:root {
  color-scheme: dark;
  --black: #020504;
  --black-2: #07100e;
  --ink: #07130f;
  --white: #f7fff9;
  --paper: #f2fbf5;
  --green: #06231d;
  --green-2: #0b3c31;
  --mint: #a9ffe9;
  --mist: #d7e5df;
  --muted: #a3b5ae;
  --muted-dark: #40544c;
  --line: rgba(169, 255, 233, 0.24);
  --line-soft: rgba(215, 229, 223, 0.14);
  --line-strong: rgba(169, 255, 233, 0.52);
  --line-dark: rgba(7, 19, 15, 0.18);
  --max: 1180px;
  --shadow: 0 34px 120px rgba(0, 0, 0, 0.52);
  --display-leading: 0.98;
  --title-leading: 1.06;
  --body-leading: 1.66;
  --caption-leading: 1.16;
  --display-weight: 420;
  --label-weight: 720;
  --section-y: 116px;
  --section-y-compact: 104px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--black);
  color: var(--white);
  font-family:
    -apple-system, BlinkMacSystemFont, "SF Pro Display", "Helvetica Neue", Helvetica, Arial, ui-sans-serif, sans-serif;
  font-size: 16px;
  line-height: var(--body-leading);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body.is-loading {
  overflow: hidden;
}

body.nav-open {
  overflow: hidden;
}

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

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

button {
  font: inherit;
}

.site-loader {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: center;
  overflow: hidden;
  background:
    radial-gradient(circle at 70% 38%, rgba(169, 255, 233, 0.16), transparent 24%),
    linear-gradient(135deg, #020504 0%, #061b16 54%, #020504 100%);
  color: var(--white);
  transition:
    opacity 360ms ease,
    visibility 360ms ease;
}

.site-loader[hidden] {
  display: none;
}

.site-loader::before {
  display: none;
  content: "";
}

.site-loader::after {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(169, 255, 233, 0.075) 1px, transparent 1px),
    linear-gradient(90deg, rgba(169, 255, 233, 0.075) 1px, transparent 1px);
  background-size: 54px 54px;
  content: "";
  opacity: 0.16;
  animation: loader-grid 14s linear infinite;
}

body:not(.is-loading) .site-loader {
  visibility: hidden;
  opacity: 0;
  pointer-events: none;
}

.loader-scene {
  display: none;
}

.loader-dot,
.loader-ring,
.loader-line {
  position: absolute;
  display: block;
}

.loader-dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--mint);
  animation: loader-pulse 1.8s ease-in-out infinite alternate;
}

.loader-ring {
  width: 34px;
  height: 34px;
  border: 2px solid var(--mint);
  border-radius: 50%;
  animation: loader-pulse 2.4s ease-in-out infinite alternate;
}

.loader-line {
  width: 2px;
  height: 108px;
  background: var(--mint);
  transform-origin: center;
}

.ld1 { left: 18%; top: 24%; }
.ld2 { left: 64%; top: 18%; animation-delay: 240ms; }
.ld3 { right: 21%; bottom: 24%; animation-delay: 520ms; }
.lr1 { left: 28%; bottom: 28%; }
.lr2 { right: 24%; top: 31%; animation-delay: 340ms; }
.ll1 { left: 39%; top: 18%; }
.ll2 { right: 36%; bottom: 18%; transform: rotate(42deg); }

.loader-content {
  position: relative;
  z-index: 2;
  display: grid;
  gap: 22px;
  width: min(360px, calc(100% - 48px));
  justify-items: center;
}

.loader-logo {
  display: block;
  width: min(236px, 68vw);
  height: auto;
  filter: invert(1) brightness(1.14) contrast(1.04) drop-shadow(0 0 36px rgba(169, 255, 233, 0.12));
  opacity: 0.96;
  pointer-events: none;
  user-select: none;
}

.loader-track {
  width: min(320px, 100%);
  height: 8px;
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: rgba(247, 255, 249, 0.08);
}

.loader-track span {
  display: block;
  width: 0%;
  height: 100%;
  border-radius: inherit;
  background: var(--mint);
  transition: width 160ms ease-out;
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 72px;
  padding: 14px clamp(18px, 4vw, 52px);
  background: rgba(2, 5, 4, 0.78);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(20px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.brand-mark {
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  width: 48px;
  height: 48px;
  padding: 6px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--white);
  box-shadow: 0 0 28px rgba(169, 255, 233, 0.08);
}

.brand-mark img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.brand-copy {
  display: grid;
  gap: 2px;
  min-width: 0;
}

.brand strong {
  color: var(--white);
  font-size: 15px;
  font-weight: 660;
  line-height: 1.12;
}

.brand small {
  color: var(--muted);
  font-size: 12px;
  line-height: var(--caption-leading);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

.site-nav a {
  min-height: 38px;
  padding: 9px 12px;
  border: 1px solid transparent;
  border-radius: 999px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 620;
  line-height: 1;
}

.site-nav a:hover {
  border-color: var(--line);
  color: var(--white);
}

.menu-button {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: rgba(169, 255, 233, 0.06);
}

.menu-button span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 4px auto;
  background: var(--white);
}

.hero {
  position: relative;
  min-height: 100svh;
  padding: 126px clamp(24px, 5vw, 72px) 48px;
  overflow: hidden;
  background: var(--black);
}

.hero::after {
  display: none;
  content: "";
}

.hero-video,
.hero-scrim,
.outline-word,
.dot-field,
.corner-stack {
  position: absolute;
}

.hero-video {
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  opacity: 0.22;
  filter: saturate(0.15) contrast(1.25) brightness(0.55);
  transform: scale(1.08);
}

.hero-scrim {
  inset: 0;
  background:
    linear-gradient(90deg, rgba(2, 5, 4, 0.98) 0%, rgba(2, 5, 4, 0.86) 44%, rgba(2, 5, 4, 0.46) 100%),
    linear-gradient(0deg, rgba(2, 5, 4, 1) 0%, rgba(2, 5, 4, 0.18) 58%);
}

.outline-word,
.system-word {
  z-index: 1;
  color: transparent;
  font-size: 12rem;
  font-weight: 760;
  line-height: 0.8;
  white-space: nowrap;
  -webkit-text-stroke: 1px rgba(247, 255, 249, 0.72);
  text-stroke: 1px rgba(247, 255, 249, 0.72);
}

.outline-word {
  top: 7.8rem;
  right: clamp(24px, 5vw, 72px);
  left: auto;
  bottom: auto;
  font-size: clamp(8rem, 13.5vw, 13rem);
  opacity: 0.1;
}

.corner-stack {
  top: 7.8rem;
  right: clamp(24px, 5vw, 72px);
  z-index: 2;
  display: grid;
  gap: 8px;
  justify-items: end;
  padding-right: 14px;
  border-right: 1px solid rgba(169, 255, 233, 0.38);
  color: rgba(169, 255, 233, 0.88);
  font-size: 0.82rem;
  font-weight: var(--label-weight);
  line-height: 1;
  text-transform: uppercase;
}

.corner-stack span {
  color: var(--white);
  font-size: 1rem;
}

.dot-field {
  display: none;
  inset: 0;
  z-index: 2;
  pointer-events: none;
}

.dot,
.ring,
.line {
  position: absolute;
  display: block;
}

.dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--mint);
}

.ring {
  width: 26px;
  height: 26px;
  border: 2px solid var(--mint);
  border-radius: 50%;
}

.line {
  width: 2px;
  height: 86px;
  background: var(--mint);
  transform-origin: top;
}

.d1 { left: 14%; top: 15%; }
.d2 { left: 24%; top: 22%; }
.d3 { left: 41%; top: 15%; }
.d4 { left: 56%; top: 28%; }
.d5 { left: 66%; top: 63%; }
.d6 { left: 31%; bottom: 18%; }
.d7 { right: 18%; top: 42%; }
.r1 { left: 8%; top: 38%; }
.r2 { left: 43%; bottom: 22%; }
.r3 { right: 21%; top: 18%; }
.l1 { left: 24%; top: 18%; }
.l2 { left: 58%; bottom: 18%; transform: rotate(42deg); }
.l3 { right: 28%; top: 22%; height: 52px; }

.hero-inner {
  position: relative;
  z-index: 3;
  display: grid;
  align-content: center;
  min-height: calc(100svh - 218px);
  width: min(var(--max), 100%);
  margin: 0 auto;
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--mint);
  font-size: 0.78rem;
  font-weight: var(--label-weight);
  letter-spacing: 0;
  line-height: var(--caption-leading);
  text-transform: uppercase;
}

.hero h1,
.section-copy h2,
.systems-heading h2,
.demo-heading h2,
.protocol-copy h2,
.contact-copy h2 {
  margin: 0;
  color: var(--white);
  font-weight: var(--display-weight);
  letter-spacing: 0;
  line-height: var(--display-leading);
}

.hero h1 {
  max-width: 1060px;
  font-size: clamp(5.4rem, 9vw, 8.1rem);
}

.hero-lower {
  display: grid;
  grid-template-columns: minmax(280px, 1fr) minmax(320px, max-content);
  gap: 24px;
  align-items: end;
  margin-top: 34px;
}

.hero-statement {
  display: grid;
  gap: 20px;
  position: relative;
}

.hero-lower p {
  margin: 0;
  color: rgba(247, 255, 249, 0.76);
  font-size: 1.08rem;
  line-height: var(--body-leading);
  text-shadow: 0 1px 24px rgba(0, 0, 0, 0.72);
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.hero-tags span {
  min-height: 32px;
  padding: 8px 11px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(2, 5, 4, 0.72);
  color: var(--mint);
  font-size: 0.74rem;
  font-weight: var(--label-weight);
  line-height: 1;
  backdrop-filter: blur(12px);
  text-transform: uppercase;
}

.hero-actions,
.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-actions {
  align-self: end;
  justify-content: flex-end;
}

.hero-actions .button {
  flex: 0 0 auto;
}

.button {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 14px 22px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 0.86rem;
  font-weight: var(--label-weight);
  line-height: 1.12;
  overflow: hidden;
  text-align: center;
  text-transform: uppercase;
  transition:
    background 180ms ease,
    border-color 180ms ease,
    color 180ms ease,
    transform 180ms ease;
}

.button:hover {
  transform: translateY(-1px);
}

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

.button-primary:hover {
  background: var(--mint);
}

.button-ghost,
.button-light {
  border-color: var(--line-strong);
  color: var(--white);
}

.button-ghost:hover,
.button-light:hover {
  background: rgba(169, 255, 233, 0.08);
}

.signal-section,
.systems-section,
.demo-section,
.protocol-section,
.contact-section {
  position: relative;
  overflow: hidden;
  padding: var(--section-y) clamp(20px, 5vw, 68px);
}

.signal-section::before,
.demo-section::before,
.protocol-section::before,
.contact-section::before {
  position: absolute;
  z-index: 0;
  color: transparent;
  font-size: clamp(8rem, 12vw, 11.25rem);
  font-weight: 760;
  letter-spacing: 0;
  line-height: 0.8;
  white-space: nowrap;
  pointer-events: none;
  -webkit-text-stroke: 1px rgba(247, 255, 249, 0.58);
  text-stroke: 1px rgba(247, 255, 249, 0.58);
}

.signal-section > *,
.demo-section > *,
.protocol-section > *,
.contact-section > * {
  position: relative;
  z-index: 1;
}

#about,
#services,
#demo,
#contact {
  scroll-margin-top: 72px;
}

.section-index {
  color: rgba(247, 255, 249, 0.16);
  font-size: 9rem;
  font-weight: 300;
  line-height: 0.9;
  pointer-events: none;
}

.signal-section,
.protocol-section {
  display: grid;
  grid-template-columns: minmax(150px, 0.26fr) minmax(0, 1fr);
  gap: clamp(40px, 6vw, 96px);
  background: var(--black);
  border-top: 1px solid var(--line);
}

.signal-section::before {
  top: 5.2rem;
  right: clamp(24px, 5vw, 72px);
  content: "STUDIO";
  opacity: 0.115;
}

.section-copy,
.protocol-copy {
  width: min(930px, 100%);
}

.section-copy h2,
.systems-heading h2,
.protocol-copy h2,
.contact-copy h2 {
  font-size: clamp(4rem, 6vw, 5.5rem);
}

.section-copy > p {
  max-width: 700px;
  margin: 30px 0 0;
  color: var(--muted);
  font-size: 1.16rem;
  line-height: var(--body-leading);
}

.signal-rows {
  grid-column: 2;
  display: grid;
  margin-top: 66px;
  border-top: 1px solid var(--line);
}

.signal-rows div {
  display: grid;
  grid-template-columns: minmax(220px, 0.46fr) minmax(280px, 1fr);
  gap: 36px;
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
}

.signal-rows strong {
  color: var(--white);
  font-size: 1.35rem;
  font-weight: 600;
  line-height: var(--title-leading);
}

.signal-rows span {
  color: var(--muted);
  line-height: var(--body-leading);
}

.systems-section {
  display: grid;
  grid-template-columns: minmax(150px, 0.26fr) minmax(0, 1fr);
  gap: clamp(40px, 6vw, 96px);
  padding-top: var(--section-y-compact);
  padding-bottom: var(--section-y-compact);
  background: var(--paper);
  color: var(--ink);
}

.systems-section::before {
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(circle at 84% 20%, rgba(6, 35, 29, 0.08), transparent 26%),
    transparent;
  content: "";
  pointer-events: none;
}

.systems-section .section-index {
  color: rgba(7, 19, 15, 0.12);
}

.systems-section .eyebrow,
.system-list span {
  color: var(--green-2);
}

.system-word {
  position: absolute;
  right: clamp(24px, 5vw, 72px);
  top: 3.4rem;
  z-index: 0;
  opacity: 0.105;
  -webkit-text-stroke-color: var(--green);
  text-stroke-color: var(--green);
}

.systems-heading {
  position: relative;
  z-index: 1;
}

.systems-heading h2 {
  color: var(--ink);
}

.system-list {
  position: relative;
  z-index: 1;
  grid-column: 2;
  display: grid;
  margin-top: 54px;
  background: transparent;
  border-top: 1px solid var(--line-dark);
}

.system-list article {
  position: relative;
  display: grid;
  grid-template-columns: 70px minmax(280px, 0.82fr) minmax(340px, 0.8fr);
  gap: 40px;
  align-items: start;
  padding: 44px 0;
  border-bottom: 1px solid var(--line-dark);
  background: var(--paper);
}

.system-list span {
  padding-top: 6px;
  font-size: 0.76rem;
  font-weight: var(--label-weight);
  line-height: 1;
}

.system-list h3 {
  margin: 0;
  color: var(--ink);
  font-size: 3.18rem;
  font-weight: var(--display-weight);
  line-height: var(--title-leading);
}

.system-list article > div {
  min-height: 100%;
  padding-left: 32px;
  border-left: 1px solid rgba(7, 19, 15, 0.18);
}

.system-list p {
  margin: 0;
  color: var(--muted-dark);
  font-size: 1.05rem;
  line-height: var(--body-leading);
}

.deliverables {
  display: grid;
  gap: 9px;
  padding: 18px 0 0;
  margin: 0;
  list-style: none;
}

.deliverables li {
  position: relative;
  padding-left: 22px;
  color: var(--ink);
  font-size: 0.95rem;
  font-weight: 620;
  line-height: 1.42;
}

.deliverables li::before {
  position: absolute;
  top: 0.52em;
  left: 0;
  width: 8px;
  height: 8px;
  border: 1px solid var(--green-2);
  border-radius: 50%;
  content: "";
}

.demo-section {
  background: var(--black);
  border-top: 1px solid var(--line);
}

.demo-section::before {
  top: 6rem;
  left: clamp(24px, 5vw, 72px);
  content: "VERIFY";
  opacity: 0.11;
}

.demo-heading {
  width: min(var(--max), 100%);
  margin: 0 auto;
}

.demo-heading h2 {
  max-width: 1060px;
  font-size: clamp(4.8rem, 8vw, 7.45rem);
}

.demo-heading p {
  max-width: 680px;
  margin: 26px 0 0;
  color: var(--muted);
  font-size: 1.08rem;
  line-height: var(--body-leading);
}

.demo-modules {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  width: min(1320px, 100%);
  margin: 24px auto 0;
  background: transparent;
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}

.demo-modules article {
  min-height: 74px;
  padding: 16px;
  background: transparent;
  border-right: 1px solid var(--line-soft);
}

.demo-modules article:last-child {
  border-right: 0;
}

.demo-modules span,
.demo-modules strong {
  display: block;
}

.demo-modules span {
  color: var(--mint);
  font-size: 0.76rem;
  font-weight: var(--label-weight);
  line-height: 1;
}

.demo-modules strong {
  margin-top: 12px;
  color: var(--white);
  font-size: 0.98rem;
  font-weight: 600;
  line-height: 1.18;
}

.demo-stage {
  width: min(1320px, 100%);
  margin: 48px auto 0;
  background: transparent;
  overflow: visible;
  box-shadow: none;
}

.stage-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 22px;
  padding: 0 0 16px;
  background: transparent;
  border-bottom: 1px solid var(--line);
}

.stage-meta span {
  display: flex;
  align-items: center;
  gap: 9px;
  min-height: auto;
  padding: 0;
  background: transparent;
  color: var(--mint);
  font-size: 0.72rem;
  font-weight: var(--label-weight);
  line-height: 1;
  text-transform: uppercase;
}

.stage-meta span::before {
  flex: 0 0 auto;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--mint);
  content: "";
  opacity: 0.9;
}

.demo-stage video {
  width: 100%;
  aspect-ratio: 16 / 8.6;
  object-fit: cover;
  background: var(--black);
  margin-top: 18px;
}

.protocol-list {
  grid-column: 2;
  display: grid;
  gap: 0;
  padding: 0;
  margin: 64px 0 0;
  list-style: none;
  background: transparent;
  border-top: 1px solid var(--line);
}

.protocol-section::before {
  left: clamp(24px, 5vw, 72px);
  bottom: 4rem;
  content: "GOVERN";
  opacity: 0.11;
}

.protocol-list li {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 34px;
  min-height: auto;
  padding: 34px 0;
  background: transparent;
  border-bottom: 1px solid var(--line);
}

.protocol-list span {
  color: var(--mint);
  font-size: 0.84rem;
  font-weight: var(--label-weight);
  line-height: 1;
  text-transform: uppercase;
}

.protocol-list strong {
  color: var(--white);
  font-size: 2.34rem;
  font-weight: var(--display-weight);
  line-height: 1.16;
}

.contact-section {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  gap: clamp(32px, 5vw, 78px);
  align-items: center;
  background: var(--green);
  border-top: 1px solid var(--line);
}

.contact-section::before {
  right: clamp(24px, 6vw, 90px);
  top: 3.8rem;
  content: "SCOPE";
  opacity: 0.1;
}

.contact-panel {
  align-self: center;
}

.contact-panel p {
  max-width: 660px;
  margin: 0;
  color: var(--muted);
  font-size: 1.08rem;
  line-height: var(--body-leading);
}

.contact-actions {
  margin-top: 28px;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 26px clamp(24px, 5vw, 72px);
  border-top: 1px solid var(--line);
  background: var(--black);
  color: var(--muted);
  font-size: 0.9rem;
}

@keyframes word-drift {
  from {
    transform: translateX(-2rem);
  }

  to {
    transform: translateX(4rem);
  }
}

@keyframes loader-grid {
  from {
    background-position: 0 0;
  }

  to {
    background-position: 54px 54px;
  }
}

@keyframes loader-pulse {
  from {
    opacity: 0.42;
    transform: scale(0.82);
  }

  to {
    opacity: 1;
    transform: scale(1.08);
  }
}

@keyframes soft-rise {
  from {
    opacity: 0.78;
    transform: translateY(8px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: no-preference) {
  .hero .eyebrow,
  .hero h1,
  .hero-lower {
    animation: soft-rise 760ms ease both;
  }

  .hero h1 {
    animation-delay: 90ms;
  }

  .hero-lower {
    animation-delay: 180ms;
  }

  .system-list article {
    transition:
      border-color 180ms ease,
      box-shadow 180ms ease,
      transform 180ms ease;
  }

  .system-list article:hover {
    border-bottom-color: rgba(7, 19, 15, 0.32);
  }
}

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

  .outline-word,
  .site-loader::after,
  .loader-dot,
  .loader-ring {
    animation: none;
  }
}

@media (max-width: 1180px) {
  .hero h1 {
    font-size: 6.6rem;
  }

  .outline-word,
  .system-word,
  .signal-section::before,
  .demo-section::before,
  .protocol-section::before,
  .contact-section::before {
    font-size: 9rem;
  }

  .section-copy h2,
  .systems-heading h2,
  .protocol-copy h2,
  .contact-copy h2 {
    font-size: 4.6rem;
  }

  .system-list h3 {
    font-size: 3rem;
  }

  .demo-heading h2 {
    font-size: 6.6rem;
  }
}

@media (max-width: 980px) {
  .signal-section,
  .systems-section,
  .protocol-section,
  .contact-section {
    grid-template-columns: 1fr;
  }

  .signal-section::before {
    right: 28px;
  }

  .demo-section::before {
    left: 28px;
  }

  .protocol-section::before {
    left: 28px;
  }

  .contact-section::before {
    right: 28px;
  }

  .signal-rows,
  .system-list,
  .protocol-list {
    grid-column: auto;
  }

  .system-list article {
    grid-template-columns: 64px 1fr;
  }

  .system-list article > div {
    grid-column: 2;
  }

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

  .demo-modules article:nth-child(2n) {
    border-right: 0;
  }
}

@media (max-width: 720px) {
  .loader-logo {
    width: min(210px, 66vw);
  }

  .site-header {
    min-height: 70px;
    padding: 13px 16px;
  }

  .menu-button {
    display: block;
  }

  .site-nav {
    position: fixed;
    inset: 78px 14px auto;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 10px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: rgba(2, 5, 4, 0.96);
    box-shadow: var(--shadow);
  }

  body.nav-open .site-nav {
    display: flex;
  }

  .site-nav a {
    min-height: 44px;
  }

  .brand-copy small {
    display: none;
  }

  .hero {
    padding: 106px 18px 40px;
  }

  .hero-video {
    object-position: 55% center;
    opacity: 0.2;
  }

  .corner-stack {
    display: none;
  }

  .outline-word {
    top: 5.9rem;
    right: 18px;
    left: auto;
    bottom: auto;
    font-size: clamp(3.9rem, 14vw, 5.2rem);
    opacity: 0.08;
  }

  .dot {
    width: 9px;
    height: 9px;
  }

  .ring {
    width: 22px;
    height: 22px;
  }

  .line {
    height: 58px;
  }

  .d4,
  .d5,
  .d7,
  .d6,
  .r1,
  .r2,
  .r3,
  .l1,
  .l2,
  .l3 {
    display: none;
  }

  .hero-inner {
    min-height: calc(100svh - 216px);
  }

  .hero h1 {
    font-size: 3.72rem;
    line-height: 1.03;
  }

  .hero-lower {
    grid-template-columns: 1fr;
    gap: 22px;
    margin-top: 26px;
  }

  .hero-actions {
    justify-content: stretch;
  }

  .hero-actions .button {
    flex: 1 1 100%;
  }

  .hero-tags {
    display: none;
  }

  .hero-lower p,
  .demo-heading p,
  .contact-panel p,
  .section-copy > p {
    font-size: 1rem;
    line-height: var(--body-leading);
  }

  .button {
    width: 100%;
    min-height: 52px;
    padding: 15px 16px;
    font-size: 0.84rem;
  }

  .signal-section,
  .systems-section,
  .demo-section,
  .protocol-section,
  .contact-section {
    padding: 76px 18px;
  }

  #about,
  #services,
  #demo,
  #contact {
    scroll-margin-top: 70px;
  }

  .signal-section::before,
  .demo-section::before,
  .protocol-section::before,
  .contact-section::before {
    font-size: clamp(3.65rem, 13.5vw, 4.85rem);
    opacity: 0.065;
  }

  .signal-section::before {
    top: 10.5rem;
    right: 18px;
    opacity: 0.08;
  }

  .demo-section::before {
    top: 6rem;
    left: 18px;
    opacity: 0.08;
  }

  .protocol-section::before {
    top: auto;
    right: auto;
    bottom: 2.6rem;
    left: 18px;
    opacity: 0.08;
  }

  .contact-section::before {
    top: 3.15rem;
    right: 18px;
    opacity: 0.07;
  }

  .systems-section {
    padding-top: 72px;
    padding-bottom: 72px;
  }

  .system-word {
    top: 3rem;
    right: 18px;
    font-size: clamp(3.7rem, 13.5vw, 4.9rem);
    opacity: 0.065;
  }

  .section-index {
    font-size: 5.5rem;
  }

  .section-copy h2,
  .systems-heading h2,
  .protocol-copy h2,
  .contact-copy h2,
  .demo-heading h2 {
    font-size: 3.08rem;
    line-height: 1.08;
  }

  .signal-rows div,
  .system-list article,
  .protocol-list li {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .signal-rows {
    margin-top: 42px;
  }

  .system-list h3 {
    font-size: 2.34rem;
    line-height: 1.08;
  }

  .system-list {
    margin-top: 34px;
  }

  .system-list article {
    padding: 34px 0;
  }

  .system-list article > div {
    grid-column: auto;
    padding-left: 0;
    border-left: 0;
  }

  .demo-modules {
    grid-template-columns: repeat(2, 1fr);
    margin-top: 16px;
  }

  .stage-meta {
    gap: 10px 14px;
  }

  .demo-stage {
    margin-top: 34px;
  }

  .demo-stage video {
    aspect-ratio: 16 / 11;
  }

  .protocol-list strong {
    font-size: 1.55rem;
    line-height: 1.22;
  }

  .site-footer {
    flex-direction: column;
  }
}

@media (max-width: 390px) {
  .hero h1 {
    font-size: 3.28rem;
  }

  .section-copy h2,
  .systems-heading h2,
  .protocol-copy h2,
  .contact-copy h2,
  .demo-heading h2 {
    font-size: 2.78rem;
  }

  .demo-modules {
    grid-template-columns: 1fr;
  }

  .demo-modules article {
    border-right: 0;
    border-bottom: 1px solid var(--line-soft);
  }

  .demo-modules article:last-child {
    border-bottom: 0;
  }
}