:root {
  --signal-black: #070b08;
  --signal-chalk: #e7e2d7;
  --signal-muted: rgba(231, 226, 215, .48);
  --signal-faint: rgba(231, 226, 215, .24);
  --signal-amber: #d7832f;
  --display: "Barlow Condensed", "Arial Narrow", sans-serif;
  --body: "Atkinson Hyperlegible Next", Arial, sans-serif;
  --mono: "IBM Plex Mono", monospace;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html,
body {
  min-width: 320px;
  min-height: 100%;
  background: var(--signal-black);
}

body {
  color: var(--signal-chalk);
  font-family: var(--body);
  -webkit-font-smoothing: antialiased;
}

button,
a {
  color: inherit;
}

button {
  font: inherit;
}

.landing-shell {
  position: relative;
  display: grid;
  grid-template-rows: auto 1fr;
  width: 100%;
  min-height: 100vh;
  min-height: 100svh;
  overflow: hidden;
  padding: clamp(24px, 4vw, 52px) clamp(20px, 4vw, 64px) clamp(16px, 2.4vw, 34px);
}

.site-header {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(260px, 1fr) minmax(280px, 330px);
  gap: 48px;
}

.site-nav {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: clamp(20px, 2.6vw, 36px);
  align-self: start;
}

.brain-map-link {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: rgba(231, 226, 215, .66);
  font: 400 .68rem/1 var(--mono);
  letter-spacing: .025em;
  text-decoration: none;
  transition: color .18s ease;
}

.network-mark {
  width: 32px;
  height: 21px;
  overflow: visible;
}

.network-mark path {
  fill: none;
  stroke: rgba(231, 226, 215, .26);
  stroke-width: 1;
}

.network-mark circle {
  fill: var(--signal-black);
  stroke: var(--signal-amber);
  stroke-width: 1.25;
  transition: fill .18s ease;
}

.network-mark .network-core {
  fill: var(--signal-amber);
}

.brain-map-link:hover,
.brain-map-link:focus-visible {
  color: var(--signal-chalk);
}

.brain-map-link:hover .network-mark circle,
.brain-map-link:focus-visible .network-mark circle {
  fill: var(--signal-amber);
}

.nav-tab {
  appearance: none;
  padding: 0;
  border: 0;
  color: var(--signal-muted);
  background: transparent;
  font: 500 .82rem/1 var(--mono);
  letter-spacing: .02em;
  cursor: pointer;
  transition: color .18s ease;
}

.tab-prompt {
  color: var(--signal-faint);
  transition: color .18s ease;
}

.nav-tab:hover .tab-prompt,
.nav-tab:focus-visible .tab-prompt,
.nav-tab.is-active .tab-prompt {
  color: var(--signal-amber);
}

.nav-tab:hover,
.nav-tab:focus-visible,
.nav-tab.is-active {
  color: var(--signal-chalk);
}

.nav-tab:focus-visible,
.brain-map-link:focus-visible,
.email:focus-visible {
  outline: 1px solid var(--signal-amber);
  outline-offset: 5px;
}

.panel-stack {
  min-height: 132px;
}

.info-panel {
  max-width: 360px;
  color: rgba(231, 226, 215, .7);
  font-size: .96rem;
  font-weight: 500;
  line-height: 1.42;
  opacity: 0;
  transform: translateY(4px);
}

.panel-intro {
  margin-bottom: 18px;
  color: var(--signal-chalk);
}

.lane-list {
  list-style: none;
  display: grid;
  gap: 12px;
  margin-bottom: 18px;
  font: 400 .8rem/1.55 var(--mono);
}

.lane-list li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 10px;
  align-items: baseline;
}

.lane-key {
  color: var(--signal-amber);
  font-size: .72rem;
}

.panel-note {
  color: var(--signal-muted);
  font-size: .82rem;
}

.info-panel.is-active {
  animation: panel-in .28s ease forwards;
}

.info-panel p + p {
  margin-top: 21px;
}

.email {
  display: inline-block;
  margin-bottom: 26px;
  color: var(--signal-chalk);
  font: 500 .78rem/1.4 var(--mono);
  overflow-wrap: anywhere;
  text-decoration-color: var(--signal-faint);
  text-underline-offset: 5px;
  cursor: pointer;
}

.email:hover,
.email:focus-visible {
  color: var(--signal-amber);
  text-decoration-color: var(--signal-amber);
}

.wordmark {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: flex-end;
  align-self: end;
  width: 100%;
  color: var(--signal-chalk);
  font-family: var(--display);
  font-size: clamp(4.6rem, 26vw, 24rem);
  font-weight: 700;
  line-height: .69;
  letter-spacing: -.035em;
  text-transform: uppercase;
  white-space: nowrap;
}

.wordmark-cursor {
  display: inline-block;
  align-self: flex-end;
  width: .34em;
  height: .62em;
  margin-left: .07em;
  background: var(--signal-amber);
  animation: cursor-blink 1.15s steps(1) infinite;
}

@keyframes cursor-blink {
  50% {
    opacity: 0;
  }
}

::selection {
  color: var(--signal-black);
  background: var(--signal-amber);
}

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

@keyframes panel-in {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 720px) {
  .landing-shell {
    min-height: 100svh;
    padding: 22px 18px 18px;
  }

  .site-header {
    grid-template-columns: 1fr;
    gap: 42px;
  }

  .site-nav {
    column-gap: 28px;
    row-gap: 18px;
  }

  .brain-map-link {
    flex-basis: 100%;
  }

  .panel-stack {
    min-height: 150px;
    padding-left: 0;
  }

  .wordmark {
    font-size: clamp(2.9rem, 25vw, 7rem);
    line-height: .7;
  }
}

@media (max-height: 590px) and (min-width: 721px) {
  .landing-shell {
    padding-top: 24px;
    padding-bottom: 18px;
  }

  .panel-stack {
    min-height: 110px;
  }

  .info-panel p + p {
    margin-top: 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: .01ms !important;
    transition-duration: .01ms !important;
  }

  .wordmark-cursor {
    animation: none;
    opacity: 1;
  }
}