@font-face {
  font-family: "Mona Sans";
  src: url("assets/mona-sans.woff2") format("woff2");
  font-style: normal;
  font-weight: 400 900;
  font-display: swap;
}

:root {
  --blue-50: #eef2fe;
  --blue-100: #dce4fd;
  --blue-200: #b9c9fb;
  --blue-300: #8ca6f5;
  --blue-500: #3962e8;
  --blue-600: #2c4fcb;
  --blue-900: #101c47;
  --emerald-50: #e7f5ec;
  --emerald-500: #3faf7a;
  --emerald-700: #0f5b41;
  --white: #ffffff;
  --neutral-50: #f4f6f8;
  --neutral-100: #f1f5f9;
  --neutral-200: #e5e7eb;
  --neutral-400: #9ca3af;
  --neutral-500: #6b7280;
  --neutral-600: #4b5564;
  --neutral-700: #374151;
  --neutral-900: #111827;
  --font-sans: "Mona Sans", Arial, sans-serif;
  --font-mono: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;
  --radius-button: 0.375rem;
  --radius-card: 0.625rem;
  --focus-ring: 0 0 0 0.1875rem rgb(57 98 232 / 26%);
  --ease-out: cubic-bezier(0.22, 0.61, 0.36, 1);
  --duration-fast: 120ms;
  --duration-base: 180ms;
  --duration-slow: 260ms;
  --shell: 80rem;
  --header-height: 4.5rem;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 1rem);
}

body {
  margin: 0;
  background: var(--neutral-50);
  color: var(--neutral-900);
  font-family: var(--font-sans);
  font-size: clamp(1rem, 0.96rem + 0.2vw, 1.125rem);
  font-weight: 400;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  -webkit-tap-highlight-color: rgb(57 98 232 / 18%);
}

body.nav-open {
  overflow: hidden;
}

a {
  color: inherit;
  touch-action: manipulation;
}

button,
input {
  font: inherit;
}

button {
  color: inherit;
  touch-action: manipulation;
}

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

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

h1,
h2,
h3 {
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.06;
  text-wrap: balance;
}

h2 {
  font-size: clamp(2.35rem, 4.2vw, 4.5rem);
}

p {
  max-width: 42.5rem;
}

.shell {
  width: min(calc(100% - clamp(2rem, 6vw, 7rem)), var(--shell));
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  inset-block-start: 0.75rem;
  inset-inline-start: 0.75rem;
  z-index: 100;
  padding: 0.65rem 1rem;
  transform: translateY(-150%);
  border-radius: var(--radius-button);
  background: var(--blue-500);
  color: var(--white);
  font-weight: 650;
  text-decoration: none;
  transition: transform var(--duration-base) var(--ease-out);
}

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

:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.site-header {
  position: sticky;
  inset-block-start: 0;
  z-index: 20;
  height: var(--header-height);
  border-block-end: 0.0625rem solid var(--neutral-200);
  background: var(--white);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 100%;
  gap: 1.5rem;
}

.brand {
  display: inline-flex;
  min-height: 2.75rem;
  align-items: center;
  border-radius: var(--radius-button);
}

.brand__crop {
  position: relative;
  display: block;
  width: 6.7rem;
  height: 1.9rem;
  overflow: hidden;
}

.brand__crop img {
  position: absolute;
  inset-block-start: -1.04rem;
  inset-inline-start: -0.74rem;
  width: 8.3rem;
  height: auto;
  max-width: none;
}

.site-header__menu {
  display: flex;
  align-items: center;
  gap: clamp(1.15rem, 2vw, 2rem);
}

.site-header__menu > a:not(.button) {
  color: var(--neutral-600);
  font-size: 0.9375rem;
  font-weight: 550;
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-out);
}

.site-header__menu > a:not(.button):hover,
.site-header__menu > a:not(.button):focus-visible {
  color: var(--blue-600);
}

.nav-toggle {
  display: none;
  min-width: 3rem;
  min-height: 2.75rem;
  align-items: center;
  gap: 0.75rem;
  border: 0;
  border-radius: var(--radius-button);
  background: transparent;
  cursor: pointer;
}

.nav-toggle__label {
  font-size: 0.875rem;
  font-weight: 650;
}

.nav-toggle__lines,
.nav-toggle__lines::before {
  display: block;
  width: 1.25rem;
  height: 0.125rem;
  background: var(--neutral-900);
  content: "";
  transition: transform var(--duration-base) var(--ease-out);
}

.nav-toggle__lines::before {
  transform: translateY(-0.38rem);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__lines {
  transform: rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__lines::before {
  transform: rotate(-90deg);
}

.button {
  display: inline-flex;
  min-height: 3rem;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  padding: 0.7rem 1.4rem;
  border: 0.0625rem solid var(--blue-500);
  border-radius: var(--radius-button);
  background: var(--blue-500);
  color: var(--white);
  font-size: 0.9375rem;
  font-weight: 650;
  line-height: 1;
  text-decoration: none;
  white-space: nowrap;
  transition: background-color var(--duration-base) var(--ease-out), border-color var(--duration-base) var(--ease-out), transform var(--duration-fast) var(--ease-out);
}

.button__icon {
  width: 1.05rem;
  height: 1.05rem;
  flex: 0 0 auto;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: transform var(--duration-fast) var(--ease-out);
}

.button:hover .button__icon,
.button:focus-visible .button__icon {
  transform: translate(0.12rem, -0.12rem);
}

.button:hover,
.button:focus-visible {
  border-color: var(--blue-600);
  background: var(--blue-600);
}

.button:active {
  transform: scale(0.98);
}

.button--small {
  min-height: 2.75rem;
  padding-inline: 1rem;
}

.button--light {
  border-color: var(--white);
  background: var(--white);
  color: var(--blue-900);
}

.button--light:hover,
.button--light:focus-visible {
  border-color: var(--blue-100);
  background: var(--blue-100);
}

.eyebrow {
  color: var(--blue-500);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  line-height: 1.4;
  text-transform: uppercase;
}

.eyebrow--on-dark {
  color: var(--blue-300);
}

.hero {
  min-height: calc(100dvh - var(--header-height));
  overflow: hidden;
  background: var(--blue-900);
  color: var(--white);
}

.hero__inner {
  display: flex;
  min-height: calc(100dvh - var(--header-height));
  flex-direction: column;
  justify-content: space-between;
  padding-block: clamp(4rem, 7vw, 6rem) clamp(2.5rem, 5vw, 4.5rem);
}

.hero__copy {
  position: relative;
  z-index: 1;
}

.hero h1 {
  max-width: none;
  margin-block-start: 1.35rem;
  font-size: clamp(3rem, 5.2vw, 5.1rem);
  font-weight: 700;
  letter-spacing: -0.045em;
}

.hero h1 span {
  display: block;
  white-space: nowrap;
}

.hero__subhead {
  max-width: 49rem;
  margin-block-start: 1.75rem;
  color: rgb(255 255 255 / 74%);
  font-size: clamp(1.05rem, 1.4vw, 1.25rem);
  line-height: 1.55;
}

.hero__action {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  margin-block-start: 2rem;
}

.hero__action p {
  color: rgb(255 255 255 / 62%);
  font-size: 0.875rem;
}

.hero__action em {
  font-style: normal;
}

.trace {
  --trace-index: 0;
  position: relative;
  margin-block-start: clamp(4rem, 8vw, 7rem);
  padding-block-start: 1.5rem;
  border-block-start: 0.0625rem solid rgb(255 255 255 / 20%);
}

.trace__track {
  position: absolute;
  inset-block-start: -0.0625rem;
  inset-inline: 0;
  height: 0.1875rem;
}

.trace__line {
  position: absolute;
  inset: 0;
  background: rgb(255 255 255 / 12%);
}

.trace__indicator {
  position: absolute;
  inset-block: 0;
  inset-inline-start: calc(var(--trace-index) * 33.333%);
  width: 33.333%;
  background: var(--blue-300);
  transition: inset-inline-start var(--duration-slow) var(--ease-out);
}

.trace__stages {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.trace__stage {
  min-height: 4.5rem;
  padding: 0;
  border: 0;
  border-radius: var(--radius-button);
  background: transparent;
  color: rgb(255 255 255 / 52%);
  cursor: pointer;
  text-align: start;
  transition: color var(--duration-base) var(--ease-out);
}

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

.trace__stage span {
  margin-block-end: 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.trace__stage strong {
  font-size: clamp(1rem, 1.4vw, 1.2rem);
  font-weight: 600;
}

.trace__stage:hover,
.trace__stage:focus-visible,
.trace__stage.is-active {
  color: var(--white);
}

.section {
  padding-block: clamp(5.5rem, 9vw, 9rem);
}

.section-heading {
  max-width: 56rem;
}

.section-heading--narrow {
  max-width: 48rem;
}

.section-heading h2 {
  margin-block-start: 0;
}

.section-heading > p:last-child {
  margin-block-start: 1.5rem;
  color: var(--neutral-600);
  line-height: 1.65;
}

.gap-layout {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(2.5rem, 5vw, 5.5rem);
}

.gap-layout .section-heading {
  grid-column: 1 / span 7;
}

.control-timing {
  grid-column: 8 / -1;
  align-self: end;
}

.control-timing figcaption {
  max-width: 30rem;
  margin-block-end: 1.5rem;
  color: var(--neutral-700);
  font-size: 1.1rem;
  font-weight: 600;
  line-height: 1.45;
}

.control-timing__visual {
  padding: clamp(1.5rem, 3vw, 2.5rem);
  border: 0.0625rem solid var(--neutral-200);
  border-block-start: 0.1875rem solid var(--blue-500);
  border-radius: var(--radius-card);
  background: var(--white);
}

.control-timing__labels {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  color: var(--neutral-500);
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.control-timing input[type="range"] {
  width: 100%;
  height: 2.75rem;
  margin-block: 0.75rem;
  appearance: none;
  background: transparent;
  cursor: pointer;
}

.control-timing input[type="range"]::-webkit-slider-runnable-track {
  height: 0.25rem;
  border-radius: 0.125rem;
  background: var(--blue-100);
}

.control-timing input[type="range"]::-moz-range-track {
  height: 0.25rem;
  border-radius: 0.125rem;
  background: var(--blue-100);
}

.control-timing input[type="range"]::-webkit-slider-thumb {
  width: 1.35rem;
  height: 1.35rem;
  margin-block-start: -0.55rem;
  appearance: none;
  border: 0.25rem solid var(--white);
  border-radius: 50%;
  background: var(--blue-500);
  box-shadow: 0 0 0 0.0625rem var(--blue-500);
}

.control-timing input[type="range"]::-moz-range-thumb {
  width: 1.1rem;
  height: 1.1rem;
  border: 0.25rem solid var(--white);
  border-radius: 50%;
  background: var(--blue-500);
  box-shadow: 0 0 0 0.0625rem var(--blue-500);
}

.control-timing__result {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  min-height: 3.5rem;
  padding-block-start: 1rem;
  border-block-start: 0.0625rem solid var(--neutral-200);
}

.control-timing__result span {
  color: var(--neutral-500);
  font-size: 0.8125rem;
}

.control-timing__result strong {
  max-width: 15rem;
  color: var(--blue-900);
  font-size: 1rem;
  text-align: end;
}

.footnote {
  grid-column: 1 / -1;
  max-width: none;
  padding-block-start: 1.25rem;
  border-block-start: 0.0625rem solid var(--neutral-200);
  color: var(--neutral-600);
  font-size: 0.875rem;
  line-height: 1.55;
}

.footnote span {
  margin-inline-end: 1rem;
  color: var(--blue-500);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.section--proof {
  background: var(--white);
}

.proof-grid {
  display: grid;
  grid-template-columns: 1.55fr 1fr;
  grid-template-rows: repeat(2, minmax(11rem, auto));
  gap: 1rem;
  margin-block-start: clamp(3rem, 6vw, 5rem);
}

.proof-grid article {
  display: flex;
  min-width: 0;
  flex-direction: column;
  justify-content: space-between;
  padding: clamp(1.5rem, 4vw, 3rem);
  border-radius: var(--radius-card);
}

.proof-grid strong,
.proof-grid span {
  display: block;
}

.proof-grid strong {
  font-size: clamp(3rem, 7vw, 7rem);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  letter-spacing: -0.055em;
  line-height: 0.9;
}

.proof-grid span {
  max-width: 17rem;
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.35;
}

.proof-grid__primary {
  grid-row: 1 / -1;
  border: 0.0625rem solid var(--blue-900);
  background: var(--blue-900);
  color: var(--white);
}

.proof-grid__secondary {
  border: 0.0625rem solid var(--neutral-200);
  background: var(--neutral-50);
  color: var(--blue-900);
}

.proof-grid__secondary strong {
  font-size: clamp(2.75rem, 5vw, 5rem);
}

.proof-grid__secondary--blue {
  border-color: var(--blue-200);
  background: var(--blue-50);
}

.section--plan {
  background: var(--neutral-50);
}

.plan {
  margin-block-start: clamp(3rem, 6vw, 5rem);
  border: 0.0625rem solid var(--neutral-200);
  border-block-start: 0.1875rem solid var(--blue-500);
  border-radius: var(--radius-card);
  background: var(--white);
  overflow: hidden;
}

.plan__tabs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-block-end: 0.0625rem solid var(--neutral-200);
}

.plan__tab {
  display: flex;
  min-height: 7.5rem;
  flex-direction: column;
  align-items: flex-start;
  justify-content: space-between;
  padding: 1.35rem;
  border: 0;
  border-inline-end: 0.0625rem solid var(--neutral-200);
  background: var(--white);
  color: var(--neutral-600);
  cursor: pointer;
  text-align: start;
  transition: background-color var(--duration-base) var(--ease-out), color var(--duration-base) var(--ease-out);
}

.plan__tab:last-child {
  border-inline-end: 0;
}

.plan__tab span {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
}

.plan__tab strong {
  font-size: clamp(1.1rem, 1.6vw, 1.4rem);
  font-weight: 650;
}

.plan__tab:hover,
.plan__tab:focus-visible {
  background: var(--blue-50);
  color: var(--blue-900);
}

.plan__tab.is-active {
  background: var(--blue-500);
  color: var(--white);
}

.plan__panels {
  min-height: 11rem;
  padding: clamp(1.75rem, 4vw, 3.5rem);
}

.plan__panel p {
  max-width: 52rem;
  color: var(--neutral-700);
  font-size: clamp(1.2rem, 2.4vw, 2rem);
  font-weight: 550;
  letter-spacing: -0.015em;
  line-height: 1.4;
}

.section--checks {
  background: var(--white);
}

.checks {
  display: flex;
  gap: 0.75rem;
  margin-block-start: clamp(3rem, 6vw, 5rem);
}

.check {
  display: flex;
  min-width: 0;
  min-height: 28rem;
  flex: 1 1 0;
  flex-direction: column;
  justify-content: space-between;
  padding: 1.35rem;
  border: 0.0625rem solid var(--neutral-200);
  border-radius: var(--radius-card);
  background: var(--neutral-50);
  overflow: hidden;
  transition: flex-grow var(--duration-slow) var(--ease-out), background-color var(--duration-base) var(--ease-out), border-color var(--duration-base) var(--ease-out);
}

.check.is-active {
  flex-grow: 2.6;
  border-color: var(--blue-500);
  background: var(--blue-500);
  color: var(--white);
}

.check button {
  display: flex;
  min-height: 4rem;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0;
  border: 0;
  border-radius: var(--radius-button);
  background: transparent;
  cursor: pointer;
  text-align: start;
}

.check button span {
  color: var(--neutral-500);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
}

.check button strong {
  font-size: clamp(1.15rem, 1.8vw, 1.6rem);
  font-weight: 650;
  line-height: 1.12;
}

.check p {
  width: min(100%, 25rem);
  color: rgb(255 255 255 / 0%);
  font-size: 1rem;
  line-height: 1.55;
  opacity: 0;
  transform: translateY(0.75rem);
  transition: color var(--duration-base) var(--ease-out), opacity var(--duration-base) var(--ease-out), transform var(--duration-base) var(--ease-out);
}

.check.is-active button span {
  color: var(--blue-100);
}

.check.is-active p {
  color: rgb(255 255 255 / 84%);
  opacity: 1;
  transform: translateY(0);
}

.section--risk {
  padding-block-end: clamp(3.25rem, 5vw, 5rem);
  background: var(--blue-900);
  color: var(--white);
}

.risk-layout {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  align-items: center;
  gap: clamp(3rem, 7vw, 7rem);
}

.section-heading--on-dark {
  grid-column: 1 / span 7;
}

.section-heading--on-dark > p:last-child {
  color: rgb(255 255 255 / 68%);
}

.evidence-trail {
  grid-column: 8 / -1;
  border-block-start: 0.0625rem solid rgb(255 255 255 / 22%);
}

.evidence-trail__item {
  padding-block: 1.5rem;
  border-block-end: 0.0625rem solid rgb(255 255 255 / 16%);
}

.evidence-trail__item span,
.evidence-trail__item strong {
  display: block;
}

.evidence-trail__item span {
  margin-block-end: 0.35rem;
  color: var(--blue-300);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.evidence-trail__item strong {
  font-size: 1.1rem;
  font-weight: 600;
}

.evidence-trail__item--faded {
  opacity: 0.66;
}

.evidence-trail__item--faint {
  opacity: 0.34;
}

.section--deliverables {
  background: var(--neutral-50);
}

.deliverables-layout {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(3rem, 7vw, 7rem);
}

.deliverables-layout .section-heading {
  grid-column: 1 / span 5;
}

.deliverables {
  grid-column: 6 / -1;
  border-block-start: 0.1875rem solid var(--blue-500);
}

.deliverables p {
  display: grid;
  max-width: none;
  grid-template-columns: 3.25rem 1fr;
  gap: 1rem;
  padding-block: 1.4rem;
  border-block-end: 0.0625rem solid var(--neutral-200);
  color: var(--blue-900);
  font-size: clamp(1.05rem, 1.7vw, 1.35rem);
  font-weight: 600;
  line-height: 1.4;
}

.deliverables span {
  color: var(--blue-500);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  line-height: 2.1;
}

.closing {
  padding-block: clamp(5rem, 9vw, 8rem);
  background: var(--blue-500);
  color: var(--white);
}

.closing__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  gap: 3rem;
}

.closing h2 {
  max-width: 53rem;
}

.closing p {
  margin-block-start: 1.5rem;
  color: rgb(255 255 255 / 80%);
  font-size: 1.05rem;
}

.site-footer {
  padding-block: 2rem;
  background: var(--white);
}

.site-footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.site-footer__inner > a:last-child {
  display: inline-flex;
  align-items: center;
  min-height: 2.75rem;
  color: var(--blue-500);
  font-size: 0.875rem;
  font-weight: 600;
  text-underline-offset: 0.2em;
}

@media (max-width: 67.5rem) {
  .site-header__menu {
    gap: 1rem;
  }

  .site-header__menu > a:not(.button) {
    font-size: 0.875rem;
  }

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

  .check,
  .check.is-active {
    min-height: 15rem;
  }

  .check:last-child {
    grid-column: 1 / -1;
  }

  .check p {
    color: var(--neutral-600);
    opacity: 1;
    transform: none;
  }

  .check.is-active p {
    color: rgb(255 255 255 / 84%);
  }
}

@media (max-width: 53rem) {
  .nav-toggle {
    display: inline-flex;
  }

  .site-header__menu {
    position: fixed;
    inset: var(--header-height) 0 auto;
    display: flex;
    max-height: calc(100dvh - var(--header-height));
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 1rem clamp(1rem, 6vw, 3rem) 2rem;
    border-block-end: 0.0625rem solid var(--neutral-200);
    background: var(--white);
    opacity: 0;
    overscroll-behavior: contain;
    pointer-events: none;
    transform: translateY(-0.75rem);
    visibility: hidden;
    transition: opacity var(--duration-base) var(--ease-out), transform var(--duration-base) var(--ease-out);
  }

  .site-header__menu.is-open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
    visibility: visible;
  }

  .site-header__menu > a:not(.button) {
    min-height: 3.25rem;
    padding-block: 0.85rem;
    border-block-end: 0.0625rem solid var(--neutral-200);
    font-size: 1rem;
  }

  .site-header__menu .button {
    margin-block-start: 1rem;
  }

  .gap-layout,
  .risk-layout,
  .deliverables-layout {
    grid-template-columns: 1fr;
  }

  .gap-layout .section-heading,
  .control-timing,
  .section-heading--on-dark,
  .evidence-trail,
  .deliverables-layout .section-heading,
  .deliverables {
    grid-column: 1;
  }

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

  .proof-grid__primary {
    grid-column: 1 / -1;
    grid-row: auto;
    min-height: 18rem;
  }

  .proof-grid__secondary {
    min-height: 12rem;
  }

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

  .plan__tab:nth-child(2) {
    border-inline-end: 0;
  }

  .plan__tab:nth-child(-n + 2) {
    border-block-end: 0.0625rem solid var(--neutral-200);
  }

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

@media (max-width: 40rem) {
  :root {
    --header-height: 4.25rem;
  }

  .shell {
    width: min(calc(100% - 2rem), var(--shell));
  }

  .brand__crop {
    width: 5.75rem;
    height: 1.65rem;
  }

  .brand__crop img {
    inset-block-start: -0.89rem;
    inset-inline-start: -0.63rem;
    width: 7.1rem;
  }

  .hero__inner {
    min-height: calc(100dvh - var(--header-height));
    padding-block: 3rem 2rem;
  }

  .hero h1 {
    font-size: clamp(2.25rem, 10vw, 3rem);
    line-height: 1;
  }

  .hero__subhead {
    margin-block-start: 1.25rem;
  }

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

  .trace {
    margin-block-start: 3.5rem;
  }

  .trace__stages {
    gap: 0.5rem;
  }

  .trace__stage {
    min-height: 3.75rem;
  }

  .trace__stage strong {
    font-size: 0.8125rem;
    line-height: 1.25;
  }

  .section {
    padding-block: 5rem;
  }

  .section-heading h2 {
    margin-block-start: 0;
  }

  .control-timing__labels {
    font-size: 0.5625rem;
    letter-spacing: 0.02em;
  }

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

  .control-timing__result strong {
    text-align: start;
  }

  .footnote span {
    display: block;
    margin: 0 0 0.45rem;
  }

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

  .proof-grid__primary,
  .proof-grid__secondary {
    grid-column: 1;
    min-height: 13rem;
  }

  .proof-grid__primary {
    min-height: 17rem;
  }

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

  .plan__tab,
  .plan__tab:nth-child(2) {
    min-height: 4.75rem;
    flex-direction: row;
    align-items: center;
    border-inline-end: 0;
    border-block-end: 0.0625rem solid var(--neutral-200);
  }

  .plan__tab:last-child {
    border-block-end: 0;
  }

  .plan__panels {
    min-height: 12rem;
  }

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

  .check,
  .check.is-active,
  .check:last-child {
    grid-column: 1;
    min-height: auto;
    padding: 1.25rem;
  }

  .check button {
    min-height: 3rem;
  }

  .check p {
    max-height: 0;
    margin-block-start: 0;
    overflow: hidden;
    opacity: 0;
    transition: max-height var(--duration-slow) var(--ease-out), margin var(--duration-base) var(--ease-out), opacity var(--duration-base) var(--ease-out);
  }

  .check.is-active p {
    max-height: 8rem;
    margin-block-start: 2rem;
    opacity: 1;
  }

  .deliverables p {
    grid-template-columns: 2.4rem 1fr;
  }

  .site-footer__inner {
    align-items: flex-start;
    flex-direction: column;
  }
}

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

  *,
  *::before,
  *::after {
    scroll-behavior: auto;
    transition-duration: 0.01ms;
  }
}

/* Visual redesign: construction evidence as the primary storytelling layer. */

h1,
h2,
h3 {
  letter-spacing: -0.018em;
}

.hero h1,
.proof-grid strong {
  letter-spacing: -0.022em;
}

.brand {
  width: 7.75rem;
  min-height: 3rem;
  overflow: visible;
}

.brand__image {
  width: 100%;
  height: auto;
  max-width: none;
  object-fit: contain;
}

.hero {
  position: relative;
  isolation: isolate;
  background: var(--blue-900);
}

.hero__backdrop,
.section-background {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  max-width: none;
  object-fit: cover;
}

.hero__backdrop {
  z-index: -2;
  object-position: center center;
  animation: hero-settle 1.2s var(--ease-out) both;
}

.hero__shade {
  position: absolute;
  inset: 0;
  z-index: -1;
  background: rgb(7 19 38 / 70%);
}

.hero__inner {
  position: relative;
  min-height: calc(100dvh - var(--header-height));
  padding-block: clamp(3.25rem, 6vw, 5.5rem) 2.25rem;
}

.hero__copy {
  max-width: 51rem;
}

.hero h1 {
  max-width: 20ch;
  font-size: clamp(3.25rem, 5.65vw, 5.65rem);
  line-height: 1.01;
  text-shadow: 0 0.0625rem 1.25rem rgb(7 19 38 / 28%);
}

.hero__subhead {
  max-width: 42rem;
  color: rgb(255 255 255 / 84%);
}

.trace {
  margin-block-start: clamp(3rem, 8vh, 6rem);
  padding: 1.25rem 1.4rem 0;
  border: 0.0625rem solid rgb(255 255 255 / 20%);
  border-radius: var(--radius-card) var(--radius-card) 0 0;
  background: rgb(7 19 38 / 72%);
  backdrop-filter: blur(0.45rem);
}

.trace__track {
  inset-block-start: 0;
}

.section {
  overflow: hidden;
}

.section-heading > p:last-child {
  max-width: 58ch;
  font-size: clamp(1rem, 1.15vw, 1.125rem);
}

.media-frame {
  position: relative;
  min-width: 0;
  margin: 0;
  overflow: hidden;
  border-radius: var(--radius-card);
  background: var(--blue-900);
}

.media-frame > img {
  width: 100%;
  height: 100%;
  max-width: none;
  object-fit: cover;
  transition: transform 700ms var(--ease-out);
}

.media-frame:hover > img {
  transform: scale(1.018);
}

.gap-layout {
  grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
  align-items: start;
  column-gap: clamp(2.5rem, 5vw, 5.5rem);
  row-gap: clamp(3rem, 5vw, 4.5rem);
}

.gap-layout .section-heading {
  grid-column: 1;
  align-self: center;
}

.gap-visual {
  grid-column: 2;
  min-width: 0;
}

.media-frame--gap {
  height: clamp(23rem, 39vw, 34rem);
}

.media-frame--gap img {
  object-position: 54% center;
}

.control-timing {
  position: relative;
  z-index: 2;
  margin: -6.5rem clamp(1rem, 3vw, 2.25rem) 0;
}

.control-timing figcaption {
  max-width: none;
  margin: 0;
  padding: 1.05rem 1.35rem;
  border-radius: var(--radius-card) var(--radius-card) 0 0;
  background: var(--blue-900);
  color: var(--white);
  font-size: 1rem;
}

.control-timing__visual {
  border-block-start: 0;
  border-radius: 0 0 var(--radius-card) var(--radius-card);
}

.proof-layout {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  align-items: center;
  gap: clamp(2rem, 4vw, 4.5rem);
}

.proof-layout .section-heading {
  grid-column: 1 / span 5;
}

.proof-media {
  grid-column: 6 / -1;
  height: clamp(22rem, 34vw, 31rem);
}

.proof-media img {
  object-position: 46% center;
}

.proof-grid {
  position: relative;
  z-index: 2;
  grid-column: 1 / -1;
  grid-template-columns: 1.35fr 1fr 1fr;
  grid-template-rows: none;
  gap: 0.75rem;
  width: calc(100% - clamp(0rem, 3vw, 3rem));
  margin: clamp(-5rem, -5vw, -3rem) 0 0 auto;
}

.proof-grid article,
.proof-grid__primary,
.proof-grid__secondary {
  grid-column: auto;
  grid-row: auto;
  min-height: 12rem;
  padding: clamp(1.3rem, 2.4vw, 2rem);
  box-shadow: 0 1.25rem 3.5rem rgb(16 28 71 / 12%);
}

.proof-grid strong,
.proof-grid__secondary strong {
  font-size: clamp(2.8rem, 5vw, 5rem);
}

.section--plan {
  background: var(--neutral-50);
}

.plan-media {
  height: clamp(22rem, 43vw, 36rem);
  margin-block-start: clamp(2.5rem, 5vw, 4.5rem);
}

.plan-media img {
  object-position: center 48%;
}

.plan {
  position: relative;
  z-index: 2;
  width: calc(100% - clamp(0rem, 6vw, 6rem));
  margin: clamp(-5.5rem, -6vw, -3.5rem) auto 0;
  box-shadow: 0 1.5rem 4rem rgb(16 28 71 / 14%);
}

.plan__tab {
  min-height: 6.75rem;
}

.checks-media {
  height: clamp(24rem, 42vw, 36rem);
  margin-block-start: clamp(2.5rem, 5vw, 4.5rem);
}

.checks-media img {
  object-position: center top;
}

.checks {
  position: relative;
  z-index: 2;
  width: calc(100% - clamp(0rem, 4vw, 4rem));
  margin: clamp(-4.5rem, -5vw, -2.5rem) auto 0;
}

.check,
.check.is-active {
  min-height: 14rem;
  background: rgb(255 255 255 / 96%);
  box-shadow: 0 1rem 2.5rem rgb(16 28 71 / 12%);
}

.check.is-active {
  background: var(--blue-500);
}

.check__icon {
  width: 1.75rem;
  height: 1.75rem;
  margin-block-end: 0.15rem;
  opacity: 0.82;
}

.check.is-active .check__icon {
  filter: brightness(0) invert(1);
  opacity: 1;
}

.section--risk,
.closing {
  position: relative;
  isolation: isolate;
}

.section--risk::before,
.closing::before {
  position: absolute;
  inset: 0;
  z-index: -1;
  background: rgb(7 19 38 / 78%);
  content: "";
}

.section--risk .section-background,
.closing .section-background {
  z-index: -2;
}

.section--risk .section-background {
  object-position: center center;
}

.risk-layout {
  min-height: clamp(26rem, 36vw, 34rem);
}

.evidence-trail {
  padding: 1.25rem;
  border: 0.0625rem solid rgb(255 255 255 / 24%);
  border-radius: var(--radius-card);
  background: rgb(7 19 38 / 68%);
  backdrop-filter: blur(0.5rem);
}

.evidence-trail__item:last-child {
  border-block-end: 0;
}

.section--deliverables {
  background: var(--white);
}

.deliverables-layout {
  grid-template-columns: repeat(12, minmax(0, 1fr));
  align-items: start;
  column-gap: clamp(2.5rem, 5vw, 5.5rem);
  row-gap: 2rem;
}

.deliverables-media {
  grid-column: 1 / span 7;
  grid-row: 1 / span 2;
  height: clamp(32rem, 46vw, 42rem);
}

.deliverables-media img {
  object-position: 62% center;
}

.deliverables-layout .section-heading {
  grid-column: 8 / -1;
  align-self: end;
}

.deliverables {
  grid-column: 8 / -1;
}

.deliverables p {
  grid-template-columns: 1.75rem 1fr;
  align-items: start;
  gap: 0.85rem;
}

.deliverables p img {
  width: 1.65rem;
  height: 1.65rem;
  margin-block-start: 0.12rem;
}

.closing {
  min-height: clamp(32rem, 56vw, 48rem);
  padding-block: clamp(5rem, 9vw, 8rem);
}

.closing::before {
  background: rgb(7 19 38 / 67%);
}

.closing .section-background {
  object-position: center center;
}

.closing__inner {
  min-height: clamp(22rem, 38vw, 35rem);
}

.closing h2 {
  max-width: 18ch;
  font-size: clamp(2.75rem, 5vw, 5rem);
  line-height: 1.02;
}

.visual-reveal {
  opacity: 0;
  transform: translateY(1.5rem);
  transition: opacity 700ms var(--ease-out), transform 700ms var(--ease-out);
}

.visual-reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes hero-settle {
  from {
    opacity: 0;
    transform: scale(1.035);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@media (max-width: 67.5rem) {
  .gap-layout,
  .proof-layout,
  .deliverables-layout {
    column-gap: 2rem;
  }

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

  .check:last-child {
    grid-column: 1 / -1;
  }
}

@media (max-width: 53rem) {
  .brand {
    width: 7rem;
  }

  .hero__backdrop {
    object-position: 62% center;
  }

  .hero__shade {
    background: rgb(7 19 38 / 74%);
  }

  .hero h1 span {
    white-space: normal;
  }

  .gap-layout,
  .proof-layout,
  .deliverables-layout {
    display: grid;
    grid-template-columns: 1fr;
  }

  .gap-layout .section-heading,
  .gap-visual,
  .proof-layout .section-heading,
  .proof-media,
  .proof-grid,
  .deliverables-media,
  .deliverables-layout .section-heading,
  .deliverables {
    grid-column: 1;
  }

  .proof-media {
    grid-row: 2;
  }

  .proof-grid {
    grid-row: 3;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    width: calc(100% - 2rem);
  }

  .proof-grid article,
  .proof-grid__primary,
  .proof-grid__secondary {
    min-height: 11rem;
  }

  .deliverables-media {
    grid-row: 2;
    height: 28rem;
  }

  .deliverables-layout .section-heading {
    grid-row: 1;
  }

  .deliverables {
    grid-row: 3;
  }

  .risk-layout {
    min-height: 36rem;
  }
}

@media (max-width: 40rem) {
  .brand {
    width: 6.7rem;
  }

  .hero__inner {
    min-height: calc(100dvh - var(--header-height));
    padding-block: 2.5rem 1rem;
  }

  .hero h1 {
    max-width: 12ch;
    font-size: clamp(2.55rem, 12vw, 3.55rem);
    line-height: 1.02;
  }

  .hero__subhead {
    margin-block-start: 1.2rem;
    font-size: 1rem;
    line-height: 1.45;
  }

  .hero__action {
    margin-block-start: 1.4rem;
  }

  .trace {
    margin-block-start: 2rem;
    padding: 0.9rem 0.9rem 0;
  }

  .trace__stage {
    min-height: 3.8rem;
  }

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

  .media-frame--gap,
  .proof-media,
  .plan-media,
  .checks-media,
  .deliverables-media {
    height: 19rem;
  }

  .control-timing {
    margin: -3.25rem 0.65rem 0;
  }

  .control-timing figcaption {
    padding: 0.9rem 1rem;
    font-size: 0.9rem;
  }

  .control-timing__visual {
    padding: 1rem;
  }

  .proof-grid {
    grid-template-columns: 1fr;
    width: calc(100% - 1.25rem);
    margin-block-start: -2.5rem;
  }

  .proof-grid article,
  .proof-grid__primary,
  .proof-grid__secondary {
    min-height: 8.75rem;
  }

  .proof-grid strong,
  .proof-grid__secondary strong {
    font-size: 3rem;
  }

  .plan {
    width: calc(100% - 1.25rem);
    margin-block-start: -2.5rem;
  }

  .checks {
    grid-template-columns: 1fr;
    width: calc(100% - 1.25rem);
    margin-block-start: -2.5rem;
  }

  .check,
  .check.is-active,
  .check:last-child {
    min-height: auto;
  }

  .check button {
    display: grid;
    grid-template-columns: 2rem 2rem 1fr;
    align-items: center;
    min-height: 3.5rem;
  }

  .check__icon {
    margin: 0;
  }

  .check button strong {
    font-size: 1.05rem;
  }

  .section--risk .section-background {
    object-position: 65% center;
  }

  .risk-layout {
    min-height: 42rem;
  }

  .closing {
    min-height: 38rem;
  }

  .closing .section-background {
    object-position: 62% center;
  }

  .closing__inner {
    min-height: 27rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .hero__backdrop {
    animation: none;
  }

  .visual-reveal,
  .visual-reveal.is-visible {
    opacity: 1;
    transform: none;
  }

  .media-frame > img,
  .media-frame:hover > img {
    transform: none;
  }
}