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@media(min-width:1450px){.wh-lab .wh-stage svg{min-height:420px}}
@media(max-width:1050px){.wh-body{grid-template-columns:minmax(0,1fr)}.wh-side{border-left:0;border-top:1px solid var(--line);display:grid;grid-template-columns:1fr 1fr}.wh-inspector{grid-column:1/-1}.wh-phase-list{grid-template-columns:1fr 1fr;align-content:start}.wh-explain{min-height:155px}.wh-journey{margin:20px;max-width:none}}
@media(max-width:650px){.wh-head{padding:21px 17px;display:block}.wh-stamp{display:inline-flex;margin-top:14px}.wh-toolbar{padding:12px;gap:6px}.wh-button{padding:8px 10px;font-size:.77rem!important}.wh-toolbar .wh-reset{margin-left:0}.wh-control-rack{padding:12px;gap:9px}.wh-control{min-width:125px}.wh-stage svg{min-height:0;aspect-ratio:800/560}.wh-stage text{font-size:19px}.wh-stage text.wh-svg-small{font-size:14px}.wh-stage text.wh-svg-title{font-size:14px}.wh-stat{padding:10px}.wh-stat strong{font-size:.96rem}.wh-stat span{font-size:.65rem}.wh-side{padding:13px;display:block}.wh-explain{min-height:130px}.wh-phase-list{margin:12px 0;grid-template-columns:1fr 1fr}.wh-missions{padding:18px 13px}.wh-mission-grid{grid-template-columns:1fr}.wh-mission-heading{align-items:start;flex-direction:column;gap:3px}.wh-foot{padding:12px 15px}.wh-lab{border-radius:18px}.wh-journey{grid-template-columns:1fr;padding:21px;margin:18px 12px}.wh-journey-links{grid-template-columns:repeat(3,minmax(0,1fr))}.wh-journey-links a{padding:8px 4px}.site-header{gap:10px;padding:9px 12px}.site-header nav{gap:10px;font-size:.78rem;flex-wrap:wrap}.site-header .brand{font-size:1.2rem}.site-header .search{max-width:150px}.wh-control-toggle{font-size:.77rem}}
@media(prefers-reduced-motion:reduce){.wh-lab *, .wh-lab *:before,.wh-lab *:after{animation:none!important;transition:none!important}.wh-journey *{transition:none!important}html{scroll-behavior:auto}}
.wh-stage.wh-zoom{overflow-x:auto;overscroll-behavior-x:contain}.wh-stage.wh-zoom svg{width:1200px;max-width:none;max-height:none;min-width:1200px;aspect-ratio:800/500}.wh-stage.wh-zoom:before{content:'Zoomed view — scroll sideways to explore. Use Fit diagram to return.';display:block;position:sticky;left:0;font-size:12px;padding:8px 13px;color:#3b647a;background:#edf8fc;z-index:2}

/* v5.8.21: Rocket-only, one-click-per-stage walkthrough. */
.wh-lab[data-play-lab="rocket"] .wh-rocket-step-help{display:flex;flex-wrap:wrap;gap:4px 12px;align-items:baseline;padding:12px 24px;background:#f3f8fb;border-bottom:1px solid #cfdfeb;font-size:.8rem;color:#48677b}
.wh-lab[data-play-lab="rocket"] .wh-rocket-step-help strong{color:#175d77;font-size:.86rem}
.wh-lab[data-play-lab="rocket"].wh-rocket-walkthrough .wh-rocket-step-help{background:#eaf6f8}
.wh-lab[data-play-lab="rocket"].wh-rocket-walkthrough [data-action="step"]{background:#096c87;color:#fff;border-color:#096c87}
.wh-lab[data-play-lab="rocket"] .wh-stat strong{overflow-wrap:anywhere}
@media(max-width:650px){.wh-lab[data-play-lab="rocket"] .wh-rocket-step-help{display:grid;padding:11px 13px;gap:4px}.wh-lab[data-play-lab="rocket"] .wh-rocket-step-help span{line-height:1.5}}

/* v5.8.32: step-first walkthroughs and explicit wing side view. */
.ss-teaching-help{padding:13px 24px;display:grid;gap:4px;background:#f2f8f7;border-bottom:1px solid #d6e5e5;color:#385a60}
.ss-teaching-help strong{font-size:14px;color:#144f58;line-height:1.5}
.ss-teaching-help span{font-size:12px;line-height:1.6;max-width:900px}
.wh-lab.ss-teaching-mode .wh-toolbar [data-action="step"]{background:#126d76;border-color:#126d76;color:white}
.wh-lab .ss-teaching-look{border-top:1px solid #d9e7e9;padding-top:11px;margin-top:12px!important;font-size:13px!important;color:#15545e!important;font-weight:700;line-height:1.55}
.wh-lab .ss-teaching-focus{fill:none;stroke:#cf951f;stroke-width:3;vector-effect:non-scaling-stroke;pointer-events:none}
.wh-lab.ss-teaching-mode .wh-phase.active{outline:2px solid #16818a;outline-offset:1px;background:#e4f5f4}
.wh-lab.ss-teaching-mode .wh-control-rack:after{content:'Paused example • Run full simulation to try your own settings';font-size:12px;line-height:1.5;flex-basis:100%;color:#517379}
.wh-lab.ss-teaching-mode [data-input]{opacity:.7;cursor:not-allowed}
.wh-lab.ss-teaching-mode .wh-wing-drag{cursor:default}
.wh-lab[data-play-lab="airplane"] .ss-air-heading{font-size:21px!important;font-weight:800!important;letter-spacing:-.3px;fill:#185763}
.wh-lab[data-play-lab="airplane"] .ss-air-subtitle{font-size:14px!important;fill:#517181;font-weight:500}
.wh-lab[data-play-lab="airplane"] .ss-air-label{font-size:15px!important;fill:#365e70;font-weight:650}
.wh-lab[data-play-lab="airplane"] .ss-air-force{font-size:16px!important;font-weight:800;fill:#1b6477}
.wh-lab[data-play-lab="airplane"] .wh-stage text.wh-svg-small{font-size:12px!important}
@media(max-width:650px){
 .ss-teaching-help{padding:12px 14px}
 .ss-teaching-help strong{font-size:13px}.ss-teaching-help span{font-size:12px}
 .wh-lab .ss-teaching-look{font-size:13px!important}
 .wh-lab .ss-teaching-focus{stroke-width:2}
}


/* v5.8.33 streamlined lab view */
.wh-head,.wh-stats,.wh-legend,.wh-hint-line,.wh-inspector,.wh-missions,.wh-foot,.wh-storage,.ss-teaching-help,.wh-rocket-step-help{display:none!important}
.wh-lab{box-shadow:none;border-radius:20px;background:#fff}
.wh-toolbar{padding:12px 16px;gap:8px}
.wh-toolbar .wh-reset{margin-left:0}
.wh-body{grid-template-columns:minmax(0,1fr) 280px;background:#fff}
.wh-center{display:flex;flex-direction:column}
.wh-control-rack{padding:12px 16px;gap:10px;background:#fff;border-bottom:1px solid var(--line)}
.wh-control{min-width:150px}
.wh-stage{background:#f7fafc;border-bottom:0}
.wh-side{background:#fff;padding:16px;border-left:1px solid var(--line);gap:12px}
.wh-explain{padding:14px 14px 12px;min-height:120px;box-shadow:none}
.wh-explain h3{font-size:1rem}
.wh-explain p{font-size:.88rem;line-height:1.45}
.wh-status{display:none}
.wh-phase-list{gap:8px}
.wh-phase{padding:10px 10px;font-size:.82rem}
.wh-phase span{line-height:1.35}
@media(max-width:1050px){.wh-body{grid-template-columns:minmax(0,1fr)}.wh-side{border-left:0;border-top:1px solid var(--line);display:block}.wh-phase-list{grid-template-columns:1fr 1fr}}
@media(max-width:650px){.wh-toolbar{padding:12px;gap:6px}.wh-control-rack{padding:12px}.wh-side{padding:12px}.wh-explain{min-height:0}.wh-phase-list{grid-template-columns:1fr}}

/* v5.8.55: keep the solar lab focused on the core idea */
.wh-lab[data-play-lab="solar-panel"] [data-action="pause"],
.wh-lab[data-play-lab="solar-panel"] [data-action="slow"],
.wh-lab[data-play-lab="solar-panel"] [data-action="zoom"]{display:none!important}