:root{--paper:#f4f3ec;--ink:#22372d;--muted:#747c72;--line:#d8dbcf;--green:#607555;--accent:#be6549;font-family:Inter,"PingFang SC","Microsoft YaHei",system-ui,sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none;scroll-behavior:smooth;scroll-padding-top:24px}*{box-sizing:border-box}body{margin:0}button,a,input{-webkit-tap-highlight-color:transparent}button{font:inherit}button,a{touch-action:manipulation}button{cursor:pointer}a{color:inherit;text-decoration:none}button:focus-visible,a:focus-visible,input:focus-visible,#viewer:focus-visible{outline:2px solid #657b52;outline-offset:5px}[hidden]{display:none!important}.header,main,footer{max-width:1440px;margin:auto;padding-left:64px;padding-right:64px}.header{height:112px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.wordmark{display:flex;align-items:center;gap:15px}.wordmark strong{display:flex;align-items:baseline;gap:13px;font-size:26px;font-weight:600;letter-spacing:3px}.wordmark strong span{font-size:12px;letter-spacing:2px;font-weight:500}.mark{display:block;width:29px;height:31px;position:relative}.mark i{position:absolute;width:19px;height:19px;border:2px solid var(--ink);transform:skewY(-22deg)}.mark i:nth-child(1){left:0;top:5px}.mark i:nth-child(2){left:10px;top:0}.mark i:nth-child(3){left:10px;top:11px}nav{display:flex;gap:35px;align-items:center;font-size:13px}nav>a:first-child{color:var(--muted)}.nav-cta{border:1px solid #87917d;border-radius:30px;padding:11px 19px;display:flex;gap:29px}.nav-cta:hover{background:#e5e8db}.intro{display:grid;grid-template-columns:1fr 280px;align-items:end;padding-top:65px;padding-bottom:48px;gap:70px}.eyebrow{font-size:11px;letter-spacing:2px;color:var(--green);display:flex;align-items:center;gap:10px}.eyebrow>span{height:6px;width:6px;background:var(--green);border-radius:50%}h1{font-size:clamp(40px,4vw,62px);line-height:1.28;letter-spacing:-2px;font-weight:500;margin:24px 0 20px}h1>span{font-family:"Songti SC",STSong,serif;color:var(--green)}.intro-text{font-size:14px;line-height:1.9;color:var(--muted);margin:0}.intro-note{border-left:1px solid var(--line);padding:0 0 2px 25px}.note-index{font-size:11px;color:#929b8d}.intro-note p{font-size:17px;font-family:"Songti SC",STSong,serif;line-height:1.8;margin:15px 0 20px}.intro-note a{font-size:12px;display:flex;justify-content:space-between;max-width:160px}.experience{display:grid;grid-template-columns:minmax(0,1fr) 332px;background:#fafaf5;border:1px solid var(--line);border-radius:5px;overflow:hidden}.viewer-col{min-width:0;background:#e9ecdf;position:relative}.viewer-heading{display:flex;justify-content:space-between;align-items:center;padding:28px 30px 0;position:relative;z-index:1}.section-label{font-size:9px;letter-spacing:2px;color:#808b78}h2,h3{font-weight:500}.viewer-heading h2{font-size:18px;margin:9px 0 0;letter-spacing:1px}.preview-tag{font-size:10px;border:1px solid #bdc7b1;padding:5px 9px;color:#748568}.viewer{width:100%;height:510px;position:relative;overflow:hidden;touch-action:none;background:radial-gradient(ellipse at 48% 37%,#f2f3e9 0%,#e9ecdf 58%,#e2e7d7 100%)}#scene{width:100%;height:100%;display:block;touch-action:none;cursor:grab}#scene:active{cursor:grabbing}.viewer-corner{position:absolute;width:13px;height:13px;pointer-events:none;border-color:#aab89b;border-style:solid}.corner-tl{top:28px;left:30px;border-width:1px 0 0 1px}.corner-br{bottom:40px;right:30px;border-width:0 1px 1px 0}.viewer-meta{position:absolute;left:30px;right:30px;bottom:21px;display:flex;justify-content:space-between;color:#849178;font-size:8px;letter-spacing:1.6px;pointer-events:none}.viewer-footer{border-top:1px solid #d2dac7;display:flex;align-items:center;justify-content:space-between;padding:12px 24px;min-height:58px}.viewer-footer p{display:flex;gap:9px;font-size:10px;color:#79856f;align-items:center;margin:0}.viewer-footer p>span{font-size:16px}.viewer-footer i{display:block;height:3px;width:3px;background:#9aa58f;border-radius:50%;margin:0 3px}.view-tools{display:flex;align-items:center;gap:6px}.view-tools button{width:27px;height:28px;background:transparent;border:1px solid #c8d1bc;color:#607052;display:grid;place-items:center;font-size:15px;border-radius:2px}.view-tools button:hover{background:#dce4d1}.view-tools .home-view{width:auto;display:flex;gap:15px;padding:0 10px;font-size:10px}.controls{padding:29px 28px 22px;background:#fafaf5;border-left:1px solid var(--line)}.control-title h3{font-size:20px;margin:10px 0 11px;letter-spacing:-.4px}.control-title p{color:#90988b;font-size:11px;line-height:1.9;margin:0 0 29px}.dimension{display:flex;justify-content:space-between;align-items:center;font-size:12px;margin-bottom:13px}.dimension>span{display:flex;align-items:center;gap:8px}.dimension small{font-size:9px;color:#a4ad9c;margin-left:3px}.axis{display:inline-block;width:5px;height:5px;border-radius:50%;background:#a87662}.axis-y{background:#839474}.axis-z{background:#82989e}.dimension output{font-size:20px;line-height:1;font-variant-numeric:tabular-nums}.dimension em{font-size:10px;font-style:normal;color:#9ba391;margin-left:2px}input[type=range]{width:100%;display:block;margin:0;height:17px;accent-color:#6e835b;cursor:pointer;appearance:none;background:transparent}input[type=range]::-webkit-slider-runnable-track{height:2px;background:#cdd4c5;border-radius:3px}input[type=range]::-webkit-slider-thumb{appearance:none;height:13px;width:13px;border-radius:50%;background:#6e835b;margin-top:-5.5px;border:3px solid #fafaf5;box-shadow:0 0 0 1px #6e835b}input[type=range]::-moz-range-track{height:2px;background:#cdd4c5}input[type=range]::-moz-range-thumb{height:9px;width:9px;border-radius:50%;background:#6e835b;border:2px solid #fafaf5}.range-ends{display:flex;justify-content:space-between;font-size:9px;color:#a1aa97;margin:7px 0 23px}.presets{display:flex;gap:5px;margin:0 0 21px}.presets button{background:transparent;border:1px solid #d4dbc9;border-radius:3px;padding:7px 8px;font-size:9px;color:#839176;white-space:nowrap}.presets button:hover{background:#e6ebdd;color:var(--ink)}.presets button.active{background:#e4eadc;border-color:#aab79a;color:#526a44}.display-options{display:flex;justify-content:space-between;gap:6px;border-top:1px solid var(--line);padding-top:20px;margin-bottom:24px}.toggle{border:0;display:flex;align-items:center;gap:7px;padding:0;font-size:10px;background:transparent;color:#7e8975;white-space:nowrap}.toggle-track{display:block;width:24px;height:13px;border:1px solid #c4cdb9;border-radius:9px;position:relative;background:#e9ede3}.toggle-track i{display:block;position:absolute;width:7px;height:7px;left:2px;top:2px;border-radius:50%;background:#acb69f;transition:transform .2s}.toggle[aria-pressed=true] .toggle-track{background:#788e65;border-color:#788e65}.toggle[aria-pressed=true] .toggle-track i{background:#f6f7ee;transform:translateX(11px)}.model-stats{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--line);padding-top:15px;gap:16px}.model-stats span{display:block;font-size:9px;color:#9ba591;margin-bottom:5px}.model-stats b{font-size:22px;font-weight:500;font-variant-numeric:tabular-nums}.model-stats small{font-size:10px;font-weight:400;color:#8f9c82}.model-stats .outer-size{grid-column:1/-1;border-top:1px dashed #dfe4d7;padding-top:12px}.outer-size b{font-size:16px;letter-spacing:1px}.scope-note{font-size:9px;color:#9ca691;line-height:1.8;border-top:1px solid var(--line);padding-top:13px;margin:14px 0 0}.model-caption{display:flex;justify-content:space-between;padding:17px 0 0;font-size:10px;color:#87927c;gap:20px}.model-caption span:first-child{display:flex;align-items:center;gap:8px}.model-caption i{height:4px;width:4px;display:inline-block;border-radius:50%;background:var(--green)}#render-status{font-size:9px;letter-spacing:.5px;color:#9aa48d}.loading{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;gap:10px;font-size:11px;color:#718161;background:#e9ecdfd9;z-index:3;transition:opacity .2s}.spinner{height:13px;width:13px;border:1px solid #b8c3ab;border-top-color:#6a8058;border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.error-panel{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;z-index:4;background:#e9ecdf;font-size:13px}.error-panel button{border:1px solid #899b76;background:transparent;padding:8px 14px;color:#5f774d}.idea{display:grid;grid-template-columns:1fr 1fr;gap:100px;border-top:1px solid var(--line);margin-top:88px;padding:64px 0 55px}.idea-heading .eyebrow{margin:0 0 22px;font-size:10px}.idea-heading h2{font-size:32px;line-height:1.6;letter-spacing:-.5px;margin:0;font-family:"Songti SC",STSong,serif}.idea-copy{padding-top:24px}.idea-copy p{color:#858e7d;font-size:13px;line-height:2.1;margin:0 0 18px}.principles{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:34px 0 40px}.principles article{display:flex;gap:20px;padding:0 30px;border-right:1px solid var(--line)}.principles article:first-child{padding-left:0}.principles article:last-child{border:0;padding-right:0}.step{font-size:11px;color:#a1ad94;padding-top:3px}.principles h3{font-size:16px;margin:0 0 10px}.principles p{font-size:11px;line-height:1.95;color:#939d88;margin:0;max-width:250px}.panel-legend{display:flex;gap:19px;font-size:9px;color:#7b8b6e;margin-top:15px}.panel-legend span{display:flex;gap:6px;align-items:center}.panel-legend i{width:7px;height:7px;border-radius:1px;background:#78916e}.panel-legend .legend-l{background:#bd866c}.panel-legend .legend-v{background:#849b9e}.closing{display:flex;align-items:center;justify-content:space-between;padding:58px 0}.closing p{font-size:22px;line-height:1.8;font-family:"Songti SC",STSong,serif;margin:0}.closing a{display:flex;gap:36px;align-items:center;font-size:12px;border-bottom:1px solid #7d8f6e;padding-bottom:8px}footer{display:flex;justify-content:space-between;gap:20px;padding-top:25px;padding-bottom:35px;border-top:1px solid var(--line);color:#a2aa99;font-size:10px}.footer-brand{font-size:17px;color:#6a7a5d;letter-spacing:3px}.footer-brand span{font-size:8px;letter-spacing:1.5px;margin-left:9px}@media(min-width:1500px){.viewer{height:550px}.intro{padding-top:85px;padding-bottom:60px}}@media(max-width:1100px){.header,main,footer{padding-left:35px;padding-right:35px}.experience{grid-template-columns:minmax(0,1fr) 300px}.controls{padding-left:22px;padding-right:22px}.viewer{height:510px}.viewer-heading{padding-left:24px;padding-right:24px}.intro{gap:30px;grid-template-columns:1fr 210px}.idea{gap:50px}.principles article{padding:0 20px;gap:14px}}@media(max-width:800px){.header{height:86px}.wordmark strong{font-size:22px}.wordmark strong span{display:none}nav{gap:20px;font-size:11px}.nav-cta{padding:9px 14px;gap:16px}.intro{padding:42px 0 34px;grid-template-columns:1fr 170px;gap:25px}h1{font-size:40px;letter-spacing:-1px}.intro-text{font-size:12px}.intro-note{padding-left:17px}.intro-note p{font-size:14px}.intro-note a{font-size:10px}.experience{grid-template-columns:1fr}.controls{border-left:0;border-top:1px solid var(--line);padding:27px 28px}.viewer{height:440px}.control-title p{margin-bottom:20px}.sliders{display:grid;grid-template-columns:repeat(3,1fr);column-gap:24px}.dimension{grid-row:1}.sliders input{grid-row:2}.range-ends{grid-row:3;margin-bottom:0}.dimension:nth-of-type(2){grid-column:2}.dimension:nth-of-type(3){grid-column:3}.presets{margin:24px 0}.display-options{justify-content:flex-start;gap:40px;padding-top:17px;margin-bottom:20px}.model-stats{grid-template-columns:1fr 1fr 2fr;gap:20px}.model-stats .outer-size{grid-column:auto;border:0;padding:0}.outer-size b{font-size:16px}.scope-note{margin-top:20px}.idea{margin-top:65px;padding:44px 0;gap:35px}.idea-heading h2{font-size:26px}.idea-copy{padding-top:12px}.idea-copy p{font-size:11px}.principles article{padding:0 18px}.principles h3{font-size:14px}.principles p{font-size:10px}.closing p{font-size:20px}.model-caption{font-size:9px}.viewer-footer p{font-size:10px}}@media(max-width:520px){.header,main,footer{padding-left:20px;padding-right:20px}.header{height:74px}.wordmark{gap:10px}.wordmark strong{font-size:21px;letter-spacing:2px}.mark{transform:scale(.85);transform-origin:left center;width:25px}nav>a:first-child{display:none}.intro{display:block;padding:35px 0 27px}.intro-note{display:none}h1{font-size:38px;line-height:1.35;margin:19px 0 18px}.eyebrow{font-size:9px}.intro-text{font-size:11px;line-height:1.9}.viewer-heading{padding:22px 18px 0}.viewer-heading h2{font-size:16px}.section-label{font-size:8px}.preview-tag{font-size:8px;padding:4px 7px}.viewer{height:350px}.viewer-meta{left:18px;right:18px;font-size:6px;letter-spacing:1px;bottom:17px}.corner-tl{left:18px;top:20px}.corner-br{right:18px;bottom:34px}.viewer-footer{padding:10px 13px}.viewer-footer p{font-size:8px;gap:5px}.view-tools .home-view{font-size:8px;gap:6px;padding:0 7px}.view-tools button{width:23px;height:25px}.controls{padding:22px 19px}.control-title{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between}.control-title .section-label{width:100%}.control-title h3{font-size:18px;margin-top:10px;margin-bottom:18px}.control-title p{display:none}.sliders{column-gap:17px}.dimension{font-size:10px;margin-bottom:13px}.dimension>span{gap:5px}.dimension small{font-size:7px;margin:0}.dimension output{font-size:19px}.dimension em{font-size:8px}.range-ends{font-size:8px}.presets{margin:20px 0}.presets button{padding:8px 12px;font-size:9px}.display-options{gap:28px}.model-stats{gap:12px}.model-stats b{font-size:19px}.model-stats span{font-size:8px}.outer-size b{font-size:12px;letter-spacing:0;display:block;padding-top:5px}.scope-note{font-size:8px}.model-caption{line-height:1.7;display:block;padding-top:12px}.model-caption span:first-child{font-size:9px}#render-status{display:block;font-size:8px;margin-top:4px}.idea{display:block;margin-top:43px;padding:33px 0}.idea-heading h2{font-size:27px;line-height:1.55}.idea-heading .eyebrow{margin-bottom:17px}.idea-copy{padding-top:24px}.idea-copy p{font-size:12px;line-height:2;margin-bottom:12px}.principles{grid-template-columns:1fr;padding:10px 0}.principles article,.principles article:first-child,.principles article:last-child{padding:22px 0;border-right:0;border-bottom:1px solid var(--line);gap:22px}.principles article:last-child{border-bottom:0}.principles h3{font-size:15px}.principles p{font-size:11px;max-width:none}.panel-legend{margin-top:10px}.closing{padding:35px 0;gap:20px}.closing p{font-size:17px;line-height:1.8}.closing a{font-size:10px;gap:14px}footer{flex-wrap:wrap;align-items:center;padding-top:23px;padding-bottom:28px;gap:16px;font-size:8px}footer>span:last-child{width:100%;font-size:7px}.footer-brand{font-size:15px}.footer-brand span{font-size:7px}}@media(prefers-reduced-motion:reduce){:root{scroll-behavior:auto}.spinner{animation:none}.toggle-track i{transition:none}}

@media(min-width:801px){.viewer-col{display:flex;flex-direction:column}.viewer{flex:1;min-height:510px}.viewer-footer{flex:none}}

/* Maintain readable text on the ivory and sage surfaces. */
:root{--muted:#5d6958}.note-index,.section-label,.preview-tag,.viewer-meta,.viewer-footer p,.control-title p,.dimension small,.dimension em,.range-ends,.presets button,.toggle,.model-stats span,.model-stats small,.scope-note,.model-caption,#render-status,.idea-copy p,.step,.principles p,.panel-legend,footer{color:#596650}