.free-fall-page{width:min(1440px,100%);min-width:0;margin:0 auto;padding:0 32px 56px}.free-fall-page__header{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;padding:28px 0 24px}.free-fall-page__back{display:inline-flex;align-items:center;gap:6px;margin-bottom:20px;color:var(--md-sys-color-primary);font-size:13px;font-weight:500;text-decoration:none}.free-fall-page__back:hover{text-decoration:underline}.free-fall-page__back .material-symbols-outlined{font-size:18px}.free-fall-page__subject{margin:0 0 6px;color:var(--md-sys-color-primary);font-size:12px;font-weight:500}.free-fall-page h1{margin:0;color:var(--md-sys-color-on-surface);font-size:32px;line-height:40px;font-weight:400}.free-fall-page__description{margin:8px 0 0;color:var(--md-sys-color-on-surface-variant);font-size:14px;line-height:20px}.free-fall-workspace{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:20px;align-items:start}.free-fall-stage,.free-fall-panel{min-width:0;border:1px solid var(--md-sys-color-outline-variant);border-radius:12px;background:var(--md-sys-color-surface)}.free-fall-state{display:flex;flex-wrap:wrap;gap:10px 22px;padding:14px 18px;border-bottom:1px solid var(--md-sys-color-outline-variant);color:var(--md-sys-color-on-surface-variant);font-size:12px}.free-fall-state span{display:inline-flex;align-items:baseline;gap:6px}.free-fall-state strong{color:var(--md-sys-color-on-surface);font-weight:500;font-variant-numeric:tabular-nums}.free-fall-canvas-wrap{padding:14px 16px 4px;background:var(--md-sys-color-surface-container-low)}.free-fall-canvas{display:block;width:100%;height:auto;aspect-ratio:800 / 470}.free-fall-grid line{stroke:var(--md-sys-color-outline-variant);stroke-width:1}.free-fall-axis text{fill:var(--md-sys-color-on-surface-variant);font-family:"Roboto","Noto Sans TC",sans-serif;font-size:12px}.free-fall-track{stroke:var(--md-sys-color-outline);stroke-width:3;stroke-linecap:round}.free-fall-ground{stroke:var(--md-sys-color-on-surface);stroke-width:2}.free-fall-start-marker line{stroke:var(--md-sys-color-tertiary);stroke-width:1.5;stroke-dasharray:5 6}.free-fall-displacement{stroke:var(--md-sys-color-primary);stroke-width:2;stroke-dasharray:3 5;opacity:.7}.free-fall-start-marker text,.free-fall-vector-label,.free-fall-object-label{fill:var(--md-sys-color-tertiary);font-family:"Roboto","Noto Sans TC",sans-serif;font-size:12px;font-weight:500;paint-order:stroke;stroke:var(--md-sys-color-surface-container-low);stroke-width:5px;stroke-linejoin:round}.free-fall-velocity{stroke:var(--md-sys-color-primary);stroke-width:3;stroke-linecap:round}#free-fall-arrowhead path{fill:var(--md-sys-color-primary)}.free-fall-object{fill:var(--md-sys-color-primary);stroke:var(--md-sys-color-surface-container-low);stroke-width:4}.free-fall-charts{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1px;border-top:1px solid var(--md-sys-color-outline-variant);background:var(--md-sys-color-outline-variant)}.free-fall-chart{min-width:0;padding:14px 12px 10px;background:var(--md-sys-color-surface)}.free-fall-chart__heading{display:flex;align-items:baseline;justify-content:space-between;gap:8px;margin-bottom:4px}.free-fall-chart__heading h3{margin:0;color:var(--md-sys-color-on-surface);font-size:12px;font-weight:500}.free-fall-chart__heading span{color:var(--md-sys-color-on-surface-variant);font-size:10px;font-variant-numeric:tabular-nums;white-space:nowrap}.free-fall-chart svg{display:block;width:100%;height:auto;aspect-ratio:320 / 150;overflow:visible}.free-fall-chart [data-chart-view="grid"] line{stroke:var(--md-sys-color-outline-variant);stroke-width:1}.free-fall-chart [data-chart-view="path"]{fill:none;stroke:var(--md-sys-color-primary);stroke-width:2.5;stroke-linecap:round;stroke-linejoin:round}.free-fall-chart [data-chart-view="current-time"]{stroke:var(--md-sys-color-tertiary);stroke-width:1.5;stroke-dasharray:3 3}.free-fall-chart [data-chart-view="point"]{fill:var(--md-sys-color-tertiary);stroke:var(--md-sys-color-surface);stroke-width:2}.free-fall-chart [data-chart-view="labels"] text{fill:var(--md-sys-color-on-surface-variant);font-family:"Roboto","Noto Sans TC",sans-serif;font-size:9px}.free-fall-timeline{display:grid;grid-template-columns:auto minmax(240px,1fr);align-items:center;gap:20px;padding:16px 18px 18px;border-top:1px solid var(--md-sys-color-outline-variant)}.free-fall-transport{display:flex;flex-wrap:wrap;gap:8px}.free-fall-transport .md-btn{padding-inline:16px}.free-fall-transport .material-symbols-outlined{font-size:18px}.free-fall-time{display:grid;grid-template-columns:auto minmax(120px,1fr) 104px;align-items:center;gap:12px;min-width:0;color:var(--md-sys-color-on-surface-variant);font-size:12px}.free-fall-time input,.free-fall-parameter input[type="range"]{width:100%;accent-color:var(--md-sys-color-primary)}.free-fall-panel{padding:22px 20px}.free-fall-panel__heading{padding-bottom:18px;border-bottom:1px solid var(--md-sys-color-outline-variant)}.free-fall-panel__eyebrow{margin:0 0 4px;color:var(--md-sys-color-primary);font-size:12px;font-weight:500}.free-fall-panel h2{margin:0;font-size:20px;font-weight:400}.free-fall-parameters{display:grid;gap:20px;padding:20px 0}.free-fall-parameter{display:grid;gap:9px;color:var(--md-sys-color-on-surface-variant);font-size:12px}.free-fall-parameter>div{display:grid;grid-template-columns:1fr auto;align-items:center;gap:8px}.free-fall-parameter input[type="number"]{width:100%;height:38px;box-sizing:border-box;padding:0 10px;border:1px solid var(--md-sys-color-outline);border-radius:6px;background:var(--md-sys-color-surface);color:var(--md-sys-color-on-surface);font:inherit;font-variant-numeric:tabular-nums}.free-fall-parameter em{color:var(--md-sys-color-on-surface-variant);font-style:normal;white-space:nowrap}.free-fall-formula{display:grid;gap:7px;padding:16px 0;border-top:1px solid var(--md-sys-color-outline-variant);border-bottom:1px solid var(--md-sys-color-outline-variant)}.free-fall-formula p{margin:0;color:var(--md-sys-color-on-surface-variant);font-size:12px}.free-fall-formula code{color:var(--md-sys-color-on-surface);font-family:"Roboto Mono",monospace;font-size:12px}.free-fall-formula small{color:var(--md-sys-color-on-surface-variant);font-size:11px;line-height:17px}.free-fall-metrics{display:grid;gap:12px;margin:0;padding-top:18px}.free-fall-metrics div{display:flex;align-items:baseline;justify-content:space-between;gap:12px}.free-fall-metrics dt{color:var(--md-sys-color-on-surface-variant);font-size:12px}.free-fall-metrics dd{margin:0;color:var(--md-sys-color-on-surface);font-size:13px;font-variant-numeric:tabular-nums}@media (max-width:980px){.free-fall-workspace{grid-template-columns:1fr}.free-fall-panel{display:grid;grid-template-columns:minmax(160px,.7fr) minmax(220px,1fr);gap:0 24px}.free-fall-panel__heading{grid-column:1 / -1}.free-fall-parameters{align-content:start}.free-fall-formula{align-content:start}.free-fall-metrics{grid-column:1 / -1;grid-template-columns:repeat(3,1fr)}}@media (max-width:640px){.free-fall-page{padding-inline:16px}.free-fall-page__header{align-items:flex-start;flex-direction:column;gap:10px}.free-fall-page h1{font-size:28px}.free-fall-timeline{grid-template-columns:1fr;gap:14px}.free-fall-time{grid-template-columns:auto minmax(120px,1fr) 90px}.free-fall-panel{display:block}.free-fall-metrics{grid-template-columns:1fr}}