._reader_a2qcs_1{--book-paper:#f4f3e9;--book-light:#fffef6;--book-field:#e5e8d9;--book-ink:#303a29;--book-muted:#626b55;--book-accent:#64734c;--book-line:#6c795633;--ink:var(--book-ink);--page:var(--book-paper);--muted:var(--book-muted);--rule:var(--book-line);isolation:isolate;color:var(--book-ink);color-scheme:light;background:radial-gradient(ellipse 90% 760px at 75% 180px, var(--book-light), transparent), var(--book-paper);position:relative}._systems_a2qcs_20{--book-accent:#64734c}._information_a2qcs_21{--book-paper:#eff3f4;--book-light:#fbffff;--book-field:#dfe9ee;--book-ink:#243c4c;--book-muted:#51697a;--book-accent:#3e6a84;--book-line:#3e6a8433}._quantum_a2qcs_22{--book-paper:#f1edf5;--book-light:#fffbff;--book-field:#e7dfef;--book-ink:#3d2c4d;--book-muted:#70607c;--book-accent:#785390;--book-line:#78539033}._reader_a2qcs_1 ::selection{background:var(--book-field);color:var(--book-ink)}._reader_a2qcs_1 a:focus-visible,._reader_a2qcs_1 summary:focus-visible{outline:2px solid var(--book-accent);outline-offset:5px}._main_a2qcs_25{width:calc(100% - clamp(40px,9.5vw,160px));max-width:1216px;margin-inline:auto}._readerNav_a2qcs_26{color:var(--book-muted);justify-content:space-between;align-items:center;gap:20px;padding-block:17px;font-size:.75rem;display:flex}._readerNav_a2qcs_26 a{align-items:center;gap:10px;min-height:44px;text-decoration:none;display:inline-flex}._readerNav_a2qcs_26 a:hover{color:var(--book-ink);text-decoration:underline}._hero_a2qcs_29{border-bottom:1px solid var(--book-line);align-items:center;min-height:590px;padding-block:58px 75px;display:flex;position:relative}._heroText_a2qcs_30{z-index:1;width:74%;max-width:800px;position:relative}._bookTitle_a2qcs_31{color:var(--book-accent);font:500 .78rem/1.7 var(--font-sans);letter-spacing:.035em}._subtitle_a2qcs_32{color:var(--book-muted);font:italic 400 .97rem/1.7 var(--font-serif);margin-top:4px}._openingLabel_a2qcs_33{color:var(--book-muted);font:400 .6rem/1.6 var(--font-mono);letter-spacing:.15em;text-transform:uppercase;margin-top:52px}._hero_a2qcs_29 h1{max-width:12.5ch;font:400 clamp(3.6rem, 6.5vw, 6.1rem)/1.08 var(--font-serif);letter-spacing:-.058em;text-wrap:balance;margin-block:14px 32px}._systems_a2qcs_20 ._hero_a2qcs_29 h1{max-width:8ch}._byline_a2qcs_36{color:var(--book-muted);font:400 .77rem/1.75 var(--font-sans)}._byline_a2qcs_36 strong{color:var(--book-ink);font-weight:600}._byline_a2qcs_36 p+p{margin-top:5px}._byline_a2qcs_36 span{margin-left:1.1em;display:inline-block}._begin_a2qcs_40{min-height:44px;color:var(--book-accent);text-decoration-color:var(--book-line);align-items:center;gap:32px;margin-top:23px;font-size:.8rem;display:inline-flex}._begin_a2qcs_40:hover{text-decoration-color:currentColor}._motif_a2qcs_42{width:43%;max-width:490px;color:var(--book-accent);pointer-events:none;position:absolute;top:50%;right:-2%;transform:translateY(-50%)}._motif_a2qcs_42 svg{width:100%;display:block;overflow:visible}._motifLine_a2qcs_44{stroke:currentColor;stroke-width:.9px;opacity:.3}._windowGlow_a2qcs_45{fill:var(--book-light);filter:drop-shadow(0 12px 25px #77855c17)}._openPane_a2qcs_46{stroke:currentColor;stroke-width:1.2px;fill:var(--book-field);fill-opacity:.35;opacity:.35}._moth_a2qcs_47{fill:currentColor;fill-opacity:.22;stroke:currentColor;stroke-opacity:.4;stroke-width:.8px}._traceSheet_a2qcs_48{fill:var(--book-light);stroke:currentColor;stroke-opacity:.2;filter:drop-shadow(4px 15px 20px #3e6a8412)}._traceLine_a2qcs_49{stroke:currentColor;stroke-width:1.1px;opacity:.25}._halo_a2qcs_50{stroke:currentColor;stroke-width:.5px;opacity:.17}._splitLight_a2qcs_51{stroke:currentColor;stroke-width:2px;opacity:.32;filter:drop-shadow(0 0 12px #a987c580)}._quietRing_a2qcs_52{stroke:currentColor;stroke-width:1.1px;opacity:.35}._lightPoint_a2qcs_53{fill:currentColor;opacity:.45}._readingGrid_a2qcs_54{grid-template-columns:minmax(120px,1fr) minmax(0,660px) minmax(80px,1fr);align-items:start;gap:clamp(25px,4vw,65px);padding-top:clamp(55px,7vw,105px);scroll-margin-top:32px;display:grid}._marginNote_a2qcs_55{color:var(--book-muted);font:400 .65rem/1.8 var(--font-mono);padding-top:9px}._marginLabel_a2qcs_56{text-transform:uppercase;letter-spacing:.06em}._sceneNote_a2qcs_57{max-width:20ch;font:400 .76rem/1.85 var(--font-sans);margin-top:22px}._chapter_a2qcs_58{min-width:0}._prose_a2qcs_59{font:400 clamp(1.06rem, 1.56vw, 1.23rem)/1.95 var(--font-serif);letter-spacing:-.01em}._prose_a2qcs_59>p{margin-bottom:1.2em}._prose_a2qcs_59>p:first-child{letter-spacing:-.025em;margin-bottom:1.25em;font-size:1.24em;line-height:1.65}._prose_a2qcs_59 em{font-style:italic}._sceneBreak_a2qcs_63{border:0;border-top:1px solid var(--book-accent);opacity:.45;width:38px;height:0;margin:2.2em auto}._figure_a2qcs_64{border:1px solid var(--book-line);background:radial-gradient(ellipse at 5% 0, var(--book-light), transparent 80%), var(--book-field);box-shadow:0 18px 45px -35px var(--book-accent);font-family:var(--font-sans);letter-spacing:normal;border-radius:3px;margin:2.6rem -2.3rem;padding:clamp(25px,4vw,45px)}._figureLabel_a2qcs_65{color:var(--book-accent);font:400 .6rem/1.65 var(--font-mono);letter-spacing:.07em;text-transform:uppercase;margin-bottom:14px}._figure_a2qcs_64 h2{color:var(--book-ink);font:400 clamp(1.55rem, 2.5vw, 2rem)/1.3 var(--font-serif);letter-spacing:-.04em;text-wrap:balance;margin:0}._figure_a2qcs_64 figcaption,._figureCaption_a2qcs_67{color:var(--book-muted);font:400 .74rem/1.85 var(--font-sans);margin-top:25px}._traceJourney_a2qcs_68{margin-top:30px}._eraLabel_a2qcs_69{color:var(--book-accent);font:500 .66rem/1.6 var(--font-mono);text-transform:uppercase;letter-spacing:.025em}._traceEra_a2qcs_70 ol{gap:20px;margin:20px 0 0;padding:0;list-style:none;display:grid}._traceEra_a2qcs_70 li{grid-template-columns:45px minmax(0,1fr);align-items:center;gap:17px;display:grid}._traceSymbol_a2qcs_72{width:44px;height:44px;color:var(--book-accent);text-align:center;font:400 48px/.8 var(--font-serif);fill:none;stroke:currentColor;stroke-width:1.3px;display:block}._traceEra_a2qcs_70 strong{color:var(--book-ink);font:500 .92rem/1.6 var(--font-sans);display:block}._traceEra_a2qcs_70 li div>span{color:var(--book-muted);font:400 .78rem/1.75 var(--font-sans);margin-top:3px;display:block}._archiveBridge_a2qcs_75{border-block:1px solid var(--book-line);color:var(--book-muted);font:400 .65rem/1.8 var(--font-mono);grid-template-columns:1fr auto 1fr;align-items:center;gap:16px;margin:30px 0;padding-block:14px;display:grid;position:relative}._archiveBridge_a2qcs_75 span:nth-child(2){color:var(--book-accent);font:400 25px/1 var(--font-sans)}._archiveBridge_a2qcs_75 span:last-child{text-align:right}._opticsControls_a2qcs_78{border:0;grid-template-columns:1fr 1fr;gap:8px;min-width:0;margin:23px 0 0;padding:0;display:grid}._opticsControls_a2qcs_78 legend{color:var(--book-muted);font:400 .75rem/1.7 var(--font-sans);margin-bottom:10px}._stateInput_a2qcs_80{clip-path:inset(50%);white-space:nowrap;border:0;width:1px;height:1px;padding:0;position:absolute;overflow:hidden}._stateLabel_a2qcs_81{min-height:46px;color:var(--book-accent);border:1px solid var(--book-line);font:500 .75rem/1.6 var(--font-sans);cursor:pointer;text-align:center;background:#fff5;border-radius:2px;justify-content:center;align-items:center;padding:11px 8px;display:flex}._stateInput_a2qcs_80:checked+._stateLabel_a2qcs_81{color:#fff;background:var(--book-accent);border-color:var(--book-accent)}._stateInput_a2qcs_80:focus-visible+._stateLabel_a2qcs_81{outline:2px solid var(--book-accent);outline-offset:4px}._stateLabel_a2qcs_81:hover{border-color:var(--book-accent)}._opticalStates_a2qcs_85{grid-column:1/-1;min-width:0}._opticalState_a2qcs_85{display:none}._stateInput_a2qcs_80[value=open]:checked~._opticalStates_a2qcs_85>[data-state=open],._stateInput_a2qcs_80[value=blocked]:checked~._opticalStates_a2qcs_85>[data-state=blocked]{display:block}._apparatus_a2qcs_88{width:100%;max-width:520px;height:auto;margin:29px auto 0;display:block;overflow:visible}._apparatus_a2qcs_88 text{fill:var(--book-muted);font:400 15px var(--font-sans)}._apparatus_a2qcs_88 ._detectorLabel_a2qcs_90{fill:var(--book-ink);font-size:19px;font-weight:600}._opticalRoute_a2qcs_91{fill:none;stroke:var(--book-accent);stroke-width:2px}._blockedRoute_a2qcs_92{fill:none;stroke:var(--book-accent);stroke-width:1.5px;stroke-dasharray:4 6;opacity:.6}._outputA_a2qcs_93,._outputB_a2qcs_93{fill:none;stroke:var(--book-accent);stroke-width:3px}._quietOutput_a2qcs_94{fill:none;stroke:var(--book-muted);stroke-width:1.5px;stroke-dasharray:3 6}._optic_a2qcs_78{stroke:var(--book-ink);stroke-width:5px}._mirror_a2qcs_96{stroke:var(--book-accent);stroke-width:5px}._sourceDot_a2qcs_97{fill:var(--book-accent)}._emptyDetector_a2qcs_98{fill:var(--book-light);stroke:var(--book-muted);stroke-width:1.5px}._obstruction_a2qcs_99{stroke:var(--book-ink);stroke-width:3px}._apparatus_a2qcs_88 ._blockLabel_a2qcs_100{fill:var(--book-ink);font-size:13px}._numberLabels_a2qcs_101,._apparatusLegend_a2qcs_101{display:none}._probabilityLabel_a2qcs_102{color:var(--book-muted);font:400 .65rem/1.7 var(--font-mono);margin-bottom:13px}._probabilities_a2qcs_103{border-block:1px solid var(--book-line);grid-template-columns:repeat(3,minmax(0,1fr));margin:0;padding-block:17px;display:grid}._probabilities_a2qcs_103>div{padding-inline:12px}._probabilities_a2qcs_103>div:first-child{padding-left:0}._probabilities_a2qcs_103>div+div{border-left:1px solid var(--book-line)}._probabilities_a2qcs_103 dt{color:var(--book-muted);font:400 .7rem/1.6 var(--font-sans)}._probabilities_a2qcs_103 dd{color:var(--book-ink);font:400 clamp(1.65rem, 3vw, 2.2rem)/1.3 var(--font-serif);font-variant-numeric:tabular-nums;margin:6px 0 0}._stateExplanation_a2qcs_109{min-height:5.4em;color:var(--book-ink);font:400 .8rem/1.8 var(--font-sans);margin-top:20px}._chapterEnd_a2qcs_110{color:var(--book-accent);justify-content:center;align-items:center;gap:12px;margin:42px 0;font-size:.6rem;display:flex}._chapterEnd_a2qcs_110 span{background:var(--book-line);width:22px;height:1px}._sourceRow_a2qcs_112{border-block:1px solid var(--book-line);color:var(--book-muted);font:400 .67rem/1.8 var(--font-sans);justify-content:space-between;align-items:center;gap:15px;padding-block:15px;display:flex}._sourceRow_a2qcs_112 a{align-items:center;gap:7px;min-height:44px;display:inline-flex}._sourceRow_a2qcs_112 svg{width:14px}._contents_a2qcs_115{margin-top:44px}._contents_a2qcs_115 ol{margin:24px 0 0;padding:0;list-style:none}._contents_a2qcs_115 li{position:relative}._contents_a2qcs_115 li:not(:last-child):before{content:"";background:var(--book-line);width:1px;position:absolute;top:50%;bottom:-50%;left:5px}._contents_a2qcs_115 a{min-height:57px;font:400 .95rem/1.55 var(--font-serif);grid-template-columns:11px minmax(0,1fr) auto;align-items:center;gap:17px;padding-block:9px;text-decoration:none;display:grid}._contents_a2qcs_115 a:hover>span:nth-child(2){text-decoration:underline}._chapterDot_a2qcs_121{border:1px solid var(--book-accent);background:var(--book-field);border-radius:50%;width:11px;height:11px;position:relative}._chapterPage_a2qcs_122{color:var(--book-muted);white-space:nowrap;font:400 .61rem/1.6 var(--font-mono);align-items:center;gap:7px;display:inline-flex}._chapterPage_a2qcs_122 svg{width:14px}._continuation_a2qcs_124{margin:55px 0 95px;padding-top:8px}._continuation_a2qcs_124 h2{font:400 clamp(1.9rem, 3.4vw, 2.6rem)/1.3 var(--font-serif);letter-spacing:-.045em;margin:10px 0 15px}._continuation_a2qcs_124>p:not(._figureLabel_a2qcs_65){color:var(--book-muted);font:400 .84rem/1.85 var(--font-sans)}._continueButton_a2qcs_127{border:1px solid var(--book-accent);background:var(--book-accent);color:#fff;width:fit-content;max-width:100%;min-height:53px;font:500 .8rem/1.65 var(--font-sans);border-radius:2px;justify-content:space-between;align-items:center;gap:20px;margin-top:25px;padding:13px 20px;text-decoration:none;display:flex}._continueButton_a2qcs_127:hover{background:var(--book-ink);border-color:var(--book-ink)}._returnLink_a2qcs_129{width:fit-content;color:var(--book-muted);font:400 .74rem/1.7 var(--font-sans);margin-top:17px;padding-block:8px;display:block;position:relative}._returnLink_a2qcs_129:after{content:"";position:absolute;inset:min(0px,50% - 22px) 0}@media (width<=1050px){._readingGrid_a2qcs_54{grid-template-columns:115px minmax(0,660px);gap:35px}._figure_a2qcs_64{margin-inline:0}._hero_a2qcs_29{min-height:520px}._motif_a2qcs_42{opacity:.72;width:42%;right:-3%}._heroText_a2qcs_30{width:78%}}@media (width<=700px){._main_a2qcs_25{width:calc(100% - 40px)}._readerNav_a2qcs_26{align-items:start;gap:12px;padding-block:12px;font-size:.68rem}._readerNav_a2qcs_26 a{gap:6px}._readerNav_a2qcs_26 svg{width:15px}._hero_a2qcs_29{min-height:0;padding:24px 0 37px;display:block}._heroText_a2qcs_30{width:100%}._bookTitle_a2qcs_31{max-width:28ch;font-size:.69rem}._subtitle_a2qcs_32{max-width:24ch;font-size:.85rem}._openingLabel_a2qcs_33{margin-top:80px;font-size:.54rem}._hero_a2qcs_29 h1{max-width:12ch;margin-block:13px 25px;font-size:clamp(2.85rem,10.9vw,4.6rem);line-height:1.12}._systems_a2qcs_20 ._hero_a2qcs_29 h1{max-width:8ch}._byline_a2qcs_36{font-size:.71rem}._byline_a2qcs_36 p+p{margin-top:7px}._byline_a2qcs_36 span{margin-left:.85em}._begin_a2qcs_40{margin-top:17px;font-size:.75rem}._motif_a2qcs_42{opacity:.64;width:190px;top:-11px;right:-12px;transform:none}._systems_a2qcs_20 ._motif_a2qcs_42{width:180px;top:-2px}._information_a2qcs_21 ._motif_a2qcs_42{width:170px;top:8px;right:-10px}._readingGrid_a2qcs_54{padding-top:35px;display:block}._marginNote_a2qcs_55{flex-wrap:wrap;gap:0 12px;margin-bottom:27px;padding-top:0;font-size:.59rem;display:flex}._sceneNote_a2qcs_57{max-width:43ch;font:400 .74rem/1.8 var(--font-sans);flex:1 0 100%;margin-top:11px}._prose_a2qcs_59{font-size:clamp(1.04rem,4.4vw,1.2rem);line-height:1.96}._prose_a2qcs_59>p{margin-bottom:1.14em}._prose_a2qcs_59>p:first-child{font-size:1.14em;line-height:1.8}._figure_a2qcs_64{margin:33px -4px;padding:22px 18px}._figure_a2qcs_64 h2{font-size:1.6rem}._figureLabel_a2qcs_65{font-size:.53rem}._figure_a2qcs_64 figcaption,._figureCaption_a2qcs_67{font-size:.69rem}._traceEra_a2qcs_70 li{grid-template-columns:35px minmax(0,1fr);gap:10px}._traceSymbol_a2qcs_72{width:34px}._traceEra_a2qcs_70 strong{font-size:.83rem}._traceEra_a2qcs_70 li div>span{font-size:.73rem}._archiveBridge_a2qcs_75{gap:10px;font-size:.57rem}._eraLabel_a2qcs_69{font-size:.6rem}._stateLabel_a2qcs_81{padding-inline:5px;font-size:.66rem}._apparatus_a2qcs_88{margin-top:26px}._partLabels_a2qcs_178,._apparatus_a2qcs_88 ._blockLabel_a2qcs_100{display:none}._numberLabels_a2qcs_101{display:block}._numberLabels_a2qcs_101 text{fill:var(--book-ink);font-size:27px}._apparatus_a2qcs_88 ._detectorLabel_a2qcs_90{font-size:28px}._apparatusLegend_a2qcs_101{color:var(--book-muted);font:400 .7rem/1.75 var(--font-sans);gap:9px;margin:0 0 22px;padding:0;list-style:none;display:grid}._apparatusLegend_a2qcs_101 strong{color:var(--book-ink);font-weight:500;display:block}._probabilityLabel_a2qcs_102{font-size:.55rem}._probabilities_a2qcs_103>div{padding-inline:9px}._probabilities_a2qcs_103 dt{font-size:.64rem}._probabilities_a2qcs_103 dd{font-size:1.55rem}._stateExplanation_a2qcs_109{min-height:9em;font-size:.76rem}._sourceRow_a2qcs_112{flex-wrap:wrap;gap:0 12px;font-size:.63rem}._contents_a2qcs_115 a{grid-template-columns:11px minmax(0,1fr) auto;gap:11px;font-size:.85rem}._chapterPage_a2qcs_122{gap:3px;font-size:.54rem}._chapterPage_a2qcs_122 svg{width:12px}._continuation_a2qcs_124{margin:40px 0 60px}._continueButton_a2qcs_127{width:100%;padding-inline:15px;font-size:.76rem}}@media print{._reader_a2qcs_1{color:#111;background:#fff}._readerNav_a2qcs_26,._motif_a2qcs_42,._begin_a2qcs_40,._marginNote_a2qcs_55,._continueButton_a2qcs_127,._returnLink_a2qcs_129{display:none}._hero_a2qcs_29{min-height:0;padding-block:20px}._heroText_a2qcs_30{width:100%}._hero_a2qcs_29 h1{font-size:38pt}._readingGrid_a2qcs_54{padding-top:25px;display:block}._prose_a2qcs_59{font-size:11pt}._figure_a2qcs_64{break-inside:avoid;box-shadow:none;margin-inline:0}}