:root{color-scheme:dark;--bg:#10141d;--panel:#141a25;--panel-2:#19212e;--line:#283242;--text:#edf1f8;--muted:#96a5ba;--accent:#a8b2ff;--cyan:#80d7d0;--soft:#75819c;--font:Inter,"Segoe UI",Arial,sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font);font-size:13px;line-height:1.55}button,input{font:inherit}button{border:1px solid var(--line);background:#202938;color:var(--text);border-radius:7px;cursor:pointer;padding:7px 11px;line-height:1.3;transition:background .15s,border-color .15s}button:hover{background:#2b374a;border-color:#4a5873}button:disabled{opacity:.4;cursor:default}button:focus-visible,input:focus-visible,summary:focus-visible,a:focus-visible{outline:2px solid var(--cyan);outline-offset:3px}button.primary{background:#aeb8ff;color:#151b32;font-weight:700;border:0}button.primary:hover{background:#c2c9ff}button.quiet{background:transparent}button.active,button[aria-pressed=true]{border-color:#8592e0;background:#293150;color:#d9ddff}.app-header{height:83px;padding:16px 25px;display:flex;align-items:center;gap:13px;border-bottom:1px solid var(--line);background:#121823}.brand-mark{width:39px;height:39px;display:grid;place-items:center;border:1px solid #394660;border-radius:11px;background:#20293f}.brand-mark svg{width:26px;height:26px;fill:#b4bfff;transform:rotate(32deg)}h1,h2,h3,p{margin-top:0}.brand h1{font-size:19px;line-height:1.2;letter-spacing:-.4px;margin:0 0 4px}.brand p{color:var(--muted);font-size:12px;margin:0}.course-tag{font-size:10px;letter-spacing:.4px;text-transform:uppercase;border:1px solid #364259;background:#1d2636;border-radius:20px;padding:5px 10px;margin-left:12px;color:#bbc6d8;white-space:nowrap}.course-tag span{margin:0 4px;color:#7786a0}.header-actions{display:flex;gap:6px;margin-left:auto;font-size:12px}.workspace{display:grid;grid-template-columns:246px minmax(360px,1fr) 286px;height:calc(100dvh - 113px);min-height:570px}.browser-panel,.details-panel{display:flex;flex-direction:column;background:var(--panel);min-height:0}.browser-panel{border-right:1px solid var(--line)}.details-panel{border-left:1px solid var(--line)}.panel-heading{display:flex;align-items:center;justify-content:space-between;margin:23px 18px 16px;gap:6px}.panel-heading h2{font-size:13px;font-weight:650;margin:0;letter-spacing:.2px}.small-tag{font-size:10px;border:1px solid #354054;padding:2px 6px;border-radius:4px;color:#afbad0;white-space:nowrap}.search-wrap{display:flex;align-items:center;gap:9px;margin:0 16px 17px;background:#0e141f;border:1px solid #354052;border-radius:7px;padding:9px 10px}.search-wrap svg{width:15px;height:15px;fill:none;stroke:#8796b0;stroke-width:1.7;flex-shrink:0}.search-wrap input{background:transparent;color:var(--text);border:0;outline:none;min-width:0;max-width:100%;width:100%;font-size:12px}.search-wrap input::placeholder{color:#8a99af}.browser-tabs{display:flex;padding:0 15px;border-bottom:1px solid var(--line);gap:7px}.browser-tabs button{flex:1;background:transparent;border:0;border-radius:0;color:var(--muted);padding:7px 0 10px;font-size:11px;border-bottom:2px solid transparent}.browser-tabs button[aria-selected=true]{color:#c3cbff;border-bottom-color:#a8b2ff}.component-list{flex:1;overflow:auto;padding:12px 10px 18px;scrollbar-width:thin;scrollbar-color:#344055 transparent}.tree-row{display:flex;align-items:center;gap:3px;margin:2px 0;min-height:37px;border-radius:6px}.tree-row.selected{background:#29344b}.tree-row.context{box-shadow:inset 2px 0 0 var(--cyan)}.tree-toggle{background:transparent!important;border:0;width:23px;padding:6px 0;font-size:12px;color:#8190a9;flex-shrink:0}.tree-leaf{width:14px;flex-shrink:0;display:grid;place-items:center;color:#66768f;font-size:9px}.component-button{display:flex;flex:1;min-width:0;align-items:center;text-align:left;gap:8px;background:transparent;border:0;padding:8px 6px;font-size:12px}.component-button:hover{background:#222d40}.component-button .part-name{overflow-wrap:anywhere;flex:1}.part-count{font-size:9px;color:#7f91ae;border:1px solid #344057;border-radius:4px;padding:1px 4px}.component-button .part-symbol{color:#8999b4;font-size:15px;line-height:1}.tree-children{margin-left:10px;padding-left:5px;border-left:1px solid #273346}.group-title{text-transform:uppercase;font-size:9px;letter-spacing:1.1px;color:#8e9fb8;margin:16px 10px 6px}.empty-note{font-size:12px;line-height:1.7;color:var(--muted);padding:6px 9px}.result-count{font-size:10px;color:#8c9bb3;padding:3px 9px 10px}.result-parent{display:block;color:#8999b1;font-size:10px;margin-top:2px}.browser-foot{margin-top:auto;border-top:1px solid var(--line);padding:15px 17px;display:flex;align-items:center;gap:9px;background:#121923}.browser-foot strong,.browser-foot span{display:block;font-size:10px;font-weight:400}.browser-foot strong{font-weight:600;color:#c5cedd;margin-bottom:2px}.browser-foot span{color:#8393aa}.status-dot{width:6px;height:6px;border-radius:50%;background:#7ec0ae;box-shadow:0 0 0 4px #7ec0ae0a;flex-shrink:0}.model-panel{display:flex;flex-direction:column;min-width:0;min-height:0;background:#111722}.breadcrumbs{height:43px;padding:9px 17px;border-bottom:1px solid #28324299;display:flex;align-items:center;gap:7px;overflow:auto;flex-shrink:0;white-space:nowrap}.breadcrumbs button{border:0;background:transparent;font-size:11px;padding:3px 4px;color:#bac5d8}.breadcrumbs button:last-child{color:#abb9ff}.breadcrumbs .crumb-sep{font-size:10px;color:#596984}.viewport{position:relative;flex:1;min-height:280px;overflow:hidden;background:radial-gradient(ellipse at 47% 47%,#263246 0%,#1b2433 48%,#131b28 100%)}.viewport canvas{display:block;width:100%;height:100%;touch-action:none;position:absolute;inset:0}.scene-caption{position:absolute;left:22px;top:21px;z-index:2;pointer-events:none;max-width:calc(100% - 125px)}.eyebrow{font-size:9px;letter-spacing:1.7px;font-weight:600;color:#95a6c4;display:block;margin-bottom:8px}.scene-caption h2{font-size:24px;line-height:1.2;font-weight:500;letter-spacing:-.5px;margin:0 0 5px}.scene-caption p{font-size:11px;color:#93a5bf;margin:0}.canvas-help{position:absolute;bottom:14px;left:50%;transform:translateX(-50%);z-index:2;color:#8d9fbb;font-size:10px;white-space:nowrap;pointer-events:none;background:#111925a6;border-radius:5px;padding:5px 9px}.canvas-help span{margin:0 5px;color:#556c8e}.orientation{position:absolute;right:16px;bottom:14px;color:#7288a8;font-size:8px;display:flex;gap:7px;align-items:center;z-index:2;pointer-events:none}.orientation-cross{font-size:30px;font-weight:200;color:#7994b7}.loading-card{position:absolute;z-index:8;left:50%;top:50%;transform:translate(-50%,-50%);max-width:380px;width:80%;background:#141c2bf2;border:1px solid #3b4a66;border-radius:14px;text-align:center;padding:29px 25px;box-shadow:0 16px 55px #060a1460;display:flex;align-items:center;flex-direction:column;gap:13px}.loading-card[hidden]{display:none}.loading-card strong{font-size:16px}.loading-card>span{color:#9fb0c9;font-size:12px}.loading-card progress{width:100%;height:5px;accent-color:var(--accent)}.loading-card.error .loading-orbit{animation:none;border-color:#94785d;background:#49382b}.loading-orbit{width:29px;height:29px;border:2px solid #4d587a;border-top-color:#bdc6ff;border-radius:100%;animation:spin 1.2s linear infinite}.loading-card button{margin-top:5px}.selection-tag{position:absolute;right:15px;top:20px;z-index:2;color:#d2ddfa;border:1px solid #48567a;background:#17223ee8;border-radius:6px;font-size:10px;padding:5px 8px;max-width:160px;pointer-events:none}.view-bar{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:10px 17px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:#141c29}.view-buttons{display:flex;align-items:center;gap:5px}.view-buttons button{font-size:10px;padding:5px 9px;background:transparent}.view-bar>.quiet{font-size:10px;white-space:nowrap}.control-label{color:#92a3bd;font-size:10px;margin-right:5px}.model-controls{border:0;padding:14px 19px 12px;margin:0;min-width:0;background:#141c29}.visibility-row{display:flex;gap:20px;margin-bottom:15px;flex-wrap:wrap}.check-control{font-size:11px;color:#c1cadd;display:flex;align-items:center;gap:7px;cursor:pointer}.check-control input{accent-color:#adb8ff;width:13px;height:13px;margin:0}.check-control:has(input:disabled){opacity:.45}.decompose-row{display:flex;align-items:center;gap:12px;min-width:0}.decompose-row>div{flex-shrink:0;min-width:142px}.decompose-row label{font-size:11px;color:#d5dcee}.decompose-row span{display:block;font-size:9px;color:#8395b0;margin-top:1px}.decompose-row input{flex:1;min-width:50px}.decompose-row output,.operation-row output{font-size:11px;min-width:34px;color:#bdc9e4;font-variant-numeric:tabular-nums}.decompose-row button{font-size:10px;padding:6px 8px}input[type=range]{appearance:none;height:4px;background:#35415a;border-radius:10px;accent-color:#adb8ff;cursor:pointer}input[type=range]::-webkit-slider-thumb{appearance:none;width:13px;height:13px;border-radius:50%;background:#bac3ff;border:2px solid #e4e8ff;box-shadow:0 0 0 4px #8d9df514}input[type=range]::-moz-range-thumb{width:10px;height:10px;border-radius:50%;background:#bac3ff;border:2px solid #e4e8ff}input[type=range]:disabled{opacity:.4;cursor:default}.operation-row{display:flex;align-items:center;gap:10px;padding-top:13px;border-top:1px solid #2b3545;margin-top:14px}.operation-row[hidden]{display:none}.operation-row>div,.operation-row>label{margin-right:auto;font-size:11px}.operation-caption{display:block;color:#8193af;font-size:9px;margin-top:2px}.operation-row button{font-size:10px}.operation-row input{width:30%;min-width:80px}.context-bar{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:8px 12px;border-top:1px solid var(--line);background:#101722;min-height:43px}.context-bar>span{font-size:9px;color:#8599b7;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.context-bar>div{display:flex;gap:3px;flex-shrink:0}.context-bar button{font-size:10px;padding:5px 8px}.icon-button{border:0;background:transparent!important;padding:0 4px;font-size:20px;color:#93a5c0;line-height:1}.detail-content{overflow:auto;padding:10px 21px 24px;scrollbar-width:thin;scrollbar-color:#344055 transparent}.detail-content h2{font-size:25px;font-weight:500;line-height:1.22;letter-spacing:-.5px;margin:7px 0 15px}.detail-content p{font-size:12px;color:#b1bfd4;line-height:1.75;margin-bottom:19px}.welcome-icon{font-size:66px;color:#92a6d9;line-height:1;margin:20px 0 24px}.journey-mini{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:14px 0;margin:23px 0;display:flex;flex-direction:column;gap:16px}.journey-mini span{font-size:10px;color:#869bd1}.journey-mini b{font-weight:500;font-size:12px;color:#cad4e5;margin-left:12px}.subtle{color:#8396b2!important;font-size:11px!important}.detail-system{display:inline-block;text-transform:uppercase;font-size:9px;letter-spacing:1.1px;color:#a9d2cf;border:1px solid #345753;background:#18302e;padding:3px 7px;border-radius:4px;margin-bottom:9px}.detail-kind{font-size:10px;color:#8a9bb7;margin:5px 0 16px}.detail-actions{display:flex;flex-wrap:wrap;gap:7px;margin-bottom:22px}.detail-actions button{font-size:11px}.detail-actions .primary{flex:1 0 100%;padding:10px}.detail-section{padding-top:16px;margin-top:17px;border-top:1px solid var(--line)}.detail-section h3{font-size:10px;text-transform:uppercase;letter-spacing:1px;font-weight:600;color:#a0afc8;margin-bottom:10px}.detail-section p{font-size:11px;margin-bottom:8px}.detail-section details summary{cursor:pointer;color:#a0afc8;font-size:11px;margin-bottom:9px}.child-link{display:flex;align-items:center;justify-content:space-between;gap:6px;width:100%;text-align:left;border:0;border-bottom:1px solid #283243;background:transparent;font-size:11px;border-radius:0;padding:9px 0;color:#c2cfe3}.child-link>span:last-child{color:#7e91b0;font-size:10px}.hidden-notice{border-left:2px solid #bfad74;padding:8px 10px;background:#332e2460;font-size:11px;color:#d0c5a6;margin-bottom:15px}.source-text{overflow-wrap:anywhere;color:#8ea0bb!important;font-size:10px!important}.app-footer{height:30px;display:flex;align-items:center;justify-content:space-between;gap:14px;padding:0 19px;color:#7c8ba3;font-size:9px;border-top:1px solid var(--line);background:#111721}.info-dialog{color:var(--text);background:#171f2e;border:1px solid #3a4660;border-radius:17px;padding:31px 33px;max-width:570px;width:calc(100% - 35px);max-height:85dvh;box-shadow:0 24px 100px #0009}.info-dialog::backdrop{background:#050913bd;backdrop-filter:blur(5px)}.info-dialog h2{font-size:27px;font-weight:500;line-height:1.2;letter-spacing:-.5px;margin-bottom:16px}.info-dialog p{font-size:12px;line-height:1.75;color:#b4c1d6}.info-dialog h3{font-size:12px;color:#d1dced;margin:20px 0 8px}.dialog-close{float:right;border:0;background:transparent;padding:0 4px;font-size:24px;color:#acb9d0;line-height:1}.guide-steps{padding-left:24px;margin:22px 0}.guide-steps li{padding:0 0 14px 7px;color:#b0bcff;font-size:12px}.guide-steps strong{color:#e2e8f5;display:block;margin-bottom:3px;font-weight:600}.guide-steps span{color:#9eafc9;font-size:11px}.guide-question{background:#223048;border:1px solid #38496a;padding:14px 16px;border-radius:9px;margin-bottom:17px}.guide-question strong{font-size:11px;color:#b2c1ef}.guide-question p{margin:5px 0 0;font-size:11px}.copyright-block{border-top:1px solid #364057;padding-top:18px;margin:22px 0 14px;font-size:11px;color:#c6d0e2;line-height:1.9}a{color:#b3bfff;text-underline-offset:3px}.about-scope{background:#1d293b;border-radius:9px;padding:1px 16px 3px}.layer-card{padding:13px 10px;border-bottom:1px solid #2a3547}.layer-card h3{font-size:12px;margin-bottom:8px;color:#cbd5e8}.layer-card p{font-size:11px;color:#93a5bf;line-height:1.65;margin:8px 0 0}.layer-card button{font-size:11px;width:100%;text-align:left}.no-script{position:fixed;inset:40% 20%;background:#263247;z-index:99;padding:24px;border:1px solid #6a7f9b;border-radius:10px}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}.skip-link{position:fixed;left:10px;top:-60px;background:#c4cbff;color:#151b32;padding:9px 14px;z-index:99}.skip-link:focus{top:10px}.details-panel.collapsed .detail-content{display:none}[hidden]{display:none!important}@keyframes spin{to{transform:rotate(360deg)}}
@media(min-width:1650px){.workspace{grid-template-columns:268px minmax(400px,1fr) 322px}.detail-content{padding:14px 25px}.scene-caption{left:29px;top:27px}.scene-caption h2{font-size:29px}}
@media(max-width:1250px){.workspace{grid-template-columns:220px minmax(340px,1fr) 250px}.brand p{display:none}.course-tag{margin-left:0}.app-header{padding:13px 18px;height:70px}.workspace{height:calc(100dvh - 100px)}.view-bar{padding:9px 12px}.view-buttons{gap:3px}.view-buttons button{padding:5px 6px}.control-label{margin-right:2px}.decompose-row{gap:8px}.decompose-row>div{min-width:125px}.model-controls{padding:12px}.detail-content{padding:10px 16px}.detail-content h2{font-size:23px}.orientation{display:none}.canvas-help{font-size:9px}.visibility-row{gap:13px}.check-control{font-size:10px}.context-bar>span{max-width:35%}.header-actions button{font-size:11px}}
@media(max-width:1020px){.workspace{grid-template-columns:195px minmax(360px,1fr);height:calc(100dvh - 100px);min-height:620px}.details-panel{position:fixed;right:14px;top:119px;width:259px;max-height:calc(100dvh - 360px);z-index:6;border:1px solid #3b4862;border-radius:10px;background:#17202ef5;box-shadow:0 8px 40px #03081170}.details-panel .panel-heading{margin:13px 15px}.detail-content{padding-top:2px}.detail-content h2{font-size:19px}.detail-content p{font-size:11px}.detail-content .welcome-icon{display:none}.detail-content .journey-mini{margin:10px 0;padding:10px 0;gap:8px}.details-panel.collapsed{width:175px}.scene-caption{top:15px;left:18px}.scene-caption h2{font-size:22px}.selection-tag{display:none}.course-tag{font-size:9px}.app-header{gap:9px}.brand h1{font-size:17px}.brand-mark{width:33px;height:33px}.header-actions{gap:3px}.app-footer{font-size:8px}.app-footer span:last-child{display:none}.panel-heading{margin:20px 15px 14px}}
@media(max-width:700px){.app-header{height:66px;padding:10px 12px}.brand h1{font-size:15px}.brand-mark{width:29px;height:29px}.brand-mark svg{width:20px;height:20px}.course-tag{display:none}.header-actions button{font-size:10px;padding:6px}.workspace{display:flex;flex-direction:column;height:auto;min-height:0}.browser-panel{border-right:0;border-bottom:1px solid var(--line);height:214px;flex-shrink:0}.browser-panel>.panel-heading{display:none}.search-wrap{margin:11px 12px 5px;padding:7px 9px}.browser-tabs{padding:0 12px}.browser-tabs button{padding:6px}.component-list{padding:6px 10px;min-height:95px}.browser-foot{display:none}.tree-row{min-height:30px;margin:0}.component-button{padding:5px 6px;font-size:11px}.model-panel{min-height:630px;height:calc(100dvh - 95px);max-height:850px}.viewport{min-height:300px}.breadcrumbs{padding:7px 11px;height:36px}.scene-caption{left:16px;top:14px}.scene-caption h2{font-size:23px}.view-bar{padding:8px 10px;gap:3px}.view-buttons{gap:3px}.view-buttons button{padding:5px 6px;font-size:9px}.view-bar>.quiet{font-size:9px;padding:5px}.model-controls{padding:11px 13px}.decompose-row{flex-wrap:wrap;gap:8px}.decompose-row>div{min-width:130px}.decompose-row input{min-width:55px}.decompose-row button{font-size:9px}.visibility-row{margin-bottom:12px;gap:15px}.canvas-help{font-size:8px;width:auto;bottom:10px;white-space:nowrap}.context-bar>span{display:none}.context-bar{justify-content:flex-end}.details-panel{position:relative;right:auto;top:auto;width:auto;max-height:none;border:0;border-top:1px solid var(--line);border-radius:0;box-shadow:none}.details-panel.collapsed{width:auto}.detail-content{padding:8px 20px 24px;max-height:450px}.details-panel .panel-heading{margin:15px 18px 10px}.detail-content .welcome-icon{display:block;font-size:40px;margin:8px 0 12px}.detail-content h2{font-size:25px}.app-footer{height:auto;padding:12px 15px;flex-wrap:wrap;gap:3px;font-size:9px}.app-footer span{width:100%}.info-dialog{padding:24px}.info-dialog h2{font-size:25px}.loading-card{max-width:320px;padding:23px}.operation-row{gap:8px}.operation-row button{font-size:9px}.operation-row input{width:25%}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}
@media(min-width:701px) and (max-width:1020px){.workspace{height:auto;grid-template-rows:minmax(580px,calc(100dvh - 100px)) auto}.browser-panel{grid-row:1 / 3;max-height:calc(100dvh - 100px)}.details-panel{position:relative;grid-column:2;right:auto;top:auto;width:auto;max-height:300px;border:0;border-top:1px solid var(--line);border-radius:0;box-shadow:none}.details-panel.collapsed{width:auto}.detail-content{padding:4px 20px 20px}.model-panel{height:auto;min-height:580px}}
.motion-controls{margin-top:12px;border-top:1px solid #2b3545;padding-top:9px}.motion-controls>summary{font-size:11px;color:#c4cde2;cursor:pointer}.motion-controls>summary>span{font-size:9px;color:#8193af;margin-left:8px}.motion-controls .operation-row{padding-top:10px;margin-top:8px}.motion-controls .operation-row:first-of-type{border-top:0}.scene-caption{top:16px}.scene-caption .eyebrow{display:none}.scene-caption h2{font-size:22px;margin-bottom:3px}.scene-caption p{font-size:10px}

/* Keep expanded controls within their panel on short laptop viewports. */
@media(min-width:1021px){.model-panel{overflow-y:auto;scrollbar-width:thin;scrollbar-color:#36465f #111722}.model-controls,.context-bar,.breadcrumbs,.view-bar{flex-shrink:0}}

/* The flow lesson replaces the left inventory while preserving model details. */
.flow-mode .browser-panel>.search-wrap,.flow-mode .browser-panel>.browser-tabs,.flow-mode .browser-panel>.component-list{display:none}
.flow-panel{flex:1;min-height:0;overflow:auto;padding:2px 18px 20px;scrollbar-width:thin;scrollbar-color:#39475e transparent}
.flow-panel h2{font-size:25px;letter-spacing:-.5px;line-height:1.16;margin:6px 0 13px}
.flow-intro{font-size:11px;line-height:1.65;color:#a6b6cc;margin-bottom:17px}
.flow-actions{display:flex;gap:6px}.flow-actions button{font-size:11px;padding:8px 11px}
.flow-actions button.primary[aria-pressed=true]{background:#80d7d0;color:#142829;border-color:transparent}
.flow-status{font-size:10px;color:#a3bdcb;margin:10px 0 13px;min-height:30px}
.flow-channel{display:grid;grid-template-columns:14px 7px 1fr;gap:8px;padding:13px 0;border-top:1px solid #2b3545;cursor:pointer}
.flow-channel input{accent-color:#aeb8ff;margin:3px 0 0;width:13px;height:13px}
.flow-swatch{display:block;width:7px;height:24px;border-radius:3px;margin-top:1px}
.flow-channel strong{display:block;font-size:11px;color:#e5ebf4;font-weight:600}
.flow-channel small{display:block;margin-top:5px;font-size:10px;line-height:1.6;color:#95a8c0}
.flow-ghost{margin:13px 0 0}.flow-caption{font-size:10px;color:#a6b3c6;line-height:1.7;margin:13px 0}
.flow-stations{border-top:1px solid #2c3749;padding-top:15px;margin-top:17px;display:flex;gap:6px;flex-wrap:wrap}
.flow-stations h3{width:100%;font-size:11px;color:#becce1;font-weight:500;margin:0 0 3px}
.flow-stations button{font-size:10px;padding:6px 8px}
.flow-notes{font-size:10px;color:#91a4be;line-height:1.7;margin:19px 0}.flow-notes summary{color:#b7c7df;cursor:pointer}.flow-notes p{margin:9px 0}
#flow-close{width:100%;font-size:10px}
.calculation-dialog{max-width:1000px;width:calc(100% - 48px);max-height:90dvh;padding:26px 30px}
.calculation-dialog>h2{margin-bottom:18px}.calculation-dialog>form{position:sticky;top:0;height:0;z-index:3}.calculation-dialog .dialog-close{position:relative;background:#171f2e;width:34px;height:34px;border:1px solid #43516b;border-radius:50%}
@media(max-width:1100px){.course-tag{display:none}.brand p{display:none}.header-actions button{font-size:10px;padding:7px 8px}}
@media(max-width:700px){.app-header{height:auto;min-height:66px;flex-wrap:wrap;gap:8px}.header-actions{width:100%;margin:0;justify-content:space-between}.header-actions button{font-size:10px}.flow-mode .browser-panel{height:310px}.flow-panel{padding:12px 17px}.flow-panel h2{font-size:22px}.flow-channels{display:grid;grid-template-columns:1fr 1fr;gap:0 16px}.flow-mode .browser-panel>.panel-heading{display:none}.calculation-dialog{width:calc(100% - 20px);max-height:94dvh;padding:20px 15px}.calculation-dialog>h2{font-size:24px}}
.systems-mode .browser-panel>.search-wrap,.systems-mode .browser-panel>.browser-tabs,.systems-mode .browser-panel>.component-list{display:none}
.systems-dialog{max-width:750px}.lesson-cards{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:24px 0}.lesson-cards button{text-align:left;padding:19px 17px;background:#1c293b;border-color:#3b4d68}.lesson-cards button:hover{background:#293a51;border-color:#93c9d2}.lesson-cards span{display:block;font-size:9px;letter-spacing:1.2px;color:#88c7c7;margin-bottom:8px}.lesson-cards strong{font-size:18px;display:block;margin-bottom:8px}.lesson-cards small{display:block;color:#a9bbd4;font-size:12px;line-height:1.65}.systems-panel>div>p{font-size:11px;color:#aebed3;line-height:1.7}.system-input{border-top:1px solid #304056;padding:16px 0}.system-input label{display:block;font-size:12px;color:#d5deec;margin-bottom:12px}.system-input output{float:right;font-size:11px;color:#84d1ca}.system-input input[type=range]{width:100%;margin:7px 0 11px}.system-input small{display:block;font-size:10px;color:#8fa7c4;line-height:1.7}.system-actions{display:flex;flex-wrap:wrap;gap:7px;margin:15px 0}.system-actions button{font-size:10px;padding:8px}.system-status{border-left:2px solid #80d7d0;background:#1b2b3f;padding:10px 12px;font-size:11px!important;color:#c6dbdf!important}.system-connections{color:#efc278!important;font-size:11px!important}.system-swatch{display:inline-block;width:8px;height:8px;border-radius:2px;margin-right:5px}.system-parts{margin:17px 0}.system-parts h3{font-size:11px;color:#aabbd3}.system-parts button{font-size:10px;text-align:left;width:100%;margin:3px 0;padding:7px 9px}.system-caption{font-size:10px!important;color:#92a6c0!important;line-height:1.7}.system-caption a{color:#b9c7ff}.systems-panel>#systems-close{font-size:10px;width:100%;margin:14px 0}.system-back{font-size:10px;margin:12px 0}.systems-mode .flow-panel{display:none}.systems-mode #systems-panel{display:block}.systems-panel[hidden]{display:none!important}
@media(max-width:1150px){.brand p,.course-tag{display:none}.header-actions button{font-size:10px;padding:7px}}
@media(max-width:700px){.systems-mode .browser-panel{height:380px}.lesson-cards{grid-template-columns:1fr}.lesson-cards button{padding:14px}.lesson-cards strong{font-size:17px}.system-input{padding:12px 0}.system-actions{margin:10px 0}}

/* Colleague review V04: clear body axes and measured surface deflection. */
.flight-axis-key{display:grid;gap:5px;margin:15px 0;padding:10px 0;border-block:1px solid #39485b}.flight-axis-key span{font-size:12px;color:#aabace}.flight-axis-key b{display:inline-block;min-width:126px;color:#a3dfd3;font-weight:600}.surface-readout{font-size:12px!important;line-height:1.6;color:#ffe0a8!important;margin:-5px 0 18px!important;font-variant-numeric:tabular-nums}.flight-closeups button{font-size:11px}.systems-panel .check-control{margin:9px 0}.system-input output{font-variant-numeric:tabular-nums}