:root {
  --bg: #070a11;
  --bg-soft: #0d121c;
  --panel: rgba(255, 255, 255, 0.035);
  --panel-strong: rgba(255, 255, 255, 0.05);
  --line: rgba(255, 255, 255, 0.1);
  --line-strong: rgba(255, 255, 255, 0.18);
  --text: #f5f7fb;
  --muted: #aeb8ca;
  --subtle: #7b879d;
  --accent: #dce6ff;
  --accent-soft: #8ab5ff;
  --warm: #d9ceb2;
  --radius: 8px;
  --radius-sm: 6px;
  --container: 1120px;
  --nav-height: 74px;
  --section-space: 6rem;
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.28);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-height) + 18px);
}

body {
  margin: 0;
  color: var(--text);
  font-family: "Inter", system-ui, sans-serif;
  background:
    radial-gradient(circle at top left, rgba(65, 86, 132, 0.22), transparent 26%),
    radial-gradient(circle at 85% 15%, rgba(116, 142, 209, 0.12), transparent 22%),
    linear-gradient(180deg, #05070c 0%, #070a11 36%, #05070c 100%);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body.nav-open {
  overflow: hidden;
}

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

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

button,
input,
textarea,
select {
  font: inherit;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -3rem;
  z-index: 100;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  background: #fff;
  color: #05070c;
  font-weight: 700;
}

.skip-link:focus {
  top: 1rem;
}

:focus-visible {
  outline: 2px solid var(--accent-soft);
  outline-offset: 3px;
}

.container {
  width: min(calc(100% - 2rem), var(--container));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  min-height: var(--nav-height);
  background: rgba(7, 10, 17, 0.72);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid transparent;
  transition: background 180ms ease, border-color 180ms ease;
}

.site-header.is-scrolled {
  background: rgba(7, 10, 17, 0.9);
  border-color: rgba(255, 255, 255, 0.08);
}

.nav-shell {
  min-height: var(--nav-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
}

.brand-mark {
  width: 2.1rem;
  height: 2.1rem;
  display: inline-grid;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  font-family: "JetBrains Mono", monospace;
  font-size: 0.76rem;
  color: var(--accent);
  background: rgba(255, 255, 255, 0.02);
}

.brand-name {
  font-size: 0.95rem;
  font-weight: 700;
}

.site-nav {
  display: flex;
  align-items: center;
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 0.6rem;
  padding: 0.72rem 0.9rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.02);
  color: var(--text);
}

.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  display: block;
  width: 14px;
  height: 1px;
  background: currentColor;
  content: "";
}

.nav-toggle span {
  position: relative;
}

.nav-toggle span::before {
  position: absolute;
  top: -4px;
  left: 0;
}

.nav-toggle span::after {
  position: absolute;
  top: 4px;
  left: 0;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav-menu a {
  padding: 0.6rem 0.8rem;
  color: var(--subtle);
  font-size: 0.92rem;
  border-radius: var(--radius-sm);
  transition: color 160ms ease, background 160ms ease;
}

.nav-menu a:hover,
.nav-menu a:focus-visible,
.nav-menu a.is-active {
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
}

.hero {
  padding: 4.5rem 0 3rem;
}

.hero-shell {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(280px, 0.95fr);
  gap: 3rem;
  align-items: center;
  min-height: calc(100vh - var(--nav-height) - 3rem);
}

.eyebrow {
  margin: 0 0 1rem;
  color: var(--warm);
  font-family: "JetBrains Mono", monospace;
  font-size: 0.74rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.hero-copy h1 {
  margin: 0;
  font-size: clamp(3.8rem, 11vw, 7rem);
  line-height: 0.9;
  letter-spacing: -0.07em;
  font-weight: 800;
}

.hero-line {
  max-width: 22ch;
  margin: 1.2rem 0 0;
  font-size: clamp(1.25rem, 2.2vw, 1.7rem);
  line-height: 1.35;
  color: var(--accent);
}

.hero-text {
  max-width: 38rem;
  margin: 1rem 0 0;
  color: var(--muted);
  font-size: 1rem;
}

.hero-actions,
.section-actions,
.card-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.hero-actions {
  margin-top: 2rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.85rem;
  padding: 0.75rem 1.05rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.02);
  color: var(--text);
  font-weight: 600;
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-1px);
  border-color: var(--line-strong);
  background: rgba(255, 255, 255, 0.05);
}

.button-primary {
  background: linear-gradient(180deg, rgba(220, 230, 255, 0.16), rgba(220, 230, 255, 0.08));
  border-color: rgba(255, 255, 255, 0.18);
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.9rem;
  margin: 2.3rem 0 0;
}

.hero-metrics div {
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}

.hero-metrics dt {
  margin: 0;
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
}

.hero-metrics dd {
  margin: 0.35rem 0 0;
  color: var(--subtle);
  font-size: 0.88rem;
}

.hero-mosaic {
  position: relative;
  min-height: 560px;
  padding: 1rem;
}

.mosaic-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 54px 54px;
  mask-image: radial-gradient(circle at 50% 50%, rgba(0, 0, 0, 0.9), transparent 88%);
  opacity: 0.35;
}

.mosaic-tile {
  position: absolute;
  overflow: hidden;
  padding: 1rem 1rem 1.05rem;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.055), rgba(255, 255, 255, 0.028)),
    rgba(9, 14, 23, 0.92);
  box-shadow: var(--shadow);
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.mosaic-tile:hover {
  transform: translateY(-2px);
  border-color: var(--line-strong);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.07), rgba(255, 255, 255, 0.03)),
    rgba(9, 14, 23, 0.96);
}

.mosaic-tile::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(135deg, rgba(138, 181, 255, 0.08), transparent 38%);
  opacity: 0.8;
}

.mosaic-tile > * {
  position: relative;
  z-index: 1;
}

.mosaic-label {
  margin: 0;
  color: var(--warm);
  font-family: "JetBrains Mono", monospace;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.mosaic-tile h2 {
  margin: 0.4rem 0 0;
  font-size: 1.12rem;
  line-height: 1.12;
  letter-spacing: -0.03em;
}

.mosaic-summary,
.mosaic-article-meta {
  margin: 0.7rem 0 0;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.45;
}

.mosaic-primary {
  top: 2%;
  left: 0;
  width: 56%;
  min-height: 270px;
}

.mosaic-primary h2 {
  font-size: 1.7rem;
}

.mosaic-wdc {
  top: 0;
  right: 0;
  width: 38%;
  min-height: 185px;
}

.mosaic-srmic {
  top: 38%;
  left: 6%;
  width: 34%;
  min-height: 170px;
}

.mosaic-metric {
  top: 42%;
  right: 2%;
  width: 28%;
  min-height: 126px;
  display: flex;
  align-items: flex-end;
}

.mosaic-article {
  left: 31%;
  bottom: 1%;
  width: 38%;
  min-height: 165px;
}

.mosaic-repo {
  right: 0;
  bottom: 4%;
  width: 25%;
  min-height: 150px;
}

.metric-stack {
  display: grid;
  gap: 0.2rem;
}

.metric-stack strong {
  font-size: 1.4rem;
  line-height: 1.1;
  letter-spacing: -0.04em;
}

.metric-stack span {
  color: var(--muted);
  font-size: 0.88rem;
}

.mosaic-diagram {
  margin-top: 1rem;
}

.mosaic-diagram-context {
  display: grid;
  gap: 0.55rem;
}

.mosaic-diagram-context span {
  display: block;
  height: 10px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.mosaic-diagram-context span:nth-child(1) {
  width: 62%;
  background: linear-gradient(90deg, rgba(138, 181, 255, 0.55), rgba(138, 181, 255, 0.18));
}

.mosaic-diagram-context span:nth-child(2) {
  width: 86%;
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.18), rgba(255, 255, 255, 0.05));
}

.mosaic-diagram-context span:nth-child(3) {
  width: 74%;
  background: linear-gradient(90deg, rgba(217, 206, 178, 0.3), rgba(217, 206, 178, 0.08));
}

.mosaic-diagram-context span:nth-child(4) {
  width: 48%;
  background: linear-gradient(90deg, rgba(138, 181, 255, 0.28), rgba(138, 181, 255, 0.08));
}

.mosaic-diagram-nodes {
  position: relative;
  min-height: 52px;
}

.mosaic-diagram-nodes::before,
.mosaic-diagram-memory::before {
  content: "";
  position: absolute;
  left: 10%;
  right: 10%;
  top: 50%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.16), transparent);
}

.mosaic-diagram-nodes span {
  position: absolute;
  width: 12px;
  height: 12px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(138, 181, 255, 0.38);
}

.mosaic-diagram-nodes span:nth-child(1) { left: 12%; top: 56%; }
.mosaic-diagram-nodes span:nth-child(2) { left: 34%; top: 24%; }
.mosaic-diagram-nodes span:nth-child(3) { right: 28%; top: 48%; }
.mosaic-diagram-nodes span:nth-child(4) { right: 10%; top: 18%; }

.mosaic-diagram-memory {
  position: relative;
  display: flex;
  gap: 0.6rem;
  align-items: flex-end;
  min-height: 58px;
}

.mosaic-diagram-memory span {
  position: relative;
  z-index: 1;
  display: block;
  width: 42px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.04);
}

.mosaic-diagram-memory span:nth-child(1) { height: 24px; }
.mosaic-diagram-memory span:nth-child(2) { height: 38px; background: rgba(138, 181, 255, 0.11); }
.mosaic-diagram-memory span:nth-child(3) { height: 50px; }

.section {
  padding: var(--section-space) 0;
}

.section-muted {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.025), rgba(255, 255, 255, 0));
}

.section-shell {
  display: grid;
  gap: 2rem;
}

.section-head {
  max-width: 760px;
}

.section-head h2 {
  margin: 0;
  font-size: clamp(2rem, 4.8vw, 3.4rem);
  line-height: 1.04;
  letter-spacing: -0.05em;
}

.section-note {
  margin: 0.85rem 0 0;
  color: var(--muted);
}

.card-grid {
  display: grid;
  gap: 1rem;
}

.card-grid-work {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.card-grid-writing {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card {
  min-height: 100%;
  padding: 1.45rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.045), rgba(255, 255, 255, 0.025));
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}

.card:hover,
.card:focus-within {
  transform: translateY(-2px);
  border-color: var(--line-strong);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.03));
}

.card-meta {
  margin: 0;
  color: var(--warm);
  font-family: "JetBrains Mono", monospace;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.card h3 {
  margin: 0.3rem 0 0;
  font-size: 1.45rem;
  line-height: 1.08;
  letter-spacing: -0.03em;
}

.card-text {
  margin: 0.85rem 0 0;
  color: var(--muted);
}

.card-detail {
  margin: 1rem 0 0;
  padding-top: 0.95rem;
  border-top: 1px solid var(--line);
  color: var(--text);
  font-size: 0.95rem;
}

.card-detail strong {
  color: var(--accent);
}

.card-actions {
  margin-top: 1.15rem;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  color: var(--accent);
  font-weight: 600;
}

.text-link::after {
  content: "→";
}

.writing-card {
  padding: 1.7rem;
}

.writing-card h3 {
  font-size: 1.6rem;
}

.patent-shell {
  display: grid;
  gap: 1rem;
  padding: 1.5rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.02));
}

.patent-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.stat {
  padding: 1rem 0;
  border-top: 1px solid var(--line);
}

.stat-value {
  display: block;
  font-size: clamp(1.8rem, 3vw, 2.3rem);
  line-height: 1;
  letter-spacing: -0.05em;
  font-weight: 800;
}

.stat-label {
  display: block;
  margin-top: 0.4rem;
  color: var(--subtle);
}

.patent-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.patent-item {
  padding: 1rem 0;
  border-top: 1px solid var(--line);
}

.patent-item p {
  margin: 0;
  color: var(--warm);
  font-family: "JetBrains Mono", monospace;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.patent-item h3 {
  margin: 0.45rem 0 0;
  font-size: 1rem;
  line-height: 1.45;
}

.patent-item a {
  display: inline-flex;
  margin-top: 0.75rem;
  color: var(--accent);
  font-weight: 600;
}

.section-actions {
  margin-top: 0.25rem;
}

.site-footer {
  padding: 1.5rem 0 2rem;
}

.footer-shell {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--line);
}

.footer-copy {
  margin: 0;
  color: var(--muted);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-links a {
  color: var(--subtle);
}

.footer-links a:hover,
.footer-links a:focus-visible,
.patent-item a:hover,
.text-link:hover {
  color: var(--text);
}

.reveal {
  opacity: 1;
  transform: none;
}

.js .reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 560ms ease, transform 560ms ease;
}

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

.js .reveal-stagger > .reveal:nth-child(1) { transition-delay: 0ms; }
.js .reveal-stagger > .reveal:nth-child(2) { transition-delay: 70ms; }
.js .reveal-stagger > .reveal:nth-child(3) { transition-delay: 140ms; }
.js .reveal-stagger > .reveal:nth-child(4) { transition-delay: 210ms; }
.js .reveal-stagger > .reveal:nth-child(5) { transition-delay: 280ms; }

@media (max-width: 980px) {
  .hero-shell,
  .card-grid-work,
  .card-grid-writing,
  .patent-list {
    grid-template-columns: 1fr;
  }

  .hero-mosaic {
    min-height: 520px;
  }
}

@media (max-width: 820px) {
  :root {
    --nav-height: 68px;
    --section-space: 4.5rem;
  }

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

  .nav-menu {
    position: absolute;
    top: calc(100% + 0.5rem);
    right: 1rem;
    left: 1rem;
    display: grid;
    gap: 0.25rem;
    padding: 0.75rem;
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    background: rgba(7, 10, 17, 0.95);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-6px);
    transition: opacity 160ms ease, transform 160ms ease;
  }

  .nav-menu.is-open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .nav-menu a {
    width: 100%;
  }

  .hero {
    padding-top: 2rem;
  }

  .hero-shell,
  .hero-metrics,
  .patent-stats {
    grid-template-columns: 1fr;
  }

  .hero-mosaic {
    min-height: auto;
    padding: 0;
  }

  .mosaic-grid,
  .mosaic-srmic,
  .mosaic-metric,
  .mosaic-article,
  .mosaic-repo {
    display: none;
  }

  .mosaic-primary,
  .mosaic-wdc {
    position: relative;
    inset: auto;
    width: 100%;
    min-height: auto;
    margin-top: 1rem;
  }

  .hero-copy h1 {
    font-size: clamp(3rem, 18vw, 5rem);
  }

  .section-head h2 {
    font-size: clamp(1.9rem, 9vw, 3rem);
  }

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

@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;
  }
}