/* Self-hosted fonts (Google Fonts, SIL OFL) */
@font-face {
  font-family: "Instrument Serif";
  font-style: italic;
  font-weight: 400;
  font-display: swap;
  src: url("./assets/fonts/instrument-serif-400-italic.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: "Instrument Serif";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("./assets/fonts/instrument-serif-400-normal.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: "Manrope";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("./assets/fonts/manrope-400-normal.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: "Manrope";
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("./assets/fonts/manrope-500-normal.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: "Manrope";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("./assets/fonts/manrope-600-normal.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

:root {
  --paper: #f2f5f8;
  --paper-deep: #e6edf3;
  --white: #fff;
  --ink: #071725;
  --navy: #021a30;
  --muted: #596875;
  --blue: #0b5bd6;
  --blue-bright: #4d96ff;
  --blue-pale: #e7f1ff;
  --line: rgba(7, 23, 37, 0.17);
  --serif: "Instrument Serif", Georgia, serif;
  --sans: "Manrope", Helvetica, Arial, sans-serif;
  --pad: clamp(1.2rem, 4vw, 4.75rem);
  --section-y: clamp(7rem, 11vw, 12rem);
  --header-h: 6rem;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-h);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  overflow-x: hidden;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

@supports (overflow: clip) {
  body { overflow-x: clip; }
}

body.menu-open { overflow: hidden; }

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

h1,
h2,
h3,
p,
ul,
dl,
dd {
  margin: 0;
}

ul {
  padding: 0;
  list-style: none;
}

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

button,
input,
select,
textarea {
  color: inherit;
  font: inherit;
}

button {
  padding: 0;
  border: 0;
  background: none;
  cursor: pointer;
}

svg,
canvas {
  display: block;
}

:focus-visible {
  outline: 2px solid currentColor;
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  top: 1rem;
  left: 1rem;
  z-index: 1000;
  padding: 0.75rem 1rem;
  transform: translateY(-180%);
  background: var(--ink);
  color: var(--white);
  font-size: 0.95rem;
  transition: transform 0.2s;
}

.skip-link:focus { transform: none; }

.symbol-sheet {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}

.section-pad {
  padding: var(--section-y) var(--pad);
}

.display {
  font-family: var(--serif);
  font-size: clamp(4rem, 7.4vw, 8.2rem);
  font-weight: 400;
  line-height: 0.88;
  letter-spacing: -0.055em;
}

.display em {
  color: var(--blue);
  font-weight: 400;
}

.section-rail {
  display: grid;
  grid-template-columns: 4.5rem 1fr auto;
  align-items: center;
  gap: 1.2rem;
  padding-bottom: 1.3rem;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.section-rail > span {
  color: var(--blue);
}

.section-rail > p:first-of-type {
  display: flex;
  align-items: center;
  gap: 1.2rem;
}

.section-rail > p:first-of-type::before {
  width: 2.5rem;
  height: 1px;
  background: currentColor;
  content: "";
}

.section-rail--light {
  border-color: rgba(255, 255, 255, 0.24);
  color: rgba(255, 255, 255, 0.78);
}

.section-rail--light > span { color: var(--blue-pale); }

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

.js .reveal {
  opacity: 0;
  transform: translateY(1.8rem);
  transition: opacity 0.85s var(--ease), transform 0.85s var(--ease);
}

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

/* Header */
.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  min-height: var(--header-h);
  padding: 0 var(--pad);
  border-bottom: 1px solid transparent;
  transition: min-height 0.45s var(--ease), background 0.35s, border-color 0.35s;
}

.site-header.is-scrolled {
  min-height: 4.8rem;
  border-color: var(--line);
  background: rgba(242, 245, 248, 0.9);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  justify-self: start;
  gap: 0.7rem;
  width: max-content;
}

.brand__mark {
  width: 2.3rem;
  height: 2.3rem;
  color: var(--blue);
  stroke: currentColor;
  stroke-width: 1.1;
}

.brand__mark .orbit-mark__node {
  fill: var(--blue);
  stroke: none;
}

.brand__name {
  font-size: 0.9rem;
  font-weight: 600;
  line-height: 0.9;
  letter-spacing: -0.04em;
  text-transform: uppercase;
}

.desktop-nav {
  display: flex;
  align-items: center;
  gap: 2.5rem;
  font-size: 0.9rem;
}

.desktop-nav a {
  position: relative;
  padding: 0.8rem 0;
}

.desktop-nav a::after {
  position: absolute;
  right: 0;
  bottom: 0.45rem;
  left: 0;
  height: 1px;
  transform: scaleX(0);
  transform-origin: right;
  background: currentColor;
  content: "";
  transition: transform 0.35s var(--ease);
}

.desktop-nav a:hover::after,
.desktop-nav a[aria-current="true"]::after {
  transform: scaleX(1);
  transform-origin: left;
}

.header-cta {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  justify-self: end;
  gap: 2.2rem;
  min-width: 11rem;
  padding: 0.82rem 1rem;
  border: 1px solid var(--ink);
  border-radius: 100vw;
  font-size: 0.9rem;
  transition: background 0.3s, color 0.3s, transform 0.3s var(--ease);
}

.header-cta:hover,
.header-cta:focus-visible {
  transform: translateY(-2px);
  background: var(--ink);
  color: var(--white);
}

.menu-toggle {
  display: none;
  justify-self: end;
  width: 2rem;
  height: 2rem;
}

.menu-toggle span {
  display: block;
  width: 1.65rem;
  height: 1px;
  margin: 0.42rem auto;
  background: currentColor;
  transition: transform 0.35s var(--ease);
}

.menu-toggle[aria-expanded="true"] span:first-child { transform: translateY(0.22rem) rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:last-child { transform: translateY(-0.22rem) rotate(-45deg); }

.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 90;
  display: flex;
  visibility: hidden;
  flex-direction: column;
  justify-content: space-between;
  padding: calc(var(--header-h) + 2rem) var(--pad) 2rem;
  transform: translateY(-2rem);
  opacity: 0;
  background: var(--paper);
  pointer-events: none;
  transition: opacity 0.35s, transform 0.5s var(--ease), visibility 0.35s;
}

.mobile-menu.is-open {
  visibility: visible;
  transform: none;
  opacity: 1;
  pointer-events: auto;
}

.mobile-menu nav {
  display: flex;
  flex-direction: column;
}

.mobile-menu nav a {
  display: grid;
  grid-template-columns: 2rem 1fr;
  align-items: start;
  padding: 0.6rem 0;
  border-bottom: 1px solid transparent;
  font-family: var(--serif);
  font-size: clamp(3rem, 12vw, 5rem);
  line-height: 0.9;
  letter-spacing: -0.04em;
}

.mobile-menu nav a:focus-visible { border-color: currentColor; }
.mobile-menu nav span { color: var(--blue); font-family: var(--sans); font-size: 0.9rem; letter-spacing: 0.04em; }

.mobile-menu__footer {
  display: flex;
  justify-content: space-between;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  font-size: 0.9rem;
}

/* Hero */
.hero {
  position: relative;
  display: flex;
  min-height: 100svh;
  flex-direction: column;
  padding: calc(var(--header-h) + 1rem) var(--pad) 2rem;
  overflow: hidden;
}

.hero::before {
  position: absolute;
  inset: var(--header-h) var(--pad) auto;
  height: 1px;
  transform: scaleX(0);
  transform-origin: left;
  background: var(--line);
  content: "";
  transition: transform 1.2s var(--ease) 0.35s;
}

.is-loaded .hero::before { transform: scaleX(1); }

.hero__meta {
  position: relative;
  z-index: 3;
  display: flex;
  justify-content: space-between;
  color: var(--muted);
  font-size: 0.9rem;
  letter-spacing: 0.035em;
  text-transform: uppercase;
}

.hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(24rem, 0.75fr);
  align-items: center;
  flex: 1;
  gap: 2rem;
  padding: 2.5rem 0 1rem;
}

.hero__copy {
  position: relative;
  z-index: 2;
}

.hero__title {
  font-family: var(--serif);
  font-size: clamp(5.8rem, 10.2vw, 11.2rem);
  font-weight: 400;
  line-height: 0.77;
  letter-spacing: -0.063em;
}

.hero__title span { display: block; width: max-content; max-width: 100%; }
.hero__title span:nth-child(2) { margin: 0.08em 0 0 8%; }
.hero__title em { color: var(--blue); font-weight: 400; }

.hero__dek {
  max-width: 39rem;
  margin: clamp(3rem, 6vh, 5rem) 0 0 18%;
  font-size: clamp(1.05rem, 1.35vw, 1.28rem);
  line-height: 1.65;
}

.hero__instrument {
  position: relative;
  z-index: 1;
  width: min(36vw, 40rem, calc(100svh - 17rem));
  min-width: min(24rem, 100%);
  aspect-ratio: 1;
  justify-self: end;
}

.hero__instrument::before,
.hero__instrument::after {
  position: absolute;
  z-index: -1;
  background: rgba(11, 91, 214, 0.15);
  content: "";
}

.hero__instrument::before { top: 0; bottom: 0; left: 50%; width: 1px; }
.hero__instrument::after { top: 50%; right: 0; left: 0; height: 1px; }

.hero__instrument canvas,
.instrument-frame canvas {
  width: 100%;
  height: 100%;
}

.orbital-fallback {
  position: absolute;
  inset: 10%;
  opacity: 0.8;
  transition: opacity 0.25s;
}

.js .orbital-fallback { opacity: 0; pointer-events: none; }

.orbital-fallback span {
  position: absolute;
  inset: 18%;
  border: 1px solid var(--blue);
  border-radius: 50%;
}

.orbital-fallback span:nth-child(1) { transform: rotate(14deg) scaleX(1.55); }
.orbital-fallback span:nth-child(2) { transform: rotate(74deg) scaleX(1.55); }
.orbital-fallback span:nth-child(3) { transform: rotate(134deg) scaleX(1.55); }
.orbital-fallback i { position: absolute; top: 50%; left: 50%; width: 8%; aspect-ratio: 1; transform: translate(-50%, -50%); border-radius: 50%; background: var(--blue); box-shadow: 0 0 2rem rgba(11, 91, 214, 0.45); }

.instrument-label,
.instrument-index,
.instrument-frame__label {
  position: absolute;
  color: var(--muted);
  font-size: 0.9rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.instrument-label::before {
  display: inline-block;
  width: 0.35rem;
  height: 0.35rem;
  margin-right: 0.45rem;
  border: 1px solid currentColor;
  border-radius: 50%;
  content: "";
}

.instrument-label--commerce { top: 7%; left: 7%; }
.instrument-label--demand { top: 50%; right: 1%; }
.instrument-label--intelligence { bottom: 5%; left: 12%; }
.instrument-index { top: 7%; right: 2%; color: var(--blue); }

.hero__footer {
  position: relative;
  z-index: 3;
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  align-items: end;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
}

.button-link {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  width: max-content;
  min-width: 11rem;
  padding: 0.95rem 1rem;
  border-radius: 100vw;
  background: var(--blue);
  color: var(--white);
  font-size: 0.9rem;
  transition: transform 0.3s var(--ease), background 0.3s;
}

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

.scroll-cue {
  display: flex;
  align-items: center;
  justify-self: center;
  gap: 0.8rem;
  color: var(--muted);
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.scroll-cue__line {
  position: relative;
  display: block;
  width: 3rem;
  height: 1px;
  overflow: hidden;
  background: var(--line);
}

.scroll-cue__line::after {
  position: absolute;
  inset: 0;
  transform: translateX(-100%);
  background: var(--blue);
  content: "";
  animation: scan 2s var(--ease) infinite;
}

@keyframes scan { 55%, 100% { transform: translateX(100%); } }

.state-readout {
  display: flex;
  align-items: flex-end;
  justify-content: flex-end;
  gap: 1rem;
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.state-readout span { color: var(--muted); }
.state-readout strong { min-width: 5.6rem; color: var(--blue); font-weight: 500; text-align: right; }

/* Signal strip */
.signal-strip {
  overflow: hidden;
  background: var(--blue);
  color: var(--white);
}

.signal-strip__track {
  display: flex;
  width: max-content;
  align-items: center;
  padding: 0.75rem 0 0.9rem;
  animation: marquee 84s linear infinite;
  font-family: var(--serif);
  font-size: clamp(2.5rem, 4vw, 4.5rem);
  line-height: 1;
  letter-spacing: -0.04em;
  white-space: nowrap;
}

.signal-strip__track i {
  width: 0.42rem;
  height: 0.42rem;
  margin: 0 2.2rem;
  border-radius: 50%;
  background: var(--blue-pale);
}

@keyframes marquee { to { transform: translateX(-50%); } }

/* Problem */
.problem {
  min-height: 105vh;
  background: var(--paper);
}

.problem__statement {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(18rem, 0.45fr);
  align-items: end;
  gap: clamp(3rem, 8vw, 9rem);
  padding: clamp(6rem, 10vw, 11rem) 0;
}

.problem__statement h2 { max-width: 70rem; }
.problem__statement h2 em { display: inline; }

.problem__lead {
  max-width: 25rem;
  padding-bottom: 0.7rem;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.75;
}

.problem__detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(3rem, 8vw, 9rem);
  align-items: start;
  margin-left: 23%;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
}

.system-sequence {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--muted);
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.system-sequence i { flex: 1; height: 1px; background: var(--line); }
.problem__detail > p { max-width: 39rem; font-size: 1.1rem; line-height: 1.75; }

/* Capabilities */
.capabilities { background: var(--paper-deep); }

.capabilities__intro,
.engagements__heading {
  display: grid;
  grid-template-columns: 1.4fr 0.55fr;
  align-items: end;
  gap: clamp(3rem, 8vw, 9rem);
  padding: clamp(5rem, 9vw, 9rem) 0;
}

.capabilities__intro > p,
.engagements__heading > p {
  max-width: 28rem;
  padding-bottom: 0.7rem;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.75;
}

.capabilities__layout {
  display: grid;
  grid-template-columns: minmax(22rem, 0.78fr) minmax(0, 1.08fr);
  gap: clamp(4rem, 8vw, 9rem);
  align-items: start;
}

.capabilities__instrument {
  position: sticky;
  top: calc(var(--header-h) + 2.5rem);
}

.instrument-frame {
  position: relative;
  aspect-ratio: 1;
  overflow: hidden;
  border: 1px solid var(--line);
  background:
    linear-gradient(rgba(11, 91, 214, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(11, 91, 214, 0.055) 1px, transparent 1px),
    rgba(255, 255, 255, 0.26);
  background-size: 12.5% 12.5%;
}

.instrument-frame .orbital-fallback { inset: 15%; }
.instrument-frame__label { right: 1rem; bottom: 1rem; }

.ring-legend {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.7rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.9rem;
  letter-spacing: 0.035em;
  text-transform: uppercase;
}

.ring-legend span {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  transition: color 0.35s;
}

.ring-legend span::before {
  width: 0.4rem;
  height: 0.4rem;
  border: 1px solid currentColor;
  border-radius: 50%;
  content: "";
}

.ring-legend span.is-active { color: var(--blue); }
.ring-legend span.is-active::before { background: var(--blue); }

.capability {
  min-height: 34rem;
  padding: 2rem 0 3rem;
  border-top: 1px solid var(--line);
  transition: border-color 0.35s;
}

.capability:last-child { border-bottom: 1px solid var(--line); }
.capability.is-active { border-color: var(--blue); }

.capability__top {
  display: flex;
  justify-content: space-between;
  color: var(--muted);
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.capability__top p { display: flex; align-items: center; gap: 0.7rem; }
.capability__top p span { width: 0.42rem; height: 0.42rem; border: 1px solid currentColor; border-radius: 50%; transition: background 0.35s; }
.capability.is-active .capability__top p span { border-color: var(--blue); background: var(--blue); }
.capability__top strong { color: var(--blue); font-weight: 500; }

.capability h3 {
  margin-top: 2.5rem;
  font-family: var(--serif);
  font-size: clamp(4.4rem, 6.5vw, 7.4rem);
  font-weight: 400;
  line-height: 0.9;
  letter-spacing: -0.055em;
  transition: color 0.45s var(--ease);
}

.capability.is-active h3 {
  color: var(--blue);
  font-style: italic;
}

.capability__summary {
  max-width: 39rem;
  margin: 1.2rem 0 3rem;
  color: var(--muted);
  font-family: var(--serif);
  font-size: clamp(1.45rem, 2vw, 2.05rem);
  line-height: 1.15;
}

.capability ul {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.65rem 2rem;
  margin-left: 20%;
  font-size: 0.9rem;
  text-transform: uppercase;
}

.capability li {
  position: relative;
  padding-left: 1rem;
}

.capability li::before {
  position: absolute;
  top: 0.6em;
  left: 0;
  width: 0.32rem;
  height: 0.32rem;
  border-radius: 50%;
  background: var(--blue);
  content: "";
}

.capability > a {
  display: flex;
  justify-content: space-between;
  width: 80%;
  margin: 3.4rem 0 0 auto;
  padding: 0.9rem 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  font-size: 0.9rem;
  transition: color 0.3s, padding 0.35s var(--ease);
}

.capability > a:hover,
.capability > a:focus-visible { padding-right: 0.7rem; color: var(--blue); }

/* Method */
.approach {
  background: var(--navy);
  color: var(--white);
}

.approach__heading {
  display: grid;
  grid-template-columns: 1.5fr 0.5fr;
  align-items: end;
  gap: clamp(3rem, 8vw, 9rem);
  padding: clamp(5rem, 9vw, 9rem) 0;
}

.approach__heading h2 em { color: var(--blue-bright); }
.approach__heading > p { max-width: 28rem; padding-bottom: 0.8rem; color: rgba(255, 255, 255, 0.69); font-size: 1.05rem; line-height: 1.75; }

.method-list { border-bottom: 1px solid rgba(255, 255, 255, 0.2); }

.method {
  position: relative;
  display: grid;
  grid-template-columns: 9% 1fr auto;
  gap: 2rem;
  min-height: 18rem;
  padding: 2.4rem 0;
  overflow: hidden;
  border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.method::before {
  position: absolute;
  inset: 0;
  transform: translateY(101%);
  background: var(--blue);
  content: "";
  transition: transform 0.65s var(--ease);
}

.method:hover::before,
.method:focus-within::before { transform: none; }
.method > * { position: relative; z-index: 1; }

.method__number,
.method__meta {
  color: var(--blue-bright);
  font-size: 0.9rem;
  letter-spacing: 0.045em;
  text-transform: uppercase;
}

.method:hover .method__number,
.method:hover .method__meta { color: var(--blue-pale); }

.method h3 {
  margin: 1.6rem 0 1rem;
  font-family: var(--serif);
  font-size: clamp(3.2rem, 5.4vw, 6rem);
  font-weight: 400;
  line-height: 0.9;
  letter-spacing: -0.05em;
}

.method div > p:last-child { max-width: 43rem; color: rgba(255, 255, 255, 0.68); font-size: 1.1rem; line-height: 1.75; }
.method:hover div > p:last-child { color: rgba(255, 255, 255, 0.94); }

.method__signal {
  align-self: center;
  width: clamp(4rem, 8vw, 8rem);
  height: 1px;
  background: rgba(255, 255, 255, 0.35);
}

.method__signal::after {
  display: block;
  width: 0.5rem;
  height: 0.5rem;
  transform: translateY(-0.22rem);
  border-radius: 50%;
  background: var(--blue-bright);
  content: "";
  transition: transform 0.6s var(--ease);
}

.method:hover .method__signal::after { transform: translate(calc(clamp(4rem, 8vw, 8rem) - 0.5rem), -0.22rem); }

/* Engagements */
.engagements { background: var(--paper); }

.engagement-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.7rem;
}

.engagement {
  position: relative;
  display: flex;
  min-height: 33rem;
  flex-direction: column;
  padding: 1.6rem;
  overflow: hidden;
  border: 1px solid var(--line);
}

.engagement::after {
  position: absolute;
  right: -28%;
  bottom: -18%;
  width: 80%;
  aspect-ratio: 1;
  border: 1px solid currentColor;
  border-radius: 50%;
  opacity: 0.16;
  content: "";
  transition: transform 0.7s var(--ease);
}

.engagement:hover::after { transform: scale(1.22); }
.engagement > * { position: relative; z-index: 1; }

.engagement__top,
.engagement__footer {
  display: flex;
  justify-content: space-between;
  padding-bottom: 1rem;
  border-bottom: 1px solid currentColor;
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.engagement h3 {
  margin-top: 2.3rem;
  font-family: var(--serif);
  font-size: clamp(2.8rem, 4vw, 4.6rem);
  font-weight: 400;
  line-height: 0.93;
  letter-spacing: -0.05em;
}

.engagement > p { max-width: 26rem; margin-top: 1.5rem; font-size: 1.1rem; line-height: 1.75; }
.engagement__footer { align-items: flex-end; margin-top: auto; padding: 1rem 0 0; border-top: 1px solid currentColor; border-bottom: 0; }
.engagement__footer span { opacity: 0.75; }
.engagement__footer strong { max-width: 12rem; font-family: var(--serif); font-size: 1.35rem; font-weight: 400; line-height: 1; text-align: right; text-transform: none; }

.engagement--blue { border-color: var(--blue); background: var(--blue); color: var(--white); }
.engagement--glass { background: linear-gradient(135deg, rgba(255, 255, 255, 0.76), rgba(255, 255, 255, 0.18)), radial-gradient(circle at 75% 75%, rgba(11, 91, 214, 0.28), transparent 56%); }
.engagement--ink { border-color: var(--ink); background: var(--ink); color: var(--white); }

.change-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: 6rem;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.change-strip p {
  min-height: 10rem;
  padding: 1.2rem 1.3rem;
  border-right: 1px solid var(--line);
  font-family: var(--serif);
  font-size: clamp(1.6rem, 2.3vw, 2.5rem);
  line-height: 1.05;
}

.change-strip p:last-child { border-right: 0; }
.change-strip span { display: block; margin-bottom: 2.7rem; color: var(--blue); font-family: var(--sans); font-size: 0.9rem; letter-spacing: 0.04em; text-transform: uppercase; }

.proof-note {
  display: grid;
  grid-template-columns: 0.7fr 1.3fr;
  max-width: 47rem;
  margin: 3rem 0 0 auto;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.7;
}

.proof-note span { color: var(--ink); font-weight: 600; }

/* About */
.about { background: var(--paper-deep); }

.about__grid {
  display: grid;
  grid-template-columns: 1.45fr 0.55fr;
  align-items: end;
  gap: clamp(3rem, 8vw, 9rem);
  padding: clamp(5rem, 9vw, 9rem) 0;
}

.about__copy { color: #334656; font-size: 1.05rem; line-height: 1.8; }
.about__copy p + p { margin-top: 1.5rem; }

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

.principle {
  min-height: 13rem;
  padding: 1.3rem;
  border-right: 1px solid var(--line);
}

.principle:last-child { border-right: 0; }
.principle span { color: var(--blue); font-size: 0.9rem; letter-spacing: 0.04em; text-transform: uppercase; }
.principle p { margin-top: 3.4rem; font-family: var(--serif); font-size: clamp(1.9rem, 2.7vw, 3rem); line-height: 1; letter-spacing: -0.04em; }

/* Contact */
.contact {
  position: relative;
  min-height: 100vh;
  overflow: hidden;
  background: var(--blue);
  color: var(--white);
}

.contact__orbit {
  position: absolute;
  top: -14%;
  right: -10%;
  width: min(55vw, 55rem);
  aspect-ratio: 1;
  opacity: 0.2;
}

.contact__orbit span {
  position: absolute;
  inset: 23%;
  border: 1px solid var(--white);
  border-radius: 50%;
}

.contact__orbit span:nth-child(1) { transform: rotate(16deg) scaleX(1.65); }
.contact__orbit span:nth-child(2) { transform: rotate(76deg) scaleX(1.65); }
.contact__orbit span:nth-child(3) { transform: rotate(136deg) scaleX(1.65); }
.contact__orbit i { position: absolute; top: 50%; left: 50%; width: 5%; aspect-ratio: 1; transform: translate(-50%, -50%); border-radius: 50%; background: var(--white); }

.contact__heading {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.45fr 0.55fr;
  align-items: end;
  gap: clamp(3rem, 8vw, 9rem);
  padding: clamp(5rem, 9vw, 9rem) 0 4rem;
}

.contact__heading h2 em { color: var(--white); }
.contact__heading > p { max-width: 28rem; padding-bottom: 0.8rem; color: rgba(255, 255, 255, 0.92); font-size: 1.05rem; line-height: 1.75; }

.contact__grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 0.6fr 1.4fr;
  gap: clamp(3rem, 8vw, 9rem);
  align-items: stretch;
}

.contact__aside {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: 1rem;
  color: rgba(255, 255, 255, 0.9);
  font-size: 0.9rem;
}

.contact__aside a {
  display: flex;
  justify-content: space-between;
  padding: 1rem 0;
  border-top: 1px solid rgba(255, 255, 255, 0.55);
  border-bottom: 1px solid rgba(255, 255, 255, 0.55);
  color: var(--white);
  font-family: var(--serif);
  font-size: clamp(1.35rem, 2vw, 2.3rem);
}

.form {
  display: flex;
  flex-direction: column;
  gap: 1.7rem;
  padding: clamp(1.5rem, 3vw, 3rem);
  background: var(--paper);
  color: var(--ink);
}

.no-js-contact {
  max-width: 42rem;
  padding: clamp(1.5rem, 3vw, 3rem);
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif);
  font-size: clamp(1.7rem, 3vw, 3rem);
  line-height: 1.08;
}

.no-js-contact a { color: var(--blue); text-decoration: underline; text-underline-offset: 0.12em; }

.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
.field { display: flex; flex-direction: column; }
.field > span { margin-bottom: 0.5rem; color: var(--muted); font-size: 0.9rem; letter-spacing: 0.04em; text-transform: uppercase; }

.field input,
.field select,
.field textarea {
  width: 100%;
  min-height: 3.15rem;
  padding: 0.7rem 0;
  border: 0;
  border-bottom: 1px solid var(--line);
  border-radius: 0;
  background: transparent;
  font-size: 1.05rem;
  transition: border-color 0.25s;
}

.field textarea { min-height: 7rem; resize: vertical; }
.field select { appearance: none; background: linear-gradient(45deg, transparent 50%, var(--muted) 50%) calc(100% - 0.75rem) 52% / 5px 5px no-repeat, linear-gradient(135deg, var(--muted) 50%, transparent 50%) calc(100% - 0.45rem) 52% / 5px 5px no-repeat; }
.field input:focus,
.field select:focus,
.field textarea:focus { border-color: var(--blue); }
.field input:focus-visible,
.field select:focus-visible,
.field textarea:focus-visible { outline-color: var(--blue); }
.field.is-invalid input,
.field.is-invalid textarea { border-color: #b42318; }

.field--hp {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
}

.form__actions { display: flex; align-items: center; gap: 1.3rem; min-height: 3.5rem; }
.form__submit { display: inline-flex; align-items: center; justify-content: space-between; gap: 2rem; min-width: 12rem; padding: 0.95rem 1.1rem; border-radius: 100vw; background: var(--ink); color: var(--white); font-size: 0.9rem; transition: transform 0.3s var(--ease), background 0.3s; }
.form__submit:hover,
.form__submit:focus-visible { transform: translateY(-2px); background: var(--blue); }
.form.is-sending .form__submit { opacity: 0.55; pointer-events: none; }
.form__status { max-width: 22rem; color: var(--muted); font-size: 0.9rem; line-height: 1.5; }
.form__status.is-error { color: #a1261d; }
.form__status a { text-decoration: underline; }
.form__done { margin: auto; padding: 5rem 0; font-family: var(--serif); font-size: clamp(2.4rem, 4vw, 4.5rem); line-height: 1; }

/* Footer */
.site-footer {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 2rem;
  padding: 4rem var(--pad) 1.6rem;
  background: var(--ink);
  color: var(--white);
}

.brand--footer .brand__mark { color: var(--blue-bright); }
.site-footer > p { align-self: center; color: rgba(255, 255, 255, 0.68); font-size: 0.9rem; text-align: center; text-transform: uppercase; }
.site-footer nav { display: flex; align-items: center; justify-content: flex-end; gap: 1.7rem; font-size: 0.9rem; }
.site-footer__legal { grid-column: 1 / -1; display: grid; grid-template-columns: 1fr 1fr 1fr; margin-top: 4rem; padding-top: 1rem; border-top: 1px solid rgba(255, 255, 255, 0.18); color: rgba(255, 255, 255, 0.6); font-size: 0.9rem; letter-spacing: 0.04em; text-transform: uppercase; }
.site-footer__legal span:nth-child(2) { text-align: center; }
.site-footer__legal a { text-align: right; }

@media (max-width: 1120px) {
  .hero__grid { grid-template-columns: 1.1fr 0.9fr; }
  .hero__title { font-size: clamp(5.1rem, 10vw, 7.5rem); }
  .hero__dek { margin-left: 8%; }
  .capabilities__layout { grid-template-columns: minmax(19rem, 0.72fr) 1fr; gap: 4rem; }
  .capability ul { margin-left: 8%; }
  .capability > a { width: 92%; }
  .engagement h3 { font-size: clamp(2.5rem, 3.7vw, 3.8rem); }
}

@media (max-width: 860px) {
  :root { --header-h: 4.8rem; }
  .site-header { grid-template-columns: 1fr auto; }
  .desktop-nav,
  .header-cta { display: none; }
  .menu-toggle { display: block; }
  .hero__grid { grid-template-columns: 1.05fr 0.95fr; padding-top: 5rem; }
  .hero__title { font-size: clamp(4.6rem, 12vw, 6rem); }
  .hero__dek { margin-left: 0; }
  .hero__instrument { width: 48vw; }
  .problem__statement,
  .capabilities__intro,
  .engagements__heading,
  .approach__heading,
  .about__grid,
  .contact__heading { grid-template-columns: 1fr; align-items: start; gap: 2.5rem; }
  .problem__lead,
  .capabilities__intro > p,
  .engagements__heading > p,
  .approach__heading > p,
  .contact__heading > p { margin-left: 35%; }
  .problem__detail { margin-left: 0; }
  .capabilities__layout { grid-template-columns: 1fr; }
  .capabilities__instrument { position: relative; top: 0; width: min(76vw, 38rem); margin: 0 auto 3rem; }
  .capability { min-height: 30rem; }
  .engagement-grid { grid-template-columns: 1fr; }
  .engagement { min-height: 25rem; }
  .change-strip { grid-template-columns: 1fr; }
  .change-strip p { min-height: 8rem; border-right: 0; border-bottom: 1px solid var(--line); }
  .change-strip p:last-child { border-bottom: 0; }
  .contact__grid { grid-template-columns: 1fr; }
  .contact__aside { order: 2; }
}

@media (max-width: 620px) {
  :root { --pad: 1.1rem; --section-y: 6.7rem; }
  body { font-size: 15px; }
  .site-header { min-height: var(--header-h); padding: 0 var(--pad); }
  .site-header.is-scrolled { min-height: var(--header-h); }
  .brand__mark { width: 2rem; height: 2rem; }
  .brand__name { font-size: 0.9rem; }
  .mobile-menu { padding-top: calc(var(--header-h) + 1.7rem); }
  .mobile-menu__footer { flex-direction: column; gap: 0.65rem; }
  .section-rail { grid-template-columns: 2.8rem 1fr; gap: 0.65rem; }
  .section-rail > p:last-child { display: none; }
  .section-rail > p:first-of-type::before { width: 1.7rem; }
  .display { font-size: clamp(3.55rem, 16vw, 4.7rem); line-height: 0.9; }
  .hero { min-height: max(46rem, 100svh); padding-top: calc(var(--header-h) + 1.7rem); }
  .hero__meta p:last-child { display: none; }
  .hero__grid { display: grid; grid-template-columns: 1fr; grid-template-rows: auto auto auto; gap: 0; padding: 4.5rem 0 2rem; }
  .hero__copy { display: contents; }
  .hero__title { grid-row: 1; font-size: clamp(4rem, 18.7vw, 5.25rem); line-height: 0.79; }
  .hero__title span:nth-child(2) { margin-left: 2%; }
  .hero__instrument { grid-row: 2; width: min(88vw, 25rem); min-width: 0; margin: -0.7rem 0 -1rem auto; }
  .hero__dek { grid-row: 3; min-width: 0; max-width: 22rem; margin: 0; font-size: 1rem; }
  .instrument-label { display: none; }
  .instrument-index { right: 16%; }
  .hero__footer { grid-template-columns: 1fr auto; gap: 1.5rem; }
  .state-readout { display: none; }
  .scroll-cue { justify-self: end; max-width: 7.5rem; }
  .scroll-cue__line { width: 1.7rem; }
  .signal-strip__track { animation-duration: 60s; }
  .site-footer { grid-template-columns: 1fr; gap: 1.4rem; }
  .site-footer > p { text-align: left; }
  .site-footer nav { justify-content: flex-start; flex-wrap: wrap; gap: 0.6rem 1.2rem; }
  .site-footer__legal { grid-template-columns: 1fr; gap: 0.5rem; }
  .site-footer__legal a { text-align: left; }
  .capabilities__layout, .capability-list, .capability { min-width: 0; }
  .capability h3 { overflow-wrap: anywhere; }
  .ring-legend { display: flex; flex-wrap: wrap; gap: 0.5rem 1.2rem; }
  .problem { min-height: 0; }
  .problem__statement { padding: 4.5rem 0 5.5rem; }
  .problem__lead,
  .capabilities__intro > p,
  .engagements__heading > p,
  .approach__heading > p,
  .contact__heading > p { margin-left: 16%; }
  .problem__detail { grid-template-columns: 1fr; gap: 2rem; }
  .system-sequence { gap: 0.4rem; font-size: 0.9rem; }
  .capabilities__intro,
  .engagements__heading,
  .approach__heading,
  .about__grid,
  .contact__heading { padding: 4.5rem 0; }
  .capabilities__instrument { width: 100%; }
  .ring-legend { font-size: 0.9rem; }
  .capability { min-height: 0; padding: 2rem 0 5.5rem; }
  .capability h3 { font-size: clamp(3.1rem, 13vw, 5rem); }
  .capability__summary { margin-bottom: 2.5rem; }
  .capability ul { grid-template-columns: 1fr; gap: 0.72rem; margin-left: 8%; }
  .capability > a { width: 92%; margin-top: 2.8rem; }
  .method { grid-template-columns: 2.2rem 1fr; min-height: 23rem; padding: 2.2rem 0; }
  .method__signal { display: none; }
  .method h3 { font-size: clamp(3.1rem, 14.5vw, 4.2rem); }
  .engagement { min-height: 24rem; }
  .engagement h3 { font-size: clamp(3rem, 13.5vw, 4rem); }
  .change-strip { margin-top: 4rem; }
  .change-strip p { min-height: 7.5rem; }
  .proof-note { grid-template-columns: 1fr; gap: 0.6rem; }
  .principles { grid-template-columns: 1fr; }
  .principle { min-height: 10rem; border-right: 0; border-bottom: 1px solid var(--line); }
  .principle:last-child { border-bottom: 0; }
  .principle p { margin-top: 2rem; }
  .contact { min-height: 0; }
  .contact__orbit { top: 3%; right: -55%; width: 120vw; }
  .contact__grid { gap: 2rem; }
  .form { padding: 1.25rem; }
  .form__row { grid-template-columns: 1fr; gap: 1.7rem; }
  .form__actions { align-items: flex-start; flex-direction: column; }
  .site-footer { grid-template-columns: 1fr; padding-top: 3rem; }
  .site-footer > p { display: none; }
  .site-footer nav { gap: 1rem; }
  .site-footer__legal { grid-template-columns: 1fr; gap: 1rem; }
  .site-footer__legal span:nth-child(2) { display: none; }
}

@media (max-height: 620px) and (orientation: landscape) {
  .hero { min-height: 48rem; }
  .mobile-menu nav a { font-size: 2.4rem; }
}

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

@media print {
  .site-header,
  .mobile-menu,
  .signal-strip,
  .hero__footer,
  .site-footer { display: none !important; }
  body { background: var(--white); color: #000; }
  .hero { min-height: auto; padding-top: 2rem; }
  canvas { display: none !important; }
  .orbital-fallback { opacity: 1 !important; }
  .section-pad { padding: 3rem 0; }
  .reveal { opacity: 1 !important; transform: none !important; }
}