:root {
  color-scheme: light dark;
  --page: #f4f6f8;
  --text: #17212b;
  --muted: #4a5a68;
  --surface: #ffffff;
  --line: #d3dbe2;
  --accent: #176b87;
  --on-accent: #ffffff;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 17px;
  line-height: 1.6;
}

@media (prefers-color-scheme: dark) {
  :root {
    --page: #10161c;
    --text: #f2f6f8;
    --muted: #aebdc8;
    --surface: #17202a;
    --line: #2a3643;
    --accent: #55b6d3;
    --on-accent: #10161c;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--page);
  color: var(--text);
}

.wrap {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 20px;
}

h1,
h2,
h3 {
  line-height: 1.2;
  margin: 0 0 0.6em;
}

h1 {
  font-size: clamp(2rem, 5.5vw, 3.4rem);
  max-width: 18ch;
}

h2 {
  font-size: clamp(1.5rem, 3.5vw, 2.1rem);
}

h3 {
  font-size: 1.05rem;
}

p {
  margin: 0 0 1em;
}

a {
  color: var(--accent);
}

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

.hero {
  padding: 72px 0 56px;
}

.eyebrow {
  color: var(--accent);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.85rem;
}

.lead {
  font-size: 1.2rem;
  color: var(--muted);
  max-width: 60ch;
}

.button {
  display: inline-block;
  padding: 0.75em 1.3em;
  border-radius: 6px;
  background: var(--accent);
  color: var(--on-accent);
  font-weight: 600;
  text-decoration: none;
}

.button:hover {
  filter: brightness(1.08);
}

main section {
  padding: 56px 0;
}

main section.band {
  background: var(--surface);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.features {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.features .gallery {
  margin-top: 0;
}

.feature {
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--page);
}

.features p {
  margin: 0;
  color: var(--muted);
}

.screenshot {
  margin: 28px 0 0;
}

.screenshot img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: 10px;
}

.screenshot figcaption {
  margin-top: 10px;
  color: var(--muted);
  font-size: 0.92rem;
}

.zoom {
  display: block;
  width: 100%;
  padding: 0;
  border: 0;
  border-radius: 10px;
  background: none;
  cursor: zoom-in;
}

.zoom:focus-visible,
.viewer-close:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
}

.viewer {
  position: fixed;
  inset: 0;
  width: fit-content;
  height: fit-content;
  max-width: 96vw;
  max-height: 96vh;
  margin: auto;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface);
  color: var(--text);
}

.viewer::backdrop {
  background: rgba(8, 12, 16, 0.8);
}

.viewer figure {
  margin: 0;
  padding: 12px;
}

.viewer img {
  display: block;
  width: auto;
  max-width: 100%;
  height: auto;
  max-height: calc(96vh - 60px);
  border-radius: 6px;
}

.viewer figcaption {
  margin-top: 10px;
  color: var(--muted);
  font-size: 0.92rem;
}

.viewer-close {
  position: absolute;
  top: 8px;
  right: 8px;
  padding: 6px 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--surface);
  color: var(--text);
  font: inherit;
  font-size: 0.92rem;
  cursor: pointer;
}

.gallery {
  display: grid;
  gap: 28px;
  margin-top: 28px;
}

.gallery .screenshot {
  margin: 0;
}

.columns {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

.columns ul {
  margin: 0;
  padding-left: 1.2em;
}

.columns li {
  margin-bottom: 0.6em;
}

footer {
  padding: 28px 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.footer-row {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

footer p {
  margin: 0;
}

@media (min-width: 720px) {
  .hero {
    padding: 104px 0 80px;
  }

  .features {
    grid-template-columns: repeat(2, 1fr);
  }

  .features .gallery {
    grid-column: 1 / -1;
  }

  .columns {
    grid-template-columns: 1fr 1fr;
    gap: 48px;
  }

  .gallery {
    grid-template-columns: 1fr 1fr;
  }

  .footer-row {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

.lanes {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  margin-top: 32px;
}

.lane-art {
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface);
}

.lane-art svg {
  display: block;
  width: 100%;
  height: auto;
}

.lane-art .flow-narrow {
  display: none;
}

.lane-steps {
  display: grid;
  gap: 24px;
}

.step-text h3 {
  margin: 0 0 6px;
  font-size: 1.1rem;
}

.step-text p {
  margin: 0;
  color: var(--muted);
}

.track {
  fill: none;
  stroke: var(--line);
  stroke-width: 1.5;
}

.src,
.box,
.node,
.disk,
.chip {
  fill: var(--page);
  stroke: var(--accent);
  stroke-width: 1.5;
}

.table {
  fill: var(--surface);
  stroke: var(--line);
  stroke-width: 1.5;
}

.head {
  fill: var(--line);
}

.replica-tile {
  fill: var(--surface);
  stroke: var(--line);
  stroke-width: 1.5;
  opacity: 0.6;
}

.pkt {
  fill: var(--accent);
}

.slot,
.slot-rest,
.terminal {
  fill: var(--accent);
}

.slot-rest {
  display: none;
}

.gear {
  fill: none;
  stroke: var(--accent);
  stroke-width: 2;
  stroke-dasharray: 5 4;
  transform-box: fill-box;
  transform-origin: center;
  animation: gear-spin 6s linear infinite;
}

.drop {
  fill: none;
  stroke: var(--muted);
  stroke-width: 1.2;
  stroke-dasharray: 2 2;
  animation: drop-fade 3.4s ease-in infinite;
}

.drop-late {
  animation-delay: 1.7s;
}

.rec {
  fill: var(--accent);
  opacity: 0.6;
}

.tunnel {
  fill: var(--page);
  stroke: var(--accent);
  stroke-width: 1.5;
}

.tunnel-glow {
  fill: none;
  stroke: var(--accent);
  stroke-width: 4;
  animation: glow 2.4s ease-in-out infinite;
}

.lock-fill {
  fill: var(--accent);
}

.lock-arc {
  fill: none;
  stroke: var(--accent);
  stroke-width: 2;
}

.bar {
  fill: var(--line);
}

.bar-hit {
  fill: var(--accent);
}

.label {
  fill: var(--muted);
  font-size: 15px;
  text-anchor: middle;
}

.label-sm {
  fill: var(--muted);
  font-size: 13px;
  text-anchor: middle;
}

.label-start {
  fill: var(--muted);
  font-size: 15px;
  text-anchor: start;
}

.table-label {
  fill: var(--text);
  font-size: 12px;
  text-anchor: middle;
}

.lane-name {
  fill: var(--accent);
  font-size: 15px;
  font-weight: 600;
}

.pin {
  fill: none;
  stroke: var(--accent);
  stroke-width: 2;
  stroke-linecap: round;
}

.die {
  fill: var(--accent);
}

.die-text {
  fill: var(--on-accent);
  font-family: ui-monospace, Consolas, monospace;
  font-size: 9px;
  text-anchor: middle;
  dominant-baseline: middle;
}

@keyframes drop-fade {
  0% {
    opacity: 0;
    transform: translateY(0);
  }
  25% {
    opacity: 0.9;
  }
  100% {
    opacity: 0;
    transform: translateY(14px);
  }
}

@keyframes gear-spin {
  to {
    transform: rotate(360deg);
  }
}

@keyframes glow {
  0%,
  100% {
    opacity: 0.25;
  }
  50% {
    opacity: 0.9;
  }
}

@media (prefers-reduced-motion: reduce) {
  .pkt,
  .slot {
    display: none;
  }

  .slot-rest {
    display: inline;
  }

  .drop,
  .gear,
  .tunnel-glow,
  .bar-hit {
    display: none;
  }

  .drop {
    opacity: 0.6;
  }

  .tunnel-glow {
    opacity: 0.6;
  }
}

.tuned {
  display: grid;
  gap: 20px;
  align-items: center;
  margin-top: 28px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface);
}

.chip-art {
  width: 120px;
  height: auto;
}

@media (max-width: 719px) {
  .lane-art .flow-wide {
    display: none;
  }

  .lane-art .flow-narrow {
    display: block;
  }

  .lane-steps {
    margin-top: 20px;
  }
}

@media (min-width: 720px) {
  .steps-ingest {
    grid-template-columns: repeat(3, 1fr);
  }

  .steps-query {
    margin-top: 28px;
  }

  .tuned {
    grid-template-columns: 160px 1fr;
  }
}