/* Shared Tercero Capacity Ledger visual system. */
:root {
  --ink: #132319;
  --forest: #173f2b;
  --forest-deep: #0f2f20;
  --paper: #edf0de;
  --paper-warm: #f4efe3;
  --paper-light: #faf9f2;
  --lime: #c7e86a;
  --lime-bright: #d7ff3f;
  --sage: #96a788;
  --sage-light: #cad3bd;
  --line: rgba(19, 35, 25, 0.22);
  --muted: #657266;
  --white: #fffef8;
  --focus: #174cff;
  --display: Georgia, "Times New Roman", serif;
  --body: "Gill Sans", "Avenir Next", Avenir, system-ui, sans-serif;
  --mono: "Courier New", Courier, monospace;
  --page: min(1440px, calc(100% - 64px));
  --section-space: clamp(88px, 11vw, 168px);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: #11110f;
  color: var(--ink);
  font-family: var(--body);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

button,
input {
  font: inherit;
}

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

a {
  color: inherit;
}

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

figure,
h1,
h2,
h3,
p,
ul,
ol {
  margin: 0;
}

button {
  cursor: pointer;
}

button:focus-visible,
a:focus-visible,
input:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
  box-shadow: 0 0 0 6px var(--white);
}

[hidden] {
  display: none !important;
}

.concept-deck {
  position: sticky;
  z-index: 100;
  top: 0;
  display: grid;
  grid-template-columns: minmax(180px, 1fr) auto minmax(150px, 1fr);
  align-items: center;
  min-height: 70px;
  padding: 10px 18px;
  border-bottom: 1px solid #ccc9bd;
  background: rgba(244, 242, 235, 0.97);
  box-shadow: 0 12px 28px rgba(17, 17, 15, 0.12);
  color: #11110f;
  backdrop-filter: blur(12px);
}

.deck-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font: 700 0.68rem/1 var(--mono);
  letter-spacing: 0.08em;
}

.deck-brand img {
  width: 34px;
  height: 34px;
  object-fit: cover;
  border: 1px solid #b9b6aa;
  border-radius: 50%;
  mix-blend-mode: multiply;
}

.concept-tabs {
  display: flex;
  gap: 8px;
  justify-self: center;
}

.concept-tab {
  display: inline-flex;
  min-height: 40px;
  align-items: center;
  gap: 8px;
  padding: 8px 14px 8px 9px;
  border: 1px solid #c8c5b9;
  border-radius: 999px;
  background: transparent;
  color: #11110f;
  font: 700 0.68rem/1 var(--body);
  letter-spacing: 0.025em;
  transition: border-color 180ms ease, background-color 180ms ease, transform 180ms ease;
}

.concept-tab b {
  display: grid;
  width: 25px;
  height: 25px;
  place-items: center;
  border: 1px solid currentColor;
  border-radius: 50%;
  font-family: var(--display);
  font-size: 0.7rem;
}

.concept-tab:hover {
  border-color: #11110f;
  transform: translateY(-1px);
}

.concept-tab.is-active {
  border-color: var(--lime-bright);
  background: var(--lime-bright);
}

.concept-tab.is-active b {
  background: #11110f;
  color: var(--lime-bright);
}

.concept-deck > p {
  justify-self: end;
  color: #6f6d65;
  font: 700 0.68rem/1 var(--mono);
  letter-spacing: 0.05em;
}

.concept-deck > p strong {
  color: #11110f;
}

.concept-deck > p a {
  text-underline-offset: 3px;
}

.concept {
  min-height: 100vh;
  overflow: hidden;
  animation: concept-reveal 500ms cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes concept-reveal {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
}

.site-nav {
  display: flex;
  width: var(--page);
  min-height: 96px;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  margin: 0 auto;
  border-bottom: 1px solid var(--line);
}

.site-nav > div {
  display: flex;
  align-items: center;
  gap: clamp(20px, 3vw, 44px);
}

.site-nav > div > a {
  font-size: 0.82rem;
  font-weight: 700;
  text-decoration: none;
}

.site-nav > div > a:hover {
  text-decoration: underline;
  text-underline-offset: 5px;
}

.site-nav button,
.hero-actions button,
.site-footer button {
  min-height: 46px;
  padding: 12px 18px;
  border: 1px solid var(--forest);
  background: var(--forest);
  color: var(--white);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  transition: background-color 180ms ease, color 180ms ease, transform 180ms ease;
}

.site-nav button:hover,
.hero-actions button:hover,
.site-footer button:hover {
  background: var(--lime);
  color: var(--forest-deep);
  transform: translateY(-2px);
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  color: var(--forest-deep);
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-decoration: none;
}

.wordmark img {
  width: 43px;
  height: 43px;
  object-fit: cover;
  border: 1px solid var(--sage);
  mix-blend-mode: multiply;
}

.wordmark span {
  display: flex;
  flex-direction: column;
}

.wordmark small {
  margin-top: 2px;
  font-size: 0.54rem;
  letter-spacing: 0.28em;
}

.hero-copy > span,
.capacity-calculator span,
.workflow-lines header > span,
.human-work header > span,
.flow-work header > span,
.process-section header > span,
.site-footer > span {
  font: 700 0.67rem/1.25 var(--mono);
  letter-spacing: 0.075em;
}

.hero-copy h1 {
  max-width: 880px;
  font-family: var(--display);
  font-size: clamp(3.5rem, 6.5vw, 7.25rem);
  font-weight: 500;
  line-height: 0.91;
  letter-spacing: -0.055em;
}

.hero-copy > p {
  max-width: 740px;
  font-size: clamp(1rem, 1.25vw, 1.22rem);
  line-height: 1.65;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 24px;
}

.hero-actions a {
  font-size: 0.84rem;
  font-weight: 800;
  text-underline-offset: 5px;
}

.hero-image figcaption,
.human-hero figcaption,
.flow-hero figcaption {
  padding-top: 10px;
  font: 700 0.62rem/1.3 var(--mono);
  letter-spacing: 0.07em;
}

.capacity-calculator {
  width: var(--page);
  margin: 0 auto;
}

.calculator-intro h2,
.workflow-lines h2,
.human-work h2,
.flow-work h2,
.process-section h2,
.site-footer h2 {
  font-family: var(--display);
  font-size: clamp(2.35rem, 4.2vw, 4.8rem);
  font-weight: 500;
  line-height: 0.98;
  letter-spacing: -0.042em;
}

.calculator-intro > p {
  max-width: 520px;
  font-size: 1rem;
  line-height: 1.6;
}

.period-toggle {
  display: inline-flex;
  gap: 3px;
  padding: 3px;
  border: 1px solid currentColor;
}

.period-toggle button {
  min-height: 36px;
  padding: 8px 12px;
  border: 0;
  background: transparent;
  color: inherit;
  font-size: 0.72rem;
  font-weight: 800;
}

.period-toggle button.is-selected {
  background: var(--lime);
  color: var(--forest-deep);
}

.calculator-control label {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
}

.calculator-control label > span {
  color: inherit;
}

.calculator-control output {
  font-family: var(--display);
  font-size: clamp(1.5rem, 2.6vw, 2.8rem);
  line-height: 1;
  letter-spacing: -0.04em;
}

.calculator-control input[type="range"] {
  --range-progress: 14.14%;
  width: 100%;
  height: 10px;
  margin: 32px 0 18px;
  border: 0;
  border-radius: 0;
  appearance: none;
  background: linear-gradient(
    to right,
    var(--lime) 0,
    var(--lime) var(--range-progress),
    rgba(255, 255, 255, 0.2) var(--range-progress),
    rgba(255, 255, 255, 0.2) 100%
  );
}

.calculator-control input[type="range"]::-webkit-slider-thumb {
  width: 30px;
  height: 30px;
  border: 4px solid var(--lime);
  border-radius: 50%;
  appearance: none;
  background: var(--forest-deep);
  box-shadow: 0 0 0 2px var(--forest-deep);
}

.calculator-control input[type="range"]::-moz-range-thumb {
  width: 22px;
  height: 22px;
  border: 4px solid var(--lime);
  border-radius: 50%;
  background: var(--forest-deep);
  box-shadow: 0 0 0 2px var(--forest-deep);
}

.range-labels {
  display: flex;
  justify-content: space-between;
  font: 700 0.66rem/1 var(--mono);
}

.calculator-control > p {
  max-width: 560px;
  margin-top: 28px;
  font-size: 0.75rem;
  line-height: 1.45;
  opacity: 0.72;
}

.calculator-result {
  display: flex;
  flex-direction: column;
}

.calculator-result > strong {
  margin-top: auto;
  font-family: var(--display);
  font-size: clamp(5.5rem, 9vw, 10rem);
  font-weight: 500;
  line-height: 0.76;
  letter-spacing: -0.07em;
}

.calculator-result > p {
  margin-top: 14px;
  font-size: 1.08rem;
}

.calculator-result > p b {
  font-weight: 400;
}

.calculator-result > div {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  margin-top: 28px;
  background: currentColor;
  border: 1px solid currentColor;
}

.calculator-result > div span {
  padding: 13px;
  background: var(--forest);
  color: var(--paper);
  font-family: var(--body);
  font-size: 0.73rem;
  letter-spacing: 0;
}

.calculator-result > div b {
  display: block;
  margin-bottom: 3px;
  font-family: var(--display);
  font-size: 1.25rem;
}

.focus-allocation ul {
  padding: 0;
  list-style: none;
}

.focus-allocation li {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 20px;
  padding: 17px 0;
  border-bottom: 1px solid currentColor;
}

.focus-allocation li:first-child {
  margin-top: 21px;
  border-top: 1px solid currentColor;
}

.focus-allocation li b,
.focus-allocation li output {
  font-size: 0.82rem;
  line-height: 1.3;
}

.focus-allocation li output {
  font-family: var(--mono);
}

.process-section ol {
  padding: 0;
  list-style: none;
}

.process-section li {
  display: grid;
  grid-template-columns: 70px 1fr auto;
  align-items: start;
  gap: 28px;
  padding: 32px 0;
  border-top: 1px solid var(--line);
}

.process-section li > b {
  font-family: var(--display);
  font-size: 1.35rem;
  font-weight: 500;
}

.process-section li h3 {
  margin-bottom: 8px;
  font-family: var(--display);
  font-size: 1.65rem;
  font-weight: 500;
}

.process-section li p {
  max-width: 620px;
  font-size: 0.97rem;
  line-height: 1.55;
}

.process-section li > span {
  padding-top: 5px;
  color: var(--muted);
  font: 700 0.66rem/1 var(--mono);
  letter-spacing: 0.08em;
}

.site-footer {
  display: grid;
  justify-items: start;
  gap: 28px;
  padding: var(--section-space) max(32px, calc((100vw - 1440px) / 2));
}

.site-footer h2 {
  max-width: 920px;
}

.site-footer > p {
  max-width: 680px;
  padding-top: 28px;
  border-top: 1px solid currentColor;
  font-size: 0.85rem;
  line-height: 1.6;
  opacity: 0.72;
}

/* I — Document Ledger */
.ledger-desk {
  background: var(--paper);
}

.desk-hero {
  display: grid;
  width: var(--page);
  min-height: min(780px, calc(100vh - 166px));
  grid-template-columns: minmax(0, 0.94fr) minmax(440px, 0.86fr);
  gap: clamp(48px, 7vw, 112px);
  align-items: center;
  margin: 0 auto;
  padding: clamp(70px, 9vw, 132px) 0;
}

.desk-hero .hero-copy {
  display: grid;
  gap: 30px;
}

.desk-hero .hero-copy > span {
  color: #4f6b57;
}

.desk-hero .hero-copy ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  padding: 0;
  list-style: none;
}

.desk-hero .hero-copy li {
  padding: 0 16px;
  border-left: 1px solid var(--sage);
  font-size: 0.75rem;
  font-weight: 800;
}

.desk-hero .hero-copy li:first-child {
  padding-left: 0;
  border-left: 0;
}

.desk-hero .hero-image {
  position: relative;
}

.desk-hero .hero-image::before {
  position: absolute;
  z-index: 1;
  top: -18px;
  right: -18px;
  width: 102px;
  height: 102px;
  border-top: 1px solid var(--sage);
  border-right: 1px solid var(--sage);
  content: "";
}

.desk-hero .hero-image img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  object-position: center;
  box-shadow: 28px 30px 0 var(--forest);
}

.desk-hero .hero-image figcaption {
  margin: 28px 0 0 28px;
}

.ledger-desk .capacity-calculator {
  display: grid;
  width: 100%;
  grid-template-columns: minmax(260px, 0.9fr) minmax(320px, 1.25fr) minmax(260px, 0.75fr) minmax(260px, 0.9fr);
  background: var(--forest);
  color: var(--paper);
}

.ledger-desk .capacity-calculator > div {
  min-height: 430px;
  padding: clamp(34px, 4vw, 64px);
  border-right: 1px solid rgba(237, 240, 222, 0.25);
}

.ledger-desk .capacity-calculator > div:last-child {
  border-right: 0;
}

.ledger-desk .calculator-intro {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 24px;
}

.ledger-desk .calculator-intro h2 {
  font-size: clamp(2rem, 3.1vw, 3.5rem);
}

.ledger-desk .calculator-intro .period-toggle {
  margin-top: auto;
}

.ledger-desk .calculator-control {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.ledger-desk .calculator-result {
  background: var(--lime);
  color: var(--forest-deep);
}

.ledger-desk .calculator-result > div span {
  background: var(--lime);
  color: var(--forest-deep);
}

.ledger-desk .focus-allocation {
  background: var(--forest-deep);
}

.workflow-lines,
.process-section {
  width: var(--page);
  margin: 0 auto;
  padding: var(--section-space) 0;
}

.workflow-lines header,
.process-section header {
  display: grid;
  grid-template-columns: minmax(180px, 0.34fr) minmax(0, 1fr);
  gap: 48px;
  align-items: start;
  margin-bottom: clamp(60px, 8vw, 110px);
}

.workflow-lines header > span,
.process-section header > span {
  padding-top: 10px;
  color: var(--muted);
}

.workflow-lines > div {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.workflow-lines article {
  min-height: 310px;
  padding: 28px 26px;
  border-right: 1px solid var(--line);
}

.workflow-lines article:last-child {
  border-right: 0;
}

.workflow-lines article > b {
  font-family: var(--display);
  font-size: 1.4rem;
  font-weight: 500;
}

.workflow-lines article h3 {
  margin-top: 76px;
  font-family: var(--display);
  font-size: 1.65rem;
  font-weight: 500;
  line-height: 1.08;
}

.workflow-lines article p {
  margin-top: 18px;
  font-size: 0.92rem;
  line-height: 1.55;
}

.ledger-desk .process-section {
  padding-top: 0;
}

.ledger-desk .site-footer {
  background: var(--forest-deep);
  color: var(--paper);
}

.ledger-desk .site-footer button {
  border-color: var(--lime);
  background: var(--lime);
  color: var(--forest-deep);
}

.ledger-desk .site-footer button:hover {
  background: var(--white);
}

/* II — Human Operations */
.human-ops {
  background: var(--paper-warm);
}

.human-ops .site-nav {
  border-color: rgba(19, 35, 25, 0.17);
}

.human-hero {
  display: grid;
  width: var(--page);
  min-height: min(820px, calc(100vh - 166px));
  grid-template-columns: minmax(440px, 0.9fr) minmax(0, 1.05fr);
  align-items: stretch;
  margin: 0 auto;
  padding: 42px 0 78px;
}

.human-hero figure {
  display: flex;
  flex-direction: column;
  padding: 32px 0 0 32px;
  border-left: 1px solid var(--sage);
  border-top: 1px solid var(--sage);
}

.human-hero figure img {
  width: 100%;
  flex: 1;
  min-height: 560px;
  object-fit: cover;
  object-position: center;
  filter: saturate(0.82) contrast(1.03);
}

.human-hero .hero-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 30px;
  margin: 78px 0 0 -1px;
  padding: clamp(54px, 6vw, 92px);
  background: var(--forest);
  color: var(--paper-light);
}

.human-hero .hero-copy h1 {
  font-size: clamp(3.25rem, 5.1vw, 6rem);
}

.human-hero .hero-actions button {
  border-color: var(--lime);
  background: var(--lime);
  color: var(--forest-deep);
}

.human-hero .hero-actions a {
  color: var(--paper-light);
}

.human-proof {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 22px;
  margin-top: 12px;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.25);
}

.human-proof b {
  font: 700 0.65rem/1.4 var(--mono);
  letter-spacing: 0.07em;
}

.human-proof span {
  font: 400 0.83rem/1.5 var(--body);
  letter-spacing: 0;
}

.human-calculator {
  display: grid;
  grid-template-columns: 1.1fr 1.2fr 0.7fr;
  margin-top: 64px;
  border: 1px solid var(--forest);
}

.human-calculator > div {
  min-height: 400px;
  padding: clamp(34px, 4vw, 60px);
  border-right: 1px solid var(--forest);
}

.human-calculator .calculator-intro {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 22px;
}

.human-calculator .calculator-intro h2 {
  font-size: clamp(2.2rem, 3.3vw, 3.65rem);
}

.human-calculator .period-toggle {
  margin-top: auto;
}

.human-calculator .calculator-control {
  display: flex;
  flex-direction: column;
  justify-content: center;
  background: var(--forest);
  color: var(--paper-light);
}

.human-calculator .calculator-result {
  border-right: 0;
  background: var(--lime);
  color: var(--forest-deep);
}

.human-calculator .calculator-result > strong {
  font-size: clamp(5.4rem, 8vw, 8rem);
}

.human-calculator .calculator-result > div span {
  background: var(--lime);
  color: var(--forest-deep);
}

.human-calculator .focus-allocation {
  display: grid;
  grid-column: 1 / -1;
  grid-template-columns: 1fr 2fr;
  gap: 48px;
  min-height: auto;
  border-top: 1px solid var(--forest);
  border-right: 0;
  background: var(--paper-light);
}

.human-calculator .focus-allocation > span {
  padding-top: 18px;
}

.human-calculator .focus-allocation ul {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  column-gap: 42px;
}

.human-work {
  width: var(--page);
  margin: 0 auto;
  padding: var(--section-space) 0;
}

.human-work header {
  max-width: 980px;
  margin: 0 auto clamp(58px, 8vw, 96px);
  text-align: center;
}

.human-work header > span {
  display: block;
  margin-bottom: 24px;
  color: var(--muted);
}

.before-after {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
}

.before-after > div {
  padding: clamp(34px, 5vw, 72px);
  border: 1px solid var(--forest);
}

.before-after > div + div {
  margin-left: -1px;
  background: var(--forest);
  color: var(--paper-light);
}

.before-after > div > b {
  display: block;
  margin-bottom: 42px;
  font: 700 0.68rem/1 var(--mono);
  letter-spacing: 0.08em;
}

.before-after p {
  padding: 17px 0;
  border-bottom: 1px solid currentColor;
  font-family: var(--display);
  font-size: clamp(1.2rem, 2vw, 1.7rem);
}

.human-process {
  padding-top: 0;
}

.human-footer {
  background: var(--lime);
  color: var(--forest-deep);
}

.human-footer button {
  background: var(--forest-deep);
}

/* III — Workflow System */
.flow-system {
  background: var(--paper-light);
}

.flow-hero {
  display: grid;
  width: var(--page);
  grid-template-columns: minmax(0, 0.82fr) minmax(460px, 1fr);
  margin: 0 auto;
  padding: 52px 0 78px;
}

.flow-hero .hero-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 30px;
  padding: clamp(44px, 5vw, 78px);
  background: var(--forest-deep);
  color: var(--paper-light);
}

.flow-hero .hero-copy h1 {
  font-size: clamp(3.4rem, 5.8vw, 6.5rem);
}

.flow-hero .hero-actions {
  align-items: flex-start;
  flex-direction: column;
  gap: 16px;
}

.flow-hero .hero-actions button {
  border-color: var(--lime);
  background: var(--lime);
  color: var(--forest-deep);
}

.flow-hero figure {
  display: grid;
  grid-template-rows: 1fr auto;
  padding: 24px 24px 16px;
  border: 1px solid var(--forest);
  background: var(--paper);
}

.flow-hero figure img {
  width: 100%;
  height: 100%;
  min-height: 540px;
  object-fit: cover;
}

.flow-steps {
  display: grid;
  grid-column: 1 / -1;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--forest);
  border-top: 0;
}

.flow-steps span {
  display: flex;
  min-height: 58px;
  align-items: center;
  gap: 12px;
  padding: 12px 18px;
  border-right: 1px solid var(--forest);
  font-family: var(--body);
  font-size: 0.7rem;
  letter-spacing: 0.04em;
}

.flow-steps span:last-child {
  border-right: 0;
}

.flow-steps b {
  font-family: var(--display);
  font-size: 1rem;
  font-weight: 500;
}

.flow-calculator {
  display: grid;
  grid-template-columns: minmax(260px, 0.75fr) minmax(340px, 1.2fr) minmax(300px, 0.9fr);
  margin-top: 46px;
  background: var(--lime);
  border: 1px solid var(--forest-deep);
  color: var(--forest-deep);
}

.flow-calculator > div {
  min-height: 390px;
  padding: clamp(34px, 4vw, 58px);
  border-right: 1px solid var(--forest-deep);
}

.flow-calculator .calculator-intro {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 22px;
}

.flow-calculator .calculator-intro h2 {
  font-size: clamp(2rem, 3.1vw, 3.4rem);
}

.flow-calculator .period-toggle {
  margin-top: auto;
}

.flow-calculator .period-toggle button.is-selected {
  background: var(--forest-deep);
  color: var(--lime);
}

.flow-calculator .calculator-control {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.flow-calculator .calculator-control input[type="range"] {
  background: linear-gradient(
    to right,
    var(--forest-deep) 0,
    var(--forest-deep) var(--range-progress),
    rgba(15, 47, 32, 0.2) var(--range-progress),
    rgba(15, 47, 32, 0.2) 100%
  );
}

.flow-calculator .calculator-control input[type="range"]::-webkit-slider-thumb {
  border-color: var(--forest-deep);
  background: var(--lime);
  box-shadow: 0 0 0 2px var(--lime);
}

.flow-calculator .calculator-control input[type="range"]::-moz-range-thumb {
  border-color: var(--forest-deep);
  background: var(--lime);
  box-shadow: 0 0 0 2px var(--lime);
}

.flow-calculator .calculator-result {
  border-right: 0;
  background: var(--forest-deep);
  color: var(--paper-light);
}

.flow-calculator .focus-allocation {
  display: grid;
  grid-column: 1 / -1;
  grid-template-columns: 0.55fr 1.45fr;
  gap: 52px;
  min-height: auto;
  border-top: 1px solid var(--forest-deep);
  border-right: 0;
}

.flow-calculator .focus-allocation > span {
  padding-top: 17px;
}

.flow-calculator .focus-allocation ul {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
}

.flow-calculator .focus-allocation li {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.flow-calculator .focus-allocation li output {
  font-size: 1.3rem;
}

.flow-work {
  width: var(--page);
  margin: 0 auto;
  padding: var(--section-space) 0;
}

.flow-work header {
  display: grid;
  grid-template-columns: 0.35fr 1fr;
  gap: 48px;
  margin-bottom: clamp(62px, 8vw, 106px);
}

.flow-work header > span {
  padding-top: 10px;
  color: var(--muted);
}

.flow-work .section-lede {
  max-width: 760px;
  margin: -44px 0 clamp(54px, 7vw, 88px) 35%;
  font-size: clamp(1.08rem, 1.5vw, 1.32rem);
  line-height: 1.65;
}

.flow-work .section-lede strong {
  font-weight: 700;
}

.flow-work ol {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  padding: 0;
  border-top: 1px solid var(--forest);
  border-bottom: 1px solid var(--forest);
  list-style: none;
}

.flow-work li {
  position: relative;
  min-height: 330px;
  padding: 28px 26px;
  border-right: 1px solid var(--forest);
}

.flow-work li:last-child {
  border-right: 0;
}

.flow-work li > b {
  font: 700 0.65rem/1 var(--mono);
  letter-spacing: 0.08em;
}

.flow-work li h3 {
  margin-top: 92px;
  font-family: var(--display);
  font-size: 1.8rem;
  font-weight: 500;
}

.flow-work li p {
  margin-top: 18px;
  font-size: 0.9rem;
  line-height: 1.6;
}

.flow-work li::after {
  position: absolute;
  top: 24px;
  right: 22px;
  color: var(--sage);
  content: "→";
  font-size: 1.4rem;
}

.flow-work li:last-child::after {
  content: "✓";
}

.flow-process {
  padding-top: 0;
}

.flow-footer {
  background: var(--forest);
  color: var(--paper-light);
}

.flow-footer button {
  border-color: var(--lime);
  background: var(--lime);
  color: var(--forest-deep);
}

.prototype-toast {
  position: fixed;
  z-index: 200;
  right: 24px;
  bottom: 24px;
  display: grid;
  width: min(390px, calc(100% - 48px));
  gap: 5px;
  padding: 18px 20px;
  border: 1px solid var(--lime-bright);
  background: #11110f;
  box-shadow: 0 18px 52px rgba(0, 0, 0, 0.32);
  color: #fff;
  opacity: 0;
  pointer-events: none;
  transform: translateY(16px);
  transition: opacity 180ms ease, transform 180ms ease;
}

.prototype-toast.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.prototype-toast strong {
  font-size: 0.78rem;
}

.prototype-toast span {
  color: #c6c6be;
  font-size: 0.76rem;
  line-height: 1.4;
}

.noscript-message {
  position: fixed;
  z-index: 300;
  right: 20px;
  bottom: 20px;
  max-width: 420px;
  padding: 16px;
  background: #fff;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.25);
  font-size: 0.82rem;
}

@media (max-width: 1180px) {
  :root {
    --page: min(100% - 42px, 1120px);
  }

  .concept-deck {
    grid-template-columns: auto 1fr auto;
  }

  .deck-brand span {
    display: none;
  }

  .ledger-desk .capacity-calculator {
    grid-template-columns: repeat(2, 1fr);
  }

  .ledger-desk .capacity-calculator > div {
    min-height: 360px;
    border-bottom: 1px solid rgba(237, 240, 222, 0.25);
  }

  .ledger-desk .capacity-calculator > div:nth-child(2) {
    border-right: 0;
  }

  .human-calculator {
    grid-template-columns: repeat(2, 1fr);
  }

  .human-calculator .calculator-result {
    grid-column: 1 / -1;
    min-height: 330px;
    border-top: 1px solid var(--forest);
  }

  .human-calculator .calculator-result > strong {
    margin-top: 50px;
  }

  .human-calculator .calculator-result > div {
    max-width: 420px;
  }

  .flow-calculator {
    grid-template-columns: repeat(2, 1fr);
  }

  .flow-calculator .calculator-result {
    grid-column: 1 / -1;
    min-height: 330px;
    border-top: 1px solid var(--forest-deep);
  }

  .flow-calculator .calculator-result > strong {
    margin-top: 52px;
  }
}

@media (max-width: 900px) {
  :root {
    --page: calc(100% - 32px);
    --section-space: 84px;
  }

  .concept-deck {
    min-height: 64px;
    grid-template-columns: 1fr auto;
  }

  .concept-tabs {
    justify-self: start;
    overflow-x: auto;
    max-width: 100%;
    scrollbar-width: none;
  }

  .concept-tabs::-webkit-scrollbar {
    display: none;
  }

  .deck-brand,
  .concept-deck > p {
    display: none;
  }

  .concept-tab {
    white-space: nowrap;
  }

  .site-nav {
    min-height: 84px;
  }

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

  .desk-hero,
  .human-hero,
  .flow-hero {
    grid-template-columns: 1fr;
  }

  .desk-hero {
    gap: 64px;
  }

  .desk-hero .hero-image {
    max-width: 700px;
    margin-right: 28px;
  }

  .human-hero {
    padding-top: 32px;
  }

  .human-hero figure {
    padding: 18px 0 0 18px;
  }

  .human-hero figure img {
    min-height: 520px;
  }

  .human-hero .hero-copy {
    margin: 0;
  }

  .flow-hero .hero-copy {
    order: 1;
  }

  .flow-hero figure {
    order: 2;
  }

  .flow-hero .flow-steps {
    order: 3;
    grid-template-columns: repeat(2, 1fr);
  }

  .flow-steps span:nth-child(2) {
    border-right: 0;
  }

  .flow-steps span:nth-child(-n + 2) {
    border-bottom: 1px solid var(--forest);
  }

  .workflow-lines header,
  .process-section header,
  .flow-work header {
    grid-template-columns: 1fr;
    gap: 22px;
  }

  .flow-work .section-lede {
    margin: -32px 0 58px;
  }

  .workflow-lines > div,
  .flow-work ol {
    grid-template-columns: repeat(2, 1fr);
  }

  .workflow-lines article:nth-child(2),
  .flow-work li:nth-child(2) {
    border-right: 0;
  }

  .workflow-lines article:nth-child(-n + 2),
  .flow-work li:nth-child(-n + 2) {
    border-bottom: 1px solid var(--line);
  }

  .flow-calculator .focus-allocation ul {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 700px) {
  :root {
    --page: calc(100% - 24px);
    --section-space: 70px;
  }

  .concept-deck {
    display: block;
    padding: 10px 12px;
  }

  .concept-tabs {
    width: 100%;
  }

  .concept-tab {
    min-height: 38px;
    padding-right: 11px;
    font-size: 0.61rem;
  }

  .concept-tab b {
    width: 22px;
    height: 22px;
  }

  .site-nav {
    min-height: 76px;
  }

  .site-nav button {
    display: none;
  }

  .wordmark img {
    width: 38px;
    height: 38px;
  }

  .hero-copy h1 {
    font-size: clamp(3.2rem, 14vw, 5.2rem);
  }

  .hero-actions {
    align-items: flex-start;
    flex-direction: column;
    gap: 18px;
  }

  .desk-hero {
    min-height: auto;
    padding: 64px 0 92px;
  }

  .desk-hero .hero-copy {
    gap: 25px;
  }

  .desk-hero .hero-copy ul {
    display: grid;
    gap: 8px;
  }

  .desk-hero .hero-copy li {
    padding: 0;
    border-left: 0;
  }

  .desk-hero .hero-image {
    margin-right: 18px;
  }

  .desk-hero .hero-image img {
    box-shadow: 18px 20px 0 var(--forest);
  }

  .desk-hero .hero-image figcaption {
    margin-left: 18px;
  }

  .ledger-desk .capacity-calculator,
  .human-calculator,
  .flow-calculator {
    display: block;
    width: 100%;
    margin-top: 0;
    border-right: 0;
    border-left: 0;
  }

  .ledger-desk .capacity-calculator > div,
  .human-calculator > div,
  .flow-calculator > div {
    min-height: auto;
    padding: 48px 24px;
    border-right: 0;
    border-bottom: 1px solid currentColor;
  }

  .calculator-intro h2,
  .ledger-desk .calculator-intro h2,
  .human-calculator .calculator-intro h2,
  .flow-calculator .calculator-intro h2 {
    font-size: clamp(2.35rem, 11vw, 3.5rem);
  }

  .calculator-intro .period-toggle {
    margin-top: 18px;
  }

  .calculator-control label {
    align-items: flex-start;
    flex-direction: column;
  }

  .calculator-control output {
    font-size: 2rem;
  }

  .calculator-result > strong {
    margin-top: 70px;
    font-size: clamp(6rem, 28vw, 8.5rem);
  }

  .human-calculator .calculator-result,
  .flow-calculator .calculator-result {
    min-height: auto;
    border-top: 0;
  }

  .human-calculator .calculator-result > strong,
  .flow-calculator .calculator-result > strong {
    margin-top: 70px;
  }

  .human-calculator .focus-allocation,
  .flow-calculator .focus-allocation {
    display: block;
  }

  .human-calculator .focus-allocation ul,
  .flow-calculator .focus-allocation ul {
    display: block;
  }

  .human-hero {
    width: 100%;
    padding-bottom: 0;
  }

  .human-hero figure {
    padding: 12px 12px 0;
    border: 0;
  }

  .human-hero figure img {
    min-height: 430px;
  }

  .human-hero figcaption {
    padding: 10px 4px 16px;
  }

  .human-hero .hero-copy {
    padding: 58px 24px 64px;
  }

  .human-hero .hero-copy h1,
  .flow-hero .hero-copy h1 {
    font-size: clamp(3.15rem, 13.5vw, 5.1rem);
  }

  .human-proof {
    grid-template-columns: 1fr;
  }

  .flow-hero {
    width: 100%;
    padding: 12px 0 0;
  }

  .flow-hero .hero-copy {
    padding: 58px 24px 64px;
  }

  .flow-hero figure {
    padding: 12px;
    border-right: 0;
    border-left: 0;
  }

  .flow-hero figure img {
    min-height: 390px;
  }

  .flow-hero .flow-steps {
    border-right: 0;
    border-left: 0;
  }

  .workflow-lines > div,
  .flow-work ol,
  .before-after {
    grid-template-columns: 1fr;
  }

  .workflow-lines article,
  .flow-work li {
    min-height: 250px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .workflow-lines article h3,
  .flow-work li h3 {
    margin-top: 48px;
  }

  .before-after > div + div {
    margin-top: -1px;
    margin-left: 0;
  }

  .process-section li {
    grid-template-columns: 42px 1fr;
    gap: 18px;
  }

  .process-section li > span {
    display: none;
  }

  .site-footer {
    padding-right: 24px;
    padding-left: 24px;
  }

  .prototype-toast {
    right: 12px;
    bottom: 12px;
    width: calc(100% - 24px);
  }
}

@media (max-width: 430px) {
  .concept-tab {
    flex: 0 0 auto;
  }

  .concept-tab:not(.is-active) {
    padding-right: 8px;
  }

  .concept-tab:not(.is-active) {
    font-size: 0;
  }

  .concept-tab:not(.is-active) b {
    font-size: 0.7rem;
  }

  .wordmark {
    font-size: 0.9rem;
  }

  .flow-steps span {
    padding: 10px 12px;
    font-size: 0.61rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}