/* Option A — Drawing Sheet. Engineering-drawing language: drafting-vellum paper, ink line, one kanban-amber signal. */
:root{
  --paper:#F1F2EE; --ink:#15191E; --muted:#5D656C; --rule:rgba(21,25,30,.14); --grid:rgba(21,25,30,.045);
  --signal:#C98705; --signal-soft:rgba(201,135,5,.14); --on-signal:#15191E;
  --sans:"IBM Plex Sans",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,"SFMono-Regular",Menlo,monospace;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --paper:#0F1418; --ink:#E3E6E1; --muted:#8E979D; --rule:rgba(227,230,225,.16); --grid:rgba(227,230,225,.045);
  --signal:#F0B43C; --signal-soft:rgba(240,180,60,.16); color-scheme:dark}}
:root[data-theme="dark"]{
  --paper:#0F1418; --ink:#E3E6E1; --muted:#8E979D; --rule:rgba(227,230,225,.16); --grid:rgba(227,230,225,.045);
  --signal:#F0B43C; --signal-soft:rgba(240,180,60,.16); color-scheme:dark}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font:400 16px/1.5 var(--sans);-webkit-font-smoothing:antialiased;
  background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);background-size:24px 24px}
a{color:inherit}
.sheet{max-width:1120px;margin:0 auto;padding-inline:20px}
.f-mono,.mono{font-family:var(--mono);font-size:11.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
h1,h2{font-weight:300;letter-spacing:-.02em;text-wrap:balance;margin:0}
h1{font-size:clamp(34px,6.2vw,76px);line-height:1.02;max-width:15ch}
h2{font-size:clamp(26px,3.6vw,42px);line-height:1.1;max-width:24ch}
p{margin:0;color:var(--muted);max-width:52ch}
section{padding-block:clamp(64px,11vw,128px);border-top:1px solid var(--rule)}
.fighead{display:flex;flex-direction:column;gap:14px;margin-bottom:clamp(32px,5vw,56px)}
.figlabel{display:flex;gap:10px;align-items:center}
.figlabel::before{content:"";width:28px;height:1px;background:var(--ink)}
.f-svg{width:100%;height:auto;overflow:visible;display:block}
:focus-visible{outline:2px solid var(--signal);outline-offset:3px}

/* Top bar: chapter board */
.bar{position:sticky;top:env(safe-area-inset-top,0px);z-index:5;background:var(--paper);border-bottom:1px solid var(--rule)}
.bar .sheet{display:flex;justify-content:space-between;align-items:center;gap:16px;padding-block:12px}
.bar a{text-decoration:none}
.bar nav{display:flex;gap:4px}
.bar nav a{font-family:var(--mono);font-size:12px;width:34px;height:28px;display:grid;place-items:center;border:1px solid var(--rule)}
.bar nav a[aria-current="page"]{background:var(--signal);border-color:var(--signal);color:var(--on-signal)}

/* Hero */
.hero{border-top:0;display:grid;gap:clamp(28px,5vw,48px);padding-block:clamp(56px,10vw,112px) clamp(48px,8vw,96px)}
.draw{stroke:var(--ink);stroke-width:1.5;fill:none;stroke-dasharray:1;stroke-dashoffset:1;animation:draw 2.4s cubic-bezier(.65,0,.35,1) .2s forwards}
.tick{stroke:var(--ink);stroke-width:1.5;opacity:0;animation:fade .4s ease forwards}
.card-text{font-family:var(--mono);font-size:10px;letter-spacing:.14em;fill:var(--muted);opacity:0;animation:fade .6s ease 2.4s forwards}
.card-fill{fill:var(--signal-soft);opacity:0;animation:fade .6s ease 2.3s forwards}
@keyframes draw{to{stroke-dashoffset:0}}
@keyframes fade{to{opacity:1}}

/* Chapter opener */
.opener{display:grid;grid-template-columns:auto 1fr;gap:clamp(20px,4vw,48px);align-items:end;border-top:0}
.opener .num{font-family:var(--mono);font-size:clamp(72px,14vw,168px);line-height:.8;font-weight:400;color:var(--signal)}
.next{display:flex;justify-content:space-between;align-items:center;gap:16px;text-decoration:none;border:1.5px solid var(--ink);padding:18px 20px}
.next b{font-weight:300;font-size:clamp(20px,3vw,30px)}

/* Shared figure styles */
.f-node{fill:var(--paper);stroke:var(--ink);stroke-width:1.5}
.f-node.hot{fill:var(--signal-soft);stroke:var(--signal)}
.f-zone{fill:none;stroke:var(--rule);stroke-dasharray:4 4}
.f-lbl{font-family:var(--mono);font-size:10px;letter-spacing:.08em;fill:var(--ink)}
.f-lbl.m{fill:var(--muted)} .f-lbl.big{font-size:12px;letter-spacing:.14em} .f-lbl.hot{fill:var(--signal)}
.f-center{font-family:var(--sans);font-size:22px;font-weight:300;fill:var(--ink)}
.f-edge{stroke:var(--ink);stroke-width:1.3;fill:none}
.f-edge.dash{stroke-dasharray:5 5} .f-edge.faint{stroke-opacity:.18}
.f-dot,.f-dotf{fill:var(--ink)} .f-hub{fill:var(--signal)}
.f-kcard{fill:var(--signal)}
.f-gridline{stroke:var(--rule)} .f-axis{font-family:var(--mono);font-size:10px;fill:var(--muted)}

/* VSM */
.f-vsm{display:grid;grid-template-columns:1fr 44px 1fr 44px 1fr 44px 1fr;align-items:start}
.f-proc{border:1.5px solid var(--ink);background:var(--paper);min-width:0;text-decoration:none;display:block;transition:transform .2s}
a.f-proc:hover{transform:translateY(-3px)}
.f-proc header{border-bottom:1.5px solid var(--ink);padding:10px 12px;display:flex;justify-content:space-between;gap:8px}
.f-proc.now header{background:var(--signal);border-bottom-color:var(--signal)} .f-proc.now header .f-mono{color:var(--on-signal)}
.f-proc h3{font-weight:600;font-size:17px;margin:0;padding:14px 12px 4px}
.f-org{font-size:13px;color:var(--muted);padding:0 12px 14px}
.f-databox{border-top:1px dashed var(--rule);padding:10px 12px 14px;display:grid;gap:6px}
.f-databox div{display:flex;justify-content:space-between;gap:10px;font-family:var(--mono);font-size:12px}
.f-databox span:first-child{color:var(--muted)} .f-databox span:last-child{text-align:right}
.f-pull{display:flex;justify-content:center;padding-top:56px}
.f-pull svg{width:40px;height:24px;stroke:var(--ink);fill:none;stroke-width:1.5}
.f-ladder{display:flex;margin-top:28px;align-items:flex-end}
.f-seg{min-width:0;border-top:1.5px solid var(--ink);padding-top:8px;font-family:var(--mono);font-size:11px;color:var(--muted)}
.f-seg.up{border-top:0;border-bottom:1.5px solid var(--ink);padding:0 0 8px;margin-bottom:22px}
.f-total{border:1.5px solid var(--ink);padding:8px 12px;margin-left:14px;font-family:var(--mono);font-size:12px;white-space:nowrap}
@media (max-width:820px){.f-vsm{grid-template-columns:1fr}.f-pull{padding:10px 0}.f-pull svg{transform:rotate(90deg)}.f-ladder{display:none}}

/* Yamazumi */
.f-yz{display:grid;grid-template-columns:minmax(0,1fr) 250px;gap:clamp(24px,4vw,48px);align-items:start}
.f-yz svg{border-bottom:1.5px solid var(--ink)}
.f-el{stroke:var(--paper);stroke-width:1} .f-el.a{fill:var(--ink);fill-opacity:.82} .f-el.b{fill:var(--ink);fill-opacity:.5}
.f-takt{stroke:var(--signal);stroke-width:2;stroke-dasharray:6 5}
.f-taktlbl{font-family:var(--mono);font-size:11px;fill:var(--signal);letter-spacing:.08em}
.f-ctrl{display:grid;gap:20px} .f-ctrl label{display:grid;gap:10px}
input[type=range]{width:100%;accent-color:var(--signal)}
.f-readout{border:1.5px solid var(--ink)}
.f-readout div{display:flex;justify-content:space-between;padding:10px 12px;border-bottom:1px solid var(--rule);font-family:var(--mono);font-size:12px}
.f-readout div:last-child{border-bottom:0} .f-readout span{color:var(--muted)} .f-readout b{font-weight:500;font-variant-numeric:tabular-nums;font-size:15px}
@media (max-width:760px){.f-yz{grid-template-columns:1fr}}

/* Programmes strip */
.strip{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));border:1.5px solid var(--ink)}
.strip div{padding:16px;border-right:1px solid var(--rule);font-size:15px;min-width:0}
.strip div:last-child{border-right:0}
.strip .f-mono{display:block;margin-bottom:8px}

/* Heijunka */
.f-heijunka{display:grid;gap:8px;max-width:640px}
.f-hrow{display:grid;grid-template-columns:minmax(0,1fr) repeat(6,34px) 40px;gap:6px;align-items:center}
.f-hrow.total{grid-template-columns:minmax(0,1fr) 40px;border-top:1.5px solid var(--ink);padding-top:10px;margin-top:4px}
.f-hlabel{font-size:14px} .f-hn{font-family:var(--mono);font-size:13px;text-align:right} .f-hn.big{font-size:20px;color:var(--signal)}
.f-slot{height:34px;border:1px solid var(--rule)} .f-slot.on{border-color:var(--ink);background:linear-gradient(var(--ink),var(--ink)) center/60% 40% no-repeat}
@media (max-width:520px){.f-hrow{grid-template-columns:minmax(0,1fr) repeat(6,20px) 28px;gap:4px}.f-slot{height:22px}}

/* Layout morph */
.f-layout{display:grid;grid-template-columns:220px minmax(0,1fr);gap:clamp(20px,4vw,48px);align-items:start}
.f-steps{list-style:none;margin:0;padding:0;display:grid;gap:0;border:1.5px solid var(--ink)}
.f-steps li{display:flex;gap:12px;align-items:center;padding:11px 14px;border-bottom:1px solid var(--rule);font-size:15px}
.f-steps li:last-child{border-bottom:0} .f-steps li.last{background:var(--signal-soft)}
.f-mach{transition:transform 1.2s cubic-bezier(.65,0,.35,1)}
.f-zone{opacity:0;transition:opacity .8s .6s} .cells .f-zone{opacity:1}
.f-btn{margin-top:14px;font:500 12px var(--mono);letter-spacing:.1em;text-transform:uppercase;background:transparent;color:var(--ink);border:1.5px solid var(--ink);padding:10px 14px;cursor:pointer}
@media (max-width:720px){.f-layout{grid-template-columns:1fr}}

/* Chain */
.f-chain{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:10px 0;counter-reset:c}
.f-chain li{counter-increment:c;border:1.5px solid var(--ink);padding:12px 14px;font-size:14px;position:relative;margin-right:28px;background:var(--paper)}
.f-chain li::before{content:counter(c,decimal-leading-zero);display:block;font:11px var(--mono);color:var(--muted);margin-bottom:4px}
.f-chain li:not(:last-child)::after{content:"→";position:absolute;right:-22px;top:50%;transform:translateY(-50%)}
.f-chain li.hot{border-color:var(--signal);background:var(--signal-soft);animation:pulse 2.4s ease 1s 2}
@keyframes pulse{50%{box-shadow:0 0 0 6px var(--signal-soft)}}
.f-layers{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px;font-family:var(--mono);font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}

/* Kanban cards */
.f-cards-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:16px}
.f-cards-grid.two{grid-template-columns:repeat(auto-fill,minmax(280px,1fr))}
.f-kanban{border:1.5px solid var(--ink);background:var(--paper);display:grid;grid-template-rows:auto 1fr auto;min-width:0}
.f-kanban header{display:flex;justify-content:space-between;padding:10px 12px;border-bottom:1px solid var(--rule);background:var(--signal-soft)}
.f-kanban h3{margin:0;padding:16px 12px;font-weight:400;font-size:19px;line-height:1.25}
.f-kfoot{display:grid;gap:4px;padding:10px 12px;border-top:1px dashed var(--rule);font-size:13px;color:var(--muted)}
.f-stacks{display:flex;flex-wrap:wrap;gap:0;border:1.5px solid var(--ink);width:fit-content;max-width:100%}
.f-stacks span{padding:14px 18px;border-right:1px solid var(--rule);font-family:var(--mono);font-size:13px}
.f-stacks span:last-child{border-right:0}

.f-andon-wrap{overflow-x:auto}
.f-andon{width:100%;min-width:560px;border-collapse:collapse;border:1.5px solid var(--ink)}
.f-andon th,.f-andon td{text-align:left;padding:12px;border-bottom:1px solid var(--rule);font-size:15px}
.f-andon th{font:500 11px var(--mono);letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.f-andon td:last-child{white-space:nowrap}
.f-lamp{display:inline-block;width:10px;height:10px;border-radius:50%;margin-right:8px;vertical-align:middle;background:#2E9E62}
.f-lamp.amber{background:var(--signal)}

/* A3 */
.f-a3{border:1.5px solid var(--ink);background:var(--paper);margin-bottom:28px}
.f-titleblock{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;border-bottom:1.5px solid var(--ink)}
.f-titleblock>div{padding:10px 12px;border-right:1px solid var(--rule);min-width:0;display:grid;gap:4px}
.f-titleblock>div:last-child{border-right:0} .f-titleblock b{font-weight:600;font-size:14px}
.f-a3grid{display:grid;grid-template-columns:1fr 1fr}
.f-panel{padding:18px;border-right:1px solid var(--rule);border-bottom:1px solid var(--rule);display:grid;gap:14px;align-content:start;min-width:0}
.f-panel:nth-child(2n){border-right:0} .f-panel:nth-child(n+3){border-bottom:0}
.f-big{font-size:20px;font-weight:300;line-height:1.3;max-width:28ch}
@media (max-width:720px){.f-titleblock{grid-template-columns:1fr 1fr}.f-titleblock>div:nth-child(2){border-right:0}.f-titleblock>div:nth-child(-n+2){border-bottom:1px solid var(--rule)}
  .f-a3grid{grid-template-columns:1fr}.f-panel{border-right:0!important;border-bottom:1px solid var(--rule)!important}.f-panel:last-child{border-bottom:0!important}}

/* Skills matrix */
.f-matrix-wrap{overflow-x:auto;display:grid;gap:14px}
.f-matrix{border-collapse:collapse;min-width:520px;border:1.5px solid var(--ink)}
.f-matrix th,.f-matrix td{border:1px solid var(--rule);padding:10px 14px;text-align:center}
.f-matrix th[scope=row]{text-align:left;font-weight:400;font-size:15px}
.f-q{display:inline-block;width:18px;height:18px;border:1.5px solid var(--rule);border-radius:50%}
.f-q.on{border-color:var(--ink);background:conic-gradient(var(--ink) 0 100%)}

/* Toolbox */
.f-toolbox{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(5,1fr);border-top:1.5px solid var(--ink)}
.f-toolbox li{padding:14px 12px 0 0;display:grid;gap:6px;position:relative}
.f-toolbox li::before{content:"";position:absolute;top:-6px;left:0;width:10px;height:10px;background:var(--paper);border:1.5px solid var(--ink);border-radius:50%}
.f-toolbox li.hot::before{background:var(--signal);border-color:var(--signal)}
.f-toolbox b{font-weight:400;font-size:17px}
@media (max-width:620px){.f-toolbox{grid-template-columns:1fr 1fr}}

/* Two-column helper, close */
.split{display:grid;grid-template-columns:minmax(0,420px) minmax(0,1fr);gap:clamp(24px,5vw,64px);align-items:center}
@media (max-width:760px){.split{grid-template-columns:1fr}}
.close{display:grid;gap:28px}
.contact{display:flex;flex-wrap:wrap;gap:12px}
.contact span{font-family:var(--mono);font-size:14px;border:1.5px solid var(--ink);padding:12px 16px;user-select:all}
.curious{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.curious li{display:flex;gap:14px;font-size:17px}
.curious li::before{content:"";flex:0 0 14px;height:10px;margin-top:8px;background:var(--signal)}
footer{border-top:1px solid var(--rule);padding-block:24px 48px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .draw{animation:none;stroke-dashoffset:0}.tick,.card-text,.card-fill{animation:none;opacity:1}
  .f-cards{display:none}.f-mach,.f-zone{transition:none}.f-chain li.hot{animation:none}
}

/* Chapter intro paragraph */
.intro{margin-top:22px;font-size:17px;line-height:1.55}
/* Expandable kanban cards: tap the card; + turns to × */
details.f-kanban{display:block;align-self:start}
details.f-kanban>summary{list-style:none;cursor:pointer;display:grid;grid-template-rows:auto auto auto}
details.f-kanban>summary::-webkit-details-marker{display:none}
details.f-kanban>summary:focus-visible{outline:2px solid var(--signal);outline-offset:3px}
.f-plus{display:inline-grid;place-items:center;width:22px;height:22px;border:1px solid var(--ink);border-radius:50%;font:400 16px/1 var(--mono);transition:transform .25s ease;color:var(--ink)}
details[open] .f-plus{transform:rotate(45deg);background:var(--signal);border-color:var(--signal);color:var(--on-signal)}
details.f-kanban:hover{box-shadow:4px 4px 0 var(--signal-soft)}
.f-kmore{padding:4px 12px 16px;border-top:1px solid var(--rule);display:grid;gap:10px;font-size:14.5px;line-height:1.5;animation:fade .3s ease}
.f-kmore p{max-width:none}
.f-kmore b{display:block;font:500 10.5px/1.4 var(--mono);letter-spacing:.12em;text-transform:uppercase;color:var(--ink);margin-top:10px}

/* Story arc */
.f-story{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:0;counter-reset:s}
.f-story li{position:relative;padding:26px 22px 0 0;border-top:1.5px solid var(--ink)}
.f-story li::before{content:"";position:absolute;top:-7px;left:0;width:12px;height:12px;border-radius:50%;background:var(--paper);border:1.5px solid var(--ink)}
.f-story li:last-child::before{background:var(--signal);border-color:var(--signal)}
.f-story p{margin-top:10px;font-size:17px;line-height:1.5;color:var(--ink)}
@media (max-width:720px){.f-story{grid-template-columns:1fr}.f-story li{border-top:0;border-left:1.5px solid var(--ink);padding:0 0 26px 22px}.f-story li::before{top:2px;left:-7px}}
/* Captions under visuals; carry-forward line */
.cap{margin-top:16px;font-size:14.5px}
.carry{margin-bottom:14px;font-size:15px}

/* Mini project figures in expanded cards */
.mv-wrap{border-top:1px dashed var(--rule);padding-top:12px}
.mv{width:100%;height:auto;display:block}
.mv-t{font:500 8.5px/1 var(--mono);letter-spacing:.08em;fill:var(--muted)}
.mv-t.mv-hot{fill:var(--signal)}
.mv-ink{stroke:var(--ink);stroke-width:1}
.mv-fill{fill:var(--signal)}
.mv-soft{fill:var(--signal-soft)}
.mv-hollow{fill:none}
.mv-box{fill:none;stroke:var(--rule)}
.mv-rule{stroke:var(--rule);fill:none}
.mv-dash{stroke-dasharray:3 3;fill:none}
.mv-now{stroke:var(--signal);stroke-width:1.5}
.mv-line{fill:none;stroke:var(--ink);stroke-width:1.5;stroke-dasharray:1;stroke-dashoffset:1;animation:mvdraw 2s ease forwards}
.mv-hotline{stroke:var(--signal)}
.mv-pick{fill:none;stroke:var(--signal);stroke-width:2;animation:mvblink 1.6s ease-in-out infinite}
.mv-note{display:block;margin-top:6px;font-size:9.5px}
.mv-scroll{animation:mvscroll 14s linear infinite}
.mv-spin{fill:none;transform-box:fill-box;transform-origin:center;animation:mvspin 3s linear infinite}
.mv-grow{transform-box:fill-box;transform-origin:left;animation:mvgrow 1.2s ease both}
.mv-rise{transform-box:fill-box;transform-origin:bottom;animation:mvrise 1s ease both}
.mv-pulse{animation:mvrise 1s ease both,mvblink 1.8s ease-in-out 1s infinite}
.mv-flow{stroke-dasharray:4 4;animation:mvdash 1.2s linear infinite}
@keyframes mvdash{to{stroke-dashoffset:-8}}
@keyframes mvdraw{to{stroke-dashoffset:0}}
@keyframes mvblink{50%{opacity:.35}}
@keyframes mvscroll{to{transform:translateX(-320px)}}
@keyframes mvspin{to{transform:rotate(360deg)}}
@keyframes mvgrow{from{transform:scaleX(0)}}
@keyframes mvrise{from{transform:scaleY(0)}}
@media (prefers-reduced-motion:reduce){.mv *{animation:none!important}.mv animate{display:none}}

/* World footprint */
.w-chips{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px}
.w-chip{font:inherit;cursor:pointer;background:var(--paper);color:var(--ink);border:1.5px solid var(--ink);padding:8px 12px;display:grid;text-align:left;gap:2px}
.w-chip b{font:500 13px/1 var(--mono)}
.w-chip span{font:400 10px/1.2 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.w-chip[aria-pressed="true"]{background:var(--signal);border-color:var(--signal);color:var(--on-signal)}
.w-chip[aria-pressed="true"] span{color:var(--on-signal)}
.w-map svg{width:100%;height:auto;display:block}
.w-land circle{fill:var(--ink);opacity:.16;transition:fill .4s,opacity .4s}
.w-land circle.on{fill:var(--signal);opacity:.9}
.w-arc{fill:none;stroke:var(--signal);stroke-width:1.5;stroke-dasharray:5 6;opacity:0;transition:opacity .4s}
.w-arc.on{opacity:.9;animation:mvdash 1.4s linear infinite}
.w-mark{cursor:pointer;opacity:0;pointer-events:none;transition:opacity .4s}
.w-mark.on{opacity:1;pointer-events:auto}
.w-dot{fill:var(--paper);stroke:var(--signal);stroke-width:2.5}
.w-mark.remote .w-dot{stroke-dasharray:3 2}
.w-mark.sel .w-dot{fill:var(--signal)}
.w-hit{fill:transparent}
.w-pulse{fill:none;stroke:var(--signal);stroke-width:1.5;transform-box:fill-box;transform-origin:center;animation:wpulse 2.4s ease-out infinite}
.w-mark text{font:500 22px/1 var(--mono);letter-spacing:.06em;fill:var(--ink);paint-order:stroke;stroke:var(--paper);stroke-width:6px}
.w-mark:focus-visible .w-dot{stroke-width:4}
@keyframes wpulse{from{transform:scale(.6);opacity:.9}to{transform:scale(2.2);opacity:0}}
.w-panel{margin-top:18px;border-top:1.5px solid var(--ink);padding-top:14px;min-height:96px}
.w-panel ul{list-style:none;margin:10px 0 0;padding:0;display:grid;gap:12px}
.w-panel p{color:var(--ink);font-size:16px;max-width:60ch;margin-top:6px}
.w-panel .w-sum{font-size:19px;font-weight:300}
@media (prefers-reduced-motion:reduce){.w-pulse,.w-arc.on{animation:none}}
@media (min-width:900px){.w-mark text{font-size:15px}}
.w-mark .w-mk{transform:scale(var(--wk,1))}

/* Interactive heijunka board */
.hb{display:grid;gap:8px}
.hb-row{display:grid;grid-template-columns:minmax(120px,240px) 1fr 34px;gap:12px;align-items:center}
.hb-label{font-size:14px;line-height:1.3}
.hb-slots{display:grid;grid-template-columns:repeat(var(--n),minmax(0,1fr));gap:4px;max-width:520px}
.hb-slot{appearance:none;cursor:pointer;height:26px;border:1.5px solid var(--ink);background:var(--paper);padding:0;animation:fade .4s ease both}
.hb-slot.k1{background:var(--ink);opacity:.82}
.hb-slot.ey{background:repeating-linear-gradient(135deg,var(--ink) 0 2px,transparent 2px 6px)}
.hb-slot.k2{background:var(--signal);border-color:var(--signal)}
.hb-slot.sel{outline:2.5px solid var(--signal);outline-offset:2px}
.hb-slot:focus-visible{outline:2.5px solid var(--signal);outline-offset:2px}
.hb-n{font:500 14px/1 var(--mono);text-align:right}
.hb-n.big{font-size:26px}
.hb-row.total{border-top:1.5px solid var(--ink);padding-top:10px;margin-top:4px}
@media (max-width:620px){.hb-row{grid-template-columns:1fr 28px}.hb-label{grid-column:1/-1}.hb-slots{grid-column:1}.hb-slot{height:22px}}

button.f-q{appearance:none;border:0;padding:0;cursor:pointer}
button.f-q.sel{outline:2.5px solid var(--signal);outline-offset:3px}
button.f-q:focus-visible{outline:2.5px solid var(--signal);outline-offset:3px}
@media (max-width:620px){.f-matrix{min-width:0;width:100%}.f-matrix th,.f-matrix td{padding:9px 4px}.f-matrix th[scope=row]{font-size:13px;padding-left:8px;line-height:1.3}.f-q{width:16px;height:16px}}

/* Paragon engagement */
.pg{border:1.5px solid var(--ink);background:var(--paper)}
.pg-head{display:flex;justify-content:space-between;gap:16px;align-items:flex-start;padding:16px 18px;border-bottom:1px solid var(--rule);background:var(--signal-soft)}
.pg-head h3{margin:6px 0 0;font-weight:400;font-size:clamp(20px,2.6vw,26px);line-height:1.2}
.pg-period{white-space:nowrap}
.pg-over{padding:16px 18px 4px;color:var(--ink);font-size:16.5px;line-height:1.55;max-width:70ch}
.pg-time{position:relative;padding:34px 18px 18px}
.pg-axis{position:absolute;left:18px;right:18px;top:12px;height:16px}
.pg-axis span{position:absolute;transform:translateX(-50%);font:500 11px/1 var(--mono);color:var(--muted)}
.pg-row{display:grid;gap:6px;margin-top:12px}
.pg-lbl{display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap}.pg-lbl .f-mono:first-child{color:var(--ink)}
.pg-track{position:relative;height:38px;border-bottom:1px solid var(--rule)}
.pg-track i{position:absolute;top:-6px;bottom:0;border-left:1px dashed var(--rule)}
.pg-bar{position:absolute;top:4px;height:30px;display:flex;align-items:center;justify-content:flex-end;gap:6px;padding:0 8px;cursor:pointer;font:500 10.5px/1 var(--mono);color:var(--ink);background:var(--signal-soft);border:1.5px solid var(--ink);overflow:hidden;white-space:nowrap;transform-origin:left;animation:mvgrow .9s ease both}
.pg-bar span{overflow:hidden;text-overflow:ellipsis}
.pg-bar[aria-expanded="true"]{background:var(--signal);border-color:var(--signal);color:var(--on-signal)}
.pg-bar[aria-expanded="true"] .f-plus{transform:rotate(45deg);border-color:var(--on-signal);color:var(--on-signal)}
.pg-bar:focus-visible{outline:2.5px solid var(--signal);outline-offset:3px}
.pg-detail{border-top:1px solid var(--rule);padding:14px 18px 18px}
.pg-detail .cap{margin:0}
.pg-ohead{display:grid;gap:4px;margin-bottom:6px}
.pg-ohead h4{margin:0;font-weight:400;font-size:21px}
.pg-ogrid{display:grid;grid-template-columns:1fr 1fr;gap:20px;align-items:start}
.pg-ogrid .f-kmore{padding:0;border:0}
.pg-fig{border:1px dashed var(--rule);padding:12px}
.mv-card{animation:mvcard 4s ease infinite both}
@keyframes mvcard{0%{opacity:0;transform:translateY(-6px)}12%,80%{opacity:1;transform:none}100%{opacity:0}}
.mv-card{transform-box:fill-box}
@media (max-width:720px){.pg-ogrid{grid-template-columns:1fr}.pg-head{flex-direction:column}.pg-bar{font-size:9.5px;padding:0 5px}}
.mv-flow{fill:none}

/* Hero */
.hero-sub{margin-top:22px;font-size:clamp(17px,2vw,21px);line-height:1.5;max-width:46ch}
.proof{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;margin:clamp(32px,5vw,52px) 0 0;border-top:1.5px solid var(--ink);border-bottom:1px solid var(--rule)}
.proof>div{padding:16px 12px 14px 0;border-right:1px dashed var(--rule)}
.proof>div:last-child{border-right:0}
.proof dt{font:400 clamp(34px,5vw,56px)/1 var(--mono);color:var(--signal)}
.proof dd{margin:8px 0 0;font:500 11px/1.35 var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
@media (max-width:720px){.proof{grid-template-columns:repeat(2,1fr)}.proof>div{border-right:0;border-bottom:1px dashed var(--rule);padding-left:0}.proof>div:nth-child(odd){border-right:1px dashed var(--rule)}.proof>div:nth-child(even){padding-left:14px}.proof>div:last-child{border-bottom:0}}
/* Capability matrix */
.cm{width:100%;border-collapse:collapse;border:1.5px solid var(--ink)}
.cm th,.cm td{border:1px solid var(--rule);padding:8px 6px;text-align:center;transition:opacity .3s}
.cm thead th{padding:10px 6px}
.cm th[scope=row]{text-align:left;font-weight:400;font-size:15px;line-height:1.3;padding-left:12px}
.cm-code{display:inline-block;width:20px;font:500 12px/1 var(--mono);color:var(--signal)}
.cm td.tot{background:var(--signal-soft)}
.cm .dim{opacity:.28}
.cm-n{appearance:none;cursor:pointer;width:var(--d);height:var(--d);border-radius:50%;border:1.5px solid var(--ink);background:var(--ink);color:var(--paper);font:500 13px/1 var(--mono);display:inline-grid;place-items:center;padding:0;animation:fade .5s ease both}
.cm td.tot .cm-n{background:var(--signal);border-color:var(--signal);color:var(--on-signal)}
.cm-n.sel,.cm-n:focus-visible{outline:2.5px solid var(--signal);outline-offset:3px}
.cm-0{color:var(--muted);font:400 13px/1 var(--mono)}
.cm-q{font-style:italic}
.cm-list{list-style:none;margin:12px 0 0;padding:0;display:grid;gap:8px}
.cm-list li{display:flex;justify-content:space-between;gap:12px;border-top:1px dashed var(--rule);padding-top:8px;font-size:15px}
.cm-list li .f-mono{white-space:nowrap}
@media (max-width:620px){.cm th[scope=row]{font-size:12.5px;padding-left:6px}.cm th,.cm td{padding:6px 3px}.cm-code{width:16px}.cm-list li{flex-direction:column;gap:2px}}
.cm thead .f-mono{white-space:nowrap}
@media (max-width:620px){.cm thead .f-mono{font-size:9px;letter-spacing:.04em}}
.cm thead th{line-height:1.3}.cm-ch{display:block;color:var(--ink)}.cm-yr{display:block;font-size:9.5px;margin-top:3px}

/* Engagement strips */
.st-list{border-top:1.5px solid var(--ink)}
.st{border-bottom:1px solid var(--rule)}
.st-head{list-style:none;cursor:pointer;display:grid;grid-template-columns:44px minmax(0,1fr) minmax(0,260px) 24px;gap:16px;align-items:center;padding:16px 4px}
.st-head::-webkit-details-marker{display:none}
.st-head:hover{background:var(--signal-soft)}
.st-head:focus-visible{outline:2px solid var(--signal);outline-offset:2px}
.st-n{color:var(--signal);font-size:13px}
.st-t{display:grid;gap:4px}
.st-t b{font-weight:400;font-size:clamp(17px,2vw,20px);line-height:1.25}
.st-meta{font-size:14px;color:var(--muted)}
.st-tool{font-size:10.5px;line-height:1.5}
.st[open]>.st-head{background:var(--signal-soft)}
.st[open] .f-plus{transform:rotate(45deg);background:var(--signal);border-color:var(--signal);color:var(--on-signal)}
.st-body{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:24px;padding:6px 4px 22px 64px;animation:fade .3s ease}
.st-body .st-text{padding:0;border:0}
.st-fig{border:1px dashed var(--rule);padding:12px;align-self:start}
@media (max-width:720px){.st-head{grid-template-columns:30px minmax(0,1fr) 24px;gap:10px;padding:14px 2px}.st-tool{grid-column:2;grid-row:2}.st-body{grid-template-columns:1fr;padding:4px 2px 20px 40px}}

/* Downloads */
.bar-r{display:flex;align-items:center;gap:8px}
.dl{position:relative;display:inline-block}
.dl-btn{appearance:none;cursor:pointer;width:34px;height:28px;display:grid;place-items:center;border:1px solid var(--ink);background:var(--paper);color:var(--ink);padding:0}
.dl-btn svg{width:16px;height:16px}
.dl-btn[aria-expanded="true"]{background:var(--signal);border-color:var(--signal);color:var(--on-signal)}
.dl-menu{position:absolute;right:0;top:calc(100% + 8px);width:min(300px,86vw);background:var(--paper);border:1.5px solid var(--ink);box-shadow:6px 6px 0 var(--signal-soft);display:grid;z-index:10}
.dl-menu[hidden]{display:none}
.dl-item{display:flex;align-items:stretch;border-bottom:1px solid var(--rule)}
.dl-item:last-child{border-bottom:0}
.dl-item a{text-decoration:none;color:var(--ink)}
.dl-item>a:first-child{flex:1;display:grid;gap:3px;padding:12px 14px}
.dl-item>a:first-child:hover,.dl-alt:hover{background:var(--signal-soft)}
.dl-item b{font-weight:500;font-size:15px}
.dl-item span{font:500 10.5px/1.3 var(--mono);letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.dl-alt{display:grid;place-items:center;padding:0 12px;border-left:1px dashed var(--rule);font:500 11px var(--mono);text-transform:uppercase;letter-spacing:.06em}
.dl-inline{margin-top:28px;display:grid;gap:10px}
.dl-inline .dl-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:12px;max-width:640px}
.dl-inline .dl-item{border:1.5px solid var(--ink)}
@media (max-width:420px){.bar nav a{width:30px}}
.close{grid-template-columns:minmax(0,1fr)}.close>*{min-width:0}.contact span{overflow-wrap:anywhere}
.dl-inline{grid-template-columns:minmax(0,1fr)}.dl-inline .dl-list{grid-template-columns:repeat(auto-fit,minmax(min(240px,100%),1fr))}
@media (max-width:720px){.proof>div:nth-last-child(-n+2){border-bottom:0}}

/* Contact icons */
.lk{display:inline-flex;gap:8px;align-items:center}
.lk a{display:inline-grid;place-items:center;width:34px;height:34px;border:1px solid var(--rule);color:var(--ink);text-decoration:none}
.lk a:hover,.lk a:focus-visible{border-color:var(--signal);color:var(--signal);outline:none}
.lk svg{width:18px;height:18px}
.lk.big{gap:12px;flex-wrap:wrap}
.lk.big a{width:auto;height:auto;display:inline-flex;gap:10px;padding:12px 16px;border:1.5px solid var(--ink);font:500 12px var(--mono);letter-spacing:.1em;text-transform:uppercase}
.lk.big svg{width:20px;height:20px}
footer{align-items:center}
/* Hero ends at the proof strip: one divider, no extra gap */
.hero{padding-bottom:0}
.proof{border-bottom:0;margin-bottom:0}
.hero + section{margin-top:clamp(28px,4vw,44px)}

/* Header name: main title */
.bar .sheet>a.mono{font:600 15px/1 var(--sans);letter-spacing:.07em;text-transform:uppercase;color:var(--ink)}
@media (max-width:400px){.bar .sheet>a.mono{font-size:13.5px;letter-spacing:.05em}}
/* Footer: contact icons only, centred */
footer{justify-content:center}
/* Toolbox on phones: a vertical timeline */
@media (max-width:620px){
  .f-toolbox{grid-template-columns:1fr;border-top:0;border-left:1.5px solid var(--ink);margin-left:6px}
  .f-toolbox li{padding:0 0 18px 20px;gap:2px}
  .f-toolbox li:last-child{padding-bottom:0}
  .f-toolbox li::before{top:3px;left:-6px}
}