/* Visual lessons use the site's paper, forest and mint palette. */
img{max-width:100%;height:auto}.count-label,.demo-note{color:#62726b}.count-label{font-size:14px}.section-lead,.lesson-intro{max-width:820px;line-height:1.85;margin:0 0 28px}.screen-intro-grid{display:grid;grid-template-columns:1fr 1fr;gap:36px}.screen-intro-grid>a{color:inherit;text-decoration:none}.screen-intro h3{font-size:25px;margin:25px 0 12px}.screen-intro p{line-height:1.8}.intro-screen{position:relative;background:#dce7df;padding:28px 18px 20px;border:1px solid #c7d6cd;border-radius:12px;overflow:hidden}.intro-screen img{width:100%;aspect-ratio:1.8;object-fit:contain;filter:drop-shadow(0 9px 9px #172a2233);transition:transform .35s}.intro-screen:hover img{transform:scale(1.025)}.image-badge{position:absolute;left:18px;top:12px;background:#102522;color:#fff;font:12px/1.3 system-ui;padding:6px 10px;border-radius:4px}.screen-intro-grid>a:nth-child(2) .intro-screen{background:#e6e7e2}.walkthrough{padding:70px 0}.shot-tabs{display:grid;grid-template-columns:repeat(5,1fr);gap:8px;margin:28px 0 22px}.shot-tabs button{border:1px solid #cbd7cd;background:transparent;border-radius:6px;padding:12px 10px;text-align:left;cursor:pointer;font:inherit;font-size:14px;line-height:1.6;color:#354d40}.shot-tabs button span{display:block;color:#6e8075;font:12px/1.4 ui-monospace,monospace;margin-bottom:6px}.shot-tabs button[aria-pressed=true]{background:#143e32;color:#fff;border-color:#143e32}.shot-tabs button[aria-pressed=true] span{color:#aae4c1}.shot-panel{display:grid;grid-template-columns:minmax(0,1.9fr) minmax(260px,1fr);background:#e7eee8;border:1px solid #c9d7cc;border-radius:10px;overflow:hidden}.shot-panel[hidden]{display:none}.screen-frame{margin:0;padding:22px;min-width:0;display:flex;flex-direction:column;justify-content:center}.zoom-screen{position:relative;display:flex;align-items:center;justify-content:center;width:100%;border:0;padding:0;background:#d5dfd8;cursor:zoom-in;min-height:220px;aspect-ratio:1.65}.zoom-screen img{display:block;width:100%;height:100%;max-height:450px;object-fit:contain}.zoom-label{position:absolute;right:8px;bottom:8px;background:#102522e6;color:#fff;padding:5px 10px;border-radius:4px;font-size:12px}.screen-frame figcaption{font-size:12px;line-height:1.6;color:#556a5c;margin-top:12px}.shot-explainer{padding:30px 26px;background:#f5f7f2}.shot-explainer h3{font-size:25px;line-height:1.4;margin:15px 0}.shot-explainer p{line-height:1.8}.shot-explainer ol{list-style:none;counter-reset:step;padding:0;margin:24px 0}.shot-explainer li{counter-increment:step;display:flex;gap:12px;margin:15px 0;line-height:1.7;font-size:15px}.shot-explainer li:before{content:counter(step);flex-shrink:0;display:grid;place-items:center;background:#dceadd;color:#164932;width:24px;height:24px;border-radius:50%;font-size:12px;margin-top:2px}.shot-explainer .button{font-size:14px;padding:12px 16px}.walk-controls{display:flex;justify-content:center;align-items:center;gap:24px;margin-top:22px}.walk-controls span{min-width:50px;text-align:center;font:14px ui-monospace,monospace}.walk-controls .button{padding:10px 22px}.signal-lesson{padding:50px 40px;background:#112b24;color:#eef4ed;border-radius:12px;margin:50px 0}.signal-lesson .eyebrow{color:#b4d5bf}.signal-lesson h2{color:#f3f5e9;font-size:34px;line-height:1.5}.signal-lesson .count-label,.signal-lesson .demo-note{color:#a5bbae}.signal-track{display:grid;grid-template-columns:repeat(5,1fr);gap:10px;margin:32px 0}.signal-track button{position:relative;color:#c2d5c8;background:#1b3930;border:1px solid #3e5b4a;border-radius:8px;min-width:0;padding:18px 12px;text-align:left;cursor:pointer;transition:background .3s,border-color .3s}.signal-track button[aria-pressed=true]{background:#c0e7c8;color:#102b21;border-color:#c0e7c8}.signal-track button.is-past{border-color:#7db68e}.signal-track button:not(:last-child):after{content:'';position:absolute;right:-11px;top:50%;width:10px;height:2px;background:#759280}.signal-track strong,.signal-track span{display:block}.stage-number{font:12px ui-monospace,monospace;opacity:.75}.stage-glyph{font:32px/1.6 Georgia,serif;height:56px}.signal-track strong{font-size:17px;margin:2px 0 8px}.signal-track button>span:last-child{font-size:12px}.signal-detail{display:grid;grid-template-columns:2fr 1fr;gap:40px;align-items:center;border-top:1px solid #3b5145;padding:28px 0;min-height:180px}.signal-detail h3{font-size:25px;margin:10px 0}.signal-detail p{line-height:1.85;color:#cfddd1;margin:12px 0}.signal-proof{padding:20px 24px;background:#203d30;display:flex;flex-direction:column;gap:12px;position:relative;overflow:hidden;border-radius:8px}.signal-proof>span:first-child{font-size:12px;color:#b0c8b6}.signal-proof strong{font-size:22px;color:#cbf0ca}.signal-packet{height:4px;background:#91d7a9;width:24%;margin-top:10px;border-radius:3px}.is-playing .signal-packet{animation:packet 2s ease-in-out infinite}.signal-controls{display:flex;flex-wrap:wrap;align-items:center;gap:14px}.signal-controls .button{padding:12px 20px}.signal-controls .outline{color:#eff5ef;border-color:#789581}.signal-controls>span{font-size:14px;color:#b1c9b8}.signal-controls a{color:#c6e8cc;margin-left:auto;font-size:14px}.signal-lesson .demo-note{font-size:13px;margin-top:22px;line-height:1.7}.manual-overview{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin:42px 0 25px}.manual-overview>a{display:block;padding:36px;background:#e6eee5;border-top:4px solid #34664a;color:inherit;text-decoration:none}.manual-overview h2{font-size:30px;margin:20px 0 14px}.manual-overview p{line-height:1.8}.manual-overview>a>span:last-child{display:block;color:#245b3b;margin-top:25px;font-weight:650}.manual-path{padding:55px 0}.manual-task-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:30px}.manual-task{color:inherit;text-decoration:none;border-bottom:1px solid #c6d3c7;padding-bottom:24px}.manual-task-image{position:relative;background:#dfe8df;padding:18px 12px 12px;border-radius:5px}.manual-task-image img{display:block;width:100%;aspect-ratio:1.7;object-fit:contain}.manual-task-image>span{position:absolute;left:10px;top:8px;background:#19392b;color:#def4df;border-radius:3px;padding:3px 7px;font:12px ui-monospace,monospace}.manual-task h3{font-size:22px;margin:20px 0 10px}.manual-task p{font-size:15px;line-height:1.7}.manual-task-link{font-size:14px;color:#315e3f}.archive-section{padding:50px 0 75px}.archive-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:32px}.archive-card{background:#fff;border:1px solid #d3ded3;border-radius:8px;overflow:hidden}.archive-image{display:block;position:relative;padding:22px 22px 0;background:#e4ebe4}.archive-image img{display:block;width:100%;height:220px;object-fit:contain;object-position:top}.archive-image>span{position:absolute;bottom:0;left:22px;color:#fff;background:#142f25;padding:5px 10px;font-size:12px}.archive-copy{padding:30px}.archive-meta{display:flex;justify-content:space-between;color:#536c57;font-size:13px;gap:15px}.archive-copy h3{font-size:24px;line-height:1.5;margin:17px 0}.archive-copy h3 a{color:#193b29;text-decoration:none}.archive-copy p,.archive-copy li{font-size:16px;line-height:1.85;color:#526253}.archive-copy ul{padding-left:21px}.archive-actions{display:flex;gap:22px;border-top:1px solid #e2e9df;margin-top:22px;padding-top:20px;font-size:14px}.archive-actions a{color:#285b38}.image-dialog{width:min(1500px,96vw);max-width:96vw;max-height:94vh;padding:20px;border:1px solid #8fa69c;border-radius:10px;background:#f2f6ef;color:#183526}.image-dialog::backdrop{background:#091c17df}.dialog-toolbar{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:16px}.dialog-toolbar button{padding:9px 18px;cursor:pointer}.dialog-image-wrap{overflow:auto;max-height:72vh;background:#dbe5dc}.dialog-image-wrap img{display:block;max-width:100%;height:auto;margin:auto}.image-dialog p{font-size:13px;line-height:1.6}.image-dialog:focus-visible{outline:0}.walkthrough button:focus-visible,.signal-lesson button:focus-visible,.image-dialog button:focus-visible{outline:3px solid #df962b;outline-offset:3px}.manual-bridge-card{padding:30px 35px;background:#e5eee4;margin:30px 0}.manual-bridge-card h3{margin:0 0 12px}.manual-bridge-card p{line-height:1.8}.manual-bridge-card a{color:#28583a}.learning-link{display:flex;gap:20px;flex-wrap:wrap;margin-top:24px}.home-archive{margin-top:10px}.home-archive .archive-image img{height:190px}.home-archive .archive-grid{grid-template-columns:repeat(3,1fr)}.home-archive .archive-copy{padding:24px}.home-archive .archive-copy h3{font-size:22px}.home-archive .archive-copy ul{display:none}.home-archive .archive-actions{flex-wrap:wrap;gap:12px}.home-archive .archive-copy p{font-size:15px}
@keyframes packet{0%{transform:translateX(-120%);opacity:0}20%{opacity:1}80%{opacity:1}100%{transform:translateX(500%);opacity:0}}
@media(max-width:1050px){.shot-panel{grid-template-columns:1fr}.shot-explainer{display:grid;grid-template-columns:1fr 1fr;column-gap:26px}.shot-explainer .eyebrow,.shot-explainer h3,.shot-explainer p,.shot-explainer .button{grid-column:1}.shot-explainer ol{grid-column:2;grid-row:1/5;margin:0}.shot-explainer .button{justify-self:start}.home-archive .archive-grid{grid-template-columns:1fr 1fr}.header{gap:14px}.header nav{gap:16px}.signal-lesson{padding:35px 26px}}
@media(max-width:760px){.screen-intro-grid,.manual-overview,.archive-grid,.manual-task-grid,.home-archive .archive-grid{grid-template-columns:1fr}.screen-intro-grid{gap:32px}.intro-screen{padding:24px 12px 12px}.screen-intro h3{font-size:22px}.walkthrough{padding:40px 0}.shot-tabs{grid-template-columns:repeat(2,1fr);gap:7px}.shot-tabs button{padding:10px 12px;font-size:14px}.shot-tabs button span{display:inline;margin-right:8px}.screen-frame{padding:12px}.zoom-screen{min-height:150px}.shot-explainer{display:block;padding:24px 20px}.shot-explainer ol{margin:22px 0}.shot-explainer h3{font-size:24px}.signal-lesson{padding:26px 18px;margin:35px 0}.signal-lesson h2{font-size:27px}.signal-track{grid-template-columns:repeat(5,minmax(105px,1fr));overflow-x:auto;padding:4px 2px 14px;scroll-snap-type:x proximity}.signal-track button{scroll-snap-align:start;padding:12px 8px}.signal-track strong{font-size:15px}.stage-glyph{font-size:26px;height:45px}.signal-detail{grid-template-columns:1fr;gap:18px;min-height:0}.signal-controls{gap:12px}.signal-controls a{margin:8px 0 0;width:100%}.signal-proof{padding:16px}.signal-proof strong{font-size:20px}.manual-overview>a{padding:28px}.manual-path{padding:35px 0}.manual-task-grid{gap:28px}.manual-task-image img{max-height:210px}.archive-copy{padding:24px}.archive-copy h3{font-size:22px}.archive-image img{height:180px}.archive-meta{font-size:12px}.archive-section{padding:30px 0 50px}.dialog-toolbar strong{font-size:16px}.image-dialog{padding:12px}.dialog-image-wrap img{max-width:none;width:auto;max-height:none;min-width:100%}.dialog-image-wrap{max-height:66vh}.home-archive .archive-card:last-child{display:block}.manual-bridge-card{padding:25px}.walk-controls{gap:18px}.count-label{font-size:13px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important}.signal-packet{animation:none!important}}
.observation-player{padding:20px 0;border-top:1px solid #d4ded2}.observation-actions{display:flex;align-items:center;gap:20px}.observation-actions label{white-space:nowrap;font-size:14px}.observation-actions .button{padding:10px 18px;white-space:nowrap;font-size:14px}.observation-actions input{min-width:80px;flex:1;accent-color:#356c48}.observation-player output{display:block;color:#456348;font-size:14px;line-height:1.8;margin-top:14px}@media(max-width:760px){.observation-actions{gap:12px;flex-wrap:wrap}.observation-actions input{width:100%;flex-basis:100%}}