@charset "UTF-8";

:root {
  --paper: #f3f0e8;
  --paper-soft: #faf8f1;
  --paper-deep: #e7e3d9;
  --ink: #11130f;
  --ink-soft: #1a1d17;
  --ink-raised: #22251e;
  --text: #171914;
  --muted: #65685f;
  --muted-light: #a9ada0;
  --line: #cbc7bd;
  --line-dark: #3c4036;
  --lime: #d7ff5f;
  --lime-soft: #eaff9d;
  --danger: #a62e25;
  --success: #31551f;
  --white: #fffef8;
  --shadow: 0 18px 50px rgb(17 19 15 / 0.1);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 24px;
  --wrap: 1240px;
  --mono: ui-monospace, "SFMono-Regular", "Cascadia Code", "Roboto Mono", Menlo, Consolas, monospace;
  --sans: ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  min-width: 280px;
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
  background: var(--paper);
  color: var(--text);
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  min-width: 280px;
  margin: 0;
  overflow-x: clip;
  background:
    linear-gradient(rgb(17 19 15 / 0.025) 1px, transparent 1px) 0 0 / 100% 44px,
    var(--paper);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.55;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body:has(dialog[open]) {
  overflow: hidden;
}

[hidden] {
  display: none !important;
}

::selection {
  background: var(--lime);
  color: var(--ink);
}

img,
svg {
  display: block;
  max-width: 100%;
}

button,
input,
select,
textarea {
  margin: 0;
  color: inherit;
  font: inherit;
}

button,
input[type="range"] {
  accent-color: var(--ink);
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button {
  border: 0;
}

button:not(:disabled),
[role="button"]:not([aria-disabled="true"]) {
  cursor: pointer;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

input {
  min-width: 0;
}

input[type="number"] {
  appearance: textfield;
  -moz-appearance: textfield;
}

input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button {
  margin: 0;
  appearance: none;
}

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.22em;
}

p,
h1,
h2,
h3,
dl,
dd,
figure,
fieldset,
legend {
  margin: 0;
}

h1,
h2,
h3 {
  line-height: 1.03;
  letter-spacing: -0.045em;
  text-wrap: balance;
}

h1 {
  font-size: clamp(3.1rem, 5.4vw, 5.6rem);
  font-weight: 820;
  max-width: 980px;
}

h2 {
  font-size: clamp(2.2rem, 4.6vw, 4.7rem);
  font-weight: 790;
}

h3 {
  font-size: clamp(1.15rem, 2vw, 1.65rem);
  font-weight: 730;
}

.wrap {
  width: min(calc(100% - 48px), var(--wrap));
  margin-inline: auto;
}

.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.clipboard-fallback {
  position: fixed;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.skip-link {
  position: fixed;
  z-index: 1000;
  top: 12px;
  left: 12px;
  padding: 12px 18px;
  transform: translateY(-160%);
  border-radius: var(--radius-sm);
  background: var(--lime);
  color: var(--ink);
  font-weight: 800;
  text-decoration: none;
}

.skip-link:focus {
  transform: translateY(0);
}

.noscript-banner {
  padding: 12px 20px;
  background: var(--lime);
  color: var(--ink);
  font-size: 0.9rem;
  font-weight: 700;
  text-align: center;
}

.eyebrow,
.board-label {
  font-family: var(--mono);
  font-size: 0.74rem;
  font-weight: 780;
  letter-spacing: 0.13em;
  line-height: 1.25;
  text-transform: uppercase;
}

.eyebrow {
  color: var(--muted);
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 18px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font-size: 0.92rem;
  font-weight: 780;
  line-height: 1;
  text-decoration: none;
  transition:
    transform 160ms ease,
    background-color 160ms ease,
    border-color 160ms ease,
    color 160ms ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button:active {
  transform: translateY(0);
}

.button--primary {
  border-color: var(--lime);
  background: var(--lime);
  color: var(--ink);
  box-shadow: 0 8px 22px rgb(215 255 95 / 0.2);
}

.button--primary:hover {
  background: var(--lime-soft);
}

.button--secondary {
  border-color: var(--line-dark);
  background: transparent;
  color: var(--white);
}

.button--secondary:hover {
  border-color: var(--lime);
  color: var(--lime);
}

.button--quiet {
  border-color: var(--line);
  background: transparent;
  color: inherit;
}

.button--quiet:hover {
  border-color: var(--ink);
  background: var(--ink);
  color: var(--white);
}

.text-button {
  display: inline;
  min-height: 44px;
  padding: 8px 0;
  background: transparent;
  color: inherit;
  font-weight: 760;
  text-align: left;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.24em;
}

:where(a, button, input, summary):focus-visible {
  outline: 3px solid var(--ink);
  outline-offset: 3px;
}

:where(.timing-board, .plan-section, .race-dialog, .site-footer, .mobile-plan-bar) :where(a, button, input, summary):focus-visible {
  outline-color: var(--lime);
}

.site-header {
  position: sticky;
  z-index: 40;
  top: 0;
  border-bottom: 1px solid rgb(17 19 15 / 0.12);
  background: rgb(243 240 232 / 0.91);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
}

.site-header__inner {
  display: flex;
  min-height: 70px;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  gap: 12px;
  color: var(--ink);
  font-size: 0.9rem;
  font-weight: 580;
  letter-spacing: -0.025em;
  text-decoration: none;
}

.brand__text strong {
  font-weight: 850;
}

.brand__mark {
  position: relative;
  display: inline-block;
  width: 34px;
  height: 24px;
  flex: 0 0 auto;
}

.brand__mark::before,
.brand__mark::after {
  position: absolute;
  left: 0;
  width: 31px;
  height: 7px;
  border: 2px solid var(--ink);
  content: "";
}

.brand__mark::before {
  top: 1px;
  border-right: 0;
  border-radius: 7px 0 0 7px;
}

.brand__mark::after {
  right: 0;
  bottom: 1px;
  left: auto;
  border-left: 0;
  border-radius: 0 7px 7px 0;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 24px;
}

.site-nav > a {
  min-height: 44px;
  align-content: center;
  color: var(--muted);
  font-size: 0.84rem;
  font-weight: 700;
  text-decoration: none;
}

.site-nav > a:hover {
  color: var(--ink);
}

.unit-switch {
  display: inline-flex;
  padding: 3px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--paper-soft);
}

.unit-switch button {
  min-width: 46px;
  min-height: 44px;
  padding: 8px 12px;
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.74rem;
  font-weight: 800;
}

.unit-switch button[aria-pressed="true"] {
  background: var(--ink);
  color: var(--lime);
}

.hero {
  padding-block: clamp(20px, 2vw, 30px) clamp(54px, 7vw, 88px);
}

.hero__intro {
  display: grid;
  max-width: 1120px;
  gap: 9px;
  margin-bottom: 18px;
}

.hero__lede {
  max-width: 720px;
  color: var(--muted);
  font-size: clamp(1.08rem, 1.8vw, 1.42rem);
  letter-spacing: -0.025em;
  line-height: 1.42;
}

.calculator-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(420px, 1.05fr);
  overflow: hidden;
  border: 1px solid var(--ink);
  border-radius: var(--radius-lg);
  background: var(--paper-soft);
  box-shadow: var(--shadow);
}

.pace-form {
  display: flex;
  min-width: 0;
  flex-direction: column;
  gap: 16px;
  padding: clamp(22px, 3vw, 34px);
}

.segmented-control {
  display: inline-grid;
  width: fit-content;
  padding: 4px;
  grid-auto-flow: column;
  grid-auto-columns: minmax(0, 1fr);
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--paper-deep);
}

.segmented-control input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.segmented-control label {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  padding: 9px 17px;
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 760;
  white-space: nowrap;
  cursor: pointer;
}

.segmented-control input:checked + label {
  background: var(--ink);
  color: var(--white);
  box-shadow: 0 4px 10px rgb(17 19 15 / 0.14);
}

.segmented-control input:focus-visible + label {
  outline: 3px solid var(--lime);
  outline-offset: 2px;
}

.field-block {
  display: grid;
  gap: 12px;
}

.field-label {
  display: block;
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 740;
}

.time-fields,
.pace-fields {
  display: grid;
  align-items: end;
  gap: 10px;
}

.time-fields {
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr) auto minmax(0, 1fr);
}

.pace-fields {
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr) auto;
}

.time-fields label,
.pace-fields label {
  display: grid;
  min-width: 0;
  gap: 7px;
}

.time-fields label > span,
.pace-fields label > span {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.67rem;
  font-weight: 760;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.time-fields input,
.pace-fields input {
  width: 100%;
  min-height: 72px;
  padding: 12px 8px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--white);
  color: var(--ink);
  font-family: var(--mono);
  font-size: clamp(2.1rem, 4vw, 3.25rem);
  font-weight: 760;
  line-height: 1;
  text-align: center;
  transition:
    border-color 160ms ease,
    box-shadow 160ms ease;
}

.time-fields input:hover,
.pace-fields input:hover {
  border-color: #8d9087;
}

.time-fields input:focus,
.pace-fields input:focus {
  border-color: var(--ink);
  outline: 0;
  box-shadow: 0 0 0 4px rgb(215 255 95 / 0.55);
}

.time-fields input[aria-invalid="true"],
.pace-fields input[aria-invalid="true"] {
  border-color: var(--danger);
  box-shadow: 0 0 0 3px rgb(166 46 37 / 0.13);
}

.time-separator,
.pace-unit-badge {
  display: inline-flex;
  min-height: 72px;
  align-items: center;
  justify-content: center;
  padding-bottom: 1px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 2rem;
  font-weight: 760;
}

.pace-unit-badge {
  min-width: 50px;
  color: var(--ink);
  font-size: 1rem;
}

.form-error {
  margin-top: -10px;
  padding: 10px 12px;
  border-left: 3px solid var(--danger);
  background: rgb(166 46 37 / 0.08);
  color: var(--danger);
  font-size: 0.86rem;
  font-weight: 700;
}

.quick-goals {
  display: grid;
  gap: 10px;
}

.quick-goals > span,
.goal-slider > span:first-child,
.balance-control > span:first-child {
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 740;
}

.quick-goals__buttons,
.stop-presets {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.quick-goals button,
.stop-presets button {
  min-width: 50px;
  min-height: 44px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.77rem;
  font-weight: 740;
}

.quick-goals button:hover,
.quick-goals button[aria-current="true"],
.stop-presets button:hover,
.stop-presets button[aria-current="true"] {
  border-color: var(--ink);
  background: var(--ink);
  color: var(--lime);
}

.goal-slider,
.balance-control {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 8px 16px;
}

.goal-slider output,
.balance-control output {
  color: var(--ink);
  font-family: var(--mono);
  font-size: 0.82rem;
  font-weight: 780;
}

.goal-slider input,
.balance-control input {
  width: 100%;
  height: 44px;
  grid-column: 1 / -1;
  background: transparent;
}

.goal-slider input::-webkit-slider-runnable-track,
.balance-control input::-webkit-slider-runnable-track {
  height: 4px;
  border-radius: 999px;
  background: var(--line);
}

.goal-slider input::-moz-range-track,
.balance-control input::-moz-range-track {
  height: 4px;
  border-radius: 999px;
  background: var(--line);
}

.goal-slider input::-webkit-slider-thumb,
.balance-control input::-webkit-slider-thumb {
  width: 22px;
  height: 22px;
  margin-top: -9px;
  border: 3px solid var(--paper-soft);
  border-radius: 50%;
  appearance: none;
  background: var(--ink);
  box-shadow: 0 0 0 1px var(--ink);
}

.goal-slider input::-moz-range-thumb,
.balance-control input::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border: 3px solid var(--paper-soft);
  border-radius: 50%;
  background: var(--ink);
  box-shadow: 0 0 0 1px var(--ink);
}

.goal-slider__range,
.balance-control__ends {
  display: flex;
  grid-column: 1 / -1;
  justify-content: space-between;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.67rem;
}

.button--build {
  width: 100%;
  min-height: 58px;
  justify-content: space-between;
  padding-inline: 20px;
  border-color: var(--ink);
  background: var(--ink);
  color: var(--lime);
  box-shadow: none;
  font-size: 0.96rem;
}

.button--build:hover {
  border-color: var(--ink-soft);
  background: var(--ink-soft);
}

.local-note {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  color: var(--muted);
  font-size: 0.76rem;
}

.local-note span {
  color: var(--success);
  font-size: 0.58rem;
  line-height: 2.2;
}

.timing-board {
  position: relative;
  display: flex;
  min-width: 0;
  flex-direction: column;
  padding: clamp(24px, 3vw, 38px);
  overflow: hidden;
  background:
    radial-gradient(circle at 90% 8%, rgb(215 255 95 / 0.12), transparent 33%),
    var(--ink);
  color: var(--white);
}

.timing-board::after {
  position: absolute;
  right: 0;
  bottom: 0;
  width: 38%;
  height: 7px;
  background: var(--lime);
  content: "";
}

.timing-board__topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.timing-board .board-label {
  color: var(--muted-light);
}

.distance-chip {
  display: inline-flex;
  min-height: 34px;
  align-items: center;
  padding: 6px 10px;
  border: 1px solid var(--line-dark);
  border-radius: 999px;
  color: var(--lime);
  font-family: var(--mono);
  font-size: 0.67rem;
  font-weight: 780;
  letter-spacing: 0.08em;
}

.finish-time {
  display: block;
  margin-block: clamp(18px, 3vw, 30px) 18px;
  color: var(--lime);
  font-family: var(--mono);
  font-size: clamp(3.9rem, 7.3vw, 7.7rem);
  font-variant-numeric: tabular-nums;
  font-weight: 720;
  letter-spacing: -0.08em;
  line-height: 0.82;
  white-space: nowrap;
  transition: opacity 190ms ease, transform 190ms ease;
}

.timing-board.is-updating .finish-time,
.timing-board.is-updating .pace-readout strong {
  opacity: 0.72;
  transform: translateY(2px);
}

.board-rule {
  height: 1px;
  background: var(--line-dark);
}

.pace-readout {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 24px;
  padding-block: 20px;
}

.pace-readout > div {
  display: grid;
  gap: 8px;
}

.pace-readout strong {
  display: flex;
  align-items: baseline;
  gap: 7px;
  font-family: var(--mono);
  font-size: clamp(1.9rem, 4vw, 3.2rem);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  letter-spacing: -0.055em;
  line-height: 1;
  transition:
    opacity 190ms ease,
    transform 190ms ease;
}

.pace-readout__primary strong {
  color: var(--lime);
}

.pace-readout small,
.profile-pace small {
  color: var(--muted-light);
  font-size: 0.38em;
  font-weight: 700;
  letter-spacing: 0;
}

.board-metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 1px solid var(--line-dark);
  border-bottom: 1px solid var(--line-dark);
}

.board-metrics > div {
  min-width: 0;
  padding: 15px 12px 15px 0;
  border-right: 1px solid var(--line-dark);
}

.board-metrics > div:last-child {
  border-right: 0;
  padding-left: 12px;
}

.board-metrics dt {
  margin-bottom: 5px;
  color: var(--muted-light);
  font-size: 0.67rem;
  font-weight: 700;
  text-transform: uppercase;
}

.board-metrics dd {
  overflow: hidden;
  font-family: var(--mono);
  font-size: clamp(0.82rem, 1.35vw, 1.02rem);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.timing-track {
  width: 100%;
  margin-block: auto 8px;
  padding-top: 16px;
  overflow: visible;
}

.timing-track__line {
  fill: none;
  stroke: var(--line-dark);
  stroke-linecap: round;
  stroke-width: 5;
}

.timing-track__markers circle {
  fill: var(--ink);
  stroke: var(--lime);
  stroke-width: 4;
}

.timing-track__markers circle:first-child,
.timing-track__markers circle:last-child {
  fill: var(--lime);
}

.timing-track__labels text {
  fill: var(--muted-light);
  font-family: var(--mono);
  font-size: 14px;
  font-weight: 700;
}

.rounding-note {
  max-width: 580px;
  color: var(--muted-light);
  font-size: 0.71rem;
}

.plan-section {
  position: relative;
  padding-block: clamp(78px, 10vw, 128px);
  overflow: hidden;
  background:
    linear-gradient(90deg, transparent 49.96%, rgb(255 255 255 / 0.04) 50%, transparent 50.04%),
    var(--ink);
  color: var(--white);
}

.plan-section::before {
  position: absolute;
  top: 0;
  left: 0;
  width: 34%;
  height: 8px;
  background: var(--lime);
  content: "";
}

.plan-section .eyebrow {
  color: var(--lime);
}

.section-heading {
  display: grid;
  gap: 15px;
  margin-bottom: clamp(34px, 5vw, 58px);
}

.section-heading > p,
.section-heading > div > p:last-child {
  max-width: 720px;
  color: var(--muted);
  font-size: 1.02rem;
}

.section-heading--split {
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  gap: 28px;
}

.section-heading--split > div {
  display: grid;
  gap: 15px;
}

.plan-section .section-heading .button--quiet {
  border-color: var(--line-dark);
  color: var(--white);
}

.plan-section .section-heading .button--quiet:hover {
  border-color: var(--lime);
  background: var(--lime);
  color: var(--ink);
}

.plan-heading-actions,
.mobile-actions {
  display: flex;
  gap: 9px;
}

.plan-layout {
  display: grid;
  grid-template-columns: minmax(270px, 0.72fr) minmax(0, 1.7fr);
  gap: clamp(28px, 5vw, 68px);
  align-items: start;
}

.strategy-panel {
  position: sticky;
  top: 100px;
  display: grid;
  gap: 26px;
}

.strategy-options {
  display: grid;
  padding: 0;
  border: 0;
}

.strategy-options legend {
  margin-bottom: 12px;
  font-size: 0.86rem;
  font-weight: 780;
}

.strategy-options input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.strategy-options label {
  position: relative;
  display: grid;
  min-height: 92px;
  grid-template-columns: 1fr auto;
  gap: 4px 16px;
  padding: 17px 18px;
  border-top: 1px solid var(--line-dark);
  color: var(--muted-light);
  cursor: pointer;
}

.strategy-options label:last-of-type {
  border-bottom: 1px solid var(--line-dark);
}

.strategy-options label > span {
  color: var(--white);
  font-weight: 760;
}

.strategy-options label strong {
  color: var(--muted-light);
  font-family: var(--mono);
  font-size: 0.82rem;
  font-weight: 720;
}

.strategy-options label small {
  grid-column: 1 / -1;
  font-size: 0.76rem;
  line-height: 1.4;
}

.strategy-options input:checked + label {
  background: var(--lime);
  color: #33372d;
}

.strategy-options input:checked + label > span,
.strategy-options input:checked + label strong {
  color: var(--ink);
}

.strategy-options input:focus-visible + label {
  z-index: 1;
  outline: 3px solid var(--lime);
  outline-offset: 2px;
}

.balance-control > span:first-child,
.balance-control output {
  color: var(--white);
}

.balance-control input::-webkit-slider-runnable-track {
  background: var(--line-dark);
}

.balance-control input::-moz-range-track {
  background: var(--line-dark);
}

.balance-control input::-webkit-slider-thumb {
  border-color: var(--ink);
  background: var(--lime);
  box-shadow: 0 0 0 1px var(--lime);
}

.balance-control input::-moz-range-thumb {
  border-color: var(--ink);
  background: var(--lime);
  box-shadow: 0 0 0 1px var(--lime);
}

.half-splits {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-block: 1px solid var(--line-dark);
}

.half-splits > div {
  padding: 16px 10px 16px 0;
}

.half-splits > div + div {
  padding-left: 16px;
  border-left: 1px solid var(--line-dark);
}

.half-splits dt {
  margin-bottom: 5px;
  color: var(--muted-light);
  font-size: 0.67rem;
  text-transform: uppercase;
}

.half-splits dd {
  font-family: var(--mono);
  font-size: 1.18rem;
  font-variant-numeric: tabular-nums;
  font-weight: 720;
}

.advanced-settings,
.fine-tune {
  border-bottom: 1px solid var(--line-dark);
}

.advanced-settings summary,
.fine-tune summary,
.questions summary {
  position: relative;
  min-height: 52px;
  padding: 14px 40px 14px 0;
  font-weight: 760;
  list-style: none;
  cursor: pointer;
}

.advanced-settings summary::-webkit-details-marker,
.fine-tune summary::-webkit-details-marker,
.questions summary::-webkit-details-marker {
  display: none;
}

.advanced-settings summary::after,
.fine-tune summary::after,
.questions summary::after {
  position: absolute;
  top: 50%;
  right: 4px;
  width: 24px;
  height: 24px;
  transform: translateY(-50%);
  content: "+";
  font-family: var(--mono);
  font-size: 1.2rem;
  font-weight: 500;
  line-height: 24px;
  text-align: center;
}

.advanced-settings[open] summary::after,
.fine-tune[open] summary::after,
.questions details[open] summary::after {
  content: "−";
}

.advanced-settings__body {
  display: grid;
  gap: 15px;
  padding: 6px 0 22px;
  color: var(--muted-light);
  font-size: 0.78rem;
}

.advanced-settings__body > label:not(.balance-control) {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  color: var(--white);
  font-weight: 700;
}

.inline-input {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--muted-light);
  font-family: var(--mono);
  font-size: 0.72rem;
}

.inline-input input {
  width: 76px;
  min-height: 44px;
  padding: 8px;
  border: 1px solid var(--line-dark);
  border-radius: var(--radius-sm);
  background: var(--ink-raised);
  color: var(--white);
  font-family: var(--mono);
  font-weight: 700;
  text-align: center;
}

.fine-tune {
  border-color: var(--line);
}

.fine-tune summary {
  min-height: 44px;
  padding-block: 10px;
}

.fine-tune .goal-slider {
  padding: 8px 0 16px;
}

.advanced-settings__body .balance-control {
  color: var(--white);
}

.stop-presets button {
  border-color: var(--line-dark);
  color: var(--muted-light);
}

.stop-presets button:hover,
.stop-presets button[aria-current="true"] {
  border-color: var(--lime);
  background: var(--lime);
  color: var(--ink);
}

.plan-main {
  min-width: 0;
}

.pace-profile-card {
  padding: clamp(22px, 3.5vw, 36px);
  border: 1px solid var(--line-dark);
  border-radius: var(--radius-lg);
  background: var(--ink-soft);
}

.pace-profile-card__header {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 20px;
}

.pace-profile-card__header > div:first-child {
  display: grid;
  gap: 8px;
}

.pace-profile-card__header h3 {
  font-size: clamp(1.55rem, 3vw, 2.5rem);
}

.profile-pace {
  display: flex;
  align-items: baseline;
  gap: 6px;
  color: var(--lime);
  font-family: var(--mono);
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  font-weight: 720;
  letter-spacing: -0.05em;
  white-space: nowrap;
}

#pace-profile {
  width: 100%;
  overflow: visible;
}

.profile-grid line {
  stroke: var(--line-dark);
  stroke-dasharray: 4 8;
  stroke-width: 1;
}

.profile-area {
  fill: rgb(215 255 95 / 0.08);
  transition: d 200ms ease;
}

.profile-line {
  fill: none;
  stroke: var(--lime);
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 5;
  transition: d 200ms ease;
}

.profile-points circle {
  fill: var(--ink-soft);
  stroke: var(--lime);
  stroke-width: 4;
}

.profile-axis text {
  fill: var(--muted-light);
  font-family: var(--mono);
  font-size: 14px;
  font-weight: 700;
}

.pace-profile-card figcaption {
  max-width: 780px;
  margin-top: 12px;
  color: var(--muted-light);
  font-size: 0.77rem;
}

.pace-profile-card figcaption strong {
  color: var(--white);
  font-family: var(--mono);
  font-weight: 700;
}

.milestones {
  display: grid;
  padding: 0;
  margin: 18px 0 0;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  border-block: 1px solid var(--line-dark);
  list-style: none;
}

.milestones li {
  display: grid;
  min-width: 0;
  gap: 6px;
  padding: 15px 12px;
  border-right: 1px solid var(--line-dark);
}

.milestones li:first-child {
  padding-left: 0;
}

.milestones li:last-child {
  padding-right: 0;
  border-right: 0;
}

.milestones span {
  color: var(--muted-light);
  font-size: 0.66rem;
  font-weight: 700;
  text-transform: uppercase;
}

.milestones strong {
  overflow: hidden;
  font-family: var(--mono);
  font-size: clamp(0.76rem, 1.25vw, 0.98rem);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.splits-section {
  margin-top: clamp(62px, 8vw, 102px);
  padding-top: clamp(34px, 5vw, 58px);
  border-top: 1px solid var(--line-dark);
}

.splits-toolbar {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 28px;
  margin-bottom: 24px;
}

.splits-toolbar > div {
  display: grid;
  max-width: 720px;
  gap: 12px;
}

.splits-toolbar h3 {
  font-size: clamp(1.45rem, 3vw, 2.55rem);
}

.plan-section .segmented-control {
  border-color: var(--line-dark);
  background: var(--ink-raised);
}

.plan-section .segmented-control label {
  color: var(--muted-light);
}

.plan-section .segmented-control input:checked + label {
  background: var(--lime);
  color: var(--ink);
}

.table-scroll {
  max-width: 100%;
  overflow-x: auto;
  overscroll-behavior-inline: contain;
  scrollbar-width: thin;
}

.table-scroll:focus-visible {
  outline: 3px solid var(--lime);
  outline-offset: 4px;
}

.splits-table,
.reference-table,
.print-plan table {
  width: 100%;
  border-collapse: collapse;
  font-variant-numeric: tabular-nums;
}

.splits-table {
  min-width: 620px;
}

.splits-table th,
.splits-table td {
  padding: 15px 14px;
  border-bottom: 1px solid var(--line-dark);
  font-family: var(--mono);
  font-size: 0.83rem;
  text-align: right;
  white-space: nowrap;
}

.splits-table th:first-child,
.splits-table td:first-child {
  padding-left: 0;
  text-align: left;
}

.splits-table th:last-child,
.splits-table td:last-child {
  padding-right: 0;
}

.splits-table thead th {
  color: var(--muted-light);
  font-family: var(--sans);
  font-size: 0.67rem;
  font-weight: 720;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.splits-table tbody th {
  color: var(--white);
  font-weight: 720;
}

.splits-table tbody td {
  color: #d8dbd1;
}

.splits-table tr.finish-row th,
.splits-table tr.finish-row td {
  border-bottom-color: var(--lime);
  color: var(--lime);
  font-weight: 800;
}

.export-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-top: 24px;
}

.reference-section {
  padding-block: clamp(80px, 10vw, 132px);
}

.reference-section .section-heading--split {
  align-items: start;
}

.reference-tools {
  display: grid;
  grid-template-columns: auto minmax(220px, 340px) minmax(0, 1fr);
  align-items: center;
  gap: 14px;
  padding-block: 18px;
  border-top: 1px solid var(--ink);
}

.reference-tools label {
  font-size: 0.82rem;
  font-weight: 750;
}

.reference-tools input {
  min-height: 46px;
  padding: 10px 13px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--paper-soft);
  font-family: var(--mono);
  font-size: 0.86rem;
}

.reference-tools input:focus {
  border-color: var(--ink);
  outline: 0;
  box-shadow: 0 0 0 3px rgb(215 255 95 / 0.65);
}

.reference-tools p {
  min-height: 1.4em;
  color: var(--muted);
  font-size: 0.76rem;
}

.reference-table-wrap {
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
}

.reference-table {
  min-width: 620px;
}

.reference-table caption {
  padding: 12px 0;
  color: var(--muted);
  font-size: 0.74rem;
  text-align: left;
}

.reference-table th,
.reference-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 0.83rem;
  text-align: right;
  white-space: nowrap;
}

.reference-table th:first-child,
.reference-table td:first-child {
  padding-left: 0;
  text-align: left;
}

.reference-table th:last-child,
.reference-table td:last-child {
  padding-right: 0;
}

.reference-table thead th {
  position: sticky;
  z-index: 1;
  top: 69px;
  background: var(--paper);
  color: var(--muted);
  font-family: var(--sans);
  font-size: 0.67rem;
  font-weight: 760;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.reference-table tbody tr:last-child th,
.reference-table tbody tr:last-child td {
  border-bottom: 0;
}

.reference-table tbody tr {
  transition: background-color 140ms ease;
}

.reference-table tbody tr:hover {
  background: rgb(255 254 248 / 0.72);
}

.reference-table tbody tr.is-current {
  background: var(--lime);
}

.reference-table tbody tr.is-search-match {
  box-shadow: inset 4px 0 0 var(--ink);
}

.chart-goal {
  min-width: 84px;
  min-height: 44px;
  padding: 7px 10px;
  border-radius: 6px;
  background: transparent;
  color: inherit;
  font-family: var(--mono);
  font-weight: 780;
  text-align: left;
}

.chart-goal:hover,
.chart-goal[aria-current="true"] {
  background: var(--ink);
  color: var(--lime);
}

.unit-suffix {
  margin-left: 2px;
  color: var(--muted);
  font-size: 0.68em;
}

.chart-extra {
  display: none;
}

body.chart-extras-visible .chart-extra {
  display: table-cell;
}

.method-section {
  padding-block: clamp(80px, 10vw, 132px);
  border-top: 1px solid var(--ink);
  background: var(--paper-soft);
}

.method-steps {
  display: grid;
  padding: 0;
  margin: 0 0 clamp(62px, 8vw, 100px);
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-block: 1px solid var(--ink);
  list-style: none;
}

.method-steps li {
  display: grid;
  min-width: 0;
  grid-template-columns: auto 1fr;
  gap: 16px;
  padding: clamp(22px, 3vw, 34px);
  border-right: 1px solid var(--ink);
}

.method-steps li:first-child {
  padding-left: 0;
}

.method-steps li:last-child {
  padding-right: 0;
  border-right: 0;
}

.method-steps li > span {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 760;
}

.method-steps li > div {
  display: grid;
  gap: 10px;
}

.method-steps p,
.method-grid p,
.questions p {
  color: var(--muted);
  font-size: 0.9rem;
}

.method-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(28px, 4vw, 54px);
}

.method-grid article {
  display: grid;
  align-content: start;
  gap: 14px;
}

.method-grid a {
  font-weight: 700;
}

.questions {
  max-width: 900px;
  margin-top: clamp(72px, 9vw, 116px);
}

.questions > h3 {
  margin-bottom: 20px;
  font-size: clamp(1.6rem, 3vw, 2.55rem);
}

.questions details {
  border-top: 1px solid var(--line);
}

.questions details:last-child {
  border-bottom: 1px solid var(--line);
}

.questions summary {
  min-height: 64px;
  padding-block: 19px;
}

.questions p {
  max-width: 760px;
  padding: 0 44px 22px 0;
}

.site-footer {
  padding-block: 44px;
  background: var(--ink);
  color: var(--white);
}

.site-footer__inner {
  display: grid;
  grid-template-columns: 1.15fr auto 0.85fr;
  align-items: center;
  gap: 36px;
}

.brand--footer {
  color: var(--white);
}

.brand--footer .brand__mark::before,
.brand--footer .brand__mark::after {
  border-color: var(--lime);
}

.site-footer__inner > div > p,
.footer-note {
  margin-top: 8px;
  color: var(--muted-light);
  font-size: 0.75rem;
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
}

.site-footer nav a {
  min-height: 44px;
  align-content: center;
  color: var(--muted-light);
  font-size: 0.78rem;
  font-weight: 700;
  text-decoration: none;
}

.site-footer nav a:hover {
  color: var(--lime);
}

.footer-note {
  max-width: 250px;
  margin-top: 0;
  justify-self: end;
  text-align: right;
}

.site-dialog {
  width: min(760px, calc(100% - 32px));
  max-height: min(86vh, 820px);
  padding: 0;
  overflow: hidden;
  border: 1px solid var(--ink);
  border-radius: var(--radius-lg);
  background: var(--paper-soft);
  color: var(--text);
  box-shadow: 0 30px 90px rgb(0 0 0 / 0.35);
}

.site-dialog::backdrop {
  background: rgb(17 19 15 / 0.75);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}

.site-dialog[open] {
  animation: dialog-in 180ms ease-out both;
}

.site-dialog > article {
  display: grid;
  max-height: inherit;
  grid-template-rows: auto minmax(0, 1fr);
}

.site-dialog header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 24px clamp(22px, 4vw, 38px);
  border-bottom: 1px solid var(--line);
}

.site-dialog header > div {
  display: grid;
  gap: 7px;
}

.site-dialog h2 {
  font-size: clamp(2rem, 5vw, 3.3rem);
}

.dialog-close {
  width: 46px;
  height: 46px;
  flex: 0 0 auto;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: transparent;
  color: var(--ink);
  font-family: var(--mono);
  font-size: 1.7rem;
  line-height: 1;
}

.dialog-close:hover {
  border-color: var(--ink);
  background: var(--ink);
  color: var(--lime);
}

.dialog-body {
  display: grid;
  gap: 14px;
  padding: clamp(24px, 5vw, 42px);
  overflow-y: auto;
}

.dialog-body h3 {
  margin-top: 14px;
  font-size: 1.1rem;
  letter-spacing: -0.025em;
}

.dialog-body p,
.dialog-body li {
  color: var(--muted);
  font-size: 0.91rem;
}

.dialog-updated {
  margin-top: 18px;
  font-family: var(--mono);
  font-size: 0.72rem !important;
}

.methodology-copy pre {
  max-width: 100%;
  padding: 16px;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--paper-deep);
  font-family: var(--mono);
  font-size: 0.76rem;
}

.methodology-copy code {
  font-family: var(--mono);
}

.race-dialog {
  width: 100vw;
  max-width: none;
  height: 100dvh;
  max-height: none;
  padding: 0;
  margin: 0;
  overflow-y: auto;
  border: 0;
  background: var(--ink);
  color: var(--white);
}

.race-dialog::backdrop {
  background: var(--ink);
}

.race-dialog > article {
  min-height: 100%;
  display: grid;
  grid-template-rows: auto 1fr;
}

.race-dialog header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: max(20px, env(safe-area-inset-top)) max(24px, env(safe-area-inset-right)) 18px max(24px, env(safe-area-inset-left));
  border-bottom: 1px solid var(--line-dark);
}

.race-dialog header .eyebrow,
.race-marker-label,
.race-clock-label {
  color: var(--muted-light);
}

.race-dialog h2 {
  font-size: clamp(2rem, 5vw, 4rem);
}

.race-dialog .dialog-close {
  border-color: var(--line-dark);
  color: var(--lime);
}

.race-view {
  width: min(900px, 100%);
  display: grid;
  align-content: center;
  gap: clamp(10px, 2.2vh, 24px);
  padding: 24px max(24px, env(safe-area-inset-right)) max(24px, env(safe-area-inset-bottom)) max(24px, env(safe-area-inset-left));
  margin-inline: auto;
  text-align: center;
}

.race-summary {
  display: flex;
  justify-content: center;
  gap: clamp(20px, 7vw, 72px);
  color: var(--muted-light);
  font-family: var(--mono);
}

.race-summary strong {
  color: var(--white);
}

.race-marker-label,
.race-clock-label {
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.race-marker,
.race-clock {
  color: var(--lime);
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  line-height: 0.9;
}

.race-marker {
  font-size: clamp(2.4rem, 8vw, 6rem);
}

.race-clock {
  font-size: clamp(4rem, 15vw, 10rem);
  font-weight: 760;
  letter-spacing: -0.08em;
}

.race-next {
  color: var(--white);
  font-family: var(--mono);
  font-size: clamp(1rem, 2.4vw, 1.5rem);
}

.race-controls {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.wake-lock-control {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-self: center;
  gap: 10px;
  color: var(--muted-light);
  cursor: pointer;
}

.wake-lock-control input {
  width: 22px;
  height: 22px;
  accent-color: var(--lime);
}

.race-disclaimer {
  color: var(--muted-light);
  font-size: 0.75rem;
}

.toast {
  position: fixed;
  z-index: 100;
  right: max(20px, env(safe-area-inset-right));
  bottom: max(20px, env(safe-area-inset-bottom));
  max-width: min(360px, calc(100% - 40px));
  padding: 13px 16px;
  border: 1px solid var(--lime);
  border-radius: var(--radius-sm);
  background: var(--ink);
  color: var(--white);
  box-shadow: 0 16px 40px rgb(0 0 0 / 0.24);
  font-size: 0.82rem;
  font-weight: 700;
}

.toast.is-error {
  border-color: #ff8d82;
}

.mobile-plan-bar {
  display: none;
}

.mobile-plan-bar > .mobile-actions--plan {
  display: none;
}

.timing-board.is-emphasized .finish-time,
.timing-board.is-emphasized .pace-readout strong {
  animation: result-nudge 200ms ease-out;
}

.print-sheet {
  display: none;
}

.error-page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 28px;
}

.error-shell {
  display: grid;
  width: min(720px, 100%);
  gap: 22px;
  padding: clamp(28px, 6vw, 64px);
  border: 1px solid var(--ink);
  border-radius: var(--radius-lg);
  background: var(--paper-soft);
  box-shadow: var(--shadow);
}

.brand--standalone {
  margin-bottom: 34px;
}

.error-shell h1 {
  font-size: clamp(2.5rem, 7vw, 5.5rem);
}

.error-shell > p:not(.eyebrow) {
  max-width: 520px;
  color: var(--muted);
}

.error-shell .button {
  width: fit-content;
  margin-top: 10px;
}

@keyframes dialog-in {
  from {
    opacity: 0;
    transform: translateY(12px) scale(0.985);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes result-nudge {
  50% {
    color: var(--white);
    transform: translateY(-2px);
  }
}

@media (max-width: 1040px) {
  .calculator-grid {
    grid-template-columns: minmax(0, 1fr) minmax(390px, 0.95fr);
  }

  .pace-form,
  .timing-board {
    padding: 32px;
  }

  .finish-time {
    font-size: clamp(3.5rem, 7vw, 5.5rem);
  }

  .board-metrics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .board-metrics > div:nth-child(2) {
    border-right: 0;
  }

  .board-metrics > div:nth-child(-n + 2) {
    border-bottom: 1px solid var(--line-dark);
  }

  .board-metrics > div:nth-child(3) {
    padding-left: 0;
  }

  .board-metrics > div:nth-child(4) {
    padding-left: 12px;
  }

  .milestones {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .milestones li:nth-child(3) {
    border-right: 0;
  }

  .milestones li:nth-child(-n + 3) {
    border-bottom: 1px solid var(--line-dark);
  }

  .milestones li:nth-child(4) {
    padding-left: 0;
  }

  .site-footer__inner {
    grid-template-columns: 1fr auto;
  }

  .footer-note {
    grid-column: 1 / -1;
    justify-self: start;
    text-align: left;
  }
}

@media (max-width: 860px) {
  html {
    scroll-padding-top: 74px;
  }

  .site-header__inner {
    min-height: 64px;
  }

  .site-nav > a {
    display: none;
  }

  .calculator-grid {
    grid-template-columns: 1fr;
  }

  .timing-board {
    min-height: 520px;
  }

  .finish-time {
    font-size: clamp(4.2rem, 14vw, 7rem);
  }

  .plan-layout {
    grid-template-columns: 1fr;
  }

  .strategy-panel {
    position: static;
    grid-template-columns: minmax(0, 1fr) minmax(260px, 0.75fr);
    align-items: start;
  }

  .strategy-options {
    grid-row: span 3;
  }

  .splits-toolbar {
    align-items: start;
    flex-direction: column;
  }

  .method-steps,
  .method-grid {
    grid-template-columns: 1fr;
  }

  .method-steps li {
    padding-inline: 0;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .method-steps li:last-child {
    border-bottom: 0;
  }
}

@media (max-width: 680px) {
  body {
    padding-bottom: calc(82px + env(safe-area-inset-bottom));
    background:
      linear-gradient(rgb(17 19 15 / 0.025) 1px, transparent 1px) 0 0 / 100% 38px,
      var(--paper);
  }

  .wrap {
    width: min(calc(100% - 32px), var(--wrap));
  }

  h1 {
    font-size: clamp(2.75rem, 14vw, 4.5rem);
  }

  h2 {
    font-size: clamp(2rem, 10vw, 3.4rem);
  }

  .brand__text {
    max-width: 130px;
    line-height: 1.05;
  }

  .site-header__inner {
    gap: 10px;
  }

  .unit-switch button {
    min-width: 42px;
    padding-inline: 10px;
  }

  .hero {
    padding-block: 38px 72px;
  }

  .hero__intro {
    margin-bottom: 28px;
  }

  .hero__lede {
    font-size: 1rem;
  }

  .calculator-grid {
    border-radius: 18px;
  }

  .pace-form,
  .timing-board {
    padding: 24px;
  }

  .pace-form {
    gap: 21px;
  }

  .segmented-control {
    width: 100%;
  }

  .segmented-control label {
    padding-inline: 12px;
  }

  .time-fields,
  .pace-fields {
    gap: 6px;
  }

  .time-fields input,
  .pace-fields input {
    min-height: 74px;
    font-size: clamp(1.75rem, 10vw, 2.65rem);
  }

  .time-separator,
  .pace-unit-badge {
    min-height: 74px;
    font-size: 1.3rem;
  }

  .pace-unit-badge {
    min-width: 38px;
    font-size: 0.8rem;
  }

  .quick-goals__buttons {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .quick-goals button {
    min-width: 0;
    padding-inline: 5px;
  }

  .timing-board {
    min-height: 500px;
  }

  .finish-time {
    margin-block: 30px 24px;
    font-size: clamp(3.4rem, 17vw, 5.4rem);
  }

  .pace-readout {
    grid-template-columns: 1fr 1fr;
    gap: 14px;
  }

  .pace-readout strong {
    font-size: clamp(1.55rem, 8vw, 2.25rem);
  }

  .timing-track {
    padding-top: 14px;
  }

  .section-heading--split {
    grid-template-columns: 1fr;
    align-items: start;
  }

  .section-heading--split .button {
    width: fit-content;
  }

  .plan-section {
    padding-block: 72px;
  }

  .strategy-panel {
    grid-template-columns: 1fr;
  }

  .strategy-options {
    grid-row: auto;
  }

  .pace-profile-card {
    padding: 18px;
    border-radius: 16px;
  }

  .pace-profile-card__header {
    align-items: start;
    flex-direction: column;
    gap: 14px;
  }

  .profile-axis text {
    font-size: 17px;
  }

  .milestones {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .milestones li:nth-child(3) {
    border-right: 1px solid var(--line-dark);
  }

  .milestones li:nth-child(2n) {
    border-right: 0;
  }

  .milestones li:nth-child(-n + 4) {
    border-bottom: 1px solid var(--line-dark);
  }

  .milestones li:nth-child(4) {
    padding-left: 12px;
  }

  .milestones li:nth-child(2n + 1) {
    padding-left: 0;
  }

  .milestones strong {
    font-size: 0.84rem;
  }

  .split-control {
    display: grid;
    grid-auto-flow: column;
    width: 100%;
  }

  .export-actions {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .export-actions .button:last-child {
    grid-column: 1 / -1;
  }

  .reference-tools {
    grid-template-columns: 1fr;
    align-items: start;
  }

  .reference-tools input {
    width: 100%;
  }

  .reference-table thead th {
    top: 63px;
  }

  .site-footer__inner {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .site-footer nav {
    gap: 14px;
  }

  .footer-note {
    grid-column: auto;
  }

  .mobile-plan-bar {
    position: fixed;
    z-index: 50;
    right: 0;
    bottom: 0;
    left: 0;
    display: flex;
    min-height: calc(72px + env(safe-area-inset-bottom));
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    padding: 10px max(16px, env(safe-area-inset-right)) calc(10px + env(safe-area-inset-bottom)) max(16px, env(safe-area-inset-left));
    border-top: 1px solid var(--line-dark);
    background: rgb(17 19 15 / 0.96);
    color: var(--white);
    -webkit-backdrop-filter: blur(16px);
    backdrop-filter: blur(16px);
  }

  .mobile-plan-bar > div {
    display: grid;
    min-width: 0;
    gap: 2px;
  }

  .mobile-plan-bar span {
    color: var(--muted-light);
    font-size: 0.64rem;
    font-weight: 700;
    text-transform: uppercase;
  }

  .mobile-plan-bar strong {
    overflow: hidden;
    font-family: var(--mono);
    font-size: 0.98rem;
    font-variant-numeric: tabular-nums;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .mobile-plan-bar .button {
    min-height: 44px;
    flex: 0 0 auto;
    padding-inline: 15px;
  }

  body.plan-in-view .mobile-plan-bar > div:first-child,
  body.plan-in-view .mobile-actions--calculator {
    display: none;
  }

  body.plan-in-view .mobile-actions--plan {
    display: flex;
  }

  .toast {
    bottom: calc(92px + env(safe-area-inset-bottom));
  }

  .site-dialog {
    width: calc(100% - 20px);
    max-height: 92vh;
    border-radius: 16px;
  }
}

@media (max-width: 390px) {
  .wrap {
    width: min(calc(100% - 24px), var(--wrap));
  }

  .brand {
    gap: 8px;
    font-size: 0.78rem;
  }

  .brand__mark {
    width: 30px;
    transform: scale(0.88);
    transform-origin: left center;
  }

  .unit-switch {
    padding: 2px;
  }

  .unit-switch button {
    min-width: 44px;
    min-height: 44px;
    padding: 7px;
  }

  .pace-form,
  .timing-board {
    padding: 19px;
  }

  .time-fields input,
  .pace-fields input {
    min-height: 68px;
    padding-inline: 3px;
    font-size: clamp(1.55rem, 10vw, 2.15rem);
  }

  .time-separator,
  .pace-unit-badge {
    min-height: 68px;
  }

  .quick-goals__buttons {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 5px;
  }

  .quick-goals button {
    min-height: 44px;
    font-size: 0.7rem;
  }

  .finish-time {
    font-size: clamp(3.05rem, 16.5vw, 4.2rem);
  }

  .distance-chip {
    padding-inline: 8px;
    font-size: 0.6rem;
  }

  .pace-readout strong {
    font-size: 1.45rem;
  }

  .board-metrics dd {
    font-size: 0.76rem;
  }

  .export-actions {
    grid-template-columns: 1fr;
  }

  .export-actions .button:last-child {
    grid-column: auto;
  }

  .mobile-plan-bar .button {
    padding-inline: 12px;
    font-size: 0.78rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

@media (forced-colors: active) {
  :where(.unit-switch button[aria-pressed="true"], .segmented-control input:checked + label, .strategy-options input:checked + label, [aria-current="true"]) {
    border: 2px solid Highlight;
    background: Highlight;
    color: HighlightText;
  }

  :where(a, button, input, summary):focus-visible {
    outline-color: Highlight;
  }

  :where(.timing-board, .race-dialog, .plan-section) {
    border-color: CanvasText;
  }
}

@media print {
  @page {
    size: auto;
    margin: 10mm;
  }

  html,
  body {
    min-width: 0;
    background: #fff !important;
    color: #000 !important;
  }

  body {
    padding: 0 !important;
  }

  body > :not(.print-sheet) {
    display: none !important;
  }

  .print-sheet {
    display: block !important;
    color: #000;
    font-family: Arial, Helvetica, sans-serif;
  }

  body[data-print-mode="plan"] [data-print-section="band"],
  body[data-print-mode="band"] [data-print-section="plan"] {
    display: none !important;
  }

  .print-plan header {
    padding-bottom: 8mm;
    border-bottom: 2px solid #000;
  }

  .print-plan header > p,
  .pace-band__brand {
    margin: 0 0 3mm;
    font-family: "Courier New", monospace;
    font-size: 9pt;
    font-weight: 700;
    letter-spacing: 0.12em;
  }

  .print-plan h2 {
    margin: 0 0 3mm;
    font-size: 30pt;
    letter-spacing: -0.04em;
  }

  .print-summary {
    font-family: "Courier New", monospace;
    font-size: 13pt;
    font-weight: 700;
  }

  .print-plan table {
    margin-top: 7mm;
  }

  .print-plan th,
  .print-plan td {
    padding: 3mm 2mm;
    border-bottom: 0.4mm solid #999;
    font-family: "Courier New", monospace;
    font-size: 10pt;
    text-align: right;
  }

  .print-plan th:first-child,
  .print-plan td:first-child {
    text-align: left;
  }

  .print-plan thead th {
    font-family: Arial, Helvetica, sans-serif;
    font-size: 8pt;
    letter-spacing: 0.08em;
    text-transform: uppercase;
  }

  .print-plan footer {
    margin-top: 7mm;
    font-size: 8pt;
  }

  .pace-band {
    width: 255mm;
    min-height: 48mm;
    display: grid;
    grid-template-columns: 44mm 43mm 1fr;
    align-items: stretch;
    border: 1.2mm solid #000;
    page-break-inside: avoid;
  }

  .pace-band__brand {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 4mm;
    margin: 0;
    border-right: 0.7mm solid #000;
    writing-mode: vertical-rl;
    transform: rotate(180deg);
    text-align: center;
  }

  .pace-band__goal,
  .pace-band__pace {
    display: grid;
    align-content: center;
    gap: 1mm;
    padding: 4mm;
    border-right: 0.7mm solid #000;
  }

  .pace-band__goal span,
  .pace-band__pace span,
  .pace-band__markers small {
    font-family: Arial, Helvetica, sans-serif;
    font-size: 7pt;
    font-weight: 700;
    letter-spacing: 0.1em;
  }

  .pace-band__goal strong,
  .pace-band__pace strong {
    font-family: "Courier New", monospace;
    font-size: 17pt;
  }

  .pace-band__markers {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
  }

  .pace-band__markers > span {
    display: grid;
    align-content: center;
    gap: 1.2mm;
    padding: 3mm;
    border-right: 0.4mm solid #999;
    font-family: "Courier New", monospace;
    font-size: 11pt;
    font-weight: 700;
    text-align: center;
  }

  .pace-band__markers > span:last-child {
    border-right: 0;
  }

  .pace-band__markers small {
    display: block;
  }
}