body.home{position:relative}.masthead.masthead-wide{justify-content:space-between}.masthead .mast-nav a{min-height:40px;font-family:var(--display);letter-spacing:.11em;text-transform:uppercase;color:var(--blue);text-underline-offset:5px;align-items:center;font-size:13.5px;font-weight:700;-webkit-text-decoration:underline #2f5a9e59;text-decoration:underline #2f5a9e59;text-decoration-thickness:1.5px;display:inline-flex}.masthead .mast-nav a:visited{color:var(--blue)}.masthead .mast-nav a:hover{color:var(--blue-deep);text-decoration-color:currentColor}.hero{max-width:var(--measure);padding:22px var(--gutter) 0;margin:0 auto}.hook{font-family:var(--body);letter-spacing:normal;color:var(--ink);text-wrap:pretty;margin:0 0 10px;font-size:18px;font-weight:500;line-height:1.6}.hook:after{content:none}.standfirst{max-width:74ch;color:var(--ink-soft);text-wrap:pretty;margin:0;font-size:17px;line-height:1.6}.standfirst+.standfirst{margin-top:10px}.spec-link{color:var(--ink-soft);margin:16px 0 0;font-size:16px;line-height:1.6}.spec-link a{color:var(--link);text-underline-offset:3px;text-decoration:underline}.spec-link a:visited{color:var(--link)}.spec-link a:hover{color:var(--blue-deep)}.walkthrough-heading{max-width:var(--measure);padding:0 var(--gutter);justify-content:space-between;align-items:center;gap:16px;margin:24px auto 22px;display:flex}.sec-hed{font:700 26px/1.2 var(--display);letter-spacing:-.01em;color:var(--blue);margin:0;position:relative}.sec-hed:after{content:"";background:var(--marker);border-radius:4px;width:2.6em;height:8px;position:absolute;bottom:-10px;left:-2px;transform:rotate(-4deg)}.walkthrough-nav{flex:none;align-items:center;gap:6px;display:flex}.browser-nav{width:40px;height:40px;color:var(--blue);cursor:pointer;background:0 0;border:1px solid #0000;border-radius:7px;place-items:center;padding:0;transition:background .15s,border-color .15s;display:inline-grid}.browser-nav svg{fill:none;stroke:currentColor;stroke-width:1.7px;stroke-linecap:round;stroke-linejoin:round;width:20px;height:20px}.browser-nav:enabled:hover{background:var(--tint);border-color:#2f5a9e1f}.browser-nav:enabled:active{background:#e2e9f5}.browser-nav:disabled{color:var(--ink-soft);opacity:.35;cursor:default}.step-label{min-width:40px;color:var(--ink-soft);font:12px/1.4 var(--mono);text-align:center;white-space:nowrap;font-variant-numeric:tabular-nums}.step-label span{opacity:.55;margin:0 2px}.stage-wrap{max-width:var(--measure);padding:0 var(--gutter);margin:0 auto;position:relative}.stage{background:#fff;border:1px solid #1d2a471f;border-radius:12px;position:relative;overflow:clip;box-shadow:0 1px 2px #1d2a470a,0 24px 48px -24px #1d2a4724;container-type:inline-size}.chrome{background:var(--tint);border-bottom:1px solid #1d2a4712;align-items:center;gap:14px;min-height:46px;padding:8px 14px;display:flex}.dots{flex:none;gap:6px;display:flex}.dots i{background:#2f5a9e38;border-radius:50%;width:8px;height:8px}.address{min-width:0;max-width:360px;color:var(--ink-soft);text-overflow:ellipsis;white-space:nowrap;background:#56638b14;border-radius:6px;flex:1;padding:4px 10px;font-size:13px;line-height:1.5;overflow:hidden}.simulation-label{color:var(--ink-soft);white-space:nowrap;flex:none;margin-left:auto;font-size:12px;line-height:1.5}.viewport{background:#edf1f8b8;height:clamp(380px,46svh,440px);padding:14px;position:relative}.demo-page{scrollbar-gutter:stable;scrollbar-width:thin;scrollbar-color:#56638b4d transparent;background:#fff;border:1px solid #1d2a4712;border-radius:8px;height:100%;padding:24px 28px;animation:.18s ease-out settle;overflow:auto}.demo-page:focus{outline:none}.demo-page:focus-visible{outline:2px solid var(--blue);outline-offset:-2px}.demo-content{min-width:0}.demo-page h2{font:700 27px/1.2 var(--display);color:var(--ink);text-wrap:balance;margin:8px 0 12px}.demo-page h2:after{content:none}.demo-page h3{font:600 18px/1.4 var(--display);color:var(--ink);margin:0}.demo-page p{margin:8px 0 14px;font-size:16px;line-height:1.55}.demo-page a{color:var(--blue);text-underline-offset:3px;font-size:16px}.page-name{color:var(--ink-soft);letter-spacing:.06em;font-size:12px;font-weight:600}.demo-columns{grid-template-columns:1fr 1.15fr;align-items:center;gap:28px;margin-top:24px;display:grid}.demo-columns>*{min-width:0}.route-image{color:#2f5a9ea6;background:#fff;border:1.5px solid #2f5a9e42;border-radius:8px;padding:14px;display:block}.route-image svg{width:100%;height:95px;display:block}.route-image>span{color:var(--ink-soft);justify-content:space-between;align-items:center;gap:12px;font-size:12px;line-height:1.5;display:flex}.route-line{opacity:.5;border-top:1px solid;flex:1;max-width:36px}.live-target{outline:1.5px solid var(--blue);outline-offset:3px;border-radius:4px;max-width:100%;padding:5px 3px;display:inline-block}.live-target:focus-visible{outline-offset:5px;outline-width:2px}.live-target:hover{background:var(--tint)}.viewport:before,.viewport:after{content:"";z-index:5;pointer-events:none;opacity:0;height:16px;transition:opacity .12s;position:absolute;left:16px;right:16px}.viewport:before{background:linear-gradient(#fff,#0000);top:15px}.viewport:after{background:linear-gradient(#0000,#fff);bottom:15px}.viewport[data-at-start=false]:before,.viewport[data-scrollable=true][data-at-end=false]:after{opacity:1}.caption{text-align:center;max-width:66ch;margin:0 auto}.steps{justify-content:center;gap:4px;margin:8px 0 4px;padding:0;list-style:none;display:flex}.steps li{margin:0}.steps button{cursor:pointer;background:0 0;border:0;border-radius:5px;place-items:center;width:40px;height:36px;padding:0;display:grid}.steps button span{background:#56638b38;border-radius:3px;width:28px;height:5px;transition:background .15s,transform .15s;display:block}.steps button:enabled span{background:#56638ba6}.steps .done button span{background:#56638bb8}.steps .here button span{background:var(--blue)}.steps button:enabled:hover span{background:var(--blue);transform:scaleY(1.4)}.steps button:disabled{cursor:default;opacity:.5}.caption-track{display:grid}.card{visibility:hidden;pointer-events:none;color:var(--ink);flex-direction:column;grid-area:1/1;justify-content:center;font-size:16px;line-height:1.55;display:flex}.card.live{visibility:visible;pointer-events:auto;animation:.18s ease-out settle}.card p{text-wrap:pretty;margin:0}.ctrl{justify-content:center;align-items:center;min-height:34px;padding-top:8px;display:flex}.ctrl .act{color:var(--blue);text-wrap:pretty;font-size:14px;font-weight:600;line-height:1.5}.replay{margin:6px 0 0;line-height:1}.replay button{min-height:36px;font:13.5px/1.4 var(--body);color:var(--ink-soft);text-underline-offset:3px;cursor:pointer;background:0 0;border:0;border-radius:4px;padding:6px 8px;text-decoration:underline}.replay button:hover{color:var(--blue-deep)}.source-materials{gap:18px;margin:20px 0;display:grid}.markable{min-width:0}.material-target{text-align:left;width:100%;color:var(--ink);font:16px/1.55 var(--body);cursor:text;-webkit-user-select:text;user-select:text;background:0 0;border:1px solid #0000;border-radius:6px;padding:8px;transition:background .15s,border-color .15s;display:block}.material-target:hover:not(:disabled){background:var(--tint);border-color:#2f5a9e4d}.material-target:disabled{opacity:1;color:var(--ink);cursor:default}.image-target{cursor:pointer;max-width:360px;padding:0}.image-material .route-image svg{height:60px}.annotation-highlight{z-index:20;pointer-events:none;position:absolute}.text-highlight{background:var(--marker-ink);mix-blend-mode:multiply;border-radius:2px}.image-highlight{border:3px solid var(--marker);border-radius:6px}.annotation-icon.annotation-indicator{z-index:42;background:var(--marker-ink);border-radius:50%;width:28px;height:28px;position:absolute}.annotation-indicator svg{width:13px;height:13px}.annotation-float{z-index:40;background:var(--paper);border:1px solid #2f5a9e3d;border-radius:9px;max-height:calc(100% - 16px);padding:12px;position:absolute;overflow:auto;box-shadow:0 5px 18px #1d2a4724}.editor-float{width:min(380px,100% - 16px)}.saved-float{width:max-content;max-width:min(320px,100% - 16px)}.annotation-editor{margin:0}.annotation-editor label{margin-bottom:7px;font-size:13px;font-weight:600;line-height:1.4;display:block}.annotation-input-row{grid-template-columns:minmax(0,1fr) 32px 32px;align-items:end;gap:7px;display:grid}.annotation-input-row textarea{width:100%;min-width:0;min-height:72px;color:var(--ink);font:16px/1.4 var(--body);resize:none;background:#fff;border:1px solid #2f5a9e4d;border-radius:5px;padding:8px;display:block}.annotation-icon{background:var(--tint);width:32px;height:32px;color:var(--blue);cursor:pointer;border:0;border-radius:5px;flex:none;place-items:center;padding:0;transition:background .15s;display:inline-grid}.annotation-icon:enabled:hover{background:#e2e9f5}.annotation-icon.generate,.annotation-icon.save-annotation{background:var(--blue);color:#fff}.annotation-icon.generate:enabled:hover,.annotation-icon.save-annotation:enabled:hover{background:var(--blue-deep)}.annotation-icon:disabled{opacity:.45;cursor:default}.markup-actions{align-items:center;gap:7px;display:flex}.saved-annotation{overflow-wrap:anywhere;-webkit-line-clamp:3;-webkit-box-orient:vertical;max-width:32ch;margin:0 0 9px;font-size:14px;line-height:1.45;display:-webkit-box;overflow:hidden}.demo-page .source-detail{color:var(--ink-soft);font-size:15px}.result-columns{margin-top:16px}.walk-stops{margin:0;padding-left:20px;font-size:16px;line-height:1.55}.walk-stops li{margin-bottom:12px}.source-link{margin-top:18px;display:inline-block}.result-columns .source-link{margin:0 0 18px}.demo-page .demo-note{color:var(--ink-soft);margin-top:18px;font-size:13px}.work-status{z-index:45;background:var(--paper);border:1px solid #2f5a9e38;border-radius:8px;justify-content:space-between;align-items:center;gap:12px;max-width:calc(100% - 44px);padding:8px 10px;font-size:14px;line-height:1.5;display:flex;position:absolute;top:22px;right:22px;box-shadow:0 3px 12px #1d2a471f}.work-status>span:before{content:"";background:var(--blue);border-radius:50%;width:6px;height:6px;margin-right:8px;animation:.9s ease-in-out infinite alternate working;display:inline-block}.rule{width:calc(100% - 2 * var(--gutter));max-width:calc(var(--measure) - 2 * var(--gutter));border:0;border-top:1px solid var(--olive);margin:32px auto 0}.colophon{margin-top:18px}.fallback{max-width:var(--measure);padding:28px var(--gutter) 64px;margin:0 auto}.fallback p,.fallback ol{max-width:68ch}@container (width<=640px){.chrome{gap:10px;padding-inline:11px}.dots{display:none}.address{max-width:none;padding-inline:8px;font-size:12px}.simulation-label{font-size:11px}.viewport{height:clamp(420px,56svh,480px);padding:10px}.demo-page{padding:20px 18px}.demo-page h2{font-size:24px}.demo-columns{grid-template-columns:1fr;gap:18px;margin-top:20px}.demo-columns:not(.result-columns)>.route-image{grid-row:2}.result-columns>div{grid-row:1}.result-columns .source-link{margin-bottom:0}.route-image svg{height:65px}.result-columns .route-image{display:none}.viewport:before,.viewport:after{left:12px;right:12px}.viewport:before{top:11px}.viewport:after{bottom:11px}}@media (width<=780px){.hero{padding-top:18px}.hook{font-size:17px}.standfirst{font-size:16px}.walkthrough-heading{gap:10px;margin-top:22px;margin-bottom:20px}.sec-hed{font-size:22px}.browser-nav{width:36px;height:40px}.walkthrough-nav{gap:2px}.step-label{min-width:36px;font-size:11px}.card{font-size:15.5px}.ctrl{min-height:44px;padding-top:10px}.colophon{padding-bottom:40px}}@media (width<=600px),(pointer:coarse){.browser-nav{width:44px;height:44px}.steps button,.replay button{min-height:44px}.annotation-icon{width:44px;height:44px}.annotation-input-row{grid-template-columns:minmax(0,1fr) 44px;gap:6px}.annotation-input-row textarea{grid-row:1/span 2;height:100%;min-height:94px}.annotation-input-row .save-annotation{grid-area:1/2}.annotation-input-row>.annotation-icon:not(.save-annotation){grid-area:2/2}.annotation-icon.annotation-indicator{width:36px;height:36px}.live-target{padding-block:9px}}@media (prefers-reduced-motion:no-preference){.hero{animation:.36s cubic-bezier(.22,.7,.3,1) both rise}.stage-wrap{animation:.36s cubic-bezier(.22,.7,.3,1) 60ms both rise}}@keyframes settle{0%{opacity:0}to{opacity:1}}@keyframes rise{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}@keyframes working{0%{opacity:.4}to{opacity:1}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}
