@import"https://fonts.googleapis.com/css2?family=IBM+Plex+Sans+Thai:wght@400;450;500;600;700&family=Manrope:wght@400;500;600;700;800&display=swap";:root{font-family:Manrope,IBM Plex Sans Thai,sans-serif;color:#273b32;background:#f8f8f2;font-synthesis:none;font-weight:450;--green:#34765d;--dark:#243b30;--muted:#788377;--line:#dce1d5;--paper:#fffef8;--orange:#cba16b}*{box-sizing:border-box}body{margin:0}button,input,select{font:inherit}button,a,input,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer}a{color:inherit;text-decoration:none}button svg,a svg{flex-shrink:0}svg{width:20px;height:20px}button:disabled{cursor:default;opacity:.5}button{border:0;background:transparent;color:inherit}button:hover,a:hover{color:var(--green)}:focus-visible{outline:3px solid #71b58c;outline-offset:4px}h1,h2,h3,p{margin:0}p{line-height:1.8}input[type=text],select{width:100%;border:1px solid #d2dacb;border-radius:7px;background:#fffefb;color:#33473d;min-height:39px;padding:8px 10px;outline-offset:2px}input[type=range]{width:100%;height:5px;margin:15px 0 21px;accent-color:var(--green);cursor:pointer}input[type=checkbox]{accent-color:var(--green);width:16px;height:16px}input[type=search]{border:0;background:transparent;outline:0;width:100%;min-width:0;color:var(--dark)}input::placeholder{color:#8c9587}[hidden]{display:none!important}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}.topbar{height:94px;max-width:1456px;padding:0 56px;margin:auto;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);gap:25px}.brand{display:flex;align-items:center;gap:12px;font-size:24px;letter-spacing:-1.2px;font-weight:800}.brand-mark{width:43px;height:43px;border-radius:11px;background:#2e644c;color:#f1f2dd;display:grid;place-items:center;transform:rotate(-4deg)}.brand-mark svg{width:28px;height:28px}.brand-light{font-weight:400;margin-left:3px}.brand small{font-size:8px;letter-spacing:2px;font-weight:600;display:block;margin-top:1px;color:#7e8879}.topbar nav{display:flex;align-items:center;gap:6px}.topbar nav a{display:flex;align-items:center;gap:8px;padding:12px 15px;border-radius:7px;font-size:13px;color:#707c6c}.topbar nav a[aria-current]{background:#e9eee2;color:#2c604b;font-weight:600}.topbar nav svg{width:17px;height:17px}.progress-pill{display:flex;align-items:center;gap:8px;font-size:11px;padding:9px 13px;border:1px solid #d6deca;border-radius:30px;white-space:nowrap}.progress-pill b{font-size:12px;margin-left:6px}.tiny-dot{display:inline-block;width:6px;height:6px;background:#6ba379;border-radius:50%}.eyebrow{font-family:Manrope,IBM Plex Sans Thai,sans-serif;font-size:10px;letter-spacing:1.6px;font-weight:700;color:#7c8b72;display:block;line-height:1.6}.button{display:inline-flex;align-items:center;justify-content:center;gap:13px;font-size:13px;font-weight:600;padding:13px 19px;min-height:45px;border-radius:7px;transition:background .18s,color .18s;border:1px solid transparent}.button.primary{background:#2e654d;color:#fafbee;box-shadow:0 3px 5px #2d594012}.button.primary:hover{background:#234e3b}.button.secondary{background:#fffef7;border-color:#cdd6c3}.button.secondary:hover{background:#edf2e6}.button.quiet{color:#6c7d68;padding-inline:10px}.button svg{width:17px;height:17px}.badge{display:inline-flex;align-items:center;font-size:10px;border:1px solid #d7dfd0;border-radius:4px;padding:5px 8px;letter-spacing:.2px;color:#6e8068;background:#f5f7ef}.text-link{display:inline-flex;gap:8px;align-items:center;font-size:12px;color:#6a7b65}.text-link svg{width:15px;height:15px}main{max-width:1456px;margin:auto;padding:0 56px 60px}footer{max-width:1456px;margin:auto;padding:27px 56px 35px;display:flex;justify-content:space-between;gap:20px;border-top:1px solid var(--line);color:#89917f;font-size:10px;align-items:center}.footer-brand{font-size:16px;font-weight:800;color:#52654e}.footer-brand span{font-weight:400}.version{font-size:9px;letter-spacing:1.1px}.hero{display:grid;grid-template-columns:.82fr 1.18fr;gap:35px;margin-top:39px;min-height:450px}.hero-copy{padding:25px 0 20px}.hero-eyebrow{display:flex;align-items:center;gap:8px;font-size:9px;letter-spacing:1.8px}.hero h1{font-size:clamp(36px,3.7vw,57px);font-weight:600;line-height:1.42;letter-spacing:-1.5px;margin-top:19px;color:#294633}.serif-word{color:#729369}.hero-desc{font-size:14px;color:#74816d;line-height:1.9;margin:16px 0 25px}.hero-copy .text-link{margin-left:21px}.hero-facts{display:flex;gap:27px;margin-top:35px;color:#7f8b77;font-size:10px}.hero-facts span{display:flex;align-items:center;gap:9px}.hero-facts span+span{border-left:1px solid #d8dfcf;padding-left:20px}.hero-facts b{font-size:18px;letter-spacing:-.6px;color:#4e6750;font-weight:600}.hero-visual{position:relative;border:1px solid #d8dfce;background:#eff1e9;border-radius:12px;overflow:hidden;min-width:0;box-shadow:0 8px 25px #38593907}.visual-top{position:absolute;z-index:2;top:20px;left:22px;right:22px;display:flex;align-items:center;justify-content:space-between;gap:8px}.visual-top>span:first-child{display:flex;align-items:center;gap:7px;font-size:9px;font-weight:600;letter-spacing:1.5px;color:#7e8d75}.visual-top svg{width:16px;height:16px}.stage{position:relative;overflow:hidden;background:#eff1e9;isolation:isolate}.stage>canvas{display:block;width:100%;height:100%;touch-action:none}.hero-stage{height:376px}.hero-model-caption{padding:0 22px 17px;display:flex;align-items:center;justify-content:space-between}.hero-model-caption b{display:block;font-size:14px;letter-spacing:.1px;color:#526a50}.hero-model-caption small{display:block;font-size:9px;color:#87947f;margin-top:5px}.scene-status{position:absolute;left:20px;bottom:20px;font-size:8px;letter-spacing:1.5px;color:#829378;pointer-events:none}.hero-stage .scene-status{bottom:9px;left:23px;font-size:7px}.scene-labels{position:absolute;inset:0;pointer-events:none}.scene-marker{position:absolute;transform:translate(-50%,-50%);padding:5px 8px;border:1px solid #d0dbca;background:#fffff0ec;box-shadow:0 2px 9px #42563c10;border-radius:4px;font-size:8px;color:#65795e;pointer-events:auto;white-space:nowrap;max-width:200px}.scene-marker:before{content:"";display:inline-block;background:#8ea47b;width:4px;height:4px;border-radius:50%;vertical-align:middle;margin-right:6px}.scene-marker.selected{border-color:#87a478;color:#366a4c;background:#f8ffe9}.scene-marker.device{font-size:8px;letter-spacing:.7px;padding:7px 10px}.hero-stage .scene-marker{font-size:9px;padding:7px 11px}.view-buttons{display:flex;gap:5px;align-items:center}.view-buttons button{font-size:10px;padding:6px 9px;border:1px solid #d8dfce;background:#f9fbf2;border-radius:5px;min-width:29px;min-height:29px;display:flex;align-items:center;justify-content:center}.view-buttons button:hover{background:#e4eddd}.view-buttons svg{width:13px;height:13px}.learning-section{margin-top:51px}.section-heading{display:flex;justify-content:space-between;align-items:center;gap:24px;margin-bottom:24px}.section-heading h2{font-size:23px;font-weight:600;letter-spacing:-.5px;margin-top:6px}.section-heading p{font-size:12px;color:#89917f;margin-top:6px}.search-box{display:flex;align-items:center;gap:10px;border:1px solid #d7dfcf;border-radius:7px;padding:11px 13px;width:265px;font-size:11px;background:#fbfcf6;flex-shrink:0}.search-box svg{width:16px;height:16px;color:#85977b}.search-box:focus-within{outline:2px solid #90b67b;outline-offset:2px}.lesson-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.lesson-card{border:1px solid #dce2d3;border-radius:9px;background:#fdfef7;overflow:hidden;transition:transform .18s,box-shadow .18s}.lesson-card:hover{transform:translateY(-4px);box-shadow:0 10px 25px #37512f0f}.card-preview{height:144px;position:relative;background:#edf1e5;border-bottom:1px solid #e0e6d6;overflow:hidden}.card-preview>svg{width:100%;height:100%}.card-num{position:absolute;top:13px;left:16px;font-size:10px;font-weight:600;color:#88947b}.card-done{position:absolute;right:12px;top:12px;border-radius:4px;background:#e2eedb;color:#3b7354;font-size:9px;display:flex;gap:4px;align-items:center;padding:4px 7px}.card-done svg{width:12px;height:12px}.card-body{padding:18px 20px 15px}.card-body .eyebrow{font-size:9px;letter-spacing:.9px}.card-body h3{font-size:18px;letter-spacing:-.4px;font-weight:600;margin-top:5px;color:#34503b}.card-body p{font-size:10px;color:#89957f;margin-top:4px;font-family:Manrope,sans-serif}.card-meta{display:flex;justify-content:space-between;gap:10px;border-top:1px solid #e9ecdf;margin-top:18px;padding-top:12px;font-size:9px;color:#839476}.card-meta span{display:flex;gap:6px;align-items:center}.card-meta svg{width:13px;height:13px}.next-strip{display:flex;align-items:center;gap:21px;border:1px solid #d8dfcf;border-radius:8px;padding:24px 27px;background:#f0f4e9;margin-top:35px}.next-strip>div{flex:1}.next-icon{color:#729165;background:#e1ead6;border-radius:12px;width:48px;height:48px;display:grid;place-items:center}.next-icon svg{width:25px;height:25px}.next-strip h3{font-size:18px;font-weight:600;margin-top:4px}.next-strip p{font-size:11px;color:#809275;margin-top:4px}.next-strip .button{font-size:11px;white-space:nowrap}.lesson-breadcrumb{display:flex;align-items:center;gap:10px;font-size:10px;color:#839078;padding:25px 0 21px}.lesson-breadcrumb a{text-decoration:underline;text-underline-offset:3px}.lesson-type{margin-left:auto;font-size:9px;letter-spacing:1px;display:flex;align-items:center;gap:6px}.lesson-type svg{width:14px;height:14px}.lesson-heading{display:flex;justify-content:space-between;align-items:center;gap:24px;margin-bottom:26px}.lesson-heading h1{font-size:34px;font-weight:600;letter-spacing:-.8px;margin-top:5px}.lesson-heading p{font-size:12px;color:#7a8871;max-width:680px;margin-top:8px}.lesson-heading-meta{display:flex;align-items:center;gap:17px;font-size:10px;color:#8b967e;white-space:nowrap}.lesson-heading-meta span{display:flex;gap:6px;align-items:center}.lesson-heading-meta svg{width:14px;height:14px}.workbench{display:grid;grid-template-columns:minmax(0,1fr) 310px;gap:23px;align-items:start}.lab-column{min-width:0}.lab-view{background:#edf1e6;border:1px solid #d7e0cb;border-radius:10px;overflow:hidden}.lab-toolbar{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:15px 20px;border-bottom:1px solid #dce3d0}.lab-toolbar>span:first-child{display:flex;align-items:center;gap:8px;color:#6f8662;font-size:9px;letter-spacing:1.2px}.lab-toolbar svg{width:16px;height:16px}.lab-stage{height:450px}.stage-bottom{padding:11px 18px;border-top:1px solid #dde3d3;display:flex;align-items:center;justify-content:space-between;color:#8b997e;font-size:9px;gap:10px}.flow-toolbar{display:flex;gap:10px;align-items:center;padding:11px 17px;border-top:1px solid #dae2cf;font-size:9px;color:#7c9071}.flow-toolbar>button{border:1px solid #cddbc4;background:#f7faee;padding:6px 10px;border-radius:5px;display:flex;gap:6px;align-items:center;font-size:10px;white-space:nowrap}.flow-toolbar>button svg{width:12px;height:12px}.flow-toolbar select{width:66px;min-height:27px;padding:3px 6px;font-size:10px}.flow-toolbar small{font-size:8px;margin-left:auto}.selected-detail{display:flex;gap:15px;background:#f4f6eb;border:1px solid #dfe5d4;border-radius:8px;margin-top:16px;padding:20px}.detail-icon{background:#e6edda;color:#658758;border-radius:8px;width:37px;height:37px;display:grid;place-items:center;flex-shrink:0}.detail-icon svg{width:19px;height:19px}.selected-detail h3{font-size:19px;font-weight:600;margin-top:4px}.selected-detail p{font-size:11px;color:#7b8a72;margin-top:7px}.selected-detail .detail-effect{border-left:2px solid #a1ba8d;padding-left:10px;color:#5f7b51}.controls{background:#fcfdf7;border:1px solid #d9e1cf;border-radius:9px;overflow:hidden;font-size:11px}.controls-title{display:flex;justify-content:space-between;align-items:center;padding:18px 20px;font-weight:600;border-bottom:1px solid #e2e7d8;font-size:13px}.controls-title svg{width:16px;height:16px;color:#859c76}.control-block{padding:20px;border-bottom:1px solid #e7ecdf}.control-block:last-child{border-bottom:0}.control-block>.eyebrow{font-size:8px;letter-spacing:1px;margin-bottom:17px;color:#87997a}.segmented{display:flex;background:#edf1e7;border:1px solid #dce5d0;padding:3px;border-radius:6px;margin-bottom:19px}.segmented button{flex:1;padding:8px 10px;border-radius:4px;font-size:11px;color:#819273}.segmented button[aria-pressed=true]{background:#fffef6;color:#3e7051;box-shadow:0 1px 4px #48693812}.range-label{display:flex;justify-content:space-between;gap:12px;font-size:10px;color:#7a8c6e}.range-label output{font-family:Manrope,sans-serif;color:#446c4a;font-weight:600}.toggle-row{display:flex;justify-content:space-between;gap:8px;font-size:10px;color:#7f906f}.toggle-row label{display:flex;gap:4px;align-items:center}.path-buttons{display:flex;gap:5px}.path-buttons button{flex:1;display:flex;gap:5px;align-items:center;justify-content:center;border:1px solid #dce4d1;border-radius:5px;font-size:9px;padding:8px 3px;white-space:nowrap}.path-buttons button[aria-pressed=true]{background:#ecf3e3;border-color:#a9bf98;color:#426b47}.path-buttons i,.cable-legend i,.port-list i,.wire-list i{display:inline-block;width:5px;height:5px;border-radius:50%;flex-shrink:0}.path-detail{font-size:9px;line-height:1.8;color:#87987a;margin-top:13px}.path-detail ol{list-style:none;padding:0;margin:0}.path-detail li button{width:100%;display:flex;align-items:center;text-align:left;gap:8px;padding:5px;font-size:9px;border-radius:4px}.path-detail li.active button{background:#e7efdc;color:#406a46}.path-detail li span{width:16px;height:16px;display:grid;place-items:center;border:1px solid #c6d5b9;border-radius:50%;font-size:8px;flex-shrink:0}.part-list{display:flex;flex-direction:column;gap:3px}.part-list button{display:flex;align-items:center;gap:11px;padding:8px;border-radius:5px;width:100%;text-align:left;font-size:10px;color:#7c8e6f}.part-list button>span{font-size:9px;font-family:Manrope,sans-serif;color:#8c9e7d}.part-list button>svg{width:12px;height:12px;margin-left:auto;opacity:.4}.part-list button[aria-pressed=true]{background:#eaf0df;color:#416a45}.part-list button:hover{background:#f0f4e7}.quick-presets{display:flex;gap:5px;margin-top:-6px}.quick-presets button{border:1px solid #d5dfc8;border-radius:4px;padding:5px 8px;font-size:9px;color:#6c865f}.quick-presets button:hover{background:#e7efdd}.control-hint{font-size:9px;color:#879a79;margin-top:10px;line-height:1.9}.metric-pair{display:grid;grid-template-columns:1fr 1fr;border:1px solid #dce5d0;border-radius:6px;background:#f3f7ec}.metric-pair>span{display:flex;flex-direction:column;padding:13px 10px}.metric-pair>span+span{border-left:1px solid #dce5d0}.metric-pair b{font-size:24px;font-family:Manrope,sans-serif;font-weight:500;letter-spacing:-1px;color:#557846}.metric-pair small{font-size:11px;margin-left:5px;letter-spacing:0}.metric-pair label{font-size:8px;color:#8b9b7c;margin-top:4px}.metric-line{display:flex;justify-content:space-between;font-size:9px;color:#839873;margin:15px 0}.metric-line b{font-weight:500;color:#5b7d4b}.live-panel{position:absolute;right:16px;bottom:16px;width:260px;background:#253d33;border:3px solid #294439;border-radius:6px;overflow:hidden;box-shadow:0 7px 22px #34573930;z-index:3}.live-head{padding:7px;color:#bbd8b7;display:flex;justify-content:space-between;font-size:6px;gap:5px;letter-spacing:.2px}.live-head i{display:inline-block;width:4px;height:4px;background:#89d394;border-radius:50%;margin-right:3px}.live-panel canvas{display:block;width:100%;height:auto}.field-label{display:block;color:#829474;font-size:9px;margin-bottom:6px;margin-top:12px}.field-label:first-of-type{margin-top:0}.port-list{margin-top:10px;display:flex;flex-direction:column;gap:5px}.port-list button{width:100%;display:flex;align-items:center;gap:8px;font-size:9px;text-align:left;border:1px solid #dfe6d5;border-radius:5px;padding:9px 8px;background:#fbfcf7;min-height:35px}.port-list button[aria-pressed=true]{border-color:#73a37b;background:#eaf3de}.port-list button.connected:after{content:"✓";margin-left:auto;color:#3e8060}.port-list button[draggable=true]{cursor:grab}.connection-feedback{font-size:9px;color:#73876a;min-height:18px;margin-top:10px;line-height:1.7}.wire-list>div{margin-top:9px;display:flex;justify-content:space-between;gap:8px;align-items:center;font-size:8px;background:#eff5e6;padding:7px;border-radius:4px}.wire-list span{line-height:1.7}.wire-list small{display:block;font-size:8px;margin-left:8px}.wire-list i{margin-right:6px}.wire-list button{font-size:18px;line-height:1;padding:3px;min-width:24px}.switch-label{display:flex;gap:7px;align-items:center;font-size:10px;color:#6e865f;margin-bottom:15px}.control-block select{font-size:10px}.control-block input[type=text]{font-size:11px;font-family:Manrope,sans-serif}.control-block select+label,.control-block input[type=text]+label{margin-top:12px}.control-block input[type=range]+label{margin-top:0}.control-block select+.range-label,.switch-label+.range-label{margin-top:17px}.system-banner{display:flex;align-items:center;gap:7px;font-size:10px;padding:10px;border-radius:5px;line-height:1.6;margin-bottom:10px}.system-banner svg{width:14px;height:14px;flex-shrink:0}.system-banner.ready{background:#e7f1dc;color:#4c7b3b}.system-banner.not-ready{background:#f4eee2;color:#a38756}.check-list{list-style:none;padding:0;margin:0}.check-list li{display:flex;align-items:flex-start;gap:9px;padding:10px 0;border-bottom:1px solid #edf0e5}.check-list li:last-child{border-bottom:0}.check-dot{border-radius:50%;width:16px;height:16px;display:grid;place-items:center;flex-shrink:0;font-size:9px;background:#eef3e5;color:#719360}.check-list .fail .check-dot{background:#f4ebdc;color:#a18451}.check-list b{font-size:10px;font-weight:500;color:#758968}.check-list p{font-size:8px;color:#99a48b;line-height:1.8;margin-top:3px}.fault-options{display:flex;flex-direction:column;gap:6px}.fault-options button{padding:10px;border:1px solid #dde5d1;border-radius:5px;display:flex;gap:8px;align-items:center;font-size:10px;text-align:left}.fault-options button>span{font-size:8px;color:#93a284}.fault-options button[aria-pressed=true]{background:#edf3e3;border-color:#a9c095;color:#51774a}.fault-options i{font-style:normal;margin-left:auto;color:#4e8254}.test-actions{display:flex;gap:8px}.test-actions .button{font-size:10px;padding:8px 10px;min-height:33px;flex:1}.device-list{display:flex;flex-direction:column;gap:5px}.device-list button{display:flex;align-items:center;gap:9px;padding:10px 8px;border-radius:5px;text-align:left;font-size:10px;color:#7b906d}.device-list svg{width:15px;height:15px}.device-list button[aria-pressed=true]{background:#eaf2de;color:#487442}.device-list button>svg:last-child:not(:first-child){margin-left:auto}#device-detail{margin-top:16px;padding-top:15px;border-top:1px solid #e5ecd9}#device-detail h3{font-size:12px;font-weight:600;color:#68825a}#device-detail p{font-size:10px;color:#8a9b7a;margin-top:7px}.cable-legend{display:flex;flex-direction:column;gap:15px}.cable-legend>span{display:grid;grid-template-columns:8px 1fr;align-items:center;gap:3px 7px;font-size:10px}.cable-legend b{font-weight:500;color:#6a835a}.cable-legend small{grid-column:2;font-size:8px;color:#94a282}.mission-card{border:1px solid #d8e3cc;background:#fdfef7;border-radius:9px;padding:23px;margin-top:18px}.mission-heading{display:flex;gap:12px;align-items:center}.mission-icon{display:grid;place-items:center;background:#e8f1dc;border-radius:8px;min-width:34px;height:34px;color:#679357}.mission-icon svg{width:20px;height:20px}.mission-heading .eyebrow{font-size:8px;letter-spacing:1px}.mission-heading h2{font-size:16px;font-weight:600;margin-top:3px}.mission-card ol{padding-left:24px;margin:19px 0 17px;font-size:11px;color:#7c8d6e;line-height:1.8}.mission-card li{padding:4px 0 4px 4px}.mission-card li::marker{color:#9bae89;font-size:10px}.mission-status{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:20px}.mission-status span{font-size:8px;background:#f2f4e9;color:#97a188;padding:5px 8px;border-radius:4px;line-height:1.6}.mission-status span.complete{color:#59824a;background:#eaf3dd}.mission-actions{display:flex;align-items:center;gap:10px}.mission-actions .button{font-size:11px;min-height:39px;padding:9px 13px}.mission-feedback{margin-top:11px;font-size:10px;color:#699155;line-height:1.8}.mission-feedback:empty{display:none}.lesson-notes{display:grid;grid-template-columns:minmax(0,1fr) 310px;gap:24px;margin-top:34px;padding-top:30px;border-top:1px solid #dce3d1}.lesson-notes h2{font-size:22px;font-weight:600;margin:5px 0 14px}.lesson-notes>article>p{font-size:12px;color:#7a8d6c}.limitation{margin-top:22px;display:flex;align-items:flex-start;gap:11px;background:#f0f3e7;padding:17px;border-radius:6px;color:#849677}.limitation>svg{width:17px;height:17px;flex-shrink:0;margin-top:1px}.limitation b{font-size:10px;font-weight:600;color:#70865f}.limitation p{font-size:10px;margin-top:7px;color:#8b9c7b}.sources{display:flex;flex-direction:column;gap:7px;margin-top:22px;font-size:9px;color:#80976e}.sources b{font-weight:600;margin-bottom:3px}.sources a{text-decoration:underline;text-underline-offset:3px;width:fit-content}.lesson-terms details{border-bottom:1px solid #e1e8d5;padding:10px 0;font-size:11px;color:#748c63}.lesson-terms summary{cursor:pointer}.lesson-terms p{font-size:10px;color:#8b9c7a;margin-top:8px;line-height:1.9}.lesson-next{display:flex;justify-content:space-between;align-items:center;padding-top:25px;margin-top:20px;border-top:1px solid #dce4d0;font-size:12px;color:#7a8c6c}.scene-loading{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;gap:10px;font-size:12px;color:#8da17d}.scene-loading svg{width:24px;height:24px}.asset-warning{position:absolute;bottom:35px;left:15px;right:15px;font-size:8px;line-height:1.7;color:#9a8153;background:#f6f0dd;padding:6px;border-radius:4px}.fallback{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:20px}.fallback-message{text-align:center;max-width:400px}.fallback-message h3{font-size:18px;margin:8px 0}.fallback-message p{font-size:10px;color:#809375}.fallback>svg{width:90%;height:160px}.fallback-parts{display:flex;flex-wrap:wrap;justify-content:center;gap:6px}.fallback-parts button{padding:5px 8px;font-size:9px;border:1px solid #cbdac0;border-radius:5px;background:#f7fbee}.page-intro{padding:48px 0 35px;max-width:810px}.page-intro h1{font-size:36px;font-weight:600;letter-spacing:-.8px;margin-top:9px}.page-intro p{font-size:13px;color:#819572;margin-top:12px}.page-intro .search-box{margin-top:23px;width:340px}.path-current{border:1px solid #dbe5cd;border-radius:10px;padding:26px;background:#fdfef6}.path-current .section-heading{margin-bottom:16px}.path-lessons>a{display:flex;align-items:center;gap:21px;padding:22px 2px;border-top:1px solid #e2e9d6}.path-number{display:grid;place-items:center;width:41px;height:41px;border:1px solid #d2e0c4;border-radius:50%;font-family:Manrope,sans-serif;font-size:12px;color:#87a273;flex-shrink:0}.path-number.done{background:#e4efda;color:#4c7a3d;border-color:#b9d29f}.path-lessons h3{font-size:18px;font-weight:500;margin-top:3px}.path-lessons p{font-size:11px;color:#8b9d7a;margin-top:5px}.path-lessons>a>span:last-child{margin-left:auto;display:flex;align-items:center;gap:16px;font-size:10px;white-space:nowrap;color:#8a9f77}.path-lessons>a>span:last-child svg{width:17px;height:17px}.path-lessons .eyebrow{font-size:9px;letter-spacing:.6px}.planned-section{padding:45px 0 0}.planned-section h2{font-size:26px;font-weight:500;margin-top:7px}.planned-section>p{font-size:12px;color:#93a080;margin-top:10px}.curriculum-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:26px}.curriculum-grid article{padding:24px;border:1px solid #e0e7d4;border-radius:7px;background:#f3f5eb}.curriculum-grid h3{font-size:19px;font-weight:500;margin-top:6px}.curriculum-grid ol{padding-left:20px;font-size:11px;color:#8c9c79;line-height:2.3;margin-bottom:0}.glossary-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.glossary-grid article{background:#fcfdf5;border:1px solid #dae4cc;border-radius:8px;padding:22px}.glossary-grid h2{font-size:19px;font-family:Manrope,sans-serif;font-weight:600;color:#506d47}.glossary-grid p{font-size:11px;color:#879b75;margin-top:12px}.glossary-grid article>div{display:flex;flex-wrap:wrap;gap:6px;margin-top:17px}.glossary-grid a{font-size:9px;border:1px solid #dde7d0;border-radius:4px;padding:4px 7px;color:#8ba376}.progress-summary{border:1px solid #d8e4ca;border-radius:10px;background:#eff4e5;padding:32px;display:flex;gap:35px;align-items:center;margin-bottom:30px}.progress-ring{width:132px;height:132px;border-radius:50%;background:conic-gradient(#668f54 var(--progress),#dce8cf 0);display:grid;place-items:center;flex-shrink:0}.progress-ring>span{width:112px;height:112px;border-radius:50%;background:#f4f8ec;display:flex;flex-direction:column;align-items:center;justify-content:center}.progress-ring b{font-size:36px;color:#58784b;font-family:Manrope,sans-serif;font-weight:500}.progress-ring small{font-size:10px;color:#94a782}.progress-summary h2{font-size:25px;font-weight:500;margin-top:7px}.progress-summary p{font-size:11px;color:#8fa67a;margin:10px 0 17px}.progress-summary .button{font-size:11px;padding:9px 14px;min-height:37px}.progress-reset{padding-top:25px;font-size:11px;color:#96a581}.progress-reset>div{margin-top:14px}.empty-state{padding:35px;border:1px dashed #c5d5b3;border-radius:7px;color:#8ba275;font-size:13px;grid-column:1/-1}@media(min-width:1500px){.hero-stage{height:425px}.hero-copy{padding-top:37px}.lab-stage{height:515px}.workbench,.lesson-notes{grid-template-columns:minmax(0,1fr) 330px}}@media(max-width:1150px){.topbar{padding:0 30px;gap:15px}.topbar nav a{padding:10px;font-size:11px}.topbar nav{gap:2px}main{padding:0 30px 45px}footer{padding:25px 30px}.hero{gap:22px;grid-template-columns:.9fr 1.1fr;min-height:410px}.hero-copy{padding-top:10px}.hero h1{font-size:43px}.hero-desc{font-size:12px}.hero-facts{gap:13px;font-size:8px}.hero-facts span+span{padding-left:13px}.hero-copy .text-link{margin-left:10px;font-size:10px}.hero-copy .button{font-size:11px}.hero-stage{height:348px}.workbench,.lesson-notes{grid-template-columns:minmax(0,1fr) 280px;gap:17px}.control-block{padding:17px}.lab-stage{height:400px}.live-panel{width:210px}.flow-toolbar small{display:none}.scene-marker.device{font-size:7px;padding:5px 7px}.lesson-heading-meta{flex-direction:column;align-items:flex-end;gap:8px}.selected-detail h3,.card-body h3{font-size:17px}.hero-facts b{font-size:16px}}@media(max-width:880px){.topbar{height:auto;min-height:92px;flex-wrap:wrap;padding:17px 25px 0;gap:17px}.brand{font-size:22px}.brand-mark{width:35px;height:35px}.brand-mark svg{width:25px;height:25px}.progress-pill{margin-left:auto}.topbar nav{order:3;flex-basis:100%;justify-content:center;gap:10px;padding-bottom:10px}.topbar nav a{padding:8px 16px}.hero{grid-template-columns:1fr 1fr;gap:15px;margin-top:27px}.hero h1{font-size:35px}.hero-copy .button{padding:10px 12px}.hero-copy .text-link{display:flex;width:fit-content;margin:12px 0 0}.hero-facts{gap:10px;margin-top:25px}.hero-facts span{flex-direction:column;gap:3px;align-items:flex-start}.hero-facts span+span{padding-left:10px}.hero-stage{height:321px}.visual-top{top:15px;left:15px;right:15px}.visual-top .badge{display:none}.hero-model-caption{padding:0 15px 15px}.hero-model-caption b{font-size:12px}.hero-model-caption small{font-size:7px}.hero-stage .scene-status{font-size:6px}.lesson-grid{gap:15px;grid-template-columns:repeat(2,1fr)}.learning-section{margin-top:33px}.section-heading h2{font-size:20px}.search-box{width:230px}.section-heading{align-items:flex-end}.workbench{grid-template-columns:minmax(0,1fr) 255px;gap:13px}.lab-stage{height:360px}.control-block{padding:15px}.scene-marker.device{font-size:6px;padding:4px}.live-panel{width:180px}.stage-bottom{flex-wrap:wrap;font-size:8px;padding:10px}.stage-bottom>.view-buttons{margin-left:auto}.lab-toolbar{padding:12px;flex-wrap:wrap}.lab-toolbar .badge{font-size:8px;padding:3px 5px}.selected-detail{padding:14px;gap:10px}.selected-detail p{font-size:10px}.mission-card{padding:16px}.mission-heading h2{font-size:14px}.mission-card ol{font-size:10px}.lesson-heading h1{font-size:29px}.lesson-heading p{font-size:11px}.lesson-notes{grid-template-columns:1fr 255px;gap:20px}.curriculum-grid,.glossary-grid{grid-template-columns:repeat(2,1fr)}.next-strip{padding:20px;gap:14px}.next-strip h3{font-size:15px}.next-strip p{font-size:10px}.next-strip .button{font-size:10px;padding:10px}.next-icon{width:40px;height:40px}.page-intro h1{font-size:31px}.path-lessons p{font-size:10px}.path-current{padding:20px}}@media(max-width:650px){.topbar{padding:15px 17px 0;gap:12px}.topbar nav{gap:0;justify-content:space-between}.topbar nav a{font-size:10px;gap:5px;padding:9px 10px}.topbar nav svg{width:14px;height:14px}.progress-pill{font-size:9px;padding:7px 9px}.progress-pill>span:nth-child(2){display:none}.progress-pill b{margin-left:0}.brand{font-size:21px}.brand small{font-size:6px;letter-spacing:1.7px}main{padding:0 18px 34px}footer{padding:22px 18px;flex-wrap:wrap;gap:10px;font-size:8px}.version{font-size:7px;margin-left:auto}.footer-brand{font-size:13px}.hero{grid-template-columns:1fr;gap:24px;margin-top:23px}.hero-copy{padding:0 2px}.hero-eyebrow{font-size:8px;letter-spacing:1.5px}.hero h1{font-size:42px;margin-top:12px;line-height:1.4}.hero-desc{font-size:12px;margin-top:12px;margin-bottom:19px}.hero-copy .text-link{display:inline-flex;margin:0 0 0 13px;font-size:9px}.hero-copy .button{padding:11px 14px}.hero-facts{margin-top:23px;gap:22px}.hero-facts span{flex-direction:row;align-items:center;font-size:9px;gap:7px}.hero-facts span+span{padding-left:15px}.hero-facts b{font-size:16px}.hero-stage{height:280px}.visual-top>span:first-child{font-size:8px}.visual-top .badge{display:inline-flex;font-size:7px}.hero-model-caption{padding:0 16px 14px}.hero-model-caption b{font-size:12px}.hero-model-caption small{font-size:8px}.hero-stage .scene-status{left:16px;font-size:6px}.hero-stage .scene-marker{font-size:8px}.learning-section{margin-top:34px}.section-heading{flex-direction:column;align-items:flex-start;gap:17px;margin-bottom:20px}.section-heading h2{font-size:20px;line-height:1.5}.section-heading p{font-size:10px}.section-heading .search-box{width:100%;font-size:10px}.lesson-grid{gap:12px}.card-preview{height:106px}.card-body{padding:13px 12px}.card-body .eyebrow{font-size:8px;letter-spacing:.4px}.card-body h3{font-size:14px;line-height:1.5;min-height:42px}.card-body p{font-size:8px}.card-num{top:8px;left:10px;font-size:8px}.card-meta{font-size:7px;margin-top:12px;padding-top:9px;gap:3px}.card-meta span{gap:3px}.card-meta svg{width:10px;height:10px}.card-meta span:last-child svg{display:none}.card-done{font-size:7px;padding:3px 5px;top:7px;right:7px}.card-done svg{width:9px;height:9px}.next-strip{flex-wrap:wrap;gap:12px;padding:18px;margin-top:25px}.next-strip>div{flex-basis:calc(100% - 55px)}.next-strip>.button{margin-left:52px}.next-strip .eyebrow{font-size:7px;letter-spacing:.8px}.next-strip h3{font-size:14px}.next-strip p{font-size:9px}.next-icon{width:37px;height:37px}.lesson-breadcrumb{font-size:8px;padding:20px 0 16px}.lesson-type{font-size:7px;letter-spacing:.3px}.lesson-type svg{width:11px;height:11px}.lesson-heading{align-items:flex-start;gap:12px;margin-bottom:21px}.lesson-heading h1{font-size:26px;line-height:1.5}.lesson-heading .eyebrow{font-size:8px;letter-spacing:1px}.lesson-heading p{font-size:10px}.lesson-heading-meta{font-size:8px;padding-top:7px;gap:8px}.lesson-heading-meta svg{width:11px;height:11px}.workbench{display:flex;flex-direction:column;gap:18px}.lab-column{width:100%}.lab-stage{height:335px}.lab-toolbar{flex-wrap:nowrap;padding:13px}.lab-toolbar>span:first-child{font-size:8px}.lab-toolbar .badge{font-size:7px;padding:4px 6px}.live-panel{width:171px;right:11px;bottom:30px}.live-head{font-size:5px;padding:6px 5px}.stage-bottom{padding:9px 10px;font-size:7px}.view-buttons button{font-size:8px;padding:5px 7px;min-height:27px;min-width:27px}.view-buttons svg{width:11px;height:11px}.scene-status{font-size:6px;left:13px;bottom:13px;letter-spacing:.6px}.scene-marker{font-size:6px;padding:4px 5px}.scene-marker.device{font-size:6px;letter-spacing:.1px;padding:4px 5px}.scene-marker:before{width:3px;height:3px;margin-right:3px}.selected-detail{padding:15px;gap:10px}.selected-detail .eyebrow{font-size:7px;letter-spacing:.9px}.selected-detail h3{font-size:17px}.selected-detail p{font-size:10px}.controls{width:100%;order:2}.controls-title{padding:16px 18px}.control-block{padding:19px}.control-block>.eyebrow{font-size:9px}.range-label{font-size:11px}.control-block input[type=range]{margin-top:18px;margin-bottom:25px;height:7px}.toggle-row{font-size:11px;justify-content:flex-start;gap:25px}.segmented button{font-size:12px}.part-list{display:grid;grid-template-columns:1fr 1fr;gap:5px}.part-list button{padding:11px 8px;font-size:10px}.path-buttons{gap:8px}.path-buttons button{font-size:10px;padding:10px}.path-detail{font-size:10px}.path-detail li button{font-size:10px;padding:8px}.port-list{display:grid;grid-template-columns:1fr 1fr;gap:7px}.port-list button{font-size:9px;min-height:47px;line-height:1.6;padding:9px 7px}.control-hint,.field-label{font-size:10px}.control-block select{font-size:12px;min-height:42px}.control-block input[type=text]{font-size:13px;min-height:43px}.switch-label{font-size:12px}.system-banner,.check-list b{font-size:11px}.check-list p{font-size:10px}.device-list button{font-size:12px}.check-list li{padding:12px 0}.device-list{display:grid;grid-template-columns:1fr 1fr}.device-list button{padding:10px;font-size:10px;line-height:1.7}.cable-legend{display:grid;grid-template-columns:1fr 1fr}.cable-legend small{font-size:9px}.mission-card{padding:18px}.mission-heading h2{font-size:15px;line-height:1.7}.mission-card ol{font-size:11px;line-height:1.8}.mission-status span{font-size:9px}.mission-feedback{font-size:11px}.mission-actions{gap:7px}.lesson-notes{grid-template-columns:1fr;gap:28px;margin-top:27px;padding-top:25px}.lesson-notes h2{font-size:21px}.lesson-notes>article>p{font-size:12px}.limitation p,.sources{font-size:10px}.lesson-terms details{font-size:12px}.lesson-terms p{font-size:11px}.lesson-next{font-size:10px}.lesson-next .button{font-size:11px}.flow-toolbar{padding:10px;font-size:8px;gap:8px}.flow-toolbar select{font-size:10px;min-height:28px}.page-intro{padding:32px 0 25px}.page-intro h1{font-size:28px;line-height:1.5}.page-intro p{font-size:11px}.page-intro .search-box{width:100%}.path-current{padding:18px}.path-current .section-heading{gap:9px}.path-current h2{font-size:18px}.path-lessons>a{gap:12px;padding:18px 0;align-items:flex-start}.path-number{width:31px;height:31px;font-size:10px}.path-lessons h3{font-size:16px}.path-lessons p{font-size:10px;line-height:1.8}.path-lessons>a>span:last-child{font-size:8px;gap:2px;margin-top:7px}.path-lessons>a>span:last-child svg{display:none}.path-lessons .eyebrow{font-size:8px}.planned-section{padding-top:30px}.planned-section h2{font-size:22px}.planned-section>p{font-size:11px}.curriculum-grid{gap:12px;margin-top:20px}.curriculum-grid article{padding:17px 13px}.curriculum-grid .eyebrow{font-size:7px;letter-spacing:.7px}.curriculum-grid h3{font-size:16px}.curriculum-grid ol{font-size:10px;line-height:2.1;padding-left:17px}.glossary-grid{grid-template-columns:1fr;gap:12px}.glossary-grid article{padding:19px}.glossary-grid p{font-size:12px}.progress-summary{padding:20px;gap:20px;align-items:flex-start}.progress-ring{width:85px;height:85px}.progress-ring>span{width:71px;height:71px}.progress-ring b{font-size:26px}.progress-ring small{font-size:8px}.progress-summary h2{font-size:18px;line-height:1.6}.progress-summary .eyebrow{font-size:8px;letter-spacing:.7px}.progress-summary p,.progress-summary .button{font-size:10px}.test-actions .button{font-size:11px;min-height:39px}.fault-options button{font-size:11px;padding:12px}.fallback-message h3{font-size:16px}.fallback-message p{font-size:9px}.fallback>svg{height:130px}.fallback-parts button{font-size:8px}.fallback{padding:14px}}.card-preview{height:203px}.card-stage{width:100%;height:100%}.card-body{display:block}.lesson-card:hover{transform:none}.card-num,.card-done{pointer-events:none;z-index:3}.card-preview-tools{position:absolute;bottom:9px;left:11px;right:11px;display:flex;justify-content:space-between;gap:6px;pointer-events:none;z-index:4}.card-preview-tools button{pointer-events:auto;background:#fffff0ed;color:#708963;border:1px solid #ccdac0;border-radius:5px;font-size:8px;padding:5px 7px;min-height:27px;box-shadow:0 1px 4px #4266340d;display:flex;align-items:center;justify-content:center}.card-preview-tools button:hover{background:#e4efd8}.card-preview-tools svg{width:11px;height:11px}.card-preview .fallback{padding:4px}.card-preview .fallback-message h3,.card-preview .fallback-message p,.card-preview .fallback-parts{display:none}.card-preview .fallback-message .eyebrow{font-size:7px}.card-preview .fallback>svg{height:110px;max-width:100%}.card-preview .asset-warning{font-size:6px;bottom:38px;left:8px;right:8px;padding:3px}.card-preview .scene-loading{font-size:9px}.card-preview .scene-loading svg{width:17px;height:17px}@media(max-width:650px){.card-preview{height:152px}.card-preview-tools{left:6px;right:6px;bottom:6px}.card-preview-tools button{font-size:6px;padding:4px 5px;min-height:25px}.card-preview-tools button:first-child{max-width:calc(100% - 28px);line-height:1.5}.card-preview-tools button:last-child{min-width:25px;flex-shrink:0}.card-preview .fallback>svg{height:90px}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}.lesson-card:hover{transform:none}}.power-source-panel{padding:13px;background:#eef3e5;border:1px solid #d9e4cd;border-radius:6px;margin-bottom:19px}.power-source-panel .field-label{margin-top:10px}.power-source-panel .field-label:first-child{margin-top:0}.power-source-panel .range-label{margin-top:16px}.power-budget{display:flex;align-items:center;justify-content:space-between;gap:7px;flex-wrap:wrap;font-size:9px;color:#789364;border-top:1px solid #d5e2c7;padding-top:11px}.power-budget b{font-family:Manrope,sans-serif;font-size:13px;font-weight:600}.power-budget small{font-size:8px;flex-basis:100%;color:#8b9f79;line-height:1.7}.power-budget.overloaded{color:#ae7c48}.power-budget.overloaded b{color:#b27841}@media(max-width:650px){.workbench .lab-column{display:contents}.workbench .lab-view{order:1;width:100%}.workbench .selected-detail{order:2;width:100%;margin-top:0}.workbench .controls{order:3}.workbench .mission-card{order:4;width:100%;margin-top:0}}.transport-panel{padding:13px;background:#f2f1e5;border:1px solid #e1ddc8;border-radius:6px;margin-bottom:17px}.transport-panel .field-label{margin-top:12px}.transport-panel .field-label:first-child{margin-top:0}.transport-panel .range-label{margin-top:17px}.transport-panel .switch-label{font-size:9px;line-height:1.8;margin-bottom:9px}.transport-panel .switch-label input{flex-shrink:0}.fiber-explainer{padding:12px 0 3px;color:#997e54}.fiber-explainer b{font-size:11px;font-weight:600}.fiber-explainer p{font-size:9px;margin-top:6px;line-height:1.9}.optical-info-buttons{display:flex;gap:6px;margin-top:12px}.optical-info-buttons button{border:1px solid #dbd9c4;border-radius:4px;padding:6px;background:#faf9ee;font-size:8px;color:#918565}.card-preview-tools button[data-preview-fiber]{margin-left:auto;font-family:Manrope,sans-serif;color:#9a7848;min-width:29px}.card-preview-tools button[data-preview-reset]{flex-shrink:0}@media(max-width:650px){.transport-panel .switch-label,.fiber-explainer p{font-size:10px}.card-preview-tools button:first-child{flex-shrink:1}.card-preview-tools button[data-preview-fiber]{font-size:6px;min-width:24px}}.journey-steps{display:grid;gap:8px;margin-top:16px}.journey-steps button{display:flex;gap:12px;align-items:center;text-align:left;padding:12px;border:1px solid #d5e0ca;border-radius:7px;background:#f7f8f0;color:#60774f}.journey-steps button>span{font-family:Manrope,sans-serif;font-size:23px;color:#97b389}.journey-steps button b{display:block;font-size:12px}.journey-steps button small{display:block;font-size:8px;letter-spacing:1px;margin-top:3px}.journey-steps button[aria-pressed=true]{background:#e0ecd7;border-color:#94b78b}.journey-steps button[aria-pressed=true]>span{color:#3c805e}.ptz-controls{margin-top:15px;padding-top:15px;border-top:1px solid #d5e0ca}.toggle-row{display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between}.toggle-row label{display:flex;align-items:center;gap:6px;white-space:nowrap}.overview-workbench{display:flex;flex-direction:column}.overview-workbench .lab-column{display:contents}.overview-workbench .lab-view{order:1;width:100%}.overview-workbench .lab-stage{height:500px}.overview-workbench .controls{order:2;width:100%}.overview-workbench #control-content{display:grid;grid-template-columns:1.15fr 1fr 1fr}.overview-workbench .selected-detail{order:3;width:100%;margin-top:0}.overview-workbench .mission-card{order:4;width:100%;margin-top:0}.overview-workbench .control-block+.control-block{border-top:0;border-left:1px solid #dce4d2}@media(max-width:650px){.overview-workbench .lab-stage{height:335px}.overview-workbench #control-content{grid-template-columns:1fr}.overview-workbench .control-block+.control-block{border-left:0;border-top:1px solid #dce4d2}}
