@scope (#calculator) {

@font-face{font-family:Newsreader;src:url('/assets/fonts/Newsreader-Variable.woff2')}@font-face{font-family:DM;src:url('/assets/fonts/DMSans-Regular.woff2')}@font-face{font-family:DM;src:url('/assets/fonts/DMSans-Medium.woff2');font-weight:500}
:scope{--paper:#f1f1f3;--card:#fff;--well:#f5f5f6;--ink:#0b0b0c;--muted:#6c6c71;--line:#e5e5e8;--accent:#32664d;--serif:Newsreader,Georgia,serif;--sans:DM,system-ui,sans-serif;color-scheme:light}*{box-sizing:border-box}:scope{margin:0;background:var(--paper);color:var(--ink);font:15px/1.5 var(--sans)}button,input,select{font:inherit;color:inherit}input,select{color:var(--ink)}button,a,select,input[type=range]{-webkit-tap-highlight-color:transparent}button,a{cursor:pointer}a{color:inherit;text-underline-offset:4px}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:2px solid var(--accent);outline-offset:3px}button{border:0}input,select{min-width:0;width:100%;border:1px solid var(--line);border-radius:10px;background:var(--well);padding:10px 12px;height:44px}input[aria-invalid=true]{outline:2px solid #b94b42}select{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='m1 1 5 5 5-5' fill='none' stroke='%23808085' stroke-width='1.5'/%3E%3C/svg%3E");background-position:right 12px center;background-repeat:no-repeat;padding-right:32px}input[type=number]{appearance:textfield}input::-webkit-inner-spin-button{appearance:none}label{display:grid;gap:6px;font-size:12px;color:var(--muted)}fieldset{border:0;padding:0;margin:0;min-width:0}h1,h2,h3,p{margin:0}h1{font:400 clamp(36px,5vw,56px)/1.02 var(--serif);letter-spacing:-.025em}h2{font-size:18px;font-weight:500}h3{font-size:14px;font-weight:500}.label{text-transform:uppercase;letter-spacing:.13em;font-size:10px;font-weight:500;color:var(--muted)}.muted,.note{color:var(--muted)}.note{font-size:12px;line-height:1.6}.serif{font-family:var(--serif)}.number{font:400 44px/1 var(--serif);font-variant-numeric:tabular-nums;letter-spacing:-.025em}.large{font-size:64px}.card{background:var(--card);border-radius:24px;padding:26px;min-width:0}.head{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:18px}.pair{display:grid;grid-template-columns:1fr 1fr;gap:12px}.stack{display:grid;gap:16px}.gap{margin-top:20px}.rule{border-top:1px solid var(--line);padding-top:18px;margin-top:18px}.calc-pill{display:inline-flex;align-items:center;justify-content:center;padding:8px 14px;border-radius:999px;background:var(--ink);color:var(--card);text-decoration:none;font-size:12px;white-space:nowrap}.quiet{background:transparent;color:var(--muted);padding:0;text-decoration:underline;text-underline-offset:4px;font-size:12px}.calc-units{display:flex;gap:3px;background:var(--well);padding:3px;border-radius:99px}.calc-units button{background:none;padding:6px 12px;border-radius:99px;font-size:12px}.calc-units button[aria-pressed=true]{background:var(--ink);color:var(--card)}.site-nav{max-width:1120px;margin:auto;padding:24px 24px;display:flex;justify-content:space-between;align-items:center}.wordmark{font:30px var(--serif);text-decoration:none}.nav-links{display:flex;gap:24px;align-items:center;font-size:12px}.page{max-width:1100px;margin:28px auto 0;padding:0 24px 110px}.intro{margin-bottom:28px;display:flex;justify-content:space-between;align-items:end;gap:20px}.intro p{margin-top:10px;color:var(--muted)}.design-note{border-top:1px solid var(--line);margin-top:28px;padding-top:18px;display:flex;justify-content:space-between;gap:20px;font-size:12px;color:var(--muted)}.race-form{display:grid;grid-template-columns:1fr 1.2fr;gap:12px}.race-form .time{font:36px var(--serif);height:58px;padding:8px 12px}.race-form select{height:58px;font-size:14px}.race-form label{align-content:start}.card .label+.race-form{margin-top:14px}.ruler{width:100%;height:34px;padding:0;border:0;background:none;accent-color:var(--ink);cursor:ew-resize}.ruler-labels{display:flex;justify-content:space-between;font-size:10px;color:var(--muted)}.gap-badge{display:inline-block;background:#edf3ef;color:#32664d;border-radius:99px;padding:5px 10px;font-size:11px}.status:empty{display:none}.status{min-height:20px;color:var(--muted);font-size:12px;margin-top:10px}.table-wrap{overflow-x:auto}.equivalents{width:100%;border-collapse:collapse;table-layout:fixed;font-variant-numeric:tabular-nums}.equivalents th,.equivalents td{padding:16px 8px;text-align:right;border-bottom:1px solid var(--line);white-space:nowrap}.equivalents th:first-child{width:25%;text-align:left;padding-left:0}.equivalents th:last-child,.equivalents td:last-child{padding-right:0}.equivalents thead th{font-size:10px;font-weight:400;color:var(--muted);padding-top:6px;padding-bottom:10px}.equivalents tbody th{font-size:13px;font-weight:500}.equivalents tbody td{font-size:14px}.equivalents tbody tr.is-goal{background:var(--well)}.equivalents tbody tr.is-goal th{padding-left:8px}.equivalents small{display:block;color:var(--muted);font-size:10px}.conditions summary{cursor:pointer;font-weight:500;font-size:13px}.conditions summary::marker{color:var(--muted)}.condition-fields{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:16px}.conditions .pair{gap:8px}.conditions input,.conditions select{font-size:12px;padding:8px;height:38px}.conditions select{padding-right:25px}.conditions fieldset>label+label{margin-top:8px}.conditions legend{font-size:11px;font-weight:500;margin-bottom:8px}.conditions [hidden]{display:none}.conditions .custom{margin-top:10px}.road{height:150px;position:relative;overflow:hidden}.road svg{width:100%;height:100%;overflow:visible}.road .base{fill:none;stroke:var(--line);stroke-width:9;stroke-linecap:round}.road .trace{fill:none;stroke:var(--ink);stroke-width:2.4;stroke-linecap:round}.road text{font:10px var(--sans);fill:var(--muted)}.road circle{fill:var(--ink)}.forecast .number{margin-top:12px}.forecast .note{margin-top:8px}.breakdown{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}.breakdown span{font-size:10px;color:var(--muted);border:1px solid var(--line);border-radius:99px;padding:5px 8px}.train-link{display:flex;align-items:center;justify-content:space-between;border-top:1px solid var(--line);margin-top:20px;padding-top:16px;text-decoration:none;font-size:12px}.train-link span{color:var(--muted)}.training{max-width:850px}.training table{width:100%;border-collapse:collapse;font-variant-numeric:tabular-nums}.training th,.training td{text-align:right;padding:13px 8px;border-bottom:1px solid var(--line);font-size:14px}.training th:first-child{text-align:left}.training th{font-weight:500}.training thead th{font-size:11px;color:var(--muted)}.training caption{text-align:left;font-weight:500;padding-bottom:14px}.training .rep-grid{display:grid;grid-template-columns:1fr 1fr;gap:30px}.zone-key{display:flex;height:32px;gap:3px;margin:18px 0}.zone-key span{flex:1;border-radius:5px;color:white;display:grid;place-content:center;font-size:10px}
/* 1: paired race cards, compact lower split. */
.compare .race-pair{display:grid;grid-template-columns:1fr 1fr;gap:16px}.compare .goal-card{background:#e8ece8}.compare .lower{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(260px,1fr);gap:16px;margin-top:16px}.compare .condition-fields{grid-template-columns:repeat(4,1fr)}.compare .forecast .road{height:165px}
/* 2: a stable control rail and one dense ledger. */
.ledger{max-width:1000px}.ledger .intro h1{font:500 28px var(--sans)}.ledger .ledger-grid{display:grid;grid-template-columns:280px minmax(0,1fr);gap:24px}.ledger .card{border-radius:16px;padding:22px}.ledger .race-form{grid-template-columns:1fr}.ledger .race-form label{display:flex;justify-content:space-between;align-items:center;gap:10px}.ledger .race-form input,.ledger .race-form select{width:155px;height:42px;font-size:18px}.ledger .condition-fields{grid-template-columns:1fr}.ledger .equivalents th,.ledger .equivalents td{padding-block:13px}.ledger .forecast{display:grid;grid-template-columns:1fr 180px;align-items:center}.ledger .forecast .road{height:105px}.ledger .forecast .breakdown{grid-column:1/-1}
/* 3: destination foreground, evidence in the side rail. */
.goal-first .hero-grid{display:grid;grid-template-columns:minmax(0,1.7fr) minmax(250px,1fr);gap:18px}.goal-first .goal-hero{background:#161b18;color:#f6f6f3;padding:34px;--muted:#acb6af;--line:#3d4841;--well:#252e28;--ink:#f6f6f3;--card:#161b18}.goal-first .goal-hero .race-form{max-width:430px}.goal-first .goal-hero .race-form .time{font-size:48px;height:68px}.goal-first .goal-hero .race-form select{height:68px}.goal-first .goal-hero .road{height:120px}.goal-first .goal-hero .ruler{accent-color:#dce7dc}.goal-first .goal-hero input,.goal-first .goal-hero select{color-scheme:dark}.goal-first .forecast .number{font-size:40px}.goal-first .results{max-width:800px;margin:24px auto 0}.goal-first .conditions{margin-top:18px}
/* 4: editorial horizontal narrative, restrained ink rules. */
.story{max-width:1000px;background:var(--card);padding:36px 36px 100px;border-radius:24px}.story .intro{border-bottom:1px solid var(--line);padding-bottom:24px}.story .story-flow{display:grid;grid-template-columns:1fr 1fr 1fr;gap:24px}.story .story-flow>section{padding:0 20px 0 0;border-right:1px solid var(--line)}.story .story-flow>section:last-child{border-right:0;padding-right:0}.story .race-form{grid-template-columns:1fr}.story .race-form label{gap:4px}.story .race-form select{height:38px}.story .race-form .time{height:52px}.story .forecast .number{font-size:48px}.story .forecast .road{height:105px}.story .conditions{border-block:1px solid var(--line);padding-block:18px;margin:26px 0}.story .story-bottom{display:grid;grid-template-columns:1fr 260px;gap:36px}.story .story-aside{font:24px/1.25 var(--serif);padding-top:30px}.story .story-aside p{font:12px/1.7 var(--sans);color:var(--muted);margin-top:12px}
/* 5: task-focused workbench with a map in the center. */
.workbench{max-width:1180px}.workbench .bench{display:grid;grid-template-columns:250px minmax(0,1fr) 280px;gap:14px}.workbench .bench .race-form{grid-template-columns:1fr}.workbench .bench .card{padding:24px}.workbench .map-card{background:#e9ece8}.workbench .map-card .road{height:190px}.workbench .map-card .number{font-size:52px}.workbench .bench-results{display:grid;grid-template-columns:minmax(0,1fr) 310px;gap:14px;margin-top:14px}.workbench .condition-fields{grid-template-columns:1fr 1fr}.workbench .bench-results .conditions{padding:24px}.workbench .intro h1{font-size:42px}.workbench .bench-results .table-card{padding-inline:30px}
@media(max-width:900px){.workbench .bench{grid-template-columns:1fr 1fr}.workbench .map-card{grid-column:1/-1;grid-row:2}.workbench .map-card .road{height:130px}.workbench .bench-results{grid-template-columns:1fr}.workbench .condition-fields{grid-template-columns:repeat(4,1fr)}}
@media(max-width:680px){.site-nav{padding:18px 20px}.nav-links{gap:14px}.page{padding:0 16px 120px;margin-top:18px}.intro{display:block}.intro h1{font-size:36px}.intro .calc-units{width:fit-content;margin-top:16px}.intro p{font-size:13px}.card{padding:20px}.number{font-size:38px}.large{font-size:48px}.compare .race-pair,.compare .lower,.ledger .ledger-grid,.goal-first .hero-grid,.story .story-flow,.story .story-bottom,.workbench .bench,.workbench .bench-results{grid-template-columns:1fr}.ledger .race-form{grid-template-columns:1fr 1fr}.ledger .race-form label{display:grid}.ledger .race-form input,.ledger .race-form select{width:100%;height:50px}.ledger .condition-fields,.condition-fields,.workbench .condition-fields{grid-template-columns:1fr 1fr}.compare .lower .forecast{grid-row:1}.compare .condition-fields{grid-template-columns:1fr 1fr}.goal-first .goal-hero{padding:24px}.goal-first .results{margin-top:18px}.story{margin-inline:12px;padding:24px 20px 120px}.story .story-flow>section{border:0;border-bottom:1px solid var(--line);padding:0 0 22px}.story .story-flow>section:last-child{border:0}.story .race-form{grid-template-columns:1fr 1fr}.story .story-aside{padding-top:0}.story .story-bottom{gap:24px}.workbench .map-card{grid-column:auto;grid-row:auto}.workbench .bench .race-form{grid-template-columns:1fr 1fr}.workbench .bench-results .table-card{padding:20px}.equivalents th:first-child{width:24%}.equivalents th,.equivalents td{padding:13px 4px}.equivalents tbody th{font-size:11px}.equivalents tbody td{font-size:12px}.equivalents thead th{font-size:9px}.design-note{flex-direction:column;gap:8px}.training .rep-grid{grid-template-columns:1fr}.training th,.training td{font-size:12px;padding:12px 4px}.nav-links .desktop{display:none}}
.rep-table{table-layout:fixed}.rep-table th:first-child{width:22%}.training .rep-table th,.training .rep-table td{padding-inline:6px}@media(max-width:600px){.rep-table{min-width:560px}.table-wrap{overflow-x:auto}.training .rep-table th:first-child{position:sticky;left:0;background:var(--card)}}
.training{max-width:1100px}.intro h1{font-size:42px;line-height:1.15}.intro p{max-width:650px}.training .calc-units{background:var(--well);width:fit-content}.source{display:grid;grid-template-columns:1fr 1.5fr;gap:24px;align-items:center;margin-bottom:20px}.entry{display:grid;grid-template-columns:1fr 1fr auto;gap:12px;align-items:end}.entry .calc-pill{height:44px}.source .status{grid-column:1/-1;margin:0}.source h2{margin-bottom:12px}.workspace{display:grid;grid-template-columns:1fr 1fr;gap:20px}.ladder-only{max-width:740px;margin:auto}.zone-row{display:grid;grid-template-columns:5px 1fr auto;gap:16px;align-items:center;width:100%;text-align:left;padding:16px 12px;border-radius:10px;background:transparent;min-height:56px}.zone-row[aria-pressed=true]{background:var(--well)}.zone-mark{display:inline-block;width:5px;height:22px;border-radius:3px;background:var(--zone);flex-shrink:0}.zone-name{display:flex;align-items:center;gap:12px;font-weight:500}.zone-row span:last-child{font-variant-numeric:tabular-nums;color:var(--muted);font-size:14px}.zone-row:hover{background:var(--well)}.selected-pace{padding:10px 0 24px;border-bottom:1px solid var(--line);margin-bottom:14px;text-align:center}.selected-pace .zone-name{justify-content:center}.selected-pace .number{margin:14px 0 8px}.distance-time{display:flex;justify-content:center;align-items:center;gap:16px;margin-top:20px}.distance-time select{width:120px}.distance-time output{font-size:24px;font-family:var(--serif)}.training .calc-units button{min-height:36px}.unit-heading{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}.training .rep-table{min-width:410px}.training td{white-space:nowrap}.training th{white-space:nowrap}.reference summary{display:flex;align-items:center;justify-content:space-between;gap:16px;cursor:pointer;padding:18px 8px}.reference details{border-bottom:1px solid var(--line)}.reference details[open]{padding-bottom:16px}.reference summary::after{content:'+';color:var(--muted)}.reference details[open] summary::after{content:'−'}.reference .range{margin-left:auto;font-variant-numeric:tabular-nums}.reference .detail-content{padding:0 8px 6px 25px}.pace-targets{display:flex;gap:12px;flex-wrap:wrap;margin:16px 0}.pace-targets span{padding:8px 12px;background:var(--well);border-radius:8px;font-size:13px}.source-error{color:#b94b42}.training .head{flex-wrap:wrap}.training .number{font-size:42px}.training .table-wrap{margin-top:16px}.mode-caption{font-size:12px;color:var(--muted);margin-bottom:14px}.entry input{font-variant-numeric:tabular-nums}.training .intro{align-items:center}
@media(max-width:760px){.source,.workspace{grid-template-columns:1fr}.entry{grid-template-columns:1fr 1fr}.entry .calc-pill{grid-column:1/-1}.training .intro h1{font-size:36px}.zone-row{gap:10px;padding-inline:6px}.zone-row span:last-child{font-size:12px}.training .card{padding:20px}.reference .range{font-size:13px}.reference summary{gap:10px}.source{gap:16px}.selected-pace .number{font-size:36px}}
.proto-picker {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2147483647;
  display: flex;
  align-items: center;
  gap: 2px;
  padding: 4px;
  border-radius: 999px;
  background: rgba(10, 10, 10, 0.82);
  -webkit-backdrop-filter: blur(12px) saturate(1.4);
  backdrop-filter: blur(12px) saturate(1.4);
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.08) inset,
    0 8px 24px rgba(0, 0, 0, 0.24),
    0 2px 6px rgba(0, 0, 0, 0.12);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 13px;
  line-height: 1;
  -webkit-font-smoothing: antialiased;
  user-select: none;
  -webkit-user-select: none;
}

.proto-picker-highlight {
  position: absolute;
  top: 4px;
  left: 0;
  height: 28px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.12);
  will-change: transform;
}

/* The slide is enabled only after first paint (data-ready), so load doesn't animate. */
.proto-picker[data-ready] .proto-picker-highlight {
  transition:
    transform 250ms cubic-bezier(0.23, 1, 0.32, 1),
    width 250ms cubic-bezier(0.23, 1, 0.32, 1);
}

@media (prefers-reduced-motion: reduce) {
  .proto-picker[data-ready] .proto-picker-highlight { transition: none; }
}

.proto-picker-item {
  position: relative; /* sits above the highlight */
  display: flex;
  align-items: center;
  height: 28px;
  padding: 0 12px;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: rgba(255, 255, 255, 0.55);
  font: inherit;
  cursor: pointer;
  transition: color 150ms ease-out;
}

.proto-picker-item:hover {
  color: rgba(255, 255, 255, 0.85);
}

.proto-picker-item:active {
  transform: scale(0.97);
}

.proto-picker-item:focus-visible {
  outline: 2px solid rgba(255, 255, 255, 0.4);
  outline-offset: 2px;
}

.proto-picker-item[data-active] {
  color: #fff;
}

.proto-picker-divider {
  width: 1px;
  height: 16px;
  margin: 0 4px;
  background: rgba(255, 255, 255, 0.12);
}

.proto-picker-replay {
  padding: 0 10px;
  font-size: 14px;
}

.proto-picker[data-position="top"] {
  bottom: auto;
  top: 24px;
}

.training{max-width:1280px}.workspace{grid-template-columns:minmax(280px,.8fr) minmax(0,2fr);align-items:stretch}.workspace .zone-row{gap:10px;padding:14px 4px;min-height:58px;cursor:default}.workspace .zone-row[aria-pressed=true]{background:transparent}.workspace .zone-row span:last-child{font-size:12px}.training .rep-table{min-width:650px;table-layout:auto}.training .rep-table th:first-child{width:auto}.training .rep-table th,.training .rep-table td{font-size:12px;padding:18px 6px}.training .rep-table thead th{font-size:10px}.source{grid-template-columns:1fr 2.6fr}.entry{grid-template-columns:minmax(0,1fr) 210px;align-items:start;gap:28px}.source .status{grid-column:1/-1}.distance-entry legend{font-size:11px;color:var(--muted);margin-bottom:12px}.distance-entry .calc-units{flex-wrap:wrap}.distance-entry .calc-units button{padding-inline:14px}.clock-fields{display:grid;grid-template-columns:1fr 10px 1fr 10px 1fr;gap:3px}.clock-fields input{height:48px;text-align:center;font:30px var(--serif);padding:0}.clock-fields label{text-align:center;font-size:10px;gap:4px}.clock-colon{line-height:48px;text-align:center;color:var(--muted)}.clock-group legend{font-size:11px;color:var(--muted);margin-bottom:9px}.clock-action{display:grid;gap:10px}.clock-action .calc-pill{height:36px}.training .intro .calc-units{background:#fff}.workspace .zone-row:hover{background:transparent}
@media(max-width:1000px){.source{grid-template-columns:1fr}.source-heading{display:flex;align-items:center;justify-content:space-between;gap:12px}.source-heading h2{margin:0}.workspace{grid-template-columns:1fr}.workspace .zone-row span:last-child{font-size:14px}}
@media(max-width:600px){.entry{grid-template-columns:1fr;gap:20px}.clock-action{max-width:240px}.source-heading{display:block}.source-heading h2{margin-bottom:12px}.distance-entry .calc-units button{padding-inline:10px}.intro [data-header-units]{margin-top:16px}.training .rep-table th:first-child{background:var(--card)}}

/* Keep the source choice, distance and clock together in a compact input row. */
.training .source{display:block}
.training .source-heading{display:flex;align-items:center;justify-content:flex-start;gap:20px;padding-bottom:20px;margin-bottom:20px;border-bottom:1px solid var(--line)}
.training .source-heading h2{margin:0}
.training .entry{display:grid;grid-template-columns:max-content minmax(0,440px);justify-content:start;align-items:start;gap:36px}
.training .clock-action{display:grid;grid-template-columns:210px auto;gap:20px;align-items:center;max-width:none}
.training .clock-action .calc-pill{min-width:130px;margin-top:4px;height:44px}
.training .source .status{margin-top:18px}
@media(max-width:1000px){.training .entry{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:24px}.training .clock-action{grid-template-columns:1fr;max-width:240px;gap:10px}.training .clock-action .calc-pill{margin:0}.training .distance-entry .calc-units{flex-wrap:wrap}}
@media(max-width:600px){.training .source-heading{display:block}.training .source-heading h2{margin-bottom:12px}.training .entry{grid-template-columns:1fr;gap:20px}.training .clock-action{max-width:100%;grid-template-columns:minmax(0,210px) auto;gap:12px}.training .clock-action .calc-pill{min-width:0;padding-inline:12px}.training .distance-entry .calc-units button{padding-inline:9px}}

@media(prefers-color-scheme:dark){
.training .intro .calc-units{background:var(--well)}
}

}
#calculator{padding-top:90px}

@media(prefers-color-scheme:dark){#calculator{--paper:#000;--card:#171719;--well:#242427;--ink:#f3f2ee;--muted:#aaaab0;--line:#36363b;--accent:#8bb59a;color-scheme:dark;color:var(--ink);background:var(--paper)}}