:root {
  --red: #e1272f;
  --red-bright: #ff3440;
  --ink: #090a0c;
  --ink-2: #111318;
  --steel: #20242b;
  --paper: #f2f0ea;
  --paper-2: #e6e3dc;
  --white: #ffffff;
  --muted: #9ca0a7;
  --line-dark: rgba(255, 255, 255, 0.14);
  --line-light: rgba(8, 10, 12, 0.16);
  --display: "Barlow Condensed", "Arial Narrow", sans-serif;
  --body: "Barlow", Arial, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
  --rail-width: 264px;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 32px;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--ink);
  font-family: var(--body);
  font-size: 17px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body.menu-open {
  overflow: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

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

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

button:focus-visible,
a:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--red-bright);
  outline-offset: 4px;
}

::selection {
  color: var(--white);
  background: var(--red);
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 1000;
  padding: 10px 14px;
  color: var(--white);
  background: var(--red);
  font-family: var(--mono);
  font-size: 12px;
  transform: translateY(-160%);
}

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

.page-progress {
  position: fixed;
  top: 0;
  right: 0;
  left: var(--rail-width);
  z-index: 200;
  height: 3px;
  background: rgba(255, 255, 255, 0.08);
}

.page-progress span {
  display: block;
  width: 0;
  height: 100%;
  background: var(--red-bright);
  box-shadow: 0 0 14px rgba(255, 52, 64, 0.8);
}

.mobile-header {
  display: none;
}

.rail {
  position: fixed;
  inset: 0 auto 0 0;
  z-index: 100;
  display: flex;
  width: var(--rail-width);
  padding: 26px 23px 22px;
  overflow: hidden;
  color: var(--white);
  background: #090a0c;
  border-right: 1px solid rgba(255, 255, 255, 0.13);
  flex-direction: column;
}

.rail::after {
  position: absolute;
  inset: 0;
  z-index: -1;
  content: "";
  background:
    linear-gradient(155deg, rgba(225, 39, 47, 0.18), transparent 32%),
    radial-gradient(circle at -20% 110%, rgba(225, 39, 47, 0.24), transparent 42%);
  pointer-events: none;
}

.rail-carbon {
  position: absolute;
  inset: 0;
  z-index: -2;
  background-color: #090a0c;
  background-image:
    linear-gradient(45deg, rgba(255, 255, 255, 0.025) 25%, transparent 25%, transparent 75%, rgba(255, 255, 255, 0.025) 75%),
    linear-gradient(45deg, rgba(255, 255, 255, 0.025) 25%, transparent 25%, transparent 75%, rgba(255, 255, 255, 0.025) 75%);
  background-position: 0 0, 4px 4px;
  background-size: 8px 8px;
}

.rail-brand {
  display: block;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line-dark);
}

.rail-brand img {
  width: 108px;
  height: auto;
}

.rail-brand span {
  display: block;
  margin-top: 8px;
  color: rgba(255, 255, 255, 0.52);
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.rail-meta {
  display: flex;
  margin: 17px 0 19px;
  color: rgba(255, 255, 255, 0.44);
  font-family: var(--mono);
  font-size: 8px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  justify-content: space-between;
}

.rail nav {
  display: grid;
  gap: 3px;
}

.nav-link {
  position: relative;
  display: grid;
  min-height: 40px;
  padding: 10px 10px 10px 13px;
  color: rgba(255, 255, 255, 0.46);
  background: transparent;
  border: 1px solid transparent;
  grid-template-columns: 28px 1fr;
  align-items: center;
  transition: color 250ms ease, background 250ms ease, border-color 250ms ease, transform 250ms var(--ease-out);
}

.nav-link::before {
  position: absolute;
  top: 9px;
  bottom: 9px;
  left: -1px;
  width: 2px;
  content: "";
  background: var(--red-bright);
  transform: scaleY(0);
  transform-origin: center;
  transition: transform 250ms var(--ease-out);
}

.nav-link:hover {
  color: var(--white);
  transform: translateX(2px);
}

.nav-link.is-active {
  color: var(--white);
  background: rgba(255, 255, 255, 0.07);
  border-color: rgba(255, 255, 255, 0.09);
}

.nav-link.is-active::before {
  transform: scaleY(1);
}

.nav-link span {
  color: var(--red-bright);
  font-family: var(--mono);
  font-size: 9px;
}

.nav-link strong {
  font-family: var(--display);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.07em;
  line-height: 1;
  text-transform: uppercase;
}

.rail-mock-link {
  display: flex;
  margin-top: auto;
  padding: 13px 0;
  color: rgba(255, 255, 255, 0.8);
  border-top: 1px solid var(--line-dark);
  border-bottom: 1px solid var(--line-dark);
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  justify-content: space-between;
  transition: color 200ms ease;
}

.rail-mock-link:hover {
  color: var(--red-bright);
}

.rail-status {
  display: grid;
  margin-top: 18px;
  color: rgba(255, 255, 255, 0.43);
  font-family: var(--mono);
  font-size: 8px;
  letter-spacing: 0.08em;
  grid-template-columns: 12px 1fr;
  text-transform: uppercase;
  align-items: center;
}

.rail-status strong {
  margin-top: 3px;
  color: var(--white);
  font-size: 10px;
  grid-column: 2;
}

.status-light {
  width: 6px;
  height: 6px;
  background: var(--red-bright);
  border-radius: 50%;
  box-shadow: 0 0 0 0 rgba(255, 52, 64, 0.65);
  animation: status-pulse 2.2s infinite;
}

main {
  margin-left: var(--rail-width);
  overflow: hidden;
}

.hero {
  position: relative;
  display: flex;
  min-height: 100vh;
  padding: 76px clamp(38px, 7vw, 116px) 50px;
  overflow: hidden;
  color: var(--white);
  background: #090a0c;
  align-items: center;
}

.hero-image {
  position: absolute;
  inset: -5%;
  z-index: 0;
  background-image:
    linear-gradient(90deg, rgba(7, 8, 10, 0.98) 0%, rgba(7, 8, 10, 0.86) 34%, rgba(7, 8, 10, 0.25) 73%, rgba(7, 8, 10, 0.45) 100%),
    linear-gradient(0deg, rgba(7, 8, 10, 0.9) 0%, transparent 45%),
    url("/images/hero-pro-r.jpg");
  background-position: center, center, center;
  background-size: cover;
  transform: scale(1.05);
  will-change: transform;
}

.hero-grid,
.cta-grid {
  position: absolute;
  inset: 0;
  z-index: 1;
  opacity: 0.32;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px);
  background-position: center;
  background-size: 84px 84px;
  mask-image: linear-gradient(90deg, #000, transparent 72%);
}

.hero::before {
  position: absolute;
  inset: 0;
  z-index: 2;
  content: "";
  background: radial-gradient(circle at 67% 48%, transparent 0 15%, rgba(8, 9, 11, 0.13) 49%, rgba(8, 9, 11, 0.76) 100%);
  pointer-events: none;
}

.hero::after {
  position: absolute;
  top: 0;
  left: 56%;
  z-index: 2;
  width: 12px;
  height: 100%;
  content: "";
  background: linear-gradient(180deg, transparent 6%, var(--red) 31%, transparent 74%);
  opacity: 0.8;
  transform: skewX(-16deg);
  transform-origin: top;
}

.hero-speedline {
  position: absolute;
  right: -14%;
  bottom: 18%;
  z-index: 3;
  width: 70%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.72), transparent);
  transform: rotate(-7deg);
  animation: speed-line 5s ease-in-out infinite;
}

.hero-content {
  position: relative;
  z-index: 4;
  width: min(760px, 68%);
  padding-bottom: 80px;
}

.hero-kicker {
  display: flex;
  margin-bottom: 26px;
  color: rgba(255, 255, 255, 0.62);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  align-items: center;
  gap: 26px;
}

.live-marker {
  display: inline-flex;
  color: var(--white);
  align-items: center;
  gap: 8px;
}

.live-marker i {
  width: 6px;
  height: 6px;
  background: var(--red-bright);
  border-radius: 50%;
  box-shadow: 0 0 14px rgba(255, 52, 64, 0.9);
}

.hero h1,
.section-heading h2,
.cta-copy h2 {
  margin: 0;
  font-family: var(--display);
  font-weight: 900;
  letter-spacing: -0.045em;
  line-height: 0.83;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 820px;
  font-size: clamp(74px, 9.4vw, 156px);
}

.hero h1 span {
  display: block;
}

.hero h1 .accent-line {
  position: relative;
  display: inline-block;
  color: var(--red-bright);
  font-style: italic;
}

.hero h1 .accent-line::after {
  position: absolute;
  right: -130px;
  bottom: 0.18em;
  width: 110px;
  height: 5px;
  content: "";
  background: var(--red-bright);
  transform: skewX(-24deg);
  transform-origin: left;
  animation: rule-grow 1.3s 300ms var(--ease-out) both;
}

.hero-summary {
  max-width: 680px;
  margin: 31px 0 0;
  color: rgba(255, 255, 255, 0.78);
  font-size: clamp(17px, 1.35vw, 21px);
  line-height: 1.55;
}

.hero-actions,
.cta-actions {
  display: flex;
  margin-top: 32px;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  position: relative;
  display: inline-flex;
  min-height: 52px;
  padding: 0 20px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.28);
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  transition: color 250ms ease, border-color 250ms ease, transform 250ms var(--ease-out);
}

.button::before {
  position: absolute;
  inset: 0;
  z-index: -1;
  content: "";
  background: var(--white);
  transform: translateX(-104%);
  transition: transform 350ms var(--ease-out);
}

.button:hover {
  color: var(--ink);
  border-color: var(--white);
  transform: translateY(-2px);
}

.button:hover::before {
  transform: translateX(0);
}

.button-primary {
  color: var(--white);
  background: var(--red);
  border-color: var(--red);
}

.button-primary::before {
  background: var(--white);
}

.button b {
  font-size: 17px;
  line-height: 1;
}

.hero-specs {
  position: absolute;
  right: clamp(34px, 5vw, 82px);
  bottom: 42px;
  z-index: 4;
  display: grid;
  min-width: 500px;
  color: var(--white);
  background: rgba(8, 9, 11, 0.78);
  border: 1px solid rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(15px);
  grid-template-columns: repeat(4, 1fr);
}

.hero-specs div {
  padding: 14px 17px;
  border-right: 1px solid var(--line-dark);
}

.hero-specs div:last-child {
  border-right: 0;
}

.hero-specs span,
.hero-specs strong {
  display: block;
  white-space: nowrap;
}

.hero-specs span {
  color: rgba(255, 255, 255, 0.43);
  font-family: var(--mono);
  font-size: 7px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-specs strong {
  margin-top: 4px;
  font-family: var(--display);
  font-size: 14px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.scroll-cue {
  position: absolute;
  bottom: 40px;
  left: clamp(38px, 7vw, 116px);
  z-index: 4;
  display: flex;
  color: rgba(255, 255, 255, 0.48);
  font-family: var(--mono);
  font-size: 8px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  align-items: center;
  gap: 12px;
}

.scroll-cue i {
  display: block;
  width: 42px;
  height: 1px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.25);
}

.scroll-cue i::after {
  display: block;
  width: 50%;
  height: 100%;
  content: "";
  background: var(--red-bright);
  animation: scroll-line 1.8s ease-in-out infinite;
}

.section {
  position: relative;
  padding: 126px clamp(38px, 7vw, 116px);
}

.section-inner {
  position: relative;
  z-index: 2;
  max-width: 1180px;
  margin: 0 auto;
}

.section-light {
  color: var(--ink);
  background:
    linear-gradient(90deg, transparent 0 74%, rgba(8, 10, 12, 0.035) 74% 74.12%, transparent 74.12%),
    var(--paper);
}

.section-light::after {
  position: absolute;
  inset: 0;
  z-index: 0;
  content: "";
  opacity: 0.35;
  background-image: radial-gradient(rgba(8, 10, 12, 0.12) 0.7px, transparent 0.7px);
  background-size: 5px 5px;
  mask-image: linear-gradient(90deg, transparent, #000 70%, transparent);
  pointer-events: none;
}

.section-dark,
.section-track {
  color: var(--white);
  background: var(--ink-2);
}

.section-dark::before,
.section-track::before {
  position: absolute;
  inset: 0;
  content: "";
  opacity: 0.52;
  background-image:
    linear-gradient(45deg, rgba(255, 255, 255, 0.02) 25%, transparent 25%, transparent 75%, rgba(255, 255, 255, 0.02) 75%),
    linear-gradient(45deg, rgba(255, 255, 255, 0.02) 25%, transparent 25%, transparent 75%, rgba(255, 255, 255, 0.02) 75%);
  background-position: 0 0, 5px 5px;
  background-size: 10px 10px;
  pointer-events: none;
}

.section-heading {
  display: grid;
  margin-bottom: 64px;
  grid-template-columns: 1fr minmax(280px, 420px);
  gap: 44px 70px;
  align-items: end;
}

.section-heading .eyebrow {
  grid-column: 1 / -1;
  margin-bottom: -13px;
}

.eyebrow,
.panel-label,
.metric-label {
  margin: 0;
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.eyebrow {
  color: rgba(8, 10, 12, 0.47);
}

.section-dark .eyebrow,
.section-track .eyebrow,
.section-aftermarket .eyebrow,
.section-cta .eyebrow {
  color: rgba(255, 255, 255, 0.48);
}

.eyebrow span {
  display: inline-flex;
  width: 30px;
  color: var(--red);
}

.section-heading h2,
.cta-copy h2 {
  font-size: clamp(58px, 6.2vw, 104px);
}

.section-heading .lede {
  margin: 0;
  color: rgba(8, 10, 12, 0.65);
  font-size: 19px;
  line-height: 1.65;
}

.section-dark .section-heading .lede,
.section-track .section-heading .lede,
.section-aftermarket .section-heading .lede {
  color: rgba(255, 255, 255, 0.64);
}

.metric-grid {
  display: grid;
  margin-bottom: 28px;
  border: 1px solid var(--line-light);
  grid-template-columns: repeat(4, 1fr);
}

.metric-card {
  position: relative;
  min-height: 230px;
  padding: 28px 25px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.2);
  border-right: 1px solid var(--line-light);
}

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

.metric-card::after {
  position: absolute;
  right: -26px;
  bottom: -34px;
  width: 100px;
  height: 100px;
  content: "";
  border: 1px solid currentColor;
  opacity: 0.12;
  transform: rotate(45deg);
}

.metric-card-dark {
  color: var(--white);
  background: var(--ink);
}

.metric-card-red {
  color: var(--white);
  background: var(--red);
}

.metric-card .metric-label {
  display: block;
  color: inherit;
  opacity: 0.55;
}

.metric-card strong {
  display: block;
  margin: 38px 0 10px;
  font-family: var(--display);
  font-size: clamp(54px, 5vw, 82px);
  font-weight: 800;
  letter-spacing: -0.05em;
  line-height: 0.8;
}

.metric-card p {
  max-width: 150px;
  margin: 0;
  font-size: 13px;
  line-height: 1.4;
  opacity: 0.65;
}

.signal-panel {
  display: grid;
  margin-top: 28px;
  padding: 42px;
  color: var(--white);
  background: var(--ink);
  grid-template-columns: 96px 1fr;
  align-items: center;
}

.signal-mark {
  color: var(--red);
  font-family: var(--display);
  font-size: 70px;
  font-weight: 900;
  line-height: 1;
}

.signal-panel .panel-label {
  color: rgba(255, 255, 255, 0.45);
}

.signal-panel blockquote {
  max-width: 860px;
  margin: 12px 0 0;
  font-family: var(--display);
  font-size: clamp(27px, 3vw, 45px);
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.1;
  text-transform: uppercase;
}

.vehicle-band {
  display: grid;
  margin-top: 28px;
  padding: 28px 0 0;
  border-top: 1px solid var(--line-light);
  grid-template-columns: 180px 1fr auto;
  gap: 24px;
  align-items: start;
}

.vehicle-band .panel-label {
  color: rgba(8, 10, 12, 0.46);
}

.vehicle-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.vehicle-list span,
.brand-cloud span {
  display: inline-flex;
  min-height: 34px;
  padding: 7px 12px;
  border: 1px solid var(--line-light);
  font-family: var(--display);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  align-items: center;
}

.vehicle-band > p {
  margin: 8px 0 0;
  color: rgba(8, 10, 12, 0.5);
  font-family: var(--mono);
  font-size: 9px;
  white-space: nowrap;
  text-transform: uppercase;
}

.system-stack {
  display: grid;
  border: 1px solid var(--line-dark);
  grid-template-columns: repeat(2, 1fr);
}

.system-card {
  position: relative;
  min-height: 500px;
  padding: 32px 29px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.025);
  border-right: 1px solid var(--line-dark);
}

.system-card:last-child {
  border-right: 0;
}

.system-card-featured {
  background: linear-gradient(160deg, rgba(225, 39, 47, 0.22), rgba(255, 255, 255, 0.02) 54%);
}

.system-number {
  position: absolute;
  top: 13px;
  right: 22px;
  color: rgba(255, 255, 255, 0.055);
  font-family: var(--display);
  font-size: 154px;
  font-weight: 900;
  line-height: 1;
}

.system-card .panel-label {
  position: relative;
  color: var(--red-bright);
}

.system-card h3,
.ownership-panel h3,
.exception-grid h3,
.discovery-card h3,
.track-card h3,
.qa-strip h3,
.costs-heading h3,
.aftermarket-grid h3,
.boundary-card h3,
.principle-grid h3 {
  margin: 68px 0 18px;
  font-family: var(--display);
  font-size: clamp(34px, 3vw, 48px);
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 0.98;
  text-transform: uppercase;
}

.system-card p {
  color: rgba(255, 255, 255, 0.67);
}

.compact-list,
.track-card ul,
.qa-strip ul,
.boundary-card ul,
.coverage-note ul {
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.compact-list li {
  position: relative;
  padding: 12px 0 12px 20px;
  color: rgba(255, 255, 255, 0.76);
  border-top: 1px solid var(--line-dark);
  font-size: 13px;
}

.compact-list li::before,
.track-card li::before,
.qa-strip li::before,
.coverage-note li::before {
  position: absolute;
  left: 1px;
  content: "/";
  color: var(--red-bright);
  font-family: var(--mono);
  font-size: 11px;
}

.data-flow {
  display: grid;
  margin: 30px 0;
  padding: 28px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--line-dark);
  grid-template-columns: 1fr 30px 1fr 30px 1fr;
  align-items: center;
}

.data-flow > i {
  color: var(--red-bright);
  font-family: var(--mono);
  font-size: 18px;
  font-style: normal;
  text-align: center;
}

.flow-node {
  display: grid;
  grid-template-columns: 38px 1fr;
}

.flow-node span {
  color: var(--red-bright);
  font-family: var(--mono);
  font-size: 9px;
  grid-row: 1 / 3;
}

.flow-node strong {
  font-family: var(--display);
  font-size: 19px;
  letter-spacing: 0.04em;
  line-height: 1;
  text-transform: uppercase;
}

.flow-node small {
  margin-top: 7px;
  color: rgba(255, 255, 255, 0.46);
  font-family: var(--mono);
  font-size: 8px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.ownership-panel {
  display: grid;
  margin: 76px 0 28px;
  padding: 43px 42px;
  color: var(--ink);
  background: var(--paper);
  grid-template-columns: minmax(250px, 0.8fr) 1.2fr;
  gap: 50px;
  align-items: center;
}

.ownership-panel .panel-label {
  color: var(--red);
}

.ownership-panel h3 {
  margin: 16px 0 0;
}

.ownership-panel p {
  margin: 0;
  color: rgba(8, 10, 12, 0.67);
  font-size: 18px;
}

.exception-grid {
  display: grid;
  gap: 28px;
  grid-template-columns: 1fr 1fr;
}

.exception-grid article {
  position: relative;
  padding: 32px;
  background: rgba(255, 255, 255, 0.035);
  border: 1px solid var(--line-dark);
}

.flag {
  display: inline-flex;
  padding: 7px 9px;
  color: var(--red-bright);
  border: 1px solid rgba(255, 52, 64, 0.55);
  font-family: var(--mono);
  font-size: 8px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.exception-grid h3 {
  margin: 28px 0 10px;
}

.exception-grid p {
  margin: 0;
  color: rgba(255, 255, 255, 0.59);
}

.discovery-card {
  display: grid;
  padding: 0;
  overflow: hidden;
  color: var(--white);
  background: var(--ink);
  grid-template-columns: 120px 1fr 1.4fr;
}

.discovery-index {
  display: flex;
  padding: 25px;
  color: var(--white);
  background: var(--red);
  font-family: var(--display);
  font-size: 22px;
  font-weight: 800;
  letter-spacing: 0.08em;
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  align-items: center;
}

.discovery-copy {
  padding: 45px 35px;
}

.discovery-copy .panel-label {
  color: var(--red-bright);
}

.discovery-card h3 {
  margin: 42px 0 18px;
}

.discovery-copy p {
  color: rgba(255, 255, 255, 0.62);
}

.check-grid {
  display: grid;
  margin: 0;
  padding: 40px 36px;
  background: rgba(255, 255, 255, 0.045);
  grid-template-columns: 1fr 1fr;
  gap: 0 24px;
  align-content: center;
  list-style: none;
}

.check-grid li {
  position: relative;
  padding: 12px 0 12px 22px;
  border-bottom: 1px solid var(--line-dark);
  font-size: 12px;
}

.check-grid li::before {
  position: absolute;
  left: 0;
  content: "×";
  color: var(--red-bright);
  font-family: var(--mono);
}

.track-grid {
  display: grid;
  margin-top: 30px;
  gap: 24px;
  grid-template-columns: repeat(2, 1fr);
  align-items: start;
}

.track-card {
  min-height: 720px;
  padding: 28px;
  background: rgba(255, 255, 255, 0.28);
  border: 1px solid var(--line-light);
}

.track-header {
  display: flex;
  padding-bottom: 18px;
  border-bottom: 1px solid currentColor;
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  justify-content: space-between;
}

.track-header span {
  color: var(--red);
}

.track-card h3 {
  margin: 52px 0 30px;
}

.track-card li {
  position: relative;
  padding: 11px 0 11px 19px;
  border-top: 1px solid currentColor;
  font-size: 13px;
  line-height: 1.45;
}

.track-card li::before {
  color: var(--red);
}

.track-card li strong {
  font-weight: 700;
}

.qa-strip {
  display: grid;
  margin-top: 30px;
  padding: 42px;
  color: var(--white);
  background: var(--ink);
  grid-template-columns: 0.8fr 1.2fr;
  gap: 46px;
}

.qa-strip .panel-label {
  color: var(--red-bright);
}

.qa-strip h3 {
  margin: 28px 0 0;
}

.qa-strip ul {
  display: grid;
  margin: 0;
  grid-template-columns: 1fr 1fr;
  gap: 0 28px;
}

.qa-strip li {
  position: relative;
  padding: 12px 0 12px 20px;
  border-top: 1px solid var(--line-dark);
  font-size: 12px;
}

.section-track {
  overflow: hidden;
  background:
    linear-gradient(90deg, rgba(225, 39, 47, 0.08), transparent 30%),
    #0b0d10;
}

.section-track::after {
  position: absolute;
  top: -120px;
  right: -110px;
  z-index: 0;
  width: 420px;
  height: 420px;
  content: "";
  border: 90px solid rgba(255, 255, 255, 0.024);
  border-radius: 50%;
}

.timeline {
  position: relative;
}

.timeline::before {
  position: absolute;
  top: 18px;
  bottom: 18px;
  left: calc(180px + 7px);
  width: 2px;
  content: "";
  background: linear-gradient(var(--red), rgba(255, 255, 255, 0.14));
}

.timeline-item {
  position: relative;
  display: grid;
  min-height: 122px;
  grid-template-columns: 180px 32px 1fr;
  gap: 0 26px;
}

.timeline-date {
  display: flex;
  padding-top: 12px;
  color: rgba(255, 255, 255, 0.45);
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.08em;
  justify-content: space-between;
}

.timeline-marker {
  position: relative;
  z-index: 2;
  display: flex;
  padding-top: 11px;
  justify-content: center;
}

.timeline-marker b {
  display: block;
  width: 16px;
  height: 16px;
  background: var(--ink);
  border: 2px solid var(--red-bright);
  border-radius: 50%;
  box-shadow: 0 0 0 6px rgba(225, 39, 47, 0.1);
}

.timeline-copy {
  padding: 7px 0 34px;
  border-bottom: 1px solid var(--line-dark);
}

.timeline-copy > span {
  color: var(--red-bright);
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.timeline-copy h3 {
  margin: 7px 0 5px;
  font-family: var(--display);
  font-size: 27px;
  line-height: 1;
  text-transform: uppercase;
}

.timeline-copy p {
  margin: 0;
  color: rgba(255, 255, 255, 0.55);
  font-size: 14px;
}

.timeline-freeze .timeline-marker b {
  border-color: #8e939c;
}

.timeline-launch .timeline-marker b {
  background: var(--red-bright);
  box-shadow: 0 0 24px rgba(255, 52, 64, 0.68);
}

.timeline-launch .timeline-copy h3 {
  color: var(--red-bright);
}

.gate-note {
  display: grid;
  margin: 45px 0 0 238px;
  padding: 25px;
  background: rgba(225, 39, 47, 0.12);
  border: 1px solid rgba(225, 39, 47, 0.45);
  grid-template-columns: 190px 1fr;
  gap: 28px;
}

.gate-note strong {
  color: var(--red-bright);
  font-family: var(--display);
  font-size: 17px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.gate-note p {
  margin: 0;
  color: rgba(255, 255, 255, 0.63);
  font-size: 13px;
}

.investment-layout {
  display: grid;
  color: var(--white);
  background: var(--ink);
  grid-template-columns: 0.8fr 1.2fr;
}

.investment-total {
  padding: 50px 42px;
  background:
    linear-gradient(150deg, rgba(225, 39, 47, 0.26), transparent 55%),
    var(--ink);
  border-right: 1px solid var(--line-dark);
}

.investment-total .panel-label {
  color: rgba(255, 255, 255, 0.5);
}

.investment-total > strong {
  display: block;
  margin: 60px 0 30px;
  color: var(--white);
  font-family: var(--display);
  font-size: clamp(66px, 7.4vw, 120px);
  font-weight: 900;
  letter-spacing: -0.06em;
  line-height: 0.78;
}

.investment-total sup {
  color: var(--red-bright);
  font-size: 0.28em;
  vertical-align: top;
}

.investment-total p {
  max-width: 320px;
  margin: 0;
  color: rgba(255, 255, 255, 0.54);
  font-size: 13px;
}

.investment-pay-link {
  display: flex;
  margin-top: 34px;
  padding: 15px 0 12px;
  color: var(--white);
  border-top: 1px solid var(--line-dark);
  border-bottom: 1px solid var(--line-dark);
  font-family: var(--mono);
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  justify-content: space-between;
  transition: color 200ms ease, padding 250ms var(--ease-out);
}

.investment-pay-link:hover {
  padding-right: 5px;
  color: var(--red-bright);
}

.investment-table {
  padding: 22px 34px;
}

.investment-row {
  display: grid;
  min-height: 62px;
  padding: 0 8px;
  border-bottom: 1px solid var(--line-dark);
  grid-template-columns: 1fr auto;
  align-items: center;
}

.investment-row > span {
  color: rgba(255, 255, 255, 0.73);
  font-size: 14px;
}

.investment-row > span b {
  display: inline-flex;
  width: 34px;
  color: var(--red-bright);
  font-family: var(--mono);
  font-size: 9px;
}

.investment-row > strong {
  font-family: var(--display);
  font-size: 22px;
  letter-spacing: 0.02em;
}

.investment-head {
  min-height: 42px;
  color: rgba(255, 255, 255, 0.37);
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.investment-head > span {
  color: inherit;
  font-size: inherit;
}

.investment-row-total {
  border-bottom: 0;
}

.investment-row-total > span,
.investment-row-total > strong {
  color: var(--red-bright);
  font-size: 25px;
  font-weight: 800;
}

.scope-lock {
  display: grid;
  padding: 24px 28px;
  color: var(--ink);
  background: var(--red-bright);
  grid-template-columns: 210px 1fr;
  gap: 30px;
  align-items: center;
}

.scope-lock span {
  font-family: var(--display);
  font-size: 19px;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.scope-lock p {
  margin: 0;
  font-size: 13px;
}

.costs-heading {
  display: grid;
  margin: 78px 0 28px;
  grid-template-columns: 250px 1fr;
  align-items: end;
}

.costs-heading .panel-label {
  color: rgba(8, 10, 12, 0.44);
}

.costs-heading h3 {
  margin: 0;
}

.cost-grid {
  display: grid;
  border-top: 1px solid var(--line-light);
  border-left: 1px solid var(--line-light);
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.cost-grid article {
  min-height: 180px;
  padding: 24px;
  background: rgba(255, 255, 255, 0.18);
  border-right: 1px solid var(--line-light);
  border-bottom: 1px solid var(--line-light);
}

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

.cost-grid span {
  min-height: 35px;
  color: rgba(8, 10, 12, 0.48);
  font-family: var(--mono);
  font-size: 8px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.cost-grid strong {
  margin: 15px 0 8px;
  font-family: var(--display);
  font-size: 23px;
  line-height: 1;
  text-transform: uppercase;
}

.cost-grid p,
.cost-note {
  color: rgba(8, 10, 12, 0.57);
  font-size: 12px;
}

.cost-grid p {
  margin: 0;
}

.cost-note {
  max-width: 800px;
  margin: 24px 0 0;
}

.section-aftermarket {
  position: relative;
  overflow: hidden;
  color: var(--white);
  background: #0b0c0e;
}

.aftermarket-image {
  position: absolute;
  inset: 0 0 auto 55%;
  height: 620px;
  opacity: 0.42;
  background-image:
    linear-gradient(90deg, #0b0c0e, transparent 50%),
    linear-gradient(0deg, #0b0c0e, transparent 55%),
    url("/images/story-suspension.jpg");
  background-position: center;
  background-size: cover;
  filter: saturate(0.55) contrast(1.15);
  transform: skewX(-7deg) translateX(8%);
}

.section-aftermarket::before {
  position: absolute;
  inset: 0;
  content: "";
  background:
    linear-gradient(115deg, rgba(225, 39, 47, 0.16), transparent 33%),
    linear-gradient(45deg, rgba(255, 255, 255, 0.018) 25%, transparent 25%, transparent 75%, rgba(255, 255, 255, 0.018) 75%);
  background-size: auto, 10px 10px;
}

.aftermarket-title-row {
  display: flex;
  grid-column: 1 / -1;
  align-items: end;
  justify-content: space-between;
}

.aftermarket-title-row strong {
  padding-bottom: 8px;
  color: var(--red-bright);
  font-family: var(--display);
  font-size: clamp(70px, 8vw, 125px);
  font-weight: 900;
  letter-spacing: -0.05em;
  line-height: 0.75;
}

.section-aftermarket .section-heading .lede {
  grid-column: 2;
}

.brand-cloud {
  display: flex;
  margin-bottom: 66px;
  flex-wrap: wrap;
  gap: 9px;
}

.brand-cloud span {
  color: rgba(255, 255, 255, 0.82);
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--line-dark);
}

.brand-cloud span:nth-child(2n) {
  border-color: rgba(225, 39, 47, 0.5);
}

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

.aftermarket-grid article {
  min-height: 265px;
  padding: 27px;
  background: rgba(255, 255, 255, 0.025);
  border-right: 1px solid var(--line-dark);
  border-bottom: 1px solid var(--line-dark);
}

.aftermarket-grid article > span,
.principle-grid article > span {
  color: var(--red-bright);
  font-family: var(--mono);
  font-size: 9px;
}

.aftermarket-grid h3 {
  margin: 42px 0 12px;
  font-size: 30px;
}

.aftermarket-grid p {
  margin: 0;
  color: rgba(255, 255, 255, 0.56);
  font-size: 14px;
}

.coverage-note {
  display: grid;
  margin-top: 32px;
  padding: 35px;
  background: rgba(225, 39, 47, 0.11);
  border: 1px solid rgba(225, 39, 47, 0.4);
  grid-template-columns: 170px 1fr 280px;
  gap: 32px;
}

.coverage-note .panel-label {
  color: var(--red-bright);
}

.coverage-note ul {
  margin: 0;
}

.coverage-note li {
  position: relative;
  padding: 0 0 12px 18px;
  color: rgba(255, 255, 255, 0.63);
  font-size: 13px;
}

.aftermarket-costs {
  display: grid;
  align-content: start;
}

.aftermarket-costs span {
  color: rgba(255, 255, 255, 0.4);
  font-family: var(--mono);
  font-size: 8px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.aftermarket-costs strong {
  margin: 4px 0 18px;
  font-family: var(--display);
  font-size: 18px;
  text-transform: uppercase;
}

.boundary-grid {
  display: grid;
  border: 1px solid var(--line-dark);
  grid-template-columns: 1fr 1fr;
}

.boundary-card {
  padding: 38px;
  background: rgba(255, 255, 255, 0.025);
}

.boundary-card + .boundary-card {
  border-left: 1px solid var(--line-dark);
}

.boundary-tag {
  display: inline-flex;
  padding: 7px 10px;
  color: var(--red-bright);
  border: 1px solid rgba(225, 39, 47, 0.6);
  font-family: var(--mono);
  font-size: 8px;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.boundary-out .boundary-tag {
  color: rgba(255, 255, 255, 0.54);
  border-color: rgba(255, 255, 255, 0.28);
}

.boundary-card h3 {
  margin: 42px 0 28px;
}

.boundary-card li {
  position: relative;
  padding: 12px 0 12px 26px;
  color: rgba(255, 255, 255, 0.7);
  border-top: 1px solid var(--line-dark);
  font-size: 14px;
}

.boundary-card li::before {
  position: absolute;
  left: 0;
  content: "+";
  color: var(--red-bright);
  font-family: var(--mono);
}

.boundary-out li::before {
  content: "—";
  color: rgba(255, 255, 255, 0.4);
}

.assumptions {
  margin-top: 72px;
}

.assumptions .panel-label {
  display: block;
  margin-bottom: 26px;
  color: rgba(255, 255, 255, 0.44);
}

.assumptions ol {
  display: grid;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line-dark);
  border-left: 1px solid var(--line-dark);
  grid-template-columns: 1fr 1fr;
  list-style: none;
}

.assumptions li {
  display: grid;
  min-height: 155px;
  padding: 26px;
  border-right: 1px solid var(--line-dark);
  border-bottom: 1px solid var(--line-dark);
  grid-template-columns: 38px 1fr;
}

.assumptions li > span {
  color: var(--red-bright);
  font-family: var(--mono);
  font-size: 9px;
}

.assumptions p {
  margin: 0;
  color: rgba(255, 255, 255, 0.62);
  font-size: 14px;
}

.principle-grid {
  display: grid;
  border-top: 1px solid var(--line-light);
  border-left: 1px solid var(--line-light);
  grid-template-columns: repeat(4, 1fr);
}

.principle-grid article {
  min-height: 330px;
  padding: 28px;
  background: rgba(255, 255, 255, 0.2);
  border-right: 1px solid var(--line-light);
  border-bottom: 1px solid var(--line-light);
}

.principle-grid h3 {
  margin: 82px 0 16px;
  font-size: 30px;
}

.principle-grid p {
  margin: 0;
  color: rgba(8, 10, 12, 0.59);
  font-size: 14px;
}

.delivery-quote {
  display: grid;
  margin-top: 32px;
  padding: 42px;
  color: var(--white);
  background: var(--red);
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: end;
}

.delivery-quote span {
  color: rgba(255, 255, 255, 0.7);
  font-size: 17px;
}

.delivery-quote strong {
  font-family: var(--display);
  font-size: clamp(34px, 4vw, 57px);
  line-height: 0.95;
  text-transform: uppercase;
}

.section-cta {
  min-height: 100vh;
  padding-bottom: 0;
  overflow: hidden;
  color: var(--white);
  background:
    radial-gradient(circle at 79% 22%, rgba(225, 39, 47, 0.22), transparent 30%),
    #08090b;
}

.section-cta::before {
  position: absolute;
  top: -20%;
  right: -10%;
  width: 55%;
  height: 130%;
  content: "";
  background: linear-gradient(180deg, transparent, rgba(225, 39, 47, 0.15), transparent);
  transform: skewX(-15deg);
}

.cta-copy {
  max-width: 850px;
}

.cta-copy .eyebrow {
  margin-bottom: 40px;
}

.cta-copy p:not(.eyebrow) {
  max-width: 680px;
  margin: 34px 0 0;
  color: rgba(255, 255, 255, 0.65);
  font-size: 19px;
}

.next-steps {
  display: grid;
  margin-top: 88px;
  border-top: 1px solid var(--line-dark);
  border-bottom: 1px solid var(--line-dark);
  grid-template-columns: repeat(3, 1fr);
}

.next-steps article {
  display: grid;
  min-height: 120px;
  padding: 25px;
  border-right: 1px solid var(--line-dark);
  grid-template-columns: 42px 1fr;
}

.next-steps article:last-child {
  border-right: 0;
}

.next-steps article > span {
  color: var(--red-bright);
  font-family: var(--mono);
  font-size: 9px;
}

.next-steps strong {
  display: block;
  font-family: var(--display);
  font-size: 20px;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.next-steps p {
  margin: 6px 0 0;
  color: rgba(255, 255, 255, 0.45);
  font-size: 12px;
}

footer {
  display: grid;
  margin-top: 84px;
  min-height: 110px;
  border-top: 1px solid var(--line-dark);
  grid-template-columns: 130px 1fr auto auto;
  gap: 25px;
  align-items: center;
}

footer img {
  width: 98px;
}

footer div strong,
footer div span {
  display: block;
}

footer div strong {
  font-family: var(--display);
  font-size: 16px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

footer div span,
footer > a,
.footer-date {
  color: rgba(255, 255, 255, 0.48);
  font-family: var(--mono);
  font-size: 8px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

footer > a:hover {
  color: var(--red-bright);
}

.reveal {
  opacity: 1;
  transform: none;
}

.motion-ready .reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 700ms ease, transform 850ms var(--ease-out);
}

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

@keyframes status-pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(255, 52, 64, 0.58); }
  50% { box-shadow: 0 0 0 6px rgba(255, 52, 64, 0); }
}

@keyframes speed-line {
  0%, 100% { opacity: 0.15; transform: rotate(-7deg) translateX(-8%); }
  50% { opacity: 0.58; transform: rotate(-7deg) translateX(8%); }
}

@keyframes rule-grow {
  from { transform: skewX(-24deg) scaleX(0); }
  to { transform: skewX(-24deg) scaleX(1); }
}

@keyframes scroll-line {
  0% { transform: translateX(-110%); }
  100% { transform: translateX(210%); }
}

@media (max-width: 1180px) {
  :root { --rail-width: 224px; }
  .rail { padding-inline: 18px; }
  .nav-link { grid-template-columns: 25px 1fr; }
  .hero-content { width: 74%; }
  .hero h1 { font-size: clamp(70px, 9.3vw, 124px); }
  .hero-specs { min-width: 460px; }
  .system-card { padding-inline: 23px; }
  .track-grid { grid-template-columns: 1fr; }
  .track-card { min-height: auto; }
  .track-card ul { columns: 2; column-gap: 42px; }
  .track-card li { break-inside: avoid; }
  .principle-grid { grid-template-columns: 1fr 1fr; }
  .principle-grid article { min-height: 260px; }
}

@media (max-width: 860px) {
  :root { --rail-width: 0px; }
  html { scroll-padding-top: 68px; }
  .page-progress { left: 0; }
  .mobile-header {
    position: fixed;
    inset: 0 0 auto 0;
    z-index: 300;
    display: flex;
    height: 68px;
    padding: 0 20px;
    color: var(--white);
    background: rgba(7, 8, 10, 0.94);
    border-bottom: 1px solid var(--line-dark);
    backdrop-filter: blur(16px);
    align-items: center;
    justify-content: space-between;
  }
  .mobile-logo img { width: 88px; }
  .menu-toggle {
    display: flex;
    padding: 8px 0;
    color: var(--white);
    background: transparent;
    border: 0;
    font-family: var(--mono);
    font-size: 9px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    align-items: center;
    gap: 11px;
  }
  .menu-toggle i,
  .menu-toggle i::before {
    display: block;
    width: 20px;
    height: 1px;
    content: "";
    background: currentColor;
    transition: transform 250ms ease;
  }
  .menu-toggle i::before { transform: translateY(6px); }
  .menu-toggle[aria-expanded="true"] i { transform: translateY(3px) rotate(45deg); }
  .menu-toggle[aria-expanded="true"] i::before { transform: rotate(-90deg); }
  .rail {
    inset: 68px 0 0;
    width: 100%;
    padding: 25px 20px;
    visibility: hidden;
    pointer-events: none;
    transform: translateX(-105%);
    transition: transform 450ms var(--ease-out), visibility 0s linear 450ms;
  }
  .rail.is-open {
    visibility: visible;
    pointer-events: auto;
    transform: translateX(0);
    transition-delay: 0s;
  }
  .rail-brand,
  .rail-meta { display: none; }
  .rail nav { gap: 5px; }
  .nav-link { min-height: 46px; padding-inline: 14px; grid-template-columns: 40px 1fr; }
  .nav-link span { font-size: 10px; }
  .nav-link strong { font-size: 17px; }
  main { margin-left: 0; }
  .hero { min-height: 850px; padding: 122px 24px 180px; align-items: flex-start; }
  .hero-image {
    background-image:
      linear-gradient(90deg, rgba(7, 8, 10, 0.94), rgba(7, 8, 10, 0.42)),
      linear-gradient(0deg, rgba(7, 8, 10, 0.95), transparent 65%),
      url("/images/hero-pro-r.jpg");
    background-position: 58% center;
  }
  .hero::after { left: 75%; opacity: 0.5; }
  .hero-content { width: 100%; padding-bottom: 0; }
  .hero h1 { font-size: clamp(65px, 18vw, 108px); }
  .hero h1 .accent-line::after { right: -75px; width: 62px; height: 3px; }
  .hero-summary { max-width: 600px; }
  .hero-specs {
    right: 24px;
    bottom: 48px;
    left: 24px;
    min-width: 0;
    grid-template-columns: 1fr 1fr;
  }
  .hero-specs div:nth-child(2) { border-right: 0; }
  .hero-specs div:nth-child(-n + 2) { border-bottom: 1px solid var(--line-dark); }
  .scroll-cue { display: none; }
  .section { padding: 92px 24px; }
  .section-heading { display: block; margin-bottom: 46px; }
  .section-heading .eyebrow { margin-bottom: 31px; }
  .section-heading h2,
  .cta-copy h2 { font-size: clamp(54px, 14vw, 82px); }
  .section-heading .lede { max-width: 620px; margin-top: 30px; font-size: 17px; }
  .metric-grid { grid-template-columns: 1fr 1fr; }
  .metric-card:nth-child(2) { border-right: 0; }
  .metric-card:nth-child(-n + 2) { border-bottom: 1px solid var(--line-light); }
  .vehicle-band { grid-template-columns: 1fr; }
  .system-stack { grid-template-columns: 1fr; }
  .system-card { min-height: auto; border-right: 0; border-bottom: 1px solid var(--line-dark); }
  .system-card:last-child { border-bottom: 0; }
  .data-flow { grid-template-columns: 1fr; gap: 16px; }
  .data-flow > i { transform: rotate(90deg); }
  .ownership-panel { grid-template-columns: 1fr; gap: 28px; }
  .exception-grid { grid-template-columns: 1fr; }
  .discovery-card { grid-template-columns: 76px 1fr; }
  .check-grid { grid-column: 1 / -1; }
  .qa-strip { grid-template-columns: 1fr; }
  .timeline::before { left: 11px; }
  .timeline-item { grid-template-columns: 34px 1fr; gap: 0 18px; }
  .timeline-date { display: none; }
  .timeline-marker { grid-column: 1; }
  .timeline-copy { grid-column: 2; }
  .gate-note { margin-left: 0; grid-template-columns: 1fr; }
  .investment-layout { grid-template-columns: 1fr; }
  .investment-total { border-right: 0; border-bottom: 1px solid var(--line-dark); }
  .scope-lock { grid-template-columns: 1fr; }
  .costs-heading { grid-template-columns: 1fr; gap: 24px; }
  .cost-grid { grid-template-columns: 1fr 1fr; }
  .aftermarket-title-row { display: block; }
  .aftermarket-title-row strong { display: block; margin-top: 35px; }
  .section-aftermarket .section-heading .lede { margin-top: 35px; }
  .aftermarket-grid { grid-template-columns: 1fr 1fr; }
  .coverage-note { grid-template-columns: 1fr; }
  .boundary-grid { grid-template-columns: 1fr; }
  .boundary-card + .boundary-card { border-top: 1px solid var(--line-dark); border-left: 0; }
  .principle-grid { grid-template-columns: 1fr 1fr; }
  footer { grid-template-columns: 110px 1fr; padding: 30px 0; }
  footer > a,
  .footer-date { grid-column: 2; }
}

@media (max-width: 560px) {
  body { font-size: 16px; }
  .hero { min-height: 830px; padding-inline: 19px; }
  .hero-kicker { display: grid; gap: 9px; }
  .hero h1 { font-size: clamp(59px, 19vw, 87px); }
  .hero-summary { font-size: 16px; }
  .hero-actions,
  .cta-actions { display: grid; }
  .button { width: 100%; }
  .hero-specs { right: 19px; left: 19px; }
  .section { padding: 78px 19px; }
  .metric-grid { grid-template-columns: 1fr; }
  .metric-card { min-height: 190px; border-right: 0; border-bottom: 1px solid var(--line-light); }
  .metric-card:last-child { border-bottom: 0; }
  .metric-card strong { margin-top: 28px; }
  .signal-panel { padding: 30px 24px; grid-template-columns: 1fr; }
  .signal-mark { font-size: 48px; }
  .signal-panel blockquote { font-size: 28px; }
  .ownership-panel { padding: 31px 24px; }
  .discovery-card { grid-template-columns: 1fr; }
  .discovery-index { min-height: 64px; padding: 17px 24px; writing-mode: initial; transform: none; align-items: center; }
  .discovery-copy { padding: 32px 24px; }
  .check-grid { padding: 26px 24px; grid-template-columns: 1fr; }
  .track-card { padding: 24px 21px; }
  .track-card ul { columns: auto; }
  .qa-strip { padding: 30px 24px; }
  .qa-strip ul { grid-template-columns: 1fr; }
  .investment-total { padding: 40px 25px; }
  .investment-table { padding: 14px 17px; }
  .investment-row { min-height: 68px; }
  .investment-row > span { max-width: 190px; }
  .cost-grid,
  .aftermarket-grid,
  .assumptions ol,
  .principle-grid { grid-template-columns: 1fr; }
  .aftermarket-image { left: 10%; opacity: 0.22; }
  .aftermarket-grid article { min-height: auto; }
  .assumptions li { min-height: auto; }
  .principle-grid article { min-height: auto; }
  .principle-grid h3 { margin-top: 48px; }
  .delivery-quote { padding: 30px 24px; grid-template-columns: 1fr; }
  .next-steps { grid-template-columns: 1fr; }
  .next-steps article { border-right: 0; border-bottom: 1px solid var(--line-dark); }
  .next-steps article:last-child { border-bottom: 0; }
  footer { grid-template-columns: 1fr; gap: 16px; }
  footer > a,
  .footer-date { grid-column: 1; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .motion-ready .reveal { opacity: 1; transform: none; }
}