:root{color-scheme:dark;--paper:#111312;--ink:#e5e8e4;--muted:#a2aaa2;--line:#2c322e;--accent:#b2cfb9}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:28px}body{margin:0;background:var(--paper);color:var(--ink);font-family:"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.9}a{color:var(--accent);text-underline-offset:4px}a:hover{color:#d5eadb}button{font:inherit;cursor:pointer}a:focus-visible,button:focus-visible,summary:focus-visible{outline:2px solid var(--accent);outline-offset:5px}.skip{position:fixed;top:-80px;left:20px;background:var(--paper);padding:12px;z-index:10}.skip:focus{top:12px}
.document-bar{max-width:1080px;margin:auto;padding:28px 36px;display:flex;gap:22px;align-items:center;border-bottom:1px solid var(--line);font-size:11px;color:var(--muted);letter-spacing:.06em}.wordmark{font-size:23px;font-weight:650;letter-spacing:-1px;color:var(--ink);text-decoration:none}.document-bar button{margin-left:auto;border:1px solid var(--line);background:transparent;padding:3px 10px;font-size:12px;color:var(--ink)}
.proposal{max-width:832px;margin:auto;padding:72px 36px 90px}.document-heading{margin-bottom:42px}.document-kind{font-size:12px;color:var(--muted);letter-spacing:.08em;margin-bottom:18px}h1,h2,h3{font-weight:550;line-height:1.45;letter-spacing:-.02em}h1{font-size:42px;margin:0 0 20px;max-width:760px}h2{font-size:25px;margin:0 0 22px}h3{font-size:19px;margin:36px 0 14px}.subtitle{font-size:18px;color:var(--muted);margin-bottom:22px}.document-meta{font-size:12px;color:var(--muted)}p{margin:0 0 20px}section{margin-top:58px}section.abstract{margin-top:0;padding:26px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.abstract h2{font-size:15px;margin-bottom:15px}.abstract p{font-size:15px}.document-links{display:flex;gap:24px;font-size:13px}.contents{margin-top:28px;display:flex;flex-wrap:wrap;gap:9px 20px;font-size:12px;color:var(--muted)}.contents>span{flex-basis:100%;margin-bottom:3px}.contents a{color:var(--muted);text-decoration:none}.contents a:hover{text-decoration:underline}sup{font-size:11px;line-height:0;margin-left:3px}sup a{text-decoration:none}
.tool-roles{margin:30px 0;font-size:14px}.tool-roles>div{display:grid;grid-template-columns:155px 1fr;padding:13px 0;border-top:1px solid var(--line)}dt{font-weight:600}dd{margin:0;color:var(--muted)}figure{margin:30px 0}figcaption,.figure-note{font-size:12px;color:var(--muted);line-height:1.7;margin-top:12px}.visual-scene{position:relative;width:100%;height:390px;overflow:hidden;background:#1b211d;border:1px solid var(--line)}.visual-scene canvas{display:block;width:100%;height:100%}.visual-loading{position:absolute;inset:0;display:grid;place-items:center;font-size:12px;color:var(--muted)}.visual-ready .visual-loading{display:none}ul,ol{padding-left:23px;margin:22px 0}li{margin-bottom:12px;padding-left:5px}.prototype-links{font-size:13px}.sample-materials{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin-top:28px}.sample-materials figure{margin:0;min-width:0}.sample-materials img{width:100%;aspect-ratio:1.15;object-fit:contain;background:#1b211d;border:1px solid var(--line)}.sample-materials figure:first-child img{object-fit:cover}.sample-materials figcaption{margin-top:8px}.evaluation-list li{margin-bottom:24px}.evaluation-list strong{font-size:15px;font-weight:600}.evaluation-list p{margin-top:5px}.references{border-top:1px solid var(--line);padding-top:28px}.references li{font-size:13px;margin-bottom:20px;overflow-wrap:anywhere}.references p{font-size:12px;color:var(--muted);margin-top:6px}details{margin-top:28px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:17px 0;font-size:14px}summary{cursor:pointer;font-weight:550}details[open] summary{margin-bottom:20px}.hardware-figure img{width:100%;display:block}.hardware-figure{margin:22px 0}footer{max-width:1080px;margin:auto;padding:24px 36px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:20px;font-size:11px;color:var(--muted)}
@media(max-width:600px){.document-bar{padding:19px 22px}.proposal{padding:42px 22px 60px}h1{font-size:30px;line-height:1.5}h2{font-size:22px}.subtitle{font-size:16px}body{font-size:15px}.document-heading{margin-bottom:30px}section{margin-top:44px}.visual-scene{height:270px}.tool-roles>div{grid-template-columns:1fr;gap:5px}.sample-materials{grid-template-columns:repeat(2,minmax(0,1fr))}footer{padding:22px;flex-wrap:wrap}.contents{gap:8px 16px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
.edit-direction{border-left:2px solid var(--line);padding:0 0 0 18px;margin-bottom:22px;font-size:14px}.edit-direction>span{display:block;color:var(--muted);font-size:12px;margin-bottom:8px}.edit-direction p{margin-bottom:12px}.edit-direction button{border:1px solid var(--line);border-radius:5px;background:#232a25;color:var(--ink);font-size:13px;padding:7px 13px}.edit-direction button:disabled{opacity:.5;cursor:wait}.edit-direction [role=status]{font-size:12px;color:var(--muted);margin:10px 0 0}.motion-study .visual-scene{height:370px}.take-label{position:absolute;z-index:1;top:12px;left:12px;font-size:11px;background:#111312cc;padding:5px 8px;pointer-events:none}.take-label+.take-label{left:calc(50% + 12px)}.study-inputs[hidden]{display:none}.study-timeline{display:block;font-size:12px;color:var(--muted);padding-top:14px}.study-timeline output{float:right;font-variant-numeric:tabular-nums;color:var(--ink)}.study-timeline input{display:block;width:100%;margin-top:10px;accent-color:var(--accent)}@media(max-width:600px){.motion-study .visual-scene{height:640px}.take-label+.take-label{left:12px;top:calc(50% + 12px)}}
.spatial-render{height:400px}.spatial-render::after{content:'';position:absolute;top:0;bottom:0;left:50%;width:1px;background:var(--line);pointer-events:none}.capture-label{position:absolute;top:12px;left:12px;z-index:1;font-size:11px;line-height:1.6;color:var(--ink);background:#111312cc;padding:5px 8px;pointer-events:none}.capture-label+ .capture-label{left:calc(50% + 12px)}.capture-inputs{display:grid;grid-template-columns:1fr 1fr;gap:24px;padding:16px 0 0}.capture-inputs label{font-size:12px;color:var(--muted)}.capture-inputs output{float:right;color:var(--ink)}.capture-inputs input{display:block;width:100%;accent-color:var(--accent);margin-top:9px;cursor:pointer}@media(max-width:600px){.spatial-render{height:680px}.spatial-render::after{top:50%;left:0;right:0;bottom:auto;width:auto;height:1px}.capture-label+ .capture-label{left:12px;top:calc(50% + 12px)}.capture-inputs{grid-template-columns:1fr;gap:15px}}
.reference-chip{display:inline;background:#272d29;border-radius:5px;padding:1px 5px;color:var(--ink);font-size:.93em;font-weight:550;text-decoration:none;box-decoration-break:clone;-webkit-box-decoration-break:clone;transition:background .15s}.reference-chip:hover,.reference-chip:focus-visible{background:#3a463e}.link-preview{position:fixed;z-index:50;width:316px;max-width:calc(100vw - 24px);max-height:calc(100dvh - 24px);overflow:auto;background:#191c1a;border:1px solid #3b423d;border-radius:19px;box-shadow:0 16px 45px #0008,0 2px 8px #0005;padding:4px;font-size:14px;line-height:1.65;animation:preview-in .14s ease-out}.link-preview[hidden]{display:none}.preview-image{display:block;width:100%;height:205px;object-fit:cover;border-radius:15px;background:#1b211d}.preview-image[src$="bench.png"]{object-fit:contain}.preview-paper{padding:32px 20px;background:#1b211d;border-radius:15px;font-family:Georgia,serif;font-size:24px;color:#b2cfb9}.preview-body{padding:20px}.preview-source{font-weight:650;font-size:13px}.preview-domain{font-size:11px;color:var(--muted);margin:0 0 17px}.preview-title{display:block;color:var(--ink);font-weight:650;text-decoration:none;line-height:1.5;margin-bottom:9px}.preview-title:hover{text-decoration:underline}.preview-body p{font-size:13px;color:var(--muted);margin:0}@keyframes preview-in{from{opacity:0;transform:translateY(5px)}to{opacity:1;transform:translateY(0)}}@media(prefers-reduced-motion:reduce){.link-preview{animation:none}.reference-chip{transition:none}}
@media print{:root{color-scheme:light;--ink:#27352d;--muted:#697269;--line:#dce0d8;--accent:#3e604d}.link-preview,.document-bar button,.contents,.document-links{display:none}.reference-chip{background:none;padding:0}.proposal{max-width:none;padding:24px}body{background:white;font-size:11pt}h1{font-size:25pt}h2{font-size:17pt}section{margin-top:28px}figure{break-inside:avoid}a{color:inherit}.visual-scene{height:260px}}
.figure-toolbar{display:flex;align-items:center;gap:10px;flex-wrap:wrap;padding:12px 0;color:var(--muted);font-size:12px}.figure-toolbar button{border:1px solid var(--line);border-radius:5px;background:#232a25;color:var(--ink);padding:5px 12px;font-size:12px}.figure-toolbar button:hover{background:#354038}.take-progress{height:2px;background:var(--line);flex:1;min-width:60px}.take-progress i{display:block;width:calc(var(--motion-progress,0)*1%);height:100%;background:var(--accent)}.take-progress i{width:var(--motion-progress,0%)}.study-labels{display:flex;justify-content:space-around;padding:12px;background:#191e1b;border:1px solid var(--line);border-bottom:0;font-size:12px;color:var(--muted)}.study-labels span:last-child{color:#e99575}.study-phases{display:flex;justify-content:space-around;border-bottom:1px solid var(--line);font-size:11px;padding:12px;color:var(--muted)}.study-phases .active{color:#e99575}.study-inputs{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;padding:18px 0}.study-inputs label{font-size:12px;color:var(--muted)}.study-inputs output{display:block;color:var(--ink);font-size:16px;font-variant-numeric:tabular-nums;margin:4px 0}.study-inputs input{display:block;width:100%;accent-color:#c98565;cursor:pointer}.visual-fallback{position:absolute;inset:0;display:grid;place-items:center;font-size:13px;color:var(--muted)}@media(max-width:600px){.study-inputs{grid-template-columns:1fr;gap:14px}.study-inputs label{display:grid;grid-template-columns:1fr auto;align-items:center}.study-inputs input{grid-column:1/-1}.study-inputs output{font-size:14px}}