/* ==========================================================================
   cyngames.com — site.css
   Zero-framework, layered CSS. Modern features are progressive enhancements:
   scroll-driven animations, cross-document view transitions, scroll-state
   container queries, anchor positioning, corner-shape, contrast-color(),
   @starting-style, interpolate-size, text-box-trim, linear() easing.
   ========================================================================== */

@layer reset, tokens, base, layout, components, motion;

/* ---------- fonts (self-hosted, variable) ---------- */
@font-face {
  font-family: "Bricolage Grotesque";
  src: url("../fonts/bricolage-grotesque-var.woff2") format("woff2-variations"),
       url("../fonts/bricolage-grotesque-var.woff2") format("woff2");
  font-weight: 200 800;
  font-display: block; /* preloaded; avoid a fallback flash on the headline */
}
@font-face {
  font-family: "Instrument Sans";
  src: url("../fonts/instrument-sans-var.woff2") format("woff2-variations"),
       url("../fonts/instrument-sans-var.woff2") format("woff2");
  font-weight: 400 700;
  font-display: swap;
}
@font-face {
  font-family: "JetBrains Mono";
  src: url("../fonts/jetbrains-mono-var.woff2") format("woff2-variations"),
       url("../fonts/jetbrains-mono-var.woff2") format("woff2");
  font-weight: 100 800;
  font-display: swap;
}
/* metric-matched fallbacks keep layout stable while webfonts load */
@font-face {
  font-family: "Bricolage Fallback";
  src: local("Arial Black"), local("Arial-BoldMT"), local("Helvetica-Bold");
  size-adjust: 96%;
  ascent-override: 92%;
  descent-override: 22%;
}
@font-face {
  font-family: "Instrument Fallback";
  src: local("Arial"), local("Helvetica Neue"), local("Helvetica");
  size-adjust: 98%;
}

/* ---------- reset ---------- */
@layer reset {
  *, *::before, *::after { box-sizing: border-box; }
  * { margin: 0; }
  html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
  body { min-height: 100svh; line-height: 1.5; -webkit-font-smoothing: antialiased; }
  img, svg, video, canvas { display: block; max-width: 100%; }
  button, input { font: inherit; color: inherit; }
  button { background: none; border: 0; padding: 0; cursor: pointer; }
  a { color: inherit; }
  ul[role="list"], ol[role="list"] { list-style: none; padding: 0; }
  h1, h2, h3, h4 { font-weight: inherit; font-size: inherit; overflow-wrap: anywhere; }
}

/* ---------- tokens ---------- */
@layer tokens {
  :root {
    color-scheme: dark;

    /* material palette — ultramarine night pit, chalk, glass */
    --c-canvas:       oklch(30% 0.135 272);
    --c-canvas-deep:  oklch(24% 0.12 272);
    --c-canvas-raise: oklch(36% 0.14 272);
    --c-line:         oklch(from var(--c-canvas) calc(l + 0.16) c h / 0.55);
    --c-chalk:        oklch(96% 0.018 88);
    --c-chalk-dim:    oklch(80% 0.035 270);
    --c-chalk-mute:   oklch(68% 0.045 270);
    --c-tangerine:    oklch(74% 0.16 52);
    --c-tangerine-hi: oklch(80% 0.15 60);
    --c-mint:         oklch(86% 0.11 165);
    --c-ruby:         oklch(62% 0.21 20);
    --c-void:         oklch(14% 0.03 285);
    --c-void-raise:   oklch(20% 0.035 285);
    --c-earth:        oklch(80% 0.075 72);
    --c-earth-deep:   oklch(66% 0.09 65);
    --c-earth-ink:    oklch(28% 0.06 60);
    --c-chalk-line:   oklch(97% 0.01 90);

    /* type */
    --f-display: "Bricolage Grotesque", "Bricolage Fallback", system-ui, sans-serif;
    --f-body: "Instrument Sans", "Instrument Fallback", system-ui, sans-serif;
    --f-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;

    --t--1: clamp(0.8125rem, 0.78rem + 0.15vw, 0.875rem);
    --t-0:  clamp(1rem, 0.96rem + 0.25vw, 1.0625rem);
    --t-1:  clamp(1.125rem, 1.05rem + 0.4vw, 1.3125rem);
    --t-2:  clamp(1.5rem, 1.25rem + 1.1vw, 2.125rem);
    --t-3:  clamp(2.25rem, 1.6rem + 2.6vw, 3.75rem);
    --t-hero: clamp(3.35rem, 1rem + 9.4vw, 8.75rem);
    --t-page: clamp(3rem, 1.2rem + 7vw, 7rem);

    /* rhythm */
    --gutter: clamp(1.25rem, 4vw, 3.5rem);
    --wrap: 84rem;
    --section: clamp(5rem, 10vw, 9rem);
    --radius: 1.75rem;
    --radius-s: 0.85rem;

    /* motion */
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-spring: linear(
      0, 0.009, 0.035 2.1%, 0.141, 0.281 6.7%, 0.723 12.9%, 0.938 16.7%, 1.017,
      1.077, 1.121, 1.149 24.3%, 1.159, 1.163, 1.161, 1.154 29.9%, 1.129 32.8%,
      1.051 39.6%, 1.017 43.1%, 0.991, 0.977 51%, 0.974 53.8%, 0.975 57.1%,
      0.997 69.8%, 1.003 76.9%, 1.004 83.8%, 1
    );
    --dur-fast: 160ms;
    --dur: 320ms;
    --dur-slow: 640ms;
  }

  @property --p { syntax: "<number>"; inherits: true; initial-value: 0; }
  @property --ring-angle { syntax: "<angle>"; inherits: false; initial-value: 0deg; }
}

/* ---------- base ---------- */
@layer base {
  html {
    background: var(--c-canvas);
    color: var(--c-chalk);
    font-family: var(--f-body);
    font-size: 100%;
    scroll-behavior: smooth;
    scrollbar-color: var(--c-canvas-raise) var(--c-canvas-deep);
    accent-color: var(--c-tangerine);
  }
  body {
    font-size: var(--t-0);
    font-weight: 400;
    overflow-x: clip;
    text-rendering: optimizeLegibility;
  }
  ::selection { background: var(--c-tangerine); color: var(--c-void); }

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

  p { text-wrap: pretty; max-width: 62ch; }
  h1, h2, h3 { text-wrap: balance; }
  a { text-decoration-thickness: from-font; text-underline-offset: 0.15em; }
  [id] { scroll-margin-block-start: 5.5rem; }

  .display {
    font-family: var(--f-display);
    font-variation-settings: "opsz" 96;
    font-weight: 760;
    letter-spacing: -0.035em;
    line-height: 0.92;
  }
  .mono {
    font-family: var(--f-mono);
    font-size: var(--t--1);
    font-weight: 450;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    font-variant-numeric: tabular-nums;
  }
  .eyebrow {
    font-family: var(--f-mono);
    font-size: var(--t--1);
    font-weight: 450;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--c-chalk-mute);
    display: flex;
    align-items: start;
    gap: 0.75em;
  }
  .eyebrow::before {
    content: "";
    flex: none;
    inline-size: 0.55em;
    block-size: 0.55em;
    margin-block-start: 0.5em;
    border-radius: 50%;
    background: currentColor;
    opacity: 0.7;
  }
  .visually-hidden {
    position: absolute !important;
    width: 1px; height: 1px; padding: 0; margin: -1px;
    overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0;
  }
  .skip {
    position: fixed; inset-inline-start: 1rem; inset-block-start: 1rem; z-index: 100;
    background: var(--c-chalk); color: var(--c-canvas-deep);
    padding: 0.6rem 1rem; border-radius: var(--radius-s);
    transform: translateY(-200%);
    transition: transform var(--dur-fast) var(--ease-out);
  }
  .skip:focus-visible { transform: none; }
}

/* ---------- layout ---------- */
@layer layout {
  .wrap {
    inline-size: min(100% - 2 * var(--gutter), var(--wrap));
    margin-inline: auto;
  }
  .section { padding-block: var(--section); }
  .section--tight { padding-block: calc(var(--section) * 0.6); }
  .section__head {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 2rem;
    margin-block-end: clamp(2rem, 4vw, 3.5rem);
  }
  .section__head h2 { font-size: var(--t-3); }

  @container (width < 40rem) {
    .section__head { flex-direction: column; align-items: start; gap: 0.75rem; }
  }
  main { container-type: inline-size; }
}

/* ==========================================================================
   components
   ========================================================================== */
@layer components {

  /* ---------- buttons ---------- */
  .btn {
    --btn-bg: var(--c-tangerine);
    --btn-fg: var(--c-void);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.6em;
    min-block-size: 3.1rem;
    padding: 0.8em 1.45em;
    border-radius: 999px;
    background: var(--btn-bg);
    color: var(--btn-fg);
    font-family: var(--f-body);
    font-weight: 600;
    font-size: var(--t-0);
    letter-spacing: -0.005em;
    text-decoration: none;
    white-space: nowrap;
    transition:
      transform var(--dur) var(--ease-spring),
      background-color var(--dur-fast) ease,
      color var(--dur-fast) ease,
      box-shadow var(--dur-fast) ease;
  }
  @supports (color: contrast-color(red)) {
    .btn { --btn-fg: contrast-color(var(--btn-bg)); }
  }
  .btn:hover { transform: translateY(-2px) scale(1.02); background: var(--c-tangerine-hi); }
  .btn:active { transform: translateY(0) scale(0.98); transition-duration: 80ms; }
  .btn--ghost {
    --btn-bg: transparent;
    --btn-fg: var(--c-chalk);
    box-shadow: inset 0 0 0 1.5px oklch(from var(--c-chalk) l c h / 0.45);
  }
  .btn--ghost:hover { background: oklch(from var(--c-chalk) l c h / 0.08); box-shadow: inset 0 0 0 1.5px var(--c-chalk); }
  .btn--dark { --btn-bg: var(--c-void); --btn-fg: var(--c-chalk); }
  .btn--dark:hover { background: var(--c-void-raise); }
  .btn--earth { --btn-bg: var(--c-earth-ink); --btn-fg: var(--c-chalk-line); }
  .btn--earth:hover { background: oklch(from var(--c-earth-ink) calc(l + 0.06) c h); }
  .btn svg { inline-size: 1.05em; block-size: 1.05em; }
  .btn--play svg { transition: transform var(--dur) var(--ease-spring); }
  .btn--play:hover svg { transform: translateX(3px); }

  /* ---------- header / nav ---------- */
  .site-head {
    position: sticky;
    inset-block-start: 0;
    z-index: 50;
    container-type: scroll-state;
  }
  .site-head__bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    block-size: 4.5rem;
    transition: background-color var(--dur) ease, box-shadow var(--dur) ease, backdrop-filter var(--dur) ease;
  }
  @container scroll-state(stuck: top) {
    .site-head__bar {
      background: oklch(from var(--c-canvas) l c h / 0.72);
      -webkit-backdrop-filter: blur(14px) saturate(1.2);
      backdrop-filter: blur(14px) saturate(1.2);
      box-shadow: 0 1px 0 var(--c-line);
    }
  }
  .site-head__bar .wrap { display: contents; }

  .brand {
    display: inline-flex;
    align-items: center;
    gap: 0.55em;
    text-decoration: none;
    font-family: var(--f-display);
    font-variation-settings: "opsz" 48;
    font-size: 1.4rem;
    letter-spacing: -0.035em;
    line-height: 1;
    padding-inline: var(--gutter);
    --brand-in: var(--c-tangerine);
  }
  .brand__word { display: inline-block; translate: 0 -0.04em; }
  .brand__cyn { font-weight: 760; }
  .brand__games { font-weight: 500; }
  .brand__mark { inline-size: 1.45em; block-size: 1.45em; flex: none; overflow: visible; }
  .m-in { fill: var(--brand-in, var(--c-tangerine)); transition: fill var(--dur-slow) var(--ease-out); }
  .brand:hover .m-in { fill: currentColor; } /* the incoming marble is absorbed */
  .brand__mark .m-small { transition: transform var(--dur) var(--ease-spring); transform-origin: center; }

  .site-nav {
    display: flex;
    align-items: center;
    gap: clamp(1rem, 2vw, 2rem);
    padding-inline: var(--gutter);
    margin-inline-start: auto;
  }
  .site-nav a:not(.btn) {
    text-decoration: none;
    font-weight: 500;
    color: var(--c-chalk-dim);
    padding-block: 0.4rem;
    position: relative;
  }
  .site-nav a:not(.btn)::after {
    content: "";
    position: absolute;
    inset-inline: 0;
    inset-block-end: 0.1rem;
    block-size: 2px;
    border-radius: 2px;
    background: var(--c-tangerine);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--dur) var(--ease-out);
  }
  .site-nav a:not(.btn):hover, .site-nav a:not(.btn)[aria-current="page"] { color: var(--c-chalk); }
  .site-nav a:not(.btn):hover::after, .site-nav a:not(.btn)[aria-current="page"]::after { transform: scaleX(1); }
  .site-nav .btn { min-block-size: 2.6rem; padding-block: 0.5em; font-size: var(--t--1); }

  .menu-btn {
    display: none;
    inline-size: 2.75rem;
    block-size: 2.75rem;
    border-radius: 50%;
    align-items: center;
    justify-content: center;
    color: var(--c-chalk);
    anchor-name: --menu-btn;
  }
  .menu-btn svg { inline-size: 1.4rem; block-size: 1.4rem; }

  /* mobile menu: native popover + anchor positioning */
  .menu {
    inset: auto;
    margin: 0;
    border: 1px solid var(--c-line);
    border-radius: var(--radius-s);
    background: var(--c-canvas-deep);
    color: var(--c-chalk);
    padding: 0.5rem;
    min-inline-size: 14rem;
    box-shadow: 0 24px 60px -20px oklch(0% 0 0 / 0.6);
    /* fallback position (no anchor support): top-right of viewport */
    position: fixed;
    inset-block-start: 4.75rem;
    inset-inline-end: var(--gutter);
  }
  @supports (anchor-name: --x) {
    .menu {
      position-anchor: --menu-btn;
      inset-block-start: calc(anchor(bottom) + 0.5rem);
      inset-inline-end: anchor(right);
    }
  }
  .menu a {
    display: block;
    padding: 0.8rem 1rem;
    border-radius: calc(var(--radius-s) - 0.25rem);
    text-decoration: none;
    font-weight: 500;
  }
  .menu a:hover { background: var(--c-canvas); }
  .menu .btn { margin-block-start: 0.35rem; inline-size: 100%; }
  .menu::backdrop { background: transparent; }

  @media (width < 52rem) {
    .site-nav { display: none; }
    .menu-btn { display: inline-flex; margin-inline: auto var(--gutter); }
  }

  /* ---------- hero ---------- */
  .hero-track {
    block-size: 185svh;
    position: relative;
    margin-block-start: -4.5rem; /* sit under the sticky header */
  }
  .hero {
    position: sticky;
    inset-block-start: 0;
    block-size: 100svh;
    overflow: clip;
    display: grid;
    align-items: end;
    isolation: isolate;
  }
  .hero__field {
    position: absolute;
    inset: 0;
    z-index: 0;
    touch-action: pan-y;
    cursor: crosshair;
  }
  .hero__field canvas { inline-size: 100%; block-size: 100%; }
  .hero__content {
    position: relative;
    z-index: 1;
    padding-block-end: clamp(1.75rem, 4.5vh, 3.5rem);
    pointer-events: none;
  }
  .hero__content > * { pointer-events: auto; }
  .hero__title {
    font-size: var(--t-hero);
    text-transform: uppercase;
    margin-inline-start: -0.05em;
    max-inline-size: 9em;
    text-box-trim: trim-both;
    text-box-edge: cap alphabetic;
  }
  .hero__title .w { display: inline-block; }
  .hero__lede {
    margin-block-start: clamp(1.25rem, 2.6vw, 2rem);
    font-size: var(--t-1);
    max-inline-size: 34ch;
    color: var(--c-chalk-dim);
    line-height: 1.4;
  }
  .hero__lede b { color: var(--c-chalk); font-weight: 600; }
  .hero__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-block-start: clamp(1.25rem, 2.6vw, 2rem);
  }
  .hero__hint {
    position: absolute;
    inset-inline-end: var(--gutter);
    inset-block-end: clamp(1.75rem, 4.5vh, 3.5rem);
    color: var(--c-chalk-mute);
    display: flex;
    align-items: center;
    gap: 0.6rem;
  }
  .hero__hint svg { inline-size: 1rem; block-size: 1rem; }
  .hero__hint .hint-coarse { display: none; }
  @media (pointer: coarse) {
    .hero__hint .hint-fine { display: none; }
    .hero__hint .hint-coarse { display: inline; }
  }
  @media (width < 52rem) {
    .hero__hint { display: none; }
    .hero-track { block-size: 170svh; }
    .hero__actions .btn { flex: 1 1 12rem; }
  }

  /* the games section slides over the collapsed orb instead of waiting for the hero to scroll away */
  .section--over { position: relative; z-index: 2; background: var(--c-canvas); margin-block-start: -34svh; border-start-start-radius: var(--radius); border-start-end-radius: var(--radius); }
  @media (prefers-reduced-motion: reduce) { .section--over { margin-block-start: 0; } }

  /* ---------- games grid ---------- */
  .games { display: grid; gap: clamp(1rem, 2vw, 1.5rem); grid-template-columns: repeat(auto-fit, minmax(min(100%, 24rem), 1fr)); }
  .game {
    position: relative;
    display: grid;
    grid-template-rows: auto 1fr;
    border-radius: var(--radius);
    corner-shape: squircle;
    overflow: clip;
    text-decoration: none;
    color: var(--game-fg, var(--c-chalk));
    background: var(--game-bg);
    box-shadow: 0 0 0 1px oklch(from var(--c-chalk) l c h / 0.06) inset;
    transition: transform var(--dur-slow) var(--ease-spring), box-shadow var(--dur) ease;
    container-type: inline-size;
  }
  .game:hover { transform: translateY(-4px); }
  .game:focus-visible { outline-offset: 4px; }
  .game--singularity { --game-bg: var(--c-void); --game-fg: var(--c-chalk); --game-mute: var(--c-chalk-mute); }
  .game--kancha { --game-bg: var(--c-earth); --game-fg: var(--c-earth-ink); --game-mute: oklch(from var(--c-earth-ink) l c h / 0.72); }

  .game__art { aspect-ratio: 3 / 2; inline-size: 100%; overflow: clip; }
  .game__art svg { inline-size: 100%; block-size: 100%; }
  .game__body { padding: clamp(1.25rem, 3cqi, 2rem) clamp(1.25rem, 3cqi, 2rem) clamp(1.5rem, 3cqi, 2.25rem); display: grid; gap: 0.9rem; align-content: start; }
  .game .eyebrow { color: var(--game-mute); }
  .game__title { font-size: clamp(2rem, 7cqi, 3.25rem); line-height: 0.95; text-transform: uppercase; }
  .game__title a { text-decoration: none; color: inherit; }
  .game__title a::after { content: ""; position: absolute; inset: 0; } /* whole card is the link */
  .game__cta { position: relative; z-index: 1; }
  .game__hook { color: var(--game-fg); opacity: 0.82; max-inline-size: 40ch; }
  .game__meta { display: flex; flex-wrap: wrap; gap: 0.5rem 1.25rem; color: var(--game-mute); margin-block-start: 0.2rem; }
  .game__cta { display: flex; align-items: center; gap: 1rem; margin-block-start: 0.6rem; }
  .game__cta .btn { min-block-size: 2.8rem; }
  .game__cta .link { color: var(--game-mute); font-weight: 500; text-decoration: none; }
  .game__cta .link:hover { color: var(--game-fg); }
  .game .btn:focus-visible { outline-color: var(--game-fg); }
  .game--kancha .btn:focus-visible { outline-color: var(--c-earth-ink); }

  /* ---------- art: shared ---------- */
  .art { --art-dur: 1.1s; }
  .art .orb-hi { mix-blend-mode: screen; }

  /* ---------- statement ---------- */
  .statement { display: grid; gap: clamp(2rem, 5vw, 4rem); grid-template-columns: 1fr; align-items: start; }
  .statement__text { font-size: clamp(1.75rem, 1.1rem + 2.4vw, 3.1rem); line-height: 1.2; font-weight: 500; letter-spacing: -0.01em; max-inline-size: 24ch; text-wrap: balance; }
  .statement__text .line { display: block; }
  .statement__text em { font-style: normal; color: var(--c-tangerine); }
  .statement__facts { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(12rem, 1fr)); }
  .fact { padding: 1.25rem 1.35rem; border-radius: var(--radius-s); corner-shape: squircle; background: var(--c-canvas-deep); display: grid; gap: 0.35rem; }
  .fact__k { color: var(--c-chalk-mute); }
  .fact__v { font-weight: 600; font-size: var(--t-1); }
  @media (width >= 64rem) { .statement { grid-template-columns: 1.2fr 1fr; } }

  /* ---------- rolling strip ---------- */
  .rolling { display: grid; gap: 1.5rem; grid-template-columns: auto 1fr; align-items: center; border-block: 1px solid var(--c-line); padding-block: clamp(1.75rem, 3vw, 2.5rem); }
  .rolling__slots { display: flex; gap: 0.75rem; align-items: center; }
  .slot { inline-size: clamp(2rem, 4vw, 3rem); aspect-ratio: 1; border-radius: 50%; border: 1.5px dashed oklch(from var(--c-chalk) l c h / 0.35); }
  .slot--live { border-style: solid; border-color: transparent; background: var(--c-tangerine); }
  .slot--live:nth-child(2) { background: var(--c-mint); }
  .rolling__text { display: grid; gap: 0.15rem; }
  .rolling__text strong { font-weight: 600; }
  .rolling__text span { color: var(--c-chalk-mute); }
  @media (width < 40rem) { .rolling { grid-template-columns: 1fr; } }

  /* ---------- footer ---------- */
  .site-foot { padding-block: clamp(3rem, 6vw, 5rem) 2rem; color: var(--c-chalk-dim); }
  .site-foot__grid { display: grid; gap: 2rem; grid-template-columns: 1fr; }
  .site-foot nav { display: flex; flex-wrap: wrap; gap: 0.75rem 1.5rem; }
  .site-foot a { text-decoration: none; }
  .site-foot a:hover { color: var(--c-chalk); text-decoration: underline; }
  .site-foot__meta { max-width: none; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1rem; margin-block-start: 2.5rem; padding-block-start: 1.5rem; border-block-start: 1px solid var(--c-line); color: var(--c-chalk-mute); }
  .site-foot .brand { padding: 0; }
  @media (width >= 48rem) { .site-foot__grid { grid-template-columns: 1fr auto; align-items: start; } }

  /* ---------- game detail page ---------- */
  .page .section { padding-block: calc(var(--section) * 0.62); }
  .ghero { display: grid; gap: clamp(1.5rem, 3vw, 2.5rem); padding-block: 1.5rem clamp(3rem, 7vw, 6rem); }
  .ghero__art { border-radius: var(--radius); corner-shape: squircle; overflow: clip; aspect-ratio: 3 / 2; background: var(--game-bg); }
  .ghero__art svg { inline-size: 100%; block-size: 100%; }
  .ghero__body { display: grid; gap: 1.25rem; align-content: center; }
  .ghero__title { font-size: var(--t-page); line-height: 0.92; text-transform: uppercase; margin-inline-start: -0.04em; }
  .ghero__hook { font-size: var(--t-1); color: var(--c-chalk-dim); max-inline-size: 42ch; }
  .ghero__actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-block-start: 0.5rem; }
  .ghero__meta { display: flex; flex-wrap: wrap; gap: 0.5rem 1.25rem; color: var(--c-chalk-mute); }
  @media (width >= 64rem) { .ghero { grid-template-columns: 1.1fr 1fr; align-items: center; padding-block-start: 2.5rem; } }
  @media (width < 64rem) { .ghero__art { aspect-ratio: 16 / 10; } }

  .page--singularity .ghero__art { --game-bg: var(--c-void); }
  .page--kancha .ghero__art { --game-bg: var(--c-earth); }

  .steps { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(min(100%, 16rem), 1fr)); counter-reset: step; }
  .step { padding: 1.5rem; border-radius: var(--radius-s); corner-shape: squircle; background: var(--c-canvas-deep); display: grid; gap: 0.6rem; align-content: start; counter-increment: step; }
  .step::before { content: counter(step, decimal-leading-zero); font-family: var(--f-mono); color: var(--c-tangerine); letter-spacing: 0.08em; }
  .step h3 { font-family: var(--f-display); font-variation-settings: "opsz" 40; font-weight: 700; font-size: var(--t-2); letter-spacing: -0.02em; line-height: 1; }
  .step p { color: var(--c-chalk-dim); }

  .specs { display: grid; gap: 0; border-block-start: 1px solid var(--c-line); }
  .specs > div { display: grid; grid-template-columns: minmax(8rem, 14rem) 1fr; gap: 1rem; padding-block: 0.9rem; border-block-end: 1px solid var(--c-line); }
  .specs dt { color: var(--c-chalk-mute); }
  .specs dd { margin: 0; }
  @media (width < 40rem) { .specs > div { grid-template-columns: 1fr; gap: 0.3rem; } }

  .tiers { display: flex; flex-wrap: wrap; gap: 0.5rem; align-items: center; }
  .tier { display: inline-flex; align-items: center; gap: 0.5rem; padding: 0.45rem 0.8rem; border-radius: 999px; background: var(--c-canvas-deep); color: var(--c-chalk-dim); }
  .tier i { inline-size: 0.6rem; block-size: 0.6rem; border-radius: 50%; background: var(--tier-c, var(--c-mint)); flex: none; }
  .tiers .arrow { color: var(--c-chalk-mute); }

  .faq details { border-block-start: 1px solid var(--c-line); }
  .faq details:last-child { border-block-end: 1px solid var(--c-line); }
  .faq summary { list-style: none; cursor: pointer; display: flex; justify-content: space-between; align-items: center; gap: 1rem; padding-block: 1.1rem; font-weight: 600; font-size: var(--t-1); }
  .faq summary::-webkit-details-marker { display: none; }
  .faq summary::after { content: "+"; font-family: var(--f-mono); font-size: 1.3rem; color: var(--c-tangerine); transition: transform var(--dur) var(--ease-spring); }
  .faq details[open] summary::after { transform: rotate(45deg); }
  .faq ::details-content { color: var(--c-chalk-dim); block-size: 0; overflow: clip; transition: block-size var(--dur) var(--ease-out), content-visibility var(--dur) allow-discrete; }
  .faq details[open]::details-content { block-size: auto; padding-block-end: 1.25rem; }
  .faq p { max-width: 70ch; }
  @supports (interpolate-size: allow-keywords) { .faq { interpolate-size: allow-keywords; } }

  .next-game { display: grid; gap: 1rem; padding: clamp(1.5rem, 4vw, 3rem); border-radius: var(--radius); corner-shape: squircle; background: var(--next-bg, var(--c-canvas-deep)); color: var(--next-fg, var(--c-chalk)); text-decoration: none; grid-template-columns: 1fr auto; align-items: center; }
  .next-game .eyebrow { color: oklch(from var(--next-fg, var(--c-chalk)) l c h / 0.7); }
  .next-game strong { font-family: var(--f-display); font-variation-settings: "opsz" 96; font-weight: 740; font-size: var(--t-3); letter-spacing: -0.03em; line-height: 1; display: block; margin-block-start: 0.5rem; text-transform: uppercase; }
  .next-game svg { inline-size: 2.5rem; block-size: 2.5rem; transition: transform var(--dur) var(--ease-spring); }
  .next-game:hover svg { transform: translateX(6px); }

  .crumb { display: inline-flex; align-items: center; gap: 0.5rem; color: var(--c-chalk-mute); text-decoration: none; margin-block-end: 1.5rem; }
  .crumb:hover { color: var(--c-chalk); }
  .crumb svg { inline-size: 1rem; block-size: 1rem; }

  /* ---------- brand page ---------- */
  .swatches { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(9rem, 1fr)); }
  .swatch { display: grid; gap: 0.5rem; }
  .swatch i { display: block; aspect-ratio: 4 / 3; border-radius: var(--radius-s); corner-shape: squircle; background: var(--sw); box-shadow: inset 0 0 0 1px oklch(from var(--c-chalk) l c h / 0.08); }
  .swatch b { font-weight: 600; }
  .swatch span { color: var(--c-chalk-mute); }
  .logo-grid { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(min(100%, 18rem), 1fr)); }
  .logo-card { display: grid; gap: 0.75rem; align-content: start; }
  .logo-card figure { margin: 0; display: grid; place-items: center; min-block-size: 12rem; padding: 2rem; border-radius: var(--radius-s); corner-shape: squircle; background: var(--lc-bg, var(--c-canvas-deep)); color: var(--lc-fg, var(--c-chalk)); }
  .logo-card figure img, .logo-card figure svg { inline-size: auto; max-inline-size: 100%; block-size: var(--lc-h, 3.5rem); }
  .logo-card figcaption { display: flex; justify-content: space-between; gap: 1rem; align-items: center; color: var(--c-chalk-dim); }
  .logo-card a { color: var(--c-tangerine); text-decoration: none; font-weight: 500; }
  .logo-card a:hover { text-decoration: underline; }
  .type-sample { display: grid; gap: 0.35rem; padding: 1.5rem; border-radius: var(--radius-s); corner-shape: squircle; background: var(--c-canvas-deep); }
  .type-sample .mono { color: var(--c-chalk-mute); }
  .sizes { display: flex; gap: 2rem; align-items: end; flex-wrap: wrap; }
  .sizes svg { display: block; }
  .sizes div { display: grid; gap: 0.6rem; justify-items: center; color: var(--c-chalk); }
  .sizes .mono { color: var(--c-chalk-mute); }

  /* ---------- play placeholder ---------- */
  .placeholder { min-block-size: 100svh; display: grid; place-items: center; text-align: center; padding: var(--gutter); }
  .placeholder code { font-family: var(--f-mono); background: var(--c-canvas-deep); padding: 0.2em 0.5em; border-radius: 0.4em; }
}

/* ==========================================================================
   motion
   ========================================================================== */
@layer motion {

  /* cross-document view transitions (MPA) */
  @view-transition { navigation: auto; }

  ::view-transition-group(*) { animation-duration: 520ms; animation-timing-function: var(--ease-out); }
  ::view-transition-old(root) { animation: 220ms ease-out both vt-out; }
  ::view-transition-new(root) { animation: 360ms 80ms ease-out both vt-in; }
  ::view-transition-old(art-singularity), ::view-transition-old(art-kancha),
  ::view-transition-old(title-singularity), ::view-transition-old(title-kancha) { animation: none; mix-blend-mode: normal; }
  ::view-transition-new(art-singularity), ::view-transition-new(art-kancha),
  ::view-transition-new(title-singularity), ::view-transition-new(title-kancha) { animation: none; mix-blend-mode: normal; }
  ::view-transition-group(art-singularity), ::view-transition-group(art-kancha) { overflow: clip; border-radius: var(--radius); }
  ::view-transition-group(title-singularity), ::view-transition-group(title-kancha) { animation-timing-function: var(--ease-spring); animation-duration: 600ms; }
  @keyframes vt-out { to { opacity: 0; } }
  @keyframes vt-in { from { opacity: 0; } }

  .game--singularity .game__art, .page--singularity .ghero__art { view-transition-name: art-singularity; }
  .game--kancha .game__art, .page--kancha .ghero__art { view-transition-name: art-kancha; }
  .game--singularity .game__title, .page--singularity .ghero__title { view-transition-name: title-singularity; }
  .game--kancha .game__title, .page--kancha .ghero__title { view-transition-name: title-kancha; }

  /* hero: headline dissolves as the field collapses (scroll-driven, compositor) */
  @keyframes hero-out {
    to { opacity: 0; translate: 0 -3rem; letter-spacing: 0.02em; }
  }
  @keyframes hero-out-soft { to { opacity: 0; translate: 0 -1.5rem; } }
  @supports (animation-timeline: scroll()) {
    .hero__title { animation: hero-out linear both; animation-timeline: scroll(root); animation-range: 0 40svh; }
    .hero__lede, .hero__actions, .hero__hint { animation: hero-out-soft linear both; animation-timeline: scroll(root); animation-range: 0 30svh; }
  }
  @supports not (animation-timeline: scroll()) {
    /* --p is set by hero.js from scroll progress */
    .hero__title { opacity: calc(1 - var(--p) * 2.6); translate: 0 calc(var(--p) * -6rem); }
    .hero__lede, .hero__actions, .hero__hint { opacity: calc(1 - var(--p) * 3.4); }
  }

  /* reveal on scroll (view timeline) — content is visible by default, animated only where supported */
  @keyframes rise { from { opacity: 0; translate: 0 2.5rem; } }
  @supports (animation-timeline: view()) {
    .reveal { animation: rise var(--ease-out) both; animation-timeline: view(); animation-range: entry 5% entry 45%; }
    .reveal--late { animation-range: entry 15% entry 60%; }
  }
  @keyframes line-in { from { opacity: 0.15; translate: 0 0.6em; } }
  @supports (animation-timeline: view()) {
    .statement__text .line { animation: line-in var(--ease-out) both; animation-timeline: view(); animation-range: entry 0% entry calc(40% + var(--i, 0) * 14%); }
  }

  /* popover open/close */
  .menu { opacity: 0; translate: 0 -0.5rem; transition: opacity var(--dur-fast) ease, translate var(--dur) var(--ease-spring), display var(--dur) allow-discrete, overlay var(--dur) allow-discrete; }
  .menu:popover-open { opacity: 1; translate: 0 0; }
  @starting-style { .menu:popover-open { opacity: 0; translate: 0 -0.5rem; } }

  /* ---------- art: singularity ---------- */
  .art-sg .ring { transform-origin: 300px 200px; animation: spin 28s linear infinite; }
  .art-sg .ring-2 { animation-duration: 44s; animation-direction: reverse; }
  .art-sg .chain circle { transition: transform var(--dur-slow) var(--ease-spring); }
  .game:hover .art-sg .chain circle, .ghero__art:hover .art-sg .chain circle { transform: translate(var(--dx), var(--dy)); }
  .art-sg .core { transform-origin: 300px 200px; transition: transform var(--dur-slow) var(--ease-spring); }
  .game:hover .art-sg .core, .ghero__art:hover .art-sg .core { transform: scale(1.08); }
  .art-sg .star { animation: twinkle 4s ease-in-out infinite; animation-delay: calc(var(--i, 0) * -0.7s); }
  @keyframes spin { to { transform: rotate(360deg); } }
  @keyframes twinkle { 0%, 100% { opacity: 0.25; } 50% { opacity: 0.75; } }

  /* ---------- art: kancha ---------- */
  .art-kc .shooter { transition: transform 0.9s var(--ease-spring); }
  .game:hover .art-kc .shooter, .ghero__art:hover .art-kc .shooter { transform: translate(160px, -78px); }
  .art-kc .scatter { transition: transform 0.9s var(--ease-spring); transition-delay: 0.12s; }
  .game:hover .art-kc .scatter, .ghero__art:hover .art-kc .scatter { transform: translate(var(--dx), var(--dy)); }
  .art-kc .chalk { stroke-dasharray: 1400; stroke-dashoffset: 0; }
  @supports (animation-timeline: view()) {
    .art-kc .chalk { animation: chalk-draw linear both; animation-timeline: view(); animation-range: entry 10% entry 80%; }
  }
  @keyframes chalk-draw { from { stroke-dashoffset: 1400; } }

  /* ---------- reduced motion ---------- */
  @media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
    ::view-transition-group(*), ::view-transition-old(*), ::view-transition-new(*) { animation: none !important; }
    .hero__title, .hero__lede, .hero__actions, .hero__hint { animation: none !important; opacity: calc(1 - var(--p) * 2.1); translate: none; }
    .reveal, .statement__text .line, .art-kc .chalk { animation: none !important; }
    .hero-track { block-size: auto; }
    .hero { position: relative; }
  }
}