:root{color-scheme:dark;--bg:#10172b;--panel:#19243d;--line:#34405b;--muted:#b6c2d9;--mint:#98e7d0;--gold:#f5ca7b;--white:#f4f5fc;font-family:system-ui,-apple-system,"PingFang TC","Microsoft JhengHei",sans-serif;background:var(--bg);color:var(--white);font-synthesis:none}*{box-sizing:border-box}body{margin:0;background:radial-gradient(ellipse at 85% 10%,#23375266,transparent 40%),var(--bg)}html{scroll-behavior:smooth;scroll-padding-top:20px}button,a,input,summary{-webkit-tap-highlight-color:transparent}button,input{font:inherit}button{min-height:46px;border:1px solid var(--line);border-radius:12px;background:#22304b;color:var(--white);padding:10px 17px;font-weight:650;cursor:pointer;touch-action:manipulation;transition:background .15s,border-color .15s}button:hover{background:#314362;border-color:#8194b5}button:disabled{cursor:default;opacity:.45}button:focus-visible,a:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid var(--gold);outline-offset:4px}a{color:var(--mint)}.primary{background:var(--mint);color:#132e2e;border-color:var(--mint)}.primary:hover{background:#b4f1df;border-color:#b4f1df}[hidden]{display:none!important}.skip{position:fixed;top:-100px;z-index:50;padding:15px;background:var(--gold);color:#10172b}.skip:focus{top:8px}.header,main,footer{max-width:1440px;margin:auto}.header{padding:26px 48px;display:flex;align-items:center;justify-content:space-between;gap:12px;border-bottom:1px solid #ffffff12}.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--white);font-size:21px;font-weight:750;letter-spacing:1px}.brand-symbol{font-size:32px;color:var(--gold);width:48px;height:48px;display:grid;place-items:center;border:1px solid #f5ca7b55;border-radius:50%}.brand small{display:block;font-size:9px;letter-spacing:2px;color:var(--muted);margin-top:5px;font-weight:500}.back-hub{min-height:44px;display:flex;align-items:center;font-size:14px;text-decoration:none;color:var(--muted)}main{padding:0 48px}.hero{display:grid;grid-template-columns:1fr 1.15fr;gap:25px;align-items:center;padding:48px 0 45px}.eyebrow{font-size:12px;font-weight:700;letter-spacing:2px;color:var(--mint);margin:0 0 16px}.status-dot{width:7px;height:7px;display:inline-block;border-radius:50%;background:var(--mint);margin-right:7px}h1{font-size:clamp(36px,4vw,60px);letter-spacing:-1.5px;line-height:1.3;font-weight:780;margin:22px 0}h1 span{color:var(--gold)}.hero-intro{font-size:18px;color:var(--muted);line-height:1.9;margin-bottom:29px}.start{padding:16px 25px;font-size:18px;display:flex;gap:30px;align-items:center;border-radius:14px;box-shadow:0 6px 30px #98e7d010}.start span{font-size:25px}.hero-tags{display:flex;flex-wrap:wrap;gap:17px;color:#a5b5cf;font-size:12px;margin-top:25px}.hero-tags span:before{content:'✧';color:var(--gold);margin-right:6px}.hero-art{position:relative}.hero-art img{width:100%;height:auto;display:block}.art-tag{position:absolute;right:8%;bottom:9%;font-size:12px;color:var(--mint);padding:10px 15px;border:1px solid #98e7d033;background:#10172b99;border-radius:20px}.address{grid-column:1/-1;border:1px solid var(--line);border-radius:20px;background:#18243b90;padding:22px 30px;display:grid;grid-template-columns:1fr auto;gap:10px 20px}.address>p{font-size:14px;margin:0;align-self:center}.address small{display:block;font-size:12px;color:var(--muted);margin-top:7px}.address-path{display:flex;align-items:center;gap:12px}.address-path button{background:transparent;border:0;color:var(--muted);padding:9px 14px}.address-path .active{background:#294138;color:var(--mint)}.address-path span{color:#6c7890}.address .address-caption{grid-column:1/-1;font-size:14px;line-height:1.7;color:var(--muted);border-top:1px solid var(--line);padding-top:14px;margin-top:5px}.explore{padding:32px 0 48px}.explore-top{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:26px}.explore-top h2{font-size:26px;margin:0}.explore-top .eyebrow{margin-bottom:8px}.explore-top>button{display:none}.learning-layout{display:grid;grid-template-columns:228px minmax(0,1fr);gap:26px}.station-nav{align-self:start;position:sticky;top:20px}.nav-caption{font-size:13px;font-weight:750;display:flex;justify-content:space-between;margin-bottom:18px}.nav-caption span{color:var(--mint)}.nav-group{font-size:10px;letter-spacing:1px;color:#8195b4;margin:18px 0 6px}.nav-item{display:flex;align-items:center;gap:10px;width:100%;background:transparent;border:1px solid transparent;text-align:left;font-size:13px;font-weight:500;padding:8px 10px;min-height:45px}.nav-item .number{font-size:11px;color:#8496b1;min-width:18px}.nav-item.active{background:#263a49;border-color:#98e7d033;color:var(--mint)}.nav-item.visited .number{color:var(--mint)}.nav-note{font-size:12px;line-height:1.9;color:#a5b4c9;margin:25px 9px}.lesson{min-width:0;background:#182239;border:1px solid #35405a;border-radius:23px;overflow:hidden;padding:26px}.lesson-heading{display:flex;justify-content:space-between;align-items:start;gap:10px}.lesson-heading .eyebrow{font-size:11px;margin-bottom:10px}.lesson-heading h2{font-size:clamp(23px,2.4vw,32px);margin:0;line-height:1.4;letter-spacing:-.5px}.star-button{border-radius:50%;padding:0;font-size:30px;color:var(--gold);width:48px;flex:none}.core{font-size:18px;line-height:1.7;color:#edf0fa;margin:17px 0 8px}.instruction{font-size:14px;color:var(--muted);line-height:1.7;margin:0 0 18px}.stage-wrap{position:relative;border-radius:16px;overflow:hidden;border:1px solid #394860;background:#0d162a}.stage-wrap canvas{width:100%;height:auto;display:block;aspect-ratio:900/530;touch-action:pan-y}.stage-wrap canvas.draggable{touch-action:none;cursor:grab}.stage-wrap canvas.dragging{cursor:grabbing}.stage-badge{position:absolute;top:13px;left:15px;color:#bacce1;background:#17253bbb;border:1px solid #53657d55;border-radius:99px;font-size:11px;padding:6px 11px;pointer-events:none}.controls{display:flex;flex-wrap:wrap;gap:10px;align-items:center;padding:18px 0 7px}.controls button{font-size:14px}.controls .selected{border-color:var(--mint);background:#284943;color:var(--mint)}.slider{flex-basis:100%;display:flex;align-items:center;gap:14px;font-size:14px;color:#d5deed;padding:6px 0}.slider span{min-width:100px}.slider input{width:100%;min-width:0;height:44px;accent-color:var(--mint);cursor:pointer}.slider output{font-variant-numeric:tabular-nums;min-width:46px;font-size:13px;color:var(--mint);text-align:right}.model-result{padding:12px 16px;background:#233c40;border:1px solid #98e7d029;border-radius:12px;font-size:16px;line-height:1.65;margin-top:8px;color:#d8f3e9}.extra{margin-top:14px}.planet-card{background:#202c43;border:1px solid #45516a;border-radius:16px;padding:20px}.planet-card-top{display:flex;align-items:center;justify-content:space-between;gap:12px}.planet-card h3{margin:0;font-size:23px}.planet-card .pill{font-size:12px;border:1px solid #5a6784;padding:6px 11px;border-radius:99px;color:var(--gold)}.planet-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:19px 0}.planet-grid dt{font-size:12px;color:var(--muted);margin-bottom:7px}.planet-grid dd{font-size:15px;line-height:1.6;margin:0}.planet-fact{font-size:16px;line-height:1.7;margin:0;color:var(--mint)}.model-note{font-size:12px;line-height:1.7;color:var(--muted);margin:12px 0 0}.discovery{display:flex;align-items:start;gap:14px;padding:19px 0;margin-top:10px;border-bottom:1px solid var(--line)}.discovery>span{color:var(--gold);font-size:22px;margin-top:2px}.discovery h3{font-size:14px;color:var(--gold);margin:0 0 9px}.discovery p{font-size:16px;line-height:1.85;color:#d0dbed;margin:0}.question{padding:20px 0 6px}.question h3{font-size:17px;line-height:1.7;margin:0 0 12px}.answers{display:flex;gap:9px;flex-wrap:wrap}.answers button{text-align:left;font-size:14px;line-height:1.6;min-height:48px}.feedback{font-size:15px;line-height:1.75;color:var(--mint);margin:12px 0 0}.feedback:empty{display:none}.lesson-bottom{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-top:23px;padding-top:18px;border-top:1px solid var(--line)}.lesson-bottom span{font-size:12px;color:var(--muted)}.lesson-bottom button{font-size:14px;padding:10px 14px}.safety{background:#483c28;border:1px solid #9b7c42;padding:17px;border-radius:13px;color:#ffe5ae;line-height:1.75;font-size:15px}.safety strong{display:block;font-size:18px;margin-bottom:7px}.facts-grid,.life-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.fact-card,.life-card{text-align:left;min-height:72px;padding:15px}.fact-card span{display:block;font-size:12px;color:var(--muted);margin-top:7px}.life-card{font-size:15px}.life-card.selected{border-color:var(--mint);color:var(--mint);background:#284943}.quiz-panel{padding:22px;background:#233047;border-radius:16px}.quiz-progress{font-size:13px;color:var(--gold);margin-bottom:18px;display:flex;justify-content:space-between;gap:10px}.quiz-panel h3{font-size:23px;line-height:1.6;margin:0 0 20px}.quiz-panel .answers{display:grid;gap:12px}.quiz-panel .answers button{font-size:17px;padding:15px}.quiz-actions{display:flex;gap:9px;margin-top:18px;flex-wrap:wrap}.badge{display:grid;place-items:center;text-align:center;padding:24px}.badge .badge-symbol{width:120px;height:120px;background:#f5ca7b;color:#182239;border-radius:50%;display:grid;place-items:center;font-size:65px;box-shadow:0 0 0 8px #f5ca7b19;margin-bottom:24px}.badge h3{font-size:28px;color:var(--gold);margin:0 0 12px}.badge p{font-size:16px;color:var(--muted);line-height:1.8}.parent-note{padding:30px 0 45px;border-top:1px solid var(--line);max-width:850px;margin:20px auto 0}.parent-note>p:first-child{font-size:12px;color:var(--mint);letter-spacing:2px}.parent-note h2{font-size:23px;line-height:1.6;margin:12px 0}.parent-note p{font-size:15px;line-height:1.85;color:var(--muted)}details{font-size:13px;color:var(--muted)}summary{cursor:pointer;padding:14px 0;min-height:44px}.source-links{display:flex;gap:14px;flex-wrap:wrap}.source-links a{padding:9px 0}footer{padding:24px 48px 30px;border-top:1px solid #ffffff16;display:flex;gap:15px;justify-content:space-between;font-size:12px;color:#9dacc2}dialog{color:var(--white);border:1px solid #8295a0;background:#20334a;padding:35px;border-radius:23px;width:calc(100% - 40px);max-width:440px;box-shadow:0 20px 80px #0008}dialog::backdrop{background:#050b1cbf}dialog h2{font-size:25px;margin:20px 0 12px}dialog p{font-size:18px;line-height:1.9;color:#dae7f0;margin-bottom:25px}.dialog-close{position:absolute;right:10px;top:10px;background:transparent;border:0;font-size:20px}.address-path button.active{animation:arrive .35s ease-out}.stars-reward{animation:arrive .4s ease-out}@keyframes arrive{from{opacity:.3;transform:scale(.9)}to{opacity:1;transform:scale(1)}}
@media(max-width:1000px){.header{padding:23px 28px}main{padding:0 28px}.learning-layout{grid-template-columns:190px minmax(0,1fr);gap:18px}.lesson{padding:21px}.hero{gap:8px}.hero-intro{font-size:16px}.planet-grid{grid-template-columns:repeat(2,1fr)}footer{padding:23px 28px}}
@media(max-width:800px){.hero{padding-top:30px;grid-template-columns:1.05fr 1fr}.hero h1{font-size:38px}.hero-art{margin-right:-12px}.hero-tags{gap:10px;font-size:11px}.address{padding:18px 20px;grid-template-columns:1fr}.address-path{gap:5px;justify-content:space-between}.address-path button{padding:8px 14px}.learning-layout{display:block}.station-nav{display:none;position:static;margin-bottom:20px;border:1px solid var(--line);padding:18px;border-radius:14px}.station-nav.open{display:block}.nav-item{font-size:15px}.nav-note{display:none}.explore-top>button{display:block;font-size:13px;white-space:nowrap}.explore-top h2{font-size:21px}.lesson{padding:22px}.lesson-heading h2{font-size:29px}.core{font-size:18px}.instruction{font-size:15px}.stage-badge{font-size:11px}}
@media(max-width:560px){.header{padding:16px 18px}.brand{font-size:18px;gap:9px}.brand-symbol{width:38px;height:38px;font-size:25px}.brand small{font-size:7px}.back-hub{font-size:12px}main{padding:0 16px}.hero{display:flex;flex-direction:column;align-items:stretch;padding:30px 0 24px;gap:8px}.hero-copy .eyebrow{font-size:11px}.hero h1{font-size:39px;line-height:1.3;margin:16px 0}.hero-intro{font-size:16px;line-height:1.85;margin:16px 0 20px}.start{font-size:17px;padding:14px 20px;justify-content:space-between;max-width:330px}.hero-tags{font-size:11px;margin-top:18px}.hero-art{margin:-8px auto 0;max-width:380px;align-self:center;min-height:250px}.hero-art img{max-height:300px}.art-tag{font-size:10px;bottom:4%}.address{display:block;margin-top:8px;padding:17px 16px;border-radius:16px}.address-path{margin:12px 0}.address-path button{font-size:14px;padding:8px 10px}.address .address-caption{font-size:13px}.explore{padding-top:25px}.explore-top{align-items:center;gap:10px;margin-bottom:20px}.explore-top h2{font-size:19px;max-width:205px}.explore-top .eyebrow{font-size:10px}.explore-top>button{font-size:12px;padding:10px}.lesson{padding:17px 13px;border-radius:18px}.lesson-heading h2{font-size:25px}.lesson-heading .eyebrow{font-size:10px;letter-spacing:1px}.core{font-size:17px;line-height:1.75;margin-top:15px}.instruction{font-size:14px;line-height:1.8}.star-button{width:44px;min-height:44px;font-size:27px}.stage-wrap{border-radius:12px;margin:0 -3px}.stage-badge{top:7px;left:8px;font-size:9px;padding:4px 8px}.controls{gap:8px;padding-top:14px}.controls button{font-size:13px;padding:9px 12px}.slider{gap:7px;font-size:13px}.slider span{min-width:83px}.slider output{font-size:12px;min-width:39px}.model-result{font-size:15px;padding:11px 12px}.planet-card{padding:15px}.planet-card h3{font-size:21px}.planet-grid{gap:14px 12px}.planet-grid dd{font-size:14px}.planet-fact{font-size:15px}.discovery p{font-size:16px;line-height:1.85}.discovery{gap:10px}.question h3{font-size:16px}.answers{display:grid;grid-template-columns:1fr;width:100%}.answers button{font-size:14px;padding:11px 13px;width:100%}.lesson-bottom button{font-size:13px;padding:9px 12px}.lesson-bottom span{font-size:11px}.safety{font-size:14px;padding:13px}.safety strong{font-size:16px}.facts-grid,.life-grid{gap:8px}.fact-card,.life-card{font-size:14px;padding:12px}.fact-card span{font-size:11px}.quiz-panel{padding:17px 13px}.quiz-panel h3{font-size:20px}.quiz-panel .answers button{font-size:15px}.parent-note{padding:18px 4px 30px}.parent-note h2{font-size:22px}footer{padding:22px 20px;flex-direction:column;gap:9px;font-size:11px}dialog{padding:29px 23px}dialog p{font-size:17px}}
@media(max-width:350px){.hero h1{font-size:34px}.hero-tags{gap:7px}.address-path button{padding:7px}.lesson-heading h2{font-size:22px}.explore-top h2{font-size:18px}.lesson-bottom{gap:5px}.lesson-bottom button{padding:9px}.controls button{font-size:12px;padding:9px 10px}.planet-card .pill{font-size:11px;padding:5px 8px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation:none!important;transition:none!important}}
.planet-select,.phase-select{display:flex;flex-wrap:wrap;gap:7px;flex-basis:100%}.prediction{flex-basis:100%;padding:14px;background:#20334a;border-radius:12px}.prediction p{font-size:15px;line-height:1.7;margin:0 0 10px}.prediction button{margin:0 7px 4px 0}.life-grid{width:100%}.eclipse-compare{display:grid;grid-template-columns:1fr 1fr;gap:13px}.eclipse-compare>div{background:#233047;border:1px solid #45516a;border-radius:13px;padding:17px}.eclipse-compare strong{color:var(--gold);font-size:18px}.eclipse-compare p{line-height:1.8;font-size:14px;color:#d4e0ee}.eclipse-compare button{font-size:13px;padding:9px}.hero-art[data-address="0"]{filter:brightness(.9)}.hero-art[data-address="1"]{filter:brightness(1.1)}.hero-art[data-address="2"] .art-tag,.hero-art[data-address="3"] .art-tag{color:var(--gold);border-color:var(--gold)}.hero-art{transition:filter .6s ease}.question[hidden]{display:none}
@media(max-width:400px){.eclipse-compare{gap:7px}.eclipse-compare>div{padding:12px 9px}.eclipse-compare p{font-size:12px}.eclipse-compare button{font-size:11px;padding:8px}}
.hero-viewport{overflow:hidden;border-radius:24px}.hero-viewport img{transform-origin:67% 53%;transition:transform 1.2s ease,opacity .8s ease}.hero-art[data-address="0"] .hero-viewport img{transform:scale(.82);opacity:.65}.hero-art[data-address="1"] .hero-viewport img{transform:scale(1);opacity:1}.hero-art[data-address="2"] .hero-viewport img,.hero-art[data-address="3"] .hero-viewport img{transform:scale(1.65)}.taiwan-inset{display:none;position:absolute;top:18%;right:5%;padding:18px;background:#17273beF;border:1px solid #98e7d088;border-radius:20px;align-items:center;gap:10px;box-shadow:0 8px 30px #0005}.taiwan-inset svg{width:54px;height:86px}.taiwan-inset span{font-size:13px;color:var(--mint)}.hero-art[data-address="3"] .taiwan-inset{display:flex;animation:arrive .5s ease-out}
@media(prefers-reduced-motion:reduce){.hero-viewport img{transition:none}}
.comparison-svg{width:100%;display:block;margin:9px 0}.light-pulse{animation:light-travel 2.4s linear infinite}@keyframes light-travel{from{transform:translateX(0);opacity:1}to{transform:translateX(73px);opacity:.1}}@media(prefers-reduced-motion:reduce){.light-pulse{animation:none}}

.reading-pane-overlay{display:none}@media(max-width:559px){.stage-wrap[data-scene="phases"] .reading-pane-overlay,.stage-wrap[data-scene="seasons"] .reading-pane-overlay,.stage-wrap[data-scene="solar"] .reading-pane-overlay,.stage-wrap[data-scene="lunar"] .reading-pane-overlay{display:block;position:absolute;left:0;right:0;bottom:0;touch-action:pan-y}.stage-wrap[data-scene="phases"] .reading-pane-overlay{top:46%}.stage-wrap[data-scene="seasons"] .reading-pane-overlay{top:40.4%}.stage-wrap[data-scene="solar"] .reading-pane-overlay,.stage-wrap[data-scene="lunar"] .reading-pane-overlay{top:58.2%}}