:root {
  --bg: #07090a;
  --surface: #0c1012;
  --surface-strong: #101518;
  --text: #f3f5f3;
  --muted: #8c989d;
  --muted-strong: #bcc5c8;
  --line: rgba(213, 224, 227, 0.16);
  --line-soft: rgba(213, 224, 227, 0.08);
  --accent: #b8d9f2;
  --accent-bright: #e5f3ff;
  --max-width: 1180px;
  --page-pad: clamp(1.35rem, 4vw, 4.5rem);
  --sans: "Helvetica Neue", Helvetica, Arial, ui-sans-serif, system-ui, sans-serif;
  --mono: "SFMono-Regular", "Roboto Mono", "Cascadia Code", Consolas, monospace;
}

* {
  box-sizing: border-box;
}

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

body {
  min-width: 320px;
  margin: 0;
  background:
    radial-gradient(circle at 78% 6%, rgba(93, 127, 153, 0.14), transparent 28rem),
    radial-gradient(circle at 9% 38%, rgba(65, 84, 98, 0.09), transparent 26rem),
    var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body::before {
  position: fixed;
  z-index: -1;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.018) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(to bottom, black, transparent 68%);
  content: "";
}

::selection {
  background: rgba(184, 217, 242, 0.3);
  color: var(--text);
}

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

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

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

.site-header {
  position: relative;
  z-index: 10;
  border-bottom: 1px solid var(--line-soft);
}

.header-inner,
.page-shell,
.site-footer-inner {
  width: min(calc(100% - (var(--page-pad) * 2)), var(--max-width));
  margin: 0 auto;
}

.header-inner {
  display: flex;
  min-height: 82px;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
  gap: 0.65rem;
}

.brand .brand-icon {
  width: 36px;
  height: auto;
}

.brand .brand-wordmark {
  width: 128px;
  height: auto;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 2.7vw, 2.6rem);
}

.site-nav a,
.menu-toggle {
  color: var(--muted-strong);
  font-family: var(--mono);
  font-size: 0.69rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  transition: color 180ms ease;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--accent-bright);
}

.menu-toggle {
  display: none;
  border: 0;
  padding: 0.4rem 0;
  background: transparent;
  cursor: pointer;
}

.page-shell {
  padding-bottom: 9rem;
}

.hero {
  display: grid;
  min-height: min(780px, calc(100vh - 82px));
  grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.9fr);
  align-items: center;
  gap: clamp(2rem, 6vw, 8rem);
  padding: clamp(5rem, 12vh, 10rem) 0 clamp(5rem, 11vh, 9rem);
}

.eyebrow,
.section-index,
.meta,
.card-kicker {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.15em;
  line-height: 1.5;
  text-transform: uppercase;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.eyebrow::before {
  width: 1.9rem;
  height: 1px;
  background: var(--accent);
  content: "";
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1,
h2,
h3 {
  font-weight: 400;
  letter-spacing: -0.045em;
}

.hero h1 {
  max-width: 760px;
  margin: 1.65rem 0 1.8rem;
  font-size: clamp(4rem, 9vw, 8.6rem);
  line-height: 0.91;
}

.hero h1 span {
  color: var(--muted-strong);
}

.hero-lede {
  max-width: 30rem;
  margin-bottom: 0;
  color: var(--muted-strong);
  font-size: clamp(1.08rem, 1.7vw, 1.35rem);
  line-height: 1.5;
}

.hero-visual {
  display: flex;
  width: min(100%, 430px);
  margin-inline: auto;
  flex-direction: column;
  align-items: center;
}

.hero-emblem {
  position: relative;
  width: 100%;
  aspect-ratio: 1;
}

.hero-emblem::before {
  position: absolute;
  top: 12%;
  left: 11%;
  width: 78%;
  height: 78%;
  border: 1px solid rgba(184, 217, 242, 0.12);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(184, 217, 242, 0.035), transparent 70%);
  content: "";
  pointer-events: none;
}

.hero-mark {
  position: absolute;
  top: 14%;
  left: 13%;
  width: 74%;
  height: auto;
  filter: drop-shadow(0 1.4rem 2.2rem rgba(125, 168, 198, 0.12));
}

.hero-corner {
  position: absolute;
  transform: translateX(-50%);
  color: var(--muted-strong);
  font-family: var(--mono);
  font-size: clamp(0.56rem, 0.9vw, 0.67rem);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero-corner-top { top: 3%; left: 50%; }
.hero-corner-left { top: 88%; left: 19%; }
.hero-corner-right { top: 88%; left: 81%; }

.hero-wordmark {
  width: 64%;
  height: auto;
  margin-top: 0.6rem;
}

.section {
  padding: clamp(4.5rem, 10vw, 9rem) 0;
  border-top: 1px solid var(--line-soft);
}

.section-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}

.section-heading h2 {
  margin: 0;
  font-size: clamp(2.25rem, 4.5vw, 4.4rem);
  line-height: 1;
}

.section-heading p {
  max-width: 22rem;
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.empty-state {
  display: grid;
  min-height: 185px;
  place-items: center start;
  padding: 2.25rem;
  border: 1px solid var(--line);
  background: linear-gradient(120deg, rgba(255, 255, 255, 0.028), rgba(255, 255, 255, 0.008));
}

.empty-state p {
  margin: 0;
  color: var(--muted-strong);
}

.empty-state small {
  display: block;
  margin-top: 0.45rem;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.arrow {
  padding-bottom: 1.4rem;
  color: var(--accent);
  font-size: 1.4rem;
}

.page-intro {
  max-width: 56rem;
  padding: clamp(6rem, 13vh, 10rem) 0 clamp(4rem, 8vh, 7rem);
}

.page-intro h1 {
  margin: 1.5rem 0 1.4rem;
  font-size: clamp(3.7rem, 8vw, 7.8rem);
  line-height: 0.94;
}

.page-intro p {
  max-width: 35rem;
  margin-bottom: 0;
  color: var(--muted-strong);
  font-size: 1.15rem;
}

.post-list {
  border-top: 1px solid var(--line);
}

.post-card {
  display: grid;
  grid-template-columns: 0.9fr 2fr auto;
  gap: 2rem;
  align-items: end;
  padding: 2rem 0;
  border-bottom: 1px solid var(--line);
  transition: color 180ms ease;
}

.post-card:hover h2 {
  color: var(--accent-bright);
}

.post-card h2 {
  margin: 0;
  font-size: clamp(1.75rem, 3vw, 3rem);
  line-height: 1;
  transition: color 180ms ease;
}

.post-card p {
  max-width: 33rem;
  margin: 0;
  color: var(--muted);
}

.post-card .arrow {
  padding-bottom: 0;
}

.article {
  --article-width: 960px;
  width: 100%;
  padding-bottom: 6rem;
}

.article-header {
  max-width: var(--article-width);
  margin-inline: auto;
  padding: clamp(6rem, 13vh, 10rem) 0 4.5rem;
}

.article-header h1 {
  max-width: 60rem;
  margin: 1.5rem 0;
  font-size: clamp(3.8rem, 8vw, 7.5rem);
  line-height: 0.92;
}

.article-dek {
  max-width: 48rem;
  margin: 0;
  color: var(--muted-strong);
  font-size: clamp(1.15rem, 2vw, 1.45rem);
  line-height: 1.45;
}

.article-body {
  border-top: 1px solid var(--line);
  padding-top: 3rem;
}

.article-body > p,
.roadmap-note {
  max-width: var(--article-width);
  margin-inline: auto;
  margin-bottom: 2.3rem;
  color: #d5dcde;
  font-size: 1.18rem;
  line-height: 1.75;
}

.article-body > p:first-child::first-letter {
  float: left;
  margin: 0.2rem 0.55rem 0 0;
  color: var(--accent-bright);
  font-size: 4.2rem;
  line-height: 0.8;
}

.loop-figure {
  margin: 3.5rem 0;
}

.loop-figure-frame {
  padding: clamp(1rem, 3vw, 2.5rem);
  border: 1px solid var(--line);
  background: var(--surface);
}

.loop-figure-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
}

.loop-diagram {
  position: relative;
  height: 432px;
}

.flow-connections {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  overflow: visible;
  fill: none;
}

.flow-connections-narrow {
  display: none;
}

.flow-tracks > path {
  stroke: #667b86;
  stroke-width: 1.3;
  vector-effect: non-scaling-stroke;
}

.flow-tracks .flow-track-fast { stroke: #827250; }
.flow-tracks .flow-track-slow { stroke: #54768f; }

.flow-pulse {
  stroke: var(--accent-bright);
  stroke-width: 2.4;
  stroke-linecap: round;
  stroke-dasharray: 5 95;
  animation: flow-forward 3.5s linear infinite;
}

.flow-pulse-data {
  stroke: #b1d1ba;
}

.flow-pulse-policy {
  stroke: #dcc39b;
  animation-delay: -1.5s;
}

.flow-pulse-fast {
  stroke: #dcc39b;
  animation-duration: 2.4s;
  animation-delay: -0.6s;
}

.flow-pulse-slow {
  stroke: var(--accent);
  animation-duration: 9s;
  animation-delay: -3s;
}

@keyframes flow-forward {
  to { stroke-dashoffset: -100; }
}

.flow-node {
  position: absolute;
  top: 72px;
  display: flex;
  width: 26%;
  height: 160px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--node-line);
  border-radius: 3px;
  background: var(--node-bg);
  text-align: center;
}

.flow-node-skill {
  --node-line: #384e40;
  --node-bg: #121c17;
  --node-accent: #b1d1ba;
  left: 2%;
}

.flow-node-looper {
  --node-line: #534834;
  --node-bg: #1d1b16;
  --node-accent: #dcc39b;
  left: 37%;
}

.flow-node-os {
  --node-line: #374c5d;
  --node-bg: #111c24;
  --node-accent: var(--accent);
  left: 72%;
}

.flow-stage {
  color: var(--node-accent);
  font: 0.65rem var(--mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.flow-name {
  margin-top: 0.65rem;
  font-size: clamp(1.65rem, 2.7vw, 2.1rem);
  letter-spacing: -0.04em;
  line-height: 1.25;
}

.flow-purpose {
  max-width: calc(100% - 1rem);
  margin-top: 0.45rem;
  color: var(--muted-strong);
  font-size: 0.85rem;
}

.flow-label {
  position: absolute;
  top: 120px;
  transform: translateX(-50%);
  color: var(--muted-strong);
  font: 0.65rem var(--mono);
  white-space: nowrap;
}

.flow-label-data { left: 32.5%; }
.flow-label-policy { left: 67.5%; }
.flow-label-fast { top: 314px; left: 67.5%; color: #dcc39b; }
.flow-label-slow { top: 386px; left: 67.5%; color: var(--accent); }

.loop-figure figcaption {
  max-width: var(--article-width);
  margin: 1rem auto 0;
  color: var(--muted);
  font-size: 0.85rem;
  line-height: 1.6;
}

.loop-figure figcaption span {
  color: var(--muted-strong);
}

.roadmap-notes {
  max-width: var(--article-width);
  margin: 0 auto;
}

.roadmap-label {
  margin-right: 0.45em;
  white-space: nowrap;
}

.roadmap-label-skill { color: #b1d1ba; }
.roadmap-label-looper { color: #dcc39b; }
.roadmap-label-os { color: var(--accent); }

.roadmap-note strong {
  color: var(--text);
  font-weight: 600;
}

@media (max-width: 860px) {
  .loop-diagram { height: 700px; }
  .flow-connections-wide { display: none; }
  .flow-connections-narrow { display: block; }

  .flow-node {
    left: 0;
    width: 76%;
    height: 164px;
  }

  .flow-node-skill { top: 24px; }
  .flow-node-looper { top: 268px; }
  .flow-node-os { top: 512px; }
  .flow-name { font-size: 2rem; }

  .flow-label-data,
  .flow-label-policy {
    left: calc(38% + 1rem);
    transform: none;
  }

  .flow-label-data { top: 220px; }
  .flow-label-policy { top: 464px; }
  .flow-label-fast,
  .flow-label-slow {
    top: 396px;
    writing-mode: vertical-rl;
    transform: rotate(180deg);
  }

  .flow-label-fast { left: 78%; }
  .flow-label-slow { left: 90%; }
}

.research-groups {
  display: grid;
  gap: 4.5rem;
}

.research-group {
  display: grid;
  grid-template-columns: minmax(130px, 0.6fr) minmax(0, 2fr);
  gap: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--line);
}

.research-group h2 {
  margin: 0;
  font-size: clamp(1.8rem, 3vw, 3rem);
}

.research-group-body {
  display: grid;
  gap: 1rem;
}

.research-empty,
.research-release {
  min-height: 145px;
  padding: 1.5rem;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.018);
}

.research-empty p {
  margin: 0;
  color: var(--muted);
}

.research-release {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 2rem;
}

.research-release h3 {
  margin: 0.45rem 0 0;
  font-size: 1.75rem;
}

.research-release footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.status {
  color: var(--accent);
}

.contact-empty {
  display: grid;
  min-height: 320px;
  place-items: center;
  border: 1px solid var(--line);
  background: radial-gradient(circle at center, rgba(184, 217, 242, 0.06), transparent 58%);
  text-align: center;
}

.contact-empty p {
  max-width: 24rem;
  margin: 0 auto;
  color: var(--muted-strong);
  font-size: 1.15rem;
}

.contact-empty small {
  display: block;
  margin-top: 1rem;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.site-footer {
  border-top: 1px solid var(--line-soft);
}

.site-footer-inner {
  display: flex;
  min-height: 112px;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.site-footer p {
  margin: 0;
}

.footer-mark {
  color: var(--muted-strong);
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 5px;
}

@media (max-width: 760px) {
  .header-inner {
    min-height: 72px;
  }

  .brand { gap: 0.5rem; }
  .brand .brand-icon { width: 30px; }
  .brand .brand-wordmark { width: 114px; }

  .menu-toggle {
    display: block;
  }

  .site-nav {
    display: none;
    position: absolute;
    top: calc(100% + 1px);
    right: var(--page-pad);
    left: var(--page-pad);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.55rem 1rem;
    border: 1px solid var(--line);
    background: rgba(7, 9, 10, 0.97);
    box-shadow: 0 1rem 3rem rgba(0, 0, 0, 0.3);
  }

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

  .site-nav a {
    padding: 0.9rem 0;
    border-bottom: 1px solid var(--line-soft);
  }

  .site-nav a:last-child {
    border-bottom: 0;
  }

  .hero {
    min-height: auto;
    grid-template-columns: 1fr;
    gap: 3.5rem;
    padding-top: 5.5rem;
  }

  .hero h1 {
    font-size: clamp(3.9rem, 19vw, 6.5rem);
  }

  .hero-visual {
    width: min(100%, 360px);
  }

  .section-heading {
    display: block;
  }

  .section-heading p {
    margin-top: 1rem;
  }

  .post-card {
    grid-template-columns: 1fr auto;
    gap: 1rem;
  }

  .post-card .meta,
  .post-card p {
    grid-column: 1 / -1;
  }

  .research-group {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }

  .site-footer-inner {
    min-height: 92px;
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    gap: 0.55rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .flow-pulse { display: none; animation: none; }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}