.float-lab .dl-grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}.float-lab .dl-inputs input{width:90px}.fl-applied{font-size:14px;color:#526e62;margin:4px 0 12px}.fl-register{margin:5px 0 16px}.fl-register>div:first-child{display:flex;gap:15px;align-items:center;justify-content:space-between}.fl-register>div:first-child span{font-size:18px;color:#256e58}.fl-register small{display:block;font-size:16px;overflow-wrap:anywhere}.fl-bits{display:flex;flex-wrap:wrap;gap:4px;align-items:center;margin:10px 0}.fl-bits b{display:grid;place-items:center;min-width:25px;height:38px;font:600 23px ui-monospace,monospace;background:#fff;border:1px solid #a8c6b6;border-bottom:3px solid #8bae9b;border-radius:5px}.fl-bits i{font:700 24px ui-monospace,monospace}.fl-grs{border-top:1px solid #c6d5c9;padding:12px 0;font-size:17px;overflow-wrap:anywhere}.fl-grs p{margin:8px 0}.fl-grs small,.fl-hint{font-size:13px;color:#526f61}.fl-line{margin-top:12px;background:#fff;border-radius:8px;padding:10px}.fl-line svg{width:100%;display:block;font:14px system-ui,sans-serif;fill:#214f3f}.fl-line p{font-size:14px;margin:0;overflow-wrap:anywhere}.fl-encoding{font-size:15px;overflow-wrap:anywhere;margin:10px 0}.fl-encoding p{font-size:15px}.fl-encoding code{font-size:14px;word-break:break-all}.fl-encoding small{font-size:12px}.fl-trials{display:flex;gap:6px;flex-wrap:wrap}.fl-trials button{font-size:14px}.float-lab .dl-reason .fl-hint{font-size:13px}.float-lab-launch{font:inherit;background:#1c6250;color:white;border:0;border-radius:5px;padding:3px 10px;cursor:pointer}.tools .float-lab-launch{font-size:14px}.float-lab .dl-stephead h2{font-size:22px}.float-lab .dl-stephead{margin-bottom:4px}
@media(max-width:750px){.float-lab .dl-grid{grid-template-columns:1fr}.float-lab .dl-inputs label:first-child{width:100%}.float-lab .dl-inputs select{max-width:200px}.float-lab .dl-inputs input{width:72px}.fl-bits b{min-width:22px;height:32px;font-size:20px}.fl-line{padding:5px}.fl-register small{font-size:14px}.float-lab .dl-stephead h2{font-size:20px}.tools .float-lab-launch{font-size:12px;padding:4px 8px}}
@media print{.float-lab-launch{display:none!important}}

@media(min-width:1100px) and (max-height:850px){.float-lab .dl-header{padding:10px 24px}.float-lab .dl-inputs{padding-top:10px}.float-lab .dl-contract{margin:6px 24px;font-size:12px}.float-lab .dl-stage{padding-bottom:8px}.float-lab .fl-line svg{height:92px}.float-lab .fl-register{margin-bottom:8px}.float-lab .fl-grs{padding:8px 0}.float-lab .fl-grs p{margin:4px 0}.float-lab .fl-line{margin-top:6px}.float-lab .dl-machine{padding:12px 16px}.float-lab .fl-hint{margin:6px 0}.float-lab .fl-applied{margin-bottom:8px}}

@media(min-width:1100px) and (max-height:850px){.float-lab .dl-reason .dl-result{padding:10px 14px}.float-lab .fl-encoding{margin:6px 0}.float-lab .fl-encoding p{margin:5px 0}}
@media(min-width:1100px) and (max-height:850px){.float-lab .fl-line{padding:6px 10px}}

.lesson-lab-nav{align-items:stretch}.lesson-lab-nav>button{font:inherit;min-height:44px;padding:5px 10px;border-radius:5px;background:#1c6250;color:#fff;border:1px solid #1c6250}.lesson-lab-nav>a{display:flex;align-items:center;min-height:44px}.lesson-lab-nav>button:hover{background:#164d46}.lesson-lab-nav a[aria-current="page"]{background:#164d46;color:#fff}
@media(min-width:1100px) and (max-height:850px){body[data-float-lesson] .lesson-lab-nav{margin:2px 0;font-size:13px}body[data-float-lesson] .lesson-lab-nav>a,body[data-float-lesson] .lesson-lab-nav>button{min-height:0;height:24px;padding:2px 8px;line-height:20px}body[data-divide-lesson] .lesson-lab-nav>a{min-height:0}body[data-float-lesson] .heading h1{margin-top:2px;margin-bottom:4px}body[data-float-lesson] .step-dots{margin:4px 0}body[data-float-lesson] .lesson-contract{margin-top:4px}}
@media print{.lesson-lab-nav{display:none!important}}
/* Explicit bit roles and reversible arithmetic work, shared by all float entry points. */
.float-lab [hidden]{display:none!important}.fl-tools{display:flex;flex-wrap:wrap;gap:8px;margin:8px 24px}.fl-tools button,.fl-boundary-tabs button{font:inherit;padding:6px 10px;border:1px solid #b2cbbc;background:#f7faf6;color:#205545;border-radius:5px;cursor:pointer}.fl-boundary-tabs{display:flex;gap:8px;flex-wrap:wrap}.fl-boundary-tabs button[aria-pressed=true]{background:#205545;color:white}.fl-boundary-step{margin-top:20px;border-left:4px solid #205545;padding:12px 20px;background:#eef4ec}.fl-boundary-step h3{font-size:24px}.fl-boundary-step p{font-size:21px;line-height:1.65}.fl-grs-map{display:flex;flex-wrap:wrap;align-items:flex-start;gap:10px;margin:12px 0}.fl-grs-map section{max-width:100%}.fl-grs-map small{font-size:13px;margin-bottom:5px}.fl-bitgroup{display:flex;flex-wrap:wrap;gap:3px;align-items:center;max-width:100%}.fl-bitgroup b{font:600 21px ui-monospace,monospace;padding:4px;background:#e0eee4;border:1px solid #b6ccbd;border-radius:4px}.fl-bitgroup i{font:700 21px ui-monospace,monospace}.fl-bitgroup.fl-guard b{background:#ffe4bb}.fl-bitgroup.fl-roundbit b{background:#e3eaf8}.fl-bitgroup.fl-tail b{background:#eee9e0}.fl-bitgroup .fl-last{border-bottom:4px solid #1c6250}.fl-work{font-size:18px}.fl-work>p{font-size:17px;line-height:1.5}.fl-work-row{display:flex;justify-content:space-between;align-items:center;gap:8px;margin:16px 0}.fl-work-row>span{font-size:15px}.fl-work-row code{font:600 26px ui-monospace,monospace;white-space:nowrap;letter-spacing:2px}.fl-work-row:last-of-type{border-top:1px solid #a7bfb0;padding-top:12px}.fl-new-digit{display:inline-block;background:#e0eee4;color:#154c3c;outline:2px solid #6b9d86}.fl-precision-row{display:grid;grid-template-columns:130px minmax(0,1fr);gap:8px;border-bottom:1px solid #c6d5c9;padding:12px 0}.fl-precision-row svg{width:100%;max-width:650px;height:95px;font:14px system-ui;fill:#214f3f}.fl-precision-row p{grid-column:1/-1;font-size:17px;margin:4px 0}.fl-legend{font-size:14px}.float-lab .dl-controls span{font-size:12px}.float-lab .dl-controls{flex-wrap:wrap}.float-lab .dl-controls button{font-size:15px}.float-lab .dl-stage>h2{font-size:24px}.float-lab .dl-grid>*{min-width:0}.float-lab .dl-stage{overflow-wrap:anywhere}
@media(min-width:1100px) and (max-height:850px){.fl-tools{margin:4px 24px}.fl-tools button{font-size:13px;padding:4px 8px}.float-lab .fl-bitgroup b{font-size:21px;padding:3px}.float-lab .fl-grs-map{margin:8px 0}.float-lab .dl-grid{gap:20px}.float-lab .dl-controls{gap:6px}.float-lab .dl-controls span{max-width:145px}.float-lab .dl-reason>p{line-height:1.45}.float-lab .fl-work-row{margin:12px 0}}
@media(max-width:750px){.fl-tools{margin:8px 14px}.fl-tools button{font-size:13px}.fl-work-row{flex-wrap:wrap;justify-content:flex-start}.fl-work-row code{font-size:21px;letter-spacing:0}.fl-work-row>span{width:100%}.fl-work>p{font-size:15px}.fl-boundary-step{padding:10px;margin-top:12px}.fl-boundary-step p{font-size:18px}.fl-boundary-tabs button{font-size:14px}.fl-precision-row{grid-template-columns:1fr}.fl-precision-row p{font-size:15px}.float-lab .dl-controls span{display:none}.float-lab .dl-controls button{font-size:13px}.float-lab .dl-stage>h2{font-size:21px}}