#science-lab .nsl-app{color-scheme:light dark;--nsl-paper:light-dark(#fff,#1e2230);--nsl-bg:light-dark(#f6f3fc,#151822);--nsl-ink:light-dark(#25223c,#f0ecfa);--nsl-muted:light-dark(#626271,#b8b7c8);--nsl-line:light-dark(#e5e2ed,#3b3c4c);--nsl-teal:light-dark(#256963,#8ad7c5);--nsl-teal-fill:light-dark(#def1e9,#243e3b);--nsl-purple:light-dark(#644a92,#c5b0ed);--nsl-purple-fill:light-dark(#eae2f7,#352b48);--nsl-blue:light-dark(#356ca0,#91c6ef);--nsl-blue-fill:light-dark(#e1eff9,#22384c);--nsl-warm:light-dark(#fff1d8,#413525);--nsl-sun:light-dark(#e4ae44,#efc66e);--nsl-shadow:light-dark(#d7d4df,#232334);--nsl-lunar:light-dark(#ece8e1,#e5e3d9);--nsl-night:light-dark(#222b48,#131b32);--nsl-moon-dark:light-dark(#4b536d,#4d556d);font-family:Mulish,system-ui,sans-serif;font-size:15px;line-height:1.6;background:var(--nsl-bg);color:var(--nsl-ink);border-radius:0;overflow:clip;min-height:100dvh;display:flex;flex-direction:column;isolation:isolate}
#science-lab .nsl-app *{box-sizing:border-box}
#science-lab .nsl-app [hidden]{display:none!important}
#science-lab .nsl-app h1,#science-lab .nsl-app h2,#science-lab .nsl-app h3,#science-lab .nsl-brand{font-family:Fredoka,system-ui,sans-serif;font-weight:500;line-height:1.16;letter-spacing:-.02em;color:var(--nsl-ink)}
#science-lab .nsl-app h1{font-size:44px;margin:14px 0 18px}
#science-lab .nsl-app h2{font-size:25px;margin:0 0 12px}
#science-lab .nsl-app h3{font-size:21px;margin:10px 0}
#science-lab .nsl-app p{margin:0 0 16px}
#science-lab .nsl-app button,#science-lab .nsl-app input{font:inherit;color:inherit}
#science-lab .nsl-app button{cursor:inherit}
#science-lab .nsl-app button:focus-visible,#science-lab .nsl-app a:focus-visible,#science-lab .nsl-app input:focus-visible,#science-lab .nsl-app summary:focus-visible{outline:3px solid var(--nsl-purple);outline-offset:4px}
#science-lab .nsl-app a{color:var(--nsl-teal);text-underline-offset:3px}
#science-lab .nsl-top{min-height:70px;background:var(--nsl-paper);border-bottom:1px solid var(--nsl-line);display:flex;align-items:center;gap:24px;padding:16px 108px 16px 28px;flex-wrap:wrap}
#science-lab .nsl-brand{font-size:23px;display:inline-flex;align-items:center;gap:9px;background:transparent;border:0;padding:0}
#science-lab .nsl-brandmark{width:30px;height:32px;border-radius:8px;background:var(--nsl-teal);color:var(--nsl-paper);display:grid;place-items:center;font-size:23px}
#science-lab .nsl-nav{display:flex;align-items:center;gap:20px;flex:1;justify-content:flex-end;flex-wrap:wrap}
#science-lab .nsl-nav a{color:var(--nsl-muted);text-decoration:none;font-size:13px}
#science-lab .nsl-nav button{background:var(--nsl-teal-fill);color:var(--nsl-teal);border:0;border-radius:8px;padding:7px 11px;font-size:13px}
#science-lab .nsl-main{padding:34px 40px 38px;flex:1;min-width:0}
#science-lab .nsl-eyebrow{font-size:11px;letter-spacing:.12em;text-transform:uppercase;font-weight:500;display:flex;align-items:center;gap:8px;color:var(--nsl-teal)}
#science-lab .nsl-eyebrow i{width:16px;height:16px}
#science-lab .nsl-hero{display:grid;grid-template-columns:1.06fr 1fr;gap:30px;align-items:center;margin-bottom:30px}
#science-lab .nsl-hero h1{max-width:420px}
#science-lab .nsl-hero p{max-width:400px;font-size:16px;color:var(--nsl-muted)}
#science-lab .nsl-actions{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
#science-lab .nsl-action{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--nsl-teal);color:var(--nsl-paper)!important;border:1px solid transparent;border-radius:10px;padding:11px 16px;font-weight:500;text-decoration:none;min-height:44px}
#science-lab .nsl-action.secondary{background:var(--nsl-paper);color:var(--nsl-ink)!important;border-color:var(--nsl-line)}
#science-lab .nsl-action.quiet{background:transparent;color:var(--nsl-teal)!important;padding-left:0}
#science-lab .nsl-action i{width:16px;height:16px}
#science-lab .nsl-moon-hero{min-width:0;position:relative;background:var(--nsl-purple-fill);border-radius:30px 30px 90px 30px;padding:16px;display:grid;place-items:center;min-height:270px}
#science-lab .nsl-moon-hero .nsl-capsule{position:absolute;bottom:18px;left:20px;background:var(--nsl-paper);border-radius:12px;padding:9px 14px;font-size:12px;box-shadow:0 5px 15px color-mix(in srgb,var(--nsl-ink) 8%,transparent)}
#science-lab .nsl-moon-hero svg{max-width:100%;width:290px;height:235px;display:block}
#science-lab .nsl-sectionhead{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;margin:0 0 16px}
#science-lab .nsl-sectionhead h2{margin:0}
#science-lab .nsl-filters{display:flex;gap:4px;flex-wrap:wrap}
#science-lab .nsl-filter{border:0;background:transparent;padding:7px 13px;border-radius:18px;color:var(--nsl-muted);font-size:13px}
#science-lab .nsl-filter[aria-pressed="true"]{background:var(--nsl-paper);color:var(--nsl-ink);box-shadow:0 0 0 1px var(--nsl-line)}
#science-lab .nsl-lessons{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
#science-lab .nsl-lessoncard{background:var(--nsl-paper);border:1px solid var(--nsl-line);border-radius:16px;overflow:hidden;min-width:0;display:flex;flex-direction:column}
#science-lab .nsl-cardart{height:144px;background:var(--nsl-purple-fill);position:relative;display:grid;place-items:center;border:0;width:100%;padding:12px}
#science-lab .nsl-cardart.water{background:var(--nsl-teal-fill)}
#science-lab .nsl-cardart.tides{background:var(--nsl-blue-fill)}
#science-lab .nsl-cardart svg{height:120px;max-width:100%;width:190px;display:block}
#science-lab .nsl-cardbody{padding:18px;display:flex;flex-direction:column;align-items:flex-start;flex:1}
#science-lab .nsl-cardbody p{font-size:13px;color:var(--nsl-muted);margin-bottom:14px}
#science-lab .nsl-cardbody .nsl-action{margin-top:auto;padding:7px 0;min-height:32px;font-size:13px}
#science-lab .nsl-tag{font-size:11px;letter-spacing:.07em;text-transform:uppercase;color:var(--nsl-muted)}
#science-lab .nsl-source-inline{font-size:11px;color:var(--nsl-muted);display:block;margin:10px 0 0}
#science-lab .nsl-source-inline a{color:inherit}
#science-lab .nsl-trust{margin:30px 0 0;padding:22px 0 0;border-top:1px solid var(--nsl-line);display:flex;gap:18px;justify-content:space-between;align-items:flex-start;font-size:12px;color:var(--nsl-muted)}
#science-lab .nsl-trust strong{font-weight:500;color:var(--nsl-ink);display:block;margin-bottom:3px}
#science-lab .nsl-trust i{width:18px;height:18px;color:var(--nsl-teal);flex:none}
#science-lab .nsl-trust-item{display:flex;gap:9px;flex:1}
#science-lab .nsl-foot{border-top:1px solid var(--nsl-line);padding:18px 40px;color:var(--nsl-muted);font-size:11px;display:flex;justify-content:space-between;gap:15px;flex-wrap:wrap;background:var(--nsl-paper)}
#science-lab .nsl-foot button{background:none;border:0;padding:0;text-decoration:underline;text-underline-offset:3px;color:var(--nsl-teal)}
#science-lab .nsl-breadcrumb{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--nsl-muted);margin:0 0 22px;flex-wrap:wrap}
#science-lab .nsl-breadcrumb button{background:none;border:0;padding:3px 0;color:var(--nsl-teal)}
#science-lab .nsl-title-row{display:flex;justify-content:space-between;align-items:flex-start;gap:15px}
#science-lab .nsl-title-row h1{font-size:36px;margin:8px 0 10px}
#science-lab .nsl-title-row>button{flex:none;border:1px solid var(--nsl-line);background:var(--nsl-paper);border-radius:10px;padding:9px 11px;display:flex;gap:7px;align-items:center;font-size:12px;min-height:40px}
#science-lab .nsl-title-row>button[aria-pressed="true"]{color:var(--nsl-teal);background:var(--nsl-teal-fill)}
#science-lab .nsl-title-row i{width:16px;height:16px}
#science-lab .nsl-byline{font-size:12px;color:var(--nsl-muted);margin-bottom:18px}
#science-lab .nsl-reader{background:var(--nsl-paper);border:1px solid var(--nsl-line);border-radius:12px;padding:13px 17px;margin:0 0 20px;display:flex;align-items:center;gap:12px;flex-wrap:wrap}
#science-lab .nsl-reader-summary{display:flex;align-items:center;gap:10px;flex:1;font-size:12px}
#science-lab .nsl-reader-summary i{width:15px;height:15px;color:var(--nsl-teal)}
#science-lab .nsl-reader button{background:transparent;border:0;color:var(--nsl-teal);font-size:12px;text-decoration:underline;text-underline-offset:3px;padding:4px}
#science-lab .nsl-reader-choice{flex-basis:100%;display:grid;grid-template-columns:1fr auto;align-items:center;gap:10px;padding-top:10px}
#science-lab .nsl-range-wrap{min-width:0}
#science-lab .nsl-app input[type="range"]{width:100%;accent-color:var(--nsl-teal);min-height:26px;display:block}
#science-lab .nsl-range-labels{display:flex;justify-content:space-between;font-size:11px;color:var(--nsl-muted)}
#science-lab .nsl-intro{font-size:16px;line-height:1.8;max-width:760px;min-height:58px;margin-bottom:16px!important}
#science-lab .nsl-wordrow{display:flex;gap:7px;align-items:center;flex-wrap:wrap;margin-bottom:20px;font-size:11px;color:var(--nsl-muted)}
#science-lab .nsl-wordrow button{padding:3px 8px;border:0;border-radius:5px;background:var(--nsl-purple-fill);color:var(--nsl-purple);font-size:11px}
#science-lab .nsl-definition{flex-basis:100%;padding:10px 13px;background:var(--nsl-paper);color:var(--nsl-ink);border-left:3px solid var(--nsl-purple);font-size:13px;margin-top:5px}
#science-lab .nsl-lab{border:1px solid var(--nsl-line);border-radius:18px;background:var(--nsl-paper);overflow:hidden;margin-bottom:24px}
#science-lab .nsl-lab-head{padding:16px 20px;border-bottom:1px solid var(--nsl-line);display:flex;justify-content:space-between;gap:10px;align-items:center;flex-wrap:wrap}
#science-lab .nsl-lab-head h2{font-size:20px;margin:0}
#science-lab .nsl-lab-head span{font-size:11px;color:var(--nsl-muted)}
#science-lab .nsl-moon-content{display:grid;grid-template-columns:1.45fr 1fr}
#science-lab .nsl-orbit{background:var(--nsl-night);color:var(--nsl-lunar);padding:15px 10px 10px;min-width:0}
#science-lab .nsl-orbit svg{width:100%;height:auto;display:block;max-height:290px;min-height:190px}
#science-lab .nsl-orbit .nsl-lab-note{color:var(--nsl-lunar);opacity:.8;text-align:center}
#science-lab .nsl-lab-note{font-size:11px;line-height:1.5;color:var(--nsl-muted);margin:8px 0 0!important}
#science-lab .nsl-earth-view{padding:22px 18px;text-align:center;background:var(--nsl-purple-fill);display:flex;flex-direction:column;align-items:center;justify-content:center;min-width:0}
#science-lab .nsl-earth-view svg{width:124px;height:124px;margin:9px 0}
#science-lab .nsl-view-label{font-size:11px;color:var(--nsl-muted)}
#science-lab .nsl-phase-name{font-family:Fredoka,system-ui,sans-serif;font-size:22px;font-weight:500;line-height:1.2}
#science-lab .nsl-controls{padding:17px 20px;border-top:1px solid var(--nsl-line)}
#science-lab .nsl-control-label{font-size:12px;display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap;margin-bottom:5px}
#science-lab .nsl-phase-presets{display:flex;gap:5px;flex-wrap:wrap;margin-top:10px}
#science-lab .nsl-phase-presets button{background:var(--nsl-bg);border:1px solid var(--nsl-line);border-radius:7px;padding:5px 10px;font-size:11px;min-height:32px}
#science-lab .nsl-phase-presets button[aria-pressed="true"]{color:var(--nsl-teal);background:var(--nsl-teal-fill);border-color:var(--nsl-teal)}
#science-lab .nsl-observation{font-size:13px;line-height:1.65;max-width:270px;margin:9px 0 0!important;color:var(--nsl-muted)}
#science-lab .nsl-quiz{background:var(--nsl-teal-fill);border-radius:14px;padding:20px;margin-bottom:22px}
#science-lab .nsl-quiz h2{font-size:21px;margin:5px 0 14px}
#science-lab .nsl-answers{display:grid;gap:7px}
#science-lab .nsl-answer{border:1px solid color-mix(in srgb,var(--nsl-teal) 20%,transparent);background:var(--nsl-paper);border-radius:8px;text-align:left;padding:10px 12px;font-size:13px;display:flex;gap:10px;align-items:flex-start;min-height:42px}
#science-lab .nsl-answer[aria-pressed="true"]{border-color:var(--nsl-teal);box-shadow:inset 3px 0 var(--nsl-teal)}
#science-lab .nsl-answer-letter{color:var(--nsl-teal);font-size:11px;padding-top:1px}
#science-lab .nsl-feedback{font-size:13px;margin-top:13px;display:flex;align-items:flex-start;gap:8px}
#science-lab .nsl-feedback i{width:17px;height:17px;flex:none;margin-top:2px}
#science-lab .nsl-sources{font-size:12px;color:var(--nsl-muted);padding:0 0 18px;border-bottom:1px solid var(--nsl-line)}
#science-lab .nsl-sources summary{color:var(--nsl-teal);font-weight:500;display:list-item;cursor:inherit}
#science-lab .nsl-sources ul{margin:10px 0 7px;padding-left:20px}
#science-lab .nsl-sources p{font-size:11px;margin:7px 0 0}
#science-lab .nsl-next{margin:22px 0 0;display:flex;gap:16px;justify-content:space-between;align-items:center;padding:17px 20px;background:var(--nsl-paper);border:1px solid var(--nsl-line);border-radius:12px}
#science-lab .nsl-next h3{font-size:19px;margin:4px 0 0}
#science-lab .nsl-next .nsl-action{font-size:12px;flex:none}
#science-lab .nsl-water-content{display:grid;grid-template-columns:1.4fr 1fr;gap:0}
#science-lab .nsl-water-scene{background:var(--nsl-blue-fill);min-width:0;display:grid;place-items:center;padding:20px 8px}
#science-lab .nsl-water-scene svg{width:100%;height:auto;min-height:190px;max-height:300px}
#science-lab .nsl-process-info{padding:25px 20px;display:flex;flex-direction:column;justify-content:center}
#science-lab .nsl-process-info h3{font-size:25px}
#science-lab .nsl-process-info p{font-size:14px}
#science-lab .nsl-process-switches{display:flex;gap:7px;flex-wrap:wrap;padding:17px;border-top:1px solid var(--nsl-line)}
#science-lab .nsl-process-switches button{border:1px solid var(--nsl-line);border-radius:8px;background:var(--nsl-bg);font-size:11px;padding:8px 10px;min-height:36px}
#science-lab .nsl-process-switches button[aria-pressed="true"]{background:var(--nsl-teal-fill);color:var(--nsl-teal);border-color:var(--nsl-teal)}
#science-lab .nsl-water-arrow{stroke:var(--nsl-blue);stroke-width:2.2;fill:none;opacity:.2}
#science-lab .nsl-water-arrow.active{stroke:var(--nsl-teal);stroke-width:5;opacity:1}
#science-lab .nsl-tide-content{display:grid;grid-template-columns:1.35fr 1fr}
#science-lab .nsl-tide-range{padding:24px 25px;background:var(--nsl-blue-fill)}
#science-lab .nsl-tide-range h3{font-size:24px}
#science-lab .nsl-range-illustration{height:130px;position:relative;margin:15px 0}
#science-lab .nsl-highwater,#science-lab .nsl-lowwater{height:2px;background:var(--nsl-blue);position:absolute;left:0;right:0}
#science-lab .nsl-highwater span,#science-lab .nsl-lowwater span{position:absolute;left:0;font-size:11px;top:-23px;background:var(--nsl-blue-fill);padding-right:7px}
#science-lab .nsl-lowwater span{top:4px}
#science-lab .nsl-range-band{position:absolute;left:0;right:0;background:color-mix(in srgb,var(--nsl-blue) 15%,transparent);display:flex;align-items:center;justify-content:center;font-size:12px;text-align:center}
#science-lab .nsl-guided-intro{max-width:680px;margin-bottom:25px}
#science-lab .nsl-guided-intro h1{font-size:42px;margin-bottom:12px}
#science-lab .nsl-guided-intro p{color:var(--nsl-muted);font-size:16px}
#science-lab .nsl-guided-layout{display:grid;grid-template-columns:1.5fr 1fr;gap:22px}
#science-lab .nsl-feature{background:var(--nsl-paper);border:1px solid var(--nsl-line);border-radius:20px;overflow:hidden}
#science-lab .nsl-feature-graphic{background:var(--nsl-purple-fill);display:flex;align-items:center;justify-content:center;min-height:230px}
#science-lab .nsl-feature-graphic svg{width:280px;height:230px;max-width:100%}
#science-lab .nsl-feature-body{padding:24px}
#science-lab .nsl-feature-body h2{font-size:29px;margin-top:8px}
#science-lab .nsl-feature-body p{font-size:14px;color:var(--nsl-muted)}
#science-lab .nsl-path{padding:20px 20px 12px;background:var(--nsl-teal-fill);border-radius:18px}
#science-lab .nsl-path h2{font-size:22px;margin-bottom:4px}
#science-lab .nsl-path>p{font-size:12px;color:var(--nsl-muted)}
#science-lab .nsl-path-step{display:flex;gap:12px;padding:18px 0;border-top:1px solid color-mix(in srgb,var(--nsl-teal) 18%,transparent)}
#science-lab .nsl-step-num{height:30px;width:30px;flex:none;background:var(--nsl-paper);border-radius:50%;display:grid;place-items:center;font-size:12px;color:var(--nsl-teal)}
#science-lab .nsl-path-step h3{font-size:18px;margin:0 0 6px}
#science-lab .nsl-path-step p{font-size:12px;color:var(--nsl-muted);margin-bottom:7px}
#science-lab .nsl-path-step button{background:none;border:0;padding:0;color:var(--nsl-teal);font-size:12px;text-decoration:underline;text-underline-offset:3px}
#science-lab .nsl-empty{padding:40px 20px;background:var(--nsl-paper);border-radius:16px;color:var(--nsl-muted);font-size:14px}
#science-lab .nsl-continuation{display:flex;justify-content:space-between;align-items:center;gap:12px;background:var(--nsl-teal-fill);border-radius:12px;padding:13px 17px;margin-bottom:23px;font-size:13px}
#science-lab .nsl-continuation button{border:0;background:transparent;color:var(--nsl-teal);font-size:12px;text-decoration:underline;flex:none}
#science-lab .nsl-app[data-density="Compact"] .nsl-main{padding:25px 28px}
#science-lab .nsl-earth-view [data-phase-disc]{min-width:0}
@media(max-width:540px){#science-lab .nsl-app[data-density="Compact"] .nsl-main{padding:22px 15px}#science-lab .nsl-earth-view [data-phase-disc]{grid-row:1/4;grid-column:1}}
@media(max-width:760px){#science-lab .nsl-top{gap:15px;padding:15px 95px 15px 20px}#science-lab .nsl-nav{gap:11px}#science-lab .nsl-nav a{display:none}#science-lab .nsl-main{padding:25px 23px}#science-lab .nsl-app h1{font-size:35px}#science-lab .nsl-hero{gap:20px}#science-lab .nsl-cardbody{padding:14px}#science-lab .nsl-cardbody h3{font-size:19px}#science-lab .nsl-moon-content,#science-lab .nsl-water-content,#science-lab .nsl-tide-content{grid-template-columns:1.15fr 1fr}#science-lab .nsl-guided-layout{grid-template-columns:1.15fr 1fr}#science-lab .nsl-trust{gap:14px}#science-lab .nsl-foot{padding:18px 23px}}
@media(max-width:540px){#science-lab .nsl-app{border-radius:0;min-height:100dvh;font-size:14px}#science-lab .nsl-top{gap:10px;padding:15px 96px 15px 16px;min-height:74px}#science-lab .nsl-brand{font-size:21px}#science-lab .nsl-nav{justify-content:flex-start;flex:0 0 100%;gap:10px}#science-lab .nsl-nav button{padding:5px 9px;font-size:11px}#science-lab .nsl-main{padding:25px 17px 28px}#science-lab .nsl-hero,#science-lab .nsl-guided-layout{grid-template-columns:1fr}#science-lab .nsl-app h1{font-size:34px}#science-lab .nsl-hero h1{margin:10px 0 14px}#science-lab .nsl-hero p{font-size:14px}#science-lab .nsl-moon-hero{min-height:230px;border-bottom-right-radius:64px}#science-lab .nsl-moon-hero svg{height:200px}#science-lab .nsl-lessons{grid-template-columns:1fr}#science-lab .nsl-lessoncard{display:grid;grid-template-columns:100px 1fr;align-items:stretch}#science-lab .nsl-cardart{height:100%;min-height:220px;padding:5px}#science-lab .nsl-cardart svg{width:95px;height:130px}#science-lab .nsl-cardbody{padding:17px 15px}#science-lab .nsl-cardbody h3{font-size:21px}#science-lab .nsl-trust{flex-direction:column;margin-top:24px}#science-lab .nsl-title-row h1{font-size:30px}#science-lab .nsl-title-row>button{font-size:0;padding:10px}#science-lab .nsl-title-row>button i{width:18px;height:18px}#science-lab .nsl-intro{font-size:15px;min-height:100px}#science-lab .nsl-lab-head{padding:14px}#science-lab .nsl-moon-content,#science-lab .nsl-water-content,#science-lab .nsl-tide-content{grid-template-columns:1fr}#science-lab .nsl-earth-view{padding:18px;display:grid;grid-template-columns:105px 1fr;column-gap:16px;text-align:left;align-items:center}#science-lab .nsl-earth-view svg{width:95px;height:95px;grid-row:1/4;margin:0}#science-lab .nsl-earth-view .nsl-view-label{grid-column:2;grid-row:1}#science-lab .nsl-earth-view .nsl-phase-name{grid-column:2;grid-row:2;font-size:23px}#science-lab .nsl-earth-view .nsl-observation{grid-column:2;grid-row:3;font-size:12px;margin:4px 0 0!important}#science-lab .nsl-orbit{padding:9px 6px}#science-lab .nsl-orbit svg{min-height:185px}#science-lab .nsl-controls{padding:15px}#science-lab .nsl-quiz{padding:17px}#science-lab .nsl-next{padding:15px;flex-wrap:wrap}#science-lab .nsl-next .nsl-action{padding:8px 0;background:transparent;color:var(--nsl-teal)!important}#science-lab .nsl-water-scene{padding:9px}#science-lab .nsl-process-info{padding:19px}#science-lab .nsl-process-info h3{margin-top:0}#science-lab .nsl-guided-intro h1{font-size:35px}#science-lab .nsl-foot{padding:16px 17px}#science-lab .nsl-guided-layout{gap:18px}#science-lab .nsl-tide-range{padding:20px}#science-lab .nsl-reader-choice{grid-template-columns:1fr}#science-lab .nsl-reader-choice button{text-align:left;justify-self:start}#science-lab .nsl-phase-presets button,#science-lab .nsl-process-switches button{min-height:44px}#science-lab .nsl-wordrow button{min-height:35px}}
@media(prefers-reduced-motion:reduce){#science-lab *{scroll-behavior:auto!important}}
/* Published Guided journey pages. Shared Nepedia navigation remains unchanged in style. */
html,body{margin:0;padding:0}
#science-lab .nsl-main{max-width:1140px;width:100%;margin:0 auto}
#science-lab .nsl-app{--disp:Fredoka,system-ui,sans-serif;--body:Mulish,system-ui,sans-serif}
#science-lab .nsl-skip{position:absolute;left:-9999px;padding:12px;background:var(--nsl-paper);z-index:100}
#science-lab .nsl-skip:focus{left:15px;top:12px}
#science-lab .nsl-main a{text-decoration-thickness:1px}
#science-lab .nsl-feature-graphic{min-height:235px}
#science-lab .nsl-all-discoveries{margin-top:32px}
#science-lab .nsl-trail-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
#science-lab .nsl-trail-card{background:var(--nsl-paper);border:1px solid var(--nsl-line);border-radius:16px;padding:23px}
#science-lab .nsl-trail-card h3{font-size:24px;margin:8px 0 16px}
#science-lab .nsl-trail-card h3 a{color:var(--nsl-ink);text-decoration:none}
#science-lab .nsl-trail-card ul{list-style:none;padding:0;margin:0}
#science-lab .nsl-trail-card li{padding:8px 0;border-bottom:1px solid var(--nsl-line);font-size:14px}
#science-lab .nsl-trail-card li:last-child{border:0}
#science-lab .nsl-check-label{display:block;font-size:11px;color:var(--nsl-teal);margin-top:4px}
#science-lab .nsl-path-step h3 a{color:inherit;text-decoration:none}
#science-lab .nsl-path-step a{font-size:13px}
#science-lab .nsl-journey-list{padding:0;margin:25px 0;list-style:none;display:grid;gap:14px}
#science-lab .nsl-journey-list>li{display:flex;gap:17px;background:var(--nsl-paper);border:1px solid var(--nsl-line);padding:22px;border-radius:14px}
#science-lab .nsl-journey-list h2{font-size:25px;margin:0 0 9px}
#science-lab .nsl-journey-list h2 a{color:var(--nsl-ink);text-decoration:none}
#science-lab .nsl-journey-list p{color:var(--nsl-muted);margin-bottom:7px}
#science-lab .nsl-journey-progress{color:var(--nsl-teal);font-size:13px}
#science-lab .nsl-save{min-width:65px;font-size:13px!important}
#science-lab .nsl-reader{display:block}
#science-lab .nsl-reader>summary{display:flex;justify-content:space-between;gap:10px;align-items:center;font-size:13px;min-height:27px;cursor:pointer}
#science-lab .nsl-reader-change{color:var(--nsl-teal);text-decoration:underline;text-underline-offset:3px}
#science-lab .nsl-reader-choice label{font-size:13px}
#science-lab .nsl-reader-choice button{min-height:44px;padding:8px 12px;border:1px solid var(--nsl-line);border-radius:8px;background:var(--nsl-teal-fill);color:var(--nsl-teal);text-decoration:none}
#science-lab .nsl-level-links{display:flex;gap:7px;flex-wrap:wrap;margin-top:9px;font-size:12px}
#science-lab .nsl-level-links a{padding:6px 10px;min-height:36px;display:flex;align-items:center;border-radius:6px;text-decoration:none;background:var(--nsl-bg)}
#science-lab .nsl-level-links a[aria-current]{background:var(--nsl-teal-fill);color:var(--nsl-teal)}
#science-lab .nsl-word{position:relative}
#science-lab .nsl-word summary{display:block;padding:5px 9px;background:var(--nsl-purple-fill);color:var(--nsl-purple);border-radius:6px;cursor:pointer;font-size:12px;min-height:31px}
#science-lab .nsl-word[open]{flex:1 1 100%}
#science-lab .nsl-word p{font-size:14px;color:var(--nsl-ink);background:var(--nsl-paper);padding:12px;border-left:3px solid var(--nsl-purple);margin:5px 0 0}
#science-lab .nsl-lab-head button{border:0;background:transparent;color:var(--nsl-teal);text-decoration:underline;text-underline-offset:3px;font-size:12px;min-height:34px}
#science-lab .nsl-model-caption{padding:13px 19px;border-top:1px solid var(--nsl-line);font-size:12px;line-height:1.65;color:var(--nsl-muted);margin:0}
#science-lab .nsl-observe{margin:0 0 23px;font-size:14px}
#science-lab .nsl-observe summary{color:var(--nsl-teal);font-weight:500;cursor:pointer;min-height:32px}
#science-lab .nsl-observe ul{margin:9px 0 0;padding-left:23px;line-height:1.8}
#science-lab .nsl-key-idea{padding:16px 19px;border-left:3px solid var(--nsl-teal);background:var(--nsl-paper);font-size:15px}
#science-lab .nsl-sources h2{font-size:21px;margin-top:27px}
#science-lab .nsl-sources li{margin:6px 0}
#science-lab .nsl-back-row{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:13px;margin-top:18px}
#science-lab .nsl-storage-status{font-size:13px;color:var(--nsl-muted);margin:12px 0}
#science-lab .nsl-saved-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:15px;margin:24px 0}
#science-lab .nsl-saved-card{padding:22px;background:var(--nsl-paper);border:1px solid var(--nsl-line);border-radius:14px}
#science-lab .nsl-saved-card h2{font-size:23px}
#science-lab .nsl-saved-card p{font-size:14px;color:var(--nsl-muted)}
#science-lab .nsl-saved-card button{background:transparent;border:0;color:var(--nsl-teal);text-decoration:underline;font-size:13px;min-height:40px;padding:0}
#science-lab .nsl-continuation strong{display:block;margin-top:3px;font-weight:500}
#science-lab .science-controls{padding:17px 20px;display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:15px;border-bottom:1px solid var(--nsl-line)}
#science-lab .science-control{display:block;min-width:0;border:0;padding:0;margin:0}
#science-lab .science-control-label{display:block;font-size:13px;font-weight:500;margin:0 0 7px;padding:0}
#science-lab .science-control output{float:right;font-size:12px;font-variant-numeric:tabular-nums;color:var(--nsl-muted)}
#science-lab .science-control select{font:inherit;font-size:14px;color:var(--nsl-ink);border:1px solid var(--nsl-line);background:var(--nsl-paper);padding:10px 9px;border-radius:8px;width:100%;min-height:44px}
#science-lab .science-control button{border:1px solid var(--nsl-line);border-radius:7px;padding:8px 11px;background:var(--nsl-bg);font-size:12px;min-height:40px;margin:0 5px 5px 0}
#science-lab .science-control button[aria-pressed="true"]{background:var(--nsl-teal-fill);color:var(--nsl-teal);border-color:var(--nsl-teal)}
#science-lab .science-visual{min-width:0}
#science-lab .science-visual>svg{width:100%;height:auto;display:block;padding:15px;max-width:100%}
#science-lab .science-visual .nsl-water-scene{min-width:0;padding:18px 10px}
#science-lab .science-visual .nsl-water-scene svg{max-height:none;min-height:0;width:100%;height:auto;display:block}
#science-lab .science-observation{padding:15px 20px;font-size:14px;background:var(--nsl-teal-fill);border-top:1px solid var(--nsl-line);line-height:1.7}
#science-lab .science-visual>.science-result,#science-lab .science-visual>.science-model-note,#science-lab .science-visual>.science-credit{padding:0 20px 15px}
#science-lab .science-result{font-size:15px;line-height:1.7}
#science-lab .science-model-note,#science-lab .science-credit{font-size:12px;color:var(--nsl-muted);line-height:1.65}
#science-lab .science-model-grid{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);align-items:center;gap:18px;padding:20px}
#science-lab .science-model-grid svg{width:100%;height:auto;min-width:0}
#science-lab .science-photo{max-width:100%;height:auto;display:block;border-radius:12px}
#science-lab .science-data-table{border-collapse:collapse;font-size:12px;width:100%;margin-top:15px}
#science-lab .science-data-table th,#science-lab .science-data-table td{text-align:left;border-bottom:1px solid var(--nsl-line);padding:7px}
#science-lab .science-data-table td{font-variant-numeric:tabular-nums}
#science-lab .science-data-table caption{font-size:12px;text-align:left;color:var(--nsl-muted);padding:5px}
#science-lab .science-visual figure{margin:0}
#science-lab .science-visual figcaption{padding-top:9px}
#science-lab .science-visual a{overflow-wrap:anywhere}
#science-lab .science-visual>p{margin:15px 20px}
#science-lab .nsl-activity-loading{padding:20px}
@media(max-width:700px){#science-lab .nsl-trail-grid,#science-lab .nsl-saved-grid{grid-template-columns:1fr}#science-lab .science-model-grid{grid-template-columns:1fr;padding:16px}#science-lab .science-controls{grid-template-columns:1fr;padding:16px}#science-lab .science-control select{font-size:16px}#science-lab .nsl-sources a{overflow-wrap:anywhere}#science-lab .nsl-journey-list>li{padding:17px;gap:12px}#science-lab .nsl-journey-list h2{font-size:23px}#science-lab .nsl-continuation{flex-wrap:wrap}#science-lab .nsl-action{font-size:14px}}
@media print{#science-lab .np-site-header,#science-lab .science-controls,#science-lab .nsl-save,#science-lab .nsl-reader,#science-lab .nsl-foot{display:none!important}#science-lab .nsl-main{padding:0}#science-lab .nsl-app{background:white;color:black}}


/* Learn, watch, then explore. Motion controls remain in reach outside the scene. */
#science-lab .science-lab-eyebrow{display:block;font-size:10px;text-transform:uppercase;letter-spacing:.12em;font-weight:800;color:var(--nsl-muted);margin-bottom:6px}
#science-lab .nsl-lab-head h2{margin:0}
#science-lab .science-walkthrough{margin:0;padding:24px 24px 20px;background:linear-gradient(110deg,#F6F2FC,#F0F7F4);border-bottom:1px solid var(--nsl-line)}
#science-lab .science-walkthrough[hidden],#science-lab .science-playback[hidden]{display:none}
#science-lab .science-walkthrough-eyebrow{margin:0 0 6px;text-transform:uppercase;letter-spacing:.1em;font-size:10px;font-weight:800;color:#6C6291}
#science-lab .science-walkthrough-title{font-family:var(--nsl-display);font-weight:500;font-size:25px;line-height:1.25;margin:0 0 9px;letter-spacing:-.02em}
#science-lab .science-walkthrough-text{font-size:15px;line-height:1.75;margin:0;max-width:810px;color:#504C65}
#science-lab .science-tour-nav{display:flex;align-items:center;gap:15px;margin-top:17px;flex-wrap:wrap}
#science-lab .science-tour-nav button{font:inherit;font-size:12px;font-weight:700;border:1px solid #CFC8E0;background:#fff;color:#655186;border-radius:9px;min-height:40px;padding:8px 14px;cursor:pointer}
#science-lab .science-tour-nav button:disabled{opacity:.45;cursor:default}
#science-lab .science-tour-count{font-size:11px;color:#77708C;font-variant-numeric:tabular-nums}
#science-lab .science-tour-next{margin-left:auto}
#science-lab .science-playback{display:grid;grid-template-columns:1fr auto;gap:12px 20px;padding:20px 24px 16px;border-bottom:1px solid var(--nsl-line);background:#fff}
#science-lab .science-playback-label{align-self:center;font-family:var(--nsl-display);font-size:18px;font-weight:500;line-height:1.35}
#science-lab .science-playback-buttons{display:flex;flex-wrap:wrap;gap:7px}
#science-lab .science-playback button{font:inherit;font-size:12px;font-weight:700;line-height:1.3;min-height:42px;border-radius:10px;padding:9px 13px;border:1px solid var(--nsl-line);background:#F6F4FA;color:var(--nsl-ink);cursor:pointer}
#science-lab .science-playback .science-play{color:#fff;background:#356F67;border-color:#356F67;min-width:150px}
#science-lab .science-playback button:disabled{cursor:default;opacity:.5}
#science-lab .science-seek{grid-column:1/-1;display:flex;margin:0;width:100%}
#science-lab .science-seek input{width:100%;height:24px;margin:0;accent-color:#547E73;cursor:pointer}
#science-lab .science-playback-status{grid-column:1/-1;font-size:11px;line-height:1.6;color:var(--nsl-muted);margin:-4px 0 0;min-height:18px}
#science-lab .science-visually-hidden{position:absolute;width:1px;height:1px;margin:-1px;padding:0;clip:rect(0,0,0,0);overflow:hidden;white-space:nowrap;border:0}
#science-lab .science-try-title{margin:0;padding:21px 24px 0;font-family:var(--nsl-display);font-size:20px;font-weight:500}
#science-lab .science-visual{isolation:isolate;background:#FAFBFD;min-height:120px}
#science-lab .science-controls{border-top:0;border-bottom:0;padding-top:15px}
#science-lab .science-observation{background:#EAF4EE;color:#355D51}
#science-lab .science-playback button:focus-visible,#science-lab .science-tour-nav button:focus-visible{outline:3px solid #7566B4;outline-offset:3px}
#science-lab .nsl-cloud-guide,#science-lab .nsl-earth-guide{margin:28px 0;background:#fff;border:1px solid var(--nsl-line);border-radius:20px;padding:25px}
#science-lab .nsl-cloud-guide>h2,#science-lab .nsl-earth-guide>h2{font-family:var(--nsl-display);font-size:27px;font-weight:500;line-height:1.25;margin:0 0 10px}
#science-lab .nsl-cloud-guide>p,#science-lab .nsl-earth-guide>p{font-size:14px;line-height:1.7;margin:0 0 18px;color:#625B74}
#science-lab .nsl-cloud-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:15px}
#science-lab .nsl-cloud-card{margin:0;min-width:0;border:1px solid var(--nsl-line);border-radius:12px;overflow:hidden;background:#FAFBFD}
#science-lab .nsl-cloud-card .science-photo{display:block;width:100%;aspect-ratio:1.25;object-fit:cover;border-radius:0;height:auto}
#science-lab .nsl-cloud-card figcaption{padding:12px}
#science-lab .nsl-cloud-card h3{font-size:16px;line-height:1.3;margin:0 0 6px;font-weight:800;overflow-wrap:anywhere}
#science-lab .nsl-cloud-card p{font-size:12px;line-height:1.6;margin:0 0 6px}
#science-lab .nsl-cloud-card .nsl-source-inline{font-size:9px;line-height:1.45;color:#777380}
#science-lab .nsl-cloud-guide>p.nsl-source-inline{font-size:11px;margin:15px 0 0}
#science-lab .nsl-earth-guide .nsl-earth-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
#science-lab .nsl-earth-guide figure{margin:0;min-width:0;border:1px solid var(--nsl-line);border-radius:13px;overflow:hidden;background:#FAFBFD}
#science-lab .nsl-earth-guide img{display:block;width:100%;height:145px;object-fit:cover}
#science-lab .nsl-earth-guide figcaption{padding:14px}
#science-lab .nsl-earth-guide h3{font-size:17px;line-height:1.35;margin:0 0 7px}
#science-lab .nsl-earth-guide figcaption p{font-size:13px;line-height:1.7;margin:0 0 8px}
#science-lab .nsl-earth-guide .nsl-source-inline{font-size:10px;line-height:1.5;color:#777380}
@media(max-width:760px){#science-lab .science-playback{grid-template-columns:1fr;padding:17px}#science-lab .science-playback-buttons{gap:6px}#science-lab .science-playback-label{font-size:17px}#science-lab .science-playback button{font-size:11px;padding:8px 11px}#science-lab .science-playback .science-play{min-width:137px}#science-lab .science-walkthrough{padding:21px 18px}#science-lab .science-walkthrough-title{font-size:23px}#science-lab .science-walkthrough-text{font-size:14px}#science-lab .nsl-cloud-grid{grid-template-columns:repeat(2,minmax(0,1fr))}#science-lab .nsl-cloud-guide,#science-lab .nsl-earth-guide{padding:18px}#science-lab .nsl-earth-guide .nsl-earth-grid{grid-template-columns:1fr}#science-lab .nsl-earth-guide img{height:180px}}
@media(max-width:380px){#science-lab .science-playback button{font-size:10px;padding:8px 9px}#science-lab .science-playback .science-play{min-width:126px}#science-lab .nsl-cloud-grid{gap:9px}#science-lab .nsl-cloud-card figcaption{padding:9px}#science-lab .nsl-cloud-card h3{font-size:14px}#science-lab .nsl-cloud-card p{font-size:11px}}
/* Merge into the shared Science stylesheet. All motion is opt-in on the host. */
.nsl-earth-event {opacity:1}
.nsl-earth-layer {stroke-dasharray:1000;stroke-dashoffset:0}
[data-science-active="true"] .nsl-earth-event {
  animation:nsl-earth-event-in .08s steps(1,end) both;
  animation-delay:calc(var(--nsl-play-duration,16s) * var(--nsl-event-at,0) + var(--nsl-play-offset,0s));
  animation-play-state:paused;
}
[data-science-active="true"] .nsl-earth-layer {
  animation:nsl-earth-layer-in 2.4s ease both;
  animation-delay:calc(var(--nsl-play-duration,12s) * var(--nsl-layer-at,0) + var(--nsl-play-offset,0s));
  animation-play-state:paused;
}
[data-science-active="true"][data-science-playing="true"] .nsl-earth-event,
[data-science-active="true"][data-science-playing="true"] .nsl-earth-layer {animation-play-state:running}
@keyframes nsl-earth-event-in {from{opacity:0}to{opacity:1}}
@keyframes nsl-earth-layer-in {from{stroke-dashoffset:1000}to{stroke-dashoffset:0}}
.nsl-earth-guide{margin:18px 0 24px;padding:20px;border:1px solid var(--nsl-line,#d6dce4);border-radius:18px;background:var(--nsl-paper,#f7f8fc)}
.nsl-earth-guide h2{margin:0 0 10px}
.nsl-earth-guide p{line-height:1.65}
.nsl-earth-guide-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.nsl-earth-guide-grid article{padding:14px;border-radius:12px;background:var(--nsl-card,#fff)}
.nsl-earth-guide-grid h3{font-size:1rem;margin:4px 0 7px}
.nsl-earth-guide-grid svg{display:block;width:100%;height:auto;max-height:90px}
@media(max-width:680px){.nsl-earth-guide-grid{grid-template-columns:1fr}}
@media(prefers-reduced-motion:reduce){
  [data-science-active="true"] .nsl-earth-event,
  [data-science-active="true"] .nsl-earth-layer {animation-play-state:paused!important}
}
/* Merge into Science CSS. Only the opt-in cloud overlay uses CSS motion. */
#science-lab .science-cloud-cue{position:absolute;inset:0;display:block;width:100%;height:100%;pointer-events:none;overflow:visible}
#science-lab .science-cloud-trace{fill:none;stroke:#ffeb8a;stroke-width:5;stroke-linecap:round;stroke-linejoin:round;filter:drop-shadow(0 1px 2px #142e47);opacity:0;stroke-dasharray:100;stroke-dashoffset:100}
#science-lab [data-science-active="true"] .science-cloud-trace{opacity:1;animation:nsl-cloud-trace var(--nsl-play-duration,12s) linear both;animation-delay:var(--nsl-play-offset,0s);animation-play-state:paused}
#science-lab [data-science-active="true"][data-science-playing="true"] .science-cloud-trace{animation-play-state:running}
@keyframes nsl-cloud-trace{0%{stroke-dashoffset:100}65%,100%{stroke-dashoffset:0}}
@media(prefers-reduced-motion:reduce){#science-lab .science-cloud-trace{animation:none!important;stroke-dashoffset:0}}

#science-lab .nsl-app{--nsl-display:Fredoka,system-ui,sans-serif}

/* Keep the new teaching panels readable with the existing light/dark preference. */
#science-lab .science-walkthrough{background:linear-gradient(110deg,light-dark(#F6F2FC,#282538),light-dark(#F0F7F4,#20312E))}
#science-lab .science-walkthrough-text{color:var(--nsl-muted)}
#science-lab .science-playback,#science-lab .nsl-cloud-guide,#science-lab .nsl-earth-guide{background:var(--nsl-paper)}
#science-lab .science-visual{background:light-dark(#FAFBFD,#1B2230)}
#science-lab .science-observation{background:var(--nsl-teal-fill);color:var(--nsl-teal)}
#science-lab .nsl-cloud-card{background:var(--nsl-bg)}
#science-lab .nsl-cloud-guide>p,#science-lab .nsl-earth-guide>p{color:var(--nsl-muted)}
#science-lab .nsl-cloud-card .nsl-source-inline{font-size:11px;color:var(--nsl-muted)}

#science-lab .science-walkthrough-eyebrow{color:light-dark(#6C6291,#C4B3E4)}
#science-lab .science-tour-count{color:light-dark(#746B88,#BEB0CF)}