._workbench_1mybw_1,._workbench_1mybw_1 *{box-sizing:border-box}._workbench_1mybw_1{--vo2-ink:#143b3f;--vo2-copy:#536c70;--vo2-muted:#6c7d80;--vo2-teal:#0b756f;--vo2-teal-dark:#075650;--vo2-blue:#326c83;--vo2-soft:#e8f5f2;--vo2-line:#c8d9d6;--vo2-error:#a33f38;width:100%;min-width:0;color:var(--vo2-ink);background:#f5faf8;border:1px solid #1e5b583b;border-radius:1.35rem;overflow:hidden;box-shadow:0 1rem 2.8rem #1443401c;container-type:inline-size}._workbench_1mybw_1 button,._workbench_1mybw_1 input,._workbench_1mybw_1 select{font:inherit}._workbench_1mybw_1 button,._workbench_1mybw_1 select{cursor:pointer}._header_1mybw_38{color:#fff;background:radial-gradient(circle at 90% -15%,#70d3c44f,#0000 20rem),linear-gradient(128deg,#0b3d45 0%,#0b6965 63%,#2e7480 100%);grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:clamp(1rem,3cqi,2rem);padding:clamp(1.4rem,4cqi,2.35rem);display:grid}._headerCopy_1mybw_50{min-width:0}._eyebrow_1mybw_54,._sectionHeading_1mybw_55 p,._resultHeading_1mybw_56 p{letter-spacing:.11em;text-transform:uppercase;margin:0;font-size:.72rem;font-weight:900}._eyebrow_1mybw_54{color:#b9e9e0}._header_1mybw_38 h2{color:#fff;max-width:48rem;font-family:var(--font-serif,Georgia, "Times New Roman", serif);letter-spacing:-.04em;margin:.35rem 0 0;font-size:clamp(1.75rem,4.9cqi,3rem);line-height:1.04}._header_1mybw_38 h2 sub,._primaryResult_1mybw_79 sub{vertical-align:-.15em;font-size:.58em}._headerCopy_1mybw_50>p:last-child{color:#ffffffd1;max-width:65ch;margin:.7rem 0 0;font-size:.94rem;line-height:1.6}._oxygenMark_1mybw_92{background:#042f3359;border:1px solid #ffffff38;border-radius:1.1rem;justify-items:center;width:8rem;min-width:8rem;padding:.8rem;display:grid;box-shadow:inset 0 1px #ffffff12}._oxygenMark_1mybw_92 svg{width:6rem;height:4.35rem;overflow:visible}._oxygenMark_1mybw_92 svg path{fill:none;stroke:#c0eee4;stroke-linecap:round;stroke-linejoin:round;stroke-width:4px}._oxygenMark_1mybw_92 svg circle{fill:#e99b78;stroke:#fff;stroke-width:3px}._oxygenMark_1mybw_92 strong{color:#fff;font-family:var(--font-serif,Georgia, "Times New Roman", serif);letter-spacing:-.04em;margin-top:-.35rem;font-size:1.35rem}._oxygenMark_1mybw_92 span{color:#b9e9e0;letter-spacing:.04em;font-size:.66rem;font-weight:800}._methodSection_1mybw_139{border-bottom:1px solid var(--vo2-line);background:#fff;gap:.9rem;padding:clamp(1rem,3cqi,1.5rem);display:grid}._sectionHeading_1mybw_55,._resultHeading_1mybw_56{grid-template-columns:2rem minmax(0,1fr);align-items:center;gap:.7rem;min-width:0;display:grid}._sectionHeading_1mybw_55>span,._resultHeading_1mybw_56>span{background:var(--vo2-teal);color:#fff;border-radius:50%;place-items:center;width:2rem;height:2rem;font-size:.78rem;font-weight:900;display:grid}._sectionHeading_1mybw_55 p,._resultHeading_1mybw_56 p{color:var(--vo2-teal)}._sectionHeading_1mybw_55 h3,._resultHeading_1mybw_56 h3{color:var(--vo2-ink);font-family:var(--font-serif,Georgia, "Times New Roman", serif);letter-spacing:-.018em;margin:.12rem 0 0;font-size:clamp(1.08rem,2.6cqi,1.28rem);line-height:1.15}._methodGrid_1mybw_184{grid-template-columns:repeat(2,minmax(0,1fr));gap:.7rem;min-width:0;display:grid}._methodCard_1mybw_191{min-width:0;min-height:7.4rem;color:var(--vo2-ink);text-align:left;background:#fbfcfc;border:2px solid #d0ddda;border-radius:.9rem;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:.72rem;padding:.8rem;transition:border-color .14s,background .14s,box-shadow .14s;display:grid;position:relative}._methodCard_1mybw_191:hover{background:#f7fbfa;border-color:#91b8b3}._inputShell_1mybw_217:focus-within{outline-offset:2px;outline:3px solid #0b756f33}._methodCard_1mybw_191:focus-visible{outline-offset:2px;outline:3px solid #0b756f33}._actions_1mybw_214 button:focus-visible{outline-offset:2px;outline:3px solid #0b756f33}._measureMode_1mybw_215 button:focus-visible{outline-offset:2px;outline:3px solid #0b756f33}._selectField_1mybw_216 select:focus-visible{outline-offset:2px;outline:3px solid #0b756f33}._methodCard_1mybw_191[aria-pressed=true]{border-color:var(--vo2-teal);background:linear-gradient(135deg,#edf8f5,#fff);box-shadow:0 .35rem 1rem #1359531a}._methodIcon_1mybw_228{aspect-ratio:1;color:#476764;letter-spacing:-.02em;background:#e6efed;border-radius:50%;place-items:center;width:3.7rem;min-width:3.7rem;font-size:.76rem;font-weight:900;display:grid}._methodCard_1mybw_191[aria-pressed=true] ._methodIcon_1mybw_228{background:var(--vo2-teal);color:#fff;box-shadow:0 0 0 .35rem #0b756f1c}._methodCopy_1mybw_248{gap:.14rem;min-width:0;display:grid}._methodCopy_1mybw_248 small{color:var(--vo2-teal);letter-spacing:.065em;text-transform:uppercase;font-size:.64rem;font-weight:850}._methodCopy_1mybw_248 strong{font-size:.94rem;line-height:1.25}._methodCopy_1mybw_248>span{color:var(--vo2-copy);font-size:.72rem;line-height:1.45}._methodCopy_1mybw_248 em{color:#466664;font-size:.66rem;font-style:normal;font-weight:800;line-height:1.35}._methodCheck_1mybw_281{color:#0000;border:1px solid #bdcfcb;border-radius:50%;place-items:center;width:1.45rem;height:1.45rem;font-size:.7rem;font-weight:900;display:grid}._methodCard_1mybw_191[aria-pressed=true] ._methodCheck_1mybw_281{border-color:var(--vo2-teal);background:var(--vo2-teal);color:#fff}._workspace_1mybw_299{grid-template-columns:minmax(0,1.08fr) minmax(19rem,.92fr);align-items:start;gap:clamp(.8rem,2.3cqi,1.2rem);min-width:0;padding:clamp(.8rem,2.8cqi,1.35rem);display:grid}._formPanel_1mybw_308,._resultPanel_1mybw_309{border:1px solid var(--vo2-line);background:#fff;border-radius:1rem;min-width:0;padding:clamp(1rem,3cqi,1.35rem)}._formPanel_1mybw_308{gap:.9rem;display:grid}._resultPanel_1mybw_309{background:radial-gradient(circle at 100% 0,#1f898014,#0000 15rem),#fbfdfc;gap:.9rem;display:grid;position:sticky;top:1rem}._resultHeading_1mybw_56{grid-template-columns:2rem minmax(0,1fr) auto}._resultHeading_1mybw_56>strong{color:var(--vo2-muted);white-space:nowrap;background:#fff;border:1px solid #c7d8d4;border-radius:999px;padding:.28rem .48rem;font-size:.64rem}._resultHeading_1mybw_56>strong[data-state=example]{color:#7d5c1d;background:#fff8e9;border-color:#d8bd7e}._resultHeading_1mybw_56>strong[data-state=current]{background:var(--vo2-soft);color:var(--vo2-teal-dark);border-color:#8cbdb5}._protocolPrompt_1mybw_358{border-left:.25rem solid var(--vo2-teal);background:#eef7f4;border-radius:.5rem;gap:.15rem;padding:.72rem .82rem;display:grid}._protocolPrompt_1mybw_358 strong{font-size:.8rem}._protocolPrompt_1mybw_358 span{color:var(--vo2-copy);font-size:.7rem;line-height:1.4}._inputGroup_1mybw_377,._heartRateGroup_1mybw_378{min-width:0;margin:0}._inputGroup_1mybw_377{background:#fbfcfc;border:1px solid #d4e0dd;border-radius:.82rem;gap:.72rem;padding:.85rem;display:grid}._inputGroup_1mybw_377>legend,._heartRateGroup_1mybw_378>legend{color:var(--vo2-ink);padding:0 .35rem;font-size:.8rem;font-weight:900}._inputGroup_1mybw_377>p{color:var(--vo2-copy);margin:-.15rem 0 0;font-size:.72rem;line-height:1.5}._fieldGrid_1mybw_407{grid-template-columns:repeat(2,minmax(0,1fr));gap:.7rem;min-width:0;display:grid}._fieldGrid_1mybw_407>:last-child{grid-column:1/-1}._singleField_1mybw_418{max-width:29rem}._field_1mybw_407,._selectField_1mybw_216{align-content:start;gap:.3rem;min-width:0;display:grid}._fieldLabel_1mybw_430{color:var(--vo2-ink);font-size:.75rem;font-weight:850}._inputShell_1mybw_217{background:#fff;border:2px solid #9bbab6;border-radius:.68rem;grid-template-columns:minmax(0,1fr) auto;min-width:0;display:grid;overflow:hidden;box-shadow:inset 0 1px 2px #123d3b0d}._inputShell_1mybw_217:focus-within{border-color:var(--vo2-teal)}._inputShell_1mybw_217[data-invalid=true]{border-color:var(--vo2-error);background:#fff9f8}._inputShell_1mybw_217 input{width:100%;min-width:0;min-height:3.65rem;color:var(--vo2-ink);font-variant-numeric:tabular-nums;letter-spacing:-.025em;background:0 0;border:0;outline:0;padding:.62rem .72rem;font-size:clamp(1.3rem,3.6cqi,1.65rem);font-weight:850}._inputShell_1mybw_217>span{color:#365d5a;text-align:center;white-space:nowrap;background:#eef6f4;border-left:1px solid #cbdad7;place-items:center;min-width:4rem;padding:.5rem .65rem;font-size:.68rem;font-weight:850;display:grid}._field_1mybw_407 small,._selectField_1mybw_216 small{min-height:1.9em;color:var(--vo2-muted);font-size:.63rem;line-height:1.45}._field_1mybw_407 em{min-height:1em;color:var(--vo2-error);font-size:.62rem;font-style:normal;font-weight:750;line-height:1.35}._selectField_1mybw_216 select{width:100%;min-width:0;min-height:3.65rem;color:var(--vo2-ink);background:#fff;border:2px solid #9bbab6;border-radius:.68rem;padding:.62rem 2.25rem .62rem .7rem;font-size:.82rem;font-weight:800}._timeGrid_1mybw_515{grid-template-columns:minmax(0,1fr) auto minmax(0,1fr) minmax(7rem,.72fr);align-items:center;gap:.5rem;min-width:0;display:grid}._timeGrid_1mybw_515>._field_1mybw_407{align-self:stretch}._timeColon_1mybw_527{color:var(--vo2-teal-dark);align-self:center;margin-top:-.6rem;font-size:1.6rem;font-weight:900}._clockPreview_1mybw_535,._conversionPreview_1mybw_536{min-width:0;color:var(--vo2-ink);background:#eef6f4;border:1px solid #cbdad7;border-radius:.62rem;gap:.12rem;padding:.62rem;display:grid}._clockPreview_1mybw_535 span,._conversionPreview_1mybw_536 span{color:var(--vo2-muted);letter-spacing:.045em;text-transform:uppercase;font-size:.59rem;font-weight:800}._clockPreview_1mybw_535 strong,._conversionPreview_1mybw_536 strong{font-variant-numeric:tabular-nums;font-size:.9rem}._heartRateGroup_1mybw_378{background:#fff;border:1px dashed #bed1cd;border-radius:.72rem;gap:.58rem;padding:.72rem;display:grid}._measureMode_1mybw_215{background:#eef3f2;border:1px solid #d3dfdc;border-radius:.65rem;grid-template-columns:repeat(2,minmax(0,1fr));gap:.36rem;padding:.25rem;display:grid}._measureMode_1mybw_215 button{color:#536b68;background:0 0;border:1px solid #0000;border-radius:.48rem;min-width:0;min-height:2.6rem;padding:.45rem .6rem;font-size:.7rem;font-weight:800}._measureMode_1mybw_215 button[aria-pressed=true]{color:var(--vo2-teal-dark);background:#fff;border-color:#a8c4bf;box-shadow:0 .2rem .5rem #12423e17}._heartRateField_1mybw_600{grid-template-columns:minmax(0,1fr) minmax(7rem,.48fr);align-items:center;gap:.65rem;min-width:0;display:grid}._errorSummary_1mybw_608{border:1px solid #a33f384d;border-left:.25rem solid var(--vo2-error);color:var(--vo2-error);background:#fff8f7;border-radius:.58rem;gap:.16rem;padding:.72rem .8rem;display:grid}._errorSummary_1mybw_608 strong{font-size:.74rem}._errorSummary_1mybw_608 span{font-size:.68rem;line-height:1.45}._actions_1mybw_214{grid-template-columns:minmax(9rem,1fr) auto auto;gap:.5rem;display:grid}._actions_1mybw_214 button{border:1px solid var(--vo2-teal);background:var(--vo2-teal);color:#fff;border-radius:.65rem;min-height:3rem;padding:.62rem .82rem;font-size:.74rem;font-weight:900}._actions_1mybw_214 button:hover:not(:disabled){background:var(--vo2-teal-dark)}._actions_1mybw_214 button+button{color:#49625f;background:#fff;border-color:#b8cbc7}._actions_1mybw_214 button+button:hover:not(:disabled){background:#edf6f3}._actions_1mybw_214 button:disabled{cursor:wait;opacity:.65}._resultContent_1mybw_664{gap:.72rem;min-width:0;display:grid}._primaryResult_1mybw_79{text-align:center;background:radial-gradient(circle at 88% 4%,#5fc5b726,#0000 10rem),linear-gradient(145deg,#edf8f5,#fff);border:1px solid #0b756f47;border-radius:.9rem;justify-items:center;gap:.28rem;min-width:0;padding:clamp(1rem,3.5cqi,1.45rem);display:grid}._primaryResult_1mybw_79>span{color:var(--vo2-teal-dark);letter-spacing:.075em;text-transform:uppercase;font-size:.71rem;font-weight:900}._primaryResult_1mybw_79>div{justify-content:center;align-items:baseline;gap:.45rem;min-width:0;display:flex}._primaryResult_1mybw_79>div strong{color:var(--vo2-teal-dark);font-family:var(--font-serif,Georgia, "Times New Roman", serif);font-variant-numeric:tabular-nums;letter-spacing:-.065em;font-size:clamp(3rem,9cqi,4.9rem);line-height:.95}._primaryResult_1mybw_79>div em{color:#3c625f;white-space:nowrap;font-size:clamp(.72rem,2cqi,.9rem);font-style:normal;font-weight:850}._primaryResult_1mybw_79>p{color:var(--vo2-copy);margin:0;font-size:.72rem;line-height:1.4}._resultScale_1mybw_724{border:1px solid var(--vo2-line);background:#fff;border-radius:.75rem;gap:.48rem;min-width:0;padding:.78rem;display:grid}._resultScale_1mybw_724>header{justify-content:space-between;align-items:center;gap:.6rem;display:flex}._resultScale_1mybw_724>header>div{gap:.08rem;display:grid}._resultScale_1mybw_724>header strong{font-size:.76rem}._resultScale_1mybw_724>header span{color:var(--vo2-muted);font-size:.62rem}._resultScale_1mybw_724>header>b{background:var(--vo2-ink);color:#fff;font-variant-numeric:tabular-nums;border-radius:.38rem;padding:.24rem .42rem;font-size:.7rem}._scaleTrack_1mybw_764{background:linear-gradient(90deg,#0000 19.6%,#ffffffbf 19.6% 20.4%,#0000 20.4% 39.6%,#ffffffbf 39.6% 40.4%,#0000 40.4% 59.6%,#ffffffbf 59.6% 60.4%,#0000 60.4% 79.6%,#ffffffbf 79.6% 80.4%,#0000 80.4%),linear-gradient(90deg,#dcebea,#a8cfca 38%,#5c9e9b 70%,#326c83);border:1px solid #154c4b29;border-radius:999px;height:1.1rem;margin-top:1.55rem;position:relative}._scaleMarker_1mybw_775{top:-1.58rem;left:var(--vo2-result-position);justify-items:center;display:grid;position:absolute;transform:translate(-50%)}._scaleMarker_1mybw_775:after{border-top:.45rem solid var(--vo2-ink);content:"";border-left:.35rem solid #0000;border-right:.35rem solid #0000;width:0;height:0}._scaleMarker_1mybw_775 b{background:var(--vo2-ink);color:#fff;white-space:nowrap;border-radius:.35rem;padding:.16rem .33rem;font-size:.58rem}._scaleLabels_1mybw_802{color:var(--vo2-muted);font-variant-numeric:tabular-nums;justify-content:space-between;font-size:.58rem;display:flex}._resultScale_1mybw_724>p{color:var(--vo2-copy);margin:0;font-size:.63rem;line-height:1.45}._resultFacts_1mybw_817{grid-template-columns:repeat(3,minmax(0,1fr));gap:.46rem;margin:0;display:grid}._resultFacts_1mybw_817>div{border:1px solid var(--vo2-line);background:#fff;border-radius:.62rem;min-width:0;padding:.62rem}._resultFacts_1mybw_817 dt{color:var(--vo2-muted);letter-spacing:.045em;text-transform:uppercase;font-size:.59rem;font-weight:800}._resultFacts_1mybw_817 dd{color:var(--vo2-ink);overflow-wrap:anywhere;margin:.18rem 0 0;font-size:.67rem;font-weight:800;line-height:1.35}._calculationDetails_1mybw_849{border:1px solid var(--vo2-line);background:#fff;border-radius:.68rem}._calculationDetails_1mybw_849 summary{color:var(--vo2-ink);cursor:pointer;padding:.72rem .8rem;font-size:.7rem;font-weight:850}._calculationDetails_1mybw_849>div{gap:.5rem;padding:0 .8rem .78rem;display:grid}._calculationDetails_1mybw_849 code{overflow-wrap:anywhere;color:#315b58;white-space:normal;background:#eef6f4;border-radius:.48rem;max-width:100%;padding:.62rem;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.63rem;line-height:1.5;display:block}._calculationDetails_1mybw_849 p,._scopeNote_1mybw_884 p{color:var(--vo2-copy);margin:0;font-size:.64rem;line-height:1.5}._scopeNote_1mybw_884{background:#fff8eb;border-left:.25rem solid #d49a4a;border-radius:.52rem;gap:.18rem;padding:.72rem .8rem;display:grid}._scopeNote_1mybw_884 strong{color:#684b20;font-size:.7rem}._emptyResult_1mybw_905{text-align:center;background:linear-gradient(145deg,#f3f9f7,#fff);border:1px dashed #b9ceca;border-radius:.85rem;place-content:center;justify-items:center;gap:.55rem;min-height:25rem;padding:1.4rem;display:grid}._emptyResult_1mybw_905>div{aspect-ratio:1;width:4.5rem;color:var(--vo2-teal);background:#fff;border:.4rem solid #dcecea;border-radius:50%;place-items:center;display:grid;box-shadow:0 0 0 .7rem #0b756f0f}._emptyResult_1mybw_905>div span{font-family:var(--font-serif,Georgia, "Times New Roman", serif);font-size:1.25rem;font-weight:900}._emptyResult_1mybw_905>strong{font-family:var(--font-serif,Georgia, "Times New Roman", serif);margin-top:.4rem;font-size:1.08rem}._emptyResult_1mybw_905>p{max-width:35ch;color:var(--vo2-copy);margin:0;font-size:.72rem;line-height:1.55}._srOnly_1mybw_950{clip:rect(0, 0, 0, 0);white-space:nowrap;border:0;width:1px;height:1px;padding:0;position:absolute;overflow:hidden}@container (width<=58rem){._workspace_1mybw_299{grid-template-columns:minmax(0,1fr)}._resultPanel_1mybw_309{position:static}._resultFacts_1mybw_817{grid-template-columns:repeat(3,minmax(0,1fr))}}@container (width<=44rem){._methodGrid_1mybw_184,._fieldGrid_1mybw_407{grid-template-columns:minmax(0,1fr)}._fieldGrid_1mybw_407>:last-child{grid-column:auto}._timeGrid_1mybw_515{grid-template-columns:minmax(0,1fr) auto minmax(0,1fr)}._clockPreview_1mybw_535{grid-column:1/-1}._heartRateField_1mybw_600{grid-template-columns:minmax(0,1fr)}._actions_1mybw_214{grid-template-columns:minmax(8.5rem,1fr) repeat(2,auto)}}@container (width<=34rem){._header_1mybw_38{grid-template-columns:minmax(0,1fr)}._oxygenMark_1mybw_92{display:none}._methodCard_1mybw_191{grid-template-columns:auto minmax(0,1fr);min-height:0}._methodCheck_1mybw_281{position:absolute;top:.65rem;right:.65rem}._resultHeading_1mybw_56{grid-template-columns:2rem minmax(0,1fr)}._resultHeading_1mybw_56>strong{grid-column:2;justify-self:start}._resultFacts_1mybw_817{grid-template-columns:minmax(0,1fr)}._actions_1mybw_214{grid-template-columns:repeat(2,minmax(0,1fr))}._actions_1mybw_214 button:first-child{grid-column:1/-1}}@media (max-width:560px){._workbench_1mybw_1{border-left:0;border-right:0;border-radius:.9rem}._header_1mybw_38,._methodSection_1mybw_139,._workspace_1mybw_299{padding-left:.85rem;padding-right:.85rem}._formPanel_1mybw_308,._resultPanel_1mybw_309{padding:.85rem}._inputGroup_1mybw_377{padding:.72rem}._methodIcon_1mybw_228{width:3.15rem;min-width:3.15rem}._primaryResult_1mybw_79>div{gap:.14rem;display:grid}._primaryResult_1mybw_79>div strong{font-size:3.65rem}._inputShell_1mybw_217 input{min-height:3.45rem;font-size:1.35rem}._inputShell_1mybw_217>span{min-width:3.5rem;padding-inline:.5rem}}@media (prefers-reduced-motion:reduce){._methodCard_1mybw_191{transition:none}}