/* Shared canvas extension. Existing approved header/sidebar palette stays in place. */
.arc-collaboration{color:#35443b}.arc-collaboration .app{grid-template-columns:214px minmax(0,1fr) 350px}.arc-collaboration #main{padding:24px 30px 40px;background:#fff}.arc-collaboration #topbar{height:48px}.arc-collaboration .primary{background:#4d7159;color:white;box-shadow:none}.arc-collaboration .soft{color:#465b4b;border:1px solid #d9e1d7;background:#fff}.arc-collaboration .text-button{display:inline-flex;align-items:center;gap:6px;color:#557360;font-size:11px;padding:5px 0}.arc-collaboration .icon-button{color:#69786d}.arc-collaboration i img{opacity:.8}.arc-collaboration .primary i img{opacity:1}.arc-collaboration textarea,.arc-collaboration input,.arc-collaboration select{color:#39483f;background:#fff;border:1px solid #d8e0d8;border-radius:6px;padding:10px;line-height:1.7}.arc-collaboration textarea{resize:vertical;width:100%}.arc-collaboration input{min-width:0}.arc-collaboration p{line-height:1.8}.arc-workspace{padding:6px 11px 15px;display:flex;flex-wrap:wrap;align-items:center;gap:8px}.arc-workspace>span{font-size:10px;color:#728368}.arc-workspace>strong{font-size:16px;width:100%;font-weight:650}.arc-license{font-size:9px;color:#6f8064;border:1px solid #c6d2bc;border-radius:4px;padding:2px 5px}.arc-collaboration .nav-item{height:37px;gap:10px}.arc-collaboration .side-section{margin-top:18px;padding-top:14px}.arc-collaboration .source-item{padding:9px 8px}.arc-context{display:flex;justify-content:space-between;gap:16px;padding:0 0 23px;border-bottom:1px solid #e6ebe5;margin-bottom:21px}.arc-eyebrow{font-size:9px;letter-spacing:1.05px;font-weight:600;color:#78897d;text-transform:uppercase;line-height:1.8}.arc-title-row{display:flex;align-items:center;gap:12px}.arc-context h1{font-size:23px;line-height:1.45;font-weight:650;letter-spacing:-.5px;margin:5px 0 7px;color:#30473b}.arc-context-meta{display:flex;align-items:center;gap:9px;font-size:10px;color:#7e8a81;flex-wrap:wrap}.arc-context-meta button{display:flex;align-items:center;gap:4px;padding:3px 7px;background:#f0f4ed;border:1px solid #dde5d8;border-radius:4px;color:#64785a}.arc-dot{height:5px;width:5px;border-radius:100%;background:#6c927c}.arc-meta-divider{color:#c4cec5}.arc-context-actions{display:flex;align-items:center;gap:17px;white-space:nowrap}.arc-view-tabs{display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid #e0e7de;margin-bottom:20px;gap:12px}.arc-view-tabs>div{display:flex;gap:20px}.arc-view{display:inline-flex;align-items:center;gap:6px;padding:10px 1px 13px;font-size:11px;color:#77887b;border-bottom:2px solid transparent}.arc-view.active{color:#385c45;border-color:#527b60;font-weight:650}.arc-tiny{color:#839086;font-size:10px;line-height:1.7}.arc-canvas-toolbar{display:flex;justify-content:space-between;align-items:center;margin:0 0 16px;gap:16px}.arc-canvas-toolbar>div{display:flex;align-items:center;gap:14px}.arc-canvas-toolbar strong{font-size:14px;font-weight:650}.arc-pill{display:inline-flex;border:1px solid #d9e3d5;background:#f2f6ef;color:#64785d;font-size:9px;border-radius:5px;padding:4px 7px;white-space:nowrap}.arc-canvas-intro{padding:16px 20px;background:#f5f8f2;border:1px solid #e2e9dd;border-radius:8px;margin-bottom:22px}.arc-canvas-intro>span{display:flex;align-items:center;gap:7px;color:#61785a;font-size:11px;font-weight:600}.arc-canvas-intro p{margin:7px 0 0;font-size:12px;color:#788575}.arc-sections{display:flex;flex-direction:column;gap:17px}.arc-section-card{border:1px solid #dfe5df;border-radius:9px;background:#fff;padding:18px 23px 0;scroll-margin-top:18px;box-shadow:0 2px 7px #34443504}.arc-section-card.is-selected{border-color:#a9bfa9;box-shadow:0 0 0 1px #a9bfa913}.arc-section-header{display:flex;gap:10px;align-items:center;color:#819083;font-size:10px;margin-bottom:15px}.arc-number{font-size:10px;color:#608266;background:#edf3e9;border-radius:5px;padding:5px 7px;font-weight:650}.arc-section-version{margin-left:auto;white-space:nowrap;color:#849386}.arc-section-header .icon-button{padding:4px}.arc-ai-button{display:flex;align-items:center;gap:4px;background:#f1f5ed;border:1px solid #d6e2cf;border-radius:5px;padding:5px 7px;color:#63825c}.arc-ai-button span{font-size:9px}.arc-section-card h2{font-size:19px;letter-spacing:-.3px;line-height:1.5;font-weight:650;margin:0 0 9px;color:#364d3c}.arc-section-copy{font-size:13px;line-height:1.9!important;color:#6a796b;margin:0 0 19px;white-space:pre-wrap;max-width:920px}.arc-section-footer{display:flex;justify-content:space-between;align-items:center;gap:12px;border-top:1px solid #edf0eb;padding:10px 0;color:#8a9789}.arc-section-footer>div{display:flex;align-items:center;gap:8px}.arc-basis{font-size:9px;color:#86947e;display:flex;align-items:center;gap:5px;text-align:left}.arc-basis i{width:13px;height:13px}.arc-example-pair{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:8px 0 21px}.arc-example-pair>div{border:1px solid #e3e7e0;border-radius:7px;background:#f8f9f6;padding:15px;display:flex;flex-direction:column;gap:8px}.arc-example-pair>div+div{background:#f0f6ed;border-color:#d8e4d0}.arc-example-pair span,.arc-example-pair small{font-size:10px;color:#8a9485}.arc-example-pair strong{font-size:15px;color:#596e50;font-weight:600}.arc-object-thread{margin:0 -23px;background:#f7f9f5;padding:17px 22px 18px;border-top:1px solid #e0e8da;border-radius:0 0 8px 8px}.arc-box-title{display:flex;align-items:center;justify-content:space-between;gap:12px}.arc-box-title strong{display:flex;align-items:center;gap:7px;font-size:12px;font-weight:600}.arc-box-title>span{font-size:9px;color:#819075}.arc-comment{padding:13px 0 9px;border-bottom:1px solid #e5ebdf}.arc-speaker{font-size:10px;font-weight:600;color:#728a65}.arc-speaker small{font-weight:400;color:#98a48c;margin-left:8px}.arc-comment p{font-size:12px;color:#65715d;margin:7px 0;white-space:pre-wrap}.arc-comment.by-user{padding-left:12px;border-left:2px solid #a3b495}.arc-object-compose{border:1px solid #d9e3d0;border-radius:7px;background:#fff;margin:15px 0 7px;overflow:hidden}.arc-object-compose textarea{border:0;min-height:76px;background:transparent;padding:13px;font-size:12px}.arc-row{display:flex;align-items:center;gap:10px}.arc-object-compose .arc-row{padding:0 8px 8px}.arc-object-compose small{font-size:9px;color:#98a18f;flex:1}.arc-object-compose .primary{padding:5px;min-height:28px}.arc-proposal{padding:15px;background:white;border:1px solid #cadbc1;border-radius:7px;margin:15px 0}.arc-diff small{display:block;font-size:10px;color:#8a9a7c;margin:15px 0 7px}.arc-diff p{padding:10px;background:#f5f4f1;font-size:11px;color:#909082;border-radius:5px;margin:0}.arc-diff textarea{font-size:12px;min-height:140px;background:#f8fbf5!important;line-height:1.8}.arc-proposal>.arc-row{margin-top:12px}.arc-field-label{display:block;font-size:10px;color:#86947c}.arc-field-label input{display:block;width:100%;font-size:17px;margin:6px 0 12px}.arc-section-edit{min-height:130px;font-size:13px;margin-bottom:12px}.arc-section-card>.arc-row{margin-bottom:15px}.arc-chat-panel{display:flex;flex-direction:column;padding:0!important;overflow:hidden!important;background:#f4f5f2!important;border-left:1px solid #dee4da;box-shadow:none!important}.arc-chat-heading{display:flex;align-items:center;justify-content:space-between;padding:19px 17px 10px}.arc-chat-heading>div{display:flex;align-items:center;gap:8px;color:#46594b}.arc-chat-heading strong{font-size:12px;font-weight:650}.arc-chat-model{display:flex;align-items:center;justify-content:space-between;margin:0 17px 15px;gap:8px}.arc-chat-model button{display:flex;align-items:center;gap:6px;padding:7px 9px;background:#fff;border:1px solid #dce3d7;border-radius:6px;font-size:10px;color:#657b5d}.arc-chat-model>span{font-size:9px;color:#94a087}.arc-chat-context{margin:0 17px 16px;padding:12px;border:1px solid #e0e6da;border-radius:6px;display:flex;flex-direction:column;gap:7px;background:#ecefe7}.arc-chat-context>span{font-size:9px;color:#8a9880}.arc-chat-context strong{font-size:11px;line-height:1.6;font-weight:550;color:#667b5c}.arc-chat-context small{font-size:9px;color:#909d85}.arc-chat-scroll{flex:1;overflow:auto;min-height:80px;padding:0 17px 20px;scrollbar-width:thin;scrollbar-color:#c5cbbf transparent}.arc-chat-message{padding:16px 14px;border:1px solid #e0e6da;border-radius:8px;background:#fff;margin-bottom:14px}.arc-chat-message.user{background:#eaf1e4;border-color:#dce7d4;margin-left:15px}.arc-chat-author{display:flex;align-items:center;gap:5px;font-size:10px;color:#607659}.arc-chat-author span{margin-left:auto;color:#a1ab97;font-size:9px}.arc-chat-message p{color:#6d7a64;font-size:12px;line-height:1.85;margin:12px 0;white-space:pre-wrap}.arc-chat-delivery{display:flex;flex-direction:column;border:1px solid #dce5d5;border-radius:7px;padding:13px;background:#f8faf5;gap:9px}.arc-chat-delivery strong{display:flex;align-items:center;gap:5px;font-size:11px;font-weight:600}.arc-chat-delivery span{font-size:10px;color:#9aa78c}.arc-chat-hint{font-size:9px;color:#8b9682;line-height:1.8;text-align:center;padding:7px}.arc-chat-compose{flex-shrink:0;margin:0 13px 8px;background:#fff;border:1px solid #cddbc3;box-shadow:0 3px 12px #354b3710;border-radius:8px;overflow:hidden}.arc-chat-compose textarea{border:0;background:white;min-height:96px;font-size:12px;resize:none;padding:13px}.arc-chat-compose .arc-row{padding:4px 7px 8px;gap:4px}.arc-chat-compose .arc-row>span{font-size:8px;color:#99a28e;flex:1}.arc-chat-compose .primary{min-height:28px;padding:5px}.arc-chat-foot{display:flex;justify-content:space-between;align-items:center;padding:2px 16px 13px}.arc-chat-foot span,.arc-chat-foot button{font-size:9px}.arc-chat-foot span{color:#9ba68f}.arc-chat-fold .app{grid-template-columns:214px minmax(0,1fr) 0}.arc-chat-fold #inspector{display:none}.arc-collaboration.folded .app{grid-template-columns:58px minmax(0,1fr) 350px}.arc-collaboration.folded.arc-chat-fold .app{grid-template-columns:58px minmax(0,1fr) 0}.folded .arc-workspace{display:none}.arc-page-heading{display:flex;justify-content:space-between;align-items:center;gap:15px;margin:8px 0 24px}.arc-page-heading h2{font-size:23px;font-weight:620;color:#36503e;letter-spacing:-.5px;margin:8px 0}.arc-page-heading p{font-size:12px;color:#8a9584;margin:0}.arc-journey-note{display:flex;gap:12px;align-items:center;background:#f3f7ef;border:1px solid #dce7d4;border-radius:8px;padding:19px;margin:20px 0}.arc-journey-note>div{flex:1}.arc-journey-note strong{font-size:12px;color:#5d7a52}.arc-journey-note p{margin:6px 0 0;font-size:11px;color:#869779}.arc-journey-note small{font-size:10px;color:#9aa98e}.arc-journey-steps{display:grid;grid-template-columns:1fr 1fr;gap:12px}.arc-step{display:flex;align-items:center;gap:14px;border:1px solid #e2e8dd;border-radius:7px;padding:18px;background:#fafbf8}.arc-step.current{background:#eef5e8;border-color:#abc69a}.arc-step>span{font-size:13px;color:#89a07c;font-weight:600}.arc-step>div{flex:1}.arc-step strong{font-size:12px;font-weight:550;display:block;color:#647959}.arc-step small{display:block;margin-top:7px;font-size:9px;color:#97a68b}.arc-branch-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:24px}.arc-branch-grid article{border:1px solid #e1e7da;border-radius:8px;padding:23px}.arc-branch-grid h3,.arc-next-cycle h3{font-size:15px;font-weight:600;color:#566e49;margin:8px 0 12px}.arc-branch-grid p,.arc-next-cycle p{font-size:11px;color:#89997a;line-height:1.9}.arc-branch-grid .featured{border-color:#b6cda7;background:#fafcf7}.arc-next-cycle{display:flex;align-items:center;justify-content:space-between;border-top:1px solid #e1e7db;padding-top:20px;margin-top:27px;gap:20px}.arc-next-cycle h3{font-size:13px;margin-bottom:7px}.arc-next-cycle p{margin:0}.arc-list-filter{display:flex;gap:10px;padding:14px 0 24px}.arc-list-filter label{display:flex;align-items:center;gap:8px;flex:1;border:1px solid #dde5d6;border-radius:6px;padding-left:12px}.arc-list-filter label input{border:0;flex:1;font-size:12px}.arc-list-filter select{font-size:11px}.arc-idea-row{display:flex;align-items:center;width:100%;padding:23px 20px;border:1px solid #dde6d6;border-radius:8px;background:#fff;text-align:left;gap:22px;margin-bottom:14px}.arc-idea-row:hover{background:#f9fbf6;border-color:#b9cfa9}.arc-idea-emblem{padding:16px;background:#edf4e7;border-radius:9px;color:#648652}.arc-idea-emblem i{width:23px;height:23px}.arc-idea-row>div:nth-child(2){flex:1;min-width:0}.arc-idea-row h3{font-size:17px;font-weight:620;color:#465f39;margin:7px 0 10px}.arc-idea-row p{font-size:11px;color:#879b76;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:640px}.arc-idea-row .arc-row{font-size:9px;color:#99a98d}.arc-idea-state{display:flex;align-items:flex-end;flex-direction:column;gap:30px;white-space:nowrap}.arc-idea-state>span+span{font-size:10px;display:flex;align-items:center;gap:8px;color:#7d936a}.arc-list-note{font-size:10px;color:#9ca991;padding:15px 0}.arc-empty{text-align:center;border:1px dashed #ccd9c3;background:#fafcf8;border-radius:8px;padding:46px 24px;margin:20px 0}.arc-empty h3{font-size:17px;color:#718965;font-weight:550}.arc-empty p{font-size:12px;color:#96a58a;margin-bottom:20px}.arc-large-icon i{width:32px;height:32px;opacity:.5}.arc-map-help{font-size:11px;color:#88997c;margin:6px 0 18px}.arc-mindmap{height:590px;min-height:380px;border:1px solid #dee6d7;border-radius:8px;background:#fafcf8}.arc-map-node{width:260px;padding:18px;background:#fff;border:1px solid #c5d5bc;border-radius:8px;box-shadow:0 3px 10px #364b3910;font:12px Pretendard,Arial,sans-serif;display:flex;flex-direction:column;gap:10px}.arc-map-node.basis{background:#e8f0e1;border-color:#a9c099;width:225px}.arc-map-node small{font-size:10px;color:#90a082}.arc-map-node strong{font-size:14px;font-weight:600;color:#536d43;line-height:1.6}.arc-map-node button{display:flex;align-items:center;gap:6px;text-align:left;color:#8b9e7c;font-size:10px;padding:6px 0 0;border-top:1px solid #e6ece0}.arc-map-node img{width:14px;height:14px;opacity:.55}.arc-map-node .react-flow__handle{background:#8eac7a;border-color:#f5f9f0}.arc-map-legend{display:flex;gap:17px;padding-top:13px;font-size:9px;color:#8d9e7e}.arc-map-legend small{margin-left:auto}.arc-collaboration #review{font-size:9px;justify-content:space-between;padding:0 15px}.arc-collaboration .dialog label{display:block;margin:13px 0;font-size:11px;color:#6a805c}.arc-collaboration .dialog label input,.arc-collaboration .dialog label textarea{display:block;width:100%;margin-top:6px}.arc-collaboration .dialog p{color:#829274}.arc-collaboration .dialog>textarea{width:100%}.arc-collaboration .dialog .primary{margin-top:10px}.arc-collaboration #main::-webkit-scrollbar{width:11px}.arc-collaboration #main::-webkit-scrollbar-thumb{background:#c9d5c2;border:3px solid white;border-radius:7px}.arc-collaboration #sidebar::-webkit-scrollbar{width:5px}.arc-chat-scroll::-webkit-scrollbar{width:5px}.arc-chat-scroll::-webkit-scrollbar-thumb{background:#c7cebf;border-radius:6px}
@media(min-width:1600px){.arc-collaboration .app{grid-template-columns:214px minmax(0,1fr) 370px}.arc-collaboration #main{padding:28px 38px 45px}.arc-chat-fold .app{grid-template-columns:214px minmax(0,1fr) 0}.arc-canvas-intro{padding:18px 23px}.arc-section-card{padding-top:21px;padding-bottom:0}.arc-section-card h2{font-size:20px}.arc-section-copy{font-size:14px}.arc-mindmap{height:640px}}
@media(max-width:1150px){.arc-collaboration .app{grid-template-columns:190px minmax(0,1fr) 290px}.arc-collaboration #main{padding:18px}.arc-context{display:block}.arc-context-actions{justify-content:flex-end}.arc-context h1{font-size:20px}.arc-view-tabs{display:block}.arc-view-tabs>.arc-tiny{display:none}.arc-view-tabs>div{gap:12px}.arc-section-card{padding-left:16px;padding-right:16px}.arc-object-thread{margin-left:-16px;margin-right:-16px;padding-left:16px;padding-right:16px}.arc-section-header{gap:7px}.arc-section-header>span:nth-child(2){flex:1}.arc-section-version{display:none}.arc-journey-steps,.arc-branch-grid{grid-template-columns:1fr}.arc-chat-fold .app{grid-template-columns:190px minmax(0,1fr) 0}.arc-mindmap{height:500px}.arc-example-pair{grid-template-columns:1fr}}
@media(max-width:760px){.arc-collaboration .app{grid-template-columns:58px minmax(0,1fr)}.arc-collaboration #sidebar{padding:8px 4px}.arc-collaboration #sidebar .source-item,.arc-collaboration #sidebar .side-section,.arc-collaboration #sidebar .side-bottom,.arc-collaboration .arc-workspace,.arc-collaboration .nav-item>span{display:none}.arc-collaboration .nav-item{padding:9px;justify-content:center}.arc-collaboration #inspector{display:none}.arc-context-actions{margin-top:8px}.arc-canvas-toolbar{align-items:flex-start;flex-direction:column}.arc-list-filter{flex-wrap:wrap}.arc-idea-row{padding:15px;gap:10px}.arc-idea-emblem{display:none}.arc-idea-row h3{font-size:14px}.arc-idea-state{gap:10px}.arc-idea-state>span+span{display:none}.arc-next-cycle{flex-wrap:wrap}.arc-collaboration .header-meta{gap:4px}.arc-collaboration #review>span+span{display:none}}
.arc-collaboration [hidden]{display:none!important}
.arc-collaboration .arc-section-copy,.arc-collaboration .arc-chat-message p{color:#657361}
.arc-collaboration .arc-tiny,.arc-collaboration .arc-context-meta,.arc-collaboration .arc-map-help,.arc-collaboration .arc-section-header,.arc-collaboration .arc-page-heading p{color:#74816c}
.arc-collaboration #main>.tabs{margin-bottom:18px}

/* Representative source-to-deliverable flow, preserving the existing frame. */
.arc-flow-summary{border:1px solid #d5dfcd;background:#f7faf4;border-radius:8px;margin:0 0 16px;color:#405541}
.arc-flow-summary summary{padding:12px;cursor:pointer;font-size:14px;font-weight:600}
.arc-flow-summary summary span{float:right;font-size:12px;font-weight:400}
.arc-flow-summary>div{padding:0 12px 12px}.arc-flow-summary strong{font-size:14px}
.arc-flow-summary p{font-size:13px;line-height:1.7;margin:9px 0}.arc-flow-summary .arc-row{flex-wrap:wrap;gap:4px 12px}
.arc-flow-summary button{font-size:13px;min-height:30px}
.arc-flow-compare{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin:20px 0}
.arc-flow-compare section{border:1px solid #d9e2d2;border-radius:8px;padding:16px;min-width:0}
.arc-flow-compare h3{font-size:16px;margin:0 0 12px}.arc-flow-compare p,.arc-flow-compare blockquote{font-size:15px!important;line-height:1.85!important;white-space:pre-wrap;color:#405541!important;margin:0}
.arc-flow-compare blockquote{border-left:3px solid #789565;padding-left:12px}
.arc-flow-notice{padding:16px;background:#f4f7ef;border:1px solid #d4dfcb;border-radius:8px;margin:16px 0;font-size:14px;line-height:1.7}
.arc-flow-checks label{display:flex!important;align-items:center;gap:10px;font-size:15px!important;padding:9px 0}
.arc-flow-checks input{width:18px!important;height:18px;flex:none;margin:0!important;accent-color:#4d7159}
.arc-flow-status{font-size:14px;color:#405541;font-weight:600}
.arc-flow-release{padding:15px 0;border-bottom:1px solid #d9e2d2}.arc-flow-release summary{cursor:pointer;font-size:15px}.arc-flow-release p{white-space:pre-wrap;font-size:15px!important;line-height:1.8!important;color:#405541!important}
.arc-flow-highlight{background:#edf4e7;border-left:3px solid #789565;padding:15px}
@media(max-width:800px){.arc-flow-compare{grid-template-columns:1fr}}