:root {
  color-scheme: dark;
  --background: #090b11;
  --ink: #f5f3ed;
  --muted: #a8a9b1;
  --acid: #d9ff6f;
  --violet: #b39aff;
  --coral: #ff8d75;
  --cyan: #79e7ff;
  --line: rgb(255 255 255 / 13%);
  --page-x: clamp(1.25rem, 5vw, 5rem);
  --display: clamp(3.6rem, 7.4vw, 8rem);
  --radius: 1.35rem;
  --motion-fast: 180ms;
  --motion-major: 700ms;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  scroll-behavior: smooth;
  background: var(--background);
}

body {
  min-width: 320px;
  margin: 0;
  overflow-x: clip;
  color: var(--ink);
  background:
    radial-gradient(circle at 78% 11%, rgb(179 154 255 / 16%), transparent 28rem),
    radial-gradient(circle at 8% 68%, rgb(121 231 255 / 8%), transparent 27rem),
    var(--background);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
}

button,
a {
  color: inherit;
}

button {
  border: 0;
}

a {
  text-decoration: none;
}

:focus-visible {
  outline: 2px solid var(--acid);
  outline-offset: 5px;
}

.site-header {
  display: flex;
  min-height: 5.5rem;
  align-items: center;
  padding: 0 var(--page-x);
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.78rem;
  font-weight: 720;
  letter-spacing: 0.24em;
}

.brand-mark {
  position: relative;
  width: 2rem;
  height: 0.75rem;
}

.brand-mark::before,
.brand-mark::after {
  position: absolute;
  top: 0;
  width: 0.75rem;
  height: 0.75rem;
  content: "";
  border-radius: 50%;
  box-shadow: 0 0 1.25rem currentColor;
}

.brand-mark::before {
  left: 0;
  color: var(--violet);
  background: var(--violet);
}

.brand-mark::after {
  right: 0;
  color: var(--cyan);
  background: var(--cyan);
}

.scene {
  position: relative;
  min-height: 100svh;
  padding: clamp(4rem, 9vw, 9rem) var(--page-x);
  border-bottom: 1px solid var(--line);
}

.scene-taste {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(26rem, 1.1fr);
  gap: clamp(2rem, 7vw, 8rem);
  align-items: center;
}

.hero-copy {
  position: relative;
  z-index: 2;
}

h1,
h2,
p {
  margin-top: 0;
}

h1 {
  max-width: 11ch;
  margin-bottom: 0;
  font-size: var(--display);
  font-weight: 520;
  line-height: 0.9;
  letter-spacing: -0.07em;
}

h1 em {
  color: var(--acid);
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 400;
}

.hero-copy > p {
  max-width: 31rem;
  margin: clamp(1.75rem, 3.5vw, 3rem) 0 0;
  color: var(--muted);
  font-size: clamp(1rem, 1.5vw, 1.25rem);
  line-height: 1.6;
}

.shape-action,
.reshape {
  display: inline-flex;
  min-width: 13rem;
  min-height: 4.5rem;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  margin-top: 2rem;
  padding: 0 1.5rem;
  border: 1px solid var(--acid);
  color: var(--acid);
  background: transparent;
  font: inherit;
  font-size: 0.82rem;
  font-weight: 720;
  letter-spacing: 0.08em;
  transition:
    color var(--motion-fast) ease,
    background var(--motion-fast) ease,
    transform var(--motion-fast) ease;
}

.shape-action:hover,
.reshape:hover:not(:disabled) {
  color: var(--background);
  background: var(--acid);
  transform: translateY(-2px);
}

.shape-action span,
.reshape span {
  font-size: 1.35rem;
}

.field-stage {
  position: relative;
  min-height: min(46rem, 78svh);
  isolation: isolate;
}

[data-field-canvas],
[data-field-lines] {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

[data-field-canvas] {
  z-index: -2;
}

[data-field-lines] {
  z-index: -1;
  overflow: visible;
}

[data-field-lines] line {
  stroke: rgb(121 231 255 / 32%);
  stroke-width: 0.16;
  vector-effect: non-scaling-stroke;
}

.signal-controls button,
.context-control button,
.reshape {
  min-width: 44px;
  min-height: 44px;
  font: inherit;
}

.signal-controls button {
  position: absolute;
  display: grid;
  width: clamp(4.75rem, 7vw, 6rem);
  aspect-ratio: 1;
  place-items: center;
  padding: 0.4rem;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--ink);
  background: rgb(9 11 17 / 76%);
  font-size: clamp(0.64rem, 0.85vw, 0.76rem);
  font-weight: 650;
  letter-spacing: 0.08em;
  cursor: pointer;
  transform: translate(-50%, -50%);
  transition:
    transform var(--motion-major) cubic-bezier(.2, .8, .2, 1),
    border-color var(--motion-fast) ease,
    color var(--motion-fast) ease,
    background var(--motion-fast) ease,
    box-shadow var(--motion-fast) ease;
}

.signal-controls button:hover:not(:disabled) {
  border-color: currentColor;
  transform: translate(-50%, -50%) scale(1.06);
}

.signal-controls button:nth-child(1) {
  --signal-color: var(--violet);
  left: 12%;
  top: 21%;
  color: var(--violet);
}

.signal-controls button:nth-child(2) {
  --signal-color: var(--coral);
  right: 11%;
  top: 13%;
  color: var(--coral);
}

.signal-controls button:nth-child(3) {
  --signal-color: var(--cyan);
  right: 7%;
  bottom: 21%;
  color: var(--cyan);
}

.signal-controls button:nth-child(4) {
  --signal-color: var(--acid);
  left: 26%;
  bottom: 13%;
  color: var(--acid);
}

.signal-controls button:nth-child(5) {
  --signal-color: var(--ink);
  left: 47%;
  top: 43%;
  color: var(--ink);
}

.signal-controls button:disabled,
.context-control button:disabled,
.reshape:disabled {
  cursor: default;
  opacity: 0.62;
}

.signal-controls button[aria-pressed="true"] {
  border-color: var(--signal-color);
  color: var(--background);
  background: var(--signal-color);
  box-shadow: 0 0 2.4rem color-mix(in srgb, var(--signal-color) 24%, transparent);
}

.result {
  position: absolute;
  z-index: 3;
  right: 18%;
  bottom: 1%;
  width: min(24rem, 90%);
  padding: 1.4rem;
  border: 1px solid rgb(121 231 255 / 62%);
  border-radius: var(--radius);
  background: rgb(9 11 17 / 88%);
  box-shadow: 0 2rem 5rem rgb(0 0 0 / 42%);
  backdrop-filter: blur(1rem);
}

.result[hidden] {
  display: none;
}

.result-label,
.context-label {
  margin-bottom: 1rem;
  color: var(--cyan);
  font-size: 0.68rem;
  font-weight: 720;
  letter-spacing: 0.16em;
}

.result h2 {
  margin: 0 0 0.5rem;
  font-size: clamp(1.5rem, 2.4vw, 2.25rem);
  font-weight: 520;
  letter-spacing: -0.04em;
}

.result h2 + p {
  max-width: 28ch;
  margin: 0;
  color: var(--muted);
  line-height: 1.5;
}

.result output {
  display: block;
  margin-top: 1.3rem;
  color: var(--cyan);
  font-size: 2rem;
  font-variant-numeric: tabular-nums;
}

.noscript-note {
  position: absolute;
  right: var(--page-x);
  bottom: 1rem;
  color: var(--muted);
  font-size: 0.75rem;
}

.scene-process {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(22rem, 0.72fr);
  gap: 8vw;
}

.process-field {
  position: sticky;
  top: 10vh;
  height: 80vh;
  overflow: hidden;
  border-radius: 50%;
  background:
    radial-gradient(circle, rgb(121 231 255 / 15%) 0 1px, transparent 1.5px) 50% 50% / 1.4rem 1.4rem,
    radial-gradient(circle at center, transparent 0 17%, rgb(121 231 255 / 25%) 17.2% 17.4%, transparent 17.6% 31%, rgb(179 154 255 / 20%) 31.2% 31.4%, transparent 31.6%);
  mask-image: radial-gradient(circle, black 0 55%, transparent 76%);
}

.process-field::before,
.process-field::after {
  position: absolute;
  inset: 50% auto auto 50%;
  width: 64%;
  height: 1px;
  content: "";
  background: linear-gradient(90deg, transparent, var(--cyan), transparent);
  transform-origin: left center;
}

.process-field::before {
  transform: rotate(31deg);
}

.process-field::after {
  transform: rotate(-28deg);
}

.process-field span {
  position: absolute;
  width: 0.62rem;
  height: 0.62rem;
  border-radius: 50%;
  background: var(--violet);
  box-shadow: 0 0 1.5rem currentColor;
}

.process-field span:nth-child(1) { left: 19%; top: 28%; }
.process-field span:nth-child(2) { right: 18%; top: 23%; color: var(--coral); background: var(--coral); }
.process-field span:nth-child(3) { right: 12%; bottom: 25%; color: var(--cyan); background: var(--cyan); }
.process-field span:nth-child(4) { left: 27%; bottom: 19%; color: var(--acid); background: var(--acid); }
.process-field span:nth-child(5) { left: 49%; top: 48%; color: var(--ink); background: var(--ink); }

.process-field i {
  position: absolute;
  inset: 43%;
  border: 1px solid var(--cyan);
  border-radius: 50%;
  box-shadow: 0 0 5rem rgb(121 231 255 / 24%);
}

.process-copy article {
  display: grid;
  min-height: 80vh;
  align-content: center;
  opacity: 0.38;
  transition: opacity var(--motion-major) ease;
}

.process-copy article:first-child {
  opacity: 1;
}

.process-copy article[data-active="true"] {
  opacity: 1;
}

.process-copy p {
  margin-bottom: 1.3rem;
  color: var(--cyan);
  font-size: clamp(1rem, 2vw, 1.8rem);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.08em;
}

.process-copy h2,
.scene-context h2,
.scene-reset h2 {
  max-width: 12ch;
  margin: 0;
  font-size: clamp(3rem, 6vw, 6.5rem);
  font-weight: 520;
  line-height: 0.95;
  letter-spacing: -0.065em;
}

.scene-context h2,
.scene-reset h2 {
  color: var(--acid);
  font-family: Georgia, "Times New Roman", serif;
  font-style: italic;
  font-weight: 400;
}

.scene-context h2::first-line,
.scene-reset h2::first-line {
  color: var(--ink);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-style: normal;
  font-weight: 520;
}

.scene-context {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(26rem, 1.1fr);
  gap: clamp(4rem, 10vw, 12rem);
  align-items: center;
}

.context-control {
  display: inline-flex;
  width: min(100%, 32rem);
  margin-top: 3rem;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 999px;
}

.context-control button {
  flex: 1 1 0;
  padding: 0.9rem 1.1rem;
  border-right: 1px solid var(--line);
  color: var(--muted);
  background: transparent;
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  cursor: pointer;
}

.context-control button:last-child {
  border-right: 0;
}

.context-control button[aria-pressed="true"] {
  color: var(--cyan);
  background: rgb(121 231 255 / 8%);
  box-shadow: inset 0 0 0 1px var(--cyan);
}

.context-result {
  position: relative;
}

.context-field {
  position: relative;
  height: clamp(12rem, 24vh, 16rem);
  margin-bottom: clamp(2rem, 5vh, 4rem);
  background:
    radial-gradient(circle at center, rgb(121 231 255 / 13%), transparent 8rem),
    radial-gradient(circle, rgb(121 231 255 / 30%) 0 1px, transparent 1.5px) 50% 50% / 1.1rem 1.1rem;
  mask-image: radial-gradient(ellipse, black 0 48%, transparent 78%);
}

.context-field::before,
.context-field::after {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 72%;
  height: 1px;
  content: "";
  background: linear-gradient(90deg, transparent, rgb(121 231 255 / 48%), transparent);
  transform-origin: center;
}

.context-field::before {
  transform: translate(-50%, -50%) rotate(22deg);
}

.context-field::after {
  transform: translate(-50%, -50%) rotate(-31deg);
}

.context-field span {
  position: absolute;
  width: 0.6rem;
  height: 0.6rem;
  border-radius: 50%;
  background: var(--violet);
  box-shadow: 0 0 1.4rem currentColor;
}

.context-field span:nth-child(1) { left: 15%; top: 27%; }
.context-field span:nth-child(2) { right: 14%; top: 18%; color: var(--coral); background: var(--coral); }
.context-field span:nth-child(3) { right: 10%; bottom: 18%; color: var(--cyan); background: var(--cyan); }
.context-field span:nth-child(4) { left: 25%; bottom: 12%; color: var(--acid); background: var(--acid); }
.context-field span:nth-child(5) { left: 49%; top: 46%; color: var(--ink); background: var(--ink); }

.context-field i {
  position: absolute;
  inset: 40%;
  border: 1px solid var(--cyan);
  border-radius: 50%;
  box-shadow: 0 0 4rem rgb(121 231 255 / 30%);
}

.context-result::before {
  position: absolute;
  z-index: -1;
  top: 50%;
  left: 48%;
  width: min(32rem, 80vw);
  aspect-ratio: 1;
  content: "";
  border-radius: 50%;
  background: radial-gradient(circle, rgb(121 231 255 / 11%), transparent 67%);
  transform: translate(-50%, -50%);
}

.context-ranking {
  padding: 0;
  margin: 0;
  list-style: none;
  counter-reset: result;
  border-top: 1px solid var(--line);
}

.context-ranking li {
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-size: clamp(1.05rem, 2.2vw, 1.7rem);
  letter-spacing: -0.025em;
}

.context-ranking li:first-child {
  color: var(--ink);
  font-size: clamp(1.55rem, 3vw, 2.7rem);
}

.scene-reset {
  display: grid;
  grid-template-columns: minmax(20rem, 0.7fr) minmax(26rem, 1.3fr);
  gap: clamp(3rem, 10vw, 12rem);
  align-items: center;
}

.reset-field {
  position: relative;
  min-height: 32rem;
}

.reset-field::before,
.reset-field::after {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 72%;
  height: 1px;
  content: "";
  background: linear-gradient(90deg, transparent, rgb(121 231 255 / 45%), transparent);
}

.reset-field::before {
  transform: translate(-50%, -50%) rotate(25deg);
}

.reset-field::after {
  transform: translate(-50%, -50%) rotate(-36deg);
}

.reset-field span {
  position: absolute;
  display: grid;
  width: 5rem;
  aspect-ratio: 1;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  font-size: 0.65rem;
  letter-spacing: 0.08em;
}

.reset-field span:nth-child(1) { left: 46%; top: 2%; color: var(--violet); }
.reset-field span:nth-child(2) { left: 6%; top: 35%; color: var(--cyan); }
.reset-field span:nth-child(3) { right: 4%; top: 33%; color: var(--coral); }
.reset-field span:nth-child(4) { left: 21%; bottom: 3%; color: var(--acid); }
.reset-field span:nth-child(5) { right: 18%; bottom: 2%; color: var(--ink); }

.reset-field i {
  position: absolute;
  inset: 47%;
  border-radius: 50%;
  background: var(--ink);
  box-shadow:
    0 0 4rem var(--cyan),
    0 0 7rem var(--violet);
}

.site-footer {
  display: flex;
  min-height: 12rem;
  align-items: flex-end;
  justify-content: space-between;
  gap: 2rem;
  padding: 3rem var(--page-x);
  color: var(--muted);
  font-size: 0.75rem;
}

.site-footer strong {
  color: var(--ink);
  letter-spacing: 0.18em;
}

@media (max-width: 980px) {
  .scene-taste,
  .scene-process,
  .scene-context,
  .scene-reset {
    grid-template-columns: 1fr;
  }

  .process-field {
    position: relative;
    top: auto;
    height: 32rem;
  }

  .process-copy article {
    min-height: 70svh;
  }
}

@media (max-width: 700px) {
  :root {
    --page-x: 1.25rem;
    --display: clamp(3.35rem, 16vw, 5.4rem);
  }

  .site-header {
    min-height: 4.5rem;
  }

  .scene {
    min-height: auto;
    padding-block: 5rem;
  }

  .scene-taste {
    padding-top: 3.5rem;
    gap: 2.5rem;
  }

  .field-stage {
    min-height: 34rem;
  }

  .signal-controls button {
    min-width: 3.75rem;
    min-height: 3.75rem;
    width: 3.75rem;
    font-size: 0.56rem;
  }

  .result {
    right: 0;
    bottom: -1rem;
    width: 78%;
  }

  .process-field {
    height: 26rem;
  }

  .process-copy article {
    min-height: 62svh;
  }

  .context-control {
    display: grid;
    width: 100%;
    grid-template-columns: repeat(3, 1fr);
  }

  .context-control button {
    padding-inline: 0.35rem;
    font-size: 0.65rem;
  }

  .context-result {
    padding-top: 1rem;
  }

  .reset-field {
    min-height: 25rem;
  }

  .reset-field span {
    width: 4rem;
    font-size: 0.55rem;
  }

  .site-footer {
    min-height: 10rem;
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .process-field {
    position: relative;
    top: auto;
  }
}