/* Taj Nicholas portfolio. Concept: an engineering drawing meets a 3D print: cobalt blue and safety orange, hairline dimension lines, crop marks round pictures,
   things that appear one layer at a time. Light by default, dark when the device is dark (or when chosen with the button). */

@font-face{font-family:Archivo;src:url(/fonts/archivo.woff2) format("woff2");font-weight:100 900;font-stretch:62% 125%;font-display:swap}
@font-face{font-family:"JetBrains Mono";src:url(/fonts/jetbrains-mono.woff2) format("woff2");font-weight:400;font-display:swap}

:root{
  --bg:#f4f5f9;--surface:#fff;--panel:#e9ecf6;--ink:#0b1022;--muted:#505a75;--line:rgba(11,16,34,.13);--line-strong:rgba(11,16,34,.32);
  --link:#2340e6;--btn:#2340e6;--btn-ink:#fff;--orange:#ff5a1f;--orange-ink:#b83a05;--band:#0b1022;--band-ink:#edf0fa;
  --grid-line:rgba(35,64,230,.1);--floor:#e3e7f5;--tray:#cdd3ec;--bin-in:rgba(255,90,31,.1);--ped:#c4cbe8;
  --arm:#2340e6;--arm-dark:#14258f;--arm-light:#dfe5ff;--layer:rgba(255,255,255,.2);
  --sans:Archivo,"Helvetica Neue",Arial,system-ui,sans-serif;--mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --ease:cubic-bezier(.2,.7,.1,1);--gut:clamp(1rem,4vw,2rem);--head:4rem;color-scheme:light;
}
@media (prefers-color-scheme:dark){:root:not([data-theme=light]){
  --bg:#080b17;--surface:#10162a;--panel:#141b33;--ink:#edf0fa;--muted:#a2acc6;--line:rgba(237,240,250,.14);--line-strong:rgba(237,240,250,.34);
  --link:#8397ff;--btn:#3a54f2;--orange:#ff7a45;--orange-ink:#ff9a70;--band:#10162a;
  --grid-line:rgba(131,151,255,.11);--floor:#10162a;--tray:#1f2848;--bin-in:rgba(255,122,69,.14);--ped:#1c2547;
  --arm:#4a63f5;--arm-dark:#1d2da6;--arm-light:#c8d2ff;color-scheme:dark}}
:root[data-theme=dark]{
  --bg:#080b17;--surface:#10162a;--panel:#141b33;--ink:#edf0fa;--muted:#a2acc6;--line:rgba(237,240,250,.14);--line-strong:rgba(237,240,250,.34);
  --link:#8397ff;--btn:#3a54f2;--orange:#ff7a45;--orange-ink:#ff9a70;--band:#10162a;
  --grid-line:rgba(131,151,255,.11);--floor:#10162a;--tray:#1f2848;--bin-in:rgba(255,122,69,.14);--ped:#1c2547;
  --arm:#4a63f5;--arm-dark:#1d2da6;--arm-light:#c8d2ff;color-scheme:dark}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-padding-top:calc(var(--head) + 1.2rem);scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font:400 1.0625rem/1.62 var(--sans);font-stretch:100%;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-wrap:break-word}
img,svg{display:block;max-width:100%}
img{height:auto}
a{color:var(--link);text-underline-offset:.2em;text-decoration-thickness:1px}
a:hover{text-decoration-thickness:2px}
:focus-visible{outline:2px solid var(--link);outline-offset:3px;border-radius:2px}
button{font:inherit;color:inherit}
h1,h2,h3{margin:0;font-weight:800;line-height:1.04;letter-spacing:-.02em;text-wrap:balance}
p{margin:0 0 1em;text-wrap:pretty}
ul,ol,dl{margin:0;padding:0}
li{list-style:none}
dd{margin:0}
.wrap{width:100%;max-width:calc(1200px + 2 * var(--gut));margin-inline:auto;padding-inline:var(--gut)}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}
.skip{position:absolute;left:-999px;top:0;z-index:100;background:var(--ink);color:var(--bg);padding:.6rem 1rem}
.skip:focus{left:8px;top:8px}
::selection{background:var(--orange);color:#0b1022}

/* ---------- header */
.site-header{position:sticky;top:0;z-index:50;height:var(--head);background:color-mix(in srgb,var(--bg) 84%,transparent);-webkit-backdrop-filter:blur(14px) saturate(1.4);backdrop-filter:blur(14px) saturate(1.4);border-bottom:1px solid var(--line);view-transition-name:site-header}
.bar{display:flex;align-items:center;gap:1rem;height:100%}
.brand{display:flex;align-items:center;gap:.7rem;color:var(--ink);text-decoration:none;font-stretch:125%;font-weight:800;letter-spacing:-.02em;font-size:1.05rem}
.mark{flex:none;width:2rem;height:2rem;border-radius:.5rem;transition:rotate .6s var(--ease)}
.brand:hover .mark{rotate:-8deg}
.mainnav{margin-left:auto}
.nav{display:flex;gap:.35rem}
.nav a{position:relative;display:block;padding:.5rem .8rem;color:var(--ink);text-decoration:none;font-weight:600;font-size:.97rem}
.nav a::after{content:"";position:absolute;left:.8rem;right:.8rem;bottom:.25rem;height:2px;background:var(--orange);transform:scaleX(0);transform-origin:100% 50%;transition:transform .35s var(--ease)}
.nav a:hover::after,.nav a:focus-visible::after,.nav a[aria-current]::after{transform:scaleX(1);transform-origin:0 50%}
.tools{display:flex;gap:.2rem}
.theme,.menu{display:none;place-items:center;width:2.6rem;height:2.6rem;padding:0;border:0;border-radius:50%;background:transparent;cursor:pointer;transition:background-color .3s}
.theme:hover,.menu:hover{background:color-mix(in srgb,var(--ink) 10%,transparent)}
html.js .theme{display:grid}
.theme .i-sun{display:none}
@media (prefers-color-scheme:dark){:root:not([data-theme=light]) .theme .i-moon{display:none}:root:not([data-theme=light]) .theme .i-sun{display:block}}
:root[data-theme=dark] .theme .i-moon{display:none}:root[data-theme=dark] .theme .i-sun{display:block}
.progress{position:absolute;left:0;right:0;bottom:-1px;height:2px;background:var(--orange);transform:scaleX(0);transform-origin:0 50%;pointer-events:none}
@supports (animation-timeline:scroll()){.progress{animation:progress linear both;animation-timeline:scroll(root)}}
@keyframes progress{to{transform:scaleX(1)}}
.bars{position:relative;display:block;width:1.3rem;height:1.3rem}
.bars::before,.bars::after{content:"";position:absolute;left:0;right:0;height:2px;border-radius:2px;background:currentColor;transition:transform .45s var(--ease),top .45s var(--ease)}
.bars::before{top:calc(50% - 4px)}.bars::after{top:calc(50% + 2px)}
[data-open] .bars::before{top:calc(50% - 1px);transform:rotate(45deg)}
[data-open] .bars::after{top:calc(50% - 1px);transform:rotate(-45deg)}
@media (max-width:760px){
  .bar{flex-wrap:wrap;gap:0 .5rem}
  .site-header{height:auto;min-height:var(--head)}
  .bar{min-height:var(--head)}
  .tools{margin-left:auto}
  .mainnav{order:3;width:100%;margin:0 0 .4rem}
  .nav{flex-wrap:wrap}
  html.js .menu{display:grid}
  html.js .mainnav{display:none;position:absolute;top:100%;left:0;right:0;margin:0;padding:.4rem var(--gut) 1rem;background:var(--bg);border-bottom:1px solid var(--line)}
  html.js [data-open] .mainnav{display:block;animation:drop .35s var(--ease)}
  html.js .nav{flex-direction:column;gap:0}
  html.js .nav a{padding:.8rem 0;font-size:1.1rem;border-bottom:1px solid var(--line)}
  html.js .nav a::after{display:none}
  html.js .nav a[aria-current]{color:var(--link)}
}
@keyframes drop{from{opacity:0;transform:translateY(-8px)}}

/* ---------- buttons, small parts */
.btnrow{display:flex;flex-wrap:wrap;gap:.8rem;margin:1.6rem 0 0}
.btn{display:inline-flex;align-items:center;gap:.55rem;padding:.8rem 1.25rem;border:1.5px solid var(--btn);border-radius:.5rem;background:var(--btn);color:var(--btn-ink);font:700 .98rem/1.2 var(--sans);text-decoration:none;cursor:pointer;
  box-shadow:0 0 0 var(--orange);transition:transform .25s var(--ease),box-shadow .25s var(--ease)}
.btn:hover,.btn:focus-visible{transform:translate(-3px,-3px);box-shadow:3px 3px 0 var(--orange);text-decoration:none}
.btn:active{transform:none;box-shadow:0 0 0 var(--orange)}
.btn.ghost{background:transparent;border-color:var(--ink);color:var(--ink)}
.btn .ico{flex:none}
.more{display:inline-flex;align-items:center;gap:.5rem;font-weight:700;text-decoration:none}
.more .ico{transition:transform .3s var(--ease)}
.more:hover .ico,.more:focus-visible .ico{transform:translateX(4px)}
.tags{display:flex;flex-wrap:wrap;gap:.45rem;margin:1rem 0}
.tags li{padding:.18rem .65rem;border:1px solid var(--line-strong);border-radius:999px;font-size:.84rem;color:var(--muted)}
.meta{margin:0 0 .5rem;color:var(--muted);font-size:.92rem}
.lead{font-size:clamp(1.15rem,2.2vw,1.45rem);line-height:1.45;max-width:36ch;color:var(--ink)}
.sub{font-size:1.1rem;margin-bottom:.6rem;font-stretch:112%}
.all{margin-top:2.5rem}

/* dimension-line headings: the text, then a measured line with arrow ends */
.dim{display:flex;align-items:center;gap:1.2rem;margin-bottom:1.6rem}
.dim>:is(h2,h3){flex:0 1 auto;min-width:0;font-size:clamp(1.55rem,3.2vw,2.3rem);font-stretch:118%}
.dim-line{position:relative;flex:1 0 2rem;min-width:2rem;height:1px;background:var(--line-strong);color:var(--muted);font:400 .78rem/1 var(--mono);font-style:normal}
.dim-line::before,.dim-line::after{content:"";position:absolute;top:-4px;width:9px;height:9px;background:var(--line-strong)}
.dim-line::before{left:0;clip-path:polygon(100% 0,0 50%,100% 100%)}
.dim-line::after{right:0;clip-path:polygon(0 0,100% 50%,0 100%)}
.dim-line span{position:absolute;left:50%;top:50%;translate:-50% -50%;padding:0 .8rem;background:var(--bg);white-space:nowrap}
@media (max-width:520px){.dim-line span{display:none}}

/* pictures sit on a "plate" with crop marks just outside its corners */
.plate{position:relative;display:block;background:var(--c,var(--panel))}
.plate::after{content:"";position:absolute;inset:-9px;pointer-events:none;--m:color-mix(in srgb,var(--ink) 55%,transparent);
  background:linear-gradient(var(--m),var(--m)) 0 0/14px 1.5px no-repeat,linear-gradient(var(--m),var(--m)) 0 0/1.5px 14px no-repeat,
    linear-gradient(var(--m),var(--m)) 100% 0/14px 1.5px no-repeat,linear-gradient(var(--m),var(--m)) 100% 0/1.5px 14px no-repeat,
    linear-gradient(var(--m),var(--m)) 0 100%/14px 1.5px no-repeat,linear-gradient(var(--m),var(--m)) 0 100%/1.5px 14px no-repeat,
    linear-gradient(var(--m),var(--m)) 100% 100%/14px 1.5px no-repeat,linear-gradient(var(--m),var(--m)) 100% 100%/1.5px 14px no-repeat}
.plate img{width:100%}
.f-img,.p-img,.b-img,.adj-img{aspect-ratio:4/3}
.f-img img,.p-img img,.b-img img,.adj-img img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:var(--fp,50% 50%)}

/* ---------- hero */
.hero{padding-block:clamp(2rem,5vw,4rem) clamp(2.5rem,6vw,5rem)}
.hero-in{display:grid;gap:clamp(2rem,5vw,4rem);align-items:center}
@media (min-width:960px){.hero-in{grid-template-columns:minmax(0,1fr) minmax(0,1.04fr);min-height:min(40rem,calc(100svh - var(--head) - 4rem))}}
.hero h1{font-size:clamp(3.5rem,11.5vw,8.4rem);line-height:.86;letter-spacing:-.04em;font-stretch:125%;font-weight:850}
@media (min-width:960px){.hero h1{font-size:clamp(3.8rem,7.6vw,7rem)}}
.hero h1 span{display:block;width:fit-content;
  background:repeating-linear-gradient(180deg,var(--ink) 0 7px,color-mix(in srgb,var(--ink) 52%,var(--bg)) 7px 8px);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:transparent}
.hero h1 .w2{margin-top:.04em}
@media (forced-colors:active){.hero h1 span{background:none;-webkit-text-fill-color:currentColor;color:CanvasText}}
.hero .lead{margin:1.8rem 0 .5rem}
.role{margin:0;color:var(--muted)}
@media (prefers-reduced-motion:no-preference){
  .hero h1 span{animation:print 1s steps(18,jump-end) both}
  .hero h1 .w2{animation-delay:.22s}
  .hero .lead,.hero .role,.hero .btnrow{animation:rise .8s var(--ease) .75s both}
}
@keyframes print{from{clip-path:inset(100% 0 0 0)}to{clip-path:inset(0)}}
@keyframes rise{from{opacity:0;transform:translateY(10px)}}

/* the arm: a drawing that responds */
.stage{position:relative;min-width:0}
.stage-art{position:relative;touch-action:pan-y;user-select:none;-webkit-user-select:none;background:var(--surface);border:1.5px solid var(--ink);cursor:crosshair}
.stage-svg{width:100%;height:auto;aspect-ratio:640/470}
.bp-line{fill:none;stroke:var(--grid-line);stroke-width:1}
.floor{fill:var(--floor)}
.floor-line{fill:none;stroke:var(--ink);stroke-width:2}
.tray{fill:var(--tray)}
.bin-in{fill:var(--bin-in)}
.bin-out{fill:none;stroke:var(--orange);stroke-width:4;stroke-linejoin:round}
.bin-rim{fill:none;stroke:var(--orange);stroke-width:5;stroke-linecap:round}
.ped,.ped2{fill:var(--ped);stroke:var(--ink);stroke-width:1.5}
.servo{fill:var(--arm-dark);stroke:var(--ink);stroke-width:1.5}
.horn{fill:var(--arm-light);stroke:var(--arm-dark);stroke-width:3}
.link{fill:none;stroke:var(--arm);stroke-linecap:round}
.link-l{fill:none;stroke:url(#layers);stroke-linecap:round}
.layer-line{fill:var(--layer)}
.link-hi{fill:none;stroke:#fff;stroke-opacity:.35;stroke-width:3;stroke-linecap:round}
.elbow{fill:var(--arm-dark)}
.screw-b{fill:var(--arm-light)}
.screw{fill:var(--arm-dark)}
.jawc{fill:var(--orange);stroke:#0b1022;stroke-width:1;stroke-opacity:.45}
.mb{stroke:#0b1022;stroke-opacity:.55;stroke-width:1.2}
.mb-white{fill:#f4f6ff}.mb-yellow{fill:#ffd23a}.mb-blue{fill:#2f64ff}.mb-green{fill:#2dbd6e}.mb-black{fill:#1a1d2b}
.hl{fill:#fff;opacity:.55}
.mi{transform-box:fill-box;transform-origin:center}
.marble.pop .mi{animation:pop .5s var(--ease) both}
@keyframes pop{from{scale:.2;opacity:0}}
.lcd{position:absolute;left:.75rem;top:.75rem;z-index:2;padding:.4rem .6rem;background:#2a3fd9;color:#e8edff;border:3px solid #0b1022;border-radius:.3rem;font:400 clamp(.6rem,1.7vw,.82rem)/1.35 var(--mono);white-space:pre;box-shadow:inset 0 0 0 2px rgba(255,255,255,.14),0 2px 0 rgba(11,16,34,.25);pointer-events:none}
.lcd-r{display:block}
.stage-bar{display:flex;flex-wrap:wrap;align-items:center;gap:.4rem 1.2rem;margin-top:.9rem;color:var(--muted);font-size:.9rem}
.hint{margin:0;flex:1 1 12rem}
.h-touch{display:none}
@media (pointer:coarse){.h-mouse{display:none}.h-touch{display:inline}}
.readout{position:absolute;left:.8rem;bottom:.45rem;margin:0;color:var(--muted);font:400 clamp(.58rem,1.5vw,.76rem)/1.4 var(--mono);pointer-events:none}
.readout span{margin-left:.9em}
.readout b{display:inline-block;min-width:2.4ch;font-weight:400;color:var(--ink);text-align:right}
.stage-pause{display:grid;place-items:center;width:2.4rem;height:2.4rem;padding:0;border:1.5px solid var(--line-strong);border-radius:50%;background:transparent;color:var(--ink);cursor:pointer;transition:background-color .25s}
.stage-pause:hover{background:color-mix(in srgb,var(--ink) 10%,transparent)}
.stage-pause .i-play{display:none}
.stage-pause[aria-pressed=true] .i-play{display:block}.stage-pause[aria-pressed=true] .i-pause{display:none}
html:not(.js) .stage-pause{display:none}
@media (prefers-reduced-motion:reduce){.stage-pause{display:none}}

/* ---------- home sections */
.about,.projects{margin-top:clamp(4.5rem,10vw,8rem)}
.about-grid{display:grid;gap:2.5rem 4rem}
@media (min-width:860px){.about-grid{grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);align-items:start}}
.prose{max-width:38rem}
.prose p{font-size:1.12rem}
.skills{border-bottom:1px solid var(--line-strong)}
.skills>div{display:flex;justify-content:space-between;gap:1rem;padding:.85rem 0;border-top:1px solid var(--line-strong)}
.skills dt{font-weight:700}
.skills dd{color:var(--muted);font:400 .85rem/1.6 var(--mono);text-align:right}
.skills .more-row dt{font-weight:400;color:var(--muted)}
.sec-lead{max-width:44rem;color:var(--muted);font-size:1.1rem;margin-bottom:1rem}
.feature{display:grid;gap:1.4rem clamp(1.5rem,5vw,4.5rem);align-items:center;padding-block:clamp(1.8rem,4vw,3rem);border-top:1px solid var(--line)}
@media (min-width:860px){
  .feature{grid-template-columns:minmax(0,7fr) minmax(0,5fr)}
  .feature.flip{grid-template-columns:minmax(0,5fr) minmax(0,7fr)}
  .feature.flip .f-img{order:2}
}
.f-text h3{font-size:clamp(1.8rem,3.6vw,2.8rem);font-stretch:118%;margin-bottom:.9rem}
.f-text h3 a{color:var(--ink);text-decoration:none}
.f-text h3 a:hover{color:var(--link)}
.f-text p{max-width:34rem}
.f-img{display:block;margin:9px}
@media (prefers-reduced-motion:no-preference){@supports (animation-timeline:view()){
  .feature .print{animation:print linear both;animation-timing-function:steps(20,jump-end);animation-timeline:view();animation-range:entry 0% entry 85%}
}}

.band{margin-top:clamp(4.5rem,10vw,8rem);padding-block:clamp(3rem,7vw,5.5rem);background:var(--band);color:var(--band-ink);
  --ink:#edf0fa;--muted:#a2acc6;--line:rgba(237,240,250,.16);--line-strong:rgba(237,240,250,.34);--btn:#fff;--btn-ink:#0b1022;--link:#8397ff;--orange:#ff7a45;--bg:#10162a}
.band-in{display:grid;gap:2.2rem clamp(2rem,6vw,5rem);align-items:center}
@media (min-width:860px){.band-in{grid-template-columns:minmax(0,1.05fr) minmax(0,1fr)}}
.band h2{font-size:clamp(2rem,4.4vw,3.4rem);font-stretch:122%;margin-bottom:1rem}
.band p{max-width:34rem;color:var(--muted);font-size:1.12rem}
.band .btn.ghost{border-color:#edf0fa;color:#edf0fa}
.band-img{margin:9px;aspect-ratio:16/9}
.band-img img{position:absolute;inset:0;height:100%;object-fit:cover}

.cta{padding-block:clamp(4rem,9vw,7rem) 1rem;text-align:left}
.cta h2{font-size:clamp(1.55rem,3.2vw,2.3rem);font-stretch:118%;margin-bottom:.8rem}
.cta p{color:var(--muted);font-size:1.12rem;max-width:34rem}
.big-mail{display:inline-block;margin:.4rem 0 0;color:var(--ink);font-stretch:125%;font-weight:800;font-size:clamp(1.3rem,5.4vw,3.7rem);line-height:1.1;letter-spacing:-.035em;text-decoration:none;
  background:linear-gradient(var(--orange),var(--orange)) 0 100%/100% .09em no-repeat;transition:background-size .4s var(--ease),color .3s}
.big-mail:hover,.big-mail:focus-visible{color:var(--link);background-size:100% .22em}

/* ---------- inner pages */
.pagehead{padding-top:clamp(2.5rem,6vw,4.5rem);padding-bottom:clamp(1.5rem,3vw,2.5rem)}
.pagehead h1,.p-head h1{font-size:clamp(2.6rem,7vw,5.2rem);font-stretch:125%;font-weight:850;line-height:.92;letter-spacing:-.035em;margin-bottom:1.2rem}
.pagehead .lead{max-width:44ch}
.pgrid{display:grid;gap:3rem 2.5rem;margin-top:1rem;padding-bottom:2rem}
@media (min-width:640px){.pgrid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1000px){.pgrid{grid-template-columns:repeat(3,minmax(0,1fr))}}
.pcard{display:flex;flex-direction:column}
.pcard .p-img{margin:9px 9px 1.2rem}
.pcard h2{font-size:1.6rem;font-stretch:118%;margin-bottom:.6rem}
.pcard h2 a{color:var(--ink);text-decoration:none}
.pcard h2 a:hover{color:var(--link)}
.pcard p:last-child{color:var(--muted);margin:0}

.p-head{padding-top:clamp(2rem,5vw,3.5rem)}
.crumb{margin:0 0 1.2rem;color:var(--muted);font-size:.92rem}
.crumb a{color:var(--muted)}
.p-meta{display:flex;flex-wrap:wrap;align-items:center;gap:.4rem 1.1rem;margin:1.2rem 0 0;color:var(--muted)}
.p-meta .status{display:inline-flex;align-items:center;gap:.5rem;color:var(--ink);font-weight:600}
.p-meta .status::before{content:"";width:.6rem;height:.6rem;border-radius:50%;background:var(--orange)}
.p-top{display:grid;gap:1.8rem 4rem;padding-top:clamp(2rem,5vw,3.5rem);padding-bottom:1rem;grid-template-areas:"text" "hero" "facts"}
.p-top>.p-head{grid-area:text;padding:0}
.p-top>.p-hero{grid-area:hero}
.p-top>.facts{grid-area:facts;align-self:start}
@media (min-width:900px){
  .p-top{grid-template-columns:minmax(0,1fr) minmax(0,24rem);grid-template-areas:"text hero" "facts hero";grid-template-rows:auto 1fr;align-items:start}
}
.p-hero{margin:9px 9px 0}
.p-hero img{aspect-ratio:var(--ar)}
.facts{display:grid;grid-template-columns:repeat(auto-fit,minmax(11rem,1fr));gap:1px;margin-top:1.4rem;background:var(--line-strong);border:1.5px solid var(--ink)}
.facts>div{padding:.8rem 1rem;background:var(--bg)}
.facts dt{color:var(--muted);font-size:.84rem}
.facts dd{font-weight:700;line-height:1.3}
.p-body{display:grid;gap:2rem 4rem;margin-top:clamp(3rem,7vw,5rem)}
@media (min-width:1000px){.p-body{grid-template-columns:11.5rem minmax(0,1fr)}}
.toc{display:none}
@media (min-width:1000px){.toc{display:block;position:sticky;top:calc(var(--head) + 2rem);align-self:start}}
.toc-h{margin:0 0 .6rem;color:var(--muted);font-size:.88rem}
.toc a{display:block;padding:.35rem 0 .35rem .9rem;border-left:2px solid var(--line);color:var(--muted);font-size:.95rem;text-decoration:none;transition:color .2s,border-color .2s}
.toc a:hover{color:var(--ink)}
.toc a[aria-current]{border-color:var(--orange);color:var(--ink);font-weight:600}
.p-main{max-width:50rem;min-width:0}
.psec+.psec{margin-top:clamp(3rem,7vw,5rem)}
.psec>p{max-width:42rem;font-size:1.1rem}
.cols{display:grid;gap:1.5rem 2rem;margin:1.8rem 0}
@media (min-width:700px){.cols{grid-template-columns:repeat(3,minmax(0,1fr))}}
.cols li{padding-top:1rem;border-top:2px solid var(--ink)}
.cols h3,.rows dt,.callout h3,.tl-body h3{font-size:1.15rem;font-weight:800;font-stretch:112%;letter-spacing:-.01em;line-height:1.2;margin-bottom:.5rem}
.cols p{margin:0;color:var(--muted)}
.rows{margin:1rem 0}
.rows>div{display:grid;gap:.3rem 2rem;padding:1.1rem 0;border-top:1px solid var(--line-strong)}
.rows>div:last-child{border-bottom:1px solid var(--line-strong)}
@media (min-width:700px){.rows>div{grid-template-columns:13rem minmax(0,1fr)}}
.rows dt{margin:0}
.rows dd{color:var(--muted)}
.pair{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,16rem),1fr));gap:2rem 1.6rem;margin:2rem 0}
.fig{margin:0}
.fig .lb{display:block;margin:9px;cursor:zoom-in}
.fig .plate img{aspect-ratio:var(--ar)}
.fig figcaption{margin:.9rem 9px 0;color:var(--muted);font-size:.92rem}
.fig.small{padding:1.2rem 1rem 1rem;background:var(--panel);display:flex;flex-direction:column;align-items:center}
.fig.small .lb{width:100%;max-width:var(--mw)}
.fig.small figcaption{text-align:center}
.fig.wide{margin:2rem 0}
.fig.small:not(.wide){margin:0}
.fig.wide.small{max-width:36rem}
.callout{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:1.2rem 2rem;margin:1.5rem 0;padding:1.4rem 1.5rem;border:1.5px solid var(--ink);background:var(--surface)}
.callout p{margin:0;color:var(--muted);max-width:34rem}
.callout .btn{flex:none}
.timeline{margin:2rem 0 1rem}
.timeline>li{position:relative;display:grid;grid-template-columns:2.6rem minmax(0,1fr);gap:0 1.3rem;padding-bottom:2.4rem}
.timeline>li::before{content:"";position:absolute;left:1.3rem;top:2.7rem;bottom:.2rem;width:2px;margin-left:-1px;background:var(--line-strong)}
.timeline>li:last-child{padding-bottom:0}
.timeline>li:last-child::before{display:none}
.node{display:grid;place-items:center;width:2.6rem;height:2.6rem;border:2px solid var(--ink);border-radius:50%;background:var(--bg);font:400 .9rem/1 var(--mono)}
.timeline>li:last-child .node{background:var(--orange);border-color:var(--orange);color:#0b1022}
.tl-body{padding-top:.35rem}
.tl-body h3{font-size:1.3rem}
.tl-body p{max-width:40rem}
.tl-body .fig{max-width:25rem;margin-top:1.2rem}
.adjs{display:grid;gap:1.2rem;margin-top:clamp(4rem,9vw,6rem)}
@media (min-width:700px){.adjs{grid-template-columns:repeat(2,minmax(0,1fr))}}
.adj{display:flex;align-items:center;gap:1.1rem;padding:.9rem;border:1px solid var(--line-strong);color:var(--ink);text-decoration:none;transition:border-color .25s,transform .35s var(--ease)}
.adj:hover,.adj:focus-visible{border-color:var(--ink);transform:translateY(-3px)}
.adj.next{flex-direction:row-reverse;text-align:right}
.adj-img{flex:none;width:5.2rem;aspect-ratio:4/3}
.adj-img::after{display:none}
.adj-t small{display:block;color:var(--muted);font-size:.86rem}
.adj-t b{font-stretch:112%;font-size:1.15rem}
.adjs.one{grid-template-columns:1fr}
@media (min-width:700px){.adjs.one{grid-template-columns:minmax(0,1fr)}}

/* the Arduino listing */
.code-head .btnrow{margin-bottom:0}
.codewrap{margin:1.2rem 0 0;overflow:auto;max-height:min(80vh,60rem);background:#0b1022;color:#dbe2fa;border:1.5px solid var(--ink)}
.code{margin:0;padding:1rem 0;counter-reset:ln;font:400 .84rem/1.65 var(--mono);tab-size:4;min-width:max-content}
.code code{display:block;font:inherit}
.l{display:block;padding:0 1.2rem 0 0;white-space:pre}
.l::before{counter-increment:ln;content:counter(ln);display:inline-block;width:3.6rem;padding-right:1.1rem;margin-right:.2rem;text-align:right;color:#6e7aa3;user-select:none;-webkit-user-select:none}
.t-c{color:#8d9cc8;font-style:normal}.t-p{color:#ff9a70}.t-s{color:#ffd58a}.t-n{color:#ffa6c9}.t-k{color:#a5b4ff}.t-t{color:#7de0c0}.t-v{color:#ffb86b}.t-f{color:#8fd0ff}

/* blog */
.posts{display:grid;gap:3rem;padding-bottom:1rem}
.post{display:grid;gap:1.4rem 2.5rem;align-items:center}
@media (min-width:760px){.post{grid-template-columns:minmax(0,5fr) minmax(0,6fr)}}
.post .b-img{margin:9px}
.post h2{font-size:clamp(1.6rem,3vw,2.3rem);font-stretch:118%;margin-bottom:.8rem}
.post h2 a{color:var(--ink);text-decoration:none}.post h2 a:hover{color:var(--link)}
.post p:last-child{color:var(--muted);margin:0}
.post-page h1{font-size:clamp(2rem,4.6vw,3.6rem);line-height:1;letter-spacing:-.03em}
.post-img{margin:1.8rem 9px 9px;aspect-ratio:16/9;max-width:56rem}
.post-img img{position:absolute;inset:0;height:100%;object-fit:cover}
.article{padding-top:clamp(2rem,4vw,3rem);max-width:calc(38rem + 2 * var(--gut));margin-left:max(0px,calc((100% - 1200px - 2 * var(--gut)) / 2));margin-right:auto}   /* the text lines up with the title and the picture above it */
.article h2{font-size:1.5rem;font-stretch:118%;margin:2.4rem 0 .8rem}
.watch{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:1rem 2rem;margin:2.6rem 0 0;padding:1.4rem 1.5rem;border:1.5px solid var(--ink);background:var(--surface)}
.watch h2{margin:0 0 .3rem;font-size:1.25rem}.watch p{margin:0;color:var(--muted)}

.contact .big-mail{margin-top:1.4rem}
.facts-list{margin-top:3rem;max-width:36rem;border-bottom:1px solid var(--line-strong)}
.facts-list li{display:flex;justify-content:space-between;gap:1rem;padding:.85rem 0;border-top:1px solid var(--line-strong)}
.facts-list span{color:var(--muted)}

/* ---------- footer, toast */
.site-footer{margin-top:clamp(4.5rem,10vw,8rem);padding-block:3rem 2rem;border-top:1px solid var(--line-strong)}
.foot-cols{display:grid;grid-template-columns:repeat(auto-fit,minmax(13rem,1fr));gap:2rem}
.foot h2{margin-bottom:.8rem;font-size:1rem;font-stretch:112%}
.foot li{padding:.15rem 0}
.foot a{color:var(--ink)}
.foot a:hover{color:var(--link)}
.foot-base{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:1rem;margin-top:3rem;padding-top:1.4rem;border-top:1px solid var(--line);color:var(--muted);font-size:.9rem}
.foot-base p{margin:0}
.totop{display:inline-flex;align-items:center;gap:.4rem;color:var(--muted)}
.toast{position:fixed;left:50%;bottom:1.4rem;z-index:90;translate:-50% 18px;padding:.65rem 1.15rem;border-radius:999px;background:var(--ink);color:var(--bg);font-size:.9rem;font-weight:600;opacity:0;pointer-events:none;transition:opacity .3s,translate .5s var(--ease)}
.toast.show{opacity:1;translate:-50% 0}

/* ---------- picture viewer (opened from the pictures on a project page) */
.lightbox{touch-action:pinch-zoom;width:100%;height:100%;max-width:none;max-height:none;margin:0;padding:0;border:0;background:rgba(5,8,18,.96);color:#edf0fa;overflow:hidden}
.lightbox::backdrop{background:rgba(5,8,18,.6)}
.lightbox[open]{display:grid;grid-template-rows:minmax(0,1fr) auto;animation:fade .3s var(--ease)}
.lb-stage{display:grid;grid-template:minmax(0,1fr)/minmax(0,1fr);place-items:center;min-height:0;min-width:0;overflow:hidden;padding:3.5rem 4.5rem 0}
.lb-stage img{max-width:100%;max-height:100%;width:auto;height:auto;object-fit:contain;animation:lbin .45s var(--ease)}
.lb-cap{padding:1rem 4.5rem 1.4rem;text-align:center;font-size:.98rem}
.lb-cap small{display:block;margin-top:.2rem;color:#a2acc6}
.lb-btn{position:absolute;display:grid;place-items:center;width:3rem;height:3rem;padding:0;border:0;border-radius:50%;background:rgba(255,255,255,.12);color:#fff;cursor:pointer;transition:background-color .2s}
.lb-btn:hover,.lb-btn:focus-visible{background:rgba(255,255,255,.26)}
.lb-btn:focus-visible{outline-color:#fff}
.lb-close{top:.8rem;right:.8rem}
.lb-prev,.lb-next{top:50%;translate:0 -50%}
.lb-prev{left:.8rem}.lb-next{right:.8rem}
.lb-btn[hidden]{display:none}
@media (max-width:640px){.lb-stage{padding:3.5rem .6rem 0}.lb-cap{padding-inline:1rem}.lb-prev,.lb-next{top:auto;bottom:4.6rem;translate:none}.lb-prev{left:1rem}.lb-next{right:1rem}}
@keyframes fade{from{opacity:0}}
@keyframes lbin{from{opacity:0;scale:.97}}

/* ---------- page-to-page motion: pages fade over each other and project covers glide into place */
@media (prefers-reduced-motion:no-preference){
  @view-transition{navigation:auto}
  ::view-transition-old(root){animation:vt-out .25s var(--ease) both}
  ::view-transition-new(root){animation:vt-in .5s var(--ease) both}
  ::view-transition-group(*){animation-duration:.6s;animation-timing-function:var(--ease)}
}
@keyframes vt-out{to{opacity:0}}
@keyframes vt-in{from{opacity:0;translate:0 12px}}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important;scroll-behavior:auto !important}}
@media print{.site-header,.site-footer,.stage,.toast,.progress{display:none}body{background:#fff;color:#000}}