:root {
  --black: #080807;
  --carbon: #121211;
  --ink: #181715;
  --muted: #6d6963;
  --line: #ded9d1;
  --paper: #f5f3ef;
  --white: #fffefd;
  --rust: #d7472f;
  --rust-dark: #9f2b20;
  --gold: #d8ad70;
  --shadow: 0 22px 60px rgba(14, 12, 10, 0.18);
  --max: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  letter-spacing: 0;
}

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

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

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 20;
  height: 76px;
  display: flex;
  align-items: center;
  gap: 34px;
  padding: 0 clamp(18px, 4vw, 52px);
  background: rgba(7, 7, 6, 0.88);
  color: var(--white);
  backdrop-filter: blur(14px);
  transition: background 180ms ease, height 180ms ease;
}

.site-header.is-scrolled {
  height: 64px;
  background: rgba(7, 7, 6, 0.96);
}

.brand {
  display: inline-flex;
  align-items: center;
  width: clamp(176px, 16vw, 248px);
  white-space: nowrap;
}

.brand img {
  width: 100%;
  height: auto;
}

.footer-brand {
  width: clamp(190px, 18vw, 270px);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: clamp(18px, 2vw, 32px);
  margin-left: auto;
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
}

.nav-links a {
  opacity: 0.82;
}

.nav-links a:hover {
  opacity: 1;
}

.nav-action,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  border: 1px solid rgba(255, 255, 255, 0.42);
  padding: 0 18px;
  font-size: 0.76rem;
  font-weight: 850;
  text-transform: uppercase;
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  background: transparent;
  color: var(--white);
}

.menu-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 5px auto;
  background: currentColor;
}

.section-snap {
  position: relative;
}

.hero {
  min-height: 100svh;
  display: grid;
  align-items: center;
  overflow: hidden;
  background: var(--black);
}

.hero-image,
.hero-shade {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-image {
  object-fit: cover;
  object-position: 63% center;
}

.hero-shade {
  background:
    linear-gradient(90deg, rgba(5, 5, 5, 0.92) 0%, rgba(5, 5, 5, 0.74) 28%, rgba(5, 5, 5, 0.12) 62%, rgba(5, 5, 5, 0.32) 100%),
    linear-gradient(0deg, rgba(5, 5, 5, 0.44), transparent 42%);
}

.hero-content {
  position: relative;
  z-index: 2;
  width: min(720px, calc(100% - 40px));
  margin-left: clamp(20px, 7vw, 96px);
  padding-top: 64px;
  color: var(--white);
}

.hero h1 {
  margin: 0;
  width: min(640px, 88vw);
}

.hero-logo {
  width: 100%;
  height: auto;
  filter: drop-shadow(0 18px 34px rgba(0, 0, 0, 0.34));
}

.hero-lede {
  margin: 26px 0 0;
  max-width: 680px;
  font-size: clamp(1.45rem, 2.3vw, 2.45rem);
  font-weight: 800;
}

.hero-copy {
  max-width: 550px;
  margin: 18px 0 0;
  color: rgba(255, 255, 255, 0.78);
  font-size: clamp(1rem, 1.2vw, 1.18rem);
  line-height: 1.65;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 34px;
}

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

.button.ghost {
  background: rgba(8, 8, 7, 0.34);
  color: var(--white);
}

.scroll-cue {
  position: absolute;
  z-index: 2;
  left: 50%;
  bottom: 26px;
  transform: translateX(-50%);
  width: 42px;
  height: 42px;
  color: var(--white);
  opacity: 0.72;
}

.scroll-cue svg {
  width: 100%;
  height: 100%;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
}

.section-inner {
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
}

.mission,
.systems,
.proof,
.ecosystem,
.interest {
  background: var(--paper);
}

.mission,
.proof {
  padding: clamp(80px, 10vw, 140px) 0;
}

.two-column,
.image-copy,
.platform-grid,
.roadmap-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(38px, 6vw, 96px);
  align-items: center;
}

.section-label {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 16px;
  color: var(--rust);
  font-size: 0.75rem;
  font-weight: 900;
  text-transform: uppercase;
}

.section-label::before {
  content: "";
  width: 26px;
  height: 2px;
  background: currentColor;
}

h2 {
  margin: 0;
  font-size: clamp(2.2rem, 4vw, 4.45rem);
  line-height: 0.98;
  letter-spacing: 0;
}

.section-copy > p:not(.section-label) {
  max-width: 620px;
  color: var(--muted);
  font-size: clamp(1rem, 1.25vw, 1.16rem);
  line-height: 1.75;
}

.principles {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.principles article,
.ecosystem-rail article {
  border-top: 1px solid var(--line);
  padding-top: 24px;
}

.principles h3,
.ecosystem-rail h3 {
  margin: 18px 0 8px;
  font-size: 1.02rem;
}

.principles p,
.ecosystem-rail p {
  margin: 0;
  color: var(--muted);
  font-size: 0.93rem;
  line-height: 1.55;
}

.proof {
  padding-top: 0;
}

.proof-gallery {
  display: grid;
  grid-template-columns: 1.25fr 0.88fr 0.88fr;
  gap: 18px;
  margin-top: 48px;
}

.proof-gallery figure,
.platform-photo {
  margin: 0;
  overflow: hidden;
  background: var(--white);
  box-shadow: var(--shadow);
}

.proof-gallery img,
.platform-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.proof-gallery figure {
  min-height: 360px;
  position: relative;
}

.proof-gallery figure:first-child {
  min-height: 520px;
  grid-row: span 2;
}

.proof-gallery figcaption {
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 16px;
  padding: 12px 14px;
  background: rgba(8, 8, 7, 0.78);
  color: var(--white);
  font-size: 0.78rem;
  font-weight: 900;
  text-transform: uppercase;
}

.icon {
  display: block;
  width: 42px;
  height: 42px;
  border: 2px solid var(--ink);
  border-radius: 50%;
  position: relative;
}

.icon::after {
  content: "";
  position: absolute;
  inset: 11px;
  border: 2px solid currentColor;
}

.compass::after {
  transform: rotate(45deg);
  border-left-color: transparent;
  border-bottom-color: transparent;
}

.shield {
  border-radius: 50% 50% 46% 46%;
}

.shield::after {
  border-radius: 0 0 12px 12px;
  border-top: 0;
}

.range::after {
  border-radius: 2px 2px 12px 12px;
  transform: translateY(4px) rotate(45deg);
}

.platform,
.roadmap {
  background:
    radial-gradient(circle at 18% 16%, rgba(215, 71, 47, 0.18), transparent 32%),
    linear-gradient(135deg, #111 0%, #050505 100%);
  color: var(--white);
  padding: clamp(86px, 10vw, 150px) 0;
}

.dark-copy .section-copy > p,
.dark-copy p,
.platform p,
.roadmap p {
  color: rgba(255, 255, 255, 0.72);
}

.chassis-visual {
  position: relative;
  min-height: 330px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02)),
    repeating-linear-gradient(45deg, rgba(255,255,255,0.03) 0 1px, transparent 1px 9px);
  box-shadow: var(--shadow);
}

.platform-photo {
  min-height: 410px;
  border: 1px solid rgba(255, 255, 255, 0.14);
}

.axle-line {
  position: absolute;
  left: 12%;
  right: 12%;
  top: 50%;
  height: 4px;
  background: linear-gradient(90deg, transparent, #6f6c66 14%, #6f6c66 86%, transparent);
}

.chassis-visual span {
  position: absolute;
  bottom: 56px;
  width: 82px;
  height: 82px;
  border-radius: 50%;
  border: 13px solid #20201f;
  outline: 1px solid rgba(255, 255, 255, 0.22);
  background: radial-gradient(circle, #060606 0 22%, #3a3936 23% 34%, #090909 35%);
}

.chassis-visual span:nth-of-type(1) { left: 18%; }
.chassis-visual span:nth-of-type(2) { left: 43%; }
.chassis-visual span:nth-of-type(3) { left: 68%; }

.spec-grid {
  grid-column: 2;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px 28px;
}

.spec-grid article {
  border-top: 1px solid rgba(255, 255, 255, 0.16);
  padding-top: 16px;
}

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

.spec-grid strong {
  font-size: 1rem;
}

.spec-grid span {
  margin-top: 7px;
  color: rgba(255, 255, 255, 0.62);
  font-size: 0.9rem;
  line-height: 1.45;
}

.systems {
  padding: clamp(80px, 10vw, 140px) 0;
}

.media-frame {
  margin: 0;
  overflow: hidden;
  box-shadow: var(--shadow);
  background: var(--white);
}

.media-frame img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.system-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
  margin-top: 34px;
}

.system-list div {
  border-top: 1px solid var(--line);
  padding-top: 16px;
}

.system-list strong,
.system-list span {
  display: block;
}

.system-list span {
  margin-top: 6px;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.5;
}

.assembly {
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  min-height: 640px;
  background: var(--carbon);
  color: var(--white);
}

.assembly-image {
  margin: 0;
  min-height: 100%;
}

.assembly-image img {
  width: 100%;
  height: 100%;
  min-height: 640px;
  object-fit: cover;
}

.assembly-copy {
  align-self: center;
  padding: clamp(50px, 8vw, 110px);
}

.assembly-copy p:not(.section-label) {
  color: rgba(255, 255, 255, 0.72);
  line-height: 1.75;
  font-size: 1.08rem;
}

.assembly-points {
  display: grid;
  gap: 14px;
  margin-top: 34px;
}

.assembly-points span {
  border-top: 1px solid rgba(255, 255, 255, 0.17);
  padding-top: 14px;
  color: rgba(255, 255, 255, 0.86);
  font-weight: 800;
}

.ecosystem {
  padding: clamp(80px, 10vw, 140px) 0;
}

.wide-copy {
  max-width: 780px;
}

.ecosystem-rail {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 26px;
  margin-top: 58px;
}

.ecosystem-rail span {
  color: var(--rust);
  font-size: 1.9rem;
  font-weight: 900;
}

.roadmap-grid {
  align-items: start;
}

.timeline {
  display: grid;
  gap: 24px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.timeline li {
  display: grid;
  grid-template-columns: 145px 1fr;
  gap: 26px;
  border-top: 1px solid rgba(255, 255, 255, 0.17);
  padding-top: 22px;
}

.timeline strong {
  color: var(--rust);
  font-size: 1.2rem;
}

.timeline span {
  color: rgba(255, 255, 255, 0.72);
  line-height: 1.6;
}

.interest {
  padding: clamp(80px, 10vw, 140px) 0;
}

.interest-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
  gap: clamp(38px, 6vw, 90px);
  align-items: start;
}

.contact-notes {
  display: grid;
  gap: 12px;
  margin-top: 34px;
  max-width: 520px;
}

.contact-notes span {
  border-top: 1px solid var(--line);
  padding-top: 13px;
  font-weight: 850;
}

.lead-form {
  display: grid;
  gap: 18px;
  padding: clamp(22px, 3vw, 38px);
  background: var(--white);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.form-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.lead-form label {
  display: grid;
  gap: 8px;
  color: var(--ink);
  font-size: 0.78rem;
  font-weight: 900;
  text-transform: uppercase;
}

.lead-form input,
.lead-form select,
.lead-form textarea {
  width: 100%;
  border: 1px solid #cac4bb;
  border-radius: 0;
  background: #fbfaf7;
  color: var(--ink);
  font: inherit;
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.35;
  padding: 13px 14px;
  text-transform: none;
}

.lead-form textarea {
  resize: vertical;
  min-height: 132px;
}

.lead-form input:focus,
.lead-form select:focus,
.lead-form textarea:focus {
  outline: 2px solid rgba(215, 71, 47, 0.28);
  border-color: var(--rust);
}

.hp-field {
  position: absolute;
  left: -9999px;
}

.form-submit {
  width: fit-content;
  border: 0;
  cursor: pointer;
}

.form-submit:disabled {
  cursor: progress;
  opacity: 0.72;
}

.form-status {
  min-height: 1.45em;
  margin: 0;
  color: var(--muted);
  font-size: 0.94rem;
  font-weight: 700;
}

.form-status.is-success {
  color: #1e6843;
}

.form-status.is-error {
  color: var(--rust-dark);
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  padding: 34px clamp(20px, 4vw, 52px);
  background: var(--black);
  color: var(--white);
}

.site-footer p {
  margin: 0;
  color: rgba(255, 255, 255, 0.58);
  font-size: 0.9rem;
}

.site-footer p a {
  color: rgba(255, 255, 255, 0.78);
  font-weight: 800;
}

@media (max-width: 900px) {
  .site-header {
    height: 68px;
  }

  .nav-links,
  .nav-action {
    display: none;
  }

  .menu-toggle {
    display: block;
    margin-left: auto;
  }

  .site-header.is-open {
    height: auto;
    min-height: 68px;
    align-items: flex-start;
    flex-wrap: wrap;
    padding-top: 13px;
    padding-bottom: 14px;
  }

  .site-header.is-open .nav-links,
  .site-header.is-open .nav-action {
    display: flex;
    width: 100%;
  }

  .site-header.is-open .nav-links {
    order: 3;
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
    padding-top: 10px;
  }

  .site-header.is-open .nav-action {
    order: 4;
    width: auto;
  }

  .hero {
    min-height: 760px;
  }

  .hero-image {
    object-position: 68% center;
  }

  .hero-shade {
    background:
      linear-gradient(90deg, rgba(5, 5, 5, 0.93) 0%, rgba(5, 5, 5, 0.74) 45%, rgba(5, 5, 5, 0.18) 100%),
      linear-gradient(0deg, rgba(5, 5, 5, 0.52), transparent 42%);
  }

  .hero-content {
    margin-left: 20px;
    width: min(620px, calc(100% - 40px));
  }

  .two-column,
  .image-copy,
  .platform-grid,
  .roadmap-grid,
  .interest-grid,
  .assembly {
    grid-template-columns: 1fr;
  }

  .spec-grid {
    grid-column: auto;
  }

  .principles,
  .proof-gallery,
  .ecosystem-rail {
    grid-template-columns: repeat(2, 1fr);
  }

  .proof-gallery figure:first-child {
    grid-column: 1 / -1;
    grid-row: auto;
    min-height: 430px;
  }

  .assembly-image img {
    min-height: 420px;
  }

  .assembly-copy {
    padding: 48px 20px 70px;
  }
}

@media (max-width: 560px) {
  .brand {
    width: 174px;
  }

  .hero {
    min-height: 720px;
  }

  .hero h1 {
    width: min(340px, 88vw);
  }

  .button {
    width: 100%;
  }

  .principles,
  .proof-gallery,
  .spec-grid,
  .system-list,
  .form-row,
  .ecosystem-rail {
    grid-template-columns: 1fr;
  }

  .proof-gallery figure,
  .proof-gallery figure:first-child,
  .platform-photo {
    min-height: 280px;
  }

  .form-submit {
    width: 100%;
  }

  .chassis-visual {
    min-height: 240px;
  }

  .chassis-visual span {
    width: 58px;
    height: 58px;
    border-width: 9px;
    bottom: 45px;
  }

  .timeline li {
    grid-template-columns: 1fr;
    gap: 8px;
  }

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