/* Personal site: control-room look. Cobalt field, ink and paper bands, traffic-light signals used only for meaning. */
:root{
  --cobalt:#2c4380;--ink:#131b30;--paper:#f4f6fa;--mist:#e1e7f1;--white:#fff;
  --go:#4aa380;--stop:#d9707a;--stopd:#b8434d;--slate:#34405f;--hold:#e6bf6a;
  --bg:var(--paper);--fg:var(--ink);--muted:#4b5568;--rule:#cdd5e6;--surface:#fff;--accent:var(--cobalt);--on-accent:#fff;
  --display:Bahnschrift,"DIN Alternate","Avenir Next Condensed","Arial Narrow",system-ui,sans-serif;
  --sans:"Segoe UI Variable Text","Segoe UI",system-ui,-apple-system,Roboto,sans-serif;
  --mono:ui-monospace,"Cascadia Code",Consolas,monospace;
  --wrap:74rem;--r:14px;--ease:cubic-bezier(.2,.7,.1,1);
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){--bg:#0f1526;--fg:#eef1f7;--muted:#a7b2cc;--rule:#2a3556;--surface:#18213b;--accent:#9db0e8;--on-accent:#0f1526;--paper:#18213b;--mist:#1c2744}}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:5rem}
body{margin:0;background:var(--bg);color:var(--fg);font:1.0625rem/1.6 var(--sans);-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration-thickness:2px;text-underline-offset:.2em;text-decoration-color:var(--accent)}
a:focus-visible,button:focus-visible{outline:3px solid var(--hold);outline-offset:3px;border-radius:6px}
mark{background:var(--hold);color:var(--ink);padding:0 .3em;border-radius:4px}
.skip{position:absolute;left:-999px}
.skip:focus{left:1rem;top:1rem;background:var(--bg);padding:.5rem 1rem;z-index:60}
.draft-banner{background:var(--hold);color:var(--ink);padding:.35rem 1rem;font-size:.8rem;text-align:center;font-weight:600}
.progress{position:fixed;top:0;left:0;height:4px;width:100%;transform:scaleX(0);transform-origin:0 50%;background:var(--hold);z-index:70}

/* nav: a floating pill */
.bar{position:sticky;top:.6rem;z-index:50;display:flex;align-items:center;justify-content:space-between;gap:1rem;
  margin:.6rem auto 0;width:min(calc(100% - 1.2rem),var(--wrap));padding:.35rem .5rem .35rem .6rem;
  background:var(--ink);color:#fff;border-radius:999px;box-shadow:0 8px 30px -10px rgba(19,27,48,.5);font-size:.9rem}
.bar nav{overflow-x:auto;scrollbar-width:none;min-width:0}
.bar ol{display:flex;gap:.15rem;list-style:none;margin:0;padding:0;align-items:center}
.bar a{display:block;padding:.45rem .85rem;border-radius:999px;text-decoration:none;color:#cdd5e6;white-space:nowrap;transition:background .2s,color .2s}
.bar a:hover{color:#fff;background:rgba(255,255,255,.12)}
.bar a[aria-current="true"]{background:var(--hold);color:var(--ink);font-weight:700}
.bar li.sep{width:1px;align-self:stretch;background:rgba(255,255,255,.25);margin:.35rem .5rem}
.tools{display:flex;gap:.6rem;align-items:center;flex-shrink:0;padding-right:.4rem}
.clock{font:.78rem var(--mono);color:#aebbd8;font-variant-numeric:tabular-nums}
.clock::before{content:"";display:inline-block;width:.5rem;height:.5rem;border-radius:50%;background:var(--go);margin-right:.45rem;animation:pulse 2s infinite}
.lang{border:1px solid rgba(255,255,255,.35);padding:.25rem .7rem;border-radius:999px;font:.75rem var(--mono);color:#fff}
@keyframes pulse{50%{opacity:.25}}

main{position:relative;max-width:var(--wrap);margin:0 auto;padding:0 1rem}
section{padding:5rem 0 3rem;position:relative}
section[hidden]{display:none}
section>.num{display:none}
h1,h2,h3{font-family:var(--display);font-weight:800;font-variation-settings:"wght" 800,"wdth" 85;letter-spacing:-.01em;line-height:1;margin:0}
h2{font-size:clamp(2.4rem,6.5vw,5.2rem);margin-bottom:1.25rem;max-width:16ch}
h3{font-size:1.3rem;line-height:1.15}
.eyebrow{font:600 .85rem/1.2 var(--sans);color:var(--accent);margin:0 0 1rem}
.note,.asof{color:var(--muted);font-size:.95rem;max-width:42rem}
.sub{font:800 1.4rem/1 var(--display);margin:3rem 0 1rem}
.thesis{font:600 clamp(1.25rem,2.4vw,1.8rem)/1.3 var(--sans);max-width:40rem;margin:0 0 1.5rem}
p{max-width:44rem}

/* full-bleed bands */
.band{isolation:isolate;padding:6rem 0 5rem}
.band::before{content:"";position:absolute;inset:0 calc(50% - 50vw);background:var(--band,transparent);z-index:-1}
.band-agents{--band:var(--paper)}
.band-security{--band:var(--ink);--fg:#fff;--muted:#bcc6de;--surface:rgba(255,255,255,.07);--rule:rgba(255,255,255,.2);--accent:var(--hold);color:#fff}
.band-compliance{--band:#efe6cf;--fg:var(--ink);--muted:#3b3317;--surface:rgba(19,27,48,.08);--rule:rgba(19,27,48,.3);--accent:var(--ink);color:var(--ink)}
.band-data{--band:var(--mist)}
.band h2::after{content:"";display:block;width:4.5rem;height:.5rem;background:var(--accent);margin-top:1rem;border-radius:99px}

/* hero */
.hero-wrap{position:relative;isolation:isolate;color:#fff}
.hero-wrap::before{content:"";position:absolute;inset:0 calc(50% - 50vw);background:var(--cobalt);z-index:-1}
.hero-wrap::after{content:"";position:absolute;inset:0 calc(50% - 50vw);z-index:-1;pointer-events:none;
  background:radial-gradient(40rem 30rem at 12% 0%,rgba(230,191,106,.10),transparent 60%),radial-gradient(34rem 30rem at 100% 100%,rgba(217,112,122,.12),transparent 60%)}
.hero-wrap:not(.page) #top{padding:4.5rem 0 4rem;display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);gap:3rem;align-items:center;min-height:82vh}
.hero-wrap:not(.page) #top h1{font-size:clamp(3rem,8vw,7rem);letter-spacing:-.02em;line-height:.92;margin:0 0 1.5rem;animation:rise .9s var(--ease) both}
.hero-wrap:not(.page) #top .lede{font:500 clamp(1.15rem,2vw,1.5rem)/1.4 var(--sans);color:#e8ecf4;max-width:34rem;margin:0 0 1rem}
.hero-wrap:not(.page) #top p{color:#d8deea}
.hero-wrap:not(.page) #top .byline{color:#fff;font-size:.95rem}
.hero-wrap:not(.page) #top .byline a{text-decoration-color:var(--hold)}
@keyframes rise{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:none}}
.btn{display:inline-block;padding:.85rem 1.5rem;border-radius:999px;background:var(--hold);color:var(--ink);font-weight:800;text-decoration:none;border:2px solid var(--ink);box-shadow:4px 4px 0 var(--ink);transition:transform .15s,box-shadow .15s;font-family:var(--sans);cursor:pointer}
.btn:hover{transform:translate(-2px,-2px);box-shadow:6px 6px 0 var(--ink)}
.btn:active{transform:translate(2px,2px);box-shadow:1px 1px 0 var(--ink)}
.btn.ghost{background:transparent;color:#fff;border-color:#fff;box-shadow:4px 4px 0 rgba(255,255,255,.4)}
.cta{display:flex;flex-wrap:wrap;gap:.9rem;margin:1.5rem 0!important;max-width:none}
.chips{display:flex;flex-wrap:wrap;gap:.5rem;list-style:none;padding:0;margin:1.5rem 0 0}
.chips li{border:1.5px solid currentColor;padding:.3rem .85rem;border-radius:999px;font-size:.85rem;font-weight:600}
.chips a{text-decoration:none}
.chips li:hover{background:var(--hold);color:var(--ink);border-color:var(--hold)}

/* gate lab: the one memorable thing */
.lab{background:#fff;color:var(--ink);border:3px solid var(--ink);border-radius:20px;box-shadow:10px 10px 0 var(--ink);padding:1.25rem 1.25rem 1rem;max-width:34rem;justify-self:end;width:100%}
.lab-title{display:flex;justify-content:space-between;align-items:baseline;gap:1rem;font:800 1.25rem var(--display);margin:0 0 .75rem}
.lab-title small{font:600 .75rem var(--sans);color:#566079}
.lab-lane{position:relative;list-style:none;margin:0 0 1rem;padding:0;display:grid;grid-template-columns:repeat(5,1fr);gap:.4rem}
.lab-lane::before{content:"";position:absolute;left:10%;right:10%;top:1.55rem;height:4px;background:repeating-linear-gradient(90deg,var(--ink) 0 8px,transparent 8px 14px);z-index:0}
.stop{position:relative;z-index:1;text-align:center;font:700 .78rem/1.15 var(--sans)}
.stop i{display:grid;place-items:center;width:3.1rem;height:3.1rem;margin:0 auto .35rem;border-radius:50%;background:var(--paper);border:3px solid var(--ink);font-style:normal;font-size:1.25rem;transition:background .25s,transform .25s;color:var(--ink)}
.stop.on i{background:var(--hold);transform:scale(1.15)}
.stop.ok i{background:var(--go);color:var(--ink)}
.stop.no i{background:var(--stopd);color:#fff;animation:shake .4s}
@keyframes shake{25%{transform:translateX(-4px)}75%{transform:translateX(4px)}}
.token{position:absolute;top:.45rem;left:calc(10% - 1.1rem);width:2.2rem;height:2.2rem;border-radius:8px;background:var(--cobalt);border:3px solid var(--ink);z-index:2;display:grid;place-items:center;color:#fff;font-size:.9rem;transition:left .6s var(--ease),background .25s,opacity .3s;pointer-events:none}
.token[hidden]{display:none}
.token.risky{background:var(--stopd)}
.lab-actions{display:flex;flex-wrap:wrap;gap:.5rem;margin:0 0 .9rem}
.lab-actions button{font:700 .85rem var(--sans);padding:.5rem .9rem;border-radius:999px;border:2px solid var(--ink);background:var(--paper);color:var(--ink);cursor:pointer;transition:transform .12s,background .15s}
.lab-actions button:hover{background:var(--hold);transform:translateY(-2px)}
.lab-actions button:disabled{opacity:.5;cursor:wait;transform:none}
.lab-log{list-style:none;margin:0;padding:.7rem .8rem;background:var(--ink);color:#e0e6f1;border-radius:10px;font:.8rem/1.5 var(--mono);height:8.2rem;overflow:hidden;display:flex;flex-direction:column;justify-content:flex-end}
.lab-log li{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.lab-log li.ok::before{content:"✓ ";color:var(--go)}
.lab-log li.no::before{content:"✕ ";color:var(--stop)}
.lab-log li.info::before{content:"· ";color:var(--hold)}
.lab-score{display:flex;gap:1.2rem;font:700 .8rem var(--sans);margin:.7rem 0 0;color:#566079}
.lab-score b{color:var(--ink);font:800 1.1rem var(--display);margin-right:.25rem}
.lab-note{font-size:.72rem;color:#6b7488;margin:.4rem 0 0;max-width:none}
html:not(.js) .lab-actions,html:not(.js) .token,html:not(.js) .lab-score{display:none}

/* ticker */
.marquee{position:relative;overflow:hidden;background:var(--hold);color:var(--ink);padding:.9rem 0;transform:rotate(-.8deg) scale(1.02);margin:2.5rem 0 1rem;border-block:3px solid var(--ink)}
.marquee div{display:flex;gap:2rem;width:max-content;animation:scroll 38s linear infinite;font:800 clamp(1.3rem,3vw,2rem)/1 var(--display)}
.marquee span::after{content:"■";margin-left:2rem;font-size:.6em;vertical-align:middle}
.marquee:hover div{animation-play-state:paused}
@keyframes scroll{to{transform:translateX(-50%)}}

/* ideas: plain stacked statements */
.ideas{list-style:none;padding:0;margin:0 0 1.5rem;display:grid;gap:.6rem;max-width:44rem}
.ideas li{position:relative;padding:.85rem 1.1rem;background:var(--surface);border:2px solid var(--rule);border-radius:var(--r);border-left:8px solid var(--accent);transition:transform .2s var(--ease)}
.ideas li:hover{transform:translateX(6px)}
.more{display:flex;flex-wrap:wrap;gap:.7rem;margin:1.25rem 0 0;max-width:none}
.more a.src{display:inline-block;padding:.55rem 1.1rem;border-radius:999px;border:2px solid currentColor;text-decoration:none;font-weight:700;transition:background .2s,color .2s}
.more a.src:hover{background:var(--accent);color:var(--on-accent);border-color:var(--accent)}
.band-security .more a.src:hover{color:var(--ink)}
.src{font-weight:700}

/* projects: varied tiles, no identical cards */
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(15rem,1fr));gap:1rem;list-style:none;padding:0;margin:0}
.card{position:relative;display:flex;flex-direction:column;gap:.55rem;padding:1.4rem;background:var(--surface);border:2.5px solid var(--ink);border-radius:var(--r);box-shadow:5px 5px 0 var(--ink);transition:transform .15s,box-shadow .15s}
.card:nth-child(4n+1){background:var(--hold);color:var(--ink)}
.card:nth-child(4n+2){background:var(--cobalt);color:#fff}
.card:nth-child(4n+3){background:#fff;color:var(--ink)}
.card:nth-child(4n){background:var(--slate);color:#fff}
.card p{margin:0;font-size:.95rem;color:inherit}
.card .meta{font:700 .8rem var(--sans);opacity:.85}
.card:hover{transform:translate(-3px,-3px);box-shadow:8px 8px 0 var(--ink)}
.card a.src,.card span.src{margin-top:auto;padding-top:.4rem;font-size:.85rem;font-weight:700;opacity:.9}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .card{border-color:#fff;box-shadow:5px 5px 0 #fff}:root:not([data-theme="light"]) .card:hover{box-shadow:8px 8px 0 #fff}}

/* writing */
.filters{display:flex;flex-wrap:wrap;gap:.5rem;margin:0 0 1.5rem}
.filters[hidden]{display:none}
.filters button{font:700 .85rem var(--sans);padding:.45rem 1rem;border:2px solid var(--ink);background:transparent;color:var(--fg);border-radius:999px;cursor:pointer;transition:background .15s}
.filters button:hover{background:var(--hold);color:var(--ink)}
.filters button[aria-pressed="true"]{background:var(--ink);color:#fff}
.articles{list-style:none;padding:0;margin:0}
.articles li{display:grid;grid-template-columns:8rem 1fr auto;gap:1rem;align-items:baseline;padding:1.4rem 0;border-bottom:2px solid var(--rule)}
.articles li[hidden]{display:none}
.articles time,.articles .kind{font:700 .85rem var(--sans);color:var(--muted)}
.articles h3{font-size:clamp(1.4rem,2.6vw,2.1rem)}
.articles h3 a{text-decoration:none;background:linear-gradient(var(--hold),var(--hold)) 0 92%/0 .4em no-repeat;transition:background-size .3s var(--ease)}
.articles h3 a:hover{background-size:100% .4em}
.articles p{margin:.4rem 0 0;color:var(--muted);font-size:.95rem}
.tag{font:700 .75rem var(--sans);background:var(--cobalt);color:#fff;padding:.3rem .65rem;border-radius:999px;white-space:nowrap}

/* about / career */
section.first{padding-top:4.5rem}
h1.name{font-size:clamp(3rem,9vw,7.5rem);letter-spacing:-.02em;line-height:.92;margin:0 0 1.25rem}
.lede{font:500 clamp(1.2rem,2.2vw,1.7rem)/1.4 var(--sans);max-width:40rem;margin:0 0 1.25rem}
.timeline{list-style:none;padding:0 0 0 1.8rem;margin:0 0 2rem;position:relative;display:grid;gap:1rem}
.timeline::before{content:"";position:absolute;left:.4rem;top:.5rem;bottom:.5rem;width:4px;background:var(--cobalt);border-radius:4px}
.timeline li{position:relative;display:grid;grid-template-columns:7rem 1fr;gap:1rem;background:var(--surface);border:2px solid var(--rule);border-radius:var(--r);padding:1.2rem}
.timeline li::before{content:"";position:absolute;left:-1.75rem;top:1.5rem;width:.9rem;height:.9rem;border-radius:50%;background:var(--hold);border:3px solid var(--ink)}
.timeline time{font:800 1rem var(--display);color:var(--accent)}
.timeline p{margin:.4rem 0 .6rem;color:var(--muted)}
.path{list-style:none;padding:0;margin:0;max-width:50rem}
.path li{display:grid;grid-template-columns:11rem 1fr;gap:1rem;padding:.9rem 0;border-bottom:2px solid var(--rule)}
.path span{font:700 .9rem var(--sans);color:var(--accent)}
.now{list-style:none;padding:0;margin:0;display:grid;gap:1rem;max-width:46rem}
.now li{font:600 clamp(1.15rem,2vw,1.5rem)/1.35 var(--sans);padding:1rem 0;border-top:3px solid var(--ink)}
.offduty{display:inline-block;margin:.5rem 0 0;padding:.55rem 1.1rem;border-radius:999px;background:var(--hold);color:var(--ink);font-weight:700;border:2px solid var(--ink);box-shadow:3px 3px 0 var(--ink);transition:transform .2s var(--ease)}
.offduty:hover{transform:rotate(-2deg) scale(1.04)}

/* articles */
.post{max-width:44rem;margin:0 auto;padding:4rem 0 3rem}
.post h1{font-size:clamp(2.4rem,6.5vw,5rem);letter-spacing:-.02em;line-height:.95;margin:0 0 1.5rem}
.post h2{font-size:clamp(1.7rem,3.4vw,2.4rem);margin:2.5rem 0 1rem;max-width:none}
.post p,.post li{font-size:1.15rem;line-height:1.75}
.post-foot{margin-top:3rem;padding-top:1.5rem;border-top:2px solid var(--rule);color:var(--muted);font-size:.9rem}

/* figures */
.fig{margin:2rem 0;padding:1.25rem;background:var(--surface);border:2.5px solid var(--ink);border-radius:var(--r);box-shadow:5px 5px 0 var(--ink);max-width:58rem;overflow-x:auto}
.fig svg{width:100%;height:auto;display:block;min-width:40rem;font-family:var(--sans)}
.fig figcaption{margin-top:.75rem;font-size:.85rem;color:var(--muted)}
.fig.img{padding:0;background:transparent;border:0;box-shadow:none}
.fig.img img{width:100%;height:auto;display:block;border:2.5px solid var(--ink);border-radius:var(--r);box-shadow:5px 5px 0 var(--ink);min-width:40rem;background:#fff}
.fig .box{fill:var(--paper);stroke:var(--ink);stroke-width:2}
.fig .box.hot{fill:var(--hold);stroke:var(--ink)}
.fig .box.ev{fill:var(--mist);stroke:var(--ink)}
.fig .zone{fill:var(--paper);stroke:var(--ink);stroke-width:2;stroke-dasharray:6 5}
.fig .zone.hot{fill:var(--hold);stroke-dasharray:none}
.fig .t1{fill:var(--fg);font-weight:800;font-size:20px}
.fig .t2{fill:var(--muted);font-size:14px}
.fig .cap{fill:var(--muted);font-size:13px;font-style:italic}
.fig .lines line{stroke:var(--cobalt);stroke-width:3}
.fig .arrow{fill:var(--cobalt)}

/* AI World */
.layers{list-style:none;padding:0;margin:0;display:grid;gap:.7rem;max-width:46rem}
.layers li{display:grid;grid-template-columns:11rem 1fr;gap:1rem;align-items:center;padding:1rem 1.2rem;border-radius:var(--r);border:2.5px solid var(--ink);background:var(--surface)}
.layers li:nth-child(1){background:var(--hold);color:var(--ink)}.layers li:nth-child(2){margin-left:1rem}.layers li:nth-child(3){margin-left:2rem}.layers li:nth-child(4){margin-left:3rem;background:var(--cobalt);color:#fff}
.layers b{font:800 1.2rem var(--display)}.layers span{font-size:.95rem}
.tablewrap{overflow-x:auto;margin:0 0 1rem;border:2.5px solid var(--ink);border-radius:var(--r)}
table.map{border-collapse:collapse;width:100%;min-width:42rem;font-size:.95rem}
.map caption{text-align:left;padding:.9rem 1.1rem;font:700 .85rem var(--sans);color:var(--muted)}
.map th,.map td{text-align:left;padding:.85rem 1.1rem;border-top:2px solid var(--rule);vertical-align:top}
.map thead th{font:800 1rem var(--display);background:var(--ink);color:#fff}
.map tbody th{font-weight:700}
.map td{color:var(--muted)}
.steps{list-style:none;padding:0;margin:0 0 2rem;display:grid;grid-template-columns:repeat(auto-fit,minmax(13rem,1fr));gap:1rem;counter-reset:s}
.steps li{counter-increment:s;position:relative;padding:3.4rem 1.2rem 1.2rem;background:var(--surface);border:2.5px solid var(--ink);border-radius:var(--r);box-shadow:5px 5px 0 var(--ink)}
.steps li::before{content:counter(s);position:absolute;left:1.2rem;top:.7rem;font:800 2.4rem/1 var(--display);color:var(--cobalt)}
.steps li:nth-child(2n)::before{color:var(--slate)}
.steps p{margin:.5rem 0 0;color:var(--muted);font-size:.95rem}

footer,body>footer{max-width:var(--wrap);margin:4rem auto 3rem;padding:1.5rem 1rem 0;border-top:3px solid var(--ink);color:var(--muted);font-size:.85rem}

@media (max-width:56rem){
  .hero-wrap:not(.page) #top{grid-template-columns:1fr;min-height:auto;gap:2rem;padding-top:3rem}
  .lab{justify-self:stretch;box-shadow:6px 6px 0 var(--ink)}
  .band{padding:4rem 0 3rem}
  .timeline li,.path li,.articles li,.layers li{grid-template-columns:1fr;gap:.25rem}
  .layers li{margin-left:0!important}
  .clock{display:none}
  .bar li.sep{display:none}
}
@media (prefers-reduced-motion:reduce){/*m*/:root:not([data-motion="on"]){scroll-behavior:auto}:root:not([data-motion="on"]) *,:root:not([data-motion="on"]) *::before,:root:not([data-motion="on"]) *::after{animation:none!important;transition:none!important}:root:not([data-motion="on"]) .marquee div{width:auto;flex-wrap:wrap}}
:root[data-motion="off"]{scroll-behavior:auto}:root[data-motion="off"] *,:root[data-motion="off"] *::before,:root[data-motion="off"] *::after{animation:none!important;transition:none!important}:root[data-motion="off"] .marquee div{width:auto;flex-wrap:wrap}

.lab{position:relative}
.bot{display:block;width:5rem;height:6.2rem;--bot:var(--hold)}
.lab-bot{position:absolute;right:1rem;top:-4.6rem;transform:rotate(7deg);animation:bob 3.2s ease-in-out infinite}
@keyframes bob{50%{transform:translateY(-6px) rotate(3deg)}}
.band-bot{position:absolute;right:1rem;top:5rem;width:7.5rem;height:9.4rem;transform:rotate(-6deg);z-index:0}
.band>*:not(.band-bot){position:relative;z-index:1}
.lessons{margin:3rem 0 0;padding:1.5rem 1.5rem 1.2rem;background:var(--hold);color:var(--ink);border:3px solid var(--ink);border-radius:var(--r);box-shadow:6px 6px 0 var(--ink)}
.lessons h2{font-size:2rem!important;margin:0 0 .75rem!important}
.lessons ul{margin:0;padding-left:1.2rem}
.lessons li{font-size:1.05rem!important;line-height:1.55!important;margin:.35rem 0}
@media (max-width:56rem){.band-bot{width:4.5rem;height:5.6rem;top:2rem}}
.hero-wrap:not(.page) #top .lab p,.hero-wrap:not(.page) #top .lab .lab-title,.lab p{color:var(--ink)}
.hero-wrap:not(.page) #top .lab .lab-title small{color:#566079}
.hero-wrap:not(.page) #top .lab .lab-score,.hero-wrap:not(.page) #top .lab .lab-score span{color:#566079}
.hero-wrap:not(.page) #top .lab .lab-score b{color:var(--ink)}
.hero-wrap:not(.page) #top .lab .lab-note{color:#6b7488}
.hero-wrap:not(.page) #top h1{font-size:clamp(2.8rem,6.6vw,5.8rem)}
.hero-wrap:not(.page) #top{min-height:78vh}
.hero-wrap:not(.page) #top>*{min-width:0}
.lab-log{min-width:0}
.stop{min-width:0;overflow-wrap:anywhere}

/* life: stickers, bubble, big words, tilt */
.stickers{display:flex;flex-wrap:wrap;gap:.6rem;margin:0 0 1.25rem!important;max-width:none}
.stickers span{display:inline-block;padding:.35rem .9rem;border-radius:999px;font:800 .9rem var(--display);background:var(--hold);color:var(--ink);border:2px solid var(--ink);box-shadow:3px 3px 0 var(--ink);transform:rotate(-3deg)}
.stickers span:nth-child(2){background:#fff;transform:rotate(2deg)}
.stickers span:nth-child(3){background:var(--slate);color:#fff;transform:rotate(-1.5deg)}
.lab-bot{width:6.5rem;height:8.1rem;top:-6.2rem;right:1.2rem}
.lab-bot .eyes{transform-box:fill-box;transform-origin:center;animation:blink 5s infinite}
@keyframes blink{0%,92%,100%{transform:scaleY(1)}95%{transform:scaleY(.08)}}
.lab-bot .light{animation:ping 1.4s steps(2) infinite}
@keyframes ping{50%{fill:#6f2a33}}
.bubble{position:absolute;right:8.4rem;top:-4.6rem;margin:0;padding:.45rem .85rem;background:#fff;color:var(--ink)!important;border:3px solid var(--ink);border-radius:14px;font:700 .85rem/1.2 var(--sans);box-shadow:3px 3px 0 var(--ink);max-width:13rem;transition:transform .2s var(--ease)}
.bubble::after{content:"";position:absolute;right:-.7rem;top:1rem;width:.9rem;height:.9rem;background:#fff;border-right:3px solid var(--ink);border-top:3px solid var(--ink);transform:rotate(45deg)}
.band::after{content:attr(data-word);position:absolute;right:0;bottom:-.5rem;font:800 clamp(5rem,16vw,13rem)/.8 var(--display);color:transparent;-webkit-text-stroke:2px currentColor;opacity:.1;pointer-events:none;z-index:-1;white-space:nowrap;max-width:100%;overflow:hidden}
.card:nth-child(odd){transform:rotate(-.9deg)}
.card:nth-child(even){transform:rotate(.9deg)}
.card:hover{transform:translate(-3px,-3px) rotate(0)}
.btn.ghost:hover{background:#fff;color:var(--cobalt)}
@media (max-width:56rem){.lab-bot{width:4.6rem;height:5.8rem;top:-4.4rem}.bubble{right:6rem;top:-3.6rem}}

/* page headers (every page except the home hero) */
.hero-wrap.page>section{display:block;min-height:0;padding:4.5rem 0 3.5rem;position:relative}
.hero-wrap.page h1,.hero-wrap.page h1.name{color:#fff;font-size:clamp(2.8rem,7vw,5.8rem);line-height:.95;letter-spacing:-.02em;margin:0 0 1.25rem;max-width:18ch}
.hero-wrap.page .lede{color:#eef1f7;max-width:40rem}
.hero-wrap.page p{color:#dbe1ee}
.hero-wrap.page .eyebrow{color:var(--hold)}
.hero-wrap.page .chips li{color:#fff}
.hero-wrap.page a{text-decoration-color:var(--hold)}
.hero-wrap.page .band-bot{top:4rem}
.hero-wrap.page .chips li:hover{color:var(--ink)}
@media (max-width:56rem){.hero-wrap.page .band-bot{display:none}}
body>section,main>section{scroll-margin-top:5rem}
/* sitemap footer */
.sitemap ul{display:flex;flex-wrap:wrap;gap:.4rem 1.4rem;list-style:none;margin:0 0 1rem;padding:0}
.sitemap a{font-weight:700;text-decoration:none;color:var(--fg)}
.sitemap a:hover{text-decoration:underline;text-decoration-color:var(--accent);text-decoration-thickness:3px}
#next h2{max-width:none}
.post h1{font-size:clamp(2.2rem,5vw,3.8rem);line-height:1}

/* projects page */
.proj{padding:4.5rem 0 3rem;border-top:3px solid var(--ink)}
.proj .kind{display:inline-block;margin:0 0 1rem;padding:.3rem .8rem;border-radius:999px;background:var(--pc,var(--hold));color:#fff;font:800 .85rem var(--display);border:2px solid var(--ink)}
.proj .kind .when{opacity:.9;margin-left:.4rem}
.proj dl{display:grid;grid-template-columns:11rem 1fr;gap:1rem 1.5rem;margin:1.5rem 0 1rem;max-width:56rem}
.proj dt{font:800 1.05rem var(--display);color:var(--accent)}
.proj dd{margin:0}
.proj dd ul{margin:0;padding-left:1.1rem}
.proj dd li{margin:.3rem 0}
.proj-head{padding:4rem 0 1rem;border-top:3px solid var(--ink)}
.hero-wrap.page .chips a{color:#fff}
@media (max-width:56rem){.proj dl{grid-template-columns:1fr;gap:.2rem}.proj dd{margin-bottom:.8rem}}
.proj[style*="#e6bf6a"] .kind{color:var(--ink)}

/* principles, map, latest */
.plist{list-style:none;padding:0;margin:0 0 1.5rem;display:grid;gap:.6rem;max-width:60rem}
.plist a{display:grid;grid-template-columns:3.2rem minmax(0,18rem) 1fr;gap:1rem;align-items:baseline;padding:1rem 1.2rem;border:2.5px solid var(--ink);border-radius:var(--r);background:var(--surface);text-decoration:none;transition:transform .2s var(--ease),background .2s}
.plist a:hover{transform:translateX(8px);background:var(--hold);color:var(--ink)}
.plist .n{font:800 2rem/1 var(--display);color:var(--cobalt)}
.plist b{font:800 1.3rem/1.1 var(--display)}
.plist .s{color:var(--muted);font-size:.95rem}
.plist a:hover .s,.plist a:hover .n{color:var(--ink)}
.parts{display:grid;grid-template-columns:repeat(auto-fit,minmax(16rem,1fr));gap:1rem}
.part{padding:1.4rem;background:var(--surface);border:2.5px solid var(--ink);border-radius:var(--r);box-shadow:5px 5px 0 var(--ink)}
.part:nth-child(1){background:var(--hold);color:var(--ink)}
.part:nth-child(2){background:var(--cobalt);color:#fff}
.part:nth-child(3){background:#fff;color:var(--ink)}
.part:nth-child(4){background:var(--slate);color:#fff}
.part .pr{margin:0;font:800 .9rem var(--display);opacity:.85}
.part h3{font-size:1.9rem;margin:.2rem 0 .3rem}
.part .pl{margin:0 0 .8rem;opacity:.9;font-size:.95rem}
.part ul{list-style:none;margin:0;padding:0;display:grid;gap:.5rem}
.part a{display:block;text-decoration:none;padding:.6rem .8rem;border-radius:10px;background:rgba(255,255,255,.18);border:1.5px solid currentColor}
.part:nth-child(1) a,.part:nth-child(3) a{background:rgba(19,27,48,.08)}
.part a:hover{background:#fff;color:var(--ink)}
.part a b{display:block;font:800 1.05rem var(--display)}
.part a span{font-size:.88rem;opacity:.95}
.principle{display:grid;grid-template-columns:7rem minmax(0,1fr);gap:1.5rem;padding:4rem 0 3rem;border-top:3px solid var(--ink)}
.principle .pn{font:800 clamp(4rem,10vw,7rem)/.85 var(--display);margin:0;color:transparent;-webkit-text-stroke:3px var(--cobalt)}
.principle:nth-child(even) .pn{-webkit-text-stroke-color:var(--slate)}
.principle h2{font-size:clamp(2rem,5vw,3.4rem);max-width:20ch}
.principle .pb p{max-width:44rem}
@media (max-width:56rem){.plist a{grid-template-columns:2.4rem 1fr}.plist .s{grid-column:2}.principle{grid-template-columns:1fr;gap:.5rem}}
.proj[style*="#d9707a"] .kind{background:var(--slate)}

/* audit fixes */
html,body{overflow-x:clip}
.marquee{transform:rotate(-.8deg)}
.skip:focus{left:.4rem;top:.4rem;z-index:100;background:var(--hold);color:var(--ink);padding:.55rem 1rem;border-radius:999px;font-weight:700}
.hero-wrap:not(.page) #top p{color:#e8ecf4}
.lab-note{font-size:.82rem}
.plist{max-width:none}
.plist a{grid-template-columns:3.2rem minmax(0,24rem) 1fr}
.plist .s{font-size:1rem}
.part .pl{font-size:1rem}
.part a span{font-size:.95rem}
.lab-actions button:disabled{opacity:.75}
.sitemap a{display:inline-block;padding:.45rem 0}
.cost{margin:.2rem 0 1rem;padding:.7rem 1rem;border-left:6px solid var(--stopd);background:var(--surface);border-radius:0 var(--r) var(--r) 0;max-width:44rem}
.gloss{display:grid;grid-template-columns:10rem 1fr;gap:.6rem 1.5rem;max-width:56rem;margin:1rem 0 0}
.gloss dt{font:800 1.05rem var(--display);color:var(--accent)}
.gloss dd{margin:0}
.proj-head .ideas{margin-top:1rem}
@media (max-width:56rem){
  .hero-wrap:not(.page) #top{row-gap:5.5rem}
  .lab-log{height:auto;min-height:8.2rem}
  .lab-log li{white-space:normal;overflow:visible;text-overflow:clip}
  .bar a{display:flex;align-items:center;min-height:2.75rem;padding:.4rem .95rem}
  .bar nav{-webkit-mask-image:linear-gradient(90deg,#000 85%,transparent);mask-image:linear-gradient(90deg,#000 85%,transparent)}
  .gloss{grid-template-columns:1fr;gap:.1rem}.gloss dd{margin-bottom:.8rem}
}

.post h3{font-size:1.35rem;margin:1.8rem 0 .4rem;max-width:none}

/* figures in both colour schemes */
.fig svg text{text-anchor:middle}
.fig .box.hot~text,.fig .zone.hot~text{fill:var(--ink)}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .fig,:root:not([data-theme="light"]) .fig.img img,:root:not([data-theme="light"]) .tablewrap,:root:not([data-theme="light"]) .steps li,:root:not([data-theme="light"]) .part,:root:not([data-theme="light"]) .lessons{border-color:#3b4a73}:root:not([data-theme="light"]) .fig .box,:root:not([data-theme="light"]) .fig .zone{stroke:#8ea2d6}:root:not([data-theme="light"]) .fig .box{fill:#223055}:root:not([data-theme="light"]) .fig .zone{fill:#1c2744}:root:not([data-theme="light"]) .fig .box.ev{fill:#1c2744}:root:not([data-theme="light"]) .fig .box.hot,:root:not([data-theme="light"]) .fig .zone.hot{stroke:var(--hold)}:root:not([data-theme="light"]) .fig .lines line{stroke:#8ea2d6}:root:not([data-theme="light"]) .fig .arrow{fill:#8ea2d6}:root:not([data-theme="light"]) .fig .cap,:root:not([data-theme="light"]) .fig figcaption{fill:#a7b2cc}:root:not([data-theme="light"]) .fig.img img{background:#0f1526}}

.proof{margin:1.2rem 0 0;padding:1rem 1.2rem;border-left:4px solid var(--pc,#2c4380);background:color-mix(in srgb,var(--pc,#2c4380) 8%,transparent);border-radius:0 12px 12px 0}
.proof h3{margin:0 0 .5rem}

/* language switcher */
.lang{display:inline-flex;gap:.1rem;padding:.15rem .3rem;align-items:center}
.lang a{color:#fff;text-decoration:none;padding:.15rem .35rem;border-radius:999px;opacity:.75;font-size:.7rem;min-height:0}
.lang a:hover,.lang a:focus-visible{opacity:1;background:rgba(255,255,255,.18)}
.lang a[aria-current]{opacity:1;background:rgba(255,255,255,.28);font-weight:700}
@media (max-width:720px){.lang a{padding:.15rem .25rem;font-size:.65rem}}
.draft-banner a{color:inherit;text-decoration:underline;margin-left:.4rem}

/* eleven nav items plus the language switcher: tighten on mid-width screens so nothing is cut */
@media (min-width:721px) and (max-width:1500px){
  .bar ol{gap:0}
  .bar nav a{padding-left:.55rem;padding-right:.55rem;font-size:.86rem}
  .bar li.sep{margin:.35rem .25rem}
}

/* the gate lab is a white card in both colour schemes: pin its local palette so dark mode cannot turn buttons and stops dark-on-dark */
.lab{--paper:#f4f6fa;--mist:#e1e7f1;--muted:#4b5568}

/* dark mode: cobalt and slate on navy are unreadable; use the light accent for numbers and outlines */
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .plist .n{color:var(--accent)}:root:not([data-theme="light"]) .plist a{border-color:#3b4a73}:root:not([data-theme="light"]) .principle .pn{-webkit-text-stroke-color:var(--accent)}:root:not([data-theme="light"]) .principle:nth-child(even) .pn{-webkit-text-stroke-color:#8ea2d6}}

/* legal pages: the title sits in the hero, the text below it reads like a document */
.legal-body{max-width:46rem;margin:0 auto;padding:2.5rem 1.25rem 4rem}
.legal-body h2{font:800 1.35rem/1.2 var(--display);margin:2rem 0 .5rem}
.legal-body p,.legal-body li{font-size:1.02rem;max-width:none}
.legal-body ul{padding-left:1.2rem}
.legal-body a{text-decoration-color:var(--accent)}
.hero-wrap.page .first em{display:block;max-width:44rem;margin-top:1rem;font-style:normal;font-size:.95rem;opacity:.9}
footer .legal{margin:.4rem 0 0;font-size:.9rem}
.legal-body h2{max-width:none}

/* ---- cast: robots and people, one style. Decorative, aria-hidden, calm. ---- */
.c{display:block;width:3.4rem;height:4.25rem;flex:none;animation:hop .7s ease-in-out infinite}
.c.tall{height:4.5rem;width:3.6rem}
.c.fly{animation:float 3s ease-in-out infinite}
@keyframes hop{50%{transform:translateY(-5px)}}
@keyframes float{50%{transform:translateY(-12px) rotate(3deg)}}
.lane{position:relative;height:5.6rem;overflow:hidden;pointer-events:none;border-bottom:3px solid var(--ink);background:linear-gradient(180deg,transparent 60%,rgba(44,67,128,.10))}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .lane{border-bottom-color:#3b4a73;background:linear-gradient(180deg,transparent 60%,rgba(157,176,232,.08))}}
.walker{position:absolute;left:0;bottom:.35rem;margin-bottom:calc(var(--y,0) * 1rem);animation:patrol var(--d,50s) linear infinite;animation-delay:var(--delay,0s);will-change:transform}
.walker.rev{animation-direction:reverse}
.flip{display:flex;align-items:flex-end;gap:.15rem}
.walker.rev .flip{transform:scaleX(-1)}
.walker .c:nth-child(2){animation-delay:-.3s}
@keyframes patrol{from{transform:translateX(-12rem)}to{transform:translateX(calc(100vw + 4rem))}}
/* the waving owner above the gate lab: human in the loop */
.lab-human{position:absolute;left:1.2rem;top:-6rem;width:5rem;height:6.3rem;z-index:2}
.lab-human .c{position:absolute;inset:0;width:100%;height:100%;animation:none}
.wave .c:nth-child(1){animation:wa 1.2s steps(1,end) infinite}
.wave .c:nth-child(2){animation:wb 1.2s steps(1,end) infinite}
@keyframes wa{0%{opacity:1}50%{opacity:0}}
@keyframes wb{0%{opacity:0}50%{opacity:1}}
/* people and robots at the foot of every page */
.hitl{display:flex;justify-content:center;align-items:flex-end;gap:.3rem;margin:0 0 1.2rem;pointer-events:none}
.hitl .c{width:2.8rem;height:3.5rem}
.hitl .c:nth-child(odd){animation-delay:-.35s}
/* a scene for each principle */
.principle{position:relative}
.pscene{position:absolute;right:0;top:1.5rem;width:min(21rem,34%);height:auto;overflow:visible}
@media (max-width:56rem){.pscene{position:static;display:block;width:min(18rem,80%);margin:.5rem 0 0}}
.pscene use{overflow:visible}
.s-radius{transform-box:fill-box;transform-origin:center;animation:spin 18s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.s-wob{transform-box:fill-box;transform-origin:50% 100%;animation:wob 2.4s ease-in-out infinite}
@keyframes wob{25%{transform:rotate(-4deg)}75%{transform:rotate(4deg)}}
.s-bobs{animation:hop 1.4s ease-in-out infinite}
.s-lock{transform-box:fill-box;transform-origin:center;animation:wob 3s ease-in-out infinite}
.s-arm{transform-box:fill-box;transform-origin:0 50%;animation:arm 3.6s ease-in-out infinite}
@keyframes arm{0%,40%{transform:rotate(0)}55%,85%{transform:rotate(-58deg)}100%{transform:rotate(0)}}
.s-pop{transform-box:fill-box;transform-origin:center;animation:float 3.4s ease-in-out infinite}
.s-tk1,.s-tk2,.s-tk3{stroke-dasharray:30;stroke-dashoffset:30;animation:tick 4.5s ease-out infinite}
.s-tk2{animation-delay:.7s}.s-tk3{animation-delay:1.4s}
@keyframes tick{0%{stroke-dashoffset:30}25%,85%{stroke-dashoffset:0}100%{stroke-dashoffset:30}}
.s-net line{animation:flow 2.2s linear infinite}
@keyframes flow{to{stroke-dashoffset:-32}}
.s-redact{animation:pulse 3s ease-in-out infinite}
@media (prefers-reduced-motion:reduce){/*m*/:root:not([data-motion="on"]) .walker{animation:none!important;left:var(--x,8%)}:root:not([data-motion="on"]) .walker:nth-child(2){left:30%}:root:not([data-motion="on"]) .walker:nth-child(3){left:55%}:root:not([data-motion="on"]) .walker:nth-child(4){left:78%}:root:not([data-motion="on"]) .wave .c:nth-child(2){opacity:0}}
:root[data-motion="off"] .walker{animation:none!important;left:var(--x,8%)}:root[data-motion="off"] .walker:nth-child(2){left:30%}:root[data-motion="off"] .walker:nth-child(3){left:55%}:root[data-motion="off"] .walker:nth-child(4){left:78%}:root[data-motion="off"] .wave .c:nth-child(2){opacity:0}

/* language hint: a small card in the site's own style, bottom left, never blocking */
.lx{position:fixed;left:1rem;bottom:1rem;z-index:60;width:min(21rem,calc(100vw - 2rem));padding:1.1rem 1rem .9rem;background:#fff;color:var(--ink);border:3px solid var(--ink);border-radius:var(--r);box-shadow:6px 6px 0 var(--ink);opacity:0;transform:translateY(16px);transition:opacity .3s,transform .3s}
.lx.on{opacity:1;transform:none}
.lx-bot{position:absolute;right:1rem;top:-3.4rem;width:2.9rem;height:3.6rem;animation:hop 1.1s ease-in-out infinite}
.lx-t{margin:0 0 .7rem;font:700 1rem/1.3 var(--sans);color:var(--ink);max-width:none}
.lx-a{display:flex;flex-wrap:wrap;gap:.5rem;margin:0}
.lx-go,.lx-no{font:700 .85rem var(--sans);padding:.45rem .9rem;border-radius:999px;border:2px solid var(--ink);cursor:pointer;text-decoration:none;color:var(--ink);background:var(--hold);transition:transform .12s}
.lx-no{background:#fff}
.lx-go:hover,.lx-no:hover{transform:translateY(-2px)}
.lx-go:focus-visible,.lx-no:focus-visible{outline:3px solid var(--cobalt);outline-offset:3px}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .lx{border-color:#fff;box-shadow:6px 6px 0 #fff}}
@media (prefers-reduced-motion:reduce){/*m*/:root:not([data-motion="on"]) .lx{transition:none}}
:root[data-motion="off"] .lx{transition:none}
@media (max-width:30rem){.lx{left:.5rem;bottom:.5rem;width:calc(100vw - 1rem)}}

/* theme-switch: generated from the dark media blocks */
:root[data-theme="dark"]{--bg:#0f1526;--fg:#eef1f7;--muted:#a7b2cc;--rule:#2a3556;--surface:#18213b;--accent:#9db0e8;--on-accent:#0f1526;--paper:#18213b;--mist:#1c2744}
:root[data-theme="dark"] .card{border-color:#fff;box-shadow:5px 5px 0 #fff}
:root[data-theme="dark"] .card:hover{box-shadow:8px 8px 0 #fff}
:root[data-theme="dark"] .fig,:root[data-theme="dark"] .fig.img img,:root[data-theme="dark"] .tablewrap,:root[data-theme="dark"] .steps li,:root[data-theme="dark"] .part,:root[data-theme="dark"] .lessons{border-color:#3b4a73}
:root[data-theme="dark"] .fig .box,:root[data-theme="dark"] .fig .zone{stroke:#8ea2d6}
:root[data-theme="dark"] .fig .box{fill:#223055}
:root[data-theme="dark"] .fig .zone{fill:#1c2744}
:root[data-theme="dark"] .fig .box.ev{fill:#1c2744}
:root[data-theme="dark"] .fig .box.hot,:root[data-theme="dark"] .fig .zone.hot{stroke:var(--hold)}
:root[data-theme="dark"] .fig .lines line{stroke:#8ea2d6}
:root[data-theme="dark"] .fig .arrow{fill:#8ea2d6}
:root[data-theme="dark"] .fig .cap,:root[data-theme="dark"] .fig figcaption{fill:#a7b2cc}
:root[data-theme="dark"] .fig.img img{background:#0f1526}
:root[data-theme="dark"] .plist .n{color:var(--accent)}
:root[data-theme="dark"] .plist a{border-color:#3b4a73}
:root[data-theme="dark"] .principle .pn{-webkit-text-stroke-color:var(--accent)}
:root[data-theme="dark"] .principle:nth-child(even) .pn{-webkit-text-stroke-color:#8ea2d6}
:root[data-theme="dark"] .lane{border-bottom-color:#3b4a73;background:linear-gradient(180deg,transparent 60%,rgba(157,176,232,.08))}
:root[data-theme="dark"] .lx{border-color:#fff;box-shadow:6px 6px 0 #fff}
:root[data-theme="dark"]{color-scheme:dark}
:root[data-theme="light"]{color-scheme:light}

/* compact language dropdown (a closed <details>, works without JavaScript) */
details.lang{position:relative;display:inline-block;padding:0;border:0;font:700 .75rem var(--mono);color:#fff}
details.lang>summary{list-style:none;cursor:pointer;display:inline-flex;align-items:center;gap:.4rem;padding:.28rem .7rem;border:1px solid rgba(255,255,255,.4);border-radius:999px;color:#fff;font:700 .75rem var(--mono);user-select:none}
details.lang>summary::-webkit-details-marker{display:none}
details.lang>summary::after{content:"";width:.38rem;height:.38rem;border-right:2px solid currentColor;border-bottom:2px solid currentColor;transform:rotate(45deg) translateY(-2px);transition:transform .15s}
details.lang[open]>summary{background:rgba(255,255,255,.2)}
details.lang[open]>summary::after{transform:rotate(225deg) translateY(-1px)}
details.lang>summary:focus-visible{outline:3px solid var(--hold);outline-offset:2px}
details.lang ul{position:absolute;right:0;top:calc(100% + .55rem);margin:0;padding:.4rem;list-style:none;min-width:11.5rem;max-height:70vh;overflow:auto;background:#fff;color:var(--ink);border:3px solid var(--ink);border-radius:var(--r);box-shadow:5px 5px 0 var(--ink);z-index:90}
details.lang li{margin:0}
details.lang li a{display:flex;gap:.6rem;align-items:baseline;padding:.4rem .6rem;border-radius:8px;color:var(--ink);text-decoration:none;opacity:1;font:600 .88rem var(--sans);background:none}
details.lang li a b{font:700 .7rem var(--mono);width:1.5rem;color:var(--cobalt)}
details.lang li a:hover,details.lang li a:focus-visible{background:var(--hold);opacity:1}
details.lang li a[aria-current]{background:var(--mist);font-weight:800}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) details.lang ul{border-color:#fff;box-shadow:5px 5px 0 #fff}}
:root[data-theme="dark"] details.lang ul{border-color:#fff;box-shadow:5px 5px 0 #fff}
/* theme switch: auto, light, dark */
.theme-btn{display:inline-grid;place-items:center;width:2rem;height:2rem;margin-right:.4rem;padding:0;border:1px solid rgba(255,255,255,.4);border-radius:50%;background:transparent;color:#fff;cursor:pointer;transition:background .15s,transform .15s}
.theme-btn:hover{background:rgba(255,255,255,.2);transform:rotate(18deg)}
.theme-btn:focus-visible{outline:3px solid var(--hold);outline-offset:2px}
.theme-btn svg{width:1.05rem;height:1.05rem;display:block}
.tools{display:flex;align-items:center;gap:.25rem}
@media (prefers-reduced-motion:reduce){/*m*/:root:not([data-motion="on"]) .theme-btn,:root:not([data-motion="on"]) .theme-btn:hover{transition:none;transform:none}}
:root[data-motion="off"] .theme-btn,:root[data-motion="off"] .theme-btn:hover{transition:none;transform:none}
/* dropdown: the current language is a light chip in every theme (the page tokens turn dark in dark mode) */
details.lang li a[aria-current]{background:#e1e7f1;color:#131b30}
details.lang li a:hover,details.lang li a:focus-visible{background:#e6bf6a;color:#131b30}
details.lang li a b{color:#2c4380}
h1,.name{overflow-wrap:break-word;hyphens:auto}
@media (max-width:30rem){.hero-wrap h1,.name{font-size:clamp(2rem,11vw,3.2rem)}}

/* flags: small drawn flags (not emoji, which Windows does not show) */
.flag{display:inline-block;width:1.15rem;height:.77rem;flex:none;border-radius:2px;box-shadow:0 0 0 1px rgba(19,27,48,.4);vertical-align:middle}
.xl{display:inline-flex;align-items:center;gap:.25rem;margin-left:.45rem;font:700 .8rem/1 var(--sans);opacity:.9;vertical-align:middle;white-space:nowrap}
.xl .flag{width:1.05rem;height:.7rem}
details.lang>summary .flag{width:1.15rem;height:.77rem;box-shadow:0 0 0 1px rgba(255,255,255,.55)}
details.lang li a .flag{width:1.3rem;height:.87rem}
details.lang li a span{font:600 .9rem var(--sans)}
details.lang li a{align-items:center}
@media (min-width:56.01rem){.principle .pb{padding-right:min(20rem,32%)}}

/* ---- audit run: an animated quiz. Pinned light palette so it reads in every theme. ---- */
.quizsec{max-width:62rem}
.qhead{display:flex;align-items:baseline;gap:.8rem;flex-wrap:wrap}
.qsub{margin:0;color:var(--muted);font-weight:600}
.quiz{--paper:#f4f6fa;--mist:#e1e7f1;--muted:#4b5568;position:relative;background:#fff;color:#131b30;border:3px solid #131b30;border-radius:20px;box-shadow:10px 10px 0 #131b30;padding:1.1rem 1.25rem 1rem;margin-top:1rem;overflow:hidden}
.qlane{position:relative;display:grid;grid-template-columns:repeat(6,1fr);list-style:none;margin:0;padding:5rem 0 .2rem;border-bottom:3px dashed #9aa7c7}
.qstop{display:flex;flex-direction:column;align-items:center;gap:.3rem;text-align:center;font-size:.78rem;font-weight:700;padding:.5rem .1rem .6rem;color:#4b5568;transition:color .3s,transform .3s}
.qstop i{font-style:normal;display:grid;place-items:center;width:1.9rem;height:1.9rem;border-radius:50%;border:3px solid #131b30;background:#fff;color:#131b30;font-size:.85rem;transition:background .3s,transform .3s}
.qstop.on{color:#131b30}.qstop.on i{background:#e6bf6a;transform:scale(1.18);animation:pulse 1.4s ease-in-out infinite}
.qstop.ok i{background:#4aa380;color:#fff}.qstop.ok i::before{content:"\2713"}.qstop.ok i{font-size:0}.qstop.ok i::before{font-size:.9rem}
.qstop.no i{background:#d9707a;color:#fff;font-size:0}.qstop.no i::before{content:"!";font-size:.95rem}
.qactor{position:absolute;top:.2rem;display:flex;align-items:flex-end;transition:left .8s cubic-bezier(.5,0,.2,1);will-change:left}
.qactor .c{width:2.9rem;height:3.6rem;animation:none}
.qactor .c+.c{margin-left:-.4rem;animation:hop .9s ease-in-out infinite}
.qactor.hop .c:first-of-type{animation:qjump .6s ease-out}
.qactor.oops{animation:shake .5s}
.qbubble{position:absolute;left:50%;bottom:100%;transform:translate(-30%,6px) scale(.8);transform-origin:20% 100%;white-space:nowrap;background:#fff;border:2.5px solid #131b30;border-radius:12px;padding:.15rem .6rem;font-size:.8rem;font-weight:700;opacity:0;pointer-events:none}
.qbubble.on{animation:qpop 2.2s ease-out forwards}
@keyframes qpop{0%{opacity:0;transform:translate(-30%,8px) scale(.7)}12%,75%{opacity:1;transform:translate(-30%,0) scale(1)}100%{opacity:0;transform:translate(-30%,-4px) scale(1)}}
@keyframes qjump{0%{transform:translateY(0)}35%{transform:translateY(-1.1rem) rotate(-6deg)}70%{transform:translateY(0) rotate(3deg)}100%{transform:none}}
.spark{position:absolute;top:2.4rem;width:.6rem;height:.6rem;margin-left:1.4rem;border-radius:50%;background:#e6bf6a;border:2px solid #131b30;pointer-events:none;animation:qspark .85s ease-out forwards}
.spark.bad{background:#d9707a}
@keyframes qspark{from{opacity:1;transform:rotate(var(--a)) translateX(0)}to{opacity:0;transform:rotate(var(--a)) translateX(2.6rem)}}
.qstamp{position:absolute;right:1rem;top:.7rem;padding:.1rem .7rem;font-weight:800;letter-spacing:.12em;font-size:1.05rem;border:4px solid;border-radius:8px;transform:rotate(-12deg) scale(1.6);opacity:0;pointer-events:none}
.qstamp.ok{color:#2a7a5c;border-color:#2a7a5c}.qstamp.no{color:#a1323e;border-color:#a1323e}
.qstamp.hit{animation:qstamp 1.5s ease-out forwards}
@keyframes qstamp{0%{opacity:0;transform:rotate(-12deg) scale(1.9)}14%{opacity:.95;transform:rotate(-12deg) scale(1)}80%{opacity:.95}100%{opacity:0;transform:rotate(-12deg) scale(1)}}
.qbody{padding-top:.9rem;min-height:15rem}
.qround{margin:0;font-size:.8rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:#4b5568}
.qq{margin:.3rem 0 .8rem;font-size:1.2rem;font-weight:700;line-height:1.3;max-width:none}
.qintro{max-width:42rem}
.qopts{list-style:none;margin:0;padding:0;display:grid;gap:.6rem}
.qopt{width:100%;text-align:left;font:inherit;color:#131b30;background:#f4f6fa;border:3px solid #131b30;border-radius:14px;padding:.65rem .9rem;cursor:pointer;transition:transform .15s,background .2s,box-shadow .15s}
.qopt:hover:not(:disabled){transform:translate(-2px,-2px);box-shadow:4px 4px 0 #131b30;background:#fff}
.qopt:focus-visible,.qbtn:focus-visible{outline:3px solid #2c4380;outline-offset:3px}
.qopt:disabled{cursor:default;color:#131b30;opacity:.9}
.qopt.right{background:#cfeadf;opacity:1;animation:qpulse .5s}
.qopt.wrong{background:#f6d2d6;opacity:1;animation:shake .45s}
.qopt.right-hint{background:#e3f3ec;border-style:dashed;opacity:1}
@keyframes qpulse{50%{transform:scale(1.02)}}
.qfb{margin:.8rem 0 .2rem;font-size:.98rem;max-width:44rem;animation:rise .4s ease-out both}
.qfb b.g{color:#2a7a5c}.qfb b.n{color:#a1323e}
.qhint{display:block;margin-top:.3rem;color:#4b5568}
.qbtn{font:inherit;font-weight:700;cursor:pointer;color:#131b30;background:#e6bf6a;border:3px solid #131b30;border-radius:999px;padding:.55rem 1.3rem;margin-top:.8rem;box-shadow:4px 4px 0 #131b30;transition:transform .15s,box-shadow .15s}
.qbtn:hover{transform:translate(-2px,-2px);box-shadow:6px 6px 0 #131b30}
.qbtn:active{transform:translate(2px,2px);box-shadow:1px 1px 0 #131b30}
.qscore{margin:0;font-size:2rem;font-weight:800}
.qrank{margin:0 0 .4rem;font-size:1.25rem;font-weight:700;color:#2c4380}
.qmeter{display:flex;gap:.4rem;margin-top:.5rem}
.qmeter i{width:1.6rem;height:.7rem;border-radius:4px;border:2px solid #131b30;transform-origin:bottom;animation:qgrow .5s ease-out both}
.qmeter i:nth-child(2){animation-delay:.08s}.qmeter i:nth-child(3){animation-delay:.16s}.qmeter i:nth-child(4){animation-delay:.24s}.qmeter i:nth-child(5){animation-delay:.32s}.qmeter i:nth-child(6){animation-delay:.4s}
.qmeter i.ok{background:#4aa380}.qmeter i.no{background:#d9707a}
@keyframes qgrow{from{transform:scaleY(0)}to{transform:none}}
.qnote{margin:.9rem 0 0;font-size:.8rem;color:#4b5568;max-width:none}
.quiz.done{animation:qpulse .6s}
@media (max-width:40rem){.qstop{font-size:.66rem}.qstop i{width:1.6rem;height:1.6rem}.qq{font-size:1.05rem}.quiz{box-shadow:6px 6px 0 #131b30;padding:1rem .9rem .9rem}.qactor .c{width:2.3rem;height:2.9rem}.qlane{padding-top:4.2rem}}

/* ---- more life: scroll reveal, hover play, the page-progress rider, sticker wiggle ---- */
.js .reveal{opacity:0;transform:translateY(28px);transition:opacity .7s ease-out,transform .7s cubic-bezier(.2,.7,.2,1)}
.js .reveal.in{opacity:1;transform:none}
.plist li{transition:transform .2s}
.plist li:hover{transform:translateX(6px)}
.plist li .n{display:inline-block;transition:transform .3s cubic-bezier(.3,1.6,.5,1)}
.plist li:hover .n{transform:rotate(-12deg) scale(1.25)}
main li[data-tag]{transition:transform .2s}
main li[data-tag]:hover{transform:translateY(-3px)}
.stickers span{display:inline-block;animation:sway 5s ease-in-out infinite}
.stickers span:nth-child(2){animation-delay:-1.6s}.stickers span:nth-child(3){animation-delay:-3.2s}
@keyframes sway{0%,100%{transform:rotate(-2deg)}50%{transform:rotate(2.5deg) translateY(-2px)}}
.rider{position:fixed;bottom:0;left:0;z-index:35;width:1.7rem;height:2.1rem;margin:0 0 0 -.85rem;pointer-events:none;transition:left .15s linear;filter:drop-shadow(0 2px 0 rgba(19,27,48,.35))}
.rider svg{width:100%;height:100%;display:block;animation:hop .6s ease-in-out infinite;--bot:#e6bf6a}
.rider.still svg{animation:none}
.btn{transition:transform .15s,box-shadow .15s}
.btn:hover{transform:translateY(-2px) rotate(-1deg)}
@media (prefers-reduced-motion:reduce){/*m*/:root:not([data-motion="on"]) .js .reveal{opacity:1;transform:none}:root:not([data-motion="on"]) .stickers span{animation:none}:root:not([data-motion="on"]) .rider{display:none}}
:root[data-motion="off"] .js .reveal{opacity:1;transform:none}:root[data-motion="off"] .stickers span{animation:none}:root[data-motion="off"] .rider{display:none}

/* ---- chapters: long pages one section at a time ---- */
.chapbar{position:sticky;top:4.4rem;z-index:40;width:min(100% - 2rem,72rem);margin:1.2rem auto}
.chapbar ol{display:flex;gap:.3rem;list-style:none;margin:0;padding:.35rem;overflow-x:auto;scrollbar-width:none;background:var(--surface);border:2px solid var(--fg);border-radius:999px;box-shadow:0 10px 24px -14px rgba(0,0,0,.55)}
.chapbar ol::-webkit-scrollbar{display:none}
.chapbar li{flex:none}
.chapbar button{display:flex;align-items:center;gap:.45rem;font:600 .88rem var(--sans,inherit);color:var(--fg);background:transparent;border:0;border-radius:999px;padding:.4rem .85rem .4rem .5rem;cursor:pointer;white-space:nowrap;transition:background .2s,color .2s,transform .2s}
.chapbar button span{max-width:14rem;overflow:hidden;text-overflow:ellipsis}
.chapbar button i{font-style:normal;display:grid;place-items:center;width:1.5rem;height:1.5rem;border-radius:50%;border:2px solid currentColor;font-size:.75rem;flex:none;transition:transform .25s}
.chapbar button:hover{background:var(--mist);transform:translateY(-1px)}
.chapbar button.on{background:var(--hold);color:var(--ink)}
.chapbar button.on i{transform:rotate(360deg) scale(1.1);background:var(--ink);color:var(--hold);border-color:var(--ink);transition:transform .5s}
.chapbar button:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
.chapnav{grid-column:1/-1;width:100%;box-sizing:border-box;display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;margin:2.2rem 0 0;padding-top:1.1rem;border-top:2px dashed var(--rule)}
.chapnav button{font:700 .95rem var(--sans,inherit);color:var(--fg);background:var(--surface);border:2px solid var(--fg);border-radius:999px;padding:.55rem 1.2rem;width:auto;min-width:0;text-align:center;cursor:pointer;max-width:100%;box-shadow:3px 3px 0 var(--fg);transition:transform .15s,box-shadow .15s,background .2s}
.chapnav button:hover{transform:translate(-2px,-2px);box-shadow:5px 5px 0 var(--fg);background:var(--hold);color:var(--ink)}
.chapnav .next{margin-left:auto}
.chapnav button:focus-visible{outline:3px solid var(--accent);outline-offset:3px}
.chap-in>*{animation:chapIn .65s cubic-bezier(.2,.7,.2,1) both;animation-delay:calc(var(--i,0) * 70ms)}
@keyframes chapIn{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:none}}
.chap-in h2,.reveal.in h2{background:linear-gradient(var(--hold),var(--hold)) 0 100%/0 .28rem no-repeat;padding-bottom:.25rem;animation:uline .9s .4s ease-out forwards}
.chap-in>h2{animation:chapIn .65s cubic-bezier(.2,.7,.2,1) both,uline .9s .5s ease-out forwards}
@keyframes uline{to{background-size:5.5rem .28rem}}
@media print{[data-chap][hidden]{content-visibility:visible!important;display:block!important}.chapbar,.chapnav,.peeker,.rider{display:none!important}}

/* ---- peeking robot, page fade between pages, small hover plays ---- */
.peeker{position:fixed;right:-3.6rem;bottom:1.1rem;z-index:30;width:4.2rem;height:5.2rem;pointer-events:none;transition:right .7s cubic-bezier(.3,1.4,.5,1)}
.peeker.in{right:.2rem}
.peeker svg{width:100%;height:100%;display:block;transform:rotate(-8deg);animation:hop 1.3s ease-in-out infinite}
@view-transition{navigation:auto}
::view-transition-old(root),::view-transition-new(root){animation-duration:.28s}
table tbody tr{transition:background .2s}
table tbody tr:hover{background:var(--mist)}
figure img,figure svg{transition:transform .5s cubic-bezier(.2,.7,.2,1)}
figure:hover img,figure:hover svg{transform:scale(1.025)}
#list .articles{display:grid;grid-template-columns:repeat(auto-fill,minmax(25rem,1fr));gap:0 2.5rem}
#list .articles li{grid-template-columns:1fr auto;padding:1rem 0}
#list .articles li .kind{grid-column:1/-1}
#list .articles h3{font-size:1.2rem}
@media (max-width:40rem){.chapbar{top:4rem;width:calc(100% - 1.2rem)}.chapbar button span{max-width:9rem}#list .articles{grid-template-columns:1fr}}
@media (prefers-reduced-motion:reduce){/*m*/:root:not([data-motion="on"]) .peeker{display:none}:root:not([data-motion="on"]) .chap-in>*{animation:none}:root:not([data-motion="on"]) .chap-in h2,:root:not([data-motion="on"]) .reveal.in h2{animation:none;background-size:5.5rem .28rem}}
:root[data-motion="off"] .peeker{display:none}:root[data-motion="off"] .chap-in>*{animation:none}:root[data-motion="off"] .chap-in h2,:root[data-motion="off"] .reveal.in h2{animation:none;background-size:5.5rem .28rem}

/* ---- full copies of published Medium stories ---- */
.post .deck{font-size:1.3rem;line-height:1.5;color:var(--muted);margin:-.4rem 0 1.2rem}
.post .medium-note{border-left:5px solid var(--hold);background:var(--surface);padding:.7rem 1rem;border-radius:10px;font-size:1rem;margin:1.2rem 0}
.post blockquote{margin:1.4rem 0;padding:.2rem 1.2rem;border-left:5px solid var(--accent);background:var(--surface);border-radius:0 12px 12px 0}
.post blockquote p{font-size:1.2rem;margin:.6rem 0}
.post figure.img img{display:block;width:100%;height:auto;border-radius:12px;border:2px solid var(--rule);background:#fff}
.post code{font-family:ui-monospace,Consolas,monospace;font-size:.92em;background:var(--mist);padding:.1em .35em;border-radius:5px}

/* ---- safe motion tier ----
   When the system asks for reduced motion (and the visitor has not chosen on or off), nothing travels, but small changes of opacity and colour keep the page alive:
   blinking and glowing robots, a waving person, a pulsing clock dot, a soft fade when a section opens. */
@keyframes chapFade{from{opacity:0}to{opacity:1}}
@keyframes qfade{0%{opacity:0}12%,75%{opacity:1}100%{opacity:0}}
@media (prefers-reduced-motion:reduce){
:root:not([data-motion]) .lab-bot .eyes{animation:blink 5s infinite!important}
:root:not([data-motion]) .lab-bot .light{animation:ping 1.4s steps(2) infinite!important}
:root:not([data-motion]) .wave .c:nth-child(1){animation:wa 1.2s steps(1,end) infinite!important}
:root:not([data-motion]) .wave .c:nth-child(2){animation:wb 1.2s steps(1,end) infinite!important}
:root:not([data-motion]) .clock::before{animation:pulse 2s infinite!important}
:root:not([data-motion]) .qstop.on i{animation:pulse 1.4s ease-in-out infinite!important}
:root:not([data-motion]) .s-redact{animation:pulse 3s ease-in-out infinite!important}
:root:not([data-motion]) .s-tk1,:root:not([data-motion]) .s-tk2,:root:not([data-motion]) .s-tk3{animation:tick 4.5s ease-out infinite!important}
:root:not([data-motion]) .chap-in>*{animation:chapFade .5s both!important}
:root:not([data-motion]) .qbubble.on{animation:qfade 2.2s ease-out forwards!important}
}

/* the motion switch says what it does while the system's reduced-motion setting hides the animation */
.motion-btn.hint{width:auto;gap:.4rem;padding:0 .75rem;border-radius:999px;background:var(--hold);color:var(--ink);font:700 .8rem var(--sans,inherit)}
.motion-btn.hint .mt{white-space:nowrap}
.motion-btn.hint svg{width:1rem;height:1rem;flex:none}
@media (max-width:48rem){.motion-btn.hint .mt{display:none}.motion-btn.hint{padding:0}}
.bar a.brand{display:flex;align-items:center;gap:.55rem;padding:.2rem .8rem .2rem .2rem;color:#fff;font-weight:800;letter-spacing:.01em;flex:none}
.bar a.brand img{display:block;width:2.25rem;height:2.25rem;border-radius:11px;box-shadow:0 0 0 2px #e6bf6a;transition:transform .35s cubic-bezier(.3,1.6,.5,1)}
.bar a.brand:hover img{transform:rotate(-8deg) scale(1.08)}
@media (max-width:90rem){.bar a.brand span{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}.bar a.brand{padding-right:.3rem}}
@media (prefers-reduced-motion:reduce){:root:not([data-motion="on"]) .bar a.brand img{transition:none}}