:root{color-scheme:light;--paper:#f8f6f1;--surface:#f4f1ea;--ink:#57564f;--muted:#969287;--gold:#aa9876;--edge:#e7e1d6;--serif:"Songti SC","STSong","Noto Serif CJK SC",serif;--sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif}
*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);font-size:13px;-webkit-font-smoothing:antialiased}main{width:min(1120px,calc(100% - 96px));margin:64px auto 88px;display:grid;gap:48px}button,input,select{font:inherit;color:inherit}button,canvas,input,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:focus-visible,input:focus-visible,select:focus-visible,canvas:focus-visible{outline:2px solid var(--gold);outline-offset:4px}[hidden]{display:none!important}.work-block{min-width:0;padding:36px 38px;background:var(--paper);border:1px solid rgba(255,255,255,.85);border-radius:24px;box-shadow:12px 12px 32px #dedbd338,-12px -12px 32px #ffffffde}h2{margin:0 0 28px;font-family:var(--serif);font-weight:400;font-size:24px;letter-spacing:.22em;color:#69624f}.dimension-row{display:grid;grid-template-columns:100px minmax(0,1fr) 36px;align-items:center;gap:20px;margin-bottom:20px}.dimension-name{width:100%;min-width:0;border:0;background:transparent;padding:10px 0;letter-spacing:.06em;border-bottom:1px solid transparent;text-overflow:ellipsis}.dimension-name:hover,.dimension-name:focus{border-bottom-color:var(--edge)}.curve-shell{min-width:0;height:120px;border-radius:15px;background:var(--surface);box-shadow:inset 4px 4px 10px #d6d1c749,inset -4px -4px 10px #fff;overflow:hidden}.curve-editor{display:block;width:100%;height:100%;touch-action:none;user-select:none;-webkit-user-select:none}.symbol{width:36px;height:36px;display:grid;place-items:center;line-height:1;padding:0;border:1px solid #ffffffd9;border-radius:50%;background:var(--paper);box-shadow:3px 3px 7px #d7d2c77a,-3px -3px 7px white;font-size:24px;font-weight:300}.symbol:hover{filter:brightness(1.02)}.symbol:active{box-shadow:inset 2px 2px 5px #d7d2c77a,inset -2px -2px 5px white}.add{color:#66856b;margin:8px auto 0}.remove{color:#b16761}.point-delete{position:fixed;z-index:10;width:44px;height:44px;background:#faf5ef;transform:translate(-50%,-100%);box-shadow:3px 6px 16px #8074652b,-2px -2px 8px white}.viewport{width:100%;height:380px;min-width:0;overflow:hidden;border-radius:17px;background:var(--paper);box-shadow:inset 3px 3px 11px #d6d1c73d,inset -3px -3px 11px white}.viewport canvas{display:block;width:100%;height:100%;touch-action:none;cursor:grab}.viewport canvas:active{cursor:grabbing}.controls{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:27px 32px;margin-top:30px}.field{display:flex;flex-direction:column;gap:13px;min-width:0}.field-header{display:flex;align-items:center;justify-content:space-between;gap:8px}.field span{color:#7e796d;letter-spacing:.04em}.field output{font-size:12px;color:#aa9876;font-variant-numeric:tabular-nums}input[type=range]{width:100%;height:22px;margin:0;background:transparent;appearance:none;-webkit-appearance:none;cursor:pointer;touch-action:pan-y}input[type=range]::-webkit-slider-runnable-track{height:5px;border-radius:10px;background:#eae5da;box-shadow:inset 1px 1px 3px #c8c1b580,0 1px 1px #fff}input[type=range]::-webkit-slider-thumb{appearance:none;-webkit-appearance:none;width:17px;height:17px;margin-top:-6px;border-radius:50%;border:1px solid #fefcf8;background:#c1b397;box-shadow:2px 2px 4px #b8b0a35c,-2px -2px 4px #fff}input[type=range]::-moz-range-track{height:5px;border-radius:10px;background:#eae5da}input[type=range]::-moz-range-thumb{height:17px;width:17px;border-radius:50%;background:#c1b397;border:1px solid #fff}input:disabled{opacity:.35;cursor:default}select{width:100%;border:0;border-radius:9px;padding:11px;background:var(--paper);box-shadow:inset 2px 2px 6px #d6d1c74d,inset -2px -2px 6px white}#mesh-count{align-self:end;padding-bottom:10px;color:var(--muted);font-size:12px;font-variant-numeric:tabular-nums}#workflow-error{margin:0;color:#a75f56;line-height:1.8}
@media(min-width:1600px){main{width:min(1320px,calc(100% - 140px))}.viewport{height:440px}.curve-shell{height:135px}}
@media(max-width:700px){main{width:calc(100% - 32px);margin:24px auto 40px;gap:26px}.work-block{padding:25px 18px;border-radius:20px}h2{font-size:21px;margin-bottom:24px}.dimension-row{grid-template-columns:66px minmax(0,1fr) 28px;gap:8px;margin-bottom:16px}.dimension-name{font-size:12px}.curve-shell{height:112px;border-radius:12px}.symbol{width:28px;height:34px;font-size:22px}.add{width:44px;height:44px}.viewport{height:300px;border-radius:13px}.controls{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px 20px;margin-top:26px}.field{font-size:12px;gap:11px}.point-delete{width:44px;height:44px}input[type=range]{height:30px}.dimension-row .remove{min-height:44px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}

.diameter-control{margin-top:34px;padding-top:28px;border-top:1px solid var(--edge)}

.block-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:28px}.block-heading h2{margin:0;white-space:nowrap}.construction-options{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:10px}.method-switch{display:flex;gap:4px;padding:4px;flex-shrink:0;border-radius:12px;background:var(--surface);box-shadow:inset 2px 2px 6px #d6d1c74d,inset -2px -2px 6px white}.method-switch button{min-height:38px;padding:0 16px;border:1px solid transparent;border-radius:9px;background:transparent;color:var(--muted);font-size:12px;letter-spacing:.04em}.method-switch button[aria-pressed=true]{background:var(--paper);border-color:#ffffffce;color:#8d7956;box-shadow:2px 2px 5px #d3cdbd66,-2px -2px 5px #fff}.method-switch button:active{box-shadow:inset 2px 2px 4px #d3cdbd66}
@media(max-width:700px){.block-heading{flex-direction:column;align-items:stretch;margin-bottom:24px;gap:16px}.block-heading h2{font-size:19px;letter-spacing:.12em}.construction-options{justify-content:flex-start;gap:8px}.method-switch{flex:1 1 220px;gap:0;padding:3px}.method-switch button{flex:1;min-height:44px;padding:0 9px;font-size:11px;letter-spacing:0}}
.sample-switch{flex:0 0 auto;align-self:flex-end}
.block-heading.dimension-heading{flex-direction:row;align-items:center}

/* Sample is a physical toggle: engaged is inset, released is raised. */
.sample-switch{padding:0;background:transparent;box-shadow:none;border-radius:12px}
.sample-switch button{min-height:44px;padding:0 20px;background:var(--paper);border:1px solid #fff;border-radius:12px;color:#8a8273;box-shadow:4px 4px 10px #d3cdbd80,-4px -4px 10px #fff;transition:background .2s,color .2s,box-shadow .2s}
.sample-switch button[aria-pressed=true]{background:#eee9df;border-color:#e2d9c9;color:#79623e;box-shadow:inset 3px 3px 7px #cfc6b77d,inset -3px -3px 7px #fff}
.sample-switch button:active{box-shadow:inset 3px 3px 7px #cfc6b77d,inset -3px -3px 7px #fff}

/* The new copy presents one uninterrupted construction, on the same paper. */
body{min-height:100dvh}main{margin-bottom:132px}#input-workflow>.work-block:not([aria-labelledby="dimension-title"]){display:none}.dimension-description{margin:-4px 0 32px;color:#969084;font-size:13px;line-height:2;max-width:720px;letter-spacing:.04em}.action-dock{position:fixed;z-index:20;bottom:max(28px,env(safe-area-inset-bottom));left:50%;transform:translateX(-50%);display:flex;justify-content:center;pointer-events:none}.ceremony-action,.soft-button{pointer-events:auto;min-width:164px;min-height:50px;padding:14px 28px;border:1px solid #fffdf9;border-radius:30px;color:#8d7957;background:#f7f4ed;box-shadow:6px 6px 18px #d2cbbd80,-6px -6px 18px #fff;letter-spacing:.13em;font-size:14px;transition:opacity .7s,transform .7s,box-shadow .2s}.ceremony-action:active,.soft-button:active{box-shadow:inset 3px 3px 9px #d2cbbd80,inset -3px -3px 9px #fff}.ceremony-action.disappearing{opacity:0;transform:translateY(12px);pointer-events:none}.ceremony-action:disabled{cursor:wait}.action-dock::before{content:"";position:absolute;inset:-18px -32px;z-index:-1;background:#f8f6f1b3;filter:blur(18px);border-radius:50%}#ceremony-stage{position:fixed;inset:0;overflow:hidden;background:var(--paper);isolation:isolate}#render-layers,#construction-view,#render-layers>canvas{position:absolute;inset:0;width:100%;height:100%;display:block}#render-layers>canvas{touch-action:none;transition:opacity .1s;cursor:grab}#construction-view{pointer-events:none;z-index:3}#stage-title{position:absolute;z-index:5;left:0;right:0;top:48px;margin:0;text-align:center;font-size:23px;color:#8b7d63;letter-spacing:.24em;pointer-events:none;transition:opacity .45s}#return-input{position:absolute;top:44px;left:48px;z-index:6}.text-button{border:0;background:transparent;color:#a0947f;font-size:12px;letter-spacing:.1em;padding:14px;cursor:pointer}body.constructing{overflow:hidden}body.constructing main{pointer-events:none}.frosted{color:var(--ink);background:#f8f6f1ba;border:1px solid #ffffffc9;border-radius:28px;box-shadow:0 24px 100px #746b5733,inset 1px 1px 0 #ffffffbf;backdrop-filter:blur(28px) saturate(.8);-webkit-backdrop-filter:blur(28px) saturate(.8);opacity:0;transform:translateY(12px);transition:opacity .55s,transform .55s;outline:0}.frosted.visible{opacity:1;transform:translateY(0)}.frosted::backdrop{background:#d6d0c22b;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}.consent{width:min(480px,calc(100vw - 40px));padding:40px}.consent h2{margin-bottom:20px;font-size:22px}.consent p{font-size:14px;line-height:2;color:#878071;margin:0}.consent-actions{display:flex;justify-content:flex-end;gap:16px;margin-top:32px}.consent-actions button{min-width:108px;min-height:46px;font-size:13px;padding:12px 20px}.ar-experience{width:95vw;height:95dvh;max-width:none;max-height:none;padding:0;overflow:hidden}.ar-experience #ar-viewport{position:absolute;inset:0;overflow:hidden;border-radius:inherit;background:#f8f6f15c}.ar-experience canvas{width:100%!important;height:100%!important;display:block;touch-action:none;pointer-events:none}.ar-experience #ar-status{position:absolute;bottom:24px;left:24px;max-width:calc(100% - 150px);margin:0;color:#fff;font-size:13px;line-height:1.8;background:#504a3b5c;padding:10px 16px;border-radius:18px;backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px)}.ar-experience #ar-close{position:absolute;right:22px;bottom:24px;min-width:88px;min-height:44px;font-size:13px;padding:12px 22px}.frosted button:focus-visible{outline-offset:5px}.ar-experience[data-error=true] #ar-status{color:#82654f;background:#f8f6f1d9}#workflow-error:not([hidden]){position:fixed;z-index:30;bottom:100px;left:50%;transform:translateX(-50%);padding:12px 20px;background:#faf6efed;border-radius:14px;max-width:90vw}
@media(max-width:700px){.dimension-description{font-size:12px;margin-bottom:26px}.action-dock{bottom:max(20px,env(safe-area-inset-bottom))}.ceremony-action{min-width:154px;min-height:48px}#stage-title{top:34px;font-size:21px}#return-input{left:8px;top:70px}.consent{padding:30px 24px;border-radius:24px}.consent-actions{gap:12px}.consent-actions button{min-width:96px}.ar-experience{border-radius:22px}.ar-experience #ar-status{bottom:84px;left:14px;right:14px;max-width:none;font-size:12px;padding:10px 14px}.ar-experience #ar-close{right:14px;bottom:18px}}
@media(prefers-reduced-motion:reduce){.frosted,.ceremony-action,#stage-title{transition-duration:.12s}}

.back-button{position:absolute;z-index:8;display:grid;place-items:center;width:44px;height:44px;padding:10px;border:1px solid #ffffffda;border-radius:50%;background:#f8f6f1cc;color:#978364;box-shadow:3px 3px 10px #cfc7b75c,-3px -3px 10px #fff9;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);cursor:pointer;touch-action:manipulation}.back-button svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}.back-button:active{box-shadow:inset 2px 2px 6px #cfc7b775,inset -2px -2px 6px #fff}.back-button:focus-visible{outline:2px solid var(--gold);outline-offset:4px}#return-input{top:40px;left:40px}.ar-experience .back-button,.consent .back-button{top:18px;left:18px}.consent{padding-top:82px}@media(max-width:700px){#return-input{top:24px;left:16px}.ar-experience .back-button,.consent .back-button{top:14px;left:14px}.consent{padding-top:76px}}

[hidden]{display:none!important}.account-locked #input-workflow,.account-locked .action-dock,.account-locked #ceremony-stage{visibility:hidden;pointer-events:none}#account-gate{position:fixed;inset:0;z-index:90;display:grid;place-items:center;padding:24px;background:var(--paper);overflow:auto}#account-form{width:min(440px,100%);padding:42px}#account-form h2{font-size:24px}#account-form .soft-button{margin-top:14px;width:100%}#account-error{color:#ac6e62;font-size:13px;line-height:1.8}#account-bar{display:flex;align-items:center;gap:16px;color:#8c8272;font-size:12px;margin-bottom:-28px}#current-name{margin-right:auto;overflow-wrap:anywhere}#save-status{max-width:36ch;line-height:1.6}#account-bar .text-button{padding:10px 0;white-space:nowrap}.narrative-layout{display:grid;grid-template-columns:minmax(250px,.8fr) minmax(0,1.8fr);gap:38px}#story-guide{padding-right:28px;border-right:1px solid var(--edge)}fieldset{border:0;padding:0;margin:0;min-width:0}.timeline-fields{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-bottom:20px}.timeline-fields label,#point-context label{display:grid;gap:9px;font-size:12px;color:#8b8272}input[type=text],input[type=number],textarea{font:inherit;color:var(--ink);min-width:0;max-width:100%}#account-name,.timeline-fields input,textarea{border:1px solid #ffffffad;border-radius:12px;background:#f3f0e9;box-shadow:inset 3px 3px 7px #d5cfc24d,inset -3px -3px 7px #fff9;padding:12px;outline:none}.timeline-fields input{width:100%;font-size:14px}textarea{width:100%;line-height:1.9;resize:vertical;font-size:13px}input:focus-visible,textarea:focus-visible{outline:1px solid #b3a283;outline-offset:3px}#story-question{font-size:14px;line-height:2;color:#85765e;margin:4px 0 18px;white-space:pre-wrap}.guide-actions{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:18px}.guide-actions .soft-button{min-width:100px;min-height:44px;padding:10px 20px;font-size:13px}.quiet{font-size:12px;color:#999184;line-height:1.9}.axis-label{margin:0 36px 15px 0;display:flex;justify-content:space-between;font-size:11px;color:#a39b8d;letter-spacing:.1em}.curve-column{min-width:0}.narrative-layout .dimension-row{grid-template-columns:72px minmax(0,1fr) 28px;gap:12px}.narrative-layout .curve-shell{height:116px}.narrative-layout .dimension-name{font-size:13px}#event-fields{margin:16px 0 0}#point-context{margin-top:20px;padding-top:22px;border-top:1px solid var(--edge)}#point-earlier{white-space:pre-wrap}#story-history p{font-size:12px;line-height:1.9;color:#9b9386;overflow-wrap:anywhere;border-top:1px solid var(--edge);padding-top:12px;white-space:pre-wrap}.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}button:disabled{opacity:.55;cursor:wait}@media(max-width:780px){.narrative-layout{grid-template-columns:1fr;gap:30px}#story-guide{border-right:0;border-bottom:1px solid var(--edge);padding:0 0 24px}#story-history{display:flex;gap:14px;overflow:auto}#story-history p{min-width:180px;max-height:100px;overflow:auto}#account-bar{margin-bottom:-8px;gap:12px;flex-wrap:wrap}.narrative-layout .dimension-row{grid-template-columns:58px minmax(0,1fr) 28px;gap:8px}.narrative-layout .dimension-name{font-size:12px}#account-form{padding:30px}}
.narrative-layout>*{min-width:0}.timeline-fields{grid-template-columns:repeat(2,minmax(0,1fr))}.timeline-fields label{min-width:0}#story-history{max-width:100%}@media(max-width:780px){.narrative-layout{grid-template-columns:minmax(0,1fr)}}