@font-face{font-family:Aurora;src:url('../assets/fonts/inter-variable.woff2') format('woff2');font-weight:100 900;font-style:normal;font-display:swap}
:root{--paper:#f7f7f4;--white:#fff;--ink:#080e1b;--muted:#626d77;--line:#d1d7d4;--line-dark:#a9b2ac;--sage:#94a88c;--sage-dark:#596b53;--sage-pale:#c5cfc0;--wash:#eaeee5;--button:#6d7779;--focus:#3d5947;--ease:cubic-bezier(.16,1,.3,1);--gutter:clamp(22px,5vw,76px);--measure:1440px}
*{box-sizing:border-box}html{scroll-behavior:auto;scroll-padding-top:116px;scrollbar-gutter:stable;scrollbar-color:var(--line-dark) var(--paper)}body{margin:0;background:var(--paper);color:var(--ink);font:400 15px/1.6 Aurora,Arial,sans-serif;-webkit-font-smoothing:antialiased}::selection{background:var(--sage-pale);color:var(--ink)}a{color:inherit;text-decoration-thickness:1px;text-underline-offset:4px}button,input,select{font:inherit}button,summary{cursor:pointer}button{color:inherit}input{caret-color:var(--focus)}button:disabled{cursor:default;opacity:.55}a,button,input,summary,select{outline-offset:5px}a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible,select:focus-visible{outline:2px solid var(--focus)}img,svg{max-width:100%}svg{display:block}.icon{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.35;stroke-linecap:round;stroke-linejoin:round;flex:none}p{margin:0 0 18px}h1,h2,h3{margin:0;line-height:1.13;font-weight:450;text-wrap:balance}h1{font-size:clamp(38px,5vw,68px);letter-spacing:-.034em}h2{font-size:clamp(26px,3vw,38px);letter-spacing:-.025em}h3{font-size:21px;letter-spacing:-.014em}small{font-size:12px}b,strong{font-weight:570}[hidden]{display:none!important}.skip{position:fixed;z-index:100;top:-90px;left:20px;background:var(--ink);color:#fff;padding:14px 22px}.skip:focus{top:14px}.wrap{max-width:var(--measure);margin:auto;padding-inline:var(--gutter)}
.site-header{position:sticky;top:0;z-index:30;background:var(--paper);border-bottom:1px solid var(--line)}.header-inner{height:85px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:flex;align-items:center;gap:13px;text-decoration:none}.brand-mark{width:29px;height:38px}.brand-name{font-size:25px;letter-spacing:.065em;font-weight:450}.brand-sub{color:var(--muted);font-size:11px;letter-spacing:.09em;line-height:1.3;border-left:1px solid var(--line);padding-left:15px;margin-left:4px}.top-nav{display:flex;gap:28px;align-items:center}.top-nav a{font-size:13px;text-decoration:none;color:var(--muted);padding:8px 0;position:relative}.top-nav a[aria-current],.top-nav a:hover{color:var(--ink)}.top-nav a[aria-current]:after{position:absolute;content:'';height:1px;background:var(--sage-dark);left:0;right:0;bottom:2px}.menu{position:static}.menu>summary{display:flex;align-items:center;gap:12px;list-style:none;font-size:13px;padding:12px 0 12px 16px}.menu>summary::-webkit-details-marker{display:none}.menu-lines{width:24px;display:grid;gap:5px}.menu-lines i{height:1px;background:var(--ink);transition:transform 220ms var(--ease),opacity 150ms}.menu[open] .menu-lines i:first-child{transform:translateY(6px) rotate(45deg)}.menu[open] .menu-lines i:nth-child(2){opacity:0}.menu[open] .menu-lines i:last-child{transform:translateY(-6px) rotate(-45deg)}.menu-panel{position:fixed;inset:86px 0 0;background:var(--paper);overflow:auto;z-index:29;padding:38px var(--gutter) 65px}.menu-open{overflow:hidden}.menu-panel-inner{max-width:1280px;margin:auto}.menu-heading{display:flex;justify-content:space-between;align-items:baseline;gap:24px;border-bottom:1px solid var(--line);padding-bottom:26px;margin-bottom:30px}.menu-heading h2{font-size:36px}.menu-status{font-size:12px;color:var(--muted)}.search-box{display:flex;align-items:center;gap:12px;border-bottom:1px solid var(--line-dark);padding:8px 0;max-width:620px;margin-bottom:34px}.search-box input{width:100%;border:0;background:transparent;padding:9px 2px;color:var(--ink);outline-offset:2px}.search-box input::placeholder{color:var(--muted);opacity:1}.search-result-count{font-size:12px;color:var(--muted);min-width:80px;text-align:right}.menu-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:36px}.menu-group h3{font-size:14px;font-weight:550;padding-bottom:16px;border-bottom:1px solid var(--line);margin-bottom:5px}.menu-group a{display:flex;align-items:baseline;gap:12px;text-decoration:none;padding:12px 0;color:var(--muted);font-size:14px}.menu-group a:hover,.menu-group a[aria-current]{color:var(--ink)}.menu-number{font-size:11px;font-variant-numeric:tabular-nums;color:var(--sage-dark)}.menu-empty{padding:28px 0;color:var(--muted)}
.reading-meta{display:flex;justify-content:space-between;gap:20px;padding-top:25px;color:var(--muted);font-size:11px;letter-spacing:.035em}.reading-meta a{text-decoration:none}.meta-version{display:flex;align-items:center;gap:8px}.status-dot{width:5px;height:5px;border-radius:50%;background:var(--sage-dark);display:inline-block}.reader-layout{display:grid;grid-template-columns:160px minmax(0,1fr);gap:48px;margin-top:58px}.reader-rail{align-self:start;position:sticky;top:126px;font-size:12px;color:var(--muted);border-top:1px solid var(--line);padding-top:16px}.rail-title{color:var(--ink);font-size:12px;display:block;margin-bottom:14px}.reader-rail a{display:block;text-decoration:none;padding:7px 0;line-height:1.45}.reader-rail a:hover{color:var(--ink)}.rail-index{border-top:1px solid var(--line);margin-top:22px;padding-top:16px}.rail-index a{font-size:11px;display:flex;align-items:center;justify-content:space-between}.article{min-width:0}.page-hero{display:grid;grid-template-columns:minmax(0,1.12fr) minmax(240px,.88fr);gap:40px;align-items:start;min-height:340px;padding-bottom:52px;border-bottom:1px solid var(--line)}.hero-copy{padding-top:3px}.hero-lead{font-size:18px;line-height:1.6;color:var(--muted);max-width:56ch;margin-top:26px;margin-bottom:25px}.hero-note{font-size:12px;color:var(--muted);max-width:48ch}.hero-visual{padding-top:8px}.hero-visual figcaption{font-size:11px;line-height:1.5;color:var(--muted);padding-top:12px;text-align:right}.hero-visual figure{margin:0}.hero-visual .scene{width:100%;height:auto;max-height:340px}.page-no{font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums}.chapter-section{--section-start:64px;padding-top:var(--section-start);scroll-margin-top:calc(-1 * var(--section-start))}.section-head{display:flex;justify-content:space-between;align-items:baseline;gap:20px;margin-bottom:28px}.section-head p{font-size:12px;color:var(--muted);margin:0}.section-lead{max-width:68ch;font-size:16px;color:var(--muted);margin:16px 0 28px}.prose{max-width:70ch}.prose p{color:var(--muted)}.text-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:30px}.text-col{border-top:1px solid var(--line);padding-top:22px;min-width:0}.text-col h3{margin:14px 0 16px}.text-col p{color:var(--muted);font-size:14px}.text-col .icon{color:var(--sage-dark);width:27px;height:27px}.text-col a{font-size:13px}.wide-note{display:grid;grid-template-columns:1fr 2fr;gap:40px;padding:30px 34px;background:var(--wash);margin:32px 0}.wide-note h3{font-size:23px}.wide-note p{color:#44503f;margin:0;font-size:14px}.line-list{border-top:1px solid var(--line)}.line-row{display:grid;grid-template-columns:40px minmax(130px,.9fr) minmax(160px,1.8fr) 24px;gap:22px;align-items:baseline;border-bottom:1px solid var(--line);padding:22px 0;text-decoration:none}.line-row .row-no{font-size:13px;color:var(--sage-dark);font-variant-numeric:tabular-nums}.line-row h3{font-size:19px}.line-row p{color:var(--muted);font-size:14px;margin:0}.line-row .icon{align-self:center}.line-row:hover h3{color:var(--sage-dark)}
.action{display:inline-flex;align-items:center;justify-content:space-between;gap:28px;min-height:49px;padding:12px 20px;background:var(--button);border:1px solid var(--button);color:#fff;text-decoration:none;font-size:13px;transition:background 150ms ease}.action:hover{background:#535f61;border-color:#535f61}.action .icon{width:19px;height:19px}.action-outline{background:transparent;border-color:var(--line-dark);color:var(--ink)}.action-outline:hover{background:var(--wash);border-color:var(--line-dark)}.actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}.text-link{display:inline-flex;align-items:center;gap:12px;font-size:13px}.text-link .icon{width:17px;height:17px}.table-scroll-hint{margin:0 0 8px;color:var(--sage-dark);font-size:12px;line-height:1.5}.table-scroll{width:100%;overflow:auto;border-top:1px solid var(--line);scrollbar-width:thin;scrollbar-color:var(--line-dark) var(--paper)}table{width:100%;border-collapse:collapse;font-size:13px;line-height:1.55;text-align:left}th{font-weight:530;color:var(--muted);font-size:11px;padding:14px 15px;vertical-align:bottom;border-bottom:1px solid var(--line-dark)}td{padding:19px 15px;vertical-align:top;border-bottom:1px solid var(--line)}th:first-child,td:first-child{padding-left:0}th:last-child,td:last-child{padding-right:0}.table-scroll table{min-width:590px}.cell-title{display:block;color:var(--ink);font-weight:520;margin-bottom:3px}.cell-sub{font-size:11px;color:var(--muted)}.pending{display:inline-flex;align-items:center;gap:8px;color:var(--muted);font-size:12px;white-space:nowrap}.pending:before{content:'';width:5px;height:5px;background:var(--line-dark);border-radius:50%;flex:none}.result-dash{font-size:22px;color:var(--muted);font-weight:400}.target-note{font-size:12px;color:var(--muted);margin-top:14px}.table-highlight{background:var(--wash)}.caption{font-size:11px;color:var(--muted);line-height:1.5;margin-top:12px}.tabs,.filters{display:flex;flex-wrap:wrap;gap:0;border-bottom:1px solid var(--line);margin:0 0 24px}.tab,.filter{border:0;background:transparent;min-height:44px;padding:10px 18px;color:var(--muted);font-size:13px;position:relative}.tab:first-child,.filter:first-child{padding-left:0}.tab[aria-selected=true],.filter[aria-pressed=true]{color:var(--ink)}.tab[aria-selected=true]:after,.filter[aria-pressed=true]:after{content:'';position:absolute;bottom:-1px;height:2px;background:var(--sage-dark);left:0;right:0}.tab:hover,.filter:hover{color:var(--ink)}.canvas-grid{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));border-top:1px solid var(--line);border-left:1px solid var(--line)}.canvas-cell{padding:24px;min-height:180px;border-bottom:1px solid var(--line);border-right:1px solid var(--line);grid-column:span 2}.canvas-cell:nth-child(n+7){grid-column:span 3}.canvas-cell h3{font-size:15px;margin-bottom:13px}.canvas-cell p{font-size:13px;color:var(--muted);margin:0}.canvas-cell.focus{background:var(--wash)}.diagram-flow{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));border-block:1px solid var(--line);margin:26px 0}.flow-node{padding:22px 16px;border-right:1px solid var(--line);font-size:13px;position:relative}.flow-node:last-child{border:0}.flow-node strong{font-size:14px;display:block;font-weight:520;margin:12px 0 7px}.flow-node span{font-size:11px;color:var(--muted)}.flow-node .icon{color:var(--sage-dark)}
.home-main{padding-top:50px}.home-hero{display:grid;grid-template-columns:minmax(0,1fr) minmax(320px,1fr);gap:55px;align-items:center;padding-bottom:38px;min-height:520px}.home-hero h1{font-size:clamp(46px,5.3vw,77px);line-height:1.045;letter-spacing:-.035em;max-width:none}.home-hero .hero-lead{max-width:40ch;font-size:18px;margin-top:28px}.home-hero .hero-visual .scene{max-height:420px}.home-caption{display:flex;justify-content:space-between;gap:24px;padding:18px 0;border-block:1px solid var(--line);color:var(--muted);font-size:12px}.home-caption strong{font-size:13px;font-weight:500;color:var(--ink)}.home-chapters{padding:64px 0 18px}.chapter-index{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:34px}.index-group{border-top:1px solid var(--line-dark);padding-top:20px}.index-group h3{font-size:21px;line-height:1.25;margin-bottom:22px}.index-group a{display:flex;gap:12px;align-items:baseline;padding:10px 0;font-size:13px;text-decoration:none;color:var(--muted);line-height:1.4}.index-group a:hover{color:var(--ink)}.index-group small{font-variant-numeric:tabular-nums;font-size:10px;color:var(--sage-dark);min-width:17px}.home-path{padding-block:65px 20px}.home-path .text-col{border-top:0;border-bottom:1px solid var(--line);padding-bottom:28px}.home-path h3{margin-top:0;font-size:23px}.home-path .section-head{margin-bottom:34px}
.phase-strip{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-block:1px solid var(--line);margin:28px 0}.phase{padding:26px 21px;border-right:1px solid var(--line);position:relative}.phase:first-child{padding-left:0}.phase:last-child{border:0}.phase strong{display:block;font-size:34px;font-weight:440;letter-spacing:-.025em;font-variant-numeric:tabular-nums;margin-bottom:12px}.phase span{font-size:12px;color:var(--muted)}.phase-step{font-size:10px;letter-spacing:.06em;display:block;color:var(--sage-dark);margin-bottom:15px}.phase.is-selected{background:var(--wash)}.layer-stage{position:relative;display:grid;grid-template-columns:minmax(0,1.3fr) minmax(220px,.7fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line);gap:35px;padding:36px 0}.layer-controls{padding-top:18px}.layer-controls p{font-size:13px;color:var(--muted)}.layer-switch{display:flex;align-items:center;justify-content:space-between;width:100%;text-align:left;border:0;border-bottom:1px solid var(--line);background:transparent;padding:15px 0;font-size:13px}.layer-switch .switch-mark{width:25px;height:13px;border:1px solid var(--muted);position:relative}.switch-mark:after{position:absolute;content:'';width:7px;height:7px;top:2px;left:2px;background:var(--muted);transition:transform 180ms var(--ease),background 180ms}.layer-switch[aria-pressed=true] .switch-mark:after{transform:translateX(11px);background:var(--sage-dark)}.model-stage-svg{width:100%;max-height:390px}.model-stage-svg [data-layer]{transition:opacity 220ms,transform 380ms var(--ease);transform-box:fill-box;transform-origin:center}.model-stage-svg [data-layer].layer-hidden{opacity:0;pointer-events:none}.model-stage-svg.is-exploded [data-layer=roof]{transform:translateY(-42px)}.model-stage-svg.is-exploded [data-layer=systems]{transform:translateY(-18px)}.model-mode-title{font-size:12px;color:var(--muted);margin-top:8px}.model-note{font-size:12px;color:var(--muted);padding-top:15px}.target-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin:24px 0}.target-cell{padding:26px 24px;border-right:1px solid var(--line)}.target-cell:first-child{padding-left:0}.target-cell:last-child{border:0}.target-cell h3{font-size:13px;font-weight:520;margin-bottom:15px}.target-value{font-size:34px;line-height:1.25;font-weight:430;letter-spacing:-.025em;font-variant-numeric:tabular-nums}.target-cell p{font-size:12px;color:var(--muted);margin:14px 0 0}.cashflow{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;border-bottom:1px solid var(--line);padding:20px 0}.cash-step{position:relative;border-top:1px solid var(--line-dark);padding:25px 24px 18px 0}.cash-step:before{content:'';width:5px;height:5px;border-radius:50%;background:var(--sage-dark);position:absolute;top:-3px;left:0}.cash-step h3{font-size:16px;margin-bottom:12px}.cash-step p{font-size:12px;color:var(--muted)}.risk-list{border-top:1px solid var(--line)}.risk-item{display:grid;grid-template-columns:30px 1fr 1.5fr;gap:20px;border-bottom:1px solid var(--line);padding:22px 0}.risk-item .icon{color:var(--sage-dark);margin-top:3px}.risk-item h3{font-size:18px}.risk-item p{font-size:13px;color:var(--muted);margin:0}.timeline{border-top:1px solid var(--line)}.timeline-step{display:grid;grid-template-columns:45px minmax(140px,.8fr) minmax(180px,1.8fr);gap:25px;padding:24px 0;border-bottom:1px solid var(--line)}.timeline-step .step-number{font-variant-numeric:tabular-nums;font-size:22px;color:var(--sage-dark);line-height:1.2}.timeline-step h3{font-size:17px}.timeline-step p{font-size:13px;color:var(--muted);margin:0}.scope-list{border-top:1px solid var(--line)}.scope-item{border-bottom:1px solid var(--line)}.scope-item>summary{list-style:none;display:grid;grid-template-columns:75px minmax(0,1fr) 24px;gap:20px;padding:20px 0;align-items:center}.scope-item>summary::-webkit-details-marker{display:none}.scope-code{font-size:10px;color:var(--muted);letter-spacing:.035em}.scope-item>summary h3{font-size:17px;font-weight:460}.scope-item>summary .icon{width:18px;height:18px;transition:transform 180ms var(--ease)}.scope-item[open]>summary .icon{transform:rotate(90deg)}.scope-body{padding:0 44px 22px 95px;font-size:13px;color:var(--muted);max-width:80ch;overflow-wrap:anywhere}.scope-body p{margin-bottom:14px}.scope-body ul{margin:12px 0 0;padding-left:18px}.scope-body li{padding-block:6px}.scope-body li strong{color:var(--ink);font-weight:500}.scope-footer{font-size:11px;color:var(--muted);margin-top:20px}.scope-page-link{display:block;font-size:12px;color:var(--sage-dark);margin-top:12px}.criteria-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));border-top:1px solid var(--line);border-left:1px solid var(--line)}.criterion{padding:26px;border-bottom:1px solid var(--line);border-right:1px solid var(--line)}.criterion-head{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:19px}.criterion-head .icon{color:var(--sage-dark)}.criterion h3{font-size:19px;margin-bottom:11px}.criterion p{font-size:13px;color:var(--muted)}.criteria-foot{font-size:12px;display:flex;justify-content:space-between;align-items:center;border-top:1px solid var(--line);padding-top:14px;margin-top:20px}.criteria-foot a{color:var(--sage-dark)}.decision-pair{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.decision-block{padding:32px 30px;min-width:0}.decision-block:first-child{padding-left:0;border-right:1px solid var(--line)}.decision-block:last-child{background:var(--wash)}.decision-block h3{font-size:27px;margin-bottom:18px}.decision-block p{font-size:14px;color:var(--muted)}.decision-block:last-child p{color:#44503f}.decision-block ul{padding-left:17px;font-size:13px;color:var(--muted);margin-bottom:0}.decision-block li{padding-block:5px}.document-list{border-top:1px solid var(--line)}.document-row{display:grid;grid-template-columns:28px minmax(0,1fr) 100px 24px;gap:20px;padding:22px 0;border-bottom:1px solid var(--line);text-decoration:none;align-items:center}.document-row .icon{color:var(--sage-dark)}.document-row h3{font-size:16px}.document-row p{font-size:12px;color:var(--muted);margin:7px 0 0}.document-row .doc-type{font-size:11px;color:var(--muted)}
.chapter-close{display:flex;justify-content:space-between;gap:20px;margin-top:68px;padding-block:28px;border-top:1px solid var(--line)}.chapter-close>a{display:flex;align-items:center;gap:17px;text-decoration:none;max-width:48%;font-size:14px}.chapter-close>a:last-child{text-align:right;margin-left:auto}.chapter-close small{display:block;color:var(--muted);font-size:10px;margin-bottom:5px}.chapter-close>a:hover{color:var(--sage-dark)}.chapter-close .prev-icon{transform:rotate(180deg)}.footer{margin-top:48px;padding:30px 0 36px;border-top:1px solid var(--line)}.footer-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;color:var(--muted);font-size:11px}.footer-brand{font-size:19px;letter-spacing:.07em;color:var(--ink)}.footer-inner a{text-decoration:none}.reading-bar{position:fixed;top:84px;left:0;height:2px;width:100%;transform:scaleX(0);transform-origin:left;background:var(--sage-dark);z-index:31;pointer-events:none}.home-model-links{display:flex;justify-content:space-between;gap:18px;border-bottom:1px solid var(--line);padding:15px 0;margin-top:4px}.home-model-links a{text-decoration:none;color:var(--muted);font-size:11px}.home-model-links a:hover{color:var(--sage-dark)}.mini-scope-label{font-size:10px;color:var(--muted);padding-top:8px}.no-results{padding:26px 0;color:var(--muted);font-size:14px}.local-search{margin-top:18px;margin-bottom:30px}.phase-select{display:flex;align-items:center;gap:14px;font-size:13px;margin:20px 0 28px}.phase-select select{background:var(--paper);border:1px solid var(--line-dark);border-radius:0;padding:11px 30px 11px 13px;color:var(--ink);max-width:100%}.article .page-hero .hero-visual{margin:0}.note-line{border-top:1px solid var(--line);padding-top:16px;color:var(--muted);font-size:12px}.scene .animated-sheet{transform-box:fill-box;transform-origin:center;animation:sheet-assemble 900ms var(--ease) 1 both}.scene .animated-sheet:nth-child(2){animation-delay:50ms}.scene .animated-sheet:nth-child(3){animation-delay:100ms}.scene .animated-sheet:nth-child(4){animation-delay:150ms}@keyframes sheet-assemble{from{transform:translateY(-22px);opacity:.3}to{transform:translateY(0);opacity:1}}.menu[open] .menu-panel{animation:menu-open 240ms var(--ease) both}@keyframes menu-open{from{clip-path:inset(0 0 100% 0)}to{clip-path:inset(0 0 0 0)}}@view-transition{navigation:auto}
/* Chapter identity dissolves; all links and controls remain live during navigation. */
main:focus-visible,.chapter-section:focus-visible{outline:none}
:root{view-transition-name:none}
main h1{view-transition-name:chapter-title}
main .hero-lead{view-transition-name:chapter-lead}
main .hero-visual{view-transition-name:chapter-figure}
::view-transition{pointer-events:none}
::view-transition-group(*){animation:none}
::view-transition-old(*){animation:page-out 100ms ease both;mix-blend-mode:normal}
::view-transition-new(*){animation:page-in 160ms ease-out both;mix-blend-mode:normal}
@keyframes page-out{to{opacity:0}}
@keyframes page-in{from{opacity:0}to{opacity:1}}
@media(min-width:1600px){h1{font-size:70px}.reader-layout{grid-template-columns:180px minmax(0,1fr);gap:62px}.home-hero h1{font-size:79px}}
@media(max-width:1180px){.top-nav{gap:18px}.brand-sub{display:none}.reader-layout{grid-template-columns:130px minmax(0,1fr);gap:32px}.page-hero{gap:26px;grid-template-columns:minmax(0,1.12fr) minmax(200px,.88fr)}h1{font-size:clamp(36px,4.8vw,56px)}.hero-lead{font-size:16px}.chapter-index{gap:25px}.home-hero{gap:30px}.target-value{font-size:28px}.layer-stage{gap:22px}.diagram-flow{grid-template-columns:repeat(3,minmax(0,1fr))}.flow-node:nth-child(3){border:0}.flow-node:nth-child(n+4){border-top:1px solid var(--line)}.canvas-cell{padding:20px}.menu-grid{gap:26px}}
@media(max-width:900px){.top-nav{display:none}.reader-layout{grid-template-columns:minmax(0,1fr);margin-top:38px}.reader-rail{display:none}.reading-meta{padding-top:21px}.page-hero{grid-template-columns:minmax(0,1.1fr) minmax(230px,.9fr);min-height:310px}.home-hero{grid-template-columns:1fr 1fr;min-height:440px;padding-bottom:30px}.home-hero h1{font-size:clamp(38px,5.3vw,52px)}.home-main{padding-top:32px}.chapter-index{grid-template-columns:repeat(2,minmax(0,1fr));row-gap:32px}.menu-grid{grid-template-columns:repeat(2,minmax(0,1fr));row-gap:25px}.text-grid{gap:22px}.chapter-section{--section-start:52px}.wide-note{gap:25px;padding:26px}.line-row{grid-template-columns:30px 1fr 1.45fr 22px;gap:17px}.target-value{font-size:31px}.hero-visual .scene{max-height:290px}.section-head p{max-width:140px;text-align:right}.home-caption{flex-wrap:wrap}.layer-stage{grid-template-columns:1.3fr .7fr}.menu-panel{padding-top:25px}.footer-inner{align-items:flex-start}.brand-name{font-size:23px}.header-inner{height:76px}.menu-panel{top:77px}.reading-bar{top:75px}html{scroll-padding-top:104px}}
@media(max-width:600px){:root{--gutter:22px}.header-inner{height:69px;gap:12px}.brand-name{font-size:21px}.brand-mark{width:23px;height:29px}.brand{gap:9px}.menu>summary{font-size:11px;gap:12px;padding-left:5px}.menu-lines{width:21px}.menu-panel{top:70px;padding:23px 22px 45px}.reading-bar{top:68px}.reading-meta{font-size:10px;gap:12px}.meta-version .version-date{display:none}.reader-layout{margin-top:31px}.page-hero{display:flex;flex-direction:column;gap:24px;padding-bottom:32px;min-height:0}.hero-copy{width:100%}h1{font-size:42px;line-height:1.1;letter-spacing:-.031em}h2{font-size:29px}h3{font-size:21px}.hero-lead{font-size:16px;margin-top:22px;margin-bottom:20px}.hero-note{font-size:11px}.hero-visual{width:100%;max-width:490px;padding-top:0}.hero-visual .scene{max-height:260px}.hero-visual figcaption{text-align:left;padding-top:4px}.chapter-section{--section-start:43px}.section-head{align-items:flex-start;margin-bottom:23px;gap:12px}.section-head p{font-size:10px;max-width:105px}.section-lead{font-size:15px}.text-grid{grid-template-columns:1fr;gap:20px}.text-col{padding-top:21px}.text-col h3{margin:12px 0}.text-col p{font-size:14px}.wide-note{grid-template-columns:1fr;gap:16px;padding:24px;margin:27px 0}.wide-note h3{font-size:23px}.line-row{grid-template-columns:25px minmax(0,1fr) 22px;gap:12px;padding:19px 0}.line-row h3{font-size:18px}.line-row p{grid-column:2;grid-row:2;font-size:13px}.line-row .icon{grid-column:3;grid-row:1}.line-row .row-no{font-size:11px}.home-main{padding-top:31px}.home-hero{grid-template-columns:1fr;gap:28px;min-height:0}.home-hero h1{font-size:clamp(34px,10.3vw,50px);max-width:none}.home-hero .hero-lead{font-size:16px;max-width:40ch;margin-top:23px}.home-hero .hero-visual .scene{max-height:295px}.home-model-links{gap:13px}.home-caption{display:grid;grid-template-columns:1fr 1fr;gap:12px;padding:16px 0;font-size:11px}.home-caption>span:first-child{grid-column:span 2}.home-chapters{padding-top:43px}.chapter-index{gap:26px 21px}.index-group h3{font-size:21px}.index-group a{font-size:12px;padding:9px 0;gap:8px}.index-group small{min-width:14px}.home-path{padding-top:46px}.home-path .text-col{padding-top:0;padding-bottom:15px}.home-path h3{font-size:23px}.action{padding-inline:15px;font-size:12px;gap:22px}.menu-heading{margin-bottom:21px;padding-bottom:21px;align-items:flex-start}.menu-heading h2{font-size:29px}.menu-status{font-size:10px;max-width:95px;text-align:right}.menu-grid{gap:25px 20px}.menu-group h3{font-size:13px}.menu-group a{font-size:12px;gap:8px;padding:10px 0}.search-box{margin-bottom:22px}.search-result-count{font-size:10px;min-width:56px}.menu-number{font-size:10px}.phase-strip{grid-template-columns:repeat(2,minmax(0,1fr))}.phase{padding:23px 20px}.phase:first-child{padding-left:0}.phase:nth-child(2){border-right:0}.phase:nth-child(n+3){border-top:1px solid var(--line)}.phase:nth-child(3){padding-left:0}.phase strong{font-size:31px}.phase span{font-size:11px}.target-grid{grid-template-columns:1fr}.target-cell{padding:23px 0;border-right:0;border-bottom:1px solid var(--line);display:grid;grid-template-columns:1fr 1fr;gap:4px 20px}.target-cell:last-child{border:0}.target-cell h3{margin-bottom:0;align-self:start;padding-top:4px;font-size:12px}.target-value{font-size:29px}.target-cell p{grid-column:2;margin-top:5px;font-size:11px}.canvas-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.canvas-cell,.canvas-cell:nth-child(n+7){grid-column:span 1;min-height:165px;padding:17px}.canvas-cell:last-child{grid-column:span 2;min-height:130px}.diagram-flow{grid-template-columns:repeat(2,minmax(0,1fr))}.flow-node{padding:19px 15px}.flow-node:nth-child(even){border-right:0}.flow-node:nth-child(3){border-right:1px solid var(--line);border-top:1px solid var(--line)}.flow-node:nth-child(5){grid-column:span 2;border-right:0}.layer-stage{grid-template-columns:1fr;gap:4px;padding:25px 0}.model-stage-svg{max-height:300px}.layer-controls{padding-top:8px}.layer-controls>p{font-size:13px}.model-note{font-size:11px}.cashflow{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px 0}.cash-step{padding-right:20px}.risk-item{grid-template-columns:24px 1fr;gap:13px}.risk-item h3{font-size:18px}.risk-item p{grid-column:2}.timeline-step{grid-template-columns:30px 1fr;gap:12px}.timeline-step h3{font-size:18px}.timeline-step p{grid-column:2;font-size:13px}.timeline-step .step-number{font-size:20px}.scope-item>summary{grid-template-columns:62px minmax(0,1fr) 19px;gap:11px;padding:18px 0}.scope-item>summary h3{font-size:15px}.scope-code{font-size:9px}.scope-body{padding:0 12px 20px;font-size:15px}.criteria-grid{grid-template-columns:1fr}.criterion{padding:24px 22px}.decision-pair{grid-template-columns:1fr}.decision-block{padding:25px 24px}.decision-block:first-child{padding-left:0;border-right:0;border-bottom:1px solid var(--line)}.document-row{grid-template-columns:24px minmax(0,1fr) 19px;gap:13px}.document-row .doc-type{display:none}.document-row h3{font-size:15px}.chapter-close{margin-top:46px;padding-block:22px}.chapter-close>a{gap:10px;font-size:12px;max-width:49%}.chapter-close .icon{width:18px;height:18px}.footer{margin-top:29px;padding:24px 0}.footer-inner{flex-wrap:wrap;gap:15px;font-size:10px}.footer-brand{font-size:19px}.footer-version{width:100%}.local-search{margin-block:18px 24px}.tab,.filter{font-size:12px;padding:10px 14px}.phase-select{flex-wrap:wrap;gap:10px}.home-model-links a{font-size:10px}.phase-select select{font-size:13px;flex:1;min-width:170px}.table-scroll{margin-right:0}th{font-size:10px}td{font-size:12px}html{scroll-padding-top:90px}}
@media(max-width:359px){:root{--gutter:18px}.home-hero h1{font-size:34px}h1{font-size:37px}.brand-name{font-size:19px}.menu>summary>span:first-child{font-size:10px}.target-value{font-size:26px}.chapter-index{gap:23px 17px}.index-group h3{font-size:18px}.menu-group a{font-size:11px}.scope-item>summary{grid-template-columns:57px minmax(0,1fr) 17px;gap:9px}.section-head{display:block}.section-head p{margin-top:10px;text-align:left;max-width:none}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.scene .animated-sheet,.menu[open] .menu-panel{animation:none}.model-stage-svg [data-layer],.menu-lines i,.switch-mark:after{transition:opacity 100ms,color 100ms}@view-transition{navigation:none}::view-transition-group(*),::view-transition-old(*),::view-transition-new(*){animation:none}}
html:not(.js) .tabs,html:not(.js) .filters,html:not(.js) .layer-controls,html:not(.js) .search-box,html:not(.js) .phase-select{display:none}
@media print{body{background:#fff;font-size:11pt}.site-header,.reader-rail,.reading-meta,.reading-bar,.chapter-close,.footer,.tabs,.filters,.layer-controls,.phase-select,.search-box,.local-search,.actions,.table-scroll-hint,[data-scope-empty],[data-scope-count]{display:none!important}.wrap{max-width:none;padding:0}.reader-layout{display:block;margin:0}.page-hero{min-height:0;padding-bottom:24px}.home-hero{min-height:0;padding-top:0}.chapter-section{padding-top:28px;break-inside:avoid}h1{font-size:32pt}h2{font-size:22pt}h3{font-size:14pt}.hero-lead{font-size:12pt}[data-panel-group],[data-scope-item]{display:block!important}tr[data-filter-row="equipment"]{display:table-row!important}.scope-item::details-content{display:block!important;content-visibility:visible!important}.scope-item>.scope-body{display:block!important}.scope-item>summary{display:block}.scope-code{display:block}.table-scroll{overflow:visible}table{font-size:9pt;min-width:0!important}.scene .animated-sheet{animation:none}.model-stage-svg [data-layer]{opacity:1!important;transform:none!important}a{text-decoration:none}.wide-note{background:#eee}.text-grid{display:grid;grid-template-columns:repeat(3,1fr)}}

.scene-key{display:none}.scene-key-title{display:block;font-size:12px;line-height:1.5;color:var(--muted);margin-bottom:7px}.scene-key ol{list-style:none;counter-reset:scene-order;display:flex;flex-wrap:wrap;gap:7px 13px;padding:0;margin:0;font-size:13px;line-height:1.5;color:var(--ink)}.scene-key li{counter-increment:scene-order;display:flex;gap:6px;white-space:nowrap}.scene-key li:before{content:counter(scene-order);color:var(--sage-dark);font-variant-numeric:tabular-nums}.scene-key p{font-size:13px;line-height:1.5;margin:0}@media(max-width:900px){.scene-key{display:block;margin-top:12px;margin-bottom:9px;text-align:left}.hero-visual .scene text{display:none}}