@font-face {
  font-family: "Bricolage Grotesque";
  src: url("fonts/bricolage.woff2") format("woff2");
  font-weight: 400 800;
  font-stretch: 75% 100%;
  font-display: swap;
}
@font-face {
  font-family: "Instrument Sans";
  src: url("fonts/instrument.woff2") format("woff2");
  font-weight: 400 700;
  font-stretch: 75% 100%;
  font-display: swap;
}
@font-face {
  font-family: "JetBrains Mono";
  src: url("fonts/jetbrains.woff2") format("woff2");
  font-weight: 400 600;
  font-display: swap;
}

:root {
  --paper: #eef2f0;
  --paper-raised: #f7f9f8;
  --ink: #1c2b27;
  --muted: #56665f;
  --rule: #c9d3cf;
  --spruce: #1f6f5c;
  --spruce-soft: #d5e6df;
  --wren: #a86b32;
  --focus: #1f6f5c;

  --display: "Bricolage Grotesque", "Avenir Next", system-ui, sans-serif;
  --body: "Instrument Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --code: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --gutter: clamp(16px, 5vw, 64px);
  --max: 1180px;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #101a17;
    --paper-raised: #16231f;
    --ink: #e4ece8;
    --muted: #93a59e;
    --rule: #26352f;
    --spruce: #5fc2a5;
    --spruce-soft: #1b322b;
    --wren: #e0a15f;
    --focus: #5fc2a5;
  }
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 1.0625rem/1.6 var(--body);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
}

:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
  border-radius: 4px;
}

.wrap {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.skip {
  position: absolute;
  left: -9999px;
}
.skip:focus {
  left: var(--gutter);
  top: 12px;
  background: var(--paper-raised);
  padding: 8px 12px;
  z-index: 10;
}

/* Header */

.site-header {
  padding: 22px 0;
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font: 700 1.25rem/1 var(--display);
  font-variation-settings: "opsz" 24;
  letter-spacing: -0.01em;
}
.brand svg {
  width: 28px;
  height: 28px;
}
.site-nav {
  display: flex;
  gap: clamp(14px, 3vw, 32px);
}
.site-nav a {
  text-decoration: none;
  color: var(--muted);
  font-weight: 500;
  padding: 4px 0;
  border-bottom: 1px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}
.site-nav a:hover {
  color: var(--ink);
  border-bottom-color: var(--rule);
}

/* Hero */

.hero {
  padding: clamp(24px, 6vw, 72px) 0 clamp(48px, 8vw, 104px);
}
.hero .wrap {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  gap: clamp(24px, 4vw, 56px);
  align-items: center;
}
.hero h1 {
  margin: 0 0 24px;
  font: 700 clamp(2.6rem, 6vw, 4.75rem) / 1 var(--display);
  font-variation-settings: "opsz" 96, "wdth" 86;
  letter-spacing: -0.02em;
  max-width: 11ch;
}
.hero .lead {
  margin: 0 0 32px;
  max-width: 34rem;
  color: var(--muted);
  font-size: 1.1875rem;
}
.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.button {
  display: inline-flex;
  align-items: center;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 999px;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid var(--ink);
  transition: transform 0.2s, background-color 0.2s, color 0.2s;
}
.button:hover {
  transform: translateY(-1px);
}
.button-primary {
  background: var(--ink);
  color: var(--paper);
}
.button-quiet {
  background: transparent;
  border-color: var(--rule);
}
.button-quiet:hover {
  border-color: var(--ink);
}

/* Tree stage */

.stage {
  position: relative;
  margin: 0;
}
.stage-canvas {
  position: relative;
  aspect-ratio: 1 / 0.86;
  border-radius: 28px;
  background:
    radial-gradient(120% 90% at 50% 18%, var(--paper-raised) 0%, var(--paper) 70%);
  border: 1px solid var(--rule);
  overflow: hidden;
  touch-action: none;
  cursor: grab;
}
.stage-canvas.dragging {
  cursor: grabbing;
}
.stage-canvas.pointing {
  cursor: pointer;
}
.stage canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}
.stage-hint {
  position: absolute;
  left: 20px;
  bottom: 16px;
  margin: 0;
  font-size: 0.875rem;
  color: var(--muted);
  pointer-events: none;
  transition: opacity 0.6s;
}
.stage-hint.gone {
  opacity: 0;
}
.query {
  margin: 16px 0 12px;
  padding: 14px 18px;
  border-radius: 14px;
  background: var(--paper-raised);
  border: 1px solid var(--rule);
  font: 400 0.9375rem/1.5 var(--code);
  overflow-x: auto;
  white-space: nowrap;
}
.query .fn {
  color: var(--spruce);
}
.query .arg {
  color: var(--wren);
}
.query-note {
  margin: 0 0 12px;
  color: var(--muted);
  font-size: 0.9375rem;
}
.branches {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.branches button {
  font: 500 0.9375rem/1 var(--body);
  color: var(--ink);
  background: transparent;
  border: 1px solid var(--rule);
  border-radius: 999px;
  padding: 9px 14px;
  min-height: 40px;
  cursor: pointer;
  transition: background-color 0.2s, border-color 0.2s, color 0.2s;
}
.branches button:hover {
  border-color: var(--ink);
}
.branches button[aria-pressed="true"] {
  background: var(--wren);
  border-color: var(--wren);
  color: var(--paper);
}

/* Sections */

.section {
  padding: clamp(56px, 9vw, 112px) 0;
  border-top: 1px solid var(--rule);
}
.section h2 {
  margin: 0 0 clamp(28px, 4vw, 48px);
  font: 700 clamp(2rem, 4vw, 3rem) / 1.05 var(--display);
  font-variation-settings: "opsz" 72, "wdth" 88;
  letter-spacing: -0.02em;
  max-width: 18ch;
}

/* Apps by platform */

.platform {
  display: grid;
  grid-template-columns: minmax(140px, 1fr) minmax(0, 4fr);
  gap: 24px;
  padding: 28px 0;
  border-top: 1px solid var(--rule);
}
.platform:first-of-type {
  border-top: 0;
  padding-top: 0;
}
.platform h3 {
  margin: 6px 0 0;
  font: 600 1.25rem/1.2 var(--display);
  font-variation-settings: "opsz" 24;
}
.platform-planned h3,
.platform-planned p {
  color: var(--muted);
}
.platform-planned p {
  margin: 6px 0 0;
}

.product {
  perspective: 1200px;
}
.product-card {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(0, 2fr);
  gap: clamp(20px, 3vw, 40px);
  padding: clamp(24px, 3.5vw, 40px);
  border-radius: 28px;
  background: var(--paper-raised);
  border: 1px solid var(--rule);
  transform-style: preserve-3d;
  transform: rotateX(var(--rx, 0deg)) rotateY(var(--ry, 0deg));
  transition: transform 0.5s cubic-bezier(0.2, 0.7, 0.2, 1);
  will-change: transform;
}
.product-card.tilting {
  transition: transform 0.08s linear;
}
.product-card::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  background: radial-gradient(
    420px circle at var(--gx, 50%) var(--gy, 50%),
    color-mix(in srgb, var(--spruce) 10%, transparent),
    transparent 60%
  );
  opacity: var(--glow, 0);
  transition: opacity 0.4s;
}
.product-card h4 {
  margin: 0 0 12px;
  font: 700 clamp(1.6rem, 3vw, 2.25rem) / 1.05 var(--display);
  font-variation-settings: "opsz" 48, "wdth" 90;
  letter-spacing: -0.02em;
  transform: translateZ(30px);
}
.product-card .summary {
  margin: 0 0 24px;
  color: var(--muted);
  max-width: 34rem;
}
.status {
  display: inline-block;
  margin: 0 0 20px;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--spruce-soft);
  color: var(--spruce);
  font-size: 0.875rem;
  font-weight: 600;
}
.features {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
  align-content: start;
  transform: translateZ(18px);
}
.features li {
  padding-left: 22px;
  position: relative;
}
.features li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 0.55em;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  border: 2px solid var(--spruce);
}
.features code {
  font: 400 0.9em var(--code);
}
.product-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* Principles */

.principles {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(24px, 4vw, 56px);
  margin: 0;
}
.principles dt {
  font: 600 1.25rem/1.25 var(--display);
  font-variation-settings: "opsz" 24;
  margin: 0 0 8px;
}
.principles dd {
  margin: 0;
  color: var(--muted);
}

/* Footer */

.site-footer {
  padding: 40px 0 56px;
  border-top: 1px solid var(--rule);
  color: var(--muted);
  font-size: 0.9375rem;
}
.site-footer .wrap {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 16px 40px;
}
.site-footer p {
  margin: 0;
  max-width: 48rem;
}
.site-footer nav {
  display: flex;
  gap: 24px;
}

/* Responsive */

@media (max-width: 900px) {
  .hero .wrap {
    grid-template-columns: minmax(0, 1fr);
  }
  .hero h1 {
    max-width: 14ch;
  }
  .product-card {
    grid-template-columns: minmax(0, 1fr);
  }
  .principles {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 640px) {
  .platform {
    grid-template-columns: minmax(0, 1fr);
    gap: 12px;
  }
  .site-nav a:not(.keep) {
    display: none;
  }
  .stage-canvas {
    aspect-ratio: 1 / 1;
    border-radius: 20px;
  }
  .query {
    white-space: normal;
  }
}

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