:root{--purple:#4d0099;--bg:#f6f5fa;--muted:#71687e;--line:#e7e0ef;--dot:#8200e8}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:#282132;font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif}header{height:65px;padding:0 5vw;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:12px;color:var(--purple)}.mark{font-size:28px}header b{font-size:19px;letter-spacing:1px}#header-status{margin-left:auto;color:var(--muted);font-size:13px}main{max-width:1120px;margin:auto;padding:26px 38px}h1{font-size:36px;line-height:1.5;margin:12px 0 22px}h2{font-size:27px;margin:8px 0 20px}p{line-height:1.85;margin:10px 0}.eyebrow{font-size:13px;letter-spacing:2px;color:var(--purple);font-weight:bold}.muted{color:var(--muted);font-size:14px}.hero{max-width:820px;margin:38px auto 0}.hero .lead{font-size:20px}.rule{height:3px;width:46px;background:var(--purple);margin-bottom:25px}.actions{display:flex;gap:12px;align-items:center;margin-top:28px;flex-wrap:wrap}button,.button{font:inherit;border:0;border-radius:9px;padding:13px 26px;background:var(--purple);color:white;cursor:pointer;font-weight:600;text-decoration:none;display:inline-block}button:hover,.button:hover{filter:brightness(1.12)}button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid #ad86d5;outline-offset:4px}button:disabled{background:#ded9e5;color:#948a9e;cursor:default;filter:none}.secondary{background:white;color:var(--purple);border:1px solid #cdbbdf}.quiet{background:transparent;color:var(--muted);padding:10px;font-size:13px}input[type=text]{font:inherit;width:360px;max-width:100%;padding:13px;border:1px solid #c9bed5;border-radius:8px;background:white;margin-top:8px}label{display:block;margin-top:22px}.notice{border-left:3px solid var(--purple);padding:10px 18px;background:#eee9f5;margin:22px 0;line-height:1.8}.error{color:#b32139;font-size:14px}.person{width:200px;height:200px;object-fit:contain;float:right;margin:10px 35px}.axis-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;text-align:center;margin:15px 0}.axis-grid .illustration{height:230px;margin:auto}.axis-grid p{margin:5px}.illustration{position:relative;flex:none;height:100%;aspect-ratio:1}.illustration.ud{aspect-ratio:640/717}.illustration.lr{aspect-ratio:446/453}.illustration.fb{aspect-ratio:1232/1277}.illustration>img,.illustration>svg{display:block;width:100%;height:100%}.point{position:absolute;transform:translate(-50%,-50%);border:0;background:transparent;padding:0;border-radius:50%;width:27px;height:27px;min-width:0;cursor:pointer;display:grid;place-items:center;z-index:2}button.point:hover{background:#8100e81b;filter:none}.point:focus-visible{outline:2px solid var(--purple);outline-offset:1px}.point.selected::after,.point.demo-selected::after{content:'';width:var(--fill,12px);height:var(--fill,12px);border-radius:50%;background:var(--dot);box-shadow:0 0 0 2px #f7f5ff}.point.center.selected::after,.point.center.demo-selected::after{opacity:.6;width:23px;height:16px}.trial-heading{text-align:center}.trial-heading h2{font-size:21px;margin:8px 0}.trial-heading p{font-size:14px;line-height:1.4;margin:8px 0}.trial-heading .unit{font-size:13px;color:var(--purple);font-weight:600}.stage{height:min(52vh,430px);min-height:330px;max-width:850px;margin:8px auto 0;position:relative;display:flex;align-items:center;justify-content:center}.stage .illustration{height:calc(100% - 64px)}.word{position:absolute;color:#d4a900;font-size:27px;font-weight:700;letter-spacing:3px;white-space:nowrap;max-width:94%}.word.top{top:0;left:50%;transform:translateX(-50%)}.word.bottom{bottom:0;left:50%;transform:translateX(-50%)}.word.left{left:35px;top:50%;transform:translateY(-50%)}.word.right{right:35px;top:50%;transform:translateY(-50%)}.word.attention{font-size:22px;letter-spacing:0;color:var(--purple)}.trial-footer{border-top:1px solid var(--line);padding-top:14px;display:flex;align-items:center;gap:20px}.trial-footer .response{flex:1;text-align:center;color:var(--muted);font-size:14px}.progress{height:3px;background:#e6dfed;margin:16px 0 0}.progress>div{height:100%;background:var(--purple)}.trial-subnote{text-align:center;margin:4px 0 12px;font-size:13px;color:var(--muted)}.file-name{font-family:monospace;font-size:14px;overflow-wrap:anywhere;background:white;padding:12px;border:1px solid var(--line);border-radius:6px}.checkline{display:flex;align-items:flex-start;gap:10px;font-size:14px;line-height:1.6}.checkline input{margin-top:5px;accent-color:var(--purple)}.completion{max-width:740px;margin:35px auto}.completion h1{color:var(--purple)}#storage-warning{padding:8px 20px;background:#fff1cf;font-size:13px}#device-warning{display:none} .intro-stage{height:300px}.small{font-size:13px} @media(max-width:959px),(max-height:649px){#device-warning{display:flex;position:fixed;inset:0;background:var(--bg);z-index:100;align-items:center;justify-content:center;flex-direction:column;padding:40px;text-align:center}#device-warning strong{font-size:24px}}@media(min-height:850px){main{padding-top:38px}.hero{margin-top:60px}}@media(prefers-reduced-motion:no-preference){button{transition:background .15s}}

/* Front/back rings follow the supplied perspective ellipses exactly. */
.fb .point{width:var(--ring-w);height:var(--ring-h);border-radius:50%}
.fb .point.selected::after,.fb .point.demo-selected::after{width:82%;height:72%;border-radius:50%;box-shadow:none;background:#7900e8}
.fb .point.center.selected::after,.fb .point.center.demo-selected::after{width:87%;height:77%;opacity:.55}

/* Layout revision: explicit unselected overview and selected demonstrations. */
main{max-width:1180px;padding:clamp(20px,3.2vh,34px) 44px}
#app>section{min-width:0}
.hero{max-width:980px;margin:clamp(20px,5vh,54px) auto 0}
h1{font-size:clamp(29px,2.7vw,36px);margin:12px 0 20px}
.hero .lead{font-size:19px}
.welcome-layout{display:grid;grid-template-columns:1.2fr 1fr;gap:54px;align-items:center}
.welcome-entry{padding-left:34px;border-left:1px solid var(--line)}
.welcome-copy .notice{font-size:14px;margin-top:28px}
.welcome-copy .lead{line-height:1.95}
.welcome-entry label:first-child{margin-top:0}
.welcome-entry label .muted{display:block;margin-top:6px}
.welcome-entry input[type=text]{width:100%}
.welcome-entry .checkline{margin-top:24px}
.person{width:240px;height:270px;margin:0 0 20px 40px}
.instruction-page{min-height:calc(100vh - 65px - 2 * clamp(20px,3.2vh,34px));display:flex;flex-direction:column}
.page-heading h2{font-size:28px;margin:10px 0 14px}
.page-heading p{font-size:16px;margin:0;line-height:1.75;color:#5e546b}
.axis-grid{gap:44px;margin:26px 0 20px;align-items:start}
.axis-grid figure{margin:0;display:flex;flex-direction:column;align-items:center;gap:18px}
.axis-grid .illustration{height:clamp(230px,calc(100vh - 350px),330px);margin:0 auto;max-width:100%}
.axis-grid figcaption{line-height:1.75;text-align:center;font-size:16px;width:100%;min-height:56px}
.overview-grid figcaption{font-weight:600;font-size:19px;min-height:34px}
.page-actions{margin-top:auto;padding-top:12px;padding-bottom:4px;display:flex;gap:12px}
.rules-page{max-width:930px;margin:0 auto}
.instructions{padding-left:25px;margin:22px 0 24px;font-size:18px;line-height:1.85}
.instructions li{padding-left:10px;margin-bottom:22px}
.instructions li::marker{color:var(--purple);font-weight:600}
span.point{pointer-events:none;cursor:default;background:transparent}
/* Scale the central scene to the available height, keeping controls on screen. */
.trial-heading h2{font-size:22px;line-height:1.5;margin:9px 0 12px}
.trial-heading p{line-height:1.65;margin:6px 0}
.stage{height:clamp(282px,calc(100vh - 338px),490px);min-height:0;margin:12px auto 8px;max-width:930px}
.stage .illustration{height:calc(100% - 68px)}
.trial-footer{padding-top:16px;min-height:65px}
.trial-subnote{margin:8px 0 14px}
.progress{margin-top:14px}
.intro-stage{height:clamp(245px,calc(100vh - 380px),410px)}
#app[data-screen="intro"] .trial-heading h1{margin:8px 0 12px}
#app[data-screen="intro"] .actions{margin-top:18px}
#app[data-screen="complete"] .completion{margin:12px auto;max-width:820px}
#app[data-screen="complete"] .notice{margin:16px 0}
#app[data-screen="complete"] .actions{margin-top:18px}
@media(max-height:720px){
 main{padding-top:18px;padding-bottom:18px}
 .instruction-page{min-height:calc(100vh - 101px)}
 .axis-grid{margin-top:22px;gap:32px}
 .axis-grid figure{gap:14px}
 .axis-grid .illustration{height:230px}
 .page-heading p{font-size:15px}
 .instructions{font-size:17px;margin-top:18px}
 .instructions li{margin-bottom:18px}
 .hero{margin-top:20px}
 .trial-heading h2{font-size:20px;margin:6px 0 8px}
 .trial-heading p{font-size:13px;line-height:1.5;margin:5px 0}
 .trial-subnote{margin:5px 0 10px}
 .stage{height:calc(100vh - 319px)}
 .intro-stage{height:calc(100vh - 360px)}
 .trial-footer{padding-top:12px}
 #app[data-screen="complete"] .completion{margin:0 auto}
 #app[data-screen="complete"] h1{margin:8px 0 10px}
 #app[data-screen="complete"] p{line-height:1.6;margin:8px 0}
}
.axis-grid .illustration{height:min(clamp(230px,calc(100vh - 350px),330px),calc((100vw - 176px)/3))}
.trial,#app[data-screen="intro"]>section{height:calc(100vh - 65px - 2 * clamp(20px,3.2vh,34px));display:grid;grid-template-rows:auto minmax(0,1fr) auto auto auto}
.trial .stage,#app[data-screen="intro"] .stage{height:100%;margin:0 auto;width:100%;min-height:0}
#app[data-screen="intro"]>section{grid-template-rows:auto minmax(0,1fr) auto auto}
@media(max-height:720px){.trial,#app[data-screen="intro"]>section{height:calc(100vh - 101px)}.axis-grid .illustration{height:230px}}

/* v1.0.3: common picture-relative spacing on every task and unit example. */
.highlight-back{background:#ffe75b;color:#282132;font-weight:800;padding:2px 5px;border-radius:3px;box-decoration-break:clone}
.stage{container-type:size;display:grid;grid-template-columns:minmax(120px,1fr) auto minmax(120px,1fr);grid-template-rows:32px minmax(0,1fr) 32px;gap:20px;align-items:center;justify-content:normal;--scene-height:min(calc(100cqh - 104px),calc(100cqw - 320px))}
.stage .illustration{grid-column:2;grid-row:2;height:var(--scene-height);width:auto;justify-self:center;align-self:center;max-width:none}
.stage .word{position:static;transform:none!important;max-width:none;white-space:nowrap;line-height:32px;margin:0;letter-spacing:3px;font-size:27px}
.stage .word.left{grid-column:1;grid-row:2;justify-self:end}
.stage .word.right{grid-column:3;grid-row:2;justify-self:start}
.stage .word.top{grid-column:2;grid-row:1;justify-self:center;align-self:end}
.stage .word.bottom{grid-column:2;grid-row:3;justify-self:center;align-self:start}
.stage .word.attention{font-size:22px;letter-spacing:0;grid-column:1 / -1}
#app[data-screen="intro"] .stage .word{font-size:19px;letter-spacing:1px}
.rest-page{max-width:800px;margin-top:clamp(25px,9vh,90px)}
/* Raster artwork remains at native resolution; the two rebuilt axes are vectors. */
.illustration>img{image-rendering:auto;object-fit:contain}

.illustration{container-type:inline-size}
.axis-label{position:absolute;transform:translate(-50%,-50%);font-weight:600;color:#141414;line-height:1;pointer-events:none;font-size:5.3cqw}
.ud-up{left:49.53125%;top:8.7866%}.ud-down{left:49.53125%;top:92.329%}
.lr-left{left:8.296%;top:66.1%}.lr-right{left:91.704%;top:66.1%}
.point{width:var(--ring-w);height:var(--ring-h)}
.point.selected::after,.point.demo-selected::after{width:80%;height:80%;box-shadow:none;background:#8000e8}
.point.center.selected::after,.point.center.demo-selected::after{width:86%;height:76%;opacity:.55}

/* Semantic focus is shown consistently above every practice and formal trial. */
.highlight-morality{background:#fff200;color:#282132;font-weight:800;padding:0 2px;box-decoration-break:clone;-webkit-box-decoration-break:clone}
.trial-heading .intro-prompt{font-size:20px;font-weight:700;line-height:1.5}
@media(max-height:720px){.trial-heading .intro-prompt{font-size:18px}.rules-page .instructions li{margin-bottom:14px}}

/* Chinese location reminder matches the English task pages. */
html[lang="zh-CN"] #app[data-screen="intro"]>section{grid-template-rows:auto minmax(0,1fr) auto}
.position-note{color:#282132}

.comprehension-page{max-width:940px;margin:auto}
.comprehension-question{border:1px solid var(--line);border-radius:10px;background:#fff;padding:12px 16px;margin:18px 0}
.comprehension-question legend{font-weight:600;font-size:16px;line-height:1.5;padding:0 6px;max-width:100%}
.comprehension-options{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px 20px}
.comprehension-options label{margin:0;display:flex;align-items:flex-start;gap:9px;cursor:pointer;font-size:14px;line-height:1.5}
.comprehension-options input{accent-color:var(--purple);margin:4px 0 0;flex-shrink:0}
.comprehension-page .actions{margin-top:18px}