@font-face {
  font-family: 'Instrument Sans';
  src: url('/fonts/instrument-sans-latin-var.woff2') format('woff2');
  font-weight: 100 900;
  font-display: swap;
}

@font-face {
  font-family: 'JetBrains Mono';
  src: url('/fonts/jetbrains-mono-latin-var.woff2') format('woff2');
  font-weight: 100 800;
  font-display: swap;
}

:root {
  color-scheme: dark;
  --bg: #050505;
  --surface: #0c0c0c;
  --text: #f2f2f2;
  --muted: #8a8a8a;
  --dim: #7a7a7a;
  --accent: #00c4ff;
  --accent-dim: rgba(0, 196, 255, 0.08);
  --rule: rgba(255, 255, 255, 0.075);
  --rule-bright: rgba(255, 255, 255, 0.13);
  --sans: 'Outfit', 'Instrument Sans', system-ui, -apple-system, sans-serif;
  --display: 'Syne', 'Instrument Sans', system-ui, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, monospace;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --gutter: clamp(1rem, 4vw, 3rem);
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 104px;
  background: var(--bg);
}

body {
  min-height: 100svh;
  margin: 0;
  overflow-x: clip;
  background:
    linear-gradient(rgba(255, 255, 255, 0.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.018) 1px, transparent 1px),
    radial-gradient(circle at 82% 11%, rgba(0, 196, 255, 0.085), transparent 26rem),
    var(--bg);
  background-size: 68px 68px, 68px 68px, auto, auto;
  color: var(--text);
  font-family: var(--sans);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.25s ease, border-color 0.25s ease, background 0.25s ease;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  min-height: 80px;
  padding-inline: max(var(--gutter), calc((100vw - 1440px) / 2 + var(--gutter)));
  border-bottom: 1px solid var(--rule);
  background: rgba(5, 5, 5, 0.86);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.site-header::before {
  content: '';
  position: absolute;
  inset: 0 0 auto;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), #0080ff 55%, transparent 85%);
}

.brand {
  font: 700 1.15rem/1 var(--mono);
  letter-spacing: 0.25em;
}

.brand::after { content: '.'; color: var(--accent); }
.brand:hover { opacity: 0.72; }

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(0.4rem, 1vw, 0.75rem);
}

.site-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding-inline: clamp(0.6rem, 1.2vw, 1rem);
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.site-nav a::before {
  margin-right: 0.45rem;
  color: var(--accent);
  font: 400 0.55rem var(--mono);
  opacity: 0.72;
}

.site-nav a:nth-child(1)::before { content: '01'; }
.site-nav a:nth-child(2)::before { content: '02'; }
.site-nav a:nth-child(3)::before { content: '03'; }
.site-nav a:hover { color: var(--text); }

.shell {
  width: 100%;
  max-width: 1440px;
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin: 0;
  color: var(--muted);
  font: 500 0.66rem/1.5 var(--mono);
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.eyebrow::before {
  content: '';
  width: clamp(24px, 4vw, 42px);
  height: 1px;
  flex: none;
  background: var(--accent);
}

.archive-hero,
.article-hero {
  position: relative;
  isolation: isolate;
}

.archive-hero::after,
.article-hero::after {
  content: 'AI';
  position: absolute;
  right: var(--gutter);
  bottom: -0.12em;
  z-index: -1;
  color: transparent;
  font: 800 clamp(9rem, 25vw, 23rem)/0.78 var(--display);
  letter-spacing: -0.09em;
  -webkit-text-stroke: 1px rgba(255, 255, 255, 0.04);
  pointer-events: none;
  user-select: none;
}

.archive-hero {
  display: flex;
  min-height: min(720px, calc(100svh - 80px));
  flex-direction: column;
  justify-content: center;
  padding-block: clamp(5rem, 12vw, 10rem);
}

.archive-hero h1,
.article-hero h1 {
  max-width: 12ch;
  margin: 1.25rem 0 0;
  font-family: var(--display);
  font-weight: 800;
  line-height: 0.9;
  letter-spacing: -0.055em;
  text-transform: uppercase;
  text-wrap: balance;
  overflow-wrap: anywhere;
}

.archive-hero h1 { font-size: clamp(3.8rem, 10vw, 9rem); }
.archive-hero h1::after { content: '.'; color: var(--accent); }

.archive-hero .intro {
  max-width: 51rem;
  margin: clamp(1.75rem, 4vw, 2.75rem) 0 0;
  padding-left: 1.4rem;
  border-left: 2px solid var(--accent);
  color: var(--muted);
  font-size: clamp(1rem, 1.8vw, 1.22rem);
  line-height: 1.65;
}

.article-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-bottom: clamp(5rem, 10vw, 9rem);
  border-top: 1px solid var(--rule-bright);
  border-left: 1px solid var(--rule-bright);
}

.article-card {
  position: relative;
  display: grid;
  grid-template-columns: 2rem minmax(0, 1fr);
  grid-template-rows: auto 1fr auto;
  gap: 1rem;
  min-height: 470px;
  padding: clamp(1.5rem, 3vw, 2.5rem);
  border-right: 1px solid var(--rule-bright);
  border-bottom: 1px solid var(--rule-bright);
  background: rgba(255, 255, 255, 0.012);
  overflow: hidden;
}

.article-card::before {
  content: '';
  position: absolute;
  inset: 0 0 auto;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), transparent 76%);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.8s var(--ease);
}

.article-card:hover { background: rgba(0, 196, 255, 0.025); }
.article-card:hover::before { transform: scaleX(1); }

.article-card > .eyebrow {
  grid-column: 1;
  align-items: start;
  color: var(--accent);
}

.article-card > .eyebrow::before { display: none; }
.article-card > div { grid-column: 1 / -1; }

.article-card h2 {
  margin: 1rem 0 1.1rem;
  font: 800 clamp(1.4rem, 2.15vw, 2.25rem)/1.02 var(--display);
  letter-spacing: -0.045em;
  text-transform: uppercase;
  text-wrap: balance;
}

.article-card h2 a:hover { color: var(--accent); }
.article-card p { margin: 0; color: var(--muted); }

.article-card .category {
  color: var(--accent);
  font: 500 0.62rem var(--mono);
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.card-aside {
  grid-column: 1 / -1;
  align-self: end;
  padding-top: 1.4rem;
  border-top: 1px solid var(--rule);
  font: 0.64rem/1.7 var(--mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.article-hero {
  min-height: clamp(520px, 75svh, 800px);
  padding-block: clamp(5rem, 10vw, 8rem) clamp(3rem, 6vw, 5rem);
  border-bottom: 1px solid var(--rule-bright);
}

.article-hero h1 {
  max-width: 15ch;
  font-size: clamp(3rem, 7.8vw, 7.25rem);
}

.article-dek {
  max-width: 52rem;
  margin: clamp(1.75rem, 4vw, 2.5rem) 0;
  padding-left: 1.4rem;
  border-left: 2px solid var(--accent);
  color: var(--muted);
  font-size: clamp(1rem, 1.8vw, 1.25rem);
  line-height: 1.58;
}

.byline {
  display: flex;
  align-items: center;
  gap: 1rem;
  color: var(--dim);
  font: 0.65rem/1.6 var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.byline img {
  width: 46px;
  height: 46px;
  border: 1px solid var(--rule-bright);
  border-radius: 0;
  object-fit: cover;
  filter: grayscale(0.2) contrast(1.05);
}

.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 760px) minmax(190px, 260px);
  justify-content: space-between;
  gap: clamp(3rem, 8vw, 8rem);
  padding-block: clamp(3.5rem, 7vw, 6rem) clamp(6rem, 10vw, 9rem);
}

.prose {
  min-width: 0;
  font-size: clamp(1.03rem, 1.4vw, 1.14rem);
}

.prose > p:first-child {
  color: var(--text);
  font-size: clamp(1.2rem, 2.1vw, 1.55rem);
  line-height: 1.48;
}

.prose p { margin: 0 0 1.55rem; color: #b7b7b7; }

.prose h2 {
  margin: 4.5rem 0 1.35rem;
  font: 800 clamp(2rem, 4vw, 3.4rem)/1 var(--display);
  letter-spacing: -0.045em;
  text-transform: uppercase;
  text-wrap: balance;
}

.prose h2::before {
  content: '// ';
  color: var(--accent);
  font: 500 0.42em var(--mono);
  letter-spacing: 0;
  vertical-align: middle;
}

.prose h3 {
  margin: 3rem 0 0.9rem;
  font: 700 1.22rem/1.25 var(--display);
  letter-spacing: -0.02em;
  text-transform: uppercase;
}

.prose ul,
.prose ol { padding-left: 1.3rem; color: #b7b7b7; }
.prose li { margin-bottom: 0.8rem; }
.prose li::marker { color: var(--accent); }

.prose blockquote {
  margin: 3rem 0;
  padding: 1.6rem 1.8rem;
  border: 1px solid var(--rule-bright);
  border-left: 2px solid var(--accent);
  background: rgba(0, 196, 255, 0.03);
  color: var(--text);
  font: 600 clamp(1.25rem, 2.5vw, 1.8rem)/1.35 var(--display);
  letter-spacing: -0.02em;
}

.prose code { color: var(--accent); font: 0.88em var(--mono); }
.prose a { color: var(--text); border-bottom: 1px solid var(--dim); }
.prose a:hover { color: var(--accent); border-color: var(--accent); }
.prose hr { margin: 4rem 0; border: 0; border-top: 1px solid var(--rule); }

.toc {
  position: sticky;
  top: 105px;
  align-self: start;
  padding: 1.35rem;
  border: 1px solid var(--rule-bright);
  background: rgba(12, 12, 12, 0.72);
  backdrop-filter: blur(16px);
}

.toc h2 {
  margin: 0 0 1rem;
  color: var(--accent);
  font: 500 0.62rem var(--mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.toc a {
  display: block;
  padding: 0.55rem 0;
  border-bottom: 1px solid var(--rule);
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.35;
}

.toc a:last-child { border-bottom: 0; }
.toc a:hover { color: var(--accent); }

.author-box {
  display: grid;
  grid-template-columns: 92px 1fr;
  gap: 1.5rem;
  margin-top: 4.5rem;
  padding: 2rem;
  border: 1px solid var(--rule-bright);
  background: rgba(255, 255, 255, 0.018);
}

.author-box img {
  width: 92px;
  height: 92px;
  object-fit: cover;
  filter: grayscale(0.15);
}

.author-box h2 {
  margin: 0 0 0.6rem;
  font: 800 1.45rem/1.1 var(--display);
  letter-spacing: -0.025em;
  text-transform: uppercase;
}

.author-box p { margin: 0; color: var(--muted); font-size: 0.92rem; }

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  padding: 3rem max(var(--gutter), calc((100vw - 1440px) / 2 + var(--gutter)));
  border-top: 1px solid var(--rule);
  background: var(--surface);
  color: var(--dim);
  font: 0.66rem var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.site-footer a:hover { color: var(--accent); }

@media (max-width: 980px) {
  .article-list { grid-template-columns: 1fr; }
  .article-card { min-height: 320px; }
}

@media (max-width: 760px) {
  .site-header { min-height: 64px; }
  .site-nav a::before { display: none; }
  .article-layout { grid-template-columns: 1fr; }
  .toc { position: static; order: -1; }
  .site-footer { flex-direction: column; }
}

@media (max-width: 520px) {
  .site-nav { gap: 0; }
  .site-nav a { padding-inline: 0.45rem; font-size: 0.64rem; }
  .site-nav a:nth-child(3) { display: none; }
  .archive-hero { min-height: 620px; }
  .archive-hero h1,
  .article-hero h1 { overflow-wrap: normal; }
  .archive-hero h1 { font-size: clamp(2rem, 10vw, 3.25rem); }
  .article-hero h1 { font-size: clamp(1.55rem, 8vw, 2.8rem); }
  .byline { align-items: flex-start; }
  .author-box { grid-template-columns: 64px 1fr; padding: 1.25rem; }
  .author-box img { width: 64px; height: 64px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0.01ms !important; }
}