:root{--paper:#f2efe5;--paper2:#e9e5da;--ink:#111713;--muted:#586159;--line:#bdc5ba;--pine:#13382d;--green:#6f9d73;--acid:#b8d65c;--rust:#a64d32;--white:#fbfcf7;--radius:2px;--max:1240px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:Arial,Helvetica,sans-serif;line-height:1.55}a{color:inherit;text-decoration-thickness:1px;text-underline-offset:3px}a:hover{text-decoration-thickness:2px}.bku-frame{width:min(var(--max),calc(100% - 40px));margin-inline:auto}.bku-skip{position:absolute;left:-9999px;top:0;background:var(--acid);color:var(--ink);padding:10px 14px;z-index:20}.bku-skip:focus{left:10px;top:10px}.bku-icu-bar{background:var(--ink);color:var(--white);font-size:.78rem;letter-spacing:.04em}.bku-icu-bar__inner{min-height:46px;display:flex;align-items:center;justify-content:space-between;gap:24px}.bku-icu-brand{font-weight:800;text-decoration:none;text-transform:uppercase;letter-spacing:.08em}.bku-icu-bar nav{display:flex;align-items:center;gap:18px}.bku-icu-bar nav span{border-left:1px solid #5c675f;padding-left:18px;color:#b9c1ba}.bku-header{border-bottom:1px solid var(--ink);background:rgba(242,239,229,.97)}.bku-breadcrumbs{display:flex;gap:8px;padding-top:18px;color:var(--muted);font-size:.76rem;text-transform:uppercase;letter-spacing:.08em}.bku-mast{display:flex;align-items:end;justify-content:space-between;gap:24px;padding:18px 0 22px}.bku-mast>p{max-width:430px;text-align:right;color:var(--muted);font-family:"Courier New",monospace;font-size:.8rem}.bku-label,.bku-index,.bku-card>span,.bku-timeline span{font-family:"Courier New",monospace;font-size:.74rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}.bku-wordmark{display:block;font-size:clamp(2.25rem,7vw,6.3rem);line-height:.78;font-weight:900;letter-spacing:-.07em;text-decoration:none}.bku-wordmark i{font-style:normal;font-weight:400;color:var(--pine)}.bku-nav{display:flex;overflow:auto;border-top:1px solid var(--line);scrollbar-width:thin}.bku-nav a{white-space:nowrap;padding:13px 14px 12px 0;margin-right:24px;text-decoration:none;font-size:.82rem;font-weight:700}.bku-nav a[aria-current=page]{color:var(--rust)}.bku-mobile-nav{display:none}.bku-page-intro{padding:clamp(46px,8vw,100px) 0 50px;border-bottom:1px solid var(--ink)}.bku-page-intro h1{max-width:980px;margin:.18em 0 .35em;font-size:clamp(2.7rem,7.5vw,7.4rem);line-height:.88;letter-spacing:-.065em}.bku-page-intro>p:last-child{max-width:760px;font-size:clamp(1.05rem,2vw,1.35rem);color:#354039}.bku-section{padding:72px 0;border-bottom:1px solid var(--ink)}.bku-section--dark{background:var(--pine);color:var(--white);margin-inline:calc(50% - 50vw);padding-inline:max(20px,calc((100vw - var(--max))/2));border:0}.bku-section--dark .bku-label,.bku-section--dark .bku-index,.bku-section--dark .bku-section-head p{color:#c7d3ca}.bku-section-head{display:grid;grid-template-columns:180px 1fr;gap:20px 44px;margin-bottom:34px}.bku-section-head h2{grid-column:2;margin:0;font-size:clamp(2rem,4.8vw,4.6rem);line-height:.96;letter-spacing:-.045em;max-width:900px}.bku-section-head>p:last-child{grid-column:2;max-width:720px;margin:0;color:var(--muted)}.bku-hero-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:42px;align-items:center;padding:56px 0 72px;border-bottom:1px solid var(--ink)}.bku-hero-copy h2{font-size:clamp(2rem,4vw,4.2rem);line-height:.96;letter-spacing:-.04em;margin:.25em 0}.bku-hero-copy>p:not(.bku-label){color:var(--muted);max-width:560px}.bku-bike-diagram{background:var(--white);border:1px solid var(--ink);padding:16px}.bku-bike-diagram img,.bku-anatomy-large{display:block;width:100%;height:auto}.bku-caption{font-family:"Courier New",monospace;font-size:.7rem;color:var(--muted);letter-spacing:.06em;text-transform:uppercase}.bku-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}.bku-button{appearance:none;border:1px solid var(--ink);background:transparent;color:var(--ink);padding:12px 16px;font:inherit;font-weight:800;text-decoration:none;cursor:pointer}.bku-button--primary{background:var(--ink);color:var(--white)}.bku-button:hover{background:var(--acid);color:var(--ink)}.bku-card-grid{display:grid;gap:12px}.bku-card-grid--4{grid-template-columns:repeat(4,1fr)}.bku-card-grid--3{grid-template-columns:repeat(3,1fr)}.bku-card{display:block;min-height:220px;padding:22px;border:1px solid var(--ink);background:rgba(255,255,255,.23);text-decoration:none}.bku-card:hover{background:var(--white)}.bku-card h2,.bku-card h3{font-size:1.55rem;line-height:1.05;margin:.7em 0}.bku-card p{color:var(--muted)}.bku-card--live{border-top:8px solid var(--acid)}.bku-card--future{opacity:.72}.bku-relationship{display:flex;align-items:center;flex-wrap:wrap;gap:10px;margin:40px 0 10px;font-family:"Courier New",monospace}.bku-relationship span{border:1px solid #8ca497;padding:12px}.bku-relationship b{color:var(--acid)}.bku-feature-split{display:grid;grid-template-columns:1fr 1fr;gap:60px}.bku-feature-split h3{font-size:2.3rem;line-height:1}.bku-text-link{font-weight:800}.bku-metric-grid{display:grid;grid-template-columns:1fr 1fr;border:1px solid var(--ink)}.bku-metric-grid div{padding:25px;border:solid var(--ink);border-width:0 1px 1px 0}.bku-metric-grid strong{display:block;font-size:3rem;line-height:1}.bku-metric-grid span{font-size:.8rem;color:var(--muted)}.bku-discovery{display:flex;align-items:center;gap:20px;flex-wrap:wrap}.bku-discovery p{color:var(--muted)}.bku-type-table{overflow:auto;border:1px solid var(--ink)}table{width:100%;border-collapse:collapse;min-width:800px}th,td{text-align:left;vertical-align:top;padding:15px;border-bottom:1px solid var(--line);border-right:1px solid var(--line)}th{font-family:"Courier New",monospace;font-size:.75rem;text-transform:uppercase;background:var(--ink);color:var(--white)}.bku-note{max-width:820px;border-left:4px solid var(--green);padding:12px 16px;color:var(--muted);background:rgba(255,255,255,.34)}.bku-system-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:0;border:1px solid var(--ink)}.bku-system-grid article{padding:30px;border:solid var(--ink);border-width:0 1px 1px 0}.bku-system-grid h2{font-size:2rem;margin:.3em 0}.bku-anatomy-layout{display:grid;grid-template-columns:1.5fr .7fr;gap:40px;align-items:start}.bku-anatomy-layout>div:first-child{border:1px solid var(--ink);background:var(--white);padding:18px}.bku-steps{padding-left:20px}.bku-steps li{margin:0 0 18px}.bku-timeline{border-left:2px solid var(--ink);margin-left:12px}.bku-timeline>div{position:relative;padding:0 0 45px 42px}.bku-timeline>div:before{content:"";position:absolute;width:13px;height:13px;border-radius:50%;background:var(--acid);border:2px solid var(--ink);left:-8px;top:3px}.bku-timeline h2{font-size:2rem;margin:.25em 0}.bku-process{display:grid;grid-template-columns:repeat(5,1fr);border:1px solid var(--ink)}.bku-process>div{padding:20px;border-right:1px solid var(--ink)}.bku-process span{font-family:"Courier New",monospace;color:var(--rust)}.bku-process h2{font-size:1.3rem}.bku-warning{margin-top:28px;padding:20px;background:#f5dfd6;border-left:6px solid var(--rust);max-width:900px}.bku-calculator{display:grid;grid-template-columns:.9fr 1.1fr;gap:30px;align-items:start}.bku-form{display:grid;grid-template-columns:1fr 1fr;gap:16px}.bku-field{display:flex;flex-direction:column;gap:7px}.bku-field label{font-weight:800}.bku-field input{width:100%;border:1px solid var(--ink);background:var(--white);padding:14px;font:inherit;font-size:1.15rem}.bku-results{display:grid;grid-template-columns:1fr 1fr;border:1px solid var(--ink);background:var(--pine);color:var(--white)}.bku-results div{padding:22px;border:solid #60786d;border-width:0 1px 1px 0}.bku-results span{display:block;font-family:"Courier New",monospace;font-size:.7rem;letter-spacing:.08em;color:#c6d4cc}.bku-results strong{display:block;font-size:2.2rem;margin-top:4px}.bku-formula{margin-top:36px;max-width:850px}.bku-compare{display:grid;grid-template-columns:1fr auto 1fr;gap:30px;align-items:center}.bku-compare>div:not(.bku-vs){border:1px solid var(--ink);padding:28px;min-height:300px}.bku-vs{font-family:"Courier New",monospace;font-weight:800}.bku-glossary{display:grid;grid-template-columns:1fr 1fr;gap:0;border:1px solid var(--ink)}.bku-glossary>div{padding:24px;border:solid var(--line);border-width:0 1px 1px 0}.bku-glossary dt{font-size:1.6rem;font-weight:900}.bku-glossary dd{margin:8px 0 0;color:var(--muted)}.bku-footer{background:var(--ink);color:var(--white);padding:44px 0}.bku-footer__grid{display:grid;grid-template-columns:1fr auto auto;gap:30px;align-items:start}.bku-footer nav{display:grid;gap:8px}.bku-footer .bku-caption{color:#aab3ac}.bku-footer p{color:#c7cec8}.bku-main:focus{outline:none}@media(max-width:900px){.bku-icu-bar nav a,.bku-icu-bar nav span{display:none}.bku-mast{align-items:start;flex-direction:column}.bku-mast>p{text-align:left;margin:0}.bku-nav{display:none}.bku-mobile-nav{display:block;border-top:1px solid var(--line);padding:12px 0}.bku-mobile-nav summary{font-weight:800;cursor:pointer}.bku-mobile-nav nav{display:grid;padding:12px 0}.bku-mobile-nav a{padding:8px 0}.bku-hero-grid,.bku-feature-split,.bku-anatomy-layout,.bku-calculator{grid-template-columns:1fr}.bku-card-grid--4,.bku-card-grid--3{grid-template-columns:1fr 1fr}.bku-process{grid-template-columns:1fr}.bku-process>div{border-right:0;border-bottom:1px solid var(--ink)}.bku-footer__grid{grid-template-columns:1fr 1fr}.bku-footer__grid>.bku-caption{grid-column:1/-1}.bku-section-head{grid-template-columns:1fr}.bku-section-head h2,.bku-section-head>p:last-child{grid-column:1}.bku-compare{grid-template-columns:1fr}.bku-vs{text-align:center}.bku-glossary{grid-template-columns:1fr}}@media(max-width:560px){.bku-frame{width:min(var(--max),calc(100% - 24px))}.bku-card-grid--4,.bku-card-grid--3,.bku-form,.bku-results,.bku-metric-grid,.bku-system-grid{grid-template-columns:1fr}.bku-page-intro{padding-top:48px}.bku-page-intro h1{font-size:clamp(2.75rem,16vw,5rem)}.bku-wordmark{font-size:clamp(2.55rem,15vw,4.3rem)}.bku-section{padding:50px 0}.bku-card{min-height:0}.bku-footer__grid{grid-template-columns:1fr}.bku-relationship{align-items:flex-start;flex-direction:column}.bku-relationship b{transform:rotate(90deg);margin-left:15px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}
/* BKU002 canonical graph expansion */
.bku-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}.bku-button{display:inline-flex;align-items:center;justify-content:center;background:var(--ink);color:var(--paper);border:1px solid var(--ink);padding:14px 18px;font:700 .75rem var(--mono);letter-spacing:.06em;text-transform:uppercase;text-decoration:none}.bku-button--light{background:transparent;color:var(--ink)}.bku-page-intro--split{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(300px,.85fr);gap:48px;align-items:center}.bku-page-intro--split img{width:100%;border:1px solid var(--ink);background:var(--paper-2);padding:18px}.bku-card--link{display:block;color:inherit;text-decoration:none}.bku-card--link:hover,.bku-card--link:focus-visible{background:var(--acid);outline:3px solid var(--ink);outline-offset:-3px}.bku-card__cta{display:block;margin-top:auto;padding-top:20px;font:.72rem var(--mono);text-transform:uppercase}.bku-card__state{display:block;margin-top:auto;padding-top:20px;color:var(--muted);font:.7rem var(--mono);font-style:normal;text-transform:uppercase}.bku-subsection{padding:32px 0 48px;border-top:1px solid var(--line)}.bku-subsection__head{display:grid;grid-template-columns:180px 1fr;gap:20px;align-items:end;margin-bottom:22px}.bku-subsection__head span{font:.72rem var(--mono);color:var(--rust)}.bku-subsection__head h2{margin:0;font-size:2rem}.bku-geometry-list{border-top:1px solid var(--ink)}.bku-geometry-row{display:grid;grid-template-columns:240px minmax(0,1fr) minmax(260px,.7fr) 130px;gap:24px;padding:26px 0;border-bottom:1px solid var(--line);align-items:start}.bku-geometry-row span{font:.68rem var(--mono);color:var(--rust)}.bku-geometry-row h2{margin:.25rem 0 0;font-size:1.45rem}.bku-geometry-row p{margin:0}.bku-geometry-row>a,.bku-geometry-row>em{font:.68rem var(--mono);text-transform:uppercase;font-style:normal}.bku-mechanism-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.bku-mechanism{border:1px solid var(--ink);background:var(--paper-2);padding:26px}.bku-mechanism>span,.bku-mechanism__flow b{font:.68rem var(--mono);color:var(--rust);letter-spacing:.04em}.bku-mechanism h2{font-size:1.7rem}.bku-mechanism__flow{display:grid;grid-template-columns:86px 1fr;gap:10px 16px;margin:20px 0}.bku-mechanism__flow p{margin:0}.bku-mechanism>a,.bku-mechanism>em{font:.7rem var(--mono);font-style:normal;text-transform:uppercase}.bku-system-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border:1px solid var(--ink)}.bku-system-node{min-height:180px;padding:24px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);color:inherit;text-decoration:none;display:flex;flex-direction:column;gap:10px}.bku-system-node:hover,.bku-system-node:focus-visible{background:var(--acid)}.bku-system-node span{font:.68rem var(--mono);color:var(--rust)}.bku-system-node strong{font-size:1.4rem}.bku-system-node small{margin-top:auto;color:var(--muted)}.bku-process--5{grid-template-columns:repeat(5,minmax(0,1fr))}.bku-evidence-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.bku-evidence-card{border:1px solid var(--ink);background:var(--paper-2);padding:28px}.bku-evidence-card>span{font:.68rem var(--mono);color:var(--rust)}.bku-evidence-card ul{padding-left:18px}.bku-evidence-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin:22px 0}.bku-evidence-list article{border:1px solid var(--line);padding:20px;background:var(--paper-2)}.bku-evidence-list span{font:.66rem var(--mono);color:var(--rust)}.bku-evidence-list h3{margin:.45rem 0}.bku-evidence-list code{font-size:.72rem;word-break:break-word}.bku-glossary-index{display:grid;gap:32px}.bku-glossary-letter{display:grid;grid-template-columns:90px 1fr;border-top:2px solid var(--ink);padding-top:18px}.bku-glossary-letter>h2{font-size:3rem;margin:0}.bku-glossary-letter dl{margin:0}.bku-glossary-entry{display:grid;grid-template-columns:260px 1fr;gap:24px;padding:14px 0;border-bottom:1px solid var(--line)}.bku-glossary-entry dt{font-weight:800}.bku-glossary-entry dd{margin:0;color:var(--muted)}.bku-graph-tool{border:1px solid var(--ink);background:var(--paper-2)}.bku-graph-toolbar{display:grid;grid-template-columns:1.5fr .7fr;gap:16px;padding:22px;border-bottom:1px solid var(--ink)}.bku-graph-toolbar input,.bku-graph-toolbar select{width:100%;font:inherit;padding:12px;background:white;border:1px solid var(--ink)}.bku-graph-status{padding:14px 22px;margin:0;border-bottom:1px solid var(--line);font:.72rem var(--mono);text-transform:uppercase}.bku-graph-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr))}.bku-graph-card{min-height:220px;padding:22px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);display:flex;flex-direction:column;color:inherit;text-decoration:none}.bku-graph-card[hidden]{display:none}.bku-graph-card>span{font:.65rem var(--mono);color:var(--rust);text-transform:uppercase}.bku-graph-card h3{font-size:1.2rem;margin:.6rem 0}.bku-graph-card p{font-size:.9rem;color:var(--muted);margin:0}.bku-relationship--wide{flex-wrap:wrap}.bku-entity-hero{display:grid;grid-template-columns:minmax(0,1fr) 250px;gap:60px;padding:72px 0 58px;border-bottom:1px solid var(--ink)}.bku-entity-hero h1{font-size:clamp(3rem,7vw,6rem);line-height:.92;margin:.5rem 0 1rem}.bku-entity-hero>div>p{max-width:800px;font-size:1.2rem}.bku-entity-hero aside{border:1px solid var(--ink);padding:24px;display:grid;gap:8px;align-content:start}.bku-entity-hero aside>span,.bku-entity-id{font:.68rem var(--mono);text-transform:uppercase}.bku-entity-hero aside strong{font-size:2.5rem;margin-top:12px}.bku-entity-hero aside small{color:var(--muted)}.bku-entity-id{margin-top:24px;color:var(--rust);word-break:break-all}.bku-fact-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));border:1px solid var(--ink);margin-bottom:34px}.bku-fact-grid>div{padding:24px;border-right:1px solid var(--line)}.bku-fact-grid span{display:block;font:.68rem var(--mono);color:var(--rust);margin-bottom:8px}.bku-fact-grid strong{font-size:1.1rem}.bku-callout{border-left:5px solid var(--acid);background:var(--paper-2);padding:22px 26px;margin-top:28px}.bku-callout strong{font:700 .78rem var(--mono);text-transform:uppercase}.bku-relation-list{list-style:none;padding:0;margin:22px 0 0;border-top:1px solid rgba(255,255,255,.28)}.bku-relation-list li{display:grid;grid-template-columns:220px 1fr;gap:20px;padding:14px 0;border-bottom:1px solid rgba(255,255,255,.18)}.bku-relation-list span{font:.67rem var(--mono);color:var(--acid);text-transform:uppercase}.bku-relation-list a,.bku-relation-list>li>span+span{color:var(--paper);font-weight:800}.bku-mechanism-detail{display:grid;grid-template-columns:.7fr 1.4fr .7fr;border:1px solid var(--ink)}.bku-mechanism-detail>div{padding:24px;border-right:1px solid var(--line)}.bku-mechanism-detail span{font:.68rem var(--mono);color:var(--rust)}.bku-trail{display:grid;gap:0;border-left:2px solid var(--ink);margin-left:36px}.bku-trail-step{position:relative;padding:12px 0 48px 52px;max-width:900px}.bku-trail-step:before{content:"";position:absolute;left:-9px;top:16px;width:16px;height:16px;border-radius:50%;background:var(--acid);border:2px solid var(--ink)}.bku-trail-step>span,.bku-trail-step small{font:.68rem var(--mono);color:var(--rust);text-transform:uppercase}.bku-trail-step h2{font-size:2rem;margin:.4rem 0}.bku-trail-prompt{font-weight:800}.bku-trail-step small{display:block;margin-top:12px;color:var(--muted)}
@media(max-width:1000px){.bku-page-intro--split,.bku-entity-hero{grid-template-columns:1fr}.bku-page-intro--split img{max-width:620px}.bku-geometry-row{grid-template-columns:200px 1fr}.bku-geometry-row>.bku-note,.bku-geometry-row>a,.bku-geometry-row>em{grid-column:2}.bku-process--5{grid-template-columns:repeat(2,minmax(0,1fr))}.bku-graph-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:720px){.bku-mechanism-grid,.bku-evidence-grid,.bku-evidence-list,.bku-fact-grid,.bku-graph-toolbar,.bku-graph-grid,.bku-system-grid{grid-template-columns:1fr}.bku-geometry-row{grid-template-columns:1fr}.bku-geometry-row>.bku-note,.bku-geometry-row>a,.bku-geometry-row>em{grid-column:1}.bku-glossary-letter{grid-template-columns:1fr}.bku-glossary-entry{grid-template-columns:1fr;gap:6px}.bku-process--5{grid-template-columns:1fr}.bku-mechanism-detail{grid-template-columns:1fr}.bku-mechanism-detail>div{border-right:0;border-bottom:1px solid var(--line)}.bku-relation-list li{grid-template-columns:1fr;gap:5px}.bku-subsection__head{grid-template-columns:1fr}.bku-trail{margin-left:14px}.bku-trail-step{padding-left:34px}}


/* BKU003 Geometry Lab + entity depth */
.bku-geometry-lab{display:grid;grid-template-columns:minmax(300px,.88fr) minmax(0,1.45fr);gap:28px;align-items:start}.bku-lab-controls{border:1px solid var(--ink);background:var(--white);padding:24px}.bku-lab-controls fieldset{border:0;padding:0;margin:0;display:grid;grid-template-columns:1fr 1fr;gap:16px}.bku-field{display:grid;gap:7px}.bku-field label{font:700 11px/1.2 var(--mono);letter-spacing:.04em;text-transform:uppercase}.bku-field input{width:100%;border:1px solid var(--ink);background:var(--paper);padding:12px 10px;font:700 18px/1 var(--sans);color:var(--ink)}.bku-field small{color:var(--muted);line-height:1.25}.bku-lab-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}.bku-lab-status{margin-top:16px;padding:12px;border-left:5px solid var(--green);background:var(--paper)}.bku-lab-status[data-state="error"]{border-left-color:var(--rust)}.bku-lab-viz{border:1px solid var(--ink);background:var(--white);padding:18px;min-width:0}.bku-lab-viz svg{display:block;width:100%;height:auto;background:var(--paper);border:1px solid var(--line)}.bku-lab-viz .ground{stroke:var(--ink);stroke-width:2}.bku-lab-viz .wheel{fill:none;stroke:var(--ink);stroke-width:4}.bku-lab-viz .frame-line{stroke:var(--pine);stroke-width:5;fill:none}.bku-lab-viz .measure{stroke:var(--rust);stroke-width:2;stroke-dasharray:8 7;fill:none}.bku-lab-viz .steer{stroke:var(--green);stroke-width:4}.bku-lab-viz .offset{stroke:var(--accent);stroke-width:4}.bku-lab-viz text{font-family:var(--mono);font-size:14px;fill:var(--ink)}.bku-lab-output{display:grid;grid-template-columns:repeat(4,1fr);margin-top:16px;border:1px solid var(--ink)}.bku-lab-output div{padding:16px;border-right:1px solid var(--line)}.bku-lab-output div:last-child{border-right:0}.bku-lab-output span{display:block;font:700 10px/1.2 var(--mono);color:var(--muted);text-transform:uppercase}.bku-lab-output strong{display:block;font-size:24px;margin-top:6px}.bku-assumption-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.bku-assumption-grid li{background:var(--white);border:1px solid var(--line);padding:16px;list-style:none}.bku-neighborhood{display:grid;grid-template-columns:1fr 1fr;gap:24px}.bku-edge-column{background:var(--white);color:var(--ink);padding:20px;border:1px solid rgba(255,255,255,.35)}.bku-edge-column h3{margin-top:0}.bku-edge-list{display:grid;gap:10px;padding:0;margin:0;list-style:none}.bku-edge-list li{display:grid;grid-template-columns:120px 1fr;gap:12px;border-top:1px solid var(--line);padding-top:10px}.bku-edge-list .bku-edge-type{font:700 10px/1.3 var(--mono);text-transform:uppercase;color:var(--rust)}.bku-edge-list a{color:var(--pine);font-weight:700}.bku-entity-depth{border:1px solid var(--line);background:var(--white);padding:20px;margin:22px 0}.bku-entity-depth-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.bku-entity-depth-grid div{background:var(--paper);padding:14px}.bku-entity-depth-grid span{display:block;font:700 10px/1.2 var(--mono);color:var(--muted);text-transform:uppercase}.bku-entity-depth-grid strong{font-size:20px}.bku-compare-table-wrap{overflow-x:auto;border:1px solid var(--ink);background:var(--white)}.bku-compare-table{width:100%;border-collapse:collapse;min-width:820px}.bku-compare-table th,.bku-compare-table td{padding:16px;text-align:left;vertical-align:top;border-right:1px solid var(--line);border-bottom:1px solid var(--line)}.bku-compare-table th{font:700 11px/1.2 var(--mono);text-transform:uppercase;background:var(--paper)}.bku-compare-table tr:last-child td{border-bottom:0}.bku-compare-table td:first-child{font-weight:700}.bku-lab-link-strip{display:flex;flex-wrap:wrap;gap:10px;margin:18px 0}.bku-lab-link-strip a{border:1px solid var(--ink);padding:10px 12px;background:var(--white);font:700 11px/1.2 var(--mono)}
@media(max-width:900px){.bku-geometry-lab{grid-template-columns:1fr}.bku-lab-output{grid-template-columns:1fr 1fr}.bku-assumption-grid,.bku-neighborhood,.bku-entity-depth-grid{grid-template-columns:1fr}}
@media(max-width:560px){.bku-lab-controls fieldset{grid-template-columns:1fr}.bku-lab-output{grid-template-columns:1fr}.bku-lab-output div{border-right:0;border-bottom:1px solid var(--line)}.bku-edge-list li{grid-template-columns:1fr}.bku-lab-viz{padding:8px}}
@media(prefers-reduced-motion:reduce){.bku-lab-viz svg *{transition:none!important;animation:none!important}}


/* BKU004 Workshop reasoning + interface explorer */
.bku-boundary-banner{display:flex;gap:18px;align-items:flex-start;margin-top:24px;padding:14px 16px;border-left:5px solid var(--green);background:var(--paper2);font-family:var(--mono, "Courier New", monospace);font-size:.78rem}.bku-boundary-banner strong{white-space:nowrap;color:var(--pine)}.bku-observation-grid{border:0;padding:0;margin:0;display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.bku-observation-option{display:block;cursor:pointer}.bku-observation-option input{position:absolute;opacity:0;pointer-events:none}.bku-observation-option span{display:block;height:100%;padding:18px;border:1px solid var(--ink);background:var(--white)}.bku-observation-option strong{display:block;font-size:1rem;line-height:1.25}.bku-observation-option small{display:block;margin-top:8px;color:var(--muted);font-size:.82rem;line-height:1.45}.bku-observation-option input:focus-visible+span{outline:4px solid var(--acid);outline-offset:3px}.bku-observation-option input:checked+span{background:var(--acid);box-shadow:inset 6px 0 0 var(--pine)}.bku-workshop-status{margin:16px 0 0;font:700 .75rem/1.4 var(--mono,"Courier New",monospace);color:var(--pine)}.bku-workshop-chain{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}.bku-workshop-chain article{background:var(--white);color:var(--ink);padding:18px;border:1px solid rgba(255,255,255,.35);min-width:0}.bku-workshop-chain article>span,.bku-interface-card>span,.bku-verification-card span{font:700 10px/1.25 var(--mono,"Courier New",monospace);letter-spacing:.06em;color:var(--rust)}.bku-workshop-chain h3{margin:.45rem 0 .7rem;font-size:1.15rem;line-height:1.15}.bku-workshop-chain p,.bku-workshop-chain li{font-size:.84rem;line-height:1.45}.bku-workshop-chain ul{padding-left:18px}.bku-workshop-authority{border-top:6px solid var(--acid)!important}.bku-authority-sources{display:grid;gap:6px;margin-top:14px;padding-top:14px;border-top:1px solid var(--line)}.bku-authority-sources strong{font-size:.78rem}.bku-authority-sources span{display:block;padding:7px 9px;background:var(--paper);font-size:.75rem}.bku-interface-grid{display:grid;gap:18px}.bku-interface-card{border:1px solid var(--ink);background:var(--white);padding:24px}.bku-interface-card h2{margin:.4rem 0 1rem;font-size:clamp(1.5rem,3vw,2.2rem);line-height:1.05}.bku-interface-columns{display:grid;grid-template-columns:1fr 1fr;gap:18px}.bku-interface-columns>div{padding:16px;background:var(--paper)}.bku-interface-columns h3{margin:0 0 8px;font-size:1rem}.bku-interface-columns ul{margin:0;padding-left:20px}.bku-interface-gate{margin-top:16px;padding:16px;border-left:5px solid var(--green);background:var(--paper2)}.bku-interface-gate strong{font:700 10px/1.2 var(--mono,"Courier New",monospace);color:var(--pine)}.bku-interface-gate p{margin:.45rem 0}.bku-interface-gate small{color:var(--muted)}.bku-verification-card{display:grid;grid-template-columns:1fr 1fr;border:1px solid var(--ink);background:var(--white)}.bku-verification-card>div{padding:20px}.bku-verification-card>div+div{border-left:1px solid var(--line)}.bku-verification-card ul{margin:.7rem 0 0;padding-left:20px}.bku-text-link{display:inline-block;margin-top:12px;font-weight:700}.bku-sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
@media(max-width:1000px){.bku-workshop-chain{grid-template-columns:1fr 1fr}.bku-workshop-chain article:last-child{grid-column:1/-1}}
@media(max-width:700px){.bku-observation-grid,.bku-interface-columns,.bku-verification-card,.bku-workshop-chain{grid-template-columns:1fr}.bku-verification-card>div+div{border-left:0;border-top:1px solid var(--line)}.bku-workshop-chain article:last-child{grid-column:auto}.bku-boundary-banner{display:block}.bku-boundary-banner strong{display:block;margin-bottom:6px}}
@media(prefers-reduced-motion:reduce){.bku-observation-option span{transition:none!important}}

/* BKU005 — selection + product identity */
.bku-selection-form{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;align-items:end;padding:22px;border:1px solid var(--ink);background:var(--white)}
.bku-selection-form label{display:grid;gap:8px;font-weight:800;font-size:.83rem}.bku-selection-form select{width:100%;min-height:46px;padding:10px 12px;border:1px solid var(--ink);background:var(--paper);color:var(--ink);font:inherit}.bku-selection-form .bku-button{min-height:46px;border:0;cursor:pointer}.bku-selection-status{margin:18px 0;color:var(--muted);font-family:"Courier New",monospace;font-size:.8rem}.bku-selection-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.bku-selection-card{border:1px solid var(--ink);background:var(--white);padding:24px}.bku-selection-card[hidden]{display:none}.bku-selection-card h2{margin:.25rem 0 .7rem;font-size:clamp(1.5rem,3vw,2.4rem);line-height:1}.bku-selection-card p{margin:.4rem 0}.bku-selection-state{display:inline-block;margin-top:12px;padding:8px 10px;background:var(--paper2);font-family:"Courier New",monospace;font-size:.72rem}.bku-gate-list{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:12px;list-style:none;margin:0;padding:0}.bku-gate-list li{background:var(--white);color:var(--ink);padding:18px;border-top:5px solid var(--acid)}.bku-gate-list strong,.bku-gate-list span{display:block}.bku-gate-list span{margin-top:8px;color:var(--muted);font-size:.88rem}.bku-link-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.bku-link-grid a{display:grid;gap:6px;padding:20px;border:1px solid var(--ink);background:var(--white);text-decoration:none}.bku-link-grid a:hover{background:var(--paper2)}.bku-link-grid span{color:var(--muted);font-size:.85rem}.bku-contract-strip{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));border:1px solid var(--ink);background:var(--white)}.bku-contract-strip article{padding:20px;min-height:150px}.bku-contract-strip article+article{border-left:1px solid var(--line)}.bku-contract-strip span{font-family:"Courier New",monospace;color:var(--rust);font-size:.72rem}.bku-contract-strip strong{display:block;margin:.6rem 0;font-size:1.05rem}.bku-contract-strip p{margin:0;color:var(--muted);font-size:.88rem}.bku-product-stack{display:grid;gap:22px}.bku-product-record{border:1px solid var(--ink);background:var(--white)}.bku-product-head{display:flex;justify-content:space-between;gap:24px;align-items:start;padding:24px;border-bottom:1px solid var(--line)}.bku-product-head h2{margin:.3rem 0;font-size:clamp(1.65rem,3.4vw,3rem);line-height:1}.bku-product-head p{margin:0;color:var(--muted)}.bku-product-code{padding:10px 12px;background:var(--ink);color:var(--white);font-family:"Courier New",monospace;font-size:.76rem;white-space:nowrap}.bku-product-columns{display:grid;grid-template-columns:1fr 1fr}.bku-product-columns>div{padding:24px}.bku-product-columns>div+div{border-left:1px solid var(--line)}.bku-product-columns h3{margin:0 0 16px}.bku-evidence-list{list-style:none;margin:0;padding:0}.bku-evidence-list li{display:grid;gap:4px;padding:12px 0;border-top:1px solid var(--line)}.bku-evidence-list span{color:var(--muted)}.bku-evidence-list small{font-family:"Courier New",monospace;color:var(--rust)}.bku-product-foot{display:grid;grid-template-columns:1fr 1fr;background:var(--paper2);border-top:1px solid var(--line)}.bku-product-foot p{margin:0;padding:18px 24px}.bku-product-foot p+ p{border-left:1px solid var(--line)}.bku-product-foot small{color:var(--muted)}.bku-offer-zero{display:grid;grid-template-columns:auto 1fr;gap:4px 18px;align-items:end;border:1px solid #60786d;padding:24px;background:#0f2c24}.bku-offer-zero strong{font-size:4rem;line-height:.8;color:var(--acid)}.bku-offer-zero span{font-size:1.2rem;font-weight:800}.bku-offer-zero p{grid-column:1/-1;margin:10px 0 0;color:#c7d3ca;font-family:"Courier New",monospace;font-size:.76rem}
@media(max-width:900px){.bku-selection-form{grid-template-columns:1fr 1fr}.bku-gate-list,.bku-contract-strip{grid-template-columns:1fr 1fr}.bku-link-grid{grid-template-columns:1fr 1fr}.bku-contract-strip article+article{border-left:0;border-top:1px solid var(--line)}}
@media(max-width:560px){.bku-selection-form,.bku-selection-grid,.bku-gate-list,.bku-link-grid,.bku-contract-strip,.bku-product-columns,.bku-product-foot{grid-template-columns:1fr}.bku-product-head{display:grid}.bku-product-code{justify-self:start}.bku-product-columns>div+div,.bku-product-foot p+ p{border-left:0;border-top:1px solid var(--line)}.bku-contract-strip article{min-height:0}.bku-selection-form{padding:16px}}


/* BKU006 — evidence freshness + compatibility comparison */
.bku-evidence-state-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}.bku-evidence-state-card{border:1px solid var(--ink);background:var(--white);padding:18px}.bku-evidence-state-card strong,.bku-state-pill{font:700 10px/1.2 "Courier New",monospace;text-transform:uppercase}.bku-state-pill{display:inline-block;padding:6px 8px;border:1px solid var(--ink);background:var(--paper2)}.bku-state-pill--current{background:var(--acid)}.bku-state-pill--unknown{background:var(--paper2)}.bku-state-pill--scope{background:#f0d9c8}.bku-product-evidence-summary{display:flex;gap:10px;flex-wrap:wrap;margin-top:12px}.bku-product-evidence-summary span{padding:7px 9px;background:var(--paper2);font:700 10px/1.2 "Courier New",monospace}.bku-compat-compare{border:1px solid var(--ink);background:var(--white);padding:24px}.bku-compat-form{display:grid;grid-template-columns:1fr 1fr auto;gap:12px;align-items:end}.bku-compat-form label{display:grid;gap:7px;font-weight:800}.bku-compat-form select{min-height:46px;padding:10px;border:1px solid var(--ink);background:var(--paper)}.bku-compat-result{margin-top:18px;padding:20px;border-left:6px solid var(--green);background:var(--paper2)}.bku-compat-result[data-state="category_evidence_not_pairwise_certification"]{border-left-color:var(--acid)}.bku-compat-result[data-state="scope_mismatch_requires_authoritative_check"]{border-left-color:var(--rust)}.bku-research-flow{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));border:1px solid var(--ink);background:var(--white)}.bku-research-flow a,.bku-research-flow span{padding:18px;border-right:1px solid var(--line)}.bku-research-flow a:last-child,.bku-research-flow span:last-child{border-right:0}.bku-research-flow strong{display:block}.bku-research-flow small{display:block;margin-top:6px;color:var(--muted)}.bku-evidence-warning{padding:16px;border-left:5px solid var(--rust);background:#f4e9df}.bku-evidence-current{padding:16px;border-left:5px solid var(--green);background:var(--paper2)}
@media(max-width:900px){.bku-evidence-state-grid{grid-template-columns:1fr 1fr}.bku-compat-form{grid-template-columns:1fr}.bku-research-flow{grid-template-columns:1fr}.bku-research-flow a,.bku-research-flow span{border-right:0;border-bottom:1px solid var(--line)}}
@media(max-width:560px){.bku-evidence-state-grid{grid-template-columns:1fr}}

/* BKU007 standards / requirement evidence */
.bku-standard-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.bku-standard-card{border:1px solid var(--ink);background:var(--white);padding:24px}.bku-standard-card h3{font-size:1.65rem;line-height:1.05;margin:.45em 0}.bku-standard-card>p{color:var(--muted)}.bku-standard-card dl{display:grid;grid-template-columns:110px 1fr;border-top:1px solid var(--line);margin:18px 0 0;padding-top:12px;font-size:.82rem}.bku-standard-card dt{font-family:"Courier New",monospace;font-weight:800;text-transform:uppercase}.bku-standard-card dd{margin:0 0 8px;color:var(--muted);overflow-wrap:anywhere}.bku-standard-caution{margin-top:12px;padding:12px;border-left:4px solid var(--green);background:var(--paper2)}.bku-standard-caution p{margin:.25em 0 0;color:var(--muted)}.bku-requirement-explorer{background:var(--white);color:var(--ink);border:1px solid #60786d;padding:26px}.bku-requirement-explorer label{display:block;font-family:"Courier New",monospace;font-size:.75rem;font-weight:800;text-transform:uppercase;margin-bottom:8px}.bku-requirement-explorer select{width:100%;padding:14px;border:1px solid var(--ink);background:var(--paper);font:inherit;font-weight:700}.bku-requirement-status{margin:18px 0;color:var(--muted)}.bku-requirement-list{display:grid;gap:8px}.bku-requirement-row{display:grid;grid-template-columns:140px 230px 1fr;gap:14px;border:1px solid var(--line);padding:14px;align-items:start}.bku-requirement-row strong{font-family:"Courier New",monospace;font-size:.72rem;text-transform:uppercase}.bku-requirement-row[data-state=established]{border-left:6px solid var(--green)}.bku-requirement-row[data-state=missing]{border-left:6px solid var(--rust)}.bku-requirement-row[data-state=unknown]{border-left:6px solid #c4a24d}.bku-requirement-row[data-state=stale]{border-left:6px solid #777}.bku-requirement-row[data-state=conflicting]{border-left:6px solid #7e2e2e}.bku-requirement-key{font-weight:800}.bku-requirement-evidence{font-size:.73rem;color:var(--muted);overflow-wrap:anywhere}.bku-no-transitive{display:flex;gap:24px;align-items:center;margin-top:18px;background:var(--ink);color:var(--white);padding:18px}.bku-no-transitive strong{color:var(--acid);white-space:nowrap}.bku-standard-state-strip{display:grid;grid-template-columns:repeat(5,1fr);border:1px solid var(--ink)}.bku-standard-state-strip div{padding:20px;border-right:1px solid var(--ink)}.bku-standard-state-strip strong{font-size:2.4rem;display:block;line-height:1}.bku-standard-state-strip span{font-family:"Courier New",monospace;font-size:.7rem;color:var(--muted)}@media(max-width:900px){.bku-standard-grid{grid-template-columns:1fr}.bku-standard-state-strip{grid-template-columns:1fr 1fr}.bku-requirement-row{grid-template-columns:110px 1fr}.bku-requirement-row .bku-requirement-evidence{grid-column:1/-1}.bku-no-transitive{align-items:flex-start;flex-direction:column}}@media(max-width:560px){.bku-standard-state-strip{grid-template-columns:1fr}.bku-requirement-row{grid-template-columns:1fr}.bku-standard-card{padding:18px}.bku-standard-card dl{grid-template-columns:1fr}.bku-no-transitive strong{white-space:normal}}

/* BKU008 bounded system-assembly research */
.bku-assembly-explorer{border:1px solid #60786d;background:var(--white);color:var(--ink);padding:26px}.bku-assembly-explorer>label{display:block;font-family:"Courier New",monospace;font-size:.75rem;font-weight:800;text-transform:uppercase;margin-bottom:8px}.bku-assembly-explorer>select{width:100%;padding:14px;border:1px solid var(--ink);background:var(--paper);font:inherit;font-weight:800}.bku-assembly-status{color:var(--muted);margin:18px 0}.bku-assembly-selected{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin:18px 0}.bku-assembly-product{border:1px solid var(--line);background:var(--paper2);padding:16px}.bku-assembly-product strong{display:block}.bku-assembly-product small{display:block;color:var(--muted);overflow-wrap:anywhere;margin-top:6px}.bku-assembly-state-strip{display:grid;grid-template-columns:repeat(5,1fr);border:1px solid var(--ink);margin:18px 0}.bku-assembly-state-strip div{padding:15px;border-right:1px solid var(--ink)}.bku-assembly-state-strip strong{display:block;font-size:1.8rem;line-height:1}.bku-assembly-state-strip span{font-family:"Courier New",monospace;font-size:.65rem;text-transform:uppercase}.bku-assembly-requirements{display:grid;gap:8px}.bku-assembly-requirement{display:grid;grid-template-columns:120px 250px 1fr;gap:14px;border:1px solid var(--line);padding:14px;align-items:start}.bku-assembly-requirement>strong{font-family:"Courier New",monospace;font-size:.72rem;text-transform:uppercase}.bku-assembly-requirement[data-state=established]{border-left:6px solid var(--green)}.bku-assembly-requirement[data-state=missing]{border-left:6px solid var(--rust)}.bku-assembly-requirement[data-state=unknown]{border-left:6px solid #c4a24d}.bku-assembly-requirement[data-state=stale]{border-left:6px solid #777}.bku-assembly-requirement[data-state=conflicting]{border-left:6px solid #7e2e2e}.bku-assembly-requirement .bku-assembly-key{font-weight:800}.bku-assembly-requirement .bku-assembly-evidence{grid-column:3;font-size:.72rem;color:var(--muted);overflow-wrap:anywhere}.bku-assembly-requirement[data-authority-gate=true]{background:#f4eadc}.bku-boundary-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.bku-boundary-grid article{border:1px solid var(--ink);padding:20px;background:var(--white)}.bku-boundary-grid strong{font-family:"Courier New",monospace;font-size:.75rem;color:var(--rust)}.bku-boundary-grid p{color:var(--muted)}@media(max-width:900px){.bku-assembly-selected{grid-template-columns:1fr}.bku-assembly-state-strip{grid-template-columns:1fr 1fr}.bku-assembly-requirement{grid-template-columns:110px 1fr}.bku-assembly-requirement .bku-assembly-evidence{grid-column:1/-1}.bku-boundary-grid{grid-template-columns:1fr 1fr}}@media(max-width:560px){.bku-assembly-explorer{padding:18px}.bku-assembly-state-strip{grid-template-columns:1fr}.bku-assembly-requirement{grid-template-columns:1fr}.bku-boundary-grid{grid-template-columns:1fr}}

/* BKU009 evidence-gap research navigation */
.bku-gap-type-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.bku-gap-type-card{border:1px solid var(--ink);background:var(--white);padding:20px}.bku-gap-type-card>span,.bku-gap-type-card>small{font-family:"Courier New",monospace;font-size:.68rem;font-weight:800;text-transform:uppercase}.bku-gap-type-card>span{color:var(--rust)}.bku-gap-type-card h3{margin:.55rem 0}.bku-gap-type-card p{color:var(--muted)}.bku-gap-type-card small{display:block;color:var(--pine);line-height:1.4}.bku-gap-explorer{border:1px solid #60786d;background:var(--white);color:var(--ink);padding:26px}.bku-gap-explorer>label{display:block;font-family:"Courier New",monospace;font-size:.75rem;font-weight:800;text-transform:uppercase;margin-bottom:8px}.bku-gap-explorer>select{width:100%;padding:14px;border:1px solid var(--ink);background:var(--paper);font:inherit;font-weight:800}.bku-gap-status{color:var(--muted);margin:18px 0}.bku-gap-list{display:grid;gap:12px}.bku-gap-row{border:1px solid var(--line);background:var(--paper2);padding:16px}.bku-gap-row[data-state=missing]{border-left:6px solid var(--rust)}.bku-gap-row[data-state=unknown]{border-left:6px solid #c4a24d}.bku-gap-row__head{display:grid;grid-template-columns:120px 1fr;gap:14px;align-items:start}.bku-gap-row__state{font-family:"Courier New",monospace;font-size:.7rem;font-weight:800;text-transform:uppercase}.bku-gap-row__title{font-weight:900}.bku-gap-row__reason{color:var(--muted);margin:.65rem 0}.bku-gap-destinations{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}.bku-gap-destinations a{display:inline-flex;flex-direction:column;gap:3px;border:1px solid var(--ink);background:var(--white);color:var(--ink);padding:10px 12px;text-decoration:none;min-width:180px}.bku-gap-destinations a:hover,.bku-gap-destinations a:focus-visible{background:var(--acid)}.bku-gap-destinations strong{font-size:.82rem}.bku-gap-destinations small{color:var(--muted);font-size:.68rem}.bku-gap-graph{font-family:"Courier New",monospace;font-size:.68rem;color:var(--pine);overflow-wrap:anywhere;margin-top:10px}.bku-gap-row[data-authority-gate=true]{background:#f4eadc}@media(max-width:900px){.bku-gap-type-grid{grid-template-columns:1fr 1fr}.bku-gap-row__head{grid-template-columns:1fr}}@media(max-width:560px){.bku-gap-type-grid{grid-template-columns:1fr}.bku-gap-explorer{padding:18px}.bku-gap-destinations{display:grid;grid-template-columns:1fr}.bku-gap-destinations a{min-width:0}}

/* BKU010 evidence resolution ledger + research handoff */
.bku-ledger-summary{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));border:1px solid var(--bku-ink,#111713);margin:1.25rem 0 2rem}.bku-ledger-summary>div{padding:1rem;border-right:1px solid #b8b7ae}.bku-ledger-summary>div:last-child{border-right:0}.bku-ledger-summary strong{display:block;font-size:2rem;line-height:1}.bku-ledger-summary span{font:700 .68rem/1.3 "IBM Plex Mono",monospace;text-transform:uppercase;letter-spacing:.04em}.bku-resolution-event{display:grid;grid-template-columns:9rem 13rem 1fr 17rem;gap:1rem;padding:1rem;border-top:1px solid #b8b7ae;align-items:start}.bku-resolution-event[data-event="evidence_established"]{border-left:5px solid #b8d65c;background:#f8f9ef}.bku-resolution-event[data-event="reviewed_unresolved"]{border-left:5px solid #a64d32;background:#f3eee3}.bku-resolution-event strong,.bku-session-row strong{font:700 .72rem/1.4 "IBM Plex Mono",monospace;text-transform:uppercase}.bku-resolution-event small{display:block;margin-top:.3rem;color:#5e645f}.bku-history-lock{padding:1rem 1.2rem;border-left:5px solid #a64d32;background:#ebe6d9;margin:1rem 0}.bku-session-grid{display:grid;grid-template-columns:1fr 1fr;gap:1rem}.bku-session-panel{border:1px solid #111713;padding:1rem;background:#fbfcf7}.bku-session-panel ul{margin:.75rem 0 0;padding-left:1.2rem}.bku-session-row{display:grid;grid-template-columns:10rem 1fr 12rem;gap:1rem;border-top:1px solid #b8b7ae;padding:.8rem 0}.bku-session-row[data-state="established"]{border-left:4px solid #b8d65c;padding-left:.8rem}.bku-session-row[data-state="open"]{border-left:4px solid #a64d32;padding-left:.8rem}.bku-resolution-timeline{border:1px solid #111713;background:#fbfcf7}.bku-resolution-timeline__head{padding:1rem 1.2rem;background:#13382d;color:#fbfcf7}.bku-resolution-timeline__head strong{color:#b8d65c}.bku-handoff-actions{display:grid;grid-template-columns:repeat(4,1fr);gap:.75rem}.bku-handoff-actions a{display:block;border:1px solid #111713;padding:1rem;text-decoration:none;background:#fbfcf7}.bku-handoff-actions strong{display:block;font:700 .72rem/1.3 "IBM Plex Mono",monospace;text-transform:uppercase;color:#a64d32}.bku-handoff-actions span{display:block;margin-top:.4rem;color:#5e645f}.bku-ledger-form{display:grid;grid-template-columns:minmax(14rem,22rem) 1fr;gap:1rem;align-items:end}.bku-ledger-form select{width:100%;padding:.75rem;border:1px solid #111713;background:#fbfcf7}.bku-ledger-status{padding:1rem;border-left:4px solid #6f9d73;background:#ebe6d9}.bku-mini-state{display:inline-block;padding:.15rem .35rem;background:#111713;color:#fbfcf7;font:700 .65rem/1.2 "IBM Plex Mono",monospace;text-transform:uppercase}.bku-mini-state--resolved{background:#b8d65c;color:#111713}.bku-mini-state--open{background:#a64d32;color:#fff}
@media(max-width:760px){.bku-ledger-summary{grid-template-columns:1fr}.bku-ledger-summary>div{border-right:0;border-bottom:1px solid #b8b7ae}.bku-resolution-event{grid-template-columns:1fr;gap:.35rem}.bku-session-grid,.bku-handoff-actions,.bku-ledger-form{grid-template-columns:1fr}.bku-session-row{grid-template-columns:1fr;gap:.3rem}}

/* BKU011 evidence changelog + source-scope review */
.bku-change-summary{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));border:1px solid #111713;margin:1.25rem 0 2rem}.bku-change-summary>div{padding:1rem;border-right:1px solid #b8b7ae}.bku-change-summary>div:last-child{border-right:0}.bku-change-summary strong{display:block;font-size:2rem;line-height:1}.bku-change-summary span{font:700 .68rem/1.3 "IBM Plex Mono",monospace;text-transform:uppercase;letter-spacing:.04em}.bku-change-log{border:1px solid #111713;background:#fbfcf7}.bku-change-event{display:grid;grid-template-columns:9rem 14rem 1fr 11rem;gap:1rem;padding:1rem;border-top:1px solid #b8b7ae;align-items:start}.bku-change-event:first-child{border-top:0}.bku-change-event[data-lifecycle="scope_warning"]{border-left:5px solid #a64d32;background:#f3eee3}.bku-change-event[data-lifecycle="current"]{border-left:5px solid #6f9d73}.bku-change-event strong,.bku-change-event small{font:700 .69rem/1.35 "IBM Plex Mono",monospace;text-transform:uppercase}.bku-change-event small{color:#5e645f}.bku-review-shell{display:grid;grid-template-columns:minmax(14rem,22rem) 1fr;gap:1rem;align-items:end}.bku-review-shell select{width:100%;padding:.75rem;border:1px solid #111713;background:#fbfcf7}.bku-scope-compare{display:grid;grid-template-columns:1fr 1fr;gap:1rem;margin-top:1rem}.bku-scope-card{border:1px solid #111713;padding:1rem;background:#fbfcf7}.bku-scope-card strong{display:block;font:700 .72rem/1.3 "IBM Plex Mono",monospace;text-transform:uppercase;color:#a64d32}.bku-scope-card h3{margin:.4rem 0}.bku-review-result{margin-top:1rem;border-left:5px solid #b8d65c;background:#eef5d4;padding:1rem}.bku-review-result strong{font:700 .72rem/1.3 "IBM Plex Mono",monospace;text-transform:uppercase}.bku-lifecycle-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));border:1px solid #111713}.bku-lifecycle-grid>div{padding:1rem;border-right:1px solid #b8b7ae}.bku-lifecycle-grid>div:last-child{border-right:0}.bku-lifecycle-grid strong{display:block;font-size:1.8rem}.bku-scope-note{padding:1rem;border-left:5px solid #6f9d73;background:#ebe6d9;margin:1rem 0}.bku-source-actions{display:grid;grid-template-columns:repeat(4,1fr);gap:.75rem}.bku-source-actions>div{border:1px solid #111713;padding:1rem;background:#fbfcf7}.bku-source-actions strong{display:block;font:700 .7rem/1.3 "IBM Plex Mono",monospace;text-transform:uppercase;color:#a64d32}.bku-source-actions span{display:block;margin-top:.4rem;color:#5e645f}
@media(max-width:760px){.bku-change-summary,.bku-lifecycle-grid{grid-template-columns:1fr}.bku-change-summary>div,.bku-lifecycle-grid>div{border-right:0;border-bottom:1px solid #b8b7ae}.bku-change-event{grid-template-columns:1fr;gap:.35rem}.bku-review-shell,.bku-scope-compare,.bku-source-actions{grid-template-columns:1fr}}


/* BKU012 evidence freshness queue + reverification workflow */
.bku-freshness-summary{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));border:1px solid #111713;margin:1.25rem 0 2rem}.bku-freshness-summary>div{padding:1rem;border-right:1px solid #b8b7ae}.bku-freshness-summary>div:last-child{border-right:0}.bku-freshness-summary strong{display:block;font-size:2rem;line-height:1}.bku-freshness-summary span{font:700 .68rem/1.3 "IBM Plex Mono",monospace;text-transform:uppercase}.bku-freshness-controls{display:grid;grid-template-columns:18rem 1fr;gap:1rem;align-items:end;margin:1rem 0}.bku-freshness-controls select{width:100%;padding:.75rem;border:1px solid #111713;background:#fbfcf7}.bku-freshness-status{padding:1rem;border-left:4px solid #6f9d73;background:#ebe6d9}.bku-freshness-list{display:grid;gap:.75rem}.bku-freshness-card{border:1px solid #111713;background:#fbfcf7;padding:1rem}.bku-freshness-card[data-state="current"]{border-left:6px solid #6f9d73}.bku-freshness-card[data-state="due"]{border-left:6px solid #a64d32}.bku-freshness-card[data-state="blocked"]{border-left:6px solid #777}.bku-freshness-card[data-state="scope_review_needed"]{border-left:6px solid #c4a24d;background:#f4eadc}.bku-freshness-card__head{display:grid;grid-template-columns:12rem 1fr 10rem;gap:1rem;align-items:start}.bku-freshness-card__state,.bku-freshness-card__priority{font:700 .68rem/1.3 "IBM Plex Mono",monospace;text-transform:uppercase}.bku-freshness-card__state{color:#a64d32}.bku-freshness-card h3{margin:.25rem 0}.bku-freshness-card p{color:#5e645f}.bku-freshness-meta{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:.6rem;margin-top:.8rem}.bku-freshness-meta span{font:700 .66rem/1.35 "IBM Plex Mono",monospace;overflow-wrap:anywhere}.bku-reverify-steps{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:.75rem}.bku-reverify-steps article{border:1px solid #111713;background:#fbfcf7;padding:1rem}.bku-reverify-steps strong{display:block;color:#a64d32;font:700 .7rem/1.3 "IBM Plex Mono",monospace}.bku-completed-rechecks{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:.75rem}.bku-completed-rechecks article{border:1px solid #111713;background:#fbfcf7;padding:1rem}.bku-completed-rechecks strong{display:block;font:700 .72rem/1.3 "IBM Plex Mono",monospace;color:#13382d}.bku-queue-boundary{border-left:5px solid #a64d32;background:#ebe6d9;padding:1rem 1.2rem;margin:1rem 0}.bku-queue-boundary strong{font:700 .72rem/1.3 "IBM Plex Mono",monospace;text-transform:uppercase}@media(max-width:760px){.bku-freshness-summary,.bku-freshness-controls,.bku-freshness-card__head,.bku-freshness-meta,.bku-reverify-steps,.bku-completed-rechecks{grid-template-columns:1fr}.bku-freshness-summary>div{border-right:0;border-bottom:1px solid #b8b7ae}}

/* BKU013 source availability + due/retry review */
.bku-availability-summary{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));border:1px solid #111713;margin:1.25rem 0 2rem}.bku-availability-summary>div{padding:1rem;border-right:1px solid #b8b7ae}.bku-availability-summary>div:last-child{border-right:0}.bku-availability-summary strong{display:block;font-size:2rem;line-height:1}.bku-availability-summary span{font:700 .68rem/1.3 "IBM Plex Mono",monospace;text-transform:uppercase}.bku-avail-controls{display:grid;grid-template-columns:18rem 1fr;gap:1rem;align-items:end;margin:1rem 0}.bku-avail-controls select{width:100%;padding:.75rem;border:1px solid #111713;background:#fbfcf7}.bku-avail-status{padding:1rem;border-left:4px solid #6f9d73;background:#ebe6d9}.bku-avail-list{display:grid;gap:.65rem}.bku-avail-card{display:grid;grid-template-columns:10rem 1.1fr 1.3fr 11rem;gap:1rem;align-items:start;border:1px solid #b8b7ae;background:#fbfcf7;padding:.9rem}.bku-avail-card[data-state="current"]{border-left:6px solid #6f9d73}.bku-avail-card[data-state="scope_review_needed"]{border-left:6px solid #c4a24d;background:#f4eadc}.bku-avail-card[data-state="scheduled_due"]{border-left:6px solid #a64d32}.bku-avail-card[data-state="retry_pending"]{border-left:6px solid #7a5fa8}.bku-avail-card[data-state="source_unavailable"]{border-left:6px solid #111713}.bku-avail-card strong,.bku-avail-card small{font-family:"IBM Plex Mono",monospace}.bku-avail-card small{overflow-wrap:anywhere;color:#5e645f}.bku-state-defs{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:.7rem}.bku-state-defs article,.bku-successor-rules article{border:1px solid #111713;background:#fbfcf7;padding:1rem}.bku-state-defs strong,.bku-successor-rules strong{display:block;font:700 .7rem/1.3 "IBM Plex Mono",monospace;color:#a64d32}.bku-successor-rules{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:.8rem}.bku-avail-boundary{border-left:5px solid #a64d32;background:#ebe6d9;padding:1rem 1.2rem;margin:1rem 0}.bku-avail-boundary strong{font:700 .72rem/1.3 "IBM Plex Mono",monospace;text-transform:uppercase}@media(max-width:760px){.bku-availability-summary,.bku-avail-controls,.bku-avail-card,.bku-state-defs,.bku-successor-rules{grid-template-columns:1fr}.bku-availability-summary>div{border-right:0;border-bottom:1px solid #b8b7ae}}