:root {
  color-scheme: dark;
  --ink: #181818;
  --paper: #f7f7f4;
  --kernel: clamp(1.04rem, 1.46vw, 1.36rem);
  --step: calc(var(--kernel) * 0.984375);
}

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

html {
  min-width: 20rem;
  min-height: 100%;
  background: var(--ink);
}

body {
  display: grid;
  min-width: 20rem;
  min-height: 100svh;
  margin: 0;
  overflow: hidden;
  place-items: center;
  background: var(--ink);
  color: var(--paper);
  font-family: Helvetica, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

button {
  -webkit-tap-highlight-color: transparent;
}

.hero {
  display: grid;
  width: 100%;
  min-height: 100svh;
  place-items: center;
}

.logo-stage {
  position: relative;
  z-index: 10;
  display: grid;
  width: min(62vw, 46rem);
  height: min(62vh, 40rem);
  margin: 0;
  padding: 0;
  place-items: center;
  border: 0;
  border-radius: 50%;
  outline: 0;
  background: transparent;
  color: inherit;
  cursor: pointer;
  touch-action: manipulation;
}

.logo-stage:focus-visible .mark {
  outline: 1px solid rgba(247, 247, 244, 0.42);
  outline-offset: 0.75rem;
}

.logo-stage:disabled {
  cursor: default;
}

.mark {
  display: block;
  width: calc(var(--kernel) + var(--step));
  height: calc(var(--kernel) + (var(--step) * 2));
  isolation: isolate;
  overflow: visible;
}

.mark--loading .kernel {
  opacity: 0;
  transform: scale(0);
}

.kernel {
  fill: var(--paper);
  transform-box: fill-box;
  transform-origin: center;
  will-change: transform;
}

@media (hover: hover) and (pointer: fine) {
  .mark--interactive .kernel {
    transition: transform 650ms cubic-bezier(0.22, 1, 0.36, 1);
  }

  .mark--interactive .kernel:hover {
    transform: scale(1.5);
  }
}

.burst-layer {
  position: fixed;
  z-index: 30;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  perspective: 1200px;
  perspective-origin: 50% 50%;
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
}

.burst-composition {
  position: absolute;
  transform: translate3d(0, 0, 0);
  transform-style: preserve-3d;
  will-change: transform;
}

.burst-layer.is-ready {
  cursor: grab;
  pointer-events: auto;
}

.burst-layer.is-ready .burst-bubble {
  pointer-events: auto;
}

.burst-layer.is-ready.is-dragging {
  cursor: grabbing;
}

.burst-message {
  position: absolute;
  top: 50%;
  left: 50%;
  width: min(72vw, 34rem);
  margin: 0;
  pointer-events: none;
  transform: translate3d(-50%, -50%, 0);
  transform-origin: center;
  transform-style: preserve-3d;
  will-change: opacity, transform;
}

.burst-message__visual {
  display: block;
  color: var(--paper);
  font-size: clamp(1.2rem, 3vw, 3.25rem);
  font-weight: 400;
  letter-spacing: -0.025em;
  line-height: 0.98;
  opacity: 0;
  text-align: center;
  transform: scale(0.94);
  transform-origin: center;
  will-change: opacity, transform;
}

.burst-message__visual > span {
  display: block;
}

.burst-message__visual > .burst-message__eyebrow {
  margin-bottom: 0.8em;
  font-size: clamp(0.62rem, 0.85vw, 0.8rem);
  font-weight: 500;
  letter-spacing: 0.14em;
  line-height: 1.2;
}

.burst-bubble {
  position: absolute;
  top: 50%;
  left: 50%;
  display: grid;
  width: var(--kernel);
  height: var(--kernel);
  place-items: center;
  font-size: calc(var(--kernel) * 0.42);
  contain: layout style;
  pointer-events: none;
  transform-style: preserve-3d;
  will-change: top, left, transform, opacity;
}

.burst-bubble__visual {
  display: grid;
  width: 100%;
  height: 100%;
  place-items: center;
  border-radius: 50%;
  background: var(--paper);
  color: var(--ink);
  font-size: inherit;
  overflow: hidden;
  transform-origin: center;
  will-change: opacity, transform;
}

/* Letter circles are rasterized as GPU layers during the 3D scene. Give
   those layers twice the native pixel area, then display them at half scale,
   so foreground perspective enlargement retains clean glyph edges. */
.burst-bubble__visual--hires {
  width: 200%;
  height: 200%;
  font-size: 200%;
  transform: scale(0.5);
}

.burst-bubble__glyph {
  font-weight: 400;
  line-height: 1;
  transform: translateY(0.025em);
}

.burst-bubble__visual--media {
  background: transparent;
}

.burst-bubble__visual--white {
  background: #fff;
}

.burst-bubble__media {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  pointer-events: none;
  user-select: none;
  -webkit-user-drag: none;
}

@media (hover: none), (pointer: coarse) {
  .logo-stage {
    width: min(86vw, 34rem);
    height: min(68vh, 34rem);
    cursor: pointer;
  }

}

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