:root {
  --color-bg: #0B1020;
  --color-bg-secondary: #11182B;
  --color-bg-card: #151E34;
  --color-card: #151E34;
  --color-primary: #7C9CCB;
  --color-primary-light: #A8C4F0;
  --color-accent: #9B7CFF;
  --color-highlight: #D9E7FF;
  --color-text: #F5F7FC;
  --color-text-secondary: #A8B1C4;
  --color-text-muted: #68738A;
  --color-border: rgba(255, 255, 255, 0.1);
  --container-width: 1280px;
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --section-padding: 160px;
  --header-height: 72px;
  --font-sans: "Pretendard Variable", Pretendard, "Noto Sans KR", sans-serif;
  --font-display: "Space Grotesk", "Pretendard Variable", Pretendard, sans-serif;
  --font-mono: "DM Mono", ui-monospace, monospace;
  color-scheme: dark;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 18px;
  line-height: 1.7;
  font-weight: 400;
  text-rendering: optimizeLegibility;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 88px 88px;
  mask-image: radial-gradient(ellipse at 50% 20%, #000 10%, transparent 72%);
}

body > * {
  position: relative;
  z-index: 1;
}

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

h1,
h2,
h3,
p,
ul,
ol,
figure,
blockquote,
pre {
  margin: 0;
}

h1,
h2,
.display {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 0.96;
}

h2 {
  font-size: clamp(36px, 4.8vw, 68px);
  line-height: 1.08;
}

h3 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.03em;
  font-size: clamp(28px, 3vw, 40px);
  line-height: 1.15;
}

p,
li {
  word-break: keep-all;
  overflow-wrap: break-word;
}

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

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

:focus-visible {
  outline: 2px solid var(--color-primary-light);
  outline-offset: 3px;
}

#main:focus {
  outline: none;
}

::selection {
  background: var(--color-primary);
  color: var(--color-bg);
}

.skip {
  position: absolute;
  left: 16px;
  top: 12px;
  z-index: 80;
  transform: translateY(-160%);
  background: var(--color-primary);
  color: var(--color-bg);
  font-weight: 700;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
}

.skip:focus {
  transform: none;
}

.container {
  width: min(var(--container-width), calc(100% - 64px));
  margin-inline: auto;
}

.section {
  padding-block: var(--section-padding);
  border-top: 1px solid var(--color-border);
}

.section--alt {
  background: var(--color-bg-secondary);
}

section[id],
article[id] {
  scroll-margin-top: 88px;
}

#hero {
  scroll-margin-top: 0;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-primary);
}

.prose {
  max-width: 40rem;
  color: var(--color-text-secondary);
  font-size: 18px;
  line-height: 1.7;
}

.lead {
  max-width: 38rem;
  font-size: clamp(20px, 2vw, 24px);
  line-height: 1.55;
  letter-spacing: -0.03em;
  color: var(--color-text);
  font-weight: 600;
}

.highlight-line {
  max-width: 38rem;
  color: var(--color-highlight);
  font-size: clamp(18px, 2vw, 22px);
  line-height: 1.6;
  font-weight: 600;
  letter-spacing: -0.03em;
}

.emphasis {
  color: var(--color-highlight);
  font-weight: 700;
  letter-spacing: -0.03em;
  font-size: 20px;
}

.emphasis--space {
  margin-top: 48px;
}

.stack {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  padding: 0;
}

.chips li {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--color-primary-light);
  border: 1px solid var(--color-border);
  background: rgba(21, 30, 52, 0.72);
  border-radius: var(--radius-sm);
  padding: 8px 10px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  background: var(--color-primary);
  color: var(--color-bg);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  letter-spacing: -0.02em;
  transition: background-color 0.2s ease, transform 0.2s ease;
}

.btn:hover {
  background: var(--color-primary-light);
}

.btn:active {
  transform: translateY(1px);
}

.btn--small {
  min-height: 40px;
  padding: 0 14px;
  font-size: 14px;
}

.btn--large {
  min-height: 56px;
  padding: 0 22px;
  font-size: 17px;
}

.header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 40;
  height: var(--header-height);
  display: flex;
  align-items: center;
  border-bottom: 1px solid transparent;
  transition: background-color 0.25s ease, border-color 0.25s ease;
}

.header.is-scrolled {
  background: rgba(11, 16, 32, 0.9);
  border-bottom-color: var(--color-border);
}

@supports (backdrop-filter: blur(16px)) {
  .header.is-scrolled {
    background: rgba(11, 16, 32, 0.78);
    backdrop-filter: blur(16px);
  }
}

.header__bar {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 16px;
}

.logo {
  justify-self: start;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.16em;
}

.header .logo {
  position: relative;
  width: 62px;
  height: 66px;
  overflow: hidden;
  align-items: flex-start;
  gap: 0;
}

.header .logo__img {
  position: absolute;
  width: 72px;
  height: 108px;
  max-width: none;
  left: -3px;
  top: -17px;
  margin: 0;
}

.logo__mark {
  width: 14px;
  height: 14px;
  border: 1.5px solid var(--color-primary);
  border-radius: 2px;
  box-shadow: 4px 4px 0 rgba(124, 156, 203, 0.35);
}

.nav-menu {
  justify-self: center;
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-menu a {
  color: var(--color-text-secondary);
  font-size: 15px;
}

.nav-menu a:hover,
.nav-menu a[aria-current="true"] {
  color: var(--color-text);
}

.nav-cta {
  justify-self: end;
}

.nav-cta-mobile {
  display: none;
}

.nav-toggle {
  display: none;
  position: relative;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--color-text);
  cursor: pointer;
}

.nav-toggle span {
  position: absolute;
  left: 12px;
  width: 20px;
  height: 1.5px;
  background: currentColor;
  transition: transform 0.2s ease, opacity 0.2s ease, top 0.2s ease;
}

.nav-toggle span:nth-child(1) { top: 15px; }
.nav-toggle span:nth-child(2) { top: 21px; }
.nav-toggle span:nth-child(3) { top: 27px; }

.header.is-open .nav-toggle span:nth-child(1) {
  top: 21px;
  transform: rotate(45deg);
}

.header.is-open .nav-toggle span:nth-child(2) {
  opacity: 0;
}

.header.is-open .nav-toggle span:nth-child(3) {
  top: 21px;
  transform: rotate(-45deg);
}

.hero {
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding-top: calc(var(--header-height) + 48px);
  padding-bottom: 80px;
}

.hero .eyebrow {
  margin-bottom: 20px;
}

.hero h1 {
  font-size: clamp(56px, 7vw, 112px);
  max-width: 16ch;
}

.hero__layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 460px);
  gap: 48px;
  align-items: start;
  margin-top: 28px;
}

.hero__visual {
  position: relative;
}

.hero__visual::before {
  content: "";
  position: absolute;
  inset: -40px -20px auto auto;
  width: 360px;
  height: 360px;
  background: radial-gradient(circle, rgba(124, 156, 203, 0.16), transparent 68%);
  pointer-events: none;
}

.stage {
  --mx: 0;
  --my: 0;
  position: relative;
  width: min(100%, 460px);
  height: 440px;
  margin-left: auto;
}

.brick,
.plate {
  position: absolute;
  transform: translate(calc(var(--mx) * var(--d) * 1px), calc(var(--my) * var(--d) * 1px));
  transition: transform 0.45s ease-out;
}

.brick__face {
  display: grid;
  place-items: center;
  width: max-content;
  min-width: 108px;
  height: 64px;
  padding: 0 16px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-primary-light);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  animation: rise 0.8s ease both;
}

.brick:nth-child(2) .brick__face { animation-delay: 0.08s; }
.brick:nth-child(3) .brick__face { animation-delay: 0.16s; }
.brick:nth-child(4) .brick__face { animation-delay: 0.22s; }
.brick:nth-child(5) .brick__face { animation-delay: 0.3s; }
.brick:nth-child(6) .brick__face { animation-delay: 0.38s; }
.plate .brick__face { animation-delay: 0.46s; }

.b-code { top: 8%; left: 0; }
.b-ai { top: 0; left: 34%; }
.b-design { top: 18%; right: 0; left: auto; }
.b-data { top: 44%; left: 2%; }
.b-content { top: 40%; left: 32%; }
.b-auto { top: 56%; right: 0; left: auto; }

.b-ai .brick__face {
  border-color: rgba(155, 124, 255, 0.55);
  color: var(--color-highlight);
  box-shadow: 0 0 28px rgba(155, 124, 255, 0.18);
}

.b-auto .brick__face {
  letter-spacing: 0.08em;
}

.plate {
  left: 6%;
  right: 6%;
  bottom: 0;
}

.plate .brick__face {
  width: 100%;
  height: 74px;
  background: transparent;
  border-style: dashed;
  border-color: rgba(124, 156, 203, 0.5);
  color: var(--color-highlight);
  letter-spacing: 0.2em;
}

@media (hover: hover) {
  .brick:hover .brick__face {
    transform: translateY(-6px) rotate(-2deg);
    border-color: var(--color-primary-light);
  }

  .b-ai:hover .brick__face {
    transform: translateY(-6px) rotate(2deg);
  }
}

.stage-caption {
  margin-top: 16px;
  text-align: right;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-primary);
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(240px, 0.75fr);
  gap: 72px;
  align-items: start;
}

.rail-block__label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.rail {
  list-style: none;
  margin: 0;
  padding: 8px 0 0;
}

.rail li {
  position: relative;
  padding: 14px 0 14px 36px;
  border-top: 1px solid var(--color-border);
  font-size: 18px;
}

.rail li:last-child {
  border-bottom: 1px solid var(--color-border);
}

.rail li::before {
  content: counter(rail);
  counter-increment: rail;
  position: absolute;
  left: 0;
  top: 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-primary);
}

.rail {
  counter-reset: rail;
}

.rail-block__note {
  margin-top: 20px;
  color: var(--color-text-secondary);
  font-size: 16px;
}

.steps {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 28px;
  margin-top: 72px;
}

.step {
  padding-top: 20px;
  border-top: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.step__index {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--color-primary);
}

.step__lead {
  color: var(--color-text);
  font-weight: 600;
}

.step__body {
  color: var(--color-text-secondary);
  font-size: 16px;
  line-height: 1.7;
}

.philosophy {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 64px;
  align-items: end;
}

#units.section {
  padding-block: 0;
}

.section-intro {
  padding-top: var(--section-padding);
  padding-bottom: 24px;
  max-width: 760px;
}

.section-intro h2 {
  max-width: 10em;
}

.unit {
  padding-block: 96px;
}

.unit--alt {
  background: var(--color-bg-secondary);
  border-block: 1px solid var(--color-border);
}

.unit__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(260px, 0.85fr);
  gap: 64px;
  align-items: center;
}

.unit__grid--reverse .unit__copy {
  order: 2;
}

.unit__label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-primary);
}

.sequence {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 0;
  list-style: none;
  color: var(--color-text);
  font-size: 15px;
}

.sequence li:not(:last-child)::after {
  content: "→";
  margin-inline: 10px;
  color: var(--color-primary);
}

.pixel-stage {
  position: relative;
  width: min(100%, 360px);
  aspect-ratio: 1;
  margin-left: auto;
  background-color: var(--color-card);
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 25% 25%;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.px {
  position: absolute;
  width: 16%;
  aspect-ratio: 1;
  left: calc(10% + var(--x) * 18%);
  top: calc(10% + var(--y) * 18%);
  background: #0d1428;
  border-radius: 3px;
  transition: transform 0.35s ease;
}

.px.on { background: var(--color-primary); }
.px.hot { background: var(--color-accent); }

.pixel-cursor {
  position: absolute;
  width: 16%;
  aspect-ratio: 1;
  left: calc(10% + 3 * 18%);
  top: calc(10% + 2 * 18%);
  border: 1.5px solid var(--color-highlight);
  border-radius: 3px;
  transform: translate(8px, 8px);
}

.code-chip {
  position: absolute;
  left: 20px;
  bottom: 18px;
  color: var(--color-primary-light);
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
}

@media (hover: hover) {
  .pixel-stage:hover .px.on,
  .pixel-stage:hover .px.hot {
    transform: translateY(-6px);
  }
}

.flow {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  position: relative;
  padding-top: 18px;
}

.flow::before {
  content: "";
  position: absolute;
  top: 27px;
  left: 10%;
  right: 10%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-primary), var(--color-accent), transparent);
}

.flow__node {
  position: relative;
  padding-top: 36px;
  text-align: center;
  font-size: 15px;
  color: var(--color-text);
}

.flow__node::before {
  content: "";
  position: absolute;
  top: 4px;
  left: 50%;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-primary);
  transform: translateX(-50%);
  box-shadow: 0 0 0 6px rgba(124, 156, 203, 0.12);
}

.flow__node span {
  display: block;
  margin-bottom: 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--color-primary);
}

.flow__node:last-child::before {
  background: var(--color-accent);
  box-shadow: 0 0 0 6px rgba(155, 124, 255, 0.14);
}

.world-stage {
  position: relative;
  width: min(100%, 380px);
  aspect-ratio: 1;
  margin-left: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background:
    radial-gradient(circle at 30% 40%, rgba(124, 156, 203, 0.16), transparent 42%),
    radial-gradient(circle at 70% 60%, rgba(155, 124, 255, 0.14), transparent 40%),
    var(--color-card);
  overflow: hidden;
}

.world-orb {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(168, 196, 240, 0.35);
}

.world-orb--a {
  width: 54%;
  aspect-ratio: 1;
  left: 12%;
  top: 18%;
}

.world-orb--b {
  width: 38%;
  aspect-ratio: 1;
  right: 10%;
  top: 14%;
  border-color: rgba(155, 124, 255, 0.45);
}

.world-orb--c {
  width: 46%;
  aspect-ratio: 1;
  left: 28%;
  bottom: 12%;
}

.world-block {
  position: absolute;
  width: 54px;
  height: 54px;
  left: 42%;
  top: 40%;
  border-radius: 8px;
  background: var(--color-primary);
  box-shadow: 14px 14px 0 rgba(155, 124, 255, 0.45);
}

.world-particle {
  position: absolute;
  width: 6px;
  height: 6px;
  border-radius: 1px;
  background: var(--color-highlight);
}

.world-particle--a { top: 22%; right: 24%; }
.world-particle--b { top: 62%; left: 18%; background: var(--color-primary-light); }
.world-particle--c { bottom: 22%; right: 18%; background: var(--color-accent); }

.world-stage__label {
  position: absolute;
  left: 20px;
  bottom: 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--color-primary-light);
}

.lms {
  list-style: none;
  margin-top: 64px;
  display: flex;
  flex-direction: column;
}

.lms li {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 16px;
  align-items: baseline;
  padding-block: 28px;
  border-top: 1px solid var(--color-border);
}

.lms li:last-child {
  border-bottom: 1px solid var(--color-border);
}

.lms__no {
  font-family: var(--font-mono);
  color: var(--color-primary);
  letter-spacing: 0.12em;
}

.lms h3 {
  font-size: clamp(40px, 5vw, 72px);
  margin-bottom: 8px;
}

.lms p {
  color: var(--color-text-secondary);
}

.mirror {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(240px, 0.7fr);
  gap: 64px;
  align-items: center;
}

.mirror-results {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 0;
}

.mirror-results li {
  color: var(--color-highlight);
  font-size: clamp(22px, 2.4vw, 28px);
  font-weight: 700;
  letter-spacing: -0.03em;
}

.resonance {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  min-height: 460px;
  justify-content: center;
}

.resonance__tag {
  font-family: var(--font-mono);
  letter-spacing: 0.16em;
  font-size: 13px;
  color: var(--color-primary-light);
}

.resonance__tag--end {
  color: var(--color-highlight);
}

.resonance__orb {
  width: 132px;
  height: 132px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  font-family: var(--font-mono);
  letter-spacing: 0.14em;
  font-size: 13px;
}

.resonance__orb--ai {
  border-color: rgba(155, 124, 255, 0.6);
  color: var(--color-highlight);
  box-shadow: 0 0 32px rgba(155, 124, 255, 0.16);
}

.resonance__wave {
  position: relative;
  width: 2px;
  height: 48px;
  background: linear-gradient(var(--color-primary), var(--color-accent));
}

.resonance__wave::before,
.resonance__wave::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 64px;
  height: 64px;
  border-radius: 50%;
  border: 1px solid rgba(124, 156, 203, 0.45);
  animation: pulse 3.8s ease-out infinite;
}

.resonance__wave::after {
  animation-delay: 1.3s;
  border-color: rgba(155, 124, 255, 0.4);
}

@keyframes pulse {
  from {
    transform: translate(-50%, -50%) scale(0.35);
    opacity: 0.75;
  }
  to {
    transform: translate(-50%, -50%) scale(1.35);
    opacity: 0;
  }
}

.rinka {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(260px, 0.9fr);
  gap: 64px;
  align-items: center;
}

blockquote {
  margin: 8px 0 0;
  padding-left: 16px;
  border-left: 2px solid var(--color-primary);
  color: var(--color-highlight);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.45;
}

.log {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 22px 22px 8px;
}

.log__bar {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 12px;
  color: var(--color-text-secondary);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
}

.log__bar span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-primary);
}

.log__bar span:nth-child(2) { background: var(--color-primary-light); }
.log__bar span:nth-child(3) { background: var(--color-accent); margin-right: 8px; }

.log__list {
  list-style: none;
  padding: 0;
}

.log__list li {
  display: flex;
  gap: 14px;
  align-items: baseline;
  padding-block: 14px;
  border-top: 1px solid var(--color-border);
  font-size: 16px;
}

.log__list li::before {
  content: counter(log, decimal-leading-zero);
  counter-increment: log;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-primary);
}

.log__list {
  counter-reset: log;
}

.eco {
  margin-top: 72px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.eco__root,
.eco__maker,
.eco__world {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.eco__root {
  font-size: 14px;
  color: var(--color-primary-light);
}

.eco__stem {
  width: 1px;
  height: 36px;
  background: rgba(124, 156, 203, 0.7);
}

.eco__stem--short {
  height: 24px;
}

.eco__cols {
  width: min(100%, 840px);
  list-style: none;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  position: relative;
  padding-top: 28px;
}

.eco__cols::before {
  content: "";
  position: absolute;
  top: 0;
  left: 16%;
  right: 16%;
  height: 1px;
  background: rgba(124, 156, 203, 0.7);
}

.eco__cols li {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding-top: 28px;
  text-align: center;
}

.eco__cols li::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  width: 1px;
  height: 28px;
  background: rgba(124, 156, 203, 0.7);
}

.eco__name {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.03em;
  font-size: 22px;
}

.eco__verb {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-primary);
}

.eco__maker {
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--color-text);
}

.eco__world {
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--color-highlight);
}

.eco-copy {
  margin-top: 72px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.closing {
  font-family: var(--font-sans);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.25;
  font-size: clamp(32px, 4vw, 56px);
  color: var(--color-highlight);
}

.cta {
  min-height: 100svh;
  display: flex;
  align-items: center;
}

.cta__inner {
  width: min(100%, 860px);
  margin-inline: auto;
  text-align: center;
  align-items: center;
  gap: 28px;
}

.cta h2 {
  font-size: clamp(48px, 7vw, 104px);
}

.cta .lead {
  max-width: none;
}

.cta__slogan {
  margin-top: 36px;
  font-size: clamp(28px, 4vw, 48px);
  color: var(--color-text);
}

.footer {
  border-top: 1px solid var(--color-border);
  padding-top: 48px;
  padding-bottom: 28px;
  background: var(--color-bg);
}

.footer__grid {
  display: flex;
  justify-content: space-between;
  gap: 32px;
  align-items: start;
}

.footer__ko {
  color: var(--color-text-secondary);
}

.footer__nav {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  justify-content: flex-end;
}

.footer__nav a {
  color: var(--color-text-secondary);
}

.footer__nav a:hover {
  color: var(--color-text);
}

.footer__bar {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  font-size: 14px;
}

.js .reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

@media (max-width: 1023px) {
  :root {
    --section-padding: 112px;
  }

  .hero h1 {
    max-width: none;
  }

  .hero__layout,
  .split,
  .philosophy,
  .unit__grid,
  .mirror,
  .rinka {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .unit__grid--reverse .unit__copy {
    order: 0;
  }

  .pixel-stage,
  .world-stage {
    margin-left: 0;
  }

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

  .stage {
    height: 420px;
    margin-left: 0;
  }
}

@media (max-width: 767px) {
  :root {
    --section-padding: 80px;
  }

  body {
    font-size: 16px;
  }

  .container {
    width: calc(100% - 40px);
  }

  .prose {
    font-size: 16px;
  }

  .header__bar {
    display: flex;
    justify-content: space-between;
  }

  .nav-toggle {
    display: inline-block;
  }

  .nav-cta {
    display: none;
  }

  .nav-menu {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    gap: 4px;
    padding: 28px 24px 40px;
    background: rgba(11, 16, 32, 0.98);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
  }

  .header.is-open .nav-menu {
    opacity: 1;
    visibility: visible;
    transform: none;
  }

  .nav-menu a {
    font-family: var(--font-display);
    font-size: 32px;
    font-weight: 700;
    letter-spacing: -0.04em;
    color: var(--color-text);
    padding-block: 8px;
  }

  .nav-cta-mobile {
    display: inline-flex;
    margin-top: 20px;
    font-size: 16px;
    letter-spacing: -0.02em;
  }

  body.nav-open {
    overflow: hidden;
  }

  .hero {
    min-height: auto;
    padding-top: calc(var(--header-height) + 36px);
    padding-bottom: 64px;
  }

  .hero h1 {
    font-size: clamp(42px, 12vw, 64px);
  }

  .stage {
    height: auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }

  .brick,
  .plate {
    position: static;
    transform: none;
  }

  .b-auto,
  .plate {
    grid-column: 1 / -1;
  }

  .brick__face,
  .plate .brick__face {
    width: 100%;
    animation: none;
  }

  .hero__visual::before {
    display: none;
  }

  .stage-caption {
    text-align: left;
  }

  .steps,
  .eco__cols,
  .flow {
    grid-template-columns: 1fr;
  }

  .flow {
    padding-top: 0;
    padding-left: 8px;
  }

  .flow::before {
    top: 12px;
    bottom: 12px;
    left: 4px;
    right: auto;
    width: 1px;
    height: auto;
    background: rgba(124, 156, 203, 0.6);
  }

  .flow__node {
    text-align: left;
    padding: 12px 0 12px 28px;
  }

  .flow__node::before {
    left: 0;
    top: 22px;
    transform: none;
  }

  .lms li {
    grid-template-columns: 48px 1fr;
  }

  .eco {
    align-items: flex-start;
  }

  .eco__cols {
    padding-top: 12px;
    padding-left: 16px;
  }

  .eco__cols::before {
    left: 0;
    right: auto;
    top: 0;
    bottom: 0;
    width: 1px;
    height: auto;
  }

  .eco__cols li {
    align-items: flex-start;
    text-align: left;
    padding-top: 18px;
  }

  .eco__cols li::before {
    display: none;
  }

  .unit {
    padding-block: 72px;
  }

  .cta .btn--large {
    width: 100%;
  }

  .footer__grid,
  .footer__bar {
    flex-direction: column;
  }

  .footer__nav {
    justify-content: flex-start;
  }

  .resonance__wave::before,
  .resonance__wave::after {
    animation: none;
    opacity: 0.45;
    transform: translate(-50%, -50%) scale(0.8);
  }
}

@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,
  .brick__face {
    opacity: 1 !important;
    transform: none !important;
  }
}