:root{--paper:#f4f3ed;--ink:#26332c;--muted:#73776d;--line:#dedfd5;--green:#304c3a;--soft:#e9ece2;--serif:Georgia,'Times New Roman',serif;font-family:Inter,'Segoe UI',Arial,sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none;color-scheme:light}
*{box-sizing:border-box}body{margin:0}button,input{font:inherit}button,a,input{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button{color:inherit}a{color:inherit}button:disabled{opacity:.45;cursor:wait}button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid #819b63;outline-offset:5px}svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}.icon-defs{display:none}[hidden]{display:none!important}.spectrum-line{height:4px;background:linear-gradient(90deg,#be8379,#d5ae76 22%,#c4c08a 40%,#8ba592 60%,#8aa3b1 78%,#a698b0)}.shell{max-width:1512px;margin:auto;padding:0 56px}.site-header{height:100px;display:flex;align-items:center;border-bottom:1px solid var(--line);gap:24px}.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-family:var(--serif);font-weight:700;font-size:28px;letter-spacing:-1px;flex-shrink:0}.brand-mark{width:40px;height:39px;stroke-width:3}.brand-name{line-height:1.05}.brand-tagline{font-size:9px;letter-spacing:1.8px;color:var(--muted);padding-left:23px;border-left:1px solid var(--line);line-height:25px}.site-header>.text-button{margin-left:auto}.text-button{border:0;background:none;padding:5px 0;font-size:12px;display:inline-flex;align-items:center;gap:12px;text-decoration:none}.text-button:hover{color:#687e49}.text-button svg{width:17px;height:17px}.intro{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;padding:40px 0 30px}.eyebrow{font-size:9px;letter-spacing:1.7px;font-weight:600;margin:0 0 10px;color:#838675}h1{font-family:var(--serif);font-size:clamp(35px,3.3vw,48px);font-weight:400;letter-spacing:-1.7px;line-height:1.12;margin:0 0 12px}.intro-copy{margin:0;color:var(--muted);font-size:13px;line-height:1.6}.intro-actions{display:flex;gap:10px;padding-bottom:2px}.button{display:inline-flex;align-items:center;justify-content:center;gap:9px;border-radius:5px;padding:12px 16px;font-size:11px;line-height:17px;font-weight:500;transition:background .18s,border-color .18s}.button svg{width:16px;height:16px}.button-light{background:transparent;border:1px solid #d2d5c9}.button-light:hover{background:#e9eade}.button-dark{background:var(--ink);border:1px solid var(--ink);color:#f8f8f0}.button-dark:hover{background:#425646;border-color:#425646}
.playground{display:grid;grid-template-columns:minmax(0,1fr) 300px;border:1px solid #d9ddd2;border-radius:9px;overflow:hidden;background:#fafaf6;box-shadow:0 8px 30px #2f433807}.scene-column{min-width:0;display:flex;flex-direction:column;background:#193336}.scene{position:relative;flex:1;min-height:570px;isolation:isolate;overflow:hidden}.scene canvas{width:100%;height:100%;position:absolute;inset:0;display:block;background:#334c59}.scene-top{position:absolute;top:26px;left:26px;right:26px;display:flex;justify-content:space-between;gap:18px;color:#dae4df;font-size:8px;letter-spacing:1.6px;line-height:1.6;pointer-events:none}.scene-caption{display:flex;align-items:center;gap:8px}.live-dot{width:5px;height:5px;border-radius:50%;background:#c3cfab;box-shadow:0 0 9px #c8d6bb77}.scene-top>#scene-number{font-size:8px;color:#cad6cd;letter-spacing:1px;text-align:right}.scene-bottom{position:absolute;bottom:24px;left:26px;right:26px;display:flex;justify-content:space-between;align-items:center;color:#d0dbd0;font-size:10px}.view-direction{display:flex;align-items:center;gap:9px;letter-spacing:.3px}.view-direction>span[aria-hidden]{font-size:20px;opacity:.8}.scene-button{display:flex;align-items:center;gap:9px;font-size:9px;border:1px solid #d7e2da32;background:#152a2b55;color:#e2e9dc;border-radius:30px;padding:8px 12px}.toggle-light{width:18px;height:10px;background:#677d68;border-radius:10px;position:relative}.toggle-light:after{content:'';position:absolute;width:6px;height:6px;top:2px;right:2px;border-radius:50%;background:#e0e9d0}.scene-button[aria-pressed=false] .toggle-light{background:#4e5b59}.scene-button[aria-pressed=false] .toggle-light:after{right:10px}.bow-label{position:absolute;left:50%;font-size:10px;letter-spacing:.15px;color:#f4f0de;display:flex;gap:8px;align-items:center;white-space:nowrap;transform:translate(20px,-24px);text-shadow:0 1px 6px #102229b0;pointer-events:none;transition:opacity .15s}.bow-label>span{font-size:8px;opacity:.65}.bow-label i{width:27px;border-top:1px solid #d6e0d380;position:absolute;left:-20px;top:24px;transform:rotate(-39deg);transform-origin:left}.bow-label i:before{content:'';width:3px;height:3px;background:#d6e0d3;border-radius:50%;position:absolute;left:-1px;top:-2px}.scene-message{position:absolute;top:31%;left:18%;right:18%;text-align:center;color:#e3e9df;text-shadow:0 1px 10px #20323c77}.message-symbol{font-size:34px;display:block;margin-bottom:12px;font-weight:200;color:#c8d4c1}.scene-message strong{font-family:var(--serif);font-size:28px;font-weight:400;letter-spacing:-.6px}.scene-message p{font-size:12px;line-height:1.7;margin:10px auto;max-width:270px;color:#c2d0c9}.render-state{position:absolute;left:50%;bottom:24px;transform:translateX(-50%);background:#182e32b0;border:1px solid #dce7dd22;border-radius:15px;padding:6px 11px;color:#d6e1d5;font-size:9px;white-space:nowrap}.scene-readout{height:54px;display:flex;align-items:center;gap:18px;padding:0 24px;color:#d8e2d6;background:#203832;font-size:10px;flex-shrink:0;border-top:1px solid #d1dec316}.readout-main{display:flex;align-items:center;gap:9px;font-size:11px}.readout-dot{width:5px;height:5px;border-radius:50%;background:#b8c799}.scene-readout>#scene-summary{opacity:.62;font-size:10px}.local-badge{margin-left:auto;color:#c1cdbb;font-size:9px;display:flex;align-items:center;gap:5px}.local-badge>span{font-size:14px;opacity:.7}
.controls{padding:26px 25px 20px;background:#fafaf6}.controls-heading{display:flex;justify-content:space-between;align-items:center}.controls-heading .eyebrow{font-size:8px;letter-spacing:1.5px;margin-bottom:6px}.controls-heading h2{font-family:var(--serif);font-weight:400;font-size:25px;letter-spacing:-.7px;margin:0}.icon-button{width:30px;height:30px;display:inline-flex;align-items:center;justify-content:center;border:0;background:transparent;color:#747e70;border-radius:50%;padding:6px}.icon-button:hover{background:#e9ede2}.icon-button svg{width:17px;height:17px}.presets{display:grid;grid-template-columns:1fr 1fr;gap:7px;margin:22px 0 24px}.preset{background:transparent;border:1px solid #dddfd4;border-radius:5px;display:flex;align-items:center;gap:7px;text-align:left;min-height:36px;padding:5px 7px;font-size:9px;color:#70796c;white-space:nowrap}.preset:hover{border-color:#899b7e;background:#eef1e8}.preset.active{border-color:#9eae8e;background:#edf0e6;color:#334732}.preset-art{width:22px;height:22px;border-radius:50%;flex-shrink:0;background:radial-gradient(circle at 50% 90%,#688480 0 29%,#adb69c 30% 33%,#a297b1 34% 37%,#96b6b4 38% 41%,#ccb594 42% 45%,#678380 46%)}.preset-art.fringes{background:radial-gradient(circle at 50% 90%,#667b83 0 24%,#c2c2aa 25% 27%,#8f929d 28% 30%,#c7c8ad 31% 34%,#9698a7 35% 38%,#b8c3b6 39% 42%,#c6b4a3 43% 47%,#667b83 48%)}.preset-art.fog{background:radial-gradient(circle at 50% 90%,#99acae 0 30%,#d4d8cc 35% 45%,#9eafb0 52%)}.preset-art.high{background:radial-gradient(circle at 66% 30%,#ead1a0 0 14%,#8da4a5 20%)}.control-group{margin-bottom:22px}.control-heading{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px;font-size:11px}.control-heading label{display:flex;align-items:center;gap:7px;font-weight:500}.control-heading svg{width:15px;height:15px;color:#7b8772}.control-heading output{font-variant-numeric:tabular-nums;font-size:12px;font-weight:500}.control-heading output small{font-size:10px;font-weight:400;color:#828b7b}.control-group input[type=range]{display:block;appearance:none;-webkit-appearance:none;width:100%;height:4px;border-radius:8px;background:linear-gradient(to right,#53684b var(--progress,50%),#e2e5d9 var(--progress,50%));margin:12px 0 11px;cursor:pointer;touch-action:pan-y}.control-group input.spectrum-range{background:linear-gradient(90deg,#d8ded5,#abbfb6 27%,#b5bcc6 47%,#b8b8a0 65%,#cfbb95 80%,#cfae91)}input[type=range]::-webkit-slider-thumb{appearance:none;width:13px;height:13px;border-radius:50%;background:#354d39;border:2px solid #fafaf6;box-shadow:0 0 0 1px #819275}input[type=range]::-moz-range-thumb{width:10px;height:10px;border-radius:50%;background:#354d39;border:2px solid #fafaf6;box-shadow:0 0 0 1px #819275}.range-ends{display:flex;justify-content:space-between;font-size:8px;color:#8a9082;letter-spacing:.1px}.control-hint{font-size:9px;color:#8a9082;line-height:1.6;margin:7px 0 0}.control-group.compact{margin-bottom:19px}.control-group.compact .control-heading{font-size:10px}.control-group.compact .control-heading output{font-size:11px}.rain-control{padding-bottom:19px;border-bottom:1px solid #e2e4d9}.switch-row{display:flex;align-items:center;justify-content:space-between;position:relative;cursor:pointer;font-size:10px;min-height:24px}.switch-row input{position:absolute;right:0;width:30px;height:20px;opacity:0;cursor:pointer;margin:0}.switch{width:27px;height:16px;border-radius:10px;background:#d6dbcf;position:relative;pointer-events:none;transition:background .15s}.switch:after{content:'';position:absolute;left:3px;top:3px;width:10px;height:10px;border-radius:50%;background:#fff;transition:transform .15s}.switch-row input:checked+.switch{background:#566d48}.switch-row input:checked+.switch:after{transform:translateX(11px)}.switch-row input:focus-visible+.switch{outline:3px solid #819b63;outline-offset:4px}.animate-button{width:100%;display:flex;align-items:center;gap:9px;border:1px solid #dce1d2;background:#f0f2e9;padding:10px 12px;margin-top:19px;font-size:10px;border-radius:4px;color:#596b4e}.animate-button:hover{background:#e5eadb}.animate-button[aria-pressed=true]{background:#dfe7d5}.animation-line{height:1px;background:linear-gradient(90deg,#81946f,transparent);flex:1;margin-left:6px}#play-icon{font-size:17px;line-height:15px;width:15px}
.discovery{padding:27px 0 26px;display:flex;align-items:center;gap:20px;border-bottom:1px solid var(--line)}.discovery-mark{width:44px;height:44px;flex-shrink:0;background:#e8ebdf;border-radius:50%;color:#839476;font-size:27px;display:grid;place-items:center}.discovery .eyebrow{font-size:8px;margin-bottom:6px;letter-spacing:1.4px}.discovery h2{font-family:var(--serif);font-size:20px;font-weight:400;margin:0 0 6px;letter-spacing:-.3px}.discovery p:last-child{font-size:11px;color:#79806f;line-height:1.6;margin:0;max-width:690px}.discovery>.text-button{margin-left:auto;white-space:nowrap;flex-shrink:0;font-size:10px}footer{padding:21px 0 25px;display:flex;align-items:center;justify-content:space-between;font-size:9px;color:#929787;gap:20px}.footer-right{display:flex;align-items:center;gap:12px}footer .text-button{font-size:9px;color:#858e7b}.footer-dot{color:#b9bdae}#performance{font-variant-numeric:tabular-nums}dialog{border:1px solid #d3d9c9;border-radius:12px;background:var(--paper);color:var(--ink);padding:30px 36px;width:min(600px,calc(100% - 32px));max-height:85dvh;box-shadow:0 30px 100px #16252140}dialog::backdrop{background:#10252477;backdrop-filter:blur(5px)}.dialog-heading{display:flex;align-items:center;justify-content:space-between;margin-bottom:15px;gap:15px}.dialog-heading .eyebrow{margin:0;font-size:8px}dialog h2{font-family:var(--serif);font-weight:400;font-size:32px;letter-spacing:-1px;line-height:1.15;margin:0 0 18px}dialog h3{font-family:var(--serif);font-size:20px;font-weight:400;margin:26px 0 10px}dialog p{font-size:13px;line-height:1.8;color:#687563;margin:12px 0}dialog a{text-underline-offset:3px}.light-diagram{background:#e9ede2;border-radius:6px;margin:20px 0}.light-diagram svg{width:100%;height:auto;display:block;stroke:#8ca79d;stroke-width:1;fill:none}.light-diagram .ray-in{stroke:#bfa170;stroke-width:1.8}.light-diagram .ray-out{stroke:url(#ray-spectrum);stroke-width:1.5}.light-diagram text{stroke:none;fill:#82917a;font-size:8px;font-family:Arial,sans-serif;letter-spacing:1px}.method-links{padding-top:12px;font-size:11px!important}.method-footer{font-size:10px;line-height:1.5;color:#89967d;margin-top:24px;border-top:1px solid #d8decd;padding-top:18px}.share-label{display:block;font-size:11px;margin:23px 0 8px}.share-field{display:flex;gap:8px}.share-field input{width:100%;min-width:0;padding:10px;border:1px solid #cfd7c4;border-radius:4px;background:#fffef9;color:#74806b;font-size:11px}.share-field button{white-space:nowrap}.copy-status{min-height:20px;font-size:11px}.toast{position:fixed;left:50%;bottom:26px;transform:translateX(-50%);padding:13px 20px;border-radius:6px;background:#253b2d;color:#e9edde;font-size:12px;box-shadow:0 4px 30px #11241422;z-index:10;max-width:90%;text-align:center}.noscript{position:fixed;inset:auto 20px 20px;background:#fff;padding:20px;border:1px solid #789067;z-index:100}
@media(min-width:1400px){.scene{min-height:610px}.controls{padding-top:30px;padding-bottom:24px}.control-group{margin-bottom:26px}.control-group.compact{margin-bottom:23px}.presets{margin-bottom:29px}.playground{grid-template-columns:minmax(0,1fr) 318px}}
@media(max-width:1100px){.shell{padding:0 30px}.site-header{height:84px}.intro{padding-top:30px}.playground{grid-template-columns:minmax(0,1fr) 276px}.controls{padding:24px 21px 18px}.scene{min-height:566px}.scene-top{left:20px;right:20px;flex-direction:column;gap:5px}.scene-top>#scene-number{text-align:left;opacity:.6;padding-left:13px}.scene-readout{padding:0 18px;gap:12px}.local-badge{display:none}.bow-label{font-size:9px;transform:translate(10px,-24px)}.intro-actions .button{padding:10px 13px}.discovery p:last-child{max-width:550px}.discovery>.text-button{display:none}}
@media(max-width:780px){.shell{padding:0 22px}.site-header{height:78px}.brand{font-size:24px}.brand-mark{width:34px}.brand-tagline{display:none}.site-header{gap:16px}.intro{padding:28px 0 24px;align-items:flex-start}.intro .eyebrow{font-size:8px;letter-spacing:1.2px}h1{font-size:36px}.intro-copy{font-size:12px}.intro-actions{padding-top:20px;gap:7px}.intro-actions .button{padding:11px}.intro-actions .button-light span{display:none}.intro-actions .button-dark{font-size:10px}.playground{grid-template-columns:1fr}.scene{min-height:0;height:430px;flex:auto}.scene-top{flex-direction:row}.scene-top>#scene-number{text-align:right;padding-left:0}.scene-readout{height:48px}.local-badge{display:flex}.controls{padding:25px;display:grid;grid-template-columns:1fr 1fr;column-gap:28px}.controls-heading,.presets{grid-column:1/-1}.presets{grid-template-columns:repeat(4,1fr);margin:20px 0 26px}.preset{min-height:39px;font-size:10px}.controls-heading h2{font-size:27px}.control-heading{font-size:12px}.control-group.compact .control-heading{font-size:11px}.control-group{margin-bottom:25px}.control-group.compact{margin-bottom:20px}.range-ends{font-size:9px}.control-hint{font-size:10px}.rain-control{border:0;padding:0}.switch-row{font-size:11px;border-top:1px solid var(--line);padding-top:19px;align-self:center}.switch-row input{top:19px}.animate-button{margin-top:0;align-self:end}.discovery{padding:25px 0}.discovery p:last-child{font-size:12px}footer{font-size:9px}.scene-message{top:30%;left:15%;right:15%}}
@media(max-width:520px){.shell{padding:0 16px}.site-header{height:74px}.brand{font-size:21px;letter-spacing:-.6px;gap:8px}.brand-name>span{display:block}.brand-tagline{display:none}.site-header>.text-button{font-size:11px}.intro{display:block;padding-top:28px}.intro h1{font-size:37px;letter-spacing:-1.4px}.intro-actions{padding:19px 0 0;gap:9px}.intro-actions .button{font-size:11px;padding:10px 13px}.intro-actions .button-light span{display:inline}.intro .eyebrow{margin-bottom:10px}.scene{height:340px}.scene-top{top:20px;left:17px;right:17px;font-size:7px;letter-spacing:1.1px}.scene-top>#scene-number{display:none}.scene-bottom{bottom:18px;left:17px;right:17px}.view-direction{font-size:9px;gap:6px}.bow-label{font-size:8px;gap:5px;transform:translate(9px,-23px)}.bow-label>span{display:none}.scene-readout{padding:0 17px;gap:10px}.scene-readout>#scene-summary{margin-left:auto;font-size:9px}.readout-main{font-size:10px}.local-badge{display:none}.render-state{bottom:57px;font-size:8px}.controls{padding:23px 20px;column-gap:23px}.presets{grid-template-columns:1fr 1fr;gap:7px;margin-bottom:26px}.preset{font-size:10px;padding:6px 9px;gap:9px}.control-group{grid-column:1/-1;margin-bottom:26px}.control-group.compact{grid-column:auto}.control-hint{font-size:10px}.control-group.compact .control-hint{font-size:9px}.range-ends{font-size:8px}.rain-control .range-ends>span:last-child{max-width:70px;text-align:right}.switch-row{font-size:10px}.animate-button{font-size:9px;padding:10px;gap:5px}.animation-line{display:none}.discovery{gap:13px;align-items:flex-start}.discovery-mark{width:33px;height:33px;font-size:23px;margin-top:3px}.discovery h2{font-size:19px}.discovery p:last-child{font-size:11px;line-height:1.8}.discovery .eyebrow{font-size:7px;letter-spacing:1.1px}footer{display:block;text-align:center;padding:20px 0}.footer-right{justify-content:center;margin-top:11px;font-size:8px}dialog{padding:23px}dialog h2{font-size:28px}.scene-message strong{font-size:25px}.scene-message p{font-size:11px}.scene-message{top:25%;left:12%;right:12%}.message-symbol{font-size:28px;margin-bottom:10px}.share-field{flex-direction:column}.share-field .button{align-self:flex-start;margin-top:4px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{transition:none!important;scroll-behavior:auto!important}}
.export-preview{display:block;width:100%;height:auto;border-radius:5px;background:#203832}.download-link{text-decoration:none;margin-top:8px}

/* Live camera controls */
.camera-bar{display:flex;align-items:center;gap:18px;padding:0 0 18px}
.camera-bar .button{flex-shrink:0;background:#e9ede2;border-color:#cad4bf}
.camera-bar .button[aria-pressed=true]{background:#344c39;color:#f2f3e9;border-color:#344c39}
.camera-bar p{font-size:11px;line-height:1.6;color:#78836f;margin:0;max-width:650px}
.camera-bar[data-status=error] p{color:#946346}
.camera-source{position:fixed;left:0;bottom:0;width:1px;height:1px;opacity:0;pointer-events:none}
.camera-tools{display:grid;grid-template-columns:1fr 1fr;gap:18px 28px;padding:20px 25px;background:#eef1e6;color:#354a38;border-top:1px solid #ccd7c1}
.camera-tools>p{grid-column:1/-1;font-size:10px;line-height:1.7;margin:0;color:#77836d}
.camera-tools .control-group{margin:0}
.camera-tools .camera-limit{font-size:9px;color:#8b9382}
.camera-tool-actions{grid-column:1/-1;display:flex;justify-content:space-between;gap:20px}
.camera-tool-actions .text-button{font-size:10px}
.camera-live .scene{min-height:440px}
.camera-live #sky{cursor:grab;touch-action:none}
.camera-live #sky:active{cursor:grabbing}
.camera-live #sky:focus-visible{outline:3px solid #b9d59e;outline-offset:-5px}
.horizon-guide{position:absolute;left:0;right:0;border-top:1px dashed #f2f4dabb;pointer-events:none;color:#edf2de}
.horizon-guide span{position:absolute;right:18px;top:7px;padding:4px 6px;border-radius:3px;background:#20382e80;font-size:7px;letter-spacing:1px}
.camera-live .scene-bottom{pointer-events:none}
.camera-live .scene-bottom button{pointer-events:auto}
.camera-live .scene-top,.camera-live .scene-bottom{text-shadow:0 1px 5px #172d27}
@media(max-width:780px){.camera-live .scene{min-height:0;height:430px}}
@media(max-width:520px){.camera-bar{align-items:flex-start;gap:12px;padding-bottom:18px}.camera-bar p{font-size:10px}.camera-bar .button{font-size:10px;padding:10px}.camera-tools{gap:16px 22px;padding:18px 20px}.camera-tools .control-group{grid-column:auto}.camera-tools .control-heading{font-size:10px}.camera-live .scene{height:340px}.camera-live .view-direction{font-size:8px}.camera-live .scene-button{font-size:8px;padding:8px}.camera-tools .camera-limit{font-size:9px}}