@font-face{font-family:Instrument;src:url('../../assets/fonts/instrument-sans-latin-400-normal.woff2');font-display:swap}
@font-face{font-family:Instrument;src:url('../../assets/fonts/instrument-sans-latin-600-normal.woff2');font-weight:600;font-display:swap}
@font-face{font-family:Anybody;src:url('../../assets/fonts/anybody-var.woff2');font-weight:100 900;font-display:swap}
@font-face{font-family:JetBrains;src:url('../../assets/fonts/jetbrains-mono-latin-400-normal.woff2');font-display:swap}
@font-face{font-family:JetBrains;src:url('../../assets/fonts/jetbrains-mono-latin-500-normal.woff2');font-weight:500;font-display:swap}

:root{--app-accent:#ff8a1f;--accent-text:#ff9d43;--bg:#0b1015;--panel:#111920;--raised:#1d2832;--line:#2b3741;--fg:#ecf0f2;--muted:#a3afb9;--soft:#7d8a95;
  --good:#71d8bd;--warn:#ffc66b;--bad:#ff7a66;--ray-sub:#ff8a1f;--ray-bg:#62d9ef;--ray-near:#f27bd0;--stage:#0a1117;--stage-line:#1d2a35;--metal:#26323d;--metal-edge:#3b4955;--glass:#9fd7ee;
  --font:Instrument,system-ui,sans-serif;--display:Anybody,system-ui,sans-serif;--mono:JetBrains,ui-monospace,monospace}
:root[data-theme=light]{--bg:#f4f2ee;--panel:#fff;--raised:#eeeae4;--line:#d8d3cb;--fg:#1b2933;--muted:#5c6870;--soft:#7a858c;--accent-text:#a64c00;
  --good:#167a62;--warn:#9a6200;--bad:#b8321f;--ray-sub:#e56f00;--ray-bg:#0a84a0;--ray-near:#b5338e;--stage:#f8f6f2;--stage-line:#e4ded5;--metal:#dcd6cd;--metal-edge:#b9b1a6;--glass:#7fc3df}

body{font-family:var(--font);font-size:15px;background:radial-gradient(ellipse at 88% 0,#ff8a1f0d,transparent 40%),var(--bg)}
button{transition:background .15s,border-color .15s;touch-action:manipulation}
button.primary{background:var(--app-accent);color:#241204;border-color:var(--app-accent)}button.primary:hover{background:#ffa24b;border-color:#ffa24b}
button[aria-pressed=true]{border-color:var(--app-accent);background:color-mix(in srgb,var(--app-accent) 12%,var(--panel))}
button:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible,a:focus-visible{outline:2px solid var(--app-accent);outline-offset:3px}
input[type=range]{accent-color:var(--app-accent);min-height:36px}
output{color:var(--accent-text);font:500 13px var(--mono)}
.eyebrow{font:10px var(--mono);color:var(--accent-text);letter-spacing:.11em;margin-bottom:9px}

/* header + hero */
.app-header{max-width:none;padding:12px max(24px,calc((100vw - 1400px)/2));min-height:70px}
.app-header strong{font-size:12px;letter-spacing:.13em}.app-header strong span{margin-left:12px;color:var(--muted);font:10px var(--mono)}
.app-main{max-width:1440px;padding:38px 24px 28px}
.intro{display:flex;align-items:center;justify-content:space-between;gap:30px;padding:0 0 30px}
.intro h1{font:650 clamp(38px,4.8vw,66px)/1.04 var(--display);letter-spacing:-.045em}.intro h1 span{color:var(--accent-text)}
.intro-note{display:flex;align-items:center;gap:22px;max-width:470px}.intro-note p{color:var(--muted);font-size:14px;line-height:1.7}
.intro-glyph{width:92px;height:92px;flex:0 0 92px;fill:none;stroke:var(--accent-text);stroke-width:4;stroke-linecap:round;transform:rotate(-12deg)}

/* question cards */
.section-label{display:flex;justify-content:space-between;gap:12px;font:10px var(--mono);letter-spacing:.11em;color:var(--muted);margin-bottom:10px}
.section-label span:first-child{color:var(--accent-text)}
.question-grid{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:10px;margin-bottom:20px}
.question-grid button{text-align:left;min-width:0;padding:14px 15px 15px;background:var(--panel);border-radius:12px;position:relative;display:flex;flex-direction:column;align-items:flex-start;justify-content:flex-start}
.question-grid button[aria-pressed=true]:after{content:'';position:absolute;inset:auto 15px -1px;height:3px;background:var(--app-accent);border-radius:3px}
.question-grid span{display:block;font:9px var(--mono);color:var(--accent-text);letter-spacing:.06em;margin-bottom:9px}
.question-grid strong{font-size:14.5px;line-height:1.3;display:block}
.question-grid small{display:block;margin-top:6px;font-size:11px;line-height:1.45;color:var(--muted);font-weight:400}

/* bench */
.bench{border:1px solid var(--line);border-radius:17px;overflow:hidden;background:var(--panel);scroll-margin-top:12px;box-shadow:0 18px 60px #00000022}
.bench:focus{outline:none}
.bench-toolbar{padding:12px 16px;display:flex;align-items:center;justify-content:space-between;gap:12px;border-bottom:1px solid var(--line);flex-wrap:wrap}
.tabs{padding:4px;border:1px solid var(--line);border-radius:11px;background:var(--bg);display:flex;gap:4px}
.tabs button{border:0;background:transparent;min-height:38px;font-size:12px;padding:6px 14px}
.tabs button[aria-pressed=true]{background:var(--app-accent);color:#241204}
.tabs button[aria-pressed=false]{color:var(--muted)}
.bench-actions{display:flex;gap:8px;flex-wrap:wrap}.bench-actions button{min-height:42px;font-size:12px}

.meter-strip{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));border-bottom:1px solid var(--line);background:var(--bg)}
.readout{padding:12px 18px 13px;border-right:1px solid var(--line);min-width:0;position:relative}.readout:last-child{border-right:0}
.readout span{display:block;font:9px var(--mono);letter-spacing:.1em;color:var(--muted)}
.readout strong{display:block;font:500 22px/1.35 var(--mono);margin-top:3px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.readout strong small{font:11px var(--mono);color:var(--muted)}
.readout em{display:block;font-style:normal;font-size:11px;color:var(--muted);line-height:1.4;margin-top:1px}
.readout[data-tone]:before{content:'';position:absolute;top:15px;right:14px;width:7px;height:7px;border-radius:50%;background:var(--good);box-shadow:0 0 10px currentColor;color:var(--good)}
.readout[data-tone=warn]:before{background:var(--warn);color:var(--warn)}.readout[data-tone=bad]:before{background:var(--bad);color:var(--bad)}
.readout[data-tone=bad] strong{color:var(--bad)}

.visual-switch{display:none!important}
.visuals{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(0,1fr);border-bottom:1px solid var(--line)}
.panel{padding:16px 18px 18px;min-width:0}
.cutaway-panel{border-right:1px solid var(--line)}
.panel-head{display:flex;justify-content:space-between;align-items:flex-start;gap:12px;margin-bottom:12px;flex-wrap:wrap}
.panel-head h2{font:620 24px/1.1 var(--display);letter-spacing:-.03em}
.legend{display:flex;gap:14px;flex-wrap:wrap;font-size:11px;color:var(--muted);padding-top:4px}
.legend i{display:inline-block;width:14px;height:3px;border-radius:2px;margin-right:6px;vertical-align:middle;background:var(--ray-sub)}
.legend i.bg{background:var(--ray-bg)}.legend i.near{background:repeating-linear-gradient(90deg,var(--ray-near) 0 3px,transparent 3px 5px)}.legend i.dof{height:9px;background:color-mix(in srgb,var(--good) 30%,transparent);border:1px solid color-mix(in srgb,var(--good) 55%,transparent)}
.vf-tag{font:10px var(--mono);letter-spacing:.06em;color:var(--muted);border:1px solid var(--line);border-radius:30px;padding:5px 10px}

/* cutaway svg */
.cutaway-wrap{background:var(--stage);border:1px solid var(--stage-line);border-radius:12px;overflow:hidden}
.cutaway{display:block;width:100%;height:auto;aspect-ratio:760/392}
.cutaway text{font-family:var(--mono)}
.cv-label{font-size:10.5px;fill:var(--muted);letter-spacing:.06em}.cv-label-strong{fill:var(--fg)}
.cv-tick{font-size:10px;fill:var(--soft)}.cv-tick-note{font-style:italic;letter-spacing:.04em}
.cv-ruler line{stroke:var(--soft);stroke-width:1}
.cv-axis{stroke:var(--stage-line);stroke-width:1.2;stroke-dasharray:2 5}
.cv-dof{fill:color-mix(in srgb,var(--good) 13%,transparent);stroke:color-mix(in srgb,var(--good) 45%,transparent);stroke-width:1;transition:x .25s,width .25s}
.cv-dof-label{fill:var(--good);font-size:9.5px}
.hide-dof .cv-dof,.hide-dof .cv-dof-label{display:none}
.cv-focus{stroke:var(--fg);stroke-width:1.2;stroke-dasharray:5 4;opacity:.7}
.cv-focus-label{fill:var(--fg);font-size:10.5px}
.cv-trunk{fill:var(--soft)}.cv-canopy{fill:color-mix(in srgb,var(--ray-bg) 18%,var(--stage));stroke:color-mix(in srgb,var(--ray-bg) 55%,transparent);stroke-width:1}
.cv-bulb{fill:#ffd59a}
.cv-pot{fill:color-mix(in srgb,var(--ray-near) 22%,var(--stage));stroke:color-mix(in srgb,var(--ray-near) 60%,transparent);stroke-width:1}
.cv-stem{fill:none;stroke:var(--good);stroke-width:1.6;stroke-linecap:round;opacity:.85}
.cv-petal{fill:var(--ray-near)}.cv-flower-eye{fill:#ffd59a}
.cv-near-label{fill:var(--ray-near)}
.cv-tick-subject{stroke:var(--ray-sub)!important;stroke-width:2!important}
.cv-person .cv-head{fill:var(--fg)}.cv-person .cv-body{fill:var(--ray-sub)}.cv-person .cv-legs{stroke:var(--fg);stroke-width:5;stroke-linecap:round;fill:none}
.cv-motion{stroke:var(--ray-sub);stroke-width:1.6;fill:none;stroke-linecap:round}
.cv-cone{stroke:none}.cv-cone-sub{fill:color-mix(in srgb,var(--ray-sub) 17%,transparent)}.cv-cone-bg{fill:color-mix(in srgb,var(--ray-bg) 12%,transparent)}.cv-cone-near{fill:color-mix(in srgb,var(--ray-near) 11%,transparent)}
.cv-rays{fill:none;stroke-width:1.6;stroke-dasharray:7 5;animation:flow 1.1s linear infinite}
.cv-rays-sub{stroke:var(--ray-sub)}.cv-rays-bg{stroke:var(--ray-bg);stroke-width:1.2;opacity:.85}.cv-rays-near{stroke:var(--ray-near);stroke-width:1.3;stroke-dasharray:3 4;opacity:.9}
.cv-chief{fill:none;stroke:var(--ray-sub);stroke-width:.9;opacity:.5}
.cv-past{fill:none;stroke:var(--ray-sub);stroke-width:1;stroke-dasharray:2 3;opacity:.75}
.cv-img-dot{fill:var(--ray-sub)}.cv-img-dot-bg{fill:var(--ray-bg)}.cv-img-dot-near{fill:var(--ray-near)}
.cv-disc{stroke-width:3;stroke-linecap:butt}.cv-disc-bg{stroke:var(--ray-bg)}.cv-disc-near{stroke:var(--ray-near)}
.cv-barrel{fill:var(--metal);stroke:var(--metal-edge);stroke-width:1.2;opacity:.55;transition:d .25s}
.cv-body-shell{fill:var(--metal);stroke:var(--metal-edge);stroke-width:1.2;opacity:.75}
.cv-mount{fill:var(--metal-edge)}
.cv-element{fill:color-mix(in srgb,var(--glass) 30%,transparent);stroke:var(--glass);stroke-width:1.4}
.cv-blade{fill:var(--fg);opacity:.85}
.cv-sensor{fill:#44c49d;stroke:#2c8f71}
.cv-shutter{fill:var(--fg);opacity:.9;transform:translateY(-130px)}
.firing .cv-shutter{animation:curtain .7s ease-in-out}
.cv-coc{fill:none;stroke:var(--fg);stroke-width:1.2}.cv-coc-label{fill:var(--fg);font-size:10.5px}
.paused .cv-rays{animation-play-state:paused}
@keyframes flow{to{stroke-dashoffset:-24}}
@keyframes curtain{0%{transform:translateY(-130px)}40%,55%{transform:translateY(0)}100%{transform:translateY(130px)}}

.insets{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:10px}
.inset{display:flex;align-items:center;gap:12px;padding:9px 12px;border:1px solid var(--line);border-radius:11px;background:var(--bg);min-width:0}
.inset svg{width:58px;height:58px;flex:0 0 58px}
.inset span{display:block;font:9px var(--mono);letter-spacing:.1em;color:var(--muted)}
.inset strong{display:block;font:500 17px var(--mono);margin-top:1px}
.inset em{display:block;font-style:normal;font-size:11px;color:var(--muted);line-height:1.4}
.iris-rim{fill:var(--metal);stroke:var(--metal-edge)}
.iris-blades{fill:color-mix(in srgb,var(--fg) 78%,var(--bg));transition:d .2s}
.iris-edges{stroke:var(--bg);stroke-width:1.1;fill:none;opacity:.55}
.iris-ring{fill:none;stroke:var(--metal-edge);stroke-width:4}
.cu-bg{fill:var(--stage)}.cu-grid{stroke:var(--stage-line);stroke-width:.6}
.cu-disc{fill:color-mix(in srgb,var(--ray-sub) 40%,transparent);stroke:var(--ray-sub);stroke-width:1}
.cu-limit{fill:none;stroke:var(--good);stroke-width:1.4}.cu-over{fill:none;stroke:var(--ray-sub);stroke-width:2;stroke-dasharray:3 3}
.panel-note{font-size:11px;color:var(--muted);margin-top:10px;line-height:1.6}

/* 3D stage */
.stage3d{position:relative;height:clamp(400px,40vw,580px);border-radius:12px;overflow:hidden;border:1px solid var(--stage-line);
  background:radial-gradient(ellipse at 50% 35%,#26313c 0%,#141b22 55%,#0b1015 100%);touch-action:none}
:root[data-theme=light] .stage3d{background:radial-gradient(ellipse at 50% 35%,#ffffff 0%,#ece8e1 60%,#ddd7ce 100%)}
.stage3d.failed{height:auto;background:var(--stage)}
.c3-host{position:absolute;inset:0}
.c3-canvas{display:block;outline:none;cursor:grab}.c3-canvas:active{cursor:grabbing}
.c3-canvas:focus-visible{outline:2px solid var(--app-accent);outline-offset:-3px}
.c3-labels{position:absolute;inset:0;pointer-events:none;overflow:hidden}
.c3-label{position:absolute;left:0;top:0;pointer-events:auto;min-height:0;padding:3px 8px;margin:-11px 0 0 -4px;font:500 10px var(--mono);letter-spacing:.04em;border-radius:20px;
  background:color-mix(in srgb,var(--panel) 82%,transparent);border:1px solid var(--line);color:var(--fg);white-space:nowrap;backdrop-filter:blur(4px);box-shadow:0 2px 10px #0004}
.c3-label:before{content:'';position:absolute;left:-1px;top:50%;width:5px;height:5px;margin:-2.5px 0 0 -3px;border-radius:50%;background:var(--app-accent)}
.c3-label.on{border-color:var(--app-accent);color:var(--accent-text)}
.c3-status{position:absolute;left:12px;top:12px;font:500 11px var(--mono);letter-spacing:.04em;padding:6px 11px;border-radius:20px;background:color-mix(in srgb,var(--panel) 85%,transparent);border:1px solid var(--app-accent);color:var(--accent-text);opacity:0;transition:opacity .2s;pointer-events:none;max-width:calc(100% - 24px)}
.c3-status.on{opacity:1}
.c3-hint{position:absolute;right:12px;bottom:10px;font:10px var(--mono);color:var(--muted);pointer-events:none}
.c3-hint.dim{opacity:0}
.c3-fallback{padding:16px;color:var(--muted);font-size:13px}
.part-card{position:absolute;left:12px;bottom:12px;width:min(330px,calc(100% - 24px));padding:13px 15px 14px;border-radius:12px;background:color-mix(in srgb,var(--panel) 92%,transparent);border:1px solid var(--line);box-shadow:0 10px 30px #0006;backdrop-filter:blur(6px)}
.part-card .eyebrow{margin-bottom:4px}.part-card h3{font:620 19px/1.2 var(--display);letter-spacing:-.02em;margin-bottom:6px;padding-right:28px}
.part-card p:last-child{font-size:12.5px;line-height:1.6;color:var(--muted)}
.part-close{position:absolute;right:8px;top:8px;min-height:30px;width:30px;padding:0;font-size:17px;border-radius:8px;background:transparent}
.stage-tools{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-top:10px}
.explode{display:flex;align-items:center;gap:10px;flex:1 1 220px;min-width:0}
.explode label{font-size:12px;font-weight:600;color:var(--fg);white-space:nowrap}
.explode input{flex:1;min-width:80px}
.tool-buttons{display:flex;gap:6px}.tool-buttons button{min-height:36px;font-size:11.5px;padding:6px 11px}
.part-pick select{min-height:36px;font-size:13px;padding:6px 10px;width:auto;max-width:190px}
.diagram-tools{display:inline-flex;margin-bottom:10px}

/* viewfinder */
.vf-frame{position:relative;background:#050709;border-radius:12px;padding:10px;border:1px solid #1b232b}
#viewfinder{display:block;width:100%;height:auto;aspect-ratio:3/2;border-radius:4px;background:#000}
.vf-flash{position:absolute;inset:10px;background:#000;opacity:0;pointer-events:none;border-radius:4px}
.vf-flash.go{animation:blackout .45s ease-out}
@keyframes blackout{0%{opacity:0}15%{opacity:1}45%{opacity:1}100%{opacity:0}}
.vf-lcd{display:flex;align-items:center;gap:14px;flex-wrap:wrap;background:#050709;color:#e9f6ee;border:1px solid #1b232b;border-top:0;border-radius:0 0 12px 12px;margin-top:-8px;padding:12px 16px 10px;font:500 13px var(--mono)}
.vf-lcd>span{white-space:nowrap}
.meter-scale{position:relative;flex:1 1 150px;min-width:140px;height:26px}
.meter-ticks{display:flex;justify-content:space-between;font:9px var(--mono);color:#93a39a;padding-top:12px;border-top:1px solid #45514a}
.meter-ticks b{font-weight:400;width:0;display:flex;justify-content:center;position:relative}
.meter-ticks b:before{content:'';position:absolute;top:-12px;width:1px;height:6px;background:#7f8d85}
#meterNeedle{position:absolute;top:-7px;width:2px;height:13px;margin-left:-1px;background:#ffb25b;box-shadow:0 0 8px #ffb25b;transition:left .2s}
#meterNeedle.off-scale{background:#ff6b4a;box-shadow:0 0 8px #ff6b4a}
.af{color:#7dffb0}.af.miss{color:#ff8a6b}
.histogram{margin-top:12px;padding:10px 12px;border:1px solid var(--line);border-radius:11px;background:var(--bg)}
.hist-head,.hist-scale{display:flex;justify-content:space-between;font:9px var(--mono);letter-spacing:.08em;color:var(--muted)}
#histNote.warn{color:var(--bad)}
#histogram{display:block;width:100%;height:58px;margin:6px 0 4px;--hist-bar:#ff8a1f;--hist-grid:#24303a;--hist-warn:#ff6b4a}
:root[data-theme=light] #histogram{--hist-bar:#e56f00;--hist-grid:#e6e0d7;--hist-warn:#b8321f}
.contact{margin-top:12px}.contact>span{display:block;font:9px var(--mono);letter-spacing:.08em;color:var(--muted);margin-bottom:6px}
.contact-strip{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px}
.shot{padding:4px;min-height:0;display:block;text-align:left;border-radius:8px;background:var(--bg)}
.shot img{display:block;width:100%;aspect-ratio:3/2;border-radius:4px}
.shot span{display:block;font:9px var(--mono);color:var(--muted);margin-top:4px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

/* controls */
.controls{display:grid;grid-template-columns:1.05fr 1.35fr .9fr;background:var(--panel)}
.group{border:0;margin:0;padding:16px 20px 20px;border-right:1px solid var(--line);min-width:0;display:grid;gap:14px;align-content:start}
.group:last-child{border-right:0}
.group legend{float:left;width:100%;font:10px var(--mono);letter-spacing:.11em;text-transform:uppercase;color:var(--muted);padding:0;margin-bottom:2px}
.group legend span{color:var(--accent-text);margin-right:6px}
.controls .group:nth-child(2){grid-template-columns:1fr 1fr;column-gap:22px}
.controls .group:nth-child(2) legend{grid-column:1/-1}
.control{min-width:0}
.control-head{display:flex;justify-content:space-between;align-items:baseline;gap:10px}
.control-head label{color:var(--fg);font-size:13px;font-weight:600}
.control select{min-height:40px;font-size:14px;margin-top:4px;padding:7px 10px}
.chips{display:flex;gap:5px;flex-wrap:wrap;margin-top:2px}
.chips button{min-height:32px;padding:4px 10px;font:500 11px var(--mono);border-radius:7px}
.chips button:disabled{opacity:1;color:var(--good);border-color:color-mix(in srgb,var(--good) 40%,var(--line));background:transparent;cursor:default}
.scale{display:flex;justify-content:space-between;font:9px var(--mono);color:var(--soft);margin-top:-2px}
.hint{font-size:11.5px;color:var(--muted);margin-top:5px;line-height:1.5}
.stop-sum{border:1px dashed var(--line);border-radius:10px;padding:11px 13px}
.stop-sum span{display:block;font:9px var(--mono);letter-spacing:.08em;color:var(--accent-text);margin-bottom:5px}
.stop-sum p{font-size:12px;color:var(--muted);line-height:1.6}

/* learn */
.learn{display:grid;grid-template-columns:1.15fr 1fr;gap:16px;margin-top:18px}
.learn-panel{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:20px 22px;min-width:0}
.learn-panel h2{font:620 26px/1.1 var(--display);letter-spacing:-.03em;margin-bottom:12px}
.happening p{font-size:14px;line-height:1.7;color:var(--muted);padding:9px 0;border-top:1px solid var(--line);display:grid;grid-template-columns:84px minmax(0,1fr);gap:12px}
.happening p:first-child{border-top:0}
.happening p .k{font:9px/2.3 var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--accent-text)}
.happening b{color:var(--fg);font-weight:600}
.challenges{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.challenges li{border:1px solid var(--line);border-radius:11px;padding:12px 14px;background:var(--bg);transition:border-color .2s}
.challenges li.now{border-color:var(--good)}
.ch-head{display:flex;align-items:center;gap:10px}
.ch-mark{width:18px;height:18px;flex:0 0 18px;border-radius:50%;border:1.5px solid var(--soft);display:grid;place-items:center}
.done .ch-mark{background:var(--good);border-color:var(--good)}
.done .ch-mark:after{content:'';width:8px;height:4px;border:2px solid var(--bg);border-top:0;border-right:0;transform:rotate(-45deg) translate(1px,-1px)}
.challenges strong{font-size:14px}
.challenges p{font-size:12.5px;color:var(--muted);margin:5px 0 0 28px;line-height:1.55}
.challenges .ch-progress{font:11px var(--mono);color:var(--soft)}.now .ch-progress{color:var(--good)}
.challenges details{margin:6px 0 0 28px}.challenges summary{font-size:12px;cursor:pointer;color:var(--accent-text);min-height:28px;display:inline-flex;align-items:center}
.challenges details p{margin-left:0}

/* notes */
.notes{margin-top:16px;display:grid;gap:8px}
.notes details{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:0 20px}
.notes summary{cursor:pointer;min-height:52px;display:flex;align-items:center;font-weight:600;font-size:14px;list-style:none}
.notes summary::-webkit-details-marker{display:none}
.notes summary:after{content:'+';margin-left:auto;font:18px var(--mono);color:var(--accent-text)}
.notes details[open] summary:after{content:'−'}
.notes-body{padding:0 0 18px;max-width:900px}
.notes-body p,.notes-body li{font-size:13.5px;color:var(--muted);line-height:1.75;margin-bottom:10px}
.notes-body ul{padding-left:18px;margin:0}
.notes-body code{font:12.5px var(--mono);color:var(--accent-text)}
.notes-body b{color:var(--fg)}
.notes-body a{color:var(--fg)}
.noscript{padding:20px;color:var(--muted)}
.app-footer{margin-top:26px}

@media(max-width:1280px){
  .question-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
  .meter-strip{grid-template-columns:repeat(3,minmax(0,1fr))}
  .readout:nth-child(3){border-right:0}.readout:nth-child(-n+3){border-bottom:1px solid var(--line)}
  .controls{grid-template-columns:1fr 1fr}
  .controls .group:nth-child(2){border-right:0}
  .controls .group:nth-child(3){grid-column:1/-1;border-top:1px solid var(--line);grid-template-columns:1fr 1fr;column-gap:22px}
  .controls .group:nth-child(3) legend{grid-column:1/-1}
}
@media(max-width:1020px){
  .visuals{grid-template-columns:minmax(0,1fr)}
  .cutaway-panel{border-right:0;border-bottom:1px solid var(--line)}
  .learn{grid-template-columns:minmax(0,1fr)}
}
@media(max-width:760px){
  .app-header{padding-inline:16px;min-height:62px}
  .app-header strong span{display:none}
  .app-main{padding:26px 14px 24px}
  .intro{flex-direction:column;align-items:flex-start;gap:16px;padding-bottom:22px}
  .intro-glyph{width:56px;height:56px;flex-basis:56px}
  .intro-note{gap:14px}.intro-note p{font-size:13px}
  .question-grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:8px}
  .bench-toolbar>.tabs{display:none}.bench-actions{width:100%}.bench-actions button{flex:1}
  .panel-head .legend{display:none!important}
  .insets{grid-template-columns:minmax(0,1fr) minmax(0,1fr)!important;gap:8px}.inset{gap:8px;padding:8px}.inset svg{width:38px;height:38px;flex-basis:38px}.inset strong{font-size:14px}.inset em{font-size:10px}
  .stage3d{height:360px}.c3-hint{display:none}
  .question-grid button{padding:12px}.question-grid strong{font-size:13.5px}
  .section-label span:last-child{display:none}
  .meter-strip{grid-template-columns:repeat(2,minmax(0,1fr))}
  .readout{padding:10px 13px;border-bottom:1px solid var(--line)}
  .readout:nth-child(3){border-right:1px solid var(--line)}
  .readout:nth-child(2n){border-right:0}.readout:nth-child(n+5){border-bottom:0}
  .readout strong{font-size:18px}
  .panel{padding:14px 12px 14px}
  .panel-head h2{font-size:21px}
  .legend{gap:10px;font-size:10px}
  .cv-label,.cv-focus-label,.cv-coc-label{font-size:15px}.cv-tick{font-size:13px}.cv-dof-label{font-size:13px}.cv-tick-note{display:none}
  .insets{grid-template-columns:minmax(0,1fr)}
  .cv-minor,.cv-tick.minor{display:none}.cv-label,.cv-focus-label,.cv-coc-label{font-size:19px}.cv-tick{font-size:16px}.cv-dof-label{font-size:16px}
  .visual-switch{display:flex!important;margin:12px 12px 0}.visual-switch button{flex:1}
  .visuals[data-view=viewfinder] .cutaway-panel,.visuals:not([data-view=viewfinder]) .viewfinder-panel{display:none}
  .cutaway-panel{border-bottom:0}
  .vf-frame{padding:6px}.vf-flash{inset:6px}
  .vf-lcd{gap:10px;padding:10px 12px;font-size:12px}
  .meter-scale{flex-basis:100%;order:5}
  .controls,.controls .group:nth-child(2),.controls .group:nth-child(3){grid-template-columns:minmax(0,1fr)}
  .group{border-right:0;border-top:1px solid var(--line);padding:16px 14px 18px}
  .controls .group:first-child{border-top:0}
  .learn-panel{padding:17px 15px}
  .happening p{grid-template-columns:minmax(0,1fr);gap:2px;font-size:13.5px}
  .challenges p,.challenges details{margin-left:0}
  .notes details{padding:0 15px}
  .contact-strip{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media(max-width:420px){
  .question-grid small{display:none}.question-grid strong{font-size:13px}.question-grid span{margin-bottom:6px}
  .bench-toolbar{padding:10px 12px}
}
@media(prefers-reduced-motion:reduce){.cv-rays{animation:none}.cv-dof,.cv-barrel,.iris-blades,#meterNeedle{transition:none}}

/* ---------- relayout (2026-10): controls sit around the viewing windows ---------- */
.bench{overflow:clip}
.dock{min-width:0}
/* desktop: 3D camera | viewfinder | settings column, all on one screen */
@media(min-width:1100px){
  .visuals{grid-template-columns:minmax(0,1.14fr) minmax(0,1fr) minmax(380px,.82fr);align-items:stretch}
  .panel{padding:12px 14px 14px}
  .panel-head{margin-bottom:8px}.panel-head h2{font-size:19px}.panel-head .eyebrow{margin-bottom:4px}
  .legend{font-size:10.5px;gap:10px}
  .viewfinder-panel{border-right:1px solid var(--line)}
  .dock{position:relative}
  .stage3d{height:clamp(320px,calc(100vh - 500px),540px)}
  .stage-tools{margin-top:8px;gap:8px;flex-wrap:nowrap}.explode{flex:1 1 150px;gap:8px}.explode label{font-size:11.5px}
  .tool-buttons button{padding:6px 9px;font-size:11px}
  /* the part picker floats on the 3D stage's top-right edge */
  .part-pick{position:absolute;top:10px;right:10px;z-index:2}.part-pick select{min-height:32px;font-size:12px;padding:4px 8px;max-width:170px;background:color-mix(in srgb,var(--panel) 88%,transparent)}
  .insets{margin-top:8px;gap:8px}.inset{padding:7px 10px;gap:10px}.inset svg{width:46px;height:46px;flex-basis:46px}.inset strong{font-size:15px}
  .vf-lcd{gap:10px;padding:10px 12px 8px;font-size:12px}.meter-scale{min-width:120px}
  .histogram{margin-top:8px;padding:8px 10px}#histogram{height:44px;margin:4px 0 3px}
  .contact{margin-top:8px}.contact-strip{grid-template-columns:repeat(4,minmax(0,1fr));gap:6px}
  .meter-strip .readout{padding:9px 16px 10px}.readout strong{font-size:19px;line-height:1.3}.readout[data-tone]:before{top:12px}
  /* settings column: two narrow sub-columns right beside the viewfinder */
  .controls{grid-template-columns:minmax(0,1fr) minmax(0,1fr);grid-template-rows:auto 1fr;align-content:start;background:color-mix(in srgb,var(--bg) 35%,var(--panel))}
  .controls .group{padding:12px 14px 14px;gap:9px;border-right:0;border-top:0}
  .controls .group:nth-child(1){grid-column:1;grid-row:1;border-right:1px solid var(--line)}
  .controls .group:nth-child(2){grid-column:2;grid-row:1/span 2;grid-template-columns:minmax(0,1fr)}
  .controls .group:nth-child(3){grid-column:1;grid-row:2;border-right:1px solid var(--line);border-top:1px solid var(--line);grid-template-columns:minmax(0,1fr)}
  .controls .group legend{margin-bottom:0}
  .control-head label{font-size:12.5px}output{font-size:12px}
  .controls .control{display:flex;flex-direction:column}
  .controls input[type=range]{display:block;height:28px;min-height:28px;margin:0}
  .controls .chips{gap:4px;margin-top:0}.controls .chips button{min-height:30px;padding:3px 7px;font-size:10.5px}
  .controls .chips[aria-label] button{flex:1 1 0;min-width:0;padding:3px 0}
  .controls .hint{font-size:11px;margin-top:3px;line-height:1.45}
  .controls .scale{gap:6px;font-size:8.5px;margin-top:0}.controls .scale span:last-child{text-align:right}
  .control select{min-height:36px;font-size:13px}
  .stop-sum{padding:9px 11px}.stop-sum p{font-size:11.5px;line-height:1.5}
}
/* short desktop screens: slimmer question cards so cards, readouts, views and settings fit together */
@media(min-width:1100px) and (max-height:1050px){
  .intro{padding-bottom:22px}
  .question-grid{margin-bottom:14px;gap:8px}.question-grid button{padding:10px 13px 11px}.question-grid span{margin-bottom:5px}
  .question-grid strong{font-size:13.5px}.question-grid small{display:none}
  .bench-toolbar{padding:8px 14px}.bench-actions button,.tabs button{min-height:36px}
}
/* mid widths: views side by side, settings as a bar right under them */
@media(min-width:761px) and (max-width:1099px){
  .visuals{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
  .controls{grid-column:1/-1;border-top:1px solid var(--line)}
  .cutaway-panel{border-right:1px solid var(--line);border-bottom:0}
  .stage3d{height:340px}
}
/* phones: the chosen view stays pinned at the top while the settings scroll under it */
@media(max-width:760px){
  .visuals{display:flex;flex-direction:column}
  .cutaway-panel,.viewfinder-panel{display:contents}
  .visual-switch{position:sticky;top:8px;z-index:6;margin:12px 12px 0;box-shadow:0 0 0 8px var(--panel)}
  .panel-head{margin:12px 12px 8px}
  .dock{position:sticky;top:62px;z-index:5;background:var(--panel);padding:8px 12px 10px;border-bottom:1px solid var(--line);box-shadow:0 8px 14px -8px #0005}
  .stage3d{height:min(230px,30vh)}
  .stage-tools{margin-top:8px;gap:6px 8px}.explode{flex:1 1 100%}.tool-buttons button,.part-pick select{min-height:36px}
  .part-pick{flex:1}.part-pick select{width:100%;max-width:none}
  .tool-buttons button{padding:5px 9px;font-size:11px}
  .part-card{padding:10px 12px}.part-card p:last-child{font-size:11.5px;line-height:1.5}.part-card h3{font-size:16px}
  .diagram-tools{margin-bottom:6px}.panel-note{display:none}
  .vf-frame{max-width:min(100%,calc((30vh + 20px) * 1.5));margin:0 auto}
  .vf-lcd{max-width:min(100%,calc((30vh + 20px) * 1.5));margin:-8px auto 0}
  .insets{margin:10px 12px 0}
  .histogram,.contact{margin:12px 12px 0}
  .controls{margin-top:12px;border-top:1px solid var(--line)}
}