/* Motion is a progressive enhancement; content remains visible without JS. */
#reading-progress{position:fixed;top:0;left:0;right:0;height:2px;background:#8ba76b;transform:scaleX(0);transform-origin:left;z-index:60;pointer-events:none}
.portrait-card{padding:16px;background:var(--bg);gap:14px;min-height:0;border-radius:9px;transform:rotate(-1.5deg)}
.portrait-card>.section-kicker{padding:5px 5px 1px}
.portrait-frame{position:relative;overflow:hidden;border-radius:5px;isolation:isolate}
.portrait-frame>img{display:block;width:100%;height:auto;aspect-ratio:1;object-fit:cover;object-position:40% center;transition:transform .7s ease}
.portrait-frame:after{content:'';position:absolute;inset:0;background:linear-gradient(transparent 65%,#19302533);pointer-events:none}
.portrait-card:hover .portrait-frame>img{transform:scale(1.025)}
.portrait-signature{font-family:var(--serif);font-style:italic;font-size:56px;line-height:1;position:absolute;bottom:18px;right:19px;color:#fff;z-index:1;text-shadow:0 2px 20px #0004;letter-spacing:-5px}
.portrait-card>.about-caption{padding:11px 5px 2px}
.lab-section{padding:5px 0 90px}
.lab-section h2{font-size:39px;font-weight:400;letter-spacing:-1.9px;line-height:1.25;margin:15px 0 0}
.lab-section h2 .serif{color:var(--green)}
.lab-shell{display:grid;grid-template-columns:minmax(260px,.85fr) minmax(0,1.2fr);border:1px solid var(--line);border-radius:13px;overflow:hidden;background:var(--surface)}
.lab-controls{padding:35px 33px;background:var(--soft)}
.lab-overline{display:flex;align-items:center;gap:9px;font-size:8px;letter-spacing:1.6px;color:var(--muted)}
.lab-controls h3{font-size:24px;font-weight:400;letter-spacing:-.8px;line-height:1.4;margin:20px 0 10px}
.lab-controls>p{font-size:12px;color:var(--muted);line-height:1.85;max-width:300px;margin:0 0 25px}
.lab-input{margin-top:24px}
.lab-input label{display:flex;justify-content:space-between;align-items:center;font-size:11px;gap:15px;margin-bottom:7px}
.lab-input output{font:12px 'Courier New',monospace;font-weight:700;color:var(--green);white-space:nowrap}
.lab-input input{width:100%;margin:0;height:32px;background:transparent;cursor:pointer;accent-color:#699b7b;touch-action:pan-y}
.lab-input input:focus-visible{outline:2px solid #85aa61;outline-offset:3px;border-radius:3px}
.range-limits{display:flex;justify-content:space-between;font:9px 'Courier New',monospace;color:var(--muted)}
.lab-supply{display:flex;align-items:center;justify-content:space-between;margin-top:25px;border-top:1px solid var(--line);padding-top:17px;font:9px 'Courier New',monospace;color:var(--muted)}
.lab-supply button{font:10px Arial,sans-serif;background:transparent;padding:5px 0;color:var(--green)}
.lab-controls>.lab-explanation{font-size:10px;line-height:1.85;max-width:100%;margin:17px 0 0;min-height:38px}
.lab-visual{padding:23px 28px 22px;min-width:0}
.lab-diagram-heading{display:flex;justify-content:space-between;gap:12px;font-size:8px;color:var(--muted);letter-spacing:1.2px}
.lab-diagram-heading>span:last-child{letter-spacing:0;font-size:9px}
.phasor-diagram{width:100%;max-height:310px;display:block;color:var(--muted);margin:10px 0 0;overflow:visible}
.axis-label{font:10px 'Courier New',monospace;fill:var(--muted)}
.angle-label{font:12px 'Courier New',monospace;fill:#a97d36}
.phasor-legend{display:flex;justify-content:center;gap:23px;color:var(--muted);font-size:9px;margin:8px 0 23px}
.phasor-legend>span{display:flex;align-items:center;gap:6px}
.phasor-legend i{height:2px;width:13px;display:inline-block}
.legend-total{background:#c09349}.legend-r{background:#699b7b}.legend-l{background:#819ab8}
.lab-results{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border-top:1px solid var(--line);padding-top:19px;gap:10px}
.lab-results>div{min-width:0;padding-right:8px}
.lab-results>div+div{border-left:1px solid var(--line);padding-left:18px}
.lab-results span{display:block;font-size:7px;letter-spacing:1.3px;color:var(--muted)}
.lab-results strong{font-size:26px;letter-spacing:-1px;font-weight:400;line-height:1.6;white-space:nowrap;font-variant-numeric:tabular-nums}
.lab-secondary{display:flex;gap:22px;margin-top:15px;color:var(--muted);font:9px 'Courier New',monospace;flex-wrap:wrap}
.lab-secondary strong{font-weight:400;margin-left:6px}
.lab-method{margin-top:14px;border-bottom:1px solid var(--line);padding:0 0 13px;color:var(--muted)}
.lab-method summary{font-size:11px;cursor:pointer;width:fit-content;list-style-position:inside;padding:7px 0}
.lab-method>div{padding:7px 0 7px;max-width:950px;font-size:11px;line-height:1.9}
.lab-method p{margin:0 0 10px}
.lab-method code{font-size:10px;display:block;overflow-wrap:anywhere;word-break:normal}
dialog{width:min(820px,calc(100% - 32px))}
.dialog-art{width:100%;height:300px;max-height:none;aspect-ratio:auto}
.dialog-close{position:sticky;top:12px;right:auto;margin:12px 12px -48px auto;z-index:4}
.case-study{border-top:1px solid var(--line);margin:24px 0 17px}
.case-step{display:grid;grid-template-columns:130px 1fr;gap:20px;padding:17px 0;border-bottom:1px solid var(--line)}
.case-step h3{font-size:10px;font-weight:500;line-height:1.7;margin:0}
.case-step h3>span{display:block;font:8px 'Courier New',monospace;color:#8ba17d;margin-bottom:4px}
.case-step p{margin:0;font-size:12px;line-height:1.9;color:var(--muted)}
.case-gallery{margin:27px 0 20px}
.case-gallery>h3{font-size:13px;font-weight:500;letter-spacing:-.2px;margin:0 0 13px}
.screenshot-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:15px}
.shot{margin:0;border:1px solid var(--line);border-radius:7px;overflow:hidden;background:var(--soft)}
.shot a{display:block;padding:13px}
.shot img{display:block;width:100%;height:265px;object-fit:contain;object-position:top center}
.shot.wide img{object-position:center}
.shot figcaption{font-size:9px;line-height:1.8;color:var(--muted);display:flex;justify-content:space-between;gap:9px;padding-top:12px}
.shot figcaption>span{font-size:14px;color:var(--green)}
.shot a:hover{background:var(--bg)}
.pwa-tools{display:flex;align-items:center;justify-content:space-between;gap:20px;font-size:9px;color:var(--muted);margin-top:-30px;min-height:20px;margin-bottom:23px}
.pwa-tools button{font-size:10px;color:var(--green);background:transparent;padding:8px 0}
.pwa-tools [hidden],.connection-status[hidden]{display:none}
.connection-status{position:fixed;bottom:15px;left:50%;transform:translateX(-50%);z-index:65;background:var(--text);color:var(--bg);border:1px solid var(--line);padding:11px 17px;border-radius:7px;font-size:11px;line-height:1.7;width:max-content;max-width:calc(100% - 32px);box-shadow:var(--shadow)}
@media(prefers-reduced-motion:no-preference){
  @keyframes rise-in{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}
  @keyframes hero-art-in{from{opacity:0;translate:0 12px}to{opacity:1;translate:0 0}}
  @keyframes signal-draw{from{stroke-dashoffset:410}to{stroke-dashoffset:0}}
  @keyframes dialog-enter{from{opacity:0;transform:translateY(12px) scale(.99)}to{opacity:1;transform:translateY(0) scale(1)}}
  .hero .eyebrow{animation:rise-in .6s ease-out both}
  .hero h1{animation:rise-in .7s .08s ease-out both}
  .hero-description{animation:rise-in .7s .15s ease-out both}
  .hero-buttons{animation:rise-in .7s .22s ease-out both}
  .hero-art .central-tile{animation:hero-art-in .9s .12s ease-out both}
  .hero-art .orbit-label{animation:hero-art-in .7s .3s ease-out both}
  .hero-art .signal-card{animation:hero-art-in .8s .4s ease-out both}
  .signal-card svg path{stroke-dasharray:410;animation:signal-draw 2s .8s ease-out both}
  .reveal-pending{opacity:0;transform:translateY(14px)}
  .is-revealed{animation:rise-in .55s ease-out both}
  dialog[open]{animation:dialog-enter .22s ease-out both}
}
@media(max-width:1100px){.lab-section h2{font-size:34px}.lab-controls{padding:28px}.lab-visual{padding-inline:23px}.lab-results strong{font-size:23px}.lab-results>div+div{padding-left:12px}.lab-results span{font-size:6px;letter-spacing:1px}}
@media(max-width:900px){.lab-section h2{font-size:30px}.lab-controls{padding:25px}.lab-controls h3{font-size:21px}.lab-controls>p{font-size:11px}.lab-controls>.lab-explanation{font-size:10px}.lab-visual{padding:22px 18px}.lab-results strong{font-size:20px}.lab-results>div+div{padding-left:9px}.lab-results{gap:7px}.lab-secondary{font-size:8px;gap:13px}.lab-diagram-heading{font-size:7px;letter-spacing:.6px}.lab-diagram-heading>span:last-child{font-size:8px}}
@media(max-width:700px){.lab-section{padding:0 0 58px}.lab-section h2{font-size:31px;letter-spacing:-1.3px}.lab-shell{grid-template-columns:1fr}.lab-controls{order:2;padding:23px;border-top:1px solid var(--line)}.lab-visual{order:1;padding:19px 23px 17px}.lab-controls h3,.lab-controls>p:not(.lab-explanation){display:none}.lab-overline{font-size:7px}.lab-input{margin-top:17px}.lab-input input{height:28px}.lab-input label{font-size:11px;margin-bottom:2px}.lab-input output{font-size:11px}.lab-supply{margin-top:17px;padding-top:11px}.lab-controls>.lab-explanation{min-height:0;margin-top:10px}.phasor-diagram{height:220px;margin-top:0}.phasor-legend{font-size:8px;margin:0 0 17px}.lab-results{padding-top:13px}.lab-results strong{font-size:23px}.lab-results span{font-size:6px;letter-spacing:1px}.lab-secondary{margin-top:10px;font-size:8px;gap:19px}.lab-method summary{font-size:10px}.lab-method>div{font-size:10px}.lab-method code{font-size:9px}.portrait-card{padding:13px;gap:12px;min-height:0}.portrait-frame>img{aspect-ratio:1.04}.portrait-signature{font-size:47px}.portrait-card>.about-caption{font-size:6px}.case-step{grid-template-columns:1fr;gap:7px;padding:15px 0}.case-step h3{display:flex;align-items:baseline;gap:9px;font-size:11px}.case-step h3>span{margin:0}.case-step p{font-size:11px}.screenshot-grid{gap:10px}.shot a{padding:9px}.shot img{height:205px}.shot figcaption{font-size:8px;line-height:1.7;min-height:44px}.pwa-tools{font-size:8px;flex-wrap:wrap;gap:7px;margin-top:-15px;margin-bottom:19px}.connection-status{font-size:10px}.case-gallery>h3{font-size:12px}}
@media print{#reading-progress,.lab-section,.pwa-tools,.connection-status{display:none!important}.reveal-pending{opacity:1;transform:none}.portrait-card{display:none}.is-revealed{animation:none!important}}
@media(max-width:700px){.lab-controls{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:13px 18px}.lab-controls>.lab-overline,.lab-controls>.lab-supply,.lab-controls>.lab-explanation{grid-column:1/-1}.lab-input{margin-top:0;min-width:0}.lab-input label{flex-direction:column;align-items:flex-start;gap:3px}.lab-supply{margin-top:0;padding-top:11px}.lab-controls>.lab-explanation{margin-top:0}.axis-label{font-size:13px}.angle-label{font-size:15px}}
@media(max-width:700px){.dialog-art{height:210px}.dialog-art.hava{height:230px}}

/* A small scroll-driven flight, with the real runway at the document end. */
.flight-symbols{position:absolute;width:0;height:0;overflow:hidden;pointer-events:none}
.scroll-plane{position:fixed;left:0;top:0;width:76px;aspect-ratio:104/48;color:var(--green);pointer-events:none;z-index:20;opacity:0;will-change:transform;transform-origin:center;filter:drop-shadow(0 3px 4px #233c281c)}
.scroll-plane.is-ready{opacity:.94}
.scroll-plane>svg{display:block;width:100%;height:100%}
.modal-open .scroll-plane{opacity:0}
.flight-dock{position:relative;height:109px;padding-bottom:26px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.flight-caption{display:flex;flex-direction:column;gap:4px;min-width:0;flex:1}
.flight-kicker{font-size:7px;letter-spacing:1.5px;color:var(--muted);line-height:1.7}
.flight-message{font:italic 17px/1.4 var(--serif);color:var(--green);letter-spacing:-.25px}
.flight-status{font:7px/1.8 'Courier New',monospace;letter-spacing:.8px;color:var(--muted)}
.flight-dock.is-landed .flight-status{color:var(--green)}
.flight-runway{position:relative;width:240px;height:24px;border-top:2px solid var(--muted);background:var(--soft);flex:none;align-self:flex-end;margin-bottom:8px;color:var(--green);border-radius:1px}
.flight-runway:before{content:'';position:absolute;left:27px;right:10px;top:10px;border-top:2px dashed var(--muted);opacity:.3}
.flight-runway:after{content:'';position:absolute;top:-4px;left:0;width:3px;height:3px;border-radius:50%;background:#98ae79;box-shadow:48px 0 #98ae79,96px 0 #98ae79,144px 0 #98ae79,192px 0 #98ae79,237px 0 #98ae79}
.runway-threshold{position:absolute;left:7px;top:4px;width:2px;height:13px;background:var(--muted);box-shadow:5px 0 var(--muted),10px 0 var(--muted);opacity:.6}
.runway-label{position:absolute;right:12px;bottom:-18px;font:7px 'Courier New',monospace;letter-spacing:2px;color:var(--muted)}
.airport-tower{position:absolute;width:23px;height:43px;left:-30px;top:-42px;opacity:.45}
.parked-plane{position:absolute;width:76px;aspect-ratio:104/48;bottom:21px;left:72%;transform:translateX(-50%);--landing-gear:1}
.flight-dock.is-tracking .parked-plane{display:none}
.landing-puff{position:absolute;left:70%;top:-9px;height:7px;width:24px;background:var(--muted);border-radius:50%;opacity:0;pointer-events:none}
@media(prefers-reduced-motion:no-preference){@keyframes touchdown-puff{0%{opacity:0;transform:translateX(0) scale(.6)}35%{opacity:.18}100%{opacity:0;transform:translateX(-20px) scale(1.7)}}.is-landed.is-tracking .landing-puff{animation:touchdown-puff .65s ease-out both}.scroll-plane{transition:opacity .15s ease}}
@media(max-width:700px){.scroll-plane,.parked-plane{width:58px}.flight-dock{height:111px;padding-bottom:26px;gap:14px}.flight-runway{width:clamp(112px,36vw,150px)}.flight-runway:after{box-shadow:28px 0 #98ae79,56px 0 #98ae79,84px 0 #98ae79,110px 0 #98ae79}.flight-kicker{font-size:6px;letter-spacing:1px}.flight-message{font-size:14px;max-width:170px}.flight-status{font-size:6px;letter-spacing:.4px}.parked-plane{bottom:21px}.airport-tower{left:-21px;width:18px;height:35px;top:-34px}}
@media(prefers-reduced-motion:reduce){.scroll-plane{display:none}.flight-dock .parked-plane{display:block}}
@media print{.scroll-plane,.flight-dock,.flight-symbols{display:none!important}}
.scroll-parachutist{position:fixed;left:0;top:0;width:64px;aspect-ratio:100/150;pointer-events:none;z-index:20;color:var(--green);opacity:0;will-change:transform;transform-origin:50% 25%;filter:drop-shadow(0 3px 4px #233c2815)}
.scroll-parachutist>svg{display:block;width:100%;height:100%}
.scroll-parachutist.is-ready{opacity:1}
.modal-open .scroll-parachutist,.modal-open .flight-burst{opacity:0}
.flight-burst{position:fixed;left:0;top:0;width:86px;height:86px;pointer-events:none;z-index:21;visibility:hidden}
.flight-burst>svg{display:block;width:100%;height:100%;opacity:0}
.flight-burst.is-active{visibility:visible}
.parked-parachutist{display:none;position:absolute;left:72%;bottom:16px;width:64px;aspect-ratio:100/150;transform:translateX(-50%)}
.flight-dock[data-flight-variant=parachute]{height:155px}
.flight-dock[data-flight-variant=parachute] .parked-plane{display:none}
.flight-dock[data-flight-variant=parachute]:not(.is-tracking) .parked-parachutist{display:block}
@media(prefers-reduced-motion:no-preference){@keyframes little-flight-pop{0%{opacity:0;transform:scale(.25) rotate(-12deg)}20%{opacity:1}65%{opacity:.55}100%{opacity:0;transform:scale(1.4) rotate(14deg)}}.flight-burst.is-active>svg{animation:little-flight-pop .7s ease-out both}.scroll-parachutist{transition:opacity .16s ease}}
@media(max-width:700px){.scroll-parachutist,.parked-parachutist{width:50px}.parked-parachutist{bottom:18px}.flight-dock[data-flight-variant=parachute]{height:145px}}
@media(prefers-reduced-motion:reduce){.scroll-parachutist,.flight-burst{display:none}}
@media print{.scroll-parachutist,.flight-burst{display:none!important}}