:root {
  --petrol: #143846;
  --deep: #0d2f3d;
  --deep-2: #08232d;
  --teal: #16857f;
  --teal-light: #68b7ae;
  --gold: #d4b04c;
  --ivory: #f7f7f3;
  --white: #ffffff;
  --ink: #172c34;
  --text: #34454c;
  --muted: #718087;
  --line: rgba(13, 47, 61, 0.14);
  --line-dark: rgba(255, 255, 255, 0.16);
  --shadow: 0 22px 70px rgba(6, 31, 40, 0.12);
  --max: 1240px;
  --radius: 2px;
  --header-height: 84px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 24px);
}

body {
  margin: 0;
  background: var(--ivory);
  color: var(--text);
  font-family: "Aptos", "Segoe UI Variable", "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 17px;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body.menu-open {
  overflow: hidden;
}

a {
  color: inherit;
}

button,
input,
textarea {
  font: inherit;
}

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

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1,
h2,
h3 {
  color: var(--deep);
  font-weight: 520;
  letter-spacing: -0.035em;
  line-height: 1.08;
}

h1 {
  max-width: 900px;
  margin-bottom: 30px;
  color: var(--white);
  font-size: clamp(3rem, 5.5vw, 5.9rem);
}

h1 span {
  color: var(--teal-light);
}

h2 {
  margin-bottom: 28px;
  font-size: clamp(2.35rem, 4vw, 4.4rem);
}

h3 {
  margin-bottom: 12px;
  font-size: 1.4rem;
}

p {
  margin-bottom: 24px;
}

.container {
  width: min(calc(100% - 48px), var(--max));
  margin-inline: auto;
}

.section {
  position: relative;
  padding: clamp(96px, 11vw, 168px) 0;
}

.section-dark {
  color: rgba(255, 255, 255, 0.76);
  background: var(--deep);
}

.eyebrow {
  display: flex;
  gap: 14px;
  align-items: center;
  margin-bottom: 28px;
  color: var(--teal-light);
  font-size: 0.77rem;
  font-weight: 720;
  letter-spacing: 0.18em;
  line-height: 1.2;
  text-transform: uppercase;
}

.eyebrow::before {
  width: 44px;
  height: 1px;
  background: currentColor;
  content: "";
}

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

.section-heading {
  max-width: 920px;
}

.section-heading.narrow {
  max-width: 980px;
}

.skip-link {
  position: fixed;
  z-index: 2000;
  top: 12px;
  left: 12px;
  padding: 10px 14px;
  transform: translateY(-150%);
  background: var(--gold);
  color: var(--deep);
  text-decoration: none;
}

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

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
}

.site-header {
  position: fixed;
  z-index: 1000;
  top: 0;
  right: 0;
  left: 0;
  height: var(--header-height);
  border-bottom: 1px solid transparent;
  transition: background 180ms ease, border-color 180ms ease, backdrop-filter 180ms ease;
}

.site-header.scrolled {
  border-color: rgba(255, 255, 255, 0.09);
  background: rgba(8, 35, 45, 0.9);
  backdrop-filter: blur(16px);
}

.header-inner {
  display: flex;
  height: 100%;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: inline-flex;
  gap: 15px;
  align-items: center;
  color: var(--white);
  text-decoration: none;
}

.brand-name {
  font-size: 0.92rem;
  font-weight: 760;
  letter-spacing: 0.17em;
}

.brand-rule {
  width: 36px;
  height: 1px;
  background: var(--gold);
}

.main-nav {
  display: flex;
  gap: 32px;
  align-items: center;
}

.main-nav a {
  position: relative;
  color: rgba(255, 255, 255, 0.78);
  font-size: 0.9rem;
  font-weight: 560;
  text-decoration: none;
  transition: color 160ms ease;
}

.main-nav a:not(.nav-cta)::after {
  position: absolute;
  right: 0;
  bottom: -9px;
  left: 0;
  height: 1px;
  transform: scaleX(0);
  transform-origin: left;
  background: var(--gold);
  content: "";
  transition: transform 160ms ease;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--white);
}

.main-nav a:hover::after,
.main-nav a.active::after {
  transform: scaleX(1);
}

.nav-cta {
  padding: 11px 18px;
  border: 1px solid rgba(255, 255, 255, 0.32);
}

.nav-cta:hover {
  border-color: var(--gold);
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 0;
  background: transparent;
  cursor: pointer;
}

.menu-toggle span:not(.sr-only) {
  display: block;
  width: 25px;
  height: 1px;
  margin: 6px auto;
  background: var(--white);
}

.hero {
  position: relative;
  min-height: 100svh;
  padding: calc(var(--header-height) + 76px) 0 100px;
  overflow: hidden;
}

.hero::before {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, transparent 49.9%, rgba(255, 255, 255, 0.045) 50%, transparent 50.1%),
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 100% 100%, 100% 76px;
  content: "";
  pointer-events: none;
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  min-height: calc(100svh - var(--header-height) - 176px);
  grid-template-columns: minmax(0, 1.22fr) minmax(380px, 0.78fr);
  gap: 64px;
  align-items: center;
}

.hero-lead {
  max-width: 760px;
  margin-bottom: 38px;
  color: rgba(255, 255, 255, 0.72);
  font-size: clamp(1.1rem, 1.5vw, 1.32rem);
}

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

.button {
  display: inline-flex;
  min-height: 52px;
  padding: 13px 22px;
  border: 1px solid transparent;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 0.94rem;
  font-weight: 650;
  text-decoration: none;
  transition: transform 160ms ease, background 160ms ease, border-color 160ms ease, color 160ms ease;
}

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

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

.button-primary:hover {
  background: #11726d;
}

.button-ghost {
  border-color: rgba(255, 255, 255, 0.24);
  color: var(--white);
}

.button-ghost:hover {
  border-color: var(--gold);
}

.hero-principle {
  margin: 0;
  color: rgba(255, 255, 255, 0.55);
  font-size: 0.92rem;
}

.hero-system {
  justify-self: end;
  width: min(100%, 590px);
  opacity: 0.96;
}

.system-orbit {
  fill: none;
  stroke: rgba(255, 255, 255, 0.12);
  stroke-width: 1;
}

.orbit-two {
  stroke-dasharray: 3 11;
}

.orbit-three {
  stroke: rgba(212, 176, 76, 0.35);
}

.system-path {
  fill: none;
  filter: url(#softGlow);
  stroke: url(#lineGradient);
  stroke-linecap: round;
  stroke-width: 2;
}

.system-path-muted {
  opacity: 0.45;
}

.system-axis {
  fill: none;
  stroke: rgba(255, 255, 255, 0.13);
  stroke-dasharray: 2 8;
}

.node circle {
  fill: var(--deep);
  stroke: rgba(104, 183, 174, 0.8);
  stroke-width: 1.5;
}

.node-main circle {
  fill: rgba(22, 133, 127, 0.16);
  stroke: var(--gold);
}

.node text {
  fill: rgba(255, 255, 255, 0.72);
  font-size: 8px;
  font-weight: 720;
  letter-spacing: 0.08em;
  text-anchor: middle;
}

.node-main text {
  fill: var(--white);
  font-size: 11px;
}

.micro-node {
  fill: var(--gold);
  filter: url(#softGlow);
}

.section-problem {
  background: var(--ivory);
}

.section-problem .section-heading > p:last-child {
  max-width: 790px;
  font-size: 1.14rem;
}

.definition-card {
  display: grid;
  margin: 62px 0 44px;
  padding: 36px 40px;
  border-top: 1px solid var(--teal);
  border-bottom: 1px solid var(--line);
  grid-template-columns: 260px 1fr;
  gap: 44px;
}

.definition-label {
  margin: 0;
  color: var(--teal);
  font-size: 0.82rem;
  font-weight: 760;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.definition-card p:last-child {
  margin: 0;
  color: var(--deep);
  font-size: clamp(1.2rem, 2vw, 1.65rem);
  line-height: 1.45;
}

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

.consequence {
  min-height: 260px;
  padding: 34px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.consequence > span {
  display: block;
  margin-bottom: 68px;
  color: var(--teal);
  font-size: 0.75rem;
  font-weight: 760;
}

.consequence p {
  margin: 0;
  color: var(--muted);
}

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

.split-heading {
  display: grid;
  grid-template-columns: 1.3fr 0.7fr;
  gap: 100px;
  align-items: end;
}

.split-heading > p {
  margin-bottom: 36px;
  padding-left: 32px;
  border-left: 1px solid var(--gold);
  font-size: 1.08rem;
}

.value-chain {
  display: grid;
  margin-top: 76px;
  grid-template-columns: repeat(9, auto);
  align-items: stretch;
  justify-content: space-between;
}

.chain-item {
  display: flex;
  min-width: 150px;
  min-height: 170px;
  padding: 22px;
  border: 1px solid var(--line);
  flex-direction: column;
  justify-content: space-between;
}

.chain-item span {
  color: var(--teal);
  font-size: 0.75rem;
  font-weight: 760;
}

.chain-item strong {
  color: var(--deep);
  font-size: 1rem;
  line-height: 1.3;
}

.chain-result {
  border-color: var(--teal);
  background: var(--deep);
}

.chain-result strong {
  color: var(--white);
}

.chain-arrow {
  display: flex;
  padding: 0 8px;
  align-items: center;
  color: var(--gold);
}

.section-toi {
  background: var(--deep);
  color: rgba(255, 255, 255, 0.7);
}

.section-toi::before {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 25% 100%;
  content: "";
  pointer-events: none;
}

.section-toi .container {
  position: relative;
}

.section-toi h2,
.section-toi h3 {
  color: var(--white);
}

.toi-intro {
  max-width: 920px;
}

.toi-intro h2 {
  margin-bottom: 16px;
}

.toi-subtitle {
  max-width: 780px;
  color: var(--teal-light);
  font-size: clamp(1.3rem, 2.2vw, 1.85rem);
  line-height: 1.42;
}

.capability-grid {
  display: grid;
  margin-top: 64px;
  grid-template-columns: repeat(2, 1fr);
  border-top: 1px solid var(--line-dark);
  border-left: 1px solid var(--line-dark);
}

.capability {
  min-height: 280px;
  padding: 38px;
  border-right: 1px solid var(--line-dark);
  border-bottom: 1px solid var(--line-dark);
}

.capability-number {
  display: block;
  margin-bottom: 72px;
  color: var(--gold);
  font-size: 0.75rem;
  font-weight: 760;
}

.capability p {
  max-width: 470px;
  margin: 0;
}

.toi-quote {
  max-width: 920px;
  margin: 80px 0 0 auto;
  padding: 0 0 0 36px;
  border-left: 2px solid var(--gold);
  color: var(--white);
  font-size: clamp(1.4rem, 2.5vw, 2.25rem);
  font-weight: 420;
  line-height: 1.35;
}

.section-method {
  background: var(--ivory);
}

.method-list {
  margin-top: 68px;
  border-top: 1px solid var(--line);
}

.method-step {
  display: grid;
  min-height: 180px;
  padding: 36px 0;
  border-bottom: 1px solid var(--line);
  grid-template-columns: 120px 1fr;
  align-items: start;
}

.method-step > span {
  color: var(--teal);
  font-size: 0.82rem;
  font-weight: 760;
}

.method-step div {
  display: grid;
  grid-template-columns: 0.5fr 1fr;
  gap: 70px;
}

.method-step h3 {
  margin: 0;
  font-size: clamp(1.6rem, 2.5vw, 2.5rem);
}

.method-step p {
  max-width: 620px;
  margin: 0;
}

.method-note {
  max-width: 900px;
  margin: 66px 0 0 auto;
  padding-left: 34px;
  border-left: 1px solid var(--gold);
  color: var(--deep);
  font-size: 1.25rem;
}

.section-difference {
  background: var(--petrol);
  color: rgba(255, 255, 255, 0.73);
}

.section-difference h2 {
  color: var(--white);
}

.difference-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 100px;
}

.difference-copy p:last-child {
  max-width: 650px;
}

.difference-list {
  border-top: 1px solid var(--line-dark);
}

.difference-list div {
  display: grid;
  min-height: 100px;
  padding: 26px 0;
  border-bottom: 1px solid var(--line-dark);
  grid-template-columns: 70px 1fr;
  align-items: center;
}

.difference-list span {
  color: var(--gold);
  font-size: 0.75rem;
  font-weight: 760;
}

.difference-list strong {
  color: var(--white);
  font-size: 1.04rem;
  font-weight: 560;
}

.difference-statement {
  max-width: 980px;
  margin: 100px 0 0 auto;
  padding-top: 34px;
  border-top: 1px solid var(--gold);
  color: var(--white);
  font-size: clamp(1.6rem, 3vw, 2.7rem);
  line-height: 1.35;
}

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

.firm-grid {
  display: grid;
  grid-template-columns: 0.72fr 1.28fr;
  gap: 100px;
  align-items: center;
}

.firm-marker {
  position: relative;
  display: grid;
  width: min(100%, 410px);
  aspect-ratio: 1;
  border: 1px solid var(--line);
  place-items: center;
}

.firm-marker::before,
.firm-marker::after {
  position: absolute;
  background: var(--line);
  content: "";
}

.firm-marker::before {
  width: 1px;
  height: 100%;
}

.firm-marker::after {
  width: 100%;
  height: 1px;
}

.firm-marker span {
  position: absolute;
  color: var(--deep);
  font-size: clamp(5rem, 10vw, 9rem);
  font-weight: 300;
  line-height: 1;
}

.firm-marker span:first-child {
  transform: translate(-29%, -10%);
}

.firm-marker span:last-child {
  transform: translate(29%, 10%);
  color: var(--teal);
}

.firm-copy {
  max-width: 720px;
}

.section-contact {
  background: var(--deep-2);
  color: rgba(255, 255, 255, 0.72);
}

.section-contact h2 {
  color: var(--white);
}

.contact-grid {
  display: grid;
  grid-template-columns: 0.88fr 1.12fr;
  gap: 100px;
  align-items: start;
}

.contact-copy {
  position: sticky;
  top: calc(var(--header-height) + 40px);
}

.contact-form {
  padding: 44px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  background: rgba(255, 255, 255, 0.025);
}

.field-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.contact-form label {
  display: block;
  margin-bottom: 24px;
}

.contact-form label > span {
  display: block;
  margin-bottom: 9px;
  color: rgba(255, 255, 255, 0.72);
  font-size: 0.84rem;
  font-weight: 600;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  border: 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 0;
  outline: none;
  background: transparent;
  color: var(--white);
  transition: border-color 160ms ease, background 160ms ease;
}

.contact-form input {
  height: 46px;
}

.contact-form textarea {
  padding: 10px 0;
  resize: vertical;
}

.contact-form input:focus,
.contact-form textarea:focus {
  border-color: var(--teal-light);
}

.contact-form .consent {
  display: flex;
  gap: 12px;
  align-items: flex-start;
}

.contact-form .consent input {
  width: 17px;
  height: 17px;
  margin-top: 3px;
  accent-color: var(--teal);
}

.contact-form .consent span {
  margin: 0;
  color: rgba(255, 255, 255, 0.58);
  font-size: 0.78rem;
}

.form-submit {
  width: 100%;
  margin-top: 8px;
}

.form-status,
.form-note {
  margin: 14px 0 0;
  font-size: 0.78rem;
}

.form-status {
  color: var(--teal-light);
}

.form-note {
  color: rgba(255, 255, 255, 0.42);
}

.site-footer {
  padding: 54px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.09);
  background: var(--deep-2);
  color: rgba(255, 255, 255, 0.52);
  font-size: 0.82rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr auto;
  gap: 50px;
}

.site-footer p {
  margin: 0 0 5px;
}

.footer-brand {
  color: var(--white);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.site-footer nav {
  display: flex;
  gap: 24px;
  align-items: flex-start;
}

.site-footer a {
  text-decoration: none;
}

.site-footer a:hover {
  color: var(--white);
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 650ms ease, transform 650ms ease;
}

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

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

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }

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

@media (max-width: 1100px) {
  .main-nav {
    gap: 20px;
  }

  .hero-grid {
    grid-template-columns: 1fr 0.72fr;
    gap: 30px;
  }

  .value-chain {
    grid-template-columns: repeat(5, 1fr);
    gap: 12px;
  }

  .chain-arrow {
    display: none;
  }

  .difference-grid,
  .contact-grid {
    gap: 60px;
  }
}

@media (max-width: 900px) {
  :root {
    --header-height: 72px;
  }

  .menu-toggle {
    display: block;
  }

  .main-nav {
    position: fixed;
    inset: var(--header-height) 0 0;
    display: flex;
    padding: 46px 24px;
    transform: translateX(100%);
    background: rgba(8, 35, 45, 0.985);
    flex-direction: column;
    align-items: flex-start;
    transition: transform 220ms ease;
  }

  .main-nav.open {
    transform: translateX(0);
  }

  .main-nav a {
    font-size: 1.25rem;
  }

  .nav-cta {
    margin-top: 16px;
  }

  .hero {
    min-height: auto;
  }

  .hero-grid {
    min-height: auto;
    grid-template-columns: 1fr;
  }

  .hero-system {
    width: min(100%, 510px);
    margin-inline: auto;
  }

  .split-heading,
  .firm-grid,
  .difference-grid,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 54px;
  }

  .split-heading > p {
    margin: 0;
  }

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

  .chain-result {
    grid-column: span 2;
  }

  .contact-copy {
    position: static;
  }

  .firm-marker {
    max-width: 360px;
  }

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

  .site-footer nav {
    grid-column: 1 / -1;
  }
}

@media (max-width: 680px) {
  body {
    font-size: 16px;
  }

  .container {
    width: min(calc(100% - 32px), var(--max));
  }

  .section {
    padding: 86px 0;
  }

  h1 {
    font-size: clamp(2.65rem, 12vw, 4.3rem);
  }

  h2 {
    font-size: clamp(2.1rem, 9vw, 3.4rem);
  }

  .hero {
    padding-top: calc(var(--header-height) + 56px);
  }

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

  .button {
    width: 100%;
  }

  .hero-system {
    margin-top: 20px;
  }

  .definition-card {
    padding: 28px 0;
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .consequence-grid,
  .capability-grid {
    grid-template-columns: 1fr;
  }

  .consequence,
  .capability {
    min-height: auto;
  }

  .consequence > span,
  .capability-number {
    margin-bottom: 38px;
  }

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

  .chain-result {
    grid-column: auto;
  }

  .method-step {
    grid-template-columns: 48px 1fr;
  }

  .method-step div {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .contact-form {
    padding: 28px 22px;
  }

  .field-row {
    grid-template-columns: 1fr;
    gap: 0;
  }

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

  .site-footer nav {
    grid-column: auto;
    flex-direction: column;
    gap: 8px;
  }
}