:root{--ink:#23382f;--muted:#7a837a;--paper:#f7f7f0;--line:#dce1d6;--green:#456451;--soft:#ebeee5}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,'Apple SD Gothic Neo','Noto Sans KR',sans-serif;font-size:14px;display:flex;min-height:100vh}button,input,a{-webkit-tap-highlight-color:transparent}button{font:inherit;color:inherit;cursor:pointer;border:1px solid var(--line);background:transparent;border-radius:7px;padding:9px 12px;transition:background .15s}button:hover{background:var(--soft)}button:focus-visible,input:focus-visible{outline:3px solid #93aa79;outline-offset:3px}.sidebar{width:280px;flex-shrink:0;padding:30px 24px 18px;border-right:1px solid var(--line);display:flex;flex-direction:column}.brand{display:flex;align-items:center;gap:10px;font-weight:750;font-size:20px}.brand .mark{font-size:32px;font-weight:300}.brand span:not(.mark){display:block;font-size:9px;letter-spacing:2.5px;margin-top:4px;font-weight:500;color:var(--muted)}h1{font-size:25px;line-height:1.45;letter-spacing:-1px;margin:33px 0 10px}.intro{font-size:12px;line-height:1.8;color:var(--muted);margin:0 0 25px}nav{display:flex;flex-direction:column;gap:4px}.room-button{border:none;display:flex;align-items:center;text-align:left;padding:10px 11px;gap:12px;width:100%}.room-button .number{color:#8c978c;font-size:10px;letter-spacing:1px;width:19px}.room-button .name{flex:1}.room-button .arrow{opacity:.4}.room-button.active{background:var(--green);color:white}.room-button.active .number{color:#ced8c8}.room-button.secondary{font-size:12px;color:#8e8473}.sequence{margin-top:24px;border-top:1px solid var(--line);padding-top:18px;font-size:11px}.eyebrow{font-size:9px;letter-spacing:1.7px;font-weight:650;color:var(--muted)}.sequence-head{display:flex;justify-content:space-between;padding:14px 24px 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var(--line);border-radius:12px;background:#e9ede5}#canvas-container{position:absolute;inset:0}canvas{display:block;width:100%;height:100%;touch-action:none}#labels{position:absolute;inset:0;pointer-events:none;overflow:hidden}.label{position:absolute;transform:translate(-50%,-50%);pointer-events:auto;background:#fffffff0;border:1px solid #dae0d3;padding:7px 11px;border-radius:5px;font-size:11px;box-shadow:0 2px 6px #2137280a;white-space:nowrap}.label small{display:block;font-size:8px;color:var(--muted);margin-top:3px}.label.uncertain{border:1px dashed #aa9776;background:#faf7edeb;color:#8b7757}.label.entry{background:var(--green);color:white}.stage-meta{position:absolute;top:21px;left:22px;font-size:10px;display:flex;align-items:center;gap:7px;color:#66725f}.status-dot{width:5px;height:5px;border-radius:50%;background:#617d4c}.view-modes{position:absolute;right:17px;top:14px;background:#ffffffd9;border:1px solid #d9e0d1;padding:3px;border-radius:8px;display:flex}.view-modes button{border:0;font-size:11px;padding:7px 12px}.view-modes button.active{background:var(--green);color:white}.legend{position:absolute;bottom:19px;left:22px;font-size:9px;color:#77816e;display:flex;gap:16px}.legend i{display:inline-block;width:11px;border-top:2px solid #9aa88e;vertical-align:middle;margin-right:5px}.legend i.dashed{border-top-style:dashed;border-color:#b29c72}.canvas-help{position:absolute;right:21px;bottom:19px;font-size:9px;color:#7b8473}.detail{display:flex;justify-content:space-between;align-items:center;padding:23px 0 20px;border-bottom:1px solid var(--line);gap:20px}h3{font-size:19px;letter-spacing:-.6px;margin:8px 0}.detail p{font-size:12px;line-height:1.8;color:var(--muted);margin:0;max-width:660px}.measure{text-align:right;min-width:195px}.measure strong{display:block;font-size:24px;font-weight:400;letter-spacing:-1px}.measure span{display:block;font-size:10px;margin-top:8px;color:var(--muted)}.controls{display:flex;align-items:center;gap:22px;padding-top:16px;font-size:11px;color:#6e7a67}.controls label{display:flex;align-items:center;gap:4px;cursor:pointer}.controls input{accent-color:var(--green)}.controls button{margin-left:auto;border:0;font-size:11px;padding:2px}#loading{position:absolute;inset:0;background:#eef0e8;display:grid;place-content:center;font-size:13px;color:var(--muted)}dialog{max-width:1050px;width:90%;max-height:90vh;background:var(--paper);border:1px solid var(--line);border-radius:14px;color:var(--ink);padding:28px}dialog::backdrop{background:#23372e75;backdrop-filter:blur(5px)}.dialog-header{display:flex;align-items:center;justify-content:space-between}.dialog-header h2{margin-bottom:18px}dialog p{font-size:13px;line-height:1.8}dialog .note{font-size:11px;color:var(--muted)}.reference-grid{display:grid;grid-template-columns:260px 1fr;gap:30px}.reference-grid 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strong{font-size:20px}}@media(max-width:760px){body{display:block}.sidebar{width:100%;padding:18px;border-right:0;border-bottom:1px solid var(--line)}.brand{font-size:17px}h1,.intro,.sequence,.footnote{display:none}nav{flex-direction:row;overflow:auto;margin-top:15px}.room-button{width:auto;white-space:nowrap;padding:9px}.room-button .number,.room-button .arrow{display:none}.reference-btn{position:absolute;right:18px;top:23px;font-size:10px;padding:7px}.sidebar .brand span:not(.mark){font-size:8px}main{padding:20px 15px;max-height:none}header{margin-bottom:15px}.header-actions{gap:4px}.header-actions button{font-size:9px;padding:7px}h2{font-size:20px}.stage{height:57vh;min-height:360px;flex:none}.stage-meta{top:60px;left:14px;font-size:9px}.view-modes{right:12px;top:12px}.detail{align-items:flex-start;gap:10px}.detail p{font-size:11px}.measure{min-width:115px}.measure strong{font-size:17px}.measure 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