:root {
  --bg: #f4efe6;
  --card: #fffaf2;
  --rule: #d8cfbf;
  --tag-bg: #f1e7d9;
  --accent: #164f8b;
  --hover: #f0652e;
  --max: 1080px;
}

html,
body {
  background: var(--bg);
  overflow-x: hidden;
}

body {
  background-image:
    radial-gradient(rgba(26, 23, 20, .035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(26, 23, 20, .018) 1px, transparent 1px);
  background-size: 4px 4px, 96px 96px;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: .055;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.86' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.65'/%3E%3C/svg%3E");
}

body::after {
  content: "";
  position: fixed;
  top: 78px;
  bottom: 34px;
  left: max(28px, calc(50% - 610px));
  width: 18px;
  z-index: 0;
  pointer-events: none;
  border-left: 1px solid rgba(120, 107, 87, .24);
  border-right: 1px solid rgba(120, 107, 87, .16);
  box-shadow: 7px 0 0 -6px rgba(120, 107, 87, .16);
}

nav {
  background: rgba(244, 239, 230, .84);
  backdrop-filter: blur(14px);
}

nav .links a {
  position: relative;
}

nav .links a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -6px;
  height: 1px;
  background: var(--hover);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .18s ease;
}

nav .links a.is-active {
  color: var(--hover);
}

nav .links a.is-active::after {
  transform: scaleX(1);
}

.page,
nav .inner {
  max-width: var(--max);
}

.page {
  position: relative;
  z-index: 1;
}

.hero {
  position: relative;
  grid-template-columns: minmax(0, 1fr) minmax(330px, 430px);
  gap: clamp(42px, 6vw, 76px);
  align-items: center;
  min-height: 680px;
  padding: 70px 0 72px;
}

.hero::before,
.hero::after {
  content: "";
  position: absolute;
  width: 56px;
  height: 56px;
  pointer-events: none;
  opacity: .55;
}

.hero::before {
  top: 64px;
  left: -34px;
  border-top: 1px solid var(--rule);
  border-left: 1px solid var(--rule);
}

.hero::after {
  right: -26px;
  bottom: 52px;
  border-right: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}

.hero-text {
  position: relative;
  animation: none;
}

.hero-text::before {
  content: "SENSOR FUSION / ESTIMATION / CONTROL";
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
  color: var(--hover);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .11em;
}

.hero-text h1 {
  font-size: clamp(42px, 5.8vw, 68px);
  line-height: .95;
  letter-spacing: -.015em;
}

.hero-text .subtitle {
  margin-top: 10px;
  color: #7b7165;
}

.hero-text p {
  max-width: 600px;
  font-size: 16px;
}

.expertise {
  max-width: 650px;
}

.exp-item {
  padding: 12px 0;
  border-top: 1px solid rgba(216, 207, 191, .75);
}

.exp-item:last-child {
  border-bottom: 1px solid rgba(216, 207, 191, .75);
}

.hero-links a,
.pub-links a,
.links-grid li a {
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .45);
}

.hero-links a:hover,
.pub-links a:hover,
.links-grid li a:hover {
  transform: translateY(-1px);
}

.hero-runner {
  position: relative;
  width: clamp(330px, 34vw, 440px);
  aspect-ratio: 9 / 13;
  border-radius: 18px;
  overflow: visible;
  isolation: isolate;
  animation: none;
}

.hero-runner::before {
  content: "";
  position: absolute;
  inset: -18px;
  z-index: -2;
  border: 1px solid rgba(120, 107, 87, .22);
  border-radius: 22px;
  background:
    linear-gradient(rgba(216, 207, 191, .24) 1px, transparent 1px),
    linear-gradient(90deg, rgba(216, 207, 191, .24) 1px, transparent 1px),
    linear-gradient(145deg, rgba(255, 250, 242, .9), rgba(239, 229, 214, .55));
  background-size: 34px 34px, 34px 34px, auto;
}

.hero-runner::after {
  content: "RUNNER FIELD // PARTICLE MAP";
  position: absolute;
  left: -10px;
  bottom: -42px;
  color: #8d8275;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 10px;
  letter-spacing: .16em;
}

.runner-source {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 53% 54%;
  border-radius: 16px;
  opacity: 1;
  filter: saturate(.95) contrast(1.05);
  box-shadow: 0 18px 52px -36px rgba(26, 23, 20, .55);
}

.particle-ready .runner-source {
  opacity: 0;
}

.runner-particle-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border-radius: 16px;
  z-index: 2;
}

.runner-glow {
  position: absolute;
  inset: -6%;
  z-index: -1;
  pointer-events: none;
  border-radius: 24px;
  background:
    radial-gradient(circle at 62% 46%, rgba(240, 101, 46, .22), transparent 28%),
    radial-gradient(circle at 62% 70%, rgba(22, 79, 139, .16), transparent 34%);
  filter: blur(8px);
}

.runner-measure {
  position: absolute;
  pointer-events: none;
  border-color: rgba(240, 101, 46, .55);
  opacity: .85;
}

.runner-measure--top {
  top: 18%;
  left: -26px;
  width: 86px;
  height: 1px;
  border-top: 1px solid rgba(240, 101, 46, .55);
}

.runner-measure--side {
  right: -24px;
  bottom: 18%;
  width: 1px;
  height: 116px;
  border-right: 1px solid rgba(240, 101, 46, .55);
}

.erdos {
  background: rgba(255, 250, 242, .72);
  border: 1px solid rgba(216, 207, 191, .9);
  border-left: 3px solid var(--hover);
  box-shadow: 0 18px 60px -48px rgba(26, 23, 20, .42);
}

.section-title {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.section-title::before {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 10px;
  letter-spacing: .14em;
  color: var(--hover);
  white-space: nowrap;
}

#focus .section-title::before { content: "SECTION 00 / ACTIVE STACK"; }
#news .section-title::before { content: "SECTION 01 / UPDATE LOG"; }
#research .section-title::before { content: "SECTION 02 / RESEARCH MAP"; }
#publications .section-title::before { content: "SECTION 03 / PUBLICATION ARCHIVE"; }
#links .section-title::before { content: "SECTION 04 / RESOURCE INDEX"; }
#visitors .section-title::before { content: "SECTION 05 / TELEMETRY"; }

.section-title::after {
  content: "";
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--ink), transparent);
}

.news-item {
  padding: 5px 0;
  border-radius: 6px;
  transition: background .18s ease, transform .18s ease;
}

.news-item:hover {
  background: rgba(255, 250, 242, .66);
  transform: translateX(4px);
}

.pub-card {
  position: relative;
  padding: 14px;
  margin: -14px;
  border-radius: 10px;
  transition: background .2s ease, transform .2s ease, box-shadow .2s ease;
}

.pub-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 18px;
  bottom: 18px;
  width: 2px;
  background: var(--hover);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform .22s ease;
}

.pub-card:hover {
  background: rgba(255, 250, 242, .62);
  transform: translateY(-2px);
  box-shadow: 0 22px 60px -52px rgba(26, 23, 20, .52);
}

.pub-card:hover::before {
  transform: scaleY(1);
}

.pub-img {
  position: relative;
  box-shadow: 0 10px 32px -28px rgba(26, 23, 20, .55);
}

.pub-img::before,
.pub-img::after {
  content: "";
  position: absolute;
  width: 22px;
  height: 22px;
  z-index: 2;
  pointer-events: none;
  opacity: 0;
  transition: opacity .2s ease, transform .2s ease;
}

.pub-img::before {
  top: -7px;
  left: -7px;
  border-top: 1px solid var(--hover);
  border-left: 1px solid var(--hover);
  transform: translate(3px, 3px);
}

.pub-img::after {
  right: -7px;
  bottom: -7px;
  border-right: 1px solid var(--hover);
  border-bottom: 1px solid var(--hover);
  transform: translate(-3px, -3px);
}

.pub-card:hover .pub-img::before,
.pub-card:hover .pub-img::after {
  opacity: 1;
  transform: translate(0, 0);
}

.pub-img img,
.pub-img video {
  transition: transform .34s ease, filter .34s ease;
}

.pub-card:hover .pub-img img,
.pub-card:hover .pub-img video {
  transform: scale(1.035);
  filter: saturate(.82) sepia(.16) hue-rotate(338deg) contrast(1.08);
}

.pub-title a,
.pub-title {
  transition: color .18s ease;
}

.pub-card:hover .pub-title,
.pub-card:hover .pub-title a {
  color: var(--hover);
}

.will-reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .58s ease, transform .58s ease;
}

.will-reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.focus-panel {
  margin-top: 44px;
}

.focus-grid {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(320px, .72fr);
  gap: 28px;
  align-items: stretch;
  padding: 22px 0 8px;
}

.focus-copy {
  padding: 24px 0;
}

.focus-kicker {
  margin: 0 0 12px;
  color: var(--hover);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .13em;
}

.focus-copy h2 {
  max-width: 620px;
  color: var(--ink);
  font-family: var(--serif);
  font-size: clamp(28px, 3.6vw, 42px);
  line-height: 1.05;
  letter-spacing: -.01em;
}

.focus-copy p:last-child {
  max-width: 620px;
  margin-top: 18px;
  color: var(--mid);
  font-size: 15px;
}

.focus-terminal {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(216, 207, 191, .92);
  border-radius: 10px;
  background:
    linear-gradient(rgba(216, 207, 191, .18) 1px, transparent 1px),
    linear-gradient(90deg, rgba(216, 207, 191, .18) 1px, transparent 1px),
    rgba(255, 250, 242, .72);
  background-size: 28px 28px, 28px 28px, auto;
  box-shadow: 0 22px 72px -58px rgba(26, 23, 20, .5);
}

.focus-terminal::after {
  content: "";
  position: absolute;
  inset: auto 26px 20px auto;
  width: 72px;
  height: 72px;
  border-right: 1px solid rgba(240, 101, 46, .48);
  border-bottom: 1px solid rgba(240, 101, 46, .48);
  opacity: .75;
  pointer-events: none;
}

.term-head {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 13px 16px;
  border-bottom: 1px solid rgba(216, 207, 191, .86);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 11px;
  color: #766b5f;
}

.term-head i {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: #c8bfb1;
}

.term-head i:first-child {
  background: var(--hover);
}

.focus-code {
  margin: 0;
  padding: 20px 20px 18px;
  color: #3d3934;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12px;
  line-height: 1.8;
  white-space: pre-wrap;
}

.focus-meter {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 12px;
  align-items: center;
  padding: 0 20px 22px;
  color: #766b5f;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 11px;
}

.focus-meter b {
  height: 9px;
  overflow: hidden;
  border: 1px solid rgba(26, 23, 20, .28);
  border-radius: 999px;
  background: rgba(244, 239, 230, .72);
}

.focus-meter i {
  display: block;
  width: 92%;
  height: 100%;
  background: linear-gradient(90deg, var(--hover), #e1a654);
  animation: focus-pulse 2.6s ease-in-out infinite;
}

@keyframes focus-pulse {
  0%, 100% { opacity: .82; }
  50% { opacity: 1; }
}

.telemetry {
  position: relative;
}

.telemetry::before {
  content: "PV / UV / GEO";
  position: absolute;
  right: 0;
  top: 4px;
  color: #a09689;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 10px;
  letter-spacing: .16em;
}

.telemetry > div[style*="display:flex"] {
  padding: 18px;
  border: 1px solid rgba(216, 207, 191, .86);
  border-radius: 10px;
  background: rgba(255, 250, 242, .58);
}

@media (prefers-reduced-motion: reduce) {
  .will-reveal,
  .will-reveal.is-visible,
  .news-item,
  .pub-card,
  .pub-img img,
  .pub-img video {
    transition: none;
    transform: none;
  }
}

@media (max-width: 760px) {
  body::after {
    display: none;
  }

  .page,
  nav .inner,
  section,
  .hero,
  .hero-text,
  .expertise,
  .erdos,
  .focus-panel,
  .focus-grid,
  .focus-copy,
  .focus-terminal {
    min-width: 0;
    max-width: 100%;
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    gap: 36px;
    padding: 42px 0 44px;
  }

  .hero::before,
  .hero::after {
    display: none;
  }

  .hero-runner {
    order: -1;
    width: min(calc(100vw - 48px), 390px);
    justify-self: center;
  }

  .hero-runner::before {
    inset: 0;
  }

  .hero-text h1 {
    font-size: clamp(38px, 14vw, 54px);
  }

  .hero-text::before {
    font-size: 10px;
  }

  .section-title {
    flex-wrap: wrap;
    gap: 6px 10px;
  }

  .section-title::before {
    flex-basis: 100%;
    font-size: 9px;
  }

  .focus-grid {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .focus-copy {
    padding: 10px 0 0;
  }

  .focus-copy h2 {
    font-size: clamp(28px, 9vw, 36px);
  }

  .focus-terminal {
    border-radius: 8px;
  }

  .focus-code {
    font-size: 11px;
    line-height: 1.7;
    padding: 16px;
  }

  .focus-meter {
    grid-template-columns: 1fr auto;
    gap: 8px;
    padding: 0 16px 18px;
  }

  .focus-meter b {
    grid-column: 1 / -1;
    order: 3;
  }

  .telemetry::before {
    position: static;
    display: block;
    margin: -8px 0 12px;
  }

  .hero-text p {
    overflow-wrap: anywhere;
  }

  .exp-item {
    display: block;
  }

  .exp-label {
    display: block;
    min-width: 0;
    margin-bottom: 4px;
  }

  .exp-text {
    display: block;
    width: 100%;
    max-width: 100%;
    overflow-wrap: anywhere;
  }

  .hero-links,
  .pub-links {
    width: 100%;
    max-width: 100%;
    min-width: 0;
  }

  .hero-links a,
  .pub-links a {
    flex: 0 1 auto;
    max-width: 100%;
  }

  .erdos {
    overflow-wrap: anywhere;
  }

  .news-item {
    align-items: flex-start;
  }
}

@media (max-width: 520px) {
  .page {
    width: 100%;
    max-width: 100%;
    padding-left: 24px;
    padding-right: 24px;
  }

  .hero,
  .hero-text {
    width: 100%;
    max-width: calc(100vw - 48px);
  }

  .hero-text {
    padding-right: 18px;
  }

  .hero-text p,
  .exp-text {
    max-width: 100%;
  }

  .hero-runner {
    width: min(calc(100vw - 48px), 342px);
  }

  .hero-links {
    gap: 8px 7px;
  }

  .hero-links a {
    padding: 6px 12px;
    font-size: 12.5px;
  }

  .focus-copy h2 {
    font-size: clamp(26px, 8.6vw, 34px);
    overflow-wrap: anywhere;
  }

  .focus-code {
    font-size: 10.5px;
  }

  .focus-terminal::after {
    width: 48px;
    height: 48px;
  }

  nav .inner {
    padding: 0 14px;
  }

  nav .logo {
    font-size: 14px;
  }

  nav .links {
    display: none;
  }
}