:root {
  --paper: #f1eee5;
  --paper-2: #e9e5d9;
  --ink: #15140f;
  --ink-2: #4a473d;
  --ink-3: #8a8676;
  --rule: rgba(21, 20, 15, 0.14);
  --grid: rgba(21, 20, 15, 0.055);
  --signal: #2a3df5;
  --signal-ink: #f1eee5;
  --serif: "Instrument Serif", "Times New Roman", serif;
  --sans: "Hanken Grotesk", "Helvetica Neue", sans-serif;
  --mono: "Geist Mono", ui-monospace, "SF Mono", Menlo, monospace;
  --gutter: clamp(16px, 4vw, 56px);
  --max: 1240px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background-color: var(--paper);
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 24px 24px;
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 50;
  opacity: 0.35;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 0.08 0 0 0 0 0.08 0 0 0 0 0.06 0 0 0 0.09 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

a { color: inherit; }
::selection { background: var(--signal); color: var(--signal-ink); }

/* ---------- bar ---------- */
.bar {
  max-width: var(--max);
  margin: 0 auto;
  padding: 22px var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--rule);
}
.mark { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; }
.mark-box {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  background: var(--ink);
  color: var(--paper);
  font: 500 12px/1 var(--mono);
  letter-spacing: 0.04em;
}
.mark-name { font: 500 13px/1 var(--mono); letter-spacing: 0.02em; }
.nav { display: flex; gap: 28px; }
.nav a {
  font: 500 12px/1 var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  text-decoration: none;
  color: var(--ink-2);
  padding: 6px 0;
  background: linear-gradient(var(--signal), var(--signal)) left bottom / 0 1px no-repeat;
  transition: background-size 0.3s ease, color 0.3s ease;
}
.nav a:hover, .nav a:focus-visible { color: var(--ink); background-size: 100% 1px; }

/* ---------- hero ---------- */
main { max-width: var(--max); margin: 0 auto; padding: 0 var(--gutter); }

.hero {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  column-gap: 24px;
  padding: clamp(56px, 10vw, 128px) 0 0;
}
.eyebrow {
  grid-column: 1 / -1;
  margin: 0 0 18px;
  font: 500 12px/1 var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--ink-2);
}
.eyebrow::before {
  content: "";
  display: inline-block;
  width: 28px;
  height: 1px;
  margin-right: 12px;
  vertical-align: middle;
  background: var(--signal);
}
.title {
  grid-column: 1 / 9;
  margin: 0;
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(88px, 17vw, 236px);
  line-height: 0.82;
  letter-spacing: -0.035em;
}
.title em { font-style: italic; color: var(--signal); padding-left: 0.02em; }
.lede {
  grid-column: 1 / 7;
  margin: clamp(28px, 4vw, 44px) 0 0;
  font-size: clamp(19px, 2vw, 23px);
  line-height: 1.4;
  color: var(--ink-2);
  max-width: 30ch;
}
.meta {
  grid-column: 9 / -1;
  grid-row: 2 / 4;
  align-self: end;
  margin: 0;
  border-top: 1px solid var(--ink);
}
.meta div {
  display: grid;
  grid-template-columns: 96px 1fr;
  gap: 12px;
  padding: 13px 0;
  border-bottom: 1px solid var(--rule);
}
.meta dt {
  font: 500 11px/1.7 var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--ink-3);
}
.meta dd { margin: 0; font-size: 15px; line-height: 1.45; }
.pulse {
  display: inline-block;
  width: 7px;
  height: 7px;
  margin-right: 9px;
  border-radius: 50%;
  background: var(--signal);
  vertical-align: 1px;
  animation: pulse 2.4s ease-in-out infinite;
}

.trace {
  grid-column: 1 / -1;
  width: 100%;
  height: clamp(64px, 9vw, 120px);
  margin-top: clamp(40px, 6vw, 72px);
  overflow: visible;
}
.trace-axis { stroke: var(--rule); stroke-width: 1; vector-effect: non-scaling-stroke; stroke-dasharray: 2 5; }
.trace-line {
  fill: none;
  stroke: var(--ink);
  stroke-width: 1.5;
  vector-effect: non-scaling-stroke;
  stroke-linejoin: round;
  stroke-dasharray: 1;
  stroke-dashoffset: 1;
  animation: draw 2.2s cubic-bezier(0.65, 0, 0.35, 1) 0.5s forwards;
}

/* ---------- experiments ---------- */
.experiments { padding: clamp(56px, 8vw, 96px) 0 0; }
.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--ink);
}
.section-head h2, .about h2 {
  margin: 0;
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(36px, 4.6vw, 56px);
  line-height: 1;
  letter-spacing: -0.01em;
}
.count { font: 500 12px/1 var(--mono); letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-3); }

.cards {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-left: 1px solid var(--rule);
}
.card {
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
.card-paper {
  display: flex;
  justify-content: space-between;
  padding: 12px 26px;
  border-top: 1px solid var(--rule);
  font: 500 11px/1.4 var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  text-decoration: none;
  color: var(--signal);
  transition: background 0.3s ease, color 0.3s ease;
}
.card-paper:hover, .card-paper:focus-visible { background: var(--signal); color: var(--signal-ink); outline: none; }
.card-main {
  position: relative;
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 340px;
  padding: 26px 26px 22px;
  text-decoration: none;
  background: transparent;
  isolation: isolate;
  transition: color 0.35s ease;
}
.card-main::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: var(--ink);
  transform: scaleY(0);
  transform-origin: bottom;
  transition: transform 0.45s cubic-bezier(0.7, 0, 0.2, 1);
}
.card-main:hover, .card-main:focus-visible { color: var(--paper); outline: none; }
.card-main:hover::before, .card-main:focus-visible::before { transform: scaleY(1); }
.card-main:focus-visible { box-shadow: inset 0 0 0 2px var(--signal); }

.card-id { font: 500 12px/1 var(--mono); letter-spacing: 0.08em; color: var(--signal); }
.card-tag {
  margin-top: 10px;
  font: 400 11px/1 var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--ink-3);
  transition: color 0.35s ease;
}
.card h3 {
  margin: 0 0 12px;
  padding-top: 56px;
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(40px, 4.2vw, 54px);
  line-height: 0.95;
  letter-spacing: -0.015em;
}
.card p {
  margin: 0 0 26px;
  font-size: 15.5px;
  line-height: 1.5;
  color: var(--ink-2);
  max-width: 34ch;
  transition: color 0.35s ease;
}
.card-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid var(--rule);
  transition: border-color 0.35s ease;
}
.url { font: 400 12px/1 var(--mono); letter-spacing: 0.02em; }
.arrow {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border: 1px solid currentColor;
  border-radius: 50%;
  font-size: 15px;
  transition: transform 0.35s ease, background 0.35s ease, border-color 0.35s ease, color 0.35s ease;
}
.card-main:hover .card-tag, .card-main:focus-visible .card-tag,
.card-main:hover p, .card-main:focus-visible p { color: rgba(241, 238, 229, 0.7); }
.card-main:hover .card-foot, .card-main:focus-visible .card-foot { border-color: rgba(241, 238, 229, 0.2); }
.card-main:hover .arrow, .card-main:focus-visible .arrow {
  background: var(--signal);
  border-color: var(--signal);
  color: var(--signal-ink);
  transform: rotate(45deg);
}

/* ---------- about ---------- */
.about {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  column-gap: 24px;
  padding: clamp(72px, 10vw, 128px) 0 clamp(72px, 10vw, 120px);
}
.about h2 { grid-column: 1 / 5; }
.about-body { grid-column: 6 / -1; }
.about-body p { margin: 0 0 20px; font-size: clamp(18px, 1.7vw, 21px); line-height: 1.5; max-width: 52ch; }
.about-body .note {
  margin-top: 32px;
  padding-top: 16px;
  border-top: 1px solid var(--rule);
  font-size: 14px;
  color: var(--ink-3);
}

/* ---------- footer ---------- */
.foot {
  max-width: var(--max);
  margin: 0 auto;
  padding: 22px var(--gutter) 28px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  border-top: 1px solid var(--ink);
  font-size: 13px;
  color: var(--ink-2);
}
.foot-mono { font: 400 12px/1.6 var(--mono); }

/* ---------- motion ---------- */
.reveal {
  opacity: 0;
  transform: translateY(14px);
  animation: rise 0.8s cubic-bezier(0.2, 0.7, 0.2, 1) forwards;
  animation-delay: calc(var(--d, 0) * 90ms + 80ms);
}
@keyframes rise { to { opacity: 1; transform: none; } }
@keyframes draw { to { stroke-dashoffset: 0; } }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.25; } }

@media (prefers-reduced-motion: reduce) {
  .reveal, .trace-line, .pulse { animation: none; opacity: 1; transform: none; stroke-dashoffset: 0; }
  .card-main::before, .arrow { transition: none; }
}

/* ---------- responsive ---------- */
@media (max-width: 960px) {
  .title { grid-column: 1 / -1; }
  .lede { grid-column: 1 / -1; }
  .meta { grid-column: 1 / -1; grid-row: auto; margin-top: 40px; }
  .cards { grid-template-columns: 1fr; }
  .card-main { min-height: 0; }
  .card h3 { padding-top: 40px; }
  .about h2, .about-body { grid-column: 1 / -1; }
  .about h2 { margin-bottom: 28px; }
}
@media (max-width: 520px) {
  body { font-size: 16px; }
  .nav { gap: 18px; }
  .mark-name { display: none; }
  .meta div { grid-template-columns: 84px 1fr; }
  .card-main { padding: 22px 18px 18px; }
  .foot { flex-direction: column; gap: 6px; }
}