@import url("https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600&family=Instrument+Serif:ital@0;1&display=swap");

:root {
  --ink: #121917;
  --ink-soft: #3f4945;
  --paper: #f3f1e9;
  --paper-deep: #e9e6dc;
  --surface: #fbfaf6;
  --line: rgba(18, 25, 23, 0.16);
  --line-strong: rgba(18, 25, 23, 0.32);
  --acid: #d8ff63;
  --acid-ink: #15200b;
  --mint: #bfe7d4;
  --blue: #c6dfff;
  --amber: #f2d18d;
  --violet: #d8c6ef;
  --danger: #bf5b47;
  --radius-lg: 28px;
  --radius-md: 18px;
  --shadow: 0 26px 70px rgba(18, 25, 23, 0.13);
  --shell: min(1240px, calc(100% - 48px));
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "DM Sans", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

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

button,
input {
  font: inherit;
}

a {
  color: inherit;
}

.shell {
  width: var(--shell);
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 100;
  padding: 10px 14px;
  background: var(--acid);
  color: var(--acid-ink);
  transform: translateY(-160%);
  transition: transform 160ms ease;
}

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

:focus-visible {
  outline: 3px solid #2c6f5a;
  outline-offset: 4px;
}

.concept-banner {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  min-height: 42px;
  padding: 9px 20px;
  background: var(--ink);
  color: #f8f6ef;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.025em;
  text-align: center;
}

.concept-banner__marker {
  width: 7px;
  height: 7px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--acid);
  box-shadow: 0 0 0 4px rgba(216, 255, 99, 0.13);
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 96px;
  border-bottom: 1px solid var(--line);
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.wordmark__mark {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border: 1px solid var(--ink);
  border-radius: 50%;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: -0.04em;
}

.wordmark strong,
.wordmark small {
  display: block;
}

.wordmark strong {
  font-size: 14px;
  letter-spacing: -0.02em;
}

.wordmark small {
  margin-top: 1px;
  color: var(--ink-soft);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.header-meta {
  display: flex;
  gap: 34px;
  color: var(--ink-soft);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(340px, 0.72fr);
  gap: clamp(48px, 8vw, 118px);
  align-items: end;
  min-height: 690px;
  padding-block: 92px 80px;
}

.eyebrow-row,
.catalyst-card__topline,
.training-topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.eyebrow {
  margin: 0;
  color: var(--ink-soft);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.115em;
  text-transform: uppercase;
}

.status {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  min-height: 24px;
  padding: 4px 9px;
  border-radius: 99px;
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 0.085em;
  line-height: 1;
  text-transform: uppercase;
}

.status--fact {
  background: var(--mint);
  color: #15382d;
}

.status--interpretation {
  background: var(--blue);
  color: #193351;
}

.status--hypothesis {
  background: var(--amber);
  color: #4d3811;
}

.status--unknown {
  background: var(--violet);
  color: #372551;
}

.hero h1 {
  max-width: 760px;
  margin: 30px 0 24px;
  font-size: clamp(72px, 8.1vw, 126px);
  font-weight: 500;
  letter-spacing: -0.068em;
  line-height: 0.78;
}

.hero h1 em {
  display: block;
  color: var(--danger);
  font-family: "Instrument Serif", Georgia, serif;
  font-weight: 400;
  letter-spacing: -0.04em;
}

.hero__lede {
  max-width: 670px;
  margin: 0;
  color: var(--ink-soft);
  font-size: clamp(20px, 2vw, 26px);
  letter-spacing: -0.035em;
  line-height: 1.35;
}

.hero__brief {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
  margin-top: 70px;
  padding-top: 22px;
  border-top: 1px solid var(--line-strong);
}

.hero__brief span,
.hero__brief strong {
  display: block;
}

.hero__brief span {
  margin-bottom: 7px;
  color: var(--ink-soft);
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.hero__brief strong {
  font-size: 13px;
  font-weight: 600;
}

.catalyst-card {
  position: relative;
  overflow: hidden;
  padding: 28px;
  border-radius: var(--radius-lg);
  background: var(--ink);
  color: #f6f4ec;
  box-shadow: var(--shadow);
}

.catalyst-card::after {
  position: absolute;
  right: -76px;
  bottom: -98px;
  width: 240px;
  height: 240px;
  border: 1px solid rgba(216, 255, 99, 0.22);
  border-radius: 50%;
  box-shadow: 0 0 0 34px rgba(216, 255, 99, 0.04), 0 0 0 70px rgba(216, 255, 99, 0.025);
  content: "";
  pointer-events: none;
}

.catalyst-card__topline {
  color: #b8c0bd;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.catalyst-card__date {
  display: flex;
  align-items: flex-end;
  gap: 10px;
  margin: 56px 0 42px;
}

.catalyst-card__date span:first-child {
  color: var(--acid);
  font-family: "Instrument Serif", Georgia, serif;
  font-size: 102px;
  line-height: 0.65;
}

.catalyst-card__date span:last-child {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.12em;
  line-height: 1.25;
}

.catalyst-card h2 {
  max-width: 360px;
  margin: 0 0 14px;
  font-size: 25px;
  font-weight: 500;
  letter-spacing: -0.035em;
  line-height: 1.16;
}

.catalyst-card p {
  position: relative;
  z-index: 1;
  max-width: 350px;
  margin: 0 0 38px;
  color: #b8c0bd;
  font-size: 13px;
  line-height: 1.6;
}

.catalyst-card a {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: space-between;
  padding-top: 18px;
  border-top: 1px solid rgba(255, 255, 255, 0.18);
  color: var(--acid);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-decoration: none;
  text-transform: uppercase;
}

.logic,
.evidence,
.connection,
.response,
.sources {
  padding-block: 110px;
}

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

.section-heading {
  display: grid;
  grid-template-columns: 60px 1fr minmax(260px, 0.62fr);
  gap: 24px;
  align-items: start;
  margin-bottom: 58px;
}

.section-heading--compact {
  margin-bottom: 34px;
}

.section-index {
  display: inline-grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  color: var(--ink-soft);
  font-size: 10px;
  font-weight: 600;
}

.section-heading h2,
.connection h2,
.response h2 {
  margin: 8px 0 0;
  font-size: clamp(36px, 4vw, 56px);
  font-weight: 500;
  letter-spacing: -0.052em;
  line-height: 0.98;
}

.section-heading > p {
  max-width: 390px;
  margin: 0;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.65;
}

.logic-chain {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  margin: 0;
  padding: 0;
  list-style: none;
}

.logic-node {
  position: relative;
  min-height: 236px;
  padding: 20px 22px;
  border: 1px solid var(--line);
  border-right: 0;
  background: rgba(255, 255, 255, 0.22);
}

.logic-node:first-child {
  border-radius: var(--radius-md) 0 0 var(--radius-md);
}

.logic-node:last-child {
  border-right: 1px solid var(--line);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.logic-node:not(:last-child)::after {
  position: absolute;
  top: 50%;
  right: -6px;
  z-index: 2;
  width: 11px;
  height: 11px;
  border-top: 1px solid var(--line-strong);
  border-right: 1px solid var(--line-strong);
  background: var(--paper);
  content: "";
  transform: translateY(-50%) rotate(45deg);
}

.logic-node--interpretation {
  background: rgba(198, 223, 255, 0.22);
}

.logic-node--hypothesis {
  background: var(--ink);
  color: #f7f6ef;
}

.logic-node > div {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logic-node > div > span:first-child {
  color: var(--ink-soft);
  font-size: 10px;
}

.logic-node--hypothesis > div > span:first-child {
  color: #aab3af;
}

.logic-node > p {
  margin: 58px 0 7px;
  color: var(--ink-soft);
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.logic-node--hypothesis > p,
.logic-node--hypothesis small {
  color: #aab3af;
}

.logic-node h3 {
  margin: 0 0 9px;
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.18;
}

.logic-node small {
  display: block;
  color: var(--ink-soft);
  font-size: 11px;
  line-height: 1.45;
}

.journey-section {
  padding-block: 112px;
  background: #dfe2d9;
}

.journey-shell {
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: var(--ink);
  color: #f4f3ed;
  box-shadow: var(--shadow);
}

.journey-shell:focus-visible {
  outline-color: var(--acid);
}

.state-nav {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.state-tab {
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: 10px;
  align-items: center;
  padding: 22px;
  border: 0;
  border-right: 1px solid rgba(255, 255, 255, 0.12);
  background: transparent;
  color: #7f8b87;
  cursor: pointer;
  text-align: left;
  transition: background 180ms ease, color 180ms ease;
}

.state-tab:last-child {
  border-right: 0;
}

.state-tab:hover {
  color: #f4f3ed;
}

.state-tab[aria-current="step"] {
  background: rgba(216, 255, 99, 0.09);
  color: var(--acid);
}

.state-tab > span:first-child {
  font-size: 10px;
}

.state-tab strong,
.state-tab small {
  display: block;
}

.state-tab strong {
  font-size: 12px;
  font-weight: 600;
}

.state-tab small {
  margin-top: 2px;
  color: inherit;
  font-size: 9px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.journey-stage {
  display: grid;
  grid-template-columns: minmax(260px, 0.76fr) minmax(480px, 1.24fr);
  gap: clamp(48px, 8vw, 100px);
  align-items: center;
  min-height: 650px;
  padding: 70px clamp(32px, 6vw, 90px);
}

.journey-context {
  align-self: stretch;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.journey-context > p:first-of-type {
  margin: 36px 0 10px;
  color: var(--acid);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.journey-context h3 {
  max-width: 460px;
  margin: 0 0 22px;
  font-family: "Instrument Serif", Georgia, serif;
  font-size: clamp(44px, 4.8vw, 66px);
  font-weight: 400;
  letter-spacing: -0.035em;
  line-height: 0.98;
}

.journey-context > p:nth-of-type(2) {
  max-width: 470px;
  margin: 0;
  color: #aeb8b4;
  font-size: 14px;
  line-height: 1.7;
}

.context-note {
  margin-top: auto;
  padding-top: 22px;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
}

.context-note span {
  color: #7f8b87;
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.context-note p {
  max-width: 400px;
  margin: 7px 0 0;
  color: #d7ddd9;
  font-size: 12px;
}

.device {
  position: relative;
  overflow: hidden;
  width: min(100%, 550px);
  min-height: 500px;
  margin-left: auto;
  border: 9px solid #303936;
  border-radius: 34px;
  background: var(--surface);
  color: var(--ink);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.34);
}

.device__bar {
  display: flex;
  justify-content: space-between;
  padding: 16px 22px;
  border-bottom: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 8px;
  font-weight: 600;
  letter-spacing: 0.12em;
}

.device__bar span:last-child {
  color: var(--danger);
}

.product-state {
  min-height: 446px;
  padding: 34px;
  animation: enterState 280ms ease both;
}

.product-state[hidden] {
  display: none;
}

@keyframes enterState {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.product-state__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.product-state__header small,
.product-state__header h4,
.product-state__header span {
  display: block;
}

.product-state__header small {
  color: var(--ink-soft);
  font-size: 10px;
}

.product-state__header h4 {
  margin: 2px 0 0;
  font-size: 18px;
  font-weight: 600;
}

.product-state__header h4 span {
  display: inline-block;
  margin-left: 7px;
  padding: 3px 7px;
  border-radius: 20px;
  background: var(--paper-deep);
  color: var(--ink-soft);
  font-size: 7px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  vertical-align: middle;
}

.avatar {
  display: grid;
  width: 40px;
  height: 40px;
  place-items: center;
  border-radius: 50%;
  background: var(--ink);
  color: var(--acid);
  font-size: 10px;
  font-weight: 600;
}

.experience-card {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: #fff;
}

.experience-card__visual {
  position: relative;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  min-height: 140px;
  padding: 18px;
  background: #cdd7c7;
}

.experience-card__visual::before,
.experience-card__visual::after {
  position: absolute;
  content: "";
}

.experience-card__visual::before {
  right: 22%;
  bottom: 0;
  width: 80px;
  height: 112px;
  border-radius: 45px 45px 0 0;
  background: var(--ink);
}

.experience-card__visual::after {
  right: 29%;
  bottom: 80px;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--acid);
  box-shadow: 53px 44px 0 -8px var(--danger), -84px 72px 0 11px rgba(255, 255, 255, 0.42);
}

.experience-card__visual > span {
  z-index: 1;
  padding: 5px 8px;
  border-radius: 99px;
  background: rgba(255, 255, 255, 0.64);
  font-size: 8px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.visual-glyph {
  z-index: 1;
  display: flex;
  gap: 3px;
}

.visual-glyph i {
  display: block;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--ink);
}

.experience-card__body {
  padding: 20px;
}

.experience-card__body > small {
  color: var(--danger);
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.experience-card__body h5 {
  margin: 8px 0 3px;
  font-size: 20px;
  letter-spacing: -0.03em;
}

.experience-card__body p {
  margin: 0 0 18px;
  color: var(--ink-soft);
  font-size: 11px;
}

.concept-action {
  width: 100%;
  padding: 12px 16px;
  border: 0;
  border-radius: 99px;
  background: var(--ink);
  color: #fff;
  font-size: 10px;
  font-weight: 600;
  cursor: pointer;
}

.concept-action:hover {
  background: #27332f;
}

.concept-action--secondary {
  margin-top: 24px;
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--ink);
}

.concept-action--secondary:hover {
  background: var(--paper-deep);
}

.arrival-mark {
  position: relative;
  display: grid;
  width: 88px;
  height: 88px;
  margin: 16px auto 30px;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
}

.arrival-mark::before,
.arrival-mark::after {
  position: absolute;
  border: 1px solid var(--line);
  border-radius: 50%;
  content: "";
}

.arrival-mark::before {
  width: 112px;
  height: 112px;
}

.arrival-mark::after {
  width: 138px;
  height: 138px;
}

.arrival-mark span {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--acid);
  box-shadow: 0 0 0 10px rgba(216, 255, 99, 0.3);
}

.product-overline {
  margin: 0 0 8px;
  color: var(--danger);
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 0.09em;
  text-align: center;
  text-transform: uppercase;
}

.product-state > h4 {
  max-width: 390px;
  margin: 0 auto 12px;
  font-family: "Instrument Serif", Georgia, serif;
  font-size: 36px;
  font-weight: 400;
  letter-spacing: -0.025em;
  line-height: 1;
  text-align: center;
}

.product-copy {
  max-width: 390px;
  margin: 0 auto 24px;
  color: var(--ink-soft);
  font-size: 11px;
  line-height: 1.55;
  text-align: center;
}

.session-ticket,
.completion-row {
  display: grid;
  grid-template-columns: 1.4fr 0.55fr 1fr;
  border: 1px solid var(--line);
  border-radius: 14px;
}

.session-ticket > div,
.completion-row > div {
  padding: 14px;
  border-right: 1px solid var(--line);
}

.session-ticket > div:last-child,
.completion-row > div:last-child {
  border-right: 0;
}

.session-ticket small,
.session-ticket strong,
.completion-row small,
.completion-row strong {
  display: block;
}

.session-ticket small,
.completion-row small {
  margin-bottom: 4px;
  color: var(--ink-soft);
  font-size: 7px;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.session-ticket strong,
.completion-row strong {
  font-size: 10px;
}

.training-topline {
  margin-bottom: 30px;
  color: var(--ink-soft);
  font-size: 8px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.live-dot {
  display: flex;
  align-items: center;
  gap: 5px;
}

.live-dot::before {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--danger);
  content: "";
}

.training-ring {
  display: grid;
  width: 210px;
  height: 210px;
  margin: 0 auto 30px;
  place-items: center;
  border-radius: 50%;
  background: conic-gradient(var(--ink) 0 68%, var(--paper-deep) 68% 100%);
}

.training-ring::before {
  grid-area: 1 / 1;
  width: 172px;
  height: 172px;
  border-radius: 50%;
  background: var(--surface);
  content: "";
}

.training-ring div {
  z-index: 1;
  grid-area: 1 / 1;
  text-align: center;
}

.training-ring strong,
.training-ring small {
  display: block;
}

.training-ring strong {
  font-family: "Instrument Serif", Georgia, serif;
  font-size: 52px;
  font-weight: 400;
  line-height: 1;
}

.training-ring small {
  margin-top: 5px;
  color: var(--ink-soft);
  font-size: 8px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.metric-grid div {
  padding: 14px;
  border-right: 1px solid var(--line);
  text-align: center;
}

.metric-grid div:last-child {
  border-right: 0;
}

.metric-grid small,
.metric-grid strong {
  display: block;
}

.metric-grid small {
  color: var(--ink-soft);
  font-size: 7px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.metric-grid strong {
  margin-top: 4px;
  font-size: 17px;
}

.metric-grid strong span {
  font-size: 8px;
}

.fiction-note {
  margin: 12px 0 0;
  color: var(--ink-soft);
  font-size: 8px;
  text-align: center;
}

.completion-mark {
  display: grid;
  width: 76px;
  height: 76px;
  margin: 14px auto 24px;
  place-items: center;
  border-radius: 50%;
  background: var(--acid);
  font-family: "Instrument Serif", Georgia, serif;
  font-size: 36px;
}

.completion-row {
  grid-template-columns: 1fr 1fr;
  margin: 28px 0 18px;
}

.completion-row > div {
  padding: 16px 18px;
}

.next-action {
  padding: 18px;
  border-radius: 14px;
  background: var(--ink);
  color: #f6f5ef;
}

.next-action > small {
  display: block;
  margin-bottom: 12px;
  color: #9da8a4;
  font-size: 7px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.next-action > div {
  display: flex;
  align-items: center;
  gap: 14px;
}

.next-action > div > span {
  display: grid;
  width: 34px;
  height: 34px;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 50%;
  background: var(--acid);
  color: var(--ink);
}

.next-action p {
  margin: 0;
  color: #aeb8b4;
  font-size: 9px;
}

.next-action strong {
  color: #fff;
  font-size: 11px;
}

.action-feedback {
  position: absolute;
  right: 24px;
  bottom: 17px;
  left: 24px;
  margin: 0;
  color: var(--danger);
  font-size: 9px;
  font-weight: 600;
  text-align: center;
}

.journey-controls {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 22px;
  align-items: center;
  padding: 20px 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.progress-track {
  height: 2px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.15);
}

.progress-track span {
  display: block;
  width: 25%;
  height: 100%;
  background: var(--acid);
  transition: width 220ms ease;
}

#state-count {
  color: #8d9894;
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 0.08em;
}

.journey-controls > div:last-child {
  display: flex;
  gap: 8px;
}

.icon-button {
  display: grid;
  width: 40px;
  height: 40px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 50%;
  background: transparent;
  color: #fff;
  cursor: pointer;
}

.icon-button:hover:not(:disabled) {
  border-color: var(--acid);
  color: var(--acid);
}

.icon-button:disabled {
  cursor: not-allowed;
  opacity: 0.25;
}

.evidence-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.evidence-card {
  min-height: 440px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
}

.evidence-card--known {
  background: rgba(191, 231, 212, 0.45);
}

.evidence-card--suggests {
  background: rgba(198, 223, 255, 0.45);
}

.evidence-card--unknown {
  background: rgba(216, 198, 239, 0.42);
}

.evidence-card h3 {
  margin: 46px 0 24px;
  font-family: "Instrument Serif", Georgia, serif;
  font-size: 36px;
  font-weight: 400;
  letter-spacing: -0.03em;
}

.evidence-card ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.evidence-card li {
  position: relative;
  padding: 14px 0 14px 22px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  line-height: 1.55;
}

.evidence-card li::before {
  position: absolute;
  top: 21px;
  left: 1px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  content: "";
  opacity: 0.42;
}

.connection {
  display: grid;
  grid-template-columns: 1.1fr 1fr 0.7fr;
  gap: 58px;
  align-items: center;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.connection__intro .section-index {
  margin-bottom: 52px;
}

.connection__intro h2 {
  max-width: 520px;
}

.connection__proof {
  display: grid;
  grid-template-columns: 86px 1fr;
  gap: 22px;
  align-items: start;
  padding: 28px;
  border-radius: var(--radius-md);
  background: var(--ink);
  color: #f6f4ed;
}

.hydrow-mark {
  display: grid;
  width: 86px;
  height: 126px;
  place-items: center;
  border-radius: 80px 80px 18px 18px;
  background: var(--acid);
  color: var(--ink);
  font-family: "Instrument Serif", Georgia, serif;
  font-size: 48px;
}

.connection__proof h3 {
  margin: 34px 0 8px;
  font-size: 22px;
}

.connection__proof p,
.connection__logic p {
  margin: 0;
  color: #aeb8b4;
  font-size: 12px;
  line-height: 1.6;
}

.connection__logic p {
  margin-top: 18px;
  color: var(--ink-soft);
}

.response {
  display: grid;
  grid-template-columns: 1.5fr 0.5fr;
  gap: 100px;
  align-items: end;
}

.response .section-index {
  margin-bottom: 48px;
}

.response h2 {
  max-width: 900px;
}

.response aside {
  padding-top: 22px;
  border-top: 1px solid var(--line-strong);
}

.response aside p {
  margin: 18px 0 0;
  color: var(--ink-soft);
  font-size: 13px;
  line-height: 1.65;
}

.sources {
  padding-top: 0;
}

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

.sources summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 34px 0;
  cursor: pointer;
  list-style: none;
}

.sources summary::-webkit-details-marker {
  display: none;
}

.sources summary > span:first-child {
  display: flex;
  align-items: center;
  gap: 24px;
}

.sources summary strong {
  display: block;
  margin-top: 4px;
  font-size: 20px;
}

.summary-action {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--ink-soft);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.summary-action i {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  font-size: 18px;
  font-style: normal;
  transition: transform 180ms ease;
}

details[open] .summary-action i {
  transform: rotate(45deg);
}

.source-list {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  border-top: 1px solid var(--line);
}

.source-list article {
  min-height: 260px;
  padding: 26px 20px 24px 0;
  border-right: 1px solid var(--line);
}

.source-list article:not(:first-child) {
  padding-left: 20px;
}

.source-list article:last-child {
  border-right: 0;
}

.source-list h3 {
  margin: 46px 0 7px;
  font-size: 15px;
  letter-spacing: -0.02em;
  line-height: 1.25;
}

.source-list p {
  min-height: 44px;
  margin: 0 0 28px;
  color: var(--ink-soft);
  font-size: 10px;
  line-height: 1.45;
}

.source-list a {
  display: flex;
  justify-content: space-between;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-decoration: none;
  text-transform: uppercase;
}

.source-list a:hover {
  color: var(--danger);
}

.site-footer {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 46px;
  align-items: center;
  min-height: 150px;
  border-top: 1px solid var(--line);
}

.site-footer p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 9px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.noscript-note {
  position: fixed;
  right: 16px;
  bottom: 16px;
  left: 16px;
  z-index: 100;
  padding: 14px;
  border-radius: 10px;
  background: #5d281e;
  color: #fff;
  font-size: 12px;
  text-align: center;
}

@media (max-width: 1060px) {
  .hero {
    grid-template-columns: 1fr 340px;
    gap: 46px;
  }

  .hero h1 {
    font-size: clamp(62px, 9.2vw, 94px);
  }

  .logic-chain {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }

  .logic-node,
  .logic-node:first-child,
  .logic-node:last-child {
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
  }

  .logic-node:not(:last-child)::after {
    display: none;
  }

  .logic-node:last-child {
    grid-column: 1 / -1;
    min-height: 190px;
  }

  .journey-stage {
    grid-template-columns: 0.8fr 1.2fr;
    gap: 40px;
    padding-inline: 38px;
  }

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

  .connection__logic {
    grid-column: 2;
  }

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

  .source-list article,
  .source-list article:not(:first-child) {
    min-height: 220px;
    padding: 24px;
    border-bottom: 1px solid var(--line);
  }
}

@media (max-width: 760px) {
  :root {
    --shell: min(100% - 28px, 620px);
    --radius-lg: 20px;
  }

  .concept-banner {
    align-items: flex-start;
    min-height: 48px;
    padding-inline: 14px;
    font-size: 10px;
    text-align: left;
  }

  .concept-banner__marker {
    margin-top: 4px;
  }

  .site-header {
    min-height: 78px;
  }

  .header-meta span:last-child {
    display: none;
  }

  .hero {
    display: block;
    min-height: auto;
    padding-block: 70px 60px;
  }

  .hero h1 {
    margin-top: 28px;
    font-size: clamp(58px, 19vw, 88px);
  }

  .hero__lede {
    font-size: 19px;
  }

  .hero__brief {
    grid-template-columns: 1fr;
    gap: 17px;
    margin-top: 44px;
  }

  .catalyst-card {
    margin-top: 42px;
  }

  .catalyst-card__date {
    margin-block: 44px 35px;
  }

  .logic,
  .evidence,
  .connection,
  .response,
  .sources {
    padding-block: 76px;
  }

  .section-heading {
    grid-template-columns: 44px 1fr;
    gap: 16px;
    margin-bottom: 36px;
  }

  .section-heading > p {
    grid-column: 2;
  }

  .section-heading h2,
  .connection h2,
  .response h2 {
    font-size: 38px;
  }

  .logic-chain {
    grid-template-columns: 1fr;
  }

  .logic-node:last-child {
    grid-column: auto;
  }

  .logic-node {
    min-height: 182px;
  }

  .logic-node > p {
    margin-top: 34px;
  }

  .journey-section {
    padding-block: 76px;
  }

  .state-nav {
    grid-template-columns: repeat(4, 1fr);
  }

  .state-tab {
    display: block;
    padding: 15px 10px;
    text-align: center;
  }

  .state-tab > span:first-child {
    display: block;
    margin-bottom: 4px;
  }

  .state-tab small {
    display: none;
  }

  .journey-stage {
    display: block;
    min-height: auto;
    padding: 42px 18px 26px;
  }

  .journey-context {
    min-height: 390px;
    padding: 4px 8px 34px;
  }

  .journey-context h3 {
    font-size: 46px;
  }

  .context-note {
    margin-top: 50px;
  }

  .device {
    min-height: 500px;
    margin: 0;
    border-width: 6px;
    border-radius: 26px;
  }

  .product-state {
    padding: 25px 20px;
  }

  .session-ticket {
    grid-template-columns: 1fr 0.6fr;
  }

  .session-ticket > div:last-child {
    grid-column: 1 / -1;
    border-top: 1px solid var(--line);
  }

  .training-ring {
    width: 190px;
    height: 190px;
  }

  .training-ring::before {
    width: 154px;
    height: 154px;
  }

  .journey-controls {
    grid-template-columns: 1fr auto;
  }

  .journey-controls > div:last-child {
    grid-column: 1 / -1;
    justify-content: flex-end;
  }

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

  .evidence-card {
    min-height: auto;
  }

  .connection,
  .response {
    grid-template-columns: 1fr;
    gap: 42px;
  }

  .connection__logic {
    grid-column: auto;
  }

  .connection__intro .section-index,
  .response .section-index {
    margin-bottom: 32px;
  }

  .connection__proof {
    grid-template-columns: 64px 1fr;
    padding: 20px;
  }

  .hydrow-mark {
    width: 64px;
    height: 96px;
    font-size: 36px;
  }

  .connection__proof h3 {
    margin-top: 22px;
  }

  .source-list {
    grid-template-columns: 1fr;
  }

  .source-list article,
  .source-list article:not(:first-child) {
    min-height: auto;
    padding: 24px 0;
    border-right: 0;
  }

  .source-list h3 {
    margin-top: 26px;
  }

  .source-list p {
    min-height: auto;
  }

  .summary-action {
    font-size: 0;
  }

  .site-footer {
    grid-template-columns: 1fr;
    gap: 18px;
    padding-block: 34px;
  }
}

@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 print {
  .concept-banner {
    position: static;
  }

  .journey-shell {
    box-shadow: none;
  }

  .journey-controls,
  .state-nav {
    display: none;
  }
}