:root {
  --navy: #0E1B3D;
  --navy-deep: #081127;
  --navy-soft: #1B2A52;
  --orange: #FF6B35;
  --teal: #26B7AC;
  --ink: #141A34;
  --slate: #475569;
  --muted: #A3ACBA;
  --line: #E8EAEE;
  --paper: #F7F8FA;
  --white: #FFFFFF;
  --shadow: 0 24px 70px rgba(14, 27, 61, 0.12);
  --container: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: "Trebuchet MS", "Segoe UI", Arial, sans-serif;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
}

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

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

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

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

.skip-link {
  position: fixed;
  z-index: 999;
  top: 12px;
  left: 12px;
  padding: 10px 14px;
  color: var(--navy);
  background: var(--white);
  border-radius: 8px;
  transform: translateY(-150%);
}

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

.container {
  width: min(calc(100% - 40px), var(--container));
  margin-inline: auto;
}

.site-header {
  position: fixed;
  z-index: 100;
  inset: 0 0 auto;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(8, 17, 39, 0.72);
  backdrop-filter: blur(18px);
  transition: background 220ms ease, box-shadow 220ms ease;
}

.site-header.scrolled {
  background: rgba(8, 17, 39, 0.94);
  box-shadow: 0 12px 35px rgba(0, 0, 0, 0.18);
}

.header-inner {
  min-height: 78px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 28px;
}

.brand {
  width: 214px;
}

.brand img {
  width: 100%;
}

.desktop-nav {
  display: flex;
  align-items: center;
  gap: 30px;
  color: rgba(255, 255, 255, 0.72);
  font-size: 14px;
}

.desktop-nav a,
.header-contact {
  transition: color 160ms ease;
}

.desktop-nav a:hover,
.desktop-nav a:focus-visible {
  color: var(--white);
}

.header-contact {
  justify-self: end;
  padding: 10px 16px;
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 999px;
  font-size: 14px;
}

.header-contact:hover,
.header-contact:focus-visible {
  color: var(--navy);
  background: var(--white);
}

.hero {
  position: relative;
  min-height: 920px;
  overflow: hidden;
  color: var(--white);
  background:
    radial-gradient(circle at 82% 32%, rgba(38, 183, 172, 0.11), transparent 28%),
    radial-gradient(circle at 10% 80%, rgba(255, 107, 53, 0.09), transparent 30%),
    var(--navy-deep);
  border-top: 5px solid var(--orange);
}

.hero-grid {
  position: absolute;
  inset: 0;
  opacity: 0.11;
  background-image:
    linear-gradient(rgba(255,255,255,.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.06) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(to bottom, black, transparent 76%);
}

.hero-letter {
  position: absolute;
  right: -40px;
  top: 15px;
  font-family: Georgia, serif;
  font-style: italic;
  font-weight: 700;
  font-size: clamp(500px, 58vw, 830px);
  line-height: 0.95;
  color: rgba(44, 65, 119, 0.38);
  pointer-events: none;
  user-select: none;
}

.hero-layout {
  position: relative;
  z-index: 2;
  min-height: 740px;
  padding-top: 160px;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(380px, 0.92fr);
  align-items: center;
  gap: 48px;
}

.status-pill {
  width: fit-content;
  margin-bottom: 30px;
  padding: 8px 13px;
  display: flex;
  align-items: center;
  gap: 9px;
  color: rgba(255,255,255,.82);
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 999px;
  font-family: Consolas, "Courier New", monospace;
  font-size: 12px;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.status-dot {
  width: 8px;
  height: 8px;
  background: var(--teal);
  border-radius: 50%;
  box-shadow: 0 0 0 5px rgba(38, 183, 172, .12);
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--orange);
  font-family: Consolas, "Courier New", monospace;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .26em;
}

.eyebrow.dark {
  color: var(--orange);
}

.hero h1,
.section-heading h2,
.platform-copy h2,
.validation-copy h2,
.contact-card h2 {
  margin: 0;
  letter-spacing: -.045em;
  line-height: 1.05;
}

.hero h1 {
  max-width: 760px;
  font-size: clamp(52px, 5.4vw, 82px);
}

.hero h1 em {
  color: var(--orange);
  font-family: Georgia, serif;
  font-weight: 400;
}

.hero-text {
  max-width: 710px;
  margin: 30px 0 0;
  color: rgba(255,255,255,.72);
  font-size: clamp(18px, 1.7vw, 22px);
  line-height: 1.65;
}

.hero-actions {
  margin-top: 38px;
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.button {
  min-height: 50px;
  padding: 0 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  border-radius: 4px;
  font-weight: 700;
  transition: transform 160ms ease, background 160ms ease, border-color 160ms ease, color 160ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
}

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

.button-primary:hover,
.button-primary:focus-visible {
  background: #ff7a4b;
}

.button-secondary {
  color: var(--white);
  border-color: rgba(255,255,255,.25);
}

.button-secondary:hover,
.button-secondary:focus-visible {
  border-color: rgba(255,255,255,.65);
  background: rgba(255,255,255,.06);
}

.hero-visual {
  position: relative;
  min-height: 520px;
  display: grid;
  place-items: center;
}

.visual-glow {
  position: absolute;
  width: 360px;
  height: 360px;
  background: radial-gradient(circle, rgba(38, 183, 172, .24), rgba(38, 183, 172, .02) 60%, transparent 70%);
  filter: blur(8px);
}

.tire-image {
  position: relative;
  z-index: 2;
  width: min(100%, 610px);
  filter: drop-shadow(0 36px 40px rgba(0,0,0,.45));
  animation: float 5.5s ease-in-out infinite;
}

.orbit {
  position: absolute;
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 50%;
}

.orbit-one {
  width: 440px;
  height: 440px;
}

.orbit-two {
  width: 540px;
  height: 540px;
  border-color: rgba(255,107,53,.12);
}

.visual-label {
  position: absolute;
  z-index: 3;
  padding: 8px 12px;
  color: rgba(255,255,255,.76);
  background: rgba(8, 17, 39, .74);
  border: 1px solid rgba(255,255,255,.13);
  border-radius: 4px;
  backdrop-filter: blur(10px);
  font-family: Consolas, "Courier New", monospace;
  font-size: 11px;
  letter-spacing: .16em;
}

.visual-label span {
  margin-right: 8px;
  color: var(--orange);
}

.visual-label-a { left: 6%; top: 24%; }
.visual-label-b { right: 2%; top: 39%; }
.visual-label-c { left: 16%; bottom: 16%; }

.proof-strip {
  position: relative;
  z-index: 4;
  min-height: 112px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid rgba(255,255,255,.12);
  border-bottom: 1px solid rgba(255,255,255,.12);
}

.proof-strip > div {
  padding: 24px 26px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 2px;
  border-right: 1px solid rgba(255,255,255,.1);
}

.proof-strip > div:last-child {
  border-right: 0;
}

.proof-strip strong {
  font-size: 22px;
}

.proof-strip span {
  color: rgba(255,255,255,.56);
  font-size: 14px;
}

.section {
  padding: 112px 0;
}

.intro {
  background: var(--white);
}

.intro-layout {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
  gap: 110px;
}

.section-heading h2,
.platform-copy h2,
.validation-copy h2,
.contact-card h2 {
  font-size: clamp(38px, 4vw, 58px);
}

.intro-copy {
  color: var(--slate);
  font-size: 20px;
}

.intro-copy p {
  margin: 0 0 24px;
}

.focus {
  background: var(--paper);
}

.section-heading-wide {
  margin-bottom: 56px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, .75fr);
  align-items: end;
  gap: 80px;
}

.section-heading-wide > p {
  margin: 0 0 5px;
  color: var(--slate);
  font-size: 18px;
}

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

.focus-card {
  position: relative;
  min-height: 320px;
  padding: 34px;
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--line);
  border-top: 4px solid var(--navy);
  box-shadow: 0 8px 24px rgba(14, 27, 61, .05);
  transition: transform 180ms ease, box-shadow 180ms ease, border-top-color 180ms ease;
}

.focus-card:nth-child(1) { border-top-color: var(--orange); }
.focus-card:nth-child(3) { border-top-color: var(--teal); }

.focus-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow);
}

.card-number {
  color: var(--muted);
  font-family: Consolas, "Courier New", monospace;
  font-weight: 700;
  letter-spacing: .2em;
}

.card-icon {
  width: 72px;
  height: 72px;
  margin: 42px 0 24px;
  display: grid;
  place-items: center;
  color: var(--navy);
  background: var(--paper);
  border-radius: 50%;
}

.card-icon svg {
  width: 40px;
  height: 40px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2.2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.focus-card h3,
.platform-step h3 {
  margin: 0;
  font-size: 27px;
}

.focus-card p {
  max-width: 440px;
  margin: 10px 0 0;
  color: var(--slate);
  font-size: 17px;
}

.platform {
  color: var(--white);
  background: var(--navy);
}

.platform-layout {
  display: grid;
  grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr);
  gap: 110px;
  align-items: start;
}

.platform-copy {
  position: sticky;
  top: 125px;
}

.platform-copy > p:not(.eyebrow) {
  margin: 26px 0 34px;
  color: rgba(255,255,255,.66);
  font-size: 19px;
}

.platform-note {
  padding: 24px;
  color: rgba(255,255,255,.72);
  background: rgba(255,255,255,.045);
  border-left: 3px solid var(--orange);
}

.platform-note span {
  display: block;
  margin-bottom: 8px;
  color: var(--orange);
  font-family: Consolas, "Courier New", monospace;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .22em;
}

.platform-steps {
  display: grid;
  gap: 14px;
}

.platform-step {
  min-height: 142px;
  padding: 28px 30px;
  display: grid;
  grid-template-columns: 68px 1fr;
  align-items: start;
  gap: 18px;
  background: rgba(255,255,255,.045);
  border: 1px solid rgba(255,255,255,.08);
  transition: background 160ms ease, transform 160ms ease;
}

.platform-step:hover {
  transform: translateX(6px);
  background: rgba(255,255,255,.075);
}

.platform-step > span {
  color: var(--orange);
  font-family: Consolas, "Courier New", monospace;
  font-weight: 700;
  letter-spacing: .12em;
}

.platform-step p {
  margin: 7px 0 0;
  color: rgba(255,255,255,.6);
}

.validation {
  background: var(--white);
}

.validation-card {
  min-height: 500px;
  padding: 54px;
  display: grid;
  grid-template-columns: minmax(280px, .75fr) minmax(0, 1.25fr);
  align-items: center;
  gap: 70px;
  overflow: hidden;
  background: var(--paper);
  border: 1px solid var(--line);
}

.validation-image {
  position: relative;
  min-height: 360px;
  display: grid;
  place-items: center;
}

.validation-image::before,
.validation-image::after,
.module-ring {
  content: "";
  position: absolute;
  border: 1px solid rgba(14, 27, 61, .12);
  border-radius: 50%;
}

.validation-image::before { width: 320px; height: 320px; }
.validation-image::after { width: 250px; height: 250px; }
.module-ring { width: 180px; height: 180px; border-color: rgba(38, 183, 172, .45); }

.validation-image img {
  position: relative;
  z-index: 2;
  width: 230px;
  filter: drop-shadow(0 28px 30px rgba(14, 27, 61, .2));
}

.validation-copy p:last-child {
  max-width: 700px;
  margin: 26px 0 0;
  color: var(--slate);
  font-size: 18px;
}

.contact {
  padding-top: 0;
  background: var(--white);
}

.contact-card {
  padding: 62px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 70px;
  color: var(--white);
  background:
    linear-gradient(120deg, rgba(255,107,53,.11), transparent 45%),
    var(--navy-deep);
  border-top: 4px solid var(--orange);
}

.contact-card p:not(.eyebrow) {
  max-width: 760px;
  margin: 22px 0 0;
  color: rgba(255,255,255,.65);
  font-size: 18px;
}

.button-light {
  white-space: nowrap;
  color: var(--navy);
  background: var(--white);
}

.button-light:hover,
.button-light:focus-visible {
  color: var(--white);
  background: var(--orange);
}

.site-footer {
  color: var(--white);
  background: var(--navy-deep);
  border-bottom: 5px solid var(--orange);
}

.footer-inner {
  min-height: 150px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  border-top: 1px solid rgba(255,255,255,.08);
}

.footer-inner > img {
  width: 210px;
}

.footer-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px 26px;
  color: rgba(255,255,255,.48);
  font-family: Consolas, "Courier New", monospace;
  font-size: 12px;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 650ms ease, transform 650ms ease;
}

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

@keyframes float {
  0%, 100% { transform: translateY(0) rotate(-1deg); }
  50% { transform: translateY(-14px) rotate(1deg); }
}

@media (max-width: 980px) {
  .header-inner {
    grid-template-columns: 1fr auto;
  }

  .desktop-nav {
    display: none;
  }

  .hero {
    min-height: auto;
  }

  .hero-layout {
    grid-template-columns: 1fr;
    padding-top: 145px;
    padding-bottom: 40px;
  }

  .hero-copy {
    max-width: 800px;
  }

  .hero-visual {
    min-height: 460px;
  }

  .tire-image {
    width: min(78vw, 590px);
  }

  .proof-strip {
    grid-template-columns: repeat(2, 1fr);
    margin-bottom: 48px;
  }

  .proof-strip > div:nth-child(2) {
    border-right: 0;
  }

  .proof-strip > div:nth-child(-n+2) {
    border-bottom: 1px solid rgba(255,255,255,.1);
  }

  .intro-layout,
  .section-heading-wide,
  .platform-layout,
  .validation-card,
  .contact-card {
    grid-template-columns: 1fr;
    gap: 44px;
  }

  .intro-layout {
    gap: 36px;
  }

  .section-heading-wide {
    align-items: start;
  }

  .platform-copy {
    position: static;
  }

  .contact-card {
    align-items: start;
  }

  .button-light {
    justify-self: start;
  }
}

@media (max-width: 680px) {
  .container {
    width: min(calc(100% - 28px), var(--container));
  }

  .header-inner {
    min-height: 68px;
    gap: 14px;
  }

  .brand {
    width: 170px;
  }

  .header-contact {
    padding: 8px 11px;
    font-size: 12px;
  }

  .hero-layout {
    padding-top: 122px;
    gap: 8px;
  }

  .hero h1 {
    font-size: clamp(43px, 13vw, 62px);
  }

  .hero-text {
    font-size: 17px;
  }

  .hero-actions {
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .hero-visual {
    min-height: 370px;
  }

  .orbit-one { width: 310px; height: 310px; }
  .orbit-two { width: 370px; height: 370px; }
  .visual-label { font-size: 9px; }
  .visual-label-a { left: 0; top: 24%; }
  .visual-label-b { right: 0; top: 42%; }
  .visual-label-c { left: 8%; bottom: 11%; }

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

  .proof-strip > div,
  .proof-strip > div:nth-child(2) {
    border-right: 0;
    border-bottom: 1px solid rgba(255,255,255,.1);
  }

  .proof-strip > div:last-child {
    border-bottom: 0;
  }

  .section {
    padding: 78px 0;
  }

  .section-heading h2,
  .platform-copy h2,
  .validation-copy h2,
  .contact-card h2 {
    font-size: 38px;
  }

  .intro-copy {
    font-size: 18px;
  }

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

  .focus-card {
    min-height: 290px;
    padding: 28px;
  }

  .card-icon {
    margin-top: 34px;
  }

  .platform-step {
    grid-template-columns: 48px 1fr;
    padding: 24px 20px;
  }

  .validation-card,
  .contact-card {
    padding: 32px 24px;
  }

  .validation-image {
    min-height: 300px;
  }

  .validation-image::before { width: 270px; height: 270px; }
  .validation-image::after { width: 210px; height: 210px; }
  .module-ring { width: 150px; height: 150px; }

  .footer-inner {
    padding: 38px 0;
    flex-direction: column;
    align-items: flex-start;
  }

  .footer-meta {
    justify-content: flex-start;
  }
}

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

.focus-card-link {
  display: block;
  cursor: pointer;
}

.card-link-label {
  position: absolute;
  right: 34px;
  bottom: 30px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--orange);
  font-family: Consolas, "Courier New", monospace;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.focus-card-link:hover .card-link-label span,
.focus-card-link:focus-visible .card-link-label span {
  transform: translateX(4px);
}

.card-link-label span {
  transition: transform 160ms ease;
}