:root {
  color-scheme: dark;
  --bg: #020303;
  --bg-panel: rgba(255, 255, 255, 0.022);
  --text: #f5f7f7;
  --muted: #a5adb0;
  --dim: #697174;
  --line: rgba(255, 255, 255, 0.13);
  --line-soft: rgba(255, 255, 255, 0.075);
  --cyan: #75e7ff;
  --cyan-soft: rgba(117, 231, 255, 0.34);
  --mono: "IBM Plex Mono", "SFMono-Regular", "Cascadia Mono", Consolas,
    monospace;
  --sans: "IBM Plex Sans", "Aptos", "Helvetica Neue", Helvetica, sans-serif;
  --page-pad: 48px;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--bg);
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  margin: 0;
  background:
    linear-gradient(rgba(255, 255, 255, 0.026) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.022) 1px, transparent 1px),
    radial-gradient(circle at 11% 18%, rgba(117, 231, 255, 0.055), transparent 26%),
    linear-gradient(180deg, #020303 0%, #070808 48%, #020303 100%);
  background-size: 80px 80px, 80px 80px, auto, auto;
  color: var(--text);
  font-family: var(--sans);
  line-height: 1.55;
  letter-spacing: 0;
}

body::after {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    linear-gradient(180deg, rgba(2, 3, 3, 0.1), rgba(2, 3, 3, 0.94)),
    repeating-linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.018) 0,
      rgba(255, 255, 255, 0.018) 1px,
      transparent 1px,
      transparent 6px
    );
  content: "";
}

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

p,
h1,
h2,
h3,
pre {
  margin: 0;
}

p {
  color: var(--muted);
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 20;
  display: flex;
  width: 100%;
  align-items: center;
  justify-content: space-between;
  padding: 24px var(--page-pad);
  border-bottom: 1px solid rgba(255, 255, 255, 0.055);
  background: rgba(2, 3, 3, 0.72);
  backdrop-filter: blur(18px);
  font-family: var(--mono);
}

.brand-mark,
.nav-links a,
.site-footer a {
  color: rgba(245, 247, 247, 0.86);
  font-size: 0.72rem;
  line-height: 1;
  text-transform: uppercase;
}

.brand-mark {
  color: var(--text);
}

.nav-links {
  display: flex;
  gap: 26px;
}

.nav-links a,
.site-footer a {
  transition: color 180ms ease;
}

.nav-links a:hover,
.site-footer a:hover {
  color: var(--cyan);
}

.section-shell {
  width: min(100%, 1480px);
  margin: 0 auto;
  padding: 126px var(--page-pad);
}

.hero {
  display: grid;
  min-height: 88svh;
  align-items: center;
  gap: clamp(44px, 6vw, 96px);
  grid-template-columns: minmax(420px, 0.96fr) minmax(420px, 1.04fr);
  padding-top: 104px;
  padding-bottom: 66px;
}

.hero-visual {
  position: relative;
  min-height: min(650px, calc(100svh - 190px));
  border: 1px solid var(--line);
  background:
    linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    rgba(255, 255, 255, 0.014);
  background-size: 54px 54px;
  overflow: hidden;
}

.hero-visual::before,
.hero-visual::after {
  position: absolute;
  pointer-events: none;
  content: "";
}

.hero-visual::before {
  inset: 26px;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.hero-visual::after {
  right: 0;
  bottom: 0;
  width: 42%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--cyan-soft));
}

#routing-canvas {
  display: block;
  width: 100%;
  height: 100%;
  min-height: inherit;
}

.visual-frame {
  position: absolute;
  inset: 52px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  pointer-events: none;
}

.visual-frame::before,
.visual-frame::after {
  position: absolute;
  width: 72px;
  height: 1px;
  background: var(--cyan-soft);
  content: "";
}

.visual-frame::before {
  top: -1px;
  left: 0;
}

.visual-frame::after {
  right: 0;
  bottom: -1px;
}

.visual-readout {
  position: absolute;
  left: 28px;
  padding: 9px 11px;
  border-left: 1px solid var(--cyan-soft);
  background: rgba(2, 3, 3, 0.74);
  color: rgba(245, 247, 247, 0.74);
  font-family: var(--mono);
  font-size: 0.68rem;
  line-height: 1;
}

.readout-top {
  top: 28px;
}

.readout-bottom {
  bottom: 28px;
}

.hero-copy {
  max-width: 720px;
  min-width: 0;
}

.eyebrow {
  color: var(--cyan);
  font-family: var(--mono);
  font-size: 0.74rem;
  line-height: 1.2;
  text-transform: uppercase;
}

.eyebrow::after {
  display: inline-block;
  width: 7px;
  height: 1em;
  margin-left: 9px;
  background: var(--cyan);
  vertical-align: -0.15em;
  content: "";
  animation: cursor-blink 1.25s steps(2, start) infinite;
}

h1,
h2,
h3 {
  color: var(--text);
  font-family: var(--mono);
  font-weight: 500;
  letter-spacing: 0;
}

h1 {
  max-width: 660px;
  margin-top: 22px;
  font-size: 7.4rem;
  line-height: 0.88;
}

h2 {
  max-width: 980px;
  margin-top: 18px;
  font-size: 4.4rem;
  line-height: 0.96;
}

h3 {
  font-size: 1rem;
  line-height: 1.35;
}

.hero-lede {
  max-width: 680px;
  margin-top: 34px;
  color: var(--text);
  font-size: 1.62rem;
  line-height: 1.25;
}

.hero-points {
  display: grid;
  gap: 8px;
  max-width: 100%;
  min-width: 0;
  margin-top: 30px;
}

.hero-points p {
  color: rgba(245, 247, 247, 0.76);
  font-family: var(--mono);
  font-size: 0.86rem;
  min-width: 0;
  max-width: 100%;
  overflow-wrap: break-word;
}

.hero-points p::before {
  color: var(--cyan);
  content: "/ ";
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 38px;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 0.74rem;
  line-height: 1;
  text-transform: uppercase;
  transition:
    border-color 180ms ease,
    background 180ms ease,
    color 180ms ease,
    transform 180ms ease;
}

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

.button-primary {
  padding: 0 22px;
  background: var(--text);
  color: #020303;
}

.button-secondary {
  padding: 0 20px;
  background: rgba(255, 255, 255, 0.02);
  color: var(--text);
}

.button-secondary:hover {
  border-color: var(--cyan-soft);
  color: var(--cyan);
}

.technical-strip {
  display: flex;
  width: fit-content;
  max-width: 100%;
  flex-wrap: wrap;
  gap: 8px 10px;
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--line-soft);
  color: var(--dim);
  font-family: var(--mono);
  font-size: 0.74rem;
}

.technical-strip span + span::before {
  margin-right: 10px;
  color: rgba(245, 247, 247, 0.28);
  content: "·";
}

.mobile-break {
  display: none;
}

.section-heading {
  max-width: 1020px;
}

.section-heading > p:not(.eyebrow) {
  max-width: 760px;
  margin-top: 24px;
  font-size: 1.04rem;
}

.proof,
.architecture,
.stack,
.phases,
.use-cases,
.closing {
  border-top: 1px solid var(--line-soft);
}

.proof-grid {
  display: grid;
  gap: 1px;
  margin-top: 66px;
  background: var(--line-soft);
  grid-template-columns: minmax(420px, 0.92fr) minmax(460px, 1.08fr);
}

.terminal-block,
.proof-cards,
.stack-card,
.phase-card,
.use-case-grid article {
  background: rgba(2, 3, 3, 0.87);
}

.terminal-block {
  min-height: 430px;
  padding: 30px;
}

.terminal-bar {
  display: flex;
  gap: 8px;
  margin-bottom: 42px;
}

.terminal-bar span {
  display: block;
  width: 7px;
  height: 7px;
  border: 1px solid rgba(255, 255, 255, 0.28);
}

.terminal-block pre {
  color: var(--text);
  font-family: var(--mono);
  font-size: 1.18rem;
  line-height: 2.05;
  white-space: pre-wrap;
}

.terminal-block code {
  font: inherit;
}

.terminal-block code::after {
  display: inline-block;
  width: 8px;
  height: 1.1em;
  margin-left: 8px;
  background: var(--cyan);
  vertical-align: -0.16em;
  content: "";
  animation: cursor-blink 1.25s steps(2, start) infinite;
}

.proof-cards {
  display: grid;
}

.proof-card {
  min-height: 142px;
  padding: 30px;
  border-bottom: 1px solid var(--line-soft);
}

.proof-card:last-child {
  border-bottom: 0;
}

.card-index,
.phase-label {
  display: block;
  margin-bottom: 18px;
  color: var(--cyan);
  font-family: var(--mono);
  font-size: 0.68rem;
  line-height: 1;
  text-transform: uppercase;
}

.proof-card p,
.stack-card p,
.phase-card p {
  max-width: 560px;
  margin-top: 14px;
  font-size: 0.96rem;
}

.architecture-layout {
  display: grid;
  gap: 70px;
  margin-top: 68px;
  grid-template-columns: minmax(360px, 0.85fr) minmax(420px, 1.15fr);
}

.architecture-copy {
  display: grid;
  align-content: start;
  gap: 24px;
  max-width: 650px;
}

.architecture-copy p {
  font-size: 1.03rem;
}

.route-mantra {
  display: grid;
  gap: 10px;
  margin-top: 18px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
}

.route-mantra p {
  color: var(--text);
  font-family: var(--mono);
}

.architecture-diagram {
  position: relative;
  min-height: 520px;
  border: 1px solid var(--line);
  background:
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    rgba(255, 255, 255, 0.01);
  background-size: 46px 46px;
  overflow: hidden;
}

.architecture-diagram::before {
  position: absolute;
  inset: 58px;
  border: 1px dashed rgba(255, 255, 255, 0.12);
  content: "";
  transform: rotate(-9deg);
}

.diagram-node {
  position: absolute;
  z-index: 2;
  width: max-content;
  padding: 10px 12px;
  border: 1px solid var(--line);
  background: rgba(2, 3, 3, 0.92);
  color: var(--text);
  font-family: var(--mono);
  font-size: 0.68rem;
  line-height: 1;
}

.diagram-node::before {
  display: inline-block;
  width: 7px;
  height: 7px;
  margin-right: 8px;
  border: 1px solid var(--cyan);
  content: "";
  transform: rotate(45deg);
}

.node-user {
  top: 17%;
  left: 11%;
}

.node-relay {
  top: 43%;
  left: 42%;
}

.node-app {
  top: 21%;
  right: 10%;
}

.node-gateway {
  right: 15%;
  bottom: 16%;
}

.diagram-line {
  position: absolute;
  height: 1px;
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.18), var(--cyan-soft));
  transform-origin: left center;
}

.line-a {
  top: 31%;
  left: 21%;
  width: 43%;
  transform: rotate(18deg);
}

.line-b {
  top: 48%;
  left: 48%;
  width: 34%;
  transform: rotate(-24deg);
}

.line-c {
  top: 55%;
  left: 49%;
  width: 37%;
  transform: rotate(35deg);
}

.stack-grid {
  display: grid;
  gap: 1px;
  margin-top: 68px;
  background: var(--line-soft);
  grid-template-columns: repeat(4, 1fr);
}

.stack-card {
  min-height: 335px;
  padding: 30px;
}

.stack-card h3 {
  max-width: 220px;
}

.stack-card::after {
  display: block;
  width: 34px;
  height: 1px;
  margin-top: 42px;
  background: var(--cyan-soft);
  content: "";
}

.phase-list {
  position: relative;
  display: grid;
  gap: 0;
  margin-top: 70px;
}

.phase-list::before {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 16px;
  width: 1px;
  background: linear-gradient(180deg, transparent, var(--cyan-soft), transparent);
  content: "";
}

.phase-card {
  position: relative;
  width: min(820px, calc(100% - 72px));
  margin-left: 72px;
  padding: 42px 0 46px 44px;
  border-top: 1px solid var(--line-soft);
  background: transparent;
}

.phase-card:nth-child(even) {
  margin-left: auto;
}

.phase-card::before {
  position: absolute;
  top: 49px;
  left: -64px;
  width: 15px;
  height: 15px;
  border: 1px solid var(--cyan-soft);
  background: var(--bg);
  content: "";
  transform: rotate(45deg);
}

.phase-card h3 {
  max-width: 640px;
  font-size: 1.82rem;
}

.phase-card p {
  max-width: 680px;
}

.use-case-grid {
  display: grid;
  gap: 1px;
  margin-top: 68px;
  background: var(--line-soft);
  grid-template-columns: repeat(3, 1fr);
}

.use-case-grid article {
  min-height: 156px;
  padding: 28px;
  color: var(--text);
  font-family: var(--mono);
  font-size: 0.94rem;
}

.use-case-grid article::before {
  display: block;
  width: 28px;
  height: 1px;
  margin-bottom: 26px;
  background: var(--cyan-soft);
  content: "";
}

.closing {
  display: grid;
  align-items: end;
  gap: 56px;
  grid-template-columns: minmax(0, 1fr) auto;
}

.closing h2 {
  max-width: 1120px;
  margin-top: 0;
  font-size: 4.45rem;
}

.closing p {
  max-width: 760px;
  margin-top: 26px;
  font-size: 1.05rem;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 30px var(--page-pad) 42px;
  border-top: 1px solid var(--line-soft);
  font-family: var(--mono);
}

.site-footer p {
  color: var(--dim);
  font-size: 0.74rem;
}

.site-footer nav {
  display: flex;
  gap: 22px;
}

@keyframes cursor-blink {
  0%,
  46% {
    opacity: 1;
  }
  47%,
  100% {
    opacity: 0;
  }
}

@media (max-width: 1160px) {
  .hero,
  .proof-grid,
  .architecture-layout,
  .closing {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .hero-visual {
    min-height: 520px;
    order: 2;
  }

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

  .phase-card,
  .phase-card:nth-child(even) {
    width: calc(100% - 72px);
    margin-left: 72px;
  }
}

@media (max-width: 780px) {
  :root {
    --page-pad: 20px;
  }

  body {
    background-size: 58px 58px, 58px 58px, auto, auto;
  }

  .site-header {
    position: absolute;
    padding-top: 22px;
    background: transparent;
    backdrop-filter: none;
  }

  .nav-links {
    display: none;
  }

  .section-shell {
    padding-top: 88px;
    padding-bottom: 88px;
  }

  .hero {
    gap: 48px;
    padding-top: 98px;
  }

  h1 {
    font-size: 4.05rem;
  }

  h2 {
    font-size: 2.45rem;
  }

  .hero-lede {
    font-size: 1.18rem;
  }

  .hero-points p {
    position: relative;
    padding-left: 16px;
    font-size: 0.76rem;
    overflow-wrap: anywhere;
  }

  .hero-points p::before {
    position: absolute;
    left: 0;
  }

  .mobile-break {
    display: block;
  }

  .terminal-block pre {
    font-size: 0.9rem;
  }

  .phase-card h3 {
    font-size: 1.42rem;
  }

  .closing h2 {
    font-size: 2.25rem;
  }

  .hero-visual {
    min-height: 360px;
  }

  .visual-frame {
    inset: 30px;
  }

  .visual-readout {
    left: 18px;
    font-size: 0.62rem;
  }

  .readout-top {
    top: 18px;
  }

  .readout-bottom {
    bottom: 18px;
  }

  .button {
    width: 100%;
  }

  .technical-strip {
    display: grid;
    width: 100%;
    gap: 4px;
    line-height: 1.55;
  }

  .technical-strip span + span::before {
    content: "";
    margin: 0;
  }

  .terminal-block {
    min-height: 330px;
    padding: 24px;
  }

  .proof-card,
  .stack-card,
  .use-case-grid article {
    padding: 24px;
  }

  .architecture-diagram {
    min-height: 420px;
  }

  .diagram-node {
    font-size: 0.6rem;
  }

  .node-user {
    left: 8%;
  }

  .node-app {
    right: 6%;
  }

  .node-gateway {
    right: 8%;
  }

  .stack-grid,
  .use-case-grid {
    grid-template-columns: 1fr;
  }

  .stack-card {
    min-height: 230px;
  }

  .phase-list::before {
    left: 6px;
  }

  .phase-card,
  .phase-card:nth-child(even) {
    width: calc(100% - 34px);
    margin-left: 34px;
    padding: 34px 0 38px 22px;
  }

  .phase-card::before {
    left: -35px;
    width: 11px;
    height: 11px;
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 1ms !important;
  }
}