:root {
  --orange: #ff7415;
  --ink: #242629;
  --muted: #69707a;
  --paper: #f7f8fa;
  --panel: #ffffff;
  --line: #dfe4ea;
  --teal: #1f9a9a;
  --blue: #315bff;
  --shadow: 0 18px 45px rgba(36, 38, 41, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  overflow-x: hidden;
  color: var(--ink);
  background:
    linear-gradient(180deg, rgba(247, 248, 250, 0.95), rgba(237, 241, 245, 0.96)),
    #f7f8fa;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.page {
  width: min(1180px, calc(100% - 36px));
  margin: 0 auto;
  padding: 36px 0 44px;
}

.masthead {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 28px;
}

.masthead > div {
  min-width: 0;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--orange);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
p {
  margin: 0;
}

h1 {
  max-width: 780px;
  font-size: clamp(2rem, 4vw, 4.4rem);
  line-height: 0.96;
  letter-spacing: 0;
  overflow-wrap: break-word;
}

.replay {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  min-width: 132px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  background: var(--panel);
  box-shadow: 0 6px 18px rgba(36, 38, 41, 0.08);
  cursor: pointer;
  font: inherit;
  font-weight: 750;
}

.replay:hover {
  border-color: rgba(255, 116, 21, 0.48);
}

.replay:active {
  transform: translateY(1px);
}

.gallery {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.demo-card {
  min-width: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.demo-card.wide {
  grid-column: 1 / -1;
}

.demo-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  min-height: 58px;
  padding: 16px 18px 12px;
  border-bottom: 1px solid var(--line);
}

.demo-head h2 {
  flex: 0 0 auto;
  font-size: 1rem;
  letter-spacing: 0;
}

.demo-head span {
  min-width: 0;
  overflow: hidden;
  text-align: right;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 650;
}

.scene {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 295px;
  padding: 34px;
  isolation: isolate;
  background:
    linear-gradient(135deg, rgba(255, 116, 21, 0.08), transparent 45%),
    radial-gradient(circle at 78% 18%, rgba(31, 154, 154, 0.16), transparent 32%),
    #ffffff;
}

.demo-card.wide .scene {
  min-height: 360px;
}

.mark-svg {
  width: min(58%, 244px);
  min-width: 172px;
  overflow: visible;
  filter: drop-shadow(0 18px 22px rgba(255, 116, 21, 0.16));
}

.wide .mark-svg {
  width: min(38%, 276px);
}

.tile {
  fill: var(--orange);
  transform-box: fill-box;
  transform-origin: center;
  will-change: transform, opacity, fill-opacity, stroke-opacity;
}

.halo,
.sweep,
.particle {
  transform-box: view-box;
  transform-origin: 243.5px 243px;
  pointer-events: none;
}

.assemble .tile {
  animation: assembleTile 4.9s cubic-bezier(0.18, 0.9, 0.2, 1) infinite;
  animation-delay: calc(var(--assemble-delay) * 1ms);
  opacity: 0;
}

.ripple .tile {
  animation: rippleTile 3.9s cubic-bezier(0.2, 0.8, 0.2, 1) infinite;
  animation-delay: calc(var(--ripple-delay) * 1ms);
}

.ripple .halo {
  fill: none;
  stroke: var(--orange);
  stroke-width: 6;
  opacity: 0;
  transform: scale(0.28);
  animation: haloPulse 3.9s ease-out infinite;
}

.ripple .halo.alt {
  stroke: var(--teal);
  animation-delay: 0.55s;
}

.draw .tile {
  fill: var(--orange);
  fill-opacity: 0;
  stroke: var(--orange);
  stroke-opacity: 0;
  stroke-width: 8;
  vector-effect: non-scaling-stroke;
  animation: traceTile 5.2s ease-in-out infinite;
  animation-delay: calc(var(--trace-delay) * 1ms);
}

.scanner .tile {
  animation: scanTile 4.5s cubic-bezier(0.2, 0.8, 0.2, 1) infinite;
  animation-delay: calc(var(--scan-delay) * 1ms);
  opacity: 0.18;
}

.scanner .sweep {
  stroke: var(--blue);
  stroke-width: 7;
  stroke-linecap: round;
  opacity: 0;
  animation: sweepRotate 4.5s linear infinite;
}

.burst .tile {
  animation: burstTile 5s cubic-bezier(0.17, 0.85, 0.26, 1) infinite;
  animation-delay: calc(var(--burst-delay) * 1ms);
  opacity: 0;
}

.burst .particle {
  fill: var(--teal);
  animation: particlePop 5s ease-out infinite;
  animation-delay: calc(var(--particle-delay) * 1ms);
  opacity: 0;
}

.restarting .tile,
.restarting .halo,
.restarting .sweep,
.restarting .particle {
  animation: none !important;
}

@keyframes assembleTile {
  0% {
    opacity: 0;
    transform: translate(var(--fly-x), var(--fly-y)) scale(0.18) rotate(-22deg);
  }
  16% {
    opacity: 1;
  }
  30%,
  76% {
    opacity: 1;
    transform: translate(0, 0) scale(1) rotate(0deg);
  }
  88%,
  100% {
    opacity: 0;
    transform: translate(var(--exit-x), var(--exit-y)) scale(0.86) rotate(8deg);
  }
}

@keyframes rippleTile {
  0%,
  15% {
    opacity: 0.72;
    transform: scale(0.88);
  }
  28% {
    opacity: 1;
    transform: scale(1.14);
  }
  42%,
  80% {
    opacity: 1;
    transform: scale(1);
  }
  100% {
    opacity: 0.72;
    transform: scale(0.88);
  }
}

@keyframes haloPulse {
  0%,
  18% {
    opacity: 0;
    transform: scale(0.28);
  }
  22% {
    opacity: 0.42;
  }
  58% {
    opacity: 0;
    transform: scale(1);
  }
  100% {
    opacity: 0;
    transform: scale(1);
  }
}

@keyframes traceTile {
  0%,
  10% {
    opacity: 0;
    fill-opacity: 0;
    stroke-opacity: 0;
    transform: scale(0.86);
  }
  22%,
  42% {
    opacity: 1;
    fill-opacity: 0;
    stroke-opacity: 1;
    transform: scale(1);
  }
  58%,
  78% {
    opacity: 1;
    fill-opacity: 1;
    stroke-opacity: 1;
    transform: scale(1);
  }
  100% {
    opacity: 0;
    fill-opacity: 1;
    stroke-opacity: 0;
    transform: scale(0.96);
  }
}

@keyframes scanTile {
  0%,
  18% {
    opacity: 0.18;
    transform: scale(0.82);
  }
  31% {
    opacity: 1;
    transform: scale(1.16);
  }
  43%,
  82% {
    opacity: 1;
    transform: scale(1);
  }
  100% {
    opacity: 0.18;
    transform: scale(0.82);
  }
}

@keyframes sweepRotate {
  0% {
    opacity: 0;
    transform: rotate(-80deg);
  }
  14% {
    opacity: 0.85;
  }
  70% {
    opacity: 0.85;
    transform: rotate(280deg);
  }
  100% {
    opacity: 0;
    transform: rotate(280deg);
  }
}

@keyframes burstTile {
  0% {
    opacity: 0;
    transform: translate(var(--center-x), var(--center-y)) scale(0.04) rotate(-18deg);
  }
  16% {
    opacity: 1;
    transform: translate(var(--center-x), var(--center-y)) scale(0.18) rotate(14deg);
  }
  44% {
    opacity: 1;
    transform: translate(var(--overshoot-x), var(--overshoot-y)) scale(1.12) rotate(0deg);
  }
  58%,
  80% {
    opacity: 1;
    transform: translate(0, 0) scale(1) rotate(0deg);
  }
  100% {
    opacity: 0;
    transform: translate(0, 0) scale(0.9) rotate(0deg);
  }
}

@keyframes particlePop {
  0%,
  30% {
    opacity: 0;
    transform: translate(0, 0) scale(0.2);
  }
  45% {
    opacity: 0.9;
  }
  72%,
  100% {
    opacity: 0;
    transform: translate(var(--particle-x), var(--particle-y)) scale(1);
  }
}

@media (max-width: 760px) {
  .page {
    width: 100%;
    padding: 24px 12px 44px;
  }

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

  .masthead > div {
    width: 100%;
  }

  h1 {
    max-width: 17rem;
    font-size: 1.85rem;
    line-height: 1.05;
  }

  .demo-head span {
    display: none;
  }

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

  .demo-card.wide {
    grid-column: auto;
  }

  .scene,
  .demo-card.wide .scene {
    min-height: 260px;
    padding: 26px;
  }

  .mark-svg,
  .wide .mark-svg {
    width: min(72%, 230px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .tile,
  .halo,
  .sweep,
  .particle {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}