.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.mini{font:600 12px/1 ui-monospace,Menlo,Consolas,monospace;letter-spacing:.06em;text-transform:uppercase;background:transparent;color:var(--ink);border:2px dashed var(--ink);border-radius:999px;padding:9px 12px;min-height:40px;cursor:pointer}
.mini[aria-pressed=true]{background:var(--ink);color:var(--paper);border-style:solid}
h2{font-size:clamp(30px,5vw,48px);line-height:1.05;letter-spacing:-.02em;margin:0 0 .4em}
h3{margin:.2em 0 .4em;line-height:1.2}
.lab{max-width:1320px;margin:0 auto;padding:40px 16px}
.labhead p{max-width:44em;color:var(--ink2);margin-top:0}
.labgrid{display:grid;grid-template-columns:1fr;gap:18px}
@media (min-width:1080px){.labgrid{grid-template-columns:minmax(0,1fr) 340px}}
.stagewrap{min-width:0}
.stage{position:relative;border:2px solid var(--ink);border-radius:14px;background:#fbf7ee;overflow:hidden;aspect-ratio:16/10;box-shadow:6px 6px 0 var(--ink);transition:transform .6s cubic-bezier(.2,.8,.2,1)}
#stagewrap{perspective:1200px}
.stage.tilt{transform:rotateX(24deg) scale(.94);transform-origin:50% 80%;box-shadow:0 40px 50px -20px rgba(27,35,64,.45)}
#sim{display:block;width:100%;height:100%;touch-action:none;cursor:grab}
#sim.grabbing{cursor:grabbing}
.canvas-fallback{position:absolute;inset:0;display:grid;place-items:center;padding:24px;text-align:center;margin:0}
.js-ready .canvas-fallback{display:none}
.hud{position:absolute;left:10px;top:8px;display:flex;flex-wrap:wrap;gap:4px 12px;font:600 11px/1.3 ui-monospace,Menlo,Consolas,monospace;color:var(--ink2);pointer-events:none}
.banner{position:absolute;left:50%;top:14%;transform:translateX(-50%);background:var(--ink);color:var(--paper);padding:10px 18px;border-radius:999px;font:700 14px/1.3 ui-monospace,Menlo,Consolas,monospace;text-align:center;max-width:90%;animation:pop .5s cubic-bezier(.3,1.6,.5,1)}
@keyframes pop{from{transform:translateX(-50%) scale(.4);opacity:0}}
.transport{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.transport .btn{padding:10px 14px}
.btn.small{min-height:40px;font-size:12px}
.btn[aria-pressed=true]{background:var(--org);border-color:var(--org);color:#fff}
.panel{display:grid;gap:14px;align-content:start}
fieldset{border:2px solid var(--ink);border-radius:12px;padding:12px 14px 14px;margin:0;background:rgba(251,247,238,.92)}
legend{font:700 12px/1 ui-monospace,Menlo,Consolas,monospace;letter-spacing:.1em;text-transform:uppercase;padding:0 6px;background:var(--paper);color:var(--org)}
fieldset label{display:flex;justify-content:space-between;gap:8px;font-weight:700;font-size:15px;margin-top:8px}
output{font:600 13px ui-monospace,Menlo,Consolas,monospace;color:var(--teal)}
input[type=range]{width:100%;accent-color:var(--org);min-height:32px}
select{width:100%;font:inherit;font-size:15px;padding:8px;border:2px solid var(--ink);border-radius:8px;background:#fff;color:var(--ink);min-height:44px}
.hint{font-size:13.5px;color:var(--ink2);margin:2px 0 6px;line-height:1.45}
label.check{justify-content:flex-start;align-items:center;gap:10px;min-height:32px}
label.check input{width:20px;height:20px;accent-color:var(--org)}
.goal{font-size:14px;background:var(--ink);color:var(--paper);border-radius:8px;padding:8px 10px;margin-top:6px}
.goal:empty{display:none}
.snaps{display:grid;grid-template-columns:repeat(3,1fr);gap:6px}
.snap{display:grid;gap:4px}
.snap span{font:600 11px ui-monospace,Menlo,Consolas,monospace;text-align:center;color:var(--ink2)}
.snap button{font:700 12px ui-monospace,Menlo,Consolas,monospace;min-height:40px;border:2px solid var(--ink);border-radius:8px;background:#fff;color:var(--ink);cursor:pointer}
.snap button:disabled{opacity:.45;cursor:not-allowed}
.compare{margin-top:24px;border:2px solid var(--ink);border-radius:12px;padding:14px 16px;background:rgba(251,247,238,.95)}
.cgrid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:4px 18px}
.cgrid label{display:block;font-weight:700;font-size:15px}
.cgrid output{float:right}
.tablewrap{overflow-x:auto;margin-top:12px}
table{border-collapse:collapse;width:100%;font:13px/1.4 ui-monospace,Menlo,Consolas,monospace;min-width:520px}
caption{text-align:left;font-weight:700;padding-bottom:6px}
th,td{border-bottom:1px solid var(--line);padding:6px;text-align:left}
.prose{max-width:1200px;margin:0 auto;padding:48px 16px}
.prose>p{max-width:46em}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px}
.cards article,.world{border:2px solid var(--ink);border-radius:12px;padding:16px;background:rgba(251,247,238,.95)}
.cards article p{margin:.3em 0;font-size:16px}
.cc{position:relative;background:#fff!important}
.cc::after{content:"";position:absolute;inset:auto -2px -10px 14px;height:10px;border:2px solid var(--ink);border-top:0;border-radius:0 0 10px 10px;background:var(--paper2);z-index:-1}
.tag{font:700 11px/1 ui-monospace,Menlo,Consolas,monospace;letter-spacing:.12em;text-transform:uppercase;color:var(--org);margin:0}
.ticks{max-width:52em;padding-left:1.2em}
.ticks li{margin:.5em 0}
kbd{font:600 13px ui-monospace,Menlo,Consolas,monospace;border:1.5px solid var(--ink);border-bottom-width:3px;border-radius:5px;padding:0 5px;background:#fff}
.guide{max-width:1200px;margin:24px auto;padding:32px 16px;display:grid;gap:28px;align-items:center}
@media (min-width:760px){.guide{grid-template-columns:260px 1fr}}
.guidecover{aspect-ratio:1/1.414;background:var(--ink);color:var(--paper);border-radius:6px;padding:22px;display:flex;flex-direction:column;justify-content:flex-end;box-shadow:10px 10px 0 var(--org);transform:rotate(-3deg);max-width:240px;background-image:radial-gradient(circle at 70% 30%,var(--org) 0 18px,transparent 19px),radial-gradient(circle at 70% 30%,transparent 0 48px,rgba(243,236,221,.4) 49px 50px,transparent 51px)}
.guidecover span{font-size:14px}.guidecover b{font-size:28px;line-height:1}.guidecover i{font-size:12px;margin-top:10px;opacity:.8}
.small{font-size:14px;color:var(--ink2)}
.world{display:block;color:var(--ink);text-decoration:none;transition:transform .25s,box-shadow .25s}
.world:hover,.world:focus-visible{transform:translate(-3px,-3px);box-shadow:6px 6px 0 var(--teal)}
.world p{font-size:16px}
.go{font:700 13px ui-monospace,Menlo,Consolas,monospace;color:var(--teal)}
.foot{max-width:1200px;margin:0 auto;padding:32px 16px 56px;border-top:2px solid var(--ink);display:flex;flex-wrap:wrap;gap:16px;align-items:center;justify-content:space-between;font-size:15px}
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s,transform .7s}
.reveal.in{opacity:1;transform:none}
html.simple .reveal{opacity:1;transform:none}
html.simple body{font-size:19px}
html.simple .btn{min-height:52px;font-size:16px}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none}.stage.tilt{transition:none}}