:root{--paper:#f6f5ef;--ink:#183c3b;--muted:#657773;--line:#d9dfd6;--green:#dce9ae;--panel:#fff;--accent:#235a53}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:Arial,Helvetica,sans-serif;font-size:15px;line-height:1.55}button,input,select{font:inherit}button,a,input,select,summary{touch-action:manipulation}a{color:inherit}button{cursor:pointer}button:disabled{opacity:.42;cursor:not-allowed}[hidden]{display:none!important}header{height:92px;max-width:1440px;margin:auto;padding:0 5%;display:flex;align-items:center;gap:60px;border-bottom:1px solid var(--line)}.brand{text-decoration:none;font-size:34px;font-weight:800;letter-spacing:-2px;display:flex;align-items:center;gap:8px}.brand-symbol{font-size:33px;font-weight:normal;letter-spacing:0}.brand-dot{color:#799a4f;margin-left:-7px}nav{display:flex;gap:32px;font-size:13px}nav 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#e5ebdf;left:40px;top:10px;transform:rotate(-9deg);padding:22px}.paper-art svg{width:130px;position:absolute;left:10px;top:30px;color:#8b9e7e}.paper-art img{position:absolute;width:48px;bottom:12px;right:10px}.paper-art i{display:block;width:40px;height:1px;background:#d6ddce;margin-bottom:5px}.art-tl,.art-br{position:absolute;width:24px;height:24px;border:1px solid #47765d}.art-tl{left:10px;top:0;border-right:0;border-bottom:0}.art-br{right:10px;bottom:20px;border-left:0;border-top:0}.art-measure{position:absolute;bottom:-2px;left:0;right:0;font-size:8px;letter-spacing:2px;color:#7b8f75}.buttonrow{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin:24px 0 15px}button{border:0;border-radius:6px;padding:12px 17px;font-size:13px;font-weight:600;transition:background .15s}.primary{background:var(--ink);color:white}.primary:hover:not(:disabled){background:#2b5b50}.primary span{margin-left:20px}.secondary{background:white;border:1px solid var(--line);color:var(--ink)}.secondary:hover{background:#eef2e8}.small{font-size:11px!important}.full{width:100%;margin-top:15px}.textbutton{background:transparent;padding:8px 0;color:var(--accent);font-size:12px;text-decoration:underline;text-underline-offset:3px}aside{padding:26px 24px;border-left:1px solid var(--line)}.reference{display:flex;gap:12px;align-items:center;margin-bottom:24px}.reference img{width:59px;border:1px solid var(--line)}.reference strong{display:block;font-size:12px}.reference span{display:block;font-size:10px;color:var(--muted)}.reference a{font-size:11px}label{display:block;font-size:12px;font-weight:600;margin:12px 0 6px}.unit{float:right;font-weight:normal;color:var(--muted)}input,select{width:100%;min-width:0;border:1px solid #cdd7cf;border-radius:5px;padding:9px 11px;color:var(--ink);background:#fff}input:focus,select:focus,button:focus-visible,a:focus-visible,summary:focus-visible{outline:2px solid #6b8d55;outline-offset:3px}.hint{color:var(--muted);font-size:11px;line-height:1.6;margin-top:8px}.tip{border-top:1px solid var(--line);margin-top:25px;padding-top:22px;font-size:12px}.tip p{color:var(--muted);margin-top:7px}#message{border-top:1px solid var(--line);padding:14px 25px;font-size:12px;color:var(--muted);background:#fcfdf9}#message.error{background:#fff1e7;color:#834223}#warnings{padding:12px 25px;background:#fcf7e7;color:#75633c;font-size:12px}#warnings p{margin:3px 0}.canvas-heading{display:flex;justify-content:space-between;align-items:center;font-size:10px;letter-spacing:1px;margin-bottom:10px}#editor{width:100%;align-self:start}.canvas-wrap{position:relative;background-color:#e8ede5;background-image:linear-gradient(45deg,#e1e7dc 25%,transparent 25%),linear-gradient(-45deg,#e1e7dc 25%,transparent 25%),linear-gradient(45deg,transparent 75%,#e1e7dc 75%),linear-gradient(-45deg,transparent 75%,#e1e7dc 75%);background-size:20px 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span{position:absolute;bottom:0;left:0;right:0;background:#183c3bcc;color:white;font-size:11px;text-align:center;padding:6px}.how{display:grid;grid-template-columns:1fr 1.2fr;gap:50px;padding:70px 0;border-bottom:1px solid var(--line)}h2{font-size:34px;line-height:1.2;font-weight:500;letter-spacing:-1.2px;margin:0 0 20px}.how ol{list-style:none;padding:0;margin:0}.how li{display:flex;gap:24px;margin-bottom:23px}.how li>span{font-family:Georgia,serif;font-size:25px;color:#8c9d78}.how h3{margin:0 0 4px;font-size:15px}.how p{font-size:13px;color:var(--muted);max-width:440px}.marker-section{display:grid;grid-template-columns:1fr 1.2fr;gap:50px;padding:65px 0}.marker-section>div>p{max-width:510px;color:var(--muted);font-size:14px}.marker-section .eyebrow{font-size:10px}.marker-preview{background:#e7eddf;min-height:310px;border-radius:12px;display:flex;flex-direction:column;align-items:center;justify-content:center;align-self:start;padding:35px}.marker-preview img{width:220px;box-shadow:8px 10px 0 #d4ddcb}.marker-preview span{font-size:11px;margin-top:25px;letter-spacing:2px}.downloadlinks{display:flex;gap:20px;flex-wrap:wrap;font-size:12px;font-weight:600;margin:22px 0}.downloadlinks a{text-underline-offset:5px}footer{border-top:1px solid var(--line);padding:25px 5%;display:flex;gap:35px;align-items:center}footer p{font-size:10px;color:var(--muted);margin:0}footer>span{font-size:9px;letter-spacing:1.5px;margin-left:auto;color:var(--muted)}@media(max-width:900px){header{gap:30px;height:75px}.edition{display:none}.intro{padding-top:40px}.intro-note{width:220px}.workbody{grid-template-columns:minmax(0,1fr) 285px}.stage{padding:18px}aside{padding:24px 18px}.session-label{display:none}.stepbar{gap:25px}.buttonrow{flex-direction:column;align-items:center}.buttonrow button{min-width:180px}}@media(max-width:650px){main{padding:0 16px}header{padding:0 20px;justify-content:space-between;gap:10px}.brand{font-size:30px}nav{gap:18px;font-size:11px}.intro{padding:32px 0 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#liveOverlay{position:absolute;inset:0;width:100%;height:100%;max-width:none;pointer-events:none;background:transparent}#cameraView{width:100%}.live-guidance{margin-top:14px}.live-guidance>p{font-size:13px;font-weight:600}.live-guidance details{margin:0;padding:8px 0}.live-guidance canvas{max-height:220px;max-width:100%;width:auto;margin:12px auto;background:white;cursor:default}.live-guidance .hint{max-width:480px;margin:auto;text-align:center}.live-guidance summary{font-size:12px}.camera-grid{z-index:1}#liveOverlay{z-index:2}

#liveOverlay.adjustable{pointer-events:auto}#documentTools{padding:12px;background:#fff5e3;border-radius:6px}#documentTools select{max-width:260px}aside>label:first-child{margin-top:0}#knownSizeControls{padding:10px;background:#eef4e5;border-radius:6px}#shapeHint{margin-bottom:20px}

#knownSizeControls .cropfields{grid-template-columns:1fr 1fr}