:root{font-family:Arial,Helvetica,sans-serif;color:#292e31;background:#f6f4ef;color-scheme:light;--copper:#9b4f2b;--line:#d9d6ce}*{box-sizing:border-box}body{margin:0}button,input,select,textarea{font:inherit}button,select,input,textarea,a{-webkit-tap-highlight-color:transparent}a{color:inherit}header{height:82px;display:flex;align-items:center;gap:30px;border-bottom:1px solid var(--line);padding:0 4vw}.brand{font-size:23px;font-weight:700;letter-spacing:-.07em;text-decoration:none}.brand span{letter-spacing:.13em;font-size:10px;font-weight:500;margin-left:14px}.back{margin-left:auto;text-decoration:none;font-size:13px}main{max-width:1600px;margin:auto;padding:36px 4vw 22px}.intro{display:flex;justify-content:space-between;gap:40px;align-items:end;margin-bottom:28px}.eyebrow{font-size:10px;letter-spacing:.14em;color:var(--copper);line-height:1.6;margin:0 0 13px}h1{font-weight:400;font-size:clamp(36px,4.1vw,66px);letter-spacing:-.065em;line-height:1.05;margin:0}.intro-copy{font-size:14px;line-height:1.65;color:#666963;max-width:370px;margin:0}.study-layout{display:grid;grid-template-columns:minmax(0,1fr) 310px;gap:36px}.experience{min-width:0}.view-tabs{display:grid;grid-template-columns:repeat(3,1fr);border-bottom:1px solid var(--line)}button{cursor:pointer;min-height:44px;color:inherit;border:1px solid var(--line);background:transparent;padding:10px 14px;border-radius:3px}button:disabled{cursor:default;opacity:.5}.view-tabs button{border:0;border-radius:0;border-bottom:2px solid transparent;display:flex;align-items:center;gap:12px;text-align:left;padding:14px 12px;font-size:13px}.view-tabs button span{color:#898a81;font-size:10px}.view-tabs b{font-weight:500}.view-tabs button[aria-pressed=true]{border-bottom-color:var(--copper);color:var(--copper)}.stage-wrap{position:relative;background:radial-gradient(ellipse at 50% 35%,#fff 0%,#f4f2eb 75%)}#engine-study-host{height:555px;position:relative;overflow:hidden}#engine-study-host canvas{display:block;width:100%;height:100%;touch-action:none}#engine-poster{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;opacity:.65}#engine-study-host[data-state=ready] #engine-poster{display:none}#engine-study-host:not([data-state=ready]) canvas{visibility:hidden}#engine-loading{position:absolute;z-index:2;inset:auto 30px 60px;text-align:center;font-size:13px;line-height:1.6;background:#f6f4efe8;padding:12px;border-radius:4px}#engine-loading[hidden]{display:none}.stage-caption{position:absolute;top:20px;left:22px;right:22px;display:flex;justify-content:space-between;font-size:10px;color:#7e827d;pointer-events:none}.stage-caption span:last-child{letter-spacing:.14em}.home-button{position:absolute;bottom:18px;left:18px;background:#fcfaf6df;border-color:#dfdcd3;font-size:12px}.stage-hint{position:absolute;bottom:33px;right:20px;color:#7e827d;font-size:11px;pointer-events:none}.cycle-panel{padding:20px 0 0;border-top:1px solid var(--line)}.cycle-top{display:flex;align-items:center;gap:18px;flex-wrap:wrap}.play{background:#30383b;color:#fff;border-color:#30383b;min-width:188px}.cylinder-label,.flows-label{display:flex;gap:8px;align-items:center;font-size:12px}.cylinder-label select{padding:5px 10px;background:transparent}.flows-label{margin-left:auto}input[type=checkbox]{accent-color:var(--copper);width:18px;height:18px;margin:0}.phase-buttons{display:grid;grid-template-columns:repeat(4,1fr);gap:6px;margin-top:18px}.phase-buttons button{font-size:12px;border:0;background:#ebe8e0;color:#676c6b}.phase-buttons button[aria-pressed=true]{background:#e8d8c8;color:#703a20}.scrub-label{display:flex;justify-content:space-between;margin-top:17px;font-size:11px;color:#74766f}output{font-variant-numeric:tabular-nums}input[type=range]{width:100%;height:32px;margin:0;accent-color:var(--copper)}#cycle-description{font-size:13px;line-height:1.6;margin:0;min-height:42px;max-width:710px}.micro{font-size:11px;line-height:1.6;color:#777c76;margin:9px 0}.study-layout aside{padding-top:11px}h2{font-size:27px;font-weight:400;letter-spacing:-.04em;margin:0 0 22px}aside label{display:block;font-size:11px;line-height:1.5;margin-bottom:7px}select{min-height:44px;border:1px solid #ccc8be;border-radius:3px;padding:10px 12px;background:#faf9f5;color:#30383b}#study-part{width:100%;font-size:13px}#study-part-info{font-size:14px;line-height:1.65;color:#666c68;margin:19px 0 25px}h3{font-size:12px;font-weight:600;margin:0 0 10px}#study-services{list-style:none;padding:0;margin:0 0 25px;font-size:13px;line-height:1.6}#study-services li{position:relative;padding:6px 0 6px 17px}#study-services li:before{content:'↗';position:absolute;left:0;color:var(--copper)}textarea{width:100%;resize:vertical;min-height:88px;border:1px solid #ccc8be;border-radius:3px;background:#faf9f5;color:#30383b;padding:11px;font-size:13px;line-height:1.5}textarea::placeholder{color:#92938b}.request{display:block;padding:16px 14px;background:var(--copper);color:white;text-align:center;font-size:13px;text-decoration:none;border-radius:3px;margin-top:17px}.note{font-size:11px;line-height:1.65;color:#777c76;margin-top:13px}footer{border-top:1px solid var(--line);margin-top:32px;padding-top:20px;color:#777c76;font-size:11px;line-height:1.7}.footer-top{display:flex;justify-content:space-between;gap:25px}.footer-top details{max-width:500px}summary{cursor:pointer;min-height:28px}.model-tabs{display:flex;gap:8px;margin:12px 0}.model-tabs button{font-size:11px}.model-tabs button[aria-pressed=true]{background:#333d40;color:#fff}#study-scope{max-width:1020px}#authored-animation{padding:20px 0}#authored-animation label{display:block;font-size:12px;margin-top:12px}:focus-visible{outline:3px solid #b9784f;outline-offset:3px}[hidden]{display:none!important}@media(min-width:1500px){#engine-study-host{height:620px}}@media(max-width:1000px){.intro{align-items:start;gap:25px}.intro-copy{max-width:300px}.study-layout{grid-template-columns:minmax(0,1fr) 280px;gap:24px}#engine-study-host{height:510px}.stage-hint{bottom:72px;left:18px}.flows-label{margin-left:0}}@media(max-width:780px){header{height:68px;gap:15px}.brand span{display:none}.back{font-size:11px}main{padding-top:27px}.intro{display:block;margin-bottom:22px}.intro-copy{margin-top:16px;max-width:500px;font-size:13px}.study-layout{grid-template-columns:1fr;gap:25px}#engine-study-host{height:480px}.stage-hint{bottom:34px;left:auto}.study-layout aside{padding-top:24px;border-top:1px solid var(--line)}.footer-top{display:block}.footer-top details{margin-top:14px}#cycle-description{min-height:0}h2{margin-bottom:16px}}@media(max-width:450px){header{padding:0 5vw;gap:10px}main{padding:26px 5vw 20px}h1{font-size:38px}.view-tabs button{padding:13px 7px;font-size:12px;gap:7px}#engine-study-host{height:415px}.stage-caption{font-size:9px;left:14px;right:14px}.stage-hint{font-size:10px;left:16px;bottom:71px}.home-button{left:14px}.cycle-top{gap:10px;justify-content:space-between}.play{min-width:180px;font-size:13px}.flows-label{width:100%;min-height:35px}.phase-buttons{gap:4px;margin-top:10px}.phase-buttons button{font-size:11px;padding:8px 5px}.intro-copy{font-size:13px}}

/* Keep controls outside the moving geometry. */
.stage-wrap{padding-bottom:60px}.home-button{bottom:8px}.stage-hint{bottom:25px}@media(max-width:450px){.stage-wrap{padding-bottom:88px}.home-button{bottom:12px}.stage-hint{bottom:66px}}


/* Cinematic mechanical stage: graphite depth within the light editorial page. */
.stage-wrap{background:radial-gradient(ellipse at 46% 38%,#3b454d 0%,#212930 46%,#12191e 100%)}.stage-caption{color:#a6b0b7}.stage-caption span:last-child{color:#b98763}.stage-hint{color:#a5afb6}.home-button{background:#222d34;color:#e1e5e8;border-color:#4a545a}#engine-loading{background:#222d34e8;color:#e1e5e8}.view-tabs button[aria-pressed=true]{background:#eee8df}