116{touch-action:none;border-style:dashed}._lesson_1wn7u_2 ._hold_1wn7u_116:active:not(:disabled){background:color-mix(in srgb, var(--lab-accent) 18%, transparent)}._side_1wn7u_119{border-left:1px solid var(--border);min-width:0;max-height:calc(clamp(480px,70vh,720px) + 170px);padding:18px;overflow-y:auto}._side_1wn7u_119 h3{margin:0 0 12px;font-size:15px;font-weight:500}._steps_1wn7u_121{gap:4px;margin:0;padding:0;list-style:none;display:grid}._steps_1wn7u_121 li{border-radius:8px}._steps_1wn7u_121 li[data-on=true]{background:color-mix(in srgb, var(--lab-accent) 12%, transparent)}._steps_1wn7u_121 li[data-lit]{box-shadow:inset 2px 0 0 var(--lab-accent)}._steps_1wn7u_121 summary{cursor:pointer;gap:8px;padding:8px;font-size:13px;line-height:1.45;list-style:none;display:flex}._steps_1wn7u_121 summary::-webkit-details-marker{display:none}._steps_1wn7u_121 summary span{font:10px var(--font-mono,monospace);opacity:.6;padding-top:3px}._steps_1wn7u_121 summary div{gap:3px;min-width:0;display:grid}._steps_1wn7u_121 summary strong{font-weight:500}._steps_1wn7u_121 summary small{color:var(--muted-foreground);font-size:11.5px;line-height:1.55}._steps_1wn7u_121 p{color:var(--muted-foreground);margin:0 8px 10px 30px;font-size:12.5px;line-height:1.75}._lesson_1wn7u_2 ._showMe_1wn7u_132{margin:0 0 8px 30px;padding:5px 9px;font-size:11.5px}._record_1wn7u_26 th,._record_1wn7u_26 td{border-bottom:1px solid var(--border);text-align:center;padding:8px 10px}._record_1wn7u_26 th[scope=row]{text-align:left;color:var(--muted-foreground);white-space:nowrap;font-size:12.5px;font-weight:400}._record_1wn7u_26 thead th{font-weight:500}._record_1wn7u_26 input:not([type=checkbox]){text-align:center;width:92px;font:13px var(--font-mono,monospace);border:1px solid var(--border);background:var(--background);color:var(--foreground);border-radius:6px;padding:7px 6px}:is(._record_1wn7u_26 input:focus-visible,._calc_1wn7u_138 input:focus-visible){outline:2px solid var(--lab-accent);outline-offset:1px}._computed_1wn7u_139{font:13px var(--font-mono,monospace)}._calc_1wn7u_138{flex-wrap:wrap;align-items:end;gap:14px 26px;margin:18px 0;font-size:13.5px;display:flex}._calc_1wn7u_138 p{margin:0 0 8px}._calc_1wn7u_138 label{color:var(--muted-foreground);gap:6px;font-size:12.5px;display:grid}._calc_1wn7u_138 input{width:140px;font:13px var(--font-mono,monospace);border:1px solid var(--border);background:var(--background);color:var(--foreground);border-radius:6px;padding:8px}._report_1wn7u_144{border:1px solid var(--border);background:color-mix(in srgb, var(--card) 70%, transparent);border-radius:12px;margin-top:10px;padding:20px 22px;scroll-margin-top:96px}._report_1wn7u_144:focus:not(:focus-visible){outline:none}._report_1wn7u_144 h3{font-family:var(--font-display);margin:0 0 10px;font-size:22px;font-weight:400}._report_1wn7u_144 h4{margin:14px 0 6px;font-size:13px;font-weight:500}._report_1wn7u_144 ul{gap:8px;margin:0;padding:0;list-style:none;display:grid}._report_1wn7u_144 li{padding-left:22px;font-size:14px;line-height:1.7;position:relative}._bad_1wn7u_150 li:before{content:"×";color:#c0392b;font-weight:600;position:absolute;left:4px}._good_1wn7u_151 li:before{content:"✓";color:#3c8f5a;position:absolute;left:2px}._truth_1wn7u_152{border-top:1px solid var(--border);padding-top:12px;font-size:14px;color:var(--foreground)!important;margin-top:16px!important}._report_1wn7u_144 details{margin-top:12px;font-size:13px}._log_1wn7u_154{color:var(--muted-foreground);gap:4px;margin:8px 0 0;padding-left:0;list-style:none;display:grid}._log_1wn7u_154 span{min-width:46px;font:11px var(--font-mono,monospace);display:inline-block}._sources_1wn7u_156{color:var(--muted-foreground);margin-top:28px;font-size:11.5px;line-height:1.9}._sources_1wn7u_156 a{text-underline-offset:3px;text-decoration:underline}@media (max-width:1100px){._cards_1wn7u_12,._tables_1wn7u_24{grid-template-columns:1fr}}@media (max-width:960px){._bench_1wn7u_49{grid-template-columns:1fr}._side_1wn7u_119{border-left:0;border-top:1px solid var(--border);max-height:none}._split_1wn7u_18{grid-template-columns:1fr}}@media (max-width:640px){._stage_1wn7u_53{height:460px}._gauges_1wn7u_57{gap:6px;top:62px;right:6px}._gauge_1wn7u_57{width:98px;padding:6px 7px}._gauge_1wn7u_57 figcaption{letter-spacing:.05em;margin-bottom:4px;font-size:9.5px}._gauge_1wn7u_57 p{font-size:10.5px;line-height:1.4}._notices_1wn7u_65{max-width:calc(100% - 130px)}._toolbar_1wn7u_107>span{flex-basis:100%;margin-left:0}._actions_1wn7u_104,._toolbar_1wn7u_107{padding-inline:12px}._header_1wn7u_3{padding-top:30px}}._dial_1wn7u_79[data-docked]{box-shadow:none;justify-content:flex-start;margin:10px 12px 0;position:static;transform:none}._dial_1wn7u_79[data-docked] svg{flex:none;width:104px;height:104px}._dial_1wn7u_79[data-docked] ._dialInfo_1wn7u_87{flex:1;width:auto;min-width:0}._dial_1wn7u_79[data-docked] ._dialInfo_1wn7u_87 div{flex-wrap:wrap}@media (hover:none) and (pointer:coarse){._actions_1wn7u_104 button,._toolbar_1wn7u_107 button,._calc_1wn7u_138 button,._failed_1wn7u_98 button,._demoCaption_1wn7u_93 button{min-height:42px;padding:9px 13px;font-size:14px}._dialInfo_1wn7u_87 button{min-height:38px;padding:6px 10px!important}._fold_1wn7u_60{width:26px;height:26px}._group_1wn7u_105>span{font-size:13.5px}._toolbar_1wn7u_107>span{font-size:12.5px}._dialInfo_1wn7u_87{font-size:13.5px}._dialInfo_1wn7u_87 strong{font-size:15px}._keysNote_1wn7u_45{font-size:13.5px}._side_1wn7u_119 h3{font-size:17px}._steps_1wn7u_121 summary{padding:10px 8px;font-size:15px;line-height:1.5}._steps_1wn7u_121 summary span{font-size:11px}._steps_1wn7u_121 summary small,._why_1wn7u_69{font-size:13px}._steps_1wn7u_121 p{font-size:14px;line-height:1.75}._record_1wn7u_26 th[scope=row]{font-size:13.5px}._record_1wn7u_26 input:not([type=checkbox]),._calc_1wn7u_138 input{font-size:16px}._calc_1wn7u_138 label{font-size:13.5px}._report_1wn7u_144 li{font-size:15px}}._bench_1wn7u_49>section{width:100%}._bench_1wn7u_49 ._stage_1wn7u_53{height:100%;min-height:0}._bench_1wn7u_49 ._side_1wn7u_119{border:0;max-height:none;padding:0}._bench_1wn7u_49 ._toolbar_1wn7u_107{padding:8px 14px}._bench_1wn7u_49 ._actions_1wn7u_104{min-height:0;padding:8px 14px}._bench_1wn7u_49 ._actions_1wn7u_104:empty{display:none}._bench_1wn7u_49 ._toolbar_1wn7u_107>span{max-width:300px}