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var(--sheet-pad-x,0px));padding:var(--step-band-top) var(--sheet-pad-x,0px) .5rem;background:var(--lm-color-bg-surface);position:sticky;inset-block-start:var(--lm-layout-topbar,0rem)}.step-page .lesson-main.reading-sheet>.step-strip-band[data-stuck]{box-shadow:0 1px 0 var(--lm-color-border-default), 0 .75rem 1rem -1rem var(--lm-shadow-far)}}@media screen and (prefers-reduced-motion:no-preference){.step-page .lesson-main.reading-sheet>.step-strip-band{transition:box-shadow var(--lm-motion-duration-base) var(--lm-motion-easing-standard)}}@media screen and (width<=47.99rem){.step-page .lesson-main.reading-sheet>.step-strip-band{--step-band-top:.5rem}.step-strip-name{white-space:nowrap}.step-strip li:not([data-state=current]) .step-strip-name{clip-path:inset(50%);white-space:nowrap;block-size:1px;inline-size:1px;position:absolute;overflow:hidden}}:root[data-js] .step-body:not([data-stepper])>.step-stage:first-of-type{border-block-start:1px solid #0000;padding-block-end:1.5rem}:root[data-js] .step-body:not([data-stepper])>.step-stage:not(:first-of-type){border-block-start:1px solid var(--lm-color-border-default);margin-block-start:0}:root[data-js] .step-body:not([data-stepper])>.step-stage[data-stage]:not(:first-of-type){max-block-size:calc(3rem + 15px);animation:0s 8s forwards step-unfold;overflow:clip}:root[data-js] .lm-prose .step-body:not([data-stepper]) :is(.step-stage,.step-stage-head)>h2{min-block-size:3rem}:root[data-js] .step-body:not([data-stepper])>.step-stage[data-stage]:not(:first-of-type)>h2{visibility:hidden;animation:0s 8s forwards step-unfold}@keyframes step-unfold{to{visibility:visible;max-block-size:none;overflow:visible}}.step-know{display:none}:root[data-js][data-signed-in] .step-know,:root[data-js] .step-know:is([data-open],[data-shown]){display:block}[data-stepper] .step-stage{border-block-start:1px solid var(--lm-color-border-default);margin-block-start:0}[data-stepper] .step-stage[data-view=open]+.step-stage,[data-stepper]>.step-stage:first-of-type{border-block-start-color:#0000}[data-stepper] .step-stage[data-view=open]{min-block-size:var(--stage-room,0);padding-block-end:1.5rem}[data-stepper] .step-stage-head{align-items:center}[data-stepper] .step-stage-head>h2{flex:auto}.lm-prose [data-stepper] :is(.step-stage,.step-stage-head)>h2{font-size:inherit;line-height:inherit;margin:0}.step-stage-toggle{border-radius:var(--lm-radius-sm);min-block-size:3rem;inline-size:100%;font-family:var(--lm-font-family-ui);font-size:var(--lm-font-size-base);text-align:start;color:var(--lm-color-fg-muted);cursor:pointer;transition:color var(--lm-motion-duration-base) var(--lm-motion-easing-standard);align-items:center;gap:.625rem;padding:.5rem .25rem;font-weight:600;line-height:1.3;display:flex}.step-stage-toggle:hover{color:var(--lm-color-fg-default)}.step-stage-toggle:focus-visible{outline:var(--lm-focus-width) solid var(--lm-color-focus-ring);outline-offset:2px}.step-stage-icon,.step-stage-check{border-radius:var(--lm-radius-full);background:var(--sheet-panel,var(--lm-color-bg-hover));flex:none;place-items:center;block-size:2rem;inline-size:2rem;display:inline-grid}.step-stage-check{color:var(--lm-color-status-ok-fg);background:var(--lm-color-status-ok-bg);display:none}[data-done] .step-stage-check{display:inline-grid}[data-done] .step-stage-icon{display:none}.step-stage-name{flex:none}.step-stage-result{min-inline-size:0;font-size:var(--lm-font-size-sm);color:var(--lm-color-fg-muted);text-overflow:ellipsis;white-space:nowrap;flex:auto;font-weight:400;overflow:hidden}.step-stage-result:not(:empty):before{content:"·";margin-inline-end:.5rem}.step-stage-chevron{block-size:.5rem;inline-size:.5rem;transition:rotate var(--lm-motion-duration-base) var(--lm-motion-easing-standard);border-block-end:1.5px solid;border-inline-end:1.5px solid;flex:none;margin-inline:auto .5rem;translate:0 -.125rem;rotate:45deg}@media (prefers-reduced-motion:reduce){.step-stage-chevron{transition:none}}.step-stage-result:not(:empty)+.step-stage-chevron{margin-inline-start:.75rem}[data-view=open] .step-stage-toggle{font-size:var(--lm-font-size-xl);color:var(--lm-color-fg-default)}[data-view=open] .step-stage-icon{color:var(--lm-dept-mark);background:var(--lm-dept-tint)}[data-view=open] .step-stage-result{display:none}[data-view=open] .step-stage-chevron{margin-inline-start:auto;translate:0 .125rem;rotate:-135deg}.step-stage-body{grid-template-rows:1fr;grid-template-columns:minmax(0,1fr);display:grid}.step-stage-inner{min-block-size:0;position:relative}[data-view=shut]>.step-stage-body{visibility:hidden;grid-template-rows:0fr}[data-view=shut]>.step-stage-body>.step-stage-inner{overflow:clip}[data-view=open]>.step-stage-body>.step-stage-inner{padding-block-start:.5rem}@media (prefers-reduced-motion:no-preference){.step-stage-body{transition:grid-template-rows var(--lm-motion-duration-slow) var(--lm-motion-easing-enter), visibility 0s linear var(--lm-motion-duration-slow)}[data-view=open]>.step-stage-body{transition:grid-template-rows var(--lm-motion-duration-slow) var(--lm-motion-easing-enter), visibility 0s}[data-view=open]>.step-stage-body>.step-stage-inner{animation:step-stage-rise var(--lm-motion-duration-slow) var(--lm-motion-easing-enter) both}}@keyframes step-stage-rise{0%{opacity:0;translate:0 .5rem}}[data-stepper] [data-view=shut] .step-stage-head>.lm-helper{display:none}@media print{[data-view=shut]>.step-stage-body{visibility:visible;grid-template-rows:1fr}}