:root{color-scheme:light;--ink:#203344;--teal:#267d76;--coral:#ef806b;--paper:#f6f6ef;--line:rgba(32,51,68,.13);font-family:"PingFang SC","Hiragino Sans GB",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-synthesis:none;color:var(--ink)}
*{box-sizing:border-box}body{margin:0;background:#e6eceb}button,a,select{-webkit-tap-highlight-color:transparent}button,select{font:inherit;color:inherit}button{cursor:pointer}button:disabled,select:disabled{cursor:wait;opacity:.4}button:focus-visible,select:focus-visible,a:focus-visible,canvas:focus-visible{outline:3px solid #e17959;outline-offset:4px}button{border:0}button,select{touch-action:manipulation}#app{position:relative;width:100%;height:100svh;min-height:620px;overflow:hidden}#scene{position:absolute;inset:0;width:100%;height:100%;display:block;touch-action:none;outline:none}.wash{pointer-events:none;position:absolute;inset:0;background:linear-gradient(90deg,rgba(233,242,241,.83),rgba(233,242,241,.45) 22%,transparent 50%),linear-gradient(0deg,rgba(234,241,239,.92),transparent 25%)}.masthead{position:absolute;top:32px;left:42px;right:42px;display:flex;align-items:center;justify-content:space-between;pointer-events:none}.brand{display:flex;align-items:center;gap:12px;color:var(--ink);text-decoration:none;pointer-events:auto}.brand svg{width:37px;height:32px;fill:none;stroke:currentColor;stroke-width:3;stroke-linejoin:round}.brand>span{font-size:21px;font-weight:900;letter-spacing:-.8px;line-height:1}.brand small{display:block;margin-top:9px;font-size:9px;font-weight:600;letter-spacing:4px}.edition{display:flex;align-items:center;gap:8px;font-size:11px;letter-spacing:1px}.status-dot{width:6px;height:6px;border-radius:50%;background:#268477;box-shadow:0 0 0 4px #ffffff3d}.edition-num{margin-left:18px;padding-left:18px;border-left:1px solid #20334444;font-size:10px;font-weight:700;letter-spacing:2px}.intro{position:absolute;left:58px;top:22%;width:330px;pointer-events:none}.eyebrow{margin:0 0 20px;font-size:9px;letter-spacing:2.1px;font-weight:700}.intro h1{margin:0;font-size:64px;line-height:1.17;letter-spacing:-3.5px;font-weight:850}.intro h1 span{color:var(--teal)}.description{font-size:12px;line-height:1.9;margin:22px 0 25px;color:#415e69}.gear-story{display:flex;gap:15px;align-items:center;margin:0 0 25px}.gear-story>span{font-size:34px;font-weight:300;letter-spacing:-2px;color:#6b858e}.gear-story strong{font-size:13px;letter-spacing:1px}.gear-story p{font-size:10px;margin:6px 0 0;color:#607b85}.primary{min-height:50px;min-width:190px;padding:0 20px;display:inline-flex;align-items:center;justify-content:space-between;gap:28px;background:var(--ink);color:#f6f6ef;border-radius:6px;font-size:12px;font-weight:650;letter-spacing:1px;pointer-events:auto;transition:background .15s,transform .15s}.primary:hover{background:#286466}.primary:active{transform:translateY(1px)}.primary>span:last-child{font-size:24px;font-weight:400}.preview-note{font-size:9px;color:#607882;margin:13px 0 0;line-height:1.6}.scene-caption{position:absolute;right:9%;bottom:27%;display:flex;gap:12px;align-items:center;pointer-events:none}.caption-line{height:1px;width:32px;background:#20334470}.scene-caption>span:nth-child(2){font-size:15px;font-weight:650}.scene-caption small{display:block;margin-top:4px;letter-spacing:1.8px;font-size:8px;font-weight:500}.scene-caption>span:last-child{border-left:1px solid #20334438;padding-left:12px;font-size:10px;color:#4e6671}.view-tools{position:absolute;right:34px;top:45%;display:flex;flex-direction:column;gap:10px}.round-button{width:42px;height:42px;border:1px solid #ffffffa1;background:#eef5f073;border-radius:50%;backdrop-filter:blur(8px);font-size:15px}.round-button:hover{background:#ffffffc4}.control-dock{position:absolute;left:38px;right:38px;bottom:49px;display:flex;justify-content:space-between;align-items:center;gap:20px;border:1px solid #ffffffa8;border-radius:12px;background:#f8faf4de;backdrop-filter:blur(16px);padding:18px 22px;box-shadow:0 12px 35px #294b5710}.control-section{display:flex;flex-direction:column;gap:10px}.control-label{font-size:9px;font-weight:650;letter-spacing:1.5px;color:#607881}.segmented{display:flex;padding:3px;background:#e8eeeb;border-radius:5px}.segmented button{height:37px;min-width:64px;padding:0 15px;background:transparent;border-radius:4px;font-size:12px;font-weight:600}.segmented button[aria-pressed=true]{background:var(--ink);color:#fff;box-shadow:0 2px 3px #20334412}.motion-section{flex:1;border-left:1px solid var(--line);padding-left:23px}.motion-options{display:flex;gap:4px;flex-wrap:wrap}.motion-options button{min-height:42px;min-width:47px;padding:0 12px;background:transparent;border-radius:5px;white-space:nowrap;font-size:11px}.motion-options button:hover{background:#e7eeeb}.motion-options button[aria-pressed=true]{background:#d6e8e2;color:#205f59;font-weight:700}.select-section select{border:0;border-bottom:1px solid var(--line);background:transparent;min-height:41px;width:96px;font-size:11px;cursor:pointer;border-radius:0;padding:0 19px 0 0}.light-section select{width:63px}.hint{position:absolute;left:42px;right:42px;bottom:20px;display:flex;gap:20px;align-items:center;font-size:9px;color:#617981;letter-spacing:.35px;pointer-events:none}.keyboard-hint b{font-weight:400;margin:0 8px}.mountain-coordinate{margin-left:auto;font-size:8px;letter-spacing:2px}#metrics{position:absolute;right:32px;top:96px;padding:12px 16px;background:#203344dd;color:#eef4ef;border-radius:7px;font:10px/1.9 ui-monospace,monospace;white-space:pre;pointer-events:none}.loading{position:absolute;inset:0;background:#e9efeb;display:flex;flex-direction:column;align-items:center;justify-content:center;z-index:20}.loading-mark{font-size:100px;font-weight:900;font-style:italic;letter-spacing:-10px}.loading-mark span{color:var(--teal);font-weight:300;margin-left:6px}.loading p{font-size:12px;margin:18px 0;color:#506f76}.loading-track{height:2px;width:140px;background:#cedbd6}.loading-track i{display:block;width:5%;height:100%;background:var(--teal);transition:width .15s}.error{position:absolute;inset:0;z-index:30;background:#e9efebf5;display:grid;place-items:center;text-align:center;padding:24px}.error h2{font-size:27px}.error p:not(.eyebrow){font-size:13px;line-height:1.8;max-width:360px;margin:20px auto}.error .primary{justify-content:center}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}[hidden]{display:none!important}#app[data-view=follow] .intro{opacity:0;visibility:hidden}#app[data-view=follow] .wash{background:linear-gradient(0deg,#eaf1efe8,transparent 26%)}#app[data-view=follow] .scene-caption{right:85px;bottom:180px}.intro{transition:opacity .25s,visibility .25s}
@media(min-width:1550px){.intro{left:6%;top:24%;width:380px}.intro h1{font-size:78px}.control-dock{left:5%;right:5%;bottom:57px;padding:23px 27px}.hint{left:5%;right:5%;bottom:26px}.motion-options button{min-width:60px}.scene-caption{right:12%}}
@media(max-width:1100px){.masthead{left:28px;right:28px;top:25px}.intro{left:35px;top:23%;width:250px}.intro h1{font-size:50px;letter-spacing:-2px}.description{margin:18px 0}.gear-story{margin-bottom:18px}.control-dock{left:24px;right:24px;gap:14px;padding:15px 17px}.motion-section{padding-left:15px}.motion-options{gap:0}.motion-options button{min-width:40px;padding:0 8px}.select-section select{width:78px}.light-section select{width:53px}.hint{left:28px;right:28px}.scene-caption{right:8%;bottom:27%}.eyebrow{font-size:8px;letter-spacing:1.5px}}
@media(max-width:760px){#app{min-height:700px}.masthead{top:max(22px,env(safe-area-inset-top));left:23px;right:23px}.brand>span{font-size:18px}.brand svg{width:30px}.edition{font-size:9px;letter-spacing:0}.edition-num{display:none}.intro{top:106px;left:25px;width:210px}.intro .eyebrow{font-size:7px;letter-spacing:1px;margin-bottom:12px}.intro h1{font-size:38px;letter-spacing:-1.5px;line-height:1.1}.description,.gear-story,.preview-note{display:none}.intro .primary{margin-top:16px;min-height:40px;min-width:145px;font-size:10px;padding:0 13px;gap:15px}.intro .primary>span:last-child{font-size:19px}.control-dock{left:13px;right:13px;bottom:max(36px,env(safe-area-inset-bottom));padding:13px 14px;display:grid;grid-template-columns:1fr auto auto;gap:12px 17px;border-radius:11px}.gear-section{grid-column:1}.control-section{gap:5px}.control-label{font-size:8px}.segmented{width:max-content}.segmented button{height:37px;min-width:50px;padding:0 11px;font-size:11px}.motion-section{grid-column:1/-1;grid-row:2;border-left:0;border-top:1px solid var(--line);padding:10px 0 0}.motion-options{justify-content:space-between}.motion-options button{min-height:42px;min-width:44px;padding:0 9px}.select-section{grid-row:1}.hint{left:23px;right:23px;bottom:14px;font-size:8px;justify-content:center}.keyboard-hint,.mountain-coordinate{display:none}.scene-caption{right:28px;bottom:230px;gap:8px}.scene-caption>span:nth-child(2){font-size:12px}.scene-caption small{font-size:7px}.caption-line{width:16px}.scene-caption>span:last-child{font-size:9px}.view-tools{right:20px;top:38%;gap:8px}.round-button{width:39px;height:39px}.wash{background:linear-gradient(180deg,#e9f2f170,transparent 40%),linear-gradient(0deg,#eaf1efd9,transparent 40%)}#metrics{right:18px;top:81px;font-size:9px;padding:9px 11px}#app[data-view=follow] .scene-caption{right:28px;bottom:225px}}
@media(max-height:650px) and (min-width:761px){#app{min-height:540px}.intro{top:20%;}.intro h1{font-size:43px}.description{margin:12px 0;font-size:11px}.gear-story{margin-bottom:13px}.preview-note{display:none}.control-dock{bottom:40px;padding:11px 17px}.hint{bottom:15px}.scene-caption{bottom:26%}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{transition:none!important}}
@media(max-width:760px){.intro{width:calc(100% - 50px);top:105px}.intro .eyebrow{font-size:7px;margin-bottom:10px}.intro h1{font-size:30px;letter-spacing:-1.2px}.intro h1 br{display:none}.intro .primary{position:fixed;left:23px;bottom:236px;margin:0;min-height:40px;min-width:143px}}
.control-dock .segmented button{height:48px;min-height:48px}.control-dock .motion-options button{min-height:48px;min-width:48px}.control-dock select{min-height:48px}.view-tools .round-button{width:48px;height:48px}
@media(max-width:760px){.intro .primary{min-height:48px}}
@media(max-width:760px){.gear-section{grid-row:1;grid-column:1}.select-section{grid-column:2}.light-section{grid-column:3}}
.control-dock .select-section select{width:90px;padding-right:4px}.control-dock .light-section select{width:72px}

.secondary{display:block;pointer-events:auto;min-height:48px;background:transparent;border-bottom:1px solid #20334455;font-size:11px;margin-top:7px;padding:0 4px;color:var(--ink)}
#app[data-mode=review] .intro,#app[data-mode=practice] .intro{display:none}#app[data-mode=review] .scene-caption,#app[data-mode=practice] .scene-caption{display:none}
#app[data-mode=review] .motion-section,#app[data-mode=practice] .motion-section{display:none}
.review-panel{position:absolute;top:100px;left:38px;width:365px;padding:16px 18px;background:#f8faf4e8;border:1px solid #fff9;border-radius:10px;backdrop-filter:blur(10px)}
.review-heading{display:flex;justify-content:space-between;gap:12px;align-items:center;font-size:11px}.review-heading strong{font-size:12px}.review-heading span{font-size:9px;white-space:nowrap;color:#607881}
#timeline{width:100%;height:48px;margin:3px 0;accent-color:var(--teal);cursor:pointer;touch-action:none}
.review-actions{display:flex;align-items:center;gap:5px;justify-content:space-between}.review-actions button,.review-actions select{min-width:48px;min-height:48px;padding:0 9px;background:#e1ece6;border-radius:5px;font-size:10px}.review-actions label{font-size:9px}.review-actions select{border:0;padding:0 2px;background:transparent}
#axis-readout{display:block;margin-top:12px;font:10px/1.5 ui-monospace,monospace;color:#56727c}#record-status{font-size:10px;margin:7px 0 0;line-height:1.5;color:#35786f}
.practice-panel{position:absolute;left:38px;right:100px;bottom:185px;pointer-events:none}.practice-panel p{font-size:12px}.practice-panel>div{display:flex;gap:10px}.practice-panel button{pointer-events:auto;touch-action:none;min-height:64px;padding:12px 20px;background:#f4f8f0e8;border:1px solid #fff;border-radius:8px;font-size:12px}.practice-panel button small{font-size:9px;display:block;margin-top:5px;color:#637b83}.practice-panel button.held{background:#203344;color:white}
@media(max-width:760px){.review-panel{top:90px;left:16px;right:16px;width:auto;padding:12px}.review-heading strong{font-size:11px}.review-actions button{font-size:10px}.intro .secondary{position:fixed;bottom:184px;left:23px}.practice-panel{left:16px;right:16px;bottom:185px}.practice-panel>div{gap:6px;flex-wrap:wrap}.practice-panel button{padding:9px 13px;flex:1;min-width:70px}.practice-panel button small{font-size:8px}#app[data-mode=review] .control-dock,#app[data-mode=practice] .control-dock{display:flex;gap:8px}.review-panel #axis-readout{font-size:9px}}
@media(min-width:761px) and (max-height:800px){.intro{top:18%}.intro h1{font-size:50px;line-height:1.12}.description{margin:14px 0}.gear-story{margin-bottom:12px}.intro .eyebrow{margin-bottom:14px}.preview-note{font-size:8px}}